P1aQBPw5

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			if (plugins.notify(me, 'beforeUpdate') === false) {
4196				return;
4197			}
4198
4199			// In case the entire data object changed
4200			me.tooltip._data = me.data;
4201
4202			// Make sure dataset controllers are updated and new controllers are reset
4203			var newControllers = me.buildOrUpdateControllers();
4204
4205			// Make sure all dataset controllers have correct meta data counts
4206			helpers.each(me.data.datasets, function(dataset, datasetIndex) {
4207				me.getDatasetMeta(datasetIndex).controller.buildOrUpdateElements();
4208			}, me);
4209
4210			me.updateLayout();
4211
4212			// Can only reset the new controllers after the scales have been updated
4213			if (me.options.animation && me.options.animation.duration) {
4214				helpers.each(newControllers, function(controller) {
4215					controller.reset();
4216				});
4217			}
4218
4219			me.updateDatasets();
4220
4221			// Need to reset tooltip in case it is displayed with elements that are removed
4222			// after update.
4223			me.tooltip.initialize();
4224
4225			// Last active contains items that were previously in the tooltip.
4226			// When we reset the tooltip, we need to clear it
4227			me.lastActive = [];
4228
4229			// Do this before render so that any plugins that need final scale updates can use it
4230			plugins.notify(me, 'afterUpdate');
4231
4232			if (me._bufferedRender) {
4233				me._bufferedRequest = {
4234					duration: config.duration,
4235					easing: config.easing,
4236					lazy: config.lazy
4237				};
4238			} else {
4239				me.render(config);
4240			}
4241		},
4242
4243		/**
4244		 * Updates the chart layout unless a plugin returns `false` to the `beforeLayout`
4245		 * hook, in which case, plugins will not be called on `afterLayout`.
4246		 * @private
4247		 */
4248		updateLayout: function() {
4249			var me = this;
4250
4251			if (plugins.notify(me, 'beforeLayout') === false) {
4252				return;
4253			}
4254
4255			layouts.update(this, this.width, this.height);
4256
4257			/**
4258			 * Provided for backward compatibility, use `afterLayout` instead.
4259			 * @method IPlugin#afterScaleUpdate
4260			 * @deprecated since version 2.5.0
4261			 * @todo remove at version 3
4262			 * @private
4263			 */
4264			plugins.notify(me, 'afterScaleUpdate');
4265			plugins.notify(me, 'afterLayout');
4266		},
4267
4268		/**
4269		 * Updates all datasets unless a plugin returns `false` to the `beforeDatasetsUpdate`
4270		 * hook, in which case, plugins will not be called on `afterDatasetsUpdate`.
4271		 * @private
4272		 */
4273		updateDatasets: function() {
4274			var me = this;
4275
4276			if (plugins.notify(me, 'beforeDatasetsUpdate') === false) {
4277				return;
4278			}
4279
4280			for (var i = 0, ilen = me.data.datasets.length; i < ilen; ++i) {
4281				me.updateDataset(i);
4282			}
4283
4284			plugins.notify(me, 'afterDatasetsUpdate');
4285		},
4286
4287		/**
4288		 * Updates dataset at index unless a plugin returns `false` to the `beforeDatasetUpdate`
4289		 * hook, in which case, plugins will not be called on `afterDatasetUpdate`.
4290		 * @private
4291		 */
4292		updateDataset: function(index) {
4293			var me = this;
4294			var meta = me.getDatasetMeta(index);
4295			var args = {
4296				meta: meta,
4297				index: index
4298			};
4299
4300			if (plugins.notify(me, 'beforeDatasetUpdate', [args]) === false) {
4301				return;
4302			}
4303
4304			meta.controller.update();
4305
4306			plugins.notify(me, 'afterDatasetUpdate', [args]);
4307		},
4308
4309		render: function(config) {
4310			var me = this;
4311
4312			if (!config || typeof config !== 'object') {
4313				// backwards compatibility
4314				config = {
4315					duration: config,
4316					lazy: arguments[1]
4317				};
4318			}
4319
4320			var duration = config.duration;
4321			var lazy = config.lazy;
4322
4323			if (plugins.notify(me, 'beforeRender') === false) {
4324				return;
4325			}
4326
4327			var animationOptions = me.options.animation;
4328			var onComplete = function(animation) {
4329				plugins.notify(me, 'afterRender');
4330				helpers.callback(animationOptions && animationOptions.onComplete, [animation], me);
4331			};
4332
4333			if (animationOptions && ((typeof duration !== 'undefined' && duration !== 0) || (typeof duration === 'undefined' && animationOptions.duration !== 0))) {
4334				var animation = new Chart.Animation({
4335					numSteps: (duration || animationOptions.duration) / 16.66, // 60 fps
4336					easing: config.easing || animationOptions.easing,
4337
4338					render: function(chart, animationObject) {
4339						var easingFunction = helpers.easing.effects[animationObject.easing];
4340						var currentStep = animationObject.currentStep;
4341						var stepDecimal = currentStep / animationObject.numSteps;
4342
4343						chart.draw(easingFunction(stepDecimal), stepDecimal, currentStep);
4344					},
4345
4346					onAnimationProgress: animationOptions.onProgress,
4347					onAnimationComplete: onComplete
4348				});
4349
4350				Chart.animationService.addAnimation(me, animation, duration, lazy);
4351			} else {
4352				me.draw();
4353
4354				// See https://github.com/chartjs/Chart.js/issues/3781
4355				onComplete(new Chart.Animation({numSteps: 0, chart: me}));
4356			}
4357
4358			return me;
4359		},
4360
4361		draw: function(easingValue) {
4362			var me = this;
4363
4364			me.clear();
4365
4366			if (helpers.isNullOrUndef(easingValue)) {
4367				easingValue = 1;
4368			}
4369
4370			me.transition(easingValue);
4371
4372			if (plugins.notify(me, 'beforeDraw', [easingValue]) === false) {
4373				return;
4374			}
4375
4376			// Draw all the scales
4377			helpers.each(me.boxes, function(box) {
4378				box.draw(me.chartArea);
4379			}, me);
4380
4381			if (me.scale) {
4382				me.scale.draw();
4383			}
4384
4385			me.drawDatasets(easingValue);
4386			me._drawTooltip(easingValue);
4387
4388			plugins.notify(me, 'afterDraw', [easingValue]);
4389		},
4390
4391		/**
4392		 * @private
4393		 */
4394		transition: function(easingValue) {
4395			var me = this;
4396
4397			for (var i = 0, ilen = (me.data.datasets || []).length; i < ilen; ++i) {
4398				if (me.isDatasetVisible(i)) {
4399					me.getDatasetMeta(i).controller.transition(easingValue);
4400				}
4401			}
4402
4403			me.tooltip.transition(easingValue);
4404		},
4405
4406		/**
4407		 * Draws all datasets unless a plugin returns `false` to the `beforeDatasetsDraw`
4408		 * hook, in which case, plugins will not be called on `afterDatasetsDraw`.
4409		 * @private
4410		 */
4411		drawDatasets: function(easingValue) {
4412			var me = this;
4413
4414			if (plugins.notify(me, 'beforeDatasetsDraw', [easingValue]) === false) {
4415				return;
4416			}
4417
4418			// Draw datasets reversed to support proper line stacking
4419			for (var i = (me.data.datasets || []).length - 1; i >= 0; --i) {
4420				if (me.isDatasetVisible(i)) {
4421					me.drawDataset(i, easingValue);
4422				}
4423			}
4424
4425			plugins.notify(me, 'afterDatasetsDraw', [easingValue]);
4426		},
4427
4428		/**
4429		 * Draws dataset at index unless a plugin returns `false` to the `beforeDatasetDraw`
4430		 * hook, in which case, plugins will not be called on `afterDatasetDraw`.
4431		 * @private
4432		 */
4433		drawDataset: function(index, easingValue) {
4434			var me = this;
4435			var meta = me.getDatasetMeta(index);
4436			var args = {
4437				meta: meta,
4438				index: index,
4439				easingValue: easingValue
4440			};
4441
4442			if (plugins.notify(me, 'beforeDatasetDraw', [args]) === false) {
4443				return;
4444			}
4445
4446			meta.controller.draw(easingValue);
4447
4448			plugins.notify(me, 'afterDatasetDraw', [args]);
4449		},
4450
4451		/**
4452		 * Draws tooltip unless a plugin returns `false` to the `beforeTooltipDraw`
4453		 * hook, in which case, plugins will not be called on `afterTooltipDraw`.
4454		 * @private
4455		 */
4456		_drawTooltip: function(easingValue) {
4457			var me = this;
4458			var tooltip = me.tooltip;
4459			var args = {
4460				tooltip: tooltip,
4461				easingValue: easingValue
4462			};
4463
4464			if (plugins.notify(me, 'beforeTooltipDraw', [args]) === false) {
4465				return;
4466			}
4467
4468			tooltip.draw();
4469
4470			plugins.notify(me, 'afterTooltipDraw', [args]);
4471		},
4472
4473		// Get the single element that was clicked on
4474		// @return : An object containing the dataset index and element index of the matching element. Also contains the rectangle that was draw
4475		getElementAtEvent: function(e) {
4476			return Interaction.modes.single(this, e);
4477		},
4478
4479		getElementsAtEvent: function(e) {
4480			return Interaction.modes.label(this, e, {intersect: true});
4481		},
4482
4483		getElementsAtXAxis: function(e) {
4484			return Interaction.modes['x-axis'](this, e, {intersect: true});
4485		},
4486
4487		getElementsAtEventForMode: function(e, mode, options) {
4488			var method = Interaction.modes[mode];
4489			if (typeof method === 'function') {
4490				return method(this, e, options);
4491			}
4492
4493			return [];
4494		},
4495
4496		getDatasetAtEvent: function(e) {
4497			return Interaction.modes.dataset(this, e, {intersect: true});
4498		},
4499
4500		getDatasetMeta: function(datasetIndex) {
4501			var me = this;
4502			var dataset = me.data.datasets[datasetIndex];
4503			if (!dataset._meta) {
4504				dataset._meta = {};
4505			}
4506
4507			var meta = dataset._meta[me.id];
4508			if (!meta) {
4509				meta = dataset._meta[me.id] = {
4510					type: null,
4511					data: [],
4512					dataset: null,
4513					controller: null,
4514					hidden: null,			// See isDatasetVisible() comment
4515					xAxisID: null,
4516					yAxisID: null
4517				};
4518			}
4519
4520			return meta;
4521		},
4522
4523		getVisibleDatasetCount: function() {
4524			var count = 0;
4525			for (var i = 0, ilen = this.data.datasets.length; i < ilen; ++i) {
4526				if (this.isDatasetVisible(i)) {
4527					count++;
4528				}
4529			}
4530			return count;
4531		},
4532
4533		isDatasetVisible: function(datasetIndex) {
4534			var meta = this.getDatasetMeta(datasetIndex);
4535
4536			// meta.hidden is a per chart dataset hidden flag override with 3 states: if true or false,
4537			// the dataset.hidden value is ignored, else if null, the dataset hidden state is returned.
4538			return typeof meta.hidden === 'boolean' ? !meta.hidden : !this.data.datasets[datasetIndex].hidden;
4539		},
4540
4541		generateLegend: function() {
4542			return this.options.legendCallback(this);
4543		},
4544
4545		/**
4546		 * @private
4547		 */
4548		destroyDatasetMeta: function(datasetIndex) {
4549			var id = this.id;
4550			var dataset = this.data.datasets[datasetIndex];
4551			var meta = dataset._meta && dataset._meta[id];
4552
4553			if (meta) {
4554				meta.controller.destroy();
4555				delete dataset._meta[id];
4556			}
4557		},
4558
4559		destroy: function() {
4560			var me = this;
4561			var canvas = me.canvas;
4562			var i, ilen;
4563
4564			me.stop();
4565
4566			// dataset controllers need to cleanup associated data
4567			for (i = 0, ilen = me.data.datasets.length; i < ilen; ++i) {
4568				me.destroyDatasetMeta(i);
4569			}
4570
4571			if (canvas) {
4572				me.unbindEvents();
4573				helpers.canvas.clear(me);
4574				platform.releaseContext(me.ctx);
4575				me.canvas = null;
4576				me.ctx = null;
4577			}
4578
4579			plugins.notify(me, 'destroy');
4580
4581			delete Chart.instances[me.id];
4582		},
4583
4584		toBase64Image: function() {
4585			return this.canvas.toDataURL.apply(this.canvas, arguments);
4586		},
4587
4588		initToolTip: function() {
4589			var me = this;
4590			me.tooltip = new Chart.Tooltip({
4591				_chart: me,
4592				_chartInstance: me, // deprecated, backward compatibility
4593				_data: me.data,
4594				_options: me.options.tooltips
4595			}, me);
4596		},
4597
4598		/**
4599		 * @private
4600		 */
4601		bindEvents: function() {
4602			var me = this;
4603			var listeners = me._listeners = {};
4604			var listener = function() {
4605				me.eventHandler.apply(me, arguments);
4606			};
4607
4608			helpers.each(me.options.events, function(type) {
4609				platform.addEventListener(me, type, listener);
4610				listeners[type] = listener;
4611			});
4612
4613			// Elements used to detect size change should not be injected for non responsive charts.
4614			// See https://github.com/chartjs/Chart.js/issues/2210
4615			if (me.options.responsive) {
4616				listener = function() {
4617					me.resize();
4618				};
4619
4620				platform.addEventListener(me, 'resize', listener);
4621				listeners.resize = listener;
4622			}
4623		},
4624
4625		/**
4626		 * @private
4627		 */
4628		unbindEvents: function() {
4629			var me = this;
4630			var listeners = me._listeners;
4631			if (!listeners) {
4632				return;
4633			}
4634
4635			delete me._listeners;
4636			helpers.each(listeners, function(listener, type) {
4637				platform.removeEventListener(me, type, listener);
4638			});
4639		},
4640
4641		updateHoverStyle: function(elements, mode, enabled) {
4642			var method = enabled ? 'setHoverStyle' : 'removeHoverStyle';
4643			var element, i, ilen;
4644
4645			for (i = 0, ilen = elements.length; i < ilen; ++i) {
4646				element = elements[i];
4647				if (element) {
4648					this.getDatasetMeta(element._datasetIndex).controller[method](element);
4649				}
4650			}
4651		},
4652
4653		/**
4654		 * @private
4655		 */
4656		eventHandler: function(e) {
4657			var me = this;
4658			var tooltip = me.tooltip;
4659
4660			if (plugins.notify(me, 'beforeEvent', [e]) === false) {
4661				return;
4662			}
4663
4664			// Buffer any update calls so that renders do not occur
4665			me._bufferedRender = true;
4666			me._bufferedRequest = null;
4667
4668			var changed = me.handleEvent(e);
4669			// for smooth tooltip animations issue #4989
4670			// the tooltip should be the source of change
4671			// Animation check workaround:
4672			// tooltip._start will be null when tooltip isn't animating
4673			if (tooltip) {
4674				changed = tooltip._start
4675					? tooltip.handleEvent(e)
4676					: changed | tooltip.handleEvent(e);
4677			}
4678
4679			plugins.notify(me, 'afterEvent', [e]);
4680
4681			var bufferedRequest = me._bufferedRequest;
4682			if (bufferedRequest) {
4683				// If we have an update that was triggered, we need to do a normal render
4684				me.render(bufferedRequest);
4685			} else if (changed && !me.animating) {
4686				// If entering, leaving, or changing elements, animate the change via pivot
4687				me.stop();
4688
4689				// We only need to render at this point. Updating will cause scales to be
4690				// recomputed generating flicker & using more memory than necessary.
4691				me.render(me.options.hover.animationDuration, true);
4692			}
4693
4694			me._bufferedRender = false;
4695			me._bufferedRequest = null;
4696
4697			return me;
4698		},
4699
4700		/**
4701		 * Handle an event
4702		 * @private
4703		 * @param {IEvent} event the event to handle
4704		 * @return {Boolean} true if the chart needs to re-render
4705		 */
4706		handleEvent: function(e) {
4707			var me = this;
4708			var options = me.options || {};
4709			var hoverOptions = options.hover;
4710			var changed = false;
4711
4712			me.lastActive = me.lastActive || [];
4713
4714			// Find Active Elements for hover and tooltips
4715			if (e.type === 'mouseout') {
4716				me.active = [];
4717			} else {
4718				me.active = me.getElementsAtEventForMode(e, hoverOptions.mode, hoverOptions);
4719			}
4720
4721			// Invoke onHover hook
4722			// Need to call with native event here to not break backwards compatibility
4723			helpers.callback(options.onHover || options.hover.onHover, [e.native, me.active], me);
4724
4725			if (e.type === 'mouseup' || e.type === 'click') {
4726				if (options.onClick) {
4727					// Use e.native here for backwards compatibility
4728					options.onClick.call(me, e.native, me.active);
4729				}
4730			}
4731
4732			// Remove styling for last active (even if it may still be active)
4733			if (me.lastActive.length) {
4734				me.updateHoverStyle(me.lastActive, hoverOptions.mode, false);
4735			}
4736
4737			// Built in hover styling
4738			if (me.active.length && hoverOptions.mode) {
4739				me.updateHoverStyle(me.active, hoverOptions.mode, true);
4740			}
4741
4742			changed = !helpers.arrayEquals(me.active, me.lastActive);
4743
4744			// Remember Last Actives
4745			me.lastActive = me.active;
4746
4747			return changed;
4748		}
4749	});
4750
4751	/**
4752	 * Provided for backward compatibility, use Chart instead.
4753	 * @class Chart.Controller
4754	 * @deprecated since version 2.6.0
4755	 * @todo remove at version 3
4756	 * @private
4757	 */
4758	Chart.Controller = Chart;
4759};
4760
4761},{"25":25,"28":28,"30":30,"31":31,"45":45,"48":48}],24:[function(require,module,exports){
4762'use strict';
4763
4764var helpers = require(45);
4765
4766module.exports = function(Chart) {
4767
4768	var arrayEvents = ['push', 'pop', 'shift', 'splice', 'unshift'];
4769
4770	/**
4771	 * Hooks the array methods that add or remove values ('push', pop', 'shift', 'splice',
4772	 * 'unshift') and notify the listener AFTER the array has been altered. Listeners are
4773	 * called on the 'onData*' callbacks (e.g. onDataPush, etc.) with same arguments.
4774	 */
4775	function listenArrayEvents(array, listener) {
4776		if (array._chartjs) {
4777			array._chartjs.listeners.push(listener);
4778			return;
4779		}
4780
4781		Object.defineProperty(array, '_chartjs', {
4782			configurable: true,
4783			enumerable: false,
4784			value: {
4785				listeners: [listener]
4786			}
4787		});
4788
4789		arrayEvents.forEach(function(key) {
4790			var method = 'onData' + key.charAt(0).toUpperCase() + key.slice(1);
4791			var base = array[key];
4792
4793			Object.defineProperty(array, key, {
4794				configurable: true,
4795				enumerable: false,
4796				value: function() {
4797					var args = Array.prototype.slice.call(arguments);
4798					var res = base.apply(this, args);
4799
4800					helpers.each(array._chartjs.listeners, function(object) {
4801						if (typeof object[method] === 'function') {
4802							object[method].apply(object, args);
4803						}
4804					});
4805
4806					return res;
4807				}
4808			});
4809		});
4810	}
4811
4812	/**
4813	 * Removes the given array event listener and cleanup extra attached properties (such as
4814	 * the _chartjs stub and overridden methods) if array doesn't have any more listeners.
4815	 */
4816	function unlistenArrayEvents(array, listener) {
4817		var stub = array._chartjs;
4818		if (!stub) {
4819			return;
4820		}
4821
4822		var listeners = stub.listeners;
4823		var index = listeners.indexOf(listener);
4824		if (index !== -1) {
4825			listeners.splice(index, 1);
4826		}
4827
4828		if (listeners.length > 0) {
4829			return;
4830		}
4831
4832		arrayEvents.forEach(function(key) {
4833			delete array[key];
4834		});
4835
4836		delete array._chartjs;
4837	}
4838
4839	// Base class for all dataset controllers (line, bar, etc)
4840	Chart.DatasetController = function(chart, datasetIndex) {
4841		this.initialize(chart, datasetIndex);
4842	};
4843
4844	helpers.extend(Chart.DatasetController.prototype, {
4845
4846		/**
4847		 * Element type used to generate a meta dataset (e.g. Chart.element.Line).
4848		 * @type {Chart.core.element}
4849		 */
4850		datasetElementType: null,
4851
4852		/**
4853		 * Element type used to generate a meta data (e.g. Chart.element.Point).
4854		 * @type {Chart.core.element}
4855		 */
4856		dataElementType: null,
4857
4858		initialize: function(chart, datasetIndex) {
4859			var me = this;
4860			me.chart = chart;
4861			me.index = datasetIndex;
4862			me.linkScales();
4863			me.addElements();
4864		},
4865
4866		updateIndex: function(datasetIndex) {
4867			this.index = datasetIndex;
4868		},
4869
4870		linkScales: function() {
4871			var me = this;
4872			var meta = me.getMeta();
4873			var dataset = me.getDataset();
4874
4875			if (meta.xAxisID === null || !(meta.xAxisID in me.chart.scales)) {
4876				meta.xAxisID = dataset.xAxisID || me.chart.options.scales.xAxes[0].id;
4877			}
4878			if (meta.yAxisID === null || !(meta.yAxisID in me.chart.scales)) {
4879				meta.yAxisID = dataset.yAxisID || me.chart.options.scales.yAxes[0].id;
4880			}
4881		},
4882
4883		getDataset: function() {
4884			return this.chart.data.datasets[this.index];
4885		},
4886
4887		getMeta: function() {
4888			return this.chart.getDatasetMeta(this.index);
4889		},
4890
4891		getScaleForId: function(scaleID) {
4892			return this.chart.scales[scaleID];
4893		},
4894
4895		reset: function() {
4896			this.update(true);
4897		},
4898
4899		/**
4900		 * @private
4901		 */
4902		destroy: function() {
4903			if (this._data) {
4904				unlistenArrayEvents(this._data, this);
4905			}
4906		},
4907
4908		createMetaDataset: function() {
4909			var me = this;
4910			var type = me.datasetElementType;
4911			return type && new type({
4912				_chart: me.chart,
4913				_datasetIndex: me.index
4914			});
4915		},
4916
4917		createMetaData: function(index) {
4918			var me = this;
4919			var type = me.dataElementType;
4920			return type && new type({
4921				_chart: me.chart,
4922				_datasetIndex: me.index,
4923				_index: index
4924			});
4925		},
4926
4927		addElements: function() {
4928			var me = this;
4929			var meta = me.getMeta();
4930			var data = me.getDataset().data || [];
4931			var metaData = meta.data;
4932			var i, ilen;
4933
4934			for (i = 0, ilen = data.length; i < ilen; ++i) {
4935				metaData[i] = metaData[i] || me.createMetaData(i);
4936			}
4937
4938			meta.dataset = meta.dataset || me.createMetaDataset();
4939		},
4940
4941		addElementAndReset: function(index) {
4942			var element = this.createMetaData(index);
4943			this.getMeta().data.splice(index, 0, element);
4944			this.updateElement(element, index, true);
4945		},
4946
4947		buildOrUpdateElements: function() {
4948			var me = this;
4949			var dataset = me.getDataset();
4950			var data = dataset.data || (dataset.data = []);
4951
4952			// In order to correctly handle data addition/deletion animation (an thus simulate
4953			// real-time charts), we need to monitor these data modifications and synchronize
4954			// the internal meta data accordingly.
4955			if (me._data !== data) {
4956				if (me._data) {
4957					// This case happens when the user replaced the data array instance.
4958					unlistenArrayEvents(me._data, me);
4959				}
4960
4961				listenArrayEvents(data, me);
4962				me._data = data;
4963			}
4964
4965			// Re-sync meta data in case the user replaced the data array or if we missed
4966			// any updates and so make sure that we handle number of datapoints changing.
4967			me.resyncElements();
4968		},
4969
4970		update: helpers.noop,
4971
4972		transition: function(easingValue) {
4973			var meta = this.getMeta();
4974			var elements = meta.data || [];
4975			var ilen = elements.length;
4976			var i = 0;
4977
4978			for (; i < ilen; ++i) {
4979				elements[i].transition(easingValue);
4980			}
4981
4982			if (meta.dataset) {
4983				meta.dataset.transition(easingValue);
4984			}
4985		},
4986
4987		draw: function() {
4988			var meta = this.getMeta();
4989			var elements = meta.data || [];
4990			var ilen = elements.length;
4991			var i = 0;
4992
4993			if (meta.dataset) {
4994				meta.dataset.draw();
4995			}
4996
4997			for (; i < ilen; ++i) {
4998				elements[i].draw();
4999			}
5000		},
5001
5002		removeHoverStyle: function(element, elementOpts) {
5003			var dataset = this.chart.data.datasets[element._datasetIndex];
5004			var index = element._index;
5005			var custom = element.custom || {};
5006			var valueOrDefault = helpers.valueAtIndexOrDefault;
5007			var model = element._model;
5008
5009			model.backgroundColor = custom.backgroundColor ? custom.backgroundColor : valueOrDefault(dataset.backgroundColor, index, elementOpts.backgroundColor);
5010			model.borderColor = custom.borderColor ? custom.borderColor : valueOrDefault(dataset.borderColor, index, elementOpts.borderColor);
5011			model.borderWidth = custom.borderWidth ? custom.borderWidth : valueOrDefault(dataset.borderWidth, index, elementOpts.borderWidth);
5012		},
5013
5014		setHoverStyle: function(element) {
5015			var dataset = this.chart.data.datasets[element._datasetIndex];
5016			var index = element._index;
5017			var custom = element.custom || {};
5018			var valueOrDefault = helpers.valueAtIndexOrDefault;
5019			var getHoverColor = helpers.getHoverColor;
5020			var model = element._model;
5021
5022			model.backgroundColor = custom.hoverBackgroundColor ? custom.hoverBackgroundColor : valueOrDefault(dataset.hoverBackgroundColor, index, getHoverColor(model.backgroundColor));
5023			model.borderColor = custom.hoverBorderColor ? custom.hoverBorderColor : valueOrDefault(dataset.hoverBorderColor, index, getHoverColor(model.borderColor));
5024			model.borderWidth = custom.hoverBorderWidth ? custom.hoverBorderWidth : valueOrDefault(dataset.hoverBorderWidth, index, model.borderWidth);
5025		},
5026
5027		/**
5028		 * @private
5029		 */
5030		resyncElements: function() {
5031			var me = this;
5032			var meta = me.getMeta();
5033			var data = me.getDataset().data;
5034			var numMeta = meta.data.length;
5035			var numData = data.length;
5036
5037			if (numData < numMeta) {
5038				meta.data.splice(numData, numMeta - numData);
5039			} else if (numData > numMeta) {
5040				me.insertElements(numMeta, numData - numMeta);
5041			}
5042		},
5043
5044		/**
5045		 * @private
5046		 */
5047		insertElements: function(start, count) {
5048			for (var i = 0; i < count; ++i) {
5049				this.addElementAndReset(start + i);
5050			}
5051		},
5052
5053		/**
5054		 * @private
5055		 */
5056		onDataPush: function() {
5057			this.insertElements(this.getDataset().data.length - 1, arguments.length);
5058		},
5059
5060		/**
5061		 * @private
5062		 */
5063		onDataPop: function() {
5064			this.getMeta().data.pop();
5065		},
5066
5067		/**
5068		 * @private
5069		 */
5070		onDataShift: function() {
5071			this.getMeta().data.shift();
5072		},
5073
5074		/**
5075		 * @private
5076		 */
5077		onDataSplice: function(start, count) {
5078			this.getMeta().data.splice(start, count);
5079			this.insertElements(start, arguments.length - 2);
5080		},
5081
5082		/**
5083		 * @private
5084		 */
5085		onDataUnshift: function() {
5086			this.insertElements(0, arguments.length);
5087		}
5088	});
5089
5090	Chart.DatasetController.extend = helpers.inherits;
5091};
5092
5093},{"45":45}],25:[function(require,module,exports){
5094'use strict';
5095
5096var helpers = require(45);
5097
5098module.exports = {
5099	/**
5100	 * @private
5101	 */
5102	_set: function(scope, values) {
5103		return helpers.merge(this[scope] || (this[scope] = {}), values);
5104	}
5105};
5106
5107},{"45":45}],26:[function(require,module,exports){
5108'use strict';
5109
5110var color = require(3);
5111var helpers = require(45);
5112
5113function interpolate(start, view, model, ease) {
5114	var keys = Object.keys(model);
5115	var i, ilen, key, actual, origin, target, type, c0, c1;
5116
5117	for (i = 0, ilen = keys.length; i < ilen; ++i) {
5118		key = keys[i];
5119
5120		target = model[key];
5121
5122		// if a value is added to the model after pivot() has been called, the view
5123		// doesn't contain it, so let's initialize the view to the target value.
5124		if (!view.hasOwnProperty(key)) {
5125			view[key] = target;
5126		}
5127
5128		actual = view[key];
5129
5130		if (actual === target || key[0] === '_') {
5131			continue;
5132		}
5133
5134		if (!start.hasOwnProperty(key)) {
5135			start[key] = actual;
5136		}
5137
5138		origin = start[key];
5139
5140		type = typeof target;
5141
5142		if (type === typeof origin) {
5143			if (type === 'string') {
5144				c0 = color(origin);
5145				if (c0.valid) {
5146					c1 = color(target);
5147					if (c1.valid) {
5148						view[key] = c1.mix(c0, ease).rgbString();
5149						continue;
5150					}
5151				}
5152			} else if (type === 'number' && isFinite(origin) && isFinite(target)) {
5153				view[key] = origin + (target - origin) * ease;
5154				continue;
5155			}
5156		}
5157
5158		view[key] = target;
5159	}
5160}
5161
5162var Element = function(configuration) {
5163	helpers.extend(this, configuration);
5164	this.initialize.apply(this, arguments);
5165};
5166
5167helpers.extend(Element.prototype, {
5168
5169	initialize: function() {
5170		this.hidden = false;
5171	},
5172
5173	pivot: function() {
5174		var me = this;
5175		if (!me._view) {
5176			me._view = helpers.clone(me._model);
5177		}
5178		me._start = {};
5179		return me;
5180	},
5181
5182	transition: function(ease) {
5183		var me = this;
5184		var model = me._model;
5185		var start = me._start;
5186		var view = me._view;
5187
5188		// No animation -> No Transition
5189		if (!model || ease === 1) {
5190			me._view = model;
5191			me._start = null;
5192			return me;
5193		}
5194
5195		if (!view) {
5196			view = me._view = {};
5197		}
5198
5199		if (!start) {
5200			start = me._start = {};
5201		}
5202
5203		interpolate(start, view, model, ease);
5204
5205		return me;
5206	},
5207
5208	tooltipPosition: function() {
5209		return {
5210			x: this._model.x,
5211			y: this._model.y
5212		};
5213	},
5214
5215	hasValue: function() {
5216		return helpers.isNumber(this._model.x) && helpers.isNumber(this._model.y);
5217	}
5218});
5219
5220Element.extend = helpers.inherits;
5221
5222module.exports = Element;
5223
5224},{"3":3,"45":45}],27:[function(require,module,exports){
5225/* global window: false */
5226/* global document: false */
5227'use strict';
5228
5229var color = require(3);
5230var defaults = require(25);
5231var helpers = require(45);
5232
5233module.exports = function(Chart) {
5234
5235	// -- Basic js utility methods
5236
5237	helpers.configMerge = function(/* objects ... */) {
5238		return helpers.merge(helpers.clone(arguments[0]), [].slice.call(arguments, 1), {
5239			merger: function(key, target, source, options) {
5240				var tval = target[key] || {};
5241				var sval = source[key];
5242
5243				if (key === 'scales') {
5244					// scale config merging is complex. Add our own function here for that
5245					target[key] = helpers.scaleMerge(tval, sval);
5246				} else if (key === 'scale') {
5247					// used in polar area & radar charts since there is only one scale
5248					target[key] = helpers.merge(tval, [Chart.scaleService.getScaleDefaults(sval.type), sval]);
5249				} else {
5250					helpers._merger(key, target, source, options);
5251				}
5252			}
5253		});
5254	};
5255
5256	helpers.scaleMerge = function(/* objects ... */) {
5257		return helpers.merge(helpers.clone(arguments[0]), [].slice.call(arguments, 1), {
5258			merger: function(key, target, source, options) {
5259				if (key === 'xAxes' || key === 'yAxes') {
5260					var slen = source[key].length;
5261					var i, type, scale;
5262
5263					if (!target[key]) {
5264						target[key] = [];
5265					}
5266
5267					for (i = 0; i < slen; ++i) {
5268						scale = source[key][i];
5269						type = helpers.valueOrDefault(scale.type, key === 'xAxes' ? 'category' : 'linear');
5270
5271						if (i >= target[key].length) {
5272							target[key].push({});
5273						}
5274
5275						if (!target[key][i].type || (scale.type && scale.type !== target[key][i].type)) {
5276							// new/untyped scale or type changed: let's apply the new defaults
5277							// then merge source scale to correctly overwrite the defaults.
5278							helpers.merge(target[key][i], [Chart.scaleService.getScaleDefaults(type), scale]);
5279						} else {
5280							// scales type are the same
5281							helpers.merge(target[key][i], scale);
5282						}
5283					}
5284				} else {
5285					helpers._merger(key, target, source, options);
5286				}
5287			}
5288		});
5289	};
5290
5291	helpers.where = function(collection, filterCallback) {
5292		if (helpers.isArray(collection) && Array.prototype.filter) {
5293			return collection.filter(filterCallback);
5294		}
5295		var filtered = [];
5296
5297		helpers.each(collection, function(item) {
5298			if (filterCallback(item)) {
5299				filtered.push(item);
5300			}
5301		});
5302
5303		return filtered;
5304	};
5305	helpers.findIndex = Array.prototype.findIndex ?
5306		function(array, callback, scope) {
5307			return array.findIndex(callback, scope);
5308		} :
5309		function(array, callback, scope) {
5310			scope = scope === undefined ? array : scope;
5311			for (var i = 0, ilen = array.length; i < ilen; ++i) {
5312				if (callback.call(scope, array[i], i, array)) {
5313					return i;
5314				}
5315			}
5316			return -1;
5317		};
5318	helpers.findNextWhere = function(arrayToSearch, filterCallback, startIndex) {
5319		// Default to start of the array
5320		if (helpers.isNullOrUndef(startIndex)) {
5321			startIndex = -1;
5322		}
5323		for (var i = startIndex + 1; i < arrayToSearch.length; i++) {
5324			var currentItem = arrayToSearch[i];
5325			if (filterCallback(currentItem)) {
5326				return currentItem;
5327			}
5328		}
5329	};
5330	helpers.findPreviousWhere = function(arrayToSearch, filterCallback, startIndex) {
5331		// Default to end of the array
5332		if (helpers.isNullOrUndef(startIndex)) {
5333			startIndex = arrayToSearch.length;
5334		}
5335		for (var i = startIndex - 1; i >= 0; i--) {
5336			var currentItem = arrayToSearch[i];
5337			if (filterCallback(currentItem)) {
5338				return currentItem;
5339			}
5340		}
5341	};
5342
5343	// -- Math methods
5344	helpers.isNumber = function(n) {
5345		return !isNaN(parseFloat(n)) && isFinite(n);
5346	};
5347	helpers.almostEquals = function(x, y, epsilon) {
5348		return Math.abs(x - y) < epsilon;
5349	};
5350	helpers.almostWhole = function(x, epsilon) {
5351		var rounded = Math.round(x);
5352		return (((rounded - epsilon) < x) && ((rounded + epsilon) > x));
5353	};
5354	helpers.max = function(array) {
5355		return array.reduce(function(max, value) {
5356			if (!isNaN(value)) {
5357				return Math.max(max, value);
5358			}
5359			return max;
5360		}, Number.NEGATIVE_INFINITY);
5361	};
5362	helpers.min = function(array) {
5363		return array.reduce(function(min, value) {
5364			if (!isNaN(value)) {
5365				return Math.min(min, value);
5366			}
5367			return min;
5368		}, Number.POSITIVE_INFINITY);
5369	};
5370	helpers.sign = Math.sign ?
5371		function(x) {
5372			return Math.sign(x);
5373		} :
5374		function(x) {
5375			x = +x; // convert to a number
5376			if (x === 0 || isNaN(x)) {
5377				return x;
5378			}
5379			return x > 0 ? 1 : -1;
5380		};
5381	helpers.log10 = Math.log10 ?
5382		function(x) {
5383			return Math.log10(x);
5384		} :
5385		function(x) {
5386			return Math.log(x) / Math.LN10;
5387		};
5388	helpers.toRadians = function(degrees) {
5389		return degrees * (Math.PI / 180);
5390	};
5391	helpers.toDegrees = function(radians) {
5392		return radians * (180 / Math.PI);
5393	};
5394	// Gets the angle from vertical upright to the point about a centre.
5395	helpers.getAngleFromPoint = function(centrePoint, anglePoint) {
5396		var distanceFromXCenter = anglePoint.x - centrePoint.x;
5397		var distanceFromYCenter = anglePoint.y - centrePoint.y;
5398		var radialDistanceFromCenter = Math.sqrt(distanceFromXCenter * distanceFromXCenter + distanceFromYCenter * distanceFromYCenter);
5399
5400		var angle = Math.atan2(distanceFromYCenter, distanceFromXCenter);
5401
5402		if (angle < (-0.5 * Math.PI)) {
5403			angle += 2.0 * Math.PI; // make sure the returned angle is in the range of (-PI/2, 3PI/2]
5404		}
5405
5406		return {
5407			angle: angle,
5408			distance: radialDistanceFromCenter
5409		};
5410	};
5411	helpers.distanceBetweenPoints = function(pt1, pt2) {
5412		return Math.sqrt(Math.pow(pt2.x - pt1.x, 2) + Math.pow(pt2.y - pt1.y, 2));
5413	};
5414	helpers.aliasPixel = function(pixelWidth) {
5415		return (pixelWidth % 2 === 0) ? 0 : 0.5;
5416	};
5417	helpers.splineCurve = function(firstPoint, middlePoint, afterPoint, t) {
5418		// Props to Rob Spencer at scaled innovation for his post on splining between points
5419		// http://scaledinnovation.com/analytics/splines/aboutSplines.html
5420
5421		// This function must also respect "skipped" points
5422
5423		var previous = firstPoint.skip ? middlePoint : firstPoint;
5424		var current = middlePoint;
5425		var next = afterPoint.skip ? middlePoint : afterPoint;
5426
5427		var d01 = Math.sqrt(Math.pow(current.x - previous.x, 2) + Math.pow(current.y - previous.y, 2));
5428		var d12 = Math.sqrt(Math.pow(next.x - current.x, 2) + Math.pow(next.y - current.y, 2));
5429
5430		var s01 = d01 / (d01 + d12);
5431		var s12 = d12 / (d01 + d12);
5432
5433		// If all points are the same, s01 & s02 will be inf
5434		s01 = isNaN(s01) ? 0 : s01;
5435		s12 = isNaN(s12) ? 0 : s12;
5436
5437		var fa = t * s01; // scaling factor for triangle Ta
5438		var fb = t * s12;
5439
5440		return {
5441			previous: {
5442				x: current.x - fa * (next.x - previous.x),
5443				y: current.y - fa * (next.y - previous.y)
5444			},
5445			next: {
5446				x: current.x + fb * (next.x - previous.x),
5447				y: current.y + fb * (next.y - previous.y)
5448			}
5449		};
5450	};
5451	helpers.EPSILON = Number.EPSILON || 1e-14;
5452	helpers.splineCurveMonotone = function(points) {
5453		// This function calculates Bézier control points in a similar way than |splineCurve|,
5454		// but preserves monotonicity of the provided data and ensures no local extremums are added
5455		// between the dataset discrete points due to the interpolation.
5456		// See : https://en.wikipedia.org/wiki/Monotone_cubic_interpolation
5457
5458		var pointsWithTangents = (points || []).map(function(point) {
5459			return {
5460				model: point._model,
5461				deltaK: 0,
5462				mK: 0
5463			};
5464		});
5465
5466		// Calculate slopes (deltaK) and initialize tangents (mK)
5467		var pointsLen = pointsWithTangents.length;
5468		var i, pointBefore, pointCurrent, pointAfter;
5469		for (i = 0; i < pointsLen; ++i) {
5470			pointCurrent = pointsWithTangents[i];
5471			if (pointCurrent.model.skip) {
5472				continue;
5473			}
5474
5475			pointBefore = i > 0 ? pointsWithTangents[i - 1] : null;
5476			pointAfter = i < pointsLen - 1 ? pointsWithTangents[i + 1] : null;
5477			if (pointAfter && !pointAfter.model.skip) {
5478				var slopeDeltaX = (pointAfter.model.x - pointCurrent.model.x);
5479
5480				// In the case of two points that appear at the same x pixel, slopeDeltaX is 0
5481				pointCurrent.deltaK = slopeDeltaX !== 0 ? (pointAfter.model.y - pointCurrent.model.y) / slopeDeltaX : 0;
5482			}
5483
5484			if (!pointBefore || pointBefore.model.skip) {
5485				pointCurrent.mK = pointCurrent.deltaK;
5486			} else if (!pointAfter || pointAfter.model.skip) {
5487				pointCurrent.mK = pointBefore.deltaK;
5488			} else if (this.sign(pointBefore.deltaK) !== this.sign(pointCurrent.deltaK)) {
5489				pointCurrent.mK = 0;
5490			} else {
5491				pointCurrent.mK = (pointBefore.deltaK + pointCurrent.deltaK) / 2;
5492			}
5493		}
5494
5495		// Adjust tangents to ensure monotonic properties
5496		var alphaK, betaK, tauK, squaredMagnitude;
5497		for (i = 0; i < pointsLen - 1; ++i) {
5498			pointCurrent = pointsWithTangents[i];
5499			pointAfter = pointsWithTangents[i + 1];
5500			if (pointCurrent.model.skip || pointAfter.model.skip) {
5501				continue;
5502			}
5503
5504			if (helpers.almostEquals(pointCurrent.deltaK, 0, this.EPSILON)) {
5505				pointCurrent.mK = pointAfter.mK = 0;
5506				continue;
5507			}
5508
5509			alphaK = pointCurrent.mK / pointCurrent.deltaK;
5510			betaK = pointAfter.mK / pointCurrent.deltaK;
5511			squaredMagnitude = Math.pow(alphaK, 2) + Math.pow(betaK, 2);
5512			if (squaredMagnitude <= 9) {
5513				continue;
5514			}
5515
5516			tauK = 3 / Math.sqrt(squaredMagnitude);
5517			pointCurrent.mK = alphaK * tauK * pointCurrent.deltaK;
5518			pointAfter.mK = betaK * tauK * pointCurrent.deltaK;
5519		}
5520
5521		// Compute control points
5522		var deltaX;
5523		for (i = 0; i < pointsLen; ++i) {
5524			pointCurrent = pointsWithTangents[i];
5525			if (pointCurrent.model.skip) {
5526				continue;
5527			}
5528
5529			pointBefore = i > 0 ? pointsWithTangents[i - 1] : null;
5530			pointAfter = i < pointsLen - 1 ? pointsWithTangents[i + 1] : null;
5531			if (pointBefore && !pointBefore.model.skip) {
5532				deltaX = (pointCurrent.model.x - pointBefore.model.x) / 3;
5533				pointCurrent.model.controlPointPreviousX = pointCurrent.model.x - deltaX;
5534				pointCurrent.model.controlPointPreviousY = pointCurrent.model.y - deltaX * pointCurrent.mK;
5535			}
5536			if (pointAfter && !pointAfter.model.skip) {
5537				deltaX = (pointAfter.model.x - pointCurrent.model.x) / 3;
5538				pointCurrent.model.controlPointNextX = pointCurrent.model.x + deltaX;
5539				pointCurrent.model.controlPointNextY = pointCurrent.model.y + deltaX * pointCurrent.mK;
5540			}
5541		}
5542	};
5543	helpers.nextItem = function(collection, index, loop) {
5544		if (loop) {
5545			return index >= collection.length - 1 ? collection[0] : collection[index + 1];
5546		}
5547		return index >= collection.length - 1 ? collection[collection.length - 1] : collection[index + 1];
5548	};
5549	helpers.previousItem = function(collection, index, loop) {
5550		if (loop) {
5551			return index <= 0 ? collection[collection.length - 1] : collection[index - 1];
5552		}
5553		return index <= 0 ? collection[0] : collection[index - 1];
5554	};
5555	// Implementation of the nice number algorithm used in determining where axis labels will go
5556	helpers.niceNum = function(range, round) {
5557		var exponent = Math.floor(helpers.log10(range));
5558		var fraction = range / Math.pow(10, exponent);
5559		var niceFraction;
5560
5561		if (round) {
5562			if (fraction < 1.5) {
5563				niceFraction = 1;
5564			} else if (fraction < 3) {
5565				niceFraction = 2;
5566			} else if (fraction < 7) {
5567				niceFraction = 5;
5568			} else {
5569				niceFraction = 10;
5570			}
5571		} else if (fraction <= 1.0) {
5572			niceFraction = 1;
5573		} else if (fraction <= 2) {
5574			niceFraction = 2;
5575		} else if (fraction <= 5) {
5576			niceFraction = 5;
5577		} else {
5578			niceFraction = 10;
5579		}
5580
5581		return niceFraction * Math.pow(10, exponent);
5582	};
5583	// Request animation polyfill - http://www.paulirish.com/2011/requestanimationframe-for-smart-animating/
5584	helpers.requestAnimFrame = (function() {
5585		if (typeof window === 'undefined') {
5586			return function(callback) {
5587				callback();
5588			};
5589		}
5590		return window.requestAnimationFrame ||
5591			window.webkitRequestAnimationFrame ||
5592			window.mozRequestAnimationFrame ||
5593			window.oRequestAnimationFrame ||
5594			window.msRequestAnimationFrame ||
5595			function(callback) {
5596				return window.setTimeout(callback, 1000 / 60);
5597			};
5598	}());
5599	// -- DOM methods
5600	helpers.getRelativePosition = function(evt, chart) {
5601		var mouseX, mouseY;
5602		var e = evt.originalEvent || evt;
5603		var canvas = evt.currentTarget || evt.srcElement;
5604		var boundingRect = canvas.getBoundingClientRect();
5605
5606		var touches = e.touches;
5607		if (touches && touches.length > 0) {
5608			mouseX = touches[0].clientX;
5609			mouseY = touches[0].clientY;
5610
5611		} else {
5612			mouseX = e.clientX;
5613			mouseY = e.clientY;
5614		}
5615
5616		// Scale mouse coordinates into canvas coordinates
5617		// by following the pattern laid out by 'jerryj' in the comments of
5618		// http://www.html5canvastutorials.com/advanced/html5-canvas-mouse-coordinates/
5619		var paddingLeft = parseFloat(helpers.getStyle(canvas, 'padding-left'));
5620		var paddingTop = parseFloat(helpers.getStyle(canvas, 'padding-top'));
5621		var paddingRight = parseFloat(helpers.getStyle(canvas, 'padding-right'));
5622		var paddingBottom = parseFloat(helpers.getStyle(canvas, 'padding-bottom'));
5623		var width = boundingRect.right - boundingRect.left - paddingLeft - paddingRight;
5624		var height = boundingRect.bottom - boundingRect.top - paddingTop - paddingBottom;
5625
5626		// We divide by the current device pixel ratio, because the canvas is scaled up by that amount in each direction. However
5627		// the backend model is in unscaled coordinates. Since we are going to deal with our model coordinates, we go back here
5628		mouseX = Math.round((mouseX - boundingRect.left - paddingLeft) / (width) * canvas.width / chart.currentDevicePixelRatio);
5629		mouseY = Math.round((mouseY - boundingRect.top - paddingTop) / (height) * canvas.height / chart.currentDevicePixelRatio);
5630
5631		return {
5632			x: mouseX,
5633			y: mouseY
5634		};
5635
5636	};
5637
5638	// Private helper function to convert max-width/max-height values that may be percentages into a number
5639	function parseMaxStyle(styleValue, node, parentProperty) {
5640		var valueInPixels;
5641		if (typeof styleValue === 'string') {
5642			valueInPixels = parseInt(styleValue, 10);
5643
5644			if (styleValue.indexOf('%') !== -1) {
5645				// percentage * size in dimension
5646				valueInPixels = valueInPixels / 100 * node.parentNode[parentProperty];
5647			}
5648		} else {
5649			valueInPixels = styleValue;
5650		}
5651
5652		return valueInPixels;
5653	}
5654
5655	/**
5656	 * Returns if the given value contains an effective constraint.
5657	 * @private
5658	 */
5659	function isConstrainedValue(value) {
5660		return value !== undefined && value !== null && value !== 'none';
5661	}
5662
5663	// Private helper to get a constraint dimension
5664	// @param domNode : the node to check the constraint on
5665	// @param maxStyle : the style that defines the maximum for the direction we are using (maxWidth / maxHeight)
5666	// @param percentageProperty : property of parent to use when calculating width as a percentage
5667	// @see http://www.nathanaeljones.com/blog/2013/reading-max-width-cross-browser
5668	function getConstraintDimension(domNode, maxStyle, percentageProperty) {
5669		var view = document.defaultView;
5670		var parentNode = domNode.parentNode;
5671		var constrainedNode = view.getComputedStyle(domNode)[maxStyle];
5672		var constrainedContainer = view.getComputedStyle(parentNode)[maxStyle];
5673		var hasCNode = isConstrainedValue(constrainedNode);
5674		var hasCContainer = isConstrainedValue(constrainedContainer);
5675		var infinity = Number.POSITIVE_INFINITY;
5676
5677		if (hasCNode || hasCContainer) {
5678			return Math.min(
5679				hasCNode ? parseMaxStyle(constrainedNode, domNode, percentageProperty) : infinity,
5680				hasCContainer ? parseMaxStyle(constrainedContainer, parentNode, percentageProperty) : infinity);
5681		}
5682
5683		return 'none';
5684	}
5685	// returns Number or undefined if no constraint
5686	helpers.getConstraintWidth = function(domNode) {
5687		return getConstraintDimension(domNode, 'max-width', 'clientWidth');
5688	};
5689	// returns Number or undefined if no constraint
5690	helpers.getConstraintHeight = function(domNode) {
5691		return getConstraintDimension(domNode, 'max-height', 'clientHeight');
5692	};
5693	helpers.getMaximumWidth = function(domNode) {
5694		var container = domNode.parentNode;
5695		if (!container) {
5696			return domNode.clientWidth;
5697		}
5698
5699		var paddingLeft = parseInt(helpers.getStyle(container, 'padding-left'), 10);
5700		var paddingRight = parseInt(helpers.getStyle(container, 'padding-right'), 10);
5701		var w = container.clientWidth - paddingLeft - paddingRight;
5702		var cw = helpers.getConstraintWidth(domNode);
5703		return isNaN(cw) ? w : Math.min(w, cw);
5704	};
5705	helpers.getMaximumHeight = function(domNode) {
5706		var container = domNode.parentNode;
5707		if (!container) {
5708			return domNode.clientHeight;
5709		}
5710
5711		var paddingTop = parseInt(helpers.getStyle(container, 'padding-top'), 10);
5712		var paddingBottom = parseInt(helpers.getStyle(container, 'padding-bottom'), 10);
5713		var h = container.clientHeight - paddingTop - paddingBottom;
5714		var ch = helpers.getConstraintHeight(domNode);
5715		return isNaN(ch) ? h : Math.min(h, ch);
5716	};
5717	helpers.getStyle = function(el, property) {
5718		return el.currentStyle ?
5719			el.currentStyle[property] :
5720			document.defaultView.getComputedStyle(el, null).getPropertyValue(property);
5721	};
5722	helpers.retinaScale = function(chart, forceRatio) {
5723		var pixelRatio = chart.currentDevicePixelRatio = forceRatio || window.devicePixelRatio || 1;
5724		if (pixelRatio === 1) {
5725			return;
5726		}
5727
5728		var canvas = chart.canvas;
5729		var height = chart.height;
5730		var width = chart.width;
5731
5732		canvas.height = height * pixelRatio;
5733		canvas.width = width * pixelRatio;
5734		chart.ctx.scale(pixelRatio, pixelRatio);
5735
5736		// If no style has been set on the canvas, the render size is used as display size,
5737		// making the chart visually bigger, so let's enforce it to the "correct" values.
5738		// See https://github.com/chartjs/Chart.js/issues/3575
5739		if (!canvas.style.height && !canvas.style.width) {
5740			canvas.style.height = height + 'px';
5741			canvas.style.width = width + 'px';
5742		}
5743	};
5744	// -- Canvas methods
5745	helpers.fontString = function(pixelSize, fontStyle, fontFamily) {
5746		return fontStyle + ' ' + pixelSize + 'px ' + fontFamily;
5747	};
5748	helpers.longestText = function(ctx, font, arrayOfThings, cache) {
5749		cache = cache || {};
5750		var data = cache.data = cache.data || {};
5751		var gc = cache.garbageCollect = cache.garbageCollect || [];
5752
5753		if (cache.font !== font) {
5754			data = cache.data = {};
5755			gc = cache.garbageCollect = [];
5756			cache.font = font;
5757		}
5758
5759		ctx.font = font;
5760		var longest = 0;
5761		helpers.each(arrayOfThings, function(thing) {
5762			// Undefined strings and arrays should not be measured
5763			if (thing !== undefined && thing !== null && helpers.isArray(thing) !== true) {
5764				longest = helpers.measureText(ctx, data, gc, longest, thing);
5765			} else if (helpers.isArray(thing)) {
5766				// if it is an array lets measure each element
5767				// to do maybe simplify this function a bit so we can do this more recursively?
5768				helpers.each(thing, function(nestedThing) {
5769					// Undefined strings and arrays should not be measured
5770					if (nestedThing !== undefined && nestedThing !== null && !helpers.isArray(nestedThing)) {
5771						longest = helpers.measureText(ctx, data, gc, longest, nestedThing);
5772					}
5773				});
5774			}
5775		});
5776
5777		var gcLen = gc.length / 2;
5778		if (gcLen > arrayOfThings.length) {
5779			for (var i = 0; i < gcLen; i++) {
5780				delete data[gc[i]];
5781			}
5782			gc.splice(0, gcLen);
5783		}
5784		return longest;
5785	};
5786	helpers.measureText = function(ctx, data, gc, longest, string) {
5787		var textWidth = data[string];
5788		if (!textWidth) {
5789			textWidth = data[string] = ctx.measureText(string).width;
5790			gc.push(string);
5791		}
5792		if (textWidth > longest) {
5793			longest = textWidth;
5794		}
5795		return longest;
5796	};
5797	helpers.numberOfLabelLines = function(arrayOfThings) {
5798		var numberOfLines = 1;
5799		helpers.each(arrayOfThings, function(thing) {
5800			if (helpers.isArray(thing)) {
5801				if (thing.length > numberOfLines) {
5802					numberOfLines = thing.length;
5803				}
5804			}
5805		});
5806		return numberOfLines;
5807	};
5808
5809	helpers.color = !color ?
5810		function(value) {
5811			console.error('Color.js not found!');
5812			return value;
5813		} :
5814		function(value) {
5815			/* global CanvasGradient */
5816			if (value instanceof CanvasGradient) {
5817				value = defaults.global.defaultColor;
5818			}
5819
5820			return color(value);
5821		};
5822
5823	helpers.getHoverColor = function(colorValue) {
5824		/* global CanvasPattern */
5825		return (colorValue instanceof CanvasPattern) ?
5826			colorValue :
5827			helpers.color(colorValue).saturate(0.5).darken(0.1).rgbString();
5828	};
5829};
5830
5831},{"25":25,"3":3,"45":45}],28:[function(require,module,exports){
5832'use strict';
5833
5834var helpers = require(45);
5835
5836/**
5837 * Helper function to get relative position for an event
5838 * @param {Event|IEvent} event - The event to get the position for
5839 * @param {Chart} chart - The chart
5840 * @returns {Point} the event position
5841 */
5842function getRelativePosition(e, chart) {
5843	if (e.native) {
5844		return {
5845			x: e.x,
5846			y: e.y
5847		};
5848	}
5849
5850	return helpers.getRelativePosition(e, chart);
5851}
5852
5853/**
5854 * Helper function to traverse all of the visible elements in the chart
5855 * @param chart {chart} the chart
5856 * @param handler {Function} the callback to execute for each visible item
5857 */
5858function parseVisibleItems(chart, handler) {
5859	var datasets = chart.data.datasets;
5860	var meta, i, j, ilen, jlen;
5861
5862	for (i = 0, ilen = datasets.length; i < ilen; ++i) {
5863		if (!chart.isDatasetVisible(i)) {
5864			continue;
5865		}
5866
5867		meta = chart.getDatasetMeta(i);
5868		for (j = 0, jlen = meta.data.length; j < jlen; ++j) {
5869			var element = meta.data[j];
5870			if (!element._view.skip) {
5871				handler(element);
5872			}
5873		}
5874	}
5875}
5876
5877/**
5878 * Helper function to get the items that intersect the event position
5879 * @param items {ChartElement[]} elements to filter
5880 * @param position {Point} the point to be nearest to
5881 * @return {ChartElement[]} the nearest items
5882 */
5883function getIntersectItems(chart, position) {
5884	var elements = [];
5885
5886	parseVisibleItems(chart, function(element) {
5887		if (element.inRange(position.x, position.y)) {
5888			elements.push(element);
5889		}
5890	});
5891
5892	return elements;
5893}
5894
5895/**
5896 * Helper function to get the items nearest to the event position considering all visible items in teh chart
5897 * @param chart {Chart} the chart to look at elements from
5898 * @param position {Point} the point to be nearest to
5899 * @param intersect {Boolean} if true, only consider items that intersect the position
5900 * @param distanceMetric {Function} function to provide the distance between points
5901 * @return {ChartElement[]} the nearest items
5902 */
5903function getNearestItems(chart, position, intersect, distanceMetric) {
5904	var minDistance = Number.POSITIVE_INFINITY;
5905	var nearestItems = [];
5906
5907	parseVisibleItems(chart, function(element) {
5908		if (intersect && !element.inRange(position.x, position.y)) {
5909			return;
5910		}
5911
5912		var center = element.getCenterPoint();
5913		var distance = distanceMetric(position, center);
5914
5915		if (distance < minDistance) {
5916			nearestItems = [element];
5917			minDistance = distance;
5918		} else if (distance === minDistance) {
5919			// Can have multiple items at the same distance in which case we sort by size
5920			nearestItems.push(element);
5921		}
5922	});
5923
5924	return nearestItems;
5925}
5926
5927/**
5928 * Get a distance metric function for two points based on the
5929 * axis mode setting
5930 * @param {String} axis the axis mode. x|y|xy
5931 */
5932function getDistanceMetricForAxis(axis) {
5933	var useX = axis.indexOf('x') !== -1;
5934	var useY = axis.indexOf('y') !== -1;
5935
5936	return function(pt1, pt2) {
5937		var deltaX = useX ? Math.abs(pt1.x - pt2.x) : 0;
5938		var deltaY = useY ? Math.abs(pt1.y - pt2.y) : 0;
5939		return Math.sqrt(Math.pow(deltaX, 2) + Math.pow(deltaY, 2));
5940	};
5941}
5942
5943function indexMode(chart, e, options) {
5944	var position = getRelativePosition(e, chart);
5945	// Default axis for index mode is 'x' to match old behaviour
5946	options.axis = options.axis || 'x';
5947	var distanceMetric = getDistanceMetricForAxis(options.axis);
5948	var items = options.intersect ? getIntersectItems(chart, position) : getNearestItems(chart, position, false, distanceMetric);
5949	var elements = [];
5950
5951	if (!items.length) {
5952		return [];
5953	}
5954
5955	chart.data.datasets.forEach(function(dataset, datasetIndex) {
5956		if (chart.isDatasetVisible(datasetIndex)) {
5957			var meta = chart.getDatasetMeta(datasetIndex);
5958			var element = meta.data[items[0]._index];
5959
5960			// don't count items that are skipped (null data)
5961			if (element && !element._view.skip) {
5962				elements.push(element);
5963			}
5964		}
5965	});
5966
5967	return elements;
5968}
5969
5970/**
5971 * @interface IInteractionOptions
5972 */
5973/**
5974 * If true, only consider items that intersect the point
5975 * @name IInterfaceOptions#boolean
5976 * @type Boolean
5977 */
5978
5979/**
5980 * Contains interaction related functions
5981 * @namespace Chart.Interaction
5982 */
5983module.exports = {
5984	// Helper function for different modes
5985	modes: {
5986		single: function(chart, e) {
5987			var position = getRelativePosition(e, chart);
5988			var elements = [];
5989
5990			parseVisibleItems(chart, function(element) {
5991				if (element.inRange(position.x, position.y)) {
5992					elements.push(element);
5993					return elements;
5994				}
5995			});
5996
5997			return elements.slice(0, 1);
5998		},
5999
6000		/**
6001		 * @function Chart.Interaction.modes.label
6002		 * @deprecated since version 2.4.0
6003		 * @todo remove at version 3
6004		 * @private
6005		 */
6006		label: indexMode,
6007
6008		/**
6009		 * Returns items at the same index. If the options.intersect parameter is true, we only return items if we intersect something
6010		 * If the options.intersect mode is false, we find the nearest item and return the items at the same index as that item
6011		 * @function Chart.Interaction.modes.index
6012		 * @since v2.4.0
6013		 * @param chart {chart} the chart we are returning items from
6014		 * @param e {Event} the event we are find things at
6015		 * @param options {IInteractionOptions} options to use during interaction
6016		 * @return {Chart.Element[]} Array of elements that are under the point. If none are found, an empty array is returned
6017		 */
6018		index: indexMode,
6019
6020		/**
6021		 * Returns items in the same dataset. If the options.intersect parameter is true, we only return items if we intersect something
6022		 * If the options.intersect is false, we find the nearest item and return the items in that dataset
6023		 * @function Chart.Interaction.modes.dataset
6024		 * @param chart {chart} the chart we are returning items from
6025		 * @param e {Event} the event we are find things at
6026		 * @param options {IInteractionOptions} options to use during interaction
6027		 * @return {Chart.Element[]} Array of elements that are under the point. If none are found, an empty array is returned
6028		 */
6029		dataset: function(chart, e, options) {
6030			var position = getRelativePosition(e, chart);
6031			options.axis = options.axis || 'xy';
6032			var distanceMetric = getDistanceMetricForAxis(options.axis);
6033			var items = options.intersect ? getIntersectItems(chart, position) : getNearestItems(chart, position, false, distanceMetric);
6034
6035			if (items.length > 0) {
6036				items = chart.getDatasetMeta(items[0]._datasetIndex).data;
6037			}
6038
6039			return items;
6040		},
6041
6042		/**
6043		 * @function Chart.Interaction.modes.x-axis
6044		 * @deprecated since version 2.4.0. Use index mode and intersect == true
6045		 * @todo remove at version 3
6046		 * @private
6047		 */
6048		'x-axis': function(chart, e) {
6049			return indexMode(chart, e, {intersect: false});
6050		},
6051
6052		/**
6053		 * Point mode returns all elements that hit test based on the event position
6054		 * of the event
6055		 * @function Chart.Interaction.modes.intersect
6056		 * @param chart {chart} the chart we are returning items from
6057		 * @param e {Event} the event we are find things at
6058		 * @return {Chart.Element[]} Array of elements that are under the point. If none are found, an empty array is returned
6059		 */
6060		point: function(chart, e) {
6061			var position = getRelativePosition(e, chart);
6062			return getIntersectItems(chart, position);
6063		},
6064
6065		/**
6066		 * nearest mode returns the element closest to the point
6067		 * @function Chart.Interaction.modes.intersect
6068		 * @param chart {chart} the chart we are returning items from
6069		 * @param e {Event} the event we are find things at
6070		 * @param options {IInteractionOptions} options to use
6071		 * @return {Chart.Element[]} Array of elements that are under the point. If none are found, an empty array is returned
6072		 */
6073		nearest: function(chart, e, options) {
6074			var position = getRelativePosition(e, chart);
6075			options.axis = options.axis || 'xy';
6076			var distanceMetric = getDistanceMetricForAxis(options.axis);
6077			var nearestItems = getNearestItems(chart, position, options.intersect, distanceMetric);
6078
6079			// We have multiple items at the same distance from the event. Now sort by smallest
6080			if (nearestItems.length > 1) {
6081				nearestItems.sort(function(a, b) {
6082					var sizeA = a.getArea();
6083					var sizeB = b.getArea();
6084					var ret = sizeA - sizeB;
6085
6086					if (ret === 0) {
6087						// if equal sort by dataset index
6088						ret = a._datasetIndex - b._datasetIndex;
6089					}
6090
6091					return ret;
6092				});
6093			}
6094
6095			// Return only 1 item
6096			return nearestItems.slice(0, 1);
6097		},
6098
6099		/**
6100		 * x mode returns the elements that hit-test at the current x coordinate
6101		 * @function Chart.Interaction.modes.x
6102		 * @param chart {chart} the chart we are returning items from
6103		 * @param e {Event} the event we are find things at
6104		 * @param options {IInteractionOptions} options to use
6105		 * @return {Chart.Element[]} Array of elements that are under the point. If none are found, an empty array is returned
6106		 */
6107		x: function(chart, e, options) {
6108			var position = getRelativePosition(e, chart);
6109			var items = [];
6110			var intersectsItem = false;
6111
6112			parseVisibleItems(chart, function(element) {
6113				if (element.inXRange(position.x)) {
6114					items.push(element);
6115				}
6116
6117				if (element.inRange(position.x, position.y)) {
6118					intersectsItem = true;
6119				}
6120			});
6121
6122			// If we want to trigger on an intersect and we don't have any items
6123			// that intersect the position, return nothing
6124			if (options.intersect && !intersectsItem) {
6125				items = [];
6126			}
6127			return items;
6128		},
6129
6130		/**
6131		 * y mode returns the elements that hit-test at the current y coordinate
6132		 * @function Chart.Interaction.modes.y
6133		 * @param chart {chart} the chart we are returning items from
6134		 * @param e {Event} the event we are find things at
6135		 * @param options {IInteractionOptions} options to use
6136		 * @return {Chart.Element[]} Array of elements that are under the point. If none are found, an empty array is returned
6137		 */
6138		y: function(chart, e, options) {
6139			var position = getRelativePosition(e, chart);
6140			var items = [];
6141			var intersectsItem = false;
6142
6143			parseVisibleItems(chart, function(element) {
6144				if (element.inYRange(position.y)) {
6145					items.push(element);
6146				}
6147
6148				if (element.inRange(position.x, position.y)) {
6149					intersectsItem = true;
6150				}
6151			});
6152
6153			// If we want to trigger on an intersect and we don't have any items
6154			// that intersect the position, return nothing
6155			if (options.intersect && !intersectsItem) {
6156				items = [];
6157			}
6158			return items;
6159		}
6160	}
6161};
6162
6163},{"45":45}],29:[function(require,module,exports){
6164'use strict';
6165
6166var defaults = require(25);
6167
6168defaults._set('global', {
6169	responsive: true,
6170	responsiveAnimationDuration: 0,
6171	maintainAspectRatio: true,
6172	events: ['mousemove', 'mouseout', 'click', 'touchstart', 'touchmove'],
6173	hover: {
6174		onHover: null,
6175		mode: 'nearest',
6176		intersect: true,
6177		animationDuration: 400
6178	},
6179	onClick: null,
6180	defaultColor: 'rgba(0,0,0,0.1)',
6181	defaultFontColor: '#666',
6182	defaultFontFamily: "'Helvetica Neue', 'Helvetica', 'Arial', sans-serif",
6183	defaultFontSize: 12,
6184	defaultFontStyle: 'normal',
6185	showLines: true,
6186
6187	// Element defaults defined in element extensions
6188	elements: {},
6189
6190	// Layout options such as padding
6191	layout: {
6192		padding: {
6193			top: 0,
6194			right: 0,
6195			bottom: 0,
6196			left: 0
6197		}
6198	}
6199});
6200
6201module.exports = function() {
6202
6203	// Occupy the global variable of Chart, and create a simple base class
6204	var Chart = function(item, config) {
6205		this.construct(item, config);
6206		return this;
6207	};
6208
6209	Chart.Chart = Chart;
6210
6211	return Chart;
6212};
6213
6214},{"25":25}],30:[function(require,module,exports){
6215'use strict';
6216
6217var helpers = require(45);
6218
6219function filterByPosition(array, position) {
6220	return helpers.where(array, function(v) {
6221		return v.position === position;
6222	});
6223}
6224
6225function sortByWeight(array, reverse) {
6226	array.forEach(function(v, i) {
6227		v._tmpIndex_ = i;
6228		return v;
6229	});
6230	array.sort(function(a, b) {
6231		var v0 = reverse ? b : a;
6232		var v1 = reverse ? a : b;
6233		return v0.weight === v1.weight ?
6234			v0._tmpIndex_ - v1._tmpIndex_ :
6235			v0.weight - v1.weight;
6236	});
6237	array.forEach(function(v) {
6238		delete v._tmpIndex_;
6239	});
6240}
6241
6242/**
6243 * @interface ILayoutItem
6244 * @prop {String} position - The position of the item in the chart layout. Possible values are
6245 * 'left', 'top', 'right', 'bottom', and 'chartArea'
6246 * @prop {Number} weight - The weight used to sort the item. Higher weights are further away from the chart area
6247 * @prop {Boolean} fullWidth - if true, and the item is horizontal, then push vertical boxes down
6248 * @prop {Function} isHorizontal - returns true if the layout item is horizontal (ie. top or bottom)
6249 * @prop {Function} update - Takes two parameters: width and height. Returns size of item
6250 * @prop {Function} getPadding -  Returns an object with padding on the edges
6251 * @prop {Number} width - Width of item. Must be valid after update()
6252 * @prop {Number} height - Height of item. Must be valid after update()
6253 * @prop {Number} left - Left edge of the item. Set by layout system and cannot be used in update
6254 * @prop {Number} top - Top edge of the item. Set by layout system and cannot be used in update
6255 * @prop {Number} right - Right edge of the item. Set by layout system and cannot be used in update
6256 * @prop {Number} bottom - Bottom edge of the item. Set by layout system and cannot be used in update
6257 */
6258
6259// The layout service is very self explanatory.  It's responsible for the layout within a chart.
6260// Scales, Legends and Plugins all rely on the layout service and can easily register to be placed anywhere they need
6261// It is this service's responsibility of carrying out that layout.
6262module.exports = {
6263	defaults: {},
6264
6265	/**
6266	 * Register a box to a chart.
6267	 * A box is simply a reference to an object that requires layout. eg. Scales, Legend, Title.
6268	 * @param {Chart} chart - the chart to use
6269	 * @param {ILayoutItem} item - the item to add to be layed out
6270	 */
6271	addBox: function(chart, item) {
6272		if (!chart.boxes) {
6273			chart.boxes = [];
6274		}
6275
6276		// initialize item with default values
6277		item.fullWidth = item.fullWidth || false;
6278		item.position = item.position || 'top';
6279		item.weight = item.weight || 0;
6280
6281		chart.boxes.push(item);
6282	},
6283
6284	/**
6285	 * Remove a layoutItem from a chart
6286	 * @param {Chart} chart - the chart to remove the box from
6287	 * @param {Object} layoutItem - the item to remove from the layout
6288	 */
6289	removeBox: function(chart, layoutItem) {
6290		var index = chart.boxes ? chart.boxes.indexOf(layoutItem) : -1;
6291		if (index !== -1) {
6292			chart.boxes.splice(index, 1);
6293		}
6294	},
6295
6296	/**
6297	 * Sets (or updates) options on the given `item`.
6298	 * @param {Chart} chart - the chart in which the item lives (or will be added to)
6299	 * @param {Object} item - the item to configure with the given options
6300	 * @param {Object} options - the new item options.
6301	 */
6302	configure: function(chart, item, options) {
6303		var props = ['fullWidth', 'position', 'weight'];
6304		var ilen = props.length;
6305		var i = 0;
6306		var prop;
6307
6308		for (; i < ilen; ++i) {
6309			prop = props[i];
6310			if (options.hasOwnProperty(prop)) {
6311				item[prop] = options[prop];
6312			}
6313		}
6314	},
6315
6316	/**
6317	 * Fits boxes of the given chart into the given size by having each box measure itself
6318	 * then running a fitting algorithm
6319	 * @param {Chart} chart - the chart
6320	 * @param {Number} width - the width to fit into
6321	 * @param {Number} height - the height to fit into
6322	 */
6323	update: function(chart, width, height) {
6324		if (!chart) {
6325			return;
6326		}
6327
6328		var layoutOptions = chart.options.layout || {};
6329		var padding = helpers.options.toPadding(layoutOptions.padding);
6330		var leftPadding = padding.left;
6331		var rightPadding = padding.right;
6332		var topPadding = padding.top;
6333		var bottomPadding = padding.bottom;
6334
6335		var leftBoxes = filterByPosition(chart.boxes, 'left');
6336		var rightBoxes = filterByPosition(chart.boxes, 'right');
6337		var topBoxes = filterByPosition(chart.boxes, 'top');
6338		var bottomBoxes = filterByPosition(chart.boxes, 'bottom');
6339		var chartAreaBoxes = filterByPosition(chart.boxes, 'chartArea');
6340
6341		// Sort boxes by weight. A higher weight is further away from the chart area
6342		sortByWeight(leftBoxes, true);
6343		sortByWeight(rightBoxes, false);
6344		sortByWeight(topBoxes, true);
6345		sortByWeight(bottomBoxes, false);
6346
6347		// Essentially we now have any number of boxes on each of the 4 sides.
6348		// Our canvas looks like the following.
6349		// The areas L1 and L2 are the left axes. R1 is the right axis, T1 is the top axis and
6350		// B1 is the bottom axis
6351		// There are also 4 quadrant-like locations (left to right instead of clockwise) reserved for chart overlays
6352		// These locations are single-box locations only, when trying to register a chartArea location that is already taken,
6353		// an error will be thrown.
6354		//
6355		// |----------------------------------------------------|
6356		// |                  T1 (Full Width)                   |
6357		// |----------------------------------------------------|
6358		// |    |    |                 T2                  |    |
6359		// |    |----|-------------------------------------|----|
6360		// |    |    | C1 |                           | C2 |    |
6361		// |    |    |----|                           |----|    |
6362		// |    |    |                                     |    |
6363		// | L1 | L2 |           ChartArea (C0)            | R1 |
6364		// |    |    |                                     |    |
6365		// |    |    |----|                           |----|    |
6366		// |    |    | C3 |                           | C4 |    |
6367		// |    |----|-------------------------------------|----|
6368		// |    |    |                 B1                  |    |
6369		// |----------------------------------------------------|
6370		// |                  B2 (Full Width)                   |
6371		// |----------------------------------------------------|
6372		//
6373		// What we do to find the best sizing, we do the following
6374		// 1. Determine the minimum size of the chart area.
6375		// 2. Split the remaining width equally between each vertical axis
6376		// 3. Split the remaining height equally between each horizontal axis
6377		// 4. Give each layout the maximum size it can be. The layout will return it's minimum size
6378		// 5. Adjust the sizes of each axis based on it's minimum reported size.
6379		// 6. Refit each axis
6380		// 7. Position each axis in the final location
6381		// 8. Tell the chart the final location of the chart area
6382		// 9. Tell any axes that overlay the chart area the positions of the chart area
6383
6384		// Step 1
6385		var chartWidth = width - leftPadding - rightPadding;
6386		var chartHeight = height - topPadding - bottomPadding;
6387		var chartAreaWidth = chartWidth / 2; // min 50%
6388		var chartAreaHeight = chartHeight / 2; // min 50%
6389
6390		// Step 2
6391		var verticalBoxWidth = (width - chartAreaWidth) / (leftBoxes.length + rightBoxes.length);
6392
6393		// Step 3
6394		var horizontalBoxHeight = (height - chartAreaHeight) / (topBoxes.length + bottomBoxes.length);
6395
6396		// Step 4
6397		var maxChartAreaWidth = chartWidth;
6398		var maxChartAreaHeight = chartHeight;
6399		var minBoxSizes = [];
6400
6401		function getMinimumBoxSize(box) {
6402			var minSize;
6403			var isHorizontal = box.isHorizontal();
6404
6405			if (isHorizontal) {
6406				minSize = box.update(box.fullWidth ? chartWidth : maxChartAreaWidth, horizontalBoxHeight);
6407				maxChartAreaHeight -= minSize.height;
6408			} else {
6409				minSize = box.update(verticalBoxWidth, maxChartAreaHeight);
6410				maxChartAreaWidth -= minSize.width;
6411			}
6412
6413			minBoxSizes.push({
6414				horizontal: isHorizontal,
6415				minSize: minSize,
6416				box: box,
6417			});
6418		}
6419
6420		helpers.each(leftBoxes.concat(rightBoxes, topBoxes, bottomBoxes), getMinimumBoxSize);
6421
6422		// If a horizontal box has padding, we move the left boxes over to avoid ugly charts (see issue #2478)
6423		var maxHorizontalLeftPadding = 0;
6424		var maxHorizontalRightPadding = 0;
6425		var maxVerticalTopPadding = 0;
6426		var maxVerticalBottomPadding = 0;
6427
6428		helpers.each(topBoxes.concat(bottomBoxes), function(horizontalBox) {
6429			if (horizontalBox.getPadding) {
6430				var boxPadding = horizontalBox.getPadding();
6431				maxHorizontalLeftPadding = Math.max(maxHorizontalLeftPadding, boxPadding.left);
6432				maxHorizontalRightPadding = Math.max(maxHorizontalRightPadding, boxPadding.right);
6433			}
6434		});
6435
6436		helpers.each(leftBoxes.concat(rightBoxes), function(verticalBox) {
6437			if (verticalBox.getPadding) {
6438				var boxPadding = verticalBox.getPadding();
6439				maxVerticalTopPadding = Math.max(maxVerticalTopPadding, boxPadding.top);
6440				maxVerticalBottomPadding = Math.max(maxVerticalBottomPadding, boxPadding.bottom);
6441			}
6442		});
6443
6444		// At this point, maxChartAreaHeight and maxChartAreaWidth are the size the chart area could
6445		// be if the axes are drawn at their minimum sizes.
6446		// Steps 5 & 6
6447		var totalLeftBoxesWidth = leftPadding;
6448		var totalRightBoxesWidth = rightPadding;
6449		var totalTopBoxesHeight = topPadding;
6450		var totalBottomBoxesHeight = bottomPadding;
6451
6452		// Function to fit a box
6453		function fitBox(box) {
6454			var minBoxSize = helpers.findNextWhere(minBoxSizes, function(minBox) {
6455				return minBox.box === box;
6456			});
6457
6458			if (minBoxSize) {
6459				if (box.isHorizontal()) {
6460					var scaleMargin = {
6461						left: Math.max(totalLeftBoxesWidth, maxHorizontalLeftPadding),
6462						right: Math.max(totalRightBoxesWidth, maxHorizontalRightPadding),
6463						top: 0,
6464						bottom: 0
6465					};
6466
6467					// Don't use min size here because of label rotation. When the labels are rotated, their rotation highly depends
6468					// on the margin. Sometimes they need to increase in size slightly
6469					box.update(box.fullWidth ? chartWidth : maxChartAreaWidth, chartHeight / 2, scaleMargin);
6470				} else {
6471					box.update(minBoxSize.minSize.width, maxChartAreaHeight);
6472				}
6473			}
6474		}
6475
6476		// Update, and calculate the left and right margins for the horizontal boxes
6477		helpers.each(leftBoxes.concat(rightBoxes), fitBox);
6478
6479		helpers.each(leftBoxes, function(box) {
6480			totalLeftBoxesWidth += box.width;
6481		});
6482
6483		helpers.each(rightBoxes, function(box) {
6484			totalRightBoxesWidth += box.width;
6485		});
6486
6487		// Set the Left and Right margins for the horizontal boxes
6488		helpers.each(topBoxes.concat(bottomBoxes), fitBox);
6489
6490		// Figure out how much margin is on the top and bottom of the vertical boxes
6491		helpers.each(topBoxes, function(box) {
6492			totalTopBoxesHeight += box.height;
6493		});
6494
6495		helpers.each(bottomBoxes, function(box) {
6496			totalBottomBoxesHeight += box.height;
6497		});
6498
6499		function finalFitVerticalBox(box) {
6500			var minBoxSize = helpers.findNextWhere(minBoxSizes, function(minSize) {
6501				return minSize.box === box;
6502			});
6503
6504			var scaleMargin = {
6505				left: 0,
6506				right: 0,
6507				top: totalTopBoxesHeight,
6508				bottom: totalBottomBoxesHeight
6509			};
6510
6511			if (minBoxSize) {
6512				box.update(minBoxSize.minSize.width, maxChartAreaHeight, scaleMargin);
6513			}
6514		}
6515
6516		// Let the left layout know the final margin
6517		helpers.each(leftBoxes.concat(rightBoxes), finalFitVerticalBox);
6518
6519		// Recalculate because the size of each layout might have changed slightly due to the margins (label rotation for instance)
6520		totalLeftBoxesWidth = leftPadding;
6521		totalRightBoxesWidth = rightPadding;
6522		totalTopBoxesHeight = topPadding;
6523		totalBottomBoxesHeight = bottomPadding;
6524
6525		helpers.each(leftBoxes, function(box) {
6526			totalLeftBoxesWidth += box.width;
6527		});
6528
6529		helpers.each(rightBoxes, function(box) {
6530			totalRightBoxesWidth += box.width;
6531		});
6532
6533		helpers.each(topBoxes, function(box) {
6534			totalTopBoxesHeight += box.height;
6535		});
6536		helpers.each(bottomBoxes, function(box) {
6537			totalBottomBoxesHeight += box.height;
6538		});
6539
6540		// We may be adding some padding to account for rotated x axis labels
6541		var leftPaddingAddition = Math.max(maxHorizontalLeftPadding - totalLeftBoxesWidth, 0);
6542		totalLeftBoxesWidth += leftPaddingAddition;
6543		totalRightBoxesWidth += Math.max(maxHorizontalRightPadding - totalRightBoxesWidth, 0);
6544
6545		var topPaddingAddition = Math.max(maxVerticalTopPadding - totalTopBoxesHeight, 0);
6546		totalTopBoxesHeight += topPaddingAddition;
6547		totalBottomBoxesHeight += Math.max(maxVerticalBottomPadding - totalBottomBoxesHeight, 0);
6548
6549		// Figure out if our chart area changed. This would occur if the dataset layout label rotation
6550		// changed due to the application of the margins in step 6. Since we can only get bigger, this is safe to do
6551		// without calling `fit` again
6552		var newMaxChartAreaHeight = height - totalTopBoxesHeight - totalBottomBoxesHeight;
6553		var newMaxChartAreaWidth = width - totalLeftBoxesWidth - totalRightBoxesWidth;
6554
6555		if (newMaxChartAreaWidth !== maxChartAreaWidth || newMaxChartAreaHeight !== maxChartAreaHeight) {
6556			helpers.each(leftBoxes, function(box) {
6557				box.height = newMaxChartAreaHeight;
6558			});
6559
6560			helpers.each(rightBoxes, function(box) {
6561				box.height = newMaxChartAreaHeight;
6562			});
6563
6564			helpers.each(topBoxes, function(box) {
6565				if (!box.fullWidth) {
6566					box.width = newMaxChartAreaWidth;
6567				}
6568			});
6569
6570			helpers.each(bottomBoxes, function(box) {
6571				if (!box.fullWidth) {
6572					box.width = newMaxChartAreaWidth;
6573				}
6574			});
6575
6576			maxChartAreaHeight = newMaxChartAreaHeight;
6577			maxChartAreaWidth = newMaxChartAreaWidth;
6578		}
6579
6580		// Step 7 - Position the boxes
6581		var left = leftPadding + leftPaddingAddition;
6582		var top = topPadding + topPaddingAddition;
6583
6584		function placeBox(box) {
6585			if (box.isHorizontal()) {
6586				box.left = box.fullWidth ? leftPadding : totalLeftBoxesWidth;
6587				box.right = box.fullWidth ? width - rightPadding : totalLeftBoxesWidth + maxChartAreaWidth;
6588				box.top = top;
6589				box.bottom = top + box.height;
6590
6591				// Move to next point
6592				top = box.bottom;
6593
6594			} else {
6595
6596				box.left = left;
6597				box.right = left + box.width;
6598				box.top = totalTopBoxesHeight;
6599				box.bottom = totalTopBoxesHeight + maxChartAreaHeight;
6600
6601				// Move to next point
6602				left = box.right;
6603			}
6604		}
6605
6606		helpers.each(leftBoxes.concat(topBoxes), placeBox);
6607
6608		// Account for chart width and height
6609		left += maxChartAreaWidth;
6610		top += maxChartAreaHeight;
6611
6612		helpers.each(rightBoxes, placeBox);
6613		helpers.each(bottomBoxes, placeBox);
6614
6615		// Step 8
6616		chart.chartArea = {
6617			left: totalLeftBoxesWidth,
6618			top: totalTopBoxesHeight,
6619			right: totalLeftBoxesWidth + maxChartAreaWidth,
6620			bottom: totalTopBoxesHeight + maxChartAreaHeight
6621		};
6622
6623		// Step 9
6624		helpers.each(chartAreaBoxes, function(box) {
6625			box.left = chart.chartArea.left;
6626			box.top = chart.chartArea.top;
6627			box.right = chart.chartArea.right;
6628			box.bottom = chart.chartArea.bottom;
6629
6630			box.update(maxChartAreaWidth, maxChartAreaHeight);
6631		});
6632	}
6633};
6634
6635},{"45":45}],31:[function(require,module,exports){
6636'use strict';
6637
6638var defaults = require(25);
6639var helpers = require(45);
6640
6641defaults._set('global', {
6642	plugins: {}
6643});
6644
6645/**
6646 * The plugin service singleton
6647 * @namespace Chart.plugins
6648 * @since 2.1.0
6649 */
6650module.exports = {
6651	/**
6652	 * Globally registered plugins.
6653	 * @private
6654	 */
6655	_plugins: [],
6656
6657	/**
6658	 * This identifier is used to invalidate the descriptors cache attached to each chart
6659	 * when a global plugin is registered or unregistered. In this case, the cache ID is
6660	 * incremented and descriptors are regenerated during following API calls.
6661	 * @private
6662	 */
6663	_cacheId: 0,
6664
6665	/**
6666	 * Registers the given plugin(s) if not already registered.
6667	 * @param {Array|Object} plugins plugin instance(s).
6668	 */
6669	register: function(plugins) {
6670		var p = this._plugins;
6671		([]).concat(plugins).forEach(function(plugin) {
6672			if (p.indexOf(plugin) === -1) {
6673				p.push(plugin);
6674			}
6675		});
6676
6677		this._cacheId++;
6678	},
6679
6680	/**
6681	 * Unregisters the given plugin(s) only if registered.
6682	 * @param {Array|Object} plugins plugin instance(s).
6683	 */
6684	unregister: function(plugins) {
6685		var p = this._plugins;
6686		([]).concat(plugins).forEach(function(plugin) {
6687			var idx = p.indexOf(plugin);
6688			if (idx !== -1) {
6689				p.splice(idx, 1);
6690			}
6691		});
6692
6693		this._cacheId++;
6694	},
6695
6696	/**
6697	 * Remove all registered plugins.
6698	 * @since 2.1.5
6699	 */
6700	clear: function() {
6701		this._plugins = [];
6702		this._cacheId++;
6703	},
6704
6705	/**
6706	 * Returns the number of registered plugins?
6707	 * @returns {Number}
6708	 * @since 2.1.5
6709	 */
6710	count: function() {
6711		return this._plugins.length;
6712	},
6713
6714	/**
6715	 * Returns all registered plugin instances.
6716	 * @returns {Array} array of plugin objects.
6717	 * @since 2.1.5
6718	 */
6719	getAll: function() {
6720		return this._plugins;
6721	},
6722
6723	/**
6724	 * Calls enabled plugins for `chart` on the specified hook and with the given args.
6725	 * This method immediately returns as soon as a plugin explicitly returns false. The
6726	 * returned value can be used, for instance, to interrupt the current action.
6727	 * @param {Object} chart - The chart instance for which plugins should be called.
6728	 * @param {String} hook - The name of the plugin method to call (e.g. 'beforeUpdate').
6729	 * @param {Array} [args] - Extra arguments to apply to the hook call.
6730	 * @returns {Boolean} false if any of the plugins return false, else returns true.
6731	 */
6732	notify: function(chart, hook, args) {
6733		var descriptors = this.descriptors(chart);
6734		var ilen = descriptors.length;
6735		var i, descriptor, plugin, params, method;
6736
6737		for (i = 0; i < ilen; ++i) {
6738			descriptor = descriptors[i];
6739			plugin = descriptor.plugin;
6740			method = plugin[hook];
6741			if (typeof method === 'function') {
6742				params = [chart].concat(args || []);
6743				params.push(descriptor.options);
6744				if (method.apply(plugin, params) === false) {
6745					return false;
6746				}
6747			}
6748		}
6749
6750		return true;
6751	},
6752
6753	/**
6754	 * Returns descriptors of enabled plugins for the given chart.
6755	 * @returns {Array} [{ plugin, options }]
6756	 * @private
6757	 */
6758	descriptors: function(chart) {
6759		var cache = chart._plugins || (chart._plugins = {});
6760		if (cache.id === this._cacheId) {
6761			return cache.descriptors;
6762		}
6763
6764		var plugins = [];
6765		var descriptors = [];
6766		var config = (chart && chart.config) || {};
6767		var options = (config.options && config.options.plugins) || {};
6768
6769		this._plugins.concat(config.plugins || []).forEach(function(plugin) {
6770			var idx = plugins.indexOf(plugin);
6771			if (idx !== -1) {
6772				return;
6773			}
6774
6775			var id = plugin.id;
6776			var opts = options[id];
6777			if (opts === false) {
6778				return;
6779			}
6780
6781			if (opts === true) {
6782				opts = helpers.clone(defaults.global.plugins[id]);
6783			}
6784
6785			plugins.push(plugin);
6786			descriptors.push({
6787				plugin: plugin,
6788				options: opts || {}
6789			});
6790		});
6791
6792		cache.descriptors = descriptors;
6793		cache.id = this._cacheId;
6794		return descriptors;
6795	}
6796};
6797
6798/**
6799 * Plugin extension hooks.
6800 * @interface IPlugin
6801 * @since 2.1.0
6802 */
6803/**
6804 * @method IPlugin#beforeInit
6805 * @desc Called before initializing `chart`.
6806 * @param {Chart.Controller} chart - The chart instance.
6807 * @param {Object} options - The plugin options.
6808 */
6809/**
6810 * @method IPlugin#afterInit
6811 * @desc Called after `chart` has been initialized and before the first update.
6812 * @param {Chart.Controller} chart - The chart instance.
6813 * @param {Object} options - The plugin options.
6814 */
6815/**
6816 * @method IPlugin#beforeUpdate
6817 * @desc Called before updating `chart`. If any plugin returns `false`, the update
6818 * is cancelled (and thus subsequent render(s)) until another `update` is triggered.
6819 * @param {Chart.Controller} chart - The chart instance.
6820 * @param {Object} options - The plugin options.
6821 * @returns {Boolean} `false` to cancel the chart update.
6822 */
6823/**
6824 * @method IPlugin#afterUpdate
6825 * @desc Called after `chart` has been updated and before rendering. Note that this
6826 * hook will not be called if the chart update has been previously cancelled.
6827 * @param {Chart.Controller} chart - The chart instance.
6828 * @param {Object} options - The plugin options.
6829 */
6830/**
6831 * @method IPlugin#beforeDatasetsUpdate
6832 * @desc Called before updating the `chart` datasets. If any plugin returns `false`,
6833 * the datasets update is cancelled until another `update` is triggered.
6834 * @param {Chart.Controller} chart - The chart instance.
6835 * @param {Object} options - The plugin options.
6836 * @returns {Boolean} false to cancel the datasets update.
6837 * @since version 2.1.5
6838*/
6839/**
6840 * @method IPlugin#afterDatasetsUpdate
6841 * @desc Called after the `chart` datasets have been updated. Note that this hook
6842 * will not be called if the datasets update has been previously cancelled.
6843 * @param {Chart.Controller} chart - The chart instance.
6844 * @param {Object} options - The plugin options.
6845 * @since version 2.1.5
6846 */
6847/**
6848 * @method IPlugin#beforeDatasetUpdate
6849 * @desc Called before updating the `chart` dataset at the given `args.index`. If any plugin
6850 * returns `false`, the datasets update is cancelled until another `update` is triggered.
6851 * @param {Chart} chart - The chart instance.
6852 * @param {Object} args - The call arguments.
6853 * @param {Number} args.index - The dataset index.
6854 * @param {Object} args.meta - The dataset metadata.
6855 * @param {Object} options - The plugin options.
6856 * @returns {Boolean} `false` to cancel the chart datasets drawing.
6857 */
6858/**
6859 * @method IPlugin#afterDatasetUpdate
6860 * @desc Called after the `chart` datasets at the given `args.index` has been updated. Note
6861 * that this hook will not be called if the datasets update has been previously cancelled.
6862 * @param {Chart} chart - The chart instance.
6863 * @param {Object} args - The call arguments.
6864 * @param {Number} args.index - The dataset index.
6865 * @param {Object} args.meta - The dataset metadata.
6866 * @param {Object} options - The plugin options.
6867 */
6868/**
6869 * @method IPlugin#beforeLayout
6870 * @desc Called before laying out `chart`. If any plugin returns `false`,
6871 * the layout update is cancelled until another `update` is triggered.
6872 * @param {Chart.Controller} chart - The chart instance.
6873 * @param {Object} options - The plugin options.
6874 * @returns {Boolean} `false` to cancel the chart layout.
6875 */
6876/**
6877 * @method IPlugin#afterLayout
6878 * @desc Called after the `chart` has been layed out. Note that this hook will not
6879 * be called if the layout update has been previously cancelled.
6880 * @param {Chart.Controller} chart - The chart instance.
6881 * @param {Object} options - The plugin options.
6882 */
6883/**
6884 * @method IPlugin#beforeRender
6885 * @desc Called before rendering `chart`. If any plugin returns `false`,
6886 * the rendering is cancelled until another `render` is triggered.
6887 * @param {Chart.Controller} chart - The chart instance.
6888 * @param {Object} options - The plugin options.
6889 * @returns {Boolean} `false` to cancel the chart rendering.
6890 */
6891/**
6892 * @method IPlugin#afterRender
6893 * @desc Called after the `chart` has been fully rendered (and animation completed). Note
6894 * that this hook will not be called if the rendering has been previously cancelled.
6895 * @param {Chart.Controller} chart - The chart instance.
6896 * @param {Object} options - The plugin options.
6897 */
6898/**
6899 * @method IPlugin#beforeDraw
6900 * @desc Called before drawing `chart` at every animation frame specified by the given
6901 * easing value. If any plugin returns `false`, the frame drawing is cancelled until
6902 * another `render` is triggered.
6903 * @param {Chart.Controller} chart - The chart instance.
6904 * @param {Number} easingValue - The current animation value, between 0.0 and 1.0.
6905 * @param {Object} options - The plugin options.
6906 * @returns {Boolean} `false` to cancel the chart drawing.
6907 */
6908/**
6909 * @method IPlugin#afterDraw
6910 * @desc Called after the `chart` has been drawn for the specific easing value. Note
6911 * that this hook will not be called if the drawing has been previously cancelled.
6912 * @param {Chart.Controller} chart - The chart instance.
6913 * @param {Number} easingValue - The current animation value, between 0.0 and 1.0.
6914 * @param {Object} options - The plugin options.
6915 */
6916/**
6917 * @method IPlugin#beforeDatasetsDraw
6918 * @desc Called before drawing the `chart` datasets. If any plugin returns `false`,
6919 * the datasets drawing is cancelled until another `render` is triggered.
6920 * @param {Chart.Controller} chart - The chart instance.
6921 * @param {Number} easingValue - The current animation value, between 0.0 and 1.0.
6922 * @param {Object} options - The plugin options.
6923 * @returns {Boolean} `false` to cancel the chart datasets drawing.
6924 */
6925/**
6926 * @method IPlugin#afterDatasetsDraw
6927 * @desc Called after the `chart` datasets have been drawn. Note that this hook
6928 * will not be called if the datasets drawing has been previously cancelled.
6929 * @param {Chart.Controller} chart - The chart instance.
6930 * @param {Number} easingValue - The current animation value, between 0.0 and 1.0.
6931 * @param {Object} options - The plugin options.
6932 */
6933/**
6934 * @method IPlugin#beforeDatasetDraw
6935 * @desc Called before drawing the `chart` dataset at the given `args.index` (datasets
6936 * are drawn in the reverse order). If any plugin returns `false`, the datasets drawing
6937 * is cancelled until another `render` is triggered.
6938 * @param {Chart} chart - The chart instance.
6939 * @param {Object} args - The call arguments.
6940 * @param {Number} args.index - The dataset index.
6941 * @param {Object} args.meta - The dataset metadata.
6942 * @param {Number} args.easingValue - The current animation value, between 0.0 and 1.0.
6943 * @param {Object} options - The plugin options.
6944 * @returns {Boolean} `false` to cancel the chart datasets drawing.
6945 */
6946/**
6947 * @method IPlugin#afterDatasetDraw
6948 * @desc Called after the `chart` datasets at the given `args.index` have been drawn
6949 * (datasets are drawn in the reverse order). Note that this hook will not be called
6950 * if the datasets drawing has been previously cancelled.
6951 * @param {Chart} chart - The chart instance.
6952 * @param {Object} args - The call arguments.
6953 * @param {Number} args.index - The dataset index.
6954 * @param {Object} args.meta - The dataset metadata.
6955 * @param {Number} args.easingValue - The current animation value, between 0.0 and 1.0.
6956 * @param {Object} options - The plugin options.
6957 */
6958/**
6959 * @method IPlugin#beforeTooltipDraw
6960 * @desc Called before drawing the `tooltip`. If any plugin returns `false`,
6961 * the tooltip drawing is cancelled until another `render` is triggered.
6962 * @param {Chart} chart - The chart instance.
6963 * @param {Object} args - The call arguments.
6964 * @param {Object} args.tooltip - The tooltip.
6965 * @param {Number} args.easingValue - The current animation value, between 0.0 and 1.0.
6966 * @param {Object} options - The plugin options.
6967 * @returns {Boolean} `false` to cancel the chart tooltip drawing.
6968 */
6969/**
6970 * @method IPlugin#afterTooltipDraw
6971 * @desc Called after drawing the `tooltip`. Note that this hook will not
6972 * be called if the tooltip drawing has been previously cancelled.
6973 * @param {Chart} chart - The chart instance.
6974 * @param {Object} args - The call arguments.
6975 * @param {Object} args.tooltip - The tooltip.
6976 * @param {Number} args.easingValue - The current animation value, between 0.0 and 1.0.
6977 * @param {Object} options - The plugin options.
6978 */
6979/**
6980 * @method IPlugin#beforeEvent
6981 * @desc Called before processing the specified `event`. If any plugin returns `false`,
6982 * the event will be discarded.
6983 * @param {Chart.Controller} chart - The chart instance.
6984 * @param {IEvent} event - The event object.
6985 * @param {Object} options - The plugin options.
6986 */
6987/**
6988 * @method IPlugin#afterEvent
6989 * @desc Called after the `event` has been consumed. Note that this hook
6990 * will not be called if the `event` has been previously discarded.
6991 * @param {Chart.Controller} chart - The chart instance.
6992 * @param {IEvent} event - The event object.
6993 * @param {Object} options - The plugin options.
6994 */
6995/**
6996 * @method IPlugin#resize
6997 * @desc Called after the chart as been resized.
6998 * @param {Chart.Controller} chart - The chart instance.
6999 * @param {Number} size - The new canvas display size (eq. canvas.style width & height).
7000 * @param {Object} options - The plugin options.
7001 */
7002/**
7003 * @method IPlugin#destroy
7004 * @desc Called after the chart as been destroyed.
7005 * @param {Chart.Controller} chart - The chart instance.
7006 * @param {Object} options - The plugin options.
7007 */
7008
7009},{"25":25,"45":45}],32:[function(require,module,exports){
7010'use strict';
7011
7012var defaults = require(25);
7013var Element = require(26);
7014var helpers = require(45);
7015var Ticks = require(34);
7016
7017defaults._set('scale', {
7018	display: true,
7019	position: 'left',
7020	offset: false,
7021
7022	// grid line settings
7023	gridLines: {
7024		display: true,
7025		color: 'rgba(0, 0, 0, 0.1)',
7026		lineWidth: 1,
7027		drawBorder: true,
7028		drawOnChartArea: true,
7029		drawTicks: true,
7030		tickMarkLength: 10,
7031		zeroLineWidth: 1,
7032		zeroLineColor: 'rgba(0,0,0,0.25)',
7033		zeroLineBorderDash: [],
7034		zeroLineBorderDashOffset: 0.0,
7035		offsetGridLines: false,
7036		borderDash: [],
7037		borderDashOffset: 0.0
7038	},
7039
7040	// scale label
7041	scaleLabel: {
7042		// display property
7043		display: false,
7044
7045		// actual label
7046		labelString: '',
7047
7048		// line height
7049		lineHeight: 1.2,
7050
7051		// top/bottom padding
7052		padding: {
7053			top: 4,
7054			bottom: 4
7055		}
7056	},
7057
7058	// label settings
7059	ticks: {
7060		beginAtZero: false,
7061		minRotation: 0,
7062		maxRotation: 50,
7063		mirror: false,
7064		padding: 0,
7065		reverse: false,
7066		display: true,
7067		autoSkip: true,
7068		autoSkipPadding: 0,
7069		labelOffset: 0,
7070		// We pass through arrays to be rendered as multiline labels, we convert Others to strings here.
7071		callback: Ticks.formatters.values,
7072		minor: {},
7073		major: {}
7074	}
7075});
7076
7077function labelsFromTicks(ticks) {
7078	var labels = [];
7079	var i, ilen;
7080
7081	for (i = 0, ilen = ticks.length; i < ilen; ++i) {
7082		labels.push(ticks[i].label);
7083	}
7084
7085	return labels;
7086}
7087
7088function getLineValue(scale, index, offsetGridLines) {
7089	var lineValue = scale.getPixelForTick(index);
7090
7091	if (offsetGridLines) {
7092		if (index === 0) {
7093			lineValue -= (scale.getPixelForTick(1) - lineValue) / 2;
7094		} else {
7095			lineValue -= (lineValue - scale.getPixelForTick(index - 1)) / 2;
7096		}
7097	}
7098	return lineValue;
7099}
7100
7101module.exports = function(Chart) {
7102
7103	function computeTextSize(context, tick, font) {
7104		return helpers.isArray(tick) ?
7105			helpers.longestText(context, font, tick) :
7106			context.measureText(tick).width;
7107	}
7108
7109	function parseFontOptions(options) {
7110		var valueOrDefault = helpers.valueOrDefault;
7111		var globalDefaults = defaults.global;
7112		var size = valueOrDefault(options.fontSize, globalDefaults.defaultFontSize);
7113		var style = valueOrDefault(options.fontStyle, globalDefaults.defaultFontStyle);
7114		var family = valueOrDefault(options.fontFamily, globalDefaults.defaultFontFamily);
7115
7116		return {
7117			size: size,
7118			style: style,
7119			family: family,
7120			font: helpers.fontString(size, style, family)
7121		};
7122	}
7123
7124	function parseLineHeight(options) {
7125		return helpers.options.toLineHeight(
7126			helpers.valueOrDefault(options.lineHeight, 1.2),
7127			helpers.valueOrDefault(options.fontSize, defaults.global.defaultFontSize));
7128	}
7129
7130	Chart.Scale = Element.extend({
7131		/**
7132		 * Get the padding needed for the scale
7133		 * @method getPadding
7134		 * @private
7135		 * @returns {Padding} the necessary padding
7136		 */
7137		getPadding: function() {
7138			var me = this;
7139			return {
7140				left: me.paddingLeft || 0,
7141				top: me.paddingTop || 0,
7142				right: me.paddingRight || 0,
7143				bottom: me.paddingBottom || 0
7144			};
7145		},
7146
7147		/**
7148		 * Returns the scale tick objects ({label, major})
7149		 * @since 2.7
7150		 */
7151		getTicks: function() {
7152			return this._ticks;
7153		},
7154
7155		// These methods are ordered by lifecyle. Utilities then follow.
7156		// Any function defined here is inherited by all scale types.
7157		// Any function can be extended by the scale type
7158
7159		mergeTicksOptions: function() {
7160			var ticks = this.options.ticks;
7161			if (ticks.minor === false) {
7162				ticks.minor = {
7163					display: false
7164				};
7165			}
7166			if (ticks.major === false) {
7167				ticks.major = {
7168					display: false
7169				};
7170			}
7171			for (var key in ticks) {
7172				if (key !== 'major' && key !== 'minor') {
7173					if (typeof ticks.minor[key] === 'undefined') {
7174						ticks.minor[key] = ticks[key];
7175					}
7176					if (typeof ticks.major[key] === 'undefined') {
7177						ticks.major[key] = ticks[key];
7178					}
7179				}
7180			}
7181		},
7182		beforeUpdate: function() {
7183			helpers.callback(this.options.beforeUpdate, [this]);
7184		},
7185		update: function(maxWidth, maxHeight, margins) {
7186			var me = this;
7187			var i, ilen, labels, label, ticks, tick;
7188
7189			// Update Lifecycle - Probably don't want to ever extend or overwrite this function ;)
7190			me.beforeUpdate();
7191
7192			// Absorb the master measurements
7193			me.maxWidth = maxWidth;
7194			me.maxHeight = maxHeight;
7195			me.margins = helpers.extend({
7196				left: 0,
7197				right: 0,
7198				top: 0,
7199				bottom: 0
7200			}, margins);
7201			me.longestTextCache = me.longestTextCache || {};
7202
7203			// Dimensions
7204			me.beforeSetDimensions();
7205			me.setDimensions();
7206			me.afterSetDimensions();
7207
7208			// Data min/max
7209			me.beforeDataLimits();
7210			me.determineDataLimits();
7211			me.afterDataLimits();
7212
7213			// Ticks - `this.ticks` is now DEPRECATED!
7214			// Internal ticks are now stored as objects in the PRIVATE `this._ticks` member
7215			// and must not be accessed directly from outside this class. `this.ticks` being
7216			// around for long time and not marked as private, we can't change its structure
7217			// without unexpected breaking changes. If you need to access the scale ticks,
7218			// use scale.getTicks() instead.
7219
7220			me.beforeBuildTicks();
7221
7222			// New implementations should return an array of objects but for BACKWARD COMPAT,
7223			// we still support no return (`this.ticks` internally set by calling this method).
7224			ticks = me.buildTicks() || [];
7225
7226			me.afterBuildTicks();
7227
7228			me.beforeTickToLabelConversion();
7229
7230			// New implementations should return the formatted tick labels but for BACKWARD
7231			// COMPAT, we still support no return (`this.ticks` internally changed by calling
7232			// this method and supposed to contain only string values).
7233			labels = me.convertTicksToLabels(ticks) || me.ticks;
7234
7235			me.afterTickToLabelConversion();
7236
7237			me.ticks = labels;   // BACKWARD COMPATIBILITY
7238
7239			// IMPORTANT: from this point, we consider that `this.ticks` will NEVER change!
7240
7241			// BACKWARD COMPAT: synchronize `_ticks` with labels (so potentially `this.ticks`)
7242			for (i = 0, ilen = labels.length; i < ilen; ++i) {
7243				label = labels[i];
7244				tick = ticks[i];
7245				if (!tick) {
7246					ticks.push(tick = {
7247						label: label,
7248						major: false
7249					});
7250				} else {
7251					tick.label = label;
7252				}
7253			}
7254
7255			me._ticks = ticks;
7256
7257			// Tick Rotation
7258			me.beforeCalculateTickRotation();
7259			me.calculateTickRotation();
7260			me.afterCalculateTickRotation();
7261			// Fit
7262			me.beforeFit();
7263			me.fit();
7264			me.afterFit();
7265			//
7266			me.afterUpdate();
7267
7268			return me.minSize;
7269
7270		},
7271		afterUpdate: function() {
7272			helpers.callback(this.options.afterUpdate, [this]);
7273		},
7274
7275		//
7276
7277		beforeSetDimensions: function() {
7278			helpers.callback(this.options.beforeSetDimensions, [this]);
7279		},
7280		setDimensions: function() {
7281			var me = this;
7282			// Set the unconstrained dimension before label rotation
7283			if (me.isHorizontal()) {
7284				// Reset position before calculating rotation
7285				me.width = me.maxWidth;
7286				me.left = 0;
7287				me.right = me.width;
7288			} else {
7289				me.height = me.maxHeight;
7290
7291				// Reset position before calculating rotation
7292				me.top = 0;
7293				me.bottom = me.height;
7294			}
7295
7296			// Reset padding
7297			me.paddingLeft = 0;
7298			me.paddingTop = 0;
7299			me.paddingRight = 0;
7300			me.paddingBottom = 0;
7301		},
7302		afterSetDimensions: function() {
7303			helpers.callback(this.options.afterSetDimensions, [this]);
7304		},
7305
7306		// Data limits
7307		beforeDataLimits: function() {
7308			helpers.callback(this.options.beforeDataLimits, [this]);
7309		},
7310		determineDataLimits: helpers.noop,
7311		afterDataLimits: function() {
7312			helpers.callback(this.options.afterDataLimits, [this]);
7313		},
7314
7315		//
7316		beforeBuildTicks: function() {
7317			helpers.callback(this.options.beforeBuildTicks, [this]);
7318		},
7319		buildTicks: helpers.noop,
7320		afterBuildTicks: function() {
7321			helpers.callback(this.options.afterBuildTicks, [this]);
7322		},
7323
7324		beforeTickToLabelConversion: function() {
7325			helpers.callback(this.options.beforeTickToLabelConversion, [this]);
7326		},
7327		convertTicksToLabels: function() {
7328			var me = this;
7329			// Convert ticks to strings
7330			var tickOpts = me.options.ticks;
7331			me.ticks = me.ticks.map(tickOpts.userCallback || tickOpts.callback, this);
7332		},
7333		afterTickToLabelConversion: function() {
7334			helpers.callback(this.options.afterTickToLabelConversion, [this]);
7335		},
7336
7337		//
7338
7339		beforeCalculateTickRotation: function() {
7340			helpers.callback(this.options.beforeCalculateTickRotation, [this]);
7341		},
7342		calculateTickRotation: function() {
7343			var me = this;
7344			var context = me.ctx;
7345			var tickOpts = me.options.ticks;
7346			var labels = labelsFromTicks(me._ticks);
7347
7348			// Get the width of each grid by calculating the difference
7349			// between x offsets between 0 and 1.
7350			var tickFont = parseFontOptions(tickOpts);
7351			context.font = tickFont.font;
7352
7353			var labelRotation = tickOpts.minRotation || 0;
7354
7355			if (labels.length && me.options.display && me.isHorizontal()) {
7356				var originalLabelWidth = helpers.longestText(context, tickFont.font, labels, me.longestTextCache);
7357				var labelWidth = originalLabelWidth;
7358				var cosRotation, sinRotation;
7359
7360				// Allow 3 pixels x2 padding either side for label readability
7361				var tickWidth = me.getPixelForTick(1) - me.getPixelForTick(0) - 6;
7362
7363				// Max label rotation can be set or default to 90 - also act as a loop counter
7364				while (labelWidth > tickWidth && labelRotation < tickOpts.maxRotation) {
7365					var angleRadians = helpers.toRadians(labelRotation);
7366					cosRotation = Math.cos(angleRadians);
7367					sinRotation = Math.sin(angleRadians);
7368
7369					if (sinRotation * originalLabelWidth > me.maxHeight) {
7370						// go back one step
7371						labelRotation--;
7372						break;
7373					}
7374
7375					labelRotation++;
7376					labelWidth = cosRotation * originalLabelWidth;
7377				}
7378			}
7379
7380			me.labelRotation = labelRotation;
7381		},
7382		afterCalculateTickRotation: function() {
7383			helpers.callback(this.options.afterCalculateTickRotation, [this]);
7384		},
7385
7386		//
7387
7388		beforeFit: function() {
7389			helpers.callback(this.options.beforeFit, [this]);
7390		},
7391		fit: function() {
7392			var me = this;
7393			// Reset
7394			var minSize = me.minSize = {
7395				width: 0,
7396				height: 0
7397			};
7398
7399			var labels = labelsFromTicks(me._ticks);
7400
7401			var opts = me.options;
7402			var tickOpts = opts.ticks;
7403			var scaleLabelOpts = opts.scaleLabel;
7404			var gridLineOpts = opts.gridLines;
7405			var display = opts.display;
7406			var isHorizontal = me.isHorizontal();
7407
7408			var tickFont = parseFontOptions(tickOpts);
7409			var tickMarkLength = opts.gridLines.tickMarkLength;
7410
7411			// Width
7412			if (isHorizontal) {
7413				// subtract the margins to line up with the chartArea if we are a full width scale
7414				minSize.width = me.isFullWidth() ? me.maxWidth - me.margins.left - me.margins.right : me.maxWidth;
7415			} else {
7416				minSize.width = display && gridLineOpts.drawTicks ? tickMarkLength : 0;
7417			}
7418
7419			// height
7420			if (isHorizontal) {
7421				minSize.height = display && gridLineOpts.drawTicks ? tickMarkLength : 0;
7422			} else {
7423				minSize.height = me.maxHeight; // fill all the height
7424			}
7425
7426			// Are we showing a title for the scale?
7427			if (scaleLabelOpts.display && display) {
7428				var scaleLabelLineHeight = parseLineHeight(scaleLabelOpts);
7429				var scaleLabelPadding = helpers.options.toPadding(scaleLabelOpts.padding);
7430				var deltaHeight = scaleLabelLineHeight + scaleLabelPadding.height;
7431
7432				if (isHorizontal) {
7433					minSize.height += deltaHeight;
7434				} else {
7435					minSize.width += deltaHeight;
7436				}
7437			}
7438
7439			// Don't bother fitting the ticks if we are not showing them
7440			if (tickOpts.display && display) {
7441				var largestTextWidth = helpers.longestText(me.ctx, tickFont.font, labels, me.longestTextCache);
7442				var tallestLabelHeightInLines = helpers.numberOfLabelLines(labels);
7443				var lineSpace = tickFont.size * 0.5;
7444				var tickPadding = me.options.ticks.padding;
7445
7446				if (isHorizontal) {
7447					// A horizontal axis is more constrained by the height.
7448					me.longestLabelWidth = largestTextWidth;
7449
7450					var angleRadians = helpers.toRadians(me.labelRotation);
7451					var cosRotation = Math.cos(angleRadians);
7452					var sinRotation = Math.sin(angleRadians);
7453
7454					// TODO - improve this calculation
7455					var labelHeight = (sinRotation * largestTextWidth)
7456						+ (tickFont.size * tallestLabelHeightInLines)
7457						+ (lineSpace * (tallestLabelHeightInLines - 1))
7458						+ lineSpace; // padding
7459
7460					minSize.height = Math.min(me.maxHeight, minSize.height + labelHeight + tickPadding);
7461
7462					me.ctx.font = tickFont.font;
7463					var firstLabelWidth = computeTextSize(me.ctx, labels[0], tickFont.font);
7464					var lastLabelWidth = computeTextSize(me.ctx, labels[labels.length - 1], tickFont.font);
7465
7466					// Ensure that our ticks are always inside the canvas. When rotated, ticks are right aligned
7467					// which means that the right padding is dominated by the font height
7468					if (me.labelRotation !== 0) {
7469						me.paddingLeft = opts.position === 'bottom' ? (cosRotation * firstLabelWidth) + 3 : (cosRotation * lineSpace) + 3; // add 3 px to move away from canvas edges
7470						me.paddingRight = opts.position === 'bottom' ? (cosRotation * lineSpace) + 3 : (cosRotation * lastLabelWidth) + 3;
7471					} else {
7472						me.paddingLeft = firstLabelWidth / 2 + 3; // add 3 px to move away from canvas edges
7473						me.paddingRight = lastLabelWidth / 2 + 3;
7474					}
7475				} else {
7476					// A vertical axis is more constrained by the width. Labels are the
7477					// dominant factor here, so get that length first and account for padding
7478					if (tickOpts.mirror) {
7479						largestTextWidth = 0;
7480					} else {
7481						// use lineSpace for consistency with horizontal axis
7482						// tickPadding is not implemented for horizontal
7483						largestTextWidth += tickPadding + lineSpace;
7484					}
7485
7486					minSize.width = Math.min(me.maxWidth, minSize.width + largestTextWidth);
7487
7488					me.paddingTop = tickFont.size / 2;
7489					me.paddingBottom = tickFont.size / 2;
7490				}
7491			}
7492
7493			me.handleMargins();
7494
7495			me.width = minSize.width;
7496			me.height = minSize.height;
7497		},
7498
7499		/**
7500		 * Handle margins and padding interactions
7501		 * @private
7502		 */
7503		handleMargins: function() {
7504			var me = this;
7505			if (me.margins) {
7506				me.paddingLeft = Math.max(me.paddingLeft - me.margins.left, 0);
7507				me.paddingTop = Math.max(me.paddingTop - me.margins.top, 0);
7508				me.paddingRight = Math.max(me.paddingRight - me.margins.right, 0);
7509				me.paddingBottom = Math.max(me.paddingBottom - me.margins.bottom, 0);
7510			}
7511		},
7512
7513		afterFit: function() {
7514			helpers.callback(this.options.afterFit, [this]);
7515		},
7516
7517		// Shared Methods
7518		isHorizontal: function() {
7519			return this.options.position === 'top' || this.options.position === 'bottom';
7520		},
7521		isFullWidth: function() {
7522			return (this.options.fullWidth);
7523		},
7524
7525		// 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
7526		getRightValue: function(rawValue) {
7527			// Null and undefined values first
7528			if (helpers.isNullOrUndef(rawValue)) {
7529				return NaN;
7530			}
7531			// isNaN(object) returns true, so make sure NaN is checking for a number; Discard Infinite values
7532			if (typeof rawValue === 'number' && !isFinite(rawValue)) {
7533				return NaN;
7534			}
7535			// If it is in fact an object, dive in one more level
7536			if (rawValue) {
7537				if (this.isHorizontal()) {
7538					if (rawValue.x !== undefined) {
7539						return this.getRightValue(rawValue.x);
7540					}
7541				} else if (rawValue.y !== undefined) {
7542					return this.getRightValue(rawValue.y);
7543				}
7544			}
7545
7546			// Value is good, return it
7547			return rawValue;
7548		},
7549
7550		/**
7551		 * Used to get the value to display in the tooltip for the data at the given index
7552		 * @param index
7553		 * @param datasetIndex
7554		 */
7555		getLabelForIndex: helpers.noop,
7556
7557		/**
7558		 * Returns the location of the given data point. Value can either be an index or a numerical value
7559		 * The coordinate (0, 0) is at the upper-left corner of the canvas
7560		 * @param value
7561		 * @param index
7562		 * @param datasetIndex
7563		 */
7564		getPixelForValue: helpers.noop,
7565
7566		/**
7567		 * Used to get the data value from a given pixel. This is the inverse of getPixelForValue
7568		 * The coordinate (0, 0) is at the upper-left corner of the canvas
7569		 * @param pixel
7570		 */
7571		getValueForPixel: helpers.noop,
7572
7573		/**
7574		 * Returns the location of the tick at the given index
7575		 * The coordinate (0, 0) is at the upper-left corner of the canvas
7576		 */
7577		getPixelForTick: function(index) {
7578			var me = this;
7579			var offset = me.options.offset;
7580			if (me.isHorizontal()) {
7581				var innerWidth = me.width - (me.paddingLeft + me.paddingRight);
7582				var tickWidth = innerWidth / Math.max((me._ticks.length - (offset ? 0 : 1)), 1);
7583				var pixel = (tickWidth * index) + me.paddingLeft;
7584
7585				if (offset) {
7586					pixel += tickWidth / 2;
7587				}
7588
7589				var finalVal = me.left + Math.round(pixel);
7590				finalVal += me.isFullWidth() ? me.margins.left : 0;
7591				return finalVal;
7592			}
7593			var innerHeight = me.height - (me.paddingTop + me.paddingBottom);
7594			return me.top + (index * (innerHeight / (me._ticks.length - 1)));
7595		},
7596
7597		/**
7598		 * Utility for getting the pixel location of a percentage of scale
7599		 * The coordinate (0, 0) is at the upper-left corner of the canvas
7600		 */
7601		getPixelForDecimal: function(decimal) {
7602			var me = this;
7603			if (me.isHorizontal()) {
7604				var innerWidth = me.width - (me.paddingLeft + me.paddingRight);
7605				var valueOffset = (innerWidth * decimal) + me.paddingLeft;
7606
7607				var finalVal = me.left + Math.round(valueOffset);
7608				finalVal += me.isFullWidth() ? me.margins.left : 0;
7609				return finalVal;
7610			}
7611			return me.top + (decimal * me.height);
7612		},
7613
7614		/**
7615		 * Returns the pixel for the minimum chart value
7616		 * The coordinate (0, 0) is at the upper-left corner of the canvas
7617		 */
7618		getBasePixel: function() {
7619			return this.getPixelForValue(this.getBaseValue());
7620		},
7621
7622		getBaseValue: function() {
7623			var me = this;
7624			var min = me.min;
7625			var max = me.max;
7626
7627			return me.beginAtZero ? 0 :
7628				min < 0 && max < 0 ? max :
7629				min > 0 && max > 0 ? min :
7630				0;
7631		},
7632
7633		/**
7634		 * Returns a subset of ticks to be plotted to avoid overlapping labels.
7635		 * @private
7636		 */
7637		_autoSkip: function(ticks) {
7638			var skipRatio;
7639			var me = this;
7640			var isHorizontal = me.isHorizontal();
7641			var optionTicks = me.options.ticks.minor;
7642			var tickCount = ticks.length;
7643			var labelRotationRadians = helpers.toRadians(me.labelRotation);
7644			var cosRotation = Math.cos(labelRotationRadians);
7645			var longestRotatedLabel = me.longestLabelWidth * cosRotation;
7646			var result = [];
7647			var i, tick, shouldSkip;
7648
7649			// figure out the maximum number of gridlines to show
7650			var maxTicks;
7651			if (optionTicks.maxTicksLimit) {
7652				maxTicks = optionTicks.maxTicksLimit;
7653			}
7654
7655			if (isHorizontal) {
7656				skipRatio = false;
7657
7658				if ((longestRotatedLabel + optionTicks.autoSkipPadding) * tickCount > (me.width - (me.paddingLeft + me.paddingRight))) {
7659					skipRatio = 1 + Math.floor(((longestRotatedLabel + optionTicks.autoSkipPadding) * tickCount) / (me.width - (me.paddingLeft + me.paddingRight)));
7660				}
7661
7662				// if they defined a max number of optionTicks,
7663				// increase skipRatio until that number is met
7664				if (maxTicks && tickCount > maxTicks) {
7665					skipRatio = Math.max(skipRatio, Math.floor(tickCount / maxTicks));
7666				}
7667			}
7668
7669			for (i = 0; i < tickCount; i++) {
7670				tick = ticks[i];
7671
7672				// Since we always show the last tick,we need may need to hide the last shown one before
7673				shouldSkip = (skipRatio > 1 && i % skipRatio > 0) || (i % skipRatio === 0 && i + skipRatio >= tickCount);
7674				if (shouldSkip && i !== tickCount - 1) {
7675					// leave tick in place but make sure it's not displayed (#4635)
7676					delete tick.label;
7677				}
7678				result.push(tick);
7679			}
7680			return result;
7681		},
7682
7683		// Actually draw the scale on the canvas
7684		// @param {rectangle} chartArea : the area of the chart to draw full grid lines on
7685		draw: function(chartArea) {
7686			var me = this;
7687			var options = me.options;
7688			if (!options.display) {
7689				return;
7690			}
7691
7692			var context = me.ctx;
7693			var globalDefaults = defaults.global;
7694			var optionTicks = options.ticks.minor;
7695			var optionMajorTicks = options.ticks.major || optionTicks;
7696			var gridLines = options.gridLines;
7697			var scaleLabel = options.scaleLabel;
7698
7699			var isRotated = me.labelRotation !== 0;
7700			var isHorizontal = me.isHorizontal();
7701
7702			var ticks = optionTicks.autoSkip ? me._autoSkip(me.getTicks()) : me.getTicks();
7703			var tickFontColor = helpers.valueOrDefault(optionTicks.fontColor, globalDefaults.defaultFontColor);
7704			var tickFont = parseFontOptions(optionTicks);
7705			var majorTickFontColor = helpers.valueOrDefault(optionMajorTicks.fontColor, globalDefaults.defaultFontColor);
7706			var majorTickFont = parseFontOptions(optionMajorTicks);
7707
7708			var tl = gridLines.drawTicks ? gridLines.tickMarkLength : 0;
7709
7710			var scaleLabelFontColor = helpers.valueOrDefault(scaleLabel.fontColor, globalDefaults.defaultFontColor);
7711			var scaleLabelFont = parseFontOptions(scaleLabel);
7712			var scaleLabelPadding = helpers.options.toPadding(scaleLabel.padding);
7713			var labelRotationRadians = helpers.toRadians(me.labelRotation);
7714
7715			var itemsToDraw = [];
7716
7717			var xTickStart = options.position === 'right' ? me.left : me.right - tl;
7718			var xTickEnd = options.position === 'right' ? me.left + tl : me.right;
7719			var yTickStart = options.position === 'bottom' ? me.top : me.bottom - tl;
7720			var yTickEnd = options.position === 'bottom' ? me.top + tl : me.bottom;
7721
7722			helpers.each(ticks, function(tick, index) {
7723				// autoskipper skipped this tick (#4635)
7724				if (helpers.isNullOrUndef(tick.label)) {
7725					return;
7726				}
7727
7728				var label = tick.label;
7729				var lineWidth, lineColor, borderDash, borderDashOffset;
7730				if (index === me.zeroLineIndex && options.offset === gridLines.offsetGridLines) {
7731					// Draw the first index specially
7732					lineWidth = gridLines.zeroLineWidth;
7733					lineColor = gridLines.zeroLineColor;
7734					borderDash = gridLines.zeroLineBorderDash;
7735					borderDashOffset = gridLines.zeroLineBorderDashOffset;
7736				} else {
7737					lineWidth = helpers.valueAtIndexOrDefault(gridLines.lineWidth, index);
7738					lineColor = helpers.valueAtIndexOrDefault(gridLines.color, index);
7739					borderDash = helpers.valueOrDefault(gridLines.borderDash, globalDefaults.borderDash);
7740					borderDashOffset = helpers.valueOrDefault(gridLines.borderDashOffset, globalDefaults.borderDashOffset);
7741				}
7742
7743				// Common properties
7744				var tx1, ty1, tx2, ty2, x1, y1, x2, y2, labelX, labelY;
7745				var textAlign = 'middle';
7746				var textBaseline = 'middle';
7747				var tickPadding = optionTicks.padding;
7748
7749				if (isHorizontal) {
7750					var labelYOffset = tl + tickPadding;
7751
7752					if (options.position === 'bottom') {
7753						// bottom
7754						textBaseline = !isRotated ? 'top' : 'middle';
7755						textAlign = !isRotated ? 'center' : 'right';
7756						labelY = me.top + labelYOffset;
7757					} else {
7758						// top
7759						textBaseline = !isRotated ? 'bottom' : 'middle';
7760						textAlign = !isRotated ? 'center' : 'left';
7761						labelY = me.bottom - labelYOffset;
7762					}
7763
7764					var xLineValue = getLineValue(me, index, gridLines.offsetGridLines && ticks.length > 1);
7765					if (xLineValue < me.left) {
7766						lineColor = 'rgba(0,0,0,0)';
7767					}
7768					xLineValue += helpers.aliasPixel(lineWidth);
7769
7770					labelX = me.getPixelForTick(index) + optionTicks.labelOffset; // x values for optionTicks (need to consider offsetLabel option)
7771
7772					tx1 = tx2 = x1 = x2 = xLineValue;
7773					ty1 = yTickStart;
7774					ty2 = yTickEnd;
7775					y1 = chartArea.top;
7776					y2 = chartArea.bottom;
7777				} else {
7778					var isLeft = options.position === 'left';
7779					var labelXOffset;
7780
7781					if (optionTicks.mirror) {
7782						textAlign = isLeft ? 'left' : 'right';
7783						labelXOffset = tickPadding;
7784					} else {
7785						textAlign = isLeft ? 'right' : 'left';
7786						labelXOffset = tl + tickPadding;
7787					}
7788
7789					labelX = isLeft ? me.right - labelXOffset : me.left + labelXOffset;
7790
7791					var yLineValue = getLineValue(me, index, gridLines.offsetGridLines && ticks.length > 1);
7792					if (yLineValue < me.top) {
7793						lineColor = 'rgba(0,0,0,0)';
7794					}
7795					yLineValue += helpers.aliasPixel(lineWidth);
7796
7797					labelY = me.getPixelForTick(index) + optionTicks.labelOffset;
7798
7799					tx1 = xTickStart;
7800					tx2 = xTickEnd;
7801					x1 = chartArea.left;
7802					x2 = chartArea.right;
7803					ty1 = ty2 = y1 = y2 = yLineValue;
7804				}
7805
7806				itemsToDraw.push({
7807					tx1: tx1,
7808					ty1: ty1,
7809					tx2: tx2,
7810					ty2: ty2,
7811					x1: x1,
7812					y1: y1,
7813					x2: x2,
7814					y2: y2,
7815					labelX: labelX,
7816					labelY: labelY,
7817					glWidth: lineWidth,
7818					glColor: lineColor,
7819					glBorderDash: borderDash,
7820					glBorderDashOffset: borderDashOffset,
7821					rotation: -1 * labelRotationRadians,
7822					label: label,
7823					major: tick.major,
7824					textBaseline: textBaseline,
7825					textAlign: textAlign
7826				});
7827			});
7828
7829			// Draw all of the tick labels, tick marks, and grid lines at the correct places
7830			helpers.each(itemsToDraw, function(itemToDraw) {
7831				if (gridLines.display) {
7832					context.save();
7833					context.lineWidth = itemToDraw.glWidth;
7834					context.strokeStyle = itemToDraw.glColor;
7835					if (context.setLineDash) {
7836						context.setLineDash(itemToDraw.glBorderDash);
7837						context.lineDashOffset = itemToDraw.glBorderDashOffset;
7838					}
7839
7840					context.beginPath();
7841
7842					if (gridLines.drawTicks) {
7843						context.moveTo(itemToDraw.tx1, itemToDraw.ty1);
7844						context.lineTo(itemToDraw.tx2, itemToDraw.ty2);
7845					}
7846
7847					if (gridLines.drawOnChartArea) {
7848						context.moveTo(itemToDraw.x1, itemToDraw.y1);
7849						context.lineTo(itemToDraw.x2, itemToDraw.y2);
7850					}
7851
7852					context.stroke();
7853					context.restore();
7854				}
7855
7856				if (optionTicks.display) {
7857					// Make sure we draw text in the correct color and font
7858					context.save();
7859					context.translate(itemToDraw.labelX, itemToDraw.labelY);
7860					context.rotate(itemToDraw.rotation);
7861					context.font = itemToDraw.major ? majorTickFont.font : tickFont.font;
7862					context.fillStyle = itemToDraw.major ? majorTickFontColor : tickFontColor;
7863					context.textBaseline = itemToDraw.textBaseline;
7864					context.textAlign = itemToDraw.textAlign;
7865
7866					var label = itemToDraw.label;
7867					if (helpers.isArray(label)) {
7868						for (var i = 0, y = 0; i < label.length; ++i) {
7869							// We just make sure the multiline element is a string here..
7870							context.fillText('' + label[i], 0, y);
7871							// apply same lineSpacing as calculated @ L#320
7872							y += (tickFont.size * 1.5);
7873						}
7874					} else {
7875						context.fillText(label, 0, 0);
7876					}
7877					context.restore();
7878				}
7879			});
7880
7881			if (scaleLabel.display) {
7882				// Draw the scale label
7883				var scaleLabelX;
7884				var scaleLabelY;
7885				var rotation = 0;
7886				var halfLineHeight = parseLineHeight(scaleLabel) / 2;
7887
7888				if (isHorizontal) {
7889					scaleLabelX = me.left + ((me.right - me.left) / 2); // midpoint of the width
7890					scaleLabelY = options.position === 'bottom'
7891						? me.bottom - halfLineHeight - scaleLabelPadding.bottom
7892						: me.top + halfLineHeight + scaleLabelPadding.top;
7893				} else {
7894					var isLeft = options.position === 'left';
7895					scaleLabelX = isLeft
7896						? me.left + halfLineHeight + scaleLabelPadding.top
7897						: me.right - halfLineHeight - scaleLabelPadding.top;
7898					scaleLabelY = me.top + ((me.bottom - me.top) / 2);
7899					rotation = isLeft ? -0.5 * Math.PI : 0.5 * Math.PI;
7900				}
7901
7902				context.save();
7903				context.translate(scaleLabelX, scaleLabelY);
7904				context.rotate(rotation);
7905				context.textAlign = 'center';
7906				context.textBaseline = 'middle';
7907				context.fillStyle = scaleLabelFontColor; // render in correct colour
7908				context.font = scaleLabelFont.font;
7909				context.fillText(scaleLabel.labelString, 0, 0);
7910				context.restore();
7911			}
7912
7913			if (gridLines.drawBorder) {
7914				// Draw the line at the edge of the axis
7915				context.lineWidth = helpers.valueAtIndexOrDefault(gridLines.lineWidth, 0);
7916				context.strokeStyle = helpers.valueAtIndexOrDefault(gridLines.color, 0);
7917				var x1 = me.left;
7918				var x2 = me.right;
7919				var y1 = me.top;
7920				var y2 = me.bottom;
7921
7922				var aliasPixel = helpers.aliasPixel(context.lineWidth);
7923				if (isHorizontal) {
7924					y1 = y2 = options.position === 'top' ? me.bottom : me.top;
7925					y1 += aliasPixel;
7926					y2 += aliasPixel;
7927				} else {
7928					x1 = x2 = options.position === 'left' ? me.right : me.left;
7929					x1 += aliasPixel;
7930					x2 += aliasPixel;
7931				}
7932
7933				context.beginPath();
7934				context.moveTo(x1, y1);
7935				context.lineTo(x2, y2);
7936				context.stroke();
7937			}
7938		}
7939	});
7940};
7941
7942},{"25":25,"26":26,"34":34,"45":45}],33:[function(require,module,exports){
7943'use strict';
7944
7945var defaults = require(25);
7946var helpers = require(45);
7947var layouts = require(30);
7948
7949module.exports = function(Chart) {
7950
7951	Chart.scaleService = {
7952		// Scale registration object. Extensions can register new scale types (such as log or DB scales) and then
7953		// use the new chart options to grab the correct scale
7954		constructors: {},
7955		// Use a registration function so that we can move to an ES6 map when we no longer need to support
7956		// old browsers
7957
7958		// Scale config defaults
7959		defaults: {},
7960		registerScaleType: function(type, scaleConstructor, scaleDefaults) {
7961			this.constructors[type] = scaleConstructor;
7962			this.defaults[type] = helpers.clone(scaleDefaults);
7963		},
7964		getScaleConstructor: function(type) {
7965			return this.constructors.hasOwnProperty(type) ? this.constructors[type] : undefined;
7966		},
7967		getScaleDefaults: function(type) {
7968			// Return the scale defaults merged with the global settings so that we always use the latest ones
7969			return this.defaults.hasOwnProperty(type) ? helpers.merge({}, [defaults.scale, this.defaults[type]]) : {};
7970		},
7971		updateScaleDefaults: function(type, additions) {
7972			var me = this;
7973			if (me.defaults.hasOwnProperty(type)) {
7974				me.defaults[type] = helpers.extend(me.defaults[type], additions);
7975			}
7976		},
7977		addScalesToLayout: function(chart) {
7978			// Adds each scale to the chart.boxes array to be sized accordingly
7979			helpers.each(chart.scales, function(scale) {
7980				// Set ILayoutItem parameters for backwards compatibility
7981				scale.fullWidth = scale.options.fullWidth;
7982				scale.position = scale.options.position;
7983				scale.weight = scale.options.weight;
7984				layouts.addBox(chart, scale);
7985			});
7986		}
7987	};
7988};
7989
7990},{"25":25,"30":30,"45":45}],34:[function(require,module,exports){
7991'use strict';
7992
7993var helpers = require(45);
7994
7995/**
7996 * Namespace to hold static tick generation functions
7997 * @namespace Chart.Ticks
7998 */
7999module.exports = {
8000	/**
8001	 * Namespace to hold formatters for different types of ticks
8002	 * @namespace Chart.Ticks.formatters
8003	 */
8004	formatters: {
8005		/**
8006		 * Formatter for value labels
8007		 * @method Chart.Ticks.formatters.values
8008		 * @param value the value to display
8009		 * @return {String|Array} the label to display
8010		 */
8011		values: function(value) {
8012			return helpers.isArray(value) ? value : '' + value;
8013		},
8014
8015		/**
8016		 * Formatter for linear numeric ticks
8017		 * @method Chart.Ticks.formatters.linear
8018		 * @param tickValue {Number} the value to be formatted
8019		 * @param index {Number} the position of the tickValue parameter in the ticks array
8020		 * @param ticks {Array<Number>} the list of ticks being converted
8021		 * @return {String} string representation of the tickValue parameter
8022		 */
8023		linear: function(tickValue, index, ticks) {
8024			// If we have lots of ticks, don't use the ones
8025			var delta = ticks.length > 3 ? ticks[2] - ticks[1] : ticks[1] - ticks[0];
8026
8027			// If we have a number like 2.5 as the delta, figure out how many decimal places we need
8028			if (Math.abs(delta) > 1) {
8029				if (tickValue !== Math.floor(tickValue)) {
8030					// not an integer
8031					delta = tickValue - Math.floor(tickValue);
8032				}
8033			}
8034
8035			var logDelta = helpers.log10(Math.abs(delta));
8036			var tickString = '';
8037
8038			if (tickValue !== 0) {
8039				var numDecimal = -1 * Math.floor(logDelta);
8040				numDecimal = Math.max(Math.min(numDecimal, 20), 0); // toFixed has a max of 20 decimal places
8041				tickString = tickValue.toFixed(numDecimal);
8042			} else {
8043				tickString = '0'; // never show decimal places for 0
8044			}
8045
8046			return tickString;
8047		},
8048
8049		logarithmic: function(tickValue, index, ticks) {
8050			var remain = tickValue / (Math.pow(10, Math.floor(helpers.log10(tickValue))));
8051
8052			if (tickValue === 0) {
8053				return '0';
8054			} else if (remain === 1 || remain === 2 || remain === 5 || index === 0 || index === ticks.length - 1) {
8055				return tickValue.toExponential();
8056			}
8057			return '';
8058		}
8059	}
8060};
8061
8062},{"45":45}],35:[function(require,module,exports){
8063'use strict';
8064
8065var defaults = require(25);
8066var Element = require(26);
8067var helpers = require(45);
8068
8069defaults._set('global', {
8070	tooltips: {
8071		enabled: true,
8072		custom: null,
8073		mode: 'nearest',
8074		position: 'average',
8075		intersect: true,
8076		backgroundColor: 'rgba(0,0,0,0.8)',
8077		titleFontStyle: 'bold',
8078		titleSpacing: 2,
8079		titleMarginBottom: 6,
8080		titleFontColor: '#fff',
8081		titleAlign: 'left',
8082		bodySpacing: 2,
8083		bodyFontColor: '#fff',
8084		bodyAlign: 'left',
8085		footerFontStyle: 'bold',
8086		footerSpacing: 2,
8087		footerMarginTop: 6,
8088		footerFontColor: '#fff',
8089		footerAlign: 'left',
8090		yPadding: 6,
8091		xPadding: 6,
8092		caretPadding: 2,
8093		caretSize: 5,
8094		cornerRadius: 6,
8095		multiKeyBackground: '#fff',
8096		displayColors: true,
8097		borderColor: 'rgba(0,0,0,0)',
8098		borderWidth: 0,
8099		callbacks: {
8100			// Args are: (tooltipItems, data)
8101			beforeTitle: helpers.noop,
8102			title: function(tooltipItems, data) {
8103				// Pick first xLabel for now
8104				var title = '';
8105				var labels = data.labels;
8106				var labelCount = labels ? labels.length : 0;
8107
8108				if (tooltipItems.length > 0) {
8109					var item = tooltipItems[0];
8110
8111					if (item.xLabel) {
8112						title = item.xLabel;
8113					} else if (labelCount > 0 && item.index < labelCount) {
8114						title = labels[item.index];
8115					}
8116				}
8117
8118				return title;
8119			},
8120			afterTitle: helpers.noop,
8121
8122			// Args are: (tooltipItems, data)
8123			beforeBody: helpers.noop,
8124
8125			// Args are: (tooltipItem, data)
8126			beforeLabel: helpers.noop,
8127			label: function(tooltipItem, data) {
8128				var label = data.datasets[tooltipItem.datasetIndex].label || '';
8129
8130				if (label) {
8131					label += ': ';
8132				}
8133				label += tooltipItem.yLabel;
8134				return label;
8135			},
8136			labelColor: function(tooltipItem, chart) {
8137				var meta = chart.getDatasetMeta(tooltipItem.datasetIndex);
8138				var activeElement = meta.data[tooltipItem.index];
8139				var view = activeElement._view;
8140				return {
8141					borderColor: view.borderColor,
8142					backgroundColor: view.backgroundColor
8143				};
8144			},
8145			labelTextColor: function() {
8146				return this._options.bodyFontColor;
8147			},
8148			afterLabel: helpers.noop,
8149
8150			// Args are: (tooltipItems, data)
8151			afterBody: helpers.noop,
8152
8153			// Args are: (tooltipItems, data)
8154			beforeFooter: helpers.noop,
8155			footer: helpers.noop,
8156			afterFooter: helpers.noop
8157		}
8158	}
8159});
8160
8161module.exports = function(Chart) {
8162
8163	/**
8164 	 * Helper method to merge the opacity into a color
8165 	 */
8166	function mergeOpacity(colorString, opacity) {
8167		var color = helpers.color(colorString);
8168		return color.alpha(opacity * color.alpha()).rgbaString();
8169	}
8170
8171	// Helper to push or concat based on if the 2nd parameter is an array or not
8172	function pushOrConcat(base, toPush) {
8173		if (toPush) {
8174			if (helpers.isArray(toPush)) {
8175				// base = base.concat(toPush);
8176				Array.prototype.push.apply(base, toPush);
8177			} else {
8178				base.push(toPush);
8179			}
8180		}
8181
8182		return base;
8183	}
8184
8185	// Private helper to create a tooltip item model
8186	// @param element : the chart element (point, arc, bar) to create the tooltip item for
8187	// @return : new tooltip item
8188	function createTooltipItem(element) {
8189		var xScale = element._xScale;
8190		var yScale = element._yScale || element._scale; // handle radar || polarArea charts
8191		var index = element._index;
8192		var datasetIndex = element._datasetIndex;
8193
8194		return {
8195			xLabel: xScale ? xScale.getLabelForIndex(index, datasetIndex) : '',
8196			yLabel: yScale ? yScale.getLabelForIndex(index, datasetIndex) : '',
8197			index: index,
8198			datasetIndex: datasetIndex,
8199			x: element._model.x,
8200			y: element._model.y
8201		};
8202	}
8203
8204	/**
8205	 * Helper to get the reset model for the tooltip
8206	 * @param tooltipOpts {Object} the tooltip options
8207	 */
8208	function getBaseModel(tooltipOpts) {
8209		var globalDefaults = defaults.global;
8210		var valueOrDefault = helpers.valueOrDefault;
8211
8212		return {
8213			// Positioning
8214			xPadding: tooltipOpts.xPadding,
8215			yPadding: tooltipOpts.yPadding,
8216			xAlign: tooltipOpts.xAlign,
8217			yAlign: tooltipOpts.yAlign,
8218
8219			// Body
8220			bodyFontColor: tooltipOpts.bodyFontColor,
8221			_bodyFontFamily: valueOrDefault(tooltipOpts.bodyFontFamily, globalDefaults.defaultFontFamily),
8222			_bodyFontStyle: valueOrDefault(tooltipOpts.bodyFontStyle, globalDefaults.defaultFontStyle),
8223			_bodyAlign: tooltipOpts.bodyAlign,
8224			bodyFontSize: valueOrDefault(tooltipOpts.bodyFontSize, globalDefaults.defaultFontSize),
8225			bodySpacing: tooltipOpts.bodySpacing,
8226
8227			// Title
8228			titleFontColor: tooltipOpts.titleFontColor,
8229			_titleFontFamily: valueOrDefault(tooltipOpts.titleFontFamily, globalDefaults.defaultFontFamily),
8230			_titleFontStyle: valueOrDefault(tooltipOpts.titleFontStyle, globalDefaults.defaultFontStyle),
8231			titleFontSize: valueOrDefault(tooltipOpts.titleFontSize, globalDefaults.defaultFontSize),
8232			_titleAlign: tooltipOpts.titleAlign,
8233			titleSpacing: tooltipOpts.titleSpacing,
8234			titleMarginBottom: tooltipOpts.titleMarginBottom,
8235
8236			// Footer
8237			footerFontColor: tooltipOpts.footerFontColor,
8238			_footerFontFamily: valueOrDefault(tooltipOpts.footerFontFamily, globalDefaults.defaultFontFamily),
8239			_footerFontStyle: valueOrDefault(tooltipOpts.footerFontStyle, globalDefaults.defaultFontStyle),
8240			footerFontSize: valueOrDefault(tooltipOpts.footerFontSize, globalDefaults.defaultFontSize),
8241			_footerAlign: tooltipOpts.footerAlign,
8242			footerSpacing: tooltipOpts.footerSpacing,
8243			footerMarginTop: tooltipOpts.footerMarginTop,
8244
8245			// Appearance
8246			caretSize: tooltipOpts.caretSize,
8247			cornerRadius: tooltipOpts.cornerRadius,
8248			backgroundColor: tooltipOpts.backgroundColor,
8249			opacity: 0,
8250			legendColorBackground: tooltipOpts.multiKeyBackground,
8251			displayColors: tooltipOpts.displayColors,
8252			borderColor: tooltipOpts.borderColor,
8253			borderWidth: tooltipOpts.borderWidth
8254		};
8255	}
8256
8257	/**
8258	 * Get the size of the tooltip
8259	 */
8260	function getTooltipSize(tooltip, model) {
8261		var ctx = tooltip._chart.ctx;
8262
8263		var height = model.yPadding * 2; // Tooltip Padding
8264		var width = 0;
8265
8266		// Count of all lines in the body
8267		var body = model.body;
8268		var combinedBodyLength = body.reduce(function(count, bodyItem) {
8269			return count + bodyItem.before.length + bodyItem.lines.length + bodyItem.after.length;
8270		}, 0);
8271		combinedBodyLength += model.beforeBody.length + model.afterBody.length;
8272
8273		var titleLineCount = model.title.length;
8274		var footerLineCount = model.footer.length;
8275		var titleFontSize = model.titleFontSize;
8276		var bodyFontSize = model.bodyFontSize;
8277		var footerFontSize = model.footerFontSize;
8278
8279		height += titleLineCount * titleFontSize; // Title Lines
8280		height += titleLineCount ? (titleLineCount - 1) * model.titleSpacing : 0; // Title Line Spacing
8281		height += titleLineCount ? model.titleMarginBottom : 0; // Title's bottom Margin
8282		height += combinedBodyLength * bodyFontSize; // Body Lines
8283		height += combinedBodyLength ? (combinedBodyLength - 1) * model.bodySpacing : 0; // Body Line Spacing
8284		height += footerLineCount ? model.footerMarginTop : 0; // Footer Margin
8285		height += footerLineCount * (footerFontSize); // Footer Lines
8286		height += footerLineCount ? (footerLineCount - 1) * model.footerSpacing : 0; // Footer Line Spacing
8287
8288		// Title width
8289		var widthPadding = 0;
8290		var maxLineWidth = function(line) {
8291			width = Math.max(width, ctx.measureText(line).width + widthPadding);
8292		};
8293
8294		ctx.font = helpers.fontString(titleFontSize, model._titleFontStyle, model._titleFontFamily);
8295		helpers.each(model.title, maxLineWidth);
8296
8297		// Body width
8298		ctx.font = helpers.fontString(bodyFontSize, model._bodyFontStyle, model._bodyFontFamily);
8299		helpers.each(model.beforeBody.concat(model.afterBody), maxLineWidth);
8300
8301		// Body lines may include some extra width due to the color box
8302		widthPadding = model.displayColors ? (bodyFontSize + 2) : 0;
8303		helpers.each(body, function(bodyItem) {
8304			helpers.each(bodyItem.before, maxLineWidth);
8305			helpers.each(bodyItem.lines, maxLineWidth);
8306			helpers.each(bodyItem.after, maxLineWidth);
8307		});
8308
8309		// Reset back to 0
8310		widthPadding = 0;
8311
8312		// Footer width
8313		ctx.font = helpers.fontString(footerFontSize, model._footerFontStyle, model._footerFontFamily);
8314		helpers.each(model.footer, maxLineWidth);
8315
8316		// Add padding
8317		width += 2 * model.xPadding;
8318
8319		return {
8320			width: width,
8321			height: height
8322		};
8323	}
8324
8325	/**
8326	 * Helper to get the alignment of a tooltip given the size
8327	 */
8328	function determineAlignment(tooltip, size) {
8329		var model = tooltip._model;
8330		var chart = tooltip._chart;
8331		var chartArea = tooltip._chart.chartArea;
8332		var xAlign = 'center';
8333		var yAlign = 'center';
8334
8335		if (model.y < size.height) {
8336			yAlign = 'top';
8337		} else if (model.y > (chart.height - size.height)) {
8338			yAlign = 'bottom';
8339		}
8340
8341		var lf, rf; // functions to determine left, right alignment
8342		var olf, orf; // functions to determine if left/right alignment causes tooltip to go outside chart
8343		var yf; // function to get the y alignment if the tooltip goes outside of the left or right edges
8344		var midX = (chartArea.left + chartArea.right) / 2;
8345		var midY = (chartArea.top + chartArea.bottom) / 2;
8346
8347		if (yAlign === 'center') {
8348			lf = function(x) {
8349				return x <= midX;
8350			};
8351			rf = function(x) {
8352				return x > midX;
8353			};
8354		} else {
8355			lf = function(x) {
8356				return x <= (size.width / 2);
8357			};
8358			rf = function(x) {
8359				return x >= (chart.width - (size.width / 2));
8360			};
8361		}
8362
8363		olf = function(x) {
8364			return x + size.width + model.caretSize + model.caretPadding > chart.width;
8365		};
8366		orf = function(x) {
8367			return x - size.width - model.caretSize - model.caretPadding < 0;
8368		};
8369		yf = function(y) {
8370			return y <= midY ? 'top' : 'bottom';
8371		};
8372
8373		if (lf(model.x)) {
8374			xAlign = 'left';
8375
8376			// Is tooltip too wide and goes over the right side of the chart.?
8377			if (olf(model.x)) {
8378				xAlign = 'center';
8379				yAlign = yf(model.y);
8380			}
8381		} else if (rf(model.x)) {
8382			xAlign = 'right';
8383
8384			// Is tooltip too wide and goes outside left edge of canvas?
8385			if (orf(model.x)) {
8386				xAlign = 'center';
8387				yAlign = yf(model.y);
8388			}
8389		}
8390
8391		var opts = tooltip._options;
8392		return {
8393			xAlign: opts.xAlign ? opts.xAlign : xAlign,
8394			yAlign: opts.yAlign ? opts.yAlign : yAlign
8395		};
8396	}
8397
8398	/**
8399	 * @Helper to get the location a tooltip needs to be placed at given the initial position (via the vm) and the size and alignment
8400	 */
8401	function getBackgroundPoint(vm, size, alignment, chart) {
8402		// Background Position
8403		var x = vm.x;
8404		var y = vm.y;
8405
8406		var caretSize = vm.caretSize;
8407		var caretPadding = vm.caretPadding;
8408		var cornerRadius = vm.cornerRadius;
8409		var xAlign = alignment.xAlign;
8410		var yAlign = alignment.yAlign;
8411		var paddingAndSize = caretSize + caretPadding;
8412		var radiusAndPadding = cornerRadius + caretPadding;
8413
8414		if (xAlign === 'right') {
8415			x -= size.width;
8416		} else if (xAlign === 'center') {
8417			x -= (size.width / 2);
8418			if (x + size.width > chart.width) {
8419				x = chart.width - size.width;
8420			}
8421			if (x < 0) {
8422				x = 0;
8423			}
8424		}
8425
8426		if (yAlign === 'top') {
8427			y += paddingAndSize;
8428		} else if (yAlign === 'bottom') {
8429			y -= size.height + paddingAndSize;
8430		} else {
8431			y -= (size.height / 2);
8432		}
8433
8434		if (yAlign === 'center') {
8435			if (xAlign === 'left') {
8436				x += paddingAndSize;
8437			} else if (xAlign === 'right') {
8438				x -= paddingAndSize;
8439			}
8440		} else if (xAlign === 'left') {
8441			x -= radiusAndPadding;
8442		} else if (xAlign === 'right') {
8443			x += radiusAndPadding;
8444		}
8445
8446		return {
8447			x: x,
8448			y: y
8449		};
8450	}
8451
8452	Chart.Tooltip = Element.extend({
8453		initialize: function() {
8454			this._model = getBaseModel(this._options);
8455			this._lastActive = [];
8456		},
8457
8458		// Get the title
8459		// Args are: (tooltipItem, data)
8460		getTitle: function() {
8461			var me = this;
8462			var opts = me._options;
8463			var callbacks = opts.callbacks;
8464
8465			var beforeTitle = callbacks.beforeTitle.apply(me, arguments);
8466			var title = callbacks.title.apply(me, arguments);
8467			var afterTitle = callbacks.afterTitle.apply(me, arguments);
8468
8469			var lines = [];
8470			lines = pushOrConcat(lines, beforeTitle);
8471			lines = pushOrConcat(lines, title);
8472			lines = pushOrConcat(lines, afterTitle);
8473
8474			return lines;
8475		},
8476
8477		// Args are: (tooltipItem, data)
8478		getBeforeBody: function() {
8479			var lines = this._options.callbacks.beforeBody.apply(this, arguments);
8480			return helpers.isArray(lines) ? lines : lines !== undefined ? [lines] : [];
8481		},
8482
8483		// Args are: (tooltipItem, data)
8484		getBody: function(tooltipItems, data) {
8485			var me = this;
8486			var callbacks = me._options.callbacks;
8487			var bodyItems = [];
8488
8489			helpers.each(tooltipItems, function(tooltipItem) {
8490				var bodyItem = {
8491					before: [],
8492					lines: [],
8493					after: []
8494				};
8495				pushOrConcat(bodyItem.before, callbacks.beforeLabel.call(me, tooltipItem, data));
8496				pushOrConcat(bodyItem.lines, callbacks.label.call(me, tooltipItem, data));
8497				pushOrConcat(bodyItem.after, callbacks.afterLabel.call(me, tooltipItem, data));
8498
8499				bodyItems.push(bodyItem);
8500			});
8501
8502			return bodyItems;
8503		},
8504
8505		// Args are: (tooltipItem, data)
8506		getAfterBody: function() {
8507			var lines = this._options.callbacks.afterBody.apply(this, arguments);
8508			return helpers.isArray(lines) ? lines : lines !== undefined ? [lines] : [];
8509		},
8510
8511		// Get the footer and beforeFooter and afterFooter lines
8512		// Args are: (tooltipItem, data)
8513		getFooter: function() {
8514			var me = this;
8515			var callbacks = me._options.callbacks;
8516
8517			var beforeFooter = callbacks.beforeFooter.apply(me, arguments);
8518			var footer = callbacks.footer.apply(me, arguments);
8519			var afterFooter = callbacks.afterFooter.apply(me, arguments);
8520
8521			var lines = [];
8522			lines = pushOrConcat(lines, beforeFooter);
8523			lines = pushOrConcat(lines, footer);
8524			lines = pushOrConcat(lines, afterFooter);
8525
8526			return lines;
8527		},
8528
8529		update: function(changed) {
8530			var me = this;
8531			var opts = me._options;
8532
8533			// Need to regenerate the model because its faster than using extend and it is necessary due to the optimization in Chart.Element.transition
8534			// 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
8535			// which breaks any animations.
8536			var existingModel = me._model;
8537			var model = me._model = getBaseModel(opts);
8538			var active = me._active;
8539
8540			var data = me._data;
8541
8542			// In the case where active.length === 0 we need to keep these at existing values for good animations
8543			var alignment = {
8544				xAlign: existingModel.xAlign,
8545				yAlign: existingModel.yAlign
8546			};
8547			var backgroundPoint = {
8548				x: existingModel.x,
8549				y: existingModel.y
8550			};
8551			var tooltipSize = {
8552				width: existingModel.width,
8553				height: existingModel.height
8554			};
8555			var tooltipPosition = {
8556				x: existingModel.caretX,
8557				y: existingModel.caretY
8558			};
8559
8560			var i, len;
8561
8562			if (active.length) {
8563				model.opacity = 1;
8564
8565				var labelColors = [];
8566				var labelTextColors = [];
8567				tooltipPosition = Chart.Tooltip.positioners[opts.position].call(me, active, me._eventPosition);
8568
8569				var tooltipItems = [];
8570				for (i = 0, len = active.length; i < len; ++i) {
8571					tooltipItems.push(createTooltipItem(active[i]));
8572				}
8573
8574				// If the user provided a filter function, use it to modify the tooltip items
8575				if (opts.filter) {
8576					tooltipItems = tooltipItems.filter(function(a) {
8577						return opts.filter(a, data);
8578					});
8579				}
8580
8581				// If the user provided a sorting function, use it to modify the tooltip items
8582				if (opts.itemSort) {
8583					tooltipItems = tooltipItems.sort(function(a, b) {
8584						return opts.itemSort(a, b, data);
8585					});
8586				}
8587
8588				// Determine colors for boxes
8589				helpers.each(tooltipItems, function(tooltipItem) {
8590					labelColors.push(opts.callbacks.labelColor.call(me, tooltipItem, me._chart));
8591					labelTextColors.push(opts.callbacks.labelTextColor.call(me, tooltipItem, me._chart));
8592				});
8593
8594
8595				// Build the Text Lines
8596				model.title = me.getTitle(tooltipItems, data);
8597				model.beforeBody = me.getBeforeBody(tooltipItems, data);
8598				model.body = me.getBody(tooltipItems, data);
8599				model.afterBody = me.getAfterBody(tooltipItems, data);
8600				model.footer = me.getFooter(tooltipItems, data);
8601
8602				// Initial positioning and colors
8603				model.x = Math.round(tooltipPosition.x);
8604				model.y = Math.round(tooltipPosition.y);
8605				model.caretPadding = opts.caretPadding;
8606				model.labelColors = labelColors;
8607				model.labelTextColors = labelTextColors;
8608
8609				// data points
8610				model.dataPoints = tooltipItems;
8611
8612				// We need to determine alignment of the tooltip
8613				tooltipSize = getTooltipSize(this, model);
8614				alignment = determineAlignment(this, tooltipSize);
8615				// Final Size and Position
8616				backgroundPoint = getBackgroundPoint(model, tooltipSize, alignment, me._chart);
8617			} else {
8618				model.opacity = 0;
8619			}
8620
8621			model.xAlign = alignment.xAlign;
8622			model.yAlign = alignment.yAlign;
8623			model.x = backgroundPoint.x;
8624			model.y = backgroundPoint.y;
8625			model.width = tooltipSize.width;
8626			model.height = tooltipSize.height;
8627
8628			// Point where the caret on the tooltip points to
8629			model.caretX = tooltipPosition.x;
8630			model.caretY = tooltipPosition.y;
8631
8632			me._model = model;
8633
8634			if (changed && opts.custom) {
8635				opts.custom.call(me, model);
8636			}
8637
8638			return me;
8639		},
8640		drawCaret: function(tooltipPoint, size) {
8641			var ctx = this._chart.ctx;
8642			var vm = this._view;
8643			var caretPosition = this.getCaretPosition(tooltipPoint, size, vm);
8644
8645			ctx.lineTo(caretPosition.x1, caretPosition.y1);
8646			ctx.lineTo(caretPosition.x2, caretPosition.y2);
8647			ctx.lineTo(caretPosition.x3, caretPosition.y3);
8648		},
8649		getCaretPosition: function(tooltipPoint, size, vm) {
8650			var x1, x2, x3, y1, y2, y3;
8651			var caretSize = vm.caretSize;
8652			var cornerRadius = vm.cornerRadius;
8653			var xAlign = vm.xAlign;
8654			var yAlign = vm.yAlign;
8655			var ptX = tooltipPoint.x;
8656			var ptY = tooltipPoint.y;
8657			var width = size.width;
8658			var height = size.height;
8659
8660			if (yAlign === 'center') {
8661				y2 = ptY + (height / 2);
8662
8663				if (xAlign === 'left') {
8664					x1 = ptX;
8665					x2 = x1 - caretSize;
8666					x3 = x1;
8667
8668					y1 = y2 + caretSize;
8669					y3 = y2 - caretSize;
8670				} else {
8671					x1 = ptX + width;
8672					x2 = x1 + caretSize;
8673					x3 = x1;
8674
8675					y1 = y2 - caretSize;
8676					y3 = y2 + caretSize;
8677				}
8678			} else {
8679				if (xAlign === 'left') {
8680					x2 = ptX + cornerRadius + (caretSize);
8681					x1 = x2 - caretSize;
8682					x3 = x2 + caretSize;
8683				} else if (xAlign === 'right') {
8684					x2 = ptX + width - cornerRadius - caretSize;
8685					x1 = x2 - caretSize;
8686					x3 = x2 + caretSize;
8687				} else {
8688					x2 = vm.caretX;
8689					x1 = x2 - caretSize;
8690					x3 = x2 + caretSize;
8691				}
8692				if (yAlign === 'top') {
8693					y1 = ptY;
8694					y2 = y1 - caretSize;
8695					y3 = y1;
8696				} else {
8697					y1 = ptY + height;
8698					y2 = y1 + caretSize;
8699					y3 = y1;
8700					// invert drawing order
8701					var tmp = x3;
8702					x3 = x1;
8703					x1 = tmp;
8704				}
8705			}
8706			return {x1: x1, x2: x2, x3: x3, y1: y1, y2: y2, y3: y3};
8707		},
8708		drawTitle: function(pt, vm, ctx, opacity) {
8709			var title = vm.title;
8710
8711			if (title.length) {
8712				ctx.textAlign = vm._titleAlign;
8713				ctx.textBaseline = 'top';
8714
8715				var titleFontSize = vm.titleFontSize;
8716				var titleSpacing = vm.titleSpacing;
8717
8718				ctx.fillStyle = mergeOpacity(vm.titleFontColor, opacity);
8719				ctx.font = helpers.fontString(titleFontSize, vm._titleFontStyle, vm._titleFontFamily);
8720
8721				var i, len;
8722				for (i = 0, len = title.length; i < len; ++i) {
8723					ctx.fillText(title[i], pt.x, pt.y);
8724					pt.y += titleFontSize + titleSpacing; // Line Height and spacing
8725
8726					if (i + 1 === title.length) {
8727						pt.y += vm.titleMarginBottom - titleSpacing; // If Last, add margin, remove spacing
8728					}
8729				}
8730			}
8731		},
8732		drawBody: function(pt, vm, ctx, opacity) {
8733			var bodyFontSize = vm.bodyFontSize;
8734			var bodySpacing = vm.bodySpacing;
8735			var body = vm.body;
8736
8737			ctx.textAlign = vm._bodyAlign;
8738			ctx.textBaseline = 'top';
8739			ctx.font = helpers.fontString(bodyFontSize, vm._bodyFontStyle, vm._bodyFontFamily);
8740
8741			// Before Body
8742			var xLinePadding = 0;
8743			var fillLineOfText = function(line) {
8744				ctx.fillText(line, pt.x + xLinePadding, pt.y);
8745				pt.y += bodyFontSize + bodySpacing;
8746			};
8747
8748			// Before body lines
8749			ctx.fillStyle = mergeOpacity(vm.bodyFontColor, opacity);
8750			helpers.each(vm.beforeBody, fillLineOfText);
8751
8752			var drawColorBoxes = vm.displayColors;
8753			xLinePadding = drawColorBoxes ? (bodyFontSize + 2) : 0;
8754
8755			// Draw body lines now
8756			helpers.each(body, function(bodyItem, i) {
8757				var textColor = mergeOpacity(vm.labelTextColors[i], opacity);
8758				ctx.fillStyle = textColor;
8759				helpers.each(bodyItem.before, fillLineOfText);
8760
8761				helpers.each(bodyItem.lines, function(line) {
8762					// Draw Legend-like boxes if needed
8763					if (drawColorBoxes) {
8764						// Fill a white rect so that colours merge nicely if the opacity is < 1
8765						ctx.fillStyle = mergeOpacity(vm.legendColorBackground, opacity);
8766						ctx.fillRect(pt.x, pt.y, bodyFontSize, bodyFontSize);
8767
8768						// Border
8769						ctx.lineWidth = 1;
8770						ctx.strokeStyle = mergeOpacity(vm.labelColors[i].borderColor, opacity);
8771						ctx.strokeRect(pt.x, pt.y, bodyFontSize, bodyFontSize);
8772
8773						// Inner square
8774						ctx.fillStyle = mergeOpacity(vm.labelColors[i].backgroundColor, opacity);
8775						ctx.fillRect(pt.x + 1, pt.y + 1, bodyFontSize - 2, bodyFontSize - 2);
8776						ctx.fillStyle = textColor;
8777					}
8778
8779					fillLineOfText(line);
8780				});
8781
8782				helpers.each(bodyItem.after, fillLineOfText);
8783			});
8784
8785			// Reset back to 0 for after body
8786			xLinePadding = 0;
8787
8788			// After body lines
8789			helpers.each(vm.afterBody, fillLineOfText);
8790			pt.y -= bodySpacing; // Remove last body spacing
8791		},
8792		drawFooter: function(pt, vm, ctx, opacity) {
8793			var footer = vm.footer;
8794
8795			if (footer.length) {
8796				pt.y += vm.footerMarginTop;
8797
8798				ctx.textAlign = vm._footerAlign;
8799				ctx.textBaseline = 'top';
8800
8801				ctx.fillStyle = mergeOpacity(vm.footerFontColor, opacity);
8802				ctx.font = helpers.fontString(vm.footerFontSize, vm._footerFontStyle, vm._footerFontFamily);
8803
8804				helpers.each(footer, function(line) {
8805					ctx.fillText(line, pt.x, pt.y);
8806					pt.y += vm.footerFontSize + vm.footerSpacing;
8807				});
8808			}
8809		},
8810		drawBackground: function(pt, vm, ctx, tooltipSize, opacity) {
8811			ctx.fillStyle = mergeOpacity(vm.backgroundColor, opacity);
8812			ctx.strokeStyle = mergeOpacity(vm.borderColor, opacity);
8813			ctx.lineWidth = vm.borderWidth;
8814			var xAlign = vm.xAlign;
8815			var yAlign = vm.yAlign;
8816			var x = pt.x;
8817			var y = pt.y;
8818			var width = tooltipSize.width;
8819			var height = tooltipSize.height;
8820			var radius = vm.cornerRadius;
8821
8822			ctx.beginPath();
8823			ctx.moveTo(x + radius, y);
8824			if (yAlign === 'top') {
8825				this.drawCaret(pt, tooltipSize);
8826			}
8827			ctx.lineTo(x + width - radius, y);
8828			ctx.quadraticCurveTo(x + width, y, x + width, y + radius);
8829			if (yAlign === 'center' && xAlign === 'right') {
8830				this.drawCaret(pt, tooltipSize);
8831			}
8832			ctx.lineTo(x + width, y + height - radius);
8833			ctx.quadraticCurveTo(x + width, y + height, x + width - radius, y + height);
8834			if (yAlign === 'bottom') {
8835				this.drawCaret(pt, tooltipSize);
8836			}
8837			ctx.lineTo(x + radius, y + height);
8838			ctx.quadraticCurveTo(x, y + height, x, y + height - radius);
8839			if (yAlign === 'center' && xAlign === 'left') {
8840				this.drawCaret(pt, tooltipSize);
8841			}
8842			ctx.lineTo(x, y + radius);
8843			ctx.quadraticCurveTo(x, y, x + radius, y);
8844			ctx.closePath();
8845
8846			ctx.fill();
8847
8848			if (vm.borderWidth > 0) {
8849				ctx.stroke();
8850			}
8851		},
8852		draw: function() {
8853			var ctx = this._chart.ctx;
8854			var vm = this._view;
8855
8856			if (vm.opacity === 0) {
8857				return;
8858			}
8859
8860			var tooltipSize = {
8861				width: vm.width,
8862				height: vm.height
8863			};
8864			var pt = {
8865				x: vm.x,
8866				y: vm.y
8867			};
8868
8869			// IE11/Edge does not like very small opacities, so snap to 0
8870			var opacity = Math.abs(vm.opacity < 1e-3) ? 0 : vm.opacity;
8871
8872			// Truthy/falsey value for empty tooltip
8873			var hasTooltipContent = vm.title.length || vm.beforeBody.length || vm.body.length || vm.afterBody.length || vm.footer.length;
8874
8875			if (this._options.enabled && hasTooltipContent) {
8876				// Draw Background
8877				this.drawBackground(pt, vm, ctx, tooltipSize, opacity);
8878
8879				// Draw Title, Body, and Footer
8880				pt.x += vm.xPadding;
8881				pt.y += vm.yPadding;
8882
8883				// Titles
8884				this.drawTitle(pt, vm, ctx, opacity);
8885
8886				// Body
8887				this.drawBody(pt, vm, ctx, opacity);
8888
8889				// Footer
8890				this.drawFooter(pt, vm, ctx, opacity);
8891			}
8892		},
8893
8894		/**
8895		 * Handle an event
8896		 * @private
8897		 * @param {IEvent} event - The event to handle
8898		 * @returns {Boolean} true if the tooltip changed
8899		 */
8900		handleEvent: function(e) {
8901			var me = this;
8902			var options = me._options;
8903			var changed = false;
8904
8905			me._lastActive = me._lastActive || [];
8906
8907			// Find Active Elements for tooltips
8908			if (e.type === 'mouseout') {
8909				me._active = [];
8910			} else {
8911				me._active = me._chart.getElementsAtEventForMode(e, options.mode, options);
8912			}
8913
8914			// Remember Last Actives
8915			changed = !helpers.arrayEquals(me._active, me._lastActive);
8916
8917			// Only handle target event on tooltip change
8918			if (changed) {
8919				me._lastActive = me._active;
8920
8921				if (options.enabled || options.custom) {
8922					me._eventPosition = {
8923						x: e.x,
8924						y: e.y
8925					};
8926
8927					me.update(true);
8928					me.pivot();
8929				}
8930			}
8931
8932			return changed;
8933		}
8934	});
8935
8936	/**
8937	 * @namespace Chart.Tooltip.positioners
8938	 */
8939	Chart.Tooltip.positioners = {
8940		/**
8941		 * Average mode places the tooltip at the average position of the elements shown
8942		 * @function Chart.Tooltip.positioners.average
8943		 * @param elements {ChartElement[]} the elements being displayed in the tooltip
8944		 * @returns {Point} tooltip position
8945		 */
8946		average: function(elements) {
8947			if (!elements.length) {
8948				return false;
8949			}
8950
8951			var i, len;
8952			var x = 0;
8953			var y = 0;
8954			var count = 0;
8955
8956			for (i = 0, len = elements.length; i < len; ++i) {
8957				var el = elements[i];
8958				if (el && el.hasValue()) {
8959					var pos = el.tooltipPosition();
8960					x += pos.x;
8961					y += pos.y;
8962					++count;
8963				}
8964			}
8965
8966			return {
8967				x: Math.round(x / count),
8968				y: Math.round(y / count)
8969			};
8970		},
8971
8972		/**
8973		 * Gets the tooltip position nearest of the item nearest to the event position
8974		 * @function Chart.Tooltip.positioners.nearest
8975		 * @param elements {Chart.Element[]} the tooltip elements
8976		 * @param eventPosition {Point} the position of the event in canvas coordinates
8977		 * @returns {Point} the tooltip position
8978		 */
8979		nearest: function(elements, eventPosition) {
8980			var x = eventPosition.x;
8981			var y = eventPosition.y;
8982			var minDistance = Number.POSITIVE_INFINITY;
8983			var i, len, nearestElement;
8984
8985			for (i = 0, len = elements.length; i < len; ++i) {
8986				var el = elements[i];
8987				if (el && el.hasValue()) {
8988					var center = el.getCenterPoint();
8989					var d = helpers.distanceBetweenPoints(eventPosition, center);
8990
8991					if (d < minDistance) {
8992						minDistance = d;
8993						nearestElement = el;
8994					}
8995				}
8996			}
8997
8998			if (nearestElement) {
8999				var tp = nearestElement.tooltipPosition();
9000				x = tp.x;
9001				y = tp.y;
9002			}
9003
9004			return {
9005				x: x,
9006				y: y
9007			};
9008		}
9009	};
9010};
9011
9012},{"25":25,"26":26,"45":45}],36:[function(require,module,exports){
9013'use strict';
9014
9015var defaults = require(25);
9016var Element = require(26);
9017var helpers = require(45);
9018
9019defaults._set('global', {
9020	elements: {
9021		arc: {
9022			backgroundColor: defaults.global.defaultColor,
9023			borderColor: '#fff',
9024			borderWidth: 2
9025		}
9026	}
9027});
9028
9029module.exports = Element.extend({
9030	inLabelRange: function(mouseX) {
9031		var vm = this._view;
9032
9033		if (vm) {
9034			return (Math.pow(mouseX - vm.x, 2) < Math.pow(vm.radius + vm.hoverRadius, 2));
9035		}
9036		return false;
9037	},
9038
9039	inRange: function(chartX, chartY) {
9040		var vm = this._view;
9041
9042		if (vm) {
9043			var pointRelativePosition = helpers.getAngleFromPoint(vm, {x: chartX, y: chartY});
9044			var	angle = pointRelativePosition.angle;
9045			var distance = pointRelativePosition.distance;
9046
9047			// Sanitise angle range
9048			var startAngle = vm.startAngle;
9049			var endAngle = vm.endAngle;
9050			while (endAngle < startAngle) {
9051				endAngle += 2.0 * Math.PI;
9052			}
9053			while (angle > endAngle) {
9054				angle -= 2.0 * Math.PI;
9055			}
9056			while (angle < startAngle) {
9057				angle += 2.0 * Math.PI;
9058			}
9059
9060			// Check if within the range of the open/close angle
9061			var betweenAngles = (angle >= startAngle && angle <= endAngle);
9062			var withinRadius = (distance >= vm.innerRadius && distance <= vm.outerRadius);
9063
9064			return (betweenAngles && withinRadius);
9065		}
9066		return false;
9067	},
9068
9069	getCenterPoint: function() {
9070		var vm = this._view;
9071		var halfAngle = (vm.startAngle + vm.endAngle) / 2;
9072		var halfRadius = (vm.innerRadius + vm.outerRadius) / 2;
9073		return {
9074			x: vm.x + Math.cos(halfAngle) * halfRadius,
9075			y: vm.y + Math.sin(halfAngle) * halfRadius
9076		};
9077	},
9078
9079	getArea: function() {
9080		var vm = this._view;
9081		return Math.PI * ((vm.endAngle - vm.startAngle) / (2 * Math.PI)) * (Math.pow(vm.outerRadius, 2) - Math.pow(vm.innerRadius, 2));
9082	},
9083
9084	tooltipPosition: function() {
9085		var vm = this._view;
9086		var centreAngle = vm.startAngle + ((vm.endAngle - vm.startAngle) / 2);
9087		var rangeFromCentre = (vm.outerRadius - vm.innerRadius) / 2 + vm.innerRadius;
9088
9089		return {
9090			x: vm.x + (Math.cos(centreAngle) * rangeFromCentre),
9091			y: vm.y + (Math.sin(centreAngle) * rangeFromCentre)
9092		};
9093	},
9094
9095	draw: function() {
9096		var ctx = this._chart.ctx;
9097		var vm = this._view;
9098		var sA = vm.startAngle;
9099		var eA = vm.endAngle;
9100
9101		ctx.beginPath();
9102
9103		ctx.arc(vm.x, vm.y, vm.outerRadius, sA, eA);
9104		ctx.arc(vm.x, vm.y, vm.innerRadius, eA, sA, true);
9105
9106		ctx.closePath();
9107		ctx.strokeStyle = vm.borderColor;
9108		ctx.lineWidth = vm.borderWidth;
9109
9110		ctx.fillStyle = vm.backgroundColor;
9111
9112		ctx.fill();
9113		ctx.lineJoin = 'bevel';
9114
9115		if (vm.borderWidth) {
9116			ctx.stroke();
9117		}
9118	}
9119});
9120
9121},{"25":25,"26":26,"45":45}],37:[function(require,module,exports){
9122'use strict';
9123
9124var defaults = require(25);
9125var Element = require(26);
9126var helpers = require(45);
9127
9128var globalDefaults = defaults.global;
9129
9130defaults._set('global', {
9131	elements: {
9132		line: {
9133			tension: 0.4,
9134			backgroundColor: globalDefaults.defaultColor,
9135			borderWidth: 3,
9136			borderColor: globalDefaults.defaultColor,
9137			borderCapStyle: 'butt',
9138			borderDash: [],
9139			borderDashOffset: 0.0,
9140			borderJoinStyle: 'miter',
9141			capBezierPoints: true,
9142			fill: true, // do we fill in the area between the line and its base axis
9143		}
9144	}
9145});
9146
9147module.exports = Element.extend({
9148	draw: function() {
9149		var me = this;
9150		var vm = me._view;
9151		var ctx = me._chart.ctx;
9152		var spanGaps = vm.spanGaps;
9153		var points = me._children.slice(); // clone array
9154		var globalOptionLineElements = globalDefaults.elements.line;
9155		var lastDrawnIndex = -1;
9156		var index, current, previous, currentVM;
9157
9158		// If we are looping, adding the first point again
9159		if (me._loop && points.length) {
9160			points.push(points[0]);
9161		}
9162
9163		ctx.save();
9164
9165		// Stroke Line Options
9166		ctx.lineCap = vm.borderCapStyle || globalOptionLineElements.borderCapStyle;
9167
9168		// IE 9 and 10 do not support line dash
9169		if (ctx.setLineDash) {
9170			ctx.setLineDash(vm.borderDash || globalOptionLineElements.borderDash);
9171		}
9172
9173		ctx.lineDashOffset = vm.borderDashOffset || globalOptionLineElements.borderDashOffset;
9174		ctx.lineJoin = vm.borderJoinStyle || globalOptionLineElements.borderJoinStyle;
9175		ctx.lineWidth = vm.borderWidth || globalOptionLineElements.borderWidth;
9176		ctx.strokeStyle = vm.borderColor || globalDefaults.defaultColor;
9177
9178		// Stroke Line
9179		ctx.beginPath();
9180		lastDrawnIndex = -1;
9181
9182		for (index = 0; index < points.length; ++index) {
9183			current = points[index];
9184			previous = helpers.previousItem(points, index);
9185			currentVM = current._view;
9186
9187			// First point moves to it's starting position no matter what
9188			if (index === 0) {
9189				if (!currentVM.skip) {
9190					ctx.moveTo(currentVM.x, currentVM.y);
9191					lastDrawnIndex = index;
9192				}
9193			} else {
9194				previous = lastDrawnIndex === -1 ? previous : points[lastDrawnIndex];
9195
9196				if (!currentVM.skip) {
9197					if ((lastDrawnIndex !== (index - 1) && !spanGaps) || lastDrawnIndex === -1) {
9198						// There was a gap and this is the first point after the gap
9199						ctx.moveTo(currentVM.x, currentVM.y);
9200					} else {
9201						// Line to next point
9202						helpers.canvas.lineTo(ctx, previous._view, current._view);
9203					}
9204					lastDrawnIndex = index;
9205				}
9206			}
9207		}
9208
9209		ctx.stroke();
9210		ctx.restore();
9211	}
9212});
9213
9214},{"25":25,"26":26,"45":45}],38:[function(require,module,exports){
9215'use strict';
9216
9217var defaults = require(25);
9218var Element = require(26);
9219var helpers = require(45);
9220
9221var defaultColor = defaults.global.defaultColor;
9222
9223defaults._set('global', {
9224	elements: {
9225		point: {
9226			radius: 3,
9227			pointStyle: 'circle',
9228			backgroundColor: defaultColor,
9229			borderColor: defaultColor,
9230			borderWidth: 1,
9231			// Hover
9232			hitRadius: 1,
9233			hoverRadius: 4,
9234			hoverBorderWidth: 1
9235		}
9236	}
9237});
9238
9239function xRange(mouseX) {
9240	var vm = this._view;
9241	return vm ? (Math.abs(mouseX - vm.x) < vm.radius + vm.hitRadius) : false;
9242}
9243
9244function yRange(mouseY) {
9245	var vm = this._view;
9246	return vm ? (Math.abs(mouseY - vm.y) < vm.radius + vm.hitRadius) : false;
9247}
9248
9249module.exports = Element.extend({
9250	inRange: function(mouseX, mouseY) {
9251		var vm = this._view;
9252		return vm ? ((Math.pow(mouseX - vm.x, 2) + Math.pow(mouseY - vm.y, 2)) < Math.pow(vm.hitRadius + vm.radius, 2)) : false;
9253	},
9254
9255	inLabelRange: xRange,
9256	inXRange: xRange,
9257	inYRange: yRange,
9258
9259	getCenterPoint: function() {
9260		var vm = this._view;
9261		return {
9262			x: vm.x,
9263			y: vm.y
9264		};
9265	},
9266
9267	getArea: function() {
9268		return Math.PI * Math.pow(this._view.radius, 2);
9269	},
9270
9271	tooltipPosition: function() {
9272		var vm = this._view;
9273		return {
9274			x: vm.x,
9275			y: vm.y,
9276			padding: vm.radius + vm.borderWidth
9277		};
9278	},
9279
9280	draw: function(chartArea) {
9281		var vm = this._view;
9282		var model = this._model;
9283		var ctx = this._chart.ctx;
9284		var pointStyle = vm.pointStyle;
9285		var radius = vm.radius;
9286		var x = vm.x;
9287		var y = vm.y;
9288		var color = helpers.color;
9289		var errMargin = 1.01; // 1.01 is margin for Accumulated error. (Especially Edge, IE.)
9290		var ratio = 0;
9291
9292		if (vm.skip) {
9293			return;
9294		}
9295
9296		ctx.strokeStyle = vm.borderColor || defaultColor;
9297		ctx.lineWidth = helpers.valueOrDefault(vm.borderWidth, defaults.global.elements.point.borderWidth);
9298		ctx.fillStyle = vm.backgroundColor || defaultColor;
9299
9300		// Cliping for Points.
9301		// going out from inner charArea?
9302		if ((chartArea !== undefined) && ((model.x < chartArea.left) || (chartArea.right * errMargin < model.x) || (model.y < chartArea.top) || (chartArea.bottom * errMargin < model.y))) {
9303			// Point fade out
9304			if (model.x < chartArea.left) {
9305				ratio = (x - model.x) / (chartArea.left - model.x);
9306			} else if (chartArea.right * errMargin < model.x) {
9307				ratio = (model.x - x) / (model.x - chartArea.right);
9308			} else if (model.y < chartArea.top) {
9309				ratio = (y - model.y) / (chartArea.top - model.y);
9310			} else if (chartArea.bottom * errMargin < model.y) {
9311				ratio = (model.y - y) / (model.y - chartArea.bottom);
9312			}
9313			ratio = Math.round(ratio * 100) / 100;
9314			ctx.strokeStyle = color(ctx.strokeStyle).alpha(ratio).rgbString();
9315			ctx.fillStyle = color(ctx.fillStyle).alpha(ratio).rgbString();
9316		}
9317
9318		helpers.canvas.drawPoint(ctx, pointStyle, radius, x, y);
9319	}
9320});
9321
9322},{"25":25,"26":26,"45":45}],39:[function(require,module,exports){
9323'use strict';
9324
9325var defaults = require(25);
9326var Element = require(26);
9327
9328defaults._set('global', {
9329	elements: {
9330		rectangle: {
9331			backgroundColor: defaults.global.defaultColor,
9332			borderColor: defaults.global.defaultColor,
9333			borderSkipped: 'bottom',
9334			borderWidth: 0
9335		}
9336	}
9337});
9338
9339function isVertical(bar) {
9340	return bar._view.width !== undefined;
9341}
9342
9343/**
9344 * Helper function to get the bounds of the bar regardless of the orientation
9345 * @param bar {Chart.Element.Rectangle} the bar
9346 * @return {Bounds} bounds of the bar
9347 * @private
9348 */
9349function getBarBounds(bar) {
9350	var vm = bar._view;
9351	var x1, x2, y1, y2;
9352
9353	if (isVertical(bar)) {
9354		// vertical
9355		var halfWidth = vm.width / 2;
9356		x1 = vm.x - halfWidth;
9357		x2 = vm.x + halfWidth;
9358		y1 = Math.min(vm.y, vm.base);
9359		y2 = Math.max(vm.y, vm.base);
9360	} else {
9361		// horizontal bar
9362		var halfHeight = vm.height / 2;
9363		x1 = Math.min(vm.x, vm.base);
9364		x2 = Math.max(vm.x, vm.base);
9365		y1 = vm.y - halfHeight;
9366		y2 = vm.y + halfHeight;
9367	}
9368
9369	return {
9370		left: x1,
9371		top: y1,
9372		right: x2,
9373		bottom: y2
9374	};
9375}
9376
9377module.exports = Element.extend({
9378	draw: function() {
9379		var ctx = this._chart.ctx;
9380		var vm = this._view;
9381		var left, right, top, bottom, signX, signY, borderSkipped;
9382		var borderWidth = vm.borderWidth;
9383
9384		if (!vm.horizontal) {
9385			// bar
9386			left = vm.x - vm.width / 2;
9387			right = vm.x + vm.width / 2;
9388			top = vm.y;
9389			bottom = vm.base;
9390			signX = 1;
9391			signY = bottom > top ? 1 : -1;
9392			borderSkipped = vm.borderSkipped || 'bottom';
9393		} else {
9394			// horizontal bar
9395			left = vm.base;
9396			right = vm.x;
9397			top = vm.y - vm.height / 2;
9398			bottom = vm.y + vm.height / 2;
9399			signX = right > left ? 1 : -1;
9400			signY = 1;
9401			borderSkipped = vm.borderSkipped || 'left';
9402		}
9403
9404		// Canvas doesn't allow us to stroke inside the width so we can
9405		// adjust the sizes to fit if we're setting a stroke on the line
9406		if (borderWidth) {
9407			// borderWidth shold be less than bar width and bar height.
9408			var barSize = Math.min(Math.abs(left - right), Math.abs(top - bottom));
9409			borderWidth = borderWidth > barSize ? barSize : borderWidth;
9410			var halfStroke = borderWidth / 2;
9411			// Adjust borderWidth when bar top position is near vm.base(zero).
9412			var borderLeft = left + (borderSkipped !== 'left' ? halfStroke * signX : 0);
9413			var borderRight = right + (borderSkipped !== 'right' ? -halfStroke * signX : 0);
9414			var borderTop = top + (borderSkipped !== 'top' ? halfStroke * signY : 0);
9415			var borderBottom = bottom + (borderSkipped !== 'bottom' ? -halfStroke * signY : 0);
9416			// not become a vertical line?
9417			if (borderLeft !== borderRight) {
9418				top = borderTop;
9419				bottom = borderBottom;
9420			}
9421			// not become a horizontal line?
9422			if (borderTop !== borderBottom) {
9423				left = borderLeft;
9424				right = borderRight;
9425			}
9426		}
9427
9428		ctx.beginPath();
9429		ctx.fillStyle = vm.backgroundColor;
9430		ctx.strokeStyle = vm.borderColor;
9431		ctx.lineWidth = borderWidth;
9432
9433		// Corner points, from bottom-left to bottom-right clockwise
9434		// | 1 2 |
9435		// | 0 3 |
9436		var corners = [
9437			[left, bottom],
9438			[left, top],
9439			[right, top],
9440			[right, bottom]
9441		];
9442
9443		// Find first (starting) corner with fallback to 'bottom'
9444		var borders = ['bottom', 'left', 'top', 'right'];
9445		var startCorner = borders.indexOf(borderSkipped, 0);
9446		if (startCorner === -1) {
9447			startCorner = 0;
9448		}
9449
9450		function cornerAt(index) {
9451			return corners[(startCorner + index) % 4];
9452		}
9453
9454		// Draw rectangle from 'startCorner'
9455		var corner = cornerAt(0);
9456		ctx.moveTo(corner[0], corner[1]);
9457
9458		for (var i = 1; i < 4; i++) {
9459			corner = cornerAt(i);
9460			ctx.lineTo(corner[0], corner[1]);
9461		}
9462
9463		ctx.fill();
9464		if (borderWidth) {
9465			ctx.stroke();
9466		}
9467	},
9468
9469	height: function() {
9470		var vm = this._view;
9471		return vm.base - vm.y;
9472	},
9473
9474	inRange: function(mouseX, mouseY) {
9475		var inRange = false;
9476
9477		if (this._view) {
9478			var bounds = getBarBounds(this);
9479			inRange = mouseX >= bounds.left && mouseX <= bounds.right && mouseY >= bounds.top && mouseY <= bounds.bottom;
9480		}
9481
9482		return inRange;
9483	},
9484
9485	inLabelRange: function(mouseX, mouseY) {
9486		var me = this;
9487		if (!me._view) {
9488			return false;
9489		}
9490
9491		var inRange = false;
9492		var bounds = getBarBounds(me);
9493
9494		if (isVertical(me)) {
9495			inRange = mouseX >= bounds.left && mouseX <= bounds.right;
9496		} else {
9497			inRange = mouseY >= bounds.top && mouseY <= bounds.bottom;
9498		}
9499
9500		return inRange;
9501	},
9502
9503	inXRange: function(mouseX) {
9504		var bounds = getBarBounds(this);
9505		return mouseX >= bounds.left && mouseX <= bounds.right;
9506	},
9507
9508	inYRange: function(mouseY) {
9509		var bounds = getBarBounds(this);
9510		return mouseY >= bounds.top && mouseY <= bounds.bottom;
9511	},
9512
9513	getCenterPoint: function() {
9514		var vm = this._view;
9515		var x, y;
9516		if (isVertical(this)) {
9517			x = vm.x;
9518			y = (vm.y + vm.base) / 2;
9519		} else {
9520			x = (vm.x + vm.base) / 2;
9521			y = vm.y;
9522		}
9523
9524		return {x: x, y: y};
9525	},
9526
9527	getArea: function() {
9528		var vm = this._view;
9529		return vm.width * Math.abs(vm.y - vm.base);
9530	},
9531
9532	tooltipPosition: function() {
9533		var vm = this._view;
9534		return {
9535			x: vm.x,
9536			y: vm.y
9537		};
9538	}
9539});
9540
9541},{"25":25,"26":26}],40:[function(require,module,exports){
9542'use strict';
9543
9544module.exports = {};
9545module.exports.Arc = require(36);
9546module.exports.Line = require(37);
9547module.exports.Point = require(38);
9548module.exports.Rectangle = require(39);
9549
9550},{"36":36,"37":37,"38":38,"39":39}],41:[function(require,module,exports){
9551'use strict';
9552
9553var helpers = require(42);
9554
9555/**
9556 * @namespace Chart.helpers.canvas
9557 */
9558var exports = module.exports = {
9559	/**
9560	 * Clears the entire canvas associated to the given `chart`.
9561	 * @param {Chart} chart - The chart for which to clear the canvas.
9562	 */
9563	clear: function(chart) {
9564		chart.ctx.clearRect(0, 0, chart.width, chart.height);
9565	},
9566
9567	/**
9568	 * Creates a "path" for a rectangle with rounded corners at position (x, y) with a
9569	 * given size (width, height) and the same `radius` for all corners.
9570	 * @param {CanvasRenderingContext2D} ctx - The canvas 2D Context.
9571	 * @param {Number} x - The x axis of the coordinate for the rectangle starting point.
9572	 * @param {Number} y - The y axis of the coordinate for the rectangle starting point.
9573	 * @param {Number} width - The rectangle's width.
9574	 * @param {Number} height - The rectangle's height.
9575	 * @param {Number} radius - The rounded amount (in pixels) for the four corners.
9576	 * @todo handle `radius` as top-left, top-right, bottom-right, bottom-left array/object?
9577	 */
9578	roundedRect: function(ctx, x, y, width, height, radius) {
9579		if (radius) {
9580			var rx = Math.min(radius, width / 2);
9581			var ry = Math.min(radius, height / 2);
9582
9583			ctx.moveTo(x + rx, y);
9584			ctx.lineTo(x + width - rx, y);
9585			ctx.quadraticCurveTo(x + width, y, x + width, y + ry);
9586			ctx.lineTo(x + width, y + height - ry);
9587			ctx.quadraticCurveTo(x + width, y + height, x + width - rx, y + height);
9588			ctx.lineTo(x + rx, y + height);
9589			ctx.quadraticCurveTo(x, y + height, x, y + height - ry);
9590			ctx.lineTo(x, y + ry);
9591			ctx.quadraticCurveTo(x, y, x + rx, y);
9592		} else {
9593			ctx.rect(x, y, width, height);
9594		}
9595	},
9596
9597	drawPoint: function(ctx, style, radius, x, y) {
9598		var type, edgeLength, xOffset, yOffset, height, size;
9599
9600		if (style && typeof style === 'object') {
9601			type = style.toString();
9602			if (type === '[object HTMLImageElement]' || type === '[object HTMLCanvasElement]') {
9603				ctx.drawImage(style, x - style.width / 2, y - style.height / 2, style.width, style.height);
9604				return;
9605			}
9606		}
9607
9608		if (isNaN(radius) || radius <= 0) {
9609			return;
9610		}
9611
9612		switch (style) {
9613		// Default includes circle
9614		default:
9615			ctx.beginPath();
9616			ctx.arc(x, y, radius, 0, Math.PI * 2);
9617			ctx.closePath();
9618			ctx.fill();
9619			break;
9620		case 'triangle':
9621			ctx.beginPath();
9622			edgeLength = 3 * radius / Math.sqrt(3);
9623			height = edgeLength * Math.sqrt(3) / 2;
9624			ctx.moveTo(x - edgeLength / 2, y + height / 3);
9625			ctx.lineTo(x + edgeLength / 2, y + height / 3);
9626			ctx.lineTo(x, y - 2 * height / 3);
9627			ctx.closePath();
9628			ctx.fill();
9629			break;
9630		case 'rect':
9631			size = 1 / Math.SQRT2 * radius;
9632			ctx.beginPath();
9633			ctx.fillRect(x - size, y - size, 2 * size, 2 * size);
9634			ctx.strokeRect(x - size, y - size, 2 * size, 2 * size);
9635			break;
9636		case 'rectRounded':
9637			var offset = radius / Math.SQRT2;
9638			var leftX = x - offset;
9639			var topY = y - offset;
9640			var sideSize = Math.SQRT2 * radius;
9641			ctx.beginPath();
9642			this.roundedRect(ctx, leftX, topY, sideSize, sideSize, radius / 2);
9643			ctx.closePath();
9644			ctx.fill();
9645			break;
9646		case 'rectRot':
9647			size = 1 / Math.SQRT2 * radius;
9648			ctx.beginPath();
9649			ctx.moveTo(x - size, y);
9650			ctx.lineTo(x, y + size);
9651			ctx.lineTo(x + size, y);
9652			ctx.lineTo(x, y - size);
9653			ctx.closePath();
9654			ctx.fill();
9655			break;
9656		case 'cross':
9657			ctx.beginPath();
9658			ctx.moveTo(x, y + radius);
9659			ctx.lineTo(x, y - radius);
9660			ctx.moveTo(x - radius, y);
9661			ctx.lineTo(x + radius, y);
9662			ctx.closePath();
9663			break;
9664		case 'crossRot':
9665			ctx.beginPath();
9666			xOffset = Math.cos(Math.PI / 4) * radius;
9667			yOffset = Math.sin(Math.PI / 4) * radius;
9668			ctx.moveTo(x - xOffset, y - yOffset);
9669			ctx.lineTo(x + xOffset, y + yOffset);
9670			ctx.moveTo(x - xOffset, y + yOffset);
9671			ctx.lineTo(x + xOffset, y - yOffset);
9672			ctx.closePath();
9673			break;
9674		case 'star':
9675			ctx.beginPath();
9676			ctx.moveTo(x, y + radius);
9677			ctx.lineTo(x, y - radius);
9678			ctx.moveTo(x - radius, y);
9679			ctx.lineTo(x + radius, y);
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 'line':
9689			ctx.beginPath();
9690			ctx.moveTo(x - radius, y);
9691			ctx.lineTo(x + radius, y);
9692			ctx.closePath();
9693			break;
9694		case 'dash':
9695			ctx.beginPath();
9696			ctx.moveTo(x, y);
9697			ctx.lineTo(x + radius, y);
9698			ctx.closePath();
9699			break;
9700		}
9701
9702		ctx.stroke();
9703	},
9704
9705	clipArea: function(ctx, area) {
9706		ctx.save();
9707		ctx.beginPath();
9708		ctx.rect(area.left, area.top, area.right - area.left, area.bottom - area.top);
9709		ctx.clip();
9710	},
9711
9712	unclipArea: function(ctx) {
9713		ctx.restore();
9714	},
9715
9716	lineTo: function(ctx, previous, target, flip) {
9717		if (target.steppedLine) {
9718			if ((target.steppedLine === 'after' && !flip) || (target.steppedLine !== 'after' && flip)) {
9719				ctx.lineTo(previous.x, target.y);
9720			} else {
9721				ctx.lineTo(target.x, previous.y);
9722			}
9723			ctx.lineTo(target.x, target.y);
9724			return;
9725		}
9726
9727		if (!target.tension) {
9728			ctx.lineTo(target.x, target.y);
9729			return;
9730		}
9731
9732		ctx.bezierCurveTo(
9733			flip ? previous.controlPointPreviousX : previous.controlPointNextX,
9734			flip ? previous.controlPointPreviousY : previous.controlPointNextY,
9735			flip ? target.controlPointNextX : target.controlPointPreviousX,
9736			flip ? target.controlPointNextY : target.controlPointPreviousY,
9737			target.x,
9738			target.y);
9739	}
9740};
9741
9742// DEPRECATIONS
9743
9744/**
9745 * Provided for backward compatibility, use Chart.helpers.canvas.clear instead.
9746 * @namespace Chart.helpers.clear
9747 * @deprecated since version 2.7.0
9748 * @todo remove at version 3
9749 * @private
9750 */
9751helpers.clear = exports.clear;
9752
9753/**
9754 * Provided for backward compatibility, use Chart.helpers.canvas.roundedRect instead.
9755 * @namespace Chart.helpers.drawRoundedRectangle
9756 * @deprecated since version 2.7.0
9757 * @todo remove at version 3
9758 * @private
9759 */
9760helpers.drawRoundedRectangle = function(ctx) {
9761	ctx.beginPath();
9762	exports.roundedRect.apply(exports, arguments);
9763	ctx.closePath();
9764};
9765
9766},{"42":42}],42:[function(require,module,exports){
9767'use strict';
9768
9769/**
9770 * @namespace Chart.helpers
9771 */
9772var helpers = {
9773	/**
9774	 * An empty function that can be used, for example, for optional callback.
9775	 */
9776	noop: function() {},
9777
9778	/**
9779	 * Returns a unique id, sequentially generated from a global variable.
9780	 * @returns {Number}
9781	 * @function
9782	 */
9783	uid: (function() {
9784		var id = 0;
9785		return function() {
9786			return id++;
9787		};
9788	}()),
9789
9790	/**
9791	 * Returns true if `value` is neither null nor undefined, else returns false.
9792	 * @param {*} value - The value to test.
9793	 * @returns {Boolean}
9794	 * @since 2.7.0
9795	 */
9796	isNullOrUndef: function(value) {
9797		return value === null || typeof value === 'undefined';
9798	},
9799
9800	/**
9801	 * Returns true if `value` is an array, else returns false.
9802	 * @param {*} value - The value to test.
9803	 * @returns {Boolean}
9804	 * @function
9805	 */
9806	isArray: Array.isArray ? Array.isArray : function(value) {
9807		return Object.prototype.toString.call(value) === '[object Array]';
9808	},
9809
9810	/**
9811	 * Returns true if `value` is an object (excluding null), else returns false.
9812	 * @param {*} value - The value to test.
9813	 * @returns {Boolean}
9814	 * @since 2.7.0
9815	 */
9816	isObject: function(value) {
9817		return value !== null && Object.prototype.toString.call(value) === '[object Object]';
9818	},
9819
9820	/**
9821	 * Returns `value` if defined, else returns `defaultValue`.
9822	 * @param {*} value - The value to return if defined.
9823	 * @param {*} defaultValue - The value to return if `value` is undefined.
9824	 * @returns {*}
9825	 */
9826	valueOrDefault: function(value, defaultValue) {
9827		return typeof value === 'undefined' ? defaultValue : value;
9828	},
9829
9830	/**
9831	 * Returns value at the given `index` in array if defined, else returns `defaultValue`.
9832	 * @param {Array} value - The array to lookup for value at `index`.
9833	 * @param {Number} index - The index in `value` to lookup for value.
9834	 * @param {*} defaultValue - The value to return if `value[index]` is undefined.
9835	 * @returns {*}
9836	 */
9837	valueAtIndexOrDefault: function(value, index, defaultValue) {
9838		return helpers.valueOrDefault(helpers.isArray(value) ? value[index] : value, defaultValue);
9839	},
9840
9841	/**
9842	 * Calls `fn` with the given `args` in the scope defined by `thisArg` and returns the
9843	 * value returned by `fn`. If `fn` is not a function, this method returns undefined.
9844	 * @param {Function} fn - The function to call.
9845	 * @param {Array|undefined|null} args - The arguments with which `fn` should be called.
9846	 * @param {Object} [thisArg] - The value of `this` provided for the call to `fn`.
9847	 * @returns {*}
9848	 */
9849	callback: function(fn, args, thisArg) {
9850		if (fn && typeof fn.call === 'function') {
9851			return fn.apply(thisArg, args);
9852		}
9853	},
9854
9855	/**
9856	 * Note(SB) for performance sake, this method should only be used when loopable type
9857	 * is unknown or in none intensive code (not called often and small loopable). Else
9858	 * it's preferable to use a regular for() loop and save extra function calls.
9859	 * @param {Object|Array} loopable - The object or array to be iterated.
9860	 * @param {Function} fn - The function to call for each item.
9861	 * @param {Object} [thisArg] - The value of `this` provided for the call to `fn`.
9862	 * @param {Boolean} [reverse] - If true, iterates backward on the loopable.
9863	 */
9864	each: function(loopable, fn, thisArg, reverse) {
9865		var i, len, keys;
9866		if (helpers.isArray(loopable)) {
9867			len = loopable.length;
9868			if (reverse) {
9869				for (i = len - 1; i >= 0; i--) {
9870					fn.call(thisArg, loopable[i], i);
9871				}
9872			} else {
9873				for (i = 0; i < len; i++) {
9874					fn.call(thisArg, loopable[i], i);
9875				}
9876			}
9877		} else if (helpers.isObject(loopable)) {
9878			keys = Object.keys(loopable);
9879			len = keys.length;
9880			for (i = 0; i < len; i++) {
9881				fn.call(thisArg, loopable[keys[i]], keys[i]);
9882			}
9883		}
9884	},
9885
9886	/**
9887	 * Returns true if the `a0` and `a1` arrays have the same content, else returns false.
9888	 * @see http://stackoverflow.com/a/14853974
9889	 * @param {Array} a0 - The array to compare
9890	 * @param {Array} a1 - The array to compare
9891	 * @returns {Boolean}
9892	 */
9893	arrayEquals: function(a0, a1) {
9894		var i, ilen, v0, v1;
9895
9896		if (!a0 || !a1 || a0.length !== a1.length) {
9897			return false;
9898		}
9899
9900		for (i = 0, ilen = a0.length; i < ilen; ++i) {
9901			v0 = a0[i];
9902			v1 = a1[i];
9903
9904			if (v0 instanceof Array && v1 instanceof Array) {
9905				if (!helpers.arrayEquals(v0, v1)) {
9906					return false;
9907				}
9908			} else if (v0 !== v1) {
9909				// NOTE: two different object instances will never be equal: {x:20} != {x:20}
9910				return false;
9911			}
9912		}
9913
9914		return true;
9915	},
9916
9917	/**
9918	 * Returns a deep copy of `source` without keeping references on objects and arrays.
9919	 * @param {*} source - The value to clone.
9920	 * @returns {*}
9921	 */
9922	clone: function(source) {
9923		if (helpers.isArray(source)) {
9924			return source.map(helpers.clone);
9925		}
9926
9927		if (helpers.isObject(source)) {
9928			var target = {};
9929			var keys = Object.keys(source);
9930			var klen = keys.length;
9931			var k = 0;
9932
9933			for (; k < klen; ++k) {
9934				target[keys[k]] = helpers.clone(source[keys[k]]);
9935			}
9936
9937			return target;
9938		}
9939
9940		return source;
9941	},
9942
9943	/**
9944	 * The default merger when Chart.helpers.merge is called without merger option.
9945	 * Note(SB): this method is also used by configMerge and scaleMerge as fallback.
9946	 * @private
9947	 */
9948	_merger: function(key, target, source, options) {
9949		var tval = target[key];
9950		var sval = source[key];
9951
9952		if (helpers.isObject(tval) && helpers.isObject(sval)) {
9953			helpers.merge(tval, sval, options);
9954		} else {
9955			target[key] = helpers.clone(sval);
9956		}
9957	},
9958
9959	/**
9960	 * Merges source[key] in target[key] only if target[key] is undefined.
9961	 * @private
9962	 */
9963	_mergerIf: function(key, target, source) {
9964		var tval = target[key];
9965		var sval = source[key];
9966
9967		if (helpers.isObject(tval) && helpers.isObject(sval)) {
9968			helpers.mergeIf(tval, sval);
9969		} else if (!target.hasOwnProperty(key)) {
9970			target[key] = helpers.clone(sval);
9971		}
9972	},
9973
9974	/**
9975	 * Recursively deep copies `source` properties into `target` with the given `options`.
9976	 * IMPORTANT: `target` is not cloned and will be updated with `source` properties.
9977	 * @param {Object} target - The target object in which all sources are merged into.
9978	 * @param {Object|Array(Object)} source - Object(s) to merge into `target`.
9979	 * @param {Object} [options] - Merging options:
9980	 * @param {Function} [options.merger] - The merge method (key, target, source, options)
9981	 * @returns {Object} The `target` object.
9982	 */
9983	merge: function(target, source, options) {
9984		var sources = helpers.isArray(source) ? source : [source];
9985		var ilen = sources.length;
9986		var merge, i, keys, klen, k;
9987
9988		if (!helpers.isObject(target)) {
9989			return target;
9990		}
9991
9992		options = options || {};
9993		merge = options.merger || helpers._merger;
9994
9995		for (i = 0; i < ilen; ++i) {
9996			source = sources[i];
9997			if (!helpers.isObject(source)) {
9998				continue;
9999			}
10000
10001			keys = Object.keys(source);
10002			for (k = 0, klen = keys.length; k < klen; ++k) {
10003				merge(keys[k], target, source, options);
10004			}
10005		}
10006
10007		return target;
10008	},
10009
10010	/**
10011	 * Recursively deep copies `source` properties into `target` *only* if not defined in target.
10012	 * IMPORTANT: `target` is not cloned and will be updated with `source` properties.
10013	 * @param {Object} target - The target object in which all sources are merged into.
10014	 * @param {Object|Array(Object)} source - Object(s) to merge into `target`.
10015	 * @returns {Object} The `target` object.
10016	 */
10017	mergeIf: function(target, source) {
10018		return helpers.merge(target, source, {merger: helpers._mergerIf});
10019	},
10020
10021	/**
10022	 * Applies the contents of two or more objects together into the first object.
10023	 * @param {Object} target - The target object in which all objects are merged into.
10024	 * @param {Object} arg1 - Object containing additional properties to merge in target.
10025	 * @param {Object} argN - Additional objects containing properties to merge in target.
10026	 * @returns {Object} The `target` object.
10027	 */
10028	extend: function(target) {
10029		var setFn = function(value, key) {
10030			target[key] = value;
10031		};
10032		for (var i = 1, ilen = arguments.length; i < ilen; ++i) {
10033			helpers.each(arguments[i], setFn);
10034		}
10035		return target;
10036	},
10037
10038	/**
10039	 * Basic javascript inheritance based on the model created in Backbone.js
10040	 */
10041	inherits: function(extensions) {
10042		var me = this;
10043		var ChartElement = (extensions && extensions.hasOwnProperty('constructor')) ? extensions.constructor : function() {
10044			return me.apply(this, arguments);
10045		};
10046
10047		var Surrogate = function() {
10048			this.constructor = ChartElement;
10049		};
10050
10051		Surrogate.prototype = me.prototype;
10052		ChartElement.prototype = new Surrogate();
10053		ChartElement.extend = helpers.inherits;
10054
10055		if (extensions) {
10056			helpers.extend(ChartElement.prototype, extensions);
10057		}
10058
10059		ChartElement.__super__ = me.prototype;
10060		return ChartElement;
10061	}
10062};
10063
10064module.exports = helpers;
10065
10066// DEPRECATIONS
10067
10068/**
10069 * Provided for backward compatibility, use Chart.helpers.callback instead.
10070 * @function Chart.helpers.callCallback
10071 * @deprecated since version 2.6.0
10072 * @todo remove at version 3
10073 * @private
10074 */
10075helpers.callCallback = helpers.callback;
10076
10077/**
10078 * Provided for backward compatibility, use Array.prototype.indexOf instead.
10079 * Array.prototype.indexOf compatibility: Chrome, Opera, Safari, FF1.5+, IE9+
10080 * @function Chart.helpers.indexOf
10081 * @deprecated since version 2.7.0
10082 * @todo remove at version 3
10083 * @private
10084 */
10085helpers.indexOf = function(array, item, fromIndex) {
10086	return Array.prototype.indexOf.call(array, item, fromIndex);
10087};
10088
10089/**
10090 * Provided for backward compatibility, use Chart.helpers.valueOrDefault instead.
10091 * @function Chart.helpers.getValueOrDefault
10092 * @deprecated since version 2.7.0
10093 * @todo remove at version 3
10094 * @private
10095 */
10096helpers.getValueOrDefault = helpers.valueOrDefault;
10097
10098/**
10099 * Provided for backward compatibility, use Chart.helpers.valueAtIndexOrDefault instead.
10100 * @function Chart.helpers.getValueAtIndexOrDefault
10101 * @deprecated since version 2.7.0
10102 * @todo remove at version 3
10103 * @private
10104 */
10105helpers.getValueAtIndexOrDefault = helpers.valueAtIndexOrDefault;
10106
10107},{}],43:[function(require,module,exports){
10108'use strict';
10109
10110var helpers = require(42);
10111
10112/**
10113 * Easing functions adapted from Robert Penner's easing equations.
10114 * @namespace Chart.helpers.easingEffects
10115 * @see http://www.robertpenner.com/easing/
10116 */
10117var effects = {
10118	linear: function(t) {
10119		return t;
10120	},
10121
10122	easeInQuad: function(t) {
10123		return t * t;
10124	},
10125
10126	easeOutQuad: function(t) {
10127		return -t * (t - 2);
10128	},
10129
10130	easeInOutQuad: function(t) {
10131		if ((t /= 0.5) < 1) {
10132			return 0.5 * t * t;
10133		}
10134		return -0.5 * ((--t) * (t - 2) - 1);
10135	},
10136
10137	easeInCubic: function(t) {
10138		return t * t * t;
10139	},
10140
10141	easeOutCubic: function(t) {
10142		return (t = t - 1) * t * t + 1;
10143	},
10144
10145	easeInOutCubic: function(t) {
10146		if ((t /= 0.5) < 1) {
10147			return 0.5 * t * t * t;
10148		}
10149		return 0.5 * ((t -= 2) * t * t + 2);
10150	},
10151
10152	easeInQuart: function(t) {
10153		return t * t * t * t;
10154	},
10155
10156	easeOutQuart: function(t) {
10157		return -((t = t - 1) * t * t * t - 1);
10158	},
10159
10160	easeInOutQuart: function(t) {
10161		if ((t /= 0.5) < 1) {
10162			return 0.5 * t * t * t * t;
10163		}
10164		return -0.5 * ((t -= 2) * t * t * t - 2);
10165	},
10166
10167	easeInQuint: function(t) {
10168		return t * t * t * t * t;
10169	},
10170
10171	easeOutQuint: function(t) {
10172		return (t = t - 1) * t * t * t * t + 1;
10173	},
10174
10175	easeInOutQuint: function(t) {
10176		if ((t /= 0.5) < 1) {
10177			return 0.5 * t * t * t * t * t;
10178		}
10179		return 0.5 * ((t -= 2) * t * t * t * t + 2);
10180	},
10181
10182	easeInSine: function(t) {
10183		return -Math.cos(t * (Math.PI / 2)) + 1;
10184	},
10185
10186	easeOutSine: function(t) {
10187		return Math.sin(t * (Math.PI / 2));
10188	},
10189
10190	easeInOutSine: function(t) {
10191		return -0.5 * (Math.cos(Math.PI * t) - 1);
10192	},
10193
10194	easeInExpo: function(t) {
10195		return (t === 0) ? 0 : Math.pow(2, 10 * (t - 1));
10196	},
10197
10198	easeOutExpo: function(t) {
10199		return (t === 1) ? 1 : -Math.pow(2, -10 * t) + 1;
10200	},
10201
10202	easeInOutExpo: function(t) {
10203		if (t === 0) {
10204			return 0;
10205		}
10206		if (t === 1) {
10207			return 1;
10208		}
10209		if ((t /= 0.5) < 1) {
10210			return 0.5 * Math.pow(2, 10 * (t - 1));
10211		}
10212		return 0.5 * (-Math.pow(2, -10 * --t) + 2);
10213	},
10214
10215	easeInCirc: function(t) {
10216		if (t >= 1) {
10217			return t;
10218		}
10219		return -(Math.sqrt(1 - t * t) - 1);
10220	},
10221
10222	easeOutCirc: function(t) {
10223		return Math.sqrt(1 - (t = t - 1) * t);
10224	},
10225
10226	easeInOutCirc: function(t) {
10227		if ((t /= 0.5) < 1) {
10228			return -0.5 * (Math.sqrt(1 - t * t) - 1);
10229		}
10230		return 0.5 * (Math.sqrt(1 - (t -= 2) * t) + 1);
10231	},
10232
10233	easeInElastic: function(t) {
10234		var s = 1.70158;
10235		var p = 0;
10236		var a = 1;
10237		if (t === 0) {
10238			return 0;
10239		}
10240		if (t === 1) {
10241			return 1;
10242		}
10243		if (!p) {
10244			p = 0.3;
10245		}
10246		if (a < 1) {
10247			a = 1;
10248			s = p / 4;
10249		} else {
10250			s = p / (2 * Math.PI) * Math.asin(1 / a);
10251		}
10252		return -(a * Math.pow(2, 10 * (t -= 1)) * Math.sin((t - s) * (2 * Math.PI) / p));
10253	},
10254
10255	easeOutElastic: function(t) {
10256		var s = 1.70158;
10257		var p = 0;
10258		var a = 1;
10259		if (t === 0) {
10260			return 0;
10261		}
10262		if (t === 1) {
10263			return 1;
10264		}
10265		if (!p) {
10266			p = 0.3;
10267		}
10268		if (a < 1) {
10269			a = 1;
10270			s = p / 4;
10271		} else {
10272			s = p / (2 * Math.PI) * Math.asin(1 / a);
10273		}
10274		return a * Math.pow(2, -10 * t) * Math.sin((t - s) * (2 * Math.PI) / p) + 1;
10275	},
10276
10277	easeInOutElastic: function(t) {
10278		var s = 1.70158;
10279		var p = 0;
10280		var a = 1;
10281		if (t === 0) {
10282			return 0;
10283		}
10284		if ((t /= 0.5) === 2) {
10285			return 1;
10286		}
10287		if (!p) {
10288			p = 0.45;
10289		}
10290		if (a < 1) {
10291			a = 1;
10292			s = p / 4;
10293		} else {
10294			s = p / (2 * Math.PI) * Math.asin(1 / a);
10295		}
10296		if (t < 1) {
10297			return -0.5 * (a * Math.pow(2, 10 * (t -= 1)) * Math.sin((t - s) * (2 * Math.PI) / p));
10298		}
10299		return a * Math.pow(2, -10 * (t -= 1)) * Math.sin((t - s) * (2 * Math.PI) / p) * 0.5 + 1;
10300	},
10301	easeInBack: function(t) {
10302		var s = 1.70158;
10303		return t * t * ((s + 1) * t - s);
10304	},
10305
10306	easeOutBack: function(t) {
10307		var s = 1.70158;
10308		return (t = t - 1) * t * ((s + 1) * t + s) + 1;
10309	},
10310
10311	easeInOutBack: function(t) {
10312		var s = 1.70158;
10313		if ((t /= 0.5) < 1) {
10314			return 0.5 * (t * t * (((s *= (1.525)) + 1) * t - s));
10315		}
10316		return 0.5 * ((t -= 2) * t * (((s *= (1.525)) + 1) * t + s) + 2);
10317	},
10318
10319	easeInBounce: function(t) {
10320		return 1 - effects.easeOutBounce(1 - t);
10321	},
10322
10323	easeOutBounce: function(t) {
10324		if (t < (1 / 2.75)) {
10325			return 7.5625 * t * t;
10326		}
10327		if (t < (2 / 2.75)) {
10328			return 7.5625 * (t -= (1.5 / 2.75)) * t + 0.75;
10329		}
10330		if (t < (2.5 / 2.75)) {
10331			return 7.5625 * (t -= (2.25 / 2.75)) * t + 0.9375;
10332		}
10333		return 7.5625 * (t -= (2.625 / 2.75)) * t + 0.984375;
10334	},
10335
10336	easeInOutBounce: function(t) {
10337		if (t < 0.5) {
10338			return effects.easeInBounce(t * 2) * 0.5;
10339		}
10340		return effects.easeOutBounce(t * 2 - 1) * 0.5 + 0.5;
10341	}
10342};
10343
10344module.exports = {
10345	effects: effects
10346};
10347
10348// DEPRECATIONS
10349
10350/**
10351 * Provided for backward compatibility, use Chart.helpers.easing.effects instead.
10352 * @function Chart.helpers.easingEffects
10353 * @deprecated since version 2.7.0
10354 * @todo remove at version 3
10355 * @private
10356 */
10357helpers.easingEffects = effects;
10358
10359},{"42":42}],44:[function(require,module,exports){
10360'use strict';
10361
10362var helpers = require(42);
10363
10364/**
10365 * @alias Chart.helpers.options
10366 * @namespace
10367 */
10368module.exports = {
10369	/**
10370	 * Converts the given line height `value` in pixels for a specific font `size`.
10371	 * @param {Number|String} value - The lineHeight to parse (eg. 1.6, '14px', '75%', '1.6em').
10372	 * @param {Number} size - The font size (in pixels) used to resolve relative `value`.
10373	 * @returns {Number} The effective line height in pixels (size * 1.2 if value is invalid).
10374	 * @see https://developer.mozilla.org/en-US/docs/Web/CSS/line-height
10375	 * @since 2.7.0
10376	 */
10377	toLineHeight: function(value, size) {
10378		var matches = ('' + value).match(/^(normal|(\d+(?:\.\d+)?)(px|em|%)?)$/);
10379		if (!matches || matches[1] === 'normal') {
10380			return size * 1.2;
10381		}
10382
10383		value = +matches[2];
10384
10385		switch (matches[3]) {
10386		case 'px':
10387			return value;
10388		case '%':
10389			value /= 100;
10390			break;
10391		default:
10392			break;
10393		}
10394
10395		return size * value;
10396	},
10397
10398	/**
10399	 * Converts the given value into a padding object with pre-computed width/height.
10400	 * @param {Number|Object} value - If a number, set the value to all TRBL component,
10401	 *  else, if and object, use defined properties and sets undefined ones to 0.
10402	 * @returns {Object} The padding values (top, right, bottom, left, width, height)
10403	 * @since 2.7.0
10404	 */
10405	toPadding: function(value) {
10406		var t, r, b, l;
10407
10408		if (helpers.isObject(value)) {
10409			t = +value.top || 0;
10410			r = +value.right || 0;
10411			b = +value.bottom || 0;
10412			l = +value.left || 0;
10413		} else {
10414			t = r = b = l = +value || 0;
10415		}
10416
10417		return {
10418			top: t,
10419			right: r,
10420			bottom: b,
10421			left: l,
10422			height: t + b,
10423			width: l + r
10424		};
10425	},
10426
10427	/**
10428	 * Evaluates the given `inputs` sequentially and returns the first defined value.
10429	 * @param {Array[]} inputs - An array of values, falling back to the last value.
10430	 * @param {Object} [context] - If defined and the current value is a function, the value
10431	 * is called with `context` as first argument and the result becomes the new input.
10432	 * @param {Number} [index] - If defined and the current value is an array, the value
10433	 * at `index` become the new input.
10434	 * @since 2.7.0
10435	 */
10436	resolve: function(inputs, context, index) {
10437		var i, ilen, value;
10438
10439		for (i = 0, ilen = inputs.length; i < ilen; ++i) {
10440			value = inputs[i];
10441			if (value === undefined) {
10442				continue;
10443			}
10444			if (context !== undefined && typeof value === 'function') {
10445				value = value(context);
10446			}
10447			if (index !== undefined && helpers.isArray(value)) {
10448				value = value[index];
10449			}
10450			if (value !== undefined) {
10451				return value;
10452			}
10453		}
10454	}
10455};
10456
10457},{"42":42}],45:[function(require,module,exports){
10458'use strict';
10459
10460module.exports = require(42);
10461module.exports.easing = require(43);
10462module.exports.canvas = require(41);
10463module.exports.options = require(44);
10464
10465},{"41":41,"42":42,"43":43,"44":44}],46:[function(require,module,exports){
10466/**
10467 * Platform fallback implementation (minimal).
10468 * @see https://github.com/chartjs/Chart.js/pull/4591#issuecomment-319575939
10469 */
10470
10471module.exports = {
10472	acquireContext: function(item) {
10473		if (item && item.canvas) {
10474			// Support for any object associated to a canvas (including a context2d)
10475			item = item.canvas;
10476		}
10477
10478		return item && item.getContext('2d') || null;
10479	}
10480};
10481
10482},{}],47:[function(require,module,exports){
10483/**
10484 * Chart.Platform implementation for targeting a web browser
10485 */
10486
10487'use strict';
10488
10489var helpers = require(45);
10490
10491var EXPANDO_KEY = '$chartjs';
10492var CSS_PREFIX = 'chartjs-';
10493var CSS_RENDER_MONITOR = CSS_PREFIX + 'render-monitor';
10494var CSS_RENDER_ANIMATION = CSS_PREFIX + 'render-animation';
10495var ANIMATION_START_EVENTS = ['animationstart', 'webkitAnimationStart'];
10496
10497/**
10498 * DOM event types -> Chart.js event types.
10499 * Note: only events with different types are mapped.
10500 * @see https://developer.mozilla.org/en-US/docs/Web/Events
10501 */
10502var EVENT_TYPES = {
10503	touchstart: 'mousedown',
10504	touchmove: 'mousemove',
10505	touchend: 'mouseup',
10506	pointerenter: 'mouseenter',
10507	pointerdown: 'mousedown',
10508	pointermove: 'mousemove',
10509	pointerup: 'mouseup',
10510	pointerleave: 'mouseout',
10511	pointerout: 'mouseout'
10512};
10513
10514/**
10515 * The "used" size is the final value of a dimension property after all calculations have
10516 * been performed. This method uses the computed style of `element` but returns undefined
10517 * if the computed style is not expressed in pixels. That can happen in some cases where
10518 * `element` has a size relative to its parent and this last one is not yet displayed,
10519 * for example because of `display: none` on a parent node.
10520 * @see https://developer.mozilla.org/en-US/docs/Web/CSS/used_value
10521 * @returns {Number} Size in pixels or undefined if unknown.
10522 */
10523function readUsedSize(element, property) {
10524	var value = helpers.getStyle(element, property);
10525	var matches = value && value.match(/^(\d+)(\.\d+)?px$/);
10526	return matches ? Number(matches[1]) : undefined;
10527}
10528
10529/**
10530 * Initializes the canvas style and render size without modifying the canvas display size,
10531 * since responsiveness is handled by the controller.resize() method. The config is used
10532 * to determine the aspect ratio to apply in case no explicit height has been specified.
10533 */
10534function initCanvas(canvas, config) {
10535	var style = canvas.style;
10536
10537	// NOTE(SB) canvas.getAttribute('width') !== canvas.width: in the first case it
10538	// returns null or '' if no explicit value has been set to the canvas attribute.
10539	var renderHeight = canvas.getAttribute('height');
10540	var renderWidth = canvas.getAttribute('width');
10541
10542	// Chart.js modifies some canvas values that we want to restore on destroy
10543	canvas[EXPANDO_KEY] = {
10544		initial: {
10545			height: renderHeight,
10546			width: renderWidth,
10547			style: {
10548				display: style.display,
10549				height: style.height,
10550				width: style.width
10551			}
10552		}
10553	};
10554
10555	// Force canvas to display as block to avoid extra space caused by inline
10556	// elements, which would interfere with the responsive resize process.
10557	// https://github.com/chartjs/Chart.js/issues/2538
10558	style.display = style.display || 'block';
10559
10560	if (renderWidth === null || renderWidth === '') {
10561		var displayWidth = readUsedSize(canvas, 'width');
10562		if (displayWidth !== undefined) {
10563			canvas.width = displayWidth;
10564		}
10565	}
10566
10567	if (renderHeight === null || renderHeight === '') {
10568		if (canvas.style.height === '') {
10569			// If no explicit render height and style height, let's apply the aspect ratio,
10570			// which one can be specified by the user but also by charts as default option
10571			// (i.e. options.aspectRatio). If not specified, use canvas aspect ratio of 2.
10572			canvas.height = canvas.width / (config.options.aspectRatio || 2);
10573		} else {
10574			var displayHeight = readUsedSize(canvas, 'height');
10575			if (displayWidth !== undefined) {
10576				canvas.height = displayHeight;
10577			}
10578		}
10579	}
10580
10581	return canvas;
10582}
10583
10584/**
10585 * Detects support for options object argument in addEventListener.
10586 * https://developer.mozilla.org/en-US/docs/Web/API/EventTarget/addEventListener#Safely_detecting_option_support
10587 * @private
10588 */
10589var supportsEventListenerOptions = (function() {
10590	var supports = false;
10591	try {
10592		var options = Object.defineProperty({}, 'passive', {
10593			get: function() {
10594				supports = true;
10595			}
10596		});
10597		window.addEventListener('e', null, options);
10598	} catch (e) {
10599		// continue regardless of error
10600	}
10601	return supports;
10602}());
10603
10604// Default passive to true as expected by Chrome for 'touchstart' and 'touchend' events.
10605// https://github.com/chartjs/Chart.js/issues/4287
10606var eventListenerOptions = supportsEventListenerOptions ? {passive: true} : false;
10607
10608function addEventListener(node, type, listener) {
10609	node.addEventListener(type, listener, eventListenerOptions);
10610}
10611
10612function removeEventListener(node, type, listener) {
10613	node.removeEventListener(type, listener, eventListenerOptions);
10614}
10615
10616function createEvent(type, chart, x, y, nativeEvent) {
10617	return {
10618		type: type,
10619		chart: chart,
10620		native: nativeEvent || null,
10621		x: x !== undefined ? x : null,
10622		y: y !== undefined ? y : null,
10623	};
10624}
10625
10626function fromNativeEvent(event, chart) {
10627	var type = EVENT_TYPES[event.type] || event.type;
10628	var pos = helpers.getRelativePosition(event, chart);
10629	return createEvent(type, chart, pos.x, pos.y, event);
10630}
10631
10632function throttled(fn, thisArg) {
10633	var ticking = false;
10634	var args = [];
10635
10636	return function() {
10637		args = Array.prototype.slice.call(arguments);
10638		thisArg = thisArg || this;
10639
10640		if (!ticking) {
10641			ticking = true;
10642			helpers.requestAnimFrame.call(window, function() {
10643				ticking = false;
10644				fn.apply(thisArg, args);
10645			});
10646		}
10647	};
10648}
10649
10650// Implementation based on https://github.com/marcj/css-element-queries
10651function createResizer(handler) {
10652	var resizer = document.createElement('div');
10653	var cls = CSS_PREFIX + 'size-monitor';
10654	var maxSize = 1000000;
10655	var style =
10656		'position:absolute;' +
10657		'left:0;' +
10658		'top:0;' +
10659		'right:0;' +
10660		'bottom:0;' +
10661		'overflow:hidden;' +
10662		'pointer-events:none;' +
10663		'visibility:hidden;' +
10664		'z-index:-1;';
10665
10666	resizer.style.cssText = style;
10667	resizer.className = cls;
10668	resizer.innerHTML =
10669		'<div class="' + cls + '-expand" style="' + style + '">' +
10670			'<div style="' +
10671				'position:absolute;' +
10672				'width:' + maxSize + 'px;' +
10673				'height:' + maxSize + 'px;' +
10674				'left:0;' +
10675				'top:0">' +
10676			'</div>' +
10677		'</div>' +
10678		'<div class="' + cls + '-shrink" style="' + style + '">' +
10679			'<div style="' +
10680				'position:absolute;' +
10681				'width:200%;' +
10682				'height:200%;' +
10683				'left:0; ' +
10684				'top:0">' +
10685			'</div>' +
10686		'</div>';
10687
10688	var expand = resizer.childNodes[0];
10689	var shrink = resizer.childNodes[1];
10690
10691	resizer._reset = function() {
10692		expand.scrollLeft = maxSize;
10693		expand.scrollTop = maxSize;
10694		shrink.scrollLeft = maxSize;
10695		shrink.scrollTop = maxSize;
10696	};
10697	var onScroll = function() {
10698		resizer._reset();
10699		handler();
10700	};
10701
10702	addEventListener(expand, 'scroll', onScroll.bind(expand, 'expand'));
10703	addEventListener(shrink, 'scroll', onScroll.bind(shrink, 'shrink'));
10704
10705	return resizer;
10706}
10707
10708// https://davidwalsh.name/detect-node-insertion
10709function watchForRender(node, handler) {
10710	var expando = node[EXPANDO_KEY] || (node[EXPANDO_KEY] = {});
10711	var proxy = expando.renderProxy = function(e) {
10712		if (e.animationName === CSS_RENDER_ANIMATION) {
10713			handler();
10714		}
10715	};
10716
10717	helpers.each(ANIMATION_START_EVENTS, function(type) {
10718		addEventListener(node, type, proxy);
10719	});
10720
10721	// #4737: Chrome might skip the CSS animation when the CSS_RENDER_MONITOR class
10722	// is removed then added back immediately (same animation frame?). Accessing the
10723	// `offsetParent` property will force a reflow and re-evaluate the CSS animation.
10724	// https://gist.github.com/paulirish/5d52fb081b3570c81e3a#box-metrics
10725	// https://github.com/chartjs/Chart.js/issues/4737
10726	expando.reflow = !!node.offsetParent;
10727
10728	node.classList.add(CSS_RENDER_MONITOR);
10729}
10730
10731function unwatchForRender(node) {
10732	var expando = node[EXPANDO_KEY] || {};
10733	var proxy = expando.renderProxy;
10734
10735	if (proxy) {
10736		helpers.each(ANIMATION_START_EVENTS, function(type) {
10737			removeEventListener(node, type, proxy);
10738		});
10739
10740		delete expando.renderProxy;
10741	}
10742
10743	node.classList.remove(CSS_RENDER_MONITOR);
10744}
10745
10746function addResizeListener(node, listener, chart) {
10747	var expando = node[EXPANDO_KEY] || (node[EXPANDO_KEY] = {});
10748
10749	// Let's keep track of this added resizer and thus avoid DOM query when removing it.
10750	var resizer = expando.resizer = createResizer(throttled(function() {
10751		if (expando.resizer) {
10752			return listener(createEvent('resize', chart));
10753		}
10754	}));
10755
10756	// The resizer needs to be attached to the node parent, so we first need to be
10757	// sure that `node` is attached to the DOM before injecting the resizer element.
10758	watchForRender(node, function() {
10759		if (expando.resizer) {
10760			var container = node.parentNode;
10761			if (container && container !== resizer.parentNode) {
10762				container.insertBefore(resizer, container.firstChild);
10763			}
10764
10765			// The container size might have changed, let's reset the resizer state.
10766			resizer._reset();
10767		}
10768	});
10769}
10770
10771function removeResizeListener(node) {
10772	var expando = node[EXPANDO_KEY] || {};
10773	var resizer = expando.resizer;
10774
10775	delete expando.resizer;
10776	unwatchForRender(node);
10777
10778	if (resizer && resizer.parentNode) {
10779		resizer.parentNode.removeChild(resizer);
10780	}
10781}
10782
10783function injectCSS(platform, css) {
10784	// http://stackoverflow.com/q/3922139
10785	var style = platform._style || document.createElement('style');
10786	if (!platform._style) {
10787		platform._style = style;
10788		css = '/* Chart.js */\n' + css;
10789		style.setAttribute('type', 'text/css');
10790		document.getElementsByTagName('head')[0].appendChild(style);
10791	}
10792
10793	style.appendChild(document.createTextNode(css));
10794}
10795
10796module.exports = {
10797	/**
10798	 * This property holds whether this platform is enabled for the current environment.
10799	 * Currently used by platform.js to select the proper implementation.
10800	 * @private
10801	 */
10802	_enabled: typeof window !== 'undefined' && typeof document !== 'undefined',
10803
10804	initialize: function() {
10805		var keyframes = 'from{opacity:0.99}to{opacity:1}';
10806
10807		injectCSS(this,
10808			// DOM rendering detection
10809			// https://davidwalsh.name/detect-node-insertion
10810			'@-webkit-keyframes ' + CSS_RENDER_ANIMATION + '{' + keyframes + '}' +
10811			'@keyframes ' + CSS_RENDER_ANIMATION + '{' + keyframes + '}' +
10812			'.' + CSS_RENDER_MONITOR + '{' +
10813				'-webkit-animation:' + CSS_RENDER_ANIMATION + ' 0.001s;' +
10814				'animation:' + CSS_RENDER_ANIMATION + ' 0.001s;' +
10815			'}'
10816		);
10817	},
10818
10819	acquireContext: function(item, config) {
10820		if (typeof item === 'string') {
10821			item = document.getElementById(item);
10822		} else if (item.length) {
10823			// Support for array based queries (such as jQuery)
10824			item = item[0];
10825		}
10826
10827		if (item && item.canvas) {
10828			// Support for any object associated to a canvas (including a context2d)
10829			item = item.canvas;
10830		}
10831
10832		// To prevent canvas fingerprinting, some add-ons undefine the getContext
10833		// method, for example: https://github.com/kkapsner/CanvasBlocker
10834		// https://github.com/chartjs/Chart.js/issues/2807
10835		var context = item && item.getContext && item.getContext('2d');
10836
10837		// `instanceof HTMLCanvasElement/CanvasRenderingContext2D` fails when the item is
10838		// inside an iframe or when running in a protected environment. We could guess the
10839		// types from their toString() value but let's keep things flexible and assume it's
10840		// a sufficient condition if the item has a context2D which has item as `canvas`.
10841		// https://github.com/chartjs/Chart.js/issues/3887
10842		// https://github.com/chartjs/Chart.js/issues/4102
10843		// https://github.com/chartjs/Chart.js/issues/4152
10844		if (context && context.canvas === item) {
10845			initCanvas(item, config);
10846			return context;
10847		}
10848
10849		return null;
10850	},
10851
10852	releaseContext: function(context) {
10853		var canvas = context.canvas;
10854		if (!canvas[EXPANDO_KEY]) {
10855			return;
10856		}
10857
10858		var initial = canvas[EXPANDO_KEY].initial;
10859		['height', 'width'].forEach(function(prop) {
10860			var value = initial[prop];
10861			if (helpers.isNullOrUndef(value)) {
10862				canvas.removeAttribute(prop);
10863			} else {
10864				canvas.setAttribute(prop, value);
10865			}
10866		});
10867
10868		helpers.each(initial.style || {}, function(value, key) {
10869			canvas.style[key] = value;
10870		});
10871
10872		// The canvas render size might have been changed (and thus the state stack discarded),
10873		// we can't use save() and restore() to restore the initial state. So make sure that at
10874		// least the canvas context is reset to the default state by setting the canvas width.
10875		// https://www.w3.org/TR/2011/WD-html5-20110525/the-canvas-element.html
10876		canvas.width = canvas.width;
10877
10878		delete canvas[EXPANDO_KEY];
10879	},
10880
10881	addEventListener: function(chart, type, listener) {
10882		var canvas = chart.canvas;
10883		if (type === 'resize') {
10884			// Note: the resize event is not supported on all browsers.
10885			addResizeListener(canvas, listener, chart);
10886			return;
10887		}
10888
10889		var expando = listener[EXPANDO_KEY] || (listener[EXPANDO_KEY] = {});
10890		var proxies = expando.proxies || (expando.proxies = {});
10891		var proxy = proxies[chart.id + '_' + type] = function(event) {
10892			listener(fromNativeEvent(event, chart));
10893		};
10894
10895		addEventListener(canvas, type, proxy);
10896	},
10897
10898	removeEventListener: function(chart, type, listener) {
10899		var canvas = chart.canvas;
10900		if (type === 'resize') {
10901			// Note: the resize event is not supported on all browsers.
10902			removeResizeListener(canvas, listener);
10903			return;
10904		}
10905
10906		var expando = listener[EXPANDO_KEY] || {};
10907		var proxies = expando.proxies || {};
10908		var proxy = proxies[chart.id + '_' + type];
10909		if (!proxy) {
10910			return;
10911		}
10912
10913		removeEventListener(canvas, type, proxy);
10914	}
10915};
10916
10917// DEPRECATIONS
10918
10919/**
10920 * Provided for backward compatibility, use EventTarget.addEventListener instead.
10921 * EventTarget.addEventListener compatibility: Chrome, Opera 7, Safari, FF1.5+, IE9+
10922 * @see https://developer.mozilla.org/en-US/docs/Web/API/EventTarget/addEventListener
10923 * @function Chart.helpers.addEvent
10924 * @deprecated since version 2.7.0
10925 * @todo remove at version 3
10926 * @private
10927 */
10928helpers.addEvent = addEventListener;
10929
10930/**
10931 * Provided for backward compatibility, use EventTarget.removeEventListener instead.
10932 * EventTarget.removeEventListener compatibility: Chrome, Opera 7, Safari, FF1.5+, IE9+
10933 * @see https://developer.mozilla.org/en-US/docs/Web/API/EventTarget/removeEventListener
10934 * @function Chart.helpers.removeEvent
10935 * @deprecated since version 2.7.0
10936 * @todo remove at version 3
10937 * @private
10938 */
10939helpers.removeEvent = removeEventListener;
10940
10941},{"45":45}],48:[function(require,module,exports){
10942'use strict';
10943
10944var helpers = require(45);
10945var basic = require(46);
10946var dom = require(47);
10947
10948// @TODO Make possible to select another platform at build time.
10949var implementation = dom._enabled ? dom : basic;
10950
10951/**
10952 * @namespace Chart.platform
10953 * @see https://chartjs.gitbooks.io/proposals/content/Platform.html
10954 * @since 2.4.0
10955 */
10956module.exports = helpers.extend({
10957	/**
10958	 * @since 2.7.0
10959	 */
10960	initialize: function() {},
10961
10962	/**
10963	 * Called at chart construction time, returns a context2d instance implementing
10964	 * the [W3C Canvas 2D Context API standard]{@link https://www.w3.org/TR/2dcontext/}.
10965	 * @param {*} item - The native item from which to acquire context (platform specific)
10966	 * @param {Object} options - The chart options
10967	 * @returns {CanvasRenderingContext2D} context2d instance
10968	 */
10969	acquireContext: function() {},
10970
10971	/**
10972	 * Called at chart destruction time, releases any resources associated to the context
10973	 * previously returned by the acquireContext() method.
10974	 * @param {CanvasRenderingContext2D} context - The context2d instance
10975	 * @returns {Boolean} true if the method succeeded, else false
10976	 */
10977	releaseContext: function() {},
10978
10979	/**
10980	 * Registers the specified listener on the given chart.
10981	 * @param {Chart} chart - Chart from which to listen for event
10982	 * @param {String} type - The ({@link IEvent}) type to listen for
10983	 * @param {Function} listener - Receives a notification (an object that implements
10984	 * the {@link IEvent} interface) when an event of the specified type occurs.
10985	 */
10986	addEventListener: function() {},
10987
10988	/**
10989	 * Removes the specified listener previously registered with addEventListener.
10990	 * @param {Chart} chart -Chart from which to remove the listener
10991	 * @param {String} type - The ({@link IEvent}) type to remove
10992	 * @param {Function} listener - The listener function to remove from the event target.
10993	 */
10994	removeEventListener: function() {}
10995
10996}, implementation);
10997
10998/**
10999 * @interface IPlatform
11000 * Allows abstracting platform dependencies away from the chart
11001 * @borrows Chart.platform.acquireContext as acquireContext
11002 * @borrows Chart.platform.releaseContext as releaseContext
11003 * @borrows Chart.platform.addEventListener as addEventListener
11004 * @borrows Chart.platform.removeEventListener as removeEventListener
11005 */
11006
11007/**
11008 * @interface IEvent
11009 * @prop {String} type - The event type name, possible values are:
11010 * 'contextmenu', 'mouseenter', 'mousedown', 'mousemove', 'mouseup', 'mouseout',
11011 * 'click', 'dblclick', 'keydown', 'keypress', 'keyup' and 'resize'
11012 * @prop {*} native - The original native event (null for emulated events, e.g. 'resize')
11013 * @prop {Number} x - The mouse x position, relative to the canvas (null for incompatible events)
11014 * @prop {Number} y - The mouse y position, relative to the canvas (null for incompatible events)
11015 */
11016
11017},{"45":45,"46":46,"47":47}],49:[function(require,module,exports){
11018'use strict';
11019
11020module.exports = {};
11021module.exports.filler = require(50);
11022module.exports.legend = require(51);
11023module.exports.title = require(52);
11024
11025},{"50":50,"51":51,"52":52}],50:[function(require,module,exports){
11026/**
11027 * Plugin based on discussion from the following Chart.js issues:
11028 * @see https://github.com/chartjs/Chart.js/issues/2380#issuecomment-279961569
11029 * @see https://github.com/chartjs/Chart.js/issues/2440#issuecomment-256461897
11030 */
11031
11032'use strict';
11033
11034var defaults = require(25);
11035var elements = require(40);
11036var helpers = require(45);
11037
11038defaults._set('global', {
11039	plugins: {
11040		filler: {
11041			propagate: true
11042		}
11043	}
11044});
11045
11046var mappers = {
11047	dataset: function(source) {
11048		var index = source.fill;
11049		var chart = source.chart;
11050		var meta = chart.getDatasetMeta(index);
11051		var visible = meta && chart.isDatasetVisible(index);
11052		var points = (visible && meta.dataset._children) || [];
11053		var length = points.length || 0;
11054
11055		return !length ? null : function(point, i) {
11056			return (i < length && points[i]._view) || null;
11057		};
11058	},
11059
11060	boundary: function(source) {
11061		var boundary = source.boundary;
11062		var x = boundary ? boundary.x : null;
11063		var y = boundary ? boundary.y : null;
11064
11065		return function(point) {
11066			return {
11067				x: x === null ? point.x : x,
11068				y: y === null ? point.y : y,
11069			};
11070		};
11071	}
11072};
11073
11074// @todo if (fill[0] === '#')
11075function decodeFill(el, index, count) {
11076	var model = el._model || {};
11077	var fill = model.fill;
11078	var target;
11079
11080	if (fill === undefined) {
11081		fill = !!model.backgroundColor;
11082	}
11083
11084	if (fill === false || fill === null) {
11085		return false;
11086	}
11087
11088	if (fill === true) {
11089		return 'origin';
11090	}
11091
11092	target = parseFloat(fill, 10);
11093	if (isFinite(target) && Math.floor(target) === target) {
11094		if (fill[0] === '-' || fill[0] === '+') {
11095			target = index + target;
11096		}
11097
11098		if (target === index || target < 0 || target >= count) {
11099			return false;
11100		}
11101
11102		return target;
11103	}
11104
11105	switch (fill) {
11106	// compatibility
11107	case 'bottom':
11108		return 'start';
11109	case 'top':
11110		return 'end';
11111	case 'zero':
11112		return 'origin';
11113	// supported boundaries
11114	case 'origin':
11115	case 'start':
11116	case 'end':
11117		return fill;
11118	// invalid fill values
11119	default:
11120		return false;
11121	}
11122}
11123
11124function computeBoundary(source) {
11125	var model = source.el._model || {};
11126	var scale = source.el._scale || {};
11127	var fill = source.fill;
11128	var target = null;
11129	var horizontal;
11130
11131	if (isFinite(fill)) {
11132		return null;
11133	}
11134
11135	// Backward compatibility: until v3, we still need to support boundary values set on
11136	// the model (scaleTop, scaleBottom and scaleZero) because some external plugins and
11137	// controllers might still use it (e.g. the Smith chart).
11138
11139	if (fill === 'start') {
11140		target = model.scaleBottom === undefined ? scale.bottom : model.scaleBottom;
11141	} else if (fill === 'end') {
11142		target = model.scaleTop === undefined ? scale.top : model.scaleTop;
11143	} else if (model.scaleZero !== undefined) {
11144		target = model.scaleZero;
11145	} else if (scale.getBasePosition) {
11146		target = scale.getBasePosition();
11147	} else if (scale.getBasePixel) {
11148		target = scale.getBasePixel();
11149	}
11150
11151	if (target !== undefined && target !== null) {
11152		if (target.x !== undefined && target.y !== undefined) {
11153			return target;
11154		}
11155
11156		if (typeof target === 'number' && isFinite(target)) {
11157			horizontal = scale.isHorizontal();
11158			return {
11159				x: horizontal ? target : null,
11160				y: horizontal ? null : target
11161			};
11162		}
11163	}
11164
11165	return null;
11166}
11167
11168function resolveTarget(sources, index, propagate) {
11169	var source = sources[index];
11170	var fill = source.fill;
11171	var visited = [index];
11172	var target;
11173
11174	if (!propagate) {
11175		return fill;
11176	}
11177
11178	while (fill !== false && visited.indexOf(fill) === -1) {
11179		if (!isFinite(fill)) {
11180			return fill;
11181		}
11182
11183		target = sources[fill];
11184		if (!target) {
11185			return false;
11186		}
11187
11188		if (target.visible) {
11189			return fill;
11190		}
11191
11192		visited.push(fill);
11193		fill = target.fill;
11194	}
11195
11196	return false;
11197}
11198
11199function createMapper(source) {
11200	var fill = source.fill;
11201	var type = 'dataset';
11202
11203	if (fill === false) {
11204		return null;
11205	}
11206
11207	if (!isFinite(fill)) {
11208		type = 'boundary';
11209	}
11210
11211	return mappers[type](source);
11212}
11213
11214function isDrawable(point) {
11215	return point && !point.skip;
11216}
11217
11218function drawArea(ctx, curve0, curve1, len0, len1) {
11219	var i;
11220
11221	if (!len0 || !len1) {
11222		return;
11223	}
11224
11225	// building first area curve (normal)
11226	ctx.moveTo(curve0[0].x, curve0[0].y);
11227	for (i = 1; i < len0; ++i) {
11228		helpers.canvas.lineTo(ctx, curve0[i - 1], curve0[i]);
11229	}
11230
11231	// joining the two area curves
11232	ctx.lineTo(curve1[len1 - 1].x, curve1[len1 - 1].y);
11233
11234	// building opposite area curve (reverse)
11235	for (i = len1 - 1; i > 0; --i) {
11236		helpers.canvas.lineTo(ctx, curve1[i], curve1[i - 1], true);
11237	}
11238}
11239
11240function doFill(ctx, points, mapper, view, color, loop) {
11241	var count = points.length;
11242	var span = view.spanGaps;
11243	var curve0 = [];
11244	var curve1 = [];
11245	var len0 = 0;
11246	var len1 = 0;
11247	var i, ilen, index, p0, p1, d0, d1;
11248
11249	ctx.beginPath();
11250
11251	for (i = 0, ilen = (count + !!loop); i < ilen; ++i) {
11252		index = i % count;
11253		p0 = points[index]._view;
11254		p1 = mapper(p0, index, view);
11255		d0 = isDrawable(p0);
11256		d1 = isDrawable(p1);
11257
11258		if (d0 && d1) {
11259			len0 = curve0.push(p0);
11260			len1 = curve1.push(p1);
11261		} else if (len0 && len1) {
11262			if (!span) {
11263				drawArea(ctx, curve0, curve1, len0, len1);
11264				len0 = len1 = 0;
11265				curve0 = [];
11266				curve1 = [];
11267			} else {
11268				if (d0) {
11269					curve0.push(p0);
11270				}
11271				if (d1) {
11272					curve1.push(p1);
11273				}
11274			}
11275		}
11276	}
11277
11278	drawArea(ctx, curve0, curve1, len0, len1);
11279
11280	ctx.closePath();
11281	ctx.fillStyle = color;
11282	ctx.fill();
11283}
11284
11285module.exports = {
11286	id: 'filler',
11287
11288	afterDatasetsUpdate: function(chart, options) {
11289		var count = (chart.data.datasets || []).length;
11290		var propagate = options.propagate;
11291		var sources = [];
11292		var meta, i, el, source;
11293
11294		for (i = 0; i < count; ++i) {
11295			meta = chart.getDatasetMeta(i);
11296			el = meta.dataset;
11297			source = null;
11298
11299			if (el && el._model && el instanceof elements.Line) {
11300				source = {
11301					visible: chart.isDatasetVisible(i),
11302					fill: decodeFill(el, i, count),
11303					chart: chart,
11304					el: el
11305				};
11306			}
11307
11308			meta.$filler = source;
11309			sources.push(source);
11310		}
11311
11312		for (i = 0; i < count; ++i) {
11313			source = sources[i];
11314			if (!source) {
11315				continue;
11316			}
11317
11318			source.fill = resolveTarget(sources, i, propagate);
11319			source.boundary = computeBoundary(source);
11320			source.mapper = createMapper(source);
11321		}
11322	},
11323
11324	beforeDatasetDraw: function(chart, args) {
11325		var meta = args.meta.$filler;
11326		if (!meta) {
11327			return;
11328		}
11329
11330		var ctx = chart.ctx;
11331		var el = meta.el;
11332		var view = el._view;
11333		var points = el._children || [];
11334		var mapper = meta.mapper;
11335		var color = view.backgroundColor || defaults.global.defaultColor;
11336
11337		if (mapper && color && points.length) {
11338			helpers.canvas.clipArea(ctx, chart.chartArea);
11339			doFill(ctx, points, mapper, view, color, el._loop);
11340			helpers.canvas.unclipArea(ctx);
11341		}
11342	}
11343};
11344
11345},{"25":25,"40":40,"45":45}],51:[function(require,module,exports){
11346'use strict';
11347
11348var defaults = require(25);
11349var Element = require(26);
11350var helpers = require(45);
11351var layouts = require(30);
11352
11353var noop = helpers.noop;
11354
11355defaults._set('global', {
11356	legend: {
11357		display: true,
11358		position: 'top',
11359		fullWidth: true,
11360		reverse: false,
11361		weight: 1000,
11362
11363		// a callback that will handle
11364		onClick: function(e, legendItem) {
11365			var index = legendItem.datasetIndex;
11366			var ci = this.chart;
11367			var meta = ci.getDatasetMeta(index);
11368
11369			// See controller.isDatasetVisible comment
11370			meta.hidden = meta.hidden === null ? !ci.data.datasets[index].hidden : null;
11371
11372			// We hid a dataset ... rerender the chart
11373			ci.update();
11374		},
11375
11376		onHover: null,
11377
11378		labels: {
11379			boxWidth: 40,
11380			padding: 10,
11381			// Generates labels shown in the legend
11382			// Valid properties to return:
11383			// text : text to display
11384			// fillStyle : fill of coloured box
11385			// strokeStyle: stroke of coloured box
11386			// hidden : if this legend item refers to a hidden item
11387			// lineCap : cap style for line
11388			// lineDash
11389			// lineDashOffset :
11390			// lineJoin :
11391			// lineWidth :
11392			generateLabels: function(chart) {
11393				var data = chart.data;
11394				return helpers.isArray(data.datasets) ? data.datasets.map(function(dataset, i) {
11395					return {
11396						text: dataset.label,
11397						fillStyle: (!helpers.isArray(dataset.backgroundColor) ? dataset.backgroundColor : dataset.backgroundColor[0]),
11398						hidden: !chart.isDatasetVisible(i),
11399						lineCap: dataset.borderCapStyle,
11400						lineDash: dataset.borderDash,
11401						lineDashOffset: dataset.borderDashOffset,
11402						lineJoin: dataset.borderJoinStyle,
11403						lineWidth: dataset.borderWidth,
11404						strokeStyle: dataset.borderColor,
11405						pointStyle: dataset.pointStyle,
11406
11407						// Below is extra data used for toggling the datasets
11408						datasetIndex: i
11409					};
11410				}, this) : [];
11411			}
11412		}
11413	},
11414
11415	legendCallback: function(chart) {
11416		var text = [];
11417		text.push('<ul class="' + chart.id + '-legend">');
11418		for (var i = 0; i < chart.data.datasets.length; i++) {
11419			text.push('<li><span style="background-color:' + chart.data.datasets[i].backgroundColor + '"></span>');
11420			if (chart.data.datasets[i].label) {
11421				text.push(chart.data.datasets[i].label);
11422			}
11423			text.push('</li>');
11424		}
11425		text.push('</ul>');
11426		return text.join('');
11427	}
11428});
11429
11430/**
11431 * Helper function to get the box width based on the usePointStyle option
11432 * @param labelopts {Object} the label options on the legend
11433 * @param fontSize {Number} the label font size
11434 * @return {Number} width of the color box area
11435 */
11436function getBoxWidth(labelOpts, fontSize) {
11437	return labelOpts.usePointStyle ?
11438		fontSize * Math.SQRT2 :
11439		labelOpts.boxWidth;
11440}
11441
11442/**
11443 * IMPORTANT: this class is exposed publicly as Chart.Legend, backward compatibility required!
11444 */
11445var Legend = Element.extend({
11446
11447	initialize: function(config) {
11448		helpers.extend(this, config);
11449
11450		// Contains hit boxes for each dataset (in dataset order)
11451		this.legendHitBoxes = [];
11452
11453		// Are we in doughnut mode which has a different data type
11454		this.doughnutMode = false;
11455	},
11456
11457	// These methods are ordered by lifecycle. Utilities then follow.
11458	// Any function defined here is inherited by all legend types.
11459	// Any function can be extended by the legend type
11460
11461	beforeUpdate: noop,
11462	update: function(maxWidth, maxHeight, margins) {
11463		var me = this;
11464
11465		// Update Lifecycle - Probably don't want to ever extend or overwrite this function ;)
11466		me.beforeUpdate();
11467
11468		// Absorb the master measurements
11469		me.maxWidth = maxWidth;
11470		me.maxHeight = maxHeight;
11471		me.margins = margins;
11472
11473		// Dimensions
11474		me.beforeSetDimensions();
11475		me.setDimensions();
11476		me.afterSetDimensions();
11477		// Labels
11478		me.beforeBuildLabels();
11479		me.buildLabels();
11480		me.afterBuildLabels();
11481
11482		// Fit
11483		me.beforeFit();
11484		me.fit();
11485		me.afterFit();
11486		//
11487		me.afterUpdate();
11488
11489		return me.minSize;
11490	},
11491	afterUpdate: noop,
11492
11493	//
11494
11495	beforeSetDimensions: noop,
11496	setDimensions: function() {
11497		var me = this;
11498		// Set the unconstrained dimension before label rotation
11499		if (me.isHorizontal()) {
11500			// Reset position before calculating rotation
11501			me.width = me.maxWidth;
11502			me.left = 0;
11503			me.right = me.width;
11504		} else {
11505			me.height = me.maxHeight;
11506
11507			// Reset position before calculating rotation
11508			me.top = 0;
11509			me.bottom = me.height;
11510		}
11511
11512		// Reset padding
11513		me.paddingLeft = 0;
11514		me.paddingTop = 0;
11515		me.paddingRight = 0;
11516		me.paddingBottom = 0;
11517
11518		// Reset minSize
11519		me.minSize = {
11520			width: 0,
11521			height: 0
11522		};
11523	},
11524	afterSetDimensions: noop,
11525
11526	//
11527
11528	beforeBuildLabels: noop,
11529	buildLabels: function() {
11530		var me = this;
11531		var labelOpts = me.options.labels || {};
11532		var legendItems = helpers.callback(labelOpts.generateLabels, [me.chart], me) || [];
11533
11534		if (labelOpts.filter) {
11535			legendItems = legendItems.filter(function(item) {
11536				return labelOpts.filter(item, me.chart.data);
11537			});
11538		}
11539
11540		if (me.options.reverse) {
11541			legendItems.reverse();
11542		}
11543
11544		me.legendItems = legendItems;
11545	},
11546	afterBuildLabels: noop,
11547
11548	//
11549
11550	beforeFit: noop,
11551	fit: function() {
11552		var me = this;
11553		var opts = me.options;
11554		var labelOpts = opts.labels;
11555		var display = opts.display;
11556
11557		var ctx = me.ctx;
11558
11559		var globalDefault = defaults.global;
11560		var valueOrDefault = helpers.valueOrDefault;
11561		var fontSize = valueOrDefault(labelOpts.fontSize, globalDefault.defaultFontSize);
11562		var fontStyle = valueOrDefault(labelOpts.fontStyle, globalDefault.defaultFontStyle);
11563		var fontFamily = valueOrDefault(labelOpts.fontFamily, globalDefault.defaultFontFamily);
11564		var labelFont = helpers.fontString(fontSize, fontStyle, fontFamily);
11565
11566		// Reset hit boxes
11567		var hitboxes = me.legendHitBoxes = [];
11568
11569		var minSize = me.minSize;
11570		var isHorizontal = me.isHorizontal();
11571
11572		if (isHorizontal) {
11573			minSize.width = me.maxWidth; // fill all the width
11574			minSize.height = display ? 10 : 0;
11575		} else {
11576			minSize.width = display ? 10 : 0;
11577			minSize.height = me.maxHeight; // fill all the height
11578		}
11579
11580		// Increase sizes here
11581		if (display) {
11582			ctx.font = labelFont;
11583
11584			if (isHorizontal) {
11585				// Labels
11586
11587				// Width of each line of legend boxes. Labels wrap onto multiple lines when there are too many to fit on one
11588				var lineWidths = me.lineWidths = [0];
11589				var totalHeight = me.legendItems.length ? fontSize + (labelOpts.padding) : 0;
11590
11591				ctx.textAlign = 'left';
11592				ctx.textBaseline = 'top';
11593
11594				helpers.each(me.legendItems, function(legendItem, i) {
11595					var boxWidth = getBoxWidth(labelOpts, fontSize);
11596					var width = boxWidth + (fontSize / 2) + ctx.measureText(legendItem.text).width;
11597
11598					if (lineWidths[lineWidths.length - 1] + width + labelOpts.padding >= me.width) {
11599						totalHeight += fontSize + (labelOpts.padding);
11600						lineWidths[lineWidths.length] = me.left;
11601					}
11602
11603					// Store the hitbox width and height here. Final position will be updated in `draw`
11604					hitboxes[i] = {
11605						left: 0,
11606						top: 0,
11607						width: width,
11608						height: fontSize
11609					};
11610
11611					lineWidths[lineWidths.length - 1] += width + labelOpts.padding;
11612				});
11613
11614				minSize.height += totalHeight;
11615
11616			} else {
11617				var vPadding = labelOpts.padding;
11618				var columnWidths = me.columnWidths = [];
11619				var totalWidth = labelOpts.padding;
11620				var currentColWidth = 0;
11621				var currentColHeight = 0;
11622				var itemHeight = fontSize + vPadding;
11623
11624				helpers.each(me.legendItems, function(legendItem, i) {
11625					var boxWidth = getBoxWidth(labelOpts, fontSize);
11626					var itemWidth = boxWidth + (fontSize / 2) + ctx.measureText(legendItem.text).width;
11627
11628					// If too tall, go to new column
11629					if (currentColHeight + itemHeight > minSize.height) {
11630						totalWidth += currentColWidth + labelOpts.padding;
11631						columnWidths.push(currentColWidth); // previous column width
11632
11633						currentColWidth = 0;
11634						currentColHeight = 0;
11635					}
11636
11637					// Get max width
11638					currentColWidth = Math.max(currentColWidth, itemWidth);
11639					currentColHeight += itemHeight;
11640
11641					// Store the hitbox width and height here. Final position will be updated in `draw`
11642					hitboxes[i] = {
11643						left: 0,
11644						top: 0,
11645						width: itemWidth,
11646						height: fontSize
11647					};
11648				});
11649
11650				totalWidth += currentColWidth;
11651				columnWidths.push(currentColWidth);
11652				minSize.width += totalWidth;
11653			}
11654		}
11655
11656		me.width = minSize.width;
11657		me.height = minSize.height;
11658	},
11659	afterFit: noop,
11660
11661	// Shared Methods
11662	isHorizontal: function() {
11663		return this.options.position === 'top' || this.options.position === 'bottom';
11664	},
11665
11666	// Actually draw the legend on the canvas
11667	draw: function() {
11668		var me = this;
11669		var opts = me.options;
11670		var labelOpts = opts.labels;
11671		var globalDefault = defaults.global;
11672		var lineDefault = globalDefault.elements.line;
11673		var legendWidth = me.width;
11674		var lineWidths = me.lineWidths;
11675
11676		if (opts.display) {
11677			var ctx = me.ctx;
11678			var valueOrDefault = helpers.valueOrDefault;
11679			var fontColor = valueOrDefault(labelOpts.fontColor, globalDefault.defaultFontColor);
11680			var fontSize = valueOrDefault(labelOpts.fontSize, globalDefault.defaultFontSize);
11681			var fontStyle = valueOrDefault(labelOpts.fontStyle, globalDefault.defaultFontStyle);
11682			var fontFamily = valueOrDefault(labelOpts.fontFamily, globalDefault.defaultFontFamily);
11683			var labelFont = helpers.fontString(fontSize, fontStyle, fontFamily);
11684			var cursor;
11685
11686			// Canvas setup
11687			ctx.textAlign = 'left';
11688			ctx.textBaseline = 'middle';
11689			ctx.lineWidth = 0.5;
11690			ctx.strokeStyle = fontColor; // for strikethrough effect
11691			ctx.fillStyle = fontColor; // render in correct colour
11692			ctx.font = labelFont;
11693
11694			var boxWidth = getBoxWidth(labelOpts, fontSize);
11695			var hitboxes = me.legendHitBoxes;
11696
11697			// current position
11698			var drawLegendBox = function(x, y, legendItem) {
11699				if (isNaN(boxWidth) || boxWidth <= 0) {
11700					return;
11701				}
11702
11703				// Set the ctx for the box
11704				ctx.save();
11705
11706				ctx.fillStyle = valueOrDefault(legendItem.fillStyle, globalDefault.defaultColor);
11707				ctx.lineCap = valueOrDefault(legendItem.lineCap, lineDefault.borderCapStyle);
11708				ctx.lineDashOffset = valueOrDefault(legendItem.lineDashOffset, lineDefault.borderDashOffset);
11709				ctx.lineJoin = valueOrDefault(legendItem.lineJoin, lineDefault.borderJoinStyle);
11710				ctx.lineWidth = valueOrDefault(legendItem.lineWidth, lineDefault.borderWidth);
11711				ctx.strokeStyle = valueOrDefault(legendItem.strokeStyle, globalDefault.defaultColor);
11712				var isLineWidthZero = (valueOrDefault(legendItem.lineWidth, lineDefault.borderWidth) === 0);
11713
11714				if (ctx.setLineDash) {
11715					// IE 9 and 10 do not support line dash
11716					ctx.setLineDash(valueOrDefault(legendItem.lineDash, lineDefault.borderDash));
11717				}
11718
11719				if (opts.labels && opts.labels.usePointStyle) {
11720					// Recalculate x and y for drawPoint() because its expecting
11721					// x and y to be center of figure (instead of top left)
11722					var radius = fontSize * Math.SQRT2 / 2;
11723					var offSet = radius / Math.SQRT2;
11724					var centerX = x + offSet;
11725					var centerY = y + offSet;
11726
11727					// Draw pointStyle as legend symbol
11728					helpers.canvas.drawPoint(ctx, legendItem.pointStyle, radius, centerX, centerY);
11729				} else {
11730					// Draw box as legend symbol
11731					if (!isLineWidthZero) {
11732						ctx.strokeRect(x, y, boxWidth, fontSize);
11733					}
11734					ctx.fillRect(x, y, boxWidth, fontSize);
11735				}
11736
11737				ctx.restore();
11738			};
11739			var fillText = function(x, y, legendItem, textWidth) {
11740				var halfFontSize = fontSize / 2;
11741				var xLeft = boxWidth + halfFontSize + x;
11742				var yMiddle = y + halfFontSize;
11743
11744				ctx.fillText(legendItem.text, xLeft, yMiddle);
11745
11746				if (legendItem.hidden) {
11747					// Strikethrough the text if hidden
11748					ctx.beginPath();
11749					ctx.lineWidth = 2;
11750					ctx.moveTo(xLeft, yMiddle);
11751					ctx.lineTo(xLeft + textWidth, yMiddle);
11752					ctx.stroke();
11753				}
11754			};
11755
11756			// Horizontal
11757			var isHorizontal = me.isHorizontal();
11758			if (isHorizontal) {
11759				cursor = {
11760					x: me.left + ((legendWidth - lineWidths[0]) / 2),
11761					y: me.top + labelOpts.padding,
11762					line: 0
11763				};
11764			} else {
11765				cursor = {
11766					x: me.left + labelOpts.padding,
11767					y: me.top + labelOpts.padding,
11768					line: 0
11769				};
11770			}
11771
11772			var itemHeight = fontSize + labelOpts.padding;
11773			helpers.each(me.legendItems, function(legendItem, i) {
11774				var textWidth = ctx.measureText(legendItem.text).width;
11775				var width = boxWidth + (fontSize / 2) + textWidth;
11776				var x = cursor.x;
11777				var y = cursor.y;
11778
11779				if (isHorizontal) {
11780					if (x + width >= legendWidth) {
11781						y = cursor.y += itemHeight;
11782						cursor.line++;
11783						x = cursor.x = me.left + ((legendWidth - lineWidths[cursor.line]) / 2);
11784					}
11785				} else if (y + itemHeight > me.bottom) {
11786					x = cursor.x = x + me.columnWidths[cursor.line] + labelOpts.padding;
11787					y = cursor.y = me.top + labelOpts.padding;
11788					cursor.line++;
11789				}
11790
11791				drawLegendBox(x, y, legendItem);
11792
11793				hitboxes[i].left = x;
11794				hitboxes[i].top = y;
11795
11796				// Fill the actual label
11797				fillText(x, y, legendItem, textWidth);
11798
11799				if (isHorizontal) {
11800					cursor.x += width + (labelOpts.padding);
11801				} else {
11802					cursor.y += itemHeight;
11803				}
11804
11805			});
11806		}
11807	},
11808
11809	/**
11810	 * Handle an event
11811	 * @private
11812	 * @param {IEvent} event - The event to handle
11813	 * @return {Boolean} true if a change occured
11814	 */
11815	handleEvent: function(e) {
11816		var me = this;
11817		var opts = me.options;
11818		var type = e.type === 'mouseup' ? 'click' : e.type;
11819		var changed = false;
11820
11821		if (type === 'mousemove') {
11822			if (!opts.onHover) {
11823				return;
11824			}
11825		} else if (type === 'click') {
11826			if (!opts.onClick) {
11827				return;
11828			}
11829		} else {
11830			return;
11831		}
11832
11833		// Chart event already has relative position in it
11834		var x = e.x;
11835		var y = e.y;
11836
11837		if (x >= me.left && x <= me.right && y >= me.top && y <= me.bottom) {
11838			// See if we are touching one of the dataset boxes
11839			var lh = me.legendHitBoxes;
11840			for (var i = 0; i < lh.length; ++i) {
11841				var hitBox = lh[i];
11842
11843				if (x >= hitBox.left && x <= hitBox.left + hitBox.width && y >= hitBox.top && y <= hitBox.top + hitBox.height) {
11844					// Touching an element
11845					if (type === 'click') {
11846						// use e.native for backwards compatibility
11847						opts.onClick.call(me, e.native, me.legendItems[i]);
11848						changed = true;
11849						break;
11850					} else if (type === 'mousemove') {
11851						// use e.native for backwards compatibility
11852						opts.onHover.call(me, e.native, me.legendItems[i]);
11853						changed = true;
11854						break;
11855					}
11856				}
11857			}
11858		}
11859
11860		return changed;
11861	}
11862});
11863
11864function createNewLegendAndAttach(chart, legendOpts) {
11865	var legend = new Legend({
11866		ctx: chart.ctx,
11867		options: legendOpts,
11868		chart: chart
11869	});
11870
11871	layouts.configure(chart, legend, legendOpts);
11872	layouts.addBox(chart, legend);
11873	chart.legend = legend;
11874}
11875
11876module.exports = {
11877	id: 'legend',
11878
11879	/**
11880	 * Backward compatibility: since 2.1.5, the legend is registered as a plugin, making
11881	 * Chart.Legend obsolete. To avoid a breaking change, we export the Legend as part of
11882	 * the plugin, which one will be re-exposed in the chart.js file.
11883	 * https://github.com/chartjs/Chart.js/pull/2640
11884	 * @private
11885	 */
11886	_element: Legend,
11887
11888	beforeInit: function(chart) {
11889		var legendOpts = chart.options.legend;
11890
11891		if (legendOpts) {
11892			createNewLegendAndAttach(chart, legendOpts);
11893		}
11894	},
11895
11896	beforeUpdate: function(chart) {
11897		var legendOpts = chart.options.legend;
11898		var legend = chart.legend;
11899
11900		if (legendOpts) {
11901			helpers.mergeIf(legendOpts, defaults.global.legend);
11902
11903			if (legend) {
11904				layouts.configure(chart, legend, legendOpts);
11905				legend.options = legendOpts;
11906			} else {
11907				createNewLegendAndAttach(chart, legendOpts);
11908			}
11909		} else if (legend) {
11910			layouts.removeBox(chart, legend);
11911			delete chart.legend;
11912		}
11913	},
11914
11915	afterEvent: function(chart, e) {
11916		var legend = chart.legend;
11917		if (legend) {
11918			legend.handleEvent(e);
11919		}
11920	}
11921};
11922
11923},{"25":25,"26":26,"30":30,"45":45}],52:[function(require,module,exports){
11924'use strict';
11925
11926var defaults = require(25);
11927var Element = require(26);
11928var helpers = require(45);
11929var layouts = require(30);
11930
11931var noop = helpers.noop;
11932
11933defaults._set('global', {
11934	title: {
11935		display: false,
11936		fontStyle: 'bold',
11937		fullWidth: true,
11938		lineHeight: 1.2,
11939		padding: 10,
11940		position: 'top',
11941		text: '',
11942		weight: 2000         // by default greater than legend (1000) to be above
11943	}
11944});
11945
11946/**
11947 * IMPORTANT: this class is exposed publicly as Chart.Legend, backward compatibility required!
11948 */
11949var Title = Element.extend({
11950	initialize: function(config) {
11951		var me = this;
11952		helpers.extend(me, config);
11953
11954		// Contains hit boxes for each dataset (in dataset order)
11955		me.legendHitBoxes = [];
11956	},
11957
11958	// These methods are ordered by lifecycle. Utilities then follow.
11959
11960	beforeUpdate: noop,
11961	update: function(maxWidth, maxHeight, margins) {
11962		var me = this;
11963
11964		// Update Lifecycle - Probably don't want to ever extend or overwrite this function ;)
11965		me.beforeUpdate();
11966
11967		// Absorb the master measurements
11968		me.maxWidth = maxWidth;
11969		me.maxHeight = maxHeight;
11970		me.margins = margins;
11971
11972		// Dimensions
11973		me.beforeSetDimensions();
11974		me.setDimensions();
11975		me.afterSetDimensions();
11976		// Labels
11977		me.beforeBuildLabels();
11978		me.buildLabels();
11979		me.afterBuildLabels();
11980
11981		// Fit
11982		me.beforeFit();
11983		me.fit();
11984		me.afterFit();
11985		//
11986		me.afterUpdate();
11987
11988		return me.minSize;
11989
11990	},
11991	afterUpdate: noop,
11992
11993	//
11994
11995	beforeSetDimensions: noop,
11996	setDimensions: function() {
11997		var me = this;
11998		// Set the unconstrained dimension before label rotation
11999		if (me.isHorizontal()) {
12000			// Reset position before calculating rotation
12001			me.width = me.maxWidth;
12002			me.left = 0;
12003			me.right = me.width;
12004		} else {
12005			me.height = me.maxHeight;
12006
12007			// Reset position before calculating rotation
12008			me.top = 0;
12009			me.bottom = me.height;
12010		}
12011
12012		// Reset padding
12013		me.paddingLeft = 0;
12014		me.paddingTop = 0;
12015		me.paddingRight = 0;
12016		me.paddingBottom = 0;
12017
12018		// Reset minSize
12019		me.minSize = {
12020			width: 0,
12021			height: 0
12022		};
12023	},
12024	afterSetDimensions: noop,
12025
12026	//
12027
12028	beforeBuildLabels: noop,
12029	buildLabels: noop,
12030	afterBuildLabels: noop,
12031
12032	//
12033
12034	beforeFit: noop,
12035	fit: function() {
12036		var me = this;
12037		var valueOrDefault = helpers.valueOrDefault;
12038		var opts = me.options;
12039		var display = opts.display;
12040		var fontSize = valueOrDefault(opts.fontSize, defaults.global.defaultFontSize);
12041		var minSize = me.minSize;
12042		var lineCount = helpers.isArray(opts.text) ? opts.text.length : 1;
12043		var lineHeight = helpers.options.toLineHeight(opts.lineHeight, fontSize);
12044		var textSize = display ? (lineCount * lineHeight) + (opts.padding * 2) : 0;
12045
12046		if (me.isHorizontal()) {
12047			minSize.width = me.maxWidth; // fill all the width
12048			minSize.height = textSize;
12049		} else {
12050			minSize.width = textSize;
12051			minSize.height = me.maxHeight; // fill all the height
12052		}
12053
12054		me.width = minSize.width;
12055		me.height = minSize.height;
12056
12057	},
12058	afterFit: noop,
12059
12060	// Shared Methods
12061	isHorizontal: function() {
12062		var pos = this.options.position;
12063		return pos === 'top' || pos === 'bottom';
12064	},
12065
12066	// Actually draw the title block on the canvas
12067	draw: function() {
12068		var me = this;
12069		var ctx = me.ctx;
12070		var valueOrDefault = helpers.valueOrDefault;
12071		var opts = me.options;
12072		var globalDefaults = defaults.global;
12073
12074		if (opts.display) {
12075			var fontSize = valueOrDefault(opts.fontSize, globalDefaults.defaultFontSize);
12076			var fontStyle = valueOrDefault(opts.fontStyle, globalDefaults.defaultFontStyle);
12077			var fontFamily = valueOrDefault(opts.fontFamily, globalDefaults.defaultFontFamily);
12078			var titleFont = helpers.fontString(fontSize, fontStyle, fontFamily);
12079			var lineHeight = helpers.options.toLineHeight(opts.lineHeight, fontSize);
12080			var offset = lineHeight / 2 + opts.padding;
12081			var rotation = 0;
12082			var top = me.top;
12083			var left = me.left;
12084			var bottom = me.bottom;
12085			var right = me.right;
12086			var maxWidth, titleX, titleY;
12087
12088			ctx.fillStyle = valueOrDefault(opts.fontColor, globalDefaults.defaultFontColor); // render in correct colour
12089			ctx.font = titleFont;
12090
12091			// Horizontal
12092			if (me.isHorizontal()) {
12093				titleX = left + ((right - left) / 2); // midpoint of the width
12094				titleY = top + offset;
12095				maxWidth = right - left;
12096			} else {
12097				titleX = opts.position === 'left' ? left + offset : right - offset;
12098				titleY = top + ((bottom - top) / 2);
12099				maxWidth = bottom - top;
12100				rotation = Math.PI * (opts.position === 'left' ? -0.5 : 0.5);
12101			}
12102
12103			ctx.save();
12104			ctx.translate(titleX, titleY);
12105			ctx.rotate(rotation);
12106			ctx.textAlign = 'center';
12107			ctx.textBaseline = 'middle';
12108
12109			var text = opts.text;
12110			if (helpers.isArray(text)) {
12111				var y = 0;
12112				for (var i = 0; i < text.length; ++i) {
12113					ctx.fillText(text[i], 0, y, maxWidth);
12114					y += lineHeight;
12115				}
12116			} else {
12117				ctx.fillText(text, 0, 0, maxWidth);
12118			}
12119
12120			ctx.restore();
12121		}
12122	}
12123});
12124
12125function createNewTitleBlockAndAttach(chart, titleOpts) {
12126	var title = new Title({
12127		ctx: chart.ctx,
12128		options: titleOpts,
12129		chart: chart
12130	});
12131
12132	layouts.configure(chart, title, titleOpts);
12133	layouts.addBox(chart, title);
12134	chart.titleBlock = title;
12135}
12136
12137module.exports = {
12138	id: 'title',
12139
12140	/**
12141	 * Backward compatibility: since 2.1.5, the title is registered as a plugin, making
12142	 * Chart.Title obsolete. To avoid a breaking change, we export the Title as part of
12143	 * the plugin, which one will be re-exposed in the chart.js file.
12144	 * https://github.com/chartjs/Chart.js/pull/2640
12145	 * @private
12146	 */
12147	_element: Title,
12148
12149	beforeInit: function(chart) {
12150		var titleOpts = chart.options.title;
12151
12152		if (titleOpts) {
12153			createNewTitleBlockAndAttach(chart, titleOpts);
12154		}
12155	},
12156
12157	beforeUpdate: function(chart) {
12158		var titleOpts = chart.options.title;
12159		var titleBlock = chart.titleBlock;
12160
12161		if (titleOpts) {
12162			helpers.mergeIf(titleOpts, defaults.global.title);
12163
12164			if (titleBlock) {
12165				layouts.configure(chart, titleBlock, titleOpts);
12166				titleBlock.options = titleOpts;
12167			} else {
12168				createNewTitleBlockAndAttach(chart, titleOpts);
12169			}
12170		} else if (titleBlock) {
12171			layouts.removeBox(chart, titleBlock);
12172			delete chart.titleBlock;
12173		}
12174	}
12175};
12176
12177},{"25":25,"26":26,"30":30,"45":45}],53:[function(require,module,exports){
12178'use strict';
12179
12180module.exports = function(Chart) {
12181
12182	// Default config for a category scale
12183	var defaultConfig = {
12184		position: 'bottom'
12185	};
12186
12187	var DatasetScale = Chart.Scale.extend({
12188		/**
12189		* Internal function to get the correct labels. If data.xLabels or data.yLabels are defined, use those
12190		* else fall back to data.labels
12191		* @private
12192		*/
12193		getLabels: function() {
12194			var data = this.chart.data;
12195			return this.options.labels || (this.isHorizontal() ? data.xLabels : data.yLabels) || data.labels;
12196		},
12197
12198		determineDataLimits: function() {
12199			var me = this;
12200			var labels = me.getLabels();
12201			me.minIndex = 0;
12202			me.maxIndex = labels.length - 1;
12203			var findIndex;
12204
12205			if (me.options.ticks.min !== undefined) {
12206				// user specified min value
12207				findIndex = labels.indexOf(me.options.ticks.min);
12208				me.minIndex = findIndex !== -1 ? findIndex : me.minIndex;
12209			}
12210
12211			if (me.options.ticks.max !== undefined) {
12212				// user specified max value
12213				findIndex = labels.indexOf(me.options.ticks.max);
12214				me.maxIndex = findIndex !== -1 ? findIndex : me.maxIndex;
12215			}
12216
12217			me.min = labels[me.minIndex];
12218			me.max = labels[me.maxIndex];
12219		},
12220
12221		buildTicks: function() {
12222			var me = this;
12223			var labels = me.getLabels();
12224			// If we are viewing some subset of labels, slice the original array
12225			me.ticks = (me.minIndex === 0 && me.maxIndex === labels.length - 1) ? labels : labels.slice(me.minIndex, me.maxIndex + 1);
12226		},
12227
12228		getLabelForIndex: function(index, datasetIndex) {
12229			var me = this;
12230			var data = me.chart.data;
12231			var isHorizontal = me.isHorizontal();
12232
12233			if (data.yLabels && !isHorizontal) {
12234				return me.getRightValue(data.datasets[datasetIndex].data[index]);
12235			}
12236			return me.ticks[index - me.minIndex];
12237		},
12238
12239		// Used to get data value locations.  Value can either be an index or a numerical value
12240		getPixelForValue: function(value, index) {
12241			var me = this;
12242			var offset = me.options.offset;
12243			// 1 is added because we need the length but we have the indexes
12244			var offsetAmt = Math.max((me.maxIndex + 1 - me.minIndex - (offset ? 0 : 1)), 1);
12245
12246			// If value is a data object, then index is the index in the data array,
12247			// not the index of the scale. We need to change that.
12248			var valueCategory;
12249			if (value !== undefined && value !== null) {
12250				valueCategory = me.isHorizontal() ? value.x : value.y;
12251			}
12252			if (valueCategory !== undefined || (value !== undefined && isNaN(index))) {
12253				var labels = me.getLabels();
12254				value = valueCategory || value;
12255				var idx = labels.indexOf(value);
12256				index = idx !== -1 ? idx : index;
12257			}
12258
12259			if (me.isHorizontal()) {
12260				var valueWidth = me.width / offsetAmt;
12261				var widthOffset = (valueWidth * (index - me.minIndex));
12262
12263				if (offset) {
12264					widthOffset += (valueWidth / 2);
12265				}
12266
12267				return me.left + Math.round(widthOffset);
12268			}
12269			var valueHeight = me.height / offsetAmt;
12270			var heightOffset = (valueHeight * (index - me.minIndex));
12271
12272			if (offset) {
12273				heightOffset += (valueHeight / 2);
12274			}
12275
12276			return me.top + Math.round(heightOffset);
12277		},
12278		getPixelForTick: function(index) {
12279			return this.getPixelForValue(this.ticks[index], index + this.minIndex, null);
12280		},
12281		getValueForPixel: function(pixel) {
12282			var me = this;
12283			var offset = me.options.offset;
12284			var value;
12285			var offsetAmt = Math.max((me._ticks.length - (offset ? 0 : 1)), 1);
12286			var horz = me.isHorizontal();
12287			var valueDimension = (horz ? me.width : me.height) / offsetAmt;
12288
12289			pixel -= horz ? me.left : me.top;
12290
12291			if (offset) {
12292				pixel -= (valueDimension / 2);
12293			}
12294
12295			if (pixel <= 0) {
12296				value = 0;
12297			} else {
12298				value = Math.round(pixel / valueDimension);
12299			}
12300
12301			return value + me.minIndex;
12302		},
12303		getBasePixel: function() {
12304			return this.bottom;
12305		}
12306	});
12307
12308	Chart.scaleService.registerScaleType('category', DatasetScale, defaultConfig);
12309
12310};
12311
12312},{}],54:[function(require,module,exports){
12313'use strict';
12314
12315var defaults = require(25);
12316var helpers = require(45);
12317var Ticks = require(34);
12318
12319module.exports = function(Chart) {
12320
12321	var defaultConfig = {
12322		position: 'left',
12323		ticks: {
12324			callback: Ticks.formatters.linear
12325		}
12326	};
12327
12328	var LinearScale = Chart.LinearScaleBase.extend({
12329
12330		determineDataLimits: function() {
12331			var me = this;
12332			var opts = me.options;
12333			var chart = me.chart;
12334			var data = chart.data;
12335			var datasets = data.datasets;
12336			var isHorizontal = me.isHorizontal();
12337			var DEFAULT_MIN = 0;
12338			var DEFAULT_MAX = 1;
12339
12340			function IDMatches(meta) {
12341				return isHorizontal ? meta.xAxisID === me.id : meta.yAxisID === me.id;
12342			}
12343
12344			// First Calculate the range
12345			me.min = null;
12346			me.max = null;
12347
12348			var hasStacks = opts.stacked;
12349			if (hasStacks === undefined) {
12350				helpers.each(datasets, function(dataset, datasetIndex) {
12351					if (hasStacks) {
12352						return;
12353					}
12354
12355					var meta = chart.getDatasetMeta(datasetIndex);
12356					if (chart.isDatasetVisible(datasetIndex) && IDMatches(meta) &&
12357						meta.stack !== undefined) {
12358						hasStacks = true;
12359					}
12360				});
12361			}
12362
12363			if (opts.stacked || hasStacks) {
12364				var valuesPerStack = {};
12365
12366				helpers.each(datasets, function(dataset, datasetIndex) {
12367					var meta = chart.getDatasetMeta(datasetIndex);
12368					var key = [
12369						meta.type,
12370						// we have a separate stack for stack=undefined datasets when the opts.stacked is undefined
12371						((opts.stacked === undefined && meta.stack === undefined) ? datasetIndex : ''),
12372						meta.stack
12373					].join('.');
12374
12375					if (valuesPerStack[key] === undefined) {
12376						valuesPerStack[key] = {
12377							positiveValues: [],
12378							negativeValues: []
12379						};
12380					}
12381
12382					// Store these per type
12383					var positiveValues = valuesPerStack[key].positiveValues;
12384					var negativeValues = valuesPerStack[key].negativeValues;
12385
12386					if (chart.isDatasetVisible(datasetIndex) && IDMatches(meta)) {
12387						helpers.each(dataset.data, function(rawValue, index) {
12388							var value = +me.getRightValue(rawValue);
12389							if (isNaN(value) || meta.data[index].hidden) {
12390								return;
12391							}
12392
12393							positiveValues[index] = positiveValues[index] || 0;
12394							negativeValues[index] = negativeValues[index] || 0;
12395
12396							if (opts.relativePoints) {
12397								positiveValues[index] = 100;
12398							} else if (value < 0) {
12399								negativeValues[index] += value;
12400							} else {
12401								positiveValues[index] += value;
12402							}
12403						});
12404					}
12405				});
12406
12407				helpers.each(valuesPerStack, function(valuesForType) {
12408					var values = valuesForType.positiveValues.concat(valuesForType.negativeValues);
12409					var minVal = helpers.min(values);
12410					var maxVal = helpers.max(values);
12411					me.min = me.min === null ? minVal : Math.min(me.min, minVal);
12412					me.max = me.max === null ? maxVal : Math.max(me.max, maxVal);
12413				});
12414
12415			} else {
12416				helpers.each(datasets, function(dataset, datasetIndex) {
12417					var meta = chart.getDatasetMeta(datasetIndex);
12418					if (chart.isDatasetVisible(datasetIndex) && IDMatches(meta)) {
12419						helpers.each(dataset.data, function(rawValue, index) {
12420							var value = +me.getRightValue(rawValue);
12421							if (isNaN(value) || meta.data[index].hidden) {
12422								return;
12423							}
12424
12425							if (me.min === null) {
12426								me.min = value;
12427							} else if (value < me.min) {
12428								me.min = value;
12429							}
12430
12431							if (me.max === null) {
12432								me.max = value;
12433							} else if (value > me.max) {
12434								me.max = value;
12435							}
12436						});
12437					}
12438				});
12439			}
12440
12441			me.min = isFinite(me.min) && !isNaN(me.min) ? me.min : DEFAULT_MIN;
12442			me.max = isFinite(me.max) && !isNaN(me.max) ? me.max : DEFAULT_MAX;
12443
12444			// Common base implementation to handle ticks.min, ticks.max, ticks.beginAtZero
12445			this.handleTickRangeOptions();
12446		},
12447		getTickLimit: function() {
12448			var maxTicks;
12449			var me = this;
12450			var tickOpts = me.options.ticks;
12451
12452			if (me.isHorizontal()) {
12453				maxTicks = Math.min(tickOpts.maxTicksLimit ? tickOpts.maxTicksLimit : 11, Math.ceil(me.width / 50));
12454			} else {
12455				// The factor of 2 used to scale the font size has been experimentally determined.
12456				var tickFontSize = helpers.valueOrDefault(tickOpts.fontSize, defaults.global.defaultFontSize);
12457				maxTicks = Math.min(tickOpts.maxTicksLimit ? tickOpts.maxTicksLimit : 11, Math.ceil(me.height / (2 * tickFontSize)));
12458			}
12459
12460			return maxTicks;
12461		},
12462		// Called after the ticks are built. We need
12463		handleDirectionalChanges: function() {
12464			if (!this.isHorizontal()) {
12465				// We are in a vertical orientation. The top value is the highest. So reverse the array
12466				this.ticks.reverse();
12467			}
12468		},
12469		getLabelForIndex: function(index, datasetIndex) {
12470			return +this.getRightValue(this.chart.data.datasets[datasetIndex].data[index]);
12471		},
12472		// Utils
12473		getPixelForValue: function(value) {
12474			// This must be called after fit has been run so that
12475			// this.left, this.top, this.right, and this.bottom have been defined
12476			var me = this;
12477			var start = me.start;
12478
12479			var rightValue = +me.getRightValue(value);
12480			var pixel;
12481			var range = me.end - start;
12482
12483			if (me.isHorizontal()) {
12484				pixel = me.left + (me.width / range * (rightValue - start));
12485			} else {
12486				pixel = me.bottom - (me.height / range * (rightValue - start));
12487			}
12488			return pixel;
12489		},
12490		getValueForPixel: function(pixel) {
12491			var me = this;
12492			var isHorizontal = me.isHorizontal();
12493			var innerDimension = isHorizontal ? me.width : me.height;
12494			var offset = (isHorizontal ? pixel - me.left : me.bottom - pixel) / innerDimension;
12495			return me.start + ((me.end - me.start) * offset);
12496		},
12497		getPixelForTick: function(index) {
12498			return this.getPixelForValue(this.ticksAsNumbers[index]);
12499		}
12500	});
12501	Chart.scaleService.registerScaleType('linear', LinearScale, defaultConfig);
12502
12503};
12504
12505},{"25":25,"34":34,"45":45}],55:[function(require,module,exports){
12506'use strict';
12507
12508var helpers = require(45);
12509
12510/**
12511 * Generate a set of linear ticks
12512 * @param generationOptions the options used to generate the ticks
12513 * @param dataRange the range of the data
12514 * @returns {Array<Number>} array of tick values
12515 */
12516function generateTicks(generationOptions, dataRange) {
12517	var ticks = [];
12518	// To get a "nice" value for the tick spacing, we will use the appropriately named
12519	// "nice number" algorithm. See http://stackoverflow.com/questions/8506881/nice-label-algorithm-for-charts-with-minimum-ticks
12520	// for details.
12521
12522	var spacing;
12523	if (generationOptions.stepSize && generationOptions.stepSize > 0) {
12524		spacing = generationOptions.stepSize;
12525	} else {
12526		var niceRange = helpers.niceNum(dataRange.max - dataRange.min, false);
12527		spacing = helpers.niceNum(niceRange / (generationOptions.maxTicks - 1), true);
12528	}
12529	var niceMin = Math.floor(dataRange.min / spacing) * spacing;
12530	var niceMax = Math.ceil(dataRange.max / spacing) * spacing;
12531
12532	// If min, max and stepSize is set and they make an evenly spaced scale use it.
12533	if (generationOptions.min && generationOptions.max && generationOptions.stepSize) {
12534		// If very close to our whole number, use it.
12535		if (helpers.almostWhole((generationOptions.max - generationOptions.min) / generationOptions.stepSize, spacing / 1000)) {
12536			niceMin = generationOptions.min;
12537			niceMax = generationOptions.max;
12538		}
12539	}
12540
12541	var numSpaces = (niceMax - niceMin) / spacing;
12542	// If very close to our rounded value, use it.
12543	if (helpers.almostEquals(numSpaces, Math.round(numSpaces), spacing / 1000)) {
12544		numSpaces = Math.round(numSpaces);
12545	} else {
12546		numSpaces = Math.ceil(numSpaces);
12547	}
12548
12549	var precision = 1;
12550	if (spacing < 1) {
12551		precision = Math.pow(10, spacing.toString().length - 2);
12552		niceMin = Math.round(niceMin * precision) / precision;
12553		niceMax = Math.round(niceMax * precision) / precision;
12554	}
12555	ticks.push(generationOptions.min !== undefined ? generationOptions.min : niceMin);
12556	for (var j = 1; j < numSpaces; ++j) {
12557		ticks.push(Math.round((niceMin + j * spacing) * precision) / precision);
12558	}
12559	ticks.push(generationOptions.max !== undefined ? generationOptions.max : niceMax);
12560
12561	return ticks;
12562}
12563
12564
12565module.exports = function(Chart) {
12566
12567	var noop = helpers.noop;
12568
12569	Chart.LinearScaleBase = Chart.Scale.extend({
12570		getRightValue: function(value) {
12571			if (typeof value === 'string') {
12572				return +value;
12573			}
12574			return Chart.Scale.prototype.getRightValue.call(this, value);
12575		},
12576
12577		handleTickRangeOptions: function() {
12578			var me = this;
12579			var opts = me.options;
12580			var tickOpts = opts.ticks;
12581
12582			// If we are forcing it to begin at 0, but 0 will already be rendered on the chart,
12583			// do nothing since that would make the chart weird. If the user really wants a weird chart
12584			// axis, they can manually override it
12585			if (tickOpts.beginAtZero) {
12586				var minSign = helpers.sign(me.min);
12587				var maxSign = helpers.sign(me.max);
12588
12589				if (minSign < 0 && maxSign < 0) {
12590					// move the top up to 0
12591					me.max = 0;
12592				} else if (minSign > 0 && maxSign > 0) {
12593					// move the bottom down to 0
12594					me.min = 0;
12595				}
12596			}
12597
12598			var setMin = tickOpts.min !== undefined || tickOpts.suggestedMin !== undefined;
12599			var setMax = tickOpts.max !== undefined || tickOpts.suggestedMax !== undefined;
12600
12601			if (tickOpts.min !== undefined) {
12602				me.min = tickOpts.min;
12603			} else if (tickOpts.suggestedMin !== undefined) {
12604				if (me.min === null) {
12605					me.min = tickOpts.suggestedMin;
12606				} else {
12607					me.min = Math.min(me.min, tickOpts.suggestedMin);
12608				}
12609			}
12610
12611			if (tickOpts.max !== undefined) {
12612				me.max = tickOpts.max;
12613			} else if (tickOpts.suggestedMax !== undefined) {
12614				if (me.max === null) {
12615					me.max = tickOpts.suggestedMax;
12616				} else {
12617					me.max = Math.max(me.max, tickOpts.suggestedMax);
12618				}
12619			}
12620
12621			if (setMin !== setMax) {
12622				// We set the min or the max but not both.
12623				// So ensure that our range is good
12624				// Inverted or 0 length range can happen when
12625				// ticks.min is set, and no datasets are visible
12626				if (me.min >= me.max) {
12627					if (setMin) {
12628						me.max = me.min + 1;
12629					} else {
12630						me.min = me.max - 1;
12631					}
12632				}
12633			}
12634
12635			if (me.min === me.max) {
12636				me.max++;
12637
12638				if (!tickOpts.beginAtZero) {
12639					me.min--;
12640				}
12641			}
12642		},
12643		getTickLimit: noop,
12644		handleDirectionalChanges: noop,
12645
12646		buildTicks: function() {
12647			var me = this;
12648			var opts = me.options;
12649			var tickOpts = opts.ticks;
12650
12651			// Figure out what the max number of ticks we can support it is based on the size of
12652			// the axis area. For now, we say that the minimum tick spacing in pixels must be 50
12653			// We also limit the maximum number of ticks to 11 which gives a nice 10 squares on
12654			// the graph. Make sure we always have at least 2 ticks
12655			var maxTicks = me.getTickLimit();
12656			maxTicks = Math.max(2, maxTicks);
12657
12658			var numericGeneratorOptions = {
12659				maxTicks: maxTicks,
12660				min: tickOpts.min,
12661				max: tickOpts.max,
12662				stepSize: helpers.valueOrDefault(tickOpts.fixedStepSize, tickOpts.stepSize)
12663			};
12664			var ticks = me.ticks = generateTicks(numericGeneratorOptions, me);
12665
12666			me.handleDirectionalChanges();
12667
12668			// At this point, we need to update our max and min given the tick values since we have expanded the
12669			// range of the scale
12670			me.max = helpers.max(ticks);
12671			me.min = helpers.min(ticks);
12672
12673			if (tickOpts.reverse) {
12674				ticks.reverse();
12675
12676				me.start = me.max;
12677				me.end = me.min;
12678			} else {
12679				me.start = me.min;
12680				me.end = me.max;
12681			}
12682		},
12683		convertTicksToLabels: function() {
12684			var me = this;
12685			me.ticksAsNumbers = me.ticks.slice();
12686			me.zeroLineIndex = me.ticks.indexOf(0);
12687
12688			Chart.Scale.prototype.convertTicksToLabels.call(me);
12689		}
12690	});
12691};
12692
12693},{"45":45}],56:[function(require,module,exports){
12694'use strict';
12695
12696var helpers = require(45);
12697var Ticks = require(34);
12698
12699/**
12700 * Generate a set of logarithmic ticks
12701 * @param generationOptions the options used to generate the ticks
12702 * @param dataRange the range of the data
12703 * @returns {Array<Number>} array of tick values
12704 */
12705function generateTicks(generationOptions, dataRange) {
12706	var ticks = [];
12707	var valueOrDefault = helpers.valueOrDefault;
12708
12709	// Figure out what the max number of ticks we can support it is based on the size of
12710	// the axis area. For now, we say that the minimum tick spacing in pixels must be 50
12711	// We also limit the maximum number of ticks to 11 which gives a nice 10 squares on
12712	// the graph
12713	var tickVal = valueOrDefault(generationOptions.min, Math.pow(10, Math.floor(helpers.log10(dataRange.min))));
12714
12715	var endExp = Math.floor(helpers.log10(dataRange.max));
12716	var endSignificand = Math.ceil(dataRange.max / Math.pow(10, endExp));
12717	var exp, significand;
12718
12719	if (tickVal === 0) {
12720		exp = Math.floor(helpers.log10(dataRange.minNotZero));
12721		significand = Math.floor(dataRange.minNotZero / Math.pow(10, exp));
12722
12723		ticks.push(tickVal);
12724		tickVal = significand * Math.pow(10, exp);
12725	} else {
12726		exp = Math.floor(helpers.log10(tickVal));
12727		significand = Math.floor(tickVal / Math.pow(10, exp));
12728	}
12729	var precision = exp < 0 ? Math.pow(10, Math.abs(exp)) : 1;
12730
12731	do {
12732		ticks.push(tickVal);
12733
12734		++significand;
12735		if (significand === 10) {
12736			significand = 1;
12737			++exp;
12738			precision = exp >= 0 ? 1 : precision;
12739		}
12740
12741		tickVal = Math.round(significand * Math.pow(10, exp) * precision) / precision;
12742	} while (exp < endExp || (exp === endExp && significand < endSignificand));
12743
12744	var lastTick = valueOrDefault(generationOptions.max, tickVal);
12745	ticks.push(lastTick);
12746
12747	return ticks;
12748}
12749
12750
12751module.exports = function(Chart) {
12752
12753	var defaultConfig = {
12754		position: 'left',
12755
12756		// label settings
12757		ticks: {
12758			callback: Ticks.formatters.logarithmic
12759		}
12760	};
12761
12762	var LogarithmicScale = Chart.Scale.extend({
12763		determineDataLimits: function() {
12764			var me = this;
12765			var opts = me.options;
12766			var chart = me.chart;
12767			var data = chart.data;
12768			var datasets = data.datasets;
12769			var isHorizontal = me.isHorizontal();
12770			function IDMatches(meta) {
12771				return isHorizontal ? meta.xAxisID === me.id : meta.yAxisID === me.id;
12772			}
12773
12774			// Calculate Range
12775			me.min = null;
12776			me.max = null;
12777			me.minNotZero = null;
12778
12779			var hasStacks = opts.stacked;
12780			if (hasStacks === undefined) {
12781				helpers.each(datasets, function(dataset, datasetIndex) {
12782					if (hasStacks) {
12783						return;
12784					}
12785
12786					var meta = chart.getDatasetMeta(datasetIndex);
12787					if (chart.isDatasetVisible(datasetIndex) && IDMatches(meta) &&
12788						meta.stack !== undefined) {
12789						hasStacks = true;
12790					}
12791				});
12792			}
12793
12794			if (opts.stacked || hasStacks) {
12795				var valuesPerStack = {};
12796
12797				helpers.each(datasets, function(dataset, datasetIndex) {
12798					var meta = chart.getDatasetMeta(datasetIndex);
12799					var key = [
12800						meta.type,
12801						// we have a separate stack for stack=undefined datasets when the opts.stacked is undefined
12802						((opts.stacked === undefined && meta.stack === undefined) ? datasetIndex : ''),
12803						meta.stack
12804					].join('.');
12805
12806					if (chart.isDatasetVisible(datasetIndex) && IDMatches(meta)) {
12807						if (valuesPerStack[key] === undefined) {
12808							valuesPerStack[key] = [];
12809						}
12810
12811						helpers.each(dataset.data, function(rawValue, index) {
12812							var values = valuesPerStack[key];
12813							var value = +me.getRightValue(rawValue);
12814							// invalid, hidden and negative values are ignored
12815							if (isNaN(value) || meta.data[index].hidden || value < 0) {
12816								return;
12817							}
12818							values[index] = values[index] || 0;
12819							values[index] += value;
12820						});
12821					}
12822				});
12823
12824				helpers.each(valuesPerStack, function(valuesForType) {
12825					if (valuesForType.length > 0) {
12826						var minVal = helpers.min(valuesForType);
12827						var maxVal = helpers.max(valuesForType);
12828						me.min = me.min === null ? minVal : Math.min(me.min, minVal);
12829						me.max = me.max === null ? maxVal : Math.max(me.max, maxVal);
12830					}
12831				});
12832
12833			} else {
12834				helpers.each(datasets, function(dataset, datasetIndex) {
12835					var meta = chart.getDatasetMeta(datasetIndex);
12836					if (chart.isDatasetVisible(datasetIndex) && IDMatches(meta)) {
12837						helpers.each(dataset.data, function(rawValue, index) {
12838							var value = +me.getRightValue(rawValue);
12839							// invalid, hidden and negative values are ignored
12840							if (isNaN(value) || meta.data[index].hidden || value < 0) {
12841								return;
12842							}
12843
12844							if (me.min === null) {
12845								me.min = value;
12846							} else if (value < me.min) {
12847								me.min = value;
12848							}
12849
12850							if (me.max === null) {
12851								me.max = value;
12852							} else if (value > me.max) {
12853								me.max = value;
12854							}
12855
12856							if (value !== 0 && (me.minNotZero === null || value < me.minNotZero)) {
12857								me.minNotZero = value;
12858							}
12859						});
12860					}
12861				});
12862			}
12863
12864			// Common base implementation to handle ticks.min, ticks.max
12865			this.handleTickRangeOptions();
12866		},
12867		handleTickRangeOptions: function() {
12868			var me = this;
12869			var opts = me.options;
12870			var tickOpts = opts.ticks;
12871			var valueOrDefault = helpers.valueOrDefault;
12872			var DEFAULT_MIN = 1;
12873			var DEFAULT_MAX = 10;
12874
12875			me.min = valueOrDefault(tickOpts.min, me.min);
12876			me.max = valueOrDefault(tickOpts.max, me.max);
12877
12878			if (me.min === me.max) {
12879				if (me.min !== 0 && me.min !== null) {
12880					me.min = Math.pow(10, Math.floor(helpers.log10(me.min)) - 1);
12881					me.max = Math.pow(10, Math.floor(helpers.log10(me.max)) + 1);
12882				} else {
12883					me.min = DEFAULT_MIN;
12884					me.max = DEFAULT_MAX;
12885				}
12886			}
12887			if (me.min === null) {
12888				me.min = Math.pow(10, Math.floor(helpers.log10(me.max)) - 1);
12889			}
12890			if (me.max === null) {
12891				me.max = me.min !== 0
12892					? Math.pow(10, Math.floor(helpers.log10(me.min)) + 1)
12893					: DEFAULT_MAX;
12894			}
12895			if (me.minNotZero === null) {
12896				if (me.min > 0) {
12897					me.minNotZero = me.min;
12898				} else if (me.max < 1) {
12899					me.minNotZero = Math.pow(10, Math.floor(helpers.log10(me.max)));
12900				} else {
12901					me.minNotZero = DEFAULT_MIN;
12902				}
12903			}
12904		},
12905		buildTicks: function() {
12906			var me = this;
12907			var opts = me.options;
12908			var tickOpts = opts.ticks;
12909			var reverse = !me.isHorizontal();
12910
12911			var generationOptions = {
12912				min: tickOpts.min,
12913				max: tickOpts.max
12914			};
12915			var ticks = me.ticks = generateTicks(generationOptions, me);
12916
12917			// At this point, we need to update our max and min given the tick values since we have expanded the
12918			// range of the scale
12919			me.max = helpers.max(ticks);
12920			me.min = helpers.min(ticks);
12921
12922			if (tickOpts.reverse) {
12923				reverse = !reverse;
12924				me.start = me.max;
12925				me.end = me.min;
12926			} else {
12927				me.start = me.min;
12928				me.end = me.max;
12929			}
12930			if (reverse) {
12931				ticks.reverse();
12932			}
12933		},
12934		convertTicksToLabels: function() {
12935			this.tickValues = this.ticks.slice();
12936
12937			Chart.Scale.prototype.convertTicksToLabels.call(this);
12938		},
12939		// Get the correct tooltip label
12940		getLabelForIndex: function(index, datasetIndex) {
12941			return +this.getRightValue(this.chart.data.datasets[datasetIndex].data[index]);
12942		},
12943		getPixelForTick: function(index) {
12944			return this.getPixelForValue(this.tickValues[index]);
12945		},
12946		/**
12947		 * Returns the value of the first tick.
12948		 * @param {Number} value - The minimum not zero value.
12949		 * @return {Number} The first tick value.
12950		 * @private
12951		 */
12952		_getFirstTickValue: function(value) {
12953			var exp = Math.floor(helpers.log10(value));
12954			var significand = Math.floor(value / Math.pow(10, exp));
12955
12956			return significand * Math.pow(10, exp);
12957		},
12958		getPixelForValue: function(value) {
12959			var me = this;
12960			var reverse = me.options.ticks.reverse;
12961			var log10 = helpers.log10;
12962			var firstTickValue = me._getFirstTickValue(me.minNotZero);
12963			var offset = 0;
12964			var innerDimension, pixel, start, end, sign;
12965
12966			value = +me.getRightValue(value);
12967			if (reverse) {
12968				start = me.end;
12969				end = me.start;
12970				sign = -1;
12971			} else {
12972				start = me.start;
12973				end = me.end;
12974				sign = 1;
12975			}
12976			if (me.isHorizontal()) {
12977				innerDimension = me.width;
12978				pixel = reverse ? me.right : me.left;
12979			} else {
12980				innerDimension = me.height;
12981				sign *= -1; // invert, since the upper-left corner of the canvas is at pixel (0, 0)
12982				pixel = reverse ? me.top : me.bottom;
12983			}
12984			if (value !== start) {
12985				if (start === 0) { // include zero tick
12986					offset = helpers.getValueOrDefault(
12987						me.options.ticks.fontSize,
12988						Chart.defaults.global.defaultFontSize
12989					);
12990					innerDimension -= offset;
12991					start = firstTickValue;
12992				}
12993				if (value !== 0) {
12994					offset += innerDimension / (log10(end) - log10(start)) * (log10(value) - log10(start));
12995				}
12996				pixel += sign * offset;
12997			}
12998			return pixel;
12999		},
13000		getValueForPixel: function(pixel) {
13001			var me = this;
13002			var reverse = me.options.ticks.reverse;
13003			var log10 = helpers.log10;
13004			var firstTickValue = me._getFirstTickValue(me.minNotZero);
13005			var innerDimension, start, end, value;
13006
13007			if (reverse) {
13008				start = me.end;
13009				end = me.start;
13010			} else {
13011				start = me.start;
13012				end = me.end;
13013			}
13014			if (me.isHorizontal()) {
13015				innerDimension = me.width;
13016				value = reverse ? me.right - pixel : pixel - me.left;
13017			} else {
13018				innerDimension = me.height;
13019				value = reverse ? pixel - me.top : me.bottom - pixel;
13020			}
13021			if (value !== start) {
13022				if (start === 0) { // include zero tick
13023					var offset = helpers.getValueOrDefault(
13024						me.options.ticks.fontSize,
13025						Chart.defaults.global.defaultFontSize
13026					);
13027					value -= offset;
13028					innerDimension -= offset;
13029					start = firstTickValue;
13030				}
13031				value *= log10(end) - log10(start);
13032				value /= innerDimension;
13033				value = Math.pow(10, log10(start) + value);
13034			}
13035			return value;
13036		}
13037	});
13038	Chart.scaleService.registerScaleType('logarithmic', LogarithmicScale, defaultConfig);
13039
13040};
13041
13042},{"34":34,"45":45}],57:[function(require,module,exports){
13043'use strict';
13044
13045var defaults = require(25);
13046var helpers = require(45);
13047var Ticks = require(34);
13048
13049module.exports = function(Chart) {
13050
13051	var globalDefaults = defaults.global;
13052
13053	var defaultConfig = {
13054		display: true,
13055
13056		// Boolean - Whether to animate scaling the chart from the centre
13057		animate: true,
13058		position: 'chartArea',
13059
13060		angleLines: {
13061			display: true,
13062			color: 'rgba(0, 0, 0, 0.1)',
13063			lineWidth: 1
13064		},
13065
13066		gridLines: {
13067			circular: false
13068		},
13069
13070		// label settings
13071		ticks: {
13072			// Boolean - Show a backdrop to the scale label
13073			showLabelBackdrop: true,
13074
13075			// String - The colour of the label backdrop
13076			backdropColor: 'rgba(255,255,255,0.75)',
13077
13078			// Number - The backdrop padding above & below the label in pixels
13079			backdropPaddingY: 2,
13080
13081			// Number - The backdrop padding to the side of the label in pixels
13082			backdropPaddingX: 2,
13083
13084			callback: Ticks.formatters.linear
13085		},
13086
13087		pointLabels: {
13088			// Boolean - if true, show point labels
13089			display: true,
13090
13091			// Number - Point label font size in pixels
13092			fontSize: 10,
13093
13094			// Function - Used to convert point labels
13095			callback: function(label) {
13096				return label;
13097			}
13098		}
13099	};
13100
13101	function getValueCount(scale) {
13102		var opts = scale.options;
13103		return opts.angleLines.display || opts.pointLabels.display ? scale.chart.data.labels.length : 0;
13104	}
13105
13106	function getPointLabelFontOptions(scale) {
13107		var pointLabelOptions = scale.options.pointLabels;
13108		var fontSize = helpers.valueOrDefault(pointLabelOptions.fontSize, globalDefaults.defaultFontSize);
13109		var fontStyle = helpers.valueOrDefault(pointLabelOptions.fontStyle, globalDefaults.defaultFontStyle);
13110		var fontFamily = helpers.valueOrDefault(pointLabelOptions.fontFamily, globalDefaults.defaultFontFamily);
13111		var font = helpers.fontString(fontSize, fontStyle, fontFamily);
13112
13113		return {
13114			size: fontSize,
13115			style: fontStyle,
13116			family: fontFamily,
13117			font: font
13118		};
13119	}
13120
13121	function measureLabelSize(ctx, fontSize, label) {
13122		if (helpers.isArray(label)) {
13123			return {
13124				w: helpers.longestText(ctx, ctx.font, label),
13125				h: (label.length * fontSize) + ((label.length - 1) * 1.5 * fontSize)
13126			};
13127		}
13128
13129		return {
13130			w: ctx.measureText(label).width,
13131			h: fontSize
13132		};
13133	}
13134
13135	function determineLimits(angle, pos, size, min, max) {
13136		if (angle === min || angle === max) {
13137			return {
13138				start: pos - (size / 2),
13139				end: pos + (size / 2)
13140			};
13141		} else if (angle < min || angle > max) {
13142			return {
13143				start: pos - size - 5,
13144				end: pos
13145			};
13146		}
13147
13148		return {
13149			start: pos,
13150			end: pos + size + 5
13151		};
13152	}
13153
13154	/**
13155	 * Helper function to fit a radial linear scale with point labels
13156	 */
13157	function fitWithPointLabels(scale) {
13158		/*
13159		 * Right, this is really confusing and there is a lot of maths going on here
13160		 * The gist of the problem is here: https://gist.github.com/nnnick/696cc9c55f4b0beb8fe9
13161		 *
13162		 * Reaction: https://dl.dropboxusercontent.com/u/34601363/toomuchscience.gif
13163		 *
13164		 * Solution:
13165		 *
13166		 * We assume the radius of the polygon is half the size of the canvas at first
13167		 * at each index we check if the text overlaps.
13168		 *
13169		 * Where it does, we store that angle and that index.
13170		 *
13171		 * After finding the largest index and angle we calculate how much we need to remove
13172		 * from the shape radius to move the point inwards by that x.
13173		 *
13174		 * We average the left and right distances to get the maximum shape radius that can fit in the box
13175		 * along with labels.
13176		 *
13177		 * Once we have that, we can find the centre point for the chart, by taking the x text protrusion
13178		 * on each side, removing that from the size, halving it and adding the left x protrusion width.
13179		 *
13180		 * This will mean we have a shape fitted to the canvas, as large as it can be with the labels
13181		 * and position it in the most space efficient manner
13182		 *
13183		 * https://dl.dropboxusercontent.com/u/34601363/yeahscience.gif
13184		 */
13185
13186		var plFont = getPointLabelFontOptions(scale);
13187
13188		// Get maximum radius of the polygon. Either half the height (minus the text width) or half the width.
13189		// Use this to calculate the offset + change. - Make sure L/R protrusion is at least 0 to stop issues with centre points
13190		var largestPossibleRadius = Math.min(scale.height / 2, scale.width / 2);
13191		var furthestLimits = {
13192			r: scale.width,
13193			l: 0,
13194			t: scale.height,
13195			b: 0
13196		};
13197		var furthestAngles = {};
13198		var i, textSize, pointPosition;
13199
13200		scale.ctx.font = plFont.font;
13201		scale._pointLabelSizes = [];
13202
13203		var valueCount = getValueCount(scale);
13204		for (i = 0; i < valueCount; i++) {
13205			pointPosition = scale.getPointPosition(i, largestPossibleRadius);
13206			textSize = measureLabelSize(scale.ctx, plFont.size, scale.pointLabels[i] || '');
13207			scale._pointLabelSizes[i] = textSize;
13208
13209			// Add quarter circle to make degree 0 mean top of circle
13210			var angleRadians = scale.getIndexAngle(i);
13211			var angle = helpers.toDegrees(angleRadians) % 360;
13212			var hLimits = determineLimits(angle, pointPosition.x, textSize.w, 0, 180);
13213			var vLimits = determineLimits(angle, pointPosition.y, textSize.h, 90, 270);
13214
13215			if (hLimits.start < furthestLimits.l) {
13216				furthestLimits.l = hLimits.start;
13217				furthestAngles.l = angleRadians;
13218			}
13219
13220			if (hLimits.end > furthestLimits.r) {
13221				furthestLimits.r = hLimits.end;
13222				furthestAngles.r = angleRadians;
13223			}
13224
13225			if (vLimits.start < furthestLimits.t) {
13226				furthestLimits.t = vLimits.start;
13227				furthestAngles.t = angleRadians;
13228			}
13229
13230			if (vLimits.end > furthestLimits.b) {
13231				furthestLimits.b = vLimits.end;
13232				furthestAngles.b = angleRadians;
13233			}
13234		}
13235
13236		scale.setReductions(largestPossibleRadius, furthestLimits, furthestAngles);
13237	}
13238
13239	/**
13240	 * Helper function to fit a radial linear scale with no point labels
13241	 */
13242	function fit(scale) {
13243		var largestPossibleRadius = Math.min(scale.height / 2, scale.width / 2);
13244		scale.drawingArea = Math.round(largestPossibleRadius);
13245		scale.setCenterPoint(0, 0, 0, 0);
13246	}
13247
13248	function getTextAlignForAngle(angle) {
13249		if (angle === 0 || angle === 180) {
13250			return 'center';
13251		} else if (angle < 180) {
13252			return 'left';
13253		}
13254
13255		return 'right';
13256	}
13257
13258	function fillText(ctx, text, position, fontSize) {
13259		if (helpers.isArray(text)) {
13260			var y = position.y;
13261			var spacing = 1.5 * fontSize;
13262
13263			for (var i = 0; i < text.length; ++i) {
13264				ctx.fillText(text[i], position.x, y);
13265				y += spacing;
13266			}
13267		} else {
13268			ctx.fillText(text, position.x, position.y);
13269		}
13270	}
13271
13272	function adjustPointPositionForLabelHeight(angle, textSize, position) {
13273		if (angle === 90 || angle === 270) {
13274			position.y -= (textSize.h / 2);
13275		} else if (angle > 270 || angle < 90) {
13276			position.y -= textSize.h;
13277		}
13278	}
13279
13280	function drawPointLabels(scale) {
13281		var ctx = scale.ctx;
13282		var valueOrDefault = helpers.valueOrDefault;
13283		var opts = scale.options;
13284		var angleLineOpts = opts.angleLines;
13285		var pointLabelOpts = opts.pointLabels;
13286
13287		ctx.lineWidth = angleLineOpts.lineWidth;
13288		ctx.strokeStyle = angleLineOpts.color;
13289
13290		var outerDistance = scale.getDistanceFromCenterForValue(opts.ticks.reverse ? scale.min : scale.max);
13291
13292		// Point Label Font
13293		var plFont = getPointLabelFontOptions(scale);
13294
13295		ctx.textBaseline = 'top';
13296
13297		for (var i = getValueCount(scale) - 1; i >= 0; i--) {
13298			if (angleLineOpts.display) {
13299				var outerPosition = scale.getPointPosition(i, outerDistance);
13300				ctx.beginPath();
13301				ctx.moveTo(scale.xCenter, scale.yCenter);
13302				ctx.lineTo(outerPosition.x, outerPosition.y);
13303				ctx.stroke();
13304				ctx.closePath();
13305			}
13306
13307			if (pointLabelOpts.display) {
13308				// Extra 3px out for some label spacing
13309				var pointLabelPosition = scale.getPointPosition(i, outerDistance + 5);
13310
13311				// Keep this in loop since we may support array properties here
13312				var pointLabelFontColor = valueOrDefault(pointLabelOpts.fontColor, globalDefaults.defaultFontColor);
13313				ctx.font = plFont.font;
13314				ctx.fillStyle = pointLabelFontColor;
13315
13316				var angleRadians = scale.getIndexAngle(i);
13317				var angle = helpers.toDegrees(angleRadians);
13318				ctx.textAlign = getTextAlignForAngle(angle);
13319				adjustPointPositionForLabelHeight(angle, scale._pointLabelSizes[i], pointLabelPosition);
13320				fillText(ctx, scale.pointLabels[i] || '', pointLabelPosition, plFont.size);
13321			}
13322		}
13323	}
13324
13325	function drawRadiusLine(scale, gridLineOpts, radius, index) {
13326		var ctx = scale.ctx;
13327		ctx.strokeStyle = helpers.valueAtIndexOrDefault(gridLineOpts.color, index - 1);
13328		ctx.lineWidth = helpers.valueAtIndexOrDefault(gridLineOpts.lineWidth, index - 1);
13329
13330		if (scale.options.gridLines.circular) {
13331			// Draw circular arcs between the points
13332			ctx.beginPath();
13333			ctx.arc(scale.xCenter, scale.yCenter, radius, 0, Math.PI * 2);
13334			ctx.closePath();
13335			ctx.stroke();
13336		} else {
13337			// Draw straight lines connecting each index
13338			var valueCount = getValueCount(scale);
13339
13340			if (valueCount === 0) {
13341				return;
13342			}
13343
13344			ctx.beginPath();
13345			var pointPosition = scale.getPointPosition(0, radius);
13346			ctx.moveTo(pointPosition.x, pointPosition.y);
13347
13348			for (var i = 1; i < valueCount; i++) {
13349				pointPosition = scale.getPointPosition(i, radius);
13350				ctx.lineTo(pointPosition.x, pointPosition.y);
13351			}
13352
13353			ctx.closePath();
13354			ctx.stroke();
13355		}
13356	}
13357
13358	function numberOrZero(param) {
13359		return helpers.isNumber(param) ? param : 0;
13360	}
13361
13362	var LinearRadialScale = Chart.LinearScaleBase.extend({
13363		setDimensions: function() {
13364			var me = this;
13365			var opts = me.options;
13366			var tickOpts = opts.ticks;
13367			// Set the unconstrained dimension before label rotation
13368			me.width = me.maxWidth;
13369			me.height = me.maxHeight;
13370			me.xCenter = Math.round(me.width / 2);
13371			me.yCenter = Math.round(me.height / 2);
13372
13373			var minSize = helpers.min([me.height, me.width]);
13374			var tickFontSize = helpers.valueOrDefault(tickOpts.fontSize, globalDefaults.defaultFontSize);
13375			me.drawingArea = opts.display ? (minSize / 2) - (tickFontSize / 2 + tickOpts.backdropPaddingY) : (minSize / 2);
13376		},
13377		determineDataLimits: function() {
13378			var me = this;
13379			var chart = me.chart;
13380			var min = Number.POSITIVE_INFINITY;
13381			var max = Number.NEGATIVE_INFINITY;
13382
13383			helpers.each(chart.data.datasets, function(dataset, datasetIndex) {
13384				if (chart.isDatasetVisible(datasetIndex)) {
13385					var meta = chart.getDatasetMeta(datasetIndex);
13386
13387					helpers.each(dataset.data, function(rawValue, index) {
13388						var value = +me.getRightValue(rawValue);
13389						if (isNaN(value) || meta.data[index].hidden) {
13390							return;
13391						}
13392
13393						min = Math.min(value, min);
13394						max = Math.max(value, max);
13395					});
13396				}
13397			});
13398
13399			me.min = (min === Number.POSITIVE_INFINITY ? 0 : min);
13400			me.max = (max === Number.NEGATIVE_INFINITY ? 0 : max);
13401
13402			// Common base implementation to handle ticks.min, ticks.max, ticks.beginAtZero
13403			me.handleTickRangeOptions();
13404		},
13405		getTickLimit: function() {
13406			var tickOpts = this.options.ticks;
13407			var tickFontSize = helpers.valueOrDefault(tickOpts.fontSize, globalDefaults.defaultFontSize);
13408			return Math.min(tickOpts.maxTicksLimit ? tickOpts.maxTicksLimit : 11, Math.ceil(this.drawingArea / (1.5 * tickFontSize)));
13409		},
13410		convertTicksToLabels: function() {
13411			var me = this;
13412
13413			Chart.LinearScaleBase.prototype.convertTicksToLabels.call(me);
13414
13415			// Point labels
13416			me.pointLabels = me.chart.data.labels.map(me.options.pointLabels.callback, me);
13417		},
13418		getLabelForIndex: function(index, datasetIndex) {
13419			return +this.getRightValue(this.chart.data.datasets[datasetIndex].data[index]);
13420		},
13421		fit: function() {
13422			if (this.options.pointLabels.display) {
13423				fitWithPointLabels(this);
13424			} else {
13425				fit(this);
13426			}
13427		},
13428		/**
13429		 * Set radius reductions and determine new radius and center point
13430		 * @private
13431		 */
13432		setReductions: function(largestPossibleRadius, furthestLimits, furthestAngles) {
13433			var me = this;
13434			var radiusReductionLeft = furthestLimits.l / Math.sin(furthestAngles.l);
13435			var radiusReductionRight = Math.max(furthestLimits.r - me.width, 0) / Math.sin(furthestAngles.r);
13436			var radiusReductionTop = -furthestLimits.t / Math.cos(furthestAngles.t);
13437			var radiusReductionBottom = -Math.max(furthestLimits.b - me.height, 0) / Math.cos(furthestAngles.b);
13438
13439			radiusReductionLeft = numberOrZero(radiusReductionLeft);
13440			radiusReductionRight = numberOrZero(radiusReductionRight);
13441			radiusReductionTop = numberOrZero(radiusReductionTop);
13442			radiusReductionBottom = numberOrZero(radiusReductionBottom);
13443
13444			me.drawingArea = Math.min(
13445				Math.round(largestPossibleRadius - (radiusReductionLeft + radiusReductionRight) / 2),
13446				Math.round(largestPossibleRadius - (radiusReductionTop + radiusReductionBottom) / 2));
13447			me.setCenterPoint(radiusReductionLeft, radiusReductionRight, radiusReductionTop, radiusReductionBottom);
13448		},
13449		setCenterPoint: function(leftMovement, rightMovement, topMovement, bottomMovement) {
13450			var me = this;
13451			var maxRight = me.width - rightMovement - me.drawingArea;
13452			var maxLeft = leftMovement + me.drawingArea;
13453			var maxTop = topMovement + me.drawingArea;
13454			var maxBottom = me.height - bottomMovement - me.drawingArea;
13455
13456			me.xCenter = Math.round(((maxLeft + maxRight) / 2) + me.left);
13457			me.yCenter = Math.round(((maxTop + maxBottom) / 2) + me.top);
13458		},
13459
13460		getIndexAngle: function(index) {
13461			var angleMultiplier = (Math.PI * 2) / getValueCount(this);
13462			var startAngle = this.chart.options && this.chart.options.startAngle ?
13463				this.chart.options.startAngle :
13464				0;
13465
13466			var startAngleRadians = startAngle * Math.PI * 2 / 360;
13467
13468			// Start from the top instead of right, so remove a quarter of the circle
13469			return index * angleMultiplier + startAngleRadians;
13470		},
13471		getDistanceFromCenterForValue: function(value) {
13472			var me = this;
13473
13474			if (value === null) {
13475				return 0; // null always in center
13476			}
13477
13478			// Take into account half font size + the yPadding of the top value
13479			var scalingFactor = me.drawingArea / (me.max - me.min);
13480			if (me.options.ticks.reverse) {
13481				return (me.max - value) * scalingFactor;
13482			}
13483			return (value - me.min) * scalingFactor;
13484		},
13485		getPointPosition: function(index, distanceFromCenter) {
13486			var me = this;
13487			var thisAngle = me.getIndexAngle(index) - (Math.PI / 2);
13488			return {
13489				x: Math.round(Math.cos(thisAngle) * distanceFromCenter) + me.xCenter,
13490				y: Math.round(Math.sin(thisAngle) * distanceFromCenter) + me.yCenter
13491			};
13492		},
13493		getPointPositionForValue: function(index, value) {
13494			return this.getPointPosition(index, this.getDistanceFromCenterForValue(value));
13495		},
13496
13497		getBasePosition: function() {
13498			var me = this;
13499			var min = me.min;
13500			var max = me.max;
13501
13502			return me.getPointPositionForValue(0,
13503				me.beginAtZero ? 0 :
13504				min < 0 && max < 0 ? max :
13505				min > 0 && max > 0 ? min :
13506				0);
13507		},
13508
13509		draw: function() {
13510			var me = this;
13511			var opts = me.options;
13512			var gridLineOpts = opts.gridLines;
13513			var tickOpts = opts.ticks;
13514			var valueOrDefault = helpers.valueOrDefault;
13515
13516			if (opts.display) {
13517				var ctx = me.ctx;
13518				var startAngle = this.getIndexAngle(0);
13519
13520				// Tick Font
13521				var tickFontSize = valueOrDefault(tickOpts.fontSize, globalDefaults.defaultFontSize);
13522				var tickFontStyle = valueOrDefault(tickOpts.fontStyle, globalDefaults.defaultFontStyle);
13523				var tickFontFamily = valueOrDefault(tickOpts.fontFamily, globalDefaults.defaultFontFamily);
13524				var tickLabelFont = helpers.fontString(tickFontSize, tickFontStyle, tickFontFamily);
13525
13526				helpers.each(me.ticks, function(label, index) {
13527					// Don't draw a centre value (if it is minimum)
13528					if (index > 0 || tickOpts.reverse) {
13529						var yCenterOffset = me.getDistanceFromCenterForValue(me.ticksAsNumbers[index]);
13530
13531						// Draw circular lines around the scale
13532						if (gridLineOpts.display && index !== 0) {
13533							drawRadiusLine(me, gridLineOpts, yCenterOffset, index);
13534						}
13535
13536						if (tickOpts.display) {
13537							var tickFontColor = valueOrDefault(tickOpts.fontColor, globalDefaults.defaultFontColor);
13538							ctx.font = tickLabelFont;
13539
13540							ctx.save();
13541							ctx.translate(me.xCenter, me.yCenter);
13542							ctx.rotate(startAngle);
13543
13544							if (tickOpts.showLabelBackdrop) {
13545								var labelWidth = ctx.measureText(label).width;
13546								ctx.fillStyle = tickOpts.backdropColor;
13547								ctx.fillRect(
13548									-labelWidth / 2 - tickOpts.backdropPaddingX,
13549									-yCenterOffset - tickFontSize / 2 - tickOpts.backdropPaddingY,
13550									labelWidth + tickOpts.backdropPaddingX * 2,
13551									tickFontSize + tickOpts.backdropPaddingY * 2
13552								);
13553							}
13554
13555							ctx.textAlign = 'center';
13556							ctx.textBaseline = 'middle';
13557							ctx.fillStyle = tickFontColor;
13558							ctx.fillText(label, 0, -yCenterOffset);
13559							ctx.restore();
13560						}
13561					}
13562				});
13563
13564				if (opts.angleLines.display || opts.pointLabels.display) {
13565					drawPointLabels(me);
13566				}
13567			}
13568		}
13569	});
13570	Chart.scaleService.registerScaleType('radialLinear', LinearRadialScale, defaultConfig);
13571
13572};
13573
13574},{"25":25,"34":34,"45":45}],58:[function(require,module,exports){
13575/* global window: false */
13576'use strict';
13577
13578var moment = require(1);
13579moment = typeof moment === 'function' ? moment : window.moment;
13580
13581var defaults = require(25);
13582var helpers = require(45);
13583
13584// Integer constants are from the ES6 spec.
13585var MIN_INTEGER = Number.MIN_SAFE_INTEGER || -9007199254740991;
13586var MAX_INTEGER = Number.MAX_SAFE_INTEGER || 9007199254740991;
13587
13588var INTERVALS = {
13589	millisecond: {
13590		common: true,
13591		size: 1,
13592		steps: [1, 2, 5, 10, 20, 50, 100, 250, 500]
13593	},
13594	second: {
13595		common: true,
13596		size: 1000,
13597		steps: [1, 2, 5, 10, 30]
13598	},
13599	minute: {
13600		common: true,
13601		size: 60000,
13602		steps: [1, 2, 5, 10, 30]
13603	},
13604	hour: {
13605		common: true,
13606		size: 3600000,
13607		steps: [1, 2, 3, 6, 12]
13608	},
13609	day: {
13610		common: true,
13611		size: 86400000,
13612		steps: [1, 2, 5]
13613	},
13614	week: {
13615		common: false,
13616		size: 604800000,
13617		steps: [1, 2, 3, 4]
13618	},
13619	month: {
13620		common: true,
13621		size: 2.628e9,
13622		steps: [1, 2, 3]
13623	},
13624	quarter: {
13625		common: false,
13626		size: 7.884e9,
13627		steps: [1, 2, 3, 4]
13628	},
13629	year: {
13630		common: true,
13631		size: 3.154e10
13632	}
13633};
13634
13635var UNITS = Object.keys(INTERVALS);
13636
13637function sorter(a, b) {
13638	return a - b;
13639}
13640
13641function arrayUnique(items) {
13642	var hash = {};
13643	var out = [];
13644	var i, ilen, item;
13645
13646	for (i = 0, ilen = items.length; i < ilen; ++i) {
13647		item = items[i];
13648		if (!hash[item]) {
13649			hash[item] = true;
13650			out.push(item);
13651		}
13652	}
13653
13654	return out;
13655}
13656
13657/**
13658 * Returns an array of {time, pos} objects used to interpolate a specific `time` or position
13659 * (`pos`) on the scale, by searching entries before and after the requested value. `pos` is
13660 * a decimal between 0 and 1: 0 being the start of the scale (left or top) and 1 the other
13661 * extremity (left + width or top + height). Note that it would be more optimized to directly
13662 * store pre-computed pixels, but the scale dimensions are not guaranteed at the time we need
13663 * to create the lookup table. The table ALWAYS contains at least two items: min and max.
13664 *
13665 * @param {Number[]} timestamps - timestamps sorted from lowest to highest.
13666 * @param {String} distribution - If 'linear', timestamps will be spread linearly along the min
13667 * and max range, so basically, the table will contains only two items: {min, 0} and {max, 1}.
13668 * If 'series', timestamps will be positioned at the same distance from each other. In this
13669 * case, only timestamps that break the time linearity are registered, meaning that in the
13670 * best case, all timestamps are linear, the table contains only min and max.
13671 */
13672function buildLookupTable(timestamps, min, max, distribution) {
13673	if (distribution === 'linear' || !timestamps.length) {
13674		return [
13675			{time: min, pos: 0},
13676			{time: max, pos: 1}
13677		];
13678	}
13679
13680	var table = [];
13681	var items = [min];
13682	var i, ilen, prev, curr, next;
13683
13684	for (i = 0, ilen = timestamps.length; i < ilen; ++i) {
13685		curr = timestamps[i];
13686		if (curr > min && curr < max) {
13687			items.push(curr);
13688		}
13689	}
13690
13691	items.push(max);
13692
13693	for (i = 0, ilen = items.length; i < ilen; ++i) {
13694		next = items[i + 1];
13695		prev = items[i - 1];
13696		curr = items[i];
13697
13698		// only add points that breaks the scale linearity
13699		if (prev === undefined || next === undefined || Math.round((next + prev) / 2) !== curr) {
13700			table.push({time: curr, pos: i / (ilen - 1)});
13701		}
13702	}
13703
13704	return table;
13705}
13706
13707// @see adapted from http://www.anujgakhar.com/2014/03/01/binary-search-in-javascript/
13708function lookup(table, key, value) {
13709	var lo = 0;
13710	var hi = table.length - 1;
13711	var mid, i0, i1;
13712
13713	while (lo >= 0 && lo <= hi) {
13714		mid = (lo + hi) >> 1;
13715		i0 = table[mid - 1] || null;
13716		i1 = table[mid];
13717
13718		if (!i0) {
13719			// given value is outside table (before first item)
13720			return {lo: null, hi: i1};
13721		} else if (i1[key] < value) {
13722			lo = mid + 1;
13723		} else if (i0[key] > value) {
13724			hi = mid - 1;
13725		} else {
13726			return {lo: i0, hi: i1};
13727		}
13728	}
13729
13730	// given value is outside table (after last item)
13731	return {lo: i1, hi: null};
13732}
13733
13734/**
13735 * Linearly interpolates the given source `value` using the table items `skey` values and
13736 * returns the associated `tkey` value. For example, interpolate(table, 'time', 42, 'pos')
13737 * returns the position for a timestamp equal to 42. If value is out of bounds, values at
13738 * index [0, 1] or [n - 1, n] are used for the interpolation.
13739 */
13740function interpolate(table, skey, sval, tkey) {
13741	var range = lookup(table, skey, sval);
13742
13743	// Note: the lookup table ALWAYS contains at least 2 items (min and max)
13744	var prev = !range.lo ? table[0] : !range.hi ? table[table.length - 2] : range.lo;
13745	var next = !range.lo ? table[1] : !range.hi ? table[table.length - 1] : range.hi;
13746
13747	var span = next[skey] - prev[skey];
13748	var ratio = span ? (sval - prev[skey]) / span : 0;
13749	var offset = (next[tkey] - prev[tkey]) * ratio;
13750
13751	return prev[tkey] + offset;
13752}
13753
13754/**
13755 * Convert the given value to a moment object using the given time options.
13756 * @see http://momentjs.com/docs/#/parsing/
13757 */
13758function momentify(value, options) {
13759	var parser = options.parser;
13760	var format = options.parser || options.format;
13761
13762	if (typeof parser === 'function') {
13763		return parser(value);
13764	}
13765
13766	if (typeof value === 'string' && typeof format === 'string') {
13767		return moment(value, format);
13768	}
13769
13770	if (!(value instanceof moment)) {
13771		value = moment(value);
13772	}
13773
13774	if (value.isValid()) {
13775		return value;
13776	}
13777
13778	// Labels are in an incompatible moment format and no `parser` has been provided.
13779	// The user might still use the deprecated `format` option to convert his inputs.
13780	if (typeof format === 'function') {
13781		return format(value);
13782	}
13783
13784	return value;
13785}
13786
13787function parse(input, scale) {
13788	if (helpers.isNullOrUndef(input)) {
13789		return null;
13790	}
13791
13792	var options = scale.options.time;
13793	var value = momentify(scale.getRightValue(input), options);
13794	if (!value.isValid()) {
13795		return null;
13796	}
13797
13798	if (options.round) {
13799		value.startOf(options.round);
13800	}
13801
13802	return value.valueOf();
13803}
13804
13805/**
13806 * Returns the number of unit to skip to be able to display up to `capacity` number of ticks
13807 * in `unit` for the given `min` / `max` range and respecting the interval steps constraints.
13808 */
13809function determineStepSize(min, max, unit, capacity) {
13810	var range = max - min;
13811	var interval = INTERVALS[unit];
13812	var milliseconds = interval.size;
13813	var steps = interval.steps;
13814	var i, ilen, factor;
13815
13816	if (!steps) {
13817		return Math.ceil(range / (capacity * milliseconds));
13818	}
13819
13820	for (i = 0, ilen = steps.length; i < ilen; ++i) {
13821		factor = steps[i];
13822		if (Math.ceil(range / (milliseconds * factor)) <= capacity) {
13823			break;
13824		}
13825	}
13826
13827	return factor;
13828}
13829
13830/**
13831 * Figures out what unit results in an appropriate number of auto-generated ticks
13832 */
13833function determineUnitForAutoTicks(minUnit, min, max, capacity) {
13834	var ilen = UNITS.length;
13835	var i, interval, factor;
13836
13837	for (i = UNITS.indexOf(minUnit); i < ilen - 1; ++i) {
13838		interval = INTERVALS[UNITS[i]];
13839		factor = interval.steps ? interval.steps[interval.steps.length - 1] : MAX_INTEGER;
13840
13841		if (interval.common && Math.ceil((max - min) / (factor * interval.size)) <= capacity) {
13842			return UNITS[i];
13843		}
13844	}
13845
13846	return UNITS[ilen - 1];
13847}
13848
13849/**
13850 * Figures out what unit to format a set of ticks with
13851 */
13852function determineUnitForFormatting(ticks, minUnit, min, max) {
13853	var duration = moment.duration(moment(max).diff(moment(min)));
13854	var ilen = UNITS.length;
13855	var i, unit;
13856
13857	for (i = ilen - 1; i >= UNITS.indexOf(minUnit); i--) {
13858		unit = UNITS[i];
13859		if (INTERVALS[unit].common && duration.as(unit) >= ticks.length) {
13860			return unit;
13861		}
13862	}
13863
13864	return UNITS[minUnit ? UNITS.indexOf(minUnit) : 0];
13865}
13866
13867function determineMajorUnit(unit) {
13868	for (var i = UNITS.indexOf(unit) + 1, ilen = UNITS.length; i < ilen; ++i) {
13869		if (INTERVALS[UNITS[i]].common) {
13870			return UNITS[i];
13871		}
13872	}
13873}
13874
13875/**
13876 * Generates a maximum of `capacity` timestamps between min and max, rounded to the
13877 * `minor` unit, aligned on the `major` unit and using the given scale time `options`.
13878 * Important: this method can return ticks outside the min and max range, it's the
13879 * responsibility of the calling code to clamp values if needed.
13880 */
13881function generate(min, max, capacity, options) {
13882	var timeOpts = options.time;
13883	var minor = timeOpts.unit || determineUnitForAutoTicks(timeOpts.minUnit, min, max, capacity);
13884	var major = determineMajorUnit(minor);
13885	var stepSize = helpers.valueOrDefault(timeOpts.stepSize, timeOpts.unitStepSize);
13886	var weekday = minor === 'week' ? timeOpts.isoWeekday : false;
13887	var majorTicksEnabled = options.ticks.major.enabled;
13888	var interval = INTERVALS[minor];
13889	var first = moment(min);
13890	var last = moment(max);
13891	var ticks = [];
13892	var time;
13893
13894	if (!stepSize) {
13895		stepSize = determineStepSize(min, max, minor, capacity);
13896	}
13897
13898	// For 'week' unit, handle the first day of week option
13899	if (weekday) {
13900		first = first.isoWeekday(weekday);
13901		last = last.isoWeekday(weekday);
13902	}
13903
13904	// Align first/last ticks on unit
13905	first = first.startOf(weekday ? 'day' : minor);
13906	last = last.startOf(weekday ? 'day' : minor);
13907
13908	// Make sure that the last tick include max
13909	if (last < max) {
13910		last.add(1, minor);
13911	}
13912
13913	time = moment(first);
13914
13915	if (majorTicksEnabled && major && !weekday && !timeOpts.round) {
13916		// Align the first tick on the previous `minor` unit aligned on the `major` unit:
13917		// we first aligned time on the previous `major` unit then add the number of full
13918		// stepSize there is between first and the previous major time.
13919		time.startOf(major);
13920		time.add(~~((first - time) / (interval.size * stepSize)) * stepSize, minor);
13921	}
13922
13923	for (; time < last; time.add(stepSize, minor)) {
13924		ticks.push(+time);
13925	}
13926
13927	ticks.push(+time);
13928
13929	return ticks;
13930}
13931
13932/**
13933 * Returns the right and left offsets from edges in the form of {left, right}.
13934 * Offsets are added when the `offset` option is true.
13935 */
13936function computeOffsets(table, ticks, min, max, options) {
13937	var left = 0;
13938	var right = 0;
13939	var upper, lower;
13940
13941	if (options.offset && ticks.length) {
13942		if (!options.time.min) {
13943			upper = ticks.length > 1 ? ticks[1] : max;
13944			lower = ticks[0];
13945			left = (
13946				interpolate(table, 'time', upper, 'pos') -
13947				interpolate(table, 'time', lower, 'pos')
13948			) / 2;
13949		}
13950		if (!options.time.max) {
13951			upper = ticks[ticks.length - 1];
13952			lower = ticks.length > 1 ? ticks[ticks.length - 2] : min;
13953			right = (
13954				interpolate(table, 'time', upper, 'pos') -
13955				interpolate(table, 'time', lower, 'pos')
13956			) / 2;
13957		}
13958	}
13959
13960	return {left: left, right: right};
13961}
13962
13963function ticksFromTimestamps(values, majorUnit) {
13964	var ticks = [];
13965	var i, ilen, value, major;
13966
13967	for (i = 0, ilen = values.length; i < ilen; ++i) {
13968		value = values[i];
13969		major = majorUnit ? value === +moment(value).startOf(majorUnit) : false;
13970
13971		ticks.push({
13972			value: value,
13973			major: major
13974		});
13975	}
13976
13977	return ticks;
13978}
13979
13980module.exports = function(Chart) {
13981
13982	var defaultConfig = {
13983		position: 'bottom',
13984
13985		/**
13986		 * Data distribution along the scale:
13987		 * - 'linear': data are spread according to their time (distances can vary),
13988		 * - 'series': data are spread at the same distance from each other.
13989		 * @see https://github.com/chartjs/Chart.js/pull/4507
13990		 * @since 2.7.0
13991		 */
13992		distribution: 'linear',
13993
13994		/**
13995		 * Scale boundary strategy (bypassed by min/max time options)
13996		 * - `data`: make sure data are fully visible, ticks outside are removed
13997		 * - `ticks`: make sure ticks are fully visible, data outside are truncated
13998		 * @see https://github.com/chartjs/Chart.js/pull/4556
13999		 * @since 2.7.0
14000		 */
14001		bounds: 'data',
14002
14003		time: {
14004			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
14005			format: false, // DEPRECATED false == date objects, moment object, callback or a pattern string from http://momentjs.com/docs/#/parsing/string-format/
14006			unit: false, // false == automatic or override with week, month, year, etc.
14007			round: false, // none, or override with week, month, year, etc.
14008			displayFormat: false, // DEPRECATED
14009			isoWeekday: false, // override week start day - see http://momentjs.com/docs/#/get-set/iso-weekday/
14010			minUnit: 'millisecond',
14011
14012			// defaults to unit's corresponding unitFormat below or override using pattern string from http://momentjs.com/docs/#/displaying/format/
14013			displayFormats: {
14014				millisecond: 'h:mm:ss.SSS a', // 11:20:01.123 AM,
14015				second: 'h:mm:ss a', // 11:20:01 AM
14016				minute: 'h:mm a', // 11:20 AM
14017				hour: 'hA', // 5PM
14018				day: 'MMM D', // Sep 4
14019				week: 'll', // Week 46, or maybe "[W]WW - YYYY" ?
14020				month: 'MMM YYYY', // Sept 2015
14021				quarter: '[Q]Q - YYYY', // Q3
14022				year: 'YYYY' // 2015
14023			},
14024		},
14025		ticks: {
14026			autoSkip: false,
14027
14028			/**
14029			 * Ticks generation input values:
14030			 * - 'auto': generates "optimal" ticks based on scale size and time options.
14031			 * - 'data': generates ticks from data (including labels from data {t|x|y} objects).
14032			 * - 'labels': generates ticks from user given `data.labels` values ONLY.
14033			 * @see https://github.com/chartjs/Chart.js/pull/4507
14034			 * @since 2.7.0
14035			 */
14036			source: 'auto',
14037
14038			major: {
14039				enabled: false
14040			}
14041		}
14042	};
14043
14044	var TimeScale = Chart.Scale.extend({
14045		initialize: function() {
14046			if (!moment) {
14047				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');
14048			}
14049
14050			this.mergeTicksOptions();
14051
14052			Chart.Scale.prototype.initialize.call(this);
14053		},
14054
14055		update: function() {
14056			var me = this;
14057			var options = me.options;
14058
14059			// DEPRECATIONS: output a message only one time per update
14060			if (options.time && options.time.format) {
14061				console.warn('options.time.format is deprecated and replaced by options.time.parser.');
14062			}
14063
14064			return Chart.Scale.prototype.update.apply(me, arguments);
14065		},
14066
14067		/**
14068		 * Allows data to be referenced via 't' attribute
14069		 */
14070		getRightValue: function(rawValue) {
14071			if (rawValue && rawValue.t !== undefined) {
14072				rawValue = rawValue.t;
14073			}
14074			return Chart.Scale.prototype.getRightValue.call(this, rawValue);
14075		},
14076
14077		determineDataLimits: function() {
14078			var me = this;
14079			var chart = me.chart;
14080			var timeOpts = me.options.time;
14081			var unit = timeOpts.unit || 'day';
14082			var min = MAX_INTEGER;
14083			var max = MIN_INTEGER;
14084			var timestamps = [];
14085			var datasets = [];
14086			var labels = [];
14087			var i, j, ilen, jlen, data, timestamp;
14088
14089			// Convert labels to timestamps
14090			for (i = 0, ilen = chart.data.labels.length; i < ilen; ++i) {
14091				labels.push(parse(chart.data.labels[i], me));
14092			}
14093
14094			// Convert data to timestamps
14095			for (i = 0, ilen = (chart.data.datasets || []).length; i < ilen; ++i) {
14096				if (chart.isDatasetVisible(i)) {
14097					data = chart.data.datasets[i].data;
14098
14099					// Let's consider that all data have the same format.
14100					if (helpers.isObject(data[0])) {
14101						datasets[i] = [];
14102
14103						for (j = 0, jlen = data.length; j < jlen; ++j) {
14104							timestamp = parse(data[j], me);
14105							timestamps.push(timestamp);
14106							datasets[i][j] = timestamp;
14107						}
14108					} else {
14109						timestamps.push.apply(timestamps, labels);
14110						datasets[i] = labels.slice(0);
14111					}
14112				} else {
14113					datasets[i] = [];
14114				}
14115			}
14116
14117			if (labels.length) {
14118				// Sort labels **after** data have been converted
14119				labels = arrayUnique(labels).sort(sorter);
14120				min = Math.min(min, labels[0]);
14121				max = Math.max(max, labels[labels.length - 1]);
14122			}
14123
14124			if (timestamps.length) {
14125				timestamps = arrayUnique(timestamps).sort(sorter);
14126				min = Math.min(min, timestamps[0]);
14127				max = Math.max(max, timestamps[timestamps.length - 1]);
14128			}
14129
14130			min = parse(timeOpts.min, me) || min;
14131			max = parse(timeOpts.max, me) || max;
14132
14133			// In case there is no valid min/max, set limits based on unit time option
14134			min = min === MAX_INTEGER ? +moment().startOf(unit) : min;
14135			max = max === MIN_INTEGER ? +moment().endOf(unit) + 1 : max;
14136
14137			// Make sure that max is strictly higher than min (required by the lookup table)
14138			me.min = Math.min(min, max);
14139			me.max = Math.max(min + 1, max);
14140
14141			// PRIVATE
14142			me._horizontal = me.isHorizontal();
14143			me._table = [];
14144			me._timestamps = {
14145				data: timestamps,
14146				datasets: datasets,
14147				labels: labels
14148			};
14149		},
14150
14151		buildTicks: function() {
14152			var me = this;
14153			var min = me.min;
14154			var max = me.max;
14155			var options = me.options;
14156			var timeOpts = options.time;
14157			var timestamps = [];
14158			var ticks = [];
14159			var i, ilen, timestamp;
14160
14161			switch (options.ticks.source) {
14162			case 'data':
14163				timestamps = me._timestamps.data;
14164				break;
14165			case 'labels':
14166				timestamps = me._timestamps.labels;
14167				break;
14168			case 'auto':
14169			default:
14170				timestamps = generate(min, max, me.getLabelCapacity(min), options);
14171			}
14172
14173			if (options.bounds === 'ticks' && timestamps.length) {
14174				min = timestamps[0];
14175				max = timestamps[timestamps.length - 1];
14176			}
14177
14178			// Enforce limits with user min/max options
14179			min = parse(timeOpts.min, me) || min;
14180			max = parse(timeOpts.max, me) || max;
14181
14182			// Remove ticks outside the min/max range
14183			for (i = 0, ilen = timestamps.length; i < ilen; ++i) {
14184				timestamp = timestamps[i];
14185				if (timestamp >= min && timestamp <= max) {
14186					ticks.push(timestamp);
14187				}
14188			}
14189
14190			me.min = min;
14191			me.max = max;
14192
14193			// PRIVATE
14194			me._unit = timeOpts.unit || determineUnitForFormatting(ticks, timeOpts.minUnit, me.min, me.max);
14195			me._majorUnit = determineMajorUnit(me._unit);
14196			me._table = buildLookupTable(me._timestamps.data, min, max, options.distribution);
14197			me._offsets = computeOffsets(me._table, ticks, min, max, options);
14198
14199			return ticksFromTimestamps(ticks, me._majorUnit);
14200		},
14201
14202		getLabelForIndex: function(index, datasetIndex) {
14203			var me = this;
14204			var data = me.chart.data;
14205			var timeOpts = me.options.time;
14206			var label = data.labels && index < data.labels.length ? data.labels[index] : '';
14207			var value = data.datasets[datasetIndex].data[index];
14208
14209			if (helpers.isObject(value)) {
14210				label = me.getRightValue(value);
14211			}
14212			if (timeOpts.tooltipFormat) {
14213				label = momentify(label, timeOpts).format(timeOpts.tooltipFormat);
14214			}
14215
14216			return label;
14217		},
14218
14219		/**
14220		 * Function to format an individual tick mark
14221		 * @private
14222		 */
14223		tickFormatFunction: function(tick, index, ticks, formatOverride) {
14224			var me = this;
14225			var options = me.options;
14226			var time = tick.valueOf();
14227			var formats = options.time.displayFormats;
14228			var minorFormat = formats[me._unit];
14229			var majorUnit = me._majorUnit;
14230			var majorFormat = formats[majorUnit];
14231			var majorTime = tick.clone().startOf(majorUnit).valueOf();
14232			var majorTickOpts = options.ticks.major;
14233			var major = majorTickOpts.enabled && majorUnit && majorFormat && time === majorTime;
14234			var label = tick.format(formatOverride ? formatOverride : major ? majorFormat : minorFormat);
14235			var tickOpts = major ? majorTickOpts : options.ticks.minor;
14236			var formatter = helpers.valueOrDefault(tickOpts.callback, tickOpts.userCallback);
14237
14238			return formatter ? formatter(label, index, ticks) : label;
14239		},
14240
14241		convertTicksToLabels: function(ticks) {
14242			var labels = [];
14243			var i, ilen;
14244
14245			for (i = 0, ilen = ticks.length; i < ilen; ++i) {
14246				labels.push(this.tickFormatFunction(moment(ticks[i].value), i, ticks));
14247			}
14248
14249			return labels;
14250		},
14251
14252		/**
14253		 * @private
14254		 */
14255		getPixelForOffset: function(time) {
14256			var me = this;
14257			var size = me._horizontal ? me.width : me.height;
14258			var start = me._horizontal ? me.left : me.top;
14259			var pos = interpolate(me._table, 'time', time, 'pos');
14260
14261			return start + size * (me._offsets.left + pos) / (me._offsets.left + 1 + me._offsets.right);
14262		},
14263
14264		getPixelForValue: function(value, index, datasetIndex) {
14265			var me = this;
14266			var time = null;
14267
14268			if (index !== undefined && datasetIndex !== undefined) {
14269				time = me._timestamps.datasets[datasetIndex][index];
14270			}
14271
14272			if (time === null) {
14273				time = parse(value, me);
14274			}
14275
14276			if (time !== null) {
14277				return me.getPixelForOffset(time);
14278			}
14279		},
14280
14281		getPixelForTick: function(index) {
14282			var ticks = this.getTicks();
14283			return index >= 0 && index < ticks.length ?
14284				this.getPixelForOffset(ticks[index].value) :
14285				null;
14286		},
14287
14288		getValueForPixel: function(pixel) {
14289			var me = this;
14290			var size = me._horizontal ? me.width : me.height;
14291			var start = me._horizontal ? me.left : me.top;
14292			var pos = (size ? (pixel - start) / size : 0) * (me._offsets.left + 1 + me._offsets.left) - me._offsets.right;
14293			var time = interpolate(me._table, 'pos', pos, 'time');
14294
14295			return moment(time);
14296		},
14297
14298		/**
14299		 * Crude approximation of what the label width might be
14300		 * @private
14301		 */
14302		getLabelWidth: function(label) {
14303			var me = this;
14304			var ticksOpts = me.options.ticks;
14305			var tickLabelWidth = me.ctx.measureText(label).width;
14306			var angle = helpers.toRadians(ticksOpts.maxRotation);
14307			var cosRotation = Math.cos(angle);
14308			var sinRotation = Math.sin(angle);
14309			var tickFontSize = helpers.valueOrDefault(ticksOpts.fontSize, defaults.global.defaultFontSize);
14310
14311			return (tickLabelWidth * cosRotation) + (tickFontSize * sinRotation);
14312		},
14313
14314		/**
14315		 * @private
14316		 */
14317		getLabelCapacity: function(exampleTime) {
14318			var me = this;
14319
14320			var formatOverride = me.options.time.displayFormats.millisecond;	// Pick the longest format for guestimation
14321
14322			var exampleLabel = me.tickFormatFunction(moment(exampleTime), 0, [], formatOverride);
14323			var tickLabelWidth = me.getLabelWidth(exampleLabel);
14324			var innerWidth = me.isHorizontal() ? me.width : me.height;
14325
14326			var capacity = Math.floor(innerWidth / tickLabelWidth);
14327			return capacity > 0 ? capacity : 1;
14328		}
14329	});
14330
14331	Chart.scaleService.registerScaleType('time', TimeScale, defaultConfig);
14332};
14333
14334},{"1":1,"25":25,"45":45}]},{},[7])(7)
14335});