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1/*!
2 * Chart.js
3 * http://chartjs.org/
4 * Version: 2.7.1
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 e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({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(29)();
1674
1675Chart.helpers = require(45);
1676
1677// @todo dispatch these helpers into appropriated helpers/helpers.* file and write unit tests!
1678require(27)(Chart);
1679
1680Chart.defaults = require(25);
1681Chart.Element = require(26);
1682Chart.elements = require(40);
1683Chart.Interaction = require(28);
1684Chart.layouts = require(30);
1685Chart.platform = require(48);
1686Chart.plugins = require(31);
1687Chart.Ticks = require(34);
1688
1689require(22)(Chart);
1690require(23)(Chart);
1691require(24)(Chart);
1692require(33)(Chart);
1693require(32)(Chart);
1694require(35)(Chart);
1695
1696require(55)(Chart);
1697require(53)(Chart);
1698require(54)(Chart);
1699require(56)(Chart);
1700require(57)(Chart);
1701require(58)(Chart);
1702
1703// Controllers must be loaded after elements
1704// See Chart.core.datasetController.dataElementType
1705require(15)(Chart);
1706require(16)(Chart);
1707require(17)(Chart);
1708require(18)(Chart);
1709require(19)(Chart);
1710require(20)(Chart);
1711require(21)(Chart);
1712
1713require(8)(Chart);
1714require(9)(Chart);
1715require(10)(Chart);
1716require(11)(Chart);
1717require(12)(Chart);
1718require(13)(Chart);
1719require(14)(Chart);
1720
1721// Loading built-it plugins
1722var plugins = require(49);
1723for (var k in plugins) {
1724	if (plugins.hasOwnProperty(k)) {
1725		Chart.plugins.register(plugins[k]);
1726	}
1727}
1728
1729Chart.platform.initialize();
1730
1731module.exports = Chart;
1732if (typeof window !== 'undefined') {
1733	window.Chart = Chart;
1734}
1735
1736// DEPRECATIONS
1737
1738/**
1739 * Provided for backward compatibility, not available anymore
1740 * @namespace Chart.Legend
1741 * @deprecated since version 2.1.5
1742 * @todo remove at version 3
1743 * @private
1744 */
1745Chart.Legend = plugins.legend._element;
1746
1747/**
1748 * Provided for backward compatibility, not available anymore
1749 * @namespace Chart.Title
1750 * @deprecated since version 2.1.5
1751 * @todo remove at version 3
1752 * @private
1753 */
1754Chart.Title = plugins.title._element;
1755
1756/**
1757 * Provided for backward compatibility, use Chart.plugins instead
1758 * @namespace Chart.pluginService
1759 * @deprecated since version 2.1.5
1760 * @todo remove at version 3
1761 * @private
1762 */
1763Chart.pluginService = Chart.plugins;
1764
1765/**
1766 * Provided for backward compatibility, inheriting from Chart.PlugingBase has no
1767 * effect, instead simply create/register plugins via plain JavaScript objects.
1768 * @interface Chart.PluginBase
1769 * @deprecated since version 2.5.0
1770 * @todo remove at version 3
1771 * @private
1772 */
1773Chart.PluginBase = Chart.Element.extend({});
1774
1775/**
1776 * Provided for backward compatibility, use Chart.helpers.canvas instead.
1777 * @namespace Chart.canvasHelpers
1778 * @deprecated since version 2.6.0
1779 * @todo remove at version 3
1780 * @private
1781 */
1782Chart.canvasHelpers = Chart.helpers.canvas;
1783
1784/**
1785 * Provided for backward compatibility, use Chart.layouts instead.
1786 * @namespace Chart.layoutService
1787 * @deprecated since version 2.8.0
1788 * @todo remove at version 3
1789 * @private
1790 */
1791Chart.layoutService = Chart.layouts;
1792
1793},{"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,"40":40,"45":45,"48":48,"49":49,"53":53,"54":54,"55":55,"56":56,"57":57,"58":58,"8":8,"9":9}],8:[function(require,module,exports){
1794'use strict';
1795
1796module.exports = function(Chart) {
1797
1798	Chart.Bar = function(context, config) {
1799		config.type = 'bar';
1800
1801		return new Chart(context, config);
1802	};
1803
1804};
1805
1806},{}],9:[function(require,module,exports){
1807'use strict';
1808
1809module.exports = function(Chart) {
1810
1811	Chart.Bubble = function(context, config) {
1812		config.type = 'bubble';
1813		return new Chart(context, config);
1814	};
1815
1816};
1817
1818},{}],10:[function(require,module,exports){
1819'use strict';
1820
1821module.exports = function(Chart) {
1822
1823	Chart.Doughnut = function(context, config) {
1824		config.type = 'doughnut';
1825
1826		return new Chart(context, config);
1827	};
1828
1829};
1830
1831},{}],11:[function(require,module,exports){
1832'use strict';
1833
1834module.exports = function(Chart) {
1835
1836	Chart.Line = function(context, config) {
1837		config.type = 'line';
1838
1839		return new Chart(context, config);
1840	};
1841
1842};
1843
1844},{}],12:[function(require,module,exports){
1845'use strict';
1846
1847module.exports = function(Chart) {
1848
1849	Chart.PolarArea = function(context, config) {
1850		config.type = 'polarArea';
1851
1852		return new Chart(context, config);
1853	};
1854
1855};
1856
1857},{}],13:[function(require,module,exports){
1858'use strict';
1859
1860module.exports = function(Chart) {
1861
1862	Chart.Radar = function(context, config) {
1863		config.type = 'radar';
1864
1865		return new Chart(context, config);
1866	};
1867
1868};
1869
1870},{}],14:[function(require,module,exports){
1871'use strict';
1872
1873module.exports = function(Chart) {
1874	Chart.Scatter = function(context, config) {
1875		config.type = 'scatter';
1876		return new Chart(context, config);
1877	};
1878};
1879
1880},{}],15:[function(require,module,exports){
1881'use strict';
1882
1883var defaults = require(25);
1884var elements = require(40);
1885var helpers = require(45);
1886
1887defaults._set('bar', {
1888	hover: {
1889		mode: 'label'
1890	},
1891
1892	scales: {
1893		xAxes: [{
1894			type: 'category',
1895
1896			// Specific to Bar Controller
1897			categoryPercentage: 0.8,
1898			barPercentage: 0.9,
1899
1900			// offset settings
1901			offset: true,
1902
1903			// grid line settings
1904			gridLines: {
1905				offsetGridLines: true
1906			}
1907		}],
1908
1909		yAxes: [{
1910			type: 'linear'
1911		}]
1912	}
1913});
1914
1915defaults._set('horizontalBar', {
1916	hover: {
1917		mode: 'index',
1918		axis: 'y'
1919	},
1920
1921	scales: {
1922		xAxes: [{
1923			type: 'linear',
1924			position: 'bottom'
1925		}],
1926
1927		yAxes: [{
1928			position: 'left',
1929			type: 'category',
1930
1931			// Specific to Horizontal Bar Controller
1932			categoryPercentage: 0.8,
1933			barPercentage: 0.9,
1934
1935			// offset settings
1936			offset: true,
1937
1938			// grid line settings
1939			gridLines: {
1940				offsetGridLines: true
1941			}
1942		}]
1943	},
1944
1945	elements: {
1946		rectangle: {
1947			borderSkipped: 'left'
1948		}
1949	},
1950
1951	tooltips: {
1952		callbacks: {
1953			title: function(item, data) {
1954				// Pick first xLabel for now
1955				var title = '';
1956
1957				if (item.length > 0) {
1958					if (item[0].yLabel) {
1959						title = item[0].yLabel;
1960					} else if (data.labels.length > 0 && item[0].index < data.labels.length) {
1961						title = data.labels[item[0].index];
1962					}
1963				}
1964
1965				return title;
1966			},
1967
1968			label: function(item, data) {
1969				var datasetLabel = data.datasets[item.datasetIndex].label || '';
1970				return datasetLabel + ': ' + item.xLabel;
1971			}
1972		},
1973		mode: 'index',
1974		axis: 'y'
1975	}
1976});
1977
1978/**
1979 * Computes the "optimal" sample size to maintain bars equally sized while preventing overlap.
1980 * @private
1981 */
1982function computeMinSampleSize(scale, pixels) {
1983	var min = scale.isHorizontal() ? scale.width : scale.height;
1984	var ticks = scale.getTicks();
1985	var prev, curr, i, ilen;
1986
1987	for (i = 1, ilen = pixels.length; i < ilen; ++i) {
1988		min = Math.min(min, pixels[i] - pixels[i - 1]);
1989	}
1990
1991	for (i = 0, ilen = ticks.length; i < ilen; ++i) {
1992		curr = scale.getPixelForTick(i);
1993		min = i > 0 ? Math.min(min, curr - prev) : min;
1994		prev = curr;
1995	}
1996
1997	return min;
1998}
1999
2000/**
2001 * Computes an "ideal" category based on the absolute bar thickness or, if undefined or null,
2002 * uses the smallest interval (see computeMinSampleSize) that prevents bar overlapping. This
2003 * mode currently always generates bars equally sized (until we introduce scriptable options?).
2004 * @private
2005 */
2006function computeFitCategoryTraits(index, ruler, options) {
2007	var thickness = options.barThickness;
2008	var count = ruler.stackCount;
2009	var curr = ruler.pixels[index];
2010	var size, ratio;
2011
2012	if (helpers.isNullOrUndef(thickness)) {
2013		size = ruler.min * options.categoryPercentage;
2014		ratio = options.barPercentage;
2015	} else {
2016		// When bar thickness is enforced, category and bar percentages are ignored.
2017		// Note(SB): we could add support for relative bar thickness (e.g. barThickness: '50%')
2018		// and deprecate barPercentage since this value is ignored when thickness is absolute.
2019		size = thickness * count;
2020		ratio = 1;
2021	}
2022
2023	return {
2024		chunk: size / count,
2025		ratio: ratio,
2026		start: curr - (size / 2)
2027	};
2028}
2029
2030/**
2031 * Computes an "optimal" category that globally arranges bars side by side (no gap when
2032 * percentage options are 1), based on the previous and following categories. This mode
2033 * generates bars with different widths when data are not evenly spaced.
2034 * @private
2035 */
2036function computeFlexCategoryTraits(index, ruler, options) {
2037	var pixels = ruler.pixels;
2038	var curr = pixels[index];
2039	var prev = index > 0 ? pixels[index - 1] : null;
2040	var next = index < pixels.length - 1 ? pixels[index + 1] : null;
2041	var percent = options.categoryPercentage;
2042	var start, size;
2043
2044	if (prev === null) {
2045		// first data: its size is double based on the next point or,
2046		// if it's also the last data, we use the scale end extremity.
2047		prev = curr - (next === null ? ruler.end - curr : next - curr);
2048	}
2049
2050	if (next === null) {
2051		// last data: its size is also double based on the previous point.
2052		next = curr + curr - prev;
2053	}
2054
2055	start = curr - ((curr - prev) / 2) * percent;
2056	size = ((next - prev) / 2) * percent;
2057
2058	return {
2059		chunk: size / ruler.stackCount,
2060		ratio: options.barPercentage,
2061		start: start
2062	};
2063}
2064
2065module.exports = function(Chart) {
2066
2067	Chart.controllers.bar = Chart.DatasetController.extend({
2068
2069		dataElementType: elements.Rectangle,
2070
2071		initialize: function() {
2072			var me = this;
2073			var meta;
2074
2075			Chart.DatasetController.prototype.initialize.apply(me, arguments);
2076
2077			meta = me.getMeta();
2078			meta.stack = me.getDataset().stack;
2079			meta.bar = true;
2080		},
2081
2082		update: function(reset) {
2083			var me = this;
2084			var rects = me.getMeta().data;
2085			var i, ilen;
2086
2087			me._ruler = me.getRuler();
2088
2089			for (i = 0, ilen = rects.length; i < ilen; ++i) {
2090				me.updateElement(rects[i], i, reset);
2091			}
2092		},
2093
2094		updateElement: function(rectangle, index, reset) {
2095			var me = this;
2096			var chart = me.chart;
2097			var meta = me.getMeta();
2098			var dataset = me.getDataset();
2099			var custom = rectangle.custom || {};
2100			var rectangleOptions = chart.options.elements.rectangle;
2101
2102			rectangle._xScale = me.getScaleForId(meta.xAxisID);
2103			rectangle._yScale = me.getScaleForId(meta.yAxisID);
2104			rectangle._datasetIndex = me.index;
2105			rectangle._index = index;
2106
2107			rectangle._model = {
2108				datasetLabel: dataset.label,
2109				label: chart.data.labels[index],
2110				borderSkipped: custom.borderSkipped ? custom.borderSkipped : rectangleOptions.borderSkipped,
2111				backgroundColor: custom.backgroundColor ? custom.backgroundColor : helpers.valueAtIndexOrDefault(dataset.backgroundColor, index, rectangleOptions.backgroundColor),
2112				borderColor: custom.borderColor ? custom.borderColor : helpers.valueAtIndexOrDefault(dataset.borderColor, index, rectangleOptions.borderColor),
2113				borderWidth: custom.borderWidth ? custom.borderWidth : helpers.valueAtIndexOrDefault(dataset.borderWidth, index, rectangleOptions.borderWidth)
2114			};
2115
2116			me.updateElementGeometry(rectangle, index, reset);
2117
2118			rectangle.pivot();
2119		},
2120
2121		/**
2122		 * @private
2123		 */
2124		updateElementGeometry: function(rectangle, index, reset) {
2125			var me = this;
2126			var model = rectangle._model;
2127			var vscale = me.getValueScale();
2128			var base = vscale.getBasePixel();
2129			var horizontal = vscale.isHorizontal();
2130			var ruler = me._ruler || me.getRuler();
2131			var vpixels = me.calculateBarValuePixels(me.index, index);
2132			var ipixels = me.calculateBarIndexPixels(me.index, index, ruler);
2133
2134			model.horizontal = horizontal;
2135			model.base = reset ? base : vpixels.base;
2136			model.x = horizontal ? reset ? base : vpixels.head : ipixels.center;
2137			model.y = horizontal ? ipixels.center : reset ? base : vpixels.head;
2138			model.height = horizontal ? ipixels.size : undefined;
2139			model.width = horizontal ? undefined : ipixels.size;
2140		},
2141
2142		/**
2143		 * @private
2144		 */
2145		getValueScaleId: function() {
2146			return this.getMeta().yAxisID;
2147		},
2148
2149		/**
2150		 * @private
2151		 */
2152		getIndexScaleId: function() {
2153			return this.getMeta().xAxisID;
2154		},
2155
2156		/**
2157		 * @private
2158		 */
2159		getValueScale: function() {
2160			return this.getScaleForId(this.getValueScaleId());
2161		},
2162
2163		/**
2164		 * @private
2165		 */
2166		getIndexScale: function() {
2167			return this.getScaleForId(this.getIndexScaleId());
2168		},
2169
2170		/**
2171		 * Returns the stacks based on groups and bar visibility.
2172		 * @param {Number} [last] - The dataset index
2173		 * @returns {Array} The stack list
2174		 * @private
2175		 */
2176		_getStacks: function(last) {
2177			var me = this;
2178			var chart = me.chart;
2179			var scale = me.getIndexScale();
2180			var stacked = scale.options.stacked;
2181			var ilen = last === undefined ? chart.data.datasets.length : last + 1;
2182			var stacks = [];
2183			var i, meta;
2184
2185			for (i = 0; i < ilen; ++i) {
2186				meta = chart.getDatasetMeta(i);
2187				if (meta.bar && chart.isDatasetVisible(i) &&
2188					(stacked === false ||
2189					(stacked === true && stacks.indexOf(meta.stack) === -1) ||
2190					(stacked === undefined && (meta.stack === undefined || stacks.indexOf(meta.stack) === -1)))) {
2191					stacks.push(meta.stack);
2192				}
2193			}
2194
2195			return stacks;
2196		},
2197
2198		/**
2199		 * Returns the effective number of stacks based on groups and bar visibility.
2200		 * @private
2201		 */
2202		getStackCount: function() {
2203			return this._getStacks().length;
2204		},
2205
2206		/**
2207		 * Returns the stack index for the given dataset based on groups and bar visibility.
2208		 * @param {Number} [datasetIndex] - The dataset index
2209		 * @param {String} [name] - The stack name to find
2210		 * @returns {Number} The stack index
2211		 * @private
2212		 */
2213		getStackIndex: function(datasetIndex, name) {
2214			var stacks = this._getStacks(datasetIndex);
2215			var index = (name !== undefined)
2216				? stacks.indexOf(name)
2217				: -1; // indexOf returns -1 if element is not present
2218
2219			return (index === -1)
2220				? stacks.length - 1
2221				: index;
2222		},
2223
2224		/**
2225		 * @private
2226		 */
2227		getRuler: function() {
2228			var me = this;
2229			var scale = me.getIndexScale();
2230			var stackCount = me.getStackCount();
2231			var datasetIndex = me.index;
2232			var isHorizontal = scale.isHorizontal();
2233			var start = isHorizontal ? scale.left : scale.top;
2234			var end = start + (isHorizontal ? scale.width : scale.height);
2235			var pixels = [];
2236			var i, ilen, min;
2237
2238			for (i = 0, ilen = me.getMeta().data.length; i < ilen; ++i) {
2239				pixels.push(scale.getPixelForValue(null, i, datasetIndex));
2240			}
2241
2242			min = helpers.isNullOrUndef(scale.options.barThickness)
2243				? computeMinSampleSize(scale, pixels)
2244				: -1;
2245
2246			return {
2247				min: min,
2248				pixels: pixels,
2249				start: start,
2250				end: end,
2251				stackCount: stackCount,
2252				scale: scale
2253			};
2254		},
2255
2256		/**
2257		 * Note: pixel values are not clamped to the scale area.
2258		 * @private
2259		 */
2260		calculateBarValuePixels: function(datasetIndex, index) {
2261			var me = this;
2262			var chart = me.chart;
2263			var meta = me.getMeta();
2264			var scale = me.getValueScale();
2265			var datasets = chart.data.datasets;
2266			var value = scale.getRightValue(datasets[datasetIndex].data[index]);
2267			var stacked = scale.options.stacked;
2268			var stack = meta.stack;
2269			var start = 0;
2270			var i, imeta, ivalue, base, head, size;
2271
2272			if (stacked || (stacked === undefined && stack !== undefined)) {
2273				for (i = 0; i < datasetIndex; ++i) {
2274					imeta = chart.getDatasetMeta(i);
2275
2276					if (imeta.bar &&
2277						imeta.stack === stack &&
2278						imeta.controller.getValueScaleId() === scale.id &&
2279						chart.isDatasetVisible(i)) {
2280
2281						ivalue = scale.getRightValue(datasets[i].data[index]);
2282						if ((value < 0 && ivalue < 0) || (value >= 0 && ivalue > 0)) {
2283							start += ivalue;
2284						}
2285					}
2286				}
2287			}
2288
2289			base = scale.getPixelForValue(start);
2290			head = scale.getPixelForValue(start + value);
2291			size = (head - base) / 2;
2292
2293			return {
2294				size: size,
2295				base: base,
2296				head: head,
2297				center: head + size / 2
2298			};
2299		},
2300
2301		/**
2302		 * @private
2303		 */
2304		calculateBarIndexPixels: function(datasetIndex, index, ruler) {
2305			var me = this;
2306			var options = ruler.scale.options;
2307			var range = options.barThickness === 'flex'
2308				? computeFlexCategoryTraits(index, ruler, options)
2309				: computeFitCategoryTraits(index, ruler, options);
2310
2311			var stackIndex = me.getStackIndex(datasetIndex, me.getMeta().stack);
2312			var center = range.start + (range.chunk * stackIndex) + (range.chunk / 2);
2313			var size = Math.min(
2314				helpers.valueOrDefault(options.maxBarThickness, Infinity),
2315				range.chunk * range.ratio);
2316
2317			return {
2318				base: center - size / 2,
2319				head: center + size / 2,
2320				center: center,
2321				size: size
2322			};
2323		},
2324
2325		draw: function() {
2326			var me = this;
2327			var chart = me.chart;
2328			var scale = me.getValueScale();
2329			var rects = me.getMeta().data;
2330			var dataset = me.getDataset();
2331			var ilen = rects.length;
2332			var i = 0;
2333
2334			helpers.canvas.clipArea(chart.ctx, chart.chartArea);
2335
2336			for (; i < ilen; ++i) {
2337				if (!isNaN(scale.getRightValue(dataset.data[i]))) {
2338					rects[i].draw();
2339				}
2340			}
2341
2342			helpers.canvas.unclipArea(chart.ctx);
2343		},
2344
2345		setHoverStyle: function(rectangle) {
2346			var dataset = this.chart.data.datasets[rectangle._datasetIndex];
2347			var index = rectangle._index;
2348			var custom = rectangle.custom || {};
2349			var model = rectangle._model;
2350
2351			model.backgroundColor = custom.hoverBackgroundColor ? custom.hoverBackgroundColor : helpers.valueAtIndexOrDefault(dataset.hoverBackgroundColor, index, helpers.getHoverColor(model.backgroundColor));
2352			model.borderColor = custom.hoverBorderColor ? custom.hoverBorderColor : helpers.valueAtIndexOrDefault(dataset.hoverBorderColor, index, helpers.getHoverColor(model.borderColor));
2353			model.borderWidth = custom.hoverBorderWidth ? custom.hoverBorderWidth : helpers.valueAtIndexOrDefault(dataset.hoverBorderWidth, index, model.borderWidth);
2354		},
2355
2356		removeHoverStyle: function(rectangle) {
2357			var dataset = this.chart.data.datasets[rectangle._datasetIndex];
2358			var index = rectangle._index;
2359			var custom = rectangle.custom || {};
2360			var model = rectangle._model;
2361			var rectangleElementOptions = this.chart.options.elements.rectangle;
2362
2363			model.backgroundColor = custom.backgroundColor ? custom.backgroundColor : helpers.valueAtIndexOrDefault(dataset.backgroundColor, index, rectangleElementOptions.backgroundColor);
2364			model.borderColor = custom.borderColor ? custom.borderColor : helpers.valueAtIndexOrDefault(dataset.borderColor, index, rectangleElementOptions.borderColor);
2365			model.borderWidth = custom.borderWidth ? custom.borderWidth : helpers.valueAtIndexOrDefault(dataset.borderWidth, index, rectangleElementOptions.borderWidth);
2366		}
2367	});
2368
2369	Chart.controllers.horizontalBar = Chart.controllers.bar.extend({
2370		/**
2371		 * @private
2372		 */
2373		getValueScaleId: function() {
2374			return this.getMeta().xAxisID;
2375		},
2376
2377		/**
2378		 * @private
2379		 */
2380		getIndexScaleId: function() {
2381			return this.getMeta().yAxisID;
2382		}
2383	});
2384};
2385
2386},{"25":25,"40":40,"45":45}],16:[function(require,module,exports){
2387'use strict';
2388
2389var defaults = require(25);
2390var elements = require(40);
2391var helpers = require(45);
2392
2393defaults._set('bubble', {
2394	hover: {
2395		mode: 'single'
2396	},
2397
2398	scales: {
2399		xAxes: [{
2400			type: 'linear', // bubble should probably use a linear scale by default
2401			position: 'bottom',
2402			id: 'x-axis-0' // need an ID so datasets can reference the scale
2403		}],
2404		yAxes: [{
2405			type: 'linear',
2406			position: 'left',
2407			id: 'y-axis-0'
2408		}]
2409	},
2410
2411	tooltips: {
2412		callbacks: {
2413			title: function() {
2414				// Title doesn't make sense for scatter since we format the data as a point
2415				return '';
2416			},
2417			label: function(item, data) {
2418				var datasetLabel = data.datasets[item.datasetIndex].label || '';
2419				var dataPoint = data.datasets[item.datasetIndex].data[item.index];
2420				return datasetLabel + ': (' + item.xLabel + ', ' + item.yLabel + ', ' + dataPoint.r + ')';
2421			}
2422		}
2423	}
2424});
2425
2426
2427module.exports = function(Chart) {
2428
2429	Chart.controllers.bubble = Chart.DatasetController.extend({
2430		/**
2431		 * @protected
2432		 */
2433		dataElementType: elements.Point,
2434
2435		/**
2436		 * @protected
2437		 */
2438		update: function(reset) {
2439			var me = this;
2440			var meta = me.getMeta();
2441			var points = meta.data;
2442
2443			// Update Points
2444			helpers.each(points, function(point, index) {
2445				me.updateElement(point, index, reset);
2446			});
2447		},
2448
2449		/**
2450		 * @protected
2451		 */
2452		updateElement: function(point, index, reset) {
2453			var me = this;
2454			var meta = me.getMeta();
2455			var custom = point.custom || {};
2456			var xScale = me.getScaleForId(meta.xAxisID);
2457			var yScale = me.getScaleForId(meta.yAxisID);
2458			var options = me._resolveElementOptions(point, index);
2459			var data = me.getDataset().data[index];
2460			var dsIndex = me.index;
2461
2462			var x = reset ? xScale.getPixelForDecimal(0.5) : xScale.getPixelForValue(typeof data === 'object' ? data : NaN, index, dsIndex);
2463			var y = reset ? yScale.getBasePixel() : yScale.getPixelForValue(data, index, dsIndex);
2464
2465			point._xScale = xScale;
2466			point._yScale = yScale;
2467			point._options = options;
2468			point._datasetIndex = dsIndex;
2469			point._index = index;
2470			point._model = {
2471				backgroundColor: options.backgroundColor,
2472				borderColor: options.borderColor,
2473				borderWidth: options.borderWidth,
2474				hitRadius: options.hitRadius,
2475				pointStyle: options.pointStyle,
2476				radius: reset ? 0 : options.radius,
2477				skip: custom.skip || isNaN(x) || isNaN(y),
2478				x: x,
2479				y: y,
2480			};
2481
2482			point.pivot();
2483		},
2484
2485		/**
2486		 * @protected
2487		 */
2488		setHoverStyle: function(point) {
2489			var model = point._model;
2490			var options = point._options;
2491
2492			model.backgroundColor = helpers.valueOrDefault(options.hoverBackgroundColor, helpers.getHoverColor(options.backgroundColor));
2493			model.borderColor = helpers.valueOrDefault(options.hoverBorderColor, helpers.getHoverColor(options.borderColor));
2494			model.borderWidth = helpers.valueOrDefault(options.hoverBorderWidth, options.borderWidth);
2495			model.radius = options.radius + options.hoverRadius;
2496		},
2497
2498		/**
2499		 * @protected
2500		 */
2501		removeHoverStyle: function(point) {
2502			var model = point._model;
2503			var options = point._options;
2504
2505			model.backgroundColor = options.backgroundColor;
2506			model.borderColor = options.borderColor;
2507			model.borderWidth = options.borderWidth;
2508			model.radius = options.radius;
2509		},
2510
2511		/**
2512		 * @private
2513		 */
2514		_resolveElementOptions: function(point, index) {
2515			var me = this;
2516			var chart = me.chart;
2517			var datasets = chart.data.datasets;
2518			var dataset = datasets[me.index];
2519			var custom = point.custom || {};
2520			var options = chart.options.elements.point;
2521			var resolve = helpers.options.resolve;
2522			var data = dataset.data[index];
2523			var values = {};
2524			var i, ilen, key;
2525
2526			// Scriptable options
2527			var context = {
2528				chart: chart,
2529				dataIndex: index,
2530				dataset: dataset,
2531				datasetIndex: me.index
2532			};
2533
2534			var keys = [
2535				'backgroundColor',
2536				'borderColor',
2537				'borderWidth',
2538				'hoverBackgroundColor',
2539				'hoverBorderColor',
2540				'hoverBorderWidth',
2541				'hoverRadius',
2542				'hitRadius',
2543				'pointStyle'
2544			];
2545
2546			for (i = 0, ilen = keys.length; i < ilen; ++i) {
2547				key = keys[i];
2548				values[key] = resolve([
2549					custom[key],
2550					dataset[key],
2551					options[key]
2552				], context, index);
2553			}
2554
2555			// Custom radius resolution
2556			values.radius = resolve([
2557				custom.radius,
2558				data ? data.r : undefined,
2559				dataset.radius,
2560				options.radius
2561			], context, index);
2562
2563			return values;
2564		}
2565	});
2566};
2567
2568},{"25":25,"40":40,"45":45}],17:[function(require,module,exports){
2569'use strict';
2570
2571var defaults = require(25);
2572var elements = require(40);
2573var helpers = require(45);
2574
2575defaults._set('doughnut', {
2576	animation: {
2577		// Boolean - Whether we animate the rotation of the Doughnut
2578		animateRotate: true,
2579		// Boolean - Whether we animate scaling the Doughnut from the centre
2580		animateScale: false
2581	},
2582	hover: {
2583		mode: 'single'
2584	},
2585	legendCallback: function(chart) {
2586		var text = [];
2587		text.push('<ul class="' + chart.id + '-legend">');
2588
2589		var data = chart.data;
2590		var datasets = data.datasets;
2591		var labels = data.labels;
2592
2593		if (datasets.length) {
2594			for (var i = 0; i < datasets[0].data.length; ++i) {
2595				text.push('<li><span style="background-color:' + datasets[0].backgroundColor[i] + '"></span>');
2596				if (labels[i]) {
2597					text.push(labels[i]);
2598				}
2599				text.push('</li>');
2600			}
2601		}
2602
2603		text.push('</ul>');
2604		return text.join('');
2605	},
2606	legend: {
2607		labels: {
2608			generateLabels: function(chart) {
2609				var data = chart.data;
2610				if (data.labels.length && data.datasets.length) {
2611					return data.labels.map(function(label, i) {
2612						var meta = chart.getDatasetMeta(0);
2613						var ds = data.datasets[0];
2614						var arc = meta.data[i];
2615						var custom = arc && arc.custom || {};
2616						var valueAtIndexOrDefault = helpers.valueAtIndexOrDefault;
2617						var arcOpts = chart.options.elements.arc;
2618						var fill = custom.backgroundColor ? custom.backgroundColor : valueAtIndexOrDefault(ds.backgroundColor, i, arcOpts.backgroundColor);
2619						var stroke = custom.borderColor ? custom.borderColor : valueAtIndexOrDefault(ds.borderColor, i, arcOpts.borderColor);
2620						var bw = custom.borderWidth ? custom.borderWidth : valueAtIndexOrDefault(ds.borderWidth, i, arcOpts.borderWidth);
2621
2622						return {
2623							text: label,
2624							fillStyle: fill,
2625							strokeStyle: stroke,
2626							lineWidth: bw,
2627							hidden: isNaN(ds.data[i]) || meta.data[i].hidden,
2628
2629							// Extra data used for toggling the correct item
2630							index: i
2631						};
2632					});
2633				}
2634				return [];
2635			}
2636		},
2637
2638		onClick: function(e, legendItem) {
2639			var index = legendItem.index;
2640			var chart = this.chart;
2641			var i, ilen, meta;
2642
2643			for (i = 0, ilen = (chart.data.datasets || []).length; i < ilen; ++i) {
2644				meta = chart.getDatasetMeta(i);
2645				// toggle visibility of index if exists
2646				if (meta.data[index]) {
2647					meta.data[index].hidden = !meta.data[index].hidden;
2648				}
2649			}
2650
2651			chart.update();
2652		}
2653	},
2654
2655	// The percentage of the chart that we cut out of the middle.
2656	cutoutPercentage: 50,
2657
2658	// The rotation of the chart, where the first data arc begins.
2659	rotation: Math.PI * -0.5,
2660
2661	// The total circumference of the chart.
2662	circumference: Math.PI * 2.0,
2663
2664	// Need to override these to give a nice default
2665	tooltips: {
2666		callbacks: {
2667			title: function() {
2668				return '';
2669			},
2670			label: function(tooltipItem, data) {
2671				var dataLabel = data.labels[tooltipItem.index];
2672				var value = ': ' + data.datasets[tooltipItem.datasetIndex].data[tooltipItem.index];
2673
2674				if (helpers.isArray(dataLabel)) {
2675					// show value on first line of multiline label
2676					// need to clone because we are changing the value
2677					dataLabel = dataLabel.slice();
2678					dataLabel[0] += value;
2679				} else {
2680					dataLabel += value;
2681				}
2682
2683				return dataLabel;
2684			}
2685		}
2686	}
2687});
2688
2689defaults._set('pie', helpers.clone(defaults.doughnut));
2690defaults._set('pie', {
2691	cutoutPercentage: 0
2692});
2693
2694module.exports = function(Chart) {
2695
2696	Chart.controllers.doughnut = Chart.controllers.pie = Chart.DatasetController.extend({
2697
2698		dataElementType: elements.Arc,
2699
2700		linkScales: helpers.noop,
2701
2702		// Get index of the dataset in relation to the visible datasets. This allows determining the inner and outer radius correctly
2703		getRingIndex: function(datasetIndex) {
2704			var ringIndex = 0;
2705
2706			for (var j = 0; j < datasetIndex; ++j) {
2707				if (this.chart.isDatasetVisible(j)) {
2708					++ringIndex;
2709				}
2710			}
2711
2712			return ringIndex;
2713		},
2714
2715		update: function(reset) {
2716			var me = this;
2717			var chart = me.chart;
2718			var chartArea = chart.chartArea;
2719			var opts = chart.options;
2720			var arcOpts = opts.elements.arc;
2721			var availableWidth = chartArea.right - chartArea.left - arcOpts.borderWidth;
2722			var availableHeight = chartArea.bottom - chartArea.top - arcOpts.borderWidth;
2723			var minSize = Math.min(availableWidth, availableHeight);
2724			var offset = {x: 0, y: 0};
2725			var meta = me.getMeta();
2726			var cutoutPercentage = opts.cutoutPercentage;
2727			var circumference = opts.circumference;
2728
2729			// If the chart's circumference isn't a full circle, calculate minSize as a ratio of the width/height of the arc
2730			if (circumference < Math.PI * 2.0) {
2731				var startAngle = opts.rotation % (Math.PI * 2.0);
2732				startAngle += Math.PI * 2.0 * (startAngle >= Math.PI ? -1 : startAngle < -Math.PI ? 1 : 0);
2733				var endAngle = startAngle + circumference;
2734				var start = {x: Math.cos(startAngle), y: Math.sin(startAngle)};
2735				var end = {x: Math.cos(endAngle), y: Math.sin(endAngle)};
2736				var contains0 = (startAngle <= 0 && endAngle >= 0) || (startAngle <= Math.PI * 2.0 && Math.PI * 2.0 <= endAngle);
2737				var contains90 = (startAngle <= Math.PI * 0.5 && Math.PI * 0.5 <= endAngle) || (startAngle <= Math.PI * 2.5 && Math.PI * 2.5 <= endAngle);
2738				var contains180 = (startAngle <= -Math.PI && -Math.PI <= endAngle) || (startAngle <= Math.PI && Math.PI <= endAngle);
2739				var contains270 = (startAngle <= -Math.PI * 0.5 && -Math.PI * 0.5 <= endAngle) || (startAngle <= Math.PI * 1.5 && Math.PI * 1.5 <= endAngle);
2740				var cutout = cutoutPercentage / 100.0;
2741				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))};
2742				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))};
2743				var size = {width: (max.x - min.x) * 0.5, height: (max.y - min.y) * 0.5};
2744				minSize = Math.min(availableWidth / size.width, availableHeight / size.height);
2745				offset = {x: (max.x + min.x) * -0.5, y: (max.y + min.y) * -0.5};
2746			}
2747
2748			chart.borderWidth = me.getMaxBorderWidth(meta.data);
2749			chart.outerRadius = Math.max((minSize - chart.borderWidth) / 2, 0);
2750			chart.innerRadius = Math.max(cutoutPercentage ? (chart.outerRadius / 100) * (cutoutPercentage) : 0, 0);
2751			chart.radiusLength = (chart.outerRadius - chart.innerRadius) / chart.getVisibleDatasetCount();
2752			chart.offsetX = offset.x * chart.outerRadius;
2753			chart.offsetY = offset.y * chart.outerRadius;
2754
2755			meta.total = me.calculateTotal();
2756
2757			me.outerRadius = chart.outerRadius - (chart.radiusLength * me.getRingIndex(me.index));
2758			me.innerRadius = Math.max(me.outerRadius - chart.radiusLength, 0);
2759
2760			helpers.each(meta.data, function(arc, index) {
2761				me.updateElement(arc, index, reset);
2762			});
2763		},
2764
2765		updateElement: function(arc, index, reset) {
2766			var me = this;
2767			var chart = me.chart;
2768			var chartArea = chart.chartArea;
2769			var opts = chart.options;
2770			var animationOpts = opts.animation;
2771			var centerX = (chartArea.left + chartArea.right) / 2;
2772			var centerY = (chartArea.top + chartArea.bottom) / 2;
2773			var startAngle = opts.rotation; // non reset case handled later
2774			var endAngle = opts.rotation; // non reset case handled later
2775			var dataset = me.getDataset();
2776			var circumference = reset && animationOpts.animateRotate ? 0 : arc.hidden ? 0 : me.calculateCircumference(dataset.data[index]) * (opts.circumference / (2.0 * Math.PI));
2777			var innerRadius = reset && animationOpts.animateScale ? 0 : me.innerRadius;
2778			var outerRadius = reset && animationOpts.animateScale ? 0 : me.outerRadius;
2779			var valueAtIndexOrDefault = helpers.valueAtIndexOrDefault;
2780
2781			helpers.extend(arc, {
2782				// Utility
2783				_datasetIndex: me.index,
2784				_index: index,
2785
2786				// Desired view properties
2787				_model: {
2788					x: centerX + chart.offsetX,
2789					y: centerY + chart.offsetY,
2790					startAngle: startAngle,
2791					endAngle: endAngle,
2792					circumference: circumference,
2793					outerRadius: outerRadius,
2794					innerRadius: innerRadius,
2795					label: valueAtIndexOrDefault(dataset.label, index, chart.data.labels[index])
2796				}
2797			});
2798
2799			var model = arc._model;
2800			// Resets the visual styles
2801			this.removeHoverStyle(arc);
2802
2803			// Set correct angles if not resetting
2804			if (!reset || !animationOpts.animateRotate) {
2805				if (index === 0) {
2806					model.startAngle = opts.rotation;
2807				} else {
2808					model.startAngle = me.getMeta().data[index - 1]._model.endAngle;
2809				}
2810
2811				model.endAngle = model.startAngle + model.circumference;
2812			}
2813
2814			arc.pivot();
2815		},
2816
2817		removeHoverStyle: function(arc) {
2818			Chart.DatasetController.prototype.removeHoverStyle.call(this, arc, this.chart.options.elements.arc);
2819		},
2820
2821		calculateTotal: function() {
2822			var dataset = this.getDataset();
2823			var meta = this.getMeta();
2824			var total = 0;
2825			var value;
2826
2827			helpers.each(meta.data, function(element, index) {
2828				value = dataset.data[index];
2829				if (!isNaN(value) && !element.hidden) {
2830					total += Math.abs(value);
2831				}
2832			});
2833
2834			/* if (total === 0) {
2835				total = NaN;
2836			}*/
2837
2838			return total;
2839		},
2840
2841		calculateCircumference: function(value) {
2842			var total = this.getMeta().total;
2843			if (total > 0 && !isNaN(value)) {
2844				return (Math.PI * 2.0) * (value / total);
2845			}
2846			return 0;
2847		},
2848
2849		// gets the max border or hover width to properly scale pie charts
2850		getMaxBorderWidth: function(arcs) {
2851			var max = 0;
2852			var index = this.index;
2853			var length = arcs.length;
2854			var borderWidth;
2855			var hoverWidth;
2856
2857			for (var i = 0; i < length; i++) {
2858				borderWidth = arcs[i]._model ? arcs[i]._model.borderWidth : 0;
2859				hoverWidth = arcs[i]._chart ? arcs[i]._chart.config.data.datasets[index].hoverBorderWidth : 0;
2860
2861				max = borderWidth > max ? borderWidth : max;
2862				max = hoverWidth > max ? hoverWidth : max;
2863			}
2864			return max;
2865		}
2866	});
2867};
2868
2869},{"25":25,"40":40,"45":45}],18:[function(require,module,exports){
2870'use strict';
2871
2872var defaults = require(25);
2873var elements = require(40);
2874var helpers = require(45);
2875
2876defaults._set('line', {
2877	showLines: true,
2878	spanGaps: false,
2879
2880	hover: {
2881		mode: 'label'
2882	},
2883
2884	scales: {
2885		xAxes: [{
2886			type: 'category',
2887			id: 'x-axis-0'
2888		}],
2889		yAxes: [{
2890			type: 'linear',
2891			id: 'y-axis-0'
2892		}]
2893	}
2894});
2895
2896module.exports = function(Chart) {
2897
2898	function lineEnabled(dataset, options) {
2899		return helpers.valueOrDefault(dataset.showLine, options.showLines);
2900	}
2901
2902	Chart.controllers.line = Chart.DatasetController.extend({
2903
2904		datasetElementType: elements.Line,
2905
2906		dataElementType: elements.Point,
2907
2908		update: function(reset) {
2909			var me = this;
2910			var meta = me.getMeta();
2911			var line = meta.dataset;
2912			var points = meta.data || [];
2913			var options = me.chart.options;
2914			var lineElementOptions = options.elements.line;
2915			var scale = me.getScaleForId(meta.yAxisID);
2916			var i, ilen, custom;
2917			var dataset = me.getDataset();
2918			var showLine = lineEnabled(dataset, options);
2919
2920			// Update Line
2921			if (showLine) {
2922				custom = line.custom || {};
2923
2924				// Compatibility: If the properties are defined with only the old name, use those values
2925				if ((dataset.tension !== undefined) && (dataset.lineTension === undefined)) {
2926					dataset.lineTension = dataset.tension;
2927				}
2928
2929				// Utility
2930				line._scale = scale;
2931				line._datasetIndex = me.index;
2932				// Data
2933				line._children = points;
2934				// Model
2935				line._model = {
2936					// Appearance
2937					// The default behavior of lines is to break at null values, according
2938					// to https://github.com/chartjs/Chart.js/issues/2435#issuecomment-216718158
2939					// This option gives lines the ability to span gaps
2940					spanGaps: dataset.spanGaps ? dataset.spanGaps : options.spanGaps,
2941					tension: custom.tension ? custom.tension : helpers.valueOrDefault(dataset.lineTension, lineElementOptions.tension),
2942					backgroundColor: custom.backgroundColor ? custom.backgroundColor : (dataset.backgroundColor || lineElementOptions.backgroundColor),
2943					borderWidth: custom.borderWidth ? custom.borderWidth : (dataset.borderWidth || lineElementOptions.borderWidth),
2944					borderColor: custom.borderColor ? custom.borderColor : (dataset.borderColor || lineElementOptions.borderColor),
2945					borderCapStyle: custom.borderCapStyle ? custom.borderCapStyle : (dataset.borderCapStyle || lineElementOptions.borderCapStyle),
2946					borderDash: custom.borderDash ? custom.borderDash : (dataset.borderDash || lineElementOptions.borderDash),
2947					borderDashOffset: custom.borderDashOffset ? custom.borderDashOffset : (dataset.borderDashOffset || lineElementOptions.borderDashOffset),
2948					borderJoinStyle: custom.borderJoinStyle ? custom.borderJoinStyle : (dataset.borderJoinStyle || lineElementOptions.borderJoinStyle),
2949					fill: custom.fill ? custom.fill : (dataset.fill !== undefined ? dataset.fill : lineElementOptions.fill),
2950					steppedLine: custom.steppedLine ? custom.steppedLine : helpers.valueOrDefault(dataset.steppedLine, lineElementOptions.stepped),
2951					cubicInterpolationMode: custom.cubicInterpolationMode ? custom.cubicInterpolationMode : helpers.valueOrDefault(dataset.cubicInterpolationMode, lineElementOptions.cubicInterpolationMode),
2952				};
2953
2954				line.pivot();
2955			}
2956
2957			// Update Points
2958			for (i = 0, ilen = points.length; i < ilen; ++i) {
2959				me.updateElement(points[i], i, reset);
2960			}
2961
2962			if (showLine && line._model.tension !== 0) {
2963				me.updateBezierControlPoints();
2964			}
2965
2966			// Now pivot the point for animation
2967			for (i = 0, ilen = points.length; i < ilen; ++i) {
2968				points[i].pivot();
2969			}
2970		},
2971
2972		getPointBackgroundColor: function(point, index) {
2973			var backgroundColor = this.chart.options.elements.point.backgroundColor;
2974			var dataset = this.getDataset();
2975			var custom = point.custom || {};
2976
2977			if (custom.backgroundColor) {
2978				backgroundColor = custom.backgroundColor;
2979			} else if (dataset.pointBackgroundColor) {
2980				backgroundColor = helpers.valueAtIndexOrDefault(dataset.pointBackgroundColor, index, backgroundColor);
2981			} else if (dataset.backgroundColor) {
2982				backgroundColor = dataset.backgroundColor;
2983			}
2984
2985			return backgroundColor;
2986		},
2987
2988		getPointBorderColor: function(point, index) {
2989			var borderColor = this.chart.options.elements.point.borderColor;
2990			var dataset = this.getDataset();
2991			var custom = point.custom || {};
2992
2993			if (custom.borderColor) {
2994				borderColor = custom.borderColor;
2995			} else if (dataset.pointBorderColor) {
2996				borderColor = helpers.valueAtIndexOrDefault(dataset.pointBorderColor, index, borderColor);
2997			} else if (dataset.borderColor) {
2998				borderColor = dataset.borderColor;
2999			}
3000
3001			return borderColor;
3002		},
3003
3004		getPointBorderWidth: function(point, index) {
3005			var borderWidth = this.chart.options.elements.point.borderWidth;
3006			var dataset = this.getDataset();
3007			var custom = point.custom || {};
3008
3009			if (!isNaN(custom.borderWidth)) {
3010				borderWidth = custom.borderWidth;
3011			} else if (!isNaN(dataset.pointBorderWidth) || helpers.isArray(dataset.pointBorderWidth)) {
3012				borderWidth = helpers.valueAtIndexOrDefault(dataset.pointBorderWidth, index, borderWidth);
3013			} else if (!isNaN(dataset.borderWidth)) {
3014				borderWidth = dataset.borderWidth;
3015			}
3016
3017			return borderWidth;
3018		},
3019
3020		updateElement: function(point, index, reset) {
3021			var me = this;
3022			var meta = me.getMeta();
3023			var custom = point.custom || {};
3024			var dataset = me.getDataset();
3025			var datasetIndex = me.index;
3026			var value = dataset.data[index];
3027			var yScale = me.getScaleForId(meta.yAxisID);
3028			var xScale = me.getScaleForId(meta.xAxisID);
3029			var pointOptions = me.chart.options.elements.point;
3030			var x, y;
3031
3032			// Compatibility: If the properties are defined with only the old name, use those values
3033			if ((dataset.radius !== undefined) && (dataset.pointRadius === undefined)) {
3034				dataset.pointRadius = dataset.radius;
3035			}
3036			if ((dataset.hitRadius !== undefined) && (dataset.pointHitRadius === undefined)) {
3037				dataset.pointHitRadius = dataset.hitRadius;
3038			}
3039
3040			x = xScale.getPixelForValue(typeof value === 'object' ? value : NaN, index, datasetIndex);
3041			y = reset ? yScale.getBasePixel() : me.calculatePointY(value, index, datasetIndex);
3042
3043			// Utility
3044			point._xScale = xScale;
3045			point._yScale = yScale;
3046			point._datasetIndex = datasetIndex;
3047			point._index = index;
3048
3049			// Desired view properties
3050			point._model = {
3051				x: x,
3052				y: y,
3053				skip: custom.skip || isNaN(x) || isNaN(y),
3054				// Appearance
3055				radius: custom.radius || helpers.valueAtIndexOrDefault(dataset.pointRadius, index, pointOptions.radius),
3056				pointStyle: custom.pointStyle || helpers.valueAtIndexOrDefault(dataset.pointStyle, index, pointOptions.pointStyle),
3057				backgroundColor: me.getPointBackgroundColor(point, index),
3058				borderColor: me.getPointBorderColor(point, index),
3059				borderWidth: me.getPointBorderWidth(point, index),
3060				tension: meta.dataset._model ? meta.dataset._model.tension : 0,
3061				steppedLine: meta.dataset._model ? meta.dataset._model.steppedLine : false,
3062				// Tooltip
3063				hitRadius: custom.hitRadius || helpers.valueAtIndexOrDefault(dataset.pointHitRadius, index, pointOptions.hitRadius)
3064			};
3065		},
3066
3067		calculatePointY: function(value, index, datasetIndex) {
3068			var me = this;
3069			var chart = me.chart;
3070			var meta = me.getMeta();
3071			var yScale = me.getScaleForId(meta.yAxisID);
3072			var sumPos = 0;
3073			var sumNeg = 0;
3074			var i, ds, dsMeta;
3075
3076			if (yScale.options.stacked) {
3077				for (i = 0; i < datasetIndex; i++) {
3078					ds = chart.data.datasets[i];
3079					dsMeta = chart.getDatasetMeta(i);
3080					if (dsMeta.type === 'line' && dsMeta.yAxisID === yScale.id && chart.isDatasetVisible(i)) {
3081						var stackedRightValue = Number(yScale.getRightValue(ds.data[index]));
3082						if (stackedRightValue < 0) {
3083							sumNeg += stackedRightValue || 0;
3084						} else {
3085							sumPos += stackedRightValue || 0;
3086						}
3087					}
3088				}
3089
3090				var rightValue = Number(yScale.getRightValue(value));
3091				if (rightValue < 0) {
3092					return yScale.getPixelForValue(sumNeg + rightValue);
3093				}
3094				return yScale.getPixelForValue(sumPos + rightValue);
3095			}
3096
3097			return yScale.getPixelForValue(value);
3098		},
3099
3100		updateBezierControlPoints: function() {
3101			var me = this;
3102			var meta = me.getMeta();
3103			var area = me.chart.chartArea;
3104			var points = (meta.data || []);
3105			var i, ilen, point, model, controlPoints;
3106
3107			// Only consider points that are drawn in case the spanGaps option is used
3108			if (meta.dataset._model.spanGaps) {
3109				points = points.filter(function(pt) {
3110					return !pt._model.skip;
3111				});
3112			}
3113
3114			function capControlPoint(pt, min, max) {
3115				return Math.max(Math.min(pt, max), min);
3116			}
3117
3118			if (meta.dataset._model.cubicInterpolationMode === 'monotone') {
3119				helpers.splineCurveMonotone(points);
3120			} else {
3121				for (i = 0, ilen = points.length; i < ilen; ++i) {
3122					point = points[i];
3123					model = point._model;
3124					controlPoints = helpers.splineCurve(
3125						helpers.previousItem(points, i)._model,
3126						model,
3127						helpers.nextItem(points, i)._model,
3128						meta.dataset._model.tension
3129					);
3130					model.controlPointPreviousX = controlPoints.previous.x;
3131					model.controlPointPreviousY = controlPoints.previous.y;
3132					model.controlPointNextX = controlPoints.next.x;
3133					model.controlPointNextY = controlPoints.next.y;
3134				}
3135			}
3136
3137			if (me.chart.options.elements.line.capBezierPoints) {
3138				for (i = 0, ilen = points.length; i < ilen; ++i) {
3139					model = points[i]._model;
3140					model.controlPointPreviousX = capControlPoint(model.controlPointPreviousX, area.left, area.right);
3141					model.controlPointPreviousY = capControlPoint(model.controlPointPreviousY, area.top, area.bottom);
3142					model.controlPointNextX = capControlPoint(model.controlPointNextX, area.left, area.right);
3143					model.controlPointNextY = capControlPoint(model.controlPointNextY, area.top, area.bottom);
3144				}
3145			}
3146		},
3147
3148		draw: function() {
3149			var me = this;
3150			var chart = me.chart;
3151			var meta = me.getMeta();
3152			var points = meta.data || [];
3153			var area = chart.chartArea;
3154			var ilen = points.length;
3155			var i = 0;
3156
3157			helpers.canvas.clipArea(chart.ctx, area);
3158
3159			if (lineEnabled(me.getDataset(), chart.options)) {
3160				meta.dataset.draw();
3161			}
3162
3163			helpers.canvas.unclipArea(chart.ctx);
3164
3165			// Draw the points
3166			for (; i < ilen; ++i) {
3167				points[i].draw(area);
3168			}
3169		},
3170
3171		setHoverStyle: function(point) {
3172			// Point
3173			var dataset = this.chart.data.datasets[point._datasetIndex];
3174			var index = point._index;
3175			var custom = point.custom || {};
3176			var model = point._model;
3177
3178			model.radius = custom.hoverRadius || helpers.valueAtIndexOrDefault(dataset.pointHoverRadius, index, this.chart.options.elements.point.hoverRadius);
3179			model.backgroundColor = custom.hoverBackgroundColor || helpers.valueAtIndexOrDefault(dataset.pointHoverBackgroundColor, index, helpers.getHoverColor(model.backgroundColor));
3180			model.borderColor = custom.hoverBorderColor || helpers.valueAtIndexOrDefault(dataset.pointHoverBorderColor, index, helpers.getHoverColor(model.borderColor));
3181			model.borderWidth = custom.hoverBorderWidth || helpers.valueAtIndexOrDefault(dataset.pointHoverBorderWidth, index, model.borderWidth);
3182		},
3183
3184		removeHoverStyle: function(point) {
3185			var me = this;
3186			var dataset = me.chart.data.datasets[point._datasetIndex];
3187			var index = point._index;
3188			var custom = point.custom || {};
3189			var model = point._model;
3190
3191			// Compatibility: If the properties are defined with only the old name, use those values
3192			if ((dataset.radius !== undefined) && (dataset.pointRadius === undefined)) {
3193				dataset.pointRadius = dataset.radius;
3194			}
3195
3196			model.radius = custom.radius || helpers.valueAtIndexOrDefault(dataset.pointRadius, index, me.chart.options.elements.point.radius);
3197			model.backgroundColor = me.getPointBackgroundColor(point, index);
3198			model.borderColor = me.getPointBorderColor(point, index);
3199			model.borderWidth = me.getPointBorderWidth(point, index);
3200		}
3201	});
3202};
3203
3204},{"25":25,"40":40,"45":45}],19:[function(require,module,exports){
3205'use strict';
3206
3207var defaults = require(25);
3208var elements = require(40);
3209var helpers = require(45);
3210
3211defaults._set('polarArea', {
3212	scale: {
3213		type: 'radialLinear',
3214		angleLines: {
3215			display: false
3216		},
3217		gridLines: {
3218			circular: true
3219		},
3220		pointLabels: {
3221			display: false
3222		},
3223		ticks: {
3224			beginAtZero: true
3225		}
3226	},
3227
3228	// Boolean - Whether to animate the rotation of the chart
3229	animation: {
3230		animateRotate: true,
3231		animateScale: true
3232	},
3233
3234	startAngle: -0.5 * Math.PI,
3235	legendCallback: function(chart) {
3236		var text = [];
3237		text.push('<ul class="' + chart.id + '-legend">');
3238
3239		var data = chart.data;
3240		var datasets = data.datasets;
3241		var labels = data.labels;
3242
3243		if (datasets.length) {
3244			for (var i = 0; i < datasets[0].data.length; ++i) {
3245				text.push('<li><span style="background-color:' + datasets[0].backgroundColor[i] + '"></span>');
3246				if (labels[i]) {
3247					text.push(labels[i]);
3248				}
3249				text.push('</li>');
3250			}
3251		}
3252
3253		text.push('</ul>');
3254		return text.join('');
3255	},
3256	legend: {
3257		labels: {
3258			generateLabels: function(chart) {
3259				var data = chart.data;
3260				if (data.labels.length && data.datasets.length) {
3261					return data.labels.map(function(label, i) {
3262						var meta = chart.getDatasetMeta(0);
3263						var ds = data.datasets[0];
3264						var arc = meta.data[i];
3265						var custom = arc.custom || {};
3266						var valueAtIndexOrDefault = helpers.valueAtIndexOrDefault;
3267						var arcOpts = chart.options.elements.arc;
3268						var fill = custom.backgroundColor ? custom.backgroundColor : valueAtIndexOrDefault(ds.backgroundColor, i, arcOpts.backgroundColor);
3269						var stroke = custom.borderColor ? custom.borderColor : valueAtIndexOrDefault(ds.borderColor, i, arcOpts.borderColor);
3270						var bw = custom.borderWidth ? custom.borderWidth : valueAtIndexOrDefault(ds.borderWidth, i, arcOpts.borderWidth);
3271
3272						return {
3273							text: label,
3274							fillStyle: fill,
3275							strokeStyle: stroke,
3276							lineWidth: bw,
3277							hidden: isNaN(ds.data[i]) || meta.data[i].hidden,
3278
3279							// Extra data used for toggling the correct item
3280							index: i
3281						};
3282					});
3283				}
3284				return [];
3285			}
3286		},
3287
3288		onClick: function(e, legendItem) {
3289			var index = legendItem.index;
3290			var chart = this.chart;
3291			var i, ilen, meta;
3292
3293			for (i = 0, ilen = (chart.data.datasets || []).length; i < ilen; ++i) {
3294				meta = chart.getDatasetMeta(i);
3295				meta.data[index].hidden = !meta.data[index].hidden;
3296			}
3297
3298			chart.update();
3299		}
3300	},
3301
3302	// Need to override these to give a nice default
3303	tooltips: {
3304		callbacks: {
3305			title: function() {
3306				return '';
3307			},
3308			label: function(item, data) {
3309				return data.labels[item.index] + ': ' + item.yLabel;
3310			}
3311		}
3312	}
3313});
3314
3315module.exports = function(Chart) {
3316
3317	Chart.controllers.polarArea = Chart.DatasetController.extend({
3318
3319		dataElementType: elements.Arc,
3320
3321		linkScales: helpers.noop,
3322
3323		update: function(reset) {
3324			var me = this;
3325			var chart = me.chart;
3326			var chartArea = chart.chartArea;
3327			var meta = me.getMeta();
3328			var opts = chart.options;
3329			var arcOpts = opts.elements.arc;
3330			var minSize = Math.min(chartArea.right - chartArea.left, chartArea.bottom - chartArea.top);
3331			chart.outerRadius = Math.max((minSize - arcOpts.borderWidth / 2) / 2, 0);
3332			chart.innerRadius = Math.max(opts.cutoutPercentage ? (chart.outerRadius / 100) * (opts.cutoutPercentage) : 1, 0);
3333			chart.radiusLength = (chart.outerRadius - chart.innerRadius) / chart.getVisibleDatasetCount();
3334
3335			me.outerRadius = chart.outerRadius - (chart.radiusLength * me.index);
3336			me.innerRadius = me.outerRadius - chart.radiusLength;
3337
3338			meta.count = me.countVisibleElements();
3339
3340			helpers.each(meta.data, function(arc, index) {
3341				me.updateElement(arc, index, reset);
3342			});
3343		},
3344
3345		updateElement: function(arc, index, reset) {
3346			var me = this;
3347			var chart = me.chart;
3348			var dataset = me.getDataset();
3349			var opts = chart.options;
3350			var animationOpts = opts.animation;
3351			var scale = chart.scale;
3352			var labels = chart.data.labels;
3353
3354			var circumference = me.calculateCircumference(dataset.data[index]);
3355			var centerX = scale.xCenter;
3356			var centerY = scale.yCenter;
3357
3358			// If there is NaN data before us, we need to calculate the starting angle correctly.
3359			// We could be way more efficient here, but its unlikely that the polar area chart will have a lot of data
3360			var visibleCount = 0;
3361			var meta = me.getMeta();
3362			for (var i = 0; i < index; ++i) {
3363				if (!isNaN(dataset.data[i]) && !meta.data[i].hidden) {
3364					++visibleCount;
3365				}
3366			}
3367
3368			// var negHalfPI = -0.5 * Math.PI;
3369			var datasetStartAngle = opts.startAngle;
3370			var distance = arc.hidden ? 0 : scale.getDistanceFromCenterForValue(dataset.data[index]);
3371			var startAngle = datasetStartAngle + (circumference * visibleCount);
3372			var endAngle = startAngle + (arc.hidden ? 0 : circumference);
3373
3374			var resetRadius = animationOpts.animateScale ? 0 : scale.getDistanceFromCenterForValue(dataset.data[index]);
3375
3376			helpers.extend(arc, {
3377				// Utility
3378				_datasetIndex: me.index,
3379				_index: index,
3380				_scale: scale,
3381
3382				// Desired view properties
3383				_model: {
3384					x: centerX,
3385					y: centerY,
3386					innerRadius: 0,
3387					outerRadius: reset ? resetRadius : distance,
3388					startAngle: reset && animationOpts.animateRotate ? datasetStartAngle : startAngle,
3389					endAngle: reset && animationOpts.animateRotate ? datasetStartAngle : endAngle,
3390					label: helpers.valueAtIndexOrDefault(labels, index, labels[index])
3391				}
3392			});
3393
3394			// Apply border and fill style
3395			me.removeHoverStyle(arc);
3396
3397			arc.pivot();
3398		},
3399
3400		removeHoverStyle: function(arc) {
3401			Chart.DatasetController.prototype.removeHoverStyle.call(this, arc, this.chart.options.elements.arc);
3402		},
3403
3404		countVisibleElements: function() {
3405			var dataset = this.getDataset();
3406			var meta = this.getMeta();
3407			var count = 0;
3408
3409			helpers.each(meta.data, function(element, index) {
3410				if (!isNaN(dataset.data[index]) && !element.hidden) {
3411					count++;
3412				}
3413			});
3414
3415			return count;
3416		},
3417
3418		calculateCircumference: function(value) {
3419			var count = this.getMeta().count;
3420			if (count > 0 && !isNaN(value)) {
3421				return (2 * Math.PI) / count;
3422			}
3423			return 0;
3424		}
3425	});
3426};
3427
3428},{"25":25,"40":40,"45":45}],20:[function(require,module,exports){
3429'use strict';
3430
3431var defaults = require(25);
3432var elements = require(40);
3433var helpers = require(45);
3434
3435defaults._set('radar', {
3436	scale: {
3437		type: 'radialLinear'
3438	},
3439	elements: {
3440		line: {
3441			tension: 0 // no bezier in radar
3442		}
3443	}
3444});
3445
3446module.exports = function(Chart) {
3447
3448	Chart.controllers.radar = Chart.DatasetController.extend({
3449
3450		datasetElementType: elements.Line,
3451
3452		dataElementType: elements.Point,
3453
3454		linkScales: helpers.noop,
3455
3456		update: function(reset) {
3457			var me = this;
3458			var meta = me.getMeta();
3459			var line = meta.dataset;
3460			var points = meta.data;
3461			var custom = line.custom || {};
3462			var dataset = me.getDataset();
3463			var lineElementOptions = me.chart.options.elements.line;
3464			var scale = me.chart.scale;
3465
3466			// Compatibility: If the properties are defined with only the old name, use those values
3467			if ((dataset.tension !== undefined) && (dataset.lineTension === undefined)) {
3468				dataset.lineTension = dataset.tension;
3469			}
3470
3471			helpers.extend(meta.dataset, {
3472				// Utility
3473				_datasetIndex: me.index,
3474				_scale: scale,
3475				// Data
3476				_children: points,
3477				_loop: true,
3478				// Model
3479				_model: {
3480					// Appearance
3481					tension: custom.tension ? custom.tension : helpers.valueOrDefault(dataset.lineTension, lineElementOptions.tension),
3482					backgroundColor: custom.backgroundColor ? custom.backgroundColor : (dataset.backgroundColor || lineElementOptions.backgroundColor),
3483					borderWidth: custom.borderWidth ? custom.borderWidth : (dataset.borderWidth || lineElementOptions.borderWidth),
3484					borderColor: custom.borderColor ? custom.borderColor : (dataset.borderColor || lineElementOptions.borderColor),
3485					fill: custom.fill ? custom.fill : (dataset.fill !== undefined ? dataset.fill : lineElementOptions.fill),
3486					borderCapStyle: custom.borderCapStyle ? custom.borderCapStyle : (dataset.borderCapStyle || lineElementOptions.borderCapStyle),
3487					borderDash: custom.borderDash ? custom.borderDash : (dataset.borderDash || lineElementOptions.borderDash),
3488					borderDashOffset: custom.borderDashOffset ? custom.borderDashOffset : (dataset.borderDashOffset || lineElementOptions.borderDashOffset),
3489					borderJoinStyle: custom.borderJoinStyle ? custom.borderJoinStyle : (dataset.borderJoinStyle || lineElementOptions.borderJoinStyle),
3490				}
3491			});
3492
3493			meta.dataset.pivot();
3494
3495			// Update Points
3496			helpers.each(points, function(point, index) {
3497				me.updateElement(point, index, reset);
3498			}, me);
3499
3500			// Update bezier control points
3501			me.updateBezierControlPoints();
3502		},
3503		updateElement: function(point, index, reset) {
3504			var me = this;
3505			var custom = point.custom || {};
3506			var dataset = me.getDataset();
3507			var scale = me.chart.scale;
3508			var pointElementOptions = me.chart.options.elements.point;
3509			var pointPosition = scale.getPointPositionForValue(index, dataset.data[index]);
3510
3511			// Compatibility: If the properties are defined with only the old name, use those values
3512			if ((dataset.radius !== undefined) && (dataset.pointRadius === undefined)) {
3513				dataset.pointRadius = dataset.radius;
3514			}
3515			if ((dataset.hitRadius !== undefined) && (dataset.pointHitRadius === undefined)) {
3516				dataset.pointHitRadius = dataset.hitRadius;
3517			}
3518
3519			helpers.extend(point, {
3520				// Utility
3521				_datasetIndex: me.index,
3522				_index: index,
3523				_scale: scale,
3524
3525				// Desired view properties
3526				_model: {
3527					x: reset ? scale.xCenter : pointPosition.x, // value not used in dataset scale, but we want a consistent API between scales
3528					y: reset ? scale.yCenter : pointPosition.y,
3529
3530					// Appearance
3531					tension: custom.tension ? custom.tension : helpers.valueOrDefault(dataset.lineTension, me.chart.options.elements.line.tension),
3532					radius: custom.radius ? custom.radius : helpers.valueAtIndexOrDefault(dataset.pointRadius, index, pointElementOptions.radius),
3533					backgroundColor: custom.backgroundColor ? custom.backgroundColor : helpers.valueAtIndexOrDefault(dataset.pointBackgroundColor, index, pointElementOptions.backgroundColor),
3534					borderColor: custom.borderColor ? custom.borderColor : helpers.valueAtIndexOrDefault(dataset.pointBorderColor, index, pointElementOptions.borderColor),
3535					borderWidth: custom.borderWidth ? custom.borderWidth : helpers.valueAtIndexOrDefault(dataset.pointBorderWidth, index, pointElementOptions.borderWidth),
3536					pointStyle: custom.pointStyle ? custom.pointStyle : helpers.valueAtIndexOrDefault(dataset.pointStyle, index, pointElementOptions.pointStyle),
3537
3538					// Tooltip
3539					hitRadius: custom.hitRadius ? custom.hitRadius : helpers.valueAtIndexOrDefault(dataset.pointHitRadius, index, pointElementOptions.hitRadius)
3540				}
3541			});
3542
3543			point._model.skip = custom.skip ? custom.skip : (isNaN(point._model.x) || isNaN(point._model.y));
3544		},
3545		updateBezierControlPoints: function() {
3546			var chartArea = this.chart.chartArea;
3547			var meta = this.getMeta();
3548
3549			helpers.each(meta.data, function(point, index) {
3550				var model = point._model;
3551				var controlPoints = helpers.splineCurve(
3552					helpers.previousItem(meta.data, index, true)._model,
3553					model,
3554					helpers.nextItem(meta.data, index, true)._model,
3555					model.tension
3556				);
3557
3558				// Prevent the bezier going outside of the bounds of the graph
3559				model.controlPointPreviousX = Math.max(Math.min(controlPoints.previous.x, chartArea.right), chartArea.left);
3560				model.controlPointPreviousY = Math.max(Math.min(controlPoints.previous.y, chartArea.bottom), chartArea.top);
3561
3562				model.controlPointNextX = Math.max(Math.min(controlPoints.next.x, chartArea.right), chartArea.left);
3563				model.controlPointNextY = Math.max(Math.min(controlPoints.next.y, chartArea.bottom), chartArea.top);
3564
3565				// Now pivot the point for animation
3566				point.pivot();
3567			});
3568		},
3569
3570		setHoverStyle: function(point) {
3571			// Point
3572			var dataset = this.chart.data.datasets[point._datasetIndex];
3573			var custom = point.custom || {};
3574			var index = point._index;
3575			var model = point._model;
3576
3577			model.radius = custom.hoverRadius ? custom.hoverRadius : helpers.valueAtIndexOrDefault(dataset.pointHoverRadius, index, this.chart.options.elements.point.hoverRadius);
3578			model.backgroundColor = custom.hoverBackgroundColor ? custom.hoverBackgroundColor : helpers.valueAtIndexOrDefault(dataset.pointHoverBackgroundColor, index, helpers.getHoverColor(model.backgroundColor));
3579			model.borderColor = custom.hoverBorderColor ? custom.hoverBorderColor : helpers.valueAtIndexOrDefault(dataset.pointHoverBorderColor, index, helpers.getHoverColor(model.borderColor));
3580			model.borderWidth = custom.hoverBorderWidth ? custom.hoverBorderWidth : helpers.valueAtIndexOrDefault(dataset.pointHoverBorderWidth, index, model.borderWidth);
3581		},
3582
3583		removeHoverStyle: function(point) {
3584			var dataset = this.chart.data.datasets[point._datasetIndex];
3585			var custom = point.custom || {};
3586			var index = point._index;
3587			var model = point._model;
3588			var pointElementOptions = this.chart.options.elements.point;
3589
3590			model.radius = custom.radius ? custom.radius : helpers.valueAtIndexOrDefault(dataset.pointRadius, index, pointElementOptions.radius);
3591			model.backgroundColor = custom.backgroundColor ? custom.backgroundColor : helpers.valueAtIndexOrDefault(dataset.pointBackgroundColor, index, pointElementOptions.backgroundColor);
3592			model.borderColor = custom.borderColor ? custom.borderColor : helpers.valueAtIndexOrDefault(dataset.pointBorderColor, index, pointElementOptions.borderColor);
3593			model.borderWidth = custom.borderWidth ? custom.borderWidth : helpers.valueAtIndexOrDefault(dataset.pointBorderWidth, index, pointElementOptions.borderWidth);
3594		}
3595	});
3596};
3597
3598},{"25":25,"40":40,"45":45}],21:[function(require,module,exports){
3599'use strict';
3600
3601var defaults = require(25);
3602
3603defaults._set('scatter', {
3604	hover: {
3605		mode: 'single'
3606	},
3607
3608	scales: {
3609		xAxes: [{
3610			id: 'x-axis-1',    // need an ID so datasets can reference the scale
3611			type: 'linear',    // scatter should not use a category axis
3612			position: 'bottom'
3613		}],
3614		yAxes: [{
3615			id: 'y-axis-1',
3616			type: 'linear',
3617			position: 'left'
3618		}]
3619	},
3620
3621	showLines: false,
3622
3623	tooltips: {
3624		callbacks: {
3625			title: function() {
3626				return '';     // doesn't make sense for scatter since data are formatted as a point
3627			},
3628			label: function(item) {
3629				return '(' + item.xLabel + ', ' + item.yLabel + ')';
3630			}
3631		}
3632	}
3633});
3634
3635module.exports = function(Chart) {
3636
3637	// Scatter charts use line controllers
3638	Chart.controllers.scatter = Chart.controllers.line;
3639
3640};
3641
3642},{"25":25}],22:[function(require,module,exports){
3643/* global window: false */
3644'use strict';
3645
3646var defaults = require(25);
3647var Element = require(26);
3648var helpers = require(45);
3649
3650defaults._set('global', {
3651	animation: {
3652		duration: 1000,
3653		easing: 'easeOutQuart',
3654		onProgress: helpers.noop,
3655		onComplete: helpers.noop
3656	}
3657});
3658
3659module.exports = function(Chart) {
3660
3661	Chart.Animation = Element.extend({
3662		chart: null, // the animation associated chart instance
3663		currentStep: 0, // the current animation step
3664		numSteps: 60, // default number of steps
3665		easing: '', // the easing to use for this animation
3666		render: null, // render function used by the animation service
3667
3668		onAnimationProgress: null, // user specified callback to fire on each step of the animation
3669		onAnimationComplete: null, // user specified callback to fire when the animation finishes
3670	});
3671
3672	Chart.animationService = {
3673		frameDuration: 17,
3674		animations: [],
3675		dropFrames: 0,
3676		request: null,
3677
3678		/**
3679		 * @param {Chart} chart - The chart to animate.
3680		 * @param {Chart.Animation} animation - The animation that we will animate.
3681		 * @param {Number} duration - The animation duration in ms.
3682		 * @param {Boolean} lazy - if true, the chart is not marked as animating to enable more responsive interactions
3683		 */
3684		addAnimation: function(chart, animation, duration, lazy) {
3685			var animations = this.animations;
3686			var i, ilen;
3687
3688			animation.chart = chart;
3689
3690			if (!lazy) {
3691				chart.animating = true;
3692			}
3693
3694			for (i = 0, ilen = animations.length; i < ilen; ++i) {
3695				if (animations[i].chart === chart) {
3696					animations[i] = animation;
3697					return;
3698				}
3699			}
3700
3701			animations.push(animation);
3702
3703			// If there are no animations queued, manually kickstart a digest, for lack of a better word
3704			if (animations.length === 1) {
3705				this.requestAnimationFrame();
3706			}
3707		},
3708
3709		cancelAnimation: function(chart) {
3710			var index = helpers.findIndex(this.animations, function(animation) {
3711				return animation.chart === chart;
3712			});
3713
3714			if (index !== -1) {
3715				this.animations.splice(index, 1);
3716				chart.animating = false;
3717			}
3718		},
3719
3720		requestAnimationFrame: function() {
3721			var me = this;
3722			if (me.request === null) {
3723				// Skip animation frame requests until the active one is executed.
3724				// This can happen when processing mouse events, e.g. 'mousemove'
3725				// and 'mouseout' events will trigger multiple renders.
3726				me.request = helpers.requestAnimFrame.call(window, function() {
3727					me.request = null;
3728					me.startDigest();
3729				});
3730			}
3731		},
3732
3733		/**
3734		 * @private
3735		 */
3736		startDigest: function() {
3737			var me = this;
3738			var startTime = Date.now();
3739			var framesToDrop = 0;
3740
3741			if (me.dropFrames > 1) {
3742				framesToDrop = Math.floor(me.dropFrames);
3743				me.dropFrames = me.dropFrames % 1;
3744			}
3745
3746			me.advance(1 + framesToDrop);
3747
3748			var endTime = Date.now();
3749
3750			me.dropFrames += (endTime - startTime) / me.frameDuration;
3751
3752			// Do we have more stuff to animate?
3753			if (me.animations.length > 0) {
3754				me.requestAnimationFrame();
3755			}
3756		},
3757
3758		/**
3759		 * @private
3760		 */
3761		advance: function(count) {
3762			var animations = this.animations;
3763			var animation, chart;
3764			var i = 0;
3765
3766			while (i < animations.length) {
3767				animation = animations[i];
3768				chart = animation.chart;
3769
3770				animation.currentStep = (animation.currentStep || 0) + count;
3771				animation.currentStep = Math.min(animation.currentStep, animation.numSteps);
3772
3773				helpers.callback(animation.render, [chart, animation], chart);
3774				helpers.callback(animation.onAnimationProgress, [animation], chart);
3775
3776				if (animation.currentStep >= animation.numSteps) {
3777					helpers.callback(animation.onAnimationComplete, [animation], chart);
3778					chart.animating = false;
3779					animations.splice(i, 1);
3780				} else {
3781					++i;
3782				}
3783			}
3784		}
3785	};
3786
3787	/**
3788	 * Provided for backward compatibility, use Chart.Animation instead
3789	 * @prop Chart.Animation#animationObject
3790	 * @deprecated since version 2.6.0
3791	 * @todo remove at version 3
3792	 */
3793	Object.defineProperty(Chart.Animation.prototype, 'animationObject', {
3794		get: function() {
3795			return this;
3796		}
3797	});
3798
3799	/**
3800	 * Provided for backward compatibility, use Chart.Animation#chart instead
3801	 * @prop Chart.Animation#chartInstance
3802	 * @deprecated since version 2.6.0
3803	 * @todo remove at version 3
3804	 */
3805	Object.defineProperty(Chart.Animation.prototype, 'chartInstance', {
3806		get: function() {
3807			return this.chart;
3808		},
3809		set: function(value) {
3810			this.chart = value;
3811		}
3812	});
3813
3814};
3815
3816},{"25":25,"26":26,"45":45}],23:[function(require,module,exports){
3817'use strict';
3818
3819var defaults = require(25);
3820var helpers = require(45);
3821var Interaction = require(28);
3822var layouts = require(30);
3823var platform = require(48);
3824var plugins = require(31);
3825
3826module.exports = function(Chart) {
3827
3828	// Create a dictionary of chart types, to allow for extension of existing types
3829	Chart.types = {};
3830
3831	// Store a reference to each instance - allowing us to globally resize chart instances on window resize.
3832	// Destroy method on the chart will remove the instance of the chart from this reference.
3833	Chart.instances = {};
3834
3835	// Controllers available for dataset visualization eg. bar, line, slice, etc.
3836	Chart.controllers = {};
3837
3838	/**
3839	 * Initializes the given config with global and chart default values.
3840	 */
3841	function initConfig(config) {
3842		config = config || {};
3843
3844		// Do NOT use configMerge() for the data object because this method merges arrays
3845		// and so would change references to labels and datasets, preventing data updates.
3846		var data = config.data = config.data || {};
3847		data.datasets = data.datasets || [];
3848		data.labels = data.labels || [];
3849
3850		config.options = helpers.configMerge(
3851			defaults.global,
3852			defaults[config.type],
3853			config.options || {});
3854
3855		return config;
3856	}
3857
3858	/**
3859	 * Updates the config of the chart
3860	 * @param chart {Chart} chart to update the options for
3861	 */
3862	function updateConfig(chart) {
3863		var newOptions = chart.options;
3864
3865		helpers.each(chart.scales, function(scale) {
3866			layouts.removeBox(chart, scale);
3867		});
3868
3869		newOptions = helpers.configMerge(
3870			Chart.defaults.global,
3871			Chart.defaults[chart.config.type],
3872			newOptions);
3873
3874		chart.options = chart.config.options = newOptions;
3875		chart.ensureScalesHaveIDs();
3876		chart.buildOrUpdateScales();
3877		// Tooltip
3878		chart.tooltip._options = newOptions.tooltips;
3879		chart.tooltip.initialize();
3880	}
3881
3882	function positionIsHorizontal(position) {
3883		return position === 'top' || position === 'bottom';
3884	}
3885
3886	helpers.extend(Chart.prototype, /** @lends Chart */ {
3887		/**
3888		 * @private
3889		 */
3890		construct: function(item, config) {
3891			var me = this;
3892
3893			config = initConfig(config);
3894
3895			var context = platform.acquireContext(item, config);
3896			var canvas = context && context.canvas;
3897			var height = canvas && canvas.height;
3898			var width = canvas && canvas.width;
3899
3900			me.id = helpers.uid();
3901			me.ctx = context;
3902			me.canvas = canvas;
3903			me.config = config;
3904			me.width = width;
3905			me.height = height;
3906			me.aspectRatio = height ? width / height : null;
3907			me.options = config.options;
3908			me._bufferedRender = false;
3909
3910			/**
3911			 * Provided for backward compatibility, Chart and Chart.Controller have been merged,
3912			 * the "instance" still need to be defined since it might be called from plugins.
3913			 * @prop Chart#chart
3914			 * @deprecated since version 2.6.0
3915			 * @todo remove at version 3
3916			 * @private
3917			 */
3918			me.chart = me;
3919			me.controller = me; // chart.chart.controller #inception
3920
3921			// Add the chart instance to the global namespace
3922			Chart.instances[me.id] = me;
3923
3924			// Define alias to the config data: `chart.data === chart.config.data`
3925			Object.defineProperty(me, 'data', {
3926				get: function() {
3927					return me.config.data;
3928				},
3929				set: function(value) {
3930					me.config.data = value;
3931				}
3932			});
3933
3934			if (!context || !canvas) {
3935				// The given item is not a compatible context2d element, let's return before finalizing
3936				// the chart initialization but after setting basic chart / controller properties that
3937				// can help to figure out that the chart is not valid (e.g chart.canvas !== null);
3938				// https://github.com/chartjs/Chart.js/issues/2807
3939				console.error("Failed to create chart: can't acquire context from the given item");
3940				return;
3941			}
3942
3943			me.initialize();
3944			me.update();
3945		},
3946
3947		/**
3948		 * @private
3949		 */
3950		initialize: function() {
3951			var me = this;
3952
3953			// Before init plugin notification
3954			plugins.notify(me, 'beforeInit');
3955
3956			helpers.retinaScale(me, me.options.devicePixelRatio);
3957
3958			me.bindEvents();
3959
3960			if (me.options.responsive) {
3961				// Initial resize before chart draws (must be silent to preserve initial animations).
3962				me.resize(true);
3963			}
3964
3965			// Make sure scales have IDs and are built before we build any controllers.
3966			me.ensureScalesHaveIDs();
3967			me.buildOrUpdateScales();
3968			me.initToolTip();
3969
3970			// After init plugin notification
3971			plugins.notify(me, 'afterInit');
3972
3973			return me;
3974		},
3975
3976		clear: function() {
3977			helpers.canvas.clear(this);
3978			return this;
3979		},
3980
3981		stop: function() {
3982			// Stops any current animation loop occurring
3983			Chart.animationService.cancelAnimation(this);
3984			return this;
3985		},
3986
3987		resize: function(silent) {
3988			var me = this;
3989			var options = me.options;
3990			var canvas = me.canvas;
3991			var aspectRatio = (options.maintainAspectRatio && me.aspectRatio) || null;
3992
3993			// the canvas render width and height will be casted to integers so make sure that
3994			// the canvas display style uses the same integer values to avoid blurring effect.
3995
3996			// Set to 0 instead of canvas.size because the size defaults to 300x150 if the element is collased
3997			var newWidth = Math.max(0, Math.floor(helpers.getMaximumWidth(canvas)));
3998			var newHeight = Math.max(0, Math.floor(aspectRatio ? newWidth / aspectRatio : helpers.getMaximumHeight(canvas)));
3999
4000			if (me.width === newWidth && me.height === newHeight) {
4001				return;
4002			}
4003
4004			canvas.width = me.width = newWidth;
4005			canvas.height = me.height = newHeight;
4006			canvas.style.width = newWidth + 'px';
4007			canvas.style.height = newHeight + 'px';
4008
4009			helpers.retinaScale(me, options.devicePixelRatio);
4010
4011			if (!silent) {
4012				// Notify any plugins about the resize
4013				var newSize = {width: newWidth, height: newHeight};
4014				plugins.notify(me, 'resize', [newSize]);
4015
4016				// Notify of resize
4017				if (me.options.onResize) {
4018					me.options.onResize(me, newSize);
4019				}
4020
4021				me.stop();
4022				me.update(me.options.responsiveAnimationDuration);
4023			}
4024		},
4025
4026		ensureScalesHaveIDs: function() {
4027			var options = this.options;
4028			var scalesOptions = options.scales || {};
4029			var scaleOptions = options.scale;
4030
4031			helpers.each(scalesOptions.xAxes, function(xAxisOptions, index) {
4032				xAxisOptions.id = xAxisOptions.id || ('x-axis-' + index);
4033			});
4034
4035			helpers.each(scalesOptions.yAxes, function(yAxisOptions, index) {
4036				yAxisOptions.id = yAxisOptions.id || ('y-axis-' + index);
4037			});
4038
4039			if (scaleOptions) {
4040				scaleOptions.id = scaleOptions.id || 'scale';
4041			}
4042		},
4043
4044		/**
4045		 * Builds a map of scale ID to scale object for future lookup.
4046		 */
4047		buildOrUpdateScales: function() {
4048			var me = this;
4049			var options = me.options;
4050			var scales = me.scales || {};
4051			var items = [];
4052			var updated = Object.keys(scales).reduce(function(obj, id) {
4053				obj[id] = false;
4054				return obj;
4055			}, {});
4056
4057			if (options.scales) {
4058				items = items.concat(
4059					(options.scales.xAxes || []).map(function(xAxisOptions) {
4060						return {options: xAxisOptions, dtype: 'category', dposition: 'bottom'};
4061					}),
4062					(options.scales.yAxes || []).map(function(yAxisOptions) {
4063						return {options: yAxisOptions, dtype: 'linear', dposition: 'left'};
4064					})
4065				);
4066			}
4067
4068			if (options.scale) {
4069				items.push({
4070					options: options.scale,
4071					dtype: 'radialLinear',
4072					isDefault: true,
4073					dposition: 'chartArea'
4074				});
4075			}
4076
4077			helpers.each(items, function(item) {
4078				var scaleOptions = item.options;
4079				var id = scaleOptions.id;
4080				var scaleType = helpers.valueOrDefault(scaleOptions.type, item.dtype);
4081
4082				if (positionIsHorizontal(scaleOptions.position) !== positionIsHorizontal(item.dposition)) {
4083					scaleOptions.position = item.dposition;
4084				}
4085
4086				updated[id] = true;
4087				var scale = null;
4088				if (id in scales && scales[id].type === scaleType) {
4089					scale = scales[id];
4090					scale.options = scaleOptions;
4091					scale.ctx = me.ctx;
4092					scale.chart = me;
4093				} else {
4094					var scaleClass = Chart.scaleService.getScaleConstructor(scaleType);
4095					if (!scaleClass) {
4096						return;
4097					}
4098					scale = new scaleClass({
4099						id: id,
4100						type: scaleType,
4101						options: scaleOptions,
4102						ctx: me.ctx,
4103						chart: me
4104					});
4105					scales[scale.id] = scale;
4106				}
4107
4108				scale.mergeTicksOptions();
4109
4110				// TODO(SB): I think we should be able to remove this custom case (options.scale)
4111				// and consider it as a regular scale part of the "scales"" map only! This would
4112				// make the logic easier and remove some useless? custom code.
4113				if (item.isDefault) {
4114					me.scale = scale;
4115				}
4116			});
4117			// clear up discarded scales
4118			helpers.each(updated, function(hasUpdated, id) {
4119				if (!hasUpdated) {
4120					delete scales[id];
4121				}
4122			});
4123
4124			me.scales = scales;
4125
4126			Chart.scaleService.addScalesToLayout(this);
4127		},
4128
4129		buildOrUpdateControllers: function() {
4130			var me = this;
4131			var types = [];
4132			var newControllers = [];
4133
4134			helpers.each(me.data.datasets, function(dataset, datasetIndex) {
4135				var meta = me.getDatasetMeta(datasetIndex);
4136				var type = dataset.type || me.config.type;
4137
4138				if (meta.type && meta.type !== type) {
4139					me.destroyDatasetMeta(datasetIndex);
4140					meta = me.getDatasetMeta(datasetIndex);
4141				}
4142				meta.type = type;
4143
4144				types.push(meta.type);
4145
4146				if (meta.controller) {
4147					meta.controller.updateIndex(datasetIndex);
4148					meta.controller.linkScales();
4149				} else {
4150					var ControllerClass = Chart.controllers[meta.type];
4151					if (ControllerClass === undefined) {
4152						throw new Error('"' + meta.type + '" is not a chart type.');
4153					}
4154
4155					meta.controller = new ControllerClass(me, datasetIndex);
4156					newControllers.push(meta.controller);
4157				}
4158			}, me);
4159
4160			return newControllers;
4161		},
4162
4163		/**
4164		 * Reset the elements of all datasets
4165		 * @private
4166		 */
4167		resetElements: function() {
4168			var me = this;
4169			helpers.each(me.data.datasets, function(dataset, datasetIndex) {
4170				me.getDatasetMeta(datasetIndex).controller.reset();
4171			}, me);
4172		},
4173
4174		/**
4175		* Resets the chart back to it's state before the initial animation
4176		*/
4177		reset: function() {
4178			this.resetElements();
4179			this.tooltip.initialize();
4180		},
4181
4182		update: function(config) {
4183			var me = this;
4184
4185			if (!config || typeof config !== 'object') {
4186				// backwards compatibility
4187				config = {
4188					duration: config,
4189					lazy: arguments[1]
4190				};
4191			}
4192
4193			updateConfig(me);
4194
4195			// plugins options references might have change, let's invalidate the cache
4196			// https://github.com/chartjs/Chart.js/issues/5111#issuecomment-355934167
4197			plugins._invalidate(me);
4198
4199			if (plugins.notify(me, 'beforeUpdate') === false) {
4200				return;
4201			}
4202
4203			// In case the entire data object changed
4204			me.tooltip._data = me.data;
4205
4206			// Make sure dataset controllers are updated and new controllers are reset
4207			var newControllers = me.buildOrUpdateControllers();
4208
4209			// Make sure all dataset controllers have correct meta data counts
4210			helpers.each(me.data.datasets, function(dataset, datasetIndex) {
4211				me.getDatasetMeta(datasetIndex).controller.buildOrUpdateElements();
4212			}, me);
4213
4214			me.updateLayout();
4215
4216			// Can only reset the new controllers after the scales have been updated
4217			if (me.options.animation && me.options.animation.duration) {
4218				helpers.each(newControllers, function(controller) {
4219					controller.reset();
4220				});
4221			}
4222
4223			me.updateDatasets();
4224
4225			// Need to reset tooltip in case it is displayed with elements that are removed
4226			// after update.
4227			me.tooltip.initialize();
4228
4229			// Last active contains items that were previously in the tooltip.
4230			// When we reset the tooltip, we need to clear it
4231			me.lastActive = [];
4232
4233			// Do this before render so that any plugins that need final scale updates can use it
4234			plugins.notify(me, 'afterUpdate');
4235
4236			if (me._bufferedRender) {
4237				me._bufferedRequest = {
4238					duration: config.duration,
4239					easing: config.easing,
4240					lazy: config.lazy
4241				};
4242			} else {
4243				me.render(config);
4244			}
4245		},
4246
4247		/**
4248		 * Updates the chart layout unless a plugin returns `false` to the `beforeLayout`
4249		 * hook, in which case, plugins will not be called on `afterLayout`.
4250		 * @private
4251		 */
4252		updateLayout: function() {
4253			var me = this;
4254
4255			if (plugins.notify(me, 'beforeLayout') === false) {
4256				return;
4257			}
4258
4259			layouts.update(this, this.width, this.height);
4260
4261			/**
4262			 * Provided for backward compatibility, use `afterLayout` instead.
4263			 * @method IPlugin#afterScaleUpdate
4264			 * @deprecated since version 2.5.0
4265			 * @todo remove at version 3
4266			 * @private
4267			 */
4268			plugins.notify(me, 'afterScaleUpdate');
4269			plugins.notify(me, 'afterLayout');
4270		},
4271
4272		/**
4273		 * Updates all datasets unless a plugin returns `false` to the `beforeDatasetsUpdate`
4274		 * hook, in which case, plugins will not be called on `afterDatasetsUpdate`.
4275		 * @private
4276		 */
4277		updateDatasets: function() {
4278			var me = this;
4279
4280			if (plugins.notify(me, 'beforeDatasetsUpdate') === false) {
4281				return;
4282			}
4283
4284			for (var i = 0, ilen = me.data.datasets.length; i < ilen; ++i) {
4285				me.updateDataset(i);
4286			}
4287
4288			plugins.notify(me, 'afterDatasetsUpdate');
4289		},
4290
4291		/**
4292		 * Updates dataset at index unless a plugin returns `false` to the `beforeDatasetUpdate`
4293		 * hook, in which case, plugins will not be called on `afterDatasetUpdate`.
4294		 * @private
4295		 */
4296		updateDataset: function(index) {
4297			var me = this;
4298			var meta = me.getDatasetMeta(index);
4299			var args = {
4300				meta: meta,
4301				index: index
4302			};
4303
4304			if (plugins.notify(me, 'beforeDatasetUpdate', [args]) === false) {
4305				return;
4306			}
4307
4308			meta.controller.update();
4309
4310			plugins.notify(me, 'afterDatasetUpdate', [args]);
4311		},
4312
4313		render: function(config) {
4314			var me = this;
4315
4316			if (!config || typeof config !== 'object') {
4317				// backwards compatibility
4318				config = {
4319					duration: config,
4320					lazy: arguments[1]
4321				};
4322			}
4323
4324			var duration = config.duration;
4325			var lazy = config.lazy;
4326
4327			if (plugins.notify(me, 'beforeRender') === false) {
4328				return;
4329			}
4330
4331			var animationOptions = me.options.animation;
4332			var onComplete = function(animation) {
4333				plugins.notify(me, 'afterRender');
4334				helpers.callback(animationOptions && animationOptions.onComplete, [animation], me);
4335			};
4336
4337			if (animationOptions && ((typeof duration !== 'undefined' && duration !== 0) || (typeof duration === 'undefined' && animationOptions.duration !== 0))) {
4338				var animation = new Chart.Animation({
4339					numSteps: (duration || animationOptions.duration) / 16.66, // 60 fps
4340					easing: config.easing || animationOptions.easing,
4341
4342					render: function(chart, animationObject) {
4343						var easingFunction = helpers.easing.effects[animationObject.easing];
4344						var currentStep = animationObject.currentStep;
4345						var stepDecimal = currentStep / animationObject.numSteps;
4346
4347						chart.draw(easingFunction(stepDecimal), stepDecimal, currentStep);
4348					},
4349
4350					onAnimationProgress: animationOptions.onProgress,
4351					onAnimationComplete: onComplete
4352				});
4353
4354				Chart.animationService.addAnimation(me, animation, duration, lazy);
4355			} else {
4356				me.draw();
4357
4358				// See https://github.com/chartjs/Chart.js/issues/3781
4359				onComplete(new Chart.Animation({numSteps: 0, chart: me}));
4360			}
4361
4362			return me;
4363		},
4364
4365		draw: function(easingValue) {
4366			var me = this;
4367
4368			me.clear();
4369
4370			if (helpers.isNullOrUndef(easingValue)) {
4371				easingValue = 1;
4372			}
4373
4374			me.transition(easingValue);
4375
4376			if (plugins.notify(me, 'beforeDraw', [easingValue]) === false) {
4377				return;
4378			}
4379
4380			// Draw all the scales
4381			helpers.each(me.boxes, function(box) {
4382				box.draw(me.chartArea);
4383			}, me);
4384
4385			if (me.scale) {
4386				me.scale.draw();
4387			}
4388
4389			me.drawDatasets(easingValue);
4390			me._drawTooltip(easingValue);
4391
4392			plugins.notify(me, 'afterDraw', [easingValue]);
4393		},
4394
4395		/**
4396		 * @private
4397		 */
4398		transition: function(easingValue) {
4399			var me = this;
4400
4401			for (var i = 0, ilen = (me.data.datasets || []).length; i < ilen; ++i) {
4402				if (me.isDatasetVisible(i)) {
4403					me.getDatasetMeta(i).controller.transition(easingValue);
4404				}
4405			}
4406
4407			me.tooltip.transition(easingValue);
4408		},
4409
4410		/**
4411		 * Draws all datasets unless a plugin returns `false` to the `beforeDatasetsDraw`
4412		 * hook, in which case, plugins will not be called on `afterDatasetsDraw`.
4413		 * @private
4414		 */
4415		drawDatasets: function(easingValue) {
4416			var me = this;
4417
4418			if (plugins.notify(me, 'beforeDatasetsDraw', [easingValue]) === false) {
4419				return;
4420			}
4421
4422			// Draw datasets reversed to support proper line stacking
4423			for (var i = (me.data.datasets || []).length - 1; i >= 0; --i) {
4424				if (me.isDatasetVisible(i)) {
4425					me.drawDataset(i, easingValue);
4426				}
4427			}
4428
4429			plugins.notify(me, 'afterDatasetsDraw', [easingValue]);
4430		},
4431
4432		/**
4433		 * Draws dataset at index unless a plugin returns `false` to the `beforeDatasetDraw`
4434		 * hook, in which case, plugins will not be called on `afterDatasetDraw`.
4435		 * @private
4436		 */
4437		drawDataset: function(index, easingValue) {
4438			var me = this;
4439			var meta = me.getDatasetMeta(index);
4440			var args = {
4441				meta: meta,
4442				index: index,
4443				easingValue: easingValue
4444			};
4445
4446			if (plugins.notify(me, 'beforeDatasetDraw', [args]) === false) {
4447				return;
4448			}
4449
4450			meta.controller.draw(easingValue);
4451
4452			plugins.notify(me, 'afterDatasetDraw', [args]);
4453		},
4454
4455		/**
4456		 * Draws tooltip unless a plugin returns `false` to the `beforeTooltipDraw`
4457		 * hook, in which case, plugins will not be called on `afterTooltipDraw`.
4458		 * @private
4459		 */
4460		_drawTooltip: function(easingValue) {
4461			var me = this;
4462			var tooltip = me.tooltip;
4463			var args = {
4464				tooltip: tooltip,
4465				easingValue: easingValue
4466			};
4467
4468			if (plugins.notify(me, 'beforeTooltipDraw', [args]) === false) {
4469				return;
4470			}
4471
4472			tooltip.draw();
4473
4474			plugins.notify(me, 'afterTooltipDraw', [args]);
4475		},
4476
4477		// Get the single element that was clicked on
4478		// @return : An object containing the dataset index and element index of the matching element. Also contains the rectangle that was draw
4479		getElementAtEvent: function(e) {
4480			return Interaction.modes.single(this, e);
4481		},
4482
4483		getElementsAtEvent: function(e) {
4484			return Interaction.modes.label(this, e, {intersect: true});
4485		},
4486
4487		getElementsAtXAxis: function(e) {
4488			return Interaction.modes['x-axis'](this, e, {intersect: true});
4489		},
4490
4491		getElementsAtEventForMode: function(e, mode, options) {
4492			var method = Interaction.modes[mode];
4493			if (typeof method === 'function') {
4494				return method(this, e, options);
4495			}
4496
4497			return [];
4498		},
4499
4500		getDatasetAtEvent: function(e) {
4501			return Interaction.modes.dataset(this, e, {intersect: true});
4502		},
4503
4504		getDatasetMeta: function(datasetIndex) {
4505			var me = this;
4506			var dataset = me.data.datasets[datasetIndex];
4507			if (!dataset._meta) {
4508				dataset._meta = {};
4509			}
4510
4511			var meta = dataset._meta[me.id];
4512			if (!meta) {
4513				meta = dataset._meta[me.id] = {
4514					type: null,
4515					data: [],
4516					dataset: null,
4517					controller: null,
4518					hidden: null,			// See isDatasetVisible() comment
4519					xAxisID: null,
4520					yAxisID: null
4521				};
4522			}
4523
4524			return meta;
4525		},
4526
4527		getVisibleDatasetCount: function() {
4528			var count = 0;
4529			for (var i = 0, ilen = this.data.datasets.length; i < ilen; ++i) {
4530				if (this.isDatasetVisible(i)) {
4531					count++;
4532				}
4533			}
4534			return count;
4535		},
4536
4537		isDatasetVisible: function(datasetIndex) {
4538			var meta = this.getDatasetMeta(datasetIndex);
4539
4540			// meta.hidden is a per chart dataset hidden flag override with 3 states: if true or false,
4541			// the dataset.hidden value is ignored, else if null, the dataset hidden state is returned.
4542			return typeof meta.hidden === 'boolean' ? !meta.hidden : !this.data.datasets[datasetIndex].hidden;
4543		},
4544
4545		generateLegend: function() {
4546			return this.options.legendCallback(this);
4547		},
4548
4549		/**
4550		 * @private
4551		 */
4552		destroyDatasetMeta: function(datasetIndex) {
4553			var id = this.id;
4554			var dataset = this.data.datasets[datasetIndex];
4555			var meta = dataset._meta && dataset._meta[id];
4556
4557			if (meta) {
4558				meta.controller.destroy();
4559				delete dataset._meta[id];
4560			}
4561		},
4562
4563		destroy: function() {
4564			var me = this;
4565			var canvas = me.canvas;
4566			var i, ilen;
4567
4568			me.stop();
4569
4570			// dataset controllers need to cleanup associated data
4571			for (i = 0, ilen = me.data.datasets.length; i < ilen; ++i) {
4572				me.destroyDatasetMeta(i);
4573			}
4574
4575			if (canvas) {
4576				me.unbindEvents();
4577				helpers.canvas.clear(me);
4578				platform.releaseContext(me.ctx);
4579				me.canvas = null;
4580				me.ctx = null;
4581			}
4582
4583			plugins.notify(me, 'destroy');
4584
4585			delete Chart.instances[me.id];
4586		},
4587
4588		toBase64Image: function() {
4589			return this.canvas.toDataURL.apply(this.canvas, arguments);
4590		},
4591
4592		initToolTip: function() {
4593			var me = this;
4594			me.tooltip = new Chart.Tooltip({
4595				_chart: me,
4596				_chartInstance: me, // deprecated, backward compatibility
4597				_data: me.data,
4598				_options: me.options.tooltips
4599			}, me);
4600		},
4601
4602		/**
4603		 * @private
4604		 */
4605		bindEvents: function() {
4606			var me = this;
4607			var listeners = me._listeners = {};
4608			var listener = function() {
4609				me.eventHandler.apply(me, arguments);
4610			};
4611
4612			helpers.each(me.options.events, function(type) {
4613				platform.addEventListener(me, type, listener);
4614				listeners[type] = listener;
4615			});
4616
4617			// Elements used to detect size change should not be injected for non responsive charts.
4618			// See https://github.com/chartjs/Chart.js/issues/2210
4619			if (me.options.responsive) {
4620				listener = function() {
4621					me.resize();
4622				};
4623
4624				platform.addEventListener(me, 'resize', listener);
4625				listeners.resize = listener;
4626			}
4627		},
4628
4629		/**
4630		 * @private
4631		 */
4632		unbindEvents: function() {
4633			var me = this;
4634			var listeners = me._listeners;
4635			if (!listeners) {
4636				return;
4637			}
4638
4639			delete me._listeners;
4640			helpers.each(listeners, function(listener, type) {
4641				platform.removeEventListener(me, type, listener);
4642			});
4643		},
4644
4645		updateHoverStyle: function(elements, mode, enabled) {
4646			var method = enabled ? 'setHoverStyle' : 'removeHoverStyle';
4647			var element, i, ilen;
4648
4649			for (i = 0, ilen = elements.length; i < ilen; ++i) {
4650				element = elements[i];
4651				if (element) {
4652					this.getDatasetMeta(element._datasetIndex).controller[method](element);
4653				}
4654			}
4655		},
4656
4657		/**
4658		 * @private
4659		 */
4660		eventHandler: function(e) {
4661			var me = this;
4662			var tooltip = me.tooltip;
4663
4664			if (plugins.notify(me, 'beforeEvent', [e]) === false) {
4665				return;
4666			}
4667
4668			// Buffer any update calls so that renders do not occur
4669			me._bufferedRender = true;
4670			me._bufferedRequest = null;
4671
4672			var changed = me.handleEvent(e);
4673			// for smooth tooltip animations issue #4989
4674			// the tooltip should be the source of change
4675			// Animation check workaround:
4676			// tooltip._start will be null when tooltip isn't animating
4677			if (tooltip) {
4678				changed = tooltip._start
4679					? tooltip.handleEvent(e)
4680					: changed | tooltip.handleEvent(e);
4681			}
4682
4683			plugins.notify(me, 'afterEvent', [e]);
4684
4685			var bufferedRequest = me._bufferedRequest;
4686			if (bufferedRequest) {
4687				// If we have an update that was triggered, we need to do a normal render
4688				me.render(bufferedRequest);
4689			} else if (changed && !me.animating) {
4690				// If entering, leaving, or changing elements, animate the change via pivot
4691				me.stop();
4692
4693				// We only need to render at this point. Updating will cause scales to be
4694				// recomputed generating flicker & using more memory than necessary.
4695				me.render(me.options.hover.animationDuration, true);
4696			}
4697
4698			me._bufferedRender = false;
4699			me._bufferedRequest = null;
4700
4701			return me;
4702		},
4703
4704		/**
4705		 * Handle an event
4706		 * @private
4707		 * @param {IEvent} event the event to handle
4708		 * @return {Boolean} true if the chart needs to re-render
4709		 */
4710		handleEvent: function(e) {
4711			var me = this;
4712			var options = me.options || {};
4713			var hoverOptions = options.hover;
4714			var changed = false;
4715
4716			me.lastActive = me.lastActive || [];
4717
4718			// Find Active Elements for hover and tooltips
4719			if (e.type === 'mouseout') {
4720				me.active = [];
4721			} else {
4722				me.active = me.getElementsAtEventForMode(e, hoverOptions.mode, hoverOptions);
4723			}
4724
4725			// Invoke onHover hook
4726			// Need to call with native event here to not break backwards compatibility
4727			helpers.callback(options.onHover || options.hover.onHover, [e.native, me.active], me);
4728
4729			if (e.type === 'mouseup' || e.type === 'click') {
4730				if (options.onClick) {
4731					// Use e.native here for backwards compatibility
4732					options.onClick.call(me, e.native, me.active);
4733				}
4734			}
4735
4736			// Remove styling for last active (even if it may still be active)
4737			if (me.lastActive.length) {
4738				me.updateHoverStyle(me.lastActive, hoverOptions.mode, false);
4739			}
4740
4741			// Built in hover styling
4742			if (me.active.length && hoverOptions.mode) {
4743				me.updateHoverStyle(me.active, hoverOptions.mode, true);
4744			}
4745
4746			changed = !helpers.arrayEquals(me.active, me.lastActive);
4747
4748			// Remember Last Actives
4749			me.lastActive = me.active;
4750
4751			return changed;
4752		}
4753	});
4754
4755	/**
4756	 * Provided for backward compatibility, use Chart instead.
4757	 * @class Chart.Controller
4758	 * @deprecated since version 2.6.0
4759	 * @todo remove at version 3
4760	 * @private
4761	 */
4762	Chart.Controller = Chart;
4763};
4764
4765},{"25":25,"28":28,"30":30,"31":31,"45":45,"48":48}],24:[function(require,module,exports){
4766'use strict';
4767
4768var helpers = require(45);
4769
4770module.exports = function(Chart) {
4771
4772	var arrayEvents = ['push', 'pop', 'shift', 'splice', 'unshift'];
4773
4774	/**
4775	 * Hooks the array methods that add or remove values ('push', pop', 'shift', 'splice',
4776	 * 'unshift') and notify the listener AFTER the array has been altered. Listeners are
4777	 * called on the 'onData*' callbacks (e.g. onDataPush, etc.) with same arguments.
4778	 */
4779	function listenArrayEvents(array, listener) {
4780		if (array._chartjs) {
4781			array._chartjs.listeners.push(listener);
4782			return;
4783		}
4784
4785		Object.defineProperty(array, '_chartjs', {
4786			configurable: true,
4787			enumerable: false,
4788			value: {
4789				listeners: [listener]
4790			}
4791		});
4792
4793		arrayEvents.forEach(function(key) {
4794			var method = 'onData' + key.charAt(0).toUpperCase() + key.slice(1);
4795			var base = array[key];
4796
4797			Object.defineProperty(array, key, {
4798				configurable: true,
4799				enumerable: false,
4800				value: function() {
4801					var args = Array.prototype.slice.call(arguments);
4802					var res = base.apply(this, args);
4803
4804					helpers.each(array._chartjs.listeners, function(object) {
4805						if (typeof object[method] === 'function') {
4806							object[method].apply(object, args);
4807						}
4808					});
4809
4810					return res;
4811				}
4812			});
4813		});
4814	}
4815
4816	/**
4817	 * Removes the given array event listener and cleanup extra attached properties (such as
4818	 * the _chartjs stub and overridden methods) if array doesn't have any more listeners.
4819	 */
4820	function unlistenArrayEvents(array, listener) {
4821		var stub = array._chartjs;
4822		if (!stub) {
4823			return;
4824		}
4825
4826		var listeners = stub.listeners;
4827		var index = listeners.indexOf(listener);
4828		if (index !== -1) {
4829			listeners.splice(index, 1);
4830		}
4831
4832		if (listeners.length > 0) {
4833			return;
4834		}
4835
4836		arrayEvents.forEach(function(key) {
4837			delete array[key];
4838		});
4839
4840		delete array._chartjs;
4841	}
4842
4843	// Base class for all dataset controllers (line, bar, etc)
4844	Chart.DatasetController = function(chart, datasetIndex) {
4845		this.initialize(chart, datasetIndex);
4846	};
4847
4848	helpers.extend(Chart.DatasetController.prototype, {
4849
4850		/**
4851		 * Element type used to generate a meta dataset (e.g. Chart.element.Line).
4852		 * @type {Chart.core.element}
4853		 */
4854		datasetElementType: null,
4855
4856		/**
4857		 * Element type used to generate a meta data (e.g. Chart.element.Point).
4858		 * @type {Chart.core.element}
4859		 */
4860		dataElementType: null,
4861
4862		initialize: function(chart, datasetIndex) {
4863			var me = this;
4864			me.chart = chart;
4865			me.index = datasetIndex;
4866			me.linkScales();
4867			me.addElements();
4868		},
4869
4870		updateIndex: function(datasetIndex) {
4871			this.index = datasetIndex;
4872		},
4873
4874		linkScales: function() {
4875			var me = this;
4876			var meta = me.getMeta();
4877			var dataset = me.getDataset();
4878
4879			if (meta.xAxisID === null || !(meta.xAxisID in me.chart.scales)) {
4880				meta.xAxisID = dataset.xAxisID || me.chart.options.scales.xAxes[0].id;
4881			}
4882			if (meta.yAxisID === null || !(meta.yAxisID in me.chart.scales)) {
4883				meta.yAxisID = dataset.yAxisID || me.chart.options.scales.yAxes[0].id;
4884			}
4885		},
4886
4887		getDataset: function() {
4888			return this.chart.data.datasets[this.index];
4889		},
4890
4891		getMeta: function() {
4892			return this.chart.getDatasetMeta(this.index);
4893		},
4894
4895		getScaleForId: function(scaleID) {
4896			return this.chart.scales[scaleID];
4897		},
4898
4899		reset: function() {
4900			this.update(true);
4901		},
4902
4903		/**
4904		 * @private
4905		 */
4906		destroy: function() {
4907			if (this._data) {
4908				unlistenArrayEvents(this._data, this);
4909			}
4910		},
4911
4912		createMetaDataset: function() {
4913			var me = this;
4914			var type = me.datasetElementType;
4915			return type && new type({
4916				_chart: me.chart,
4917				_datasetIndex: me.index
4918			});
4919		},
4920
4921		createMetaData: function(index) {
4922			var me = this;
4923			var type = me.dataElementType;
4924			return type && new type({
4925				_chart: me.chart,
4926				_datasetIndex: me.index,
4927				_index: index
4928			});
4929		},
4930
4931		addElements: function() {
4932			var me = this;
4933			var meta = me.getMeta();
4934			var data = me.getDataset().data || [];
4935			var metaData = meta.data;
4936			var i, ilen;
4937
4938			for (i = 0, ilen = data.length; i < ilen; ++i) {
4939				metaData[i] = metaData[i] || me.createMetaData(i);
4940			}
4941
4942			meta.dataset = meta.dataset || me.createMetaDataset();
4943		},
4944
4945		addElementAndReset: function(index) {
4946			var element = this.createMetaData(index);
4947			this.getMeta().data.splice(index, 0, element);
4948			this.updateElement(element, index, true);
4949		},
4950
4951		buildOrUpdateElements: function() {
4952			var me = this;
4953			var dataset = me.getDataset();
4954			var data = dataset.data || (dataset.data = []);
4955
4956			// In order to correctly handle data addition/deletion animation (an thus simulate
4957			// real-time charts), we need to monitor these data modifications and synchronize
4958			// the internal meta data accordingly.
4959			if (me._data !== data) {
4960				if (me._data) {
4961					// This case happens when the user replaced the data array instance.
4962					unlistenArrayEvents(me._data, me);
4963				}
4964
4965				listenArrayEvents(data, me);
4966				me._data = data;
4967			}
4968
4969			// Re-sync meta data in case the user replaced the data array or if we missed
4970			// any updates and so make sure that we handle number of datapoints changing.
4971			me.resyncElements();
4972		},
4973
4974		update: helpers.noop,
4975
4976		transition: function(easingValue) {
4977			var meta = this.getMeta();
4978			var elements = meta.data || [];
4979			var ilen = elements.length;
4980			var i = 0;
4981
4982			for (; i < ilen; ++i) {
4983				elements[i].transition(easingValue);
4984			}
4985
4986			if (meta.dataset) {
4987				meta.dataset.transition(easingValue);
4988			}
4989		},
4990
4991		draw: function() {
4992			var meta = this.getMeta();
4993			var elements = meta.data || [];
4994			var ilen = elements.length;
4995			var i = 0;
4996
4997			if (meta.dataset) {
4998				meta.dataset.draw();
4999			}
5000
5001			for (; i < ilen; ++i) {
5002				elements[i].draw();
5003			}
5004		},
5005
5006		removeHoverStyle: function(element, elementOpts) {
5007			var dataset = this.chart.data.datasets[element._datasetIndex];
5008			var index = element._index;
5009			var custom = element.custom || {};
5010			var valueOrDefault = helpers.valueAtIndexOrDefault;
5011			var model = element._model;
5012
5013			model.backgroundColor = custom.backgroundColor ? custom.backgroundColor : valueOrDefault(dataset.backgroundColor, index, elementOpts.backgroundColor);
5014			model.borderColor = custom.borderColor ? custom.borderColor : valueOrDefault(dataset.borderColor, index, elementOpts.borderColor);
5015			model.borderWidth = custom.borderWidth ? custom.borderWidth : valueOrDefault(dataset.borderWidth, index, elementOpts.borderWidth);
5016		},
5017
5018		setHoverStyle: function(element) {
5019			var dataset = this.chart.data.datasets[element._datasetIndex];
5020			var index = element._index;
5021			var custom = element.custom || {};
5022			var valueOrDefault = helpers.valueAtIndexOrDefault;
5023			var getHoverColor = helpers.getHoverColor;
5024			var model = element._model;
5025
5026			model.backgroundColor = custom.hoverBackgroundColor ? custom.hoverBackgroundColor : valueOrDefault(dataset.hoverBackgroundColor, index, getHoverColor(model.backgroundColor));
5027			model.borderColor = custom.hoverBorderColor ? custom.hoverBorderColor : valueOrDefault(dataset.hoverBorderColor, index, getHoverColor(model.borderColor));
5028			model.borderWidth = custom.hoverBorderWidth ? custom.hoverBorderWidth : valueOrDefault(dataset.hoverBorderWidth, index, model.borderWidth);
5029		},
5030
5031		/**
5032		 * @private
5033		 */
5034		resyncElements: function() {
5035			var me = this;
5036			var meta = me.getMeta();
5037			var data = me.getDataset().data;
5038			var numMeta = meta.data.length;
5039			var numData = data.length;
5040
5041			if (numData < numMeta) {
5042				meta.data.splice(numData, numMeta - numData);
5043			} else if (numData > numMeta) {
5044				me.insertElements(numMeta, numData - numMeta);
5045			}
5046		},
5047
5048		/**
5049		 * @private
5050		 */
5051		insertElements: function(start, count) {
5052			for (var i = 0; i < count; ++i) {
5053				this.addElementAndReset(start + i);
5054			}
5055		},
5056
5057		/**
5058		 * @private
5059		 */
5060		onDataPush: function() {
5061			this.insertElements(this.getDataset().data.length - 1, arguments.length);
5062		},
5063
5064		/**
5065		 * @private
5066		 */
5067		onDataPop: function() {
5068			this.getMeta().data.pop();
5069		},
5070
5071		/**
5072		 * @private
5073		 */
5074		onDataShift: function() {
5075			this.getMeta().data.shift();
5076		},
5077
5078		/**
5079		 * @private
5080		 */
5081		onDataSplice: function(start, count) {
5082			this.getMeta().data.splice(start, count);
5083			this.insertElements(start, arguments.length - 2);
5084		},
5085
5086		/**
5087		 * @private
5088		 */
5089		onDataUnshift: function() {
5090			this.insertElements(0, arguments.length);
5091		}
5092	});
5093
5094	Chart.DatasetController.extend = helpers.inherits;
5095};
5096
5097},{"45":45}],25:[function(require,module,exports){
5098'use strict';
5099
5100var helpers = require(45);
5101
5102module.exports = {
5103	/**
5104	 * @private
5105	 */
5106	_set: function(scope, values) {
5107		return helpers.merge(this[scope] || (this[scope] = {}), values);
5108	}
5109};
5110
5111},{"45":45}],26:[function(require,module,exports){
5112'use strict';
5113
5114var color = require(3);
5115var helpers = require(45);
5116
5117function interpolate(start, view, model, ease) {
5118	var keys = Object.keys(model);
5119	var i, ilen, key, actual, origin, target, type, c0, c1;
5120
5121	for (i = 0, ilen = keys.length; i < ilen; ++i) {
5122		key = keys[i];
5123
5124		target = model[key];
5125
5126		// if a value is added to the model after pivot() has been called, the view
5127		// doesn't contain it, so let's initialize the view to the target value.
5128		if (!view.hasOwnProperty(key)) {
5129			view[key] = target;
5130		}
5131
5132		actual = view[key];
5133
5134		if (actual === target || key[0] === '_') {
5135			continue;
5136		}
5137
5138		if (!start.hasOwnProperty(key)) {
5139			start[key] = actual;
5140		}
5141
5142		origin = start[key];
5143
5144		type = typeof target;
5145
5146		if (type === typeof origin) {
5147			if (type === 'string') {
5148				c0 = color(origin);
5149				if (c0.valid) {
5150					c1 = color(target);
5151					if (c1.valid) {
5152						view[key] = c1.mix(c0, ease).rgbString();
5153						continue;
5154					}
5155				}
5156			} else if (type === 'number' && isFinite(origin) && isFinite(target)) {
5157				view[key] = origin + (target - origin) * ease;
5158				continue;
5159			}
5160		}
5161
5162		view[key] = target;
5163	}
5164}
5165
5166var Element = function(configuration) {
5167	helpers.extend(this, configuration);
5168	this.initialize.apply(this, arguments);
5169};
5170
5171helpers.extend(Element.prototype, {
5172
5173	initialize: function() {
5174		this.hidden = false;
5175	},
5176
5177	pivot: function() {
5178		var me = this;
5179		if (!me._view) {
5180			me._view = helpers.clone(me._model);
5181		}
5182		me._start = {};
5183		return me;
5184	},
5185
5186	transition: function(ease) {
5187		var me = this;
5188		var model = me._model;
5189		var start = me._start;
5190		var view = me._view;
5191
5192		// No animation -> No Transition
5193		if (!model || ease === 1) {
5194			me._view = model;
5195			me._start = null;
5196			return me;
5197		}
5198
5199		if (!view) {
5200			view = me._view = {};
5201		}
5202
5203		if (!start) {
5204			start = me._start = {};
5205		}
5206
5207		interpolate(start, view, model, ease);
5208
5209		return me;
5210	},
5211
5212	tooltipPosition: function() {
5213		return {
5214			x: this._model.x,
5215			y: this._model.y
5216		};
5217	},
5218
5219	hasValue: function() {
5220		return helpers.isNumber(this._model.x) && helpers.isNumber(this._model.y);
5221	}
5222});
5223
5224Element.extend = helpers.inherits;
5225
5226module.exports = Element;
5227
5228},{"3":3,"45":45}],27:[function(require,module,exports){
5229/* global window: false */
5230/* global document: false */
5231'use strict';
5232
5233var color = require(3);
5234var defaults = require(25);
5235var helpers = require(45);
5236
5237module.exports = function(Chart) {
5238
5239	// -- Basic js utility methods
5240
5241	helpers.configMerge = function(/* objects ... */) {
5242		return helpers.merge(helpers.clone(arguments[0]), [].slice.call(arguments, 1), {
5243			merger: function(key, target, source, options) {
5244				var tval = target[key] || {};
5245				var sval = source[key];
5246
5247				if (key === 'scales') {
5248					// scale config merging is complex. Add our own function here for that
5249					target[key] = helpers.scaleMerge(tval, sval);
5250				} else if (key === 'scale') {
5251					// used in polar area & radar charts since there is only one scale
5252					target[key] = helpers.merge(tval, [Chart.scaleService.getScaleDefaults(sval.type), sval]);
5253				} else {
5254					helpers._merger(key, target, source, options);
5255				}
5256			}
5257		});
5258	};
5259
5260	helpers.scaleMerge = function(/* objects ... */) {
5261		return helpers.merge(helpers.clone(arguments[0]), [].slice.call(arguments, 1), {
5262			merger: function(key, target, source, options) {
5263				if (key === 'xAxes' || key === 'yAxes') {
5264					var slen = source[key].length;
5265					var i, type, scale;
5266
5267					if (!target[key]) {
5268						target[key] = [];
5269					}
5270
5271					for (i = 0; i < slen; ++i) {
5272						scale = source[key][i];
5273						type = helpers.valueOrDefault(scale.type, key === 'xAxes' ? 'category' : 'linear');
5274
5275						if (i >= target[key].length) {
5276							target[key].push({});
5277						}
5278
5279						if (!target[key][i].type || (scale.type && scale.type !== target[key][i].type)) {
5280							// new/untyped scale or type changed: let's apply the new defaults
5281							// then merge source scale to correctly overwrite the defaults.
5282							helpers.merge(target[key][i], [Chart.scaleService.getScaleDefaults(type), scale]);
5283						} else {
5284							// scales type are the same
5285							helpers.merge(target[key][i], scale);
5286						}
5287					}
5288				} else {
5289					helpers._merger(key, target, source, options);
5290				}
5291			}
5292		});
5293	};
5294
5295	helpers.where = function(collection, filterCallback) {
5296		if (helpers.isArray(collection) && Array.prototype.filter) {
5297			return collection.filter(filterCallback);
5298		}
5299		var filtered = [];
5300
5301		helpers.each(collection, function(item) {
5302			if (filterCallback(item)) {
5303				filtered.push(item);
5304			}
5305		});
5306
5307		return filtered;
5308	};
5309	helpers.findIndex = Array.prototype.findIndex ?
5310		function(array, callback, scope) {
5311			return array.findIndex(callback, scope);
5312		} :
5313		function(array, callback, scope) {
5314			scope = scope === undefined ? array : scope;
5315			for (var i = 0, ilen = array.length; i < ilen; ++i) {
5316				if (callback.call(scope, array[i], i, array)) {
5317					return i;
5318				}
5319			}
5320			return -1;
5321		};
5322	helpers.findNextWhere = function(arrayToSearch, filterCallback, startIndex) {
5323		// Default to start of the array
5324		if (helpers.isNullOrUndef(startIndex)) {
5325			startIndex = -1;
5326		}
5327		for (var i = startIndex + 1; i < arrayToSearch.length; i++) {
5328			var currentItem = arrayToSearch[i];
5329			if (filterCallback(currentItem)) {
5330				return currentItem;
5331			}
5332		}
5333	};
5334	helpers.findPreviousWhere = function(arrayToSearch, filterCallback, startIndex) {
5335		// Default to end of the array
5336		if (helpers.isNullOrUndef(startIndex)) {
5337			startIndex = arrayToSearch.length;
5338		}
5339		for (var i = startIndex - 1; i >= 0; i--) {
5340			var currentItem = arrayToSearch[i];
5341			if (filterCallback(currentItem)) {
5342				return currentItem;
5343			}
5344		}
5345	};
5346
5347	// -- Math methods
5348	helpers.isNumber = function(n) {
5349		return !isNaN(parseFloat(n)) && isFinite(n);
5350	};
5351	helpers.almostEquals = function(x, y, epsilon) {
5352		return Math.abs(x - y) < epsilon;
5353	};
5354	helpers.almostWhole = function(x, epsilon) {
5355		var rounded = Math.round(x);
5356		return (((rounded - epsilon) < x) && ((rounded + epsilon) > x));
5357	};
5358	helpers.max = function(array) {
5359		return array.reduce(function(max, value) {
5360			if (!isNaN(value)) {
5361				return Math.max(max, value);
5362			}
5363			return max;
5364		}, Number.NEGATIVE_INFINITY);
5365	};
5366	helpers.min = function(array) {
5367		return array.reduce(function(min, value) {
5368			if (!isNaN(value)) {
5369				return Math.min(min, value);
5370			}
5371			return min;
5372		}, Number.POSITIVE_INFINITY);
5373	};
5374	helpers.sign = Math.sign ?
5375		function(x) {
5376			return Math.sign(x);
5377		} :
5378		function(x) {
5379			x = +x; // convert to a number
5380			if (x === 0 || isNaN(x)) {
5381				return x;
5382			}
5383			return x > 0 ? 1 : -1;
5384		};
5385	helpers.log10 = Math.log10 ?
5386		function(x) {
5387			return Math.log10(x);
5388		} :
5389		function(x) {
5390			return Math.log(x) / Math.LN10;
5391		};
5392	helpers.toRadians = function(degrees) {
5393		return degrees * (Math.PI / 180);
5394	};
5395	helpers.toDegrees = function(radians) {
5396		return radians * (180 / Math.PI);
5397	};
5398	// Gets the angle from vertical upright to the point about a centre.
5399	helpers.getAngleFromPoint = function(centrePoint, anglePoint) {
5400		var distanceFromXCenter = anglePoint.x - centrePoint.x;
5401		var distanceFromYCenter = anglePoint.y - centrePoint.y;
5402		var radialDistanceFromCenter = Math.sqrt(distanceFromXCenter * distanceFromXCenter + distanceFromYCenter * distanceFromYCenter);
5403
5404		var angle = Math.atan2(distanceFromYCenter, distanceFromXCenter);
5405
5406		if (angle < (-0.5 * Math.PI)) {
5407			angle += 2.0 * Math.PI; // make sure the returned angle is in the range of (-PI/2, 3PI/2]
5408		}
5409
5410		return {
5411			angle: angle,
5412			distance: radialDistanceFromCenter
5413		};
5414	};
5415	helpers.distanceBetweenPoints = function(pt1, pt2) {
5416		return Math.sqrt(Math.pow(pt2.x - pt1.x, 2) + Math.pow(pt2.y - pt1.y, 2));
5417	};
5418	helpers.aliasPixel = function(pixelWidth) {
5419		return (pixelWidth % 2 === 0) ? 0 : 0.5;
5420	};
5421	helpers.splineCurve = function(firstPoint, middlePoint, afterPoint, t) {
5422		// Props to Rob Spencer at scaled innovation for his post on splining between points
5423		// http://scaledinnovation.com/analytics/splines/aboutSplines.html
5424
5425		// This function must also respect "skipped" points
5426
5427		var previous = firstPoint.skip ? middlePoint : firstPoint;
5428		var current = middlePoint;
5429		var next = afterPoint.skip ? middlePoint : afterPoint;
5430
5431		var d01 = Math.sqrt(Math.pow(current.x - previous.x, 2) + Math.pow(current.y - previous.y, 2));
5432		var d12 = Math.sqrt(Math.pow(next.x - current.x, 2) + Math.pow(next.y - current.y, 2));
5433
5434		var s01 = d01 / (d01 + d12);
5435		var s12 = d12 / (d01 + d12);
5436
5437		// If all points are the same, s01 & s02 will be inf
5438		s01 = isNaN(s01) ? 0 : s01;
5439		s12 = isNaN(s12) ? 0 : s12;
5440
5441		var fa = t * s01; // scaling factor for triangle Ta
5442		var fb = t * s12;
5443
5444		return {
5445			previous: {
5446				x: current.x - fa * (next.x - previous.x),
5447				y: current.y - fa * (next.y - previous.y)
5448			},
5449			next: {
5450				x: current.x + fb * (next.x - previous.x),
5451				y: current.y + fb * (next.y - previous.y)
5452			}
5453		};
5454	};
5455	helpers.EPSILON = Number.EPSILON || 1e-14;
5456	helpers.splineCurveMonotone = function(points) {
5457		// This function calculates Bézier control points in a similar way than |splineCurve|,
5458		// but preserves monotonicity of the provided data and ensures no local extremums are added
5459		// between the dataset discrete points due to the interpolation.
5460		// See : https://en.wikipedia.org/wiki/Monotone_cubic_interpolation
5461
5462		var pointsWithTangents = (points || []).map(function(point) {
5463			return {
5464				model: point._model,
5465				deltaK: 0,
5466				mK: 0
5467			};
5468		});
5469
5470		// Calculate slopes (deltaK) and initialize tangents (mK)
5471		var pointsLen = pointsWithTangents.length;
5472		var i, pointBefore, pointCurrent, pointAfter;
5473		for (i = 0; i < pointsLen; ++i) {
5474			pointCurrent = pointsWithTangents[i];
5475			if (pointCurrent.model.skip) {
5476				continue;
5477			}
5478
5479			pointBefore = i > 0 ? pointsWithTangents[i - 1] : null;
5480			pointAfter = i < pointsLen - 1 ? pointsWithTangents[i + 1] : null;
5481			if (pointAfter && !pointAfter.model.skip) {
5482				var slopeDeltaX = (pointAfter.model.x - pointCurrent.model.x);
5483
5484				// In the case of two points that appear at the same x pixel, slopeDeltaX is 0
5485				pointCurrent.deltaK = slopeDeltaX !== 0 ? (pointAfter.model.y - pointCurrent.model.y) / slopeDeltaX : 0;
5486			}
5487
5488			if (!pointBefore || pointBefore.model.skip) {
5489				pointCurrent.mK = pointCurrent.deltaK;
5490			} else if (!pointAfter || pointAfter.model.skip) {
5491				pointCurrent.mK = pointBefore.deltaK;
5492			} else if (this.sign(pointBefore.deltaK) !== this.sign(pointCurrent.deltaK)) {
5493				pointCurrent.mK = 0;
5494			} else {
5495				pointCurrent.mK = (pointBefore.deltaK + pointCurrent.deltaK) / 2;
5496			}
5497		}
5498
5499		// Adjust tangents to ensure monotonic properties
5500		var alphaK, betaK, tauK, squaredMagnitude;
5501		for (i = 0; i < pointsLen - 1; ++i) {
5502			pointCurrent = pointsWithTangents[i];
5503			pointAfter = pointsWithTangents[i + 1];
5504			if (pointCurrent.model.skip || pointAfter.model.skip) {
5505				continue;
5506			}
5507
5508			if (helpers.almostEquals(pointCurrent.deltaK, 0, this.EPSILON)) {
5509				pointCurrent.mK = pointAfter.mK = 0;
5510				continue;
5511			}
5512
5513			alphaK = pointCurrent.mK / pointCurrent.deltaK;
5514			betaK = pointAfter.mK / pointCurrent.deltaK;
5515			squaredMagnitude = Math.pow(alphaK, 2) + Math.pow(betaK, 2);
5516			if (squaredMagnitude <= 9) {
5517				continue;
5518			}
5519
5520			tauK = 3 / Math.sqrt(squaredMagnitude);
5521			pointCurrent.mK = alphaK * tauK * pointCurrent.deltaK;
5522			pointAfter.mK = betaK * tauK * pointCurrent.deltaK;
5523		}
5524
5525		// Compute control points
5526		var deltaX;
5527		for (i = 0; i < pointsLen; ++i) {
5528			pointCurrent = pointsWithTangents[i];
5529			if (pointCurrent.model.skip) {
5530				continue;
5531			}
5532
5533			pointBefore = i > 0 ? pointsWithTangents[i - 1] : null;
5534			pointAfter = i < pointsLen - 1 ? pointsWithTangents[i + 1] : null;
5535			if (pointBefore && !pointBefore.model.skip) {
5536				deltaX = (pointCurrent.model.x - pointBefore.model.x) / 3;
5537				pointCurrent.model.controlPointPreviousX = pointCurrent.model.x - deltaX;
5538				pointCurrent.model.controlPointPreviousY = pointCurrent.model.y - deltaX * pointCurrent.mK;
5539			}
5540			if (pointAfter && !pointAfter.model.skip) {
5541				deltaX = (pointAfter.model.x - pointCurrent.model.x) / 3;
5542				pointCurrent.model.controlPointNextX = pointCurrent.model.x + deltaX;
5543				pointCurrent.model.controlPointNextY = pointCurrent.model.y + deltaX * pointCurrent.mK;
5544			}
5545		}
5546	};
5547	helpers.nextItem = function(collection, index, loop) {
5548		if (loop) {
5549			return index >= collection.length - 1 ? collection[0] : collection[index + 1];
5550		}
5551		return index >= collection.length - 1 ? collection[collection.length - 1] : collection[index + 1];
5552	};
5553	helpers.previousItem = function(collection, index, loop) {
5554		if (loop) {
5555			return index <= 0 ? collection[collection.length - 1] : collection[index - 1];
5556		}
5557		return index <= 0 ? collection[0] : collection[index - 1];
5558	};
5559	// Implementation of the nice number algorithm used in determining where axis labels will go
5560	helpers.niceNum = function(range, round) {
5561		var exponent = Math.floor(helpers.log10(range));
5562		var fraction = range / Math.pow(10, exponent);
5563		var niceFraction;
5564
5565		if (round) {
5566			if (fraction < 1.5) {
5567				niceFraction = 1;
5568			} else if (fraction < 3) {
5569				niceFraction = 2;
5570			} else if (fraction < 7) {
5571				niceFraction = 5;
5572			} else {
5573				niceFraction = 10;
5574			}
5575		} else if (fraction <= 1.0) {
5576			niceFraction = 1;
5577		} else if (fraction <= 2) {
5578			niceFraction = 2;
5579		} else if (fraction <= 5) {
5580			niceFraction = 5;
5581		} else {
5582			niceFraction = 10;
5583		}
5584
5585		return niceFraction * Math.pow(10, exponent);
5586	};
5587	// Request animation polyfill - http://www.paulirish.com/2011/requestanimationframe-for-smart-animating/
5588	helpers.requestAnimFrame = (function() {
5589		if (typeof window === 'undefined') {
5590			return function(callback) {
5591				callback();
5592			};
5593		}
5594		return window.requestAnimationFrame ||
5595			window.webkitRequestAnimationFrame ||
5596			window.mozRequestAnimationFrame ||
5597			window.oRequestAnimationFrame ||
5598			window.msRequestAnimationFrame ||
5599			function(callback) {
5600				return window.setTimeout(callback, 1000 / 60);
5601			};
5602	}());
5603	// -- DOM methods
5604	helpers.getRelativePosition = function(evt, chart) {
5605		var mouseX, mouseY;
5606		var e = evt.originalEvent || evt;
5607		var canvas = evt.currentTarget || evt.srcElement;
5608		var boundingRect = canvas.getBoundingClientRect();
5609
5610		var touches = e.touches;
5611		if (touches && touches.length > 0) {
5612			mouseX = touches[0].clientX;
5613			mouseY = touches[0].clientY;
5614
5615		} else {
5616			mouseX = e.clientX;
5617			mouseY = e.clientY;
5618		}
5619
5620		// Scale mouse coordinates into canvas coordinates
5621		// by following the pattern laid out by 'jerryj' in the comments of
5622		// http://www.html5canvastutorials.com/advanced/html5-canvas-mouse-coordinates/
5623		var paddingLeft = parseFloat(helpers.getStyle(canvas, 'padding-left'));
5624		var paddingTop = parseFloat(helpers.getStyle(canvas, 'padding-top'));
5625		var paddingRight = parseFloat(helpers.getStyle(canvas, 'padding-right'));
5626		var paddingBottom = parseFloat(helpers.getStyle(canvas, 'padding-bottom'));
5627		var width = boundingRect.right - boundingRect.left - paddingLeft - paddingRight;
5628		var height = boundingRect.bottom - boundingRect.top - paddingTop - paddingBottom;
5629
5630		// We divide by the current device pixel ratio, because the canvas is scaled up by that amount in each direction. However
5631		// the backend model is in unscaled coordinates. Since we are going to deal with our model coordinates, we go back here
5632		mouseX = Math.round((mouseX - boundingRect.left - paddingLeft) / (width) * canvas.width / chart.currentDevicePixelRatio);
5633		mouseY = Math.round((mouseY - boundingRect.top - paddingTop) / (height) * canvas.height / chart.currentDevicePixelRatio);
5634
5635		return {
5636			x: mouseX,
5637			y: mouseY
5638		};
5639
5640	};
5641
5642	// Private helper function to convert max-width/max-height values that may be percentages into a number
5643	function parseMaxStyle(styleValue, node, parentProperty) {
5644		var valueInPixels;
5645		if (typeof styleValue === 'string') {
5646			valueInPixels = parseInt(styleValue, 10);
5647
5648			if (styleValue.indexOf('%') !== -1) {
5649				// percentage * size in dimension
5650				valueInPixels = valueInPixels / 100 * node.parentNode[parentProperty];
5651			}
5652		} else {
5653			valueInPixels = styleValue;
5654		}
5655
5656		return valueInPixels;
5657	}
5658
5659	/**
5660	 * Returns if the given value contains an effective constraint.
5661	 * @private
5662	 */
5663	function isConstrainedValue(value) {
5664		return value !== undefined && value !== null && value !== 'none';
5665	}
5666
5667	// Private helper to get a constraint dimension
5668	// @param domNode : the node to check the constraint on
5669	// @param maxStyle : the style that defines the maximum for the direction we are using (maxWidth / maxHeight)
5670	// @param percentageProperty : property of parent to use when calculating width as a percentage
5671	// @see http://www.nathanaeljones.com/blog/2013/reading-max-width-cross-browser
5672	function getConstraintDimension(domNode, maxStyle, percentageProperty) {
5673		var view = document.defaultView;
5674		var parentNode = domNode.parentNode;
5675		var constrainedNode = view.getComputedStyle(domNode)[maxStyle];
5676		var constrainedContainer = view.getComputedStyle(parentNode)[maxStyle];
5677		var hasCNode = isConstrainedValue(constrainedNode);
5678		var hasCContainer = isConstrainedValue(constrainedContainer);
5679		var infinity = Number.POSITIVE_INFINITY;
5680
5681		if (hasCNode || hasCContainer) {
5682			return Math.min(
5683				hasCNode ? parseMaxStyle(constrainedNode, domNode, percentageProperty) : infinity,
5684				hasCContainer ? parseMaxStyle(constrainedContainer, parentNode, percentageProperty) : infinity);
5685		}
5686
5687		return 'none';
5688	}
5689	// returns Number or undefined if no constraint
5690	helpers.getConstraintWidth = function(domNode) {
5691		return getConstraintDimension(domNode, 'max-width', 'clientWidth');
5692	};
5693	// returns Number or undefined if no constraint
5694	helpers.getConstraintHeight = function(domNode) {
5695		return getConstraintDimension(domNode, 'max-height', 'clientHeight');
5696	};
5697	helpers.getMaximumWidth = function(domNode) {
5698		var container = domNode.parentNode;
5699		if (!container) {
5700			return domNode.clientWidth;
5701		}
5702
5703		var paddingLeft = parseInt(helpers.getStyle(container, 'padding-left'), 10);
5704		var paddingRight = parseInt(helpers.getStyle(container, 'padding-right'), 10);
5705		var w = container.clientWidth - paddingLeft - paddingRight;
5706		var cw = helpers.getConstraintWidth(domNode);
5707		return isNaN(cw) ? w : Math.min(w, cw);
5708	};
5709	helpers.getMaximumHeight = function(domNode) {
5710		var container = domNode.parentNode;
5711		if (!container) {
5712			return domNode.clientHeight;
5713		}
5714
5715		var paddingTop = parseInt(helpers.getStyle(container, 'padding-top'), 10);
5716		var paddingBottom = parseInt(helpers.getStyle(container, 'padding-bottom'), 10);
5717		var h = container.clientHeight - paddingTop - paddingBottom;
5718		var ch = helpers.getConstraintHeight(domNode);
5719		return isNaN(ch) ? h : Math.min(h, ch);
5720	};
5721	helpers.getStyle = function(el, property) {
5722		return el.currentStyle ?
5723			el.currentStyle[property] :
5724			document.defaultView.getComputedStyle(el, null).getPropertyValue(property);
5725	};
5726	helpers.retinaScale = function(chart, forceRatio) {
5727		var pixelRatio = chart.currentDevicePixelRatio = forceRatio || window.devicePixelRatio || 1;
5728		if (pixelRatio === 1) {
5729			return;
5730		}
5731
5732		var canvas = chart.canvas;
5733		var height = chart.height;
5734		var width = chart.width;
5735
5736		canvas.height = height * pixelRatio;
5737		canvas.width = width * pixelRatio;
5738		chart.ctx.scale(pixelRatio, pixelRatio);
5739
5740		// If no style has been set on the canvas, the render size is used as display size,
5741		// making the chart visually bigger, so let's enforce it to the "correct" values.
5742		// See https://github.com/chartjs/Chart.js/issues/3575
5743		if (!canvas.style.height && !canvas.style.width) {
5744			canvas.style.height = height + 'px';
5745			canvas.style.width = width + 'px';
5746		}
5747	};
5748	// -- Canvas methods
5749	helpers.fontString = function(pixelSize, fontStyle, fontFamily) {
5750		return fontStyle + ' ' + pixelSize + 'px ' + fontFamily;
5751	};
5752	helpers.longestText = function(ctx, font, arrayOfThings, cache) {
5753		cache = cache || {};
5754		var data = cache.data = cache.data || {};
5755		var gc = cache.garbageCollect = cache.garbageCollect || [];
5756
5757		if (cache.font !== font) {
5758			data = cache.data = {};
5759			gc = cache.garbageCollect = [];
5760			cache.font = font;
5761		}
5762
5763		ctx.font = font;
5764		var longest = 0;
5765		helpers.each(arrayOfThings, function(thing) {
5766			// Undefined strings and arrays should not be measured
5767			if (thing !== undefined && thing !== null && helpers.isArray(thing) !== true) {
5768				longest = helpers.measureText(ctx, data, gc, longest, thing);
5769			} else if (helpers.isArray(thing)) {
5770				// if it is an array lets measure each element
5771				// to do maybe simplify this function a bit so we can do this more recursively?
5772				helpers.each(thing, function(nestedThing) {
5773					// Undefined strings and arrays should not be measured
5774					if (nestedThing !== undefined && nestedThing !== null && !helpers.isArray(nestedThing)) {
5775						longest = helpers.measureText(ctx, data, gc, longest, nestedThing);
5776					}
5777				});
5778			}
5779		});
5780
5781		var gcLen = gc.length / 2;
5782		if (gcLen > arrayOfThings.length) {
5783			for (var i = 0; i < gcLen; i++) {
5784				delete data[gc[i]];
5785			}
5786			gc.splice(0, gcLen);
5787		}
5788		return longest;
5789	};
5790	helpers.measureText = function(ctx, data, gc, longest, string) {
5791		var textWidth = data[string];
5792		if (!textWidth) {
5793			textWidth = data[string] = ctx.measureText(string).width;
5794			gc.push(string);
5795		}
5796		if (textWidth > longest) {
5797			longest = textWidth;
5798		}
5799		return longest;
5800	};
5801	helpers.numberOfLabelLines = function(arrayOfThings) {
5802		var numberOfLines = 1;
5803		helpers.each(arrayOfThings, function(thing) {
5804			if (helpers.isArray(thing)) {
5805				if (thing.length > numberOfLines) {
5806					numberOfLines = thing.length;
5807				}
5808			}
5809		});
5810		return numberOfLines;
5811	};
5812
5813	helpers.color = !color ?
5814		function(value) {
5815			console.error('Color.js not found!');
5816			return value;
5817		} :
5818		function(value) {
5819			/* global CanvasGradient */
5820			if (value instanceof CanvasGradient) {
5821				value = defaults.global.defaultColor;
5822			}
5823
5824			return color(value);
5825		};
5826
5827	helpers.getHoverColor = function(colorValue) {
5828		/* global CanvasPattern */
5829		return (colorValue instanceof CanvasPattern) ?
5830			colorValue :
5831			helpers.color(colorValue).saturate(0.5).darken(0.1).rgbString();
5832	};
5833};
5834
5835},{"25":25,"3":3,"45":45}],28:[function(require,module,exports){
5836'use strict';
5837
5838var helpers = require(45);
5839
5840/**
5841 * Helper function to get relative position for an event
5842 * @param {Event|IEvent} event - The event to get the position for
5843 * @param {Chart} chart - The chart
5844 * @returns {Point} the event position
5845 */
5846function getRelativePosition(e, chart) {
5847	if (e.native) {
5848		return {
5849			x: e.x,
5850			y: e.y
5851		};
5852	}
5853
5854	return helpers.getRelativePosition(e, chart);
5855}
5856
5857/**
5858 * Helper function to traverse all of the visible elements in the chart
5859 * @param chart {chart} the chart
5860 * @param handler {Function} the callback to execute for each visible item
5861 */
5862function parseVisibleItems(chart, handler) {
5863	var datasets = chart.data.datasets;
5864	var meta, i, j, ilen, jlen;
5865
5866	for (i = 0, ilen = datasets.length; i < ilen; ++i) {
5867		if (!chart.isDatasetVisible(i)) {
5868			continue;
5869		}
5870
5871		meta = chart.getDatasetMeta(i);
5872		for (j = 0, jlen = meta.data.length; j < jlen; ++j) {
5873			var element = meta.data[j];
5874			if (!element._view.skip) {
5875				handler(element);
5876			}
5877		}
5878	}
5879}
5880
5881/**
5882 * Helper function to get the items that intersect the event position
5883 * @param items {ChartElement[]} elements to filter
5884 * @param position {Point} the point to be nearest to
5885 * @return {ChartElement[]} the nearest items
5886 */
5887function getIntersectItems(chart, position) {
5888	var elements = [];
5889
5890	parseVisibleItems(chart, function(element) {
5891		if (element.inRange(position.x, position.y)) {
5892			elements.push(element);
5893		}
5894	});
5895
5896	return elements;
5897}
5898
5899/**
5900 * Helper function to get the items nearest to the event position considering all visible items in teh chart
5901 * @param chart {Chart} the chart to look at elements from
5902 * @param position {Point} the point to be nearest to
5903 * @param intersect {Boolean} if true, only consider items that intersect the position
5904 * @param distanceMetric {Function} function to provide the distance between points
5905 * @return {ChartElement[]} the nearest items
5906 */
5907function getNearestItems(chart, position, intersect, distanceMetric) {
5908	var minDistance = Number.POSITIVE_INFINITY;
5909	var nearestItems = [];
5910
5911	parseVisibleItems(chart, function(element) {
5912		if (intersect && !element.inRange(position.x, position.y)) {
5913			return;
5914		}
5915
5916		var center = element.getCenterPoint();
5917		var distance = distanceMetric(position, center);
5918
5919		if (distance < minDistance) {
5920			nearestItems = [element];
5921			minDistance = distance;
5922		} else if (distance === minDistance) {
5923			// Can have multiple items at the same distance in which case we sort by size
5924			nearestItems.push(element);
5925		}
5926	});
5927
5928	return nearestItems;
5929}
5930
5931/**
5932 * Get a distance metric function for two points based on the
5933 * axis mode setting
5934 * @param {String} axis the axis mode. x|y|xy
5935 */
5936function getDistanceMetricForAxis(axis) {
5937	var useX = axis.indexOf('x') !== -1;
5938	var useY = axis.indexOf('y') !== -1;
5939
5940	return function(pt1, pt2) {
5941		var deltaX = useX ? Math.abs(pt1.x - pt2.x) : 0;
5942		var deltaY = useY ? Math.abs(pt1.y - pt2.y) : 0;
5943		return Math.sqrt(Math.pow(deltaX, 2) + Math.pow(deltaY, 2));
5944	};
5945}
5946
5947function indexMode(chart, e, options) {
5948	var position = getRelativePosition(e, chart);
5949	// Default axis for index mode is 'x' to match old behaviour
5950	options.axis = options.axis || 'x';
5951	var distanceMetric = getDistanceMetricForAxis(options.axis);
5952	var items = options.intersect ? getIntersectItems(chart, position) : getNearestItems(chart, position, false, distanceMetric);
5953	var elements = [];
5954
5955	if (!items.length) {
5956		return [];
5957	}
5958
5959	chart.data.datasets.forEach(function(dataset, datasetIndex) {
5960		if (chart.isDatasetVisible(datasetIndex)) {
5961			var meta = chart.getDatasetMeta(datasetIndex);
5962			var element = meta.data[items[0]._index];
5963
5964			// don't count items that are skipped (null data)
5965			if (element && !element._view.skip) {
5966				elements.push(element);
5967			}
5968		}
5969	});
5970
5971	return elements;
5972}
5973
5974/**
5975 * @interface IInteractionOptions
5976 */
5977/**
5978 * If true, only consider items that intersect the point
5979 * @name IInterfaceOptions#boolean
5980 * @type Boolean
5981 */
5982
5983/**
5984 * Contains interaction related functions
5985 * @namespace Chart.Interaction
5986 */
5987module.exports = {
5988	// Helper function for different modes
5989	modes: {
5990		single: function(chart, e) {
5991			var position = getRelativePosition(e, chart);
5992			var elements = [];
5993
5994			parseVisibleItems(chart, function(element) {
5995				if (element.inRange(position.x, position.y)) {
5996					elements.push(element);
5997					return elements;
5998				}
5999			});
6000
6001			return elements.slice(0, 1);
6002		},
6003
6004		/**
6005		 * @function Chart.Interaction.modes.label
6006		 * @deprecated since version 2.4.0
6007		 * @todo remove at version 3
6008		 * @private
6009		 */
6010		label: indexMode,
6011
6012		/**
6013		 * Returns items at the same index. If the options.intersect parameter is true, we only return items if we intersect something
6014		 * If the options.intersect mode is false, we find the nearest item and return the items at the same index as that item
6015		 * @function Chart.Interaction.modes.index
6016		 * @since v2.4.0
6017		 * @param chart {chart} the chart we are returning items from
6018		 * @param e {Event} the event we are find things at
6019		 * @param options {IInteractionOptions} options to use during interaction
6020		 * @return {Chart.Element[]} Array of elements that are under the point. If none are found, an empty array is returned
6021		 */
6022		index: indexMode,
6023
6024		/**
6025		 * Returns items in the same dataset. If the options.intersect parameter is true, we only return items if we intersect something
6026		 * If the options.intersect is false, we find the nearest item and return the items in that dataset
6027		 * @function Chart.Interaction.modes.dataset
6028		 * @param chart {chart} the chart we are returning items from
6029		 * @param e {Event} the event we are find things at
6030		 * @param options {IInteractionOptions} options to use during interaction
6031		 * @return {Chart.Element[]} Array of elements that are under the point. If none are found, an empty array is returned
6032		 */
6033		dataset: function(chart, e, options) {
6034			var position = getRelativePosition(e, chart);
6035			options.axis = options.axis || 'xy';
6036			var distanceMetric = getDistanceMetricForAxis(options.axis);
6037			var items = options.intersect ? getIntersectItems(chart, position) : getNearestItems(chart, position, false, distanceMetric);
6038
6039			if (items.length > 0) {
6040				items = chart.getDatasetMeta(items[0]._datasetIndex).data;
6041			}
6042
6043			return items;
6044		},
6045
6046		/**
6047		 * @function Chart.Interaction.modes.x-axis
6048		 * @deprecated since version 2.4.0. Use index mode and intersect == true
6049		 * @todo remove at version 3
6050		 * @private
6051		 */
6052		'x-axis': function(chart, e) {
6053			return indexMode(chart, e, {intersect: false});
6054		},
6055
6056		/**
6057		 * Point mode returns all elements that hit test based on the event position
6058		 * of the event
6059		 * @function Chart.Interaction.modes.intersect
6060		 * @param chart {chart} the chart we are returning items from
6061		 * @param e {Event} the event we are find things at
6062		 * @return {Chart.Element[]} Array of elements that are under the point. If none are found, an empty array is returned
6063		 */
6064		point: function(chart, e) {
6065			var position = getRelativePosition(e, chart);
6066			return getIntersectItems(chart, position);
6067		},
6068
6069		/**
6070		 * nearest mode returns the element closest to the point
6071		 * @function Chart.Interaction.modes.intersect
6072		 * @param chart {chart} the chart we are returning items from
6073		 * @param e {Event} the event we are find things at
6074		 * @param options {IInteractionOptions} options to use
6075		 * @return {Chart.Element[]} Array of elements that are under the point. If none are found, an empty array is returned
6076		 */
6077		nearest: function(chart, e, options) {
6078			var position = getRelativePosition(e, chart);
6079			options.axis = options.axis || 'xy';
6080			var distanceMetric = getDistanceMetricForAxis(options.axis);
6081			var nearestItems = getNearestItems(chart, position, options.intersect, distanceMetric);
6082
6083			// We have multiple items at the same distance from the event. Now sort by smallest
6084			if (nearestItems.length > 1) {
6085				nearestItems.sort(function(a, b) {
6086					var sizeA = a.getArea();
6087					var sizeB = b.getArea();
6088					var ret = sizeA - sizeB;
6089
6090					if (ret === 0) {
6091						// if equal sort by dataset index
6092						ret = a._datasetIndex - b._datasetIndex;
6093					}
6094
6095					return ret;
6096				});
6097			}
6098
6099			// Return only 1 item
6100			return nearestItems.slice(0, 1);
6101		},
6102
6103		/**
6104		 * x mode returns the elements that hit-test at the current x coordinate
6105		 * @function Chart.Interaction.modes.x
6106		 * @param chart {chart} the chart we are returning items from
6107		 * @param e {Event} the event we are find things at
6108		 * @param options {IInteractionOptions} options to use
6109		 * @return {Chart.Element[]} Array of elements that are under the point. If none are found, an empty array is returned
6110		 */
6111		x: function(chart, e, options) {
6112			var position = getRelativePosition(e, chart);
6113			var items = [];
6114			var intersectsItem = false;
6115
6116			parseVisibleItems(chart, function(element) {
6117				if (element.inXRange(position.x)) {
6118					items.push(element);
6119				}
6120
6121				if (element.inRange(position.x, position.y)) {
6122					intersectsItem = true;
6123				}
6124			});
6125
6126			// If we want to trigger on an intersect and we don't have any items
6127			// that intersect the position, return nothing
6128			if (options.intersect && !intersectsItem) {
6129				items = [];
6130			}
6131			return items;
6132		},
6133
6134		/**
6135		 * y mode returns the elements that hit-test at the current y coordinate
6136		 * @function Chart.Interaction.modes.y
6137		 * @param chart {chart} the chart we are returning items from
6138		 * @param e {Event} the event we are find things at
6139		 * @param options {IInteractionOptions} options to use
6140		 * @return {Chart.Element[]} Array of elements that are under the point. If none are found, an empty array is returned
6141		 */
6142		y: function(chart, e, options) {
6143			var position = getRelativePosition(e, chart);
6144			var items = [];
6145			var intersectsItem = false;
6146
6147			parseVisibleItems(chart, function(element) {
6148				if (element.inYRange(position.y)) {
6149					items.push(element);
6150				}
6151
6152				if (element.inRange(position.x, position.y)) {
6153					intersectsItem = true;
6154				}
6155			});
6156
6157			// If we want to trigger on an intersect and we don't have any items
6158			// that intersect the position, return nothing
6159			if (options.intersect && !intersectsItem) {
6160				items = [];
6161			}
6162			return items;
6163		}
6164	}
6165};
6166
6167},{"45":45}],29:[function(require,module,exports){
6168'use strict';
6169
6170var defaults = require(25);
6171
6172defaults._set('global', {
6173	responsive: true,
6174	responsiveAnimationDuration: 0,
6175	maintainAspectRatio: true,
6176	events: ['mousemove', 'mouseout', 'click', 'touchstart', 'touchmove'],
6177	hover: {
6178		onHover: null,
6179		mode: 'nearest',
6180		intersect: true,
6181		animationDuration: 400
6182	},
6183	onClick: null,
6184	defaultColor: 'rgba(0,0,0,0.1)',
6185	defaultFontColor: '#666',
6186	defaultFontFamily: "'Helvetica Neue', 'Helvetica', 'Arial', sans-serif",
6187	defaultFontSize: 12,
6188	defaultFontStyle: 'normal',
6189	showLines: true,
6190
6191	// Element defaults defined in element extensions
6192	elements: {},
6193
6194	// Layout options such as padding
6195	layout: {
6196		padding: {
6197			top: 0,
6198			right: 0,
6199			bottom: 0,
6200			left: 0
6201		}
6202	}
6203});
6204
6205module.exports = function() {
6206
6207	// Occupy the global variable of Chart, and create a simple base class
6208	var Chart = function(item, config) {
6209		this.construct(item, config);
6210		return this;
6211	};
6212
6213	Chart.Chart = Chart;
6214
6215	return Chart;
6216};
6217
6218},{"25":25}],30:[function(require,module,exports){
6219'use strict';
6220
6221var helpers = require(45);
6222
6223function filterByPosition(array, position) {
6224	return helpers.where(array, function(v) {
6225		return v.position === position;
6226	});
6227}
6228
6229function sortByWeight(array, reverse) {
6230	array.forEach(function(v, i) {
6231		v._tmpIndex_ = i;
6232		return v;
6233	});
6234	array.sort(function(a, b) {
6235		var v0 = reverse ? b : a;
6236		var v1 = reverse ? a : b;
6237		return v0.weight === v1.weight ?
6238			v0._tmpIndex_ - v1._tmpIndex_ :
6239			v0.weight - v1.weight;
6240	});
6241	array.forEach(function(v) {
6242		delete v._tmpIndex_;
6243	});
6244}
6245
6246/**
6247 * @interface ILayoutItem
6248 * @prop {String} position - The position of the item in the chart layout. Possible values are
6249 * 'left', 'top', 'right', 'bottom', and 'chartArea'
6250 * @prop {Number} weight - The weight used to sort the item. Higher weights are further away from the chart area
6251 * @prop {Boolean} fullWidth - if true, and the item is horizontal, then push vertical boxes down
6252 * @prop {Function} isHorizontal - returns true if the layout item is horizontal (ie. top or bottom)
6253 * @prop {Function} update - Takes two parameters: width and height. Returns size of item
6254 * @prop {Function} getPadding -  Returns an object with padding on the edges
6255 * @prop {Number} width - Width of item. Must be valid after update()
6256 * @prop {Number} height - Height of item. Must be valid after update()
6257 * @prop {Number} left - Left edge of the item. Set by layout system and cannot be used in update
6258 * @prop {Number} top - Top edge of the item. Set by layout system and cannot be used in update
6259 * @prop {Number} right - Right edge of the item. Set by layout system and cannot be used in update
6260 * @prop {Number} bottom - Bottom edge of the item. Set by layout system and cannot be used in update
6261 */
6262
6263// The layout service is very self explanatory.  It's responsible for the layout within a chart.
6264// Scales, Legends and Plugins all rely on the layout service and can easily register to be placed anywhere they need
6265// It is this service's responsibility of carrying out that layout.
6266module.exports = {
6267	defaults: {},
6268
6269	/**
6270	 * Register a box to a chart.
6271	 * A box is simply a reference to an object that requires layout. eg. Scales, Legend, Title.
6272	 * @param {Chart} chart - the chart to use
6273	 * @param {ILayoutItem} item - the item to add to be layed out
6274	 */
6275	addBox: function(chart, item) {
6276		if (!chart.boxes) {
6277			chart.boxes = [];
6278		}
6279
6280		// initialize item with default values
6281		item.fullWidth = item.fullWidth || false;
6282		item.position = item.position || 'top';
6283		item.weight = item.weight || 0;
6284
6285		chart.boxes.push(item);
6286	},
6287
6288	/**
6289	 * Remove a layoutItem from a chart
6290	 * @param {Chart} chart - the chart to remove the box from
6291	 * @param {Object} layoutItem - the item to remove from the layout
6292	 */
6293	removeBox: function(chart, layoutItem) {
6294		var index = chart.boxes ? chart.boxes.indexOf(layoutItem) : -1;
6295		if (index !== -1) {
6296			chart.boxes.splice(index, 1);
6297		}
6298	},
6299
6300	/**
6301	 * Sets (or updates) options on the given `item`.
6302	 * @param {Chart} chart - the chart in which the item lives (or will be added to)
6303	 * @param {Object} item - the item to configure with the given options
6304	 * @param {Object} options - the new item options.
6305	 */
6306	configure: function(chart, item, options) {
6307		var props = ['fullWidth', 'position', 'weight'];
6308		var ilen = props.length;
6309		var i = 0;
6310		var prop;
6311
6312		for (; i < ilen; ++i) {
6313			prop = props[i];
6314			if (options.hasOwnProperty(prop)) {
6315				item[prop] = options[prop];
6316			}
6317		}
6318	},
6319
6320	/**
6321	 * Fits boxes of the given chart into the given size by having each box measure itself
6322	 * then running a fitting algorithm
6323	 * @param {Chart} chart - the chart
6324	 * @param {Number} width - the width to fit into
6325	 * @param {Number} height - the height to fit into
6326	 */
6327	update: function(chart, width, height) {
6328		if (!chart) {
6329			return;
6330		}
6331
6332		var layoutOptions = chart.options.layout || {};
6333		var padding = helpers.options.toPadding(layoutOptions.padding);
6334		var leftPadding = padding.left;
6335		var rightPadding = padding.right;
6336		var topPadding = padding.top;
6337		var bottomPadding = padding.bottom;
6338
6339		var leftBoxes = filterByPosition(chart.boxes, 'left');
6340		var rightBoxes = filterByPosition(chart.boxes, 'right');
6341		var topBoxes = filterByPosition(chart.boxes, 'top');
6342		var bottomBoxes = filterByPosition(chart.boxes, 'bottom');
6343		var chartAreaBoxes = filterByPosition(chart.boxes, 'chartArea');
6344
6345		// Sort boxes by weight. A higher weight is further away from the chart area
6346		sortByWeight(leftBoxes, true);
6347		sortByWeight(rightBoxes, false);
6348		sortByWeight(topBoxes, true);
6349		sortByWeight(bottomBoxes, false);
6350
6351		// Essentially we now have any number of boxes on each of the 4 sides.
6352		// Our canvas looks like the following.
6353		// The areas L1 and L2 are the left axes. R1 is the right axis, T1 is the top axis and
6354		// B1 is the bottom axis
6355		// There are also 4 quadrant-like locations (left to right instead of clockwise) reserved for chart overlays
6356		// These locations are single-box locations only, when trying to register a chartArea location that is already taken,
6357		// an error will be thrown.
6358		//
6359		// |----------------------------------------------------|
6360		// |                  T1 (Full Width)                   |
6361		// |----------------------------------------------------|
6362		// |    |    |                 T2                  |    |
6363		// |    |----|-------------------------------------|----|
6364		// |    |    | C1 |                           | C2 |    |
6365		// |    |    |----|                           |----|    |
6366		// |    |    |                                     |    |
6367		// | L1 | L2 |           ChartArea (C0)            | R1 |
6368		// |    |    |                                     |    |
6369		// |    |    |----|                           |----|    |
6370		// |    |    | C3 |                           | C4 |    |
6371		// |    |----|-------------------------------------|----|
6372		// |    |    |                 B1                  |    |
6373		// |----------------------------------------------------|
6374		// |                  B2 (Full Width)                   |
6375		// |----------------------------------------------------|
6376		//
6377		// What we do to find the best sizing, we do the following
6378		// 1. Determine the minimum size of the chart area.
6379		// 2. Split the remaining width equally between each vertical axis
6380		// 3. Split the remaining height equally between each horizontal axis
6381		// 4. Give each layout the maximum size it can be. The layout will return it's minimum size
6382		// 5. Adjust the sizes of each axis based on it's minimum reported size.
6383		// 6. Refit each axis
6384		// 7. Position each axis in the final location
6385		// 8. Tell the chart the final location of the chart area
6386		// 9. Tell any axes that overlay the chart area the positions of the chart area
6387
6388		// Step 1
6389		var chartWidth = width - leftPadding - rightPadding;
6390		var chartHeight = height - topPadding - bottomPadding;
6391		var chartAreaWidth = chartWidth / 2; // min 50%
6392		var chartAreaHeight = chartHeight / 2; // min 50%
6393
6394		// Step 2
6395		var verticalBoxWidth = (width - chartAreaWidth) / (leftBoxes.length + rightBoxes.length);
6396
6397		// Step 3
6398		var horizontalBoxHeight = (height - chartAreaHeight) / (topBoxes.length + bottomBoxes.length);
6399
6400		// Step 4
6401		var maxChartAreaWidth = chartWidth;
6402		var maxChartAreaHeight = chartHeight;
6403		var minBoxSizes = [];
6404
6405		function getMinimumBoxSize(box) {
6406			var minSize;
6407			var isHorizontal = box.isHorizontal();
6408
6409			if (isHorizontal) {
6410				minSize = box.update(box.fullWidth ? chartWidth : maxChartAreaWidth, horizontalBoxHeight);
6411				maxChartAreaHeight -= minSize.height;
6412			} else {
6413				minSize = box.update(verticalBoxWidth, maxChartAreaHeight);
6414				maxChartAreaWidth -= minSize.width;
6415			}
6416
6417			minBoxSizes.push({
6418				horizontal: isHorizontal,
6419				minSize: minSize,
6420				box: box,
6421			});
6422		}
6423
6424		helpers.each(leftBoxes.concat(rightBoxes, topBoxes, bottomBoxes), getMinimumBoxSize);
6425
6426		// If a horizontal box has padding, we move the left boxes over to avoid ugly charts (see issue #2478)
6427		var maxHorizontalLeftPadding = 0;
6428		var maxHorizontalRightPadding = 0;
6429		var maxVerticalTopPadding = 0;
6430		var maxVerticalBottomPadding = 0;
6431
6432		helpers.each(topBoxes.concat(bottomBoxes), function(horizontalBox) {
6433			if (horizontalBox.getPadding) {
6434				var boxPadding = horizontalBox.getPadding();
6435				maxHorizontalLeftPadding = Math.max(maxHorizontalLeftPadding, boxPadding.left);
6436				maxHorizontalRightPadding = Math.max(maxHorizontalRightPadding, boxPadding.right);
6437			}
6438		});
6439
6440		helpers.each(leftBoxes.concat(rightBoxes), function(verticalBox) {
6441			if (verticalBox.getPadding) {
6442				var boxPadding = verticalBox.getPadding();
6443				maxVerticalTopPadding = Math.max(maxVerticalTopPadding, boxPadding.top);
6444				maxVerticalBottomPadding = Math.max(maxVerticalBottomPadding, boxPadding.bottom);
6445			}
6446		});
6447
6448		// At this point, maxChartAreaHeight and maxChartAreaWidth are the size the chart area could
6449		// be if the axes are drawn at their minimum sizes.
6450		// Steps 5 & 6
6451		var totalLeftBoxesWidth = leftPadding;
6452		var totalRightBoxesWidth = rightPadding;
6453		var totalTopBoxesHeight = topPadding;
6454		var totalBottomBoxesHeight = bottomPadding;
6455
6456		// Function to fit a box
6457		function fitBox(box) {
6458			var minBoxSize = helpers.findNextWhere(minBoxSizes, function(minBox) {
6459				return minBox.box === box;
6460			});
6461
6462			if (minBoxSize) {
6463				if (box.isHorizontal()) {
6464					var scaleMargin = {
6465						left: Math.max(totalLeftBoxesWidth, maxHorizontalLeftPadding),
6466						right: Math.max(totalRightBoxesWidth, maxHorizontalRightPadding),
6467						top: 0,
6468						bottom: 0
6469					};
6470
6471					// Don't use min size here because of label rotation. When the labels are rotated, their rotation highly depends
6472					// on the margin. Sometimes they need to increase in size slightly
6473					box.update(box.fullWidth ? chartWidth : maxChartAreaWidth, chartHeight / 2, scaleMargin);
6474				} else {
6475					box.update(minBoxSize.minSize.width, maxChartAreaHeight);
6476				}
6477			}
6478		}
6479
6480		// Update, and calculate the left and right margins for the horizontal boxes
6481		helpers.each(leftBoxes.concat(rightBoxes), fitBox);
6482
6483		helpers.each(leftBoxes, function(box) {
6484			totalLeftBoxesWidth += box.width;
6485		});
6486
6487		helpers.each(rightBoxes, function(box) {
6488			totalRightBoxesWidth += box.width;
6489		});
6490
6491		// Set the Left and Right margins for the horizontal boxes
6492		helpers.each(topBoxes.concat(bottomBoxes), fitBox);
6493
6494		// Figure out how much margin is on the top and bottom of the vertical boxes
6495		helpers.each(topBoxes, function(box) {
6496			totalTopBoxesHeight += box.height;
6497		});
6498
6499		helpers.each(bottomBoxes, function(box) {
6500			totalBottomBoxesHeight += box.height;
6501		});
6502
6503		function finalFitVerticalBox(box) {
6504			var minBoxSize = helpers.findNextWhere(minBoxSizes, function(minSize) {
6505				return minSize.box === box;
6506			});
6507
6508			var scaleMargin = {
6509				left: 0,
6510				right: 0,
6511				top: totalTopBoxesHeight,
6512				bottom: totalBottomBoxesHeight
6513			};
6514
6515			if (minBoxSize) {
6516				box.update(minBoxSize.minSize.width, maxChartAreaHeight, scaleMargin);
6517			}
6518		}
6519
6520		// Let the left layout know the final margin
6521		helpers.each(leftBoxes.concat(rightBoxes), finalFitVerticalBox);
6522
6523		// Recalculate because the size of each layout might have changed slightly due to the margins (label rotation for instance)
6524		totalLeftBoxesWidth = leftPadding;
6525		totalRightBoxesWidth = rightPadding;
6526		totalTopBoxesHeight = topPadding;
6527		totalBottomBoxesHeight = bottomPadding;
6528
6529		helpers.each(leftBoxes, function(box) {
6530			totalLeftBoxesWidth += box.width;
6531		});
6532
6533		helpers.each(rightBoxes, function(box) {
6534			totalRightBoxesWidth += box.width;
6535		});
6536
6537		helpers.each(topBoxes, function(box) {
6538			totalTopBoxesHeight += box.height;
6539		});
6540		helpers.each(bottomBoxes, function(box) {
6541			totalBottomBoxesHeight += box.height;
6542		});
6543
6544		// We may be adding some padding to account for rotated x axis labels
6545		var leftPaddingAddition = Math.max(maxHorizontalLeftPadding - totalLeftBoxesWidth, 0);
6546		totalLeftBoxesWidth += leftPaddingAddition;
6547		totalRightBoxesWidth += Math.max(maxHorizontalRightPadding - totalRightBoxesWidth, 0);
6548
6549		var topPaddingAddition = Math.max(maxVerticalTopPadding - totalTopBoxesHeight, 0);
6550		totalTopBoxesHeight += topPaddingAddition;
6551		totalBottomBoxesHeight += Math.max(maxVerticalBottomPadding - totalBottomBoxesHeight, 0);
6552
6553		// Figure out if our chart area changed. This would occur if the dataset layout label rotation
6554		// changed due to the application of the margins in step 6. Since we can only get bigger, this is safe to do
6555		// without calling `fit` again
6556		var newMaxChartAreaHeight = height - totalTopBoxesHeight - totalBottomBoxesHeight;
6557		var newMaxChartAreaWidth = width - totalLeftBoxesWidth - totalRightBoxesWidth;
6558
6559		if (newMaxChartAreaWidth !== maxChartAreaWidth || newMaxChartAreaHeight !== maxChartAreaHeight) {
6560			helpers.each(leftBoxes, function(box) {
6561				box.height = newMaxChartAreaHeight;
6562			});
6563
6564			helpers.each(rightBoxes, function(box) {
6565				box.height = newMaxChartAreaHeight;
6566			});
6567
6568			helpers.each(topBoxes, function(box) {
6569				if (!box.fullWidth) {
6570					box.width = newMaxChartAreaWidth;
6571				}
6572			});
6573
6574			helpers.each(bottomBoxes, function(box) {
6575				if (!box.fullWidth) {
6576					box.width = newMaxChartAreaWidth;
6577				}
6578			});
6579
6580			maxChartAreaHeight = newMaxChartAreaHeight;
6581			maxChartAreaWidth = newMaxChartAreaWidth;
6582		}
6583
6584		// Step 7 - Position the boxes
6585		var left = leftPadding + leftPaddingAddition;
6586		var top = topPadding + topPaddingAddition;
6587
6588		function placeBox(box) {
6589			if (box.isHorizontal()) {
6590				box.left = box.fullWidth ? leftPadding : totalLeftBoxesWidth;
6591				box.right = box.fullWidth ? width - rightPadding : totalLeftBoxesWidth + maxChartAreaWidth;
6592				box.top = top;
6593				box.bottom = top + box.height;
6594
6595				// Move to next point
6596				top = box.bottom;
6597
6598			} else {
6599
6600				box.left = left;
6601				box.right = left + box.width;
6602				box.top = totalTopBoxesHeight;
6603				box.bottom = totalTopBoxesHeight + maxChartAreaHeight;
6604
6605				// Move to next point
6606				left = box.right;
6607			}
6608		}
6609
6610		helpers.each(leftBoxes.concat(topBoxes), placeBox);
6611
6612		// Account for chart width and height
6613		left += maxChartAreaWidth;
6614		top += maxChartAreaHeight;
6615
6616		helpers.each(rightBoxes, placeBox);
6617		helpers.each(bottomBoxes, placeBox);
6618
6619		// Step 8
6620		chart.chartArea = {
6621			left: totalLeftBoxesWidth,
6622			top: totalTopBoxesHeight,
6623			right: totalLeftBoxesWidth + maxChartAreaWidth,
6624			bottom: totalTopBoxesHeight + maxChartAreaHeight
6625		};
6626
6627		// Step 9
6628		helpers.each(chartAreaBoxes, function(box) {
6629			box.left = chart.chartArea.left;
6630			box.top = chart.chartArea.top;
6631			box.right = chart.chartArea.right;
6632			box.bottom = chart.chartArea.bottom;
6633
6634			box.update(maxChartAreaWidth, maxChartAreaHeight);
6635		});
6636	}
6637};
6638
6639},{"45":45}],31:[function(require,module,exports){
6640'use strict';
6641
6642var defaults = require(25);
6643var helpers = require(45);
6644
6645defaults._set('global', {
6646	plugins: {}
6647});
6648
6649/**
6650 * The plugin service singleton
6651 * @namespace Chart.plugins
6652 * @since 2.1.0
6653 */
6654module.exports = {
6655	/**
6656	 * Globally registered plugins.
6657	 * @private
6658	 */
6659	_plugins: [],
6660
6661	/**
6662	 * This identifier is used to invalidate the descriptors cache attached to each chart
6663	 * when a global plugin is registered or unregistered. In this case, the cache ID is
6664	 * incremented and descriptors are regenerated during following API calls.
6665	 * @private
6666	 */
6667	_cacheId: 0,
6668
6669	/**
6670	 * Registers the given plugin(s) if not already registered.
6671	 * @param {Array|Object} plugins plugin instance(s).
6672	 */
6673	register: function(plugins) {
6674		var p = this._plugins;
6675		([]).concat(plugins).forEach(function(plugin) {
6676			if (p.indexOf(plugin) === -1) {
6677				p.push(plugin);
6678			}
6679		});
6680
6681		this._cacheId++;
6682	},
6683
6684	/**
6685	 * Unregisters the given plugin(s) only if registered.
6686	 * @param {Array|Object} plugins plugin instance(s).
6687	 */
6688	unregister: function(plugins) {
6689		var p = this._plugins;
6690		([]).concat(plugins).forEach(function(plugin) {
6691			var idx = p.indexOf(plugin);
6692			if (idx !== -1) {
6693				p.splice(idx, 1);
6694			}
6695		});
6696
6697		this._cacheId++;
6698	},
6699
6700	/**
6701	 * Remove all registered plugins.
6702	 * @since 2.1.5
6703	 */
6704	clear: function() {
6705		this._plugins = [];
6706		this._cacheId++;
6707	},
6708
6709	/**
6710	 * Returns the number of registered plugins?
6711	 * @returns {Number}
6712	 * @since 2.1.5
6713	 */
6714	count: function() {
6715		return this._plugins.length;
6716	},
6717
6718	/**
6719	 * Returns all registered plugin instances.
6720	 * @returns {Array} array of plugin objects.
6721	 * @since 2.1.5
6722	 */
6723	getAll: function() {
6724		return this._plugins;
6725	},
6726
6727	/**
6728	 * Calls enabled plugins for `chart` on the specified hook and with the given args.
6729	 * This method immediately returns as soon as a plugin explicitly returns false. The
6730	 * returned value can be used, for instance, to interrupt the current action.
6731	 * @param {Object} chart - The chart instance for which plugins should be called.
6732	 * @param {String} hook - The name of the plugin method to call (e.g. 'beforeUpdate').
6733	 * @param {Array} [args] - Extra arguments to apply to the hook call.
6734	 * @returns {Boolean} false if any of the plugins return false, else returns true.
6735	 */
6736	notify: function(chart, hook, args) {
6737		var descriptors = this.descriptors(chart);
6738		var ilen = descriptors.length;
6739		var i, descriptor, plugin, params, method;
6740
6741		for (i = 0; i < ilen; ++i) {
6742			descriptor = descriptors[i];
6743			plugin = descriptor.plugin;
6744			method = plugin[hook];
6745			if (typeof method === 'function') {
6746				params = [chart].concat(args || []);
6747				params.push(descriptor.options);
6748				if (method.apply(plugin, params) === false) {
6749					return false;
6750				}
6751			}
6752		}
6753
6754		return true;
6755	},
6756
6757	/**
6758	 * Returns descriptors of enabled plugins for the given chart.
6759	 * @returns {Array} [{ plugin, options }]
6760	 * @private
6761	 */
6762	descriptors: function(chart) {
6763		var cache = chart.$plugins || (chart.$plugins = {});
6764		if (cache.id === this._cacheId) {
6765			return cache.descriptors;
6766		}
6767
6768		var plugins = [];
6769		var descriptors = [];
6770		var config = (chart && chart.config) || {};
6771		var options = (config.options && config.options.plugins) || {};
6772
6773		this._plugins.concat(config.plugins || []).forEach(function(plugin) {
6774			var idx = plugins.indexOf(plugin);
6775			if (idx !== -1) {
6776				return;
6777			}
6778
6779			var id = plugin.id;
6780			var opts = options[id];
6781			if (opts === false) {
6782				return;
6783			}
6784
6785			if (opts === true) {
6786				opts = helpers.clone(defaults.global.plugins[id]);
6787			}
6788
6789			plugins.push(plugin);
6790			descriptors.push({
6791				plugin: plugin,
6792				options: opts || {}
6793			});
6794		});
6795
6796		cache.descriptors = descriptors;
6797		cache.id = this._cacheId;
6798		return descriptors;
6799	},
6800
6801	/**
6802	 * Invalidates cache for the given chart: descriptors hold a reference on plugin option,
6803	 * but in some cases, this reference can be changed by the user when updating options.
6804	 * https://github.com/chartjs/Chart.js/issues/5111#issuecomment-355934167
6805	 * @private
6806	 */
6807	_invalidate: function(chart) {
6808		delete chart.$plugins;
6809	}
6810};
6811
6812/**
6813 * Plugin extension hooks.
6814 * @interface IPlugin
6815 * @since 2.1.0
6816 */
6817/**
6818 * @method IPlugin#beforeInit
6819 * @desc Called before initializing `chart`.
6820 * @param {Chart.Controller} chart - The chart instance.
6821 * @param {Object} options - The plugin options.
6822 */
6823/**
6824 * @method IPlugin#afterInit
6825 * @desc Called after `chart` has been initialized and before the first update.
6826 * @param {Chart.Controller} chart - The chart instance.
6827 * @param {Object} options - The plugin options.
6828 */
6829/**
6830 * @method IPlugin#beforeUpdate
6831 * @desc Called before updating `chart`. If any plugin returns `false`, the update
6832 * is cancelled (and thus subsequent render(s)) until another `update` is triggered.
6833 * @param {Chart.Controller} chart - The chart instance.
6834 * @param {Object} options - The plugin options.
6835 * @returns {Boolean} `false` to cancel the chart update.
6836 */
6837/**
6838 * @method IPlugin#afterUpdate
6839 * @desc Called after `chart` has been updated and before rendering. Note that this
6840 * hook will not be called if the chart update has been previously cancelled.
6841 * @param {Chart.Controller} chart - The chart instance.
6842 * @param {Object} options - The plugin options.
6843 */
6844/**
6845 * @method IPlugin#beforeDatasetsUpdate
6846 * @desc Called before updating the `chart` datasets. If any plugin returns `false`,
6847 * the datasets update is cancelled until another `update` is triggered.
6848 * @param {Chart.Controller} chart - The chart instance.
6849 * @param {Object} options - The plugin options.
6850 * @returns {Boolean} false to cancel the datasets update.
6851 * @since version 2.1.5
6852*/
6853/**
6854 * @method IPlugin#afterDatasetsUpdate
6855 * @desc Called after the `chart` datasets have been updated. Note that this hook
6856 * will not be called if the datasets update has been previously cancelled.
6857 * @param {Chart.Controller} chart - The chart instance.
6858 * @param {Object} options - The plugin options.
6859 * @since version 2.1.5
6860 */
6861/**
6862 * @method IPlugin#beforeDatasetUpdate
6863 * @desc Called before updating the `chart` dataset at the given `args.index`. If any plugin
6864 * returns `false`, the datasets update is cancelled until another `update` is triggered.
6865 * @param {Chart} chart - The chart instance.
6866 * @param {Object} args - The call arguments.
6867 * @param {Number} args.index - The dataset index.
6868 * @param {Object} args.meta - The dataset metadata.
6869 * @param {Object} options - The plugin options.
6870 * @returns {Boolean} `false` to cancel the chart datasets drawing.
6871 */
6872/**
6873 * @method IPlugin#afterDatasetUpdate
6874 * @desc Called after the `chart` datasets at the given `args.index` has been updated. Note
6875 * that this hook will not be called if the datasets update has been previously cancelled.
6876 * @param {Chart} chart - The chart instance.
6877 * @param {Object} args - The call arguments.
6878 * @param {Number} args.index - The dataset index.
6879 * @param {Object} args.meta - The dataset metadata.
6880 * @param {Object} options - The plugin options.
6881 */
6882/**
6883 * @method IPlugin#beforeLayout
6884 * @desc Called before laying out `chart`. If any plugin returns `false`,
6885 * the layout update is cancelled until another `update` is triggered.
6886 * @param {Chart.Controller} chart - The chart instance.
6887 * @param {Object} options - The plugin options.
6888 * @returns {Boolean} `false` to cancel the chart layout.
6889 */
6890/**
6891 * @method IPlugin#afterLayout
6892 * @desc Called after the `chart` has been layed out. Note that this hook will not
6893 * be called if the layout update has been previously cancelled.
6894 * @param {Chart.Controller} chart - The chart instance.
6895 * @param {Object} options - The plugin options.
6896 */
6897/**
6898 * @method IPlugin#beforeRender
6899 * @desc Called before rendering `chart`. If any plugin returns `false`,
6900 * the rendering is cancelled until another `render` is triggered.
6901 * @param {Chart.Controller} chart - The chart instance.
6902 * @param {Object} options - The plugin options.
6903 * @returns {Boolean} `false` to cancel the chart rendering.
6904 */
6905/**
6906 * @method IPlugin#afterRender
6907 * @desc Called after the `chart` has been fully rendered (and animation completed). Note
6908 * that this hook will not be called if the rendering has been previously cancelled.
6909 * @param {Chart.Controller} chart - The chart instance.
6910 * @param {Object} options - The plugin options.
6911 */
6912/**
6913 * @method IPlugin#beforeDraw
6914 * @desc Called before drawing `chart` at every animation frame specified by the given
6915 * easing value. If any plugin returns `false`, the frame drawing is cancelled until
6916 * another `render` is triggered.
6917 * @param {Chart.Controller} chart - The chart instance.
6918 * @param {Number} easingValue - The current animation value, between 0.0 and 1.0.
6919 * @param {Object} options - The plugin options.
6920 * @returns {Boolean} `false` to cancel the chart drawing.
6921 */
6922/**
6923 * @method IPlugin#afterDraw
6924 * @desc Called after the `chart` has been drawn for the specific easing value. Note
6925 * that this hook will not be called if the drawing has been previously cancelled.
6926 * @param {Chart.Controller} chart - The chart instance.
6927 * @param {Number} easingValue - The current animation value, between 0.0 and 1.0.
6928 * @param {Object} options - The plugin options.
6929 */
6930/**
6931 * @method IPlugin#beforeDatasetsDraw
6932 * @desc Called before drawing the `chart` datasets. If any plugin returns `false`,
6933 * the datasets drawing is cancelled until another `render` is triggered.
6934 * @param {Chart.Controller} chart - The chart instance.
6935 * @param {Number} easingValue - The current animation value, between 0.0 and 1.0.
6936 * @param {Object} options - The plugin options.
6937 * @returns {Boolean} `false` to cancel the chart datasets drawing.
6938 */
6939/**
6940 * @method IPlugin#afterDatasetsDraw
6941 * @desc Called after the `chart` datasets have been drawn. Note that this hook
6942 * will not be called if the datasets drawing has been previously cancelled.
6943 * @param {Chart.Controller} chart - The chart instance.
6944 * @param {Number} easingValue - The current animation value, between 0.0 and 1.0.
6945 * @param {Object} options - The plugin options.
6946 */
6947/**
6948 * @method IPlugin#beforeDatasetDraw
6949 * @desc Called before drawing the `chart` dataset at the given `args.index` (datasets
6950 * are drawn in the reverse order). If any plugin returns `false`, the datasets drawing
6951 * is cancelled until another `render` is triggered.
6952 * @param {Chart} chart - The chart instance.
6953 * @param {Object} args - The call arguments.
6954 * @param {Number} args.index - The dataset index.
6955 * @param {Object} args.meta - The dataset metadata.
6956 * @param {Number} args.easingValue - The current animation value, between 0.0 and 1.0.
6957 * @param {Object} options - The plugin options.
6958 * @returns {Boolean} `false` to cancel the chart datasets drawing.
6959 */
6960/**
6961 * @method IPlugin#afterDatasetDraw
6962 * @desc Called after the `chart` datasets at the given `args.index` have been drawn
6963 * (datasets are drawn in the reverse order). Note that this hook will not be called
6964 * if the datasets drawing has been previously cancelled.
6965 * @param {Chart} chart - The chart instance.
6966 * @param {Object} args - The call arguments.
6967 * @param {Number} args.index - The dataset index.
6968 * @param {Object} args.meta - The dataset metadata.
6969 * @param {Number} args.easingValue - The current animation value, between 0.0 and 1.0.
6970 * @param {Object} options - The plugin options.
6971 */
6972/**
6973 * @method IPlugin#beforeTooltipDraw
6974 * @desc Called before drawing the `tooltip`. If any plugin returns `false`,
6975 * the tooltip drawing is cancelled until another `render` is triggered.
6976 * @param {Chart} chart - The chart instance.
6977 * @param {Object} args - The call arguments.
6978 * @param {Object} args.tooltip - The tooltip.
6979 * @param {Number} args.easingValue - The current animation value, between 0.0 and 1.0.
6980 * @param {Object} options - The plugin options.
6981 * @returns {Boolean} `false` to cancel the chart tooltip drawing.
6982 */
6983/**
6984 * @method IPlugin#afterTooltipDraw
6985 * @desc Called after drawing the `tooltip`. Note that this hook will not
6986 * be called if the tooltip drawing has been previously cancelled.
6987 * @param {Chart} chart - The chart instance.
6988 * @param {Object} args - The call arguments.
6989 * @param {Object} args.tooltip - The tooltip.
6990 * @param {Number} args.easingValue - The current animation value, between 0.0 and 1.0.
6991 * @param {Object} options - The plugin options.
6992 */
6993/**
6994 * @method IPlugin#beforeEvent
6995 * @desc Called before processing the specified `event`. If any plugin returns `false`,
6996 * the event will be discarded.
6997 * @param {Chart.Controller} chart - The chart instance.
6998 * @param {IEvent} event - The event object.
6999 * @param {Object} options - The plugin options.
7000 */
7001/**
7002 * @method IPlugin#afterEvent
7003 * @desc Called after the `event` has been consumed. Note that this hook
7004 * will not be called if the `event` has been previously discarded.
7005 * @param {Chart.Controller} chart - The chart instance.
7006 * @param {IEvent} event - The event object.
7007 * @param {Object} options - The plugin options.
7008 */
7009/**
7010 * @method IPlugin#resize
7011 * @desc Called after the chart as been resized.
7012 * @param {Chart.Controller} chart - The chart instance.
7013 * @param {Number} size - The new canvas display size (eq. canvas.style width & height).
7014 * @param {Object} options - The plugin options.
7015 */
7016/**
7017 * @method IPlugin#destroy
7018 * @desc Called after the chart as been destroyed.
7019 * @param {Chart.Controller} chart - The chart instance.
7020 * @param {Object} options - The plugin options.
7021 */
7022
7023},{"25":25,"45":45}],32:[function(require,module,exports){
7024'use strict';
7025
7026var defaults = require(25);
7027var Element = require(26);
7028var helpers = require(45);
7029var Ticks = require(34);
7030
7031defaults._set('scale', {
7032	display: true,
7033	position: 'left',
7034	offset: false,
7035
7036	// grid line settings
7037	gridLines: {
7038		display: true,
7039		color: 'rgba(0, 0, 0, 0.1)',
7040		lineWidth: 1,
7041		drawBorder: true,
7042		drawOnChartArea: true,
7043		drawTicks: true,
7044		tickMarkLength: 10,
7045		zeroLineWidth: 1,
7046		zeroLineColor: 'rgba(0,0,0,0.25)',
7047		zeroLineBorderDash: [],
7048		zeroLineBorderDashOffset: 0.0,
7049		offsetGridLines: false,
7050		borderDash: [],
7051		borderDashOffset: 0.0
7052	},
7053
7054	// scale label
7055	scaleLabel: {
7056		// display property
7057		display: false,
7058
7059		// actual label
7060		labelString: '',
7061
7062		// line height
7063		lineHeight: 1.2,
7064
7065		// top/bottom padding
7066		padding: {
7067			top: 4,
7068			bottom: 4
7069		}
7070	},
7071
7072	// label settings
7073	ticks: {
7074		beginAtZero: false,
7075		minRotation: 0,
7076		maxRotation: 50,
7077		mirror: false,
7078		padding: 0,
7079		reverse: false,
7080		display: true,
7081		autoSkip: true,
7082		autoSkipPadding: 0,
7083		labelOffset: 0,
7084		// We pass through arrays to be rendered as multiline labels, we convert Others to strings here.
7085		callback: Ticks.formatters.values,
7086		minor: {},
7087		major: {}
7088	}
7089});
7090
7091function labelsFromTicks(ticks) {
7092	var labels = [];
7093	var i, ilen;
7094
7095	for (i = 0, ilen = ticks.length; i < ilen; ++i) {
7096		labels.push(ticks[i].label);
7097	}
7098
7099	return labels;
7100}
7101
7102function getLineValue(scale, index, offsetGridLines) {
7103	var lineValue = scale.getPixelForTick(index);
7104
7105	if (offsetGridLines) {
7106		if (index === 0) {
7107			lineValue -= (scale.getPixelForTick(1) - lineValue) / 2;
7108		} else {
7109			lineValue -= (lineValue - scale.getPixelForTick(index - 1)) / 2;
7110		}
7111	}
7112	return lineValue;
7113}
7114
7115module.exports = function(Chart) {
7116
7117	function computeTextSize(context, tick, font) {
7118		return helpers.isArray(tick) ?
7119			helpers.longestText(context, font, tick) :
7120			context.measureText(tick).width;
7121	}
7122
7123	function parseFontOptions(options) {
7124		var valueOrDefault = helpers.valueOrDefault;
7125		var globalDefaults = defaults.global;
7126		var size = valueOrDefault(options.fontSize, globalDefaults.defaultFontSize);
7127		var style = valueOrDefault(options.fontStyle, globalDefaults.defaultFontStyle);
7128		var family = valueOrDefault(options.fontFamily, globalDefaults.defaultFontFamily);
7129
7130		return {
7131			size: size,
7132			style: style,
7133			family: family,
7134			font: helpers.fontString(size, style, family)
7135		};
7136	}
7137
7138	function parseLineHeight(options) {
7139		return helpers.options.toLineHeight(
7140			helpers.valueOrDefault(options.lineHeight, 1.2),
7141			helpers.valueOrDefault(options.fontSize, defaults.global.defaultFontSize));
7142	}
7143
7144	Chart.Scale = Element.extend({
7145		/**
7146		 * Get the padding needed for the scale
7147		 * @method getPadding
7148		 * @private
7149		 * @returns {Padding} the necessary padding
7150		 */
7151		getPadding: function() {
7152			var me = this;
7153			return {
7154				left: me.paddingLeft || 0,
7155				top: me.paddingTop || 0,
7156				right: me.paddingRight || 0,
7157				bottom: me.paddingBottom || 0
7158			};
7159		},
7160
7161		/**
7162		 * Returns the scale tick objects ({label, major})
7163		 * @since 2.7
7164		 */
7165		getTicks: function() {
7166			return this._ticks;
7167		},
7168
7169		// These methods are ordered by lifecyle. Utilities then follow.
7170		// Any function defined here is inherited by all scale types.
7171		// Any function can be extended by the scale type
7172
7173		mergeTicksOptions: function() {
7174			var ticks = this.options.ticks;
7175			if (ticks.minor === false) {
7176				ticks.minor = {
7177					display: false
7178				};
7179			}
7180			if (ticks.major === false) {
7181				ticks.major = {
7182					display: false
7183				};
7184			}
7185			for (var key in ticks) {
7186				if (key !== 'major' && key !== 'minor') {
7187					if (typeof ticks.minor[key] === 'undefined') {
7188						ticks.minor[key] = ticks[key];
7189					}
7190					if (typeof ticks.major[key] === 'undefined') {
7191						ticks.major[key] = ticks[key];
7192					}
7193				}
7194			}
7195		},
7196		beforeUpdate: function() {
7197			helpers.callback(this.options.beforeUpdate, [this]);
7198		},
7199		update: function(maxWidth, maxHeight, margins) {
7200			var me = this;
7201			var i, ilen, labels, label, ticks, tick;
7202
7203			// Update Lifecycle - Probably don't want to ever extend or overwrite this function ;)
7204			me.beforeUpdate();
7205
7206			// Absorb the master measurements
7207			me.maxWidth = maxWidth;
7208			me.maxHeight = maxHeight;
7209			me.margins = helpers.extend({
7210				left: 0,
7211				right: 0,
7212				top: 0,
7213				bottom: 0
7214			}, margins);
7215			me.longestTextCache = me.longestTextCache || {};
7216
7217			// Dimensions
7218			me.beforeSetDimensions();
7219			me.setDimensions();
7220			me.afterSetDimensions();
7221
7222			// Data min/max
7223			me.beforeDataLimits();
7224			me.determineDataLimits();
7225			me.afterDataLimits();
7226
7227			// Ticks - `this.ticks` is now DEPRECATED!
7228			// Internal ticks are now stored as objects in the PRIVATE `this._ticks` member
7229			// and must not be accessed directly from outside this class. `this.ticks` being
7230			// around for long time and not marked as private, we can't change its structure
7231			// without unexpected breaking changes. If you need to access the scale ticks,
7232			// use scale.getTicks() instead.
7233
7234			me.beforeBuildTicks();
7235
7236			// New implementations should return an array of objects but for BACKWARD COMPAT,
7237			// we still support no return (`this.ticks` internally set by calling this method).
7238			ticks = me.buildTicks() || [];
7239
7240			me.afterBuildTicks();
7241
7242			me.beforeTickToLabelConversion();
7243
7244			// New implementations should return the formatted tick labels but for BACKWARD
7245			// COMPAT, we still support no return (`this.ticks` internally changed by calling
7246			// this method and supposed to contain only string values).
7247			labels = me.convertTicksToLabels(ticks) || me.ticks;
7248
7249			me.afterTickToLabelConversion();
7250
7251			me.ticks = labels;   // BACKWARD COMPATIBILITY
7252
7253			// IMPORTANT: from this point, we consider that `this.ticks` will NEVER change!
7254
7255			// BACKWARD COMPAT: synchronize `_ticks` with labels (so potentially `this.ticks`)
7256			for (i = 0, ilen = labels.length; i < ilen; ++i) {
7257				label = labels[i];
7258				tick = ticks[i];
7259				if (!tick) {
7260					ticks.push(tick = {
7261						label: label,
7262						major: false
7263					});
7264				} else {
7265					tick.label = label;
7266				}
7267			}
7268
7269			me._ticks = ticks;
7270
7271			// Tick Rotation
7272			me.beforeCalculateTickRotation();
7273			me.calculateTickRotation();
7274			me.afterCalculateTickRotation();
7275			// Fit
7276			me.beforeFit();
7277			me.fit();
7278			me.afterFit();
7279			//
7280			me.afterUpdate();
7281
7282			return me.minSize;
7283
7284		},
7285		afterUpdate: function() {
7286			helpers.callback(this.options.afterUpdate, [this]);
7287		},
7288
7289		//
7290
7291		beforeSetDimensions: function() {
7292			helpers.callback(this.options.beforeSetDimensions, [this]);
7293		},
7294		setDimensions: function() {
7295			var me = this;
7296			// Set the unconstrained dimension before label rotation
7297			if (me.isHorizontal()) {
7298				// Reset position before calculating rotation
7299				me.width = me.maxWidth;
7300				me.left = 0;
7301				me.right = me.width;
7302			} else {
7303				me.height = me.maxHeight;
7304
7305				// Reset position before calculating rotation
7306				me.top = 0;
7307				me.bottom = me.height;
7308			}
7309
7310			// Reset padding
7311			me.paddingLeft = 0;
7312			me.paddingTop = 0;
7313			me.paddingRight = 0;
7314			me.paddingBottom = 0;
7315		},
7316		afterSetDimensions: function() {
7317			helpers.callback(this.options.afterSetDimensions, [this]);
7318		},
7319
7320		// Data limits
7321		beforeDataLimits: function() {
7322			helpers.callback(this.options.beforeDataLimits, [this]);
7323		},
7324		determineDataLimits: helpers.noop,
7325		afterDataLimits: function() {
7326			helpers.callback(this.options.afterDataLimits, [this]);
7327		},
7328
7329		//
7330		beforeBuildTicks: function() {
7331			helpers.callback(this.options.beforeBuildTicks, [this]);
7332		},
7333		buildTicks: helpers.noop,
7334		afterBuildTicks: function() {
7335			helpers.callback(this.options.afterBuildTicks, [this]);
7336		},
7337
7338		beforeTickToLabelConversion: function() {
7339			helpers.callback(this.options.beforeTickToLabelConversion, [this]);
7340		},
7341		convertTicksToLabels: function() {
7342			var me = this;
7343			// Convert ticks to strings
7344			var tickOpts = me.options.ticks;
7345			me.ticks = me.ticks.map(tickOpts.userCallback || tickOpts.callback, this);
7346		},
7347		afterTickToLabelConversion: function() {
7348			helpers.callback(this.options.afterTickToLabelConversion, [this]);
7349		},
7350
7351		//
7352
7353		beforeCalculateTickRotation: function() {
7354			helpers.callback(this.options.beforeCalculateTickRotation, [this]);
7355		},
7356		calculateTickRotation: function() {
7357			var me = this;
7358			var context = me.ctx;
7359			var tickOpts = me.options.ticks;
7360			var labels = labelsFromTicks(me._ticks);
7361
7362			// Get the width of each grid by calculating the difference
7363			// between x offsets between 0 and 1.
7364			var tickFont = parseFontOptions(tickOpts);
7365			context.font = tickFont.font;
7366
7367			var labelRotation = tickOpts.minRotation || 0;
7368
7369			if (labels.length && me.options.display && me.isHorizontal()) {
7370				var originalLabelWidth = helpers.longestText(context, tickFont.font, labels, me.longestTextCache);
7371				var labelWidth = originalLabelWidth;
7372				var cosRotation, sinRotation;
7373
7374				// Allow 3 pixels x2 padding either side for label readability
7375				var tickWidth = me.getPixelForTick(1) - me.getPixelForTick(0) - 6;
7376
7377				// Max label rotation can be set or default to 90 - also act as a loop counter
7378				while (labelWidth > tickWidth && labelRotation < tickOpts.maxRotation) {
7379					var angleRadians = helpers.toRadians(labelRotation);
7380					cosRotation = Math.cos(angleRadians);
7381					sinRotation = Math.sin(angleRadians);
7382
7383					if (sinRotation * originalLabelWidth > me.maxHeight) {
7384						// go back one step
7385						labelRotation--;
7386						break;
7387					}
7388
7389					labelRotation++;
7390					labelWidth = cosRotation * originalLabelWidth;
7391				}
7392			}
7393
7394			me.labelRotation = labelRotation;
7395		},
7396		afterCalculateTickRotation: function() {
7397			helpers.callback(this.options.afterCalculateTickRotation, [this]);
7398		},
7399
7400		//
7401
7402		beforeFit: function() {
7403			helpers.callback(this.options.beforeFit, [this]);
7404		},
7405		fit: function() {
7406			var me = this;
7407			// Reset
7408			var minSize = me.minSize = {
7409				width: 0,
7410				height: 0
7411			};
7412
7413			var labels = labelsFromTicks(me._ticks);
7414
7415			var opts = me.options;
7416			var tickOpts = opts.ticks;
7417			var scaleLabelOpts = opts.scaleLabel;
7418			var gridLineOpts = opts.gridLines;
7419			var display = opts.display;
7420			var isHorizontal = me.isHorizontal();
7421
7422			var tickFont = parseFontOptions(tickOpts);
7423			var tickMarkLength = opts.gridLines.tickMarkLength;
7424
7425			// Width
7426			if (isHorizontal) {
7427				// subtract the margins to line up with the chartArea if we are a full width scale
7428				minSize.width = me.isFullWidth() ? me.maxWidth - me.margins.left - me.margins.right : me.maxWidth;
7429			} else {
7430				minSize.width = display && gridLineOpts.drawTicks ? tickMarkLength : 0;
7431			}
7432
7433			// height
7434			if (isHorizontal) {
7435				minSize.height = display && gridLineOpts.drawTicks ? tickMarkLength : 0;
7436			} else {
7437				minSize.height = me.maxHeight; // fill all the height
7438			}
7439
7440			// Are we showing a title for the scale?
7441			if (scaleLabelOpts.display && display) {
7442				var scaleLabelLineHeight = parseLineHeight(scaleLabelOpts);
7443				var scaleLabelPadding = helpers.options.toPadding(scaleLabelOpts.padding);
7444				var deltaHeight = scaleLabelLineHeight + scaleLabelPadding.height;
7445
7446				if (isHorizontal) {
7447					minSize.height += deltaHeight;
7448				} else {
7449					minSize.width += deltaHeight;
7450				}
7451			}
7452
7453			// Don't bother fitting the ticks if we are not showing them
7454			if (tickOpts.display && display) {
7455				var largestTextWidth = helpers.longestText(me.ctx, tickFont.font, labels, me.longestTextCache);
7456				var tallestLabelHeightInLines = helpers.numberOfLabelLines(labels);
7457				var lineSpace = tickFont.size * 0.5;
7458				var tickPadding = me.options.ticks.padding;
7459
7460				if (isHorizontal) {
7461					// A horizontal axis is more constrained by the height.
7462					me.longestLabelWidth = largestTextWidth;
7463
7464					var angleRadians = helpers.toRadians(me.labelRotation);
7465					var cosRotation = Math.cos(angleRadians);
7466					var sinRotation = Math.sin(angleRadians);
7467
7468					// TODO - improve this calculation
7469					var labelHeight = (sinRotation * largestTextWidth)
7470						+ (tickFont.size * tallestLabelHeightInLines)
7471						+ (lineSpace * (tallestLabelHeightInLines - 1))
7472						+ lineSpace; // padding
7473
7474					minSize.height = Math.min(me.maxHeight, minSize.height + labelHeight + tickPadding);
7475
7476					me.ctx.font = tickFont.font;
7477					var firstLabelWidth = computeTextSize(me.ctx, labels[0], tickFont.font);
7478					var lastLabelWidth = computeTextSize(me.ctx, labels[labels.length - 1], tickFont.font);
7479
7480					// Ensure that our ticks are always inside the canvas. When rotated, ticks are right aligned
7481					// which means that the right padding is dominated by the font height
7482					if (me.labelRotation !== 0) {
7483						me.paddingLeft = opts.position === 'bottom' ? (cosRotation * firstLabelWidth) + 3 : (cosRotation * lineSpace) + 3; // add 3 px to move away from canvas edges
7484						me.paddingRight = opts.position === 'bottom' ? (cosRotation * lineSpace) + 3 : (cosRotation * lastLabelWidth) + 3;
7485					} else {
7486						me.paddingLeft = firstLabelWidth / 2 + 3; // add 3 px to move away from canvas edges
7487						me.paddingRight = lastLabelWidth / 2 + 3;
7488					}
7489				} else {
7490					// A vertical axis is more constrained by the width. Labels are the
7491					// dominant factor here, so get that length first and account for padding
7492					if (tickOpts.mirror) {
7493						largestTextWidth = 0;
7494					} else {
7495						// use lineSpace for consistency with horizontal axis
7496						// tickPadding is not implemented for horizontal
7497						largestTextWidth += tickPadding + lineSpace;
7498					}
7499
7500					minSize.width = Math.min(me.maxWidth, minSize.width + largestTextWidth);
7501
7502					me.paddingTop = tickFont.size / 2;
7503					me.paddingBottom = tickFont.size / 2;
7504				}
7505			}
7506
7507			me.handleMargins();
7508
7509			me.width = minSize.width;
7510			me.height = minSize.height;
7511		},
7512
7513		/**
7514		 * Handle margins and padding interactions
7515		 * @private
7516		 */
7517		handleMargins: function() {
7518			var me = this;
7519			if (me.margins) {
7520				me.paddingLeft = Math.max(me.paddingLeft - me.margins.left, 0);
7521				me.paddingTop = Math.max(me.paddingTop - me.margins.top, 0);
7522				me.paddingRight = Math.max(me.paddingRight - me.margins.right, 0);
7523				me.paddingBottom = Math.max(me.paddingBottom - me.margins.bottom, 0);
7524			}
7525		},
7526
7527		afterFit: function() {
7528			helpers.callback(this.options.afterFit, [this]);
7529		},
7530
7531		// Shared Methods
7532		isHorizontal: function() {
7533			return this.options.position === 'top' || this.options.position === 'bottom';
7534		},
7535		isFullWidth: function() {
7536			return (this.options.fullWidth);
7537		},
7538
7539		// 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
7540		getRightValue: function(rawValue) {
7541			// Null and undefined values first
7542			if (helpers.isNullOrUndef(rawValue)) {
7543				return NaN;
7544			}
7545			// isNaN(object) returns true, so make sure NaN is checking for a number; Discard Infinite values
7546			if (typeof rawValue === 'number' && !isFinite(rawValue)) {
7547				return NaN;
7548			}
7549			// If it is in fact an object, dive in one more level
7550			if (rawValue) {
7551				if (this.isHorizontal()) {
7552					if (rawValue.x !== undefined) {
7553						return this.getRightValue(rawValue.x);
7554					}
7555				} else if (rawValue.y !== undefined) {
7556					return this.getRightValue(rawValue.y);
7557				}
7558			}
7559
7560			// Value is good, return it
7561			return rawValue;
7562		},
7563
7564		/**
7565		 * Used to get the value to display in the tooltip for the data at the given index
7566		 * @param index
7567		 * @param datasetIndex
7568		 */
7569		getLabelForIndex: helpers.noop,
7570
7571		/**
7572		 * Returns the location of the given data point. Value can either be an index or a numerical value
7573		 * The coordinate (0, 0) is at the upper-left corner of the canvas
7574		 * @param value
7575		 * @param index
7576		 * @param datasetIndex
7577		 */
7578		getPixelForValue: helpers.noop,
7579
7580		/**
7581		 * Used to get the data value from a given pixel. This is the inverse of getPixelForValue
7582		 * The coordinate (0, 0) is at the upper-left corner of the canvas
7583		 * @param pixel
7584		 */
7585		getValueForPixel: helpers.noop,
7586
7587		/**
7588		 * Returns the location of the tick at the given index
7589		 * The coordinate (0, 0) is at the upper-left corner of the canvas
7590		 */
7591		getPixelForTick: function(index) {
7592			var me = this;
7593			var offset = me.options.offset;
7594			if (me.isHorizontal()) {
7595				var innerWidth = me.width - (me.paddingLeft + me.paddingRight);
7596				var tickWidth = innerWidth / Math.max((me._ticks.length - (offset ? 0 : 1)), 1);
7597				var pixel = (tickWidth * index) + me.paddingLeft;
7598
7599				if (offset) {
7600					pixel += tickWidth / 2;
7601				}
7602
7603				var finalVal = me.left + Math.round(pixel);
7604				finalVal += me.isFullWidth() ? me.margins.left : 0;
7605				return finalVal;
7606			}
7607			var innerHeight = me.height - (me.paddingTop + me.paddingBottom);
7608			return me.top + (index * (innerHeight / (me._ticks.length - 1)));
7609		},
7610
7611		/**
7612		 * Utility for getting the pixel location of a percentage of scale
7613		 * The coordinate (0, 0) is at the upper-left corner of the canvas
7614		 */
7615		getPixelForDecimal: function(decimal) {
7616			var me = this;
7617			if (me.isHorizontal()) {
7618				var innerWidth = me.width - (me.paddingLeft + me.paddingRight);
7619				var valueOffset = (innerWidth * decimal) + me.paddingLeft;
7620
7621				var finalVal = me.left + Math.round(valueOffset);
7622				finalVal += me.isFullWidth() ? me.margins.left : 0;
7623				return finalVal;
7624			}
7625			return me.top + (decimal * me.height);
7626		},
7627
7628		/**
7629		 * Returns the pixel for the minimum chart value
7630		 * The coordinate (0, 0) is at the upper-left corner of the canvas
7631		 */
7632		getBasePixel: function() {
7633			return this.getPixelForValue(this.getBaseValue());
7634		},
7635
7636		getBaseValue: function() {
7637			var me = this;
7638			var min = me.min;
7639			var max = me.max;
7640
7641			return me.beginAtZero ? 0 :
7642				min < 0 && max < 0 ? max :
7643				min > 0 && max > 0 ? min :
7644				0;
7645		},
7646
7647		/**
7648		 * Returns a subset of ticks to be plotted to avoid overlapping labels.
7649		 * @private
7650		 */
7651		_autoSkip: function(ticks) {
7652			var skipRatio;
7653			var me = this;
7654			var isHorizontal = me.isHorizontal();
7655			var optionTicks = me.options.ticks.minor;
7656			var tickCount = ticks.length;
7657			var labelRotationRadians = helpers.toRadians(me.labelRotation);
7658			var cosRotation = Math.cos(labelRotationRadians);
7659			var longestRotatedLabel = me.longestLabelWidth * cosRotation;
7660			var result = [];
7661			var i, tick, shouldSkip;
7662
7663			// figure out the maximum number of gridlines to show
7664			var maxTicks;
7665			if (optionTicks.maxTicksLimit) {
7666				maxTicks = optionTicks.maxTicksLimit;
7667			}
7668
7669			if (isHorizontal) {
7670				skipRatio = false;
7671
7672				if ((longestRotatedLabel + optionTicks.autoSkipPadding) * tickCount > (me.width - (me.paddingLeft + me.paddingRight))) {
7673					skipRatio = 1 + Math.floor(((longestRotatedLabel + optionTicks.autoSkipPadding) * tickCount) / (me.width - (me.paddingLeft + me.paddingRight)));
7674				}
7675
7676				// if they defined a max number of optionTicks,
7677				// increase skipRatio until that number is met
7678				if (maxTicks && tickCount > maxTicks) {
7679					skipRatio = Math.max(skipRatio, Math.floor(tickCount / maxTicks));
7680				}
7681			}
7682
7683			for (i = 0; i < tickCount; i++) {
7684				tick = ticks[i];
7685
7686				// Since we always show the last tick,we need may need to hide the last shown one before
7687				shouldSkip = (skipRatio > 1 && i % skipRatio > 0) || (i % skipRatio === 0 && i + skipRatio >= tickCount);
7688				if (shouldSkip && i !== tickCount - 1) {
7689					// leave tick in place but make sure it's not displayed (#4635)
7690					delete tick.label;
7691				}
7692				result.push(tick);
7693			}
7694			return result;
7695		},
7696
7697		// Actually draw the scale on the canvas
7698		// @param {rectangle} chartArea : the area of the chart to draw full grid lines on
7699		draw: function(chartArea) {
7700			var me = this;
7701			var options = me.options;
7702			if (!options.display) {
7703				return;
7704			}
7705
7706			var context = me.ctx;
7707			var globalDefaults = defaults.global;
7708			var optionTicks = options.ticks.minor;
7709			var optionMajorTicks = options.ticks.major || optionTicks;
7710			var gridLines = options.gridLines;
7711			var scaleLabel = options.scaleLabel;
7712
7713			var isRotated = me.labelRotation !== 0;
7714			var isHorizontal = me.isHorizontal();
7715
7716			var ticks = optionTicks.autoSkip ? me._autoSkip(me.getTicks()) : me.getTicks();
7717			var tickFontColor = helpers.valueOrDefault(optionTicks.fontColor, globalDefaults.defaultFontColor);
7718			var tickFont = parseFontOptions(optionTicks);
7719			var majorTickFontColor = helpers.valueOrDefault(optionMajorTicks.fontColor, globalDefaults.defaultFontColor);
7720			var majorTickFont = parseFontOptions(optionMajorTicks);
7721
7722			var tl = gridLines.drawTicks ? gridLines.tickMarkLength : 0;
7723
7724			var scaleLabelFontColor = helpers.valueOrDefault(scaleLabel.fontColor, globalDefaults.defaultFontColor);
7725			var scaleLabelFont = parseFontOptions(scaleLabel);
7726			var scaleLabelPadding = helpers.options.toPadding(scaleLabel.padding);
7727			var labelRotationRadians = helpers.toRadians(me.labelRotation);
7728
7729			var itemsToDraw = [];
7730
7731			var xTickStart = options.position === 'right' ? me.left : me.right - tl;
7732			var xTickEnd = options.position === 'right' ? me.left + tl : me.right;
7733			var yTickStart = options.position === 'bottom' ? me.top : me.bottom - tl;
7734			var yTickEnd = options.position === 'bottom' ? me.top + tl : me.bottom;
7735
7736			helpers.each(ticks, function(tick, index) {
7737				// autoskipper skipped this tick (#4635)
7738				if (helpers.isNullOrUndef(tick.label)) {
7739					return;
7740				}
7741
7742				var label = tick.label;
7743				var lineWidth, lineColor, borderDash, borderDashOffset;
7744				if (index === me.zeroLineIndex && options.offset === gridLines.offsetGridLines) {
7745					// Draw the first index specially
7746					lineWidth = gridLines.zeroLineWidth;
7747					lineColor = gridLines.zeroLineColor;
7748					borderDash = gridLines.zeroLineBorderDash;
7749					borderDashOffset = gridLines.zeroLineBorderDashOffset;
7750				} else {
7751					lineWidth = helpers.valueAtIndexOrDefault(gridLines.lineWidth, index);
7752					lineColor = helpers.valueAtIndexOrDefault(gridLines.color, index);
7753					borderDash = helpers.valueOrDefault(gridLines.borderDash, globalDefaults.borderDash);
7754					borderDashOffset = helpers.valueOrDefault(gridLines.borderDashOffset, globalDefaults.borderDashOffset);
7755				}
7756
7757				// Common properties
7758				var tx1, ty1, tx2, ty2, x1, y1, x2, y2, labelX, labelY;
7759				var textAlign = 'middle';
7760				var textBaseline = 'middle';
7761				var tickPadding = optionTicks.padding;
7762
7763				if (isHorizontal) {
7764					var labelYOffset = tl + tickPadding;
7765
7766					if (options.position === 'bottom') {
7767						// bottom
7768						textBaseline = !isRotated ? 'top' : 'middle';
7769						textAlign = !isRotated ? 'center' : 'right';
7770						labelY = me.top + labelYOffset;
7771					} else {
7772						// top
7773						textBaseline = !isRotated ? 'bottom' : 'middle';
7774						textAlign = !isRotated ? 'center' : 'left';
7775						labelY = me.bottom - labelYOffset;
7776					}
7777
7778					var xLineValue = getLineValue(me, index, gridLines.offsetGridLines && ticks.length > 1);
7779					if (xLineValue < me.left) {
7780						lineColor = 'rgba(0,0,0,0)';
7781					}
7782					xLineValue += helpers.aliasPixel(lineWidth);
7783
7784					labelX = me.getPixelForTick(index) + optionTicks.labelOffset; // x values for optionTicks (need to consider offsetLabel option)
7785
7786					tx1 = tx2 = x1 = x2 = xLineValue;
7787					ty1 = yTickStart;
7788					ty2 = yTickEnd;
7789					y1 = chartArea.top;
7790					y2 = chartArea.bottom;
7791				} else {
7792					var isLeft = options.position === 'left';
7793					var labelXOffset;
7794
7795					if (optionTicks.mirror) {
7796						textAlign = isLeft ? 'left' : 'right';
7797						labelXOffset = tickPadding;
7798					} else {
7799						textAlign = isLeft ? 'right' : 'left';
7800						labelXOffset = tl + tickPadding;
7801					}
7802
7803					labelX = isLeft ? me.right - labelXOffset : me.left + labelXOffset;
7804
7805					var yLineValue = getLineValue(me, index, gridLines.offsetGridLines && ticks.length > 1);
7806					if (yLineValue < me.top) {
7807						lineColor = 'rgba(0,0,0,0)';
7808					}
7809					yLineValue += helpers.aliasPixel(lineWidth);
7810
7811					labelY = me.getPixelForTick(index) + optionTicks.labelOffset;
7812
7813					tx1 = xTickStart;
7814					tx2 = xTickEnd;
7815					x1 = chartArea.left;
7816					x2 = chartArea.right;
7817					ty1 = ty2 = y1 = y2 = yLineValue;
7818				}
7819
7820				itemsToDraw.push({
7821					tx1: tx1,
7822					ty1: ty1,
7823					tx2: tx2,
7824					ty2: ty2,
7825					x1: x1,
7826					y1: y1,
7827					x2: x2,
7828					y2: y2,
7829					labelX: labelX,
7830					labelY: labelY,
7831					glWidth: lineWidth,
7832					glColor: lineColor,
7833					glBorderDash: borderDash,
7834					glBorderDashOffset: borderDashOffset,
7835					rotation: -1 * labelRotationRadians,
7836					label: label,
7837					major: tick.major,
7838					textBaseline: textBaseline,
7839					textAlign: textAlign
7840				});
7841			});
7842
7843			// Draw all of the tick labels, tick marks, and grid lines at the correct places
7844			helpers.each(itemsToDraw, function(itemToDraw) {
7845				if (gridLines.display) {
7846					context.save();
7847					context.lineWidth = itemToDraw.glWidth;
7848					context.strokeStyle = itemToDraw.glColor;
7849					if (context.setLineDash) {
7850						context.setLineDash(itemToDraw.glBorderDash);
7851						context.lineDashOffset = itemToDraw.glBorderDashOffset;
7852					}
7853
7854					context.beginPath();
7855
7856					if (gridLines.drawTicks) {
7857						context.moveTo(itemToDraw.tx1, itemToDraw.ty1);
7858						context.lineTo(itemToDraw.tx2, itemToDraw.ty2);
7859					}
7860
7861					if (gridLines.drawOnChartArea) {
7862						context.moveTo(itemToDraw.x1, itemToDraw.y1);
7863						context.lineTo(itemToDraw.x2, itemToDraw.y2);
7864					}
7865
7866					context.stroke();
7867					context.restore();
7868				}
7869
7870				if (optionTicks.display) {
7871					// Make sure we draw text in the correct color and font
7872					context.save();
7873					context.translate(itemToDraw.labelX, itemToDraw.labelY);
7874					context.rotate(itemToDraw.rotation);
7875					context.font = itemToDraw.major ? majorTickFont.font : tickFont.font;
7876					context.fillStyle = itemToDraw.major ? majorTickFontColor : tickFontColor;
7877					context.textBaseline = itemToDraw.textBaseline;
7878					context.textAlign = itemToDraw.textAlign;
7879
7880					var label = itemToDraw.label;
7881					if (helpers.isArray(label)) {
7882						for (var i = 0, y = 0; i < label.length; ++i) {
7883							// We just make sure the multiline element is a string here..
7884							context.fillText('' + label[i], 0, y);
7885							// apply same lineSpacing as calculated @ L#320
7886							y += (tickFont.size * 1.5);
7887						}
7888					} else {
7889						context.fillText(label, 0, 0);
7890					}
7891					context.restore();
7892				}
7893			});
7894
7895			if (scaleLabel.display) {
7896				// Draw the scale label
7897				var scaleLabelX;
7898				var scaleLabelY;
7899				var rotation = 0;
7900				var halfLineHeight = parseLineHeight(scaleLabel) / 2;
7901
7902				if (isHorizontal) {
7903					scaleLabelX = me.left + ((me.right - me.left) / 2); // midpoint of the width
7904					scaleLabelY = options.position === 'bottom'
7905						? me.bottom - halfLineHeight - scaleLabelPadding.bottom
7906						: me.top + halfLineHeight + scaleLabelPadding.top;
7907				} else {
7908					var isLeft = options.position === 'left';
7909					scaleLabelX = isLeft
7910						? me.left + halfLineHeight + scaleLabelPadding.top
7911						: me.right - halfLineHeight - scaleLabelPadding.top;
7912					scaleLabelY = me.top + ((me.bottom - me.top) / 2);
7913					rotation = isLeft ? -0.5 * Math.PI : 0.5 * Math.PI;
7914				}
7915
7916				context.save();
7917				context.translate(scaleLabelX, scaleLabelY);
7918				context.rotate(rotation);
7919				context.textAlign = 'center';
7920				context.textBaseline = 'middle';
7921				context.fillStyle = scaleLabelFontColor; // render in correct colour
7922				context.font = scaleLabelFont.font;
7923				context.fillText(scaleLabel.labelString, 0, 0);
7924				context.restore();
7925			}
7926
7927			if (gridLines.drawBorder) {
7928				// Draw the line at the edge of the axis
7929				context.lineWidth = helpers.valueAtIndexOrDefault(gridLines.lineWidth, 0);
7930				context.strokeStyle = helpers.valueAtIndexOrDefault(gridLines.color, 0);
7931				var x1 = me.left;
7932				var x2 = me.right;
7933				var y1 = me.top;
7934				var y2 = me.bottom;
7935
7936				var aliasPixel = helpers.aliasPixel(context.lineWidth);
7937				if (isHorizontal) {
7938					y1 = y2 = options.position === 'top' ? me.bottom : me.top;
7939					y1 += aliasPixel;
7940					y2 += aliasPixel;
7941				} else {
7942					x1 = x2 = options.position === 'left' ? me.right : me.left;
7943					x1 += aliasPixel;
7944					x2 += aliasPixel;
7945				}
7946
7947				context.beginPath();
7948				context.moveTo(x1, y1);
7949				context.lineTo(x2, y2);
7950				context.stroke();
7951			}
7952		}
7953	});
7954};
7955
7956},{"25":25,"26":26,"34":34,"45":45}],33:[function(require,module,exports){
7957'use strict';
7958
7959var defaults = require(25);
7960var helpers = require(45);
7961var layouts = require(30);
7962
7963module.exports = function(Chart) {
7964
7965	Chart.scaleService = {
7966		// Scale registration object. Extensions can register new scale types (such as log or DB scales) and then
7967		// use the new chart options to grab the correct scale
7968		constructors: {},
7969		// Use a registration function so that we can move to an ES6 map when we no longer need to support
7970		// old browsers
7971
7972		// Scale config defaults
7973		defaults: {},
7974		registerScaleType: function(type, scaleConstructor, scaleDefaults) {
7975			this.constructors[type] = scaleConstructor;
7976			this.defaults[type] = helpers.clone(scaleDefaults);
7977		},
7978		getScaleConstructor: function(type) {
7979			return this.constructors.hasOwnProperty(type) ? this.constructors[type] : undefined;
7980		},
7981		getScaleDefaults: function(type) {
7982			// Return the scale defaults merged with the global settings so that we always use the latest ones
7983			return this.defaults.hasOwnProperty(type) ? helpers.merge({}, [defaults.scale, this.defaults[type]]) : {};
7984		},
7985		updateScaleDefaults: function(type, additions) {
7986			var me = this;
7987			if (me.defaults.hasOwnProperty(type)) {
7988				me.defaults[type] = helpers.extend(me.defaults[type], additions);
7989			}
7990		},
7991		addScalesToLayout: function(chart) {
7992			// Adds each scale to the chart.boxes array to be sized accordingly
7993			helpers.each(chart.scales, function(scale) {
7994				// Set ILayoutItem parameters for backwards compatibility
7995				scale.fullWidth = scale.options.fullWidth;
7996				scale.position = scale.options.position;
7997				scale.weight = scale.options.weight;
7998				layouts.addBox(chart, scale);
7999			});
8000		}
8001	};
8002};
8003
8004},{"25":25,"30":30,"45":45}],34:[function(require,module,exports){
8005'use strict';
8006
8007var helpers = require(45);
8008
8009/**
8010 * Namespace to hold static tick generation functions
8011 * @namespace Chart.Ticks
8012 */
8013module.exports = {
8014	/**
8015	 * Namespace to hold formatters for different types of ticks
8016	 * @namespace Chart.Ticks.formatters
8017	 */
8018	formatters: {
8019		/**
8020		 * Formatter for value labels
8021		 * @method Chart.Ticks.formatters.values
8022		 * @param value the value to display
8023		 * @return {String|Array} the label to display
8024		 */
8025		values: function(value) {
8026			return helpers.isArray(value) ? value : '' + value;
8027		},
8028
8029		/**
8030		 * Formatter for linear numeric ticks
8031		 * @method Chart.Ticks.formatters.linear
8032		 * @param tickValue {Number} the value to be formatted
8033		 * @param index {Number} the position of the tickValue parameter in the ticks array
8034		 * @param ticks {Array<Number>} the list of ticks being converted
8035		 * @return {String} string representation of the tickValue parameter
8036		 */
8037		linear: function(tickValue, index, ticks) {
8038			// If we have lots of ticks, don't use the ones
8039			var delta = ticks.length > 3 ? ticks[2] - ticks[1] : ticks[1] - ticks[0];
8040
8041			// If we have a number like 2.5 as the delta, figure out how many decimal places we need
8042			if (Math.abs(delta) > 1) {
8043				if (tickValue !== Math.floor(tickValue)) {
8044					// not an integer
8045					delta = tickValue - Math.floor(tickValue);
8046				}
8047			}
8048
8049			var logDelta = helpers.log10(Math.abs(delta));
8050			var tickString = '';
8051
8052			if (tickValue !== 0) {
8053				var numDecimal = -1 * Math.floor(logDelta);
8054				numDecimal = Math.max(Math.min(numDecimal, 20), 0); // toFixed has a max of 20 decimal places
8055				tickString = tickValue.toFixed(numDecimal);
8056			} else {
8057				tickString = '0'; // never show decimal places for 0
8058			}
8059
8060			return tickString;
8061		},
8062
8063		logarithmic: function(tickValue, index, ticks) {
8064			var remain = tickValue / (Math.pow(10, Math.floor(helpers.log10(tickValue))));
8065
8066			if (tickValue === 0) {
8067				return '0';
8068			} else if (remain === 1 || remain === 2 || remain === 5 || index === 0 || index === ticks.length - 1) {
8069				return tickValue.toExponential();
8070			}
8071			return '';
8072		}
8073	}
8074};
8075
8076},{"45":45}],35:[function(require,module,exports){
8077'use strict';
8078
8079var defaults = require(25);
8080var Element = require(26);
8081var helpers = require(45);
8082
8083defaults._set('global', {
8084	tooltips: {
8085		enabled: true,
8086		custom: null,
8087		mode: 'nearest',
8088		position: 'average',
8089		intersect: true,
8090		backgroundColor: 'rgba(0,0,0,0.8)',
8091		titleFontStyle: 'bold',
8092		titleSpacing: 2,
8093		titleMarginBottom: 6,
8094		titleFontColor: '#fff',
8095		titleAlign: 'left',
8096		bodySpacing: 2,
8097		bodyFontColor: '#fff',
8098		bodyAlign: 'left',
8099		footerFontStyle: 'bold',
8100		footerSpacing: 2,
8101		footerMarginTop: 6,
8102		footerFontColor: '#fff',
8103		footerAlign: 'left',
8104		yPadding: 6,
8105		xPadding: 6,
8106		caretPadding: 2,
8107		caretSize: 5,
8108		cornerRadius: 6,
8109		multiKeyBackground: '#fff',
8110		displayColors: true,
8111		borderColor: 'rgba(0,0,0,0)',
8112		borderWidth: 0,
8113		callbacks: {
8114			// Args are: (tooltipItems, data)
8115			beforeTitle: helpers.noop,
8116			title: function(tooltipItems, data) {
8117				// Pick first xLabel for now
8118				var title = '';
8119				var labels = data.labels;
8120				var labelCount = labels ? labels.length : 0;
8121
8122				if (tooltipItems.length > 0) {
8123					var item = tooltipItems[0];
8124
8125					if (item.xLabel) {
8126						title = item.xLabel;
8127					} else if (labelCount > 0 && item.index < labelCount) {
8128						title = labels[item.index];
8129					}
8130				}
8131
8132				return title;
8133			},
8134			afterTitle: helpers.noop,
8135
8136			// Args are: (tooltipItems, data)
8137			beforeBody: helpers.noop,
8138
8139			// Args are: (tooltipItem, data)
8140			beforeLabel: helpers.noop,
8141			label: function(tooltipItem, data) {
8142				var label = data.datasets[tooltipItem.datasetIndex].label || '';
8143
8144				if (label) {
8145					label += ': ';
8146				}
8147				label += tooltipItem.yLabel;
8148				return label;
8149			},
8150			labelColor: function(tooltipItem, chart) {
8151				var meta = chart.getDatasetMeta(tooltipItem.datasetIndex);
8152				var activeElement = meta.data[tooltipItem.index];
8153				var view = activeElement._view;
8154				return {
8155					borderColor: view.borderColor,
8156					backgroundColor: view.backgroundColor
8157				};
8158			},
8159			labelTextColor: function() {
8160				return this._options.bodyFontColor;
8161			},
8162			afterLabel: helpers.noop,
8163
8164			// Args are: (tooltipItems, data)
8165			afterBody: helpers.noop,
8166
8167			// Args are: (tooltipItems, data)
8168			beforeFooter: helpers.noop,
8169			footer: helpers.noop,
8170			afterFooter: helpers.noop
8171		}
8172	}
8173});
8174
8175module.exports = function(Chart) {
8176
8177	/**
8178 	 * Helper method to merge the opacity into a color
8179 	 */
8180	function mergeOpacity(colorString, opacity) {
8181		var color = helpers.color(colorString);
8182		return color.alpha(opacity * color.alpha()).rgbaString();
8183	}
8184
8185	// Helper to push or concat based on if the 2nd parameter is an array or not
8186	function pushOrConcat(base, toPush) {
8187		if (toPush) {
8188			if (helpers.isArray(toPush)) {
8189				// base = base.concat(toPush);
8190				Array.prototype.push.apply(base, toPush);
8191			} else {
8192				base.push(toPush);
8193			}
8194		}
8195
8196		return base;
8197	}
8198
8199	// Private helper to create a tooltip item model
8200	// @param element : the chart element (point, arc, bar) to create the tooltip item for
8201	// @return : new tooltip item
8202	function createTooltipItem(element) {
8203		var xScale = element._xScale;
8204		var yScale = element._yScale || element._scale; // handle radar || polarArea charts
8205		var index = element._index;
8206		var datasetIndex = element._datasetIndex;
8207
8208		return {
8209			xLabel: xScale ? xScale.getLabelForIndex(index, datasetIndex) : '',
8210			yLabel: yScale ? yScale.getLabelForIndex(index, datasetIndex) : '',
8211			index: index,
8212			datasetIndex: datasetIndex,
8213			x: element._model.x,
8214			y: element._model.y
8215		};
8216	}
8217
8218	/**
8219	 * Helper to get the reset model for the tooltip
8220	 * @param tooltipOpts {Object} the tooltip options
8221	 */
8222	function getBaseModel(tooltipOpts) {
8223		var globalDefaults = defaults.global;
8224		var valueOrDefault = helpers.valueOrDefault;
8225
8226		return {
8227			// Positioning
8228			xPadding: tooltipOpts.xPadding,
8229			yPadding: tooltipOpts.yPadding,
8230			xAlign: tooltipOpts.xAlign,
8231			yAlign: tooltipOpts.yAlign,
8232
8233			// Body
8234			bodyFontColor: tooltipOpts.bodyFontColor,
8235			_bodyFontFamily: valueOrDefault(tooltipOpts.bodyFontFamily, globalDefaults.defaultFontFamily),
8236			_bodyFontStyle: valueOrDefault(tooltipOpts.bodyFontStyle, globalDefaults.defaultFontStyle),
8237			_bodyAlign: tooltipOpts.bodyAlign,
8238			bodyFontSize: valueOrDefault(tooltipOpts.bodyFontSize, globalDefaults.defaultFontSize),
8239			bodySpacing: tooltipOpts.bodySpacing,
8240
8241			// Title
8242			titleFontColor: tooltipOpts.titleFontColor,
8243			_titleFontFamily: valueOrDefault(tooltipOpts.titleFontFamily, globalDefaults.defaultFontFamily),
8244			_titleFontStyle: valueOrDefault(tooltipOpts.titleFontStyle, globalDefaults.defaultFontStyle),
8245			titleFontSize: valueOrDefault(tooltipOpts.titleFontSize, globalDefaults.defaultFontSize),
8246			_titleAlign: tooltipOpts.titleAlign,
8247			titleSpacing: tooltipOpts.titleSpacing,
8248			titleMarginBottom: tooltipOpts.titleMarginBottom,
8249
8250			// Footer
8251			footerFontColor: tooltipOpts.footerFontColor,
8252			_footerFontFamily: valueOrDefault(tooltipOpts.footerFontFamily, globalDefaults.defaultFontFamily),
8253			_footerFontStyle: valueOrDefault(tooltipOpts.footerFontStyle, globalDefaults.defaultFontStyle),
8254			footerFontSize: valueOrDefault(tooltipOpts.footerFontSize, globalDefaults.defaultFontSize),
8255			_footerAlign: tooltipOpts.footerAlign,
8256			footerSpacing: tooltipOpts.footerSpacing,
8257			footerMarginTop: tooltipOpts.footerMarginTop,
8258
8259			// Appearance
8260			caretSize: tooltipOpts.caretSize,
8261			cornerRadius: tooltipOpts.cornerRadius,
8262			backgroundColor: tooltipOpts.backgroundColor,
8263			opacity: 0,
8264			legendColorBackground: tooltipOpts.multiKeyBackground,
8265			displayColors: tooltipOpts.displayColors,
8266			borderColor: tooltipOpts.borderColor,
8267			borderWidth: tooltipOpts.borderWidth
8268		};
8269	}
8270
8271	/**
8272	 * Get the size of the tooltip
8273	 */
8274	function getTooltipSize(tooltip, model) {
8275		var ctx = tooltip._chart.ctx;
8276
8277		var height = model.yPadding * 2; // Tooltip Padding
8278		var width = 0;
8279
8280		// Count of all lines in the body
8281		var body = model.body;
8282		var combinedBodyLength = body.reduce(function(count, bodyItem) {
8283			return count + bodyItem.before.length + bodyItem.lines.length + bodyItem.after.length;
8284		}, 0);
8285		combinedBodyLength += model.beforeBody.length + model.afterBody.length;
8286
8287		var titleLineCount = model.title.length;
8288		var footerLineCount = model.footer.length;
8289		var titleFontSize = model.titleFontSize;
8290		var bodyFontSize = model.bodyFontSize;
8291		var footerFontSize = model.footerFontSize;
8292
8293		height += titleLineCount * titleFontSize; // Title Lines
8294		height += titleLineCount ? (titleLineCount - 1) * model.titleSpacing : 0; // Title Line Spacing
8295		height += titleLineCount ? model.titleMarginBottom : 0; // Title's bottom Margin
8296		height += combinedBodyLength * bodyFontSize; // Body Lines
8297		height += combinedBodyLength ? (combinedBodyLength - 1) * model.bodySpacing : 0; // Body Line Spacing
8298		height += footerLineCount ? model.footerMarginTop : 0; // Footer Margin
8299		height += footerLineCount * (footerFontSize); // Footer Lines
8300		height += footerLineCount ? (footerLineCount - 1) * model.footerSpacing : 0; // Footer Line Spacing
8301
8302		// Title width
8303		var widthPadding = 0;
8304		var maxLineWidth = function(line) {
8305			width = Math.max(width, ctx.measureText(line).width + widthPadding);
8306		};
8307
8308		ctx.font = helpers.fontString(titleFontSize, model._titleFontStyle, model._titleFontFamily);
8309		helpers.each(model.title, maxLineWidth);
8310
8311		// Body width
8312		ctx.font = helpers.fontString(bodyFontSize, model._bodyFontStyle, model._bodyFontFamily);
8313		helpers.each(model.beforeBody.concat(model.afterBody), maxLineWidth);
8314
8315		// Body lines may include some extra width due to the color box
8316		widthPadding = model.displayColors ? (bodyFontSize + 2) : 0;
8317		helpers.each(body, function(bodyItem) {
8318			helpers.each(bodyItem.before, maxLineWidth);
8319			helpers.each(bodyItem.lines, maxLineWidth);
8320			helpers.each(bodyItem.after, maxLineWidth);
8321		});
8322
8323		// Reset back to 0
8324		widthPadding = 0;
8325
8326		// Footer width
8327		ctx.font = helpers.fontString(footerFontSize, model._footerFontStyle, model._footerFontFamily);
8328		helpers.each(model.footer, maxLineWidth);
8329
8330		// Add padding
8331		width += 2 * model.xPadding;
8332
8333		return {
8334			width: width,
8335			height: height
8336		};
8337	}
8338
8339	/**
8340	 * Helper to get the alignment of a tooltip given the size
8341	 */
8342	function determineAlignment(tooltip, size) {
8343		var model = tooltip._model;
8344		var chart = tooltip._chart;
8345		var chartArea = tooltip._chart.chartArea;
8346		var xAlign = 'center';
8347		var yAlign = 'center';
8348
8349		if (model.y < size.height) {
8350			yAlign = 'top';
8351		} else if (model.y > (chart.height - size.height)) {
8352			yAlign = 'bottom';
8353		}
8354
8355		var lf, rf; // functions to determine left, right alignment
8356		var olf, orf; // functions to determine if left/right alignment causes tooltip to go outside chart
8357		var yf; // function to get the y alignment if the tooltip goes outside of the left or right edges
8358		var midX = (chartArea.left + chartArea.right) / 2;
8359		var midY = (chartArea.top + chartArea.bottom) / 2;
8360
8361		if (yAlign === 'center') {
8362			lf = function(x) {
8363				return x <= midX;
8364			};
8365			rf = function(x) {
8366				return x > midX;
8367			};
8368		} else {
8369			lf = function(x) {
8370				return x <= (size.width / 2);
8371			};
8372			rf = function(x) {
8373				return x >= (chart.width - (size.width / 2));
8374			};
8375		}
8376
8377		olf = function(x) {
8378			return x + size.width + model.caretSize + model.caretPadding > chart.width;
8379		};
8380		orf = function(x) {
8381			return x - size.width - model.caretSize - model.caretPadding < 0;
8382		};
8383		yf = function(y) {
8384			return y <= midY ? 'top' : 'bottom';
8385		};
8386
8387		if (lf(model.x)) {
8388			xAlign = 'left';
8389
8390			// Is tooltip too wide and goes over the right side of the chart.?
8391			if (olf(model.x)) {
8392				xAlign = 'center';
8393				yAlign = yf(model.y);
8394			}
8395		} else if (rf(model.x)) {
8396			xAlign = 'right';
8397
8398			// Is tooltip too wide and goes outside left edge of canvas?
8399			if (orf(model.x)) {
8400				xAlign = 'center';
8401				yAlign = yf(model.y);
8402			}
8403		}
8404
8405		var opts = tooltip._options;
8406		return {
8407			xAlign: opts.xAlign ? opts.xAlign : xAlign,
8408			yAlign: opts.yAlign ? opts.yAlign : yAlign
8409		};
8410	}
8411
8412	/**
8413	 * @Helper to get the location a tooltip needs to be placed at given the initial position (via the vm) and the size and alignment
8414	 */
8415	function getBackgroundPoint(vm, size, alignment, chart) {
8416		// Background Position
8417		var x = vm.x;
8418		var y = vm.y;
8419
8420		var caretSize = vm.caretSize;
8421		var caretPadding = vm.caretPadding;
8422		var cornerRadius = vm.cornerRadius;
8423		var xAlign = alignment.xAlign;
8424		var yAlign = alignment.yAlign;
8425		var paddingAndSize = caretSize + caretPadding;
8426		var radiusAndPadding = cornerRadius + caretPadding;
8427
8428		if (xAlign === 'right') {
8429			x -= size.width;
8430		} else if (xAlign === 'center') {
8431			x -= (size.width / 2);
8432			if (x + size.width > chart.width) {
8433				x = chart.width - size.width;
8434			}
8435			if (x < 0) {
8436				x = 0;
8437			}
8438		}
8439
8440		if (yAlign === 'top') {
8441			y += paddingAndSize;
8442		} else if (yAlign === 'bottom') {
8443			y -= size.height + paddingAndSize;
8444		} else {
8445			y -= (size.height / 2);
8446		}
8447
8448		if (yAlign === 'center') {
8449			if (xAlign === 'left') {
8450				x += paddingAndSize;
8451			} else if (xAlign === 'right') {
8452				x -= paddingAndSize;
8453			}
8454		} else if (xAlign === 'left') {
8455			x -= radiusAndPadding;
8456		} else if (xAlign === 'right') {
8457			x += radiusAndPadding;
8458		}
8459
8460		return {
8461			x: x,
8462			y: y
8463		};
8464	}
8465
8466	Chart.Tooltip = Element.extend({
8467		initialize: function() {
8468			this._model = getBaseModel(this._options);
8469			this._lastActive = [];
8470		},
8471
8472		// Get the title
8473		// Args are: (tooltipItem, data)
8474		getTitle: function() {
8475			var me = this;
8476			var opts = me._options;
8477			var callbacks = opts.callbacks;
8478
8479			var beforeTitle = callbacks.beforeTitle.apply(me, arguments);
8480			var title = callbacks.title.apply(me, arguments);
8481			var afterTitle = callbacks.afterTitle.apply(me, arguments);
8482
8483			var lines = [];
8484			lines = pushOrConcat(lines, beforeTitle);
8485			lines = pushOrConcat(lines, title);
8486			lines = pushOrConcat(lines, afterTitle);
8487
8488			return lines;
8489		},
8490
8491		// Args are: (tooltipItem, data)
8492		getBeforeBody: function() {
8493			var lines = this._options.callbacks.beforeBody.apply(this, arguments);
8494			return helpers.isArray(lines) ? lines : lines !== undefined ? [lines] : [];
8495		},
8496
8497		// Args are: (tooltipItem, data)
8498		getBody: function(tooltipItems, data) {
8499			var me = this;
8500			var callbacks = me._options.callbacks;
8501			var bodyItems = [];
8502
8503			helpers.each(tooltipItems, function(tooltipItem) {
8504				var bodyItem = {
8505					before: [],
8506					lines: [],
8507					after: []
8508				};
8509				pushOrConcat(bodyItem.before, callbacks.beforeLabel.call(me, tooltipItem, data));
8510				pushOrConcat(bodyItem.lines, callbacks.label.call(me, tooltipItem, data));
8511				pushOrConcat(bodyItem.after, callbacks.afterLabel.call(me, tooltipItem, data));
8512
8513				bodyItems.push(bodyItem);
8514			});
8515
8516			return bodyItems;
8517		},
8518
8519		// Args are: (tooltipItem, data)
8520		getAfterBody: function() {
8521			var lines = this._options.callbacks.afterBody.apply(this, arguments);
8522			return helpers.isArray(lines) ? lines : lines !== undefined ? [lines] : [];
8523		},
8524
8525		// Get the footer and beforeFooter and afterFooter lines
8526		// Args are: (tooltipItem, data)
8527		getFooter: function() {
8528			var me = this;
8529			var callbacks = me._options.callbacks;
8530
8531			var beforeFooter = callbacks.beforeFooter.apply(me, arguments);
8532			var footer = callbacks.footer.apply(me, arguments);
8533			var afterFooter = callbacks.afterFooter.apply(me, arguments);
8534
8535			var lines = [];
8536			lines = pushOrConcat(lines, beforeFooter);
8537			lines = pushOrConcat(lines, footer);
8538			lines = pushOrConcat(lines, afterFooter);
8539
8540			return lines;
8541		},
8542
8543		update: function(changed) {
8544			var me = this;
8545			var opts = me._options;
8546
8547			// Need to regenerate the model because its faster than using extend and it is necessary due to the optimization in Chart.Element.transition
8548			// 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
8549			// which breaks any animations.
8550			var existingModel = me._model;
8551			var model = me._model = getBaseModel(opts);
8552			var active = me._active;
8553
8554			var data = me._data;
8555
8556			// In the case where active.length === 0 we need to keep these at existing values for good animations
8557			var alignment = {
8558				xAlign: existingModel.xAlign,
8559				yAlign: existingModel.yAlign
8560			};
8561			var backgroundPoint = {
8562				x: existingModel.x,
8563				y: existingModel.y
8564			};
8565			var tooltipSize = {
8566				width: existingModel.width,
8567				height: existingModel.height
8568			};
8569			var tooltipPosition = {
8570				x: existingModel.caretX,
8571				y: existingModel.caretY
8572			};
8573
8574			var i, len;
8575
8576			if (active.length) {
8577				model.opacity = 1;
8578
8579				var labelColors = [];
8580				var labelTextColors = [];
8581				tooltipPosition = Chart.Tooltip.positioners[opts.position].call(me, active, me._eventPosition);
8582
8583				var tooltipItems = [];
8584				for (i = 0, len = active.length; i < len; ++i) {
8585					tooltipItems.push(createTooltipItem(active[i]));
8586				}
8587
8588				// If the user provided a filter function, use it to modify the tooltip items
8589				if (opts.filter) {
8590					tooltipItems = tooltipItems.filter(function(a) {
8591						return opts.filter(a, data);
8592					});
8593				}
8594
8595				// If the user provided a sorting function, use it to modify the tooltip items
8596				if (opts.itemSort) {
8597					tooltipItems = tooltipItems.sort(function(a, b) {
8598						return opts.itemSort(a, b, data);
8599					});
8600				}
8601
8602				// Determine colors for boxes
8603				helpers.each(tooltipItems, function(tooltipItem) {
8604					labelColors.push(opts.callbacks.labelColor.call(me, tooltipItem, me._chart));
8605					labelTextColors.push(opts.callbacks.labelTextColor.call(me, tooltipItem, me._chart));
8606				});
8607
8608
8609				// Build the Text Lines
8610				model.title = me.getTitle(tooltipItems, data);
8611				model.beforeBody = me.getBeforeBody(tooltipItems, data);
8612				model.body = me.getBody(tooltipItems, data);
8613				model.afterBody = me.getAfterBody(tooltipItems, data);
8614				model.footer = me.getFooter(tooltipItems, data);
8615
8616				// Initial positioning and colors
8617				model.x = Math.round(tooltipPosition.x);
8618				model.y = Math.round(tooltipPosition.y);
8619				model.caretPadding = opts.caretPadding;
8620				model.labelColors = labelColors;
8621				model.labelTextColors = labelTextColors;
8622
8623				// data points
8624				model.dataPoints = tooltipItems;
8625
8626				// We need to determine alignment of the tooltip
8627				tooltipSize = getTooltipSize(this, model);
8628				alignment = determineAlignment(this, tooltipSize);
8629				// Final Size and Position
8630				backgroundPoint = getBackgroundPoint(model, tooltipSize, alignment, me._chart);
8631			} else {
8632				model.opacity = 0;
8633			}
8634
8635			model.xAlign = alignment.xAlign;
8636			model.yAlign = alignment.yAlign;
8637			model.x = backgroundPoint.x;
8638			model.y = backgroundPoint.y;
8639			model.width = tooltipSize.width;
8640			model.height = tooltipSize.height;
8641
8642			// Point where the caret on the tooltip points to
8643			model.caretX = tooltipPosition.x;
8644			model.caretY = tooltipPosition.y;
8645
8646			me._model = model;
8647
8648			if (changed && opts.custom) {
8649				opts.custom.call(me, model);
8650			}
8651
8652			return me;
8653		},
8654		drawCaret: function(tooltipPoint, size) {
8655			var ctx = this._chart.ctx;
8656			var vm = this._view;
8657			var caretPosition = this.getCaretPosition(tooltipPoint, size, vm);
8658
8659			ctx.lineTo(caretPosition.x1, caretPosition.y1);
8660			ctx.lineTo(caretPosition.x2, caretPosition.y2);
8661			ctx.lineTo(caretPosition.x3, caretPosition.y3);
8662		},
8663		getCaretPosition: function(tooltipPoint, size, vm) {
8664			var x1, x2, x3, y1, y2, y3;
8665			var caretSize = vm.caretSize;
8666			var cornerRadius = vm.cornerRadius;
8667			var xAlign = vm.xAlign;
8668			var yAlign = vm.yAlign;
8669			var ptX = tooltipPoint.x;
8670			var ptY = tooltipPoint.y;
8671			var width = size.width;
8672			var height = size.height;
8673
8674			if (yAlign === 'center') {
8675				y2 = ptY + (height / 2);
8676
8677				if (xAlign === 'left') {
8678					x1 = ptX;
8679					x2 = x1 - caretSize;
8680					x3 = x1;
8681
8682					y1 = y2 + caretSize;
8683					y3 = y2 - caretSize;
8684				} else {
8685					x1 = ptX + width;
8686					x2 = x1 + caretSize;
8687					x3 = x1;
8688
8689					y1 = y2 - caretSize;
8690					y3 = y2 + caretSize;
8691				}
8692			} else {
8693				if (xAlign === 'left') {
8694					x2 = ptX + cornerRadius + (caretSize);
8695					x1 = x2 - caretSize;
8696					x3 = x2 + caretSize;
8697				} else if (xAlign === 'right') {
8698					x2 = ptX + width - cornerRadius - caretSize;
8699					x1 = x2 - caretSize;
8700					x3 = x2 + caretSize;
8701				} else {
8702					x2 = vm.caretX;
8703					x1 = x2 - caretSize;
8704					x3 = x2 + caretSize;
8705				}
8706				if (yAlign === 'top') {
8707					y1 = ptY;
8708					y2 = y1 - caretSize;
8709					y3 = y1;
8710				} else {
8711					y1 = ptY + height;
8712					y2 = y1 + caretSize;
8713					y3 = y1;
8714					// invert drawing order
8715					var tmp = x3;
8716					x3 = x1;
8717					x1 = tmp;
8718				}
8719			}
8720			return {x1: x1, x2: x2, x3: x3, y1: y1, y2: y2, y3: y3};
8721		},
8722		drawTitle: function(pt, vm, ctx, opacity) {
8723			var title = vm.title;
8724
8725			if (title.length) {
8726				ctx.textAlign = vm._titleAlign;
8727				ctx.textBaseline = 'top';
8728
8729				var titleFontSize = vm.titleFontSize;
8730				var titleSpacing = vm.titleSpacing;
8731
8732				ctx.fillStyle = mergeOpacity(vm.titleFontColor, opacity);
8733				ctx.font = helpers.fontString(titleFontSize, vm._titleFontStyle, vm._titleFontFamily);
8734
8735				var i, len;
8736				for (i = 0, len = title.length; i < len; ++i) {
8737					ctx.fillText(title[i], pt.x, pt.y);
8738					pt.y += titleFontSize + titleSpacing; // Line Height and spacing
8739
8740					if (i + 1 === title.length) {
8741						pt.y += vm.titleMarginBottom - titleSpacing; // If Last, add margin, remove spacing
8742					}
8743				}
8744			}
8745		},
8746		drawBody: function(pt, vm, ctx, opacity) {
8747			var bodyFontSize = vm.bodyFontSize;
8748			var bodySpacing = vm.bodySpacing;
8749			var body = vm.body;
8750
8751			ctx.textAlign = vm._bodyAlign;
8752			ctx.textBaseline = 'top';
8753			ctx.font = helpers.fontString(bodyFontSize, vm._bodyFontStyle, vm._bodyFontFamily);
8754
8755			// Before Body
8756			var xLinePadding = 0;
8757			var fillLineOfText = function(line) {
8758				ctx.fillText(line, pt.x + xLinePadding, pt.y);
8759				pt.y += bodyFontSize + bodySpacing;
8760			};
8761
8762			// Before body lines
8763			ctx.fillStyle = mergeOpacity(vm.bodyFontColor, opacity);
8764			helpers.each(vm.beforeBody, fillLineOfText);
8765
8766			var drawColorBoxes = vm.displayColors;
8767			xLinePadding = drawColorBoxes ? (bodyFontSize + 2) : 0;
8768
8769			// Draw body lines now
8770			helpers.each(body, function(bodyItem, i) {
8771				var textColor = mergeOpacity(vm.labelTextColors[i], opacity);
8772				ctx.fillStyle = textColor;
8773				helpers.each(bodyItem.before, fillLineOfText);
8774
8775				helpers.each(bodyItem.lines, function(line) {
8776					// Draw Legend-like boxes if needed
8777					if (drawColorBoxes) {
8778						// Fill a white rect so that colours merge nicely if the opacity is < 1
8779						ctx.fillStyle = mergeOpacity(vm.legendColorBackground, opacity);
8780						ctx.fillRect(pt.x, pt.y, bodyFontSize, bodyFontSize);
8781
8782						// Border
8783						ctx.lineWidth = 1;
8784						ctx.strokeStyle = mergeOpacity(vm.labelColors[i].borderColor, opacity);
8785						ctx.strokeRect(pt.x, pt.y, bodyFontSize, bodyFontSize);
8786
8787						// Inner square
8788						ctx.fillStyle = mergeOpacity(vm.labelColors[i].backgroundColor, opacity);
8789						ctx.fillRect(pt.x + 1, pt.y + 1, bodyFontSize - 2, bodyFontSize - 2);
8790						ctx.fillStyle = textColor;
8791					}
8792
8793					fillLineOfText(line);
8794				});
8795
8796				helpers.each(bodyItem.after, fillLineOfText);
8797			});
8798
8799			// Reset back to 0 for after body
8800			xLinePadding = 0;
8801
8802			// After body lines
8803			helpers.each(vm.afterBody, fillLineOfText);
8804			pt.y -= bodySpacing; // Remove last body spacing
8805		},
8806		drawFooter: function(pt, vm, ctx, opacity) {
8807			var footer = vm.footer;
8808
8809			if (footer.length) {
8810				pt.y += vm.footerMarginTop;
8811
8812				ctx.textAlign = vm._footerAlign;
8813				ctx.textBaseline = 'top';
8814
8815				ctx.fillStyle = mergeOpacity(vm.footerFontColor, opacity);
8816				ctx.font = helpers.fontString(vm.footerFontSize, vm._footerFontStyle, vm._footerFontFamily);
8817
8818				helpers.each(footer, function(line) {
8819					ctx.fillText(line, pt.x, pt.y);
8820					pt.y += vm.footerFontSize + vm.footerSpacing;
8821				});
8822			}
8823		},
8824		drawBackground: function(pt, vm, ctx, tooltipSize, opacity) {
8825			ctx.fillStyle = mergeOpacity(vm.backgroundColor, opacity);
8826			ctx.strokeStyle = mergeOpacity(vm.borderColor, opacity);
8827			ctx.lineWidth = vm.borderWidth;
8828			var xAlign = vm.xAlign;
8829			var yAlign = vm.yAlign;
8830			var x = pt.x;
8831			var y = pt.y;
8832			var width = tooltipSize.width;
8833			var height = tooltipSize.height;
8834			var radius = vm.cornerRadius;
8835
8836			ctx.beginPath();
8837			ctx.moveTo(x + radius, y);
8838			if (yAlign === 'top') {
8839				this.drawCaret(pt, tooltipSize);
8840			}
8841			ctx.lineTo(x + width - radius, y);
8842			ctx.quadraticCurveTo(x + width, y, x + width, y + radius);
8843			if (yAlign === 'center' && xAlign === 'right') {
8844				this.drawCaret(pt, tooltipSize);
8845			}
8846			ctx.lineTo(x + width, y + height - radius);
8847			ctx.quadraticCurveTo(x + width, y + height, x + width - radius, y + height);
8848			if (yAlign === 'bottom') {
8849				this.drawCaret(pt, tooltipSize);
8850			}
8851			ctx.lineTo(x + radius, y + height);
8852			ctx.quadraticCurveTo(x, y + height, x, y + height - radius);
8853			if (yAlign === 'center' && xAlign === 'left') {
8854				this.drawCaret(pt, tooltipSize);
8855			}
8856			ctx.lineTo(x, y + radius);
8857			ctx.quadraticCurveTo(x, y, x + radius, y);
8858			ctx.closePath();
8859
8860			ctx.fill();
8861
8862			if (vm.borderWidth > 0) {
8863				ctx.stroke();
8864			}
8865		},
8866		draw: function() {
8867			var ctx = this._chart.ctx;
8868			var vm = this._view;
8869
8870			if (vm.opacity === 0) {
8871				return;
8872			}
8873
8874			var tooltipSize = {
8875				width: vm.width,
8876				height: vm.height
8877			};
8878			var pt = {
8879				x: vm.x,
8880				y: vm.y
8881			};
8882
8883			// IE11/Edge does not like very small opacities, so snap to 0
8884			var opacity = Math.abs(vm.opacity < 1e-3) ? 0 : vm.opacity;
8885
8886			// Truthy/falsey value for empty tooltip
8887			var hasTooltipContent = vm.title.length || vm.beforeBody.length || vm.body.length || vm.afterBody.length || vm.footer.length;
8888
8889			if (this._options.enabled && hasTooltipContent) {
8890				// Draw Background
8891				this.drawBackground(pt, vm, ctx, tooltipSize, opacity);
8892
8893				// Draw Title, Body, and Footer
8894				pt.x += vm.xPadding;
8895				pt.y += vm.yPadding;
8896
8897				// Titles
8898				this.drawTitle(pt, vm, ctx, opacity);
8899
8900				// Body
8901				this.drawBody(pt, vm, ctx, opacity);
8902
8903				// Footer
8904				this.drawFooter(pt, vm, ctx, opacity);
8905			}
8906		},
8907
8908		/**
8909		 * Handle an event
8910		 * @private
8911		 * @param {IEvent} event - The event to handle
8912		 * @returns {Boolean} true if the tooltip changed
8913		 */
8914		handleEvent: function(e) {
8915			var me = this;
8916			var options = me._options;
8917			var changed = false;
8918
8919			me._lastActive = me._lastActive || [];
8920
8921			// Find Active Elements for tooltips
8922			if (e.type === 'mouseout') {
8923				me._active = [];
8924			} else {
8925				me._active = me._chart.getElementsAtEventForMode(e, options.mode, options);
8926			}
8927
8928			// Remember Last Actives
8929			changed = !helpers.arrayEquals(me._active, me._lastActive);
8930
8931			// Only handle target event on tooltip change
8932			if (changed) {
8933				me._lastActive = me._active;
8934
8935				if (options.enabled || options.custom) {
8936					me._eventPosition = {
8937						x: e.x,
8938						y: e.y
8939					};
8940
8941					me.update(true);
8942					me.pivot();
8943				}
8944			}
8945
8946			return changed;
8947		}
8948	});
8949
8950	/**
8951	 * @namespace Chart.Tooltip.positioners
8952	 */
8953	Chart.Tooltip.positioners = {
8954		/**
8955		 * Average mode places the tooltip at the average position of the elements shown
8956		 * @function Chart.Tooltip.positioners.average
8957		 * @param elements {ChartElement[]} the elements being displayed in the tooltip
8958		 * @returns {Point} tooltip position
8959		 */
8960		average: function(elements) {
8961			if (!elements.length) {
8962				return false;
8963			}
8964
8965			var i, len;
8966			var x = 0;
8967			var y = 0;
8968			var count = 0;
8969
8970			for (i = 0, len = elements.length; i < len; ++i) {
8971				var el = elements[i];
8972				if (el && el.hasValue()) {
8973					var pos = el.tooltipPosition();
8974					x += pos.x;
8975					y += pos.y;
8976					++count;
8977				}
8978			}
8979
8980			return {
8981				x: Math.round(x / count),
8982				y: Math.round(y / count)
8983			};
8984		},
8985
8986		/**
8987		 * Gets the tooltip position nearest of the item nearest to the event position
8988		 * @function Chart.Tooltip.positioners.nearest
8989		 * @param elements {Chart.Element[]} the tooltip elements
8990		 * @param eventPosition {Point} the position of the event in canvas coordinates
8991		 * @returns {Point} the tooltip position
8992		 */
8993		nearest: function(elements, eventPosition) {
8994			var x = eventPosition.x;
8995			var y = eventPosition.y;
8996			var minDistance = Number.POSITIVE_INFINITY;
8997			var i, len, nearestElement;
8998
8999			for (i = 0, len = elements.length; i < len; ++i) {
9000				var el = elements[i];
9001				if (el && el.hasValue()) {
9002					var center = el.getCenterPoint();
9003					var d = helpers.distanceBetweenPoints(eventPosition, center);
9004
9005					if (d < minDistance) {
9006						minDistance = d;
9007						nearestElement = el;
9008					}
9009				}
9010			}
9011
9012			if (nearestElement) {
9013				var tp = nearestElement.tooltipPosition();
9014				x = tp.x;
9015				y = tp.y;
9016			}
9017
9018			return {
9019				x: x,
9020				y: y
9021			};
9022		}
9023	};
9024};
9025
9026},{"25":25,"26":26,"45":45}],36:[function(require,module,exports){
9027'use strict';
9028
9029var defaults = require(25);
9030var Element = require(26);
9031var helpers = require(45);
9032
9033defaults._set('global', {
9034	elements: {
9035		arc: {
9036			backgroundColor: defaults.global.defaultColor,
9037			borderColor: '#fff',
9038			borderWidth: 2
9039		}
9040	}
9041});
9042
9043module.exports = Element.extend({
9044	inLabelRange: function(mouseX) {
9045		var vm = this._view;
9046
9047		if (vm) {
9048			return (Math.pow(mouseX - vm.x, 2) < Math.pow(vm.radius + vm.hoverRadius, 2));
9049		}
9050		return false;
9051	},
9052
9053	inRange: function(chartX, chartY) {
9054		var vm = this._view;
9055
9056		if (vm) {
9057			var pointRelativePosition = helpers.getAngleFromPoint(vm, {x: chartX, y: chartY});
9058			var	angle = pointRelativePosition.angle;
9059			var distance = pointRelativePosition.distance;
9060
9061			// Sanitise angle range
9062			var startAngle = vm.startAngle;
9063			var endAngle = vm.endAngle;
9064			while (endAngle < startAngle) {
9065				endAngle += 2.0 * Math.PI;
9066			}
9067			while (angle > endAngle) {
9068				angle -= 2.0 * Math.PI;
9069			}
9070			while (angle < startAngle) {
9071				angle += 2.0 * Math.PI;
9072			}
9073
9074			// Check if within the range of the open/close angle
9075			var betweenAngles = (angle >= startAngle && angle <= endAngle);
9076			var withinRadius = (distance >= vm.innerRadius && distance <= vm.outerRadius);
9077
9078			return (betweenAngles && withinRadius);
9079		}
9080		return false;
9081	},
9082
9083	getCenterPoint: function() {
9084		var vm = this._view;
9085		var halfAngle = (vm.startAngle + vm.endAngle) / 2;
9086		var halfRadius = (vm.innerRadius + vm.outerRadius) / 2;
9087		return {
9088			x: vm.x + Math.cos(halfAngle) * halfRadius,
9089			y: vm.y + Math.sin(halfAngle) * halfRadius
9090		};
9091	},
9092
9093	getArea: function() {
9094		var vm = this._view;
9095		return Math.PI * ((vm.endAngle - vm.startAngle) / (2 * Math.PI)) * (Math.pow(vm.outerRadius, 2) - Math.pow(vm.innerRadius, 2));
9096	},
9097
9098	tooltipPosition: function() {
9099		var vm = this._view;
9100		var centreAngle = vm.startAngle + ((vm.endAngle - vm.startAngle) / 2);
9101		var rangeFromCentre = (vm.outerRadius - vm.innerRadius) / 2 + vm.innerRadius;
9102
9103		return {
9104			x: vm.x + (Math.cos(centreAngle) * rangeFromCentre),
9105			y: vm.y + (Math.sin(centreAngle) * rangeFromCentre)
9106		};
9107	},
9108
9109	draw: function() {
9110		var ctx = this._chart.ctx;
9111		var vm = this._view;
9112		var sA = vm.startAngle;
9113		var eA = vm.endAngle;
9114
9115		ctx.beginPath();
9116
9117		ctx.arc(vm.x, vm.y, vm.outerRadius, sA, eA);
9118		ctx.arc(vm.x, vm.y, vm.innerRadius, eA, sA, true);
9119
9120		ctx.closePath();
9121		ctx.strokeStyle = vm.borderColor;
9122		ctx.lineWidth = vm.borderWidth;
9123
9124		ctx.fillStyle = vm.backgroundColor;
9125
9126		ctx.fill();
9127		ctx.lineJoin = 'bevel';
9128
9129		if (vm.borderWidth) {
9130			ctx.stroke();
9131		}
9132	}
9133});
9134
9135},{"25":25,"26":26,"45":45}],37:[function(require,module,exports){
9136'use strict';
9137
9138var defaults = require(25);
9139var Element = require(26);
9140var helpers = require(45);
9141
9142var globalDefaults = defaults.global;
9143
9144defaults._set('global', {
9145	elements: {
9146		line: {
9147			tension: 0.4,
9148			backgroundColor: globalDefaults.defaultColor,
9149			borderWidth: 3,
9150			borderColor: globalDefaults.defaultColor,
9151			borderCapStyle: 'butt',
9152			borderDash: [],
9153			borderDashOffset: 0.0,
9154			borderJoinStyle: 'miter',
9155			capBezierPoints: true,
9156			fill: true, // do we fill in the area between the line and its base axis
9157		}
9158	}
9159});
9160
9161module.exports = Element.extend({
9162	draw: function() {
9163		var me = this;
9164		var vm = me._view;
9165		var ctx = me._chart.ctx;
9166		var spanGaps = vm.spanGaps;
9167		var points = me._children.slice(); // clone array
9168		var globalOptionLineElements = globalDefaults.elements.line;
9169		var lastDrawnIndex = -1;
9170		var index, current, previous, currentVM;
9171
9172		// If we are looping, adding the first point again
9173		if (me._loop && points.length) {
9174			points.push(points[0]);
9175		}
9176
9177		ctx.save();
9178
9179		// Stroke Line Options
9180		ctx.lineCap = vm.borderCapStyle || globalOptionLineElements.borderCapStyle;
9181
9182		// IE 9 and 10 do not support line dash
9183		if (ctx.setLineDash) {
9184			ctx.setLineDash(vm.borderDash || globalOptionLineElements.borderDash);
9185		}
9186
9187		ctx.lineDashOffset = vm.borderDashOffset || globalOptionLineElements.borderDashOffset;
9188		ctx.lineJoin = vm.borderJoinStyle || globalOptionLineElements.borderJoinStyle;
9189		ctx.lineWidth = vm.borderWidth || globalOptionLineElements.borderWidth;
9190		ctx.strokeStyle = vm.borderColor || globalDefaults.defaultColor;
9191
9192		// Stroke Line
9193		ctx.beginPath();
9194		lastDrawnIndex = -1;
9195
9196		for (index = 0; index < points.length; ++index) {
9197			current = points[index];
9198			previous = helpers.previousItem(points, index);
9199			currentVM = current._view;
9200
9201			// First point moves to it's starting position no matter what
9202			if (index === 0) {
9203				if (!currentVM.skip) {
9204					ctx.moveTo(currentVM.x, currentVM.y);
9205					lastDrawnIndex = index;
9206				}
9207			} else {
9208				previous = lastDrawnIndex === -1 ? previous : points[lastDrawnIndex];
9209
9210				if (!currentVM.skip) {
9211					if ((lastDrawnIndex !== (index - 1) && !spanGaps) || lastDrawnIndex === -1) {
9212						// There was a gap and this is the first point after the gap
9213						ctx.moveTo(currentVM.x, currentVM.y);
9214					} else {
9215						// Line to next point
9216						helpers.canvas.lineTo(ctx, previous._view, current._view);
9217					}
9218					lastDrawnIndex = index;
9219				}
9220			}
9221		}
9222
9223		ctx.stroke();
9224		ctx.restore();
9225	}
9226});
9227
9228},{"25":25,"26":26,"45":45}],38:[function(require,module,exports){
9229'use strict';
9230
9231var defaults = require(25);
9232var Element = require(26);
9233var helpers = require(45);
9234
9235var defaultColor = defaults.global.defaultColor;
9236
9237defaults._set('global', {
9238	elements: {
9239		point: {
9240			radius: 3,
9241			pointStyle: 'circle',
9242			backgroundColor: defaultColor,
9243			borderColor: defaultColor,
9244			borderWidth: 1,
9245			// Hover
9246			hitRadius: 1,
9247			hoverRadius: 4,
9248			hoverBorderWidth: 1
9249		}
9250	}
9251});
9252
9253function xRange(mouseX) {
9254	var vm = this._view;
9255	return vm ? (Math.abs(mouseX - vm.x) < vm.radius + vm.hitRadius) : false;
9256}
9257
9258function yRange(mouseY) {
9259	var vm = this._view;
9260	return vm ? (Math.abs(mouseY - vm.y) < vm.radius + vm.hitRadius) : false;
9261}
9262
9263module.exports = Element.extend({
9264	inRange: function(mouseX, mouseY) {
9265		var vm = this._view;
9266		return vm ? ((Math.pow(mouseX - vm.x, 2) + Math.pow(mouseY - vm.y, 2)) < Math.pow(vm.hitRadius + vm.radius, 2)) : false;
9267	},
9268
9269	inLabelRange: xRange,
9270	inXRange: xRange,
9271	inYRange: yRange,
9272
9273	getCenterPoint: function() {
9274		var vm = this._view;
9275		return {
9276			x: vm.x,
9277			y: vm.y
9278		};
9279	},
9280
9281	getArea: function() {
9282		return Math.PI * Math.pow(this._view.radius, 2);
9283	},
9284
9285	tooltipPosition: function() {
9286		var vm = this._view;
9287		return {
9288			x: vm.x,
9289			y: vm.y,
9290			padding: vm.radius + vm.borderWidth
9291		};
9292	},
9293
9294	draw: function(chartArea) {
9295		var vm = this._view;
9296		var model = this._model;
9297		var ctx = this._chart.ctx;
9298		var pointStyle = vm.pointStyle;
9299		var radius = vm.radius;
9300		var x = vm.x;
9301		var y = vm.y;
9302		var color = helpers.color;
9303		var errMargin = 1.01; // 1.01 is margin for Accumulated error. (Especially Edge, IE.)
9304		var ratio = 0;
9305
9306		if (vm.skip) {
9307			return;
9308		}
9309
9310		ctx.strokeStyle = vm.borderColor || defaultColor;
9311		ctx.lineWidth = helpers.valueOrDefault(vm.borderWidth, defaults.global.elements.point.borderWidth);
9312		ctx.fillStyle = vm.backgroundColor || defaultColor;
9313
9314		// Cliping for Points.
9315		// going out from inner charArea?
9316		if ((chartArea !== undefined) && ((model.x < chartArea.left) || (chartArea.right * errMargin < model.x) || (model.y < chartArea.top) || (chartArea.bottom * errMargin < model.y))) {
9317			// Point fade out
9318			if (model.x < chartArea.left) {
9319				ratio = (x - model.x) / (chartArea.left - model.x);
9320			} else if (chartArea.right * errMargin < model.x) {
9321				ratio = (model.x - x) / (model.x - chartArea.right);
9322			} else if (model.y < chartArea.top) {
9323				ratio = (y - model.y) / (chartArea.top - model.y);
9324			} else if (chartArea.bottom * errMargin < model.y) {
9325				ratio = (model.y - y) / (model.y - chartArea.bottom);
9326			}
9327			ratio = Math.round(ratio * 100) / 100;
9328			ctx.strokeStyle = color(ctx.strokeStyle).alpha(ratio).rgbString();
9329			ctx.fillStyle = color(ctx.fillStyle).alpha(ratio).rgbString();
9330		}
9331
9332		helpers.canvas.drawPoint(ctx, pointStyle, radius, x, y);
9333	}
9334});
9335
9336},{"25":25,"26":26,"45":45}],39:[function(require,module,exports){
9337'use strict';
9338
9339var defaults = require(25);
9340var Element = require(26);
9341
9342defaults._set('global', {
9343	elements: {
9344		rectangle: {
9345			backgroundColor: defaults.global.defaultColor,
9346			borderColor: defaults.global.defaultColor,
9347			borderSkipped: 'bottom',
9348			borderWidth: 0
9349		}
9350	}
9351});
9352
9353function isVertical(bar) {
9354	return bar._view.width !== undefined;
9355}
9356
9357/**
9358 * Helper function to get the bounds of the bar regardless of the orientation
9359 * @param bar {Chart.Element.Rectangle} the bar
9360 * @return {Bounds} bounds of the bar
9361 * @private
9362 */
9363function getBarBounds(bar) {
9364	var vm = bar._view;
9365	var x1, x2, y1, y2;
9366
9367	if (isVertical(bar)) {
9368		// vertical
9369		var halfWidth = vm.width / 2;
9370		x1 = vm.x - halfWidth;
9371		x2 = vm.x + halfWidth;
9372		y1 = Math.min(vm.y, vm.base);
9373		y2 = Math.max(vm.y, vm.base);
9374	} else {
9375		// horizontal bar
9376		var halfHeight = vm.height / 2;
9377		x1 = Math.min(vm.x, vm.base);
9378		x2 = Math.max(vm.x, vm.base);
9379		y1 = vm.y - halfHeight;
9380		y2 = vm.y + halfHeight;
9381	}
9382
9383	return {
9384		left: x1,
9385		top: y1,
9386		right: x2,
9387		bottom: y2
9388	};
9389}
9390
9391module.exports = Element.extend({
9392	draw: function() {
9393		var ctx = this._chart.ctx;
9394		var vm = this._view;
9395		var left, right, top, bottom, signX, signY, borderSkipped;
9396		var borderWidth = vm.borderWidth;
9397
9398		if (!vm.horizontal) {
9399			// bar
9400			left = vm.x - vm.width / 2;
9401			right = vm.x + vm.width / 2;
9402			top = vm.y;
9403			bottom = vm.base;
9404			signX = 1;
9405			signY = bottom > top ? 1 : -1;
9406			borderSkipped = vm.borderSkipped || 'bottom';
9407		} else {
9408			// horizontal bar
9409			left = vm.base;
9410			right = vm.x;
9411			top = vm.y - vm.height / 2;
9412			bottom = vm.y + vm.height / 2;
9413			signX = right > left ? 1 : -1;
9414			signY = 1;
9415			borderSkipped = vm.borderSkipped || 'left';
9416		}
9417
9418		// Canvas doesn't allow us to stroke inside the width so we can
9419		// adjust the sizes to fit if we're setting a stroke on the line
9420		if (borderWidth) {
9421			// borderWidth shold be less than bar width and bar height.
9422			var barSize = Math.min(Math.abs(left - right), Math.abs(top - bottom));
9423			borderWidth = borderWidth > barSize ? barSize : borderWidth;
9424			var halfStroke = borderWidth / 2;
9425			// Adjust borderWidth when bar top position is near vm.base(zero).
9426			var borderLeft = left + (borderSkipped !== 'left' ? halfStroke * signX : 0);
9427			var borderRight = right + (borderSkipped !== 'right' ? -halfStroke * signX : 0);
9428			var borderTop = top + (borderSkipped !== 'top' ? halfStroke * signY : 0);
9429			var borderBottom = bottom + (borderSkipped !== 'bottom' ? -halfStroke * signY : 0);
9430			// not become a vertical line?
9431			if (borderLeft !== borderRight) {
9432				top = borderTop;
9433				bottom = borderBottom;
9434			}
9435			// not become a horizontal line?
9436			if (borderTop !== borderBottom) {
9437				left = borderLeft;
9438				right = borderRight;
9439			}
9440		}
9441
9442		ctx.beginPath();
9443		ctx.fillStyle = vm.backgroundColor;
9444		ctx.strokeStyle = vm.borderColor;
9445		ctx.lineWidth = borderWidth;
9446
9447		// Corner points, from bottom-left to bottom-right clockwise
9448		// | 1 2 |
9449		// | 0 3 |
9450		var corners = [
9451			[left, bottom],
9452			[left, top],
9453			[right, top],
9454			[right, bottom]
9455		];
9456
9457		// Find first (starting) corner with fallback to 'bottom'
9458		var borders = ['bottom', 'left', 'top', 'right'];
9459		var startCorner = borders.indexOf(borderSkipped, 0);
9460		if (startCorner === -1) {
9461			startCorner = 0;
9462		}
9463
9464		function cornerAt(index) {
9465			return corners[(startCorner + index) % 4];
9466		}
9467
9468		// Draw rectangle from 'startCorner'
9469		var corner = cornerAt(0);
9470		ctx.moveTo(corner[0], corner[1]);
9471
9472		for (var i = 1; i < 4; i++) {
9473			corner = cornerAt(i);
9474			ctx.lineTo(corner[0], corner[1]);
9475		}
9476
9477		ctx.fill();
9478		if (borderWidth) {
9479			ctx.stroke();
9480		}
9481	},
9482
9483	height: function() {
9484		var vm = this._view;
9485		return vm.base - vm.y;
9486	},
9487
9488	inRange: function(mouseX, mouseY) {
9489		var inRange = false;
9490
9491		if (this._view) {
9492			var bounds = getBarBounds(this);
9493			inRange = mouseX >= bounds.left && mouseX <= bounds.right && mouseY >= bounds.top && mouseY <= bounds.bottom;
9494		}
9495
9496		return inRange;
9497	},
9498
9499	inLabelRange: function(mouseX, mouseY) {
9500		var me = this;
9501		if (!me._view) {
9502			return false;
9503		}
9504
9505		var inRange = false;
9506		var bounds = getBarBounds(me);
9507
9508		if (isVertical(me)) {
9509			inRange = mouseX >= bounds.left && mouseX <= bounds.right;
9510		} else {
9511			inRange = mouseY >= bounds.top && mouseY <= bounds.bottom;
9512		}
9513
9514		return inRange;
9515	},
9516
9517	inXRange: function(mouseX) {
9518		var bounds = getBarBounds(this);
9519		return mouseX >= bounds.left && mouseX <= bounds.right;
9520	},
9521
9522	inYRange: function(mouseY) {
9523		var bounds = getBarBounds(this);
9524		return mouseY >= bounds.top && mouseY <= bounds.bottom;
9525	},
9526
9527	getCenterPoint: function() {
9528		var vm = this._view;
9529		var x, y;
9530		if (isVertical(this)) {
9531			x = vm.x;
9532			y = (vm.y + vm.base) / 2;
9533		} else {
9534			x = (vm.x + vm.base) / 2;
9535			y = vm.y;
9536		}
9537
9538		return {x: x, y: y};
9539	},
9540
9541	getArea: function() {
9542		var vm = this._view;
9543		return vm.width * Math.abs(vm.y - vm.base);
9544	},
9545
9546	tooltipPosition: function() {
9547		var vm = this._view;
9548		return {
9549			x: vm.x,
9550			y: vm.y
9551		};
9552	}
9553});
9554
9555},{"25":25,"26":26}],40:[function(require,module,exports){
9556'use strict';
9557
9558module.exports = {};
9559module.exports.Arc = require(36);
9560module.exports.Line = require(37);
9561module.exports.Point = require(38);
9562module.exports.Rectangle = require(39);
9563
9564},{"36":36,"37":37,"38":38,"39":39}],41:[function(require,module,exports){
9565'use strict';
9566
9567var helpers = require(42);
9568
9569/**
9570 * @namespace Chart.helpers.canvas
9571 */
9572var exports = module.exports = {
9573	/**
9574	 * Clears the entire canvas associated to the given `chart`.
9575	 * @param {Chart} chart - The chart for which to clear the canvas.
9576	 */
9577	clear: function(chart) {
9578		chart.ctx.clearRect(0, 0, chart.width, chart.height);
9579	},
9580
9581	/**
9582	 * Creates a "path" for a rectangle with rounded corners at position (x, y) with a
9583	 * given size (width, height) and the same `radius` for all corners.
9584	 * @param {CanvasRenderingContext2D} ctx - The canvas 2D Context.
9585	 * @param {Number} x - The x axis of the coordinate for the rectangle starting point.
9586	 * @param {Number} y - The y axis of the coordinate for the rectangle starting point.
9587	 * @param {Number} width - The rectangle's width.
9588	 * @param {Number} height - The rectangle's height.
9589	 * @param {Number} radius - The rounded amount (in pixels) for the four corners.
9590	 * @todo handle `radius` as top-left, top-right, bottom-right, bottom-left array/object?
9591	 */
9592	roundedRect: function(ctx, x, y, width, height, radius) {
9593		if (radius) {
9594			var rx = Math.min(radius, width / 2);
9595			var ry = Math.min(radius, height / 2);
9596
9597			ctx.moveTo(x + rx, y);
9598			ctx.lineTo(x + width - rx, y);
9599			ctx.quadraticCurveTo(x + width, y, x + width, y + ry);
9600			ctx.lineTo(x + width, y + height - ry);
9601			ctx.quadraticCurveTo(x + width, y + height, x + width - rx, y + height);
9602			ctx.lineTo(x + rx, y + height);
9603			ctx.quadraticCurveTo(x, y + height, x, y + height - ry);
9604			ctx.lineTo(x, y + ry);
9605			ctx.quadraticCurveTo(x, y, x + rx, y);
9606		} else {
9607			ctx.rect(x, y, width, height);
9608		}
9609	},
9610
9611	drawPoint: function(ctx, style, radius, x, y) {
9612		var type, edgeLength, xOffset, yOffset, height, size;
9613
9614		if (style && typeof style === 'object') {
9615			type = style.toString();
9616			if (type === '[object HTMLImageElement]' || type === '[object HTMLCanvasElement]') {
9617				ctx.drawImage(style, x - style.width / 2, y - style.height / 2, style.width, style.height);
9618				return;
9619			}
9620		}
9621
9622		if (isNaN(radius) || radius <= 0) {
9623			return;
9624		}
9625
9626		switch (style) {
9627		// Default includes circle
9628		default:
9629			ctx.beginPath();
9630			ctx.arc(x, y, radius, 0, Math.PI * 2);
9631			ctx.closePath();
9632			ctx.fill();
9633			break;
9634		case 'triangle':
9635			ctx.beginPath();
9636			edgeLength = 3 * radius / Math.sqrt(3);
9637			height = edgeLength * Math.sqrt(3) / 2;
9638			ctx.moveTo(x - edgeLength / 2, y + height / 3);
9639			ctx.lineTo(x + edgeLength / 2, y + height / 3);
9640			ctx.lineTo(x, y - 2 * height / 3);
9641			ctx.closePath();
9642			ctx.fill();
9643			break;
9644		case 'rect':
9645			size = 1 / Math.SQRT2 * radius;
9646			ctx.beginPath();
9647			ctx.fillRect(x - size, y - size, 2 * size, 2 * size);
9648			ctx.strokeRect(x - size, y - size, 2 * size, 2 * size);
9649			break;
9650		case 'rectRounded':
9651			var offset = radius / Math.SQRT2;
9652			var leftX = x - offset;
9653			var topY = y - offset;
9654			var sideSize = Math.SQRT2 * radius;
9655			ctx.beginPath();
9656			this.roundedRect(ctx, leftX, topY, sideSize, sideSize, radius / 2);
9657			ctx.closePath();
9658			ctx.fill();
9659			break;
9660		case 'rectRot':
9661			size = 1 / Math.SQRT2 * radius;
9662			ctx.beginPath();
9663			ctx.moveTo(x - size, y);
9664			ctx.lineTo(x, y + size);
9665			ctx.lineTo(x + size, y);
9666			ctx.lineTo(x, y - size);
9667			ctx.closePath();
9668			ctx.fill();
9669			break;
9670		case 'cross':
9671			ctx.beginPath();
9672			ctx.moveTo(x, y + radius);
9673			ctx.lineTo(x, y - radius);
9674			ctx.moveTo(x - radius, y);
9675			ctx.lineTo(x + radius, y);
9676			ctx.closePath();
9677			break;
9678		case 'crossRot':
9679			ctx.beginPath();
9680			xOffset = Math.cos(Math.PI / 4) * radius;
9681			yOffset = Math.sin(Math.PI / 4) * radius;
9682			ctx.moveTo(x - xOffset, y - yOffset);
9683			ctx.lineTo(x + xOffset, y + yOffset);
9684			ctx.moveTo(x - xOffset, y + yOffset);
9685			ctx.lineTo(x + xOffset, y - yOffset);
9686			ctx.closePath();
9687			break;
9688		case 'star':
9689			ctx.beginPath();
9690			ctx.moveTo(x, y + radius);
9691			ctx.lineTo(x, y - radius);
9692			ctx.moveTo(x - radius, y);
9693			ctx.lineTo(x + radius, y);
9694			xOffset = Math.cos(Math.PI / 4) * radius;
9695			yOffset = Math.sin(Math.PI / 4) * radius;
9696			ctx.moveTo(x - xOffset, y - yOffset);
9697			ctx.lineTo(x + xOffset, y + yOffset);
9698			ctx.moveTo(x - xOffset, y + yOffset);
9699			ctx.lineTo(x + xOffset, y - yOffset);
9700			ctx.closePath();
9701			break;
9702		case 'line':
9703			ctx.beginPath();
9704			ctx.moveTo(x - radius, y);
9705			ctx.lineTo(x + radius, y);
9706			ctx.closePath();
9707			break;
9708		case 'dash':
9709			ctx.beginPath();
9710			ctx.moveTo(x, y);
9711			ctx.lineTo(x + radius, y);
9712			ctx.closePath();
9713			break;
9714		}
9715
9716		ctx.stroke();
9717	},
9718
9719	clipArea: function(ctx, area) {
9720		ctx.save();
9721		ctx.beginPath();
9722		ctx.rect(area.left, area.top, area.right - area.left, area.bottom - area.top);
9723		ctx.clip();
9724	},
9725
9726	unclipArea: function(ctx) {
9727		ctx.restore();
9728	},
9729
9730	lineTo: function(ctx, previous, target, flip) {
9731		if (target.steppedLine) {
9732			if ((target.steppedLine === 'after' && !flip) || (target.steppedLine !== 'after' && flip)) {
9733				ctx.lineTo(previous.x, target.y);
9734			} else {
9735				ctx.lineTo(target.x, previous.y);
9736			}
9737			ctx.lineTo(target.x, target.y);
9738			return;
9739		}
9740
9741		if (!target.tension) {
9742			ctx.lineTo(target.x, target.y);
9743			return;
9744		}
9745
9746		ctx.bezierCurveTo(
9747			flip ? previous.controlPointPreviousX : previous.controlPointNextX,
9748			flip ? previous.controlPointPreviousY : previous.controlPointNextY,
9749			flip ? target.controlPointNextX : target.controlPointPreviousX,
9750			flip ? target.controlPointNextY : target.controlPointPreviousY,
9751			target.x,
9752			target.y);
9753	}
9754};
9755
9756// DEPRECATIONS
9757
9758/**
9759 * Provided for backward compatibility, use Chart.helpers.canvas.clear instead.
9760 * @namespace Chart.helpers.clear
9761 * @deprecated since version 2.7.0
9762 * @todo remove at version 3
9763 * @private
9764 */
9765helpers.clear = exports.clear;
9766
9767/**
9768 * Provided for backward compatibility, use Chart.helpers.canvas.roundedRect instead.
9769 * @namespace Chart.helpers.drawRoundedRectangle
9770 * @deprecated since version 2.7.0
9771 * @todo remove at version 3
9772 * @private
9773 */
9774helpers.drawRoundedRectangle = function(ctx) {
9775	ctx.beginPath();
9776	exports.roundedRect.apply(exports, arguments);
9777	ctx.closePath();
9778};
9779
9780},{"42":42}],42:[function(require,module,exports){
9781'use strict';
9782
9783/**
9784 * @namespace Chart.helpers
9785 */
9786var helpers = {
9787	/**
9788	 * An empty function that can be used, for example, for optional callback.
9789	 */
9790	noop: function() {},
9791
9792	/**
9793	 * Returns a unique id, sequentially generated from a global variable.
9794	 * @returns {Number}
9795	 * @function
9796	 */
9797	uid: (function() {
9798		var id = 0;
9799		return function() {
9800			return id++;
9801		};
9802	}()),
9803
9804	/**
9805	 * Returns true if `value` is neither null nor undefined, else returns false.
9806	 * @param {*} value - The value to test.
9807	 * @returns {Boolean}
9808	 * @since 2.7.0
9809	 */
9810	isNullOrUndef: function(value) {
9811		return value === null || typeof value === 'undefined';
9812	},
9813
9814	/**
9815	 * Returns true if `value` is an array, else returns false.
9816	 * @param {*} value - The value to test.
9817	 * @returns {Boolean}
9818	 * @function
9819	 */
9820	isArray: Array.isArray ? Array.isArray : function(value) {
9821		return Object.prototype.toString.call(value) === '[object Array]';
9822	},
9823
9824	/**
9825	 * Returns true if `value` is an object (excluding null), else returns false.
9826	 * @param {*} value - The value to test.
9827	 * @returns {Boolean}
9828	 * @since 2.7.0
9829	 */
9830	isObject: function(value) {
9831		return value !== null && Object.prototype.toString.call(value) === '[object Object]';
9832	},
9833
9834	/**
9835	 * Returns `value` if defined, else returns `defaultValue`.
9836	 * @param {*} value - The value to return if defined.
9837	 * @param {*} defaultValue - The value to return if `value` is undefined.
9838	 * @returns {*}
9839	 */
9840	valueOrDefault: function(value, defaultValue) {
9841		return typeof value === 'undefined' ? defaultValue : value;
9842	},
9843
9844	/**
9845	 * Returns value at the given `index` in array if defined, else returns `defaultValue`.
9846	 * @param {Array} value - The array to lookup for value at `index`.
9847	 * @param {Number} index - The index in `value` to lookup for value.
9848	 * @param {*} defaultValue - The value to return if `value[index]` is undefined.
9849	 * @returns {*}
9850	 */
9851	valueAtIndexOrDefault: function(value, index, defaultValue) {
9852		return helpers.valueOrDefault(helpers.isArray(value) ? value[index] : value, defaultValue);
9853	},
9854
9855	/**
9856	 * Calls `fn` with the given `args` in the scope defined by `thisArg` and returns the
9857	 * value returned by `fn`. If `fn` is not a function, this method returns undefined.
9858	 * @param {Function} fn - The function to call.
9859	 * @param {Array|undefined|null} args - The arguments with which `fn` should be called.
9860	 * @param {Object} [thisArg] - The value of `this` provided for the call to `fn`.
9861	 * @returns {*}
9862	 */
9863	callback: function(fn, args, thisArg) {
9864		if (fn && typeof fn.call === 'function') {
9865			return fn.apply(thisArg, args);
9866		}
9867	},
9868
9869	/**
9870	 * Note(SB) for performance sake, this method should only be used when loopable type
9871	 * is unknown or in none intensive code (not called often and small loopable). Else
9872	 * it's preferable to use a regular for() loop and save extra function calls.
9873	 * @param {Object|Array} loopable - The object or array to be iterated.
9874	 * @param {Function} fn - The function to call for each item.
9875	 * @param {Object} [thisArg] - The value of `this` provided for the call to `fn`.
9876	 * @param {Boolean} [reverse] - If true, iterates backward on the loopable.
9877	 */
9878	each: function(loopable, fn, thisArg, reverse) {
9879		var i, len, keys;
9880		if (helpers.isArray(loopable)) {
9881			len = loopable.length;
9882			if (reverse) {
9883				for (i = len - 1; i >= 0; i--) {
9884					fn.call(thisArg, loopable[i], i);
9885				}
9886			} else {
9887				for (i = 0; i < len; i++) {
9888					fn.call(thisArg, loopable[i], i);
9889				}
9890			}
9891		} else if (helpers.isObject(loopable)) {
9892			keys = Object.keys(loopable);
9893			len = keys.length;
9894			for (i = 0; i < len; i++) {
9895				fn.call(thisArg, loopable[keys[i]], keys[i]);
9896			}
9897		}
9898	},
9899
9900	/**
9901	 * Returns true if the `a0` and `a1` arrays have the same content, else returns false.
9902	 * @see http://stackoverflow.com/a/14853974
9903	 * @param {Array} a0 - The array to compare
9904	 * @param {Array} a1 - The array to compare
9905	 * @returns {Boolean}
9906	 */
9907	arrayEquals: function(a0, a1) {
9908		var i, ilen, v0, v1;
9909
9910		if (!a0 || !a1 || a0.length !== a1.length) {
9911			return false;
9912		}
9913
9914		for (i = 0, ilen = a0.length; i < ilen; ++i) {
9915			v0 = a0[i];
9916			v1 = a1[i];
9917
9918			if (v0 instanceof Array && v1 instanceof Array) {
9919				if (!helpers.arrayEquals(v0, v1)) {
9920					return false;
9921				}
9922			} else if (v0 !== v1) {
9923				// NOTE: two different object instances will never be equal: {x:20} != {x:20}
9924				return false;
9925			}
9926		}
9927
9928		return true;
9929	},
9930
9931	/**
9932	 * Returns a deep copy of `source` without keeping references on objects and arrays.
9933	 * @param {*} source - The value to clone.
9934	 * @returns {*}
9935	 */
9936	clone: function(source) {
9937		if (helpers.isArray(source)) {
9938			return source.map(helpers.clone);
9939		}
9940
9941		if (helpers.isObject(source)) {
9942			var target = {};
9943			var keys = Object.keys(source);
9944			var klen = keys.length;
9945			var k = 0;
9946
9947			for (; k < klen; ++k) {
9948				target[keys[k]] = helpers.clone(source[keys[k]]);
9949			}
9950
9951			return target;
9952		}
9953
9954		return source;
9955	},
9956
9957	/**
9958	 * The default merger when Chart.helpers.merge is called without merger option.
9959	 * Note(SB): this method is also used by configMerge and scaleMerge as fallback.
9960	 * @private
9961	 */
9962	_merger: function(key, target, source, options) {
9963		var tval = target[key];
9964		var sval = source[key];
9965
9966		if (helpers.isObject(tval) && helpers.isObject(sval)) {
9967			helpers.merge(tval, sval, options);
9968		} else {
9969			target[key] = helpers.clone(sval);
9970		}
9971	},
9972
9973	/**
9974	 * Merges source[key] in target[key] only if target[key] is undefined.
9975	 * @private
9976	 */
9977	_mergerIf: function(key, target, source) {
9978		var tval = target[key];
9979		var sval = source[key];
9980
9981		if (helpers.isObject(tval) && helpers.isObject(sval)) {
9982			helpers.mergeIf(tval, sval);
9983		} else if (!target.hasOwnProperty(key)) {
9984			target[key] = helpers.clone(sval);
9985		}
9986	},
9987
9988	/**
9989	 * Recursively deep copies `source` properties into `target` with the given `options`.
9990	 * IMPORTANT: `target` is not cloned and will be updated with `source` properties.
9991	 * @param {Object} target - The target object in which all sources are merged into.
9992	 * @param {Object|Array(Object)} source - Object(s) to merge into `target`.
9993	 * @param {Object} [options] - Merging options:
9994	 * @param {Function} [options.merger] - The merge method (key, target, source, options)
9995	 * @returns {Object} The `target` object.
9996	 */
9997	merge: function(target, source, options) {
9998		var sources = helpers.isArray(source) ? source : [source];
9999		var ilen = sources.length;
10000		var merge, i, keys, klen, k;
10001
10002		if (!helpers.isObject(target)) {
10003			return target;
10004		}
10005
10006		options = options || {};
10007		merge = options.merger || helpers._merger;
10008
10009		for (i = 0; i < ilen; ++i) {
10010			source = sources[i];
10011			if (!helpers.isObject(source)) {
10012				continue;
10013			}
10014
10015			keys = Object.keys(source);
10016			for (k = 0, klen = keys.length; k < klen; ++k) {
10017				merge(keys[k], target, source, options);
10018			}
10019		}
10020
10021		return target;
10022	},
10023
10024	/**
10025	 * Recursively deep copies `source` properties into `target` *only* if not defined in target.
10026	 * IMPORTANT: `target` is not cloned and will be updated with `source` properties.
10027	 * @param {Object} target - The target object in which all sources are merged into.
10028	 * @param {Object|Array(Object)} source - Object(s) to merge into `target`.
10029	 * @returns {Object} The `target` object.
10030	 */
10031	mergeIf: function(target, source) {
10032		return helpers.merge(target, source, {merger: helpers._mergerIf});
10033	},
10034
10035	/**
10036	 * Applies the contents of two or more objects together into the first object.
10037	 * @param {Object} target - The target object in which all objects are merged into.
10038	 * @param {Object} arg1 - Object containing additional properties to merge in target.
10039	 * @param {Object} argN - Additional objects containing properties to merge in target.
10040	 * @returns {Object} The `target` object.
10041	 */
10042	extend: function(target) {
10043		var setFn = function(value, key) {
10044			target[key] = value;
10045		};
10046		for (var i = 1, ilen = arguments.length; i < ilen; ++i) {
10047			helpers.each(arguments[i], setFn);
10048		}
10049		return target;
10050	},
10051
10052	/**
10053	 * Basic javascript inheritance based on the model created in Backbone.js
10054	 */
10055	inherits: function(extensions) {
10056		var me = this;
10057		var ChartElement = (extensions && extensions.hasOwnProperty('constructor')) ? extensions.constructor : function() {
10058			return me.apply(this, arguments);
10059		};
10060
10061		var Surrogate = function() {
10062			this.constructor = ChartElement;
10063		};
10064
10065		Surrogate.prototype = me.prototype;
10066		ChartElement.prototype = new Surrogate();
10067		ChartElement.extend = helpers.inherits;
10068
10069		if (extensions) {
10070			helpers.extend(ChartElement.prototype, extensions);
10071		}
10072
10073		ChartElement.__super__ = me.prototype;
10074		return ChartElement;
10075	}
10076};
10077
10078module.exports = helpers;
10079
10080// DEPRECATIONS
10081
10082/**
10083 * Provided for backward compatibility, use Chart.helpers.callback instead.
10084 * @function Chart.helpers.callCallback
10085 * @deprecated since version 2.6.0
10086 * @todo remove at version 3
10087 * @private
10088 */
10089helpers.callCallback = helpers.callback;
10090
10091/**
10092 * Provided for backward compatibility, use Array.prototype.indexOf instead.
10093 * Array.prototype.indexOf compatibility: Chrome, Opera, Safari, FF1.5+, IE9+
10094 * @function Chart.helpers.indexOf
10095 * @deprecated since version 2.7.0
10096 * @todo remove at version 3
10097 * @private
10098 */
10099helpers.indexOf = function(array, item, fromIndex) {
10100	return Array.prototype.indexOf.call(array, item, fromIndex);
10101};
10102
10103/**
10104 * Provided for backward compatibility, use Chart.helpers.valueOrDefault instead.
10105 * @function Chart.helpers.getValueOrDefault
10106 * @deprecated since version 2.7.0
10107 * @todo remove at version 3
10108 * @private
10109 */
10110helpers.getValueOrDefault = helpers.valueOrDefault;
10111
10112/**
10113 * Provided for backward compatibility, use Chart.helpers.valueAtIndexOrDefault instead.
10114 * @function Chart.helpers.getValueAtIndexOrDefault
10115 * @deprecated since version 2.7.0
10116 * @todo remove at version 3
10117 * @private
10118 */
10119helpers.getValueAtIndexOrDefault = helpers.valueAtIndexOrDefault;
10120
10121},{}],43:[function(require,module,exports){
10122'use strict';
10123
10124var helpers = require(42);
10125
10126/**
10127 * Easing functions adapted from Robert Penner's easing equations.
10128 * @namespace Chart.helpers.easingEffects
10129 * @see http://www.robertpenner.com/easing/
10130 */
10131var effects = {
10132	linear: function(t) {
10133		return t;
10134	},
10135
10136	easeInQuad: function(t) {
10137		return t * t;
10138	},
10139
10140	easeOutQuad: function(t) {
10141		return -t * (t - 2);
10142	},
10143
10144	easeInOutQuad: function(t) {
10145		if ((t /= 0.5) < 1) {
10146			return 0.5 * t * t;
10147		}
10148		return -0.5 * ((--t) * (t - 2) - 1);
10149	},
10150
10151	easeInCubic: function(t) {
10152		return t * t * t;
10153	},
10154
10155	easeOutCubic: function(t) {
10156		return (t = t - 1) * t * t + 1;
10157	},
10158
10159	easeInOutCubic: function(t) {
10160		if ((t /= 0.5) < 1) {
10161			return 0.5 * t * t * t;
10162		}
10163		return 0.5 * ((t -= 2) * t * t + 2);
10164	},
10165
10166	easeInQuart: function(t) {
10167		return t * t * t * t;
10168	},
10169
10170	easeOutQuart: function(t) {
10171		return -((t = t - 1) * t * t * t - 1);
10172	},
10173
10174	easeInOutQuart: function(t) {
10175		if ((t /= 0.5) < 1) {
10176			return 0.5 * t * t * t * t;
10177		}
10178		return -0.5 * ((t -= 2) * t * t * t - 2);
10179	},
10180
10181	easeInQuint: function(t) {
10182		return t * t * t * t * t;
10183	},
10184
10185	easeOutQuint: function(t) {
10186		return (t = t - 1) * t * t * t * t + 1;
10187	},
10188
10189	easeInOutQuint: function(t) {
10190		if ((t /= 0.5) < 1) {
10191			return 0.5 * t * t * t * t * t;
10192		}
10193		return 0.5 * ((t -= 2) * t * t * t * t + 2);
10194	},
10195
10196	easeInSine: function(t) {
10197		return -Math.cos(t * (Math.PI / 2)) + 1;
10198	},
10199
10200	easeOutSine: function(t) {
10201		return Math.sin(t * (Math.PI / 2));
10202	},
10203
10204	easeInOutSine: function(t) {
10205		return -0.5 * (Math.cos(Math.PI * t) - 1);
10206	},
10207
10208	easeInExpo: function(t) {
10209		return (t === 0) ? 0 : Math.pow(2, 10 * (t - 1));
10210	},
10211
10212	easeOutExpo: function(t) {
10213		return (t === 1) ? 1 : -Math.pow(2, -10 * t) + 1;
10214	},
10215
10216	easeInOutExpo: function(t) {
10217		if (t === 0) {
10218			return 0;
10219		}
10220		if (t === 1) {
10221			return 1;
10222		}
10223		if ((t /= 0.5) < 1) {
10224			return 0.5 * Math.pow(2, 10 * (t - 1));
10225		}
10226		return 0.5 * (-Math.pow(2, -10 * --t) + 2);
10227	},
10228
10229	easeInCirc: function(t) {
10230		if (t >= 1) {
10231			return t;
10232		}
10233		return -(Math.sqrt(1 - t * t) - 1);
10234	},
10235
10236	easeOutCirc: function(t) {
10237		return Math.sqrt(1 - (t = t - 1) * t);
10238	},
10239
10240	easeInOutCirc: function(t) {
10241		if ((t /= 0.5) < 1) {
10242			return -0.5 * (Math.sqrt(1 - t * t) - 1);
10243		}
10244		return 0.5 * (Math.sqrt(1 - (t -= 2) * t) + 1);
10245	},
10246
10247	easeInElastic: function(t) {
10248		var s = 1.70158;
10249		var p = 0;
10250		var a = 1;
10251		if (t === 0) {
10252			return 0;
10253		}
10254		if (t === 1) {
10255			return 1;
10256		}
10257		if (!p) {
10258			p = 0.3;
10259		}
10260		if (a < 1) {
10261			a = 1;
10262			s = p / 4;
10263		} else {
10264			s = p / (2 * Math.PI) * Math.asin(1 / a);
10265		}
10266		return -(a * Math.pow(2, 10 * (t -= 1)) * Math.sin((t - s) * (2 * Math.PI) / p));
10267	},
10268
10269	easeOutElastic: function(t) {
10270		var s = 1.70158;
10271		var p = 0;
10272		var a = 1;
10273		if (t === 0) {
10274			return 0;
10275		}
10276		if (t === 1) {
10277			return 1;
10278		}
10279		if (!p) {
10280			p = 0.3;
10281		}
10282		if (a < 1) {
10283			a = 1;
10284			s = p / 4;
10285		} else {
10286			s = p / (2 * Math.PI) * Math.asin(1 / a);
10287		}
10288		return a * Math.pow(2, -10 * t) * Math.sin((t - s) * (2 * Math.PI) / p) + 1;
10289	},
10290
10291	easeInOutElastic: function(t) {
10292		var s = 1.70158;
10293		var p = 0;
10294		var a = 1;
10295		if (t === 0) {
10296			return 0;
10297		}
10298		if ((t /= 0.5) === 2) {
10299			return 1;
10300		}
10301		if (!p) {
10302			p = 0.45;
10303		}
10304		if (a < 1) {
10305			a = 1;
10306			s = p / 4;
10307		} else {
10308			s = p / (2 * Math.PI) * Math.asin(1 / a);
10309		}
10310		if (t < 1) {
10311			return -0.5 * (a * Math.pow(2, 10 * (t -= 1)) * Math.sin((t - s) * (2 * Math.PI) / p));
10312		}
10313		return a * Math.pow(2, -10 * (t -= 1)) * Math.sin((t - s) * (2 * Math.PI) / p) * 0.5 + 1;
10314	},
10315	easeInBack: function(t) {
10316		var s = 1.70158;
10317		return t * t * ((s + 1) * t - s);
10318	},
10319
10320	easeOutBack: function(t) {
10321		var s = 1.70158;
10322		return (t = t - 1) * t * ((s + 1) * t + s) + 1;
10323	},
10324
10325	easeInOutBack: function(t) {
10326		var s = 1.70158;
10327		if ((t /= 0.5) < 1) {
10328			return 0.5 * (t * t * (((s *= (1.525)) + 1) * t - s));
10329		}
10330		return 0.5 * ((t -= 2) * t * (((s *= (1.525)) + 1) * t + s) + 2);
10331	},
10332
10333	easeInBounce: function(t) {
10334		return 1 - effects.easeOutBounce(1 - t);
10335	},
10336
10337	easeOutBounce: function(t) {
10338		if (t < (1 / 2.75)) {
10339			return 7.5625 * t * t;
10340		}
10341		if (t < (2 / 2.75)) {
10342			return 7.5625 * (t -= (1.5 / 2.75)) * t + 0.75;
10343		}
10344		if (t < (2.5 / 2.75)) {
10345			return 7.5625 * (t -= (2.25 / 2.75)) * t + 0.9375;
10346		}
10347		return 7.5625 * (t -= (2.625 / 2.75)) * t + 0.984375;
10348	},
10349
10350	easeInOutBounce: function(t) {
10351		if (t < 0.5) {
10352			return effects.easeInBounce(t * 2) * 0.5;
10353		}
10354		return effects.easeOutBounce(t * 2 - 1) * 0.5 + 0.5;
10355	}
10356};
10357
10358module.exports = {
10359	effects: effects
10360};
10361
10362// DEPRECATIONS
10363
10364/**
10365 * Provided for backward compatibility, use Chart.helpers.easing.effects instead.
10366 * @function Chart.helpers.easingEffects
10367 * @deprecated since version 2.7.0
10368 * @todo remove at version 3
10369 * @private
10370 */
10371helpers.easingEffects = effects;
10372
10373},{"42":42}],44:[function(require,module,exports){
10374'use strict';
10375
10376var helpers = require(42);
10377
10378/**
10379 * @alias Chart.helpers.options
10380 * @namespace
10381 */
10382module.exports = {
10383	/**
10384	 * Converts the given line height `value` in pixels for a specific font `size`.
10385	 * @param {Number|String} value - The lineHeight to parse (eg. 1.6, '14px', '75%', '1.6em').
10386	 * @param {Number} size - The font size (in pixels) used to resolve relative `value`.
10387	 * @returns {Number} The effective line height in pixels (size * 1.2 if value is invalid).
10388	 * @see https://developer.mozilla.org/en-US/docs/Web/CSS/line-height
10389	 * @since 2.7.0
10390	 */
10391	toLineHeight: function(value, size) {
10392		var matches = ('' + value).match(/^(normal|(\d+(?:\.\d+)?)(px|em|%)?)$/);
10393		if (!matches || matches[1] === 'normal') {
10394			return size * 1.2;
10395		}
10396
10397		value = +matches[2];
10398
10399		switch (matches[3]) {
10400		case 'px':
10401			return value;
10402		case '%':
10403			value /= 100;
10404			break;
10405		default:
10406			break;
10407		}
10408
10409		return size * value;
10410	},
10411
10412	/**
10413	 * Converts the given value into a padding object with pre-computed width/height.
10414	 * @param {Number|Object} value - If a number, set the value to all TRBL component,
10415	 *  else, if and object, use defined properties and sets undefined ones to 0.
10416	 * @returns {Object} The padding values (top, right, bottom, left, width, height)
10417	 * @since 2.7.0
10418	 */
10419	toPadding: function(value) {
10420		var t, r, b, l;
10421
10422		if (helpers.isObject(value)) {
10423			t = +value.top || 0;
10424			r = +value.right || 0;
10425			b = +value.bottom || 0;
10426			l = +value.left || 0;
10427		} else {
10428			t = r = b = l = +value || 0;
10429		}
10430
10431		return {
10432			top: t,
10433			right: r,
10434			bottom: b,
10435			left: l,
10436			height: t + b,
10437			width: l + r
10438		};
10439	},
10440
10441	/**
10442	 * Evaluates the given `inputs` sequentially and returns the first defined value.
10443	 * @param {Array[]} inputs - An array of values, falling back to the last value.
10444	 * @param {Object} [context] - If defined and the current value is a function, the value
10445	 * is called with `context` as first argument and the result becomes the new input.
10446	 * @param {Number} [index] - If defined and the current value is an array, the value
10447	 * at `index` become the new input.
10448	 * @since 2.7.0
10449	 */
10450	resolve: function(inputs, context, index) {
10451		var i, ilen, value;
10452
10453		for (i = 0, ilen = inputs.length; i < ilen; ++i) {
10454			value = inputs[i];
10455			if (value === undefined) {
10456				continue;
10457			}
10458			if (context !== undefined && typeof value === 'function') {
10459				value = value(context);
10460			}
10461			if (index !== undefined && helpers.isArray(value)) {
10462				value = value[index];
10463			}
10464			if (value !== undefined) {
10465				return value;
10466			}
10467		}
10468	}
10469};
10470
10471},{"42":42}],45:[function(require,module,exports){
10472'use strict';
10473
10474module.exports = require(42);
10475module.exports.easing = require(43);
10476module.exports.canvas = require(41);
10477module.exports.options = require(44);
10478
10479},{"41":41,"42":42,"43":43,"44":44}],46:[function(require,module,exports){
10480/**
10481 * Platform fallback implementation (minimal).
10482 * @see https://github.com/chartjs/Chart.js/pull/4591#issuecomment-319575939
10483 */
10484
10485module.exports = {
10486	acquireContext: function(item) {
10487		if (item && item.canvas) {
10488			// Support for any object associated to a canvas (including a context2d)
10489			item = item.canvas;
10490		}
10491
10492		return item && item.getContext('2d') || null;
10493	}
10494};
10495
10496},{}],47:[function(require,module,exports){
10497/**
10498 * Chart.Platform implementation for targeting a web browser
10499 */
10500
10501'use strict';
10502
10503var helpers = require(45);
10504
10505var EXPANDO_KEY = '$chartjs';
10506var CSS_PREFIX = 'chartjs-';
10507var CSS_RENDER_MONITOR = CSS_PREFIX + 'render-monitor';
10508var CSS_RENDER_ANIMATION = CSS_PREFIX + 'render-animation';
10509var ANIMATION_START_EVENTS = ['animationstart', 'webkitAnimationStart'];
10510
10511/**
10512 * DOM event types -> Chart.js event types.
10513 * Note: only events with different types are mapped.
10514 * @see https://developer.mozilla.org/en-US/docs/Web/Events
10515 */
10516var EVENT_TYPES = {
10517	touchstart: 'mousedown',
10518	touchmove: 'mousemove',
10519	touchend: 'mouseup',
10520	pointerenter: 'mouseenter',
10521	pointerdown: 'mousedown',
10522	pointermove: 'mousemove',
10523	pointerup: 'mouseup',
10524	pointerleave: 'mouseout',
10525	pointerout: 'mouseout'
10526};
10527
10528/**
10529 * The "used" size is the final value of a dimension property after all calculations have
10530 * been performed. This method uses the computed style of `element` but returns undefined
10531 * if the computed style is not expressed in pixels. That can happen in some cases where
10532 * `element` has a size relative to its parent and this last one is not yet displayed,
10533 * for example because of `display: none` on a parent node.
10534 * @see https://developer.mozilla.org/en-US/docs/Web/CSS/used_value
10535 * @returns {Number} Size in pixels or undefined if unknown.
10536 */
10537function readUsedSize(element, property) {
10538	var value = helpers.getStyle(element, property);
10539	var matches = value && value.match(/^(\d+)(\.\d+)?px$/);
10540	return matches ? Number(matches[1]) : undefined;
10541}
10542
10543/**
10544 * Initializes the canvas style and render size without modifying the canvas display size,
10545 * since responsiveness is handled by the controller.resize() method. The config is used
10546 * to determine the aspect ratio to apply in case no explicit height has been specified.
10547 */
10548function initCanvas(canvas, config) {
10549	var style = canvas.style;
10550
10551	// NOTE(SB) canvas.getAttribute('width') !== canvas.width: in the first case it
10552	// returns null or '' if no explicit value has been set to the canvas attribute.
10553	var renderHeight = canvas.getAttribute('height');
10554	var renderWidth = canvas.getAttribute('width');
10555
10556	// Chart.js modifies some canvas values that we want to restore on destroy
10557	canvas[EXPANDO_KEY] = {
10558		initial: {
10559			height: renderHeight,
10560			width: renderWidth,
10561			style: {
10562				display: style.display,
10563				height: style.height,
10564				width: style.width
10565			}
10566		}
10567	};
10568
10569	// Force canvas to display as block to avoid extra space caused by inline
10570	// elements, which would interfere with the responsive resize process.
10571	// https://github.com/chartjs/Chart.js/issues/2538
10572	style.display = style.display || 'block';
10573
10574	if (renderWidth === null || renderWidth === '') {
10575		var displayWidth = readUsedSize(canvas, 'width');
10576		if (displayWidth !== undefined) {
10577			canvas.width = displayWidth;
10578		}
10579	}
10580
10581	if (renderHeight === null || renderHeight === '') {
10582		if (canvas.style.height === '') {
10583			// If no explicit render height and style height, let's apply the aspect ratio,
10584			// which one can be specified by the user but also by charts as default option
10585			// (i.e. options.aspectRatio). If not specified, use canvas aspect ratio of 2.
10586			canvas.height = canvas.width / (config.options.aspectRatio || 2);
10587		} else {
10588			var displayHeight = readUsedSize(canvas, 'height');
10589			if (displayWidth !== undefined) {
10590				canvas.height = displayHeight;
10591			}
10592		}
10593	}
10594
10595	return canvas;
10596}
10597
10598/**
10599 * Detects support for options object argument in addEventListener.
10600 * https://developer.mozilla.org/en-US/docs/Web/API/EventTarget/addEventListener#Safely_detecting_option_support
10601 * @private
10602 */
10603var supportsEventListenerOptions = (function() {
10604	var supports = false;
10605	try {
10606		var options = Object.defineProperty({}, 'passive', {
10607			get: function() {
10608				supports = true;
10609			}
10610		});
10611		window.addEventListener('e', null, options);
10612	} catch (e) {
10613		// continue regardless of error
10614	}
10615	return supports;
10616}());
10617
10618// Default passive to true as expected by Chrome for 'touchstart' and 'touchend' events.
10619// https://github.com/chartjs/Chart.js/issues/4287
10620var eventListenerOptions = supportsEventListenerOptions ? {passive: true} : false;
10621
10622function addEventListener(node, type, listener) {
10623	node.addEventListener(type, listener, eventListenerOptions);
10624}
10625
10626function removeEventListener(node, type, listener) {
10627	node.removeEventListener(type, listener, eventListenerOptions);
10628}
10629
10630function createEvent(type, chart, x, y, nativeEvent) {
10631	return {
10632		type: type,
10633		chart: chart,
10634		native: nativeEvent || null,
10635		x: x !== undefined ? x : null,
10636		y: y !== undefined ? y : null,
10637	};
10638}
10639
10640function fromNativeEvent(event, chart) {
10641	var type = EVENT_TYPES[event.type] || event.type;
10642	var pos = helpers.getRelativePosition(event, chart);
10643	return createEvent(type, chart, pos.x, pos.y, event);
10644}
10645
10646function throttled(fn, thisArg) {
10647	var ticking = false;
10648	var args = [];
10649
10650	return function() {
10651		args = Array.prototype.slice.call(arguments);
10652		thisArg = thisArg || this;
10653
10654		if (!ticking) {
10655			ticking = true;
10656			helpers.requestAnimFrame.call(window, function() {
10657				ticking = false;
10658				fn.apply(thisArg, args);
10659			});
10660		}
10661	};
10662}
10663
10664// Implementation based on https://github.com/marcj/css-element-queries
10665function createResizer(handler) {
10666	var resizer = document.createElement('div');
10667	var cls = CSS_PREFIX + 'size-monitor';
10668	var maxSize = 1000000;
10669	var style =
10670		'position:absolute;' +
10671		'left:0;' +
10672		'top:0;' +
10673		'right:0;' +
10674		'bottom:0;' +
10675		'overflow:hidden;' +
10676		'pointer-events:none;' +
10677		'visibility:hidden;' +
10678		'z-index:-1;';
10679
10680	resizer.style.cssText = style;
10681	resizer.className = cls;
10682	resizer.innerHTML =
10683		'<div class="' + cls + '-expand" style="' + style + '">' +
10684			'<div style="' +
10685				'position:absolute;' +
10686				'width:' + maxSize + 'px;' +
10687				'height:' + maxSize + 'px;' +
10688				'left:0;' +
10689				'top:0">' +
10690			'</div>' +
10691		'</div>' +
10692		'<div class="' + cls + '-shrink" style="' + style + '">' +
10693			'<div style="' +
10694				'position:absolute;' +
10695				'width:200%;' +
10696				'height:200%;' +
10697				'left:0; ' +
10698				'top:0">' +
10699			'</div>' +
10700		'</div>';
10701
10702	var expand = resizer.childNodes[0];
10703	var shrink = resizer.childNodes[1];
10704
10705	resizer._reset = function() {
10706		expand.scrollLeft = maxSize;
10707		expand.scrollTop = maxSize;
10708		shrink.scrollLeft = maxSize;
10709		shrink.scrollTop = maxSize;
10710	};
10711	var onScroll = function() {
10712		resizer._reset();
10713		handler();
10714	};
10715
10716	addEventListener(expand, 'scroll', onScroll.bind(expand, 'expand'));
10717	addEventListener(shrink, 'scroll', onScroll.bind(shrink, 'shrink'));
10718
10719	return resizer;
10720}
10721
10722// https://davidwalsh.name/detect-node-insertion
10723function watchForRender(node, handler) {
10724	var expando = node[EXPANDO_KEY] || (node[EXPANDO_KEY] = {});
10725	var proxy = expando.renderProxy = function(e) {
10726		if (e.animationName === CSS_RENDER_ANIMATION) {
10727			handler();
10728		}
10729	};
10730
10731	helpers.each(ANIMATION_START_EVENTS, function(type) {
10732		addEventListener(node, type, proxy);
10733	});
10734
10735	// #4737: Chrome might skip the CSS animation when the CSS_RENDER_MONITOR class
10736	// is removed then added back immediately (same animation frame?). Accessing the
10737	// `offsetParent` property will force a reflow and re-evaluate the CSS animation.
10738	// https://gist.github.com/paulirish/5d52fb081b3570c81e3a#box-metrics
10739	// https://github.com/chartjs/Chart.js/issues/4737
10740	expando.reflow = !!node.offsetParent;
10741
10742	node.classList.add(CSS_RENDER_MONITOR);
10743}
10744
10745function unwatchForRender(node) {
10746	var expando = node[EXPANDO_KEY] || {};
10747	var proxy = expando.renderProxy;
10748
10749	if (proxy) {
10750		helpers.each(ANIMATION_START_EVENTS, function(type) {
10751			removeEventListener(node, type, proxy);
10752		});
10753
10754		delete expando.renderProxy;
10755	}
10756
10757	node.classList.remove(CSS_RENDER_MONITOR);
10758}
10759
10760function addResizeListener(node, listener, chart) {
10761	var expando = node[EXPANDO_KEY] || (node[EXPANDO_KEY] = {});
10762
10763	// Let's keep track of this added resizer and thus avoid DOM query when removing it.
10764	var resizer = expando.resizer = createResizer(throttled(function() {
10765		if (expando.resizer) {
10766			return listener(createEvent('resize', chart));
10767		}
10768	}));
10769
10770	// The resizer needs to be attached to the node parent, so we first need to be
10771	// sure that `node` is attached to the DOM before injecting the resizer element.
10772	watchForRender(node, function() {
10773		if (expando.resizer) {
10774			var container = node.parentNode;
10775			if (container && container !== resizer.parentNode) {
10776				container.insertBefore(resizer, container.firstChild);
10777			}
10778
10779			// The container size might have changed, let's reset the resizer state.
10780			resizer._reset();
10781		}
10782	});
10783}
10784
10785function removeResizeListener(node) {
10786	var expando = node[EXPANDO_KEY] || {};
10787	var resizer = expando.resizer;
10788
10789	delete expando.resizer;
10790	unwatchForRender(node);
10791
10792	if (resizer && resizer.parentNode) {
10793		resizer.parentNode.removeChild(resizer);
10794	}
10795}
10796
10797function injectCSS(platform, css) {
10798	// http://stackoverflow.com/q/3922139
10799	var style = platform._style || document.createElement('style');
10800	if (!platform._style) {
10801		platform._style = style;
10802		css = '/* Chart.js */\n' + css;
10803		style.setAttribute('type', 'text/css');
10804		document.getElementsByTagName('head')[0].appendChild(style);
10805	}
10806
10807	style.appendChild(document.createTextNode(css));
10808}
10809
10810module.exports = {
10811	/**
10812	 * This property holds whether this platform is enabled for the current environment.
10813	 * Currently used by platform.js to select the proper implementation.
10814	 * @private
10815	 */
10816	_enabled: typeof window !== 'undefined' && typeof document !== 'undefined',
10817
10818	initialize: function() {
10819		var keyframes = 'from{opacity:0.99}to{opacity:1}';
10820
10821		injectCSS(this,
10822			// DOM rendering detection
10823			// https://davidwalsh.name/detect-node-insertion
10824			'@-webkit-keyframes ' + CSS_RENDER_ANIMATION + '{' + keyframes + '}' +
10825			'@keyframes ' + CSS_RENDER_ANIMATION + '{' + keyframes + '}' +
10826			'.' + CSS_RENDER_MONITOR + '{' +
10827				'-webkit-animation:' + CSS_RENDER_ANIMATION + ' 0.001s;' +
10828				'animation:' + CSS_RENDER_ANIMATION + ' 0.001s;' +
10829			'}'
10830		);
10831	},
10832
10833	acquireContext: function(item, config) {
10834		if (typeof item === 'string') {
10835			item = document.getElementById(item);
10836		} else if (item.length) {
10837			// Support for array based queries (such as jQuery)
10838			item = item[0];
10839		}
10840
10841		if (item && item.canvas) {
10842			// Support for any object associated to a canvas (including a context2d)
10843			item = item.canvas;
10844		}
10845
10846		// To prevent canvas fingerprinting, some add-ons undefine the getContext
10847		// method, for example: https://github.com/kkapsner/CanvasBlocker
10848		// https://github.com/chartjs/Chart.js/issues/2807
10849		var context = item && item.getContext && item.getContext('2d');
10850
10851		// `instanceof HTMLCanvasElement/CanvasRenderingContext2D` fails when the item is
10852		// inside an iframe or when running in a protected environment. We could guess the
10853		// types from their toString() value but let's keep things flexible and assume it's
10854		// a sufficient condition if the item has a context2D which has item as `canvas`.
10855		// https://github.com/chartjs/Chart.js/issues/3887
10856		// https://github.com/chartjs/Chart.js/issues/4102
10857		// https://github.com/chartjs/Chart.js/issues/4152
10858		if (context && context.canvas === item) {
10859			initCanvas(item, config);
10860			return context;
10861		}
10862
10863		return null;
10864	},
10865
10866	releaseContext: function(context) {
10867		var canvas = context.canvas;
10868		if (!canvas[EXPANDO_KEY]) {
10869			return;
10870		}
10871
10872		var initial = canvas[EXPANDO_KEY].initial;
10873		['height', 'width'].forEach(function(prop) {
10874			var value = initial[prop];
10875			if (helpers.isNullOrUndef(value)) {
10876				canvas.removeAttribute(prop);
10877			} else {
10878				canvas.setAttribute(prop, value);
10879			}
10880		});
10881
10882		helpers.each(initial.style || {}, function(value, key) {
10883			canvas.style[key] = value;
10884		});
10885
10886		// The canvas render size might have been changed (and thus the state stack discarded),
10887		// we can't use save() and restore() to restore the initial state. So make sure that at
10888		// least the canvas context is reset to the default state by setting the canvas width.
10889		// https://www.w3.org/TR/2011/WD-html5-20110525/the-canvas-element.html
10890		canvas.width = canvas.width;
10891
10892		delete canvas[EXPANDO_KEY];
10893	},
10894
10895	addEventListener: function(chart, type, listener) {
10896		var canvas = chart.canvas;
10897		if (type === 'resize') {
10898			// Note: the resize event is not supported on all browsers.
10899			addResizeListener(canvas, listener, chart);
10900			return;
10901		}
10902
10903		var expando = listener[EXPANDO_KEY] || (listener[EXPANDO_KEY] = {});
10904		var proxies = expando.proxies || (expando.proxies = {});
10905		var proxy = proxies[chart.id + '_' + type] = function(event) {
10906			listener(fromNativeEvent(event, chart));
10907		};
10908
10909		addEventListener(canvas, type, proxy);
10910	},
10911
10912	removeEventListener: function(chart, type, listener) {
10913		var canvas = chart.canvas;
10914		if (type === 'resize') {
10915			// Note: the resize event is not supported on all browsers.
10916			removeResizeListener(canvas, listener);
10917			return;
10918		}
10919
10920		var expando = listener[EXPANDO_KEY] || {};
10921		var proxies = expando.proxies || {};
10922		var proxy = proxies[chart.id + '_' + type];
10923		if (!proxy) {
10924			return;
10925		}
10926
10927		removeEventListener(canvas, type, proxy);
10928	}
10929};
10930
10931// DEPRECATIONS
10932
10933/**
10934 * Provided for backward compatibility, use EventTarget.addEventListener instead.
10935 * EventTarget.addEventListener compatibility: Chrome, Opera 7, Safari, FF1.5+, IE9+
10936 * @see https://developer.mozilla.org/en-US/docs/Web/API/EventTarget/addEventListener
10937 * @function Chart.helpers.addEvent
10938 * @deprecated since version 2.7.0
10939 * @todo remove at version 3
10940 * @private
10941 */
10942helpers.addEvent = addEventListener;
10943
10944/**
10945 * Provided for backward compatibility, use EventTarget.removeEventListener instead.
10946 * EventTarget.removeEventListener compatibility: Chrome, Opera 7, Safari, FF1.5+, IE9+
10947 * @see https://developer.mozilla.org/en-US/docs/Web/API/EventTarget/removeEventListener
10948 * @function Chart.helpers.removeEvent
10949 * @deprecated since version 2.7.0
10950 * @todo remove at version 3
10951 * @private
10952 */
10953helpers.removeEvent = removeEventListener;
10954
10955},{"45":45}],48:[function(require,module,exports){
10956'use strict';
10957
10958var helpers = require(45);
10959var basic = require(46);
10960var dom = require(47);
10961
10962// @TODO Make possible to select another platform at build time.
10963var implementation = dom._enabled ? dom : basic;
10964
10965/**
10966 * @namespace Chart.platform
10967 * @see https://chartjs.gitbooks.io/proposals/content/Platform.html
10968 * @since 2.4.0
10969 */
10970module.exports = helpers.extend({
10971	/**
10972	 * @since 2.7.0
10973	 */
10974	initialize: function() {},
10975
10976	/**
10977	 * Called at chart construction time, returns a context2d instance implementing
10978	 * the [W3C Canvas 2D Context API standard]{@link https://www.w3.org/TR/2dcontext/}.
10979	 * @param {*} item - The native item from which to acquire context (platform specific)
10980	 * @param {Object} options - The chart options
10981	 * @returns {CanvasRenderingContext2D} context2d instance
10982	 */
10983	acquireContext: function() {},
10984
10985	/**
10986	 * Called at chart destruction time, releases any resources associated to the context
10987	 * previously returned by the acquireContext() method.
10988	 * @param {CanvasRenderingContext2D} context - The context2d instance
10989	 * @returns {Boolean} true if the method succeeded, else false
10990	 */
10991	releaseContext: function() {},
10992
10993	/**
10994	 * Registers the specified listener on the given chart.
10995	 * @param {Chart} chart - Chart from which to listen for event
10996	 * @param {String} type - The ({@link IEvent}) type to listen for
10997	 * @param {Function} listener - Receives a notification (an object that implements
10998	 * the {@link IEvent} interface) when an event of the specified type occurs.
10999	 */
11000	addEventListener: function() {},
11001
11002	/**
11003	 * Removes the specified listener previously registered with addEventListener.
11004	 * @param {Chart} chart -Chart from which to remove the listener
11005	 * @param {String} type - The ({@link IEvent}) type to remove
11006	 * @param {Function} listener - The listener function to remove from the event target.
11007	 */
11008	removeEventListener: function() {}
11009
11010}, implementation);
11011
11012/**
11013 * @interface IPlatform
11014 * Allows abstracting platform dependencies away from the chart
11015 * @borrows Chart.platform.acquireContext as acquireContext
11016 * @borrows Chart.platform.releaseContext as releaseContext
11017 * @borrows Chart.platform.addEventListener as addEventListener
11018 * @borrows Chart.platform.removeEventListener as removeEventListener
11019 */
11020
11021/**
11022 * @interface IEvent
11023 * @prop {String} type - The event type name, possible values are:
11024 * 'contextmenu', 'mouseenter', 'mousedown', 'mousemove', 'mouseup', 'mouseout',
11025 * 'click', 'dblclick', 'keydown', 'keypress', 'keyup' and 'resize'
11026 * @prop {*} native - The original native event (null for emulated events, e.g. 'resize')
11027 * @prop {Number} x - The mouse x position, relative to the canvas (null for incompatible events)
11028 * @prop {Number} y - The mouse y position, relative to the canvas (null for incompatible events)
11029 */
11030
11031},{"45":45,"46":46,"47":47}],49:[function(require,module,exports){
11032'use strict';
11033
11034module.exports = {};
11035module.exports.filler = require(50);
11036module.exports.legend = require(51);
11037module.exports.title = require(52);
11038
11039},{"50":50,"51":51,"52":52}],50:[function(require,module,exports){
11040/**
11041 * Plugin based on discussion from the following Chart.js issues:
11042 * @see https://github.com/chartjs/Chart.js/issues/2380#issuecomment-279961569
11043 * @see https://github.com/chartjs/Chart.js/issues/2440#issuecomment-256461897
11044 */
11045
11046'use strict';
11047
11048var defaults = require(25);
11049var elements = require(40);
11050var helpers = require(45);
11051
11052defaults._set('global', {
11053	plugins: {
11054		filler: {
11055			propagate: true
11056		}
11057	}
11058});
11059
11060var mappers = {
11061	dataset: function(source) {
11062		var index = source.fill;
11063		var chart = source.chart;
11064		var meta = chart.getDatasetMeta(index);
11065		var visible = meta && chart.isDatasetVisible(index);
11066		var points = (visible && meta.dataset._children) || [];
11067		var length = points.length || 0;
11068
11069		return !length ? null : function(point, i) {
11070			return (i < length && points[i]._view) || null;
11071		};
11072	},
11073
11074	boundary: function(source) {
11075		var boundary = source.boundary;
11076		var x = boundary ? boundary.x : null;
11077		var y = boundary ? boundary.y : null;
11078
11079		return function(point) {
11080			return {
11081				x: x === null ? point.x : x,
11082				y: y === null ? point.y : y,
11083			};
11084		};
11085	}
11086};
11087
11088// @todo if (fill[0] === '#')
11089function decodeFill(el, index, count) {
11090	var model = el._model || {};
11091	var fill = model.fill;
11092	var target;
11093
11094	if (fill === undefined) {
11095		fill = !!model.backgroundColor;
11096	}
11097
11098	if (fill === false || fill === null) {
11099		return false;
11100	}
11101
11102	if (fill === true) {
11103		return 'origin';
11104	}
11105
11106	target = parseFloat(fill, 10);
11107	if (isFinite(target) && Math.floor(target) === target) {
11108		if (fill[0] === '-' || fill[0] === '+') {
11109			target = index + target;
11110		}
11111
11112		if (target === index || target < 0 || target >= count) {
11113			return false;
11114		}
11115
11116		return target;
11117	}
11118
11119	switch (fill) {
11120	// compatibility
11121	case 'bottom':
11122		return 'start';
11123	case 'top':
11124		return 'end';
11125	case 'zero':
11126		return 'origin';
11127	// supported boundaries
11128	case 'origin':
11129	case 'start':
11130	case 'end':
11131		return fill;
11132	// invalid fill values
11133	default:
11134		return false;
11135	}
11136}
11137
11138function computeBoundary(source) {
11139	var model = source.el._model || {};
11140	var scale = source.el._scale || {};
11141	var fill = source.fill;
11142	var target = null;
11143	var horizontal;
11144
11145	if (isFinite(fill)) {
11146		return null;
11147	}
11148
11149	// Backward compatibility: until v3, we still need to support boundary values set on
11150	// the model (scaleTop, scaleBottom and scaleZero) because some external plugins and
11151	// controllers might still use it (e.g. the Smith chart).
11152
11153	if (fill === 'start') {
11154		target = model.scaleBottom === undefined ? scale.bottom : model.scaleBottom;
11155	} else if (fill === 'end') {
11156		target = model.scaleTop === undefined ? scale.top : model.scaleTop;
11157	} else if (model.scaleZero !== undefined) {
11158		target = model.scaleZero;
11159	} else if (scale.getBasePosition) {
11160		target = scale.getBasePosition();
11161	} else if (scale.getBasePixel) {
11162		target = scale.getBasePixel();
11163	}
11164
11165	if (target !== undefined && target !== null) {
11166		if (target.x !== undefined && target.y !== undefined) {
11167			return target;
11168		}
11169
11170		if (typeof target === 'number' && isFinite(target)) {
11171			horizontal = scale.isHorizontal();
11172			return {
11173				x: horizontal ? target : null,
11174				y: horizontal ? null : target
11175			};
11176		}
11177	}
11178
11179	return null;
11180}
11181
11182function resolveTarget(sources, index, propagate) {
11183	var source = sources[index];
11184	var fill = source.fill;
11185	var visited = [index];
11186	var target;
11187
11188	if (!propagate) {
11189		return fill;
11190	}
11191
11192	while (fill !== false && visited.indexOf(fill) === -1) {
11193		if (!isFinite(fill)) {
11194			return fill;
11195		}
11196
11197		target = sources[fill];
11198		if (!target) {
11199			return false;
11200		}
11201
11202		if (target.visible) {
11203			return fill;
11204		}
11205
11206		visited.push(fill);
11207		fill = target.fill;
11208	}
11209
11210	return false;
11211}
11212
11213function createMapper(source) {
11214	var fill = source.fill;
11215	var type = 'dataset';
11216
11217	if (fill === false) {
11218		return null;
11219	}
11220
11221	if (!isFinite(fill)) {
11222		type = 'boundary';
11223	}
11224
11225	return mappers[type](source);
11226}
11227
11228function isDrawable(point) {
11229	return point && !point.skip;
11230}
11231
11232function drawArea(ctx, curve0, curve1, len0, len1) {
11233	var i;
11234
11235	if (!len0 || !len1) {
11236		return;
11237	}
11238
11239	// building first area curve (normal)
11240	ctx.moveTo(curve0[0].x, curve0[0].y);
11241	for (i = 1; i < len0; ++i) {
11242		helpers.canvas.lineTo(ctx, curve0[i - 1], curve0[i]);
11243	}
11244
11245	// joining the two area curves
11246	ctx.lineTo(curve1[len1 - 1].x, curve1[len1 - 1].y);
11247
11248	// building opposite area curve (reverse)
11249	for (i = len1 - 1; i > 0; --i) {
11250		helpers.canvas.lineTo(ctx, curve1[i], curve1[i - 1], true);
11251	}
11252}
11253
11254function doFill(ctx, points, mapper, view, color, loop) {
11255	var count = points.length;
11256	var span = view.spanGaps;
11257	var curve0 = [];
11258	var curve1 = [];
11259	var len0 = 0;
11260	var len1 = 0;
11261	var i, ilen, index, p0, p1, d0, d1;
11262
11263	ctx.beginPath();
11264
11265	for (i = 0, ilen = (count + !!loop); i < ilen; ++i) {
11266		index = i % count;
11267		p0 = points[index]._view;
11268		p1 = mapper(p0, index, view);
11269		d0 = isDrawable(p0);
11270		d1 = isDrawable(p1);
11271
11272		if (d0 && d1) {
11273			len0 = curve0.push(p0);
11274			len1 = curve1.push(p1);
11275		} else if (len0 && len1) {
11276			if (!span) {
11277				drawArea(ctx, curve0, curve1, len0, len1);
11278				len0 = len1 = 0;
11279				curve0 = [];
11280				curve1 = [];
11281			} else {
11282				if (d0) {
11283					curve0.push(p0);
11284				}
11285				if (d1) {
11286					curve1.push(p1);
11287				}
11288			}
11289		}
11290	}
11291
11292	drawArea(ctx, curve0, curve1, len0, len1);
11293
11294	ctx.closePath();
11295	ctx.fillStyle = color;
11296	ctx.fill();
11297}
11298
11299module.exports = {
11300	id: 'filler',
11301
11302	afterDatasetsUpdate: function(chart, options) {
11303		var count = (chart.data.datasets || []).length;
11304		var propagate = options.propagate;
11305		var sources = [];
11306		var meta, i, el, source;
11307
11308		for (i = 0; i < count; ++i) {
11309			meta = chart.getDatasetMeta(i);
11310			el = meta.dataset;
11311			source = null;
11312
11313			if (el && el._model && el instanceof elements.Line) {
11314				source = {
11315					visible: chart.isDatasetVisible(i),
11316					fill: decodeFill(el, i, count),
11317					chart: chart,
11318					el: el
11319				};
11320			}
11321
11322			meta.$filler = source;
11323			sources.push(source);
11324		}
11325
11326		for (i = 0; i < count; ++i) {
11327			source = sources[i];
11328			if (!source) {
11329				continue;
11330			}
11331
11332			source.fill = resolveTarget(sources, i, propagate);
11333			source.boundary = computeBoundary(source);
11334			source.mapper = createMapper(source);
11335		}
11336	},
11337
11338	beforeDatasetDraw: function(chart, args) {
11339		var meta = args.meta.$filler;
11340		if (!meta) {
11341			return;
11342		}
11343
11344		var ctx = chart.ctx;
11345		var el = meta.el;
11346		var view = el._view;
11347		var points = el._children || [];
11348		var mapper = meta.mapper;
11349		var color = view.backgroundColor || defaults.global.defaultColor;
11350
11351		if (mapper && color && points.length) {
11352			helpers.canvas.clipArea(ctx, chart.chartArea);
11353			doFill(ctx, points, mapper, view, color, el._loop);
11354			helpers.canvas.unclipArea(ctx);
11355		}
11356	}
11357};
11358
11359},{"25":25,"40":40,"45":45}],51:[function(require,module,exports){
11360'use strict';
11361
11362var defaults = require(25);
11363var Element = require(26);
11364var helpers = require(45);
11365var layouts = require(30);
11366
11367var noop = helpers.noop;
11368
11369defaults._set('global', {
11370	legend: {
11371		display: true,
11372		position: 'top',
11373		fullWidth: true,
11374		reverse: false,
11375		weight: 1000,
11376
11377		// a callback that will handle
11378		onClick: function(e, legendItem) {
11379			var index = legendItem.datasetIndex;
11380			var ci = this.chart;
11381			var meta = ci.getDatasetMeta(index);
11382
11383			// See controller.isDatasetVisible comment
11384			meta.hidden = meta.hidden === null ? !ci.data.datasets[index].hidden : null;
11385
11386			// We hid a dataset ... rerender the chart
11387			ci.update();
11388		},
11389
11390		onHover: null,
11391
11392		labels: {
11393			boxWidth: 40,
11394			padding: 10,
11395			// Generates labels shown in the legend
11396			// Valid properties to return:
11397			// text : text to display
11398			// fillStyle : fill of coloured box
11399			// strokeStyle: stroke of coloured box
11400			// hidden : if this legend item refers to a hidden item
11401			// lineCap : cap style for line
11402			// lineDash
11403			// lineDashOffset :
11404			// lineJoin :
11405			// lineWidth :
11406			generateLabels: function(chart) {
11407				var data = chart.data;
11408				return helpers.isArray(data.datasets) ? data.datasets.map(function(dataset, i) {
11409					return {
11410						text: dataset.label,
11411						fillStyle: (!helpers.isArray(dataset.backgroundColor) ? dataset.backgroundColor : dataset.backgroundColor[0]),
11412						hidden: !chart.isDatasetVisible(i),
11413						lineCap: dataset.borderCapStyle,
11414						lineDash: dataset.borderDash,
11415						lineDashOffset: dataset.borderDashOffset,
11416						lineJoin: dataset.borderJoinStyle,
11417						lineWidth: dataset.borderWidth,
11418						strokeStyle: dataset.borderColor,
11419						pointStyle: dataset.pointStyle,
11420
11421						// Below is extra data used for toggling the datasets
11422						datasetIndex: i
11423					};
11424				}, this) : [];
11425			}
11426		}
11427	},
11428
11429	legendCallback: function(chart) {
11430		var text = [];
11431		text.push('<ul class="' + chart.id + '-legend">');
11432		for (var i = 0; i < chart.data.datasets.length; i++) {
11433			text.push('<li><span style="background-color:' + chart.data.datasets[i].backgroundColor + '"></span>');
11434			if (chart.data.datasets[i].label) {
11435				text.push(chart.data.datasets[i].label);
11436			}
11437			text.push('</li>');
11438		}
11439		text.push('</ul>');
11440		return text.join('');
11441	}
11442});
11443
11444/**
11445 * Helper function to get the box width based on the usePointStyle option
11446 * @param labelopts {Object} the label options on the legend
11447 * @param fontSize {Number} the label font size
11448 * @return {Number} width of the color box area
11449 */
11450function getBoxWidth(labelOpts, fontSize) {
11451	return labelOpts.usePointStyle ?
11452		fontSize * Math.SQRT2 :
11453		labelOpts.boxWidth;
11454}
11455
11456/**
11457 * IMPORTANT: this class is exposed publicly as Chart.Legend, backward compatibility required!
11458 */
11459var Legend = Element.extend({
11460
11461	initialize: function(config) {
11462		helpers.extend(this, config);
11463
11464		// Contains hit boxes for each dataset (in dataset order)
11465		this.legendHitBoxes = [];
11466
11467		// Are we in doughnut mode which has a different data type
11468		this.doughnutMode = false;
11469	},
11470
11471	// These methods are ordered by lifecycle. Utilities then follow.
11472	// Any function defined here is inherited by all legend types.
11473	// Any function can be extended by the legend type
11474
11475	beforeUpdate: noop,
11476	update: function(maxWidth, maxHeight, margins) {
11477		var me = this;
11478
11479		// Update Lifecycle - Probably don't want to ever extend or overwrite this function ;)
11480		me.beforeUpdate();
11481
11482		// Absorb the master measurements
11483		me.maxWidth = maxWidth;
11484		me.maxHeight = maxHeight;
11485		me.margins = margins;
11486
11487		// Dimensions
11488		me.beforeSetDimensions();
11489		me.setDimensions();
11490		me.afterSetDimensions();
11491		// Labels
11492		me.beforeBuildLabels();
11493		me.buildLabels();
11494		me.afterBuildLabels();
11495
11496		// Fit
11497		me.beforeFit();
11498		me.fit();
11499		me.afterFit();
11500		//
11501		me.afterUpdate();
11502
11503		return me.minSize;
11504	},
11505	afterUpdate: noop,
11506
11507	//
11508
11509	beforeSetDimensions: noop,
11510	setDimensions: function() {
11511		var me = this;
11512		// Set the unconstrained dimension before label rotation
11513		if (me.isHorizontal()) {
11514			// Reset position before calculating rotation
11515			me.width = me.maxWidth;
11516			me.left = 0;
11517			me.right = me.width;
11518		} else {
11519			me.height = me.maxHeight;
11520
11521			// Reset position before calculating rotation
11522			me.top = 0;
11523			me.bottom = me.height;
11524		}
11525
11526		// Reset padding
11527		me.paddingLeft = 0;
11528		me.paddingTop = 0;
11529		me.paddingRight = 0;
11530		me.paddingBottom = 0;
11531
11532		// Reset minSize
11533		me.minSize = {
11534			width: 0,
11535			height: 0
11536		};
11537	},
11538	afterSetDimensions: noop,
11539
11540	//
11541
11542	beforeBuildLabels: noop,
11543	buildLabels: function() {
11544		var me = this;
11545		var labelOpts = me.options.labels || {};
11546		var legendItems = helpers.callback(labelOpts.generateLabels, [me.chart], me) || [];
11547
11548		if (labelOpts.filter) {
11549			legendItems = legendItems.filter(function(item) {
11550				return labelOpts.filter(item, me.chart.data);
11551			});
11552		}
11553
11554		if (me.options.reverse) {
11555			legendItems.reverse();
11556		}
11557
11558		me.legendItems = legendItems;
11559	},
11560	afterBuildLabels: noop,
11561
11562	//
11563
11564	beforeFit: noop,
11565	fit: function() {
11566		var me = this;
11567		var opts = me.options;
11568		var labelOpts = opts.labels;
11569		var display = opts.display;
11570
11571		var ctx = me.ctx;
11572
11573		var globalDefault = defaults.global;
11574		var valueOrDefault = helpers.valueOrDefault;
11575		var fontSize = valueOrDefault(labelOpts.fontSize, globalDefault.defaultFontSize);
11576		var fontStyle = valueOrDefault(labelOpts.fontStyle, globalDefault.defaultFontStyle);
11577		var fontFamily = valueOrDefault(labelOpts.fontFamily, globalDefault.defaultFontFamily);
11578		var labelFont = helpers.fontString(fontSize, fontStyle, fontFamily);
11579
11580		// Reset hit boxes
11581		var hitboxes = me.legendHitBoxes = [];
11582
11583		var minSize = me.minSize;
11584		var isHorizontal = me.isHorizontal();
11585
11586		if (isHorizontal) {
11587			minSize.width = me.maxWidth; // fill all the width
11588			minSize.height = display ? 10 : 0;
11589		} else {
11590			minSize.width = display ? 10 : 0;
11591			minSize.height = me.maxHeight; // fill all the height
11592		}
11593
11594		// Increase sizes here
11595		if (display) {
11596			ctx.font = labelFont;
11597
11598			if (isHorizontal) {
11599				// Labels
11600
11601				// Width of each line of legend boxes. Labels wrap onto multiple lines when there are too many to fit on one
11602				var lineWidths = me.lineWidths = [0];
11603				var totalHeight = me.legendItems.length ? fontSize + (labelOpts.padding) : 0;
11604
11605				ctx.textAlign = 'left';
11606				ctx.textBaseline = 'top';
11607
11608				helpers.each(me.legendItems, function(legendItem, i) {
11609					var boxWidth = getBoxWidth(labelOpts, fontSize);
11610					var width = boxWidth + (fontSize / 2) + ctx.measureText(legendItem.text).width;
11611
11612					if (lineWidths[lineWidths.length - 1] + width + labelOpts.padding >= me.width) {
11613						totalHeight += fontSize + (labelOpts.padding);
11614						lineWidths[lineWidths.length] = me.left;
11615					}
11616
11617					// Store the hitbox width and height here. Final position will be updated in `draw`
11618					hitboxes[i] = {
11619						left: 0,
11620						top: 0,
11621						width: width,
11622						height: fontSize
11623					};
11624
11625					lineWidths[lineWidths.length - 1] += width + labelOpts.padding;
11626				});
11627
11628				minSize.height += totalHeight;
11629
11630			} else {
11631				var vPadding = labelOpts.padding;
11632				var columnWidths = me.columnWidths = [];
11633				var totalWidth = labelOpts.padding;
11634				var currentColWidth = 0;
11635				var currentColHeight = 0;
11636				var itemHeight = fontSize + vPadding;
11637
11638				helpers.each(me.legendItems, function(legendItem, i) {
11639					var boxWidth = getBoxWidth(labelOpts, fontSize);
11640					var itemWidth = boxWidth + (fontSize / 2) + ctx.measureText(legendItem.text).width;
11641
11642					// If too tall, go to new column
11643					if (currentColHeight + itemHeight > minSize.height) {
11644						totalWidth += currentColWidth + labelOpts.padding;
11645						columnWidths.push(currentColWidth); // previous column width
11646
11647						currentColWidth = 0;
11648						currentColHeight = 0;
11649					}
11650
11651					// Get max width
11652					currentColWidth = Math.max(currentColWidth, itemWidth);
11653					currentColHeight += itemHeight;
11654
11655					// Store the hitbox width and height here. Final position will be updated in `draw`
11656					hitboxes[i] = {
11657						left: 0,
11658						top: 0,
11659						width: itemWidth,
11660						height: fontSize
11661					};
11662				});
11663
11664				totalWidth += currentColWidth;
11665				columnWidths.push(currentColWidth);
11666				minSize.width += totalWidth;
11667			}
11668		}
11669
11670		me.width = minSize.width;
11671		me.height = minSize.height;
11672	},
11673	afterFit: noop,
11674
11675	// Shared Methods
11676	isHorizontal: function() {
11677		return this.options.position === 'top' || this.options.position === 'bottom';
11678	},
11679
11680	// Actually draw the legend on the canvas
11681	draw: function() {
11682		var me = this;
11683		var opts = me.options;
11684		var labelOpts = opts.labels;
11685		var globalDefault = defaults.global;
11686		var lineDefault = globalDefault.elements.line;
11687		var legendWidth = me.width;
11688		var lineWidths = me.lineWidths;
11689
11690		if (opts.display) {
11691			var ctx = me.ctx;
11692			var valueOrDefault = helpers.valueOrDefault;
11693			var fontColor = valueOrDefault(labelOpts.fontColor, globalDefault.defaultFontColor);
11694			var fontSize = valueOrDefault(labelOpts.fontSize, globalDefault.defaultFontSize);
11695			var fontStyle = valueOrDefault(labelOpts.fontStyle, globalDefault.defaultFontStyle);
11696			var fontFamily = valueOrDefault(labelOpts.fontFamily, globalDefault.defaultFontFamily);
11697			var labelFont = helpers.fontString(fontSize, fontStyle, fontFamily);
11698			var cursor;
11699
11700			// Canvas setup
11701			ctx.textAlign = 'left';
11702			ctx.textBaseline = 'middle';
11703			ctx.lineWidth = 0.5;
11704			ctx.strokeStyle = fontColor; // for strikethrough effect
11705			ctx.fillStyle = fontColor; // render in correct colour
11706			ctx.font = labelFont;
11707
11708			var boxWidth = getBoxWidth(labelOpts, fontSize);
11709			var hitboxes = me.legendHitBoxes;
11710
11711			// current position
11712			var drawLegendBox = function(x, y, legendItem) {
11713				if (isNaN(boxWidth) || boxWidth <= 0) {
11714					return;
11715				}
11716
11717				// Set the ctx for the box
11718				ctx.save();
11719
11720				ctx.fillStyle = valueOrDefault(legendItem.fillStyle, globalDefault.defaultColor);
11721				ctx.lineCap = valueOrDefault(legendItem.lineCap, lineDefault.borderCapStyle);
11722				ctx.lineDashOffset = valueOrDefault(legendItem.lineDashOffset, lineDefault.borderDashOffset);
11723				ctx.lineJoin = valueOrDefault(legendItem.lineJoin, lineDefault.borderJoinStyle);
11724				ctx.lineWidth = valueOrDefault(legendItem.lineWidth, lineDefault.borderWidth);
11725				ctx.strokeStyle = valueOrDefault(legendItem.strokeStyle, globalDefault.defaultColor);
11726				var isLineWidthZero = (valueOrDefault(legendItem.lineWidth, lineDefault.borderWidth) === 0);
11727
11728				if (ctx.setLineDash) {
11729					// IE 9 and 10 do not support line dash
11730					ctx.setLineDash(valueOrDefault(legendItem.lineDash, lineDefault.borderDash));
11731				}
11732
11733				if (opts.labels && opts.labels.usePointStyle) {
11734					// Recalculate x and y for drawPoint() because its expecting
11735					// x and y to be center of figure (instead of top left)
11736					var radius = fontSize * Math.SQRT2 / 2;
11737					var offSet = radius / Math.SQRT2;
11738					var centerX = x + offSet;
11739					var centerY = y + offSet;
11740
11741					// Draw pointStyle as legend symbol
11742					helpers.canvas.drawPoint(ctx, legendItem.pointStyle, radius, centerX, centerY);
11743				} else {
11744					// Draw box as legend symbol
11745					if (!isLineWidthZero) {
11746						ctx.strokeRect(x, y, boxWidth, fontSize);
11747					}
11748					ctx.fillRect(x, y, boxWidth, fontSize);
11749				}
11750
11751				ctx.restore();
11752			};
11753			var fillText = function(x, y, legendItem, textWidth) {
11754				var halfFontSize = fontSize / 2;
11755				var xLeft = boxWidth + halfFontSize + x;
11756				var yMiddle = y + halfFontSize;
11757
11758				ctx.fillText(legendItem.text, xLeft, yMiddle);
11759
11760				if (legendItem.hidden) {
11761					// Strikethrough the text if hidden
11762					ctx.beginPath();
11763					ctx.lineWidth = 2;
11764					ctx.moveTo(xLeft, yMiddle);
11765					ctx.lineTo(xLeft + textWidth, yMiddle);
11766					ctx.stroke();
11767				}
11768			};
11769
11770			// Horizontal
11771			var isHorizontal = me.isHorizontal();
11772			if (isHorizontal) {
11773				cursor = {
11774					x: me.left + ((legendWidth - lineWidths[0]) / 2),
11775					y: me.top + labelOpts.padding,
11776					line: 0
11777				};
11778			} else {
11779				cursor = {
11780					x: me.left + labelOpts.padding,
11781					y: me.top + labelOpts.padding,
11782					line: 0
11783				};
11784			}
11785
11786			var itemHeight = fontSize + labelOpts.padding;
11787			helpers.each(me.legendItems, function(legendItem, i) {
11788				var textWidth = ctx.measureText(legendItem.text).width;
11789				var width = boxWidth + (fontSize / 2) + textWidth;
11790				var x = cursor.x;
11791				var y = cursor.y;
11792
11793				if (isHorizontal) {
11794					if (x + width >= legendWidth) {
11795						y = cursor.y += itemHeight;
11796						cursor.line++;
11797						x = cursor.x = me.left + ((legendWidth - lineWidths[cursor.line]) / 2);
11798					}
11799				} else if (y + itemHeight > me.bottom) {
11800					x = cursor.x = x + me.columnWidths[cursor.line] + labelOpts.padding;
11801					y = cursor.y = me.top + labelOpts.padding;
11802					cursor.line++;
11803				}
11804
11805				drawLegendBox(x, y, legendItem);
11806
11807				hitboxes[i].left = x;
11808				hitboxes[i].top = y;
11809
11810				// Fill the actual label
11811				fillText(x, y, legendItem, textWidth);
11812
11813				if (isHorizontal) {
11814					cursor.x += width + (labelOpts.padding);
11815				} else {
11816					cursor.y += itemHeight;
11817				}
11818
11819			});
11820		}
11821	},
11822
11823	/**
11824	 * Handle an event
11825	 * @private
11826	 * @param {IEvent} event - The event to handle
11827	 * @return {Boolean} true if a change occured
11828	 */
11829	handleEvent: function(e) {
11830		var me = this;
11831		var opts = me.options;
11832		var type = e.type === 'mouseup' ? 'click' : e.type;
11833		var changed = false;
11834
11835		if (type === 'mousemove') {
11836			if (!opts.onHover) {
11837				return;
11838			}
11839		} else if (type === 'click') {
11840			if (!opts.onClick) {
11841				return;
11842			}
11843		} else {
11844			return;
11845		}
11846
11847		// Chart event already has relative position in it
11848		var x = e.x;
11849		var y = e.y;
11850
11851		if (x >= me.left && x <= me.right && y >= me.top && y <= me.bottom) {
11852			// See if we are touching one of the dataset boxes
11853			var lh = me.legendHitBoxes;
11854			for (var i = 0; i < lh.length; ++i) {
11855				var hitBox = lh[i];
11856
11857				if (x >= hitBox.left && x <= hitBox.left + hitBox.width && y >= hitBox.top && y <= hitBox.top + hitBox.height) {
11858					// Touching an element
11859					if (type === 'click') {
11860						// use e.native for backwards compatibility
11861						opts.onClick.call(me, e.native, me.legendItems[i]);
11862						changed = true;
11863						break;
11864					} else if (type === 'mousemove') {
11865						// use e.native for backwards compatibility
11866						opts.onHover.call(me, e.native, me.legendItems[i]);
11867						changed = true;
11868						break;
11869					}
11870				}
11871			}
11872		}
11873
11874		return changed;
11875	}
11876});
11877
11878function createNewLegendAndAttach(chart, legendOpts) {
11879	var legend = new Legend({
11880		ctx: chart.ctx,
11881		options: legendOpts,
11882		chart: chart
11883	});
11884
11885	layouts.configure(chart, legend, legendOpts);
11886	layouts.addBox(chart, legend);
11887	chart.legend = legend;
11888}
11889
11890module.exports = {
11891	id: 'legend',
11892
11893	/**
11894	 * Backward compatibility: since 2.1.5, the legend is registered as a plugin, making
11895	 * Chart.Legend obsolete. To avoid a breaking change, we export the Legend as part of
11896	 * the plugin, which one will be re-exposed in the chart.js file.
11897	 * https://github.com/chartjs/Chart.js/pull/2640
11898	 * @private
11899	 */
11900	_element: Legend,
11901
11902	beforeInit: function(chart) {
11903		var legendOpts = chart.options.legend;
11904
11905		if (legendOpts) {
11906			createNewLegendAndAttach(chart, legendOpts);
11907		}
11908	},
11909
11910	beforeUpdate: function(chart) {
11911		var legendOpts = chart.options.legend;
11912		var legend = chart.legend;
11913
11914		if (legendOpts) {
11915			helpers.mergeIf(legendOpts, defaults.global.legend);
11916
11917			if (legend) {
11918				layouts.configure(chart, legend, legendOpts);
11919				legend.options = legendOpts;
11920			} else {
11921				createNewLegendAndAttach(chart, legendOpts);
11922			}
11923		} else if (legend) {
11924			layouts.removeBox(chart, legend);
11925			delete chart.legend;
11926		}
11927	},
11928
11929	afterEvent: function(chart, e) {
11930		var legend = chart.legend;
11931		if (legend) {
11932			legend.handleEvent(e);
11933		}
11934	}
11935};
11936
11937},{"25":25,"26":26,"30":30,"45":45}],52:[function(require,module,exports){
11938'use strict';
11939
11940var defaults = require(25);
11941var Element = require(26);
11942var helpers = require(45);
11943var layouts = require(30);
11944
11945var noop = helpers.noop;
11946
11947defaults._set('global', {
11948	title: {
11949		display: false,
11950		fontStyle: 'bold',
11951		fullWidth: true,
11952		lineHeight: 1.2,
11953		padding: 10,
11954		position: 'top',
11955		text: '',
11956		weight: 2000         // by default greater than legend (1000) to be above
11957	}
11958});
11959
11960/**
11961 * IMPORTANT: this class is exposed publicly as Chart.Legend, backward compatibility required!
11962 */
11963var Title = Element.extend({
11964	initialize: function(config) {
11965		var me = this;
11966		helpers.extend(me, config);
11967
11968		// Contains hit boxes for each dataset (in dataset order)
11969		me.legendHitBoxes = [];
11970	},
11971
11972	// These methods are ordered by lifecycle. Utilities then follow.
11973
11974	beforeUpdate: noop,
11975	update: function(maxWidth, maxHeight, margins) {
11976		var me = this;
11977
11978		// Update Lifecycle - Probably don't want to ever extend or overwrite this function ;)
11979		me.beforeUpdate();
11980
11981		// Absorb the master measurements
11982		me.maxWidth = maxWidth;
11983		me.maxHeight = maxHeight;
11984		me.margins = margins;
11985
11986		// Dimensions
11987		me.beforeSetDimensions();
11988		me.setDimensions();
11989		me.afterSetDimensions();
11990		// Labels
11991		me.beforeBuildLabels();
11992		me.buildLabels();
11993		me.afterBuildLabels();
11994
11995		// Fit
11996		me.beforeFit();
11997		me.fit();
11998		me.afterFit();
11999		//
12000		me.afterUpdate();
12001
12002		return me.minSize;
12003
12004	},
12005	afterUpdate: noop,
12006
12007	//
12008
12009	beforeSetDimensions: noop,
12010	setDimensions: function() {
12011		var me = this;
12012		// Set the unconstrained dimension before label rotation
12013		if (me.isHorizontal()) {
12014			// Reset position before calculating rotation
12015			me.width = me.maxWidth;
12016			me.left = 0;
12017			me.right = me.width;
12018		} else {
12019			me.height = me.maxHeight;
12020
12021			// Reset position before calculating rotation
12022			me.top = 0;
12023			me.bottom = me.height;
12024		}
12025
12026		// Reset padding
12027		me.paddingLeft = 0;
12028		me.paddingTop = 0;
12029		me.paddingRight = 0;
12030		me.paddingBottom = 0;
12031
12032		// Reset minSize
12033		me.minSize = {
12034			width: 0,
12035			height: 0
12036		};
12037	},
12038	afterSetDimensions: noop,
12039
12040	//
12041
12042	beforeBuildLabels: noop,
12043	buildLabels: noop,
12044	afterBuildLabels: noop,
12045
12046	//
12047
12048	beforeFit: noop,
12049	fit: function() {
12050		var me = this;
12051		var valueOrDefault = helpers.valueOrDefault;
12052		var opts = me.options;
12053		var display = opts.display;
12054		var fontSize = valueOrDefault(opts.fontSize, defaults.global.defaultFontSize);
12055		var minSize = me.minSize;
12056		var lineCount = helpers.isArray(opts.text) ? opts.text.length : 1;
12057		var lineHeight = helpers.options.toLineHeight(opts.lineHeight, fontSize);
12058		var textSize = display ? (lineCount * lineHeight) + (opts.padding * 2) : 0;
12059
12060		if (me.isHorizontal()) {
12061			minSize.width = me.maxWidth; // fill all the width
12062			minSize.height = textSize;
12063		} else {
12064			minSize.width = textSize;
12065			minSize.height = me.maxHeight; // fill all the height
12066		}
12067
12068		me.width = minSize.width;
12069		me.height = minSize.height;
12070
12071	},
12072	afterFit: noop,
12073
12074	// Shared Methods
12075	isHorizontal: function() {
12076		var pos = this.options.position;
12077		return pos === 'top' || pos === 'bottom';
12078	},
12079
12080	// Actually draw the title block on the canvas
12081	draw: function() {
12082		var me = this;
12083		var ctx = me.ctx;
12084		var valueOrDefault = helpers.valueOrDefault;
12085		var opts = me.options;
12086		var globalDefaults = defaults.global;
12087
12088		if (opts.display) {
12089			var fontSize = valueOrDefault(opts.fontSize, globalDefaults.defaultFontSize);
12090			var fontStyle = valueOrDefault(opts.fontStyle, globalDefaults.defaultFontStyle);
12091			var fontFamily = valueOrDefault(opts.fontFamily, globalDefaults.defaultFontFamily);
12092			var titleFont = helpers.fontString(fontSize, fontStyle, fontFamily);
12093			var lineHeight = helpers.options.toLineHeight(opts.lineHeight, fontSize);
12094			var offset = lineHeight / 2 + opts.padding;
12095			var rotation = 0;
12096			var top = me.top;
12097			var left = me.left;
12098			var bottom = me.bottom;
12099			var right = me.right;
12100			var maxWidth, titleX, titleY;
12101
12102			ctx.fillStyle = valueOrDefault(opts.fontColor, globalDefaults.defaultFontColor); // render in correct colour
12103			ctx.font = titleFont;
12104
12105			// Horizontal
12106			if (me.isHorizontal()) {
12107				titleX = left + ((right - left) / 2); // midpoint of the width
12108				titleY = top + offset;
12109				maxWidth = right - left;
12110			} else {
12111				titleX = opts.position === 'left' ? left + offset : right - offset;
12112				titleY = top + ((bottom - top) / 2);
12113				maxWidth = bottom - top;
12114				rotation = Math.PI * (opts.position === 'left' ? -0.5 : 0.5);
12115			}
12116
12117			ctx.save();
12118			ctx.translate(titleX, titleY);
12119			ctx.rotate(rotation);
12120			ctx.textAlign = 'center';
12121			ctx.textBaseline = 'middle';
12122
12123			var text = opts.text;
12124			if (helpers.isArray(text)) {
12125				var y = 0;
12126				for (var i = 0; i < text.length; ++i) {
12127					ctx.fillText(text[i], 0, y, maxWidth);
12128					y += lineHeight;
12129				}
12130			} else {
12131				ctx.fillText(text, 0, 0, maxWidth);
12132			}
12133
12134			ctx.restore();
12135		}
12136	}
12137});
12138
12139function createNewTitleBlockAndAttach(chart, titleOpts) {
12140	var title = new Title({
12141		ctx: chart.ctx,
12142		options: titleOpts,
12143		chart: chart
12144	});
12145
12146	layouts.configure(chart, title, titleOpts);
12147	layouts.addBox(chart, title);
12148	chart.titleBlock = title;
12149}
12150
12151module.exports = {
12152	id: 'title',
12153
12154	/**
12155	 * Backward compatibility: since 2.1.5, the title is registered as a plugin, making
12156	 * Chart.Title obsolete. To avoid a breaking change, we export the Title as part of
12157	 * the plugin, which one will be re-exposed in the chart.js file.
12158	 * https://github.com/chartjs/Chart.js/pull/2640
12159	 * @private
12160	 */
12161	_element: Title,
12162
12163	beforeInit: function(chart) {
12164		var titleOpts = chart.options.title;
12165
12166		if (titleOpts) {
12167			createNewTitleBlockAndAttach(chart, titleOpts);
12168		}
12169	},
12170
12171	beforeUpdate: function(chart) {
12172		var titleOpts = chart.options.title;
12173		var titleBlock = chart.titleBlock;
12174
12175		if (titleOpts) {
12176			helpers.mergeIf(titleOpts, defaults.global.title);
12177
12178			if (titleBlock) {
12179				layouts.configure(chart, titleBlock, titleOpts);
12180				titleBlock.options = titleOpts;
12181			} else {
12182				createNewTitleBlockAndAttach(chart, titleOpts);
12183			}
12184		} else if (titleBlock) {
12185			layouts.removeBox(chart, titleBlock);
12186			delete chart.titleBlock;
12187		}
12188	}
12189};
12190
12191},{"25":25,"26":26,"30":30,"45":45}],53:[function(require,module,exports){
12192'use strict';
12193
12194module.exports = function(Chart) {
12195
12196	// Default config for a category scale
12197	var defaultConfig = {
12198		position: 'bottom'
12199	};
12200
12201	var DatasetScale = Chart.Scale.extend({
12202		/**
12203		* Internal function to get the correct labels. If data.xLabels or data.yLabels are defined, use those
12204		* else fall back to data.labels
12205		* @private
12206		*/
12207		getLabels: function() {
12208			var data = this.chart.data;
12209			return this.options.labels || (this.isHorizontal() ? data.xLabels : data.yLabels) || data.labels;
12210		},
12211
12212		determineDataLimits: function() {
12213			var me = this;
12214			var labels = me.getLabels();
12215			me.minIndex = 0;
12216			me.maxIndex = labels.length - 1;
12217			var findIndex;
12218
12219			if (me.options.ticks.min !== undefined) {
12220				// user specified min value
12221				findIndex = labels.indexOf(me.options.ticks.min);
12222				me.minIndex = findIndex !== -1 ? findIndex : me.minIndex;
12223			}
12224
12225			if (me.options.ticks.max !== undefined) {
12226				// user specified max value
12227				findIndex = labels.indexOf(me.options.ticks.max);
12228				me.maxIndex = findIndex !== -1 ? findIndex : me.maxIndex;
12229			}
12230
12231			me.min = labels[me.minIndex];
12232			me.max = labels[me.maxIndex];
12233		},
12234
12235		buildTicks: function() {
12236			var me = this;
12237			var labels = me.getLabels();
12238			// If we are viewing some subset of labels, slice the original array
12239			me.ticks = (me.minIndex === 0 && me.maxIndex === labels.length - 1) ? labels : labels.slice(me.minIndex, me.maxIndex + 1);
12240		},
12241
12242		getLabelForIndex: function(index, datasetIndex) {
12243			var me = this;
12244			var data = me.chart.data;
12245			var isHorizontal = me.isHorizontal();
12246
12247			if (data.yLabels && !isHorizontal) {
12248				return me.getRightValue(data.datasets[datasetIndex].data[index]);
12249			}
12250			return me.ticks[index - me.minIndex];
12251		},
12252
12253		// Used to get data value locations.  Value can either be an index or a numerical value
12254		getPixelForValue: function(value, index) {
12255			var me = this;
12256			var offset = me.options.offset;
12257			// 1 is added because we need the length but we have the indexes
12258			var offsetAmt = Math.max((me.maxIndex + 1 - me.minIndex - (offset ? 0 : 1)), 1);
12259
12260			// If value is a data object, then index is the index in the data array,
12261			// not the index of the scale. We need to change that.
12262			var valueCategory;
12263			if (value !== undefined && value !== null) {
12264				valueCategory = me.isHorizontal() ? value.x : value.y;
12265			}
12266			if (valueCategory !== undefined || (value !== undefined && isNaN(index))) {
12267				var labels = me.getLabels();
12268				value = valueCategory || value;
12269				var idx = labels.indexOf(value);
12270				index = idx !== -1 ? idx : index;
12271			}
12272
12273			if (me.isHorizontal()) {
12274				var valueWidth = me.width / offsetAmt;
12275				var widthOffset = (valueWidth * (index - me.minIndex));
12276
12277				if (offset) {
12278					widthOffset += (valueWidth / 2);
12279				}
12280
12281				return me.left + Math.round(widthOffset);
12282			}
12283			var valueHeight = me.height / offsetAmt;
12284			var heightOffset = (valueHeight * (index - me.minIndex));
12285
12286			if (offset) {
12287				heightOffset += (valueHeight / 2);
12288			}
12289
12290			return me.top + Math.round(heightOffset);
12291		},
12292		getPixelForTick: function(index) {
12293			return this.getPixelForValue(this.ticks[index], index + this.minIndex, null);
12294		},
12295		getValueForPixel: function(pixel) {
12296			var me = this;
12297			var offset = me.options.offset;
12298			var value;
12299			var offsetAmt = Math.max((me._ticks.length - (offset ? 0 : 1)), 1);
12300			var horz = me.isHorizontal();
12301			var valueDimension = (horz ? me.width : me.height) / offsetAmt;
12302
12303			pixel -= horz ? me.left : me.top;
12304
12305			if (offset) {
12306				pixel -= (valueDimension / 2);
12307			}
12308
12309			if (pixel <= 0) {
12310				value = 0;
12311			} else {
12312				value = Math.round(pixel / valueDimension);
12313			}
12314
12315			return value + me.minIndex;
12316		},
12317		getBasePixel: function() {
12318			return this.bottom;
12319		}
12320	});
12321
12322	Chart.scaleService.registerScaleType('category', DatasetScale, defaultConfig);
12323
12324};
12325
12326},{}],54:[function(require,module,exports){
12327'use strict';
12328
12329var defaults = require(25);
12330var helpers = require(45);
12331var Ticks = require(34);
12332
12333module.exports = function(Chart) {
12334
12335	var defaultConfig = {
12336		position: 'left',
12337		ticks: {
12338			callback: Ticks.formatters.linear
12339		}
12340	};
12341
12342	var LinearScale = Chart.LinearScaleBase.extend({
12343
12344		determineDataLimits: function() {
12345			var me = this;
12346			var opts = me.options;
12347			var chart = me.chart;
12348			var data = chart.data;
12349			var datasets = data.datasets;
12350			var isHorizontal = me.isHorizontal();
12351			var DEFAULT_MIN = 0;
12352			var DEFAULT_MAX = 1;
12353
12354			function IDMatches(meta) {
12355				return isHorizontal ? meta.xAxisID === me.id : meta.yAxisID === me.id;
12356			}
12357
12358			// First Calculate the range
12359			me.min = null;
12360			me.max = null;
12361
12362			var hasStacks = opts.stacked;
12363			if (hasStacks === undefined) {
12364				helpers.each(datasets, function(dataset, datasetIndex) {
12365					if (hasStacks) {
12366						return;
12367					}
12368
12369					var meta = chart.getDatasetMeta(datasetIndex);
12370					if (chart.isDatasetVisible(datasetIndex) && IDMatches(meta) &&
12371						meta.stack !== undefined) {
12372						hasStacks = true;
12373					}
12374				});
12375			}
12376
12377			if (opts.stacked || hasStacks) {
12378				var valuesPerStack = {};
12379
12380				helpers.each(datasets, function(dataset, datasetIndex) {
12381					var meta = chart.getDatasetMeta(datasetIndex);
12382					var key = [
12383						meta.type,
12384						// we have a separate stack for stack=undefined datasets when the opts.stacked is undefined
12385						((opts.stacked === undefined && meta.stack === undefined) ? datasetIndex : ''),
12386						meta.stack
12387					].join('.');
12388
12389					if (valuesPerStack[key] === undefined) {
12390						valuesPerStack[key] = {
12391							positiveValues: [],
12392							negativeValues: []
12393						};
12394					}
12395
12396					// Store these per type
12397					var positiveValues = valuesPerStack[key].positiveValues;
12398					var negativeValues = valuesPerStack[key].negativeValues;
12399
12400					if (chart.isDatasetVisible(datasetIndex) && IDMatches(meta)) {
12401						helpers.each(dataset.data, function(rawValue, index) {
12402							var value = +me.getRightValue(rawValue);
12403							if (isNaN(value) || meta.data[index].hidden) {
12404								return;
12405							}
12406
12407							positiveValues[index] = positiveValues[index] || 0;
12408							negativeValues[index] = negativeValues[index] || 0;
12409
12410							if (opts.relativePoints) {
12411								positiveValues[index] = 100;
12412							} else if (value < 0) {
12413								negativeValues[index] += value;
12414							} else {
12415								positiveValues[index] += value;
12416							}
12417						});
12418					}
12419				});
12420
12421				helpers.each(valuesPerStack, function(valuesForType) {
12422					var values = valuesForType.positiveValues.concat(valuesForType.negativeValues);
12423					var minVal = helpers.min(values);
12424					var maxVal = helpers.max(values);
12425					me.min = me.min === null ? minVal : Math.min(me.min, minVal);
12426					me.max = me.max === null ? maxVal : Math.max(me.max, maxVal);
12427				});
12428
12429			} else {
12430				helpers.each(datasets, function(dataset, datasetIndex) {
12431					var meta = chart.getDatasetMeta(datasetIndex);
12432					if (chart.isDatasetVisible(datasetIndex) && IDMatches(meta)) {
12433						helpers.each(dataset.data, function(rawValue, index) {
12434							var value = +me.getRightValue(rawValue);
12435							if (isNaN(value) || meta.data[index].hidden) {
12436								return;
12437							}
12438
12439							if (me.min === null) {
12440								me.min = value;
12441							} else if (value < me.min) {
12442								me.min = value;
12443							}
12444
12445							if (me.max === null) {
12446								me.max = value;
12447							} else if (value > me.max) {
12448								me.max = value;
12449							}
12450						});
12451					}
12452				});
12453			}
12454
12455			me.min = isFinite(me.min) && !isNaN(me.min) ? me.min : DEFAULT_MIN;
12456			me.max = isFinite(me.max) && !isNaN(me.max) ? me.max : DEFAULT_MAX;
12457
12458			// Common base implementation to handle ticks.min, ticks.max, ticks.beginAtZero
12459			this.handleTickRangeOptions();
12460		},
12461		getTickLimit: function() {
12462			var maxTicks;
12463			var me = this;
12464			var tickOpts = me.options.ticks;
12465
12466			if (me.isHorizontal()) {
12467				maxTicks = Math.min(tickOpts.maxTicksLimit ? tickOpts.maxTicksLimit : 11, Math.ceil(me.width / 50));
12468			} else {
12469				// The factor of 2 used to scale the font size has been experimentally determined.
12470				var tickFontSize = helpers.valueOrDefault(tickOpts.fontSize, defaults.global.defaultFontSize);
12471				maxTicks = Math.min(tickOpts.maxTicksLimit ? tickOpts.maxTicksLimit : 11, Math.ceil(me.height / (2 * tickFontSize)));
12472			}
12473
12474			return maxTicks;
12475		},
12476		// Called after the ticks are built. We need
12477		handleDirectionalChanges: function() {
12478			if (!this.isHorizontal()) {
12479				// We are in a vertical orientation. The top value is the highest. So reverse the array
12480				this.ticks.reverse();
12481			}
12482		},
12483		getLabelForIndex: function(index, datasetIndex) {
12484			return +this.getRightValue(this.chart.data.datasets[datasetIndex].data[index]);
12485		},
12486		// Utils
12487		getPixelForValue: function(value) {
12488			// This must be called after fit has been run so that
12489			// this.left, this.top, this.right, and this.bottom have been defined
12490			var me = this;
12491			var start = me.start;
12492
12493			var rightValue = +me.getRightValue(value);
12494			var pixel;
12495			var range = me.end - start;
12496
12497			if (me.isHorizontal()) {
12498				pixel = me.left + (me.width / range * (rightValue - start));
12499			} else {
12500				pixel = me.bottom - (me.height / range * (rightValue - start));
12501			}
12502			return pixel;
12503		},
12504		getValueForPixel: function(pixel) {
12505			var me = this;
12506			var isHorizontal = me.isHorizontal();
12507			var innerDimension = isHorizontal ? me.width : me.height;
12508			var offset = (isHorizontal ? pixel - me.left : me.bottom - pixel) / innerDimension;
12509			return me.start + ((me.end - me.start) * offset);
12510		},
12511		getPixelForTick: function(index) {
12512			return this.getPixelForValue(this.ticksAsNumbers[index]);
12513		}
12514	});
12515	Chart.scaleService.registerScaleType('linear', LinearScale, defaultConfig);
12516
12517};
12518
12519},{"25":25,"34":34,"45":45}],55:[function(require,module,exports){
12520'use strict';
12521
12522var helpers = require(45);
12523
12524/**
12525 * Generate a set of linear ticks
12526 * @param generationOptions the options used to generate the ticks
12527 * @param dataRange the range of the data
12528 * @returns {Array<Number>} array of tick values
12529 */
12530function generateTicks(generationOptions, dataRange) {
12531	var ticks = [];
12532	// To get a "nice" value for the tick spacing, we will use the appropriately named
12533	// "nice number" algorithm. See http://stackoverflow.com/questions/8506881/nice-label-algorithm-for-charts-with-minimum-ticks
12534	// for details.
12535
12536	var spacing;
12537	if (generationOptions.stepSize && generationOptions.stepSize > 0) {
12538		spacing = generationOptions.stepSize;
12539	} else {
12540		var niceRange = helpers.niceNum(dataRange.max - dataRange.min, false);
12541		spacing = helpers.niceNum(niceRange / (generationOptions.maxTicks - 1), true);
12542	}
12543	var niceMin = Math.floor(dataRange.min / spacing) * spacing;
12544	var niceMax = Math.ceil(dataRange.max / spacing) * spacing;
12545
12546	// If min, max and stepSize is set and they make an evenly spaced scale use it.
12547	if (generationOptions.min && generationOptions.max && generationOptions.stepSize) {
12548		// If very close to our whole number, use it.
12549		if (helpers.almostWhole((generationOptions.max - generationOptions.min) / generationOptions.stepSize, spacing / 1000)) {
12550			niceMin = generationOptions.min;
12551			niceMax = generationOptions.max;
12552		}
12553	}
12554
12555	var numSpaces = (niceMax - niceMin) / spacing;
12556	// If very close to our rounded value, use it.
12557	if (helpers.almostEquals(numSpaces, Math.round(numSpaces), spacing / 1000)) {
12558		numSpaces = Math.round(numSpaces);
12559	} else {
12560		numSpaces = Math.ceil(numSpaces);
12561	}
12562
12563	var precision = 1;
12564	if (spacing < 1) {
12565		precision = Math.pow(10, spacing.toString().length - 2);
12566		niceMin = Math.round(niceMin * precision) / precision;
12567		niceMax = Math.round(niceMax * precision) / precision;
12568	}
12569	ticks.push(generationOptions.min !== undefined ? generationOptions.min : niceMin);
12570	for (var j = 1; j < numSpaces; ++j) {
12571		ticks.push(Math.round((niceMin + j * spacing) * precision) / precision);
12572	}
12573	ticks.push(generationOptions.max !== undefined ? generationOptions.max : niceMax);
12574
12575	return ticks;
12576}
12577
12578
12579module.exports = function(Chart) {
12580
12581	var noop = helpers.noop;
12582
12583	Chart.LinearScaleBase = Chart.Scale.extend({
12584		getRightValue: function(value) {
12585			if (typeof value === 'string') {
12586				return +value;
12587			}
12588			return Chart.Scale.prototype.getRightValue.call(this, value);
12589		},
12590
12591		handleTickRangeOptions: function() {
12592			var me = this;
12593			var opts = me.options;
12594			var tickOpts = opts.ticks;
12595
12596			// If we are forcing it to begin at 0, but 0 will already be rendered on the chart,
12597			// do nothing since that would make the chart weird. If the user really wants a weird chart
12598			// axis, they can manually override it
12599			if (tickOpts.beginAtZero) {
12600				var minSign = helpers.sign(me.min);
12601				var maxSign = helpers.sign(me.max);
12602
12603				if (minSign < 0 && maxSign < 0) {
12604					// move the top up to 0
12605					me.max = 0;
12606				} else if (minSign > 0 && maxSign > 0) {
12607					// move the bottom down to 0
12608					me.min = 0;
12609				}
12610			}
12611
12612			var setMin = tickOpts.min !== undefined || tickOpts.suggestedMin !== undefined;
12613			var setMax = tickOpts.max !== undefined || tickOpts.suggestedMax !== undefined;
12614
12615			if (tickOpts.min !== undefined) {
12616				me.min = tickOpts.min;
12617			} else if (tickOpts.suggestedMin !== undefined) {
12618				if (me.min === null) {
12619					me.min = tickOpts.suggestedMin;
12620				} else {
12621					me.min = Math.min(me.min, tickOpts.suggestedMin);
12622				}
12623			}
12624
12625			if (tickOpts.max !== undefined) {
12626				me.max = tickOpts.max;
12627			} else if (tickOpts.suggestedMax !== undefined) {
12628				if (me.max === null) {
12629					me.max = tickOpts.suggestedMax;
12630				} else {
12631					me.max = Math.max(me.max, tickOpts.suggestedMax);
12632				}
12633			}
12634
12635			if (setMin !== setMax) {
12636				// We set the min or the max but not both.
12637				// So ensure that our range is good
12638				// Inverted or 0 length range can happen when
12639				// ticks.min is set, and no datasets are visible
12640				if (me.min >= me.max) {
12641					if (setMin) {
12642						me.max = me.min + 1;
12643					} else {
12644						me.min = me.max - 1;
12645					}
12646				}
12647			}
12648
12649			if (me.min === me.max) {
12650				me.max++;
12651
12652				if (!tickOpts.beginAtZero) {
12653					me.min--;
12654				}
12655			}
12656		},
12657		getTickLimit: noop,
12658		handleDirectionalChanges: noop,
12659
12660		buildTicks: function() {
12661			var me = this;
12662			var opts = me.options;
12663			var tickOpts = opts.ticks;
12664
12665			// Figure out what the max number of ticks we can support it is based on the size of
12666			// the axis area. For now, we say that the minimum tick spacing in pixels must be 50
12667			// We also limit the maximum number of ticks to 11 which gives a nice 10 squares on
12668			// the graph. Make sure we always have at least 2 ticks
12669			var maxTicks = me.getTickLimit();
12670			maxTicks = Math.max(2, maxTicks);
12671
12672			var numericGeneratorOptions = {
12673				maxTicks: maxTicks,
12674				min: tickOpts.min,
12675				max: tickOpts.max,
12676				stepSize: helpers.valueOrDefault(tickOpts.fixedStepSize, tickOpts.stepSize)
12677			};
12678			var ticks = me.ticks = generateTicks(numericGeneratorOptions, me);
12679
12680			me.handleDirectionalChanges();
12681
12682			// At this point, we need to update our max and min given the tick values since we have expanded the
12683			// range of the scale
12684			me.max = helpers.max(ticks);
12685			me.min = helpers.min(ticks);
12686
12687			if (tickOpts.reverse) {
12688				ticks.reverse();
12689
12690				me.start = me.max;
12691				me.end = me.min;
12692			} else {
12693				me.start = me.min;
12694				me.end = me.max;
12695			}
12696		},
12697		convertTicksToLabels: function() {
12698			var me = this;
12699			me.ticksAsNumbers = me.ticks.slice();
12700			me.zeroLineIndex = me.ticks.indexOf(0);
12701
12702			Chart.Scale.prototype.convertTicksToLabels.call(me);
12703		}
12704	});
12705};
12706
12707},{"45":45}],56:[function(require,module,exports){
12708'use strict';
12709
12710var helpers = require(45);
12711var Ticks = require(34);
12712
12713/**
12714 * Generate a set of logarithmic ticks
12715 * @param generationOptions the options used to generate the ticks
12716 * @param dataRange the range of the data
12717 * @returns {Array<Number>} array of tick values
12718 */
12719function generateTicks(generationOptions, dataRange) {
12720	var ticks = [];
12721	var valueOrDefault = helpers.valueOrDefault;
12722
12723	// Figure out what the max number of ticks we can support it is based on the size of
12724	// the axis area. For now, we say that the minimum tick spacing in pixels must be 50
12725	// We also limit the maximum number of ticks to 11 which gives a nice 10 squares on
12726	// the graph
12727	var tickVal = valueOrDefault(generationOptions.min, Math.pow(10, Math.floor(helpers.log10(dataRange.min))));
12728
12729	var endExp = Math.floor(helpers.log10(dataRange.max));
12730	var endSignificand = Math.ceil(dataRange.max / Math.pow(10, endExp));
12731	var exp, significand;
12732
12733	if (tickVal === 0) {
12734		exp = Math.floor(helpers.log10(dataRange.minNotZero));
12735		significand = Math.floor(dataRange.minNotZero / Math.pow(10, exp));
12736
12737		ticks.push(tickVal);
12738		tickVal = significand * Math.pow(10, exp);
12739	} else {
12740		exp = Math.floor(helpers.log10(tickVal));
12741		significand = Math.floor(tickVal / Math.pow(10, exp));
12742	}
12743	var precision = exp < 0 ? Math.pow(10, Math.abs(exp)) : 1;
12744
12745	do {
12746		ticks.push(tickVal);
12747
12748		++significand;
12749		if (significand === 10) {
12750			significand = 1;
12751			++exp;
12752			precision = exp >= 0 ? 1 : precision;
12753		}
12754
12755		tickVal = Math.round(significand * Math.pow(10, exp) * precision) / precision;
12756	} while (exp < endExp || (exp === endExp && significand < endSignificand));
12757
12758	var lastTick = valueOrDefault(generationOptions.max, tickVal);
12759	ticks.push(lastTick);
12760
12761	return ticks;
12762}
12763
12764
12765module.exports = function(Chart) {
12766
12767	var defaultConfig = {
12768		position: 'left',
12769
12770		// label settings
12771		ticks: {
12772			callback: Ticks.formatters.logarithmic
12773		}
12774	};
12775
12776	var LogarithmicScale = Chart.Scale.extend({
12777		determineDataLimits: function() {
12778			var me = this;
12779			var opts = me.options;
12780			var chart = me.chart;
12781			var data = chart.data;
12782			var datasets = data.datasets;
12783			var isHorizontal = me.isHorizontal();
12784			function IDMatches(meta) {
12785				return isHorizontal ? meta.xAxisID === me.id : meta.yAxisID === me.id;
12786			}
12787
12788			// Calculate Range
12789			me.min = null;
12790			me.max = null;
12791			me.minNotZero = null;
12792
12793			var hasStacks = opts.stacked;
12794			if (hasStacks === undefined) {
12795				helpers.each(datasets, function(dataset, datasetIndex) {
12796					if (hasStacks) {
12797						return;
12798					}
12799
12800					var meta = chart.getDatasetMeta(datasetIndex);
12801					if (chart.isDatasetVisible(datasetIndex) && IDMatches(meta) &&
12802						meta.stack !== undefined) {
12803						hasStacks = true;
12804					}
12805				});
12806			}
12807
12808			if (opts.stacked || hasStacks) {
12809				var valuesPerStack = {};
12810
12811				helpers.each(datasets, function(dataset, datasetIndex) {
12812					var meta = chart.getDatasetMeta(datasetIndex);
12813					var key = [
12814						meta.type,
12815						// we have a separate stack for stack=undefined datasets when the opts.stacked is undefined
12816						((opts.stacked === undefined && meta.stack === undefined) ? datasetIndex : ''),
12817						meta.stack
12818					].join('.');
12819
12820					if (chart.isDatasetVisible(datasetIndex) && IDMatches(meta)) {
12821						if (valuesPerStack[key] === undefined) {
12822							valuesPerStack[key] = [];
12823						}
12824
12825						helpers.each(dataset.data, function(rawValue, index) {
12826							var values = valuesPerStack[key];
12827							var value = +me.getRightValue(rawValue);
12828							// invalid, hidden and negative values are ignored
12829							if (isNaN(value) || meta.data[index].hidden || value < 0) {
12830								return;
12831							}
12832							values[index] = values[index] || 0;
12833							values[index] += value;
12834						});
12835					}
12836				});
12837
12838				helpers.each(valuesPerStack, function(valuesForType) {
12839					if (valuesForType.length > 0) {
12840						var minVal = helpers.min(valuesForType);
12841						var maxVal = helpers.max(valuesForType);
12842						me.min = me.min === null ? minVal : Math.min(me.min, minVal);
12843						me.max = me.max === null ? maxVal : Math.max(me.max, maxVal);
12844					}
12845				});
12846
12847			} else {
12848				helpers.each(datasets, function(dataset, datasetIndex) {
12849					var meta = chart.getDatasetMeta(datasetIndex);
12850					if (chart.isDatasetVisible(datasetIndex) && IDMatches(meta)) {
12851						helpers.each(dataset.data, function(rawValue, index) {
12852							var value = +me.getRightValue(rawValue);
12853							// invalid, hidden and negative values are ignored
12854							if (isNaN(value) || meta.data[index].hidden || value < 0) {
12855								return;
12856							}
12857
12858							if (me.min === null) {
12859								me.min = value;
12860							} else if (value < me.min) {
12861								me.min = value;
12862							}
12863
12864							if (me.max === null) {
12865								me.max = value;
12866							} else if (value > me.max) {
12867								me.max = value;
12868							}
12869
12870							if (value !== 0 && (me.minNotZero === null || value < me.minNotZero)) {
12871								me.minNotZero = value;
12872							}
12873						});
12874					}
12875				});
12876			}
12877
12878			// Common base implementation to handle ticks.min, ticks.max
12879			this.handleTickRangeOptions();
12880		},
12881		handleTickRangeOptions: function() {
12882			var me = this;
12883			var opts = me.options;
12884			var tickOpts = opts.ticks;
12885			var valueOrDefault = helpers.valueOrDefault;
12886			var DEFAULT_MIN = 1;
12887			var DEFAULT_MAX = 10;
12888
12889			me.min = valueOrDefault(tickOpts.min, me.min);
12890			me.max = valueOrDefault(tickOpts.max, me.max);
12891
12892			if (me.min === me.max) {
12893				if (me.min !== 0 && me.min !== null) {
12894					me.min = Math.pow(10, Math.floor(helpers.log10(me.min)) - 1);
12895					me.max = Math.pow(10, Math.floor(helpers.log10(me.max)) + 1);
12896				} else {
12897					me.min = DEFAULT_MIN;
12898					me.max = DEFAULT_MAX;
12899				}
12900			}
12901			if (me.min === null) {
12902				me.min = Math.pow(10, Math.floor(helpers.log10(me.max)) - 1);
12903			}
12904			if (me.max === null) {
12905				me.max = me.min !== 0
12906					? Math.pow(10, Math.floor(helpers.log10(me.min)) + 1)
12907					: DEFAULT_MAX;
12908			}
12909			if (me.minNotZero === null) {
12910				if (me.min > 0) {
12911					me.minNotZero = me.min;
12912				} else if (me.max < 1) {
12913					me.minNotZero = Math.pow(10, Math.floor(helpers.log10(me.max)));
12914				} else {
12915					me.minNotZero = DEFAULT_MIN;
12916				}
12917			}
12918		},
12919		buildTicks: function() {
12920			var me = this;
12921			var opts = me.options;
12922			var tickOpts = opts.ticks;
12923			var reverse = !me.isHorizontal();
12924
12925			var generationOptions = {
12926				min: tickOpts.min,
12927				max: tickOpts.max
12928			};
12929			var ticks = me.ticks = generateTicks(generationOptions, me);
12930
12931			// At this point, we need to update our max and min given the tick values since we have expanded the
12932			// range of the scale
12933			me.max = helpers.max(ticks);
12934			me.min = helpers.min(ticks);
12935
12936			if (tickOpts.reverse) {
12937				reverse = !reverse;
12938				me.start = me.max;
12939				me.end = me.min;
12940			} else {
12941				me.start = me.min;
12942				me.end = me.max;
12943			}
12944			if (reverse) {
12945				ticks.reverse();
12946			}
12947		},
12948		convertTicksToLabels: function() {
12949			this.tickValues = this.ticks.slice();
12950
12951			Chart.Scale.prototype.convertTicksToLabels.call(this);
12952		},
12953		// Get the correct tooltip label
12954		getLabelForIndex: function(index, datasetIndex) {
12955			return +this.getRightValue(this.chart.data.datasets[datasetIndex].data[index]);
12956		},
12957		getPixelForTick: function(index) {
12958			return this.getPixelForValue(this.tickValues[index]);
12959		},
12960		/**
12961		 * Returns the value of the first tick.
12962		 * @param {Number} value - The minimum not zero value.
12963		 * @return {Number} The first tick value.
12964		 * @private
12965		 */
12966		_getFirstTickValue: function(value) {
12967			var exp = Math.floor(helpers.log10(value));
12968			var significand = Math.floor(value / Math.pow(10, exp));
12969
12970			return significand * Math.pow(10, exp);
12971		},
12972		getPixelForValue: function(value) {
12973			var me = this;
12974			var reverse = me.options.ticks.reverse;
12975			var log10 = helpers.log10;
12976			var firstTickValue = me._getFirstTickValue(me.minNotZero);
12977			var offset = 0;
12978			var innerDimension, pixel, start, end, sign;
12979
12980			value = +me.getRightValue(value);
12981			if (reverse) {
12982				start = me.end;
12983				end = me.start;
12984				sign = -1;
12985			} else {
12986				start = me.start;
12987				end = me.end;
12988				sign = 1;
12989			}
12990			if (me.isHorizontal()) {
12991				innerDimension = me.width;
12992				pixel = reverse ? me.right : me.left;
12993			} else {
12994				innerDimension = me.height;
12995				sign *= -1; // invert, since the upper-left corner of the canvas is at pixel (0, 0)
12996				pixel = reverse ? me.top : me.bottom;
12997			}
12998			if (value !== start) {
12999				if (start === 0) { // include zero tick
13000					offset = helpers.getValueOrDefault(
13001						me.options.ticks.fontSize,
13002						Chart.defaults.global.defaultFontSize
13003					);
13004					innerDimension -= offset;
13005					start = firstTickValue;
13006				}
13007				if (value !== 0) {
13008					offset += innerDimension / (log10(end) - log10(start)) * (log10(value) - log10(start));
13009				}
13010				pixel += sign * offset;
13011			}
13012			return pixel;
13013		},
13014		getValueForPixel: function(pixel) {
13015			var me = this;
13016			var reverse = me.options.ticks.reverse;
13017			var log10 = helpers.log10;
13018			var firstTickValue = me._getFirstTickValue(me.minNotZero);
13019			var innerDimension, start, end, value;
13020
13021			if (reverse) {
13022				start = me.end;
13023				end = me.start;
13024			} else {
13025				start = me.start;
13026				end = me.end;
13027			}
13028			if (me.isHorizontal()) {
13029				innerDimension = me.width;
13030				value = reverse ? me.right - pixel : pixel - me.left;
13031			} else {
13032				innerDimension = me.height;
13033				value = reverse ? pixel - me.top : me.bottom - pixel;
13034			}
13035			if (value !== start) {
13036				if (start === 0) { // include zero tick
13037					var offset = helpers.getValueOrDefault(
13038						me.options.ticks.fontSize,
13039						Chart.defaults.global.defaultFontSize
13040					);
13041					value -= offset;
13042					innerDimension -= offset;
13043					start = firstTickValue;
13044				}
13045				value *= log10(end) - log10(start);
13046				value /= innerDimension;
13047				value = Math.pow(10, log10(start) + value);
13048			}
13049			return value;
13050		}
13051	});
13052	Chart.scaleService.registerScaleType('logarithmic', LogarithmicScale, defaultConfig);
13053
13054};
13055
13056},{"34":34,"45":45}],57:[function(require,module,exports){
13057'use strict';
13058
13059var defaults = require(25);
13060var helpers = require(45);
13061var Ticks = require(34);
13062
13063module.exports = function(Chart) {
13064
13065	var globalDefaults = defaults.global;
13066
13067	var defaultConfig = {
13068		display: true,
13069
13070		// Boolean - Whether to animate scaling the chart from the centre
13071		animate: true,
13072		position: 'chartArea',
13073
13074		angleLines: {
13075			display: true,
13076			color: 'rgba(0, 0, 0, 0.1)',
13077			lineWidth: 1
13078		},
13079
13080		gridLines: {
13081			circular: false
13082		},
13083
13084		// label settings
13085		ticks: {
13086			// Boolean - Show a backdrop to the scale label
13087			showLabelBackdrop: true,
13088
13089			// String - The colour of the label backdrop
13090			backdropColor: 'rgba(255,255,255,0.75)',
13091
13092			// Number - The backdrop padding above & below the label in pixels
13093			backdropPaddingY: 2,
13094
13095			// Number - The backdrop padding to the side of the label in pixels
13096			backdropPaddingX: 2,
13097
13098			callback: Ticks.formatters.linear
13099		},
13100
13101		pointLabels: {
13102			// Boolean - if true, show point labels
13103			display: true,
13104
13105			// Number - Point label font size in pixels
13106			fontSize: 10,
13107
13108			// Function - Used to convert point labels
13109			callback: function(label) {
13110				return label;
13111			}
13112		}
13113	};
13114
13115	function getValueCount(scale) {
13116		var opts = scale.options;
13117		return opts.angleLines.display || opts.pointLabels.display ? scale.chart.data.labels.length : 0;
13118	}
13119
13120	function getPointLabelFontOptions(scale) {
13121		var pointLabelOptions = scale.options.pointLabels;
13122		var fontSize = helpers.valueOrDefault(pointLabelOptions.fontSize, globalDefaults.defaultFontSize);
13123		var fontStyle = helpers.valueOrDefault(pointLabelOptions.fontStyle, globalDefaults.defaultFontStyle);
13124		var fontFamily = helpers.valueOrDefault(pointLabelOptions.fontFamily, globalDefaults.defaultFontFamily);
13125		var font = helpers.fontString(fontSize, fontStyle, fontFamily);
13126
13127		return {
13128			size: fontSize,
13129			style: fontStyle,
13130			family: fontFamily,
13131			font: font
13132		};
13133	}
13134
13135	function measureLabelSize(ctx, fontSize, label) {
13136		if (helpers.isArray(label)) {
13137			return {
13138				w: helpers.longestText(ctx, ctx.font, label),
13139				h: (label.length * fontSize) + ((label.length - 1) * 1.5 * fontSize)
13140			};
13141		}
13142
13143		return {
13144			w: ctx.measureText(label).width,
13145			h: fontSize
13146		};
13147	}
13148
13149	function determineLimits(angle, pos, size, min, max) {
13150		if (angle === min || angle === max) {
13151			return {
13152				start: pos - (size / 2),
13153				end: pos + (size / 2)
13154			};
13155		} else if (angle < min || angle > max) {
13156			return {
13157				start: pos - size - 5,
13158				end: pos
13159			};
13160		}
13161
13162		return {
13163			start: pos,
13164			end: pos + size + 5
13165		};
13166	}
13167
13168	/**
13169	 * Helper function to fit a radial linear scale with point labels
13170	 */
13171	function fitWithPointLabels(scale) {
13172		/*
13173		 * Right, this is really confusing and there is a lot of maths going on here
13174		 * The gist of the problem is here: https://gist.github.com/nnnick/696cc9c55f4b0beb8fe9
13175		 *
13176		 * Reaction: https://dl.dropboxusercontent.com/u/34601363/toomuchscience.gif
13177		 *
13178		 * Solution:
13179		 *
13180		 * We assume the radius of the polygon is half the size of the canvas at first
13181		 * at each index we check if the text overlaps.
13182		 *
13183		 * Where it does, we store that angle and that index.
13184		 *
13185		 * After finding the largest index and angle we calculate how much we need to remove
13186		 * from the shape radius to move the point inwards by that x.
13187		 *
13188		 * We average the left and right distances to get the maximum shape radius that can fit in the box
13189		 * along with labels.
13190		 *
13191		 * Once we have that, we can find the centre point for the chart, by taking the x text protrusion
13192		 * on each side, removing that from the size, halving it and adding the left x protrusion width.
13193		 *
13194		 * This will mean we have a shape fitted to the canvas, as large as it can be with the labels
13195		 * and position it in the most space efficient manner
13196		 *
13197		 * https://dl.dropboxusercontent.com/u/34601363/yeahscience.gif
13198		 */
13199
13200		var plFont = getPointLabelFontOptions(scale);
13201
13202		// Get maximum radius of the polygon. Either half the height (minus the text width) or half the width.
13203		// Use this to calculate the offset + change. - Make sure L/R protrusion is at least 0 to stop issues with centre points
13204		var largestPossibleRadius = Math.min(scale.height / 2, scale.width / 2);
13205		var furthestLimits = {
13206			r: scale.width,
13207			l: 0,
13208			t: scale.height,
13209			b: 0
13210		};
13211		var furthestAngles = {};
13212		var i, textSize, pointPosition;
13213
13214		scale.ctx.font = plFont.font;
13215		scale._pointLabelSizes = [];
13216
13217		var valueCount = getValueCount(scale);
13218		for (i = 0; i < valueCount; i++) {
13219			pointPosition = scale.getPointPosition(i, largestPossibleRadius);
13220			textSize = measureLabelSize(scale.ctx, plFont.size, scale.pointLabels[i] || '');
13221			scale._pointLabelSizes[i] = textSize;
13222
13223			// Add quarter circle to make degree 0 mean top of circle
13224			var angleRadians = scale.getIndexAngle(i);
13225			var angle = helpers.toDegrees(angleRadians) % 360;
13226			var hLimits = determineLimits(angle, pointPosition.x, textSize.w, 0, 180);
13227			var vLimits = determineLimits(angle, pointPosition.y, textSize.h, 90, 270);
13228
13229			if (hLimits.start < furthestLimits.l) {
13230				furthestLimits.l = hLimits.start;
13231				furthestAngles.l = angleRadians;
13232			}
13233
13234			if (hLimits.end > furthestLimits.r) {
13235				furthestLimits.r = hLimits.end;
13236				furthestAngles.r = angleRadians;
13237			}
13238
13239			if (vLimits.start < furthestLimits.t) {
13240				furthestLimits.t = vLimits.start;
13241				furthestAngles.t = angleRadians;
13242			}
13243
13244			if (vLimits.end > furthestLimits.b) {
13245				furthestLimits.b = vLimits.end;
13246				furthestAngles.b = angleRadians;
13247			}
13248		}
13249
13250		scale.setReductions(largestPossibleRadius, furthestLimits, furthestAngles);
13251	}
13252
13253	/**
13254	 * Helper function to fit a radial linear scale with no point labels
13255	 */
13256	function fit(scale) {
13257		var largestPossibleRadius = Math.min(scale.height / 2, scale.width / 2);
13258		scale.drawingArea = Math.round(largestPossibleRadius);
13259		scale.setCenterPoint(0, 0, 0, 0);
13260	}
13261
13262	function getTextAlignForAngle(angle) {
13263		if (angle === 0 || angle === 180) {
13264			return 'center';
13265		} else if (angle < 180) {
13266			return 'left';
13267		}
13268
13269		return 'right';
13270	}
13271
13272	function fillText(ctx, text, position, fontSize) {
13273		if (helpers.isArray(text)) {
13274			var y = position.y;
13275			var spacing = 1.5 * fontSize;
13276
13277			for (var i = 0; i < text.length; ++i) {
13278				ctx.fillText(text[i], position.x, y);
13279				y += spacing;
13280			}
13281		} else {
13282			ctx.fillText(text, position.x, position.y);
13283		}
13284	}
13285
13286	function adjustPointPositionForLabelHeight(angle, textSize, position) {
13287		if (angle === 90 || angle === 270) {
13288			position.y -= (textSize.h / 2);
13289		} else if (angle > 270 || angle < 90) {
13290			position.y -= textSize.h;
13291		}
13292	}
13293
13294	function drawPointLabels(scale) {
13295		var ctx = scale.ctx;
13296		var valueOrDefault = helpers.valueOrDefault;
13297		var opts = scale.options;
13298		var angleLineOpts = opts.angleLines;
13299		var pointLabelOpts = opts.pointLabels;
13300
13301		ctx.lineWidth = angleLineOpts.lineWidth;
13302		ctx.strokeStyle = angleLineOpts.color;
13303
13304		var outerDistance = scale.getDistanceFromCenterForValue(opts.ticks.reverse ? scale.min : scale.max);
13305
13306		// Point Label Font
13307		var plFont = getPointLabelFontOptions(scale);
13308
13309		ctx.textBaseline = 'top';
13310
13311		for (var i = getValueCount(scale) - 1; i >= 0; i--) {
13312			if (angleLineOpts.display) {
13313				var outerPosition = scale.getPointPosition(i, outerDistance);
13314				ctx.beginPath();
13315				ctx.moveTo(scale.xCenter, scale.yCenter);
13316				ctx.lineTo(outerPosition.x, outerPosition.y);
13317				ctx.stroke();
13318				ctx.closePath();
13319			}
13320
13321			if (pointLabelOpts.display) {
13322				// Extra 3px out for some label spacing
13323				var pointLabelPosition = scale.getPointPosition(i, outerDistance + 5);
13324
13325				// Keep this in loop since we may support array properties here
13326				var pointLabelFontColor = valueOrDefault(pointLabelOpts.fontColor, globalDefaults.defaultFontColor);
13327				ctx.font = plFont.font;
13328				ctx.fillStyle = pointLabelFontColor;
13329
13330				var angleRadians = scale.getIndexAngle(i);
13331				var angle = helpers.toDegrees(angleRadians);
13332				ctx.textAlign = getTextAlignForAngle(angle);
13333				adjustPointPositionForLabelHeight(angle, scale._pointLabelSizes[i], pointLabelPosition);
13334				fillText(ctx, scale.pointLabels[i] || '', pointLabelPosition, plFont.size);
13335			}
13336		}
13337	}
13338
13339	function drawRadiusLine(scale, gridLineOpts, radius, index) {
13340		var ctx = scale.ctx;
13341		ctx.strokeStyle = helpers.valueAtIndexOrDefault(gridLineOpts.color, index - 1);
13342		ctx.lineWidth = helpers.valueAtIndexOrDefault(gridLineOpts.lineWidth, index - 1);
13343
13344		if (scale.options.gridLines.circular) {
13345			// Draw circular arcs between the points
13346			ctx.beginPath();
13347			ctx.arc(scale.xCenter, scale.yCenter, radius, 0, Math.PI * 2);
13348			ctx.closePath();
13349			ctx.stroke();
13350		} else {
13351			// Draw straight lines connecting each index
13352			var valueCount = getValueCount(scale);
13353
13354			if (valueCount === 0) {
13355				return;
13356			}
13357
13358			ctx.beginPath();
13359			var pointPosition = scale.getPointPosition(0, radius);
13360			ctx.moveTo(pointPosition.x, pointPosition.y);
13361
13362			for (var i = 1; i < valueCount; i++) {
13363				pointPosition = scale.getPointPosition(i, radius);
13364				ctx.lineTo(pointPosition.x, pointPosition.y);
13365			}
13366
13367			ctx.closePath();
13368			ctx.stroke();
13369		}
13370	}
13371
13372	function numberOrZero(param) {
13373		return helpers.isNumber(param) ? param : 0;
13374	}
13375
13376	var LinearRadialScale = Chart.LinearScaleBase.extend({
13377		setDimensions: function() {
13378			var me = this;
13379			var opts = me.options;
13380			var tickOpts = opts.ticks;
13381			// Set the unconstrained dimension before label rotation
13382			me.width = me.maxWidth;
13383			me.height = me.maxHeight;
13384			me.xCenter = Math.round(me.width / 2);
13385			me.yCenter = Math.round(me.height / 2);
13386
13387			var minSize = helpers.min([me.height, me.width]);
13388			var tickFontSize = helpers.valueOrDefault(tickOpts.fontSize, globalDefaults.defaultFontSize);
13389			me.drawingArea = opts.display ? (minSize / 2) - (tickFontSize / 2 + tickOpts.backdropPaddingY) : (minSize / 2);
13390		},
13391		determineDataLimits: function() {
13392			var me = this;
13393			var chart = me.chart;
13394			var min = Number.POSITIVE_INFINITY;
13395			var max = Number.NEGATIVE_INFINITY;
13396
13397			helpers.each(chart.data.datasets, function(dataset, datasetIndex) {
13398				if (chart.isDatasetVisible(datasetIndex)) {
13399					var meta = chart.getDatasetMeta(datasetIndex);
13400
13401					helpers.each(dataset.data, function(rawValue, index) {
13402						var value = +me.getRightValue(rawValue);
13403						if (isNaN(value) || meta.data[index].hidden) {
13404							return;
13405						}
13406
13407						min = Math.min(value, min);
13408						max = Math.max(value, max);
13409					});
13410				}
13411			});
13412
13413			me.min = (min === Number.POSITIVE_INFINITY ? 0 : min);
13414			me.max = (max === Number.NEGATIVE_INFINITY ? 0 : max);
13415
13416			// Common base implementation to handle ticks.min, ticks.max, ticks.beginAtZero
13417			me.handleTickRangeOptions();
13418		},
13419		getTickLimit: function() {
13420			var tickOpts = this.options.ticks;
13421			var tickFontSize = helpers.valueOrDefault(tickOpts.fontSize, globalDefaults.defaultFontSize);
13422			return Math.min(tickOpts.maxTicksLimit ? tickOpts.maxTicksLimit : 11, Math.ceil(this.drawingArea / (1.5 * tickFontSize)));
13423		},
13424		convertTicksToLabels: function() {
13425			var me = this;
13426
13427			Chart.LinearScaleBase.prototype.convertTicksToLabels.call(me);
13428
13429			// Point labels
13430			me.pointLabels = me.chart.data.labels.map(me.options.pointLabels.callback, me);
13431		},
13432		getLabelForIndex: function(index, datasetIndex) {
13433			return +this.getRightValue(this.chart.data.datasets[datasetIndex].data[index]);
13434		},
13435		fit: function() {
13436			if (this.options.pointLabels.display) {
13437				fitWithPointLabels(this);
13438			} else {
13439				fit(this);
13440			}
13441		},
13442		/**
13443		 * Set radius reductions and determine new radius and center point
13444		 * @private
13445		 */
13446		setReductions: function(largestPossibleRadius, furthestLimits, furthestAngles) {
13447			var me = this;
13448			var radiusReductionLeft = furthestLimits.l / Math.sin(furthestAngles.l);
13449			var radiusReductionRight = Math.max(furthestLimits.r - me.width, 0) / Math.sin(furthestAngles.r);
13450			var radiusReductionTop = -furthestLimits.t / Math.cos(furthestAngles.t);
13451			var radiusReductionBottom = -Math.max(furthestLimits.b - me.height, 0) / Math.cos(furthestAngles.b);
13452
13453			radiusReductionLeft = numberOrZero(radiusReductionLeft);
13454			radiusReductionRight = numberOrZero(radiusReductionRight);
13455			radiusReductionTop = numberOrZero(radiusReductionTop);
13456			radiusReductionBottom = numberOrZero(radiusReductionBottom);
13457
13458			me.drawingArea = Math.min(
13459				Math.round(largestPossibleRadius - (radiusReductionLeft + radiusReductionRight) / 2),
13460				Math.round(largestPossibleRadius - (radiusReductionTop + radiusReductionBottom) / 2));
13461			me.setCenterPoint(radiusReductionLeft, radiusReductionRight, radiusReductionTop, radiusReductionBottom);
13462		},
13463		setCenterPoint: function(leftMovement, rightMovement, topMovement, bottomMovement) {
13464			var me = this;
13465			var maxRight = me.width - rightMovement - me.drawingArea;
13466			var maxLeft = leftMovement + me.drawingArea;
13467			var maxTop = topMovement + me.drawingArea;
13468			var maxBottom = me.height - bottomMovement - me.drawingArea;
13469
13470			me.xCenter = Math.round(((maxLeft + maxRight) / 2) + me.left);
13471			me.yCenter = Math.round(((maxTop + maxBottom) / 2) + me.top);
13472		},
13473
13474		getIndexAngle: function(index) {
13475			var angleMultiplier = (Math.PI * 2) / getValueCount(this);
13476			var startAngle = this.chart.options && this.chart.options.startAngle ?
13477				this.chart.options.startAngle :
13478				0;
13479
13480			var startAngleRadians = startAngle * Math.PI * 2 / 360;
13481
13482			// Start from the top instead of right, so remove a quarter of the circle
13483			return index * angleMultiplier + startAngleRadians;
13484		},
13485		getDistanceFromCenterForValue: function(value) {
13486			var me = this;
13487
13488			if (value === null) {
13489				return 0; // null always in center
13490			}
13491
13492			// Take into account half font size + the yPadding of the top value
13493			var scalingFactor = me.drawingArea / (me.max - me.min);
13494			if (me.options.ticks.reverse) {
13495				return (me.max - value) * scalingFactor;
13496			}
13497			return (value - me.min) * scalingFactor;
13498		},
13499		getPointPosition: function(index, distanceFromCenter) {
13500			var me = this;
13501			var thisAngle = me.getIndexAngle(index) - (Math.PI / 2);
13502			return {
13503				x: Math.round(Math.cos(thisAngle) * distanceFromCenter) + me.xCenter,
13504				y: Math.round(Math.sin(thisAngle) * distanceFromCenter) + me.yCenter
13505			};
13506		},
13507		getPointPositionForValue: function(index, value) {
13508			return this.getPointPosition(index, this.getDistanceFromCenterForValue(value));
13509		},
13510
13511		getBasePosition: function() {
13512			var me = this;
13513			var min = me.min;
13514			var max = me.max;
13515
13516			return me.getPointPositionForValue(0,
13517				me.beginAtZero ? 0 :
13518				min < 0 && max < 0 ? max :
13519				min > 0 && max > 0 ? min :
13520				0);
13521		},
13522
13523		draw: function() {
13524			var me = this;
13525			var opts = me.options;
13526			var gridLineOpts = opts.gridLines;
13527			var tickOpts = opts.ticks;
13528			var valueOrDefault = helpers.valueOrDefault;
13529
13530			if (opts.display) {
13531				var ctx = me.ctx;
13532				var startAngle = this.getIndexAngle(0);
13533
13534				// Tick Font
13535				var tickFontSize = valueOrDefault(tickOpts.fontSize, globalDefaults.defaultFontSize);
13536				var tickFontStyle = valueOrDefault(tickOpts.fontStyle, globalDefaults.defaultFontStyle);
13537				var tickFontFamily = valueOrDefault(tickOpts.fontFamily, globalDefaults.defaultFontFamily);
13538				var tickLabelFont = helpers.fontString(tickFontSize, tickFontStyle, tickFontFamily);
13539
13540				helpers.each(me.ticks, function(label, index) {
13541					// Don't draw a centre value (if it is minimum)
13542					if (index > 0 || tickOpts.reverse) {
13543						var yCenterOffset = me.getDistanceFromCenterForValue(me.ticksAsNumbers[index]);
13544
13545						// Draw circular lines around the scale
13546						if (gridLineOpts.display && index !== 0) {
13547							drawRadiusLine(me, gridLineOpts, yCenterOffset, index);
13548						}
13549
13550						if (tickOpts.display) {
13551							var tickFontColor = valueOrDefault(tickOpts.fontColor, globalDefaults.defaultFontColor);
13552							ctx.font = tickLabelFont;
13553
13554							ctx.save();
13555							ctx.translate(me.xCenter, me.yCenter);
13556							ctx.rotate(startAngle);
13557
13558							if (tickOpts.showLabelBackdrop) {
13559								var labelWidth = ctx.measureText(label).width;
13560								ctx.fillStyle = tickOpts.backdropColor;
13561								ctx.fillRect(
13562									-labelWidth / 2 - tickOpts.backdropPaddingX,
13563									-yCenterOffset - tickFontSize / 2 - tickOpts.backdropPaddingY,
13564									labelWidth + tickOpts.backdropPaddingX * 2,
13565									tickFontSize + tickOpts.backdropPaddingY * 2
13566								);
13567							}
13568
13569							ctx.textAlign = 'center';
13570							ctx.textBaseline = 'middle';
13571							ctx.fillStyle = tickFontColor;
13572							ctx.fillText(label, 0, -yCenterOffset);
13573							ctx.restore();
13574						}
13575					}
13576				});
13577
13578				if (opts.angleLines.display || opts.pointLabels.display) {
13579					drawPointLabels(me);
13580				}
13581			}
13582		}
13583	});
13584	Chart.scaleService.registerScaleType('radialLinear', LinearRadialScale, defaultConfig);
13585
13586};
13587
13588},{"25":25,"34":34,"45":45}],58:[function(require,module,exports){
13589/* global window: false */
13590'use strict';
13591
13592var moment = require(1);
13593moment = typeof moment === 'function' ? moment : window.moment;
13594
13595var defaults = require(25);
13596var helpers = require(45);
13597
13598// Integer constants are from the ES6 spec.
13599var MIN_INTEGER = Number.MIN_SAFE_INTEGER || -9007199254740991;
13600var MAX_INTEGER = Number.MAX_SAFE_INTEGER || 9007199254740991;
13601
13602var INTERVALS = {
13603	millisecond: {
13604		common: true,
13605		size: 1,
13606		steps: [1, 2, 5, 10, 20, 50, 100, 250, 500]
13607	},
13608	second: {
13609		common: true,
13610		size: 1000,
13611		steps: [1, 2, 5, 10, 30]
13612	},
13613	minute: {
13614		common: true,
13615		size: 60000,
13616		steps: [1, 2, 5, 10, 30]
13617	},
13618	hour: {
13619		common: true,
13620		size: 3600000,
13621		steps: [1, 2, 3, 6, 12]
13622	},
13623	day: {
13624		common: true,
13625		size: 86400000,
13626		steps: [1, 2, 5]
13627	},
13628	week: {
13629		common: false,
13630		size: 604800000,
13631		steps: [1, 2, 3, 4]
13632	},
13633	month: {
13634		common: true,
13635		size: 2.628e9,
13636		steps: [1, 2, 3]
13637	},
13638	quarter: {
13639		common: false,
13640		size: 7.884e9,
13641		steps: [1, 2, 3, 4]
13642	},
13643	year: {
13644		common: true,
13645		size: 3.154e10
13646	}
13647};
13648
13649var UNITS = Object.keys(INTERVALS);
13650
13651function sorter(a, b) {
13652	return a - b;
13653}
13654
13655function arrayUnique(items) {
13656	var hash = {};
13657	var out = [];
13658	var i, ilen, item;
13659
13660	for (i = 0, ilen = items.length; i < ilen; ++i) {
13661		item = items[i];
13662		if (!hash[item]) {
13663			hash[item] = true;
13664			out.push(item);
13665		}
13666	}
13667
13668	return out;
13669}
13670
13671/**
13672 * Returns an array of {time, pos} objects used to interpolate a specific `time` or position
13673 * (`pos`) on the scale, by searching entries before and after the requested value. `pos` is
13674 * a decimal between 0 and 1: 0 being the start of the scale (left or top) and 1 the other
13675 * extremity (left + width or top + height). Note that it would be more optimized to directly
13676 * store pre-computed pixels, but the scale dimensions are not guaranteed at the time we need
13677 * to create the lookup table. The table ALWAYS contains at least two items: min and max.
13678 *
13679 * @param {Number[]} timestamps - timestamps sorted from lowest to highest.
13680 * @param {String} distribution - If 'linear', timestamps will be spread linearly along the min
13681 * and max range, so basically, the table will contains only two items: {min, 0} and {max, 1}.
13682 * If 'series', timestamps will be positioned at the same distance from each other. In this
13683 * case, only timestamps that break the time linearity are registered, meaning that in the
13684 * best case, all timestamps are linear, the table contains only min and max.
13685 */
13686function buildLookupTable(timestamps, min, max, distribution) {
13687	if (distribution === 'linear' || !timestamps.length) {
13688		return [
13689			{time: min, pos: 0},
13690			{time: max, pos: 1}
13691		];
13692	}
13693
13694	var table = [];
13695	var items = [min];
13696	var i, ilen, prev, curr, next;
13697
13698	for (i = 0, ilen = timestamps.length; i < ilen; ++i) {
13699		curr = timestamps[i];
13700		if (curr > min && curr < max) {
13701			items.push(curr);
13702		}
13703	}
13704
13705	items.push(max);
13706
13707	for (i = 0, ilen = items.length; i < ilen; ++i) {
13708		next = items[i + 1];
13709		prev = items[i - 1];
13710		curr = items[i];
13711
13712		// only add points that breaks the scale linearity
13713		if (prev === undefined || next === undefined || Math.round((next + prev) / 2) !== curr) {
13714			table.push({time: curr, pos: i / (ilen - 1)});
13715		}
13716	}
13717
13718	return table;
13719}
13720
13721// @see adapted from http://www.anujgakhar.com/2014/03/01/binary-search-in-javascript/
13722function lookup(table, key, value) {
13723	var lo = 0;
13724	var hi = table.length - 1;
13725	var mid, i0, i1;
13726
13727	while (lo >= 0 && lo <= hi) {
13728		mid = (lo + hi) >> 1;
13729		i0 = table[mid - 1] || null;
13730		i1 = table[mid];
13731
13732		if (!i0) {
13733			// given value is outside table (before first item)
13734			return {lo: null, hi: i1};
13735		} else if (i1[key] < value) {
13736			lo = mid + 1;
13737		} else if (i0[key] > value) {
13738			hi = mid - 1;
13739		} else {
13740			return {lo: i0, hi: i1};
13741		}
13742	}
13743
13744	// given value is outside table (after last item)
13745	return {lo: i1, hi: null};
13746}
13747
13748/**
13749 * Linearly interpolates the given source `value` using the table items `skey` values and
13750 * returns the associated `tkey` value. For example, interpolate(table, 'time', 42, 'pos')
13751 * returns the position for a timestamp equal to 42. If value is out of bounds, values at
13752 * index [0, 1] or [n - 1, n] are used for the interpolation.
13753 */
13754function interpolate(table, skey, sval, tkey) {
13755	var range = lookup(table, skey, sval);
13756
13757	// Note: the lookup table ALWAYS contains at least 2 items (min and max)
13758	var prev = !range.lo ? table[0] : !range.hi ? table[table.length - 2] : range.lo;
13759	var next = !range.lo ? table[1] : !range.hi ? table[table.length - 1] : range.hi;
13760
13761	var span = next[skey] - prev[skey];
13762	var ratio = span ? (sval - prev[skey]) / span : 0;
13763	var offset = (next[tkey] - prev[tkey]) * ratio;
13764
13765	return prev[tkey] + offset;
13766}
13767
13768/**
13769 * Convert the given value to a moment object using the given time options.
13770 * @see http://momentjs.com/docs/#/parsing/
13771 */
13772function momentify(value, options) {
13773	var parser = options.parser;
13774	var format = options.parser || options.format;
13775
13776	if (typeof parser === 'function') {
13777		return parser(value);
13778	}
13779
13780	if (typeof value === 'string' && typeof format === 'string') {
13781		return moment(value, format);
13782	}
13783
13784	if (!(value instanceof moment)) {
13785		value = moment(value);
13786	}
13787
13788	if (value.isValid()) {
13789		return value;
13790	}
13791
13792	// Labels are in an incompatible moment format and no `parser` has been provided.
13793	// The user might still use the deprecated `format` option to convert his inputs.
13794	if (typeof format === 'function') {
13795		return format(value);
13796	}
13797
13798	return value;
13799}
13800
13801function parse(input, scale) {
13802	if (helpers.isNullOrUndef(input)) {
13803		return null;
13804	}
13805
13806	var options = scale.options.time;
13807	var value = momentify(scale.getRightValue(input), options);
13808	if (!value.isValid()) {
13809		return null;
13810	}
13811
13812	if (options.round) {
13813		value.startOf(options.round);
13814	}
13815
13816	return value.valueOf();
13817}
13818
13819/**
13820 * Returns the number of unit to skip to be able to display up to `capacity` number of ticks
13821 * in `unit` for the given `min` / `max` range and respecting the interval steps constraints.
13822 */
13823function determineStepSize(min, max, unit, capacity) {
13824	var range = max - min;
13825	var interval = INTERVALS[unit];
13826	var milliseconds = interval.size;
13827	var steps = interval.steps;
13828	var i, ilen, factor;
13829
13830	if (!steps) {
13831		return Math.ceil(range / (capacity * milliseconds));
13832	}
13833
13834	for (i = 0, ilen = steps.length; i < ilen; ++i) {
13835		factor = steps[i];
13836		if (Math.ceil(range / (milliseconds * factor)) <= capacity) {
13837			break;
13838		}
13839	}
13840
13841	return factor;
13842}
13843
13844/**
13845 * Figures out what unit results in an appropriate number of auto-generated ticks
13846 */
13847function determineUnitForAutoTicks(minUnit, min, max, capacity) {
13848	var ilen = UNITS.length;
13849	var i, interval, factor;
13850
13851	for (i = UNITS.indexOf(minUnit); i < ilen - 1; ++i) {
13852		interval = INTERVALS[UNITS[i]];
13853		factor = interval.steps ? interval.steps[interval.steps.length - 1] : MAX_INTEGER;
13854
13855		if (interval.common && Math.ceil((max - min) / (factor * interval.size)) <= capacity) {
13856			return UNITS[i];
13857		}
13858	}
13859
13860	return UNITS[ilen - 1];
13861}
13862
13863/**
13864 * Figures out what unit to format a set of ticks with
13865 */
13866function determineUnitForFormatting(ticks, minUnit, min, max) {
13867	var duration = moment.duration(moment(max).diff(moment(min)));
13868	var ilen = UNITS.length;
13869	var i, unit;
13870
13871	for (i = ilen - 1; i >= UNITS.indexOf(minUnit); i--) {
13872		unit = UNITS[i];
13873		if (INTERVALS[unit].common && duration.as(unit) >= ticks.length) {
13874			return unit;
13875		}
13876	}
13877
13878	return UNITS[minUnit ? UNITS.indexOf(minUnit) : 0];
13879}
13880
13881function determineMajorUnit(unit) {
13882	for (var i = UNITS.indexOf(unit) + 1, ilen = UNITS.length; i < ilen; ++i) {
13883		if (INTERVALS[UNITS[i]].common) {
13884			return UNITS[i];
13885		}
13886	}
13887}
13888
13889/**
13890 * Generates a maximum of `capacity` timestamps between min and max, rounded to the
13891 * `minor` unit, aligned on the `major` unit and using the given scale time `options`.
13892 * Important: this method can return ticks outside the min and max range, it's the
13893 * responsibility of the calling code to clamp values if needed.
13894 */
13895function generate(min, max, capacity, options) {
13896	var timeOpts = options.time;
13897	var minor = timeOpts.unit || determineUnitForAutoTicks(timeOpts.minUnit, min, max, capacity);
13898	var major = determineMajorUnit(minor);
13899	var stepSize = helpers.valueOrDefault(timeOpts.stepSize, timeOpts.unitStepSize);
13900	var weekday = minor === 'week' ? timeOpts.isoWeekday : false;
13901	var majorTicksEnabled = options.ticks.major.enabled;
13902	var interval = INTERVALS[minor];
13903	var first = moment(min);
13904	var last = moment(max);
13905	var ticks = [];
13906	var time;
13907
13908	if (!stepSize) {
13909		stepSize = determineStepSize(min, max, minor, capacity);
13910	}
13911
13912	// For 'week' unit, handle the first day of week option
13913	if (weekday) {
13914		first = first.isoWeekday(weekday);
13915		last = last.isoWeekday(weekday);
13916	}
13917
13918	// Align first/last ticks on unit
13919	first = first.startOf(weekday ? 'day' : minor);
13920	last = last.startOf(weekday ? 'day' : minor);
13921
13922	// Make sure that the last tick include max
13923	if (last < max) {
13924		last.add(1, minor);
13925	}
13926
13927	time = moment(first);
13928
13929	if (majorTicksEnabled && major && !weekday && !timeOpts.round) {
13930		// Align the first tick on the previous `minor` unit aligned on the `major` unit:
13931		// we first aligned time on the previous `major` unit then add the number of full
13932		// stepSize there is between first and the previous major time.
13933		time.startOf(major);
13934		time.add(~~((first - time) / (interval.size * stepSize)) * stepSize, minor);
13935	}
13936
13937	for (; time < last; time.add(stepSize, minor)) {
13938		ticks.push(+time);
13939	}
13940
13941	ticks.push(+time);
13942
13943	return ticks;
13944}
13945
13946/**
13947 * Returns the right and left offsets from edges in the form of {left, right}.
13948 * Offsets are added when the `offset` option is true.
13949 */
13950function computeOffsets(table, ticks, min, max, options) {
13951	var left = 0;
13952	var right = 0;
13953	var upper, lower;
13954
13955	if (options.offset && ticks.length) {
13956		if (!options.time.min) {
13957			upper = ticks.length > 1 ? ticks[1] : max;
13958			lower = ticks[0];
13959			left = (
13960				interpolate(table, 'time', upper, 'pos') -
13961				interpolate(table, 'time', lower, 'pos')
13962			) / 2;
13963		}
13964		if (!options.time.max) {
13965			upper = ticks[ticks.length - 1];
13966			lower = ticks.length > 1 ? ticks[ticks.length - 2] : min;
13967			right = (
13968				interpolate(table, 'time', upper, 'pos') -
13969				interpolate(table, 'time', lower, 'pos')
13970			) / 2;
13971		}
13972	}
13973
13974	return {left: left, right: right};
13975}
13976
13977function ticksFromTimestamps(values, majorUnit) {
13978	var ticks = [];
13979	var i, ilen, value, major;
13980
13981	for (i = 0, ilen = values.length; i < ilen; ++i) {
13982		value = values[i];
13983		major = majorUnit ? value === +moment(value).startOf(majorUnit) : false;
13984
13985		ticks.push({
13986			value: value,
13987			major: major
13988		});
13989	}
13990
13991	return ticks;
13992}
13993
13994function determineLabelFormat(data, timeOpts) {
13995	var i, momentDate, hasTime;
13996	var ilen = data.length;
13997
13998	// find the label with the most parts (milliseconds, minutes, etc.)
13999	// format all labels with the same level of detail as the most specific label
14000	for (i = 0; i < ilen; i++) {
14001		momentDate = momentify(data[i], timeOpts);
14002		if (momentDate.millisecond() !== 0) {
14003			return 'MMM D, YYYY h:mm:ss.SSS a';
14004		}
14005		if (momentDate.second() !== 0 || momentDate.minute() !== 0 || momentDate.hour() !== 0) {
14006			hasTime = true;
14007		}
14008	}
14009	if (hasTime) {
14010		return 'MMM D, YYYY h:mm:ss a';
14011	}
14012	return 'MMM D, YYYY';
14013}
14014
14015module.exports = function(Chart) {
14016
14017	var defaultConfig = {
14018		position: 'bottom',
14019
14020		/**
14021		 * Data distribution along the scale:
14022		 * - 'linear': data are spread according to their time (distances can vary),
14023		 * - 'series': data are spread at the same distance from each other.
14024		 * @see https://github.com/chartjs/Chart.js/pull/4507
14025		 * @since 2.7.0
14026		 */
14027		distribution: 'linear',
14028
14029		/**
14030		 * Scale boundary strategy (bypassed by min/max time options)
14031		 * - `data`: make sure data are fully visible, ticks outside are removed
14032		 * - `ticks`: make sure ticks are fully visible, data outside are truncated
14033		 * @see https://github.com/chartjs/Chart.js/pull/4556
14034		 * @since 2.7.0
14035		 */
14036		bounds: 'data',
14037
14038		time: {
14039			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
14040			format: false, // DEPRECATED false == date objects, moment object, callback or a pattern string from http://momentjs.com/docs/#/parsing/string-format/
14041			unit: false, // false == automatic or override with week, month, year, etc.
14042			round: false, // none, or override with week, month, year, etc.
14043			displayFormat: false, // DEPRECATED
14044			isoWeekday: false, // override week start day - see http://momentjs.com/docs/#/get-set/iso-weekday/
14045			minUnit: 'millisecond',
14046
14047			// defaults to unit's corresponding unitFormat below or override using pattern string from http://momentjs.com/docs/#/displaying/format/
14048			displayFormats: {
14049				millisecond: 'h:mm:ss.SSS a', // 11:20:01.123 AM,
14050				second: 'h:mm:ss a', // 11:20:01 AM
14051				minute: 'h:mm a', // 11:20 AM
14052				hour: 'hA', // 5PM
14053				day: 'MMM D', // Sep 4
14054				week: 'll', // Week 46, or maybe "[W]WW - YYYY" ?
14055				month: 'MMM YYYY', // Sept 2015
14056				quarter: '[Q]Q - YYYY', // Q3
14057				year: 'YYYY' // 2015
14058			},
14059		},
14060		ticks: {
14061			autoSkip: false,
14062
14063			/**
14064			 * Ticks generation input values:
14065			 * - 'auto': generates "optimal" ticks based on scale size and time options.
14066			 * - 'data': generates ticks from data (including labels from data {t|x|y} objects).
14067			 * - 'labels': generates ticks from user given `data.labels` values ONLY.
14068			 * @see https://github.com/chartjs/Chart.js/pull/4507
14069			 * @since 2.7.0
14070			 */
14071			source: 'auto',
14072
14073			major: {
14074				enabled: false
14075			}
14076		}
14077	};
14078
14079	var TimeScale = Chart.Scale.extend({
14080		initialize: function() {
14081			if (!moment) {
14082				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');
14083			}
14084
14085			this.mergeTicksOptions();
14086
14087			Chart.Scale.prototype.initialize.call(this);
14088		},
14089
14090		update: function() {
14091			var me = this;
14092			var options = me.options;
14093
14094			// DEPRECATIONS: output a message only one time per update
14095			if (options.time && options.time.format) {
14096				console.warn('options.time.format is deprecated and replaced by options.time.parser.');
14097			}
14098
14099			return Chart.Scale.prototype.update.apply(me, arguments);
14100		},
14101
14102		/**
14103		 * Allows data to be referenced via 't' attribute
14104		 */
14105		getRightValue: function(rawValue) {
14106			if (rawValue && rawValue.t !== undefined) {
14107				rawValue = rawValue.t;
14108			}
14109			return Chart.Scale.prototype.getRightValue.call(this, rawValue);
14110		},
14111
14112		determineDataLimits: function() {
14113			var me = this;
14114			var chart = me.chart;
14115			var timeOpts = me.options.time;
14116			var unit = timeOpts.unit || 'day';
14117			var min = MAX_INTEGER;
14118			var max = MIN_INTEGER;
14119			var timestamps = [];
14120			var datasets = [];
14121			var labels = [];
14122			var i, j, ilen, jlen, data, timestamp;
14123
14124			// Convert labels to timestamps
14125			for (i = 0, ilen = chart.data.labels.length; i < ilen; ++i) {
14126				labels.push(parse(chart.data.labels[i], me));
14127			}
14128
14129			// Convert data to timestamps
14130			for (i = 0, ilen = (chart.data.datasets || []).length; i < ilen; ++i) {
14131				if (chart.isDatasetVisible(i)) {
14132					data = chart.data.datasets[i].data;
14133
14134					// Let's consider that all data have the same format.
14135					if (helpers.isObject(data[0])) {
14136						datasets[i] = [];
14137
14138						for (j = 0, jlen = data.length; j < jlen; ++j) {
14139							timestamp = parse(data[j], me);
14140							timestamps.push(timestamp);
14141							datasets[i][j] = timestamp;
14142						}
14143					} else {
14144						timestamps.push.apply(timestamps, labels);
14145						datasets[i] = labels.slice(0);
14146					}
14147				} else {
14148					datasets[i] = [];
14149				}
14150			}
14151
14152			if (labels.length) {
14153				// Sort labels **after** data have been converted
14154				labels = arrayUnique(labels).sort(sorter);
14155				min = Math.min(min, labels[0]);
14156				max = Math.max(max, labels[labels.length - 1]);
14157			}
14158
14159			if (timestamps.length) {
14160				timestamps = arrayUnique(timestamps).sort(sorter);
14161				min = Math.min(min, timestamps[0]);
14162				max = Math.max(max, timestamps[timestamps.length - 1]);
14163			}
14164
14165			min = parse(timeOpts.min, me) || min;
14166			max = parse(timeOpts.max, me) || max;
14167
14168			// In case there is no valid min/max, set limits based on unit time option
14169			min = min === MAX_INTEGER ? +moment().startOf(unit) : min;
14170			max = max === MIN_INTEGER ? +moment().endOf(unit) + 1 : max;
14171
14172			// Make sure that max is strictly higher than min (required by the lookup table)
14173			me.min = Math.min(min, max);
14174			me.max = Math.max(min + 1, max);
14175
14176			// PRIVATE
14177			me._horizontal = me.isHorizontal();
14178			me._table = [];
14179			me._timestamps = {
14180				data: timestamps,
14181				datasets: datasets,
14182				labels: labels
14183			};
14184		},
14185
14186		buildTicks: function() {
14187			var me = this;
14188			var min = me.min;
14189			var max = me.max;
14190			var options = me.options;
14191			var timeOpts = options.time;
14192			var timestamps = [];
14193			var ticks = [];
14194			var i, ilen, timestamp;
14195
14196			switch (options.ticks.source) {
14197			case 'data':
14198				timestamps = me._timestamps.data;
14199				break;
14200			case 'labels':
14201				timestamps = me._timestamps.labels;
14202				break;
14203			case 'auto':
14204			default:
14205				timestamps = generate(min, max, me.getLabelCapacity(min), options);
14206			}
14207
14208			if (options.bounds === 'ticks' && timestamps.length) {
14209				min = timestamps[0];
14210				max = timestamps[timestamps.length - 1];
14211			}
14212
14213			// Enforce limits with user min/max options
14214			min = parse(timeOpts.min, me) || min;
14215			max = parse(timeOpts.max, me) || max;
14216
14217			// Remove ticks outside the min/max range
14218			for (i = 0, ilen = timestamps.length; i < ilen; ++i) {
14219				timestamp = timestamps[i];
14220				if (timestamp >= min && timestamp <= max) {
14221					ticks.push(timestamp);
14222				}
14223			}
14224
14225			me.min = min;
14226			me.max = max;
14227
14228			// PRIVATE
14229			me._unit = timeOpts.unit || determineUnitForFormatting(ticks, timeOpts.minUnit, me.min, me.max);
14230			me._majorUnit = determineMajorUnit(me._unit);
14231			me._table = buildLookupTable(me._timestamps.data, min, max, options.distribution);
14232			me._offsets = computeOffsets(me._table, ticks, min, max, options);
14233			me._labelFormat = determineLabelFormat(me._timestamps.data, timeOpts);
14234
14235			return ticksFromTimestamps(ticks, me._majorUnit);
14236		},
14237
14238		getLabelForIndex: function(index, datasetIndex) {
14239			var me = this;
14240			var data = me.chart.data;
14241			var timeOpts = me.options.time;
14242			var label = data.labels && index < data.labels.length ? data.labels[index] : '';
14243			var value = data.datasets[datasetIndex].data[index];
14244
14245			if (helpers.isObject(value)) {
14246				label = me.getRightValue(value);
14247			}
14248			if (timeOpts.tooltipFormat) {
14249				return momentify(label, timeOpts).format(timeOpts.tooltipFormat);
14250			}
14251			if (typeof label === 'string') {
14252				return label;
14253			}
14254
14255			return momentify(label, timeOpts).format(me._labelFormat);
14256		},
14257
14258		/**
14259		 * Function to format an individual tick mark
14260		 * @private
14261		 */
14262		tickFormatFunction: function(tick, index, ticks, formatOverride) {
14263			var me = this;
14264			var options = me.options;
14265			var time = tick.valueOf();
14266			var formats = options.time.displayFormats;
14267			var minorFormat = formats[me._unit];
14268			var majorUnit = me._majorUnit;
14269			var majorFormat = formats[majorUnit];
14270			var majorTime = tick.clone().startOf(majorUnit).valueOf();
14271			var majorTickOpts = options.ticks.major;
14272			var major = majorTickOpts.enabled && majorUnit && majorFormat && time === majorTime;
14273			var label = tick.format(formatOverride ? formatOverride : major ? majorFormat : minorFormat);
14274			var tickOpts = major ? majorTickOpts : options.ticks.minor;
14275			var formatter = helpers.valueOrDefault(tickOpts.callback, tickOpts.userCallback);
14276
14277			return formatter ? formatter(label, index, ticks) : label;
14278		},
14279
14280		convertTicksToLabels: function(ticks) {
14281			var labels = [];
14282			var i, ilen;
14283
14284			for (i = 0, ilen = ticks.length; i < ilen; ++i) {
14285				labels.push(this.tickFormatFunction(moment(ticks[i].value), i, ticks));
14286			}
14287
14288			return labels;
14289		},
14290
14291		/**
14292		 * @private
14293		 */
14294		getPixelForOffset: function(time) {
14295			var me = this;
14296			var size = me._horizontal ? me.width : me.height;
14297			var start = me._horizontal ? me.left : me.top;
14298			var pos = interpolate(me._table, 'time', time, 'pos');
14299
14300			return start + size * (me._offsets.left + pos) / (me._offsets.left + 1 + me._offsets.right);
14301		},
14302
14303		getPixelForValue: function(value, index, datasetIndex) {
14304			var me = this;
14305			var time = null;
14306
14307			if (index !== undefined && datasetIndex !== undefined) {
14308				time = me._timestamps.datasets[datasetIndex][index];
14309			}
14310
14311			if (time === null) {
14312				time = parse(value, me);
14313			}
14314
14315			if (time !== null) {
14316				return me.getPixelForOffset(time);
14317			}
14318		},
14319
14320		getPixelForTick: function(index) {
14321			var ticks = this.getTicks();
14322			return index >= 0 && index < ticks.length ?
14323				this.getPixelForOffset(ticks[index].value) :
14324				null;
14325		},
14326
14327		getValueForPixel: function(pixel) {
14328			var me = this;
14329			var size = me._horizontal ? me.width : me.height;
14330			var start = me._horizontal ? me.left : me.top;
14331			var pos = (size ? (pixel - start) / size : 0) * (me._offsets.left + 1 + me._offsets.left) - me._offsets.right;
14332			var time = interpolate(me._table, 'pos', pos, 'time');
14333
14334			return moment(time);
14335		},
14336
14337		/**
14338		 * Crude approximation of what the label width might be
14339		 * @private
14340		 */
14341		getLabelWidth: function(label) {
14342			var me = this;
14343			var ticksOpts = me.options.ticks;
14344			var tickLabelWidth = me.ctx.measureText(label).width;
14345			var angle = helpers.toRadians(ticksOpts.maxRotation);
14346			var cosRotation = Math.cos(angle);
14347			var sinRotation = Math.sin(angle);
14348			var tickFontSize = helpers.valueOrDefault(ticksOpts.fontSize, defaults.global.defaultFontSize);
14349
14350			return (tickLabelWidth * cosRotation) + (tickFontSize * sinRotation);
14351		},
14352
14353		/**
14354		 * @private
14355		 */
14356		getLabelCapacity: function(exampleTime) {
14357			var me = this;
14358
14359			var formatOverride = me.options.time.displayFormats.millisecond;	// Pick the longest format for guestimation
14360
14361			var exampleLabel = me.tickFormatFunction(moment(exampleTime), 0, [], formatOverride);
14362			var tickLabelWidth = me.getLabelWidth(exampleLabel);
14363			var innerWidth = me.isHorizontal() ? me.width : me.height;
14364
14365			var capacity = Math.floor(innerWidth / tickLabelWidth);
14366			return capacity > 0 ? capacity : 1;
14367		}
14368	});
14369
14370	Chart.scaleService.registerScaleType('time', TimeScale, defaultConfig);
14371};
14372
14373},{"1":1,"25":25,"45":45}]},{},[7])(7)
14374});