crunchy-rocks/clessy
Archived
2
0
Fork 0
Code Issues 1 Pull requests Releases Wiki Activity
This repository has been archived on 2023-07-05. You can view files and clone it, but cannot push or open issues or pull requests.
clessy/stats-web/Chart.js

7211 lines
252 KiB
JavaScript
Raw Normal View History

stats-web: Add webpage
2016-02-11 15:32:04 +00:00
;(function(root, factory) {
if (typeof define === 'function' && define.amd) {
define(['moment'], factory);
} else if (typeof exports === 'object') {
module.exports = factory.call(root,require('moment'));
} else {
root.Chart = factory.call(root,root.moment);
}
}(this, function(moment) {
!function e(r,t,n){function a(i,u){if(!t[i]){if(!r[i]){var l="function"==typeof require&&require;if(!u&&l)return l(i,!0);if(s)return s(i,!0);var h=new Error("Cannot find module '"+i+"'");throw h.code="MODULE_NOT_FOUND",h}var o=t[i]={exports:{}};r[i][0].call(o.exports,function(e){var t=r[i][1][e];return a(t?t:e)},o,o.exports,e,r,t,n)}return t[i].exports}for(var s="function"==typeof require&&require,i=0;i<n.length;i++)a(n[i]);return a}({1:[function(e,r,t){!function(){var t=e("color-convert"),n=e("color-string"),a=function(e){if(e instanceof a)return e;if(!(this instanceof a))return new a(e);if(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},"string"==typeof e){var r=n.getRgba(e);if(r)this.setValues("rgb",r);else if(r=n.getHsla(e))this.setValues("hsl",r);else{if(!(r=n.getHwb(e)))throw new Error('Unable to parse color from string "'+e+'"');this.setValues("hwb",r)}}else if("object"==typeof e){var r=e;if(void 0!==r.r||void 0!==r.red)this.setValues("rgb",r);else if(void 0!==r.l||void 0!==r.lightness)this.setValues("hsl",r);else if(void 0!==r.v||void 0!==r.value)this.setValues("hsv",r);else if(void 0!==r.w||void 0!==r.whiteness)this.setValues("hwb",r);else{if(void 0===r.c&&void 0===r.cyan)throw new Error("Unable to parse color from object "+JSON.stringify(e));this.setValues("cmyk",r)}}};a.prototype={rgb:function(e){return this.setSpace("rgb",arguments)},hsl:function(e){return this.setSpace("hsl",arguments)},hsv:function(e){return this.setSpace("hsv",arguments)},hwb:function(e){return this.setSpace("hwb",arguments)},cmyk:function(e){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(){return 1!==this.values.alpha?this.values.hwb.concat([this.values.alpha]):this.values.hwb},cmykArray:function(){return this.values.cmyk},rgbaArray:function(){var e=this.values.rgb;return e.concat([this.values.alpha])},hslaArray:function(){var e=this.values.hsl;return e.concat([this.values.alpha])},alpha:function(e){return void 0===e?this.values.alpha:(this.setValues("alpha",e),this)},red:function(e){return this.setChannel("rgb",0,e)},green:function(e){return this.setChannel("rgb",1,e)},blue:function(e){return this.setChannel("rgb",2,e)},hue:function(e){return this.setChannel("hsl",0,e)},saturation:function(e){return this.setChannel("hsl",1,e)},lightness:function(e){return this.setChannel("hsl",2,e)},saturationv:function(e){return this.setChannel("hsv",1,e)},whiteness:function(e){return this.setChannel("hwb",1,e)},blackness:function(e){return this.setChannel("hwb",2,e)},value:function(e){return this.setChannel("hsv",2,e)},cyan:function(e){return this.setChannel("cmyk",0,e)},magenta:function(e){return this.setChannel("cmyk",1,e)},yellow:function(e){return this.setChannel("cmyk",2,e)},black:function(e){return this.setChannel("cmyk",3,e)},hexString:function(){return n.hexString(this.values.rgb)},rgbString:function(){return n.rgbString(this.values.rgb,this.values.alpha)},rgbaString:function(){return n.rgbaString(this.values.rgb,this.values.alpha)},percentString:function(){return n.percentString(this.values.rgb,this.values.alpha)},hslString:function(){return n.hslString(this.values.hsl,this.values.alpha)},hslaString:function(){return n.hslaString(this.values.hsl,this.values.alpha)},hwbString:function(){return n.hwbString(this.values.hwb,this.values.alpha)},keyword:function(){return n.keyword(this.values.rgb,this.values.alpha)},rgbNumber:function(){return this.values.rgb[0]<<16|this.values.rgb[1]<<8|this.values.rgb[2]},luminosity:function(){for(var e=this.values.rgb,r=[],t=0;t<e.length;t++){var n=e[t]/255;r[t]=.03928>=n?n/12.92:Math.pow((n+.055)/1.055,2.4)}return.2126*r[0]+.7152*r[1]+.0722*r[2]},contrast:function(e){var r=this.luminosity(),t=e.luminosity();return r>t?(r+.05)/(t+.05):(t+.05)/(r+.05)},level:function(e){var r=this.contrast(e);return r>=7.1?"AAA":r>=4.5?"AA":""},dark:function(){var e=this.values.rgb,r=(299*e[0]+587*e[1]+114*e[2])/1e3;return 128>r},light:function(){return
/*!
* Chart.js
* http://chartjs.org/
* Version: 2.0.0-beta2
*
* Copyright 2015 Nick Downie
* Released under the MIT license
* https://github.com/nnnick/Chart.js/blob/master/LICENSE.md
*/
(function() {
"use strict";
//Declare root variable - window in the browser, global on the server
var root = this,
previous = root.Chart;
//Occupy the global variable of Chart, and create a simple base class
var Chart = function(context, config) {
this.config = config;
// Support a jQuery'd canvas element
if (context.length && context[0].getContext) {
context = context[0];
}
// Support a canvas domnode
if (context.getContext) {
context = context.getContext("2d");
}
this.ctx = context;
this.canvas = context.canvas;
// Figure out what the size of the chart will be.
// If the canvas has a specified width and height, we use those else
// we look to see if the canvas node has a CSS width and height.
// If there is still no height, fill the parent container
this.width = context.canvas.width || parseInt(Chart.helpers.getStyle(context.canvas, 'width')) || Chart.helpers.getMaximumWidth(context.canvas);
this.height = context.canvas.height || parseInt(Chart.helpers.getStyle(context.canvas, 'height')) || Chart.helpers.getMaximumHeight(context.canvas);
this.aspectRatio = this.width / this.height;
if (isNaN(this.aspectRatio) || isFinite(this.aspectRatio) === false) {
// If the canvas has no size, try and figure out what the aspect ratio will be.
// Some charts prefer square canvases (pie, radar, etc). If that is specified, use that
// else use the canvas default ratio of 2
this.aspectRatio = config.aspectRatio !== undefined ? config.aspectRatio : 2;
}
// Store the original style of the element so we can set it back
this.originalCanvasStyleWidth = context.canvas.style.width;
this.originalCanvasStyleHeight = context.canvas.style.height;
// High pixel density displays - multiply the size of the canvas height/width by the device pixel ratio, then scale.
Chart.helpers.retinaScale(this);
if (config) {
this.controller = new Chart.Controller(this);
}
// Always bind this so that if the responsive state changes we still work
var _this = this;
Chart.helpers.addResizeListener(context.canvas.parentNode, function() {
if (_this.controller && _this.controller.config.options.responsive) {
_this.controller.resize();
}
});
return this.controller ? this.controller : this;
};
//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: 'single',
animationDuration: 400,
},
onClick: null,
defaultColor: 'rgba(0,0,0,0.1)',
// 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 + '">');
if (chart.data.datasets[i].label) {
text.push(chart.data.datasets[i].label);
}
text.push('</span></li>');
}
text.push('</ul>');
return text.join("");
}
},
};
root.Chart = Chart;
Chart.noConflict = function() {
root.Chart = previous;
return Chart;
};
}).call(this);
(function() {
"use strict";
//Declare root variable - window in the browser, global on the server
var root = this,
Chart = root.Chart;
//Global Chart helpers object for utility methods and classes
var helpers = Chart.helpers = {};
//-- Basic js utility methods
var each = helpers.each = function(loopable, callback, self, reverse) {
var additionalArgs = Array.prototype.slice.call(arguments, 3);
// Check to see if null or undefined firstly.
if (loopable) {
if (loopable.length === +loopable.length) {
var i;
if (reverse) {
for (i = loopable.length - 1; i >= 0; i--) {
callback.apply(self, [loopable[i], i].concat(additionalArgs));
}
} else {
for (i = 0; i < loopable.length; i++) {
callback.apply(self, [loopable[i], i].concat(additionalArgs));
}
}
} else {
for (var item in loopable) {
callback.apply(self, [loopable[item], item].concat(additionalArgs));
}
}
}
},
clone = helpers.clone = function(obj) {
var objClone = {};
each(obj, function(value, key) {
if (obj.hasOwnProperty(key)) {
if (helpers.isArray(value)) {
objClone[key] = value.slice(0);
} else if (typeof value === 'object' && value !== null) {
objClone[key] = clone(value);
} else {
objClone[key] = value;
}
}
});
return objClone;
},
extend = helpers.extend = function(base) {
each(Array.prototype.slice.call(arguments, 1), function(extensionObject) {
each(extensionObject, function(value, key) {
if (extensionObject.hasOwnProperty(key)) {
base[key] = value;
}
});
});
return base;
},
// Need a special merge function to chart configs since they are now grouped
configMerge = helpers.configMerge = function(_base) {
var base = clone(_base);
helpers.each(Array.prototype.slice.call(arguments, 1), function(extension) {
helpers.each(extension, function(value, key) {
if (extension.hasOwnProperty(key)) {
if (key === 'scales') {
// Scale config merging is complex. Add out own function here for that
base[key] = helpers.scaleMerge(base.hasOwnProperty(key) ? base[key] : {}, value);
} else if (key === 'scale') {
// Used in polar area & radar charts since there is only one scale
base[key] = helpers.configMerge(base.hasOwnProperty(key) ? base[key] : {}, Chart.scaleService.getScaleDefaults(value.type), value);
} else if (base.hasOwnProperty(key) && helpers.isArray(base[key]) && helpers.isArray(value)) {
// In this case we have an array of objects replacing another array. Rather than doing a strict replace,
// merge. This allows easy scale option merging
var baseArray = base[key];
helpers.each(value, function(valueObj, index) {
if (index < baseArray.length) {
if (typeof baseArray[index] == 'object' && baseArray[index] !== null && typeof valueObj == 'object' && valueObj !== null) {
// Two objects are coming together. Do a merge of them.
baseArray[index] = helpers.configMerge(baseArray[index], valueObj);
} else {
// Just overwrite in this case since there is nothing to merge
baseArray[index] = valueObj;
}
} else {
baseArray.push(valueObj); // nothing to merge
}
});
} 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;
},
extendDeep = helpers.extendDeep = function(_base) {
return _extendDeep.apply(this, arguments);
function _extendDeep(dst) {
helpers.each(arguments, function(obj) {
if (obj !== dst) {
helpers.each(obj, function(value, key) {
if (dst[key] && dst[key].constructor && dst[key].constructor === Object) {
_extendDeep(dst[key], value);
} else {
dst[key] = value;
}
});
}
});
return dst;
}
},
scaleMerge = helpers.scaleMerge = function(_base, extension) {
var base = clone(_base);
helpers.each(extension, function(value, key) {
if (extension.hasOwnProperty(key)) {
if (key === 'xAxes' || key === 'yAxes') {
// These properties are arrays of items
if (base.hasOwnProperty(key)) {
helpers.each(value, function(valueObj, index) {
if (index >= base[key].length || !base[key][index].type) {
base[key].push(helpers.configMerge(valueObj.type ? Chart.scaleService.getScaleDefaults(valueObj.type) : {}, valueObj));
} else if (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], valueObj.type ? Chart.scaleService.getScaleDefaults(valueObj.type) : {}, valueObj);
} else {
// Type is the same
base[key][index] = helpers.configMerge(base[key][index], valueObj);
}
});
} else {
base[key] = [];
helpers.each(value, function(valueObj) {
base[key].push(helpers.configMerge(valueObj.type ? Chart.scaleService.getScaleDefaults(valueObj.type) : {}, 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;
},
getValueAtIndexOrDefault = 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;
},
getValueOrDefault = helpers.getValueOrDefault = function(value, defaultValue) {
return value === undefined ? defaultValue : value;
},
indexOf = helpers.indexOf = function(arrayToSearch, item) {
if (Array.prototype.indexOf) {
return arrayToSearch.indexOf(item);
} else {
for (var i = 0; i < arrayToSearch.length; i++) {
if (arrayToSearch[i] === item) return i;
}
return -1;
}
},
where = helpers.where = function(collection, filterCallback) {
var filtered = [];
helpers.each(collection, function(item) {
if (filterCallback(item)) {
filtered.push(item);
}
});
return filtered;
},
findNextWhere = 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;
}
}
},
findPreviousWhere = 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;
}
}
},
inherits = helpers.inherits = function(extensions) {
//Basic javascript inheritance based on the model created in Backbone.js
var parent = this;
var ChartElement = (extensions && extensions.hasOwnProperty("constructor")) ? extensions.constructor : function() {
return parent.apply(this, arguments);
};
var Surrogate = function() {
this.constructor = ChartElement;
};
Surrogate.prototype = parent.prototype;
ChartElement.prototype = new Surrogate();
ChartElement.extend = inherits;
if (extensions) extend(ChartElement.prototype, extensions);
ChartElement.__super__ = parent.prototype;
return ChartElement;
},
noop = helpers.noop = function() {},
uid = helpers.uid = (function() {
var id = 0;
return function() {
return "chart-" + id++;
};
})(),
warn = helpers.warn = function(str) {
//Method for warning of errors
if (console && typeof console.warn === "function") {
console.warn(str);
}
},
//-- Math methods
isNumber = helpers.isNumber = function(n) {
return !isNaN(parseFloat(n)) && isFinite(n);
},
max = helpers.max = function(array) {
return Math.max.apply(Math, array);
},
min = helpers.min = function(array) {
return Math.min.apply(Math, array);
},
sign = helpers.sign = function(x) {
if (Math.sign) {
return Math.sign(x);
} else {
x = +x; // convert to a number
if (x === 0 || isNaN(x)) {
return x;
}
return x > 0 ? 1 : -1;
}
},
log10 = helpers.log10 = function(x) {
if (Math.log10) {
return Math.log10(x);
} else {
return Math.log(x) / Math.LN10;
}
},
getDecimalPlaces = helpers.getDecimalPlaces = function(num) {
if (num % 1 !== 0 && isNumber(num)) {
var s = num.toString();
if (s.indexOf("e-") < 0) {
// no exponent, e.g. 0.01
return s.split(".")[1].length;
} else if (s.indexOf(".") < 0) {
// no decimal point, e.g. 1e-9
return parseInt(s.split("e-")[1]);
} else {
// exponent and decimal point, e.g. 1.23e-9
var parts = s.split(".")[1].split("e-");
return parts[0].length + parseInt(parts[1]);
}
} else {
return 0;
}
},
toRadians = helpers.toRadians = function(degrees) {
return degrees * (Math.PI / 180);
},
toDegrees = helpers.toDegrees = function(radians) {
return radians * (180 / Math.PI);
},
// Gets the angle from vertical upright to the point about a centre.
getAngleFromPoint = 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
};
},
aliasPixel = helpers.aliasPixel = function(pixelWidth) {
return (pixelWidth % 2 === 0) ? 0 : 0.5;
},
splineCurve = 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)
}
};
},
nextItem = 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];
},
previousItem = 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
niceNum = 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/
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);
} else {
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/
requestAnimFrame = helpers.requestAnimFrame = (function() {
return window.requestAnimationFrame ||
window.webkitRequestAnimationFrame ||
window.mozRequestAnimationFrame ||
window.oRequestAnimationFrame ||
window.msRequestAnimationFrame ||
function(callback) {
return window.setTimeout(callback, 1000 / 60);
};
})(),
cancelAnimFrame = helpers.cancelAnimFrame = (function() {
return window.cancelAnimationFrame ||
window.webkitCancelAnimationFrame ||
window.mozCancelAnimationFrame ||
window.oCancelAnimationFrame ||
window.msCancelAnimationFrame ||
function(callback) {
return window.clearTimeout(callback, 1000 / 60);
};
})(),
//-- DOM methods
getRelativePosition = helpers.getRelativePosition = function(evt, chart) {
var mouseX, mouseY;
var e = evt.originalEvent || evt,
canvas = evt.currentTarget || evt.srcElement,
boundingRect = canvas.getBoundingClientRect();
if (e.touches && e.touches.length > 0) {
mouseX = e.touches[0].clientX;
mouseY = e.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/
// 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) / (boundingRect.right - boundingRect.left) * canvas.width / chart.currentDevicePixelRatio);
mouseY = Math.round((mouseY - boundingRect.top) / (boundingRect.bottom - boundingRect.top) * canvas.height / chart.currentDevicePixelRatio);
return {
x: mouseX,
y: mouseY
};
},
addEvent = 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;
}
},
removeEvent = 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] = noop;
}
},
bindEvents = helpers.bindEvents = function(chartInstance, arrayOfEvents, handler) {
// Create the events object if it's not already present
if (!chartInstance.events) chartInstance.events = {};
each(arrayOfEvents, function(eventName) {
chartInstance.events[eventName] = function() {
handler.apply(chartInstance, arguments);
};
addEvent(chartInstance.chart.canvas, eventName, chartInstance.events[eventName]);
});
},
unbindEvents = helpers.unbindEvents = function(chartInstance, arrayOfEvents) {
each(arrayOfEvents, function(handler, eventName) {
removeEvent(chartInstance.chart.canvas, eventName, handler);
});
},
getConstraintWidth = helpers.getConstraintWidth = function(domNode) { // returns Number or undefined if no constraint
var constrainedWidth;
var constrainedWNode = document.defaultView.getComputedStyle(domNode)['max-width'];
var constrainedWContainer = document.defaultView.getComputedStyle(domNode.parentNode)['max-width'];
var hasCWNode = constrainedWNode !== null && constrainedWNode !== "none";
var hasCWContainer = constrainedWContainer !== null && constrainedWContainer !== "none";
if (hasCWNode || hasCWContainer) {
constrainedWidth = Math.min((hasCWNode ? parseInt(constrainedWNode, 10) : Number.POSITIVE_INFINITY), (hasCWContainer ? parseInt(constrainedWContainer, 10) : Number.POSITIVE_INFINITY));
}
return constrainedWidth;
},
getConstraintHeight = helpers.getConstraintHeight = function(domNode) { // returns Number or undefined if no constraint
var constrainedHeight;
var constrainedHNode = document.defaultView.getComputedStyle(domNode)['max-height'];
var constrainedHContainer = document.defaultView.getComputedStyle(domNode.parentNode)['max-height'];
var hasCHNode = constrainedHNode !== null && constrainedHNode !== "none";
var hasCHContainer = constrainedHContainer !== null && constrainedHContainer !== "none";
if (constrainedHNode || constrainedHContainer) {
constrainedHeight = Math.min((hasCHNode ? parseInt(constrainedHNode, 10) : Number.POSITIVE_INFINITY), (hasCHContainer ? parseInt(constrainedHContainer, 10) : Number.POSITIVE_INFINITY));
}
return constrainedHeight;
},
getMaximumWidth = helpers.getMaximumWidth = function(domNode) {
var container = domNode.parentNode;
var padding = parseInt(getStyle(container, 'padding-left')) + parseInt(getStyle(container, 'padding-right'));
var w = container.clientWidth - padding;
var cw = getConstraintWidth(domNode);
if (cw !== undefined) {
w = Math.min(w, cw);
}
return w;
},
getMaximumHeight = helpers.getMaximumHeight = function(domNode) {
var container = domNode.parentNode;
var padding = parseInt(getStyle(container, 'padding-top')) + parseInt(getStyle(container, 'padding-bottom'));
var h = container.clientHeight - padding;
var ch = getConstraintHeight(domNode);
if (ch !== undefined) {
h = Math.min(h, ch);
}
return h;
},
getStyle = helpers.getStyle = function(el, property) {
return el.currentStyle ?
el.currentStyle[property] :
document.defaultView.getComputedStyle(el, null).getPropertyValue(property);
},
getMaximumSize = helpers.getMaximumSize = helpers.getMaximumWidth, // legacy support
retinaScale = helpers.retinaScale = function(chart) {
var ctx = chart.ctx;
var width = chart.canvas.width;
var height = chart.canvas.height;
var pixelRatio = chart.currentDevicePixelRatio = window.devicePixelRatio || 1;
if (pixelRatio !== 1) {
ctx.canvas.height = height * pixelRatio;
ctx.canvas.width = width * pixelRatio;
ctx.scale(pixelRatio, pixelRatio);
ctx.canvas.style.width = width + 'px';
ctx.canvas.style.height = height + 'px';
// Store the device pixel ratio so that we can go backwards in `destroy`.
// The devicePixelRatio changes with zoom, so there are no guarantees that it is the same
// when destroy is called
chart.originalDevicePixelRatio = chart.originalDevicePixelRatio || pixelRatio;
}
},
//-- Canvas methods
clear = helpers.clear = function(chart) {
chart.ctx.clearRect(0, 0, chart.width, chart.height);
},
fontString = helpers.fontString = function(pixelSize, fontStyle, fontFamily) {
return fontStyle + " " + pixelSize + "px " + fontFamily;
},
longestText = helpers.longestText = function(ctx, font, arrayOfStrings) {
ctx.font = font;
var longest = 0;
each(arrayOfStrings, function(string) {
var textWidth = ctx.measureText(string).width;
longest = (textWidth > longest) ? textWidth : longest;
});
return longest;
},
drawRoundedRectangle = 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();
},
color = helpers.color = function(color) {
if (!root.Color) {
console.log('Color.js not found!');
return color;
}
return root.Color(color);
},
addResizeListener = helpers.addResizeListener = function(node, callback) {
// Hide an iframe before the node
var hiddenIframe = document.createElement('iframe');
var hiddenIframeClass = 'chartjs-hidden-iframe';
if (hiddenIframe.classlist) {
// can use classlist
hiddenIframe.classlist.add(hiddenIframeClass);
} else {
hiddenIframe.setAttribute('class', hiddenIframeClass);
}
// Set the style
hiddenIframe.style.width = '100%';
hiddenIframe.style.display = 'block';
hiddenIframe.style.border = 0;
hiddenIframe.style.height = 0;
hiddenIframe.style.margin = 0;
hiddenIframe.style.position = 'absolute';
hiddenIframe.style.left = 0;
hiddenIframe.style.right = 0;
hiddenIframe.style.top = 0;
hiddenIframe.style.bottom = 0;
// Insert the iframe so that contentWindow is available
node.insertBefore(hiddenIframe, node.firstChild);
var timer = 0;
(hiddenIframe.contentWindow || hiddenIframe).onresize = function() {
if (callback) {
callback();
}
};
},
removeResizeListener = helpers.removeResizeListener = function(node) {
var hiddenIframe = node.querySelector('.chartjs-hidden-iframe');
// Remove the resize detect iframe
if (hiddenIframe) {
hiddenIframe.parentNode.removeChild(hiddenIframe);
}
},
isArray = helpers.isArray = function(obj) {
if (!Array.isArray) {
return Object.prototype.toString.call(arg) === '[object Array]';
}
return Array.isArray(obj);
},
isDatasetVisible = helpers.isDatasetVisible = function(dataset) {
return !dataset.hidden;
};
helpers.callCallback = function(fn, args, _tArg) {
if (fn && typeof fn.call === 'function') {
fn.apply(_tArg, args);
}
}
}).call(this);
(function() {
"use strict";
//Declare root variable - window in the browser, global on the server
var root = this,
Chart = root.Chart,
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() {},
pivot: function() {
if (!this._view) {
this._view = helpers.clone(this._model);
}
this._start = helpers.clone(this._view);
return this;
},
transition: function(ease) {
if (!this._view) {
this._view = helpers.clone(this._model);
}
if (!this._start) {
this.pivot();
}
helpers.each(this._model, function(value, key) {
if (key[0] === '_' || !this._model.hasOwnProperty(key)) {
// Only non-underscored properties
}
// Init if doesn't exist
else if (!this._view[key]) {
if (typeof value === 'number' && isNaN(this._view[key]) === false) {
this._view[key] = value * ease;
} else {
this._view[key] = value || null;
}
}
// No unnecessary computations
else if (this._model[key] === this._view[key]) {
// It's the same! Woohoo!
}
// Color transitions if possible
else if (typeof value === 'string') {
try {
var color = helpers.color(this._start[key]).mix(helpers.color(this._model[key]), ease);
this._view[key] = color.rgbString();
} catch (err) {
this._view[key] = value;
}
}
// Number transitions
else if (typeof value === 'number') {
var startVal = this._start[key] !== undefined && isNaN(this._start[key]) === false ? this._start[key] : 0;
this._view[key] = ((this._model[key] - startVal) * ease) + startVal;
}
// Everything else
else {
this._view[key] = value;
}
}, this);
if (ease === 1) {
delete this._start;
}
return this;
},
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;
}).call(this);
(function() {
"use strict";
var root = this,
Chart = root.Chart,
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,
addAnimation: function(chartInstance, animationObject, duration, lazy) {
if (!lazy) {
chartInstance.animating = true;
}
for (var index = 0; index < this.animations.length; ++index) {
if (this.animations[index].chartInstance === chartInstance) {
// replacing an in progress animation
this.animations[index].animationObject = animationObject;
return;
}
}
this.animations.push({
chartInstance: chartInstance,
animationObject: animationObject
});
// If there are no animations queued, manually kickstart a digest, for lack of a better word
if (this.animations.length == 1) {
helpers.requestAnimFrame.call(window, this.digestWrapper);
}
},
// Cancel the animation for a given chart instance
cancelAnimation: function(chartInstance) {
var index = helpers.findNextWhere(this.animations, function(animationWrapper) {
return animationWrapper.chartInstance === chartInstance;
});
if (index) {
this.animations.splice(index, 1);
chartInstance.animating = false;
}
},
// calls startDigest with the proper context
digestWrapper: function() {
Chart.animationService.startDigest.call(Chart.animationService);
},
startDigest: function() {
var startTime = Date.now();
var framesToDrop = 0;
if (this.dropFrames > 1) {
framesToDrop = Math.floor(this.dropFrames);
this.dropFrames = this.dropFrames % 1;
}
for (var i = 0; i < this.animations.length; i++) {
if (this.animations[i].animationObject.currentStep === null) {
this.animations[i].animationObject.currentStep = 0;
}
this.animations[i].animationObject.currentStep += 1 + framesToDrop;
if (this.animations[i].animationObject.currentStep > this.animations[i].animationObject.numSteps) {
this.animations[i].animationObject.currentStep = this.animations[i].animationObject.numSteps;
}
this.animations[i].animationObject.render(this.animations[i].chartInstance, this.animations[i].animationObject);
if (this.animations[i].animationObject.onAnimationProgress && this.animations[i].animationObject.onAnimationProgress.call) {
this.animations[i].animationObject.onAnimationProgress.call(this.animations[i].chartInstance, this.animations[i]);
}
if (this.animations[i].animationObject.currentStep == this.animations[i].animationObject.numSteps) {
if (this.animations[i].animationObject.onAnimationComplete && this.animations[i].animationObject.onAnimationComplete.call) {
this.animations[i].animationObject.onAnimationComplete.call(this.animations[i].chartInstance, this.animations[i]);
}
// executed the last frame. Remove the animation.
this.animations[i].chartInstance.animating = false;
this.animations.splice(i, 1);
// Keep the index in place to offset the splice
i--;
}
}
var endTime = Date.now();
var dropFrames = (endTime - startTime) / this.frameDuration;
this.dropFrames += dropFrames;
// Do we have more stuff to animate?
if (this.animations.length > 0) {
helpers.requestAnimFrame.call(window, this.digestWrapper);
}
}
};
}).call(this);
(function() {
"use strict";
//Declare root variable - window in the browser, global on the server
var root = this,
Chart = root.Chart,
helpers = Chart.helpers;
//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 = {};
// The main controller of a chart
Chart.Controller = function(instance) {
this.chart = instance;
this.config = instance.config;
this.options = this.config.options = helpers.configMerge(Chart.defaults.global, Chart.defaults[this.config.type], this.config.options || {});
this.id = helpers.uid();
Object.defineProperty(this, 'data', {
get: function() {
return this.config.data;
},
});
//Add the chart instance to the global namespace
Chart.instances[this.id] = this;
if (this.options.responsive) {
// Silent resize before chart draws
this.resize(true);
}
this.initialize.call(this);
return this;
};
helpers.extend(Chart.Controller.prototype, {
initialize: function initialize() {
// TODO
// If BeforeInit(this) doesn't return false, proceed
this.bindEvents();
// Make sure controllers are built first so that each dataset is bound to an axis before the scales
// are built
this.ensureScalesHaveIDs();
this.buildOrUpdateControllers();
this.buildScales();
this.buildSurroundingItems();
this.updateLayout();
this.resetElements();
this.initToolTip();
this.update();
// TODO
// If AfterInit(this) doesn't return false, proceed
return this;
},
clear: function clear() {
helpers.clear(this.chart);
return this;
},
stop: function stop() {
// Stops any current animation loop occuring
Chart.animationService.cancelAnimation(this);
return this;
},
resize: function resize(silent) {
this.stop();
var canvas = this.chart.canvas;
var newWidth = helpers.getMaximumWidth(this.chart.canvas);
var newHeight = (this.options.maintainAspectRatio && isNaN(this.chart.aspectRatio) === false && isFinite(this.chart.aspectRatio) && this.chart.aspectRatio !== 0) ? newWidth / this.chart.aspectRatio : helpers.getMaximumHeight(this.chart.canvas);
canvas.width = this.chart.width = newWidth;
canvas.height = this.chart.height = newHeight;
helpers.retinaScale(this.chart);
if (!silent) {
this.update(this.options.responsiveAnimationDuration);
}
return this;
},
ensureScalesHaveIDs: function ensureScalesHaveIDs() {
var defaultXAxisID = 'x-axis-';
var defaultYAxisID = 'y-axis-';
if (this.options.scales) {
if (this.options.scales.xAxes && this.options.scales.xAxes.length) {
helpers.each(this.options.scales.xAxes, function(xAxisOptions, index) {
xAxisOptions.id = xAxisOptions.id || (defaultXAxisID + index);
}, this);
}
if (this.options.scales.yAxes && this.options.scales.yAxes.length) {
// Build the y axes
helpers.each(this.options.scales.yAxes, function(yAxisOptions, index) {
yAxisOptions.id = yAxisOptions.id || (defaultYAxisID + index);
}, this);
}
}
},
buildScales: function buildScales() {
// Map of scale ID to scale object so we can lookup later
this.scales = {};
// Build the x axes
if (this.options.scales) {
if (this.options.scales.xAxes && this.options.scales.xAxes.length) {
helpers.each(this.options.scales.xAxes, function(xAxisOptions, index) {
var ScaleClass = Chart.scaleService.getScaleConstructor(xAxisOptions.type);
var scale = new ScaleClass({
ctx: this.chart.ctx,
options: xAxisOptions,
chart: this,
id: xAxisOptions.id,
});
this.scales[scale.id] = scale;
}, this);
}
if (this.options.scales.yAxes && this.options.scales.yAxes.length) {
// Build the y axes
helpers.each(this.options.scales.yAxes, function(yAxisOptions, index) {
var ScaleClass = Chart.scaleService.getScaleConstructor(yAxisOptions.type);
var scale = new ScaleClass({
ctx: this.chart.ctx,
options: yAxisOptions,
chart: this,
id: yAxisOptions.id,
});
this.scales[scale.id] = scale;
}, this);
}
}
if (this.options.scale) {
// Build radial axes
var ScaleClass = Chart.scaleService.getScaleConstructor(this.options.scale.type);
var scale = new ScaleClass({
ctx: this.chart.ctx,
options: this.options.scale,
chart: this,
});
this.scale = scale;
this.scales.radialScale = scale;
}
Chart.scaleService.addScalesToLayout(this);
},
buildSurroundingItems: function() {
if (this.options.title) {
this.titleBlock = new Chart.Title({
ctx: this.chart.ctx,
options: this.options.title,
chart: this
});
Chart.layoutService.addBox(this, this.titleBlock);
}
if (this.options.legend) {
this.legend = new Chart.Legend({
ctx: this.chart.ctx,
options: this.options.legend,
chart: this,
});
Chart.layoutService.addBox(this, this.legend);
}
},
updateLayout: function() {
Chart.layoutService.update(this, this.chart.width, this.chart.height);
},
buildOrUpdateControllers: function buildOrUpdateControllers(resetNewControllers) {
var types = [];
helpers.each(this.data.datasets, function(dataset, datasetIndex) {
if (!dataset.type) {
dataset.type = this.config.type;
}
var type = dataset.type;
types.push(type);
if (dataset.controller) {
dataset.controller.updateIndex(datasetIndex);
} else {
dataset.controller = new Chart.controllers[type](this, datasetIndex);
if (resetNewControllers) {
dataset.controller.reset();
}
}
}, this);
if (types.length > 1) {
for (var i = 1; i < types.length; i++) {
if (types[i] != types[i - 1]) {
this.isCombo = true;
break;
}
}
}
},
resetElements: function resetElements() {
helpers.each(this.data.datasets, function(dataset, datasetIndex) {
dataset.controller.reset();
}, this);
},
update: function update(animationDuration, lazy) {
// In case the entire data object changed
this.tooltip._data = this.data;
// Make sure dataset controllers are updated and new controllers are reset
this.buildOrUpdateControllers(true);
Chart.layoutService.update(this, this.chart.width, this.chart.height);
// Make sure all dataset controllers have correct meta data counts
helpers.each(this.data.datasets, function(dataset, datasetIndex) {
dataset.controller.buildOrUpdateElements();
}, this);
// This will loop through any data and do the appropriate element update for the type
helpers.each(this.data.datasets, function(dataset, datasetIndex) {
dataset.controller.update();
}, this);
this.render(animationDuration, lazy);
},
render: function render(duration, lazy) {
if (this.options.animation && ((typeof duration !== 'undefined' && duration !== 0) || (typeof duration == 'undefined' && this.options.animation.duration !== 0))) {
var animation = new Chart.Animation();
animation.numSteps = (duration || this.options.animation.duration) / 16.66; //60 fps
animation.easing = this.options.animation.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 = this.options.animation.onProgress;
animation.onAnimationComplete = this.options.animation.onComplete;
Chart.animationService.addAnimation(this, animation, duration, lazy);
} else {
this.draw();
if (this.options.animation && this.options.animation.onComplete && this.options.animation.onComplete.call) {
this.options.animation.onComplete.call(this);
}
}
return this;
},
draw: function(ease) {
var easingDecimal = ease || 1;
this.clear();
// Draw all the scales
helpers.each(this.boxes, function(box) {
box.draw(this.chartArea);
}, this);
if (this.scale) {
this.scale.draw();
}
// Draw each dataset via its respective controller (reversed to support proper line stacking)
helpers.each(this.data.datasets, function(dataset, datasetIndex) {
if (helpers.isDatasetVisible(dataset)) {
dataset.controller.draw(ease);
}
}, this);
// Finally draw the tooltip
this.tooltip.transition(easingDecimal).draw();
},
// 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) {
var eventPosition = helpers.getRelativePosition(e, this.chart);
var elementsArray = [];
helpers.each(this.data.datasets, function(dataset, datasetIndex) {
if (helpers.isDatasetVisible(dataset)) {
helpers.each(dataset.metaData, function(element, index) {
if (element.inRange(eventPosition.x, eventPosition.y)) {
elementsArray.push(element);
return elementsArray;
}
}, this);
}
}, this);
return elementsArray;
},
getElementsAtEvent: function(e) {
var eventPosition = helpers.getRelativePosition(e, this.chart);
var elementsArray = [];
var found = (function(){
for (var i = 0; i < this.data.datasets.length; i++) {
if (helpers.isDatasetVisible(this.data.datasets[i])) {
for (var j = 0; j < this.data.datasets[i].metaData.length; j++) {
if (this.data.datasets[i].metaData[j].inRange(eventPosition.x, eventPosition.y)) {
return this.data.datasets[i].metaData[j];
}
}
}
}
}).call(this);
if(!found){
return elementsArray;
}
helpers.each(this.data.datasets, function(dataset, dsIndex){
if(helpers.isDatasetVisible(dataset)){
elementsArray.push(dataset.metaData[found._index]);
}
}, this);
return elementsArray;
},
getDatasetAtEvent: function(e) {
var elementsArray = this.getElementAtEvent(e);
if (elementsArray.length > 0) {
elementsArray = this.data.datasets[elementsArray[0]._datasetIndex].metaData;
}
return elementsArray;
},
generateLegend: function generateLegend() {
return this.options.legendCallback(this);
},
destroy: function destroy() {
this.clear();
helpers.unbindEvents(this, this.events);
helpers.removeResizeListener(this.chart.canvas.parentNode);
// Reset canvas height/width attributes
var canvas = this.chart.canvas;
canvas.width = this.chart.width;
canvas.height = this.chart.height;
// if we scaled the canvas in response to a devicePixelRatio !== 1, we need to undo that transform here
if (this.chart.originalDevicePixelRatio !== undefined) {
this.chart.ctx.scale(1 / this.chart.originalDevicePixelRatio, 1 / this.chart.originalDevicePixelRatio);
}
// Reset to the old style since it may have been changed by the device pixel ratio changes
canvas.style.width = this.chart.originalCanvasStyleWidth;
canvas.style.height = this.chart.originalCanvasStyleHeight;
delete Chart.instances[this.id];
},
toBase64Image: function toBase64Image() {
return this.chart.canvas.toDataURL.apply(this.chart.canvas, arguments);
},
initToolTip: function initToolTip() {
this.tooltip = new Chart.Tooltip({
_chart: this.chart,
_chartInstance: this,
_data: this.data,
_options: this.options,
}, this);
},
bindEvents: function bindEvents() {
helpers.bindEvents(this, this.options.events, function(evt) {
this.eventHandler(evt);
});
},
eventHandler: function eventHandler(e) {
this.lastActive = this.lastActive || [];
this.lastTooltipActive = this.lastTooltipActive || [];
// Find Active Elements for hover and tooltips
if (e.type == 'mouseout') {
this.active = [];
this.tooltipActive = [];
} else {
var _this = this;
var getItemsForMode = function(mode) {
switch (mode) {
case 'single':
return _this.getElementAtEvent(e);
case 'label':
return _this.getElementsAtEvent(e);
case 'dataset':
return _this.getDatasetAtEvent(e);
default:
return e;
}
};
this.active = getItemsForMode(this.options.hover.mode);
this.tooltipActive = getItemsForMode(this.options.tooltips.mode);
}
// On Hover hook
if (this.options.hover.onHover) {
this.options.hover.onHover.call(this, this.active);
}
if (e.type == 'mouseup' || e.type == 'click') {
if (this.options.onClick) {
this.options.onClick.call(this, e, this.active);
}
if (this.legend && this.legend.handleEvent) {
this.legend.handleEvent(e);
}
}
var dataset;
var index;
// Remove styling for last active (even if it may still be active)
if (this.lastActive.length) {
switch (this.options.hover.mode) {
case 'single':
this.data.datasets[this.lastActive[0]._datasetIndex].controller.removeHoverStyle(this.lastActive[0], this.lastActive[0]._datasetIndex, this.lastActive[0]._index);
break;
case 'label':
case 'dataset':
for (var i = 0; i < this.lastActive.length; i++) {
if (this.lastActive[i])
this.data.datasets[this.lastActive[i]._datasetIndex].controller.removeHoverStyle(this.lastActive[i], this.lastActive[i]._datasetIndex, this.lastActive[i]._index);
}
break;
default:
// Don't change anything
}
}
// Built in hover styling
if (this.active.length && this.options.hover.mode) {
switch (this.options.hover.mode) {
case 'single':
this.data.datasets[this.active[0]._datasetIndex].controller.setHoverStyle(this.active[0]);
break;
case 'label':
case 'dataset':
for (var j = 0; j < this.active.length; j++) {
if (this.active[j])
this.data.datasets[this.active[j]._datasetIndex].controller.setHoverStyle(this.active[j]);
}
break;
default:
// Don't change anything
}
}
// Built in Tooltips
if (this.options.tooltips.enabled || this.options.tooltips.custom) {
// The usual updates
this.tooltip.initialize();
this.tooltip._active = this.tooltipActive;
this.tooltip.update();
}
// Hover animations
this.tooltip.pivot();
if (!this.animating) {
var changed;
helpers.each(this.active, function(element, index) {
if (element !== this.lastActive[index]) {
changed = true;
}
}, this);
helpers.each(this.tooltipActive, function(element, index) {
if (element !== this.lastTooltipActive[index]) {
changed = true;
}
}, this);
// If entering, leaving, or changing elements, animate the change via pivot
if ((this.lastActive.length !== this.active.length) ||
(this.lastTooltipActive.length !== this.tooltipActive.length) ||
changed) {
this.stop();
if (this.options.tooltips.enabled || this.options.tooltips.custom) {
this.tooltip.update(true);
}
// We only need to render at this point. Updating will cause scales to be recomputed generating flicker & using more
// memory than necessary.
this.render(this.options.hover.animationDuration, true);
}
}
// Remember Last Actives
this.lastActive = this.active;
this.lastTooltipActive = this.tooltipActive;
return this;
},
});
}).call(this);
(function() {
"use strict";
//Declare root variable - window in the browser, global on the server
var root = this,
Chart = root.Chart,
helpers = Chart.helpers;
// Base class for all dataset controllers (line, bar, etc)
Chart.DatasetController = function(chart, datasetIndex) {
this.initialize.call(this, chart, datasetIndex);
};
helpers.extend(Chart.DatasetController.prototype, {
initialize: function(chart, datasetIndex) {
this.chart = chart;
this.index = datasetIndex;
this.linkScales();
this.addElements();
},
updateIndex: function(datasetIndex) {
this.index = datasetIndex;
},
linkScales: function() {
if (!this.getDataset().xAxisID) {
this.getDataset().xAxisID = this.chart.options.scales.xAxes[0].id;
}
if (!this.getDataset().yAxisID) {
this.getDataset().yAxisID = this.chart.options.scales.yAxes[0].id;
}
},
getDataset: function() {
return this.chart.data.datasets[this.index];
},
getScaleForId: function(scaleID) {
return this.chart.scales[scaleID];
},
reset: function() {
this.update(true);
},
buildOrUpdateElements: function buildOrUpdateElements() {
// Handle the number of data points changing
var numData = this.getDataset().data.length;
var numMetaData = this.getDataset().metaData.length;
// Make sure that we handle number of datapoints changing
if (numData < numMetaData) {
// Remove excess bars for data points that have been removed
this.getDataset().metaData.splice(numData, numMetaData - numData);
} else if (numData > numMetaData) {
// Add new elements
for (var index = numMetaData; index < numData; ++index) {
this.addElementAndReset(index);
}
}
},
// Controllers should implement the following
addElements: helpers.noop,
addElementAndReset: helpers.noop,
draw: helpers.noop,
removeHoverStyle: helpers.noop,
setHoverStyle: helpers.noop,
update: helpers.noop,
});
Chart.DatasetController.extend = helpers.inherits;
}).call(this);
(function() {
"use strict";
var root = this,
Chart = root.Chart,
helpers = Chart.helpers;
// The layout service is ver 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 xPadding = width > 30 ? 5 : 2;
var yPadding = height > 30 ? 5 : 2;
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";
});
function fullWidthSorter(a, b) {
}
// 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 - (2 * xPadding);
var chartHeight = height - (2 * yPadding);
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 = [];
helpers.each(leftBoxes.concat(rightBoxes, topBoxes, bottomBoxes), getMinimumBoxSize);
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,
});
}
// 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 = xPadding;
var totalRightBoxesWidth = xPadding;
var totalTopBoxesHeight = yPadding;
var totalBottomBoxesHeight = yPadding;
// 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);
// Function to fit a box
function fitBox(box) {
var minBoxSize = helpers.findNextWhere(minBoxSizes, function(minBoxSize) {
return minBoxSize.box === box;
});
if (minBoxSize) {
if (box.isHorizontal()) {
var scaleMargin = {
left: totalLeftBoxesWidth,
right: totalRightBoxesWidth,
top: 0,
bottom: 0,
};
box.update(box.options.fullWidth ? chartWidth : maxChartAreaWidth, minBoxSize.minSize.height, scaleMargin);
} else {
box.update(minBoxSize.minSize.width, maxChartAreaHeight);
}
}
}
// 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;
});
// Let the left layout know the final margin
helpers.each(leftBoxes.concat(rightBoxes), finalFitVerticalBox);
function finalFitVerticalBox(box) {
var minBoxSize = helpers.findNextWhere(minBoxSizes, function(minBoxSize) {
return minBoxSize.box === box;
});
var scaleMargin = {
left: 0,
right: 0,
top: totalTopBoxesHeight,
bottom: totalBottomBoxesHeight
};
if (minBoxSize) {
box.update(minBoxSize.minSize.width, maxChartAreaHeight, scaleMargin);
}
}
// Recalculate because the size of each layout might have changed slightly due to the margins (label rotation for instance)
totalLeftBoxesWidth = xPadding;
totalRightBoxesWidth = xPadding;
totalTopBoxesHeight = yPadding;
totalBottomBoxesHeight = yPadding;
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;
});
// 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) {
box.width = newMaxChartAreaWidth;
});
helpers.each(bottomBoxes, function(box) {
box.width = newMaxChartAreaWidth;
});
maxChartAreaHeight = newMaxChartAreaHeight;
maxChartAreaWidth = newMaxChartAreaWidth;
}
// Step 7 - Position the boxes
var left = xPadding;
var top = yPadding;
var right = 0;
var bottom = 0;
helpers.each(leftBoxes.concat(topBoxes), placeBox);
// Account for chart width and height
left += maxChartAreaWidth;
top += maxChartAreaHeight;
helpers.each(rightBoxes, placeBox);
helpers.each(bottomBoxes, placeBox);
function placeBox(box) {
if (box.isHorizontal()) {
box.left = box.options.fullWidth ? xPadding : totalLeftBoxesWidth;
box.right = box.options.fullWidth ? width - xPadding : 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;
}
}
// 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);
});
}
};
}).call(this);
(function() {
"use strict";
var root = this,
Chart = root.Chart,
helpers = Chart.helpers;
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)
// a callback that will handle
onClick: function(e, legendItem) {
var dataset = this.chart.data.datasets[legendItem.datasetIndex];
dataset.hidden = !dataset.hidden;
// We hid a dataset ... rerender the chart
this.chart.update();
},
labels: {
boxWidth: 40,
fontSize: 12,
fontStyle: "normal",
fontColor: "#666",
fontFamily: "Helvetica Neue",
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(data) {
return data.datasets.map(function(dataset, i) {
return {
text: dataset.label,
fillStyle: dataset.backgroundColor,
hidden: dataset.hidden,
lineCap: dataset.borderCapStyle,
lineDash: dataset.borderDash,
lineDashOffset: dataset.borderDashOffset,
lineJoin: dataset.borderJoinStyle,
lineWidth: dataset.borderWidth,
strokeStyle: dataset.borderColor,
// Below is extra data used for toggling the datasets
datasetIndex: i
};
}, this);
}
},
};
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 lifecyle. Utilities then follow.
// Any function defined here is inherited by all legend types.
// Any function can be extended by the legend type
beforeUpdate: helpers.noop,
update: function(maxWidth, maxHeight, margins) {
// Update Lifecycle - Probably don't want to ever extend or overwrite this function ;)
this.beforeUpdate();
// Absorb the master measurements
this.maxWidth = maxWidth;
this.maxHeight = maxHeight;
this.margins = margins;
// Dimensions
this.beforeSetDimensions();
this.setDimensions();
this.afterSetDimensions();
// Labels
this.beforeBuildLabels();
this.buildLabels();
this.afterBuildLabels();
// Fit
this.beforeFit();
this.fit();
this.afterFit();
//
this.afterUpdate();
return this.minSize;
},
afterUpdate: helpers.noop,
//
beforeSetDimensions: helpers.noop,
setDimensions: function() {
// Set the unconstrained dimension before label rotation
if (this.isHorizontal()) {
// Reset position before calculating rotation
this.width = this.maxWidth;
this.left = 0;
this.right = this.width;
} else {
this.height = this.maxHeight;
// Reset position before calculating rotation
this.top = 0;
this.bottom = this.height;
}
// Reset padding
this.paddingLeft = 0;
this.paddingTop = 0;
this.paddingRight = 0;
this.paddingBottom = 0;
// Reset minSize
this.minSize = {
width: 0,
height: 0,
};
},
afterSetDimensions: helpers.noop,
//
beforeBuildLabels: helpers.noop,
buildLabels: function() {
this.legendItems = this.options.labels.generateLabels.call(this, this.chart.data);
},
afterBuildLabels: helpers.noop,
//
beforeFit: helpers.noop,
fit: function() {
var ctx = this.ctx;
var labelFont = helpers.fontString(this.options.labels.fontSize, this.options.labels.fontStyle, this.options.labels.fontFamily);
// Reset hit boxes
this.legendHitBoxes = [];
// Width
if (this.isHorizontal()) {
this.minSize.width = this.maxWidth; // fill all the width
} else {
this.minSize.width = this.options.display ? 10 : 0;
}
// height
if (this.isHorizontal()) {
this.minSize.height = this.options.display ? 10 : 0;
} else {
this.minSize.height = this.maxHeight; // fill all the height
}
// Increase sizes here
if (this.options.display) {
if (this.isHorizontal()) {
// Labels
// Width of each line of legend boxes. Labels wrap onto multiple lines when there are too many to fit on one
this.lineWidths = [0];
var totalHeight = this.legendItems.length ? this.options.labels.fontSize + (this.options.labels.padding) : 0;
ctx.textAlign = "left";
ctx.textBaseline = 'top';
ctx.font = labelFont;
helpers.each(this.legendItems, function(legendItem, i) {
var width = this.options.labels.boxWidth + (this.options.labels.fontSize / 2) + ctx.measureText(legendItem.text).width;
if (this.lineWidths[this.lineWidths.length - 1] + width >= this.width) {
totalHeight += this.options.labels.fontSize + (this.options.labels.padding);
this.lineWidths[this.lineWidths.length] = this.left;
}
// Store the hitbox width and height here. Final position will be updated in `draw`
this.legendHitBoxes[i] = {
left: 0,
top: 0,
width: width,
height: this.options.labels.fontSize,
};
this.lineWidths[this.lineWidths.length - 1] += width + this.options.labels.padding;
}, this);
this.minSize.height += totalHeight;
} else {
// TODO vertical
}
}
this.width = this.minSize.width;
this.height = this.minSize.height;
},
afterFit: helpers.noop,
// Shared Methods
isHorizontal: function() {
return this.options.position == "top" || this.options.position == "bottom";
},
// Actualy draw the legend on the canvas
draw: function() {
if (this.options.display) {
var ctx = this.ctx;
var cursor = {
x: this.left + ((this.width - this.lineWidths[0]) / 2),
y: this.top + this.options.labels.padding,
line: 0,
};
var labelFont = helpers.fontString(this.options.labels.fontSize, this.options.labels.fontStyle, this.options.labels.fontFamily);
// Horizontal
if (this.isHorizontal()) {
// Labels
ctx.textAlign = "left";
ctx.textBaseline = 'top';
ctx.lineWidth = 0.5;
ctx.strokeStyle = this.options.labels.fontColor; // for strikethrough effect
ctx.fillStyle = this.options.labels.fontColor; // render in correct colour
ctx.font = labelFont;
helpers.each(this.legendItems, function(legendItem, i) {
var textWidth = ctx.measureText(legendItem.text).width;
var width = this.options.labels.boxWidth + (this.options.labels.fontSize / 2) + textWidth;
if (cursor.x + width >= this.width) {
cursor.y += this.options.labels.fontSize + (this.options.labels.padding);
cursor.line++;
cursor.x = this.left + ((this.width - this.lineWidths[cursor.line]) / 2);
}
// Set the ctx for the box
ctx.save();
var itemOrDefault = function(item, defaulVal) {
return item !== undefined ? item : defaulVal;
};
ctx.fillStyle = itemOrDefault(legendItem.fillStyle, Chart.defaults.global.defaultColor);
ctx.lineCap = itemOrDefault(legendItem.lineCap, Chart.defaults.global.elements.line.borderCapStyle);
ctx.lineDashOffset = itemOrDefault(legendItem.lineDashOffset, Chart.defaults.global.elements.line.borderDashOffset);
ctx.lineJoin = itemOrDefault(legendItem.lineJoin, Chart.defaults.global.elements.line.borderJoinStyle);
ctx.lineWidth = itemOrDefault(legendItem.lineWidth, Chart.defaults.global.elements.line.borderWidth);
ctx.strokeStyle = itemOrDefault(legendItem.strokeStyle, Chart.defaults.global.defaultColor);
if (ctx.setLineDash) {
// IE 9 and 10 do not support line dash
ctx.setLineDash(itemOrDefault(legendItem.lineDash, Chart.defaults.global.elements.line.borderDash));
}
// Draw the box
ctx.strokeRect(cursor.x, cursor.y, this.options.labels.boxWidth, this.options.labels.fontSize);
ctx.fillRect(cursor.x, cursor.y, this.options.labels.boxWidth, this.options.labels.fontSize);
ctx.restore();
this.legendHitBoxes[i].left = cursor.x;
this.legendHitBoxes[i].top = cursor.y;
// Fill the actual label
ctx.fillText(legendItem.text, this.options.labels.boxWidth + (this.options.labels.fontSize / 2) + cursor.x, cursor.y);
if (legendItem.hidden) {
// Strikethrough the text if hidden
ctx.beginPath();
ctx.lineWidth = 2;
ctx.moveTo(this.options.labels.boxWidth + (this.options.labels.fontSize / 2) + cursor.x, cursor.y + (this.options.labels.fontSize / 2));
ctx.lineTo(this.options.labels.boxWidth + (this.options.labels.fontSize / 2) + cursor.x + textWidth, cursor.y + (this.options.labels.fontSize / 2));
ctx.stroke();
}
cursor.x += width + (this.options.labels.padding);
}, this);
} else {
}
}
},
// Handle an event
handleEvent: function(e) {
var position = helpers.getRelativePosition(e, this.chart.chart);
if (position.x >= this.left && position.x <= this.right && position.y >= this.top && position.y <= this.bottom) {
// See if we are touching one of the dataset boxes
for (var i = 0; i < this.legendHitBoxes.length; ++i) {
var hitBox = this.legendHitBoxes[i];
if (position.x >= hitBox.left && position.x <= hitBox.left + hitBox.width && position.y >= hitBox.top && position.y <= hitBox.top + hitBox.height) {
// Touching an element
if (this.options.onClick) {
this.options.onClick.call(this, e, this.legendItems[i]);
}
break;
}
}
}
}
});
}).call(this);
(function() {
"use strict";
var root = this,
Chart = root.Chart,
helpers = Chart.helpers;
Chart.defaults.scale = {
display: true,
// grid line settings
gridLines: {
display: true,
color: "rgba(0, 0, 0, 0.1)",
lineWidth: 1,
drawOnChartArea: true,
drawTicks: true,
zeroLineWidth: 1,
zeroLineColor: "rgba(0,0,0,0.25)",
offsetGridLines: false,
},
// scale label
scaleLabel: {
fontColor: '#666',
fontFamily: 'Helvetica Neue',
fontSize: 12,
fontStyle: 'normal',
// actual label
labelString: '',
// display property
display: false,
},
// label settings
ticks: {
beginAtZero: false,
fontSize: 12,
fontStyle: "normal",
fontColor: "#666",
fontFamily: "Helvetica Neue",
maxRotation: 90,
mirror: false,
padding: 10,
reverse: false,
display: true,
autoSkip: true,
autoSkipPadding: 20,
callback: function(value) {
return '' + value;
},
},
};
Chart.Scale = Chart.Element.extend({
// 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) {
// Update Lifecycle - Probably don't want to ever extend or overwrite this function ;)
this.beforeUpdate();
// Absorb the master measurements
this.maxWidth = maxWidth;
this.maxHeight = maxHeight;
this.margins = helpers.extend({
left: 0,
right: 0,
top: 0,
bottom: 0
}, margins);
// Dimensions
this.beforeSetDimensions();
this.setDimensions();
this.afterSetDimensions();
// Data min/max
this.beforeDataLimits();
this.determineDataLimits();
this.afterDataLimits();
// Ticks
this.beforeBuildTicks();
this.buildTicks();
this.afterBuildTicks();
this.beforeTickToLabelConversion();
this.convertTicksToLabels();
this.afterTickToLabelConversion();
// Tick Rotation
this.beforeCalculateTickRotation();
this.calculateTickRotation();
this.afterCalculateTickRotation();
// Fit
this.beforeFit();
this.fit();
this.afterFit();
//
this.afterUpdate();
return this.minSize;
},
afterUpdate: function() {
helpers.callCallback(this.options.afterUpdate, [this]);
},
//
beforeSetDimensions: function() {
helpers.callCallback(this.options.beforeSetDimensions, [this]);
},
setDimensions: function() {
// Set the unconstrained dimension before label rotation
if (this.isHorizontal()) {
// Reset position before calculating rotation
this.width = this.maxWidth;
this.left = 0;
this.right = this.width;
} else {
this.height = this.maxHeight;
// Reset position before calculating rotation
this.top = 0;
this.bottom = this.height;
}
// Reset padding
this.paddingLeft = 0;
this.paddingTop = 0;
this.paddingRight = 0;
this.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() {
// Convert ticks to strings
this.ticks = this.ticks.map(function(numericalTick, index, ticks) {
if (this.options.ticks.userCallback) {
return this.options.ticks.userCallback(numericalTick, index, ticks);
}
return this.options.ticks.callback(numericalTick, index, ticks);
},
this);
},
afterTickToLabelConversion: function() {
helpers.callCallback(this.options.afterTickToLabelConversion, [this]);
},
//
beforeCalculateTickRotation: function() {
helpers.callCallback(this.options.beforeCalculateTickRotation, [this]);
},
calculateTickRotation: function() {
//Get the width of each grid by calculating the difference
//between x offsets between 0 and 1.
var labelFont = helpers.fontString(this.options.ticks.fontSize, this.options.ticks.fontStyle, this.options.ticks.fontFamily);
this.ctx.font = labelFont;
var firstWidth = this.ctx.measureText(this.ticks[0]).width;
var lastWidth = this.ctx.measureText(this.ticks[this.ticks.length - 1]).width;
var firstRotated;
var lastRotated;
this.paddingRight = lastWidth / 2 + 3;
this.paddingLeft = firstWidth / 2 + 3;
this.labelRotation = 0;
if (this.options.display && this.isHorizontal()) {
var originalLabelWidth = helpers.longestText(this.ctx, labelFont, this.ticks);
var cosRotation;
var sinRotation;
this.labelWidth = originalLabelWidth;
// Allow 3 pixels x2 padding either side for label readability
// only the index matters for a dataset scale, but we want a consistent interface between scales
var tickWidth = this.getPixelForTick(1) - this.getPixelForTick(0) - 6;
//Max label rotation can be set or default to 90 - also act as a loop counter
while (this.labelWidth > tickWidth && this.labelRotation < this.options.ticks.maxRotation) {
cosRotation = Math.cos(helpers.toRadians(this.labelRotation));
sinRotation = Math.sin(helpers.toRadians(this.labelRotation));
firstRotated = cosRotation * firstWidth;
lastRotated = cosRotation * lastWidth;
// We're right aligning the text now.
if (firstRotated + this.options.ticks.fontSize / 2 > this.yLabelWidth) {
this.paddingLeft = firstRotated + this.options.ticks.fontSize / 2;
}
this.paddingRight = this.options.ticks.fontSize / 2;
if (sinRotation * originalLabelWidth > this.maxHeight) {
// go back one step
this.labelRotation--;
break;
}
this.labelRotation++;
this.labelWidth = cosRotation * originalLabelWidth;
}
} else {
this.labelWidth = 0;
this.paddingRight = 0;
this.paddingLeft = 0;
}
if (this.margins) {
this.paddingLeft -= this.margins.left;
this.paddingRight -= this.margins.right;
this.paddingLeft = Math.max(this.paddingLeft, 0);
this.paddingRight = Math.max(this.paddingRight, 0);
}
},
afterCalculateTickRotation: function() {
helpers.callCallback(this.options.afterCalculateTickRotation, [this]);
},
//
beforeFit: function() {
helpers.callCallback(this.options.beforeFit, [this]);
},
fit: function() {
this.minSize = {
width: 0,
height: 0,
};
// Width
if (this.isHorizontal()) {
// subtract the margins to line up with the chartArea if we are a full width scale
this.minSize.width = this.isFullWidth() ? this.maxWidth - this.margins.left - this.margins.right : this.maxWidth;
} else {
this.minSize.width = this.options.gridLines.display && this.options.display ? 10 : 0;
}
// height
if (this.isHorizontal()) {
this.minSize.height = this.options.gridLines.display && this.options.display ? 10 : 0;
} else {
this.minSize.height = this.maxHeight; // fill all the height
}
// Are we showing a title for the scale?
if (this.options.scaleLabel.display) {
if (this.isHorizontal()) {
this.minSize.height += (this.options.scaleLabel.fontSize * 1.5);
} else {
this.minSize.width += (this.options.scaleLabel.fontSize * 1.5);
}
}
if (this.options.ticks.display && this.options.display) {
// Don't bother fitting the ticks if we are not showing them
var labelFont = helpers.fontString(this.options.ticks.fontSize,
this.options.ticks.fontStyle, this.options.ticks.fontFamily);
if (this.isHorizontal()) {
// A horizontal axis is more constrained by the height.
this.longestLabelWidth = helpers.longestText(this.ctx, labelFont, this.ticks);
// TODO - improve this calculation
var labelHeight = (Math.sin(helpers.toRadians(this.labelRotation)) * this.longestLabelWidth) + 1.5 * this.options.ticks.fontSize;
this.minSize.height = Math.min(this.maxHeight, this.minSize.height + labelHeight);
labelFont = helpers.fontString(this.options.ticks.fontSize, this.options.ticks.fontStyle, this.options.ticks.fontFamily);
this.ctx.font = labelFont;
var firstLabelWidth = this.ctx.measureText(this.ticks[0]).width;
var lastLabelWidth = this.ctx.measureText(this.ticks[this.ticks.length - 1]).width;
// 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
var cosRotation = Math.cos(helpers.toRadians(this.labelRotation));
var sinRotation = Math.sin(helpers.toRadians(this.labelRotation));
this.paddingLeft = this.labelRotation !== 0 ? (cosRotation * firstLabelWidth) + 3 : firstLabelWidth / 2 + 3; // add 3 px to move away from canvas edges
this.paddingRight = this.labelRotation !== 0 ? (sinRotation * (this.options.ticks.fontSize / 2)) + 3 : lastLabelWidth / 2 + 3; // when rotated
} else {
// A vertical axis is more constrained by the width. Labels are the dominant factor here, so get that length first
var maxLabelWidth = this.maxWidth - this.minSize.width;
var largestTextWidth = helpers.longestText(this.ctx, labelFont, this.ticks);
// Account for padding
if (!this.options.ticks.mirror) {
largestTextWidth += this.options.ticks.padding;
}
if (largestTextWidth < maxLabelWidth) {
// We don't need all the room
this.minSize.width += largestTextWidth;
} else {
// Expand to max size
this.minSize.width = this.maxWidth;
}
this.paddingTop = this.options.ticks.fontSize / 2;
this.paddingBottom = this.options.ticks.fontSize / 2;
}
}
if (this.margins) {
this.paddingLeft -= this.margins.left;
this.paddingTop -= this.margins.top;
this.paddingRight -= this.margins.right;
this.paddingBottom -= this.margins.bottom;
this.paddingLeft = Math.max(this.paddingLeft, 0);
this.paddingTop = Math.max(this.paddingTop, 0);
this.paddingRight = Math.max(this.paddingRight, 0);
this.paddingBottom = Math.max(this.paddingBottom, 0);
}
this.width = this.minSize.width;
this.height = this.minSize.height;
},
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 getRightValue(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
if (typeof(rawValue) === 'number' && isNaN(rawValue)) {
return NaN;
}
// If it is in fact an object, dive in one more level
if (typeof(rawValue) === "object") {
if (rawValue instanceof Date) {
return rawValue;
} else {
return 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 for tick location, should
getPixelForTick: function(index, includeOffset) {
if (this.isHorizontal()) {
var innerWidth = this.width - (this.paddingLeft + this.paddingRight);
var tickWidth = innerWidth / Math.max((this.ticks.length - ((this.options.gridLines.offsetGridLines) ? 0 : 1)), 1);
var pixel = (tickWidth * index) + this.paddingLeft;
if (includeOffset) {
pixel += tickWidth / 2;
}
var finalVal = this.left + Math.round(pixel);
finalVal += this.isFullWidth() ? this.margins.left : 0;
return finalVal;
} else {
var innerHeight = this.height - (this.paddingTop + this.paddingBottom);
return this.top + (index * (innerHeight / (this.ticks.length - 1)));
}
},
// Utility for getting the pixel location of a percentage of scale
getPixelForDecimal: function(decimal/*, includeOffset*/) {
if (this.isHorizontal()) {
var innerWidth = this.width - (this.paddingLeft + this.paddingRight);
var valueOffset = (innerWidth * decimal) + this.paddingLeft;
var finalVal = this.left + Math.round(valueOffset);
finalVal += this.isFullWidth() ? this.margins.left : 0;
return finalVal;
} else {
return this.top + (decimal * this.height);
}
},
// Actualy draw the scale on the canvas
// @param {rectangle} chartArea : the area of the chart to draw full grid lines on
draw: function(chartArea) {
if (this.options.display) {
var setContextLineSettings;
var isRotated = this.labelRotation !== 0;
var skipRatio;
var scaleLabelX;
var scaleLabelY;
var useAutoskipper = this.options.ticks.autoSkip;
// Make sure we draw text in the correct color and font
this.ctx.fillStyle = this.options.ticks.fontColor;
var labelFont = helpers.fontString(this.options.ticks.fontSize, this.options.ticks.fontStyle, this.options.ticks.fontFamily);
var cosRotation = Math.cos(helpers.toRadians(this.labelRotation));
var sinRotation = Math.sin(helpers.toRadians(this.labelRotation));
var longestRotatedLabel = this.longestLabelWidth * cosRotation;
var rotatedLabelHeight = this.options.ticks.fontSize * sinRotation;
if (this.isHorizontal()) {
setContextLineSettings = true;
var yTickStart = this.options.position === "bottom" ? this.top : this.bottom - 10;
var yTickEnd = this.options.position === "bottom" ? this.top + 10 : this.bottom;
skipRatio = false;
if (((longestRotatedLabel / 2) + this.options.ticks.autoSkipPadding) * this.ticks.length > (this.width - (this.paddingLeft + this.paddingRight))) {
skipRatio = 1 + Math.floor((((longestRotatedLabel / 2) + this.options.ticks.autoSkipPadding) * this.ticks.length) / (this.width - (this.paddingLeft + this.paddingRight)));
}
if (!useAutoskipper) {
skipRatio = false;
}
helpers.each(this.ticks, function(label, index) {
// Blank ticks
if ((skipRatio > 1 && index % skipRatio > 0) || (label === undefined || label === null)) {
return;
}
var xLineValue = this.getPixelForTick(index); // xvalues for grid lines
var xLabelValue = this.getPixelForTick(index, this.options.gridLines.offsetGridLines); // x values for ticks (need to consider offsetLabel option)
if (this.options.gridLines.display) {
if (index === (typeof this.zeroLineIndex !== 'undefined' ? this.zeroLineIndex : 0)) {
// Draw the first index specially
this.ctx.lineWidth = this.options.gridLines.zeroLineWidth;
this.ctx.strokeStyle = this.options.gridLines.zeroLineColor;
setContextLineSettings = true; // reset next time
} else if (setContextLineSettings) {
this.ctx.lineWidth = this.options.gridLines.lineWidth;
this.ctx.strokeStyle = this.options.gridLines.color;
setContextLineSettings = false;
}
xLineValue += helpers.aliasPixel(this.ctx.lineWidth);
// Draw the label area
this.ctx.beginPath();
if (this.options.gridLines.drawTicks) {
this.ctx.moveTo(xLineValue, yTickStart);
this.ctx.lineTo(xLineValue, yTickEnd);
}
// Draw the chart area
if (this.options.gridLines.drawOnChartArea) {
this.ctx.moveTo(xLineValue, chartArea.top);
this.ctx.lineTo(xLineValue, chartArea.bottom);
}
// Need to stroke in the loop because we are potentially changing line widths & colours
this.ctx.stroke();
}
if (this.options.ticks.display) {
this.ctx.save();
this.ctx.translate(xLabelValue, (isRotated) ? this.top + 12 : this.options.position === "top" ? this.bottom - 10 : this.top + 10);
this.ctx.rotate(helpers.toRadians(this.labelRotation) * -1);
this.ctx.font = labelFont;
this.ctx.textAlign = (isRotated) ? "right" : "center";
this.ctx.textBaseline = (isRotated) ? "middle" : this.options.position === "top" ? "bottom" : "top";
this.ctx.fillText(label, 0, 0);
this.ctx.restore();
}
}, this);
if (this.options.scaleLabel.display) {
// Draw the scale label
this.ctx.textAlign = "center";
this.ctx.textBaseline = 'middle';
this.ctx.fillStyle = this.options.scaleLabel.fontColor; // render in correct colour
this.ctx.font = helpers.fontString(this.options.scaleLabel.fontSize, this.options.scaleLabel.fontStyle, this.options.scaleLabel.fontFamily);
scaleLabelX = this.left + ((this.right - this.left) / 2); // midpoint of the width
scaleLabelY = this.options.position === 'bottom' ? this.bottom - (this.options.scaleLabel.fontSize / 2) : this.top + (this.options.scaleLabel.fontSize / 2);
this.ctx.fillText(this.options.scaleLabel.labelString, scaleLabelX, scaleLabelY);
}
} else {
setContextLineSettings = true;
var xTickStart = this.options.position === "right" ? this.left : this.right - 5;
var xTickEnd = this.options.position === "right" ? this.left + 5 : this.right;
helpers.each(this.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 yLineValue = this.getPixelForTick(index); // xvalues for grid lines
if (this.options.gridLines.display) {
if (index === (typeof this.zeroLineIndex !== 'undefined' ? this.zeroLineIndex : 0)) {
// Draw the first index specially
this.ctx.lineWidth = this.options.gridLines.zeroLineWidth;
this.ctx.strokeStyle = this.options.gridLines.zeroLineColor;
setContextLineSettings = true; // reset next time
} else if (setContextLineSettings) {
this.ctx.lineWidth = this.options.gridLines.lineWidth;
this.ctx.strokeStyle = this.options.gridLines.color;
setContextLineSettings = false;
}
yLineValue += helpers.aliasPixel(this.ctx.lineWidth);
// Draw the label area
this.ctx.beginPath();
if (this.options.gridLines.drawTicks) {
this.ctx.moveTo(xTickStart, yLineValue);
this.ctx.lineTo(xTickEnd, yLineValue);
}
// Draw the chart area
if (this.options.gridLines.drawOnChartArea) {
this.ctx.moveTo(chartArea.left, yLineValue);
this.ctx.lineTo(chartArea.right, yLineValue);
}
// Need to stroke in the loop because we are potentially changing line widths & colours
this.ctx.stroke();
}
if (this.options.ticks.display) {
var xLabelValue;
var yLabelValue = this.getPixelForTick(index, this.options.gridLines.offsetGridLines); // x values for ticks (need to consider offsetLabel option)
this.ctx.save();
if (this.options.position === "left") {
if (this.options.ticks.mirror) {
xLabelValue = this.right + this.options.ticks.padding;
this.ctx.textAlign = "left";
} else {
xLabelValue = this.right - this.options.ticks.padding;
this.ctx.textAlign = "right";
}
} else {
// right side
if (this.options.ticks.mirror) {
xLabelValue = this.left - this.options.ticks.padding;
this.ctx.textAlign = "right";
} else {
xLabelValue = this.left + this.options.ticks.padding;
this.ctx.textAlign = "left";
}
}
this.ctx.translate(xLabelValue, yLabelValue);
this.ctx.rotate(helpers.toRadians(this.labelRotation) * -1);
this.ctx.font = labelFont;
this.ctx.textBaseline = "middle";
this.ctx.fillText(label, 0, 0);
this.ctx.restore();
}
}, this);
if (this.options.scaleLabel.display) {
// Draw the scale label
scaleLabelX = this.options.position === 'left' ? this.left + (this.options.scaleLabel.fontSize / 2) : this.right - (this.options.scaleLabel.fontSize / 2);
scaleLabelY = this.top + ((this.bottom - this.top) / 2);
var rotation = this.options.position === 'left' ? -0.5 * Math.PI : 0.5 * Math.PI;
this.ctx.save();
this.ctx.translate(scaleLabelX, scaleLabelY);
this.ctx.rotate(rotation);
this.ctx.textAlign = "center";
this.ctx.fillStyle = this.options.scaleLabel.fontColor; // render in correct colour
this.ctx.font = helpers.fontString(this.options.scaleLabel.fontSize, this.options.scaleLabel.fontStyle, this.options.scaleLabel.fontFamily);
this.ctx.textBaseline = 'middle';
this.ctx.fillText(this.options.scaleLabel.labelString, 0, 0);
this.ctx.restore();
}
}
}
}
});
}).call(this);
(function() {
"use strict";
var root = this,
Chart = root.Chart,
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]) : {};
},
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);
});
},
};
}).call(this);
(function() {
"use strict";
var root = this,
Chart = root.Chart,
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)
fontColor: '#666',
fontFamily: 'Helvetica Neue',
fontSize: 12,
fontStyle: 'bold',
padding: 10,
// actual title
text: '',
};
Chart.Title = Chart.Element.extend({
initialize: function(config) {
helpers.extend(this, config);
this.options = helpers.configMerge(Chart.defaults.global.title, config.options);
// Contains hit boxes for each dataset (in dataset order)
this.legendHitBoxes = [];
},
// These methods are ordered by lifecyle. Utilities then follow.
beforeUpdate: helpers.noop,
update: function(maxWidth, maxHeight, margins) {
// Update Lifecycle - Probably don't want to ever extend or overwrite this function ;)
this.beforeUpdate();
// Absorb the master measurements
this.maxWidth = maxWidth;
this.maxHeight = maxHeight;
this.margins = margins;
// Dimensions
this.beforeSetDimensions();
this.setDimensions();
this.afterSetDimensions();
// Labels
this.beforeBuildLabels();
this.buildLabels();
this.afterBuildLabels();
// Fit
this.beforeFit();
this.fit();
this.afterFit();
//
this.afterUpdate();
return this.minSize;
},
afterUpdate: helpers.noop,
//
beforeSetDimensions: helpers.noop,
setDimensions: function() {
// Set the unconstrained dimension before label rotation
if (this.isHorizontal()) {
// Reset position before calculating rotation
this.width = this.maxWidth;
this.left = 0;
this.right = this.width;
} else {
this.height = this.maxHeight;
// Reset position before calculating rotation
this.top = 0;
this.bottom = this.height;
}
// Reset padding
this.paddingLeft = 0;
this.paddingTop = 0;
this.paddingRight = 0;
this.paddingBottom = 0;
// Reset minSize
this.minSize = {
width: 0,
height: 0,
};
},
afterSetDimensions: helpers.noop,
//
beforeBuildLabels: helpers.noop,
buildLabels: helpers.noop,
afterBuildLabels: helpers.noop,
//
beforeFit: helpers.noop,
fit: function() {
var ctx = this.ctx;
var titleFont = helpers.fontString(this.options.fontSize, this.options.fontStyle, this.options.fontFamily);
// Width
if (this.isHorizontal()) {
this.minSize.width = this.maxWidth; // fill all the width
} else {
this.minSize.width = 0;
}
// height
if (this.isHorizontal()) {
this.minSize.height = 0;
} else {
this.minSize.height = this.maxHeight; // fill all the height
}
// Increase sizes here
if (this.isHorizontal()) {
// Title
if (this.options.display) {
this.minSize.height += this.options.fontSize + (this.options.padding * 2);
}
} else {
// TODO vertical
}
this.width = this.minSize.width;
this.height = this.minSize.height;
},
afterFit: helpers.noop,
// Shared Methods
isHorizontal: function() {
return this.options.position == "top" || this.options.position == "bottom";
},
// Actualy draw the title block on the canvas
draw: function() {
if (this.options.display) {
var ctx = this.ctx;
var titleX, titleY;
// Horizontal
if (this.isHorizontal()) {
// Title
if (this.options.display) {
ctx.textAlign = "center";
ctx.textBaseline = 'middle';
ctx.fillStyle = this.options.fontColor; // render in correct colour
ctx.font = helpers.fontString(this.options.fontSize, this.options.fontStyle, this.options.fontFamily);
titleX = this.left + ((this.right - this.left) / 2); // midpoint of the width
titleY = this.top + ((this.bottom - this.top) / 2); // midpoint of the height
ctx.fillText(this.options.text, titleX, titleY);
}
} else {
// Title
if (this.options.display) {
titleX = this.options.position == 'left' ? this.left + (this.options.fontSize / 2) : this.right - (this.options.fontSize / 2);
titleY = this.top + ((this.bottom - this.top) / 2);
var rotation = this.options.position == 'left' ? -0.5 * Math.PI : 0.5 * Math.PI;
ctx.save();
ctx.translate(titleX, titleY);
ctx.rotate(rotation);
ctx.textAlign = "center";
ctx.fillStyle = this.options.fontColor; // render in correct colour
ctx.font = helpers.fontString(this.options.fontSize, this.options.fontStyle, this.options.fontFamily);
ctx.textBaseline = 'middle';
ctx.fillText(this.options.text, 0, 0);
ctx.restore();
}
}
}
}
});
}).call(this);
(function() {
"use strict";
var root = this,
Chart = root.Chart,
helpers = Chart.helpers;
Chart.defaults.global.tooltips = {
enabled: true,
custom: null,
mode: 'single',
backgroundColor: "rgba(0,0,0,0.8)",
titleFontFamily: "'Helvetica Neue', 'Helvetica', 'Arial', sans-serif",
titleFontSize: 12,
titleFontStyle: "bold",
titleSpacing: 2,
titleMarginBottom: 6,
titleColor: "#fff",
titleAlign: "left",
bodyFontFamily: "'Helvetica Neue', 'Helvetica', 'Arial', sans-serif",
bodyFontSize: 12,
bodyFontStyle: "normal",
bodySpacing: 2,
bodyColor: "#fff",
bodyAlign: "left",
footerFontFamily: "'Helvetica Neue', 'Helvetica', 'Arial', sans-serif",
footerFontSize: 12,
footerFontStyle: "bold",
footerSpacing: 2,
footerMarginTop: 6,
footerColor: "#fff",
footerAlign: "left",
yPadding: 6,
xPadding: 6,
caretSize: 5,
cornerRadius: 6,
multiKeyBackground: '#fff',
callbacks: {
// Args are: (tooltipItems, data)
beforeTitle: helpers.noop,
title: function(tooltipItems, data) {
// Pick first xLabel for now
var title = '';
if (tooltipItems.length > 0) {
if (tooltipItems[0].xLabel) {
title = tooltipItems[0].xLabel;
} else if (data.labels.length > 0 && tooltipItems[0].index < data.labels.length) {
title = data.labels[tooltipItems[0].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;
},
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);
} else {
base.push(toPush);
}
}
return base;
}
Chart.Tooltip = Chart.Element.extend({
initialize: function() {
var options = this._options;
helpers.extend(this, {
_model: {
// Positioning
xPadding: options.tooltips.xPadding,
yPadding: options.tooltips.yPadding,
// Body
bodyColor: options.tooltips.bodyColor,
_bodyFontFamily: options.tooltips.bodyFontFamily,
_bodyFontStyle: options.tooltips.bodyFontStyle,
_bodyAlign: options.tooltips.bodyAlign,
bodyFontSize: options.tooltips.bodyFontSize,
bodySpacing: options.tooltips.bodySpacing,
// Title
titleColor: options.tooltips.titleColor,
_titleFontFamily: options.tooltips.titleFontFamily,
_titleFontStyle: options.tooltips.titleFontStyle,
titleFontSize: options.tooltips.titleFontSize,
_titleAlign: options.tooltips.titleAlign,
titleSpacing: options.tooltips.titleSpacing,
titleMarginBottom: options.tooltips.titleMarginBottom,
// Footer
footerColor: options.tooltips.footerColor,
_footerFontFamily: options.tooltips.footerFontFamily,
_footerFontStyle: options.tooltips.footerFontStyle,
footerFontSize: options.tooltips.footerFontSize,
_footerAlign: options.tooltips.footerAlign,
footerSpacing: options.tooltips.footerSpacing,
footerMarginTop: options.tooltips.footerMarginTop,
// Appearance
caretSize: options.tooltips.caretSize,
cornerRadius: options.tooltips.cornerRadius,
backgroundColor: options.tooltips.backgroundColor,
opacity: 0,
legendColorBackground: options.tooltips.multiKeyBackground,
},
});
},
// Get the title
// Args are: (tooltipItem, data)
getTitle: function() {
var beforeTitle = this._options.tooltips.callbacks.beforeTitle.apply(this, arguments),
title = this._options.tooltips.callbacks.title.apply(this, arguments),
afterTitle = this._options.tooltips.callbacks.afterTitle.apply(this, 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.tooltips.callbacks.beforeBody.apply(this, arguments);
return helpers.isArray(lines) ? lines : lines !== undefined ? [lines] : [];
},
// Args are: (tooltipItem, data)
getBody: function(tooltipItems, data) {
var lines = [];
helpers.each(tooltipItems, function(bodyItem) {
var beforeLabel = this._options.tooltips.callbacks.beforeLabel.call(this, bodyItem, data) || '';
var bodyLabel = this._options.tooltips.callbacks.label.call(this, bodyItem, data) || '';
var afterLabel = this._options.tooltips.callbacks.afterLabel.call(this, bodyItem, data) || '';
lines.push(beforeLabel + bodyLabel + afterLabel);
}, this);
return lines;
},
// Args are: (tooltipItem, data)
getAfterBody: function() {
var lines = this._options.tooltips.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 beforeFooter = this._options.tooltips.callbacks.beforeFooter.apply(this, arguments);
var footer = this._options.tooltips.callbacks.footer.apply(this, arguments);
var afterFooter = this._options.tooltips.callbacks.afterFooter.apply(this, arguments);
var lines = [];
lines = pushOrConcat(lines, beforeFooter);
lines = pushOrConcat(lines, footer);
lines = pushOrConcat(lines, afterFooter);
return lines;
},
getAveragePosition: function(elements){
if(!elements.length){
return false;
}
var xPositions = [];
var yPositions = [];
helpers.each(elements, function(el){
if(el) {
var pos = el.tooltipPosition();
xPositions.push(pos.x);
yPositions.push(pos.y);
}
});
var x = 0, y = 0;
for (var i = 0; i < xPositions.length; i++) {
x += xPositions[i];
y += yPositions[i];
}
return {
x: Math.round(x / xPositions.length),
y: Math.round(y / xPositions.length)
};
},
update: function(changed) {
if (this._active.length){
this._model.opacity = 1;
var element = this._active[0],
labelColors = [],
tooltipPosition;
var tooltipItems = [];
if (this._options.tooltips.mode === 'single') {
var yScale = element._yScale || element._scale; // handle radar || polarArea charts
tooltipItems.push({
xLabel: element._xScale ? element._xScale.getLabelForIndex(element._index, element._datasetIndex) : '',
yLabel: yScale ? yScale.getLabelForIndex(element._index, element._datasetIndex) : '',
index: element._index,
datasetIndex: element._datasetIndex,
});
tooltipPosition = this.getAveragePosition(this._active);
} else {
helpers.each(this._data.datasets, function(dataset, datasetIndex) {
if (!helpers.isDatasetVisible(dataset)) {
return;
}
var currentElement = dataset.metaData[element._index];
if (currentElement) {
var yScale = element._yScale || element._scale; // handle radar || polarArea charts
tooltipItems.push({
xLabel: currentElement._xScale ? currentElement._xScale.getLabelForIndex(currentElement._index, currentElement._datasetIndex) : '',
yLabel: yScale ? yScale.getLabelForIndex(currentElement._index, currentElement._datasetIndex) : '',
index: element._index,
datasetIndex: datasetIndex,
});
}
});
helpers.each(this._active, function(active) {
if (active) {
labelColors.push({
borderColor: active._view.borderColor,
backgroundColor: active._view.backgroundColor
});
}
}, this);
tooltipPosition = this.getAveragePosition(this._active);
tooltipPosition.y = this._active[0]._yScale.getPixelForDecimal(0.5);
}
// Build the Text Lines
helpers.extend(this._model, {
title: this.getTitle(tooltipItems, this._data),
beforeBody: this.getBeforeBody(tooltipItems, this._data),
body: this.getBody(tooltipItems, this._data),
afterBody: this.getAfterBody(tooltipItems, this._data),
footer: this.getFooter(tooltipItems, this._data),
});
helpers.extend(this._model, {
x: Math.round(tooltipPosition.x),
y: Math.round(tooltipPosition.y),
caretPadding: helpers.getValueOrDefault(tooltipPosition.padding, 2),
labelColors: labelColors,
});
// We need to determine alignment of
var tooltipSize = this.getTooltipSize(this._model);
this.determineAlignment(tooltipSize); // Smart Tooltip placement to stay on the canvas
helpers.extend(this._model, this.getBackgroundPoint(this._model, tooltipSize));
}
else{
this._model.opacity = 0;
}
if (changed && this._options.tooltips.custom) {
this._options.tooltips.custom.call(this, this._model);
}
return this;
},
getTooltipSize: function getTooltipSize(vm) {
var ctx = this._chart.ctx;
var size = {
height: vm.yPadding * 2, // Tooltip Padding
width: 0
};
var combinedBodyLength = vm.body.length + vm.beforeBody.length + vm.afterBody.length;
size.height += vm.title.length * vm.titleFontSize; // Title Lines
size.height += (vm.title.length - 1) * vm.titleSpacing; // Title Line Spacing
size.height += vm.title.length ? vm.titleMarginBottom : 0; // Title's bottom Margin
size.height += combinedBodyLength * vm.bodyFontSize; // Body Lines
size.height += combinedBodyLength ? (combinedBodyLength - 1) * vm.bodySpacing : 0; // Body Line Spacing
size.height += vm.footer.length ? vm.footerMarginTop : 0; // Footer Margin
size.height += vm.footer.length * (vm.footerFontSize); // Footer Lines
size.height += vm.footer.length ? (vm.footer.length - 1) * vm.footerSpacing : 0; // Footer Line Spacing
// Width
ctx.font = helpers.fontString(vm.titleFontSize, vm._titleFontStyle, vm._titleFontFamily);
helpers.each(vm.title, function(line) {
size.width = Math.max(size.width, ctx.measureText(line).width);
});
ctx.font = helpers.fontString(vm.bodyFontSize, vm._bodyFontStyle, vm._bodyFontFamily);
helpers.each(vm.beforeBody.concat(vm.afterBody), function(line) {
size.width = Math.max(size.width, ctx.measureText(line).width);
}, this);
helpers.each(vm.body, function(line) {
size.width = Math.max(size.width, ctx.measureText(line).width + (this._options.tooltips.mode !== 'single' ? (vm.bodyFontSize + 2) : 0));
}, this);
ctx.font = helpers.fontString(vm.footerFontSize, vm._footerFontStyle, vm._footerFontFamily);
helpers.each(vm.footer, function(line) {
size.width = Math.max(size.width, ctx.measureText(line).width);
});
size.width += 2 * vm.xPadding;
return size;
},
determineAlignment: function determineAlignment(size) {
this._model.xAlign = this._model.yAlign = "center";
if (this._model.y < size.height) {
this._model.yAlign = 'top';
} else if (this._model.y > (this._chart.height - size.height)) {
this._model.yAlign = 'bottom';
}
var lf, rf;
var _this = this;
var midX = (this._chartInstance.chartArea.left + this._chartInstance.chartArea.right) / 2;
if (this._model.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 >= (_this._chart.width - (size.width / 2)); };
}
if (lf(this._model.x)) {
this._model.xAlign = 'left';
} else if (rf(this._model.x)) {
this._model.xAlign = 'right';
}
},
getBackgroundPoint: function getBackgroundPoint(vm, size) {
// Background Position
var pt = {
x: vm.x,
y: vm.y
};
if (vm.xAlign === 'right') {
pt.x -= size.width;
} else if (vm.xAlign === 'center') {
pt.x -= (size.width / 2);
}
if (vm.yAlign === 'top') {
pt.y += vm.caretPadding + vm.caretSize;
} else if (vm.yAlign === 'bottom') {
pt.y -= size.height + vm.caretPadding + vm.caretSize;
} else {
pt.y -= (size.height / 2);
}
if (vm.yAlign == 'center') {
if (vm.xAlign === 'left') {
pt.x += vm.caretPadding + vm.caretSize;
} else if (vm.xAlign === 'right') {
pt.x -= vm.caretPadding + vm.caretSize;
}
} else {
if (vm.xAlign === 'left') {
pt.x -= vm.cornerRadius + vm.caretPadding;
} else if (vm.xAlign === 'right') {
pt.x += vm.cornerRadius + vm.caretPadding;
}
}
return pt;
},
drawCaret: function drawCaret(tooltipPoint, size, opacity, caretPadding) {
var vm = this._view;
var ctx = this._chart.ctx;
var x1, x2, x3;
var y1, y2, y3;
if (vm.yAlign === 'center') {
// Left or right side
if (vm.xAlign === 'left') {
x1 = tooltipPoint.x;
x2 = x1 - vm.caretSize;
x3 = x1;
} else {
x1 = tooltipPoint.x + size.width;
x2 = x1 + vm.caretSize;
x3 = x1;
}
y2 = tooltipPoint.y + (size.height / 2);
y1 = y2 - vm.caretSize;
y3 = y2 + vm.caretSize;
} else {
if (vm.xAlign === 'left') {
x1 = tooltipPoint.x + vm.cornerRadius;
x2 = x1 + vm.caretSize;
x3 = x2 + vm.caretSize;
} else if (vm.xAlign === 'right') {
x1 = tooltipPoint.x + size.width - vm.cornerRadius;
x2 = x1 - vm.caretSize;
x3 = x2 - vm.caretSize;
} else {
x2 = tooltipPoint.x + (size.width / 2);
x1 = x2 - vm.caretSize;
x3 = x2 + vm.caretSize;
}
if (vm.yAlign === 'top') {
y1 = tooltipPoint.y;
y2 = y1 - vm.caretSize;
y3 = y1;
} else {
y1 = tooltipPoint.y + size.height;
y2 = y1 + vm.caretSize;
y3 = y1;
}
}
ctx.fillStyle = helpers.color(vm.backgroundColor).alpha(opacity).rgbString();
ctx.beginPath();
ctx.moveTo(x1, y1);
ctx.lineTo(x2, y2);
ctx.lineTo(x3, y3);
ctx.closePath();
ctx.fill();
},
drawTitle: function drawTitle(pt, vm, ctx, opacity) {
if (vm.title.length) {
ctx.textAlign = vm._titleAlign;
ctx.textBaseline = "top";
ctx.fillStyle = helpers.color(vm.titleColor).alpha(opacity).rgbString();
ctx.font = helpers.fontString(vm.titleFontSize, vm._titleFontStyle, vm._titleFontFamily);
helpers.each(vm.title, function(title, i) {
ctx.fillText(title, pt.x, pt.y);
pt.y += vm.titleFontSize + vm.titleSpacing; // Line Height and spacing
if (i + 1 === vm.title.length) {
pt.y += vm.titleMarginBottom - vm.titleSpacing; // If Last, add margin, remove spacing
}
}, this);
}
},
drawBody: function drawBody(pt, vm, ctx, opacity) {
ctx.textAlign = vm._bodyAlign;
ctx.textBaseline = "top";
ctx.fillStyle = helpers.color(vm.bodyColor).alpha(opacity).rgbString();
ctx.font = helpers.fontString(vm.bodyFontSize, vm._bodyFontStyle, vm._bodyFontFamily);
// Before Body
helpers.each(vm.beforeBody, function(beforeBody) {
ctx.fillText(beforeBody, pt.x, pt.y);
pt.y += vm.bodyFontSize + vm.bodySpacing;
});
helpers.each(vm.body, function(body, i) {
// Draw Legend-like boxes if needed
if (this._options.tooltips.mode !== 'single') {
// Fill a white rect so that colours merge nicely if the opacity is < 1
ctx.fillStyle = helpers.color(vm.legendColorBackground).alpha(opacity).rgbaString();
ctx.fillRect(pt.x, pt.y, vm.bodyFontSize, vm.bodyFontSize);
// Border
ctx.strokeStyle = helpers.color(vm.labelColors[i].borderColor).alpha(opacity).rgbaString();
ctx.strokeRect(pt.x, pt.y, vm.bodyFontSize, vm.bodyFontSize);
// Inner square
ctx.fillStyle = helpers.color(vm.labelColors[i].backgroundColor).alpha(opacity).rgbaString();
ctx.fillRect(pt.x + 1, pt.y + 1, vm.bodyFontSize - 2, vm.bodyFontSize - 2);
ctx.fillStyle = helpers.color(vm.bodyColor).alpha(opacity).rgbaString(); // Return fill style for text
}
// Body Line
ctx.fillText(body, pt.x + (this._options.tooltips.mode !== 'single' ? (vm.bodyFontSize + 2) : 0), pt.y);
pt.y += vm.bodyFontSize + vm.bodySpacing;
}, this);
// After Body
helpers.each(vm.afterBody, function(afterBody) {
ctx.fillText(afterBody, pt.x, pt.y);
pt.y += vm.bodyFontSize;
});
pt.y -= vm.bodySpacing; // Remove last body spacing
},
drawFooter: function drawFooter(pt, vm, ctx, opacity) {
if (vm.footer.length) {
pt.y += vm.footerMarginTop;
ctx.textAlign = vm._footerAlign;
ctx.textBaseline = "top";
ctx.fillStyle = helpers.color(vm.footerColor).alpha(opacity).rgbString();
ctx.font = helpers.fontString(vm.footerFontSize, vm._footerFontStyle, vm._footerFontFamily);
helpers.each(vm.footer, function(footer) {
ctx.fillText(footer, pt.x, pt.y);
pt.y += vm.footerFontSize + vm.footerSpacing;
}, this);
}
},
draw: function draw() {
var ctx = this._chart.ctx;
var vm = this._view;
if (vm.opacity === 0) {
return;
}
var caretPadding = vm.caretPadding;
var tooltipSize = this.getTooltipSize(vm);
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.tooltips.enabled) {
// Draw Background
ctx.fillStyle = helpers.color(vm.backgroundColor).alpha(opacity).rgbString();
helpers.drawRoundedRectangle(ctx, pt.x, pt.y, tooltipSize.width, tooltipSize.height, vm.cornerRadius);
ctx.fill();
// Draw Caret
this.drawCaret(pt, tooltipSize, opacity, caretPadding);
// 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);
}
}
});
}).call(this);
(function() {
"use strict";
var root = this,
Chart = root.Chart,
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({
initialize: function(chart, datasetIndex) {
Chart.DatasetController.prototype.initialize.call(this, chart, datasetIndex);
// Use this to indicate that this is a bar dataset.
this.getDataset().bar = true;
},
// Get the number of datasets that display bars. We use this to correctly calculate the bar width
getBarCount: function getBarCount() {
var barCount = 0;
helpers.each(this.chart.data.datasets, function(dataset) {
if (helpers.isDatasetVisible(dataset) && dataset.bar) {
++barCount;
}
}, this);
return barCount;
},
addElements: function() {
this.getDataset().metaData = this.getDataset().metaData || [];
helpers.each(this.getDataset().data, function(value, index) {
this.getDataset().metaData[index] = this.getDataset().metaData[index] || new Chart.elements.Rectangle({
_chart: this.chart.chart,
_datasetIndex: this.index,
_index: index,
});
}, this);
},
addElementAndReset: function(index) {
this.getDataset().metaData = this.getDataset().metaData || [];
var rectangle = new Chart.elements.Rectangle({
_chart: this.chart.chart,
_datasetIndex: this.index,
_index: index,
});
var numBars = this.getBarCount();
this.updateElement(rectangle, index, true, numBars);
this.getDataset().metaData.splice(index, 0, rectangle);
},
update: function update(reset) {
var numBars = this.getBarCount();
helpers.each(this.getDataset().metaData, function(rectangle, index) {
this.updateElement(rectangle, index, reset, numBars);
}, this);
},
updateElement: function updateElement(rectangle, index, reset, numBars) {
var xScale = this.getScaleForId(this.getDataset().xAxisID);
var yScale = this.getScaleForId(this.getDataset().yAxisID);
var yScalePoint;
if (yScale.min < 0 && yScale.max < 0) {
// all less than 0. use the top
yScalePoint = yScale.getPixelForValue(yScale.max);
} else if (yScale.min > 0 && yScale.max > 0) {
yScalePoint = yScale.getPixelForValue(yScale.min);
} else {
yScalePoint = yScale.getPixelForValue(0);
}
helpers.extend(rectangle, {
// Utility
_chart: this.chart.chart,
_xScale: xScale,
_yScale: yScale,
_datasetIndex: this.index,
_index: index,
// Desired view properties
_model: {
x: this.calculateBarX(index, this.index),
y: reset ? yScalePoint : this.calculateBarY(index, this.index),
// Tooltip
label: this.chart.data.labels[index],
datasetLabel: this.getDataset().label,
// Appearance
base: this.calculateBarBase(this.index, index),
width: this.calculateBarWidth(numBars),
backgroundColor: rectangle.custom && rectangle.custom.backgroundColor ? rectangle.custom.backgroundColor : helpers.getValueAtIndexOrDefault(this.getDataset().backgroundColor, index, this.chart.options.elements.rectangle.backgroundColor),
borderColor: rectangle.custom && rectangle.custom.borderColor ? rectangle.custom.borderColor : helpers.getValueAtIndexOrDefault(this.getDataset().borderColor, index, this.chart.options.elements.rectangle.borderColor),
borderWidth: rectangle.custom && rectangle.custom.borderWidth ? rectangle.custom.borderWidth : helpers.getValueAtIndexOrDefault(this.getDataset().borderWidth, index, this.chart.options.elements.rectangle.borderWidth),
},
});
rectangle.pivot();
},
calculateBarBase: function(datasetIndex, index) {
var xScale = this.getScaleForId(this.getDataset().xAxisID);
var yScale = this.getScaleForId(this.getDataset().yAxisID);
var base = 0;
if (yScale.options.stacked) {
var value = this.chart.data.datasets[datasetIndex].data[index];
if (value < 0) {
for (var i = 0; i < datasetIndex; i++) {
var negDS = this.chart.data.datasets[i];
if (helpers.isDatasetVisible(negDS) && negDS.yAxisID === yScale.id) {
base += negDS.data[index] < 0 ? negDS.data[index] : 0;
}
}
} else {
for (var j = 0; j < datasetIndex; j++) {
var posDS = this.chart.data.datasets[j];
if (helpers.isDatasetVisible(posDS) && posDS.yAxisID === yScale.id) {
base += posDS.data[index] > 0 ? posDS.data[index] : 0;
}
}
}
return yScale.getPixelForValue(base);
}
base = yScale.getPixelForValue(yScale.min);
if (yScale.beginAtZero || ((yScale.min <= 0 && yScale.max >= 0) || (yScale.min >= 0 && yScale.max <= 0))) {
base = yScale.getPixelForValue(0, 0);
//base += yScale.options.gridLines.lineWidth;
} else if (yScale.min < 0 && yScale.max < 0) {
// All values are negative. Use the top as the base
base = yScale.getPixelForValue(yScale.max);
}
return base;
},
getRuler: function() {
var xScale = this.getScaleForId(this.getDataset().xAxisID);
var yScale = this.getScaleForId(this.getDataset().yAxisID);
var datasetCount = this.getBarCount();
var tickWidth = (function() {
var min = xScale.getPixelForTick(1) - xScale.getPixelForTick(0);
for (var i = 2; i < this.getDataset().data.length; i++) {
min = Math.min(xScale.getPixelForTick(i) - xScale.getPixelForTick(i - 1), min);
}
return min;
}).call(this);
var categoryWidth = tickWidth * xScale.options.categoryPercentage;
var categorySpacing = (tickWidth - (tickWidth * xScale.options.categoryPercentage)) / 2;
var fullBarWidth = categoryWidth / datasetCount;
var barWidth = fullBarWidth * xScale.options.barPercentage;
var barSpacing = fullBarWidth - (fullBarWidth * xScale.options.barPercentage);
return {
datasetCount: datasetCount,
tickWidth: tickWidth,
categoryWidth: categoryWidth,
categorySpacing: categorySpacing,
fullBarWidth: fullBarWidth,
barWidth: barWidth,
barSpacing: barSpacing,
};
},
calculateBarWidth: function() {
var xScale = this.getScaleForId(this.getDataset().xAxisID);
var ruler = this.getRuler();
if (xScale.options.stacked) {
return ruler.categoryWidth;
}
return ruler.barWidth;
},
// Get bar index from the given dataset index accounting for the fact that not all bars are visible
getBarIndex: function(datasetIndex) {
var barIndex = 0;
for (var j = 0; j < datasetIndex; ++j) {
if (helpers.isDatasetVisible(this.chart.data.datasets[j]) && this.chart.data.datasets[j].bar) {
++barIndex;
}
}
return barIndex;
},
calculateBarX: function(index, datasetIndex) {
var yScale = this.getScaleForId(this.getDataset().yAxisID);
var xScale = this.getScaleForId(this.getDataset().xAxisID);
var barIndex = this.getBarIndex(datasetIndex);
var ruler = this.getRuler();
var leftTick = xScale.getPixelForValue(null, index, datasetIndex, this.chart.isCombo);
leftTick -= this.chart.isCombo ? (ruler.tickWidth / 2) : 0;
if (xScale.options.stacked) {
return leftTick + (ruler.categoryWidth / 2) + ruler.categorySpacing;
}
return leftTick +
(ruler.barWidth / 2) +
ruler.categorySpacing +
(ruler.barWidth * barIndex) +
(ruler.barSpacing / 2) +
(ruler.barSpacing * barIndex);
},
calculateBarY: function(index, datasetIndex) {
var xScale = this.getScaleForId(this.getDataset().xAxisID);
var yScale = this.getScaleForId(this.getDataset().yAxisID);
var value = this.getDataset().data[index];
if (yScale.options.stacked) {
var sumPos = 0,
sumNeg = 0;
for (var i = 0; i < datasetIndex; i++) {
var ds = this.chart.data.datasets[i];
if (helpers.isDatasetVisible(ds)) {
if (ds.data[index] < 0) {
sumNeg += ds.data[index] || 0;
} else {
sumPos += ds.data[index] || 0;
}
}
}
if (value < 0) {
return yScale.getPixelForValue(sumNeg + value);
} else {
return yScale.getPixelForValue(sumPos + value);
}
return yScale.getPixelForValue(value);
}
return yScale.getPixelForValue(value);
},
draw: function(ease) {
var easingDecimal = ease || 1;
helpers.each(this.getDataset().metaData, function(rectangle, index) {
rectangle.transition(easingDecimal).draw();
}, this);
},
setHoverStyle: function(rectangle) {
var dataset = this.chart.data.datasets[rectangle._datasetIndex];
var index = rectangle._index;
rectangle._model.backgroundColor = rectangle.custom && rectangle.custom.hoverBackgroundColor ? rectangle.custom.hoverBackgroundColor : helpers.getValueAtIndexOrDefault(dataset.hoverBackgroundColor, index, helpers.color(rectangle._model.backgroundColor).saturate(0.5).darken(0.1).rgbString());
rectangle._model.borderColor = rectangle.custom && rectangle.custom.hoverBorderColor ? rectangle.custom.hoverBorderColor : helpers.getValueAtIndexOrDefault(dataset.hoverBorderColor, index, helpers.color(rectangle._model.borderColor).saturate(0.5).darken(0.1).rgbString());
rectangle._model.borderWidth = rectangle.custom && rectangle.custom.hoverBorderWidth ? rectangle.custom.hoverBorderWidth : helpers.getValueAtIndexOrDefault(dataset.hoverBorderWidth, index, rectangle._model.borderWidth);
},
removeHoverStyle: function(rectangle) {
var dataset = this.chart.data.datasets[rectangle._datasetIndex];
var index = rectangle._index;
rectangle._model.backgroundColor = rectangle.custom && rectangle.custom.backgroundColor ? rectangle.custom.backgroundColor : helpers.getValueAtIndexOrDefault(this.getDataset().backgroundColor, index, this.chart.options.elements.rectangle.backgroundColor);
rectangle._model.borderColor = rectangle.custom && rectangle.custom.borderColor ? rectangle.custom.borderColor : helpers.getValueAtIndexOrDefault(this.getDataset().borderColor, index, this.chart.options.elements.rectangle.borderColor);
rectangle._model.borderWidth = rectangle.custom && rectangle.custom.borderWidth ? rectangle.custom.borderWidth : helpers.getValueAtIndexOrDefault(this.getDataset().borderWidth, index, this.chart.options.elements.rectangle.borderWidth);
}
});
}).call(this);
(function() {
"use strict";
var root = this,
Chart = root.Chart,
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: {
template: "(<%= value.x %>, <%= value.y %>, <%= value.r %>)",
multiTemplate: "<%if (datasetLabel){%><%=datasetLabel%>: <%}%>(<%= value.x %>, <%= value.y %>, <%= value.r %>)",
},
};
Chart.controllers.bubble = Chart.DatasetController.extend({
addElements: function() {
this.getDataset().metaData = this.getDataset().metaData || [];
helpers.each(this.getDataset().data, function(value, index) {
this.getDataset().metaData[index] = this.getDataset().metaData[index] || new Chart.elements.Point({
_chart: this.chart.chart,
_datasetIndex: this.index,
_index: index,
});
}, this);
},
addElementAndReset: function(index) {
this.getDataset().metaData = this.getDataset().metaData || [];
var point = new Chart.elements.Point({
_chart: this.chart.chart,
_datasetIndex: this.index,
_index: index,
});
// Reset the point
this.updateElement(point, index, true);
// Add to the points array
this.getDataset().metaData.splice(index, 0, point);
},
update: function update(reset) {
var points = this.getDataset().metaData;
var yScale = this.getScaleForId(this.getDataset().yAxisID);
var xScale = this.getScaleForId(this.getDataset().xAxisID);
var scaleBase;
if (yScale.min < 0 && yScale.max < 0) {
scaleBase = yScale.getPixelForValue(yScale.max);
} else if (yScale.min > 0 && yScale.max > 0) {
scaleBase = yScale.getPixelForValue(yScale.min);
} else {
scaleBase = yScale.getPixelForValue(0);
}
// Update Points
helpers.each(points, function(point, index) {
this.updateElement(point, index, reset);
}, this);
},
updateElement: function(point, index, reset) {
var yScale = this.getScaleForId(this.getDataset().yAxisID);
var xScale = this.getScaleForId(this.getDataset().xAxisID);
var scaleBase;
if (yScale.min < 0 && yScale.max < 0) {
scaleBase = yScale.getPixelForValue(yScale.max);
} else if (yScale.min > 0 && yScale.max > 0) {
scaleBase = yScale.getPixelForValue(yScale.min);
} else {
scaleBase = yScale.getPixelForValue(0);
}
helpers.extend(point, {
// Utility
_chart: this.chart.chart,
_xScale: xScale,
_yScale: yScale,
_datasetIndex: this.index,
_index: index,
// Desired view properties
_model: {
x: reset ? xScale.getPixelForDecimal(0.5) : xScale.getPixelForValue(this.getDataset().data[index], index, this.index, this.chart.isCombo),
y: reset ? scaleBase : yScale.getPixelForValue(this.getDataset().data[index], index, this.index),
// Appearance
radius: reset ? 0 : point.custom && point.custom.radius ? point.custom.radius : this.getRadius(this.getDataset().data[index]),
backgroundColor: point.custom && point.custom.backgroundColor ? point.custom.backgroundColor : helpers.getValueAtIndexOrDefault(this.getDataset().backgroundColor, index, this.chart.options.elements.point.backgroundColor),
borderColor: point.custom && point.custom.borderColor ? point.custom.borderColor : helpers.getValueAtIndexOrDefault(this.getDataset().borderColor, index, this.chart.options.elements.point.borderColor),
borderWidth: point.custom && point.custom.borderWidth ? point.custom.borderWidth : helpers.getValueAtIndexOrDefault(this.getDataset().borderWidth, index, this.chart.options.elements.point.borderWidth),
// Tooltip
hitRadius: point.custom && point.custom.hitRadius ? point.custom.hitRadius : helpers.getValueAtIndexOrDefault(this.getDataset().hitRadius, index, this.chart.options.elements.point.hitRadius),
},
});
point._model.skip = point.custom && point.custom.skip ? point.custom.skip : (isNaN(point._model.x) || isNaN(point._model.y));
point.pivot();
},
getRadius: function(value) {
return value.r || this.chart.options.elements.point.radius;
},
draw: function(ease) {
var easingDecimal = ease || 1;
// Transition and Draw the Points
helpers.each(this.getDataset().metaData, function(point, index) {
point.transition(easingDecimal);
point.draw();
}, this);
},
setHoverStyle: function(point) {
// Point
var dataset = this.chart.data.datasets[point._datasetIndex];
var index = point._index;
point._model.radius = point.custom && point.custom.hoverRadius ? point.custom.hoverRadius : (helpers.getValueAtIndexOrDefault(dataset.hoverRadius, index, this.chart.options.elements.point.hoverRadius)) + this.getRadius(this.getDataset().data[point._index]);
point._model.backgroundColor = point.custom && point.custom.hoverBackgroundColor ? point.custom.hoverBackgroundColor : helpers.getValueAtIndexOrDefault(dataset.hoverBackgroundColor, index, helpers.color(point._model.backgroundColor).saturate(0.5).darken(0.1).rgbString());
point._model.borderColor = point.custom && point.custom.hoverBorderColor ? point.custom.hoverBorderColor : helpers.getValueAtIndexOrDefault(dataset.hoverBorderColor, index, helpers.color(point._model.borderColor).saturate(0.5).darken(0.1).rgbString());
point._model.borderWidth = point.custom && point.custom.hoverBorderWidth ? point.custom.hoverBorderWidth : helpers.getValueAtIndexOrDefault(dataset.hoverBorderWidth, index, point._model.borderWidth);
},
removeHoverStyle: function(point) {
var dataset = this.chart.data.datasets[point._datasetIndex];
var index = point._index;
point._model.radius = point.custom && point.custom.radius ? point.custom.radius : this.getRadius(this.getDataset().data[point._index]);
point._model.backgroundColor = point.custom && point.custom.backgroundColor ? point.custom.backgroundColor : helpers.getValueAtIndexOrDefault(this.getDataset().backgroundColor, index, this.chart.options.elements.point.backgroundColor);
point._model.borderColor = point.custom && point.custom.borderColor ? point.custom.borderColor : helpers.getValueAtIndexOrDefault(this.getDataset().borderColor, index, this.chart.options.elements.point.borderColor);
point._model.borderWidth = point.custom && point.custom.borderWidth ? point.custom.borderWidth : helpers.getValueAtIndexOrDefault(this.getDataset().borderWidth, index, this.chart.options.elements.point.borderWidth);
}
});
}).call(this);
(function() {
"use strict";
var root = this,
Chart = root.Chart,
//Cache a local reference to Chart.helpers
helpers = Chart.helpers;
Chart.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">');
if (chart.data.datasets.length) {
for (var i = 0; i < chart.data.datasets[0].data.length; ++i) {
text.push('<li><span style="background-color:' + chart.data.datasets[0].backgroundColor[i] + '">');
if (chart.data.labels[i]) {
text.push(chart.data.labels[i]);
}
text.push('</span></li>');
}
}
text.push('</ul>');
return text.join("");
},
legend: {
labels: {
generateLabels: function(data) {
return data.labels.map(function(label, i) {
return {
text: label,
fillStyle: data.datasets[0].backgroundColor[i],
hidden: isNaN(data.datasets[0].data[i]),
// Extra data used for toggling the correct item
index: i
};
});
}
},
onClick: function(e, legendItem) {
helpers.each(this.chart.data.datasets, function(dataset) {
dataset.metaHiddenData = dataset.metaHiddenData || [];
var idx = legendItem.index;
if (!isNaN(dataset.data[idx])) {
dataset.metaHiddenData[idx] = dataset.data[idx];
dataset.data[idx] = NaN;
} else if (!isNaN(dataset.metaHiddenData[idx])) {
dataset.data[idx] = dataset.metaHiddenData[idx];
}
});
this.chart.update();
}
},
//The percentage of the chart that we cut out of the middle.
cutoutPercentage: 50,
// Need to override these to give a nice default
tooltips: {
callbacks: {
title: function() { return '';},
label: function(tooltipItem, data) {
return data.labels[tooltipItem.index] + ': ' + data.datasets[tooltipItem.datasetIndex].data[tooltipItem.index];
}
}
}
};
Chart.defaults.pie = helpers.clone(Chart.defaults.doughnut);
helpers.extend(Chart.defaults.pie, {
cutoutPercentage: 0
});
Chart.controllers.doughnut = Chart.controllers.pie = Chart.DatasetController.extend({
linkScales: function() {
// no scales for doughnut
},
addElements: function() {
this.getDataset().metaData = this.getDataset().metaData || [];
helpers.each(this.getDataset().data, function(value, index) {
this.getDataset().metaData[index] = this.getDataset().metaData[index] || new Chart.elements.Arc({
_chart: this.chart.chart,
_datasetIndex: this.index,
_index: index,
});
}, this);
},
addElementAndReset: function(index, colorForNewElement) {
this.getDataset().metaData = this.getDataset().metaData || [];
var arc = new Chart.elements.Arc({
_chart: this.chart.chart,
_datasetIndex: this.index,
_index: index,
});
if (colorForNewElement && helpers.isArray(this.getDataset().backgroundColor)) {
this.getDataset().backgroundColor.splice(index, 0, colorForNewElement);
}
// Reset the point
this.updateElement(arc, index, true);
// Add to the points array
this.getDataset().metaData.splice(index, 0, arc);
},
getVisibleDatasetCount: function getVisibleDatasetCount() {
return helpers.where(this.chart.data.datasets, function(ds) { return helpers.isDatasetVisible(ds); }).length;
},
// Get index of the dataset in relation to the visible datasets. This allows determining the inner and outer radius correctly
getRingIndex: function getRingIndex(datasetIndex) {
var ringIndex = 0;
for (var j = 0; j < datasetIndex; ++j) {
if (helpers.isDatasetVisible(this.chart.data.datasets[j])) {
++ringIndex;
}
}
return ringIndex;
},
update: function update(reset) {
var minSize = Math.min(this.chart.chartArea.right - this.chart.chartArea.left, this.chart.chartArea.bottom - this.chart.chartArea.top);
this.chart.outerRadius = Math.max((minSize / 2) - this.chart.options.elements.arc.borderWidth / 2, 0);
this.chart.innerRadius = Math.max(this.chart.options.cutoutPercentage ? (this.chart.outerRadius / 100) * (this.chart.options.cutoutPercentage) : 1, 0);
this.chart.radiusLength = (this.chart.outerRadius - this.chart.innerRadius) / this.getVisibleDatasetCount();
this.getDataset().total = 0;
helpers.each(this.getDataset().data, function(value) {
if (!isNaN(value)) {
this.getDataset().total += Math.abs(value);
}
}, this);
this.outerRadius = this.chart.outerRadius - (this.chart.radiusLength * this.getRingIndex(this.index));
this.innerRadius = this.outerRadius - this.chart.radiusLength;
helpers.each(this.getDataset().metaData, function(arc, index) {
this.updateElement(arc, index, reset);
}, this);
},
updateElement: function(arc, index, reset) {
var centerX = (this.chart.chartArea.left + this.chart.chartArea.right) / 2;
var centerY = (this.chart.chartArea.top + this.chart.chartArea.bottom) / 2;
var resetModel = {
x: centerX,
y: centerY,
startAngle: Math.PI * -0.5, // use - PI / 2 instead of 3PI / 2 to make animations better. It means that we never deal with overflow during the transition function
endAngle: Math.PI * -0.5,
circumference: (this.chart.options.animation.animateRotate) ? 0 : this.calculateCircumference(this.getDataset().data[index]),
outerRadius: (this.chart.options.animation.animateScale) ? 0 : this.outerRadius,
innerRadius: (this.chart.options.animation.animateScale) ? 0 : this.innerRadius
};
helpers.extend(arc, {
// Utility
_chart: this.chart.chart,
_datasetIndex: this.index,
_index: index,
// Desired view properties
_model: reset ? resetModel : {
x: centerX,
y: centerY,
circumference: this.calculateCircumference(this.getDataset().data[index]),
outerRadius: this.outerRadius,
innerRadius: this.innerRadius,
backgroundColor: arc.custom && arc.custom.backgroundColor ? arc.custom.backgroundColor : helpers.getValueAtIndexOrDefault(this.getDataset().backgroundColor, index, this.chart.options.elements.arc.backgroundColor),
hoverBackgroundColor: arc.custom && arc.custom.hoverBackgroundColor ? arc.custom.hoverBackgroundColor : helpers.getValueAtIndexOrDefault(this.getDataset().hoverBackgroundColor, index, this.chart.options.elements.arc.hoverBackgroundColor),
borderWidth: arc.custom && arc.custom.borderWidth ? arc.custom.borderWidth : helpers.getValueAtIndexOrDefault(this.getDataset().borderWidth, index, this.chart.options.elements.arc.borderWidth),
borderColor: arc.custom && arc.custom.borderColor ? arc.custom.borderColor : helpers.getValueAtIndexOrDefault(this.getDataset().borderColor, index, this.chart.options.elements.arc.borderColor),
label: helpers.getValueAtIndexOrDefault(this.getDataset().label, index, this.chart.data.labels[index])
},
});
if (!reset) {
if (index === 0) {
arc._model.startAngle = Math.PI * -0.5; // use - PI / 2 instead of 3PI / 2 to make animations better. It means that we never deal with overflow during the transition function
} else {
arc._model.startAngle = this.getDataset().metaData[index - 1]._model.endAngle;
}
arc._model.endAngle = arc._model.startAngle + arc._model.circumference;
//Check to see if it's the last arc, if not get the next and update its start angle
if (index < this.getDataset().data.length - 1) {
this.getDataset().metaData[index + 1]._model.startAngle = arc._model.endAngle;
}
}
arc.pivot();
},
draw: function(ease) {
var easingDecimal = ease || 1;
helpers.each(this.getDataset().metaData, function(arc, index) {
arc.transition(easingDecimal).draw();
}, this);
},
setHoverStyle: function(arc) {
var dataset = this.chart.data.datasets[arc._datasetIndex];
var index = arc._index;
arc._model.backgroundColor = arc.custom && arc.custom.hoverBackgroundColor ? arc.custom.hoverBackgroundColor : helpers.getValueAtIndexOrDefault(dataset.hoverBackgroundColor, index, helpers.color(arc._model.backgroundColor).saturate(0.5).darken(0.1).rgbString());
arc._model.borderColor = arc.custom && arc.custom.hoverBorderColor ? arc.custom.hoverBorderColor : helpers.getValueAtIndexOrDefault(dataset.hoverBorderColor, index, helpers.color(arc._model.borderColor).saturate(0.5).darken(0.1).rgbString());
arc._model.borderWidth = arc.custom && arc.custom.hoverBorderWidth ? arc.custom.hoverBorderWidth : helpers.getValueAtIndexOrDefault(dataset.hoverBorderWidth, index, arc._model.borderWidth);
},
removeHoverStyle: function(arc) {
var dataset = this.chart.data.datasets[arc._datasetIndex];
var index = arc._index;
arc._model.backgroundColor = arc.custom && arc.custom.backgroundColor ? arc.custom.backgroundColor : helpers.getValueAtIndexOrDefault(this.getDataset().backgroundColor, index, this.chart.options.elements.arc.backgroundColor);
arc._model.borderColor = arc.custom && arc.custom.borderColor ? arc.custom.borderColor : helpers.getValueAtIndexOrDefault(this.getDataset().borderColor, index, this.chart.options.elements.arc.borderColor);
arc._model.borderWidth = arc.custom && arc.custom.borderWidth ? arc.custom.borderWidth : helpers.getValueAtIndexOrDefault(this.getDataset().borderWidth, index, this.chart.options.elements.arc.borderWidth);
},
calculateCircumference: function(value) {
if (this.getDataset().total > 0 && !isNaN(value)) {
return (Math.PI * 1.999999) * (value / this.getDataset().total);
} else {
return 0;
}
},
});
}).call(this);
(function() {
"use strict";
var root = this,
Chart = root.Chart,
helpers = Chart.helpers;
Chart.defaults.line = {
hover: {
mode: "label"
},
scales: {
xAxes: [{
type: "category",
id: 'x-axis-0'
}],
yAxes: [{
type: "linear",
id: 'y-axis-0'
}],
},
};
Chart.controllers.line = Chart.DatasetController.extend({
addElements: function() {
this.getDataset().metaData = this.getDataset().metaData || [];
this.getDataset().metaDataset = this.getDataset().metaDataset || new Chart.elements.Line({
_chart: this.chart.chart,
_datasetIndex: this.index,
_points: this.getDataset().metaData,
});
helpers.each(this.getDataset().data, function(value, index) {
this.getDataset().metaData[index] = this.getDataset().metaData[index] || new Chart.elements.Point({
_chart: this.chart.chart,
_datasetIndex: this.index,
_index: index,
});
}, this);
},
addElementAndReset: function(index) {
this.getDataset().metaData = this.getDataset().metaData || [];
var point = new Chart.elements.Point({
_chart: this.chart.chart,
_datasetIndex: this.index,
_index: index,
});
// Reset the point
this.updateElement(point, index, true);
// Add to the points array
this.getDataset().metaData.splice(index, 0, point);
// Make sure bezier control points are updated
this.updateBezierControlPoints();
},
update: function update(reset) {
var line = this.getDataset().metaDataset;
var points = this.getDataset().metaData;
var yScale = this.getScaleForId(this.getDataset().yAxisID);
var xScale = this.getScaleForId(this.getDataset().xAxisID);
var scaleBase;
if (yScale.min < 0 && yScale.max < 0) {
scaleBase = yScale.getPixelForValue(yScale.max);
} else if (yScale.min > 0 && yScale.max > 0) {
scaleBase = yScale.getPixelForValue(yScale.min);
} else {
scaleBase = yScale.getPixelForValue(0);
}
// Update Line
helpers.extend(line, {
// Utility
_scale: yScale,
_datasetIndex: this.index,
// Data
_children: points,
// Model
_model: {
// Appearance
tension: line.custom && line.custom.tension ? line.custom.tension : helpers.getValueOrDefault(this.getDataset().tension, this.chart.options.elements.line.tension),
backgroundColor: line.custom && line.custom.backgroundColor ? line.custom.backgroundColor : (this.getDataset().backgroundColor || this.chart.options.elements.line.backgroundColor),
borderWidth: line.custom && line.custom.borderWidth ? line.custom.borderWidth : (this.getDataset().borderWidth || this.chart.options.elements.line.borderWidth),
borderColor: line.custom && line.custom.borderColor ? line.custom.borderColor : (this.getDataset().borderColor || this.chart.options.elements.line.borderColor),
borderCapStyle: line.custom && line.custom.borderCapStyle ? line.custom.borderCapStyle : (this.getDataset().borderCapStyle || this.chart.options.elements.line.borderCapStyle),
borderDash: line.custom && line.custom.borderDash ? line.custom.borderDash : (this.getDataset().borderDash || this.chart.options.elements.line.borderDash),
borderDashOffset: line.custom && line.custom.borderDashOffset ? line.custom.borderDashOffset : (this.getDataset().borderDashOffset || this.chart.options.elements.line.borderDashOffset),
borderJoinStyle: line.custom && line.custom.borderJoinStyle ? line.custom.borderJoinStyle : (this.getDataset().borderJoinStyle || this.chart.options.elements.line.borderJoinStyle),
fill: line.custom && line.custom.fill ? line.custom.fill : (this.getDataset().fill !== undefined ? this.getDataset().fill : this.chart.options.elements.line.fill),
// Scale
scaleTop: yScale.top,
scaleBottom: yScale.bottom,
scaleZero: scaleBase,
},
});
line.pivot();
// Update Points
helpers.each(points, function(point, index) {
this.updateElement(point, index, reset);
}, this);
this.updateBezierControlPoints();
},
getPointBackgroundColor: function(point, index) {
var backgroundColor = this.chart.options.elements.point.backgroundColor;
var dataset = this.getDataset();
if (point.custom && point.custom.backgroundColor) {
backgroundColor = point.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();
if (point.custom && point.custom.borderColor) {
borderColor = point.custom.borderColor;
} else if (dataset.pointBorderColor) {
borderColor = helpers.getValueAtIndexOrDefault(this.getDataset().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();
if (point.custom && point.custom.borderWidth !== undefined) {
borderWidth = point.custom.borderWidth;
} else if (dataset.pointBorderWidth !== undefined) {
borderWidth = helpers.getValueAtIndexOrDefault(dataset.pointBorderWidth, index, borderWidth);
} else if (dataset.borderWidth !== undefined) {
borderWidth = dataset.borderWidth;
}
return borderWidth;
},
updateElement: function(point, index, reset) {
var yScale = this.getScaleForId(this.getDataset().yAxisID);
var xScale = this.getScaleForId(this.getDataset().xAxisID);
var scaleBase;
if (yScale.min < 0 && yScale.max < 0) {
scaleBase = yScale.getPixelForValue(yScale.max);
} else if (yScale.min > 0 && yScale.max > 0) {
scaleBase = yScale.getPixelForValue(yScale.min);
} else {
scaleBase = yScale.getPixelForValue(0);
}
helpers.extend(point, {
// Utility
_chart: this.chart.chart,
_xScale: xScale,
_yScale: yScale,
_datasetIndex: this.index,
_index: index,
// Desired view properties
_model: {
x: xScale.getPixelForValue(this.getDataset().data[index], index, this.index, this.chart.isCombo),
y: reset ? scaleBase : this.calculatePointY(this.getDataset().data[index], index, this.index, this.chart.isCombo),
// Appearance
tension: point.custom && point.custom.tension ? point.custom.tension : helpers.getValueOrDefault(this.getDataset().tension, this.chart.options.elements.line.tension),
radius: point.custom && point.custom.radius ? point.custom.radius : helpers.getValueAtIndexOrDefault(this.getDataset().radius, index, this.chart.options.elements.point.radius),
backgroundColor: this.getPointBackgroundColor(point, index),
borderColor: this.getPointBorderColor(point, index),
borderWidth: this.getPointBorderWidth(point, index),
// Tooltip
hitRadius: point.custom && point.custom.hitRadius ? point.custom.hitRadius : helpers.getValueAtIndexOrDefault(this.getDataset().hitRadius, index, this.chart.options.elements.point.hitRadius),
},
});
point._model.skip = point.custom && point.custom.skip ? point.custom.skip : (isNaN(point._model.x) || isNaN(point._model.y));
},
calculatePointY: function(value, index, datasetIndex, isCombo) {
var xScale = this.getScaleForId(this.getDataset().xAxisID);
var yScale = this.getScaleForId(this.getDataset().yAxisID);
if (yScale.options.stacked) {
var sumPos = 0,
sumNeg = 0;
for (var i = this.chart.data.datasets.length - 1; i > datasetIndex; i--) {
var ds = this.chart.data.datasets[i];
if (helpers.isDatasetVisible(ds)) {
if (ds.data[index] < 0) {
sumNeg += ds.data[index] || 0;
} else {
sumPos += ds.data[index] || 0;
}
}
}
if (value < 0) {
return yScale.getPixelForValue(sumNeg + value);
} else {
return yScale.getPixelForValue(sumPos + value);
}
return yScale.getPixelForValue(value);
}
return yScale.getPixelForValue(value);
},
updateBezierControlPoints: function() {
// Update bezier control points
helpers.each(this.getDataset().metaData, function(point, index) {
var controlPoints = helpers.splineCurve(
helpers.previousItem(this.getDataset().metaData, index)._model,
point._model,
helpers.nextItem(this.getDataset().metaData, index)._model,
point._model.tension
);
// Prevent the bezier going outside of the bounds of the graph
point._model.controlPointPreviousX = Math.max(Math.min(controlPoints.previous.x, this.chart.chartArea.right), this.chart.chartArea.left);
point._model.controlPointPreviousY = Math.max(Math.min(controlPoints.previous.y, this.chart.chartArea.bottom), this.chart.chartArea.top);
point._model.controlPointNextX = Math.max(Math.min(controlPoints.next.x, this.chart.chartArea.right), this.chart.chartArea.left);
point._model.controlPointNextY = Math.max(Math.min(controlPoints.next.y, this.chart.chartArea.bottom), this.chart.chartArea.top);
// Now pivot the point for animation
point.pivot();
}, this);
},
draw: function(ease) {
var easingDecimal = ease || 1;
// Transition Point Locations
helpers.each(this.getDataset().metaData, function(point, index) {
point.transition(easingDecimal);
}, this);
// Transition and Draw the line
this.getDataset().metaDataset.transition(easingDecimal).draw();
// Draw the points
helpers.each(this.getDataset().metaData, function(point) {
point.draw();
});
},
setHoverStyle: function(point) {
// Point
var dataset = this.chart.data.datasets[point._datasetIndex];
var index = point._index;
point._model.radius = point.custom && point.custom.hoverRadius ? point.custom.hoverRadius : helpers.getValueAtIndexOrDefault(dataset.pointHoverRadius, index, this.chart.options.elements.point.hoverRadius);
point._model.backgroundColor = point.custom && point.custom.hoverBackgroundColor ? point.custom.hoverBackgroundColor : helpers.getValueAtIndexOrDefault(dataset.pointHoverBackgroundColor, index, helpers.color(point._model.backgroundColor).saturate(0.5).darken(0.1).rgbString());
point._model.borderColor = point.custom && point.custom.hoverBorderColor ? point.custom.hoverBorderColor : helpers.getValueAtIndexOrDefault(dataset.pointHoverBorderColor, index, helpers.color(point._model.borderColor).saturate(0.5).darken(0.1).rgbString());
point._model.borderWidth = point.custom && point.custom.hoverBorderWidth ? point.custom.hoverBorderWidth : helpers.getValueAtIndexOrDefault(dataset.pointHoverBorderWidth, index, point._model.borderWidth);
},
removeHoverStyle: function(point) {
var dataset = this.chart.data.datasets[point._datasetIndex];
var index = point._index;
point._model.radius = point.custom && point.custom.radius ? point.custom.radius : helpers.getValueAtIndexOrDefault(this.getDataset().radius, index, this.chart.options.elements.point.radius);
point._model.backgroundColor = this.getPointBackgroundColor(point, index);
point._model.borderColor = this.getPointBorderColor(point, index);
point._model.borderWidth = this.getPointBorderWidth(point, index);
}
});
}).call(this);
(function() {
"use strict";
var root = this,
Chart = root.Chart,
//Cache a local reference to Chart.helpers
helpers = Chart.helpers;
Chart.defaults.polarArea = {
scale: {
type: "radialLinear",
lineArc: true, // so that lines are circular
},
//Boolean - Whether to animate the rotation of the chart
animateRotate: true,
animateScale: true,
aspectRatio: 1,
legendCallback: function(chart) {
var text = [];
text.push('<ul class="' + chart.id + '-legend">');
if (chart.data.datasets.length) {
for (var i = 0; i < chart.data.datasets[0].data.length; ++i) {
text.push('<li><span style="background-color:' + chart.data.datasets[0].backgroundColor[i] + '">');
if (chart.data.labels[i]) {
text.push(chart.data.labels[i]);
}
text.push('</span></li>');
}
}
text.push('</ul>');
return text.join("");
},
legend: {
labels: {
generateLabels: function(data) {
return data.labels.map(function(label, i) {
return {
text: label,
fillStyle: data.datasets[0].backgroundColor[i],
hidden: isNaN(data.datasets[0].data[i]),
// Extra data used for toggling the correct item
index: i
};
});
}
},
onClick: function(e, legendItem) {
helpers.each(this.chart.data.datasets, function(dataset) {
dataset.metaHiddenData = dataset.metaHiddenData || [];
var idx = legendItem.index;
if (!isNaN(dataset.data[idx])) {
dataset.metaHiddenData[idx] = dataset.data[idx];
dataset.data[idx] = NaN;
} else if (!isNaN(dataset.metaHiddenData[idx])) {
dataset.data[idx] = dataset.metaHiddenData[idx];
}
});
this.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({
linkScales: function() {
// no scales for doughnut
},
addElements: function() {
this.getDataset().metaData = this.getDataset().metaData || [];
helpers.each(this.getDataset().data, function(value, index) {
this.getDataset().metaData[index] = this.getDataset().metaData[index] || new Chart.elements.Arc({
_chart: this.chart.chart,
_datasetIndex: this.index,
_index: index,
});
}, this);
},
addElementAndReset: function(index) {
this.getDataset().metaData = this.getDataset().metaData || [];
var arc = new Chart.elements.Arc({
_chart: this.chart.chart,
_datasetIndex: this.index,
_index: index,
});
// Reset the point
this.updateElement(arc, index, true);
// Add to the points array
this.getDataset().metaData.splice(index, 0, arc);
},
getVisibleDatasetCount: function getVisibleDatasetCount() {
return helpers.where(this.chart.data.datasets, function(ds) { return helpers.isDatasetVisible(ds); }).length;
},
update: function update(reset) {
var minSize = Math.min(this.chart.chartArea.right - this.chart.chartArea.left, this.chart.chartArea.bottom - this.chart.chartArea.top);
this.chart.outerRadius = Math.max((minSize - this.chart.options.elements.arc.borderWidth / 2) / 2, 0);
this.chart.innerRadius = Math.max(this.chart.options.cutoutPercentage ? (this.chart.outerRadius / 100) * (this.chart.options.cutoutPercentage) : 1, 0);
this.chart.radiusLength = (this.chart.outerRadius - this.chart.innerRadius) / this.getVisibleDatasetCount();
this.getDataset().total = 0;
helpers.each(this.getDataset().data, function(value) {
this.getDataset().total += Math.abs(value);
}, this);
this.outerRadius = this.chart.outerRadius - (this.chart.radiusLength * this.index);
this.innerRadius = this.outerRadius - this.chart.radiusLength;
helpers.each(this.getDataset().metaData, function(arc, index) {
this.updateElement(arc, index, reset);
}, this);
},
updateElement: function(arc, index, reset) {
var circumference = this.calculateCircumference(this.getDataset().data[index]);
var centerX = (this.chart.chartArea.left + this.chart.chartArea.right) / 2;
var centerY = (this.chart.chartArea.top + this.chart.chartArea.bottom) / 2;
// 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 notNullIndex = 0;
for (var i = 0; i < index; ++i) {
if (!isNaN(this.getDataset().data[i])) {
++notNullIndex;
}
}
var startAngle = (-0.5 * Math.PI) + (circumference * notNullIndex);
var endAngle = startAngle + circumference;
var resetModel = {
x: centerX,
y: centerY,
innerRadius: 0,
outerRadius: this.chart.options.animateScale ? 0 : this.chart.scale.getDistanceFromCenterForValue(this.getDataset().data[index]),
startAngle: this.chart.options.animateRotate ? Math.PI * -0.5 : startAngle,
endAngle: this.chart.options.animateRotate ? Math.PI * -0.5 : endAngle,
backgroundColor: arc.custom && arc.custom.backgroundColor ? arc.custom.backgroundColor : helpers.getValueAtIndexOrDefault(this.getDataset().backgroundColor, index, this.chart.options.elements.arc.backgroundColor),
hoverBackgroundColor: arc.custom && arc.custom.hoverBackgroundColor ? arc.custom.hoverBackgroundColor : helpers.getValueAtIndexOrDefault(this.getDataset().hoverBackgroundColor, index, this.chart.options.elements.arc.hoverBackgroundColor),
borderWidth: arc.custom && arc.custom.borderWidth ? arc.custom.borderWidth : helpers.getValueAtIndexOrDefault(this.getDataset().borderWidth, index, this.chart.options.elements.arc.borderWidth),
borderColor: arc.custom && arc.custom.borderColor ? arc.custom.borderColor : helpers.getValueAtIndexOrDefault(this.getDataset().borderColor, index, this.chart.options.elements.arc.borderColor),
label: helpers.getValueAtIndexOrDefault(this.chart.data.labels, index, this.chart.data.labels[index])
};
helpers.extend(arc, {
// Utility
_chart: this.chart.chart,
_datasetIndex: this.index,
_index: index,
_scale: this.chart.scale,
// Desired view properties
_model: reset ? resetModel : {
x: centerX,
y: centerY,
innerRadius: 0,
outerRadius: this.chart.scale.getDistanceFromCenterForValue(this.getDataset().data[index]),
startAngle: startAngle,
endAngle: endAngle,
backgroundColor: arc.custom && arc.custom.backgroundColor ? arc.custom.backgroundColor : helpers.getValueAtIndexOrDefault(this.getDataset().backgroundColor, index, this.chart.options.elements.arc.backgroundColor),
hoverBackgroundColor: arc.custom && arc.custom.hoverBackgroundColor ? arc.custom.hoverBackgroundColor : helpers.getValueAtIndexOrDefault(this.getDataset().hoverBackgroundColor, index, this.chart.options.elements.arc.hoverBackgroundColor),
borderWidth: arc.custom && arc.custom.borderWidth ? arc.custom.borderWidth : helpers.getValueAtIndexOrDefault(this.getDataset().borderWidth, index, this.chart.options.elements.arc.borderWidth),
borderColor: arc.custom && arc.custom.borderColor ? arc.custom.borderColor : helpers.getValueAtIndexOrDefault(this.getDataset().borderColor, index, this.chart.options.elements.arc.borderColor),
label: helpers.getValueAtIndexOrDefault(this.chart.data.labels, index, this.chart.data.labels[index])
},
});
arc.pivot();
},
draw: function(ease) {
var easingDecimal = ease || 1;
helpers.each(this.getDataset().metaData, function(arc, index) {
arc.transition(easingDecimal).draw();
}, this);
},
setHoverStyle: function(arc) {
var dataset = this.chart.data.datasets[arc._datasetIndex];
var index = arc._index;
arc._model.backgroundColor = arc.custom && arc.custom.hoverBackgroundColor ? arc.custom.hoverBackgroundColor : helpers.getValueAtIndexOrDefault(dataset.hoverBackgroundColor, index, helpers.color(arc._model.backgroundColor).saturate(0.5).darken(0.1).rgbString());
arc._model.borderColor = arc.custom && arc.custom.hoverBorderColor ? arc.custom.hoverBorderColor : helpers.getValueAtIndexOrDefault(dataset.hoverBorderColor, index, helpers.color(arc._model.borderColor).saturate(0.5).darken(0.1).rgbString());
arc._model.borderWidth = arc.custom && arc.custom.hoverBorderWidth ? arc.custom.hoverBorderWidth : helpers.getValueAtIndexOrDefault(dataset.borderWidth, index, arc._model.borderWidth);
},
removeHoverStyle: function(arc) {
var dataset = this.chart.data.datasets[arc._datasetIndex];
var index = arc._index;
arc._model.backgroundColor = arc.custom && arc.custom.backgroundColor ? arc.custom.backgroundColor : helpers.getValueAtIndexOrDefault(this.getDataset().backgroundColor, index, this.chart.options.elements.arc.backgroundColor);
arc._model.borderColor = arc.custom && arc.custom.borderColor ? arc.custom.borderColor : helpers.getValueAtIndexOrDefault(this.getDataset().borderColor, index, this.chart.options.elements.arc.borderColor);
arc._model.borderWidth = arc.custom && arc.custom.borderWidth ? arc.custom.borderWidth : helpers.getValueAtIndexOrDefault(this.getDataset().borderWidth, index, this.chart.options.elements.arc.borderWidth);
},
calculateCircumference: function(value) {
if (isNaN(value)) {
return 0;
} else {
// Count the number of NaN values
var numNaN = helpers.where(this.getDataset().data, function(data) {
return isNaN(data);
}).length;
return (2 * Math.PI) / (this.getDataset().data.length - numNaN);
}
}
});
}).call(this);
(function() {
"use strict";
var root = this,
Chart = root.Chart,
helpers = Chart.helpers;
Chart.defaults.radar = {
scale: {
type: "radialLinear",
},
elements: {
line: {
tension: 0, // no bezier in radar
}
},
};
Chart.controllers.radar = Chart.DatasetController.extend({
linkScales: function() {
// No need. Single scale only
},
addElements: function() {
this.getDataset().metaData = this.getDataset().metaData || [];
this.getDataset().metaDataset = this.getDataset().metaDataset || new Chart.elements.Line({
_chart: this.chart.chart,
_datasetIndex: this.index,
_points: this.getDataset().metaData,
_loop: true
});
helpers.each(this.getDataset().data, function(value, index) {
this.getDataset().metaData[index] = this.getDataset().metaData[index] || new Chart.elements.Point({
_chart: this.chart.chart,
_datasetIndex: this.index,
_index: index,
_model: {
x: 0, //xScale.getPixelForValue(null, index, true),
y: 0, //this.chartArea.bottom,
},
});
}, this);
},
addElementAndReset: function(index) {
this.getDataset().metaData = this.getDataset().metaData || [];
var point = new Chart.elements.Point({
_chart: this.chart.chart,
_datasetIndex: this.index,
_index: index,
});
// Reset the point
this.updateElement(point, index, true);
// Add to the points array
this.getDataset().metaData.splice(index, 0, point);
// Make sure bezier control points are updated
this.updateBezierControlPoints();
},
update: function update(reset) {
var line = this.getDataset().metaDataset;
var points = this.getDataset().metaData;
var scale = this.chart.scale;
var scaleBase;
if (scale.min < 0 && scale.max < 0) {
scaleBase = scale.getPointPositionForValue(0, scale.max);
} else if (scale.min > 0 && scale.max > 0) {
scaleBase = scale.getPointPositionForValue(0, scale.min);
} else {
scaleBase = scale.getPointPositionForValue(0, 0);
}
helpers.extend(this.getDataset().metaDataset, {
// Utility
_datasetIndex: this.index,
// Data
_children: this.getDataset().metaData,
// Model
_model: {
// Appearance
tension: helpers.getValueOrDefault(this.getDataset().tension, this.chart.options.elements.line.tension),
backgroundColor: this.getDataset().backgroundColor || this.chart.options.elements.line.backgroundColor,
borderWidth: this.getDataset().borderWidth || this.chart.options.elements.line.borderWidth,
borderColor: this.getDataset().borderColor || this.chart.options.elements.line.borderColor,
fill: this.getDataset().fill !== undefined ? this.getDataset().fill : this.chart.options.elements.line.fill, // use the value from the this.getDataset() if it was provided. else fall back to the default
// Scale
scaleTop: scale.top,
scaleBottom: scale.bottom,
scaleZero: scaleBase,
},
});
this.getDataset().metaDataset.pivot();
// Update Points
helpers.each(points, function(point, index) {
this.updateElement(point, index, reset);
}, this);
// Update bezier control points
this.updateBezierControlPoints();
},
updateElement: function(point, index, reset) {
var pointPosition = this.chart.scale.getPointPositionForValue(index, this.getDataset().data[index]);
helpers.extend(point, {
// Utility
_datasetIndex: this.index,
_index: index,
_scale: this.chart.scale,
// Desired view properties
_model: {
x: reset ? this.chart.scale.xCenter : pointPosition.x, // value not used in dataset scale, but we want a consistent API between scales
y: reset ? this.chart.scale.yCenter : pointPosition.y,
// Appearance
tension: point.custom && point.custom.tension ? point.custom.tension : helpers.getValueOrDefault(this.getDataset().tension, this.chart.options.elements.line.tension),
radius: point.custom && point.custom.radius ? point.custom.pointRadius : helpers.getValueAtIndexOrDefault(this.getDataset().pointRadius, index, this.chart.options.elements.point.radius),
backgroundColor: point.custom && point.custom.backgroundColor ? point.custom.backgroundColor : helpers.getValueAtIndexOrDefault(this.getDataset().pointBackgroundColor, index, this.chart.options.elements.point.backgroundColor),
borderColor: point.custom && point.custom.borderColor ? point.custom.borderColor : helpers.getValueAtIndexOrDefault(this.getDataset().pointBorderColor, index, this.chart.options.elements.point.borderColor),
borderWidth: point.custom && point.custom.borderWidth ? point.custom.borderWidth : helpers.getValueAtIndexOrDefault(this.getDataset().pointBorderWidth, index, this.chart.options.elements.point.borderWidth),
// Tooltip
hitRadius: point.custom && point.custom.hitRadius ? point.custom.hitRadius : helpers.getValueAtIndexOrDefault(this.getDataset().hitRadius, index, this.chart.options.elements.point.hitRadius),
},
});
point._model.skip = point.custom && point.custom.skip ? point.custom.skip : (isNaN(point._model.x) || isNaN(point._model.y));
},
updateBezierControlPoints: function() {
helpers.each(this.getDataset().metaData, function(point, index) {
var controlPoints = helpers.splineCurve(
helpers.previousItem(this.getDataset().metaData, index, true)._model,
point._model,
helpers.nextItem(this.getDataset().metaData, index, true)._model,
point._model.tension
);
// Prevent the bezier going outside of the bounds of the graph
point._model.controlPointPreviousX = Math.max(Math.min(controlPoints.previous.x, this.chart.chartArea.right), this.chart.chartArea.left);
point._model.controlPointPreviousY = Math.max(Math.min(controlPoints.previous.y, this.chart.chartArea.bottom), this.chart.chartArea.top);
point._model.controlPointNextX = Math.max(Math.min(controlPoints.next.x, this.chart.chartArea.right), this.chart.chartArea.left);
point._model.controlPointNextY = Math.max(Math.min(controlPoints.next.y, this.chart.chartArea.bottom), this.chart.chartArea.top);
// Now pivot the point for animation
point.pivot();
}, this);
},
draw: function(ease) {
var easingDecimal = ease || 1;
// Transition Point Locations
helpers.each(this.getDataset().metaData, function(point, index) {
point.transition(easingDecimal);
}, this);
// Transition and Draw the line
this.getDataset().metaDataset.transition(easingDecimal).draw();
// Draw the points
helpers.each(this.getDataset().metaData, function(point) {
point.draw();
});
},
setHoverStyle: function(point) {
// Point
var dataset = this.chart.data.datasets[point._datasetIndex];
var index = point._index;
point._model.radius = point.custom && point.custom.radius ? point.custom.radius : helpers.getValueAtIndexOrDefault(dataset.pointHoverRadius, index, this.chart.options.elements.point.hoverRadius);
point._model.backgroundColor = point.custom && point.custom.hoverBackgroundColor ? point.custom.hoverBackgroundColor : helpers.getValueAtIndexOrDefault(dataset.pointHoverBackgroundColor, index, helpers.color(point._model.backgroundColor).saturate(0.5).darken(0.1).rgbString());
point._model.borderColor = point.custom && point.custom.hoverBorderColor ? point.custom.hoverBorderColor : helpers.getValueAtIndexOrDefault(dataset.pointHoverBorderColor, index, helpers.color(point._model.borderColor).saturate(0.5).darken(0.1).rgbString());
point._model.borderWidth = point.custom && point.custom.hoverBorderWidth ? point.custom.hoverBorderWidth : helpers.getValueAtIndexOrDefault(dataset.pointBorderWidth, index, point._model.borderWidth);
},
removeHoverStyle: function(point) {
var dataset = this.chart.data.datasets[point._datasetIndex];
var index = point._index;
point._model.radius = point.custom && point.custom.radius ? point.custom.radius : helpers.getValueAtIndexOrDefault(this.getDataset().radius, index, this.chart.options.elements.point.radius);
point._model.backgroundColor = point.custom && point.custom.backgroundColor ? point.custom.backgroundColor : helpers.getValueAtIndexOrDefault(this.getDataset().pointBackgroundColor, index, this.chart.options.elements.point.backgroundColor);
point._model.borderColor = point.custom && point.custom.borderColor ? point.custom.borderColor : helpers.getValueAtIndexOrDefault(this.getDataset().pointBorderColor, index, this.chart.options.elements.point.borderColor);
point._model.borderWidth = point.custom && point.custom.borderWidth ? point.custom.borderWidth : helpers.getValueAtIndexOrDefault(this.getDataset().pointBorderWidth, index, this.chart.options.elements.point.borderWidth);
}
});
}).call(this);
(function() {
"use strict";
var root = this,
Chart = root.Chart,
helpers = Chart.helpers;
// Default config for a category scale
var defaultConfig = {
position: "bottom",
};
var DatasetScale = Chart.Scale.extend({
buildTicks: function(index) {
this.ticks = this.chart.data.labels;
},
getLabelForIndex: function(index, datasetIndex) {
return this.ticks[index];
},
// Used to get data value locations. Value can either be an index or a numerical value
getPixelForValue: function(value, index, datasetIndex, includeOffset) {
if (this.isHorizontal()) {
var innerWidth = this.width - (this.paddingLeft + this.paddingRight);
var valueWidth = innerWidth / Math.max((this.chart.data.labels.length - ((this.options.gridLines.offsetGridLines) ? 0 : 1)), 1);
var widthOffset = (valueWidth * index) + this.paddingLeft;
if (this.options.gridLines.offsetGridLines && includeOffset) {
widthOffset += (valueWidth / 2);
}
return this.left + Math.round(widthOffset);
} else {
var innerHeight = this.height - (this.paddingTop + this.paddingBottom);
var valueHeight = innerHeight / Math.max((this.chart.data.labels.length - ((this.options.gridLines.offsetGridLines) ? 0 : 1)), 1);
var heightOffset = (valueHeight * index) + this.paddingTop;
if (this.options.gridLines.offsetGridLines && includeOffset) {
heightOffset += (valueHeight / 2);
}
return this.top + Math.round(heightOffset);
}
},
});
Chart.scaleService.registerScaleType("category", DatasetScale, defaultConfig);
}).call(this);
(function() {
"use strict";
var root = this,
Chart = root.Chart,
helpers = Chart.helpers;
var defaultConfig = {
position: "left",
ticks: {
callback: function(tickValue, index, ticks) {
var delta = 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;
}
}
};
var LinearScale = Chart.Scale.extend({
determineDataLimits: function() {
// First Calculate the range
this.min = null;
this.max = null;
if (this.options.stacked) {
var valuesPerType = {};
helpers.each(this.chart.data.datasets, function(dataset) {
if (valuesPerType[dataset.type] === undefined) {
valuesPerType[dataset.type] = {
positiveValues: [],
negativeValues: [],
};
}
// Store these per type
var positiveValues = valuesPerType[dataset.type].positiveValues;
var negativeValues = valuesPerType[dataset.type].negativeValues;
if (helpers.isDatasetVisible(dataset) && (this.isHorizontal() ? dataset.xAxisID === this.id : dataset.yAxisID === this.id)) {
helpers.each(dataset.data, function(rawValue, index) {
var value = +this.getRightValue(rawValue);
if (isNaN(value)) {
return;
}
positiveValues[index] = positiveValues[index] || 0;
negativeValues[index] = negativeValues[index] || 0;
if (this.options.relativePoints) {
positiveValues[index] = 100;
} else {
if (value < 0) {
negativeValues[index] += value;
} else {
positiveValues[index] += value;
}
}
}, this);
}
}, this);
helpers.each(valuesPerType, function(valuesForType) {
var values = valuesForType.positiveValues.concat(valuesForType.negativeValues);
var minVal = helpers.min(values);
var maxVal = helpers.max(values);
this.min = this.min === null ? minVal : Math.min(this.min, minVal);
this.max = this.max === null ? maxVal : Math.max(this.max, maxVal);
}, this);
} else {
helpers.each(this.chart.data.datasets, function(dataset) {
if (helpers.isDatasetVisible(dataset) && (this.isHorizontal() ? dataset.xAxisID === this.id : dataset.yAxisID === this.id)) {
helpers.each(dataset.data, function(rawValue, index) {
var value = +this.getRightValue(rawValue);
if (isNaN(value)) {
return;
}
if (this.min === null) {
this.min = value;
} else if (value < this.min) {
this.min = value;
}
if (this.max === null) {
this.max = value;
} else if (value > this.max) {
this.max = value;
}
}, this);
}
}, this);
}
// 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 (this.options.ticks.beginAtZero) {
var minSign = helpers.sign(this.min);
var maxSign = helpers.sign(this.max);
if (minSign < 0 && maxSign < 0) {
// move the top up to 0
this.max = 0;
} else if (minSign > 0 && maxSign > 0) {
// move the botttom down to 0
this.min = 0;
}
}
if (this.options.ticks.min !== undefined) {
this.min = this.options.ticks.min;
} else if (this.options.ticks.suggestedMin !== undefined) {
this.min = Math.min(this.min, this.options.ticks.suggestedMin);
}
if (this.options.ticks.max !== undefined) {
this.max = this.options.ticks.max;
} else if (this.options.ticks.suggestedMax !== undefined) {
this.max = Math.max(this.max, this.options.ticks.suggestedMax);
}
if (this.min === this.max) {
this.min--;
this.max++;
}
},
buildTicks: function() {
// Then calulate the ticks
this.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
var maxTicks;
if (this.isHorizontal()) {
maxTicks = Math.min(this.options.ticks.maxTicksLimit ? this.options.ticks.maxTicksLimit : 11,
Math.ceil(this.width / 50));
} else {
// The factor of 2 used to scale the font size has been experimentally determined.
maxTicks = Math.min(this.options.ticks.maxTicksLimit ? this.options.ticks.maxTicksLimit : 11,
Math.ceil(this.height / (2 * this.options.ticks.fontSize)));
}
// Make sure we always have at least 2 ticks
maxTicks = Math.max(2, maxTicks);
// 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 niceRange = helpers.niceNum(this.max - this.min, false);
var spacing = helpers.niceNum(niceRange / (maxTicks - 1), true);
var niceMin = Math.floor(this.min / spacing) * spacing;
var niceMax = Math.ceil(this.max / spacing) * spacing;
var numSpaces = Math.ceil((niceMax - niceMin) / spacing);
// Put the values into the ticks array
this.ticks.push(this.options.ticks.min !== undefined ? this.options.ticks.min : niceMin);
for (var j = 1; j < numSpaces; ++j) {
this.ticks.push(niceMin + (j * spacing));
}
this.ticks.push(this.options.ticks.max !== undefined ? this.options.ticks.max : niceMax);
if (this.options.position == "left" || this.options.position == "right") {
// We are in a vertical orientation. The top value is the highest. So reverse the array
this.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
this.max = helpers.max(this.ticks);
this.min = helpers.min(this.ticks);
this.ticksAsNumbers = this.ticks.slice();
if (this.options.ticks.reverse) {
this.ticks.reverse();
this.start = this.max;
this.end = this.min;
} else {
this.start = this.min;
this.end = this.max;
}
this.zeroLineIndex = this.ticks.indexOf(0);
},
getLabelForIndex: function(index, datasetIndex) {
return +this.getRightValue(this.chart.data.datasets[datasetIndex].data[index]);
},
// Utils
getPixelForValue: function(value, index, datasetIndex, includeOffset) {
// This must be called after fit has been run so that
// this.left, this.top, this.right, and this.bottom have been defined
var rightValue = +this.getRightValue(value);
var pixel;
var range = this.end - this.start;
if (this.isHorizontal()) {
var innerWidth = this.width - (this.paddingLeft + this.paddingRight);
pixel = this.left + (innerWidth / range * (rightValue - this.start));
return Math.round(pixel + this.paddingLeft);
} else {
var innerHeight = this.height - (this.paddingTop + this.paddingBottom);
pixel = (this.bottom - this.paddingBottom) - (innerHeight / range * (rightValue - this.start));
return Math.round(pixel);
}
},
getPixelForTick: function(index, includeOffset) {
return this.getPixelForValue(this.ticksAsNumbers[index], null, null, includeOffset);
},
});
Chart.scaleService.registerScaleType("linear", LinearScale, defaultConfig);
}).call(this);
(function() {
"use strict";
var root = this,
Chart = root.Chart,
helpers = Chart.helpers;
var defaultConfig = {
position: "left",
// label settings
ticks: {
callback: function(value, index, arr) {
var remain = value / (Math.pow(10, Math.floor(Chart.helpers.log10(value))));
if (remain === 1 || remain === 2 || remain === 5 || index === 0 || index === arr.length - 1) {
return value.toExponential();
} else {
return '';
}
}
}
};
var LogarithmicScale = Chart.Scale.extend({
determineDataLimits: function() {
// Calculate Range
this.min = null;
this.max = null;
if (this.options.stacked) {
var valuesPerType = {};
helpers.each(this.chart.data.datasets, function(dataset) {
if (helpers.isDatasetVisible(dataset) && (this.isHorizontal() ? dataset.xAxisID === this.id : dataset.yAxisID === this.id)) {
if (valuesPerType[dataset.type] === undefined) {
valuesPerType[dataset.type] = [];
}
helpers.each(dataset.data, function(rawValue, index) {
var values = valuesPerType[dataset.type];
var value = +this.getRightValue(rawValue);
if (isNaN(value)) {
return;
}
values[index] = values[index] || 0;
if (this.options.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;
}
}, this);
}
}, this);
helpers.each(valuesPerType, function(valuesForType) {
var minVal = helpers.min(valuesForType);
var maxVal = helpers.max(valuesForType);
this.min = this.min === null ? minVal : Math.min(this.min, minVal);
this.max = this.max === null ? maxVal : Math.max(this.max, maxVal);
}, this);
} else {
helpers.each(this.chart.data.datasets, function(dataset) {
if (helpers.isDatasetVisible(dataset) && (this.isHorizontal() ? dataset.xAxisID === this.id : dataset.yAxisID === this.id)) {
helpers.each(dataset.data, function(rawValue, index) {
var value = +this.getRightValue(rawValue);
if (isNaN(value)) {
return;
}
if (this.min === null) {
this.min = value;
} else if (value < this.min) {
this.min = value;
}
if (this.max === null) {
this.max = value;
} else if (value > this.max) {
this.max = value;
}
}, this);
}
}, this);
}
this.min = this.options.ticks.min !== undefined ? this.options.ticks.min : this.min;
this.max = this.options.ticks.max !== undefined ? this.options.ticks.max : this.max;
if (this.min === this.max) {
if (this.min !== 0 && this.min !== null) {
this.min = Math.pow(10, Math.floor(helpers.log10(this.min)) - 1);
this.max = Math.pow(10, Math.floor(helpers.log10(this.max)) + 1);
} else {
this.min = 1;
this.max = 10;
}
}
},
buildTicks: function() {
// Reset the ticks array. Later on, we will draw a grid line at these positions
// The array simply contains the numerical value of the spots where ticks will be
this.tickValues = [];
// 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 = this.options.ticks.min !== undefined ? this.options.ticks.min : Math.pow(10, Math.floor(helpers.log10(this.min)));
while (tickVal < this.max) {
this.tickValues.push(tickVal);
var exp = Math.floor(helpers.log10(tickVal));
var significand = Math.floor(tickVal / Math.pow(10, exp)) + 1;
if (significand === 10) {
significand = 1;
++exp;
}
tickVal = significand * Math.pow(10, exp);
}
var lastTick = this.options.ticks.max !== undefined ? this.options.ticks.max : tickVal;
this.tickValues.push(lastTick);
if (this.options.position == "left" || this.options.position == "right") {
// We are in a vertical orientation. The top value is the highest. So reverse the array
this.tickValues.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
this.max = helpers.max(this.tickValues);
this.min = helpers.min(this.tickValues);
if (this.options.ticks.reverse) {
this.tickValues.reverse();
this.start = this.max;
this.end = this.min;
} else {
this.start = this.min;
this.end = this.max;
}
this.ticks = this.tickValues.slice();
},
// Get the correct tooltip label
getLabelForIndex: function(index, datasetIndex) {
return +this.getRightValue(this.chart.data.datasets[datasetIndex].data[index]);
},
getPixelForTick: function(index, includeOffset) {
return this.getPixelForValue(this.tickValues[index], null, null, includeOffset);
},
getPixelForValue: function(value, index, datasetIndex, includeOffset) {
var pixel;
var newVal = +this.getRightValue(value);
var range = helpers.log10(this.end) - helpers.log10(this.start);
if (this.isHorizontal()) {
if (newVal === 0) {
pixel = this.left + this.paddingLeft;
} else {
var innerWidth = this.width - (this.paddingLeft + this.paddingRight);
pixel = this.left + (innerWidth / range * (helpers.log10(newVal) - helpers.log10(this.start)));
return pixel + this.paddingLeft;
}
} else {
// Bottom - top since pixels increase downard on a screen
if (newVal === 0) {
pixel = this.top + this.paddingTop;
} else {
var innerHeight = this.height - (this.paddingTop + this.paddingBottom);
return (this.bottom - this.paddingBottom) - (innerHeight / range * (helpers.log10(newVal) - helpers.log10(this.start)));
}
}
},
});
Chart.scaleService.registerScaleType("logarithmic", LogarithmicScale, defaultConfig);
}).call(this);
(function() {
"use strict";
var root = this,
Chart = root.Chart,
helpers = Chart.helpers;
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,
},
pointLabels: {
//String - Point label font declaration
fontFamily: "'Arial'",
//String - Point label font weight
fontStyle: "normal",
//Number - Point label font size in pixels
fontSize: 10,
//String - Point label font colour
fontColor: "#666",
},
};
var LinearRadialScale = Chart.Scale.extend({
getValueCount: function() {
return this.chart.data.labels.length;
},
setDimensions: function() {
// Set the unconstrained dimension before label rotation
this.width = this.maxWidth;
this.height = this.maxHeight;
this.xCenter = Math.round(this.width / 2);
this.yCenter = Math.round(this.height / 2);
var minSize = helpers.min([this.height, this.width]);
this.drawingArea = (this.options.display) ? (minSize / 2) - (this.options.ticks.fontSize / 2 + this.options.ticks.backdropPaddingY) : (minSize / 2);
},
determineDataLimits: function() {
this.min = null;
this.max = null;
helpers.each(this.chart.data.datasets, function(dataset) {
if (helpers.isDatasetVisible(dataset)) {
helpers.each(dataset.data, function(rawValue, index) {
var value = +this.getRightValue(rawValue);
if (isNaN(value)) {
return;
}
if (this.min === null) {
this.min = value;
} else if (value < this.min) {
this.min = value;
}
if (this.max === null) {
this.max = value;
} else if (value > this.max) {
this.max = value;
}
}, this);
}
}, this);
if (this.min === this.max) {
this.min--;
this.max++;
}
// 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 (this.options.ticks.beginAtZero) {
var minSign = helpers.sign(this.min);
var maxSign = helpers.sign(this.max);
if (minSign < 0 && maxSign < 0) {
// move the top up to 0
this.max = 0;
} else if (minSign > 0 && maxSign > 0) {
// move the botttom down to 0
this.min = 0;
}
}
},
buildTicks: function() {
this.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
var maxTicks = Math.min(this.options.ticks.maxTicksLimit ? this.options.ticks.maxTicksLimit : 11,
Math.ceil(this.drawingArea / (1.5 * this.options.ticks.fontSize)));
maxTicks = Math.max(2, maxTicks); // Make sure we always have at least 2 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 niceRange = helpers.niceNum(this.max - this.min, false);
var spacing = helpers.niceNum(niceRange / (maxTicks - 1), true);
var niceMin = Math.floor(this.min / spacing) * spacing;
var niceMax = Math.ceil(this.max / spacing) * spacing;
// Put the values into the ticks array
for (var j = niceMin; j <= niceMax; j += spacing) {
this.ticks.push(j);
}
// At this point, we need to update our max and min given the tick values since we have expanded the
// range of the scale
this.max = helpers.max(this.ticks);
this.min = helpers.min(this.ticks);
if (this.options.ticks.reverse) {
this.ticks.reverse();
this.start = this.max;
this.end = this.min;
} else {
this.start = this.min;
this.end = this.max;
}
this.zeroLineIndex = this.ticks.indexOf(0);
},
getLabelForIndex: function(index, datasetIndex) {
return +this.getRightValue(this.chart.data.datasets[datasetIndex].data[index]);
},
getCircumference: function() {
return ((Math.PI * 2) / this.getValueCount());
},
fit: function() {
/*
* 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
*/
// 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 = helpers.min([(this.height / 2 - this.options.pointLabels.fontSize - 5), this.width / 2]),
pointPosition,
i,
textWidth,
halfTextWidth,
furthestRight = this.width,
furthestRightIndex,
furthestRightAngle,
furthestLeft = 0,
furthestLeftIndex,
furthestLeftAngle,
xProtrusionLeft,
xProtrusionRight,
radiusReductionRight,
radiusReductionLeft,
maxWidthRadius;
this.ctx.font = helpers.fontString(this.options.pointLabels.fontSize, this.options.pointLabels.fontStyle, this.options.pointLabels.fontFamily);
for (i = 0; i < this.getValueCount(); i++) {
// 5px to space the text slightly out - similar to what we do in the draw function.
pointPosition = this.getPointPosition(i, largestPossibleRadius);
textWidth = this.ctx.measureText(this.options.ticks.callback(this.chart.data.labels[i])).width + 5;
if (i === 0 || i === this.getValueCount() / 2) {
// If we're at index zero, or exactly the middle, we're at exactly the top/bottom
// of the radar chart, so text will be aligned centrally, so we'll half it and compare
// w/left and right text sizes
halfTextWidth = textWidth / 2;
if (pointPosition.x + halfTextWidth > furthestRight) {
furthestRight = pointPosition.x + halfTextWidth;
furthestRightIndex = i;
}
if (pointPosition.x - halfTextWidth < furthestLeft) {
furthestLeft = pointPosition.x - halfTextWidth;
furthestLeftIndex = i;
}
} else if (i < this.getValueCount() / 2) {
// Less than half the values means we'll left align the text
if (pointPosition.x + textWidth > furthestRight) {
furthestRight = pointPosition.x + textWidth;
furthestRightIndex = i;
}
} else if (i > this.getValueCount() / 2) {
// More than half the values means we'll right align the text
if (pointPosition.x - textWidth < furthestLeft) {
furthestLeft = pointPosition.x - textWidth;
furthestLeftIndex = i;
}
}
}
xProtrusionLeft = furthestLeft;
xProtrusionRight = Math.ceil(furthestRight - this.width);
furthestRightAngle = this.getIndexAngle(furthestRightIndex);
furthestLeftAngle = this.getIndexAngle(furthestLeftIndex);
radiusReductionRight = xProtrusionRight / Math.sin(furthestRightAngle + Math.PI / 2);
radiusReductionLeft = xProtrusionLeft / Math.sin(furthestLeftAngle + Math.PI / 2);
// Ensure we actually need to reduce the size of the chart
radiusReductionRight = (helpers.isNumber(radiusReductionRight)) ? radiusReductionRight : 0;
radiusReductionLeft = (helpers.isNumber(radiusReductionLeft)) ? radiusReductionLeft : 0;
this.drawingArea = Math.round(largestPossibleRadius - (radiusReductionLeft + radiusReductionRight) / 2);
this.setCenterPoint(radiusReductionLeft, radiusReductionRight);
},
setCenterPoint: function(leftMovement, rightMovement) {
var maxRight = this.width - rightMovement - this.drawingArea,
maxLeft = leftMovement + this.drawingArea;
this.xCenter = Math.round(((maxLeft + maxRight) / 2) + this.left);
// Always vertically in the centre as the text height doesn't change
this.yCenter = Math.round((this.height / 2) + this.top);
},
getIndexAngle: function(index) {
var angleMultiplier = (Math.PI * 2) / this.getValueCount();
// Start from the top instead of right, so remove a quarter of the circle
return index * angleMultiplier - (Math.PI / 2);
},
getDistanceFromCenterForValue: function(value) {
if (value === null) {
return 0; // null always in center
}
// Take into account half font size + the yPadding of the top value
var scalingFactor = this.drawingArea / (this.max - this.min);
if (this.options.reverse) {
return (this.max - value) * scalingFactor;
} else {
return (value - this.min) * scalingFactor;
}
},
getPointPosition: function(index, distanceFromCenter) {
var thisAngle = this.getIndexAngle(index);
return {
x: Math.round(Math.cos(thisAngle) * distanceFromCenter) + this.xCenter,
y: Math.round(Math.sin(thisAngle) * distanceFromCenter) + this.yCenter
};
},
getPointPositionForValue: function(index, value) {
return this.getPointPosition(index, this.getDistanceFromCenterForValue(value));
},
draw: function() {
if (this.options.display) {
var ctx = this.ctx;
helpers.each(this.ticks, function(label, index) {
// Don't draw a centre value (if it is minimum)
if (index > 0 || this.options.reverse) {
var yCenterOffset = this.getDistanceFromCenterForValue(this.ticks[index]);
var yHeight = this.yCenter - yCenterOffset;
// Draw circular lines around the scale
if (this.options.gridLines.display) {
ctx.strokeStyle = this.options.gridLines.color;
ctx.lineWidth = this.options.gridLines.lineWidth;
if (this.options.lineArc) {
// Draw circular arcs between the points
ctx.beginPath();
ctx.arc(this.xCenter, this.yCenter, yCenterOffset, 0, Math.PI * 2);
ctx.closePath();
ctx.stroke();
} else {
// Draw straight lines connecting each index
ctx.beginPath();
for (var i = 0; i < this.getValueCount(); i++) {
var pointPosition = this.getPointPosition(i, this.getDistanceFromCenterForValue(this.ticks[index]));
if (i === 0) {
ctx.moveTo(pointPosition.x, pointPosition.y);
} else {
ctx.lineTo(pointPosition.x, pointPosition.y);
}
}
ctx.closePath();
ctx.stroke();
}
}
if (this.options.ticks.display) {
ctx.font = helpers.fontString(this.options.ticks.fontSize, this.options.ticks.fontStyle, this.options.ticks.fontFamily);
if (this.options.ticks.showLabelBackdrop) {
var labelWidth = ctx.measureText(label).width;
ctx.fillStyle = this.options.ticks.backdropColor;
ctx.fillRect(
this.xCenter - labelWidth / 2 - this.options.ticks.backdropPaddingX,
yHeight - this.options.ticks.fontSize / 2 - this.options.ticks.backdropPaddingY,
labelWidth + this.options.ticks.backdropPaddingX * 2,
this.options.ticks.fontSize + this.options.ticks.backdropPaddingY * 2
);
}
ctx.textAlign = 'center';
ctx.textBaseline = "middle";
ctx.fillStyle = this.options.ticks.fontColor;
ctx.fillText(label, this.xCenter, yHeight);
}
}
}, this);
if (!this.options.lineArc) {
ctx.lineWidth = this.options.angleLines.lineWidth;
ctx.strokeStyle = this.options.angleLines.color;
for (var i = this.getValueCount() - 1; i >= 0; i--) {
if (this.options.angleLines.display) {
var outerPosition = this.getPointPosition(i, this.getDistanceFromCenterForValue(this.options.reverse ? this.min : this.max));
ctx.beginPath();
ctx.moveTo(this.xCenter, this.yCenter);
ctx.lineTo(outerPosition.x, outerPosition.y);
ctx.stroke();
ctx.closePath();
}
// Extra 3px out for some label spacing
var pointLabelPosition = this.getPointPosition(i, this.getDistanceFromCenterForValue(this.options.reverse ? this.min : this.max) + 5);
ctx.font = helpers.fontString(this.options.pointLabels.fontSize, this.options.pointLabels.fontStyle, this.options.pointLabels.fontFamily);
ctx.fillStyle = this.options.pointLabels.fontColor;
var labelsCount = this.chart.data.labels.length,
halfLabelsCount = this.chart.data.labels.length / 2,
quarterLabelsCount = halfLabelsCount / 2,
upperHalf = (i < quarterLabelsCount || i > labelsCount - quarterLabelsCount),
exactQuarter = (i === quarterLabelsCount || i === labelsCount - quarterLabelsCount);
if (i === 0) {
ctx.textAlign = 'center';
} else if (i === halfLabelsCount) {
ctx.textAlign = 'center';
} else if (i < halfLabelsCount) {
ctx.textAlign = 'left';
} else {
ctx.textAlign = 'right';
}
// Set the correct text baseline based on outer positioning
if (exactQuarter) {
ctx.textBaseline = 'middle';
} else if (upperHalf) {
ctx.textBaseline = 'bottom';
} else {
ctx.textBaseline = 'top';
}
ctx.fillText(this.chart.data.labels[i], pointLabelPosition.x, pointLabelPosition.y);
}
}
}
}
});
Chart.scaleService.registerScaleType("radialLinear", LinearRadialScale, defaultConfig);
}).call(this);
(function(moment) {
"use strict";
if (!moment) {
console.warn('Chart.js - Moment.js could not be found! You must include it before Chart.js to use the time scale. Download at http://momentjs.com/');
return;
}
var root = this,
Chart = root.Chart,
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: {
format: false, // false == date objects or use 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
// defaults to unit's corresponding unitFormat below or override using pattern string from http://momentjs.com/docs/#/displaying/format/
displayFormats: {
'millisecond': 'SSS [ms]',
'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
},
},
};
var TimeScale = Chart.Scale.extend({
getLabelMoment: function(datasetIndex, index) {
return this.labelMoments[datasetIndex][index];
},
determineDataLimits: function() {
this.labelMoments = [];
// Only parse these once. If the dataset does not have data as x,y pairs, we will use
// these
var scaleLabelMoments = [];
if (this.chart.data.labels && this.chart.data.labels.length > 0) {
helpers.each(this.chart.data.labels, function(label, index) {
var labelMoment = this.parseTime(label);
if (this.options.time.round) {
labelMoment.startOf(this.options.time.round);
}
scaleLabelMoments.push(labelMoment);
}, this);
if (this.options.time.min) {
this.firstTick = this.parseTime(this.options.time.min);
} else {
this.firstTick = moment.min.call(this, scaleLabelMoments);
}
if (this.options.time.max) {
this.lastTick = this.parseTime(this.options.time.max);
} else {
this.lastTick = moment.max.call(this, scaleLabelMoments);
}
} else {
this.firstTick = null;
this.lastTick = null;
}
helpers.each(this.chart.data.datasets, function(dataset, datasetIndex) {
var momentsForDataset = [];
if (typeof dataset.data[0] === 'object') {
helpers.each(dataset.data, function(value, index) {
var labelMoment = this.parseTime(this.getRightValue(value));
if (this.options.time.round) {
labelMoment.startOf(this.options.time.round);
}
momentsForDataset.push(labelMoment);
// May have gone outside the scale ranges, make sure we keep the first and last ticks updated
this.firstTick = this.firstTick !== null ? moment.min(this.firstTick, labelMoment) : labelMoment;
this.lastTick = this.lastTick !== null ? moment.max(this.lastTick, labelMoment) : labelMoment;
}, this);
} else {
// We have no labels. Use the ones from the scale
momentsForDataset = scaleLabelMoments;
}
this.labelMoments.push(momentsForDataset);
}, this);
// We will modify these, so clone for later
this.firstTick = (this.firstTick || moment()).clone();
this.lastTick = (this.lastTick || moment()).clone();
},
buildTicks: function(index) {
this.ticks = [];
this.unitScale = 1; // How much we scale the unit by, ie 2 means 2x unit per step
// Set unit override if applicable
if (this.options.time.unit) {
this.tickUnit = this.options.time.unit || 'day';
this.displayFormat = this.options.time.displayFormats[this.tickUnit];
this.tickRange = Math.ceil(this.lastTick.diff(this.firstTick, this.tickUnit, true));
} else {
// Determine the smallest needed unit of the time
var innerWidth = this.width - (this.paddingLeft + this.paddingRight);
var labelCapacity = innerWidth / (this.options.ticks.fontSize + 10);
var buffer = this.options.time.round ? 0 : 2;
// Start as small as possible
this.tickUnit = 'millisecond';
this.tickRange = Math.ceil(this.lastTick.diff(this.firstTick, this.tickUnit, true) + buffer);
this.displayFormat = this.options.time.displayFormats[this.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
//var canScaleUnit = ;
this.unitScale = 1;
if (helpers.isArray(unitDefinition.steps) && Math.ceil(this.tickRange / labelCapacity) < helpers.max(unitDefinition.steps)) {
// Use one of the prefedined steps
for (var idx = 0; idx < unitDefinition.steps.length; ++idx) {
if (unitDefinition.steps[idx] > Math.ceil(this.tickRange / labelCapacity)) {
this.unitScale = unitDefinition.steps[idx];
break;
}
}
break;
} else if ((unitDefinition.maxStep === false) || (Math.ceil(this.tickRange / labelCapacity) < unitDefinition.maxStep)) {
// We have a max step. Scale this unit
this.unitScale = Math.ceil(this.tickRange / labelCapacity);
break;
} else {
// Move to the next unit up
++unitDefinitionIndex;
unitDefinition = time.units[unitDefinitionIndex];
this.tickUnit = unitDefinition.name;
this.tickRange = Math.ceil(this.lastTick.diff(this.firstTick, this.tickUnit) + buffer);
this.displayFormat = this.options.time.displayFormats[unitDefinition.name];
}
}
}
this.firstTick.startOf(this.tickUnit);
this.lastTick.endOf(this.tickUnit);
this.smallestLabelSeparation = this.width;
helpers.each(this.chart.data.datasets, function(dataset, datasetIndex) {
for (var i = 1; i < this.labelMoments[datasetIndex].length; i++) {
this.smallestLabelSeparation = Math.min(this.smallestLabelSeparation, this.labelMoments[datasetIndex][i].diff(this.labelMoments[datasetIndex][i - 1], this.tickUnit, true));
}
}, this);
// Tick displayFormat override
if (this.options.time.displayFormat) {
this.displayFormat = this.options.time.displayFormat;
}
// For every unit in between the first and last moment, create a moment and add it to the ticks tick
for (var i = 0; i <= this.tickRange; ++i) {
if (i % this.unitScale === 0) {
this.ticks.push(this.firstTick.clone().add(i, this.tickUnit));
} else if (i === this.tickRange) {
// Expand out the last one if not an exact multiple
this.tickRange = Math.ceil(this.tickRange / this.unitScale) * this.unitScale;
this.ticks.push(this.firstTick.clone().add(this.tickRange, this.tickUnit));
this.lastTick = this.ticks[this.ticks.length - 1].clone();
break;
}
}
},
// Get tooltip label
getLabelForIndex: function(index, datasetIndex) {
var label = this.chart.data.labels && index < this.chart.data.labels.length ? this.chart.data.labels[index] : '';
if (typeof this.chart.data.datasets[datasetIndex].data[0] === 'object') {
label = this.getRightValue(this.chart.data.datasets[datasetIndex].data[index]);
}
// Format nicely
if (this.options.time.tooltipFormat) {
label = this.parseTime(label).format(this.options.time.tooltipFormat);
}
return label;
},
convertTicksToLabels: function() {
this.ticks = this.ticks.map(function(tick, index, ticks) {
var formattedTick = tick.format(this.displayFormat);
if (this.options.ticks.userCallback) {
return this.options.ticks.userCallback(formattedTick, index, ticks);
} else {
return formattedTick;
}
}, this);
},
getPixelForValue: function(value, index, datasetIndex, includeOffset) {
var labelMoment = this.getLabelMoment(datasetIndex, index);
var offset = labelMoment.diff(this.firstTick, this.tickUnit, true);
var decimal = offset / this.tickRange;
if (this.isHorizontal()) {
var innerWidth = this.width - (this.paddingLeft + this.paddingRight);
var valueWidth = innerWidth / Math.max(this.ticks.length - 1, 1);
var valueOffset = (innerWidth * decimal) + this.paddingLeft;
return this.left + Math.round(valueOffset);
} else {
var innerHeight = this.height - (this.paddingTop + this.paddingBottom);
var valueHeight = innerHeight / Math.max(this.ticks.length - 1, 1);
var heightOffset = (innerHeight * decimal) + this.paddingTop;
return this.top + Math.round(heightOffset);
}
},
parseTime: function(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 this.options.time.format !== 'string' && this.options.time.format.call) {
return this.options.time.format(label);
}
// Moment format parsing
return moment(label, this.options.time.format);
},
});
Chart.scaleService.registerScaleType("time", TimeScale, defaultConfig);
}).call(this, moment);
/*!
* Chart.js
* http://chartjs.org/
* Version: 2.0.0-beta2
*
* Copyright 2015 Nick Downie
* Released under the MIT license
* https://github.com/nnnick/Chart.js/blob/master/LICENSE.md
*/
(function() {
"use strict";
var root = this,
Chart = root.Chart,
helpers = Chart.helpers;
Chart.defaults.global.elements.arc = {
backgroundColor: Chart.defaults.global.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));
} else {
return false;
}
},
inRange: function(chartX, chartY) {
var vm = this._view;
if (vm) {
var pointRelativePosition = helpers.getAngleFromPoint(vm, {
x: chartX,
y: chartY
});
// Put into the range of (-PI/2, 3PI/2]
var startAngle = vm.startAngle < (-0.5 * Math.PI) ? vm.startAngle + (2.0 * Math.PI) : vm.startAngle > (1.5 * Math.PI) ? vm.startAngle - (2.0 * Math.PI) : vm.startAngle;
var endAngle = vm.endAngle < (-0.5 * Math.PI) ? vm.endAngle + (2.0 * Math.PI) : vm.endAngle > (1.5 * Math.PI) ? vm.endAngle - (2.0 * Math.PI) : vm.endAngle;
//Check if within the range of the open/close angle
var betweenAngles = (pointRelativePosition.angle >= startAngle && pointRelativePosition.angle <= endAngle),
withinRadius = (pointRelativePosition.distance >= vm.innerRadius && pointRelativePosition.distance <= vm.outerRadius);
return (betweenAngles && withinRadius);
} else {
return false;
}
},
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;
var vm = this._view;
ctx.beginPath();
ctx.arc(vm.x, vm.y, vm.outerRadius, vm.startAngle, vm.endAngle);
ctx.arc(vm.x, vm.y, vm.innerRadius, vm.endAngle, vm.startAngle, 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();
}
}
});
}).call(this);
/*!
* Chart.js
* http://chartjs.org/
* Version: 2.0.0-beta2
*
* Copyright 2015 Nick Downie
* Released under the MIT license
* https://github.com/nnnick/Chart.js/blob/master/LICENSE.md
*/
(function() {
"use strict";
var root = this,
Chart = root.Chart,
helpers = Chart.helpers;
Chart.defaults.global.elements.line = {
tension: 0.4,
backgroundColor: Chart.defaults.global.defaultColor,
borderWidth: 3,
borderColor: Chart.defaults.global.defaultColor,
borderCapStyle: 'butt',
borderDash: [],
borderDashOffset: 0.0,
borderJoinStyle: 'miter',
fill: true, // do we fill in the area between the line and its base axis
};
Chart.elements.Line = Chart.Element.extend({
lineToNextPoint: function(previousPoint, point, nextPoint, skipHandler, previousSkipHandler) {
var ctx = this._chart.ctx;
if (point._view.skip) {
skipHandler.call(this, previousPoint, point, nextPoint);
} else if (previousPoint._view.skip) {
previousSkipHandler.call(this, previousPoint, point, nextPoint);
} else if (point._view.tension === 0) {
ctx.lineTo(point._view.x, point._view.y);
} else {
// Line between points
ctx.bezierCurveTo(
previousPoint._view.controlPointNextX,
previousPoint._view.controlPointNextY,
point._view.controlPointPreviousX,
point._view.controlPointPreviousY,
point._view.x,
point._view.y
);
}
},
draw: function() {
var _this = this;
var vm = this._view;
var ctx = this._chart.ctx;
var first = this._children[0];
var last = this._children[this._children.length - 1];
function loopBackToStart(drawLineToCenter) {
if (!first._view.skip && !last._view.skip) {
// Draw a bezier line from last to first
ctx.bezierCurveTo(
last._view.controlPointNextX,
last._view.controlPointNextY,
first._view.controlPointPreviousX,
first._view.controlPointPreviousY,
first._view.x,
first._view.y
);
} else if (drawLineToCenter) {
// Go to center
ctx.lineTo(_this._view.scaleZero.x, _this._view.scaleZero.y);
}
}
ctx.save();
// If we had points and want to fill this line, do so.
if (this._children.length > 0 && vm.fill) {
// Draw the background first (so the border is always on top)
ctx.beginPath();
helpers.each(this._children, function(point, index) {
var previous = helpers.previousItem(this._children, index);
var next = helpers.nextItem(this._children, index);
// First point moves to it's starting position no matter what
if (index === 0) {
if (this._loop) {
ctx.moveTo(vm.scaleZero.x, vm.scaleZero.y);
} else {
ctx.moveTo(point._view.x, vm.scaleZero);
}
if (point._view.skip) {
if (!this._loop) {
ctx.moveTo(next._view.x, this._view.scaleZero);
}
} else {
ctx.lineTo(point._view.x, point._view.y);
}
} else {
this.lineToNextPoint(previous, point, next, function(previousPoint, point, nextPoint) {
if (this._loop) {
// Go to center
ctx.lineTo(this._view.scaleZero.x, this._view.scaleZero.y);
} else {
ctx.lineTo(previousPoint._view.x, this._view.scaleZero);
ctx.moveTo(nextPoint._view.x, this._view.scaleZero);
}
}, function(previousPoint, point) {
// If we skipped the last point, draw a line to ourselves so that the fill is nice
ctx.lineTo(point._view.x, point._view.y);
});
}
}, this);
// For radial scales, loop back around to the first point
if (this._loop) {
loopBackToStart(true);
} else {
//Round off the line by going to the base of the chart, back to the start, then fill.
ctx.lineTo(this._children[this._children.length - 1]._view.x, vm.scaleZero);
ctx.lineTo(this._children[0]._view.x, vm.scaleZero);
}
ctx.fillStyle = vm.backgroundColor || Chart.defaults.global.defaultColor;
ctx.closePath();
ctx.fill();
}
// Now draw the line between all the points with any borders
ctx.lineCap = vm.borderCapStyle || Chart.defaults.global.elements.line.borderCapStyle;
// IE 9 and 10 do not support line dash
if (ctx.setLineDash) {
ctx.setLineDash(vm.borderDash || Chart.defaults.global.elements.line.borderDash);
}
ctx.lineDashOffset = vm.borderDashOffset || Chart.defaults.global.elements.line.borderDashOffset;
ctx.lineJoin = vm.borderJoinStyle || Chart.defaults.global.elements.line.borderJoinStyle;
ctx.lineWidth = vm.borderWidth || Chart.defaults.global.elements.line.borderWidth;
ctx.strokeStyle = vm.borderColor || Chart.defaults.global.defaultColor;
ctx.beginPath();
helpers.each(this._children, function(point, index) {
var previous = helpers.previousItem(this._children, index);
var next = helpers.nextItem(this._children, index);
if (index === 0) {
ctx.moveTo(point._view.x, point._view.y);
} else {
this.lineToNextPoint(previous, point, next, function(previousPoint, point, nextPoint) {
ctx.moveTo(nextPoint._view.x, nextPoint._view.y);
}, function(previousPoint, point) {
// If we skipped the last point, move up to our point preventing a line from being drawn
ctx.moveTo(point._view.x, point._view.y);
});
}
}, this);
if (this._loop && this._children.length > 0) {
loopBackToStart();
}
ctx.stroke();
ctx.restore();
},
});
}).call(this);
/*!
* Chart.js
* http://chartjs.org/
* Version: 2.0.0-beta2
*
* Copyright 2015 Nick Downie
* Released under the MIT license
* https://github.com/nnnick/Chart.js/blob/master/LICENSE.md
*/
(function() {
"use strict";
var root = this,
Chart = root.Chart,
helpers = Chart.helpers;
Chart.defaults.global.elements.point = {
radius: 3,
backgroundColor: Chart.defaults.global.defaultColor,
borderWidth: 1,
borderColor: Chart.defaults.global.defaultColor,
// Hover
hitRadius: 1,
hoverRadius: 4,
hoverBorderWidth: 1,
};
Chart.elements.Point = Chart.Element.extend({
inRange: function(mouseX, mouseY) {
var vm = this._view;
if (vm) {
var hoverRange = vm.hitRadius + vm.radius;
return ((Math.pow(mouseX - vm.x, 2) + Math.pow(mouseY - vm.y, 2)) < Math.pow(hoverRange, 2));
} else {
return false;
}
},
inLabelRange: function(mouseX) {
var vm = this._view;
if (vm) {
return (Math.pow(mouseX - vm.x, 2) < Math.pow(vm.radius + vm.hitRadius, 2));
} else {
return false;
}
},
tooltipPosition: function() {
var vm = this._view;
return {
x: vm.x,
y: vm.y,
padding: vm.radius + vm.borderWidth
};
},
draw: function() {
var vm = this._view;
var ctx = this._chart.ctx;
if (vm.skip) {
return;
}
if (vm.radius > 0 || vm.borderWidth > 0) {
ctx.beginPath();
ctx.arc(vm.x, vm.y, vm.radius || Chart.defaults.global.elements.point.radius, 0, Math.PI * 2);
ctx.closePath();
ctx.strokeStyle = vm.borderColor || Chart.defaults.global.defaultColor;
ctx.lineWidth = vm.borderWidth || Chart.defaults.global.elements.point.borderWidth;
ctx.fillStyle = vm.backgroundColor || Chart.defaults.global.defaultColor;
ctx.fill();
ctx.stroke();
}
}
});
}).call(this);
(function() {
"use strict";
var root = this,
Chart = root.Chart,
helpers = Chart.helpers;
Chart.defaults.global.elements.rectangle = {
backgroundColor: Chart.defaults.global.defaultColor,
borderWidth: 0,
borderColor: Chart.defaults.global.defaultColor,
};
Chart.elements.Rectangle = Chart.Element.extend({
draw: function() {
var ctx = this._chart.ctx;
var vm = this._view;
var halfWidth = vm.width / 2,
leftX = vm.x - halfWidth,
rightX = vm.x + halfWidth,
top = vm.base - (vm.base - vm.y),
halfStroke = vm.borderWidth / 2;
// 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 (vm.borderWidth) {
leftX += halfStroke;
rightX -= halfStroke;
top += halfStroke;
}
ctx.beginPath();
ctx.fillStyle = vm.backgroundColor;
ctx.strokeStyle = vm.borderColor;
ctx.lineWidth = vm.borderWidth;
// It'd be nice to keep this class totally generic to any rectangle
// and simply specify which border to miss out.
ctx.moveTo(leftX, vm.base);
ctx.lineTo(leftX, top);
ctx.lineTo(rightX, top);
ctx.lineTo(rightX, vm.base);
ctx.fill();
if (vm.borderWidth) {
ctx.stroke();
}
},
height: function() {
var vm = this._view;
return vm.base - vm.y;
},
inRange: function(mouseX, mouseY) {
var vm = this._view;
var inRange = false;
if (vm) {
if (vm.y < vm.base) {
inRange = (mouseX >= vm.x - vm.width / 2 && mouseX <= vm.x + vm.width / 2) && (mouseY >= vm.y && mouseY <= vm.base);
} else {
inRange = (mouseX >= vm.x - vm.width / 2 && mouseX <= vm.x + vm.width / 2) && (mouseY >= vm.base && mouseY <= vm.y);
}
}
return inRange;
},
inLabelRange: function(mouseX) {
var vm = this._view;
if (vm) {
return (mouseX >= vm.x - vm.width / 2 && mouseX <= vm.x + vm.width / 2);
} else {
return false;
}
},
tooltipPosition: function() {
var vm = this._view;
return {
x: vm.x,
y: vm.y
};
},
});
}).call(this);
(function() {
"use strict";
var root = this;
var Chart = root.Chart;
var helpers = Chart.helpers;
Chart.Bar = function(context, config) {
config.type = 'bar';
return new Chart(context, config);
};
}).call(this);
(function() {
"use strict";
var root = this;
var Chart = root.Chart;
var helpers = Chart.helpers;
var defaultConfig = {
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(tooltipItems, data) {
// Title doesn't make sense for scatter since we format the data as a point
return '';
},
label: function(tooltipItem, data) {
return '(' + tooltipItem.xLabel + ', ' + tooltipItem.yLabel + ')';
}
}
},
};
// Register the default config for this type
Chart.defaults.bubble = defaultConfig;
Chart.Bubble = function(context, config) {
config.type = 'bubble';
return new Chart(context, config);
};
}).call(this);
(function() {
"use strict";
var root = this;
var Chart = root.Chart;
var helpers = Chart.helpers;
Chart.Doughnut = function(context, config) {
config.type = 'doughnut';
return new Chart(context, config);
};
}).call(this);
(function() {
"use strict";
var root = this;
var Chart = root.Chart;
var helpers = Chart.helpers;
Chart.Line = function(context, config) {
config.type = 'line';
return new Chart(context, config);
};
}).call(this);
(function() {
"use strict";
var root = this;
var Chart = root.Chart;
var helpers = Chart.helpers;
Chart.PolarArea = function(context, config) {
config.type = 'polarArea';
return new Chart(context, config);
};
}).call(this);
(function() {
"use strict";
var root = this;
var Chart = root.Chart;
var helpers = Chart.helpers;
var defaultConfig = {
aspectRatio: 1,
};
Chart.Radar = function(context, config) {
config.options = helpers.configMerge(defaultConfig, config.options);
config.type = 'radar';
return new Chart(context, config);
};
}).call(this);
(function() {
"use strict";
var root = this;
var Chart = root.Chart;
var helpers = Chart.helpers;
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(tooltipItems, data) {
// Title doesn't make sense for scatter since we format the data as a point
return '';
},
label: function(tooltipItem, data) {
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);
};
}).call(this);
return Chart;
}));
Reference in a new issue Copy permalink