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1/*!
2 * Chart.js
3 * http://chartjs.org/
4 * Version: 2.7.2
5 *
6 * Copyright 2018 Chart.js Contributors
7 * Released under the MIT license
8 * https://github.com/chartjs/Chart.js/blob/master/LICENSE.md
9 */
10(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.Chart = f()}})(function(){var define,module,exports;return (function(){function r(e,n,t){function o(i,f){if(!n[i]){if(!e[i]){var c="function"==typeof require&&require;if(!f&&c)return c(i,!0);if(u)return u(i,!0);var a=new Error("Cannot find module '"+i+"'");throw a.code="MODULE_NOT_FOUND",a}var p=n[i]={exports:{}};e[i][0].call(p.exports,function(r){var n=e[i][1][r];return o(n||r)},p,p.exports,r,e,n,t)}return n[i].exports}for(var u="function"==typeof require&&require,i=0;i<t.length;i++)o(t[i]);return o}return r})()({1:[function(require,module,exports){
11
12},{}],2:[function(require,module,exports){
13/* MIT license */
14var colorNames = require(6);
15
16module.exports = {
17   getRgba: getRgba,
18   getHsla: getHsla,
19   getRgb: getRgb,
20   getHsl: getHsl,
21   getHwb: getHwb,
22   getAlpha: getAlpha,
23
24   hexString: hexString,
25   rgbString: rgbString,
26   rgbaString: rgbaString,
27   percentString: percentString,
28   percentaString: percentaString,
29   hslString: hslString,
30   hslaString: hslaString,
31   hwbString: hwbString,
32   keyword: keyword
33}
34
35function getRgba(string) {
36   if (!string) {
37      return;
38   }
39   var abbr =  /^#([a-fA-F0-9]{3})$/i,
40       hex =  /^#([a-fA-F0-9]{6})$/i,
41       rgba = /^rgba?\(\s*([+-]?\d+)\s*,\s*([+-]?\d+)\s*,\s*([+-]?\d+)\s*(?:,\s*([+-]?[\d\.]+)\s*)?\)$/i,
42       per = /^rgba?\(\s*([+-]?[\d\.]+)\%\s*,\s*([+-]?[\d\.]+)\%\s*,\s*([+-]?[\d\.]+)\%\s*(?:,\s*([+-]?[\d\.]+)\s*)?\)$/i,
43       keyword = /(\w+)/;
44
45   var rgb = [0, 0, 0],
46       a = 1,
47       match = string.match(abbr);
48   if (match) {
49      match = match[1];
50      for (var i = 0; i < rgb.length; i++) {
51         rgb[i] = parseInt(match[i] + match[i], 16);
52      }
53   }
54   else if (match = string.match(hex)) {
55      match = match[1];
56      for (var i = 0; i < rgb.length; i++) {
57         rgb[i] = parseInt(match.slice(i * 2, i * 2 + 2), 16);
58      }
59   }
60   else if (match = string.match(rgba)) {
61      for (var i = 0; i < rgb.length; i++) {
62         rgb[i] = parseInt(match[i + 1]);
63      }
64      a = parseFloat(match[4]);
65   }
66   else if (match = string.match(per)) {
67      for (var i = 0; i < rgb.length; i++) {
68         rgb[i] = Math.round(parseFloat(match[i + 1]) * 2.55);
69      }
70      a = parseFloat(match[4]);
71   }
72   else if (match = string.match(keyword)) {
73      if (match[1] == "transparent") {
74         return [0, 0, 0, 0];
75      }
76      rgb = colorNames[match[1]];
77      if (!rgb) {
78         return;
79      }
80   }
81
82   for (var i = 0; i < rgb.length; i++) {
83      rgb[i] = scale(rgb[i], 0, 255);
84   }
85   if (!a && a != 0) {
86      a = 1;
87   }
88   else {
89      a = scale(a, 0, 1);
90   }
91   rgb[3] = a;
92   return rgb;
93}
94
95function getHsla(string) {
96   if (!string) {
97      return;
98   }
99   var hsl = /^hsla?\(\s*([+-]?\d+)(?:deg)?\s*,\s*([+-]?[\d\.]+)%\s*,\s*([+-]?[\d\.]+)%\s*(?:,\s*([+-]?[\d\.]+)\s*)?\)/;
100   var match = string.match(hsl);
101   if (match) {
102      var alpha = parseFloat(match[4]);
103      var h = scale(parseInt(match[1]), 0, 360),
104          s = scale(parseFloat(match[2]), 0, 100),
105          l = scale(parseFloat(match[3]), 0, 100),
106          a = scale(isNaN(alpha) ? 1 : alpha, 0, 1);
107      return [h, s, l, a];
108   }
109}
110
111function getHwb(string) {
112   if (!string) {
113      return;
114   }
115   var hwb = /^hwb\(\s*([+-]?\d+)(?:deg)?\s*,\s*([+-]?[\d\.]+)%\s*,\s*([+-]?[\d\.]+)%\s*(?:,\s*([+-]?[\d\.]+)\s*)?\)/;
116   var match = string.match(hwb);
117   if (match) {
118    var alpha = parseFloat(match[4]);
119      var h = scale(parseInt(match[1]), 0, 360),
120          w = scale(parseFloat(match[2]), 0, 100),
121          b = scale(parseFloat(match[3]), 0, 100),
122          a = scale(isNaN(alpha) ? 1 : alpha, 0, 1);
123      return [h, w, b, a];
124   }
125}
126
127function getRgb(string) {
128   var rgba = getRgba(string);
129   return rgba && rgba.slice(0, 3);
130}
131
132function getHsl(string) {
133  var hsla = getHsla(string);
134  return hsla && hsla.slice(0, 3);
135}
136
137function getAlpha(string) {
138   var vals = getRgba(string);
139   if (vals) {
140      return vals[3];
141   }
142   else if (vals = getHsla(string)) {
143      return vals[3];
144   }
145   else if (vals = getHwb(string)) {
146      return vals[3];
147   }
148}
149
150// generators
151function hexString(rgb) {
152   return "#" + hexDouble(rgb[0]) + hexDouble(rgb[1])
153              + hexDouble(rgb[2]);
154}
155
156function rgbString(rgba, alpha) {
157   if (alpha < 1 || (rgba[3] && rgba[3] < 1)) {
158      return rgbaString(rgba, alpha);
159   }
160   return "rgb(" + rgba[0] + ", " + rgba[1] + ", " + rgba[2] + ")";
161}
162
163function rgbaString(rgba, alpha) {
164   if (alpha === undefined) {
165      alpha = (rgba[3] !== undefined ? rgba[3] : 1);
166   }
167   return "rgba(" + rgba[0] + ", " + rgba[1] + ", " + rgba[2]
168           + ", " + alpha + ")";
169}
170
171function percentString(rgba, alpha) {
172   if (alpha < 1 || (rgba[3] && rgba[3] < 1)) {
173      return percentaString(rgba, alpha);
174   }
175   var r = Math.round(rgba[0]/255 * 100),
176       g = Math.round(rgba[1]/255 * 100),
177       b = Math.round(rgba[2]/255 * 100);
178
179   return "rgb(" + r + "%, " + g + "%, " + b + "%)";
180}
181
182function percentaString(rgba, alpha) {
183   var r = Math.round(rgba[0]/255 * 100),
184       g = Math.round(rgba[1]/255 * 100),
185       b = Math.round(rgba[2]/255 * 100);
186   return "rgba(" + r + "%, " + g + "%, " + b + "%, " + (alpha || rgba[3] || 1) + ")";
187}
188
189function hslString(hsla, alpha) {
190   if (alpha < 1 || (hsla[3] && hsla[3] < 1)) {
191      return hslaString(hsla, alpha);
192   }
193   return "hsl(" + hsla[0] + ", " + hsla[1] + "%, " + hsla[2] + "%)";
194}
195
196function hslaString(hsla, alpha) {
197   if (alpha === undefined) {
198      alpha = (hsla[3] !== undefined ? hsla[3] : 1);
199   }
200   return "hsla(" + hsla[0] + ", " + hsla[1] + "%, " + hsla[2] + "%, "
201           + alpha + ")";
202}
203
204// hwb is a bit different than rgb(a) & hsl(a) since there is no alpha specific syntax
205// (hwb have alpha optional & 1 is default value)
206function hwbString(hwb, alpha) {
207   if (alpha === undefined) {
208      alpha = (hwb[3] !== undefined ? hwb[3] : 1);
209   }
210   return "hwb(" + hwb[0] + ", " + hwb[1] + "%, " + hwb[2] + "%"
211           + (alpha !== undefined && alpha !== 1 ? ", " + alpha : "") + ")";
212}
213
214function keyword(rgb) {
215  return reverseNames[rgb.slice(0, 3)];
216}
217
218// helpers
219function scale(num, min, max) {
220   return Math.min(Math.max(min, num), max);
221}
222
223function hexDouble(num) {
224  var str = num.toString(16).toUpperCase();
225  return (str.length < 2) ? "0" + str : str;
226}
227
228
229//create a list of reverse color names
230var reverseNames = {};
231for (var name in colorNames) {
232   reverseNames[colorNames[name]] = name;
233}
234
235},{"6":6}],3:[function(require,module,exports){
236/* MIT license */
237var convert = require(5);
238var string = require(2);
239
240var Color = function (obj) {
241	if (obj instanceof Color) {
242		return obj;
243	}
244	if (!(this instanceof Color)) {
245		return new Color(obj);
246	}
247
248	this.valid = false;
249	this.values = {
250		rgb: [0, 0, 0],
251		hsl: [0, 0, 0],
252		hsv: [0, 0, 0],
253		hwb: [0, 0, 0],
254		cmyk: [0, 0, 0, 0],
255		alpha: 1
256	};
257
258	// parse Color() argument
259	var vals;
260	if (typeof obj === 'string') {
261		vals = string.getRgba(obj);
262		if (vals) {
263			this.setValues('rgb', vals);
264		} else if (vals = string.getHsla(obj)) {
265			this.setValues('hsl', vals);
266		} else if (vals = string.getHwb(obj)) {
267			this.setValues('hwb', vals);
268		}
269	} else if (typeof obj === 'object') {
270		vals = obj;
271		if (vals.r !== undefined || vals.red !== undefined) {
272			this.setValues('rgb', vals);
273		} else if (vals.l !== undefined || vals.lightness !== undefined) {
274			this.setValues('hsl', vals);
275		} else if (vals.v !== undefined || vals.value !== undefined) {
276			this.setValues('hsv', vals);
277		} else if (vals.w !== undefined || vals.whiteness !== undefined) {
278			this.setValues('hwb', vals);
279		} else if (vals.c !== undefined || vals.cyan !== undefined) {
280			this.setValues('cmyk', vals);
281		}
282	}
283};
284
285Color.prototype = {
286	isValid: function () {
287		return this.valid;
288	},
289	rgb: function () {
290		return this.setSpace('rgb', arguments);
291	},
292	hsl: function () {
293		return this.setSpace('hsl', arguments);
294	},
295	hsv: function () {
296		return this.setSpace('hsv', arguments);
297	},
298	hwb: function () {
299		return this.setSpace('hwb', arguments);
300	},
301	cmyk: function () {
302		return this.setSpace('cmyk', arguments);
303	},
304
305	rgbArray: function () {
306		return this.values.rgb;
307	},
308	hslArray: function () {
309		return this.values.hsl;
310	},
311	hsvArray: function () {
312		return this.values.hsv;
313	},
314	hwbArray: function () {
315		var values = this.values;
316		if (values.alpha !== 1) {
317			return values.hwb.concat([values.alpha]);
318		}
319		return values.hwb;
320	},
321	cmykArray: function () {
322		return this.values.cmyk;
323	},
324	rgbaArray: function () {
325		var values = this.values;
326		return values.rgb.concat([values.alpha]);
327	},
328	hslaArray: function () {
329		var values = this.values;
330		return values.hsl.concat([values.alpha]);
331	},
332	alpha: function (val) {
333		if (val === undefined) {
334			return this.values.alpha;
335		}
336		this.setValues('alpha', val);
337		return this;
338	},
339
340	red: function (val) {
341		return this.setChannel('rgb', 0, val);
342	},
343	green: function (val) {
344		return this.setChannel('rgb', 1, val);
345	},
346	blue: function (val) {
347		return this.setChannel('rgb', 2, val);
348	},
349	hue: function (val) {
350		if (val) {
351			val %= 360;
352			val = val < 0 ? 360 + val : val;
353		}
354		return this.setChannel('hsl', 0, val);
355	},
356	saturation: function (val) {
357		return this.setChannel('hsl', 1, val);
358	},
359	lightness: function (val) {
360		return this.setChannel('hsl', 2, val);
361	},
362	saturationv: function (val) {
363		return this.setChannel('hsv', 1, val);
364	},
365	whiteness: function (val) {
366		return this.setChannel('hwb', 1, val);
367	},
368	blackness: function (val) {
369		return this.setChannel('hwb', 2, val);
370	},
371	value: function (val) {
372		return this.setChannel('hsv', 2, val);
373	},
374	cyan: function (val) {
375		return this.setChannel('cmyk', 0, val);
376	},
377	magenta: function (val) {
378		return this.setChannel('cmyk', 1, val);
379	},
380	yellow: function (val) {
381		return this.setChannel('cmyk', 2, val);
382	},
383	black: function (val) {
384		return this.setChannel('cmyk', 3, val);
385	},
386
387	hexString: function () {
388		return string.hexString(this.values.rgb);
389	},
390	rgbString: function () {
391		return string.rgbString(this.values.rgb, this.values.alpha);
392	},
393	rgbaString: function () {
394		return string.rgbaString(this.values.rgb, this.values.alpha);
395	},
396	percentString: function () {
397		return string.percentString(this.values.rgb, this.values.alpha);
398	},
399	hslString: function () {
400		return string.hslString(this.values.hsl, this.values.alpha);
401	},
402	hslaString: function () {
403		return string.hslaString(this.values.hsl, this.values.alpha);
404	},
405	hwbString: function () {
406		return string.hwbString(this.values.hwb, this.values.alpha);
407	},
408	keyword: function () {
409		return string.keyword(this.values.rgb, this.values.alpha);
410	},
411
412	rgbNumber: function () {
413		var rgb = this.values.rgb;
414		return (rgb[0] << 16) | (rgb[1] << 8) | rgb[2];
415	},
416
417	luminosity: function () {
418		// http://www.w3.org/TR/WCAG20/#relativeluminancedef
419		var rgb = this.values.rgb;
420		var lum = [];
421		for (var i = 0; i < rgb.length; i++) {
422			var chan = rgb[i] / 255;
423			lum[i] = (chan <= 0.03928) ? chan / 12.92 : Math.pow(((chan + 0.055) / 1.055), 2.4);
424		}
425		return 0.2126 * lum[0] + 0.7152 * lum[1] + 0.0722 * lum[2];
426	},
427
428	contrast: function (color2) {
429		// http://www.w3.org/TR/WCAG20/#contrast-ratiodef
430		var lum1 = this.luminosity();
431		var lum2 = color2.luminosity();
432		if (lum1 > lum2) {
433			return (lum1 + 0.05) / (lum2 + 0.05);
434		}
435		return (lum2 + 0.05) / (lum1 + 0.05);
436	},
437
438	level: function (color2) {
439		var contrastRatio = this.contrast(color2);
440		if (contrastRatio >= 7.1) {
441			return 'AAA';
442		}
443
444		return (contrastRatio >= 4.5) ? 'AA' : '';
445	},
446
447	dark: function () {
448		// YIQ equation from http://24ways.org/2010/calculating-color-contrast
449		var rgb = this.values.rgb;
450		var yiq = (rgb[0] * 299 + rgb[1] * 587 + rgb[2] * 114) / 1000;
451		return yiq < 128;
452	},
453
454	light: function () {
455		return !this.dark();
456	},
457
458	negate: function () {
459		var rgb = [];
460		for (var i = 0; i < 3; i++) {
461			rgb[i] = 255 - this.values.rgb[i];
462		}
463		this.setValues('rgb', rgb);
464		return this;
465	},
466
467	lighten: function (ratio) {
468		var hsl = this.values.hsl;
469		hsl[2] += hsl[2] * ratio;
470		this.setValues('hsl', hsl);
471		return this;
472	},
473
474	darken: function (ratio) {
475		var hsl = this.values.hsl;
476		hsl[2] -= hsl[2] * ratio;
477		this.setValues('hsl', hsl);
478		return this;
479	},
480
481	saturate: function (ratio) {
482		var hsl = this.values.hsl;
483		hsl[1] += hsl[1] * ratio;
484		this.setValues('hsl', hsl);
485		return this;
486	},
487
488	desaturate: function (ratio) {
489		var hsl = this.values.hsl;
490		hsl[1] -= hsl[1] * ratio;
491		this.setValues('hsl', hsl);
492		return this;
493	},
494
495	whiten: function (ratio) {
496		var hwb = this.values.hwb;
497		hwb[1] += hwb[1] * ratio;
498		this.setValues('hwb', hwb);
499		return this;
500	},
501
502	blacken: function (ratio) {
503		var hwb = this.values.hwb;
504		hwb[2] += hwb[2] * ratio;
505		this.setValues('hwb', hwb);
506		return this;
507	},
508
509	greyscale: function () {
510		var rgb = this.values.rgb;
511		// http://en.wikipedia.org/wiki/Grayscale#Converting_color_to_grayscale
512		var val = rgb[0] * 0.3 + rgb[1] * 0.59 + rgb[2] * 0.11;
513		this.setValues('rgb', [val, val, val]);
514		return this;
515	},
516
517	clearer: function (ratio) {
518		var alpha = this.values.alpha;
519		this.setValues('alpha', alpha - (alpha * ratio));
520		return this;
521	},
522
523	opaquer: function (ratio) {
524		var alpha = this.values.alpha;
525		this.setValues('alpha', alpha + (alpha * ratio));
526		return this;
527	},
528
529	rotate: function (degrees) {
530		var hsl = this.values.hsl;
531		var hue = (hsl[0] + degrees) % 360;
532		hsl[0] = hue < 0 ? 360 + hue : hue;
533		this.setValues('hsl', hsl);
534		return this;
535	},
536
537	/**
538	 * Ported from sass implementation in C
539	 * https://github.com/sass/libsass/blob/0e6b4a2850092356aa3ece07c6b249f0221caced/functions.cpp#L209
540	 */
541	mix: function (mixinColor, weight) {
542		var color1 = this;
543		var color2 = mixinColor;
544		var p = weight === undefined ? 0.5 : weight;
545
546		var w = 2 * p - 1;
547		var a = color1.alpha() - color2.alpha();
548
549		var w1 = (((w * a === -1) ? w : (w + a) / (1 + w * a)) + 1) / 2.0;
550		var w2 = 1 - w1;
551
552		return this
553			.rgb(
554				w1 * color1.red() + w2 * color2.red(),
555				w1 * color1.green() + w2 * color2.green(),
556				w1 * color1.blue() + w2 * color2.blue()
557			)
558			.alpha(color1.alpha() * p + color2.alpha() * (1 - p));
559	},
560
561	toJSON: function () {
562		return this.rgb();
563	},
564
565	clone: function () {
566		// NOTE(SB): using node-clone creates a dependency to Buffer when using browserify,
567		// making the final build way to big to embed in Chart.js. So let's do it manually,
568		// assuming that values to clone are 1 dimension arrays containing only numbers,
569		// except 'alpha' which is a number.
570		var result = new Color();
571		var source = this.values;
572		var target = result.values;
573		var value, type;
574
575		for (var prop in source) {
576			if (source.hasOwnProperty(prop)) {
577				value = source[prop];
578				type = ({}).toString.call(value);
579				if (type === '[object Array]') {
580					target[prop] = value.slice(0);
581				} else if (type === '[object Number]') {
582					target[prop] = value;
583				} else {
584					console.error('unexpected color value:', value);
585				}
586			}
587		}
588
589		return result;
590	}
591};
592
593Color.prototype.spaces = {
594	rgb: ['red', 'green', 'blue'],
595	hsl: ['hue', 'saturation', 'lightness'],
596	hsv: ['hue', 'saturation', 'value'],
597	hwb: ['hue', 'whiteness', 'blackness'],
598	cmyk: ['cyan', 'magenta', 'yellow', 'black']
599};
600
601Color.prototype.maxes = {
602	rgb: [255, 255, 255],
603	hsl: [360, 100, 100],
604	hsv: [360, 100, 100],
605	hwb: [360, 100, 100],
606	cmyk: [100, 100, 100, 100]
607};
608
609Color.prototype.getValues = function (space) {
610	var values = this.values;
611	var vals = {};
612
613	for (var i = 0; i < space.length; i++) {
614		vals[space.charAt(i)] = values[space][i];
615	}
616
617	if (values.alpha !== 1) {
618		vals.a = values.alpha;
619	}
620
621	// {r: 255, g: 255, b: 255, a: 0.4}
622	return vals;
623};
624
625Color.prototype.setValues = function (space, vals) {
626	var values = this.values;
627	var spaces = this.spaces;
628	var maxes = this.maxes;
629	var alpha = 1;
630	var i;
631
632	this.valid = true;
633
634	if (space === 'alpha') {
635		alpha = vals;
636	} else if (vals.length) {
637		// [10, 10, 10]
638		values[space] = vals.slice(0, space.length);
639		alpha = vals[space.length];
640	} else if (vals[space.charAt(0)] !== undefined) {
641		// {r: 10, g: 10, b: 10}
642		for (i = 0; i < space.length; i++) {
643			values[space][i] = vals[space.charAt(i)];
644		}
645
646		alpha = vals.a;
647	} else if (vals[spaces[space][0]] !== undefined) {
648		// {red: 10, green: 10, blue: 10}
649		var chans = spaces[space];
650
651		for (i = 0; i < space.length; i++) {
652			values[space][i] = vals[chans[i]];
653		}
654
655		alpha = vals.alpha;
656	}
657
658	values.alpha = Math.max(0, Math.min(1, (alpha === undefined ? values.alpha : alpha)));
659
660	if (space === 'alpha') {
661		return false;
662	}
663
664	var capped;
665
666	// cap values of the space prior converting all values
667	for (i = 0; i < space.length; i++) {
668		capped = Math.max(0, Math.min(maxes[space][i], values[space][i]));
669		values[space][i] = Math.round(capped);
670	}
671
672	// convert to all the other color spaces
673	for (var sname in spaces) {
674		if (sname !== space) {
675			values[sname] = convert[space][sname](values[space]);
676		}
677	}
678
679	return true;
680};
681
682Color.prototype.setSpace = function (space, args) {
683	var vals = args[0];
684
685	if (vals === undefined) {
686		// color.rgb()
687		return this.getValues(space);
688	}
689
690	// color.rgb(10, 10, 10)
691	if (typeof vals === 'number') {
692		vals = Array.prototype.slice.call(args);
693	}
694
695	this.setValues(space, vals);
696	return this;
697};
698
699Color.prototype.setChannel = function (space, index, val) {
700	var svalues = this.values[space];
701	if (val === undefined) {
702		// color.red()
703		return svalues[index];
704	} else if (val === svalues[index]) {
705		// color.red(color.red())
706		return this;
707	}
708
709	// color.red(100)
710	svalues[index] = val;
711	this.setValues(space, svalues);
712
713	return this;
714};
715
716if (typeof window !== 'undefined') {
717	window.Color = Color;
718}
719
720module.exports = Color;
721
722},{"2":2,"5":5}],4:[function(require,module,exports){
723/* MIT license */
724
725module.exports = {
726  rgb2hsl: rgb2hsl,
727  rgb2hsv: rgb2hsv,
728  rgb2hwb: rgb2hwb,
729  rgb2cmyk: rgb2cmyk,
730  rgb2keyword: rgb2keyword,
731  rgb2xyz: rgb2xyz,
732  rgb2lab: rgb2lab,
733  rgb2lch: rgb2lch,
734
735  hsl2rgb: hsl2rgb,
736  hsl2hsv: hsl2hsv,
737  hsl2hwb: hsl2hwb,
738  hsl2cmyk: hsl2cmyk,
739  hsl2keyword: hsl2keyword,
740
741  hsv2rgb: hsv2rgb,
742  hsv2hsl: hsv2hsl,
743  hsv2hwb: hsv2hwb,
744  hsv2cmyk: hsv2cmyk,
745  hsv2keyword: hsv2keyword,
746
747  hwb2rgb: hwb2rgb,
748  hwb2hsl: hwb2hsl,
749  hwb2hsv: hwb2hsv,
750  hwb2cmyk: hwb2cmyk,
751  hwb2keyword: hwb2keyword,
752
753  cmyk2rgb: cmyk2rgb,
754  cmyk2hsl: cmyk2hsl,
755  cmyk2hsv: cmyk2hsv,
756  cmyk2hwb: cmyk2hwb,
757  cmyk2keyword: cmyk2keyword,
758
759  keyword2rgb: keyword2rgb,
760  keyword2hsl: keyword2hsl,
761  keyword2hsv: keyword2hsv,
762  keyword2hwb: keyword2hwb,
763  keyword2cmyk: keyword2cmyk,
764  keyword2lab: keyword2lab,
765  keyword2xyz: keyword2xyz,
766
767  xyz2rgb: xyz2rgb,
768  xyz2lab: xyz2lab,
769  xyz2lch: xyz2lch,
770
771  lab2xyz: lab2xyz,
772  lab2rgb: lab2rgb,
773  lab2lch: lab2lch,
774
775  lch2lab: lch2lab,
776  lch2xyz: lch2xyz,
777  lch2rgb: lch2rgb
778}
779
780
781function rgb2hsl(rgb) {
782  var r = rgb[0]/255,
783      g = rgb[1]/255,
784      b = rgb[2]/255,
785      min = Math.min(r, g, b),
786      max = Math.max(r, g, b),
787      delta = max - min,
788      h, s, l;
789
790  if (max == min)
791    h = 0;
792  else if (r == max)
793    h = (g - b) / delta;
794  else if (g == max)
795    h = 2 + (b - r) / delta;
796  else if (b == max)
797    h = 4 + (r - g)/ delta;
798
799  h = Math.min(h * 60, 360);
800
801  if (h < 0)
802    h += 360;
803
804  l = (min + max) / 2;
805
806  if (max == min)
807    s = 0;
808  else if (l <= 0.5)
809    s = delta / (max + min);
810  else
811    s = delta / (2 - max - min);
812
813  return [h, s * 100, l * 100];
814}
815
816function rgb2hsv(rgb) {
817  var r = rgb[0],
818      g = rgb[1],
819      b = rgb[2],
820      min = Math.min(r, g, b),
821      max = Math.max(r, g, b),
822      delta = max - min,
823      h, s, v;
824
825  if (max == 0)
826    s = 0;
827  else
828    s = (delta/max * 1000)/10;
829
830  if (max == min)
831    h = 0;
832  else if (r == max)
833    h = (g - b) / delta;
834  else if (g == max)
835    h = 2 + (b - r) / delta;
836  else if (b == max)
837    h = 4 + (r - g) / delta;
838
839  h = Math.min(h * 60, 360);
840
841  if (h < 0)
842    h += 360;
843
844  v = ((max / 255) * 1000) / 10;
845
846  return [h, s, v];
847}
848
849function rgb2hwb(rgb) {
850  var r = rgb[0],
851      g = rgb[1],
852      b = rgb[2],
853      h = rgb2hsl(rgb)[0],
854      w = 1/255 * Math.min(r, Math.min(g, b)),
855      b = 1 - 1/255 * Math.max(r, Math.max(g, b));
856
857  return [h, w * 100, b * 100];
858}
859
860function rgb2cmyk(rgb) {
861  var r = rgb[0] / 255,
862      g = rgb[1] / 255,
863      b = rgb[2] / 255,
864      c, m, y, k;
865
866  k = Math.min(1 - r, 1 - g, 1 - b);
867  c = (1 - r - k) / (1 - k) || 0;
868  m = (1 - g - k) / (1 - k) || 0;
869  y = (1 - b - k) / (1 - k) || 0;
870  return [c * 100, m * 100, y * 100, k * 100];
871}
872
873function rgb2keyword(rgb) {
874  return reverseKeywords[JSON.stringify(rgb)];
875}
876
877function rgb2xyz(rgb) {
878  var r = rgb[0] / 255,
879      g = rgb[1] / 255,
880      b = rgb[2] / 255;
881
882  // assume sRGB
883  r = r > 0.04045 ? Math.pow(((r + 0.055) / 1.055), 2.4) : (r / 12.92);
884  g = g > 0.04045 ? Math.pow(((g + 0.055) / 1.055), 2.4) : (g / 12.92);
885  b = b > 0.04045 ? Math.pow(((b + 0.055) / 1.055), 2.4) : (b / 12.92);
886
887  var x = (r * 0.4124) + (g * 0.3576) + (b * 0.1805);
888  var y = (r * 0.2126) + (g * 0.7152) + (b * 0.0722);
889  var z = (r * 0.0193) + (g * 0.1192) + (b * 0.9505);
890
891  return [x * 100, y *100, z * 100];
892}
893
894function rgb2lab(rgb) {
895  var xyz = rgb2xyz(rgb),
896        x = xyz[0],
897        y = xyz[1],
898        z = xyz[2],
899        l, a, b;
900
901  x /= 95.047;
902  y /= 100;
903  z /= 108.883;
904
905  x = x > 0.008856 ? Math.pow(x, 1/3) : (7.787 * x) + (16 / 116);
906  y = y > 0.008856 ? Math.pow(y, 1/3) : (7.787 * y) + (16 / 116);
907  z = z > 0.008856 ? Math.pow(z, 1/3) : (7.787 * z) + (16 / 116);
908
909  l = (116 * y) - 16;
910  a = 500 * (x - y);
911  b = 200 * (y - z);
912
913  return [l, a, b];
914}
915
916function rgb2lch(args) {
917  return lab2lch(rgb2lab(args));
918}
919
920function hsl2rgb(hsl) {
921  var h = hsl[0] / 360,
922      s = hsl[1] / 100,
923      l = hsl[2] / 100,
924      t1, t2, t3, rgb, val;
925
926  if (s == 0) {
927    val = l * 255;
928    return [val, val, val];
929  }
930
931  if (l < 0.5)
932    t2 = l * (1 + s);
933  else
934    t2 = l + s - l * s;
935  t1 = 2 * l - t2;
936
937  rgb = [0, 0, 0];
938  for (var i = 0; i < 3; i++) {
939    t3 = h + 1 / 3 * - (i - 1);
940    t3 < 0 && t3++;
941    t3 > 1 && t3--;
942
943    if (6 * t3 < 1)
944      val = t1 + (t2 - t1) * 6 * t3;
945    else if (2 * t3 < 1)
946      val = t2;
947    else if (3 * t3 < 2)
948      val = t1 + (t2 - t1) * (2 / 3 - t3) * 6;
949    else
950      val = t1;
951
952    rgb[i] = val * 255;
953  }
954
955  return rgb;
956}
957
958function hsl2hsv(hsl) {
959  var h = hsl[0],
960      s = hsl[1] / 100,
961      l = hsl[2] / 100,
962      sv, v;
963
964  if(l === 0) {
965      // no need to do calc on black
966      // also avoids divide by 0 error
967      return [0, 0, 0];
968  }
969
970  l *= 2;
971  s *= (l <= 1) ? l : 2 - l;
972  v = (l + s) / 2;
973  sv = (2 * s) / (l + s);
974  return [h, sv * 100, v * 100];
975}
976
977function hsl2hwb(args) {
978  return rgb2hwb(hsl2rgb(args));
979}
980
981function hsl2cmyk(args) {
982  return rgb2cmyk(hsl2rgb(args));
983}
984
985function hsl2keyword(args) {
986  return rgb2keyword(hsl2rgb(args));
987}
988
989
990function hsv2rgb(hsv) {
991  var h = hsv[0] / 60,
992      s = hsv[1] / 100,
993      v = hsv[2] / 100,
994      hi = Math.floor(h) % 6;
995
996  var f = h - Math.floor(h),
997      p = 255 * v * (1 - s),
998      q = 255 * v * (1 - (s * f)),
999      t = 255 * v * (1 - (s * (1 - f))),
1000      v = 255 * v;
1001
1002  switch(hi) {
1003    case 0:
1004      return [v, t, p];
1005    case 1:
1006      return [q, v, p];
1007    case 2:
1008      return [p, v, t];
1009    case 3:
1010      return [p, q, v];
1011    case 4:
1012      return [t, p, v];
1013    case 5:
1014      return [v, p, q];
1015  }
1016}
1017
1018function hsv2hsl(hsv) {
1019  var h = hsv[0],
1020      s = hsv[1] / 100,
1021      v = hsv[2] / 100,
1022      sl, l;
1023
1024  l = (2 - s) * v;
1025  sl = s * v;
1026  sl /= (l <= 1) ? l : 2 - l;
1027  sl = sl || 0;
1028  l /= 2;
1029  return [h, sl * 100, l * 100];
1030}
1031
1032function hsv2hwb(args) {
1033  return rgb2hwb(hsv2rgb(args))
1034}
1035
1036function hsv2cmyk(args) {
1037  return rgb2cmyk(hsv2rgb(args));
1038}
1039
1040function hsv2keyword(args) {
1041  return rgb2keyword(hsv2rgb(args));
1042}
1043
1044// http://dev.w3.org/csswg/css-color/#hwb-to-rgb
1045function hwb2rgb(hwb) {
1046  var h = hwb[0] / 360,
1047      wh = hwb[1] / 100,
1048      bl = hwb[2] / 100,
1049      ratio = wh + bl,
1050      i, v, f, n;
1051
1052  // wh + bl cant be > 1
1053  if (ratio > 1) {
1054    wh /= ratio;
1055    bl /= ratio;
1056  }
1057
1058  i = Math.floor(6 * h);
1059  v = 1 - bl;
1060  f = 6 * h - i;
1061  if ((i & 0x01) != 0) {
1062    f = 1 - f;
1063  }
1064  n = wh + f * (v - wh);  // linear interpolation
1065
1066  switch (i) {
1067    default:
1068    case 6:
1069    case 0: r = v; g = n; b = wh; break;
1070    case 1: r = n; g = v; b = wh; break;
1071    case 2: r = wh; g = v; b = n; break;
1072    case 3: r = wh; g = n; b = v; break;
1073    case 4: r = n; g = wh; b = v; break;
1074    case 5: r = v; g = wh; b = n; break;
1075  }
1076
1077  return [r * 255, g * 255, b * 255];
1078}
1079
1080function hwb2hsl(args) {
1081  return rgb2hsl(hwb2rgb(args));
1082}
1083
1084function hwb2hsv(args) {
1085  return rgb2hsv(hwb2rgb(args));
1086}
1087
1088function hwb2cmyk(args) {
1089  return rgb2cmyk(hwb2rgb(args));
1090}
1091
1092function hwb2keyword(args) {
1093  return rgb2keyword(hwb2rgb(args));
1094}
1095
1096function cmyk2rgb(cmyk) {
1097  var c = cmyk[0] / 100,
1098      m = cmyk[1] / 100,
1099      y = cmyk[2] / 100,
1100      k = cmyk[3] / 100,
1101      r, g, b;
1102
1103  r = 1 - Math.min(1, c * (1 - k) + k);
1104  g = 1 - Math.min(1, m * (1 - k) + k);
1105  b = 1 - Math.min(1, y * (1 - k) + k);
1106  return [r * 255, g * 255, b * 255];
1107}
1108
1109function cmyk2hsl(args) {
1110  return rgb2hsl(cmyk2rgb(args));
1111}
1112
1113function cmyk2hsv(args) {
1114  return rgb2hsv(cmyk2rgb(args));
1115}
1116
1117function cmyk2hwb(args) {
1118  return rgb2hwb(cmyk2rgb(args));
1119}
1120
1121function cmyk2keyword(args) {
1122  return rgb2keyword(cmyk2rgb(args));
1123}
1124
1125
1126function xyz2rgb(xyz) {
1127  var x = xyz[0] / 100,
1128      y = xyz[1] / 100,
1129      z = xyz[2] / 100,
1130      r, g, b;
1131
1132  r = (x * 3.2406) + (y * -1.5372) + (z * -0.4986);
1133  g = (x * -0.9689) + (y * 1.8758) + (z * 0.0415);
1134  b = (x * 0.0557) + (y * -0.2040) + (z * 1.0570);
1135
1136  // assume sRGB
1137  r = r > 0.0031308 ? ((1.055 * Math.pow(r, 1.0 / 2.4)) - 0.055)
1138    : r = (r * 12.92);
1139
1140  g = g > 0.0031308 ? ((1.055 * Math.pow(g, 1.0 / 2.4)) - 0.055)
1141    : g = (g * 12.92);
1142
1143  b = b > 0.0031308 ? ((1.055 * Math.pow(b, 1.0 / 2.4)) - 0.055)
1144    : b = (b * 12.92);
1145
1146  r = Math.min(Math.max(0, r), 1);
1147  g = Math.min(Math.max(0, g), 1);
1148  b = Math.min(Math.max(0, b), 1);
1149
1150  return [r * 255, g * 255, b * 255];
1151}
1152
1153function xyz2lab(xyz) {
1154  var x = xyz[0],
1155      y = xyz[1],
1156      z = xyz[2],
1157      l, a, b;
1158
1159  x /= 95.047;
1160  y /= 100;
1161  z /= 108.883;
1162
1163  x = x > 0.008856 ? Math.pow(x, 1/3) : (7.787 * x) + (16 / 116);
1164  y = y > 0.008856 ? Math.pow(y, 1/3) : (7.787 * y) + (16 / 116);
1165  z = z > 0.008856 ? Math.pow(z, 1/3) : (7.787 * z) + (16 / 116);
1166
1167  l = (116 * y) - 16;
1168  a = 500 * (x - y);
1169  b = 200 * (y - z);
1170
1171  return [l, a, b];
1172}
1173
1174function xyz2lch(args) {
1175  return lab2lch(xyz2lab(args));
1176}
1177
1178function lab2xyz(lab) {
1179  var l = lab[0],
1180      a = lab[1],
1181      b = lab[2],
1182      x, y, z, y2;
1183
1184  if (l <= 8) {
1185    y = (l * 100) / 903.3;
1186    y2 = (7.787 * (y / 100)) + (16 / 116);
1187  } else {
1188    y = 100 * Math.pow((l + 16) / 116, 3);
1189    y2 = Math.pow(y / 100, 1/3);
1190  }
1191
1192  x = x / 95.047 <= 0.008856 ? x = (95.047 * ((a / 500) + y2 - (16 / 116))) / 7.787 : 95.047 * Math.pow((a / 500) + y2, 3);
1193
1194  z = z / 108.883 <= 0.008859 ? z = (108.883 * (y2 - (b / 200) - (16 / 116))) / 7.787 : 108.883 * Math.pow(y2 - (b / 200), 3);
1195
1196  return [x, y, z];
1197}
1198
1199function lab2lch(lab) {
1200  var l = lab[0],
1201      a = lab[1],
1202      b = lab[2],
1203      hr, h, c;
1204
1205  hr = Math.atan2(b, a);
1206  h = hr * 360 / 2 / Math.PI;
1207  if (h < 0) {
1208    h += 360;
1209  }
1210  c = Math.sqrt(a * a + b * b);
1211  return [l, c, h];
1212}
1213
1214function lab2rgb(args) {
1215  return xyz2rgb(lab2xyz(args));
1216}
1217
1218function lch2lab(lch) {
1219  var l = lch[0],
1220      c = lch[1],
1221      h = lch[2],
1222      a, b, hr;
1223
1224  hr = h / 360 * 2 * Math.PI;
1225  a = c * Math.cos(hr);
1226  b = c * Math.sin(hr);
1227  return [l, a, b];
1228}
1229
1230function lch2xyz(args) {
1231  return lab2xyz(lch2lab(args));
1232}
1233
1234function lch2rgb(args) {
1235  return lab2rgb(lch2lab(args));
1236}
1237
1238function keyword2rgb(keyword) {
1239  return cssKeywords[keyword];
1240}
1241
1242function keyword2hsl(args) {
1243  return rgb2hsl(keyword2rgb(args));
1244}
1245
1246function keyword2hsv(args) {
1247  return rgb2hsv(keyword2rgb(args));
1248}
1249
1250function keyword2hwb(args) {
1251  return rgb2hwb(keyword2rgb(args));
1252}
1253
1254function keyword2cmyk(args) {
1255  return rgb2cmyk(keyword2rgb(args));
1256}
1257
1258function keyword2lab(args) {
1259  return rgb2lab(keyword2rgb(args));
1260}
1261
1262function keyword2xyz(args) {
1263  return rgb2xyz(keyword2rgb(args));
1264}
1265
1266var cssKeywords = {
1267  aliceblue:  [240,248,255],
1268  antiquewhite: [250,235,215],
1269  aqua: [0,255,255],
1270  aquamarine: [127,255,212],
1271  azure:  [240,255,255],
1272  beige:  [245,245,220],
1273  bisque: [255,228,196],
1274  black:  [0,0,0],
1275  blanchedalmond: [255,235,205],
1276  blue: [0,0,255],
1277  blueviolet: [138,43,226],
1278  brown:  [165,42,42],
1279  burlywood:  [222,184,135],
1280  cadetblue:  [95,158,160],
1281  chartreuse: [127,255,0],
1282  chocolate:  [210,105,30],
1283  coral:  [255,127,80],
1284  cornflowerblue: [100,149,237],
1285  cornsilk: [255,248,220],
1286  crimson:  [220,20,60],
1287  cyan: [0,255,255],
1288  darkblue: [0,0,139],
1289  darkcyan: [0,139,139],
1290  darkgoldenrod:  [184,134,11],
1291  darkgray: [169,169,169],
1292  darkgreen:  [0,100,0],
1293  darkgrey: [169,169,169],
1294  darkkhaki:  [189,183,107],
1295  darkmagenta:  [139,0,139],
1296  darkolivegreen: [85,107,47],
1297  darkorange: [255,140,0],
1298  darkorchid: [153,50,204],
1299  darkred:  [139,0,0],
1300  darksalmon: [233,150,122],
1301  darkseagreen: [143,188,143],
1302  darkslateblue:  [72,61,139],
1303  darkslategray:  [47,79,79],
1304  darkslategrey:  [47,79,79],
1305  darkturquoise:  [0,206,209],
1306  darkviolet: [148,0,211],
1307  deeppink: [255,20,147],
1308  deepskyblue:  [0,191,255],
1309  dimgray:  [105,105,105],
1310  dimgrey:  [105,105,105],
1311  dodgerblue: [30,144,255],
1312  firebrick:  [178,34,34],
1313  floralwhite:  [255,250,240],
1314  forestgreen:  [34,139,34],
1315  fuchsia:  [255,0,255],
1316  gainsboro:  [220,220,220],
1317  ghostwhite: [248,248,255],
1318  gold: [255,215,0],
1319  goldenrod:  [218,165,32],
1320  gray: [128,128,128],
1321  green:  [0,128,0],
1322  greenyellow:  [173,255,47],
1323  grey: [128,128,128],
1324  honeydew: [240,255,240],
1325  hotpink:  [255,105,180],
1326  indianred:  [205,92,92],
1327  indigo: [75,0,130],
1328  ivory:  [255,255,240],
1329  khaki:  [240,230,140],
1330  lavender: [230,230,250],
1331  lavenderblush:  [255,240,245],
1332  lawngreen:  [124,252,0],
1333  lemonchiffon: [255,250,205],
1334  lightblue:  [173,216,230],
1335  lightcoral: [240,128,128],
1336  lightcyan:  [224,255,255],
1337  lightgoldenrodyellow: [250,250,210],
1338  lightgray:  [211,211,211],
1339  lightgreen: [144,238,144],
1340  lightgrey:  [211,211,211],
1341  lightpink:  [255,182,193],
1342  lightsalmon:  [255,160,122],
1343  lightseagreen:  [32,178,170],
1344  lightskyblue: [135,206,250],
1345  lightslategray: [119,136,153],
1346  lightslategrey: [119,136,153],
1347  lightsteelblue: [176,196,222],
1348  lightyellow:  [255,255,224],
1349  lime: [0,255,0],
1350  limegreen:  [50,205,50],
1351  linen:  [250,240,230],
1352  magenta:  [255,0,255],
1353  maroon: [128,0,0],
1354  mediumaquamarine: [102,205,170],
1355  mediumblue: [0,0,205],
1356  mediumorchid: [186,85,211],
1357  mediumpurple: [147,112,219],
1358  mediumseagreen: [60,179,113],
1359  mediumslateblue:  [123,104,238],
1360  mediumspringgreen:  [0,250,154],
1361  mediumturquoise:  [72,209,204],
1362  mediumvioletred:  [199,21,133],
1363  midnightblue: [25,25,112],
1364  mintcream:  [245,255,250],
1365  mistyrose:  [255,228,225],
1366  moccasin: [255,228,181],
1367  navajowhite:  [255,222,173],
1368  navy: [0,0,128],
1369  oldlace:  [253,245,230],
1370  olive:  [128,128,0],
1371  olivedrab:  [107,142,35],
1372  orange: [255,165,0],
1373  orangered:  [255,69,0],
1374  orchid: [218,112,214],
1375  palegoldenrod:  [238,232,170],
1376  palegreen:  [152,251,152],
1377  paleturquoise:  [175,238,238],
1378  palevioletred:  [219,112,147],
1379  papayawhip: [255,239,213],
1380  peachpuff:  [255,218,185],
1381  peru: [205,133,63],
1382  pink: [255,192,203],
1383  plum: [221,160,221],
1384  powderblue: [176,224,230],
1385  purple: [128,0,128],
1386  rebeccapurple: [102, 51, 153],
1387  red:  [255,0,0],
1388  rosybrown:  [188,143,143],
1389  royalblue:  [65,105,225],
1390  saddlebrown:  [139,69,19],
1391  salmon: [250,128,114],
1392  sandybrown: [244,164,96],
1393  seagreen: [46,139,87],
1394  seashell: [255,245,238],
1395  sienna: [160,82,45],
1396  silver: [192,192,192],
1397  skyblue:  [135,206,235],
1398  slateblue:  [106,90,205],
1399  slategray:  [112,128,144],
1400  slategrey:  [112,128,144],
1401  snow: [255,250,250],
1402  springgreen:  [0,255,127],
1403  steelblue:  [70,130,180],
1404  tan:  [210,180,140],
1405  teal: [0,128,128],
1406  thistle:  [216,191,216],
1407  tomato: [255,99,71],
1408  turquoise:  [64,224,208],
1409  violet: [238,130,238],
1410  wheat:  [245,222,179],
1411  white:  [255,255,255],
1412  whitesmoke: [245,245,245],
1413  yellow: [255,255,0],
1414  yellowgreen:  [154,205,50]
1415};
1416
1417var reverseKeywords = {};
1418for (var key in cssKeywords) {
1419  reverseKeywords[JSON.stringify(cssKeywords[key])] = key;
1420}
1421
1422},{}],5:[function(require,module,exports){
1423var conversions = require(4);
1424
1425var convert = function() {
1426   return new Converter();
1427}
1428
1429for (var func in conversions) {
1430  // export Raw versions
1431  convert[func + "Raw"] =  (function(func) {
1432    // accept array or plain args
1433    return function(arg) {
1434      if (typeof arg == "number")
1435        arg = Array.prototype.slice.call(arguments);
1436      return conversions[func](arg);
1437    }
1438  })(func);
1439
1440  var pair = /(\w+)2(\w+)/.exec(func),
1441      from = pair[1],
1442      to = pair[2];
1443
1444  // export rgb2hsl and ["rgb"]["hsl"]
1445  convert[from] = convert[from] || {};
1446
1447  convert[from][to] = convert[func] = (function(func) { 
1448    return function(arg) {
1449      if (typeof arg == "number")
1450        arg = Array.prototype.slice.call(arguments);
1451      
1452      var val = conversions[func](arg);
1453      if (typeof val == "string" || val === undefined)
1454        return val; // keyword
1455
1456      for (var i = 0; i < val.length; i++)
1457        val[i] = Math.round(val[i]);
1458      return val;
1459    }
1460  })(func);
1461}
1462
1463
1464/* Converter does lazy conversion and caching */
1465var Converter = function() {
1466   this.convs = {};
1467};
1468
1469/* Either get the values for a space or
1470  set the values for a space, depending on args */
1471Converter.prototype.routeSpace = function(space, args) {
1472   var values = args[0];
1473   if (values === undefined) {
1474      // color.rgb()
1475      return this.getValues(space);
1476   }
1477   // color.rgb(10, 10, 10)
1478   if (typeof values == "number") {
1479      values = Array.prototype.slice.call(args);        
1480   }
1481
1482   return this.setValues(space, values);
1483};
1484  
1485/* Set the values for a space, invalidating cache */
1486Converter.prototype.setValues = function(space, values) {
1487   this.space = space;
1488   this.convs = {};
1489   this.convs[space] = values;
1490   return this;
1491};
1492
1493/* Get the values for a space. If there's already
1494  a conversion for the space, fetch it, otherwise
1495  compute it */
1496Converter.prototype.getValues = function(space) {
1497   var vals = this.convs[space];
1498   if (!vals) {
1499      var fspace = this.space,
1500          from = this.convs[fspace];
1501      vals = convert[fspace][space](from);
1502
1503      this.convs[space] = vals;
1504   }
1505  return vals;
1506};
1507
1508["rgb", "hsl", "hsv", "cmyk", "keyword"].forEach(function(space) {
1509   Converter.prototype[space] = function(vals) {
1510      return this.routeSpace(space, arguments);
1511   }
1512});
1513
1514module.exports = convert;
1515},{"4":4}],6:[function(require,module,exports){
1516'use strict'
1517
1518module.exports = {
1519	"aliceblue": [240, 248, 255],
1520	"antiquewhite": [250, 235, 215],
1521	"aqua": [0, 255, 255],
1522	"aquamarine": [127, 255, 212],
1523	"azure": [240, 255, 255],
1524	"beige": [245, 245, 220],
1525	"bisque": [255, 228, 196],
1526	"black": [0, 0, 0],
1527	"blanchedalmond": [255, 235, 205],
1528	"blue": [0, 0, 255],
1529	"blueviolet": [138, 43, 226],
1530	"brown": [165, 42, 42],
1531	"burlywood": [222, 184, 135],
1532	"cadetblue": [95, 158, 160],
1533	"chartreuse": [127, 255, 0],
1534	"chocolate": [210, 105, 30],
1535	"coral": [255, 127, 80],
1536	"cornflowerblue": [100, 149, 237],
1537	"cornsilk": [255, 248, 220],
1538	"crimson": [220, 20, 60],
1539	"cyan": [0, 255, 255],
1540	"darkblue": [0, 0, 139],
1541	"darkcyan": [0, 139, 139],
1542	"darkgoldenrod": [184, 134, 11],
1543	"darkgray": [169, 169, 169],
1544	"darkgreen": [0, 100, 0],
1545	"darkgrey": [169, 169, 169],
1546	"darkkhaki": [189, 183, 107],
1547	"darkmagenta": [139, 0, 139],
1548	"darkolivegreen": [85, 107, 47],
1549	"darkorange": [255, 140, 0],
1550	"darkorchid": [153, 50, 204],
1551	"darkred": [139, 0, 0],
1552	"darksalmon": [233, 150, 122],
1553	"darkseagreen": [143, 188, 143],
1554	"darkslateblue": [72, 61, 139],
1555	"darkslategray": [47, 79, 79],
1556	"darkslategrey": [47, 79, 79],
1557	"darkturquoise": [0, 206, 209],
1558	"darkviolet": [148, 0, 211],
1559	"deeppink": [255, 20, 147],
1560	"deepskyblue": [0, 191, 255],
1561	"dimgray": [105, 105, 105],
1562	"dimgrey": [105, 105, 105],
1563	"dodgerblue": [30, 144, 255],
1564	"firebrick": [178, 34, 34],
1565	"floralwhite": [255, 250, 240],
1566	"forestgreen": [34, 139, 34],
1567	"fuchsia": [255, 0, 255],
1568	"gainsboro": [220, 220, 220],
1569	"ghostwhite": [248, 248, 255],
1570	"gold": [255, 215, 0],
1571	"goldenrod": [218, 165, 32],
1572	"gray": [128, 128, 128],
1573	"green": [0, 128, 0],
1574	"greenyellow": [173, 255, 47],
1575	"grey": [128, 128, 128],
1576	"honeydew": [240, 255, 240],
1577	"hotpink": [255, 105, 180],
1578	"indianred": [205, 92, 92],
1579	"indigo": [75, 0, 130],
1580	"ivory": [255, 255, 240],
1581	"khaki": [240, 230, 140],
1582	"lavender": [230, 230, 250],
1583	"lavenderblush": [255, 240, 245],
1584	"lawngreen": [124, 252, 0],
1585	"lemonchiffon": [255, 250, 205],
1586	"lightblue": [173, 216, 230],
1587	"lightcoral": [240, 128, 128],
1588	"lightcyan": [224, 255, 255],
1589	"lightgoldenrodyellow": [250, 250, 210],
1590	"lightgray": [211, 211, 211],
1591	"lightgreen": [144, 238, 144],
1592	"lightgrey": [211, 211, 211],
1593	"lightpink": [255, 182, 193],
1594	"lightsalmon": [255, 160, 122],
1595	"lightseagreen": [32, 178, 170],
1596	"lightskyblue": [135, 206, 250],
1597	"lightslategray": [119, 136, 153],
1598	"lightslategrey": [119, 136, 153],
1599	"lightsteelblue": [176, 196, 222],
1600	"lightyellow": [255, 255, 224],
1601	"lime": [0, 255, 0],
1602	"limegreen": [50, 205, 50],
1603	"linen": [250, 240, 230],
1604	"magenta": [255, 0, 255],
1605	"maroon": [128, 0, 0],
1606	"mediumaquamarine": [102, 205, 170],
1607	"mediumblue": [0, 0, 205],
1608	"mediumorchid": [186, 85, 211],
1609	"mediumpurple": [147, 112, 219],
1610	"mediumseagreen": [60, 179, 113],
1611	"mediumslateblue": [123, 104, 238],
1612	"mediumspringgreen": [0, 250, 154],
1613	"mediumturquoise": [72, 209, 204],
1614	"mediumvioletred": [199, 21, 133],
1615	"midnightblue": [25, 25, 112],
1616	"mintcream": [245, 255, 250],
1617	"mistyrose": [255, 228, 225],
1618	"moccasin": [255, 228, 181],
1619	"navajowhite": [255, 222, 173],
1620	"navy": [0, 0, 128],
1621	"oldlace": [253, 245, 230],
1622	"olive": [128, 128, 0],
1623	"olivedrab": [107, 142, 35],
1624	"orange": [255, 165, 0],
1625	"orangered": [255, 69, 0],
1626	"orchid": [218, 112, 214],
1627	"palegoldenrod": [238, 232, 170],
1628	"palegreen": [152, 251, 152],
1629	"paleturquoise": [175, 238, 238],
1630	"palevioletred": [219, 112, 147],
1631	"papayawhip": [255, 239, 213],
1632	"peachpuff": [255, 218, 185],
1633	"peru": [205, 133, 63],
1634	"pink": [255, 192, 203],
1635	"plum": [221, 160, 221],
1636	"powderblue": [176, 224, 230],
1637	"purple": [128, 0, 128],
1638	"rebeccapurple": [102, 51, 153],
1639	"red": [255, 0, 0],
1640	"rosybrown": [188, 143, 143],
1641	"royalblue": [65, 105, 225],
1642	"saddlebrown": [139, 69, 19],
1643	"salmon": [250, 128, 114],
1644	"sandybrown": [244, 164, 96],
1645	"seagreen": [46, 139, 87],
1646	"seashell": [255, 245, 238],
1647	"sienna": [160, 82, 45],
1648	"silver": [192, 192, 192],
1649	"skyblue": [135, 206, 235],
1650	"slateblue": [106, 90, 205],
1651	"slategray": [112, 128, 144],
1652	"slategrey": [112, 128, 144],
1653	"snow": [255, 250, 250],
1654	"springgreen": [0, 255, 127],
1655	"steelblue": [70, 130, 180],
1656	"tan": [210, 180, 140],
1657	"teal": [0, 128, 128],
1658	"thistle": [216, 191, 216],
1659	"tomato": [255, 99, 71],
1660	"turquoise": [64, 224, 208],
1661	"violet": [238, 130, 238],
1662	"wheat": [245, 222, 179],
1663	"white": [255, 255, 255],
1664	"whitesmoke": [245, 245, 245],
1665	"yellow": [255, 255, 0],
1666	"yellowgreen": [154, 205, 50]
1667};
1668
1669},{}],7:[function(require,module,exports){
1670/**
1671 * @namespace Chart
1672 */
1673var Chart = require(30)();
1674
1675Chart.helpers = require(46);
1676
1677// @todo dispatch these helpers into appropriated helpers/helpers.* file and write unit tests!
1678require(28)(Chart);
1679
1680Chart.Animation = require(22);
1681Chart.animationService = require(23);
1682Chart.defaults = require(26);
1683Chart.Element = require(27);
1684Chart.elements = require(41);
1685Chart.Interaction = require(29);
1686Chart.layouts = require(31);
1687Chart.platform = require(49);
1688Chart.plugins = require(32);
1689Chart.Scale = require(33);
1690Chart.scaleService = require(34);
1691Chart.Ticks = require(35);
1692Chart.Tooltip = require(36);
1693
1694require(24)(Chart);
1695require(25)(Chart);
1696
1697require(56)(Chart);
1698require(54)(Chart);
1699require(55)(Chart);
1700require(57)(Chart);
1701require(58)(Chart);
1702require(59)(Chart);
1703
1704// Controllers must be loaded after elements
1705// See Chart.core.datasetController.dataElementType
1706require(15)(Chart);
1707require(16)(Chart);
1708require(17)(Chart);
1709require(18)(Chart);
1710require(19)(Chart);
1711require(20)(Chart);
1712require(21)(Chart);
1713
1714require(8)(Chart);
1715require(9)(Chart);
1716require(10)(Chart);
1717require(11)(Chart);
1718require(12)(Chart);
1719require(13)(Chart);
1720require(14)(Chart);
1721
1722// Loading built-in plugins
1723var plugins = require(50);
1724for (var k in plugins) {
1725	if (plugins.hasOwnProperty(k)) {
1726		Chart.plugins.register(plugins[k]);
1727	}
1728}
1729
1730Chart.platform.initialize();
1731
1732module.exports = Chart;
1733if (typeof window !== 'undefined') {
1734	window.Chart = Chart;
1735}
1736
1737// DEPRECATIONS
1738
1739/**
1740 * Provided for backward compatibility, not available anymore
1741 * @namespace Chart.Legend
1742 * @deprecated since version 2.1.5
1743 * @todo remove at version 3
1744 * @private
1745 */
1746Chart.Legend = plugins.legend._element;
1747
1748/**
1749 * Provided for backward compatibility, not available anymore
1750 * @namespace Chart.Title
1751 * @deprecated since version 2.1.5
1752 * @todo remove at version 3
1753 * @private
1754 */
1755Chart.Title = plugins.title._element;
1756
1757/**
1758 * Provided for backward compatibility, use Chart.plugins instead
1759 * @namespace Chart.pluginService
1760 * @deprecated since version 2.1.5
1761 * @todo remove at version 3
1762 * @private
1763 */
1764Chart.pluginService = Chart.plugins;
1765
1766/**
1767 * Provided for backward compatibility, inheriting from Chart.PlugingBase has no
1768 * effect, instead simply create/register plugins via plain JavaScript objects.
1769 * @interface Chart.PluginBase
1770 * @deprecated since version 2.5.0
1771 * @todo remove at version 3
1772 * @private
1773 */
1774Chart.PluginBase = Chart.Element.extend({});
1775
1776/**
1777 * Provided for backward compatibility, use Chart.helpers.canvas instead.
1778 * @namespace Chart.canvasHelpers
1779 * @deprecated since version 2.6.0
1780 * @todo remove at version 3
1781 * @private
1782 */
1783Chart.canvasHelpers = Chart.helpers.canvas;
1784
1785/**
1786 * Provided for backward compatibility, use Chart.layouts instead.
1787 * @namespace Chart.layoutService
1788 * @deprecated since version 2.8.0
1789 * @todo remove at version 3
1790 * @private
1791 */
1792Chart.layoutService = Chart.layouts;
1793
1794},{"10":10,"11":11,"12":12,"13":13,"14":14,"15":15,"16":16,"17":17,"18":18,"19":19,"20":20,"21":21,"22":22,"23":23,"24":24,"25":25,"26":26,"27":27,"28":28,"29":29,"30":30,"31":31,"32":32,"33":33,"34":34,"35":35,"36":36,"41":41,"46":46,"49":49,"50":50,"54":54,"55":55,"56":56,"57":57,"58":58,"59":59,"8":8,"9":9}],8:[function(require,module,exports){
1795'use strict';
1796
1797module.exports = function(Chart) {
1798
1799	Chart.Bar = function(context, config) {
1800		config.type = 'bar';
1801
1802		return new Chart(context, config);
1803	};
1804
1805};
1806
1807},{}],9:[function(require,module,exports){
1808'use strict';
1809
1810module.exports = function(Chart) {
1811
1812	Chart.Bubble = function(context, config) {
1813		config.type = 'bubble';
1814		return new Chart(context, config);
1815	};
1816
1817};
1818
1819},{}],10:[function(require,module,exports){
1820'use strict';
1821
1822module.exports = function(Chart) {
1823
1824	Chart.Doughnut = function(context, config) {
1825		config.type = 'doughnut';
1826
1827		return new Chart(context, config);
1828	};
1829
1830};
1831
1832},{}],11:[function(require,module,exports){
1833'use strict';
1834
1835module.exports = function(Chart) {
1836
1837	Chart.Line = function(context, config) {
1838		config.type = 'line';
1839
1840		return new Chart(context, config);
1841	};
1842
1843};
1844
1845},{}],12:[function(require,module,exports){
1846'use strict';
1847
1848module.exports = function(Chart) {
1849
1850	Chart.PolarArea = function(context, config) {
1851		config.type = 'polarArea';
1852
1853		return new Chart(context, config);
1854	};
1855
1856};
1857
1858},{}],13:[function(require,module,exports){
1859'use strict';
1860
1861module.exports = function(Chart) {
1862
1863	Chart.Radar = function(context, config) {
1864		config.type = 'radar';
1865
1866		return new Chart(context, config);
1867	};
1868
1869};
1870
1871},{}],14:[function(require,module,exports){
1872'use strict';
1873
1874module.exports = function(Chart) {
1875	Chart.Scatter = function(context, config) {
1876		config.type = 'scatter';
1877		return new Chart(context, config);
1878	};
1879};
1880
1881},{}],15:[function(require,module,exports){
1882'use strict';
1883
1884var defaults = require(26);
1885var elements = require(41);
1886var helpers = require(46);
1887
1888defaults._set('bar', {
1889	hover: {
1890		mode: 'label'
1891	},
1892
1893	scales: {
1894		xAxes: [{
1895			type: 'category',
1896
1897			// Specific to Bar Controller
1898			categoryPercentage: 0.8,
1899			barPercentage: 0.9,
1900
1901			// offset settings
1902			offset: true,
1903
1904			// grid line settings
1905			gridLines: {
1906				offsetGridLines: true
1907			}
1908		}],
1909
1910		yAxes: [{
1911			type: 'linear'
1912		}]
1913	}
1914});
1915
1916defaults._set('horizontalBar', {
1917	hover: {
1918		mode: 'index',
1919		axis: 'y'
1920	},
1921
1922	scales: {
1923		xAxes: [{
1924			type: 'linear',
1925			position: 'bottom'
1926		}],
1927
1928		yAxes: [{
1929			position: 'left',
1930			type: 'category',
1931
1932			// Specific to Horizontal Bar Controller
1933			categoryPercentage: 0.8,
1934			barPercentage: 0.9,
1935
1936			// offset settings
1937			offset: true,
1938
1939			// grid line settings
1940			gridLines: {
1941				offsetGridLines: true
1942			}
1943		}]
1944	},
1945
1946	elements: {
1947		rectangle: {
1948			borderSkipped: 'left'
1949		}
1950	},
1951
1952	tooltips: {
1953		callbacks: {
1954			title: function(item, data) {
1955				// Pick first xLabel for now
1956				var title = '';
1957
1958				if (item.length > 0) {
1959					if (item[0].yLabel) {
1960						title = item[0].yLabel;
1961					} else if (data.labels.length > 0 && item[0].index < data.labels.length) {
1962						title = data.labels[item[0].index];
1963					}
1964				}
1965
1966				return title;
1967			},
1968
1969			label: function(item, data) {
1970				var datasetLabel = data.datasets[item.datasetIndex].label || '';
1971				return datasetLabel + ': ' + item.xLabel;
1972			}
1973		},
1974		mode: 'index',
1975		axis: 'y'
1976	}
1977});
1978
1979/**
1980 * Computes the "optimal" sample size to maintain bars equally sized while preventing overlap.
1981 * @private
1982 */
1983function computeMinSampleSize(scale, pixels) {
1984	var min = scale.isHorizontal() ? scale.width : scale.height;
1985	var ticks = scale.getTicks();
1986	var prev, curr, i, ilen;
1987
1988	for (i = 1, ilen = pixels.length; i < ilen; ++i) {
1989		min = Math.min(min, pixels[i] - pixels[i - 1]);
1990	}
1991
1992	for (i = 0, ilen = ticks.length; i < ilen; ++i) {
1993		curr = scale.getPixelForTick(i);
1994		min = i > 0 ? Math.min(min, curr - prev) : min;
1995		prev = curr;
1996	}
1997
1998	return min;
1999}
2000
2001/**
2002 * Computes an "ideal" category based on the absolute bar thickness or, if undefined or null,
2003 * uses the smallest interval (see computeMinSampleSize) that prevents bar overlapping. This
2004 * mode currently always generates bars equally sized (until we introduce scriptable options?).
2005 * @private
2006 */
2007function computeFitCategoryTraits(index, ruler, options) {
2008	var thickness = options.barThickness;
2009	var count = ruler.stackCount;
2010	var curr = ruler.pixels[index];
2011	var size, ratio;
2012
2013	if (helpers.isNullOrUndef(thickness)) {
2014		size = ruler.min * options.categoryPercentage;
2015		ratio = options.barPercentage;
2016	} else {
2017		// When bar thickness is enforced, category and bar percentages are ignored.
2018		// Note(SB): we could add support for relative bar thickness (e.g. barThickness: '50%')
2019		// and deprecate barPercentage since this value is ignored when thickness is absolute.
2020		size = thickness * count;
2021		ratio = 1;
2022	}
2023
2024	return {
2025		chunk: size / count,
2026		ratio: ratio,
2027		start: curr - (size / 2)
2028	};
2029}
2030
2031/**
2032 * Computes an "optimal" category that globally arranges bars side by side (no gap when
2033 * percentage options are 1), based on the previous and following categories. This mode
2034 * generates bars with different widths when data are not evenly spaced.
2035 * @private
2036 */
2037function computeFlexCategoryTraits(index, ruler, options) {
2038	var pixels = ruler.pixels;
2039	var curr = pixels[index];
2040	var prev = index > 0 ? pixels[index - 1] : null;
2041	var next = index < pixels.length - 1 ? pixels[index + 1] : null;
2042	var percent = options.categoryPercentage;
2043	var start, size;
2044
2045	if (prev === null) {
2046		// first data: its size is double based on the next point or,
2047		// if it's also the last data, we use the scale end extremity.
2048		prev = curr - (next === null ? ruler.end - curr : next - curr);
2049	}
2050
2051	if (next === null) {
2052		// last data: its size is also double based on the previous point.
2053		next = curr + curr - prev;
2054	}
2055
2056	start = curr - ((curr - prev) / 2) * percent;
2057	size = ((next - prev) / 2) * percent;
2058
2059	return {
2060		chunk: size / ruler.stackCount,
2061		ratio: options.barPercentage,
2062		start: start
2063	};
2064}
2065
2066module.exports = function(Chart) {
2067
2068	Chart.controllers.bar = Chart.DatasetController.extend({
2069
2070		dataElementType: elements.Rectangle,
2071
2072		initialize: function() {
2073			var me = this;
2074			var meta;
2075
2076			Chart.DatasetController.prototype.initialize.apply(me, arguments);
2077
2078			meta = me.getMeta();
2079			meta.stack = me.getDataset().stack;
2080			meta.bar = true;
2081		},
2082
2083		update: function(reset) {
2084			var me = this;
2085			var rects = me.getMeta().data;
2086			var i, ilen;
2087
2088			me._ruler = me.getRuler();
2089
2090			for (i = 0, ilen = rects.length; i < ilen; ++i) {
2091				me.updateElement(rects[i], i, reset);
2092			}
2093		},
2094
2095		updateElement: function(rectangle, index, reset) {
2096			var me = this;
2097			var chart = me.chart;
2098			var meta = me.getMeta();
2099			var dataset = me.getDataset();
2100			var custom = rectangle.custom || {};
2101			var rectangleOptions = chart.options.elements.rectangle;
2102
2103			rectangle._xScale = me.getScaleForId(meta.xAxisID);
2104			rectangle._yScale = me.getScaleForId(meta.yAxisID);
2105			rectangle._datasetIndex = me.index;
2106			rectangle._index = index;
2107
2108			rectangle._model = {
2109				datasetLabel: dataset.label,
2110				label: chart.data.labels[index],
2111				borderSkipped: custom.borderSkipped ? custom.borderSkipped : rectangleOptions.borderSkipped,
2112				backgroundColor: custom.backgroundColor ? custom.backgroundColor : helpers.valueAtIndexOrDefault(dataset.backgroundColor, index, rectangleOptions.backgroundColor),
2113				borderColor: custom.borderColor ? custom.borderColor : helpers.valueAtIndexOrDefault(dataset.borderColor, index, rectangleOptions.borderColor),
2114				borderWidth: custom.borderWidth ? custom.borderWidth : helpers.valueAtIndexOrDefault(dataset.borderWidth, index, rectangleOptions.borderWidth)
2115			};
2116
2117			me.updateElementGeometry(rectangle, index, reset);
2118
2119			rectangle.pivot();
2120		},
2121
2122		/**
2123		 * @private
2124		 */
2125		updateElementGeometry: function(rectangle, index, reset) {
2126			var me = this;
2127			var model = rectangle._model;
2128			var vscale = me.getValueScale();
2129			var base = vscale.getBasePixel();
2130			var horizontal = vscale.isHorizontal();
2131			var ruler = me._ruler || me.getRuler();
2132			var vpixels = me.calculateBarValuePixels(me.index, index);
2133			var ipixels = me.calculateBarIndexPixels(me.index, index, ruler);
2134
2135			model.horizontal = horizontal;
2136			model.base = reset ? base : vpixels.base;
2137			model.x = horizontal ? reset ? base : vpixels.head : ipixels.center;
2138			model.y = horizontal ? ipixels.center : reset ? base : vpixels.head;
2139			model.height = horizontal ? ipixels.size : undefined;
2140			model.width = horizontal ? undefined : ipixels.size;
2141		},
2142
2143		/**
2144		 * @private
2145		 */
2146		getValueScaleId: function() {
2147			return this.getMeta().yAxisID;
2148		},
2149
2150		/**
2151		 * @private
2152		 */
2153		getIndexScaleId: function() {
2154			return this.getMeta().xAxisID;
2155		},
2156
2157		/**
2158		 * @private
2159		 */
2160		getValueScale: function() {
2161			return this.getScaleForId(this.getValueScaleId());
2162		},
2163
2164		/**
2165		 * @private
2166		 */
2167		getIndexScale: function() {
2168			return this.getScaleForId(this.getIndexScaleId());
2169		},
2170
2171		/**
2172		 * Returns the stacks based on groups and bar visibility.
2173		 * @param {Number} [last] - The dataset index
2174		 * @returns {Array} The stack list
2175		 * @private
2176		 */
2177		_getStacks: function(last) {
2178			var me = this;
2179			var chart = me.chart;
2180			var scale = me.getIndexScale();
2181			var stacked = scale.options.stacked;
2182			var ilen = last === undefined ? chart.data.datasets.length : last + 1;
2183			var stacks = [];
2184			var i, meta;
2185
2186			for (i = 0; i < ilen; ++i) {
2187				meta = chart.getDatasetMeta(i);
2188				if (meta.bar && chart.isDatasetVisible(i) &&
2189					(stacked === false ||
2190					(stacked === true && stacks.indexOf(meta.stack) === -1) ||
2191					(stacked === undefined && (meta.stack === undefined || stacks.indexOf(meta.stack) === -1)))) {
2192					stacks.push(meta.stack);
2193				}
2194			}
2195
2196			return stacks;
2197		},
2198
2199		/**
2200		 * Returns the effective number of stacks based on groups and bar visibility.
2201		 * @private
2202		 */
2203		getStackCount: function() {
2204			return this._getStacks().length;
2205		},
2206
2207		/**
2208		 * Returns the stack index for the given dataset based on groups and bar visibility.
2209		 * @param {Number} [datasetIndex] - The dataset index
2210		 * @param {String} [name] - The stack name to find
2211		 * @returns {Number} The stack index
2212		 * @private
2213		 */
2214		getStackIndex: function(datasetIndex, name) {
2215			var stacks = this._getStacks(datasetIndex);
2216			var index = (name !== undefined)
2217				? stacks.indexOf(name)
2218				: -1; // indexOf returns -1 if element is not present
2219
2220			return (index === -1)
2221				? stacks.length - 1
2222				: index;
2223		},
2224
2225		/**
2226		 * @private
2227		 */
2228		getRuler: function() {
2229			var me = this;
2230			var scale = me.getIndexScale();
2231			var stackCount = me.getStackCount();
2232			var datasetIndex = me.index;
2233			var isHorizontal = scale.isHorizontal();
2234			var start = isHorizontal ? scale.left : scale.top;
2235			var end = start + (isHorizontal ? scale.width : scale.height);
2236			var pixels = [];
2237			var i, ilen, min;
2238
2239			for (i = 0, ilen = me.getMeta().data.length; i < ilen; ++i) {
2240				pixels.push(scale.getPixelForValue(null, i, datasetIndex));
2241			}
2242
2243			min = helpers.isNullOrUndef(scale.options.barThickness)
2244				? computeMinSampleSize(scale, pixels)
2245				: -1;
2246
2247			return {
2248				min: min,
2249				pixels: pixels,
2250				start: start,
2251				end: end,
2252				stackCount: stackCount,
2253				scale: scale
2254			};
2255		},
2256
2257		/**
2258		 * Note: pixel values are not clamped to the scale area.
2259		 * @private
2260		 */
2261		calculateBarValuePixels: function(datasetIndex, index) {
2262			var me = this;
2263			var chart = me.chart;
2264			var meta = me.getMeta();
2265			var scale = me.getValueScale();
2266			var datasets = chart.data.datasets;
2267			var value = scale.getRightValue(datasets[datasetIndex].data[index]);
2268			var stacked = scale.options.stacked;
2269			var stack = meta.stack;
2270			var start = 0;
2271			var i, imeta, ivalue, base, head, size;
2272
2273			if (stacked || (stacked === undefined && stack !== undefined)) {
2274				for (i = 0; i < datasetIndex; ++i) {
2275					imeta = chart.getDatasetMeta(i);
2276
2277					if (imeta.bar &&
2278						imeta.stack === stack &&
2279						imeta.controller.getValueScaleId() === scale.id &&
2280						chart.isDatasetVisible(i)) {
2281
2282						ivalue = scale.getRightValue(datasets[i].data[index]);
2283						if ((value < 0 && ivalue < 0) || (value >= 0 && ivalue > 0)) {
2284							start += ivalue;
2285						}
2286					}
2287				}
2288			}
2289
2290			base = scale.getPixelForValue(start);
2291			head = scale.getPixelForValue(start + value);
2292			size = (head - base) / 2;
2293
2294			return {
2295				size: size,
2296				base: base,
2297				head: head,
2298				center: head + size / 2
2299			};
2300		},
2301
2302		/**
2303		 * @private
2304		 */
2305		calculateBarIndexPixels: function(datasetIndex, index, ruler) {
2306			var me = this;
2307			var options = ruler.scale.options;
2308			var range = options.barThickness === 'flex'
2309				? computeFlexCategoryTraits(index, ruler, options)
2310				: computeFitCategoryTraits(index, ruler, options);
2311
2312			var stackIndex = me.getStackIndex(datasetIndex, me.getMeta().stack);
2313			var center = range.start + (range.chunk * stackIndex) + (range.chunk / 2);
2314			var size = Math.min(
2315				helpers.valueOrDefault(options.maxBarThickness, Infinity),
2316				range.chunk * range.ratio);
2317
2318			return {
2319				base: center - size / 2,
2320				head: center + size / 2,
2321				center: center,
2322				size: size
2323			};
2324		},
2325
2326		draw: function() {
2327			var me = this;
2328			var chart = me.chart;
2329			var scale = me.getValueScale();
2330			var rects = me.getMeta().data;
2331			var dataset = me.getDataset();
2332			var ilen = rects.length;
2333			var i = 0;
2334
2335			helpers.canvas.clipArea(chart.ctx, chart.chartArea);
2336
2337			for (; i < ilen; ++i) {
2338				if (!isNaN(scale.getRightValue(dataset.data[i]))) {
2339					rects[i].draw();
2340				}
2341			}
2342
2343			helpers.canvas.unclipArea(chart.ctx);
2344		},
2345
2346		setHoverStyle: function(rectangle) {
2347			var dataset = this.chart.data.datasets[rectangle._datasetIndex];
2348			var index = rectangle._index;
2349			var custom = rectangle.custom || {};
2350			var model = rectangle._model;
2351
2352			model.backgroundColor = custom.hoverBackgroundColor ? custom.hoverBackgroundColor : helpers.valueAtIndexOrDefault(dataset.hoverBackgroundColor, index, helpers.getHoverColor(model.backgroundColor));
2353			model.borderColor = custom.hoverBorderColor ? custom.hoverBorderColor : helpers.valueAtIndexOrDefault(dataset.hoverBorderColor, index, helpers.getHoverColor(model.borderColor));
2354			model.borderWidth = custom.hoverBorderWidth ? custom.hoverBorderWidth : helpers.valueAtIndexOrDefault(dataset.hoverBorderWidth, index, model.borderWidth);
2355		},
2356
2357		removeHoverStyle: function(rectangle) {
2358			var dataset = this.chart.data.datasets[rectangle._datasetIndex];
2359			var index = rectangle._index;
2360			var custom = rectangle.custom || {};
2361			var model = rectangle._model;
2362			var rectangleElementOptions = this.chart.options.elements.rectangle;
2363
2364			model.backgroundColor = custom.backgroundColor ? custom.backgroundColor : helpers.valueAtIndexOrDefault(dataset.backgroundColor, index, rectangleElementOptions.backgroundColor);
2365			model.borderColor = custom.borderColor ? custom.borderColor : helpers.valueAtIndexOrDefault(dataset.borderColor, index, rectangleElementOptions.borderColor);
2366			model.borderWidth = custom.borderWidth ? custom.borderWidth : helpers.valueAtIndexOrDefault(dataset.borderWidth, index, rectangleElementOptions.borderWidth);
2367		}
2368	});
2369
2370	Chart.controllers.horizontalBar = Chart.controllers.bar.extend({
2371		/**
2372		 * @private
2373		 */
2374		getValueScaleId: function() {
2375			return this.getMeta().xAxisID;
2376		},
2377
2378		/**
2379		 * @private
2380		 */
2381		getIndexScaleId: function() {
2382			return this.getMeta().yAxisID;
2383		}
2384	});
2385};
2386
2387},{"26":26,"41":41,"46":46}],16:[function(require,module,exports){
2388'use strict';
2389
2390var defaults = require(26);
2391var elements = require(41);
2392var helpers = require(46);
2393
2394defaults._set('bubble', {
2395	hover: {
2396		mode: 'single'
2397	},
2398
2399	scales: {
2400		xAxes: [{
2401			type: 'linear', // bubble should probably use a linear scale by default
2402			position: 'bottom',
2403			id: 'x-axis-0' // need an ID so datasets can reference the scale
2404		}],
2405		yAxes: [{
2406			type: 'linear',
2407			position: 'left',
2408			id: 'y-axis-0'
2409		}]
2410	},
2411
2412	tooltips: {
2413		callbacks: {
2414			title: function() {
2415				// Title doesn't make sense for scatter since we format the data as a point
2416				return '';
2417			},
2418			label: function(item, data) {
2419				var datasetLabel = data.datasets[item.datasetIndex].label || '';
2420				var dataPoint = data.datasets[item.datasetIndex].data[item.index];
2421				return datasetLabel + ': (' + item.xLabel + ', ' + item.yLabel + ', ' + dataPoint.r + ')';
2422			}
2423		}
2424	}
2425});
2426
2427
2428module.exports = function(Chart) {
2429
2430	Chart.controllers.bubble = Chart.DatasetController.extend({
2431		/**
2432		 * @protected
2433		 */
2434		dataElementType: elements.Point,
2435
2436		/**
2437		 * @protected
2438		 */
2439		update: function(reset) {
2440			var me = this;
2441			var meta = me.getMeta();
2442			var points = meta.data;
2443
2444			// Update Points
2445			helpers.each(points, function(point, index) {
2446				me.updateElement(point, index, reset);
2447			});
2448		},
2449
2450		/**
2451		 * @protected
2452		 */
2453		updateElement: function(point, index, reset) {
2454			var me = this;
2455			var meta = me.getMeta();
2456			var custom = point.custom || {};
2457			var xScale = me.getScaleForId(meta.xAxisID);
2458			var yScale = me.getScaleForId(meta.yAxisID);
2459			var options = me._resolveElementOptions(point, index);
2460			var data = me.getDataset().data[index];
2461			var dsIndex = me.index;
2462
2463			var x = reset ? xScale.getPixelForDecimal(0.5) : xScale.getPixelForValue(typeof data === 'object' ? data : NaN, index, dsIndex);
2464			var y = reset ? yScale.getBasePixel() : yScale.getPixelForValue(data, index, dsIndex);
2465
2466			point._xScale = xScale;
2467			point._yScale = yScale;
2468			point._options = options;
2469			point._datasetIndex = dsIndex;
2470			point._index = index;
2471			point._model = {
2472				backgroundColor: options.backgroundColor,
2473				borderColor: options.borderColor,
2474				borderWidth: options.borderWidth,
2475				hitRadius: options.hitRadius,
2476				pointStyle: options.pointStyle,
2477				radius: reset ? 0 : options.radius,
2478				skip: custom.skip || isNaN(x) || isNaN(y),
2479				x: x,
2480				y: y,
2481			};
2482
2483			point.pivot();
2484		},
2485
2486		/**
2487		 * @protected
2488		 */
2489		setHoverStyle: function(point) {
2490			var model = point._model;
2491			var options = point._options;
2492
2493			model.backgroundColor = helpers.valueOrDefault(options.hoverBackgroundColor, helpers.getHoverColor(options.backgroundColor));
2494			model.borderColor = helpers.valueOrDefault(options.hoverBorderColor, helpers.getHoverColor(options.borderColor));
2495			model.borderWidth = helpers.valueOrDefault(options.hoverBorderWidth, options.borderWidth);
2496			model.radius = options.radius + options.hoverRadius;
2497		},
2498
2499		/**
2500		 * @protected
2501		 */
2502		removeHoverStyle: function(point) {
2503			var model = point._model;
2504			var options = point._options;
2505
2506			model.backgroundColor = options.backgroundColor;
2507			model.borderColor = options.borderColor;
2508			model.borderWidth = options.borderWidth;
2509			model.radius = options.radius;
2510		},
2511
2512		/**
2513		 * @private
2514		 */
2515		_resolveElementOptions: function(point, index) {
2516			var me = this;
2517			var chart = me.chart;
2518			var datasets = chart.data.datasets;
2519			var dataset = datasets[me.index];
2520			var custom = point.custom || {};
2521			var options = chart.options.elements.point;
2522			var resolve = helpers.options.resolve;
2523			var data = dataset.data[index];
2524			var values = {};
2525			var i, ilen, key;
2526
2527			// Scriptable options
2528			var context = {
2529				chart: chart,
2530				dataIndex: index,
2531				dataset: dataset,
2532				datasetIndex: me.index
2533			};
2534
2535			var keys = [
2536				'backgroundColor',
2537				'borderColor',
2538				'borderWidth',
2539				'hoverBackgroundColor',
2540				'hoverBorderColor',
2541				'hoverBorderWidth',
2542				'hoverRadius',
2543				'hitRadius',
2544				'pointStyle'
2545			];
2546
2547			for (i = 0, ilen = keys.length; i < ilen; ++i) {
2548				key = keys[i];
2549				values[key] = resolve([
2550					custom[key],
2551					dataset[key],
2552					options[key]
2553				], context, index);
2554			}
2555
2556			// Custom radius resolution
2557			values.radius = resolve([
2558				custom.radius,
2559				data ? data.r : undefined,
2560				dataset.radius,
2561				options.radius
2562			], context, index);
2563
2564			return values;
2565		}
2566	});
2567};
2568
2569},{"26":26,"41":41,"46":46}],17:[function(require,module,exports){
2570'use strict';
2571
2572var defaults = require(26);
2573var elements = require(41);
2574var helpers = require(46);
2575
2576defaults._set('doughnut', {
2577	animation: {
2578		// Boolean - Whether we animate the rotation of the Doughnut
2579		animateRotate: true,
2580		// Boolean - Whether we animate scaling the Doughnut from the centre
2581		animateScale: false
2582	},
2583	hover: {
2584		mode: 'single'
2585	},
2586	legendCallback: function(chart) {
2587		var text = [];
2588		text.push('<ul class="' + chart.id + '-legend">');
2589
2590		var data = chart.data;
2591		var datasets = data.datasets;
2592		var labels = data.labels;
2593
2594		if (datasets.length) {
2595			for (var i = 0; i < datasets[0].data.length; ++i) {
2596				text.push('<li><span style="background-color:' + datasets[0].backgroundColor[i] + '"></span>');
2597				if (labels[i]) {
2598					text.push(labels[i]);
2599				}
2600				text.push('</li>');
2601			}
2602		}
2603
2604		text.push('</ul>');
2605		return text.join('');
2606	},
2607	legend: {
2608		labels: {
2609			generateLabels: function(chart) {
2610				var data = chart.data;
2611				if (data.labels.length && data.datasets.length) {
2612					return data.labels.map(function(label, i) {
2613						var meta = chart.getDatasetMeta(0);
2614						var ds = data.datasets[0];
2615						var arc = meta.data[i];
2616						var custom = arc && arc.custom || {};
2617						var valueAtIndexOrDefault = helpers.valueAtIndexOrDefault;
2618						var arcOpts = chart.options.elements.arc;
2619						var fill = custom.backgroundColor ? custom.backgroundColor : valueAtIndexOrDefault(ds.backgroundColor, i, arcOpts.backgroundColor);
2620						var stroke = custom.borderColor ? custom.borderColor : valueAtIndexOrDefault(ds.borderColor, i, arcOpts.borderColor);
2621						var bw = custom.borderWidth ? custom.borderWidth : valueAtIndexOrDefault(ds.borderWidth, i, arcOpts.borderWidth);
2622
2623						return {
2624							text: label,
2625							fillStyle: fill,
2626							strokeStyle: stroke,
2627							lineWidth: bw,
2628							hidden: isNaN(ds.data[i]) || meta.data[i].hidden,
2629
2630							// Extra data used for toggling the correct item
2631							index: i
2632						};
2633					});
2634				}
2635				return [];
2636			}
2637		},
2638
2639		onClick: function(e, legendItem) {
2640			var index = legendItem.index;
2641			var chart = this.chart;
2642			var i, ilen, meta;
2643
2644			for (i = 0, ilen = (chart.data.datasets || []).length; i < ilen; ++i) {
2645				meta = chart.getDatasetMeta(i);
2646				// toggle visibility of index if exists
2647				if (meta.data[index]) {
2648					meta.data[index].hidden = !meta.data[index].hidden;
2649				}
2650			}
2651
2652			chart.update();
2653		}
2654	},
2655
2656	// The percentage of the chart that we cut out of the middle.
2657	cutoutPercentage: 50,
2658
2659	// The rotation of the chart, where the first data arc begins.
2660	rotation: Math.PI * -0.5,
2661
2662	// The total circumference of the chart.
2663	circumference: Math.PI * 2.0,
2664
2665	// Need to override these to give a nice default
2666	tooltips: {
2667		callbacks: {
2668			title: function() {
2669				return '';
2670			},
2671			label: function(tooltipItem, data) {
2672				var dataLabel = data.labels[tooltipItem.index];
2673				var value = ': ' + data.datasets[tooltipItem.datasetIndex].data[tooltipItem.index];
2674
2675				if (helpers.isArray(dataLabel)) {
2676					// show value on first line of multiline label
2677					// need to clone because we are changing the value
2678					dataLabel = dataLabel.slice();
2679					dataLabel[0] += value;
2680				} else {
2681					dataLabel += value;
2682				}
2683
2684				return dataLabel;
2685			}
2686		}
2687	}
2688});
2689
2690defaults._set('pie', helpers.clone(defaults.doughnut));
2691defaults._set('pie', {
2692	cutoutPercentage: 0
2693});
2694
2695module.exports = function(Chart) {
2696
2697	Chart.controllers.doughnut = Chart.controllers.pie = Chart.DatasetController.extend({
2698
2699		dataElementType: elements.Arc,
2700
2701		linkScales: helpers.noop,
2702
2703		// Get index of the dataset in relation to the visible datasets. This allows determining the inner and outer radius correctly
2704		getRingIndex: function(datasetIndex) {
2705			var ringIndex = 0;
2706
2707			for (var j = 0; j < datasetIndex; ++j) {
2708				if (this.chart.isDatasetVisible(j)) {
2709					++ringIndex;
2710				}
2711			}
2712
2713			return ringIndex;
2714		},
2715
2716		update: function(reset) {
2717			var me = this;
2718			var chart = me.chart;
2719			var chartArea = chart.chartArea;
2720			var opts = chart.options;
2721			var arcOpts = opts.elements.arc;
2722			var availableWidth = chartArea.right - chartArea.left - arcOpts.borderWidth;
2723			var availableHeight = chartArea.bottom - chartArea.top - arcOpts.borderWidth;
2724			var minSize = Math.min(availableWidth, availableHeight);
2725			var offset = {x: 0, y: 0};
2726			var meta = me.getMeta();
2727			var cutoutPercentage = opts.cutoutPercentage;
2728			var circumference = opts.circumference;
2729
2730			// If the chart's circumference isn't a full circle, calculate minSize as a ratio of the width/height of the arc
2731			if (circumference < Math.PI * 2.0) {
2732				var startAngle = opts.rotation % (Math.PI * 2.0);
2733				startAngle += Math.PI * 2.0 * (startAngle >= Math.PI ? -1 : startAngle < -Math.PI ? 1 : 0);
2734				var endAngle = startAngle + circumference;
2735				var start = {x: Math.cos(startAngle), y: Math.sin(startAngle)};
2736				var end = {x: Math.cos(endAngle), y: Math.sin(endAngle)};
2737				var contains0 = (startAngle <= 0 && endAngle >= 0) || (startAngle <= Math.PI * 2.0 && Math.PI * 2.0 <= endAngle);
2738				var contains90 = (startAngle <= Math.PI * 0.5 && Math.PI * 0.5 <= endAngle) || (startAngle <= Math.PI * 2.5 && Math.PI * 2.5 <= endAngle);
2739				var contains180 = (startAngle <= -Math.PI && -Math.PI <= endAngle) || (startAngle <= Math.PI && Math.PI <= endAngle);
2740				var contains270 = (startAngle <= -Math.PI * 0.5 && -Math.PI * 0.5 <= endAngle) || (startAngle <= Math.PI * 1.5 && Math.PI * 1.5 <= endAngle);
2741				var cutout = cutoutPercentage / 100.0;
2742				var min = {x: contains180 ? -1 : Math.min(start.x * (start.x < 0 ? 1 : cutout), end.x * (end.x < 0 ? 1 : cutout)), y: contains270 ? -1 : Math.min(start.y * (start.y < 0 ? 1 : cutout), end.y * (end.y < 0 ? 1 : cutout))};
2743				var max = {x: contains0 ? 1 : Math.max(start.x * (start.x > 0 ? 1 : cutout), end.x * (end.x > 0 ? 1 : cutout)), y: contains90 ? 1 : Math.max(start.y * (start.y > 0 ? 1 : cutout), end.y * (end.y > 0 ? 1 : cutout))};
2744				var size = {width: (max.x - min.x) * 0.5, height: (max.y - min.y) * 0.5};
2745				minSize = Math.min(availableWidth / size.width, availableHeight / size.height);
2746				offset = {x: (max.x + min.x) * -0.5, y: (max.y + min.y) * -0.5};
2747			}
2748
2749			chart.borderWidth = me.getMaxBorderWidth(meta.data);
2750			chart.outerRadius = Math.max((minSize - chart.borderWidth) / 2, 0);
2751			chart.innerRadius = Math.max(cutoutPercentage ? (chart.outerRadius / 100) * (cutoutPercentage) : 0, 0);
2752			chart.radiusLength = (chart.outerRadius - chart.innerRadius) / chart.getVisibleDatasetCount();
2753			chart.offsetX = offset.x * chart.outerRadius;
2754			chart.offsetY = offset.y * chart.outerRadius;
2755
2756			meta.total = me.calculateTotal();
2757
2758			me.outerRadius = chart.outerRadius - (chart.radiusLength * me.getRingIndex(me.index));
2759			me.innerRadius = Math.max(me.outerRadius - chart.radiusLength, 0);
2760
2761			helpers.each(meta.data, function(arc, index) {
2762				me.updateElement(arc, index, reset);
2763			});
2764		},
2765
2766		updateElement: function(arc, index, reset) {
2767			var me = this;
2768			var chart = me.chart;
2769			var chartArea = chart.chartArea;
2770			var opts = chart.options;
2771			var animationOpts = opts.animation;
2772			var centerX = (chartArea.left + chartArea.right) / 2;
2773			var centerY = (chartArea.top + chartArea.bottom) / 2;
2774			var startAngle = opts.rotation; // non reset case handled later
2775			var endAngle = opts.rotation; // non reset case handled later
2776			var dataset = me.getDataset();
2777			var circumference = reset && animationOpts.animateRotate ? 0 : arc.hidden ? 0 : me.calculateCircumference(dataset.data[index]) * (opts.circumference / (2.0 * Math.PI));
2778			var innerRadius = reset && animationOpts.animateScale ? 0 : me.innerRadius;
2779			var outerRadius = reset && animationOpts.animateScale ? 0 : me.outerRadius;
2780			var valueAtIndexOrDefault = helpers.valueAtIndexOrDefault;
2781
2782			helpers.extend(arc, {
2783				// Utility
2784				_datasetIndex: me.index,
2785				_index: index,
2786
2787				// Desired view properties
2788				_model: {
2789					x: centerX + chart.offsetX,
2790					y: centerY + chart.offsetY,
2791					startAngle: startAngle,
2792					endAngle: endAngle,
2793					circumference: circumference,
2794					outerRadius: outerRadius,
2795					innerRadius: innerRadius,
2796					label: valueAtIndexOrDefault(dataset.label, index, chart.data.labels[index])
2797				}
2798			});
2799
2800			var model = arc._model;
2801			// Resets the visual styles
2802			this.removeHoverStyle(arc);
2803
2804			// Set correct angles if not resetting
2805			if (!reset || !animationOpts.animateRotate) {
2806				if (index === 0) {
2807					model.startAngle = opts.rotation;
2808				} else {
2809					model.startAngle = me.getMeta().data[index - 1]._model.endAngle;
2810				}
2811
2812				model.endAngle = model.startAngle + model.circumference;
2813			}
2814
2815			arc.pivot();
2816		},
2817
2818		removeHoverStyle: function(arc) {
2819			Chart.DatasetController.prototype.removeHoverStyle.call(this, arc, this.chart.options.elements.arc);
2820		},
2821
2822		calculateTotal: function() {
2823			var dataset = this.getDataset();
2824			var meta = this.getMeta();
2825			var total = 0;
2826			var value;
2827
2828			helpers.each(meta.data, function(element, index) {
2829				value = dataset.data[index];
2830				if (!isNaN(value) && !element.hidden) {
2831					total += Math.abs(value);
2832				}
2833			});
2834
2835			/* if (total === 0) {
2836				total = NaN;
2837			}*/
2838
2839			return total;
2840		},
2841
2842		calculateCircumference: function(value) {
2843			var total = this.getMeta().total;
2844			if (total > 0 && !isNaN(value)) {
2845				return (Math.PI * 2.0) * (Math.abs(value) / total);
2846			}
2847			return 0;
2848		},
2849
2850		// gets the max border or hover width to properly scale pie charts
2851		getMaxBorderWidth: function(arcs) {
2852			var max = 0;
2853			var index = this.index;
2854			var length = arcs.length;
2855			var borderWidth;
2856			var hoverWidth;
2857
2858			for (var i = 0; i < length; i++) {
2859				borderWidth = arcs[i]._model ? arcs[i]._model.borderWidth : 0;
2860				hoverWidth = arcs[i]._chart ? arcs[i]._chart.config.data.datasets[index].hoverBorderWidth : 0;
2861
2862				max = borderWidth > max ? borderWidth : max;
2863				max = hoverWidth > max ? hoverWidth : max;
2864			}
2865			return max;
2866		}
2867	});
2868};
2869
2870},{"26":26,"41":41,"46":46}],18:[function(require,module,exports){
2871'use strict';
2872
2873var defaults = require(26);
2874var elements = require(41);
2875var helpers = require(46);
2876
2877defaults._set('line', {
2878	showLines: true,
2879	spanGaps: false,
2880
2881	hover: {
2882		mode: 'label'
2883	},
2884
2885	scales: {
2886		xAxes: [{
2887			type: 'category',
2888			id: 'x-axis-0'
2889		}],
2890		yAxes: [{
2891			type: 'linear',
2892			id: 'y-axis-0'
2893		}]
2894	}
2895});
2896
2897module.exports = function(Chart) {
2898
2899	function lineEnabled(dataset, options) {
2900		return helpers.valueOrDefault(dataset.showLine, options.showLines);
2901	}
2902
2903	Chart.controllers.line = Chart.DatasetController.extend({
2904
2905		datasetElementType: elements.Line,
2906
2907		dataElementType: elements.Point,
2908
2909		update: function(reset) {
2910			var me = this;
2911			var meta = me.getMeta();
2912			var line = meta.dataset;
2913			var points = meta.data || [];
2914			var options = me.chart.options;
2915			var lineElementOptions = options.elements.line;
2916			var scale = me.getScaleForId(meta.yAxisID);
2917			var i, ilen, custom;
2918			var dataset = me.getDataset();
2919			var showLine = lineEnabled(dataset, options);
2920
2921			// Update Line
2922			if (showLine) {
2923				custom = line.custom || {};
2924
2925				// Compatibility: If the properties are defined with only the old name, use those values
2926				if ((dataset.tension !== undefined) && (dataset.lineTension === undefined)) {
2927					dataset.lineTension = dataset.tension;
2928				}
2929
2930				// Utility
2931				line._scale = scale;
2932				line._datasetIndex = me.index;
2933				// Data
2934				line._children = points;
2935				// Model
2936				line._model = {
2937					// Appearance
2938					// The default behavior of lines is to break at null values, according
2939					// to https://github.com/chartjs/Chart.js/issues/2435#issuecomment-216718158
2940					// This option gives lines the ability to span gaps
2941					spanGaps: dataset.spanGaps ? dataset.spanGaps : options.spanGaps,
2942					tension: custom.tension ? custom.tension : helpers.valueOrDefault(dataset.lineTension, lineElementOptions.tension),
2943					backgroundColor: custom.backgroundColor ? custom.backgroundColor : (dataset.backgroundColor || lineElementOptions.backgroundColor),
2944					borderWidth: custom.borderWidth ? custom.borderWidth : (dataset.borderWidth || lineElementOptions.borderWidth),
2945					borderColor: custom.borderColor ? custom.borderColor : (dataset.borderColor || lineElementOptions.borderColor),
2946					borderCapStyle: custom.borderCapStyle ? custom.borderCapStyle : (dataset.borderCapStyle || lineElementOptions.borderCapStyle),
2947					borderDash: custom.borderDash ? custom.borderDash : (dataset.borderDash || lineElementOptions.borderDash),
2948					borderDashOffset: custom.borderDashOffset ? custom.borderDashOffset : (dataset.borderDashOffset || lineElementOptions.borderDashOffset),
2949					borderJoinStyle: custom.borderJoinStyle ? custom.borderJoinStyle : (dataset.borderJoinStyle || lineElementOptions.borderJoinStyle),
2950					fill: custom.fill ? custom.fill : (dataset.fill !== undefined ? dataset.fill : lineElementOptions.fill),
2951					steppedLine: custom.steppedLine ? custom.steppedLine : helpers.valueOrDefault(dataset.steppedLine, lineElementOptions.stepped),
2952					cubicInterpolationMode: custom.cubicInterpolationMode ? custom.cubicInterpolationMode : helpers.valueOrDefault(dataset.cubicInterpolationMode, lineElementOptions.cubicInterpolationMode),
2953				};
2954
2955				line.pivot();
2956			}
2957
2958			// Update Points
2959			for (i = 0, ilen = points.length; i < ilen; ++i) {
2960				me.updateElement(points[i], i, reset);
2961			}
2962
2963			if (showLine && line._model.tension !== 0) {
2964				me.updateBezierControlPoints();
2965			}
2966
2967			// Now pivot the point for animation
2968			for (i = 0, ilen = points.length; i < ilen; ++i) {
2969				points[i].pivot();
2970			}
2971		},
2972
2973		getPointBackgroundColor: function(point, index) {
2974			var backgroundColor = this.chart.options.elements.point.backgroundColor;
2975			var dataset = this.getDataset();
2976			var custom = point.custom || {};
2977
2978			if (custom.backgroundColor) {
2979				backgroundColor = custom.backgroundColor;
2980			} else if (dataset.pointBackgroundColor) {
2981				backgroundColor = helpers.valueAtIndexOrDefault(dataset.pointBackgroundColor, index, backgroundColor);
2982			} else if (dataset.backgroundColor) {
2983				backgroundColor = dataset.backgroundColor;
2984			}
2985
2986			return backgroundColor;
2987		},
2988
2989		getPointBorderColor: function(point, index) {
2990			var borderColor = this.chart.options.elements.point.borderColor;
2991			var dataset = this.getDataset();
2992			var custom = point.custom || {};
2993
2994			if (custom.borderColor) {
2995				borderColor = custom.borderColor;
2996			} else if (dataset.pointBorderColor) {
2997				borderColor = helpers.valueAtIndexOrDefault(dataset.pointBorderColor, index, borderColor);
2998			} else if (dataset.borderColor) {
2999				borderColor = dataset.borderColor;
3000			}
3001
3002			return borderColor;
3003		},
3004
3005		getPointBorderWidth: function(point, index) {
3006			var borderWidth = this.chart.options.elements.point.borderWidth;
3007			var dataset = this.getDataset();
3008			var custom = point.custom || {};
3009
3010			if (!isNaN(custom.borderWidth)) {
3011				borderWidth = custom.borderWidth;
3012			} else if (!isNaN(dataset.pointBorderWidth) || helpers.isArray(dataset.pointBorderWidth)) {
3013				borderWidth = helpers.valueAtIndexOrDefault(dataset.pointBorderWidth, index, borderWidth);
3014			} else if (!isNaN(dataset.borderWidth)) {
3015				borderWidth = dataset.borderWidth;
3016			}
3017
3018			return borderWidth;
3019		},
3020
3021		updateElement: function(point, index, reset) {
3022			var me = this;
3023			var meta = me.getMeta();
3024			var custom = point.custom || {};
3025			var dataset = me.getDataset();
3026			var datasetIndex = me.index;
3027			var value = dataset.data[index];
3028			var yScale = me.getScaleForId(meta.yAxisID);
3029			var xScale = me.getScaleForId(meta.xAxisID);
3030			var pointOptions = me.chart.options.elements.point;
3031			var x, y;
3032
3033			// Compatibility: If the properties are defined with only the old name, use those values
3034			if ((dataset.radius !== undefined) && (dataset.pointRadius === undefined)) {
3035				dataset.pointRadius = dataset.radius;
3036			}
3037			if ((dataset.hitRadius !== undefined) && (dataset.pointHitRadius === undefined)) {
3038				dataset.pointHitRadius = dataset.hitRadius;
3039			}
3040
3041			x = xScale.getPixelForValue(typeof value === 'object' ? value : NaN, index, datasetIndex);
3042			y = reset ? yScale.getBasePixel() : me.calculatePointY(value, index, datasetIndex);
3043
3044			// Utility
3045			point._xScale = xScale;
3046			point._yScale = yScale;
3047			point._datasetIndex = datasetIndex;
3048			point._index = index;
3049
3050			// Desired view properties
3051			point._model = {
3052				x: x,
3053				y: y,
3054				skip: custom.skip || isNaN(x) || isNaN(y),
3055				// Appearance
3056				radius: custom.radius || helpers.valueAtIndexOrDefault(dataset.pointRadius, index, pointOptions.radius),
3057				pointStyle: custom.pointStyle || helpers.valueAtIndexOrDefault(dataset.pointStyle, index, pointOptions.pointStyle),
3058				backgroundColor: me.getPointBackgroundColor(point, index),
3059				borderColor: me.getPointBorderColor(point, index),
3060				borderWidth: me.getPointBorderWidth(point, index),
3061				tension: meta.dataset._model ? meta.dataset._model.tension : 0,
3062				steppedLine: meta.dataset._model ? meta.dataset._model.steppedLine : false,
3063				// Tooltip
3064				hitRadius: custom.hitRadius || helpers.valueAtIndexOrDefault(dataset.pointHitRadius, index, pointOptions.hitRadius)
3065			};
3066		},
3067
3068		calculatePointY: function(value, index, datasetIndex) {
3069			var me = this;
3070			var chart = me.chart;
3071			var meta = me.getMeta();
3072			var yScale = me.getScaleForId(meta.yAxisID);
3073			var sumPos = 0;
3074			var sumNeg = 0;
3075			var i, ds, dsMeta;
3076
3077			if (yScale.options.stacked) {
3078				for (i = 0; i < datasetIndex; i++) {
3079					ds = chart.data.datasets[i];
3080					dsMeta = chart.getDatasetMeta(i);
3081					if (dsMeta.type === 'line' && dsMeta.yAxisID === yScale.id && chart.isDatasetVisible(i)) {
3082						var stackedRightValue = Number(yScale.getRightValue(ds.data[index]));
3083						if (stackedRightValue < 0) {
3084							sumNeg += stackedRightValue || 0;
3085						} else {
3086							sumPos += stackedRightValue || 0;
3087						}
3088					}
3089				}
3090
3091				var rightValue = Number(yScale.getRightValue(value));
3092				if (rightValue < 0) {
3093					return yScale.getPixelForValue(sumNeg + rightValue);
3094				}
3095				return yScale.getPixelForValue(sumPos + rightValue);
3096			}
3097
3098			return yScale.getPixelForValue(value);
3099		},
3100
3101		updateBezierControlPoints: function() {
3102			var me = this;
3103			var meta = me.getMeta();
3104			var area = me.chart.chartArea;
3105			var points = (meta.data || []);
3106			var i, ilen, point, model, controlPoints;
3107
3108			// Only consider points that are drawn in case the spanGaps option is used
3109			if (meta.dataset._model.spanGaps) {
3110				points = points.filter(function(pt) {
3111					return !pt._model.skip;
3112				});
3113			}
3114
3115			function capControlPoint(pt, min, max) {
3116				return Math.max(Math.min(pt, max), min);
3117			}
3118
3119			if (meta.dataset._model.cubicInterpolationMode === 'monotone') {
3120				helpers.splineCurveMonotone(points);
3121			} else {
3122				for (i = 0, ilen = points.length; i < ilen; ++i) {
3123					point = points[i];
3124					model = point._model;
3125					controlPoints = helpers.splineCurve(
3126						helpers.previousItem(points, i)._model,
3127						model,
3128						helpers.nextItem(points, i)._model,
3129						meta.dataset._model.tension
3130					);
3131					model.controlPointPreviousX = controlPoints.previous.x;
3132					model.controlPointPreviousY = controlPoints.previous.y;
3133					model.controlPointNextX = controlPoints.next.x;
3134					model.controlPointNextY = controlPoints.next.y;
3135				}
3136			}
3137
3138			if (me.chart.options.elements.line.capBezierPoints) {
3139				for (i = 0, ilen = points.length; i < ilen; ++i) {
3140					model = points[i]._model;
3141					model.controlPointPreviousX = capControlPoint(model.controlPointPreviousX, area.left, area.right);
3142					model.controlPointPreviousY = capControlPoint(model.controlPointPreviousY, area.top, area.bottom);
3143					model.controlPointNextX = capControlPoint(model.controlPointNextX, area.left, area.right);
3144					model.controlPointNextY = capControlPoint(model.controlPointNextY, area.top, area.bottom);
3145				}
3146			}
3147		},
3148
3149		draw: function() {
3150			var me = this;
3151			var chart = me.chart;
3152			var meta = me.getMeta();
3153			var points = meta.data || [];
3154			var area = chart.chartArea;
3155			var ilen = points.length;
3156			var halfBorderWidth;
3157			var i = 0;
3158
3159			if (lineEnabled(me.getDataset(), chart.options)) {
3160				halfBorderWidth = (meta.dataset._model.borderWidth || 0) / 2;
3161
3162				helpers.canvas.clipArea(chart.ctx, {
3163					left: area.left,
3164					right: area.right,
3165					top: area.top - halfBorderWidth,
3166					bottom: area.bottom + halfBorderWidth
3167				});
3168
3169				meta.dataset.draw();
3170
3171				helpers.canvas.unclipArea(chart.ctx);
3172			}
3173
3174			// Draw the points
3175			for (; i < ilen; ++i) {
3176				points[i].draw(area);
3177			}
3178		},
3179
3180		setHoverStyle: function(point) {
3181			// Point
3182			var dataset = this.chart.data.datasets[point._datasetIndex];
3183			var index = point._index;
3184			var custom = point.custom || {};
3185			var model = point._model;
3186
3187			model.radius = custom.hoverRadius || helpers.valueAtIndexOrDefault(dataset.pointHoverRadius, index, this.chart.options.elements.point.hoverRadius);
3188			model.backgroundColor = custom.hoverBackgroundColor || helpers.valueAtIndexOrDefault(dataset.pointHoverBackgroundColor, index, helpers.getHoverColor(model.backgroundColor));
3189			model.borderColor = custom.hoverBorderColor || helpers.valueAtIndexOrDefault(dataset.pointHoverBorderColor, index, helpers.getHoverColor(model.borderColor));
3190			model.borderWidth = custom.hoverBorderWidth || helpers.valueAtIndexOrDefault(dataset.pointHoverBorderWidth, index, model.borderWidth);
3191		},
3192
3193		removeHoverStyle: function(point) {
3194			var me = this;
3195			var dataset = me.chart.data.datasets[point._datasetIndex];
3196			var index = point._index;
3197			var custom = point.custom || {};
3198			var model = point._model;
3199
3200			// Compatibility: If the properties are defined with only the old name, use those values
3201			if ((dataset.radius !== undefined) && (dataset.pointRadius === undefined)) {
3202				dataset.pointRadius = dataset.radius;
3203			}
3204
3205			model.radius = custom.radius || helpers.valueAtIndexOrDefault(dataset.pointRadius, index, me.chart.options.elements.point.radius);
3206			model.backgroundColor = me.getPointBackgroundColor(point, index);
3207			model.borderColor = me.getPointBorderColor(point, index);
3208			model.borderWidth = me.getPointBorderWidth(point, index);
3209		}
3210	});
3211};
3212
3213},{"26":26,"41":41,"46":46}],19:[function(require,module,exports){
3214'use strict';
3215
3216var defaults = require(26);
3217var elements = require(41);
3218var helpers = require(46);
3219
3220defaults._set('polarArea', {
3221	scale: {
3222		type: 'radialLinear',
3223		angleLines: {
3224			display: false
3225		},
3226		gridLines: {
3227			circular: true
3228		},
3229		pointLabels: {
3230			display: false
3231		},
3232		ticks: {
3233			beginAtZero: true
3234		}
3235	},
3236
3237	// Boolean - Whether to animate the rotation of the chart
3238	animation: {
3239		animateRotate: true,
3240		animateScale: true
3241	},
3242
3243	startAngle: -0.5 * Math.PI,
3244	legendCallback: function(chart) {
3245		var text = [];
3246		text.push('<ul class="' + chart.id + '-legend">');
3247
3248		var data = chart.data;
3249		var datasets = data.datasets;
3250		var labels = data.labels;
3251
3252		if (datasets.length) {
3253			for (var i = 0; i < datasets[0].data.length; ++i) {
3254				text.push('<li><span style="background-color:' + datasets[0].backgroundColor[i] + '"></span>');
3255				if (labels[i]) {
3256					text.push(labels[i]);
3257				}
3258				text.push('</li>');
3259			}
3260		}
3261
3262		text.push('</ul>');
3263		return text.join('');
3264	},
3265	legend: {
3266		labels: {
3267			generateLabels: function(chart) {
3268				var data = chart.data;
3269				if (data.labels.length && data.datasets.length) {
3270					return data.labels.map(function(label, i) {
3271						var meta = chart.getDatasetMeta(0);
3272						var ds = data.datasets[0];
3273						var arc = meta.data[i];
3274						var custom = arc.custom || {};
3275						var valueAtIndexOrDefault = helpers.valueAtIndexOrDefault;
3276						var arcOpts = chart.options.elements.arc;
3277						var fill = custom.backgroundColor ? custom.backgroundColor : valueAtIndexOrDefault(ds.backgroundColor, i, arcOpts.backgroundColor);
3278						var stroke = custom.borderColor ? custom.borderColor : valueAtIndexOrDefault(ds.borderColor, i, arcOpts.borderColor);
3279						var bw = custom.borderWidth ? custom.borderWidth : valueAtIndexOrDefault(ds.borderWidth, i, arcOpts.borderWidth);
3280
3281						return {
3282							text: label,
3283							fillStyle: fill,
3284							strokeStyle: stroke,
3285							lineWidth: bw,
3286							hidden: isNaN(ds.data[i]) || meta.data[i].hidden,
3287
3288							// Extra data used for toggling the correct item
3289							index: i
3290						};
3291					});
3292				}
3293				return [];
3294			}
3295		},
3296
3297		onClick: function(e, legendItem) {
3298			var index = legendItem.index;
3299			var chart = this.chart;
3300			var i, ilen, meta;
3301
3302			for (i = 0, ilen = (chart.data.datasets || []).length; i < ilen; ++i) {
3303				meta = chart.getDatasetMeta(i);
3304				meta.data[index].hidden = !meta.data[index].hidden;
3305			}
3306
3307			chart.update();
3308		}
3309	},
3310
3311	// Need to override these to give a nice default
3312	tooltips: {
3313		callbacks: {
3314			title: function() {
3315				return '';
3316			},
3317			label: function(item, data) {
3318				return data.labels[item.index] + ': ' + item.yLabel;
3319			}
3320		}
3321	}
3322});
3323
3324module.exports = function(Chart) {
3325
3326	Chart.controllers.polarArea = Chart.DatasetController.extend({
3327
3328		dataElementType: elements.Arc,
3329
3330		linkScales: helpers.noop,
3331
3332		update: function(reset) {
3333			var me = this;
3334			var chart = me.chart;
3335			var chartArea = chart.chartArea;
3336			var meta = me.getMeta();
3337			var opts = chart.options;
3338			var arcOpts = opts.elements.arc;
3339			var minSize = Math.min(chartArea.right - chartArea.left, chartArea.bottom - chartArea.top);
3340			chart.outerRadius = Math.max((minSize - arcOpts.borderWidth / 2) / 2, 0);
3341			chart.innerRadius = Math.max(opts.cutoutPercentage ? (chart.outerRadius / 100) * (opts.cutoutPercentage) : 1, 0);
3342			chart.radiusLength = (chart.outerRadius - chart.innerRadius) / chart.getVisibleDatasetCount();
3343
3344			me.outerRadius = chart.outerRadius - (chart.radiusLength * me.index);
3345			me.innerRadius = me.outerRadius - chart.radiusLength;
3346
3347			meta.count = me.countVisibleElements();
3348
3349			helpers.each(meta.data, function(arc, index) {
3350				me.updateElement(arc, index, reset);
3351			});
3352		},
3353
3354		updateElement: function(arc, index, reset) {
3355			var me = this;
3356			var chart = me.chart;
3357			var dataset = me.getDataset();
3358			var opts = chart.options;
3359			var animationOpts = opts.animation;
3360			var scale = chart.scale;
3361			var labels = chart.data.labels;
3362
3363			var circumference = me.calculateCircumference(dataset.data[index]);
3364			var centerX = scale.xCenter;
3365			var centerY = scale.yCenter;
3366
3367			// If there is NaN data before us, we need to calculate the starting angle correctly.
3368			// We could be way more efficient here, but its unlikely that the polar area chart will have a lot of data
3369			var visibleCount = 0;
3370			var meta = me.getMeta();
3371			for (var i = 0; i < index; ++i) {
3372				if (!isNaN(dataset.data[i]) && !meta.data[i].hidden) {
3373					++visibleCount;
3374				}
3375			}
3376
3377			// var negHalfPI = -0.5 * Math.PI;
3378			var datasetStartAngle = opts.startAngle;
3379			var distance = arc.hidden ? 0 : scale.getDistanceFromCenterForValue(dataset.data[index]);
3380			var startAngle = datasetStartAngle + (circumference * visibleCount);
3381			var endAngle = startAngle + (arc.hidden ? 0 : circumference);
3382
3383			var resetRadius = animationOpts.animateScale ? 0 : scale.getDistanceFromCenterForValue(dataset.data[index]);
3384
3385			helpers.extend(arc, {
3386				// Utility
3387				_datasetIndex: me.index,
3388				_index: index,
3389				_scale: scale,
3390
3391				// Desired view properties
3392				_model: {
3393					x: centerX,
3394					y: centerY,
3395					innerRadius: 0,
3396					outerRadius: reset ? resetRadius : distance,
3397					startAngle: reset && animationOpts.animateRotate ? datasetStartAngle : startAngle,
3398					endAngle: reset && animationOpts.animateRotate ? datasetStartAngle : endAngle,
3399					label: helpers.valueAtIndexOrDefault(labels, index, labels[index])
3400				}
3401			});
3402
3403			// Apply border and fill style
3404			me.removeHoverStyle(arc);
3405
3406			arc.pivot();
3407		},
3408
3409		removeHoverStyle: function(arc) {
3410			Chart.DatasetController.prototype.removeHoverStyle.call(this, arc, this.chart.options.elements.arc);
3411		},
3412
3413		countVisibleElements: function() {
3414			var dataset = this.getDataset();
3415			var meta = this.getMeta();
3416			var count = 0;
3417
3418			helpers.each(meta.data, function(element, index) {
3419				if (!isNaN(dataset.data[index]) && !element.hidden) {
3420					count++;
3421				}
3422			});
3423
3424			return count;
3425		},
3426
3427		calculateCircumference: function(value) {
3428			var count = this.getMeta().count;
3429			if (count > 0 && !isNaN(value)) {
3430				return (2 * Math.PI) / count;
3431			}
3432			return 0;
3433		}
3434	});
3435};
3436
3437},{"26":26,"41":41,"46":46}],20:[function(require,module,exports){
3438'use strict';
3439
3440var defaults = require(26);
3441var elements = require(41);
3442var helpers = require(46);
3443
3444defaults._set('radar', {
3445	scale: {
3446		type: 'radialLinear'
3447	},
3448	elements: {
3449		line: {
3450			tension: 0 // no bezier in radar
3451		}
3452	}
3453});
3454
3455module.exports = function(Chart) {
3456
3457	Chart.controllers.radar = Chart.DatasetController.extend({
3458
3459		datasetElementType: elements.Line,
3460
3461		dataElementType: elements.Point,
3462
3463		linkScales: helpers.noop,
3464
3465		update: function(reset) {
3466			var me = this;
3467			var meta = me.getMeta();
3468			var line = meta.dataset;
3469			var points = meta.data;
3470			var custom = line.custom || {};
3471			var dataset = me.getDataset();
3472			var lineElementOptions = me.chart.options.elements.line;
3473			var scale = me.chart.scale;
3474
3475			// Compatibility: If the properties are defined with only the old name, use those values
3476			if ((dataset.tension !== undefined) && (dataset.lineTension === undefined)) {
3477				dataset.lineTension = dataset.tension;
3478			}
3479
3480			helpers.extend(meta.dataset, {
3481				// Utility
3482				_datasetIndex: me.index,
3483				_scale: scale,
3484				// Data
3485				_children: points,
3486				_loop: true,
3487				// Model
3488				_model: {
3489					// Appearance
3490					tension: custom.tension ? custom.tension : helpers.valueOrDefault(dataset.lineTension, lineElementOptions.tension),
3491					backgroundColor: custom.backgroundColor ? custom.backgroundColor : (dataset.backgroundColor || lineElementOptions.backgroundColor),
3492					borderWidth: custom.borderWidth ? custom.borderWidth : (dataset.borderWidth || lineElementOptions.borderWidth),
3493					borderColor: custom.borderColor ? custom.borderColor : (dataset.borderColor || lineElementOptions.borderColor),
3494					fill: custom.fill ? custom.fill : (dataset.fill !== undefined ? dataset.fill : lineElementOptions.fill),
3495					borderCapStyle: custom.borderCapStyle ? custom.borderCapStyle : (dataset.borderCapStyle || lineElementOptions.borderCapStyle),
3496					borderDash: custom.borderDash ? custom.borderDash : (dataset.borderDash || lineElementOptions.borderDash),
3497					borderDashOffset: custom.borderDashOffset ? custom.borderDashOffset : (dataset.borderDashOffset || lineElementOptions.borderDashOffset),
3498					borderJoinStyle: custom.borderJoinStyle ? custom.borderJoinStyle : (dataset.borderJoinStyle || lineElementOptions.borderJoinStyle),
3499				}
3500			});
3501
3502			meta.dataset.pivot();
3503
3504			// Update Points
3505			helpers.each(points, function(point, index) {
3506				me.updateElement(point, index, reset);
3507			}, me);
3508
3509			// Update bezier control points
3510			me.updateBezierControlPoints();
3511		},
3512		updateElement: function(point, index, reset) {
3513			var me = this;
3514			var custom = point.custom || {};
3515			var dataset = me.getDataset();
3516			var scale = me.chart.scale;
3517			var pointElementOptions = me.chart.options.elements.point;
3518			var pointPosition = scale.getPointPositionForValue(index, dataset.data[index]);
3519
3520			// Compatibility: If the properties are defined with only the old name, use those values
3521			if ((dataset.radius !== undefined) && (dataset.pointRadius === undefined)) {
3522				dataset.pointRadius = dataset.radius;
3523			}
3524			if ((dataset.hitRadius !== undefined) && (dataset.pointHitRadius === undefined)) {
3525				dataset.pointHitRadius = dataset.hitRadius;
3526			}
3527
3528			helpers.extend(point, {
3529				// Utility
3530				_datasetIndex: me.index,
3531				_index: index,
3532				_scale: scale,
3533
3534				// Desired view properties
3535				_model: {
3536					x: reset ? scale.xCenter : pointPosition.x, // value not used in dataset scale, but we want a consistent API between scales
3537					y: reset ? scale.yCenter : pointPosition.y,
3538
3539					// Appearance
3540					tension: custom.tension ? custom.tension : helpers.valueOrDefault(dataset.lineTension, me.chart.options.elements.line.tension),
3541					radius: custom.radius ? custom.radius : helpers.valueAtIndexOrDefault(dataset.pointRadius, index, pointElementOptions.radius),
3542					backgroundColor: custom.backgroundColor ? custom.backgroundColor : helpers.valueAtIndexOrDefault(dataset.pointBackgroundColor, index, pointElementOptions.backgroundColor),
3543					borderColor: custom.borderColor ? custom.borderColor : helpers.valueAtIndexOrDefault(dataset.pointBorderColor, index, pointElementOptions.borderColor),
3544					borderWidth: custom.borderWidth ? custom.borderWidth : helpers.valueAtIndexOrDefault(dataset.pointBorderWidth, index, pointElementOptions.borderWidth),
3545					pointStyle: custom.pointStyle ? custom.pointStyle : helpers.valueAtIndexOrDefault(dataset.pointStyle, index, pointElementOptions.pointStyle),
3546
3547					// Tooltip
3548					hitRadius: custom.hitRadius ? custom.hitRadius : helpers.valueAtIndexOrDefault(dataset.pointHitRadius, index, pointElementOptions.hitRadius)
3549				}
3550			});
3551
3552			point._model.skip = custom.skip ? custom.skip : (isNaN(point._model.x) || isNaN(point._model.y));
3553		},
3554		updateBezierControlPoints: function() {
3555			var chartArea = this.chart.chartArea;
3556			var meta = this.getMeta();
3557
3558			helpers.each(meta.data, function(point, index) {
3559				var model = point._model;
3560				var controlPoints = helpers.splineCurve(
3561					helpers.previousItem(meta.data, index, true)._model,
3562					model,
3563					helpers.nextItem(meta.data, index, true)._model,
3564					model.tension
3565				);
3566
3567				// Prevent the bezier going outside of the bounds of the graph
3568				model.controlPointPreviousX = Math.max(Math.min(controlPoints.previous.x, chartArea.right), chartArea.left);
3569				model.controlPointPreviousY = Math.max(Math.min(controlPoints.previous.y, chartArea.bottom), chartArea.top);
3570
3571				model.controlPointNextX = Math.max(Math.min(controlPoints.next.x, chartArea.right), chartArea.left);
3572				model.controlPointNextY = Math.max(Math.min(controlPoints.next.y, chartArea.bottom), chartArea.top);
3573
3574				// Now pivot the point for animation
3575				point.pivot();
3576			});
3577		},
3578
3579		setHoverStyle: function(point) {
3580			// Point
3581			var dataset = this.chart.data.datasets[point._datasetIndex];
3582			var custom = point.custom || {};
3583			var index = point._index;
3584			var model = point._model;
3585
3586			model.radius = custom.hoverRadius ? custom.hoverRadius : helpers.valueAtIndexOrDefault(dataset.pointHoverRadius, index, this.chart.options.elements.point.hoverRadius);
3587			model.backgroundColor = custom.hoverBackgroundColor ? custom.hoverBackgroundColor : helpers.valueAtIndexOrDefault(dataset.pointHoverBackgroundColor, index, helpers.getHoverColor(model.backgroundColor));
3588			model.borderColor = custom.hoverBorderColor ? custom.hoverBorderColor : helpers.valueAtIndexOrDefault(dataset.pointHoverBorderColor, index, helpers.getHoverColor(model.borderColor));
3589			model.borderWidth = custom.hoverBorderWidth ? custom.hoverBorderWidth : helpers.valueAtIndexOrDefault(dataset.pointHoverBorderWidth, index, model.borderWidth);
3590		},
3591
3592		removeHoverStyle: function(point) {
3593			var dataset = this.chart.data.datasets[point._datasetIndex];
3594			var custom = point.custom || {};
3595			var index = point._index;
3596			var model = point._model;
3597			var pointElementOptions = this.chart.options.elements.point;
3598
3599			model.radius = custom.radius ? custom.radius : helpers.valueAtIndexOrDefault(dataset.pointRadius, index, pointElementOptions.radius);
3600			model.backgroundColor = custom.backgroundColor ? custom.backgroundColor : helpers.valueAtIndexOrDefault(dataset.pointBackgroundColor, index, pointElementOptions.backgroundColor);
3601			model.borderColor = custom.borderColor ? custom.borderColor : helpers.valueAtIndexOrDefault(dataset.pointBorderColor, index, pointElementOptions.borderColor);
3602			model.borderWidth = custom.borderWidth ? custom.borderWidth : helpers.valueAtIndexOrDefault(dataset.pointBorderWidth, index, pointElementOptions.borderWidth);
3603		}
3604	});
3605};
3606
3607},{"26":26,"41":41,"46":46}],21:[function(require,module,exports){
3608'use strict';
3609
3610var defaults = require(26);
3611
3612defaults._set('scatter', {
3613	hover: {
3614		mode: 'single'
3615	},
3616
3617	scales: {
3618		xAxes: [{
3619			id: 'x-axis-1',    // need an ID so datasets can reference the scale
3620			type: 'linear',    // scatter should not use a category axis
3621			position: 'bottom'
3622		}],
3623		yAxes: [{
3624			id: 'y-axis-1',
3625			type: 'linear',
3626			position: 'left'
3627		}]
3628	},
3629
3630	showLines: false,
3631
3632	tooltips: {
3633		callbacks: {
3634			title: function() {
3635				return '';     // doesn't make sense for scatter since data are formatted as a point
3636			},
3637			label: function(item) {
3638				return '(' + item.xLabel + ', ' + item.yLabel + ')';
3639			}
3640		}
3641	}
3642});
3643
3644module.exports = function(Chart) {
3645
3646	// Scatter charts use line controllers
3647	Chart.controllers.scatter = Chart.controllers.line;
3648
3649};
3650
3651},{"26":26}],22:[function(require,module,exports){
3652'use strict';
3653
3654var Element = require(27);
3655
3656var exports = module.exports = Element.extend({
3657	chart: null, // the animation associated chart instance
3658	currentStep: 0, // the current animation step
3659	numSteps: 60, // default number of steps
3660	easing: '', // the easing to use for this animation
3661	render: null, // render function used by the animation service
3662
3663	onAnimationProgress: null, // user specified callback to fire on each step of the animation
3664	onAnimationComplete: null, // user specified callback to fire when the animation finishes
3665});
3666
3667// DEPRECATIONS
3668
3669/**
3670 * Provided for backward compatibility, use Chart.Animation instead
3671 * @prop Chart.Animation#animationObject
3672 * @deprecated since version 2.6.0
3673 * @todo remove at version 3
3674 */
3675Object.defineProperty(exports.prototype, 'animationObject', {
3676	get: function() {
3677		return this;
3678	}
3679});
3680
3681/**
3682 * Provided for backward compatibility, use Chart.Animation#chart instead
3683 * @prop Chart.Animation#chartInstance
3684 * @deprecated since version 2.6.0
3685 * @todo remove at version 3
3686 */
3687Object.defineProperty(exports.prototype, 'chartInstance', {
3688	get: function() {
3689		return this.chart;
3690	},
3691	set: function(value) {
3692		this.chart = value;
3693	}
3694});
3695
3696},{"27":27}],23:[function(require,module,exports){
3697/* global window: false */
3698'use strict';
3699
3700var defaults = require(26);
3701var helpers = require(46);
3702
3703defaults._set('global', {
3704	animation: {
3705		duration: 1000,
3706		easing: 'easeOutQuart',
3707		onProgress: helpers.noop,
3708		onComplete: helpers.noop
3709	}
3710});
3711
3712module.exports = {
3713	frameDuration: 17,
3714	animations: [],
3715	dropFrames: 0,
3716	request: null,
3717
3718	/**
3719	 * @param {Chart} chart - The chart to animate.
3720	 * @param {Chart.Animation} animation - The animation that we will animate.
3721	 * @param {Number} duration - The animation duration in ms.
3722	 * @param {Boolean} lazy - if true, the chart is not marked as animating to enable more responsive interactions
3723	 */
3724	addAnimation: function(chart, animation, duration, lazy) {
3725		var animations = this.animations;
3726		var i, ilen;
3727
3728		animation.chart = chart;
3729
3730		if (!lazy) {
3731			chart.animating = true;
3732		}
3733
3734		for (i = 0, ilen = animations.length; i < ilen; ++i) {
3735			if (animations[i].chart === chart) {
3736				animations[i] = animation;
3737				return;
3738			}
3739		}
3740
3741		animations.push(animation);
3742
3743		// If there are no animations queued, manually kickstart a digest, for lack of a better word
3744		if (animations.length === 1) {
3745			this.requestAnimationFrame();
3746		}
3747	},
3748
3749	cancelAnimation: function(chart) {
3750		var index = helpers.findIndex(this.animations, function(animation) {
3751			return animation.chart === chart;
3752		});
3753
3754		if (index !== -1) {
3755			this.animations.splice(index, 1);
3756			chart.animating = false;
3757		}
3758	},
3759
3760	requestAnimationFrame: function() {
3761		var me = this;
3762		if (me.request === null) {
3763			// Skip animation frame requests until the active one is executed.
3764			// This can happen when processing mouse events, e.g. 'mousemove'
3765			// and 'mouseout' events will trigger multiple renders.
3766			me.request = helpers.requestAnimFrame.call(window, function() {
3767				me.request = null;
3768				me.startDigest();
3769			});
3770		}
3771	},
3772
3773	/**
3774	 * @private
3775	 */
3776	startDigest: function() {
3777		var me = this;
3778		var startTime = Date.now();
3779		var framesToDrop = 0;
3780
3781		if (me.dropFrames > 1) {
3782			framesToDrop = Math.floor(me.dropFrames);
3783			me.dropFrames = me.dropFrames % 1;
3784		}
3785
3786		me.advance(1 + framesToDrop);
3787
3788		var endTime = Date.now();
3789
3790		me.dropFrames += (endTime - startTime) / me.frameDuration;
3791
3792		// Do we have more stuff to animate?
3793		if (me.animations.length > 0) {
3794			me.requestAnimationFrame();
3795		}
3796	},
3797
3798	/**
3799	 * @private
3800	 */
3801	advance: function(count) {
3802		var animations = this.animations;
3803		var animation, chart;
3804		var i = 0;
3805
3806		while (i < animations.length) {
3807			animation = animations[i];
3808			chart = animation.chart;
3809
3810			animation.currentStep = (animation.currentStep || 0) + count;
3811			animation.currentStep = Math.min(animation.currentStep, animation.numSteps);
3812
3813			helpers.callback(animation.render, [chart, animation], chart);
3814			helpers.callback(animation.onAnimationProgress, [animation], chart);
3815
3816			if (animation.currentStep >= animation.numSteps) {
3817				helpers.callback(animation.onAnimationComplete, [animation], chart);
3818				chart.animating = false;
3819				animations.splice(i, 1);
3820			} else {
3821				++i;
3822			}
3823		}
3824	}
3825};
3826
3827},{"26":26,"46":46}],24:[function(require,module,exports){
3828'use strict';
3829
3830var Animation = require(22);
3831var animations = require(23);
3832var defaults = require(26);
3833var helpers = require(46);
3834var Interaction = require(29);
3835var layouts = require(31);
3836var platform = require(49);
3837var plugins = require(32);
3838var scaleService = require(34);
3839var Tooltip = require(36);
3840
3841module.exports = function(Chart) {
3842
3843	// Create a dictionary of chart types, to allow for extension of existing types
3844	Chart.types = {};
3845
3846	// Store a reference to each instance - allowing us to globally resize chart instances on window resize.
3847	// Destroy method on the chart will remove the instance of the chart from this reference.
3848	Chart.instances = {};
3849
3850	// Controllers available for dataset visualization eg. bar, line, slice, etc.
3851	Chart.controllers = {};
3852
3853	/**
3854	 * Initializes the given config with global and chart default values.
3855	 */
3856	function initConfig(config) {
3857		config = config || {};
3858
3859		// Do NOT use configMerge() for the data object because this method merges arrays
3860		// and so would change references to labels and datasets, preventing data updates.
3861		var data = config.data = config.data || {};
3862		data.datasets = data.datasets || [];
3863		data.labels = data.labels || [];
3864
3865		config.options = helpers.configMerge(
3866			defaults.global,
3867			defaults[config.type],
3868			config.options || {});
3869
3870		return config;
3871	}
3872
3873	/**
3874	 * Updates the config of the chart
3875	 * @param chart {Chart} chart to update the options for
3876	 */
3877	function updateConfig(chart) {
3878		var newOptions = chart.options;
3879
3880		helpers.each(chart.scales, function(scale) {
3881			layouts.removeBox(chart, scale);
3882		});
3883
3884		newOptions = helpers.configMerge(
3885			Chart.defaults.global,
3886			Chart.defaults[chart.config.type],
3887			newOptions);
3888
3889		chart.options = chart.config.options = newOptions;
3890		chart.ensureScalesHaveIDs();
3891		chart.buildOrUpdateScales();
3892		// Tooltip
3893		chart.tooltip._options = newOptions.tooltips;
3894		chart.tooltip.initialize();
3895	}
3896
3897	function positionIsHorizontal(position) {
3898		return position === 'top' || position === 'bottom';
3899	}
3900
3901	helpers.extend(Chart.prototype, /** @lends Chart */ {
3902		/**
3903		 * @private
3904		 */
3905		construct: function(item, config) {
3906			var me = this;
3907
3908			config = initConfig(config);
3909
3910			var context = platform.acquireContext(item, config);
3911			var canvas = context && context.canvas;
3912			var height = canvas && canvas.height;
3913			var width = canvas && canvas.width;
3914
3915			me.id = helpers.uid();
3916			me.ctx = context;
3917			me.canvas = canvas;
3918			me.config = config;
3919			me.width = width;
3920			me.height = height;
3921			me.aspectRatio = height ? width / height : null;
3922			me.options = config.options;
3923			me._bufferedRender = false;
3924
3925			/**
3926			 * Provided for backward compatibility, Chart and Chart.Controller have been merged,
3927			 * the "instance" still need to be defined since it might be called from plugins.
3928			 * @prop Chart#chart
3929			 * @deprecated since version 2.6.0
3930			 * @todo remove at version 3
3931			 * @private
3932			 */
3933			me.chart = me;
3934			me.controller = me; // chart.chart.controller #inception
3935
3936			// Add the chart instance to the global namespace
3937			Chart.instances[me.id] = me;
3938
3939			// Define alias to the config data: `chart.data === chart.config.data`
3940			Object.defineProperty(me, 'data', {
3941				get: function() {
3942					return me.config.data;
3943				},
3944				set: function(value) {
3945					me.config.data = value;
3946				}
3947			});
3948
3949			if (!context || !canvas) {
3950				// The given item is not a compatible context2d element, let's return before finalizing
3951				// the chart initialization but after setting basic chart / controller properties that
3952				// can help to figure out that the chart is not valid (e.g chart.canvas !== null);
3953				// https://github.com/chartjs/Chart.js/issues/2807
3954				console.error("Failed to create chart: can't acquire context from the given item");
3955				return;
3956			}
3957
3958			me.initialize();
3959			me.update();
3960		},
3961
3962		/**
3963		 * @private
3964		 */
3965		initialize: function() {
3966			var me = this;
3967
3968			// Before init plugin notification
3969			plugins.notify(me, 'beforeInit');
3970
3971			helpers.retinaScale(me, me.options.devicePixelRatio);
3972
3973			me.bindEvents();
3974
3975			if (me.options.responsive) {
3976				// Initial resize before chart draws (must be silent to preserve initial animations).
3977				me.resize(true);
3978			}
3979
3980			// Make sure scales have IDs and are built before we build any controllers.
3981			me.ensureScalesHaveIDs();
3982			me.buildOrUpdateScales();
3983			me.initToolTip();
3984
3985			// After init plugin notification
3986			plugins.notify(me, 'afterInit');
3987
3988			return me;
3989		},
3990
3991		clear: function() {
3992			helpers.canvas.clear(this);
3993			return this;
3994		},
3995
3996		stop: function() {
3997			// Stops any current animation loop occurring
3998			animations.cancelAnimation(this);
3999			return this;
4000		},
4001
4002		resize: function(silent) {
4003			var me = this;
4004			var options = me.options;
4005			var canvas = me.canvas;
4006			var aspectRatio = (options.maintainAspectRatio && me.aspectRatio) || null;
4007
4008			// the canvas render width and height will be casted to integers so make sure that
4009			// the canvas display style uses the same integer values to avoid blurring effect.
4010
4011			// Set to 0 instead of canvas.size because the size defaults to 300x150 if the element is collased
4012			var newWidth = Math.max(0, Math.floor(helpers.getMaximumWidth(canvas)));
4013			var newHeight = Math.max(0, Math.floor(aspectRatio ? newWidth / aspectRatio : helpers.getMaximumHeight(canvas)));
4014
4015			if (me.width === newWidth && me.height === newHeight) {
4016				return;
4017			}
4018
4019			canvas.width = me.width = newWidth;
4020			canvas.height = me.height = newHeight;
4021			canvas.style.width = newWidth + 'px';
4022			canvas.style.height = newHeight + 'px';
4023
4024			helpers.retinaScale(me, options.devicePixelRatio);
4025
4026			if (!silent) {
4027				// Notify any plugins about the resize
4028				var newSize = {width: newWidth, height: newHeight};
4029				plugins.notify(me, 'resize', [newSize]);
4030
4031				// Notify of resize
4032				if (me.options.onResize) {
4033					me.options.onResize(me, newSize);
4034				}
4035
4036				me.stop();
4037				me.update(me.options.responsiveAnimationDuration);
4038			}
4039		},
4040
4041		ensureScalesHaveIDs: function() {
4042			var options = this.options;
4043			var scalesOptions = options.scales || {};
4044			var scaleOptions = options.scale;
4045
4046			helpers.each(scalesOptions.xAxes, function(xAxisOptions, index) {
4047				xAxisOptions.id = xAxisOptions.id || ('x-axis-' + index);
4048			});
4049
4050			helpers.each(scalesOptions.yAxes, function(yAxisOptions, index) {
4051				yAxisOptions.id = yAxisOptions.id || ('y-axis-' + index);
4052			});
4053
4054			if (scaleOptions) {
4055				scaleOptions.id = scaleOptions.id || 'scale';
4056			}
4057		},
4058
4059		/**
4060		 * Builds a map of scale ID to scale object for future lookup.
4061		 */
4062		buildOrUpdateScales: function() {
4063			var me = this;
4064			var options = me.options;
4065			var scales = me.scales || {};
4066			var items = [];
4067			var updated = Object.keys(scales).reduce(function(obj, id) {
4068				obj[id] = false;
4069				return obj;
4070			}, {});
4071
4072			if (options.scales) {
4073				items = items.concat(
4074					(options.scales.xAxes || []).map(function(xAxisOptions) {
4075						return {options: xAxisOptions, dtype: 'category', dposition: 'bottom'};
4076					}),
4077					(options.scales.yAxes || []).map(function(yAxisOptions) {
4078						return {options: yAxisOptions, dtype: 'linear', dposition: 'left'};
4079					})
4080				);
4081			}
4082
4083			if (options.scale) {
4084				items.push({
4085					options: options.scale,
4086					dtype: 'radialLinear',
4087					isDefault: true,
4088					dposition: 'chartArea'
4089				});
4090			}
4091
4092			helpers.each(items, function(item) {
4093				var scaleOptions = item.options;
4094				var id = scaleOptions.id;
4095				var scaleType = helpers.valueOrDefault(scaleOptions.type, item.dtype);
4096
4097				if (positionIsHorizontal(scaleOptions.position) !== positionIsHorizontal(item.dposition)) {
4098					scaleOptions.position = item.dposition;
4099				}
4100
4101				updated[id] = true;
4102				var scale = null;
4103				if (id in scales && scales[id].type === scaleType) {
4104					scale = scales[id];
4105					scale.options = scaleOptions;
4106					scale.ctx = me.ctx;
4107					scale.chart = me;
4108				} else {
4109					var scaleClass = scaleService.getScaleConstructor(scaleType);
4110					if (!scaleClass) {
4111						return;
4112					}
4113					scale = new scaleClass({
4114						id: id,
4115						type: scaleType,
4116						options: scaleOptions,
4117						ctx: me.ctx,
4118						chart: me
4119					});
4120					scales[scale.id] = scale;
4121				}
4122
4123				scale.mergeTicksOptions();
4124
4125				// TODO(SB): I think we should be able to remove this custom case (options.scale)
4126				// and consider it as a regular scale part of the "scales"" map only! This would
4127				// make the logic easier and remove some useless? custom code.
4128				if (item.isDefault) {
4129					me.scale = scale;
4130				}
4131			});
4132			// clear up discarded scales
4133			helpers.each(updated, function(hasUpdated, id) {
4134				if (!hasUpdated) {
4135					delete scales[id];
4136				}
4137			});
4138
4139			me.scales = scales;
4140
4141			scaleService.addScalesToLayout(this);
4142		},
4143
4144		buildOrUpdateControllers: function() {
4145			var me = this;
4146			var types = [];
4147			var newControllers = [];
4148
4149			helpers.each(me.data.datasets, function(dataset, datasetIndex) {
4150				var meta = me.getDatasetMeta(datasetIndex);
4151				var type = dataset.type || me.config.type;
4152
4153				if (meta.type && meta.type !== type) {
4154					me.destroyDatasetMeta(datasetIndex);
4155					meta = me.getDatasetMeta(datasetIndex);
4156				}
4157				meta.type = type;
4158
4159				types.push(meta.type);
4160
4161				if (meta.controller) {
4162					meta.controller.updateIndex(datasetIndex);
4163					meta.controller.linkScales();
4164				} else {
4165					var ControllerClass = Chart.controllers[meta.type];
4166					if (ControllerClass === undefined) {
4167						throw new Error('"' + meta.type + '" is not a chart type.');
4168					}
4169
4170					meta.controller = new ControllerClass(me, datasetIndex);
4171					newControllers.push(meta.controller);
4172				}
4173			}, me);
4174
4175			return newControllers;
4176		},
4177
4178		/**
4179		 * Reset the elements of all datasets
4180		 * @private
4181		 */
4182		resetElements: function() {
4183			var me = this;
4184			helpers.each(me.data.datasets, function(dataset, datasetIndex) {
4185				me.getDatasetMeta(datasetIndex).controller.reset();
4186			}, me);
4187		},
4188
4189		/**
4190		* Resets the chart back to it's state before the initial animation
4191		*/
4192		reset: function() {
4193			this.resetElements();
4194			this.tooltip.initialize();
4195		},
4196
4197		update: function(config) {
4198			var me = this;
4199
4200			if (!config || typeof config !== 'object') {
4201				// backwards compatibility
4202				config = {
4203					duration: config,
4204					lazy: arguments[1]
4205				};
4206			}
4207
4208			updateConfig(me);
4209
4210			// plugins options references might have change, let's invalidate the cache
4211			// https://github.com/chartjs/Chart.js/issues/5111#issuecomment-355934167
4212			plugins._invalidate(me);
4213
4214			if (plugins.notify(me, 'beforeUpdate') === false) {
4215				return;
4216			}
4217
4218			// In case the entire data object changed
4219			me.tooltip._data = me.data;
4220
4221			// Make sure dataset controllers are updated and new controllers are reset
4222			var newControllers = me.buildOrUpdateControllers();
4223
4224			// Make sure all dataset controllers have correct meta data counts
4225			helpers.each(me.data.datasets, function(dataset, datasetIndex) {
4226				me.getDatasetMeta(datasetIndex).controller.buildOrUpdateElements();
4227			}, me);
4228
4229			me.updateLayout();
4230
4231			// Can only reset the new controllers after the scales have been updated
4232			if (me.options.animation && me.options.animation.duration) {
4233				helpers.each(newControllers, function(controller) {
4234					controller.reset();
4235				});
4236			}
4237
4238			me.updateDatasets();
4239
4240			// Need to reset tooltip in case it is displayed with elements that are removed
4241			// after update.
4242			me.tooltip.initialize();
4243
4244			// Last active contains items that were previously in the tooltip.
4245			// When we reset the tooltip, we need to clear it
4246			me.lastActive = [];
4247
4248			// Do this before render so that any plugins that need final scale updates can use it
4249			plugins.notify(me, 'afterUpdate');
4250
4251			if (me._bufferedRender) {
4252				me._bufferedRequest = {
4253					duration: config.duration,
4254					easing: config.easing,
4255					lazy: config.lazy
4256				};
4257			} else {
4258				me.render(config);
4259			}
4260		},
4261
4262		/**
4263		 * Updates the chart layout unless a plugin returns `false` to the `beforeLayout`
4264		 * hook, in which case, plugins will not be called on `afterLayout`.
4265		 * @private
4266		 */
4267		updateLayout: function() {
4268			var me = this;
4269
4270			if (plugins.notify(me, 'beforeLayout') === false) {
4271				return;
4272			}
4273
4274			layouts.update(this, this.width, this.height);
4275
4276			/**
4277			 * Provided for backward compatibility, use `afterLayout` instead.
4278			 * @method IPlugin#afterScaleUpdate
4279			 * @deprecated since version 2.5.0
4280			 * @todo remove at version 3
4281			 * @private
4282			 */
4283			plugins.notify(me, 'afterScaleUpdate');
4284			plugins.notify(me, 'afterLayout');
4285		},
4286
4287		/**
4288		 * Updates all datasets unless a plugin returns `false` to the `beforeDatasetsUpdate`
4289		 * hook, in which case, plugins will not be called on `afterDatasetsUpdate`.
4290		 * @private
4291		 */
4292		updateDatasets: function() {
4293			var me = this;
4294
4295			if (plugins.notify(me, 'beforeDatasetsUpdate') === false) {
4296				return;
4297			}
4298
4299			for (var i = 0, ilen = me.data.datasets.length; i < ilen; ++i) {
4300				me.updateDataset(i);
4301			}
4302
4303			plugins.notify(me, 'afterDatasetsUpdate');
4304		},
4305
4306		/**
4307		 * Updates dataset at index unless a plugin returns `false` to the `beforeDatasetUpdate`
4308		 * hook, in which case, plugins will not be called on `afterDatasetUpdate`.
4309		 * @private
4310		 */
4311		updateDataset: function(index) {
4312			var me = this;
4313			var meta = me.getDatasetMeta(index);
4314			var args = {
4315				meta: meta,
4316				index: index
4317			};
4318
4319			if (plugins.notify(me, 'beforeDatasetUpdate', [args]) === false) {
4320				return;
4321			}
4322
4323			meta.controller.update();
4324
4325			plugins.notify(me, 'afterDatasetUpdate', [args]);
4326		},
4327
4328		render: function(config) {
4329			var me = this;
4330
4331			if (!config || typeof config !== 'object') {
4332				// backwards compatibility
4333				config = {
4334					duration: config,
4335					lazy: arguments[1]
4336				};
4337			}
4338
4339			var duration = config.duration;
4340			var lazy = config.lazy;
4341
4342			if (plugins.notify(me, 'beforeRender') === false) {
4343				return;
4344			}
4345
4346			var animationOptions = me.options.animation;
4347			var onComplete = function(animation) {
4348				plugins.notify(me, 'afterRender');
4349				helpers.callback(animationOptions && animationOptions.onComplete, [animation], me);
4350			};
4351
4352			if (animationOptions && ((typeof duration !== 'undefined' && duration !== 0) || (typeof duration === 'undefined' && animationOptions.duration !== 0))) {
4353				var animation = new Animation({
4354					numSteps: (duration || animationOptions.duration) / 16.66, // 60 fps
4355					easing: config.easing || animationOptions.easing,
4356
4357					render: function(chart, animationObject) {
4358						var easingFunction = helpers.easing.effects[animationObject.easing];
4359						var currentStep = animationObject.currentStep;
4360						var stepDecimal = currentStep / animationObject.numSteps;
4361
4362						chart.draw(easingFunction(stepDecimal), stepDecimal, currentStep);
4363					},
4364
4365					onAnimationProgress: animationOptions.onProgress,
4366					onAnimationComplete: onComplete
4367				});
4368
4369				animations.addAnimation(me, animation, duration, lazy);
4370			} else {
4371				me.draw();
4372
4373				// See https://github.com/chartjs/Chart.js/issues/3781
4374				onComplete(new Animation({numSteps: 0, chart: me}));
4375			}
4376
4377			return me;
4378		},
4379
4380		draw: function(easingValue) {
4381			var me = this;
4382
4383			me.clear();
4384
4385			if (helpers.isNullOrUndef(easingValue)) {
4386				easingValue = 1;
4387			}
4388
4389			me.transition(easingValue);
4390
4391			if (plugins.notify(me, 'beforeDraw', [easingValue]) === false) {
4392				return;
4393			}
4394
4395			// Draw all the scales
4396			helpers.each(me.boxes, function(box) {
4397				box.draw(me.chartArea);
4398			}, me);
4399
4400			if (me.scale) {
4401				me.scale.draw();
4402			}
4403
4404			me.drawDatasets(easingValue);
4405			me._drawTooltip(easingValue);
4406
4407			plugins.notify(me, 'afterDraw', [easingValue]);
4408		},
4409
4410		/**
4411		 * @private
4412		 */
4413		transition: function(easingValue) {
4414			var me = this;
4415
4416			for (var i = 0, ilen = (me.data.datasets || []).length; i < ilen; ++i) {
4417				if (me.isDatasetVisible(i)) {
4418					me.getDatasetMeta(i).controller.transition(easingValue);
4419				}
4420			}
4421
4422			me.tooltip.transition(easingValue);
4423		},
4424
4425		/**
4426		 * Draws all datasets unless a plugin returns `false` to the `beforeDatasetsDraw`
4427		 * hook, in which case, plugins will not be called on `afterDatasetsDraw`.
4428		 * @private
4429		 */
4430		drawDatasets: function(easingValue) {
4431			var me = this;
4432
4433			if (plugins.notify(me, 'beforeDatasetsDraw', [easingValue]) === false) {
4434				return;
4435			}
4436
4437			// Draw datasets reversed to support proper line stacking
4438			for (var i = (me.data.datasets || []).length - 1; i >= 0; --i) {
4439				if (me.isDatasetVisible(i)) {
4440					me.drawDataset(i, easingValue);
4441				}
4442			}
4443
4444			plugins.notify(me, 'afterDatasetsDraw', [easingValue]);
4445		},
4446
4447		/**
4448		 * Draws dataset at index unless a plugin returns `false` to the `beforeDatasetDraw`
4449		 * hook, in which case, plugins will not be called on `afterDatasetDraw`.
4450		 * @private
4451		 */
4452		drawDataset: function(index, easingValue) {
4453			var me = this;
4454			var meta = me.getDatasetMeta(index);
4455			var args = {
4456				meta: meta,
4457				index: index,
4458				easingValue: easingValue
4459			};
4460
4461			if (plugins.notify(me, 'beforeDatasetDraw', [args]) === false) {
4462				return;
4463			}
4464
4465			meta.controller.draw(easingValue);
4466
4467			plugins.notify(me, 'afterDatasetDraw', [args]);
4468		},
4469
4470		/**
4471		 * Draws tooltip unless a plugin returns `false` to the `beforeTooltipDraw`
4472		 * hook, in which case, plugins will not be called on `afterTooltipDraw`.
4473		 * @private
4474		 */
4475		_drawTooltip: function(easingValue) {
4476			var me = this;
4477			var tooltip = me.tooltip;
4478			var args = {
4479				tooltip: tooltip,
4480				easingValue: easingValue
4481			};
4482
4483			if (plugins.notify(me, 'beforeTooltipDraw', [args]) === false) {
4484				return;
4485			}
4486
4487			tooltip.draw();
4488
4489			plugins.notify(me, 'afterTooltipDraw', [args]);
4490		},
4491
4492		// Get the single element that was clicked on
4493		// @return : An object containing the dataset index and element index of the matching element. Also contains the rectangle that was draw
4494		getElementAtEvent: function(e) {
4495			return Interaction.modes.single(this, e);
4496		},
4497
4498		getElementsAtEvent: function(e) {
4499			return Interaction.modes.label(this, e, {intersect: true});
4500		},
4501
4502		getElementsAtXAxis: function(e) {
4503			return Interaction.modes['x-axis'](this, e, {intersect: true});
4504		},
4505
4506		getElementsAtEventForMode: function(e, mode, options) {
4507			var method = Interaction.modes[mode];
4508			if (typeof method === 'function') {
4509				return method(this, e, options);
4510			}
4511
4512			return [];
4513		},
4514
4515		getDatasetAtEvent: function(e) {
4516			return Interaction.modes.dataset(this, e, {intersect: true});
4517		},
4518
4519		getDatasetMeta: function(datasetIndex) {
4520			var me = this;
4521			var dataset = me.data.datasets[datasetIndex];
4522			if (!dataset._meta) {
4523				dataset._meta = {};
4524			}
4525
4526			var meta = dataset._meta[me.id];
4527			if (!meta) {
4528				meta = dataset._meta[me.id] = {
4529					type: null,
4530					data: [],
4531					dataset: null,
4532					controller: null,
4533					hidden: null,			// See isDatasetVisible() comment
4534					xAxisID: null,
4535					yAxisID: null
4536				};
4537			}
4538
4539			return meta;
4540		},
4541
4542		getVisibleDatasetCount: function() {
4543			var count = 0;
4544			for (var i = 0, ilen = this.data.datasets.length; i < ilen; ++i) {
4545				if (this.isDatasetVisible(i)) {
4546					count++;
4547				}
4548			}
4549			return count;
4550		},
4551
4552		isDatasetVisible: function(datasetIndex) {
4553			var meta = this.getDatasetMeta(datasetIndex);
4554
4555			// meta.hidden is a per chart dataset hidden flag override with 3 states: if true or false,
4556			// the dataset.hidden value is ignored, else if null, the dataset hidden state is returned.
4557			return typeof meta.hidden === 'boolean' ? !meta.hidden : !this.data.datasets[datasetIndex].hidden;
4558		},
4559
4560		generateLegend: function() {
4561			return this.options.legendCallback(this);
4562		},
4563
4564		/**
4565		 * @private
4566		 */
4567		destroyDatasetMeta: function(datasetIndex) {
4568			var id = this.id;
4569			var dataset = this.data.datasets[datasetIndex];
4570			var meta = dataset._meta && dataset._meta[id];
4571
4572			if (meta) {
4573				meta.controller.destroy();
4574				delete dataset._meta[id];
4575			}
4576		},
4577
4578		destroy: function() {
4579			var me = this;
4580			var canvas = me.canvas;
4581			var i, ilen;
4582
4583			me.stop();
4584
4585			// dataset controllers need to cleanup associated data
4586			for (i = 0, ilen = me.data.datasets.length; i < ilen; ++i) {
4587				me.destroyDatasetMeta(i);
4588			}
4589
4590			if (canvas) {
4591				me.unbindEvents();
4592				helpers.canvas.clear(me);
4593				platform.releaseContext(me.ctx);
4594				me.canvas = null;
4595				me.ctx = null;
4596			}
4597
4598			plugins.notify(me, 'destroy');
4599
4600			delete Chart.instances[me.id];
4601		},
4602
4603		toBase64Image: function() {
4604			return this.canvas.toDataURL.apply(this.canvas, arguments);
4605		},
4606
4607		initToolTip: function() {
4608			var me = this;
4609			me.tooltip = new Tooltip({
4610				_chart: me,
4611				_chartInstance: me, // deprecated, backward compatibility
4612				_data: me.data,
4613				_options: me.options.tooltips
4614			}, me);
4615		},
4616
4617		/**
4618		 * @private
4619		 */
4620		bindEvents: function() {
4621			var me = this;
4622			var listeners = me._listeners = {};
4623			var listener = function() {
4624				me.eventHandler.apply(me, arguments);
4625			};
4626
4627			helpers.each(me.options.events, function(type) {
4628				platform.addEventListener(me, type, listener);
4629				listeners[type] = listener;
4630			});
4631
4632			// Elements used to detect size change should not be injected for non responsive charts.
4633			// See https://github.com/chartjs/Chart.js/issues/2210
4634			if (me.options.responsive) {
4635				listener = function() {
4636					me.resize();
4637				};
4638
4639				platform.addEventListener(me, 'resize', listener);
4640				listeners.resize = listener;
4641			}
4642		},
4643
4644		/**
4645		 * @private
4646		 */
4647		unbindEvents: function() {
4648			var me = this;
4649			var listeners = me._listeners;
4650			if (!listeners) {
4651				return;
4652			}
4653
4654			delete me._listeners;
4655			helpers.each(listeners, function(listener, type) {
4656				platform.removeEventListener(me, type, listener);
4657			});
4658		},
4659
4660		updateHoverStyle: function(elements, mode, enabled) {
4661			var method = enabled ? 'setHoverStyle' : 'removeHoverStyle';
4662			var element, i, ilen;
4663
4664			for (i = 0, ilen = elements.length; i < ilen; ++i) {
4665				element = elements[i];
4666				if (element) {
4667					this.getDatasetMeta(element._datasetIndex).controller[method](element);
4668				}
4669			}
4670		},
4671
4672		/**
4673		 * @private
4674		 */
4675		eventHandler: function(e) {
4676			var me = this;
4677			var tooltip = me.tooltip;
4678
4679			if (plugins.notify(me, 'beforeEvent', [e]) === false) {
4680				return;
4681			}
4682
4683			// Buffer any update calls so that renders do not occur
4684			me._bufferedRender = true;
4685			me._bufferedRequest = null;
4686
4687			var changed = me.handleEvent(e);
4688			// for smooth tooltip animations issue #4989
4689			// the tooltip should be the source of change
4690			// Animation check workaround:
4691			// tooltip._start will be null when tooltip isn't animating
4692			if (tooltip) {
4693				changed = tooltip._start
4694					? tooltip.handleEvent(e)
4695					: changed | tooltip.handleEvent(e);
4696			}
4697
4698			plugins.notify(me, 'afterEvent', [e]);
4699
4700			var bufferedRequest = me._bufferedRequest;
4701			if (bufferedRequest) {
4702				// If we have an update that was triggered, we need to do a normal render
4703				me.render(bufferedRequest);
4704			} else if (changed && !me.animating) {
4705				// If entering, leaving, or changing elements, animate the change via pivot
4706				me.stop();
4707
4708				// We only need to render at this point. Updating will cause scales to be
4709				// recomputed generating flicker & using more memory than necessary.
4710				me.render(me.options.hover.animationDuration, true);
4711			}
4712
4713			me._bufferedRender = false;
4714			me._bufferedRequest = null;
4715
4716			return me;
4717		},
4718
4719		/**
4720		 * Handle an event
4721		 * @private
4722		 * @param {IEvent} event the event to handle
4723		 * @return {Boolean} true if the chart needs to re-render
4724		 */
4725		handleEvent: function(e) {
4726			var me = this;
4727			var options = me.options || {};
4728			var hoverOptions = options.hover;
4729			var changed = false;
4730
4731			me.lastActive = me.lastActive || [];
4732
4733			// Find Active Elements for hover and tooltips
4734			if (e.type === 'mouseout') {
4735				me.active = [];
4736			} else {
4737				me.active = me.getElementsAtEventForMode(e, hoverOptions.mode, hoverOptions);
4738			}
4739
4740			// Invoke onHover hook
4741			// Need to call with native event here to not break backwards compatibility
4742			helpers.callback(options.onHover || options.hover.onHover, [e.native, me.active], me);
4743
4744			if (e.type === 'mouseup' || e.type === 'click') {
4745				if (options.onClick) {
4746					// Use e.native here for backwards compatibility
4747					options.onClick.call(me, e.native, me.active);
4748				}
4749			}
4750
4751			// Remove styling for last active (even if it may still be active)
4752			if (me.lastActive.length) {
4753				me.updateHoverStyle(me.lastActive, hoverOptions.mode, false);
4754			}
4755
4756			// Built in hover styling
4757			if (me.active.length && hoverOptions.mode) {
4758				me.updateHoverStyle(me.active, hoverOptions.mode, true);
4759			}
4760
4761			changed = !helpers.arrayEquals(me.active, me.lastActive);
4762
4763			// Remember Last Actives
4764			me.lastActive = me.active;
4765
4766			return changed;
4767		}
4768	});
4769
4770	/**
4771	 * Provided for backward compatibility, use Chart instead.
4772	 * @class Chart.Controller
4773	 * @deprecated since version 2.6.0
4774	 * @todo remove at version 3
4775	 * @private
4776	 */
4777	Chart.Controller = Chart;
4778};
4779
4780},{"22":22,"23":23,"26":26,"29":29,"31":31,"32":32,"34":34,"36":36,"46":46,"49":49}],25:[function(require,module,exports){
4781'use strict';
4782
4783var helpers = require(46);
4784
4785module.exports = function(Chart) {
4786
4787	var arrayEvents = ['push', 'pop', 'shift', 'splice', 'unshift'];
4788
4789	/**
4790	 * Hooks the array methods that add or remove values ('push', pop', 'shift', 'splice',
4791	 * 'unshift') and notify the listener AFTER the array has been altered. Listeners are
4792	 * called on the 'onData*' callbacks (e.g. onDataPush, etc.) with same arguments.
4793	 */
4794	function listenArrayEvents(array, listener) {
4795		if (array._chartjs) {
4796			array._chartjs.listeners.push(listener);
4797			return;
4798		}
4799
4800		Object.defineProperty(array, '_chartjs', {
4801			configurable: true,
4802			enumerable: false,
4803			value: {
4804				listeners: [listener]
4805			}
4806		});
4807
4808		arrayEvents.forEach(function(key) {
4809			var method = 'onData' + key.charAt(0).toUpperCase() + key.slice(1);
4810			var base = array[key];
4811
4812			Object.defineProperty(array, key, {
4813				configurable: true,
4814				enumerable: false,
4815				value: function() {
4816					var args = Array.prototype.slice.call(arguments);
4817					var res = base.apply(this, args);
4818
4819					helpers.each(array._chartjs.listeners, function(object) {
4820						if (typeof object[method] === 'function') {
4821							object[method].apply(object, args);
4822						}
4823					});
4824
4825					return res;
4826				}
4827			});
4828		});
4829	}
4830
4831	/**
4832	 * Removes the given array event listener and cleanup extra attached properties (such as
4833	 * the _chartjs stub and overridden methods) if array doesn't have any more listeners.
4834	 */
4835	function unlistenArrayEvents(array, listener) {
4836		var stub = array._chartjs;
4837		if (!stub) {
4838			return;
4839		}
4840
4841		var listeners = stub.listeners;
4842		var index = listeners.indexOf(listener);
4843		if (index !== -1) {
4844			listeners.splice(index, 1);
4845		}
4846
4847		if (listeners.length > 0) {
4848			return;
4849		}
4850
4851		arrayEvents.forEach(function(key) {
4852			delete array[key];
4853		});
4854
4855		delete array._chartjs;
4856	}
4857
4858	// Base class for all dataset controllers (line, bar, etc)
4859	Chart.DatasetController = function(chart, datasetIndex) {
4860		this.initialize(chart, datasetIndex);
4861	};
4862
4863	helpers.extend(Chart.DatasetController.prototype, {
4864
4865		/**
4866		 * Element type used to generate a meta dataset (e.g. Chart.element.Line).
4867		 * @type {Chart.core.element}
4868		 */
4869		datasetElementType: null,
4870
4871		/**
4872		 * Element type used to generate a meta data (e.g. Chart.element.Point).
4873		 * @type {Chart.core.element}
4874		 */
4875		dataElementType: null,
4876
4877		initialize: function(chart, datasetIndex) {
4878			var me = this;
4879			me.chart = chart;
4880			me.index = datasetIndex;
4881			me.linkScales();
4882			me.addElements();
4883		},
4884
4885		updateIndex: function(datasetIndex) {
4886			this.index = datasetIndex;
4887		},
4888
4889		linkScales: function() {
4890			var me = this;
4891			var meta = me.getMeta();
4892			var dataset = me.getDataset();
4893
4894			if (meta.xAxisID === null || !(meta.xAxisID in me.chart.scales)) {
4895				meta.xAxisID = dataset.xAxisID || me.chart.options.scales.xAxes[0].id;
4896			}
4897			if (meta.yAxisID === null || !(meta.yAxisID in me.chart.scales)) {
4898				meta.yAxisID = dataset.yAxisID || me.chart.options.scales.yAxes[0].id;
4899			}
4900		},
4901
4902		getDataset: function() {
4903			return this.chart.data.datasets[this.index];
4904		},
4905
4906		getMeta: function() {
4907			return this.chart.getDatasetMeta(this.index);
4908		},
4909
4910		getScaleForId: function(scaleID) {
4911			return this.chart.scales[scaleID];
4912		},
4913
4914		reset: function() {
4915			this.update(true);
4916		},
4917
4918		/**
4919		 * @private
4920		 */
4921		destroy: function() {
4922			if (this._data) {
4923				unlistenArrayEvents(this._data, this);
4924			}
4925		},
4926
4927		createMetaDataset: function() {
4928			var me = this;
4929			var type = me.datasetElementType;
4930			return type && new type({
4931				_chart: me.chart,
4932				_datasetIndex: me.index
4933			});
4934		},
4935
4936		createMetaData: function(index) {
4937			var me = this;
4938			var type = me.dataElementType;
4939			return type && new type({
4940				_chart: me.chart,
4941				_datasetIndex: me.index,
4942				_index: index
4943			});
4944		},
4945
4946		addElements: function() {
4947			var me = this;
4948			var meta = me.getMeta();
4949			var data = me.getDataset().data || [];
4950			var metaData = meta.data;
4951			var i, ilen;
4952
4953			for (i = 0, ilen = data.length; i < ilen; ++i) {
4954				metaData[i] = metaData[i] || me.createMetaData(i);
4955			}
4956
4957			meta.dataset = meta.dataset || me.createMetaDataset();
4958		},
4959
4960		addElementAndReset: function(index) {
4961			var element = this.createMetaData(index);
4962			this.getMeta().data.splice(index, 0, element);
4963			this.updateElement(element, index, true);
4964		},
4965
4966		buildOrUpdateElements: function() {
4967			var me = this;
4968			var dataset = me.getDataset();
4969			var data = dataset.data || (dataset.data = []);
4970
4971			// In order to correctly handle data addition/deletion animation (an thus simulate
4972			// real-time charts), we need to monitor these data modifications and synchronize
4973			// the internal meta data accordingly.
4974			if (me._data !== data) {
4975				if (me._data) {
4976					// This case happens when the user replaced the data array instance.
4977					unlistenArrayEvents(me._data, me);
4978				}
4979
4980				listenArrayEvents(data, me);
4981				me._data = data;
4982			}
4983
4984			// Re-sync meta data in case the user replaced the data array or if we missed
4985			// any updates and so make sure that we handle number of datapoints changing.
4986			me.resyncElements();
4987		},
4988
4989		update: helpers.noop,
4990
4991		transition: function(easingValue) {
4992			var meta = this.getMeta();
4993			var elements = meta.data || [];
4994			var ilen = elements.length;
4995			var i = 0;
4996
4997			for (; i < ilen; ++i) {
4998				elements[i].transition(easingValue);
4999			}
5000
5001			if (meta.dataset) {
5002				meta.dataset.transition(easingValue);
5003			}
5004		},
5005
5006		draw: function() {
5007			var meta = this.getMeta();
5008			var elements = meta.data || [];
5009			var ilen = elements.length;
5010			var i = 0;
5011
5012			if (meta.dataset) {
5013				meta.dataset.draw();
5014			}
5015
5016			for (; i < ilen; ++i) {
5017				elements[i].draw();
5018			}
5019		},
5020
5021		removeHoverStyle: function(element, elementOpts) {
5022			var dataset = this.chart.data.datasets[element._datasetIndex];
5023			var index = element._index;
5024			var custom = element.custom || {};
5025			var valueOrDefault = helpers.valueAtIndexOrDefault;
5026			var model = element._model;
5027
5028			model.backgroundColor = custom.backgroundColor ? custom.backgroundColor : valueOrDefault(dataset.backgroundColor, index, elementOpts.backgroundColor);
5029			model.borderColor = custom.borderColor ? custom.borderColor : valueOrDefault(dataset.borderColor, index, elementOpts.borderColor);
5030			model.borderWidth = custom.borderWidth ? custom.borderWidth : valueOrDefault(dataset.borderWidth, index, elementOpts.borderWidth);
5031		},
5032
5033		setHoverStyle: function(element) {
5034			var dataset = this.chart.data.datasets[element._datasetIndex];
5035			var index = element._index;
5036			var custom = element.custom || {};
5037			var valueOrDefault = helpers.valueAtIndexOrDefault;
5038			var getHoverColor = helpers.getHoverColor;
5039			var model = element._model;
5040
5041			model.backgroundColor = custom.hoverBackgroundColor ? custom.hoverBackgroundColor : valueOrDefault(dataset.hoverBackgroundColor, index, getHoverColor(model.backgroundColor));
5042			model.borderColor = custom.hoverBorderColor ? custom.hoverBorderColor : valueOrDefault(dataset.hoverBorderColor, index, getHoverColor(model.borderColor));
5043			model.borderWidth = custom.hoverBorderWidth ? custom.hoverBorderWidth : valueOrDefault(dataset.hoverBorderWidth, index, model.borderWidth);
5044		},
5045
5046		/**
5047		 * @private
5048		 */
5049		resyncElements: function() {
5050			var me = this;
5051			var meta = me.getMeta();
5052			var data = me.getDataset().data;
5053			var numMeta = meta.data.length;
5054			var numData = data.length;
5055
5056			if (numData < numMeta) {
5057				meta.data.splice(numData, numMeta - numData);
5058			} else if (numData > numMeta) {
5059				me.insertElements(numMeta, numData - numMeta);
5060			}
5061		},
5062
5063		/**
5064		 * @private
5065		 */
5066		insertElements: function(start, count) {
5067			for (var i = 0; i < count; ++i) {
5068				this.addElementAndReset(start + i);
5069			}
5070		},
5071
5072		/**
5073		 * @private
5074		 */
5075		onDataPush: function() {
5076			this.insertElements(this.getDataset().data.length - 1, arguments.length);
5077		},
5078
5079		/**
5080		 * @private
5081		 */
5082		onDataPop: function() {
5083			this.getMeta().data.pop();
5084		},
5085
5086		/**
5087		 * @private
5088		 */
5089		onDataShift: function() {
5090			this.getMeta().data.shift();
5091		},
5092
5093		/**
5094		 * @private
5095		 */
5096		onDataSplice: function(start, count) {
5097			this.getMeta().data.splice(start, count);
5098			this.insertElements(start, arguments.length - 2);
5099		},
5100
5101		/**
5102		 * @private
5103		 */
5104		onDataUnshift: function() {
5105			this.insertElements(0, arguments.length);
5106		}
5107	});
5108
5109	Chart.DatasetController.extend = helpers.inherits;
5110};
5111
5112},{"46":46}],26:[function(require,module,exports){
5113'use strict';
5114
5115var helpers = require(46);
5116
5117module.exports = {
5118	/**
5119	 * @private
5120	 */
5121	_set: function(scope, values) {
5122		return helpers.merge(this[scope] || (this[scope] = {}), values);
5123	}
5124};
5125
5126},{"46":46}],27:[function(require,module,exports){
5127'use strict';
5128
5129var color = require(3);
5130var helpers = require(46);
5131
5132function interpolate(start, view, model, ease) {
5133	var keys = Object.keys(model);
5134	var i, ilen, key, actual, origin, target, type, c0, c1;
5135
5136	for (i = 0, ilen = keys.length; i < ilen; ++i) {
5137		key = keys[i];
5138
5139		target = model[key];
5140
5141		// if a value is added to the model after pivot() has been called, the view
5142		// doesn't contain it, so let's initialize the view to the target value.
5143		if (!view.hasOwnProperty(key)) {
5144			view[key] = target;
5145		}
5146
5147		actual = view[key];
5148
5149		if (actual === target || key[0] === '_') {
5150			continue;
5151		}
5152
5153		if (!start.hasOwnProperty(key)) {
5154			start[key] = actual;
5155		}
5156
5157		origin = start[key];
5158
5159		type = typeof target;
5160
5161		if (type === typeof origin) {
5162			if (type === 'string') {
5163				c0 = color(origin);
5164				if (c0.valid) {
5165					c1 = color(target);
5166					if (c1.valid) {
5167						view[key] = c1.mix(c0, ease).rgbString();
5168						continue;
5169					}
5170				}
5171			} else if (type === 'number' && isFinite(origin) && isFinite(target)) {
5172				view[key] = origin + (target - origin) * ease;
5173				continue;
5174			}
5175		}
5176
5177		view[key] = target;
5178	}
5179}
5180
5181var Element = function(configuration) {
5182	helpers.extend(this, configuration);
5183	this.initialize.apply(this, arguments);
5184};
5185
5186helpers.extend(Element.prototype, {
5187
5188	initialize: function() {
5189		this.hidden = false;
5190	},
5191
5192	pivot: function() {
5193		var me = this;
5194		if (!me._view) {
5195			me._view = helpers.clone(me._model);
5196		}
5197		me._start = {};
5198		return me;
5199	},
5200
5201	transition: function(ease) {
5202		var me = this;
5203		var model = me._model;
5204		var start = me._start;
5205		var view = me._view;
5206
5207		// No animation -> No Transition
5208		if (!model || ease === 1) {
5209			me._view = model;
5210			me._start = null;
5211			return me;
5212		}
5213
5214		if (!view) {
5215			view = me._view = {};
5216		}
5217
5218		if (!start) {
5219			start = me._start = {};
5220		}
5221
5222		interpolate(start, view, model, ease);
5223
5224		return me;
5225	},
5226
5227	tooltipPosition: function() {
5228		return {
5229			x: this._model.x,
5230			y: this._model.y
5231		};
5232	},
5233
5234	hasValue: function() {
5235		return helpers.isNumber(this._model.x) && helpers.isNumber(this._model.y);
5236	}
5237});
5238
5239Element.extend = helpers.inherits;
5240
5241module.exports = Element;
5242
5243},{"3":3,"46":46}],28:[function(require,module,exports){
5244/* global window: false */
5245/* global document: false */
5246'use strict';
5247
5248var color = require(3);
5249var defaults = require(26);
5250var helpers = require(46);
5251var scaleService = require(34);
5252
5253module.exports = function() {
5254
5255	// -- Basic js utility methods
5256
5257	helpers.configMerge = function(/* objects ... */) {
5258		return helpers.merge(helpers.clone(arguments[0]), [].slice.call(arguments, 1), {
5259			merger: function(key, target, source, options) {
5260				var tval = target[key] || {};
5261				var sval = source[key];
5262
5263				if (key === 'scales') {
5264					// scale config merging is complex. Add our own function here for that
5265					target[key] = helpers.scaleMerge(tval, sval);
5266				} else if (key === 'scale') {
5267					// used in polar area & radar charts since there is only one scale
5268					target[key] = helpers.merge(tval, [scaleService.getScaleDefaults(sval.type), sval]);
5269				} else {
5270					helpers._merger(key, target, source, options);
5271				}
5272			}
5273		});
5274	};
5275
5276	helpers.scaleMerge = function(/* objects ... */) {
5277		return helpers.merge(helpers.clone(arguments[0]), [].slice.call(arguments, 1), {
5278			merger: function(key, target, source, options) {
5279				if (key === 'xAxes' || key === 'yAxes') {
5280					var slen = source[key].length;
5281					var i, type, scale;
5282
5283					if (!target[key]) {
5284						target[key] = [];
5285					}
5286
5287					for (i = 0; i < slen; ++i) {
5288						scale = source[key][i];
5289						type = helpers.valueOrDefault(scale.type, key === 'xAxes' ? 'category' : 'linear');
5290
5291						if (i >= target[key].length) {
5292							target[key].push({});
5293						}
5294
5295						if (!target[key][i].type || (scale.type && scale.type !== target[key][i].type)) {
5296							// new/untyped scale or type changed: let's apply the new defaults
5297							// then merge source scale to correctly overwrite the defaults.
5298							helpers.merge(target[key][i], [scaleService.getScaleDefaults(type), scale]);
5299						} else {
5300							// scales type are the same
5301							helpers.merge(target[key][i], scale);
5302						}
5303					}
5304				} else {
5305					helpers._merger(key, target, source, options);
5306				}
5307			}
5308		});
5309	};
5310
5311	helpers.where = function(collection, filterCallback) {
5312		if (helpers.isArray(collection) && Array.prototype.filter) {
5313			return collection.filter(filterCallback);
5314		}
5315		var filtered = [];
5316
5317		helpers.each(collection, function(item) {
5318			if (filterCallback(item)) {
5319				filtered.push(item);
5320			}
5321		});
5322
5323		return filtered;
5324	};
5325	helpers.findIndex = Array.prototype.findIndex ?
5326		function(array, callback, scope) {
5327			return array.findIndex(callback, scope);
5328		} :
5329		function(array, callback, scope) {
5330			scope = scope === undefined ? array : scope;
5331			for (var i = 0, ilen = array.length; i < ilen; ++i) {
5332				if (callback.call(scope, array[i], i, array)) {
5333					return i;
5334				}
5335			}
5336			return -1;
5337		};
5338	helpers.findNextWhere = function(arrayToSearch, filterCallback, startIndex) {
5339		// Default to start of the array
5340		if (helpers.isNullOrUndef(startIndex)) {
5341			startIndex = -1;
5342		}
5343		for (var i = startIndex + 1; i < arrayToSearch.length; i++) {
5344			var currentItem = arrayToSearch[i];
5345			if (filterCallback(currentItem)) {
5346				return currentItem;
5347			}
5348		}
5349	};
5350	helpers.findPreviousWhere = function(arrayToSearch, filterCallback, startIndex) {
5351		// Default to end of the array
5352		if (helpers.isNullOrUndef(startIndex)) {
5353			startIndex = arrayToSearch.length;
5354		}
5355		for (var i = startIndex - 1; i >= 0; i--) {
5356			var currentItem = arrayToSearch[i];
5357			if (filterCallback(currentItem)) {
5358				return currentItem;
5359			}
5360		}
5361	};
5362
5363	// -- Math methods
5364	helpers.isNumber = function(n) {
5365		return !isNaN(parseFloat(n)) && isFinite(n);
5366	};
5367	helpers.almostEquals = function(x, y, epsilon) {
5368		return Math.abs(x - y) < epsilon;
5369	};
5370	helpers.almostWhole = function(x, epsilon) {
5371		var rounded = Math.round(x);
5372		return (((rounded - epsilon) < x) && ((rounded + epsilon) > x));
5373	};
5374	helpers.max = function(array) {
5375		return array.reduce(function(max, value) {
5376			if (!isNaN(value)) {
5377				return Math.max(max, value);
5378			}
5379			return max;
5380		}, Number.NEGATIVE_INFINITY);
5381	};
5382	helpers.min = function(array) {
5383		return array.reduce(function(min, value) {
5384			if (!isNaN(value)) {
5385				return Math.min(min, value);
5386			}
5387			return min;
5388		}, Number.POSITIVE_INFINITY);
5389	};
5390	helpers.sign = Math.sign ?
5391		function(x) {
5392			return Math.sign(x);
5393		} :
5394		function(x) {
5395			x = +x; // convert to a number
5396			if (x === 0 || isNaN(x)) {
5397				return x;
5398			}
5399			return x > 0 ? 1 : -1;
5400		};
5401	helpers.log10 = Math.log10 ?
5402		function(x) {
5403			return Math.log10(x);
5404		} :
5405		function(x) {
5406			var exponent = Math.log(x) * Math.LOG10E; // Math.LOG10E = 1 / Math.LN10.
5407			// Check for whole powers of 10,
5408			// which due to floating point rounding error should be corrected.
5409			var powerOf10 = Math.round(exponent);
5410			var isPowerOf10 = x === Math.pow(10, powerOf10);
5411
5412			return isPowerOf10 ? powerOf10 : exponent;
5413		};
5414	helpers.toRadians = function(degrees) {
5415		return degrees * (Math.PI / 180);
5416	};
5417	helpers.toDegrees = function(radians) {
5418		return radians * (180 / Math.PI);
5419	};
5420	// Gets the angle from vertical upright to the point about a centre.
5421	helpers.getAngleFromPoint = function(centrePoint, anglePoint) {
5422		var distanceFromXCenter = anglePoint.x - centrePoint.x;
5423		var distanceFromYCenter = anglePoint.y - centrePoint.y;
5424		var radialDistanceFromCenter = Math.sqrt(distanceFromXCenter * distanceFromXCenter + distanceFromYCenter * distanceFromYCenter);
5425
5426		var angle = Math.atan2(distanceFromYCenter, distanceFromXCenter);
5427
5428		if (angle < (-0.5 * Math.PI)) {
5429			angle += 2.0 * Math.PI; // make sure the returned angle is in the range of (-PI/2, 3PI/2]
5430		}
5431
5432		return {
5433			angle: angle,
5434			distance: radialDistanceFromCenter
5435		};
5436	};
5437	helpers.distanceBetweenPoints = function(pt1, pt2) {
5438		return Math.sqrt(Math.pow(pt2.x - pt1.x, 2) + Math.pow(pt2.y - pt1.y, 2));
5439	};
5440	helpers.aliasPixel = function(pixelWidth) {
5441		return (pixelWidth % 2 === 0) ? 0 : 0.5;
5442	};
5443	helpers.splineCurve = function(firstPoint, middlePoint, afterPoint, t) {
5444		// Props to Rob Spencer at scaled innovation for his post on splining between points
5445		// http://scaledinnovation.com/analytics/splines/aboutSplines.html
5446
5447		// This function must also respect "skipped" points
5448
5449		var previous = firstPoint.skip ? middlePoint : firstPoint;
5450		var current = middlePoint;
5451		var next = afterPoint.skip ? middlePoint : afterPoint;
5452
5453		var d01 = Math.sqrt(Math.pow(current.x - previous.x, 2) + Math.pow(current.y - previous.y, 2));
5454		var d12 = Math.sqrt(Math.pow(next.x - current.x, 2) + Math.pow(next.y - current.y, 2));
5455
5456		var s01 = d01 / (d01 + d12);
5457		var s12 = d12 / (d01 + d12);
5458
5459		// If all points are the same, s01 & s02 will be inf
5460		s01 = isNaN(s01) ? 0 : s01;
5461		s12 = isNaN(s12) ? 0 : s12;
5462
5463		var fa = t * s01; // scaling factor for triangle Ta
5464		var fb = t * s12;
5465
5466		return {
5467			previous: {
5468				x: current.x - fa * (next.x - previous.x),
5469				y: current.y - fa * (next.y - previous.y)
5470			},
5471			next: {
5472				x: current.x + fb * (next.x - previous.x),
5473				y: current.y + fb * (next.y - previous.y)
5474			}
5475		};
5476	};
5477	helpers.EPSILON = Number.EPSILON || 1e-14;
5478	helpers.splineCurveMonotone = function(points) {
5479		// This function calculates Bézier control points in a similar way than |splineCurve|,
5480		// but preserves monotonicity of the provided data and ensures no local extremums are added
5481		// between the dataset discrete points due to the interpolation.
5482		// See : https://en.wikipedia.org/wiki/Monotone_cubic_interpolation
5483
5484		var pointsWithTangents = (points || []).map(function(point) {
5485			return {
5486				model: point._model,
5487				deltaK: 0,
5488				mK: 0
5489			};
5490		});
5491
5492		// Calculate slopes (deltaK) and initialize tangents (mK)
5493		var pointsLen = pointsWithTangents.length;
5494		var i, pointBefore, pointCurrent, pointAfter;
5495		for (i = 0; i < pointsLen; ++i) {
5496			pointCurrent = pointsWithTangents[i];
5497			if (pointCurrent.model.skip) {
5498				continue;
5499			}
5500
5501			pointBefore = i > 0 ? pointsWithTangents[i - 1] : null;
5502			pointAfter = i < pointsLen - 1 ? pointsWithTangents[i + 1] : null;
5503			if (pointAfter && !pointAfter.model.skip) {
5504				var slopeDeltaX = (pointAfter.model.x - pointCurrent.model.x);
5505
5506				// In the case of two points that appear at the same x pixel, slopeDeltaX is 0
5507				pointCurrent.deltaK = slopeDeltaX !== 0 ? (pointAfter.model.y - pointCurrent.model.y) / slopeDeltaX : 0;
5508			}
5509
5510			if (!pointBefore || pointBefore.model.skip) {
5511				pointCurrent.mK = pointCurrent.deltaK;
5512			} else if (!pointAfter || pointAfter.model.skip) {
5513				pointCurrent.mK = pointBefore.deltaK;
5514			} else if (this.sign(pointBefore.deltaK) !== this.sign(pointCurrent.deltaK)) {
5515				pointCurrent.mK = 0;
5516			} else {
5517				pointCurrent.mK = (pointBefore.deltaK + pointCurrent.deltaK) / 2;
5518			}
5519		}
5520
5521		// Adjust tangents to ensure monotonic properties
5522		var alphaK, betaK, tauK, squaredMagnitude;
5523		for (i = 0; i < pointsLen - 1; ++i) {
5524			pointCurrent = pointsWithTangents[i];
5525			pointAfter = pointsWithTangents[i + 1];
5526			if (pointCurrent.model.skip || pointAfter.model.skip) {
5527				continue;
5528			}
5529
5530			if (helpers.almostEquals(pointCurrent.deltaK, 0, this.EPSILON)) {
5531				pointCurrent.mK = pointAfter.mK = 0;
5532				continue;
5533			}
5534
5535			alphaK = pointCurrent.mK / pointCurrent.deltaK;
5536			betaK = pointAfter.mK / pointCurrent.deltaK;
5537			squaredMagnitude = Math.pow(alphaK, 2) + Math.pow(betaK, 2);
5538			if (squaredMagnitude <= 9) {
5539				continue;
5540			}
5541
5542			tauK = 3 / Math.sqrt(squaredMagnitude);
5543			pointCurrent.mK = alphaK * tauK * pointCurrent.deltaK;
5544			pointAfter.mK = betaK * tauK * pointCurrent.deltaK;
5545		}
5546
5547		// Compute control points
5548		var deltaX;
5549		for (i = 0; i < pointsLen; ++i) {
5550			pointCurrent = pointsWithTangents[i];
5551			if (pointCurrent.model.skip) {
5552				continue;
5553			}
5554
5555			pointBefore = i > 0 ? pointsWithTangents[i - 1] : null;
5556			pointAfter = i < pointsLen - 1 ? pointsWithTangents[i + 1] : null;
5557			if (pointBefore && !pointBefore.model.skip) {
5558				deltaX = (pointCurrent.model.x - pointBefore.model.x) / 3;
5559				pointCurrent.model.controlPointPreviousX = pointCurrent.model.x - deltaX;
5560				pointCurrent.model.controlPointPreviousY = pointCurrent.model.y - deltaX * pointCurrent.mK;
5561			}
5562			if (pointAfter && !pointAfter.model.skip) {
5563				deltaX = (pointAfter.model.x - pointCurrent.model.x) / 3;
5564				pointCurrent.model.controlPointNextX = pointCurrent.model.x + deltaX;
5565				pointCurrent.model.controlPointNextY = pointCurrent.model.y + deltaX * pointCurrent.mK;
5566			}
5567		}
5568	};
5569	helpers.nextItem = function(collection, index, loop) {
5570		if (loop) {
5571			return index >= collection.length - 1 ? collection[0] : collection[index + 1];
5572		}
5573		return index >= collection.length - 1 ? collection[collection.length - 1] : collection[index + 1];
5574	};
5575	helpers.previousItem = function(collection, index, loop) {
5576		if (loop) {
5577			return index <= 0 ? collection[collection.length - 1] : collection[index - 1];
5578		}
5579		return index <= 0 ? collection[0] : collection[index - 1];
5580	};
5581	// Implementation of the nice number algorithm used in determining where axis labels will go
5582	helpers.niceNum = function(range, round) {
5583		var exponent = Math.floor(helpers.log10(range));
5584		var fraction = range / Math.pow(10, exponent);
5585		var niceFraction;
5586
5587		if (round) {
5588			if (fraction < 1.5) {
5589				niceFraction = 1;
5590			} else if (fraction < 3) {
5591				niceFraction = 2;
5592			} else if (fraction < 7) {
5593				niceFraction = 5;
5594			} else {
5595				niceFraction = 10;
5596			}
5597		} else if (fraction <= 1.0) {
5598			niceFraction = 1;
5599		} else if (fraction <= 2) {
5600			niceFraction = 2;
5601		} else if (fraction <= 5) {
5602			niceFraction = 5;
5603		} else {
5604			niceFraction = 10;
5605		}
5606
5607		return niceFraction * Math.pow(10, exponent);
5608	};
5609	// Request animation polyfill - http://www.paulirish.com/2011/requestanimationframe-for-smart-animating/
5610	helpers.requestAnimFrame = (function() {
5611		if (typeof window === 'undefined') {
5612			return function(callback) {
5613				callback();
5614			};
5615		}
5616		return window.requestAnimationFrame ||
5617			window.webkitRequestAnimationFrame ||
5618			window.mozRequestAnimationFrame ||
5619			window.oRequestAnimationFrame ||
5620			window.msRequestAnimationFrame ||
5621			function(callback) {
5622				return window.setTimeout(callback, 1000 / 60);
5623			};
5624	}());
5625	// -- DOM methods
5626	helpers.getRelativePosition = function(evt, chart) {
5627		var mouseX, mouseY;
5628		var e = evt.originalEvent || evt;
5629		var canvas = evt.currentTarget || evt.srcElement;
5630		var boundingRect = canvas.getBoundingClientRect();
5631
5632		var touches = e.touches;
5633		if (touches && touches.length > 0) {
5634			mouseX = touches[0].clientX;
5635			mouseY = touches[0].clientY;
5636
5637		} else {
5638			mouseX = e.clientX;
5639			mouseY = e.clientY;
5640		}
5641
5642		// Scale mouse coordinates into canvas coordinates
5643		// by following the pattern laid out by 'jerryj' in the comments of
5644		// http://www.html5canvastutorials.com/advanced/html5-canvas-mouse-coordinates/
5645		var paddingLeft = parseFloat(helpers.getStyle(canvas, 'padding-left'));
5646		var paddingTop = parseFloat(helpers.getStyle(canvas, 'padding-top'));
5647		var paddingRight = parseFloat(helpers.getStyle(canvas, 'padding-right'));
5648		var paddingBottom = parseFloat(helpers.getStyle(canvas, 'padding-bottom'));
5649		var width = boundingRect.right - boundingRect.left - paddingLeft - paddingRight;
5650		var height = boundingRect.bottom - boundingRect.top - paddingTop - paddingBottom;
5651
5652		// We divide by the current device pixel ratio, because the canvas is scaled up by that amount in each direction. However
5653		// the backend model is in unscaled coordinates. Since we are going to deal with our model coordinates, we go back here
5654		mouseX = Math.round((mouseX - boundingRect.left - paddingLeft) / (width) * canvas.width / chart.currentDevicePixelRatio);
5655		mouseY = Math.round((mouseY - boundingRect.top - paddingTop) / (height) * canvas.height / chart.currentDevicePixelRatio);
5656
5657		return {
5658			x: mouseX,
5659			y: mouseY
5660		};
5661
5662	};
5663
5664	// Private helper function to convert max-width/max-height values that may be percentages into a number
5665	function parseMaxStyle(styleValue, node, parentProperty) {
5666		var valueInPixels;
5667		if (typeof styleValue === 'string') {
5668			valueInPixels = parseInt(styleValue, 10);
5669
5670			if (styleValue.indexOf('%') !== -1) {
5671				// percentage * size in dimension
5672				valueInPixels = valueInPixels / 100 * node.parentNode[parentProperty];
5673			}
5674		} else {
5675			valueInPixels = styleValue;
5676		}
5677
5678		return valueInPixels;
5679	}
5680
5681	/**
5682	 * Returns if the given value contains an effective constraint.
5683	 * @private
5684	 */
5685	function isConstrainedValue(value) {
5686		return value !== undefined && value !== null && value !== 'none';
5687	}
5688
5689	// Private helper to get a constraint dimension
5690	// @param domNode : the node to check the constraint on
5691	// @param maxStyle : the style that defines the maximum for the direction we are using (maxWidth / maxHeight)
5692	// @param percentageProperty : property of parent to use when calculating width as a percentage
5693	// @see http://www.nathanaeljones.com/blog/2013/reading-max-width-cross-browser
5694	function getConstraintDimension(domNode, maxStyle, percentageProperty) {
5695		var view = document.defaultView;
5696		var parentNode = domNode.parentNode;
5697		var constrainedNode = view.getComputedStyle(domNode)[maxStyle];
5698		var constrainedContainer = view.getComputedStyle(parentNode)[maxStyle];
5699		var hasCNode = isConstrainedValue(constrainedNode);
5700		var hasCContainer = isConstrainedValue(constrainedContainer);
5701		var infinity = Number.POSITIVE_INFINITY;
5702
5703		if (hasCNode || hasCContainer) {
5704			return Math.min(
5705				hasCNode ? parseMaxStyle(constrainedNode, domNode, percentageProperty) : infinity,
5706				hasCContainer ? parseMaxStyle(constrainedContainer, parentNode, percentageProperty) : infinity);
5707		}
5708
5709		return 'none';
5710	}
5711	// returns Number or undefined if no constraint
5712	helpers.getConstraintWidth = function(domNode) {
5713		return getConstraintDimension(domNode, 'max-width', 'clientWidth');
5714	};
5715	// returns Number or undefined if no constraint
5716	helpers.getConstraintHeight = function(domNode) {
5717		return getConstraintDimension(domNode, 'max-height', 'clientHeight');
5718	};
5719	helpers.getMaximumWidth = function(domNode) {
5720		var container = domNode.parentNode;
5721		if (!container) {
5722			return domNode.clientWidth;
5723		}
5724
5725		var paddingLeft = parseInt(helpers.getStyle(container, 'padding-left'), 10);
5726		var paddingRight = parseInt(helpers.getStyle(container, 'padding-right'), 10);
5727		var w = container.clientWidth - paddingLeft - paddingRight;
5728		var cw = helpers.getConstraintWidth(domNode);
5729		return isNaN(cw) ? w : Math.min(w, cw);
5730	};
5731	helpers.getMaximumHeight = function(domNode) {
5732		var container = domNode.parentNode;
5733		if (!container) {
5734			return domNode.clientHeight;
5735		}
5736
5737		var paddingTop = parseInt(helpers.getStyle(container, 'padding-top'), 10);
5738		var paddingBottom = parseInt(helpers.getStyle(container, 'padding-bottom'), 10);
5739		var h = container.clientHeight - paddingTop - paddingBottom;
5740		var ch = helpers.getConstraintHeight(domNode);
5741		return isNaN(ch) ? h : Math.min(h, ch);
5742	};
5743	helpers.getStyle = function(el, property) {
5744		return el.currentStyle ?
5745			el.currentStyle[property] :
5746			document.defaultView.getComputedStyle(el, null).getPropertyValue(property);
5747	};
5748	helpers.retinaScale = function(chart, forceRatio) {
5749		var pixelRatio = chart.currentDevicePixelRatio = forceRatio || (typeof window !== 'undefined' && window.devicePixelRatio) || 1;
5750		if (pixelRatio === 1) {
5751			return;
5752		}
5753
5754		var canvas = chart.canvas;
5755		var height = chart.height;
5756		var width = chart.width;
5757
5758		canvas.height = height * pixelRatio;
5759		canvas.width = width * pixelRatio;
5760		chart.ctx.scale(pixelRatio, pixelRatio);
5761
5762		// If no style has been set on the canvas, the render size is used as display size,
5763		// making the chart visually bigger, so let's enforce it to the "correct" values.
5764		// See https://github.com/chartjs/Chart.js/issues/3575
5765		if (!canvas.style.height && !canvas.style.width) {
5766			canvas.style.height = height + 'px';
5767			canvas.style.width = width + 'px';
5768		}
5769	};
5770	// -- Canvas methods
5771	helpers.fontString = function(pixelSize, fontStyle, fontFamily) {
5772		return fontStyle + ' ' + pixelSize + 'px ' + fontFamily;
5773	};
5774	helpers.longestText = function(ctx, font, arrayOfThings, cache) {
5775		cache = cache || {};
5776		var data = cache.data = cache.data || {};
5777		var gc = cache.garbageCollect = cache.garbageCollect || [];
5778
5779		if (cache.font !== font) {
5780			data = cache.data = {};
5781			gc = cache.garbageCollect = [];
5782			cache.font = font;
5783		}
5784
5785		ctx.font = font;
5786		var longest = 0;
5787		helpers.each(arrayOfThings, function(thing) {
5788			// Undefined strings and arrays should not be measured
5789			if (thing !== undefined && thing !== null && helpers.isArray(thing) !== true) {
5790				longest = helpers.measureText(ctx, data, gc, longest, thing);
5791			} else if (helpers.isArray(thing)) {
5792				// if it is an array lets measure each element
5793				// to do maybe simplify this function a bit so we can do this more recursively?
5794				helpers.each(thing, function(nestedThing) {
5795					// Undefined strings and arrays should not be measured
5796					if (nestedThing !== undefined && nestedThing !== null && !helpers.isArray(nestedThing)) {
5797						longest = helpers.measureText(ctx, data, gc, longest, nestedThing);
5798					}
5799				});
5800			}
5801		});
5802
5803		var gcLen = gc.length / 2;
5804		if (gcLen > arrayOfThings.length) {
5805			for (var i = 0; i < gcLen; i++) {
5806				delete data[gc[i]];
5807			}
5808			gc.splice(0, gcLen);
5809		}
5810		return longest;
5811	};
5812	helpers.measureText = function(ctx, data, gc, longest, string) {
5813		var textWidth = data[string];
5814		if (!textWidth) {
5815			textWidth = data[string] = ctx.measureText(string).width;
5816			gc.push(string);
5817		}
5818		if (textWidth > longest) {
5819			longest = textWidth;
5820		}
5821		return longest;
5822	};
5823	helpers.numberOfLabelLines = function(arrayOfThings) {
5824		var numberOfLines = 1;
5825		helpers.each(arrayOfThings, function(thing) {
5826			if (helpers.isArray(thing)) {
5827				if (thing.length > numberOfLines) {
5828					numberOfLines = thing.length;
5829				}
5830			}
5831		});
5832		return numberOfLines;
5833	};
5834
5835	helpers.color = !color ?
5836		function(value) {
5837			console.error('Color.js not found!');
5838			return value;
5839		} :
5840		function(value) {
5841			/* global CanvasGradient */
5842			if (value instanceof CanvasGradient) {
5843				value = defaults.global.defaultColor;
5844			}
5845
5846			return color(value);
5847		};
5848
5849	helpers.getHoverColor = function(colorValue) {
5850		/* global CanvasPattern */
5851		return (colorValue instanceof CanvasPattern) ?
5852			colorValue :
5853			helpers.color(colorValue).saturate(0.5).darken(0.1).rgbString();
5854	};
5855};
5856
5857},{"26":26,"3":3,"34":34,"46":46}],29:[function(require,module,exports){
5858'use strict';
5859
5860var helpers = require(46);
5861
5862/**
5863 * Helper function to get relative position for an event
5864 * @param {Event|IEvent} event - The event to get the position for
5865 * @param {Chart} chart - The chart
5866 * @returns {Point} the event position
5867 */
5868function getRelativePosition(e, chart) {
5869	if (e.native) {
5870		return {
5871			x: e.x,
5872			y: e.y
5873		};
5874	}
5875
5876	return helpers.getRelativePosition(e, chart);
5877}
5878
5879/**
5880 * Helper function to traverse all of the visible elements in the chart
5881 * @param chart {chart} the chart
5882 * @param handler {Function} the callback to execute for each visible item
5883 */
5884function parseVisibleItems(chart, handler) {
5885	var datasets = chart.data.datasets;
5886	var meta, i, j, ilen, jlen;
5887
5888	for (i = 0, ilen = datasets.length; i < ilen; ++i) {
5889		if (!chart.isDatasetVisible(i)) {
5890			continue;
5891		}
5892
5893		meta = chart.getDatasetMeta(i);
5894		for (j = 0, jlen = meta.data.length; j < jlen; ++j) {
5895			var element = meta.data[j];
5896			if (!element._view.skip) {
5897				handler(element);
5898			}
5899		}
5900	}
5901}
5902
5903/**
5904 * Helper function to get the items that intersect the event position
5905 * @param items {ChartElement[]} elements to filter
5906 * @param position {Point} the point to be nearest to
5907 * @return {ChartElement[]} the nearest items
5908 */
5909function getIntersectItems(chart, position) {
5910	var elements = [];
5911
5912	parseVisibleItems(chart, function(element) {
5913		if (element.inRange(position.x, position.y)) {
5914			elements.push(element);
5915		}
5916	});
5917
5918	return elements;
5919}
5920
5921/**
5922 * Helper function to get the items nearest to the event position considering all visible items in teh chart
5923 * @param chart {Chart} the chart to look at elements from
5924 * @param position {Point} the point to be nearest to
5925 * @param intersect {Boolean} if true, only consider items that intersect the position
5926 * @param distanceMetric {Function} function to provide the distance between points
5927 * @return {ChartElement[]} the nearest items
5928 */
5929function getNearestItems(chart, position, intersect, distanceMetric) {
5930	var minDistance = Number.POSITIVE_INFINITY;
5931	var nearestItems = [];
5932
5933	parseVisibleItems(chart, function(element) {
5934		if (intersect && !element.inRange(position.x, position.y)) {
5935			return;
5936		}
5937
5938		var center = element.getCenterPoint();
5939		var distance = distanceMetric(position, center);
5940
5941		if (distance < minDistance) {
5942			nearestItems = [element];
5943			minDistance = distance;
5944		} else if (distance === minDistance) {
5945			// Can have multiple items at the same distance in which case we sort by size
5946			nearestItems.push(element);
5947		}
5948	});
5949
5950	return nearestItems;
5951}
5952
5953/**
5954 * Get a distance metric function for two points based on the
5955 * axis mode setting
5956 * @param {String} axis the axis mode. x|y|xy
5957 */
5958function getDistanceMetricForAxis(axis) {
5959	var useX = axis.indexOf('x') !== -1;
5960	var useY = axis.indexOf('y') !== -1;
5961
5962	return function(pt1, pt2) {
5963		var deltaX = useX ? Math.abs(pt1.x - pt2.x) : 0;
5964		var deltaY = useY ? Math.abs(pt1.y - pt2.y) : 0;
5965		return Math.sqrt(Math.pow(deltaX, 2) + Math.pow(deltaY, 2));
5966	};
5967}
5968
5969function indexMode(chart, e, options) {
5970	var position = getRelativePosition(e, chart);
5971	// Default axis for index mode is 'x' to match old behaviour
5972	options.axis = options.axis || 'x';
5973	var distanceMetric = getDistanceMetricForAxis(options.axis);
5974	var items = options.intersect ? getIntersectItems(chart, position) : getNearestItems(chart, position, false, distanceMetric);
5975	var elements = [];
5976
5977	if (!items.length) {
5978		return [];
5979	}
5980
5981	chart.data.datasets.forEach(function(dataset, datasetIndex) {
5982		if (chart.isDatasetVisible(datasetIndex)) {
5983			var meta = chart.getDatasetMeta(datasetIndex);
5984			var element = meta.data[items[0]._index];
5985
5986			// don't count items that are skipped (null data)
5987			if (element && !element._view.skip) {
5988				elements.push(element);
5989			}
5990		}
5991	});
5992
5993	return elements;
5994}
5995
5996/**
5997 * @interface IInteractionOptions
5998 */
5999/**
6000 * If true, only consider items that intersect the point
6001 * @name IInterfaceOptions#boolean
6002 * @type Boolean
6003 */
6004
6005/**
6006 * Contains interaction related functions
6007 * @namespace Chart.Interaction
6008 */
6009module.exports = {
6010	// Helper function for different modes
6011	modes: {
6012		single: function(chart, e) {
6013			var position = getRelativePosition(e, chart);
6014			var elements = [];
6015
6016			parseVisibleItems(chart, function(element) {
6017				if (element.inRange(position.x, position.y)) {
6018					elements.push(element);
6019					return elements;
6020				}
6021			});
6022
6023			return elements.slice(0, 1);
6024		},
6025
6026		/**
6027		 * @function Chart.Interaction.modes.label
6028		 * @deprecated since version 2.4.0
6029		 * @todo remove at version 3
6030		 * @private
6031		 */
6032		label: indexMode,
6033
6034		/**
6035		 * Returns items at the same index. If the options.intersect parameter is true, we only return items if we intersect something
6036		 * If the options.intersect mode is false, we find the nearest item and return the items at the same index as that item
6037		 * @function Chart.Interaction.modes.index
6038		 * @since v2.4.0
6039		 * @param chart {chart} the chart we are returning items from
6040		 * @param e {Event} the event we are find things at
6041		 * @param options {IInteractionOptions} options to use during interaction
6042		 * @return {Chart.Element[]} Array of elements that are under the point. If none are found, an empty array is returned
6043		 */
6044		index: indexMode,
6045
6046		/**
6047		 * Returns items in the same dataset. If the options.intersect parameter is true, we only return items if we intersect something
6048		 * If the options.intersect is false, we find the nearest item and return the items in that dataset
6049		 * @function Chart.Interaction.modes.dataset
6050		 * @param chart {chart} the chart we are returning items from
6051		 * @param e {Event} the event we are find things at
6052		 * @param options {IInteractionOptions} options to use during interaction
6053		 * @return {Chart.Element[]} Array of elements that are under the point. If none are found, an empty array is returned
6054		 */
6055		dataset: function(chart, e, options) {
6056			var position = getRelativePosition(e, chart);
6057			options.axis = options.axis || 'xy';
6058			var distanceMetric = getDistanceMetricForAxis(options.axis);
6059			var items = options.intersect ? getIntersectItems(chart, position) : getNearestItems(chart, position, false, distanceMetric);
6060
6061			if (items.length > 0) {
6062				items = chart.getDatasetMeta(items[0]._datasetIndex).data;
6063			}
6064
6065			return items;
6066		},
6067
6068		/**
6069		 * @function Chart.Interaction.modes.x-axis
6070		 * @deprecated since version 2.4.0. Use index mode and intersect == true
6071		 * @todo remove at version 3
6072		 * @private
6073		 */
6074		'x-axis': function(chart, e) {
6075			return indexMode(chart, e, {intersect: false});
6076		},
6077
6078		/**
6079		 * Point mode returns all elements that hit test based on the event position
6080		 * of the event
6081		 * @function Chart.Interaction.modes.intersect
6082		 * @param chart {chart} the chart we are returning items from
6083		 * @param e {Event} the event we are find things at
6084		 * @return {Chart.Element[]} Array of elements that are under the point. If none are found, an empty array is returned
6085		 */
6086		point: function(chart, e) {
6087			var position = getRelativePosition(e, chart);
6088			return getIntersectItems(chart, position);
6089		},
6090
6091		/**
6092		 * nearest mode returns the element closest to the point
6093		 * @function Chart.Interaction.modes.intersect
6094		 * @param chart {chart} the chart we are returning items from
6095		 * @param e {Event} the event we are find things at
6096		 * @param options {IInteractionOptions} options to use
6097		 * @return {Chart.Element[]} Array of elements that are under the point. If none are found, an empty array is returned
6098		 */
6099		nearest: function(chart, e, options) {
6100			var position = getRelativePosition(e, chart);
6101			options.axis = options.axis || 'xy';
6102			var distanceMetric = getDistanceMetricForAxis(options.axis);
6103			var nearestItems = getNearestItems(chart, position, options.intersect, distanceMetric);
6104
6105			// We have multiple items at the same distance from the event. Now sort by smallest
6106			if (nearestItems.length > 1) {
6107				nearestItems.sort(function(a, b) {
6108					var sizeA = a.getArea();
6109					var sizeB = b.getArea();
6110					var ret = sizeA - sizeB;
6111
6112					if (ret === 0) {
6113						// if equal sort by dataset index
6114						ret = a._datasetIndex - b._datasetIndex;
6115					}
6116
6117					return ret;
6118				});
6119			}
6120
6121			// Return only 1 item
6122			return nearestItems.slice(0, 1);
6123		},
6124
6125		/**
6126		 * x mode returns the elements that hit-test at the current x coordinate
6127		 * @function Chart.Interaction.modes.x
6128		 * @param chart {chart} the chart we are returning items from
6129		 * @param e {Event} the event we are find things at
6130		 * @param options {IInteractionOptions} options to use
6131		 * @return {Chart.Element[]} Array of elements that are under the point. If none are found, an empty array is returned
6132		 */
6133		x: function(chart, e, options) {
6134			var position = getRelativePosition(e, chart);
6135			var items = [];
6136			var intersectsItem = false;
6137
6138			parseVisibleItems(chart, function(element) {
6139				if (element.inXRange(position.x)) {
6140					items.push(element);
6141				}
6142
6143				if (element.inRange(position.x, position.y)) {
6144					intersectsItem = true;
6145				}
6146			});
6147
6148			// If we want to trigger on an intersect and we don't have any items
6149			// that intersect the position, return nothing
6150			if (options.intersect && !intersectsItem) {
6151				items = [];
6152			}
6153			return items;
6154		},
6155
6156		/**
6157		 * y mode returns the elements that hit-test at the current y coordinate
6158		 * @function Chart.Interaction.modes.y
6159		 * @param chart {chart} the chart we are returning items from
6160		 * @param e {Event} the event we are find things at
6161		 * @param options {IInteractionOptions} options to use
6162		 * @return {Chart.Element[]} Array of elements that are under the point. If none are found, an empty array is returned
6163		 */
6164		y: function(chart, e, options) {
6165			var position = getRelativePosition(e, chart);
6166			var items = [];
6167			var intersectsItem = false;
6168
6169			parseVisibleItems(chart, function(element) {
6170				if (element.inYRange(position.y)) {
6171					items.push(element);
6172				}
6173
6174				if (element.inRange(position.x, position.y)) {
6175					intersectsItem = true;
6176				}
6177			});
6178
6179			// If we want to trigger on an intersect and we don't have any items
6180			// that intersect the position, return nothing
6181			if (options.intersect && !intersectsItem) {
6182				items = [];
6183			}
6184			return items;
6185		}
6186	}
6187};
6188
6189},{"46":46}],30:[function(require,module,exports){
6190'use strict';
6191
6192var defaults = require(26);
6193
6194defaults._set('global', {
6195	responsive: true,
6196	responsiveAnimationDuration: 0,
6197	maintainAspectRatio: true,
6198	events: ['mousemove', 'mouseout', 'click', 'touchstart', 'touchmove'],
6199	hover: {
6200		onHover: null,
6201		mode: 'nearest',
6202		intersect: true,
6203		animationDuration: 400
6204	},
6205	onClick: null,
6206	defaultColor: 'rgba(0,0,0,0.1)',
6207	defaultFontColor: '#666',
6208	defaultFontFamily: "'Helvetica Neue', 'Helvetica', 'Arial', sans-serif",
6209	defaultFontSize: 12,
6210	defaultFontStyle: 'normal',
6211	showLines: true,
6212
6213	// Element defaults defined in element extensions
6214	elements: {},
6215
6216	// Layout options such as padding
6217	layout: {
6218		padding: {
6219			top: 0,
6220			right: 0,
6221			bottom: 0,
6222			left: 0
6223		}
6224	}
6225});
6226
6227module.exports = function() {
6228
6229	// Occupy the global variable of Chart, and create a simple base class
6230	var Chart = function(item, config) {
6231		this.construct(item, config);
6232		return this;
6233	};
6234
6235	Chart.Chart = Chart;
6236
6237	return Chart;
6238};
6239
6240},{"26":26}],31:[function(require,module,exports){
6241'use strict';
6242
6243var helpers = require(46);
6244
6245function filterByPosition(array, position) {
6246	return helpers.where(array, function(v) {
6247		return v.position === position;
6248	});
6249}
6250
6251function sortByWeight(array, reverse) {
6252	array.forEach(function(v, i) {
6253		v._tmpIndex_ = i;
6254		return v;
6255	});
6256	array.sort(function(a, b) {
6257		var v0 = reverse ? b : a;
6258		var v1 = reverse ? a : b;
6259		return v0.weight === v1.weight ?
6260			v0._tmpIndex_ - v1._tmpIndex_ :
6261			v0.weight - v1.weight;
6262	});
6263	array.forEach(function(v) {
6264		delete v._tmpIndex_;
6265	});
6266}
6267
6268/**
6269 * @interface ILayoutItem
6270 * @prop {String} position - The position of the item in the chart layout. Possible values are
6271 * 'left', 'top', 'right', 'bottom', and 'chartArea'
6272 * @prop {Number} weight - The weight used to sort the item. Higher weights are further away from the chart area
6273 * @prop {Boolean} fullWidth - if true, and the item is horizontal, then push vertical boxes down
6274 * @prop {Function} isHorizontal - returns true if the layout item is horizontal (ie. top or bottom)
6275 * @prop {Function} update - Takes two parameters: width and height. Returns size of item
6276 * @prop {Function} getPadding -  Returns an object with padding on the edges
6277 * @prop {Number} width - Width of item. Must be valid after update()
6278 * @prop {Number} height - Height of item. Must be valid after update()
6279 * @prop {Number} left - Left edge of the item. Set by layout system and cannot be used in update
6280 * @prop {Number} top - Top edge of the item. Set by layout system and cannot be used in update
6281 * @prop {Number} right - Right edge of the item. Set by layout system and cannot be used in update
6282 * @prop {Number} bottom - Bottom edge of the item. Set by layout system and cannot be used in update
6283 */
6284
6285// The layout service is very self explanatory.  It's responsible for the layout within a chart.
6286// Scales, Legends and Plugins all rely on the layout service and can easily register to be placed anywhere they need
6287// It is this service's responsibility of carrying out that layout.
6288module.exports = {
6289	defaults: {},
6290
6291	/**
6292	 * Register a box to a chart.
6293	 * A box is simply a reference to an object that requires layout. eg. Scales, Legend, Title.
6294	 * @param {Chart} chart - the chart to use
6295	 * @param {ILayoutItem} item - the item to add to be layed out
6296	 */
6297	addBox: function(chart, item) {
6298		if (!chart.boxes) {
6299			chart.boxes = [];
6300		}
6301
6302		// initialize item with default values
6303		item.fullWidth = item.fullWidth || false;
6304		item.position = item.position || 'top';
6305		item.weight = item.weight || 0;
6306
6307		chart.boxes.push(item);
6308	},
6309
6310	/**
6311	 * Remove a layoutItem from a chart
6312	 * @param {Chart} chart - the chart to remove the box from
6313	 * @param {Object} layoutItem - the item to remove from the layout
6314	 */
6315	removeBox: function(chart, layoutItem) {
6316		var index = chart.boxes ? chart.boxes.indexOf(layoutItem) : -1;
6317		if (index !== -1) {
6318			chart.boxes.splice(index, 1);
6319		}
6320	},
6321
6322	/**
6323	 * Sets (or updates) options on the given `item`.
6324	 * @param {Chart} chart - the chart in which the item lives (or will be added to)
6325	 * @param {Object} item - the item to configure with the given options
6326	 * @param {Object} options - the new item options.
6327	 */
6328	configure: function(chart, item, options) {
6329		var props = ['fullWidth', 'position', 'weight'];
6330		var ilen = props.length;
6331		var i = 0;
6332		var prop;
6333
6334		for (; i < ilen; ++i) {
6335			prop = props[i];
6336			if (options.hasOwnProperty(prop)) {
6337				item[prop] = options[prop];
6338			}
6339		}
6340	},
6341
6342	/**
6343	 * Fits boxes of the given chart into the given size by having each box measure itself
6344	 * then running a fitting algorithm
6345	 * @param {Chart} chart - the chart
6346	 * @param {Number} width - the width to fit into
6347	 * @param {Number} height - the height to fit into
6348	 */
6349	update: function(chart, width, height) {
6350		if (!chart) {
6351			return;
6352		}
6353
6354		var layoutOptions = chart.options.layout || {};
6355		var padding = helpers.options.toPadding(layoutOptions.padding);
6356		var leftPadding = padding.left;
6357		var rightPadding = padding.right;
6358		var topPadding = padding.top;
6359		var bottomPadding = padding.bottom;
6360
6361		var leftBoxes = filterByPosition(chart.boxes, 'left');
6362		var rightBoxes = filterByPosition(chart.boxes, 'right');
6363		var topBoxes = filterByPosition(chart.boxes, 'top');
6364		var bottomBoxes = filterByPosition(chart.boxes, 'bottom');
6365		var chartAreaBoxes = filterByPosition(chart.boxes, 'chartArea');
6366
6367		// Sort boxes by weight. A higher weight is further away from the chart area
6368		sortByWeight(leftBoxes, true);
6369		sortByWeight(rightBoxes, false);
6370		sortByWeight(topBoxes, true);
6371		sortByWeight(bottomBoxes, false);
6372
6373		// Essentially we now have any number of boxes on each of the 4 sides.
6374		// Our canvas looks like the following.
6375		// The areas L1 and L2 are the left axes. R1 is the right axis, T1 is the top axis and
6376		// B1 is the bottom axis
6377		// There are also 4 quadrant-like locations (left to right instead of clockwise) reserved for chart overlays
6378		// These locations are single-box locations only, when trying to register a chartArea location that is already taken,
6379		// an error will be thrown.
6380		//
6381		// |----------------------------------------------------|
6382		// |                  T1 (Full Width)                   |
6383		// |----------------------------------------------------|
6384		// |    |    |                 T2                  |    |
6385		// |    |----|-------------------------------------|----|
6386		// |    |    | C1 |                           | C2 |    |
6387		// |    |    |----|                           |----|    |
6388		// |    |    |                                     |    |
6389		// | L1 | L2 |           ChartArea (C0)            | R1 |
6390		// |    |    |                                     |    |
6391		// |    |    |----|                           |----|    |
6392		// |    |    | C3 |                           | C4 |    |
6393		// |    |----|-------------------------------------|----|
6394		// |    |    |                 B1                  |    |
6395		// |----------------------------------------------------|
6396		// |                  B2 (Full Width)                   |
6397		// |----------------------------------------------------|
6398		//
6399		// What we do to find the best sizing, we do the following
6400		// 1. Determine the minimum size of the chart area.
6401		// 2. Split the remaining width equally between each vertical axis
6402		// 3. Split the remaining height equally between each horizontal axis
6403		// 4. Give each layout the maximum size it can be. The layout will return it's minimum size
6404		// 5. Adjust the sizes of each axis based on it's minimum reported size.
6405		// 6. Refit each axis
6406		// 7. Position each axis in the final location
6407		// 8. Tell the chart the final location of the chart area
6408		// 9. Tell any axes that overlay the chart area the positions of the chart area
6409
6410		// Step 1
6411		var chartWidth = width - leftPadding - rightPadding;
6412		var chartHeight = height - topPadding - bottomPadding;
6413		var chartAreaWidth = chartWidth / 2; // min 50%
6414		var chartAreaHeight = chartHeight / 2; // min 50%
6415
6416		// Step 2
6417		var verticalBoxWidth = (width - chartAreaWidth) / (leftBoxes.length + rightBoxes.length);
6418
6419		// Step 3
6420		var horizontalBoxHeight = (height - chartAreaHeight) / (topBoxes.length + bottomBoxes.length);
6421
6422		// Step 4
6423		var maxChartAreaWidth = chartWidth;
6424		var maxChartAreaHeight = chartHeight;
6425		var minBoxSizes = [];
6426
6427		function getMinimumBoxSize(box) {
6428			var minSize;
6429			var isHorizontal = box.isHorizontal();
6430
6431			if (isHorizontal) {
6432				minSize = box.update(box.fullWidth ? chartWidth : maxChartAreaWidth, horizontalBoxHeight);
6433				maxChartAreaHeight -= minSize.height;
6434			} else {
6435				minSize = box.update(verticalBoxWidth, maxChartAreaHeight);
6436				maxChartAreaWidth -= minSize.width;
6437			}
6438
6439			minBoxSizes.push({
6440				horizontal: isHorizontal,
6441				minSize: minSize,
6442				box: box,
6443			});
6444		}
6445
6446		helpers.each(leftBoxes.concat(rightBoxes, topBoxes, bottomBoxes), getMinimumBoxSize);
6447
6448		// If a horizontal box has padding, we move the left boxes over to avoid ugly charts (see issue #2478)
6449		var maxHorizontalLeftPadding = 0;
6450		var maxHorizontalRightPadding = 0;
6451		var maxVerticalTopPadding = 0;
6452		var maxVerticalBottomPadding = 0;
6453
6454		helpers.each(topBoxes.concat(bottomBoxes), function(horizontalBox) {
6455			if (horizontalBox.getPadding) {
6456				var boxPadding = horizontalBox.getPadding();
6457				maxHorizontalLeftPadding = Math.max(maxHorizontalLeftPadding, boxPadding.left);
6458				maxHorizontalRightPadding = Math.max(maxHorizontalRightPadding, boxPadding.right);
6459			}
6460		});
6461
6462		helpers.each(leftBoxes.concat(rightBoxes), function(verticalBox) {
6463			if (verticalBox.getPadding) {
6464				var boxPadding = verticalBox.getPadding();
6465				maxVerticalTopPadding = Math.max(maxVerticalTopPadding, boxPadding.top);
6466				maxVerticalBottomPadding = Math.max(maxVerticalBottomPadding, boxPadding.bottom);
6467			}
6468		});
6469
6470		// At this point, maxChartAreaHeight and maxChartAreaWidth are the size the chart area could
6471		// be if the axes are drawn at their minimum sizes.
6472		// Steps 5 & 6
6473		var totalLeftBoxesWidth = leftPadding;
6474		var totalRightBoxesWidth = rightPadding;
6475		var totalTopBoxesHeight = topPadding;
6476		var totalBottomBoxesHeight = bottomPadding;
6477
6478		// Function to fit a box
6479		function fitBox(box) {
6480			var minBoxSize = helpers.findNextWhere(minBoxSizes, function(minBox) {
6481				return minBox.box === box;
6482			});
6483
6484			if (minBoxSize) {
6485				if (box.isHorizontal()) {
6486					var scaleMargin = {
6487						left: Math.max(totalLeftBoxesWidth, maxHorizontalLeftPadding),
6488						right: Math.max(totalRightBoxesWidth, maxHorizontalRightPadding),
6489						top: 0,
6490						bottom: 0
6491					};
6492
6493					// Don't use min size here because of label rotation. When the labels are rotated, their rotation highly depends
6494					// on the margin. Sometimes they need to increase in size slightly
6495					box.update(box.fullWidth ? chartWidth : maxChartAreaWidth, chartHeight / 2, scaleMargin);
6496				} else {
6497					box.update(minBoxSize.minSize.width, maxChartAreaHeight);
6498				}
6499			}
6500		}
6501
6502		// Update, and calculate the left and right margins for the horizontal boxes
6503		helpers.each(leftBoxes.concat(rightBoxes), fitBox);
6504
6505		helpers.each(leftBoxes, function(box) {
6506			totalLeftBoxesWidth += box.width;
6507		});
6508
6509		helpers.each(rightBoxes, function(box) {
6510			totalRightBoxesWidth += box.width;
6511		});
6512
6513		// Set the Left and Right margins for the horizontal boxes
6514		helpers.each(topBoxes.concat(bottomBoxes), fitBox);
6515
6516		// Figure out how much margin is on the top and bottom of the vertical boxes
6517		helpers.each(topBoxes, function(box) {
6518			totalTopBoxesHeight += box.height;
6519		});
6520
6521		helpers.each(bottomBoxes, function(box) {
6522			totalBottomBoxesHeight += box.height;
6523		});
6524
6525		function finalFitVerticalBox(box) {
6526			var minBoxSize = helpers.findNextWhere(minBoxSizes, function(minSize) {
6527				return minSize.box === box;
6528			});
6529
6530			var scaleMargin = {
6531				left: 0,
6532				right: 0,
6533				top: totalTopBoxesHeight,
6534				bottom: totalBottomBoxesHeight
6535			};
6536
6537			if (minBoxSize) {
6538				box.update(minBoxSize.minSize.width, maxChartAreaHeight, scaleMargin);
6539			}
6540		}
6541
6542		// Let the left layout know the final margin
6543		helpers.each(leftBoxes.concat(rightBoxes), finalFitVerticalBox);
6544
6545		// Recalculate because the size of each layout might have changed slightly due to the margins (label rotation for instance)
6546		totalLeftBoxesWidth = leftPadding;
6547		totalRightBoxesWidth = rightPadding;
6548		totalTopBoxesHeight = topPadding;
6549		totalBottomBoxesHeight = bottomPadding;
6550
6551		helpers.each(leftBoxes, function(box) {
6552			totalLeftBoxesWidth += box.width;
6553		});
6554
6555		helpers.each(rightBoxes, function(box) {
6556			totalRightBoxesWidth += box.width;
6557		});
6558
6559		helpers.each(topBoxes, function(box) {
6560			totalTopBoxesHeight += box.height;
6561		});
6562		helpers.each(bottomBoxes, function(box) {
6563			totalBottomBoxesHeight += box.height;
6564		});
6565
6566		// We may be adding some padding to account for rotated x axis labels
6567		var leftPaddingAddition = Math.max(maxHorizontalLeftPadding - totalLeftBoxesWidth, 0);
6568		totalLeftBoxesWidth += leftPaddingAddition;
6569		totalRightBoxesWidth += Math.max(maxHorizontalRightPadding - totalRightBoxesWidth, 0);
6570
6571		var topPaddingAddition = Math.max(maxVerticalTopPadding - totalTopBoxesHeight, 0);
6572		totalTopBoxesHeight += topPaddingAddition;
6573		totalBottomBoxesHeight += Math.max(maxVerticalBottomPadding - totalBottomBoxesHeight, 0);
6574
6575		// Figure out if our chart area changed. This would occur if the dataset layout label rotation
6576		// changed due to the application of the margins in step 6. Since we can only get bigger, this is safe to do
6577		// without calling `fit` again
6578		var newMaxChartAreaHeight = height - totalTopBoxesHeight - totalBottomBoxesHeight;
6579		var newMaxChartAreaWidth = width - totalLeftBoxesWidth - totalRightBoxesWidth;
6580
6581		if (newMaxChartAreaWidth !== maxChartAreaWidth || newMaxChartAreaHeight !== maxChartAreaHeight) {
6582			helpers.each(leftBoxes, function(box) {
6583				box.height = newMaxChartAreaHeight;
6584			});
6585
6586			helpers.each(rightBoxes, function(box) {
6587				box.height = newMaxChartAreaHeight;
6588			});
6589
6590			helpers.each(topBoxes, function(box) {
6591				if (!box.fullWidth) {
6592					box.width = newMaxChartAreaWidth;
6593				}
6594			});
6595
6596			helpers.each(bottomBoxes, function(box) {
6597				if (!box.fullWidth) {
6598					box.width = newMaxChartAreaWidth;
6599				}
6600			});
6601
6602			maxChartAreaHeight = newMaxChartAreaHeight;
6603			maxChartAreaWidth = newMaxChartAreaWidth;
6604		}
6605
6606		// Step 7 - Position the boxes
6607		var left = leftPadding + leftPaddingAddition;
6608		var top = topPadding + topPaddingAddition;
6609
6610		function placeBox(box) {
6611			if (box.isHorizontal()) {
6612				box.left = box.fullWidth ? leftPadding : totalLeftBoxesWidth;
6613				box.right = box.fullWidth ? width - rightPadding : totalLeftBoxesWidth + maxChartAreaWidth;
6614				box.top = top;
6615				box.bottom = top + box.height;
6616
6617				// Move to next point
6618				top = box.bottom;
6619
6620			} else {
6621
6622				box.left = left;
6623				box.right = left + box.width;
6624				box.top = totalTopBoxesHeight;
6625				box.bottom = totalTopBoxesHeight + maxChartAreaHeight;
6626
6627				// Move to next point
6628				left = box.right;
6629			}
6630		}
6631
6632		helpers.each(leftBoxes.concat(topBoxes), placeBox);
6633
6634		// Account for chart width and height
6635		left += maxChartAreaWidth;
6636		top += maxChartAreaHeight;
6637
6638		helpers.each(rightBoxes, placeBox);
6639		helpers.each(bottomBoxes, placeBox);
6640
6641		// Step 8
6642		chart.chartArea = {
6643			left: totalLeftBoxesWidth,
6644			top: totalTopBoxesHeight,
6645			right: totalLeftBoxesWidth + maxChartAreaWidth,
6646			bottom: totalTopBoxesHeight + maxChartAreaHeight
6647		};
6648
6649		// Step 9
6650		helpers.each(chartAreaBoxes, function(box) {
6651			box.left = chart.chartArea.left;
6652			box.top = chart.chartArea.top;
6653			box.right = chart.chartArea.right;
6654			box.bottom = chart.chartArea.bottom;
6655
6656			box.update(maxChartAreaWidth, maxChartAreaHeight);
6657		});
6658	}
6659};
6660
6661},{"46":46}],32:[function(require,module,exports){
6662'use strict';
6663
6664var defaults = require(26);
6665var helpers = require(46);
6666
6667defaults._set('global', {
6668	plugins: {}
6669});
6670
6671/**
6672 * The plugin service singleton
6673 * @namespace Chart.plugins
6674 * @since 2.1.0
6675 */
6676module.exports = {
6677	/**
6678	 * Globally registered plugins.
6679	 * @private
6680	 */
6681	_plugins: [],
6682
6683	/**
6684	 * This identifier is used to invalidate the descriptors cache attached to each chart
6685	 * when a global plugin is registered or unregistered. In this case, the cache ID is
6686	 * incremented and descriptors are regenerated during following API calls.
6687	 * @private
6688	 */
6689	_cacheId: 0,
6690
6691	/**
6692	 * Registers the given plugin(s) if not already registered.
6693	 * @param {Array|Object} plugins plugin instance(s).
6694	 */
6695	register: function(plugins) {
6696		var p = this._plugins;
6697		([]).concat(plugins).forEach(function(plugin) {
6698			if (p.indexOf(plugin) === -1) {
6699				p.push(plugin);
6700			}
6701		});
6702
6703		this._cacheId++;
6704	},
6705
6706	/**
6707	 * Unregisters the given plugin(s) only if registered.
6708	 * @param {Array|Object} plugins plugin instance(s).
6709	 */
6710	unregister: function(plugins) {
6711		var p = this._plugins;
6712		([]).concat(plugins).forEach(function(plugin) {
6713			var idx = p.indexOf(plugin);
6714			if (idx !== -1) {
6715				p.splice(idx, 1);
6716			}
6717		});
6718
6719		this._cacheId++;
6720	},
6721
6722	/**
6723	 * Remove all registered plugins.
6724	 * @since 2.1.5
6725	 */
6726	clear: function() {
6727		this._plugins = [];
6728		this._cacheId++;
6729	},
6730
6731	/**
6732	 * Returns the number of registered plugins?
6733	 * @returns {Number}
6734	 * @since 2.1.5
6735	 */
6736	count: function() {
6737		return this._plugins.length;
6738	},
6739
6740	/**
6741	 * Returns all registered plugin instances.
6742	 * @returns {Array} array of plugin objects.
6743	 * @since 2.1.5
6744	 */
6745	getAll: function() {
6746		return this._plugins;
6747	},
6748
6749	/**
6750	 * Calls enabled plugins for `chart` on the specified hook and with the given args.
6751	 * This method immediately returns as soon as a plugin explicitly returns false. The
6752	 * returned value can be used, for instance, to interrupt the current action.
6753	 * @param {Object} chart - The chart instance for which plugins should be called.
6754	 * @param {String} hook - The name of the plugin method to call (e.g. 'beforeUpdate').
6755	 * @param {Array} [args] - Extra arguments to apply to the hook call.
6756	 * @returns {Boolean} false if any of the plugins return false, else returns true.
6757	 */
6758	notify: function(chart, hook, args) {
6759		var descriptors = this.descriptors(chart);
6760		var ilen = descriptors.length;
6761		var i, descriptor, plugin, params, method;
6762
6763		for (i = 0; i < ilen; ++i) {
6764			descriptor = descriptors[i];
6765			plugin = descriptor.plugin;
6766			method = plugin[hook];
6767			if (typeof method === 'function') {
6768				params = [chart].concat(args || []);
6769				params.push(descriptor.options);
6770				if (method.apply(plugin, params) === false) {
6771					return false;
6772				}
6773			}
6774		}
6775
6776		return true;
6777	},
6778
6779	/**
6780	 * Returns descriptors of enabled plugins for the given chart.
6781	 * @returns {Array} [{ plugin, options }]
6782	 * @private
6783	 */
6784	descriptors: function(chart) {
6785		var cache = chart.$plugins || (chart.$plugins = {});
6786		if (cache.id === this._cacheId) {
6787			return cache.descriptors;
6788		}
6789
6790		var plugins = [];
6791		var descriptors = [];
6792		var config = (chart && chart.config) || {};
6793		var options = (config.options && config.options.plugins) || {};
6794
6795		this._plugins.concat(config.plugins || []).forEach(function(plugin) {
6796			var idx = plugins.indexOf(plugin);
6797			if (idx !== -1) {
6798				return;
6799			}
6800
6801			var id = plugin.id;
6802			var opts = options[id];
6803			if (opts === false) {
6804				return;
6805			}
6806
6807			if (opts === true) {
6808				opts = helpers.clone(defaults.global.plugins[id]);
6809			}
6810
6811			plugins.push(plugin);
6812			descriptors.push({
6813				plugin: plugin,
6814				options: opts || {}
6815			});
6816		});
6817
6818		cache.descriptors = descriptors;
6819		cache.id = this._cacheId;
6820		return descriptors;
6821	},
6822
6823	/**
6824	 * Invalidates cache for the given chart: descriptors hold a reference on plugin option,
6825	 * but in some cases, this reference can be changed by the user when updating options.
6826	 * https://github.com/chartjs/Chart.js/issues/5111#issuecomment-355934167
6827	 * @private
6828	 */
6829	_invalidate: function(chart) {
6830		delete chart.$plugins;
6831	}
6832};
6833
6834/**
6835 * Plugin extension hooks.
6836 * @interface IPlugin
6837 * @since 2.1.0
6838 */
6839/**
6840 * @method IPlugin#beforeInit
6841 * @desc Called before initializing `chart`.
6842 * @param {Chart.Controller} chart - The chart instance.
6843 * @param {Object} options - The plugin options.
6844 */
6845/**
6846 * @method IPlugin#afterInit
6847 * @desc Called after `chart` has been initialized and before the first update.
6848 * @param {Chart.Controller} chart - The chart instance.
6849 * @param {Object} options - The plugin options.
6850 */
6851/**
6852 * @method IPlugin#beforeUpdate
6853 * @desc Called before updating `chart`. If any plugin returns `false`, the update
6854 * is cancelled (and thus subsequent render(s)) until another `update` is triggered.
6855 * @param {Chart.Controller} chart - The chart instance.
6856 * @param {Object} options - The plugin options.
6857 * @returns {Boolean} `false` to cancel the chart update.
6858 */
6859/**
6860 * @method IPlugin#afterUpdate
6861 * @desc Called after `chart` has been updated and before rendering. Note that this
6862 * hook will not be called if the chart update has been previously cancelled.
6863 * @param {Chart.Controller} chart - The chart instance.
6864 * @param {Object} options - The plugin options.
6865 */
6866/**
6867 * @method IPlugin#beforeDatasetsUpdate
6868 * @desc Called before updating the `chart` datasets. If any plugin returns `false`,
6869 * the datasets update is cancelled until another `update` is triggered.
6870 * @param {Chart.Controller} chart - The chart instance.
6871 * @param {Object} options - The plugin options.
6872 * @returns {Boolean} false to cancel the datasets update.
6873 * @since version 2.1.5
6874*/
6875/**
6876 * @method IPlugin#afterDatasetsUpdate
6877 * @desc Called after the `chart` datasets have been updated. Note that this hook
6878 * will not be called if the datasets update has been previously cancelled.
6879 * @param {Chart.Controller} chart - The chart instance.
6880 * @param {Object} options - The plugin options.
6881 * @since version 2.1.5
6882 */
6883/**
6884 * @method IPlugin#beforeDatasetUpdate
6885 * @desc Called before updating the `chart` dataset at the given `args.index`. If any plugin
6886 * returns `false`, the datasets update is cancelled until another `update` is triggered.
6887 * @param {Chart} chart - The chart instance.
6888 * @param {Object} args - The call arguments.
6889 * @param {Number} args.index - The dataset index.
6890 * @param {Object} args.meta - The dataset metadata.
6891 * @param {Object} options - The plugin options.
6892 * @returns {Boolean} `false` to cancel the chart datasets drawing.
6893 */
6894/**
6895 * @method IPlugin#afterDatasetUpdate
6896 * @desc Called after the `chart` datasets at the given `args.index` has been updated. Note
6897 * that this hook will not be called if the datasets update has been previously cancelled.
6898 * @param {Chart} chart - The chart instance.
6899 * @param {Object} args - The call arguments.
6900 * @param {Number} args.index - The dataset index.
6901 * @param {Object} args.meta - The dataset metadata.
6902 * @param {Object} options - The plugin options.
6903 */
6904/**
6905 * @method IPlugin#beforeLayout
6906 * @desc Called before laying out `chart`. If any plugin returns `false`,
6907 * the layout update is cancelled until another `update` is triggered.
6908 * @param {Chart.Controller} chart - The chart instance.
6909 * @param {Object} options - The plugin options.
6910 * @returns {Boolean} `false` to cancel the chart layout.
6911 */
6912/**
6913 * @method IPlugin#afterLayout
6914 * @desc Called after the `chart` has been layed out. Note that this hook will not
6915 * be called if the layout update has been previously cancelled.
6916 * @param {Chart.Controller} chart - The chart instance.
6917 * @param {Object} options - The plugin options.
6918 */
6919/**
6920 * @method IPlugin#beforeRender
6921 * @desc Called before rendering `chart`. If any plugin returns `false`,
6922 * the rendering is cancelled until another `render` is triggered.
6923 * @param {Chart.Controller} chart - The chart instance.
6924 * @param {Object} options - The plugin options.
6925 * @returns {Boolean} `false` to cancel the chart rendering.
6926 */
6927/**
6928 * @method IPlugin#afterRender
6929 * @desc Called after the `chart` has been fully rendered (and animation completed). Note
6930 * that this hook will not be called if the rendering has been previously cancelled.
6931 * @param {Chart.Controller} chart - The chart instance.
6932 * @param {Object} options - The plugin options.
6933 */
6934/**
6935 * @method IPlugin#beforeDraw
6936 * @desc Called before drawing `chart` at every animation frame specified by the given
6937 * easing value. If any plugin returns `false`, the frame drawing is cancelled until
6938 * another `render` is triggered.
6939 * @param {Chart.Controller} chart - The chart instance.
6940 * @param {Number} easingValue - The current animation value, between 0.0 and 1.0.
6941 * @param {Object} options - The plugin options.
6942 * @returns {Boolean} `false` to cancel the chart drawing.
6943 */
6944/**
6945 * @method IPlugin#afterDraw
6946 * @desc Called after the `chart` has been drawn for the specific easing value. Note
6947 * that this hook will not be called if the drawing has been previously cancelled.
6948 * @param {Chart.Controller} chart - The chart instance.
6949 * @param {Number} easingValue - The current animation value, between 0.0 and 1.0.
6950 * @param {Object} options - The plugin options.
6951 */
6952/**
6953 * @method IPlugin#beforeDatasetsDraw
6954 * @desc Called before drawing the `chart` datasets. If any plugin returns `false`,
6955 * the datasets drawing is cancelled until another `render` is triggered.
6956 * @param {Chart.Controller} chart - The chart instance.
6957 * @param {Number} easingValue - The current animation value, between 0.0 and 1.0.
6958 * @param {Object} options - The plugin options.
6959 * @returns {Boolean} `false` to cancel the chart datasets drawing.
6960 */
6961/**
6962 * @method IPlugin#afterDatasetsDraw
6963 * @desc Called after the `chart` datasets have been drawn. Note that this hook
6964 * will not be called if the datasets drawing has been previously cancelled.
6965 * @param {Chart.Controller} chart - The chart instance.
6966 * @param {Number} easingValue - The current animation value, between 0.0 and 1.0.
6967 * @param {Object} options - The plugin options.
6968 */
6969/**
6970 * @method IPlugin#beforeDatasetDraw
6971 * @desc Called before drawing the `chart` dataset at the given `args.index` (datasets
6972 * are drawn in the reverse order). If any plugin returns `false`, the datasets drawing
6973 * is cancelled until another `render` is triggered.
6974 * @param {Chart} chart - The chart instance.
6975 * @param {Object} args - The call arguments.
6976 * @param {Number} args.index - The dataset index.
6977 * @param {Object} args.meta - The dataset metadata.
6978 * @param {Number} args.easingValue - The current animation value, between 0.0 and 1.0.
6979 * @param {Object} options - The plugin options.
6980 * @returns {Boolean} `false` to cancel the chart datasets drawing.
6981 */
6982/**
6983 * @method IPlugin#afterDatasetDraw
6984 * @desc Called after the `chart` datasets at the given `args.index` have been drawn
6985 * (datasets are drawn in the reverse order). Note that this hook will not be called
6986 * if the datasets drawing has been previously cancelled.
6987 * @param {Chart} chart - The chart instance.
6988 * @param {Object} args - The call arguments.
6989 * @param {Number} args.index - The dataset index.
6990 * @param {Object} args.meta - The dataset metadata.
6991 * @param {Number} args.easingValue - The current animation value, between 0.0 and 1.0.
6992 * @param {Object} options - The plugin options.
6993 */
6994/**
6995 * @method IPlugin#beforeTooltipDraw
6996 * @desc Called before drawing the `tooltip`. If any plugin returns `false`,
6997 * the tooltip drawing is cancelled until another `render` is triggered.
6998 * @param {Chart} chart - The chart instance.
6999 * @param {Object} args - The call arguments.
7000 * @param {Object} args.tooltip - The tooltip.
7001 * @param {Number} args.easingValue - The current animation value, between 0.0 and 1.0.
7002 * @param {Object} options - The plugin options.
7003 * @returns {Boolean} `false` to cancel the chart tooltip drawing.
7004 */
7005/**
7006 * @method IPlugin#afterTooltipDraw
7007 * @desc Called after drawing the `tooltip`. Note that this hook will not
7008 * be called if the tooltip drawing has been previously cancelled.
7009 * @param {Chart} chart - The chart instance.
7010 * @param {Object} args - The call arguments.
7011 * @param {Object} args.tooltip - The tooltip.
7012 * @param {Number} args.easingValue - The current animation value, between 0.0 and 1.0.
7013 * @param {Object} options - The plugin options.
7014 */
7015/**
7016 * @method IPlugin#beforeEvent
7017 * @desc Called before processing the specified `event`. If any plugin returns `false`,
7018 * the event will be discarded.
7019 * @param {Chart.Controller} chart - The chart instance.
7020 * @param {IEvent} event - The event object.
7021 * @param {Object} options - The plugin options.
7022 */
7023/**
7024 * @method IPlugin#afterEvent
7025 * @desc Called after the `event` has been consumed. Note that this hook
7026 * will not be called if the `event` has been previously discarded.
7027 * @param {Chart.Controller} chart - The chart instance.
7028 * @param {IEvent} event - The event object.
7029 * @param {Object} options - The plugin options.
7030 */
7031/**
7032 * @method IPlugin#resize
7033 * @desc Called after the chart as been resized.
7034 * @param {Chart.Controller} chart - The chart instance.
7035 * @param {Number} size - The new canvas display size (eq. canvas.style width & height).
7036 * @param {Object} options - The plugin options.
7037 */
7038/**
7039 * @method IPlugin#destroy
7040 * @desc Called after the chart as been destroyed.
7041 * @param {Chart.Controller} chart - The chart instance.
7042 * @param {Object} options - The plugin options.
7043 */
7044
7045},{"26":26,"46":46}],33:[function(require,module,exports){
7046'use strict';
7047
7048var defaults = require(26);
7049var Element = require(27);
7050var helpers = require(46);
7051var Ticks = require(35);
7052
7053defaults._set('scale', {
7054	display: true,
7055	position: 'left',
7056	offset: false,
7057
7058	// grid line settings
7059	gridLines: {
7060		display: true,
7061		color: 'rgba(0, 0, 0, 0.1)',
7062		lineWidth: 1,
7063		drawBorder: true,
7064		drawOnChartArea: true,
7065		drawTicks: true,
7066		tickMarkLength: 10,
7067		zeroLineWidth: 1,
7068		zeroLineColor: 'rgba(0,0,0,0.25)',
7069		zeroLineBorderDash: [],
7070		zeroLineBorderDashOffset: 0.0,
7071		offsetGridLines: false,
7072		borderDash: [],
7073		borderDashOffset: 0.0
7074	},
7075
7076	// scale label
7077	scaleLabel: {
7078		// display property
7079		display: false,
7080
7081		// actual label
7082		labelString: '',
7083
7084		// line height
7085		lineHeight: 1.2,
7086
7087		// top/bottom padding
7088		padding: {
7089			top: 4,
7090			bottom: 4
7091		}
7092	},
7093
7094	// label settings
7095	ticks: {
7096		beginAtZero: false,
7097		minRotation: 0,
7098		maxRotation: 50,
7099		mirror: false,
7100		padding: 0,
7101		reverse: false,
7102		display: true,
7103		autoSkip: true,
7104		autoSkipPadding: 0,
7105		labelOffset: 0,
7106		// We pass through arrays to be rendered as multiline labels, we convert Others to strings here.
7107		callback: Ticks.formatters.values,
7108		minor: {},
7109		major: {}
7110	}
7111});
7112
7113function labelsFromTicks(ticks) {
7114	var labels = [];
7115	var i, ilen;
7116
7117	for (i = 0, ilen = ticks.length; i < ilen; ++i) {
7118		labels.push(ticks[i].label);
7119	}
7120
7121	return labels;
7122}
7123
7124function getLineValue(scale, index, offsetGridLines) {
7125	var lineValue = scale.getPixelForTick(index);
7126
7127	if (offsetGridLines) {
7128		if (index === 0) {
7129			lineValue -= (scale.getPixelForTick(1) - lineValue) / 2;
7130		} else {
7131			lineValue -= (lineValue - scale.getPixelForTick(index - 1)) / 2;
7132		}
7133	}
7134	return lineValue;
7135}
7136
7137function computeTextSize(context, tick, font) {
7138	return helpers.isArray(tick) ?
7139		helpers.longestText(context, font, tick) :
7140		context.measureText(tick).width;
7141}
7142
7143function parseFontOptions(options) {
7144	var valueOrDefault = helpers.valueOrDefault;
7145	var globalDefaults = defaults.global;
7146	var size = valueOrDefault(options.fontSize, globalDefaults.defaultFontSize);
7147	var style = valueOrDefault(options.fontStyle, globalDefaults.defaultFontStyle);
7148	var family = valueOrDefault(options.fontFamily, globalDefaults.defaultFontFamily);
7149
7150	return {
7151		size: size,
7152		style: style,
7153		family: family,
7154		font: helpers.fontString(size, style, family)
7155	};
7156}
7157
7158function parseLineHeight(options) {
7159	return helpers.options.toLineHeight(
7160		helpers.valueOrDefault(options.lineHeight, 1.2),
7161		helpers.valueOrDefault(options.fontSize, defaults.global.defaultFontSize));
7162}
7163
7164module.exports = Element.extend({
7165	/**
7166	 * Get the padding needed for the scale
7167	 * @method getPadding
7168	 * @private
7169	 * @returns {Padding} the necessary padding
7170	 */
7171	getPadding: function() {
7172		var me = this;
7173		return {
7174			left: me.paddingLeft || 0,
7175			top: me.paddingTop || 0,
7176			right: me.paddingRight || 0,
7177			bottom: me.paddingBottom || 0
7178		};
7179	},
7180
7181	/**
7182	 * Returns the scale tick objects ({label, major})
7183	 * @since 2.7
7184	 */
7185	getTicks: function() {
7186		return this._ticks;
7187	},
7188
7189	// These methods are ordered by lifecyle. Utilities then follow.
7190	// Any function defined here is inherited by all scale types.
7191	// Any function can be extended by the scale type
7192
7193	mergeTicksOptions: function() {
7194		var ticks = this.options.ticks;
7195		if (ticks.minor === false) {
7196			ticks.minor = {
7197				display: false
7198			};
7199		}
7200		if (ticks.major === false) {
7201			ticks.major = {
7202				display: false
7203			};
7204		}
7205		for (var key in ticks) {
7206			if (key !== 'major' && key !== 'minor') {
7207				if (typeof ticks.minor[key] === 'undefined') {
7208					ticks.minor[key] = ticks[key];
7209				}
7210				if (typeof ticks.major[key] === 'undefined') {
7211					ticks.major[key] = ticks[key];
7212				}
7213			}
7214		}
7215	},
7216	beforeUpdate: function() {
7217		helpers.callback(this.options.beforeUpdate, [this]);
7218	},
7219
7220	update: function(maxWidth, maxHeight, margins) {
7221		var me = this;
7222		var i, ilen, labels, label, ticks, tick;
7223
7224		// Update Lifecycle - Probably don't want to ever extend or overwrite this function ;)
7225		me.beforeUpdate();
7226
7227		// Absorb the master measurements
7228		me.maxWidth = maxWidth;
7229		me.maxHeight = maxHeight;
7230		me.margins = helpers.extend({
7231			left: 0,
7232			right: 0,
7233			top: 0,
7234			bottom: 0
7235		}, margins);
7236		me.longestTextCache = me.longestTextCache || {};
7237
7238		// Dimensions
7239		me.beforeSetDimensions();
7240		me.setDimensions();
7241		me.afterSetDimensions();
7242
7243		// Data min/max
7244		me.beforeDataLimits();
7245		me.determineDataLimits();
7246		me.afterDataLimits();
7247
7248		// Ticks - `this.ticks` is now DEPRECATED!
7249		// Internal ticks are now stored as objects in the PRIVATE `this._ticks` member
7250		// and must not be accessed directly from outside this class. `this.ticks` being
7251		// around for long time and not marked as private, we can't change its structure
7252		// without unexpected breaking changes. If you need to access the scale ticks,
7253		// use scale.getTicks() instead.
7254
7255		me.beforeBuildTicks();
7256
7257		// New implementations should return an array of objects but for BACKWARD COMPAT,
7258		// we still support no return (`this.ticks` internally set by calling this method).
7259		ticks = me.buildTicks() || [];
7260
7261		me.afterBuildTicks();
7262
7263		me.beforeTickToLabelConversion();
7264
7265		// New implementations should return the formatted tick labels but for BACKWARD
7266		// COMPAT, we still support no return (`this.ticks` internally changed by calling
7267		// this method and supposed to contain only string values).
7268		labels = me.convertTicksToLabels(ticks) || me.ticks;
7269
7270		me.afterTickToLabelConversion();
7271
7272		me.ticks = labels;   // BACKWARD COMPATIBILITY
7273
7274		// IMPORTANT: from this point, we consider that `this.ticks` will NEVER change!
7275
7276		// BACKWARD COMPAT: synchronize `_ticks` with labels (so potentially `this.ticks`)
7277		for (i = 0, ilen = labels.length; i < ilen; ++i) {
7278			label = labels[i];
7279			tick = ticks[i];
7280			if (!tick) {
7281				ticks.push(tick = {
7282					label: label,
7283					major: false
7284				});
7285			} else {
7286				tick.label = label;
7287			}
7288		}
7289
7290		me._ticks = ticks;
7291
7292		// Tick Rotation
7293		me.beforeCalculateTickRotation();
7294		me.calculateTickRotation();
7295		me.afterCalculateTickRotation();
7296		// Fit
7297		me.beforeFit();
7298		me.fit();
7299		me.afterFit();
7300		//
7301		me.afterUpdate();
7302
7303		return me.minSize;
7304
7305	},
7306	afterUpdate: function() {
7307		helpers.callback(this.options.afterUpdate, [this]);
7308	},
7309
7310	//
7311
7312	beforeSetDimensions: function() {
7313		helpers.callback(this.options.beforeSetDimensions, [this]);
7314	},
7315	setDimensions: function() {
7316		var me = this;
7317		// Set the unconstrained dimension before label rotation
7318		if (me.isHorizontal()) {
7319			// Reset position before calculating rotation
7320			me.width = me.maxWidth;
7321			me.left = 0;
7322			me.right = me.width;
7323		} else {
7324			me.height = me.maxHeight;
7325
7326			// Reset position before calculating rotation
7327			me.top = 0;
7328			me.bottom = me.height;
7329		}
7330
7331		// Reset padding
7332		me.paddingLeft = 0;
7333		me.paddingTop = 0;
7334		me.paddingRight = 0;
7335		me.paddingBottom = 0;
7336	},
7337	afterSetDimensions: function() {
7338		helpers.callback(this.options.afterSetDimensions, [this]);
7339	},
7340
7341	// Data limits
7342	beforeDataLimits: function() {
7343		helpers.callback(this.options.beforeDataLimits, [this]);
7344	},
7345	determineDataLimits: helpers.noop,
7346	afterDataLimits: function() {
7347		helpers.callback(this.options.afterDataLimits, [this]);
7348	},
7349
7350	//
7351	beforeBuildTicks: function() {
7352		helpers.callback(this.options.beforeBuildTicks, [this]);
7353	},
7354	buildTicks: helpers.noop,
7355	afterBuildTicks: function() {
7356		helpers.callback(this.options.afterBuildTicks, [this]);
7357	},
7358
7359	beforeTickToLabelConversion: function() {
7360		helpers.callback(this.options.beforeTickToLabelConversion, [this]);
7361	},
7362	convertTicksToLabels: function() {
7363		var me = this;
7364		// Convert ticks to strings
7365		var tickOpts = me.options.ticks;
7366		me.ticks = me.ticks.map(tickOpts.userCallback || tickOpts.callback, this);
7367	},
7368	afterTickToLabelConversion: function() {
7369		helpers.callback(this.options.afterTickToLabelConversion, [this]);
7370	},
7371
7372	//
7373
7374	beforeCalculateTickRotation: function() {
7375		helpers.callback(this.options.beforeCalculateTickRotation, [this]);
7376	},
7377	calculateTickRotation: function() {
7378		var me = this;
7379		var context = me.ctx;
7380		var tickOpts = me.options.ticks;
7381		var labels = labelsFromTicks(me._ticks);
7382
7383		// Get the width of each grid by calculating the difference
7384		// between x offsets between 0 and 1.
7385		var tickFont = parseFontOptions(tickOpts);
7386		context.font = tickFont.font;
7387
7388		var labelRotation = tickOpts.minRotation || 0;
7389
7390		if (labels.length && me.options.display && me.isHorizontal()) {
7391			var originalLabelWidth = helpers.longestText(context, tickFont.font, labels, me.longestTextCache);
7392			var labelWidth = originalLabelWidth;
7393			var cosRotation, sinRotation;
7394
7395			// Allow 3 pixels x2 padding either side for label readability
7396			var tickWidth = me.getPixelForTick(1) - me.getPixelForTick(0) - 6;
7397
7398			// Max label rotation can be set or default to 90 - also act as a loop counter
7399			while (labelWidth > tickWidth && labelRotation < tickOpts.maxRotation) {
7400				var angleRadians = helpers.toRadians(labelRotation);
7401				cosRotation = Math.cos(angleRadians);
7402				sinRotation = Math.sin(angleRadians);
7403
7404				if (sinRotation * originalLabelWidth > me.maxHeight) {
7405					// go back one step
7406					labelRotation--;
7407					break;
7408				}
7409
7410				labelRotation++;
7411				labelWidth = cosRotation * originalLabelWidth;
7412			}
7413		}
7414
7415		me.labelRotation = labelRotation;
7416	},
7417	afterCalculateTickRotation: function() {
7418		helpers.callback(this.options.afterCalculateTickRotation, [this]);
7419	},
7420
7421	//
7422
7423	beforeFit: function() {
7424		helpers.callback(this.options.beforeFit, [this]);
7425	},
7426	fit: function() {
7427		var me = this;
7428		// Reset
7429		var minSize = me.minSize = {
7430			width: 0,
7431			height: 0
7432		};
7433
7434		var labels = labelsFromTicks(me._ticks);
7435
7436		var opts = me.options;
7437		var tickOpts = opts.ticks;
7438		var scaleLabelOpts = opts.scaleLabel;
7439		var gridLineOpts = opts.gridLines;
7440		var display = opts.display;
7441		var isHorizontal = me.isHorizontal();
7442
7443		var tickFont = parseFontOptions(tickOpts);
7444		var tickMarkLength = opts.gridLines.tickMarkLength;
7445
7446		// Width
7447		if (isHorizontal) {
7448			// subtract the margins to line up with the chartArea if we are a full width scale
7449			minSize.width = me.isFullWidth() ? me.maxWidth - me.margins.left - me.margins.right : me.maxWidth;
7450		} else {
7451			minSize.width = display && gridLineOpts.drawTicks ? tickMarkLength : 0;
7452		}
7453
7454		// height
7455		if (isHorizontal) {
7456			minSize.height = display && gridLineOpts.drawTicks ? tickMarkLength : 0;
7457		} else {
7458			minSize.height = me.maxHeight; // fill all the height
7459		}
7460
7461		// Are we showing a title for the scale?
7462		if (scaleLabelOpts.display && display) {
7463			var scaleLabelLineHeight = parseLineHeight(scaleLabelOpts);
7464			var scaleLabelPadding = helpers.options.toPadding(scaleLabelOpts.padding);
7465			var deltaHeight = scaleLabelLineHeight + scaleLabelPadding.height;
7466
7467			if (isHorizontal) {
7468				minSize.height += deltaHeight;
7469			} else {
7470				minSize.width += deltaHeight;
7471			}
7472		}
7473
7474		// Don't bother fitting the ticks if we are not showing them
7475		if (tickOpts.display && display) {
7476			var largestTextWidth = helpers.longestText(me.ctx, tickFont.font, labels, me.longestTextCache);
7477			var tallestLabelHeightInLines = helpers.numberOfLabelLines(labels);
7478			var lineSpace = tickFont.size * 0.5;
7479			var tickPadding = me.options.ticks.padding;
7480
7481			if (isHorizontal) {
7482				// A horizontal axis is more constrained by the height.
7483				me.longestLabelWidth = largestTextWidth;
7484
7485				var angleRadians = helpers.toRadians(me.labelRotation);
7486				var cosRotation = Math.cos(angleRadians);
7487				var sinRotation = Math.sin(angleRadians);
7488
7489				// TODO - improve this calculation
7490				var labelHeight = (sinRotation * largestTextWidth)
7491					+ (tickFont.size * tallestLabelHeightInLines)
7492					+ (lineSpace * (tallestLabelHeightInLines - 1))
7493					+ lineSpace; // padding
7494
7495				minSize.height = Math.min(me.maxHeight, minSize.height + labelHeight + tickPadding);
7496
7497				me.ctx.font = tickFont.font;
7498				var firstLabelWidth = computeTextSize(me.ctx, labels[0], tickFont.font);
7499				var lastLabelWidth = computeTextSize(me.ctx, labels[labels.length - 1], tickFont.font);
7500
7501				// Ensure that our ticks are always inside the canvas. When rotated, ticks are right aligned
7502				// which means that the right padding is dominated by the font height
7503				if (me.labelRotation !== 0) {
7504					me.paddingLeft = opts.position === 'bottom' ? (cosRotation * firstLabelWidth) + 3 : (cosRotation * lineSpace) + 3; // add 3 px to move away from canvas edges
7505					me.paddingRight = opts.position === 'bottom' ? (cosRotation * lineSpace) + 3 : (cosRotation * lastLabelWidth) + 3;
7506				} else {
7507					me.paddingLeft = firstLabelWidth / 2 + 3; // add 3 px to move away from canvas edges
7508					me.paddingRight = lastLabelWidth / 2 + 3;
7509				}
7510			} else {
7511				// A vertical axis is more constrained by the width. Labels are the
7512				// dominant factor here, so get that length first and account for padding
7513				if (tickOpts.mirror) {
7514					largestTextWidth = 0;
7515				} else {
7516					// use lineSpace for consistency with horizontal axis
7517					// tickPadding is not implemented for horizontal
7518					largestTextWidth += tickPadding + lineSpace;
7519				}
7520
7521				minSize.width = Math.min(me.maxWidth, minSize.width + largestTextWidth);
7522
7523				me.paddingTop = tickFont.size / 2;
7524				me.paddingBottom = tickFont.size / 2;
7525			}
7526		}
7527
7528		me.handleMargins();
7529
7530		me.width = minSize.width;
7531		me.height = minSize.height;
7532	},
7533
7534	/**
7535	 * Handle margins and padding interactions
7536	 * @private
7537	 */
7538	handleMargins: function() {
7539		var me = this;
7540		if (me.margins) {
7541			me.paddingLeft = Math.max(me.paddingLeft - me.margins.left, 0);
7542			me.paddingTop = Math.max(me.paddingTop - me.margins.top, 0);
7543			me.paddingRight = Math.max(me.paddingRight - me.margins.right, 0);
7544			me.paddingBottom = Math.max(me.paddingBottom - me.margins.bottom, 0);
7545		}
7546	},
7547
7548	afterFit: function() {
7549		helpers.callback(this.options.afterFit, [this]);
7550	},
7551
7552	// Shared Methods
7553	isHorizontal: function() {
7554		return this.options.position === 'top' || this.options.position === 'bottom';
7555	},
7556	isFullWidth: function() {
7557		return (this.options.fullWidth);
7558	},
7559
7560	// Get the correct value. NaN bad inputs, If the value type is object get the x or y based on whether we are horizontal or not
7561	getRightValue: function(rawValue) {
7562		// Null and undefined values first
7563		if (helpers.isNullOrUndef(rawValue)) {
7564			return NaN;
7565		}
7566		// isNaN(object) returns true, so make sure NaN is checking for a number; Discard Infinite values
7567		if (typeof rawValue === 'number' && !isFinite(rawValue)) {
7568			return NaN;
7569		}
7570		// If it is in fact an object, dive in one more level
7571		if (rawValue) {
7572			if (this.isHorizontal()) {
7573				if (rawValue.x !== undefined) {
7574					return this.getRightValue(rawValue.x);
7575				}
7576			} else if (rawValue.y !== undefined) {
7577				return this.getRightValue(rawValue.y);
7578			}
7579		}
7580
7581		// Value is good, return it
7582		return rawValue;
7583	},
7584
7585	/**
7586	 * Used to get the value to display in the tooltip for the data at the given index
7587	 * @param index
7588	 * @param datasetIndex
7589	 */
7590	getLabelForIndex: helpers.noop,
7591
7592	/**
7593	 * Returns the location of the given data point. Value can either be an index or a numerical value
7594	 * The coordinate (0, 0) is at the upper-left corner of the canvas
7595	 * @param value
7596	 * @param index
7597	 * @param datasetIndex
7598	 */
7599	getPixelForValue: helpers.noop,
7600
7601	/**
7602	 * Used to get the data value from a given pixel. This is the inverse of getPixelForValue
7603	 * The coordinate (0, 0) is at the upper-left corner of the canvas
7604	 * @param pixel
7605	 */
7606	getValueForPixel: helpers.noop,
7607
7608	/**
7609	 * Returns the location of the tick at the given index
7610	 * The coordinate (0, 0) is at the upper-left corner of the canvas
7611	 */
7612	getPixelForTick: function(index) {
7613		var me = this;
7614		var offset = me.options.offset;
7615		if (me.isHorizontal()) {
7616			var innerWidth = me.width - (me.paddingLeft + me.paddingRight);
7617			var tickWidth = innerWidth / Math.max((me._ticks.length - (offset ? 0 : 1)), 1);
7618			var pixel = (tickWidth * index) + me.paddingLeft;
7619
7620			if (offset) {
7621				pixel += tickWidth / 2;
7622			}
7623
7624			var finalVal = me.left + Math.round(pixel);
7625			finalVal += me.isFullWidth() ? me.margins.left : 0;
7626			return finalVal;
7627		}
7628		var innerHeight = me.height - (me.paddingTop + me.paddingBottom);
7629		return me.top + (index * (innerHeight / (me._ticks.length - 1)));
7630	},
7631
7632	/**
7633	 * Utility for getting the pixel location of a percentage of scale
7634	 * The coordinate (0, 0) is at the upper-left corner of the canvas
7635	 */
7636	getPixelForDecimal: function(decimal) {
7637		var me = this;
7638		if (me.isHorizontal()) {
7639			var innerWidth = me.width - (me.paddingLeft + me.paddingRight);
7640			var valueOffset = (innerWidth * decimal) + me.paddingLeft;
7641
7642			var finalVal = me.left + Math.round(valueOffset);
7643			finalVal += me.isFullWidth() ? me.margins.left : 0;
7644			return finalVal;
7645		}
7646		return me.top + (decimal * me.height);
7647	},
7648
7649	/**
7650	 * Returns the pixel for the minimum chart value
7651	 * The coordinate (0, 0) is at the upper-left corner of the canvas
7652	 */
7653	getBasePixel: function() {
7654		return this.getPixelForValue(this.getBaseValue());
7655	},
7656
7657	getBaseValue: function() {
7658		var me = this;
7659		var min = me.min;
7660		var max = me.max;
7661
7662		return me.beginAtZero ? 0 :
7663			min < 0 && max < 0 ? max :
7664			min > 0 && max > 0 ? min :
7665			0;
7666	},
7667
7668	/**
7669	 * Returns a subset of ticks to be plotted to avoid overlapping labels.
7670	 * @private
7671	 */
7672	_autoSkip: function(ticks) {
7673		var skipRatio;
7674		var me = this;
7675		var isHorizontal = me.isHorizontal();
7676		var optionTicks = me.options.ticks.minor;
7677		var tickCount = ticks.length;
7678		var labelRotationRadians = helpers.toRadians(me.labelRotation);
7679		var cosRotation = Math.cos(labelRotationRadians);
7680		var longestRotatedLabel = me.longestLabelWidth * cosRotation;
7681		var result = [];
7682		var i, tick, shouldSkip;
7683
7684		// figure out the maximum number of gridlines to show
7685		var maxTicks;
7686		if (optionTicks.maxTicksLimit) {
7687			maxTicks = optionTicks.maxTicksLimit;
7688		}
7689
7690		if (isHorizontal) {
7691			skipRatio = false;
7692
7693			if ((longestRotatedLabel + optionTicks.autoSkipPadding) * tickCount > (me.width - (me.paddingLeft + me.paddingRight))) {
7694				skipRatio = 1 + Math.floor(((longestRotatedLabel + optionTicks.autoSkipPadding) * tickCount) / (me.width - (me.paddingLeft + me.paddingRight)));
7695			}
7696
7697			// if they defined a max number of optionTicks,
7698			// increase skipRatio until that number is met
7699			if (maxTicks && tickCount > maxTicks) {
7700				skipRatio = Math.max(skipRatio, Math.floor(tickCount / maxTicks));
7701			}
7702		}
7703
7704		for (i = 0; i < tickCount; i++) {
7705			tick = ticks[i];
7706
7707			// Since we always show the last tick,we need may need to hide the last shown one before
7708			shouldSkip = (skipRatio > 1 && i % skipRatio > 0) || (i % skipRatio === 0 && i + skipRatio >= tickCount);
7709			if (shouldSkip && i !== tickCount - 1) {
7710				// leave tick in place but make sure it's not displayed (#4635)
7711				delete tick.label;
7712			}
7713			result.push(tick);
7714		}
7715		return result;
7716	},
7717
7718	// Actually draw the scale on the canvas
7719	// @param {rectangle} chartArea : the area of the chart to draw full grid lines on
7720	draw: function(chartArea) {
7721		var me = this;
7722		var options = me.options;
7723		if (!options.display) {
7724			return;
7725		}
7726
7727		var context = me.ctx;
7728		var globalDefaults = defaults.global;
7729		var optionTicks = options.ticks.minor;
7730		var optionMajorTicks = options.ticks.major || optionTicks;
7731		var gridLines = options.gridLines;
7732		var scaleLabel = options.scaleLabel;
7733
7734		var isRotated = me.labelRotation !== 0;
7735		var isHorizontal = me.isHorizontal();
7736
7737		var ticks = optionTicks.autoSkip ? me._autoSkip(me.getTicks()) : me.getTicks();
7738		var tickFontColor = helpers.valueOrDefault(optionTicks.fontColor, globalDefaults.defaultFontColor);
7739		var tickFont = parseFontOptions(optionTicks);
7740		var majorTickFontColor = helpers.valueOrDefault(optionMajorTicks.fontColor, globalDefaults.defaultFontColor);
7741		var majorTickFont = parseFontOptions(optionMajorTicks);
7742
7743		var tl = gridLines.drawTicks ? gridLines.tickMarkLength : 0;
7744
7745		var scaleLabelFontColor = helpers.valueOrDefault(scaleLabel.fontColor, globalDefaults.defaultFontColor);
7746		var scaleLabelFont = parseFontOptions(scaleLabel);
7747		var scaleLabelPadding = helpers.options.toPadding(scaleLabel.padding);
7748		var labelRotationRadians = helpers.toRadians(me.labelRotation);
7749
7750		var itemsToDraw = [];
7751
7752		var axisWidth = me.options.gridLines.lineWidth;
7753		var xTickStart = options.position === 'right' ? me.right : me.right - axisWidth - tl;
7754		var xTickEnd = options.position === 'right' ? me.right + tl : me.right;
7755		var yTickStart = options.position === 'bottom' ? me.top + axisWidth : me.bottom - tl - axisWidth;
7756		var yTickEnd = options.position === 'bottom' ? me.top + axisWidth + tl : me.bottom + axisWidth;
7757
7758		helpers.each(ticks, function(tick, index) {
7759			// autoskipper skipped this tick (#4635)
7760			if (helpers.isNullOrUndef(tick.label)) {
7761				return;
7762			}
7763
7764			var label = tick.label;
7765			var lineWidth, lineColor, borderDash, borderDashOffset;
7766			if (index === me.zeroLineIndex && options.offset === gridLines.offsetGridLines) {
7767				// Draw the first index specially
7768				lineWidth = gridLines.zeroLineWidth;
7769				lineColor = gridLines.zeroLineColor;
7770				borderDash = gridLines.zeroLineBorderDash;
7771				borderDashOffset = gridLines.zeroLineBorderDashOffset;
7772			} else {
7773				lineWidth = helpers.valueAtIndexOrDefault(gridLines.lineWidth, index);
7774				lineColor = helpers.valueAtIndexOrDefault(gridLines.color, index);
7775				borderDash = helpers.valueOrDefault(gridLines.borderDash, globalDefaults.borderDash);
7776				borderDashOffset = helpers.valueOrDefault(gridLines.borderDashOffset, globalDefaults.borderDashOffset);
7777			}
7778
7779			// Common properties
7780			var tx1, ty1, tx2, ty2, x1, y1, x2, y2, labelX, labelY;
7781			var textAlign = 'middle';
7782			var textBaseline = 'middle';
7783			var tickPadding = optionTicks.padding;
7784
7785			if (isHorizontal) {
7786				var labelYOffset = tl + tickPadding;
7787
7788				if (options.position === 'bottom') {
7789					// bottom
7790					textBaseline = !isRotated ? 'top' : 'middle';
7791					textAlign = !isRotated ? 'center' : 'right';
7792					labelY = me.top + labelYOffset;
7793				} else {
7794					// top
7795					textBaseline = !isRotated ? 'bottom' : 'middle';
7796					textAlign = !isRotated ? 'center' : 'left';
7797					labelY = me.bottom - labelYOffset;
7798				}
7799
7800				var xLineValue = getLineValue(me, index, gridLines.offsetGridLines && ticks.length > 1);
7801				if (xLineValue < me.left) {
7802					lineColor = 'rgba(0,0,0,0)';
7803				}
7804				xLineValue += helpers.aliasPixel(lineWidth);
7805
7806				labelX = me.getPixelForTick(index) + optionTicks.labelOffset; // x values for optionTicks (need to consider offsetLabel option)
7807
7808				tx1 = tx2 = x1 = x2 = xLineValue;
7809				ty1 = yTickStart;
7810				ty2 = yTickEnd;
7811				y1 = chartArea.top;
7812				y2 = chartArea.bottom + axisWidth;
7813			} else {
7814				var isLeft = options.position === 'left';
7815				var labelXOffset;
7816
7817				if (optionTicks.mirror) {
7818					textAlign = isLeft ? 'left' : 'right';
7819					labelXOffset = tickPadding;
7820				} else {
7821					textAlign = isLeft ? 'right' : 'left';
7822					labelXOffset = tl + tickPadding;
7823				}
7824
7825				labelX = isLeft ? me.right - labelXOffset : me.left + labelXOffset;
7826
7827				var yLineValue = getLineValue(me, index, gridLines.offsetGridLines && ticks.length > 1);
7828				if (yLineValue < me.top) {
7829					lineColor = 'rgba(0,0,0,0)';
7830				}
7831				yLineValue += helpers.aliasPixel(lineWidth);
7832
7833				labelY = me.getPixelForTick(index) + optionTicks.labelOffset;
7834
7835				tx1 = xTickStart;
7836				tx2 = xTickEnd;
7837				x1 = chartArea.left;
7838				x2 = chartArea.right + axisWidth;
7839				ty1 = ty2 = y1 = y2 = yLineValue;
7840			}
7841
7842			itemsToDraw.push({
7843				tx1: tx1,
7844				ty1: ty1,
7845				tx2: tx2,
7846				ty2: ty2,
7847				x1: x1,
7848				y1: y1,
7849				x2: x2,
7850				y2: y2,
7851				labelX: labelX,
7852				labelY: labelY,
7853				glWidth: lineWidth,
7854				glColor: lineColor,
7855				glBorderDash: borderDash,
7856				glBorderDashOffset: borderDashOffset,
7857				rotation: -1 * labelRotationRadians,
7858				label: label,
7859				major: tick.major,
7860				textBaseline: textBaseline,
7861				textAlign: textAlign
7862			});
7863		});
7864
7865		// Draw all of the tick labels, tick marks, and grid lines at the correct places
7866		helpers.each(itemsToDraw, function(itemToDraw) {
7867			if (gridLines.display) {
7868				context.save();
7869				context.lineWidth = itemToDraw.glWidth;
7870				context.strokeStyle = itemToDraw.glColor;
7871				if (context.setLineDash) {
7872					context.setLineDash(itemToDraw.glBorderDash);
7873					context.lineDashOffset = itemToDraw.glBorderDashOffset;
7874				}
7875
7876				context.beginPath();
7877
7878				if (gridLines.drawTicks) {
7879					context.moveTo(itemToDraw.tx1, itemToDraw.ty1);
7880					context.lineTo(itemToDraw.tx2, itemToDraw.ty2);
7881				}
7882
7883				if (gridLines.drawOnChartArea) {
7884					context.moveTo(itemToDraw.x1, itemToDraw.y1);
7885					context.lineTo(itemToDraw.x2, itemToDraw.y2);
7886				}
7887
7888				context.stroke();
7889				context.restore();
7890			}
7891
7892			if (optionTicks.display) {
7893				// Make sure we draw text in the correct color and font
7894				context.save();
7895				context.translate(itemToDraw.labelX, itemToDraw.labelY);
7896				context.rotate(itemToDraw.rotation);
7897				context.font = itemToDraw.major ? majorTickFont.font : tickFont.font;
7898				context.fillStyle = itemToDraw.major ? majorTickFontColor : tickFontColor;
7899				context.textBaseline = itemToDraw.textBaseline;
7900				context.textAlign = itemToDraw.textAlign;
7901
7902				var label = itemToDraw.label;
7903				if (helpers.isArray(label)) {
7904					var lineCount = label.length;
7905					var lineHeight = tickFont.size * 1.5;
7906					var y = me.isHorizontal() ? 0 : -lineHeight * (lineCount - 1) / 2;
7907
7908					for (var i = 0; i < lineCount; ++i) {
7909						// We just make sure the multiline element is a string here..
7910						context.fillText('' + label[i], 0, y);
7911						// apply same lineSpacing as calculated @ L#320
7912						y += lineHeight;
7913					}
7914				} else {
7915					context.fillText(label, 0, 0);
7916				}
7917				context.restore();
7918			}
7919		});
7920
7921		if (scaleLabel.display) {
7922			// Draw the scale label
7923			var scaleLabelX;
7924			var scaleLabelY;
7925			var rotation = 0;
7926			var halfLineHeight = parseLineHeight(scaleLabel) / 2;
7927
7928			if (isHorizontal) {
7929				scaleLabelX = me.left + ((me.right - me.left) / 2); // midpoint of the width
7930				scaleLabelY = options.position === 'bottom'
7931					? me.bottom - halfLineHeight - scaleLabelPadding.bottom
7932					: me.top + halfLineHeight + scaleLabelPadding.top;
7933			} else {
7934				var isLeft = options.position === 'left';
7935				scaleLabelX = isLeft
7936					? me.left + halfLineHeight + scaleLabelPadding.top
7937					: me.right - halfLineHeight - scaleLabelPadding.top;
7938				scaleLabelY = me.top + ((me.bottom - me.top) / 2);
7939				rotation = isLeft ? -0.5 * Math.PI : 0.5 * Math.PI;
7940			}
7941
7942			context.save();
7943			context.translate(scaleLabelX, scaleLabelY);
7944			context.rotate(rotation);
7945			context.textAlign = 'center';
7946			context.textBaseline = 'middle';
7947			context.fillStyle = scaleLabelFontColor; // render in correct colour
7948			context.font = scaleLabelFont.font;
7949			context.fillText(scaleLabel.labelString, 0, 0);
7950			context.restore();
7951		}
7952
7953		if (gridLines.drawBorder) {
7954			// Draw the line at the edge of the axis
7955			context.lineWidth = helpers.valueAtIndexOrDefault(gridLines.lineWidth, 0);
7956			context.strokeStyle = helpers.valueAtIndexOrDefault(gridLines.color, 0);
7957			var x1 = me.left;
7958			var x2 = me.right + axisWidth;
7959			var y1 = me.top;
7960			var y2 = me.bottom + axisWidth;
7961
7962			var aliasPixel = helpers.aliasPixel(context.lineWidth);
7963			if (isHorizontal) {
7964				y1 = y2 = options.position === 'top' ? me.bottom : me.top;
7965				y1 += aliasPixel;
7966				y2 += aliasPixel;
7967			} else {
7968				x1 = x2 = options.position === 'left' ? me.right : me.left;
7969				x1 += aliasPixel;
7970				x2 += aliasPixel;
7971			}
7972
7973			context.beginPath();
7974			context.moveTo(x1, y1);
7975			context.lineTo(x2, y2);
7976			context.stroke();
7977		}
7978	}
7979});
7980
7981},{"26":26,"27":27,"35":35,"46":46}],34:[function(require,module,exports){
7982'use strict';
7983
7984var defaults = require(26);
7985var helpers = require(46);
7986var layouts = require(31);
7987
7988module.exports = {
7989	// Scale registration object. Extensions can register new scale types (such as log or DB scales) and then
7990	// use the new chart options to grab the correct scale
7991	constructors: {},
7992	// Use a registration function so that we can move to an ES6 map when we no longer need to support
7993	// old browsers
7994
7995	// Scale config defaults
7996	defaults: {},
7997	registerScaleType: function(type, scaleConstructor, scaleDefaults) {
7998		this.constructors[type] = scaleConstructor;
7999		this.defaults[type] = helpers.clone(scaleDefaults);
8000	},
8001	getScaleConstructor: function(type) {
8002		return this.constructors.hasOwnProperty(type) ? this.constructors[type] : undefined;
8003	},
8004	getScaleDefaults: function(type) {
8005		// Return the scale defaults merged with the global settings so that we always use the latest ones
8006		return this.defaults.hasOwnProperty(type) ? helpers.merge({}, [defaults.scale, this.defaults[type]]) : {};
8007	},
8008	updateScaleDefaults: function(type, additions) {
8009		var me = this;
8010		if (me.defaults.hasOwnProperty(type)) {
8011			me.defaults[type] = helpers.extend(me.defaults[type], additions);
8012		}
8013	},
8014	addScalesToLayout: function(chart) {
8015		// Adds each scale to the chart.boxes array to be sized accordingly
8016		helpers.each(chart.scales, function(scale) {
8017			// Set ILayoutItem parameters for backwards compatibility
8018			scale.fullWidth = scale.options.fullWidth;
8019			scale.position = scale.options.position;
8020			scale.weight = scale.options.weight;
8021			layouts.addBox(chart, scale);
8022		});
8023	}
8024};
8025
8026},{"26":26,"31":31,"46":46}],35:[function(require,module,exports){
8027'use strict';
8028
8029var helpers = require(46);
8030
8031/**
8032 * Namespace to hold static tick generation functions
8033 * @namespace Chart.Ticks
8034 */
8035module.exports = {
8036	/**
8037	 * Namespace to hold formatters for different types of ticks
8038	 * @namespace Chart.Ticks.formatters
8039	 */
8040	formatters: {
8041		/**
8042		 * Formatter for value labels
8043		 * @method Chart.Ticks.formatters.values
8044		 * @param value the value to display
8045		 * @return {String|Array} the label to display
8046		 */
8047		values: function(value) {
8048			return helpers.isArray(value) ? value : '' + value;
8049		},
8050
8051		/**
8052		 * Formatter for linear numeric ticks
8053		 * @method Chart.Ticks.formatters.linear
8054		 * @param tickValue {Number} the value to be formatted
8055		 * @param index {Number} the position of the tickValue parameter in the ticks array
8056		 * @param ticks {Array<Number>} the list of ticks being converted
8057		 * @return {String} string representation of the tickValue parameter
8058		 */
8059		linear: function(tickValue, index, ticks) {
8060			// If we have lots of ticks, don't use the ones
8061			var delta = ticks.length > 3 ? ticks[2] - ticks[1] : ticks[1] - ticks[0];
8062
8063			// If we have a number like 2.5 as the delta, figure out how many decimal places we need
8064			if (Math.abs(delta) > 1) {
8065				if (tickValue !== Math.floor(tickValue)) {
8066					// not an integer
8067					delta = tickValue - Math.floor(tickValue);
8068				}
8069			}
8070
8071			var logDelta = helpers.log10(Math.abs(delta));
8072			var tickString = '';
8073
8074			if (tickValue !== 0) {
8075				var numDecimal = -1 * Math.floor(logDelta);
8076				numDecimal = Math.max(Math.min(numDecimal, 20), 0); // toFixed has a max of 20 decimal places
8077				tickString = tickValue.toFixed(numDecimal);
8078			} else {
8079				tickString = '0'; // never show decimal places for 0
8080			}
8081
8082			return tickString;
8083		},
8084
8085		logarithmic: function(tickValue, index, ticks) {
8086			var remain = tickValue / (Math.pow(10, Math.floor(helpers.log10(tickValue))));
8087
8088			if (tickValue === 0) {
8089				return '0';
8090			} else if (remain === 1 || remain === 2 || remain === 5 || index === 0 || index === ticks.length - 1) {
8091				return tickValue.toExponential();
8092			}
8093			return '';
8094		}
8095	}
8096};
8097
8098},{"46":46}],36:[function(require,module,exports){
8099'use strict';
8100
8101var defaults = require(26);
8102var Element = require(27);
8103var helpers = require(46);
8104
8105defaults._set('global', {
8106	tooltips: {
8107		enabled: true,
8108		custom: null,
8109		mode: 'nearest',
8110		position: 'average',
8111		intersect: true,
8112		backgroundColor: 'rgba(0,0,0,0.8)',
8113		titleFontStyle: 'bold',
8114		titleSpacing: 2,
8115		titleMarginBottom: 6,
8116		titleFontColor: '#fff',
8117		titleAlign: 'left',
8118		bodySpacing: 2,
8119		bodyFontColor: '#fff',
8120		bodyAlign: 'left',
8121		footerFontStyle: 'bold',
8122		footerSpacing: 2,
8123		footerMarginTop: 6,
8124		footerFontColor: '#fff',
8125		footerAlign: 'left',
8126		yPadding: 6,
8127		xPadding: 6,
8128		caretPadding: 2,
8129		caretSize: 5,
8130		cornerRadius: 6,
8131		multiKeyBackground: '#fff',
8132		displayColors: true,
8133		borderColor: 'rgba(0,0,0,0)',
8134		borderWidth: 0,
8135		callbacks: {
8136			// Args are: (tooltipItems, data)
8137			beforeTitle: helpers.noop,
8138			title: function(tooltipItems, data) {
8139				// Pick first xLabel for now
8140				var title = '';
8141				var labels = data.labels;
8142				var labelCount = labels ? labels.length : 0;
8143
8144				if (tooltipItems.length > 0) {
8145					var item = tooltipItems[0];
8146
8147					if (item.xLabel) {
8148						title = item.xLabel;
8149					} else if (labelCount > 0 && item.index < labelCount) {
8150						title = labels[item.index];
8151					}
8152				}
8153
8154				return title;
8155			},
8156			afterTitle: helpers.noop,
8157
8158			// Args are: (tooltipItems, data)
8159			beforeBody: helpers.noop,
8160
8161			// Args are: (tooltipItem, data)
8162			beforeLabel: helpers.noop,
8163			label: function(tooltipItem, data) {
8164				var label = data.datasets[tooltipItem.datasetIndex].label || '';
8165
8166				if (label) {
8167					label += ': ';
8168				}
8169				label += tooltipItem.yLabel;
8170				return label;
8171			},
8172			labelColor: function(tooltipItem, chart) {
8173				var meta = chart.getDatasetMeta(tooltipItem.datasetIndex);
8174				var activeElement = meta.data[tooltipItem.index];
8175				var view = activeElement._view;
8176				return {
8177					borderColor: view.borderColor,
8178					backgroundColor: view.backgroundColor
8179				};
8180			},
8181			labelTextColor: function() {
8182				return this._options.bodyFontColor;
8183			},
8184			afterLabel: helpers.noop,
8185
8186			// Args are: (tooltipItems, data)
8187			afterBody: helpers.noop,
8188
8189			// Args are: (tooltipItems, data)
8190			beforeFooter: helpers.noop,
8191			footer: helpers.noop,
8192			afterFooter: helpers.noop
8193		}
8194	}
8195});
8196
8197var positioners = {
8198	/**
8199	 * Average mode places the tooltip at the average position of the elements shown
8200	 * @function Chart.Tooltip.positioners.average
8201	 * @param elements {ChartElement[]} the elements being displayed in the tooltip
8202	 * @returns {Point} tooltip position
8203	 */
8204	average: function(elements) {
8205		if (!elements.length) {
8206			return false;
8207		}
8208
8209		var i, len;
8210		var x = 0;
8211		var y = 0;
8212		var count = 0;
8213
8214		for (i = 0, len = elements.length; i < len; ++i) {
8215			var el = elements[i];
8216			if (el && el.hasValue()) {
8217				var pos = el.tooltipPosition();
8218				x += pos.x;
8219				y += pos.y;
8220				++count;
8221			}
8222		}
8223
8224		return {
8225			x: Math.round(x / count),
8226			y: Math.round(y / count)
8227		};
8228	},
8229
8230	/**
8231	 * Gets the tooltip position nearest of the item nearest to the event position
8232	 * @function Chart.Tooltip.positioners.nearest
8233	 * @param elements {Chart.Element[]} the tooltip elements
8234	 * @param eventPosition {Point} the position of the event in canvas coordinates
8235	 * @returns {Point} the tooltip position
8236	 */
8237	nearest: function(elements, eventPosition) {
8238		var x = eventPosition.x;
8239		var y = eventPosition.y;
8240		var minDistance = Number.POSITIVE_INFINITY;
8241		var i, len, nearestElement;
8242
8243		for (i = 0, len = elements.length; i < len; ++i) {
8244			var el = elements[i];
8245			if (el && el.hasValue()) {
8246				var center = el.getCenterPoint();
8247				var d = helpers.distanceBetweenPoints(eventPosition, center);
8248
8249				if (d < minDistance) {
8250					minDistance = d;
8251					nearestElement = el;
8252				}
8253			}
8254		}
8255
8256		if (nearestElement) {
8257			var tp = nearestElement.tooltipPosition();
8258			x = tp.x;
8259			y = tp.y;
8260		}
8261
8262		return {
8263			x: x,
8264			y: y
8265		};
8266	}
8267};
8268
8269/**
8270 * Helper method to merge the opacity into a color
8271 */
8272function mergeOpacity(colorString, opacity) {
8273	var color = helpers.color(colorString);
8274	return color.alpha(opacity * color.alpha()).rgbaString();
8275}
8276
8277// Helper to push or concat based on if the 2nd parameter is an array or not
8278function pushOrConcat(base, toPush) {
8279	if (toPush) {
8280		if (helpers.isArray(toPush)) {
8281			// base = base.concat(toPush);
8282			Array.prototype.push.apply(base, toPush);
8283		} else {
8284			base.push(toPush);
8285		}
8286	}
8287
8288	return base;
8289}
8290
8291// Private helper to create a tooltip item model
8292// @param element : the chart element (point, arc, bar) to create the tooltip item for
8293// @return : new tooltip item
8294function createTooltipItem(element) {
8295	var xScale = element._xScale;
8296	var yScale = element._yScale || element._scale; // handle radar || polarArea charts
8297	var index = element._index;
8298	var datasetIndex = element._datasetIndex;
8299
8300	return {
8301		xLabel: xScale ? xScale.getLabelForIndex(index, datasetIndex) : '',
8302		yLabel: yScale ? yScale.getLabelForIndex(index, datasetIndex) : '',
8303		index: index,
8304		datasetIndex: datasetIndex,
8305		x: element._model.x,
8306		y: element._model.y
8307	};
8308}
8309
8310/**
8311 * Helper to get the reset model for the tooltip
8312 * @param tooltipOpts {Object} the tooltip options
8313 */
8314function getBaseModel(tooltipOpts) {
8315	var globalDefaults = defaults.global;
8316	var valueOrDefault = helpers.valueOrDefault;
8317
8318	return {
8319		// Positioning
8320		xPadding: tooltipOpts.xPadding,
8321		yPadding: tooltipOpts.yPadding,
8322		xAlign: tooltipOpts.xAlign,
8323		yAlign: tooltipOpts.yAlign,
8324
8325		// Body
8326		bodyFontColor: tooltipOpts.bodyFontColor,
8327		_bodyFontFamily: valueOrDefault(tooltipOpts.bodyFontFamily, globalDefaults.defaultFontFamily),
8328		_bodyFontStyle: valueOrDefault(tooltipOpts.bodyFontStyle, globalDefaults.defaultFontStyle),
8329		_bodyAlign: tooltipOpts.bodyAlign,
8330		bodyFontSize: valueOrDefault(tooltipOpts.bodyFontSize, globalDefaults.defaultFontSize),
8331		bodySpacing: tooltipOpts.bodySpacing,
8332
8333		// Title
8334		titleFontColor: tooltipOpts.titleFontColor,
8335		_titleFontFamily: valueOrDefault(tooltipOpts.titleFontFamily, globalDefaults.defaultFontFamily),
8336		_titleFontStyle: valueOrDefault(tooltipOpts.titleFontStyle, globalDefaults.defaultFontStyle),
8337		titleFontSize: valueOrDefault(tooltipOpts.titleFontSize, globalDefaults.defaultFontSize),
8338		_titleAlign: tooltipOpts.titleAlign,
8339		titleSpacing: tooltipOpts.titleSpacing,
8340		titleMarginBottom: tooltipOpts.titleMarginBottom,
8341
8342		// Footer
8343		footerFontColor: tooltipOpts.footerFontColor,
8344		_footerFontFamily: valueOrDefault(tooltipOpts.footerFontFamily, globalDefaults.defaultFontFamily),
8345		_footerFontStyle: valueOrDefault(tooltipOpts.footerFontStyle, globalDefaults.defaultFontStyle),
8346		footerFontSize: valueOrDefault(tooltipOpts.footerFontSize, globalDefaults.defaultFontSize),
8347		_footerAlign: tooltipOpts.footerAlign,
8348		footerSpacing: tooltipOpts.footerSpacing,
8349		footerMarginTop: tooltipOpts.footerMarginTop,
8350
8351		// Appearance
8352		caretSize: tooltipOpts.caretSize,
8353		cornerRadius: tooltipOpts.cornerRadius,
8354		backgroundColor: tooltipOpts.backgroundColor,
8355		opacity: 0,
8356		legendColorBackground: tooltipOpts.multiKeyBackground,
8357		displayColors: tooltipOpts.displayColors,
8358		borderColor: tooltipOpts.borderColor,
8359		borderWidth: tooltipOpts.borderWidth
8360	};
8361}
8362
8363/**
8364 * Get the size of the tooltip
8365 */
8366function getTooltipSize(tooltip, model) {
8367	var ctx = tooltip._chart.ctx;
8368
8369	var height = model.yPadding * 2; // Tooltip Padding
8370	var width = 0;
8371
8372	// Count of all lines in the body
8373	var body = model.body;
8374	var combinedBodyLength = body.reduce(function(count, bodyItem) {
8375		return count + bodyItem.before.length + bodyItem.lines.length + bodyItem.after.length;
8376	}, 0);
8377	combinedBodyLength += model.beforeBody.length + model.afterBody.length;
8378
8379	var titleLineCount = model.title.length;
8380	var footerLineCount = model.footer.length;
8381	var titleFontSize = model.titleFontSize;
8382	var bodyFontSize = model.bodyFontSize;
8383	var footerFontSize = model.footerFontSize;
8384
8385	height += titleLineCount * titleFontSize; // Title Lines
8386	height += titleLineCount ? (titleLineCount - 1) * model.titleSpacing : 0; // Title Line Spacing
8387	height += titleLineCount ? model.titleMarginBottom : 0; // Title's bottom Margin
8388	height += combinedBodyLength * bodyFontSize; // Body Lines
8389	height += combinedBodyLength ? (combinedBodyLength - 1) * model.bodySpacing : 0; // Body Line Spacing
8390	height += footerLineCount ? model.footerMarginTop : 0; // Footer Margin
8391	height += footerLineCount * (footerFontSize); // Footer Lines
8392	height += footerLineCount ? (footerLineCount - 1) * model.footerSpacing : 0; // Footer Line Spacing
8393
8394	// Title width
8395	var widthPadding = 0;
8396	var maxLineWidth = function(line) {
8397		width = Math.max(width, ctx.measureText(line).width + widthPadding);
8398	};
8399
8400	ctx.font = helpers.fontString(titleFontSize, model._titleFontStyle, model._titleFontFamily);
8401	helpers.each(model.title, maxLineWidth);
8402
8403	// Body width
8404	ctx.font = helpers.fontString(bodyFontSize, model._bodyFontStyle, model._bodyFontFamily);
8405	helpers.each(model.beforeBody.concat(model.afterBody), maxLineWidth);
8406
8407	// Body lines may include some extra width due to the color box
8408	widthPadding = model.displayColors ? (bodyFontSize + 2) : 0;
8409	helpers.each(body, function(bodyItem) {
8410		helpers.each(bodyItem.before, maxLineWidth);
8411		helpers.each(bodyItem.lines, maxLineWidth);
8412		helpers.each(bodyItem.after, maxLineWidth);
8413	});
8414
8415	// Reset back to 0
8416	widthPadding = 0;
8417
8418	// Footer width
8419	ctx.font = helpers.fontString(footerFontSize, model._footerFontStyle, model._footerFontFamily);
8420	helpers.each(model.footer, maxLineWidth);
8421
8422	// Add padding
8423	width += 2 * model.xPadding;
8424
8425	return {
8426		width: width,
8427		height: height
8428	};
8429}
8430
8431/**
8432 * Helper to get the alignment of a tooltip given the size
8433 */
8434function determineAlignment(tooltip, size) {
8435	var model = tooltip._model;
8436	var chart = tooltip._chart;
8437	var chartArea = tooltip._chart.chartArea;
8438	var xAlign = 'center';
8439	var yAlign = 'center';
8440
8441	if (model.y < size.height) {
8442		yAlign = 'top';
8443	} else if (model.y > (chart.height - size.height)) {
8444		yAlign = 'bottom';
8445	}
8446
8447	var lf, rf; // functions to determine left, right alignment
8448	var olf, orf; // functions to determine if left/right alignment causes tooltip to go outside chart
8449	var yf; // function to get the y alignment if the tooltip goes outside of the left or right edges
8450	var midX = (chartArea.left + chartArea.right) / 2;
8451	var midY = (chartArea.top + chartArea.bottom) / 2;
8452
8453	if (yAlign === 'center') {
8454		lf = function(x) {
8455			return x <= midX;
8456		};
8457		rf = function(x) {
8458			return x > midX;
8459		};
8460	} else {
8461		lf = function(x) {
8462			return x <= (size.width / 2);
8463		};
8464		rf = function(x) {
8465			return x >= (chart.width - (size.width / 2));
8466		};
8467	}
8468
8469	olf = function(x) {
8470		return x + size.width + model.caretSize + model.caretPadding > chart.width;
8471	};
8472	orf = function(x) {
8473		return x - size.width - model.caretSize - model.caretPadding < 0;
8474	};
8475	yf = function(y) {
8476		return y <= midY ? 'top' : 'bottom';
8477	};
8478
8479	if (lf(model.x)) {
8480		xAlign = 'left';
8481
8482		// Is tooltip too wide and goes over the right side of the chart.?
8483		if (olf(model.x)) {
8484			xAlign = 'center';
8485			yAlign = yf(model.y);
8486		}
8487	} else if (rf(model.x)) {
8488		xAlign = 'right';
8489
8490		// Is tooltip too wide and goes outside left edge of canvas?
8491		if (orf(model.x)) {
8492			xAlign = 'center';
8493			yAlign = yf(model.y);
8494		}
8495	}
8496
8497	var opts = tooltip._options;
8498	return {
8499		xAlign: opts.xAlign ? opts.xAlign : xAlign,
8500		yAlign: opts.yAlign ? opts.yAlign : yAlign
8501	};
8502}
8503
8504/**
8505 * @Helper to get the location a tooltip needs to be placed at given the initial position (via the vm) and the size and alignment
8506 */
8507function getBackgroundPoint(vm, size, alignment, chart) {
8508	// Background Position
8509	var x = vm.x;
8510	var y = vm.y;
8511
8512	var caretSize = vm.caretSize;
8513	var caretPadding = vm.caretPadding;
8514	var cornerRadius = vm.cornerRadius;
8515	var xAlign = alignment.xAlign;
8516	var yAlign = alignment.yAlign;
8517	var paddingAndSize = caretSize + caretPadding;
8518	var radiusAndPadding = cornerRadius + caretPadding;
8519
8520	if (xAlign === 'right') {
8521		x -= size.width;
8522	} else if (xAlign === 'center') {
8523		x -= (size.width / 2);
8524		if (x + size.width > chart.width) {
8525			x = chart.width - size.width;
8526		}
8527		if (x < 0) {
8528			x = 0;
8529		}
8530	}
8531
8532	if (yAlign === 'top') {
8533		y += paddingAndSize;
8534	} else if (yAlign === 'bottom') {
8535		y -= size.height + paddingAndSize;
8536	} else {
8537		y -= (size.height / 2);
8538	}
8539
8540	if (yAlign === 'center') {
8541		if (xAlign === 'left') {
8542			x += paddingAndSize;
8543		} else if (xAlign === 'right') {
8544			x -= paddingAndSize;
8545		}
8546	} else if (xAlign === 'left') {
8547		x -= radiusAndPadding;
8548	} else if (xAlign === 'right') {
8549		x += radiusAndPadding;
8550	}
8551
8552	return {
8553		x: x,
8554		y: y
8555	};
8556}
8557
8558var exports = module.exports = Element.extend({
8559	initialize: function() {
8560		this._model = getBaseModel(this._options);
8561		this._lastActive = [];
8562	},
8563
8564	// Get the title
8565	// Args are: (tooltipItem, data)
8566	getTitle: function() {
8567		var me = this;
8568		var opts = me._options;
8569		var callbacks = opts.callbacks;
8570
8571		var beforeTitle = callbacks.beforeTitle.apply(me, arguments);
8572		var title = callbacks.title.apply(me, arguments);
8573		var afterTitle = callbacks.afterTitle.apply(me, arguments);
8574
8575		var lines = [];
8576		lines = pushOrConcat(lines, beforeTitle);
8577		lines = pushOrConcat(lines, title);
8578		lines = pushOrConcat(lines, afterTitle);
8579
8580		return lines;
8581	},
8582
8583	// Args are: (tooltipItem, data)
8584	getBeforeBody: function() {
8585		var lines = this._options.callbacks.beforeBody.apply(this, arguments);
8586		return helpers.isArray(lines) ? lines : lines !== undefined ? [lines] : [];
8587	},
8588
8589	// Args are: (tooltipItem, data)
8590	getBody: function(tooltipItems, data) {
8591		var me = this;
8592		var callbacks = me._options.callbacks;
8593		var bodyItems = [];
8594
8595		helpers.each(tooltipItems, function(tooltipItem) {
8596			var bodyItem = {
8597				before: [],
8598				lines: [],
8599				after: []
8600			};
8601			pushOrConcat(bodyItem.before, callbacks.beforeLabel.call(me, tooltipItem, data));
8602			pushOrConcat(bodyItem.lines, callbacks.label.call(me, tooltipItem, data));
8603			pushOrConcat(bodyItem.after, callbacks.afterLabel.call(me, tooltipItem, data));
8604
8605			bodyItems.push(bodyItem);
8606		});
8607
8608		return bodyItems;
8609	},
8610
8611	// Args are: (tooltipItem, data)
8612	getAfterBody: function() {
8613		var lines = this._options.callbacks.afterBody.apply(this, arguments);
8614		return helpers.isArray(lines) ? lines : lines !== undefined ? [lines] : [];
8615	},
8616
8617	// Get the footer and beforeFooter and afterFooter lines
8618	// Args are: (tooltipItem, data)
8619	getFooter: function() {
8620		var me = this;
8621		var callbacks = me._options.callbacks;
8622
8623		var beforeFooter = callbacks.beforeFooter.apply(me, arguments);
8624		var footer = callbacks.footer.apply(me, arguments);
8625		var afterFooter = callbacks.afterFooter.apply(me, arguments);
8626
8627		var lines = [];
8628		lines = pushOrConcat(lines, beforeFooter);
8629		lines = pushOrConcat(lines, footer);
8630		lines = pushOrConcat(lines, afterFooter);
8631
8632		return lines;
8633	},
8634
8635	update: function(changed) {
8636		var me = this;
8637		var opts = me._options;
8638
8639		// Need to regenerate the model because its faster than using extend and it is necessary due to the optimization in Chart.Element.transition
8640		// that does _view = _model if ease === 1. This causes the 2nd tooltip update to set properties in both the view and model at the same time
8641		// which breaks any animations.
8642		var existingModel = me._model;
8643		var model = me._model = getBaseModel(opts);
8644		var active = me._active;
8645
8646		var data = me._data;
8647
8648		// In the case where active.length === 0 we need to keep these at existing values for good animations
8649		var alignment = {
8650			xAlign: existingModel.xAlign,
8651			yAlign: existingModel.yAlign
8652		};
8653		var backgroundPoint = {
8654			x: existingModel.x,
8655			y: existingModel.y
8656		};
8657		var tooltipSize = {
8658			width: existingModel.width,
8659			height: existingModel.height
8660		};
8661		var tooltipPosition = {
8662			x: existingModel.caretX,
8663			y: existingModel.caretY
8664		};
8665
8666		var i, len;
8667
8668		if (active.length) {
8669			model.opacity = 1;
8670
8671			var labelColors = [];
8672			var labelTextColors = [];
8673			tooltipPosition = positioners[opts.position].call(me, active, me._eventPosition);
8674
8675			var tooltipItems = [];
8676			for (i = 0, len = active.length; i < len; ++i) {
8677				tooltipItems.push(createTooltipItem(active[i]));
8678			}
8679
8680			// If the user provided a filter function, use it to modify the tooltip items
8681			if (opts.filter) {
8682				tooltipItems = tooltipItems.filter(function(a) {
8683					return opts.filter(a, data);
8684				});
8685			}
8686
8687			// If the user provided a sorting function, use it to modify the tooltip items
8688			if (opts.itemSort) {
8689				tooltipItems = tooltipItems.sort(function(a, b) {
8690					return opts.itemSort(a, b, data);
8691				});
8692			}
8693
8694			// Determine colors for boxes
8695			helpers.each(tooltipItems, function(tooltipItem) {
8696				labelColors.push(opts.callbacks.labelColor.call(me, tooltipItem, me._chart));
8697				labelTextColors.push(opts.callbacks.labelTextColor.call(me, tooltipItem, me._chart));
8698			});
8699
8700
8701			// Build the Text Lines
8702			model.title = me.getTitle(tooltipItems, data);
8703			model.beforeBody = me.getBeforeBody(tooltipItems, data);
8704			model.body = me.getBody(tooltipItems, data);
8705			model.afterBody = me.getAfterBody(tooltipItems, data);
8706			model.footer = me.getFooter(tooltipItems, data);
8707
8708			// Initial positioning and colors
8709			model.x = Math.round(tooltipPosition.x);
8710			model.y = Math.round(tooltipPosition.y);
8711			model.caretPadding = opts.caretPadding;
8712			model.labelColors = labelColors;
8713			model.labelTextColors = labelTextColors;
8714
8715			// data points
8716			model.dataPoints = tooltipItems;
8717
8718			// We need to determine alignment of the tooltip
8719			tooltipSize = getTooltipSize(this, model);
8720			alignment = determineAlignment(this, tooltipSize);
8721			// Final Size and Position
8722			backgroundPoint = getBackgroundPoint(model, tooltipSize, alignment, me._chart);
8723		} else {
8724			model.opacity = 0;
8725		}
8726
8727		model.xAlign = alignment.xAlign;
8728		model.yAlign = alignment.yAlign;
8729		model.x = backgroundPoint.x;
8730		model.y = backgroundPoint.y;
8731		model.width = tooltipSize.width;
8732		model.height = tooltipSize.height;
8733
8734		// Point where the caret on the tooltip points to
8735		model.caretX = tooltipPosition.x;
8736		model.caretY = tooltipPosition.y;
8737
8738		me._model = model;
8739
8740		if (changed && opts.custom) {
8741			opts.custom.call(me, model);
8742		}
8743
8744		return me;
8745	},
8746
8747	drawCaret: function(tooltipPoint, size) {
8748		var ctx = this._chart.ctx;
8749		var vm = this._view;
8750		var caretPosition = this.getCaretPosition(tooltipPoint, size, vm);
8751
8752		ctx.lineTo(caretPosition.x1, caretPosition.y1);
8753		ctx.lineTo(caretPosition.x2, caretPosition.y2);
8754		ctx.lineTo(caretPosition.x3, caretPosition.y3);
8755	},
8756	getCaretPosition: function(tooltipPoint, size, vm) {
8757		var x1, x2, x3, y1, y2, y3;
8758		var caretSize = vm.caretSize;
8759		var cornerRadius = vm.cornerRadius;
8760		var xAlign = vm.xAlign;
8761		var yAlign = vm.yAlign;
8762		var ptX = tooltipPoint.x;
8763		var ptY = tooltipPoint.y;
8764		var width = size.width;
8765		var height = size.height;
8766
8767		if (yAlign === 'center') {
8768			y2 = ptY + (height / 2);
8769
8770			if (xAlign === 'left') {
8771				x1 = ptX;
8772				x2 = x1 - caretSize;
8773				x3 = x1;
8774
8775				y1 = y2 + caretSize;
8776				y3 = y2 - caretSize;
8777			} else {
8778				x1 = ptX + width;
8779				x2 = x1 + caretSize;
8780				x3 = x1;
8781
8782				y1 = y2 - caretSize;
8783				y3 = y2 + caretSize;
8784			}
8785		} else {
8786			if (xAlign === 'left') {
8787				x2 = ptX + cornerRadius + (caretSize);
8788				x1 = x2 - caretSize;
8789				x3 = x2 + caretSize;
8790			} else if (xAlign === 'right') {
8791				x2 = ptX + width - cornerRadius - caretSize;
8792				x1 = x2 - caretSize;
8793				x3 = x2 + caretSize;
8794			} else {
8795				x2 = vm.caretX;
8796				x1 = x2 - caretSize;
8797				x3 = x2 + caretSize;
8798			}
8799			if (yAlign === 'top') {
8800				y1 = ptY;
8801				y2 = y1 - caretSize;
8802				y3 = y1;
8803			} else {
8804				y1 = ptY + height;
8805				y2 = y1 + caretSize;
8806				y3 = y1;
8807				// invert drawing order
8808				var tmp = x3;
8809				x3 = x1;
8810				x1 = tmp;
8811			}
8812		}
8813		return {x1: x1, x2: x2, x3: x3, y1: y1, y2: y2, y3: y3};
8814	},
8815
8816	drawTitle: function(pt, vm, ctx, opacity) {
8817		var title = vm.title;
8818
8819		if (title.length) {
8820			ctx.textAlign = vm._titleAlign;
8821			ctx.textBaseline = 'top';
8822
8823			var titleFontSize = vm.titleFontSize;
8824			var titleSpacing = vm.titleSpacing;
8825
8826			ctx.fillStyle = mergeOpacity(vm.titleFontColor, opacity);
8827			ctx.font = helpers.fontString(titleFontSize, vm._titleFontStyle, vm._titleFontFamily);
8828
8829			var i, len;
8830			for (i = 0, len = title.length; i < len; ++i) {
8831				ctx.fillText(title[i], pt.x, pt.y);
8832				pt.y += titleFontSize + titleSpacing; // Line Height and spacing
8833
8834				if (i + 1 === title.length) {
8835					pt.y += vm.titleMarginBottom - titleSpacing; // If Last, add margin, remove spacing
8836				}
8837			}
8838		}
8839	},
8840
8841	drawBody: function(pt, vm, ctx, opacity) {
8842		var bodyFontSize = vm.bodyFontSize;
8843		var bodySpacing = vm.bodySpacing;
8844		var body = vm.body;
8845
8846		ctx.textAlign = vm._bodyAlign;
8847		ctx.textBaseline = 'top';
8848		ctx.font = helpers.fontString(bodyFontSize, vm._bodyFontStyle, vm._bodyFontFamily);
8849
8850		// Before Body
8851		var xLinePadding = 0;
8852		var fillLineOfText = function(line) {
8853			ctx.fillText(line, pt.x + xLinePadding, pt.y);
8854			pt.y += bodyFontSize + bodySpacing;
8855		};
8856
8857		// Before body lines
8858		ctx.fillStyle = mergeOpacity(vm.bodyFontColor, opacity);
8859		helpers.each(vm.beforeBody, fillLineOfText);
8860
8861		var drawColorBoxes = vm.displayColors;
8862		xLinePadding = drawColorBoxes ? (bodyFontSize + 2) : 0;
8863
8864		// Draw body lines now
8865		helpers.each(body, function(bodyItem, i) {
8866			var textColor = mergeOpacity(vm.labelTextColors[i], opacity);
8867			ctx.fillStyle = textColor;
8868			helpers.each(bodyItem.before, fillLineOfText);
8869
8870			helpers.each(bodyItem.lines, function(line) {
8871				// Draw Legend-like boxes if needed
8872				if (drawColorBoxes) {
8873					// Fill a white rect so that colours merge nicely if the opacity is < 1
8874					ctx.fillStyle = mergeOpacity(vm.legendColorBackground, opacity);
8875					ctx.fillRect(pt.x, pt.y, bodyFontSize, bodyFontSize);
8876
8877					// Border
8878					ctx.lineWidth = 1;
8879					ctx.strokeStyle = mergeOpacity(vm.labelColors[i].borderColor, opacity);
8880					ctx.strokeRect(pt.x, pt.y, bodyFontSize, bodyFontSize);
8881
8882					// Inner square
8883					ctx.fillStyle = mergeOpacity(vm.labelColors[i].backgroundColor, opacity);
8884					ctx.fillRect(pt.x + 1, pt.y + 1, bodyFontSize - 2, bodyFontSize - 2);
8885					ctx.fillStyle = textColor;
8886				}
8887
8888				fillLineOfText(line);
8889			});
8890
8891			helpers.each(bodyItem.after, fillLineOfText);
8892		});
8893
8894		// Reset back to 0 for after body
8895		xLinePadding = 0;
8896
8897		// After body lines
8898		helpers.each(vm.afterBody, fillLineOfText);
8899		pt.y -= bodySpacing; // Remove last body spacing
8900	},
8901
8902	drawFooter: function(pt, vm, ctx, opacity) {
8903		var footer = vm.footer;
8904
8905		if (footer.length) {
8906			pt.y += vm.footerMarginTop;
8907
8908			ctx.textAlign = vm._footerAlign;
8909			ctx.textBaseline = 'top';
8910
8911			ctx.fillStyle = mergeOpacity(vm.footerFontColor, opacity);
8912			ctx.font = helpers.fontString(vm.footerFontSize, vm._footerFontStyle, vm._footerFontFamily);
8913
8914			helpers.each(footer, function(line) {
8915				ctx.fillText(line, pt.x, pt.y);
8916				pt.y += vm.footerFontSize + vm.footerSpacing;
8917			});
8918		}
8919	},
8920
8921	drawBackground: function(pt, vm, ctx, tooltipSize, opacity) {
8922		ctx.fillStyle = mergeOpacity(vm.backgroundColor, opacity);
8923		ctx.strokeStyle = mergeOpacity(vm.borderColor, opacity);
8924		ctx.lineWidth = vm.borderWidth;
8925		var xAlign = vm.xAlign;
8926		var yAlign = vm.yAlign;
8927		var x = pt.x;
8928		var y = pt.y;
8929		var width = tooltipSize.width;
8930		var height = tooltipSize.height;
8931		var radius = vm.cornerRadius;
8932
8933		ctx.beginPath();
8934		ctx.moveTo(x + radius, y);
8935		if (yAlign === 'top') {
8936			this.drawCaret(pt, tooltipSize);
8937		}
8938		ctx.lineTo(x + width - radius, y);
8939		ctx.quadraticCurveTo(x + width, y, x + width, y + radius);
8940		if (yAlign === 'center' && xAlign === 'right') {
8941			this.drawCaret(pt, tooltipSize);
8942		}
8943		ctx.lineTo(x + width, y + height - radius);
8944		ctx.quadraticCurveTo(x + width, y + height, x + width - radius, y + height);
8945		if (yAlign === 'bottom') {
8946			this.drawCaret(pt, tooltipSize);
8947		}
8948		ctx.lineTo(x + radius, y + height);
8949		ctx.quadraticCurveTo(x, y + height, x, y + height - radius);
8950		if (yAlign === 'center' && xAlign === 'left') {
8951			this.drawCaret(pt, tooltipSize);
8952		}
8953		ctx.lineTo(x, y + radius);
8954		ctx.quadraticCurveTo(x, y, x + radius, y);
8955		ctx.closePath();
8956
8957		ctx.fill();
8958
8959		if (vm.borderWidth > 0) {
8960			ctx.stroke();
8961		}
8962	},
8963
8964	draw: function() {
8965		var ctx = this._chart.ctx;
8966		var vm = this._view;
8967
8968		if (vm.opacity === 0) {
8969			return;
8970		}
8971
8972		var tooltipSize = {
8973			width: vm.width,
8974			height: vm.height
8975		};
8976		var pt = {
8977			x: vm.x,
8978			y: vm.y
8979		};
8980
8981		// IE11/Edge does not like very small opacities, so snap to 0
8982		var opacity = Math.abs(vm.opacity < 1e-3) ? 0 : vm.opacity;
8983
8984		// Truthy/falsey value for empty tooltip
8985		var hasTooltipContent = vm.title.length || vm.beforeBody.length || vm.body.length || vm.afterBody.length || vm.footer.length;
8986
8987		if (this._options.enabled && hasTooltipContent) {
8988			// Draw Background
8989			this.drawBackground(pt, vm, ctx, tooltipSize, opacity);
8990
8991			// Draw Title, Body, and Footer
8992			pt.x += vm.xPadding;
8993			pt.y += vm.yPadding;
8994
8995			// Titles
8996			this.drawTitle(pt, vm, ctx, opacity);
8997
8998			// Body
8999			this.drawBody(pt, vm, ctx, opacity);
9000
9001			// Footer
9002			this.drawFooter(pt, vm, ctx, opacity);
9003		}
9004	},
9005
9006	/**
9007	 * Handle an event
9008	 * @private
9009	 * @param {IEvent} event - The event to handle
9010	 * @returns {Boolean} true if the tooltip changed
9011	 */
9012	handleEvent: function(e) {
9013		var me = this;
9014		var options = me._options;
9015		var changed = false;
9016
9017		me._lastActive = me._lastActive || [];
9018
9019		// Find Active Elements for tooltips
9020		if (e.type === 'mouseout') {
9021			me._active = [];
9022		} else {
9023			me._active = me._chart.getElementsAtEventForMode(e, options.mode, options);
9024		}
9025
9026		// Remember Last Actives
9027		changed = !helpers.arrayEquals(me._active, me._lastActive);
9028
9029		// Only handle target event on tooltip change
9030		if (changed) {
9031			me._lastActive = me._active;
9032
9033			if (options.enabled || options.custom) {
9034				me._eventPosition = {
9035					x: e.x,
9036					y: e.y
9037				};
9038
9039				me.update(true);
9040				me.pivot();
9041			}
9042		}
9043
9044		return changed;
9045	}
9046});
9047
9048/**
9049 * @namespace Chart.Tooltip.positioners
9050 */
9051exports.positioners = positioners;
9052
9053
9054},{"26":26,"27":27,"46":46}],37:[function(require,module,exports){
9055'use strict';
9056
9057var defaults = require(26);
9058var Element = require(27);
9059var helpers = require(46);
9060
9061defaults._set('global', {
9062	elements: {
9063		arc: {
9064			backgroundColor: defaults.global.defaultColor,
9065			borderColor: '#fff',
9066			borderWidth: 2
9067		}
9068	}
9069});
9070
9071module.exports = Element.extend({
9072	inLabelRange: function(mouseX) {
9073		var vm = this._view;
9074
9075		if (vm) {
9076			return (Math.pow(mouseX - vm.x, 2) < Math.pow(vm.radius + vm.hoverRadius, 2));
9077		}
9078		return false;
9079	},
9080
9081	inRange: function(chartX, chartY) {
9082		var vm = this._view;
9083
9084		if (vm) {
9085			var pointRelativePosition = helpers.getAngleFromPoint(vm, {x: chartX, y: chartY});
9086			var	angle = pointRelativePosition.angle;
9087			var distance = pointRelativePosition.distance;
9088
9089			// Sanitise angle range
9090			var startAngle = vm.startAngle;
9091			var endAngle = vm.endAngle;
9092			while (endAngle < startAngle) {
9093				endAngle += 2.0 * Math.PI;
9094			}
9095			while (angle > endAngle) {
9096				angle -= 2.0 * Math.PI;
9097			}
9098			while (angle < startAngle) {
9099				angle += 2.0 * Math.PI;
9100			}
9101
9102			// Check if within the range of the open/close angle
9103			var betweenAngles = (angle >= startAngle && angle <= endAngle);
9104			var withinRadius = (distance >= vm.innerRadius && distance <= vm.outerRadius);
9105
9106			return (betweenAngles && withinRadius);
9107		}
9108		return false;
9109	},
9110
9111	getCenterPoint: function() {
9112		var vm = this._view;
9113		var halfAngle = (vm.startAngle + vm.endAngle) / 2;
9114		var halfRadius = (vm.innerRadius + vm.outerRadius) / 2;
9115		return {
9116			x: vm.x + Math.cos(halfAngle) * halfRadius,
9117			y: vm.y + Math.sin(halfAngle) * halfRadius
9118		};
9119	},
9120
9121	getArea: function() {
9122		var vm = this._view;
9123		return Math.PI * ((vm.endAngle - vm.startAngle) / (2 * Math.PI)) * (Math.pow(vm.outerRadius, 2) - Math.pow(vm.innerRadius, 2));
9124	},
9125
9126	tooltipPosition: function() {
9127		var vm = this._view;
9128		var centreAngle = vm.startAngle + ((vm.endAngle - vm.startAngle) / 2);
9129		var rangeFromCentre = (vm.outerRadius - vm.innerRadius) / 2 + vm.innerRadius;
9130
9131		return {
9132			x: vm.x + (Math.cos(centreAngle) * rangeFromCentre),
9133			y: vm.y + (Math.sin(centreAngle) * rangeFromCentre)
9134		};
9135	},
9136
9137	draw: function() {
9138		var ctx = this._chart.ctx;
9139		var vm = this._view;
9140		var sA = vm.startAngle;
9141		var eA = vm.endAngle;
9142
9143		ctx.beginPath();
9144
9145		ctx.arc(vm.x, vm.y, vm.outerRadius, sA, eA);
9146		ctx.arc(vm.x, vm.y, vm.innerRadius, eA, sA, true);
9147
9148		ctx.closePath();
9149		ctx.strokeStyle = vm.borderColor;
9150		ctx.lineWidth = vm.borderWidth;
9151
9152		ctx.fillStyle = vm.backgroundColor;
9153
9154		ctx.fill();
9155		ctx.lineJoin = 'bevel';
9156
9157		if (vm.borderWidth) {
9158			ctx.stroke();
9159		}
9160	}
9161});
9162
9163},{"26":26,"27":27,"46":46}],38:[function(require,module,exports){
9164'use strict';
9165
9166var defaults = require(26);
9167var Element = require(27);
9168var helpers = require(46);
9169
9170var globalDefaults = defaults.global;
9171
9172defaults._set('global', {
9173	elements: {
9174		line: {
9175			tension: 0.4,
9176			backgroundColor: globalDefaults.defaultColor,
9177			borderWidth: 3,
9178			borderColor: globalDefaults.defaultColor,
9179			borderCapStyle: 'butt',
9180			borderDash: [],
9181			borderDashOffset: 0.0,
9182			borderJoinStyle: 'miter',
9183			capBezierPoints: true,
9184			fill: true, // do we fill in the area between the line and its base axis
9185		}
9186	}
9187});
9188
9189module.exports = Element.extend({
9190	draw: function() {
9191		var me = this;
9192		var vm = me._view;
9193		var ctx = me._chart.ctx;
9194		var spanGaps = vm.spanGaps;
9195		var points = me._children.slice(); // clone array
9196		var globalOptionLineElements = globalDefaults.elements.line;
9197		var lastDrawnIndex = -1;
9198		var index, current, previous, currentVM;
9199
9200		// If we are looping, adding the first point again
9201		if (me._loop && points.length) {
9202			points.push(points[0]);
9203		}
9204
9205		ctx.save();
9206
9207		// Stroke Line Options
9208		ctx.lineCap = vm.borderCapStyle || globalOptionLineElements.borderCapStyle;
9209
9210		// IE 9 and 10 do not support line dash
9211		if (ctx.setLineDash) {
9212			ctx.setLineDash(vm.borderDash || globalOptionLineElements.borderDash);
9213		}
9214
9215		ctx.lineDashOffset = vm.borderDashOffset || globalOptionLineElements.borderDashOffset;
9216		ctx.lineJoin = vm.borderJoinStyle || globalOptionLineElements.borderJoinStyle;
9217		ctx.lineWidth = vm.borderWidth || globalOptionLineElements.borderWidth;
9218		ctx.strokeStyle = vm.borderColor || globalDefaults.defaultColor;
9219
9220		// Stroke Line
9221		ctx.beginPath();
9222		lastDrawnIndex = -1;
9223
9224		for (index = 0; index < points.length; ++index) {
9225			current = points[index];
9226			previous = helpers.previousItem(points, index);
9227			currentVM = current._view;
9228
9229			// First point moves to it's starting position no matter what
9230			if (index === 0) {
9231				if (!currentVM.skip) {
9232					ctx.moveTo(currentVM.x, currentVM.y);
9233					lastDrawnIndex = index;
9234				}
9235			} else {
9236				previous = lastDrawnIndex === -1 ? previous : points[lastDrawnIndex];
9237
9238				if (!currentVM.skip) {
9239					if ((lastDrawnIndex !== (index - 1) && !spanGaps) || lastDrawnIndex === -1) {
9240						// There was a gap and this is the first point after the gap
9241						ctx.moveTo(currentVM.x, currentVM.y);
9242					} else {
9243						// Line to next point
9244						helpers.canvas.lineTo(ctx, previous._view, current._view);
9245					}
9246					lastDrawnIndex = index;
9247				}
9248			}
9249		}
9250
9251		ctx.stroke();
9252		ctx.restore();
9253	}
9254});
9255
9256},{"26":26,"27":27,"46":46}],39:[function(require,module,exports){
9257'use strict';
9258
9259var defaults = require(26);
9260var Element = require(27);
9261var helpers = require(46);
9262
9263var defaultColor = defaults.global.defaultColor;
9264
9265defaults._set('global', {
9266	elements: {
9267		point: {
9268			radius: 3,
9269			pointStyle: 'circle',
9270			backgroundColor: defaultColor,
9271			borderColor: defaultColor,
9272			borderWidth: 1,
9273			// Hover
9274			hitRadius: 1,
9275			hoverRadius: 4,
9276			hoverBorderWidth: 1
9277		}
9278	}
9279});
9280
9281function xRange(mouseX) {
9282	var vm = this._view;
9283	return vm ? (Math.abs(mouseX - vm.x) < vm.radius + vm.hitRadius) : false;
9284}
9285
9286function yRange(mouseY) {
9287	var vm = this._view;
9288	return vm ? (Math.abs(mouseY - vm.y) < vm.radius + vm.hitRadius) : false;
9289}
9290
9291module.exports = Element.extend({
9292	inRange: function(mouseX, mouseY) {
9293		var vm = this._view;
9294		return vm ? ((Math.pow(mouseX - vm.x, 2) + Math.pow(mouseY - vm.y, 2)) < Math.pow(vm.hitRadius + vm.radius, 2)) : false;
9295	},
9296
9297	inLabelRange: xRange,
9298	inXRange: xRange,
9299	inYRange: yRange,
9300
9301	getCenterPoint: function() {
9302		var vm = this._view;
9303		return {
9304			x: vm.x,
9305			y: vm.y
9306		};
9307	},
9308
9309	getArea: function() {
9310		return Math.PI * Math.pow(this._view.radius, 2);
9311	},
9312
9313	tooltipPosition: function() {
9314		var vm = this._view;
9315		return {
9316			x: vm.x,
9317			y: vm.y,
9318			padding: vm.radius + vm.borderWidth
9319		};
9320	},
9321
9322	draw: function(chartArea) {
9323		var vm = this._view;
9324		var model = this._model;
9325		var ctx = this._chart.ctx;
9326		var pointStyle = vm.pointStyle;
9327		var radius = vm.radius;
9328		var x = vm.x;
9329		var y = vm.y;
9330		var color = helpers.color;
9331		var errMargin = 1.01; // 1.01 is margin for Accumulated error. (Especially Edge, IE.)
9332		var ratio = 0;
9333
9334		if (vm.skip) {
9335			return;
9336		}
9337
9338		ctx.strokeStyle = vm.borderColor || defaultColor;
9339		ctx.lineWidth = helpers.valueOrDefault(vm.borderWidth, defaults.global.elements.point.borderWidth);
9340		ctx.fillStyle = vm.backgroundColor || defaultColor;
9341
9342		// Cliping for Points.
9343		// going out from inner charArea?
9344		if ((chartArea !== undefined) && ((model.x < chartArea.left) || (chartArea.right * errMargin < model.x) || (model.y < chartArea.top) || (chartArea.bottom * errMargin < model.y))) {
9345			// Point fade out
9346			if (model.x < chartArea.left) {
9347				ratio = (x - model.x) / (chartArea.left - model.x);
9348			} else if (chartArea.right * errMargin < model.x) {
9349				ratio = (model.x - x) / (model.x - chartArea.right);
9350			} else if (model.y < chartArea.top) {
9351				ratio = (y - model.y) / (chartArea.top - model.y);
9352			} else if (chartArea.bottom * errMargin < model.y) {
9353				ratio = (model.y - y) / (model.y - chartArea.bottom);
9354			}
9355			ratio = Math.round(ratio * 100) / 100;
9356			ctx.strokeStyle = color(ctx.strokeStyle).alpha(ratio).rgbString();
9357			ctx.fillStyle = color(ctx.fillStyle).alpha(ratio).rgbString();
9358		}
9359
9360		helpers.canvas.drawPoint(ctx, pointStyle, radius, x, y);
9361	}
9362});
9363
9364},{"26":26,"27":27,"46":46}],40:[function(require,module,exports){
9365'use strict';
9366
9367var defaults = require(26);
9368var Element = require(27);
9369
9370defaults._set('global', {
9371	elements: {
9372		rectangle: {
9373			backgroundColor: defaults.global.defaultColor,
9374			borderColor: defaults.global.defaultColor,
9375			borderSkipped: 'bottom',
9376			borderWidth: 0
9377		}
9378	}
9379});
9380
9381function isVertical(bar) {
9382	return bar._view.width !== undefined;
9383}
9384
9385/**
9386 * Helper function to get the bounds of the bar regardless of the orientation
9387 * @param bar {Chart.Element.Rectangle} the bar
9388 * @return {Bounds} bounds of the bar
9389 * @private
9390 */
9391function getBarBounds(bar) {
9392	var vm = bar._view;
9393	var x1, x2, y1, y2;
9394
9395	if (isVertical(bar)) {
9396		// vertical
9397		var halfWidth = vm.width / 2;
9398		x1 = vm.x - halfWidth;
9399		x2 = vm.x + halfWidth;
9400		y1 = Math.min(vm.y, vm.base);
9401		y2 = Math.max(vm.y, vm.base);
9402	} else {
9403		// horizontal bar
9404		var halfHeight = vm.height / 2;
9405		x1 = Math.min(vm.x, vm.base);
9406		x2 = Math.max(vm.x, vm.base);
9407		y1 = vm.y - halfHeight;
9408		y2 = vm.y + halfHeight;
9409	}
9410
9411	return {
9412		left: x1,
9413		top: y1,
9414		right: x2,
9415		bottom: y2
9416	};
9417}
9418
9419module.exports = Element.extend({
9420	draw: function() {
9421		var ctx = this._chart.ctx;
9422		var vm = this._view;
9423		var left, right, top, bottom, signX, signY, borderSkipped;
9424		var borderWidth = vm.borderWidth;
9425
9426		if (!vm.horizontal) {
9427			// bar
9428			left = vm.x - vm.width / 2;
9429			right = vm.x + vm.width / 2;
9430			top = vm.y;
9431			bottom = vm.base;
9432			signX = 1;
9433			signY = bottom > top ? 1 : -1;
9434			borderSkipped = vm.borderSkipped || 'bottom';
9435		} else {
9436			// horizontal bar
9437			left = vm.base;
9438			right = vm.x;
9439			top = vm.y - vm.height / 2;
9440			bottom = vm.y + vm.height / 2;
9441			signX = right > left ? 1 : -1;
9442			signY = 1;
9443			borderSkipped = vm.borderSkipped || 'left';
9444		}
9445
9446		// Canvas doesn't allow us to stroke inside the width so we can
9447		// adjust the sizes to fit if we're setting a stroke on the line
9448		if (borderWidth) {
9449			// borderWidth shold be less than bar width and bar height.
9450			var barSize = Math.min(Math.abs(left - right), Math.abs(top - bottom));
9451			borderWidth = borderWidth > barSize ? barSize : borderWidth;
9452			var halfStroke = borderWidth / 2;
9453			// Adjust borderWidth when bar top position is near vm.base(zero).
9454			var borderLeft = left + (borderSkipped !== 'left' ? halfStroke * signX : 0);
9455			var borderRight = right + (borderSkipped !== 'right' ? -halfStroke * signX : 0);
9456			var borderTop = top + (borderSkipped !== 'top' ? halfStroke * signY : 0);
9457			var borderBottom = bottom + (borderSkipped !== 'bottom' ? -halfStroke * signY : 0);
9458			// not become a vertical line?
9459			if (borderLeft !== borderRight) {
9460				top = borderTop;
9461				bottom = borderBottom;
9462			}
9463			// not become a horizontal line?
9464			if (borderTop !== borderBottom) {
9465				left = borderLeft;
9466				right = borderRight;
9467			}
9468		}
9469
9470		ctx.beginPath();
9471		ctx.fillStyle = vm.backgroundColor;
9472		ctx.strokeStyle = vm.borderColor;
9473		ctx.lineWidth = borderWidth;
9474
9475		// Corner points, from bottom-left to bottom-right clockwise
9476		// | 1 2 |
9477		// | 0 3 |
9478		var corners = [
9479			[left, bottom],
9480			[left, top],
9481			[right, top],
9482			[right, bottom]
9483		];
9484
9485		// Find first (starting) corner with fallback to 'bottom'
9486		var borders = ['bottom', 'left', 'top', 'right'];
9487		var startCorner = borders.indexOf(borderSkipped, 0);
9488		if (startCorner === -1) {
9489			startCorner = 0;
9490		}
9491
9492		function cornerAt(index) {
9493			return corners[(startCorner + index) % 4];
9494		}
9495
9496		// Draw rectangle from 'startCorner'
9497		var corner = cornerAt(0);
9498		ctx.moveTo(corner[0], corner[1]);
9499
9500		for (var i = 1; i < 4; i++) {
9501			corner = cornerAt(i);
9502			ctx.lineTo(corner[0], corner[1]);
9503		}
9504
9505		ctx.fill();
9506		if (borderWidth) {
9507			ctx.stroke();
9508		}
9509	},
9510
9511	height: function() {
9512		var vm = this._view;
9513		return vm.base - vm.y;
9514	},
9515
9516	inRange: function(mouseX, mouseY) {
9517		var inRange = false;
9518
9519		if (this._view) {
9520			var bounds = getBarBounds(this);
9521			inRange = mouseX >= bounds.left && mouseX <= bounds.right && mouseY >= bounds.top && mouseY <= bounds.bottom;
9522		}
9523
9524		return inRange;
9525	},
9526
9527	inLabelRange: function(mouseX, mouseY) {
9528		var me = this;
9529		if (!me._view) {
9530			return false;
9531		}
9532
9533		var inRange = false;
9534		var bounds = getBarBounds(me);
9535
9536		if (isVertical(me)) {
9537			inRange = mouseX >= bounds.left && mouseX <= bounds.right;
9538		} else {
9539			inRange = mouseY >= bounds.top && mouseY <= bounds.bottom;
9540		}
9541
9542		return inRange;
9543	},
9544
9545	inXRange: function(mouseX) {
9546		var bounds = getBarBounds(this);
9547		return mouseX >= bounds.left && mouseX <= bounds.right;
9548	},
9549
9550	inYRange: function(mouseY) {
9551		var bounds = getBarBounds(this);
9552		return mouseY >= bounds.top && mouseY <= bounds.bottom;
9553	},
9554
9555	getCenterPoint: function() {
9556		var vm = this._view;
9557		var x, y;
9558		if (isVertical(this)) {
9559			x = vm.x;
9560			y = (vm.y + vm.base) / 2;
9561		} else {
9562			x = (vm.x + vm.base) / 2;
9563			y = vm.y;
9564		}
9565
9566		return {x: x, y: y};
9567	},
9568
9569	getArea: function() {
9570		var vm = this._view;
9571		return vm.width * Math.abs(vm.y - vm.base);
9572	},
9573
9574	tooltipPosition: function() {
9575		var vm = this._view;
9576		return {
9577			x: vm.x,
9578			y: vm.y
9579		};
9580	}
9581});
9582
9583},{"26":26,"27":27}],41:[function(require,module,exports){
9584'use strict';
9585
9586module.exports = {};
9587module.exports.Arc = require(37);
9588module.exports.Line = require(38);
9589module.exports.Point = require(39);
9590module.exports.Rectangle = require(40);
9591
9592},{"37":37,"38":38,"39":39,"40":40}],42:[function(require,module,exports){
9593'use strict';
9594
9595var helpers = require(43);
9596
9597/**
9598 * @namespace Chart.helpers.canvas
9599 */
9600var exports = module.exports = {
9601	/**
9602	 * Clears the entire canvas associated to the given `chart`.
9603	 * @param {Chart} chart - The chart for which to clear the canvas.
9604	 */
9605	clear: function(chart) {
9606		chart.ctx.clearRect(0, 0, chart.width, chart.height);
9607	},
9608
9609	/**
9610	 * Creates a "path" for a rectangle with rounded corners at position (x, y) with a
9611	 * given size (width, height) and the same `radius` for all corners.
9612	 * @param {CanvasRenderingContext2D} ctx - The canvas 2D Context.
9613	 * @param {Number} x - The x axis of the coordinate for the rectangle starting point.
9614	 * @param {Number} y - The y axis of the coordinate for the rectangle starting point.
9615	 * @param {Number} width - The rectangle's width.
9616	 * @param {Number} height - The rectangle's height.
9617	 * @param {Number} radius - The rounded amount (in pixels) for the four corners.
9618	 * @todo handle `radius` as top-left, top-right, bottom-right, bottom-left array/object?
9619	 */
9620	roundedRect: function(ctx, x, y, width, height, radius) {
9621		if (radius) {
9622			var rx = Math.min(radius, width / 2);
9623			var ry = Math.min(radius, height / 2);
9624
9625			ctx.moveTo(x + rx, y);
9626			ctx.lineTo(x + width - rx, y);
9627			ctx.quadraticCurveTo(x + width, y, x + width, y + ry);
9628			ctx.lineTo(x + width, y + height - ry);
9629			ctx.quadraticCurveTo(x + width, y + height, x + width - rx, y + height);
9630			ctx.lineTo(x + rx, y + height);
9631			ctx.quadraticCurveTo(x, y + height, x, y + height - ry);
9632			ctx.lineTo(x, y + ry);
9633			ctx.quadraticCurveTo(x, y, x + rx, y);
9634		} else {
9635			ctx.rect(x, y, width, height);
9636		}
9637	},
9638
9639	drawPoint: function(ctx, style, radius, x, y) {
9640		var type, edgeLength, xOffset, yOffset, height, size;
9641
9642		if (style && typeof style === 'object') {
9643			type = style.toString();
9644			if (type === '[object HTMLImageElement]' || type === '[object HTMLCanvasElement]') {
9645				ctx.drawImage(style, x - style.width / 2, y - style.height / 2, style.width, style.height);
9646				return;
9647			}
9648		}
9649
9650		if (isNaN(radius) || radius <= 0) {
9651			return;
9652		}
9653
9654		switch (style) {
9655		// Default includes circle
9656		default:
9657			ctx.beginPath();
9658			ctx.arc(x, y, radius, 0, Math.PI * 2);
9659			ctx.closePath();
9660			ctx.fill();
9661			break;
9662		case 'triangle':
9663			ctx.beginPath();
9664			edgeLength = 3 * radius / Math.sqrt(3);
9665			height = edgeLength * Math.sqrt(3) / 2;
9666			ctx.moveTo(x - edgeLength / 2, y + height / 3);
9667			ctx.lineTo(x + edgeLength / 2, y + height / 3);
9668			ctx.lineTo(x, y - 2 * height / 3);
9669			ctx.closePath();
9670			ctx.fill();
9671			break;
9672		case 'rect':
9673			size = 1 / Math.SQRT2 * radius;
9674			ctx.beginPath();
9675			ctx.fillRect(x - size, y - size, 2 * size, 2 * size);
9676			ctx.strokeRect(x - size, y - size, 2 * size, 2 * size);
9677			break;
9678		case 'rectRounded':
9679			var offset = radius / Math.SQRT2;
9680			var leftX = x - offset;
9681			var topY = y - offset;
9682			var sideSize = Math.SQRT2 * radius;
9683			ctx.beginPath();
9684			this.roundedRect(ctx, leftX, topY, sideSize, sideSize, radius / 2);
9685			ctx.closePath();
9686			ctx.fill();
9687			break;
9688		case 'rectRot':
9689			size = 1 / Math.SQRT2 * radius;
9690			ctx.beginPath();
9691			ctx.moveTo(x - size, y);
9692			ctx.lineTo(x, y + size);
9693			ctx.lineTo(x + size, y);
9694			ctx.lineTo(x, y - size);
9695			ctx.closePath();
9696			ctx.fill();
9697			break;
9698		case 'cross':
9699			ctx.beginPath();
9700			ctx.moveTo(x, y + radius);
9701			ctx.lineTo(x, y - radius);
9702			ctx.moveTo(x - radius, y);
9703			ctx.lineTo(x + radius, y);
9704			ctx.closePath();
9705			break;
9706		case 'crossRot':
9707			ctx.beginPath();
9708			xOffset = Math.cos(Math.PI / 4) * radius;
9709			yOffset = Math.sin(Math.PI / 4) * radius;
9710			ctx.moveTo(x - xOffset, y - yOffset);
9711			ctx.lineTo(x + xOffset, y + yOffset);
9712			ctx.moveTo(x - xOffset, y + yOffset);
9713			ctx.lineTo(x + xOffset, y - yOffset);
9714			ctx.closePath();
9715			break;
9716		case 'star':
9717			ctx.beginPath();
9718			ctx.moveTo(x, y + radius);
9719			ctx.lineTo(x, y - radius);
9720			ctx.moveTo(x - radius, y);
9721			ctx.lineTo(x + radius, y);
9722			xOffset = Math.cos(Math.PI / 4) * radius;
9723			yOffset = Math.sin(Math.PI / 4) * radius;
9724			ctx.moveTo(x - xOffset, y - yOffset);
9725			ctx.lineTo(x + xOffset, y + yOffset);
9726			ctx.moveTo(x - xOffset, y + yOffset);
9727			ctx.lineTo(x + xOffset, y - yOffset);
9728			ctx.closePath();
9729			break;
9730		case 'line':
9731			ctx.beginPath();
9732			ctx.moveTo(x - radius, y);
9733			ctx.lineTo(x + radius, y);
9734			ctx.closePath();
9735			break;
9736		case 'dash':
9737			ctx.beginPath();
9738			ctx.moveTo(x, y);
9739			ctx.lineTo(x + radius, y);
9740			ctx.closePath();
9741			break;
9742		}
9743
9744		ctx.stroke();
9745	},
9746
9747	clipArea: function(ctx, area) {
9748		ctx.save();
9749		ctx.beginPath();
9750		ctx.rect(area.left, area.top, area.right - area.left, area.bottom - area.top);
9751		ctx.clip();
9752	},
9753
9754	unclipArea: function(ctx) {
9755		ctx.restore();
9756	},
9757
9758	lineTo: function(ctx, previous, target, flip) {
9759		if (target.steppedLine) {
9760			if ((target.steppedLine === 'after' && !flip) || (target.steppedLine !== 'after' && flip)) {
9761				ctx.lineTo(previous.x, target.y);
9762			} else {
9763				ctx.lineTo(target.x, previous.y);
9764			}
9765			ctx.lineTo(target.x, target.y);
9766			return;
9767		}
9768
9769		if (!target.tension) {
9770			ctx.lineTo(target.x, target.y);
9771			return;
9772		}
9773
9774		ctx.bezierCurveTo(
9775			flip ? previous.controlPointPreviousX : previous.controlPointNextX,
9776			flip ? previous.controlPointPreviousY : previous.controlPointNextY,
9777			flip ? target.controlPointNextX : target.controlPointPreviousX,
9778			flip ? target.controlPointNextY : target.controlPointPreviousY,
9779			target.x,
9780			target.y);
9781	}
9782};
9783
9784// DEPRECATIONS
9785
9786/**
9787 * Provided for backward compatibility, use Chart.helpers.canvas.clear instead.
9788 * @namespace Chart.helpers.clear
9789 * @deprecated since version 2.7.0
9790 * @todo remove at version 3
9791 * @private
9792 */
9793helpers.clear = exports.clear;
9794
9795/**
9796 * Provided for backward compatibility, use Chart.helpers.canvas.roundedRect instead.
9797 * @namespace Chart.helpers.drawRoundedRectangle
9798 * @deprecated since version 2.7.0
9799 * @todo remove at version 3
9800 * @private
9801 */
9802helpers.drawRoundedRectangle = function(ctx) {
9803	ctx.beginPath();
9804	exports.roundedRect.apply(exports, arguments);
9805	ctx.closePath();
9806};
9807
9808},{"43":43}],43:[function(require,module,exports){
9809'use strict';
9810
9811/**
9812 * @namespace Chart.helpers
9813 */
9814var helpers = {
9815	/**
9816	 * An empty function that can be used, for example, for optional callback.
9817	 */
9818	noop: function() {},
9819
9820	/**
9821	 * Returns a unique id, sequentially generated from a global variable.
9822	 * @returns {Number}
9823	 * @function
9824	 */
9825	uid: (function() {
9826		var id = 0;
9827		return function() {
9828			return id++;
9829		};
9830	}()),
9831
9832	/**
9833	 * Returns true if `value` is neither null nor undefined, else returns false.
9834	 * @param {*} value - The value to test.
9835	 * @returns {Boolean}
9836	 * @since 2.7.0
9837	 */
9838	isNullOrUndef: function(value) {
9839		return value === null || typeof value === 'undefined';
9840	},
9841
9842	/**
9843	 * Returns true if `value` is an array, else returns false.
9844	 * @param {*} value - The value to test.
9845	 * @returns {Boolean}
9846	 * @function
9847	 */
9848	isArray: Array.isArray ? Array.isArray : function(value) {
9849		return Object.prototype.toString.call(value) === '[object Array]';
9850	},
9851
9852	/**
9853	 * Returns true if `value` is an object (excluding null), else returns false.
9854	 * @param {*} value - The value to test.
9855	 * @returns {Boolean}
9856	 * @since 2.7.0
9857	 */
9858	isObject: function(value) {
9859		return value !== null && Object.prototype.toString.call(value) === '[object Object]';
9860	},
9861
9862	/**
9863	 * Returns `value` if defined, else returns `defaultValue`.
9864	 * @param {*} value - The value to return if defined.
9865	 * @param {*} defaultValue - The value to return if `value` is undefined.
9866	 * @returns {*}
9867	 */
9868	valueOrDefault: function(value, defaultValue) {
9869		return typeof value === 'undefined' ? defaultValue : value;
9870	},
9871
9872	/**
9873	 * Returns value at the given `index` in array if defined, else returns `defaultValue`.
9874	 * @param {Array} value - The array to lookup for value at `index`.
9875	 * @param {Number} index - The index in `value` to lookup for value.
9876	 * @param {*} defaultValue - The value to return if `value[index]` is undefined.
9877	 * @returns {*}
9878	 */
9879	valueAtIndexOrDefault: function(value, index, defaultValue) {
9880		return helpers.valueOrDefault(helpers.isArray(value) ? value[index] : value, defaultValue);
9881	},
9882
9883	/**
9884	 * Calls `fn` with the given `args` in the scope defined by `thisArg` and returns the
9885	 * value returned by `fn`. If `fn` is not a function, this method returns undefined.
9886	 * @param {Function} fn - The function to call.
9887	 * @param {Array|undefined|null} args - The arguments with which `fn` should be called.
9888	 * @param {Object} [thisArg] - The value of `this` provided for the call to `fn`.
9889	 * @returns {*}
9890	 */
9891	callback: function(fn, args, thisArg) {
9892		if (fn && typeof fn.call === 'function') {
9893			return fn.apply(thisArg, args);
9894		}
9895	},
9896
9897	/**
9898	 * Note(SB) for performance sake, this method should only be used when loopable type
9899	 * is unknown or in none intensive code (not called often and small loopable). Else
9900	 * it's preferable to use a regular for() loop and save extra function calls.
9901	 * @param {Object|Array} loopable - The object or array to be iterated.
9902	 * @param {Function} fn - The function to call for each item.
9903	 * @param {Object} [thisArg] - The value of `this` provided for the call to `fn`.
9904	 * @param {Boolean} [reverse] - If true, iterates backward on the loopable.
9905	 */
9906	each: function(loopable, fn, thisArg, reverse) {
9907		var i, len, keys;
9908		if (helpers.isArray(loopable)) {
9909			len = loopable.length;
9910			if (reverse) {
9911				for (i = len - 1; i >= 0; i--) {
9912					fn.call(thisArg, loopable[i], i);
9913				}
9914			} else {
9915				for (i = 0; i < len; i++) {
9916					fn.call(thisArg, loopable[i], i);
9917				}
9918			}
9919		} else if (helpers.isObject(loopable)) {
9920			keys = Object.keys(loopable);
9921			len = keys.length;
9922			for (i = 0; i < len; i++) {
9923				fn.call(thisArg, loopable[keys[i]], keys[i]);
9924			}
9925		}
9926	},
9927
9928	/**
9929	 * Returns true if the `a0` and `a1` arrays have the same content, else returns false.
9930	 * @see http://stackoverflow.com/a/14853974
9931	 * @param {Array} a0 - The array to compare
9932	 * @param {Array} a1 - The array to compare
9933	 * @returns {Boolean}
9934	 */
9935	arrayEquals: function(a0, a1) {
9936		var i, ilen, v0, v1;
9937
9938		if (!a0 || !a1 || a0.length !== a1.length) {
9939			return false;
9940		}
9941
9942		for (i = 0, ilen = a0.length; i < ilen; ++i) {
9943			v0 = a0[i];
9944			v1 = a1[i];
9945
9946			if (v0 instanceof Array && v1 instanceof Array) {
9947				if (!helpers.arrayEquals(v0, v1)) {
9948					return false;
9949				}
9950			} else if (v0 !== v1) {
9951				// NOTE: two different object instances will never be equal: {x:20} != {x:20}
9952				return false;
9953			}
9954		}
9955
9956		return true;
9957	},
9958
9959	/**
9960	 * Returns a deep copy of `source` without keeping references on objects and arrays.
9961	 * @param {*} source - The value to clone.
9962	 * @returns {*}
9963	 */
9964	clone: function(source) {
9965		if (helpers.isArray(source)) {
9966			return source.map(helpers.clone);
9967		}
9968
9969		if (helpers.isObject(source)) {
9970			var target = {};
9971			var keys = Object.keys(source);
9972			var klen = keys.length;
9973			var k = 0;
9974
9975			for (; k < klen; ++k) {
9976				target[keys[k]] = helpers.clone(source[keys[k]]);
9977			}
9978
9979			return target;
9980		}
9981
9982		return source;
9983	},
9984
9985	/**
9986	 * The default merger when Chart.helpers.merge is called without merger option.
9987	 * Note(SB): this method is also used by configMerge and scaleMerge as fallback.
9988	 * @private
9989	 */
9990	_merger: function(key, target, source, options) {
9991		var tval = target[key];
9992		var sval = source[key];
9993
9994		if (helpers.isObject(tval) && helpers.isObject(sval)) {
9995			helpers.merge(tval, sval, options);
9996		} else {
9997			target[key] = helpers.clone(sval);
9998		}
9999	},
10000
10001	/**
10002	 * Merges source[key] in target[key] only if target[key] is undefined.
10003	 * @private
10004	 */
10005	_mergerIf: function(key, target, source) {
10006		var tval = target[key];
10007		var sval = source[key];
10008
10009		if (helpers.isObject(tval) && helpers.isObject(sval)) {
10010			helpers.mergeIf(tval, sval);
10011		} else if (!target.hasOwnProperty(key)) {
10012			target[key] = helpers.clone(sval);
10013		}
10014	},
10015
10016	/**
10017	 * Recursively deep copies `source` properties into `target` with the given `options`.
10018	 * IMPORTANT: `target` is not cloned and will be updated with `source` properties.
10019	 * @param {Object} target - The target object in which all sources are merged into.
10020	 * @param {Object|Array(Object)} source - Object(s) to merge into `target`.
10021	 * @param {Object} [options] - Merging options:
10022	 * @param {Function} [options.merger] - The merge method (key, target, source, options)
10023	 * @returns {Object} The `target` object.
10024	 */
10025	merge: function(target, source, options) {
10026		var sources = helpers.isArray(source) ? source : [source];
10027		var ilen = sources.length;
10028		var merge, i, keys, klen, k;
10029
10030		if (!helpers.isObject(target)) {
10031			return target;
10032		}
10033
10034		options = options || {};
10035		merge = options.merger || helpers._merger;
10036
10037		for (i = 0; i < ilen; ++i) {
10038			source = sources[i];
10039			if (!helpers.isObject(source)) {
10040				continue;
10041			}
10042
10043			keys = Object.keys(source);
10044			for (k = 0, klen = keys.length; k < klen; ++k) {
10045				merge(keys[k], target, source, options);
10046			}
10047		}
10048
10049		return target;
10050	},
10051
10052	/**
10053	 * Recursively deep copies `source` properties into `target` *only* if not defined in target.
10054	 * IMPORTANT: `target` is not cloned and will be updated with `source` properties.
10055	 * @param {Object} target - The target object in which all sources are merged into.
10056	 * @param {Object|Array(Object)} source - Object(s) to merge into `target`.
10057	 * @returns {Object} The `target` object.
10058	 */
10059	mergeIf: function(target, source) {
10060		return helpers.merge(target, source, {merger: helpers._mergerIf});
10061	},
10062
10063	/**
10064	 * Applies the contents of two or more objects together into the first object.
10065	 * @param {Object} target - The target object in which all objects are merged into.
10066	 * @param {Object} arg1 - Object containing additional properties to merge in target.
10067	 * @param {Object} argN - Additional objects containing properties to merge in target.
10068	 * @returns {Object} The `target` object.
10069	 */
10070	extend: function(target) {
10071		var setFn = function(value, key) {
10072			target[key] = value;
10073		};
10074		for (var i = 1, ilen = arguments.length; i < ilen; ++i) {
10075			helpers.each(arguments[i], setFn);
10076		}
10077		return target;
10078	},
10079
10080	/**
10081	 * Basic javascript inheritance based on the model created in Backbone.js
10082	 */
10083	inherits: function(extensions) {
10084		var me = this;
10085		var ChartElement = (extensions && extensions.hasOwnProperty('constructor')) ? extensions.constructor : function() {
10086			return me.apply(this, arguments);
10087		};
10088
10089		var Surrogate = function() {
10090			this.constructor = ChartElement;
10091		};
10092
10093		Surrogate.prototype = me.prototype;
10094		ChartElement.prototype = new Surrogate();
10095		ChartElement.extend = helpers.inherits;
10096
10097		if (extensions) {
10098			helpers.extend(ChartElement.prototype, extensions);
10099		}
10100
10101		ChartElement.__super__ = me.prototype;
10102		return ChartElement;
10103	}
10104};
10105
10106module.exports = helpers;
10107
10108// DEPRECATIONS
10109
10110/**
10111 * Provided for backward compatibility, use Chart.helpers.callback instead.
10112 * @function Chart.helpers.callCallback
10113 * @deprecated since version 2.6.0
10114 * @todo remove at version 3
10115 * @private
10116 */
10117helpers.callCallback = helpers.callback;
10118
10119/**
10120 * Provided for backward compatibility, use Array.prototype.indexOf instead.
10121 * Array.prototype.indexOf compatibility: Chrome, Opera, Safari, FF1.5+, IE9+
10122 * @function Chart.helpers.indexOf
10123 * @deprecated since version 2.7.0
10124 * @todo remove at version 3
10125 * @private
10126 */
10127helpers.indexOf = function(array, item, fromIndex) {
10128	return Array.prototype.indexOf.call(array, item, fromIndex);
10129};
10130
10131/**
10132 * Provided for backward compatibility, use Chart.helpers.valueOrDefault instead.
10133 * @function Chart.helpers.getValueOrDefault
10134 * @deprecated since version 2.7.0
10135 * @todo remove at version 3
10136 * @private
10137 */
10138helpers.getValueOrDefault = helpers.valueOrDefault;
10139
10140/**
10141 * Provided for backward compatibility, use Chart.helpers.valueAtIndexOrDefault instead.
10142 * @function Chart.helpers.getValueAtIndexOrDefault
10143 * @deprecated since version 2.7.0
10144 * @todo remove at version 3
10145 * @private
10146 */
10147helpers.getValueAtIndexOrDefault = helpers.valueAtIndexOrDefault;
10148
10149},{}],44:[function(require,module,exports){
10150'use strict';
10151
10152var helpers = require(43);
10153
10154/**
10155 * Easing functions adapted from Robert Penner's easing equations.
10156 * @namespace Chart.helpers.easingEffects
10157 * @see http://www.robertpenner.com/easing/
10158 */
10159var effects = {
10160	linear: function(t) {
10161		return t;
10162	},
10163
10164	easeInQuad: function(t) {
10165		return t * t;
10166	},
10167
10168	easeOutQuad: function(t) {
10169		return -t * (t - 2);
10170	},
10171
10172	easeInOutQuad: function(t) {
10173		if ((t /= 0.5) < 1) {
10174			return 0.5 * t * t;
10175		}
10176		return -0.5 * ((--t) * (t - 2) - 1);
10177	},
10178
10179	easeInCubic: function(t) {
10180		return t * t * t;
10181	},
10182
10183	easeOutCubic: function(t) {
10184		return (t = t - 1) * t * t + 1;
10185	},
10186
10187	easeInOutCubic: function(t) {
10188		if ((t /= 0.5) < 1) {
10189			return 0.5 * t * t * t;
10190		}
10191		return 0.5 * ((t -= 2) * t * t + 2);
10192	},
10193
10194	easeInQuart: function(t) {
10195		return t * t * t * t;
10196	},
10197
10198	easeOutQuart: function(t) {
10199		return -((t = t - 1) * t * t * t - 1);
10200	},
10201
10202	easeInOutQuart: function(t) {
10203		if ((t /= 0.5) < 1) {
10204			return 0.5 * t * t * t * t;
10205		}
10206		return -0.5 * ((t -= 2) * t * t * t - 2);
10207	},
10208
10209	easeInQuint: function(t) {
10210		return t * t * t * t * t;
10211	},
10212
10213	easeOutQuint: function(t) {
10214		return (t = t - 1) * t * t * t * t + 1;
10215	},
10216
10217	easeInOutQuint: function(t) {
10218		if ((t /= 0.5) < 1) {
10219			return 0.5 * t * t * t * t * t;
10220		}
10221		return 0.5 * ((t -= 2) * t * t * t * t + 2);
10222	},
10223
10224	easeInSine: function(t) {
10225		return -Math.cos(t * (Math.PI / 2)) + 1;
10226	},
10227
10228	easeOutSine: function(t) {
10229		return Math.sin(t * (Math.PI / 2));
10230	},
10231
10232	easeInOutSine: function(t) {
10233		return -0.5 * (Math.cos(Math.PI * t) - 1);
10234	},
10235
10236	easeInExpo: function(t) {
10237		return (t === 0) ? 0 : Math.pow(2, 10 * (t - 1));
10238	},
10239
10240	easeOutExpo: function(t) {
10241		return (t === 1) ? 1 : -Math.pow(2, -10 * t) + 1;
10242	},
10243
10244	easeInOutExpo: function(t) {
10245		if (t === 0) {
10246			return 0;
10247		}
10248		if (t === 1) {
10249			return 1;
10250		}
10251		if ((t /= 0.5) < 1) {
10252			return 0.5 * Math.pow(2, 10 * (t - 1));
10253		}
10254		return 0.5 * (-Math.pow(2, -10 * --t) + 2);
10255	},
10256
10257	easeInCirc: function(t) {
10258		if (t >= 1) {
10259			return t;
10260		}
10261		return -(Math.sqrt(1 - t * t) - 1);
10262	},
10263
10264	easeOutCirc: function(t) {
10265		return Math.sqrt(1 - (t = t - 1) * t);
10266	},
10267
10268	easeInOutCirc: function(t) {
10269		if ((t /= 0.5) < 1) {
10270			return -0.5 * (Math.sqrt(1 - t * t) - 1);
10271		}
10272		return 0.5 * (Math.sqrt(1 - (t -= 2) * t) + 1);
10273	},
10274
10275	easeInElastic: function(t) {
10276		var s = 1.70158;
10277		var p = 0;
10278		var a = 1;
10279		if (t === 0) {
10280			return 0;
10281		}
10282		if (t === 1) {
10283			return 1;
10284		}
10285		if (!p) {
10286			p = 0.3;
10287		}
10288		if (a < 1) {
10289			a = 1;
10290			s = p / 4;
10291		} else {
10292			s = p / (2 * Math.PI) * Math.asin(1 / a);
10293		}
10294		return -(a * Math.pow(2, 10 * (t -= 1)) * Math.sin((t - s) * (2 * Math.PI) / p));
10295	},
10296
10297	easeOutElastic: function(t) {
10298		var s = 1.70158;
10299		var p = 0;
10300		var a = 1;
10301		if (t === 0) {
10302			return 0;
10303		}
10304		if (t === 1) {
10305			return 1;
10306		}
10307		if (!p) {
10308			p = 0.3;
10309		}
10310		if (a < 1) {
10311			a = 1;
10312			s = p / 4;
10313		} else {
10314			s = p / (2 * Math.PI) * Math.asin(1 / a);
10315		}
10316		return a * Math.pow(2, -10 * t) * Math.sin((t - s) * (2 * Math.PI) / p) + 1;
10317	},
10318
10319	easeInOutElastic: function(t) {
10320		var s = 1.70158;
10321		var p = 0;
10322		var a = 1;
10323		if (t === 0) {
10324			return 0;
10325		}
10326		if ((t /= 0.5) === 2) {
10327			return 1;
10328		}
10329		if (!p) {
10330			p = 0.45;
10331		}
10332		if (a < 1) {
10333			a = 1;
10334			s = p / 4;
10335		} else {
10336			s = p / (2 * Math.PI) * Math.asin(1 / a);
10337		}
10338		if (t < 1) {
10339			return -0.5 * (a * Math.pow(2, 10 * (t -= 1)) * Math.sin((t - s) * (2 * Math.PI) / p));
10340		}
10341		return a * Math.pow(2, -10 * (t -= 1)) * Math.sin((t - s) * (2 * Math.PI) / p) * 0.5 + 1;
10342	},
10343	easeInBack: function(t) {
10344		var s = 1.70158;
10345		return t * t * ((s + 1) * t - s);
10346	},
10347
10348	easeOutBack: function(t) {
10349		var s = 1.70158;
10350		return (t = t - 1) * t * ((s + 1) * t + s) + 1;
10351	},
10352
10353	easeInOutBack: function(t) {
10354		var s = 1.70158;
10355		if ((t /= 0.5) < 1) {
10356			return 0.5 * (t * t * (((s *= (1.525)) + 1) * t - s));
10357		}
10358		return 0.5 * ((t -= 2) * t * (((s *= (1.525)) + 1) * t + s) + 2);
10359	},
10360
10361	easeInBounce: function(t) {
10362		return 1 - effects.easeOutBounce(1 - t);
10363	},
10364
10365	easeOutBounce: function(t) {
10366		if (t < (1 / 2.75)) {
10367			return 7.5625 * t * t;
10368		}
10369		if (t < (2 / 2.75)) {
10370			return 7.5625 * (t -= (1.5 / 2.75)) * t + 0.75;
10371		}
10372		if (t < (2.5 / 2.75)) {
10373			return 7.5625 * (t -= (2.25 / 2.75)) * t + 0.9375;
10374		}
10375		return 7.5625 * (t -= (2.625 / 2.75)) * t + 0.984375;
10376	},
10377
10378	easeInOutBounce: function(t) {
10379		if (t < 0.5) {
10380			return effects.easeInBounce(t * 2) * 0.5;
10381		}
10382		return effects.easeOutBounce(t * 2 - 1) * 0.5 + 0.5;
10383	}
10384};
10385
10386module.exports = {
10387	effects: effects
10388};
10389
10390// DEPRECATIONS
10391
10392/**
10393 * Provided for backward compatibility, use Chart.helpers.easing.effects instead.
10394 * @function Chart.helpers.easingEffects
10395 * @deprecated since version 2.7.0
10396 * @todo remove at version 3
10397 * @private
10398 */
10399helpers.easingEffects = effects;
10400
10401},{"43":43}],45:[function(require,module,exports){
10402'use strict';
10403
10404var helpers = require(43);
10405
10406/**
10407 * @alias Chart.helpers.options
10408 * @namespace
10409 */
10410module.exports = {
10411	/**
10412	 * Converts the given line height `value` in pixels for a specific font `size`.
10413	 * @param {Number|String} value - The lineHeight to parse (eg. 1.6, '14px', '75%', '1.6em').
10414	 * @param {Number} size - The font size (in pixels) used to resolve relative `value`.
10415	 * @returns {Number} The effective line height in pixels (size * 1.2 if value is invalid).
10416	 * @see https://developer.mozilla.org/en-US/docs/Web/CSS/line-height
10417	 * @since 2.7.0
10418	 */
10419	toLineHeight: function(value, size) {
10420		var matches = ('' + value).match(/^(normal|(\d+(?:\.\d+)?)(px|em|%)?)$/);
10421		if (!matches || matches[1] === 'normal') {
10422			return size * 1.2;
10423		}
10424
10425		value = +matches[2];
10426
10427		switch (matches[3]) {
10428		case 'px':
10429			return value;
10430		case '%':
10431			value /= 100;
10432			break;
10433		default:
10434			break;
10435		}
10436
10437		return size * value;
10438	},
10439
10440	/**
10441	 * Converts the given value into a padding object with pre-computed width/height.
10442	 * @param {Number|Object} value - If a number, set the value to all TRBL component,
10443	 *  else, if and object, use defined properties and sets undefined ones to 0.
10444	 * @returns {Object} The padding values (top, right, bottom, left, width, height)
10445	 * @since 2.7.0
10446	 */
10447	toPadding: function(value) {
10448		var t, r, b, l;
10449
10450		if (helpers.isObject(value)) {
10451			t = +value.top || 0;
10452			r = +value.right || 0;
10453			b = +value.bottom || 0;
10454			l = +value.left || 0;
10455		} else {
10456			t = r = b = l = +value || 0;
10457		}
10458
10459		return {
10460			top: t,
10461			right: r,
10462			bottom: b,
10463			left: l,
10464			height: t + b,
10465			width: l + r
10466		};
10467	},
10468
10469	/**
10470	 * Evaluates the given `inputs` sequentially and returns the first defined value.
10471	 * @param {Array[]} inputs - An array of values, falling back to the last value.
10472	 * @param {Object} [context] - If defined and the current value is a function, the value
10473	 * is called with `context` as first argument and the result becomes the new input.
10474	 * @param {Number} [index] - If defined and the current value is an array, the value
10475	 * at `index` become the new input.
10476	 * @since 2.7.0
10477	 */
10478	resolve: function(inputs, context, index) {
10479		var i, ilen, value;
10480
10481		for (i = 0, ilen = inputs.length; i < ilen; ++i) {
10482			value = inputs[i];
10483			if (value === undefined) {
10484				continue;
10485			}
10486			if (context !== undefined && typeof value === 'function') {
10487				value = value(context);
10488			}
10489			if (index !== undefined && helpers.isArray(value)) {
10490				value = value[index];
10491			}
10492			if (value !== undefined) {
10493				return value;
10494			}
10495		}
10496	}
10497};
10498
10499},{"43":43}],46:[function(require,module,exports){
10500'use strict';
10501
10502module.exports = require(43);
10503module.exports.easing = require(44);
10504module.exports.canvas = require(42);
10505module.exports.options = require(45);
10506
10507},{"42":42,"43":43,"44":44,"45":45}],47:[function(require,module,exports){
10508/**
10509 * Platform fallback implementation (minimal).
10510 * @see https://github.com/chartjs/Chart.js/pull/4591#issuecomment-319575939
10511 */
10512
10513module.exports = {
10514	acquireContext: function(item) {
10515		if (item && item.canvas) {
10516			// Support for any object associated to a canvas (including a context2d)
10517			item = item.canvas;
10518		}
10519
10520		return item && item.getContext('2d') || null;
10521	}
10522};
10523
10524},{}],48:[function(require,module,exports){
10525/**
10526 * Chart.Platform implementation for targeting a web browser
10527 */
10528
10529'use strict';
10530
10531var helpers = require(46);
10532
10533var EXPANDO_KEY = '$chartjs';
10534var CSS_PREFIX = 'chartjs-';
10535var CSS_RENDER_MONITOR = CSS_PREFIX + 'render-monitor';
10536var CSS_RENDER_ANIMATION = CSS_PREFIX + 'render-animation';
10537var ANIMATION_START_EVENTS = ['animationstart', 'webkitAnimationStart'];
10538
10539/**
10540 * DOM event types -> Chart.js event types.
10541 * Note: only events with different types are mapped.
10542 * @see https://developer.mozilla.org/en-US/docs/Web/Events
10543 */
10544var EVENT_TYPES = {
10545	touchstart: 'mousedown',
10546	touchmove: 'mousemove',
10547	touchend: 'mouseup',
10548	pointerenter: 'mouseenter',
10549	pointerdown: 'mousedown',
10550	pointermove: 'mousemove',
10551	pointerup: 'mouseup',
10552	pointerleave: 'mouseout',
10553	pointerout: 'mouseout'
10554};
10555
10556/**
10557 * The "used" size is the final value of a dimension property after all calculations have
10558 * been performed. This method uses the computed style of `element` but returns undefined
10559 * if the computed style is not expressed in pixels. That can happen in some cases where
10560 * `element` has a size relative to its parent and this last one is not yet displayed,
10561 * for example because of `display: none` on a parent node.
10562 * @see https://developer.mozilla.org/en-US/docs/Web/CSS/used_value
10563 * @returns {Number} Size in pixels or undefined if unknown.
10564 */
10565function readUsedSize(element, property) {
10566	var value = helpers.getStyle(element, property);
10567	var matches = value && value.match(/^(\d+)(\.\d+)?px$/);
10568	return matches ? Number(matches[1]) : undefined;
10569}
10570
10571/**
10572 * Initializes the canvas style and render size without modifying the canvas display size,
10573 * since responsiveness is handled by the controller.resize() method. The config is used
10574 * to determine the aspect ratio to apply in case no explicit height has been specified.
10575 */
10576function initCanvas(canvas, config) {
10577	var style = canvas.style;
10578
10579	// NOTE(SB) canvas.getAttribute('width') !== canvas.width: in the first case it
10580	// returns null or '' if no explicit value has been set to the canvas attribute.
10581	var renderHeight = canvas.getAttribute('height');
10582	var renderWidth = canvas.getAttribute('width');
10583
10584	// Chart.js modifies some canvas values that we want to restore on destroy
10585	canvas[EXPANDO_KEY] = {
10586		initial: {
10587			height: renderHeight,
10588			width: renderWidth,
10589			style: {
10590				display: style.display,
10591				height: style.height,
10592				width: style.width
10593			}
10594		}
10595	};
10596
10597	// Force canvas to display as block to avoid extra space caused by inline
10598	// elements, which would interfere with the responsive resize process.
10599	// https://github.com/chartjs/Chart.js/issues/2538
10600	style.display = style.display || 'block';
10601
10602	if (renderWidth === null || renderWidth === '') {
10603		var displayWidth = readUsedSize(canvas, 'width');
10604		if (displayWidth !== undefined) {
10605			canvas.width = displayWidth;
10606		}
10607	}
10608
10609	if (renderHeight === null || renderHeight === '') {
10610		if (canvas.style.height === '') {
10611			// If no explicit render height and style height, let's apply the aspect ratio,
10612			// which one can be specified by the user but also by charts as default option
10613			// (i.e. options.aspectRatio). If not specified, use canvas aspect ratio of 2.
10614			canvas.height = canvas.width / (config.options.aspectRatio || 2);
10615		} else {
10616			var displayHeight = readUsedSize(canvas, 'height');
10617			if (displayWidth !== undefined) {
10618				canvas.height = displayHeight;
10619			}
10620		}
10621	}
10622
10623	return canvas;
10624}
10625
10626/**
10627 * Detects support for options object argument in addEventListener.
10628 * https://developer.mozilla.org/en-US/docs/Web/API/EventTarget/addEventListener#Safely_detecting_option_support
10629 * @private
10630 */
10631var supportsEventListenerOptions = (function() {
10632	var supports = false;
10633	try {
10634		var options = Object.defineProperty({}, 'passive', {
10635			get: function() {
10636				supports = true;
10637			}
10638		});
10639		window.addEventListener('e', null, options);
10640	} catch (e) {
10641		// continue regardless of error
10642	}
10643	return supports;
10644}());
10645
10646// Default passive to true as expected by Chrome for 'touchstart' and 'touchend' events.
10647// https://github.com/chartjs/Chart.js/issues/4287
10648var eventListenerOptions = supportsEventListenerOptions ? {passive: true} : false;
10649
10650function addEventListener(node, type, listener) {
10651	node.addEventListener(type, listener, eventListenerOptions);
10652}
10653
10654function removeEventListener(node, type, listener) {
10655	node.removeEventListener(type, listener, eventListenerOptions);
10656}
10657
10658function createEvent(type, chart, x, y, nativeEvent) {
10659	return {
10660		type: type,
10661		chart: chart,
10662		native: nativeEvent || null,
10663		x: x !== undefined ? x : null,
10664		y: y !== undefined ? y : null,
10665	};
10666}
10667
10668function fromNativeEvent(event, chart) {
10669	var type = EVENT_TYPES[event.type] || event.type;
10670	var pos = helpers.getRelativePosition(event, chart);
10671	return createEvent(type, chart, pos.x, pos.y, event);
10672}
10673
10674function throttled(fn, thisArg) {
10675	var ticking = false;
10676	var args = [];
10677
10678	return function() {
10679		args = Array.prototype.slice.call(arguments);
10680		thisArg = thisArg || this;
10681
10682		if (!ticking) {
10683			ticking = true;
10684			helpers.requestAnimFrame.call(window, function() {
10685				ticking = false;
10686				fn.apply(thisArg, args);
10687			});
10688		}
10689	};
10690}
10691
10692// Implementation based on https://github.com/marcj/css-element-queries
10693function createResizer(handler) {
10694	var resizer = document.createElement('div');
10695	var cls = CSS_PREFIX + 'size-monitor';
10696	var maxSize = 1000000;
10697	var style =
10698		'position:absolute;' +
10699		'left:0;' +
10700		'top:0;' +
10701		'right:0;' +
10702		'bottom:0;' +
10703		'overflow:hidden;' +
10704		'pointer-events:none;' +
10705		'visibility:hidden;' +
10706		'z-index:-1;';
10707
10708	resizer.style.cssText = style;
10709	resizer.className = cls;
10710	resizer.innerHTML =
10711		'<div class="' + cls + '-expand" style="' + style + '">' +
10712			'<div style="' +
10713				'position:absolute;' +
10714				'width:' + maxSize + 'px;' +
10715				'height:' + maxSize + 'px;' +
10716				'left:0;' +
10717				'top:0">' +
10718			'</div>' +
10719		'</div>' +
10720		'<div class="' + cls + '-shrink" style="' + style + '">' +
10721			'<div style="' +
10722				'position:absolute;' +
10723				'width:200%;' +
10724				'height:200%;' +
10725				'left:0; ' +
10726				'top:0">' +
10727			'</div>' +
10728		'</div>';
10729
10730	var expand = resizer.childNodes[0];
10731	var shrink = resizer.childNodes[1];
10732
10733	resizer._reset = function() {
10734		expand.scrollLeft = maxSize;
10735		expand.scrollTop = maxSize;
10736		shrink.scrollLeft = maxSize;
10737		shrink.scrollTop = maxSize;
10738	};
10739	var onScroll = function() {
10740		resizer._reset();
10741		handler();
10742	};
10743
10744	addEventListener(expand, 'scroll', onScroll.bind(expand, 'expand'));
10745	addEventListener(shrink, 'scroll', onScroll.bind(shrink, 'shrink'));
10746
10747	return resizer;
10748}
10749
10750// https://davidwalsh.name/detect-node-insertion
10751function watchForRender(node, handler) {
10752	var expando = node[EXPANDO_KEY] || (node[EXPANDO_KEY] = {});
10753	var proxy = expando.renderProxy = function(e) {
10754		if (e.animationName === CSS_RENDER_ANIMATION) {
10755			handler();
10756		}
10757	};
10758
10759	helpers.each(ANIMATION_START_EVENTS, function(type) {
10760		addEventListener(node, type, proxy);
10761	});
10762
10763	// #4737: Chrome might skip the CSS animation when the CSS_RENDER_MONITOR class
10764	// is removed then added back immediately (same animation frame?). Accessing the
10765	// `offsetParent` property will force a reflow and re-evaluate the CSS animation.
10766	// https://gist.github.com/paulirish/5d52fb081b3570c81e3a#box-metrics
10767	// https://github.com/chartjs/Chart.js/issues/4737
10768	expando.reflow = !!node.offsetParent;
10769
10770	node.classList.add(CSS_RENDER_MONITOR);
10771}
10772
10773function unwatchForRender(node) {
10774	var expando = node[EXPANDO_KEY] || {};
10775	var proxy = expando.renderProxy;
10776
10777	if (proxy) {
10778		helpers.each(ANIMATION_START_EVENTS, function(type) {
10779			removeEventListener(node, type, proxy);
10780		});
10781
10782		delete expando.renderProxy;
10783	}
10784
10785	node.classList.remove(CSS_RENDER_MONITOR);
10786}
10787
10788function addResizeListener(node, listener, chart) {
10789	var expando = node[EXPANDO_KEY] || (node[EXPANDO_KEY] = {});
10790
10791	// Let's keep track of this added resizer and thus avoid DOM query when removing it.
10792	var resizer = expando.resizer = createResizer(throttled(function() {
10793		if (expando.resizer) {
10794			return listener(createEvent('resize', chart));
10795		}
10796	}));
10797
10798	// The resizer needs to be attached to the node parent, so we first need to be
10799	// sure that `node` is attached to the DOM before injecting the resizer element.
10800	watchForRender(node, function() {
10801		if (expando.resizer) {
10802			var container = node.parentNode;
10803			if (container && container !== resizer.parentNode) {
10804				container.insertBefore(resizer, container.firstChild);
10805			}
10806
10807			// The container size might have changed, let's reset the resizer state.
10808			resizer._reset();
10809		}
10810	});
10811}
10812
10813function removeResizeListener(node) {
10814	var expando = node[EXPANDO_KEY] || {};
10815	var resizer = expando.resizer;
10816
10817	delete expando.resizer;
10818	unwatchForRender(node);
10819
10820	if (resizer && resizer.parentNode) {
10821		resizer.parentNode.removeChild(resizer);
10822	}
10823}
10824
10825function injectCSS(platform, css) {
10826	// http://stackoverflow.com/q/3922139
10827	var style = platform._style || document.createElement('style');
10828	if (!platform._style) {
10829		platform._style = style;
10830		css = '/* Chart.js */\n' + css;
10831		style.setAttribute('type', 'text/css');
10832		document.getElementsByTagName('head')[0].appendChild(style);
10833	}
10834
10835	style.appendChild(document.createTextNode(css));
10836}
10837
10838module.exports = {
10839	/**
10840	 * This property holds whether this platform is enabled for the current environment.
10841	 * Currently used by platform.js to select the proper implementation.
10842	 * @private
10843	 */
10844	_enabled: typeof window !== 'undefined' && typeof document !== 'undefined',
10845
10846	initialize: function() {
10847		var keyframes = 'from{opacity:0.99}to{opacity:1}';
10848
10849		injectCSS(this,
10850			// DOM rendering detection
10851			// https://davidwalsh.name/detect-node-insertion
10852			'@-webkit-keyframes ' + CSS_RENDER_ANIMATION + '{' + keyframes + '}' +
10853			'@keyframes ' + CSS_RENDER_ANIMATION + '{' + keyframes + '}' +
10854			'.' + CSS_RENDER_MONITOR + '{' +
10855				'-webkit-animation:' + CSS_RENDER_ANIMATION + ' 0.001s;' +
10856				'animation:' + CSS_RENDER_ANIMATION + ' 0.001s;' +
10857			'}'
10858		);
10859	},
10860
10861	acquireContext: function(item, config) {
10862		if (typeof item === 'string') {
10863			item = document.getElementById(item);
10864		} else if (item.length) {
10865			// Support for array based queries (such as jQuery)
10866			item = item[0];
10867		}
10868
10869		if (item && item.canvas) {
10870			// Support for any object associated to a canvas (including a context2d)
10871			item = item.canvas;
10872		}
10873
10874		// To prevent canvas fingerprinting, some add-ons undefine the getContext
10875		// method, for example: https://github.com/kkapsner/CanvasBlocker
10876		// https://github.com/chartjs/Chart.js/issues/2807
10877		var context = item && item.getContext && item.getContext('2d');
10878
10879		// `instanceof HTMLCanvasElement/CanvasRenderingContext2D` fails when the item is
10880		// inside an iframe or when running in a protected environment. We could guess the
10881		// types from their toString() value but let's keep things flexible and assume it's
10882		// a sufficient condition if the item has a context2D which has item as `canvas`.
10883		// https://github.com/chartjs/Chart.js/issues/3887
10884		// https://github.com/chartjs/Chart.js/issues/4102
10885		// https://github.com/chartjs/Chart.js/issues/4152
10886		if (context && context.canvas === item) {
10887			initCanvas(item, config);
10888			return context;
10889		}
10890
10891		return null;
10892	},
10893
10894	releaseContext: function(context) {
10895		var canvas = context.canvas;
10896		if (!canvas[EXPANDO_KEY]) {
10897			return;
10898		}
10899
10900		var initial = canvas[EXPANDO_KEY].initial;
10901		['height', 'width'].forEach(function(prop) {
10902			var value = initial[prop];
10903			if (helpers.isNullOrUndef(value)) {
10904				canvas.removeAttribute(prop);
10905			} else {
10906				canvas.setAttribute(prop, value);
10907			}
10908		});
10909
10910		helpers.each(initial.style || {}, function(value, key) {
10911			canvas.style[key] = value;
10912		});
10913
10914		// The canvas render size might have been changed (and thus the state stack discarded),
10915		// we can't use save() and restore() to restore the initial state. So make sure that at
10916		// least the canvas context is reset to the default state by setting the canvas width.
10917		// https://www.w3.org/TR/2011/WD-html5-20110525/the-canvas-element.html
10918		canvas.width = canvas.width;
10919
10920		delete canvas[EXPANDO_KEY];
10921	},
10922
10923	addEventListener: function(chart, type, listener) {
10924		var canvas = chart.canvas;
10925		if (type === 'resize') {
10926			// Note: the resize event is not supported on all browsers.
10927			addResizeListener(canvas, listener, chart);
10928			return;
10929		}
10930
10931		var expando = listener[EXPANDO_KEY] || (listener[EXPANDO_KEY] = {});
10932		var proxies = expando.proxies || (expando.proxies = {});
10933		var proxy = proxies[chart.id + '_' + type] = function(event) {
10934			listener(fromNativeEvent(event, chart));
10935		};
10936
10937		addEventListener(canvas, type, proxy);
10938	},
10939
10940	removeEventListener: function(chart, type, listener) {
10941		var canvas = chart.canvas;
10942		if (type === 'resize') {
10943			// Note: the resize event is not supported on all browsers.
10944			removeResizeListener(canvas, listener);
10945			return;
10946		}
10947
10948		var expando = listener[EXPANDO_KEY] || {};
10949		var proxies = expando.proxies || {};
10950		var proxy = proxies[chart.id + '_' + type];
10951		if (!proxy) {
10952			return;
10953		}
10954
10955		removeEventListener(canvas, type, proxy);
10956	}
10957};
10958
10959// DEPRECATIONS
10960
10961/**
10962 * Provided for backward compatibility, use EventTarget.addEventListener instead.
10963 * EventTarget.addEventListener compatibility: Chrome, Opera 7, Safari, FF1.5+, IE9+
10964 * @see https://developer.mozilla.org/en-US/docs/Web/API/EventTarget/addEventListener
10965 * @function Chart.helpers.addEvent
10966 * @deprecated since version 2.7.0
10967 * @todo remove at version 3
10968 * @private
10969 */
10970helpers.addEvent = addEventListener;
10971
10972/**
10973 * Provided for backward compatibility, use EventTarget.removeEventListener instead.
10974 * EventTarget.removeEventListener compatibility: Chrome, Opera 7, Safari, FF1.5+, IE9+
10975 * @see https://developer.mozilla.org/en-US/docs/Web/API/EventTarget/removeEventListener
10976 * @function Chart.helpers.removeEvent
10977 * @deprecated since version 2.7.0
10978 * @todo remove at version 3
10979 * @private
10980 */
10981helpers.removeEvent = removeEventListener;
10982
10983},{"46":46}],49:[function(require,module,exports){
10984'use strict';
10985
10986var helpers = require(46);
10987var basic = require(47);
10988var dom = require(48);
10989
10990// @TODO Make possible to select another platform at build time.
10991var implementation = dom._enabled ? dom : basic;
10992
10993/**
10994 * @namespace Chart.platform
10995 * @see https://chartjs.gitbooks.io/proposals/content/Platform.html
10996 * @since 2.4.0
10997 */
10998module.exports = helpers.extend({
10999	/**
11000	 * @since 2.7.0
11001	 */
11002	initialize: function() {},
11003
11004	/**
11005	 * Called at chart construction time, returns a context2d instance implementing
11006	 * the [W3C Canvas 2D Context API standard]{@link https://www.w3.org/TR/2dcontext/}.
11007	 * @param {*} item - The native item from which to acquire context (platform specific)
11008	 * @param {Object} options - The chart options
11009	 * @returns {CanvasRenderingContext2D} context2d instance
11010	 */
11011	acquireContext: function() {},
11012
11013	/**
11014	 * Called at chart destruction time, releases any resources associated to the context
11015	 * previously returned by the acquireContext() method.
11016	 * @param {CanvasRenderingContext2D} context - The context2d instance
11017	 * @returns {Boolean} true if the method succeeded, else false
11018	 */
11019	releaseContext: function() {},
11020
11021	/**
11022	 * Registers the specified listener on the given chart.
11023	 * @param {Chart} chart - Chart from which to listen for event
11024	 * @param {String} type - The ({@link IEvent}) type to listen for
11025	 * @param {Function} listener - Receives a notification (an object that implements
11026	 * the {@link IEvent} interface) when an event of the specified type occurs.
11027	 */
11028	addEventListener: function() {},
11029
11030	/**
11031	 * Removes the specified listener previously registered with addEventListener.
11032	 * @param {Chart} chart -Chart from which to remove the listener
11033	 * @param {String} type - The ({@link IEvent}) type to remove
11034	 * @param {Function} listener - The listener function to remove from the event target.
11035	 */
11036	removeEventListener: function() {}
11037
11038}, implementation);
11039
11040/**
11041 * @interface IPlatform
11042 * Allows abstracting platform dependencies away from the chart
11043 * @borrows Chart.platform.acquireContext as acquireContext
11044 * @borrows Chart.platform.releaseContext as releaseContext
11045 * @borrows Chart.platform.addEventListener as addEventListener
11046 * @borrows Chart.platform.removeEventListener as removeEventListener
11047 */
11048
11049/**
11050 * @interface IEvent
11051 * @prop {String} type - The event type name, possible values are:
11052 * 'contextmenu', 'mouseenter', 'mousedown', 'mousemove', 'mouseup', 'mouseout',
11053 * 'click', 'dblclick', 'keydown', 'keypress', 'keyup' and 'resize'
11054 * @prop {*} native - The original native event (null for emulated events, e.g. 'resize')
11055 * @prop {Number} x - The mouse x position, relative to the canvas (null for incompatible events)
11056 * @prop {Number} y - The mouse y position, relative to the canvas (null for incompatible events)
11057 */
11058
11059},{"46":46,"47":47,"48":48}],50:[function(require,module,exports){
11060'use strict';
11061
11062module.exports = {};
11063module.exports.filler = require(51);
11064module.exports.legend = require(52);
11065module.exports.title = require(53);
11066
11067},{"51":51,"52":52,"53":53}],51:[function(require,module,exports){
11068/**
11069 * Plugin based on discussion from the following Chart.js issues:
11070 * @see https://github.com/chartjs/Chart.js/issues/2380#issuecomment-279961569
11071 * @see https://github.com/chartjs/Chart.js/issues/2440#issuecomment-256461897
11072 */
11073
11074'use strict';
11075
11076var defaults = require(26);
11077var elements = require(41);
11078var helpers = require(46);
11079
11080defaults._set('global', {
11081	plugins: {
11082		filler: {
11083			propagate: true
11084		}
11085	}
11086});
11087
11088var mappers = {
11089	dataset: function(source) {
11090		var index = source.fill;
11091		var chart = source.chart;
11092		var meta = chart.getDatasetMeta(index);
11093		var visible = meta && chart.isDatasetVisible(index);
11094		var points = (visible && meta.dataset._children) || [];
11095		var length = points.length || 0;
11096
11097		return !length ? null : function(point, i) {
11098			return (i < length && points[i]._view) || null;
11099		};
11100	},
11101
11102	boundary: function(source) {
11103		var boundary = source.boundary;
11104		var x = boundary ? boundary.x : null;
11105		var y = boundary ? boundary.y : null;
11106
11107		return function(point) {
11108			return {
11109				x: x === null ? point.x : x,
11110				y: y === null ? point.y : y,
11111			};
11112		};
11113	}
11114};
11115
11116// @todo if (fill[0] === '#')
11117function decodeFill(el, index, count) {
11118	var model = el._model || {};
11119	var fill = model.fill;
11120	var target;
11121
11122	if (fill === undefined) {
11123		fill = !!model.backgroundColor;
11124	}
11125
11126	if (fill === false || fill === null) {
11127		return false;
11128	}
11129
11130	if (fill === true) {
11131		return 'origin';
11132	}
11133
11134	target = parseFloat(fill, 10);
11135	if (isFinite(target) && Math.floor(target) === target) {
11136		if (fill[0] === '-' || fill[0] === '+') {
11137			target = index + target;
11138		}
11139
11140		if (target === index || target < 0 || target >= count) {
11141			return false;
11142		}
11143
11144		return target;
11145	}
11146
11147	switch (fill) {
11148	// compatibility
11149	case 'bottom':
11150		return 'start';
11151	case 'top':
11152		return 'end';
11153	case 'zero':
11154		return 'origin';
11155	// supported boundaries
11156	case 'origin':
11157	case 'start':
11158	case 'end':
11159		return fill;
11160	// invalid fill values
11161	default:
11162		return false;
11163	}
11164}
11165
11166function computeBoundary(source) {
11167	var model = source.el._model || {};
11168	var scale = source.el._scale || {};
11169	var fill = source.fill;
11170	var target = null;
11171	var horizontal;
11172
11173	if (isFinite(fill)) {
11174		return null;
11175	}
11176
11177	// Backward compatibility: until v3, we still need to support boundary values set on
11178	// the model (scaleTop, scaleBottom and scaleZero) because some external plugins and
11179	// controllers might still use it (e.g. the Smith chart).
11180
11181	if (fill === 'start') {
11182		target = model.scaleBottom === undefined ? scale.bottom : model.scaleBottom;
11183	} else if (fill === 'end') {
11184		target = model.scaleTop === undefined ? scale.top : model.scaleTop;
11185	} else if (model.scaleZero !== undefined) {
11186		target = model.scaleZero;
11187	} else if (scale.getBasePosition) {
11188		target = scale.getBasePosition();
11189	} else if (scale.getBasePixel) {
11190		target = scale.getBasePixel();
11191	}
11192
11193	if (target !== undefined && target !== null) {
11194		if (target.x !== undefined && target.y !== undefined) {
11195			return target;
11196		}
11197
11198		if (typeof target === 'number' && isFinite(target)) {
11199			horizontal = scale.isHorizontal();
11200			return {
11201				x: horizontal ? target : null,
11202				y: horizontal ? null : target
11203			};
11204		}
11205	}
11206
11207	return null;
11208}
11209
11210function resolveTarget(sources, index, propagate) {
11211	var source = sources[index];
11212	var fill = source.fill;
11213	var visited = [index];
11214	var target;
11215
11216	if (!propagate) {
11217		return fill;
11218	}
11219
11220	while (fill !== false && visited.indexOf(fill) === -1) {
11221		if (!isFinite(fill)) {
11222			return fill;
11223		}
11224
11225		target = sources[fill];
11226		if (!target) {
11227			return false;
11228		}
11229
11230		if (target.visible) {
11231			return fill;
11232		}
11233
11234		visited.push(fill);
11235		fill = target.fill;
11236	}
11237
11238	return false;
11239}
11240
11241function createMapper(source) {
11242	var fill = source.fill;
11243	var type = 'dataset';
11244
11245	if (fill === false) {
11246		return null;
11247	}
11248
11249	if (!isFinite(fill)) {
11250		type = 'boundary';
11251	}
11252
11253	return mappers[type](source);
11254}
11255
11256function isDrawable(point) {
11257	return point && !point.skip;
11258}
11259
11260function drawArea(ctx, curve0, curve1, len0, len1) {
11261	var i;
11262
11263	if (!len0 || !len1) {
11264		return;
11265	}
11266
11267	// building first area curve (normal)
11268	ctx.moveTo(curve0[0].x, curve0[0].y);
11269	for (i = 1; i < len0; ++i) {
11270		helpers.canvas.lineTo(ctx, curve0[i - 1], curve0[i]);
11271	}
11272
11273	// joining the two area curves
11274	ctx.lineTo(curve1[len1 - 1].x, curve1[len1 - 1].y);
11275
11276	// building opposite area curve (reverse)
11277	for (i = len1 - 1; i > 0; --i) {
11278		helpers.canvas.lineTo(ctx, curve1[i], curve1[i - 1], true);
11279	}
11280}
11281
11282function doFill(ctx, points, mapper, view, color, loop) {
11283	var count = points.length;
11284	var span = view.spanGaps;
11285	var curve0 = [];
11286	var curve1 = [];
11287	var len0 = 0;
11288	var len1 = 0;
11289	var i, ilen, index, p0, p1, d0, d1;
11290
11291	ctx.beginPath();
11292
11293	for (i = 0, ilen = (count + !!loop); i < ilen; ++i) {
11294		index = i % count;
11295		p0 = points[index]._view;
11296		p1 = mapper(p0, index, view);
11297		d0 = isDrawable(p0);
11298		d1 = isDrawable(p1);
11299
11300		if (d0 && d1) {
11301			len0 = curve0.push(p0);
11302			len1 = curve1.push(p1);
11303		} else if (len0 && len1) {
11304			if (!span) {
11305				drawArea(ctx, curve0, curve1, len0, len1);
11306				len0 = len1 = 0;
11307				curve0 = [];
11308				curve1 = [];
11309			} else {
11310				if (d0) {
11311					curve0.push(p0);
11312				}
11313				if (d1) {
11314					curve1.push(p1);
11315				}
11316			}
11317		}
11318	}
11319
11320	drawArea(ctx, curve0, curve1, len0, len1);
11321
11322	ctx.closePath();
11323	ctx.fillStyle = color;
11324	ctx.fill();
11325}
11326
11327module.exports = {
11328	id: 'filler',
11329
11330	afterDatasetsUpdate: function(chart, options) {
11331		var count = (chart.data.datasets || []).length;
11332		var propagate = options.propagate;
11333		var sources = [];
11334		var meta, i, el, source;
11335
11336		for (i = 0; i < count; ++i) {
11337			meta = chart.getDatasetMeta(i);
11338			el = meta.dataset;
11339			source = null;
11340
11341			if (el && el._model && el instanceof elements.Line) {
11342				source = {
11343					visible: chart.isDatasetVisible(i),
11344					fill: decodeFill(el, i, count),
11345					chart: chart,
11346					el: el
11347				};
11348			}
11349
11350			meta.$filler = source;
11351			sources.push(source);
11352		}
11353
11354		for (i = 0; i < count; ++i) {
11355			source = sources[i];
11356			if (!source) {
11357				continue;
11358			}
11359
11360			source.fill = resolveTarget(sources, i, propagate);
11361			source.boundary = computeBoundary(source);
11362			source.mapper = createMapper(source);
11363		}
11364	},
11365
11366	beforeDatasetDraw: function(chart, args) {
11367		var meta = args.meta.$filler;
11368		if (!meta) {
11369			return;
11370		}
11371
11372		var ctx = chart.ctx;
11373		var el = meta.el;
11374		var view = el._view;
11375		var points = el._children || [];
11376		var mapper = meta.mapper;
11377		var color = view.backgroundColor || defaults.global.defaultColor;
11378
11379		if (mapper && color && points.length) {
11380			helpers.canvas.clipArea(ctx, chart.chartArea);
11381			doFill(ctx, points, mapper, view, color, el._loop);
11382			helpers.canvas.unclipArea(ctx);
11383		}
11384	}
11385};
11386
11387},{"26":26,"41":41,"46":46}],52:[function(require,module,exports){
11388'use strict';
11389
11390var defaults = require(26);
11391var Element = require(27);
11392var helpers = require(46);
11393var layouts = require(31);
11394
11395var noop = helpers.noop;
11396
11397defaults._set('global', {
11398	legend: {
11399		display: true,
11400		position: 'top',
11401		fullWidth: true,
11402		reverse: false,
11403		weight: 1000,
11404
11405		// a callback that will handle
11406		onClick: function(e, legendItem) {
11407			var index = legendItem.datasetIndex;
11408			var ci = this.chart;
11409			var meta = ci.getDatasetMeta(index);
11410
11411			// See controller.isDatasetVisible comment
11412			meta.hidden = meta.hidden === null ? !ci.data.datasets[index].hidden : null;
11413
11414			// We hid a dataset ... rerender the chart
11415			ci.update();
11416		},
11417
11418		onHover: null,
11419
11420		labels: {
11421			boxWidth: 40,
11422			padding: 10,
11423			// Generates labels shown in the legend
11424			// Valid properties to return:
11425			// text : text to display
11426			// fillStyle : fill of coloured box
11427			// strokeStyle: stroke of coloured box
11428			// hidden : if this legend item refers to a hidden item
11429			// lineCap : cap style for line
11430			// lineDash
11431			// lineDashOffset :
11432			// lineJoin :
11433			// lineWidth :
11434			generateLabels: function(chart) {
11435				var data = chart.data;
11436				return helpers.isArray(data.datasets) ? data.datasets.map(function(dataset, i) {
11437					return {
11438						text: dataset.label,
11439						fillStyle: (!helpers.isArray(dataset.backgroundColor) ? dataset.backgroundColor : dataset.backgroundColor[0]),
11440						hidden: !chart.isDatasetVisible(i),
11441						lineCap: dataset.borderCapStyle,
11442						lineDash: dataset.borderDash,
11443						lineDashOffset: dataset.borderDashOffset,
11444						lineJoin: dataset.borderJoinStyle,
11445						lineWidth: dataset.borderWidth,
11446						strokeStyle: dataset.borderColor,
11447						pointStyle: dataset.pointStyle,
11448
11449						// Below is extra data used for toggling the datasets
11450						datasetIndex: i
11451					};
11452				}, this) : [];
11453			}
11454		}
11455	},
11456
11457	legendCallback: function(chart) {
11458		var text = [];
11459		text.push('<ul class="' + chart.id + '-legend">');
11460		for (var i = 0; i < chart.data.datasets.length; i++) {
11461			text.push('<li><span style="background-color:' + chart.data.datasets[i].backgroundColor + '"></span>');
11462			if (chart.data.datasets[i].label) {
11463				text.push(chart.data.datasets[i].label);
11464			}
11465			text.push('</li>');
11466		}
11467		text.push('</ul>');
11468		return text.join('');
11469	}
11470});
11471
11472/**
11473 * Helper function to get the box width based on the usePointStyle option
11474 * @param labelopts {Object} the label options on the legend
11475 * @param fontSize {Number} the label font size
11476 * @return {Number} width of the color box area
11477 */
11478function getBoxWidth(labelOpts, fontSize) {
11479	return labelOpts.usePointStyle ?
11480		fontSize * Math.SQRT2 :
11481		labelOpts.boxWidth;
11482}
11483
11484/**
11485 * IMPORTANT: this class is exposed publicly as Chart.Legend, backward compatibility required!
11486 */
11487var Legend = Element.extend({
11488
11489	initialize: function(config) {
11490		helpers.extend(this, config);
11491
11492		// Contains hit boxes for each dataset (in dataset order)
11493		this.legendHitBoxes = [];
11494
11495		// Are we in doughnut mode which has a different data type
11496		this.doughnutMode = false;
11497	},
11498
11499	// These methods are ordered by lifecycle. Utilities then follow.
11500	// Any function defined here is inherited by all legend types.
11501	// Any function can be extended by the legend type
11502
11503	beforeUpdate: noop,
11504	update: function(maxWidth, maxHeight, margins) {
11505		var me = this;
11506
11507		// Update Lifecycle - Probably don't want to ever extend or overwrite this function ;)
11508		me.beforeUpdate();
11509
11510		// Absorb the master measurements
11511		me.maxWidth = maxWidth;
11512		me.maxHeight = maxHeight;
11513		me.margins = margins;
11514
11515		// Dimensions
11516		me.beforeSetDimensions();
11517		me.setDimensions();
11518		me.afterSetDimensions();
11519		// Labels
11520		me.beforeBuildLabels();
11521		me.buildLabels();
11522		me.afterBuildLabels();
11523
11524		// Fit
11525		me.beforeFit();
11526		me.fit();
11527		me.afterFit();
11528		//
11529		me.afterUpdate();
11530
11531		return me.minSize;
11532	},
11533	afterUpdate: noop,
11534
11535	//
11536
11537	beforeSetDimensions: noop,
11538	setDimensions: function() {
11539		var me = this;
11540		// Set the unconstrained dimension before label rotation
11541		if (me.isHorizontal()) {
11542			// Reset position before calculating rotation
11543			me.width = me.maxWidth;
11544			me.left = 0;
11545			me.right = me.width;
11546		} else {
11547			me.height = me.maxHeight;
11548
11549			// Reset position before calculating rotation
11550			me.top = 0;
11551			me.bottom = me.height;
11552		}
11553
11554		// Reset padding
11555		me.paddingLeft = 0;
11556		me.paddingTop = 0;
11557		me.paddingRight = 0;
11558		me.paddingBottom = 0;
11559
11560		// Reset minSize
11561		me.minSize = {
11562			width: 0,
11563			height: 0
11564		};
11565	},
11566	afterSetDimensions: noop,
11567
11568	//
11569
11570	beforeBuildLabels: noop,
11571	buildLabels: function() {
11572		var me = this;
11573		var labelOpts = me.options.labels || {};
11574		var legendItems = helpers.callback(labelOpts.generateLabels, [me.chart], me) || [];
11575
11576		if (labelOpts.filter) {
11577			legendItems = legendItems.filter(function(item) {
11578				return labelOpts.filter(item, me.chart.data);
11579			});
11580		}
11581
11582		if (me.options.reverse) {
11583			legendItems.reverse();
11584		}
11585
11586		me.legendItems = legendItems;
11587	},
11588	afterBuildLabels: noop,
11589
11590	//
11591
11592	beforeFit: noop,
11593	fit: function() {
11594		var me = this;
11595		var opts = me.options;
11596		var labelOpts = opts.labels;
11597		var display = opts.display;
11598
11599		var ctx = me.ctx;
11600
11601		var globalDefault = defaults.global;
11602		var valueOrDefault = helpers.valueOrDefault;
11603		var fontSize = valueOrDefault(labelOpts.fontSize, globalDefault.defaultFontSize);
11604		var fontStyle = valueOrDefault(labelOpts.fontStyle, globalDefault.defaultFontStyle);
11605		var fontFamily = valueOrDefault(labelOpts.fontFamily, globalDefault.defaultFontFamily);
11606		var labelFont = helpers.fontString(fontSize, fontStyle, fontFamily);
11607
11608		// Reset hit boxes
11609		var hitboxes = me.legendHitBoxes = [];
11610
11611		var minSize = me.minSize;
11612		var isHorizontal = me.isHorizontal();
11613
11614		if (isHorizontal) {
11615			minSize.width = me.maxWidth; // fill all the width
11616			minSize.height = display ? 10 : 0;
11617		} else {
11618			minSize.width = display ? 10 : 0;
11619			minSize.height = me.maxHeight; // fill all the height
11620		}
11621
11622		// Increase sizes here
11623		if (display) {
11624			ctx.font = labelFont;
11625
11626			if (isHorizontal) {
11627				// Labels
11628
11629				// Width of each line of legend boxes. Labels wrap onto multiple lines when there are too many to fit on one
11630				var lineWidths = me.lineWidths = [0];
11631				var totalHeight = me.legendItems.length ? fontSize + (labelOpts.padding) : 0;
11632
11633				ctx.textAlign = 'left';
11634				ctx.textBaseline = 'top';
11635
11636				helpers.each(me.legendItems, function(legendItem, i) {
11637					var boxWidth = getBoxWidth(labelOpts, fontSize);
11638					var width = boxWidth + (fontSize / 2) + ctx.measureText(legendItem.text).width;
11639
11640					if (lineWidths[lineWidths.length - 1] + width + labelOpts.padding >= me.width) {
11641						totalHeight += fontSize + (labelOpts.padding);
11642						lineWidths[lineWidths.length] = me.left;
11643					}
11644
11645					// Store the hitbox width and height here. Final position will be updated in `draw`
11646					hitboxes[i] = {
11647						left: 0,
11648						top: 0,
11649						width: width,
11650						height: fontSize
11651					};
11652
11653					lineWidths[lineWidths.length - 1] += width + labelOpts.padding;
11654				});
11655
11656				minSize.height += totalHeight;
11657
11658			} else {
11659				var vPadding = labelOpts.padding;
11660				var columnWidths = me.columnWidths = [];
11661				var totalWidth = labelOpts.padding;
11662				var currentColWidth = 0;
11663				var currentColHeight = 0;
11664				var itemHeight = fontSize + vPadding;
11665
11666				helpers.each(me.legendItems, function(legendItem, i) {
11667					var boxWidth = getBoxWidth(labelOpts, fontSize);
11668					var itemWidth = boxWidth + (fontSize / 2) + ctx.measureText(legendItem.text).width;
11669
11670					// If too tall, go to new column
11671					if (currentColHeight + itemHeight > minSize.height) {
11672						totalWidth += currentColWidth + labelOpts.padding;
11673						columnWidths.push(currentColWidth); // previous column width
11674
11675						currentColWidth = 0;
11676						currentColHeight = 0;
11677					}
11678
11679					// Get max width
11680					currentColWidth = Math.max(currentColWidth, itemWidth);
11681					currentColHeight += itemHeight;
11682
11683					// Store the hitbox width and height here. Final position will be updated in `draw`
11684					hitboxes[i] = {
11685						left: 0,
11686						top: 0,
11687						width: itemWidth,
11688						height: fontSize
11689					};
11690				});
11691
11692				totalWidth += currentColWidth;
11693				columnWidths.push(currentColWidth);
11694				minSize.width += totalWidth;
11695			}
11696		}
11697
11698		me.width = minSize.width;
11699		me.height = minSize.height;
11700	},
11701	afterFit: noop,
11702
11703	// Shared Methods
11704	isHorizontal: function() {
11705		return this.options.position === 'top' || this.options.position === 'bottom';
11706	},
11707
11708	// Actually draw the legend on the canvas
11709	draw: function() {
11710		var me = this;
11711		var opts = me.options;
11712		var labelOpts = opts.labels;
11713		var globalDefault = defaults.global;
11714		var lineDefault = globalDefault.elements.line;
11715		var legendWidth = me.width;
11716		var lineWidths = me.lineWidths;
11717
11718		if (opts.display) {
11719			var ctx = me.ctx;
11720			var valueOrDefault = helpers.valueOrDefault;
11721			var fontColor = valueOrDefault(labelOpts.fontColor, globalDefault.defaultFontColor);
11722			var fontSize = valueOrDefault(labelOpts.fontSize, globalDefault.defaultFontSize);
11723			var fontStyle = valueOrDefault(labelOpts.fontStyle, globalDefault.defaultFontStyle);
11724			var fontFamily = valueOrDefault(labelOpts.fontFamily, globalDefault.defaultFontFamily);
11725			var labelFont = helpers.fontString(fontSize, fontStyle, fontFamily);
11726			var cursor;
11727
11728			// Canvas setup
11729			ctx.textAlign = 'left';
11730			ctx.textBaseline = 'middle';
11731			ctx.lineWidth = 0.5;
11732			ctx.strokeStyle = fontColor; // for strikethrough effect
11733			ctx.fillStyle = fontColor; // render in correct colour
11734			ctx.font = labelFont;
11735
11736			var boxWidth = getBoxWidth(labelOpts, fontSize);
11737			var hitboxes = me.legendHitBoxes;
11738
11739			// current position
11740			var drawLegendBox = function(x, y, legendItem) {
11741				if (isNaN(boxWidth) || boxWidth <= 0) {
11742					return;
11743				}
11744
11745				// Set the ctx for the box
11746				ctx.save();
11747
11748				ctx.fillStyle = valueOrDefault(legendItem.fillStyle, globalDefault.defaultColor);
11749				ctx.lineCap = valueOrDefault(legendItem.lineCap, lineDefault.borderCapStyle);
11750				ctx.lineDashOffset = valueOrDefault(legendItem.lineDashOffset, lineDefault.borderDashOffset);
11751				ctx.lineJoin = valueOrDefault(legendItem.lineJoin, lineDefault.borderJoinStyle);
11752				ctx.lineWidth = valueOrDefault(legendItem.lineWidth, lineDefault.borderWidth);
11753				ctx.strokeStyle = valueOrDefault(legendItem.strokeStyle, globalDefault.defaultColor);
11754				var isLineWidthZero = (valueOrDefault(legendItem.lineWidth, lineDefault.borderWidth) === 0);
11755
11756				if (ctx.setLineDash) {
11757					// IE 9 and 10 do not support line dash
11758					ctx.setLineDash(valueOrDefault(legendItem.lineDash, lineDefault.borderDash));
11759				}
11760
11761				if (opts.labels && opts.labels.usePointStyle) {
11762					// Recalculate x and y for drawPoint() because its expecting
11763					// x and y to be center of figure (instead of top left)
11764					var radius = fontSize * Math.SQRT2 / 2;
11765					var offSet = radius / Math.SQRT2;
11766					var centerX = x + offSet;
11767					var centerY = y + offSet;
11768
11769					// Draw pointStyle as legend symbol
11770					helpers.canvas.drawPoint(ctx, legendItem.pointStyle, radius, centerX, centerY);
11771				} else {
11772					// Draw box as legend symbol
11773					if (!isLineWidthZero) {
11774						ctx.strokeRect(x, y, boxWidth, fontSize);
11775					}
11776					ctx.fillRect(x, y, boxWidth, fontSize);
11777				}
11778
11779				ctx.restore();
11780			};
11781			var fillText = function(x, y, legendItem, textWidth) {
11782				var halfFontSize = fontSize / 2;
11783				var xLeft = boxWidth + halfFontSize + x;
11784				var yMiddle = y + halfFontSize;
11785
11786				ctx.fillText(legendItem.text, xLeft, yMiddle);
11787
11788				if (legendItem.hidden) {
11789					// Strikethrough the text if hidden
11790					ctx.beginPath();
11791					ctx.lineWidth = 2;
11792					ctx.moveTo(xLeft, yMiddle);
11793					ctx.lineTo(xLeft + textWidth, yMiddle);
11794					ctx.stroke();
11795				}
11796			};
11797
11798			// Horizontal
11799			var isHorizontal = me.isHorizontal();
11800			if (isHorizontal) {
11801				cursor = {
11802					x: me.left + ((legendWidth - lineWidths[0]) / 2),
11803					y: me.top + labelOpts.padding,
11804					line: 0
11805				};
11806			} else {
11807				cursor = {
11808					x: me.left + labelOpts.padding,
11809					y: me.top + labelOpts.padding,
11810					line: 0
11811				};
11812			}
11813
11814			var itemHeight = fontSize + labelOpts.padding;
11815			helpers.each(me.legendItems, function(legendItem, i) {
11816				var textWidth = ctx.measureText(legendItem.text).width;
11817				var width = boxWidth + (fontSize / 2) + textWidth;
11818				var x = cursor.x;
11819				var y = cursor.y;
11820
11821				if (isHorizontal) {
11822					if (x + width >= legendWidth) {
11823						y = cursor.y += itemHeight;
11824						cursor.line++;
11825						x = cursor.x = me.left + ((legendWidth - lineWidths[cursor.line]) / 2);
11826					}
11827				} else if (y + itemHeight > me.bottom) {
11828					x = cursor.x = x + me.columnWidths[cursor.line] + labelOpts.padding;
11829					y = cursor.y = me.top + labelOpts.padding;
11830					cursor.line++;
11831				}
11832
11833				drawLegendBox(x, y, legendItem);
11834
11835				hitboxes[i].left = x;
11836				hitboxes[i].top = y;
11837
11838				// Fill the actual label
11839				fillText(x, y, legendItem, textWidth);
11840
11841				if (isHorizontal) {
11842					cursor.x += width + (labelOpts.padding);
11843				} else {
11844					cursor.y += itemHeight;
11845				}
11846
11847			});
11848		}
11849	},
11850
11851	/**
11852	 * Handle an event
11853	 * @private
11854	 * @param {IEvent} event - The event to handle
11855	 * @return {Boolean} true if a change occured
11856	 */
11857	handleEvent: function(e) {
11858		var me = this;
11859		var opts = me.options;
11860		var type = e.type === 'mouseup' ? 'click' : e.type;
11861		var changed = false;
11862
11863		if (type === 'mousemove') {
11864			if (!opts.onHover) {
11865				return;
11866			}
11867		} else if (type === 'click') {
11868			if (!opts.onClick) {
11869				return;
11870			}
11871		} else {
11872			return;
11873		}
11874
11875		// Chart event already has relative position in it
11876		var x = e.x;
11877		var y = e.y;
11878
11879		if (x >= me.left && x <= me.right && y >= me.top && y <= me.bottom) {
11880			// See if we are touching one of the dataset boxes
11881			var lh = me.legendHitBoxes;
11882			for (var i = 0; i < lh.length; ++i) {
11883				var hitBox = lh[i];
11884
11885				if (x >= hitBox.left && x <= hitBox.left + hitBox.width && y >= hitBox.top && y <= hitBox.top + hitBox.height) {
11886					// Touching an element
11887					if (type === 'click') {
11888						// use e.native for backwards compatibility
11889						opts.onClick.call(me, e.native, me.legendItems[i]);
11890						changed = true;
11891						break;
11892					} else if (type === 'mousemove') {
11893						// use e.native for backwards compatibility
11894						opts.onHover.call(me, e.native, me.legendItems[i]);
11895						changed = true;
11896						break;
11897					}
11898				}
11899			}
11900		}
11901
11902		return changed;
11903	}
11904});
11905
11906function createNewLegendAndAttach(chart, legendOpts) {
11907	var legend = new Legend({
11908		ctx: chart.ctx,
11909		options: legendOpts,
11910		chart: chart
11911	});
11912
11913	layouts.configure(chart, legend, legendOpts);
11914	layouts.addBox(chart, legend);
11915	chart.legend = legend;
11916}
11917
11918module.exports = {
11919	id: 'legend',
11920
11921	/**
11922	 * Backward compatibility: since 2.1.5, the legend is registered as a plugin, making
11923	 * Chart.Legend obsolete. To avoid a breaking change, we export the Legend as part of
11924	 * the plugin, which one will be re-exposed in the chart.js file.
11925	 * https://github.com/chartjs/Chart.js/pull/2640
11926	 * @private
11927	 */
11928	_element: Legend,
11929
11930	beforeInit: function(chart) {
11931		var legendOpts = chart.options.legend;
11932
11933		if (legendOpts) {
11934			createNewLegendAndAttach(chart, legendOpts);
11935		}
11936	},
11937
11938	beforeUpdate: function(chart) {
11939		var legendOpts = chart.options.legend;
11940		var legend = chart.legend;
11941
11942		if (legendOpts) {
11943			helpers.mergeIf(legendOpts, defaults.global.legend);
11944
11945			if (legend) {
11946				layouts.configure(chart, legend, legendOpts);
11947				legend.options = legendOpts;
11948			} else {
11949				createNewLegendAndAttach(chart, legendOpts);
11950			}
11951		} else if (legend) {
11952			layouts.removeBox(chart, legend);
11953			delete chart.legend;
11954		}
11955	},
11956
11957	afterEvent: function(chart, e) {
11958		var legend = chart.legend;
11959		if (legend) {
11960			legend.handleEvent(e);
11961		}
11962	}
11963};
11964
11965},{"26":26,"27":27,"31":31,"46":46}],53:[function(require,module,exports){
11966'use strict';
11967
11968var defaults = require(26);
11969var Element = require(27);
11970var helpers = require(46);
11971var layouts = require(31);
11972
11973var noop = helpers.noop;
11974
11975defaults._set('global', {
11976	title: {
11977		display: false,
11978		fontStyle: 'bold',
11979		fullWidth: true,
11980		lineHeight: 1.2,
11981		padding: 10,
11982		position: 'top',
11983		text: '',
11984		weight: 2000         // by default greater than legend (1000) to be above
11985	}
11986});
11987
11988/**
11989 * IMPORTANT: this class is exposed publicly as Chart.Legend, backward compatibility required!
11990 */
11991var Title = Element.extend({
11992	initialize: function(config) {
11993		var me = this;
11994		helpers.extend(me, config);
11995
11996		// Contains hit boxes for each dataset (in dataset order)
11997		me.legendHitBoxes = [];
11998	},
11999
12000	// These methods are ordered by lifecycle. Utilities then follow.
12001
12002	beforeUpdate: noop,
12003	update: function(maxWidth, maxHeight, margins) {
12004		var me = this;
12005
12006		// Update Lifecycle - Probably don't want to ever extend or overwrite this function ;)
12007		me.beforeUpdate();
12008
12009		// Absorb the master measurements
12010		me.maxWidth = maxWidth;
12011		me.maxHeight = maxHeight;
12012		me.margins = margins;
12013
12014		// Dimensions
12015		me.beforeSetDimensions();
12016		me.setDimensions();
12017		me.afterSetDimensions();
12018		// Labels
12019		me.beforeBuildLabels();
12020		me.buildLabels();
12021		me.afterBuildLabels();
12022
12023		// Fit
12024		me.beforeFit();
12025		me.fit();
12026		me.afterFit();
12027		//
12028		me.afterUpdate();
12029
12030		return me.minSize;
12031
12032	},
12033	afterUpdate: noop,
12034
12035	//
12036
12037	beforeSetDimensions: noop,
12038	setDimensions: function() {
12039		var me = this;
12040		// Set the unconstrained dimension before label rotation
12041		if (me.isHorizontal()) {
12042			// Reset position before calculating rotation
12043			me.width = me.maxWidth;
12044			me.left = 0;
12045			me.right = me.width;
12046		} else {
12047			me.height = me.maxHeight;
12048
12049			// Reset position before calculating rotation
12050			me.top = 0;
12051			me.bottom = me.height;
12052		}
12053
12054		// Reset padding
12055		me.paddingLeft = 0;
12056		me.paddingTop = 0;
12057		me.paddingRight = 0;
12058		me.paddingBottom = 0;
12059
12060		// Reset minSize
12061		me.minSize = {
12062			width: 0,
12063			height: 0
12064		};
12065	},
12066	afterSetDimensions: noop,
12067
12068	//
12069
12070	beforeBuildLabels: noop,
12071	buildLabels: noop,
12072	afterBuildLabels: noop,
12073
12074	//
12075
12076	beforeFit: noop,
12077	fit: function() {
12078		var me = this;
12079		var valueOrDefault = helpers.valueOrDefault;
12080		var opts = me.options;
12081		var display = opts.display;
12082		var fontSize = valueOrDefault(opts.fontSize, defaults.global.defaultFontSize);
12083		var minSize = me.minSize;
12084		var lineCount = helpers.isArray(opts.text) ? opts.text.length : 1;
12085		var lineHeight = helpers.options.toLineHeight(opts.lineHeight, fontSize);
12086		var textSize = display ? (lineCount * lineHeight) + (opts.padding * 2) : 0;
12087
12088		if (me.isHorizontal()) {
12089			minSize.width = me.maxWidth; // fill all the width
12090			minSize.height = textSize;
12091		} else {
12092			minSize.width = textSize;
12093			minSize.height = me.maxHeight; // fill all the height
12094		}
12095
12096		me.width = minSize.width;
12097		me.height = minSize.height;
12098
12099	},
12100	afterFit: noop,
12101
12102	// Shared Methods
12103	isHorizontal: function() {
12104		var pos = this.options.position;
12105		return pos === 'top' || pos === 'bottom';
12106	},
12107
12108	// Actually draw the title block on the canvas
12109	draw: function() {
12110		var me = this;
12111		var ctx = me.ctx;
12112		var valueOrDefault = helpers.valueOrDefault;
12113		var opts = me.options;
12114		var globalDefaults = defaults.global;
12115
12116		if (opts.display) {
12117			var fontSize = valueOrDefault(opts.fontSize, globalDefaults.defaultFontSize);
12118			var fontStyle = valueOrDefault(opts.fontStyle, globalDefaults.defaultFontStyle);
12119			var fontFamily = valueOrDefault(opts.fontFamily, globalDefaults.defaultFontFamily);
12120			var titleFont = helpers.fontString(fontSize, fontStyle, fontFamily);
12121			var lineHeight = helpers.options.toLineHeight(opts.lineHeight, fontSize);
12122			var offset = lineHeight / 2 + opts.padding;
12123			var rotation = 0;
12124			var top = me.top;
12125			var left = me.left;
12126			var bottom = me.bottom;
12127			var right = me.right;
12128			var maxWidth, titleX, titleY;
12129
12130			ctx.fillStyle = valueOrDefault(opts.fontColor, globalDefaults.defaultFontColor); // render in correct colour
12131			ctx.font = titleFont;
12132
12133			// Horizontal
12134			if (me.isHorizontal()) {
12135				titleX = left + ((right - left) / 2); // midpoint of the width
12136				titleY = top + offset;
12137				maxWidth = right - left;
12138			} else {
12139				titleX = opts.position === 'left' ? left + offset : right - offset;
12140				titleY = top + ((bottom - top) / 2);
12141				maxWidth = bottom - top;
12142				rotation = Math.PI * (opts.position === 'left' ? -0.5 : 0.5);
12143			}
12144
12145			ctx.save();
12146			ctx.translate(titleX, titleY);
12147			ctx.rotate(rotation);
12148			ctx.textAlign = 'center';
12149			ctx.textBaseline = 'middle';
12150
12151			var text = opts.text;
12152			if (helpers.isArray(text)) {
12153				var y = 0;
12154				for (var i = 0; i < text.length; ++i) {
12155					ctx.fillText(text[i], 0, y, maxWidth);
12156					y += lineHeight;
12157				}
12158			} else {
12159				ctx.fillText(text, 0, 0, maxWidth);
12160			}
12161
12162			ctx.restore();
12163		}
12164	}
12165});
12166
12167function createNewTitleBlockAndAttach(chart, titleOpts) {
12168	var title = new Title({
12169		ctx: chart.ctx,
12170		options: titleOpts,
12171		chart: chart
12172	});
12173
12174	layouts.configure(chart, title, titleOpts);
12175	layouts.addBox(chart, title);
12176	chart.titleBlock = title;
12177}
12178
12179module.exports = {
12180	id: 'title',
12181
12182	/**
12183	 * Backward compatibility: since 2.1.5, the title is registered as a plugin, making
12184	 * Chart.Title obsolete. To avoid a breaking change, we export the Title as part of
12185	 * the plugin, which one will be re-exposed in the chart.js file.
12186	 * https://github.com/chartjs/Chart.js/pull/2640
12187	 * @private
12188	 */
12189	_element: Title,
12190
12191	beforeInit: function(chart) {
12192		var titleOpts = chart.options.title;
12193
12194		if (titleOpts) {
12195			createNewTitleBlockAndAttach(chart, titleOpts);
12196		}
12197	},
12198
12199	beforeUpdate: function(chart) {
12200		var titleOpts = chart.options.title;
12201		var titleBlock = chart.titleBlock;
12202
12203		if (titleOpts) {
12204			helpers.mergeIf(titleOpts, defaults.global.title);
12205
12206			if (titleBlock) {
12207				layouts.configure(chart, titleBlock, titleOpts);
12208				titleBlock.options = titleOpts;
12209			} else {
12210				createNewTitleBlockAndAttach(chart, titleOpts);
12211			}
12212		} else if (titleBlock) {
12213			layouts.removeBox(chart, titleBlock);
12214			delete chart.titleBlock;
12215		}
12216	}
12217};
12218
12219},{"26":26,"27":27,"31":31,"46":46}],54:[function(require,module,exports){
12220'use strict';
12221
12222var Scale = require(33);
12223var scaleService = require(34);
12224
12225module.exports = function() {
12226
12227	// Default config for a category scale
12228	var defaultConfig = {
12229		position: 'bottom'
12230	};
12231
12232	var DatasetScale = Scale.extend({
12233		/**
12234		* Internal function to get the correct labels. If data.xLabels or data.yLabels are defined, use those
12235		* else fall back to data.labels
12236		* @private
12237		*/
12238		getLabels: function() {
12239			var data = this.chart.data;
12240			return this.options.labels || (this.isHorizontal() ? data.xLabels : data.yLabels) || data.labels;
12241		},
12242
12243		determineDataLimits: function() {
12244			var me = this;
12245			var labels = me.getLabels();
12246			me.minIndex = 0;
12247			me.maxIndex = labels.length - 1;
12248			var findIndex;
12249
12250			if (me.options.ticks.min !== undefined) {
12251				// user specified min value
12252				findIndex = labels.indexOf(me.options.ticks.min);
12253				me.minIndex = findIndex !== -1 ? findIndex : me.minIndex;
12254			}
12255
12256			if (me.options.ticks.max !== undefined) {
12257				// user specified max value
12258				findIndex = labels.indexOf(me.options.ticks.max);
12259				me.maxIndex = findIndex !== -1 ? findIndex : me.maxIndex;
12260			}
12261
12262			me.min = labels[me.minIndex];
12263			me.max = labels[me.maxIndex];
12264		},
12265
12266		buildTicks: function() {
12267			var me = this;
12268			var labels = me.getLabels();
12269			// If we are viewing some subset of labels, slice the original array
12270			me.ticks = (me.minIndex === 0 && me.maxIndex === labels.length - 1) ? labels : labels.slice(me.minIndex, me.maxIndex + 1);
12271		},
12272
12273		getLabelForIndex: function(index, datasetIndex) {
12274			var me = this;
12275			var data = me.chart.data;
12276			var isHorizontal = me.isHorizontal();
12277
12278			if (data.yLabels && !isHorizontal) {
12279				return me.getRightValue(data.datasets[datasetIndex].data[index]);
12280			}
12281			return me.ticks[index - me.minIndex];
12282		},
12283
12284		// Used to get data value locations.  Value can either be an index or a numerical value
12285		getPixelForValue: function(value, index) {
12286			var me = this;
12287			var offset = me.options.offset;
12288			// 1 is added because we need the length but we have the indexes
12289			var offsetAmt = Math.max((me.maxIndex + 1 - me.minIndex - (offset ? 0 : 1)), 1);
12290
12291			// If value is a data object, then index is the index in the data array,
12292			// not the index of the scale. We need to change that.
12293			var valueCategory;
12294			if (value !== undefined && value !== null) {
12295				valueCategory = me.isHorizontal() ? value.x : value.y;
12296			}
12297			if (valueCategory !== undefined || (value !== undefined && isNaN(index))) {
12298				var labels = me.getLabels();
12299				value = valueCategory || value;
12300				var idx = labels.indexOf(value);
12301				index = idx !== -1 ? idx : index;
12302			}
12303
12304			if (me.isHorizontal()) {
12305				var valueWidth = me.width / offsetAmt;
12306				var widthOffset = (valueWidth * (index - me.minIndex));
12307
12308				if (offset) {
12309					widthOffset += (valueWidth / 2);
12310				}
12311
12312				return me.left + Math.round(widthOffset);
12313			}
12314			var valueHeight = me.height / offsetAmt;
12315			var heightOffset = (valueHeight * (index - me.minIndex));
12316
12317			if (offset) {
12318				heightOffset += (valueHeight / 2);
12319			}
12320
12321			return me.top + Math.round(heightOffset);
12322		},
12323		getPixelForTick: function(index) {
12324			return this.getPixelForValue(this.ticks[index], index + this.minIndex, null);
12325		},
12326		getValueForPixel: function(pixel) {
12327			var me = this;
12328			var offset = me.options.offset;
12329			var value;
12330			var offsetAmt = Math.max((me._ticks.length - (offset ? 0 : 1)), 1);
12331			var horz = me.isHorizontal();
12332			var valueDimension = (horz ? me.width : me.height) / offsetAmt;
12333
12334			pixel -= horz ? me.left : me.top;
12335
12336			if (offset) {
12337				pixel -= (valueDimension / 2);
12338			}
12339
12340			if (pixel <= 0) {
12341				value = 0;
12342			} else {
12343				value = Math.round(pixel / valueDimension);
12344			}
12345
12346			return value + me.minIndex;
12347		},
12348		getBasePixel: function() {
12349			return this.bottom;
12350		}
12351	});
12352
12353	scaleService.registerScaleType('category', DatasetScale, defaultConfig);
12354};
12355
12356},{"33":33,"34":34}],55:[function(require,module,exports){
12357'use strict';
12358
12359var defaults = require(26);
12360var helpers = require(46);
12361var scaleService = require(34);
12362var Ticks = require(35);
12363
12364module.exports = function(Chart) {
12365
12366	var defaultConfig = {
12367		position: 'left',
12368		ticks: {
12369			callback: Ticks.formatters.linear
12370		}
12371	};
12372
12373	var LinearScale = Chart.LinearScaleBase.extend({
12374
12375		determineDataLimits: function() {
12376			var me = this;
12377			var opts = me.options;
12378			var chart = me.chart;
12379			var data = chart.data;
12380			var datasets = data.datasets;
12381			var isHorizontal = me.isHorizontal();
12382			var DEFAULT_MIN = 0;
12383			var DEFAULT_MAX = 1;
12384
12385			function IDMatches(meta) {
12386				return isHorizontal ? meta.xAxisID === me.id : meta.yAxisID === me.id;
12387			}
12388
12389			// First Calculate the range
12390			me.min = null;
12391			me.max = null;
12392
12393			var hasStacks = opts.stacked;
12394			if (hasStacks === undefined) {
12395				helpers.each(datasets, function(dataset, datasetIndex) {
12396					if (hasStacks) {
12397						return;
12398					}
12399
12400					var meta = chart.getDatasetMeta(datasetIndex);
12401					if (chart.isDatasetVisible(datasetIndex) && IDMatches(meta) &&
12402						meta.stack !== undefined) {
12403						hasStacks = true;
12404					}
12405				});
12406			}
12407
12408			if (opts.stacked || hasStacks) {
12409				var valuesPerStack = {};
12410
12411				helpers.each(datasets, function(dataset, datasetIndex) {
12412					var meta = chart.getDatasetMeta(datasetIndex);
12413					var key = [
12414						meta.type,
12415						// we have a separate stack for stack=undefined datasets when the opts.stacked is undefined
12416						((opts.stacked === undefined && meta.stack === undefined) ? datasetIndex : ''),
12417						meta.stack
12418					].join('.');
12419
12420					if (valuesPerStack[key] === undefined) {
12421						valuesPerStack[key] = {
12422							positiveValues: [],
12423							negativeValues: []
12424						};
12425					}
12426
12427					// Store these per type
12428					var positiveValues = valuesPerStack[key].positiveValues;
12429					var negativeValues = valuesPerStack[key].negativeValues;
12430
12431					if (chart.isDatasetVisible(datasetIndex) && IDMatches(meta)) {
12432						helpers.each(dataset.data, function(rawValue, index) {
12433							var value = +me.getRightValue(rawValue);
12434							if (isNaN(value) || meta.data[index].hidden) {
12435								return;
12436							}
12437
12438							positiveValues[index] = positiveValues[index] || 0;
12439							negativeValues[index] = negativeValues[index] || 0;
12440
12441							if (opts.relativePoints) {
12442								positiveValues[index] = 100;
12443							} else if (value < 0) {
12444								negativeValues[index] += value;
12445							} else {
12446								positiveValues[index] += value;
12447							}
12448						});
12449					}
12450				});
12451
12452				helpers.each(valuesPerStack, function(valuesForType) {
12453					var values = valuesForType.positiveValues.concat(valuesForType.negativeValues);
12454					var minVal = helpers.min(values);
12455					var maxVal = helpers.max(values);
12456					me.min = me.min === null ? minVal : Math.min(me.min, minVal);
12457					me.max = me.max === null ? maxVal : Math.max(me.max, maxVal);
12458				});
12459
12460			} else {
12461				helpers.each(datasets, function(dataset, datasetIndex) {
12462					var meta = chart.getDatasetMeta(datasetIndex);
12463					if (chart.isDatasetVisible(datasetIndex) && IDMatches(meta)) {
12464						helpers.each(dataset.data, function(rawValue, index) {
12465							var value = +me.getRightValue(rawValue);
12466							if (isNaN(value) || meta.data[index].hidden) {
12467								return;
12468							}
12469
12470							if (me.min === null) {
12471								me.min = value;
12472							} else if (value < me.min) {
12473								me.min = value;
12474							}
12475
12476							if (me.max === null) {
12477								me.max = value;
12478							} else if (value > me.max) {
12479								me.max = value;
12480							}
12481						});
12482					}
12483				});
12484			}
12485
12486			me.min = isFinite(me.min) && !isNaN(me.min) ? me.min : DEFAULT_MIN;
12487			me.max = isFinite(me.max) && !isNaN(me.max) ? me.max : DEFAULT_MAX;
12488
12489			// Common base implementation to handle ticks.min, ticks.max, ticks.beginAtZero
12490			this.handleTickRangeOptions();
12491		},
12492		getTickLimit: function() {
12493			var maxTicks;
12494			var me = this;
12495			var tickOpts = me.options.ticks;
12496
12497			if (me.isHorizontal()) {
12498				maxTicks = Math.min(tickOpts.maxTicksLimit ? tickOpts.maxTicksLimit : 11, Math.ceil(me.width / 50));
12499			} else {
12500				// The factor of 2 used to scale the font size has been experimentally determined.
12501				var tickFontSize = helpers.valueOrDefault(tickOpts.fontSize, defaults.global.defaultFontSize);
12502				maxTicks = Math.min(tickOpts.maxTicksLimit ? tickOpts.maxTicksLimit : 11, Math.ceil(me.height / (2 * tickFontSize)));
12503			}
12504
12505			return maxTicks;
12506		},
12507		// Called after the ticks are built. We need
12508		handleDirectionalChanges: function() {
12509			if (!this.isHorizontal()) {
12510				// We are in a vertical orientation. The top value is the highest. So reverse the array
12511				this.ticks.reverse();
12512			}
12513		},
12514		getLabelForIndex: function(index, datasetIndex) {
12515			return +this.getRightValue(this.chart.data.datasets[datasetIndex].data[index]);
12516		},
12517		// Utils
12518		getPixelForValue: function(value) {
12519			// This must be called after fit has been run so that
12520			// this.left, this.top, this.right, and this.bottom have been defined
12521			var me = this;
12522			var start = me.start;
12523
12524			var rightValue = +me.getRightValue(value);
12525			var pixel;
12526			var range = me.end - start;
12527
12528			if (me.isHorizontal()) {
12529				pixel = me.left + (me.width / range * (rightValue - start));
12530			} else {
12531				pixel = me.bottom - (me.height / range * (rightValue - start));
12532			}
12533			return pixel;
12534		},
12535		getValueForPixel: function(pixel) {
12536			var me = this;
12537			var isHorizontal = me.isHorizontal();
12538			var innerDimension = isHorizontal ? me.width : me.height;
12539			var offset = (isHorizontal ? pixel - me.left : me.bottom - pixel) / innerDimension;
12540			return me.start + ((me.end - me.start) * offset);
12541		},
12542		getPixelForTick: function(index) {
12543			return this.getPixelForValue(this.ticksAsNumbers[index]);
12544		}
12545	});
12546
12547	scaleService.registerScaleType('linear', LinearScale, defaultConfig);
12548};
12549
12550},{"26":26,"34":34,"35":35,"46":46}],56:[function(require,module,exports){
12551'use strict';
12552
12553var helpers = require(46);
12554var Scale = require(33);
12555
12556/**
12557 * Generate a set of linear ticks
12558 * @param generationOptions the options used to generate the ticks
12559 * @param dataRange the range of the data
12560 * @returns {Array<Number>} array of tick values
12561 */
12562function generateTicks(generationOptions, dataRange) {
12563	var ticks = [];
12564	// To get a "nice" value for the tick spacing, we will use the appropriately named
12565	// "nice number" algorithm. See http://stackoverflow.com/questions/8506881/nice-label-algorithm-for-charts-with-minimum-ticks
12566	// for details.
12567
12568	var factor;
12569	var precision;
12570	var spacing;
12571
12572	if (generationOptions.stepSize && generationOptions.stepSize > 0) {
12573		spacing = generationOptions.stepSize;
12574	} else {
12575		var niceRange = helpers.niceNum(dataRange.max - dataRange.min, false);
12576		spacing = helpers.niceNum(niceRange / (generationOptions.maxTicks - 1), true);
12577
12578		precision = generationOptions.precision;
12579		if (precision !== undefined) {
12580			// If the user specified a precision, round to that number of decimal places
12581			factor = Math.pow(10, precision);
12582			spacing = Math.ceil(spacing * factor) / factor;
12583		}
12584	}
12585	var niceMin = Math.floor(dataRange.min / spacing) * spacing;
12586	var niceMax = Math.ceil(dataRange.max / spacing) * spacing;
12587
12588	// If min, max and stepSize is set and they make an evenly spaced scale use it.
12589	if (generationOptions.min && generationOptions.max && generationOptions.stepSize) {
12590		// If very close to our whole number, use it.
12591		if (helpers.almostWhole((generationOptions.max - generationOptions.min) / generationOptions.stepSize, spacing / 1000)) {
12592			niceMin = generationOptions.min;
12593			niceMax = generationOptions.max;
12594		}
12595	}
12596
12597	var numSpaces = (niceMax - niceMin) / spacing;
12598	// If very close to our rounded value, use it.
12599	if (helpers.almostEquals(numSpaces, Math.round(numSpaces), spacing / 1000)) {
12600		numSpaces = Math.round(numSpaces);
12601	} else {
12602		numSpaces = Math.ceil(numSpaces);
12603	}
12604
12605	precision = 1;
12606	if (spacing < 1) {
12607		precision = Math.pow(10, spacing.toString().length - 2);
12608		niceMin = Math.round(niceMin * precision) / precision;
12609		niceMax = Math.round(niceMax * precision) / precision;
12610	}
12611	ticks.push(generationOptions.min !== undefined ? generationOptions.min : niceMin);
12612	for (var j = 1; j < numSpaces; ++j) {
12613		ticks.push(Math.round((niceMin + j * spacing) * precision) / precision);
12614	}
12615	ticks.push(generationOptions.max !== undefined ? generationOptions.max : niceMax);
12616
12617	return ticks;
12618}
12619
12620module.exports = function(Chart) {
12621
12622	var noop = helpers.noop;
12623
12624	Chart.LinearScaleBase = Scale.extend({
12625		getRightValue: function(value) {
12626			if (typeof value === 'string') {
12627				return +value;
12628			}
12629			return Scale.prototype.getRightValue.call(this, value);
12630		},
12631
12632		handleTickRangeOptions: function() {
12633			var me = this;
12634			var opts = me.options;
12635			var tickOpts = opts.ticks;
12636
12637			// If we are forcing it to begin at 0, but 0 will already be rendered on the chart,
12638			// do nothing since that would make the chart weird. If the user really wants a weird chart
12639			// axis, they can manually override it
12640			if (tickOpts.beginAtZero) {
12641				var minSign = helpers.sign(me.min);
12642				var maxSign = helpers.sign(me.max);
12643
12644				if (minSign < 0 && maxSign < 0) {
12645					// move the top up to 0
12646					me.max = 0;
12647				} else if (minSign > 0 && maxSign > 0) {
12648					// move the bottom down to 0
12649					me.min = 0;
12650				}
12651			}
12652
12653			var setMin = tickOpts.min !== undefined || tickOpts.suggestedMin !== undefined;
12654			var setMax = tickOpts.max !== undefined || tickOpts.suggestedMax !== undefined;
12655
12656			if (tickOpts.min !== undefined) {
12657				me.min = tickOpts.min;
12658			} else if (tickOpts.suggestedMin !== undefined) {
12659				if (me.min === null) {
12660					me.min = tickOpts.suggestedMin;
12661				} else {
12662					me.min = Math.min(me.min, tickOpts.suggestedMin);
12663				}
12664			}
12665
12666			if (tickOpts.max !== undefined) {
12667				me.max = tickOpts.max;
12668			} else if (tickOpts.suggestedMax !== undefined) {
12669				if (me.max === null) {
12670					me.max = tickOpts.suggestedMax;
12671				} else {
12672					me.max = Math.max(me.max, tickOpts.suggestedMax);
12673				}
12674			}
12675
12676			if (setMin !== setMax) {
12677				// We set the min or the max but not both.
12678				// So ensure that our range is good
12679				// Inverted or 0 length range can happen when
12680				// ticks.min is set, and no datasets are visible
12681				if (me.min >= me.max) {
12682					if (setMin) {
12683						me.max = me.min + 1;
12684					} else {
12685						me.min = me.max - 1;
12686					}
12687				}
12688			}
12689
12690			if (me.min === me.max) {
12691				me.max++;
12692
12693				if (!tickOpts.beginAtZero) {
12694					me.min--;
12695				}
12696			}
12697		},
12698		getTickLimit: noop,
12699		handleDirectionalChanges: noop,
12700
12701		buildTicks: function() {
12702			var me = this;
12703			var opts = me.options;
12704			var tickOpts = opts.ticks;
12705
12706			// Figure out what the max number of ticks we can support it is based on the size of
12707			// the axis area. For now, we say that the minimum tick spacing in pixels must be 50
12708			// We also limit the maximum number of ticks to 11 which gives a nice 10 squares on
12709			// the graph. Make sure we always have at least 2 ticks
12710			var maxTicks = me.getTickLimit();
12711			maxTicks = Math.max(2, maxTicks);
12712
12713			var numericGeneratorOptions = {
12714				maxTicks: maxTicks,
12715				min: tickOpts.min,
12716				max: tickOpts.max,
12717				precision: tickOpts.precision,
12718				stepSize: helpers.valueOrDefault(tickOpts.fixedStepSize, tickOpts.stepSize)
12719			};
12720			var ticks = me.ticks = generateTicks(numericGeneratorOptions, me);
12721
12722			me.handleDirectionalChanges();
12723
12724			// At this point, we need to update our max and min given the tick values since we have expanded the
12725			// range of the scale
12726			me.max = helpers.max(ticks);
12727			me.min = helpers.min(ticks);
12728
12729			if (tickOpts.reverse) {
12730				ticks.reverse();
12731
12732				me.start = me.max;
12733				me.end = me.min;
12734			} else {
12735				me.start = me.min;
12736				me.end = me.max;
12737			}
12738		},
12739		convertTicksToLabels: function() {
12740			var me = this;
12741			me.ticksAsNumbers = me.ticks.slice();
12742			me.zeroLineIndex = me.ticks.indexOf(0);
12743
12744			Scale.prototype.convertTicksToLabels.call(me);
12745		}
12746	});
12747};
12748
12749},{"33":33,"46":46}],57:[function(require,module,exports){
12750'use strict';
12751
12752var helpers = require(46);
12753var Scale = require(33);
12754var scaleService = require(34);
12755var Ticks = require(35);
12756
12757/**
12758 * Generate a set of logarithmic ticks
12759 * @param generationOptions the options used to generate the ticks
12760 * @param dataRange the range of the data
12761 * @returns {Array<Number>} array of tick values
12762 */
12763function generateTicks(generationOptions, dataRange) {
12764	var ticks = [];
12765	var valueOrDefault = helpers.valueOrDefault;
12766
12767	// Figure out what the max number of ticks we can support it is based on the size of
12768	// the axis area. For now, we say that the minimum tick spacing in pixels must be 50
12769	// We also limit the maximum number of ticks to 11 which gives a nice 10 squares on
12770	// the graph
12771	var tickVal = valueOrDefault(generationOptions.min, Math.pow(10, Math.floor(helpers.log10(dataRange.min))));
12772
12773	var endExp = Math.floor(helpers.log10(dataRange.max));
12774	var endSignificand = Math.ceil(dataRange.max / Math.pow(10, endExp));
12775	var exp, significand;
12776
12777	if (tickVal === 0) {
12778		exp = Math.floor(helpers.log10(dataRange.minNotZero));
12779		significand = Math.floor(dataRange.minNotZero / Math.pow(10, exp));
12780
12781		ticks.push(tickVal);
12782		tickVal = significand * Math.pow(10, exp);
12783	} else {
12784		exp = Math.floor(helpers.log10(tickVal));
12785		significand = Math.floor(tickVal / Math.pow(10, exp));
12786	}
12787	var precision = exp < 0 ? Math.pow(10, Math.abs(exp)) : 1;
12788
12789	do {
12790		ticks.push(tickVal);
12791
12792		++significand;
12793		if (significand === 10) {
12794			significand = 1;
12795			++exp;
12796			precision = exp >= 0 ? 1 : precision;
12797		}
12798
12799		tickVal = Math.round(significand * Math.pow(10, exp) * precision) / precision;
12800	} while (exp < endExp || (exp === endExp && significand < endSignificand));
12801
12802	var lastTick = valueOrDefault(generationOptions.max, tickVal);
12803	ticks.push(lastTick);
12804
12805	return ticks;
12806}
12807
12808
12809module.exports = function(Chart) {
12810
12811	var defaultConfig = {
12812		position: 'left',
12813
12814		// label settings
12815		ticks: {
12816			callback: Ticks.formatters.logarithmic
12817		}
12818	};
12819
12820	var LogarithmicScale = Scale.extend({
12821		determineDataLimits: function() {
12822			var me = this;
12823			var opts = me.options;
12824			var chart = me.chart;
12825			var data = chart.data;
12826			var datasets = data.datasets;
12827			var isHorizontal = me.isHorizontal();
12828			function IDMatches(meta) {
12829				return isHorizontal ? meta.xAxisID === me.id : meta.yAxisID === me.id;
12830			}
12831
12832			// Calculate Range
12833			me.min = null;
12834			me.max = null;
12835			me.minNotZero = null;
12836
12837			var hasStacks = opts.stacked;
12838			if (hasStacks === undefined) {
12839				helpers.each(datasets, function(dataset, datasetIndex) {
12840					if (hasStacks) {
12841						return;
12842					}
12843
12844					var meta = chart.getDatasetMeta(datasetIndex);
12845					if (chart.isDatasetVisible(datasetIndex) && IDMatches(meta) &&
12846						meta.stack !== undefined) {
12847						hasStacks = true;
12848					}
12849				});
12850			}
12851
12852			if (opts.stacked || hasStacks) {
12853				var valuesPerStack = {};
12854
12855				helpers.each(datasets, function(dataset, datasetIndex) {
12856					var meta = chart.getDatasetMeta(datasetIndex);
12857					var key = [
12858						meta.type,
12859						// we have a separate stack for stack=undefined datasets when the opts.stacked is undefined
12860						((opts.stacked === undefined && meta.stack === undefined) ? datasetIndex : ''),
12861						meta.stack
12862					].join('.');
12863
12864					if (chart.isDatasetVisible(datasetIndex) && IDMatches(meta)) {
12865						if (valuesPerStack[key] === undefined) {
12866							valuesPerStack[key] = [];
12867						}
12868
12869						helpers.each(dataset.data, function(rawValue, index) {
12870							var values = valuesPerStack[key];
12871							var value = +me.getRightValue(rawValue);
12872							// invalid, hidden and negative values are ignored
12873							if (isNaN(value) || meta.data[index].hidden || value < 0) {
12874								return;
12875							}
12876							values[index] = values[index] || 0;
12877							values[index] += value;
12878						});
12879					}
12880				});
12881
12882				helpers.each(valuesPerStack, function(valuesForType) {
12883					if (valuesForType.length > 0) {
12884						var minVal = helpers.min(valuesForType);
12885						var maxVal = helpers.max(valuesForType);
12886						me.min = me.min === null ? minVal : Math.min(me.min, minVal);
12887						me.max = me.max === null ? maxVal : Math.max(me.max, maxVal);
12888					}
12889				});
12890
12891			} else {
12892				helpers.each(datasets, function(dataset, datasetIndex) {
12893					var meta = chart.getDatasetMeta(datasetIndex);
12894					if (chart.isDatasetVisible(datasetIndex) && IDMatches(meta)) {
12895						helpers.each(dataset.data, function(rawValue, index) {
12896							var value = +me.getRightValue(rawValue);
12897							// invalid, hidden and negative values are ignored
12898							if (isNaN(value) || meta.data[index].hidden || value < 0) {
12899								return;
12900							}
12901
12902							if (me.min === null) {
12903								me.min = value;
12904							} else if (value < me.min) {
12905								me.min = value;
12906							}
12907
12908							if (me.max === null) {
12909								me.max = value;
12910							} else if (value > me.max) {
12911								me.max = value;
12912							}
12913
12914							if (value !== 0 && (me.minNotZero === null || value < me.minNotZero)) {
12915								me.minNotZero = value;
12916							}
12917						});
12918					}
12919				});
12920			}
12921
12922			// Common base implementation to handle ticks.min, ticks.max
12923			this.handleTickRangeOptions();
12924		},
12925		handleTickRangeOptions: function() {
12926			var me = this;
12927			var opts = me.options;
12928			var tickOpts = opts.ticks;
12929			var valueOrDefault = helpers.valueOrDefault;
12930			var DEFAULT_MIN = 1;
12931			var DEFAULT_MAX = 10;
12932
12933			me.min = valueOrDefault(tickOpts.min, me.min);
12934			me.max = valueOrDefault(tickOpts.max, me.max);
12935
12936			if (me.min === me.max) {
12937				if (me.min !== 0 && me.min !== null) {
12938					me.min = Math.pow(10, Math.floor(helpers.log10(me.min)) - 1);
12939					me.max = Math.pow(10, Math.floor(helpers.log10(me.max)) + 1);
12940				} else {
12941					me.min = DEFAULT_MIN;
12942					me.max = DEFAULT_MAX;
12943				}
12944			}
12945			if (me.min === null) {
12946				me.min = Math.pow(10, Math.floor(helpers.log10(me.max)) - 1);
12947			}
12948			if (me.max === null) {
12949				me.max = me.min !== 0
12950					? Math.pow(10, Math.floor(helpers.log10(me.min)) + 1)
12951					: DEFAULT_MAX;
12952			}
12953			if (me.minNotZero === null) {
12954				if (me.min > 0) {
12955					me.minNotZero = me.min;
12956				} else if (me.max < 1) {
12957					me.minNotZero = Math.pow(10, Math.floor(helpers.log10(me.max)));
12958				} else {
12959					me.minNotZero = DEFAULT_MIN;
12960				}
12961			}
12962		},
12963		buildTicks: function() {
12964			var me = this;
12965			var opts = me.options;
12966			var tickOpts = opts.ticks;
12967			var reverse = !me.isHorizontal();
12968
12969			var generationOptions = {
12970				min: tickOpts.min,
12971				max: tickOpts.max
12972			};
12973			var ticks = me.ticks = generateTicks(generationOptions, me);
12974
12975			// At this point, we need to update our max and min given the tick values since we have expanded the
12976			// range of the scale
12977			me.max = helpers.max(ticks);
12978			me.min = helpers.min(ticks);
12979
12980			if (tickOpts.reverse) {
12981				reverse = !reverse;
12982				me.start = me.max;
12983				me.end = me.min;
12984			} else {
12985				me.start = me.min;
12986				me.end = me.max;
12987			}
12988			if (reverse) {
12989				ticks.reverse();
12990			}
12991		},
12992		convertTicksToLabels: function() {
12993			this.tickValues = this.ticks.slice();
12994
12995			Scale.prototype.convertTicksToLabels.call(this);
12996		},
12997		// Get the correct tooltip label
12998		getLabelForIndex: function(index, datasetIndex) {
12999			return +this.getRightValue(this.chart.data.datasets[datasetIndex].data[index]);
13000		},
13001		getPixelForTick: function(index) {
13002			return this.getPixelForValue(this.tickValues[index]);
13003		},
13004		/**
13005		 * Returns the value of the first tick.
13006		 * @param {Number} value - The minimum not zero value.
13007		 * @return {Number} The first tick value.
13008		 * @private
13009		 */
13010		_getFirstTickValue: function(value) {
13011			var exp = Math.floor(helpers.log10(value));
13012			var significand = Math.floor(value / Math.pow(10, exp));
13013
13014			return significand * Math.pow(10, exp);
13015		},
13016		getPixelForValue: function(value) {
13017			var me = this;
13018			var reverse = me.options.ticks.reverse;
13019			var log10 = helpers.log10;
13020			var firstTickValue = me._getFirstTickValue(me.minNotZero);
13021			var offset = 0;
13022			var innerDimension, pixel, start, end, sign;
13023
13024			value = +me.getRightValue(value);
13025			if (reverse) {
13026				start = me.end;
13027				end = me.start;
13028				sign = -1;
13029			} else {
13030				start = me.start;
13031				end = me.end;
13032				sign = 1;
13033			}
13034			if (me.isHorizontal()) {
13035				innerDimension = me.width;
13036				pixel = reverse ? me.right : me.left;
13037			} else {
13038				innerDimension = me.height;
13039				sign *= -1; // invert, since the upper-left corner of the canvas is at pixel (0, 0)
13040				pixel = reverse ? me.top : me.bottom;
13041			}
13042			if (value !== start) {
13043				if (start === 0) { // include zero tick
13044					offset = helpers.getValueOrDefault(
13045						me.options.ticks.fontSize,
13046						Chart.defaults.global.defaultFontSize
13047					);
13048					innerDimension -= offset;
13049					start = firstTickValue;
13050				}
13051				if (value !== 0) {
13052					offset += innerDimension / (log10(end) - log10(start)) * (log10(value) - log10(start));
13053				}
13054				pixel += sign * offset;
13055			}
13056			return pixel;
13057		},
13058		getValueForPixel: function(pixel) {
13059			var me = this;
13060			var reverse = me.options.ticks.reverse;
13061			var log10 = helpers.log10;
13062			var firstTickValue = me._getFirstTickValue(me.minNotZero);
13063			var innerDimension, start, end, value;
13064
13065			if (reverse) {
13066				start = me.end;
13067				end = me.start;
13068			} else {
13069				start = me.start;
13070				end = me.end;
13071			}
13072			if (me.isHorizontal()) {
13073				innerDimension = me.width;
13074				value = reverse ? me.right - pixel : pixel - me.left;
13075			} else {
13076				innerDimension = me.height;
13077				value = reverse ? pixel - me.top : me.bottom - pixel;
13078			}
13079			if (value !== start) {
13080				if (start === 0) { // include zero tick
13081					var offset = helpers.getValueOrDefault(
13082						me.options.ticks.fontSize,
13083						Chart.defaults.global.defaultFontSize
13084					);
13085					value -= offset;
13086					innerDimension -= offset;
13087					start = firstTickValue;
13088				}
13089				value *= log10(end) - log10(start);
13090				value /= innerDimension;
13091				value = Math.pow(10, log10(start) + value);
13092			}
13093			return value;
13094		}
13095	});
13096
13097	scaleService.registerScaleType('logarithmic', LogarithmicScale, defaultConfig);
13098};
13099
13100},{"33":33,"34":34,"35":35,"46":46}],58:[function(require,module,exports){
13101'use strict';
13102
13103var defaults = require(26);
13104var helpers = require(46);
13105var scaleService = require(34);
13106var Ticks = require(35);
13107
13108module.exports = function(Chart) {
13109
13110	var globalDefaults = defaults.global;
13111
13112	var defaultConfig = {
13113		display: true,
13114
13115		// Boolean - Whether to animate scaling the chart from the centre
13116		animate: true,
13117		position: 'chartArea',
13118
13119		angleLines: {
13120			display: true,
13121			color: 'rgba(0, 0, 0, 0.1)',
13122			lineWidth: 1
13123		},
13124
13125		gridLines: {
13126			circular: false
13127		},
13128
13129		// label settings
13130		ticks: {
13131			// Boolean - Show a backdrop to the scale label
13132			showLabelBackdrop: true,
13133
13134			// String - The colour of the label backdrop
13135			backdropColor: 'rgba(255,255,255,0.75)',
13136
13137			// Number - The backdrop padding above & below the label in pixels
13138			backdropPaddingY: 2,
13139
13140			// Number - The backdrop padding to the side of the label in pixels
13141			backdropPaddingX: 2,
13142
13143			callback: Ticks.formatters.linear
13144		},
13145
13146		pointLabels: {
13147			// Boolean - if true, show point labels
13148			display: true,
13149
13150			// Number - Point label font size in pixels
13151			fontSize: 10,
13152
13153			// Function - Used to convert point labels
13154			callback: function(label) {
13155				return label;
13156			}
13157		}
13158	};
13159
13160	function getValueCount(scale) {
13161		var opts = scale.options;
13162		return opts.angleLines.display || opts.pointLabels.display ? scale.chart.data.labels.length : 0;
13163	}
13164
13165	function getPointLabelFontOptions(scale) {
13166		var pointLabelOptions = scale.options.pointLabels;
13167		var fontSize = helpers.valueOrDefault(pointLabelOptions.fontSize, globalDefaults.defaultFontSize);
13168		var fontStyle = helpers.valueOrDefault(pointLabelOptions.fontStyle, globalDefaults.defaultFontStyle);
13169		var fontFamily = helpers.valueOrDefault(pointLabelOptions.fontFamily, globalDefaults.defaultFontFamily);
13170		var font = helpers.fontString(fontSize, fontStyle, fontFamily);
13171
13172		return {
13173			size: fontSize,
13174			style: fontStyle,
13175			family: fontFamily,
13176			font: font
13177		};
13178	}
13179
13180	function measureLabelSize(ctx, fontSize, label) {
13181		if (helpers.isArray(label)) {
13182			return {
13183				w: helpers.longestText(ctx, ctx.font, label),
13184				h: (label.length * fontSize) + ((label.length - 1) * 1.5 * fontSize)
13185			};
13186		}
13187
13188		return {
13189			w: ctx.measureText(label).width,
13190			h: fontSize
13191		};
13192	}
13193
13194	function determineLimits(angle, pos, size, min, max) {
13195		if (angle === min || angle === max) {
13196			return {
13197				start: pos - (size / 2),
13198				end: pos + (size / 2)
13199			};
13200		} else if (angle < min || angle > max) {
13201			return {
13202				start: pos - size - 5,
13203				end: pos
13204			};
13205		}
13206
13207		return {
13208			start: pos,
13209			end: pos + size + 5
13210		};
13211	}
13212
13213	/**
13214	 * Helper function to fit a radial linear scale with point labels
13215	 */
13216	function fitWithPointLabels(scale) {
13217		/*
13218		 * Right, this is really confusing and there is a lot of maths going on here
13219		 * The gist of the problem is here: https://gist.github.com/nnnick/696cc9c55f4b0beb8fe9
13220		 *
13221		 * Reaction: https://dl.dropboxusercontent.com/u/34601363/toomuchscience.gif
13222		 *
13223		 * Solution:
13224		 *
13225		 * We assume the radius of the polygon is half the size of the canvas at first
13226		 * at each index we check if the text overlaps.
13227		 *
13228		 * Where it does, we store that angle and that index.
13229		 *
13230		 * After finding the largest index and angle we calculate how much we need to remove
13231		 * from the shape radius to move the point inwards by that x.
13232		 *
13233		 * We average the left and right distances to get the maximum shape radius that can fit in the box
13234		 * along with labels.
13235		 *
13236		 * Once we have that, we can find the centre point for the chart, by taking the x text protrusion
13237		 * on each side, removing that from the size, halving it and adding the left x protrusion width.
13238		 *
13239		 * This will mean we have a shape fitted to the canvas, as large as it can be with the labels
13240		 * and position it in the most space efficient manner
13241		 *
13242		 * https://dl.dropboxusercontent.com/u/34601363/yeahscience.gif
13243		 */
13244
13245		var plFont = getPointLabelFontOptions(scale);
13246
13247		// Get maximum radius of the polygon. Either half the height (minus the text width) or half the width.
13248		// Use this to calculate the offset + change. - Make sure L/R protrusion is at least 0 to stop issues with centre points
13249		var largestPossibleRadius = Math.min(scale.height / 2, scale.width / 2);
13250		var furthestLimits = {
13251			r: scale.width,
13252			l: 0,
13253			t: scale.height,
13254			b: 0
13255		};
13256		var furthestAngles = {};
13257		var i, textSize, pointPosition;
13258
13259		scale.ctx.font = plFont.font;
13260		scale._pointLabelSizes = [];
13261
13262		var valueCount = getValueCount(scale);
13263		for (i = 0; i < valueCount; i++) {
13264			pointPosition = scale.getPointPosition(i, largestPossibleRadius);
13265			textSize = measureLabelSize(scale.ctx, plFont.size, scale.pointLabels[i] || '');
13266			scale._pointLabelSizes[i] = textSize;
13267
13268			// Add quarter circle to make degree 0 mean top of circle
13269			var angleRadians = scale.getIndexAngle(i);
13270			var angle = helpers.toDegrees(angleRadians) % 360;
13271			var hLimits = determineLimits(angle, pointPosition.x, textSize.w, 0, 180);
13272			var vLimits = determineLimits(angle, pointPosition.y, textSize.h, 90, 270);
13273
13274			if (hLimits.start < furthestLimits.l) {
13275				furthestLimits.l = hLimits.start;
13276				furthestAngles.l = angleRadians;
13277			}
13278
13279			if (hLimits.end > furthestLimits.r) {
13280				furthestLimits.r = hLimits.end;
13281				furthestAngles.r = angleRadians;
13282			}
13283
13284			if (vLimits.start < furthestLimits.t) {
13285				furthestLimits.t = vLimits.start;
13286				furthestAngles.t = angleRadians;
13287			}
13288
13289			if (vLimits.end > furthestLimits.b) {
13290				furthestLimits.b = vLimits.end;
13291				furthestAngles.b = angleRadians;
13292			}
13293		}
13294
13295		scale.setReductions(largestPossibleRadius, furthestLimits, furthestAngles);
13296	}
13297
13298	/**
13299	 * Helper function to fit a radial linear scale with no point labels
13300	 */
13301	function fit(scale) {
13302		var largestPossibleRadius = Math.min(scale.height / 2, scale.width / 2);
13303		scale.drawingArea = Math.round(largestPossibleRadius);
13304		scale.setCenterPoint(0, 0, 0, 0);
13305	}
13306
13307	function getTextAlignForAngle(angle) {
13308		if (angle === 0 || angle === 180) {
13309			return 'center';
13310		} else if (angle < 180) {
13311			return 'left';
13312		}
13313
13314		return 'right';
13315	}
13316
13317	function fillText(ctx, text, position, fontSize) {
13318		if (helpers.isArray(text)) {
13319			var y = position.y;
13320			var spacing = 1.5 * fontSize;
13321
13322			for (var i = 0; i < text.length; ++i) {
13323				ctx.fillText(text[i], position.x, y);
13324				y += spacing;
13325			}
13326		} else {
13327			ctx.fillText(text, position.x, position.y);
13328		}
13329	}
13330
13331	function adjustPointPositionForLabelHeight(angle, textSize, position) {
13332		if (angle === 90 || angle === 270) {
13333			position.y -= (textSize.h / 2);
13334		} else if (angle > 270 || angle < 90) {
13335			position.y -= textSize.h;
13336		}
13337	}
13338
13339	function drawPointLabels(scale) {
13340		var ctx = scale.ctx;
13341		var opts = scale.options;
13342		var angleLineOpts = opts.angleLines;
13343		var pointLabelOpts = opts.pointLabels;
13344
13345		ctx.lineWidth = angleLineOpts.lineWidth;
13346		ctx.strokeStyle = angleLineOpts.color;
13347
13348		var outerDistance = scale.getDistanceFromCenterForValue(opts.ticks.reverse ? scale.min : scale.max);
13349
13350		// Point Label Font
13351		var plFont = getPointLabelFontOptions(scale);
13352
13353		ctx.textBaseline = 'top';
13354
13355		for (var i = getValueCount(scale) - 1; i >= 0; i--) {
13356			if (angleLineOpts.display) {
13357				var outerPosition = scale.getPointPosition(i, outerDistance);
13358				ctx.beginPath();
13359				ctx.moveTo(scale.xCenter, scale.yCenter);
13360				ctx.lineTo(outerPosition.x, outerPosition.y);
13361				ctx.stroke();
13362				ctx.closePath();
13363			}
13364
13365			if (pointLabelOpts.display) {
13366				// Extra 3px out for some label spacing
13367				var pointLabelPosition = scale.getPointPosition(i, outerDistance + 5);
13368
13369				// Keep this in loop since we may support array properties here
13370				var pointLabelFontColor = helpers.valueAtIndexOrDefault(pointLabelOpts.fontColor, i, globalDefaults.defaultFontColor);
13371				ctx.font = plFont.font;
13372				ctx.fillStyle = pointLabelFontColor;
13373
13374				var angleRadians = scale.getIndexAngle(i);
13375				var angle = helpers.toDegrees(angleRadians);
13376				ctx.textAlign = getTextAlignForAngle(angle);
13377				adjustPointPositionForLabelHeight(angle, scale._pointLabelSizes[i], pointLabelPosition);
13378				fillText(ctx, scale.pointLabels[i] || '', pointLabelPosition, plFont.size);
13379			}
13380		}
13381	}
13382
13383	function drawRadiusLine(scale, gridLineOpts, radius, index) {
13384		var ctx = scale.ctx;
13385		ctx.strokeStyle = helpers.valueAtIndexOrDefault(gridLineOpts.color, index - 1);
13386		ctx.lineWidth = helpers.valueAtIndexOrDefault(gridLineOpts.lineWidth, index - 1);
13387
13388		if (scale.options.gridLines.circular) {
13389			// Draw circular arcs between the points
13390			ctx.beginPath();
13391			ctx.arc(scale.xCenter, scale.yCenter, radius, 0, Math.PI * 2);
13392			ctx.closePath();
13393			ctx.stroke();
13394		} else {
13395			// Draw straight lines connecting each index
13396			var valueCount = getValueCount(scale);
13397
13398			if (valueCount === 0) {
13399				return;
13400			}
13401
13402			ctx.beginPath();
13403			var pointPosition = scale.getPointPosition(0, radius);
13404			ctx.moveTo(pointPosition.x, pointPosition.y);
13405
13406			for (var i = 1; i < valueCount; i++) {
13407				pointPosition = scale.getPointPosition(i, radius);
13408				ctx.lineTo(pointPosition.x, pointPosition.y);
13409			}
13410
13411			ctx.closePath();
13412			ctx.stroke();
13413		}
13414	}
13415
13416	function numberOrZero(param) {
13417		return helpers.isNumber(param) ? param : 0;
13418	}
13419
13420	var LinearRadialScale = Chart.LinearScaleBase.extend({
13421		setDimensions: function() {
13422			var me = this;
13423			var opts = me.options;
13424			var tickOpts = opts.ticks;
13425			// Set the unconstrained dimension before label rotation
13426			me.width = me.maxWidth;
13427			me.height = me.maxHeight;
13428			me.xCenter = Math.round(me.width / 2);
13429			me.yCenter = Math.round(me.height / 2);
13430
13431			var minSize = helpers.min([me.height, me.width]);
13432			var tickFontSize = helpers.valueOrDefault(tickOpts.fontSize, globalDefaults.defaultFontSize);
13433			me.drawingArea = opts.display ? (minSize / 2) - (tickFontSize / 2 + tickOpts.backdropPaddingY) : (minSize / 2);
13434		},
13435		determineDataLimits: function() {
13436			var me = this;
13437			var chart = me.chart;
13438			var min = Number.POSITIVE_INFINITY;
13439			var max = Number.NEGATIVE_INFINITY;
13440
13441			helpers.each(chart.data.datasets, function(dataset, datasetIndex) {
13442				if (chart.isDatasetVisible(datasetIndex)) {
13443					var meta = chart.getDatasetMeta(datasetIndex);
13444
13445					helpers.each(dataset.data, function(rawValue, index) {
13446						var value = +me.getRightValue(rawValue);
13447						if (isNaN(value) || meta.data[index].hidden) {
13448							return;
13449						}
13450
13451						min = Math.min(value, min);
13452						max = Math.max(value, max);
13453					});
13454				}
13455			});
13456
13457			me.min = (min === Number.POSITIVE_INFINITY ? 0 : min);
13458			me.max = (max === Number.NEGATIVE_INFINITY ? 0 : max);
13459
13460			// Common base implementation to handle ticks.min, ticks.max, ticks.beginAtZero
13461			me.handleTickRangeOptions();
13462		},
13463		getTickLimit: function() {
13464			var tickOpts = this.options.ticks;
13465			var tickFontSize = helpers.valueOrDefault(tickOpts.fontSize, globalDefaults.defaultFontSize);
13466			return Math.min(tickOpts.maxTicksLimit ? tickOpts.maxTicksLimit : 11, Math.ceil(this.drawingArea / (1.5 * tickFontSize)));
13467		},
13468		convertTicksToLabels: function() {
13469			var me = this;
13470
13471			Chart.LinearScaleBase.prototype.convertTicksToLabels.call(me);
13472
13473			// Point labels
13474			me.pointLabels = me.chart.data.labels.map(me.options.pointLabels.callback, me);
13475		},
13476		getLabelForIndex: function(index, datasetIndex) {
13477			return +this.getRightValue(this.chart.data.datasets[datasetIndex].data[index]);
13478		},
13479		fit: function() {
13480			if (this.options.pointLabels.display) {
13481				fitWithPointLabels(this);
13482			} else {
13483				fit(this);
13484			}
13485		},
13486		/**
13487		 * Set radius reductions and determine new radius and center point
13488		 * @private
13489		 */
13490		setReductions: function(largestPossibleRadius, furthestLimits, furthestAngles) {
13491			var me = this;
13492			var radiusReductionLeft = furthestLimits.l / Math.sin(furthestAngles.l);
13493			var radiusReductionRight = Math.max(furthestLimits.r - me.width, 0) / Math.sin(furthestAngles.r);
13494			var radiusReductionTop = -furthestLimits.t / Math.cos(furthestAngles.t);
13495			var radiusReductionBottom = -Math.max(furthestLimits.b - me.height, 0) / Math.cos(furthestAngles.b);
13496
13497			radiusReductionLeft = numberOrZero(radiusReductionLeft);
13498			radiusReductionRight = numberOrZero(radiusReductionRight);
13499			radiusReductionTop = numberOrZero(radiusReductionTop);
13500			radiusReductionBottom = numberOrZero(radiusReductionBottom);
13501
13502			me.drawingArea = Math.min(
13503				Math.round(largestPossibleRadius - (radiusReductionLeft + radiusReductionRight) / 2),
13504				Math.round(largestPossibleRadius - (radiusReductionTop + radiusReductionBottom) / 2));
13505			me.setCenterPoint(radiusReductionLeft, radiusReductionRight, radiusReductionTop, radiusReductionBottom);
13506		},
13507		setCenterPoint: function(leftMovement, rightMovement, topMovement, bottomMovement) {
13508			var me = this;
13509			var maxRight = me.width - rightMovement - me.drawingArea;
13510			var maxLeft = leftMovement + me.drawingArea;
13511			var maxTop = topMovement + me.drawingArea;
13512			var maxBottom = me.height - bottomMovement - me.drawingArea;
13513
13514			me.xCenter = Math.round(((maxLeft + maxRight) / 2) + me.left);
13515			me.yCenter = Math.round(((maxTop + maxBottom) / 2) + me.top);
13516		},
13517
13518		getIndexAngle: function(index) {
13519			var angleMultiplier = (Math.PI * 2) / getValueCount(this);
13520			var startAngle = this.chart.options && this.chart.options.startAngle ?
13521				this.chart.options.startAngle :
13522				0;
13523
13524			var startAngleRadians = startAngle * Math.PI * 2 / 360;
13525
13526			// Start from the top instead of right, so remove a quarter of the circle
13527			return index * angleMultiplier + startAngleRadians;
13528		},
13529		getDistanceFromCenterForValue: function(value) {
13530			var me = this;
13531
13532			if (value === null) {
13533				return 0; // null always in center
13534			}
13535
13536			// Take into account half font size + the yPadding of the top value
13537			var scalingFactor = me.drawingArea / (me.max - me.min);
13538			if (me.options.ticks.reverse) {
13539				return (me.max - value) * scalingFactor;
13540			}
13541			return (value - me.min) * scalingFactor;
13542		},
13543		getPointPosition: function(index, distanceFromCenter) {
13544			var me = this;
13545			var thisAngle = me.getIndexAngle(index) - (Math.PI / 2);
13546			return {
13547				x: Math.round(Math.cos(thisAngle) * distanceFromCenter) + me.xCenter,
13548				y: Math.round(Math.sin(thisAngle) * distanceFromCenter) + me.yCenter
13549			};
13550		},
13551		getPointPositionForValue: function(index, value) {
13552			return this.getPointPosition(index, this.getDistanceFromCenterForValue(value));
13553		},
13554
13555		getBasePosition: function() {
13556			var me = this;
13557			var min = me.min;
13558			var max = me.max;
13559
13560			return me.getPointPositionForValue(0,
13561				me.beginAtZero ? 0 :
13562				min < 0 && max < 0 ? max :
13563				min > 0 && max > 0 ? min :
13564				0);
13565		},
13566
13567		draw: function() {
13568			var me = this;
13569			var opts = me.options;
13570			var gridLineOpts = opts.gridLines;
13571			var tickOpts = opts.ticks;
13572			var valueOrDefault = helpers.valueOrDefault;
13573
13574			if (opts.display) {
13575				var ctx = me.ctx;
13576				var startAngle = this.getIndexAngle(0);
13577
13578				// Tick Font
13579				var tickFontSize = valueOrDefault(tickOpts.fontSize, globalDefaults.defaultFontSize);
13580				var tickFontStyle = valueOrDefault(tickOpts.fontStyle, globalDefaults.defaultFontStyle);
13581				var tickFontFamily = valueOrDefault(tickOpts.fontFamily, globalDefaults.defaultFontFamily);
13582				var tickLabelFont = helpers.fontString(tickFontSize, tickFontStyle, tickFontFamily);
13583
13584				helpers.each(me.ticks, function(label, index) {
13585					// Don't draw a centre value (if it is minimum)
13586					if (index > 0 || tickOpts.reverse) {
13587						var yCenterOffset = me.getDistanceFromCenterForValue(me.ticksAsNumbers[index]);
13588
13589						// Draw circular lines around the scale
13590						if (gridLineOpts.display && index !== 0) {
13591							drawRadiusLine(me, gridLineOpts, yCenterOffset, index);
13592						}
13593
13594						if (tickOpts.display) {
13595							var tickFontColor = valueOrDefault(tickOpts.fontColor, globalDefaults.defaultFontColor);
13596							ctx.font = tickLabelFont;
13597
13598							ctx.save();
13599							ctx.translate(me.xCenter, me.yCenter);
13600							ctx.rotate(startAngle);
13601
13602							if (tickOpts.showLabelBackdrop) {
13603								var labelWidth = ctx.measureText(label).width;
13604								ctx.fillStyle = tickOpts.backdropColor;
13605								ctx.fillRect(
13606									-labelWidth / 2 - tickOpts.backdropPaddingX,
13607									-yCenterOffset - tickFontSize / 2 - tickOpts.backdropPaddingY,
13608									labelWidth + tickOpts.backdropPaddingX * 2,
13609									tickFontSize + tickOpts.backdropPaddingY * 2
13610								);
13611							}
13612
13613							ctx.textAlign = 'center';
13614							ctx.textBaseline = 'middle';
13615							ctx.fillStyle = tickFontColor;
13616							ctx.fillText(label, 0, -yCenterOffset);
13617							ctx.restore();
13618						}
13619					}
13620				});
13621
13622				if (opts.angleLines.display || opts.pointLabels.display) {
13623					drawPointLabels(me);
13624				}
13625			}
13626		}
13627	});
13628
13629	scaleService.registerScaleType('radialLinear', LinearRadialScale, defaultConfig);
13630};
13631
13632},{"26":26,"34":34,"35":35,"46":46}],59:[function(require,module,exports){
13633/* global window: false */
13634'use strict';
13635
13636var moment = require(1);
13637moment = typeof moment === 'function' ? moment : window.moment;
13638
13639var defaults = require(26);
13640var helpers = require(46);
13641var Scale = require(33);
13642var scaleService = require(34);
13643
13644// Integer constants are from the ES6 spec.
13645var MIN_INTEGER = Number.MIN_SAFE_INTEGER || -9007199254740991;
13646var MAX_INTEGER = Number.MAX_SAFE_INTEGER || 9007199254740991;
13647
13648var INTERVALS = {
13649	millisecond: {
13650		common: true,
13651		size: 1,
13652		steps: [1, 2, 5, 10, 20, 50, 100, 250, 500]
13653	},
13654	second: {
13655		common: true,
13656		size: 1000,
13657		steps: [1, 2, 5, 10, 30]
13658	},
13659	minute: {
13660		common: true,
13661		size: 60000,
13662		steps: [1, 2, 5, 10, 30]
13663	},
13664	hour: {
13665		common: true,
13666		size: 3600000,
13667		steps: [1, 2, 3, 6, 12]
13668	},
13669	day: {
13670		common: true,
13671		size: 86400000,
13672		steps: [1, 2, 5]
13673	},
13674	week: {
13675		common: false,
13676		size: 604800000,
13677		steps: [1, 2, 3, 4]
13678	},
13679	month: {
13680		common: true,
13681		size: 2.628e9,
13682		steps: [1, 2, 3]
13683	},
13684	quarter: {
13685		common: false,
13686		size: 7.884e9,
13687		steps: [1, 2, 3, 4]
13688	},
13689	year: {
13690		common: true,
13691		size: 3.154e10
13692	}
13693};
13694
13695var UNITS = Object.keys(INTERVALS);
13696
13697function sorter(a, b) {
13698	return a - b;
13699}
13700
13701function arrayUnique(items) {
13702	var hash = {};
13703	var out = [];
13704	var i, ilen, item;
13705
13706	for (i = 0, ilen = items.length; i < ilen; ++i) {
13707		item = items[i];
13708		if (!hash[item]) {
13709			hash[item] = true;
13710			out.push(item);
13711		}
13712	}
13713
13714	return out;
13715}
13716
13717/**
13718 * Returns an array of {time, pos} objects used to interpolate a specific `time` or position
13719 * (`pos`) on the scale, by searching entries before and after the requested value. `pos` is
13720 * a decimal between 0 and 1: 0 being the start of the scale (left or top) and 1 the other
13721 * extremity (left + width or top + height). Note that it would be more optimized to directly
13722 * store pre-computed pixels, but the scale dimensions are not guaranteed at the time we need
13723 * to create the lookup table. The table ALWAYS contains at least two items: min and max.
13724 *
13725 * @param {Number[]} timestamps - timestamps sorted from lowest to highest.
13726 * @param {String} distribution - If 'linear', timestamps will be spread linearly along the min
13727 * and max range, so basically, the table will contains only two items: {min, 0} and {max, 1}.
13728 * If 'series', timestamps will be positioned at the same distance from each other. In this
13729 * case, only timestamps that break the time linearity are registered, meaning that in the
13730 * best case, all timestamps are linear, the table contains only min and max.
13731 */
13732function buildLookupTable(timestamps, min, max, distribution) {
13733	if (distribution === 'linear' || !timestamps.length) {
13734		return [
13735			{time: min, pos: 0},
13736			{time: max, pos: 1}
13737		];
13738	}
13739
13740	var table = [];
13741	var items = [min];
13742	var i, ilen, prev, curr, next;
13743
13744	for (i = 0, ilen = timestamps.length; i < ilen; ++i) {
13745		curr = timestamps[i];
13746		if (curr > min && curr < max) {
13747			items.push(curr);
13748		}
13749	}
13750
13751	items.push(max);
13752
13753	for (i = 0, ilen = items.length; i < ilen; ++i) {
13754		next = items[i + 1];
13755		prev = items[i - 1];
13756		curr = items[i];
13757
13758		// only add points that breaks the scale linearity
13759		if (prev === undefined || next === undefined || Math.round((next + prev) / 2) !== curr) {
13760			table.push({time: curr, pos: i / (ilen - 1)});
13761		}
13762	}
13763
13764	return table;
13765}
13766
13767// @see adapted from http://www.anujgakhar.com/2014/03/01/binary-search-in-javascript/
13768function lookup(table, key, value) {
13769	var lo = 0;
13770	var hi = table.length - 1;
13771	var mid, i0, i1;
13772
13773	while (lo >= 0 && lo <= hi) {
13774		mid = (lo + hi) >> 1;
13775		i0 = table[mid - 1] || null;
13776		i1 = table[mid];
13777
13778		if (!i0) {
13779			// given value is outside table (before first item)
13780			return {lo: null, hi: i1};
13781		} else if (i1[key] < value) {
13782			lo = mid + 1;
13783		} else if (i0[key] > value) {
13784			hi = mid - 1;
13785		} else {
13786			return {lo: i0, hi: i1};
13787		}
13788	}
13789
13790	// given value is outside table (after last item)
13791	return {lo: i1, hi: null};
13792}
13793
13794/**
13795 * Linearly interpolates the given source `value` using the table items `skey` values and
13796 * returns the associated `tkey` value. For example, interpolate(table, 'time', 42, 'pos')
13797 * returns the position for a timestamp equal to 42. If value is out of bounds, values at
13798 * index [0, 1] or [n - 1, n] are used for the interpolation.
13799 */
13800function interpolate(table, skey, sval, tkey) {
13801	var range = lookup(table, skey, sval);
13802
13803	// Note: the lookup table ALWAYS contains at least 2 items (min and max)
13804	var prev = !range.lo ? table[0] : !range.hi ? table[table.length - 2] : range.lo;
13805	var next = !range.lo ? table[1] : !range.hi ? table[table.length - 1] : range.hi;
13806
13807	var span = next[skey] - prev[skey];
13808	var ratio = span ? (sval - prev[skey]) / span : 0;
13809	var offset = (next[tkey] - prev[tkey]) * ratio;
13810
13811	return prev[tkey] + offset;
13812}
13813
13814/**
13815 * Convert the given value to a moment object using the given time options.
13816 * @see http://momentjs.com/docs/#/parsing/
13817 */
13818function momentify(value, options) {
13819	var parser = options.parser;
13820	var format = options.parser || options.format;
13821
13822	if (typeof parser === 'function') {
13823		return parser(value);
13824	}
13825
13826	if (typeof value === 'string' && typeof format === 'string') {
13827		return moment(value, format);
13828	}
13829
13830	if (!(value instanceof moment)) {
13831		value = moment(value);
13832	}
13833
13834	if (value.isValid()) {
13835		return value;
13836	}
13837
13838	// Labels are in an incompatible moment format and no `parser` has been provided.
13839	// The user might still use the deprecated `format` option to convert his inputs.
13840	if (typeof format === 'function') {
13841		return format(value);
13842	}
13843
13844	return value;
13845}
13846
13847function parse(input, scale) {
13848	if (helpers.isNullOrUndef(input)) {
13849		return null;
13850	}
13851
13852	var options = scale.options.time;
13853	var value = momentify(scale.getRightValue(input), options);
13854	if (!value.isValid()) {
13855		return null;
13856	}
13857
13858	if (options.round) {
13859		value.startOf(options.round);
13860	}
13861
13862	return value.valueOf();
13863}
13864
13865/**
13866 * Returns the number of unit to skip to be able to display up to `capacity` number of ticks
13867 * in `unit` for the given `min` / `max` range and respecting the interval steps constraints.
13868 */
13869function determineStepSize(min, max, unit, capacity) {
13870	var range = max - min;
13871	var interval = INTERVALS[unit];
13872	var milliseconds = interval.size;
13873	var steps = interval.steps;
13874	var i, ilen, factor;
13875
13876	if (!steps) {
13877		return Math.ceil(range / (capacity * milliseconds));
13878	}
13879
13880	for (i = 0, ilen = steps.length; i < ilen; ++i) {
13881		factor = steps[i];
13882		if (Math.ceil(range / (milliseconds * factor)) <= capacity) {
13883			break;
13884		}
13885	}
13886
13887	return factor;
13888}
13889
13890/**
13891 * Figures out what unit results in an appropriate number of auto-generated ticks
13892 */
13893function determineUnitForAutoTicks(minUnit, min, max, capacity) {
13894	var ilen = UNITS.length;
13895	var i, interval, factor;
13896
13897	for (i = UNITS.indexOf(minUnit); i < ilen - 1; ++i) {
13898		interval = INTERVALS[UNITS[i]];
13899		factor = interval.steps ? interval.steps[interval.steps.length - 1] : MAX_INTEGER;
13900
13901		if (interval.common && Math.ceil((max - min) / (factor * interval.size)) <= capacity) {
13902			return UNITS[i];
13903		}
13904	}
13905
13906	return UNITS[ilen - 1];
13907}
13908
13909/**
13910 * Figures out what unit to format a set of ticks with
13911 */
13912function determineUnitForFormatting(ticks, minUnit, min, max) {
13913	var duration = moment.duration(moment(max).diff(moment(min)));
13914	var ilen = UNITS.length;
13915	var i, unit;
13916
13917	for (i = ilen - 1; i >= UNITS.indexOf(minUnit); i--) {
13918		unit = UNITS[i];
13919		if (INTERVALS[unit].common && duration.as(unit) >= ticks.length) {
13920			return unit;
13921		}
13922	}
13923
13924	return UNITS[minUnit ? UNITS.indexOf(minUnit) : 0];
13925}
13926
13927function determineMajorUnit(unit) {
13928	for (var i = UNITS.indexOf(unit) + 1, ilen = UNITS.length; i < ilen; ++i) {
13929		if (INTERVALS[UNITS[i]].common) {
13930			return UNITS[i];
13931		}
13932	}
13933}
13934
13935/**
13936 * Generates a maximum of `capacity` timestamps between min and max, rounded to the
13937 * `minor` unit, aligned on the `major` unit and using the given scale time `options`.
13938 * Important: this method can return ticks outside the min and max range, it's the
13939 * responsibility of the calling code to clamp values if needed.
13940 */
13941function generate(min, max, capacity, options) {
13942	var timeOpts = options.time;
13943	var minor = timeOpts.unit || determineUnitForAutoTicks(timeOpts.minUnit, min, max, capacity);
13944	var major = determineMajorUnit(minor);
13945	var stepSize = helpers.valueOrDefault(timeOpts.stepSize, timeOpts.unitStepSize);
13946	var weekday = minor === 'week' ? timeOpts.isoWeekday : false;
13947	var majorTicksEnabled = options.ticks.major.enabled;
13948	var interval = INTERVALS[minor];
13949	var first = moment(min);
13950	var last = moment(max);
13951	var ticks = [];
13952	var time;
13953
13954	if (!stepSize) {
13955		stepSize = determineStepSize(min, max, minor, capacity);
13956	}
13957
13958	// For 'week' unit, handle the first day of week option
13959	if (weekday) {
13960		first = first.isoWeekday(weekday);
13961		last = last.isoWeekday(weekday);
13962	}
13963
13964	// Align first/last ticks on unit
13965	first = first.startOf(weekday ? 'day' : minor);
13966	last = last.startOf(weekday ? 'day' : minor);
13967
13968	// Make sure that the last tick include max
13969	if (last < max) {
13970		last.add(1, minor);
13971	}
13972
13973	time = moment(first);
13974
13975	if (majorTicksEnabled && major && !weekday && !timeOpts.round) {
13976		// Align the first tick on the previous `minor` unit aligned on the `major` unit:
13977		// we first aligned time on the previous `major` unit then add the number of full
13978		// stepSize there is between first and the previous major time.
13979		time.startOf(major);
13980		time.add(~~((first - time) / (interval.size * stepSize)) * stepSize, minor);
13981	}
13982
13983	for (; time < last; time.add(stepSize, minor)) {
13984		ticks.push(+time);
13985	}
13986
13987	ticks.push(+time);
13988
13989	return ticks;
13990}
13991
13992/**
13993 * Returns the right and left offsets from edges in the form of {left, right}.
13994 * Offsets are added when the `offset` option is true.
13995 */
13996function computeOffsets(table, ticks, min, max, options) {
13997	var left = 0;
13998	var right = 0;
13999	var upper, lower;
14000
14001	if (options.offset && ticks.length) {
14002		if (!options.time.min) {
14003			upper = ticks.length > 1 ? ticks[1] : max;
14004			lower = ticks[0];
14005			left = (
14006				interpolate(table, 'time', upper, 'pos') -
14007				interpolate(table, 'time', lower, 'pos')
14008			) / 2;
14009		}
14010		if (!options.time.max) {
14011			upper = ticks[ticks.length - 1];
14012			lower = ticks.length > 1 ? ticks[ticks.length - 2] : min;
14013			right = (
14014				interpolate(table, 'time', upper, 'pos') -
14015				interpolate(table, 'time', lower, 'pos')
14016			) / 2;
14017		}
14018	}
14019
14020	return {left: left, right: right};
14021}
14022
14023function ticksFromTimestamps(values, majorUnit) {
14024	var ticks = [];
14025	var i, ilen, value, major;
14026
14027	for (i = 0, ilen = values.length; i < ilen; ++i) {
14028		value = values[i];
14029		major = majorUnit ? value === +moment(value).startOf(majorUnit) : false;
14030
14031		ticks.push({
14032			value: value,
14033			major: major
14034		});
14035	}
14036
14037	return ticks;
14038}
14039
14040function determineLabelFormat(data, timeOpts) {
14041	var i, momentDate, hasTime;
14042	var ilen = data.length;
14043
14044	// find the label with the most parts (milliseconds, minutes, etc.)
14045	// format all labels with the same level of detail as the most specific label
14046	for (i = 0; i < ilen; i++) {
14047		momentDate = momentify(data[i], timeOpts);
14048		if (momentDate.millisecond() !== 0) {
14049			return 'MMM D, YYYY h:mm:ss.SSS a';
14050		}
14051		if (momentDate.second() !== 0 || momentDate.minute() !== 0 || momentDate.hour() !== 0) {
14052			hasTime = true;
14053		}
14054	}
14055	if (hasTime) {
14056		return 'MMM D, YYYY h:mm:ss a';
14057	}
14058	return 'MMM D, YYYY';
14059}
14060
14061module.exports = function() {
14062
14063	var defaultConfig = {
14064		position: 'bottom',
14065
14066		/**
14067		 * Data distribution along the scale:
14068		 * - 'linear': data are spread according to their time (distances can vary),
14069		 * - 'series': data are spread at the same distance from each other.
14070		 * @see https://github.com/chartjs/Chart.js/pull/4507
14071		 * @since 2.7.0
14072		 */
14073		distribution: 'linear',
14074
14075		/**
14076		 * Scale boundary strategy (bypassed by min/max time options)
14077		 * - `data`: make sure data are fully visible, ticks outside are removed
14078		 * - `ticks`: make sure ticks are fully visible, data outside are truncated
14079		 * @see https://github.com/chartjs/Chart.js/pull/4556
14080		 * @since 2.7.0
14081		 */
14082		bounds: 'data',
14083
14084		time: {
14085			parser: false, // false == a pattern string from http://momentjs.com/docs/#/parsing/string-format/ or a custom callback that converts its argument to a moment
14086			format: false, // DEPRECATED false == date objects, moment object, callback or a pattern string from http://momentjs.com/docs/#/parsing/string-format/
14087			unit: false, // false == automatic or override with week, month, year, etc.
14088			round: false, // none, or override with week, month, year, etc.
14089			displayFormat: false, // DEPRECATED
14090			isoWeekday: false, // override week start day - see http://momentjs.com/docs/#/get-set/iso-weekday/
14091			minUnit: 'millisecond',
14092
14093			// defaults to unit's corresponding unitFormat below or override using pattern string from http://momentjs.com/docs/#/displaying/format/
14094			displayFormats: {
14095				millisecond: 'h:mm:ss.SSS a', // 11:20:01.123 AM,
14096				second: 'h:mm:ss a', // 11:20:01 AM
14097				minute: 'h:mm a', // 11:20 AM
14098				hour: 'hA', // 5PM
14099				day: 'MMM D', // Sep 4
14100				week: 'll', // Week 46, or maybe "[W]WW - YYYY" ?
14101				month: 'MMM YYYY', // Sept 2015
14102				quarter: '[Q]Q - YYYY', // Q3
14103				year: 'YYYY' // 2015
14104			},
14105		},
14106		ticks: {
14107			autoSkip: false,
14108
14109			/**
14110			 * Ticks generation input values:
14111			 * - 'auto': generates "optimal" ticks based on scale size and time options.
14112			 * - 'data': generates ticks from data (including labels from data {t|x|y} objects).
14113			 * - 'labels': generates ticks from user given `data.labels` values ONLY.
14114			 * @see https://github.com/chartjs/Chart.js/pull/4507
14115			 * @since 2.7.0
14116			 */
14117			source: 'auto',
14118
14119			major: {
14120				enabled: false
14121			}
14122		}
14123	};
14124
14125	var TimeScale = Scale.extend({
14126		initialize: function() {
14127			if (!moment) {
14128				throw new Error('Chart.js - Moment.js could not be found! You must include it before Chart.js to use the time scale. Download at https://momentjs.com');
14129			}
14130
14131			this.mergeTicksOptions();
14132
14133			Scale.prototype.initialize.call(this);
14134		},
14135
14136		update: function() {
14137			var me = this;
14138			var options = me.options;
14139
14140			// DEPRECATIONS: output a message only one time per update
14141			if (options.time && options.time.format) {
14142				console.warn('options.time.format is deprecated and replaced by options.time.parser.');
14143			}
14144
14145			return Scale.prototype.update.apply(me, arguments);
14146		},
14147
14148		/**
14149		 * Allows data to be referenced via 't' attribute
14150		 */
14151		getRightValue: function(rawValue) {
14152			if (rawValue && rawValue.t !== undefined) {
14153				rawValue = rawValue.t;
14154			}
14155			return Scale.prototype.getRightValue.call(this, rawValue);
14156		},
14157
14158		determineDataLimits: function() {
14159			var me = this;
14160			var chart = me.chart;
14161			var timeOpts = me.options.time;
14162			var unit = timeOpts.unit || 'day';
14163			var min = MAX_INTEGER;
14164			var max = MIN_INTEGER;
14165			var timestamps = [];
14166			var datasets = [];
14167			var labels = [];
14168			var i, j, ilen, jlen, data, timestamp;
14169
14170			// Convert labels to timestamps
14171			for (i = 0, ilen = chart.data.labels.length; i < ilen; ++i) {
14172				labels.push(parse(chart.data.labels[i], me));
14173			}
14174
14175			// Convert data to timestamps
14176			for (i = 0, ilen = (chart.data.datasets || []).length; i < ilen; ++i) {
14177				if (chart.isDatasetVisible(i)) {
14178					data = chart.data.datasets[i].data;
14179
14180					// Let's consider that all data have the same format.
14181					if (helpers.isObject(data[0])) {
14182						datasets[i] = [];
14183
14184						for (j = 0, jlen = data.length; j < jlen; ++j) {
14185							timestamp = parse(data[j], me);
14186							timestamps.push(timestamp);
14187							datasets[i][j] = timestamp;
14188						}
14189					} else {
14190						timestamps.push.apply(timestamps, labels);
14191						datasets[i] = labels.slice(0);
14192					}
14193				} else {
14194					datasets[i] = [];
14195				}
14196			}
14197
14198			if (labels.length) {
14199				// Sort labels **after** data have been converted
14200				labels = arrayUnique(labels).sort(sorter);
14201				min = Math.min(min, labels[0]);
14202				max = Math.max(max, labels[labels.length - 1]);
14203			}
14204
14205			if (timestamps.length) {
14206				timestamps = arrayUnique(timestamps).sort(sorter);
14207				min = Math.min(min, timestamps[0]);
14208				max = Math.max(max, timestamps[timestamps.length - 1]);
14209			}
14210
14211			min = parse(timeOpts.min, me) || min;
14212			max = parse(timeOpts.max, me) || max;
14213
14214			// In case there is no valid min/max, set limits based on unit time option
14215			min = min === MAX_INTEGER ? +moment().startOf(unit) : min;
14216			max = max === MIN_INTEGER ? +moment().endOf(unit) + 1 : max;
14217
14218			// Make sure that max is strictly higher than min (required by the lookup table)
14219			me.min = Math.min(min, max);
14220			me.max = Math.max(min + 1, max);
14221
14222			// PRIVATE
14223			me._horizontal = me.isHorizontal();
14224			me._table = [];
14225			me._timestamps = {
14226				data: timestamps,
14227				datasets: datasets,
14228				labels: labels
14229			};
14230		},
14231
14232		buildTicks: function() {
14233			var me = this;
14234			var min = me.min;
14235			var max = me.max;
14236			var options = me.options;
14237			var timeOpts = options.time;
14238			var timestamps = [];
14239			var ticks = [];
14240			var i, ilen, timestamp;
14241
14242			switch (options.ticks.source) {
14243			case 'data':
14244				timestamps = me._timestamps.data;
14245				break;
14246			case 'labels':
14247				timestamps = me._timestamps.labels;
14248				break;
14249			case 'auto':
14250			default:
14251				timestamps = generate(min, max, me.getLabelCapacity(min), options);
14252			}
14253
14254			if (options.bounds === 'ticks' && timestamps.length) {
14255				min = timestamps[0];
14256				max = timestamps[timestamps.length - 1];
14257			}
14258
14259			// Enforce limits with user min/max options
14260			min = parse(timeOpts.min, me) || min;
14261			max = parse(timeOpts.max, me) || max;
14262
14263			// Remove ticks outside the min/max range
14264			for (i = 0, ilen = timestamps.length; i < ilen; ++i) {
14265				timestamp = timestamps[i];
14266				if (timestamp >= min && timestamp <= max) {
14267					ticks.push(timestamp);
14268				}
14269			}
14270
14271			me.min = min;
14272			me.max = max;
14273
14274			// PRIVATE
14275			me._unit = timeOpts.unit || determineUnitForFormatting(ticks, timeOpts.minUnit, me.min, me.max);
14276			me._majorUnit = determineMajorUnit(me._unit);
14277			me._table = buildLookupTable(me._timestamps.data, min, max, options.distribution);
14278			me._offsets = computeOffsets(me._table, ticks, min, max, options);
14279			me._labelFormat = determineLabelFormat(me._timestamps.data, timeOpts);
14280
14281			return ticksFromTimestamps(ticks, me._majorUnit);
14282		},
14283
14284		getLabelForIndex: function(index, datasetIndex) {
14285			var me = this;
14286			var data = me.chart.data;
14287			var timeOpts = me.options.time;
14288			var label = data.labels && index < data.labels.length ? data.labels[index] : '';
14289			var value = data.datasets[datasetIndex].data[index];
14290
14291			if (helpers.isObject(value)) {
14292				label = me.getRightValue(value);
14293			}
14294			if (timeOpts.tooltipFormat) {
14295				return momentify(label, timeOpts).format(timeOpts.tooltipFormat);
14296			}
14297			if (typeof label === 'string') {
14298				return label;
14299			}
14300
14301			return momentify(label, timeOpts).format(me._labelFormat);
14302		},
14303
14304		/**
14305		 * Function to format an individual tick mark
14306		 * @private
14307		 */
14308		tickFormatFunction: function(tick, index, ticks, formatOverride) {
14309			var me = this;
14310			var options = me.options;
14311			var time = tick.valueOf();
14312			var formats = options.time.displayFormats;
14313			var minorFormat = formats[me._unit];
14314			var majorUnit = me._majorUnit;
14315			var majorFormat = formats[majorUnit];
14316			var majorTime = tick.clone().startOf(majorUnit).valueOf();
14317			var majorTickOpts = options.ticks.major;
14318			var major = majorTickOpts.enabled && majorUnit && majorFormat && time === majorTime;
14319			var label = tick.format(formatOverride ? formatOverride : major ? majorFormat : minorFormat);
14320			var tickOpts = major ? majorTickOpts : options.ticks.minor;
14321			var formatter = helpers.valueOrDefault(tickOpts.callback, tickOpts.userCallback);
14322
14323			return formatter ? formatter(label, index, ticks) : label;
14324		},
14325
14326		convertTicksToLabels: function(ticks) {
14327			var labels = [];
14328			var i, ilen;
14329
14330			for (i = 0, ilen = ticks.length; i < ilen; ++i) {
14331				labels.push(this.tickFormatFunction(moment(ticks[i].value), i, ticks));
14332			}
14333
14334			return labels;
14335		},
14336
14337		/**
14338		 * @private
14339		 */
14340		getPixelForOffset: function(time) {
14341			var me = this;
14342			var size = me._horizontal ? me.width : me.height;
14343			var start = me._horizontal ? me.left : me.top;
14344			var pos = interpolate(me._table, 'time', time, 'pos');
14345
14346			return start + size * (me._offsets.left + pos) / (me._offsets.left + 1 + me._offsets.right);
14347		},
14348
14349		getPixelForValue: function(value, index, datasetIndex) {
14350			var me = this;
14351			var time = null;
14352
14353			if (index !== undefined && datasetIndex !== undefined) {
14354				time = me._timestamps.datasets[datasetIndex][index];
14355			}
14356
14357			if (time === null) {
14358				time = parse(value, me);
14359			}
14360
14361			if (time !== null) {
14362				return me.getPixelForOffset(time);
14363			}
14364		},
14365
14366		getPixelForTick: function(index) {
14367			var ticks = this.getTicks();
14368			return index >= 0 && index < ticks.length ?
14369				this.getPixelForOffset(ticks[index].value) :
14370				null;
14371		},
14372
14373		getValueForPixel: function(pixel) {
14374			var me = this;
14375			var size = me._horizontal ? me.width : me.height;
14376			var start = me._horizontal ? me.left : me.top;
14377			var pos = (size ? (pixel - start) / size : 0) * (me._offsets.left + 1 + me._offsets.left) - me._offsets.right;
14378			var time = interpolate(me._table, 'pos', pos, 'time');
14379
14380			return moment(time);
14381		},
14382
14383		/**
14384		 * Crude approximation of what the label width might be
14385		 * @private
14386		 */
14387		getLabelWidth: function(label) {
14388			var me = this;
14389			var ticksOpts = me.options.ticks;
14390			var tickLabelWidth = me.ctx.measureText(label).width;
14391			var angle = helpers.toRadians(ticksOpts.maxRotation);
14392			var cosRotation = Math.cos(angle);
14393			var sinRotation = Math.sin(angle);
14394			var tickFontSize = helpers.valueOrDefault(ticksOpts.fontSize, defaults.global.defaultFontSize);
14395
14396			return (tickLabelWidth * cosRotation) + (tickFontSize * sinRotation);
14397		},
14398
14399		/**
14400		 * @private
14401		 */
14402		getLabelCapacity: function(exampleTime) {
14403			var me = this;
14404
14405			var formatOverride = me.options.time.displayFormats.millisecond;	// Pick the longest format for guestimation
14406
14407			var exampleLabel = me.tickFormatFunction(moment(exampleTime), 0, [], formatOverride);
14408			var tickLabelWidth = me.getLabelWidth(exampleLabel);
14409			var innerWidth = me.isHorizontal() ? me.width : me.height;
14410
14411			var capacity = Math.floor(innerWidth / tickLabelWidth);
14412			return capacity > 0 ? capacity : 1;
14413		}
14414	});
14415
14416	scaleService.registerScaleType('time', TimeScale, defaultConfig);
14417};
14418
14419},{"1":1,"26":26,"33":33,"34":34,"46":46}]},{},[7])(7)
14420});