app/assets/javascripts/blazer/Chart.js
/*!
* Chart.js
* http://chartjs.org/
* Version: 2.5.0
*
* Copyright 2017 Nick Downie
* Released under the MIT license
* https://github.com/chartjs/Chart.js/blob/master/LICENSE.md
*/
(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){
},{}],2:[function(require,module,exports){
/* MIT license */
var colorNames = require(6);
module.exports = {
getRgba: getRgba,
getHsla: getHsla,
getRgb: getRgb,
getHsl: getHsl,
getHwb: getHwb,
getAlpha: getAlpha,
hexString: hexString,
rgbString: rgbString,
rgbaString: rgbaString,
percentString: percentString,
percentaString: percentaString,
hslString: hslString,
hslaString: hslaString,
hwbString: hwbString,
keyword: keyword
}
function getRgba(string) {
if (!string) {
return;
}
var abbr = /^#([a-fA-F0-9]{3})$/,
hex = /^#([a-fA-F0-9]{6})$/,
rgba = /^rgba?\(\s*([+-]?\d+)\s*,\s*([+-]?\d+)\s*,\s*([+-]?\d+)\s*(?:,\s*([+-]?[\d\.]+)\s*)?\)$/,
per = /^rgba?\(\s*([+-]?[\d\.]+)\%\s*,\s*([+-]?[\d\.]+)\%\s*,\s*([+-]?[\d\.]+)\%\s*(?:,\s*([+-]?[\d\.]+)\s*)?\)$/,
keyword = /(\w+)/;
var rgb = [0, 0, 0],
a = 1,
match = string.match(abbr);
if (match) {
match = match[1];
for (var i = 0; i < rgb.length; i++) {
rgb[i] = parseInt(match[i] + match[i], 16);
}
}
else if (match = string.match(hex)) {
match = match[1];
for (var i = 0; i < rgb.length; i++) {
rgb[i] = parseInt(match.slice(i * 2, i * 2 + 2), 16);
}
}
else if (match = string.match(rgba)) {
for (var i = 0; i < rgb.length; i++) {
rgb[i] = parseInt(match[i + 1]);
}
a = parseFloat(match[4]);
}
else if (match = string.match(per)) {
for (var i = 0; i < rgb.length; i++) {
rgb[i] = Math.round(parseFloat(match[i + 1]) * 2.55);
}
a = parseFloat(match[4]);
}
else if (match = string.match(keyword)) {
if (match[1] == "transparent") {
return [0, 0, 0, 0];
}
rgb = colorNames[match[1]];
if (!rgb) {
return;
}
}
for (var i = 0; i < rgb.length; i++) {
rgb[i] = scale(rgb[i], 0, 255);
}
if (!a && a != 0) {
a = 1;
}
else {
a = scale(a, 0, 1);
}
rgb[3] = a;
return rgb;
}
function getHsla(string) {
if (!string) {
return;
}
var hsl = /^hsla?\(\s*([+-]?\d+)(?:deg)?\s*,\s*([+-]?[\d\.]+)%\s*,\s*([+-]?[\d\.]+)%\s*(?:,\s*([+-]?[\d\.]+)\s*)?\)/;
var match = string.match(hsl);
if (match) {
var alpha = parseFloat(match[4]);
var h = scale(parseInt(match[1]), 0, 360),
s = scale(parseFloat(match[2]), 0, 100),
l = scale(parseFloat(match[3]), 0, 100),
a = scale(isNaN(alpha) ? 1 : alpha, 0, 1);
return [h, s, l, a];
}
}
function getHwb(string) {
if (!string) {
return;
}
var hwb = /^hwb\(\s*([+-]?\d+)(?:deg)?\s*,\s*([+-]?[\d\.]+)%\s*,\s*([+-]?[\d\.]+)%\s*(?:,\s*([+-]?[\d\.]+)\s*)?\)/;
var match = string.match(hwb);
if (match) {
var alpha = parseFloat(match[4]);
var h = scale(parseInt(match[1]), 0, 360),
w = scale(parseFloat(match[2]), 0, 100),
b = scale(parseFloat(match[3]), 0, 100),
a = scale(isNaN(alpha) ? 1 : alpha, 0, 1);
return [h, w, b, a];
}
}
function getRgb(string) {
var rgba = getRgba(string);
return rgba && rgba.slice(0, 3);
}
function getHsl(string) {
var hsla = getHsla(string);
return hsla && hsla.slice(0, 3);
}
function getAlpha(string) {
var vals = getRgba(string);
if (vals) {
return vals[3];
}
else if (vals = getHsla(string)) {
return vals[3];
}
else if (vals = getHwb(string)) {
return vals[3];
}
}
// generators
function hexString(rgb) {
return "#" + hexDouble(rgb[0]) + hexDouble(rgb[1])
+ hexDouble(rgb[2]);
}
function rgbString(rgba, alpha) {
if (alpha < 1 || (rgba[3] && rgba[3] < 1)) {
return rgbaString(rgba, alpha);
}
return "rgb(" + rgba[0] + ", " + rgba[1] + ", " + rgba[2] + ")";
}
function rgbaString(rgba, alpha) {
if (alpha === undefined) {
alpha = (rgba[3] !== undefined ? rgba[3] : 1);
}
return "rgba(" + rgba[0] + ", " + rgba[1] + ", " + rgba[2]
+ ", " + alpha + ")";
}
function percentString(rgba, alpha) {
if (alpha < 1 || (rgba[3] && rgba[3] < 1)) {
return percentaString(rgba, alpha);
}
var r = Math.round(rgba[0]/255 * 100),
g = Math.round(rgba[1]/255 * 100),
b = Math.round(rgba[2]/255 * 100);
return "rgb(" + r + "%, " + g + "%, " + b + "%)";
}
function percentaString(rgba, alpha) {
var r = Math.round(rgba[0]/255 * 100),
g = Math.round(rgba[1]/255 * 100),
b = Math.round(rgba[2]/255 * 100);
return "rgba(" + r + "%, " + g + "%, " + b + "%, " + (alpha || rgba[3] || 1) + ")";
}
function hslString(hsla, alpha) {
if (alpha < 1 || (hsla[3] && hsla[3] < 1)) {
return hslaString(hsla, alpha);
}
return "hsl(" + hsla[0] + ", " + hsla[1] + "%, " + hsla[2] + "%)";
}
function hslaString(hsla, alpha) {
if (alpha === undefined) {
alpha = (hsla[3] !== undefined ? hsla[3] : 1);
}
return "hsla(" + hsla[0] + ", " + hsla[1] + "%, " + hsla[2] + "%, "
+ alpha + ")";
}
// hwb is a bit different than rgb(a) & hsl(a) since there is no alpha specific syntax
// (hwb have alpha optional & 1 is default value)
function hwbString(hwb, alpha) {
if (alpha === undefined) {
alpha = (hwb[3] !== undefined ? hwb[3] : 1);
}
return "hwb(" + hwb[0] + ", " + hwb[1] + "%, " + hwb[2] + "%"
+ (alpha !== undefined && alpha !== 1 ? ", " + alpha : "") + ")";
}
function keyword(rgb) {
return reverseNames[rgb.slice(0, 3)];
}
// helpers
function scale(num, min, max) {
return Math.min(Math.max(min, num), max);
}
function hexDouble(num) {
var str = num.toString(16).toUpperCase();
return (str.length < 2) ? "0" + str : str;
}
//create a list of reverse color names
var reverseNames = {};
for (var name in colorNames) {
reverseNames[colorNames[name]] = name;
}
},{"6":6}],3:[function(require,module,exports){
/* MIT license */
var convert = require(5);
var string = require(2);
var Color = function (obj) {
if (obj instanceof Color) {
return obj;
}
if (!(this instanceof Color)) {
return new Color(obj);
}
this.values = {
rgb: [0, 0, 0],
hsl: [0, 0, 0],
hsv: [0, 0, 0],
hwb: [0, 0, 0],
cmyk: [0, 0, 0, 0],
alpha: 1
};
// parse Color() argument
var vals;
if (typeof obj === 'string') {
vals = string.getRgba(obj);
if (vals) {
this.setValues('rgb', vals);
} else if (vals = string.getHsla(obj)) {
this.setValues('hsl', vals);
} else if (vals = string.getHwb(obj)) {
this.setValues('hwb', vals);
} else {
throw new Error('Unable to parse color from string "' + obj + '"');
}
} else if (typeof obj === 'object') {
vals = obj;
if (vals.r !== undefined || vals.red !== undefined) {
this.setValues('rgb', vals);
} else if (vals.l !== undefined || vals.lightness !== undefined) {
this.setValues('hsl', vals);
} else if (vals.v !== undefined || vals.value !== undefined) {
this.setValues('hsv', vals);
} else if (vals.w !== undefined || vals.whiteness !== undefined) {
this.setValues('hwb', vals);
} else if (vals.c !== undefined || vals.cyan !== undefined) {
this.setValues('cmyk', vals);
} else {
throw new Error('Unable to parse color from object ' + JSON.stringify(obj));
}
}
};
Color.prototype = {
rgb: function () {
return this.setSpace('rgb', arguments);
},
hsl: function () {
return this.setSpace('hsl', arguments);
},
hsv: function () {
return this.setSpace('hsv', arguments);
},
hwb: function () {
return this.setSpace('hwb', arguments);
},
cmyk: function () {
return this.setSpace('cmyk', arguments);
},
rgbArray: function () {
return this.values.rgb;
},
hslArray: function () {
return this.values.hsl;
},
hsvArray: function () {
return this.values.hsv;
},
hwbArray: function () {
var values = this.values;
if (values.alpha !== 1) {
return values.hwb.concat([values.alpha]);
}
return values.hwb;
},
cmykArray: function () {
return this.values.cmyk;
},
rgbaArray: function () {
var values = this.values;
return values.rgb.concat([values.alpha]);
},
hslaArray: function () {
var values = this.values;
return values.hsl.concat([values.alpha]);
},
alpha: function (val) {
if (val === undefined) {
return this.values.alpha;
}
this.setValues('alpha', val);
return this;
},
red: function (val) {
return this.setChannel('rgb', 0, val);
},
green: function (val) {
return this.setChannel('rgb', 1, val);
},
blue: function (val) {
return this.setChannel('rgb', 2, val);
},
hue: function (val) {
if (val) {
val %= 360;
val = val < 0 ? 360 + val : val;
}
return this.setChannel('hsl', 0, val);
},
saturation: function (val) {
return this.setChannel('hsl', 1, val);
},
lightness: function (val) {
return this.setChannel('hsl', 2, val);
},
saturationv: function (val) {
return this.setChannel('hsv', 1, val);
},
whiteness: function (val) {
return this.setChannel('hwb', 1, val);
},
blackness: function (val) {
return this.setChannel('hwb', 2, val);
},
value: function (val) {
return this.setChannel('hsv', 2, val);
},
cyan: function (val) {
return this.setChannel('cmyk', 0, val);
},
magenta: function (val) {
return this.setChannel('cmyk', 1, val);
},
yellow: function (val) {
return this.setChannel('cmyk', 2, val);
},
black: function (val) {
return this.setChannel('cmyk', 3, val);
},
hexString: function () {
return string.hexString(this.values.rgb);
},
rgbString: function () {
return string.rgbString(this.values.rgb, this.values.alpha);
},
rgbaString: function () {
return string.rgbaString(this.values.rgb, this.values.alpha);
},
percentString: function () {
return string.percentString(this.values.rgb, this.values.alpha);
},
hslString: function () {
return string.hslString(this.values.hsl, this.values.alpha);
},
hslaString: function () {
return string.hslaString(this.values.hsl, this.values.alpha);
},
hwbString: function () {
return string.hwbString(this.values.hwb, this.values.alpha);
},
keyword: function () {
return string.keyword(this.values.rgb, this.values.alpha);
},
rgbNumber: function () {
var rgb = this.values.rgb;
return (rgb[0] << 16) | (rgb[1] << 8) | rgb[2];
},
luminosity: function () {
// http://www.w3.org/TR/WCAG20/#relativeluminancedef
var rgb = this.values.rgb;
var lum = [];
for (var i = 0; i < rgb.length; i++) {
var chan = rgb[i] / 255;
lum[i] = (chan <= 0.03928) ? chan / 12.92 : Math.pow(((chan + 0.055) / 1.055), 2.4);
}
return 0.2126 * lum[0] + 0.7152 * lum[1] + 0.0722 * lum[2];
},
contrast: function (color2) {
// http://www.w3.org/TR/WCAG20/#contrast-ratiodef
var lum1 = this.luminosity();
var lum2 = color2.luminosity();
if (lum1 > lum2) {
return (lum1 + 0.05) / (lum2 + 0.05);
}
return (lum2 + 0.05) / (lum1 + 0.05);
},
level: function (color2) {
var contrastRatio = this.contrast(color2);
if (contrastRatio >= 7.1) {
return 'AAA';
}
return (contrastRatio >= 4.5) ? 'AA' : '';
},
dark: function () {
// YIQ equation from http://24ways.org/2010/calculating-color-contrast
var rgb = this.values.rgb;
var yiq = (rgb[0] * 299 + rgb[1] * 587 + rgb[2] * 114) / 1000;
return yiq < 128;
},
light: function () {
return !this.dark();
},
negate: function () {
var rgb = [];
for (var i = 0; i < 3; i++) {
rgb[i] = 255 - this.values.rgb[i];
}
this.setValues('rgb', rgb);
return this;
},
lighten: function (ratio) {
var hsl = this.values.hsl;
hsl[2] += hsl[2] * ratio;
this.setValues('hsl', hsl);
return this;
},
darken: function (ratio) {
var hsl = this.values.hsl;
hsl[2] -= hsl[2] * ratio;
this.setValues('hsl', hsl);
return this;
},
saturate: function (ratio) {
var hsl = this.values.hsl;
hsl[1] += hsl[1] * ratio;
this.setValues('hsl', hsl);
return this;
},
desaturate: function (ratio) {
var hsl = this.values.hsl;
hsl[1] -= hsl[1] * ratio;
this.setValues('hsl', hsl);
return this;
},
whiten: function (ratio) {
var hwb = this.values.hwb;
hwb[1] += hwb[1] * ratio;
this.setValues('hwb', hwb);
return this;
},
blacken: function (ratio) {
var hwb = this.values.hwb;
hwb[2] += hwb[2] * ratio;
this.setValues('hwb', hwb);
return this;
},
greyscale: function () {
var rgb = this.values.rgb;
// http://en.wikipedia.org/wiki/Grayscale#Converting_color_to_grayscale
var val = rgb[0] * 0.3 + rgb[1] * 0.59 + rgb[2] * 0.11;
this.setValues('rgb', [val, val, val]);
return this;
},
clearer: function (ratio) {
var alpha = this.values.alpha;
this.setValues('alpha', alpha - (alpha * ratio));
return this;
},
opaquer: function (ratio) {
var alpha = this.values.alpha;
this.setValues('alpha', alpha + (alpha * ratio));
return this;
},
rotate: function (degrees) {
var hsl = this.values.hsl;
var hue = (hsl[0] + degrees) % 360;
hsl[0] = hue < 0 ? 360 + hue : hue;
this.setValues('hsl', hsl);
return this;
},
/**
* Ported from sass implementation in C
* https://github.com/sass/libsass/blob/0e6b4a2850092356aa3ece07c6b249f0221caced/functions.cpp#L209
*/
mix: function (mixinColor, weight) {
var color1 = this;
var color2 = mixinColor;
var p = weight === undefined ? 0.5 : weight;
var w = 2 * p - 1;
var a = color1.alpha() - color2.alpha();
var w1 = (((w * a === -1) ? w : (w + a) / (1 + w * a)) + 1) / 2.0;
var w2 = 1 - w1;
return this
.rgb(
w1 * color1.red() + w2 * color2.red(),
w1 * color1.green() + w2 * color2.green(),
w1 * color1.blue() + w2 * color2.blue()
)
.alpha(color1.alpha() * p + color2.alpha() * (1 - p));
},
toJSON: function () {
return this.rgb();
},
clone: function () {
// NOTE(SB): using node-clone creates a dependency to Buffer when using browserify,
// making the final build way to big to embed in Chart.js. So let's do it manually,
// assuming that values to clone are 1 dimension arrays containing only numbers,
// except 'alpha' which is a number.
var result = new Color();
var source = this.values;
var target = result.values;
var value, type;
for (var prop in source) {
if (source.hasOwnProperty(prop)) {
value = source[prop];
type = ({}).toString.call(value);
if (type === '[object Array]') {
target[prop] = value.slice(0);
} else if (type === '[object Number]') {
target[prop] = value;
} else {
console.error('unexpected color value:', value);
}
}
}
return result;
}
};
Color.prototype.spaces = {
rgb: ['red', 'green', 'blue'],
hsl: ['hue', 'saturation', 'lightness'],
hsv: ['hue', 'saturation', 'value'],
hwb: ['hue', 'whiteness', 'blackness'],
cmyk: ['cyan', 'magenta', 'yellow', 'black']
};
Color.prototype.maxes = {
rgb: [255, 255, 255],
hsl: [360, 100, 100],
hsv: [360, 100, 100],
hwb: [360, 100, 100],
cmyk: [100, 100, 100, 100]
};
Color.prototype.getValues = function (space) {
var values = this.values;
var vals = {};
for (var i = 0; i < space.length; i++) {
vals[space.charAt(i)] = values[space][i];
}
if (values.alpha !== 1) {
vals.a = values.alpha;
}
// {r: 255, g: 255, b: 255, a: 0.4}
return vals;
};
Color.prototype.setValues = function (space, vals) {
var values = this.values;
var spaces = this.spaces;
var maxes = this.maxes;
var alpha = 1;
var i;
if (space === 'alpha') {
alpha = vals;
} else if (vals.length) {
// [10, 10, 10]
values[space] = vals.slice(0, space.length);
alpha = vals[space.length];
} else if (vals[space.charAt(0)] !== undefined) {
// {r: 10, g: 10, b: 10}
for (i = 0; i < space.length; i++) {
values[space][i] = vals[space.charAt(i)];
}
alpha = vals.a;
} else if (vals[spaces[space][0]] !== undefined) {
// {red: 10, green: 10, blue: 10}
var chans = spaces[space];
for (i = 0; i < space.length; i++) {
values[space][i] = vals[chans[i]];
}
alpha = vals.alpha;
}
values.alpha = Math.max(0, Math.min(1, (alpha === undefined ? values.alpha : alpha)));
if (space === 'alpha') {
return false;
}
var capped;
// cap values of the space prior converting all values
for (i = 0; i < space.length; i++) {
capped = Math.max(0, Math.min(maxes[space][i], values[space][i]));
values[space][i] = Math.round(capped);
}
// convert to all the other color spaces
for (var sname in spaces) {
if (sname !== space) {
values[sname] = convert[space][sname](values[space]);
}
}
return true;
};
Color.prototype.setSpace = function (space, args) {
var vals = args[0];
if (vals === undefined) {
// color.rgb()
return this.getValues(space);
}
// color.rgb(10, 10, 10)
if (typeof vals === 'number') {
vals = Array.prototype.slice.call(args);
}
this.setValues(space, vals);
return this;
};
Color.prototype.setChannel = function (space, index, val) {
var svalues = this.values[space];
if (val === undefined) {
// color.red()
return svalues[index];
} else if (val === svalues[index]) {
// color.red(color.red())
return this;
}
// color.red(100)
svalues[index] = val;
this.setValues(space, svalues);
return this;
};
if (typeof window !== 'undefined') {
window.Color = Color;
}
module.exports = Color;
},{"2":2,"5":5}],4:[function(require,module,exports){
/* MIT license */
module.exports = {
rgb2hsl: rgb2hsl,
rgb2hsv: rgb2hsv,
rgb2hwb: rgb2hwb,
rgb2cmyk: rgb2cmyk,
rgb2keyword: rgb2keyword,
rgb2xyz: rgb2xyz,
rgb2lab: rgb2lab,
rgb2lch: rgb2lch,
hsl2rgb: hsl2rgb,
hsl2hsv: hsl2hsv,
hsl2hwb: hsl2hwb,
hsl2cmyk: hsl2cmyk,
hsl2keyword: hsl2keyword,
hsv2rgb: hsv2rgb,
hsv2hsl: hsv2hsl,
hsv2hwb: hsv2hwb,
hsv2cmyk: hsv2cmyk,
hsv2keyword: hsv2keyword,
hwb2rgb: hwb2rgb,
hwb2hsl: hwb2hsl,
hwb2hsv: hwb2hsv,
hwb2cmyk: hwb2cmyk,
hwb2keyword: hwb2keyword,
cmyk2rgb: cmyk2rgb,
cmyk2hsl: cmyk2hsl,
cmyk2hsv: cmyk2hsv,
cmyk2hwb: cmyk2hwb,
cmyk2keyword: cmyk2keyword,
keyword2rgb: keyword2rgb,
keyword2hsl: keyword2hsl,
keyword2hsv: keyword2hsv,
keyword2hwb: keyword2hwb,
keyword2cmyk: keyword2cmyk,
keyword2lab: keyword2lab,
keyword2xyz: keyword2xyz,
xyz2rgb: xyz2rgb,
xyz2lab: xyz2lab,
xyz2lch: xyz2lch,
lab2xyz: lab2xyz,
lab2rgb: lab2rgb,
lab2lch: lab2lch,
lch2lab: lch2lab,
lch2xyz: lch2xyz,
lch2rgb: lch2rgb
}
function rgb2hsl(rgb) {
var r = rgb[0]/255,
g = rgb[1]/255,
b = rgb[2]/255,
min = Math.min(r, g, b),
max = Math.max(r, g, b),
delta = max - min,
h, s, l;
if (max == min)
h = 0;
else if (r == max)
h = (g - b) / delta;
else if (g == max)
h = 2 + (b - r) / delta;
else if (b == max)
h = 4 + (r - g)/ delta;
h = Math.min(h * 60, 360);
if (h < 0)
h += 360;
l = (min + max) / 2;
if (max == min)
s = 0;
else if (l <= 0.5)
s = delta / (max + min);
else
s = delta / (2 - max - min);
return [h, s * 100, l * 100];
}
function rgb2hsv(rgb) {
var r = rgb[0],
g = rgb[1],
b = rgb[2],
min = Math.min(r, g, b),
max = Math.max(r, g, b),
delta = max - min,
h, s, v;
if (max == 0)
s = 0;
else
s = (delta/max * 1000)/10;
if (max == min)
h = 0;
else if (r == max)
h = (g - b) / delta;
else if (g == max)
h = 2 + (b - r) / delta;
else if (b == max)
h = 4 + (r - g) / delta;
h = Math.min(h * 60, 360);
if (h < 0)
h += 360;
v = ((max / 255) * 1000) / 10;
return [h, s, v];
}
function rgb2hwb(rgb) {
var r = rgb[0],
g = rgb[1],
b = rgb[2],
h = rgb2hsl(rgb)[0],
w = 1/255 * Math.min(r, Math.min(g, b)),
b = 1 - 1/255 * Math.max(r, Math.max(g, b));
return [h, w * 100, b * 100];
}
function rgb2cmyk(rgb) {
var r = rgb[0] / 255,
g = rgb[1] / 255,
b = rgb[2] / 255,
c, m, y, k;
k = Math.min(1 - r, 1 - g, 1 - b);
c = (1 - r - k) / (1 - k) || 0;
m = (1 - g - k) / (1 - k) || 0;
y = (1 - b - k) / (1 - k) || 0;
return [c * 100, m * 100, y * 100, k * 100];
}
function rgb2keyword(rgb) {
return reverseKeywords[JSON.stringify(rgb)];
}
function rgb2xyz(rgb) {
var r = rgb[0] / 255,
g = rgb[1] / 255,
b = rgb[2] / 255;
// assume sRGB
r = r > 0.04045 ? Math.pow(((r + 0.055) / 1.055), 2.4) : (r / 12.92);
g = g > 0.04045 ? Math.pow(((g + 0.055) / 1.055), 2.4) : (g / 12.92);
b = b > 0.04045 ? Math.pow(((b + 0.055) / 1.055), 2.4) : (b / 12.92);
var x = (r * 0.4124) + (g * 0.3576) + (b * 0.1805);
var y = (r * 0.2126) + (g * 0.7152) + (b * 0.0722);
var z = (r * 0.0193) + (g * 0.1192) + (b * 0.9505);
return [x * 100, y *100, z * 100];
}
function rgb2lab(rgb) {
var xyz = rgb2xyz(rgb),
x = xyz[0],
y = xyz[1],
z = xyz[2],
l, a, b;
x /= 95.047;
y /= 100;
z /= 108.883;
x = x > 0.008856 ? Math.pow(x, 1/3) : (7.787 * x) + (16 / 116);
y = y > 0.008856 ? Math.pow(y, 1/3) : (7.787 * y) + (16 / 116);
z = z > 0.008856 ? Math.pow(z, 1/3) : (7.787 * z) + (16 / 116);
l = (116 * y) - 16;
a = 500 * (x - y);
b = 200 * (y - z);
return [l, a, b];
}
function rgb2lch(args) {
return lab2lch(rgb2lab(args));
}
function hsl2rgb(hsl) {
var h = hsl[0] / 360,
s = hsl[1] / 100,
l = hsl[2] / 100,
t1, t2, t3, rgb, val;
if (s == 0) {
val = l * 255;
return [val, val, val];
}
if (l < 0.5)
t2 = l * (1 + s);
else
t2 = l + s - l * s;
t1 = 2 * l - t2;
rgb = [0, 0, 0];
for (var i = 0; i < 3; i++) {
t3 = h + 1 / 3 * - (i - 1);
t3 < 0 && t3++;
t3 > 1 && t3--;
if (6 * t3 < 1)
val = t1 + (t2 - t1) * 6 * t3;
else if (2 * t3 < 1)
val = t2;
else if (3 * t3 < 2)
val = t1 + (t2 - t1) * (2 / 3 - t3) * 6;
else
val = t1;
rgb[i] = val * 255;
}
return rgb;
}
function hsl2hsv(hsl) {
var h = hsl[0],
s = hsl[1] / 100,
l = hsl[2] / 100,
sv, v;
if(l === 0) {
// no need to do calc on black
// also avoids divide by 0 error
return [0, 0, 0];
}
l *= 2;
s *= (l <= 1) ? l : 2 - l;
v = (l + s) / 2;
sv = (2 * s) / (l + s);
return [h, sv * 100, v * 100];
}
function hsl2hwb(args) {
return rgb2hwb(hsl2rgb(args));
}
function hsl2cmyk(args) {
return rgb2cmyk(hsl2rgb(args));
}
function hsl2keyword(args) {
return rgb2keyword(hsl2rgb(args));
}
function hsv2rgb(hsv) {
var h = hsv[0] / 60,
s = hsv[1] / 100,
v = hsv[2] / 100,
hi = Math.floor(h) % 6;
var f = h - Math.floor(h),
p = 255 * v * (1 - s),
q = 255 * v * (1 - (s * f)),
t = 255 * v * (1 - (s * (1 - f))),
v = 255 * v;
switch(hi) {
case 0:
return [v, t, p];
case 1:
return [q, v, p];
case 2:
return [p, v, t];
case 3:
return [p, q, v];
case 4:
return [t, p, v];
case 5:
return [v, p, q];
}
}
function hsv2hsl(hsv) {
var h = hsv[0],
s = hsv[1] / 100,
v = hsv[2] / 100,
sl, l;
l = (2 - s) * v;
sl = s * v;
sl /= (l <= 1) ? l : 2 - l;
sl = sl || 0;
l /= 2;
return [h, sl * 100, l * 100];
}
function hsv2hwb(args) {
return rgb2hwb(hsv2rgb(args))
}
function hsv2cmyk(args) {
return rgb2cmyk(hsv2rgb(args));
}
function hsv2keyword(args) {
return rgb2keyword(hsv2rgb(args));
}
// http://dev.w3.org/csswg/css-color/#hwb-to-rgb
function hwb2rgb(hwb) {
var h = hwb[0] / 360,
wh = hwb[1] / 100,
bl = hwb[2] / 100,
ratio = wh + bl,
i, v, f, n;
// wh + bl cant be > 1
if (ratio > 1) {
wh /= ratio;
bl /= ratio;
}
i = Math.floor(6 * h);
v = 1 - bl;
f = 6 * h - i;
if ((i & 0x01) != 0) {
f = 1 - f;
}
n = wh + f * (v - wh); // linear interpolation
switch (i) {
default:
case 6:
case 0: r = v; g = n; b = wh; break;
case 1: r = n; g = v; b = wh; break;
case 2: r = wh; g = v; b = n; break;
case 3: r = wh; g = n; b = v; break;
case 4: r = n; g = wh; b = v; break;
case 5: r = v; g = wh; b = n; break;
}
return [r * 255, g * 255, b * 255];
}
function hwb2hsl(args) {
return rgb2hsl(hwb2rgb(args));
}
function hwb2hsv(args) {
return rgb2hsv(hwb2rgb(args));
}
function hwb2cmyk(args) {
return rgb2cmyk(hwb2rgb(args));
}
function hwb2keyword(args) {
return rgb2keyword(hwb2rgb(args));
}
function cmyk2rgb(cmyk) {
var c = cmyk[0] / 100,
m = cmyk[1] / 100,
y = cmyk[2] / 100,
k = cmyk[3] / 100,
r, g, b;
r = 1 - Math.min(1, c * (1 - k) + k);
g = 1 - Math.min(1, m * (1 - k) + k);
b = 1 - Math.min(1, y * (1 - k) + k);
return [r * 255, g * 255, b * 255];
}
function cmyk2hsl(args) {
return rgb2hsl(cmyk2rgb(args));
}
function cmyk2hsv(args) {
return rgb2hsv(cmyk2rgb(args));
}
function cmyk2hwb(args) {
return rgb2hwb(cmyk2rgb(args));
}
function cmyk2keyword(args) {
return rgb2keyword(cmyk2rgb(args));
}
function xyz2rgb(xyz) {
var x = xyz[0] / 100,
y = xyz[1] / 100,
z = xyz[2] / 100,
r, g, b;
r = (x * 3.2406) + (y * -1.5372) + (z * -0.4986);
g = (x * -0.9689) + (y * 1.8758) + (z * 0.0415);
b = (x * 0.0557) + (y * -0.2040) + (z * 1.0570);
// assume sRGB
r = r > 0.0031308 ? ((1.055 * Math.pow(r, 1.0 / 2.4)) - 0.055)
: r = (r * 12.92);
g = g > 0.0031308 ? ((1.055 * Math.pow(g, 1.0 / 2.4)) - 0.055)
: g = (g * 12.92);
b = b > 0.0031308 ? ((1.055 * Math.pow(b, 1.0 / 2.4)) - 0.055)
: b = (b * 12.92);
r = Math.min(Math.max(0, r), 1);
g = Math.min(Math.max(0, g), 1);
b = Math.min(Math.max(0, b), 1);
return [r * 255, g * 255, b * 255];
}
function xyz2lab(xyz) {
var x = xyz[0],
y = xyz[1],
z = xyz[2],
l, a, b;
x /= 95.047;
y /= 100;
z /= 108.883;
x = x > 0.008856 ? Math.pow(x, 1/3) : (7.787 * x) + (16 / 116);
y = y > 0.008856 ? Math.pow(y, 1/3) : (7.787 * y) + (16 / 116);
z = z > 0.008856 ? Math.pow(z, 1/3) : (7.787 * z) + (16 / 116);
l = (116 * y) - 16;
a = 500 * (x - y);
b = 200 * (y - z);
return [l, a, b];
}
function xyz2lch(args) {
return lab2lch(xyz2lab(args));
}
function lab2xyz(lab) {
var l = lab[0],
a = lab[1],
b = lab[2],
x, y, z, y2;
if (l <= 8) {
y = (l * 100) / 903.3;
y2 = (7.787 * (y / 100)) + (16 / 116);
} else {
y = 100 * Math.pow((l + 16) / 116, 3);
y2 = Math.pow(y / 100, 1/3);
}
x = x / 95.047 <= 0.008856 ? x = (95.047 * ((a / 500) + y2 - (16 / 116))) / 7.787 : 95.047 * Math.pow((a / 500) + y2, 3);
z = z / 108.883 <= 0.008859 ? z = (108.883 * (y2 - (b / 200) - (16 / 116))) / 7.787 : 108.883 * Math.pow(y2 - (b / 200), 3);
return [x, y, z];
}
function lab2lch(lab) {
var l = lab[0],
a = lab[1],
b = lab[2],
hr, h, c;
hr = Math.atan2(b, a);
h = hr * 360 / 2 / Math.PI;
if (h < 0) {
h += 360;
}
c = Math.sqrt(a * a + b * b);
return [l, c, h];
}
function lab2rgb(args) {
return xyz2rgb(lab2xyz(args));
}
function lch2lab(lch) {
var l = lch[0],
c = lch[1],
h = lch[2],
a, b, hr;
hr = h / 360 * 2 * Math.PI;
a = c * Math.cos(hr);
b = c * Math.sin(hr);
return [l, a, b];
}
function lch2xyz(args) {
return lab2xyz(lch2lab(args));
}
function lch2rgb(args) {
return lab2rgb(lch2lab(args));
}
function keyword2rgb(keyword) {
return cssKeywords[keyword];
}
function keyword2hsl(args) {
return rgb2hsl(keyword2rgb(args));
}
function keyword2hsv(args) {
return rgb2hsv(keyword2rgb(args));
}
function keyword2hwb(args) {
return rgb2hwb(keyword2rgb(args));
}
function keyword2cmyk(args) {
return rgb2cmyk(keyword2rgb(args));
}
function keyword2lab(args) {
return rgb2lab(keyword2rgb(args));
}
function keyword2xyz(args) {
return rgb2xyz(keyword2rgb(args));
}
var cssKeywords = {
aliceblue: [240,248,255],
antiquewhite: [250,235,215],
aqua: [0,255,255],
aquamarine: [127,255,212],
azure: [240,255,255],
beige: [245,245,220],
bisque: [255,228,196],
black: [0,0,0],
blanchedalmond: [255,235,205],
blue: [0,0,255],
blueviolet: [138,43,226],
brown: [165,42,42],
burlywood: [222,184,135],
cadetblue: [95,158,160],
chartreuse: [127,255,0],
chocolate: [210,105,30],
coral: [255,127,80],
cornflowerblue: [100,149,237],
cornsilk: [255,248,220],
crimson: [220,20,60],
cyan: [0,255,255],
darkblue: [0,0,139],
darkcyan: [0,139,139],
darkgoldenrod: [184,134,11],
darkgray: [169,169,169],
darkgreen: [0,100,0],
darkgrey: [169,169,169],
darkkhaki: [189,183,107],
darkmagenta: [139,0,139],
darkolivegreen: [85,107,47],
darkorange: [255,140,0],
darkorchid: [153,50,204],
darkred: [139,0,0],
darksalmon: [233,150,122],
darkseagreen: [143,188,143],
darkslateblue: [72,61,139],
darkslategray: [47,79,79],
darkslategrey: [47,79,79],
darkturquoise: [0,206,209],
darkviolet: [148,0,211],
deeppink: [255,20,147],
deepskyblue: [0,191,255],
dimgray: [105,105,105],
dimgrey: [105,105,105],
dodgerblue: [30,144,255],
firebrick: [178,34,34],
floralwhite: [255,250,240],
forestgreen: [34,139,34],
fuchsia: [255,0,255],
gainsboro: [220,220,220],
ghostwhite: [248,248,255],
gold: [255,215,0],
goldenrod: [218,165,32],
gray: [128,128,128],
green: [0,128,0],
greenyellow: [173,255,47],
grey: [128,128,128],
honeydew: [240,255,240],
hotpink: [255,105,180],
indianred: [205,92,92],
indigo: [75,0,130],
ivory: [255,255,240],
khaki: [240,230,140],
lavender: [230,230,250],
lavenderblush: [255,240,245],
lawngreen: [124,252,0],
lemonchiffon: [255,250,205],
lightblue: [173,216,230],
lightcoral: [240,128,128],
lightcyan: [224,255,255],
lightgoldenrodyellow: [250,250,210],
lightgray: [211,211,211],
lightgreen: [144,238,144],
lightgrey: [211,211,211],
lightpink: [255,182,193],
lightsalmon: [255,160,122],
lightseagreen: [32,178,170],
lightskyblue: [135,206,250],
lightslategray: [119,136,153],
lightslategrey: [119,136,153],
lightsteelblue: [176,196,222],
lightyellow: [255,255,224],
lime: [0,255,0],
limegreen: [50,205,50],
linen: [250,240,230],
magenta: [255,0,255],
maroon: [128,0,0],
mediumaquamarine: [102,205,170],
mediumblue: [0,0,205],
mediumorchid: [186,85,211],
mediumpurple: [147,112,219],
mediumseagreen: [60,179,113],
mediumslateblue: [123,104,238],
mediumspringgreen: [0,250,154],
mediumturquoise: [72,209,204],
mediumvioletred: [199,21,133],
midnightblue: [25,25,112],
mintcream: [245,255,250],
mistyrose: [255,228,225],
moccasin: [255,228,181],
navajowhite: [255,222,173],
navy: [0,0,128],
oldlace: [253,245,230],
olive: [128,128,0],
olivedrab: [107,142,35],
orange: [255,165,0],
orangered: [255,69,0],
orchid: [218,112,214],
palegoldenrod: [238,232,170],
palegreen: [152,251,152],
paleturquoise: [175,238,238],
palevioletred: [219,112,147],
papayawhip: [255,239,213],
peachpuff: [255,218,185],
peru: [205,133,63],
pink: [255,192,203],
plum: [221,160,221],
powderblue: [176,224,230],
purple: [128,0,128],
rebeccapurple: [102, 51, 153],
red: [255,0,0],
rosybrown: [188,143,143],
royalblue: [65,105,225],
saddlebrown: [139,69,19],
salmon: [250,128,114],
sandybrown: [244,164,96],
seagreen: [46,139,87],
seashell: [255,245,238],
sienna: [160,82,45],
silver: [192,192,192],
skyblue: [135,206,235],
slateblue: [106,90,205],
slategray: [112,128,144],
slategrey: [112,128,144],
snow: [255,250,250],
springgreen: [0,255,127],
steelblue: [70,130,180],
tan: [210,180,140],
teal: [0,128,128],
thistle: [216,191,216],
tomato: [255,99,71],
turquoise: [64,224,208],
violet: [238,130,238],
wheat: [245,222,179],
white: [255,255,255],
whitesmoke: [245,245,245],
yellow: [255,255,0],
yellowgreen: [154,205,50]
};
var reverseKeywords = {};
for (var key in cssKeywords) {
reverseKeywords[JSON.stringify(cssKeywords[key])] = key;
}
},{}],5:[function(require,module,exports){
var conversions = require(4);
var convert = function() {
return new Converter();
}
for (var func in conversions) {
// export Raw versions
convert[func + "Raw"] = (function(func) {
// accept array or plain args
return function(arg) {
if (typeof arg == "number")
arg = Array.prototype.slice.call(arguments);
return conversions[func](arg);
}
})(func);
var pair = /(\w+)2(\w+)/.exec(func),
from = pair[1],
to = pair[2];
// export rgb2hsl and ["rgb"]["hsl"]
convert[from] = convert[from] || {};
convert[from][to] = convert[func] = (function(func) {
return function(arg) {
if (typeof arg == "number")
arg = Array.prototype.slice.call(arguments);
var val = conversions[func](arg);
if (typeof val == "string" || val === undefined)
return val; // keyword
for (var i = 0; i < val.length; i++)
val[i] = Math.round(val[i]);
return val;
}
})(func);
}
/* Converter does lazy conversion and caching */
var Converter = function() {
this.convs = {};
};
/* Either get the values for a space or
set the values for a space, depending on args */
Converter.prototype.routeSpace = function(space, args) {
var values = args[0];
if (values === undefined) {
// color.rgb()
return this.getValues(space);
}
// color.rgb(10, 10, 10)
if (typeof values == "number") {
values = Array.prototype.slice.call(args);
}
return this.setValues(space, values);
};
/* Set the values for a space, invalidating cache */
Converter.prototype.setValues = function(space, values) {
this.space = space;
this.convs = {};
this.convs[space] = values;
return this;
};
/* Get the values for a space. If there's already
a conversion for the space, fetch it, otherwise
compute it */
Converter.prototype.getValues = function(space) {
var vals = this.convs[space];
if (!vals) {
var fspace = this.space,
from = this.convs[fspace];
vals = convert[fspace][space](from);
this.convs[space] = vals;
}
return vals;
};
["rgb", "hsl", "hsv", "cmyk", "keyword"].forEach(function(space) {
Converter.prototype[space] = function(vals) {
return this.routeSpace(space, arguments);
}
});
module.exports = convert;
},{"4":4}],6:[function(require,module,exports){
module.exports = {
"aliceblue": [240, 248, 255],
"antiquewhite": [250, 235, 215],
"aqua": [0, 255, 255],
"aquamarine": [127, 255, 212],
"azure": [240, 255, 255],
"beige": [245, 245, 220],
"bisque": [255, 228, 196],
"black": [0, 0, 0],
"blanchedalmond": [255, 235, 205],
"blue": [0, 0, 255],
"blueviolet": [138, 43, 226],
"brown": [165, 42, 42],
"burlywood": [222, 184, 135],
"cadetblue": [95, 158, 160],
"chartreuse": [127, 255, 0],
"chocolate": [210, 105, 30],
"coral": [255, 127, 80],
"cornflowerblue": [100, 149, 237],
"cornsilk": [255, 248, 220],
"crimson": [220, 20, 60],
"cyan": [0, 255, 255],
"darkblue": [0, 0, 139],
"darkcyan": [0, 139, 139],
"darkgoldenrod": [184, 134, 11],
"darkgray": [169, 169, 169],
"darkgreen": [0, 100, 0],
"darkgrey": [169, 169, 169],
"darkkhaki": [189, 183, 107],
"darkmagenta": [139, 0, 139],
"darkolivegreen": [85, 107, 47],
"darkorange": [255, 140, 0],
"darkorchid": [153, 50, 204],
"darkred": [139, 0, 0],
"darksalmon": [233, 150, 122],
"darkseagreen": [143, 188, 143],
"darkslateblue": [72, 61, 139],
"darkslategray": [47, 79, 79],
"darkslategrey": [47, 79, 79],
"darkturquoise": [0, 206, 209],
"darkviolet": [148, 0, 211],
"deeppink": [255, 20, 147],
"deepskyblue": [0, 191, 255],
"dimgray": [105, 105, 105],
"dimgrey": [105, 105, 105],
"dodgerblue": [30, 144, 255],
"firebrick": [178, 34, 34],
"floralwhite": [255, 250, 240],
"forestgreen": [34, 139, 34],
"fuchsia": [255, 0, 255],
"gainsboro": [220, 220, 220],
"ghostwhite": [248, 248, 255],
"gold": [255, 215, 0],
"goldenrod": [218, 165, 32],
"gray": [128, 128, 128],
"green": [0, 128, 0],
"greenyellow": [173, 255, 47],
"grey": [128, 128, 128],
"honeydew": [240, 255, 240],
"hotpink": [255, 105, 180],
"indianred": [205, 92, 92],
"indigo": [75, 0, 130],
"ivory": [255, 255, 240],
"khaki": [240, 230, 140],
"lavender": [230, 230, 250],
"lavenderblush": [255, 240, 245],
"lawngreen": [124, 252, 0],
"lemonchiffon": [255, 250, 205],
"lightblue": [173, 216, 230],
"lightcoral": [240, 128, 128],
"lightcyan": [224, 255, 255],
"lightgoldenrodyellow": [250, 250, 210],
"lightgray": [211, 211, 211],
"lightgreen": [144, 238, 144],
"lightgrey": [211, 211, 211],
"lightpink": [255, 182, 193],
"lightsalmon": [255, 160, 122],
"lightseagreen": [32, 178, 170],
"lightskyblue": [135, 206, 250],
"lightslategray": [119, 136, 153],
"lightslategrey": [119, 136, 153],
"lightsteelblue": [176, 196, 222],
"lightyellow": [255, 255, 224],
"lime": [0, 255, 0],
"limegreen": [50, 205, 50],
"linen": [250, 240, 230],
"magenta": [255, 0, 255],
"maroon": [128, 0, 0],
"mediumaquamarine": [102, 205, 170],
"mediumblue": [0, 0, 205],
"mediumorchid": [186, 85, 211],
"mediumpurple": [147, 112, 219],
"mediumseagreen": [60, 179, 113],
"mediumslateblue": [123, 104, 238],
"mediumspringgreen": [0, 250, 154],
"mediumturquoise": [72, 209, 204],
"mediumvioletred": [199, 21, 133],
"midnightblue": [25, 25, 112],
"mintcream": [245, 255, 250],
"mistyrose": [255, 228, 225],
"moccasin": [255, 228, 181],
"navajowhite": [255, 222, 173],
"navy": [0, 0, 128],
"oldlace": [253, 245, 230],
"olive": [128, 128, 0],
"olivedrab": [107, 142, 35],
"orange": [255, 165, 0],
"orangered": [255, 69, 0],
"orchid": [218, 112, 214],
"palegoldenrod": [238, 232, 170],
"palegreen": [152, 251, 152],
"paleturquoise": [175, 238, 238],
"palevioletred": [219, 112, 147],
"papayawhip": [255, 239, 213],
"peachpuff": [255, 218, 185],
"peru": [205, 133, 63],
"pink": [255, 192, 203],
"plum": [221, 160, 221],
"powderblue": [176, 224, 230],
"purple": [128, 0, 128],
"rebeccapurple": [102, 51, 153],
"red": [255, 0, 0],
"rosybrown": [188, 143, 143],
"royalblue": [65, 105, 225],
"saddlebrown": [139, 69, 19],
"salmon": [250, 128, 114],
"sandybrown": [244, 164, 96],
"seagreen": [46, 139, 87],
"seashell": [255, 245, 238],
"sienna": [160, 82, 45],
"silver": [192, 192, 192],
"skyblue": [135, 206, 235],
"slateblue": [106, 90, 205],
"slategray": [112, 128, 144],
"slategrey": [112, 128, 144],
"snow": [255, 250, 250],
"springgreen": [0, 255, 127],
"steelblue": [70, 130, 180],
"tan": [210, 180, 140],
"teal": [0, 128, 128],
"thistle": [216, 191, 216],
"tomato": [255, 99, 71],
"turquoise": [64, 224, 208],
"violet": [238, 130, 238],
"wheat": [245, 222, 179],
"white": [255, 255, 255],
"whitesmoke": [245, 245, 245],
"yellow": [255, 255, 0],
"yellowgreen": [154, 205, 50]
};
},{}],7:[function(require,module,exports){
/**
* @namespace Chart
*/
var Chart = require(28)();
require(26)(Chart);
require(42)(Chart);
require(22)(Chart);
require(31)(Chart);
require(25)(Chart);
require(21)(Chart);
require(23)(Chart);
require(24)(Chart);
require(29)(Chart);
require(33)(Chart);
require(34)(Chart);
require(32)(Chart);
require(35)(Chart);
require(30)(Chart);
require(27)(Chart);
require(36)(Chart);
require(37)(Chart);
require(38)(Chart);
require(39)(Chart);
require(40)(Chart);
require(45)(Chart);
require(43)(Chart);
require(44)(Chart);
require(46)(Chart);
require(47)(Chart);
require(48)(Chart);
// Controllers must be loaded after elements
// See Chart.core.datasetController.dataElementType
require(15)(Chart);
require(16)(Chart);
require(17)(Chart);
require(18)(Chart);
require(19)(Chart);
require(20)(Chart);
require(8)(Chart);
require(9)(Chart);
require(10)(Chart);
require(11)(Chart);
require(12)(Chart);
require(13)(Chart);
require(14)(Chart);
window.Chart = module.exports = Chart;
},{"10":10,"11":11,"12":12,"13":13,"14":14,"15":15,"16":16,"17":17,"18":18,"19":19,"20":20,"21":21,"22":22,"23":23,"24":24,"25":25,"26":26,"27":27,"28":28,"29":29,"30":30,"31":31,"32":32,"33":33,"34":34,"35":35,"36":36,"37":37,"38":38,"39":39,"40":40,"42":42,"43":43,"44":44,"45":45,"46":46,"47":47,"48":48,"8":8,"9":9}],8:[function(require,module,exports){
'use strict';
module.exports = function(Chart) {
Chart.Bar = function(context, config) {
config.type = 'bar';
return new Chart(context, config);
};
};
},{}],9:[function(require,module,exports){
'use strict';
module.exports = function(Chart) {
Chart.Bubble = function(context, config) {
config.type = 'bubble';
return new Chart(context, config);
};
};
},{}],10:[function(require,module,exports){
'use strict';
module.exports = function(Chart) {
Chart.Doughnut = function(context, config) {
config.type = 'doughnut';
return new Chart(context, config);
};
};
},{}],11:[function(require,module,exports){
'use strict';
module.exports = function(Chart) {
Chart.Line = function(context, config) {
config.type = 'line';
return new Chart(context, config);
};
};
},{}],12:[function(require,module,exports){
'use strict';
module.exports = function(Chart) {
Chart.PolarArea = function(context, config) {
config.type = 'polarArea';
return new Chart(context, config);
};
};
},{}],13:[function(require,module,exports){
'use strict';
module.exports = function(Chart) {
Chart.Radar = function(context, config) {
config.type = 'radar';
return new Chart(context, config);
};
};
},{}],14:[function(require,module,exports){
'use strict';
module.exports = function(Chart) {
var defaultConfig = {
hover: {
mode: 'single'
},
scales: {
xAxes: [{
type: 'linear', // scatter should not use a category axis
position: 'bottom',
id: 'x-axis-1' // need an ID so datasets can reference the scale
}],
yAxes: [{
type: 'linear',
position: 'left',
id: 'y-axis-1'
}]
},
tooltips: {
callbacks: {
title: function() {
// Title doesn't make sense for scatter since we format the data as a point
return '';
},
label: function(tooltipItem) {
return '(' + tooltipItem.xLabel + ', ' + tooltipItem.yLabel + ')';
}
}
}
};
// Register the default config for this type
Chart.defaults.scatter = defaultConfig;
// Scatter charts use line controllers
Chart.controllers.scatter = Chart.controllers.line;
Chart.Scatter = function(context, config) {
config.type = 'scatter';
return new Chart(context, config);
};
};
},{}],15:[function(require,module,exports){
'use strict';
module.exports = function(Chart) {
var helpers = Chart.helpers;
Chart.defaults.bar = {
hover: {
mode: 'label'
},
scales: {
xAxes: [{
type: 'category',
// Specific to Bar Controller
categoryPercentage: 0.8,
barPercentage: 0.9,
// grid line settings
gridLines: {
offsetGridLines: true
}
}],
yAxes: [{
type: 'linear'
}]
}
};
Chart.controllers.bar = Chart.DatasetController.extend({
dataElementType: Chart.elements.Rectangle,
initialize: function(chart, datasetIndex) {
Chart.DatasetController.prototype.initialize.call(this, chart, datasetIndex);
var me = this;
var meta = me.getMeta();
var dataset = me.getDataset();
meta.stack = dataset.stack;
// Use this to indicate that this is a bar dataset.
meta.bar = true;
},
// Correctly calculate the bar width accounting for stacks and the fact that not all bars are visible
getStackCount: function() {
var me = this;
var meta = me.getMeta();
var yScale = me.getScaleForId(meta.yAxisID);
var stacks = [];
helpers.each(me.chart.data.datasets, function(dataset, datasetIndex) {
var dsMeta = me.chart.getDatasetMeta(datasetIndex);
if (dsMeta.bar && me.chart.isDatasetVisible(datasetIndex) &&
(yScale.options.stacked === false ||
(yScale.options.stacked === true && stacks.indexOf(dsMeta.stack) === -1) ||
(yScale.options.stacked === undefined && (dsMeta.stack === undefined || stacks.indexOf(dsMeta.stack) === -1)))) {
stacks.push(dsMeta.stack);
}
}, me);
return stacks.length;
},
update: function(reset) {
var me = this;
helpers.each(me.getMeta().data, function(rectangle, index) {
me.updateElement(rectangle, index, reset);
}, me);
},
updateElement: function(rectangle, index, reset) {
var me = this;
var meta = me.getMeta();
var xScale = me.getScaleForId(meta.xAxisID);
var yScale = me.getScaleForId(meta.yAxisID);
var scaleBase = yScale.getBasePixel();
var rectangleElementOptions = me.chart.options.elements.rectangle;
var custom = rectangle.custom || {};
var dataset = me.getDataset();
rectangle._xScale = xScale;
rectangle._yScale = yScale;
rectangle._datasetIndex = me.index;
rectangle._index = index;
var ruler = me.getRuler(index); // The index argument for compatible
rectangle._model = {
x: me.calculateBarX(index, me.index, ruler),
y: reset ? scaleBase : me.calculateBarY(index, me.index),
// Tooltip
label: me.chart.data.labels[index],
datasetLabel: dataset.label,
// Appearance
horizontal: false,
base: reset ? scaleBase : me.calculateBarBase(me.index, index),
width: me.calculateBarWidth(ruler),
backgroundColor: custom.backgroundColor ? custom.backgroundColor : helpers.getValueAtIndexOrDefault(dataset.backgroundColor, index, rectangleElementOptions.backgroundColor),
borderSkipped: custom.borderSkipped ? custom.borderSkipped : rectangleElementOptions.borderSkipped,
borderColor: custom.borderColor ? custom.borderColor : helpers.getValueAtIndexOrDefault(dataset.borderColor, index, rectangleElementOptions.borderColor),
borderWidth: custom.borderWidth ? custom.borderWidth : helpers.getValueAtIndexOrDefault(dataset.borderWidth, index, rectangleElementOptions.borderWidth)
};
rectangle.pivot();
},
calculateBarBase: function(datasetIndex, index) {
var me = this;
var meta = me.getMeta();
var yScale = me.getScaleForId(meta.yAxisID);
var base = yScale.getBaseValue();
var original = base;
if ((yScale.options.stacked === true) ||
(yScale.options.stacked === undefined && meta.stack !== undefined)) {
var chart = me.chart;
var datasets = chart.data.datasets;
var value = Number(datasets[datasetIndex].data[index]);
for (var i = 0; i < datasetIndex; i++) {
var currentDs = datasets[i];
var currentDsMeta = chart.getDatasetMeta(i);
if (currentDsMeta.bar && currentDsMeta.yAxisID === yScale.id && chart.isDatasetVisible(i) &&
meta.stack === currentDsMeta.stack) {
var currentVal = Number(currentDs.data[index]);
base += value < 0 ? Math.min(currentVal, original) : Math.max(currentVal, original);
}
}
return yScale.getPixelForValue(base);
}
return yScale.getBasePixel();
},
getRuler: function() {
var me = this;
var meta = me.getMeta();
var xScale = me.getScaleForId(meta.xAxisID);
var stackCount = me.getStackCount();
var tickWidth = xScale.width / xScale.ticks.length;
var categoryWidth = tickWidth * xScale.options.categoryPercentage;
var categorySpacing = (tickWidth - (tickWidth * xScale.options.categoryPercentage)) / 2;
var fullBarWidth = categoryWidth / stackCount;
var barWidth = fullBarWidth * xScale.options.barPercentage;
var barSpacing = fullBarWidth - (fullBarWidth * xScale.options.barPercentage);
return {
stackCount: stackCount,
tickWidth: tickWidth,
categoryWidth: categoryWidth,
categorySpacing: categorySpacing,
fullBarWidth: fullBarWidth,
barWidth: barWidth,
barSpacing: barSpacing
};
},
calculateBarWidth: function(ruler) {
var me = this;
var meta = me.getMeta();
var xScale = me.getScaleForId(meta.xAxisID);
if (xScale.options.barThickness) {
return xScale.options.barThickness;
}
return ruler.barWidth;
},
// Get stack index from the given dataset index accounting for stacks and the fact that not all bars are visible
getStackIndex: function(datasetIndex) {
var me = this;
var meta = me.chart.getDatasetMeta(datasetIndex);
var yScale = me.getScaleForId(meta.yAxisID);
var dsMeta, j;
var stacks = [meta.stack];
for (j = 0; j < datasetIndex; ++j) {
dsMeta = this.chart.getDatasetMeta(j);
if (dsMeta.bar && this.chart.isDatasetVisible(j) &&
(yScale.options.stacked === false ||
(yScale.options.stacked === true && stacks.indexOf(dsMeta.stack) === -1) ||
(yScale.options.stacked === undefined && (dsMeta.stack === undefined || stacks.indexOf(dsMeta.stack) === -1)))) {
stacks.push(dsMeta.stack);
}
}
return stacks.length - 1;
},
calculateBarX: function(index, datasetIndex, ruler) {
var me = this;
var meta = me.getMeta();
var xScale = me.getScaleForId(meta.xAxisID);
var stackIndex = me.getStackIndex(datasetIndex);
var leftTick = xScale.getPixelForValue(null, index, datasetIndex, me.chart.isCombo);
leftTick -= me.chart.isCombo ? (ruler.tickWidth / 2) : 0;
return leftTick +
(ruler.barWidth / 2) +
ruler.categorySpacing +
(ruler.barWidth * stackIndex) +
(ruler.barSpacing / 2) +
(ruler.barSpacing * stackIndex);
},
calculateBarY: function(index, datasetIndex) {
var me = this;
var meta = me.getMeta();
var yScale = me.getScaleForId(meta.yAxisID);
var value = Number(me.getDataset().data[index]);
if (yScale.options.stacked ||
(yScale.options.stacked === undefined && meta.stack !== undefined)) {
var base = yScale.getBaseValue();
var sumPos = base,
sumNeg = base;
for (var i = 0; i < datasetIndex; i++) {
var ds = me.chart.data.datasets[i];
var dsMeta = me.chart.getDatasetMeta(i);
if (dsMeta.bar && dsMeta.yAxisID === yScale.id && me.chart.isDatasetVisible(i) &&
meta.stack === dsMeta.stack) {
var stackedVal = Number(ds.data[index]);
if (stackedVal < 0) {
sumNeg += stackedVal || 0;
} else {
sumPos += stackedVal || 0;
}
}
}
if (value < 0) {
return yScale.getPixelForValue(sumNeg + value);
}
return yScale.getPixelForValue(sumPos + value);
}
return yScale.getPixelForValue(value);
},
draw: function(ease) {
var me = this;
var easingDecimal = ease || 1;
var metaData = me.getMeta().data;
var dataset = me.getDataset();
var i, len;
Chart.canvasHelpers.clipArea(me.chart.chart.ctx, me.chart.chartArea);
for (i = 0, len = metaData.length; i < len; ++i) {
var d = dataset.data[i];
if (d !== null && d !== undefined && !isNaN(d)) {
metaData[i].transition(easingDecimal).draw();
}
}
Chart.canvasHelpers.unclipArea(me.chart.chart.ctx);
},
setHoverStyle: function(rectangle) {
var dataset = this.chart.data.datasets[rectangle._datasetIndex];
var index = rectangle._index;
var custom = rectangle.custom || {};
var model = rectangle._model;
model.backgroundColor = custom.hoverBackgroundColor ? custom.hoverBackgroundColor : helpers.getValueAtIndexOrDefault(dataset.hoverBackgroundColor, index, helpers.getHoverColor(model.backgroundColor));
model.borderColor = custom.hoverBorderColor ? custom.hoverBorderColor : helpers.getValueAtIndexOrDefault(dataset.hoverBorderColor, index, helpers.getHoverColor(model.borderColor));
model.borderWidth = custom.hoverBorderWidth ? custom.hoverBorderWidth : helpers.getValueAtIndexOrDefault(dataset.hoverBorderWidth, index, model.borderWidth);
},
removeHoverStyle: function(rectangle) {
var dataset = this.chart.data.datasets[rectangle._datasetIndex];
var index = rectangle._index;
var custom = rectangle.custom || {};
var model = rectangle._model;
var rectangleElementOptions = this.chart.options.elements.rectangle;
model.backgroundColor = custom.backgroundColor ? custom.backgroundColor : helpers.getValueAtIndexOrDefault(dataset.backgroundColor, index, rectangleElementOptions.backgroundColor);
model.borderColor = custom.borderColor ? custom.borderColor : helpers.getValueAtIndexOrDefault(dataset.borderColor, index, rectangleElementOptions.borderColor);
model.borderWidth = custom.borderWidth ? custom.borderWidth : helpers.getValueAtIndexOrDefault(dataset.borderWidth, index, rectangleElementOptions.borderWidth);
}
});
// including horizontalBar in the bar file, instead of a file of its own
// it extends bar (like pie extends doughnut)
Chart.defaults.horizontalBar = {
hover: {
mode: 'label'
},
scales: {
xAxes: [{
type: 'linear',
position: 'bottom'
}],
yAxes: [{
position: 'left',
type: 'category',
// Specific to Horizontal Bar Controller
categoryPercentage: 0.8,
barPercentage: 0.9,
// grid line settings
gridLines: {
offsetGridLines: true
}
}]
},
elements: {
rectangle: {
borderSkipped: 'left'
}
},
tooltips: {
callbacks: {
title: function(tooltipItems, data) {
// Pick first xLabel for now
var title = '';
if (tooltipItems.length > 0) {
if (tooltipItems[0].yLabel) {
title = tooltipItems[0].yLabel;
} else if (data.labels.length > 0 && tooltipItems[0].index < data.labels.length) {
title = data.labels[tooltipItems[0].index];
}
}
return title;
},
label: function(tooltipItem, data) {
var datasetLabel = data.datasets[tooltipItem.datasetIndex].label || '';
return datasetLabel + ': ' + tooltipItem.xLabel;
}
}
}
};
Chart.controllers.horizontalBar = Chart.controllers.bar.extend({
// Correctly calculate the bar width accounting for stacks and the fact that not all bars are visible
getStackCount: function() {
var me = this;
var meta = me.getMeta();
var xScale = me.getScaleForId(meta.xAxisID);
var stacks = [];
helpers.each(me.chart.data.datasets, function(dataset, datasetIndex) {
var dsMeta = me.chart.getDatasetMeta(datasetIndex);
if (dsMeta.bar && me.chart.isDatasetVisible(datasetIndex) &&
(xScale.options.stacked === false ||
(xScale.options.stacked === true && stacks.indexOf(dsMeta.stack) === -1) ||
(xScale.options.stacked === undefined && (dsMeta.stack === undefined || stacks.indexOf(dsMeta.stack) === -1)))) {
stacks.push(dsMeta.stack);
}
}, me);
return stacks.length;
},
updateElement: function(rectangle, index, reset) {
var me = this;
var meta = me.getMeta();
var xScale = me.getScaleForId(meta.xAxisID);
var yScale = me.getScaleForId(meta.yAxisID);
var scaleBase = xScale.getBasePixel();
var custom = rectangle.custom || {};
var dataset = me.getDataset();
var rectangleElementOptions = me.chart.options.elements.rectangle;
rectangle._xScale = xScale;
rectangle._yScale = yScale;
rectangle._datasetIndex = me.index;
rectangle._index = index;
var ruler = me.getRuler(index); // The index argument for compatible
rectangle._model = {
x: reset ? scaleBase : me.calculateBarX(index, me.index),
y: me.calculateBarY(index, me.index, ruler),
// Tooltip
label: me.chart.data.labels[index],
datasetLabel: dataset.label,
// Appearance
horizontal: true,
base: reset ? scaleBase : me.calculateBarBase(me.index, index),
height: me.calculateBarHeight(ruler),
backgroundColor: custom.backgroundColor ? custom.backgroundColor : helpers.getValueAtIndexOrDefault(dataset.backgroundColor, index, rectangleElementOptions.backgroundColor),
borderSkipped: custom.borderSkipped ? custom.borderSkipped : rectangleElementOptions.borderSkipped,
borderColor: custom.borderColor ? custom.borderColor : helpers.getValueAtIndexOrDefault(dataset.borderColor, index, rectangleElementOptions.borderColor),
borderWidth: custom.borderWidth ? custom.borderWidth : helpers.getValueAtIndexOrDefault(dataset.borderWidth, index, rectangleElementOptions.borderWidth)
};
rectangle.pivot();
},
calculateBarBase: function(datasetIndex, index) {
var me = this;
var meta = me.getMeta();
var xScale = me.getScaleForId(meta.xAxisID);
var base = xScale.getBaseValue();
var originalBase = base;
if (xScale.options.stacked ||
(xScale.options.stacked === undefined && meta.stack !== undefined)) {
var chart = me.chart;
var datasets = chart.data.datasets;
var value = Number(datasets[datasetIndex].data[index]);
for (var i = 0; i < datasetIndex; i++) {
var currentDs = datasets[i];
var currentDsMeta = chart.getDatasetMeta(i);
if (currentDsMeta.bar && currentDsMeta.xAxisID === xScale.id && chart.isDatasetVisible(i) &&
meta.stack === currentDsMeta.stack) {
var currentVal = Number(currentDs.data[index]);
base += value < 0 ? Math.min(currentVal, originalBase) : Math.max(currentVal, originalBase);
}
}
return xScale.getPixelForValue(base);
}
return xScale.getBasePixel();
},
getRuler: function() {
var me = this;
var meta = me.getMeta();
var yScale = me.getScaleForId(meta.yAxisID);
var stackCount = me.getStackCount();
var tickHeight = yScale.height / yScale.ticks.length;
var categoryHeight = tickHeight * yScale.options.categoryPercentage;
var categorySpacing = (tickHeight - (tickHeight * yScale.options.categoryPercentage)) / 2;
var fullBarHeight = categoryHeight / stackCount;
var barHeight = fullBarHeight * yScale.options.barPercentage;
var barSpacing = fullBarHeight - (fullBarHeight * yScale.options.barPercentage);
return {
stackCount: stackCount,
tickHeight: tickHeight,
categoryHeight: categoryHeight,
categorySpacing: categorySpacing,
fullBarHeight: fullBarHeight,
barHeight: barHeight,
barSpacing: barSpacing
};
},
calculateBarHeight: function(ruler) {
var me = this;
var meta = me.getMeta();
var yScale = me.getScaleForId(meta.yAxisID);
if (yScale.options.barThickness) {
return yScale.options.barThickness;
}
return ruler.barHeight;
},
// Get stack index from the given dataset index accounting for stacks and the fact that not all bars are visible
getStackIndex: function(datasetIndex) {
var me = this;
var meta = me.chart.getDatasetMeta(datasetIndex);
var xScale = me.getScaleForId(meta.xAxisID);
var dsMeta, j;
var stacks = [meta.stack];
for (j = 0; j < datasetIndex; ++j) {
dsMeta = this.chart.getDatasetMeta(j);
if (dsMeta.bar && this.chart.isDatasetVisible(j) &&
(xScale.options.stacked === false ||
(xScale.options.stacked === true && stacks.indexOf(dsMeta.stack) === -1) ||
(xScale.options.stacked === undefined && (dsMeta.stack === undefined || stacks.indexOf(dsMeta.stack) === -1)))) {
stacks.push(dsMeta.stack);
}
}
return stacks.length - 1;
},
calculateBarX: function(index, datasetIndex) {
var me = this;
var meta = me.getMeta();
var xScale = me.getScaleForId(meta.xAxisID);
var value = Number(me.getDataset().data[index]);
if (xScale.options.stacked ||
(xScale.options.stacked === undefined && meta.stack !== undefined)) {
var base = xScale.getBaseValue();
var sumPos = base,
sumNeg = base;
for (var i = 0; i < datasetIndex; i++) {
var ds = me.chart.data.datasets[i];
var dsMeta = me.chart.getDatasetMeta(i);
if (dsMeta.bar && dsMeta.xAxisID === xScale.id && me.chart.isDatasetVisible(i) &&
meta.stack === dsMeta.stack) {
var stackedVal = Number(ds.data[index]);
if (stackedVal < 0) {
sumNeg += stackedVal || 0;
} else {
sumPos += stackedVal || 0;
}
}
}
if (value < 0) {
return xScale.getPixelForValue(sumNeg + value);
}
return xScale.getPixelForValue(sumPos + value);
}
return xScale.getPixelForValue(value);
},
calculateBarY: function(index, datasetIndex, ruler) {
var me = this;
var meta = me.getMeta();
var yScale = me.getScaleForId(meta.yAxisID);
var stackIndex = me.getStackIndex(datasetIndex);
var topTick = yScale.getPixelForValue(null, index, datasetIndex, me.chart.isCombo);
topTick -= me.chart.isCombo ? (ruler.tickHeight / 2) : 0;
return topTick +
(ruler.barHeight / 2) +
ruler.categorySpacing +
(ruler.barHeight * stackIndex) +
(ruler.barSpacing / 2) +
(ruler.barSpacing * stackIndex);
}
});
};
},{}],16:[function(require,module,exports){
'use strict';
module.exports = function(Chart) {
var helpers = Chart.helpers;
Chart.defaults.bubble = {
hover: {
mode: 'single'
},
scales: {
xAxes: [{
type: 'linear', // bubble should probably use a linear scale by default
position: 'bottom',
id: 'x-axis-0' // need an ID so datasets can reference the scale
}],
yAxes: [{
type: 'linear',
position: 'left',
id: 'y-axis-0'
}]
},
tooltips: {
callbacks: {
title: function() {
// Title doesn't make sense for scatter since we format the data as a point
return '';
},
label: function(tooltipItem, data) {
var datasetLabel = data.datasets[tooltipItem.datasetIndex].label || '';
var dataPoint = data.datasets[tooltipItem.datasetIndex].data[tooltipItem.index];
return datasetLabel + ': (' + tooltipItem.xLabel + ', ' + tooltipItem.yLabel + ', ' + dataPoint.r + ')';
}
}
}
};
Chart.controllers.bubble = Chart.DatasetController.extend({
dataElementType: Chart.elements.Point,
update: function(reset) {
var me = this;
var meta = me.getMeta();
var points = meta.data;
// Update Points
helpers.each(points, function(point, index) {
me.updateElement(point, index, reset);
});
},
updateElement: function(point, index, reset) {
var me = this;
var meta = me.getMeta();
var xScale = me.getScaleForId(meta.xAxisID);
var yScale = me.getScaleForId(meta.yAxisID);
var custom = point.custom || {};
var dataset = me.getDataset();
var data = dataset.data[index];
var pointElementOptions = me.chart.options.elements.point;
var dsIndex = me.index;
helpers.extend(point, {
// Utility
_xScale: xScale,
_yScale: yScale,
_datasetIndex: dsIndex,
_index: index,
// Desired view properties
_model: {
x: reset ? xScale.getPixelForDecimal(0.5) : xScale.getPixelForValue(typeof data === 'object' ? data : NaN, index, dsIndex, me.chart.isCombo),
y: reset ? yScale.getBasePixel() : yScale.getPixelForValue(data, index, dsIndex),
// Appearance
radius: reset ? 0 : custom.radius ? custom.radius : me.getRadius(data),
// Tooltip
hitRadius: custom.hitRadius ? custom.hitRadius : helpers.getValueAtIndexOrDefault(dataset.hitRadius, index, pointElementOptions.hitRadius)
}
});
// Trick to reset the styles of the point
Chart.DatasetController.prototype.removeHoverStyle.call(me, point, pointElementOptions);
var model = point._model;
model.skip = custom.skip ? custom.skip : (isNaN(model.x) || isNaN(model.y));
point.pivot();
},
getRadius: function(value) {
return value.r || this.chart.options.elements.point.radius;
},
setHoverStyle: function(point) {
var me = this;
Chart.DatasetController.prototype.setHoverStyle.call(me, point);
// Radius
var dataset = me.chart.data.datasets[point._datasetIndex];
var index = point._index;
var custom = point.custom || {};
var model = point._model;
model.radius = custom.hoverRadius ? custom.hoverRadius : (helpers.getValueAtIndexOrDefault(dataset.hoverRadius, index, me.chart.options.elements.point.hoverRadius)) + me.getRadius(dataset.data[index]);
},
removeHoverStyle: function(point) {
var me = this;
Chart.DatasetController.prototype.removeHoverStyle.call(me, point, me.chart.options.elements.point);
var dataVal = me.chart.data.datasets[point._datasetIndex].data[point._index];
var custom = point.custom || {};
var model = point._model;
model.radius = custom.radius ? custom.radius : me.getRadius(dataVal);
}
});
};
},{}],17:[function(require,module,exports){
'use strict';
module.exports = function(Chart) {
var helpers = Chart.helpers,
defaults = Chart.defaults;
defaults.doughnut = {
animation: {
// Boolean - Whether we animate the rotation of the Doughnut
animateRotate: true,
// Boolean - Whether we animate scaling the Doughnut from the centre
animateScale: false
},
aspectRatio: 1,
hover: {
mode: 'single'
},
legendCallback: function(chart) {
var text = [];
text.push('<ul class="' + chart.id + '-legend">');
var data = chart.data;
var datasets = data.datasets;
var labels = data.labels;
if (datasets.length) {
for (var i = 0; i < datasets[0].data.length; ++i) {
text.push('<li><span style="background-color:' + datasets[0].backgroundColor[i] + '"></span>');
if (labels[i]) {
text.push(labels[i]);
}
text.push('</li>');
}
}
text.push('</ul>');
return text.join('');
},
legend: {
labels: {
generateLabels: function(chart) {
var data = chart.data;
if (data.labels.length && data.datasets.length) {
return data.labels.map(function(label, i) {
var meta = chart.getDatasetMeta(0);
var ds = data.datasets[0];
var arc = meta.data[i];
var custom = arc && arc.custom || {};
var getValueAtIndexOrDefault = helpers.getValueAtIndexOrDefault;
var arcOpts = chart.options.elements.arc;
var fill = custom.backgroundColor ? custom.backgroundColor : getValueAtIndexOrDefault(ds.backgroundColor, i, arcOpts.backgroundColor);
var stroke = custom.borderColor ? custom.borderColor : getValueAtIndexOrDefault(ds.borderColor, i, arcOpts.borderColor);
var bw = custom.borderWidth ? custom.borderWidth : getValueAtIndexOrDefault(ds.borderWidth, i, arcOpts.borderWidth);
return {
text: label,
fillStyle: fill,
strokeStyle: stroke,
lineWidth: bw,
hidden: isNaN(ds.data[i]) || meta.data[i].hidden,
// Extra data used for toggling the correct item
index: i
};
});
}
return [];
}
},
onClick: function(e, legendItem) {
var index = legendItem.index;
var chart = this.chart;
var i, ilen, meta;
for (i = 0, ilen = (chart.data.datasets || []).length; i < ilen; ++i) {
meta = chart.getDatasetMeta(i);
// toggle visibility of index if exists
if (meta.data[index]) {
meta.data[index].hidden = !meta.data[index].hidden;
}
}
chart.update();
}
},
// The percentage of the chart that we cut out of the middle.
cutoutPercentage: 50,
// The rotation of the chart, where the first data arc begins.
rotation: Math.PI * -0.5,
// The total circumference of the chart.
circumference: Math.PI * 2.0,
// Need to override these to give a nice default
tooltips: {
callbacks: {
title: function() {
return '';
},
label: function(tooltipItem, data) {
var dataLabel = data.labels[tooltipItem.index];
var value = ': ' + data.datasets[tooltipItem.datasetIndex].data[tooltipItem.index];
if (helpers.isArray(dataLabel)) {
// show value on first line of multiline label
// need to clone because we are changing the value
dataLabel = dataLabel.slice();
dataLabel[0] += value;
} else {
dataLabel += value;
}
return dataLabel;
}
}
}
};
defaults.pie = helpers.clone(defaults.doughnut);
helpers.extend(defaults.pie, {
cutoutPercentage: 0
});
Chart.controllers.doughnut = Chart.controllers.pie = Chart.DatasetController.extend({
dataElementType: Chart.elements.Arc,
linkScales: helpers.noop,
// Get index of the dataset in relation to the visible datasets. This allows determining the inner and outer radius correctly
getRingIndex: function(datasetIndex) {
var ringIndex = 0;
for (var j = 0; j < datasetIndex; ++j) {
if (this.chart.isDatasetVisible(j)) {
++ringIndex;
}
}
return ringIndex;
},
update: function(reset) {
var me = this;
var chart = me.chart,
chartArea = chart.chartArea,
opts = chart.options,
arcOpts = opts.elements.arc,
availableWidth = chartArea.right - chartArea.left - arcOpts.borderWidth,
availableHeight = chartArea.bottom - chartArea.top - arcOpts.borderWidth,
minSize = Math.min(availableWidth, availableHeight),
offset = {
x: 0,
y: 0
},
meta = me.getMeta(),
cutoutPercentage = opts.cutoutPercentage,
circumference = opts.circumference;
// If the chart's circumference isn't a full circle, calculate minSize as a ratio of the width/height of the arc
if (circumference < Math.PI * 2.0) {
var startAngle = opts.rotation % (Math.PI * 2.0);
startAngle += Math.PI * 2.0 * (startAngle >= Math.PI ? -1 : startAngle < -Math.PI ? 1 : 0);
var endAngle = startAngle + circumference;
var start = {x: Math.cos(startAngle), y: Math.sin(startAngle)};
var end = {x: Math.cos(endAngle), y: Math.sin(endAngle)};
var contains0 = (startAngle <= 0 && 0 <= endAngle) || (startAngle <= Math.PI * 2.0 && Math.PI * 2.0 <= endAngle);
var contains90 = (startAngle <= Math.PI * 0.5 && Math.PI * 0.5 <= endAngle) || (startAngle <= Math.PI * 2.5 && Math.PI * 2.5 <= endAngle);
var contains180 = (startAngle <= -Math.PI && -Math.PI <= endAngle) || (startAngle <= Math.PI && Math.PI <= endAngle);
var contains270 = (startAngle <= -Math.PI * 0.5 && -Math.PI * 0.5 <= endAngle) || (startAngle <= Math.PI * 1.5 && Math.PI * 1.5 <= endAngle);
var cutout = cutoutPercentage / 100.0;
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))};
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))};
var size = {width: (max.x - min.x) * 0.5, height: (max.y - min.y) * 0.5};
minSize = Math.min(availableWidth / size.width, availableHeight / size.height);
offset = {x: (max.x + min.x) * -0.5, y: (max.y + min.y) * -0.5};
}
chart.borderWidth = me.getMaxBorderWidth(meta.data);
chart.outerRadius = Math.max((minSize - chart.borderWidth) / 2, 0);
chart.innerRadius = Math.max(cutoutPercentage ? (chart.outerRadius / 100) * (cutoutPercentage) : 0, 0);
chart.radiusLength = (chart.outerRadius - chart.innerRadius) / chart.getVisibleDatasetCount();
chart.offsetX = offset.x * chart.outerRadius;
chart.offsetY = offset.y * chart.outerRadius;
meta.total = me.calculateTotal();
me.outerRadius = chart.outerRadius - (chart.radiusLength * me.getRingIndex(me.index));
me.innerRadius = Math.max(me.outerRadius - chart.radiusLength, 0);
helpers.each(meta.data, function(arc, index) {
me.updateElement(arc, index, reset);
});
},
updateElement: function(arc, index, reset) {
var me = this;
var chart = me.chart,
chartArea = chart.chartArea,
opts = chart.options,
animationOpts = opts.animation,
centerX = (chartArea.left + chartArea.right) / 2,
centerY = (chartArea.top + chartArea.bottom) / 2,
startAngle = opts.rotation, // non reset case handled later
endAngle = opts.rotation, // non reset case handled later
dataset = me.getDataset(),
circumference = reset && animationOpts.animateRotate ? 0 : arc.hidden ? 0 : me.calculateCircumference(dataset.data[index]) * (opts.circumference / (2.0 * Math.PI)),
innerRadius = reset && animationOpts.animateScale ? 0 : me.innerRadius,
outerRadius = reset && animationOpts.animateScale ? 0 : me.outerRadius,
valueAtIndexOrDefault = helpers.getValueAtIndexOrDefault;
helpers.extend(arc, {
// Utility
_datasetIndex: me.index,
_index: index,
// Desired view properties
_model: {
x: centerX + chart.offsetX,
y: centerY + chart.offsetY,
startAngle: startAngle,
endAngle: endAngle,
circumference: circumference,
outerRadius: outerRadius,
innerRadius: innerRadius,
label: valueAtIndexOrDefault(dataset.label, index, chart.data.labels[index])
}
});
var model = arc._model;
// Resets the visual styles
this.removeHoverStyle(arc);
// Set correct angles if not resetting
if (!reset || !animationOpts.animateRotate) {
if (index === 0) {
model.startAngle = opts.rotation;
} else {
model.startAngle = me.getMeta().data[index - 1]._model.endAngle;
}
model.endAngle = model.startAngle + model.circumference;
}
arc.pivot();
},
removeHoverStyle: function(arc) {
Chart.DatasetController.prototype.removeHoverStyle.call(this, arc, this.chart.options.elements.arc);
},
calculateTotal: function() {
var dataset = this.getDataset();
var meta = this.getMeta();
var total = 0;
var value;
helpers.each(meta.data, function(element, index) {
value = dataset.data[index];
if (!isNaN(value) && !element.hidden) {
total += Math.abs(value);
}
});
/* if (total === 0) {
total = NaN;
}*/
return total;
},
calculateCircumference: function(value) {
var total = this.getMeta().total;
if (total > 0 && !isNaN(value)) {
return (Math.PI * 2.0) * (value / total);
}
return 0;
},
// gets the max border or hover width to properly scale pie charts
getMaxBorderWidth: function(elements) {
var max = 0,
index = this.index,
length = elements.length,
borderWidth,
hoverWidth;
for (var i = 0; i < length; i++) {
borderWidth = elements[i]._model ? elements[i]._model.borderWidth : 0;
hoverWidth = elements[i]._chart ? elements[i]._chart.config.data.datasets[index].hoverBorderWidth : 0;
max = borderWidth > max ? borderWidth : max;
max = hoverWidth > max ? hoverWidth : max;
}
return max;
}
});
};
},{}],18:[function(require,module,exports){
'use strict';
module.exports = function(Chart) {
var helpers = Chart.helpers;
Chart.defaults.line = {
showLines: true,
spanGaps: false,
hover: {
mode: 'label'
},
scales: {
xAxes: [{
type: 'category',
id: 'x-axis-0'
}],
yAxes: [{
type: 'linear',
id: 'y-axis-0'
}]
}
};
function lineEnabled(dataset, options) {
return helpers.getValueOrDefault(dataset.showLine, options.showLines);
}
Chart.controllers.line = Chart.DatasetController.extend({
datasetElementType: Chart.elements.Line,
dataElementType: Chart.elements.Point,
update: function(reset) {
var me = this;
var meta = me.getMeta();
var line = meta.dataset;
var points = meta.data || [];
var options = me.chart.options;
var lineElementOptions = options.elements.line;
var scale = me.getScaleForId(meta.yAxisID);
var i, ilen, custom;
var dataset = me.getDataset();
var showLine = lineEnabled(dataset, options);
// Update Line
if (showLine) {
custom = line.custom || {};
// Compatibility: If the properties are defined with only the old name, use those values
if ((dataset.tension !== undefined) && (dataset.lineTension === undefined)) {
dataset.lineTension = dataset.tension;
}
// Utility
line._scale = scale;
line._datasetIndex = me.index;
// Data
line._children = points;
// Model
line._model = {
// Appearance
// The default behavior of lines is to break at null values, according
// to https://github.com/chartjs/Chart.js/issues/2435#issuecomment-216718158
// This option gives lines the ability to span gaps
spanGaps: dataset.spanGaps ? dataset.spanGaps : options.spanGaps,
tension: custom.tension ? custom.tension : helpers.getValueOrDefault(dataset.lineTension, lineElementOptions.tension),
backgroundColor: custom.backgroundColor ? custom.backgroundColor : (dataset.backgroundColor || lineElementOptions.backgroundColor),
borderWidth: custom.borderWidth ? custom.borderWidth : (dataset.borderWidth || lineElementOptions.borderWidth),
borderColor: custom.borderColor ? custom.borderColor : (dataset.borderColor || lineElementOptions.borderColor),
borderCapStyle: custom.borderCapStyle ? custom.borderCapStyle : (dataset.borderCapStyle || lineElementOptions.borderCapStyle),
borderDash: custom.borderDash ? custom.borderDash : (dataset.borderDash || lineElementOptions.borderDash),
borderDashOffset: custom.borderDashOffset ? custom.borderDashOffset : (dataset.borderDashOffset || lineElementOptions.borderDashOffset),
borderJoinStyle: custom.borderJoinStyle ? custom.borderJoinStyle : (dataset.borderJoinStyle || lineElementOptions.borderJoinStyle),
fill: custom.fill ? custom.fill : (dataset.fill !== undefined ? dataset.fill : lineElementOptions.fill),
steppedLine: custom.steppedLine ? custom.steppedLine : helpers.getValueOrDefault(dataset.steppedLine, lineElementOptions.stepped),
cubicInterpolationMode: custom.cubicInterpolationMode ? custom.cubicInterpolationMode : helpers.getValueOrDefault(dataset.cubicInterpolationMode, lineElementOptions.cubicInterpolationMode),
// Scale
scaleTop: scale.top,
scaleBottom: scale.bottom,
scaleZero: scale.getBasePixel()
};
line.pivot();
}
// Update Points
for (i=0, ilen=points.length; i<ilen; ++i) {
me.updateElement(points[i], i, reset);
}
if (showLine && line._model.tension !== 0) {
me.updateBezierControlPoints();
}
// Now pivot the point for animation
for (i=0, ilen=points.length; i<ilen; ++i) {
points[i].pivot();
}
},
getPointBackgroundColor: function(point, index) {
var backgroundColor = this.chart.options.elements.point.backgroundColor;
var dataset = this.getDataset();
var custom = point.custom || {};
if (custom.backgroundColor) {
backgroundColor = custom.backgroundColor;
} else if (dataset.pointBackgroundColor) {
backgroundColor = helpers.getValueAtIndexOrDefault(dataset.pointBackgroundColor, index, backgroundColor);
} else if (dataset.backgroundColor) {
backgroundColor = dataset.backgroundColor;
}
return backgroundColor;
},
getPointBorderColor: function(point, index) {
var borderColor = this.chart.options.elements.point.borderColor;
var dataset = this.getDataset();
var custom = point.custom || {};
if (custom.borderColor) {
borderColor = custom.borderColor;
} else if (dataset.pointBorderColor) {
borderColor = helpers.getValueAtIndexOrDefault(dataset.pointBorderColor, index, borderColor);
} else if (dataset.borderColor) {
borderColor = dataset.borderColor;
}
return borderColor;
},
getPointBorderWidth: function(point, index) {
var borderWidth = this.chart.options.elements.point.borderWidth;
var dataset = this.getDataset();
var custom = point.custom || {};
if (!isNaN(custom.borderWidth)) {
borderWidth = custom.borderWidth;
} else if (!isNaN(dataset.pointBorderWidth)) {
borderWidth = helpers.getValueAtIndexOrDefault(dataset.pointBorderWidth, index, borderWidth);
} else if (!isNaN(dataset.borderWidth)) {
borderWidth = dataset.borderWidth;
}
return borderWidth;
},
updateElement: function(point, index, reset) {
var me = this;
var meta = me.getMeta();
var custom = point.custom || {};
var dataset = me.getDataset();
var datasetIndex = me.index;
var value = dataset.data[index];
var yScale = me.getScaleForId(meta.yAxisID);
var xScale = me.getScaleForId(meta.xAxisID);
var pointOptions = me.chart.options.elements.point;
var x, y;
var labels = me.chart.data.labels || [];
var includeOffset = (labels.length === 1 || dataset.data.length === 1) || me.chart.isCombo;
// Compatibility: If the properties are defined with only the old name, use those values
if ((dataset.radius !== undefined) && (dataset.pointRadius === undefined)) {
dataset.pointRadius = dataset.radius;
}
if ((dataset.hitRadius !== undefined) && (dataset.pointHitRadius === undefined)) {
dataset.pointHitRadius = dataset.hitRadius;
}
x = xScale.getPixelForValue(typeof value === 'object' ? value : NaN, index, datasetIndex, includeOffset);
y = reset ? yScale.getBasePixel() : me.calculatePointY(value, index, datasetIndex);
// Utility
point._xScale = xScale;
point._yScale = yScale;
point._datasetIndex = datasetIndex;
point._index = index;
// Desired view properties
point._model = {
x: x,
y: y,
skip: custom.skip || isNaN(x) || isNaN(y),
// Appearance
radius: custom.radius || helpers.getValueAtIndexOrDefault(dataset.pointRadius, index, pointOptions.radius),
pointStyle: custom.pointStyle || helpers.getValueAtIndexOrDefault(dataset.pointStyle, index, pointOptions.pointStyle),
backgroundColor: me.getPointBackgroundColor(point, index),
borderColor: me.getPointBorderColor(point, index),
borderWidth: me.getPointBorderWidth(point, index),
tension: meta.dataset._model ? meta.dataset._model.tension : 0,
steppedLine: meta.dataset._model ? meta.dataset._model.steppedLine : false,
// Tooltip
hitRadius: custom.hitRadius || helpers.getValueAtIndexOrDefault(dataset.pointHitRadius, index, pointOptions.hitRadius)
};
},
calculatePointY: function(value, index, datasetIndex) {
var me = this;
var chart = me.chart;
var meta = me.getMeta();
var yScale = me.getScaleForId(meta.yAxisID);
var sumPos = 0;
var sumNeg = 0;
var i, ds, dsMeta;
if (yScale.options.stacked) {
for (i = 0; i < datasetIndex; i++) {
ds = chart.data.datasets[i];
dsMeta = chart.getDatasetMeta(i);
if (dsMeta.type === 'line' && dsMeta.yAxisID === yScale.id && chart.isDatasetVisible(i)) {
var stackedRightValue = Number(yScale.getRightValue(ds.data[index]));
if (stackedRightValue < 0) {
sumNeg += stackedRightValue || 0;
} else {
sumPos += stackedRightValue || 0;
}
}
}
var rightValue = Number(yScale.getRightValue(value));
if (rightValue < 0) {
return yScale.getPixelForValue(sumNeg + rightValue);
}
return yScale.getPixelForValue(sumPos + rightValue);
}
return yScale.getPixelForValue(value);
},
updateBezierControlPoints: function() {
var me = this;
var meta = me.getMeta();
var area = me.chart.chartArea;
var points = (meta.data || []);
var i, ilen, point, model, controlPoints;
// Only consider points that are drawn in case the spanGaps option is used
if (meta.dataset._model.spanGaps) {
points = points.filter(function(pt) {
return !pt._model.skip;
});
}
function capControlPoint(pt, min, max) {
return Math.max(Math.min(pt, max), min);
}
if (meta.dataset._model.cubicInterpolationMode === 'monotone') {
helpers.splineCurveMonotone(points);
} else {
for (i = 0, ilen = points.length; i < ilen; ++i) {
point = points[i];
model = point._model;
controlPoints = helpers.splineCurve(
helpers.previousItem(points, i)._model,
model,
helpers.nextItem(points, i)._model,
meta.dataset._model.tension
);
model.controlPointPreviousX = controlPoints.previous.x;
model.controlPointPreviousY = controlPoints.previous.y;
model.controlPointNextX = controlPoints.next.x;
model.controlPointNextY = controlPoints.next.y;
}
}
if (me.chart.options.elements.line.capBezierPoints) {
for (i = 0, ilen = points.length; i < ilen; ++i) {
model = points[i]._model;
model.controlPointPreviousX = capControlPoint(model.controlPointPreviousX, area.left, area.right);
model.controlPointPreviousY = capControlPoint(model.controlPointPreviousY, area.top, area.bottom);
model.controlPointNextX = capControlPoint(model.controlPointNextX, area.left, area.right);
model.controlPointNextY = capControlPoint(model.controlPointNextY, area.top, area.bottom);
}
}
},
draw: function(ease) {
var me = this;
var meta = me.getMeta();
var points = meta.data || [];
var easingDecimal = ease || 1;
var i, ilen;
// Transition Point Locations
for (i=0, ilen=points.length; i<ilen; ++i) {
points[i].transition(easingDecimal);
}
Chart.canvasHelpers.clipArea(me.chart.chart.ctx, me.chart.chartArea);
// Transition and Draw the line
if (lineEnabled(me.getDataset(), me.chart.options)) {
meta.dataset.transition(easingDecimal).draw();
}
Chart.canvasHelpers.unclipArea(me.chart.chart.ctx);
// Draw the points
for (i=0, ilen=points.length; i<ilen; ++i) {
points[i].draw(me.chart.chartArea);
}
},
setHoverStyle: function(point) {
// Point
var dataset = this.chart.data.datasets[point._datasetIndex];
var index = point._index;
var custom = point.custom || {};
var model = point._model;
model.radius = custom.hoverRadius || helpers.getValueAtIndexOrDefault(dataset.pointHoverRadius, index, this.chart.options.elements.point.hoverRadius);
model.backgroundColor = custom.hoverBackgroundColor || helpers.getValueAtIndexOrDefault(dataset.pointHoverBackgroundColor, index, helpers.getHoverColor(model.backgroundColor));
model.borderColor = custom.hoverBorderColor || helpers.getValueAtIndexOrDefault(dataset.pointHoverBorderColor, index, helpers.getHoverColor(model.borderColor));
model.borderWidth = custom.hoverBorderWidth || helpers.getValueAtIndexOrDefault(dataset.pointHoverBorderWidth, index, model.borderWidth);
},
removeHoverStyle: function(point) {
var me = this;
var dataset = me.chart.data.datasets[point._datasetIndex];
var index = point._index;
var custom = point.custom || {};
var model = point._model;
// Compatibility: If the properties are defined with only the old name, use those values
if ((dataset.radius !== undefined) && (dataset.pointRadius === undefined)) {
dataset.pointRadius = dataset.radius;
}
model.radius = custom.radius || helpers.getValueAtIndexOrDefault(dataset.pointRadius, index, me.chart.options.elements.point.radius);
model.backgroundColor = me.getPointBackgroundColor(point, index);
model.borderColor = me.getPointBorderColor(point, index);
model.borderWidth = me.getPointBorderWidth(point, index);
}
});
};
},{}],19:[function(require,module,exports){
'use strict';
module.exports = function(Chart) {
var helpers = Chart.helpers;
Chart.defaults.polarArea = {
scale: {
type: 'radialLinear',
lineArc: true, // so that lines are circular
ticks: {
beginAtZero: true
}
},
// Boolean - Whether to animate the rotation of the chart
animation: {
animateRotate: true,
animateScale: true
},
startAngle: -0.5 * Math.PI,
aspectRatio: 1,
legendCallback: function(chart) {
var text = [];
text.push('<ul class="' + chart.id + '-legend">');
var data = chart.data;
var datasets = data.datasets;
var labels = data.labels;
if (datasets.length) {
for (var i = 0; i < datasets[0].data.length; ++i) {
text.push('<li><span style="background-color:' + datasets[0].backgroundColor[i] + '"></span>');
if (labels[i]) {
text.push(labels[i]);
}
text.push('</li>');
}
}
text.push('</ul>');
return text.join('');
},
legend: {
labels: {
generateLabels: function(chart) {
var data = chart.data;
if (data.labels.length && data.datasets.length) {
return data.labels.map(function(label, i) {
var meta = chart.getDatasetMeta(0);
var ds = data.datasets[0];
var arc = meta.data[i];
var custom = arc.custom || {};
var getValueAtIndexOrDefault = helpers.getValueAtIndexOrDefault;
var arcOpts = chart.options.elements.arc;
var fill = custom.backgroundColor ? custom.backgroundColor : getValueAtIndexOrDefault(ds.backgroundColor, i, arcOpts.backgroundColor);
var stroke = custom.borderColor ? custom.borderColor : getValueAtIndexOrDefault(ds.borderColor, i, arcOpts.borderColor);
var bw = custom.borderWidth ? custom.borderWidth : getValueAtIndexOrDefault(ds.borderWidth, i, arcOpts.borderWidth);
return {
text: label,
fillStyle: fill,
strokeStyle: stroke,
lineWidth: bw,
hidden: isNaN(ds.data[i]) || meta.data[i].hidden,
// Extra data used for toggling the correct item
index: i
};
});
}
return [];
}
},
onClick: function(e, legendItem) {
var index = legendItem.index;
var chart = this.chart;
var i, ilen, meta;
for (i = 0, ilen = (chart.data.datasets || []).length; i < ilen; ++i) {
meta = chart.getDatasetMeta(i);
meta.data[index].hidden = !meta.data[index].hidden;
}
chart.update();
}
},
// Need to override these to give a nice default
tooltips: {
callbacks: {
title: function() {
return '';
},
label: function(tooltipItem, data) {
return data.labels[tooltipItem.index] + ': ' + tooltipItem.yLabel;
}
}
}
};
Chart.controllers.polarArea = Chart.DatasetController.extend({
dataElementType: Chart.elements.Arc,
linkScales: helpers.noop,
update: function(reset) {
var me = this;
var chart = me.chart;
var chartArea = chart.chartArea;
var meta = me.getMeta();
var opts = chart.options;
var arcOpts = opts.elements.arc;
var minSize = Math.min(chartArea.right - chartArea.left, chartArea.bottom - chartArea.top);
chart.outerRadius = Math.max((minSize - arcOpts.borderWidth / 2) / 2, 0);
chart.innerRadius = Math.max(opts.cutoutPercentage ? (chart.outerRadius / 100) * (opts.cutoutPercentage) : 1, 0);
chart.radiusLength = (chart.outerRadius - chart.innerRadius) / chart.getVisibleDatasetCount();
me.outerRadius = chart.outerRadius - (chart.radiusLength * me.index);
me.innerRadius = me.outerRadius - chart.radiusLength;
meta.count = me.countVisibleElements();
helpers.each(meta.data, function(arc, index) {
me.updateElement(arc, index, reset);
});
},
updateElement: function(arc, index, reset) {
var me = this;
var chart = me.chart;
var dataset = me.getDataset();
var opts = chart.options;
var animationOpts = opts.animation;
var scale = chart.scale;
var getValueAtIndexOrDefault = helpers.getValueAtIndexOrDefault;
var labels = chart.data.labels;
var circumference = me.calculateCircumference(dataset.data[index]);
var centerX = scale.xCenter;
var centerY = scale.yCenter;
// If there is NaN data before us, we need to calculate the starting angle correctly.
// We could be way more efficient here, but its unlikely that the polar area chart will have a lot of data
var visibleCount = 0;
var meta = me.getMeta();
for (var i = 0; i < index; ++i) {
if (!isNaN(dataset.data[i]) && !meta.data[i].hidden) {
++visibleCount;
}
}
// var negHalfPI = -0.5 * Math.PI;
var datasetStartAngle = opts.startAngle;
var distance = arc.hidden ? 0 : scale.getDistanceFromCenterForValue(dataset.data[index]);
var startAngle = datasetStartAngle + (circumference * visibleCount);
var endAngle = startAngle + (arc.hidden ? 0 : circumference);
var resetRadius = animationOpts.animateScale ? 0 : scale.getDistanceFromCenterForValue(dataset.data[index]);
helpers.extend(arc, {
// Utility
_datasetIndex: me.index,
_index: index,
_scale: scale,
// Desired view properties
_model: {
x: centerX,
y: centerY,
innerRadius: 0,
outerRadius: reset ? resetRadius : distance,
startAngle: reset && animationOpts.animateRotate ? datasetStartAngle : startAngle,
endAngle: reset && animationOpts.animateRotate ? datasetStartAngle : endAngle,
label: getValueAtIndexOrDefault(labels, index, labels[index])
}
});
// Apply border and fill style
me.removeHoverStyle(arc);
arc.pivot();
},
removeHoverStyle: function(arc) {
Chart.DatasetController.prototype.removeHoverStyle.call(this, arc, this.chart.options.elements.arc);
},
countVisibleElements: function() {
var dataset = this.getDataset();
var meta = this.getMeta();
var count = 0;
helpers.each(meta.data, function(element, index) {
if (!isNaN(dataset.data[index]) && !element.hidden) {
count++;
}
});
return count;
},
calculateCircumference: function(value) {
var count = this.getMeta().count;
if (count > 0 && !isNaN(value)) {
return (2 * Math.PI) / count;
}
return 0;
}
});
};
},{}],20:[function(require,module,exports){
'use strict';
module.exports = function(Chart) {
var helpers = Chart.helpers;
Chart.defaults.radar = {
aspectRatio: 1,
scale: {
type: 'radialLinear'
},
elements: {
line: {
tension: 0 // no bezier in radar
}
}
};
Chart.controllers.radar = Chart.DatasetController.extend({
datasetElementType: Chart.elements.Line,
dataElementType: Chart.elements.Point,
linkScales: helpers.noop,
update: function(reset) {
var me = this;
var meta = me.getMeta();
var line = meta.dataset;
var points = meta.data;
var custom = line.custom || {};
var dataset = me.getDataset();
var lineElementOptions = me.chart.options.elements.line;
var scale = me.chart.scale;
// Compatibility: If the properties are defined with only the old name, use those values
if ((dataset.tension !== undefined) && (dataset.lineTension === undefined)) {
dataset.lineTension = dataset.tension;
}
helpers.extend(meta.dataset, {
// Utility
_datasetIndex: me.index,
// Data
_children: points,
_loop: true,
// Model
_model: {
// Appearance
tension: custom.tension ? custom.tension : helpers.getValueOrDefault(dataset.lineTension, lineElementOptions.tension),
backgroundColor: custom.backgroundColor ? custom.backgroundColor : (dataset.backgroundColor || lineElementOptions.backgroundColor),
borderWidth: custom.borderWidth ? custom.borderWidth : (dataset.borderWidth || lineElementOptions.borderWidth),
borderColor: custom.borderColor ? custom.borderColor : (dataset.borderColor || lineElementOptions.borderColor),
fill: custom.fill ? custom.fill : (dataset.fill !== undefined ? dataset.fill : lineElementOptions.fill),
borderCapStyle: custom.borderCapStyle ? custom.borderCapStyle : (dataset.borderCapStyle || lineElementOptions.borderCapStyle),
borderDash: custom.borderDash ? custom.borderDash : (dataset.borderDash || lineElementOptions.borderDash),
borderDashOffset: custom.borderDashOffset ? custom.borderDashOffset : (dataset.borderDashOffset || lineElementOptions.borderDashOffset),
borderJoinStyle: custom.borderJoinStyle ? custom.borderJoinStyle : (dataset.borderJoinStyle || lineElementOptions.borderJoinStyle),
// Scale
scaleTop: scale.top,
scaleBottom: scale.bottom,
scaleZero: scale.getBasePosition()
}
});
meta.dataset.pivot();
// Update Points
helpers.each(points, function(point, index) {
me.updateElement(point, index, reset);
}, me);
// Update bezier control points
me.updateBezierControlPoints();
},
updateElement: function(point, index, reset) {
var me = this;
var custom = point.custom || {};
var dataset = me.getDataset();
var scale = me.chart.scale;
var pointElementOptions = me.chart.options.elements.point;
var pointPosition = scale.getPointPositionForValue(index, dataset.data[index]);
helpers.extend(point, {
// Utility
_datasetIndex: me.index,
_index: index,
_scale: scale,
// Desired view properties
_model: {
x: reset ? scale.xCenter : pointPosition.x, // value not used in dataset scale, but we want a consistent API between scales
y: reset ? scale.yCenter : pointPosition.y,
// Appearance
tension: custom.tension ? custom.tension : helpers.getValueOrDefault(dataset.lineTension, me.chart.options.elements.line.tension),
radius: custom.radius ? custom.radius : helpers.getValueAtIndexOrDefault(dataset.pointRadius, index, pointElementOptions.radius),
backgroundColor: custom.backgroundColor ? custom.backgroundColor : helpers.getValueAtIndexOrDefault(dataset.pointBackgroundColor, index, pointElementOptions.backgroundColor),
borderColor: custom.borderColor ? custom.borderColor : helpers.getValueAtIndexOrDefault(dataset.pointBorderColor, index, pointElementOptions.borderColor),
borderWidth: custom.borderWidth ? custom.borderWidth : helpers.getValueAtIndexOrDefault(dataset.pointBorderWidth, index, pointElementOptions.borderWidth),
pointStyle: custom.pointStyle ? custom.pointStyle : helpers.getValueAtIndexOrDefault(dataset.pointStyle, index, pointElementOptions.pointStyle),
// Tooltip
hitRadius: custom.hitRadius ? custom.hitRadius : helpers.getValueAtIndexOrDefault(dataset.hitRadius, index, pointElementOptions.hitRadius)
}
});
point._model.skip = custom.skip ? custom.skip : (isNaN(point._model.x) || isNaN(point._model.y));
},
updateBezierControlPoints: function() {
var chartArea = this.chart.chartArea;
var meta = this.getMeta();
helpers.each(meta.data, function(point, index) {
var model = point._model;
var controlPoints = helpers.splineCurve(
helpers.previousItem(meta.data, index, true)._model,
model,
helpers.nextItem(meta.data, index, true)._model,
model.tension
);
// Prevent the bezier going outside of the bounds of the graph
model.controlPointPreviousX = Math.max(Math.min(controlPoints.previous.x, chartArea.right), chartArea.left);
model.controlPointPreviousY = Math.max(Math.min(controlPoints.previous.y, chartArea.bottom), chartArea.top);
model.controlPointNextX = Math.max(Math.min(controlPoints.next.x, chartArea.right), chartArea.left);
model.controlPointNextY = Math.max(Math.min(controlPoints.next.y, chartArea.bottom), chartArea.top);
// Now pivot the point for animation
point.pivot();
});
},
draw: function(ease) {
var meta = this.getMeta();
var easingDecimal = ease || 1;
// Transition Point Locations
helpers.each(meta.data, function(point) {
point.transition(easingDecimal);
});
// Transition and Draw the line
meta.dataset.transition(easingDecimal).draw();
// Draw the points
helpers.each(meta.data, function(point) {
point.draw();
});
},
setHoverStyle: function(point) {
// Point
var dataset = this.chart.data.datasets[point._datasetIndex];
var custom = point.custom || {};
var index = point._index;
var model = point._model;
model.radius = custom.hoverRadius ? custom.hoverRadius : helpers.getValueAtIndexOrDefault(dataset.pointHoverRadius, index, this.chart.options.elements.point.hoverRadius);
model.backgroundColor = custom.hoverBackgroundColor ? custom.hoverBackgroundColor : helpers.getValueAtIndexOrDefault(dataset.pointHoverBackgroundColor, index, helpers.getHoverColor(model.backgroundColor));
model.borderColor = custom.hoverBorderColor ? custom.hoverBorderColor : helpers.getValueAtIndexOrDefault(dataset.pointHoverBorderColor, index, helpers.getHoverColor(model.borderColor));
model.borderWidth = custom.hoverBorderWidth ? custom.hoverBorderWidth : helpers.getValueAtIndexOrDefault(dataset.pointHoverBorderWidth, index, model.borderWidth);
},
removeHoverStyle: function(point) {
var dataset = this.chart.data.datasets[point._datasetIndex];
var custom = point.custom || {};
var index = point._index;
var model = point._model;
var pointElementOptions = this.chart.options.elements.point;
model.radius = custom.radius ? custom.radius : helpers.getValueAtIndexOrDefault(dataset.radius, index, pointElementOptions.radius);
model.backgroundColor = custom.backgroundColor ? custom.backgroundColor : helpers.getValueAtIndexOrDefault(dataset.pointBackgroundColor, index, pointElementOptions.backgroundColor);
model.borderColor = custom.borderColor ? custom.borderColor : helpers.getValueAtIndexOrDefault(dataset.pointBorderColor, index, pointElementOptions.borderColor);
model.borderWidth = custom.borderWidth ? custom.borderWidth : helpers.getValueAtIndexOrDefault(dataset.pointBorderWidth, index, pointElementOptions.borderWidth);
}
});
};
},{}],21:[function(require,module,exports){
/* global window: false */
'use strict';
module.exports = function(Chart) {
var helpers = Chart.helpers;
Chart.defaults.global.animation = {
duration: 1000,
easing: 'easeOutQuart',
onProgress: helpers.noop,
onComplete: helpers.noop
};
Chart.Animation = Chart.Element.extend({
currentStep: null, // the current animation step
numSteps: 60, // default number of steps
easing: '', // the easing to use for this animation
render: null, // render function used by the animation service
onAnimationProgress: null, // user specified callback to fire on each step of the animation
onAnimationComplete: null // user specified callback to fire when the animation finishes
});
Chart.animationService = {
frameDuration: 17,
animations: [],
dropFrames: 0,
request: null,
/**
* @function Chart.animationService.addAnimation
* @param chartInstance {ChartController} the chart to animate
* @param animationObject {IAnimation} the animation that we will animate
* @param duration {Number} length of animation in ms
* @param lazy {Boolean} if true, the chart is not marked as animating to enable more responsive interactions
*/
addAnimation: function(chartInstance, animationObject, duration, lazy) {
var me = this;
if (!lazy) {
chartInstance.animating = true;
}
for (var index = 0; index < me.animations.length; ++index) {
if (me.animations[index].chartInstance === chartInstance) {
// replacing an in progress animation
me.animations[index].animationObject = animationObject;
return;
}
}
me.animations.push({
chartInstance: chartInstance,
animationObject: animationObject
});
// If there are no animations queued, manually kickstart a digest, for lack of a better word
if (me.animations.length === 1) {
me.requestAnimationFrame();
}
},
// Cancel the animation for a given chart instance
cancelAnimation: function(chartInstance) {
var index = helpers.findIndex(this.animations, function(animationWrapper) {
return animationWrapper.chartInstance === chartInstance;
});
if (index !== -1) {
this.animations.splice(index, 1);
chartInstance.animating = false;
}
},
requestAnimationFrame: function() {
var me = this;
if (me.request === null) {
// Skip animation frame requests until the active one is executed.
// This can happen when processing mouse events, e.g. 'mousemove'
// and 'mouseout' events will trigger multiple renders.
me.request = helpers.requestAnimFrame.call(window, function() {
me.request = null;
me.startDigest();
});
}
},
startDigest: function() {
var me = this;
var startTime = Date.now();
var framesToDrop = 0;
if (me.dropFrames > 1) {
framesToDrop = Math.floor(me.dropFrames);
me.dropFrames = me.dropFrames % 1;
}
var i = 0;
while (i < me.animations.length) {
if (me.animations[i].animationObject.currentStep === null) {
me.animations[i].animationObject.currentStep = 0;
}
me.animations[i].animationObject.currentStep += 1 + framesToDrop;
if (me.animations[i].animationObject.currentStep > me.animations[i].animationObject.numSteps) {
me.animations[i].animationObject.currentStep = me.animations[i].animationObject.numSteps;
}
me.animations[i].animationObject.render(me.animations[i].chartInstance, me.animations[i].animationObject);
if (me.animations[i].animationObject.onAnimationProgress && me.animations[i].animationObject.onAnimationProgress.call) {
me.animations[i].animationObject.onAnimationProgress.call(me.animations[i].chartInstance, me.animations[i]);
}
if (me.animations[i].animationObject.currentStep === me.animations[i].animationObject.numSteps) {
if (me.animations[i].animationObject.onAnimationComplete && me.animations[i].animationObject.onAnimationComplete.call) {
me.animations[i].animationObject.onAnimationComplete.call(me.animations[i].chartInstance, me.animations[i]);
}
// executed the last frame. Remove the animation.
me.animations[i].chartInstance.animating = false;
me.animations.splice(i, 1);
} else {
++i;
}
}
var endTime = Date.now();
var dropFrames = (endTime - startTime) / me.frameDuration;
me.dropFrames += dropFrames;
// Do we have more stuff to animate?
if (me.animations.length > 0) {
me.requestAnimationFrame();
}
}
};
};
},{}],22:[function(require,module,exports){
'use strict';
module.exports = function(Chart) {
// Global Chart canvas helpers object for drawing items to canvas
var helpers = Chart.canvasHelpers = {};
helpers.drawPoint = function(ctx, pointStyle, radius, x, y) {
var type, edgeLength, xOffset, yOffset, height, size;
if (typeof pointStyle === 'object') {
type = pointStyle.toString();
if (type === '[object HTMLImageElement]' || type === '[object HTMLCanvasElement]') {
ctx.drawImage(pointStyle, x - pointStyle.width / 2, y - pointStyle.height / 2);
return;
}
}
if (isNaN(radius) || radius <= 0) {
return;
}
switch (pointStyle) {
// Default includes circle
default:
ctx.beginPath();
ctx.arc(x, y, radius, 0, Math.PI * 2);
ctx.closePath();
ctx.fill();
break;
case 'triangle':
ctx.beginPath();
edgeLength = 3 * radius / Math.sqrt(3);
height = edgeLength * Math.sqrt(3) / 2;
ctx.moveTo(x - edgeLength / 2, y + height / 3);
ctx.lineTo(x + edgeLength / 2, y + height / 3);
ctx.lineTo(x, y - 2 * height / 3);
ctx.closePath();
ctx.fill();
break;
case 'rect':
size = 1 / Math.SQRT2 * radius;
ctx.beginPath();
ctx.fillRect(x - size, y - size, 2 * size, 2 * size);
ctx.strokeRect(x - size, y - size, 2 * size, 2 * size);
break;
case 'rectRounded':
var offset = radius / Math.SQRT2;
var leftX = x - offset;
var topY = y - offset;
var sideSize = Math.SQRT2 * radius;
Chart.helpers.drawRoundedRectangle(ctx, leftX, topY, sideSize, sideSize, radius / 2);
ctx.fill();
break;
case 'rectRot':
size = 1 / Math.SQRT2 * radius;
ctx.beginPath();
ctx.moveTo(x - size, y);
ctx.lineTo(x, y + size);
ctx.lineTo(x + size, y);
ctx.lineTo(x, y - size);
ctx.closePath();
ctx.fill();
break;
case 'cross':
ctx.beginPath();
ctx.moveTo(x, y + radius);
ctx.lineTo(x, y - radius);
ctx.moveTo(x - radius, y);
ctx.lineTo(x + radius, y);
ctx.closePath();
break;
case 'crossRot':
ctx.beginPath();
xOffset = Math.cos(Math.PI / 4) * radius;
yOffset = Math.sin(Math.PI / 4) * radius;
ctx.moveTo(x - xOffset, y - yOffset);
ctx.lineTo(x + xOffset, y + yOffset);
ctx.moveTo(x - xOffset, y + yOffset);
ctx.lineTo(x + xOffset, y - yOffset);
ctx.closePath();
break;
case 'star':
ctx.beginPath();
ctx.moveTo(x, y + radius);
ctx.lineTo(x, y - radius);
ctx.moveTo(x - radius, y);
ctx.lineTo(x + radius, y);
xOffset = Math.cos(Math.PI / 4) * radius;
yOffset = Math.sin(Math.PI / 4) * radius;
ctx.moveTo(x - xOffset, y - yOffset);
ctx.lineTo(x + xOffset, y + yOffset);
ctx.moveTo(x - xOffset, y + yOffset);
ctx.lineTo(x + xOffset, y - yOffset);
ctx.closePath();
break;
case 'line':
ctx.beginPath();
ctx.moveTo(x - radius, y);
ctx.lineTo(x + radius, y);
ctx.closePath();
break;
case 'dash':
ctx.beginPath();
ctx.moveTo(x, y);
ctx.lineTo(x + radius, y);
ctx.closePath();
break;
}
ctx.stroke();
};
helpers.clipArea = function(ctx, clipArea) {
ctx.save();
ctx.beginPath();
ctx.rect(clipArea.left, clipArea.top, clipArea.right - clipArea.left, clipArea.bottom - clipArea.top);
ctx.clip();
};
helpers.unclipArea = function(ctx) {
ctx.restore();
};
};
},{}],23:[function(require,module,exports){
'use strict';
module.exports = function(Chart) {
var helpers = Chart.helpers;
var plugins = Chart.plugins;
var platform = Chart.platform;
// Create a dictionary of chart types, to allow for extension of existing types
Chart.types = {};
// Store a reference to each instance - allowing us to globally resize chart instances on window resize.
// Destroy method on the chart will remove the instance of the chart from this reference.
Chart.instances = {};
// Controllers available for dataset visualization eg. bar, line, slice, etc.
Chart.controllers = {};
/**
* Initializes the given config with global and chart default values.
*/
function initConfig(config) {
config = config || {};
// Do NOT use configMerge() for the data object because this method merges arrays
// and so would change references to labels and datasets, preventing data updates.
var data = config.data = config.data || {};
data.datasets = data.datasets || [];
data.labels = data.labels || [];
config.options = helpers.configMerge(
Chart.defaults.global,
Chart.defaults[config.type],
config.options || {});
return config;
}
/**
* Updates the config of the chart
* @param chart {Chart.Controller} chart to update the options for
*/
function updateConfig(chart) {
var newOptions = chart.options;
// Update Scale(s) with options
if (newOptions.scale) {
chart.scale.options = newOptions.scale;
} else if (newOptions.scales) {
newOptions.scales.xAxes.concat(newOptions.scales.yAxes).forEach(function(scaleOptions) {
chart.scales[scaleOptions.id].options = scaleOptions;
});
}
// Tooltip
chart.tooltip._options = newOptions.tooltips;
}
/**
* @class Chart.Controller
* The main controller of a chart.
*/
Chart.Controller = function(item, config, instance) {
var me = this;
config = initConfig(config);
var context = platform.acquireContext(item, config);
var canvas = context && context.canvas;
var height = canvas && canvas.height;
var width = canvas && canvas.width;
instance.ctx = context;
instance.canvas = canvas;
instance.config = config;
instance.width = width;
instance.height = height;
instance.aspectRatio = height? width / height : null;
me.id = helpers.uid();
me.chart = instance;
me.config = config;
me.options = config.options;
me._bufferedRender = false;
// Add the chart instance to the global namespace
Chart.instances[me.id] = me;
Object.defineProperty(me, 'data', {
get: function() {
return me.config.data;
}
});
if (!context || !canvas) {
// The given item is not a compatible context2d element, let's return before finalizing
// the chart initialization but after setting basic chart / controller properties that
// can help to figure out that the chart is not valid (e.g chart.canvas !== null);
// https://github.com/chartjs/Chart.js/issues/2807
console.error("Failed to create chart: can't acquire context from the given item");
return me;
}
me.initialize();
me.update();
return me;
};
helpers.extend(Chart.Controller.prototype, /** @lends Chart.Controller.prototype */ {
initialize: function() {
var me = this;
// Before init plugin notification
plugins.notify(me, 'beforeInit');
helpers.retinaScale(me.chart);
me.bindEvents();
if (me.options.responsive) {
// Initial resize before chart draws (must be silent to preserve initial animations).
me.resize(true);
}
// Make sure scales have IDs and are built before we build any controllers.
me.ensureScalesHaveIDs();
me.buildScales();
me.initToolTip();
// After init plugin notification
plugins.notify(me, 'afterInit');
return me;
},
clear: function() {
helpers.clear(this.chart);
return this;
},
stop: function() {
// Stops any current animation loop occurring
Chart.animationService.cancelAnimation(this);
return this;
},
resize: function(silent) {
var me = this;
var chart = me.chart;
var options = me.options;
var canvas = chart.canvas;
var aspectRatio = (options.maintainAspectRatio && chart.aspectRatio) || null;
// the canvas render width and height will be casted to integers so make sure that
// the canvas display style uses the same integer values to avoid blurring effect.
var newWidth = Math.floor(helpers.getMaximumWidth(canvas));
var newHeight = Math.floor(aspectRatio? newWidth / aspectRatio : helpers.getMaximumHeight(canvas));
if (chart.width === newWidth && chart.height === newHeight) {
return;
}
canvas.width = chart.width = newWidth;
canvas.height = chart.height = newHeight;
canvas.style.width = newWidth + 'px';
canvas.style.height = newHeight + 'px';
helpers.retinaScale(chart);
if (!silent) {
// Notify any plugins about the resize
var newSize = {width: newWidth, height: newHeight};
plugins.notify(me, 'resize', [newSize]);
// Notify of resize
if (me.options.onResize) {
me.options.onResize(me, newSize);
}
me.stop();
me.update(me.options.responsiveAnimationDuration);
}
},
ensureScalesHaveIDs: function() {
var options = this.options;
var scalesOptions = options.scales || {};
var scaleOptions = options.scale;
helpers.each(scalesOptions.xAxes, function(xAxisOptions, index) {
xAxisOptions.id = xAxisOptions.id || ('x-axis-' + index);
});
helpers.each(scalesOptions.yAxes, function(yAxisOptions, index) {
yAxisOptions.id = yAxisOptions.id || ('y-axis-' + index);
});
if (scaleOptions) {
scaleOptions.id = scaleOptions.id || 'scale';
}
},
/**
* Builds a map of scale ID to scale object for future lookup.
*/
buildScales: function() {
var me = this;
var options = me.options;
var scales = me.scales = {};
var items = [];
if (options.scales) {
items = items.concat(
(options.scales.xAxes || []).map(function(xAxisOptions) {
return {options: xAxisOptions, dtype: 'category'};
}),
(options.scales.yAxes || []).map(function(yAxisOptions) {
return {options: yAxisOptions, dtype: 'linear'};
})
);
}
if (options.scale) {
items.push({options: options.scale, dtype: 'radialLinear', isDefault: true});
}
helpers.each(items, function(item) {
var scaleOptions = item.options;
var scaleType = helpers.getValueOrDefault(scaleOptions.type, item.dtype);
var scaleClass = Chart.scaleService.getScaleConstructor(scaleType);
if (!scaleClass) {
return;
}
var scale = new scaleClass({
id: scaleOptions.id,
options: scaleOptions,
ctx: me.chart.ctx,
chart: me
});
scales[scale.id] = scale;
// TODO(SB): I think we should be able to remove this custom case (options.scale)
// and consider it as a regular scale part of the "scales"" map only! This would
// make the logic easier and remove some useless? custom code.
if (item.isDefault) {
me.scale = scale;
}
});
Chart.scaleService.addScalesToLayout(this);
},
buildOrUpdateControllers: function() {
var me = this;
var types = [];
var newControllers = [];
helpers.each(me.data.datasets, function(dataset, datasetIndex) {
var meta = me.getDatasetMeta(datasetIndex);
if (!meta.type) {
meta.type = dataset.type || me.config.type;
}
types.push(meta.type);
if (meta.controller) {
meta.controller.updateIndex(datasetIndex);
} else {
meta.controller = new Chart.controllers[meta.type](me, datasetIndex);
newControllers.push(meta.controller);
}
}, me);
if (types.length > 1) {
for (var i = 1; i < types.length; i++) {
if (types[i] !== types[i - 1]) {
me.isCombo = true;
break;
}
}
}
return newControllers;
},
/**
* Reset the elements of all datasets
* @private
*/
resetElements: function() {
var me = this;
helpers.each(me.data.datasets, function(dataset, datasetIndex) {
me.getDatasetMeta(datasetIndex).controller.reset();
}, me);
},
/**
* Resets the chart back to it's state before the initial animation
*/
reset: function() {
this.resetElements();
this.tooltip.initialize();
},
update: function(animationDuration, lazy) {
var me = this;
updateConfig(me);
if (plugins.notify(me, 'beforeUpdate') === false) {
return;
}
// In case the entire data object changed
me.tooltip._data = me.data;
// Make sure dataset controllers are updated and new controllers are reset
var newControllers = me.buildOrUpdateControllers();
// Make sure all dataset controllers have correct meta data counts
helpers.each(me.data.datasets, function(dataset, datasetIndex) {
me.getDatasetMeta(datasetIndex).controller.buildOrUpdateElements();
}, me);
me.updateLayout();
// Can only reset the new controllers after the scales have been updated
helpers.each(newControllers, function(controller) {
controller.reset();
});
me.updateDatasets();
// Do this before render so that any plugins that need final scale updates can use it
plugins.notify(me, 'afterUpdate');
if (me._bufferedRender) {
me._bufferedRequest = {
lazy: lazy,
duration: animationDuration
};
} else {
me.render(animationDuration, lazy);
}
},
/**
* Updates the chart layout unless a plugin returns `false` to the `beforeLayout`
* hook, in which case, plugins will not be called on `afterLayout`.
* @private
*/
updateLayout: function() {
var me = this;
if (plugins.notify(me, 'beforeLayout') === false) {
return;
}
Chart.layoutService.update(this, this.chart.width, this.chart.height);
/**
* Provided for backward compatibility, use `afterLayout` instead.
* @method IPlugin#afterScaleUpdate
* @deprecated since version 2.5.0
* @todo remove at version 3
*/
plugins.notify(me, 'afterScaleUpdate');
plugins.notify(me, 'afterLayout');
},
/**
* Updates all datasets unless a plugin returns `false` to the `beforeDatasetsUpdate`
* hook, in which case, plugins will not be called on `afterDatasetsUpdate`.
* @private
*/
updateDatasets: function() {
var me = this;
if (plugins.notify(me, 'beforeDatasetsUpdate') === false) {
return;
}
for (var i = 0, ilen = me.data.datasets.length; i < ilen; ++i) {
me.getDatasetMeta(i).controller.update();
}
plugins.notify(me, 'afterDatasetsUpdate');
},
render: function(duration, lazy) {
var me = this;
if (plugins.notify(me, 'beforeRender') === false) {
return;
}
var animationOptions = me.options.animation;
var onComplete = function() {
plugins.notify(me, 'afterRender');
var callback = animationOptions && animationOptions.onComplete;
if (callback && callback.call) {
callback.call(me);
}
};
if (animationOptions && ((typeof duration !== 'undefined' && duration !== 0) || (typeof duration === 'undefined' && animationOptions.duration !== 0))) {
var animation = new Chart.Animation();
animation.numSteps = (duration || animationOptions.duration) / 16.66; // 60 fps
animation.easing = animationOptions.easing;
// render function
animation.render = function(chartInstance, animationObject) {
var easingFunction = helpers.easingEffects[animationObject.easing];
var stepDecimal = animationObject.currentStep / animationObject.numSteps;
var easeDecimal = easingFunction(stepDecimal);
chartInstance.draw(easeDecimal, stepDecimal, animationObject.currentStep);
};
// user events
animation.onAnimationProgress = animationOptions.onProgress;
animation.onAnimationComplete = onComplete;
Chart.animationService.addAnimation(me, animation, duration, lazy);
} else {
me.draw();
onComplete();
}
return me;
},
draw: function(easingValue) {
var me = this;
me.clear();
if (easingValue === undefined || easingValue === null) {
easingValue = 1;
}
if (plugins.notify(me, 'beforeDraw', [easingValue]) === false) {
return;
}
// Draw all the scales
helpers.each(me.boxes, function(box) {
box.draw(me.chartArea);
}, me);
if (me.scale) {
me.scale.draw();
}
me.drawDatasets(easingValue);
// Finally draw the tooltip
me.tooltip.transition(easingValue).draw();
plugins.notify(me, 'afterDraw', [easingValue]);
},
/**
* Draws all datasets unless a plugin returns `false` to the `beforeDatasetsDraw`
* hook, in which case, plugins will not be called on `afterDatasetsDraw`.
* @private
*/
drawDatasets: function(easingValue) {
var me = this;
if (plugins.notify(me, 'beforeDatasetsDraw', [easingValue]) === false) {
return;
}
// Draw each dataset via its respective controller (reversed to support proper line stacking)
helpers.each(me.data.datasets, function(dataset, datasetIndex) {
if (me.isDatasetVisible(datasetIndex)) {
me.getDatasetMeta(datasetIndex).controller.draw(easingValue);
}
}, me, true);
plugins.notify(me, 'afterDatasetsDraw', [easingValue]);
},
// Get the single element that was clicked on
// @return : An object containing the dataset index and element index of the matching element. Also contains the rectangle that was draw
getElementAtEvent: function(e) {
return Chart.Interaction.modes.single(this, e);
},
getElementsAtEvent: function(e) {
return Chart.Interaction.modes.label(this, e, {intersect: true});
},
getElementsAtXAxis: function(e) {
return Chart.Interaction.modes['x-axis'](this, e, {intersect: true});
},
getElementsAtEventForMode: function(e, mode, options) {
var method = Chart.Interaction.modes[mode];
if (typeof method === 'function') {
return method(this, e, options);
}
return [];
},
getDatasetAtEvent: function(e) {
return Chart.Interaction.modes.dataset(this, e, {intersect: true});
},
getDatasetMeta: function(datasetIndex) {
var me = this;
var dataset = me.data.datasets[datasetIndex];
if (!dataset._meta) {
dataset._meta = {};
}
var meta = dataset._meta[me.id];
if (!meta) {
meta = dataset._meta[me.id] = {
type: null,
data: [],
dataset: null,
controller: null,
hidden: null, // See isDatasetVisible() comment
xAxisID: null,
yAxisID: null
};
}
return meta;
},
getVisibleDatasetCount: function() {
var count = 0;
for (var i = 0, ilen = this.data.datasets.length; i<ilen; ++i) {
if (this.isDatasetVisible(i)) {
count++;
}
}
return count;
},
isDatasetVisible: function(datasetIndex) {
var meta = this.getDatasetMeta(datasetIndex);
// meta.hidden is a per chart dataset hidden flag override with 3 states: if true or false,
// the dataset.hidden value is ignored, else if null, the dataset hidden state is returned.
return typeof meta.hidden === 'boolean'? !meta.hidden : !this.data.datasets[datasetIndex].hidden;
},
generateLegend: function() {
return this.options.legendCallback(this);
},
destroy: function() {
var me = this;
var canvas = me.chart.canvas;
var meta, i, ilen;
me.stop();
// dataset controllers need to cleanup associated data
for (i = 0, ilen = me.data.datasets.length; i < ilen; ++i) {
meta = me.getDatasetMeta(i);
if (meta.controller) {
meta.controller.destroy();
meta.controller = null;
}
}
if (canvas) {
me.unbindEvents();
helpers.clear(me.chart);
platform.releaseContext(me.chart.ctx);
me.chart.canvas = null;
me.chart.ctx = null;
}
plugins.notify(me, 'destroy');
delete Chart.instances[me.id];
},
toBase64Image: function() {
return this.chart.canvas.toDataURL.apply(this.chart.canvas, arguments);
},
initToolTip: function() {
var me = this;
me.tooltip = new Chart.Tooltip({
_chart: me.chart,
_chartInstance: me,
_data: me.data,
_options: me.options.tooltips
}, me);
me.tooltip.initialize();
},
/**
* @private
*/
bindEvents: function() {
var me = this;
var listeners = me._listeners = {};
var listener = function() {
me.eventHandler.apply(me, arguments);
};
helpers.each(me.options.events, function(type) {
platform.addEventListener(me, type, listener);
listeners[type] = listener;
});
// Responsiveness is currently based on the use of an iframe, however this method causes
// performance issues and could be troublesome when used with ad blockers. So make sure
// that the user is still able to create a chart without iframe when responsive is false.
// See https://github.com/chartjs/Chart.js/issues/2210
if (me.options.responsive) {
listener = function() {
me.resize();
};
platform.addEventListener(me, 'resize', listener);
listeners.resize = listener;
}
},
/**
* @private
*/
unbindEvents: function() {
var me = this;
var listeners = me._listeners;
if (!listeners) {
return;
}
delete me._listeners;
helpers.each(listeners, function(listener, type) {
platform.removeEventListener(me, type, listener);
});
},
updateHoverStyle: function(elements, mode, enabled) {
var method = enabled? 'setHoverStyle' : 'removeHoverStyle';
var element, i, ilen;
for (i=0, ilen=elements.length; i<ilen; ++i) {
element = elements[i];
if (element) {
this.getDatasetMeta(element._datasetIndex).controller[method](element);
}
}
},
/**
* @private
*/
eventHandler: function(e) {
var me = this;
var tooltip = me.tooltip;
if (plugins.notify(me, 'beforeEvent', [e]) === false) {
return;
}
// Buffer any update calls so that renders do not occur
me._bufferedRender = true;
me._bufferedRequest = null;
var changed = me.handleEvent(e);
changed |= tooltip && tooltip.handleEvent(e);
plugins.notify(me, 'afterEvent', [e]);
var bufferedRequest = me._bufferedRequest;
if (bufferedRequest) {
// If we have an update that was triggered, we need to do a normal render
me.render(bufferedRequest.duration, bufferedRequest.lazy);
} else if (changed && !me.animating) {
// If entering, leaving, or changing elements, animate the change via pivot
me.stop();
// We only need to render at this point. Updating will cause scales to be
// recomputed generating flicker & using more memory than necessary.
me.render(me.options.hover.animationDuration, true);
}
me._bufferedRender = false;
me._bufferedRequest = null;
return me;
},
/**
* Handle an event
* @private
* @param {IEvent} event the event to handle
* @return {Boolean} true if the chart needs to re-render
*/
handleEvent: function(e) {
var me = this;
var options = me.options || {};
var hoverOptions = options.hover;
var changed = false;
me.lastActive = me.lastActive || [];
// Find Active Elements for hover and tooltips
if (e.type === 'mouseout') {
me.active = [];
} else {
me.active = me.getElementsAtEventForMode(e, hoverOptions.mode, hoverOptions);
}
// On Hover hook
if (hoverOptions.onHover) {
// Need to call with native event here to not break backwards compatibility
hoverOptions.onHover.call(me, e.native, me.active);
}
if (e.type === 'mouseup' || e.type === 'click') {
if (options.onClick) {
// Use e.native here for backwards compatibility
options.onClick.call(me, e.native, me.active);
}
}
// Remove styling for last active (even if it may still be active)
if (me.lastActive.length) {
me.updateHoverStyle(me.lastActive, hoverOptions.mode, false);
}
// Built in hover styling
if (me.active.length && hoverOptions.mode) {
me.updateHoverStyle(me.active, hoverOptions.mode, true);
}
changed = !helpers.arrayEquals(me.active, me.lastActive);
// Remember Last Actives
me.lastActive = me.active;
return changed;
}
});
};
},{}],24:[function(require,module,exports){
'use strict';
module.exports = function(Chart) {
var helpers = Chart.helpers;
var arrayEvents = ['push', 'pop', 'shift', 'splice', 'unshift'];
/**
* Hooks the array methods that add or remove values ('push', pop', 'shift', 'splice',
* 'unshift') and notify the listener AFTER the array has been altered. Listeners are
* called on the 'onData*' callbacks (e.g. onDataPush, etc.) with same arguments.
*/
function listenArrayEvents(array, listener) {
if (array._chartjs) {
array._chartjs.listeners.push(listener);
return;
}
Object.defineProperty(array, '_chartjs', {
configurable: true,
enumerable: false,
value: {
listeners: [listener]
}
});
arrayEvents.forEach(function(key) {
var method = 'onData' + key.charAt(0).toUpperCase() + key.slice(1);
var base = array[key];
Object.defineProperty(array, key, {
configurable: true,
enumerable: false,
value: function() {
var args = Array.prototype.slice.call(arguments);
var res = base.apply(this, args);
helpers.each(array._chartjs.listeners, function(object) {
if (typeof object[method] === 'function') {
object[method].apply(object, args);
}
});
return res;
}
});
});
}
/**
* Removes the given array event listener and cleanup extra attached properties (such as
* the _chartjs stub and overridden methods) if array doesn't have any more listeners.
*/
function unlistenArrayEvents(array, listener) {
var stub = array._chartjs;
if (!stub) {
return;
}
var listeners = stub.listeners;
var index = listeners.indexOf(listener);
if (index !== -1) {
listeners.splice(index, 1);
}
if (listeners.length > 0) {
return;
}
arrayEvents.forEach(function(key) {
delete array[key];
});
delete array._chartjs;
}
// Base class for all dataset controllers (line, bar, etc)
Chart.DatasetController = function(chart, datasetIndex) {
this.initialize(chart, datasetIndex);
};
helpers.extend(Chart.DatasetController.prototype, {
/**
* Element type used to generate a meta dataset (e.g. Chart.element.Line).
* @type {Chart.core.element}
*/
datasetElementType: null,
/**
* Element type used to generate a meta data (e.g. Chart.element.Point).
* @type {Chart.core.element}
*/
dataElementType: null,
initialize: function(chart, datasetIndex) {
var me = this;
me.chart = chart;
me.index = datasetIndex;
me.linkScales();
me.addElements();
},
updateIndex: function(datasetIndex) {
this.index = datasetIndex;
},
linkScales: function() {
var me = this;
var meta = me.getMeta();
var dataset = me.getDataset();
if (meta.xAxisID === null) {
meta.xAxisID = dataset.xAxisID || me.chart.options.scales.xAxes[0].id;
}
if (meta.yAxisID === null) {
meta.yAxisID = dataset.yAxisID || me.chart.options.scales.yAxes[0].id;
}
},
getDataset: function() {
return this.chart.data.datasets[this.index];
},
getMeta: function() {
return this.chart.getDatasetMeta(this.index);
},
getScaleForId: function(scaleID) {
return this.chart.scales[scaleID];
},
reset: function() {
this.update(true);
},
/**
* @private
*/
destroy: function() {
if (this._data) {
unlistenArrayEvents(this._data, this);
}
},
createMetaDataset: function() {
var me = this;
var type = me.datasetElementType;
return type && new type({
_chart: me.chart.chart,
_datasetIndex: me.index
});
},
createMetaData: function(index) {
var me = this;
var type = me.dataElementType;
return type && new type({
_chart: me.chart.chart,
_datasetIndex: me.index,
_index: index
});
},
addElements: function() {
var me = this;
var meta = me.getMeta();
var data = me.getDataset().data || [];
var metaData = meta.data;
var i, ilen;
for (i=0, ilen=data.length; i<ilen; ++i) {
metaData[i] = metaData[i] || me.createMetaData(i);
}
meta.dataset = meta.dataset || me.createMetaDataset();
},
addElementAndReset: function(index) {
var element = this.createMetaData(index);
this.getMeta().data.splice(index, 0, element);
this.updateElement(element, index, true);
},
buildOrUpdateElements: function() {
var me = this;
var dataset = me.getDataset();
var data = dataset.data || (dataset.data = []);
// In order to correctly handle data addition/deletion animation (an thus simulate
// real-time charts), we need to monitor these data modifications and synchronize
// the internal meta data accordingly.
if (me._data !== data) {
if (me._data) {
// This case happens when the user replaced the data array instance.
unlistenArrayEvents(me._data, me);
}
listenArrayEvents(data, me);
me._data = data;
}
// Re-sync meta data in case the user replaced the data array or if we missed
// any updates and so make sure that we handle number of datapoints changing.
me.resyncElements();
},
update: helpers.noop,
draw: function(ease) {
var easingDecimal = ease || 1;
var i, len;
var metaData = this.getMeta().data;
for (i = 0, len = metaData.length; i < len; ++i) {
metaData[i].transition(easingDecimal).draw();
}
},
removeHoverStyle: function(element, elementOpts) {
var dataset = this.chart.data.datasets[element._datasetIndex],
index = element._index,
custom = element.custom || {},
valueOrDefault = helpers.getValueAtIndexOrDefault,
model = element._model;
model.backgroundColor = custom.backgroundColor ? custom.backgroundColor : valueOrDefault(dataset.backgroundColor, index, elementOpts.backgroundColor);
model.borderColor = custom.borderColor ? custom.borderColor : valueOrDefault(dataset.borderColor, index, elementOpts.borderColor);
model.borderWidth = custom.borderWidth ? custom.borderWidth : valueOrDefault(dataset.borderWidth, index, elementOpts.borderWidth);
},
setHoverStyle: function(element) {
var dataset = this.chart.data.datasets[element._datasetIndex],
index = element._index,
custom = element.custom || {},
valueOrDefault = helpers.getValueAtIndexOrDefault,
getHoverColor = helpers.getHoverColor,
model = element._model;
model.backgroundColor = custom.hoverBackgroundColor ? custom.hoverBackgroundColor : valueOrDefault(dataset.hoverBackgroundColor, index, getHoverColor(model.backgroundColor));
model.borderColor = custom.hoverBorderColor ? custom.hoverBorderColor : valueOrDefault(dataset.hoverBorderColor, index, getHoverColor(model.borderColor));
model.borderWidth = custom.hoverBorderWidth ? custom.hoverBorderWidth : valueOrDefault(dataset.hoverBorderWidth, index, model.borderWidth);
},
/**
* @private
*/
resyncElements: function() {
var me = this;
var meta = me.getMeta();
var data = me.getDataset().data;
var numMeta = meta.data.length;
var numData = data.length;
if (numData < numMeta) {
meta.data.splice(numData, numMeta - numData);
} else if (numData > numMeta) {
me.insertElements(numMeta, numData - numMeta);
}
},
/**
* @private
*/
insertElements: function(start, count) {
for (var i=0; i<count; ++i) {
this.addElementAndReset(start + i);
}
},
/**
* @private
*/
onDataPush: function() {
this.insertElements(this.getDataset().data.length-1, arguments.length);
},
/**
* @private
*/
onDataPop: function() {
this.getMeta().data.pop();
},
/**
* @private
*/
onDataShift: function() {
this.getMeta().data.shift();
},
/**
* @private
*/
onDataSplice: function(start, count) {
this.getMeta().data.splice(start, count);
this.insertElements(start, arguments.length - 2);
},
/**
* @private
*/
onDataUnshift: function() {
this.insertElements(0, arguments.length);
}
});
Chart.DatasetController.extend = helpers.inherits;
};
},{}],25:[function(require,module,exports){
'use strict';
module.exports = function(Chart) {
var helpers = Chart.helpers;
Chart.elements = {};
Chart.Element = function(configuration) {
helpers.extend(this, configuration);
this.initialize.apply(this, arguments);
};
helpers.extend(Chart.Element.prototype, {
initialize: function() {
this.hidden = false;
},
pivot: function() {
var me = this;
if (!me._view) {
me._view = helpers.clone(me._model);
}
me._start = helpers.clone(me._view);
return me;
},
transition: function(ease) {
var me = this;
if (!me._view) {
me._view = helpers.clone(me._model);
}
// No animation -> No Transition
if (ease === 1) {
me._view = me._model;
me._start = null;
return me;
}
if (!me._start) {
me.pivot();
}
helpers.each(me._model, function(value, key) {
if (key[0] === '_') {
// Only non-underscored properties
// Init if doesn't exist
} else if (!me._view.hasOwnProperty(key)) {
if (typeof value === 'number' && !isNaN(me._view[key])) {
me._view[key] = value * ease;
} else {
me._view[key] = value;
}
// No unnecessary computations
} else if (value === me._view[key]) {
// It's the same! Woohoo!
// Color transitions if possible
} else if (typeof value === 'string') {
try {
var color = helpers.color(me._model[key]).mix(helpers.color(me._start[key]), ease);
me._view[key] = color.rgbString();
} catch (err) {
me._view[key] = value;
}
// Number transitions
} else if (typeof value === 'number') {
var startVal = me._start[key] !== undefined && isNaN(me._start[key]) === false ? me._start[key] : 0;
me._view[key] = ((me._model[key] - startVal) * ease) + startVal;
// Everything else
} else {
me._view[key] = value;
}
}, me);
return me;
},
tooltipPosition: function() {
return {
x: this._model.x,
y: this._model.y
};
},
hasValue: function() {
return helpers.isNumber(this._model.x) && helpers.isNumber(this._model.y);
}
});
Chart.Element.extend = helpers.inherits;
};
},{}],26:[function(require,module,exports){
/* global window: false */
/* global document: false */
'use strict';
var color = require(3);
module.exports = function(Chart) {
// Global Chart helpers object for utility methods and classes
var helpers = Chart.helpers = {};
// -- Basic js utility methods
helpers.each = function(loopable, callback, self, reverse) {
// Check to see if null or undefined firstly.
var i, len;
if (helpers.isArray(loopable)) {
len = loopable.length;
if (reverse) {
for (i = len - 1; i >= 0; i--) {
callback.call(self, loopable[i], i);
}
} else {
for (i = 0; i < len; i++) {
callback.call(self, loopable[i], i);
}
}
} else if (typeof loopable === 'object') {
var keys = Object.keys(loopable);
len = keys.length;
for (i = 0; i < len; i++) {
callback.call(self, loopable[keys[i]], keys[i]);
}
}
};
helpers.clone = function(obj) {
var objClone = {};
helpers.each(obj, function(value, key) {
if (helpers.isArray(value)) {
objClone[key] = value.slice(0);
} else if (typeof value === 'object' && value !== null) {
objClone[key] = helpers.clone(value);
} else {
objClone[key] = value;
}
});
return objClone;
};
helpers.extend = function(base) {
var setFn = function(value, key) {
base[key] = value;
};
for (var i = 1, ilen = arguments.length; i < ilen; i++) {
helpers.each(arguments[i], setFn);
}
return base;
};
// Need a special merge function to chart configs since they are now grouped
helpers.configMerge = function(_base) {
var base = helpers.clone(_base);
helpers.each(Array.prototype.slice.call(arguments, 1), function(extension) {
helpers.each(extension, function(value, key) {
var baseHasProperty = base.hasOwnProperty(key);
var baseVal = baseHasProperty ? base[key] : {};
if (key === 'scales') {
// Scale config merging is complex. Add our own function here for that
base[key] = helpers.scaleMerge(baseVal, value);
} else if (key === 'scale') {
// Used in polar area & radar charts since there is only one scale
base[key] = helpers.configMerge(baseVal, Chart.scaleService.getScaleDefaults(value.type), value);
} else if (baseHasProperty
&& typeof baseVal === 'object'
&& !helpers.isArray(baseVal)
&& baseVal !== null
&& typeof value === 'object'
&& !helpers.isArray(value)) {
// If we are overwriting an object with an object, do a merge of the properties.
base[key] = helpers.configMerge(baseVal, value);
} else {
// can just overwrite the value in this case
base[key] = value;
}
});
});
return base;
};
helpers.scaleMerge = function(_base, extension) {
var base = helpers.clone(_base);
helpers.each(extension, function(value, key) {
if (key === 'xAxes' || key === 'yAxes') {
// These properties are arrays of items
if (base.hasOwnProperty(key)) {
helpers.each(value, function(valueObj, index) {
var axisType = helpers.getValueOrDefault(valueObj.type, key === 'xAxes' ? 'category' : 'linear');
var axisDefaults = Chart.scaleService.getScaleDefaults(axisType);
if (index >= base[key].length || !base[key][index].type) {
base[key].push(helpers.configMerge(axisDefaults, valueObj));
} else if (valueObj.type && valueObj.type !== base[key][index].type) {
// Type changed. Bring in the new defaults before we bring in valueObj so that valueObj can override the correct scale defaults
base[key][index] = helpers.configMerge(base[key][index], axisDefaults, valueObj);
} else {
// Type is the same
base[key][index] = helpers.configMerge(base[key][index], valueObj);
}
});
} else {
base[key] = [];
helpers.each(value, function(valueObj) {
var axisType = helpers.getValueOrDefault(valueObj.type, key === 'xAxes' ? 'category' : 'linear');
base[key].push(helpers.configMerge(Chart.scaleService.getScaleDefaults(axisType), valueObj));
});
}
} else if (base.hasOwnProperty(key) && typeof base[key] === 'object' && base[key] !== null && typeof value === 'object') {
// If we are overwriting an object with an object, do a merge of the properties.
base[key] = helpers.configMerge(base[key], value);
} else {
// can just overwrite the value in this case
base[key] = value;
}
});
return base;
};
helpers.getValueAtIndexOrDefault = function(value, index, defaultValue) {
if (value === undefined || value === null) {
return defaultValue;
}
if (helpers.isArray(value)) {
return index < value.length ? value[index] : defaultValue;
}
return value;
};
helpers.getValueOrDefault = function(value, defaultValue) {
return value === undefined ? defaultValue : value;
};
helpers.indexOf = Array.prototype.indexOf?
function(array, item) {
return array.indexOf(item);
}:
function(array, item) {
for (var i = 0, ilen = array.length; i < ilen; ++i) {
if (array[i] === item) {
return i;
}
}
return -1;
};
helpers.where = function(collection, filterCallback) {
if (helpers.isArray(collection) && Array.prototype.filter) {
return collection.filter(filterCallback);
}
var filtered = [];
helpers.each(collection, function(item) {
if (filterCallback(item)) {
filtered.push(item);
}
});
return filtered;
};
helpers.findIndex = Array.prototype.findIndex?
function(array, callback, scope) {
return array.findIndex(callback, scope);
} :
function(array, callback, scope) {
scope = scope === undefined? array : scope;
for (var i = 0, ilen = array.length; i < ilen; ++i) {
if (callback.call(scope, array[i], i, array)) {
return i;
}
}
return -1;
};
helpers.findNextWhere = function(arrayToSearch, filterCallback, startIndex) {
// Default to start of the array
if (startIndex === undefined || startIndex === null) {
startIndex = -1;
}
for (var i = startIndex + 1; i < arrayToSearch.length; i++) {
var currentItem = arrayToSearch[i];
if (filterCallback(currentItem)) {
return currentItem;
}
}
};
helpers.findPreviousWhere = function(arrayToSearch, filterCallback, startIndex) {
// Default to end of the array
if (startIndex === undefined || startIndex === null) {
startIndex = arrayToSearch.length;
}
for (var i = startIndex - 1; i >= 0; i--) {
var currentItem = arrayToSearch[i];
if (filterCallback(currentItem)) {
return currentItem;
}
}
};
helpers.inherits = function(extensions) {
// Basic javascript inheritance based on the model created in Backbone.js
var me = this;
var ChartElement = (extensions && extensions.hasOwnProperty('constructor')) ? extensions.constructor : function() {
return me.apply(this, arguments);
};
var Surrogate = function() {
this.constructor = ChartElement;
};
Surrogate.prototype = me.prototype;
ChartElement.prototype = new Surrogate();
ChartElement.extend = helpers.inherits;
if (extensions) {
helpers.extend(ChartElement.prototype, extensions);
}
ChartElement.__super__ = me.prototype;
return ChartElement;
};
helpers.noop = function() {};
helpers.uid = (function() {
var id = 0;
return function() {
return id++;
};
}());
// -- Math methods
helpers.isNumber = function(n) {
return !isNaN(parseFloat(n)) && isFinite(n);
};
helpers.almostEquals = function(x, y, epsilon) {
return Math.abs(x - y) < epsilon;
};
helpers.almostWhole = function(x, epsilon) {
var rounded = Math.round(x);
return (((rounded - epsilon) < x) && ((rounded + epsilon) > x));
};
helpers.max = function(array) {
return array.reduce(function(max, value) {
if (!isNaN(value)) {
return Math.max(max, value);
}
return max;
}, Number.NEGATIVE_INFINITY);
};
helpers.min = function(array) {
return array.reduce(function(min, value) {
if (!isNaN(value)) {
return Math.min(min, value);
}
return min;
}, Number.POSITIVE_INFINITY);
};
helpers.sign = Math.sign?
function(x) {
return Math.sign(x);
} :
function(x) {
x = +x; // convert to a number
if (x === 0 || isNaN(x)) {
return x;
}
return x > 0 ? 1 : -1;
};
helpers.log10 = Math.log10?
function(x) {
return Math.log10(x);
} :
function(x) {
return Math.log(x) / Math.LN10;
};
helpers.toRadians = function(degrees) {
return degrees * (Math.PI / 180);
};
helpers.toDegrees = function(radians) {
return radians * (180 / Math.PI);
};
// Gets the angle from vertical upright to the point about a centre.
helpers.getAngleFromPoint = function(centrePoint, anglePoint) {
var distanceFromXCenter = anglePoint.x - centrePoint.x,
distanceFromYCenter = anglePoint.y - centrePoint.y,
radialDistanceFromCenter = Math.sqrt(distanceFromXCenter * distanceFromXCenter + distanceFromYCenter * distanceFromYCenter);
var angle = Math.atan2(distanceFromYCenter, distanceFromXCenter);
if (angle < (-0.5 * Math.PI)) {
angle += 2.0 * Math.PI; // make sure the returned angle is in the range of (-PI/2, 3PI/2]
}
return {
angle: angle,
distance: radialDistanceFromCenter
};
};
helpers.distanceBetweenPoints = function(pt1, pt2) {
return Math.sqrt(Math.pow(pt2.x - pt1.x, 2) + Math.pow(pt2.y - pt1.y, 2));
};
helpers.aliasPixel = function(pixelWidth) {
return (pixelWidth % 2 === 0) ? 0 : 0.5;
};
helpers.splineCurve = function(firstPoint, middlePoint, afterPoint, t) {
// Props to Rob Spencer at scaled innovation for his post on splining between points
// http://scaledinnovation.com/analytics/splines/aboutSplines.html
// This function must also respect "skipped" points
var previous = firstPoint.skip ? middlePoint : firstPoint,
current = middlePoint,
next = afterPoint.skip ? middlePoint : afterPoint;
var d01 = Math.sqrt(Math.pow(current.x - previous.x, 2) + Math.pow(current.y - previous.y, 2));
var d12 = Math.sqrt(Math.pow(next.x - current.x, 2) + Math.pow(next.y - current.y, 2));
var s01 = d01 / (d01 + d12);
var s12 = d12 / (d01 + d12);
// If all points are the same, s01 & s02 will be inf
s01 = isNaN(s01) ? 0 : s01;
s12 = isNaN(s12) ? 0 : s12;
var fa = t * s01; // scaling factor for triangle Ta
var fb = t * s12;
return {
previous: {
x: current.x - fa * (next.x - previous.x),
y: current.y - fa * (next.y - previous.y)
},
next: {
x: current.x + fb * (next.x - previous.x),
y: current.y + fb * (next.y - previous.y)
}
};
};
helpers.EPSILON = Number.EPSILON || 1e-14;
helpers.splineCurveMonotone = function(points) {
// This function calculates Bézier control points in a similar way than |splineCurve|,
// but preserves monotonicity of the provided data and ensures no local extremums are added
// between the dataset discrete points due to the interpolation.
// See : https://en.wikipedia.org/wiki/Monotone_cubic_interpolation
var pointsWithTangents = (points || []).map(function(point) {
return {
model: point._model,
deltaK: 0,
mK: 0
};
});
// Calculate slopes (deltaK) and initialize tangents (mK)
var pointsLen = pointsWithTangents.length;
var i, pointBefore, pointCurrent, pointAfter;
for (i = 0; i < pointsLen; ++i) {
pointCurrent = pointsWithTangents[i];
if (pointCurrent.model.skip) {
continue;
}
pointBefore = i > 0 ? pointsWithTangents[i - 1] : null;
pointAfter = i < pointsLen - 1 ? pointsWithTangents[i + 1] : null;
if (pointAfter && !pointAfter.model.skip) {
var slopeDeltaX = (pointAfter.model.x - pointCurrent.model.x);
// In the case of two points that appear at the same x pixel, slopeDeltaX is 0
pointCurrent.deltaK = slopeDeltaX !== 0 ? (pointAfter.model.y - pointCurrent.model.y) / slopeDeltaX : 0;
}
if (!pointBefore || pointBefore.model.skip) {
pointCurrent.mK = pointCurrent.deltaK;
} else if (!pointAfter || pointAfter.model.skip) {
pointCurrent.mK = pointBefore.deltaK;
} else if (this.sign(pointBefore.deltaK) !== this.sign(pointCurrent.deltaK)) {
pointCurrent.mK = 0;
} else {
pointCurrent.mK = (pointBefore.deltaK + pointCurrent.deltaK) / 2;
}
}
// Adjust tangents to ensure monotonic properties
var alphaK, betaK, tauK, squaredMagnitude;
for (i = 0; i < pointsLen - 1; ++i) {
pointCurrent = pointsWithTangents[i];
pointAfter = pointsWithTangents[i + 1];
if (pointCurrent.model.skip || pointAfter.model.skip) {
continue;
}
if (helpers.almostEquals(pointCurrent.deltaK, 0, this.EPSILON)) {
pointCurrent.mK = pointAfter.mK = 0;
continue;
}
alphaK = pointCurrent.mK / pointCurrent.deltaK;
betaK = pointAfter.mK / pointCurrent.deltaK;
squaredMagnitude = Math.pow(alphaK, 2) + Math.pow(betaK, 2);
if (squaredMagnitude <= 9) {
continue;
}
tauK = 3 / Math.sqrt(squaredMagnitude);
pointCurrent.mK = alphaK * tauK * pointCurrent.deltaK;
pointAfter.mK = betaK * tauK * pointCurrent.deltaK;
}
// Compute control points
var deltaX;
for (i = 0; i < pointsLen; ++i) {
pointCurrent = pointsWithTangents[i];
if (pointCurrent.model.skip) {
continue;
}
pointBefore = i > 0 ? pointsWithTangents[i - 1] : null;
pointAfter = i < pointsLen - 1 ? pointsWithTangents[i + 1] : null;
if (pointBefore && !pointBefore.model.skip) {
deltaX = (pointCurrent.model.x - pointBefore.model.x) / 3;
pointCurrent.model.controlPointPreviousX = pointCurrent.model.x - deltaX;
pointCurrent.model.controlPointPreviousY = pointCurrent.model.y - deltaX * pointCurrent.mK;
}
if (pointAfter && !pointAfter.model.skip) {
deltaX = (pointAfter.model.x - pointCurrent.model.x) / 3;
pointCurrent.model.controlPointNextX = pointCurrent.model.x + deltaX;
pointCurrent.model.controlPointNextY = pointCurrent.model.y + deltaX * pointCurrent.mK;
}
}
};
helpers.nextItem = function(collection, index, loop) {
if (loop) {
return index >= collection.length - 1 ? collection[0] : collection[index + 1];
}
return index >= collection.length - 1 ? collection[collection.length - 1] : collection[index + 1];
};
helpers.previousItem = function(collection, index, loop) {
if (loop) {
return index <= 0 ? collection[collection.length - 1] : collection[index - 1];
}
return index <= 0 ? collection[0] : collection[index - 1];
};
// Implementation of the nice number algorithm used in determining where axis labels will go
helpers.niceNum = function(range, round) {
var exponent = Math.floor(helpers.log10(range));
var fraction = range / Math.pow(10, exponent);
var niceFraction;
if (round) {
if (fraction < 1.5) {
niceFraction = 1;
} else if (fraction < 3) {
niceFraction = 2;
} else if (fraction < 7) {
niceFraction = 5;
} else {
niceFraction = 10;
}
} else if (fraction <= 1.0) {
niceFraction = 1;
} else if (fraction <= 2) {
niceFraction = 2;
} else if (fraction <= 5) {
niceFraction = 5;
} else {
niceFraction = 10;
}
return niceFraction * Math.pow(10, exponent);
};
// Easing functions adapted from Robert Penner's easing equations
// http://www.robertpenner.com/easing/
var easingEffects = helpers.easingEffects = {
linear: function(t) {
return t;
},
easeInQuad: function(t) {
return t * t;
},
easeOutQuad: function(t) {
return -1 * t * (t - 2);
},
easeInOutQuad: function(t) {
if ((t /= 1 / 2) < 1) {
return 1 / 2 * t * t;
}
return -1 / 2 * ((--t) * (t - 2) - 1);
},
easeInCubic: function(t) {
return t * t * t;
},
easeOutCubic: function(t) {
return 1 * ((t = t / 1 - 1) * t * t + 1);
},
easeInOutCubic: function(t) {
if ((t /= 1 / 2) < 1) {
return 1 / 2 * t * t * t;
}
return 1 / 2 * ((t -= 2) * t * t + 2);
},
easeInQuart: function(t) {
return t * t * t * t;
},
easeOutQuart: function(t) {
return -1 * ((t = t / 1 - 1) * t * t * t - 1);
},
easeInOutQuart: function(t) {
if ((t /= 1 / 2) < 1) {
return 1 / 2 * t * t * t * t;
}
return -1 / 2 * ((t -= 2) * t * t * t - 2);
},
easeInQuint: function(t) {
return 1 * (t /= 1) * t * t * t * t;
},
easeOutQuint: function(t) {
return 1 * ((t = t / 1 - 1) * t * t * t * t + 1);
},
easeInOutQuint: function(t) {
if ((t /= 1 / 2) < 1) {
return 1 / 2 * t * t * t * t * t;
}
return 1 / 2 * ((t -= 2) * t * t * t * t + 2);
},
easeInSine: function(t) {
return -1 * Math.cos(t / 1 * (Math.PI / 2)) + 1;
},
easeOutSine: function(t) {
return 1 * Math.sin(t / 1 * (Math.PI / 2));
},
easeInOutSine: function(t) {
return -1 / 2 * (Math.cos(Math.PI * t / 1) - 1);
},
easeInExpo: function(t) {
return (t === 0) ? 1 : 1 * Math.pow(2, 10 * (t / 1 - 1));
},
easeOutExpo: function(t) {
return (t === 1) ? 1 : 1 * (-Math.pow(2, -10 * t / 1) + 1);
},
easeInOutExpo: function(t) {
if (t === 0) {
return 0;
}
if (t === 1) {
return 1;
}
if ((t /= 1 / 2) < 1) {
return 1 / 2 * Math.pow(2, 10 * (t - 1));
}
return 1 / 2 * (-Math.pow(2, -10 * --t) + 2);
},
easeInCirc: function(t) {
if (t >= 1) {
return t;
}
return -1 * (Math.sqrt(1 - (t /= 1) * t) - 1);
},
easeOutCirc: function(t) {
return 1 * Math.sqrt(1 - (t = t / 1 - 1) * t);
},
easeInOutCirc: function(t) {
if ((t /= 1 / 2) < 1) {
return -1 / 2 * (Math.sqrt(1 - t * t) - 1);
}
return 1 / 2 * (Math.sqrt(1 - (t -= 2) * t) + 1);
},
easeInElastic: function(t) {
var s = 1.70158;
var p = 0;
var a = 1;
if (t === 0) {
return 0;
}
if ((t /= 1) === 1) {
return 1;
}
if (!p) {
p = 1 * 0.3;
}
if (a < Math.abs(1)) {
a = 1;
s = p / 4;
} else {
s = p / (2 * Math.PI) * Math.asin(1 / a);
}
return -(a * Math.pow(2, 10 * (t -= 1)) * Math.sin((t * 1 - s) * (2 * Math.PI) / p));
},
easeOutElastic: function(t) {
var s = 1.70158;
var p = 0;
var a = 1;
if (t === 0) {
return 0;
}
if ((t /= 1) === 1) {
return 1;
}
if (!p) {
p = 1 * 0.3;
}
if (a < Math.abs(1)) {
a = 1;
s = p / 4;
} else {
s = p / (2 * Math.PI) * Math.asin(1 / a);
}
return a * Math.pow(2, -10 * t) * Math.sin((t * 1 - s) * (2 * Math.PI) / p) + 1;
},
easeInOutElastic: function(t) {
var s = 1.70158;
var p = 0;
var a = 1;
if (t === 0) {
return 0;
}
if ((t /= 1 / 2) === 2) {
return 1;
}
if (!p) {
p = 1 * (0.3 * 1.5);
}
if (a < Math.abs(1)) {
a = 1;
s = p / 4;
} else {
s = p / (2 * Math.PI) * Math.asin(1 / a);
}
if (t < 1) {
return -0.5 * (a * Math.pow(2, 10 * (t -= 1)) * Math.sin((t * 1 - s) * (2 * Math.PI) / p));
}
return a * Math.pow(2, -10 * (t -= 1)) * Math.sin((t * 1 - s) * (2 * Math.PI) / p) * 0.5 + 1;
},
easeInBack: function(t) {
var s = 1.70158;
return 1 * (t /= 1) * t * ((s + 1) * t - s);
},
easeOutBack: function(t) {
var s = 1.70158;
return 1 * ((t = t / 1 - 1) * t * ((s + 1) * t + s) + 1);
},
easeInOutBack: function(t) {
var s = 1.70158;
if ((t /= 1 / 2) < 1) {
return 1 / 2 * (t * t * (((s *= (1.525)) + 1) * t - s));
}
return 1 / 2 * ((t -= 2) * t * (((s *= (1.525)) + 1) * t + s) + 2);
},
easeInBounce: function(t) {
return 1 - easingEffects.easeOutBounce(1 - t);
},
easeOutBounce: function(t) {
if ((t /= 1) < (1 / 2.75)) {
return 1 * (7.5625 * t * t);
} else if (t < (2 / 2.75)) {
return 1 * (7.5625 * (t -= (1.5 / 2.75)) * t + 0.75);
} else if (t < (2.5 / 2.75)) {
return 1 * (7.5625 * (t -= (2.25 / 2.75)) * t + 0.9375);
}
return 1 * (7.5625 * (t -= (2.625 / 2.75)) * t + 0.984375);
},
easeInOutBounce: function(t) {
if (t < 1 / 2) {
return easingEffects.easeInBounce(t * 2) * 0.5;
}
return easingEffects.easeOutBounce(t * 2 - 1) * 0.5 + 1 * 0.5;
}
};
// Request animation polyfill - http://www.paulirish.com/2011/requestanimationframe-for-smart-animating/
helpers.requestAnimFrame = (function() {
return window.requestAnimationFrame ||
window.webkitRequestAnimationFrame ||
window.mozRequestAnimationFrame ||
window.oRequestAnimationFrame ||
window.msRequestAnimationFrame ||
function(callback) {
return window.setTimeout(callback, 1000 / 60);
};
}());
// -- DOM methods
helpers.getRelativePosition = function(evt, chart) {
var mouseX, mouseY;
var e = evt.originalEvent || evt,
canvas = evt.currentTarget || evt.srcElement,
boundingRect = canvas.getBoundingClientRect();
var touches = e.touches;
if (touches && touches.length > 0) {
mouseX = touches[0].clientX;
mouseY = touches[0].clientY;
} else {
mouseX = e.clientX;
mouseY = e.clientY;
}
// Scale mouse coordinates into canvas coordinates
// by following the pattern laid out by 'jerryj' in the comments of
// http://www.html5canvastutorials.com/advanced/html5-canvas-mouse-coordinates/
var paddingLeft = parseFloat(helpers.getStyle(canvas, 'padding-left'));
var paddingTop = parseFloat(helpers.getStyle(canvas, 'padding-top'));
var paddingRight = parseFloat(helpers.getStyle(canvas, 'padding-right'));
var paddingBottom = parseFloat(helpers.getStyle(canvas, 'padding-bottom'));
var width = boundingRect.right - boundingRect.left - paddingLeft - paddingRight;
var height = boundingRect.bottom - boundingRect.top - paddingTop - paddingBottom;
// We divide by the current device pixel ratio, because the canvas is scaled up by that amount in each direction. However
// the backend model is in unscaled coordinates. Since we are going to deal with our model coordinates, we go back here
mouseX = Math.round((mouseX - boundingRect.left - paddingLeft) / (width) * canvas.width / chart.currentDevicePixelRatio);
mouseY = Math.round((mouseY - boundingRect.top - paddingTop) / (height) * canvas.height / chart.currentDevicePixelRatio);
return {
x: mouseX,
y: mouseY
};
};
helpers.addEvent = function(node, eventType, method) {
if (node.addEventListener) {
node.addEventListener(eventType, method);
} else if (node.attachEvent) {
node.attachEvent('on' + eventType, method);
} else {
node['on' + eventType] = method;
}
};
helpers.removeEvent = function(node, eventType, handler) {
if (node.removeEventListener) {
node.removeEventListener(eventType, handler, false);
} else if (node.detachEvent) {
node.detachEvent('on' + eventType, handler);
} else {
node['on' + eventType] = helpers.noop;
}
};
// Private helper function to convert max-width/max-height values that may be percentages into a number
function parseMaxStyle(styleValue, node, parentProperty) {
var valueInPixels;
if (typeof(styleValue) === 'string') {
valueInPixels = parseInt(styleValue, 10);
if (styleValue.indexOf('%') !== -1) {
// percentage * size in dimension
valueInPixels = valueInPixels / 100 * node.parentNode[parentProperty];
}
} else {
valueInPixels = styleValue;
}
return valueInPixels;
}
/**
* Returns if the given value contains an effective constraint.
* @private
*/
function isConstrainedValue(value) {
return value !== undefined && value !== null && value !== 'none';
}
// Private helper to get a constraint dimension
// @param domNode : the node to check the constraint on
// @param maxStyle : the style that defines the maximum for the direction we are using (maxWidth / maxHeight)
// @param percentageProperty : property of parent to use when calculating width as a percentage
// @see http://www.nathanaeljones.com/blog/2013/reading-max-width-cross-browser
function getConstraintDimension(domNode, maxStyle, percentageProperty) {
var view = document.defaultView;
var parentNode = domNode.parentNode;
var constrainedNode = view.getComputedStyle(domNode)[maxStyle];
var constrainedContainer = view.getComputedStyle(parentNode)[maxStyle];
var hasCNode = isConstrainedValue(constrainedNode);
var hasCContainer = isConstrainedValue(constrainedContainer);
var infinity = Number.POSITIVE_INFINITY;
if (hasCNode || hasCContainer) {
return Math.min(
hasCNode? parseMaxStyle(constrainedNode, domNode, percentageProperty) : infinity,
hasCContainer? parseMaxStyle(constrainedContainer, parentNode, percentageProperty) : infinity);
}
return 'none';
}
// returns Number or undefined if no constraint
helpers.getConstraintWidth = function(domNode) {
return getConstraintDimension(domNode, 'max-width', 'clientWidth');
};
// returns Number or undefined if no constraint
helpers.getConstraintHeight = function(domNode) {
return getConstraintDimension(domNode, 'max-height', 'clientHeight');
};
helpers.getMaximumWidth = function(domNode) {
var container = domNode.parentNode;
var paddingLeft = parseInt(helpers.getStyle(container, 'padding-left'), 10);
var paddingRight = parseInt(helpers.getStyle(container, 'padding-right'), 10);
var w = container.clientWidth - paddingLeft - paddingRight;
var cw = helpers.getConstraintWidth(domNode);
return isNaN(cw)? w : Math.min(w, cw);
};
helpers.getMaximumHeight = function(domNode) {
var container = domNode.parentNode;
var paddingTop = parseInt(helpers.getStyle(container, 'padding-top'), 10);
var paddingBottom = parseInt(helpers.getStyle(container, 'padding-bottom'), 10);
var h = container.clientHeight - paddingTop - paddingBottom;
var ch = helpers.getConstraintHeight(domNode);
return isNaN(ch)? h : Math.min(h, ch);
};
helpers.getStyle = function(el, property) {
return el.currentStyle ?
el.currentStyle[property] :
document.defaultView.getComputedStyle(el, null).getPropertyValue(property);
};
helpers.retinaScale = function(chart) {
var pixelRatio = chart.currentDevicePixelRatio = window.devicePixelRatio || 1;
if (pixelRatio === 1) {
return;
}
var canvas = chart.canvas;
var height = chart.height;
var width = chart.width;
canvas.height = height * pixelRatio;
canvas.width = width * pixelRatio;
chart.ctx.scale(pixelRatio, pixelRatio);
// If no style has been set on the canvas, the render size is used as display size,
// making the chart visually bigger, so let's enforce it to the "correct" values.
// See https://github.com/chartjs/Chart.js/issues/3575
canvas.style.height = height + 'px';
canvas.style.width = width + 'px';
};
// -- Canvas methods
helpers.clear = function(chart) {
chart.ctx.clearRect(0, 0, chart.width, chart.height);
};
helpers.fontString = function(pixelSize, fontStyle, fontFamily) {
return fontStyle + ' ' + pixelSize + 'px ' + fontFamily;
};
helpers.longestText = function(ctx, font, arrayOfThings, cache) {
cache = cache || {};
var data = cache.data = cache.data || {};
var gc = cache.garbageCollect = cache.garbageCollect || [];
if (cache.font !== font) {
data = cache.data = {};
gc = cache.garbageCollect = [];
cache.font = font;
}
ctx.font = font;
var longest = 0;
helpers.each(arrayOfThings, function(thing) {
// Undefined strings and arrays should not be measured
if (thing !== undefined && thing !== null && helpers.isArray(thing) !== true) {
longest = helpers.measureText(ctx, data, gc, longest, thing);
} else if (helpers.isArray(thing)) {
// if it is an array lets measure each element
// to do maybe simplify this function a bit so we can do this more recursively?
helpers.each(thing, function(nestedThing) {
// Undefined strings and arrays should not be measured
if (nestedThing !== undefined && nestedThing !== null && !helpers.isArray(nestedThing)) {
longest = helpers.measureText(ctx, data, gc, longest, nestedThing);
}
});
}
});
var gcLen = gc.length / 2;
if (gcLen > arrayOfThings.length) {
for (var i = 0; i < gcLen; i++) {
delete data[gc[i]];
}
gc.splice(0, gcLen);
}
return longest;
};
helpers.measureText = function(ctx, data, gc, longest, string) {
var textWidth = data[string];
if (!textWidth) {
textWidth = data[string] = ctx.measureText(string).width;
gc.push(string);
}
if (textWidth > longest) {
longest = textWidth;
}
return longest;
};
helpers.numberOfLabelLines = function(arrayOfThings) {
var numberOfLines = 1;
helpers.each(arrayOfThings, function(thing) {
if (helpers.isArray(thing)) {
if (thing.length > numberOfLines) {
numberOfLines = thing.length;
}
}
});
return numberOfLines;
};
helpers.drawRoundedRectangle = function(ctx, x, y, width, height, radius) {
ctx.beginPath();
ctx.moveTo(x + radius, y);
ctx.lineTo(x + width - radius, y);
ctx.quadraticCurveTo(x + width, y, x + width, y + radius);
ctx.lineTo(x + width, y + height - radius);
ctx.quadraticCurveTo(x + width, y + height, x + width - radius, y + height);
ctx.lineTo(x + radius, y + height);
ctx.quadraticCurveTo(x, y + height, x, y + height - radius);
ctx.lineTo(x, y + radius);
ctx.quadraticCurveTo(x, y, x + radius, y);
ctx.closePath();
};
helpers.color = function(c) {
if (!color) {
console.error('Color.js not found!');
return c;
}
/* global CanvasGradient */
if (c instanceof CanvasGradient) {
return color(Chart.defaults.global.defaultColor);
}
return color(c);
};
helpers.isArray = Array.isArray?
function(obj) {
return Array.isArray(obj);
} :
function(obj) {
return Object.prototype.toString.call(obj) === '[object Array]';
};
// ! @see http://stackoverflow.com/a/14853974
helpers.arrayEquals = function(a0, a1) {
var i, ilen, v0, v1;
if (!a0 || !a1 || a0.length !== a1.length) {
return false;
}
for (i = 0, ilen=a0.length; i < ilen; ++i) {
v0 = a0[i];
v1 = a1[i];
if (v0 instanceof Array && v1 instanceof Array) {
if (!helpers.arrayEquals(v0, v1)) {
return false;
}
} else if (v0 !== v1) {
// NOTE: two different object instances will never be equal: {x:20} != {x:20}
return false;
}
}
return true;
};
helpers.callCallback = function(fn, args, _tArg) {
if (fn && typeof fn.call === 'function') {
fn.apply(_tArg, args);
}
};
helpers.getHoverColor = function(colorValue) {
/* global CanvasPattern */
return (colorValue instanceof CanvasPattern) ?
colorValue :
helpers.color(colorValue).saturate(0.5).darken(0.1).rgbString();
};
};
},{"3":3}],27:[function(require,module,exports){
'use strict';
module.exports = function(Chart) {
var helpers = Chart.helpers;
/**
* Helper function to get relative position for an event
* @param {Event|IEvent} event - The event to get the position for
* @param {Chart} chart - The chart
* @returns {Point} the event position
*/
function getRelativePosition(e, chart) {
if (e.native) {
return {
x: e.x,
y: e.y
};
}
return helpers.getRelativePosition(e, chart);
}
/**
* Helper function to traverse all of the visible elements in the chart
* @param chart {chart} the chart
* @param handler {Function} the callback to execute for each visible item
*/
function parseVisibleItems(chart, handler) {
var datasets = chart.data.datasets;
var meta, i, j, ilen, jlen;
for (i = 0, ilen = datasets.length; i < ilen; ++i) {
if (!chart.isDatasetVisible(i)) {
continue;
}
meta = chart.getDatasetMeta(i);
for (j = 0, jlen = meta.data.length; j < jlen; ++j) {
var element = meta.data[j];
if (!element._view.skip) {
handler(element);
}
}
}
}
/**
* Helper function to get the items that intersect the event position
* @param items {ChartElement[]} elements to filter
* @param position {Point} the point to be nearest to
* @return {ChartElement[]} the nearest items
*/
function getIntersectItems(chart, position) {
var elements = [];
parseVisibleItems(chart, function(element) {
if (element.inRange(position.x, position.y)) {
elements.push(element);
}
});
return elements;
}
/**
* Helper function to get the items nearest to the event position considering all visible items in teh chart
* @param chart {Chart} the chart to look at elements from
* @param position {Point} the point to be nearest to
* @param intersect {Boolean} if true, only consider items that intersect the position
* @param distanceMetric {Function} Optional function to provide the distance between
* @return {ChartElement[]} the nearest items
*/
function getNearestItems(chart, position, intersect, distanceMetric) {
var minDistance = Number.POSITIVE_INFINITY;
var nearestItems = [];
if (!distanceMetric) {
distanceMetric = helpers.distanceBetweenPoints;
}
parseVisibleItems(chart, function(element) {
if (intersect && !element.inRange(position.x, position.y)) {
return;
}
var center = element.getCenterPoint();
var distance = distanceMetric(position, center);
if (distance < minDistance) {
nearestItems = [element];
minDistance = distance;
} else if (distance === minDistance) {
// Can have multiple items at the same distance in which case we sort by size
nearestItems.push(element);
}
});
return nearestItems;
}
function indexMode(chart, e, options) {
var position = getRelativePosition(e, chart.chart);
var distanceMetric = function(pt1, pt2) {
return Math.abs(pt1.x - pt2.x);
};
var items = options.intersect ? getIntersectItems(chart, position) : getNearestItems(chart, position, false, distanceMetric);
var elements = [];
if (!items.length) {
return [];
}
chart.data.datasets.forEach(function(dataset, datasetIndex) {
if (chart.isDatasetVisible(datasetIndex)) {
var meta = chart.getDatasetMeta(datasetIndex),
element = meta.data[items[0]._index];
// don't count items that are skipped (null data)
if (element && !element._view.skip) {
elements.push(element);
}
}
});
return elements;
}
/**
* @interface IInteractionOptions
*/
/**
* If true, only consider items that intersect the point
* @name IInterfaceOptions#boolean
* @type Boolean
*/
/**
* Contains interaction related functions
* @namespace Chart.Interaction
*/
Chart.Interaction = {
// Helper function for different modes
modes: {
single: function(chart, e) {
var position = getRelativePosition(e, chart.chart);
var elements = [];
parseVisibleItems(chart, function(element) {
if (element.inRange(position.x, position.y)) {
elements.push(element);
return elements;
}
});
return elements.slice(0, 1);
},
/**
* @function Chart.Interaction.modes.label
* @deprecated since version 2.4.0
*/
label: indexMode,
/**
* Returns items at the same index. If the options.intersect parameter is true, we only return items if we intersect something
* If the options.intersect mode is false, we find the nearest item and return the items at the same index as that item
* @function Chart.Interaction.modes.index
* @since v2.4.0
* @param chart {chart} the chart we are returning items from
* @param e {Event} the event we are find things at
* @param options {IInteractionOptions} options to use during interaction
* @return {Chart.Element[]} Array of elements that are under the point. If none are found, an empty array is returned
*/
index: indexMode,
/**
* Returns items in the same dataset. If the options.intersect parameter is true, we only return items if we intersect something
* If the options.intersect is false, we find the nearest item and return the items in that dataset
* @function Chart.Interaction.modes.dataset
* @param chart {chart} the chart we are returning items from
* @param e {Event} the event we are find things at
* @param options {IInteractionOptions} options to use during interaction
* @return {Chart.Element[]} Array of elements that are under the point. If none are found, an empty array is returned
*/
dataset: function(chart, e, options) {
var position = getRelativePosition(e, chart.chart);
var items = options.intersect ? getIntersectItems(chart, position) : getNearestItems(chart, position, false);
if (items.length > 0) {
items = chart.getDatasetMeta(items[0]._datasetIndex).data;
}
return items;
},
/**
* @function Chart.Interaction.modes.x-axis
* @deprecated since version 2.4.0. Use index mode and intersect == true
*/
'x-axis': function(chart, e) {
return indexMode(chart, e, true);
},
/**
* Point mode returns all elements that hit test based on the event position
* of the event
* @function Chart.Interaction.modes.intersect
* @param chart {chart} the chart we are returning items from
* @param e {Event} the event we are find things at
* @return {Chart.Element[]} Array of elements that are under the point. If none are found, an empty array is returned
*/
point: function(chart, e) {
var position = getRelativePosition(e, chart.chart);
return getIntersectItems(chart, position);
},
/**
* nearest mode returns the element closest to the point
* @function Chart.Interaction.modes.intersect
* @param chart {chart} the chart we are returning items from
* @param e {Event} the event we are find things at
* @param options {IInteractionOptions} options to use
* @return {Chart.Element[]} Array of elements that are under the point. If none are found, an empty array is returned
*/
nearest: function(chart, e, options) {
var position = getRelativePosition(e, chart.chart);
var nearestItems = getNearestItems(chart, position, options.intersect);
// We have multiple items at the same distance from the event. Now sort by smallest
if (nearestItems.length > 1) {
nearestItems.sort(function(a, b) {
var sizeA = a.getArea();
var sizeB = b.getArea();
var ret = sizeA - sizeB;
if (ret === 0) {
// if equal sort by dataset index
ret = a._datasetIndex - b._datasetIndex;
}
return ret;
});
}
// Return only 1 item
return nearestItems.slice(0, 1);
},
/**
* x mode returns the elements that hit-test at the current x coordinate
* @function Chart.Interaction.modes.x
* @param chart {chart} the chart we are returning items from
* @param e {Event} the event we are find things at
* @param options {IInteractionOptions} options to use
* @return {Chart.Element[]} Array of elements that are under the point. If none are found, an empty array is returned
*/
x: function(chart, e, options) {
var position = getRelativePosition(e, chart.chart);
var items = [];
var intersectsItem = false;
parseVisibleItems(chart, function(element) {
if (element.inXRange(position.x)) {
items.push(element);
}
if (element.inRange(position.x, position.y)) {
intersectsItem = true;
}
});
// If we want to trigger on an intersect and we don't have any items
// that intersect the position, return nothing
if (options.intersect && !intersectsItem) {
items = [];
}
return items;
},
/**
* y mode returns the elements that hit-test at the current y coordinate
* @function Chart.Interaction.modes.y
* @param chart {chart} the chart we are returning items from
* @param e {Event} the event we are find things at
* @param options {IInteractionOptions} options to use
* @return {Chart.Element[]} Array of elements that are under the point. If none are found, an empty array is returned
*/
y: function(chart, e, options) {
var position = getRelativePosition(e, chart.chart);
var items = [];
var intersectsItem = false;
parseVisibleItems(chart, function(element) {
if (element.inYRange(position.y)) {
items.push(element);
}
if (element.inRange(position.x, position.y)) {
intersectsItem = true;
}
});
// If we want to trigger on an intersect and we don't have any items
// that intersect the position, return nothing
if (options.intersect && !intersectsItem) {
items = [];
}
return items;
}
}
};
};
},{}],28:[function(require,module,exports){
'use strict';
module.exports = function() {
// Occupy the global variable of Chart, and create a simple base class
var Chart = function(item, config) {
this.controller = new Chart.Controller(item, config, this);
return this.controller;
};
// Globally expose the defaults to allow for user updating/changing
Chart.defaults = {
global: {
responsive: true,
responsiveAnimationDuration: 0,
maintainAspectRatio: true,
events: ['mousemove', 'mouseout', 'click', 'touchstart', 'touchmove'],
hover: {
onHover: null,
mode: 'nearest',
intersect: true,
animationDuration: 400
},
onClick: null,
defaultColor: 'rgba(0,0,0,0.1)',
defaultFontColor: '#666',
defaultFontFamily: "'Helvetica Neue', 'Helvetica', 'Arial', sans-serif",
defaultFontSize: 12,
defaultFontStyle: 'normal',
showLines: true,
// Element defaults defined in element extensions
elements: {},
// Legend callback string
legendCallback: function(chart) {
var text = [];
text.push('<ul class="' + chart.id + '-legend">');
for (var i = 0; i < chart.data.datasets.length; i++) {
text.push('<li><span style="background-color:' + chart.data.datasets[i].backgroundColor + '"></span>');
if (chart.data.datasets[i].label) {
text.push(chart.data.datasets[i].label);
}
text.push('</li>');
}
text.push('</ul>');
return text.join('');
}
}
};
Chart.Chart = Chart;
return Chart;
};
},{}],29:[function(require,module,exports){
'use strict';
module.exports = function(Chart) {
var helpers = Chart.helpers;
// The layout service is very self explanatory. It's responsible for the layout within a chart.
// Scales, Legends and Plugins all rely on the layout service and can easily register to be placed anywhere they need
// It is this service's responsibility of carrying out that layout.
Chart.layoutService = {
defaults: {},
// Register a box to a chartInstance. A box is simply a reference to an object that requires layout. eg. Scales, Legend, Plugins.
addBox: function(chartInstance, box) {
if (!chartInstance.boxes) {
chartInstance.boxes = [];
}
chartInstance.boxes.push(box);
},
removeBox: function(chartInstance, box) {
if (!chartInstance.boxes) {
return;
}
chartInstance.boxes.splice(chartInstance.boxes.indexOf(box), 1);
},
// The most important function
update: function(chartInstance, width, height) {
if (!chartInstance) {
return;
}
var layoutOptions = chartInstance.options.layout;
var padding = layoutOptions ? layoutOptions.padding : null;
var leftPadding = 0;
var rightPadding = 0;
var topPadding = 0;
var bottomPadding = 0;
if (!isNaN(padding)) {
// options.layout.padding is a number. assign to all
leftPadding = padding;
rightPadding = padding;
topPadding = padding;
bottomPadding = padding;
} else {
leftPadding = padding.left || 0;
rightPadding = padding.right || 0;
topPadding = padding.top || 0;
bottomPadding = padding.bottom || 0;
}
var leftBoxes = helpers.where(chartInstance.boxes, function(box) {
return box.options.position === 'left';
});
var rightBoxes = helpers.where(chartInstance.boxes, function(box) {
return box.options.position === 'right';
});
var topBoxes = helpers.where(chartInstance.boxes, function(box) {
return box.options.position === 'top';
});
var bottomBoxes = helpers.where(chartInstance.boxes, function(box) {
return box.options.position === 'bottom';
});
// Boxes that overlay the chartarea such as the radialLinear scale
var chartAreaBoxes = helpers.where(chartInstance.boxes, function(box) {
return box.options.position === 'chartArea';
});
// Ensure that full width boxes are at the very top / bottom
topBoxes.sort(function(a, b) {
return (b.options.fullWidth ? 1 : 0) - (a.options.fullWidth ? 1 : 0);
});
bottomBoxes.sort(function(a, b) {
return (a.options.fullWidth ? 1 : 0) - (b.options.fullWidth ? 1 : 0);
});
// Essentially we now have any number of boxes on each of the 4 sides.
// Our canvas looks like the following.
// The areas L1 and L2 are the left axes. R1 is the right axis, T1 is the top axis and
// B1 is the bottom axis
// There are also 4 quadrant-like locations (left to right instead of clockwise) reserved for chart overlays
// These locations are single-box locations only, when trying to register a chartArea location that is already taken,
// an error will be thrown.
//
// |----------------------------------------------------|
// | T1 (Full Width) |
// |----------------------------------------------------|
// | | | T2 | |
// | |----|-------------------------------------|----|
// | | | C1 | | C2 | |
// | | |----| |----| |
// | | | | |
// | L1 | L2 | ChartArea (C0) | R1 |
// | | | | |
// | | |----| |----| |
// | | | C3 | | C4 | |
// | |----|-------------------------------------|----|
// | | | B1 | |
// |----------------------------------------------------|
// | B2 (Full Width) |
// |----------------------------------------------------|
//
// What we do to find the best sizing, we do the following
// 1. Determine the minimum size of the chart area.
// 2. Split the remaining width equally between each vertical axis
// 3. Split the remaining height equally between each horizontal axis
// 4. Give each layout the maximum size it can be. The layout will return it's minimum size
// 5. Adjust the sizes of each axis based on it's minimum reported size.
// 6. Refit each axis
// 7. Position each axis in the final location
// 8. Tell the chart the final location of the chart area
// 9. Tell any axes that overlay the chart area the positions of the chart area
// Step 1
var chartWidth = width - leftPadding - rightPadding;
var chartHeight = height - topPadding - bottomPadding;
var chartAreaWidth = chartWidth / 2; // min 50%
var chartAreaHeight = chartHeight / 2; // min 50%
// Step 2
var verticalBoxWidth = (width - chartAreaWidth) / (leftBoxes.length + rightBoxes.length);
// Step 3
var horizontalBoxHeight = (height - chartAreaHeight) / (topBoxes.length + bottomBoxes.length);
// Step 4
var maxChartAreaWidth = chartWidth;
var maxChartAreaHeight = chartHeight;
var minBoxSizes = [];
function getMinimumBoxSize(box) {
var minSize;
var isHorizontal = box.isHorizontal();
if (isHorizontal) {
minSize = box.update(box.options.fullWidth ? chartWidth : maxChartAreaWidth, horizontalBoxHeight);
maxChartAreaHeight -= minSize.height;
} else {
minSize = box.update(verticalBoxWidth, chartAreaHeight);
maxChartAreaWidth -= minSize.width;
}
minBoxSizes.push({
horizontal: isHorizontal,
minSize: minSize,
box: box,
});
}
helpers.each(leftBoxes.concat(rightBoxes, topBoxes, bottomBoxes), getMinimumBoxSize);
// If a horizontal box has padding, we move the left boxes over to avoid ugly charts (see issue #2478)
var maxHorizontalLeftPadding = 0;
var maxHorizontalRightPadding = 0;
var maxVerticalTopPadding = 0;
var maxVerticalBottomPadding = 0;
helpers.each(topBoxes.concat(bottomBoxes), function(horizontalBox) {
if (horizontalBox.getPadding) {
var boxPadding = horizontalBox.getPadding();
maxHorizontalLeftPadding = Math.max(maxHorizontalLeftPadding, boxPadding.left);
maxHorizontalRightPadding = Math.max(maxHorizontalRightPadding, boxPadding.right);
}
});
helpers.each(leftBoxes.concat(rightBoxes), function(verticalBox) {
if (verticalBox.getPadding) {
var boxPadding = verticalBox.getPadding();
maxVerticalTopPadding = Math.max(maxVerticalTopPadding, boxPadding.top);
maxVerticalBottomPadding = Math.max(maxVerticalBottomPadding, boxPadding.bottom);
}
});
// At this point, maxChartAreaHeight and maxChartAreaWidth are the size the chart area could
// be if the axes are drawn at their minimum sizes.
// Steps 5 & 6
var totalLeftBoxesWidth = leftPadding;
var totalRightBoxesWidth = rightPadding;
var totalTopBoxesHeight = topPadding;
var totalBottomBoxesHeight = bottomPadding;
// Function to fit a box
function fitBox(box) {
var minBoxSize = helpers.findNextWhere(minBoxSizes, function(minBox) {
return minBox.box === box;
});
if (minBoxSize) {
if (box.isHorizontal()) {
var scaleMargin = {
left: Math.max(totalLeftBoxesWidth, maxHorizontalLeftPadding),
right: Math.max(totalRightBoxesWidth, maxHorizontalRightPadding),
top: 0,
bottom: 0
};
// Don't use min size here because of label rotation. When the labels are rotated, their rotation highly depends
// on the margin. Sometimes they need to increase in size slightly
box.update(box.options.fullWidth ? chartWidth : maxChartAreaWidth, chartHeight / 2, scaleMargin);
} else {
box.update(minBoxSize.minSize.width, maxChartAreaHeight);
}
}
}
// Update, and calculate the left and right margins for the horizontal boxes
helpers.each(leftBoxes.concat(rightBoxes), fitBox);
helpers.each(leftBoxes, function(box) {
totalLeftBoxesWidth += box.width;
});
helpers.each(rightBoxes, function(box) {
totalRightBoxesWidth += box.width;
});
// Set the Left and Right margins for the horizontal boxes
helpers.each(topBoxes.concat(bottomBoxes), fitBox);
// Figure out how much margin is on the top and bottom of the vertical boxes
helpers.each(topBoxes, function(box) {
totalTopBoxesHeight += box.height;
});
helpers.each(bottomBoxes, function(box) {
totalBottomBoxesHeight += box.height;
});
function finalFitVerticalBox(box) {
var minBoxSize = helpers.findNextWhere(minBoxSizes, function(minSize) {
return minSize.box === box;
});
var scaleMargin = {
left: 0,
right: 0,
top: totalTopBoxesHeight,
bottom: totalBottomBoxesHeight
};
if (minBoxSize) {
box.update(minBoxSize.minSize.width, maxChartAreaHeight, scaleMargin);
}
}
// Let the left layout know the final margin
helpers.each(leftBoxes.concat(rightBoxes), finalFitVerticalBox);
// Recalculate because the size of each layout might have changed slightly due to the margins (label rotation for instance)
totalLeftBoxesWidth = leftPadding;
totalRightBoxesWidth = rightPadding;
totalTopBoxesHeight = topPadding;
totalBottomBoxesHeight = bottomPadding;
helpers.each(leftBoxes, function(box) {
totalLeftBoxesWidth += box.width;
});
helpers.each(rightBoxes, function(box) {
totalRightBoxesWidth += box.width;
});
helpers.each(topBoxes, function(box) {
totalTopBoxesHeight += box.height;
});
helpers.each(bottomBoxes, function(box) {
totalBottomBoxesHeight += box.height;
});
// We may be adding some padding to account for rotated x axis labels
var leftPaddingAddition = Math.max(maxHorizontalLeftPadding - totalLeftBoxesWidth, 0);
totalLeftBoxesWidth += leftPaddingAddition;
totalRightBoxesWidth += Math.max(maxHorizontalRightPadding - totalRightBoxesWidth, 0);
var topPaddingAddition = Math.max(maxVerticalTopPadding - totalTopBoxesHeight, 0);
totalTopBoxesHeight += topPaddingAddition;
totalBottomBoxesHeight += Math.max(maxVerticalBottomPadding - totalBottomBoxesHeight, 0);
// Figure out if our chart area changed. This would occur if the dataset layout label rotation
// changed due to the application of the margins in step 6. Since we can only get bigger, this is safe to do
// without calling `fit` again
var newMaxChartAreaHeight = height - totalTopBoxesHeight - totalBottomBoxesHeight;
var newMaxChartAreaWidth = width - totalLeftBoxesWidth - totalRightBoxesWidth;
if (newMaxChartAreaWidth !== maxChartAreaWidth || newMaxChartAreaHeight !== maxChartAreaHeight) {
helpers.each(leftBoxes, function(box) {
box.height = newMaxChartAreaHeight;
});
helpers.each(rightBoxes, function(box) {
box.height = newMaxChartAreaHeight;
});
helpers.each(topBoxes, function(box) {
if (!box.options.fullWidth) {
box.width = newMaxChartAreaWidth;
}
});
helpers.each(bottomBoxes, function(box) {
if (!box.options.fullWidth) {
box.width = newMaxChartAreaWidth;
}
});
maxChartAreaHeight = newMaxChartAreaHeight;
maxChartAreaWidth = newMaxChartAreaWidth;
}
// Step 7 - Position the boxes
var left = leftPadding + leftPaddingAddition;
var top = topPadding + topPaddingAddition;
function placeBox(box) {
if (box.isHorizontal()) {
box.left = box.options.fullWidth ? leftPadding : totalLeftBoxesWidth;
box.right = box.options.fullWidth ? width - rightPadding : totalLeftBoxesWidth + maxChartAreaWidth;
box.top = top;
box.bottom = top + box.height;
// Move to next point
top = box.bottom;
} else {
box.left = left;
box.right = left + box.width;
box.top = totalTopBoxesHeight;
box.bottom = totalTopBoxesHeight + maxChartAreaHeight;
// Move to next point
left = box.right;
}
}
helpers.each(leftBoxes.concat(topBoxes), placeBox);
// Account for chart width and height
left += maxChartAreaWidth;
top += maxChartAreaHeight;
helpers.each(rightBoxes, placeBox);
helpers.each(bottomBoxes, placeBox);
// Step 8
chartInstance.chartArea = {
left: totalLeftBoxesWidth,
top: totalTopBoxesHeight,
right: totalLeftBoxesWidth + maxChartAreaWidth,
bottom: totalTopBoxesHeight + maxChartAreaHeight
};
// Step 9
helpers.each(chartAreaBoxes, function(box) {
box.left = chartInstance.chartArea.left;
box.top = chartInstance.chartArea.top;
box.right = chartInstance.chartArea.right;
box.bottom = chartInstance.chartArea.bottom;
box.update(maxChartAreaWidth, maxChartAreaHeight);
});
}
};
};
},{}],30:[function(require,module,exports){
'use strict';
module.exports = function(Chart) {
var helpers = Chart.helpers;
var noop = helpers.noop;
Chart.defaults.global.legend = {
display: true,
position: 'top',
fullWidth: true, // marks that this box should take the full width of the canvas (pushing down other boxes)
reverse: false,
// a callback that will handle
onClick: function(e, legendItem) {
var index = legendItem.datasetIndex;
var ci = this.chart;
var meta = ci.getDatasetMeta(index);
// See controller.isDatasetVisible comment
meta.hidden = meta.hidden === null? !ci.data.datasets[index].hidden : null;
// We hid a dataset ... rerender the chart
ci.update();
},
onHover: null,
labels: {
boxWidth: 40,
padding: 10,
// Generates labels shown in the legend
// Valid properties to return:
// text : text to display
// fillStyle : fill of coloured box
// strokeStyle: stroke of coloured box
// hidden : if this legend item refers to a hidden item
// lineCap : cap style for line
// lineDash
// lineDashOffset :
// lineJoin :
// lineWidth :
generateLabels: function(chart) {
var data = chart.data;
return helpers.isArray(data.datasets) ? data.datasets.map(function(dataset, i) {
return {
text: dataset.label,
fillStyle: (!helpers.isArray(dataset.backgroundColor) ? dataset.backgroundColor : dataset.backgroundColor[0]),
hidden: !chart.isDatasetVisible(i),
lineCap: dataset.borderCapStyle,
lineDash: dataset.borderDash,
lineDashOffset: dataset.borderDashOffset,
lineJoin: dataset.borderJoinStyle,
lineWidth: dataset.borderWidth,
strokeStyle: dataset.borderColor,
pointStyle: dataset.pointStyle,
// Below is extra data used for toggling the datasets
datasetIndex: i
};
}, this) : [];
}
}
};
/**
* Helper function to get the box width based on the usePointStyle option
* @param labelopts {Object} the label options on the legend
* @param fontSize {Number} the label font size
* @return {Number} width of the color box area
*/
function getBoxWidth(labelOpts, fontSize) {
return labelOpts.usePointStyle ?
fontSize * Math.SQRT2 :
labelOpts.boxWidth;
}
Chart.Legend = Chart.Element.extend({
initialize: function(config) {
helpers.extend(this, config);
// Contains hit boxes for each dataset (in dataset order)
this.legendHitBoxes = [];
// Are we in doughnut mode which has a different data type
this.doughnutMode = false;
},
// These methods are ordered by lifecycle. Utilities then follow.
// Any function defined here is inherited by all legend types.
// Any function can be extended by the legend type
beforeUpdate: noop,
update: function(maxWidth, maxHeight, margins) {
var me = this;
// Update Lifecycle - Probably don't want to ever extend or overwrite this function ;)
me.beforeUpdate();
// Absorb the master measurements
me.maxWidth = maxWidth;
me.maxHeight = maxHeight;
me.margins = margins;
// Dimensions
me.beforeSetDimensions();
me.setDimensions();
me.afterSetDimensions();
// Labels
me.beforeBuildLabels();
me.buildLabels();
me.afterBuildLabels();
// Fit
me.beforeFit();
me.fit();
me.afterFit();
//
me.afterUpdate();
return me.minSize;
},
afterUpdate: noop,
//
beforeSetDimensions: noop,
setDimensions: function() {
var me = this;
// Set the unconstrained dimension before label rotation
if (me.isHorizontal()) {
// Reset position before calculating rotation
me.width = me.maxWidth;
me.left = 0;
me.right = me.width;
} else {
me.height = me.maxHeight;
// Reset position before calculating rotation
me.top = 0;
me.bottom = me.height;
}
// Reset padding
me.paddingLeft = 0;
me.paddingTop = 0;
me.paddingRight = 0;
me.paddingBottom = 0;
// Reset minSize
me.minSize = {
width: 0,
height: 0
};
},
afterSetDimensions: noop,
//
beforeBuildLabels: noop,
buildLabels: function() {
var me = this;
var labelOpts = me.options.labels;
var legendItems = labelOpts.generateLabels.call(me, me.chart);
if (labelOpts.filter) {
legendItems = legendItems.filter(function(item) {
return labelOpts.filter(item, me.chart.data);
});
}
if (me.options.reverse) {
legendItems.reverse();
}
me.legendItems = legendItems;
},
afterBuildLabels: noop,
//
beforeFit: noop,
fit: function() {
var me = this;
var opts = me.options;
var labelOpts = opts.labels;
var display = opts.display;
var ctx = me.ctx;
var globalDefault = Chart.defaults.global,
itemOrDefault = helpers.getValueOrDefault,
fontSize = itemOrDefault(labelOpts.fontSize, globalDefault.defaultFontSize),
fontStyle = itemOrDefault(labelOpts.fontStyle, globalDefault.defaultFontStyle),
fontFamily = itemOrDefault(labelOpts.fontFamily, globalDefault.defaultFontFamily),
labelFont = helpers.fontString(fontSize, fontStyle, fontFamily);
// Reset hit boxes
var hitboxes = me.legendHitBoxes = [];
var minSize = me.minSize;
var isHorizontal = me.isHorizontal();
if (isHorizontal) {
minSize.width = me.maxWidth; // fill all the width
minSize.height = display ? 10 : 0;
} else {
minSize.width = display ? 10 : 0;
minSize.height = me.maxHeight; // fill all the height
}
// Increase sizes here
if (display) {
ctx.font = labelFont;
if (isHorizontal) {
// Labels
// Width of each line of legend boxes. Labels wrap onto multiple lines when there are too many to fit on one
var lineWidths = me.lineWidths = [0];
var totalHeight = me.legendItems.length ? fontSize + (labelOpts.padding) : 0;
ctx.textAlign = 'left';
ctx.textBaseline = 'top';
helpers.each(me.legendItems, function(legendItem, i) {
var boxWidth = getBoxWidth(labelOpts, fontSize);
var width = boxWidth + (fontSize / 2) + ctx.measureText(legendItem.text).width;
if (lineWidths[lineWidths.length - 1] + width + labelOpts.padding >= me.width) {
totalHeight += fontSize + (labelOpts.padding);
lineWidths[lineWidths.length] = me.left;
}
// Store the hitbox width and height here. Final position will be updated in `draw`
hitboxes[i] = {
left: 0,
top: 0,
width: width,
height: fontSize
};
lineWidths[lineWidths.length - 1] += width + labelOpts.padding;
});
minSize.height += totalHeight;
} else {
var vPadding = labelOpts.padding;
var columnWidths = me.columnWidths = [];
var totalWidth = labelOpts.padding;
var currentColWidth = 0;
var currentColHeight = 0;
var itemHeight = fontSize + vPadding;
helpers.each(me.legendItems, function(legendItem, i) {
var boxWidth = getBoxWidth(labelOpts, fontSize);
var itemWidth = boxWidth + (fontSize / 2) + ctx.measureText(legendItem.text).width;
// If too tall, go to new column
if (currentColHeight + itemHeight > minSize.height) {
totalWidth += currentColWidth + labelOpts.padding;
columnWidths.push(currentColWidth); // previous column width
currentColWidth = 0;
currentColHeight = 0;
}
// Get max width
currentColWidth = Math.max(currentColWidth, itemWidth);
currentColHeight += itemHeight;
// Store the hitbox width and height here. Final position will be updated in `draw`
hitboxes[i] = {
left: 0,
top: 0,
width: itemWidth,
height: fontSize
};
});
totalWidth += currentColWidth;
columnWidths.push(currentColWidth);
minSize.width += totalWidth;
}
}
me.width = minSize.width;
me.height = minSize.height;
},
afterFit: noop,
// Shared Methods
isHorizontal: function() {
return this.options.position === 'top' || this.options.position === 'bottom';
},
// Actually draw the legend on the canvas
draw: function() {
var me = this;
var opts = me.options;
var labelOpts = opts.labels;
var globalDefault = Chart.defaults.global,
lineDefault = globalDefault.elements.line,
legendWidth = me.width,
lineWidths = me.lineWidths;
if (opts.display) {
var ctx = me.ctx,
cursor,
itemOrDefault = helpers.getValueOrDefault,
fontColor = itemOrDefault(labelOpts.fontColor, globalDefault.defaultFontColor),
fontSize = itemOrDefault(labelOpts.fontSize, globalDefault.defaultFontSize),
fontStyle = itemOrDefault(labelOpts.fontStyle, globalDefault.defaultFontStyle),
fontFamily = itemOrDefault(labelOpts.fontFamily, globalDefault.defaultFontFamily),
labelFont = helpers.fontString(fontSize, fontStyle, fontFamily);
// Canvas setup
ctx.textAlign = 'left';
ctx.textBaseline = 'top';
ctx.lineWidth = 0.5;
ctx.strokeStyle = fontColor; // for strikethrough effect
ctx.fillStyle = fontColor; // render in correct colour
ctx.font = labelFont;
var boxWidth = getBoxWidth(labelOpts, fontSize),
hitboxes = me.legendHitBoxes;
// current position
var drawLegendBox = function(x, y, legendItem) {
if (isNaN(boxWidth) || boxWidth <= 0) {
return;
}
// Set the ctx for the box
ctx.save();
ctx.fillStyle = itemOrDefault(legendItem.fillStyle, globalDefault.defaultColor);
ctx.lineCap = itemOrDefault(legendItem.lineCap, lineDefault.borderCapStyle);
ctx.lineDashOffset = itemOrDefault(legendItem.lineDashOffset, lineDefault.borderDashOffset);
ctx.lineJoin = itemOrDefault(legendItem.lineJoin, lineDefault.borderJoinStyle);
ctx.lineWidth = itemOrDefault(legendItem.lineWidth, lineDefault.borderWidth);
ctx.strokeStyle = itemOrDefault(legendItem.strokeStyle, globalDefault.defaultColor);
var isLineWidthZero = (itemOrDefault(legendItem.lineWidth, lineDefault.borderWidth) === 0);
if (ctx.setLineDash) {
// IE 9 and 10 do not support line dash
ctx.setLineDash(itemOrDefault(legendItem.lineDash, lineDefault.borderDash));
}
if (opts.labels && opts.labels.usePointStyle) {
// Recalculate x and y for drawPoint() because its expecting
// x and y to be center of figure (instead of top left)
var radius = fontSize * Math.SQRT2 / 2;
var offSet = radius / Math.SQRT2;
var centerX = x + offSet;
var centerY = y + offSet;
// Draw pointStyle as legend symbol
Chart.canvasHelpers.drawPoint(ctx, legendItem.pointStyle, radius, centerX, centerY);
} else {
// Draw box as legend symbol
if (!isLineWidthZero) {
ctx.strokeRect(x, y, boxWidth, fontSize);
}
ctx.fillRect(x, y, boxWidth, fontSize);
}
ctx.restore();
};
var fillText = function(x, y, legendItem, textWidth) {
ctx.fillText(legendItem.text, boxWidth + (fontSize / 2) + x, y);
if (legendItem.hidden) {
// Strikethrough the text if hidden
ctx.beginPath();
ctx.lineWidth = 2;
ctx.moveTo(boxWidth + (fontSize / 2) + x, y + (fontSize / 2));
ctx.lineTo(boxWidth + (fontSize / 2) + x + textWidth, y + (fontSize / 2));
ctx.stroke();
}
};
// Horizontal
var isHorizontal = me.isHorizontal();
if (isHorizontal) {
cursor = {
x: me.left + ((legendWidth - lineWidths[0]) / 2),
y: me.top + labelOpts.padding,
line: 0
};
} else {
cursor = {
x: me.left + labelOpts.padding,
y: me.top + labelOpts.padding,
line: 0
};
}
var itemHeight = fontSize + labelOpts.padding;
helpers.each(me.legendItems, function(legendItem, i) {
var textWidth = ctx.measureText(legendItem.text).width,
width = boxWidth + (fontSize / 2) + textWidth,
x = cursor.x,
y = cursor.y;
if (isHorizontal) {
if (x + width >= legendWidth) {
y = cursor.y += itemHeight;
cursor.line++;
x = cursor.x = me.left + ((legendWidth - lineWidths[cursor.line]) / 2);
}
} else if (y + itemHeight > me.bottom) {
x = cursor.x = x + me.columnWidths[cursor.line] + labelOpts.padding;
y = cursor.y = me.top + labelOpts.padding;
cursor.line++;
}
drawLegendBox(x, y, legendItem);
hitboxes[i].left = x;
hitboxes[i].top = y;
// Fill the actual label
fillText(x, y, legendItem, textWidth);
if (isHorizontal) {
cursor.x += width + (labelOpts.padding);
} else {
cursor.y += itemHeight;
}
});
}
},
/**
* Handle an event
* @private
* @param {IEvent} event - The event to handle
* @return {Boolean} true if a change occured
*/
handleEvent: function(e) {
var me = this;
var opts = me.options;
var type = e.type === 'mouseup' ? 'click' : e.type;
var changed = false;
if (type === 'mousemove') {
if (!opts.onHover) {
return;
}
} else if (type === 'click') {
if (!opts.onClick) {
return;
}
} else {
return;
}
// Chart event already has relative position in it
var x = e.x,
y = e.y;
if (x >= me.left && x <= me.right && y >= me.top && y <= me.bottom) {
// See if we are touching one of the dataset boxes
var lh = me.legendHitBoxes;
for (var i = 0; i < lh.length; ++i) {
var hitBox = lh[i];
if (x >= hitBox.left && x <= hitBox.left + hitBox.width && y >= hitBox.top && y <= hitBox.top + hitBox.height) {
// Touching an element
if (type === 'click') {
// use e.native for backwards compatibility
opts.onClick.call(me, e.native, me.legendItems[i]);
changed = true;
break;
} else if (type === 'mousemove') {
// use e.native for backwards compatibility
opts.onHover.call(me, e.native, me.legendItems[i]);
changed = true;
break;
}
}
}
}
return changed;
}
});
function createNewLegendAndAttach(chartInstance, legendOpts) {
var legend = new Chart.Legend({
ctx: chartInstance.chart.ctx,
options: legendOpts,
chart: chartInstance
});
chartInstance.legend = legend;
Chart.layoutService.addBox(chartInstance, legend);
}
// Register the legend plugin
Chart.plugins.register({
beforeInit: function(chartInstance) {
var legendOpts = chartInstance.options.legend;
if (legendOpts) {
createNewLegendAndAttach(chartInstance, legendOpts);
}
},
beforeUpdate: function(chartInstance) {
var legendOpts = chartInstance.options.legend;
if (legendOpts) {
legendOpts = helpers.configMerge(Chart.defaults.global.legend, legendOpts);
if (chartInstance.legend) {
chartInstance.legend.options = legendOpts;
} else {
createNewLegendAndAttach(chartInstance, legendOpts);
}
} else {
Chart.layoutService.removeBox(chartInstance, chartInstance.legend);
delete chartInstance.legend;
}
},
afterEvent: function(chartInstance, e) {
var legend = chartInstance.legend;
if (legend) {
legend.handleEvent(e);
}
}
});
};
},{}],31:[function(require,module,exports){
'use strict';
module.exports = function(Chart) {
var helpers = Chart.helpers;
Chart.defaults.global.plugins = {};
/**
* The plugin service singleton
* @namespace Chart.plugins
* @since 2.1.0
*/
Chart.plugins = {
/**
* Globally registered plugins.
* @private
*/
_plugins: [],
/**
* This identifier is used to invalidate the descriptors cache attached to each chart
* when a global plugin is registered or unregistered. In this case, the cache ID is
* incremented and descriptors are regenerated during following API calls.
* @private
*/
_cacheId: 0,
/**
* Registers the given plugin(s) if not already registered.
* @param {Array|Object} plugins plugin instance(s).
*/
register: function(plugins) {
var p = this._plugins;
([]).concat(plugins).forEach(function(plugin) {
if (p.indexOf(plugin) === -1) {
p.push(plugin);
}
});
this._cacheId++;
},
/**
* Unregisters the given plugin(s) only if registered.
* @param {Array|Object} plugins plugin instance(s).
*/
unregister: function(plugins) {
var p = this._plugins;
([]).concat(plugins).forEach(function(plugin) {
var idx = p.indexOf(plugin);
if (idx !== -1) {
p.splice(idx, 1);
}
});
this._cacheId++;
},
/**
* Remove all registered plugins.
* @since 2.1.5
*/
clear: function() {
this._plugins = [];
this._cacheId++;
},
/**
* Returns the number of registered plugins?
* @returns {Number}
* @since 2.1.5
*/
count: function() {
return this._plugins.length;
},
/**
* Returns all registered plugin instances.
* @returns {Array} array of plugin objects.
* @since 2.1.5
*/
getAll: function() {
return this._plugins;
},
/**
* Calls enabled plugins for `chart` on the specified hook and with the given args.
* This method immediately returns as soon as a plugin explicitly returns false. The
* returned value can be used, for instance, to interrupt the current action.
* @param {Object} chart - The chart instance for which plugins should be called.
* @param {String} hook - The name of the plugin method to call (e.g. 'beforeUpdate').
* @param {Array} [args] - Extra arguments to apply to the hook call.
* @returns {Boolean} false if any of the plugins return false, else returns true.
*/
notify: function(chart, hook, args) {
var descriptors = this.descriptors(chart);
var ilen = descriptors.length;
var i, descriptor, plugin, params, method;
for (i=0; i<ilen; ++i) {
descriptor = descriptors[i];
plugin = descriptor.plugin;
method = plugin[hook];
if (typeof method === 'function') {
params = [chart].concat(args || []);
params.push(descriptor.options);
if (method.apply(plugin, params) === false) {
return false;
}
}
}
return true;
},
/**
* Returns descriptors of enabled plugins for the given chart.
* @returns {Array} [{ plugin, options }]
* @private
*/
descriptors: function(chart) {
var cache = chart._plugins || (chart._plugins = {});
if (cache.id === this._cacheId) {
return cache.descriptors;
}
var plugins = [];
var descriptors = [];
var config = (chart && chart.config) || {};
var defaults = Chart.defaults.global.plugins;
var options = (config.options && config.options.plugins) || {};
this._plugins.concat(config.plugins || []).forEach(function(plugin) {
var idx = plugins.indexOf(plugin);
if (idx !== -1) {
return;
}
var id = plugin.id;
var opts = options[id];
if (opts === false) {
return;
}
if (opts === true) {
opts = helpers.clone(defaults[id]);
}
plugins.push(plugin);
descriptors.push({
plugin: plugin,
options: opts || {}
});
});
cache.descriptors = descriptors;
cache.id = this._cacheId;
return descriptors;
}
};
/**
* Plugin extension hooks.
* @interface IPlugin
* @since 2.1.0
*/
/**
* @method IPlugin#beforeInit
* @desc Called before initializing `chart`.
* @param {Chart.Controller} chart - The chart instance.
* @param {Object} options - The plugin options.
*/
/**
* @method IPlugin#afterInit
* @desc Called after `chart` has been initialized and before the first update.
* @param {Chart.Controller} chart - The chart instance.
* @param {Object} options - The plugin options.
*/
/**
* @method IPlugin#beforeUpdate
* @desc Called before updating `chart`. If any plugin returns `false`, the update
* is cancelled (and thus subsequent render(s)) until another `update` is triggered.
* @param {Chart.Controller} chart - The chart instance.
* @param {Object} options - The plugin options.
* @returns {Boolean} `false` to cancel the chart update.
*/
/**
* @method IPlugin#afterUpdate
* @desc Called after `chart` has been updated and before rendering. Note that this
* hook will not be called if the chart update has been previously cancelled.
* @param {Chart.Controller} chart - The chart instance.
* @param {Object} options - The plugin options.
*/
/**
* @method IPlugin#beforeDatasetsUpdate
* @desc Called before updating the `chart` datasets. If any plugin returns `false`,
* the datasets update is cancelled until another `update` is triggered.
* @param {Chart.Controller} chart - The chart instance.
* @param {Object} options - The plugin options.
* @returns {Boolean} false to cancel the datasets update.
* @since version 2.1.5
*/
/**
* @method IPlugin#afterDatasetsUpdate
* @desc Called after the `chart` datasets have been updated. Note that this hook
* will not be called if the datasets update has been previously cancelled.
* @param {Chart.Controller} chart - The chart instance.
* @param {Object} options - The plugin options.
* @since version 2.1.5
*/
/**
* @method IPlugin#beforeLayout
* @desc Called before laying out `chart`. If any plugin returns `false`,
* the layout update is cancelled until another `update` is triggered.
* @param {Chart.Controller} chart - The chart instance.
* @param {Object} options - The plugin options.
* @returns {Boolean} `false` to cancel the chart layout.
*/
/**
* @method IPlugin#afterLayout
* @desc Called after the `chart` has been layed out. Note that this hook will not
* be called if the layout update has been previously cancelled.
* @param {Chart.Controller} chart - The chart instance.
* @param {Object} options - The plugin options.
*/
/**
* @method IPlugin#beforeRender
* @desc Called before rendering `chart`. If any plugin returns `false`,
* the rendering is cancelled until another `render` is triggered.
* @param {Chart.Controller} chart - The chart instance.
* @param {Object} options - The plugin options.
* @returns {Boolean} `false` to cancel the chart rendering.
*/
/**
* @method IPlugin#afterRender
* @desc Called after the `chart` has been fully rendered (and animation completed). Note
* that this hook will not be called if the rendering has been previously cancelled.
* @param {Chart.Controller} chart - The chart instance.
* @param {Object} options - The plugin options.
*/
/**
* @method IPlugin#beforeDraw
* @desc Called before drawing `chart` at every animation frame specified by the given
* easing value. If any plugin returns `false`, the frame drawing is cancelled until
* another `render` is triggered.
* @param {Chart.Controller} chart - The chart instance.
* @param {Number} easingValue - The current animation value, between 0.0 and 1.0.
* @param {Object} options - The plugin options.
* @returns {Boolean} `false` to cancel the chart drawing.
*/
/**
* @method IPlugin#afterDraw
* @desc Called after the `chart` has been drawn for the specific easing value. Note
* that this hook will not be called if the drawing has been previously cancelled.
* @param {Chart.Controller} chart - The chart instance.
* @param {Number} easingValue - The current animation value, between 0.0 and 1.0.
* @param {Object} options - The plugin options.
*/
/**
* @method IPlugin#beforeDatasetsDraw
* @desc Called before drawing the `chart` datasets. If any plugin returns `false`,
* the datasets drawing is cancelled until another `render` is triggered.
* @param {Chart.Controller} chart - The chart instance.
* @param {Number} easingValue - The current animation value, between 0.0 and 1.0.
* @param {Object} options - The plugin options.
* @returns {Boolean} `false` to cancel the chart datasets drawing.
*/
/**
* @method IPlugin#afterDatasetsDraw
* @desc Called after the `chart` datasets have been drawn. Note that this hook
* will not be called if the datasets drawing has been previously cancelled.
* @param {Chart.Controller} chart - The chart instance.
* @param {Number} easingValue - The current animation value, between 0.0 and 1.0.
* @param {Object} options - The plugin options.
*/
/**
* @method IPlugin#beforeEvent
* @desc Called before processing the specified `event`. If any plugin returns `false`,
* the event will be discarded.
* @param {Chart.Controller} chart - The chart instance.
* @param {IEvent} event - The event object.
* @param {Object} options - The plugin options.
*/
/**
* @method IPlugin#afterEvent
* @desc Called after the `event` has been consumed. Note that this hook
* will not be called if the `event` has been previously discarded.
* @param {Chart.Controller} chart - The chart instance.
* @param {IEvent} event - The event object.
* @param {Object} options - The plugin options.
*/
/**
* @method IPlugin#resize
* @desc Called after the chart as been resized.
* @param {Chart.Controller} chart - The chart instance.
* @param {Number} size - The new canvas display size (eq. canvas.style width & height).
* @param {Object} options - The plugin options.
*/
/**
* @method IPlugin#destroy
* @desc Called after the chart as been destroyed.
* @param {Chart.Controller} chart - The chart instance.
* @param {Object} options - The plugin options.
*/
/**
* Provided for backward compatibility, use Chart.plugins instead
* @namespace Chart.pluginService
* @deprecated since version 2.1.5
* @todo remove at version 3
* @private
*/
Chart.pluginService = Chart.plugins;
/**
* Provided for backward compatibility, inheriting from Chart.PlugingBase has no
* effect, instead simply create/register plugins via plain JavaScript objects.
* @interface Chart.PluginBase
* @deprecated since version 2.5.0
* @todo remove at version 3
* @private
*/
Chart.PluginBase = helpers.inherits({});
};
},{}],32:[function(require,module,exports){
'use strict';
module.exports = function(Chart) {
var helpers = Chart.helpers;
Chart.defaults.scale = {
display: true,
position: 'left',
// grid line settings
gridLines: {
display: true,
color: 'rgba(0, 0, 0, 0.1)',
lineWidth: 1,
drawBorder: true,
drawOnChartArea: true,
drawTicks: true,
tickMarkLength: 10,
zeroLineWidth: 1,
zeroLineColor: 'rgba(0,0,0,0.25)',
offsetGridLines: false,
borderDash: [],
borderDashOffset: 0.0
},
// scale label
scaleLabel: {
// actual label
labelString: '',
// display property
display: false
},
// label settings
ticks: {
beginAtZero: false,
minRotation: 0,
maxRotation: 50,
mirror: false,
padding: 0,
reverse: false,
display: true,
autoSkip: true,
autoSkipPadding: 0,
labelOffset: 0,
// We pass through arrays to be rendered as multiline labels, we convert Others to strings here.
callback: Chart.Ticks.formatters.values
}
};
function computeTextSize(context, tick, font) {
return helpers.isArray(tick) ?
helpers.longestText(context, font, tick) :
context.measureText(tick).width;
}
function parseFontOptions(options) {
var getValueOrDefault = helpers.getValueOrDefault;
var globalDefaults = Chart.defaults.global;
var size = getValueOrDefault(options.fontSize, globalDefaults.defaultFontSize);
var style = getValueOrDefault(options.fontStyle, globalDefaults.defaultFontStyle);
var family = getValueOrDefault(options.fontFamily, globalDefaults.defaultFontFamily);
return {
size: size,
style: style,
family: family,
font: helpers.fontString(size, style, family)
};
}
Chart.Scale = Chart.Element.extend({
/**
* Get the padding needed for the scale
* @method getPadding
* @private
* @returns {Padding} the necessary padding
*/
getPadding: function() {
var me = this;
return {
left: me.paddingLeft || 0,
top: me.paddingTop || 0,
right: me.paddingRight || 0,
bottom: me.paddingBottom || 0
};
},
// These methods are ordered by lifecyle. Utilities then follow.
// Any function defined here is inherited by all scale types.
// Any function can be extended by the scale type
beforeUpdate: function() {
helpers.callCallback(this.options.beforeUpdate, [this]);
},
update: function(maxWidth, maxHeight, margins) {
var me = this;
// Update Lifecycle - Probably don't want to ever extend or overwrite this function ;)
me.beforeUpdate();
// Absorb the master measurements
me.maxWidth = maxWidth;
me.maxHeight = maxHeight;
me.margins = helpers.extend({
left: 0,
right: 0,
top: 0,
bottom: 0
}, margins);
me.longestTextCache = me.longestTextCache || {};
// Dimensions
me.beforeSetDimensions();
me.setDimensions();
me.afterSetDimensions();
// Data min/max
me.beforeDataLimits();
me.determineDataLimits();
me.afterDataLimits();
// Ticks
me.beforeBuildTicks();
me.buildTicks();
me.afterBuildTicks();
me.beforeTickToLabelConversion();
me.convertTicksToLabels();
me.afterTickToLabelConversion();
// Tick Rotation
me.beforeCalculateTickRotation();
me.calculateTickRotation();
me.afterCalculateTickRotation();
// Fit
me.beforeFit();
me.fit();
me.afterFit();
//
me.afterUpdate();
return me.minSize;
},
afterUpdate: function() {
helpers.callCallback(this.options.afterUpdate, [this]);
},
//
beforeSetDimensions: function() {
helpers.callCallback(this.options.beforeSetDimensions, [this]);
},
setDimensions: function() {
var me = this;
// Set the unconstrained dimension before label rotation
if (me.isHorizontal()) {
// Reset position before calculating rotation
me.width = me.maxWidth;
me.left = 0;
me.right = me.width;
} else {
me.height = me.maxHeight;
// Reset position before calculating rotation
me.top = 0;
me.bottom = me.height;
}
// Reset padding
me.paddingLeft = 0;
me.paddingTop = 0;
me.paddingRight = 0;
me.paddingBottom = 0;
},
afterSetDimensions: function() {
helpers.callCallback(this.options.afterSetDimensions, [this]);
},
// Data limits
beforeDataLimits: function() {
helpers.callCallback(this.options.beforeDataLimits, [this]);
},
determineDataLimits: helpers.noop,
afterDataLimits: function() {
helpers.callCallback(this.options.afterDataLimits, [this]);
},
//
beforeBuildTicks: function() {
helpers.callCallback(this.options.beforeBuildTicks, [this]);
},
buildTicks: helpers.noop,
afterBuildTicks: function() {
helpers.callCallback(this.options.afterBuildTicks, [this]);
},
beforeTickToLabelConversion: function() {
helpers.callCallback(this.options.beforeTickToLabelConversion, [this]);
},
convertTicksToLabels: function() {
var me = this;
// Convert ticks to strings
var tickOpts = me.options.ticks;
me.ticks = me.ticks.map(tickOpts.userCallback || tickOpts.callback);
},
afterTickToLabelConversion: function() {
helpers.callCallback(this.options.afterTickToLabelConversion, [this]);
},
//
beforeCalculateTickRotation: function() {
helpers.callCallback(this.options.beforeCalculateTickRotation, [this]);
},
calculateTickRotation: function() {
var me = this;
var context = me.ctx;
var tickOpts = me.options.ticks;
// Get the width of each grid by calculating the difference
// between x offsets between 0 and 1.
var tickFont = parseFontOptions(tickOpts);
context.font = tickFont.font;
var labelRotation = tickOpts.minRotation || 0;
if (me.options.display && me.isHorizontal()) {
var originalLabelWidth = helpers.longestText(context, tickFont.font, me.ticks, me.longestTextCache);
var labelWidth = originalLabelWidth;
var cosRotation;
var sinRotation;
// Allow 3 pixels x2 padding either side for label readability
var tickWidth = me.getPixelForTick(1) - me.getPixelForTick(0) - 6;
// Max label rotation can be set or default to 90 - also act as a loop counter
while (labelWidth > tickWidth && labelRotation < tickOpts.maxRotation) {
var angleRadians = helpers.toRadians(labelRotation);
cosRotation = Math.cos(angleRadians);
sinRotation = Math.sin(angleRadians);
if (sinRotation * originalLabelWidth > me.maxHeight) {
// go back one step
labelRotation--;
break;
}
labelRotation++;
labelWidth = cosRotation * originalLabelWidth;
}
}
me.labelRotation = labelRotation;
},
afterCalculateTickRotation: function() {
helpers.callCallback(this.options.afterCalculateTickRotation, [this]);
},
//
beforeFit: function() {
helpers.callCallback(this.options.beforeFit, [this]);
},
fit: function() {
var me = this;
// Reset
var minSize = me.minSize = {
width: 0,
height: 0
};
var opts = me.options;
var tickOpts = opts.ticks;
var scaleLabelOpts = opts.scaleLabel;
var gridLineOpts = opts.gridLines;
var display = opts.display;
var isHorizontal = me.isHorizontal();
var tickFont = parseFontOptions(tickOpts);
var scaleLabelFontSize = parseFontOptions(scaleLabelOpts).size * 1.5;
var tickMarkLength = opts.gridLines.tickMarkLength;
// Width
if (isHorizontal) {
// subtract the margins to line up with the chartArea if we are a full width scale
minSize.width = me.isFullWidth() ? me.maxWidth - me.margins.left - me.margins.right : me.maxWidth;
} else {
minSize.width = display && gridLineOpts.drawTicks ? tickMarkLength : 0;
}
// height
if (isHorizontal) {
minSize.height = display && gridLineOpts.drawTicks ? tickMarkLength : 0;
} else {
minSize.height = me.maxHeight; // fill all the height
}
// Are we showing a title for the scale?
if (scaleLabelOpts.display && display) {
if (isHorizontal) {
minSize.height += scaleLabelFontSize;
} else {
minSize.width += scaleLabelFontSize;
}
}
// Don't bother fitting the ticks if we are not showing them
if (tickOpts.display && display) {
var largestTextWidth = helpers.longestText(me.ctx, tickFont.font, me.ticks, me.longestTextCache);
var tallestLabelHeightInLines = helpers.numberOfLabelLines(me.ticks);
var lineSpace = tickFont.size * 0.5;
if (isHorizontal) {
// A horizontal axis is more constrained by the height.
me.longestLabelWidth = largestTextWidth;
var angleRadians = helpers.toRadians(me.labelRotation);
var cosRotation = Math.cos(angleRadians);
var sinRotation = Math.sin(angleRadians);
// TODO - improve this calculation
var labelHeight = (sinRotation * largestTextWidth)
+ (tickFont.size * tallestLabelHeightInLines)
+ (lineSpace * tallestLabelHeightInLines);
minSize.height = Math.min(me.maxHeight, minSize.height + labelHeight);
me.ctx.font = tickFont.font;
var firstTick = me.ticks[0];
var firstLabelWidth = computeTextSize(me.ctx, firstTick, tickFont.font);
var lastTick = me.ticks[me.ticks.length - 1];
var lastLabelWidth = computeTextSize(me.ctx, lastTick, tickFont.font);
// Ensure that our ticks are always inside the canvas. When rotated, ticks are right aligned which means that the right padding is dominated
// by the font height
if (me.labelRotation !== 0) {
me.paddingLeft = opts.position === 'bottom'? (cosRotation * firstLabelWidth) + 3: (cosRotation * lineSpace) + 3; // add 3 px to move away from canvas edges
me.paddingRight = opts.position === 'bottom'? (cosRotation * lineSpace) + 3: (cosRotation * lastLabelWidth) + 3;
} else {
me.paddingLeft = firstLabelWidth / 2 + 3; // add 3 px to move away from canvas edges
me.paddingRight = lastLabelWidth / 2 + 3;
}
} else {
// A vertical axis is more constrained by the width. Labels are the dominant factor here, so get that length first
// Account for padding
if (tickOpts.mirror) {
largestTextWidth = 0;
} else {
largestTextWidth += me.options.ticks.padding;
}
minSize.width += largestTextWidth;
me.paddingTop = tickFont.size / 2;
me.paddingBottom = tickFont.size / 2;
}
}
me.handleMargins();
me.width = minSize.width;
me.height = minSize.height;
},
/**
* Handle margins and padding interactions
* @private
*/
handleMargins: function() {
var me = this;
if (me.margins) {
me.paddingLeft = Math.max(me.paddingLeft - me.margins.left, 0);
me.paddingTop = Math.max(me.paddingTop - me.margins.top, 0);
me.paddingRight = Math.max(me.paddingRight - me.margins.right, 0);
me.paddingBottom = Math.max(me.paddingBottom - me.margins.bottom, 0);
}
},
afterFit: function() {
helpers.callCallback(this.options.afterFit, [this]);
},
// Shared Methods
isHorizontal: function() {
return this.options.position === 'top' || this.options.position === 'bottom';
},
isFullWidth: function() {
return (this.options.fullWidth);
},
// 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
getRightValue: function(rawValue) {
// Null and undefined values first
if (rawValue === null || typeof(rawValue) === 'undefined') {
return NaN;
}
// isNaN(object) returns true, so make sure NaN is checking for a number; Discard Infinite values
if (typeof(rawValue) === 'number' && !isFinite(rawValue)) {
return NaN;
}
// If it is in fact an object, dive in one more level
if (typeof(rawValue) === 'object') {
if ((rawValue instanceof Date) || (rawValue.isValid)) {
return rawValue;
}
return this.getRightValue(this.isHorizontal() ? rawValue.x : rawValue.y);
}
// Value is good, return it
return rawValue;
},
// Used to get the value to display in the tooltip for the data at the given index
// function getLabelForIndex(index, datasetIndex)
getLabelForIndex: helpers.noop,
// Used to get data value locations. Value can either be an index or a numerical value
getPixelForValue: helpers.noop,
// Used to get the data value from a given pixel. This is the inverse of getPixelForValue
getValueForPixel: helpers.noop,
// Used for tick location, should
getPixelForTick: function(index, includeOffset) {
var me = this;
if (me.isHorizontal()) {
var innerWidth = me.width - (me.paddingLeft + me.paddingRight);
var tickWidth = innerWidth / Math.max((me.ticks.length - ((me.options.gridLines.offsetGridLines) ? 0 : 1)), 1);
var pixel = (tickWidth * index) + me.paddingLeft;
if (includeOffset) {
pixel += tickWidth / 2;
}
var finalVal = me.left + Math.round(pixel);
finalVal += me.isFullWidth() ? me.margins.left : 0;
return finalVal;
}
var innerHeight = me.height - (me.paddingTop + me.paddingBottom);
return me.top + (index * (innerHeight / (me.ticks.length - 1)));
},
// Utility for getting the pixel location of a percentage of scale
getPixelForDecimal: function(decimal /* , includeOffset*/) {
var me = this;
if (me.isHorizontal()) {
var innerWidth = me.width - (me.paddingLeft + me.paddingRight);
var valueOffset = (innerWidth * decimal) + me.paddingLeft;
var finalVal = me.left + Math.round(valueOffset);
finalVal += me.isFullWidth() ? me.margins.left : 0;
return finalVal;
}
return me.top + (decimal * me.height);
},
getBasePixel: function() {
return this.getPixelForValue(this.getBaseValue());
},
getBaseValue: function() {
var me = this;
var min = me.min;
var max = me.max;
return me.beginAtZero ? 0:
min < 0 && max < 0? max :
min > 0 && max > 0? min :
0;
},
// Actually draw the scale on the canvas
// @param {rectangle} chartArea : the area of the chart to draw full grid lines on
draw: function(chartArea) {
var me = this;
var options = me.options;
if (!options.display) {
return;
}
var context = me.ctx;
var globalDefaults = Chart.defaults.global;
var optionTicks = options.ticks;
var gridLines = options.gridLines;
var scaleLabel = options.scaleLabel;
var isRotated = me.labelRotation !== 0;
var skipRatio;
var useAutoskipper = optionTicks.autoSkip;
var isHorizontal = me.isHorizontal();
// figure out the maximum number of gridlines to show
var maxTicks;
if (optionTicks.maxTicksLimit) {
maxTicks = optionTicks.maxTicksLimit;
}
var tickFontColor = helpers.getValueOrDefault(optionTicks.fontColor, globalDefaults.defaultFontColor);
var tickFont = parseFontOptions(optionTicks);
var tl = gridLines.drawTicks ? gridLines.tickMarkLength : 0;
var borderDash = helpers.getValueOrDefault(gridLines.borderDash, globalDefaults.borderDash);
var borderDashOffset = helpers.getValueOrDefault(gridLines.borderDashOffset, globalDefaults.borderDashOffset);
var scaleLabelFontColor = helpers.getValueOrDefault(scaleLabel.fontColor, globalDefaults.defaultFontColor);
var scaleLabelFont = parseFontOptions(scaleLabel);
var labelRotationRadians = helpers.toRadians(me.labelRotation);
var cosRotation = Math.cos(labelRotationRadians);
var longestRotatedLabel = me.longestLabelWidth * cosRotation;
// Make sure we draw text in the correct color and font
context.fillStyle = tickFontColor;
var itemsToDraw = [];
if (isHorizontal) {
skipRatio = false;
// Only calculate the skip ratio with the half width of longestRotateLabel if we got an actual rotation
// See #2584
if (isRotated) {
longestRotatedLabel /= 2;
}
if ((longestRotatedLabel + optionTicks.autoSkipPadding) * me.ticks.length > (me.width - (me.paddingLeft + me.paddingRight))) {
skipRatio = 1 + Math.floor(((longestRotatedLabel + optionTicks.autoSkipPadding) * me.ticks.length) / (me.width - (me.paddingLeft + me.paddingRight)));
}
// if they defined a max number of optionTicks,
// increase skipRatio until that number is met
if (maxTicks && me.ticks.length > maxTicks) {
while (!skipRatio || me.ticks.length / (skipRatio || 1) > maxTicks) {
if (!skipRatio) {
skipRatio = 1;
}
skipRatio += 1;
}
}
if (!useAutoskipper) {
skipRatio = false;
}
}
var xTickStart = options.position === 'right' ? me.left : me.right - tl;
var xTickEnd = options.position === 'right' ? me.left + tl : me.right;
var yTickStart = options.position === 'bottom' ? me.top : me.bottom - tl;
var yTickEnd = options.position === 'bottom' ? me.top + tl : me.bottom;
helpers.each(me.ticks, function(label, index) {
// If the callback returned a null or undefined value, do not draw this line
if (label === undefined || label === null) {
return;
}
var isLastTick = me.ticks.length === index + 1;
// Since we always show the last tick,we need may need to hide the last shown one before
var shouldSkip = (skipRatio > 1 && index % skipRatio > 0) || (index % skipRatio === 0 && index + skipRatio >= me.ticks.length);
if (shouldSkip && !isLastTick || (label === undefined || label === null)) {
return;
}
var lineWidth, lineColor;
if (index === (typeof me.zeroLineIndex !== 'undefined' ? me.zeroLineIndex : 0)) {
// Draw the first index specially
lineWidth = gridLines.zeroLineWidth;
lineColor = gridLines.zeroLineColor;
} else {
lineWidth = helpers.getValueAtIndexOrDefault(gridLines.lineWidth, index);
lineColor = helpers.getValueAtIndexOrDefault(gridLines.color, index);
}
// Common properties
var tx1, ty1, tx2, ty2, x1, y1, x2, y2, labelX, labelY;
var textAlign = 'middle';
var textBaseline = 'middle';
if (isHorizontal) {
if (options.position === 'bottom') {
// bottom
textBaseline = !isRotated? 'top':'middle';
textAlign = !isRotated? 'center': 'right';
labelY = me.top + tl;
} else {
// top
textBaseline = !isRotated? 'bottom':'middle';
textAlign = !isRotated? 'center': 'left';
labelY = me.bottom - tl;
}
var xLineValue = me.getPixelForTick(index) + helpers.aliasPixel(lineWidth); // xvalues for grid lines
labelX = me.getPixelForTick(index, gridLines.offsetGridLines) + optionTicks.labelOffset; // x values for optionTicks (need to consider offsetLabel option)
tx1 = tx2 = x1 = x2 = xLineValue;
ty1 = yTickStart;
ty2 = yTickEnd;
y1 = chartArea.top;
y2 = chartArea.bottom;
} else {
var isLeft = options.position === 'left';
var tickPadding = optionTicks.padding;
var labelXOffset;
if (optionTicks.mirror) {
textAlign = isLeft ? 'left' : 'right';
labelXOffset = tickPadding;
} else {
textAlign = isLeft ? 'right' : 'left';
labelXOffset = tl + tickPadding;
}
labelX = isLeft ? me.right - labelXOffset : me.left + labelXOffset;
var yLineValue = me.getPixelForTick(index); // xvalues for grid lines
yLineValue += helpers.aliasPixel(lineWidth);
labelY = me.getPixelForTick(index, gridLines.offsetGridLines);
tx1 = xTickStart;
tx2 = xTickEnd;
x1 = chartArea.left;
x2 = chartArea.right;
ty1 = ty2 = y1 = y2 = yLineValue;
}
itemsToDraw.push({
tx1: tx1,
ty1: ty1,
tx2: tx2,
ty2: ty2,
x1: x1,
y1: y1,
x2: x2,
y2: y2,
labelX: labelX,
labelY: labelY,
glWidth: lineWidth,
glColor: lineColor,
glBorderDash: borderDash,
glBorderDashOffset: borderDashOffset,
rotation: -1 * labelRotationRadians,
label: label,
textBaseline: textBaseline,
textAlign: textAlign
});
});
// Draw all of the tick labels, tick marks, and grid lines at the correct places
helpers.each(itemsToDraw, function(itemToDraw) {
if (gridLines.display) {
context.save();
context.lineWidth = itemToDraw.glWidth;
context.strokeStyle = itemToDraw.glColor;
if (context.setLineDash) {
context.setLineDash(itemToDraw.glBorderDash);
context.lineDashOffset = itemToDraw.glBorderDashOffset;
}
context.beginPath();
if (gridLines.drawTicks) {
context.moveTo(itemToDraw.tx1, itemToDraw.ty1);
context.lineTo(itemToDraw.tx2, itemToDraw.ty2);
}
if (gridLines.drawOnChartArea) {
context.moveTo(itemToDraw.x1, itemToDraw.y1);
context.lineTo(itemToDraw.x2, itemToDraw.y2);
}
context.stroke();
context.restore();
}
if (optionTicks.display) {
context.save();
context.translate(itemToDraw.labelX, itemToDraw.labelY);
context.rotate(itemToDraw.rotation);
context.font = tickFont.font;
context.textBaseline = itemToDraw.textBaseline;
context.textAlign = itemToDraw.textAlign;
var label = itemToDraw.label;
if (helpers.isArray(label)) {
for (var i = 0, y = 0; i < label.length; ++i) {
// We just make sure the multiline element is a string here..
context.fillText('' + label[i], 0, y);
// apply same lineSpacing as calculated @ L#320
y += (tickFont.size * 1.5);
}
} else {
context.fillText(label, 0, 0);
}
context.restore();
}
});
if (scaleLabel.display) {
// Draw the scale label
var scaleLabelX;
var scaleLabelY;
var rotation = 0;
if (isHorizontal) {
scaleLabelX = me.left + ((me.right - me.left) / 2); // midpoint of the width
scaleLabelY = options.position === 'bottom' ? me.bottom - (scaleLabelFont.size / 2) : me.top + (scaleLabelFont.size / 2);
} else {
var isLeft = options.position === 'left';
scaleLabelX = isLeft ? me.left + (scaleLabelFont.size / 2) : me.right - (scaleLabelFont.size / 2);
scaleLabelY = me.top + ((me.bottom - me.top) / 2);
rotation = isLeft ? -0.5 * Math.PI : 0.5 * Math.PI;
}
context.save();
context.translate(scaleLabelX, scaleLabelY);
context.rotate(rotation);
context.textAlign = 'center';
context.textBaseline = 'middle';
context.fillStyle = scaleLabelFontColor; // render in correct colour
context.font = scaleLabelFont.font;
context.fillText(scaleLabel.labelString, 0, 0);
context.restore();
}
if (gridLines.drawBorder) {
// Draw the line at the edge of the axis
context.lineWidth = helpers.getValueAtIndexOrDefault(gridLines.lineWidth, 0);
context.strokeStyle = helpers.getValueAtIndexOrDefault(gridLines.color, 0);
var x1 = me.left,
x2 = me.right,
y1 = me.top,
y2 = me.bottom;
var aliasPixel = helpers.aliasPixel(context.lineWidth);
if (isHorizontal) {
y1 = y2 = options.position === 'top' ? me.bottom : me.top;
y1 += aliasPixel;
y2 += aliasPixel;
} else {
x1 = x2 = options.position === 'left' ? me.right : me.left;
x1 += aliasPixel;
x2 += aliasPixel;
}
context.beginPath();
context.moveTo(x1, y1);
context.lineTo(x2, y2);
context.stroke();
}
}
});
};
},{}],33:[function(require,module,exports){
'use strict';
module.exports = function(Chart) {
var helpers = Chart.helpers;
Chart.scaleService = {
// Scale registration object. Extensions can register new scale types (such as log or DB scales) and then
// use the new chart options to grab the correct scale
constructors: {},
// Use a registration function so that we can move to an ES6 map when we no longer need to support
// old browsers
// Scale config defaults
defaults: {},
registerScaleType: function(type, scaleConstructor, defaults) {
this.constructors[type] = scaleConstructor;
this.defaults[type] = helpers.clone(defaults);
},
getScaleConstructor: function(type) {
return this.constructors.hasOwnProperty(type) ? this.constructors[type] : undefined;
},
getScaleDefaults: function(type) {
// Return the scale defaults merged with the global settings so that we always use the latest ones
return this.defaults.hasOwnProperty(type) ? helpers.scaleMerge(Chart.defaults.scale, this.defaults[type]) : {};
},
updateScaleDefaults: function(type, additions) {
var defaults = this.defaults;
if (defaults.hasOwnProperty(type)) {
defaults[type] = helpers.extend(defaults[type], additions);
}
},
addScalesToLayout: function(chartInstance) {
// Adds each scale to the chart.boxes array to be sized accordingly
helpers.each(chartInstance.scales, function(scale) {
Chart.layoutService.addBox(chartInstance, scale);
});
}
};
};
},{}],34:[function(require,module,exports){
'use strict';
module.exports = function(Chart) {
var helpers = Chart.helpers;
/**
* Namespace to hold static tick generation functions
* @namespace Chart.Ticks
*/
Chart.Ticks = {
/**
* Namespace to hold generators for different types of ticks
* @namespace Chart.Ticks.generators
*/
generators: {
/**
* Interface for the options provided to the numeric tick generator
* @interface INumericTickGenerationOptions
*/
/**
* The maximum number of ticks to display
* @name INumericTickGenerationOptions#maxTicks
* @type Number
*/
/**
* The distance between each tick.
* @name INumericTickGenerationOptions#stepSize
* @type Number
* @optional
*/
/**
* Forced minimum for the ticks. If not specified, the minimum of the data range is used to calculate the tick minimum
* @name INumericTickGenerationOptions#min
* @type Number
* @optional
*/
/**
* The maximum value of the ticks. If not specified, the maximum of the data range is used to calculate the tick maximum
* @name INumericTickGenerationOptions#max
* @type Number
* @optional
*/
/**
* Generate a set of linear ticks
* @method Chart.Ticks.generators.linear
* @param generationOptions {INumericTickGenerationOptions} the options used to generate the ticks
* @param dataRange {IRange} the range of the data
* @returns {Array<Number>} array of tick values
*/
linear: function(generationOptions, dataRange) {
var ticks = [];
// To get a "nice" value for the tick spacing, we will use the appropriately named
// "nice number" algorithm. See http://stackoverflow.com/questions/8506881/nice-label-algorithm-for-charts-with-minimum-ticks
// for details.
var spacing;
if (generationOptions.stepSize && generationOptions.stepSize > 0) {
spacing = generationOptions.stepSize;
} else {
var niceRange = helpers.niceNum(dataRange.max - dataRange.min, false);
spacing = helpers.niceNum(niceRange / (generationOptions.maxTicks - 1), true);
}
var niceMin = Math.floor(dataRange.min / spacing) * spacing;
var niceMax = Math.ceil(dataRange.max / spacing) * spacing;
// If min, max and stepSize is set and they make an evenly spaced scale use it.
if (generationOptions.min && generationOptions.max && generationOptions.stepSize) {
// If very close to our whole number, use it.
if (helpers.almostWhole((generationOptions.max - generationOptions.min) / generationOptions.stepSize, spacing / 1000)) {
niceMin = generationOptions.min;
niceMax = generationOptions.max;
}
}
var numSpaces = (niceMax - niceMin) / spacing;
// If very close to our rounded value, use it.
if (helpers.almostEquals(numSpaces, Math.round(numSpaces), spacing / 1000)) {
numSpaces = Math.round(numSpaces);
} else {
numSpaces = Math.ceil(numSpaces);
}
// Put the values into the ticks array
ticks.push(generationOptions.min !== undefined ? generationOptions.min : niceMin);
for (var j = 1; j < numSpaces; ++j) {
ticks.push(niceMin + (j * spacing));
}
ticks.push(generationOptions.max !== undefined ? generationOptions.max : niceMax);
return ticks;
},
/**
* Generate a set of logarithmic ticks
* @method Chart.Ticks.generators.logarithmic
* @param generationOptions {INumericTickGenerationOptions} the options used to generate the ticks
* @param dataRange {IRange} the range of the data
* @returns {Array<Number>} array of tick values
*/
logarithmic: function(generationOptions, dataRange) {
var ticks = [];
var getValueOrDefault = helpers.getValueOrDefault;
// Figure out what the max number of ticks we can support it is based on the size of
// the axis area. For now, we say that the minimum tick spacing in pixels must be 50
// We also limit the maximum number of ticks to 11 which gives a nice 10 squares on
// the graph
var tickVal = getValueOrDefault(generationOptions.min, Math.pow(10, Math.floor(helpers.log10(dataRange.min))));
var endExp = Math.floor(helpers.log10(dataRange.max));
var endSignificand = Math.ceil(dataRange.max / Math.pow(10, endExp));
var exp;
var significand;
if (tickVal === 0) {
exp = Math.floor(helpers.log10(dataRange.minNotZero));
significand = Math.floor(dataRange.minNotZero / Math.pow(10, exp));
ticks.push(tickVal);
tickVal = significand * Math.pow(10, exp);
} else {
exp = Math.floor(helpers.log10(tickVal));
significand = Math.floor(tickVal / Math.pow(10, exp));
}
do {
ticks.push(tickVal);
++significand;
if (significand === 10) {
significand = 1;
++exp;
}
tickVal = significand * Math.pow(10, exp);
} while (exp < endExp || (exp === endExp && significand < endSignificand));
var lastTick = getValueOrDefault(generationOptions.max, tickVal);
ticks.push(lastTick);
return ticks;
}
},
/**
* Namespace to hold formatters for different types of ticks
* @namespace Chart.Ticks.formatters
*/
formatters: {
/**
* Formatter for value labels
* @method Chart.Ticks.formatters.values
* @param value the value to display
* @return {String|Array} the label to display
*/
values: function(value) {
return helpers.isArray(value) ? value : '' + value;
},
/**
* Formatter for linear numeric ticks
* @method Chart.Ticks.formatters.linear
* @param tickValue {Number} the value to be formatted
* @param index {Number} the position of the tickValue parameter in the ticks array
* @param ticks {Array<Number>} the list of ticks being converted
* @return {String} string representation of the tickValue parameter
*/
linear: function(tickValue, index, ticks) {
// If we have lots of ticks, don't use the ones
var delta = ticks.length > 3 ? ticks[2] - ticks[1] : ticks[1] - ticks[0];
// If we have a number like 2.5 as the delta, figure out how many decimal places we need
if (Math.abs(delta) > 1) {
if (tickValue !== Math.floor(tickValue)) {
// not an integer
delta = tickValue - Math.floor(tickValue);
}
}
var logDelta = helpers.log10(Math.abs(delta));
var tickString = '';
if (tickValue !== 0) {
var numDecimal = -1 * Math.floor(logDelta);
numDecimal = Math.max(Math.min(numDecimal, 20), 0); // toFixed has a max of 20 decimal places
tickString = tickValue.toFixed(numDecimal);
} else {
tickString = '0'; // never show decimal places for 0
}
return tickString;
},
logarithmic: function(tickValue, index, ticks) {
var remain = tickValue / (Math.pow(10, Math.floor(helpers.log10(tickValue))));
if (tickValue === 0) {
return '0';
} else if (remain === 1 || remain === 2 || remain === 5 || index === 0 || index === ticks.length - 1) {
return tickValue.toExponential();
}
return '';
}
}
};
};
},{}],35:[function(require,module,exports){
'use strict';
module.exports = function(Chart) {
var helpers = Chart.helpers;
Chart.defaults.global.title = {
display: false,
position: 'top',
fullWidth: true, // marks that this box should take the full width of the canvas (pushing down other boxes)
fontStyle: 'bold',
padding: 10,
// actual title
text: ''
};
var noop = helpers.noop;
Chart.Title = Chart.Element.extend({
initialize: function(config) {
var me = this;
helpers.extend(me, config);
// Contains hit boxes for each dataset (in dataset order)
me.legendHitBoxes = [];
},
// These methods are ordered by lifecycle. Utilities then follow.
beforeUpdate: noop,
update: function(maxWidth, maxHeight, margins) {
var me = this;
// Update Lifecycle - Probably don't want to ever extend or overwrite this function ;)
me.beforeUpdate();
// Absorb the master measurements
me.maxWidth = maxWidth;
me.maxHeight = maxHeight;
me.margins = margins;
// Dimensions
me.beforeSetDimensions();
me.setDimensions();
me.afterSetDimensions();
// Labels
me.beforeBuildLabels();
me.buildLabels();
me.afterBuildLabels();
// Fit
me.beforeFit();
me.fit();
me.afterFit();
//
me.afterUpdate();
return me.minSize;
},
afterUpdate: noop,
//
beforeSetDimensions: noop,
setDimensions: function() {
var me = this;
// Set the unconstrained dimension before label rotation
if (me.isHorizontal()) {
// Reset position before calculating rotation
me.width = me.maxWidth;
me.left = 0;
me.right = me.width;
} else {
me.height = me.maxHeight;
// Reset position before calculating rotation
me.top = 0;
me.bottom = me.height;
}
// Reset padding
me.paddingLeft = 0;
me.paddingTop = 0;
me.paddingRight = 0;
me.paddingBottom = 0;
// Reset minSize
me.minSize = {
width: 0,
height: 0
};
},
afterSetDimensions: noop,
//
beforeBuildLabels: noop,
buildLabels: noop,
afterBuildLabels: noop,
//
beforeFit: noop,
fit: function() {
var me = this,
valueOrDefault = helpers.getValueOrDefault,
opts = me.options,
globalDefaults = Chart.defaults.global,
display = opts.display,
fontSize = valueOrDefault(opts.fontSize, globalDefaults.defaultFontSize),
minSize = me.minSize;
if (me.isHorizontal()) {
minSize.width = me.maxWidth; // fill all the width
minSize.height = display ? fontSize + (opts.padding * 2) : 0;
} else {
minSize.width = display ? fontSize + (opts.padding * 2) : 0;
minSize.height = me.maxHeight; // fill all the height
}
me.width = minSize.width;
me.height = minSize.height;
},
afterFit: noop,
// Shared Methods
isHorizontal: function() {
var pos = this.options.position;
return pos === 'top' || pos === 'bottom';
},
// Actually draw the title block on the canvas
draw: function() {
var me = this,
ctx = me.ctx,
valueOrDefault = helpers.getValueOrDefault,
opts = me.options,
globalDefaults = Chart.defaults.global;
if (opts.display) {
var fontSize = valueOrDefault(opts.fontSize, globalDefaults.defaultFontSize),
fontStyle = valueOrDefault(opts.fontStyle, globalDefaults.defaultFontStyle),
fontFamily = valueOrDefault(opts.fontFamily, globalDefaults.defaultFontFamily),
titleFont = helpers.fontString(fontSize, fontStyle, fontFamily),
rotation = 0,
titleX,
titleY,
top = me.top,
left = me.left,
bottom = me.bottom,
right = me.right,
maxWidth;
ctx.fillStyle = valueOrDefault(opts.fontColor, globalDefaults.defaultFontColor); // render in correct colour
ctx.font = titleFont;
// Horizontal
if (me.isHorizontal()) {
titleX = left + ((right - left) / 2); // midpoint of the width
titleY = top + ((bottom - top) / 2); // midpoint of the height
maxWidth = right - left;
} else {
titleX = opts.position === 'left' ? left + (fontSize / 2) : right - (fontSize / 2);
titleY = top + ((bottom - top) / 2);
maxWidth = bottom - top;
rotation = Math.PI * (opts.position === 'left' ? -0.5 : 0.5);
}
ctx.save();
ctx.translate(titleX, titleY);
ctx.rotate(rotation);
ctx.textAlign = 'center';
ctx.textBaseline = 'middle';
ctx.fillText(opts.text, 0, 0, maxWidth);
ctx.restore();
}
}
});
function createNewTitleBlockAndAttach(chartInstance, titleOpts) {
var title = new Chart.Title({
ctx: chartInstance.chart.ctx,
options: titleOpts,
chart: chartInstance
});
chartInstance.titleBlock = title;
Chart.layoutService.addBox(chartInstance, title);
}
// Register the title plugin
Chart.plugins.register({
beforeInit: function(chartInstance) {
var titleOpts = chartInstance.options.title;
if (titleOpts) {
createNewTitleBlockAndAttach(chartInstance, titleOpts);
}
},
beforeUpdate: function(chartInstance) {
var titleOpts = chartInstance.options.title;
if (titleOpts) {
titleOpts = helpers.configMerge(Chart.defaults.global.title, titleOpts);
if (chartInstance.titleBlock) {
chartInstance.titleBlock.options = titleOpts;
} else {
createNewTitleBlockAndAttach(chartInstance, titleOpts);
}
} else {
Chart.layoutService.removeBox(chartInstance, chartInstance.titleBlock);
delete chartInstance.titleBlock;
}
}
});
};
},{}],36:[function(require,module,exports){
'use strict';
module.exports = function(Chart) {
var helpers = Chart.helpers;
/**
* Helper method to merge the opacity into a color
*/
function mergeOpacity(colorString, opacity) {
var color = helpers.color(colorString);
return color.alpha(opacity * color.alpha()).rgbaString();
}
Chart.defaults.global.tooltips = {
enabled: true,
custom: null,
mode: 'nearest',
position: 'average',
intersect: true,
backgroundColor: 'rgba(0,0,0,0.8)',
titleFontStyle: 'bold',
titleSpacing: 2,
titleMarginBottom: 6,
titleFontColor: '#fff',
titleAlign: 'left',
bodySpacing: 2,
bodyFontColor: '#fff',
bodyAlign: 'left',
footerFontStyle: 'bold',
footerSpacing: 2,
footerMarginTop: 6,
footerFontColor: '#fff',
footerAlign: 'left',
yPadding: 6,
xPadding: 6,
caretSize: 5,
cornerRadius: 6,
multiKeyBackground: '#fff',
displayColors: true,
callbacks: {
// Args are: (tooltipItems, data)
beforeTitle: helpers.noop,
title: function(tooltipItems, data) {
// Pick first xLabel for now
var title = '';
var labels = data.labels;
var labelCount = labels ? labels.length : 0;
if (tooltipItems.length > 0) {
var item = tooltipItems[0];
if (item.xLabel) {
title = item.xLabel;
} else if (labelCount > 0 && item.index < labelCount) {
title = labels[item.index];
}
}
return title;
},
afterTitle: helpers.noop,
// Args are: (tooltipItems, data)
beforeBody: helpers.noop,
// Args are: (tooltipItem, data)
beforeLabel: helpers.noop,
label: function(tooltipItem, data) {
var datasetLabel = data.datasets[tooltipItem.datasetIndex].label || '';
return datasetLabel + ': ' + tooltipItem.yLabel;
},
labelColor: function(tooltipItem, chartInstance) {
var meta = chartInstance.getDatasetMeta(tooltipItem.datasetIndex);
var activeElement = meta.data[tooltipItem.index];
var view = activeElement._view;
return {
borderColor: view.borderColor,
backgroundColor: view.backgroundColor
};
},
afterLabel: helpers.noop,
// Args are: (tooltipItems, data)
afterBody: helpers.noop,
// Args are: (tooltipItems, data)
beforeFooter: helpers.noop,
footer: helpers.noop,
afterFooter: helpers.noop
}
};
// Helper to push or concat based on if the 2nd parameter is an array or not
function pushOrConcat(base, toPush) {
if (toPush) {
if (helpers.isArray(toPush)) {
// base = base.concat(toPush);
Array.prototype.push.apply(base, toPush);
} else {
base.push(toPush);
}
}
return base;
}
// Private helper to create a tooltip item model
// @param element : the chart element (point, arc, bar) to create the tooltip item for
// @return : new tooltip item
function createTooltipItem(element) {
var xScale = element._xScale;
var yScale = element._yScale || element._scale; // handle radar || polarArea charts
var index = element._index,
datasetIndex = element._datasetIndex;
return {
xLabel: xScale ? xScale.getLabelForIndex(index, datasetIndex) : '',
yLabel: yScale ? yScale.getLabelForIndex(index, datasetIndex) : '',
index: index,
datasetIndex: datasetIndex,
x: element._model.x,
y: element._model.y
};
}
/**
* Helper to get the reset model for the tooltip
* @param tooltipOpts {Object} the tooltip options
*/
function getBaseModel(tooltipOpts) {
var globalDefaults = Chart.defaults.global;
var getValueOrDefault = helpers.getValueOrDefault;
return {
// Positioning
xPadding: tooltipOpts.xPadding,
yPadding: tooltipOpts.yPadding,
xAlign: tooltipOpts.xAlign,
yAlign: tooltipOpts.yAlign,
// Body
bodyFontColor: tooltipOpts.bodyFontColor,
_bodyFontFamily: getValueOrDefault(tooltipOpts.bodyFontFamily, globalDefaults.defaultFontFamily),
_bodyFontStyle: getValueOrDefault(tooltipOpts.bodyFontStyle, globalDefaults.defaultFontStyle),
_bodyAlign: tooltipOpts.bodyAlign,
bodyFontSize: getValueOrDefault(tooltipOpts.bodyFontSize, globalDefaults.defaultFontSize),
bodySpacing: tooltipOpts.bodySpacing,
// Title
titleFontColor: tooltipOpts.titleFontColor,
_titleFontFamily: getValueOrDefault(tooltipOpts.titleFontFamily, globalDefaults.defaultFontFamily),
_titleFontStyle: getValueOrDefault(tooltipOpts.titleFontStyle, globalDefaults.defaultFontStyle),
titleFontSize: getValueOrDefault(tooltipOpts.titleFontSize, globalDefaults.defaultFontSize),
_titleAlign: tooltipOpts.titleAlign,
titleSpacing: tooltipOpts.titleSpacing,
titleMarginBottom: tooltipOpts.titleMarginBottom,
// Footer
footerFontColor: tooltipOpts.footerFontColor,
_footerFontFamily: getValueOrDefault(tooltipOpts.footerFontFamily, globalDefaults.defaultFontFamily),
_footerFontStyle: getValueOrDefault(tooltipOpts.footerFontStyle, globalDefaults.defaultFontStyle),
footerFontSize: getValueOrDefault(tooltipOpts.footerFontSize, globalDefaults.defaultFontSize),
_footerAlign: tooltipOpts.footerAlign,
footerSpacing: tooltipOpts.footerSpacing,
footerMarginTop: tooltipOpts.footerMarginTop,
// Appearance
caretSize: tooltipOpts.caretSize,
cornerRadius: tooltipOpts.cornerRadius,
backgroundColor: tooltipOpts.backgroundColor,
opacity: 0,
legendColorBackground: tooltipOpts.multiKeyBackground,
displayColors: tooltipOpts.displayColors
};
}
/**
* Get the size of the tooltip
*/
function getTooltipSize(tooltip, model) {
var ctx = tooltip._chart.ctx;
var height = model.yPadding * 2; // Tooltip Padding
var width = 0;
// Count of all lines in the body
var body = model.body;
var combinedBodyLength = body.reduce(function(count, bodyItem) {
return count + bodyItem.before.length + bodyItem.lines.length + bodyItem.after.length;
}, 0);
combinedBodyLength += model.beforeBody.length + model.afterBody.length;
var titleLineCount = model.title.length;
var footerLineCount = model.footer.length;
var titleFontSize = model.titleFontSize,
bodyFontSize = model.bodyFontSize,
footerFontSize = model.footerFontSize;
height += titleLineCount * titleFontSize; // Title Lines
height += titleLineCount ? (titleLineCount - 1) * model.titleSpacing : 0; // Title Line Spacing
height += titleLineCount ? model.titleMarginBottom : 0; // Title's bottom Margin
height += combinedBodyLength * bodyFontSize; // Body Lines
height += combinedBodyLength ? (combinedBodyLength - 1) * model.bodySpacing : 0; // Body Line Spacing
height += footerLineCount ? model.footerMarginTop : 0; // Footer Margin
height += footerLineCount * (footerFontSize); // Footer Lines
height += footerLineCount ? (footerLineCount - 1) * model.footerSpacing : 0; // Footer Line Spacing
// Title width
var widthPadding = 0;
var maxLineWidth = function(line) {
width = Math.max(width, ctx.measureText(line).width + widthPadding);
};
ctx.font = helpers.fontString(titleFontSize, model._titleFontStyle, model._titleFontFamily);
helpers.each(model.title, maxLineWidth);
// Body width
ctx.font = helpers.fontString(bodyFontSize, model._bodyFontStyle, model._bodyFontFamily);
helpers.each(model.beforeBody.concat(model.afterBody), maxLineWidth);
// Body lines may include some extra width due to the color box
widthPadding = model.displayColors ? (bodyFontSize + 2) : 0;
helpers.each(body, function(bodyItem) {
helpers.each(bodyItem.before, maxLineWidth);
helpers.each(bodyItem.lines, maxLineWidth);
helpers.each(bodyItem.after, maxLineWidth);
});
// Reset back to 0
widthPadding = 0;
// Footer width
ctx.font = helpers.fontString(footerFontSize, model._footerFontStyle, model._footerFontFamily);
helpers.each(model.footer, maxLineWidth);
// Add padding
width += 2 * model.xPadding;
return {
width: width,
height: height
};
}
/**
* Helper to get the alignment of a tooltip given the size
*/
function determineAlignment(tooltip, size) {
var model = tooltip._model;
var chart = tooltip._chart;
var chartArea = tooltip._chartInstance.chartArea;
var xAlign = 'center';
var yAlign = 'center';
if (model.y < size.height) {
yAlign = 'top';
} else if (model.y > (chart.height - size.height)) {
yAlign = 'bottom';
}
var lf, rf; // functions to determine left, right alignment
var olf, orf; // functions to determine if left/right alignment causes tooltip to go outside chart
var yf; // function to get the y alignment if the tooltip goes outside of the left or right edges
var midX = (chartArea.left + chartArea.right) / 2;
var midY = (chartArea.top + chartArea.bottom) / 2;
if (yAlign === 'center') {
lf = function(x) {
return x <= midX;
};
rf = function(x) {
return x > midX;
};
} else {
lf = function(x) {
return x <= (size.width / 2);
};
rf = function(x) {
return x >= (chart.width - (size.width / 2));
};
}
olf = function(x) {
return x + size.width > chart.width;
};
orf = function(x) {
return x - size.width < 0;
};
yf = function(y) {
return y <= midY ? 'top' : 'bottom';
};
if (lf(model.x)) {
xAlign = 'left';
// Is tooltip too wide and goes over the right side of the chart.?
if (olf(model.x)) {
xAlign = 'center';
yAlign = yf(model.y);
}
} else if (rf(model.x)) {
xAlign = 'right';
// Is tooltip too wide and goes outside left edge of canvas?
if (orf(model.x)) {
xAlign = 'center';
yAlign = yf(model.y);
}
}
var opts = tooltip._options;
return {
xAlign: opts.xAlign ? opts.xAlign : xAlign,
yAlign: opts.yAlign ? opts.yAlign : yAlign
};
}
/**
* @Helper to get the location a tooltip needs to be placed at given the initial position (via the vm) and the size and alignment
*/
function getBackgroundPoint(vm, size, alignment) {
// Background Position
var x = vm.x;
var y = vm.y;
var caretSize = vm.caretSize,
caretPadding = vm.caretPadding,
cornerRadius = vm.cornerRadius,
xAlign = alignment.xAlign,
yAlign = alignment.yAlign,
paddingAndSize = caretSize + caretPadding,
radiusAndPadding = cornerRadius + caretPadding;
if (xAlign === 'right') {
x -= size.width;
} else if (xAlign === 'center') {
x -= (size.width / 2);
}
if (yAlign === 'top') {
y += paddingAndSize;
} else if (yAlign === 'bottom') {
y -= size.height + paddingAndSize;
} else {
y -= (size.height / 2);
}
if (yAlign === 'center') {
if (xAlign === 'left') {
x += paddingAndSize;
} else if (xAlign === 'right') {
x -= paddingAndSize;
}
} else if (xAlign === 'left') {
x -= radiusAndPadding;
} else if (xAlign === 'right') {
x += radiusAndPadding;
}
return {
x: x,
y: y
};
}
Chart.Tooltip = Chart.Element.extend({
initialize: function() {
this._model = getBaseModel(this._options);
},
// Get the title
// Args are: (tooltipItem, data)
getTitle: function() {
var me = this;
var opts = me._options;
var callbacks = opts.callbacks;
var beforeTitle = callbacks.beforeTitle.apply(me, arguments),
title = callbacks.title.apply(me, arguments),
afterTitle = callbacks.afterTitle.apply(me, arguments);
var lines = [];
lines = pushOrConcat(lines, beforeTitle);
lines = pushOrConcat(lines, title);
lines = pushOrConcat(lines, afterTitle);
return lines;
},
// Args are: (tooltipItem, data)
getBeforeBody: function() {
var lines = this._options.callbacks.beforeBody.apply(this, arguments);
return helpers.isArray(lines) ? lines : lines !== undefined ? [lines] : [];
},
// Args are: (tooltipItem, data)
getBody: function(tooltipItems, data) {
var me = this;
var callbacks = me._options.callbacks;
var bodyItems = [];
helpers.each(tooltipItems, function(tooltipItem) {
var bodyItem = {
before: [],
lines: [],
after: []
};
pushOrConcat(bodyItem.before, callbacks.beforeLabel.call(me, tooltipItem, data));
pushOrConcat(bodyItem.lines, callbacks.label.call(me, tooltipItem, data));
pushOrConcat(bodyItem.after, callbacks.afterLabel.call(me, tooltipItem, data));
bodyItems.push(bodyItem);
});
return bodyItems;
},
// Args are: (tooltipItem, data)
getAfterBody: function() {
var lines = this._options.callbacks.afterBody.apply(this, arguments);
return helpers.isArray(lines) ? lines : lines !== undefined ? [lines] : [];
},
// Get the footer and beforeFooter and afterFooter lines
// Args are: (tooltipItem, data)
getFooter: function() {
var me = this;
var callbacks = me._options.callbacks;
var beforeFooter = callbacks.beforeFooter.apply(me, arguments);
var footer = callbacks.footer.apply(me, arguments);
var afterFooter = callbacks.afterFooter.apply(me, arguments);
var lines = [];
lines = pushOrConcat(lines, beforeFooter);
lines = pushOrConcat(lines, footer);
lines = pushOrConcat(lines, afterFooter);
return lines;
},
update: function(changed) {
var me = this;
var opts = me._options;
// Need to regenerate the model because its faster than using extend and it is necessary due to the optimization in Chart.Element.transition
// 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
// which breaks any animations.
var existingModel = me._model;
var model = me._model = getBaseModel(opts);
var active = me._active;
var data = me._data;
var chartInstance = me._chartInstance;
// In the case where active.length === 0 we need to keep these at existing values for good animations
var alignment = {
xAlign: existingModel.xAlign,
yAlign: existingModel.yAlign
};
var backgroundPoint = {
x: existingModel.x,
y: existingModel.y
};
var tooltipSize = {
width: existingModel.width,
height: existingModel.height
};
var tooltipPosition = {
x: existingModel.caretX,
y: existingModel.caretY
};
var i, len;
if (active.length) {
model.opacity = 1;
var labelColors = [];
tooltipPosition = Chart.Tooltip.positioners[opts.position](active, me._eventPosition);
var tooltipItems = [];
for (i = 0, len = active.length; i < len; ++i) {
tooltipItems.push(createTooltipItem(active[i]));
}
// If the user provided a filter function, use it to modify the tooltip items
if (opts.filter) {
tooltipItems = tooltipItems.filter(function(a) {
return opts.filter(a, data);
});
}
// If the user provided a sorting function, use it to modify the tooltip items
if (opts.itemSort) {
tooltipItems = tooltipItems.sort(function(a, b) {
return opts.itemSort(a, b, data);
});
}
// Determine colors for boxes
helpers.each(tooltipItems, function(tooltipItem) {
labelColors.push(opts.callbacks.labelColor.call(me, tooltipItem, chartInstance));
});
// Build the Text Lines
model.title = me.getTitle(tooltipItems, data);
model.beforeBody = me.getBeforeBody(tooltipItems, data);
model.body = me.getBody(tooltipItems, data);
model.afterBody = me.getAfterBody(tooltipItems, data);
model.footer = me.getFooter(tooltipItems, data);
// Initial positioning and colors
model.x = Math.round(tooltipPosition.x);
model.y = Math.round(tooltipPosition.y);
model.caretPadding = helpers.getValueOrDefault(tooltipPosition.padding, 2);
model.labelColors = labelColors;
// data points
model.dataPoints = tooltipItems;
// We need to determine alignment of the tooltip
tooltipSize = getTooltipSize(this, model);
alignment = determineAlignment(this, tooltipSize);
// Final Size and Position
backgroundPoint = getBackgroundPoint(model, tooltipSize, alignment);
} else {
model.opacity = 0;
}
model.xAlign = alignment.xAlign;
model.yAlign = alignment.yAlign;
model.x = backgroundPoint.x;
model.y = backgroundPoint.y;
model.width = tooltipSize.width;
model.height = tooltipSize.height;
// Point where the caret on the tooltip points to
model.caretX = tooltipPosition.x;
model.caretY = tooltipPosition.y;
me._model = model;
if (changed && opts.custom) {
opts.custom.call(me, model);
}
return me;
},
drawCaret: function(tooltipPoint, size, opacity) {
var vm = this._view;
var ctx = this._chart.ctx;
var x1, x2, x3;
var y1, y2, y3;
var caretSize = vm.caretSize;
var cornerRadius = vm.cornerRadius;
var xAlign = vm.xAlign,
yAlign = vm.yAlign;
var ptX = tooltipPoint.x,
ptY = tooltipPoint.y;
var width = size.width,
height = size.height;
if (yAlign === 'center') {
// Left or right side
if (xAlign === 'left') {
x1 = ptX;
x2 = x1 - caretSize;
x3 = x1;
} else {
x1 = ptX + width;
x2 = x1 + caretSize;
x3 = x1;
}
y2 = ptY + (height / 2);
y1 = y2 - caretSize;
y3 = y2 + caretSize;
} else {
if (xAlign === 'left') {
x1 = ptX + cornerRadius;
x2 = x1 + caretSize;
x3 = x2 + caretSize;
} else if (xAlign === 'right') {
x1 = ptX + width - cornerRadius;
x2 = x1 - caretSize;
x3 = x2 - caretSize;
} else {
x2 = ptX + (width / 2);
x1 = x2 - caretSize;
x3 = x2 + caretSize;
}
if (yAlign === 'top') {
y1 = ptY;
y2 = y1 - caretSize;
y3 = y1;
} else {
y1 = ptY + height;
y2 = y1 + caretSize;
y3 = y1;
}
}
ctx.fillStyle = mergeOpacity(vm.backgroundColor, opacity);
ctx.beginPath();
ctx.moveTo(x1, y1);
ctx.lineTo(x2, y2);
ctx.lineTo(x3, y3);
ctx.closePath();
ctx.fill();
},
drawTitle: function(pt, vm, ctx, opacity) {
var title = vm.title;
if (title.length) {
ctx.textAlign = vm._titleAlign;
ctx.textBaseline = 'top';
var titleFontSize = vm.titleFontSize,
titleSpacing = vm.titleSpacing;
ctx.fillStyle = mergeOpacity(vm.titleFontColor, opacity);
ctx.font = helpers.fontString(titleFontSize, vm._titleFontStyle, vm._titleFontFamily);
var i, len;
for (i = 0, len = title.length; i < len; ++i) {
ctx.fillText(title[i], pt.x, pt.y);
pt.y += titleFontSize + titleSpacing; // Line Height and spacing
if (i + 1 === title.length) {
pt.y += vm.titleMarginBottom - titleSpacing; // If Last, add margin, remove spacing
}
}
}
},
drawBody: function(pt, vm, ctx, opacity) {
var bodyFontSize = vm.bodyFontSize;
var bodySpacing = vm.bodySpacing;
var body = vm.body;
ctx.textAlign = vm._bodyAlign;
ctx.textBaseline = 'top';
var textColor = mergeOpacity(vm.bodyFontColor, opacity);
ctx.fillStyle = textColor;
ctx.font = helpers.fontString(bodyFontSize, vm._bodyFontStyle, vm._bodyFontFamily);
// Before Body
var xLinePadding = 0;
var fillLineOfText = function(line) {
ctx.fillText(line, pt.x + xLinePadding, pt.y);
pt.y += bodyFontSize + bodySpacing;
};
// Before body lines
helpers.each(vm.beforeBody, fillLineOfText);
var drawColorBoxes = vm.displayColors;
xLinePadding = drawColorBoxes ? (bodyFontSize + 2) : 0;
// Draw body lines now
helpers.each(body, function(bodyItem, i) {
helpers.each(bodyItem.before, fillLineOfText);
helpers.each(bodyItem.lines, function(line) {
// Draw Legend-like boxes if needed
if (drawColorBoxes) {
// Fill a white rect so that colours merge nicely if the opacity is < 1
ctx.fillStyle = mergeOpacity(vm.legendColorBackground, opacity);
ctx.fillRect(pt.x, pt.y, bodyFontSize, bodyFontSize);
// Border
ctx.strokeStyle = mergeOpacity(vm.labelColors[i].borderColor, opacity);
ctx.strokeRect(pt.x, pt.y, bodyFontSize, bodyFontSize);
// Inner square
ctx.fillStyle = mergeOpacity(vm.labelColors[i].backgroundColor, opacity);
ctx.fillRect(pt.x + 1, pt.y + 1, bodyFontSize - 2, bodyFontSize - 2);
ctx.fillStyle = textColor;
}
fillLineOfText(line);
});
helpers.each(bodyItem.after, fillLineOfText);
});
// Reset back to 0 for after body
xLinePadding = 0;
// After body lines
helpers.each(vm.afterBody, fillLineOfText);
pt.y -= bodySpacing; // Remove last body spacing
},
drawFooter: function(pt, vm, ctx, opacity) {
var footer = vm.footer;
if (footer.length) {
pt.y += vm.footerMarginTop;
ctx.textAlign = vm._footerAlign;
ctx.textBaseline = 'top';
ctx.fillStyle = mergeOpacity(vm.footerFontColor, opacity);
ctx.font = helpers.fontString(vm.footerFontSize, vm._footerFontStyle, vm._footerFontFamily);
helpers.each(footer, function(line) {
ctx.fillText(line, pt.x, pt.y);
pt.y += vm.footerFontSize + vm.footerSpacing;
});
}
},
drawBackground: function(pt, vm, ctx, tooltipSize, opacity) {
ctx.fillStyle = mergeOpacity(vm.backgroundColor, opacity);
helpers.drawRoundedRectangle(ctx, pt.x, pt.y, tooltipSize.width, tooltipSize.height, vm.cornerRadius);
ctx.fill();
},
draw: function() {
var ctx = this._chart.ctx;
var vm = this._view;
if (vm.opacity === 0) {
return;
}
var tooltipSize = {
width: vm.width,
height: vm.height
};
var pt = {
x: vm.x,
y: vm.y
};
// IE11/Edge does not like very small opacities, so snap to 0
var opacity = Math.abs(vm.opacity < 1e-3) ? 0 : vm.opacity;
if (this._options.enabled) {
// Draw Background
this.drawBackground(pt, vm, ctx, tooltipSize, opacity);
// Draw Caret
this.drawCaret(pt, tooltipSize, opacity);
// Draw Title, Body, and Footer
pt.x += vm.xPadding;
pt.y += vm.yPadding;
// Titles
this.drawTitle(pt, vm, ctx, opacity);
// Body
this.drawBody(pt, vm, ctx, opacity);
// Footer
this.drawFooter(pt, vm, ctx, opacity);
}
},
/**
* Handle an event
* @private
* @param {IEvent} event - The event to handle
* @returns {Boolean} true if the tooltip changed
*/
handleEvent: function(e) {
var me = this;
var options = me._options;
var changed = false;
me._lastActive = me._lastActive || [];
// Find Active Elements for tooltips
if (e.type === 'mouseout') {
me._active = [];
} else {
me._active = me._chartInstance.getElementsAtEventForMode(e, options.mode, options);
}
// Remember Last Actives
changed = !helpers.arrayEquals(me._active, me._lastActive);
me._lastActive = me._active;
if (options.enabled || options.custom) {
me._eventPosition = {
x: e.x,
y: e.y
};
var model = me._model;
me.update(true);
me.pivot();
// See if our tooltip position changed
changed |= (model.x !== me._model.x) || (model.y !== me._model.y);
}
return changed;
}
});
/**
* @namespace Chart.Tooltip.positioners
*/
Chart.Tooltip.positioners = {
/**
* Average mode places the tooltip at the average position of the elements shown
* @function Chart.Tooltip.positioners.average
* @param elements {ChartElement[]} the elements being displayed in the tooltip
* @returns {Point} tooltip position
*/
average: function(elements) {
if (!elements.length) {
return false;
}
var i, len;
var x = 0;
var y = 0;
var count = 0;
for (i = 0, len = elements.length; i < len; ++i) {
var el = elements[i];
if (el && el.hasValue()) {
var pos = el.tooltipPosition();
x += pos.x;
y += pos.y;
++count;
}
}
return {
x: Math.round(x / count),
y: Math.round(y / count)
};
},
/**
* Gets the tooltip position nearest of the item nearest to the event position
* @function Chart.Tooltip.positioners.nearest
* @param elements {Chart.Element[]} the tooltip elements
* @param eventPosition {Point} the position of the event in canvas coordinates
* @returns {Point} the tooltip position
*/
nearest: function(elements, eventPosition) {
var x = eventPosition.x;
var y = eventPosition.y;
var nearestElement;
var minDistance = Number.POSITIVE_INFINITY;
var i, len;
for (i = 0, len = elements.length; i < len; ++i) {
var el = elements[i];
if (el && el.hasValue()) {
var center = el.getCenterPoint();
var d = helpers.distanceBetweenPoints(eventPosition, center);
if (d < minDistance) {
minDistance = d;
nearestElement = el;
}
}
}
if (nearestElement) {
var tp = nearestElement.tooltipPosition();
x = tp.x;
y = tp.y;
}
return {
x: x,
y: y
};
}
};
};
},{}],37:[function(require,module,exports){
'use strict';
module.exports = function(Chart) {
var helpers = Chart.helpers,
globalOpts = Chart.defaults.global;
globalOpts.elements.arc = {
backgroundColor: globalOpts.defaultColor,
borderColor: '#fff',
borderWidth: 2
};
Chart.elements.Arc = Chart.Element.extend({
inLabelRange: function(mouseX) {
var vm = this._view;
if (vm) {
return (Math.pow(mouseX - vm.x, 2) < Math.pow(vm.radius + vm.hoverRadius, 2));
}
return false;
},
inRange: function(chartX, chartY) {
var vm = this._view;
if (vm) {
var pointRelativePosition = helpers.getAngleFromPoint(vm, {
x: chartX,
y: chartY
}),
angle = pointRelativePosition.angle,
distance = pointRelativePosition.distance;
// Sanitise angle range
var startAngle = vm.startAngle;
var endAngle = vm.endAngle;
while (endAngle < startAngle) {
endAngle += 2.0 * Math.PI;
}
while (angle > endAngle) {
angle -= 2.0 * Math.PI;
}
while (angle < startAngle) {
angle += 2.0 * Math.PI;
}
// Check if within the range of the open/close angle
var betweenAngles = (angle >= startAngle && angle <= endAngle),
withinRadius = (distance >= vm.innerRadius && distance <= vm.outerRadius);
return (betweenAngles && withinRadius);
}
return false;
},
getCenterPoint: function() {
var vm = this._view;
var halfAngle = (vm.startAngle + vm.endAngle) / 2;
var halfRadius = (vm.innerRadius + vm.outerRadius) / 2;
return {
x: vm.x + Math.cos(halfAngle) * halfRadius,
y: vm.y + Math.sin(halfAngle) * halfRadius
};
},
getArea: function() {
var vm = this._view;
return Math.PI * ((vm.endAngle - vm.startAngle) / (2 * Math.PI)) * (Math.pow(vm.outerRadius, 2) - Math.pow(vm.innerRadius, 2));
},
tooltipPosition: function() {
var vm = this._view;
var centreAngle = vm.startAngle + ((vm.endAngle - vm.startAngle) / 2),
rangeFromCentre = (vm.outerRadius - vm.innerRadius) / 2 + vm.innerRadius;
return {
x: vm.x + (Math.cos(centreAngle) * rangeFromCentre),
y: vm.y + (Math.sin(centreAngle) * rangeFromCentre)
};
},
draw: function() {
var ctx = this._chart.ctx,
vm = this._view,
sA = vm.startAngle,
eA = vm.endAngle;
ctx.beginPath();
ctx.arc(vm.x, vm.y, vm.outerRadius, sA, eA);
ctx.arc(vm.x, vm.y, vm.innerRadius, eA, sA, true);
ctx.closePath();
ctx.strokeStyle = vm.borderColor;
ctx.lineWidth = vm.borderWidth;
ctx.fillStyle = vm.backgroundColor;
ctx.fill();
ctx.lineJoin = 'bevel';
if (vm.borderWidth) {
ctx.stroke();
}
}
});
};
},{}],38:[function(require,module,exports){
'use strict';
module.exports = function(Chart) {
var helpers = Chart.helpers;
var globalDefaults = Chart.defaults.global;
Chart.defaults.global.elements.line = {
tension: 0.4,
backgroundColor: globalDefaults.defaultColor,
borderWidth: 3,
borderColor: globalDefaults.defaultColor,
borderCapStyle: 'butt',
borderDash: [],
borderDashOffset: 0.0,
borderJoinStyle: 'miter',
capBezierPoints: true,
fill: true, // do we fill in the area between the line and its base axis
};
Chart.elements.Line = Chart.Element.extend({
draw: function() {
var me = this;
var vm = me._view;
var spanGaps = vm.spanGaps;
var fillPoint = vm.scaleZero;
var loop = me._loop;
// Handle different fill modes for cartesian lines
if (!loop) {
if (vm.fill === 'top') {
fillPoint = vm.scaleTop;
} else if (vm.fill === 'bottom') {
fillPoint = vm.scaleBottom;
}
}
var ctx = me._chart.ctx;
ctx.save();
// Helper function to draw a line to a point
function lineToPoint(previousPoint, point) {
var pointVM = point._view;
if (point._view.steppedLine === true) {
ctx.lineTo(pointVM.x, previousPoint._view.y);
ctx.lineTo(pointVM.x, pointVM.y);
} else if (point._view.tension === 0) {
ctx.lineTo(pointVM.x, pointVM.y);
} else {
ctx.bezierCurveTo(
previousPoint._view.controlPointNextX,
previousPoint._view.controlPointNextY,
pointVM.controlPointPreviousX,
pointVM.controlPointPreviousY,
pointVM.x,
pointVM.y
);
}
}
var points = me._children.slice(); // clone array
var lastDrawnIndex = -1;
// If we are looping, adding the first point again
if (loop && points.length) {
points.push(points[0]);
}
var index, current, previous, currentVM;
// Fill Line
if (points.length && vm.fill) {
ctx.beginPath();
for (index = 0; index < points.length; ++index) {
current = points[index];
previous = helpers.previousItem(points, index);
currentVM = current._view;
// First point moves to it's starting position no matter what
if (index === 0) {
if (loop) {
ctx.moveTo(fillPoint.x, fillPoint.y);
} else {
ctx.moveTo(currentVM.x, fillPoint);
}
if (!currentVM.skip) {
lastDrawnIndex = index;
ctx.lineTo(currentVM.x, currentVM.y);
}
} else {
previous = lastDrawnIndex === -1 ? previous : points[lastDrawnIndex];
if (currentVM.skip) {
// Only do this if this is the first point that is skipped
if (!spanGaps && lastDrawnIndex === (index - 1)) {
if (loop) {
ctx.lineTo(fillPoint.x, fillPoint.y);
} else {
ctx.lineTo(previous._view.x, fillPoint);
}
}
} else {
if (lastDrawnIndex !== (index - 1)) {
// There was a gap and this is the first point after the gap. If we've never drawn a point, this is a special case.
// If the first data point is NaN, then there is no real gap to skip
if (spanGaps && lastDrawnIndex !== -1) {
// We are spanning the gap, so simple draw a line to this point
lineToPoint(previous, current);
} else if (loop) {
ctx.lineTo(currentVM.x, currentVM.y);
} else {
ctx.lineTo(currentVM.x, fillPoint);
ctx.lineTo(currentVM.x, currentVM.y);
}
} else {
// Line to next point
lineToPoint(previous, current);
}
lastDrawnIndex = index;
}
}
}
if (!loop && lastDrawnIndex !== -1) {
ctx.lineTo(points[lastDrawnIndex]._view.x, fillPoint);
}
ctx.fillStyle = vm.backgroundColor || globalDefaults.defaultColor;
ctx.closePath();
ctx.fill();
}
// Stroke Line Options
var globalOptionLineElements = globalDefaults.elements.line;
ctx.lineCap = vm.borderCapStyle || globalOptionLineElements.borderCapStyle;
// IE 9 and 10 do not support line dash
if (ctx.setLineDash) {
ctx.setLineDash(vm.borderDash || globalOptionLineElements.borderDash);
}
ctx.lineDashOffset = vm.borderDashOffset || globalOptionLineElements.borderDashOffset;
ctx.lineJoin = vm.borderJoinStyle || globalOptionLineElements.borderJoinStyle;
ctx.lineWidth = vm.borderWidth || globalOptionLineElements.borderWidth;
ctx.strokeStyle = vm.borderColor || globalDefaults.defaultColor;
// Stroke Line
ctx.beginPath();
lastDrawnIndex = -1;
for (index = 0; index < points.length; ++index) {
current = points[index];
previous = helpers.previousItem(points, index);
currentVM = current._view;
// First point moves to it's starting position no matter what
if (index === 0) {
if (!currentVM.skip) {
ctx.moveTo(currentVM.x, currentVM.y);
lastDrawnIndex = index;
}
} else {
previous = lastDrawnIndex === -1 ? previous : points[lastDrawnIndex];
if (!currentVM.skip) {
if ((lastDrawnIndex !== (index - 1) && !spanGaps) || lastDrawnIndex === -1) {
// There was a gap and this is the first point after the gap
ctx.moveTo(currentVM.x, currentVM.y);
} else {
// Line to next point
lineToPoint(previous, current);
}
lastDrawnIndex = index;
}
}
}
ctx.stroke();
ctx.restore();
}
});
};
},{}],39:[function(require,module,exports){
'use strict';
module.exports = function(Chart) {
var helpers = Chart.helpers,
globalOpts = Chart.defaults.global,
defaultColor = globalOpts.defaultColor;
globalOpts.elements.point = {
radius: 3,
pointStyle: 'circle',
backgroundColor: defaultColor,
borderWidth: 1,
borderColor: defaultColor,
// Hover
hitRadius: 1,
hoverRadius: 4,
hoverBorderWidth: 1
};
function xRange(mouseX) {
var vm = this._view;
return vm ? (Math.pow(mouseX - vm.x, 2) < Math.pow(vm.radius + vm.hitRadius, 2)) : false;
}
function yRange(mouseY) {
var vm = this._view;
return vm ? (Math.pow(mouseY - vm.y, 2) < Math.pow(vm.radius + vm.hitRadius, 2)) : false;
}
Chart.elements.Point = Chart.Element.extend({
inRange: function(mouseX, mouseY) {
var vm = this._view;
return vm ? ((Math.pow(mouseX - vm.x, 2) + Math.pow(mouseY - vm.y, 2)) < Math.pow(vm.hitRadius + vm.radius, 2)) : false;
},
inLabelRange: xRange,
inXRange: xRange,
inYRange: yRange,
getCenterPoint: function() {
var vm = this._view;
return {
x: vm.x,
y: vm.y
};
},
getArea: function() {
return Math.PI * Math.pow(this._view.radius, 2);
},
tooltipPosition: function() {
var vm = this._view;
return {
x: vm.x,
y: vm.y,
padding: vm.radius + vm.borderWidth
};
},
draw: function(chartArea) {
var vm = this._view;
var model = this._model;
var ctx = this._chart.ctx;
var pointStyle = vm.pointStyle;
var radius = vm.radius;
var x = vm.x;
var y = vm.y;
var color = Chart.helpers.color;
var errMargin = 1.01; // 1.01 is margin for Accumulated error. (Especially Edge, IE.)
var ratio = 0;
if (vm.skip) {
return;
}
ctx.strokeStyle = vm.borderColor || defaultColor;
ctx.lineWidth = helpers.getValueOrDefault(vm.borderWidth, globalOpts.elements.point.borderWidth);
ctx.fillStyle = vm.backgroundColor || defaultColor;
// Cliping for Points.
// going out from inner charArea?
if ((chartArea !== undefined) && ((model.x < chartArea.left) || (chartArea.right*errMargin < model.x) || (model.y < chartArea.top) || (chartArea.bottom*errMargin < model.y))) {
// Point fade out
if (model.x < chartArea.left) {
ratio = (x - model.x) / (chartArea.left - model.x);
} else if (chartArea.right*errMargin < model.x) {
ratio = (model.x - x) / (model.x - chartArea.right);
} else if (model.y < chartArea.top) {
ratio = (y - model.y) / (chartArea.top - model.y);
} else if (chartArea.bottom*errMargin < model.y) {
ratio = (model.y - y) / (model.y - chartArea.bottom);
}
ratio = Math.round(ratio*100) / 100;
ctx.strokeStyle = color(ctx.strokeStyle).alpha(ratio).rgbString();
ctx.fillStyle = color(ctx.fillStyle).alpha(ratio).rgbString();
}
Chart.canvasHelpers.drawPoint(ctx, pointStyle, radius, x, y);
}
});
};
},{}],40:[function(require,module,exports){
'use strict';
module.exports = function(Chart) {
var globalOpts = Chart.defaults.global;
globalOpts.elements.rectangle = {
backgroundColor: globalOpts.defaultColor,
borderWidth: 0,
borderColor: globalOpts.defaultColor,
borderSkipped: 'bottom'
};
function isVertical(bar) {
return bar._view.width !== undefined;
}
/**
* Helper function to get the bounds of the bar regardless of the orientation
* @private
* @param bar {Chart.Element.Rectangle} the bar
* @return {Bounds} bounds of the bar
*/
function getBarBounds(bar) {
var vm = bar._view;
var x1, x2, y1, y2;
if (isVertical(bar)) {
// vertical
var halfWidth = vm.width / 2;
x1 = vm.x - halfWidth;
x2 = vm.x + halfWidth;
y1 = Math.min(vm.y, vm.base);
y2 = Math.max(vm.y, vm.base);
} else {
// horizontal bar
var halfHeight = vm.height / 2;
x1 = Math.min(vm.x, vm.base);
x2 = Math.max(vm.x, vm.base);
y1 = vm.y - halfHeight;
y2 = vm.y + halfHeight;
}
return {
left: x1,
top: y1,
right: x2,
bottom: y2
};
}
Chart.elements.Rectangle = Chart.Element.extend({
draw: function() {
var ctx = this._chart.ctx;
var vm = this._view;
var left, right, top, bottom, signX, signY, borderSkipped;
var borderWidth = vm.borderWidth;
if (!vm.horizontal) {
// bar
left = vm.x - vm.width / 2;
right = vm.x + vm.width / 2;
top = vm.y;
bottom = vm.base;
signX = 1;
signY = bottom > top? 1: -1;
borderSkipped = vm.borderSkipped || 'bottom';
} else {
// horizontal bar
left = vm.base;
right = vm.x;
top = vm.y - vm.height / 2;
bottom = vm.y + vm.height / 2;
signX = right > left? 1: -1;
signY = 1;
borderSkipped = vm.borderSkipped || 'left';
}
// Canvas doesn't allow us to stroke inside the width so we can
// adjust the sizes to fit if we're setting a stroke on the line
if (borderWidth) {
// borderWidth shold be less than bar width and bar height.
var barSize = Math.min(Math.abs(left - right), Math.abs(top - bottom));
borderWidth = borderWidth > barSize? barSize: borderWidth;
var halfStroke = borderWidth / 2;
// Adjust borderWidth when bar top position is near vm.base(zero).
var borderLeft = left + (borderSkipped !== 'left'? halfStroke * signX: 0);
var borderRight = right + (borderSkipped !== 'right'? -halfStroke * signX: 0);
var borderTop = top + (borderSkipped !== 'top'? halfStroke * signY: 0);
var borderBottom = bottom + (borderSkipped !== 'bottom'? -halfStroke * signY: 0);
// not become a vertical line?
if (borderLeft !== borderRight) {
top = borderTop;
bottom = borderBottom;
}
// not become a horizontal line?
if (borderTop !== borderBottom) {
left = borderLeft;
right = borderRight;
}
}
ctx.beginPath();
ctx.fillStyle = vm.backgroundColor;
ctx.strokeStyle = vm.borderColor;
ctx.lineWidth = borderWidth;
// Corner points, from bottom-left to bottom-right clockwise
// | 1 2 |
// | 0 3 |
var corners = [
[left, bottom],
[left, top],
[right, top],
[right, bottom]
];
// Find first (starting) corner with fallback to 'bottom'
var borders = ['bottom', 'left', 'top', 'right'];
var startCorner = borders.indexOf(borderSkipped, 0);
if (startCorner === -1) {
startCorner = 0;
}
function cornerAt(index) {
return corners[(startCorner + index) % 4];
}
// Draw rectangle from 'startCorner'
var corner = cornerAt(0);
ctx.moveTo(corner[0], corner[1]);
for (var i = 1; i < 4; i++) {
corner = cornerAt(i);
ctx.lineTo(corner[0], corner[1]);
}
ctx.fill();
if (borderWidth) {
ctx.stroke();
}
},
height: function() {
var vm = this._view;
return vm.base - vm.y;
},
inRange: function(mouseX, mouseY) {
var inRange = false;
if (this._view) {
var bounds = getBarBounds(this);
inRange = mouseX >= bounds.left && mouseX <= bounds.right && mouseY >= bounds.top && mouseY <= bounds.bottom;
}
return inRange;
},
inLabelRange: function(mouseX, mouseY) {
var me = this;
if (!me._view) {
return false;
}
var inRange = false;
var bounds = getBarBounds(me);
if (isVertical(me)) {
inRange = mouseX >= bounds.left && mouseX <= bounds.right;
} else {
inRange = mouseY >= bounds.top && mouseY <= bounds.bottom;
}
return inRange;
},
inXRange: function(mouseX) {
var bounds = getBarBounds(this);
return mouseX >= bounds.left && mouseX <= bounds.right;
},
inYRange: function(mouseY) {
var bounds = getBarBounds(this);
return mouseY >= bounds.top && mouseY <= bounds.bottom;
},
getCenterPoint: function() {
var vm = this._view;
var x, y;
if (isVertical(this)) {
x = vm.x;
y = (vm.y + vm.base) / 2;
} else {
x = (vm.x + vm.base) / 2;
y = vm.y;
}
return {x: x, y: y};
},
getArea: function() {
var vm = this._view;
return vm.width * Math.abs(vm.y - vm.base);
},
tooltipPosition: function() {
var vm = this._view;
return {
x: vm.x,
y: vm.y
};
}
});
};
},{}],41:[function(require,module,exports){
'use strict';
// Chart.Platform implementation for targeting a web browser
module.exports = function(Chart) {
var helpers = Chart.helpers;
// DOM event types -> Chart.js event types.
// Note: only events with different types are mapped.
// https://developer.mozilla.org/en-US/docs/Web/Events
var eventTypeMap = {
// Touch events
touchstart: 'mousedown',
touchmove: 'mousemove',
touchend: 'mouseup',
// Pointer events
pointerenter: 'mouseenter',
pointerdown: 'mousedown',
pointermove: 'mousemove',
pointerup: 'mouseup',
pointerleave: 'mouseout',
pointerout: 'mouseout'
};
/**
* The "used" size is the final value of a dimension property after all calculations have
* been performed. This method uses the computed style of `element` but returns undefined
* if the computed style is not expressed in pixels. That can happen in some cases where
* `element` has a size relative to its parent and this last one is not yet displayed,
* for example because of `display: none` on a parent node.
* @see https://developer.mozilla.org/en-US/docs/Web/CSS/used_value
* @returns {Number} Size in pixels or undefined if unknown.
*/
function readUsedSize(element, property) {
var value = helpers.getStyle(element, property);
var matches = value && value.match(/(\d+)px/);
return matches? Number(matches[1]) : undefined;
}
/**
* Initializes the canvas style and render size without modifying the canvas display size,
* since responsiveness is handled by the controller.resize() method. The config is used
* to determine the aspect ratio to apply in case no explicit height has been specified.
*/
function initCanvas(canvas, config) {
var style = canvas.style;
// NOTE(SB) canvas.getAttribute('width') !== canvas.width: in the first case it
// returns null or '' if no explicit value has been set to the canvas attribute.
var renderHeight = canvas.getAttribute('height');
var renderWidth = canvas.getAttribute('width');
// Chart.js modifies some canvas values that we want to restore on destroy
canvas._chartjs = {
initial: {
height: renderHeight,
width: renderWidth,
style: {
display: style.display,
height: style.height,
width: style.width
}
}
};
// Force canvas to display as block to avoid extra space caused by inline
// elements, which would interfere with the responsive resize process.
// https://github.com/chartjs/Chart.js/issues/2538
style.display = style.display || 'block';
if (renderWidth === null || renderWidth === '') {
var displayWidth = readUsedSize(canvas, 'width');
if (displayWidth !== undefined) {
canvas.width = displayWidth;
}
}
if (renderHeight === null || renderHeight === '') {
if (canvas.style.height === '') {
// If no explicit render height and style height, let's apply the aspect ratio,
// which one can be specified by the user but also by charts as default option
// (i.e. options.aspectRatio). If not specified, use canvas aspect ratio of 2.
canvas.height = canvas.width / (config.options.aspectRatio || 2);
} else {
var displayHeight = readUsedSize(canvas, 'height');
if (displayWidth !== undefined) {
canvas.height = displayHeight;
}
}
}
return canvas;
}
function createEvent(type, chart, x, y, native) {
return {
type: type,
chart: chart,
native: native || null,
x: x !== undefined? x : null,
y: y !== undefined? y : null,
};
}
function fromNativeEvent(event, chart) {
var type = eventTypeMap[event.type] || event.type;
var pos = helpers.getRelativePosition(event, chart);
return createEvent(type, chart, pos.x, pos.y, event);
}
function createResizer(handler) {
var iframe = document.createElement('iframe');
iframe.className = 'chartjs-hidden-iframe';
iframe.style.cssText =
'display:block;'+
'overflow:hidden;'+
'border:0;'+
'margin:0;'+
'top:0;'+
'left:0;'+
'bottom:0;'+
'right:0;'+
'height:100%;'+
'width:100%;'+
'position:absolute;'+
'pointer-events:none;'+
'z-index:-1;';
// Prevent the iframe to gain focus on tab.
// https://github.com/chartjs/Chart.js/issues/3090
iframe.tabIndex = -1;
// If the iframe is re-attached to the DOM, the resize listener is removed because the
// content is reloaded, so make sure to install the handler after the iframe is loaded.
// https://github.com/chartjs/Chart.js/issues/3521
helpers.addEvent(iframe, 'load', function() {
helpers.addEvent(iframe.contentWindow || iframe, 'resize', handler);
// The iframe size might have changed while loading, which can also
// happen if the size has been changed while detached from the DOM.
handler();
});
return iframe;
}
function addResizeListener(node, listener, chart) {
var stub = node._chartjs = {
ticking: false
};
// Throttle the callback notification until the next animation frame.
var notify = function() {
if (!stub.ticking) {
stub.ticking = true;
helpers.requestAnimFrame.call(window, function() {
if (stub.resizer) {
stub.ticking = false;
return listener(createEvent('resize', chart));
}
});
}
};
// Let's keep track of this added iframe and thus avoid DOM query when removing it.
stub.resizer = createResizer(notify);
node.insertBefore(stub.resizer, node.firstChild);
}
function removeResizeListener(node) {
if (!node || !node._chartjs) {
return;
}
var resizer = node._chartjs.resizer;
if (resizer) {
resizer.parentNode.removeChild(resizer);
node._chartjs.resizer = null;
}
delete node._chartjs;
}
return {
acquireContext: function(item, config) {
if (typeof item === 'string') {
item = document.getElementById(item);
} else if (item.length) {
// Support for array based queries (such as jQuery)
item = item[0];
}
if (item && item.canvas) {
// Support for any object associated to a canvas (including a context2d)
item = item.canvas;
}
if (item instanceof HTMLCanvasElement) {
// To prevent canvas fingerprinting, some add-ons undefine the getContext
// method, for example: https://github.com/kkapsner/CanvasBlocker
// https://github.com/chartjs/Chart.js/issues/2807
var context = item.getContext && item.getContext('2d');
if (context instanceof CanvasRenderingContext2D) {
initCanvas(item, config);
return context;
}
}
return null;
},
releaseContext: function(context) {
var canvas = context.canvas;
if (!canvas._chartjs) {
return;
}
var initial = canvas._chartjs.initial;
['height', 'width'].forEach(function(prop) {
var value = initial[prop];
if (value === undefined || value === null) {
canvas.removeAttribute(prop);
} else {
canvas.setAttribute(prop, value);
}
});
helpers.each(initial.style || {}, function(value, key) {
canvas.style[key] = value;
});
// The canvas render size might have been changed (and thus the state stack discarded),
// we can't use save() and restore() to restore the initial state. So make sure that at
// least the canvas context is reset to the default state by setting the canvas width.
// https://www.w3.org/TR/2011/WD-html5-20110525/the-canvas-element.html
canvas.width = canvas.width;
delete canvas._chartjs;
},
addEventListener: function(chart, type, listener) {
var canvas = chart.chart.canvas;
if (type === 'resize') {
// Note: the resize event is not supported on all browsers.
addResizeListener(canvas.parentNode, listener, chart.chart);
return;
}
var stub = listener._chartjs || (listener._chartjs = {});
var proxies = stub.proxies || (stub.proxies = {});
var proxy = proxies[chart.id + '_' + type] = function(event) {
listener(fromNativeEvent(event, chart.chart));
};
helpers.addEvent(canvas, type, proxy);
},
removeEventListener: function(chart, type, listener) {
var canvas = chart.chart.canvas;
if (type === 'resize') {
// Note: the resize event is not supported on all browsers.
removeResizeListener(canvas.parentNode, listener);
return;
}
var stub = listener._chartjs || {};
var proxies = stub.proxies || {};
var proxy = proxies[chart.id + '_' + type];
if (!proxy) {
return;
}
helpers.removeEvent(canvas, type, proxy);
}
};
};
},{}],42:[function(require,module,exports){
'use strict';
// By default, select the browser (DOM) platform.
// @TODO Make possible to select another platform at build time.
var implementation = require(41);
module.exports = function(Chart) {
/**
* @namespace Chart.platform
* @see https://chartjs.gitbooks.io/proposals/content/Platform.html
* @since 2.4.0
*/
Chart.platform = {
/**
* Called at chart construction time, returns a context2d instance implementing
* the [W3C Canvas 2D Context API standard]{@link https://www.w3.org/TR/2dcontext/}.
* @param {*} item - The native item from which to acquire context (platform specific)
* @param {Object} options - The chart options
* @returns {CanvasRenderingContext2D} context2d instance
*/
acquireContext: function() {},
/**
* Called at chart destruction time, releases any resources associated to the context
* previously returned by the acquireContext() method.
* @param {CanvasRenderingContext2D} context - The context2d instance
* @returns {Boolean} true if the method succeeded, else false
*/
releaseContext: function() {},
/**
* Registers the specified listener on the given chart.
* @param {Chart} chart - Chart from which to listen for event
* @param {String} type - The ({@link IEvent}) type to listen for
* @param {Function} listener - Receives a notification (an object that implements
* the {@link IEvent} interface) when an event of the specified type occurs.
*/
addEventListener: function() {},
/**
* Removes the specified listener previously registered with addEventListener.
* @param {Chart} chart -Chart from which to remove the listener
* @param {String} type - The ({@link IEvent}) type to remove
* @param {Function} listener - The listener function to remove from the event target.
*/
removeEventListener: function() {}
};
/**
* @interface IPlatform
* Allows abstracting platform dependencies away from the chart
* @borrows Chart.platform.acquireContext as acquireContext
* @borrows Chart.platform.releaseContext as releaseContext
* @borrows Chart.platform.addEventListener as addEventListener
* @borrows Chart.platform.removeEventListener as removeEventListener
*/
/**
* @interface IEvent
* @prop {String} type - The event type name, possible values are:
* 'contextmenu', 'mouseenter', 'mousedown', 'mousemove', 'mouseup', 'mouseout',
* 'click', 'dblclick', 'keydown', 'keypress', 'keyup' and 'resize'
* @prop {*} native - The original native event (null for emulated events, e.g. 'resize')
* @prop {Number} x - The mouse x position, relative to the canvas (null for incompatible events)
* @prop {Number} y - The mouse y position, relative to the canvas (null for incompatible events)
*/
Chart.helpers.extend(Chart.platform, implementation(Chart));
};
},{"41":41}],43:[function(require,module,exports){
'use strict';
module.exports = function(Chart) {
var helpers = Chart.helpers;
// Default config for a category scale
var defaultConfig = {
position: 'bottom'
};
var DatasetScale = Chart.Scale.extend({
/**
* Internal function to get the correct labels. If data.xLabels or data.yLabels are defined, use those
* else fall back to data.labels
* @private
*/
getLabels: function() {
var data = this.chart.data;
return (this.isHorizontal() ? data.xLabels : data.yLabels) || data.labels;
},
// Implement this so that
determineDataLimits: function() {
var me = this;
var labels = me.getLabels();
me.minIndex = 0;
me.maxIndex = labels.length - 1;
var findIndex;
if (me.options.ticks.min !== undefined) {
// user specified min value
findIndex = helpers.indexOf(labels, me.options.ticks.min);
me.minIndex = findIndex !== -1 ? findIndex : me.minIndex;
}
if (me.options.ticks.max !== undefined) {
// user specified max value
findIndex = helpers.indexOf(labels, me.options.ticks.max);
me.maxIndex = findIndex !== -1 ? findIndex : me.maxIndex;
}
me.min = labels[me.minIndex];
me.max = labels[me.maxIndex];
},
buildTicks: function() {
var me = this;
var labels = me.getLabels();
// If we are viewing some subset of labels, slice the original array
me.ticks = (me.minIndex === 0 && me.maxIndex === labels.length - 1) ? labels : labels.slice(me.minIndex, me.maxIndex + 1);
},
getLabelForIndex: function(index, datasetIndex) {
var me = this;
var data = me.chart.data;
var isHorizontal = me.isHorizontal();
if (data.yLabels && !isHorizontal) {
return me.getRightValue(data.datasets[datasetIndex].data[index]);
}
return me.ticks[index - me.minIndex];
},
// Used to get data value locations. Value can either be an index or a numerical value
getPixelForValue: function(value, index, datasetIndex, includeOffset) {
var me = this;
// 1 is added because we need the length but we have the indexes
var offsetAmt = Math.max((me.maxIndex + 1 - me.minIndex - ((me.options.gridLines.offsetGridLines) ? 0 : 1)), 1);
if (value !== undefined && isNaN(index)) {
var labels = me.getLabels();
var idx = labels.indexOf(value);
index = idx !== -1 ? idx : index;
}
if (me.isHorizontal()) {
var valueWidth = me.width / offsetAmt;
var widthOffset = (valueWidth * (index - me.minIndex));
if (me.options.gridLines.offsetGridLines && includeOffset || me.maxIndex === me.minIndex && includeOffset) {
widthOffset += (valueWidth / 2);
}
return me.left + Math.round(widthOffset);
}
var valueHeight = me.height / offsetAmt;
var heightOffset = (valueHeight * (index - me.minIndex));
if (me.options.gridLines.offsetGridLines && includeOffset) {
heightOffset += (valueHeight / 2);
}
return me.top + Math.round(heightOffset);
},
getPixelForTick: function(index, includeOffset) {
return this.getPixelForValue(this.ticks[index], index + this.minIndex, null, includeOffset);
},
getValueForPixel: function(pixel) {
var me = this;
var value;
var offsetAmt = Math.max((me.ticks.length - ((me.options.gridLines.offsetGridLines) ? 0 : 1)), 1);
var horz = me.isHorizontal();
var valueDimension = (horz ? me.width : me.height) / offsetAmt;
pixel -= horz ? me.left : me.top;
if (me.options.gridLines.offsetGridLines) {
pixel -= (valueDimension / 2);
}
if (pixel <= 0) {
value = 0;
} else {
value = Math.round(pixel / valueDimension);
}
return value;
},
getBasePixel: function() {
return this.bottom;
}
});
Chart.scaleService.registerScaleType('category', DatasetScale, defaultConfig);
};
},{}],44:[function(require,module,exports){
'use strict';
module.exports = function(Chart) {
var helpers = Chart.helpers;
var defaultConfig = {
position: 'left',
ticks: {
callback: Chart.Ticks.formatters.linear
}
};
var LinearScale = Chart.LinearScaleBase.extend({
determineDataLimits: function() {
var me = this;
var opts = me.options;
var chart = me.chart;
var data = chart.data;
var datasets = data.datasets;
var isHorizontal = me.isHorizontal();
function IDMatches(meta) {
return isHorizontal ? meta.xAxisID === me.id : meta.yAxisID === me.id;
}
// First Calculate the range
me.min = null;
me.max = null;
var hasStacks = opts.stacked;
if (hasStacks === undefined) {
helpers.each(datasets, function(dataset, datasetIndex) {
if (hasStacks) {
return;
}
var meta = chart.getDatasetMeta(datasetIndex);
if (chart.isDatasetVisible(datasetIndex) && IDMatches(meta) &&
meta.stack !== undefined) {
hasStacks = true;
}
});
}
if (opts.stacked || hasStacks) {
var valuesPerStack = {};
helpers.each(datasets, function(dataset, datasetIndex) {
var meta = chart.getDatasetMeta(datasetIndex);
var key = [
meta.type,
// we have a separate stack for stack=undefined datasets when the opts.stacked is undefined
((opts.stacked === undefined && meta.stack === undefined) ? datasetIndex : ''),
meta.stack
].join('.');
if (valuesPerStack[key] === undefined) {
valuesPerStack[key] = {
positiveValues: [],
negativeValues: []
};
}
// Store these per type
var positiveValues = valuesPerStack[key].positiveValues;
var negativeValues = valuesPerStack[key].negativeValues;
if (chart.isDatasetVisible(datasetIndex) && IDMatches(meta)) {
helpers.each(dataset.data, function(rawValue, index) {
var value = +me.getRightValue(rawValue);
if (isNaN(value) || meta.data[index].hidden) {
return;
}
positiveValues[index] = positiveValues[index] || 0;
negativeValues[index] = negativeValues[index] || 0;
if (opts.relativePoints) {
positiveValues[index] = 100;
} else if (value < 0) {
negativeValues[index] += value;
} else {
positiveValues[index] += value;
}
});
}
});
helpers.each(valuesPerStack, function(valuesForType) {
var values = valuesForType.positiveValues.concat(valuesForType.negativeValues);
var minVal = helpers.min(values);
var maxVal = helpers.max(values);
me.min = me.min === null ? minVal : Math.min(me.min, minVal);
me.max = me.max === null ? maxVal : Math.max(me.max, maxVal);
});
} else {
helpers.each(datasets, function(dataset, datasetIndex) {
var meta = chart.getDatasetMeta(datasetIndex);
if (chart.isDatasetVisible(datasetIndex) && IDMatches(meta)) {
helpers.each(dataset.data, function(rawValue, index) {
var value = +me.getRightValue(rawValue);
if (isNaN(value) || meta.data[index].hidden) {
return;
}
if (me.min === null) {
me.min = value;
} else if (value < me.min) {
me.min = value;
}
if (me.max === null) {
me.max = value;
} else if (value > me.max) {
me.max = value;
}
});
}
});
}
// Common base implementation to handle ticks.min, ticks.max, ticks.beginAtZero
this.handleTickRangeOptions();
},
getTickLimit: function() {
var maxTicks;
var me = this;
var tickOpts = me.options.ticks;
if (me.isHorizontal()) {
maxTicks = Math.min(tickOpts.maxTicksLimit ? tickOpts.maxTicksLimit : 11, Math.ceil(me.width / 50));
} else {
// The factor of 2 used to scale the font size has been experimentally determined.
var tickFontSize = helpers.getValueOrDefault(tickOpts.fontSize, Chart.defaults.global.defaultFontSize);
maxTicks = Math.min(tickOpts.maxTicksLimit ? tickOpts.maxTicksLimit : 11, Math.ceil(me.height / (2 * tickFontSize)));
}
return maxTicks;
},
// Called after the ticks are built. We need
handleDirectionalChanges: function() {
if (!this.isHorizontal()) {
// We are in a vertical orientation. The top value is the highest. So reverse the array
this.ticks.reverse();
}
},
getLabelForIndex: function(index, datasetIndex) {
return +this.getRightValue(this.chart.data.datasets[datasetIndex].data[index]);
},
// Utils
getPixelForValue: function(value) {
// This must be called after fit has been run so that
// this.left, this.top, this.right, and this.bottom have been defined
var me = this;
var start = me.start;
var rightValue = +me.getRightValue(value);
var pixel;
var range = me.end - start;
if (me.isHorizontal()) {
pixel = me.left + (me.width / range * (rightValue - start));
return Math.round(pixel);
}
pixel = me.bottom - (me.height / range * (rightValue - start));
return Math.round(pixel);
},
getValueForPixel: function(pixel) {
var me = this;
var isHorizontal = me.isHorizontal();
var innerDimension = isHorizontal ? me.width : me.height;
var offset = (isHorizontal ? pixel - me.left : me.bottom - pixel) / innerDimension;
return me.start + ((me.end - me.start) * offset);
},
getPixelForTick: function(index) {
return this.getPixelForValue(this.ticksAsNumbers[index]);
}
});
Chart.scaleService.registerScaleType('linear', LinearScale, defaultConfig);
};
},{}],45:[function(require,module,exports){
'use strict';
module.exports = function(Chart) {
var helpers = Chart.helpers,
noop = helpers.noop;
Chart.LinearScaleBase = Chart.Scale.extend({
handleTickRangeOptions: function() {
var me = this;
var opts = me.options;
var tickOpts = opts.ticks;
// If we are forcing it to begin at 0, but 0 will already be rendered on the chart,
// do nothing since that would make the chart weird. If the user really wants a weird chart
// axis, they can manually override it
if (tickOpts.beginAtZero) {
var minSign = helpers.sign(me.min);
var maxSign = helpers.sign(me.max);
if (minSign < 0 && maxSign < 0) {
// move the top up to 0
me.max = 0;
} else if (minSign > 0 && maxSign > 0) {
// move the bottom down to 0
me.min = 0;
}
}
if (tickOpts.min !== undefined) {
me.min = tickOpts.min;
} else if (tickOpts.suggestedMin !== undefined) {
me.min = Math.min(me.min, tickOpts.suggestedMin);
}
if (tickOpts.max !== undefined) {
me.max = tickOpts.max;
} else if (tickOpts.suggestedMax !== undefined) {
me.max = Math.max(me.max, tickOpts.suggestedMax);
}
if (me.min === me.max) {
me.max++;
if (!tickOpts.beginAtZero) {
me.min--;
}
}
},
getTickLimit: noop,
handleDirectionalChanges: noop,
buildTicks: function() {
var me = this;
var opts = me.options;
var tickOpts = opts.ticks;
// Figure out what the max number of ticks we can support it is based on the size of
// the axis area. For now, we say that the minimum tick spacing in pixels must be 50
// We also limit the maximum number of ticks to 11 which gives a nice 10 squares on
// the graph. Make sure we always have at least 2 ticks
var maxTicks = me.getTickLimit();
maxTicks = Math.max(2, maxTicks);
var numericGeneratorOptions = {
maxTicks: maxTicks,
min: tickOpts.min,
max: tickOpts.max,
stepSize: helpers.getValueOrDefault(tickOpts.fixedStepSize, tickOpts.stepSize)
};
var ticks = me.ticks = Chart.Ticks.generators.linear(numericGeneratorOptions, me);
me.handleDirectionalChanges();
// At this point, we need to update our max and min given the tick values since we have expanded the
// range of the scale
me.max = helpers.max(ticks);
me.min = helpers.min(ticks);
if (tickOpts.reverse) {
ticks.reverse();
me.start = me.max;
me.end = me.min;
} else {
me.start = me.min;
me.end = me.max;
}
},
convertTicksToLabels: function() {
var me = this;
me.ticksAsNumbers = me.ticks.slice();
me.zeroLineIndex = me.ticks.indexOf(0);
Chart.Scale.prototype.convertTicksToLabels.call(me);
}
});
};
},{}],46:[function(require,module,exports){
'use strict';
module.exports = function(Chart) {
var helpers = Chart.helpers;
var defaultConfig = {
position: 'left',
// label settings
ticks: {
callback: Chart.Ticks.formatters.logarithmic
}
};
var LogarithmicScale = Chart.Scale.extend({
determineDataLimits: function() {
var me = this;
var opts = me.options;
var tickOpts = opts.ticks;
var chart = me.chart;
var data = chart.data;
var datasets = data.datasets;
var getValueOrDefault = helpers.getValueOrDefault;
var isHorizontal = me.isHorizontal();
function IDMatches(meta) {
return isHorizontal ? meta.xAxisID === me.id : meta.yAxisID === me.id;
}
// Calculate Range
me.min = null;
me.max = null;
me.minNotZero = null;
var hasStacks = opts.stacked;
if (hasStacks === undefined) {
helpers.each(datasets, function(dataset, datasetIndex) {
if (hasStacks) {
return;
}
var meta = chart.getDatasetMeta(datasetIndex);
if (chart.isDatasetVisible(datasetIndex) && IDMatches(meta) &&
meta.stack !== undefined) {
hasStacks = true;
}
});
}
if (opts.stacked || hasStacks) {
var valuesPerStack = {};
helpers.each(datasets, function(dataset, datasetIndex) {
var meta = chart.getDatasetMeta(datasetIndex);
var key = [
meta.type,
// we have a separate stack for stack=undefined datasets when the opts.stacked is undefined
((opts.stacked === undefined && meta.stack === undefined) ? datasetIndex : ''),
meta.stack
].join('.');
if (chart.isDatasetVisible(datasetIndex) && IDMatches(meta)) {
if (valuesPerStack[key] === undefined) {
valuesPerStack[key] = [];
}
helpers.each(dataset.data, function(rawValue, index) {
var values = valuesPerStack[key];
var value = +me.getRightValue(rawValue);
if (isNaN(value) || meta.data[index].hidden) {
return;
}
values[index] = values[index] || 0;
if (opts.relativePoints) {
values[index] = 100;
} else {
// Don't need to split positive and negative since the log scale can't handle a 0 crossing
values[index] += value;
}
});
}
});
helpers.each(valuesPerStack, function(valuesForType) {
var minVal = helpers.min(valuesForType);
var maxVal = helpers.max(valuesForType);
me.min = me.min === null ? minVal : Math.min(me.min, minVal);
me.max = me.max === null ? maxVal : Math.max(me.max, maxVal);
});
} else {
helpers.each(datasets, function(dataset, datasetIndex) {
var meta = chart.getDatasetMeta(datasetIndex);
if (chart.isDatasetVisible(datasetIndex) && IDMatches(meta)) {
helpers.each(dataset.data, function(rawValue, index) {
var value = +me.getRightValue(rawValue);
if (isNaN(value) || meta.data[index].hidden) {
return;
}
if (me.min === null) {
me.min = value;
} else if (value < me.min) {
me.min = value;
}
if (me.max === null) {
me.max = value;
} else if (value > me.max) {
me.max = value;
}
if (value !== 0 && (me.minNotZero === null || value < me.minNotZero)) {
me.minNotZero = value;
}
});
}
});
}
me.min = getValueOrDefault(tickOpts.min, me.min);
me.max = getValueOrDefault(tickOpts.max, me.max);
if (me.min === me.max) {
if (me.min !== 0 && me.min !== null) {
me.min = Math.pow(10, Math.floor(helpers.log10(me.min)) - 1);
me.max = Math.pow(10, Math.floor(helpers.log10(me.max)) + 1);
} else {
me.min = 1;
me.max = 10;
}
}
},
buildTicks: function() {
var me = this;
var opts = me.options;
var tickOpts = opts.ticks;
var generationOptions = {
min: tickOpts.min,
max: tickOpts.max
};
var ticks = me.ticks = Chart.Ticks.generators.logarithmic(generationOptions, me);
if (!me.isHorizontal()) {
// We are in a vertical orientation. The top value is the highest. So reverse the array
ticks.reverse();
}
// At this point, we need to update our max and min given the tick values since we have expanded the
// range of the scale
me.max = helpers.max(ticks);
me.min = helpers.min(ticks);
if (tickOpts.reverse) {
ticks.reverse();
me.start = me.max;
me.end = me.min;
} else {
me.start = me.min;
me.end = me.max;
}
},
convertTicksToLabels: function() {
this.tickValues = this.ticks.slice();
Chart.Scale.prototype.convertTicksToLabels.call(this);
},
// Get the correct tooltip label
getLabelForIndex: function(index, datasetIndex) {
return +this.getRightValue(this.chart.data.datasets[datasetIndex].data[index]);
},
getPixelForTick: function(index) {
return this.getPixelForValue(this.tickValues[index]);
},
getPixelForValue: function(value) {
var me = this;
var innerDimension;
var pixel;
var start = me.start;
var newVal = +me.getRightValue(value);
var range;
var opts = me.options;
var tickOpts = opts.ticks;
if (me.isHorizontal()) {
range = helpers.log10(me.end) - helpers.log10(start); // todo: if start === 0
if (newVal === 0) {
pixel = me.left;
} else {
innerDimension = me.width;
pixel = me.left + (innerDimension / range * (helpers.log10(newVal) - helpers.log10(start)));
}
} else {
// Bottom - top since pixels increase downward on a screen
innerDimension = me.height;
if (start === 0 && !tickOpts.reverse) {
range = helpers.log10(me.end) - helpers.log10(me.minNotZero);
if (newVal === start) {
pixel = me.bottom;
} else if (newVal === me.minNotZero) {
pixel = me.bottom - innerDimension * 0.02;
} else {
pixel = me.bottom - innerDimension * 0.02 - (innerDimension * 0.98/ range * (helpers.log10(newVal)-helpers.log10(me.minNotZero)));
}
} else if (me.end === 0 && tickOpts.reverse) {
range = helpers.log10(me.start) - helpers.log10(me.minNotZero);
if (newVal === me.end) {
pixel = me.top;
} else if (newVal === me.minNotZero) {
pixel = me.top + innerDimension * 0.02;
} else {
pixel = me.top + innerDimension * 0.02 + (innerDimension * 0.98/ range * (helpers.log10(newVal)-helpers.log10(me.minNotZero)));
}
} else {
range = helpers.log10(me.end) - helpers.log10(start);
innerDimension = me.height;
pixel = me.bottom - (innerDimension / range * (helpers.log10(newVal) - helpers.log10(start)));
}
}
return pixel;
},
getValueForPixel: function(pixel) {
var me = this;
var range = helpers.log10(me.end) - helpers.log10(me.start);
var value, innerDimension;
if (me.isHorizontal()) {
innerDimension = me.width;
value = me.start * Math.pow(10, (pixel - me.left) * range / innerDimension);
} else { // todo: if start === 0
innerDimension = me.height;
value = Math.pow(10, (me.bottom - pixel) * range / innerDimension) / me.start;
}
return value;
}
});
Chart.scaleService.registerScaleType('logarithmic', LogarithmicScale, defaultConfig);
};
},{}],47:[function(require,module,exports){
'use strict';
module.exports = function(Chart) {
var helpers = Chart.helpers;
var globalDefaults = Chart.defaults.global;
var defaultConfig = {
display: true,
// Boolean - Whether to animate scaling the chart from the centre
animate: true,
lineArc: false,
position: 'chartArea',
angleLines: {
display: true,
color: 'rgba(0, 0, 0, 0.1)',
lineWidth: 1
},
// label settings
ticks: {
// Boolean - Show a backdrop to the scale label
showLabelBackdrop: true,
// String - The colour of the label backdrop
backdropColor: 'rgba(255,255,255,0.75)',
// Number - The backdrop padding above & below the label in pixels
backdropPaddingY: 2,
// Number - The backdrop padding to the side of the label in pixels
backdropPaddingX: 2,
callback: Chart.Ticks.formatters.linear
},
pointLabels: {
// Number - Point label font size in pixels
fontSize: 10,
// Function - Used to convert point labels
callback: function(label) {
return label;
}
}
};
function getValueCount(scale) {
return !scale.options.lineArc ? scale.chart.data.labels.length : 0;
}
function getPointLabelFontOptions(scale) {
var pointLabelOptions = scale.options.pointLabels;
var fontSize = helpers.getValueOrDefault(pointLabelOptions.fontSize, globalDefaults.defaultFontSize);
var fontStyle = helpers.getValueOrDefault(pointLabelOptions.fontStyle, globalDefaults.defaultFontStyle);
var fontFamily = helpers.getValueOrDefault(pointLabelOptions.fontFamily, globalDefaults.defaultFontFamily);
var font = helpers.fontString(fontSize, fontStyle, fontFamily);
return {
size: fontSize,
style: fontStyle,
family: fontFamily,
font: font
};
}
function measureLabelSize(ctx, fontSize, label) {
if (helpers.isArray(label)) {
return {
w: helpers.longestText(ctx, ctx.font, label),
h: (label.length * fontSize) + ((label.length - 1) * 1.5 * fontSize)
};
}
return {
w: ctx.measureText(label).width,
h: fontSize
};
}
function determineLimits(angle, pos, size, min, max) {
if (angle === min || angle === max) {
return {
start: pos - (size / 2),
end: pos + (size / 2)
};
} else if (angle < min || angle > max) {
return {
start: pos - size - 5,
end: pos
};
}
return {
start: pos,
end: pos + size + 5
};
}
/**
* Helper function to fit a radial linear scale with point labels
*/
function fitWithPointLabels(scale) {
/*
* Right, this is really confusing and there is a lot of maths going on here
* The gist of the problem is here: https://gist.github.com/nnnick/696cc9c55f4b0beb8fe9
*
* Reaction: https://dl.dropboxusercontent.com/u/34601363/toomuchscience.gif
*
* Solution:
*
* We assume the radius of the polygon is half the size of the canvas at first
* at each index we check if the text overlaps.
*
* Where it does, we store that angle and that index.
*
* After finding the largest index and angle we calculate how much we need to remove
* from the shape radius to move the point inwards by that x.
*
* We average the left and right distances to get the maximum shape radius that can fit in the box
* along with labels.
*
* Once we have that, we can find the centre point for the chart, by taking the x text protrusion
* on each side, removing that from the size, halving it and adding the left x protrusion width.
*
* This will mean we have a shape fitted to the canvas, as large as it can be with the labels
* and position it in the most space efficient manner
*
* https://dl.dropboxusercontent.com/u/34601363/yeahscience.gif
*/
var plFont = getPointLabelFontOptions(scale);
// Get maximum radius of the polygon. Either half the height (minus the text width) or half the width.
// Use this to calculate the offset + change. - Make sure L/R protrusion is at least 0 to stop issues with centre points
var largestPossibleRadius = Math.min(scale.height / 2, scale.width / 2);
var furthestLimits = {
l: scale.width,
r: 0,
t: scale.height,
b: 0
};
var furthestAngles = {};
var i;
var textSize;
var pointPosition;
scale.ctx.font = plFont.font;
scale._pointLabelSizes = [];
var valueCount = getValueCount(scale);
for (i = 0; i < valueCount; i++) {
pointPosition = scale.getPointPosition(i, largestPossibleRadius);
textSize = measureLabelSize(scale.ctx, plFont.size, scale.pointLabels[i] || '');
scale._pointLabelSizes[i] = textSize;
// Add quarter circle to make degree 0 mean top of circle
var angleRadians = scale.getIndexAngle(i);
var angle = helpers.toDegrees(angleRadians) % 360;
var hLimits = determineLimits(angle, pointPosition.x, textSize.w, 0, 180);
var vLimits = determineLimits(angle, pointPosition.y, textSize.h, 90, 270);
if (hLimits.start < furthestLimits.l) {
furthestLimits.l = hLimits.start;
furthestAngles.l = angleRadians;
}
if (hLimits.end > furthestLimits.r) {
furthestLimits.r = hLimits.end;
furthestAngles.r = angleRadians;
}
if (vLimits.start < furthestLimits.t) {
furthestLimits.t = vLimits.start;
furthestAngles.t = angleRadians;
}
if (vLimits.end > furthestLimits.b) {
furthestLimits.b = vLimits.end;
furthestAngles.b = angleRadians;
}
}
scale.setReductions(largestPossibleRadius, furthestLimits, furthestAngles);
}
/**
* Helper function to fit a radial linear scale with no point labels
*/
function fit(scale) {
var largestPossibleRadius = Math.min(scale.height / 2, scale.width / 2);
scale.drawingArea = Math.round(largestPossibleRadius);
scale.setCenterPoint(0, 0, 0, 0);
}
function getTextAlignForAngle(angle) {
if (angle === 0 || angle === 180) {
return 'center';
} else if (angle < 180) {
return 'left';
}
return 'right';
}
function fillText(ctx, text, position, fontSize) {
if (helpers.isArray(text)) {
var y = position.y;
var spacing = 1.5 * fontSize;
for (var i = 0; i < text.length; ++i) {
ctx.fillText(text[i], position.x, y);
y+= spacing;
}
} else {
ctx.fillText(text, position.x, position.y);
}
}
function adjustPointPositionForLabelHeight(angle, textSize, position) {
if (angle === 90 || angle === 270) {
position.y -= (textSize.h / 2);
} else if (angle > 270 || angle < 90) {
position.y -= textSize.h;
}
}
function drawPointLabels(scale) {
var ctx = scale.ctx;
var getValueOrDefault = helpers.getValueOrDefault;
var opts = scale.options;
var angleLineOpts = opts.angleLines;
var pointLabelOpts = opts.pointLabels;
ctx.lineWidth = angleLineOpts.lineWidth;
ctx.strokeStyle = angleLineOpts.color;
var outerDistance = scale.getDistanceFromCenterForValue(opts.reverse ? scale.min : scale.max);
// Point Label Font
var plFont = getPointLabelFontOptions(scale);
ctx.textBaseline = 'top';
for (var i = getValueCount(scale) - 1; i >= 0; i--) {
if (angleLineOpts.display) {
var outerPosition = scale.getPointPosition(i, outerDistance);
ctx.beginPath();
ctx.moveTo(scale.xCenter, scale.yCenter);
ctx.lineTo(outerPosition.x, outerPosition.y);
ctx.stroke();
ctx.closePath();
}
// Extra 3px out for some label spacing
var pointLabelPosition = scale.getPointPosition(i, outerDistance + 5);
// Keep this in loop since we may support array properties here
var pointLabelFontColor = getValueOrDefault(pointLabelOpts.fontColor, globalDefaults.defaultFontColor);
ctx.font = plFont.font;
ctx.fillStyle = pointLabelFontColor;
var angleRadians = scale.getIndexAngle(i);
var angle = helpers.toDegrees(angleRadians);
ctx.textAlign = getTextAlignForAngle(angle);
adjustPointPositionForLabelHeight(angle, scale._pointLabelSizes[i], pointLabelPosition);
fillText(ctx, scale.pointLabels[i] || '', pointLabelPosition, plFont.size);
}
}
function drawRadiusLine(scale, gridLineOpts, radius, index) {
var ctx = scale.ctx;
ctx.strokeStyle = helpers.getValueAtIndexOrDefault(gridLineOpts.color, index - 1);
ctx.lineWidth = helpers.getValueAtIndexOrDefault(gridLineOpts.lineWidth, index - 1);
if (scale.options.lineArc) {
// Draw circular arcs between the points
ctx.beginPath();
ctx.arc(scale.xCenter, scale.yCenter, radius, 0, Math.PI * 2);
ctx.closePath();
ctx.stroke();
} else {
// Draw straight lines connecting each index
var valueCount = getValueCount(scale);
if (valueCount === 0) {
return;
}
ctx.beginPath();
var pointPosition = scale.getPointPosition(0, radius);
ctx.moveTo(pointPosition.x, pointPosition.y);
for (var i = 1; i < valueCount; i++) {
pointPosition = scale.getPointPosition(i, radius);
ctx.lineTo(pointPosition.x, pointPosition.y);
}
ctx.closePath();
ctx.stroke();
}
}
function numberOrZero(param) {
return helpers.isNumber(param) ? param : 0;
}
var LinearRadialScale = Chart.LinearScaleBase.extend({
setDimensions: function() {
var me = this;
var opts = me.options;
var tickOpts = opts.ticks;
// Set the unconstrained dimension before label rotation
me.width = me.maxWidth;
me.height = me.maxHeight;
me.xCenter = Math.round(me.width / 2);
me.yCenter = Math.round(me.height / 2);
var minSize = helpers.min([me.height, me.width]);
var tickFontSize = helpers.getValueOrDefault(tickOpts.fontSize, globalDefaults.defaultFontSize);
me.drawingArea = opts.display ? (minSize / 2) - (tickFontSize / 2 + tickOpts.backdropPaddingY) : (minSize / 2);
},
determineDataLimits: function() {
var me = this;
var chart = me.chart;
var min = Number.POSITIVE_INFINITY;
var max = Number.NEGATIVE_INFINITY;
helpers.each(chart.data.datasets, function(dataset, datasetIndex) {
if (chart.isDatasetVisible(datasetIndex)) {
var meta = chart.getDatasetMeta(datasetIndex);
helpers.each(dataset.data, function(rawValue, index) {
var value = +me.getRightValue(rawValue);
if (isNaN(value) || meta.data[index].hidden) {
return;
}
min = Math.min(value, min);
max = Math.max(value, max);
});
}
});
me.min = (min === Number.POSITIVE_INFINITY ? 0 : min);
me.max = (max === Number.NEGATIVE_INFINITY ? 0 : max);
// Common base implementation to handle ticks.min, ticks.max, ticks.beginAtZero
me.handleTickRangeOptions();
},
getTickLimit: function() {
var tickOpts = this.options.ticks;
var tickFontSize = helpers.getValueOrDefault(tickOpts.fontSize, globalDefaults.defaultFontSize);
return Math.min(tickOpts.maxTicksLimit ? tickOpts.maxTicksLimit : 11, Math.ceil(this.drawingArea / (1.5 * tickFontSize)));
},
convertTicksToLabels: function() {
var me = this;
Chart.LinearScaleBase.prototype.convertTicksToLabels.call(me);
// Point labels
me.pointLabels = me.chart.data.labels.map(me.options.pointLabels.callback, me);
},
getLabelForIndex: function(index, datasetIndex) {
return +this.getRightValue(this.chart.data.datasets[datasetIndex].data[index]);
},
fit: function() {
if (this.options.lineArc) {
fit(this);
} else {
fitWithPointLabels(this);
}
},
/**
* Set radius reductions and determine new radius and center point
* @private
*/
setReductions: function(largestPossibleRadius, furthestLimits, furthestAngles) {
var me = this;
var radiusReductionLeft = furthestLimits.l / Math.sin(furthestAngles.l);
var radiusReductionRight = Math.max(furthestLimits.r - me.width, 0) / Math.sin(furthestAngles.r);
var radiusReductionTop = -furthestLimits.t / Math.cos(furthestAngles.t);
var radiusReductionBottom = -Math.max(furthestLimits.b - me.height, 0) / Math.cos(furthestAngles.b);
radiusReductionLeft = numberOrZero(radiusReductionLeft);
radiusReductionRight = numberOrZero(radiusReductionRight);
radiusReductionTop = numberOrZero(radiusReductionTop);
radiusReductionBottom = numberOrZero(radiusReductionBottom);
me.drawingArea = Math.min(
Math.round(largestPossibleRadius - (radiusReductionLeft + radiusReductionRight) / 2),
Math.round(largestPossibleRadius - (radiusReductionTop + radiusReductionBottom) / 2));
me.setCenterPoint(radiusReductionLeft, radiusReductionRight, radiusReductionTop, radiusReductionBottom);
},
setCenterPoint: function(leftMovement, rightMovement, topMovement, bottomMovement) {
var me = this;
var maxRight = me.width - rightMovement - me.drawingArea,
maxLeft = leftMovement + me.drawingArea,
maxTop = topMovement + me.drawingArea,
maxBottom = me.height - bottomMovement - me.drawingArea;
me.xCenter = Math.round(((maxLeft + maxRight) / 2) + me.left);
me.yCenter = Math.round(((maxTop + maxBottom) / 2) + me.top);
},
getIndexAngle: function(index) {
var angleMultiplier = (Math.PI * 2) / getValueCount(this);
var startAngle = this.chart.options && this.chart.options.startAngle ?
this.chart.options.startAngle :
0;
var startAngleRadians = startAngle * Math.PI * 2 / 360;
// Start from the top instead of right, so remove a quarter of the circle
return index * angleMultiplier + startAngleRadians;
},
getDistanceFromCenterForValue: function(value) {
var me = this;
if (value === null) {
return 0; // null always in center
}
// Take into account half font size + the yPadding of the top value
var scalingFactor = me.drawingArea / (me.max - me.min);
if (me.options.reverse) {
return (me.max - value) * scalingFactor;
}
return (value - me.min) * scalingFactor;
},
getPointPosition: function(index, distanceFromCenter) {
var me = this;
var thisAngle = me.getIndexAngle(index) - (Math.PI / 2);
return {
x: Math.round(Math.cos(thisAngle) * distanceFromCenter) + me.xCenter,
y: Math.round(Math.sin(thisAngle) * distanceFromCenter) + me.yCenter
};
},
getPointPositionForValue: function(index, value) {
return this.getPointPosition(index, this.getDistanceFromCenterForValue(value));
},
getBasePosition: function() {
var me = this;
var min = me.min;
var max = me.max;
return me.getPointPositionForValue(0,
me.beginAtZero? 0:
min < 0 && max < 0? max :
min > 0 && max > 0? min :
0);
},
draw: function() {
var me = this;
var opts = me.options;
var gridLineOpts = opts.gridLines;
var tickOpts = opts.ticks;
var getValueOrDefault = helpers.getValueOrDefault;
if (opts.display) {
var ctx = me.ctx;
// Tick Font
var tickFontSize = getValueOrDefault(tickOpts.fontSize, globalDefaults.defaultFontSize);
var tickFontStyle = getValueOrDefault(tickOpts.fontStyle, globalDefaults.defaultFontStyle);
var tickFontFamily = getValueOrDefault(tickOpts.fontFamily, globalDefaults.defaultFontFamily);
var tickLabelFont = helpers.fontString(tickFontSize, tickFontStyle, tickFontFamily);
helpers.each(me.ticks, function(label, index) {
// Don't draw a centre value (if it is minimum)
if (index > 0 || opts.reverse) {
var yCenterOffset = me.getDistanceFromCenterForValue(me.ticksAsNumbers[index]);
var yHeight = me.yCenter - yCenterOffset;
// Draw circular lines around the scale
if (gridLineOpts.display && index !== 0) {
drawRadiusLine(me, gridLineOpts, yCenterOffset, index);
}
if (tickOpts.display) {
var tickFontColor = getValueOrDefault(tickOpts.fontColor, globalDefaults.defaultFontColor);
ctx.font = tickLabelFont;
if (tickOpts.showLabelBackdrop) {
var labelWidth = ctx.measureText(label).width;
ctx.fillStyle = tickOpts.backdropColor;
ctx.fillRect(
me.xCenter - labelWidth / 2 - tickOpts.backdropPaddingX,
yHeight - tickFontSize / 2 - tickOpts.backdropPaddingY,
labelWidth + tickOpts.backdropPaddingX * 2,
tickFontSize + tickOpts.backdropPaddingY * 2
);
}
ctx.textAlign = 'center';
ctx.textBaseline = 'middle';
ctx.fillStyle = tickFontColor;
ctx.fillText(label, me.xCenter, yHeight);
}
}
});
if (!opts.lineArc) {
drawPointLabels(me);
}
}
}
});
Chart.scaleService.registerScaleType('radialLinear', LinearRadialScale, defaultConfig);
};
},{}],48:[function(require,module,exports){
/* global window: false */
'use strict';
var moment = require(1);
moment = typeof(moment) === 'function' ? moment : window.moment;
module.exports = function(Chart) {
var helpers = Chart.helpers;
var time = {
units: [{
name: 'millisecond',
steps: [1, 2, 5, 10, 20, 50, 100, 250, 500]
}, {
name: 'second',
steps: [1, 2, 5, 10, 30]
}, {
name: 'minute',
steps: [1, 2, 5, 10, 30]
}, {
name: 'hour',
steps: [1, 2, 3, 6, 12]
}, {
name: 'day',
steps: [1, 2, 5]
}, {
name: 'week',
maxStep: 4
}, {
name: 'month',
maxStep: 3
}, {
name: 'quarter',
maxStep: 4
}, {
name: 'year',
maxStep: false
}]
};
var defaultConfig = {
position: 'bottom',
time: {
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
format: false, // DEPRECATED false == date objects, moment object, callback or a pattern string from http://momentjs.com/docs/#/parsing/string-format/
unit: false, // false == automatic or override with week, month, year, etc.
round: false, // none, or override with week, month, year, etc.
displayFormat: false, // DEPRECATED
isoWeekday: false, // override week start day - see http://momentjs.com/docs/#/get-set/iso-weekday/
minUnit: 'millisecond',
// defaults to unit's corresponding unitFormat below or override using pattern string from http://momentjs.com/docs/#/displaying/format/
displayFormats: {
millisecond: 'h:mm:ss.SSS a', // 11:20:01.123 AM,
second: 'h:mm:ss a', // 11:20:01 AM
minute: 'h:mm:ss a', // 11:20:01 AM
hour: 'MMM D, hA', // Sept 4, 5PM
day: 'll', // Sep 4 2015
week: 'll', // Week 46, or maybe "[W]WW - YYYY" ?
month: 'MMM YYYY', // Sept 2015
quarter: '[Q]Q - YYYY', // Q3
year: 'YYYY' // 2015
}
},
ticks: {
autoSkip: false
}
};
var TimeScale = Chart.Scale.extend({
initialize: function() {
if (!moment) {
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');
}
Chart.Scale.prototype.initialize.call(this);
},
getLabelMoment: function(datasetIndex, index) {
if (datasetIndex === null || index === null) {
return null;
}
if (typeof this.labelMoments[datasetIndex] !== 'undefined') {
return this.labelMoments[datasetIndex][index];
}
return null;
},
getLabelDiff: function(datasetIndex, index) {
var me = this;
if (datasetIndex === null || index === null) {
return null;
}
if (me.labelDiffs === undefined) {
me.buildLabelDiffs();
}
if (typeof me.labelDiffs[datasetIndex] !== 'undefined') {
return me.labelDiffs[datasetIndex][index];
}
return null;
},
getMomentStartOf: function(tick) {
var me = this;
if (me.options.time.unit === 'week' && me.options.time.isoWeekday !== false) {
return tick.clone().startOf('isoWeek').isoWeekday(me.options.time.isoWeekday);
}
return tick.clone().startOf(me.tickUnit);
},
determineDataLimits: function() {
var me = this;
me.labelMoments = [];
// Only parse these once. If the dataset does not have data as x,y pairs, we will use
// these
var scaleLabelMoments = [];
if (me.chart.data.labels && me.chart.data.labels.length > 0) {
helpers.each(me.chart.data.labels, function(label) {
var labelMoment = me.parseTime(label);
if (labelMoment.isValid()) {
if (me.options.time.round) {
labelMoment.startOf(me.options.time.round);
}
scaleLabelMoments.push(labelMoment);
}
}, me);
me.firstTick = moment.min.call(me, scaleLabelMoments);
me.lastTick = moment.max.call(me, scaleLabelMoments);
} else {
me.firstTick = null;
me.lastTick = null;
}
helpers.each(me.chart.data.datasets, function(dataset, datasetIndex) {
var momentsForDataset = [];
var datasetVisible = me.chart.isDatasetVisible(datasetIndex);
if (typeof dataset.data[0] === 'object' && dataset.data[0] !== null) {
helpers.each(dataset.data, function(value) {
var labelMoment = me.parseTime(me.getRightValue(value));
if (labelMoment.isValid()) {
if (me.options.time.round) {
labelMoment.startOf(me.options.time.round);
}
momentsForDataset.push(labelMoment);
if (datasetVisible) {
// May have gone outside the scale ranges, make sure we keep the first and last ticks updated
me.firstTick = me.firstTick !== null ? moment.min(me.firstTick, labelMoment) : labelMoment;
me.lastTick = me.lastTick !== null ? moment.max(me.lastTick, labelMoment) : labelMoment;
}
}
}, me);
} else {
// We have no labels. Use the ones from the scale
momentsForDataset = scaleLabelMoments;
}
me.labelMoments.push(momentsForDataset);
}, me);
// Set these after we've done all the data
if (me.options.time.min) {
me.firstTick = me.parseTime(me.options.time.min);
}
if (me.options.time.max) {
me.lastTick = me.parseTime(me.options.time.max);
}
// We will modify these, so clone for later
me.firstTick = (me.firstTick || moment()).clone();
me.lastTick = (me.lastTick || moment()).clone();
},
buildLabelDiffs: function() {
var me = this;
me.labelDiffs = [];
var scaleLabelDiffs = [];
// Parse common labels once
if (me.chart.data.labels && me.chart.data.labels.length > 0) {
helpers.each(me.chart.data.labels, function(label) {
var labelMoment = me.parseTime(label);
if (labelMoment.isValid()) {
if (me.options.time.round) {
labelMoment.startOf(me.options.time.round);
}
scaleLabelDiffs.push(labelMoment.diff(me.firstTick, me.tickUnit, true));
}
}, me);
}
helpers.each(me.chart.data.datasets, function(dataset) {
var diffsForDataset = [];
if (typeof dataset.data[0] === 'object' && dataset.data[0] !== null) {
helpers.each(dataset.data, function(value) {
var labelMoment = me.parseTime(me.getRightValue(value));
if (labelMoment.isValid()) {
if (me.options.time.round) {
labelMoment.startOf(me.options.time.round);
}
diffsForDataset.push(labelMoment.diff(me.firstTick, me.tickUnit, true));
}
}, me);
} else {
// We have no labels. Use common ones
diffsForDataset = scaleLabelDiffs;
}
me.labelDiffs.push(diffsForDataset);
}, me);
},
buildTicks: function() {
var me = this;
me.ctx.save();
var tickFontSize = helpers.getValueOrDefault(me.options.ticks.fontSize, Chart.defaults.global.defaultFontSize);
var tickFontStyle = helpers.getValueOrDefault(me.options.ticks.fontStyle, Chart.defaults.global.defaultFontStyle);
var tickFontFamily = helpers.getValueOrDefault(me.options.ticks.fontFamily, Chart.defaults.global.defaultFontFamily);
var tickLabelFont = helpers.fontString(tickFontSize, tickFontStyle, tickFontFamily);
me.ctx.font = tickLabelFont;
me.ticks = [];
me.unitScale = 1; // How much we scale the unit by, ie 2 means 2x unit per step
me.scaleSizeInUnits = 0; // How large the scale is in the base unit (seconds, minutes, etc)
// Set unit override if applicable
if (me.options.time.unit) {
me.tickUnit = me.options.time.unit || 'day';
me.displayFormat = me.options.time.displayFormats[me.tickUnit];
me.scaleSizeInUnits = me.lastTick.diff(me.firstTick, me.tickUnit, true);
me.unitScale = helpers.getValueOrDefault(me.options.time.unitStepSize, 1);
} else {
// Determine the smallest needed unit of the time
var innerWidth = me.isHorizontal() ? me.width : me.height;
// Crude approximation of what the label length might be
var tempFirstLabel = me.tickFormatFunction(me.firstTick, 0, []);
var tickLabelWidth = me.ctx.measureText(tempFirstLabel).width;
var cosRotation = Math.cos(helpers.toRadians(me.options.ticks.maxRotation));
var sinRotation = Math.sin(helpers.toRadians(me.options.ticks.maxRotation));
tickLabelWidth = (tickLabelWidth * cosRotation) + (tickFontSize * sinRotation);
var labelCapacity = innerWidth / (tickLabelWidth);
// Start as small as possible
me.tickUnit = me.options.time.minUnit;
me.scaleSizeInUnits = me.lastTick.diff(me.firstTick, me.tickUnit, true);
me.displayFormat = me.options.time.displayFormats[me.tickUnit];
var unitDefinitionIndex = 0;
var unitDefinition = time.units[unitDefinitionIndex];
// While we aren't ideal and we don't have units left
while (unitDefinitionIndex < time.units.length) {
// Can we scale this unit. If `false` we can scale infinitely
me.unitScale = 1;
if (helpers.isArray(unitDefinition.steps) && Math.ceil(me.scaleSizeInUnits / labelCapacity) < helpers.max(unitDefinition.steps)) {
// Use one of the predefined steps
for (var idx = 0; idx < unitDefinition.steps.length; ++idx) {
if (unitDefinition.steps[idx] >= Math.ceil(me.scaleSizeInUnits / labelCapacity)) {
me.unitScale = helpers.getValueOrDefault(me.options.time.unitStepSize, unitDefinition.steps[idx]);
break;
}
}
break;
} else if ((unitDefinition.maxStep === false) || (Math.ceil(me.scaleSizeInUnits / labelCapacity) < unitDefinition.maxStep)) {
// We have a max step. Scale this unit
me.unitScale = helpers.getValueOrDefault(me.options.time.unitStepSize, Math.ceil(me.scaleSizeInUnits / labelCapacity));
break;
} else {
// Move to the next unit up
++unitDefinitionIndex;
unitDefinition = time.units[unitDefinitionIndex];
me.tickUnit = unitDefinition.name;
var leadingUnitBuffer = me.firstTick.diff(me.getMomentStartOf(me.firstTick), me.tickUnit, true);
var trailingUnitBuffer = me.getMomentStartOf(me.lastTick.clone().add(1, me.tickUnit)).diff(me.lastTick, me.tickUnit, true);
me.scaleSizeInUnits = me.lastTick.diff(me.firstTick, me.tickUnit, true) + leadingUnitBuffer + trailingUnitBuffer;
me.displayFormat = me.options.time.displayFormats[unitDefinition.name];
}
}
}
var roundedStart;
// Only round the first tick if we have no hard minimum
if (!me.options.time.min) {
me.firstTick = me.getMomentStartOf(me.firstTick);
roundedStart = me.firstTick;
} else {
roundedStart = me.getMomentStartOf(me.firstTick);
}
// Only round the last tick if we have no hard maximum
if (!me.options.time.max) {
var roundedEnd = me.getMomentStartOf(me.lastTick);
var delta = roundedEnd.diff(me.lastTick, me.tickUnit, true);
if (delta < 0) {
// Do not use end of because we need me to be in the next time unit
me.lastTick = me.getMomentStartOf(me.lastTick.add(1, me.tickUnit));
} else if (delta >= 0) {
me.lastTick = roundedEnd;
}
me.scaleSizeInUnits = me.lastTick.diff(me.firstTick, me.tickUnit, true);
}
// Tick displayFormat override
if (me.options.time.displayFormat) {
me.displayFormat = me.options.time.displayFormat;
}
// first tick. will have been rounded correctly if options.time.min is not specified
me.ticks.push(me.firstTick.clone());
// For every unit in between the first and last moment, create a moment and add it to the ticks tick
for (var i = me.unitScale; i <= me.scaleSizeInUnits; i += me.unitScale) {
var newTick = roundedStart.clone().add(i, me.tickUnit);
// Are we greater than the max time
if (me.options.time.max && newTick.diff(me.lastTick, me.tickUnit, true) >= 0) {
break;
}
me.ticks.push(newTick);
}
// Always show the right tick
var diff = me.ticks[me.ticks.length - 1].diff(me.lastTick, me.tickUnit);
if (diff !== 0 || me.scaleSizeInUnits === 0) {
// this is a weird case. If the <max> option is the same as the end option, we can't just diff the times because the tick was created from the roundedStart
// but the last tick was not rounded.
if (me.options.time.max) {
me.ticks.push(me.lastTick.clone());
me.scaleSizeInUnits = me.lastTick.diff(me.ticks[0], me.tickUnit, true);
} else {
// me.ticks.push(me.lastTick.clone());
// me.scaleSizeInUnits = me.lastTick.diff(me.firstTick, me.tickUnit, true);
}
}
me.ctx.restore();
// Invalidate label diffs cache
me.labelDiffs = undefined;
},
// Get tooltip label
getLabelForIndex: function(index, datasetIndex) {
var me = this;
var label = me.chart.data.labels && index < me.chart.data.labels.length ? me.chart.data.labels[index] : '';
var value = me.chart.data.datasets[datasetIndex].data[index];
if (value !== null && typeof value === 'object') {
label = me.getRightValue(value);
}
// Format nicely
if (me.options.time.tooltipFormat) {
label = me.parseTime(label).format(me.options.time.tooltipFormat);
}
return label;
},
// Function to format an individual tick mark
tickFormatFunction: function(tick, index, ticks) {
var formattedTick = tick.format(this.displayFormat);
var tickOpts = this.options.ticks;
var callback = helpers.getValueOrDefault(tickOpts.callback, tickOpts.userCallback);
if (callback) {
return callback(formattedTick, index, ticks);
}
return formattedTick;
},
convertTicksToLabels: function() {
var me = this;
me.tickMoments = me.ticks;
me.ticks = me.ticks.map(me.tickFormatFunction, me);
},
getPixelForValue: function(value, index, datasetIndex) {
var me = this;
var offset = null;
if (index !== undefined && datasetIndex !== undefined) {
offset = me.getLabelDiff(datasetIndex, index);
}
if (offset === null) {
if (!value || !value.isValid) {
// not already a moment object
value = me.parseTime(me.getRightValue(value));
}
if (value && value.isValid && value.isValid()) {
offset = value.diff(me.firstTick, me.tickUnit, true);
}
}
if (offset !== null) {
var decimal = offset !== 0 ? offset / me.scaleSizeInUnits : offset;
if (me.isHorizontal()) {
var valueOffset = (me.width * decimal);
return me.left + Math.round(valueOffset);
}
var heightOffset = (me.height * decimal);
return me.top + Math.round(heightOffset);
}
},
getPixelForTick: function(index) {
return this.getPixelForValue(this.tickMoments[index], null, null);
},
getValueForPixel: function(pixel) {
var me = this;
var innerDimension = me.isHorizontal() ? me.width : me.height;
var offset = (pixel - (me.isHorizontal() ? me.left : me.top)) / innerDimension;
offset *= me.scaleSizeInUnits;
return me.firstTick.clone().add(moment.duration(offset, me.tickUnit).asSeconds(), 'seconds');
},
parseTime: function(label) {
var me = this;
if (typeof me.options.time.parser === 'string') {
return moment(label, me.options.time.parser);
}
if (typeof me.options.time.parser === 'function') {
return me.options.time.parser(label);
}
// Date objects
if (typeof label.getMonth === 'function' || typeof label === 'number') {
return moment(label);
}
// Moment support
if (label.isValid && label.isValid()) {
return label;
}
// Custom parsing (return an instance of moment)
if (typeof me.options.time.format !== 'string' && me.options.time.format.call) {
console.warn('options.time.format is deprecated and replaced by options.time.parser. See http://nnnick.github.io/Chart.js/docs-v2/#scales-time-scale');
return me.options.time.format(label);
}
// Moment format parsing
return moment(label, me.options.time.format);
}
});
Chart.scaleService.registerScaleType('time', TimeScale, defaultConfig);
};
},{"1":1}]},{},[7])(7)
});