diff options
| author | Daniel García Moreno <danigm@soleta.eu> | 2021-06-08 12:36:55 +0200 |
|---|---|---|
| committer | Daniel García Moreno <danigm@soleta.eu> | 2021-06-08 12:36:55 +0200 |
| commit | 514fb84a565e8bc9eb550164d545fa72d77c2b38 (patch) | |
| tree | 2afdc9b7a225cd9066ca11e77bcc862986fbe65e /ogcp/static/AdminLTE/plugins/chart.js/Chart.js | |
| parent | 22dcea19ff74871b7200bfc7f976836f436c5342 (diff) | |
Add chart to dashboard
This patch adds an example chart using chartjs to the dashboard to show
the disk usage.
https://www.chartjs.org/docs/latest/getting-started/
Diffstat (limited to 'ogcp/static/AdminLTE/plugins/chart.js/Chart.js')
| -rwxr-xr-x | ogcp/static/AdminLTE/plugins/chart.js/Chart.js | 16172 |
1 files changed, 16172 insertions, 0 deletions
diff --git a/ogcp/static/AdminLTE/plugins/chart.js/Chart.js b/ogcp/static/AdminLTE/plugins/chart.js/Chart.js new file mode 100755 index 0000000..7a1a28d --- /dev/null +++ b/ogcp/static/AdminLTE/plugins/chart.js/Chart.js @@ -0,0 +1,16172 @@ +/*! + * Chart.js v2.9.4 + * https://www.chartjs.org + * (c) 2020 Chart.js Contributors + * Released under the MIT License + */ +(function (global, factory) { +typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory(function() { try { return require('moment'); } catch(e) { } }()) : +typeof define === 'function' && define.amd ? define(['require'], function(require) { return factory(function() { try { return require('moment'); } catch(e) { } }()); }) : +(global = global || self, global.Chart = factory(global.moment)); +}(this, (function (moment) { 'use strict'; + +moment = moment && moment.hasOwnProperty('default') ? moment['default'] : moment; + +function createCommonjsModule(fn, module) { + return module = { exports: {} }, fn(module, module.exports), module.exports; +} + +function getCjsExportFromNamespace (n) { + return n && n['default'] || n; +} + +var colorName = {
+ "aliceblue": [240, 248, 255],
+ "antiquewhite": [250, 235, 215],
+ "aqua": [0, 255, 255],
+ "aquamarine": [127, 255, 212],
+ "azure": [240, 255, 255],
+ "beige": [245, 245, 220],
+ "bisque": [255, 228, 196],
+ "black": [0, 0, 0],
+ "blanchedalmond": [255, 235, 205],
+ "blue": [0, 0, 255],
+ "blueviolet": [138, 43, 226],
+ "brown": [165, 42, 42],
+ "burlywood": [222, 184, 135],
+ "cadetblue": [95, 158, 160],
+ "chartreuse": [127, 255, 0],
+ "chocolate": [210, 105, 30],
+ "coral": [255, 127, 80],
+ "cornflowerblue": [100, 149, 237],
+ "cornsilk": [255, 248, 220],
+ "crimson": [220, 20, 60],
+ "cyan": [0, 255, 255],
+ "darkblue": [0, 0, 139],
+ "darkcyan": [0, 139, 139],
+ "darkgoldenrod": [184, 134, 11],
+ "darkgray": [169, 169, 169],
+ "darkgreen": [0, 100, 0],
+ "darkgrey": [169, 169, 169],
+ "darkkhaki": [189, 183, 107],
+ "darkmagenta": [139, 0, 139],
+ "darkolivegreen": [85, 107, 47],
+ "darkorange": [255, 140, 0],
+ "darkorchid": [153, 50, 204],
+ "darkred": [139, 0, 0],
+ "darksalmon": [233, 150, 122],
+ "darkseagreen": [143, 188, 143],
+ "darkslateblue": [72, 61, 139],
+ "darkslategray": [47, 79, 79],
+ "darkslategrey": [47, 79, 79],
+ "darkturquoise": [0, 206, 209],
+ "darkviolet": [148, 0, 211],
+ "deeppink": [255, 20, 147],
+ "deepskyblue": [0, 191, 255],
+ "dimgray": [105, 105, 105],
+ "dimgrey": [105, 105, 105],
+ "dodgerblue": [30, 144, 255],
+ "firebrick": [178, 34, 34],
+ "floralwhite": [255, 250, 240],
+ "forestgreen": [34, 139, 34],
+ "fuchsia": [255, 0, 255],
+ "gainsboro": [220, 220, 220],
+ "ghostwhite": [248, 248, 255],
+ "gold": [255, 215, 0],
+ "goldenrod": [218, 165, 32],
+ "gray": [128, 128, 128],
+ "green": [0, 128, 0],
+ "greenyellow": [173, 255, 47],
+ "grey": [128, 128, 128],
+ "honeydew": [240, 255, 240],
+ "hotpink": [255, 105, 180],
+ "indianred": [205, 92, 92],
+ "indigo": [75, 0, 130],
+ "ivory": [255, 255, 240],
+ "khaki": [240, 230, 140],
+ "lavender": [230, 230, 250],
+ "lavenderblush": [255, 240, 245],
+ "lawngreen": [124, 252, 0],
+ "lemonchiffon": [255, 250, 205],
+ "lightblue": [173, 216, 230],
+ "lightcoral": [240, 128, 128],
+ "lightcyan": [224, 255, 255],
+ "lightgoldenrodyellow": [250, 250, 210],
+ "lightgray": [211, 211, 211],
+ "lightgreen": [144, 238, 144],
+ "lightgrey": [211, 211, 211],
+ "lightpink": [255, 182, 193],
+ "lightsalmon": [255, 160, 122],
+ "lightseagreen": [32, 178, 170],
+ "lightskyblue": [135, 206, 250],
+ "lightslategray": [119, 136, 153],
+ "lightslategrey": [119, 136, 153],
+ "lightsteelblue": [176, 196, 222],
+ "lightyellow": [255, 255, 224],
+ "lime": [0, 255, 0],
+ "limegreen": [50, 205, 50],
+ "linen": [250, 240, 230],
+ "magenta": [255, 0, 255],
+ "maroon": [128, 0, 0],
+ "mediumaquamarine": [102, 205, 170],
+ "mediumblue": [0, 0, 205],
+ "mediumorchid": [186, 85, 211],
+ "mediumpurple": [147, 112, 219],
+ "mediumseagreen": [60, 179, 113],
+ "mediumslateblue": [123, 104, 238],
+ "mediumspringgreen": [0, 250, 154],
+ "mediumturquoise": [72, 209, 204],
+ "mediumvioletred": [199, 21, 133],
+ "midnightblue": [25, 25, 112],
+ "mintcream": [245, 255, 250],
+ "mistyrose": [255, 228, 225],
+ "moccasin": [255, 228, 181],
+ "navajowhite": [255, 222, 173],
+ "navy": [0, 0, 128],
+ "oldlace": [253, 245, 230],
+ "olive": [128, 128, 0],
+ "olivedrab": [107, 142, 35],
+ "orange": [255, 165, 0],
+ "orangered": [255, 69, 0],
+ "orchid": [218, 112, 214],
+ "palegoldenrod": [238, 232, 170],
+ "palegreen": [152, 251, 152],
+ "paleturquoise": [175, 238, 238],
+ "palevioletred": [219, 112, 147],
+ "papayawhip": [255, 239, 213],
+ "peachpuff": [255, 218, 185],
+ "peru": [205, 133, 63],
+ "pink": [255, 192, 203],
+ "plum": [221, 160, 221],
+ "powderblue": [176, 224, 230],
+ "purple": [128, 0, 128],
+ "rebeccapurple": [102, 51, 153],
+ "red": [255, 0, 0],
+ "rosybrown": [188, 143, 143],
+ "royalblue": [65, 105, 225],
+ "saddlebrown": [139, 69, 19],
+ "salmon": [250, 128, 114],
+ "sandybrown": [244, 164, 96],
+ "seagreen": [46, 139, 87],
+ "seashell": [255, 245, 238],
+ "sienna": [160, 82, 45],
+ "silver": [192, 192, 192],
+ "skyblue": [135, 206, 235],
+ "slateblue": [106, 90, 205],
+ "slategray": [112, 128, 144],
+ "slategrey": [112, 128, 144],
+ "snow": [255, 250, 250],
+ "springgreen": [0, 255, 127],
+ "steelblue": [70, 130, 180],
+ "tan": [210, 180, 140],
+ "teal": [0, 128, 128],
+ "thistle": [216, 191, 216],
+ "tomato": [255, 99, 71],
+ "turquoise": [64, 224, 208],
+ "violet": [238, 130, 238],
+ "wheat": [245, 222, 179],
+ "white": [255, 255, 255],
+ "whitesmoke": [245, 245, 245],
+ "yellow": [255, 255, 0],
+ "yellowgreen": [154, 205, 50]
+}; + +var conversions = createCommonjsModule(function (module) { +/* MIT license */ + + +// NOTE: conversions should only return primitive values (i.e. arrays, or +// values that give correct `typeof` results). +// do not use box values types (i.e. Number(), String(), etc.) + +var reverseKeywords = {}; +for (var key in colorName) { + if (colorName.hasOwnProperty(key)) { + reverseKeywords[colorName[key]] = key; + } +} + +var convert = module.exports = { + rgb: {channels: 3, labels: 'rgb'}, + hsl: {channels: 3, labels: 'hsl'}, + hsv: {channels: 3, labels: 'hsv'}, + hwb: {channels: 3, labels: 'hwb'}, + cmyk: {channels: 4, labels: 'cmyk'}, + xyz: {channels: 3, labels: 'xyz'}, + lab: {channels: 3, labels: 'lab'}, + lch: {channels: 3, labels: 'lch'}, + hex: {channels: 1, labels: ['hex']}, + keyword: {channels: 1, labels: ['keyword']}, + ansi16: {channels: 1, labels: ['ansi16']}, + ansi256: {channels: 1, labels: ['ansi256']}, + hcg: {channels: 3, labels: ['h', 'c', 'g']}, + apple: {channels: 3, labels: ['r16', 'g16', 'b16']}, + gray: {channels: 1, labels: ['gray']} +}; + +// hide .channels and .labels properties +for (var model in convert) { + if (convert.hasOwnProperty(model)) { + if (!('channels' in convert[model])) { + throw new Error('missing channels property: ' + model); + } + + if (!('labels' in convert[model])) { + throw new Error('missing channel labels property: ' + model); + } + + if (convert[model].labels.length !== convert[model].channels) { + throw new Error('channel and label counts mismatch: ' + model); + } + + var channels = convert[model].channels; + var labels = convert[model].labels; + delete convert[model].channels; + delete convert[model].labels; + Object.defineProperty(convert[model], 'channels', {value: channels}); + Object.defineProperty(convert[model], 'labels', {value: labels}); + } +} + +convert.rgb.hsl = function (rgb) { + var r = rgb[0] / 255; + var g = rgb[1] / 255; + var b = rgb[2] / 255; + var min = Math.min(r, g, b); + var max = Math.max(r, g, b); + var delta = max - min; + var h; + var s; + var l; + + if (max === min) { + h = 0; + } else if (r === max) { + h = (g - b) / delta; + } else if (g === max) { + h = 2 + (b - r) / delta; + } else if (b === max) { + h = 4 + (r - g) / delta; + } + + h = Math.min(h * 60, 360); + + if (h < 0) { + h += 360; + } + + l = (min + max) / 2; + + if (max === min) { + s = 0; + } else if (l <= 0.5) { + s = delta / (max + min); + } else { + s = delta / (2 - max - min); + } + + return [h, s * 100, l * 100]; +}; + +convert.rgb.hsv = function (rgb) { + var rdif; + var gdif; + var bdif; + var h; + var s; + + var r = rgb[0] / 255; + var g = rgb[1] / 255; + var b = rgb[2] / 255; + var v = Math.max(r, g, b); + var diff = v - Math.min(r, g, b); + var diffc = function (c) { + return (v - c) / 6 / diff + 1 / 2; + }; + + if (diff === 0) { + h = s = 0; + } else { + s = diff / v; + rdif = diffc(r); + gdif = diffc(g); + bdif = diffc(b); + + if (r === v) { + h = bdif - gdif; + } else if (g === v) { + h = (1 / 3) + rdif - bdif; + } else if (b === v) { + h = (2 / 3) + gdif - rdif; + } + if (h < 0) { + h += 1; + } else if (h > 1) { + h -= 1; + } + } + + return [ + h * 360, + s * 100, + v * 100 + ]; +}; + +convert.rgb.hwb = function (rgb) { + var r = rgb[0]; + var g = rgb[1]; + var b = rgb[2]; + var h = convert.rgb.hsl(rgb)[0]; + var w = 1 / 255 * Math.min(r, Math.min(g, b)); + + b = 1 - 1 / 255 * Math.max(r, Math.max(g, b)); + + return [h, w * 100, b * 100]; +}; + +convert.rgb.cmyk = function (rgb) { + var r = rgb[0] / 255; + var g = rgb[1] / 255; + var b = rgb[2] / 255; + var c; + var m; + var y; + var k; + + k = Math.min(1 - r, 1 - g, 1 - b); + c = (1 - r - k) / (1 - k) || 0; + m = (1 - g - k) / (1 - k) || 0; + y = (1 - b - k) / (1 - k) || 0; + + return [c * 100, m * 100, y * 100, k * 100]; +}; + +/** + * See https://en.m.wikipedia.org/wiki/Euclidean_distance#Squared_Euclidean_distance + * */ +function comparativeDistance(x, y) { + return ( + Math.pow(x[0] - y[0], 2) + + Math.pow(x[1] - y[1], 2) + + Math.pow(x[2] - y[2], 2) + ); +} + +convert.rgb.keyword = function (rgb) { + var reversed = reverseKeywords[rgb]; + if (reversed) { + return reversed; + } + + var currentClosestDistance = Infinity; + var currentClosestKeyword; + + for (var keyword in colorName) { + if (colorName.hasOwnProperty(keyword)) { + var value = colorName[keyword]; + + // Compute comparative distance + var distance = comparativeDistance(rgb, value); + + // Check if its less, if so set as closest + if (distance < currentClosestDistance) { + currentClosestDistance = distance; + currentClosestKeyword = keyword; + } + } + } + + return currentClosestKeyword; +}; + +convert.keyword.rgb = function (keyword) { + return colorName[keyword]; +}; + +convert.rgb.xyz = function (rgb) { + var r = rgb[0] / 255; + var g = rgb[1] / 255; + var b = rgb[2] / 255; + + // assume sRGB + r = r > 0.04045 ? Math.pow(((r + 0.055) / 1.055), 2.4) : (r / 12.92); + g = g > 0.04045 ? Math.pow(((g + 0.055) / 1.055), 2.4) : (g / 12.92); + b = b > 0.04045 ? Math.pow(((b + 0.055) / 1.055), 2.4) : (b / 12.92); + + var x = (r * 0.4124) + (g * 0.3576) + (b * 0.1805); + var y = (r * 0.2126) + (g * 0.7152) + (b * 0.0722); + var z = (r * 0.0193) + (g * 0.1192) + (b * 0.9505); + + return [x * 100, y * 100, z * 100]; +}; + +convert.rgb.lab = function (rgb) { + var xyz = convert.rgb.xyz(rgb); + var x = xyz[0]; + var y = xyz[1]; + var z = xyz[2]; + var l; + var a; + var b; + + x /= 95.047; + y /= 100; + z /= 108.883; + + x = x > 0.008856 ? Math.pow(x, 1 / 3) : (7.787 * x) + (16 / 116); + y = y > 0.008856 ? Math.pow(y, 1 / 3) : (7.787 * y) + (16 / 116); + z = z > 0.008856 ? Math.pow(z, 1 / 3) : (7.787 * z) + (16 / 116); + + l = (116 * y) - 16; + a = 500 * (x - y); + b = 200 * (y - z); + + return [l, a, b]; +}; + +convert.hsl.rgb = function (hsl) { + var h = hsl[0] / 360; + var s = hsl[1] / 100; + var l = hsl[2] / 100; + var t1; + var t2; + var t3; + var rgb; + var val; + + if (s === 0) { + val = l * 255; + return [val, val, val]; + } + + if (l < 0.5) { + t2 = l * (1 + s); + } else { + t2 = l + s - l * s; + } + + t1 = 2 * l - t2; + + rgb = [0, 0, 0]; + for (var i = 0; i < 3; i++) { + t3 = h + 1 / 3 * -(i - 1); + if (t3 < 0) { + t3++; + } + if (t3 > 1) { + t3--; + } + + if (6 * t3 < 1) { + val = t1 + (t2 - t1) * 6 * t3; + } else if (2 * t3 < 1) { + val = t2; + } else if (3 * t3 < 2) { + val = t1 + (t2 - t1) * (2 / 3 - t3) * 6; + } else { + val = t1; + } + + rgb[i] = val * 255; + } + + return rgb; +}; + +convert.hsl.hsv = function (hsl) { + var h = hsl[0]; + var s = hsl[1] / 100; + var l = hsl[2] / 100; + var smin = s; + var lmin = Math.max(l, 0.01); + var sv; + var v; + + l *= 2; + s *= (l <= 1) ? l : 2 - l; + smin *= lmin <= 1 ? lmin : 2 - lmin; + v = (l + s) / 2; + sv = l === 0 ? (2 * smin) / (lmin + smin) : (2 * s) / (l + s); + + return [h, sv * 100, v * 100]; +}; + +convert.hsv.rgb = function (hsv) { + var h = hsv[0] / 60; + var s = hsv[1] / 100; + var v = hsv[2] / 100; + var hi = Math.floor(h) % 6; + + var f = h - Math.floor(h); + var p = 255 * v * (1 - s); + var q = 255 * v * (1 - (s * f)); + var t = 255 * v * (1 - (s * (1 - f))); + v *= 255; + + switch (hi) { + case 0: + return [v, t, p]; + case 1: + return [q, v, p]; + case 2: + return [p, v, t]; + case 3: + return [p, q, v]; + case 4: + return [t, p, v]; + case 5: + return [v, p, q]; + } +}; + +convert.hsv.hsl = function (hsv) { + var h = hsv[0]; + var s = hsv[1] / 100; + var v = hsv[2] / 100; + var vmin = Math.max(v, 0.01); + var lmin; + var sl; + var l; + + l = (2 - s) * v; + lmin = (2 - s) * vmin; + sl = s * vmin; + sl /= (lmin <= 1) ? lmin : 2 - lmin; + sl = sl || 0; + l /= 2; + + return [h, sl * 100, l * 100]; +}; + +// http://dev.w3.org/csswg/css-color/#hwb-to-rgb +convert.hwb.rgb = function (hwb) { + var h = hwb[0] / 360; + var wh = hwb[1] / 100; + var bl = hwb[2] / 100; + var ratio = wh + bl; + var i; + var v; + var f; + var n; + + // wh + bl cant be > 1 + if (ratio > 1) { + wh /= ratio; + bl /= ratio; + } + + i = Math.floor(6 * h); + v = 1 - bl; + f = 6 * h - i; + + if ((i & 0x01) !== 0) { + f = 1 - f; + } + + n = wh + f * (v - wh); // linear interpolation + + var r; + var g; + var b; + switch (i) { + default: + case 6: + case 0: r = v; g = n; b = wh; break; + case 1: r = n; g = v; b = wh; break; + case 2: r = wh; g = v; b = n; break; + case 3: r = wh; g = n; b = v; break; + case 4: r = n; g = wh; b = v; break; + case 5: r = v; g = wh; b = n; break; + } + + return [r * 255, g * 255, b * 255]; +}; + +convert.cmyk.rgb = function (cmyk) { + var c = cmyk[0] / 100; + var m = cmyk[1] / 100; + var y = cmyk[2] / 100; + var k = cmyk[3] / 100; + var r; + var g; + var b; + + r = 1 - Math.min(1, c * (1 - k) + k); + g = 1 - Math.min(1, m * (1 - k) + k); + b = 1 - Math.min(1, y * (1 - k) + k); + + return [r * 255, g * 255, b * 255]; +}; + +convert.xyz.rgb = function (xyz) { + var x = xyz[0] / 100; + var y = xyz[1] / 100; + var z = xyz[2] / 100; + var r; + var g; + var b; + + r = (x * 3.2406) + (y * -1.5372) + (z * -0.4986); + g = (x * -0.9689) + (y * 1.8758) + (z * 0.0415); + b = (x * 0.0557) + (y * -0.2040) + (z * 1.0570); + + // assume sRGB + r = r > 0.0031308 + ? ((1.055 * Math.pow(r, 1.0 / 2.4)) - 0.055) + : r * 12.92; + + g = g > 0.0031308 + ? ((1.055 * Math.pow(g, 1.0 / 2.4)) - 0.055) + : g * 12.92; + + b = b > 0.0031308 + ? ((1.055 * Math.pow(b, 1.0 / 2.4)) - 0.055) + : b * 12.92; + + r = Math.min(Math.max(0, r), 1); + g = Math.min(Math.max(0, g), 1); + b = Math.min(Math.max(0, b), 1); + + return [r * 255, g * 255, b * 255]; +}; + +convert.xyz.lab = function (xyz) { + var x = xyz[0]; + var y = xyz[1]; + var z = xyz[2]; + var l; + var a; + var b; + + x /= 95.047; + y /= 100; + z /= 108.883; + + x = x > 0.008856 ? Math.pow(x, 1 / 3) : (7.787 * x) + (16 / 116); + y = y > 0.008856 ? Math.pow(y, 1 / 3) : (7.787 * y) + (16 / 116); + z = z > 0.008856 ? Math.pow(z, 1 / 3) : (7.787 * z) + (16 / 116); + + l = (116 * y) - 16; + a = 500 * (x - y); + b = 200 * (y - z); + + return [l, a, b]; +}; + +convert.lab.xyz = function (lab) { + var l = lab[0]; + var a = lab[1]; + var b = lab[2]; + var x; + var y; + var z; + + y = (l + 16) / 116; + x = a / 500 + y; + z = y - b / 200; + + var y2 = Math.pow(y, 3); + var x2 = Math.pow(x, 3); + var z2 = Math.pow(z, 3); + y = y2 > 0.008856 ? y2 : (y - 16 / 116) / 7.787; + x = x2 > 0.008856 ? x2 : (x - 16 / 116) / 7.787; + z = z2 > 0.008856 ? z2 : (z - 16 / 116) / 7.787; + + x *= 95.047; + y *= 100; + z *= 108.883; + + return [x, y, z]; +}; + +convert.lab.lch = function (lab) { + var l = lab[0]; + var a = lab[1]; + var b = lab[2]; + var hr; + var h; + var c; + + hr = Math.atan2(b, a); + h = hr * 360 / 2 / Math.PI; + + if (h < 0) { + h += 360; + } + + c = Math.sqrt(a * a + b * b); + + return [l, c, h]; +}; + +convert.lch.lab = function (lch) { + var l = lch[0]; + var c = lch[1]; + var h = lch[2]; + var a; + var b; + var hr; + + hr = h / 360 * 2 * Math.PI; + a = c * Math.cos(hr); + b = c * Math.sin(hr); + + return [l, a, b]; +}; + +convert.rgb.ansi16 = function (args) { + var r = args[0]; + var g = args[1]; + var b = args[2]; + var value = 1 in arguments ? arguments[1] : convert.rgb.hsv(args)[2]; // hsv -> ansi16 optimization + + value = Math.round(value / 50); + + if (value === 0) { + return 30; + } + + var ansi = 30 + + ((Math.round(b / 255) << 2) + | (Math.round(g / 255) << 1) + | Math.round(r / 255)); + + if (value === 2) { + ansi += 60; + } + + return ansi; +}; + +convert.hsv.ansi16 = function (args) { + // optimization here; we already know the value and don't need to get + // it converted for us. + return convert.rgb.ansi16(convert.hsv.rgb(args), args[2]); +}; + +convert.rgb.ansi256 = function (args) { + var r = args[0]; + var g = args[1]; + var b = args[2]; + + // we use the extended greyscale palette here, with the exception of + // black and white. normal palette only has 4 greyscale shades. + if (r === g && g === b) { + if (r < 8) { + return 16; + } + + if (r > 248) { + return 231; + } + + return Math.round(((r - 8) / 247) * 24) + 232; + } + + var ansi = 16 + + (36 * Math.round(r / 255 * 5)) + + (6 * Math.round(g / 255 * 5)) + + Math.round(b / 255 * 5); + + return ansi; +}; + +convert.ansi16.rgb = function (args) { + var color = args % 10; + + // handle greyscale + if (color === 0 || color === 7) { + if (args > 50) { + color += 3.5; + } + + color = color / 10.5 * 255; + + return [color, color, color]; + } + + var mult = (~~(args > 50) + 1) * 0.5; + var r = ((color & 1) * mult) * 255; + var g = (((color >> 1) & 1) * mult) * 255; + var b = (((color >> 2) & 1) * mult) * 255; + + return [r, g, b]; +}; + +convert.ansi256.rgb = function (args) { + // handle greyscale + if (args >= 232) { + var c = (args - 232) * 10 + 8; + return [c, c, c]; + } + + args -= 16; + + var rem; + var r = Math.floor(args / 36) / 5 * 255; + var g = Math.floor((rem = args % 36) / 6) / 5 * 255; + var b = (rem % 6) / 5 * 255; + + return [r, g, b]; +}; + +convert.rgb.hex = function (args) { + var integer = ((Math.round(args[0]) & 0xFF) << 16) + + ((Math.round(args[1]) & 0xFF) << 8) + + (Math.round(args[2]) & 0xFF); + + var string = integer.toString(16).toUpperCase(); + return '000000'.substring(string.length) + string; +}; + +convert.hex.rgb = function (args) { + var match = args.toString(16).match(/[a-f0-9]{6}|[a-f0-9]{3}/i); + if (!match) { + return [0, 0, 0]; + } + + var colorString = match[0]; + + if (match[0].length === 3) { + colorString = colorString.split('').map(function (char) { + return char + char; + }).join(''); + } + + var integer = parseInt(colorString, 16); + var r = (integer >> 16) & 0xFF; + var g = (integer >> 8) & 0xFF; + var b = integer & 0xFF; + + return [r, g, b]; +}; + +convert.rgb.hcg = function (rgb) { + var r = rgb[0] / 255; + var g = rgb[1] / 255; + var b = rgb[2] / 255; + var max = Math.max(Math.max(r, g), b); + var min = Math.min(Math.min(r, g), b); + var chroma = (max - min); + var grayscale; + var hue; + + if (chroma < 1) { + grayscale = min / (1 - chroma); + } else { + grayscale = 0; + } + + if (chroma <= 0) { + hue = 0; + } else + if (max === r) { + hue = ((g - b) / chroma) % 6; + } else + if (max === g) { + hue = 2 + (b - r) / chroma; + } else { + hue = 4 + (r - g) / chroma + 4; + } + + hue /= 6; + hue %= 1; + + return [hue * 360, chroma * 100, grayscale * 100]; +}; + +convert.hsl.hcg = function (hsl) { + var s = hsl[1] / 100; + var l = hsl[2] / 100; + var c = 1; + var f = 0; + + if (l < 0.5) { + c = 2.0 * s * l; + } else { + c = 2.0 * s * (1.0 - l); + } + + if (c < 1.0) { + f = (l - 0.5 * c) / (1.0 - c); + } + + return [hsl[0], c * 100, f * 100]; +}; + +convert.hsv.hcg = function (hsv) { + var s = hsv[1] / 100; + var v = hsv[2] / 100; + + var c = s * v; + var f = 0; + + if (c < 1.0) { + f = (v - c) / (1 - c); + } + + return [hsv[0], c * 100, f * 100]; +}; + +convert.hcg.rgb = function (hcg) { + var h = hcg[0] / 360; + var c = hcg[1] / 100; + var g = hcg[2] / 100; + + if (c === 0.0) { + return [g * 255, g * 255, g * 255]; + } + + var pure = [0, 0, 0]; + var hi = (h % 1) * 6; + var v = hi % 1; + var w = 1 - v; + var mg = 0; + + switch (Math.floor(hi)) { + case 0: + pure[0] = 1; pure[1] = v; pure[2] = 0; break; + case 1: + pure[0] = w; pure[1] = 1; pure[2] = 0; break; + case 2: + pure[0] = 0; pure[1] = 1; pure[2] = v; break; + case 3: + pure[0] = 0; pure[1] = w; pure[2] = 1; break; + case 4: + pure[0] = v; pure[1] = 0; pure[2] = 1; break; + default: + pure[0] = 1; pure[1] = 0; pure[2] = w; + } + + mg = (1.0 - c) * g; + + return [ + (c * pure[0] + mg) * 255, + (c * pure[1] + mg) * 255, + (c * pure[2] + mg) * 255 + ]; +}; + +convert.hcg.hsv = function (hcg) { + var c = hcg[1] / 100; + var g = hcg[2] / 100; + + var v = c + g * (1.0 - c); + var f = 0; + + if (v > 0.0) { + f = c / v; + } + + return [hcg[0], f * 100, v * 100]; +}; + +convert.hcg.hsl = function (hcg) { + var c = hcg[1] / 100; + var g = hcg[2] / 100; + + var l = g * (1.0 - c) + 0.5 * c; + var s = 0; + + if (l > 0.0 && l < 0.5) { + s = c / (2 * l); + } else + if (l >= 0.5 && l < 1.0) { + s = c / (2 * (1 - l)); + } + + return [hcg[0], s * 100, l * 100]; +}; + +convert.hcg.hwb = function (hcg) { + var c = hcg[1] / 100; + var g = hcg[2] / 100; + var v = c + g * (1.0 - c); + return [hcg[0], (v - c) * 100, (1 - v) * 100]; +}; + +convert.hwb.hcg = function (hwb) { + var w = hwb[1] / 100; + var b = hwb[2] / 100; + var v = 1 - b; + var c = v - w; + var g = 0; + + if (c < 1) { + g = (v - c) / (1 - c); + } + + return [hwb[0], c * 100, g * 100]; +}; + +convert.apple.rgb = function (apple) { + return [(apple[0] / 65535) * 255, (apple[1] / 65535) * 255, (apple[2] / 65535) * 255]; +}; + +convert.rgb.apple = function (rgb) { + return [(rgb[0] / 255) * 65535, (rgb[1] / 255) * 65535, (rgb[2] / 255) * 65535]; +}; + +convert.gray.rgb = function (args) { + return [args[0] / 100 * 255, args[0] / 100 * 255, args[0] / 100 * 255]; +}; + +convert.gray.hsl = convert.gray.hsv = function (args) { + return [0, 0, args[0]]; +}; + +convert.gray.hwb = function (gray) { + return [0, 100, gray[0]]; +}; + +convert.gray.cmyk = function (gray) { + return [0, 0, 0, gray[0]]; +}; + +convert.gray.lab = function (gray) { + return [gray[0], 0, 0]; +}; + +convert.gray.hex = function (gray) { + var val = Math.round(gray[0] / 100 * 255) & 0xFF; + var integer = (val << 16) + (val << 8) + val; + + var string = integer.toString(16).toUpperCase(); + return '000000'.substring(string.length) + string; +}; + +convert.rgb.gray = function (rgb) { + var val = (rgb[0] + rgb[1] + rgb[2]) / 3; + return [val / 255 * 100]; +}; +}); +var conversions_1 = conversions.rgb; +var conversions_2 = conversions.hsl; +var conversions_3 = conversions.hsv; +var conversions_4 = conversions.hwb; +var conversions_5 = conversions.cmyk; +var conversions_6 = conversions.xyz; +var conversions_7 = conversions.lab; +var conversions_8 = conversions.lch; +var conversions_9 = conversions.hex; +var conversions_10 = conversions.keyword; +var conversions_11 = conversions.ansi16; +var conversions_12 = conversions.ansi256; +var conversions_13 = conversions.hcg; +var conversions_14 = conversions.apple; +var conversions_15 = conversions.gray; + +/* + this function routes a model to all other models. + + all functions that are routed have a property `.conversion` attached + to the returned synthetic function. This property is an array + of strings, each with the steps in between the 'from' and 'to' + color models (inclusive). + + conversions that are not possible simply are not included. +*/ + +function buildGraph() { + var graph = {}; + // https://jsperf.com/object-keys-vs-for-in-with-closure/3 + var models = Object.keys(conversions); + + for (var len = models.length, i = 0; i < len; i++) { + graph[models[i]] = { + // http://jsperf.com/1-vs-infinity + // micro-opt, but this is simple. + distance: -1, + parent: null + }; + } + + return graph; +} + +// https://en.wikipedia.org/wiki/Breadth-first_search +function deriveBFS(fromModel) { + var graph = buildGraph(); + var queue = [fromModel]; // unshift -> queue -> pop + + graph[fromModel].distance = 0; + + while (queue.length) { + var current = queue.pop(); + var adjacents = Object.keys(conversions[current]); + + for (var len = adjacents.length, i = 0; i < len; i++) { + var adjacent = adjacents[i]; + var node = graph[adjacent]; + + if (node.distance === -1) { + node.distance = graph[current].distance + 1; + node.parent = current; + queue.unshift(adjacent); + } + } + } + + return graph; +} + +function link(from, to) { + return function (args) { + return to(from(args)); + }; +} + +function wrapConversion(toModel, graph) { + var path = [graph[toModel].parent, toModel]; + var fn = conversions[graph[toModel].parent][toModel]; + + var cur = graph[toModel].parent; + while (graph[cur].parent) { + path.unshift(graph[cur].parent); + fn = link(conversions[graph[cur].parent][cur], fn); + cur = graph[cur].parent; + } + + fn.conversion = path; + return fn; +} + +var route = function (fromModel) { + var graph = deriveBFS(fromModel); + var conversion = {}; + + var models = Object.keys(graph); + for (var len = models.length, i = 0; i < len; i++) { + var toModel = models[i]; + var node = graph[toModel]; + + if (node.parent === null) { + // no possible conversion, or this node is the source model. + continue; + } + + conversion[toModel] = wrapConversion(toModel, graph); + } + + return conversion; +}; + +var convert = {}; + +var models = Object.keys(conversions); + +function wrapRaw(fn) { + var wrappedFn = function (args) { + if (args === undefined || args === null) { + return args; + } + + if (arguments.length > 1) { + args = Array.prototype.slice.call(arguments); + } + + return fn(args); + }; + + // preserve .conversion property if there is one + if ('conversion' in fn) { + wrappedFn.conversion = fn.conversion; + } + + return wrappedFn; +} + +function wrapRounded(fn) { + var wrappedFn = function (args) { + if (args === undefined || args === null) { + return args; + } + + if (arguments.length > 1) { + args = Array.prototype.slice.call(arguments); + } + + var result = fn(args); + + // we're assuming the result is an array here. + // see notice in conversions.js; don't use box types + // in conversion functions. + if (typeof result === 'object') { + for (var len = result.length, i = 0; i < len; i++) { + result[i] = Math.round(result[i]); + } + } + + return result; + }; + + // preserve .conversion property if there is one + if ('conversion' in fn) { + wrappedFn.conversion = fn.conversion; + } + + return wrappedFn; +} + +models.forEach(function (fromModel) { + convert[fromModel] = {}; + + Object.defineProperty(convert[fromModel], 'channels', {value: conversions[fromModel].channels}); + Object.defineProperty(convert[fromModel], 'labels', {value: conversions[fromModel].labels}); + + var routes = route(fromModel); + var routeModels = Object.keys(routes); + + routeModels.forEach(function (toModel) { + var fn = routes[toModel]; + + convert[fromModel][toModel] = wrapRounded(fn); + convert[fromModel][toModel].raw = wrapRaw(fn); + }); +}); + +var colorConvert = convert; + +var colorName$1 = {
+ "aliceblue": [240, 248, 255],
+ "antiquewhite": [250, 235, 215],
+ "aqua": [0, 255, 255],
+ "aquamarine": [127, 255, 212],
+ "azure": [240, 255, 255],
+ "beige": [245, 245, 220],
+ "bisque": [255, 228, 196],
+ "black": [0, 0, 0],
+ "blanchedalmond": [255, 235, 205],
+ "blue": [0, 0, 255],
+ "blueviolet": [138, 43, 226],
+ "brown": [165, 42, 42],
+ "burlywood": [222, 184, 135],
+ "cadetblue": [95, 158, 160],
+ "chartreuse": [127, 255, 0],
+ "chocolate": [210, 105, 30],
+ "coral": [255, 127, 80],
+ "cornflowerblue": [100, 149, 237],
+ "cornsilk": [255, 248, 220],
+ "crimson": [220, 20, 60],
+ "cyan": [0, 255, 255],
+ "darkblue": [0, 0, 139],
+ "darkcyan": [0, 139, 139],
+ "darkgoldenrod": [184, 134, 11],
+ "darkgray": [169, 169, 169],
+ "darkgreen": [0, 100, 0],
+ "darkgrey": [169, 169, 169],
+ "darkkhaki": [189, 183, 107],
+ "darkmagenta": [139, 0, 139],
+ "darkolivegreen": [85, 107, 47],
+ "darkorange": [255, 140, 0],
+ "darkorchid": [153, 50, 204],
+ "darkred": [139, 0, 0],
+ "darksalmon": [233, 150, 122],
+ "darkseagreen": [143, 188, 143],
+ "darkslateblue": [72, 61, 139],
+ "darkslategray": [47, 79, 79],
+ "darkslategrey": [47, 79, 79],
+ "darkturquoise": [0, 206, 209],
+ "darkviolet": [148, 0, 211],
+ "deeppink": [255, 20, 147],
+ "deepskyblue": [0, 191, 255],
+ "dimgray": [105, 105, 105],
+ "dimgrey": [105, 105, 105],
+ "dodgerblue": [30, 144, 255],
+ "firebrick": [178, 34, 34],
+ "floralwhite": [255, 250, 240],
+ "forestgreen": [34, 139, 34],
+ "fuchsia": [255, 0, 255],
+ "gainsboro": [220, 220, 220],
+ "ghostwhite": [248, 248, 255],
+ "gold": [255, 215, 0],
+ "goldenrod": [218, 165, 32],
+ "gray": [128, 128, 128],
+ "green": [0, 128, 0],
+ "greenyellow": [173, 255, 47],
+ "grey": [128, 128, 128],
+ "honeydew": [240, 255, 240],
+ "hotpink": [255, 105, 180],
+ "indianred": [205, 92, 92],
+ "indigo": [75, 0, 130],
+ "ivory": [255, 255, 240],
+ "khaki": [240, 230, 140],
+ "lavender": [230, 230, 250],
+ "lavenderblush": [255, 240, 245],
+ "lawngreen": [124, 252, 0],
+ "lemonchiffon": [255, 250, 205],
+ "lightblue": [173, 216, 230],
+ "lightcoral": [240, 128, 128],
+ "lightcyan": [224, 255, 255],
+ "lightgoldenrodyellow": [250, 250, 210],
+ "lightgray": [211, 211, 211],
+ "lightgreen": [144, 238, 144],
+ "lightgrey": [211, 211, 211],
+ "lightpink": [255, 182, 193],
+ "lightsalmon": [255, 160, 122],
+ "lightseagreen": [32, 178, 170],
+ "lightskyblue": [135, 206, 250],
+ "lightslategray": [119, 136, 153],
+ "lightslategrey": [119, 136, 153],
+ "lightsteelblue": [176, 196, 222],
+ "lightyellow": [255, 255, 224],
+ "lime": [0, 255, 0],
+ "limegreen": [50, 205, 50],
+ "linen": [250, 240, 230],
+ "magenta": [255, 0, 255],
+ "maroon": [128, 0, 0],
+ "mediumaquamarine": [102, 205, 170],
+ "mediumblue": [0, 0, 205],
+ "mediumorchid": [186, 85, 211],
+ "mediumpurple": [147, 112, 219],
+ "mediumseagreen": [60, 179, 113],
+ "mediumslateblue": [123, 104, 238],
+ "mediumspringgreen": [0, 250, 154],
+ "mediumturquoise": [72, 209, 204],
+ "mediumvioletred": [199, 21, 133],
+ "midnightblue": [25, 25, 112],
+ "mintcream": [245, 255, 250],
+ "mistyrose": [255, 228, 225],
+ "moccasin": [255, 228, 181],
+ "navajowhite": [255, 222, 173],
+ "navy": [0, 0, 128],
+ "oldlace": [253, 245, 230],
+ "olive": [128, 128, 0],
+ "olivedrab": [107, 142, 35],
+ "orange": [255, 165, 0],
+ "orangered": [255, 69, 0],
+ "orchid": [218, 112, 214],
+ "palegoldenrod": [238, 232, 170],
+ "palegreen": [152, 251, 152],
+ "paleturquoise": [175, 238, 238],
+ "palevioletred": [219, 112, 147],
+ "papayawhip": [255, 239, 213],
+ "peachpuff": [255, 218, 185],
+ "peru": [205, 133, 63],
+ "pink": [255, 192, 203],
+ "plum": [221, 160, 221],
+ "powderblue": [176, 224, 230],
+ "purple": [128, 0, 128],
+ "rebeccapurple": [102, 51, 153],
+ "red": [255, 0, 0],
+ "rosybrown": [188, 143, 143],
+ "royalblue": [65, 105, 225],
+ "saddlebrown": [139, 69, 19],
+ "salmon": [250, 128, 114],
+ "sandybrown": [244, 164, 96],
+ "seagreen": [46, 139, 87],
+ "seashell": [255, 245, 238],
+ "sienna": [160, 82, 45],
+ "silver": [192, 192, 192],
+ "skyblue": [135, 206, 235],
+ "slateblue": [106, 90, 205],
+ "slategray": [112, 128, 144],
+ "slategrey": [112, 128, 144],
+ "snow": [255, 250, 250],
+ "springgreen": [0, 255, 127],
+ "steelblue": [70, 130, 180],
+ "tan": [210, 180, 140],
+ "teal": [0, 128, 128],
+ "thistle": [216, 191, 216],
+ "tomato": [255, 99, 71],
+ "turquoise": [64, 224, 208],
+ "violet": [238, 130, 238],
+ "wheat": [245, 222, 179],
+ "white": [255, 255, 255],
+ "whitesmoke": [245, 245, 245],
+ "yellow": [255, 255, 0],
+ "yellowgreen": [154, 205, 50]
+}; + +/* MIT license */ + + +var colorString = { + getRgba: getRgba, + getHsla: getHsla, + getRgb: getRgb, + getHsl: getHsl, + getHwb: getHwb, + getAlpha: getAlpha, + + hexString: hexString, + rgbString: rgbString, + rgbaString: rgbaString, + percentString: percentString, + percentaString: percentaString, + hslString: hslString, + hslaString: hslaString, + hwbString: hwbString, + keyword: keyword +}; + +function getRgba(string) { + if (!string) { + return; + } + var abbr = /^#([a-fA-F0-9]{3,4})$/i, + hex = /^#([a-fA-F0-9]{6}([a-fA-F0-9]{2})?)$/i, + rgba = /^rgba?\(\s*([+-]?\d+)\s*,\s*([+-]?\d+)\s*,\s*([+-]?\d+)\s*(?:,\s*([+-]?[\d\.]+)\s*)?\)$/i, + per = /^rgba?\(\s*([+-]?[\d\.]+)\%\s*,\s*([+-]?[\d\.]+)\%\s*,\s*([+-]?[\d\.]+)\%\s*(?:,\s*([+-]?[\d\.]+)\s*)?\)$/i, + keyword = /(\w+)/; + + var rgb = [0, 0, 0], + a = 1, + match = string.match(abbr), + hexAlpha = ""; + if (match) { + match = match[1]; + hexAlpha = match[3]; + for (var i = 0; i < rgb.length; i++) { + rgb[i] = parseInt(match[i] + match[i], 16); + } + if (hexAlpha) { + a = Math.round((parseInt(hexAlpha + hexAlpha, 16) / 255) * 100) / 100; + } + } + else if (match = string.match(hex)) { + hexAlpha = match[2]; + match = match[1]; + for (var i = 0; i < rgb.length; i++) { + rgb[i] = parseInt(match.slice(i * 2, i * 2 + 2), 16); + } + if (hexAlpha) { + a = Math.round((parseInt(hexAlpha, 16) / 255) * 100) / 100; + } + } + else if (match = string.match(rgba)) { + for (var i = 0; i < rgb.length; i++) { + rgb[i] = parseInt(match[i + 1]); + } + a = parseFloat(match[4]); + } + else if (match = string.match(per)) { + for (var i = 0; i < rgb.length; i++) { + rgb[i] = Math.round(parseFloat(match[i + 1]) * 2.55); + } + a = parseFloat(match[4]); + } + else if (match = string.match(keyword)) { + if (match[1] == "transparent") { + return [0, 0, 0, 0]; + } + rgb = colorName$1[match[1]]; + if (!rgb) { + return; + } + } + + for (var i = 0; i < rgb.length; i++) { + rgb[i] = scale(rgb[i], 0, 255); + } + if (!a && a != 0) { + a = 1; + } + else { + a = scale(a, 0, 1); + } + rgb[3] = a; + return rgb; +} + +function getHsla(string) { + if (!string) { + return; + } + var hsl = /^hsla?\(\s*([+-]?\d+)(?:deg)?\s*,\s*([+-]?[\d\.]+)%\s*,\s*([+-]?[\d\.]+)%\s*(?:,\s*([+-]?[\d\.]+)\s*)?\)/; + var match = string.match(hsl); + if (match) { + var alpha = parseFloat(match[4]); + var h = scale(parseInt(match[1]), 0, 360), + s = scale(parseFloat(match[2]), 0, 100), + l = scale(parseFloat(match[3]), 0, 100), + a = scale(isNaN(alpha) ? 1 : alpha, 0, 1); + return [h, s, l, a]; + } +} + +function getHwb(string) { + if (!string) { + return; + } + var hwb = /^hwb\(\s*([+-]?\d+)(?:deg)?\s*,\s*([+-]?[\d\.]+)%\s*,\s*([+-]?[\d\.]+)%\s*(?:,\s*([+-]?[\d\.]+)\s*)?\)/; + var match = string.match(hwb); + if (match) { + var alpha = parseFloat(match[4]); + var h = scale(parseInt(match[1]), 0, 360), + w = scale(parseFloat(match[2]), 0, 100), + b = scale(parseFloat(match[3]), 0, 100), + a = scale(isNaN(alpha) ? 1 : alpha, 0, 1); + return [h, w, b, a]; + } +} + +function getRgb(string) { + var rgba = getRgba(string); + return rgba && rgba.slice(0, 3); +} + +function getHsl(string) { + var hsla = getHsla(string); + return hsla && hsla.slice(0, 3); +} + +function getAlpha(string) { + var vals = getRgba(string); + if (vals) { + return vals[3]; + } + else if (vals = getHsla(string)) { + return vals[3]; + } + else if (vals = getHwb(string)) { + return vals[3]; + } +} + +// generators +function hexString(rgba, a) { + var a = (a !== undefined && rgba.length === 3) ? a : rgba[3]; + return "#" + hexDouble(rgba[0]) + + hexDouble(rgba[1]) + + hexDouble(rgba[2]) + + ( + (a >= 0 && a < 1) + ? hexDouble(Math.round(a * 255)) + : "" + ); +} + +function rgbString(rgba, alpha) { + if (alpha < 1 || (rgba[3] && rgba[3] < 1)) { + return rgbaString(rgba, alpha); + } + return "rgb(" + rgba[0] + ", " + rgba[1] + ", " + rgba[2] + ")"; +} + +function rgbaString(rgba, alpha) { + if (alpha === undefined) { + alpha = (rgba[3] !== undefined ? rgba[3] : 1); + } + return "rgba(" + rgba[0] + ", " + rgba[1] + ", " + rgba[2] + + ", " + alpha + ")"; +} + +function percentString(rgba, alpha) { + if (alpha < 1 || (rgba[3] && rgba[3] < 1)) { + return percentaString(rgba, alpha); + } + var r = Math.round(rgba[0]/255 * 100), + g = Math.round(rgba[1]/255 * 100), + b = Math.round(rgba[2]/255 * 100); + + return "rgb(" + r + "%, " + g + "%, " + b + "%)"; +} + +function percentaString(rgba, alpha) { + var r = Math.round(rgba[0]/255 * 100), + g = Math.round(rgba[1]/255 * 100), + b = Math.round(rgba[2]/255 * 100); + return "rgba(" + r + "%, " + g + "%, " + b + "%, " + (alpha || rgba[3] || 1) + ")"; +} + +function hslString(hsla, alpha) { + if (alpha < 1 || (hsla[3] && hsla[3] < 1)) { + return hslaString(hsla, alpha); + } + return "hsl(" + hsla[0] + ", " + hsla[1] + "%, " + hsla[2] + "%)"; +} + +function hslaString(hsla, alpha) { + if (alpha === undefined) { + alpha = (hsla[3] !== undefined ? hsla[3] : 1); + } + return "hsla(" + hsla[0] + ", " + hsla[1] + "%, " + hsla[2] + "%, " + + alpha + ")"; +} + +// hwb is a bit different than rgb(a) & hsl(a) since there is no alpha specific syntax +// (hwb have alpha optional & 1 is default value) +function hwbString(hwb, alpha) { + if (alpha === undefined) { + alpha = (hwb[3] !== undefined ? hwb[3] : 1); + } + return "hwb(" + hwb[0] + ", " + hwb[1] + "%, " + hwb[2] + "%" + + (alpha !== undefined && alpha !== 1 ? ", " + alpha : "") + ")"; +} + +function keyword(rgb) { + return reverseNames[rgb.slice(0, 3)]; +} + +// helpers +function scale(num, min, max) { + return Math.min(Math.max(min, num), max); +} + +function hexDouble(num) { + var str = num.toString(16).toUpperCase(); + return (str.length < 2) ? "0" + str : str; +} + + +//create a list of reverse color names +var reverseNames = {}; +for (var name in colorName$1) { + reverseNames[colorName$1[name]] = name; +} + +/* MIT license */ + + + +var Color = function (obj) { + if (obj instanceof Color) { + return obj; + } + if (!(this instanceof Color)) { + return new Color(obj); + } + + this.valid = false; + this.values = { + rgb: [0, 0, 0], + hsl: [0, 0, 0], + hsv: [0, 0, 0], + hwb: [0, 0, 0], + cmyk: [0, 0, 0, 0], + alpha: 1 + }; + + // parse Color() argument + var vals; + if (typeof obj === 'string') { + vals = colorString.getRgba(obj); + if (vals) { + this.setValues('rgb', vals); + } else if (vals = colorString.getHsla(obj)) { + this.setValues('hsl', vals); + } else if (vals = colorString.getHwb(obj)) { + this.setValues('hwb', vals); + } + } else if (typeof obj === 'object') { + vals = obj; + if (vals.r !== undefined || vals.red !== undefined) { + this.setValues('rgb', vals); + } else if (vals.l !== undefined || vals.lightness !== undefined) { + this.setValues('hsl', vals); + } else if (vals.v !== undefined || vals.value !== undefined) { + this.setValues('hsv', vals); + } else if (vals.w !== undefined || vals.whiteness !== undefined) { + this.setValues('hwb', vals); + } else if (vals.c !== undefined || vals.cyan !== undefined) { + this.setValues('cmyk', vals); + } + } +}; + +Color.prototype = { + isValid: function () { + return this.valid; + }, + rgb: function () { + return this.setSpace('rgb', arguments); + }, + hsl: function () { + return this.setSpace('hsl', arguments); + }, + hsv: function () { + return this.setSpace('hsv', arguments); + }, + hwb: function () { + return this.setSpace('hwb', arguments); + }, + cmyk: function () { + return this.setSpace('cmyk', arguments); + }, + + rgbArray: function () { + return this.values.rgb; + }, + hslArray: function () { + return this.values.hsl; + }, + hsvArray: function () { + return this.values.hsv; + }, + hwbArray: function () { + var values = this.values; + if (values.alpha !== 1) { + return values.hwb.concat([values.alpha]); + } + return values.hwb; + }, + cmykArray: function () { + return this.values.cmyk; + }, + rgbaArray: function () { + var values = this.values; + return values.rgb.concat([values.alpha]); + }, + hslaArray: function () { + var values = this.values; + return values.hsl.concat([values.alpha]); + }, + alpha: function (val) { + if (val === undefined) { + return this.values.alpha; + } + this.setValues('alpha', val); + return this; + }, + + red: function (val) { + return this.setChannel('rgb', 0, val); + }, + green: function (val) { + return this.setChannel('rgb', 1, val); + }, + blue: function (val) { + return this.setChannel('rgb', 2, val); + }, + hue: function (val) { + if (val) { + val %= 360; + val = val < 0 ? 360 + val : val; + } + return this.setChannel('hsl', 0, val); + }, + saturation: function (val) { + return this.setChannel('hsl', 1, val); + }, + lightness: function (val) { + return this.setChannel('hsl', 2, val); + }, + saturationv: function (val) { + return this.setChannel('hsv', 1, val); + }, + whiteness: function (val) { + return this.setChannel('hwb', 1, val); + }, + blackness: function (val) { + return this.setChannel('hwb', 2, val); + }, + value: function (val) { + return this.setChannel('hsv', 2, val); + }, + cyan: function (val) { + return this.setChannel('cmyk', 0, val); + }, + magenta: function (val) { + return this.setChannel('cmyk', 1, val); + }, + yellow: function (val) { + return this.setChannel('cmyk', 2, val); + }, + black: function (val) { + return this.setChannel('cmyk', 3, val); + }, + + hexString: function () { + return colorString.hexString(this.values.rgb); + }, + rgbString: function () { + return colorString.rgbString(this.values.rgb, this.values.alpha); + }, + rgbaString: function () { + return colorString.rgbaString(this.values.rgb, this.values.alpha); + }, + percentString: function () { + return colorString.percentString(this.values.rgb, this.values.alpha); + }, + hslString: function () { + return colorString.hslString(this.values.hsl, this.values.alpha); + }, + hslaString: function () { + return colorString.hslaString(this.values.hsl, this.values.alpha); + }, + hwbString: function () { + return colorString.hwbString(this.values.hwb, this.values.alpha); + }, + keyword: function () { + return colorString.keyword(this.values.rgb, this.values.alpha); + }, + + rgbNumber: function () { + var rgb = this.values.rgb; + return (rgb[0] << 16) | (rgb[1] << 8) | rgb[2]; + }, + + luminosity: function () { + // http://www.w3.org/TR/WCAG20/#relativeluminancedef + var rgb = this.values.rgb; + var lum = []; + for (var i = 0; i < rgb.length; i++) { + var chan = rgb[i] / 255; + lum[i] = (chan <= 0.03928) ? chan / 12.92 : Math.pow(((chan + 0.055) / 1.055), 2.4); + } + return 0.2126 * lum[0] + 0.7152 * lum[1] + 0.0722 * lum[2]; + }, + + contrast: function (color2) { + // http://www.w3.org/TR/WCAG20/#contrast-ratiodef + var lum1 = this.luminosity(); + var lum2 = color2.luminosity(); + if (lum1 > lum2) { + return (lum1 + 0.05) / (lum2 + 0.05); + } + return (lum2 + 0.05) / (lum1 + 0.05); + }, + + level: function (color2) { + var contrastRatio = this.contrast(color2); + if (contrastRatio >= 7.1) { + return 'AAA'; + } + + return (contrastRatio >= 4.5) ? 'AA' : ''; + }, + + dark: function () { + // YIQ equation from http://24ways.org/2010/calculating-color-contrast + var rgb = this.values.rgb; + var yiq = (rgb[0] * 299 + rgb[1] * 587 + rgb[2] * 114) / 1000; + return yiq < 128; + }, + + light: function () { + return !this.dark(); + }, + + negate: function () { + var rgb = []; + for (var i = 0; i < 3; i++) { + rgb[i] = 255 - this.values.rgb[i]; + } + this.setValues('rgb', rgb); + return this; + }, + + lighten: function (ratio) { + var hsl = this.values.hsl; + hsl[2] += hsl[2] * ratio; + this.setValues('hsl', hsl); + return this; + }, + + darken: function (ratio) { + var hsl = this.values.hsl; + hsl[2] -= hsl[2] * ratio; + this.setValues('hsl', hsl); + return this; + }, + + saturate: function (ratio) { + var hsl = this.values.hsl; + hsl[1] += hsl[1] * ratio; + this.setValues('hsl', hsl); + return this; + }, + + desaturate: function (ratio) { + var hsl = this.values.hsl; + hsl[1] -= hsl[1] * ratio; + this.setValues('hsl', hsl); + return this; + }, + + whiten: function (ratio) { + var hwb = this.values.hwb; + hwb[1] += hwb[1] * ratio; + this.setValues('hwb', hwb); + return this; + }, + + blacken: function (ratio) { + var hwb = this.values.hwb; + hwb[2] += hwb[2] * ratio; + this.setValues('hwb', hwb); + return this; + }, + + greyscale: function () { + var rgb = this.values.rgb; + // http://en.wikipedia.org/wiki/Grayscale#Converting_color_to_grayscale + var val = rgb[0] * 0.3 + rgb[1] * 0.59 + rgb[2] * 0.11; + this.setValues('rgb', [val, val, val]); + return this; + }, + + clearer: function (ratio) { + var alpha = this.values.alpha; + this.setValues('alpha', alpha - (alpha * ratio)); + return this; + }, + + opaquer: function (ratio) { + var alpha = this.values.alpha; + this.setValues('alpha', alpha + (alpha * ratio)); + return this; + }, + + rotate: function (degrees) { + var hsl = this.values.hsl; + var hue = (hsl[0] + degrees) % 360; + hsl[0] = hue < 0 ? 360 + hue : hue; + this.setValues('hsl', hsl); + return this; + }, + + /** + * Ported from sass implementation in C + * https://github.com/sass/libsass/blob/0e6b4a2850092356aa3ece07c6b249f0221caced/functions.cpp#L209 + */ + mix: function (mixinColor, weight) { + var color1 = this; + var color2 = mixinColor; + var p = weight === undefined ? 0.5 : weight; + + var w = 2 * p - 1; + var a = color1.alpha() - color2.alpha(); + + var w1 = (((w * a === -1) ? w : (w + a) / (1 + w * a)) + 1) / 2.0; + var w2 = 1 - w1; + + return this + .rgb( + w1 * color1.red() + w2 * color2.red(), + w1 * color1.green() + w2 * color2.green(), + w1 * color1.blue() + w2 * color2.blue() + ) + .alpha(color1.alpha() * p + color2.alpha() * (1 - p)); + }, + + toJSON: function () { + return this.rgb(); + }, + + clone: function () { + // NOTE(SB): using node-clone creates a dependency to Buffer when using browserify, + // making the final build way to big to embed in Chart.js. So let's do it manually, + // assuming that values to clone are 1 dimension arrays containing only numbers, + // except 'alpha' which is a number. + var result = new Color(); + var source = this.values; + var target = result.values; + var value, type; + + for (var prop in source) { + if (source.hasOwnProperty(prop)) { + value = source[prop]; + type = ({}).toString.call(value); + if (type === '[object Array]') { + target[prop] = value.slice(0); + } else if (type === '[object Number]') { + target[prop] = value; + } else { + console.error('unexpected color value:', value); + } + } + } + + return result; + } +}; + +Color.prototype.spaces = { + rgb: ['red', 'green', 'blue'], + hsl: ['hue', 'saturation', 'lightness'], + hsv: ['hue', 'saturation', 'value'], + hwb: ['hue', 'whiteness', 'blackness'], + cmyk: ['cyan', 'magenta', 'yellow', 'black'] +}; + +Color.prototype.maxes = { + rgb: [255, 255, 255], + hsl: [360, 100, 100], + hsv: [360, 100, 100], + hwb: [360, 100, 100], + cmyk: [100, 100, 100, 100] +}; + +Color.prototype.getValues = function (space) { + var values = this.values; + var vals = {}; + + for (var i = 0; i < space.length; i++) { + vals[space.charAt(i)] = values[space][i]; + } + + if (values.alpha !== 1) { + vals.a = values.alpha; + } + + // {r: 255, g: 255, b: 255, a: 0.4} + return vals; +}; + +Color.prototype.setValues = function (space, vals) { + var values = this.values; + var spaces = this.spaces; + var maxes = this.maxes; + var alpha = 1; + var i; + + this.valid = true; + + if (space === 'alpha') { + alpha = vals; + } else if (vals.length) { + // [10, 10, 10] + values[space] = vals.slice(0, space.length); + alpha = vals[space.length]; + } else if (vals[space.charAt(0)] !== undefined) { + // {r: 10, g: 10, b: 10} + for (i = 0; i < space.length; i++) { + values[space][i] = vals[space.charAt(i)]; + } + + alpha = vals.a; + } else if (vals[spaces[space][0]] !== undefined) { + // {red: 10, green: 10, blue: 10} + var chans = spaces[space]; + + for (i = 0; i < space.length; i++) { + values[space][i] = vals[chans[i]]; + } + + alpha = vals.alpha; + } + + values.alpha = Math.max(0, Math.min(1, (alpha === undefined ? values.alpha : alpha))); + + if (space === 'alpha') { + return false; + } + + var capped; + + // cap values of the space prior converting all values + for (i = 0; i < space.length; i++) { + capped = Math.max(0, Math.min(maxes[space][i], values[space][i])); + values[space][i] = Math.round(capped); + } + + // convert to all the other color spaces + for (var sname in spaces) { + if (sname !== space) { + values[sname] = colorConvert[space][sname](values[space]); + } + } + + return true; +}; + +Color.prototype.setSpace = function (space, args) { + var vals = args[0]; + + if (vals === undefined) { + // color.rgb() + return this.getValues(space); + } + + // color.rgb(10, 10, 10) + if (typeof vals === 'number') { + vals = Array.prototype.slice.call(args); + } + + this.setValues(space, vals); + return this; +}; + +Color.prototype.setChannel = function (space, index, val) { + var svalues = this.values[space]; + if (val === undefined) { + // color.red() + return svalues[index]; + } else if (val === svalues[index]) { + // color.red(color.red()) + return this; + } + + // color.red(100) + svalues[index] = val; + this.setValues(space, svalues); + + return this; +}; + +if (typeof window !== 'undefined') { + window.Color = Color; +} + +var chartjsColor = Color; + +function isValidKey(key) {
+ return ['__proto__', 'prototype', 'constructor'].indexOf(key) === -1;
+}
+
+/**
+ * @namespace Chart.helpers
+ */
+var helpers = {
+ /**
+ * An empty function that can be used, for example, for optional callback.
+ */
+ noop: function() {},
+
+ /**
+ * Returns a unique id, sequentially generated from a global variable.
+ * @returns {number}
+ * @function
+ */
+ uid: (function() {
+ var id = 0;
+ return function() {
+ return id++;
+ };
+ }()),
+
+ /**
+ * Returns true if `value` is neither null nor undefined, else returns false.
+ * @param {*} value - The value to test.
+ * @returns {boolean}
+ * @since 2.7.0
+ */
+ isNullOrUndef: function(value) {
+ return value === null || typeof value === 'undefined';
+ },
+
+ /**
+ * Returns true if `value` is an array (including typed arrays), else returns false.
+ * @param {*} value - The value to test.
+ * @returns {boolean}
+ * @function
+ */
+ isArray: function(value) {
+ if (Array.isArray && Array.isArray(value)) {
+ return true;
+ }
+ var type = Object.prototype.toString.call(value);
+ if (type.substr(0, 7) === '[object' && type.substr(-6) === 'Array]') {
+ return true;
+ }
+ return false;
+ },
+
+ /**
+ * Returns true if `value` is an object (excluding null), else returns false.
+ * @param {*} value - The value to test.
+ * @returns {boolean}
+ * @since 2.7.0
+ */
+ isObject: function(value) {
+ return value !== null && Object.prototype.toString.call(value) === '[object Object]';
+ },
+
+ /**
+ * Returns true if `value` is a finite number, else returns false
+ * @param {*} value - The value to test.
+ * @returns {boolean}
+ */
+ isFinite: function(value) {
+ return (typeof value === 'number' || value instanceof Number) && isFinite(value);
+ },
+
+ /**
+ * Returns `value` if defined, else returns `defaultValue`.
+ * @param {*} value - The value to return if defined.
+ * @param {*} defaultValue - The value to return if `value` is undefined.
+ * @returns {*}
+ */
+ valueOrDefault: function(value, defaultValue) {
+ return typeof value === 'undefined' ? defaultValue : value;
+ },
+
+ /**
+ * Returns value at the given `index` in array if defined, else returns `defaultValue`.
+ * @param {Array} value - The array to lookup for value at `index`.
+ * @param {number} index - The index in `value` to lookup for value.
+ * @param {*} defaultValue - The value to return if `value[index]` is undefined.
+ * @returns {*}
+ */
+ valueAtIndexOrDefault: function(value, index, defaultValue) {
+ return helpers.valueOrDefault(helpers.isArray(value) ? value[index] : value, defaultValue);
+ },
+
+ /**
+ * Calls `fn` with the given `args` in the scope defined by `thisArg` and returns the
+ * value returned by `fn`. If `fn` is not a function, this method returns undefined.
+ * @param {function} fn - The function to call.
+ * @param {Array|undefined|null} args - The arguments with which `fn` should be called.
+ * @param {object} [thisArg] - The value of `this` provided for the call to `fn`.
+ * @returns {*}
+ */
+ callback: function(fn, args, thisArg) {
+ if (fn && typeof fn.call === 'function') {
+ return fn.apply(thisArg, args);
+ }
+ },
+
+ /**
+ * Note(SB) for performance sake, this method should only be used when loopable type
+ * is unknown or in none intensive code (not called often and small loopable). Else
+ * it's preferable to use a regular for() loop and save extra function calls.
+ * @param {object|Array} loopable - The object or array to be iterated.
+ * @param {function} fn - The function to call for each item.
+ * @param {object} [thisArg] - The value of `this` provided for the call to `fn`.
+ * @param {boolean} [reverse] - If true, iterates backward on the loopable.
+ */
+ each: function(loopable, fn, thisArg, reverse) {
+ var i, len, keys;
+ if (helpers.isArray(loopable)) {
+ len = loopable.length;
+ if (reverse) {
+ for (i = len - 1; i >= 0; i--) {
+ fn.call(thisArg, loopable[i], i);
+ }
+ } else {
+ for (i = 0; i < len; i++) {
+ fn.call(thisArg, loopable[i], i);
+ }
+ }
+ } else if (helpers.isObject(loopable)) {
+ keys = Object.keys(loopable);
+ len = keys.length;
+ for (i = 0; i < len; i++) {
+ fn.call(thisArg, loopable[keys[i]], keys[i]);
+ }
+ }
+ },
+
+ /**
+ * Returns true if the `a0` and `a1` arrays have the same content, else returns false.
+ * @see https://stackoverflow.com/a/14853974
+ * @param {Array} a0 - The array to compare
+ * @param {Array} a1 - The array to compare
+ * @returns {boolean}
+ */
+ arrayEquals: function(a0, a1) {
+ var i, ilen, v0, v1;
+
+ if (!a0 || !a1 || a0.length !== a1.length) {
+ return false;
+ }
+
+ for (i = 0, ilen = a0.length; i < ilen; ++i) {
+ v0 = a0[i];
+ v1 = a1[i];
+
+ if (v0 instanceof Array && v1 instanceof Array) {
+ if (!helpers.arrayEquals(v0, v1)) {
+ return false;
+ }
+ } else if (v0 !== v1) {
+ // NOTE: two different object instances will never be equal: {x:20} != {x:20}
+ return false;
+ }
+ }
+
+ return true;
+ },
+
+ /**
+ * Returns a deep copy of `source` without keeping references on objects and arrays.
+ * @param {*} source - The value to clone.
+ * @returns {*}
+ */
+ clone: function(source) {
+ if (helpers.isArray(source)) {
+ return source.map(helpers.clone);
+ }
+
+ if (helpers.isObject(source)) {
+ var target = Object.create(source);
+ var keys = Object.keys(source);
+ var klen = keys.length;
+ var k = 0;
+
+ for (; k < klen; ++k) {
+ target[keys[k]] = helpers.clone(source[keys[k]]);
+ }
+
+ return target;
+ }
+
+ return source;
+ },
+
+ /**
+ * The default merger when Chart.helpers.merge is called without merger option.
+ * Note(SB): also used by mergeConfig and mergeScaleConfig as fallback.
+ * @private
+ */
+ _merger: function(key, target, source, options) {
+ if (!isValidKey(key)) {
+ // We want to ensure we do not copy prototypes over
+ // as this can pollute global namespaces
+ return;
+ }
+
+ var tval = target[key];
+ var sval = source[key];
+
+ if (helpers.isObject(tval) && helpers.isObject(sval)) {
+ helpers.merge(tval, sval, options);
+ } else {
+ target[key] = helpers.clone(sval);
+ }
+ },
+
+ /**
+ * Merges source[key] in target[key] only if target[key] is undefined.
+ * @private
+ */
+ _mergerIf: function(key, target, source) {
+ if (!isValidKey(key)) {
+ // We want to ensure we do not copy prototypes over
+ // as this can pollute global namespaces
+ return;
+ }
+
+ var tval = target[key];
+ var sval = source[key];
+
+ if (helpers.isObject(tval) && helpers.isObject(sval)) {
+ helpers.mergeIf(tval, sval);
+ } else if (!target.hasOwnProperty(key)) {
+ target[key] = helpers.clone(sval);
+ }
+ },
+
+ /**
+ * Recursively deep copies `source` properties into `target` with the given `options`.
+ * IMPORTANT: `target` is not cloned and will be updated with `source` properties.
+ * @param {object} target - The target object in which all sources are merged into.
+ * @param {object|object[]} source - Object(s) to merge into `target`.
+ * @param {object} [options] - Merging options:
+ * @param {function} [options.merger] - The merge method (key, target, source, options)
+ * @returns {object} The `target` object.
+ */
+ merge: function(target, source, options) {
+ var sources = helpers.isArray(source) ? source : [source];
+ var ilen = sources.length;
+ var merge, i, keys, klen, k;
+
+ if (!helpers.isObject(target)) {
+ return target;
+ }
+
+ options = options || {};
+ merge = options.merger || helpers._merger;
+
+ for (i = 0; i < ilen; ++i) {
+ source = sources[i];
+ if (!helpers.isObject(source)) {
+ continue;
+ }
+
+ keys = Object.keys(source);
+ for (k = 0, klen = keys.length; k < klen; ++k) {
+ merge(keys[k], target, source, options);
+ }
+ }
+
+ return target;
+ },
+
+ /**
+ * Recursively deep copies `source` properties into `target` *only* if not defined in target.
+ * IMPORTANT: `target` is not cloned and will be updated with `source` properties.
+ * @param {object} target - The target object in which all sources are merged into.
+ * @param {object|object[]} source - Object(s) to merge into `target`.
+ * @returns {object} The `target` object.
+ */
+ mergeIf: function(target, source) {
+ return helpers.merge(target, source, {merger: helpers._mergerIf});
+ },
+
+ /**
+ * Applies the contents of two or more objects together into the first object.
+ * @param {object} target - The target object in which all objects are merged into.
+ * @param {object} arg1 - Object containing additional properties to merge in target.
+ * @param {object} argN - Additional objects containing properties to merge in target.
+ * @returns {object} The `target` object.
+ */
+ extend: Object.assign || function(target) {
+ return helpers.merge(target, [].slice.call(arguments, 1), {
+ merger: function(key, dst, src) {
+ dst[key] = src[key];
+ }
+ });
+ },
+
+ /**
+ * Basic javascript inheritance based on the model created in Backbone.js
+ */
+ inherits: function(extensions) {
+ var me = this;
+ var ChartElement = (extensions && extensions.hasOwnProperty('constructor')) ? extensions.constructor : function() {
+ return me.apply(this, arguments);
+ };
+
+ var Surrogate = function() {
+ this.constructor = ChartElement;
+ };
+
+ Surrogate.prototype = me.prototype;
+ ChartElement.prototype = new Surrogate();
+ ChartElement.extend = helpers.inherits;
+
+ if (extensions) {
+ helpers.extend(ChartElement.prototype, extensions);
+ }
+
+ ChartElement.__super__ = me.prototype;
+ return ChartElement;
+ },
+
+ _deprecated: function(scope, value, previous, current) {
+ if (value !== undefined) {
+ console.warn(scope + ': "' + previous +
+ '" is deprecated. Please use "' + current + '" instead');
+ }
+ }
+};
+
+var helpers_core = helpers;
+
+// DEPRECATIONS
+
+/**
+ * Provided for backward compatibility, use Chart.helpers.callback instead.
+ * @function Chart.helpers.callCallback
+ * @deprecated since version 2.6.0
+ * @todo remove at version 3
+ * @private
+ */
+helpers.callCallback = helpers.callback;
+
+/**
+ * Provided for backward compatibility, use Array.prototype.indexOf instead.
+ * Array.prototype.indexOf compatibility: Chrome, Opera, Safari, FF1.5+, IE9+
+ * @function Chart.helpers.indexOf
+ * @deprecated since version 2.7.0
+ * @todo remove at version 3
+ * @private
+ */
+helpers.indexOf = function(array, item, fromIndex) {
+ return Array.prototype.indexOf.call(array, item, fromIndex);
+};
+
+/**
+ * Provided for backward compatibility, use Chart.helpers.valueOrDefault instead.
+ * @function Chart.helpers.getValueOrDefault
+ * @deprecated since version 2.7.0
+ * @todo remove at version 3
+ * @private
+ */
+helpers.getValueOrDefault = helpers.valueOrDefault;
+
+/**
+ * Provided for backward compatibility, use Chart.helpers.valueAtIndexOrDefault instead.
+ * @function Chart.helpers.getValueAtIndexOrDefault
+ * @deprecated since version 2.7.0
+ * @todo remove at version 3
+ * @private
+ */
+helpers.getValueAtIndexOrDefault = helpers.valueAtIndexOrDefault; + +/**
+ * Easing functions adapted from Robert Penner's easing equations.
+ * @namespace Chart.helpers.easingEffects
+ * @see http://www.robertpenner.com/easing/
+ */
+var effects = {
+ linear: function(t) {
+ return t;
+ },
+
+ easeInQuad: function(t) {
+ return t * t;
+ },
+
+ easeOutQuad: function(t) {
+ return -t * (t - 2);
+ },
+
+ easeInOutQuad: function(t) {
+ if ((t /= 0.5) < 1) {
+ return 0.5 * t * t;
+ }
+ return -0.5 * ((--t) * (t - 2) - 1);
+ },
+
+ easeInCubic: function(t) {
+ return t * t * t;
+ },
+
+ easeOutCubic: function(t) {
+ return (t = t - 1) * t * t + 1;
+ },
+
+ easeInOutCubic: function(t) {
+ if ((t /= 0.5) < 1) {
+ return 0.5 * t * t * t;
+ }
+ return 0.5 * ((t -= 2) * t * t + 2);
+ },
+
+ easeInQuart: function(t) {
+ return t * t * t * t;
+ },
+
+ easeOutQuart: function(t) {
+ return -((t = t - 1) * t * t * t - 1);
+ },
+
+ easeInOutQuart: function(t) {
+ if ((t /= 0.5) < 1) {
+ return 0.5 * t * t * t * t;
+ }
+ return -0.5 * ((t -= 2) * t * t * t - 2);
+ },
+
+ easeInQuint: function(t) {
+ return t * t * t * t * t;
+ },
+
+ easeOutQuint: function(t) {
+ return (t = t - 1) * t * t * t * t + 1;
+ },
+
+ easeInOutQuint: function(t) {
+ if ((t /= 0.5) < 1) {
+ return 0.5 * t * t * t * t * t;
+ }
+ return 0.5 * ((t -= 2) * t * t * t * t + 2);
+ },
+
+ easeInSine: function(t) {
+ return -Math.cos(t * (Math.PI / 2)) + 1;
+ },
+
+ easeOutSine: function(t) {
+ return Math.sin(t * (Math.PI / 2));
+ },
+
+ easeInOutSine: function(t) {
+ return -0.5 * (Math.cos(Math.PI * t) - 1);
+ },
+
+ easeInExpo: function(t) {
+ return (t === 0) ? 0 : Math.pow(2, 10 * (t - 1));
+ },
+
+ easeOutExpo: function(t) {
+ return (t === 1) ? 1 : -Math.pow(2, -10 * t) + 1;
+ },
+
+ easeInOutExpo: function(t) {
+ if (t === 0) {
+ return 0;
+ }
+ if (t === 1) {
+ return 1;
+ }
+ if ((t /= 0.5) < 1) {
+ return 0.5 * Math.pow(2, 10 * (t - 1));
+ }
+ return 0.5 * (-Math.pow(2, -10 * --t) + 2);
+ },
+
+ easeInCirc: function(t) {
+ if (t >= 1) {
+ return t;
+ }
+ return -(Math.sqrt(1 - t * t) - 1);
+ },
+
+ easeOutCirc: function(t) {
+ return Math.sqrt(1 - (t = t - 1) * t);
+ },
+
+ easeInOutCirc: function(t) {
+ if ((t /= 0.5) < 1) {
+ return -0.5 * (Math.sqrt(1 - t * t) - 1);
+ }
+ return 0.5 * (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) {
+ return 1;
+ }
+ if (!p) {
+ p = 0.3;
+ }
+ if (a < 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 - 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) {
+ return 1;
+ }
+ if (!p) {
+ p = 0.3;
+ }
+ if (a < 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 - 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 /= 0.5) === 2) {
+ return 1;
+ }
+ if (!p) {
+ p = 0.45;
+ }
+ if (a < 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 - s) * (2 * Math.PI) / p));
+ }
+ return a * Math.pow(2, -10 * (t -= 1)) * Math.sin((t - s) * (2 * Math.PI) / p) * 0.5 + 1;
+ },
+ easeInBack: function(t) {
+ var s = 1.70158;
+ return t * t * ((s + 1) * t - s);
+ },
+
+ easeOutBack: function(t) {
+ var s = 1.70158;
+ return (t = t - 1) * t * ((s + 1) * t + s) + 1;
+ },
+
+ easeInOutBack: function(t) {
+ var s = 1.70158;
+ if ((t /= 0.5) < 1) {
+ return 0.5 * (t * t * (((s *= (1.525)) + 1) * t - s));
+ }
+ return 0.5 * ((t -= 2) * t * (((s *= (1.525)) + 1) * t + s) + 2);
+ },
+
+ easeInBounce: function(t) {
+ return 1 - effects.easeOutBounce(1 - t);
+ },
+
+ easeOutBounce: function(t) {
+ if (t < (1 / 2.75)) {
+ return 7.5625 * t * t;
+ }
+ if (t < (2 / 2.75)) {
+ return 7.5625 * (t -= (1.5 / 2.75)) * t + 0.75;
+ }
+ if (t < (2.5 / 2.75)) {
+ return 7.5625 * (t -= (2.25 / 2.75)) * t + 0.9375;
+ }
+ return 7.5625 * (t -= (2.625 / 2.75)) * t + 0.984375;
+ },
+
+ easeInOutBounce: function(t) {
+ if (t < 0.5) {
+ return effects.easeInBounce(t * 2) * 0.5;
+ }
+ return effects.easeOutBounce(t * 2 - 1) * 0.5 + 0.5;
+ }
+};
+
+var helpers_easing = {
+ effects: effects
+};
+
+// DEPRECATIONS
+
+/**
+ * Provided for backward compatibility, use Chart.helpers.easing.effects instead.
+ * @function Chart.helpers.easingEffects
+ * @deprecated since version 2.7.0
+ * @todo remove at version 3
+ * @private
+ */
+helpers_core.easingEffects = effects; + +var PI = Math.PI;
+var RAD_PER_DEG = PI / 180;
+var DOUBLE_PI = PI * 2;
+var HALF_PI = PI / 2;
+var QUARTER_PI = PI / 4;
+var TWO_THIRDS_PI = PI * 2 / 3;
+
+/**
+ * @namespace Chart.helpers.canvas
+ */
+var exports$1 = {
+ /**
+ * Clears the entire canvas associated to the given `chart`.
+ * @param {Chart} chart - The chart for which to clear the canvas.
+ */
+ clear: function(chart) {
+ chart.ctx.clearRect(0, 0, chart.width, chart.height);
+ },
+
+ /**
+ * Creates a "path" for a rectangle with rounded corners at position (x, y) with a
+ * given size (width, height) and the same `radius` for all corners.
+ * @param {CanvasRenderingContext2D} ctx - The canvas 2D Context.
+ * @param {number} x - The x axis of the coordinate for the rectangle starting point.
+ * @param {number} y - The y axis of the coordinate for the rectangle starting point.
+ * @param {number} width - The rectangle's width.
+ * @param {number} height - The rectangle's height.
+ * @param {number} radius - The rounded amount (in pixels) for the four corners.
+ * @todo handle `radius` as top-left, top-right, bottom-right, bottom-left array/object?
+ */
+ roundedRect: function(ctx, x, y, width, height, radius) {
+ if (radius) {
+ var r = Math.min(radius, height / 2, width / 2);
+ var left = x + r;
+ var top = y + r;
+ var right = x + width - r;
+ var bottom = y + height - r;
+
+ ctx.moveTo(x, top);
+ if (left < right && top < bottom) {
+ ctx.arc(left, top, r, -PI, -HALF_PI);
+ ctx.arc(right, top, r, -HALF_PI, 0);
+ ctx.arc(right, bottom, r, 0, HALF_PI);
+ ctx.arc(left, bottom, r, HALF_PI, PI);
+ } else if (left < right) {
+ ctx.moveTo(left, y);
+ ctx.arc(right, top, r, -HALF_PI, HALF_PI);
+ ctx.arc(left, top, r, HALF_PI, PI + HALF_PI);
+ } else if (top < bottom) {
+ ctx.arc(left, top, r, -PI, 0);
+ ctx.arc(left, bottom, r, 0, PI);
+ } else {
+ ctx.arc(left, top, r, -PI, PI);
+ }
+ ctx.closePath();
+ ctx.moveTo(x, y);
+ } else {
+ ctx.rect(x, y, width, height);
+ }
+ },
+
+ drawPoint: function(ctx, style, radius, x, y, rotation) {
+ var type, xOffset, yOffset, size, cornerRadius;
+ var rad = (rotation || 0) * RAD_PER_DEG;
+
+ if (style && typeof style === 'object') {
+ type = style.toString();
+ if (type === '[object HTMLImageElement]' || type === '[object HTMLCanvasElement]') {
+ ctx.save();
+ ctx.translate(x, y);
+ ctx.rotate(rad);
+ ctx.drawImage(style, -style.width / 2, -style.height / 2, style.width, style.height);
+ ctx.restore();
+ return;
+ }
+ }
+
+ if (isNaN(radius) || radius <= 0) {
+ return;
+ }
+
+ ctx.beginPath();
+
+ switch (style) {
+ // Default includes circle
+ default:
+ ctx.arc(x, y, radius, 0, DOUBLE_PI);
+ ctx.closePath();
+ break;
+ case 'triangle':
+ ctx.moveTo(x + Math.sin(rad) * radius, y - Math.cos(rad) * radius);
+ rad += TWO_THIRDS_PI;
+ ctx.lineTo(x + Math.sin(rad) * radius, y - Math.cos(rad) * radius);
+ rad += TWO_THIRDS_PI;
+ ctx.lineTo(x + Math.sin(rad) * radius, y - Math.cos(rad) * radius);
+ ctx.closePath();
+ break;
+ case 'rectRounded':
+ // NOTE: the rounded rect implementation changed to use `arc` instead of
+ // `quadraticCurveTo` since it generates better results when rect is
+ // almost a circle. 0.516 (instead of 0.5) produces results with visually
+ // closer proportion to the previous impl and it is inscribed in the
+ // circle with `radius`. For more details, see the following PRs:
+ // https://github.com/chartjs/Chart.js/issues/5597
+ // https://github.com/chartjs/Chart.js/issues/5858
+ cornerRadius = radius * 0.516;
+ size = radius - cornerRadius;
+ xOffset = Math.cos(rad + QUARTER_PI) * size;
+ yOffset = Math.sin(rad + QUARTER_PI) * size;
+ ctx.arc(x - xOffset, y - yOffset, cornerRadius, rad - PI, rad - HALF_PI);
+ ctx.arc(x + yOffset, y - xOffset, cornerRadius, rad - HALF_PI, rad);
+ ctx.arc(x + xOffset, y + yOffset, cornerRadius, rad, rad + HALF_PI);
+ ctx.arc(x - yOffset, y + xOffset, cornerRadius, rad + HALF_PI, rad + PI);
+ ctx.closePath();
+ break;
+ case 'rect':
+ if (!rotation) {
+ size = Math.SQRT1_2 * radius;
+ ctx.rect(x - size, y - size, 2 * size, 2 * size);
+ break;
+ }
+ rad += QUARTER_PI;
+ /* falls through */
+ case 'rectRot':
+ xOffset = Math.cos(rad) * radius;
+ yOffset = Math.sin(rad) * radius;
+ ctx.moveTo(x - xOffset, y - yOffset);
+ ctx.lineTo(x + yOffset, y - xOffset);
+ ctx.lineTo(x + xOffset, y + yOffset);
+ ctx.lineTo(x - yOffset, y + xOffset);
+ ctx.closePath();
+ break;
+ case 'crossRot':
+ rad += QUARTER_PI;
+ /* falls through */
+ case 'cross':
+ xOffset = Math.cos(rad) * radius;
+ yOffset = Math.sin(rad) * radius;
+ ctx.moveTo(x - xOffset, y - yOffset);
+ ctx.lineTo(x + xOffset, y + yOffset);
+ ctx.moveTo(x + yOffset, y - xOffset);
+ ctx.lineTo(x - yOffset, y + xOffset);
+ break;
+ case 'star':
+ xOffset = Math.cos(rad) * radius;
+ yOffset = Math.sin(rad) * radius;
+ ctx.moveTo(x - xOffset, y - yOffset);
+ ctx.lineTo(x + xOffset, y + yOffset);
+ ctx.moveTo(x + yOffset, y - xOffset);
+ ctx.lineTo(x - yOffset, y + xOffset);
+ rad += QUARTER_PI;
+ xOffset = Math.cos(rad) * radius;
+ yOffset = Math.sin(rad) * radius;
+ ctx.moveTo(x - xOffset, y - yOffset);
+ ctx.lineTo(x + xOffset, y + yOffset);
+ ctx.moveTo(x + yOffset, y - xOffset);
+ ctx.lineTo(x - yOffset, y + xOffset);
+ break;
+ case 'line':
+ xOffset = Math.cos(rad) * radius;
+ yOffset = Math.sin(rad) * radius;
+ ctx.moveTo(x - xOffset, y - yOffset);
+ ctx.lineTo(x + xOffset, y + yOffset);
+ break;
+ case 'dash':
+ ctx.moveTo(x, y);
+ ctx.lineTo(x + Math.cos(rad) * radius, y + Math.sin(rad) * radius);
+ break;
+ }
+
+ ctx.fill();
+ ctx.stroke();
+ },
+
+ /**
+ * Returns true if the point is inside the rectangle
+ * @param {object} point - The point to test
+ * @param {object} area - The rectangle
+ * @returns {boolean}
+ * @private
+ */
+ _isPointInArea: function(point, area) {
+ var epsilon = 1e-6; // 1e-6 is margin in pixels for accumulated error.
+
+ return point.x > area.left - epsilon && point.x < area.right + epsilon &&
+ point.y > area.top - epsilon && point.y < area.bottom + epsilon;
+ },
+
+ clipArea: function(ctx, area) {
+ ctx.save();
+ ctx.beginPath();
+ ctx.rect(area.left, area.top, area.right - area.left, area.bottom - area.top);
+ ctx.clip();
+ },
+
+ unclipArea: function(ctx) {
+ ctx.restore();
+ },
+
+ lineTo: function(ctx, previous, target, flip) {
+ var stepped = target.steppedLine;
+ if (stepped) {
+ if (stepped === 'middle') {
+ var midpoint = (previous.x + target.x) / 2.0;
+ ctx.lineTo(midpoint, flip ? target.y : previous.y);
+ ctx.lineTo(midpoint, flip ? previous.y : target.y);
+ } else if ((stepped === 'after' && !flip) || (stepped !== 'after' && flip)) {
+ ctx.lineTo(previous.x, target.y);
+ } else {
+ ctx.lineTo(target.x, previous.y);
+ }
+ ctx.lineTo(target.x, target.y);
+ return;
+ }
+
+ if (!target.tension) {
+ ctx.lineTo(target.x, target.y);
+ return;
+ }
+
+ ctx.bezierCurveTo(
+ flip ? previous.controlPointPreviousX : previous.controlPointNextX,
+ flip ? previous.controlPointPreviousY : previous.controlPointNextY,
+ flip ? target.controlPointNextX : target.controlPointPreviousX,
+ flip ? target.controlPointNextY : target.controlPointPreviousY,
+ target.x,
+ target.y);
+ }
+};
+
+var helpers_canvas = exports$1;
+
+// DEPRECATIONS
+
+/**
+ * Provided for backward compatibility, use Chart.helpers.canvas.clear instead.
+ * @namespace Chart.helpers.clear
+ * @deprecated since version 2.7.0
+ * @todo remove at version 3
+ * @private
+ */
+helpers_core.clear = exports$1.clear;
+
+/**
+ * Provided for backward compatibility, use Chart.helpers.canvas.roundedRect instead.
+ * @namespace Chart.helpers.drawRoundedRectangle
+ * @deprecated since version 2.7.0
+ * @todo remove at version 3
+ * @private
+ */
+helpers_core.drawRoundedRectangle = function(ctx) {
+ ctx.beginPath();
+ exports$1.roundedRect.apply(exports$1, arguments);
+}; + +var defaults = {
+ /**
+ * @private
+ */
+ _set: function(scope, values) {
+ return helpers_core.merge(this[scope] || (this[scope] = {}), values);
+ }
+};
+
+// TODO(v3): remove 'global' from namespace. all default are global and
+// there's inconsistency around which options are under 'global'
+defaults._set('global', {
+ defaultColor: 'rgba(0,0,0,0.1)',
+ defaultFontColor: '#666',
+ defaultFontFamily: "'Helvetica Neue', 'Helvetica', 'Arial', sans-serif",
+ defaultFontSize: 12,
+ defaultFontStyle: 'normal',
+ defaultLineHeight: 1.2,
+ showLines: true
+});
+
+var core_defaults = defaults; + +var valueOrDefault = helpers_core.valueOrDefault;
+
+/**
+ * Converts the given font object into a CSS font string.
+ * @param {object} font - A font object.
+ * @return {string} The CSS font string. See https://developer.mozilla.org/en-US/docs/Web/CSS/font
+ * @private
+ */
+function toFontString(font) {
+ if (!font || helpers_core.isNullOrUndef(font.size) || helpers_core.isNullOrUndef(font.family)) {
+ return null;
+ }
+
+ return (font.style ? font.style + ' ' : '')
+ + (font.weight ? font.weight + ' ' : '')
+ + font.size + 'px '
+ + font.family;
+}
+
+/**
+ * @alias Chart.helpers.options
+ * @namespace
+ */
+var helpers_options = {
+ /**
+ * Converts the given line height `value` in pixels for a specific font `size`.
+ * @param {number|string} value - The lineHeight to parse (eg. 1.6, '14px', '75%', '1.6em').
+ * @param {number} size - The font size (in pixels) used to resolve relative `value`.
+ * @returns {number} The effective line height in pixels (size * 1.2 if value is invalid).
+ * @see https://developer.mozilla.org/en-US/docs/Web/CSS/line-height
+ * @since 2.7.0
+ */
+ toLineHeight: function(value, size) {
+ var matches = ('' + value).match(/^(normal|(\d+(?:\.\d+)?)(px|em|%)?)$/);
+ if (!matches || matches[1] === 'normal') {
+ return size * 1.2;
+ }
+
+ value = +matches[2];
+
+ switch (matches[3]) {
+ case 'px':
+ return value;
+ case '%':
+ value /= 100;
+ break;
+ }
+
+ return size * value;
+ },
+
+ /**
+ * Converts the given value into a padding object with pre-computed width/height.
+ * @param {number|object} value - If a number, set the value to all TRBL component,
+ * else, if and object, use defined properties and sets undefined ones to 0.
+ * @returns {object} The padding values (top, right, bottom, left, width, height)
+ * @since 2.7.0
+ */
+ toPadding: function(value) {
+ var t, r, b, l;
+
+ if (helpers_core.isObject(value)) {
+ t = +value.top || 0;
+ r = +value.right || 0;
+ b = +value.bottom || 0;
+ l = +value.left || 0;
+ } else {
+ t = r = b = l = +value || 0;
+ }
+
+ return {
+ top: t,
+ right: r,
+ bottom: b,
+ left: l,
+ height: t + b,
+ width: l + r
+ };
+ },
+
+ /**
+ * Parses font options and returns the font object.
+ * @param {object} options - A object that contains font options to be parsed.
+ * @return {object} The font object.
+ * @todo Support font.* options and renamed to toFont().
+ * @private
+ */
+ _parseFont: function(options) {
+ var globalDefaults = core_defaults.global;
+ var size = valueOrDefault(options.fontSize, globalDefaults.defaultFontSize);
+ var font = {
+ family: valueOrDefault(options.fontFamily, globalDefaults.defaultFontFamily),
+ lineHeight: helpers_core.options.toLineHeight(valueOrDefault(options.lineHeight, globalDefaults.defaultLineHeight), size),
+ size: size,
+ style: valueOrDefault(options.fontStyle, globalDefaults.defaultFontStyle),
+ weight: null,
+ string: ''
+ };
+
+ font.string = toFontString(font);
+ return font;
+ },
+
+ /**
+ * Evaluates the given `inputs` sequentially and returns the first defined value.
+ * @param {Array} inputs - An array of values, falling back to the last value.
+ * @param {object} [context] - If defined and the current value is a function, the value
+ * is called with `context` as first argument and the result becomes the new input.
+ * @param {number} [index] - If defined and the current value is an array, the value
+ * at `index` become the new input.
+ * @param {object} [info] - object to return information about resolution in
+ * @param {boolean} [info.cacheable] - Will be set to `false` if option is not cacheable.
+ * @since 2.7.0
+ */
+ resolve: function(inputs, context, index, info) {
+ var cacheable = true;
+ var i, ilen, value;
+
+ for (i = 0, ilen = inputs.length; i < ilen; ++i) {
+ value = inputs[i];
+ if (value === undefined) {
+ continue;
+ }
+ if (context !== undefined && typeof value === 'function') {
+ value = value(context);
+ cacheable = false;
+ }
+ if (index !== undefined && helpers_core.isArray(value)) {
+ value = value[index];
+ cacheable = false;
+ }
+ if (value !== undefined) {
+ if (info && !cacheable) {
+ info.cacheable = false;
+ }
+ return value;
+ }
+ }
+ }
+}; + +/**
+ * @alias Chart.helpers.math
+ * @namespace
+ */
+var exports$2 = {
+ /**
+ * Returns an array of factors sorted from 1 to sqrt(value)
+ * @private
+ */
+ _factorize: function(value) {
+ var result = [];
+ var sqrt = Math.sqrt(value);
+ var i;
+
+ for (i = 1; i < sqrt; i++) {
+ if (value % i === 0) {
+ result.push(i);
+ result.push(value / i);
+ }
+ }
+ if (sqrt === (sqrt | 0)) { // if value is a square number
+ result.push(sqrt);
+ }
+
+ result.sort(function(a, b) {
+ return a - b;
+ }).pop();
+ return result;
+ },
+
+ log10: Math.log10 || function(x) {
+ var exponent = Math.log(x) * Math.LOG10E; // Math.LOG10E = 1 / Math.LN10.
+ // Check for whole powers of 10,
+ // which due to floating point rounding error should be corrected.
+ var powerOf10 = Math.round(exponent);
+ var isPowerOf10 = x === Math.pow(10, powerOf10);
+
+ return isPowerOf10 ? powerOf10 : exponent;
+ }
+};
+
+var helpers_math = exports$2;
+
+// DEPRECATIONS
+
+/**
+ * Provided for backward compatibility, use Chart.helpers.math.log10 instead.
+ * @namespace Chart.helpers.log10
+ * @deprecated since version 2.9.0
+ * @todo remove at version 3
+ * @private
+ */
+helpers_core.log10 = exports$2.log10; + +var getRtlAdapter = function(rectX, width) {
+ return {
+ x: function(x) {
+ return rectX + rectX + width - x;
+ },
+ setWidth: function(w) {
+ width = w;
+ },
+ textAlign: function(align) {
+ if (align === 'center') {
+ return align;
+ }
+ return align === 'right' ? 'left' : 'right';
+ },
+ xPlus: function(x, value) {
+ return x - value;
+ },
+ leftForLtr: function(x, itemWidth) {
+ return x - itemWidth;
+ },
+ };
+};
+
+var getLtrAdapter = function() {
+ return {
+ x: function(x) {
+ return x;
+ },
+ setWidth: function(w) { // eslint-disable-line no-unused-vars
+ },
+ textAlign: function(align) {
+ return align;
+ },
+ xPlus: function(x, value) {
+ return x + value;
+ },
+ leftForLtr: function(x, _itemWidth) { // eslint-disable-line no-unused-vars
+ return x;
+ },
+ };
+};
+
+var getAdapter = function(rtl, rectX, width) {
+ return rtl ? getRtlAdapter(rectX, width) : getLtrAdapter();
+};
+
+var overrideTextDirection = function(ctx, direction) {
+ var style, original;
+ if (direction === 'ltr' || direction === 'rtl') {
+ style = ctx.canvas.style;
+ original = [
+ style.getPropertyValue('direction'),
+ style.getPropertyPriority('direction'),
+ ];
+
+ style.setProperty('direction', direction, 'important');
+ ctx.prevTextDirection = original;
+ }
+};
+
+var restoreTextDirection = function(ctx) {
+ var original = ctx.prevTextDirection;
+ if (original !== undefined) {
+ delete ctx.prevTextDirection;
+ ctx.canvas.style.setProperty('direction', original[0], original[1]);
+ }
+};
+
+var helpers_rtl = {
+ getRtlAdapter: getAdapter,
+ overrideTextDirection: overrideTextDirection,
+ restoreTextDirection: restoreTextDirection,
+}; + +var helpers$1 = helpers_core;
+var easing = helpers_easing;
+var canvas = helpers_canvas;
+var options = helpers_options;
+var math = helpers_math;
+var rtl = helpers_rtl; +helpers$1.easing = easing; +helpers$1.canvas = canvas; +helpers$1.options = options; +helpers$1.math = math; +helpers$1.rtl = rtl; + +function interpolate(start, view, model, ease) {
+ var keys = Object.keys(model);
+ var i, ilen, key, actual, origin, target, type, c0, c1;
+
+ for (i = 0, ilen = keys.length; i < ilen; ++i) {
+ key = keys[i];
+
+ target = model[key];
+
+ // if a value is added to the model after pivot() has been called, the view
+ // doesn't contain it, so let's initialize the view to the target value.
+ if (!view.hasOwnProperty(key)) {
+ view[key] = target;
+ }
+
+ actual = view[key];
+
+ if (actual === target || key[0] === '_') {
+ continue;
+ }
+
+ if (!start.hasOwnProperty(key)) {
+ start[key] = actual;
+ }
+
+ origin = start[key];
+
+ type = typeof target;
+
+ if (type === typeof origin) {
+ if (type === 'string') {
+ c0 = chartjsColor(origin);
+ if (c0.valid) {
+ c1 = chartjsColor(target);
+ if (c1.valid) {
+ view[key] = c1.mix(c0, ease).rgbString();
+ continue;
+ }
+ }
+ } else if (helpers$1.isFinite(origin) && helpers$1.isFinite(target)) {
+ view[key] = origin + (target - origin) * ease;
+ continue;
+ }
+ }
+
+ view[key] = target;
+ }
+}
+
+var Element = function(configuration) {
+ helpers$1.extend(this, configuration);
+ this.initialize.apply(this, arguments);
+};
+
+helpers$1.extend(Element.prototype, {
+ _type: undefined,
+
+ initialize: function() {
+ this.hidden = false;
+ },
+
+ pivot: function() {
+ var me = this;
+ if (!me._view) {
+ me._view = helpers$1.extend({}, me._model);
+ }
+ me._start = {};
+ return me;
+ },
+
+ transition: function(ease) {
+ var me = this;
+ var model = me._model;
+ var start = me._start;
+ var view = me._view;
+
+ // No animation -> No Transition
+ if (!model || ease === 1) {
+ me._view = helpers$1.extend({}, model);
+ me._start = null;
+ return me;
+ }
+
+ if (!view) {
+ view = me._view = {};
+ }
+
+ if (!start) {
+ start = me._start = {};
+ }
+
+ interpolate(start, view, model, ease);
+
+ return me;
+ },
+
+ tooltipPosition: function() {
+ return {
+ x: this._model.x,
+ y: this._model.y
+ };
+ },
+
+ hasValue: function() {
+ return helpers$1.isNumber(this._model.x) && helpers$1.isNumber(this._model.y);
+ }
+});
+
+Element.extend = helpers$1.inherits;
+
+var core_element = Element; + +var exports$3 = core_element.extend({
+ chart: null, // the animation associated chart instance
+ currentStep: 0, // 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
+});
+
+var core_animation = exports$3;
+
+// DEPRECATIONS
+
+/**
+ * Provided for backward compatibility, use Chart.Animation instead
+ * @prop Chart.Animation#animationObject
+ * @deprecated since version 2.6.0
+ * @todo remove at version 3
+ */
+Object.defineProperty(exports$3.prototype, 'animationObject', {
+ get: function() {
+ return this;
+ }
+});
+
+/**
+ * Provided for backward compatibility, use Chart.Animation#chart instead
+ * @prop Chart.Animation#chartInstance
+ * @deprecated since version 2.6.0
+ * @todo remove at version 3
+ */
+Object.defineProperty(exports$3.prototype, 'chartInstance', {
+ get: function() {
+ return this.chart;
+ },
+ set: function(value) {
+ this.chart = value;
+ }
+}); + +core_defaults._set('global', {
+ animation: {
+ duration: 1000,
+ easing: 'easeOutQuart',
+ onProgress: helpers$1.noop,
+ onComplete: helpers$1.noop
+ }
+});
+
+var core_animations = {
+ animations: [],
+ request: null,
+
+ /**
+ * @param {Chart} chart - The chart to animate.
+ * @param {Chart.Animation} animation - The animation that we will animate.
+ * @param {number} duration - The animation duration in ms.
+ * @param {boolean} lazy - if true, the chart is not marked as animating to enable more responsive interactions
+ */
+ addAnimation: function(chart, animation, duration, lazy) {
+ var animations = this.animations;
+ var i, ilen;
+
+ animation.chart = chart;
+ animation.startTime = Date.now();
+ animation.duration = duration;
+
+ if (!lazy) {
+ chart.animating = true;
+ }
+
+ for (i = 0, ilen = animations.length; i < ilen; ++i) {
+ if (animations[i].chart === chart) {
+ animations[i] = animation;
+ return;
+ }
+ }
+
+ animations.push(animation);
+
+ // If there are no animations queued, manually kickstart a digest, for lack of a better word
+ if (animations.length === 1) {
+ this.requestAnimationFrame();
+ }
+ },
+
+ cancelAnimation: function(chart) {
+ var index = helpers$1.findIndex(this.animations, function(animation) {
+ return animation.chart === chart;
+ });
+
+ if (index !== -1) {
+ this.animations.splice(index, 1);
+ chart.animating = false;
+ }
+ },
+
+ requestAnimationFrame: function() {
+ var me = this;
+ if (me.request === null) {
+ // Skip animation frame requests until the active one is executed.
+ // This can happen when processing mouse events, e.g. 'mousemove'
+ // and 'mouseout' events will trigger multiple renders.
+ me.request = helpers$1.requestAnimFrame.call(window, function() {
+ me.request = null;
+ me.startDigest();
+ });
+ }
+ },
+
+ /**
+ * @private
+ */
+ startDigest: function() {
+ var me = this;
+
+ me.advance();
+
+ // Do we have more stuff to animate?
+ if (me.animations.length > 0) {
+ me.requestAnimationFrame();
+ }
+ },
+
+ /**
+ * @private
+ */
+ advance: function() {
+ var animations = this.animations;
+ var animation, chart, numSteps, nextStep;
+ var i = 0;
+
+ // 1 animation per chart, so we are looping charts here
+ while (i < animations.length) {
+ animation = animations[i];
+ chart = animation.chart;
+ numSteps = animation.numSteps;
+
+ // Make sure that currentStep starts at 1
+ // https://github.com/chartjs/Chart.js/issues/6104
+ nextStep = Math.floor((Date.now() - animation.startTime) / animation.duration * numSteps) + 1;
+ animation.currentStep = Math.min(nextStep, numSteps);
+
+ helpers$1.callback(animation.render, [chart, animation], chart);
+ helpers$1.callback(animation.onAnimationProgress, [animation], chart);
+
+ if (animation.currentStep >= numSteps) {
+ helpers$1.callback(animation.onAnimationComplete, [animation], chart);
+ chart.animating = false;
+ animations.splice(i, 1);
+ } else {
+ ++i;
+ }
+ }
+ }
+}; + +var resolve = helpers$1.options.resolve;
+
+var arrayEvents = ['push', 'pop', 'shift', 'splice', 'unshift'];
+
+/**
+ * Hooks the array methods that add or remove values ('push', pop', 'shift', 'splice',
+ * 'unshift') and notify the listener AFTER the array has been altered. Listeners are
+ * called on the 'onData*' callbacks (e.g. onDataPush, etc.) with same arguments.
+ */
+function listenArrayEvents(array, listener) {
+ if (array._chartjs) {
+ array._chartjs.listeners.push(listener);
+ return;
+ }
+
+ Object.defineProperty(array, '_chartjs', {
+ configurable: true,
+ enumerable: false,
+ value: {
+ listeners: [listener]
+ }
+ });
+
+ arrayEvents.forEach(function(key) {
+ var method = 'onData' + key.charAt(0).toUpperCase() + key.slice(1);
+ var base = array[key];
+
+ Object.defineProperty(array, key, {
+ configurable: true,
+ enumerable: false,
+ value: function() {
+ var args = Array.prototype.slice.call(arguments);
+ var res = base.apply(this, args);
+
+ helpers$1.each(array._chartjs.listeners, function(object) {
+ if (typeof object[method] === 'function') {
+ object[method].apply(object, args);
+ }
+ });
+
+ return res;
+ }
+ });
+ });
+}
+
+/**
+ * Removes the given array event listener and cleanup extra attached properties (such as
+ * the _chartjs stub and overridden methods) if array doesn't have any more listeners.
+ */
+function unlistenArrayEvents(array, listener) {
+ var stub = array._chartjs;
+ if (!stub) {
+ return;
+ }
+
+ var listeners = stub.listeners;
+ var index = listeners.indexOf(listener);
+ if (index !== -1) {
+ listeners.splice(index, 1);
+ }
+
+ if (listeners.length > 0) {
+ return;
+ }
+
+ arrayEvents.forEach(function(key) {
+ delete array[key];
+ });
+
+ delete array._chartjs;
+}
+
+// Base class for all dataset controllers (line, bar, etc)
+var DatasetController = function(chart, datasetIndex) {
+ this.initialize(chart, datasetIndex);
+};
+
+helpers$1.extend(DatasetController.prototype, {
+
+ /**
+ * Element type used to generate a meta dataset (e.g. Chart.element.Line).
+ * @type {Chart.core.element}
+ */
+ datasetElementType: null,
+
+ /**
+ * Element type used to generate a meta data (e.g. Chart.element.Point).
+ * @type {Chart.core.element}
+ */
+ dataElementType: null,
+
+ /**
+ * Dataset element option keys to be resolved in _resolveDatasetElementOptions.
+ * A derived controller may override this to resolve controller-specific options.
+ * The keys defined here are for backward compatibility for legend styles.
+ * @private
+ */
+ _datasetElementOptions: [
+ 'backgroundColor',
+ 'borderCapStyle',
+ 'borderColor',
+ 'borderDash',
+ 'borderDashOffset',
+ 'borderJoinStyle',
+ 'borderWidth'
+ ],
+
+ /**
+ * Data element option keys to be resolved in _resolveDataElementOptions.
+ * A derived controller may override this to resolve controller-specific options.
+ * The keys defined here are for backward compatibility for legend styles.
+ * @private
+ */
+ _dataElementOptions: [
+ 'backgroundColor',
+ 'borderColor',
+ 'borderWidth',
+ 'pointStyle'
+ ],
+
+ initialize: function(chart, datasetIndex) {
+ var me = this;
+ me.chart = chart;
+ me.index = datasetIndex;
+ me.linkScales();
+ me.addElements();
+ me._type = me.getMeta().type;
+ },
+
+ updateIndex: function(datasetIndex) {
+ this.index = datasetIndex;
+ },
+
+ linkScales: function() {
+ var me = this;
+ var meta = me.getMeta();
+ var chart = me.chart;
+ var scales = chart.scales;
+ var dataset = me.getDataset();
+ var scalesOpts = chart.options.scales;
+
+ if (meta.xAxisID === null || !(meta.xAxisID in scales) || dataset.xAxisID) {
+ meta.xAxisID = dataset.xAxisID || scalesOpts.xAxes[0].id;
+ }
+ if (meta.yAxisID === null || !(meta.yAxisID in scales) || dataset.yAxisID) {
+ meta.yAxisID = dataset.yAxisID || scalesOpts.yAxes[0].id;
+ }
+ },
+
+ getDataset: function() {
+ return this.chart.data.datasets[this.index];
+ },
+
+ getMeta: function() {
+ return this.chart.getDatasetMeta(this.index);
+ },
+
+ getScaleForId: function(scaleID) {
+ return this.chart.scales[scaleID];
+ },
+
+ /**
+ * @private
+ */
+ _getValueScaleId: function() {
+ return this.getMeta().yAxisID;
+ },
+
+ /**
+ * @private
+ */
+ _getIndexScaleId: function() {
+ return this.getMeta().xAxisID;
+ },
+
+ /**
+ * @private
+ */
+ _getValueScale: function() {
+ return this.getScaleForId(this._getValueScaleId());
+ },
+
+ /**
+ * @private
+ */
+ _getIndexScale: function() {
+ return this.getScaleForId(this._getIndexScaleId());
+ },
+
+ reset: function() {
+ this._update(true);
+ },
+
+ /**
+ * @private
+ */
+ destroy: function() {
+ if (this._data) {
+ unlistenArrayEvents(this._data, this);
+ }
+ },
+
+ createMetaDataset: function() {
+ var me = this;
+ var type = me.datasetElementType;
+ return type && new type({
+ _chart: me.chart,
+ _datasetIndex: me.index
+ });
+ },
+
+ createMetaData: function(index) {
+ var me = this;
+ var type = me.dataElementType;
+ return type && new type({
+ _chart: me.chart,
+ _datasetIndex: me.index,
+ _index: index
+ });
+ },
+
+ addElements: function() {
+ var me = this;
+ var meta = me.getMeta();
+ var data = me.getDataset().data || [];
+ var metaData = meta.data;
+ var i, ilen;
+
+ for (i = 0, ilen = data.length; i < ilen; ++i) {
+ metaData[i] = metaData[i] || me.createMetaData(i);
+ }
+
+ meta.dataset = meta.dataset || me.createMetaDataset();
+ },
+
+ addElementAndReset: function(index) {
+ var element = this.createMetaData(index);
+ this.getMeta().data.splice(index, 0, element);
+ this.updateElement(element, index, true);
+ },
+
+ buildOrUpdateElements: function() {
+ var me = this;
+ var dataset = me.getDataset();
+ var data = dataset.data || (dataset.data = []);
+
+ // In order to correctly handle data addition/deletion animation (an thus simulate
+ // real-time charts), we need to monitor these data modifications and synchronize
+ // the internal meta data accordingly.
+ if (me._data !== data) {
+ if (me._data) {
+ // This case happens when the user replaced the data array instance.
+ unlistenArrayEvents(me._data, me);
+ }
+
+ if (data && Object.isExtensible(data)) {
+ listenArrayEvents(data, me);
+ }
+ me._data = data;
+ }
+
+ // Re-sync meta data in case the user replaced the data array or if we missed
+ // any updates and so make sure that we handle number of datapoints changing.
+ me.resyncElements();
+ },
+
+ /**
+ * Returns the merged user-supplied and default dataset-level options
+ * @private
+ */
+ _configure: function() {
+ var me = this;
+ me._config = helpers$1.merge(Object.create(null), [
+ me.chart.options.datasets[me._type],
+ me.getDataset(),
+ ], {
+ merger: function(key, target, source) {
+ if (key !== '_meta' && key !== 'data') {
+ helpers$1._merger(key, target, source);
+ }
+ }
+ });
+ },
+
+ _update: function(reset) {
+ var me = this;
+ me._configure();
+ me._cachedDataOpts = null;
+ me.update(reset);
+ },
+
+ update: helpers$1.noop,
+
+ transition: function(easingValue) {
+ var meta = this.getMeta();
+ var elements = meta.data || [];
+ var ilen = elements.length;
+ var i = 0;
+
+ for (; i < ilen; ++i) {
+ elements[i].transition(easingValue);
+ }
+
+ if (meta.dataset) {
+ meta.dataset.transition(easingValue);
+ }
+ },
+
+ draw: function() {
+ var meta = this.getMeta();
+ var elements = meta.data || [];
+ var ilen = elements.length;
+ var i = 0;
+
+ if (meta.dataset) {
+ meta.dataset.draw();
+ }
+
+ for (; i < ilen; ++i) {
+ elements[i].draw();
+ }
+ },
+
+ /**
+ * Returns a set of predefined style properties that should be used to represent the dataset
+ * or the data if the index is specified
+ * @param {number} index - data index
+ * @return {IStyleInterface} style object
+ */
+ getStyle: function(index) {
+ var me = this;
+ var meta = me.getMeta();
+ var dataset = meta.dataset;
+ var style;
+
+ me._configure();
+ if (dataset && index === undefined) {
+ style = me._resolveDatasetElementOptions(dataset || {});
+ } else {
+ index = index || 0;
+ style = me._resolveDataElementOptions(meta.data[index] || {}, index);
+ }
+
+ if (style.fill === false || style.fill === null) {
+ style.backgroundColor = style.borderColor;
+ }
+
+ return style;
+ },
+
+ /**
+ * @private
+ */
+ _resolveDatasetElementOptions: function(element, hover) {
+ var me = this;
+ var chart = me.chart;
+ var datasetOpts = me._config;
+ var custom = element.custom || {};
+ var options = chart.options.elements[me.datasetElementType.prototype._type] || {};
+ var elementOptions = me._datasetElementOptions;
+ var values = {};
+ var i, ilen, key, readKey;
+
+ // Scriptable options
+ var context = {
+ chart: chart,
+ dataset: me.getDataset(),
+ datasetIndex: me.index,
+ hover: hover
+ };
+
+ for (i = 0, ilen = elementOptions.length; i < ilen; ++i) {
+ key = elementOptions[i];
+ readKey = hover ? 'hover' + key.charAt(0).toUpperCase() + key.slice(1) : key;
+ values[key] = resolve([
+ custom[readKey],
+ datasetOpts[readKey],
+ options[readKey]
+ ], context);
+ }
+
+ return values;
+ },
+
+ /**
+ * @private
+ */
+ _resolveDataElementOptions: function(element, index) {
+ var me = this;
+ var custom = element && element.custom;
+ var cached = me._cachedDataOpts;
+ if (cached && !custom) {
+ return cached;
+ }
+ var chart = me.chart;
+ var datasetOpts = me._config;
+ var options = chart.options.elements[me.dataElementType.prototype._type] || {};
+ var elementOptions = me._dataElementOptions;
+ var values = {};
+
+ // Scriptable options
+ var context = {
+ chart: chart,
+ dataIndex: index,
+ dataset: me.getDataset(),
+ datasetIndex: me.index
+ };
+
+ // `resolve` sets cacheable to `false` if any option is indexed or scripted
+ var info = {cacheable: !custom};
+
+ var keys, i, ilen, key;
+
+ custom = custom || {};
+
+ if (helpers$1.isArray(elementOptions)) {
+ for (i = 0, ilen = elementOptions.length; i < ilen; ++i) {
+ key = elementOptions[i];
+ values[key] = resolve([
+ custom[key],
+ datasetOpts[key],
+ options[key]
+ ], context, index, info);
+ }
+ } else {
+ keys = Object.keys(elementOptions);
+ for (i = 0, ilen = keys.length; i < ilen; ++i) {
+ key = keys[i];
+ values[key] = resolve([
+ custom[key],
+ datasetOpts[elementOptions[key]],
+ datasetOpts[key],
+ options[key]
+ ], context, index, info);
+ }
+ }
+
+ if (info.cacheable) {
+ me._cachedDataOpts = Object.freeze(values);
+ }
+
+ return values;
+ },
+
+ removeHoverStyle: function(element) {
+ helpers$1.merge(element._model, element.$previousStyle || {});
+ delete element.$previousStyle;
+ },
+
+ setHoverStyle: function(element) {
+ var dataset = this.chart.data.datasets[element._datasetIndex];
+ var index = element._index;
+ var custom = element.custom || {};
+ var model = element._model;
+ var getHoverColor = helpers$1.getHoverColor;
+
+ element.$previousStyle = {
+ backgroundColor: model.backgroundColor,
+ borderColor: model.borderColor,
+ borderWidth: model.borderWidth
+ };
+
+ model.backgroundColor = resolve([custom.hoverBackgroundColor, dataset.hoverBackgroundColor, getHoverColor(model.backgroundColor)], undefined, index);
+ model.borderColor = resolve([custom.hoverBorderColor, dataset.hoverBorderColor, getHoverColor(model.borderColor)], undefined, index);
+ model.borderWidth = resolve([custom.hoverBorderWidth, dataset.hoverBorderWidth, model.borderWidth], undefined, index);
+ },
+
+ /**
+ * @private
+ */
+ _removeDatasetHoverStyle: function() {
+ var element = this.getMeta().dataset;
+
+ if (element) {
+ this.removeHoverStyle(element);
+ }
+ },
+
+ /**
+ * @private
+ */
+ _setDatasetHoverStyle: function() {
+ var element = this.getMeta().dataset;
+ var prev = {};
+ var i, ilen, key, keys, hoverOptions, model;
+
+ if (!element) {
+ return;
+ }
+
+ model = element._model;
+ hoverOptions = this._resolveDatasetElementOptions(element, true);
+
+ keys = Object.keys(hoverOptions);
+ for (i = 0, ilen = keys.length; i < ilen; ++i) {
+ key = keys[i];
+ prev[key] = model[key];
+ model[key] = hoverOptions[key];
+ }
+
+ element.$previousStyle = prev;
+ },
+
+ /**
+ * @private
+ */
+ resyncElements: function() {
+ var me = this;
+ var meta = me.getMeta();
+ var data = me.getDataset().data;
+ var numMeta = meta.data.length;
+ var numData = data.length;
+
+ if (numData < numMeta) {
+ meta.data.splice(numData, numMeta - numData);
+ } else if (numData > numMeta) {
+ me.insertElements(numMeta, numData - numMeta);
+ }
+ },
+
+ /**
+ * @private
+ */
+ insertElements: function(start, count) {
+ for (var i = 0; i < count; ++i) {
+ this.addElementAndReset(start + i);
+ }
+ },
+
+ /**
+ * @private
+ */
+ onDataPush: function() {
+ var count = arguments.length;
+ this.insertElements(this.getDataset().data.length - count, count);
+ },
+
+ /**
+ * @private
+ */
+ onDataPop: function() {
+ this.getMeta().data.pop();
+ },
+
+ /**
+ * @private
+ */
+ onDataShift: function() {
+ this.getMeta().data.shift();
+ },
+
+ /**
+ * @private
+ */
+ onDataSplice: function(start, count) {
+ this.getMeta().data.splice(start, count);
+ this.insertElements(start, arguments.length - 2);
+ },
+
+ /**
+ * @private
+ */
+ onDataUnshift: function() {
+ this.insertElements(0, arguments.length);
+ }
+});
+
+DatasetController.extend = helpers$1.inherits;
+
+var core_datasetController = DatasetController; + +var TAU = Math.PI * 2;
+
+core_defaults._set('global', {
+ elements: {
+ arc: {
+ backgroundColor: core_defaults.global.defaultColor,
+ borderColor: '#fff',
+ borderWidth: 2,
+ borderAlign: 'center'
+ }
+ }
+});
+
+function clipArc(ctx, arc) {
+ var startAngle = arc.startAngle;
+ var endAngle = arc.endAngle;
+ var pixelMargin = arc.pixelMargin;
+ var angleMargin = pixelMargin / arc.outerRadius;
+ var x = arc.x;
+ var y = arc.y;
+
+ // Draw an inner border by cliping the arc and drawing a double-width border
+ // Enlarge the clipping arc by 0.33 pixels to eliminate glitches between borders
+ ctx.beginPath();
+ ctx.arc(x, y, arc.outerRadius, startAngle - angleMargin, endAngle + angleMargin);
+ if (arc.innerRadius > pixelMargin) {
+ angleMargin = pixelMargin / arc.innerRadius;
+ ctx.arc(x, y, arc.innerRadius - pixelMargin, endAngle + angleMargin, startAngle - angleMargin, true);
+ } else {
+ ctx.arc(x, y, pixelMargin, endAngle + Math.PI / 2, startAngle - Math.PI / 2);
+ }
+ ctx.closePath();
+ ctx.clip();
+}
+
+function drawFullCircleBorders(ctx, vm, arc, inner) {
+ var endAngle = arc.endAngle;
+ var i;
+
+ if (inner) {
+ arc.endAngle = arc.startAngle + TAU;
+ clipArc(ctx, arc);
+ arc.endAngle = endAngle;
+ if (arc.endAngle === arc.startAngle && arc.fullCircles) {
+ arc.endAngle += TAU;
+ arc.fullCircles--;
+ }
+ }
+
+ ctx.beginPath();
+ ctx.arc(arc.x, arc.y, arc.innerRadius, arc.startAngle + TAU, arc.startAngle, true);
+ for (i = 0; i < arc.fullCircles; ++i) {
+ ctx.stroke();
+ }
+
+ ctx.beginPath();
+ ctx.arc(arc.x, arc.y, vm.outerRadius, arc.startAngle, arc.startAngle + TAU);
+ for (i = 0; i < arc.fullCircles; ++i) {
+ ctx.stroke();
+ }
+}
+
+function drawBorder(ctx, vm, arc) {
+ var inner = vm.borderAlign === 'inner';
+
+ if (inner) {
+ ctx.lineWidth = vm.borderWidth * 2;
+ ctx.lineJoin = 'round';
+ } else {
+ ctx.lineWidth = vm.borderWidth;
+ ctx.lineJoin = 'bevel';
+ }
+
+ if (arc.fullCircles) {
+ drawFullCircleBorders(ctx, vm, arc, inner);
+ }
+
+ if (inner) {
+ clipArc(ctx, arc);
+ }
+
+ ctx.beginPath();
+ ctx.arc(arc.x, arc.y, vm.outerRadius, arc.startAngle, arc.endAngle);
+ ctx.arc(arc.x, arc.y, arc.innerRadius, arc.endAngle, arc.startAngle, true);
+ ctx.closePath();
+ ctx.stroke();
+}
+
+var element_arc = core_element.extend({
+ _type: 'arc',
+
+ inLabelRange: function(mouseX) {
+ var vm = this._view;
+
+ if (vm) {
+ return (Math.pow(mouseX - vm.x, 2) < Math.pow(vm.radius + vm.hoverRadius, 2));
+ }
+ return false;
+ },
+
+ inRange: function(chartX, chartY) {
+ var vm = this._view;
+
+ if (vm) {
+ var pointRelativePosition = helpers$1.getAngleFromPoint(vm, {x: chartX, y: chartY});
+ var angle = pointRelativePosition.angle;
+ var distance = pointRelativePosition.distance;
+
+ // Sanitise angle range
+ var startAngle = vm.startAngle;
+ var endAngle = vm.endAngle;
+ while (endAngle < startAngle) {
+ endAngle += TAU;
+ }
+ while (angle > endAngle) {
+ angle -= TAU;
+ }
+ while (angle < startAngle) {
+ angle += TAU;
+ }
+
+ // Check if within the range of the open/close angle
+ var betweenAngles = (angle >= startAngle && angle <= endAngle);
+ var withinRadius = (distance >= vm.innerRadius && distance <= vm.outerRadius);
+
+ return (betweenAngles && withinRadius);
+ }
+ return false;
+ },
+
+ getCenterPoint: function() {
+ var vm = this._view;
+ var halfAngle = (vm.startAngle + vm.endAngle) / 2;
+ var halfRadius = (vm.innerRadius + vm.outerRadius) / 2;
+ return {
+ x: vm.x + Math.cos(halfAngle) * halfRadius,
+ y: vm.y + Math.sin(halfAngle) * halfRadius
+ };
+ },
+
+ getArea: function() {
+ var vm = this._view;
+ return Math.PI * ((vm.endAngle - vm.startAngle) / (2 * Math.PI)) * (Math.pow(vm.outerRadius, 2) - Math.pow(vm.innerRadius, 2));
+ },
+
+ tooltipPosition: function() {
+ var vm = this._view;
+ var centreAngle = vm.startAngle + ((vm.endAngle - vm.startAngle) / 2);
+ var 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;
+ var pixelMargin = (vm.borderAlign === 'inner') ? 0.33 : 0;
+ var arc = {
+ x: vm.x,
+ y: vm.y,
+ innerRadius: vm.innerRadius,
+ outerRadius: Math.max(vm.outerRadius - pixelMargin, 0),
+ pixelMargin: pixelMargin,
+ startAngle: vm.startAngle,
+ endAngle: vm.endAngle,
+ fullCircles: Math.floor(vm.circumference / TAU)
+ };
+ var i;
+
+ ctx.save();
+
+ ctx.fillStyle = vm.backgroundColor;
+ ctx.strokeStyle = vm.borderColor;
+
+ if (arc.fullCircles) {
+ arc.endAngle = arc.startAngle + TAU;
+ ctx.beginPath();
+ ctx.arc(arc.x, arc.y, arc.outerRadius, arc.startAngle, arc.endAngle);
+ ctx.arc(arc.x, arc.y, arc.innerRadius, arc.endAngle, arc.startAngle, true);
+ ctx.closePath();
+ for (i = 0; i < arc.fullCircles; ++i) {
+ ctx.fill();
+ }
+ arc.endAngle = arc.startAngle + vm.circumference % TAU;
+ }
+
+ ctx.beginPath();
+ ctx.arc(arc.x, arc.y, arc.outerRadius, arc.startAngle, arc.endAngle);
+ ctx.arc(arc.x, arc.y, arc.innerRadius, arc.endAngle, arc.startAngle, true);
+ ctx.closePath();
+ ctx.fill();
+
+ if (vm.borderWidth) {
+ drawBorder(ctx, vm, arc);
+ }
+
+ ctx.restore();
+ }
+}); + +var valueOrDefault$1 = helpers$1.valueOrDefault;
+
+var defaultColor = core_defaults.global.defaultColor;
+
+core_defaults._set('global', {
+ elements: {
+ line: {
+ tension: 0.4,
+ backgroundColor: defaultColor,
+ borderWidth: 3,
+ borderColor: defaultColor,
+ borderCapStyle: 'butt',
+ borderDash: [],
+ borderDashOffset: 0.0,
+ borderJoinStyle: 'miter',
+ capBezierPoints: true,
+ fill: true, // do we fill in the area between the line and its base axis
+ }
+ }
+});
+
+var element_line = core_element.extend({
+ _type: 'line',
+
+ draw: function() {
+ var me = this;
+ var vm = me._view;
+ var ctx = me._chart.ctx;
+ var spanGaps = vm.spanGaps;
+ var points = me._children.slice(); // clone array
+ var globalDefaults = core_defaults.global;
+ var globalOptionLineElements = globalDefaults.elements.line;
+ var lastDrawnIndex = -1;
+ var closePath = me._loop;
+ var index, previous, currentVM;
+
+ if (!points.length) {
+ return;
+ }
+
+ if (me._loop) {
+ for (index = 0; index < points.length; ++index) {
+ previous = helpers$1.previousItem(points, index);
+ // If the line has an open path, shift the point array
+ if (!points[index]._view.skip && previous._view.skip) {
+ points = points.slice(index).concat(points.slice(0, index));
+ closePath = spanGaps;
+ break;
+ }
+ }
+ // If the line has a close path, add the first point again
+ if (closePath) {
+ points.push(points[0]);
+ }
+ }
+
+ ctx.save();
+
+ // Stroke Line Options
+ ctx.lineCap = vm.borderCapStyle || globalOptionLineElements.borderCapStyle;
+
+ // IE 9 and 10 do not support line dash
+ if (ctx.setLineDash) {
+ ctx.setLineDash(vm.borderDash || globalOptionLineElements.borderDash);
+ }
+
+ ctx.lineDashOffset = valueOrDefault$1(vm.borderDashOffset, globalOptionLineElements.borderDashOffset);
+ ctx.lineJoin = vm.borderJoinStyle || globalOptionLineElements.borderJoinStyle;
+ ctx.lineWidth = valueOrDefault$1(vm.borderWidth, globalOptionLineElements.borderWidth);
+ ctx.strokeStyle = vm.borderColor || globalDefaults.defaultColor;
+
+ // Stroke Line
+ ctx.beginPath();
+
+ // First point moves to it's starting position no matter what
+ currentVM = points[0]._view;
+ if (!currentVM.skip) {
+ ctx.moveTo(currentVM.x, currentVM.y);
+ lastDrawnIndex = 0;
+ }
+
+ for (index = 1; index < points.length; ++index) {
+ currentVM = points[index]._view;
+ previous = lastDrawnIndex === -1 ? helpers$1.previousItem(points, index) : points[lastDrawnIndex];
+
+ if (!currentVM.skip) {
+ if ((lastDrawnIndex !== (index - 1) && !spanGaps) || lastDrawnIndex === -1) {
+ // There was a gap and this is the first point after the gap
+ ctx.moveTo(currentVM.x, currentVM.y);
+ } else {
+ // Line to next point
+ helpers$1.canvas.lineTo(ctx, previous._view, currentVM);
+ }
+ lastDrawnIndex = index;
+ }
+ }
+
+ if (closePath) {
+ ctx.closePath();
+ }
+
+ ctx.stroke();
+ ctx.restore();
+ }
+}); + +var valueOrDefault$2 = helpers$1.valueOrDefault;
+
+var defaultColor$1 = core_defaults.global.defaultColor;
+
+core_defaults._set('global', {
+ elements: {
+ point: {
+ radius: 3,
+ pointStyle: 'circle',
+ backgroundColor: defaultColor$1,
+ borderColor: defaultColor$1,
+ borderWidth: 1,
+ // Hover
+ hitRadius: 1,
+ hoverRadius: 4,
+ hoverBorderWidth: 1
+ }
+ }
+});
+
+function xRange(mouseX) {
+ var vm = this._view;
+ return vm ? (Math.abs(mouseX - vm.x) < vm.radius + vm.hitRadius) : false;
+}
+
+function yRange(mouseY) {
+ var vm = this._view;
+ return vm ? (Math.abs(mouseY - vm.y) < vm.radius + vm.hitRadius) : false;
+}
+
+var element_point = core_element.extend({
+ _type: 'point',
+
+ inRange: function(mouseX, mouseY) {
+ var vm = this._view;
+ return vm ? ((Math.pow(mouseX - vm.x, 2) + Math.pow(mouseY - vm.y, 2)) < Math.pow(vm.hitRadius + vm.radius, 2)) : false;
+ },
+
+ inLabelRange: xRange,
+ inXRange: xRange,
+ inYRange: yRange,
+
+ getCenterPoint: function() {
+ var vm = this._view;
+ return {
+ x: vm.x,
+ y: vm.y
+ };
+ },
+
+ getArea: function() {
+ return Math.PI * Math.pow(this._view.radius, 2);
+ },
+
+ tooltipPosition: function() {
+ var vm = this._view;
+ return {
+ x: vm.x,
+ y: vm.y,
+ padding: vm.radius + vm.borderWidth
+ };
+ },
+
+ draw: function(chartArea) {
+ var vm = this._view;
+ var ctx = this._chart.ctx;
+ var pointStyle = vm.pointStyle;
+ var rotation = vm.rotation;
+ var radius = vm.radius;
+ var x = vm.x;
+ var y = vm.y;
+ var globalDefaults = core_defaults.global;
+ var defaultColor = globalDefaults.defaultColor; // eslint-disable-line no-shadow
+
+ if (vm.skip) {
+ return;
+ }
+
+ // Clipping for Points.
+ if (chartArea === undefined || helpers$1.canvas._isPointInArea(vm, chartArea)) {
+ ctx.strokeStyle = vm.borderColor || defaultColor;
+ ctx.lineWidth = valueOrDefault$2(vm.borderWidth, globalDefaults.elements.point.borderWidth);
+ ctx.fillStyle = vm.backgroundColor || defaultColor;
+ helpers$1.canvas.drawPoint(ctx, pointStyle, radius, x, y, rotation);
+ }
+ }
+}); + +var defaultColor$2 = core_defaults.global.defaultColor;
+
+core_defaults._set('global', {
+ elements: {
+ rectangle: {
+ backgroundColor: defaultColor$2,
+ borderColor: defaultColor$2,
+ borderSkipped: 'bottom',
+ borderWidth: 0
+ }
+ }
+});
+
+function isVertical(vm) {
+ return vm && vm.width !== undefined;
+}
+
+/**
+ * Helper function to get the bounds of the bar regardless of the orientation
+ * @param bar {Chart.Element.Rectangle} the bar
+ * @return {Bounds} bounds of the bar
+ * @private
+ */
+function getBarBounds(vm) {
+ var x1, x2, y1, y2, half;
+
+ if (isVertical(vm)) {
+ half = vm.width / 2;
+ x1 = vm.x - half;
+ x2 = vm.x + half;
+ y1 = Math.min(vm.y, vm.base);
+ y2 = Math.max(vm.y, vm.base);
+ } else {
+ half = vm.height / 2;
+ x1 = Math.min(vm.x, vm.base);
+ x2 = Math.max(vm.x, vm.base);
+ y1 = vm.y - half;
+ y2 = vm.y + half;
+ }
+
+ return {
+ left: x1,
+ top: y1,
+ right: x2,
+ bottom: y2
+ };
+}
+
+function swap(orig, v1, v2) {
+ return orig === v1 ? v2 : orig === v2 ? v1 : orig;
+}
+
+function parseBorderSkipped(vm) {
+ var edge = vm.borderSkipped;
+ var res = {};
+
+ if (!edge) {
+ return res;
+ }
+
+ if (vm.horizontal) {
+ if (vm.base > vm.x) {
+ edge = swap(edge, 'left', 'right');
+ }
+ } else if (vm.base < vm.y) {
+ edge = swap(edge, 'bottom', 'top');
+ }
+
+ res[edge] = true;
+ return res;
+}
+
+function parseBorderWidth(vm, maxW, maxH) {
+ var value = vm.borderWidth;
+ var skip = parseBorderSkipped(vm);
+ var t, r, b, l;
+
+ if (helpers$1.isObject(value)) {
+ t = +value.top || 0;
+ r = +value.right || 0;
+ b = +value.bottom || 0;
+ l = +value.left || 0;
+ } else {
+ t = r = b = l = +value || 0;
+ }
+
+ return {
+ t: skip.top || (t < 0) ? 0 : t > maxH ? maxH : t,
+ r: skip.right || (r < 0) ? 0 : r > maxW ? maxW : r,
+ b: skip.bottom || (b < 0) ? 0 : b > maxH ? maxH : b,
+ l: skip.left || (l < 0) ? 0 : l > maxW ? maxW : l
+ };
+}
+
+function boundingRects(vm) {
+ var bounds = getBarBounds(vm);
+ var width = bounds.right - bounds.left;
+ var height = bounds.bottom - bounds.top;
+ var border = parseBorderWidth(vm, width / 2, height / 2);
+
+ return {
+ outer: {
+ x: bounds.left,
+ y: bounds.top,
+ w: width,
+ h: height
+ },
+ inner: {
+ x: bounds.left + border.l,
+ y: bounds.top + border.t,
+ w: width - border.l - border.r,
+ h: height - border.t - border.b
+ }
+ };
+}
+
+function inRange(vm, x, y) {
+ var skipX = x === null;
+ var skipY = y === null;
+ var bounds = !vm || (skipX && skipY) ? false : getBarBounds(vm);
+
+ return bounds
+ && (skipX || x >= bounds.left && x <= bounds.right)
+ && (skipY || y >= bounds.top && y <= bounds.bottom);
+}
+
+var element_rectangle = core_element.extend({
+ _type: 'rectangle',
+
+ draw: function() {
+ var ctx = this._chart.ctx;
+ var vm = this._view;
+ var rects = boundingRects(vm);
+ var outer = rects.outer;
+ var inner = rects.inner;
+
+ ctx.fillStyle = vm.backgroundColor;
+ ctx.fillRect(outer.x, outer.y, outer.w, outer.h);
+
+ if (outer.w === inner.w && outer.h === inner.h) {
+ return;
+ }
+
+ ctx.save();
+ ctx.beginPath();
+ ctx.rect(outer.x, outer.y, outer.w, outer.h);
+ ctx.clip();
+ ctx.fillStyle = vm.borderColor;
+ ctx.rect(inner.x, inner.y, inner.w, inner.h);
+ ctx.fill('evenodd');
+ ctx.restore();
+ },
+
+ height: function() {
+ var vm = this._view;
+ return vm.base - vm.y;
+ },
+
+ inRange: function(mouseX, mouseY) {
+ return inRange(this._view, mouseX, mouseY);
+ },
+
+ inLabelRange: function(mouseX, mouseY) {
+ var vm = this._view;
+ return isVertical(vm)
+ ? inRange(vm, mouseX, null)
+ : inRange(vm, null, mouseY);
+ },
+
+ inXRange: function(mouseX) {
+ return inRange(this._view, mouseX, null);
+ },
+
+ inYRange: function(mouseY) {
+ return inRange(this._view, null, mouseY);
+ },
+
+ getCenterPoint: function() {
+ var vm = this._view;
+ var x, y;
+ if (isVertical(vm)) {
+ x = vm.x;
+ y = (vm.y + vm.base) / 2;
+ } else {
+ x = (vm.x + vm.base) / 2;
+ y = vm.y;
+ }
+
+ return {x: x, y: y};
+ },
+
+ getArea: function() {
+ var vm = this._view;
+
+ return isVertical(vm)
+ ? vm.width * Math.abs(vm.y - vm.base)
+ : vm.height * Math.abs(vm.x - vm.base);
+ },
+
+ tooltipPosition: function() {
+ var vm = this._view;
+ return {
+ x: vm.x,
+ y: vm.y
+ };
+ }
+}); + +var elements = {};
+var Arc = element_arc;
+var Line = element_line;
+var Point = element_point;
+var Rectangle = element_rectangle; +elements.Arc = Arc; +elements.Line = Line; +elements.Point = Point; +elements.Rectangle = Rectangle; + +var deprecated = helpers$1._deprecated;
+var valueOrDefault$3 = helpers$1.valueOrDefault;
+
+core_defaults._set('bar', {
+ hover: {
+ mode: 'label'
+ },
+
+ scales: {
+ xAxes: [{
+ type: 'category',
+ offset: true,
+ gridLines: {
+ offsetGridLines: true
+ }
+ }],
+
+ yAxes: [{
+ type: 'linear'
+ }]
+ }
+});
+
+core_defaults._set('global', {
+ datasets: {
+ bar: {
+ categoryPercentage: 0.8,
+ barPercentage: 0.9
+ }
+ }
+});
+
+/**
+ * Computes the "optimal" sample size to maintain bars equally sized while preventing overlap.
+ * @private
+ */
+function computeMinSampleSize(scale, pixels) {
+ var min = scale._length;
+ var prev, curr, i, ilen;
+
+ for (i = 1, ilen = pixels.length; i < ilen; ++i) {
+ min = Math.min(min, Math.abs(pixels[i] - pixels[i - 1]));
+ }
+
+ for (i = 0, ilen = scale.getTicks().length; i < ilen; ++i) {
+ curr = scale.getPixelForTick(i);
+ min = i > 0 ? Math.min(min, Math.abs(curr - prev)) : min;
+ prev = curr;
+ }
+
+ return min;
+}
+
+/**
+ * Computes an "ideal" category based on the absolute bar thickness or, if undefined or null,
+ * uses the smallest interval (see computeMinSampleSize) that prevents bar overlapping. This
+ * mode currently always generates bars equally sized (until we introduce scriptable options?).
+ * @private
+ */
+function computeFitCategoryTraits(index, ruler, options) {
+ var thickness = options.barThickness;
+ var count = ruler.stackCount;
+ var curr = ruler.pixels[index];
+ var min = helpers$1.isNullOrUndef(thickness)
+ ? computeMinSampleSize(ruler.scale, ruler.pixels)
+ : -1;
+ var size, ratio;
+
+ if (helpers$1.isNullOrUndef(thickness)) {
+ size = min * options.categoryPercentage;
+ ratio = options.barPercentage;
+ } else {
+ // When bar thickness is enforced, category and bar percentages are ignored.
+ // Note(SB): we could add support for relative bar thickness (e.g. barThickness: '50%')
+ // and deprecate barPercentage since this value is ignored when thickness is absolute.
+ size = thickness * count;
+ ratio = 1;
+ }
+
+ return {
+ chunk: size / count,
+ ratio: ratio,
+ start: curr - (size / 2)
+ };
+}
+
+/**
+ * Computes an "optimal" category that globally arranges bars side by side (no gap when
+ * percentage options are 1), based on the previous and following categories. This mode
+ * generates bars with different widths when data are not evenly spaced.
+ * @private
+ */
+function computeFlexCategoryTraits(index, ruler, options) {
+ var pixels = ruler.pixels;
+ var curr = pixels[index];
+ var prev = index > 0 ? pixels[index - 1] : null;
+ var next = index < pixels.length - 1 ? pixels[index + 1] : null;
+ var percent = options.categoryPercentage;
+ var start, size;
+
+ if (prev === null) {
+ // first data: its size is double based on the next point or,
+ // if it's also the last data, we use the scale size.
+ prev = curr - (next === null ? ruler.end - ruler.start : next - curr);
+ }
+
+ if (next === null) {
+ // last data: its size is also double based on the previous point.
+ next = curr + curr - prev;
+ }
+
+ start = curr - (curr - Math.min(prev, next)) / 2 * percent;
+ size = Math.abs(next - prev) / 2 * percent;
+
+ return {
+ chunk: size / ruler.stackCount,
+ ratio: options.barPercentage,
+ start: start
+ };
+}
+
+var controller_bar = core_datasetController.extend({
+
+ dataElementType: elements.Rectangle,
+
+ /**
+ * @private
+ */
+ _dataElementOptions: [
+ 'backgroundColor',
+ 'borderColor',
+ 'borderSkipped',
+ 'borderWidth',
+ 'barPercentage',
+ 'barThickness',
+ 'categoryPercentage',
+ 'maxBarThickness',
+ 'minBarLength'
+ ],
+
+ initialize: function() {
+ var me = this;
+ var meta, scaleOpts;
+
+ core_datasetController.prototype.initialize.apply(me, arguments);
+
+ meta = me.getMeta();
+ meta.stack = me.getDataset().stack;
+ meta.bar = true;
+
+ scaleOpts = me._getIndexScale().options;
+ deprecated('bar chart', scaleOpts.barPercentage, 'scales.[x/y]Axes.barPercentage', 'dataset.barPercentage');
+ deprecated('bar chart', scaleOpts.barThickness, 'scales.[x/y]Axes.barThickness', 'dataset.barThickness');
+ deprecated('bar chart', scaleOpts.categoryPercentage, 'scales.[x/y]Axes.categoryPercentage', 'dataset.categoryPercentage');
+ deprecated('bar chart', me._getValueScale().options.minBarLength, 'scales.[x/y]Axes.minBarLength', 'dataset.minBarLength');
+ deprecated('bar chart', scaleOpts.maxBarThickness, 'scales.[x/y]Axes.maxBarThickness', 'dataset.maxBarThickness');
+ },
+
+ update: function(reset) {
+ var me = this;
+ var rects = me.getMeta().data;
+ var i, ilen;
+
+ me._ruler = me.getRuler();
+
+ for (i = 0, ilen = rects.length; i < ilen; ++i) {
+ me.updateElement(rects[i], i, reset);
+ }
+ },
+
+ updateElement: function(rectangle, index, reset) {
+ var me = this;
+ var meta = me.getMeta();
+ var dataset = me.getDataset();
+ var options = me._resolveDataElementOptions(rectangle, index);
+
+ rectangle._xScale = me.getScaleForId(meta.xAxisID);
+ rectangle._yScale = me.getScaleForId(meta.yAxisID);
+ rectangle._datasetIndex = me.index;
+ rectangle._index = index;
+ rectangle._model = {
+ backgroundColor: options.backgroundColor,
+ borderColor: options.borderColor,
+ borderSkipped: options.borderSkipped,
+ borderWidth: options.borderWidth,
+ datasetLabel: dataset.label,
+ label: me.chart.data.labels[index]
+ };
+
+ if (helpers$1.isArray(dataset.data[index])) {
+ rectangle._model.borderSkipped = null;
+ }
+
+ me._updateElementGeometry(rectangle, index, reset, options);
+
+ rectangle.pivot();
+ },
+
+ /**
+ * @private
+ */
+ _updateElementGeometry: function(rectangle, index, reset, options) {
+ var me = this;
+ var model = rectangle._model;
+ var vscale = me._getValueScale();
+ var base = vscale.getBasePixel();
+ var horizontal = vscale.isHorizontal();
+ var ruler = me._ruler || me.getRuler();
+ var vpixels = me.calculateBarValuePixels(me.index, index, options);
+ var ipixels = me.calculateBarIndexPixels(me.index, index, ruler, options);
+
+ model.horizontal = horizontal;
+ model.base = reset ? base : vpixels.base;
+ model.x = horizontal ? reset ? base : vpixels.head : ipixels.center;
+ model.y = horizontal ? ipixels.center : reset ? base : vpixels.head;
+ model.height = horizontal ? ipixels.size : undefined;
+ model.width = horizontal ? undefined : ipixels.size;
+ },
+
+ /**
+ * Returns the stacks based on groups and bar visibility.
+ * @param {number} [last] - The dataset index
+ * @returns {string[]} The list of stack IDs
+ * @private
+ */
+ _getStacks: function(last) {
+ var me = this;
+ var scale = me._getIndexScale();
+ var metasets = scale._getMatchingVisibleMetas(me._type);
+ var stacked = scale.options.stacked;
+ var ilen = metasets.length;
+ var stacks = [];
+ var i, meta;
+
+ for (i = 0; i < ilen; ++i) {
+ meta = metasets[i];
+ // stacked | meta.stack
+ // | found | not found | undefined
+ // false | x | x | x
+ // true | | x |
+ // undefined | | x | x
+ if (stacked === false || stacks.indexOf(meta.stack) === -1 ||
+ (stacked === undefined && meta.stack === undefined)) {
+ stacks.push(meta.stack);
+ }
+ if (meta.index === last) {
+ break;
+ }
+ }
+
+ return stacks;
+ },
+
+ /**
+ * Returns the effective number of stacks based on groups and bar visibility.
+ * @private
+ */
+ getStackCount: function() {
+ return this._getStacks().length;
+ },
+
+ /**
+ * Returns the stack index for the given dataset based on groups and bar visibility.
+ * @param {number} [datasetIndex] - The dataset index
+ * @param {string} [name] - The stack name to find
+ * @returns {number} The stack index
+ * @private
+ */
+ getStackIndex: function(datasetIndex, name) {
+ var stacks = this._getStacks(datasetIndex);
+ var index = (name !== undefined)
+ ? stacks.indexOf(name)
+ : -1; // indexOf returns -1 if element is not present
+
+ return (index === -1)
+ ? stacks.length - 1
+ : index;
+ },
+
+ /**
+ * @private
+ */
+ getRuler: function() {
+ var me = this;
+ var scale = me._getIndexScale();
+ var pixels = [];
+ var i, ilen;
+
+ for (i = 0, ilen = me.getMeta().data.length; i < ilen; ++i) {
+ pixels.push(scale.getPixelForValue(null, i, me.index));
+ }
+
+ return {
+ pixels: pixels,
+ start: scale._startPixel,
+ end: scale._endPixel,
+ stackCount: me.getStackCount(),
+ scale: scale
+ };
+ },
+
+ /**
+ * Note: pixel values are not clamped to the scale area.
+ * @private
+ */
+ calculateBarValuePixels: function(datasetIndex, index, options) {
+ var me = this;
+ var chart = me.chart;
+ var scale = me._getValueScale();
+ var isHorizontal = scale.isHorizontal();
+ var datasets = chart.data.datasets;
+ var metasets = scale._getMatchingVisibleMetas(me._type);
+ var value = scale._parseValue(datasets[datasetIndex].data[index]);
+ var minBarLength = options.minBarLength;
+ var stacked = scale.options.stacked;
+ var stack = me.getMeta().stack;
+ var start = value.start === undefined ? 0 : value.max >= 0 && value.min >= 0 ? value.min : value.max;
+ var length = value.start === undefined ? value.end : value.max >= 0 && value.min >= 0 ? value.max - value.min : value.min - value.max;
+ var ilen = metasets.length;
+ var i, imeta, ivalue, base, head, size, stackLength;
+
+ if (stacked || (stacked === undefined && stack !== undefined)) {
+ for (i = 0; i < ilen; ++i) {
+ imeta = metasets[i];
+
+ if (imeta.index === datasetIndex) {
+ break;
+ }
+
+ if (imeta.stack === stack) {
+ stackLength = scale._parseValue(datasets[imeta.index].data[index]);
+ ivalue = stackLength.start === undefined ? stackLength.end : stackLength.min >= 0 && stackLength.max >= 0 ? stackLength.max : stackLength.min;
+
+ if ((value.min < 0 && ivalue < 0) || (value.max >= 0 && ivalue > 0)) {
+ start += ivalue;
+ }
+ }
+ }
+ }
+
+ base = scale.getPixelForValue(start);
+ head = scale.getPixelForValue(start + length);
+ size = head - base;
+
+ if (minBarLength !== undefined && Math.abs(size) < minBarLength) {
+ size = minBarLength;
+ if (length >= 0 && !isHorizontal || length < 0 && isHorizontal) {
+ head = base - minBarLength;
+ } else {
+ head = base + minBarLength;
+ }
+ }
+
+ return {
+ size: size,
+ base: base,
+ head: head,
+ center: head + size / 2
+ };
+ },
+
+ /**
+ * @private
+ */
+ calculateBarIndexPixels: function(datasetIndex, index, ruler, options) {
+ var me = this;
+ var range = options.barThickness === 'flex'
+ ? computeFlexCategoryTraits(index, ruler, options)
+ : computeFitCategoryTraits(index, ruler, options);
+
+ var stackIndex = me.getStackIndex(datasetIndex, me.getMeta().stack);
+ var center = range.start + (range.chunk * stackIndex) + (range.chunk / 2);
+ var size = Math.min(
+ valueOrDefault$3(options.maxBarThickness, Infinity),
+ range.chunk * range.ratio);
+
+ return {
+ base: center - size / 2,
+ head: center + size / 2,
+ center: center,
+ size: size
+ };
+ },
+
+ draw: function() {
+ var me = this;
+ var chart = me.chart;
+ var scale = me._getValueScale();
+ var rects = me.getMeta().data;
+ var dataset = me.getDataset();
+ var ilen = rects.length;
+ var i = 0;
+
+ helpers$1.canvas.clipArea(chart.ctx, chart.chartArea);
+
+ for (; i < ilen; ++i) {
+ var val = scale._parseValue(dataset.data[i]);
+ if (!isNaN(val.min) && !isNaN(val.max)) {
+ rects[i].draw();
+ }
+ }
+
+ helpers$1.canvas.unclipArea(chart.ctx);
+ },
+
+ /**
+ * @private
+ */
+ _resolveDataElementOptions: function() {
+ var me = this;
+ var values = helpers$1.extend({}, core_datasetController.prototype._resolveDataElementOptions.apply(me, arguments));
+ var indexOpts = me._getIndexScale().options;
+ var valueOpts = me._getValueScale().options;
+
+ values.barPercentage = valueOrDefault$3(indexOpts.barPercentage, values.barPercentage);
+ values.barThickness = valueOrDefault$3(indexOpts.barThickness, values.barThickness);
+ values.categoryPercentage = valueOrDefault$3(indexOpts.categoryPercentage, values.categoryPercentage);
+ values.maxBarThickness = valueOrDefault$3(indexOpts.maxBarThickness, values.maxBarThickness);
+ values.minBarLength = valueOrDefault$3(valueOpts.minBarLength, values.minBarLength);
+
+ return values;
+ }
+
+}); + +var valueOrDefault$4 = helpers$1.valueOrDefault;
+var resolve$1 = helpers$1.options.resolve;
+
+core_defaults._set('bubble', {
+ hover: {
+ mode: 'single'
+ },
+
+ scales: {
+ xAxes: [{
+ type: 'linear', // bubble should probably use a linear scale by default
+ position: 'bottom',
+ id: 'x-axis-0' // need an ID so datasets can reference the scale
+ }],
+ yAxes: [{
+ type: 'linear',
+ position: 'left',
+ id: 'y-axis-0'
+ }]
+ },
+
+ tooltips: {
+ callbacks: {
+ title: function() {
+ // Title doesn't make sense for scatter since we format the data as a point
+ return '';
+ },
+ label: function(item, data) {
+ var datasetLabel = data.datasets[item.datasetIndex].label || '';
+ var dataPoint = data.datasets[item.datasetIndex].data[item.index];
+ return datasetLabel + ': (' + item.xLabel + ', ' + item.yLabel + ', ' + dataPoint.r + ')';
+ }
+ }
+ }
+});
+
+var controller_bubble = core_datasetController.extend({
+ /**
+ * @protected
+ */
+ dataElementType: elements.Point,
+
+ /**
+ * @private
+ */
+ _dataElementOptions: [
+ 'backgroundColor',
+ 'borderColor',
+ 'borderWidth',
+ 'hoverBackgroundColor',
+ 'hoverBorderColor',
+ 'hoverBorderWidth',
+ 'hoverRadius',
+ 'hitRadius',
+ 'pointStyle',
+ 'rotation'
+ ],
+
+ /**
+ * @protected
+ */
+ update: function(reset) {
+ var me = this;
+ var meta = me.getMeta();
+ var points = meta.data;
+
+ // Update Points
+ helpers$1.each(points, function(point, index) {
+ me.updateElement(point, index, reset);
+ });
+ },
+
+ /**
+ * @protected
+ */
+ updateElement: function(point, index, reset) {
+ var me = this;
+ var meta = me.getMeta();
+ var custom = point.custom || {};
+ var xScale = me.getScaleForId(meta.xAxisID);
+ var yScale = me.getScaleForId(meta.yAxisID);
+ var options = me._resolveDataElementOptions(point, index);
+ var data = me.getDataset().data[index];
+ var dsIndex = me.index;
+
+ var x = reset ? xScale.getPixelForDecimal(0.5) : xScale.getPixelForValue(typeof data === 'object' ? data : NaN, index, dsIndex);
+ var y = reset ? yScale.getBasePixel() : yScale.getPixelForValue(data, index, dsIndex);
+
+ point._xScale = xScale;
+ point._yScale = yScale;
+ point._options = options;
+ point._datasetIndex = dsIndex;
+ point._index = index;
+ point._model = {
+ backgroundColor: options.backgroundColor,
+ borderColor: options.borderColor,
+ borderWidth: options.borderWidth,
+ hitRadius: options.hitRadius,
+ pointStyle: options.pointStyle,
+ rotation: options.rotation,
+ radius: reset ? 0 : options.radius,
+ skip: custom.skip || isNaN(x) || isNaN(y),
+ x: x,
+ y: y,
+ };
+
+ point.pivot();
+ },
+
+ /**
+ * @protected
+ */
+ setHoverStyle: function(point) {
+ var model = point._model;
+ var options = point._options;
+ var getHoverColor = helpers$1.getHoverColor;
+
+ point.$previousStyle = {
+ backgroundColor: model.backgroundColor,
+ borderColor: model.borderColor,
+ borderWidth: model.borderWidth,
+ radius: model.radius
+ };
+
+ model.backgroundColor = valueOrDefault$4(options.hoverBackgroundColor, getHoverColor(options.backgroundColor));
+ model.borderColor = valueOrDefault$4(options.hoverBorderColor, getHoverColor(options.borderColor));
+ model.borderWidth = valueOrDefault$4(options.hoverBorderWidth, options.borderWidth);
+ model.radius = options.radius + options.hoverRadius;
+ },
+
+ /**
+ * @private
+ */
+ _resolveDataElementOptions: function(point, index) {
+ var me = this;
+ var chart = me.chart;
+ var dataset = me.getDataset();
+ var custom = point.custom || {};
+ var data = dataset.data[index] || {};
+ var values = core_datasetController.prototype._resolveDataElementOptions.apply(me, arguments);
+
+ // Scriptable options
+ var context = {
+ chart: chart,
+ dataIndex: index,
+ dataset: dataset,
+ datasetIndex: me.index
+ };
+
+ // In case values were cached (and thus frozen), we need to clone the values
+ if (me._cachedDataOpts === values) {
+ values = helpers$1.extend({}, values);
+ }
+
+ // Custom radius resolution
+ values.radius = resolve$1([
+ custom.radius,
+ data.r,
+ me._config.radius,
+ chart.options.elements.point.radius
+ ], context, index);
+
+ return values;
+ }
+}); + +var valueOrDefault$5 = helpers$1.valueOrDefault;
+
+var PI$1 = Math.PI;
+var DOUBLE_PI$1 = PI$1 * 2;
+var HALF_PI$1 = PI$1 / 2;
+
+core_defaults._set('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
+ },
+ hover: {
+ mode: 'single'
+ },
+ legendCallback: function(chart) {
+ var list = document.createElement('ul');
+ var data = chart.data;
+ var datasets = data.datasets;
+ var labels = data.labels;
+ var i, ilen, listItem, listItemSpan;
+
+ list.setAttribute('class', chart.id + '-legend');
+ if (datasets.length) {
+ for (i = 0, ilen = datasets[0].data.length; i < ilen; ++i) {
+ listItem = list.appendChild(document.createElement('li'));
+ listItemSpan = listItem.appendChild(document.createElement('span'));
+ listItemSpan.style.backgroundColor = datasets[0].backgroundColor[i];
+ if (labels[i]) {
+ listItem.appendChild(document.createTextNode(labels[i]));
+ }
+ }
+ }
+
+ return list.outerHTML;
+ },
+ legend: {
+ labels: {
+ generateLabels: function(chart) {
+ var data = chart.data;
+ if (data.labels.length && data.datasets.length) {
+ return data.labels.map(function(label, i) {
+ var meta = chart.getDatasetMeta(0);
+ var style = meta.controller.getStyle(i);
+
+ return {
+ text: label,
+ fillStyle: style.backgroundColor,
+ strokeStyle: style.borderColor,
+ lineWidth: style.borderWidth,
+ hidden: isNaN(data.datasets[0].data[i]) || meta.data[i].hidden,
+
+ // Extra data used for toggling the correct item
+ index: i
+ };
+ });
+ }
+ return [];
+ }
+ },
+
+ onClick: function(e, legendItem) {
+ var index = legendItem.index;
+ var chart = this.chart;
+ var i, ilen, meta;
+
+ for (i = 0, ilen = (chart.data.datasets || []).length; i < ilen; ++i) {
+ meta = chart.getDatasetMeta(i);
+ // toggle visibility of index if exists
+ if (meta.data[index]) {
+ meta.data[index].hidden = !meta.data[index].hidden;
+ }
+ }
+
+ chart.update();
+ }
+ },
+
+ // The percentage of the chart that we cut out of the middle.
+ cutoutPercentage: 50,
+
+ // The rotation of the chart, where the first data arc begins.
+ rotation: -HALF_PI$1,
+
+ // The total circumference of the chart.
+ circumference: DOUBLE_PI$1,
+
+ // Need to override these to give a nice default
+ tooltips: {
+ callbacks: {
+ title: function() {
+ return '';
+ },
+ label: function(tooltipItem, data) {
+ var dataLabel = data.labels[tooltipItem.index];
+ var value = ': ' + data.datasets[tooltipItem.datasetIndex].data[tooltipItem.index];
+
+ if (helpers$1.isArray(dataLabel)) {
+ // show value on first line of multiline label
+ // need to clone because we are changing the value
+ dataLabel = dataLabel.slice();
+ dataLabel[0] += value;
+ } else {
+ dataLabel += value;
+ }
+
+ return dataLabel;
+ }
+ }
+ }
+});
+
+var controller_doughnut = core_datasetController.extend({
+
+ dataElementType: elements.Arc,
+
+ linkScales: helpers$1.noop,
+
+ /**
+ * @private
+ */
+ _dataElementOptions: [
+ 'backgroundColor',
+ 'borderColor',
+ 'borderWidth',
+ 'borderAlign',
+ 'hoverBackgroundColor',
+ 'hoverBorderColor',
+ 'hoverBorderWidth',
+ ],
+
+ // Get index of the dataset in relation to the visible datasets. This allows determining the inner and outer radius correctly
+ getRingIndex: function(datasetIndex) {
+ var ringIndex = 0;
+
+ for (var j = 0; j < datasetIndex; ++j) {
+ if (this.chart.isDatasetVisible(j)) {
+ ++ringIndex;
+ }
+ }
+
+ return ringIndex;
+ },
+
+ update: function(reset) {
+ var me = this;
+ var chart = me.chart;
+ var chartArea = chart.chartArea;
+ var opts = chart.options;
+ var ratioX = 1;
+ var ratioY = 1;
+ var offsetX = 0;
+ var offsetY = 0;
+ var meta = me.getMeta();
+ var arcs = meta.data;
+ var cutout = opts.cutoutPercentage / 100 || 0;
+ var circumference = opts.circumference;
+ var chartWeight = me._getRingWeight(me.index);
+ var maxWidth, maxHeight, i, ilen;
+
+ // If the chart's circumference isn't a full circle, calculate size as a ratio of the width/height of the arc
+ if (circumference < DOUBLE_PI$1) {
+ var startAngle = opts.rotation % DOUBLE_PI$1;
+ startAngle += startAngle >= PI$1 ? -DOUBLE_PI$1 : startAngle < -PI$1 ? DOUBLE_PI$1 : 0;
+ var endAngle = startAngle + circumference;
+ var startX = Math.cos(startAngle);
+ var startY = Math.sin(startAngle);
+ var endX = Math.cos(endAngle);
+ var endY = Math.sin(endAngle);
+ var contains0 = (startAngle <= 0 && endAngle >= 0) || endAngle >= DOUBLE_PI$1;
+ var contains90 = (startAngle <= HALF_PI$1 && endAngle >= HALF_PI$1) || endAngle >= DOUBLE_PI$1 + HALF_PI$1;
+ var contains180 = startAngle === -PI$1 || endAngle >= PI$1;
+ var contains270 = (startAngle <= -HALF_PI$1 && endAngle >= -HALF_PI$1) || endAngle >= PI$1 + HALF_PI$1;
+ var minX = contains180 ? -1 : Math.min(startX, startX * cutout, endX, endX * cutout);
+ var minY = contains270 ? -1 : Math.min(startY, startY * cutout, endY, endY * cutout);
+ var maxX = contains0 ? 1 : Math.max(startX, startX * cutout, endX, endX * cutout);
+ var maxY = contains90 ? 1 : Math.max(startY, startY * cutout, endY, endY * cutout);
+ ratioX = (maxX - minX) / 2;
+ ratioY = (maxY - minY) / 2;
+ offsetX = -(maxX + minX) / 2;
+ offsetY = -(maxY + minY) / 2;
+ }
+
+ for (i = 0, ilen = arcs.length; i < ilen; ++i) {
+ arcs[i]._options = me._resolveDataElementOptions(arcs[i], i);
+ }
+
+ chart.borderWidth = me.getMaxBorderWidth();
+ maxWidth = (chartArea.right - chartArea.left - chart.borderWidth) / ratioX;
+ maxHeight = (chartArea.bottom - chartArea.top - chart.borderWidth) / ratioY;
+ chart.outerRadius = Math.max(Math.min(maxWidth, maxHeight) / 2, 0);
+ chart.innerRadius = Math.max(chart.outerRadius * cutout, 0);
+ chart.radiusLength = (chart.outerRadius - chart.innerRadius) / (me._getVisibleDatasetWeightTotal() || 1);
+ chart.offsetX = offsetX * chart.outerRadius;
+ chart.offsetY = offsetY * chart.outerRadius;
+
+ meta.total = me.calculateTotal();
+
+ me.outerRadius = chart.outerRadius - chart.radiusLength * me._getRingWeightOffset(me.index);
+ me.innerRadius = Math.max(me.outerRadius - chart.radiusLength * chartWeight, 0);
+
+ for (i = 0, ilen = arcs.length; i < ilen; ++i) {
+ me.updateElement(arcs[i], i, reset);
+ }
+ },
+
+ updateElement: function(arc, index, reset) {
+ var me = this;
+ var chart = me.chart;
+ var chartArea = chart.chartArea;
+ var opts = chart.options;
+ var animationOpts = opts.animation;
+ var centerX = (chartArea.left + chartArea.right) / 2;
+ var centerY = (chartArea.top + chartArea.bottom) / 2;
+ var startAngle = opts.rotation; // non reset case handled later
+ var endAngle = opts.rotation; // non reset case handled later
+ var dataset = me.getDataset();
+ var circumference = reset && animationOpts.animateRotate ? 0 : arc.hidden ? 0 : me.calculateCircumference(dataset.data[index]) * (opts.circumference / DOUBLE_PI$1);
+ var innerRadius = reset && animationOpts.animateScale ? 0 : me.innerRadius;
+ var outerRadius = reset && animationOpts.animateScale ? 0 : me.outerRadius;
+ var options = arc._options || {};
+
+ helpers$1.extend(arc, {
+ // Utility
+ _datasetIndex: me.index,
+ _index: index,
+
+ // Desired view properties
+ _model: {
+ backgroundColor: options.backgroundColor,
+ borderColor: options.borderColor,
+ borderWidth: options.borderWidth,
+ borderAlign: options.borderAlign,
+ x: centerX + chart.offsetX,
+ y: centerY + chart.offsetY,
+ startAngle: startAngle,
+ endAngle: endAngle,
+ circumference: circumference,
+ outerRadius: outerRadius,
+ innerRadius: innerRadius,
+ label: helpers$1.valueAtIndexOrDefault(dataset.label, index, chart.data.labels[index])
+ }
+ });
+
+ var model = arc._model;
+
+ // Set correct angles if not resetting
+ if (!reset || !animationOpts.animateRotate) {
+ if (index === 0) {
+ model.startAngle = opts.rotation;
+ } else {
+ model.startAngle = me.getMeta().data[index - 1]._model.endAngle;
+ }
+
+ model.endAngle = model.startAngle + model.circumference;
+ }
+
+ arc.pivot();
+ },
+
+ calculateTotal: function() {
+ var dataset = this.getDataset();
+ var meta = this.getMeta();
+ var total = 0;
+ var value;
+
+ helpers$1.each(meta.data, function(element, index) {
+ value = dataset.data[index];
+ if (!isNaN(value) && !element.hidden) {
+ total += Math.abs(value);
+ }
+ });
+
+ /* if (total === 0) {
+ total = NaN;
+ }*/
+
+ return total;
+ },
+
+ calculateCircumference: function(value) {
+ var total = this.getMeta().total;
+ if (total > 0 && !isNaN(value)) {
+ return DOUBLE_PI$1 * (Math.abs(value) / total);
+ }
+ return 0;
+ },
+
+ // gets the max border or hover width to properly scale pie charts
+ getMaxBorderWidth: function(arcs) {
+ var me = this;
+ var max = 0;
+ var chart = me.chart;
+ var i, ilen, meta, arc, controller, options, borderWidth, hoverWidth;
+
+ if (!arcs) {
+ // Find the outmost visible dataset
+ for (i = 0, ilen = chart.data.datasets.length; i < ilen; ++i) {
+ if (chart.isDatasetVisible(i)) {
+ meta = chart.getDatasetMeta(i);
+ arcs = meta.data;
+ if (i !== me.index) {
+ controller = meta.controller;
+ }
+ break;
+ }
+ }
+ }
+
+ if (!arcs) {
+ return 0;
+ }
+
+ for (i = 0, ilen = arcs.length; i < ilen; ++i) {
+ arc = arcs[i];
+ if (controller) {
+ controller._configure();
+ options = controller._resolveDataElementOptions(arc, i);
+ } else {
+ options = arc._options;
+ }
+ if (options.borderAlign !== 'inner') {
+ borderWidth = options.borderWidth;
+ hoverWidth = options.hoverBorderWidth;
+
+ max = borderWidth > max ? borderWidth : max;
+ max = hoverWidth > max ? hoverWidth : max;
+ }
+ }
+ return max;
+ },
+
+ /**
+ * @protected
+ */
+ setHoverStyle: function(arc) {
+ var model = arc._model;
+ var options = arc._options;
+ var getHoverColor = helpers$1.getHoverColor;
+
+ arc.$previousStyle = {
+ backgroundColor: model.backgroundColor,
+ borderColor: model.borderColor,
+ borderWidth: model.borderWidth,
+ };
+
+ model.backgroundColor = valueOrDefault$5(options.hoverBackgroundColor, getHoverColor(options.backgroundColor));
+ model.borderColor = valueOrDefault$5(options.hoverBorderColor, getHoverColor(options.borderColor));
+ model.borderWidth = valueOrDefault$5(options.hoverBorderWidth, options.borderWidth);
+ },
+
+ /**
+ * Get radius length offset of the dataset in relation to the visible datasets weights. This allows determining the inner and outer radius correctly
+ * @private
+ */
+ _getRingWeightOffset: function(datasetIndex) {
+ var ringWeightOffset = 0;
+
+ for (var i = 0; i < datasetIndex; ++i) {
+ if (this.chart.isDatasetVisible(i)) {
+ ringWeightOffset += this._getRingWeight(i);
+ }
+ }
+
+ return ringWeightOffset;
+ },
+
+ /**
+ * @private
+ */
+ _getRingWeight: function(dataSetIndex) {
+ return Math.max(valueOrDefault$5(this.chart.data.datasets[dataSetIndex].weight, 1), 0);
+ },
+
+ /**
+ * Returns the sum of all visibile data set weights. This value can be 0.
+ * @private
+ */
+ _getVisibleDatasetWeightTotal: function() {
+ return this._getRingWeightOffset(this.chart.data.datasets.length);
+ }
+}); + +core_defaults._set('horizontalBar', {
+ hover: {
+ mode: 'index',
+ axis: 'y'
+ },
+
+ scales: {
+ xAxes: [{
+ type: 'linear',
+ position: 'bottom'
+ }],
+
+ yAxes: [{
+ type: 'category',
+ position: 'left',
+ offset: true,
+ gridLines: {
+ offsetGridLines: true
+ }
+ }]
+ },
+
+ elements: {
+ rectangle: {
+ borderSkipped: 'left'
+ }
+ },
+
+ tooltips: {
+ mode: 'index',
+ axis: 'y'
+ }
+});
+
+core_defaults._set('global', {
+ datasets: {
+ horizontalBar: {
+ categoryPercentage: 0.8,
+ barPercentage: 0.9
+ }
+ }
+});
+
+var controller_horizontalBar = controller_bar.extend({
+ /**
+ * @private
+ */
+ _getValueScaleId: function() {
+ return this.getMeta().xAxisID;
+ },
+
+ /**
+ * @private
+ */
+ _getIndexScaleId: function() {
+ return this.getMeta().yAxisID;
+ }
+}); + +var valueOrDefault$6 = helpers$1.valueOrDefault;
+var resolve$2 = helpers$1.options.resolve;
+var isPointInArea = helpers$1.canvas._isPointInArea;
+
+core_defaults._set('line', {
+ showLines: true,
+ spanGaps: false,
+
+ hover: {
+ mode: 'label'
+ },
+
+ scales: {
+ xAxes: [{
+ type: 'category',
+ id: 'x-axis-0'
+ }],
+ yAxes: [{
+ type: 'linear',
+ id: 'y-axis-0'
+ }]
+ }
+});
+
+function scaleClip(scale, halfBorderWidth) {
+ var tickOpts = scale && scale.options.ticks || {};
+ var reverse = tickOpts.reverse;
+ var min = tickOpts.min === undefined ? halfBorderWidth : 0;
+ var max = tickOpts.max === undefined ? halfBorderWidth : 0;
+ return {
+ start: reverse ? max : min,
+ end: reverse ? min : max
+ };
+}
+
+function defaultClip(xScale, yScale, borderWidth) {
+ var halfBorderWidth = borderWidth / 2;
+ var x = scaleClip(xScale, halfBorderWidth);
+ var y = scaleClip(yScale, halfBorderWidth);
+
+ return {
+ top: y.end,
+ right: x.end,
+ bottom: y.start,
+ left: x.start
+ };
+}
+
+function toClip(value) {
+ var t, r, b, l;
+
+ if (helpers$1.isObject(value)) {
+ t = value.top;
+ r = value.right;
+ b = value.bottom;
+ l = value.left;
+ } else {
+ t = r = b = l = value;
+ }
+
+ return {
+ top: t,
+ right: r,
+ bottom: b,
+ left: l
+ };
+}
+
+
+var controller_line = core_datasetController.extend({
+
+ datasetElementType: elements.Line,
+
+ dataElementType: elements.Point,
+
+ /**
+ * @private
+ */
+ _datasetElementOptions: [
+ 'backgroundColor',
+ 'borderCapStyle',
+ 'borderColor',
+ 'borderDash',
+ 'borderDashOffset',
+ 'borderJoinStyle',
+ 'borderWidth',
+ 'cubicInterpolationMode',
+ 'fill'
+ ],
+
+ /**
+ * @private
+ */
+ _dataElementOptions: {
+ backgroundColor: 'pointBackgroundColor',
+ borderColor: 'pointBorderColor',
+ borderWidth: 'pointBorderWidth',
+ hitRadius: 'pointHitRadius',
+ hoverBackgroundColor: 'pointHoverBackgroundColor',
+ hoverBorderColor: 'pointHoverBorderColor',
+ hoverBorderWidth: 'pointHoverBorderWidth',
+ hoverRadius: 'pointHoverRadius',
+ pointStyle: 'pointStyle',
+ radius: 'pointRadius',
+ rotation: 'pointRotation'
+ },
+
+ update: function(reset) {
+ var me = this;
+ var meta = me.getMeta();
+ var line = meta.dataset;
+ var points = meta.data || [];
+ var options = me.chart.options;
+ var config = me._config;
+ var showLine = me._showLine = valueOrDefault$6(config.showLine, options.showLines);
+ var i, ilen;
+
+ me._xScale = me.getScaleForId(meta.xAxisID);
+ me._yScale = me.getScaleForId(meta.yAxisID);
+
+ // Update Line
+ if (showLine) {
+ // Compatibility: If the properties are defined with only the old name, use those values
+ if (config.tension !== undefined && config.lineTension === undefined) {
+ config.lineTension = config.tension;
+ }
+
+ // Utility
+ line._scale = me._yScale;
+ line._datasetIndex = me.index;
+ // Data
+ line._children = points;
+ // Model
+ line._model = me._resolveDatasetElementOptions(line);
+
+ line.pivot();
+ }
+
+ // Update Points
+ for (i = 0, ilen = points.length; i < ilen; ++i) {
+ me.updateElement(points[i], i, reset);
+ }
+
+ if (showLine && line._model.tension !== 0) {
+ me.updateBezierControlPoints();
+ }
+
+ // Now pivot the point for animation
+ for (i = 0, ilen = points.length; i < ilen; ++i) {
+ points[i].pivot();
+ }
+ },
+
+ updateElement: function(point, index, reset) {
+ var me = this;
+ var meta = me.getMeta();
+ var custom = point.custom || {};
+ var dataset = me.getDataset();
+ var datasetIndex = me.index;
+ var value = dataset.data[index];
+ var xScale = me._xScale;
+ var yScale = me._yScale;
+ var lineModel = meta.dataset._model;
+ var x, y;
+
+ var options = me._resolveDataElementOptions(point, index);
+
+ x = xScale.getPixelForValue(typeof value === 'object' ? value : NaN, index, datasetIndex);
+ y = reset ? yScale.getBasePixel() : me.calculatePointY(value, index, datasetIndex);
+
+ // Utility
+ point._xScale = xScale;
+ point._yScale = yScale;
+ point._options = options;
+ point._datasetIndex = datasetIndex;
+ point._index = index;
+
+ // Desired view properties
+ point._model = {
+ x: x,
+ y: y,
+ skip: custom.skip || isNaN(x) || isNaN(y),
+ // Appearance
+ radius: options.radius,
+ pointStyle: options.pointStyle,
+ rotation: options.rotation,
+ backgroundColor: options.backgroundColor,
+ borderColor: options.borderColor,
+ borderWidth: options.borderWidth,
+ tension: valueOrDefault$6(custom.tension, lineModel ? lineModel.tension : 0),
+ steppedLine: lineModel ? lineModel.steppedLine : false,
+ // Tooltip
+ hitRadius: options.hitRadius
+ };
+ },
+
+ /**
+ * @private
+ */
+ _resolveDatasetElementOptions: function(element) {
+ var me = this;
+ var config = me._config;
+ var custom = element.custom || {};
+ var options = me.chart.options;
+ var lineOptions = options.elements.line;
+ var values = core_datasetController.prototype._resolveDatasetElementOptions.apply(me, arguments);
+
+ // The default behavior of lines is to break at null values, according
+ // to https://github.com/chartjs/Chart.js/issues/2435#issuecomment-216718158
+ // This option gives lines the ability to span gaps
+ values.spanGaps = valueOrDefault$6(config.spanGaps, options.spanGaps);
+ values.tension = valueOrDefault$6(config.lineTension, lineOptions.tension);
+ values.steppedLine = resolve$2([custom.steppedLine, config.steppedLine, lineOptions.stepped]);
+ values.clip = toClip(valueOrDefault$6(config.clip, defaultClip(me._xScale, me._yScale, values.borderWidth)));
+
+ return values;
+ },
+
+ calculatePointY: function(value, index, datasetIndex) {
+ var me = this;
+ var chart = me.chart;
+ var yScale = me._yScale;
+ var sumPos = 0;
+ var sumNeg = 0;
+ var i, ds, dsMeta, stackedRightValue, rightValue, metasets, ilen;
+
+ if (yScale.options.stacked) {
+ rightValue = +yScale.getRightValue(value);
+ metasets = chart._getSortedVisibleDatasetMetas();
+ ilen = metasets.length;
+
+ for (i = 0; i < ilen; ++i) {
+ dsMeta = metasets[i];
+ if (dsMeta.index === datasetIndex) {
+ break;
+ }
+
+ ds = chart.data.datasets[dsMeta.index];
+ if (dsMeta.type === 'line' && dsMeta.yAxisID === yScale.id) {
+ stackedRightValue = +yScale.getRightValue(ds.data[index]);
+ if (stackedRightValue < 0) {
+ sumNeg += stackedRightValue || 0;
+ } else {
+ sumPos += stackedRightValue || 0;
+ }
+ }
+ }
+
+ if (rightValue < 0) {
+ return yScale.getPixelForValue(sumNeg + rightValue);
+ }
+ return yScale.getPixelForValue(sumPos + rightValue);
+ }
+ return yScale.getPixelForValue(value);
+ },
+
+ updateBezierControlPoints: function() {
+ var me = this;
+ var chart = me.chart;
+ var meta = me.getMeta();
+ var lineModel = meta.dataset._model;
+ var area = chart.chartArea;
+ var points = meta.data || [];
+ var i, ilen, model, controlPoints;
+
+ // Only consider points that are drawn in case the spanGaps option is used
+ if (lineModel.spanGaps) {
+ points = points.filter(function(pt) {
+ return !pt._model.skip;
+ });
+ }
+
+ function capControlPoint(pt, min, max) {
+ return Math.max(Math.min(pt, max), min);
+ }
+
+ if (lineModel.cubicInterpolationMode === 'monotone') {
+ helpers$1.splineCurveMonotone(points);
+ } else {
+ for (i = 0, ilen = points.length; i < ilen; ++i) {
+ model = points[i]._model;
+ controlPoints = helpers$1.splineCurve(
+ helpers$1.previousItem(points, i)._model,
+ model,
+ helpers$1.nextItem(points, i)._model,
+ lineModel.tension
+ );
+ model.controlPointPreviousX = controlPoints.previous.x;
+ model.controlPointPreviousY = controlPoints.previous.y;
+ model.controlPointNextX = controlPoints.next.x;
+ model.controlPointNextY = controlPoints.next.y;
+ }
+ }
+
+ if (chart.options.elements.line.capBezierPoints) {
+ for (i = 0, ilen = points.length; i < ilen; ++i) {
+ model = points[i]._model;
+ if (isPointInArea(model, area)) {
+ if (i > 0 && isPointInArea(points[i - 1]._model, area)) {
+ model.controlPointPreviousX = capControlPoint(model.controlPointPreviousX, area.left, area.right);
+ model.controlPointPreviousY = capControlPoint(model.controlPointPreviousY, area.top, area.bottom);
+ }
+ if (i < points.length - 1 && isPointInArea(points[i + 1]._model, area)) {
+ model.controlPointNextX = capControlPoint(model.controlPointNextX, area.left, area.right);
+ model.controlPointNextY = capControlPoint(model.controlPointNextY, area.top, area.bottom);
+ }
+ }
+ }
+ }
+ },
+
+ draw: function() {
+ var me = this;
+ var chart = me.chart;
+ var meta = me.getMeta();
+ var points = meta.data || [];
+ var area = chart.chartArea;
+ var canvas = chart.canvas;
+ var i = 0;
+ var ilen = points.length;
+ var clip;
+
+ if (me._showLine) {
+ clip = meta.dataset._model.clip;
+
+ helpers$1.canvas.clipArea(chart.ctx, {
+ left: clip.left === false ? 0 : area.left - clip.left,
+ right: clip.right === false ? canvas.width : area.right + clip.right,
+ top: clip.top === false ? 0 : area.top - clip.top,
+ bottom: clip.bottom === false ? canvas.height : area.bottom + clip.bottom
+ });
+
+ meta.dataset.draw();
+
+ helpers$1.canvas.unclipArea(chart.ctx);
+ }
+
+ // Draw the points
+ for (; i < ilen; ++i) {
+ points[i].draw(area);
+ }
+ },
+
+ /**
+ * @protected
+ */
+ setHoverStyle: function(point) {
+ var model = point._model;
+ var options = point._options;
+ var getHoverColor = helpers$1.getHoverColor;
+
+ point.$previousStyle = {
+ backgroundColor: model.backgroundColor,
+ borderColor: model.borderColor,
+ borderWidth: model.borderWidth,
+ radius: model.radius
+ };
+
+ model.backgroundColor = valueOrDefault$6(options.hoverBackgroundColor, getHoverColor(options.backgroundColor));
+ model.borderColor = valueOrDefault$6(options.hoverBorderColor, getHoverColor(options.borderColor));
+ model.borderWidth = valueOrDefault$6(options.hoverBorderWidth, options.borderWidth);
+ model.radius = valueOrDefault$6(options.hoverRadius, options.radius);
+ },
+}); + +var resolve$3 = helpers$1.options.resolve;
+
+core_defaults._set('polarArea', {
+ scale: {
+ type: 'radialLinear',
+ angleLines: {
+ display: false
+ },
+ gridLines: {
+ circular: true
+ },
+ pointLabels: {
+ display: false
+ },
+ ticks: {
+ beginAtZero: true
+ }
+ },
+
+ // Boolean - Whether to animate the rotation of the chart
+ animation: {
+ animateRotate: true,
+ animateScale: true
+ },
+
+ startAngle: -0.5 * Math.PI,
+ legendCallback: function(chart) {
+ var list = document.createElement('ul');
+ var data = chart.data;
+ var datasets = data.datasets;
+ var labels = data.labels;
+ var i, ilen, listItem, listItemSpan;
+
+ list.setAttribute('class', chart.id + '-legend');
+ if (datasets.length) {
+ for (i = 0, ilen = datasets[0].data.length; i < ilen; ++i) {
+ listItem = list.appendChild(document.createElement('li'));
+ listItemSpan = listItem.appendChild(document.createElement('span'));
+ listItemSpan.style.backgroundColor = datasets[0].backgroundColor[i];
+ if (labels[i]) {
+ listItem.appendChild(document.createTextNode(labels[i]));
+ }
+ }
+ }
+
+ return list.outerHTML;
+ },
+ legend: {
+ labels: {
+ generateLabels: function(chart) {
+ var data = chart.data;
+ if (data.labels.length && data.datasets.length) {
+ return data.labels.map(function(label, i) {
+ var meta = chart.getDatasetMeta(0);
+ var style = meta.controller.getStyle(i);
+
+ return {
+ text: label,
+ fillStyle: style.backgroundColor,
+ strokeStyle: style.borderColor,
+ lineWidth: style.borderWidth,
+ hidden: isNaN(data.datasets[0].data[i]) || meta.data[i].hidden,
+
+ // Extra data used for toggling the correct item
+ index: i
+ };
+ });
+ }
+ return [];
+ }
+ },
+
+ onClick: function(e, legendItem) {
+ var index = legendItem.index;
+ var chart = this.chart;
+ var i, ilen, meta;
+
+ for (i = 0, ilen = (chart.data.datasets || []).length; i < ilen; ++i) {
+ meta = chart.getDatasetMeta(i);
+ meta.data[index].hidden = !meta.data[index].hidden;
+ }
+
+ chart.update();
+ }
+ },
+
+ // Need to override these to give a nice default
+ tooltips: {
+ callbacks: {
+ title: function() {
+ return '';
+ },
+ label: function(item, data) {
+ return data.labels[item.index] + ': ' + item.yLabel;
+ }
+ }
+ }
+});
+
+var controller_polarArea = core_datasetController.extend({
+
+ dataElementType: elements.Arc,
+
+ linkScales: helpers$1.noop,
+
+ /**
+ * @private
+ */
+ _dataElementOptions: [
+ 'backgroundColor',
+ 'borderColor',
+ 'borderWidth',
+ 'borderAlign',
+ 'hoverBackgroundColor',
+ 'hoverBorderColor',
+ 'hoverBorderWidth',
+ ],
+
+ /**
+ * @private
+ */
+ _getIndexScaleId: function() {
+ return this.chart.scale.id;
+ },
+
+ /**
+ * @private
+ */
+ _getValueScaleId: function() {
+ return this.chart.scale.id;
+ },
+
+ update: function(reset) {
+ var me = this;
+ var dataset = me.getDataset();
+ var meta = me.getMeta();
+ var start = me.chart.options.startAngle || 0;
+ var starts = me._starts = [];
+ var angles = me._angles = [];
+ var arcs = meta.data;
+ var i, ilen, angle;
+
+ me._updateRadius();
+
+ meta.count = me.countVisibleElements();
+
+ for (i = 0, ilen = dataset.data.length; i < ilen; i++) {
+ starts[i] = start;
+ angle = me._computeAngle(i);
+ angles[i] = angle;
+ start += angle;
+ }
+
+ for (i = 0, ilen = arcs.length; i < ilen; ++i) {
+ arcs[i]._options = me._resolveDataElementOptions(arcs[i], i);
+ me.updateElement(arcs[i], i, reset);
+ }
+ },
+
+ /**
+ * @private
+ */
+ _updateRadius: function() {
+ var me = this;
+ var chart = me.chart;
+ var chartArea = chart.chartArea;
+ var opts = chart.options;
+ var minSize = Math.min(chartArea.right - chartArea.left, chartArea.bottom - chartArea.top);
+
+ chart.outerRadius = Math.max(minSize / 2, 0);
+ chart.innerRadius = Math.max(opts.cutoutPercentage ? (chart.outerRadius / 100) * (opts.cutoutPercentage) : 1, 0);
+ chart.radiusLength = (chart.outerRadius - chart.innerRadius) / chart.getVisibleDatasetCount();
+
+ me.outerRadius = chart.outerRadius - (chart.radiusLength * me.index);
+ me.innerRadius = me.outerRadius - chart.radiusLength;
+ },
+
+ updateElement: function(arc, index, reset) {
+ var me = this;
+ var chart = me.chart;
+ var dataset = me.getDataset();
+ var opts = chart.options;
+ var animationOpts = opts.animation;
+ var scale = chart.scale;
+ var labels = chart.data.labels;
+
+ var centerX = scale.xCenter;
+ var centerY = scale.yCenter;
+
+ // var negHalfPI = -0.5 * Math.PI;
+ var datasetStartAngle = opts.startAngle;
+ var distance = arc.hidden ? 0 : scale.getDistanceFromCenterForValue(dataset.data[index]);
+ var startAngle = me._starts[index];
+ var endAngle = startAngle + (arc.hidden ? 0 : me._angles[index]);
+
+ var resetRadius = animationOpts.animateScale ? 0 : scale.getDistanceFromCenterForValue(dataset.data[index]);
+ var options = arc._options || {};
+
+ helpers$1.extend(arc, {
+ // Utility
+ _datasetIndex: me.index,
+ _index: index,
+ _scale: scale,
+
+ // Desired view properties
+ _model: {
+ backgroundColor: options.backgroundColor,
+ borderColor: options.borderColor,
+ borderWidth: options.borderWidth,
+ borderAlign: options.borderAlign,
+ x: centerX,
+ y: centerY,
+ innerRadius: 0,
+ outerRadius: reset ? resetRadius : distance,
+ startAngle: reset && animationOpts.animateRotate ? datasetStartAngle : startAngle,
+ endAngle: reset && animationOpts.animateRotate ? datasetStartAngle : endAngle,
+ label: helpers$1.valueAtIndexOrDefault(labels, index, labels[index])
+ }
+ });
+
+ arc.pivot();
+ },
+
+ countVisibleElements: function() {
+ var dataset = this.getDataset();
+ var meta = this.getMeta();
+ var count = 0;
+
+ helpers$1.each(meta.data, function(element, index) {
+ if (!isNaN(dataset.data[index]) && !element.hidden) {
+ count++;
+ }
+ });
+
+ return count;
+ },
+
+ /**
+ * @protected
+ */
+ setHoverStyle: function(arc) {
+ var model = arc._model;
+ var options = arc._options;
+ var getHoverColor = helpers$1.getHoverColor;
+ var valueOrDefault = helpers$1.valueOrDefault;
+
+ arc.$previousStyle = {
+ backgroundColor: model.backgroundColor,
+ borderColor: model.borderColor,
+ borderWidth: model.borderWidth,
+ };
+
+ model.backgroundColor = valueOrDefault(options.hoverBackgroundColor, getHoverColor(options.backgroundColor));
+ model.borderColor = valueOrDefault(options.hoverBorderColor, getHoverColor(options.borderColor));
+ model.borderWidth = valueOrDefault(options.hoverBorderWidth, options.borderWidth);
+ },
+
+ /**
+ * @private
+ */
+ _computeAngle: function(index) {
+ var me = this;
+ var count = this.getMeta().count;
+ var dataset = me.getDataset();
+ var meta = me.getMeta();
+
+ if (isNaN(dataset.data[index]) || meta.data[index].hidden) {
+ return 0;
+ }
+
+ // Scriptable options
+ var context = {
+ chart: me.chart,
+ dataIndex: index,
+ dataset: dataset,
+ datasetIndex: me.index
+ };
+
+ return resolve$3([
+ me.chart.options.elements.arc.angle,
+ (2 * Math.PI) / count
+ ], context, index);
+ }
+}); + +core_defaults._set('pie', helpers$1.clone(core_defaults.doughnut));
+core_defaults._set('pie', {
+ cutoutPercentage: 0
+});
+
+// Pie charts are Doughnut chart with different defaults
+var controller_pie = controller_doughnut; + +var valueOrDefault$7 = helpers$1.valueOrDefault;
+
+core_defaults._set('radar', {
+ spanGaps: false,
+ scale: {
+ type: 'radialLinear'
+ },
+ elements: {
+ line: {
+ fill: 'start',
+ tension: 0 // no bezier in radar
+ }
+ }
+});
+
+var controller_radar = core_datasetController.extend({
+ datasetElementType: elements.Line,
+
+ dataElementType: elements.Point,
+
+ linkScales: helpers$1.noop,
+
+ /**
+ * @private
+ */
+ _datasetElementOptions: [
+ 'backgroundColor',
+ 'borderWidth',
+ 'borderColor',
+ 'borderCapStyle',
+ 'borderDash',
+ 'borderDashOffset',
+ 'borderJoinStyle',
+ 'fill'
+ ],
+
+ /**
+ * @private
+ */
+ _dataElementOptions: {
+ backgroundColor: 'pointBackgroundColor',
+ borderColor: 'pointBorderColor',
+ borderWidth: 'pointBorderWidth',
+ hitRadius: 'pointHitRadius',
+ hoverBackgroundColor: 'pointHoverBackgroundColor',
+ hoverBorderColor: 'pointHoverBorderColor',
+ hoverBorderWidth: 'pointHoverBorderWidth',
+ hoverRadius: 'pointHoverRadius',
+ pointStyle: 'pointStyle',
+ radius: 'pointRadius',
+ rotation: 'pointRotation'
+ },
+
+ /**
+ * @private
+ */
+ _getIndexScaleId: function() {
+ return this.chart.scale.id;
+ },
+
+ /**
+ * @private
+ */
+ _getValueScaleId: function() {
+ return this.chart.scale.id;
+ },
+
+ update: function(reset) {
+ var me = this;
+ var meta = me.getMeta();
+ var line = meta.dataset;
+ var points = meta.data || [];
+ var scale = me.chart.scale;
+ var config = me._config;
+ var i, ilen;
+
+ // Compatibility: If the properties are defined with only the old name, use those values
+ if (config.tension !== undefined && config.lineTension === undefined) {
+ config.lineTension = config.tension;
+ }
+
+ // Utility
+ line._scale = scale;
+ line._datasetIndex = me.index;
+ // Data
+ line._children = points;
+ line._loop = true;
+ // Model
+ line._model = me._resolveDatasetElementOptions(line);
+
+ line.pivot();
+
+ // Update Points
+ for (i = 0, ilen = points.length; i < ilen; ++i) {
+ me.updateElement(points[i], i, reset);
+ }
+
+ // Update bezier control points
+ me.updateBezierControlPoints();
+
+ // Now pivot the point for animation
+ for (i = 0, ilen = points.length; i < ilen; ++i) {
+ points[i].pivot();
+ }
+ },
+
+ updateElement: function(point, index, reset) {
+ var me = this;
+ var custom = point.custom || {};
+ var dataset = me.getDataset();
+ var scale = me.chart.scale;
+ var pointPosition = scale.getPointPositionForValue(index, dataset.data[index]);
+ var options = me._resolveDataElementOptions(point, index);
+ var lineModel = me.getMeta().dataset._model;
+ var x = reset ? scale.xCenter : pointPosition.x;
+ var y = reset ? scale.yCenter : pointPosition.y;
+
+ // Utility
+ point._scale = scale;
+ point._options = options;
+ point._datasetIndex = me.index;
+ point._index = index;
+
+ // Desired view properties
+ point._model = {
+ x: x, // value not used in dataset scale, but we want a consistent API between scales
+ y: y,
+ skip: custom.skip || isNaN(x) || isNaN(y),
+ // Appearance
+ radius: options.radius,
+ pointStyle: options.pointStyle,
+ rotation: options.rotation,
+ backgroundColor: options.backgroundColor,
+ borderColor: options.borderColor,
+ borderWidth: options.borderWidth,
+ tension: valueOrDefault$7(custom.tension, lineModel ? lineModel.tension : 0),
+
+ // Tooltip
+ hitRadius: options.hitRadius
+ };
+ },
+
+ /**
+ * @private
+ */
+ _resolveDatasetElementOptions: function() {
+ var me = this;
+ var config = me._config;
+ var options = me.chart.options;
+ var values = core_datasetController.prototype._resolveDatasetElementOptions.apply(me, arguments);
+
+ values.spanGaps = valueOrDefault$7(config.spanGaps, options.spanGaps);
+ values.tension = valueOrDefault$7(config.lineTension, options.elements.line.tension);
+
+ return values;
+ },
+
+ updateBezierControlPoints: function() {
+ var me = this;
+ var meta = me.getMeta();
+ var area = me.chart.chartArea;
+ var points = meta.data || [];
+ var i, ilen, model, controlPoints;
+
+ // Only consider points that are drawn in case the spanGaps option is used
+ if (meta.dataset._model.spanGaps) {
+ points = points.filter(function(pt) {
+ return !pt._model.skip;
+ });
+ }
+
+ function capControlPoint(pt, min, max) {
+ return Math.max(Math.min(pt, max), min);
+ }
+
+ for (i = 0, ilen = points.length; i < ilen; ++i) {
+ model = points[i]._model;
+ controlPoints = helpers$1.splineCurve(
+ helpers$1.previousItem(points, i, true)._model,
+ model,
+ helpers$1.nextItem(points, i, true)._model,
+ model.tension
+ );
+
+ // Prevent the bezier going outside of the bounds of the graph
+ model.controlPointPreviousX = capControlPoint(controlPoints.previous.x, area.left, area.right);
+ model.controlPointPreviousY = capControlPoint(controlPoints.previous.y, area.top, area.bottom);
+ model.controlPointNextX = capControlPoint(controlPoints.next.x, area.left, area.right);
+ model.controlPointNextY = capControlPoint(controlPoints.next.y, area.top, area.bottom);
+ }
+ },
+
+ setHoverStyle: function(point) {
+ var model = point._model;
+ var options = point._options;
+ var getHoverColor = helpers$1.getHoverColor;
+
+ point.$previousStyle = {
+ backgroundColor: model.backgroundColor,
+ borderColor: model.borderColor,
+ borderWidth: model.borderWidth,
+ radius: model.radius
+ };
+
+ model.backgroundColor = valueOrDefault$7(options.hoverBackgroundColor, getHoverColor(options.backgroundColor));
+ model.borderColor = valueOrDefault$7(options.hoverBorderColor, getHoverColor(options.borderColor));
+ model.borderWidth = valueOrDefault$7(options.hoverBorderWidth, options.borderWidth);
+ model.radius = valueOrDefault$7(options.hoverRadius, options.radius);
+ }
+}); + +core_defaults._set('scatter', {
+ hover: {
+ mode: 'single'
+ },
+
+ scales: {
+ xAxes: [{
+ id: 'x-axis-1', // need an ID so datasets can reference the scale
+ type: 'linear', // scatter should not use a category axis
+ position: 'bottom'
+ }],
+ yAxes: [{
+ id: 'y-axis-1',
+ type: 'linear',
+ position: 'left'
+ }]
+ },
+
+ tooltips: {
+ callbacks: {
+ title: function() {
+ return ''; // doesn't make sense for scatter since data are formatted as a point
+ },
+ label: function(item) {
+ return '(' + item.xLabel + ', ' + item.yLabel + ')';
+ }
+ }
+ }
+});
+
+core_defaults._set('global', {
+ datasets: {
+ scatter: {
+ showLine: false
+ }
+ }
+});
+
+// Scatter charts use line controllers
+var controller_scatter = controller_line; + +// NOTE export a map in which the key represents the controller type, not
+// the class, and so must be CamelCase in order to be correctly retrieved
+// by the controller in core.controller.js (`controllers[meta.type]`).
+
+var controllers = {
+ bar: controller_bar,
+ bubble: controller_bubble,
+ doughnut: controller_doughnut,
+ horizontalBar: controller_horizontalBar,
+ line: controller_line,
+ polarArea: controller_polarArea,
+ pie: controller_pie,
+ radar: controller_radar,
+ scatter: controller_scatter
+}; + +/**
+ * Helper function to get relative position for an event
+ * @param {Event|IEvent} event - The event to get the position for
+ * @param {Chart} chart - The chart
+ * @returns {object} the event position
+ */
+function getRelativePosition(e, chart) {
+ if (e.native) {
+ return {
+ x: e.x,
+ y: e.y
+ };
+ }
+
+ return helpers$1.getRelativePosition(e, chart);
+}
+
+/**
+ * Helper function to traverse all of the visible elements in the chart
+ * @param {Chart} chart - the chart
+ * @param {function} handler - the callback to execute for each visible item
+ */
+function parseVisibleItems(chart, handler) {
+ var metasets = chart._getSortedVisibleDatasetMetas();
+ var metadata, i, j, ilen, jlen, element;
+
+ for (i = 0, ilen = metasets.length; i < ilen; ++i) {
+ metadata = metasets[i].data;
+ for (j = 0, jlen = metadata.length; j < jlen; ++j) {
+ element = metadata[j];
+ if (!element._view.skip) {
+ handler(element);
+ }
+ }
+ }
+}
+
+/**
+ * Helper function to get the items that intersect the event position
+ * @param {ChartElement[]} items - elements to filter
+ * @param {object} position - the point to be nearest to
+ * @return {ChartElement[]} the nearest items
+ */
+function getIntersectItems(chart, position) {
+ var elements = [];
+
+ parseVisibleItems(chart, function(element) {
+ if (element.inRange(position.x, position.y)) {
+ elements.push(element);
+ }
+ });
+
+ return elements;
+}
+
+/**
+ * Helper function to get the items nearest to the event position considering all visible items in teh chart
+ * @param {Chart} chart - the chart to look at elements from
+ * @param {object} position - the point to be nearest to
+ * @param {boolean} intersect - if true, only consider items that intersect the position
+ * @param {function} distanceMetric - function to provide the distance between points
+ * @return {ChartElement[]} the nearest items
+ */
+function getNearestItems(chart, position, intersect, distanceMetric) {
+ var minDistance = Number.POSITIVE_INFINITY;
+ var nearestItems = [];
+
+ parseVisibleItems(chart, function(element) {
+ if (intersect && !element.inRange(position.x, position.y)) {
+ return;
+ }
+
+ var center = element.getCenterPoint();
+ var distance = distanceMetric(position, center);
+ if (distance < minDistance) {
+ nearestItems = [element];
+ minDistance = distance;
+ } else if (distance === minDistance) {
+ // Can have multiple items at the same distance in which case we sort by size
+ nearestItems.push(element);
+ }
+ });
+
+ return nearestItems;
+}
+
+/**
+ * Get a distance metric function for two points based on the
+ * axis mode setting
+ * @param {string} axis - the axis mode. x|y|xy
+ */
+function getDistanceMetricForAxis(axis) {
+ var useX = axis.indexOf('x') !== -1;
+ var useY = axis.indexOf('y') !== -1;
+
+ return function(pt1, pt2) {
+ var deltaX = useX ? Math.abs(pt1.x - pt2.x) : 0;
+ var deltaY = useY ? Math.abs(pt1.y - pt2.y) : 0;
+ return Math.sqrt(Math.pow(deltaX, 2) + Math.pow(deltaY, 2));
+ };
+}
+
+function indexMode(chart, e, options) {
+ var position = getRelativePosition(e, chart);
+ // Default axis for index mode is 'x' to match old behaviour
+ options.axis = options.axis || 'x';
+ var distanceMetric = getDistanceMetricForAxis(options.axis);
+ var items = options.intersect ? getIntersectItems(chart, position) : getNearestItems(chart, position, false, distanceMetric);
+ var elements = [];
+
+ if (!items.length) {
+ return [];
+ }
+
+ chart._getSortedVisibleDatasetMetas().forEach(function(meta) {
+ var element = meta.data[items[0]._index];
+
+ // don't count items that are skipped (null data)
+ if (element && !element._view.skip) {
+ elements.push(element);
+ }
+ });
+
+ return elements;
+}
+
+/**
+ * @interface IInteractionOptions
+ */
+/**
+ * If true, only consider items that intersect the point
+ * @name IInterfaceOptions#boolean
+ * @type Boolean
+ */
+
+/**
+ * Contains interaction related functions
+ * @namespace Chart.Interaction
+ */
+var core_interaction = {
+ // Helper function for different modes
+ modes: {
+ single: function(chart, e) {
+ var position = getRelativePosition(e, chart);
+ var elements = [];
+
+ parseVisibleItems(chart, function(element) {
+ if (element.inRange(position.x, position.y)) {
+ elements.push(element);
+ return elements;
+ }
+ });
+
+ return elements.slice(0, 1);
+ },
+
+ /**
+ * @function Chart.Interaction.modes.label
+ * @deprecated since version 2.4.0
+ * @todo remove at version 3
+ * @private
+ */
+ label: indexMode,
+
+ /**
+ * Returns items at the same index. If the options.intersect parameter is true, we only return items if we intersect something
+ * If the options.intersect mode is false, we find the nearest item and return the items at the same index as that item
+ * @function Chart.Interaction.modes.index
+ * @since v2.4.0
+ * @param {Chart} chart - the chart we are returning items from
+ * @param {Event} e - the event we are find things at
+ * @param {IInteractionOptions} options - options to use during interaction
+ * @return {Chart.Element[]} Array of elements that are under the point. If none are found, an empty array is returned
+ */
+ index: indexMode,
+
+ /**
+ * Returns items in the same dataset. If the options.intersect parameter is true, we only return items if we intersect something
+ * If the options.intersect is false, we find the nearest item and return the items in that dataset
+ * @function Chart.Interaction.modes.dataset
+ * @param {Chart} chart - the chart we are returning items from
+ * @param {Event} e - the event we are find things at
+ * @param {IInteractionOptions} options - options to use during interaction
+ * @return {Chart.Element[]} Array of elements that are under the point. If none are found, an empty array is returned
+ */
+ dataset: function(chart, e, options) {
+ var position = getRelativePosition(e, chart);
+ options.axis = options.axis || 'xy';
+ var distanceMetric = getDistanceMetricForAxis(options.axis);
+ var items = options.intersect ? getIntersectItems(chart, position) : getNearestItems(chart, position, false, distanceMetric);
+
+ if (items.length > 0) {
+ items = chart.getDatasetMeta(items[0]._datasetIndex).data;
+ }
+
+ return items;
+ },
+
+ /**
+ * @function Chart.Interaction.modes.x-axis
+ * @deprecated since version 2.4.0. Use index mode and intersect == true
+ * @todo remove at version 3
+ * @private
+ */
+ 'x-axis': function(chart, e) {
+ return indexMode(chart, e, {intersect: false});
+ },
+
+ /**
+ * Point mode returns all elements that hit test based on the event position
+ * of the event
+ * @function Chart.Interaction.modes.intersect
+ * @param {Chart} chart - the chart we are returning items from
+ * @param {Event} e - the event we are find things at
+ * @return {Chart.Element[]} Array of elements that are under the point. If none are found, an empty array is returned
+ */
+ point: function(chart, e) {
+ var position = getRelativePosition(e, chart);
+ return getIntersectItems(chart, position);
+ },
+
+ /**
+ * nearest mode returns the element closest to the point
+ * @function Chart.Interaction.modes.intersect
+ * @param {Chart} chart - the chart we are returning items from
+ * @param {Event} e - the event we are find things at
+ * @param {IInteractionOptions} options - options to use
+ * @return {Chart.Element[]} Array of elements that are under the point. If none are found, an empty array is returned
+ */
+ nearest: function(chart, e, options) {
+ var position = getRelativePosition(e, chart);
+ options.axis = options.axis || 'xy';
+ var distanceMetric = getDistanceMetricForAxis(options.axis);
+ return getNearestItems(chart, position, options.intersect, distanceMetric);
+ },
+
+ /**
+ * x mode returns the elements that hit-test at the current x coordinate
+ * @function Chart.Interaction.modes.x
+ * @param {Chart} chart - the chart we are returning items from
+ * @param {Event} e - the event we are find things at
+ * @param {IInteractionOptions} options - options to use
+ * @return {Chart.Element[]} Array of elements that are under the point. If none are found, an empty array is returned
+ */
+ x: function(chart, e, options) {
+ var position = getRelativePosition(e, chart);
+ var items = [];
+ var intersectsItem = false;
+
+ parseVisibleItems(chart, function(element) {
+ if (element.inXRange(position.x)) {
+ items.push(element);
+ }
+
+ if (element.inRange(position.x, position.y)) {
+ intersectsItem = true;
+ }
+ });
+
+ // If we want to trigger on an intersect and we don't have any items
+ // that intersect the position, return nothing
+ if (options.intersect && !intersectsItem) {
+ items = [];
+ }
+ return items;
+ },
+
+ /**
+ * y mode returns the elements that hit-test at the current y coordinate
+ * @function Chart.Interaction.modes.y
+ * @param {Chart} chart - the chart we are returning items from
+ * @param {Event} e - the event we are find things at
+ * @param {IInteractionOptions} options - options to use
+ * @return {Chart.Element[]} Array of elements that are under the point. If none are found, an empty array is returned
+ */
+ y: function(chart, e, options) {
+ var position = getRelativePosition(e, chart);
+ var items = [];
+ var intersectsItem = false;
+
+ parseVisibleItems(chart, function(element) {
+ if (element.inYRange(position.y)) {
+ items.push(element);
+ }
+
+ if (element.inRange(position.x, position.y)) {
+ intersectsItem = true;
+ }
+ });
+
+ // If we want to trigger on an intersect and we don't have any items
+ // that intersect the position, return nothing
+ if (options.intersect && !intersectsItem) {
+ items = [];
+ }
+ return items;
+ }
+ }
+}; + +var extend = helpers$1.extend;
+
+function filterByPosition(array, position) {
+ return helpers$1.where(array, function(v) {
+ return v.pos === position;
+ });
+}
+
+function sortByWeight(array, reverse) {
+ return array.sort(function(a, b) {
+ var v0 = reverse ? b : a;
+ var v1 = reverse ? a : b;
+ return v0.weight === v1.weight ?
+ v0.index - v1.index :
+ v0.weight - v1.weight;
+ });
+}
+
+function wrapBoxes(boxes) {
+ var layoutBoxes = [];
+ var i, ilen, box;
+
+ for (i = 0, ilen = (boxes || []).length; i < ilen; ++i) {
+ box = boxes[i];
+ layoutBoxes.push({
+ index: i,
+ box: box,
+ pos: box.position,
+ horizontal: box.isHorizontal(),
+ weight: box.weight
+ });
+ }
+ return layoutBoxes;
+}
+
+function setLayoutDims(layouts, params) {
+ var i, ilen, layout;
+ for (i = 0, ilen = layouts.length; i < ilen; ++i) {
+ layout = layouts[i];
+ // store width used instead of chartArea.w in fitBoxes
+ layout.width = layout.horizontal
+ ? layout.box.fullWidth && params.availableWidth
+ : params.vBoxMaxWidth;
+ // store height used instead of chartArea.h in fitBoxes
+ layout.height = layout.horizontal && params.hBoxMaxHeight;
+ }
+}
+
+function buildLayoutBoxes(boxes) {
+ var layoutBoxes = wrapBoxes(boxes);
+ var left = sortByWeight(filterByPosition(layoutBoxes, 'left'), true);
+ var right = sortByWeight(filterByPosition(layoutBoxes, 'right'));
+ var top = sortByWeight(filterByPosition(layoutBoxes, 'top'), true);
+ var bottom = sortByWeight(filterByPosition(layoutBoxes, 'bottom'));
+
+ return {
+ leftAndTop: left.concat(top),
+ rightAndBottom: right.concat(bottom),
+ chartArea: filterByPosition(layoutBoxes, 'chartArea'),
+ vertical: left.concat(right),
+ horizontal: top.concat(bottom)
+ };
+}
+
+function getCombinedMax(maxPadding, chartArea, a, b) {
+ return Math.max(maxPadding[a], chartArea[a]) + Math.max(maxPadding[b], chartArea[b]);
+}
+
+function updateDims(chartArea, params, layout) {
+ var box = layout.box;
+ var maxPadding = chartArea.maxPadding;
+ var newWidth, newHeight;
+
+ if (layout.size) {
+ // this layout was already counted for, lets first reduce old size
+ chartArea[layout.pos] -= layout.size;
+ }
+ layout.size = layout.horizontal ? box.height : box.width;
+ chartArea[layout.pos] += layout.size;
+
+ if (box.getPadding) {
+ var boxPadding = box.getPadding();
+ maxPadding.top = Math.max(maxPadding.top, boxPadding.top);
+ maxPadding.left = Math.max(maxPadding.left, boxPadding.left);
+ maxPadding.bottom = Math.max(maxPadding.bottom, boxPadding.bottom);
+ maxPadding.right = Math.max(maxPadding.right, boxPadding.right);
+ }
+
+ newWidth = params.outerWidth - getCombinedMax(maxPadding, chartArea, 'left', 'right');
+ newHeight = params.outerHeight - getCombinedMax(maxPadding, chartArea, 'top', 'bottom');
+
+ if (newWidth !== chartArea.w || newHeight !== chartArea.h) {
+ chartArea.w = newWidth;
+ chartArea.h = newHeight;
+
+ // return true if chart area changed in layout's direction
+ var sizes = layout.horizontal ? [newWidth, chartArea.w] : [newHeight, chartArea.h];
+ return sizes[0] !== sizes[1] && (!isNaN(sizes[0]) || !isNaN(sizes[1]));
+ }
+}
+
+function handleMaxPadding(chartArea) {
+ var maxPadding = chartArea.maxPadding;
+
+ function updatePos(pos) {
+ var change = Math.max(maxPadding[pos] - chartArea[pos], 0);
+ chartArea[pos] += change;
+ return change;
+ }
+ chartArea.y += updatePos('top');
+ chartArea.x += updatePos('left');
+ updatePos('right');
+ updatePos('bottom');
+}
+
+function getMargins(horizontal, chartArea) {
+ var maxPadding = chartArea.maxPadding;
+
+ function marginForPositions(positions) {
+ var margin = {left: 0, top: 0, right: 0, bottom: 0};
+ positions.forEach(function(pos) {
+ margin[pos] = Math.max(chartArea[pos], maxPadding[pos]);
+ });
+ return margin;
+ }
+
+ return horizontal
+ ? marginForPositions(['left', 'right'])
+ : marginForPositions(['top', 'bottom']);
+}
+
+function fitBoxes(boxes, chartArea, params) {
+ var refitBoxes = [];
+ var i, ilen, layout, box, refit, changed;
+
+ for (i = 0, ilen = boxes.length; i < ilen; ++i) {
+ layout = boxes[i];
+ box = layout.box;
+
+ box.update(
+ layout.width || chartArea.w,
+ layout.height || chartArea.h,
+ getMargins(layout.horizontal, chartArea)
+ );
+ if (updateDims(chartArea, params, layout)) {
+ changed = true;
+ if (refitBoxes.length) {
+ // Dimensions changed and there were non full width boxes before this
+ // -> we have to refit those
+ refit = true;
+ }
+ }
+ if (!box.fullWidth) { // fullWidth boxes don't need to be re-fitted in any case
+ refitBoxes.push(layout);
+ }
+ }
+
+ return refit ? fitBoxes(refitBoxes, chartArea, params) || changed : changed;
+}
+
+function placeBoxes(boxes, chartArea, params) {
+ var userPadding = params.padding;
+ var x = chartArea.x;
+ var y = chartArea.y;
+ var i, ilen, layout, box;
+
+ for (i = 0, ilen = boxes.length; i < ilen; ++i) {
+ layout = boxes[i];
+ box = layout.box;
+ if (layout.horizontal) {
+ box.left = box.fullWidth ? userPadding.left : chartArea.left;
+ box.right = box.fullWidth ? params.outerWidth - userPadding.right : chartArea.left + chartArea.w;
+ box.top = y;
+ box.bottom = y + box.height;
+ box.width = box.right - box.left;
+ y = box.bottom;
+ } else {
+ box.left = x;
+ box.right = x + box.width;
+ box.top = chartArea.top;
+ box.bottom = chartArea.top + chartArea.h;
+ box.height = box.bottom - box.top;
+ x = box.right;
+ }
+ }
+
+ chartArea.x = x;
+ chartArea.y = y;
+}
+
+core_defaults._set('global', {
+ layout: {
+ padding: {
+ top: 0,
+ right: 0,
+ bottom: 0,
+ left: 0
+ }
+ }
+});
+
+/**
+ * @interface ILayoutItem
+ * @prop {string} position - The position of the item in the chart layout. Possible values are
+ * 'left', 'top', 'right', 'bottom', and 'chartArea'
+ * @prop {number} weight - The weight used to sort the item. Higher weights are further away from the chart area
+ * @prop {boolean} fullWidth - if true, and the item is horizontal, then push vertical boxes down
+ * @prop {function} isHorizontal - returns true if the layout item is horizontal (ie. top or bottom)
+ * @prop {function} update - Takes two parameters: width and height. Returns size of item
+ * @prop {function} getPadding - Returns an object with padding on the edges
+ * @prop {number} width - Width of item. Must be valid after update()
+ * @prop {number} height - Height of item. Must be valid after update()
+ * @prop {number} left - Left edge of the item. Set by layout system and cannot be used in update
+ * @prop {number} top - Top edge of the item. Set by layout system and cannot be used in update
+ * @prop {number} right - Right edge of the item. Set by layout system and cannot be used in update
+ * @prop {number} bottom - Bottom edge of the item. Set by layout system and cannot be used in update
+ */
+
+// The layout service is very self explanatory. It's responsible for the layout within a chart.
+// Scales, Legends and Plugins all rely on the layout service and can easily register to be placed anywhere they need
+// It is this service's responsibility of carrying out that layout.
+var core_layouts = {
+ defaults: {},
+
+ /**
+ * Register a box to a chart.
+ * A box is simply a reference to an object that requires layout. eg. Scales, Legend, Title.
+ * @param {Chart} chart - the chart to use
+ * @param {ILayoutItem} item - the item to add to be layed out
+ */
+ addBox: function(chart, item) {
+ if (!chart.boxes) {
+ chart.boxes = [];
+ }
+
+ // initialize item with default values
+ item.fullWidth = item.fullWidth || false;
+ item.position = item.position || 'top';
+ item.weight = item.weight || 0;
+ item._layers = item._layers || function() {
+ return [{
+ z: 0,
+ draw: function() {
+ item.draw.apply(item, arguments);
+ }
+ }];
+ };
+
+ chart.boxes.push(item);
+ },
+
+ /**
+ * Remove a layoutItem from a chart
+ * @param {Chart} chart - the chart to remove the box from
+ * @param {ILayoutItem} layoutItem - the item to remove from the layout
+ */
+ removeBox: function(chart, layoutItem) {
+ var index = chart.boxes ? chart.boxes.indexOf(layoutItem) : -1;
+ if (index !== -1) {
+ chart.boxes.splice(index, 1);
+ }
+ },
+
+ /**
+ * Sets (or updates) options on the given `item`.
+ * @param {Chart} chart - the chart in which the item lives (or will be added to)
+ * @param {ILayoutItem} item - the item to configure with the given options
+ * @param {object} options - the new item options.
+ */
+ configure: function(chart, item, options) {
+ var props = ['fullWidth', 'position', 'weight'];
+ var ilen = props.length;
+ var i = 0;
+ var prop;
+
+ for (; i < ilen; ++i) {
+ prop = props[i];
+ if (options.hasOwnProperty(prop)) {
+ item[prop] = options[prop];
+ }
+ }
+ },
+
+ /**
+ * Fits boxes of the given chart into the given size by having each box measure itself
+ * then running a fitting algorithm
+ * @param {Chart} chart - the chart
+ * @param {number} width - the width to fit into
+ * @param {number} height - the height to fit into
+ */
+ update: function(chart, width, height) {
+ if (!chart) {
+ return;
+ }
+
+ var layoutOptions = chart.options.layout || {};
+ var padding = helpers$1.options.toPadding(layoutOptions.padding);
+
+ var availableWidth = width - padding.width;
+ var availableHeight = height - padding.height;
+ var boxes = buildLayoutBoxes(chart.boxes);
+ var verticalBoxes = boxes.vertical;
+ var horizontalBoxes = boxes.horizontal;
+
+ // 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) |
+ // |----------------------------------------------------|
+ //
+
+ var params = Object.freeze({
+ outerWidth: width,
+ outerHeight: height,
+ padding: padding,
+ availableWidth: availableWidth,
+ vBoxMaxWidth: availableWidth / 2 / verticalBoxes.length,
+ hBoxMaxHeight: availableHeight / 2
+ });
+ var chartArea = extend({
+ maxPadding: extend({}, padding),
+ w: availableWidth,
+ h: availableHeight,
+ x: padding.left,
+ y: padding.top
+ }, padding);
+
+ setLayoutDims(verticalBoxes.concat(horizontalBoxes), params);
+
+ // First fit vertical boxes
+ fitBoxes(verticalBoxes, chartArea, params);
+
+ // Then fit horizontal boxes
+ if (fitBoxes(horizontalBoxes, chartArea, params)) {
+ // if the area changed, re-fit vertical boxes
+ fitBoxes(verticalBoxes, chartArea, params);
+ }
+
+ handleMaxPadding(chartArea);
+
+ // Finally place the boxes to correct coordinates
+ placeBoxes(boxes.leftAndTop, chartArea, params);
+
+ // Move to opposite side of chart
+ chartArea.x += chartArea.w;
+ chartArea.y += chartArea.h;
+
+ placeBoxes(boxes.rightAndBottom, chartArea, params);
+
+ chart.chartArea = {
+ left: chartArea.left,
+ top: chartArea.top,
+ right: chartArea.left + chartArea.w,
+ bottom: chartArea.top + chartArea.h
+ };
+
+ // Finally update boxes in chartArea (radial scale for example)
+ helpers$1.each(boxes.chartArea, function(layout) {
+ var box = layout.box;
+ extend(box, chart.chartArea);
+ box.update(chartArea.w, chartArea.h);
+ });
+ }
+}; + +/**
+ * Platform fallback implementation (minimal).
+ * @see https://github.com/chartjs/Chart.js/pull/4591#issuecomment-319575939
+ */
+
+var platform_basic = {
+ acquireContext: function(item) {
+ if (item && item.canvas) {
+ // Support for any object associated to a canvas (including a context2d)
+ item = item.canvas;
+ }
+
+ return item && item.getContext('2d') || null;
+ }
+}; + +var platform_dom = "/*\r\n * DOM element rendering detection\r\n * https://davidwalsh.name/detect-node-insertion\r\n */\r\n@keyframes chartjs-render-animation {\r\n\tfrom { opacity: 0.99; }\r\n\tto { opacity: 1; }\r\n}\r\n\r\n.chartjs-render-monitor {\r\n\tanimation: chartjs-render-animation 0.001s;\r\n}\r\n\r\n/*\r\n * DOM element resizing detection\r\n * https://github.com/marcj/css-element-queries\r\n */\r\n.chartjs-size-monitor,\r\n.chartjs-size-monitor-expand,\r\n.chartjs-size-monitor-shrink {\r\n\tposition: absolute;\r\n\tdirection: ltr;\r\n\tleft: 0;\r\n\ttop: 0;\r\n\tright: 0;\r\n\tbottom: 0;\r\n\toverflow: hidden;\r\n\tpointer-events: none;\r\n\tvisibility: hidden;\r\n\tz-index: -1;\r\n}\r\n\r\n.chartjs-size-monitor-expand > div {\r\n\tposition: absolute;\r\n\twidth: 1000000px;\r\n\theight: 1000000px;\r\n\tleft: 0;\r\n\ttop: 0;\r\n}\r\n\r\n.chartjs-size-monitor-shrink > div {\r\n\tposition: absolute;\r\n\twidth: 200%;\r\n\theight: 200%;\r\n\tleft: 0;\r\n\ttop: 0;\r\n}\r\n"; + +var platform_dom$1 = /*#__PURE__*/Object.freeze({ +__proto__: null, +'default': platform_dom +}); + +var stylesheet = getCjsExportFromNamespace(platform_dom$1); + +var EXPANDO_KEY = '$chartjs';
+var CSS_PREFIX = 'chartjs-';
+var CSS_SIZE_MONITOR = CSS_PREFIX + 'size-monitor';
+var CSS_RENDER_MONITOR = CSS_PREFIX + 'render-monitor';
+var CSS_RENDER_ANIMATION = CSS_PREFIX + 'render-animation';
+var ANIMATION_START_EVENTS = ['animationstart', 'webkitAnimationStart'];
+
+/**
+ * DOM event types -> Chart.js event types.
+ * Note: only events with different types are mapped.
+ * @see https://developer.mozilla.org/en-US/docs/Web/Events
+ */
+var EVENT_TYPES = {
+ touchstart: 'mousedown',
+ touchmove: 'mousemove',
+ touchend: 'mouseup',
+ pointerenter: 'mouseenter',
+ pointerdown: 'mousedown',
+ pointermove: 'mousemove',
+ pointerup: 'mouseup',
+ pointerleave: 'mouseout',
+ pointerout: 'mouseout'
+};
+
+/**
+ * The "used" size is the final value of a dimension property after all calculations have
+ * been performed. This method uses the computed style of `element` but returns undefined
+ * if the computed style is not expressed in pixels. That can happen in some cases where
+ * `element` has a size relative to its parent and this last one is not yet displayed,
+ * for example because of `display: none` on a parent node.
+ * @see https://developer.mozilla.org/en-US/docs/Web/CSS/used_value
+ * @returns {number} Size in pixels or undefined if unknown.
+ */
+function readUsedSize(element, property) {
+ var value = helpers$1.getStyle(element, property);
+ var matches = value && value.match(/^(\d+)(\.\d+)?px$/);
+ return matches ? Number(matches[1]) : undefined;
+}
+
+/**
+ * Initializes the canvas style and render size without modifying the canvas display size,
+ * since responsiveness is handled by the controller.resize() method. The config is used
+ * to determine the aspect ratio to apply in case no explicit height has been specified.
+ */
+function initCanvas(canvas, config) {
+ var style = canvas.style;
+
+ // NOTE(SB) canvas.getAttribute('width') !== canvas.width: in the first case it
+ // returns null or '' if no explicit value has been set to the canvas attribute.
+ var renderHeight = canvas.getAttribute('height');
+ var renderWidth = canvas.getAttribute('width');
+
+ // Chart.js modifies some canvas values that we want to restore on destroy
+ canvas[EXPANDO_KEY] = {
+ initial: {
+ height: renderHeight,
+ width: renderWidth,
+ style: {
+ display: style.display,
+ height: style.height,
+ width: style.width
+ }
+ }
+ };
+
+ // Force canvas to display as block to avoid extra space caused by inline
+ // elements, which would interfere with the responsive resize process.
+ // https://github.com/chartjs/Chart.js/issues/2538
+ style.display = style.display || 'block';
+
+ if (renderWidth === null || renderWidth === '') {
+ var displayWidth = readUsedSize(canvas, 'width');
+ if (displayWidth !== undefined) {
+ canvas.width = displayWidth;
+ }
+ }
+
+ if (renderHeight === null || renderHeight === '') {
+ if (canvas.style.height === '') {
+ // If no explicit render height and style height, let's apply the aspect ratio,
+ // which one can be specified by the user but also by charts as default option
+ // (i.e. options.aspectRatio). If not specified, use canvas aspect ratio of 2.
+ canvas.height = canvas.width / (config.options.aspectRatio || 2);
+ } else {
+ var displayHeight = readUsedSize(canvas, 'height');
+ if (displayWidth !== undefined) {
+ canvas.height = displayHeight;
+ }
+ }
+ }
+
+ return canvas;
+}
+
+/**
+ * Detects support for options object argument in addEventListener.
+ * https://developer.mozilla.org/en-US/docs/Web/API/EventTarget/addEventListener#Safely_detecting_option_support
+ * @private
+ */
+var supportsEventListenerOptions = (function() {
+ var supports = false;
+ try {
+ var options = Object.defineProperty({}, 'passive', {
+ // eslint-disable-next-line getter-return
+ get: function() {
+ supports = true;
+ }
+ });
+ window.addEventListener('e', null, options);
+ } catch (e) {
+ // continue regardless of error
+ }
+ return supports;
+}());
+
+// Default passive to true as expected by Chrome for 'touchstart' and 'touchend' events.
+// https://github.com/chartjs/Chart.js/issues/4287
+var eventListenerOptions = supportsEventListenerOptions ? {passive: true} : false;
+
+function addListener(node, type, listener) {
+ node.addEventListener(type, listener, eventListenerOptions);
+}
+
+function removeListener(node, type, listener) {
+ node.removeEventListener(type, listener, eventListenerOptions);
+}
+
+function createEvent(type, chart, x, y, nativeEvent) {
+ return {
+ type: type,
+ chart: chart,
+ native: nativeEvent || null,
+ x: x !== undefined ? x : null,
+ y: y !== undefined ? y : null,
+ };
+}
+
+function fromNativeEvent(event, chart) {
+ var type = EVENT_TYPES[event.type] || event.type;
+ var pos = helpers$1.getRelativePosition(event, chart);
+ return createEvent(type, chart, pos.x, pos.y, event);
+}
+
+function throttled(fn, thisArg) {
+ var ticking = false;
+ var args = [];
+
+ return function() {
+ args = Array.prototype.slice.call(arguments);
+ thisArg = thisArg || this;
+
+ if (!ticking) {
+ ticking = true;
+ helpers$1.requestAnimFrame.call(window, function() {
+ ticking = false;
+ fn.apply(thisArg, args);
+ });
+ }
+ };
+}
+
+function createDiv(cls) {
+ var el = document.createElement('div');
+ el.className = cls || '';
+ return el;
+}
+
+// Implementation based on https://github.com/marcj/css-element-queries
+function createResizer(handler) {
+ var maxSize = 1000000;
+
+ // NOTE(SB) Don't use innerHTML because it could be considered unsafe.
+ // https://github.com/chartjs/Chart.js/issues/5902
+ var resizer = createDiv(CSS_SIZE_MONITOR);
+ var expand = createDiv(CSS_SIZE_MONITOR + '-expand');
+ var shrink = createDiv(CSS_SIZE_MONITOR + '-shrink');
+
+ expand.appendChild(createDiv());
+ shrink.appendChild(createDiv());
+
+ resizer.appendChild(expand);
+ resizer.appendChild(shrink);
+ resizer._reset = function() {
+ expand.scrollLeft = maxSize;
+ expand.scrollTop = maxSize;
+ shrink.scrollLeft = maxSize;
+ shrink.scrollTop = maxSize;
+ };
+
+ var onScroll = function() {
+ resizer._reset();
+ handler();
+ };
+
+ addListener(expand, 'scroll', onScroll.bind(expand, 'expand'));
+ addListener(shrink, 'scroll', onScroll.bind(shrink, 'shrink'));
+
+ return resizer;
+}
+
+// https://davidwalsh.name/detect-node-insertion
+function watchForRender(node, handler) {
+ var expando = node[EXPANDO_KEY] || (node[EXPANDO_KEY] = {});
+ var proxy = expando.renderProxy = function(e) {
+ if (e.animationName === CSS_RENDER_ANIMATION) {
+ handler();
+ }
+ };
+
+ helpers$1.each(ANIMATION_START_EVENTS, function(type) {
+ addListener(node, type, proxy);
+ });
+
+ // #4737: Chrome might skip the CSS animation when the CSS_RENDER_MONITOR class
+ // is removed then added back immediately (same animation frame?). Accessing the
+ // `offsetParent` property will force a reflow and re-evaluate the CSS animation.
+ // https://gist.github.com/paulirish/5d52fb081b3570c81e3a#box-metrics
+ // https://github.com/chartjs/Chart.js/issues/4737
+ expando.reflow = !!node.offsetParent;
+
+ node.classList.add(CSS_RENDER_MONITOR);
+}
+
+function unwatchForRender(node) {
+ var expando = node[EXPANDO_KEY] || {};
+ var proxy = expando.renderProxy;
+
+ if (proxy) {
+ helpers$1.each(ANIMATION_START_EVENTS, function(type) {
+ removeListener(node, type, proxy);
+ });
+
+ delete expando.renderProxy;
+ }
+
+ node.classList.remove(CSS_RENDER_MONITOR);
+}
+
+function addResizeListener(node, listener, chart) {
+ var expando = node[EXPANDO_KEY] || (node[EXPANDO_KEY] = {});
+
+ // Let's keep track of this added resizer and thus avoid DOM query when removing it.
+ var resizer = expando.resizer = createResizer(throttled(function() {
+ if (expando.resizer) {
+ var container = chart.options.maintainAspectRatio && node.parentNode;
+ var w = container ? container.clientWidth : 0;
+ listener(createEvent('resize', chart));
+ if (container && container.clientWidth < w && chart.canvas) {
+ // If the container size shrank during chart resize, let's assume
+ // scrollbar appeared. So we resize again with the scrollbar visible -
+ // effectively making chart smaller and the scrollbar hidden again.
+ // Because we are inside `throttled`, and currently `ticking`, scroll
+ // events are ignored during this whole 2 resize process.
+ // If we assumed wrong and something else happened, we are resizing
+ // twice in a frame (potential performance issue)
+ listener(createEvent('resize', chart));
+ }
+ }
+ }));
+
+ // The resizer needs to be attached to the node parent, so we first need to be
+ // sure that `node` is attached to the DOM before injecting the resizer element.
+ watchForRender(node, function() {
+ if (expando.resizer) {
+ var container = node.parentNode;
+ if (container && container !== resizer.parentNode) {
+ container.insertBefore(resizer, container.firstChild);
+ }
+
+ // The container size might have changed, let's reset the resizer state.
+ resizer._reset();
+ }
+ });
+}
+
+function removeResizeListener(node) {
+ var expando = node[EXPANDO_KEY] || {};
+ var resizer = expando.resizer;
+
+ delete expando.resizer;
+ unwatchForRender(node);
+
+ if (resizer && resizer.parentNode) {
+ resizer.parentNode.removeChild(resizer);
+ }
+}
+
+/**
+ * Injects CSS styles inline if the styles are not already present.
+ * @param {HTMLDocument|ShadowRoot} rootNode - the node to contain the <style>.
+ * @param {string} css - the CSS to be injected.
+ */
+function injectCSS(rootNode, css) {
+ // https://stackoverflow.com/q/3922139
+ var expando = rootNode[EXPANDO_KEY] || (rootNode[EXPANDO_KEY] = {});
+ if (!expando.containsStyles) {
+ expando.containsStyles = true;
+ css = '/* Chart.js */\n' + css;
+ var style = document.createElement('style');
+ style.setAttribute('type', 'text/css');
+ style.appendChild(document.createTextNode(css));
+ rootNode.appendChild(style);
+ }
+}
+
+var platform_dom$2 = {
+ /**
+ * When `true`, prevents the automatic injection of the stylesheet required to
+ * correctly detect when the chart is added to the DOM and then resized. This
+ * switch has been added to allow external stylesheet (`dist/Chart(.min)?.js`)
+ * to be manually imported to make this library compatible with any CSP.
+ * See https://github.com/chartjs/Chart.js/issues/5208
+ */
+ disableCSSInjection: false,
+
+ /**
+ * This property holds whether this platform is enabled for the current environment.
+ * Currently used by platform.js to select the proper implementation.
+ * @private
+ */
+ _enabled: typeof window !== 'undefined' && typeof document !== 'undefined',
+
+ /**
+ * Initializes resources that depend on platform options.
+ * @param {HTMLCanvasElement} canvas - The Canvas element.
+ * @private
+ */
+ _ensureLoaded: function(canvas) {
+ if (!this.disableCSSInjection) {
+ // If the canvas is in a shadow DOM, then the styles must also be inserted
+ // into the same shadow DOM.
+ // https://github.com/chartjs/Chart.js/issues/5763
+ var root = canvas.getRootNode ? canvas.getRootNode() : document;
+ var targetNode = root.host ? root : document.head;
+ injectCSS(targetNode, stylesheet);
+ }
+ },
+
+ acquireContext: function(item, config) {
+ if (typeof item === 'string') {
+ item = document.getElementById(item);
+ } else if (item.length) {
+ // Support for array based queries (such as jQuery)
+ item = item[0];
+ }
+
+ if (item && item.canvas) {
+ // Support for any object associated to a canvas (including a context2d)
+ item = item.canvas;
+ }
+
+ // To prevent canvas fingerprinting, some add-ons undefine the getContext
+ // method, for example: https://github.com/kkapsner/CanvasBlocker
+ // https://github.com/chartjs/Chart.js/issues/2807
+ var context = item && item.getContext && item.getContext('2d');
+
+ // `instanceof HTMLCanvasElement/CanvasRenderingContext2D` fails when the item is
+ // inside an iframe or when running in a protected environment. We could guess the
+ // types from their toString() value but let's keep things flexible and assume it's
+ // a sufficient condition if the item has a context2D which has item as `canvas`.
+ // https://github.com/chartjs/Chart.js/issues/3887
+ // https://github.com/chartjs/Chart.js/issues/4102
+ // https://github.com/chartjs/Chart.js/issues/4152
+ if (context && context.canvas === item) {
+ // Load platform resources on first chart creation, to make it possible to
+ // import the library before setting platform options.
+ this._ensureLoaded(item);
+ initCanvas(item, config);
+ return context;
+ }
+
+ return null;
+ },
+
+ releaseContext: function(context) {
+ var canvas = context.canvas;
+ if (!canvas[EXPANDO_KEY]) {
+ return;
+ }
+
+ var initial = canvas[EXPANDO_KEY].initial;
+ ['height', 'width'].forEach(function(prop) {
+ var value = initial[prop];
+ if (helpers$1.isNullOrUndef(value)) {
+ canvas.removeAttribute(prop);
+ } else {
+ canvas.setAttribute(prop, value);
+ }
+ });
+
+ helpers$1.each(initial.style || {}, function(value, key) {
+ canvas.style[key] = value;
+ });
+
+ // The canvas render size might have been changed (and thus the state stack discarded),
+ // we can't use save() and restore() to restore the initial state. So make sure that at
+ // least the canvas context is reset to the default state by setting the canvas width.
+ // https://www.w3.org/TR/2011/WD-html5-20110525/the-canvas-element.html
+ // eslint-disable-next-line no-self-assign
+ canvas.width = canvas.width;
+
+ delete canvas[EXPANDO_KEY];
+ },
+
+ addEventListener: function(chart, type, listener) {
+ var canvas = chart.canvas;
+ if (type === 'resize') {
+ // Note: the resize event is not supported on all browsers.
+ addResizeListener(canvas, listener, chart);
+ return;
+ }
+
+ var expando = listener[EXPANDO_KEY] || (listener[EXPANDO_KEY] = {});
+ var proxies = expando.proxies || (expando.proxies = {});
+ var proxy = proxies[chart.id + '_' + type] = function(event) {
+ listener(fromNativeEvent(event, chart));
+ };
+
+ addListener(canvas, type, proxy);
+ },
+
+ removeEventListener: function(chart, type, listener) {
+ var canvas = chart.canvas;
+ if (type === 'resize') {
+ // Note: the resize event is not supported on all browsers.
+ removeResizeListener(canvas);
+ return;
+ }
+
+ var expando = listener[EXPANDO_KEY] || {};
+ var proxies = expando.proxies || {};
+ var proxy = proxies[chart.id + '_' + type];
+ if (!proxy) {
+ return;
+ }
+
+ removeListener(canvas, type, proxy);
+ }
+};
+
+// DEPRECATIONS
+
+/**
+ * Provided for backward compatibility, use EventTarget.addEventListener instead.
+ * EventTarget.addEventListener compatibility: Chrome, Opera 7, Safari, FF1.5+, IE9+
+ * @see https://developer.mozilla.org/en-US/docs/Web/API/EventTarget/addEventListener
+ * @function Chart.helpers.addEvent
+ * @deprecated since version 2.7.0
+ * @todo remove at version 3
+ * @private
+ */
+helpers$1.addEvent = addListener;
+
+/**
+ * Provided for backward compatibility, use EventTarget.removeEventListener instead.
+ * EventTarget.removeEventListener compatibility: Chrome, Opera 7, Safari, FF1.5+, IE9+
+ * @see https://developer.mozilla.org/en-US/docs/Web/API/EventTarget/removeEventListener
+ * @function Chart.helpers.removeEvent
+ * @deprecated since version 2.7.0
+ * @todo remove at version 3
+ * @private
+ */
+helpers$1.removeEvent = removeListener; + +// @TODO Make possible to select another platform at build time.
+var implementation = platform_dom$2._enabled ? platform_dom$2 : platform_basic;
+
+/**
+ * @namespace Chart.platform
+ * @see https://chartjs.gitbooks.io/proposals/content/Platform.html
+ * @since 2.4.0
+ */
+var platform = helpers$1.extend({
+ /**
+ * @since 2.7.0
+ */
+ initialize: function() {},
+
+ /**
+ * Called at chart construction time, returns a context2d instance implementing
+ * the [W3C Canvas 2D Context API standard]{@link https://www.w3.org/TR/2dcontext/}.
+ * @param {*} item - The native item from which to acquire context (platform specific)
+ * @param {object} options - The chart options
+ * @returns {CanvasRenderingContext2D} context2d instance
+ */
+ acquireContext: function() {},
+
+ /**
+ * Called at chart destruction time, releases any resources associated to the context
+ * previously returned by the acquireContext() method.
+ * @param {CanvasRenderingContext2D} context - The context2d instance
+ * @returns {boolean} true if the method succeeded, else false
+ */
+ releaseContext: function() {},
+
+ /**
+ * Registers the specified listener on the given chart.
+ * @param {Chart} chart - Chart from which to listen for event
+ * @param {string} type - The ({@link IEvent}) type to listen for
+ * @param {function} listener - Receives a notification (an object that implements
+ * the {@link IEvent} interface) when an event of the specified type occurs.
+ */
+ addEventListener: function() {},
+
+ /**
+ * Removes the specified listener previously registered with addEventListener.
+ * @param {Chart} chart - Chart from which to remove the listener
+ * @param {string} type - The ({@link IEvent}) type to remove
+ * @param {function} listener - The listener function to remove from the event target.
+ */
+ removeEventListener: function() {}
+
+}, implementation); + +core_defaults._set('global', {
+ plugins: {}
+});
+
+/**
+ * The plugin service singleton
+ * @namespace Chart.plugins
+ * @since 2.1.0
+ */
+var core_plugins = {
+ /**
+ * Globally registered plugins.
+ * @private
+ */
+ _plugins: [],
+
+ /**
+ * This identifier is used to invalidate the descriptors cache attached to each chart
+ * when a global plugin is registered or unregistered. In this case, the cache ID is
+ * incremented and descriptors are regenerated during following API calls.
+ * @private
+ */
+ _cacheId: 0,
+
+ /**
+ * Registers the given plugin(s) if not already registered.
+ * @param {IPlugin[]|IPlugin} plugins plugin instance(s).
+ */
+ register: function(plugins) {
+ var p = this._plugins;
+ ([]).concat(plugins).forEach(function(plugin) {
+ if (p.indexOf(plugin) === -1) {
+ p.push(plugin);
+ }
+ });
+
+ this._cacheId++;
+ },
+
+ /**
+ * Unregisters the given plugin(s) only if registered.
+ * @param {IPlugin[]|IPlugin} plugins plugin instance(s).
+ */
+ unregister: function(plugins) {
+ var p = this._plugins;
+ ([]).concat(plugins).forEach(function(plugin) {
+ var idx = p.indexOf(plugin);
+ if (idx !== -1) {
+ p.splice(idx, 1);
+ }
+ });
+
+ this._cacheId++;
+ },
+
+ /**
+ * Remove all registered plugins.
+ * @since 2.1.5
+ */
+ clear: function() {
+ this._plugins = [];
+ this._cacheId++;
+ },
+
+ /**
+ * Returns the number of registered plugins?
+ * @returns {number}
+ * @since 2.1.5
+ */
+ count: function() {
+ return this._plugins.length;
+ },
+
+ /**
+ * Returns all registered plugin instances.
+ * @returns {IPlugin[]} array of plugin objects.
+ * @since 2.1.5
+ */
+ getAll: function() {
+ return this._plugins;
+ },
+
+ /**
+ * Calls enabled plugins for `chart` on the specified hook and with the given args.
+ * This method immediately returns as soon as a plugin explicitly returns false. The
+ * returned value can be used, for instance, to interrupt the current action.
+ * @param {Chart} chart - The chart instance for which plugins should be called.
+ * @param {string} hook - The name of the plugin method to call (e.g. 'beforeUpdate').
+ * @param {Array} [args] - Extra arguments to apply to the hook call.
+ * @returns {boolean} false if any of the plugins return false, else returns true.
+ */
+ notify: function(chart, hook, args) {
+ var descriptors = this.descriptors(chart);
+ var ilen = descriptors.length;
+ var i, descriptor, plugin, params, method;
+
+ for (i = 0; i < ilen; ++i) {
+ descriptor = descriptors[i];
+ plugin = descriptor.plugin;
+ method = plugin[hook];
+ if (typeof method === 'function') {
+ params = [chart].concat(args || []);
+ params.push(descriptor.options);
+ if (method.apply(plugin, params) === false) {
+ return false;
+ }
+ }
+ }
+
+ return true;
+ },
+
+ /**
+ * Returns descriptors of enabled plugins for the given chart.
+ * @returns {object[]} [{ plugin, options }]
+ * @private
+ */
+ descriptors: function(chart) {
+ var cache = chart.$plugins || (chart.$plugins = {});
+ if (cache.id === this._cacheId) {
+ return cache.descriptors;
+ }
+
+ var plugins = [];
+ var descriptors = [];
+ var config = (chart && chart.config) || {};
+ var options = (config.options && config.options.plugins) || {};
+
+ this._plugins.concat(config.plugins || []).forEach(function(plugin) {
+ var idx = plugins.indexOf(plugin);
+ if (idx !== -1) {
+ return;
+ }
+
+ var id = plugin.id;
+ var opts = options[id];
+ if (opts === false) {
+ return;
+ }
+
+ if (opts === true) {
+ opts = helpers$1.clone(core_defaults.global.plugins[id]);
+ }
+
+ plugins.push(plugin);
+ descriptors.push({
+ plugin: plugin,
+ options: opts || {}
+ });
+ });
+
+ cache.descriptors = descriptors;
+ cache.id = this._cacheId;
+ return descriptors;
+ },
+
+ /**
+ * Invalidates cache for the given chart: descriptors hold a reference on plugin option,
+ * but in some cases, this reference can be changed by the user when updating options.
+ * https://github.com/chartjs/Chart.js/issues/5111#issuecomment-355934167
+ * @private
+ */
+ _invalidate: function(chart) {
+ delete chart.$plugins;
+ }
+}; + +var core_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, scaleDefaults) {
+ this.constructors[type] = scaleConstructor;
+ this.defaults[type] = helpers$1.clone(scaleDefaults);
+ },
+ 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$1.merge(Object.create(null), [core_defaults.scale, this.defaults[type]]) : {};
+ },
+ updateScaleDefaults: function(type, additions) {
+ var me = this;
+ if (me.defaults.hasOwnProperty(type)) {
+ me.defaults[type] = helpers$1.extend(me.defaults[type], additions);
+ }
+ },
+ addScalesToLayout: function(chart) {
+ // Adds each scale to the chart.boxes array to be sized accordingly
+ helpers$1.each(chart.scales, function(scale) {
+ // Set ILayoutItem parameters for backwards compatibility
+ scale.fullWidth = scale.options.fullWidth;
+ scale.position = scale.options.position;
+ scale.weight = scale.options.weight;
+ core_layouts.addBox(chart, scale);
+ });
+ }
+}; + +var valueOrDefault$8 = helpers$1.valueOrDefault;
+var getRtlHelper = helpers$1.rtl.getRtlAdapter;
+
+core_defaults._set('global', {
+ tooltips: {
+ enabled: true,
+ custom: null,
+ mode: 'nearest',
+ position: 'average',
+ intersect: true,
+ backgroundColor: 'rgba(0,0,0,0.8)',
+ titleFontStyle: 'bold',
+ titleSpacing: 2,
+ titleMarginBottom: 6,
+ titleFontColor: '#fff',
+ titleAlign: 'left',
+ bodySpacing: 2,
+ bodyFontColor: '#fff',
+ bodyAlign: 'left',
+ footerFontStyle: 'bold',
+ footerSpacing: 2,
+ footerMarginTop: 6,
+ footerFontColor: '#fff',
+ footerAlign: 'left',
+ yPadding: 6,
+ xPadding: 6,
+ caretPadding: 2,
+ caretSize: 5,
+ cornerRadius: 6,
+ multiKeyBackground: '#fff',
+ displayColors: true,
+ borderColor: 'rgba(0,0,0,0)',
+ borderWidth: 0,
+ callbacks: {
+ // Args are: (tooltipItems, data)
+ beforeTitle: helpers$1.noop,
+ title: function(tooltipItems, data) {
+ var title = '';
+ var labels = data.labels;
+ var labelCount = labels ? labels.length : 0;
+
+ if (tooltipItems.length > 0) {
+ var item = tooltipItems[0];
+ if (item.label) {
+ title = item.label;
+ } else if (item.xLabel) {
+ title = item.xLabel;
+ } else if (labelCount > 0 && item.index < labelCount) {
+ title = labels[item.index];
+ }
+ }
+
+ return title;
+ },
+ afterTitle: helpers$1.noop,
+
+ // Args are: (tooltipItems, data)
+ beforeBody: helpers$1.noop,
+
+ // Args are: (tooltipItem, data)
+ beforeLabel: helpers$1.noop,
+ label: function(tooltipItem, data) {
+ var label = data.datasets[tooltipItem.datasetIndex].label || '';
+
+ if (label) {
+ label += ': ';
+ }
+ if (!helpers$1.isNullOrUndef(tooltipItem.value)) {
+ label += tooltipItem.value;
+ } else {
+ label += tooltipItem.yLabel;
+ }
+ return label;
+ },
+ labelColor: function(tooltipItem, chart) {
+ var meta = chart.getDatasetMeta(tooltipItem.datasetIndex);
+ var activeElement = meta.data[tooltipItem.index];
+ var view = activeElement._view;
+ return {
+ borderColor: view.borderColor,
+ backgroundColor: view.backgroundColor
+ };
+ },
+ labelTextColor: function() {
+ return this._options.bodyFontColor;
+ },
+ afterLabel: helpers$1.noop,
+
+ // Args are: (tooltipItems, data)
+ afterBody: helpers$1.noop,
+
+ // Args are: (tooltipItems, data)
+ beforeFooter: helpers$1.noop,
+ footer: helpers$1.noop,
+ afterFooter: helpers$1.noop
+ }
+ }
+});
+
+var positioners = {
+ /**
+ * Average mode places the tooltip at the average position of the elements shown
+ * @function Chart.Tooltip.positioners.average
+ * @param elements {ChartElement[]} the elements being displayed in the tooltip
+ * @returns {object} tooltip position
+ */
+ average: function(elements) {
+ if (!elements.length) {
+ return false;
+ }
+
+ var i, len;
+ var x = 0;
+ var y = 0;
+ var count = 0;
+
+ for (i = 0, len = elements.length; i < len; ++i) {
+ var el = elements[i];
+ if (el && el.hasValue()) {
+ var pos = el.tooltipPosition();
+ x += pos.x;
+ y += pos.y;
+ ++count;
+ }
+ }
+
+ return {
+ x: x / count,
+ y: y / count
+ };
+ },
+
+ /**
+ * Gets the tooltip position nearest of the item nearest to the event position
+ * @function Chart.Tooltip.positioners.nearest
+ * @param elements {Chart.Element[]} the tooltip elements
+ * @param eventPosition {object} the position of the event in canvas coordinates
+ * @returns {object} the tooltip position
+ */
+ nearest: function(elements, eventPosition) {
+ var x = eventPosition.x;
+ var y = eventPosition.y;
+ var minDistance = Number.POSITIVE_INFINITY;
+ var i, len, nearestElement;
+
+ for (i = 0, len = elements.length; i < len; ++i) {
+ var el = elements[i];
+ if (el && el.hasValue()) {
+ var center = el.getCenterPoint();
+ var d = helpers$1.distanceBetweenPoints(eventPosition, center);
+
+ if (d < minDistance) {
+ minDistance = d;
+ nearestElement = el;
+ }
+ }
+ }
+
+ if (nearestElement) {
+ var tp = nearestElement.tooltipPosition();
+ x = tp.x;
+ y = tp.y;
+ }
+
+ return {
+ x: x,
+ y: y
+ };
+ }
+};
+
+// Helper to push or concat based on if the 2nd parameter is an array or not
+function pushOrConcat(base, toPush) {
+ if (toPush) {
+ if (helpers$1.isArray(toPush)) {
+ // base = base.concat(toPush);
+ Array.prototype.push.apply(base, toPush);
+ } else {
+ base.push(toPush);
+ }
+ }
+
+ return base;
+}
+
+/**
+ * Returns array of strings split by newline
+ * @param {string} value - The value to split by newline.
+ * @returns {string[]} value if newline present - Returned from String split() method
+ * @function
+ */
+function splitNewlines(str) {
+ if ((typeof str === 'string' || str instanceof String) && str.indexOf('\n') > -1) {
+ return str.split('\n');
+ }
+ return str;
+}
+
+
+/**
+ * Private helper to create a tooltip item model
+ * @param element - the chart element (point, arc, bar) to create the tooltip item for
+ * @return new tooltip item
+ */
+function createTooltipItem(element) {
+ var xScale = element._xScale;
+ var yScale = element._yScale || element._scale; // handle radar || polarArea charts
+ var index = element._index;
+ var datasetIndex = element._datasetIndex;
+ var controller = element._chart.getDatasetMeta(datasetIndex).controller;
+ var indexScale = controller._getIndexScale();
+ var valueScale = controller._getValueScale();
+
+ return {
+ xLabel: xScale ? xScale.getLabelForIndex(index, datasetIndex) : '',
+ yLabel: yScale ? yScale.getLabelForIndex(index, datasetIndex) : '',
+ label: indexScale ? '' + indexScale.getLabelForIndex(index, datasetIndex) : '',
+ value: valueScale ? '' + valueScale.getLabelForIndex(index, datasetIndex) : '',
+ index: index,
+ datasetIndex: datasetIndex,
+ x: element._model.x,
+ y: element._model.y
+ };
+}
+
+/**
+ * Helper to get the reset model for the tooltip
+ * @param tooltipOpts {object} the tooltip options
+ */
+function getBaseModel(tooltipOpts) {
+ var globalDefaults = core_defaults.global;
+
+ return {
+ // Positioning
+ xPadding: tooltipOpts.xPadding,
+ yPadding: tooltipOpts.yPadding,
+ xAlign: tooltipOpts.xAlign,
+ yAlign: tooltipOpts.yAlign,
+
+ // Drawing direction and text direction
+ rtl: tooltipOpts.rtl,
+ textDirection: tooltipOpts.textDirection,
+
+ // Body
+ bodyFontColor: tooltipOpts.bodyFontColor,
+ _bodyFontFamily: valueOrDefault$8(tooltipOpts.bodyFontFamily, globalDefaults.defaultFontFamily),
+ _bodyFontStyle: valueOrDefault$8(tooltipOpts.bodyFontStyle, globalDefaults.defaultFontStyle),
+ _bodyAlign: tooltipOpts.bodyAlign,
+ bodyFontSize: valueOrDefault$8(tooltipOpts.bodyFontSize, globalDefaults.defaultFontSize),
+ bodySpacing: tooltipOpts.bodySpacing,
+
+ // Title
+ titleFontColor: tooltipOpts.titleFontColor,
+ _titleFontFamily: valueOrDefault$8(tooltipOpts.titleFontFamily, globalDefaults.defaultFontFamily),
+ _titleFontStyle: valueOrDefault$8(tooltipOpts.titleFontStyle, globalDefaults.defaultFontStyle),
+ titleFontSize: valueOrDefault$8(tooltipOpts.titleFontSize, globalDefaults.defaultFontSize),
+ _titleAlign: tooltipOpts.titleAlign,
+ titleSpacing: tooltipOpts.titleSpacing,
+ titleMarginBottom: tooltipOpts.titleMarginBottom,
+
+ // Footer
+ footerFontColor: tooltipOpts.footerFontColor,
+ _footerFontFamily: valueOrDefault$8(tooltipOpts.footerFontFamily, globalDefaults.defaultFontFamily),
+ _footerFontStyle: valueOrDefault$8(tooltipOpts.footerFontStyle, globalDefaults.defaultFontStyle),
+ footerFontSize: valueOrDefault$8(tooltipOpts.footerFontSize, globalDefaults.defaultFontSize),
+ _footerAlign: tooltipOpts.footerAlign,
+ footerSpacing: tooltipOpts.footerSpacing,
+ footerMarginTop: tooltipOpts.footerMarginTop,
+
+ // Appearance
+ caretSize: tooltipOpts.caretSize,
+ cornerRadius: tooltipOpts.cornerRadius,
+ backgroundColor: tooltipOpts.backgroundColor,
+ opacity: 0,
+ legendColorBackground: tooltipOpts.multiKeyBackground,
+ displayColors: tooltipOpts.displayColors,
+ borderColor: tooltipOpts.borderColor,
+ borderWidth: tooltipOpts.borderWidth
+ };
+}
+
+/**
+ * Get the size of the tooltip
+ */
+function getTooltipSize(tooltip, model) {
+ var ctx = tooltip._chart.ctx;
+
+ var height = model.yPadding * 2; // Tooltip Padding
+ var width = 0;
+
+ // Count of all lines in the body
+ var body = model.body;
+ var combinedBodyLength = body.reduce(function(count, bodyItem) {
+ return count + bodyItem.before.length + bodyItem.lines.length + bodyItem.after.length;
+ }, 0);
+ combinedBodyLength += model.beforeBody.length + model.afterBody.length;
+
+ var titleLineCount = model.title.length;
+ var footerLineCount = model.footer.length;
+ var titleFontSize = model.titleFontSize;
+ var bodyFontSize = model.bodyFontSize;
+ var footerFontSize = model.footerFontSize;
+
+ height += titleLineCount * titleFontSize; // Title Lines
+ height += titleLineCount ? (titleLineCount - 1) * model.titleSpacing : 0; // Title Line Spacing
+ height += titleLineCount ? model.titleMarginBottom : 0; // Title's bottom Margin
+ height += combinedBodyLength * bodyFontSize; // Body Lines
+ height += combinedBodyLength ? (combinedBodyLength - 1) * model.bodySpacing : 0; // Body Line Spacing
+ height += footerLineCount ? model.footerMarginTop : 0; // Footer Margin
+ height += footerLineCount * (footerFontSize); // Footer Lines
+ height += footerLineCount ? (footerLineCount - 1) * model.footerSpacing : 0; // Footer Line Spacing
+
+ // Title width
+ var widthPadding = 0;
+ var maxLineWidth = function(line) {
+ width = Math.max(width, ctx.measureText(line).width + widthPadding);
+ };
+
+ ctx.font = helpers$1.fontString(titleFontSize, model._titleFontStyle, model._titleFontFamily);
+ helpers$1.each(model.title, maxLineWidth);
+
+ // Body width
+ ctx.font = helpers$1.fontString(bodyFontSize, model._bodyFontStyle, model._bodyFontFamily);
+ helpers$1.each(model.beforeBody.concat(model.afterBody), maxLineWidth);
+
+ // Body lines may include some extra width due to the color box
+ widthPadding = model.displayColors ? (bodyFontSize + 2) : 0;
+ helpers$1.each(body, function(bodyItem) {
+ helpers$1.each(bodyItem.before, maxLineWidth);
+ helpers$1.each(bodyItem.lines, maxLineWidth);
+ helpers$1.each(bodyItem.after, maxLineWidth);
+ });
+
+ // Reset back to 0
+ widthPadding = 0;
+
+ // Footer width
+ ctx.font = helpers$1.fontString(footerFontSize, model._footerFontStyle, model._footerFontFamily);
+ helpers$1.each(model.footer, maxLineWidth);
+
+ // Add padding
+ width += 2 * model.xPadding;
+
+ return {
+ width: width,
+ height: height
+ };
+}
+
+/**
+ * Helper to get the alignment of a tooltip given the size
+ */
+function determineAlignment(tooltip, size) {
+ var model = tooltip._model;
+ var chart = tooltip._chart;
+ var chartArea = tooltip._chart.chartArea;
+ var xAlign = 'center';
+ var yAlign = 'center';
+
+ if (model.y < size.height) {
+ yAlign = 'top';
+ } else if (model.y > (chart.height - size.height)) {
+ yAlign = 'bottom';
+ }
+
+ var lf, rf; // functions to determine left, right alignment
+ var olf, orf; // functions to determine if left/right alignment causes tooltip to go outside chart
+ var yf; // function to get the y alignment if the tooltip goes outside of the left or right edges
+ var midX = (chartArea.left + chartArea.right) / 2;
+ var midY = (chartArea.top + chartArea.bottom) / 2;
+
+ if (yAlign === 'center') {
+ lf = function(x) {
+ return x <= midX;
+ };
+ rf = function(x) {
+ return x > midX;
+ };
+ } else {
+ lf = function(x) {
+ return x <= (size.width / 2);
+ };
+ rf = function(x) {
+ return x >= (chart.width - (size.width / 2));
+ };
+ }
+
+ olf = function(x) {
+ return x + size.width + model.caretSize + model.caretPadding > chart.width;
+ };
+ orf = function(x) {
+ return x - size.width - model.caretSize - model.caretPadding < 0;
+ };
+ yf = function(y) {
+ return y <= midY ? 'top' : 'bottom';
+ };
+
+ if (lf(model.x)) {
+ xAlign = 'left';
+
+ // Is tooltip too wide and goes over the right side of the chart.?
+ if (olf(model.x)) {
+ xAlign = 'center';
+ yAlign = yf(model.y);
+ }
+ } else if (rf(model.x)) {
+ xAlign = 'right';
+
+ // Is tooltip too wide and goes outside left edge of canvas?
+ if (orf(model.x)) {
+ xAlign = 'center';
+ yAlign = yf(model.y);
+ }
+ }
+
+ var opts = tooltip._options;
+ return {
+ xAlign: opts.xAlign ? opts.xAlign : xAlign,
+ yAlign: opts.yAlign ? opts.yAlign : yAlign
+ };
+}
+
+/**
+ * Helper to get the location a tooltip needs to be placed at given the initial position (via the vm) and the size and alignment
+ */
+function getBackgroundPoint(vm, size, alignment, chart) {
+ // Background Position
+ var x = vm.x;
+ var y = vm.y;
+
+ var caretSize = vm.caretSize;
+ var caretPadding = vm.caretPadding;
+ var cornerRadius = vm.cornerRadius;
+ var xAlign = alignment.xAlign;
+ var yAlign = alignment.yAlign;
+ var paddingAndSize = caretSize + caretPadding;
+ var radiusAndPadding = cornerRadius + caretPadding;
+
+ if (xAlign === 'right') {
+ x -= size.width;
+ } else if (xAlign === 'center') {
+ x -= (size.width / 2);
+ if (x + size.width > chart.width) {
+ x = chart.width - size.width;
+ }
+ if (x < 0) {
+ x = 0;
+ }
+ }
+
+ if (yAlign === 'top') {
+ y += paddingAndSize;
+ } else if (yAlign === 'bottom') {
+ y -= size.height + paddingAndSize;
+ } else {
+ y -= (size.height / 2);
+ }
+
+ if (yAlign === 'center') {
+ if (xAlign === 'left') {
+ x += paddingAndSize;
+ } else if (xAlign === 'right') {
+ x -= paddingAndSize;
+ }
+ } else if (xAlign === 'left') {
+ x -= radiusAndPadding;
+ } else if (xAlign === 'right') {
+ x += radiusAndPadding;
+ }
+
+ return {
+ x: x,
+ y: y
+ };
+}
+
+function getAlignedX(vm, align) {
+ return align === 'center'
+ ? vm.x + vm.width / 2
+ : align === 'right'
+ ? vm.x + vm.width - vm.xPadding
+ : vm.x + vm.xPadding;
+}
+
+/**
+ * Helper to build before and after body lines
+ */
+function getBeforeAfterBodyLines(callback) {
+ return pushOrConcat([], splitNewlines(callback));
+}
+
+var exports$4 = core_element.extend({
+ initialize: function() {
+ this._model = getBaseModel(this._options);
+ this._lastActive = [];
+ },
+
+ // Get the title
+ // Args are: (tooltipItem, data)
+ getTitle: function() {
+ var me = this;
+ var opts = me._options;
+ var callbacks = opts.callbacks;
+
+ var beforeTitle = callbacks.beforeTitle.apply(me, arguments);
+ var title = callbacks.title.apply(me, arguments);
+ var afterTitle = callbacks.afterTitle.apply(me, arguments);
+
+ var lines = [];
+ lines = pushOrConcat(lines, splitNewlines(beforeTitle));
+ lines = pushOrConcat(lines, splitNewlines(title));
+ lines = pushOrConcat(lines, splitNewlines(afterTitle));
+
+ return lines;
+ },
+
+ // Args are: (tooltipItem, data)
+ getBeforeBody: function() {
+ return getBeforeAfterBodyLines(this._options.callbacks.beforeBody.apply(this, arguments));
+ },
+
+ // Args are: (tooltipItem, data)
+ getBody: function(tooltipItems, data) {
+ var me = this;
+ var callbacks = me._options.callbacks;
+ var bodyItems = [];
+
+ helpers$1.each(tooltipItems, function(tooltipItem) {
+ var bodyItem = {
+ before: [],
+ lines: [],
+ after: []
+ };
+ pushOrConcat(bodyItem.before, splitNewlines(callbacks.beforeLabel.call(me, tooltipItem, data)));
+ pushOrConcat(bodyItem.lines, callbacks.label.call(me, tooltipItem, data));
+ pushOrConcat(bodyItem.after, splitNewlines(callbacks.afterLabel.call(me, tooltipItem, data)));
+
+ bodyItems.push(bodyItem);
+ });
+
+ return bodyItems;
+ },
+
+ // Args are: (tooltipItem, data)
+ getAfterBody: function() {
+ return getBeforeAfterBodyLines(this._options.callbacks.afterBody.apply(this, arguments));
+ },
+
+ // Get the footer and beforeFooter and afterFooter lines
+ // Args are: (tooltipItem, data)
+ getFooter: function() {
+ var me = this;
+ var callbacks = me._options.callbacks;
+
+ var beforeFooter = callbacks.beforeFooter.apply(me, arguments);
+ var footer = callbacks.footer.apply(me, arguments);
+ var afterFooter = callbacks.afterFooter.apply(me, arguments);
+
+ var lines = [];
+ lines = pushOrConcat(lines, splitNewlines(beforeFooter));
+ lines = pushOrConcat(lines, splitNewlines(footer));
+ lines = pushOrConcat(lines, splitNewlines(afterFooter));
+
+ return lines;
+ },
+
+ update: function(changed) {
+ var me = this;
+ var opts = me._options;
+
+ // Need to regenerate the model because its faster than using extend and it is necessary due to the optimization in Chart.Element.transition
+ // that does _view = _model if ease === 1. This causes the 2nd tooltip update to set properties in both the view and model at the same time
+ // which breaks any animations.
+ var existingModel = me._model;
+ var model = me._model = getBaseModel(opts);
+ var active = me._active;
+
+ var data = me._data;
+
+ // In the case where active.length === 0 we need to keep these at existing values for good animations
+ var alignment = {
+ xAlign: existingModel.xAlign,
+ yAlign: existingModel.yAlign
+ };
+ var backgroundPoint = {
+ x: existingModel.x,
+ y: existingModel.y
+ };
+ var tooltipSize = {
+ width: existingModel.width,
+ height: existingModel.height
+ };
+ var tooltipPosition = {
+ x: existingModel.caretX,
+ y: existingModel.caretY
+ };
+
+ var i, len;
+
+ if (active.length) {
+ model.opacity = 1;
+
+ var labelColors = [];
+ var labelTextColors = [];
+ tooltipPosition = positioners[opts.position].call(me, active, me._eventPosition);
+
+ var tooltipItems = [];
+ for (i = 0, len = active.length; i < len; ++i) {
+ tooltipItems.push(createTooltipItem(active[i]));
+ }
+
+ // If the user provided a filter function, use it to modify the tooltip items
+ if (opts.filter) {
+ tooltipItems = tooltipItems.filter(function(a) {
+ return opts.filter(a, data);
+ });
+ }
+
+ // If the user provided a sorting function, use it to modify the tooltip items
+ if (opts.itemSort) {
+ tooltipItems = tooltipItems.sort(function(a, b) {
+ return opts.itemSort(a, b, data);
+ });
+ }
+
+ // Determine colors for boxes
+ helpers$1.each(tooltipItems, function(tooltipItem) {
+ labelColors.push(opts.callbacks.labelColor.call(me, tooltipItem, me._chart));
+ labelTextColors.push(opts.callbacks.labelTextColor.call(me, tooltipItem, me._chart));
+ });
+
+
+ // Build the Text Lines
+ model.title = me.getTitle(tooltipItems, data);
+ model.beforeBody = me.getBeforeBody(tooltipItems, data);
+ model.body = me.getBody(tooltipItems, data);
+ model.afterBody = me.getAfterBody(tooltipItems, data);
+ model.footer = me.getFooter(tooltipItems, data);
+
+ // Initial positioning and colors
+ model.x = tooltipPosition.x;
+ model.y = tooltipPosition.y;
+ model.caretPadding = opts.caretPadding;
+ model.labelColors = labelColors;
+ model.labelTextColors = labelTextColors;
+
+ // data points
+ model.dataPoints = tooltipItems;
+
+ // We need to determine alignment of the tooltip
+ tooltipSize = getTooltipSize(this, model);
+ alignment = determineAlignment(this, tooltipSize);
+ // Final Size and Position
+ backgroundPoint = getBackgroundPoint(model, tooltipSize, alignment, me._chart);
+ } else {
+ model.opacity = 0;
+ }
+
+ model.xAlign = alignment.xAlign;
+ model.yAlign = alignment.yAlign;
+ model.x = backgroundPoint.x;
+ model.y = backgroundPoint.y;
+ model.width = tooltipSize.width;
+ model.height = tooltipSize.height;
+
+ // Point where the caret on the tooltip points to
+ model.caretX = tooltipPosition.x;
+ model.caretY = tooltipPosition.y;
+
+ me._model = model;
+
+ if (changed && opts.custom) {
+ opts.custom.call(me, model);
+ }
+
+ return me;
+ },
+
+ drawCaret: function(tooltipPoint, size) {
+ var ctx = this._chart.ctx;
+ var vm = this._view;
+ var caretPosition = this.getCaretPosition(tooltipPoint, size, vm);
+
+ ctx.lineTo(caretPosition.x1, caretPosition.y1);
+ ctx.lineTo(caretPosition.x2, caretPosition.y2);
+ ctx.lineTo(caretPosition.x3, caretPosition.y3);
+ },
+ getCaretPosition: function(tooltipPoint, size, vm) {
+ var x1, x2, x3, y1, y2, y3;
+ var caretSize = vm.caretSize;
+ var cornerRadius = vm.cornerRadius;
+ var xAlign = vm.xAlign;
+ var yAlign = vm.yAlign;
+ var ptX = tooltipPoint.x;
+ var ptY = tooltipPoint.y;
+ var width = size.width;
+ var height = size.height;
+
+ if (yAlign === 'center') {
+ y2 = ptY + (height / 2);
+
+ if (xAlign === 'left') {
+ x1 = ptX;
+ x2 = x1 - caretSize;
+ x3 = x1;
+
+ y1 = y2 + caretSize;
+ y3 = y2 - caretSize;
+ } else {
+ x1 = ptX + width;
+ x2 = x1 + caretSize;
+ x3 = x1;
+
+ y1 = y2 - caretSize;
+ y3 = y2 + caretSize;
+ }
+ } else {
+ if (xAlign === 'left') {
+ x2 = ptX + cornerRadius + (caretSize);
+ x1 = x2 - caretSize;
+ x3 = x2 + caretSize;
+ } else if (xAlign === 'right') {
+ x2 = ptX + width - cornerRadius - caretSize;
+ x1 = x2 - caretSize;
+ x3 = x2 + caretSize;
+ } else {
+ x2 = vm.caretX;
+ x1 = x2 - caretSize;
+ x3 = x2 + caretSize;
+ }
+ if (yAlign === 'top') {
+ y1 = ptY;
+ y2 = y1 - caretSize;
+ y3 = y1;
+ } else {
+ y1 = ptY + height;
+ y2 = y1 + caretSize;
+ y3 = y1;
+ // invert drawing order
+ var tmp = x3;
+ x3 = x1;
+ x1 = tmp;
+ }
+ }
+ return {x1: x1, x2: x2, x3: x3, y1: y1, y2: y2, y3: y3};
+ },
+
+ drawTitle: function(pt, vm, ctx) {
+ var title = vm.title;
+ var length = title.length;
+ var titleFontSize, titleSpacing, i;
+
+ if (length) {
+ var rtlHelper = getRtlHelper(vm.rtl, vm.x, vm.width);
+
+ pt.x = getAlignedX(vm, vm._titleAlign);
+
+ ctx.textAlign = rtlHelper.textAlign(vm._titleAlign);
+ ctx.textBaseline = 'middle';
+
+ titleFontSize = vm.titleFontSize;
+ titleSpacing = vm.titleSpacing;
+
+ ctx.fillStyle = vm.titleFontColor;
+ ctx.font = helpers$1.fontString(titleFontSize, vm._titleFontStyle, vm._titleFontFamily);
+
+ for (i = 0; i < length; ++i) {
+ ctx.fillText(title[i], rtlHelper.x(pt.x), pt.y + titleFontSize / 2);
+ pt.y += titleFontSize + titleSpacing; // Line Height and spacing
+
+ if (i + 1 === length) {
+ pt.y += vm.titleMarginBottom - titleSpacing; // If Last, add margin, remove spacing
+ }
+ }
+ }
+ },
+
+ drawBody: function(pt, vm, ctx) {
+ var bodyFontSize = vm.bodyFontSize;
+ var bodySpacing = vm.bodySpacing;
+ var bodyAlign = vm._bodyAlign;
+ var body = vm.body;
+ var drawColorBoxes = vm.displayColors;
+ var xLinePadding = 0;
+ var colorX = drawColorBoxes ? getAlignedX(vm, 'left') : 0;
+
+ var rtlHelper = getRtlHelper(vm.rtl, vm.x, vm.width);
+
+ var fillLineOfText = function(line) {
+ ctx.fillText(line, rtlHelper.x(pt.x + xLinePadding), pt.y + bodyFontSize / 2);
+ pt.y += bodyFontSize + bodySpacing;
+ };
+
+ var bodyItem, textColor, labelColors, lines, i, j, ilen, jlen;
+ var bodyAlignForCalculation = rtlHelper.textAlign(bodyAlign);
+
+ ctx.textAlign = bodyAlign;
+ ctx.textBaseline = 'middle';
+ ctx.font = helpers$1.fontString(bodyFontSize, vm._bodyFontStyle, vm._bodyFontFamily);
+
+ pt.x = getAlignedX(vm, bodyAlignForCalculation);
+
+ // Before body lines
+ ctx.fillStyle = vm.bodyFontColor;
+ helpers$1.each(vm.beforeBody, fillLineOfText);
+
+ xLinePadding = drawColorBoxes && bodyAlignForCalculation !== 'right'
+ ? bodyAlign === 'center' ? (bodyFontSize / 2 + 1) : (bodyFontSize + 2)
+ : 0;
+
+ // Draw body lines now
+ for (i = 0, ilen = body.length; i < ilen; ++i) {
+ bodyItem = body[i];
+ textColor = vm.labelTextColors[i];
+ labelColors = vm.labelColors[i];
+
+ ctx.fillStyle = textColor;
+ helpers$1.each(bodyItem.before, fillLineOfText);
+
+ lines = bodyItem.lines;
+ for (j = 0, jlen = lines.length; j < jlen; ++j) {
+ // Draw Legend-like boxes if needed
+ if (drawColorBoxes) {
+ var rtlColorX = rtlHelper.x(colorX);
+
+ // Fill a white rect so that colours merge nicely if the opacity is < 1
+ ctx.fillStyle = vm.legendColorBackground;
+ ctx.fillRect(rtlHelper.leftForLtr(rtlColorX, bodyFontSize), pt.y, bodyFontSize, bodyFontSize);
+
+ // Border
+ ctx.lineWidth = 1;
+ ctx.strokeStyle = labelColors.borderColor;
+ ctx.strokeRect(rtlHelper.leftForLtr(rtlColorX, bodyFontSize), pt.y, bodyFontSize, bodyFontSize);
+
+ // Inner square
+ ctx.fillStyle = labelColors.backgroundColor;
+ ctx.fillRect(rtlHelper.leftForLtr(rtlHelper.xPlus(rtlColorX, 1), bodyFontSize - 2), pt.y + 1, bodyFontSize - 2, bodyFontSize - 2);
+ ctx.fillStyle = textColor;
+ }
+
+ fillLineOfText(lines[j]);
+ }
+
+ helpers$1.each(bodyItem.after, fillLineOfText);
+ }
+
+ // Reset back to 0 for after body
+ xLinePadding = 0;
+
+ // After body lines
+ helpers$1.each(vm.afterBody, fillLineOfText);
+ pt.y -= bodySpacing; // Remove last body spacing
+ },
+
+ drawFooter: function(pt, vm, ctx) {
+ var footer = vm.footer;
+ var length = footer.length;
+ var footerFontSize, i;
+
+ if (length) {
+ var rtlHelper = getRtlHelper(vm.rtl, vm.x, vm.width);
+
+ pt.x = getAlignedX(vm, vm._footerAlign);
+ pt.y += vm.footerMarginTop;
+
+ ctx.textAlign = rtlHelper.textAlign(vm._footerAlign);
+ ctx.textBaseline = 'middle';
+
+ footerFontSize = vm.footerFontSize;
+
+ ctx.fillStyle = vm.footerFontColor;
+ ctx.font = helpers$1.fontString(footerFontSize, vm._footerFontStyle, vm._footerFontFamily);
+
+ for (i = 0; i < length; ++i) {
+ ctx.fillText(footer[i], rtlHelper.x(pt.x), pt.y + footerFontSize / 2);
+ pt.y += footerFontSize + vm.footerSpacing;
+ }
+ }
+ },
+
+ drawBackground: function(pt, vm, ctx, tooltipSize) {
+ ctx.fillStyle = vm.backgroundColor;
+ ctx.strokeStyle = vm.borderColor;
+ ctx.lineWidth = vm.borderWidth;
+ var xAlign = vm.xAlign;
+ var yAlign = vm.yAlign;
+ var x = pt.x;
+ var y = pt.y;
+ var width = tooltipSize.width;
+ var height = tooltipSize.height;
+ var radius = vm.cornerRadius;
+
+ ctx.beginPath();
+ ctx.moveTo(x + radius, y);
+ if (yAlign === 'top') {
+ this.drawCaret(pt, tooltipSize);
+ }
+ ctx.lineTo(x + width - radius, y);
+ ctx.quadraticCurveTo(x + width, y, x + width, y + radius);
+ if (yAlign === 'center' && xAlign === 'right') {
+ this.drawCaret(pt, tooltipSize);
+ }
+ ctx.lineTo(x + width, y + height - radius);
+ ctx.quadraticCurveTo(x + width, y + height, x + width - radius, y + height);
+ if (yAlign === 'bottom') {
+ this.drawCaret(pt, tooltipSize);
+ }
+ ctx.lineTo(x + radius, y + height);
+ ctx.quadraticCurveTo(x, y + height, x, y + height - radius);
+ if (yAlign === 'center' && xAlign === 'left') {
+ this.drawCaret(pt, tooltipSize);
+ }
+ ctx.lineTo(x, y + radius);
+ ctx.quadraticCurveTo(x, y, x + radius, y);
+ ctx.closePath();
+
+ ctx.fill();
+
+ if (vm.borderWidth > 0) {
+ ctx.stroke();
+ }
+ },
+
+ draw: function() {
+ var ctx = this._chart.ctx;
+ var vm = this._view;
+
+ if (vm.opacity === 0) {
+ return;
+ }
+
+ var tooltipSize = {
+ width: vm.width,
+ height: vm.height
+ };
+ var pt = {
+ x: vm.x,
+ y: vm.y
+ };
+
+ // IE11/Edge does not like very small opacities, so snap to 0
+ var opacity = Math.abs(vm.opacity < 1e-3) ? 0 : vm.opacity;
+
+ // Truthy/falsey value for empty tooltip
+ var hasTooltipContent = vm.title.length || vm.beforeBody.length || vm.body.length || vm.afterBody.length || vm.footer.length;
+
+ if (this._options.enabled && hasTooltipContent) {
+ ctx.save();
+ ctx.globalAlpha = opacity;
+
+ // Draw Background
+ this.drawBackground(pt, vm, ctx, tooltipSize);
+
+ // Draw Title, Body, and Footer
+ pt.y += vm.yPadding;
+
+ helpers$1.rtl.overrideTextDirection(ctx, vm.textDirection);
+
+ // Titles
+ this.drawTitle(pt, vm, ctx);
+
+ // Body
+ this.drawBody(pt, vm, ctx);
+
+ // Footer
+ this.drawFooter(pt, vm, ctx);
+
+ helpers$1.rtl.restoreTextDirection(ctx, vm.textDirection);
+
+ ctx.restore();
+ }
+ },
+
+ /**
+ * Handle an event
+ * @private
+ * @param {IEvent} event - The event to handle
+ * @returns {boolean} true if the tooltip changed
+ */
+ handleEvent: function(e) {
+ var me = this;
+ var options = me._options;
+ var changed = false;
+
+ me._lastActive = me._lastActive || [];
+
+ // Find Active Elements for tooltips
+ if (e.type === 'mouseout') {
+ me._active = [];
+ } else {
+ me._active = me._chart.getElementsAtEventForMode(e, options.mode, options);
+ if (options.reverse) {
+ me._active.reverse();
+ }
+ }
+
+ // Remember Last Actives
+ changed = !helpers$1.arrayEquals(me._active, me._lastActive);
+
+ // Only handle target event on tooltip change
+ if (changed) {
+ me._lastActive = me._active;
+
+ if (options.enabled || options.custom) {
+ me._eventPosition = {
+ x: e.x,
+ y: e.y
+ };
+
+ me.update(true);
+ me.pivot();
+ }
+ }
+
+ return changed;
+ }
+});
+
+/**
+ * @namespace Chart.Tooltip.positioners
+ */
+var positioners_1 = positioners;
+
+var core_tooltip = exports$4; +core_tooltip.positioners = positioners_1; + +var valueOrDefault$9 = helpers$1.valueOrDefault;
+
+core_defaults._set('global', {
+ elements: {},
+ events: [
+ 'mousemove',
+ 'mouseout',
+ 'click',
+ 'touchstart',
+ 'touchmove'
+ ],
+ hover: {
+ onHover: null,
+ mode: 'nearest',
+ intersect: true,
+ animationDuration: 400
+ },
+ onClick: null,
+ maintainAspectRatio: true,
+ responsive: true,
+ responsiveAnimationDuration: 0
+});
+
+/**
+ * Recursively merge the given config objects representing the `scales` option
+ * by incorporating scale defaults in `xAxes` and `yAxes` array items, then
+ * returns a deep copy of the result, thus doesn't alter inputs.
+ */
+function mergeScaleConfig(/* config objects ... */) {
+ return helpers$1.merge(Object.create(null), [].slice.call(arguments), {
+ merger: function(key, target, source, options) {
+ if (key === 'xAxes' || key === 'yAxes') {
+ var slen = source[key].length;
+ var i, type, scale;
+
+ if (!target[key]) {
+ target[key] = [];
+ }
+
+ for (i = 0; i < slen; ++i) {
+ scale = source[key][i];
+ type = valueOrDefault$9(scale.type, key === 'xAxes' ? 'category' : 'linear');
+
+ if (i >= target[key].length) {
+ target[key].push({});
+ }
+
+ if (!target[key][i].type || (scale.type && scale.type !== target[key][i].type)) {
+ // new/untyped scale or type changed: let's apply the new defaults
+ // then merge source scale to correctly overwrite the defaults.
+ helpers$1.merge(target[key][i], [core_scaleService.getScaleDefaults(type), scale]);
+ } else {
+ // scales type are the same
+ helpers$1.merge(target[key][i], scale);
+ }
+ }
+ } else {
+ helpers$1._merger(key, target, source, options);
+ }
+ }
+ });
+}
+
+/**
+ * Recursively merge the given config objects as the root options by handling
+ * default scale options for the `scales` and `scale` properties, then returns
+ * a deep copy of the result, thus doesn't alter inputs.
+ */
+function mergeConfig(/* config objects ... */) {
+ return helpers$1.merge(Object.create(null), [].slice.call(arguments), {
+ merger: function(key, target, source, options) {
+ var tval = target[key] || Object.create(null);
+ var sval = source[key];
+
+ if (key === 'scales') {
+ // scale config merging is complex. Add our own function here for that
+ target[key] = mergeScaleConfig(tval, sval);
+ } else if (key === 'scale') {
+ // used in polar area & radar charts since there is only one scale
+ target[key] = helpers$1.merge(tval, [core_scaleService.getScaleDefaults(sval.type), sval]);
+ } else {
+ helpers$1._merger(key, target, source, options);
+ }
+ }
+ });
+}
+
+function initConfig(config) {
+ config = config || Object.create(null);
+
+ // Do NOT use mergeConfig for the data object because this method merges arrays
+ // and so would change references to labels and datasets, preventing data updates.
+ var data = config.data = config.data || {};
+ data.datasets = data.datasets || [];
+ data.labels = data.labels || [];
+
+ config.options = mergeConfig(
+ core_defaults.global,
+ core_defaults[config.type],
+ config.options || {});
+
+ return config;
+}
+
+function updateConfig(chart) {
+ var newOptions = chart.options;
+
+ helpers$1.each(chart.scales, function(scale) {
+ core_layouts.removeBox(chart, scale);
+ });
+
+ newOptions = mergeConfig(
+ core_defaults.global,
+ core_defaults[chart.config.type],
+ newOptions);
+
+ chart.options = chart.config.options = newOptions;
+ chart.ensureScalesHaveIDs();
+ chart.buildOrUpdateScales();
+
+ // Tooltip
+ chart.tooltip._options = newOptions.tooltips;
+ chart.tooltip.initialize();
+}
+
+function nextAvailableScaleId(axesOpts, prefix, index) {
+ var id;
+ var hasId = function(obj) {
+ return obj.id === id;
+ };
+
+ do {
+ id = prefix + index++;
+ } while (helpers$1.findIndex(axesOpts, hasId) >= 0);
+
+ return id;
+}
+
+function positionIsHorizontal(position) {
+ return position === 'top' || position === 'bottom';
+}
+
+function compare2Level(l1, l2) {
+ return function(a, b) {
+ return a[l1] === b[l1]
+ ? a[l2] - b[l2]
+ : a[l1] - b[l1];
+ };
+}
+
+var Chart = function(item, config) {
+ this.construct(item, config);
+ return this;
+};
+
+helpers$1.extend(Chart.prototype, /** @lends Chart */ {
+ /**
+ * @private
+ */
+ construct: function(item, config) {
+ var me = this;
+
+ config = initConfig(config);
+
+ var context = platform.acquireContext(item, config);
+ var canvas = context && context.canvas;
+ var height = canvas && canvas.height;
+ var width = canvas && canvas.width;
+
+ me.id = helpers$1.uid();
+ me.ctx = context;
+ me.canvas = canvas;
+ me.config = config;
+ me.width = width;
+ me.height = height;
+ me.aspectRatio = height ? width / height : null;
+ me.options = config.options;
+ me._bufferedRender = false;
+ me._layers = [];
+
+ /**
+ * Provided for backward compatibility, Chart and Chart.Controller have been merged,
+ * the "instance" still need to be defined since it might be called from plugins.
+ * @prop Chart#chart
+ * @deprecated since version 2.6.0
+ * @todo remove at version 3
+ * @private
+ */
+ me.chart = me;
+ me.controller = me; // chart.chart.controller #inception
+
+ // Add the chart instance to the global namespace
+ Chart.instances[me.id] = me;
+
+ // Define alias to the config data: `chart.data === chart.config.data`
+ Object.defineProperty(me, 'data', {
+ get: function() {
+ return me.config.data;
+ },
+ set: function(value) {
+ me.config.data = value;
+ }
+ });
+
+ if (!context || !canvas) {
+ // The given item is not a compatible context2d element, let's return before finalizing
+ // the chart initialization but after setting basic chart / controller properties that
+ // can help to figure out that the chart is not valid (e.g chart.canvas !== null);
+ // https://github.com/chartjs/Chart.js/issues/2807
+ console.error("Failed to create chart: can't acquire context from the given item");
+ return;
+ }
+
+ me.initialize();
+ me.update();
+ },
+
+ /**
+ * @private
+ */
+ initialize: function() {
+ var me = this;
+
+ // Before init plugin notification
+ core_plugins.notify(me, 'beforeInit');
+
+ helpers$1.retinaScale(me, me.options.devicePixelRatio);
+
+ me.bindEvents();
+
+ if (me.options.responsive) {
+ // Initial resize before chart draws (must be silent to preserve initial animations).
+ me.resize(true);
+ }
+
+ me.initToolTip();
+
+ // After init plugin notification
+ core_plugins.notify(me, 'afterInit');
+
+ return me;
+ },
+
+ clear: function() {
+ helpers$1.canvas.clear(this);
+ return this;
+ },
+
+ stop: function() {
+ // Stops any current animation loop occurring
+ core_animations.cancelAnimation(this);
+ return this;
+ },
+
+ resize: function(silent) {
+ var me = this;
+ var options = me.options;
+ var canvas = me.canvas;
+ var aspectRatio = (options.maintainAspectRatio && me.aspectRatio) || null;
+
+ // the canvas render width and height will be casted to integers so make sure that
+ // the canvas display style uses the same integer values to avoid blurring effect.
+
+ // Set to 0 instead of canvas.size because the size defaults to 300x150 if the element is collapsed
+ var newWidth = Math.max(0, Math.floor(helpers$1.getMaximumWidth(canvas)));
+ var newHeight = Math.max(0, Math.floor(aspectRatio ? newWidth / aspectRatio : helpers$1.getMaximumHeight(canvas)));
+
+ if (me.width === newWidth && me.height === newHeight) {
+ return;
+ }
+
+ canvas.width = me.width = newWidth;
+ canvas.height = me.height = newHeight;
+ canvas.style.width = newWidth + 'px';
+ canvas.style.height = newHeight + 'px';
+
+ helpers$1.retinaScale(me, options.devicePixelRatio);
+
+ if (!silent) {
+ // Notify any plugins about the resize
+ var newSize = {width: newWidth, height: newHeight};
+ core_plugins.notify(me, 'resize', [newSize]);
+
+ // Notify of resize
+ if (options.onResize) {
+ options.onResize(me, newSize);
+ }
+
+ me.stop();
+ me.update({
+ duration: options.responsiveAnimationDuration
+ });
+ }
+ },
+
+ ensureScalesHaveIDs: function() {
+ var options = this.options;
+ var scalesOptions = options.scales || {};
+ var scaleOptions = options.scale;
+
+ helpers$1.each(scalesOptions.xAxes, function(xAxisOptions, index) {
+ if (!xAxisOptions.id) {
+ xAxisOptions.id = nextAvailableScaleId(scalesOptions.xAxes, 'x-axis-', index);
+ }
+ });
+
+ helpers$1.each(scalesOptions.yAxes, function(yAxisOptions, index) {
+ if (!yAxisOptions.id) {
+ yAxisOptions.id = nextAvailableScaleId(scalesOptions.yAxes, 'y-axis-', index);
+ }
+ });
+
+ if (scaleOptions) {
+ scaleOptions.id = scaleOptions.id || 'scale';
+ }
+ },
+
+ /**
+ * Builds a map of scale ID to scale object for future lookup.
+ */
+ buildOrUpdateScales: function() {
+ var me = this;
+ var options = me.options;
+ var scales = me.scales || {};
+ var items = [];
+ var updated = Object.keys(scales).reduce(function(obj, id) {
+ obj[id] = false;
+ return obj;
+ }, {});
+
+ if (options.scales) {
+ items = items.concat(
+ (options.scales.xAxes || []).map(function(xAxisOptions) {
+ return {options: xAxisOptions, dtype: 'category', dposition: 'bottom'};
+ }),
+ (options.scales.yAxes || []).map(function(yAxisOptions) {
+ return {options: yAxisOptions, dtype: 'linear', dposition: 'left'};
+ })
+ );
+ }
+
+ if (options.scale) {
+ items.push({
+ options: options.scale,
+ dtype: 'radialLinear',
+ isDefault: true,
+ dposition: 'chartArea'
+ });
+ }
+
+ helpers$1.each(items, function(item) {
+ var scaleOptions = item.options;
+ var id = scaleOptions.id;
+ var scaleType = valueOrDefault$9(scaleOptions.type, item.dtype);
+
+ if (positionIsHorizontal(scaleOptions.position) !== positionIsHorizontal(item.dposition)) {
+ scaleOptions.position = item.dposition;
+ }
+
+ updated[id] = true;
+ var scale = null;
+ if (id in scales && scales[id].type === scaleType) {
+ scale = scales[id];
+ scale.options = scaleOptions;
+ scale.ctx = me.ctx;
+ scale.chart = me;
+ } else {
+ var scaleClass = core_scaleService.getScaleConstructor(scaleType);
+ if (!scaleClass) {
+ return;
+ }
+ scale = new scaleClass({
+ id: id,
+ type: scaleType,
+ options: scaleOptions,
+ ctx: me.ctx,
+ chart: me
+ });
+ scales[scale.id] = scale;
+ }
+
+ scale.mergeTicksOptions();
+
+ // TODO(SB): I think we should be able to remove this custom case (options.scale)
+ // and consider it as a regular scale part of the "scales"" map only! This would
+ // make the logic easier and remove some useless? custom code.
+ if (item.isDefault) {
+ me.scale = scale;
+ }
+ });
+ // clear up discarded scales
+ helpers$1.each(updated, function(hasUpdated, id) {
+ if (!hasUpdated) {
+ delete scales[id];
+ }
+ });
+
+ me.scales = scales;
+
+ core_scaleService.addScalesToLayout(this);
+ },
+
+ buildOrUpdateControllers: function() {
+ var me = this;
+ var newControllers = [];
+ var datasets = me.data.datasets;
+ var i, ilen;
+
+ for (i = 0, ilen = datasets.length; i < ilen; i++) {
+ var dataset = datasets[i];
+ var meta = me.getDatasetMeta(i);
+ var type = dataset.type || me.config.type;
+
+ if (meta.type && meta.type !== type) {
+ me.destroyDatasetMeta(i);
+ meta = me.getDatasetMeta(i);
+ }
+ meta.type = type;
+ meta.order = dataset.order || 0;
+ meta.index = i;
+
+ if (meta.controller) {
+ meta.controller.updateIndex(i);
+ meta.controller.linkScales();
+ } else {
+ var ControllerClass = controllers[meta.type];
+ if (ControllerClass === undefined) {
+ throw new Error('"' + meta.type + '" is not a chart type.');
+ }
+
+ meta.controller = new ControllerClass(me, i);
+ newControllers.push(meta.controller);
+ }
+ }
+
+ return newControllers;
+ },
+
+ /**
+ * Reset the elements of all datasets
+ * @private
+ */
+ resetElements: function() {
+ var me = this;
+ helpers$1.each(me.data.datasets, function(dataset, datasetIndex) {
+ me.getDatasetMeta(datasetIndex).controller.reset();
+ }, me);
+ },
+
+ /**
+ * Resets the chart back to it's state before the initial animation
+ */
+ reset: function() {
+ this.resetElements();
+ this.tooltip.initialize();
+ },
+
+ update: function(config) {
+ var me = this;
+ var i, ilen;
+
+ if (!config || typeof config !== 'object') {
+ // backwards compatibility
+ config = {
+ duration: config,
+ lazy: arguments[1]
+ };
+ }
+
+ updateConfig(me);
+
+ // plugins options references might have change, let's invalidate the cache
+ // https://github.com/chartjs/Chart.js/issues/5111#issuecomment-355934167
+ core_plugins._invalidate(me);
+
+ if (core_plugins.notify(me, 'beforeUpdate') === false) {
+ return;
+ }
+
+ // In case the entire data object changed
+ me.tooltip._data = me.data;
+
+ // Make sure dataset controllers are updated and new controllers are reset
+ var newControllers = me.buildOrUpdateControllers();
+
+ // Make sure all dataset controllers have correct meta data counts
+ for (i = 0, ilen = me.data.datasets.length; i < ilen; i++) {
+ me.getDatasetMeta(i).controller.buildOrUpdateElements();
+ }
+
+ me.updateLayout();
+
+ // Can only reset the new controllers after the scales have been updated
+ if (me.options.animation && me.options.animation.duration) {
+ helpers$1.each(newControllers, function(controller) {
+ controller.reset();
+ });
+ }
+
+ me.updateDatasets();
+
+ // Need to reset tooltip in case it is displayed with elements that are removed
+ // after update.
+ me.tooltip.initialize();
+
+ // Last active contains items that were previously in the tooltip.
+ // When we reset the tooltip, we need to clear it
+ me.lastActive = [];
+
+ // Do this before render so that any plugins that need final scale updates can use it
+ core_plugins.notify(me, 'afterUpdate');
+
+ me._layers.sort(compare2Level('z', '_idx'));
+
+ if (me._bufferedRender) {
+ me._bufferedRequest = {
+ duration: config.duration,
+ easing: config.easing,
+ lazy: config.lazy
+ };
+ } else {
+ me.render(config);
+ }
+ },
+
+ /**
+ * Updates the chart layout unless a plugin returns `false` to the `beforeLayout`
+ * hook, in which case, plugins will not be called on `afterLayout`.
+ * @private
+ */
+ updateLayout: function() {
+ var me = this;
+
+ if (core_plugins.notify(me, 'beforeLayout') === false) {
+ return;
+ }
+
+ core_layouts.update(this, this.width, this.height);
+
+ me._layers = [];
+ helpers$1.each(me.boxes, function(box) {
+ // _configure is called twice, once in core.scale.update and once here.
+ // Here the boxes are fully updated and at their final positions.
+ if (box._configure) {
+ box._configure();
+ }
+ me._layers.push.apply(me._layers, box._layers());
+ }, me);
+
+ me._layers.forEach(function(item, index) {
+ item._idx = index;
+ });
+
+ /**
+ * Provided for backward compatibility, use `afterLayout` instead.
+ * @method IPlugin#afterScaleUpdate
+ * @deprecated since version 2.5.0
+ * @todo remove at version 3
+ * @private
+ */
+ core_plugins.notify(me, 'afterScaleUpdate');
+ core_plugins.notify(me, 'afterLayout');
+ },
+
+ /**
+ * Updates all datasets unless a plugin returns `false` to the `beforeDatasetsUpdate`
+ * hook, in which case, plugins will not be called on `afterDatasetsUpdate`.
+ * @private
+ */
+ updateDatasets: function() {
+ var me = this;
+
+ if (core_plugins.notify(me, 'beforeDatasetsUpdate') === false) {
+ return;
+ }
+
+ for (var i = 0, ilen = me.data.datasets.length; i < ilen; ++i) {
+ me.updateDataset(i);
+ }
+
+ core_plugins.notify(me, 'afterDatasetsUpdate');
+ },
+
+ /**
+ * Updates dataset at index unless a plugin returns `false` to the `beforeDatasetUpdate`
+ * hook, in which case, plugins will not be called on `afterDatasetUpdate`.
+ * @private
+ */
+ updateDataset: function(index) {
+ var me = this;
+ var meta = me.getDatasetMeta(index);
+ var args = {
+ meta: meta,
+ index: index
+ };
+
+ if (core_plugins.notify(me, 'beforeDatasetUpdate', [args]) === false) {
+ return;
+ }
+
+ meta.controller._update();
+
+ core_plugins.notify(me, 'afterDatasetUpdate', [args]);
+ },
+
+ render: function(config) {
+ var me = this;
+
+ if (!config || typeof config !== 'object') {
+ // backwards compatibility
+ config = {
+ duration: config,
+ lazy: arguments[1]
+ };
+ }
+
+ var animationOptions = me.options.animation;
+ var duration = valueOrDefault$9(config.duration, animationOptions && animationOptions.duration);
+ var lazy = config.lazy;
+
+ if (core_plugins.notify(me, 'beforeRender') === false) {
+ return;
+ }
+
+ var onComplete = function(animation) {
+ core_plugins.notify(me, 'afterRender');
+ helpers$1.callback(animationOptions && animationOptions.onComplete, [animation], me);
+ };
+
+ if (animationOptions && duration) {
+ var animation = new core_animation({
+ numSteps: duration / 16.66, // 60 fps
+ easing: config.easing || animationOptions.easing,
+
+ render: function(chart, animationObject) {
+ var easingFunction = helpers$1.easing.effects[animationObject.easing];
+ var currentStep = animationObject.currentStep;
+ var stepDecimal = currentStep / animationObject.numSteps;
+
+ chart.draw(easingFunction(stepDecimal), stepDecimal, currentStep);
+ },
+
+ onAnimationProgress: animationOptions.onProgress,
+ onAnimationComplete: onComplete
+ });
+
+ core_animations.addAnimation(me, animation, duration, lazy);
+ } else {
+ me.draw();
+
+ // See https://github.com/chartjs/Chart.js/issues/3781
+ onComplete(new core_animation({numSteps: 0, chart: me}));
+ }
+
+ return me;
+ },
+
+ draw: function(easingValue) {
+ var me = this;
+ var i, layers;
+
+ me.clear();
+
+ if (helpers$1.isNullOrUndef(easingValue)) {
+ easingValue = 1;
+ }
+
+ me.transition(easingValue);
+
+ if (me.width <= 0 || me.height <= 0) {
+ return;
+ }
+
+ if (core_plugins.notify(me, 'beforeDraw', [easingValue]) === false) {
+ return;
+ }
+
+ // Because of plugin hooks (before/afterDatasetsDraw), datasets can't
+ // currently be part of layers. Instead, we draw
+ // layers <= 0 before(default, backward compat), and the rest after
+ layers = me._layers;
+ for (i = 0; i < layers.length && layers[i].z <= 0; ++i) {
+ layers[i].draw(me.chartArea);
+ }
+
+ me.drawDatasets(easingValue);
+
+ // Rest of layers
+ for (; i < layers.length; ++i) {
+ layers[i].draw(me.chartArea);
+ }
+
+ me._drawTooltip(easingValue);
+
+ core_plugins.notify(me, 'afterDraw', [easingValue]);
+ },
+
+ /**
+ * @private
+ */
+ transition: function(easingValue) {
+ var me = this;
+
+ for (var i = 0, ilen = (me.data.datasets || []).length; i < ilen; ++i) {
+ if (me.isDatasetVisible(i)) {
+ me.getDatasetMeta(i).controller.transition(easingValue);
+ }
+ }
+
+ me.tooltip.transition(easingValue);
+ },
+
+ /**
+ * @private
+ */
+ _getSortedDatasetMetas: function(filterVisible) {
+ var me = this;
+ var datasets = me.data.datasets || [];
+ var result = [];
+ var i, ilen;
+
+ for (i = 0, ilen = datasets.length; i < ilen; ++i) {
+ if (!filterVisible || me.isDatasetVisible(i)) {
+ result.push(me.getDatasetMeta(i));
+ }
+ }
+
+ result.sort(compare2Level('order', 'index'));
+
+ return result;
+ },
+
+ /**
+ * @private
+ */
+ _getSortedVisibleDatasetMetas: function() {
+ return this._getSortedDatasetMetas(true);
+ },
+
+ /**
+ * Draws all datasets unless a plugin returns `false` to the `beforeDatasetsDraw`
+ * hook, in which case, plugins will not be called on `afterDatasetsDraw`.
+ * @private
+ */
+ drawDatasets: function(easingValue) {
+ var me = this;
+ var metasets, i;
+
+ if (core_plugins.notify(me, 'beforeDatasetsDraw', [easingValue]) === false) {
+ return;
+ }
+
+ metasets = me._getSortedVisibleDatasetMetas();
+ for (i = metasets.length - 1; i >= 0; --i) {
+ me.drawDataset(metasets[i], easingValue);
+ }
+
+ core_plugins.notify(me, 'afterDatasetsDraw', [easingValue]);
+ },
+
+ /**
+ * Draws dataset at index unless a plugin returns `false` to the `beforeDatasetDraw`
+ * hook, in which case, plugins will not be called on `afterDatasetDraw`.
+ * @private
+ */
+ drawDataset: function(meta, easingValue) {
+ var me = this;
+ var args = {
+ meta: meta,
+ index: meta.index,
+ easingValue: easingValue
+ };
+
+ if (core_plugins.notify(me, 'beforeDatasetDraw', [args]) === false) {
+ return;
+ }
+
+ meta.controller.draw(easingValue);
+
+ core_plugins.notify(me, 'afterDatasetDraw', [args]);
+ },
+
+ /**
+ * Draws tooltip unless a plugin returns `false` to the `beforeTooltipDraw`
+ * hook, in which case, plugins will not be called on `afterTooltipDraw`.
+ * @private
+ */
+ _drawTooltip: function(easingValue) {
+ var me = this;
+ var tooltip = me.tooltip;
+ var args = {
+ tooltip: tooltip,
+ easingValue: easingValue
+ };
+
+ if (core_plugins.notify(me, 'beforeTooltipDraw', [args]) === false) {
+ return;
+ }
+
+ tooltip.draw();
+
+ core_plugins.notify(me, 'afterTooltipDraw', [args]);
+ },
+
+ /**
+ * Get the single element that was clicked on
+ * @return An object containing the dataset index and element index of the matching element. Also contains the rectangle that was draw
+ */
+ getElementAtEvent: function(e) {
+ return core_interaction.modes.single(this, e);
+ },
+
+ getElementsAtEvent: function(e) {
+ return core_interaction.modes.label(this, e, {intersect: true});
+ },
+
+ getElementsAtXAxis: function(e) {
+ return core_interaction.modes['x-axis'](this, e, {intersect: true});
+ },
+
+ getElementsAtEventForMode: function(e, mode, options) {
+ var method = core_interaction.modes[mode];
+ if (typeof method === 'function') {
+ return method(this, e, options);
+ }
+
+ return [];
+ },
+
+ getDatasetAtEvent: function(e) {
+ return core_interaction.modes.dataset(this, e, {intersect: true});
+ },
+
+ getDatasetMeta: function(datasetIndex) {
+ var me = this;
+ var dataset = me.data.datasets[datasetIndex];
+ if (!dataset._meta) {
+ dataset._meta = {};
+ }
+
+ var meta = dataset._meta[me.id];
+ if (!meta) {
+ meta = dataset._meta[me.id] = {
+ type: null,
+ data: [],
+ dataset: null,
+ controller: null,
+ hidden: null, // See isDatasetVisible() comment
+ xAxisID: null,
+ yAxisID: null,
+ order: dataset.order || 0,
+ index: datasetIndex
+ };
+ }
+
+ return meta;
+ },
+
+ getVisibleDatasetCount: function() {
+ var count = 0;
+ for (var i = 0, ilen = this.data.datasets.length; i < ilen; ++i) {
+ if (this.isDatasetVisible(i)) {
+ count++;
+ }
+ }
+ return count;
+ },
+
+ isDatasetVisible: function(datasetIndex) {
+ var meta = this.getDatasetMeta(datasetIndex);
+
+ // meta.hidden is a per chart dataset hidden flag override with 3 states: if true or false,
+ // the dataset.hidden value is ignored, else if null, the dataset hidden state is returned.
+ return typeof meta.hidden === 'boolean' ? !meta.hidden : !this.data.datasets[datasetIndex].hidden;
+ },
+
+ generateLegend: function() {
+ return this.options.legendCallback(this);
+ },
+
+ /**
+ * @private
+ */
+ destroyDatasetMeta: function(datasetIndex) {
+ var id = this.id;
+ var dataset = this.data.datasets[datasetIndex];
+ var meta = dataset._meta && dataset._meta[id];
+
+ if (meta) {
+ meta.controller.destroy();
+ delete dataset._meta[id];
+ }
+ },
+
+ destroy: function() {
+ var me = this;
+ var canvas = me.canvas;
+ var i, ilen;
+
+ me.stop();
+
+ // dataset controllers need to cleanup associated data
+ for (i = 0, ilen = me.data.datasets.length; i < ilen; ++i) {
+ me.destroyDatasetMeta(i);
+ }
+
+ if (canvas) {
+ me.unbindEvents();
+ helpers$1.canvas.clear(me);
+ platform.releaseContext(me.ctx);
+ me.canvas = null;
+ me.ctx = null;
+ }
+
+ core_plugins.notify(me, 'destroy');
+
+ delete Chart.instances[me.id];
+ },
+
+ toBase64Image: function() {
+ return this.canvas.toDataURL.apply(this.canvas, arguments);
+ },
+
+ initToolTip: function() {
+ var me = this;
+ me.tooltip = new core_tooltip({
+ _chart: me,
+ _chartInstance: me, // deprecated, backward compatibility
+ _data: me.data,
+ _options: me.options.tooltips
+ }, me);
+ },
+
+ /**
+ * @private
+ */
+ bindEvents: function() {
+ var me = this;
+ var listeners = me._listeners = {};
+ var listener = function() {
+ me.eventHandler.apply(me, arguments);
+ };
+
+ helpers$1.each(me.options.events, function(type) {
+ platform.addEventListener(me, type, listener);
+ listeners[type] = listener;
+ });
+
+ // Elements used to detect size change should not be injected for non responsive charts.
+ // See https://github.com/chartjs/Chart.js/issues/2210
+ if (me.options.responsive) {
+ listener = function() {
+ me.resize();
+ };
+
+ platform.addEventListener(me, 'resize', listener);
+ listeners.resize = listener;
+ }
+ },
+
+ /**
+ * @private
+ */
+ unbindEvents: function() {
+ var me = this;
+ var listeners = me._listeners;
+ if (!listeners) {
+ return;
+ }
+
+ delete me._listeners;
+ helpers$1.each(listeners, function(listener, type) {
+ platform.removeEventListener(me, type, listener);
+ });
+ },
+
+ updateHoverStyle: function(elements, mode, enabled) {
+ var prefix = enabled ? 'set' : 'remove';
+ var element, i, ilen;
+
+ for (i = 0, ilen = elements.length; i < ilen; ++i) {
+ element = elements[i];
+ if (element) {
+ this.getDatasetMeta(element._datasetIndex).controller[prefix + 'HoverStyle'](element);
+ }
+ }
+
+ if (mode === 'dataset') {
+ this.getDatasetMeta(elements[0]._datasetIndex).controller['_' + prefix + 'DatasetHoverStyle']();
+ }
+ },
+
+ /**
+ * @private
+ */
+ eventHandler: function(e) {
+ var me = this;
+ var tooltip = me.tooltip;
+
+ if (core_plugins.notify(me, 'beforeEvent', [e]) === false) {
+ return;
+ }
+
+ // Buffer any update calls so that renders do not occur
+ me._bufferedRender = true;
+ me._bufferedRequest = null;
+
+ var changed = me.handleEvent(e);
+ // for smooth tooltip animations issue #4989
+ // the tooltip should be the source of change
+ // Animation check workaround:
+ // tooltip._start will be null when tooltip isn't animating
+ if (tooltip) {
+ changed = tooltip._start
+ ? tooltip.handleEvent(e)
+ : changed | tooltip.handleEvent(e);
+ }
+
+ core_plugins.notify(me, 'afterEvent', [e]);
+
+ var bufferedRequest = me._bufferedRequest;
+ if (bufferedRequest) {
+ // If we have an update that was triggered, we need to do a normal render
+ me.render(bufferedRequest);
+ } else if (changed && !me.animating) {
+ // If entering, leaving, or changing elements, animate the change via pivot
+ me.stop();
+
+ // We only need to render at this point. Updating will cause scales to be
+ // recomputed generating flicker & using more memory than necessary.
+ me.render({
+ duration: me.options.hover.animationDuration,
+ lazy: true
+ });
+ }
+
+ me._bufferedRender = false;
+ me._bufferedRequest = null;
+
+ return me;
+ },
+
+ /**
+ * Handle an event
+ * @private
+ * @param {IEvent} event the event to handle
+ * @return {boolean} true if the chart needs to re-render
+ */
+ handleEvent: function(e) {
+ var me = this;
+ var options = me.options || {};
+ var hoverOptions = options.hover;
+ var changed = false;
+
+ me.lastActive = me.lastActive || [];
+
+ // Find Active Elements for hover and tooltips
+ if (e.type === 'mouseout') {
+ me.active = [];
+ } else {
+ me.active = me.getElementsAtEventForMode(e, hoverOptions.mode, hoverOptions);
+ }
+
+ // Invoke onHover hook
+ // Need to call with native event here to not break backwards compatibility
+ helpers$1.callback(options.onHover || options.hover.onHover, [e.native, me.active], me);
+
+ if (e.type === 'mouseup' || e.type === 'click') {
+ if (options.onClick) {
+ // Use e.native here for backwards compatibility
+ options.onClick.call(me, e.native, me.active);
+ }
+ }
+
+ // Remove styling for last active (even if it may still be active)
+ if (me.lastActive.length) {
+ me.updateHoverStyle(me.lastActive, hoverOptions.mode, false);
+ }
+
+ // Built in hover styling
+ if (me.active.length && hoverOptions.mode) {
+ me.updateHoverStyle(me.active, hoverOptions.mode, true);
+ }
+
+ changed = !helpers$1.arrayEquals(me.active, me.lastActive);
+
+ // Remember Last Actives
+ me.lastActive = me.active;
+
+ return changed;
+ }
+});
+
+/**
+ * NOTE(SB) We actually don't use this container anymore but we need to keep it
+ * for backward compatibility. Though, it can still be useful for plugins that
+ * would need to work on multiple charts?!
+ */
+Chart.instances = {};
+
+var core_controller = Chart;
+
+// DEPRECATIONS
+
+/**
+ * Provided for backward compatibility, use Chart instead.
+ * @class Chart.Controller
+ * @deprecated since version 2.6
+ * @todo remove at version 3
+ * @private
+ */
+Chart.Controller = Chart;
+
+/**
+ * Provided for backward compatibility, not available anymore.
+ * @namespace Chart
+ * @deprecated since version 2.8
+ * @todo remove at version 3
+ * @private
+ */
+Chart.types = {};
+
+/**
+ * Provided for backward compatibility, not available anymore.
+ * @namespace Chart.helpers.configMerge
+ * @deprecated since version 2.8.0
+ * @todo remove at version 3
+ * @private
+ */
+helpers$1.configMerge = mergeConfig;
+
+/**
+ * Provided for backward compatibility, not available anymore.
+ * @namespace Chart.helpers.scaleMerge
+ * @deprecated since version 2.8.0
+ * @todo remove at version 3
+ * @private
+ */
+helpers$1.scaleMerge = mergeScaleConfig; + +var core_helpers = function() {
+
+ // -- Basic js utility methods
+
+ helpers$1.where = function(collection, filterCallback) {
+ if (helpers$1.isArray(collection) && Array.prototype.filter) {
+ return collection.filter(filterCallback);
+ }
+ var filtered = [];
+
+ helpers$1.each(collection, function(item) {
+ if (filterCallback(item)) {
+ filtered.push(item);
+ }
+ });
+
+ return filtered;
+ };
+ helpers$1.findIndex = Array.prototype.findIndex ?
+ function(array, callback, scope) {
+ return array.findIndex(callback, scope);
+ } :
+ function(array, callback, scope) {
+ scope = scope === undefined ? array : scope;
+ for (var i = 0, ilen = array.length; i < ilen; ++i) {
+ if (callback.call(scope, array[i], i, array)) {
+ return i;
+ }
+ }
+ return -1;
+ };
+ helpers$1.findNextWhere = function(arrayToSearch, filterCallback, startIndex) {
+ // Default to start of the array
+ if (helpers$1.isNullOrUndef(startIndex)) {
+ startIndex = -1;
+ }
+ for (var i = startIndex + 1; i < arrayToSearch.length; i++) {
+ var currentItem = arrayToSearch[i];
+ if (filterCallback(currentItem)) {
+ return currentItem;
+ }
+ }
+ };
+ helpers$1.findPreviousWhere = function(arrayToSearch, filterCallback, startIndex) {
+ // Default to end of the array
+ if (helpers$1.isNullOrUndef(startIndex)) {
+ startIndex = arrayToSearch.length;
+ }
+ for (var i = startIndex - 1; i >= 0; i--) {
+ var currentItem = arrayToSearch[i];
+ if (filterCallback(currentItem)) {
+ return currentItem;
+ }
+ }
+ };
+
+ // -- Math methods
+ helpers$1.isNumber = function(n) {
+ return !isNaN(parseFloat(n)) && isFinite(n);
+ };
+ helpers$1.almostEquals = function(x, y, epsilon) {
+ return Math.abs(x - y) < epsilon;
+ };
+ helpers$1.almostWhole = function(x, epsilon) {
+ var rounded = Math.round(x);
+ return ((rounded - epsilon) <= x) && ((rounded + epsilon) >= x);
+ };
+ helpers$1.max = function(array) {
+ return array.reduce(function(max, value) {
+ if (!isNaN(value)) {
+ return Math.max(max, value);
+ }
+ return max;
+ }, Number.NEGATIVE_INFINITY);
+ };
+ helpers$1.min = function(array) {
+ return array.reduce(function(min, value) {
+ if (!isNaN(value)) {
+ return Math.min(min, value);
+ }
+ return min;
+ }, Number.POSITIVE_INFINITY);
+ };
+ helpers$1.sign = Math.sign ?
+ function(x) {
+ return Math.sign(x);
+ } :
+ function(x) {
+ x = +x; // convert to a number
+ if (x === 0 || isNaN(x)) {
+ return x;
+ }
+ return x > 0 ? 1 : -1;
+ };
+ helpers$1.toRadians = function(degrees) {
+ return degrees * (Math.PI / 180);
+ };
+ helpers$1.toDegrees = function(radians) {
+ return radians * (180 / Math.PI);
+ };
+
+ /**
+ * Returns the number of decimal places
+ * i.e. the number of digits after the decimal point, of the value of this Number.
+ * @param {number} x - A number.
+ * @returns {number} The number of decimal places.
+ * @private
+ */
+ helpers$1._decimalPlaces = function(x) {
+ if (!helpers$1.isFinite(x)) {
+ return;
+ }
+ var e = 1;
+ var p = 0;
+ while (Math.round(x * e) / e !== x) {
+ e *= 10;
+ p++;
+ }
+ return p;
+ };
+
+ // Gets the angle from vertical upright to the point about a centre.
+ helpers$1.getAngleFromPoint = function(centrePoint, anglePoint) {
+ var distanceFromXCenter = anglePoint.x - centrePoint.x;
+ var distanceFromYCenter = anglePoint.y - centrePoint.y;
+ var radialDistanceFromCenter = Math.sqrt(distanceFromXCenter * distanceFromXCenter + distanceFromYCenter * distanceFromYCenter);
+
+ var angle = Math.atan2(distanceFromYCenter, distanceFromXCenter);
+
+ if (angle < (-0.5 * Math.PI)) {
+ angle += 2.0 * Math.PI; // make sure the returned angle is in the range of (-PI/2, 3PI/2]
+ }
+
+ return {
+ angle: angle,
+ distance: radialDistanceFromCenter
+ };
+ };
+ helpers$1.distanceBetweenPoints = function(pt1, pt2) {
+ return Math.sqrt(Math.pow(pt2.x - pt1.x, 2) + Math.pow(pt2.y - pt1.y, 2));
+ };
+
+ /**
+ * Provided for backward compatibility, not available anymore
+ * @function Chart.helpers.aliasPixel
+ * @deprecated since version 2.8.0
+ * @todo remove at version 3
+ */
+ helpers$1.aliasPixel = function(pixelWidth) {
+ return (pixelWidth % 2 === 0) ? 0 : 0.5;
+ };
+
+ /**
+ * Returns the aligned pixel value to avoid anti-aliasing blur
+ * @param {Chart} chart - The chart instance.
+ * @param {number} pixel - A pixel value.
+ * @param {number} width - The width of the element.
+ * @returns {number} The aligned pixel value.
+ * @private
+ */
+ helpers$1._alignPixel = function(chart, pixel, width) {
+ var devicePixelRatio = chart.currentDevicePixelRatio;
+ var halfWidth = width / 2;
+ return Math.round((pixel - halfWidth) * devicePixelRatio) / devicePixelRatio + halfWidth;
+ };
+
+ helpers$1.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;
+ var current = middlePoint;
+ var next = afterPoint.skip ? middlePoint : afterPoint;
+
+ var d01 = Math.sqrt(Math.pow(current.x - previous.x, 2) + Math.pow(current.y - previous.y, 2));
+ var d12 = Math.sqrt(Math.pow(next.x - current.x, 2) + Math.pow(next.y - current.y, 2));
+
+ var s01 = d01 / (d01 + d12);
+ var s12 = d12 / (d01 + d12);
+
+ // If all points are the same, s01 & s02 will be inf
+ s01 = isNaN(s01) ? 0 : s01;
+ s12 = isNaN(s12) ? 0 : s12;
+
+ var fa = t * s01; // scaling factor for triangle Ta
+ var fb = t * s12;
+
+ return {
+ previous: {
+ x: current.x - fa * (next.x - previous.x),
+ y: current.y - fa * (next.y - previous.y)
+ },
+ next: {
+ x: current.x + fb * (next.x - previous.x),
+ y: current.y + fb * (next.y - previous.y)
+ }
+ };
+ };
+ helpers$1.EPSILON = Number.EPSILON || 1e-14;
+ helpers$1.splineCurveMonotone = function(points) {
+ // This function calculates Bézier control points in a similar way than |splineCurve|,
+ // but preserves monotonicity of the provided data and ensures no local extremums are added
+ // between the dataset discrete points due to the interpolation.
+ // See : https://en.wikipedia.org/wiki/Monotone_cubic_interpolation
+
+ var pointsWithTangents = (points || []).map(function(point) {
+ return {
+ model: point._model,
+ deltaK: 0,
+ mK: 0
+ };
+ });
+
+ // Calculate slopes (deltaK) and initialize tangents (mK)
+ var pointsLen = pointsWithTangents.length;
+ var i, pointBefore, pointCurrent, pointAfter;
+ for (i = 0; i < pointsLen; ++i) {
+ pointCurrent = pointsWithTangents[i];
+ if (pointCurrent.model.skip) {
+ continue;
+ }
+
+ pointBefore = i > 0 ? pointsWithTangents[i - 1] : null;
+ pointAfter = i < pointsLen - 1 ? pointsWithTangents[i + 1] : null;
+ if (pointAfter && !pointAfter.model.skip) {
+ var slopeDeltaX = (pointAfter.model.x - pointCurrent.model.x);
+
+ // In the case of two points that appear at the same x pixel, slopeDeltaX is 0
+ pointCurrent.deltaK = slopeDeltaX !== 0 ? (pointAfter.model.y - pointCurrent.model.y) / slopeDeltaX : 0;
+ }
+
+ if (!pointBefore || pointBefore.model.skip) {
+ pointCurrent.mK = pointCurrent.deltaK;
+ } else if (!pointAfter || pointAfter.model.skip) {
+ pointCurrent.mK = pointBefore.deltaK;
+ } else if (this.sign(pointBefore.deltaK) !== this.sign(pointCurrent.deltaK)) {
+ pointCurrent.mK = 0;
+ } else {
+ pointCurrent.mK = (pointBefore.deltaK + pointCurrent.deltaK) / 2;
+ }
+ }
+
+ // Adjust tangents to ensure monotonic properties
+ var alphaK, betaK, tauK, squaredMagnitude;
+ for (i = 0; i < pointsLen - 1; ++i) {
+ pointCurrent = pointsWithTangents[i];
+ pointAfter = pointsWithTangents[i + 1];
+ if (pointCurrent.model.skip || pointAfter.model.skip) {
+ continue;
+ }
+
+ if (helpers$1.almostEquals(pointCurrent.deltaK, 0, this.EPSILON)) {
+ pointCurrent.mK = pointAfter.mK = 0;
+ continue;
+ }
+
+ alphaK = pointCurrent.mK / pointCurrent.deltaK;
+ betaK = pointAfter.mK / pointCurrent.deltaK;
+ squaredMagnitude = Math.pow(alphaK, 2) + Math.pow(betaK, 2);
+ if (squaredMagnitude <= 9) {
+ continue;
+ }
+
+ tauK = 3 / Math.sqrt(squaredMagnitude);
+ pointCurrent.mK = alphaK * tauK * pointCurrent.deltaK;
+ pointAfter.mK = betaK * tauK * pointCurrent.deltaK;
+ }
+
+ // Compute control points
+ var deltaX;
+ for (i = 0; i < pointsLen; ++i) {
+ pointCurrent = pointsWithTangents[i];
+ if (pointCurrent.model.skip) {
+ continue;
+ }
+
+ pointBefore = i > 0 ? pointsWithTangents[i - 1] : null;
+ pointAfter = i < pointsLen - 1 ? pointsWithTangents[i + 1] : null;
+ if (pointBefore && !pointBefore.model.skip) {
+ deltaX = (pointCurrent.model.x - pointBefore.model.x) / 3;
+ pointCurrent.model.controlPointPreviousX = pointCurrent.model.x - deltaX;
+ pointCurrent.model.controlPointPreviousY = pointCurrent.model.y - deltaX * pointCurrent.mK;
+ }
+ if (pointAfter && !pointAfter.model.skip) {
+ deltaX = (pointAfter.model.x - pointCurrent.model.x) / 3;
+ pointCurrent.model.controlPointNextX = pointCurrent.model.x + deltaX;
+ pointCurrent.model.controlPointNextY = pointCurrent.model.y + deltaX * pointCurrent.mK;
+ }
+ }
+ };
+ helpers$1.nextItem = function(collection, index, loop) {
+ if (loop) {
+ return index >= collection.length - 1 ? collection[0] : collection[index + 1];
+ }
+ return index >= collection.length - 1 ? collection[collection.length - 1] : collection[index + 1];
+ };
+ helpers$1.previousItem = function(collection, index, loop) {
+ if (loop) {
+ return index <= 0 ? collection[collection.length - 1] : collection[index - 1];
+ }
+ return index <= 0 ? collection[0] : collection[index - 1];
+ };
+ // Implementation of the nice number algorithm used in determining where axis labels will go
+ helpers$1.niceNum = function(range, round) {
+ var exponent = Math.floor(helpers$1.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);
+ };
+ // Request animation polyfill - https://www.paulirish.com/2011/requestanimationframe-for-smart-animating/
+ helpers$1.requestAnimFrame = (function() {
+ if (typeof window === 'undefined') {
+ return function(callback) {
+ callback();
+ };
+ }
+ return window.requestAnimationFrame ||
+ window.webkitRequestAnimationFrame ||
+ window.mozRequestAnimationFrame ||
+ window.oRequestAnimationFrame ||
+ window.msRequestAnimationFrame ||
+ function(callback) {
+ return window.setTimeout(callback, 1000 / 60);
+ };
+ }());
+ // -- DOM methods
+ helpers$1.getRelativePosition = function(evt, chart) {
+ var mouseX, mouseY;
+ var e = evt.originalEvent || evt;
+ var canvas = evt.target || evt.srcElement;
+ var boundingRect = canvas.getBoundingClientRect();
+
+ var touches = e.touches;
+ if (touches && touches.length > 0) {
+ mouseX = touches[0].clientX;
+ mouseY = touches[0].clientY;
+
+ } else {
+ mouseX = e.clientX;
+ mouseY = e.clientY;
+ }
+
+ // Scale mouse coordinates into canvas coordinates
+ // by following the pattern laid out by 'jerryj' in the comments of
+ // https://www.html5canvastutorials.com/advanced/html5-canvas-mouse-coordinates/
+ var paddingLeft = parseFloat(helpers$1.getStyle(canvas, 'padding-left'));
+ var paddingTop = parseFloat(helpers$1.getStyle(canvas, 'padding-top'));
+ var paddingRight = parseFloat(helpers$1.getStyle(canvas, 'padding-right'));
+ var paddingBottom = parseFloat(helpers$1.getStyle(canvas, 'padding-bottom'));
+ var width = boundingRect.right - boundingRect.left - paddingLeft - paddingRight;
+ var height = boundingRect.bottom - boundingRect.top - paddingTop - paddingBottom;
+
+ // We divide by the current device pixel ratio, because the canvas is scaled up by that amount in each direction. However
+ // the backend model is in unscaled coordinates. Since we are going to deal with our model coordinates, we go back here
+ mouseX = Math.round((mouseX - boundingRect.left - paddingLeft) / (width) * canvas.width / chart.currentDevicePixelRatio);
+ mouseY = Math.round((mouseY - boundingRect.top - paddingTop) / (height) * canvas.height / chart.currentDevicePixelRatio);
+
+ return {
+ x: mouseX,
+ y: mouseY
+ };
+
+ };
+
+ // Private helper function to convert max-width/max-height values that may be percentages into a number
+ function parseMaxStyle(styleValue, node, parentProperty) {
+ var valueInPixels;
+ if (typeof styleValue === 'string') {
+ valueInPixels = parseInt(styleValue, 10);
+
+ if (styleValue.indexOf('%') !== -1) {
+ // percentage * size in dimension
+ valueInPixels = valueInPixels / 100 * node.parentNode[parentProperty];
+ }
+ } else {
+ valueInPixels = styleValue;
+ }
+
+ return valueInPixels;
+ }
+
+ /**
+ * Returns if the given value contains an effective constraint.
+ * @private
+ */
+ function isConstrainedValue(value) {
+ return value !== undefined && value !== null && value !== 'none';
+ }
+
+ /**
+ * Returns the max width or height of the given DOM node in a cross-browser compatible fashion
+ * @param {HTMLElement} domNode - the node to check the constraint on
+ * @param {string} maxStyle - the style that defines the maximum for the direction we are using ('max-width' / 'max-height')
+ * @param {string} percentageProperty - property of parent to use when calculating width as a percentage
+ * @see {@link https://www.nathanaeljones.com/blog/2013/reading-max-width-cross-browser}
+ */
+ function getConstraintDimension(domNode, maxStyle, percentageProperty) {
+ var view = document.defaultView;
+ var parentNode = helpers$1._getParentNode(domNode);
+ var constrainedNode = view.getComputedStyle(domNode)[maxStyle];
+ var constrainedContainer = view.getComputedStyle(parentNode)[maxStyle];
+ var hasCNode = isConstrainedValue(constrainedNode);
+ var hasCContainer = isConstrainedValue(constrainedContainer);
+ var infinity = Number.POSITIVE_INFINITY;
+
+ if (hasCNode || hasCContainer) {
+ return Math.min(
+ hasCNode ? parseMaxStyle(constrainedNode, domNode, percentageProperty) : infinity,
+ hasCContainer ? parseMaxStyle(constrainedContainer, parentNode, percentageProperty) : infinity);
+ }
+
+ return 'none';
+ }
+ // returns Number or undefined if no constraint
+ helpers$1.getConstraintWidth = function(domNode) {
+ return getConstraintDimension(domNode, 'max-width', 'clientWidth');
+ };
+ // returns Number or undefined if no constraint
+ helpers$1.getConstraintHeight = function(domNode) {
+ return getConstraintDimension(domNode, 'max-height', 'clientHeight');
+ };
+ /**
+ * @private
+ */
+ helpers$1._calculatePadding = function(container, padding, parentDimension) {
+ padding = helpers$1.getStyle(container, padding);
+
+ return padding.indexOf('%') > -1 ? parentDimension * parseInt(padding, 10) / 100 : parseInt(padding, 10);
+ };
+ /**
+ * @private
+ */
+ helpers$1._getParentNode = function(domNode) {
+ var parent = domNode.parentNode;
+ if (parent && parent.toString() === '[object ShadowRoot]') {
+ parent = parent.host;
+ }
+ return parent;
+ };
+ helpers$1.getMaximumWidth = function(domNode) {
+ var container = helpers$1._getParentNode(domNode);
+ if (!container) {
+ return domNode.clientWidth;
+ }
+
+ var clientWidth = container.clientWidth;
+ var paddingLeft = helpers$1._calculatePadding(container, 'padding-left', clientWidth);
+ var paddingRight = helpers$1._calculatePadding(container, 'padding-right', clientWidth);
+
+ var w = clientWidth - paddingLeft - paddingRight;
+ var cw = helpers$1.getConstraintWidth(domNode);
+ return isNaN(cw) ? w : Math.min(w, cw);
+ };
+ helpers$1.getMaximumHeight = function(domNode) {
+ var container = helpers$1._getParentNode(domNode);
+ if (!container) {
+ return domNode.clientHeight;
+ }
+
+ var clientHeight = container.clientHeight;
+ var paddingTop = helpers$1._calculatePadding(container, 'padding-top', clientHeight);
+ var paddingBottom = helpers$1._calculatePadding(container, 'padding-bottom', clientHeight);
+
+ var h = clientHeight - paddingTop - paddingBottom;
+ var ch = helpers$1.getConstraintHeight(domNode);
+ return isNaN(ch) ? h : Math.min(h, ch);
+ };
+ helpers$1.getStyle = function(el, property) {
+ return el.currentStyle ?
+ el.currentStyle[property] :
+ document.defaultView.getComputedStyle(el, null).getPropertyValue(property);
+ };
+ helpers$1.retinaScale = function(chart, forceRatio) {
+ var pixelRatio = chart.currentDevicePixelRatio = forceRatio || (typeof window !== 'undefined' && window.devicePixelRatio) || 1;
+ if (pixelRatio === 1) {
+ return;
+ }
+
+ var canvas = chart.canvas;
+ var height = chart.height;
+ var width = chart.width;
+
+ canvas.height = height * pixelRatio;
+ canvas.width = width * pixelRatio;
+ chart.ctx.scale(pixelRatio, pixelRatio);
+
+ // If no style has been set on the canvas, the render size is used as display size,
+ // making the chart visually bigger, so let's enforce it to the "correct" values.
+ // See https://github.com/chartjs/Chart.js/issues/3575
+ if (!canvas.style.height && !canvas.style.width) {
+ canvas.style.height = height + 'px';
+ canvas.style.width = width + 'px';
+ }
+ };
+ // -- Canvas methods
+ helpers$1.fontString = function(pixelSize, fontStyle, fontFamily) {
+ return fontStyle + ' ' + pixelSize + 'px ' + fontFamily;
+ };
+ helpers$1.longestText = function(ctx, font, arrayOfThings, cache) {
+ cache = cache || {};
+ var data = cache.data = cache.data || {};
+ var gc = cache.garbageCollect = cache.garbageCollect || [];
+
+ if (cache.font !== font) {
+ data = cache.data = {};
+ gc = cache.garbageCollect = [];
+ cache.font = font;
+ }
+
+ ctx.font = font;
+ var longest = 0;
+ var ilen = arrayOfThings.length;
+ var i, j, jlen, thing, nestedThing;
+ for (i = 0; i < ilen; i++) {
+ thing = arrayOfThings[i];
+
+ // Undefined strings and arrays should not be measured
+ if (thing !== undefined && thing !== null && helpers$1.isArray(thing) !== true) {
+ longest = helpers$1.measureText(ctx, data, gc, longest, thing);
+ } else if (helpers$1.isArray(thing)) {
+ // if it is an array lets measure each element
+ // to do maybe simplify this function a bit so we can do this more recursively?
+ for (j = 0, jlen = thing.length; j < jlen; j++) {
+ nestedThing = thing[j];
+ // Undefined strings and arrays should not be measured
+ if (nestedThing !== undefined && nestedThing !== null && !helpers$1.isArray(nestedThing)) {
+ longest = helpers$1.measureText(ctx, data, gc, longest, nestedThing);
+ }
+ }
+ }
+ }
+
+ var gcLen = gc.length / 2;
+ if (gcLen > arrayOfThings.length) {
+ for (i = 0; i < gcLen; i++) {
+ delete data[gc[i]];
+ }
+ gc.splice(0, gcLen);
+ }
+ return longest;
+ };
+ helpers$1.measureText = function(ctx, data, gc, longest, string) {
+ var textWidth = data[string];
+ if (!textWidth) {
+ textWidth = data[string] = ctx.measureText(string).width;
+ gc.push(string);
+ }
+ if (textWidth > longest) {
+ longest = textWidth;
+ }
+ return longest;
+ };
+
+ /**
+ * @deprecated
+ */
+ helpers$1.numberOfLabelLines = function(arrayOfThings) {
+ var numberOfLines = 1;
+ helpers$1.each(arrayOfThings, function(thing) {
+ if (helpers$1.isArray(thing)) {
+ if (thing.length > numberOfLines) {
+ numberOfLines = thing.length;
+ }
+ }
+ });
+ return numberOfLines;
+ };
+
+ helpers$1.color = !chartjsColor ?
+ function(value) {
+ console.error('Color.js not found!');
+ return value;
+ } :
+ function(value) {
+ /* global CanvasGradient */
+ if (value instanceof CanvasGradient) {
+ value = core_defaults.global.defaultColor;
+ }
+
+ return chartjsColor(value);
+ };
+
+ helpers$1.getHoverColor = function(colorValue) {
+ /* global CanvasPattern */
+ return (colorValue instanceof CanvasPattern || colorValue instanceof CanvasGradient) ?
+ colorValue :
+ helpers$1.color(colorValue).saturate(0.5).darken(0.1).rgbString();
+ };
+}; + +function abstract() {
+ throw new Error(
+ 'This method is not implemented: either no adapter can ' +
+ 'be found or an incomplete integration was provided.'
+ );
+}
+
+/**
+ * Date adapter (current used by the time scale)
+ * @namespace Chart._adapters._date
+ * @memberof Chart._adapters
+ * @private
+ */
+
+/**
+ * Currently supported unit string values.
+ * @typedef {('millisecond'|'second'|'minute'|'hour'|'day'|'week'|'month'|'quarter'|'year')}
+ * @memberof Chart._adapters._date
+ * @name Unit
+ */
+
+/**
+ * @class
+ */
+function DateAdapter(options) {
+ this.options = options || {};
+}
+
+helpers$1.extend(DateAdapter.prototype, /** @lends DateAdapter */ {
+ /**
+ * Returns a map of time formats for the supported formatting units defined
+ * in Unit as well as 'datetime' representing a detailed date/time string.
+ * @returns {{string: string}}
+ */
+ formats: abstract,
+
+ /**
+ * Parses the given `value` and return the associated timestamp.
+ * @param {any} value - the value to parse (usually comes from the data)
+ * @param {string} [format] - the expected data format
+ * @returns {(number|null)}
+ * @function
+ */
+ parse: abstract,
+
+ /**
+ * Returns the formatted date in the specified `format` for a given `timestamp`.
+ * @param {number} timestamp - the timestamp to format
+ * @param {string} format - the date/time token
+ * @return {string}
+ * @function
+ */
+ format: abstract,
+
+ /**
+ * Adds the specified `amount` of `unit` to the given `timestamp`.
+ * @param {number} timestamp - the input timestamp
+ * @param {number} amount - the amount to add
+ * @param {Unit} unit - the unit as string
+ * @return {number}
+ * @function
+ */
+ add: abstract,
+
+ /**
+ * Returns the number of `unit` between the given timestamps.
+ * @param {number} max - the input timestamp (reference)
+ * @param {number} min - the timestamp to substract
+ * @param {Unit} unit - the unit as string
+ * @return {number}
+ * @function
+ */
+ diff: abstract,
+
+ /**
+ * Returns start of `unit` for the given `timestamp`.
+ * @param {number} timestamp - the input timestamp
+ * @param {Unit} unit - the unit as string
+ * @param {number} [weekday] - the ISO day of the week with 1 being Monday
+ * and 7 being Sunday (only needed if param *unit* is `isoWeek`).
+ * @function
+ */
+ startOf: abstract,
+
+ /**
+ * Returns end of `unit` for the given `timestamp`.
+ * @param {number} timestamp - the input timestamp
+ * @param {Unit} unit - the unit as string
+ * @function
+ */
+ endOf: abstract,
+
+ // DEPRECATIONS
+
+ /**
+ * Provided for backward compatibility for scale.getValueForPixel(),
+ * this method should be overridden only by the moment adapter.
+ * @deprecated since version 2.8.0
+ * @todo remove at version 3
+ * @private
+ */
+ _create: function(value) {
+ return value;
+ }
+});
+
+DateAdapter.override = function(members) {
+ helpers$1.extend(DateAdapter.prototype, members);
+};
+
+var _date = DateAdapter; + +var core_adapters = { + _date: _date +}; + +/**
+ * Namespace to hold static tick generation functions
+ * @namespace Chart.Ticks
+ */
+var core_ticks = {
+ /**
+ * Namespace to hold formatters for different types of ticks
+ * @namespace Chart.Ticks.formatters
+ */
+ formatters: {
+ /**
+ * Formatter for value labels
+ * @method Chart.Ticks.formatters.values
+ * @param value the value to display
+ * @return {string|string[]} the label to display
+ */
+ values: function(value) {
+ return helpers$1.isArray(value) ? value : '' + value;
+ },
+
+ /**
+ * Formatter for linear numeric ticks
+ * @method Chart.Ticks.formatters.linear
+ * @param tickValue {number} the value to be formatted
+ * @param index {number} the position of the tickValue parameter in the ticks array
+ * @param ticks {number[]} the list of ticks being converted
+ * @return {string} string representation of the tickValue parameter
+ */
+ linear: function(tickValue, index, ticks) {
+ // If we have lots of ticks, don't use the ones
+ var delta = ticks.length > 3 ? ticks[2] - ticks[1] : ticks[1] - ticks[0];
+
+ // If we have a number like 2.5 as the delta, figure out how many decimal places we need
+ if (Math.abs(delta) > 1) {
+ if (tickValue !== Math.floor(tickValue)) {
+ // not an integer
+ delta = tickValue - Math.floor(tickValue);
+ }
+ }
+
+ var logDelta = helpers$1.log10(Math.abs(delta));
+ var tickString = '';
+
+ if (tickValue !== 0) {
+ var maxTick = Math.max(Math.abs(ticks[0]), Math.abs(ticks[ticks.length - 1]));
+ if (maxTick < 1e-4) { // all ticks are small numbers; use scientific notation
+ var logTick = helpers$1.log10(Math.abs(tickValue));
+ var numExponential = Math.floor(logTick) - Math.floor(logDelta);
+ numExponential = Math.max(Math.min(numExponential, 20), 0);
+ tickString = tickValue.toExponential(numExponential);
+ } else {
+ var numDecimal = -1 * Math.floor(logDelta);
+ numDecimal = Math.max(Math.min(numDecimal, 20), 0); // toFixed has a max of 20 decimal places
+ tickString = tickValue.toFixed(numDecimal);
+ }
+ } else {
+ tickString = '0'; // never show decimal places for 0
+ }
+
+ return tickString;
+ },
+
+ logarithmic: function(tickValue, index, ticks) {
+ var remain = tickValue / (Math.pow(10, Math.floor(helpers$1.log10(tickValue))));
+
+ if (tickValue === 0) {
+ return '0';
+ } else if (remain === 1 || remain === 2 || remain === 5 || index === 0 || index === ticks.length - 1) {
+ return tickValue.toExponential();
+ }
+ return '';
+ }
+ }
+}; + +var isArray = helpers$1.isArray;
+var isNullOrUndef = helpers$1.isNullOrUndef;
+var valueOrDefault$a = helpers$1.valueOrDefault;
+var valueAtIndexOrDefault = helpers$1.valueAtIndexOrDefault;
+
+core_defaults._set('scale', {
+ display: true,
+ position: 'left',
+ offset: false,
+
+ // grid line settings
+ gridLines: {
+ display: true,
+ color: 'rgba(0,0,0,0.1)',
+ lineWidth: 1,
+ drawBorder: true,
+ drawOnChartArea: true,
+ drawTicks: true,
+ tickMarkLength: 10,
+ zeroLineWidth: 1,
+ zeroLineColor: 'rgba(0,0,0,0.25)',
+ zeroLineBorderDash: [],
+ zeroLineBorderDashOffset: 0.0,
+ offsetGridLines: false,
+ borderDash: [],
+ borderDashOffset: 0.0
+ },
+
+ // scale label
+ scaleLabel: {
+ // display property
+ display: false,
+
+ // actual label
+ labelString: '',
+
+ // top/bottom padding
+ padding: {
+ top: 4,
+ bottom: 4
+ }
+ },
+
+ // label settings
+ ticks: {
+ beginAtZero: false,
+ minRotation: 0,
+ maxRotation: 50,
+ mirror: false,
+ padding: 0,
+ reverse: false,
+ display: true,
+ autoSkip: true,
+ autoSkipPadding: 0,
+ labelOffset: 0,
+ // We pass through arrays to be rendered as multiline labels, we convert Others to strings here.
+ callback: core_ticks.formatters.values,
+ minor: {},
+ major: {}
+ }
+});
+
+/** Returns a new array containing numItems from arr */
+function sample(arr, numItems) {
+ var result = [];
+ var increment = arr.length / numItems;
+ var i = 0;
+ var len = arr.length;
+
+ for (; i < len; i += increment) {
+ result.push(arr[Math.floor(i)]);
+ }
+ return result;
+}
+
+function getPixelForGridLine(scale, index, offsetGridLines) {
+ var length = scale.getTicks().length;
+ var validIndex = Math.min(index, length - 1);
+ var lineValue = scale.getPixelForTick(validIndex);
+ var start = scale._startPixel;
+ var end = scale._endPixel;
+ var epsilon = 1e-6; // 1e-6 is margin in pixels for accumulated error.
+ var offset;
+
+ if (offsetGridLines) {
+ if (length === 1) {
+ offset = Math.max(lineValue - start, end - lineValue);
+ } else if (index === 0) {
+ offset = (scale.getPixelForTick(1) - lineValue) / 2;
+ } else {
+ offset = (lineValue - scale.getPixelForTick(validIndex - 1)) / 2;
+ }
+ lineValue += validIndex < index ? offset : -offset;
+
+ // Return undefined if the pixel is out of the range
+ if (lineValue < start - epsilon || lineValue > end + epsilon) {
+ return;
+ }
+ }
+ return lineValue;
+}
+
+function garbageCollect(caches, length) {
+ helpers$1.each(caches, function(cache) {
+ var gc = cache.gc;
+ var gcLen = gc.length / 2;
+ var i;
+ if (gcLen > length) {
+ for (i = 0; i < gcLen; ++i) {
+ delete cache.data[gc[i]];
+ }
+ gc.splice(0, gcLen);
+ }
+ });
+}
+
+/**
+ * Returns {width, height, offset} objects for the first, last, widest, highest tick
+ * labels where offset indicates the anchor point offset from the top in pixels.
+ */
+function computeLabelSizes(ctx, tickFonts, ticks, caches) {
+ var length = ticks.length;
+ var widths = [];
+ var heights = [];
+ var offsets = [];
+ var widestLabelSize = 0;
+ var highestLabelSize = 0;
+ var i, j, jlen, label, tickFont, fontString, cache, lineHeight, width, height, nestedLabel, widest, highest;
+
+ for (i = 0; i < length; ++i) {
+ label = ticks[i].label;
+ tickFont = ticks[i].major ? tickFonts.major : tickFonts.minor;
+ ctx.font = fontString = tickFont.string;
+ cache = caches[fontString] = caches[fontString] || {data: {}, gc: []};
+ lineHeight = tickFont.lineHeight;
+ width = height = 0;
+ // Undefined labels and arrays should not be measured
+ if (!isNullOrUndef(label) && !isArray(label)) {
+ width = helpers$1.measureText(ctx, cache.data, cache.gc, width, label);
+ height = lineHeight;
+ } else if (isArray(label)) {
+ // if it is an array let's measure each element
+ for (j = 0, jlen = label.length; j < jlen; ++j) {
+ nestedLabel = label[j];
+ // Undefined labels and arrays should not be measured
+ if (!isNullOrUndef(nestedLabel) && !isArray(nestedLabel)) {
+ width = helpers$1.measureText(ctx, cache.data, cache.gc, width, nestedLabel);
+ height += lineHeight;
+ }
+ }
+ }
+ widths.push(width);
+ heights.push(height);
+ offsets.push(lineHeight / 2);
+ widestLabelSize = Math.max(width, widestLabelSize);
+ highestLabelSize = Math.max(height, highestLabelSize);
+ }
+ garbageCollect(caches, length);
+
+ widest = widths.indexOf(widestLabelSize);
+ highest = heights.indexOf(highestLabelSize);
+
+ function valueAt(idx) {
+ return {
+ width: widths[idx] || 0,
+ height: heights[idx] || 0,
+ offset: offsets[idx] || 0
+ };
+ }
+
+ return {
+ first: valueAt(0),
+ last: valueAt(length - 1),
+ widest: valueAt(widest),
+ highest: valueAt(highest)
+ };
+}
+
+function getTickMarkLength(options) {
+ return options.drawTicks ? options.tickMarkLength : 0;
+}
+
+function getScaleLabelHeight(options) {
+ var font, padding;
+
+ if (!options.display) {
+ return 0;
+ }
+
+ font = helpers$1.options._parseFont(options);
+ padding = helpers$1.options.toPadding(options.padding);
+
+ return font.lineHeight + padding.height;
+}
+
+function parseFontOptions(options, nestedOpts) {
+ return helpers$1.extend(helpers$1.options._parseFont({
+ fontFamily: valueOrDefault$a(nestedOpts.fontFamily, options.fontFamily),
+ fontSize: valueOrDefault$a(nestedOpts.fontSize, options.fontSize),
+ fontStyle: valueOrDefault$a(nestedOpts.fontStyle, options.fontStyle),
+ lineHeight: valueOrDefault$a(nestedOpts.lineHeight, options.lineHeight)
+ }), {
+ color: helpers$1.options.resolve([nestedOpts.fontColor, options.fontColor, core_defaults.global.defaultFontColor])
+ });
+}
+
+function parseTickFontOptions(options) {
+ var minor = parseFontOptions(options, options.minor);
+ var major = options.major.enabled ? parseFontOptions(options, options.major) : minor;
+
+ return {minor: minor, major: major};
+}
+
+function nonSkipped(ticksToFilter) {
+ var filtered = [];
+ var item, index, len;
+ for (index = 0, len = ticksToFilter.length; index < len; ++index) {
+ item = ticksToFilter[index];
+ if (typeof item._index !== 'undefined') {
+ filtered.push(item);
+ }
+ }
+ return filtered;
+}
+
+function getEvenSpacing(arr) {
+ var len = arr.length;
+ var i, diff;
+
+ if (len < 2) {
+ return false;
+ }
+
+ for (diff = arr[0], i = 1; i < len; ++i) {
+ if (arr[i] - arr[i - 1] !== diff) {
+ return false;
+ }
+ }
+ return diff;
+}
+
+function calculateSpacing(majorIndices, ticks, axisLength, ticksLimit) {
+ var evenMajorSpacing = getEvenSpacing(majorIndices);
+ var spacing = (ticks.length - 1) / ticksLimit;
+ var factors, factor, i, ilen;
+
+ // If the major ticks are evenly spaced apart, place the minor ticks
+ // so that they divide the major ticks into even chunks
+ if (!evenMajorSpacing) {
+ return Math.max(spacing, 1);
+ }
+
+ factors = helpers$1.math._factorize(evenMajorSpacing);
+ for (i = 0, ilen = factors.length - 1; i < ilen; i++) {
+ factor = factors[i];
+ if (factor > spacing) {
+ return factor;
+ }
+ }
+ return Math.max(spacing, 1);
+}
+
+function getMajorIndices(ticks) {
+ var result = [];
+ var i, ilen;
+ for (i = 0, ilen = ticks.length; i < ilen; i++) {
+ if (ticks[i].major) {
+ result.push(i);
+ }
+ }
+ return result;
+}
+
+function skipMajors(ticks, majorIndices, spacing) {
+ var count = 0;
+ var next = majorIndices[0];
+ var i, tick;
+
+ spacing = Math.ceil(spacing);
+ for (i = 0; i < ticks.length; i++) {
+ tick = ticks[i];
+ if (i === next) {
+ tick._index = i;
+ count++;
+ next = majorIndices[count * spacing];
+ } else {
+ delete tick.label;
+ }
+ }
+}
+
+function skip(ticks, spacing, majorStart, majorEnd) {
+ var start = valueOrDefault$a(majorStart, 0);
+ var end = Math.min(valueOrDefault$a(majorEnd, ticks.length), ticks.length);
+ var count = 0;
+ var length, i, tick, next;
+
+ spacing = Math.ceil(spacing);
+ if (majorEnd) {
+ length = majorEnd - majorStart;
+ spacing = length / Math.floor(length / spacing);
+ }
+
+ next = start;
+
+ while (next < 0) {
+ count++;
+ next = Math.round(start + count * spacing);
+ }
+
+ for (i = Math.max(start, 0); i < end; i++) {
+ tick = ticks[i];
+ if (i === next) {
+ tick._index = i;
+ count++;
+ next = Math.round(start + count * spacing);
+ } else {
+ delete tick.label;
+ }
+ }
+}
+
+var Scale = core_element.extend({
+
+ zeroLineIndex: 0,
+
+ /**
+ * Get the padding needed for the scale
+ * @method getPadding
+ * @private
+ * @returns {Padding} the necessary padding
+ */
+ getPadding: function() {
+ var me = this;
+ return {
+ left: me.paddingLeft || 0,
+ top: me.paddingTop || 0,
+ right: me.paddingRight || 0,
+ bottom: me.paddingBottom || 0
+ };
+ },
+
+ /**
+ * Returns the scale tick objects ({label, major})
+ * @since 2.7
+ */
+ getTicks: function() {
+ return this._ticks;
+ },
+
+ /**
+ * @private
+ */
+ _getLabels: function() {
+ var data = this.chart.data;
+ return this.options.labels || (this.isHorizontal() ? data.xLabels : data.yLabels) || data.labels || [];
+ },
+
+ // 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
+
+ /**
+ * Provided for backward compatibility, not available anymore
+ * @function Chart.Scale.mergeTicksOptions
+ * @deprecated since version 2.8.0
+ * @todo remove at version 3
+ */
+ mergeTicksOptions: function() {
+ // noop
+ },
+
+ beforeUpdate: function() {
+ helpers$1.callback(this.options.beforeUpdate, [this]);
+ },
+
+ /**
+ * @param {number} maxWidth - the max width in pixels
+ * @param {number} maxHeight - the max height in pixels
+ * @param {object} margins - the space between the edge of the other scales and edge of the chart
+ * This space comes from two sources:
+ * - padding - space that's required to show the labels at the edges of the scale
+ * - thickness of scales or legends in another orientation
+ */
+ update: function(maxWidth, maxHeight, margins) {
+ var me = this;
+ var tickOpts = me.options.ticks;
+ var sampleSize = tickOpts.sampleSize;
+ var i, ilen, labels, ticks, samplingEnabled;
+
+ // Update Lifecycle - Probably don't want to ever extend or overwrite this function ;)
+ me.beforeUpdate();
+
+ // Absorb the master measurements
+ me.maxWidth = maxWidth;
+ me.maxHeight = maxHeight;
+ me.margins = helpers$1.extend({
+ left: 0,
+ right: 0,
+ top: 0,
+ bottom: 0
+ }, margins);
+
+ me._ticks = null;
+ me.ticks = null;
+ me._labelSizes = null;
+ me._maxLabelLines = 0;
+ me.longestLabelWidth = 0;
+ me.longestTextCache = me.longestTextCache || {};
+ me._gridLineItems = null;
+ me._labelItems = null;
+
+ // Dimensions
+ me.beforeSetDimensions();
+ me.setDimensions();
+ me.afterSetDimensions();
+
+ // Data min/max
+ me.beforeDataLimits();
+ me.determineDataLimits();
+ me.afterDataLimits();
+
+ // Ticks - `this.ticks` is now DEPRECATED!
+ // Internal ticks are now stored as objects in the PRIVATE `this._ticks` member
+ // and must not be accessed directly from outside this class. `this.ticks` being
+ // around for long time and not marked as private, we can't change its structure
+ // without unexpected breaking changes. If you need to access the scale ticks,
+ // use scale.getTicks() instead.
+
+ me.beforeBuildTicks();
+
+ // New implementations should return an array of objects but for BACKWARD COMPAT,
+ // we still support no return (`this.ticks` internally set by calling this method).
+ ticks = me.buildTicks() || [];
+
+ // Allow modification of ticks in callback.
+ ticks = me.afterBuildTicks(ticks) || ticks;
+
+ // Ensure ticks contains ticks in new tick format
+ if ((!ticks || !ticks.length) && me.ticks) {
+ ticks = [];
+ for (i = 0, ilen = me.ticks.length; i < ilen; ++i) {
+ ticks.push({
+ value: me.ticks[i],
+ major: false
+ });
+ }
+ }
+
+ me._ticks = ticks;
+
+ // Compute tick rotation and fit using a sampled subset of labels
+ // We generally don't need to compute the size of every single label for determining scale size
+ samplingEnabled = sampleSize < ticks.length;
+ labels = me._convertTicksToLabels(samplingEnabled ? sample(ticks, sampleSize) : ticks);
+
+ // _configure is called twice, once here, once from core.controller.updateLayout.
+ // Here we haven't been positioned yet, but dimensions are correct.
+ // Variables set in _configure are needed for calculateTickRotation, and
+ // it's ok that coordinates are not correct there, only dimensions matter.
+ me._configure();
+
+ // Tick Rotation
+ me.beforeCalculateTickRotation();
+ me.calculateTickRotation();
+ me.afterCalculateTickRotation();
+
+ me.beforeFit();
+ me.fit();
+ me.afterFit();
+
+ // Auto-skip
+ me._ticksToDraw = tickOpts.display && (tickOpts.autoSkip || tickOpts.source === 'auto') ? me._autoSkip(ticks) : ticks;
+
+ if (samplingEnabled) {
+ // Generate labels using all non-skipped ticks
+ labels = me._convertTicksToLabels(me._ticksToDraw);
+ }
+
+ me.ticks = labels; // BACKWARD COMPATIBILITY
+
+ // IMPORTANT: after this point, we consider that `this.ticks` will NEVER change!
+
+ me.afterUpdate();
+
+ // TODO(v3): remove minSize as a public property and return value from all layout boxes. It is unused
+ // make maxWidth and maxHeight private
+ return me.minSize;
+ },
+
+ /**
+ * @private
+ */
+ _configure: function() {
+ var me = this;
+ var reversePixels = me.options.ticks.reverse;
+ var startPixel, endPixel;
+
+ if (me.isHorizontal()) {
+ startPixel = me.left;
+ endPixel = me.right;
+ } else {
+ startPixel = me.top;
+ endPixel = me.bottom;
+ // by default vertical scales are from bottom to top, so pixels are reversed
+ reversePixels = !reversePixels;
+ }
+ me._startPixel = startPixel;
+ me._endPixel = endPixel;
+ me._reversePixels = reversePixels;
+ me._length = endPixel - startPixel;
+ },
+
+ afterUpdate: function() {
+ helpers$1.callback(this.options.afterUpdate, [this]);
+ },
+
+ //
+
+ beforeSetDimensions: function() {
+ helpers$1.callback(this.options.beforeSetDimensions, [this]);
+ },
+ setDimensions: function() {
+ var me = this;
+ // Set the unconstrained dimension before label rotation
+ if (me.isHorizontal()) {
+ // Reset position before calculating rotation
+ me.width = me.maxWidth;
+ me.left = 0;
+ me.right = me.width;
+ } else {
+ me.height = me.maxHeight;
+
+ // Reset position before calculating rotation
+ me.top = 0;
+ me.bottom = me.height;
+ }
+
+ // Reset padding
+ me.paddingLeft = 0;
+ me.paddingTop = 0;
+ me.paddingRight = 0;
+ me.paddingBottom = 0;
+ },
+ afterSetDimensions: function() {
+ helpers$1.callback(this.options.afterSetDimensions, [this]);
+ },
+
+ // Data limits
+ beforeDataLimits: function() {
+ helpers$1.callback(this.options.beforeDataLimits, [this]);
+ },
+ determineDataLimits: helpers$1.noop,
+ afterDataLimits: function() {
+ helpers$1.callback(this.options.afterDataLimits, [this]);
+ },
+
+ //
+ beforeBuildTicks: function() {
+ helpers$1.callback(this.options.beforeBuildTicks, [this]);
+ },
+ buildTicks: helpers$1.noop,
+ afterBuildTicks: function(ticks) {
+ var me = this;
+ // ticks is empty for old axis implementations here
+ if (isArray(ticks) && ticks.length) {
+ return helpers$1.callback(me.options.afterBuildTicks, [me, ticks]);
+ }
+ // Support old implementations (that modified `this.ticks` directly in buildTicks)
+ me.ticks = helpers$1.callback(me.options.afterBuildTicks, [me, me.ticks]) || me.ticks;
+ return ticks;
+ },
+
+ beforeTickToLabelConversion: function() {
+ helpers$1.callback(this.options.beforeTickToLabelConversion, [this]);
+ },
+ convertTicksToLabels: function() {
+ var me = this;
+ // Convert ticks to strings
+ var tickOpts = me.options.ticks;
+ me.ticks = me.ticks.map(tickOpts.userCallback || tickOpts.callback, this);
+ },
+ afterTickToLabelConversion: function() {
+ helpers$1.callback(this.options.afterTickToLabelConversion, [this]);
+ },
+
+ //
+
+ beforeCalculateTickRotation: function() {
+ helpers$1.callback(this.options.beforeCalculateTickRotation, [this]);
+ },
+ calculateTickRotation: function() {
+ var me = this;
+ var options = me.options;
+ var tickOpts = options.ticks;
+ var numTicks = me.getTicks().length;
+ var minRotation = tickOpts.minRotation || 0;
+ var maxRotation = tickOpts.maxRotation;
+ var labelRotation = minRotation;
+ var labelSizes, maxLabelWidth, maxLabelHeight, maxWidth, tickWidth, maxHeight, maxLabelDiagonal;
+
+ if (!me._isVisible() || !tickOpts.display || minRotation >= maxRotation || numTicks <= 1 || !me.isHorizontal()) {
+ me.labelRotation = minRotation;
+ return;
+ }
+
+ labelSizes = me._getLabelSizes();
+ maxLabelWidth = labelSizes.widest.width;
+ maxLabelHeight = labelSizes.highest.height - labelSizes.highest.offset;
+
+ // Estimate the width of each grid based on the canvas width, the maximum
+ // label width and the number of tick intervals
+ maxWidth = Math.min(me.maxWidth, me.chart.width - maxLabelWidth);
+ tickWidth = options.offset ? me.maxWidth / numTicks : maxWidth / (numTicks - 1);
+
+ // Allow 3 pixels x2 padding either side for label readability
+ if (maxLabelWidth + 6 > tickWidth) {
+ tickWidth = maxWidth / (numTicks - (options.offset ? 0.5 : 1));
+ maxHeight = me.maxHeight - getTickMarkLength(options.gridLines)
+ - tickOpts.padding - getScaleLabelHeight(options.scaleLabel);
+ maxLabelDiagonal = Math.sqrt(maxLabelWidth * maxLabelWidth + maxLabelHeight * maxLabelHeight);
+ labelRotation = helpers$1.toDegrees(Math.min(
+ Math.asin(Math.min((labelSizes.highest.height + 6) / tickWidth, 1)),
+ Math.asin(Math.min(maxHeight / maxLabelDiagonal, 1)) - Math.asin(maxLabelHeight / maxLabelDiagonal)
+ ));
+ labelRotation = Math.max(minRotation, Math.min(maxRotation, labelRotation));
+ }
+
+ me.labelRotation = labelRotation;
+ },
+ afterCalculateTickRotation: function() {
+ helpers$1.callback(this.options.afterCalculateTickRotation, [this]);
+ },
+
+ //
+
+ beforeFit: function() {
+ helpers$1.callback(this.options.beforeFit, [this]);
+ },
+ fit: function() {
+ var me = this;
+ // Reset
+ var minSize = me.minSize = {
+ width: 0,
+ height: 0
+ };
+
+ var chart = me.chart;
+ var opts = me.options;
+ var tickOpts = opts.ticks;
+ var scaleLabelOpts = opts.scaleLabel;
+ var gridLineOpts = opts.gridLines;
+ var display = me._isVisible();
+ var isBottom = opts.position === 'bottom';
+ var isHorizontal = me.isHorizontal();
+
+ // Width
+ if (isHorizontal) {
+ minSize.width = me.maxWidth;
+ } else if (display) {
+ minSize.width = getTickMarkLength(gridLineOpts) + getScaleLabelHeight(scaleLabelOpts);
+ }
+
+ // height
+ if (!isHorizontal) {
+ minSize.height = me.maxHeight; // fill all the height
+ } else if (display) {
+ minSize.height = getTickMarkLength(gridLineOpts) + getScaleLabelHeight(scaleLabelOpts);
+ }
+
+ // Don't bother fitting the ticks if we are not showing the labels
+ if (tickOpts.display && display) {
+ var tickFonts = parseTickFontOptions(tickOpts);
+ var labelSizes = me._getLabelSizes();
+ var firstLabelSize = labelSizes.first;
+ var lastLabelSize = labelSizes.last;
+ var widestLabelSize = labelSizes.widest;
+ var highestLabelSize = labelSizes.highest;
+ var lineSpace = tickFonts.minor.lineHeight * 0.4;
+ var tickPadding = tickOpts.padding;
+
+ if (isHorizontal) {
+ // A horizontal axis is more constrained by the height.
+ var isRotated = me.labelRotation !== 0;
+ var angleRadians = helpers$1.toRadians(me.labelRotation);
+ var cosRotation = Math.cos(angleRadians);
+ var sinRotation = Math.sin(angleRadians);
+
+ var labelHeight = sinRotation * widestLabelSize.width
+ + cosRotation * (highestLabelSize.height - (isRotated ? highestLabelSize.offset : 0))
+ + (isRotated ? 0 : lineSpace); // padding
+
+ minSize.height = Math.min(me.maxHeight, minSize.height + labelHeight + tickPadding);
+
+ var offsetLeft = me.getPixelForTick(0) - me.left;
+ var offsetRight = me.right - me.getPixelForTick(me.getTicks().length - 1);
+ var paddingLeft, paddingRight;
+
+ // Ensure that our ticks are always inside the canvas. When rotated, ticks are right aligned
+ // which means that the right padding is dominated by the font height
+ if (isRotated) {
+ paddingLeft = isBottom ?
+ cosRotation * firstLabelSize.width + sinRotation * firstLabelSize.offset :
+ sinRotation * (firstLabelSize.height - firstLabelSize.offset);
+ paddingRight = isBottom ?
+ sinRotation * (lastLabelSize.height - lastLabelSize.offset) :
+ cosRotation * lastLabelSize.width + sinRotation * lastLabelSize.offset;
+ } else {
+ paddingLeft = firstLabelSize.width / 2;
+ paddingRight = lastLabelSize.width / 2;
+ }
+
+ // Adjust padding taking into account changes in offsets
+ // and add 3 px to move away from canvas edges
+ me.paddingLeft = Math.max((paddingLeft - offsetLeft) * me.width / (me.width - offsetLeft), 0) + 3;
+ me.paddingRight = Math.max((paddingRight - offsetRight) * me.width / (me.width - offsetRight), 0) + 3;
+ } else {
+ // A vertical axis is more constrained by the width. Labels are the
+ // dominant factor here, so get that length first and account for padding
+ var labelWidth = tickOpts.mirror ? 0 :
+ // use lineSpace for consistency with horizontal axis
+ // tickPadding is not implemented for horizontal
+ widestLabelSize.width + tickPadding + lineSpace;
+
+ minSize.width = Math.min(me.maxWidth, minSize.width + labelWidth);
+
+ me.paddingTop = firstLabelSize.height / 2;
+ me.paddingBottom = lastLabelSize.height / 2;
+ }
+ }
+
+ me.handleMargins();
+
+ if (isHorizontal) {
+ me.width = me._length = chart.width - me.margins.left - me.margins.right;
+ me.height = minSize.height;
+ } else {
+ me.width = minSize.width;
+ me.height = me._length = chart.height - me.margins.top - me.margins.bottom;
+ }
+ },
+
+ /**
+ * Handle margins and padding interactions
+ * @private
+ */
+ handleMargins: function() {
+ var me = this;
+ if (me.margins) {
+ me.margins.left = Math.max(me.paddingLeft, me.margins.left);
+ me.margins.top = Math.max(me.paddingTop, me.margins.top);
+ me.margins.right = Math.max(me.paddingRight, me.margins.right);
+ me.margins.bottom = Math.max(me.paddingBottom, me.margins.bottom);
+ }
+ },
+
+ afterFit: function() {
+ helpers$1.callback(this.options.afterFit, [this]);
+ },
+
+ // Shared Methods
+ isHorizontal: function() {
+ var pos = this.options.position;
+ return pos === 'top' || pos === 'bottom';
+ },
+ isFullWidth: function() {
+ return this.options.fullWidth;
+ },
+
+ // Get the correct value. NaN bad inputs, If the value type is object get the x or y based on whether we are horizontal or not
+ getRightValue: function(rawValue) {
+ // Null and undefined values first
+ if (isNullOrUndef(rawValue)) {
+ return NaN;
+ }
+ // isNaN(object) returns true, so make sure NaN is checking for a number; Discard Infinite values
+ if ((typeof rawValue === 'number' || rawValue instanceof Number) && !isFinite(rawValue)) {
+ return NaN;
+ }
+
+ // If it is in fact an object, dive in one more level
+ if (rawValue) {
+ if (this.isHorizontal()) {
+ if (rawValue.x !== undefined) {
+ return this.getRightValue(rawValue.x);
+ }
+ } else if (rawValue.y !== undefined) {
+ return this.getRightValue(rawValue.y);
+ }
+ }
+
+ // Value is good, return it
+ return rawValue;
+ },
+
+ _convertTicksToLabels: function(ticks) {
+ var me = this;
+ var labels, i, ilen;
+
+ me.ticks = ticks.map(function(tick) {
+ return tick.value;
+ });
+
+ me.beforeTickToLabelConversion();
+
+ // New implementations should return the formatted tick labels but for BACKWARD
+ // COMPAT, we still support no return (`this.ticks` internally changed by calling
+ // this method and supposed to contain only string values).
+ labels = me.convertTicksToLabels(ticks) || me.ticks;
+
+ me.afterTickToLabelConversion();
+
+ // BACKWARD COMPAT: synchronize `_ticks` with labels (so potentially `this.ticks`)
+ for (i = 0, ilen = ticks.length; i < ilen; ++i) {
+ ticks[i].label = labels[i];
+ }
+
+ return labels;
+ },
+
+ /**
+ * @private
+ */
+ _getLabelSizes: function() {
+ var me = this;
+ var labelSizes = me._labelSizes;
+
+ if (!labelSizes) {
+ me._labelSizes = labelSizes = computeLabelSizes(me.ctx, parseTickFontOptions(me.options.ticks), me.getTicks(), me.longestTextCache);
+ me.longestLabelWidth = labelSizes.widest.width;
+ }
+
+ return labelSizes;
+ },
+
+ /**
+ * @private
+ */
+ _parseValue: function(value) {
+ var start, end, min, max;
+
+ if (isArray(value)) {
+ start = +this.getRightValue(value[0]);
+ end = +this.getRightValue(value[1]);
+ min = Math.min(start, end);
+ max = Math.max(start, end);
+ } else {
+ value = +this.getRightValue(value);
+ start = undefined;
+ end = value;
+ min = value;
+ max = value;
+ }
+
+ return {
+ min: min,
+ max: max,
+ start: start,
+ end: end
+ };
+ },
+
+ /**
+ * @private
+ */
+ _getScaleLabel: function(rawValue) {
+ var v = this._parseValue(rawValue);
+ if (v.start !== undefined) {
+ return '[' + v.start + ', ' + v.end + ']';
+ }
+
+ return +this.getRightValue(rawValue);
+ },
+
+ /**
+ * Used to get the value to display in the tooltip for the data at the given index
+ * @param index
+ * @param datasetIndex
+ */
+ getLabelForIndex: helpers$1.noop,
+
+ /**
+ * Returns the location of the given data point. Value can either be an index or a numerical value
+ * The coordinate (0, 0) is at the upper-left corner of the canvas
+ * @param value
+ * @param index
+ * @param datasetIndex
+ */
+ getPixelForValue: helpers$1.noop,
+
+ /**
+ * Used to get the data value from a given pixel. This is the inverse of getPixelForValue
+ * The coordinate (0, 0) is at the upper-left corner of the canvas
+ * @param pixel
+ */
+ getValueForPixel: helpers$1.noop,
+
+ /**
+ * Returns the location of the tick at the given index
+ * The coordinate (0, 0) is at the upper-left corner of the canvas
+ */
+ getPixelForTick: function(index) {
+ var me = this;
+ var offset = me.options.offset;
+ var numTicks = me._ticks.length;
+ var tickWidth = 1 / Math.max(numTicks - (offset ? 0 : 1), 1);
+
+ return index < 0 || index > numTicks - 1
+ ? null
+ : me.getPixelForDecimal(index * tickWidth + (offset ? tickWidth / 2 : 0));
+ },
+
+ /**
+ * Utility for getting the pixel location of a percentage of scale
+ * The coordinate (0, 0) is at the upper-left corner of the canvas
+ */
+ getPixelForDecimal: function(decimal) {
+ var me = this;
+
+ if (me._reversePixels) {
+ decimal = 1 - decimal;
+ }
+
+ return me._startPixel + decimal * me._length;
+ },
+
+ getDecimalForPixel: function(pixel) {
+ var decimal = (pixel - this._startPixel) / this._length;
+ return this._reversePixels ? 1 - decimal : decimal;
+ },
+
+ /**
+ * Returns the pixel for the minimum chart value
+ * The coordinate (0, 0) is at the upper-left corner of the canvas
+ */
+ getBasePixel: function() {
+ return this.getPixelForValue(this.getBaseValue());
+ },
+
+ getBaseValue: function() {
+ var me = this;
+ var min = me.min;
+ var max = me.max;
+
+ return me.beginAtZero ? 0 :
+ min < 0 && max < 0 ? max :
+ min > 0 && max > 0 ? min :
+ 0;
+ },
+
+ /**
+ * Returns a subset of ticks to be plotted to avoid overlapping labels.
+ * @private
+ */
+ _autoSkip: function(ticks) {
+ var me = this;
+ var tickOpts = me.options.ticks;
+ var axisLength = me._length;
+ var ticksLimit = tickOpts.maxTicksLimit || axisLength / me._tickSize() + 1;
+ var majorIndices = tickOpts.major.enabled ? getMajorIndices(ticks) : [];
+ var numMajorIndices = majorIndices.length;
+ var first = majorIndices[0];
+ var last = majorIndices[numMajorIndices - 1];
+ var i, ilen, spacing, avgMajorSpacing;
+
+ // If there are too many major ticks to display them all
+ if (numMajorIndices > ticksLimit) {
+ skipMajors(ticks, majorIndices, numMajorIndices / ticksLimit);
+ return nonSkipped(ticks);
+ }
+
+ spacing = calculateSpacing(majorIndices, ticks, axisLength, ticksLimit);
+
+ if (numMajorIndices > 0) {
+ for (i = 0, ilen = numMajorIndices - 1; i < ilen; i++) {
+ skip(ticks, spacing, majorIndices[i], majorIndices[i + 1]);
+ }
+ avgMajorSpacing = numMajorIndices > 1 ? (last - first) / (numMajorIndices - 1) : null;
+ skip(ticks, spacing, helpers$1.isNullOrUndef(avgMajorSpacing) ? 0 : first - avgMajorSpacing, first);
+ skip(ticks, spacing, last, helpers$1.isNullOrUndef(avgMajorSpacing) ? ticks.length : last + avgMajorSpacing);
+ return nonSkipped(ticks);
+ }
+ skip(ticks, spacing);
+ return nonSkipped(ticks);
+ },
+
+ /**
+ * @private
+ */
+ _tickSize: function() {
+ var me = this;
+ var optionTicks = me.options.ticks;
+
+ // Calculate space needed by label in axis direction.
+ var rot = helpers$1.toRadians(me.labelRotation);
+ var cos = Math.abs(Math.cos(rot));
+ var sin = Math.abs(Math.sin(rot));
+
+ var labelSizes = me._getLabelSizes();
+ var padding = optionTicks.autoSkipPadding || 0;
+ var w = labelSizes ? labelSizes.widest.width + padding : 0;
+ var h = labelSizes ? labelSizes.highest.height + padding : 0;
+
+ // Calculate space needed for 1 tick in axis direction.
+ return me.isHorizontal()
+ ? h * cos > w * sin ? w / cos : h / sin
+ : h * sin < w * cos ? h / cos : w / sin;
+ },
+
+ /**
+ * @private
+ */
+ _isVisible: function() {
+ var me = this;
+ var chart = me.chart;
+ var display = me.options.display;
+ var i, ilen, meta;
+
+ if (display !== 'auto') {
+ return !!display;
+ }
+
+ // When 'auto', the scale is visible if at least one associated dataset is visible.
+ for (i = 0, ilen = chart.data.datasets.length; i < ilen; ++i) {
+ if (chart.isDatasetVisible(i)) {
+ meta = chart.getDatasetMeta(i);
+ if (meta.xAxisID === me.id || meta.yAxisID === me.id) {
+ return true;
+ }
+ }
+ }
+
+ return false;
+ },
+
+ /**
+ * @private
+ */
+ _computeGridLineItems: function(chartArea) {
+ var me = this;
+ var chart = me.chart;
+ var options = me.options;
+ var gridLines = options.gridLines;
+ var position = options.position;
+ var offsetGridLines = gridLines.offsetGridLines;
+ var isHorizontal = me.isHorizontal();
+ var ticks = me._ticksToDraw;
+ var ticksLength = ticks.length + (offsetGridLines ? 1 : 0);
+
+ var tl = getTickMarkLength(gridLines);
+ var items = [];
+ var axisWidth = gridLines.drawBorder ? valueAtIndexOrDefault(gridLines.lineWidth, 0, 0) : 0;
+ var axisHalfWidth = axisWidth / 2;
+ var alignPixel = helpers$1._alignPixel;
+ var alignBorderValue = function(pixel) {
+ return alignPixel(chart, pixel, axisWidth);
+ };
+ var borderValue, i, tick, lineValue, alignedLineValue;
+ var tx1, ty1, tx2, ty2, x1, y1, x2, y2, lineWidth, lineColor, borderDash, borderDashOffset;
+
+ if (position === 'top') {
+ borderValue = alignBorderValue(me.bottom);
+ ty1 = me.bottom - tl;
+ ty2 = borderValue - axisHalfWidth;
+ y1 = alignBorderValue(chartArea.top) + axisHalfWidth;
+ y2 = chartArea.bottom;
+ } else if (position === 'bottom') {
+ borderValue = alignBorderValue(me.top);
+ y1 = chartArea.top;
+ y2 = alignBorderValue(chartArea.bottom) - axisHalfWidth;
+ ty1 = borderValue + axisHalfWidth;
+ ty2 = me.top + tl;
+ } else if (position === 'left') {
+ borderValue = alignBorderValue(me.right);
+ tx1 = me.right - tl;
+ tx2 = borderValue - axisHalfWidth;
+ x1 = alignBorderValue(chartArea.left) + axisHalfWidth;
+ x2 = chartArea.right;
+ } else {
+ borderValue = alignBorderValue(me.left);
+ x1 = chartArea.left;
+ x2 = alignBorderValue(chartArea.right) - axisHalfWidth;
+ tx1 = borderValue + axisHalfWidth;
+ tx2 = me.left + tl;
+ }
+
+ for (i = 0; i < ticksLength; ++i) {
+ tick = ticks[i] || {};
+
+ // autoskipper skipped this tick (#4635)
+ if (isNullOrUndef(tick.label) && i < ticks.length) {
+ continue;
+ }
+
+ if (i === me.zeroLineIndex && options.offset === offsetGridLines) {
+ // Draw the first index specially
+ lineWidth = gridLines.zeroLineWidth;
+ lineColor = gridLines.zeroLineColor;
+ borderDash = gridLines.zeroLineBorderDash || [];
+ borderDashOffset = gridLines.zeroLineBorderDashOffset || 0.0;
+ } else {
+ lineWidth = valueAtIndexOrDefault(gridLines.lineWidth, i, 1);
+ lineColor = valueAtIndexOrDefault(gridLines.color, i, 'rgba(0,0,0,0.1)');
+ borderDash = gridLines.borderDash || [];
+ borderDashOffset = gridLines.borderDashOffset || 0.0;
+ }
+
+ lineValue = getPixelForGridLine(me, tick._index || i, offsetGridLines);
+
+ // Skip if the pixel is out of the range
+ if (lineValue === undefined) {
+ continue;
+ }
+
+ alignedLineValue = alignPixel(chart, lineValue, lineWidth);
+
+ if (isHorizontal) {
+ tx1 = tx2 = x1 = x2 = alignedLineValue;
+ } else {
+ ty1 = ty2 = y1 = y2 = alignedLineValue;
+ }
+
+ items.push({
+ tx1: tx1,
+ ty1: ty1,
+ tx2: tx2,
+ ty2: ty2,
+ x1: x1,
+ y1: y1,
+ x2: x2,
+ y2: y2,
+ width: lineWidth,
+ color: lineColor,
+ borderDash: borderDash,
+ borderDashOffset: borderDashOffset,
+ });
+ }
+
+ items.ticksLength = ticksLength;
+ items.borderValue = borderValue;
+
+ return items;
+ },
+
+ /**
+ * @private
+ */
+ _computeLabelItems: function() {
+ var me = this;
+ var options = me.options;
+ var optionTicks = options.ticks;
+ var position = options.position;
+ var isMirrored = optionTicks.mirror;
+ var isHorizontal = me.isHorizontal();
+ var ticks = me._ticksToDraw;
+ var fonts = parseTickFontOptions(optionTicks);
+ var tickPadding = optionTicks.padding;
+ var tl = getTickMarkLength(options.gridLines);
+ var rotation = -helpers$1.toRadians(me.labelRotation);
+ var items = [];
+ var i, ilen, tick, label, x, y, textAlign, pixel, font, lineHeight, lineCount, textOffset;
+
+ if (position === 'top') {
+ y = me.bottom - tl - tickPadding;
+ textAlign = !rotation ? 'center' : 'left';
+ } else if (position === 'bottom') {
+ y = me.top + tl + tickPadding;
+ textAlign = !rotation ? 'center' : 'right';
+ } else if (position === 'left') {
+ x = me.right - (isMirrored ? 0 : tl) - tickPadding;
+ textAlign = isMirrored ? 'left' : 'right';
+ } else {
+ x = me.left + (isMirrored ? 0 : tl) + tickPadding;
+ textAlign = isMirrored ? 'right' : 'left';
+ }
+
+ for (i = 0, ilen = ticks.length; i < ilen; ++i) {
+ tick = ticks[i];
+ label = tick.label;
+
+ // autoskipper skipped this tick (#4635)
+ if (isNullOrUndef(label)) {
+ continue;
+ }
+
+ pixel = me.getPixelForTick(tick._index || i) + optionTicks.labelOffset;
+ font = tick.major ? fonts.major : fonts.minor;
+ lineHeight = font.lineHeight;
+ lineCount = isArray(label) ? label.length : 1;
+
+ if (isHorizontal) {
+ x = pixel;
+ textOffset = position === 'top'
+ ? ((!rotation ? 0.5 : 1) - lineCount) * lineHeight
+ : (!rotation ? 0.5 : 0) * lineHeight;
+ } else {
+ y = pixel;
+ textOffset = (1 - lineCount) * lineHeight / 2;
+ }
+
+ items.push({
+ x: x,
+ y: y,
+ rotation: rotation,
+ label: label,
+ font: font,
+ textOffset: textOffset,
+ textAlign: textAlign
+ });
+ }
+
+ return items;
+ },
+
+ /**
+ * @private
+ */
+ _drawGrid: function(chartArea) {
+ var me = this;
+ var gridLines = me.options.gridLines;
+
+ if (!gridLines.display) {
+ return;
+ }
+
+ var ctx = me.ctx;
+ var chart = me.chart;
+ var alignPixel = helpers$1._alignPixel;
+ var axisWidth = gridLines.drawBorder ? valueAtIndexOrDefault(gridLines.lineWidth, 0, 0) : 0;
+ var items = me._gridLineItems || (me._gridLineItems = me._computeGridLineItems(chartArea));
+ var width, color, i, ilen, item;
+
+ for (i = 0, ilen = items.length; i < ilen; ++i) {
+ item = items[i];
+ width = item.width;
+ color = item.color;
+
+ if (width && color) {
+ ctx.save();
+ ctx.lineWidth = width;
+ ctx.strokeStyle = color;
+ if (ctx.setLineDash) {
+ ctx.setLineDash(item.borderDash);
+ ctx.lineDashOffset = item.borderDashOffset;
+ }
+
+ ctx.beginPath();
+
+ if (gridLines.drawTicks) {
+ ctx.moveTo(item.tx1, item.ty1);
+ ctx.lineTo(item.tx2, item.ty2);
+ }
+
+ if (gridLines.drawOnChartArea) {
+ ctx.moveTo(item.x1, item.y1);
+ ctx.lineTo(item.x2, item.y2);
+ }
+
+ ctx.stroke();
+ ctx.restore();
+ }
+ }
+
+ if (axisWidth) {
+ // Draw the line at the edge of the axis
+ var firstLineWidth = axisWidth;
+ var lastLineWidth = valueAtIndexOrDefault(gridLines.lineWidth, items.ticksLength - 1, 1);
+ var borderValue = items.borderValue;
+ var x1, x2, y1, y2;
+
+ if (me.isHorizontal()) {
+ x1 = alignPixel(chart, me.left, firstLineWidth) - firstLineWidth / 2;
+ x2 = alignPixel(chart, me.right, lastLineWidth) + lastLineWidth / 2;
+ y1 = y2 = borderValue;
+ } else {
+ y1 = alignPixel(chart, me.top, firstLineWidth) - firstLineWidth / 2;
+ y2 = alignPixel(chart, me.bottom, lastLineWidth) + lastLineWidth / 2;
+ x1 = x2 = borderValue;
+ }
+
+ ctx.lineWidth = axisWidth;
+ ctx.strokeStyle = valueAtIndexOrDefault(gridLines.color, 0);
+ ctx.beginPath();
+ ctx.moveTo(x1, y1);
+ ctx.lineTo(x2, y2);
+ ctx.stroke();
+ }
+ },
+
+ /**
+ * @private
+ */
+ _drawLabels: function() {
+ var me = this;
+ var optionTicks = me.options.ticks;
+
+ if (!optionTicks.display) {
+ return;
+ }
+
+ var ctx = me.ctx;
+ var items = me._labelItems || (me._labelItems = me._computeLabelItems());
+ var i, j, ilen, jlen, item, tickFont, label, y;
+
+ for (i = 0, ilen = items.length; i < ilen; ++i) {
+ item = items[i];
+ tickFont = item.font;
+
+ // Make sure we draw text in the correct color and font
+ ctx.save();
+ ctx.translate(item.x, item.y);
+ ctx.rotate(item.rotation);
+ ctx.font = tickFont.string;
+ ctx.fillStyle = tickFont.color;
+ ctx.textBaseline = 'middle';
+ ctx.textAlign = item.textAlign;
+
+ label = item.label;
+ y = item.textOffset;
+ if (isArray(label)) {
+ for (j = 0, jlen = label.length; j < jlen; ++j) {
+ // We just make sure the multiline element is a string here..
+ ctx.fillText('' + label[j], 0, y);
+ y += tickFont.lineHeight;
+ }
+ } else {
+ ctx.fillText(label, 0, y);
+ }
+ ctx.restore();
+ }
+ },
+
+ /**
+ * @private
+ */
+ _drawTitle: function() {
+ var me = this;
+ var ctx = me.ctx;
+ var options = me.options;
+ var scaleLabel = options.scaleLabel;
+
+ if (!scaleLabel.display) {
+ return;
+ }
+
+ var scaleLabelFontColor = valueOrDefault$a(scaleLabel.fontColor, core_defaults.global.defaultFontColor);
+ var scaleLabelFont = helpers$1.options._parseFont(scaleLabel);
+ var scaleLabelPadding = helpers$1.options.toPadding(scaleLabel.padding);
+ var halfLineHeight = scaleLabelFont.lineHeight / 2;
+ var position = options.position;
+ var rotation = 0;
+ var scaleLabelX, scaleLabelY;
+
+ if (me.isHorizontal()) {
+ scaleLabelX = me.left + me.width / 2; // midpoint of the width
+ scaleLabelY = position === 'bottom'
+ ? me.bottom - halfLineHeight - scaleLabelPadding.bottom
+ : me.top + halfLineHeight + scaleLabelPadding.top;
+ } else {
+ var isLeft = position === 'left';
+ scaleLabelX = isLeft
+ ? me.left + halfLineHeight + scaleLabelPadding.top
+ : me.right - halfLineHeight - scaleLabelPadding.top;
+ scaleLabelY = me.top + me.height / 2;
+ rotation = isLeft ? -0.5 * Math.PI : 0.5 * Math.PI;
+ }
+
+ ctx.save();
+ ctx.translate(scaleLabelX, scaleLabelY);
+ ctx.rotate(rotation);
+ ctx.textAlign = 'center';
+ ctx.textBaseline = 'middle';
+ ctx.fillStyle = scaleLabelFontColor; // render in correct colour
+ ctx.font = scaleLabelFont.string;
+ ctx.fillText(scaleLabel.labelString, 0, 0);
+ ctx.restore();
+ },
+
+ draw: function(chartArea) {
+ var me = this;
+
+ if (!me._isVisible()) {
+ return;
+ }
+
+ me._drawGrid(chartArea);
+ me._drawTitle();
+ me._drawLabels();
+ },
+
+ /**
+ * @private
+ */
+ _layers: function() {
+ var me = this;
+ var opts = me.options;
+ var tz = opts.ticks && opts.ticks.z || 0;
+ var gz = opts.gridLines && opts.gridLines.z || 0;
+
+ if (!me._isVisible() || tz === gz || me.draw !== me._draw) {
+ // backward compatibility: draw has been overridden by custom scale
+ return [{
+ z: tz,
+ draw: function() {
+ me.draw.apply(me, arguments);
+ }
+ }];
+ }
+
+ return [{
+ z: gz,
+ draw: function() {
+ me._drawGrid.apply(me, arguments);
+ me._drawTitle.apply(me, arguments);
+ }
+ }, {
+ z: tz,
+ draw: function() {
+ me._drawLabels.apply(me, arguments);
+ }
+ }];
+ },
+
+ /**
+ * @private
+ */
+ _getMatchingVisibleMetas: function(type) {
+ var me = this;
+ var isHorizontal = me.isHorizontal();
+ return me.chart._getSortedVisibleDatasetMetas()
+ .filter(function(meta) {
+ return (!type || meta.type === type)
+ && (isHorizontal ? meta.xAxisID === me.id : meta.yAxisID === me.id);
+ });
+ }
+});
+
+Scale.prototype._draw = Scale.prototype.draw;
+
+var core_scale = Scale; + +var isNullOrUndef$1 = helpers$1.isNullOrUndef;
+
+var defaultConfig = {
+ position: 'bottom'
+};
+
+var scale_category = core_scale.extend({
+ determineDataLimits: function() {
+ var me = this;
+ var labels = me._getLabels();
+ var ticksOpts = me.options.ticks;
+ var min = ticksOpts.min;
+ var max = ticksOpts.max;
+ var minIndex = 0;
+ var maxIndex = labels.length - 1;
+ var findIndex;
+
+ if (min !== undefined) {
+ // user specified min value
+ findIndex = labels.indexOf(min);
+ if (findIndex >= 0) {
+ minIndex = findIndex;
+ }
+ }
+
+ if (max !== undefined) {
+ // user specified max value
+ findIndex = labels.indexOf(max);
+ if (findIndex >= 0) {
+ maxIndex = findIndex;
+ }
+ }
+
+ me.minIndex = minIndex;
+ me.maxIndex = maxIndex;
+ me.min = labels[minIndex];
+ me.max = labels[maxIndex];
+ },
+
+ buildTicks: function() {
+ var me = this;
+ var labels = me._getLabels();
+ var minIndex = me.minIndex;
+ var maxIndex = me.maxIndex;
+
+ // If we are viewing some subset of labels, slice the original array
+ me.ticks = (minIndex === 0 && maxIndex === labels.length - 1) ? labels : labels.slice(minIndex, maxIndex + 1);
+ },
+
+ getLabelForIndex: function(index, datasetIndex) {
+ var me = this;
+ var chart = me.chart;
+
+ if (chart.getDatasetMeta(datasetIndex).controller._getValueScaleId() === me.id) {
+ return me.getRightValue(chart.data.datasets[datasetIndex].data[index]);
+ }
+
+ return me._getLabels()[index];
+ },
+
+ _configure: function() {
+ var me = this;
+ var offset = me.options.offset;
+ var ticks = me.ticks;
+
+ core_scale.prototype._configure.call(me);
+
+ if (!me.isHorizontal()) {
+ // For backward compatibility, vertical category scale reverse is inverted.
+ me._reversePixels = !me._reversePixels;
+ }
+
+ if (!ticks) {
+ return;
+ }
+
+ me._startValue = me.minIndex - (offset ? 0.5 : 0);
+ me._valueRange = Math.max(ticks.length - (offset ? 0 : 1), 1);
+ },
+
+ // Used to get data value locations. Value can either be an index or a numerical value
+ getPixelForValue: function(value, index, datasetIndex) {
+ var me = this;
+ var valueCategory, labels, idx;
+
+ if (!isNullOrUndef$1(index) && !isNullOrUndef$1(datasetIndex)) {
+ value = me.chart.data.datasets[datasetIndex].data[index];
+ }
+
+ // If value is a data object, then index is the index in the data array,
+ // not the index of the scale. We need to change that.
+ if (!isNullOrUndef$1(value)) {
+ valueCategory = me.isHorizontal() ? value.x : value.y;
+ }
+ if (valueCategory !== undefined || (value !== undefined && isNaN(index))) {
+ labels = me._getLabels();
+ value = helpers$1.valueOrDefault(valueCategory, value);
+ idx = labels.indexOf(value);
+ index = idx !== -1 ? idx : index;
+ if (isNaN(index)) {
+ index = value;
+ }
+ }
+ return me.getPixelForDecimal((index - me._startValue) / me._valueRange);
+ },
+
+ getPixelForTick: function(index) {
+ var ticks = this.ticks;
+ return index < 0 || index > ticks.length - 1
+ ? null
+ : this.getPixelForValue(ticks[index], index + this.minIndex);
+ },
+
+ getValueForPixel: function(pixel) {
+ var me = this;
+ var value = Math.round(me._startValue + me.getDecimalForPixel(pixel) * me._valueRange);
+ return Math.min(Math.max(value, 0), me.ticks.length - 1);
+ },
+
+ getBasePixel: function() {
+ return this.bottom;
+ }
+});
+
+// INTERNAL: static default options, registered in src/index.js
+var _defaults = defaultConfig; +scale_category._defaults = _defaults; + +var noop = helpers$1.noop;
+var isNullOrUndef$2 = helpers$1.isNullOrUndef;
+
+/**
+ * Generate a set of linear ticks
+ * @param generationOptions the options used to generate the ticks
+ * @param dataRange the range of the data
+ * @returns {number[]} array of tick values
+ */
+function generateTicks(generationOptions, dataRange) {
+ var ticks = [];
+ // To get a "nice" value for the tick spacing, we will use the appropriately named
+ // "nice number" algorithm. See https://stackoverflow.com/questions/8506881/nice-label-algorithm-for-charts-with-minimum-ticks
+ // for details.
+
+ var MIN_SPACING = 1e-14;
+ var stepSize = generationOptions.stepSize;
+ var unit = stepSize || 1;
+ var maxNumSpaces = generationOptions.maxTicks - 1;
+ var min = generationOptions.min;
+ var max = generationOptions.max;
+ var precision = generationOptions.precision;
+ var rmin = dataRange.min;
+ var rmax = dataRange.max;
+ var spacing = helpers$1.niceNum((rmax - rmin) / maxNumSpaces / unit) * unit;
+ var factor, niceMin, niceMax, numSpaces;
+
+ // Beyond MIN_SPACING floating point numbers being to lose precision
+ // such that we can't do the math necessary to generate ticks
+ if (spacing < MIN_SPACING && isNullOrUndef$2(min) && isNullOrUndef$2(max)) {
+ return [rmin, rmax];
+ }
+
+ numSpaces = Math.ceil(rmax / spacing) - Math.floor(rmin / spacing);
+ if (numSpaces > maxNumSpaces) {
+ // If the calculated num of spaces exceeds maxNumSpaces, recalculate it
+ spacing = helpers$1.niceNum(numSpaces * spacing / maxNumSpaces / unit) * unit;
+ }
+
+ if (stepSize || isNullOrUndef$2(precision)) {
+ // If a precision is not specified, calculate factor based on spacing
+ factor = Math.pow(10, helpers$1._decimalPlaces(spacing));
+ } else {
+ // If the user specified a precision, round to that number of decimal places
+ factor = Math.pow(10, precision);
+ spacing = Math.ceil(spacing * factor) / factor;
+ }
+
+ niceMin = Math.floor(rmin / spacing) * spacing;
+ niceMax = Math.ceil(rmax / spacing) * spacing;
+
+ // If min, max and stepSize is set and they make an evenly spaced scale use it.
+ if (stepSize) {
+ // If very close to our whole number, use it.
+ if (!isNullOrUndef$2(min) && helpers$1.almostWhole(min / spacing, spacing / 1000)) {
+ niceMin = min;
+ }
+ if (!isNullOrUndef$2(max) && helpers$1.almostWhole(max / spacing, spacing / 1000)) {
+ niceMax = max;
+ }
+ }
+
+ numSpaces = (niceMax - niceMin) / spacing;
+ // If very close to our rounded value, use it.
+ if (helpers$1.almostEquals(numSpaces, Math.round(numSpaces), spacing / 1000)) {
+ numSpaces = Math.round(numSpaces);
+ } else {
+ numSpaces = Math.ceil(numSpaces);
+ }
+
+ niceMin = Math.round(niceMin * factor) / factor;
+ niceMax = Math.round(niceMax * factor) / factor;
+ ticks.push(isNullOrUndef$2(min) ? niceMin : min);
+ for (var j = 1; j < numSpaces; ++j) {
+ ticks.push(Math.round((niceMin + j * spacing) * factor) / factor);
+ }
+ ticks.push(isNullOrUndef$2(max) ? niceMax : max);
+
+ return ticks;
+}
+
+var scale_linearbase = core_scale.extend({
+ getRightValue: function(value) {
+ if (typeof value === 'string') {
+ return +value;
+ }
+ return core_scale.prototype.getRightValue.call(this, value);
+ },
+
+ handleTickRangeOptions: function() {
+ var me = this;
+ var opts = me.options;
+ var tickOpts = opts.ticks;
+
+ // If we are forcing it to begin at 0, but 0 will already be rendered on the chart,
+ // do nothing since that would make the chart weird. If the user really wants a weird chart
+ // axis, they can manually override it
+ if (tickOpts.beginAtZero) {
+ var minSign = helpers$1.sign(me.min);
+ var maxSign = helpers$1.sign(me.max);
+
+ if (minSign < 0 && maxSign < 0) {
+ // move the top up to 0
+ me.max = 0;
+ } else if (minSign > 0 && maxSign > 0) {
+ // move the bottom down to 0
+ me.min = 0;
+ }
+ }
+
+ var setMin = tickOpts.min !== undefined || tickOpts.suggestedMin !== undefined;
+ var setMax = tickOpts.max !== undefined || tickOpts.suggestedMax !== undefined;
+
+ if (tickOpts.min !== undefined) {
+ me.min = tickOpts.min;
+ } else if (tickOpts.suggestedMin !== undefined) {
+ if (me.min === null) {
+ me.min = tickOpts.suggestedMin;
+ } else {
+ me.min = Math.min(me.min, tickOpts.suggestedMin);
+ }
+ }
+
+ if (tickOpts.max !== undefined) {
+ me.max = tickOpts.max;
+ } else if (tickOpts.suggestedMax !== undefined) {
+ if (me.max === null) {
+ me.max = tickOpts.suggestedMax;
+ } else {
+ me.max = Math.max(me.max, tickOpts.suggestedMax);
+ }
+ }
+
+ if (setMin !== setMax) {
+ // We set the min or the max but not both.
+ // So ensure that our range is good
+ // Inverted or 0 length range can happen when
+ // ticks.min is set, and no datasets are visible
+ if (me.min >= me.max) {
+ if (setMin) {
+ me.max = me.min + 1;
+ } else {
+ me.min = me.max - 1;
+ }
+ }
+ }
+
+ if (me.min === me.max) {
+ me.max++;
+
+ if (!tickOpts.beginAtZero) {
+ me.min--;
+ }
+ }
+ },
+
+ getTickLimit: function() {
+ var me = this;
+ var tickOpts = me.options.ticks;
+ var stepSize = tickOpts.stepSize;
+ var maxTicksLimit = tickOpts.maxTicksLimit;
+ var maxTicks;
+
+ if (stepSize) {
+ maxTicks = Math.ceil(me.max / stepSize) - Math.floor(me.min / stepSize) + 1;
+ } else {
+ maxTicks = me._computeTickLimit();
+ maxTicksLimit = maxTicksLimit || 11;
+ }
+
+ if (maxTicksLimit) {
+ maxTicks = Math.min(maxTicksLimit, maxTicks);
+ }
+
+ return maxTicks;
+ },
+
+ _computeTickLimit: function() {
+ return Number.POSITIVE_INFINITY;
+ },
+
+ handleDirectionalChanges: noop,
+
+ buildTicks: function() {
+ var me = this;
+ var opts = me.options;
+ var tickOpts = opts.ticks;
+
+ // Figure out what the max number of ticks we can support it is based on the size of
+ // the axis area. For now, we say that the minimum tick spacing in pixels must be 40
+ // We also limit the maximum number of ticks to 11 which gives a nice 10 squares on
+ // the graph. Make sure we always have at least 2 ticks
+ var maxTicks = me.getTickLimit();
+ maxTicks = Math.max(2, maxTicks);
+
+ var numericGeneratorOptions = {
+ maxTicks: maxTicks,
+ min: tickOpts.min,
+ max: tickOpts.max,
+ precision: tickOpts.precision,
+ stepSize: helpers$1.valueOrDefault(tickOpts.fixedStepSize, tickOpts.stepSize)
+ };
+ var ticks = me.ticks = generateTicks(numericGeneratorOptions, me);
+
+ me.handleDirectionalChanges();
+
+ // At this point, we need to update our max and min given the tick values since we have expanded the
+ // range of the scale
+ me.max = helpers$1.max(ticks);
+ me.min = helpers$1.min(ticks);
+
+ if (tickOpts.reverse) {
+ ticks.reverse();
+
+ me.start = me.max;
+ me.end = me.min;
+ } else {
+ me.start = me.min;
+ me.end = me.max;
+ }
+ },
+
+ convertTicksToLabels: function() {
+ var me = this;
+ me.ticksAsNumbers = me.ticks.slice();
+ me.zeroLineIndex = me.ticks.indexOf(0);
+
+ core_scale.prototype.convertTicksToLabels.call(me);
+ },
+
+ _configure: function() {
+ var me = this;
+ var ticks = me.getTicks();
+ var start = me.min;
+ var end = me.max;
+ var offset;
+
+ core_scale.prototype._configure.call(me);
+
+ if (me.options.offset && ticks.length) {
+ offset = (end - start) / Math.max(ticks.length - 1, 1) / 2;
+ start -= offset;
+ end += offset;
+ }
+ me._startValue = start;
+ me._endValue = end;
+ me._valueRange = end - start;
+ }
+}); + +var defaultConfig$1 = {
+ position: 'left',
+ ticks: {
+ callback: core_ticks.formatters.linear
+ }
+};
+
+var DEFAULT_MIN = 0;
+var DEFAULT_MAX = 1;
+
+function getOrCreateStack(stacks, stacked, meta) {
+ var key = [
+ meta.type,
+ // we have a separate stack for stack=undefined datasets when the opts.stacked is undefined
+ stacked === undefined && meta.stack === undefined ? meta.index : '',
+ meta.stack
+ ].join('.');
+
+ if (stacks[key] === undefined) {
+ stacks[key] = {
+ pos: [],
+ neg: []
+ };
+ }
+
+ return stacks[key];
+}
+
+function stackData(scale, stacks, meta, data) {
+ var opts = scale.options;
+ var stacked = opts.stacked;
+ var stack = getOrCreateStack(stacks, stacked, meta);
+ var pos = stack.pos;
+ var neg = stack.neg;
+ var ilen = data.length;
+ var i, value;
+
+ for (i = 0; i < ilen; ++i) {
+ value = scale._parseValue(data[i]);
+ if (isNaN(value.min) || isNaN(value.max) || meta.data[i].hidden) {
+ continue;
+ }
+
+ pos[i] = pos[i] || 0;
+ neg[i] = neg[i] || 0;
+
+ if (opts.relativePoints) {
+ pos[i] = 100;
+ } else if (value.min < 0 || value.max < 0) {
+ neg[i] += value.min;
+ } else {
+ pos[i] += value.max;
+ }
+ }
+}
+
+function updateMinMax(scale, meta, data) {
+ var ilen = data.length;
+ var i, value;
+
+ for (i = 0; i < ilen; ++i) {
+ value = scale._parseValue(data[i]);
+ if (isNaN(value.min) || isNaN(value.max) || meta.data[i].hidden) {
+ continue;
+ }
+
+ scale.min = Math.min(scale.min, value.min);
+ scale.max = Math.max(scale.max, value.max);
+ }
+}
+
+var scale_linear = scale_linearbase.extend({
+ determineDataLimits: function() {
+ var me = this;
+ var opts = me.options;
+ var chart = me.chart;
+ var datasets = chart.data.datasets;
+ var metasets = me._getMatchingVisibleMetas();
+ var hasStacks = opts.stacked;
+ var stacks = {};
+ var ilen = metasets.length;
+ var i, meta, data, values;
+
+ me.min = Number.POSITIVE_INFINITY;
+ me.max = Number.NEGATIVE_INFINITY;
+
+ if (hasStacks === undefined) {
+ for (i = 0; !hasStacks && i < ilen; ++i) {
+ meta = metasets[i];
+ hasStacks = meta.stack !== undefined;
+ }
+ }
+
+ for (i = 0; i < ilen; ++i) {
+ meta = metasets[i];
+ data = datasets[meta.index].data;
+ if (hasStacks) {
+ stackData(me, stacks, meta, data);
+ } else {
+ updateMinMax(me, meta, data);
+ }
+ }
+
+ helpers$1.each(stacks, function(stackValues) {
+ values = stackValues.pos.concat(stackValues.neg);
+ me.min = Math.min(me.min, helpers$1.min(values));
+ me.max = Math.max(me.max, helpers$1.max(values));
+ });
+
+ me.min = helpers$1.isFinite(me.min) && !isNaN(me.min) ? me.min : DEFAULT_MIN;
+ me.max = helpers$1.isFinite(me.max) && !isNaN(me.max) ? me.max : DEFAULT_MAX;
+
+ // Common base implementation to handle ticks.min, ticks.max, ticks.beginAtZero
+ me.handleTickRangeOptions();
+ },
+
+ // Returns the maximum number of ticks based on the scale dimension
+ _computeTickLimit: function() {
+ var me = this;
+ var tickFont;
+
+ if (me.isHorizontal()) {
+ return Math.ceil(me.width / 40);
+ }
+ tickFont = helpers$1.options._parseFont(me.options.ticks);
+ return Math.ceil(me.height / tickFont.lineHeight);
+ },
+
+ // Called after the ticks are built. We need
+ handleDirectionalChanges: function() {
+ if (!this.isHorizontal()) {
+ // We are in a vertical orientation. The top value is the highest. So reverse the array
+ this.ticks.reverse();
+ }
+ },
+
+ getLabelForIndex: function(index, datasetIndex) {
+ return this._getScaleLabel(this.chart.data.datasets[datasetIndex].data[index]);
+ },
+
+ // Utils
+ getPixelForValue: function(value) {
+ var me = this;
+ return me.getPixelForDecimal((+me.getRightValue(value) - me._startValue) / me._valueRange);
+ },
+
+ getValueForPixel: function(pixel) {
+ return this._startValue + this.getDecimalForPixel(pixel) * this._valueRange;
+ },
+
+ getPixelForTick: function(index) {
+ var ticks = this.ticksAsNumbers;
+ if (index < 0 || index > ticks.length - 1) {
+ return null;
+ }
+ return this.getPixelForValue(ticks[index]);
+ }
+});
+
+// INTERNAL: static default options, registered in src/index.js
+var _defaults$1 = defaultConfig$1; +scale_linear._defaults = _defaults$1; + +var valueOrDefault$b = helpers$1.valueOrDefault;
+var log10 = helpers$1.math.log10;
+
+/**
+ * Generate a set of logarithmic ticks
+ * @param generationOptions the options used to generate the ticks
+ * @param dataRange the range of the data
+ * @returns {number[]} array of tick values
+ */
+function generateTicks$1(generationOptions, dataRange) {
+ var ticks = [];
+
+ var tickVal = valueOrDefault$b(generationOptions.min, Math.pow(10, Math.floor(log10(dataRange.min))));
+
+ var endExp = Math.floor(log10(dataRange.max));
+ var endSignificand = Math.ceil(dataRange.max / Math.pow(10, endExp));
+ var exp, significand;
+
+ if (tickVal === 0) {
+ exp = Math.floor(log10(dataRange.minNotZero));
+ significand = Math.floor(dataRange.minNotZero / Math.pow(10, exp));
+
+ ticks.push(tickVal);
+ tickVal = significand * Math.pow(10, exp);
+ } else {
+ exp = Math.floor(log10(tickVal));
+ significand = Math.floor(tickVal / Math.pow(10, exp));
+ }
+ var precision = exp < 0 ? Math.pow(10, Math.abs(exp)) : 1;
+
+ do {
+ ticks.push(tickVal);
+
+ ++significand;
+ if (significand === 10) {
+ significand = 1;
+ ++exp;
+ precision = exp >= 0 ? 1 : precision;
+ }
+
+ tickVal = Math.round(significand * Math.pow(10, exp) * precision) / precision;
+ } while (exp < endExp || (exp === endExp && significand < endSignificand));
+
+ var lastTick = valueOrDefault$b(generationOptions.max, tickVal);
+ ticks.push(lastTick);
+
+ return ticks;
+}
+
+var defaultConfig$2 = {
+ position: 'left',
+
+ // label settings
+ ticks: {
+ callback: core_ticks.formatters.logarithmic
+ }
+};
+
+// TODO(v3): change this to positiveOrDefault
+function nonNegativeOrDefault(value, defaultValue) {
+ return helpers$1.isFinite(value) && value >= 0 ? value : defaultValue;
+}
+
+var scale_logarithmic = core_scale.extend({
+ determineDataLimits: function() {
+ var me = this;
+ var opts = me.options;
+ var chart = me.chart;
+ var datasets = chart.data.datasets;
+ var isHorizontal = me.isHorizontal();
+ function IDMatches(meta) {
+ return isHorizontal ? meta.xAxisID === me.id : meta.yAxisID === me.id;
+ }
+ var datasetIndex, meta, value, data, i, ilen;
+
+ // Calculate Range
+ me.min = Number.POSITIVE_INFINITY;
+ me.max = Number.NEGATIVE_INFINITY;
+ me.minNotZero = Number.POSITIVE_INFINITY;
+
+ var hasStacks = opts.stacked;
+ if (hasStacks === undefined) {
+ for (datasetIndex = 0; datasetIndex < datasets.length; datasetIndex++) {
+ meta = chart.getDatasetMeta(datasetIndex);
+ if (chart.isDatasetVisible(datasetIndex) && IDMatches(meta) &&
+ meta.stack !== undefined) {
+ hasStacks = true;
+ break;
+ }
+ }
+ }
+
+ if (opts.stacked || hasStacks) {
+ var valuesPerStack = {};
+
+ for (datasetIndex = 0; datasetIndex < datasets.length; datasetIndex++) {
+ meta = chart.getDatasetMeta(datasetIndex);
+ var key = [
+ meta.type,
+ // we have a separate stack for stack=undefined datasets when the opts.stacked is undefined
+ ((opts.stacked === undefined && meta.stack === undefined) ? datasetIndex : ''),
+ meta.stack
+ ].join('.');
+
+ if (chart.isDatasetVisible(datasetIndex) && IDMatches(meta)) {
+ if (valuesPerStack[key] === undefined) {
+ valuesPerStack[key] = [];
+ }
+
+ data = datasets[datasetIndex].data;
+ for (i = 0, ilen = data.length; i < ilen; i++) {
+ var values = valuesPerStack[key];
+ value = me._parseValue(data[i]);
+ // invalid, hidden and negative values are ignored
+ if (isNaN(value.min) || isNaN(value.max) || meta.data[i].hidden || value.min < 0 || value.max < 0) {
+ continue;
+ }
+ values[i] = values[i] || 0;
+ values[i] += value.max;
+ }
+ }
+ }
+
+ helpers$1.each(valuesPerStack, function(valuesForType) {
+ if (valuesForType.length > 0) {
+ var minVal = helpers$1.min(valuesForType);
+ var maxVal = helpers$1.max(valuesForType);
+ me.min = Math.min(me.min, minVal);
+ me.max = Math.max(me.max, maxVal);
+ }
+ });
+
+ } else {
+ for (datasetIndex = 0; datasetIndex < datasets.length; datasetIndex++) {
+ meta = chart.getDatasetMeta(datasetIndex);
+ if (chart.isDatasetVisible(datasetIndex) && IDMatches(meta)) {
+ data = datasets[datasetIndex].data;
+ for (i = 0, ilen = data.length; i < ilen; i++) {
+ value = me._parseValue(data[i]);
+ // invalid, hidden and negative values are ignored
+ if (isNaN(value.min) || isNaN(value.max) || meta.data[i].hidden || value.min < 0 || value.max < 0) {
+ continue;
+ }
+
+ me.min = Math.min(value.min, me.min);
+ me.max = Math.max(value.max, me.max);
+
+ if (value.min !== 0) {
+ me.minNotZero = Math.min(value.min, me.minNotZero);
+ }
+ }
+ }
+ }
+ }
+
+ me.min = helpers$1.isFinite(me.min) ? me.min : null;
+ me.max = helpers$1.isFinite(me.max) ? me.max : null;
+ me.minNotZero = helpers$1.isFinite(me.minNotZero) ? me.minNotZero : null;
+
+ // Common base implementation to handle ticks.min, ticks.max
+ this.handleTickRangeOptions();
+ },
+
+ handleTickRangeOptions: function() {
+ var me = this;
+ var tickOpts = me.options.ticks;
+ var DEFAULT_MIN = 1;
+ var DEFAULT_MAX = 10;
+
+ me.min = nonNegativeOrDefault(tickOpts.min, me.min);
+ me.max = nonNegativeOrDefault(tickOpts.max, me.max);
+
+ if (me.min === me.max) {
+ if (me.min !== 0 && me.min !== null) {
+ me.min = Math.pow(10, Math.floor(log10(me.min)) - 1);
+ me.max = Math.pow(10, Math.floor(log10(me.max)) + 1);
+ } else {
+ me.min = DEFAULT_MIN;
+ me.max = DEFAULT_MAX;
+ }
+ }
+ if (me.min === null) {
+ me.min = Math.pow(10, Math.floor(log10(me.max)) - 1);
+ }
+ if (me.max === null) {
+ me.max = me.min !== 0
+ ? Math.pow(10, Math.floor(log10(me.min)) + 1)
+ : DEFAULT_MAX;
+ }
+ if (me.minNotZero === null) {
+ if (me.min > 0) {
+ me.minNotZero = me.min;
+ } else if (me.max < 1) {
+ me.minNotZero = Math.pow(10, Math.floor(log10(me.max)));
+ } else {
+ me.minNotZero = DEFAULT_MIN;
+ }
+ }
+ },
+
+ buildTicks: function() {
+ var me = this;
+ var tickOpts = me.options.ticks;
+ var reverse = !me.isHorizontal();
+
+ var generationOptions = {
+ min: nonNegativeOrDefault(tickOpts.min),
+ max: nonNegativeOrDefault(tickOpts.max)
+ };
+ var ticks = me.ticks = generateTicks$1(generationOptions, me);
+
+ // At this point, we need to update our max and min given the tick values since we have expanded the
+ // range of the scale
+ me.max = helpers$1.max(ticks);
+ me.min = helpers$1.min(ticks);
+
+ if (tickOpts.reverse) {
+ reverse = !reverse;
+ me.start = me.max;
+ me.end = me.min;
+ } else {
+ me.start = me.min;
+ me.end = me.max;
+ }
+ if (reverse) {
+ ticks.reverse();
+ }
+ },
+
+ convertTicksToLabels: function() {
+ this.tickValues = this.ticks.slice();
+
+ core_scale.prototype.convertTicksToLabels.call(this);
+ },
+
+ // Get the correct tooltip label
+ getLabelForIndex: function(index, datasetIndex) {
+ return this._getScaleLabel(this.chart.data.datasets[datasetIndex].data[index]);
+ },
+
+ getPixelForTick: function(index) {
+ var ticks = this.tickValues;
+ if (index < 0 || index > ticks.length - 1) {
+ return null;
+ }
+ return this.getPixelForValue(ticks[index]);
+ },
+
+ /**
+ * Returns the value of the first tick.
+ * @param {number} value - The minimum not zero value.
+ * @return {number} The first tick value.
+ * @private
+ */
+ _getFirstTickValue: function(value) {
+ var exp = Math.floor(log10(value));
+ var significand = Math.floor(value / Math.pow(10, exp));
+
+ return significand * Math.pow(10, exp);
+ },
+
+ _configure: function() {
+ var me = this;
+ var start = me.min;
+ var offset = 0;
+
+ core_scale.prototype._configure.call(me);
+
+ if (start === 0) {
+ start = me._getFirstTickValue(me.minNotZero);
+ offset = valueOrDefault$b(me.options.ticks.fontSize, core_defaults.global.defaultFontSize) / me._length;
+ }
+
+ me._startValue = log10(start);
+ me._valueOffset = offset;
+ me._valueRange = (log10(me.max) - log10(start)) / (1 - offset);
+ },
+
+ getPixelForValue: function(value) {
+ var me = this;
+ var decimal = 0;
+
+ value = +me.getRightValue(value);
+
+ if (value > me.min && value > 0) {
+ decimal = (log10(value) - me._startValue) / me._valueRange + me._valueOffset;
+ }
+ return me.getPixelForDecimal(decimal);
+ },
+
+ getValueForPixel: function(pixel) {
+ var me = this;
+ var decimal = me.getDecimalForPixel(pixel);
+ return decimal === 0 && me.min === 0
+ ? 0
+ : Math.pow(10, me._startValue + (decimal - me._valueOffset) * me._valueRange);
+ }
+});
+
+// INTERNAL: static default options, registered in src/index.js
+var _defaults$2 = defaultConfig$2; +scale_logarithmic._defaults = _defaults$2; + +var valueOrDefault$c = helpers$1.valueOrDefault;
+var valueAtIndexOrDefault$1 = helpers$1.valueAtIndexOrDefault;
+var resolve$4 = helpers$1.options.resolve;
+
+var defaultConfig$3 = {
+ display: true,
+
+ // Boolean - Whether to animate scaling the chart from the centre
+ animate: true,
+ position: 'chartArea',
+
+ angleLines: {
+ display: true,
+ color: 'rgba(0,0,0,0.1)',
+ lineWidth: 1,
+ borderDash: [],
+ borderDashOffset: 0.0
+ },
+
+ gridLines: {
+ circular: false
+ },
+
+ // label settings
+ ticks: {
+ // Boolean - Show a backdrop to the scale label
+ showLabelBackdrop: true,
+
+ // String - The colour of the label backdrop
+ backdropColor: 'rgba(255,255,255,0.75)',
+
+ // Number - The backdrop padding above & below the label in pixels
+ backdropPaddingY: 2,
+
+ // Number - The backdrop padding to the side of the label in pixels
+ backdropPaddingX: 2,
+
+ callback: core_ticks.formatters.linear
+ },
+
+ pointLabels: {
+ // Boolean - if true, show point labels
+ display: true,
+
+ // Number - Point label font size in pixels
+ fontSize: 10,
+
+ // Function - Used to convert point labels
+ callback: function(label) {
+ return label;
+ }
+ }
+};
+
+function getTickBackdropHeight(opts) {
+ var tickOpts = opts.ticks;
+
+ if (tickOpts.display && opts.display) {
+ return valueOrDefault$c(tickOpts.fontSize, core_defaults.global.defaultFontSize) + tickOpts.backdropPaddingY * 2;
+ }
+ return 0;
+}
+
+function measureLabelSize(ctx, lineHeight, label) {
+ if (helpers$1.isArray(label)) {
+ return {
+ w: helpers$1.longestText(ctx, ctx.font, label),
+ h: label.length * lineHeight
+ };
+ }
+
+ return {
+ w: ctx.measureText(label).width,
+ h: lineHeight
+ };
+}
+
+function determineLimits(angle, pos, size, min, max) {
+ if (angle === min || angle === max) {
+ return {
+ start: pos - (size / 2),
+ end: pos + (size / 2)
+ };
+ } else if (angle < min || angle > max) {
+ return {
+ start: pos - size,
+ end: pos
+ };
+ }
+
+ return {
+ start: pos,
+ end: pos + size
+ };
+}
+
+/**
+ * Helper function to fit a radial linear scale with point labels
+ */
+function fitWithPointLabels(scale) {
+
+ // Right, this is really confusing and there is a lot of maths going on here
+ // The gist of the problem is here: https://gist.github.com/nnnick/696cc9c55f4b0beb8fe9
+ //
+ // Reaction: https://dl.dropboxusercontent.com/u/34601363/toomuchscience.gif
+ //
+ // Solution:
+ //
+ // We assume the radius of the polygon is half the size of the canvas at first
+ // at each index we check if the text overlaps.
+ //
+ // Where it does, we store that angle and that index.
+ //
+ // After finding the largest index and angle we calculate how much we need to remove
+ // from the shape radius to move the point inwards by that x.
+ //
+ // We average the left and right distances to get the maximum shape radius that can fit in the box
+ // along with labels.
+ //
+ // Once we have that, we can find the centre point for the chart, by taking the x text protrusion
+ // on each side, removing that from the size, halving it and adding the left x protrusion width.
+ //
+ // This will mean we have a shape fitted to the canvas, as large as it can be with the labels
+ // and position it in the most space efficient manner
+ //
+ // https://dl.dropboxusercontent.com/u/34601363/yeahscience.gif
+
+ var plFont = helpers$1.options._parseFont(scale.options.pointLabels);
+
+ // 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 furthestLimits = {
+ l: 0,
+ r: scale.width,
+ t: 0,
+ b: scale.height - scale.paddingTop
+ };
+ var furthestAngles = {};
+ var i, textSize, pointPosition;
+
+ scale.ctx.font = plFont.string;
+ scale._pointLabelSizes = [];
+
+ var valueCount = scale.chart.data.labels.length;
+ for (i = 0; i < valueCount; i++) {
+ pointPosition = scale.getPointPosition(i, scale.drawingArea + 5);
+ textSize = measureLabelSize(scale.ctx, plFont.lineHeight, scale.pointLabels[i]);
+ scale._pointLabelSizes[i] = textSize;
+
+ // Add quarter circle to make degree 0 mean top of circle
+ var angleRadians = scale.getIndexAngle(i);
+ var angle = helpers$1.toDegrees(angleRadians) % 360;
+ var hLimits = determineLimits(angle, pointPosition.x, textSize.w, 0, 180);
+ var vLimits = determineLimits(angle, pointPosition.y, textSize.h, 90, 270);
+
+ if (hLimits.start < furthestLimits.l) {
+ furthestLimits.l = hLimits.start;
+ furthestAngles.l = angleRadians;
+ }
+
+ if (hLimits.end > furthestLimits.r) {
+ furthestLimits.r = hLimits.end;
+ furthestAngles.r = angleRadians;
+ }
+
+ if (vLimits.start < furthestLimits.t) {
+ furthestLimits.t = vLimits.start;
+ furthestAngles.t = angleRadians;
+ }
+
+ if (vLimits.end > furthestLimits.b) {
+ furthestLimits.b = vLimits.end;
+ furthestAngles.b = angleRadians;
+ }
+ }
+
+ scale.setReductions(scale.drawingArea, furthestLimits, furthestAngles);
+}
+
+function getTextAlignForAngle(angle) {
+ if (angle === 0 || angle === 180) {
+ return 'center';
+ } else if (angle < 180) {
+ return 'left';
+ }
+
+ return 'right';
+}
+
+function fillText(ctx, text, position, lineHeight) {
+ var y = position.y + lineHeight / 2;
+ var i, ilen;
+
+ if (helpers$1.isArray(text)) {
+ for (i = 0, ilen = text.length; i < ilen; ++i) {
+ ctx.fillText(text[i], position.x, y);
+ y += lineHeight;
+ }
+ } else {
+ ctx.fillText(text, position.x, y);
+ }
+}
+
+function adjustPointPositionForLabelHeight(angle, textSize, position) {
+ if (angle === 90 || angle === 270) {
+ position.y -= (textSize.h / 2);
+ } else if (angle > 270 || angle < 90) {
+ position.y -= textSize.h;
+ }
+}
+
+function drawPointLabels(scale) {
+ var ctx = scale.ctx;
+ var opts = scale.options;
+ var pointLabelOpts = opts.pointLabels;
+ var tickBackdropHeight = getTickBackdropHeight(opts);
+ var outerDistance = scale.getDistanceFromCenterForValue(opts.ticks.reverse ? scale.min : scale.max);
+ var plFont = helpers$1.options._parseFont(pointLabelOpts);
+
+ ctx.save();
+
+ ctx.font = plFont.string;
+ ctx.textBaseline = 'middle';
+
+ for (var i = scale.chart.data.labels.length - 1; i >= 0; i--) {
+ // Extra pixels out for some label spacing
+ var extra = (i === 0 ? tickBackdropHeight / 2 : 0);
+ var pointLabelPosition = scale.getPointPosition(i, outerDistance + extra + 5);
+
+ // Keep this in loop since we may support array properties here
+ var pointLabelFontColor = valueAtIndexOrDefault$1(pointLabelOpts.fontColor, i, core_defaults.global.defaultFontColor);
+ ctx.fillStyle = pointLabelFontColor;
+
+ var angleRadians = scale.getIndexAngle(i);
+ var angle = helpers$1.toDegrees(angleRadians);
+ ctx.textAlign = getTextAlignForAngle(angle);
+ adjustPointPositionForLabelHeight(angle, scale._pointLabelSizes[i], pointLabelPosition);
+ fillText(ctx, scale.pointLabels[i], pointLabelPosition, plFont.lineHeight);
+ }
+ ctx.restore();
+}
+
+function drawRadiusLine(scale, gridLineOpts, radius, index) {
+ var ctx = scale.ctx;
+ var circular = gridLineOpts.circular;
+ var valueCount = scale.chart.data.labels.length;
+ var lineColor = valueAtIndexOrDefault$1(gridLineOpts.color, index - 1);
+ var lineWidth = valueAtIndexOrDefault$1(gridLineOpts.lineWidth, index - 1);
+ var pointPosition;
+
+ if ((!circular && !valueCount) || !lineColor || !lineWidth) {
+ return;
+ }
+
+ ctx.save();
+ ctx.strokeStyle = lineColor;
+ ctx.lineWidth = lineWidth;
+ if (ctx.setLineDash) {
+ ctx.setLineDash(gridLineOpts.borderDash || []);
+ ctx.lineDashOffset = gridLineOpts.borderDashOffset || 0.0;
+ }
+
+ ctx.beginPath();
+ if (circular) {
+ // Draw circular arcs between the points
+ ctx.arc(scale.xCenter, scale.yCenter, radius, 0, Math.PI * 2);
+ } else {
+ // Draw straight lines connecting each index
+ pointPosition = scale.getPointPosition(0, radius);
+ ctx.moveTo(pointPosition.x, pointPosition.y);
+
+ for (var i = 1; i < valueCount; i++) {
+ pointPosition = scale.getPointPosition(i, radius);
+ ctx.lineTo(pointPosition.x, pointPosition.y);
+ }
+ }
+ ctx.closePath();
+ ctx.stroke();
+ ctx.restore();
+}
+
+function numberOrZero(param) {
+ return helpers$1.isNumber(param) ? param : 0;
+}
+
+var scale_radialLinear = scale_linearbase.extend({
+ setDimensions: function() {
+ var me = this;
+
+ // Set the unconstrained dimension before label rotation
+ me.width = me.maxWidth;
+ me.height = me.maxHeight;
+ me.paddingTop = getTickBackdropHeight(me.options) / 2;
+ me.xCenter = Math.floor(me.width / 2);
+ me.yCenter = Math.floor((me.height - me.paddingTop) / 2);
+ me.drawingArea = Math.min(me.height - me.paddingTop, me.width) / 2;
+ },
+
+ determineDataLimits: function() {
+ var me = this;
+ var chart = me.chart;
+ var min = Number.POSITIVE_INFINITY;
+ var max = Number.NEGATIVE_INFINITY;
+
+ helpers$1.each(chart.data.datasets, function(dataset, datasetIndex) {
+ if (chart.isDatasetVisible(datasetIndex)) {
+ var meta = chart.getDatasetMeta(datasetIndex);
+
+ helpers$1.each(dataset.data, function(rawValue, index) {
+ var value = +me.getRightValue(rawValue);
+ if (isNaN(value) || meta.data[index].hidden) {
+ return;
+ }
+
+ min = Math.min(value, min);
+ max = Math.max(value, max);
+ });
+ }
+ });
+
+ me.min = (min === Number.POSITIVE_INFINITY ? 0 : min);
+ me.max = (max === Number.NEGATIVE_INFINITY ? 0 : max);
+
+ // Common base implementation to handle ticks.min, ticks.max, ticks.beginAtZero
+ me.handleTickRangeOptions();
+ },
+
+ // Returns the maximum number of ticks based on the scale dimension
+ _computeTickLimit: function() {
+ return Math.ceil(this.drawingArea / getTickBackdropHeight(this.options));
+ },
+
+ convertTicksToLabels: function() {
+ var me = this;
+
+ scale_linearbase.prototype.convertTicksToLabels.call(me);
+
+ // Point labels
+ me.pointLabels = me.chart.data.labels.map(function() {
+ var label = helpers$1.callback(me.options.pointLabels.callback, arguments, me);
+ return label || label === 0 ? label : '';
+ });
+ },
+
+ getLabelForIndex: function(index, datasetIndex) {
+ return +this.getRightValue(this.chart.data.datasets[datasetIndex].data[index]);
+ },
+
+ fit: function() {
+ var me = this;
+ var opts = me.options;
+
+ if (opts.display && opts.pointLabels.display) {
+ fitWithPointLabels(me);
+ } else {
+ me.setCenterPoint(0, 0, 0, 0);
+ }
+ },
+
+ /**
+ * Set radius reductions and determine new radius and center point
+ * @private
+ */
+ setReductions: function(largestPossibleRadius, furthestLimits, furthestAngles) {
+ var me = this;
+ var radiusReductionLeft = furthestLimits.l / Math.sin(furthestAngles.l);
+ var radiusReductionRight = Math.max(furthestLimits.r - me.width, 0) / Math.sin(furthestAngles.r);
+ var radiusReductionTop = -furthestLimits.t / Math.cos(furthestAngles.t);
+ var radiusReductionBottom = -Math.max(furthestLimits.b - (me.height - me.paddingTop), 0) / Math.cos(furthestAngles.b);
+
+ radiusReductionLeft = numberOrZero(radiusReductionLeft);
+ radiusReductionRight = numberOrZero(radiusReductionRight);
+ radiusReductionTop = numberOrZero(radiusReductionTop);
+ radiusReductionBottom = numberOrZero(radiusReductionBottom);
+
+ me.drawingArea = Math.min(
+ Math.floor(largestPossibleRadius - (radiusReductionLeft + radiusReductionRight) / 2),
+ Math.floor(largestPossibleRadius - (radiusReductionTop + radiusReductionBottom) / 2));
+ me.setCenterPoint(radiusReductionLeft, radiusReductionRight, radiusReductionTop, radiusReductionBottom);
+ },
+
+ setCenterPoint: function(leftMovement, rightMovement, topMovement, bottomMovement) {
+ var me = this;
+ var maxRight = me.width - rightMovement - me.drawingArea;
+ var maxLeft = leftMovement + me.drawingArea;
+ var maxTop = topMovement + me.drawingArea;
+ var maxBottom = (me.height - me.paddingTop) - bottomMovement - me.drawingArea;
+
+ me.xCenter = Math.floor(((maxLeft + maxRight) / 2) + me.left);
+ me.yCenter = Math.floor(((maxTop + maxBottom) / 2) + me.top + me.paddingTop);
+ },
+
+ getIndexAngle: function(index) {
+ var chart = this.chart;
+ var angleMultiplier = 360 / chart.data.labels.length;
+ var options = chart.options || {};
+ var startAngle = options.startAngle || 0;
+
+ // Start from the top instead of right, so remove a quarter of the circle
+ var angle = (index * angleMultiplier + startAngle) % 360;
+
+ return (angle < 0 ? angle + 360 : angle) * Math.PI * 2 / 360;
+ },
+
+ getDistanceFromCenterForValue: function(value) {
+ var me = this;
+
+ if (helpers$1.isNullOrUndef(value)) {
+ return NaN;
+ }
+
+ // Take into account half font size + the yPadding of the top value
+ var scalingFactor = me.drawingArea / (me.max - me.min);
+ if (me.options.ticks.reverse) {
+ return (me.max - value) * scalingFactor;
+ }
+ return (value - me.min) * scalingFactor;
+ },
+
+ getPointPosition: function(index, distanceFromCenter) {
+ var me = this;
+ var thisAngle = me.getIndexAngle(index) - (Math.PI / 2);
+ return {
+ x: Math.cos(thisAngle) * distanceFromCenter + me.xCenter,
+ y: Math.sin(thisAngle) * distanceFromCenter + me.yCenter
+ };
+ },
+
+ getPointPositionForValue: function(index, value) {
+ return this.getPointPosition(index, this.getDistanceFromCenterForValue(value));
+ },
+
+ getBasePosition: function(index) {
+ var me = this;
+ var min = me.min;
+ var max = me.max;
+
+ return me.getPointPositionForValue(index || 0,
+ me.beginAtZero ? 0 :
+ min < 0 && max < 0 ? max :
+ min > 0 && max > 0 ? min :
+ 0);
+ },
+
+ /**
+ * @private
+ */
+ _drawGrid: function() {
+ var me = this;
+ var ctx = me.ctx;
+ var opts = me.options;
+ var gridLineOpts = opts.gridLines;
+ var angleLineOpts = opts.angleLines;
+ var lineWidth = valueOrDefault$c(angleLineOpts.lineWidth, gridLineOpts.lineWidth);
+ var lineColor = valueOrDefault$c(angleLineOpts.color, gridLineOpts.color);
+ var i, offset, position;
+
+ if (opts.pointLabels.display) {
+ drawPointLabels(me);
+ }
+
+ if (gridLineOpts.display) {
+ helpers$1.each(me.ticks, function(label, index) {
+ if (index !== 0) {
+ offset = me.getDistanceFromCenterForValue(me.ticksAsNumbers[index]);
+ drawRadiusLine(me, gridLineOpts, offset, index);
+ }
+ });
+ }
+
+ if (angleLineOpts.display && lineWidth && lineColor) {
+ ctx.save();
+ ctx.lineWidth = lineWidth;
+ ctx.strokeStyle = lineColor;
+ if (ctx.setLineDash) {
+ ctx.setLineDash(resolve$4([angleLineOpts.borderDash, gridLineOpts.borderDash, []]));
+ ctx.lineDashOffset = resolve$4([angleLineOpts.borderDashOffset, gridLineOpts.borderDashOffset, 0.0]);
+ }
+
+ for (i = me.chart.data.labels.length - 1; i >= 0; i--) {
+ offset = me.getDistanceFromCenterForValue(opts.ticks.reverse ? me.min : me.max);
+ position = me.getPointPosition(i, offset);
+ ctx.beginPath();
+ ctx.moveTo(me.xCenter, me.yCenter);
+ ctx.lineTo(position.x, position.y);
+ ctx.stroke();
+ }
+
+ ctx.restore();
+ }
+ },
+
+ /**
+ * @private
+ */
+ _drawLabels: function() {
+ var me = this;
+ var ctx = me.ctx;
+ var opts = me.options;
+ var tickOpts = opts.ticks;
+
+ if (!tickOpts.display) {
+ return;
+ }
+
+ var startAngle = me.getIndexAngle(0);
+ var tickFont = helpers$1.options._parseFont(tickOpts);
+ var tickFontColor = valueOrDefault$c(tickOpts.fontColor, core_defaults.global.defaultFontColor);
+ var offset, width;
+
+ ctx.save();
+ ctx.font = tickFont.string;
+ ctx.translate(me.xCenter, me.yCenter);
+ ctx.rotate(startAngle);
+ ctx.textAlign = 'center';
+ ctx.textBaseline = 'middle';
+
+ helpers$1.each(me.ticks, function(label, index) {
+ if (index === 0 && !tickOpts.reverse) {
+ return;
+ }
+
+ offset = me.getDistanceFromCenterForValue(me.ticksAsNumbers[index]);
+
+ if (tickOpts.showLabelBackdrop) {
+ width = ctx.measureText(label).width;
+ ctx.fillStyle = tickOpts.backdropColor;
+
+ ctx.fillRect(
+ -width / 2 - tickOpts.backdropPaddingX,
+ -offset - tickFont.size / 2 - tickOpts.backdropPaddingY,
+ width + tickOpts.backdropPaddingX * 2,
+ tickFont.size + tickOpts.backdropPaddingY * 2
+ );
+ }
+
+ ctx.fillStyle = tickFontColor;
+ ctx.fillText(label, 0, -offset);
+ });
+
+ ctx.restore();
+ },
+
+ /**
+ * @private
+ */
+ _drawTitle: helpers$1.noop
+});
+
+// INTERNAL: static default options, registered in src/index.js
+var _defaults$3 = defaultConfig$3; +scale_radialLinear._defaults = _defaults$3; + +var deprecated$1 = helpers$1._deprecated;
+var resolve$5 = helpers$1.options.resolve;
+var valueOrDefault$d = helpers$1.valueOrDefault;
+
+// Integer constants are from the ES6 spec.
+var MIN_INTEGER = Number.MIN_SAFE_INTEGER || -9007199254740991;
+var MAX_INTEGER = Number.MAX_SAFE_INTEGER || 9007199254740991;
+
+var INTERVALS = {
+ millisecond: {
+ common: true,
+ size: 1,
+ steps: 1000
+ },
+ second: {
+ common: true,
+ size: 1000,
+ steps: 60
+ },
+ minute: {
+ common: true,
+ size: 60000,
+ steps: 60
+ },
+ hour: {
+ common: true,
+ size: 3600000,
+ steps: 24
+ },
+ day: {
+ common: true,
+ size: 86400000,
+ steps: 30
+ },
+ week: {
+ common: false,
+ size: 604800000,
+ steps: 4
+ },
+ month: {
+ common: true,
+ size: 2.628e9,
+ steps: 12
+ },
+ quarter: {
+ common: false,
+ size: 7.884e9,
+ steps: 4
+ },
+ year: {
+ common: true,
+ size: 3.154e10
+ }
+};
+
+var UNITS = Object.keys(INTERVALS);
+
+function sorter(a, b) {
+ return a - b;
+}
+
+function arrayUnique(items) {
+ var hash = {};
+ var out = [];
+ var i, ilen, item;
+
+ for (i = 0, ilen = items.length; i < ilen; ++i) {
+ item = items[i];
+ if (!hash[item]) {
+ hash[item] = true;
+ out.push(item);
+ }
+ }
+
+ return out;
+}
+
+function getMin(options) {
+ return helpers$1.valueOrDefault(options.time.min, options.ticks.min);
+}
+
+function getMax(options) {
+ return helpers$1.valueOrDefault(options.time.max, options.ticks.max);
+}
+
+/**
+ * Returns an array of {time, pos} objects used to interpolate a specific `time` or position
+ * (`pos`) on the scale, by searching entries before and after the requested value. `pos` is
+ * a decimal between 0 and 1: 0 being the start of the scale (left or top) and 1 the other
+ * extremity (left + width or top + height). Note that it would be more optimized to directly
+ * store pre-computed pixels, but the scale dimensions are not guaranteed at the time we need
+ * to create the lookup table. The table ALWAYS contains at least two items: min and max.
+ *
+ * @param {number[]} timestamps - timestamps sorted from lowest to highest.
+ * @param {string} distribution - If 'linear', timestamps will be spread linearly along the min
+ * and max range, so basically, the table will contains only two items: {min, 0} and {max, 1}.
+ * If 'series', timestamps will be positioned at the same distance from each other. In this
+ * case, only timestamps that break the time linearity are registered, meaning that in the
+ * best case, all timestamps are linear, the table contains only min and max.
+ */
+function buildLookupTable(timestamps, min, max, distribution) {
+ if (distribution === 'linear' || !timestamps.length) {
+ return [
+ {time: min, pos: 0},
+ {time: max, pos: 1}
+ ];
+ }
+
+ var table = [];
+ var items = [min];
+ var i, ilen, prev, curr, next;
+
+ for (i = 0, ilen = timestamps.length; i < ilen; ++i) {
+ curr = timestamps[i];
+ if (curr > min && curr < max) {
+ items.push(curr);
+ }
+ }
+
+ items.push(max);
+
+ for (i = 0, ilen = items.length; i < ilen; ++i) {
+ next = items[i + 1];
+ prev = items[i - 1];
+ curr = items[i];
+
+ // only add points that breaks the scale linearity
+ if (prev === undefined || next === undefined || Math.round((next + prev) / 2) !== curr) {
+ table.push({time: curr, pos: i / (ilen - 1)});
+ }
+ }
+
+ return table;
+}
+
+// @see adapted from https://www.anujgakhar.com/2014/03/01/binary-search-in-javascript/
+function lookup(table, key, value) {
+ var lo = 0;
+ var hi = table.length - 1;
+ var mid, i0, i1;
+
+ while (lo >= 0 && lo <= hi) {
+ mid = (lo + hi) >> 1;
+ i0 = table[mid - 1] || null;
+ i1 = table[mid];
+
+ if (!i0) {
+ // given value is outside table (before first item)
+ return {lo: null, hi: i1};
+ } else if (i1[key] < value) {
+ lo = mid + 1;
+ } else if (i0[key] > value) {
+ hi = mid - 1;
+ } else {
+ return {lo: i0, hi: i1};
+ }
+ }
+
+ // given value is outside table (after last item)
+ return {lo: i1, hi: null};
+}
+
+/**
+ * Linearly interpolates the given source `value` using the table items `skey` values and
+ * returns the associated `tkey` value. For example, interpolate(table, 'time', 42, 'pos')
+ * returns the position for a timestamp equal to 42. If value is out of bounds, values at
+ * index [0, 1] or [n - 1, n] are used for the interpolation.
+ */
+function interpolate$1(table, skey, sval, tkey) {
+ var range = lookup(table, skey, sval);
+
+ // Note: the lookup table ALWAYS contains at least 2 items (min and max)
+ var prev = !range.lo ? table[0] : !range.hi ? table[table.length - 2] : range.lo;
+ var next = !range.lo ? table[1] : !range.hi ? table[table.length - 1] : range.hi;
+
+ var span = next[skey] - prev[skey];
+ var ratio = span ? (sval - prev[skey]) / span : 0;
+ var offset = (next[tkey] - prev[tkey]) * ratio;
+
+ return prev[tkey] + offset;
+}
+
+function toTimestamp(scale, input) {
+ var adapter = scale._adapter;
+ var options = scale.options.time;
+ var parser = options.parser;
+ var format = parser || options.format;
+ var value = input;
+
+ if (typeof parser === 'function') {
+ value = parser(value);
+ }
+
+ // Only parse if its not a timestamp already
+ if (!helpers$1.isFinite(value)) {
+ value = typeof format === 'string'
+ ? adapter.parse(value, format)
+ : adapter.parse(value);
+ }
+
+ if (value !== null) {
+ return +value;
+ }
+
+ // Labels are in an incompatible format and no `parser` has been provided.
+ // The user might still use the deprecated `format` option for parsing.
+ if (!parser && typeof format === 'function') {
+ value = format(input);
+
+ // `format` could return something else than a timestamp, if so, parse it
+ if (!helpers$1.isFinite(value)) {
+ value = adapter.parse(value);
+ }
+ }
+
+ return value;
+}
+
+function parse(scale, input) {
+ if (helpers$1.isNullOrUndef(input)) {
+ return null;
+ }
+
+ var options = scale.options.time;
+ var value = toTimestamp(scale, scale.getRightValue(input));
+ if (value === null) {
+ return value;
+ }
+
+ if (options.round) {
+ value = +scale._adapter.startOf(value, options.round);
+ }
+
+ return value;
+}
+
+/**
+ * Figures out what unit results in an appropriate number of auto-generated ticks
+ */
+function determineUnitForAutoTicks(minUnit, min, max, capacity) {
+ var ilen = UNITS.length;
+ var i, interval, factor;
+
+ for (i = UNITS.indexOf(minUnit); i < ilen - 1; ++i) {
+ interval = INTERVALS[UNITS[i]];
+ factor = interval.steps ? interval.steps : MAX_INTEGER;
+
+ if (interval.common && Math.ceil((max - min) / (factor * interval.size)) <= capacity) {
+ return UNITS[i];
+ }
+ }
+
+ return UNITS[ilen - 1];
+}
+
+/**
+ * Figures out what unit to format a set of ticks with
+ */
+function determineUnitForFormatting(scale, numTicks, minUnit, min, max) {
+ var i, unit;
+
+ for (i = UNITS.length - 1; i >= UNITS.indexOf(minUnit); i--) {
+ unit = UNITS[i];
+ if (INTERVALS[unit].common && scale._adapter.diff(max, min, unit) >= numTicks - 1) {
+ return unit;
+ }
+ }
+
+ return UNITS[minUnit ? UNITS.indexOf(minUnit) : 0];
+}
+
+function determineMajorUnit(unit) {
+ for (var i = UNITS.indexOf(unit) + 1, ilen = UNITS.length; i < ilen; ++i) {
+ if (INTERVALS[UNITS[i]].common) {
+ return UNITS[i];
+ }
+ }
+}
+
+/**
+ * Generates a maximum of `capacity` timestamps between min and max, rounded to the
+ * `minor` unit using the given scale time `options`.
+ * Important: this method can return ticks outside the min and max range, it's the
+ * responsibility of the calling code to clamp values if needed.
+ */
+function generate(scale, min, max, capacity) {
+ var adapter = scale._adapter;
+ var options = scale.options;
+ var timeOpts = options.time;
+ var minor = timeOpts.unit || determineUnitForAutoTicks(timeOpts.minUnit, min, max, capacity);
+ var stepSize = resolve$5([timeOpts.stepSize, timeOpts.unitStepSize, 1]);
+ var weekday = minor === 'week' ? timeOpts.isoWeekday : false;
+ var first = min;
+ var ticks = [];
+ var time;
+
+ // For 'week' unit, handle the first day of week option
+ if (weekday) {
+ first = +adapter.startOf(first, 'isoWeek', weekday);
+ }
+
+ // Align first ticks on unit
+ first = +adapter.startOf(first, weekday ? 'day' : minor);
+
+ // Prevent browser from freezing in case user options request millions of milliseconds
+ if (adapter.diff(max, min, minor) > 100000 * stepSize) {
+ throw min + ' and ' + max + ' are too far apart with stepSize of ' + stepSize + ' ' + minor;
+ }
+
+ for (time = first; time < max; time = +adapter.add(time, stepSize, minor)) {
+ ticks.push(time);
+ }
+
+ if (time === max || options.bounds === 'ticks') {
+ ticks.push(time);
+ }
+
+ return ticks;
+}
+
+/**
+ * Returns the start and end offsets from edges in the form of {start, end}
+ * where each value is a relative width to the scale and ranges between 0 and 1.
+ * They add extra margins on the both sides by scaling down the original scale.
+ * Offsets are added when the `offset` option is true.
+ */
+function computeOffsets(table, ticks, min, max, options) {
+ var start = 0;
+ var end = 0;
+ var first, last;
+
+ if (options.offset && ticks.length) {
+ first = interpolate$1(table, 'time', ticks[0], 'pos');
+ if (ticks.length === 1) {
+ start = 1 - first;
+ } else {
+ start = (interpolate$1(table, 'time', ticks[1], 'pos') - first) / 2;
+ }
+ last = interpolate$1(table, 'time', ticks[ticks.length - 1], 'pos');
+ if (ticks.length === 1) {
+ end = last;
+ } else {
+ end = (last - interpolate$1(table, 'time', ticks[ticks.length - 2], 'pos')) / 2;
+ }
+ }
+
+ return {start: start, end: end, factor: 1 / (start + 1 + end)};
+}
+
+function setMajorTicks(scale, ticks, map, majorUnit) {
+ var adapter = scale._adapter;
+ var first = +adapter.startOf(ticks[0].value, majorUnit);
+ var last = ticks[ticks.length - 1].value;
+ var major, index;
+
+ for (major = first; major <= last; major = +adapter.add(major, 1, majorUnit)) {
+ index = map[major];
+ if (index >= 0) {
+ ticks[index].major = true;
+ }
+ }
+ return ticks;
+}
+
+function ticksFromTimestamps(scale, values, majorUnit) {
+ var ticks = [];
+ var map = {};
+ var ilen = values.length;
+ var i, value;
+
+ for (i = 0; i < ilen; ++i) {
+ value = values[i];
+ map[value] = i;
+
+ ticks.push({
+ value: value,
+ major: false
+ });
+ }
+
+ // We set the major ticks separately from the above loop because calling startOf for every tick
+ // is expensive when there is a large number of ticks
+ return (ilen === 0 || !majorUnit) ? ticks : setMajorTicks(scale, ticks, map, majorUnit);
+}
+
+var defaultConfig$4 = {
+ position: 'bottom',
+
+ /**
+ * Data distribution along the scale:
+ * - 'linear': data are spread according to their time (distances can vary),
+ * - 'series': data are spread at the same distance from each other.
+ * @see https://github.com/chartjs/Chart.js/pull/4507
+ * @since 2.7.0
+ */
+ distribution: 'linear',
+
+ /**
+ * Scale boundary strategy (bypassed by min/max time options)
+ * - `data`: make sure data are fully visible, ticks outside are removed
+ * - `ticks`: make sure ticks are fully visible, data outside are truncated
+ * @see https://github.com/chartjs/Chart.js/pull/4556
+ * @since 2.7.0
+ */
+ bounds: 'data',
+
+ adapters: {},
+ time: {
+ parser: false, // false == a pattern string from https://momentjs.com/docs/#/parsing/string-format/ or a custom callback that converts its argument to a moment
+ unit: false, // false == automatic or override with week, month, year, etc.
+ round: false, // none, or override with week, month, year, etc.
+ displayFormat: false, // DEPRECATED
+ isoWeekday: false, // override week start day - see https://momentjs.com/docs/#/get-set/iso-weekday/
+ minUnit: 'millisecond',
+ displayFormats: {}
+ },
+ ticks: {
+ autoSkip: false,
+
+ /**
+ * Ticks generation input values:
+ * - 'auto': generates "optimal" ticks based on scale size and time options.
+ * - 'data': generates ticks from data (including labels from data {t|x|y} objects).
+ * - 'labels': generates ticks from user given `data.labels` values ONLY.
+ * @see https://github.com/chartjs/Chart.js/pull/4507
+ * @since 2.7.0
+ */
+ source: 'auto',
+
+ major: {
+ enabled: false
+ }
+ }
+};
+
+var scale_time = core_scale.extend({
+ initialize: function() {
+ this.mergeTicksOptions();
+ core_scale.prototype.initialize.call(this);
+ },
+
+ update: function() {
+ var me = this;
+ var options = me.options;
+ var time = options.time || (options.time = {});
+ var adapter = me._adapter = new core_adapters._date(options.adapters.date);
+
+ // DEPRECATIONS: output a message only one time per update
+ deprecated$1('time scale', time.format, 'time.format', 'time.parser');
+ deprecated$1('time scale', time.min, 'time.min', 'ticks.min');
+ deprecated$1('time scale', time.max, 'time.max', 'ticks.max');
+
+ // Backward compatibility: before introducing adapter, `displayFormats` was
+ // supposed to contain *all* unit/string pairs but this can't be resolved
+ // when loading the scale (adapters are loaded afterward), so let's populate
+ // missing formats on update
+ helpers$1.mergeIf(time.displayFormats, adapter.formats());
+
+ return core_scale.prototype.update.apply(me, arguments);
+ },
+
+ /**
+ * Allows data to be referenced via 't' attribute
+ */
+ getRightValue: function(rawValue) {
+ if (rawValue && rawValue.t !== undefined) {
+ rawValue = rawValue.t;
+ }
+ return core_scale.prototype.getRightValue.call(this, rawValue);
+ },
+
+ determineDataLimits: function() {
+ var me = this;
+ var chart = me.chart;
+ var adapter = me._adapter;
+ var options = me.options;
+ var unit = options.time.unit || 'day';
+ var min = MAX_INTEGER;
+ var max = MIN_INTEGER;
+ var timestamps = [];
+ var datasets = [];
+ var labels = [];
+ var i, j, ilen, jlen, data, timestamp, labelsAdded;
+ var dataLabels = me._getLabels();
+
+ for (i = 0, ilen = dataLabels.length; i < ilen; ++i) {
+ labels.push(parse(me, dataLabels[i]));
+ }
+
+ for (i = 0, ilen = (chart.data.datasets || []).length; i < ilen; ++i) {
+ if (chart.isDatasetVisible(i)) {
+ data = chart.data.datasets[i].data;
+
+ // Let's consider that all data have the same format.
+ if (helpers$1.isObject(data[0])) {
+ datasets[i] = [];
+
+ for (j = 0, jlen = data.length; j < jlen; ++j) {
+ timestamp = parse(me, data[j]);
+ timestamps.push(timestamp);
+ datasets[i][j] = timestamp;
+ }
+ } else {
+ datasets[i] = labels.slice(0);
+ if (!labelsAdded) {
+ timestamps = timestamps.concat(labels);
+ labelsAdded = true;
+ }
+ }
+ } else {
+ datasets[i] = [];
+ }
+ }
+
+ if (labels.length) {
+ min = Math.min(min, labels[0]);
+ max = Math.max(max, labels[labels.length - 1]);
+ }
+
+ if (timestamps.length) {
+ timestamps = ilen > 1 ? arrayUnique(timestamps).sort(sorter) : timestamps.sort(sorter);
+ min = Math.min(min, timestamps[0]);
+ max = Math.max(max, timestamps[timestamps.length - 1]);
+ }
+
+ min = parse(me, getMin(options)) || min;
+ max = parse(me, getMax(options)) || max;
+
+ // In case there is no valid min/max, set limits based on unit time option
+ min = min === MAX_INTEGER ? +adapter.startOf(Date.now(), unit) : min;
+ max = max === MIN_INTEGER ? +adapter.endOf(Date.now(), unit) + 1 : max;
+
+ // Make sure that max is strictly higher than min (required by the lookup table)
+ me.min = Math.min(min, max);
+ me.max = Math.max(min + 1, max);
+
+ // PRIVATE
+ me._table = [];
+ me._timestamps = {
+ data: timestamps,
+ datasets: datasets,
+ labels: labels
+ };
+ },
+
+ buildTicks: function() {
+ var me = this;
+ var min = me.min;
+ var max = me.max;
+ var options = me.options;
+ var tickOpts = options.ticks;
+ var timeOpts = options.time;
+ var timestamps = me._timestamps;
+ var ticks = [];
+ var capacity = me.getLabelCapacity(min);
+ var source = tickOpts.source;
+ var distribution = options.distribution;
+ var i, ilen, timestamp;
+
+ if (source === 'data' || (source === 'auto' && distribution === 'series')) {
+ timestamps = timestamps.data;
+ } else if (source === 'labels') {
+ timestamps = timestamps.labels;
+ } else {
+ timestamps = generate(me, min, max, capacity);
+ }
+
+ if (options.bounds === 'ticks' && timestamps.length) {
+ min = timestamps[0];
+ max = timestamps[timestamps.length - 1];
+ }
+
+ // Enforce limits with user min/max options
+ min = parse(me, getMin(options)) || min;
+ max = parse(me, getMax(options)) || max;
+
+ // Remove ticks outside the min/max range
+ for (i = 0, ilen = timestamps.length; i < ilen; ++i) {
+ timestamp = timestamps[i];
+ if (timestamp >= min && timestamp <= max) {
+ ticks.push(timestamp);
+ }
+ }
+
+ me.min = min;
+ me.max = max;
+
+ // PRIVATE
+ // determineUnitForFormatting relies on the number of ticks so we don't use it when
+ // autoSkip is enabled because we don't yet know what the final number of ticks will be
+ me._unit = timeOpts.unit || (tickOpts.autoSkip
+ ? determineUnitForAutoTicks(timeOpts.minUnit, me.min, me.max, capacity)
+ : determineUnitForFormatting(me, ticks.length, timeOpts.minUnit, me.min, me.max));
+ me._majorUnit = !tickOpts.major.enabled || me._unit === 'year' ? undefined
+ : determineMajorUnit(me._unit);
+ me._table = buildLookupTable(me._timestamps.data, min, max, distribution);
+ me._offsets = computeOffsets(me._table, ticks, min, max, options);
+
+ if (tickOpts.reverse) {
+ ticks.reverse();
+ }
+
+ return ticksFromTimestamps(me, ticks, me._majorUnit);
+ },
+
+ getLabelForIndex: function(index, datasetIndex) {
+ var me = this;
+ var adapter = me._adapter;
+ var data = me.chart.data;
+ var timeOpts = me.options.time;
+ var label = data.labels && index < data.labels.length ? data.labels[index] : '';
+ var value = data.datasets[datasetIndex].data[index];
+
+ if (helpers$1.isObject(value)) {
+ label = me.getRightValue(value);
+ }
+ if (timeOpts.tooltipFormat) {
+ return adapter.format(toTimestamp(me, label), timeOpts.tooltipFormat);
+ }
+ if (typeof label === 'string') {
+ return label;
+ }
+ return adapter.format(toTimestamp(me, label), timeOpts.displayFormats.datetime);
+ },
+
+ /**
+ * Function to format an individual tick mark
+ * @private
+ */
+ tickFormatFunction: function(time, index, ticks, format) {
+ var me = this;
+ var adapter = me._adapter;
+ var options = me.options;
+ var formats = options.time.displayFormats;
+ var minorFormat = formats[me._unit];
+ var majorUnit = me._majorUnit;
+ var majorFormat = formats[majorUnit];
+ var tick = ticks[index];
+ var tickOpts = options.ticks;
+ var major = majorUnit && majorFormat && tick && tick.major;
+ var label = adapter.format(time, format ? format : major ? majorFormat : minorFormat);
+ var nestedTickOpts = major ? tickOpts.major : tickOpts.minor;
+ var formatter = resolve$5([
+ nestedTickOpts.callback,
+ nestedTickOpts.userCallback,
+ tickOpts.callback,
+ tickOpts.userCallback
+ ]);
+
+ return formatter ? formatter(label, index, ticks) : label;
+ },
+
+ convertTicksToLabels: function(ticks) {
+ var labels = [];
+ var i, ilen;
+
+ for (i = 0, ilen = ticks.length; i < ilen; ++i) {
+ labels.push(this.tickFormatFunction(ticks[i].value, i, ticks));
+ }
+
+ return labels;
+ },
+
+ /**
+ * @private
+ */
+ getPixelForOffset: function(time) {
+ var me = this;
+ var offsets = me._offsets;
+ var pos = interpolate$1(me._table, 'time', time, 'pos');
+ return me.getPixelForDecimal((offsets.start + pos) * offsets.factor);
+ },
+
+ getPixelForValue: function(value, index, datasetIndex) {
+ var me = this;
+ var time = null;
+
+ if (index !== undefined && datasetIndex !== undefined) {
+ time = me._timestamps.datasets[datasetIndex][index];
+ }
+
+ if (time === null) {
+ time = parse(me, value);
+ }
+
+ if (time !== null) {
+ return me.getPixelForOffset(time);
+ }
+ },
+
+ getPixelForTick: function(index) {
+ var ticks = this.getTicks();
+ return index >= 0 && index < ticks.length ?
+ this.getPixelForOffset(ticks[index].value) :
+ null;
+ },
+
+ getValueForPixel: function(pixel) {
+ var me = this;
+ var offsets = me._offsets;
+ var pos = me.getDecimalForPixel(pixel) / offsets.factor - offsets.end;
+ var time = interpolate$1(me._table, 'pos', pos, 'time');
+
+ // DEPRECATION, we should return time directly
+ return me._adapter._create(time);
+ },
+
+ /**
+ * @private
+ */
+ _getLabelSize: function(label) {
+ var me = this;
+ var ticksOpts = me.options.ticks;
+ var tickLabelWidth = me.ctx.measureText(label).width;
+ var angle = helpers$1.toRadians(me.isHorizontal() ? ticksOpts.maxRotation : ticksOpts.minRotation);
+ var cosRotation = Math.cos(angle);
+ var sinRotation = Math.sin(angle);
+ var tickFontSize = valueOrDefault$d(ticksOpts.fontSize, core_defaults.global.defaultFontSize);
+
+ return {
+ w: (tickLabelWidth * cosRotation) + (tickFontSize * sinRotation),
+ h: (tickLabelWidth * sinRotation) + (tickFontSize * cosRotation)
+ };
+ },
+
+ /**
+ * Crude approximation of what the label width might be
+ * @private
+ */
+ getLabelWidth: function(label) {
+ return this._getLabelSize(label).w;
+ },
+
+ /**
+ * @private
+ */
+ getLabelCapacity: function(exampleTime) {
+ var me = this;
+ var timeOpts = me.options.time;
+ var displayFormats = timeOpts.displayFormats;
+
+ // pick the longest format (milliseconds) for guestimation
+ var format = displayFormats[timeOpts.unit] || displayFormats.millisecond;
+ var exampleLabel = me.tickFormatFunction(exampleTime, 0, ticksFromTimestamps(me, [exampleTime], me._majorUnit), format);
+ var size = me._getLabelSize(exampleLabel);
+ var capacity = Math.floor(me.isHorizontal() ? me.width / size.w : me.height / size.h);
+
+ if (me.options.offset) {
+ capacity--;
+ }
+
+ return capacity > 0 ? capacity : 1;
+ }
+});
+
+// INTERNAL: static default options, registered in src/index.js
+var _defaults$4 = defaultConfig$4; +scale_time._defaults = _defaults$4; + +var scales = {
+ category: scale_category,
+ linear: scale_linear,
+ logarithmic: scale_logarithmic,
+ radialLinear: scale_radialLinear,
+ time: scale_time
+}; + +var FORMATS = {
+ datetime: 'MMM D, YYYY, h:mm:ss a',
+ millisecond: 'h:mm:ss.SSS a',
+ second: 'h:mm:ss a',
+ minute: 'h:mm a',
+ hour: 'hA',
+ day: 'MMM D',
+ week: 'll',
+ month: 'MMM YYYY',
+ quarter: '[Q]Q - YYYY',
+ year: 'YYYY'
+};
+
+core_adapters._date.override(typeof moment === 'function' ? {
+ _id: 'moment', // DEBUG ONLY
+
+ formats: function() {
+ return FORMATS;
+ },
+
+ parse: function(value, format) {
+ if (typeof value === 'string' && typeof format === 'string') {
+ value = moment(value, format);
+ } else if (!(value instanceof moment)) {
+ value = moment(value);
+ }
+ return value.isValid() ? value.valueOf() : null;
+ },
+
+ format: function(time, format) {
+ return moment(time).format(format);
+ },
+
+ add: function(time, amount, unit) {
+ return moment(time).add(amount, unit).valueOf();
+ },
+
+ diff: function(max, min, unit) {
+ return moment(max).diff(moment(min), unit);
+ },
+
+ startOf: function(time, unit, weekday) {
+ time = moment(time);
+ if (unit === 'isoWeek') {
+ return time.isoWeekday(weekday).valueOf();
+ }
+ return time.startOf(unit).valueOf();
+ },
+
+ endOf: function(time, unit) {
+ return moment(time).endOf(unit).valueOf();
+ },
+
+ // DEPRECATIONS
+
+ /**
+ * Provided for backward compatibility with scale.getValueForPixel().
+ * @deprecated since version 2.8.0
+ * @todo remove at version 3
+ * @private
+ */
+ _create: function(time) {
+ return moment(time);
+ },
+} : {}); + +core_defaults._set('global', {
+ plugins: {
+ filler: {
+ propagate: true
+ }
+ }
+});
+
+var mappers = {
+ dataset: function(source) {
+ var index = source.fill;
+ var chart = source.chart;
+ var meta = chart.getDatasetMeta(index);
+ var visible = meta && chart.isDatasetVisible(index);
+ var points = (visible && meta.dataset._children) || [];
+ var length = points.length || 0;
+
+ return !length ? null : function(point, i) {
+ return (i < length && points[i]._view) || null;
+ };
+ },
+
+ boundary: function(source) {
+ var boundary = source.boundary;
+ var x = boundary ? boundary.x : null;
+ var y = boundary ? boundary.y : null;
+
+ if (helpers$1.isArray(boundary)) {
+ return function(point, i) {
+ return boundary[i];
+ };
+ }
+
+ return function(point) {
+ return {
+ x: x === null ? point.x : x,
+ y: y === null ? point.y : y,
+ };
+ };
+ }
+};
+
+// @todo if (fill[0] === '#')
+function decodeFill(el, index, count) {
+ var model = el._model || {};
+ var fill = model.fill;
+ var target;
+
+ if (fill === undefined) {
+ fill = !!model.backgroundColor;
+ }
+
+ if (fill === false || fill === null) {
+ return false;
+ }
+
+ if (fill === true) {
+ return 'origin';
+ }
+
+ target = parseFloat(fill, 10);
+ if (isFinite(target) && Math.floor(target) === target) {
+ if (fill[0] === '-' || fill[0] === '+') {
+ target = index + target;
+ }
+
+ if (target === index || target < 0 || target >= count) {
+ return false;
+ }
+
+ return target;
+ }
+
+ switch (fill) {
+ // compatibility
+ case 'bottom':
+ return 'start';
+ case 'top':
+ return 'end';
+ case 'zero':
+ return 'origin';
+ // supported boundaries
+ case 'origin':
+ case 'start':
+ case 'end':
+ return fill;
+ // invalid fill values
+ default:
+ return false;
+ }
+}
+
+function computeLinearBoundary(source) {
+ var model = source.el._model || {};
+ var scale = source.el._scale || {};
+ var fill = source.fill;
+ var target = null;
+ var horizontal;
+
+ if (isFinite(fill)) {
+ return null;
+ }
+
+ // Backward compatibility: until v3, we still need to support boundary values set on
+ // the model (scaleTop, scaleBottom and scaleZero) because some external plugins and
+ // controllers might still use it (e.g. the Smith chart).
+
+ if (fill === 'start') {
+ target = model.scaleBottom === undefined ? scale.bottom : model.scaleBottom;
+ } else if (fill === 'end') {
+ target = model.scaleTop === undefined ? scale.top : model.scaleTop;
+ } else if (model.scaleZero !== undefined) {
+ target = model.scaleZero;
+ } else if (scale.getBasePixel) {
+ target = scale.getBasePixel();
+ }
+
+ if (target !== undefined && target !== null) {
+ if (target.x !== undefined && target.y !== undefined) {
+ return target;
+ }
+
+ if (helpers$1.isFinite(target)) {
+ horizontal = scale.isHorizontal();
+ return {
+ x: horizontal ? target : null,
+ y: horizontal ? null : target
+ };
+ }
+ }
+
+ return null;
+}
+
+function computeCircularBoundary(source) {
+ var scale = source.el._scale;
+ var options = scale.options;
+ var length = scale.chart.data.labels.length;
+ var fill = source.fill;
+ var target = [];
+ var start, end, center, i, point;
+
+ if (!length) {
+ return null;
+ }
+
+ start = options.ticks.reverse ? scale.max : scale.min;
+ end = options.ticks.reverse ? scale.min : scale.max;
+ center = scale.getPointPositionForValue(0, start);
+ for (i = 0; i < length; ++i) {
+ point = fill === 'start' || fill === 'end'
+ ? scale.getPointPositionForValue(i, fill === 'start' ? start : end)
+ : scale.getBasePosition(i);
+ if (options.gridLines.circular) {
+ point.cx = center.x;
+ point.cy = center.y;
+ point.angle = scale.getIndexAngle(i) - Math.PI / 2;
+ }
+ target.push(point);
+ }
+ return target;
+}
+
+function computeBoundary(source) {
+ var scale = source.el._scale || {};
+
+ if (scale.getPointPositionForValue) {
+ return computeCircularBoundary(source);
+ }
+ return computeLinearBoundary(source);
+}
+
+function resolveTarget(sources, index, propagate) {
+ var source = sources[index];
+ var fill = source.fill;
+ var visited = [index];
+ var target;
+
+ if (!propagate) {
+ return fill;
+ }
+
+ while (fill !== false && visited.indexOf(fill) === -1) {
+ if (!isFinite(fill)) {
+ return fill;
+ }
+
+ target = sources[fill];
+ if (!target) {
+ return false;
+ }
+
+ if (target.visible) {
+ return fill;
+ }
+
+ visited.push(fill);
+ fill = target.fill;
+ }
+
+ return false;
+}
+
+function createMapper(source) {
+ var fill = source.fill;
+ var type = 'dataset';
+
+ if (fill === false) {
+ return null;
+ }
+
+ if (!isFinite(fill)) {
+ type = 'boundary';
+ }
+
+ return mappers[type](source);
+}
+
+function isDrawable(point) {
+ return point && !point.skip;
+}
+
+function drawArea(ctx, curve0, curve1, len0, len1) {
+ var i, cx, cy, r;
+
+ if (!len0 || !len1) {
+ return;
+ }
+
+ // building first area curve (normal)
+ ctx.moveTo(curve0[0].x, curve0[0].y);
+ for (i = 1; i < len0; ++i) {
+ helpers$1.canvas.lineTo(ctx, curve0[i - 1], curve0[i]);
+ }
+
+ if (curve1[0].angle !== undefined) {
+ cx = curve1[0].cx;
+ cy = curve1[0].cy;
+ r = Math.sqrt(Math.pow(curve1[0].x - cx, 2) + Math.pow(curve1[0].y - cy, 2));
+ for (i = len1 - 1; i > 0; --i) {
+ ctx.arc(cx, cy, r, curve1[i].angle, curve1[i - 1].angle, true);
+ }
+ return;
+ }
+
+ // joining the two area curves
+ ctx.lineTo(curve1[len1 - 1].x, curve1[len1 - 1].y);
+
+ // building opposite area curve (reverse)
+ for (i = len1 - 1; i > 0; --i) {
+ helpers$1.canvas.lineTo(ctx, curve1[i], curve1[i - 1], true);
+ }
+}
+
+function doFill(ctx, points, mapper, view, color, loop) {
+ var count = points.length;
+ var span = view.spanGaps;
+ var curve0 = [];
+ var curve1 = [];
+ var len0 = 0;
+ var len1 = 0;
+ var i, ilen, index, p0, p1, d0, d1, loopOffset;
+
+ ctx.beginPath();
+
+ for (i = 0, ilen = count; i < ilen; ++i) {
+ index = i % count;
+ p0 = points[index]._view;
+ p1 = mapper(p0, index, view);
+ d0 = isDrawable(p0);
+ d1 = isDrawable(p1);
+
+ if (loop && loopOffset === undefined && d0) {
+ loopOffset = i + 1;
+ ilen = count + loopOffset;
+ }
+
+ if (d0 && d1) {
+ len0 = curve0.push(p0);
+ len1 = curve1.push(p1);
+ } else if (len0 && len1) {
+ if (!span) {
+ drawArea(ctx, curve0, curve1, len0, len1);
+ len0 = len1 = 0;
+ curve0 = [];
+ curve1 = [];
+ } else {
+ if (d0) {
+ curve0.push(p0);
+ }
+ if (d1) {
+ curve1.push(p1);
+ }
+ }
+ }
+ }
+
+ drawArea(ctx, curve0, curve1, len0, len1);
+
+ ctx.closePath();
+ ctx.fillStyle = color;
+ ctx.fill();
+}
+
+var plugin_filler = {
+ id: 'filler',
+
+ afterDatasetsUpdate: function(chart, options) {
+ var count = (chart.data.datasets || []).length;
+ var propagate = options.propagate;
+ var sources = [];
+ var meta, i, el, source;
+
+ for (i = 0; i < count; ++i) {
+ meta = chart.getDatasetMeta(i);
+ el = meta.dataset;
+ source = null;
+
+ if (el && el._model && el instanceof elements.Line) {
+ source = {
+ visible: chart.isDatasetVisible(i),
+ fill: decodeFill(el, i, count),
+ chart: chart,
+ el: el
+ };
+ }
+
+ meta.$filler = source;
+ sources.push(source);
+ }
+
+ for (i = 0; i < count; ++i) {
+ source = sources[i];
+ if (!source) {
+ continue;
+ }
+
+ source.fill = resolveTarget(sources, i, propagate);
+ source.boundary = computeBoundary(source);
+ source.mapper = createMapper(source);
+ }
+ },
+
+ beforeDatasetsDraw: function(chart) {
+ var metasets = chart._getSortedVisibleDatasetMetas();
+ var ctx = chart.ctx;
+ var meta, i, el, view, points, mapper, color;
+
+ for (i = metasets.length - 1; i >= 0; --i) {
+ meta = metasets[i].$filler;
+
+ if (!meta || !meta.visible) {
+ continue;
+ }
+
+ el = meta.el;
+ view = el._view;
+ points = el._children || [];
+ mapper = meta.mapper;
+ color = view.backgroundColor || core_defaults.global.defaultColor;
+
+ if (mapper && color && points.length) {
+ helpers$1.canvas.clipArea(ctx, chart.chartArea);
+ doFill(ctx, points, mapper, view, color, el._loop);
+ helpers$1.canvas.unclipArea(ctx);
+ }
+ }
+ }
+}; + +var getRtlHelper$1 = helpers$1.rtl.getRtlAdapter;
+var noop$1 = helpers$1.noop;
+var valueOrDefault$e = helpers$1.valueOrDefault;
+
+core_defaults._set('global', {
+ legend: {
+ display: true,
+ position: 'top',
+ align: 'center',
+ fullWidth: true,
+ reverse: false,
+ weight: 1000,
+
+ // a callback that will handle
+ onClick: function(e, legendItem) {
+ var index = legendItem.datasetIndex;
+ var ci = this.chart;
+ var meta = ci.getDatasetMeta(index);
+
+ // See controller.isDatasetVisible comment
+ meta.hidden = meta.hidden === null ? !ci.data.datasets[index].hidden : null;
+
+ // We hid a dataset ... rerender the chart
+ ci.update();
+ },
+
+ onHover: null,
+ onLeave: null,
+
+ labels: {
+ boxWidth: 40,
+ padding: 10,
+ // Generates labels shown in the legend
+ // Valid properties to return:
+ // text : text to display
+ // fillStyle : fill of coloured box
+ // strokeStyle: stroke of coloured box
+ // hidden : if this legend item refers to a hidden item
+ // lineCap : cap style for line
+ // lineDash
+ // lineDashOffset :
+ // lineJoin :
+ // lineWidth :
+ generateLabels: function(chart) {
+ var datasets = chart.data.datasets;
+ var options = chart.options.legend || {};
+ var usePointStyle = options.labels && options.labels.usePointStyle;
+
+ return chart._getSortedDatasetMetas().map(function(meta) {
+ var style = meta.controller.getStyle(usePointStyle ? 0 : undefined);
+
+ return {
+ text: datasets[meta.index].label,
+ fillStyle: style.backgroundColor,
+ hidden: !chart.isDatasetVisible(meta.index),
+ lineCap: style.borderCapStyle,
+ lineDash: style.borderDash,
+ lineDashOffset: style.borderDashOffset,
+ lineJoin: style.borderJoinStyle,
+ lineWidth: style.borderWidth,
+ strokeStyle: style.borderColor,
+ pointStyle: style.pointStyle,
+ rotation: style.rotation,
+
+ // Below is extra data used for toggling the datasets
+ datasetIndex: meta.index
+ };
+ }, this);
+ }
+ }
+ },
+
+ legendCallback: function(chart) {
+ var list = document.createElement('ul');
+ var datasets = chart.data.datasets;
+ var i, ilen, listItem, listItemSpan;
+
+ list.setAttribute('class', chart.id + '-legend');
+
+ for (i = 0, ilen = datasets.length; i < ilen; i++) {
+ listItem = list.appendChild(document.createElement('li'));
+ listItemSpan = listItem.appendChild(document.createElement('span'));
+ listItemSpan.style.backgroundColor = datasets[i].backgroundColor;
+ if (datasets[i].label) {
+ listItem.appendChild(document.createTextNode(datasets[i].label));
+ }
+ }
+
+ return list.outerHTML;
+ }
+});
+
+/**
+ * Helper function to get the box width based on the usePointStyle option
+ * @param {object} labelopts - the label options on the legend
+ * @param {number} fontSize - the label font size
+ * @return {number} width of the color box area
+ */
+function getBoxWidth(labelOpts, fontSize) {
+ return labelOpts.usePointStyle && labelOpts.boxWidth > fontSize ?
+ fontSize :
+ labelOpts.boxWidth;
+}
+
+/**
+ * IMPORTANT: this class is exposed publicly as Chart.Legend, backward compatibility required!
+ */
+var Legend = core_element.extend({
+
+ initialize: function(config) {
+ var me = this;
+ helpers$1.extend(me, config);
+
+ // Contains hit boxes for each dataset (in dataset order)
+ me.legendHitBoxes = [];
+
+ /**
+ * @private
+ */
+ me._hoveredItem = null;
+
+ // Are we in doughnut mode which has a different data type
+ me.doughnutMode = false;
+ },
+
+ // These methods are ordered by lifecycle. Utilities then follow.
+ // Any function defined here is inherited by all legend types.
+ // Any function can be extended by the legend type
+
+ beforeUpdate: noop$1,
+ update: function(maxWidth, maxHeight, margins) {
+ var me = this;
+
+ // Update Lifecycle - Probably don't want to ever extend or overwrite this function ;)
+ me.beforeUpdate();
+
+ // Absorb the master measurements
+ me.maxWidth = maxWidth;
+ me.maxHeight = maxHeight;
+ me.margins = margins;
+
+ // Dimensions
+ me.beforeSetDimensions();
+ me.setDimensions();
+ me.afterSetDimensions();
+ // Labels
+ me.beforeBuildLabels();
+ me.buildLabels();
+ me.afterBuildLabels();
+
+ // Fit
+ me.beforeFit();
+ me.fit();
+ me.afterFit();
+ //
+ me.afterUpdate();
+
+ return me.minSize;
+ },
+ afterUpdate: noop$1,
+
+ //
+
+ beforeSetDimensions: noop$1,
+ setDimensions: function() {
+ var me = this;
+ // Set the unconstrained dimension before label rotation
+ if (me.isHorizontal()) {
+ // Reset position before calculating rotation
+ me.width = me.maxWidth;
+ me.left = 0;
+ me.right = me.width;
+ } else {
+ me.height = me.maxHeight;
+
+ // Reset position before calculating rotation
+ me.top = 0;
+ me.bottom = me.height;
+ }
+
+ // Reset padding
+ me.paddingLeft = 0;
+ me.paddingTop = 0;
+ me.paddingRight = 0;
+ me.paddingBottom = 0;
+
+ // Reset minSize
+ me.minSize = {
+ width: 0,
+ height: 0
+ };
+ },
+ afterSetDimensions: noop$1,
+
+ //
+
+ beforeBuildLabels: noop$1,
+ buildLabels: function() {
+ var me = this;
+ var labelOpts = me.options.labels || {};
+ var legendItems = helpers$1.callback(labelOpts.generateLabels, [me.chart], me) || [];
+
+ if (labelOpts.filter) {
+ legendItems = legendItems.filter(function(item) {
+ return labelOpts.filter(item, me.chart.data);
+ });
+ }
+
+ if (me.options.reverse) {
+ legendItems.reverse();
+ }
+
+ me.legendItems = legendItems;
+ },
+ afterBuildLabels: noop$1,
+
+ //
+
+ beforeFit: noop$1,
+ fit: function() {
+ var me = this;
+ var opts = me.options;
+ var labelOpts = opts.labels;
+ var display = opts.display;
+
+ var ctx = me.ctx;
+
+ var labelFont = helpers$1.options._parseFont(labelOpts);
+ var fontSize = labelFont.size;
+
+ // Reset hit boxes
+ var hitboxes = me.legendHitBoxes = [];
+
+ var minSize = me.minSize;
+ var isHorizontal = me.isHorizontal();
+
+ if (isHorizontal) {
+ minSize.width = me.maxWidth; // fill all the width
+ minSize.height = display ? 10 : 0;
+ } else {
+ minSize.width = display ? 10 : 0;
+ minSize.height = me.maxHeight; // fill all the height
+ }
+
+ // Increase sizes here
+ if (!display) {
+ me.width = minSize.width = me.height = minSize.height = 0;
+ return;
+ }
+ ctx.font = labelFont.string;
+
+ if (isHorizontal) {
+ // Labels
+
+ // Width of each line of legend boxes. Labels wrap onto multiple lines when there are too many to fit on one
+ var lineWidths = me.lineWidths = [0];
+ var totalHeight = 0;
+
+ ctx.textAlign = 'left';
+ ctx.textBaseline = 'middle';
+
+ helpers$1.each(me.legendItems, function(legendItem, i) {
+ var boxWidth = getBoxWidth(labelOpts, fontSize);
+ var width = boxWidth + (fontSize / 2) + ctx.measureText(legendItem.text).width;
+
+ if (i === 0 || lineWidths[lineWidths.length - 1] + width + 2 * labelOpts.padding > minSize.width) {
+ totalHeight += fontSize + labelOpts.padding;
+ lineWidths[lineWidths.length - (i > 0 ? 0 : 1)] = 0;
+ }
+
+ // Store the hitbox width and height here. Final position will be updated in `draw`
+ hitboxes[i] = {
+ left: 0,
+ top: 0,
+ width: width,
+ height: fontSize
+ };
+
+ lineWidths[lineWidths.length - 1] += width + labelOpts.padding;
+ });
+
+ minSize.height += totalHeight;
+
+ } else {
+ var vPadding = labelOpts.padding;
+ var columnWidths = me.columnWidths = [];
+ var columnHeights = me.columnHeights = [];
+ var totalWidth = labelOpts.padding;
+ var currentColWidth = 0;
+ var currentColHeight = 0;
+
+ helpers$1.each(me.legendItems, function(legendItem, i) {
+ var boxWidth = getBoxWidth(labelOpts, fontSize);
+ var itemWidth = boxWidth + (fontSize / 2) + ctx.measureText(legendItem.text).width;
+
+ // If too tall, go to new column
+ if (i > 0 && currentColHeight + fontSize + 2 * vPadding > minSize.height) {
+ totalWidth += currentColWidth + labelOpts.padding;
+ columnWidths.push(currentColWidth); // previous column width
+ columnHeights.push(currentColHeight);
+ currentColWidth = 0;
+ currentColHeight = 0;
+ }
+
+ // Get max width
+ currentColWidth = Math.max(currentColWidth, itemWidth);
+ currentColHeight += fontSize + vPadding;
+
+ // Store the hitbox width and height here. Final position will be updated in `draw`
+ hitboxes[i] = {
+ left: 0,
+ top: 0,
+ width: itemWidth,
+ height: fontSize
+ };
+ });
+
+ totalWidth += currentColWidth;
+ columnWidths.push(currentColWidth);
+ columnHeights.push(currentColHeight);
+ minSize.width += totalWidth;
+ }
+
+ me.width = minSize.width;
+ me.height = minSize.height;
+ },
+ afterFit: noop$1,
+
+ // Shared Methods
+ isHorizontal: function() {
+ return this.options.position === 'top' || this.options.position === 'bottom';
+ },
+
+ // Actually draw the legend on the canvas
+ draw: function() {
+ var me = this;
+ var opts = me.options;
+ var labelOpts = opts.labels;
+ var globalDefaults = core_defaults.global;
+ var defaultColor = globalDefaults.defaultColor;
+ var lineDefault = globalDefaults.elements.line;
+ var legendHeight = me.height;
+ var columnHeights = me.columnHeights;
+ var legendWidth = me.width;
+ var lineWidths = me.lineWidths;
+
+ if (!opts.display) {
+ return;
+ }
+
+ var rtlHelper = getRtlHelper$1(opts.rtl, me.left, me.minSize.width);
+ var ctx = me.ctx;
+ var fontColor = valueOrDefault$e(labelOpts.fontColor, globalDefaults.defaultFontColor);
+ var labelFont = helpers$1.options._parseFont(labelOpts);
+ var fontSize = labelFont.size;
+ var cursor;
+
+ // Canvas setup
+ ctx.textAlign = rtlHelper.textAlign('left');
+ ctx.textBaseline = 'middle';
+ ctx.lineWidth = 0.5;
+ ctx.strokeStyle = fontColor; // for strikethrough effect
+ ctx.fillStyle = fontColor; // render in correct colour
+ ctx.font = labelFont.string;
+
+ var boxWidth = getBoxWidth(labelOpts, fontSize);
+ var hitboxes = me.legendHitBoxes;
+
+ // current position
+ var drawLegendBox = function(x, y, legendItem) {
+ if (isNaN(boxWidth) || boxWidth <= 0) {
+ return;
+ }
+
+ // Set the ctx for the box
+ ctx.save();
+
+ var lineWidth = valueOrDefault$e(legendItem.lineWidth, lineDefault.borderWidth);
+ ctx.fillStyle = valueOrDefault$e(legendItem.fillStyle, defaultColor);
+ ctx.lineCap = valueOrDefault$e(legendItem.lineCap, lineDefault.borderCapStyle);
+ ctx.lineDashOffset = valueOrDefault$e(legendItem.lineDashOffset, lineDefault.borderDashOffset);
+ ctx.lineJoin = valueOrDefault$e(legendItem.lineJoin, lineDefault.borderJoinStyle);
+ ctx.lineWidth = lineWidth;
+ ctx.strokeStyle = valueOrDefault$e(legendItem.strokeStyle, defaultColor);
+
+ if (ctx.setLineDash) {
+ // IE 9 and 10 do not support line dash
+ ctx.setLineDash(valueOrDefault$e(legendItem.lineDash, lineDefault.borderDash));
+ }
+
+ if (labelOpts && labelOpts.usePointStyle) {
+ // Recalculate x and y for drawPoint() because its expecting
+ // x and y to be center of figure (instead of top left)
+ var radius = boxWidth * Math.SQRT2 / 2;
+ var centerX = rtlHelper.xPlus(x, boxWidth / 2);
+ var centerY = y + fontSize / 2;
+
+ // Draw pointStyle as legend symbol
+ helpers$1.canvas.drawPoint(ctx, legendItem.pointStyle, radius, centerX, centerY, legendItem.rotation);
+ } else {
+ // Draw box as legend symbol
+ ctx.fillRect(rtlHelper.leftForLtr(x, boxWidth), y, boxWidth, fontSize);
+ if (lineWidth !== 0) {
+ ctx.strokeRect(rtlHelper.leftForLtr(x, boxWidth), y, boxWidth, fontSize);
+ }
+ }
+
+ ctx.restore();
+ };
+
+ var fillText = function(x, y, legendItem, textWidth) {
+ var halfFontSize = fontSize / 2;
+ var xLeft = rtlHelper.xPlus(x, boxWidth + halfFontSize);
+ var yMiddle = y + halfFontSize;
+
+ ctx.fillText(legendItem.text, xLeft, yMiddle);
+
+ if (legendItem.hidden) {
+ // Strikethrough the text if hidden
+ ctx.beginPath();
+ ctx.lineWidth = 2;
+ ctx.moveTo(xLeft, yMiddle);
+ ctx.lineTo(rtlHelper.xPlus(xLeft, textWidth), yMiddle);
+ ctx.stroke();
+ }
+ };
+
+ var alignmentOffset = function(dimension, blockSize) {
+ switch (opts.align) {
+ case 'start':
+ return labelOpts.padding;
+ case 'end':
+ return dimension - blockSize;
+ default: // center
+ return (dimension - blockSize + labelOpts.padding) / 2;
+ }
+ };
+
+ // Horizontal
+ var isHorizontal = me.isHorizontal();
+ if (isHorizontal) {
+ cursor = {
+ x: me.left + alignmentOffset(legendWidth, lineWidths[0]),
+ y: me.top + labelOpts.padding,
+ line: 0
+ };
+ } else {
+ cursor = {
+ x: me.left + labelOpts.padding,
+ y: me.top + alignmentOffset(legendHeight, columnHeights[0]),
+ line: 0
+ };
+ }
+
+ helpers$1.rtl.overrideTextDirection(me.ctx, opts.textDirection);
+
+ var itemHeight = fontSize + labelOpts.padding;
+ helpers$1.each(me.legendItems, function(legendItem, i) {
+ var textWidth = ctx.measureText(legendItem.text).width;
+ var width = boxWidth + (fontSize / 2) + textWidth;
+ var x = cursor.x;
+ var y = cursor.y;
+
+ rtlHelper.setWidth(me.minSize.width);
+
+ // Use (me.left + me.minSize.width) and (me.top + me.minSize.height)
+ // instead of me.right and me.bottom because me.width and me.height
+ // may have been changed since me.minSize was calculated
+ if (isHorizontal) {
+ if (i > 0 && x + width + labelOpts.padding > me.left + me.minSize.width) {
+ y = cursor.y += itemHeight;
+ cursor.line++;
+ x = cursor.x = me.left + alignmentOffset(legendWidth, lineWidths[cursor.line]);
+ }
+ } else if (i > 0 && y + itemHeight > me.top + me.minSize.height) {
+ x = cursor.x = x + me.columnWidths[cursor.line] + labelOpts.padding;
+ cursor.line++;
+ y = cursor.y = me.top + alignmentOffset(legendHeight, columnHeights[cursor.line]);
+ }
+
+ var realX = rtlHelper.x(x);
+
+ drawLegendBox(realX, y, legendItem);
+
+ hitboxes[i].left = rtlHelper.leftForLtr(realX, hitboxes[i].width);
+ hitboxes[i].top = y;
+
+ // Fill the actual label
+ fillText(realX, y, legendItem, textWidth);
+
+ if (isHorizontal) {
+ cursor.x += width + labelOpts.padding;
+ } else {
+ cursor.y += itemHeight;
+ }
+ });
+
+ helpers$1.rtl.restoreTextDirection(me.ctx, opts.textDirection);
+ },
+
+ /**
+ * @private
+ */
+ _getLegendItemAt: function(x, y) {
+ var me = this;
+ var i, hitBox, lh;
+
+ if (x >= me.left && x <= me.right && y >= me.top && y <= me.bottom) {
+ // See if we are touching one of the dataset boxes
+ lh = me.legendHitBoxes;
+ for (i = 0; i < lh.length; ++i) {
+ hitBox = lh[i];
+
+ if (x >= hitBox.left && x <= hitBox.left + hitBox.width && y >= hitBox.top && y <= hitBox.top + hitBox.height) {
+ // Touching an element
+ return me.legendItems[i];
+ }
+ }
+ }
+
+ return null;
+ },
+
+ /**
+ * Handle an event
+ * @private
+ * @param {IEvent} event - The event to handle
+ */
+ handleEvent: function(e) {
+ var me = this;
+ var opts = me.options;
+ var type = e.type === 'mouseup' ? 'click' : e.type;
+ var hoveredItem;
+
+ if (type === 'mousemove') {
+ if (!opts.onHover && !opts.onLeave) {
+ return;
+ }
+ } else if (type === 'click') {
+ if (!opts.onClick) {
+ return;
+ }
+ } else {
+ return;
+ }
+
+ // Chart event already has relative position in it
+ hoveredItem = me._getLegendItemAt(e.x, e.y);
+
+ if (type === 'click') {
+ if (hoveredItem && opts.onClick) {
+ // use e.native for backwards compatibility
+ opts.onClick.call(me, e.native, hoveredItem);
+ }
+ } else {
+ if (opts.onLeave && hoveredItem !== me._hoveredItem) {
+ if (me._hoveredItem) {
+ opts.onLeave.call(me, e.native, me._hoveredItem);
+ }
+ me._hoveredItem = hoveredItem;
+ }
+
+ if (opts.onHover && hoveredItem) {
+ // use e.native for backwards compatibility
+ opts.onHover.call(me, e.native, hoveredItem);
+ }
+ }
+ }
+});
+
+function createNewLegendAndAttach(chart, legendOpts) {
+ var legend = new Legend({
+ ctx: chart.ctx,
+ options: legendOpts,
+ chart: chart
+ });
+
+ core_layouts.configure(chart, legend, legendOpts);
+ core_layouts.addBox(chart, legend);
+ chart.legend = legend;
+}
+
+var plugin_legend = {
+ id: 'legend',
+
+ /**
+ * Backward compatibility: since 2.1.5, the legend is registered as a plugin, making
+ * Chart.Legend obsolete. To avoid a breaking change, we export the Legend as part of
+ * the plugin, which one will be re-exposed in the chart.js file.
+ * https://github.com/chartjs/Chart.js/pull/2640
+ * @private
+ */
+ _element: Legend,
+
+ beforeInit: function(chart) {
+ var legendOpts = chart.options.legend;
+
+ if (legendOpts) {
+ createNewLegendAndAttach(chart, legendOpts);
+ }
+ },
+
+ beforeUpdate: function(chart) {
+ var legendOpts = chart.options.legend;
+ var legend = chart.legend;
+
+ if (legendOpts) {
+ helpers$1.mergeIf(legendOpts, core_defaults.global.legend);
+
+ if (legend) {
+ core_layouts.configure(chart, legend, legendOpts);
+ legend.options = legendOpts;
+ } else {
+ createNewLegendAndAttach(chart, legendOpts);
+ }
+ } else if (legend) {
+ core_layouts.removeBox(chart, legend);
+ delete chart.legend;
+ }
+ },
+
+ afterEvent: function(chart, e) {
+ var legend = chart.legend;
+ if (legend) {
+ legend.handleEvent(e);
+ }
+ }
+}; + +var noop$2 = helpers$1.noop;
+
+core_defaults._set('global', {
+ title: {
+ display: false,
+ fontStyle: 'bold',
+ fullWidth: true,
+ padding: 10,
+ position: 'top',
+ text: '',
+ weight: 2000 // by default greater than legend (1000) to be above
+ }
+});
+
+/**
+ * IMPORTANT: this class is exposed publicly as Chart.Legend, backward compatibility required!
+ */
+var Title = core_element.extend({
+ initialize: function(config) {
+ var me = this;
+ helpers$1.extend(me, config);
+
+ // Contains hit boxes for each dataset (in dataset order)
+ me.legendHitBoxes = [];
+ },
+
+ // These methods are ordered by lifecycle. Utilities then follow.
+
+ beforeUpdate: noop$2,
+ update: function(maxWidth, maxHeight, margins) {
+ var me = this;
+
+ // Update Lifecycle - Probably don't want to ever extend or overwrite this function ;)
+ me.beforeUpdate();
+
+ // Absorb the master measurements
+ me.maxWidth = maxWidth;
+ me.maxHeight = maxHeight;
+ me.margins = margins;
+
+ // Dimensions
+ me.beforeSetDimensions();
+ me.setDimensions();
+ me.afterSetDimensions();
+ // Labels
+ me.beforeBuildLabels();
+ me.buildLabels();
+ me.afterBuildLabels();
+
+ // Fit
+ me.beforeFit();
+ me.fit();
+ me.afterFit();
+ //
+ me.afterUpdate();
+
+ return me.minSize;
+
+ },
+ afterUpdate: noop$2,
+
+ //
+
+ beforeSetDimensions: noop$2,
+ setDimensions: function() {
+ var me = this;
+ // Set the unconstrained dimension before label rotation
+ if (me.isHorizontal()) {
+ // Reset position before calculating rotation
+ me.width = me.maxWidth;
+ me.left = 0;
+ me.right = me.width;
+ } else {
+ me.height = me.maxHeight;
+
+ // Reset position before calculating rotation
+ me.top = 0;
+ me.bottom = me.height;
+ }
+
+ // Reset padding
+ me.paddingLeft = 0;
+ me.paddingTop = 0;
+ me.paddingRight = 0;
+ me.paddingBottom = 0;
+
+ // Reset minSize
+ me.minSize = {
+ width: 0,
+ height: 0
+ };
+ },
+ afterSetDimensions: noop$2,
+
+ //
+
+ beforeBuildLabels: noop$2,
+ buildLabels: noop$2,
+ afterBuildLabels: noop$2,
+
+ //
+
+ beforeFit: noop$2,
+ fit: function() {
+ var me = this;
+ var opts = me.options;
+ var minSize = me.minSize = {};
+ var isHorizontal = me.isHorizontal();
+ var lineCount, textSize;
+
+ if (!opts.display) {
+ me.width = minSize.width = me.height = minSize.height = 0;
+ return;
+ }
+
+ lineCount = helpers$1.isArray(opts.text) ? opts.text.length : 1;
+ textSize = lineCount * helpers$1.options._parseFont(opts).lineHeight + opts.padding * 2;
+
+ me.width = minSize.width = isHorizontal ? me.maxWidth : textSize;
+ me.height = minSize.height = isHorizontal ? textSize : me.maxHeight;
+ },
+ afterFit: noop$2,
+
+ // Shared Methods
+ isHorizontal: function() {
+ var pos = this.options.position;
+ return pos === 'top' || pos === 'bottom';
+ },
+
+ // Actually draw the title block on the canvas
+ draw: function() {
+ var me = this;
+ var ctx = me.ctx;
+ var opts = me.options;
+
+ if (!opts.display) {
+ return;
+ }
+
+ var fontOpts = helpers$1.options._parseFont(opts);
+ var lineHeight = fontOpts.lineHeight;
+ var offset = lineHeight / 2 + opts.padding;
+ var rotation = 0;
+ var top = me.top;
+ var left = me.left;
+ var bottom = me.bottom;
+ var right = me.right;
+ var maxWidth, titleX, titleY;
+
+ ctx.fillStyle = helpers$1.valueOrDefault(opts.fontColor, core_defaults.global.defaultFontColor); // render in correct colour
+ ctx.font = fontOpts.string;
+
+ // Horizontal
+ if (me.isHorizontal()) {
+ titleX = left + ((right - left) / 2); // midpoint of the width
+ titleY = top + offset;
+ maxWidth = right - left;
+ } else {
+ titleX = opts.position === 'left' ? left + offset : right - offset;
+ titleY = top + ((bottom - top) / 2);
+ maxWidth = bottom - top;
+ rotation = Math.PI * (opts.position === 'left' ? -0.5 : 0.5);
+ }
+
+ ctx.save();
+ ctx.translate(titleX, titleY);
+ ctx.rotate(rotation);
+ ctx.textAlign = 'center';
+ ctx.textBaseline = 'middle';
+
+ var text = opts.text;
+ if (helpers$1.isArray(text)) {
+ var y = 0;
+ for (var i = 0; i < text.length; ++i) {
+ ctx.fillText(text[i], 0, y, maxWidth);
+ y += lineHeight;
+ }
+ } else {
+ ctx.fillText(text, 0, 0, maxWidth);
+ }
+
+ ctx.restore();
+ }
+});
+
+function createNewTitleBlockAndAttach(chart, titleOpts) {
+ var title = new Title({
+ ctx: chart.ctx,
+ options: titleOpts,
+ chart: chart
+ });
+
+ core_layouts.configure(chart, title, titleOpts);
+ core_layouts.addBox(chart, title);
+ chart.titleBlock = title;
+}
+
+var plugin_title = {
+ id: 'title',
+
+ /**
+ * Backward compatibility: since 2.1.5, the title is registered as a plugin, making
+ * Chart.Title obsolete. To avoid a breaking change, we export the Title as part of
+ * the plugin, which one will be re-exposed in the chart.js file.
+ * https://github.com/chartjs/Chart.js/pull/2640
+ * @private
+ */
+ _element: Title,
+
+ beforeInit: function(chart) {
+ var titleOpts = chart.options.title;
+
+ if (titleOpts) {
+ createNewTitleBlockAndAttach(chart, titleOpts);
+ }
+ },
+
+ beforeUpdate: function(chart) {
+ var titleOpts = chart.options.title;
+ var titleBlock = chart.titleBlock;
+
+ if (titleOpts) {
+ helpers$1.mergeIf(titleOpts, core_defaults.global.title);
+
+ if (titleBlock) {
+ core_layouts.configure(chart, titleBlock, titleOpts);
+ titleBlock.options = titleOpts;
+ } else {
+ createNewTitleBlockAndAttach(chart, titleOpts);
+ }
+ } else if (titleBlock) {
+ core_layouts.removeBox(chart, titleBlock);
+ delete chart.titleBlock;
+ }
+ }
+}; + +var plugins = {};
+var filler = plugin_filler;
+var legend = plugin_legend;
+var title = plugin_title; +plugins.filler = filler; +plugins.legend = legend; +plugins.title = title; + +/**
+ * @namespace Chart
+ */
+
+
+core_controller.helpers = helpers$1;
+
+// @todo dispatch these helpers into appropriated helpers/helpers.* file and write unit tests!
+core_helpers();
+
+core_controller._adapters = core_adapters;
+core_controller.Animation = core_animation;
+core_controller.animationService = core_animations;
+core_controller.controllers = controllers;
+core_controller.DatasetController = core_datasetController;
+core_controller.defaults = core_defaults;
+core_controller.Element = core_element;
+core_controller.elements = elements;
+core_controller.Interaction = core_interaction;
+core_controller.layouts = core_layouts;
+core_controller.platform = platform;
+core_controller.plugins = core_plugins;
+core_controller.Scale = core_scale;
+core_controller.scaleService = core_scaleService;
+core_controller.Ticks = core_ticks;
+core_controller.Tooltip = core_tooltip;
+
+// Register built-in scales
+
+core_controller.helpers.each(scales, function(scale, type) {
+ core_controller.scaleService.registerScaleType(type, scale, scale._defaults);
+});
+
+// Load to register built-in adapters (as side effects)
+
+
+// Loading built-in plugins
+
+for (var k in plugins) {
+ if (plugins.hasOwnProperty(k)) {
+ core_controller.plugins.register(plugins[k]);
+ }
+}
+
+core_controller.platform.initialize();
+
+var src = core_controller;
+if (typeof window !== 'undefined') {
+ window.Chart = core_controller;
+}
+
+// DEPRECATIONS
+
+/**
+ * Provided for backward compatibility, not available anymore
+ * @namespace Chart.Chart
+ * @deprecated since version 2.8.0
+ * @todo remove at version 3
+ * @private
+ */
+core_controller.Chart = core_controller;
+
+/**
+ * Provided for backward compatibility, not available anymore
+ * @namespace Chart.Legend
+ * @deprecated since version 2.1.5
+ * @todo remove at version 3
+ * @private
+ */
+core_controller.Legend = plugins.legend._element;
+
+/**
+ * Provided for backward compatibility, not available anymore
+ * @namespace Chart.Title
+ * @deprecated since version 2.1.5
+ * @todo remove at version 3
+ * @private
+ */
+core_controller.Title = plugins.title._element;
+
+/**
+ * Provided for backward compatibility, use Chart.plugins instead
+ * @namespace Chart.pluginService
+ * @deprecated since version 2.1.5
+ * @todo remove at version 3
+ * @private
+ */
+core_controller.pluginService = core_controller.plugins;
+
+/**
+ * Provided for backward compatibility, inheriting from Chart.PlugingBase has no
+ * effect, instead simply create/register plugins via plain JavaScript objects.
+ * @interface Chart.PluginBase
+ * @deprecated since version 2.5.0
+ * @todo remove at version 3
+ * @private
+ */
+core_controller.PluginBase = core_controller.Element.extend({});
+
+/**
+ * Provided for backward compatibility, use Chart.helpers.canvas instead.
+ * @namespace Chart.canvasHelpers
+ * @deprecated since version 2.6.0
+ * @todo remove at version 3
+ * @private
+ */
+core_controller.canvasHelpers = core_controller.helpers.canvas;
+
+/**
+ * Provided for backward compatibility, use Chart.layouts instead.
+ * @namespace Chart.layoutService
+ * @deprecated since version 2.7.3
+ * @todo remove at version 3
+ * @private
+ */
+core_controller.layoutService = core_controller.layouts;
+
+/**
+ * Provided for backward compatibility, not available anymore.
+ * @namespace Chart.LinearScaleBase
+ * @deprecated since version 2.8
+ * @todo remove at version 3
+ * @private
+ */
+core_controller.LinearScaleBase = scale_linearbase;
+
+/**
+ * Provided for backward compatibility, instead we should create a new Chart
+ * by setting the type in the config (`new Chart(id, {type: '{chart-type}'}`).
+ * @deprecated since version 2.8.0
+ * @todo remove at version 3
+ */
+core_controller.helpers.each(
+ [
+ 'Bar',
+ 'Bubble',
+ 'Doughnut',
+ 'Line',
+ 'PolarArea',
+ 'Radar',
+ 'Scatter'
+ ],
+ function(klass) {
+ core_controller[klass] = function(ctx, cfg) {
+ return new core_controller(ctx, core_controller.helpers.merge(cfg || {}, {
+ type: klass.charAt(0).toLowerCase() + klass.slice(1)
+ }));
+ };
+ }
+); + +return src; + +}))); |