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portal-oddajanje-solar/static/chart.js
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2021-08-22 19:07:19 +02:00

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/*!
* Chart.js v3.5.1
* https://www.chartjs.org
* (c) 2021 Chart.js Contributors
* Released under the MIT License
*/
(function (global, factory) {
typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
typeof define === 'function' && define.amd ? define(factory) :
(global = typeof globalThis !== 'undefined' ? globalThis : global || self, global.Chart = factory());
}(this, (function () { 'use strict';
function fontString(pixelSize, fontStyle, fontFamily) {
return fontStyle + ' ' + pixelSize + 'px ' + fontFamily;
}
const requestAnimFrame = (function() {
if (typeof window === 'undefined') {
return function(callback) {
return callback();
};
}
return window.requestAnimationFrame;
}());
function throttled(fn, thisArg, updateFn) {
const updateArgs = updateFn || ((args) => Array.prototype.slice.call(args));
let ticking = false;
let args = [];
return function(...rest) {
args = updateArgs(rest);
if (!ticking) {
ticking = true;
requestAnimFrame.call(window, () => {
ticking = false;
fn.apply(thisArg, args);
});
}
};
}
function debounce(fn, delay) {
let timeout;
return function() {
if (delay) {
clearTimeout(timeout);
timeout = setTimeout(fn, delay);
} else {
fn();
}
return delay;
};
}
const _toLeftRightCenter = (align) => align === 'start' ? 'left' : align === 'end' ? 'right' : 'center';
const _alignStartEnd = (align, start, end) => align === 'start' ? start : align === 'end' ? end : (start + end) / 2;
const _textX = (align, left, right, rtl) => {
const check = rtl ? 'left' : 'right';
return align === check ? right : align === 'center' ? (left + right) / 2 : left;
};
class Animator {
constructor() {
this._request = null;
this._charts = new Map();
this._running = false;
this._lastDate = undefined;
}
_notify(chart, anims, date, type) {
const callbacks = anims.listeners[type];
const numSteps = anims.duration;
callbacks.forEach(fn => fn({
chart,
initial: anims.initial,
numSteps,
currentStep: Math.min(date - anims.start, numSteps)
}));
}
_refresh() {
const me = this;
if (me._request) {
return;
}
me._running = true;
me._request = requestAnimFrame.call(window, () => {
me._update();
me._request = null;
if (me._running) {
me._refresh();
}
});
}
_update(date = Date.now()) {
const me = this;
let remaining = 0;
me._charts.forEach((anims, chart) => {
if (!anims.running || !anims.items.length) {
return;
}
const items = anims.items;
let i = items.length - 1;
let draw = false;
let item;
for (; i >= 0; --i) {
item = items[i];
if (item._active) {
if (item._total > anims.duration) {
anims.duration = item._total;
}
item.tick(date);
draw = true;
} else {
items[i] = items[items.length - 1];
items.pop();
}
}
if (draw) {
chart.draw();
me._notify(chart, anims, date, 'progress');
}
if (!items.length) {
anims.running = false;
me._notify(chart, anims, date, 'complete');
anims.initial = false;
}
remaining += items.length;
});
me._lastDate = date;
if (remaining === 0) {
me._running = false;
}
}
_getAnims(chart) {
const charts = this._charts;
let anims = charts.get(chart);
if (!anims) {
anims = {
running: false,
initial: true,
items: [],
listeners: {
complete: [],
progress: []
}
};
charts.set(chart, anims);
}
return anims;
}
listen(chart, event, cb) {
this._getAnims(chart).listeners[event].push(cb);
}
add(chart, items) {
if (!items || !items.length) {
return;
}
this._getAnims(chart).items.push(...items);
}
has(chart) {
return this._getAnims(chart).items.length > 0;
}
start(chart) {
const anims = this._charts.get(chart);
if (!anims) {
return;
}
anims.running = true;
anims.start = Date.now();
anims.duration = anims.items.reduce((acc, cur) => Math.max(acc, cur._duration), 0);
this._refresh();
}
running(chart) {
if (!this._running) {
return false;
}
const anims = this._charts.get(chart);
if (!anims || !anims.running || !anims.items.length) {
return false;
}
return true;
}
stop(chart) {
const anims = this._charts.get(chart);
if (!anims || !anims.items.length) {
return;
}
const items = anims.items;
let i = items.length - 1;
for (; i >= 0; --i) {
items[i].cancel();
}
anims.items = [];
this._notify(chart, anims, Date.now(), 'complete');
}
remove(chart) {
return this._charts.delete(chart);
}
}
var animator = new Animator();
/*!
* @kurkle/color v0.1.9
* https://github.com/kurkle/color#readme
* (c) 2020 Jukka Kurkela
* Released under the MIT License
*/
const map$1 = {0: 0, 1: 1, 2: 2, 3: 3, 4: 4, 5: 5, 6: 6, 7: 7, 8: 8, 9: 9, A: 10, B: 11, C: 12, D: 13, E: 14, F: 15, a: 10, b: 11, c: 12, d: 13, e: 14, f: 15};
const hex = '0123456789ABCDEF';
const h1 = (b) => hex[b & 0xF];
const h2 = (b) => hex[(b & 0xF0) >> 4] + hex[b & 0xF];
const eq = (b) => (((b & 0xF0) >> 4) === (b & 0xF));
function isShort(v) {
return eq(v.r) && eq(v.g) && eq(v.b) && eq(v.a);
}
function hexParse(str) {
var len = str.length;
var ret;
if (str[0] === '#') {
if (len === 4 || len === 5) {
ret = {
r: 255 & map$1[str[1]] * 17,
g: 255 & map$1[str[2]] * 17,
b: 255 & map$1[str[3]] * 17,
a: len === 5 ? map$1[str[4]] * 17 : 255
};
} else if (len === 7 || len === 9) {
ret = {
r: map$1[str[1]] << 4 | map$1[str[2]],
g: map$1[str[3]] << 4 | map$1[str[4]],
b: map$1[str[5]] << 4 | map$1[str[6]],
a: len === 9 ? (map$1[str[7]] << 4 | map$1[str[8]]) : 255
};
}
}
return ret;
}
function hexString(v) {
var f = isShort(v) ? h1 : h2;
return v
? '#' + f(v.r) + f(v.g) + f(v.b) + (v.a < 255 ? f(v.a) : '')
: v;
}
function round(v) {
return v + 0.5 | 0;
}
const lim = (v, l, h) => Math.max(Math.min(v, h), l);
function p2b(v) {
return lim(round(v * 2.55), 0, 255);
}
function n2b(v) {
return lim(round(v * 255), 0, 255);
}
function b2n(v) {
return lim(round(v / 2.55) / 100, 0, 1);
}
function n2p(v) {
return lim(round(v * 100), 0, 100);
}
const RGB_RE = /^rgba?\(\s*([-+.\d]+)(%)?[\s,]+([-+.e\d]+)(%)?[\s,]+([-+.e\d]+)(%)?(?:[\s,/]+([-+.e\d]+)(%)?)?\s*\)$/;
function rgbParse(str) {
const m = RGB_RE.exec(str);
let a = 255;
let r, g, b;
if (!m) {
return;
}
if (m[7] !== r) {
const v = +m[7];
a = 255 & (m[8] ? p2b(v) : v * 255);
}
r = +m[1];
g = +m[3];
b = +m[5];
r = 255 & (m[2] ? p2b(r) : r);
g = 255 & (m[4] ? p2b(g) : g);
b = 255 & (m[6] ? p2b(b) : b);
return {
r: r,
g: g,
b: b,
a: a
};
}
function rgbString(v) {
return v && (
v.a < 255
? `rgba(${v.r}, ${v.g}, ${v.b}, ${b2n(v.a)})`
: `rgb(${v.r}, ${v.g}, ${v.b})`
);
}
const HUE_RE = /^(hsla?|hwb|hsv)\(\s*([-+.e\d]+)(?:deg)?[\s,]+([-+.e\d]+)%[\s,]+([-+.e\d]+)%(?:[\s,]+([-+.e\d]+)(%)?)?\s*\)$/;
function hsl2rgbn(h, s, l) {
const a = s * Math.min(l, 1 - l);
const f = (n, k = (n + h / 30) % 12) => l - a * Math.max(Math.min(k - 3, 9 - k, 1), -1);
return [f(0), f(8), f(4)];
}
function hsv2rgbn(h, s, v) {
const f = (n, k = (n + h / 60) % 6) => v - v * s * Math.max(Math.min(k, 4 - k, 1), 0);
return [f(5), f(3), f(1)];
}
function hwb2rgbn(h, w, b) {
const rgb = hsl2rgbn(h, 1, 0.5);
let i;
if (w + b > 1) {
i = 1 / (w + b);
w *= i;
b *= i;
}
for (i = 0; i < 3; i++) {
rgb[i] *= 1 - w - b;
rgb[i] += w;
}
return rgb;
}
function rgb2hsl(v) {
const range = 255;
const r = v.r / range;
const g = v.g / range;
const b = v.b / range;
const max = Math.max(r, g, b);
const min = Math.min(r, g, b);
const l = (max + min) / 2;
let h, s, d;
if (max !== min) {
d = max - min;
s = l > 0.5 ? d / (2 - max - min) : d / (max + min);
h = max === r
? ((g - b) / d) + (g < b ? 6 : 0)
: max === g
? (b - r) / d + 2
: (r - g) / d + 4;
h = h * 60 + 0.5;
}
return [h | 0, s || 0, l];
}
function calln(f, a, b, c) {
return (
Array.isArray(a)
? f(a[0], a[1], a[2])
: f(a, b, c)
).map(n2b);
}
function hsl2rgb(h, s, l) {
return calln(hsl2rgbn, h, s, l);
}
function hwb2rgb(h, w, b) {
return calln(hwb2rgbn, h, w, b);
}
function hsv2rgb(h, s, v) {
return calln(hsv2rgbn, h, s, v);
}
function hue(h) {
return (h % 360 + 360) % 360;
}
function hueParse(str) {
const m = HUE_RE.exec(str);
let a = 255;
let v;
if (!m) {
return;
}
if (m[5] !== v) {
a = m[6] ? p2b(+m[5]) : n2b(+m[5]);
}
const h = hue(+m[2]);
const p1 = +m[3] / 100;
const p2 = +m[4] / 100;
if (m[1] === 'hwb') {
v = hwb2rgb(h, p1, p2);
} else if (m[1] === 'hsv') {
v = hsv2rgb(h, p1, p2);
} else {
v = hsl2rgb(h, p1, p2);
}
return {
r: v[0],
g: v[1],
b: v[2],
a: a
};
}
function rotate(v, deg) {
var h = rgb2hsl(v);
h[0] = hue(h[0] + deg);
h = hsl2rgb(h);
v.r = h[0];
v.g = h[1];
v.b = h[2];
}
function hslString(v) {
if (!v) {
return;
}
const a = rgb2hsl(v);
const h = a[0];
const s = n2p(a[1]);
const l = n2p(a[2]);
return v.a < 255
? `hsla(${h}, ${s}%, ${l}%, ${b2n(v.a)})`
: `hsl(${h}, ${s}%, ${l}%)`;
}
const map$1$1 = {
x: 'dark',
Z: 'light',
Y: 're',
X: 'blu',
W: 'gr',
V: 'medium',
U: 'slate',
A: 'ee',
T: 'ol',
S: 'or',
B: 'ra',
C: 'lateg',
D: 'ights',
R: 'in',
Q: 'turquois',
E: 'hi',
P: 'ro',
O: 'al',
N: 'le',
M: 'de',
L: 'yello',
F: 'en',
K: 'ch',
G: 'arks',
H: 'ea',
I: 'ightg',
J: 'wh'
};
const names = {
OiceXe: 'f0f8ff',
antiquewEte: 'faebd7',
aqua: 'ffff',
aquamarRe: '7fffd4',
azuY: 'f0ffff',
beige: 'f5f5dc',
bisque: 'ffe4c4',
black: '0',
blanKedOmond: 'ffebcd',
Xe: 'ff',
XeviTet: '8a2be2',
bPwn: 'a52a2a',
burlywood: 'deb887',
caMtXe: '5f9ea0',
KartYuse: '7fff00',
KocTate: 'd2691e',
cSO: 'ff7f50',
cSnflowerXe: '6495ed',
cSnsilk: 'fff8dc',
crimson: 'dc143c',
cyan: 'ffff',
xXe: '8b',
xcyan: '8b8b',
xgTMnPd: 'b8860b',
xWay: 'a9a9a9',
xgYF: '6400',
xgYy: 'a9a9a9',
xkhaki: 'bdb76b',
xmagFta: '8b008b',
xTivegYF: '556b2f',
xSange: 'ff8c00',
xScEd: '9932cc',
xYd: '8b0000',
xsOmon: 'e9967a',
xsHgYF: '8fbc8f',
xUXe: '483d8b',
xUWay: '2f4f4f',
xUgYy: '2f4f4f',
xQe: 'ced1',
xviTet: '9400d3',
dAppRk: 'ff1493',
dApskyXe: 'bfff',
dimWay: '696969',
dimgYy: '696969',
dodgerXe: '1e90ff',
fiYbrick: 'b22222',
flSOwEte: 'fffaf0',
foYstWAn: '228b22',
fuKsia: 'ff00ff',
gaRsbSo: 'dcdcdc',
ghostwEte: 'f8f8ff',
gTd: 'ffd700',
gTMnPd: 'daa520',
Way: '808080',
gYF: '8000',
gYFLw: 'adff2f',
gYy: '808080',
honeyMw: 'f0fff0',
hotpRk: 'ff69b4',
RdianYd: 'cd5c5c',
Rdigo: '4b0082',
ivSy: 'fffff0',
khaki: 'f0e68c',
lavFMr: 'e6e6fa',
lavFMrXsh: 'fff0f5',
lawngYF: '7cfc00',
NmoncEffon: 'fffacd',
ZXe: 'add8e6',
ZcSO: 'f08080',
Zcyan: 'e0ffff',
ZgTMnPdLw: 'fafad2',
ZWay: 'd3d3d3',
ZgYF: '90ee90',
ZgYy: 'd3d3d3',
ZpRk: 'ffb6c1',
ZsOmon: 'ffa07a',
ZsHgYF: '20b2aa',
ZskyXe: '87cefa',
ZUWay: '778899',
ZUgYy: '778899',
ZstAlXe: 'b0c4de',
ZLw: 'ffffe0',
lime: 'ff00',
limegYF: '32cd32',
lRF: 'faf0e6',
magFta: 'ff00ff',
maPon: '800000',
VaquamarRe: '66cdaa',
VXe: 'cd',
VScEd: 'ba55d3',
VpurpN: '9370db',
VsHgYF: '3cb371',
VUXe: '7b68ee',
VsprRggYF: 'fa9a',
VQe: '48d1cc',
VviTetYd: 'c71585',
midnightXe: '191970',
mRtcYam: 'f5fffa',
mistyPse: 'ffe4e1',
moccasR: 'ffe4b5',
navajowEte: 'ffdead',
navy: '80',
Tdlace: 'fdf5e6',
Tive: '808000',
TivedBb: '6b8e23',
Sange: 'ffa500',
SangeYd: 'ff4500',
ScEd: 'da70d6',
pOegTMnPd: 'eee8aa',
pOegYF: '98fb98',
pOeQe: 'afeeee',
pOeviTetYd: 'db7093',
papayawEp: 'ffefd5',
pHKpuff: 'ffdab9',
peru: 'cd853f',
pRk: 'ffc0cb',
plum: 'dda0dd',
powMrXe: 'b0e0e6',
purpN: '800080',
YbeccapurpN: '663399',
Yd: 'ff0000',
Psybrown: 'bc8f8f',
PyOXe: '4169e1',
saddNbPwn: '8b4513',
sOmon: 'fa8072',
sandybPwn: 'f4a460',
sHgYF: '2e8b57',
sHshell: 'fff5ee',
siFna: 'a0522d',
silver: 'c0c0c0',
skyXe: '87ceeb',
UXe: '6a5acd',
UWay: '708090',
UgYy: '708090',
snow: 'fffafa',
sprRggYF: 'ff7f',
stAlXe: '4682b4',
tan: 'd2b48c',
teO: '8080',
tEstN: 'd8bfd8',
tomato: 'ff6347',
Qe: '40e0d0',
viTet: 'ee82ee',
JHt: 'f5deb3',
wEte: 'ffffff',
wEtesmoke: 'f5f5f5',
Lw: 'ffff00',
LwgYF: '9acd32'
};
function unpack() {
const unpacked = {};
const keys = Object.keys(names);
const tkeys = Object.keys(map$1$1);
let i, j, k, ok, nk;
for (i = 0; i < keys.length; i++) {
ok = nk = keys[i];
for (j = 0; j < tkeys.length; j++) {
k = tkeys[j];
nk = nk.replace(k, map$1$1[k]);
}
k = parseInt(names[ok], 16);
unpacked[nk] = [k >> 16 & 0xFF, k >> 8 & 0xFF, k & 0xFF];
}
return unpacked;
}
let names$1;
function nameParse(str) {
if (!names$1) {
names$1 = unpack();
names$1.transparent = [0, 0, 0, 0];
}
const a = names$1[str.toLowerCase()];
return a && {
r: a[0],
g: a[1],
b: a[2],
a: a.length === 4 ? a[3] : 255
};
}
function modHSL(v, i, ratio) {
if (v) {
let tmp = rgb2hsl(v);
tmp[i] = Math.max(0, Math.min(tmp[i] + tmp[i] * ratio, i === 0 ? 360 : 1));
tmp = hsl2rgb(tmp);
v.r = tmp[0];
v.g = tmp[1];
v.b = tmp[2];
}
}
function clone$1(v, proto) {
return v ? Object.assign(proto || {}, v) : v;
}
function fromObject(input) {
var v = {r: 0, g: 0, b: 0, a: 255};
if (Array.isArray(input)) {
if (input.length >= 3) {
v = {r: input[0], g: input[1], b: input[2], a: 255};
if (input.length > 3) {
v.a = n2b(input[3]);
}
}
} else {
v = clone$1(input, {r: 0, g: 0, b: 0, a: 1});
v.a = n2b(v.a);
}
return v;
}
function functionParse(str) {
if (str.charAt(0) === 'r') {
return rgbParse(str);
}
return hueParse(str);
}
class Color {
constructor(input) {
if (input instanceof Color) {
return input;
}
const type = typeof input;
let v;
if (type === 'object') {
v = fromObject(input);
} else if (type === 'string') {
v = hexParse(input) || nameParse(input) || functionParse(input);
}
this._rgb = v;
this._valid = !!v;
}
get valid() {
return this._valid;
}
get rgb() {
var v = clone$1(this._rgb);
if (v) {
v.a = b2n(v.a);
}
return v;
}
set rgb(obj) {
this._rgb = fromObject(obj);
}
rgbString() {
return this._valid ? rgbString(this._rgb) : this._rgb;
}
hexString() {
return this._valid ? hexString(this._rgb) : this._rgb;
}
hslString() {
return this._valid ? hslString(this._rgb) : this._rgb;
}
mix(color, weight) {
const me = this;
if (color) {
const c1 = me.rgb;
const c2 = color.rgb;
let w2;
const p = weight === w2 ? 0.5 : weight;
const w = 2 * p - 1;
const a = c1.a - c2.a;
const w1 = ((w * a === -1 ? w : (w + a) / (1 + w * a)) + 1) / 2.0;
w2 = 1 - w1;
c1.r = 0xFF & w1 * c1.r + w2 * c2.r + 0.5;
c1.g = 0xFF & w1 * c1.g + w2 * c2.g + 0.5;
c1.b = 0xFF & w1 * c1.b + w2 * c2.b + 0.5;
c1.a = p * c1.a + (1 - p) * c2.a;
me.rgb = c1;
}
return me;
}
clone() {
return new Color(this.rgb);
}
alpha(a) {
this._rgb.a = n2b(a);
return this;
}
clearer(ratio) {
const rgb = this._rgb;
rgb.a *= 1 - ratio;
return this;
}
greyscale() {
const rgb = this._rgb;
const val = round(rgb.r * 0.3 + rgb.g * 0.59 + rgb.b * 0.11);
rgb.r = rgb.g = rgb.b = val;
return this;
}
opaquer(ratio) {
const rgb = this._rgb;
rgb.a *= 1 + ratio;
return this;
}
negate() {
const v = this._rgb;
v.r = 255 - v.r;
v.g = 255 - v.g;
v.b = 255 - v.b;
return this;
}
lighten(ratio) {
modHSL(this._rgb, 2, ratio);
return this;
}
darken(ratio) {
modHSL(this._rgb, 2, -ratio);
return this;
}
saturate(ratio) {
modHSL(this._rgb, 1, ratio);
return this;
}
desaturate(ratio) {
modHSL(this._rgb, 1, -ratio);
return this;
}
rotate(deg) {
rotate(this._rgb, deg);
return this;
}
}
function index_esm(input) {
return new Color(input);
}
const isPatternOrGradient = (value) => value instanceof CanvasGradient || value instanceof CanvasPattern;
function color(value) {
return isPatternOrGradient(value) ? value : index_esm(value);
}
function getHoverColor(value) {
return isPatternOrGradient(value)
? value
: index_esm(value).saturate(0.5).darken(0.1).hexString();
}
function noop() {}
const uid = (function() {
let id = 0;
return function() {
return id++;
};
}());
function isNullOrUndef(value) {
return value === null || typeof value === 'undefined';
}
function isArray(value) {
if (Array.isArray && Array.isArray(value)) {
return true;
}
const type = Object.prototype.toString.call(value);
if (type.substr(0, 7) === '[object' && type.substr(-6) === 'Array]') {
return true;
}
return false;
}
function isObject(value) {
return value !== null && Object.prototype.toString.call(value) === '[object Object]';
}
const isNumberFinite = (value) => (typeof value === 'number' || value instanceof Number) && isFinite(+value);
function finiteOrDefault(value, defaultValue) {
return isNumberFinite(value) ? value : defaultValue;
}
function valueOrDefault(value, defaultValue) {
return typeof value === 'undefined' ? defaultValue : value;
}
const toPercentage = (value, dimension) =>
typeof value === 'string' && value.endsWith('%') ?
parseFloat(value) / 100
: value / dimension;
const toDimension = (value, dimension) =>
typeof value === 'string' && value.endsWith('%') ?
parseFloat(value) / 100 * dimension
: +value;
function callback(fn, args, thisArg) {
if (fn && typeof fn.call === 'function') {
return fn.apply(thisArg, args);
}
}
function each(loopable, fn, thisArg, reverse) {
let i, len, keys;
if (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 (isObject(loopable)) {
keys = Object.keys(loopable);
len = keys.length;
for (i = 0; i < len; i++) {
fn.call(thisArg, loopable[keys[i]], keys[i]);
}
}
}
function _elementsEqual(a0, a1) {
let 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.datasetIndex !== v1.datasetIndex || v0.index !== v1.index) {
return false;
}
}
return true;
}
function clone(source) {
if (isArray(source)) {
return source.map(clone);
}
if (isObject(source)) {
const target = Object.create(null);
const keys = Object.keys(source);
const klen = keys.length;
let k = 0;
for (; k < klen; ++k) {
target[keys[k]] = clone(source[keys[k]]);
}
return target;
}
return source;
}
function isValidKey(key) {
return ['__proto__', 'prototype', 'constructor'].indexOf(key) === -1;
}
function _merger(key, target, source, options) {
if (!isValidKey(key)) {
return;
}
const tval = target[key];
const sval = source[key];
if (isObject(tval) && isObject(sval)) {
merge(tval, sval, options);
} else {
target[key] = clone(sval);
}
}
function merge(target, source, options) {
const sources = isArray(source) ? source : [source];
const ilen = sources.length;
if (!isObject(target)) {
return target;
}
options = options || {};
const merger = options.merger || _merger;
for (let i = 0; i < ilen; ++i) {
source = sources[i];
if (!isObject(source)) {
continue;
}
const keys = Object.keys(source);
for (let k = 0, klen = keys.length; k < klen; ++k) {
merger(keys[k], target, source, options);
}
}
return target;
}
function mergeIf(target, source) {
return merge(target, source, {merger: _mergerIf});
}
function _mergerIf(key, target, source) {
if (!isValidKey(key)) {
return;
}
const tval = target[key];
const sval = source[key];
if (isObject(tval) && isObject(sval)) {
mergeIf(tval, sval);
} else if (!Object.prototype.hasOwnProperty.call(target, key)) {
target[key] = clone(sval);
}
}
function _deprecated(scope, value, previous, current) {
if (value !== undefined) {
console.warn(scope + ': "' + previous +
'" is deprecated. Please use "' + current + '" instead');
}
}
const emptyString = '';
const dot = '.';
function indexOfDotOrLength(key, start) {
const idx = key.indexOf(dot, start);
return idx === -1 ? key.length : idx;
}
function resolveObjectKey(obj, key) {
if (key === emptyString) {
return obj;
}
let pos = 0;
let idx = indexOfDotOrLength(key, pos);
while (obj && idx > pos) {
obj = obj[key.substr(pos, idx - pos)];
pos = idx + 1;
idx = indexOfDotOrLength(key, pos);
}
return obj;
}
function _capitalize(str) {
return str.charAt(0).toUpperCase() + str.slice(1);
}
const defined = (value) => typeof value !== 'undefined';
const isFunction = (value) => typeof value === 'function';
const setsEqual = (a, b) => {
if (a.size !== b.size) {
return false;
}
for (const item of a) {
if (!b.has(item)) {
return false;
}
}
return true;
};
const overrides = Object.create(null);
const descriptors = Object.create(null);
function getScope$1(node, key) {
if (!key) {
return node;
}
const keys = key.split('.');
for (let i = 0, n = keys.length; i < n; ++i) {
const k = keys[i];
node = node[k] || (node[k] = Object.create(null));
}
return node;
}
function set(root, scope, values) {
if (typeof scope === 'string') {
return merge(getScope$1(root, scope), values);
}
return merge(getScope$1(root, ''), scope);
}
class Defaults {
constructor(_descriptors) {
this.animation = undefined;
this.backgroundColor = 'rgba(0,0,0,0.1)';
this.borderColor = 'rgba(0,0,0,0.1)';
this.color = '#666';
this.datasets = {};
this.devicePixelRatio = (context) => context.chart.platform.getDevicePixelRatio();
this.elements = {};
this.events = [
'mousemove',
'mouseout',
'click',
'touchstart',
'touchmove'
];
this.font = {
family: "'Helvetica Neue', 'Helvetica', 'Arial', sans-serif",
size: 12,
style: 'normal',
lineHeight: 1.2,
weight: null
};
this.hover = {};
this.hoverBackgroundColor = (ctx, options) => getHoverColor(options.backgroundColor);
this.hoverBorderColor = (ctx, options) => getHoverColor(options.borderColor);
this.hoverColor = (ctx, options) => getHoverColor(options.color);
this.indexAxis = 'x';
this.interaction = {
mode: 'nearest',
intersect: true
};
this.maintainAspectRatio = true;
this.onHover = null;
this.onClick = null;
this.parsing = true;
this.plugins = {};
this.responsive = true;
this.scale = undefined;
this.scales = {};
this.showLine = true;
this.describe(_descriptors);
}
set(scope, values) {
return set(this, scope, values);
}
get(scope) {
return getScope$1(this, scope);
}
describe(scope, values) {
return set(descriptors, scope, values);
}
override(scope, values) {
return set(overrides, scope, values);
}
route(scope, name, targetScope, targetName) {
const scopeObject = getScope$1(this, scope);
const targetScopeObject = getScope$1(this, targetScope);
const privateName = '_' + name;
Object.defineProperties(scopeObject, {
[privateName]: {
value: scopeObject[name],
writable: true
},
[name]: {
enumerable: true,
get() {
const local = this[privateName];
const target = targetScopeObject[targetName];
if (isObject(local)) {
return Object.assign({}, target, local);
}
return valueOrDefault(local, target);
},
set(value) {
this[privateName] = value;
}
}
});
}
}
var defaults = new Defaults({
_scriptable: (name) => !name.startsWith('on'),
_indexable: (name) => name !== 'events',
hover: {
_fallback: 'interaction'
},
interaction: {
_scriptable: false,
_indexable: false,
}
});
const PI = Math.PI;
const TAU = 2 * PI;
const PITAU = TAU + PI;
const INFINITY = Number.POSITIVE_INFINITY;
const RAD_PER_DEG = PI / 180;
const HALF_PI = PI / 2;
const QUARTER_PI = PI / 4;
const TWO_THIRDS_PI = PI * 2 / 3;
const log10 = Math.log10;
const sign = Math.sign;
function niceNum(range) {
const roundedRange = Math.round(range);
range = almostEquals(range, roundedRange, range / 1000) ? roundedRange : range;
const niceRange = Math.pow(10, Math.floor(log10(range)));
const fraction = range / niceRange;
const niceFraction = fraction <= 1 ? 1 : fraction <= 2 ? 2 : fraction <= 5 ? 5 : 10;
return niceFraction * niceRange;
}
function _factorize(value) {
const result = [];
const sqrt = Math.sqrt(value);
let i;
for (i = 1; i < sqrt; i++) {
if (value % i === 0) {
result.push(i);
result.push(value / i);
}
}
if (sqrt === (sqrt | 0)) {
result.push(sqrt);
}
result.sort((a, b) => a - b).pop();
return result;
}
function isNumber(n) {
return !isNaN(parseFloat(n)) && isFinite(n);
}
function almostEquals(x, y, epsilon) {
return Math.abs(x - y) < epsilon;
}
function almostWhole(x, epsilon) {
const rounded = Math.round(x);
return ((rounded - epsilon) <= x) && ((rounded + epsilon) >= x);
}
function _setMinAndMaxByKey(array, target, property) {
let i, ilen, value;
for (i = 0, ilen = array.length; i < ilen; i++) {
value = array[i][property];
if (!isNaN(value)) {
target.min = Math.min(target.min, value);
target.max = Math.max(target.max, value);
}
}
}
function toRadians(degrees) {
return degrees * (PI / 180);
}
function toDegrees(radians) {
return radians * (180 / PI);
}
function _decimalPlaces(x) {
if (!isNumberFinite(x)) {
return;
}
let e = 1;
let p = 0;
while (Math.round(x * e) / e !== x) {
e *= 10;
p++;
}
return p;
}
function getAngleFromPoint(centrePoint, anglePoint) {
const distanceFromXCenter = anglePoint.x - centrePoint.x;
const distanceFromYCenter = anglePoint.y - centrePoint.y;
const radialDistanceFromCenter = Math.sqrt(distanceFromXCenter * distanceFromXCenter + distanceFromYCenter * distanceFromYCenter);
let angle = Math.atan2(distanceFromYCenter, distanceFromXCenter);
if (angle < (-0.5 * PI)) {
angle += TAU;
}
return {
angle,
distance: radialDistanceFromCenter
};
}
function distanceBetweenPoints(pt1, pt2) {
return Math.sqrt(Math.pow(pt2.x - pt1.x, 2) + Math.pow(pt2.y - pt1.y, 2));
}
function _angleDiff(a, b) {
return (a - b + PITAU) % TAU - PI;
}
function _normalizeAngle(a) {
return (a % TAU + TAU) % TAU;
}
function _angleBetween(angle, start, end, sameAngleIsFullCircle) {
const a = _normalizeAngle(angle);
const s = _normalizeAngle(start);
const e = _normalizeAngle(end);
const angleToStart = _normalizeAngle(s - a);
const angleToEnd = _normalizeAngle(e - a);
const startToAngle = _normalizeAngle(a - s);
const endToAngle = _normalizeAngle(a - e);
return a === s || a === e || (sameAngleIsFullCircle && s === e)
|| (angleToStart > angleToEnd && startToAngle < endToAngle);
}
function _limitValue(value, min, max) {
return Math.max(min, Math.min(max, value));
}
function _int16Range(value) {
return _limitValue(value, -32768, 32767);
}
function toFontString(font) {
if (!font || isNullOrUndef(font.size) || isNullOrUndef(font.family)) {
return null;
}
return (font.style ? font.style + ' ' : '')
+ (font.weight ? font.weight + ' ' : '')
+ font.size + 'px '
+ font.family;
}
function _measureText(ctx, data, gc, longest, string) {
let textWidth = data[string];
if (!textWidth) {
textWidth = data[string] = ctx.measureText(string).width;
gc.push(string);
}
if (textWidth > longest) {
longest = textWidth;
}
return longest;
}
function _longestText(ctx, font, arrayOfThings, cache) {
cache = cache || {};
let data = cache.data = cache.data || {};
let gc = cache.garbageCollect = cache.garbageCollect || [];
if (cache.font !== font) {
data = cache.data = {};
gc = cache.garbageCollect = [];
cache.font = font;
}
ctx.save();
ctx.font = font;
let longest = 0;
const ilen = arrayOfThings.length;
let i, j, jlen, thing, nestedThing;
for (i = 0; i < ilen; i++) {
thing = arrayOfThings[i];
if (thing !== undefined && thing !== null && isArray(thing) !== true) {
longest = _measureText(ctx, data, gc, longest, thing);
} else if (isArray(thing)) {
for (j = 0, jlen = thing.length; j < jlen; j++) {
nestedThing = thing[j];
if (nestedThing !== undefined && nestedThing !== null && !isArray(nestedThing)) {
longest = _measureText(ctx, data, gc, longest, nestedThing);
}
}
}
}
ctx.restore();
const gcLen = gc.length / 2;
if (gcLen > arrayOfThings.length) {
for (i = 0; i < gcLen; i++) {
delete data[gc[i]];
}
gc.splice(0, gcLen);
}
return longest;
}
function _alignPixel(chart, pixel, width) {
const devicePixelRatio = chart.currentDevicePixelRatio;
const halfWidth = width !== 0 ? Math.max(width / 2, 0.5) : 0;
return Math.round((pixel - halfWidth) * devicePixelRatio) / devicePixelRatio + halfWidth;
}
function clearCanvas(canvas, ctx) {
ctx = ctx || canvas.getContext('2d');
ctx.save();
ctx.resetTransform();
ctx.clearRect(0, 0, canvas.width, canvas.height);
ctx.restore();
}
function drawPoint(ctx, options, x, y) {
let type, xOffset, yOffset, size, cornerRadius;
const style = options.pointStyle;
const rotation = options.rotation;
const radius = options.radius;
let 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:
ctx.arc(x, y, radius, 0, TAU);
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':
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;
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;
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();
if (options.borderWidth > 0) {
ctx.stroke();
}
}
function _isPointInArea(point, area, margin) {
margin = margin || 0.5;
return !area || (point && point.x > area.left - margin && point.x < area.right + margin &&
point.y > area.top - margin && point.y < area.bottom + margin);
}
function clipArea(ctx, area) {
ctx.save();
ctx.beginPath();
ctx.rect(area.left, area.top, area.right - area.left, area.bottom - area.top);
ctx.clip();
}
function unclipArea(ctx) {
ctx.restore();
}
function _steppedLineTo(ctx, previous, target, flip, mode) {
if (!previous) {
return ctx.lineTo(target.x, target.y);
}
if (mode === 'middle') {
const midpoint = (previous.x + target.x) / 2.0;
ctx.lineTo(midpoint, previous.y);
ctx.lineTo(midpoint, target.y);
} else if (mode === 'after' !== !!flip) {
ctx.lineTo(previous.x, target.y);
} else {
ctx.lineTo(target.x, previous.y);
}
ctx.lineTo(target.x, target.y);
}
function _bezierCurveTo(ctx, previous, target, flip) {
if (!previous) {
return ctx.lineTo(target.x, target.y);
}
ctx.bezierCurveTo(
flip ? previous.cp1x : previous.cp2x,
flip ? previous.cp1y : previous.cp2y,
flip ? target.cp2x : target.cp1x,
flip ? target.cp2y : target.cp1y,
target.x,
target.y);
}
function renderText(ctx, text, x, y, font, opts = {}) {
const lines = isArray(text) ? text : [text];
const stroke = opts.strokeWidth > 0 && opts.strokeColor !== '';
let i, line;
ctx.save();
ctx.font = font.string;
setRenderOpts(ctx, opts);
for (i = 0; i < lines.length; ++i) {
line = lines[i];
if (stroke) {
if (opts.strokeColor) {
ctx.strokeStyle = opts.strokeColor;
}
if (!isNullOrUndef(opts.strokeWidth)) {
ctx.lineWidth = opts.strokeWidth;
}
ctx.strokeText(line, x, y, opts.maxWidth);
}
ctx.fillText(line, x, y, opts.maxWidth);
decorateText(ctx, x, y, line, opts);
y += font.lineHeight;
}
ctx.restore();
}
function setRenderOpts(ctx, opts) {
if (opts.translation) {
ctx.translate(opts.translation[0], opts.translation[1]);
}
if (!isNullOrUndef(opts.rotation)) {
ctx.rotate(opts.rotation);
}
if (opts.color) {
ctx.fillStyle = opts.color;
}
if (opts.textAlign) {
ctx.textAlign = opts.textAlign;
}
if (opts.textBaseline) {
ctx.textBaseline = opts.textBaseline;
}
}
function decorateText(ctx, x, y, line, opts) {
if (opts.strikethrough || opts.underline) {
const metrics = ctx.measureText(line);
const left = x - metrics.actualBoundingBoxLeft;
const right = x + metrics.actualBoundingBoxRight;
const top = y - metrics.actualBoundingBoxAscent;
const bottom = y + metrics.actualBoundingBoxDescent;
const yDecoration = opts.strikethrough ? (top + bottom) / 2 : bottom;
ctx.strokeStyle = ctx.fillStyle;
ctx.beginPath();
ctx.lineWidth = opts.decorationWidth || 2;
ctx.moveTo(left, yDecoration);
ctx.lineTo(right, yDecoration);
ctx.stroke();
}
}
function addRoundedRectPath(ctx, rect) {
const {x, y, w, h, radius} = rect;
ctx.arc(x + radius.topLeft, y + radius.topLeft, radius.topLeft, -HALF_PI, PI, true);
ctx.lineTo(x, y + h - radius.bottomLeft);
ctx.arc(x + radius.bottomLeft, y + h - radius.bottomLeft, radius.bottomLeft, PI, HALF_PI, true);
ctx.lineTo(x + w - radius.bottomRight, y + h);
ctx.arc(x + w - radius.bottomRight, y + h - radius.bottomRight, radius.bottomRight, HALF_PI, 0, true);
ctx.lineTo(x + w, y + radius.topRight);
ctx.arc(x + w - radius.topRight, y + radius.topRight, radius.topRight, 0, -HALF_PI, true);
ctx.lineTo(x + radius.topLeft, y);
}
function _lookup(table, value, cmp) {
cmp = cmp || ((index) => table[index] < value);
let hi = table.length - 1;
let lo = 0;
let mid;
while (hi - lo > 1) {
mid = (lo + hi) >> 1;
if (cmp(mid)) {
lo = mid;
} else {
hi = mid;
}
}
return {lo, hi};
}
const _lookupByKey = (table, key, value) =>
_lookup(table, value, index => table[index][key] < value);
const _rlookupByKey = (table, key, value) =>
_lookup(table, value, index => table[index][key] >= value);
function _filterBetween(values, min, max) {
let start = 0;
let end = values.length;
while (start < end && values[start] < min) {
start++;
}
while (end > start && values[end - 1] > max) {
end--;
}
return start > 0 || end < values.length
? values.slice(start, end)
: values;
}
const arrayEvents = ['push', 'pop', 'shift', 'splice', 'unshift'];
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((key) => {
const method = '_onData' + _capitalize(key);
const base = array[key];
Object.defineProperty(array, key, {
configurable: true,
enumerable: false,
value(...args) {
const res = base.apply(this, args);
array._chartjs.listeners.forEach((object) => {
if (typeof object[method] === 'function') {
object[method](...args);
}
});
return res;
}
});
});
}
function unlistenArrayEvents(array, listener) {
const stub = array._chartjs;
if (!stub) {
return;
}
const listeners = stub.listeners;
const index = listeners.indexOf(listener);
if (index !== -1) {
listeners.splice(index, 1);
}
if (listeners.length > 0) {
return;
}
arrayEvents.forEach((key) => {
delete array[key];
});
delete array._chartjs;
}
function _arrayUnique(items) {
const set = new Set();
let i, ilen;
for (i = 0, ilen = items.length; i < ilen; ++i) {
set.add(items[i]);
}
if (set.size === ilen) {
return items;
}
return Array.from(set);
}
function _isDomSupported() {
return typeof window !== 'undefined' && typeof document !== 'undefined';
}
function _getParentNode(domNode) {
let parent = domNode.parentNode;
if (parent && parent.toString() === '[object ShadowRoot]') {
parent = parent.host;
}
return parent;
}
function parseMaxStyle(styleValue, node, parentProperty) {
let valueInPixels;
if (typeof styleValue === 'string') {
valueInPixels = parseInt(styleValue, 10);
if (styleValue.indexOf('%') !== -1) {
valueInPixels = valueInPixels / 100 * node.parentNode[parentProperty];
}
} else {
valueInPixels = styleValue;
}
return valueInPixels;
}
const getComputedStyle = (element) => window.getComputedStyle(element, null);
function getStyle(el, property) {
return getComputedStyle(el).getPropertyValue(property);
}
const positions = ['top', 'right', 'bottom', 'left'];
function getPositionedStyle(styles, style, suffix) {
const result = {};
suffix = suffix ? '-' + suffix : '';
for (let i = 0; i < 4; i++) {
const pos = positions[i];
result[pos] = parseFloat(styles[style + '-' + pos + suffix]) || 0;
}
result.width = result.left + result.right;
result.height = result.top + result.bottom;
return result;
}
const useOffsetPos = (x, y, target) => (x > 0 || y > 0) && (!target || !target.shadowRoot);
function getCanvasPosition(evt, canvas) {
const e = evt.native || evt;
const touches = e.touches;
const source = touches && touches.length ? touches[0] : e;
const {offsetX, offsetY} = source;
let box = false;
let x, y;
if (useOffsetPos(offsetX, offsetY, e.target)) {
x = offsetX;
y = offsetY;
} else {
const rect = canvas.getBoundingClientRect();
x = source.clientX - rect.left;
y = source.clientY - rect.top;
box = true;
}
return {x, y, box};
}
function getRelativePosition$1(evt, chart) {
const {canvas, currentDevicePixelRatio} = chart;
const style = getComputedStyle(canvas);
const borderBox = style.boxSizing === 'border-box';
const paddings = getPositionedStyle(style, 'padding');
const borders = getPositionedStyle(style, 'border', 'width');
const {x, y, box} = getCanvasPosition(evt, canvas);
const xOffset = paddings.left + (box && borders.left);
const yOffset = paddings.top + (box && borders.top);
let {width, height} = chart;
if (borderBox) {
width -= paddings.width + borders.width;
height -= paddings.height + borders.height;
}
return {
x: Math.round((x - xOffset) / width * canvas.width / currentDevicePixelRatio),
y: Math.round((y - yOffset) / height * canvas.height / currentDevicePixelRatio)
};
}
function getContainerSize(canvas, width, height) {
let maxWidth, maxHeight;
if (width === undefined || height === undefined) {
const container = _getParentNode(canvas);
if (!container) {
width = canvas.clientWidth;
height = canvas.clientHeight;
} else {
const rect = container.getBoundingClientRect();
const containerStyle = getComputedStyle(container);
const containerBorder = getPositionedStyle(containerStyle, 'border', 'width');
const containerPadding = getPositionedStyle(containerStyle, 'padding');
width = rect.width - containerPadding.width - containerBorder.width;
height = rect.height - containerPadding.height - containerBorder.height;
maxWidth = parseMaxStyle(containerStyle.maxWidth, container, 'clientWidth');
maxHeight = parseMaxStyle(containerStyle.maxHeight, container, 'clientHeight');
}
}
return {
width,
height,
maxWidth: maxWidth || INFINITY,
maxHeight: maxHeight || INFINITY
};
}
const round1 = v => Math.round(v * 10) / 10;
function getMaximumSize(canvas, bbWidth, bbHeight, aspectRatio) {
const style = getComputedStyle(canvas);
const margins = getPositionedStyle(style, 'margin');
const maxWidth = parseMaxStyle(style.maxWidth, canvas, 'clientWidth') || INFINITY;
const maxHeight = parseMaxStyle(style.maxHeight, canvas, 'clientHeight') || INFINITY;
const containerSize = getContainerSize(canvas, bbWidth, bbHeight);
let {width, height} = containerSize;
if (style.boxSizing === 'content-box') {
const borders = getPositionedStyle(style, 'border', 'width');
const paddings = getPositionedStyle(style, 'padding');
width -= paddings.width + borders.width;
height -= paddings.height + borders.height;
}
width = Math.max(0, width - margins.width);
height = Math.max(0, aspectRatio ? Math.floor(width / aspectRatio) : height - margins.height);
width = round1(Math.min(width, maxWidth, containerSize.maxWidth));
height = round1(Math.min(height, maxHeight, containerSize.maxHeight));
if (width && !height) {
height = round1(width / 2);
}
return {
width,
height
};
}
function retinaScale(chart, forceRatio, forceStyle) {
const pixelRatio = forceRatio || 1;
const deviceHeight = Math.floor(chart.height * pixelRatio);
const deviceWidth = Math.floor(chart.width * pixelRatio);
chart.height = deviceHeight / pixelRatio;
chart.width = deviceWidth / pixelRatio;
const canvas = chart.canvas;
if (canvas.style && (forceStyle || (!canvas.style.height && !canvas.style.width))) {
canvas.style.height = `${chart.height}px`;
canvas.style.width = `${chart.width}px`;
}
if (chart.currentDevicePixelRatio !== pixelRatio
|| canvas.height !== deviceHeight
|| canvas.width !== deviceWidth) {
chart.currentDevicePixelRatio = pixelRatio;
canvas.height = deviceHeight;
canvas.width = deviceWidth;
chart.ctx.setTransform(pixelRatio, 0, 0, pixelRatio, 0, 0);
return true;
}
return false;
}
const supportsEventListenerOptions = (function() {
let passiveSupported = false;
try {
const options = {
get passive() {
passiveSupported = true;
return false;
}
};
window.addEventListener('test', null, options);
window.removeEventListener('test', null, options);
} catch (e) {
}
return passiveSupported;
}());
function readUsedSize(element, property) {
const value = getStyle(element, property);
const matches = value && value.match(/^(\d+)(\.\d+)?px$/);
return matches ? +matches[1] : undefined;
}
function getRelativePosition(e, chart) {
if ('native' in e) {
return {
x: e.x,
y: e.y
};
}
return getRelativePosition$1(e, chart);
}
function evaluateAllVisibleItems(chart, handler) {
const metasets = chart.getSortedVisibleDatasetMetas();
let index, data, element;
for (let i = 0, ilen = metasets.length; i < ilen; ++i) {
({index, data} = metasets[i]);
for (let j = 0, jlen = data.length; j < jlen; ++j) {
element = data[j];
if (!element.skip) {
handler(element, index, j);
}
}
}
}
function binarySearch(metaset, axis, value, intersect) {
const {controller, data, _sorted} = metaset;
const iScale = controller._cachedMeta.iScale;
if (iScale && axis === iScale.axis && _sorted && data.length) {
const lookupMethod = iScale._reversePixels ? _rlookupByKey : _lookupByKey;
if (!intersect) {
return lookupMethod(data, axis, value);
} else if (controller._sharedOptions) {
const el = data[0];
const range = typeof el.getRange === 'function' && el.getRange(axis);
if (range) {
const start = lookupMethod(data, axis, value - range);
const end = lookupMethod(data, axis, value + range);
return {lo: start.lo, hi: end.hi};
}
}
}
return {lo: 0, hi: data.length - 1};
}
function optimizedEvaluateItems(chart, axis, position, handler, intersect) {
const metasets = chart.getSortedVisibleDatasetMetas();
const value = position[axis];
for (let i = 0, ilen = metasets.length; i < ilen; ++i) {
const {index, data} = metasets[i];
const {lo, hi} = binarySearch(metasets[i], axis, value, intersect);
for (let j = lo; j <= hi; ++j) {
const element = data[j];
if (!element.skip) {
handler(element, index, j);
}
}
}
}
function getDistanceMetricForAxis(axis) {
const useX = axis.indexOf('x') !== -1;
const useY = axis.indexOf('y') !== -1;
return function(pt1, pt2) {
const deltaX = useX ? Math.abs(pt1.x - pt2.x) : 0;
const deltaY = useY ? Math.abs(pt1.y - pt2.y) : 0;
return Math.sqrt(Math.pow(deltaX, 2) + Math.pow(deltaY, 2));
};
}
function getIntersectItems(chart, position, axis, useFinalPosition) {
const items = [];
if (!_isPointInArea(position, chart.chartArea, chart._minPadding)) {
return items;
}
const evaluationFunc = function(element, datasetIndex, index) {
if (element.inRange(position.x, position.y, useFinalPosition)) {
items.push({element, datasetIndex, index});
}
};
optimizedEvaluateItems(chart, axis, position, evaluationFunc, true);
return items;
}
function getNearestItems(chart, position, axis, intersect, useFinalPosition) {
const distanceMetric = getDistanceMetricForAxis(axis);
let minDistance = Number.POSITIVE_INFINITY;
let items = [];
if (!_isPointInArea(position, chart.chartArea, chart._minPadding)) {
return items;
}
const evaluationFunc = function(element, datasetIndex, index) {
if (intersect && !element.inRange(position.x, position.y, useFinalPosition)) {
return;
}
const center = element.getCenterPoint(useFinalPosition);
if (!_isPointInArea(center, chart.chartArea, chart._minPadding) && !element.inRange(position.x, position.y, useFinalPosition)) {
return;
}
const distance = distanceMetric(position, center);
if (distance < minDistance) {
items = [{element, datasetIndex, index}];
minDistance = distance;
} else if (distance === minDistance) {
items.push({element, datasetIndex, index});
}
};
optimizedEvaluateItems(chart, axis, position, evaluationFunc);
return items;
}
function getAxisItems(chart, e, options, useFinalPosition) {
const position = getRelativePosition(e, chart);
const items = [];
const axis = options.axis;
const rangeMethod = axis === 'x' ? 'inXRange' : 'inYRange';
let intersectsItem = false;
evaluateAllVisibleItems(chart, (element, datasetIndex, index) => {
if (element[rangeMethod](position[axis], useFinalPosition)) {
items.push({element, datasetIndex, index});
}
if (element.inRange(position.x, position.y, useFinalPosition)) {
intersectsItem = true;
}
});
if (options.intersect && !intersectsItem) {
return [];
}
return items;
}
var Interaction = {
modes: {
index(chart, e, options, useFinalPosition) {
const position = getRelativePosition(e, chart);
const axis = options.axis || 'x';
const items = options.intersect
? getIntersectItems(chart, position, axis, useFinalPosition)
: getNearestItems(chart, position, axis, false, useFinalPosition);
const elements = [];
if (!items.length) {
return [];
}
chart.getSortedVisibleDatasetMetas().forEach((meta) => {
const index = items[0].index;
const element = meta.data[index];
if (element && !element.skip) {
elements.push({element, datasetIndex: meta.index, index});
}
});
return elements;
},
dataset(chart, e, options, useFinalPosition) {
const position = getRelativePosition(e, chart);
const axis = options.axis || 'xy';
let items = options.intersect
? getIntersectItems(chart, position, axis, useFinalPosition) :
getNearestItems(chart, position, axis, false, useFinalPosition);
if (items.length > 0) {
const datasetIndex = items[0].datasetIndex;
const data = chart.getDatasetMeta(datasetIndex).data;
items = [];
for (let i = 0; i < data.length; ++i) {
items.push({element: data[i], datasetIndex, index: i});
}
}
return items;
},
point(chart, e, options, useFinalPosition) {
const position = getRelativePosition(e, chart);
const axis = options.axis || 'xy';
return getIntersectItems(chart, position, axis, useFinalPosition);
},
nearest(chart, e, options, useFinalPosition) {
const position = getRelativePosition(e, chart);
const axis = options.axis || 'xy';
return getNearestItems(chart, position, axis, options.intersect, useFinalPosition);
},
x(chart, e, options, useFinalPosition) {
options.axis = 'x';
return getAxisItems(chart, e, options, useFinalPosition);
},
y(chart, e, options, useFinalPosition) {
options.axis = 'y';
return getAxisItems(chart, e, options, useFinalPosition);
}
}
};
const LINE_HEIGHT = new RegExp(/^(normal|(\d+(?:\.\d+)?)(px|em|%)?)$/);
const FONT_STYLE = new RegExp(/^(normal|italic|initial|inherit|unset|(oblique( -?[0-9]?[0-9]deg)?))$/);
function toLineHeight(value, size) {
const matches = ('' + value).match(LINE_HEIGHT);
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;
}
const numberOrZero$1 = v => +v || 0;
function _readValueToProps(value, props) {
const ret = {};
const objProps = isObject(props);
const keys = objProps ? Object.keys(props) : props;
const read = isObject(value)
? objProps
? prop => valueOrDefault(value[prop], value[props[prop]])
: prop => value[prop]
: () => value;
for (const prop of keys) {
ret[prop] = numberOrZero$1(read(prop));
}
return ret;
}
function toTRBL(value) {
return _readValueToProps(value, {top: 'y', right: 'x', bottom: 'y', left: 'x'});
}
function toTRBLCorners(value) {
return _readValueToProps(value, ['topLeft', 'topRight', 'bottomLeft', 'bottomRight']);
}
function toPadding(value) {
const obj = toTRBL(value);
obj.width = obj.left + obj.right;
obj.height = obj.top + obj.bottom;
return obj;
}
function toFont(options, fallback) {
options = options || {};
fallback = fallback || defaults.font;
let size = valueOrDefault(options.size, fallback.size);
if (typeof size === 'string') {
size = parseInt(size, 10);
}
let style = valueOrDefault(options.style, fallback.style);
if (style && !('' + style).match(FONT_STYLE)) {
console.warn('Invalid font style specified: "' + style + '"');
style = '';
}
const font = {
family: valueOrDefault(options.family, fallback.family),
lineHeight: toLineHeight(valueOrDefault(options.lineHeight, fallback.lineHeight), size),
size,
style,
weight: valueOrDefault(options.weight, fallback.weight),
string: ''
};
font.string = toFontString(font);
return font;
}
function resolve(inputs, context, index, info) {
let cacheable = true;
let 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 && isArray(value)) {
value = value[index % value.length];
cacheable = false;
}
if (value !== undefined) {
if (info && !cacheable) {
info.cacheable = false;
}
return value;
}
}
}
function _addGrace(minmax, grace) {
const {min, max} = minmax;
return {
min: min - Math.abs(toDimension(grace, min)),
max: max + toDimension(grace, max)
};
}
const STATIC_POSITIONS = ['left', 'top', 'right', 'bottom'];
function filterByPosition(array, position) {
return array.filter(v => v.pos === position);
}
function filterDynamicPositionByAxis(array, axis) {
return array.filter(v => STATIC_POSITIONS.indexOf(v.pos) === -1 && v.box.axis === axis);
}
function sortByWeight(array, reverse) {
return array.sort((a, b) => {
const v0 = reverse ? b : a;
const v1 = reverse ? a : b;
return v0.weight === v1.weight ?
v0.index - v1.index :
v0.weight - v1.weight;
});
}
function wrapBoxes(boxes) {
const layoutBoxes = [];
let i, ilen, box, pos, stack, stackWeight;
for (i = 0, ilen = (boxes || []).length; i < ilen; ++i) {
box = boxes[i];
({position: pos, options: {stack, stackWeight = 1}} = box);
layoutBoxes.push({
index: i,
box,
pos,
horizontal: box.isHorizontal(),
weight: box.weight,
stack: stack && (pos + stack),
stackWeight
});
}
return layoutBoxes;
}
function buildStacks(layouts) {
const stacks = {};
for (const wrap of layouts) {
const {stack, pos, stackWeight} = wrap;
if (!stack || !STATIC_POSITIONS.includes(pos)) {
continue;
}
const _stack = stacks[stack] || (stacks[stack] = {count: 0, placed: 0, weight: 0, size: 0});
_stack.count++;
_stack.weight += stackWeight;
}
return stacks;
}
function setLayoutDims(layouts, params) {
const stacks = buildStacks(layouts);
const {vBoxMaxWidth, hBoxMaxHeight} = params;
let i, ilen, layout;
for (i = 0, ilen = layouts.length; i < ilen; ++i) {
layout = layouts[i];
const {fullSize} = layout.box;
const stack = stacks[layout.stack];
const factor = stack && layout.stackWeight / stack.weight;
if (layout.horizontal) {
layout.width = factor ? factor * vBoxMaxWidth : fullSize && params.availableWidth;
layout.height = hBoxMaxHeight;
} else {
layout.width = vBoxMaxWidth;
layout.height = factor ? factor * hBoxMaxHeight : fullSize && params.availableHeight;
}
}
return stacks;
}
function buildLayoutBoxes(boxes) {
const layoutBoxes = wrapBoxes(boxes);
const fullSize = sortByWeight(layoutBoxes.filter(wrap => wrap.box.fullSize), true);
const left = sortByWeight(filterByPosition(layoutBoxes, 'left'), true);
const right = sortByWeight(filterByPosition(layoutBoxes, 'right'));
const top = sortByWeight(filterByPosition(layoutBoxes, 'top'), true);
const bottom = sortByWeight(filterByPosition(layoutBoxes, 'bottom'));
const centerHorizontal = filterDynamicPositionByAxis(layoutBoxes, 'x');
const centerVertical = filterDynamicPositionByAxis(layoutBoxes, 'y');
return {
fullSize,
leftAndTop: left.concat(top),
rightAndBottom: right.concat(centerVertical).concat(bottom).concat(centerHorizontal),
chartArea: filterByPosition(layoutBoxes, 'chartArea'),
vertical: left.concat(right).concat(centerVertical),
horizontal: top.concat(bottom).concat(centerHorizontal)
};
}
function getCombinedMax(maxPadding, chartArea, a, b) {
return Math.max(maxPadding[a], chartArea[a]) + Math.max(maxPadding[b], chartArea[b]);
}
function updateMaxPadding(maxPadding, boxPadding) {
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);
}
function updateDims(chartArea, params, layout, stacks) {
const {pos, box} = layout;
const maxPadding = chartArea.maxPadding;
if (!isObject(pos)) {
if (layout.size) {
chartArea[pos] -= layout.size;
}
const stack = stacks[layout.stack] || {size: 0, count: 1};
stack.size = Math.max(stack.size, layout.horizontal ? box.height : box.width);
layout.size = stack.size / stack.count;
chartArea[pos] += layout.size;
}
if (box.getPadding) {
updateMaxPadding(maxPadding, box.getPadding());
}
const newWidth = Math.max(0, params.outerWidth - getCombinedMax(maxPadding, chartArea, 'left', 'right'));
const newHeight = Math.max(0, params.outerHeight - getCombinedMax(maxPadding, chartArea, 'top', 'bottom'));
const widthChanged = newWidth !== chartArea.w;
const heightChanged = newHeight !== chartArea.h;
chartArea.w = newWidth;
chartArea.h = newHeight;
return layout.horizontal
? {same: widthChanged, other: heightChanged}
: {same: heightChanged, other: widthChanged};
}
function handleMaxPadding(chartArea) {
const maxPadding = chartArea.maxPadding;
function updatePos(pos) {
const 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) {
const maxPadding = chartArea.maxPadding;
function marginForPositions(positions) {
const margin = {left: 0, top: 0, right: 0, bottom: 0};
positions.forEach((pos) => {
margin[pos] = Math.max(chartArea[pos], maxPadding[pos]);
});
return margin;
}
return horizontal
? marginForPositions(['left', 'right'])
: marginForPositions(['top', 'bottom']);
}
function fitBoxes(boxes, chartArea, params, stacks) {
const refitBoxes = [];
let i, ilen, layout, box, refit, changed;
for (i = 0, ilen = boxes.length, refit = 0; i < ilen; ++i) {
layout = boxes[i];
box = layout.box;
box.update(
layout.width || chartArea.w,
layout.height || chartArea.h,
getMargins(layout.horizontal, chartArea)
);
const {same, other} = updateDims(chartArea, params, layout, stacks);
refit |= same && refitBoxes.length;
changed = changed || other;
if (!box.fullSize) {
refitBoxes.push(layout);
}
}
return refit && fitBoxes(refitBoxes, chartArea, params, stacks) || changed;
}
function setBoxDims(box, left, top, width, height) {
box.top = top;
box.left = left;
box.right = left + width;
box.bottom = top + height;
box.width = width;
box.height = height;
}
function placeBoxes(boxes, chartArea, params, stacks) {
const userPadding = params.padding;
let {x, y} = chartArea;
for (const layout of boxes) {
const box = layout.box;
const stack = stacks[layout.stack] || {count: 1, placed: 0, weight: 1};
const weight = (layout.stackWeight / stack.weight) || 1;
if (layout.horizontal) {
const width = chartArea.w * weight;
const height = stack.size || box.height;
if (defined(stack.start)) {
y = stack.start;
}
if (box.fullSize) {
setBoxDims(box, userPadding.left, y, params.outerWidth - userPadding.right - userPadding.left, height);
} else {
setBoxDims(box, chartArea.left + stack.placed, y, width, height);
}
stack.start = y;
stack.placed += width;
y = box.bottom;
} else {
const height = chartArea.h * weight;
const width = stack.size || box.width;
if (defined(stack.start)) {
x = stack.start;
}
if (box.fullSize) {
setBoxDims(box, x, userPadding.top, width, params.outerHeight - userPadding.bottom - userPadding.top);
} else {
setBoxDims(box, x, chartArea.top + stack.placed, width, height);
}
stack.start = x;
stack.placed += height;
x = box.right;
}
}
chartArea.x = x;
chartArea.y = y;
}
defaults.set('layout', {
padding: {
top: 0,
right: 0,
bottom: 0,
left: 0
}
});
var layouts = {
addBox(chart, item) {
if (!chart.boxes) {
chart.boxes = [];
}
item.fullSize = item.fullSize || false;
item.position = item.position || 'top';
item.weight = item.weight || 0;
item._layers = item._layers || function() {
return [{
z: 0,
draw(chartArea) {
item.draw(chartArea);
}
}];
};
chart.boxes.push(item);
},
removeBox(chart, layoutItem) {
const index = chart.boxes ? chart.boxes.indexOf(layoutItem) : -1;
if (index !== -1) {
chart.boxes.splice(index, 1);
}
},
configure(chart, item, options) {
item.fullSize = options.fullSize;
item.position = options.position;
item.weight = options.weight;
},
update(chart, width, height, minPadding) {
if (!chart) {
return;
}
const padding = toPadding(chart.options.layout.padding);
const availableWidth = Math.max(width - padding.width, 0);
const availableHeight = Math.max(height - padding.height, 0);
const boxes = buildLayoutBoxes(chart.boxes);
const verticalBoxes = boxes.vertical;
const horizontalBoxes = boxes.horizontal;
each(chart.boxes, box => {
if (typeof box.beforeLayout === 'function') {
box.beforeLayout();
}
});
const visibleVerticalBoxCount = verticalBoxes.reduce((total, wrap) =>
wrap.box.options && wrap.box.options.display === false ? total : total + 1, 0) || 1;
const params = Object.freeze({
outerWidth: width,
outerHeight: height,
padding,
availableWidth,
availableHeight,
vBoxMaxWidth: availableWidth / 2 / visibleVerticalBoxCount,
hBoxMaxHeight: availableHeight / 2
});
const maxPadding = Object.assign({}, padding);
updateMaxPadding(maxPadding, toPadding(minPadding));
const chartArea = Object.assign({
maxPadding,
w: availableWidth,
h: availableHeight,
x: padding.left,
y: padding.top
}, padding);
const stacks = setLayoutDims(verticalBoxes.concat(horizontalBoxes), params);
fitBoxes(boxes.fullSize, chartArea, params, stacks);
fitBoxes(verticalBoxes, chartArea, params, stacks);
if (fitBoxes(horizontalBoxes, chartArea, params, stacks)) {
fitBoxes(verticalBoxes, chartArea, params, stacks);
}
handleMaxPadding(chartArea);
placeBoxes(boxes.leftAndTop, chartArea, params, stacks);
chartArea.x += chartArea.w;
chartArea.y += chartArea.h;
placeBoxes(boxes.rightAndBottom, chartArea, params, stacks);
chart.chartArea = {
left: chartArea.left,
top: chartArea.top,
right: chartArea.left + chartArea.w,
bottom: chartArea.top + chartArea.h,
height: chartArea.h,
width: chartArea.w,
};
each(boxes.chartArea, (layout) => {
const box = layout.box;
Object.assign(box, chart.chartArea);
box.update(chartArea.w, chartArea.h);
});
}
};
function _createResolver(scopes, prefixes = [''], rootScopes = scopes, fallback, getTarget = () => scopes[0]) {
if (!defined(fallback)) {
fallback = _resolve('_fallback', scopes);
}
const cache = {
[Symbol.toStringTag]: 'Object',
_cacheable: true,
_scopes: scopes,
_rootScopes: rootScopes,
_fallback: fallback,
_getTarget: getTarget,
override: (scope) => _createResolver([scope, ...scopes], prefixes, rootScopes, fallback),
};
return new Proxy(cache, {
deleteProperty(target, prop) {
delete target[prop];
delete target._keys;
delete scopes[0][prop];
return true;
},
get(target, prop) {
return _cached(target, prop,
() => _resolveWithPrefixes(prop, prefixes, scopes, target));
},
getOwnPropertyDescriptor(target, prop) {
return Reflect.getOwnPropertyDescriptor(target._scopes[0], prop);
},
getPrototypeOf() {
return Reflect.getPrototypeOf(scopes[0]);
},
has(target, prop) {
return getKeysFromAllScopes(target).includes(prop);
},
ownKeys(target) {
return getKeysFromAllScopes(target);
},
set(target, prop, value) {
const storage = target._storage || (target._storage = getTarget());
storage[prop] = value;
delete target[prop];
delete target._keys;
return true;
}
});
}
function _attachContext(proxy, context, subProxy, descriptorDefaults) {
const cache = {
_cacheable: false,
_proxy: proxy,
_context: context,
_subProxy: subProxy,
_stack: new Set(),
_descriptors: _descriptors(proxy, descriptorDefaults),
setContext: (ctx) => _attachContext(proxy, ctx, subProxy, descriptorDefaults),
override: (scope) => _attachContext(proxy.override(scope), context, subProxy, descriptorDefaults)
};
return new Proxy(cache, {
deleteProperty(target, prop) {
delete target[prop];
delete proxy[prop];
return true;
},
get(target, prop, receiver) {
return _cached(target, prop,
() => _resolveWithContext(target, prop, receiver));
},
getOwnPropertyDescriptor(target, prop) {
return target._descriptors.allKeys
? Reflect.has(proxy, prop) ? {enumerable: true, configurable: true} : undefined
: Reflect.getOwnPropertyDescriptor(proxy, prop);
},
getPrototypeOf() {
return Reflect.getPrototypeOf(proxy);
},
has(target, prop) {
return Reflect.has(proxy, prop);
},
ownKeys() {
return Reflect.ownKeys(proxy);
},
set(target, prop, value) {
proxy[prop] = value;
delete target[prop];
return true;
}
});
}
function _descriptors(proxy, defaults = {scriptable: true, indexable: true}) {
const {_scriptable = defaults.scriptable, _indexable = defaults.indexable, _allKeys = defaults.allKeys} = proxy;
return {
allKeys: _allKeys,
scriptable: _scriptable,
indexable: _indexable,
isScriptable: isFunction(_scriptable) ? _scriptable : () => _scriptable,
isIndexable: isFunction(_indexable) ? _indexable : () => _indexable
};
}
const readKey = (prefix, name) => prefix ? prefix + _capitalize(name) : name;
const needsSubResolver = (prop, value) => isObject(value) && prop !== 'adapters';
function _cached(target, prop, resolve) {
let value = target[prop];
if (defined(value)) {
return value;
}
value = resolve();
if (defined(value)) {
target[prop] = value;
}
return value;
}
function _resolveWithContext(target, prop, receiver) {
const {_proxy, _context, _subProxy, _descriptors: descriptors} = target;
let value = _proxy[prop];
if (isFunction(value) && descriptors.isScriptable(prop)) {
value = _resolveScriptable(prop, value, target, receiver);
}
if (isArray(value) && value.length) {
value = _resolveArray(prop, value, target, descriptors.isIndexable);
}
if (needsSubResolver(prop, value)) {
value = _attachContext(value, _context, _subProxy && _subProxy[prop], descriptors);
}
return value;
}
function _resolveScriptable(prop, value, target, receiver) {
const {_proxy, _context, _subProxy, _stack} = target;
if (_stack.has(prop)) {
throw new Error('Recursion detected: ' + Array.from(_stack).join('->') + '->' + prop);
}
_stack.add(prop);
value = value(_context, _subProxy || receiver);
_stack.delete(prop);
if (isObject(value)) {
value = createSubResolver(_proxy._scopes, _proxy, prop, value);
}
return value;
}
function _resolveArray(prop, value, target, isIndexable) {
const {_proxy, _context, _subProxy, _descriptors: descriptors} = target;
if (defined(_context.index) && isIndexable(prop)) {
value = value[_context.index % value.length];
} else if (isObject(value[0])) {
const arr = value;
const scopes = _proxy._scopes.filter(s => s !== arr);
value = [];
for (const item of arr) {
const resolver = createSubResolver(scopes, _proxy, prop, item);
value.push(_attachContext(resolver, _context, _subProxy && _subProxy[prop], descriptors));
}
}
return value;
}
function resolveFallback(fallback, prop, value) {
return isFunction(fallback) ? fallback(prop, value) : fallback;
}
const getScope = (key, parent) => key === true ? parent
: typeof key === 'string' ? resolveObjectKey(parent, key) : undefined;
function addScopes(set, parentScopes, key, parentFallback) {
for (const parent of parentScopes) {
const scope = getScope(key, parent);
if (scope) {
set.add(scope);
const fallback = resolveFallback(scope._fallback, key, scope);
if (defined(fallback) && fallback !== key && fallback !== parentFallback) {
return fallback;
}
} else if (scope === false && defined(parentFallback) && key !== parentFallback) {
return null;
}
}
return false;
}
function createSubResolver(parentScopes, resolver, prop, value) {
const rootScopes = resolver._rootScopes;
const fallback = resolveFallback(resolver._fallback, prop, value);
const allScopes = [...parentScopes, ...rootScopes];
const set = new Set();
set.add(value);
let key = addScopesFromKey(set, allScopes, prop, fallback || prop);
if (key === null) {
return false;
}
if (defined(fallback) && fallback !== prop) {
key = addScopesFromKey(set, allScopes, fallback, key);
if (key === null) {
return false;
}
}
return _createResolver(Array.from(set), [''], rootScopes, fallback,
() => subGetTarget(resolver, prop, value));
}
function addScopesFromKey(set, allScopes, key, fallback) {
while (key) {
key = addScopes(set, allScopes, key, fallback);
}
return key;
}
function subGetTarget(resolver, prop, value) {
const parent = resolver._getTarget();
if (!(prop in parent)) {
parent[prop] = {};
}
const target = parent[prop];
if (isArray(target) && isObject(value)) {
return value;
}
return target;
}
function _resolveWithPrefixes(prop, prefixes, scopes, proxy) {
let value;
for (const prefix of prefixes) {
value = _resolve(readKey(prefix, prop), scopes);
if (defined(value)) {
return needsSubResolver(prop, value)
? createSubResolver(scopes, proxy, prop, value)
: value;
}
}
}
function _resolve(key, scopes) {
for (const scope of scopes) {
if (!scope) {
continue;
}
const value = scope[key];
if (defined(value)) {
return value;
}
}
}
function getKeysFromAllScopes(target) {
let keys = target._keys;
if (!keys) {
keys = target._keys = resolveKeysFromAllScopes(target._scopes);
}
return keys;
}
function resolveKeysFromAllScopes(scopes) {
const set = new Set();
for (const scope of scopes) {
for (const key of Object.keys(scope).filter(k => !k.startsWith('_'))) {
set.add(key);
}
}
return Array.from(set);
}
const EPSILON = Number.EPSILON || 1e-14;
const getPoint = (points, i) => i < points.length && !points[i].skip && points[i];
const getValueAxis = (indexAxis) => indexAxis === 'x' ? 'y' : 'x';
function splineCurve(firstPoint, middlePoint, afterPoint, t) {
const previous = firstPoint.skip ? middlePoint : firstPoint;
const current = middlePoint;
const next = afterPoint.skip ? middlePoint : afterPoint;
const d01 = distanceBetweenPoints(current, previous);
const d12 = distanceBetweenPoints(next, current);
let s01 = d01 / (d01 + d12);
let s12 = d12 / (d01 + d12);
s01 = isNaN(s01) ? 0 : s01;
s12 = isNaN(s12) ? 0 : s12;
const fa = t * s01;
const 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)
}
};
}
function monotoneAdjust(points, deltaK, mK) {
const pointsLen = points.length;
let alphaK, betaK, tauK, squaredMagnitude, pointCurrent;
let pointAfter = getPoint(points, 0);
for (let i = 0; i < pointsLen - 1; ++i) {
pointCurrent = pointAfter;
pointAfter = getPoint(points, i + 1);
if (!pointCurrent || !pointAfter) {
continue;
}
if (almostEquals(deltaK[i], 0, EPSILON)) {
mK[i] = mK[i + 1] = 0;
continue;
}
alphaK = mK[i] / deltaK[i];
betaK = mK[i + 1] / deltaK[i];
squaredMagnitude = Math.pow(alphaK, 2) + Math.pow(betaK, 2);
if (squaredMagnitude <= 9) {
continue;
}
tauK = 3 / Math.sqrt(squaredMagnitude);
mK[i] = alphaK * tauK * deltaK[i];
mK[i + 1] = betaK * tauK * deltaK[i];
}
}
function monotoneCompute(points, mK, indexAxis = 'x') {
const valueAxis = getValueAxis(indexAxis);
const pointsLen = points.length;
let delta, pointBefore, pointCurrent;
let pointAfter = getPoint(points, 0);
for (let i = 0; i < pointsLen; ++i) {
pointBefore = pointCurrent;
pointCurrent = pointAfter;
pointAfter = getPoint(points, i + 1);
if (!pointCurrent) {
continue;
}
const iPixel = pointCurrent[indexAxis];
const vPixel = pointCurrent[valueAxis];
if (pointBefore) {
delta = (iPixel - pointBefore[indexAxis]) / 3;
pointCurrent[`cp1${indexAxis}`] = iPixel - delta;
pointCurrent[`cp1${valueAxis}`] = vPixel - delta * mK[i];
}
if (pointAfter) {
delta = (pointAfter[indexAxis] - iPixel) / 3;
pointCurrent[`cp2${indexAxis}`] = iPixel + delta;
pointCurrent[`cp2${valueAxis}`] = vPixel + delta * mK[i];
}
}
}
function splineCurveMonotone(points, indexAxis = 'x') {
const valueAxis = getValueAxis(indexAxis);
const pointsLen = points.length;
const deltaK = Array(pointsLen).fill(0);
const mK = Array(pointsLen);
let i, pointBefore, pointCurrent;
let pointAfter = getPoint(points, 0);
for (i = 0; i < pointsLen; ++i) {
pointBefore = pointCurrent;
pointCurrent = pointAfter;
pointAfter = getPoint(points, i + 1);
if (!pointCurrent) {
continue;
}
if (pointAfter) {
const slopeDelta = pointAfter[indexAxis] - pointCurrent[indexAxis];
deltaK[i] = slopeDelta !== 0 ? (pointAfter[valueAxis] - pointCurrent[valueAxis]) / slopeDelta : 0;
}
mK[i] = !pointBefore ? deltaK[i]
: !pointAfter ? deltaK[i - 1]
: (sign(deltaK[i - 1]) !== sign(deltaK[i])) ? 0
: (deltaK[i - 1] + deltaK[i]) / 2;
}
monotoneAdjust(points, deltaK, mK);
monotoneCompute(points, mK, indexAxis);
}
function capControlPoint(pt, min, max) {
return Math.max(Math.min(pt, max), min);
}
function capBezierPoints(points, area) {
let i, ilen, point, inArea, inAreaPrev;
let inAreaNext = _isPointInArea(points[0], area);
for (i = 0, ilen = points.length; i < ilen; ++i) {
inAreaPrev = inArea;
inArea = inAreaNext;
inAreaNext = i < ilen - 1 && _isPointInArea(points[i + 1], area);
if (!inArea) {
continue;
}
point = points[i];
if (inAreaPrev) {
point.cp1x = capControlPoint(point.cp1x, area.left, area.right);
point.cp1y = capControlPoint(point.cp1y, area.top, area.bottom);
}
if (inAreaNext) {
point.cp2x = capControlPoint(point.cp2x, area.left, area.right);
point.cp2y = capControlPoint(point.cp2y, area.top, area.bottom);
}
}
}
function _updateBezierControlPoints(points, options, area, loop, indexAxis) {
let i, ilen, point, controlPoints;
if (options.spanGaps) {
points = points.filter((pt) => !pt.skip);
}
if (options.cubicInterpolationMode === 'monotone') {
splineCurveMonotone(points, indexAxis);
} else {
let prev = loop ? points[points.length - 1] : points[0];
for (i = 0, ilen = points.length; i < ilen; ++i) {
point = points[i];
controlPoints = splineCurve(
prev,
point,
points[Math.min(i + 1, ilen - (loop ? 0 : 1)) % ilen],
options.tension
);
point.cp1x = controlPoints.previous.x;
point.cp1y = controlPoints.previous.y;
point.cp2x = controlPoints.next.x;
point.cp2y = controlPoints.next.y;
prev = point;
}
}
if (options.capBezierPoints) {
capBezierPoints(points, area);
}
}
const atEdge = (t) => t === 0 || t === 1;
const elasticIn = (t, s, p) => -(Math.pow(2, 10 * (t -= 1)) * Math.sin((t - s) * TAU / p));
const elasticOut = (t, s, p) => Math.pow(2, -10 * t) * Math.sin((t - s) * TAU / p) + 1;
const effects = {
linear: t => t,
easeInQuad: t => t * t,
easeOutQuad: t => -t * (t - 2),
easeInOutQuad: t => ((t /= 0.5) < 1)
? 0.5 * t * t
: -0.5 * ((--t) * (t - 2) - 1),
easeInCubic: t => t * t * t,
easeOutCubic: t => (t -= 1) * t * t + 1,
easeInOutCubic: t => ((t /= 0.5) < 1)
? 0.5 * t * t * t
: 0.5 * ((t -= 2) * t * t + 2),
easeInQuart: t => t * t * t * t,
easeOutQuart: t => -((t -= 1) * t * t * t - 1),
easeInOutQuart: t => ((t /= 0.5) < 1)
? 0.5 * t * t * t * t
: -0.5 * ((t -= 2) * t * t * t - 2),
easeInQuint: t => t * t * t * t * t,
easeOutQuint: t => (t -= 1) * t * t * t * t + 1,
easeInOutQuint: t => ((t /= 0.5) < 1)
? 0.5 * t * t * t * t * t
: 0.5 * ((t -= 2) * t * t * t * t + 2),
easeInSine: t => -Math.cos(t * HALF_PI) + 1,
easeOutSine: t => Math.sin(t * HALF_PI),
easeInOutSine: t => -0.5 * (Math.cos(PI * t) - 1),
easeInExpo: t => (t === 0) ? 0 : Math.pow(2, 10 * (t - 1)),
easeOutExpo: t => (t === 1) ? 1 : -Math.pow(2, -10 * t) + 1,
easeInOutExpo: t => atEdge(t) ? t : t < 0.5
? 0.5 * Math.pow(2, 10 * (t * 2 - 1))
: 0.5 * (-Math.pow(2, -10 * (t * 2 - 1)) + 2),
easeInCirc: t => (t >= 1) ? t : -(Math.sqrt(1 - t * t) - 1),
easeOutCirc: t => Math.sqrt(1 - (t -= 1) * t),
easeInOutCirc: t => ((t /= 0.5) < 1)
? -0.5 * (Math.sqrt(1 - t * t) - 1)
: 0.5 * (Math.sqrt(1 - (t -= 2) * t) + 1),
easeInElastic: t => atEdge(t) ? t : elasticIn(t, 0.075, 0.3),
easeOutElastic: t => atEdge(t) ? t : elasticOut(t, 0.075, 0.3),
easeInOutElastic(t) {
const s = 0.1125;
const p = 0.45;
return atEdge(t) ? t :
t < 0.5
? 0.5 * elasticIn(t * 2, s, p)
: 0.5 + 0.5 * elasticOut(t * 2 - 1, s, p);
},
easeInBack(t) {
const s = 1.70158;
return t * t * ((s + 1) * t - s);
},
easeOutBack(t) {
const s = 1.70158;
return (t -= 1) * t * ((s + 1) * t + s) + 1;
},
easeInOutBack(t) {
let 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: t => 1 - effects.easeOutBounce(1 - t),
easeOutBounce(t) {
const m = 7.5625;
const d = 2.75;
if (t < (1 / d)) {
return m * t * t;
}
if (t < (2 / d)) {
return m * (t -= (1.5 / d)) * t + 0.75;
}
if (t < (2.5 / d)) {
return m * (t -= (2.25 / d)) * t + 0.9375;
}
return m * (t -= (2.625 / d)) * t + 0.984375;
},
easeInOutBounce: t => (t < 0.5)
? effects.easeInBounce(t * 2) * 0.5
: effects.easeOutBounce(t * 2 - 1) * 0.5 + 0.5,
};
function _pointInLine(p1, p2, t, mode) {
return {
x: p1.x + t * (p2.x - p1.x),
y: p1.y + t * (p2.y - p1.y)
};
}
function _steppedInterpolation(p1, p2, t, mode) {
return {
x: p1.x + t * (p2.x - p1.x),
y: mode === 'middle' ? t < 0.5 ? p1.y : p2.y
: mode === 'after' ? t < 1 ? p1.y : p2.y
: t > 0 ? p2.y : p1.y
};
}
function _bezierInterpolation(p1, p2, t, mode) {
const cp1 = {x: p1.cp2x, y: p1.cp2y};
const cp2 = {x: p2.cp1x, y: p2.cp1y};
const a = _pointInLine(p1, cp1, t);
const b = _pointInLine(cp1, cp2, t);
const c = _pointInLine(cp2, p2, t);
const d = _pointInLine(a, b, t);
const e = _pointInLine(b, c, t);
return _pointInLine(d, e, t);
}
const intlCache = new Map();
function getNumberFormat(locale, options) {
options = options || {};
const cacheKey = locale + JSON.stringify(options);
let formatter = intlCache.get(cacheKey);
if (!formatter) {
formatter = new Intl.NumberFormat(locale, options);
intlCache.set(cacheKey, formatter);
}
return formatter;
}
function formatNumber(num, locale, options) {
return getNumberFormat(locale, options).format(num);
}
const getRightToLeftAdapter = function(rectX, width) {
return {
x(x) {
return rectX + rectX + width - x;
},
setWidth(w) {
width = w;
},
textAlign(align) {
if (align === 'center') {
return align;
}
return align === 'right' ? 'left' : 'right';
},
xPlus(x, value) {
return x - value;
},
leftForLtr(x, itemWidth) {
return x - itemWidth;
},
};
};
const getLeftToRightAdapter = function() {
return {
x(x) {
return x;
},
setWidth(w) {
},
textAlign(align) {
return align;
},
xPlus(x, value) {
return x + value;
},
leftForLtr(x, _itemWidth) {
return x;
},
};
};
function getRtlAdapter(rtl, rectX, width) {
return rtl ? getRightToLeftAdapter(rectX, width) : getLeftToRightAdapter();
}
function overrideTextDirection(ctx, direction) {
let 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;
}
}
function restoreTextDirection(ctx, original) {
if (original !== undefined) {
delete ctx.prevTextDirection;
ctx.canvas.style.setProperty('direction', original[0], original[1]);
}
}
function propertyFn(property) {
if (property === 'angle') {
return {
between: _angleBetween,
compare: _angleDiff,
normalize: _normalizeAngle,
};
}
return {
between: (n, s, e) => n >= Math.min(s, e) && n <= Math.max(e, s),
compare: (a, b) => a - b,
normalize: x => x
};
}
function normalizeSegment({start, end, count, loop, style}) {
return {
start: start % count,
end: end % count,
loop: loop && (end - start + 1) % count === 0,
style
};
}
function getSegment(segment, points, bounds) {
const {property, start: startBound, end: endBound} = bounds;
const {between, normalize} = propertyFn(property);
const count = points.length;
let {start, end, loop} = segment;
let i, ilen;
if (loop) {
start += count;
end += count;
for (i = 0, ilen = count; i < ilen; ++i) {
if (!between(normalize(points[start % count][property]), startBound, endBound)) {
break;
}
start--;
end--;
}
start %= count;
end %= count;
}
if (end < start) {
end += count;
}
return {start, end, loop, style: segment.style};
}
function _boundSegment(segment, points, bounds) {
if (!bounds) {
return [segment];
}
const {property, start: startBound, end: endBound} = bounds;
const count = points.length;
const {compare, between, normalize} = propertyFn(property);
const {start, end, loop, style} = getSegment(segment, points, bounds);
const result = [];
let inside = false;
let subStart = null;
let value, point, prevValue;
const startIsBefore = () => between(startBound, prevValue, value) && compare(startBound, prevValue) !== 0;
const endIsBefore = () => compare(endBound, value) === 0 || between(endBound, prevValue, value);
const shouldStart = () => inside || startIsBefore();
const shouldStop = () => !inside || endIsBefore();
for (let i = start, prev = start; i <= end; ++i) {
point = points[i % count];
if (point.skip) {
continue;
}
value = normalize(point[property]);
if (value === prevValue) {
continue;
}
inside = between(value, startBound, endBound);
if (subStart === null && shouldStart()) {
subStart = compare(value, startBound) === 0 ? i : prev;
}
if (subStart !== null && shouldStop()) {
result.push(normalizeSegment({start: subStart, end: i, loop, count, style}));
subStart = null;
}
prev = i;
prevValue = value;
}
if (subStart !== null) {
result.push(normalizeSegment({start: subStart, end, loop, count, style}));
}
return result;
}
function _boundSegments(line, bounds) {
const result = [];
const segments = line.segments;
for (let i = 0; i < segments.length; i++) {
const sub = _boundSegment(segments[i], line.points, bounds);
if (sub.length) {
result.push(...sub);
}
}
return result;
}
function findStartAndEnd(points, count, loop, spanGaps) {
let start = 0;
let end = count - 1;
if (loop && !spanGaps) {
while (start < count && !points[start].skip) {
start++;
}
}
while (start < count && points[start].skip) {
start++;
}
start %= count;
if (loop) {
end += start;
}
while (end > start && points[end % count].skip) {
end--;
}
end %= count;
return {start, end};
}
function solidSegments(points, start, max, loop) {
const count = points.length;
const result = [];
let last = start;
let prev = points[start];
let end;
for (end = start + 1; end <= max; ++end) {
const cur = points[end % count];
if (cur.skip || cur.stop) {
if (!prev.skip) {
loop = false;
result.push({start: start % count, end: (end - 1) % count, loop});
start = last = cur.stop ? end : null;
}
} else {
last = end;
if (prev.skip) {
start = end;
}
}
prev = cur;
}
if (last !== null) {
result.push({start: start % count, end: last % count, loop});
}
return result;
}
function _computeSegments(line, segmentOptions) {
const points = line.points;
const spanGaps = line.options.spanGaps;
const count = points.length;
if (!count) {
return [];
}
const loop = !!line._loop;
const {start, end} = findStartAndEnd(points, count, loop, spanGaps);
if (spanGaps === true) {
return splitByStyles(line, [{start, end, loop}], points, segmentOptions);
}
const max = end < start ? end + count : end;
const completeLoop = !!line._fullLoop && start === 0 && end === count - 1;
return splitByStyles(line, solidSegments(points, start, max, completeLoop), points, segmentOptions);
}
function splitByStyles(line, segments, points, segmentOptions) {
if (!segmentOptions || !segmentOptions.setContext || !points) {
return segments;
}
return doSplitByStyles(line, segments, points, segmentOptions);
}
function doSplitByStyles(line, segments, points, segmentOptions) {
const baseStyle = readStyle(line.options);
const count = points.length;
const result = [];
let start = segments[0].start;
let i = start;
for (const segment of segments) {
let prevStyle = baseStyle;
let prev = points[start % count];
let style;
for (i = start + 1; i <= segment.end; i++) {
const pt = points[i % count];
style = readStyle(segmentOptions.setContext({
type: 'segment',
p0: prev,
p1: pt,
p0DataIndex: (i - 1) % count,
p1DataIndex: i % count,
datasetIndex: line._datasetIndex
}));
if (styleChanged(style, prevStyle)) {
result.push({start: start, end: i - 1, loop: segment.loop, style: prevStyle});
prevStyle = style;
start = i - 1;
}
prev = pt;
prevStyle = style;
}
if (start < i - 1) {
result.push({start, end: i - 1, loop: segment.loop, style});
start = i - 1;
}
}
return result;
}
function readStyle(options) {
return {
backgroundColor: options.backgroundColor,
borderCapStyle: options.borderCapStyle,
borderDash: options.borderDash,
borderDashOffset: options.borderDashOffset,
borderJoinStyle: options.borderJoinStyle,
borderWidth: options.borderWidth,
borderColor: options.borderColor
};
}
function styleChanged(style, prevStyle) {
return prevStyle && JSON.stringify(style) !== JSON.stringify(prevStyle);
}
var helpers = /*#__PURE__*/Object.freeze({
__proto__: null,
easingEffects: effects,
color: color,
getHoverColor: getHoverColor,
noop: noop,
uid: uid,
isNullOrUndef: isNullOrUndef,
isArray: isArray,
isObject: isObject,
isFinite: isNumberFinite,
finiteOrDefault: finiteOrDefault,
valueOrDefault: valueOrDefault,
toPercentage: toPercentage,
toDimension: toDimension,
callback: callback,
each: each,
_elementsEqual: _elementsEqual,
clone: clone,
_merger: _merger,
merge: merge,
mergeIf: mergeIf,
_mergerIf: _mergerIf,
_deprecated: _deprecated,
resolveObjectKey: resolveObjectKey,
_capitalize: _capitalize,
defined: defined,
isFunction: isFunction,
setsEqual: setsEqual,
toFontString: toFontString,
_measureText: _measureText,
_longestText: _longestText,
_alignPixel: _alignPixel,
clearCanvas: clearCanvas,
drawPoint: drawPoint,
_isPointInArea: _isPointInArea,
clipArea: clipArea,
unclipArea: unclipArea,
_steppedLineTo: _steppedLineTo,
_bezierCurveTo: _bezierCurveTo,
renderText: renderText,
addRoundedRectPath: addRoundedRectPath,
_lookup: _lookup,
_lookupByKey: _lookupByKey,
_rlookupByKey: _rlookupByKey,
_filterBetween: _filterBetween,
listenArrayEvents: listenArrayEvents,
unlistenArrayEvents: unlistenArrayEvents,
_arrayUnique: _arrayUnique,
_createResolver: _createResolver,
_attachContext: _attachContext,
_descriptors: _descriptors,
splineCurve: splineCurve,
splineCurveMonotone: splineCurveMonotone,
_updateBezierControlPoints: _updateBezierControlPoints,
_isDomSupported: _isDomSupported,
_getParentNode: _getParentNode,
getStyle: getStyle,
getRelativePosition: getRelativePosition$1,
getMaximumSize: getMaximumSize,
retinaScale: retinaScale,
supportsEventListenerOptions: supportsEventListenerOptions,
readUsedSize: readUsedSize,
fontString: fontString,
requestAnimFrame: requestAnimFrame,
throttled: throttled,
debounce: debounce,
_toLeftRightCenter: _toLeftRightCenter,
_alignStartEnd: _alignStartEnd,
_textX: _textX,
_pointInLine: _pointInLine,
_steppedInterpolation: _steppedInterpolation,
_bezierInterpolation: _bezierInterpolation,
formatNumber: formatNumber,
toLineHeight: toLineHeight,
_readValueToProps: _readValueToProps,
toTRBL: toTRBL,
toTRBLCorners: toTRBLCorners,
toPadding: toPadding,
toFont: toFont,
resolve: resolve,
_addGrace: _addGrace,
PI: PI,
TAU: TAU,
PITAU: PITAU,
INFINITY: INFINITY,
RAD_PER_DEG: RAD_PER_DEG,
HALF_PI: HALF_PI,
QUARTER_PI: QUARTER_PI,
TWO_THIRDS_PI: TWO_THIRDS_PI,
log10: log10,
sign: sign,
niceNum: niceNum,
_factorize: _factorize,
isNumber: isNumber,
almostEquals: almostEquals,
almostWhole: almostWhole,
_setMinAndMaxByKey: _setMinAndMaxByKey,
toRadians: toRadians,
toDegrees: toDegrees,
_decimalPlaces: _decimalPlaces,
getAngleFromPoint: getAngleFromPoint,
distanceBetweenPoints: distanceBetweenPoints,
_angleDiff: _angleDiff,
_normalizeAngle: _normalizeAngle,
_angleBetween: _angleBetween,
_limitValue: _limitValue,
_int16Range: _int16Range,
getRtlAdapter: getRtlAdapter,
overrideTextDirection: overrideTextDirection,
restoreTextDirection: restoreTextDirection,
_boundSegment: _boundSegment,
_boundSegments: _boundSegments,
_computeSegments: _computeSegments
});
class BasePlatform {
acquireContext(canvas, aspectRatio) {}
releaseContext(context) {
return false;
}
addEventListener(chart, type, listener) {}
removeEventListener(chart, type, listener) {}
getDevicePixelRatio() {
return 1;
}
getMaximumSize(element, width, height, aspectRatio) {
width = Math.max(0, width || element.width);
height = height || element.height;
return {
width,
height: Math.max(0, aspectRatio ? Math.floor(width / aspectRatio) : height)
};
}
isAttached(canvas) {
return true;
}
}
class BasicPlatform extends BasePlatform {
acquireContext(item) {
return item && item.getContext && item.getContext('2d') || null;
}
}
const EXPANDO_KEY = '$chartjs';
const EVENT_TYPES = {
touchstart: 'mousedown',
touchmove: 'mousemove',
touchend: 'mouseup',
pointerenter: 'mouseenter',
pointerdown: 'mousedown',
pointermove: 'mousemove',
pointerup: 'mouseup',
pointerleave: 'mouseout',
pointerout: 'mouseout'
};
const isNullOrEmpty = value => value === null || value === '';
function initCanvas(canvas, aspectRatio) {
const style = canvas.style;
const renderHeight = canvas.getAttribute('height');
const renderWidth = canvas.getAttribute('width');
canvas[EXPANDO_KEY] = {
initial: {
height: renderHeight,
width: renderWidth,
style: {
display: style.display,
height: style.height,
width: style.width
}
}
};
style.display = style.display || 'block';
style.boxSizing = style.boxSizing || 'border-box';
if (isNullOrEmpty(renderWidth)) {
const displayWidth = readUsedSize(canvas, 'width');
if (displayWidth !== undefined) {
canvas.width = displayWidth;
}
}
if (isNullOrEmpty(renderHeight)) {
if (canvas.style.height === '') {
canvas.height = canvas.width / (aspectRatio || 2);
} else {
const displayHeight = readUsedSize(canvas, 'height');
if (displayHeight !== undefined) {
canvas.height = displayHeight;
}
}
}
return canvas;
}
const eventListenerOptions = supportsEventListenerOptions ? {passive: true} : false;
function addListener(node, type, listener) {
node.addEventListener(type, listener, eventListenerOptions);
}
function removeListener(chart, type, listener) {
chart.canvas.removeEventListener(type, listener, eventListenerOptions);
}
function fromNativeEvent(event, chart) {
const type = EVENT_TYPES[event.type] || event.type;
const {x, y} = getRelativePosition$1(event, chart);
return {
type,
chart,
native: event,
x: x !== undefined ? x : null,
y: y !== undefined ? y : null,
};
}
function createAttachObserver(chart, type, listener) {
const canvas = chart.canvas;
const container = canvas && _getParentNode(canvas);
const element = container || canvas;
const observer = new MutationObserver(entries => {
const parent = _getParentNode(element);
entries.forEach(entry => {
for (let i = 0; i < entry.addedNodes.length; i++) {
const added = entry.addedNodes[i];
if (added === element || added === parent) {
listener(entry.target);
}
}
});
});
observer.observe(document, {childList: true, subtree: true});
return observer;
}
function createDetachObserver(chart, type, listener) {
const canvas = chart.canvas;
const container = canvas && _getParentNode(canvas);
if (!container) {
return;
}
const observer = new MutationObserver(entries => {
entries.forEach(entry => {
for (let i = 0; i < entry.removedNodes.length; i++) {
if (entry.removedNodes[i] === canvas) {
listener();
break;
}
}
});
});
observer.observe(container, {childList: true});
return observer;
}
const drpListeningCharts = new Map();
let oldDevicePixelRatio = 0;
function onWindowResize() {
const dpr = window.devicePixelRatio;
if (dpr === oldDevicePixelRatio) {
return;
}
oldDevicePixelRatio = dpr;
drpListeningCharts.forEach((resize, chart) => {
if (chart.currentDevicePixelRatio !== dpr) {
resize();
}
});
}
function listenDevicePixelRatioChanges(chart, resize) {
if (!drpListeningCharts.size) {
window.addEventListener('resize', onWindowResize);
}
drpListeningCharts.set(chart, resize);
}
function unlistenDevicePixelRatioChanges(chart) {
drpListeningCharts.delete(chart);
if (!drpListeningCharts.size) {
window.removeEventListener('resize', onWindowResize);
}
}
function createResizeObserver(chart, type, listener) {
const canvas = chart.canvas;
const container = canvas && _getParentNode(canvas);
if (!container) {
return;
}
const resize = throttled((width, height) => {
const w = container.clientWidth;
listener(width, height);
if (w < container.clientWidth) {
listener();
}
}, window);
const observer = new ResizeObserver(entries => {
const entry = entries[0];
const width = entry.contentRect.width;
const height = entry.contentRect.height;
if (width === 0 && height === 0) {
return;
}
resize(width, height);
});
observer.observe(container);
listenDevicePixelRatioChanges(chart, resize);
return observer;
}
function releaseObserver(chart, type, observer) {
if (observer) {
observer.disconnect();
}
if (type === 'resize') {
unlistenDevicePixelRatioChanges(chart);
}
}
function createProxyAndListen(chart, type, listener) {
const canvas = chart.canvas;
const proxy = throttled((event) => {
if (chart.ctx !== null) {
listener(fromNativeEvent(event, chart));
}
}, chart, (args) => {
const event = args[0];
return [event, event.offsetX, event.offsetY];
});
addListener(canvas, type, proxy);
return proxy;
}
class DomPlatform extends BasePlatform {
acquireContext(canvas, aspectRatio) {
const context = canvas && canvas.getContext && canvas.getContext('2d');
if (context && context.canvas === canvas) {
initCanvas(canvas, aspectRatio);
return context;
}
return null;
}
releaseContext(context) {
const canvas = context.canvas;
if (!canvas[EXPANDO_KEY]) {
return false;
}
const initial = canvas[EXPANDO_KEY].initial;
['height', 'width'].forEach((prop) => {
const value = initial[prop];
if (isNullOrUndef(value)) {
canvas.removeAttribute(prop);
} else {
canvas.setAttribute(prop, value);
}
});
const style = initial.style || {};
Object.keys(style).forEach((key) => {
canvas.style[key] = style[key];
});
canvas.width = canvas.width;
delete canvas[EXPANDO_KEY];
return true;
}
addEventListener(chart, type, listener) {
this.removeEventListener(chart, type);
const proxies = chart.$proxies || (chart.$proxies = {});
const handlers = {
attach: createAttachObserver,
detach: createDetachObserver,
resize: createResizeObserver
};
const handler = handlers[type] || createProxyAndListen;
proxies[type] = handler(chart, type, listener);
}
removeEventListener(chart, type) {
const proxies = chart.$proxies || (chart.$proxies = {});
const proxy = proxies[type];
if (!proxy) {
return;
}
const handlers = {
attach: releaseObserver,
detach: releaseObserver,
resize: releaseObserver
};
const handler = handlers[type] || removeListener;
handler(chart, type, proxy);
proxies[type] = undefined;
}
getDevicePixelRatio() {
return window.devicePixelRatio;
}
getMaximumSize(canvas, width, height, aspectRatio) {
return getMaximumSize(canvas, width, height, aspectRatio);
}
isAttached(canvas) {
const container = _getParentNode(canvas);
return !!(container && container.isConnected);
}
}
function _detectPlatform(canvas) {
if (!_isDomSupported() || (typeof OffscreenCanvas !== 'undefined' && canvas instanceof OffscreenCanvas)) {
return BasicPlatform;
}
return DomPlatform;
}
var platforms = /*#__PURE__*/Object.freeze({
__proto__: null,
_detectPlatform: _detectPlatform,
BasePlatform: BasePlatform,
BasicPlatform: BasicPlatform,
DomPlatform: DomPlatform
});
const transparent = 'transparent';
const interpolators = {
boolean(from, to, factor) {
return factor > 0.5 ? to : from;
},
color(from, to, factor) {
const c0 = color(from || transparent);
const c1 = c0.valid && color(to || transparent);
return c1 && c1.valid
? c1.mix(c0, factor).hexString()
: to;
},
number(from, to, factor) {
return from + (to - from) * factor;
}
};
class Animation {
constructor(cfg, target, prop, to) {
const currentValue = target[prop];
to = resolve([cfg.to, to, currentValue, cfg.from]);
const from = resolve([cfg.from, currentValue, to]);
this._active = true;
this._fn = cfg.fn || interpolators[cfg.type || typeof from];
this._easing = effects[cfg.easing] || effects.linear;
this._start = Math.floor(Date.now() + (cfg.delay || 0));
this._duration = this._total = Math.floor(cfg.duration);
this._loop = !!cfg.loop;
this._target = target;
this._prop = prop;
this._from = from;
this._to = to;
this._promises = undefined;
}
active() {
return this._active;
}
update(cfg, to, date) {
const me = this;
if (me._active) {
me._notify(false);
const currentValue = me._target[me._prop];
const elapsed = date - me._start;
const remain = me._duration - elapsed;
me._start = date;
me._duration = Math.floor(Math.max(remain, cfg.duration));
me._total += elapsed;
me._loop = !!cfg.loop;
me._to = resolve([cfg.to, to, currentValue, cfg.from]);
me._from = resolve([cfg.from, currentValue, to]);
}
}
cancel() {
const me = this;
if (me._active) {
me.tick(Date.now());
me._active = false;
me._notify(false);
}
}
tick(date) {
const me = this;
const elapsed = date - me._start;
const duration = me._duration;
const prop = me._prop;
const from = me._from;
const loop = me._loop;
const to = me._to;
let factor;
me._active = from !== to && (loop || (elapsed < duration));
if (!me._active) {
me._target[prop] = to;
me._notify(true);
return;
}
if (elapsed < 0) {
me._target[prop] = from;
return;
}
factor = (elapsed / duration) % 2;
factor = loop && factor > 1 ? 2 - factor : factor;
factor = me._easing(Math.min(1, Math.max(0, factor)));
me._target[prop] = me._fn(from, to, factor);
}
wait() {
const promises = this._promises || (this._promises = []);
return new Promise((res, rej) => {
promises.push({res, rej});
});
}
_notify(resolved) {
const method = resolved ? 'res' : 'rej';
const promises = this._promises || [];
for (let i = 0; i < promises.length; i++) {
promises[i][method]();
}
}
}
const numbers = ['x', 'y', 'borderWidth', 'radius', 'tension'];
const colors = ['color', 'borderColor', 'backgroundColor'];
defaults.set('animation', {
delay: undefined,
duration: 1000,
easing: 'easeOutQuart',
fn: undefined,
from: undefined,
loop: undefined,
to: undefined,
type: undefined,
});
const animationOptions = Object.keys(defaults.animation);
defaults.describe('animation', {
_fallback: false,
_indexable: false,
_scriptable: (name) => name !== 'onProgress' && name !== 'onComplete' && name !== 'fn',
});
defaults.set('animations', {
colors: {
type: 'color',
properties: colors
},
numbers: {
type: 'number',
properties: numbers
},
});
defaults.describe('animations', {
_fallback: 'animation',
});
defaults.set('transitions', {
active: {
animation: {
duration: 400
}
},
resize: {
animation: {
duration: 0
}
},
show: {
animations: {
colors: {
from: 'transparent'
},
visible: {
type: 'boolean',
duration: 0
},
}
},
hide: {
animations: {
colors: {
to: 'transparent'
},
visible: {
type: 'boolean',
easing: 'linear',
fn: v => v | 0
},
}
}
});
class Animations {
constructor(chart, config) {
this._chart = chart;
this._properties = new Map();
this.configure(config);
}
configure(config) {
if (!isObject(config)) {
return;
}
const animatedProps = this._properties;
Object.getOwnPropertyNames(config).forEach(key => {
const cfg = config[key];
if (!isObject(cfg)) {
return;
}
const resolved = {};
for (const option of animationOptions) {
resolved[option] = cfg[option];
}
(isArray(cfg.properties) && cfg.properties || [key]).forEach((prop) => {
if (prop === key || !animatedProps.has(prop)) {
animatedProps.set(prop, resolved);
}
});
});
}
_animateOptions(target, values) {
const newOptions = values.options;
const options = resolveTargetOptions(target, newOptions);
if (!options) {
return [];
}
const animations = this._createAnimations(options, newOptions);
if (newOptions.$shared) {
awaitAll(target.options.$animations, newOptions).then(() => {
target.options = newOptions;
}, () => {
});
}
return animations;
}
_createAnimations(target, values) {
const animatedProps = this._properties;
const animations = [];
const running = target.$animations || (target.$animations = {});
const props = Object.keys(values);
const date = Date.now();
let i;
for (i = props.length - 1; i >= 0; --i) {
const prop = props[i];
if (prop.charAt(0) === '$') {
continue;
}
if (prop === 'options') {
animations.push(...this._animateOptions(target, values));
continue;
}
const value = values[prop];
let animation = running[prop];
const cfg = animatedProps.get(prop);
if (animation) {
if (cfg && animation.active()) {
animation.update(cfg, value, date);
continue;
} else {
animation.cancel();
}
}
if (!cfg || !cfg.duration) {
target[prop] = value;
continue;
}
running[prop] = animation = new Animation(cfg, target, prop, value);
animations.push(animation);
}
return animations;
}
update(target, values) {
if (this._properties.size === 0) {
Object.assign(target, values);
return;
}
const animations = this._createAnimations(target, values);
if (animations.length) {
animator.add(this._chart, animations);
return true;
}
}
}
function awaitAll(animations, properties) {
const running = [];
const keys = Object.keys(properties);
for (let i = 0; i < keys.length; i++) {
const anim = animations[keys[i]];
if (anim && anim.active()) {
running.push(anim.wait());
}
}
return Promise.all(running);
}
function resolveTargetOptions(target, newOptions) {
if (!newOptions) {
return;
}
let options = target.options;
if (!options) {
target.options = newOptions;
return;
}
if (options.$shared) {
target.options = options = Object.assign({}, options, {$shared: false, $animations: {}});
}
return options;
}
function scaleClip(scale, allowedOverflow) {
const opts = scale && scale.options || {};
const reverse = opts.reverse;
const min = opts.min === undefined ? allowedOverflow : 0;
const max = opts.max === undefined ? allowedOverflow : 0;
return {
start: reverse ? max : min,
end: reverse ? min : max
};
}
function defaultClip(xScale, yScale, allowedOverflow) {
if (allowedOverflow === false) {
return false;
}
const x = scaleClip(xScale, allowedOverflow);
const y = scaleClip(yScale, allowedOverflow);
return {
top: y.end,
right: x.end,
bottom: y.start,
left: x.start
};
}
function toClip(value) {
let t, r, b, l;
if (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,
disabled: value === false
};
}
function getSortedDatasetIndices(chart, filterVisible) {
const keys = [];
const metasets = chart._getSortedDatasetMetas(filterVisible);
let i, ilen;
for (i = 0, ilen = metasets.length; i < ilen; ++i) {
keys.push(metasets[i].index);
}
return keys;
}
function applyStack(stack, value, dsIndex, options) {
const keys = stack.keys;
const singleMode = options.mode === 'single';
let i, ilen, datasetIndex, otherValue;
if (value === null) {
return;
}
for (i = 0, ilen = keys.length; i < ilen; ++i) {
datasetIndex = +keys[i];
if (datasetIndex === dsIndex) {
if (options.all) {
continue;
}
break;
}
otherValue = stack.values[datasetIndex];
if (isNumberFinite(otherValue) && (singleMode || (value === 0 || sign(value) === sign(otherValue)))) {
value += otherValue;
}
}
return value;
}
function convertObjectDataToArray(data) {
const keys = Object.keys(data);
const adata = new Array(keys.length);
let i, ilen, key;
for (i = 0, ilen = keys.length; i < ilen; ++i) {
key = keys[i];
adata[i] = {
x: key,
y: data[key]
};
}
return adata;
}
function isStacked(scale, meta) {
const stacked = scale && scale.options.stacked;
return stacked || (stacked === undefined && meta.stack !== undefined);
}
function getStackKey(indexScale, valueScale, meta) {
return `${indexScale.id}.${valueScale.id}.${meta.stack || meta.type}`;
}
function getUserBounds(scale) {
const {min, max, minDefined, maxDefined} = scale.getUserBounds();
return {
min: minDefined ? min : Number.NEGATIVE_INFINITY,
max: maxDefined ? max : Number.POSITIVE_INFINITY
};
}
function getOrCreateStack(stacks, stackKey, indexValue) {
const subStack = stacks[stackKey] || (stacks[stackKey] = {});
return subStack[indexValue] || (subStack[indexValue] = {});
}
function getLastIndexInStack(stack, vScale, positive) {
for (const meta of vScale.getMatchingVisibleMetas('bar').reverse()) {
const value = stack[meta.index];
if ((positive && value > 0) || (!positive && value < 0)) {
return meta.index;
}
}
return null;
}
function updateStacks(controller, parsed) {
const {chart, _cachedMeta: meta} = controller;
const stacks = chart._stacks || (chart._stacks = {});
const {iScale, vScale, index: datasetIndex} = meta;
const iAxis = iScale.axis;
const vAxis = vScale.axis;
const key = getStackKey(iScale, vScale, meta);
const ilen = parsed.length;
let stack;
for (let i = 0; i < ilen; ++i) {
const item = parsed[i];
const {[iAxis]: index, [vAxis]: value} = item;
const itemStacks = item._stacks || (item._stacks = {});
stack = itemStacks[vAxis] = getOrCreateStack(stacks, key, index);
stack[datasetIndex] = value;
stack._top = getLastIndexInStack(stack, vScale, true);
stack._bottom = getLastIndexInStack(stack, vScale, false);
}
}
function getFirstScaleId(chart, axis) {
const scales = chart.scales;
return Object.keys(scales).filter(key => scales[key].axis === axis).shift();
}
function createDatasetContext(parent, index) {
return Object.assign(Object.create(parent),
{
active: false,
dataset: undefined,
datasetIndex: index,
index,
mode: 'default',
type: 'dataset'
}
);
}
function createDataContext(parent, index, element) {
return Object.assign(Object.create(parent), {
active: false,
dataIndex: index,
parsed: undefined,
raw: undefined,
element,
index,
mode: 'default',
type: 'data'
});
}
function clearStacks(meta, items) {
const datasetIndex = meta.controller.index;
const axis = meta.vScale && meta.vScale.axis;
if (!axis) {
return;
}
items = items || meta._parsed;
for (const parsed of items) {
const stacks = parsed._stacks;
if (!stacks || stacks[axis] === undefined || stacks[axis][datasetIndex] === undefined) {
return;
}
delete stacks[axis][datasetIndex];
}
}
const isDirectUpdateMode = (mode) => mode === 'reset' || mode === 'none';
const cloneIfNotShared = (cached, shared) => shared ? cached : Object.assign({}, cached);
class DatasetController {
constructor(chart, datasetIndex) {
this.chart = chart;
this._ctx = chart.ctx;
this.index = datasetIndex;
this._cachedDataOpts = {};
this._cachedMeta = this.getMeta();
this._type = this._cachedMeta.type;
this.options = undefined;
this._parsing = false;
this._data = undefined;
this._objectData = undefined;
this._sharedOptions = undefined;
this._drawStart = undefined;
this._drawCount = undefined;
this.enableOptionSharing = false;
this.$context = undefined;
this._syncList = [];
this.initialize();
}
initialize() {
const me = this;
const meta = me._cachedMeta;
me.configure();
me.linkScales();
meta._stacked = isStacked(meta.vScale, meta);
me.addElements();
}
updateIndex(datasetIndex) {
if (this.index !== datasetIndex) {
clearStacks(this._cachedMeta);
}
this.index = datasetIndex;
}
linkScales() {
const me = this;
const chart = me.chart;
const meta = me._cachedMeta;
const dataset = me.getDataset();
const chooseId = (axis, x, y, r) => axis === 'x' ? x : axis === 'r' ? r : y;
const xid = meta.xAxisID = valueOrDefault(dataset.xAxisID, getFirstScaleId(chart, 'x'));
const yid = meta.yAxisID = valueOrDefault(dataset.yAxisID, getFirstScaleId(chart, 'y'));
const rid = meta.rAxisID = valueOrDefault(dataset.rAxisID, getFirstScaleId(chart, 'r'));
const indexAxis = meta.indexAxis;
const iid = meta.iAxisID = chooseId(indexAxis, xid, yid, rid);
const vid = meta.vAxisID = chooseId(indexAxis, yid, xid, rid);
meta.xScale = me.getScaleForId(xid);
meta.yScale = me.getScaleForId(yid);
meta.rScale = me.getScaleForId(rid);
meta.iScale = me.getScaleForId(iid);
meta.vScale = me.getScaleForId(vid);
}
getDataset() {
return this.chart.data.datasets[this.index];
}
getMeta() {
return this.chart.getDatasetMeta(this.index);
}
getScaleForId(scaleID) {
return this.chart.scales[scaleID];
}
_getOtherScale(scale) {
const meta = this._cachedMeta;
return scale === meta.iScale
? meta.vScale
: meta.iScale;
}
reset() {
this._update('reset');
}
_destroy() {
const meta = this._cachedMeta;
if (this._data) {
unlistenArrayEvents(this._data, this);
}
if (meta._stacked) {
clearStacks(meta);
}
}
_dataCheck() {
const me = this;
const dataset = me.getDataset();
const data = dataset.data || (dataset.data = []);
const _data = me._data;
if (isObject(data)) {
me._data = convertObjectDataToArray(data);
} else if (_data !== data) {
if (_data) {
unlistenArrayEvents(_data, me);
const meta = me._cachedMeta;
clearStacks(meta);
meta._parsed = [];
}
if (data && Object.isExtensible(data)) {
listenArrayEvents(data, me);
}
me._syncList = [];
me._data = data;
}
}
addElements() {
const me = this;
const meta = me._cachedMeta;
me._dataCheck();
if (me.datasetElementType) {
meta.dataset = new me.datasetElementType();
}
}
buildOrUpdateElements(resetNewElements) {
const me = this;
const meta = me._cachedMeta;
const dataset = me.getDataset();
let stackChanged = false;
me._dataCheck();
const oldStacked = meta._stacked;
meta._stacked = isStacked(meta.vScale, meta);
if (meta.stack !== dataset.stack) {
stackChanged = true;
clearStacks(meta);
meta.stack = dataset.stack;
}
me._resyncElements(resetNewElements);
if (stackChanged || oldStacked !== meta._stacked) {
updateStacks(me, meta._parsed);
}
}
configure() {
const me = this;
const config = me.chart.config;
const scopeKeys = config.datasetScopeKeys(me._type);
const scopes = config.getOptionScopes(me.getDataset(), scopeKeys, true);
me.options = config.createResolver(scopes, me.getContext());
me._parsing = me.options.parsing;
}
parse(start, count) {
const me = this;
const {_cachedMeta: meta, _data: data} = me;
const {iScale, _stacked} = meta;
const iAxis = iScale.axis;
let sorted = start === 0 && count === data.length ? true : meta._sorted;
let prev = start > 0 && meta._parsed[start - 1];
let i, cur, parsed;
if (me._parsing === false) {
meta._parsed = data;
meta._sorted = true;
parsed = data;
} else {
if (isArray(data[start])) {
parsed = me.parseArrayData(meta, data, start, count);
} else if (isObject(data[start])) {
parsed = me.parseObjectData(meta, data, start, count);
} else {
parsed = me.parsePrimitiveData(meta, data, start, count);
}
const isNotInOrderComparedToPrev = () => cur[iAxis] === null || (prev && cur[iAxis] < prev[iAxis]);
for (i = 0; i < count; ++i) {
meta._parsed[i + start] = cur = parsed[i];
if (sorted) {
if (isNotInOrderComparedToPrev()) {
sorted = false;
}
prev = cur;
}
}
meta._sorted = sorted;
}
if (_stacked) {
updateStacks(me, parsed);
}
}
parsePrimitiveData(meta, data, start, count) {
const {iScale, vScale} = meta;
const iAxis = iScale.axis;
const vAxis = vScale.axis;
const labels = iScale.getLabels();
const singleScale = iScale === vScale;
const parsed = new Array(count);
let i, ilen, index;
for (i = 0, ilen = count; i < ilen; ++i) {
index = i + start;
parsed[i] = {
[iAxis]: singleScale || iScale.parse(labels[index], index),
[vAxis]: vScale.parse(data[index], index)
};
}
return parsed;
}
parseArrayData(meta, data, start, count) {
const {xScale, yScale} = meta;
const parsed = new Array(count);
let i, ilen, index, item;
for (i = 0, ilen = count; i < ilen; ++i) {
index = i + start;
item = data[index];
parsed[i] = {
x: xScale.parse(item[0], index),
y: yScale.parse(item[1], index)
};
}
return parsed;
}
parseObjectData(meta, data, start, count) {
const {xScale, yScale} = meta;
const {xAxisKey = 'x', yAxisKey = 'y'} = this._parsing;
const parsed = new Array(count);
let i, ilen, index, item;
for (i = 0, ilen = count; i < ilen; ++i) {
index = i + start;
item = data[index];
parsed[i] = {
x: xScale.parse(resolveObjectKey(item, xAxisKey), index),
y: yScale.parse(resolveObjectKey(item, yAxisKey), index)
};
}
return parsed;
}
getParsed(index) {
return this._cachedMeta._parsed[index];
}
getDataElement(index) {
return this._cachedMeta.data[index];
}
applyStack(scale, parsed, mode) {
const chart = this.chart;
const meta = this._cachedMeta;
const value = parsed[scale.axis];
const stack = {
keys: getSortedDatasetIndices(chart, true),
values: parsed._stacks[scale.axis]
};
return applyStack(stack, value, meta.index, {mode});
}
updateRangeFromParsed(range, scale, parsed, stack) {
const parsedValue = parsed[scale.axis];
let value = parsedValue === null ? NaN : parsedValue;
const values = stack && parsed._stacks[scale.axis];
if (stack && values) {
stack.values = values;
range.min = Math.min(range.min, value);
range.max = Math.max(range.max, value);
value = applyStack(stack, parsedValue, this._cachedMeta.index, {all: true});
}
range.min = Math.min(range.min, value);
range.max = Math.max(range.max, value);
}
getMinMax(scale, canStack) {
const me = this;
const meta = me._cachedMeta;
const _parsed = meta._parsed;
const sorted = meta._sorted && scale === meta.iScale;
const ilen = _parsed.length;
const otherScale = me._getOtherScale(scale);
const stack = canStack && meta._stacked && {keys: getSortedDatasetIndices(me.chart, true), values: null};
const range = {min: Number.POSITIVE_INFINITY, max: Number.NEGATIVE_INFINITY};
const {min: otherMin, max: otherMax} = getUserBounds(otherScale);
let i, value, parsed, otherValue;
function _skip() {
parsed = _parsed[i];
value = parsed[scale.axis];
otherValue = parsed[otherScale.axis];
return !isNumberFinite(value) || otherMin > otherValue || otherMax < otherValue;
}
for (i = 0; i < ilen; ++i) {
if (_skip()) {
continue;
}
me.updateRangeFromParsed(range, scale, parsed, stack);
if (sorted) {
break;
}
}
if (sorted) {
for (i = ilen - 1; i >= 0; --i) {
if (_skip()) {
continue;
}
me.updateRangeFromParsed(range, scale, parsed, stack);
break;
}
}
return range;
}
getAllParsedValues(scale) {
const parsed = this._cachedMeta._parsed;
const values = [];
let i, ilen, value;
for (i = 0, ilen = parsed.length; i < ilen; ++i) {
value = parsed[i][scale.axis];
if (isNumberFinite(value)) {
values.push(value);
}
}
return values;
}
getMaxOverflow() {
return false;
}
getLabelAndValue(index) {
const me = this;
const meta = me._cachedMeta;
const iScale = meta.iScale;
const vScale = meta.vScale;
const parsed = me.getParsed(index);
return {
label: iScale ? '' + iScale.getLabelForValue(parsed[iScale.axis]) : '',
value: vScale ? '' + vScale.getLabelForValue(parsed[vScale.axis]) : ''
};
}
_update(mode) {
const me = this;
const meta = me._cachedMeta;
me.configure();
me._cachedDataOpts = {};
me.update(mode || 'default');
meta._clip = toClip(valueOrDefault(me.options.clip, defaultClip(meta.xScale, meta.yScale, me.getMaxOverflow())));
}
update(mode) {}
draw() {
const me = this;
const ctx = me._ctx;
const chart = me.chart;
const meta = me._cachedMeta;
const elements = meta.data || [];
const area = chart.chartArea;
const active = [];
const start = me._drawStart || 0;
const count = me._drawCount || (elements.length - start);
let i;
if (meta.dataset) {
meta.dataset.draw(ctx, area, start, count);
}
for (i = start; i < start + count; ++i) {
const element = elements[i];
if (element.hidden) {
continue;
}
if (element.active) {
active.push(element);
} else {
element.draw(ctx, area);
}
}
for (i = 0; i < active.length; ++i) {
active[i].draw(ctx, area);
}
}
getStyle(index, active) {
const mode = active ? 'active' : 'default';
return index === undefined && this._cachedMeta.dataset
? this.resolveDatasetElementOptions(mode)
: this.resolveDataElementOptions(index || 0, mode);
}
getContext(index, active, mode) {
const me = this;
const dataset = me.getDataset();
let context;
if (index >= 0 && index < me._cachedMeta.data.length) {
const element = me._cachedMeta.data[index];
context = element.$context ||
(element.$context = createDataContext(me.getContext(), index, element));
context.parsed = me.getParsed(index);
context.raw = dataset.data[index];
context.index = context.dataIndex = index;
} else {
context = me.$context ||
(me.$context = createDatasetContext(me.chart.getContext(), me.index));
context.dataset = dataset;
context.index = context.datasetIndex = me.index;
}
context.active = !!active;
context.mode = mode;
return context;
}
resolveDatasetElementOptions(mode) {
return this._resolveElementOptions(this.datasetElementType.id, mode);
}
resolveDataElementOptions(index, mode) {
return this._resolveElementOptions(this.dataElementType.id, mode, index);
}
_resolveElementOptions(elementType, mode = 'default', index) {
const me = this;
const active = mode === 'active';
const cache = me._cachedDataOpts;
const cacheKey = elementType + '-' + mode;
const cached = cache[cacheKey];
const sharing = me.enableOptionSharing && defined(index);
if (cached) {
return cloneIfNotShared(cached, sharing);
}
const config = me.chart.config;
const scopeKeys = config.datasetElementScopeKeys(me._type, elementType);
const prefixes = active ? [`${elementType}Hover`, 'hover', elementType, ''] : [elementType, ''];
const scopes = config.getOptionScopes(me.getDataset(), scopeKeys);
const names = Object.keys(defaults.elements[elementType]);
const context = () => me.getContext(index, active);
const values = config.resolveNamedOptions(scopes, names, context, prefixes);
if (values.$shared) {
values.$shared = sharing;
cache[cacheKey] = Object.freeze(cloneIfNotShared(values, sharing));
}
return values;
}
_resolveAnimations(index, transition, active) {
const me = this;
const chart = me.chart;
const cache = me._cachedDataOpts;
const cacheKey = `animation-${transition}`;
const cached = cache[cacheKey];
if (cached) {
return cached;
}
let options;
if (chart.options.animation !== false) {
const config = me.chart.config;
const scopeKeys = config.datasetAnimationScopeKeys(me._type, transition);
const scopes = config.getOptionScopes(me.getDataset(), scopeKeys);
options = config.createResolver(scopes, me.getContext(index, active, transition));
}
const animations = new Animations(chart, options && options.animations);
if (options && options._cacheable) {
cache[cacheKey] = Object.freeze(animations);
}
return animations;
}
getSharedOptions(options) {
if (!options.$shared) {
return;
}
return this._sharedOptions || (this._sharedOptions = Object.assign({}, options));
}
includeOptions(mode, sharedOptions) {
return !sharedOptions || isDirectUpdateMode(mode) || this.chart._animationsDisabled;
}
updateElement(element, index, properties, mode) {
if (isDirectUpdateMode(mode)) {
Object.assign(element, properties);
} else {
this._resolveAnimations(index, mode).update(element, properties);
}
}
updateSharedOptions(sharedOptions, mode, newOptions) {
if (sharedOptions && !isDirectUpdateMode(mode)) {
this._resolveAnimations(undefined, mode).update(sharedOptions, newOptions);
}
}
_setStyle(element, index, mode, active) {
element.active = active;
const options = this.getStyle(index, active);
this._resolveAnimations(index, mode, active).update(element, {
options: (!active && this.getSharedOptions(options)) || options
});
}
removeHoverStyle(element, datasetIndex, index) {
this._setStyle(element, index, 'active', false);
}
setHoverStyle(element, datasetIndex, index) {
this._setStyle(element, index, 'active', true);
}
_removeDatasetHoverStyle() {
const element = this._cachedMeta.dataset;
if (element) {
this._setStyle(element, undefined, 'active', false);
}
}
_setDatasetHoverStyle() {
const element = this._cachedMeta.dataset;
if (element) {
this._setStyle(element, undefined, 'active', true);
}
}
_resyncElements(resetNewElements) {
const me = this;
const data = me._data;
const elements = me._cachedMeta.data;
for (const [method, arg1, arg2] of me._syncList) {
me[method](arg1, arg2);
}
me._syncList = [];
const numMeta = elements.length;
const numData = data.length;
const count = Math.min(numData, numMeta);
if (count) {
me.parse(0, count);
}
if (numData > numMeta) {
me._insertElements(numMeta, numData - numMeta, resetNewElements);
} else if (numData < numMeta) {
me._removeElements(numData, numMeta - numData);
}
}
_insertElements(start, count, resetNewElements = true) {
const me = this;
const meta = me._cachedMeta;
const data = meta.data;
const end = start + count;
let i;
const move = (arr) => {
arr.length += count;
for (i = arr.length - 1; i >= end; i--) {
arr[i] = arr[i - count];
}
};
move(data);
for (i = start; i < end; ++i) {
data[i] = new me.dataElementType();
}
if (me._parsing) {
move(meta._parsed);
}
me.parse(start, count);
if (resetNewElements) {
me.updateElements(data, start, count, 'reset');
}
}
updateElements(element, start, count, mode) {}
_removeElements(start, count) {
const me = this;
const meta = me._cachedMeta;
if (me._parsing) {
const removed = meta._parsed.splice(start, count);
if (meta._stacked) {
clearStacks(meta, removed);
}
}
meta.data.splice(start, count);
}
_sync(args) {
if (this._parsing) {
this._syncList.push(args);
} else {
const [method, arg1, arg2] = args;
this[method](arg1, arg2);
}
}
_onDataPush() {
const count = arguments.length;
this._sync(['_insertElements', this.getDataset().data.length - count, count]);
}
_onDataPop() {
this._sync(['_removeElements', this._cachedMeta.data.length - 1, 1]);
}
_onDataShift() {
this._sync(['_removeElements', 0, 1]);
}
_onDataSplice(start, count) {
this._sync(['_removeElements', start, count]);
this._sync(['_insertElements', start, arguments.length - 2]);
}
_onDataUnshift() {
this._sync(['_insertElements', 0, arguments.length]);
}
}
DatasetController.defaults = {};
DatasetController.prototype.datasetElementType = null;
DatasetController.prototype.dataElementType = null;
class Element {
constructor() {
this.x = undefined;
this.y = undefined;
this.active = false;
this.options = undefined;
this.$animations = undefined;
}
tooltipPosition(useFinalPosition) {
const {x, y} = this.getProps(['x', 'y'], useFinalPosition);
return {x, y};
}
hasValue() {
return isNumber(this.x) && isNumber(this.y);
}
getProps(props, final) {
const me = this;
const anims = this.$animations;
if (!final || !anims) {
return me;
}
const ret = {};
props.forEach(prop => {
ret[prop] = anims[prop] && anims[prop].active() ? anims[prop]._to : me[prop];
});
return ret;
}
}
Element.defaults = {};
Element.defaultRoutes = undefined;
const formatters = {
values(value) {
return isArray(value) ? value : '' + value;
},
numeric(tickValue, index, ticks) {
if (tickValue === 0) {
return '0';
}
const locale = this.chart.options.locale;
let notation;
let delta = tickValue;
if (ticks.length > 1) {
const maxTick = Math.max(Math.abs(ticks[0].value), Math.abs(ticks[ticks.length - 1].value));
if (maxTick < 1e-4 || maxTick > 1e+15) {
notation = 'scientific';
}
delta = calculateDelta(tickValue, ticks);
}
const logDelta = log10(Math.abs(delta));
const numDecimal = Math.max(Math.min(-1 * Math.floor(logDelta), 20), 0);
const options = {notation, minimumFractionDigits: numDecimal, maximumFractionDigits: numDecimal};
Object.assign(options, this.options.ticks.format);
return formatNumber(tickValue, locale, options);
},
logarithmic(tickValue, index, ticks) {
if (tickValue === 0) {
return '0';
}
const remain = tickValue / (Math.pow(10, Math.floor(log10(tickValue))));
if (remain === 1 || remain === 2 || remain === 5) {
return formatters.numeric.call(this, tickValue, index, ticks);
}
return '';
}
};
function calculateDelta(tickValue, ticks) {
let delta = ticks.length > 3 ? ticks[2].value - ticks[1].value : ticks[1].value - ticks[0].value;
if (Math.abs(delta) >= 1 && tickValue !== Math.floor(tickValue)) {
delta = tickValue - Math.floor(tickValue);
}
return delta;
}
var Ticks = {formatters};
defaults.set('scale', {
display: true,
offset: false,
reverse: false,
beginAtZero: false,
bounds: 'ticks',
grace: 0,
grid: {
display: true,
lineWidth: 1,
drawBorder: true,
drawOnChartArea: true,
drawTicks: true,
tickLength: 8,
tickWidth: (_ctx, options) => options.lineWidth,
tickColor: (_ctx, options) => options.color,
offset: false,
borderDash: [],
borderDashOffset: 0.0,
borderWidth: 1
},
title: {
display: false,
text: '',
padding: {
top: 4,
bottom: 4
}
},
ticks: {
minRotation: 0,
maxRotation: 50,
mirror: false,
textStrokeWidth: 0,
textStrokeColor: '',
padding: 3,
display: true,
autoSkip: true,
autoSkipPadding: 3,
labelOffset: 0,
callback: Ticks.formatters.values,
minor: {},
major: {},
align: 'center',
crossAlign: 'near',
showLabelBackdrop: false,
backdropColor: 'rgba(255, 255, 255, 0.75)',
backdropPadding: 2,
}
});
defaults.route('scale.ticks', 'color', '', 'color');
defaults.route('scale.grid', 'color', '', 'borderColor');
defaults.route('scale.grid', 'borderColor', '', 'borderColor');
defaults.route('scale.title', 'color', '', 'color');
defaults.describe('scale', {
_fallback: false,
_scriptable: (name) => !name.startsWith('before') && !name.startsWith('after') && name !== 'callback' && name !== 'parser',
_indexable: (name) => name !== 'borderDash' && name !== 'tickBorderDash',
});
defaults.describe('scales', {
_fallback: 'scale',
});
defaults.describe('scale.ticks', {
_scriptable: (name) => name !== 'backdropPadding' && name !== 'callback',
_indexable: (name) => name !== 'backdropPadding',
});
function autoSkip(scale, ticks) {
const tickOpts = scale.options.ticks;
const ticksLimit = tickOpts.maxTicksLimit || determineMaxTicks(scale);
const majorIndices = tickOpts.major.enabled ? getMajorIndices(ticks) : [];
const numMajorIndices = majorIndices.length;
const first = majorIndices[0];
const last = majorIndices[numMajorIndices - 1];
const newTicks = [];
if (numMajorIndices > ticksLimit) {
skipMajors(ticks, newTicks, majorIndices, numMajorIndices / ticksLimit);
return newTicks;
}
const spacing = calculateSpacing(majorIndices, ticks, ticksLimit);
if (numMajorIndices > 0) {
let i, ilen;
const avgMajorSpacing = numMajorIndices > 1 ? Math.round((last - first) / (numMajorIndices - 1)) : null;
skip(ticks, newTicks, spacing, isNullOrUndef(avgMajorSpacing) ? 0 : first - avgMajorSpacing, first);
for (i = 0, ilen = numMajorIndices - 1; i < ilen; i++) {
skip(ticks, newTicks, spacing, majorIndices[i], majorIndices[i + 1]);
}
skip(ticks, newTicks, spacing, last, isNullOrUndef(avgMajorSpacing) ? ticks.length : last + avgMajorSpacing);
return newTicks;
}
skip(ticks, newTicks, spacing);
return newTicks;
}
function determineMaxTicks(scale) {
const offset = scale.options.offset;
const tickLength = scale._tickSize();
const maxScale = scale._length / tickLength + (offset ? 0 : 1);
const maxChart = scale._maxLength / tickLength;
return Math.floor(Math.min(maxScale, maxChart));
}
function calculateSpacing(majorIndices, ticks, ticksLimit) {
const evenMajorSpacing = getEvenSpacing(majorIndices);
const spacing = ticks.length / ticksLimit;
if (!evenMajorSpacing) {
return Math.max(spacing, 1);
}
const factors = _factorize(evenMajorSpacing);
for (let i = 0, ilen = factors.length - 1; i < ilen; i++) {
const factor = factors[i];
if (factor > spacing) {
return factor;
}
}
return Math.max(spacing, 1);
}
function getMajorIndices(ticks) {
const result = [];
let i, ilen;
for (i = 0, ilen = ticks.length; i < ilen; i++) {
if (ticks[i].major) {
result.push(i);
}
}
return result;
}
function skipMajors(ticks, newTicks, majorIndices, spacing) {
let count = 0;
let next = majorIndices[0];
let i;
spacing = Math.ceil(spacing);
for (i = 0; i < ticks.length; i++) {
if (i === next) {
newTicks.push(ticks[i]);
count++;
next = majorIndices[count * spacing];
}
}
}
function skip(ticks, newTicks, spacing, majorStart, majorEnd) {
const start = valueOrDefault(majorStart, 0);
const end = Math.min(valueOrDefault(majorEnd, ticks.length), ticks.length);
let count = 0;
let length, i, 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++) {
if (i === next) {
newTicks.push(ticks[i]);
count++;
next = Math.round(start + count * spacing);
}
}
}
function getEvenSpacing(arr) {
const len = arr.length;
let 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;
}
const reverseAlign = (align) => align === 'left' ? 'right' : align === 'right' ? 'left' : align;
const offsetFromEdge = (scale, edge, offset) => edge === 'top' || edge === 'left' ? scale[edge] + offset : scale[edge] - offset;
function sample(arr, numItems) {
const result = [];
const increment = arr.length / numItems;
const len = arr.length;
let i = 0;
for (; i < len; i += increment) {
result.push(arr[Math.floor(i)]);
}
return result;
}
function getPixelForGridLine(scale, index, offsetGridLines) {
const length = scale.ticks.length;
const validIndex = Math.min(index, length - 1);
const start = scale._startPixel;
const end = scale._endPixel;
const epsilon = 1e-6;
let lineValue = scale.getPixelForTick(validIndex);
let 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;
if (lineValue < start - epsilon || lineValue > end + epsilon) {
return;
}
}
return lineValue;
}
function garbageCollect(caches, length) {
each(caches, (cache) => {
const gc = cache.gc;
const gcLen = gc.length / 2;
let i;
if (gcLen > length) {
for (i = 0; i < gcLen; ++i) {
delete cache.data[gc[i]];
}
gc.splice(0, gcLen);
}
});
}
function getTickMarkLength(options) {
return options.drawTicks ? options.tickLength : 0;
}
function getTitleHeight(options, fallback) {
if (!options.display) {
return 0;
}
const font = toFont(options.font, fallback);
const padding = toPadding(options.padding);
const lines = isArray(options.text) ? options.text.length : 1;
return (lines * font.lineHeight) + padding.height;
}
function createScaleContext(parent, scale) {
return Object.assign(Object.create(parent), {
scale,
type: 'scale'
});
}
function createTickContext(parent, index, tick) {
return Object.assign(Object.create(parent), {
tick,
index,
type: 'tick'
});
}
function titleAlign(align, position, reverse) {
let ret = _toLeftRightCenter(align);
if ((reverse && position !== 'right') || (!reverse && position === 'right')) {
ret = reverseAlign(ret);
}
return ret;
}
function titleArgs(scale, offset, position, align) {
const {top, left, bottom, right, chart} = scale;
const {chartArea, scales} = chart;
let rotation = 0;
let maxWidth, titleX, titleY;
const height = bottom - top;
const width = right - left;
if (scale.isHorizontal()) {
titleX = _alignStartEnd(align, left, right);
if (isObject(position)) {
const positionAxisID = Object.keys(position)[0];
const value = position[positionAxisID];
titleY = scales[positionAxisID].getPixelForValue(value) + height - offset;
} else if (position === 'center') {
titleY = (chartArea.bottom + chartArea.top) / 2 + height - offset;
} else {
titleY = offsetFromEdge(scale, position, offset);
}
maxWidth = right - left;
} else {
if (isObject(position)) {
const positionAxisID = Object.keys(position)[0];
const value = position[positionAxisID];
titleX = scales[positionAxisID].getPixelForValue(value) - width + offset;
} else if (position === 'center') {
titleX = (chartArea.left + chartArea.right) / 2 - width + offset;
} else {
titleX = offsetFromEdge(scale, position, offset);
}
titleY = _alignStartEnd(align, bottom, top);
rotation = position === 'left' ? -HALF_PI : HALF_PI;
}
return {titleX, titleY, maxWidth, rotation};
}
class Scale extends Element {
constructor(cfg) {
super();
this.id = cfg.id;
this.type = cfg.type;
this.options = undefined;
this.ctx = cfg.ctx;
this.chart = cfg.chart;
this.top = undefined;
this.bottom = undefined;
this.left = undefined;
this.right = undefined;
this.width = undefined;
this.height = undefined;
this._margins = {
left: 0,
right: 0,
top: 0,
bottom: 0
};
this.maxWidth = undefined;
this.maxHeight = undefined;
this.paddingTop = undefined;
this.paddingBottom = undefined;
this.paddingLeft = undefined;
this.paddingRight = undefined;
this.axis = undefined;
this.labelRotation = undefined;
this.min = undefined;
this.max = undefined;
this._range = undefined;
this.ticks = [];
this._gridLineItems = null;
this._labelItems = null;
this._labelSizes = null;
this._length = 0;
this._maxLength = 0;
this._longestTextCache = {};
this._startPixel = undefined;
this._endPixel = undefined;
this._reversePixels = false;
this._userMax = undefined;
this._userMin = undefined;
this._suggestedMax = undefined;
this._suggestedMin = undefined;
this._ticksLength = 0;
this._borderValue = 0;
this._cache = {};
this._dataLimitsCached = false;
this.$context = undefined;
}
init(options) {
const me = this;
me.options = options.setContext(me.getContext());
me.axis = options.axis;
me._userMin = me.parse(options.min);
me._userMax = me.parse(options.max);
me._suggestedMin = me.parse(options.suggestedMin);
me._suggestedMax = me.parse(options.suggestedMax);
}
parse(raw, index) {
return raw;
}
getUserBounds() {
let {_userMin, _userMax, _suggestedMin, _suggestedMax} = this;
_userMin = finiteOrDefault(_userMin, Number.POSITIVE_INFINITY);
_userMax = finiteOrDefault(_userMax, Number.NEGATIVE_INFINITY);
_suggestedMin = finiteOrDefault(_suggestedMin, Number.POSITIVE_INFINITY);
_suggestedMax = finiteOrDefault(_suggestedMax, Number.NEGATIVE_INFINITY);
return {
min: finiteOrDefault(_userMin, _suggestedMin),
max: finiteOrDefault(_userMax, _suggestedMax),
minDefined: isNumberFinite(_userMin),
maxDefined: isNumberFinite(_userMax)
};
}
getMinMax(canStack) {
const me = this;
let {min, max, minDefined, maxDefined} = me.getUserBounds();
let range;
if (minDefined && maxDefined) {
return {min, max};
}
const metas = me.getMatchingVisibleMetas();
for (let i = 0, ilen = metas.length; i < ilen; ++i) {
range = metas[i].controller.getMinMax(me, canStack);
if (!minDefined) {
min = Math.min(min, range.min);
}
if (!maxDefined) {
max = Math.max(max, range.max);
}
}
return {
min: finiteOrDefault(min, finiteOrDefault(max, min)),
max: finiteOrDefault(max, finiteOrDefault(min, max))
};
}
getPadding() {
const me = this;
return {
left: me.paddingLeft || 0,
top: me.paddingTop || 0,
right: me.paddingRight || 0,
bottom: me.paddingBottom || 0
};
}
getTicks() {
return this.ticks;
}
getLabels() {
const data = this.chart.data;
return this.options.labels || (this.isHorizontal() ? data.xLabels : data.yLabels) || data.labels || [];
}
beforeLayout() {
this._cache = {};
this._dataLimitsCached = false;
}
beforeUpdate() {
callback(this.options.beforeUpdate, [this]);
}
update(maxWidth, maxHeight, margins) {
const me = this;
const tickOpts = me.options.ticks;
const sampleSize = tickOpts.sampleSize;
me.beforeUpdate();
me.maxWidth = maxWidth;
me.maxHeight = maxHeight;
me._margins = margins = Object.assign({
left: 0,
right: 0,
top: 0,
bottom: 0
}, margins);
me.ticks = null;
me._labelSizes = null;
me._gridLineItems = null;
me._labelItems = null;
me.beforeSetDimensions();
me.setDimensions();
me.afterSetDimensions();
me._maxLength = me.isHorizontal()
? me.width + margins.left + margins.right
: me.height + margins.top + margins.bottom;
if (!me._dataLimitsCached) {
me.beforeDataLimits();
me.determineDataLimits();
me.afterDataLimits();
me._range = _addGrace(me, me.options.grace);
me._dataLimitsCached = true;
}
me.beforeBuildTicks();
me.ticks = me.buildTicks() || [];
me.afterBuildTicks();
const samplingEnabled = sampleSize < me.ticks.length;
me._convertTicksToLabels(samplingEnabled ? sample(me.ticks, sampleSize) : me.ticks);
me.configure();
me.beforeCalculateLabelRotation();
me.calculateLabelRotation();
me.afterCalculateLabelRotation();
if (tickOpts.display && (tickOpts.autoSkip || tickOpts.source === 'auto')) {
me.ticks = autoSkip(me, me.ticks);
me._labelSizes = null;
}
if (samplingEnabled) {
me._convertTicksToLabels(me.ticks);
}
me.beforeFit();
me.fit();
me.afterFit();
me.afterUpdate();
}
configure() {
const me = this;
let reversePixels = me.options.reverse;
let startPixel, endPixel;
if (me.isHorizontal()) {
startPixel = me.left;
endPixel = me.right;
} else {
startPixel = me.top;
endPixel = me.bottom;
reversePixels = !reversePixels;
}
me._startPixel = startPixel;
me._endPixel = endPixel;
me._reversePixels = reversePixels;
me._length = endPixel - startPixel;
me._alignToPixels = me.options.alignToPixels;
}
afterUpdate() {
callback(this.options.afterUpdate, [this]);
}
beforeSetDimensions() {
callback(this.options.beforeSetDimensions, [this]);
}
setDimensions() {
const me = this;
if (me.isHorizontal()) {
me.width = me.maxWidth;
me.left = 0;
me.right = me.width;
} else {
me.height = me.maxHeight;
me.top = 0;
me.bottom = me.height;
}
me.paddingLeft = 0;
me.paddingTop = 0;
me.paddingRight = 0;
me.paddingBottom = 0;
}
afterSetDimensions() {
callback(this.options.afterSetDimensions, [this]);
}
_callHooks(name) {
const me = this;
me.chart.notifyPlugins(name, me.getContext());
callback(me.options[name], [me]);
}
beforeDataLimits() {
this._callHooks('beforeDataLimits');
}
determineDataLimits() {}
afterDataLimits() {
this._callHooks('afterDataLimits');
}
beforeBuildTicks() {
this._callHooks('beforeBuildTicks');
}
buildTicks() {
return [];
}
afterBuildTicks() {
this._callHooks('afterBuildTicks');
}
beforeTickToLabelConversion() {
callback(this.options.beforeTickToLabelConversion, [this]);
}
generateTickLabels(ticks) {
const me = this;
const tickOpts = me.options.ticks;
let i, ilen, tick;
for (i = 0, ilen = ticks.length; i < ilen; i++) {
tick = ticks[i];
tick.label = callback(tickOpts.callback, [tick.value, i, ticks], me);
}
}
afterTickToLabelConversion() {
callback(this.options.afterTickToLabelConversion, [this]);
}
beforeCalculateLabelRotation() {
callback(this.options.beforeCalculateLabelRotation, [this]);
}
calculateLabelRotation() {
const me = this;
const options = me.options;
const tickOpts = options.ticks;
const numTicks = me.ticks.length;
const minRotation = tickOpts.minRotation || 0;
const maxRotation = tickOpts.maxRotation;
let labelRotation = minRotation;
let tickWidth, maxHeight, maxLabelDiagonal;
if (!me._isVisible() || !tickOpts.display || minRotation >= maxRotation || numTicks <= 1 || !me.isHorizontal()) {
me.labelRotation = minRotation;
return;
}
const labelSizes = me._getLabelSizes();
const maxLabelWidth = labelSizes.widest.width;
const maxLabelHeight = labelSizes.highest.height;
const maxWidth = _limitValue(me.chart.width - maxLabelWidth, 0, me.maxWidth);
tickWidth = options.offset ? me.maxWidth / numTicks : maxWidth / (numTicks - 1);
if (maxLabelWidth + 6 > tickWidth) {
tickWidth = maxWidth / (numTicks - (options.offset ? 0.5 : 1));
maxHeight = me.maxHeight - getTickMarkLength(options.grid)
- tickOpts.padding - getTitleHeight(options.title, me.chart.options.font);
maxLabelDiagonal = Math.sqrt(maxLabelWidth * maxLabelWidth + maxLabelHeight * maxLabelHeight);
labelRotation = toDegrees(Math.min(
Math.asin(_limitValue((labelSizes.highest.height + 6) / tickWidth, -1, 1)),
Math.asin(_limitValue(maxHeight / maxLabelDiagonal, -1, 1)) - Math.asin(_limitValue(maxLabelHeight / maxLabelDiagonal, -1, 1))
));
labelRotation = Math.max(minRotation, Math.min(maxRotation, labelRotation));
}
me.labelRotation = labelRotation;
}
afterCalculateLabelRotation() {
callback(this.options.afterCalculateLabelRotation, [this]);
}
beforeFit() {
callback(this.options.beforeFit, [this]);
}
fit() {
const me = this;
const minSize = {
width: 0,
height: 0
};
const {chart, options: {ticks: tickOpts, title: titleOpts, grid: gridOpts}} = me;
const display = me._isVisible();
const isHorizontal = me.isHorizontal();
if (display) {
const titleHeight = getTitleHeight(titleOpts, chart.options.font);
if (isHorizontal) {
minSize.width = me.maxWidth;
minSize.height = getTickMarkLength(gridOpts) + titleHeight;
} else {
minSize.height = me.maxHeight;
minSize.width = getTickMarkLength(gridOpts) + titleHeight;
}
if (tickOpts.display && me.ticks.length) {
const {first, last, widest, highest} = me._getLabelSizes();
const tickPadding = tickOpts.padding * 2;
const angleRadians = toRadians(me.labelRotation);
const cos = Math.cos(angleRadians);
const sin = Math.sin(angleRadians);
if (isHorizontal) {
const labelHeight = tickOpts.mirror ? 0 : sin * widest.width + cos * highest.height;
minSize.height = Math.min(me.maxHeight, minSize.height + labelHeight + tickPadding);
} else {
const labelWidth = tickOpts.mirror ? 0 : cos * widest.width + sin * highest.height;
minSize.width = Math.min(me.maxWidth, minSize.width + labelWidth + tickPadding);
}
me._calculatePadding(first, last, sin, cos);
}
}
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;
}
}
_calculatePadding(first, last, sin, cos) {
const me = this;
const {ticks: {align, padding}, position} = me.options;
const isRotated = me.labelRotation !== 0;
const labelsBelowTicks = position !== 'top' && me.axis === 'x';
if (me.isHorizontal()) {
const offsetLeft = me.getPixelForTick(0) - me.left;
const offsetRight = me.right - me.getPixelForTick(me.ticks.length - 1);
let paddingLeft = 0;
let paddingRight = 0;
if (isRotated) {
if (labelsBelowTicks) {
paddingLeft = cos * first.width;
paddingRight = sin * last.height;
} else {
paddingLeft = sin * first.height;
paddingRight = cos * last.width;
}
} else if (align === 'start') {
paddingRight = last.width;
} else if (align === 'end') {
paddingLeft = first.width;
} else {
paddingLeft = first.width / 2;
paddingRight = last.width / 2;
}
me.paddingLeft = Math.max((paddingLeft - offsetLeft + padding) * me.width / (me.width - offsetLeft), 0);
me.paddingRight = Math.max((paddingRight - offsetRight + padding) * me.width / (me.width - offsetRight), 0);
} else {
let paddingTop = last.height / 2;
let paddingBottom = first.height / 2;
if (align === 'start') {
paddingTop = 0;
paddingBottom = first.height;
} else if (align === 'end') {
paddingTop = last.height;
paddingBottom = 0;
}
me.paddingTop = paddingTop + padding;
me.paddingBottom = paddingBottom + padding;
}
}
_handleMargins() {
const 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() {
callback(this.options.afterFit, [this]);
}
isHorizontal() {
const {axis, position} = this.options;
return position === 'top' || position === 'bottom' || axis === 'x';
}
isFullSize() {
return this.options.fullSize;
}
_convertTicksToLabels(ticks) {
const me = this;
me.beforeTickToLabelConversion();
me.generateTickLabels(ticks);
let i, ilen;
for (i = 0, ilen = ticks.length; i < ilen; i++) {
if (isNullOrUndef(ticks[i].label)) {
ticks.splice(i, 1);
ilen--;
i--;
}
}
me.afterTickToLabelConversion();
}
_getLabelSizes() {
const me = this;
let labelSizes = me._labelSizes;
if (!labelSizes) {
const sampleSize = me.options.ticks.sampleSize;
let ticks = me.ticks;
if (sampleSize < ticks.length) {
ticks = sample(ticks, sampleSize);
}
me._labelSizes = labelSizes = me._computeLabelSizes(ticks, ticks.length);
}
return labelSizes;
}
_computeLabelSizes(ticks, length) {
const {ctx, _longestTextCache: caches} = this;
const widths = [];
const heights = [];
let widestLabelSize = 0;
let highestLabelSize = 0;
let i, j, jlen, label, tickFont, fontString, cache, lineHeight, width, height, nestedLabel;
for (i = 0; i < length; ++i) {
label = ticks[i].label;
tickFont = this._resolveTickFontOptions(i);
ctx.font = fontString = tickFont.string;
cache = caches[fontString] = caches[fontString] || {data: {}, gc: []};
lineHeight = tickFont.lineHeight;
width = height = 0;
if (!isNullOrUndef(label) && !isArray(label)) {
width = _measureText(ctx, cache.data, cache.gc, width, label);
height = lineHeight;
} else if (isArray(label)) {
for (j = 0, jlen = label.length; j < jlen; ++j) {
nestedLabel = label[j];
if (!isNullOrUndef(nestedLabel) && !isArray(nestedLabel)) {
width = _measureText(ctx, cache.data, cache.gc, width, nestedLabel);
height += lineHeight;
}
}
}
widths.push(width);
heights.push(height);
widestLabelSize = Math.max(width, widestLabelSize);
highestLabelSize = Math.max(height, highestLabelSize);
}
garbageCollect(caches, length);
const widest = widths.indexOf(widestLabelSize);
const highest = heights.indexOf(highestLabelSize);
const valueAt = (idx) => ({width: widths[idx] || 0, height: heights[idx] || 0});
return {
first: valueAt(0),
last: valueAt(length - 1),
widest: valueAt(widest),
highest: valueAt(highest),
widths,
heights,
};
}
getLabelForValue(value) {
return value;
}
getPixelForValue(value, index) {
return NaN;
}
getValueForPixel(pixel) {}
getPixelForTick(index) {
const ticks = this.ticks;
if (index < 0 || index > ticks.length - 1) {
return null;
}
return this.getPixelForValue(ticks[index].value);
}
getPixelForDecimal(decimal) {
const me = this;
if (me._reversePixels) {
decimal = 1 - decimal;
}
const pixel = me._startPixel + decimal * me._length;
return _int16Range(me._alignToPixels ? _alignPixel(me.chart, pixel, 0) : pixel);
}
getDecimalForPixel(pixel) {
const decimal = (pixel - this._startPixel) / this._length;
return this._reversePixels ? 1 - decimal : decimal;
}
getBasePixel() {
return this.getPixelForValue(this.getBaseValue());
}
getBaseValue() {
const {min, max} = this;
return min < 0 && max < 0 ? max :
min > 0 && max > 0 ? min :
0;
}
getContext(index) {
const me = this;
const ticks = me.ticks || [];
if (index >= 0 && index < ticks.length) {
const tick = ticks[index];
return tick.$context ||
(tick.$context = createTickContext(me.getContext(), index, tick));
}
return me.$context ||
(me.$context = createScaleContext(me.chart.getContext(), me));
}
_tickSize() {
const me = this;
const optionTicks = me.options.ticks;
const rot = toRadians(me.labelRotation);
const cos = Math.abs(Math.cos(rot));
const sin = Math.abs(Math.sin(rot));
const labelSizes = me._getLabelSizes();
const padding = optionTicks.autoSkipPadding || 0;
const w = labelSizes ? labelSizes.widest.width + padding : 0;
const h = labelSizes ? labelSizes.highest.height + padding : 0;
return me.isHorizontal()
? h * cos > w * sin ? w / cos : h / sin
: h * sin < w * cos ? h / cos : w / sin;
}
_isVisible() {
const display = this.options.display;
if (display !== 'auto') {
return !!display;
}
return this.getMatchingVisibleMetas().length > 0;
}
_computeGridLineItems(chartArea) {
const me = this;
const axis = me.axis;
const chart = me.chart;
const options = me.options;
const {grid, position} = options;
const offset = grid.offset;
const isHorizontal = me.isHorizontal();
const ticks = me.ticks;
const ticksLength = ticks.length + (offset ? 1 : 0);
const tl = getTickMarkLength(grid);
const items = [];
const borderOpts = grid.setContext(me.getContext());
const axisWidth = borderOpts.drawBorder ? borderOpts.borderWidth : 0;
const axisHalfWidth = axisWidth / 2;
const alignBorderValue = function(pixel) {
return _alignPixel(chart, pixel, axisWidth);
};
let borderValue, i, lineValue, alignedLineValue;
let tx1, ty1, tx2, ty2, x1, y1, x2, y2;
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 if (position === 'right') {
borderValue = alignBorderValue(me.left);
x1 = chartArea.left;
x2 = alignBorderValue(chartArea.right) - axisHalfWidth;
tx1 = borderValue + axisHalfWidth;
tx2 = me.left + tl;
} else if (axis === 'x') {
if (position === 'center') {
borderValue = alignBorderValue((chartArea.top + chartArea.bottom) / 2 + 0.5);
} else if (isObject(position)) {
const positionAxisID = Object.keys(position)[0];
const value = position[positionAxisID];
borderValue = alignBorderValue(me.chart.scales[positionAxisID].getPixelForValue(value));
}
y1 = chartArea.top;
y2 = chartArea.bottom;
ty1 = borderValue + axisHalfWidth;
ty2 = ty1 + tl;
} else if (axis === 'y') {
if (position === 'center') {
borderValue = alignBorderValue((chartArea.left + chartArea.right) / 2);
} else if (isObject(position)) {
const positionAxisID = Object.keys(position)[0];
const value = position[positionAxisID];
borderValue = alignBorderValue(me.chart.scales[positionAxisID].getPixelForValue(value));
}
tx1 = borderValue - axisHalfWidth;
tx2 = tx1 - tl;
x1 = chartArea.left;
x2 = chartArea.right;
}
const limit = valueOrDefault(options.ticks.maxTicksLimit, ticksLength);
const step = Math.max(1, Math.ceil(ticksLength / limit));
for (i = 0; i < ticksLength; i += step) {
const optsAtIndex = grid.setContext(me.getContext(i));
const lineWidth = optsAtIndex.lineWidth;
const lineColor = optsAtIndex.color;
const borderDash = grid.borderDash || [];
const borderDashOffset = optsAtIndex.borderDashOffset;
const tickWidth = optsAtIndex.tickWidth;
const tickColor = optsAtIndex.tickColor;
const tickBorderDash = optsAtIndex.tickBorderDash || [];
const tickBorderDashOffset = optsAtIndex.tickBorderDashOffset;
lineValue = getPixelForGridLine(me, i, offset);
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,
ty1,
tx2,
ty2,
x1,
y1,
x2,
y2,
width: lineWidth,
color: lineColor,
borderDash,
borderDashOffset,
tickWidth,
tickColor,
tickBorderDash,
tickBorderDashOffset,
});
}
me._ticksLength = ticksLength;
me._borderValue = borderValue;
return items;
}
_computeLabelItems(chartArea) {
const me = this;
const axis = me.axis;
const options = me.options;
const {position, ticks: optionTicks} = options;
const isHorizontal = me.isHorizontal();
const ticks = me.ticks;
const {align, crossAlign, padding, mirror} = optionTicks;
const tl = getTickMarkLength(options.grid);
const tickAndPadding = tl + padding;
const hTickAndPadding = mirror ? -padding : tickAndPadding;
const rotation = -toRadians(me.labelRotation);
const items = [];
let i, ilen, tick, label, x, y, textAlign, pixel, font, lineHeight, lineCount, textOffset;
let textBaseline = 'middle';
if (position === 'top') {
y = me.bottom - hTickAndPadding;
textAlign = me._getXAxisLabelAlignment();
} else if (position === 'bottom') {
y = me.top + hTickAndPadding;
textAlign = me._getXAxisLabelAlignment();
} else if (position === 'left') {
const ret = me._getYAxisLabelAlignment(tl);
textAlign = ret.textAlign;
x = ret.x;
} else if (position === 'right') {
const ret = me._getYAxisLabelAlignment(tl);
textAlign = ret.textAlign;
x = ret.x;
} else if (axis === 'x') {
if (position === 'center') {
y = ((chartArea.top + chartArea.bottom) / 2) + tickAndPadding;
} else if (isObject(position)) {
const positionAxisID = Object.keys(position)[0];
const value = position[positionAxisID];
y = me.chart.scales[positionAxisID].getPixelForValue(value) + tickAndPadding;
}
textAlign = me._getXAxisLabelAlignment();
} else if (axis === 'y') {
if (position === 'center') {
x = ((chartArea.left + chartArea.right) / 2) - tickAndPadding;
} else if (isObject(position)) {
const positionAxisID = Object.keys(position)[0];
const value = position[positionAxisID];
x = me.chart.scales[positionAxisID].getPixelForValue(value);
}
textAlign = me._getYAxisLabelAlignment(tl).textAlign;
}
if (axis === 'y') {
if (align === 'start') {
textBaseline = 'top';
} else if (align === 'end') {
textBaseline = 'bottom';
}
}
const labelSizes = me._getLabelSizes();
for (i = 0, ilen = ticks.length; i < ilen; ++i) {
tick = ticks[i];
label = tick.label;
const optsAtIndex = optionTicks.setContext(me.getContext(i));
pixel = me.getPixelForTick(i) + optionTicks.labelOffset;
font = me._resolveTickFontOptions(i);
lineHeight = font.lineHeight;
lineCount = isArray(label) ? label.length : 1;
const halfCount = lineCount / 2;
const color = optsAtIndex.color;
const strokeColor = optsAtIndex.textStrokeColor;
const strokeWidth = optsAtIndex.textStrokeWidth;
if (isHorizontal) {
x = pixel;
if (position === 'top') {
if (crossAlign === 'near' || rotation !== 0) {
textOffset = -lineCount * lineHeight + lineHeight / 2;
} else if (crossAlign === 'center') {
textOffset = -labelSizes.highest.height / 2 - halfCount * lineHeight + lineHeight;
} else {
textOffset = -labelSizes.highest.height + lineHeight / 2;
}
} else {
if (crossAlign === 'near' || rotation !== 0) {
textOffset = lineHeight / 2;
} else if (crossAlign === 'center') {
textOffset = labelSizes.highest.height / 2 - halfCount * lineHeight;
} else {
textOffset = labelSizes.highest.height - lineCount * lineHeight;
}
}
if (mirror) {
textOffset *= -1;
}
} else {
y = pixel;
textOffset = (1 - lineCount) * lineHeight / 2;
}
let backdrop;
if (optsAtIndex.showLabelBackdrop) {
const labelPadding = toPadding(optsAtIndex.backdropPadding);
const height = labelSizes.heights[i];
const width = labelSizes.widths[i];
let top = y + textOffset - labelPadding.top;
let left = x - labelPadding.left;
switch (textBaseline) {
case 'middle':
top -= height / 2;
break;
case 'bottom':
top -= height;
break;
}
switch (textAlign) {
case 'center':
left -= width / 2;
break;
case 'right':
left -= width;
break;
}
backdrop = {
left,
top,
width: width + labelPadding.width,
height: height + labelPadding.height,
color: optsAtIndex.backdropColor,
};
}
items.push({
rotation,
label,
font,
color,
strokeColor,
strokeWidth,
textOffset,
textAlign,
textBaseline,
translation: [x, y],
backdrop,
});
}
return items;
}
_getXAxisLabelAlignment() {
const me = this;
const {position, ticks} = me.options;
const rotation = -toRadians(me.labelRotation);
if (rotation) {
return position === 'top' ? 'left' : 'right';
}
let align = 'center';
if (ticks.align === 'start') {
align = 'left';
} else if (ticks.align === 'end') {
align = 'right';
}
return align;
}
_getYAxisLabelAlignment(tl) {
const me = this;
const {position, ticks: {crossAlign, mirror, padding}} = me.options;
const labelSizes = me._getLabelSizes();
const tickAndPadding = tl + padding;
const widest = labelSizes.widest.width;
let textAlign;
let x;
if (position === 'left') {
if (mirror) {
x = me.right + padding;
if (crossAlign === 'near') {
textAlign = 'left';
} else if (crossAlign === 'center') {
textAlign = 'center';
x += (widest / 2);
} else {
textAlign = 'right';
x += widest;
}
} else {
x = me.right - tickAndPadding;
if (crossAlign === 'near') {
textAlign = 'right';
} else if (crossAlign === 'center') {
textAlign = 'center';
x -= (widest / 2);
} else {
textAlign = 'left';
x = me.left;
}
}
} else if (position === 'right') {
if (mirror) {
x = me.left + padding;
if (crossAlign === 'near') {
textAlign = 'right';
} else if (crossAlign === 'center') {
textAlign = 'center';
x -= (widest / 2);
} else {
textAlign = 'left';
x -= widest;
}
} else {
x = me.left + tickAndPadding;
if (crossAlign === 'near') {
textAlign = 'left';
} else if (crossAlign === 'center') {
textAlign = 'center';
x += widest / 2;
} else {
textAlign = 'right';
x = me.right;
}
}
} else {
textAlign = 'right';
}
return {textAlign, x};
}
_computeLabelArea() {
const me = this;
if (me.options.ticks.mirror) {
return;
}
const chart = me.chart;
const position = me.options.position;
if (position === 'left' || position === 'right') {
return {top: 0, left: me.left, bottom: chart.height, right: me.right};
} if (position === 'top' || position === 'bottom') {
return {top: me.top, left: 0, bottom: me.bottom, right: chart.width};
}
}
drawBackground() {
const {ctx, options: {backgroundColor}, left, top, width, height} = this;
if (backgroundColor) {
ctx.save();
ctx.fillStyle = backgroundColor;
ctx.fillRect(left, top, width, height);
ctx.restore();
}
}
getLineWidthForValue(value) {
const me = this;
const grid = me.options.grid;
if (!me._isVisible() || !grid.display) {
return 0;
}
const ticks = me.ticks;
const index = ticks.findIndex(t => t.value === value);
if (index >= 0) {
const opts = grid.setContext(me.getContext(index));
return opts.lineWidth;
}
return 0;
}
drawGrid(chartArea) {
const me = this;
const grid = me.options.grid;
const ctx = me.ctx;
const items = me._gridLineItems || (me._gridLineItems = me._computeGridLineItems(chartArea));
let i, ilen;
const drawLine = (p1, p2, style) => {
if (!style.width || !style.color) {
return;
}
ctx.save();
ctx.lineWidth = style.width;
ctx.strokeStyle = style.color;
ctx.setLineDash(style.borderDash || []);
ctx.lineDashOffset = style.borderDashOffset;
ctx.beginPath();
ctx.moveTo(p1.x, p1.y);
ctx.lineTo(p2.x, p2.y);
ctx.stroke();
ctx.restore();
};
if (grid.display) {
for (i = 0, ilen = items.length; i < ilen; ++i) {
const item = items[i];
if (grid.drawOnChartArea) {
drawLine(
{x: item.x1, y: item.y1},
{x: item.x2, y: item.y2},
item
);
}
if (grid.drawTicks) {
drawLine(
{x: item.tx1, y: item.ty1},
{x: item.tx2, y: item.ty2},
{
color: item.tickColor,
width: item.tickWidth,
borderDash: item.tickBorderDash,
borderDashOffset: item.tickBorderDashOffset
}
);
}
}
}
}
drawBorder() {
const me = this;
const {chart, ctx, options: {grid}} = me;
const borderOpts = grid.setContext(me.getContext());
const axisWidth = grid.drawBorder ? borderOpts.borderWidth : 0;
if (!axisWidth) {
return;
}
const lastLineWidth = grid.setContext(me.getContext(0)).lineWidth;
const borderValue = me._borderValue;
let x1, x2, y1, y2;
if (me.isHorizontal()) {
x1 = _alignPixel(chart, me.left, axisWidth) - axisWidth / 2;
x2 = _alignPixel(chart, me.right, lastLineWidth) + lastLineWidth / 2;
y1 = y2 = borderValue;
} else {
y1 = _alignPixel(chart, me.top, axisWidth) - axisWidth / 2;
y2 = _alignPixel(chart, me.bottom, lastLineWidth) + lastLineWidth / 2;
x1 = x2 = borderValue;
}
ctx.save();
ctx.lineWidth = borderOpts.borderWidth;
ctx.strokeStyle = borderOpts.borderColor;
ctx.beginPath();
ctx.moveTo(x1, y1);
ctx.lineTo(x2, y2);
ctx.stroke();
ctx.restore();
}
drawLabels(chartArea) {
const me = this;
const optionTicks = me.options.ticks;
if (!optionTicks.display) {
return;
}
const ctx = me.ctx;
const area = me._computeLabelArea();
if (area) {
clipArea(ctx, area);
}
const items = me._labelItems || (me._labelItems = me._computeLabelItems(chartArea));
let i, ilen;
for (i = 0, ilen = items.length; i < ilen; ++i) {
const item = items[i];
const tickFont = item.font;
const label = item.label;
if (item.backdrop) {
ctx.fillStyle = item.backdrop.color;
ctx.fillRect(item.backdrop.left, item.backdrop.top, item.backdrop.width, item.backdrop.height);
}
let y = item.textOffset;
renderText(ctx, label, 0, y, tickFont, item);
}
if (area) {
unclipArea(ctx);
}
}
drawTitle() {
const {ctx, options: {position, title, reverse}} = this;
if (!title.display) {
return;
}
const font = toFont(title.font);
const padding = toPadding(title.padding);
const align = title.align;
let offset = font.lineHeight / 2;
if (position === 'bottom' || position === 'center' || isObject(position)) {
offset += padding.bottom;
if (isArray(title.text)) {
offset += font.lineHeight * (title.text.length - 1);
}
} else {
offset += padding.top;
}
const {titleX, titleY, maxWidth, rotation} = titleArgs(this, offset, position, align);
renderText(ctx, title.text, 0, 0, font, {
color: title.color,
maxWidth,
rotation,
textAlign: titleAlign(align, position, reverse),
textBaseline: 'middle',
translation: [titleX, titleY],
});
}
draw(chartArea) {
const me = this;
if (!me._isVisible()) {
return;
}
me.drawBackground();
me.drawGrid(chartArea);
me.drawBorder();
me.drawTitle();
me.drawLabels(chartArea);
}
_layers() {
const me = this;
const opts = me.options;
const tz = opts.ticks && opts.ticks.z || 0;
const gz = valueOrDefault(opts.grid && opts.grid.z, -1);
if (!me._isVisible() || me.draw !== Scale.prototype.draw) {
return [{
z: tz,
draw(chartArea) {
me.draw(chartArea);
}
}];
}
return [{
z: gz,
draw(chartArea) {
me.drawBackground();
me.drawGrid(chartArea);
me.drawTitle();
}
}, {
z: gz + 1,
draw() {
me.drawBorder();
}
}, {
z: tz,
draw(chartArea) {
me.drawLabels(chartArea);
}
}];
}
getMatchingVisibleMetas(type) {
const me = this;
const metas = me.chart.getSortedVisibleDatasetMetas();
const axisID = me.axis + 'AxisID';
const result = [];
let i, ilen;
for (i = 0, ilen = metas.length; i < ilen; ++i) {
const meta = metas[i];
if (meta[axisID] === me.id && (!type || meta.type === type)) {
result.push(meta);
}
}
return result;
}
_resolveTickFontOptions(index) {
const opts = this.options.ticks.setContext(this.getContext(index));
return toFont(opts.font);
}
_maxDigits() {
const me = this;
const fontSize = me._resolveTickFontOptions(0).lineHeight;
return (me.isHorizontal() ? me.width : me.height) / fontSize;
}
}
class TypedRegistry {
constructor(type, scope, override) {
this.type = type;
this.scope = scope;
this.override = override;
this.items = Object.create(null);
}
isForType(type) {
return Object.prototype.isPrototypeOf.call(this.type.prototype, type.prototype);
}
register(item) {
const me = this;
const proto = Object.getPrototypeOf(item);
let parentScope;
if (isIChartComponent(proto)) {
parentScope = me.register(proto);
}
const items = me.items;
const id = item.id;
const scope = me.scope + '.' + id;
if (!id) {
throw new Error('class does not have id: ' + item);
}
if (id in items) {
return scope;
}
items[id] = item;
registerDefaults(item, scope, parentScope);
if (me.override) {
defaults.override(item.id, item.overrides);
}
return scope;
}
get(id) {
return this.items[id];
}
unregister(item) {
const items = this.items;
const id = item.id;
const scope = this.scope;
if (id in items) {
delete items[id];
}
if (scope && id in defaults[scope]) {
delete defaults[scope][id];
if (this.override) {
delete overrides[id];
}
}
}
}
function registerDefaults(item, scope, parentScope) {
const itemDefaults = merge(Object.create(null), [
parentScope ? defaults.get(parentScope) : {},
defaults.get(scope),
item.defaults
]);
defaults.set(scope, itemDefaults);
if (item.defaultRoutes) {
routeDefaults(scope, item.defaultRoutes);
}
if (item.descriptors) {
defaults.describe(scope, item.descriptors);
}
}
function routeDefaults(scope, routes) {
Object.keys(routes).forEach(property => {
const propertyParts = property.split('.');
const sourceName = propertyParts.pop();
const sourceScope = [scope].concat(propertyParts).join('.');
const parts = routes[property].split('.');
const targetName = parts.pop();
const targetScope = parts.join('.');
defaults.route(sourceScope, sourceName, targetScope, targetName);
});
}
function isIChartComponent(proto) {
return 'id' in proto && 'defaults' in proto;
}
class Registry {
constructor() {
this.controllers = new TypedRegistry(DatasetController, 'datasets', true);
this.elements = new TypedRegistry(Element, 'elements');
this.plugins = new TypedRegistry(Object, 'plugins');
this.scales = new TypedRegistry(Scale, 'scales');
this._typedRegistries = [this.controllers, this.scales, this.elements];
}
add(...args) {
this._each('register', args);
}
remove(...args) {
this._each('unregister', args);
}
addControllers(...args) {
this._each('register', args, this.controllers);
}
addElements(...args) {
this._each('register', args, this.elements);
}
addPlugins(...args) {
this._each('register', args, this.plugins);
}
addScales(...args) {
this._each('register', args, this.scales);
}
getController(id) {
return this._get(id, this.controllers, 'controller');
}
getElement(id) {
return this._get(id, this.elements, 'element');
}
getPlugin(id) {
return this._get(id, this.plugins, 'plugin');
}
getScale(id) {
return this._get(id, this.scales, 'scale');
}
removeControllers(...args) {
this._each('unregister', args, this.controllers);
}
removeElements(...args) {
this._each('unregister', args, this.elements);
}
removePlugins(...args) {
this._each('unregister', args, this.plugins);
}
removeScales(...args) {
this._each('unregister', args, this.scales);
}
_each(method, args, typedRegistry) {
const me = this;
[...args].forEach(arg => {
const reg = typedRegistry || me._getRegistryForType(arg);
if (typedRegistry || reg.isForType(arg) || (reg === me.plugins && arg.id)) {
me._exec(method, reg, arg);
} else {
each(arg, item => {
const itemReg = typedRegistry || me._getRegistryForType(item);
me._exec(method, itemReg, item);
});
}
});
}
_exec(method, registry, component) {
const camelMethod = _capitalize(method);
callback(component['before' + camelMethod], [], component);
registry[method](component);
callback(component['after' + camelMethod], [], component);
}
_getRegistryForType(type) {
for (let i = 0; i < this._typedRegistries.length; i++) {
const reg = this._typedRegistries[i];
if (reg.isForType(type)) {
return reg;
}
}
return this.plugins;
}
_get(id, typedRegistry, type) {
const item = typedRegistry.get(id);
if (item === undefined) {
throw new Error('"' + id + '" is not a registered ' + type + '.');
}
return item;
}
}
var registry = new Registry();
class PluginService {
constructor() {
this._init = [];
}
notify(chart, hook, args, filter) {
const me = this;
if (hook === 'beforeInit') {
me._init = me._createDescriptors(chart, true);
me._notify(me._init, chart, 'install');
}
const descriptors = filter ? me._descriptors(chart).filter(filter) : me._descriptors(chart);
const result = me._notify(descriptors, chart, hook, args);
if (hook === 'destroy') {
me._notify(descriptors, chart, 'stop');
me._notify(me._init, chart, 'uninstall');
}
return result;
}
_notify(descriptors, chart, hook, args) {
args = args || {};
for (const descriptor of descriptors) {
const plugin = descriptor.plugin;
const method = plugin[hook];
const params = [chart, args, descriptor.options];
if (callback(method, params, plugin) === false && args.cancelable) {
return false;
}
}
return true;
}
invalidate() {
if (!isNullOrUndef(this._cache)) {
this._oldCache = this._cache;
this._cache = undefined;
}
}
_descriptors(chart) {
if (this._cache) {
return this._cache;
}
const descriptors = this._cache = this._createDescriptors(chart);
this._notifyStateChanges(chart);
return descriptors;
}
_createDescriptors(chart, all) {
const config = chart && chart.config;
const options = valueOrDefault(config.options && config.options.plugins, {});
const plugins = allPlugins(config);
return options === false && !all ? [] : createDescriptors(chart, plugins, options, all);
}
_notifyStateChanges(chart) {
const previousDescriptors = this._oldCache || [];
const descriptors = this._cache;
const diff = (a, b) => a.filter(x => !b.some(y => x.plugin.id === y.plugin.id));
this._notify(diff(previousDescriptors, descriptors), chart, 'stop');
this._notify(diff(descriptors, previousDescriptors), chart, 'start');
}
}
function allPlugins(config) {
const plugins = [];
const keys = Object.keys(registry.plugins.items);
for (let i = 0; i < keys.length; i++) {
plugins.push(registry.getPlugin(keys[i]));
}
const local = config.plugins || [];
for (let i = 0; i < local.length; i++) {
const plugin = local[i];
if (plugins.indexOf(plugin) === -1) {
plugins.push(plugin);
}
}
return plugins;
}
function getOpts(options, all) {
if (!all && options === false) {
return null;
}
if (options === true) {
return {};
}
return options;
}
function createDescriptors(chart, plugins, options, all) {
const result = [];
const context = chart.getContext();
for (let i = 0; i < plugins.length; i++) {
const plugin = plugins[i];
const id = plugin.id;
const opts = getOpts(options[id], all);
if (opts === null) {
continue;
}
result.push({
plugin,
options: pluginOpts(chart.config, plugin, opts, context)
});
}
return result;
}
function pluginOpts(config, plugin, opts, context) {
const keys = config.pluginScopeKeys(plugin);
const scopes = config.getOptionScopes(opts, keys);
return config.createResolver(scopes, context, [''], {scriptable: false, indexable: false, allKeys: true});
}
function getIndexAxis(type, options) {
const datasetDefaults = defaults.datasets[type] || {};
const datasetOptions = (options.datasets || {})[type] || {};
return datasetOptions.indexAxis || options.indexAxis || datasetDefaults.indexAxis || 'x';
}
function getAxisFromDefaultScaleID(id, indexAxis) {
let axis = id;
if (id === '_index_') {
axis = indexAxis;
} else if (id === '_value_') {
axis = indexAxis === 'x' ? 'y' : 'x';
}
return axis;
}
function getDefaultScaleIDFromAxis(axis, indexAxis) {
return axis === indexAxis ? '_index_' : '_value_';
}
function axisFromPosition(position) {
if (position === 'top' || position === 'bottom') {
return 'x';
}
if (position === 'left' || position === 'right') {
return 'y';
}
}
function determineAxis(id, scaleOptions) {
if (id === 'x' || id === 'y') {
return id;
}
return scaleOptions.axis || axisFromPosition(scaleOptions.position) || id.charAt(0).toLowerCase();
}
function mergeScaleConfig(config, options) {
const chartDefaults = overrides[config.type] || {scales: {}};
const configScales = options.scales || {};
const chartIndexAxis = getIndexAxis(config.type, options);
const firstIDs = Object.create(null);
const scales = Object.create(null);
Object.keys(configScales).forEach(id => {
const scaleConf = configScales[id];
const axis = determineAxis(id, scaleConf);
const defaultId = getDefaultScaleIDFromAxis(axis, chartIndexAxis);
const defaultScaleOptions = chartDefaults.scales || {};
firstIDs[axis] = firstIDs[axis] || id;
scales[id] = mergeIf(Object.create(null), [{axis}, scaleConf, defaultScaleOptions[axis], defaultScaleOptions[defaultId]]);
});
config.data.datasets.forEach(dataset => {
const type = dataset.type || config.type;
const indexAxis = dataset.indexAxis || getIndexAxis(type, options);
const datasetDefaults = overrides[type] || {};
const defaultScaleOptions = datasetDefaults.scales || {};
Object.keys(defaultScaleOptions).forEach(defaultID => {
const axis = getAxisFromDefaultScaleID(defaultID, indexAxis);
const id = dataset[axis + 'AxisID'] || firstIDs[axis] || axis;
scales[id] = scales[id] || Object.create(null);
mergeIf(scales[id], [{axis}, configScales[id], defaultScaleOptions[defaultID]]);
});
});
Object.keys(scales).forEach(key => {
const scale = scales[key];
mergeIf(scale, [defaults.scales[scale.type], defaults.scale]);
});
return scales;
}
function initOptions(config) {
const options = config.options || (config.options = {});
options.plugins = valueOrDefault(options.plugins, {});
options.scales = mergeScaleConfig(config, options);
}
function initData(data) {
data = data || {};
data.datasets = data.datasets || [];
data.labels = data.labels || [];
return data;
}
function initConfig(config) {
config = config || {};
config.data = initData(config.data);
initOptions(config);
return config;
}
const keyCache = new Map();
const keysCached = new Set();
function cachedKeys(cacheKey, generate) {
let keys = keyCache.get(cacheKey);
if (!keys) {
keys = generate();
keyCache.set(cacheKey, keys);
keysCached.add(keys);
}
return keys;
}
const addIfFound = (set, obj, key) => {
const opts = resolveObjectKey(obj, key);
if (opts !== undefined) {
set.add(opts);
}
};
class Config {
constructor(config) {
this._config = initConfig(config);
this._scopeCache = new Map();
this._resolverCache = new Map();
}
get platform() {
return this._config.platform;
}
get type() {
return this._config.type;
}
set type(type) {
this._config.type = type;
}
get data() {
return this._config.data;
}
set data(data) {
this._config.data = initData(data);
}
get options() {
return this._config.options;
}
set options(options) {
this._config.options = options;
}
get plugins() {
return this._config.plugins;
}
update() {
const config = this._config;
this.clearCache();
initOptions(config);
}
clearCache() {
this._scopeCache.clear();
this._resolverCache.clear();
}
datasetScopeKeys(datasetType) {
return cachedKeys(datasetType,
() => [[
`datasets.${datasetType}`,
''
]]);
}
datasetAnimationScopeKeys(datasetType, transition) {
return cachedKeys(`${datasetType}.transition.${transition}`,
() => [
[
`datasets.${datasetType}.transitions.${transition}`,
`transitions.${transition}`,
],
[
`datasets.${datasetType}`,
''
]
]);
}
datasetElementScopeKeys(datasetType, elementType) {
return cachedKeys(`${datasetType}-${elementType}`,
() => [[
`datasets.${datasetType}.elements.${elementType}`,
`datasets.${datasetType}`,
`elements.${elementType}`,
''
]]);
}
pluginScopeKeys(plugin) {
const id = plugin.id;
const type = this.type;
return cachedKeys(`${type}-plugin-${id}`,
() => [[
`plugins.${id}`,
...plugin.additionalOptionScopes || [],
]]);
}
_cachedScopes(mainScope, resetCache) {
const _scopeCache = this._scopeCache;
let cache = _scopeCache.get(mainScope);
if (!cache || resetCache) {
cache = new Map();
_scopeCache.set(mainScope, cache);
}
return cache;
}
getOptionScopes(mainScope, keyLists, resetCache) {
const {options, type} = this;
const cache = this._cachedScopes(mainScope, resetCache);
const cached = cache.get(keyLists);
if (cached) {
return cached;
}
const scopes = new Set();
keyLists.forEach(keys => {
if (mainScope) {
scopes.add(mainScope);
keys.forEach(key => addIfFound(scopes, mainScope, key));
}
keys.forEach(key => addIfFound(scopes, options, key));
keys.forEach(key => addIfFound(scopes, overrides[type] || {}, key));
keys.forEach(key => addIfFound(scopes, defaults, key));
keys.forEach(key => addIfFound(scopes, descriptors, key));
});
const array = Array.from(scopes);
if (array.length === 0) {
array.push(Object.create(null));
}
if (keysCached.has(keyLists)) {
cache.set(keyLists, array);
}
return array;
}
chartOptionScopes() {
const {options, type} = this;
return [
options,
overrides[type] || {},
defaults.datasets[type] || {},
{type},
defaults,
descriptors
];
}
resolveNamedOptions(scopes, names, context, prefixes = ['']) {
const result = {$shared: true};
const {resolver, subPrefixes} = getResolver(this._resolverCache, scopes, prefixes);
let options = resolver;
if (needContext(resolver, names)) {
result.$shared = false;
context = isFunction(context) ? context() : context;
const subResolver = this.createResolver(scopes, context, subPrefixes);
options = _attachContext(resolver, context, subResolver);
}
for (const prop of names) {
result[prop] = options[prop];
}
return result;
}
createResolver(scopes, context, prefixes = [''], descriptorDefaults) {
const {resolver} = getResolver(this._resolverCache, scopes, prefixes);
return isObject(context)
? _attachContext(resolver, context, undefined, descriptorDefaults)
: resolver;
}
}
function getResolver(resolverCache, scopes, prefixes) {
let cache = resolverCache.get(scopes);
if (!cache) {
cache = new Map();
resolverCache.set(scopes, cache);
}
const cacheKey = prefixes.join();
let cached = cache.get(cacheKey);
if (!cached) {
const resolver = _createResolver(scopes, prefixes);
cached = {
resolver,
subPrefixes: prefixes.filter(p => !p.toLowerCase().includes('hover'))
};
cache.set(cacheKey, cached);
}
return cached;
}
function needContext(proxy, names) {
const {isScriptable, isIndexable} = _descriptors(proxy);
for (const prop of names) {
if ((isScriptable(prop) && isFunction(proxy[prop]))
|| (isIndexable(prop) && isArray(proxy[prop]))) {
return true;
}
}
return false;
}
var version = "3.5.1";
const KNOWN_POSITIONS = ['top', 'bottom', 'left', 'right', 'chartArea'];
function positionIsHorizontal(position, axis) {
return position === 'top' || position === 'bottom' || (KNOWN_POSITIONS.indexOf(position) === -1 && axis === 'x');
}
function compare2Level(l1, l2) {
return function(a, b) {
return a[l1] === b[l1]
? a[l2] - b[l2]
: a[l1] - b[l1];
};
}
function onAnimationsComplete(context) {
const chart = context.chart;
const animationOptions = chart.options.animation;
chart.notifyPlugins('afterRender');
callback(animationOptions && animationOptions.onComplete, [context], chart);
}
function onAnimationProgress(context) {
const chart = context.chart;
const animationOptions = chart.options.animation;
callback(animationOptions && animationOptions.onProgress, [context], chart);
}
function getCanvas(item) {
if (_isDomSupported() && typeof item === 'string') {
item = document.getElementById(item);
} else if (item && item.length) {
item = item[0];
}
if (item && item.canvas) {
item = item.canvas;
}
return item;
}
const instances = {};
const getChart = (key) => {
const canvas = getCanvas(key);
return Object.values(instances).filter((c) => c.canvas === canvas).pop();
};
class Chart {
constructor(item, userConfig) {
const me = this;
const config = this.config = new Config(userConfig);
const initialCanvas = getCanvas(item);
const existingChart = getChart(initialCanvas);
if (existingChart) {
throw new Error(
'Canvas is already in use. Chart with ID \'' + existingChart.id + '\'' +
' must be destroyed before the canvas can be reused.'
);
}
const options = config.createResolver(config.chartOptionScopes(), me.getContext());
this.platform = new (config.platform || _detectPlatform(initialCanvas))();
const context = me.platform.acquireContext(initialCanvas, options.aspectRatio);
const canvas = context && context.canvas;
const height = canvas && canvas.height;
const width = canvas && canvas.width;
this.id = uid();
this.ctx = context;
this.canvas = canvas;
this.width = width;
this.height = height;
this._options = options;
this._aspectRatio = this.aspectRatio;
this._layers = [];
this._metasets = [];
this._stacks = undefined;
this.boxes = [];
this.currentDevicePixelRatio = undefined;
this.chartArea = undefined;
this._active = [];
this._lastEvent = undefined;
this._listeners = {};
this._responsiveListeners = undefined;
this._sortedMetasets = [];
this.scales = {};
this._plugins = new PluginService();
this.$proxies = {};
this._hiddenIndices = {};
this.attached = false;
this._animationsDisabled = undefined;
this.$context = undefined;
this._doResize = debounce(() => this.update('resize'), options.resizeDelay || 0);
instances[me.id] = me;
if (!context || !canvas) {
console.error("Failed to create chart: can't acquire context from the given item");
return;
}
animator.listen(me, 'complete', onAnimationsComplete);
animator.listen(me, 'progress', onAnimationProgress);
me._initialize();
if (me.attached) {
me.update();
}
}
get aspectRatio() {
const {options: {aspectRatio, maintainAspectRatio}, width, height, _aspectRatio} = this;
if (!isNullOrUndef(aspectRatio)) {
return aspectRatio;
}
if (maintainAspectRatio && _aspectRatio) {
return _aspectRatio;
}
return height ? width / height : null;
}
get data() {
return this.config.data;
}
set data(data) {
this.config.data = data;
}
get options() {
return this._options;
}
set options(options) {
this.config.options = options;
}
_initialize() {
const me = this;
me.notifyPlugins('beforeInit');
if (me.options.responsive) {
me.resize();
} else {
retinaScale(me, me.options.devicePixelRatio);
}
me.bindEvents();
me.notifyPlugins('afterInit');
return me;
}
clear() {
clearCanvas(this.canvas, this.ctx);
return this;
}
stop() {
animator.stop(this);
return this;
}
resize(width, height) {
if (!animator.running(this)) {
this._resize(width, height);
} else {
this._resizeBeforeDraw = {width, height};
}
}
_resize(width, height) {
const me = this;
const options = me.options;
const canvas = me.canvas;
const aspectRatio = options.maintainAspectRatio && me.aspectRatio;
const newSize = me.platform.getMaximumSize(canvas, width, height, aspectRatio);
const newRatio = options.devicePixelRatio || me.platform.getDevicePixelRatio();
me.width = newSize.width;
me.height = newSize.height;
me._aspectRatio = me.aspectRatio;
if (!retinaScale(me, newRatio, true)) {
return;
}
me.notifyPlugins('resize', {size: newSize});
callback(options.onResize, [me, newSize], me);
if (me.attached) {
if (me._doResize()) {
me.render();
}
}
}
ensureScalesHaveIDs() {
const options = this.options;
const scalesOptions = options.scales || {};
each(scalesOptions, (axisOptions, axisID) => {
axisOptions.id = axisID;
});
}
buildOrUpdateScales() {
const me = this;
const options = me.options;
const scaleOpts = options.scales;
const scales = me.scales;
const updated = Object.keys(scales).reduce((obj, id) => {
obj[id] = false;
return obj;
}, {});
let items = [];
if (scaleOpts) {
items = items.concat(
Object.keys(scaleOpts).map((id) => {
const scaleOptions = scaleOpts[id];
const axis = determineAxis(id, scaleOptions);
const isRadial = axis === 'r';
const isHorizontal = axis === 'x';
return {
options: scaleOptions,
dposition: isRadial ? 'chartArea' : isHorizontal ? 'bottom' : 'left',
dtype: isRadial ? 'radialLinear' : isHorizontal ? 'category' : 'linear'
};
})
);
}
each(items, (item) => {
const scaleOptions = item.options;
const id = scaleOptions.id;
const axis = determineAxis(id, scaleOptions);
const scaleType = valueOrDefault(scaleOptions.type, item.dtype);
if (scaleOptions.position === undefined || positionIsHorizontal(scaleOptions.position, axis) !== positionIsHorizontal(item.dposition)) {
scaleOptions.position = item.dposition;
}
updated[id] = true;
let scale = null;
if (id in scales && scales[id].type === scaleType) {
scale = scales[id];
} else {
const scaleClass = registry.getScale(scaleType);
scale = new scaleClass({
id,
type: scaleType,
ctx: me.ctx,
chart: me
});
scales[scale.id] = scale;
}
scale.init(scaleOptions, options);
});
each(updated, (hasUpdated, id) => {
if (!hasUpdated) {
delete scales[id];
}
});
each(scales, (scale) => {
layouts.configure(me, scale, scale.options);
layouts.addBox(me, scale);
});
}
_updateMetasets() {
const me = this;
const metasets = me._metasets;
const numData = me.data.datasets.length;
const numMeta = metasets.length;
metasets.sort((a, b) => a.index - b.index);
if (numMeta > numData) {
for (let i = numData; i < numMeta; ++i) {
me._destroyDatasetMeta(i);
}
metasets.splice(numData, numMeta - numData);
}
me._sortedMetasets = metasets.slice(0).sort(compare2Level('order', 'index'));
}
_removeUnreferencedMetasets() {
const me = this;
const {_metasets: metasets, data: {datasets}} = me;
if (metasets.length > datasets.length) {
delete me._stacks;
}
metasets.forEach((meta, index) => {
if (datasets.filter(x => x === meta._dataset).length === 0) {
me._destroyDatasetMeta(index);
}
});
}
buildOrUpdateControllers() {
const me = this;
const newControllers = [];
const datasets = me.data.datasets;
let i, ilen;
me._removeUnreferencedMetasets();
for (i = 0, ilen = datasets.length; i < ilen; i++) {
const dataset = datasets[i];
let meta = me.getDatasetMeta(i);
const type = dataset.type || me.config.type;
if (meta.type && meta.type !== type) {
me._destroyDatasetMeta(i);
meta = me.getDatasetMeta(i);
}
meta.type = type;
meta.indexAxis = dataset.indexAxis || getIndexAxis(type, me.options);
meta.order = dataset.order || 0;
meta.index = i;
meta.label = '' + dataset.label;
meta.visible = me.isDatasetVisible(i);
if (meta.controller) {
meta.controller.updateIndex(i);
meta.controller.linkScales();
} else {
const ControllerClass = registry.getController(type);
const {datasetElementType, dataElementType} = defaults.datasets[type];
Object.assign(ControllerClass.prototype, {
dataElementType: registry.getElement(dataElementType),
datasetElementType: datasetElementType && registry.getElement(datasetElementType)
});
meta.controller = new ControllerClass(me, i);
newControllers.push(meta.controller);
}
}
me._updateMetasets();
return newControllers;
}
_resetElements() {
const me = this;
each(me.data.datasets, (dataset, datasetIndex) => {
me.getDatasetMeta(datasetIndex).controller.reset();
}, me);
}
reset() {
this._resetElements();
this.notifyPlugins('reset');
}
update(mode) {
const me = this;
const config = me.config;
config.update();
me._options = config.createResolver(config.chartOptionScopes(), me.getContext());
each(me.scales, (scale) => {
layouts.removeBox(me, scale);
});
const animsDisabled = me._animationsDisabled = !me.options.animation;
me.ensureScalesHaveIDs();
me.buildOrUpdateScales();
const existingEvents = new Set(Object.keys(me._listeners));
const newEvents = new Set(me.options.events);
if (!setsEqual(existingEvents, newEvents) || !!this._responsiveListeners !== me.options.responsive) {
me.unbindEvents();
me.bindEvents();
}
me._plugins.invalidate();
if (me.notifyPlugins('beforeUpdate', {mode, cancelable: true}) === false) {
return;
}
const newControllers = me.buildOrUpdateControllers();
me.notifyPlugins('beforeElementsUpdate');
let minPadding = 0;
for (let i = 0, ilen = me.data.datasets.length; i < ilen; i++) {
const {controller} = me.getDatasetMeta(i);
const reset = !animsDisabled && newControllers.indexOf(controller) === -1;
controller.buildOrUpdateElements(reset);
minPadding = Math.max(+controller.getMaxOverflow(), minPadding);
}
me._minPadding = minPadding;
me._updateLayout(minPadding);
if (!animsDisabled) {
each(newControllers, (controller) => {
controller.reset();
});
}
me._updateDatasets(mode);
me.notifyPlugins('afterUpdate', {mode});
me._layers.sort(compare2Level('z', '_idx'));
if (me._lastEvent) {
me._eventHandler(me._lastEvent, true);
}
me.render();
}
_updateLayout(minPadding) {
const me = this;
if (me.notifyPlugins('beforeLayout', {cancelable: true}) === false) {
return;
}
layouts.update(me, me.width, me.height, minPadding);
const area = me.chartArea;
const noArea = area.width <= 0 || area.height <= 0;
me._layers = [];
each(me.boxes, (box) => {
if (noArea && box.position === 'chartArea') {
return;
}
if (box.configure) {
box.configure();
}
me._layers.push(...box._layers());
}, me);
me._layers.forEach((item, index) => {
item._idx = index;
});
me.notifyPlugins('afterLayout');
}
_updateDatasets(mode) {
const me = this;
const isFunction = typeof mode === 'function';
if (me.notifyPlugins('beforeDatasetsUpdate', {mode, cancelable: true}) === false) {
return;
}
for (let i = 0, ilen = me.data.datasets.length; i < ilen; ++i) {
me._updateDataset(i, isFunction ? mode({datasetIndex: i}) : mode);
}
me.notifyPlugins('afterDatasetsUpdate', {mode});
}
_updateDataset(index, mode) {
const me = this;
const meta = me.getDatasetMeta(index);
const args = {meta, index, mode, cancelable: true};
if (me.notifyPlugins('beforeDatasetUpdate', args) === false) {
return;
}
meta.controller._update(mode);
args.cancelable = false;
me.notifyPlugins('afterDatasetUpdate', args);
}
render() {
const me = this;
if (me.notifyPlugins('beforeRender', {cancelable: true}) === false) {
return;
}
if (animator.has(me)) {
if (me.attached && !animator.running(me)) {
animator.start(me);
}
} else {
me.draw();
onAnimationsComplete({chart: me});
}
}
draw() {
const me = this;
let i;
if (me._resizeBeforeDraw) {
const {width, height} = me._resizeBeforeDraw;
me._resize(width, height);
me._resizeBeforeDraw = null;
}
me.clear();
if (me.width <= 0 || me.height <= 0) {
return;
}
if (me.notifyPlugins('beforeDraw', {cancelable: true}) === false) {
return;
}
const layers = me._layers;
for (i = 0; i < layers.length && layers[i].z <= 0; ++i) {
layers[i].draw(me.chartArea);
}
me._drawDatasets();
for (; i < layers.length; ++i) {
layers[i].draw(me.chartArea);
}
me.notifyPlugins('afterDraw');
}
_getSortedDatasetMetas(filterVisible) {
const me = this;
const metasets = me._sortedMetasets;
const result = [];
let i, ilen;
for (i = 0, ilen = metasets.length; i < ilen; ++i) {
const meta = metasets[i];
if (!filterVisible || meta.visible) {
result.push(meta);
}
}
return result;
}
getSortedVisibleDatasetMetas() {
return this._getSortedDatasetMetas(true);
}
_drawDatasets() {
const me = this;
if (me.notifyPlugins('beforeDatasetsDraw', {cancelable: true}) === false) {
return;
}
const metasets = me.getSortedVisibleDatasetMetas();
for (let i = metasets.length - 1; i >= 0; --i) {
me._drawDataset(metasets[i]);
}
me.notifyPlugins('afterDatasetsDraw');
}
_drawDataset(meta) {
const me = this;
const ctx = me.ctx;
const clip = meta._clip;
const useClip = !clip.disabled;
const area = me.chartArea;
const args = {
meta,
index: meta.index,
cancelable: true
};
if (me.notifyPlugins('beforeDatasetDraw', args) === false) {
return;
}
if (useClip) {
clipArea(ctx, {
left: clip.left === false ? 0 : area.left - clip.left,
right: clip.right === false ? me.width : area.right + clip.right,
top: clip.top === false ? 0 : area.top - clip.top,
bottom: clip.bottom === false ? me.height : area.bottom + clip.bottom
});
}
meta.controller.draw();
if (useClip) {
unclipArea(ctx);
}
args.cancelable = false;
me.notifyPlugins('afterDatasetDraw', args);
}
getElementsAtEventForMode(e, mode, options, useFinalPosition) {
const method = Interaction.modes[mode];
if (typeof method === 'function') {
return method(this, e, options, useFinalPosition);
}
return [];
}
getDatasetMeta(datasetIndex) {
const me = this;
const dataset = me.data.datasets[datasetIndex];
const metasets = me._metasets;
let meta = metasets.filter(x => x && x._dataset === dataset).pop();
if (!meta) {
meta = {
type: null,
data: [],
dataset: null,
controller: null,
hidden: null,
xAxisID: null,
yAxisID: null,
order: dataset && dataset.order || 0,
index: datasetIndex,
_dataset: dataset,
_parsed: [],
_sorted: false
};
metasets.push(meta);
}
return meta;
}
getContext() {
return this.$context || (this.$context = {chart: this, type: 'chart'});
}
getVisibleDatasetCount() {
return this.getSortedVisibleDatasetMetas().length;
}
isDatasetVisible(datasetIndex) {
const dataset = this.data.datasets[datasetIndex];
if (!dataset) {
return false;
}
const meta = this.getDatasetMeta(datasetIndex);
return typeof meta.hidden === 'boolean' ? !meta.hidden : !dataset.hidden;
}
setDatasetVisibility(datasetIndex, visible) {
const meta = this.getDatasetMeta(datasetIndex);
meta.hidden = !visible;
}
toggleDataVisibility(index) {
this._hiddenIndices[index] = !this._hiddenIndices[index];
}
getDataVisibility(index) {
return !this._hiddenIndices[index];
}
_updateVisibility(datasetIndex, dataIndex, visible) {
const me = this;
const mode = visible ? 'show' : 'hide';
const meta = me.getDatasetMeta(datasetIndex);
const anims = meta.controller._resolveAnimations(undefined, mode);
if (defined(dataIndex)) {
meta.data[dataIndex].hidden = !visible;
me.update();
} else {
me.setDatasetVisibility(datasetIndex, visible);
anims.update(meta, {visible});
me.update((ctx) => ctx.datasetIndex === datasetIndex ? mode : undefined);
}
}
hide(datasetIndex, dataIndex) {
this._updateVisibility(datasetIndex, dataIndex, false);
}
show(datasetIndex, dataIndex) {
this._updateVisibility(datasetIndex, dataIndex, true);
}
_destroyDatasetMeta(datasetIndex) {
const me = this;
const meta = me._metasets && me._metasets[datasetIndex];
if (meta && meta.controller) {
meta.controller._destroy();
delete me._metasets[datasetIndex];
}
}
destroy() {
const me = this;
const {canvas, ctx} = me;
let i, ilen;
me.stop();
animator.remove(me);
for (i = 0, ilen = me.data.datasets.length; i < ilen; ++i) {
me._destroyDatasetMeta(i);
}
me.config.clearCache();
if (canvas) {
me.unbindEvents();
clearCanvas(canvas, ctx);
me.platform.releaseContext(ctx);
me.canvas = null;
me.ctx = null;
}
me.notifyPlugins('destroy');
delete instances[me.id];
}
toBase64Image(...args) {
return this.canvas.toDataURL(...args);
}
bindEvents() {
this.bindUserEvents();
if (this.options.responsive) {
this.bindResponsiveEvents();
} else {
this.attached = true;
}
}
bindUserEvents() {
const me = this;
const listeners = me._listeners;
const platform = me.platform;
const _add = (type, listener) => {
platform.addEventListener(me, type, listener);
listeners[type] = listener;
};
const listener = function(e, x, y) {
e.offsetX = x;
e.offsetY = y;
me._eventHandler(e);
};
each(me.options.events, (type) => _add(type, listener));
}
bindResponsiveEvents() {
const me = this;
if (!me._responsiveListeners) {
me._responsiveListeners = {};
}
const listeners = me._responsiveListeners;
const platform = me.platform;
const _add = (type, listener) => {
platform.addEventListener(me, type, listener);
listeners[type] = listener;
};
const _remove = (type, listener) => {
if (listeners[type]) {
platform.removeEventListener(me, type, listener);
delete listeners[type];
}
};
const listener = (width, height) => {
if (me.canvas) {
me.resize(width, height);
}
};
let detached;
const attached = () => {
_remove('attach', attached);
me.attached = true;
me.resize();
_add('resize', listener);
_add('detach', detached);
};
detached = () => {
me.attached = false;
_remove('resize', listener);
_add('attach', attached);
};
if (platform.isAttached(me.canvas)) {
attached();
} else {
detached();
}
}
unbindEvents() {
const me = this;
each(me._listeners, (listener, type) => {
me.platform.removeEventListener(me, type, listener);
});
me._listeners = {};
each(me._responsiveListeners, (listener, type) => {
me.platform.removeEventListener(me, type, listener);
});
me._responsiveListeners = undefined;
}
updateHoverStyle(items, mode, enabled) {
const prefix = enabled ? 'set' : 'remove';
let meta, item, i, ilen;
if (mode === 'dataset') {
meta = this.getDatasetMeta(items[0].datasetIndex);
meta.controller['_' + prefix + 'DatasetHoverStyle']();
}
for (i = 0, ilen = items.length; i < ilen; ++i) {
item = items[i];
const controller = item && this.getDatasetMeta(item.datasetIndex).controller;
if (controller) {
controller[prefix + 'HoverStyle'](item.element, item.datasetIndex, item.index);
}
}
}
getActiveElements() {
return this._active || [];
}
setActiveElements(activeElements) {
const me = this;
const lastActive = me._active || [];
const active = activeElements.map(({datasetIndex, index}) => {
const meta = me.getDatasetMeta(datasetIndex);
if (!meta) {
throw new Error('No dataset found at index ' + datasetIndex);
}
return {
datasetIndex,
element: meta.data[index],
index,
};
});
const changed = !_elementsEqual(active, lastActive);
if (changed) {
me._active = active;
me._updateHoverStyles(active, lastActive);
}
}
notifyPlugins(hook, args, filter) {
return this._plugins.notify(this, hook, args, filter);
}
_updateHoverStyles(active, lastActive, replay) {
const me = this;
const hoverOptions = me.options.hover;
const diff = (a, b) => a.filter(x => !b.some(y => x.datasetIndex === y.datasetIndex && x.index === y.index));
const deactivated = diff(lastActive, active);
const activated = replay ? active : diff(active, lastActive);
if (deactivated.length) {
me.updateHoverStyle(deactivated, hoverOptions.mode, false);
}
if (activated.length && hoverOptions.mode) {
me.updateHoverStyle(activated, hoverOptions.mode, true);
}
}
_eventHandler(e, replay) {
const me = this;
const args = {event: e, replay, cancelable: true};
const eventFilter = (plugin) => (plugin.options.events || this.options.events).includes(e.type);
if (me.notifyPlugins('beforeEvent', args, eventFilter) === false) {
return;
}
const changed = me._handleEvent(e, replay);
args.cancelable = false;
me.notifyPlugins('afterEvent', args, eventFilter);
if (changed || args.changed) {
me.render();
}
return me;
}
_handleEvent(e, replay) {
const me = this;
const {_active: lastActive = [], options} = me;
const hoverOptions = options.hover;
const useFinalPosition = replay;
let active = [];
let changed = false;
let lastEvent = null;
if (e.type !== 'mouseout') {
active = me.getElementsAtEventForMode(e, hoverOptions.mode, hoverOptions, useFinalPosition);
lastEvent = e.type === 'click' ? me._lastEvent : e;
}
me._lastEvent = null;
if (_isPointInArea(e, me.chartArea, me._minPadding)) {
callback(options.onHover, [e, active, me], me);
if (e.type === 'mouseup' || e.type === 'click' || e.type === 'contextmenu') {
callback(options.onClick, [e, active, me], me);
}
}
changed = !_elementsEqual(active, lastActive);
if (changed || replay) {
me._active = active;
me._updateHoverStyles(active, lastActive, replay);
}
me._lastEvent = lastEvent;
return changed;
}
}
const invalidatePlugins = () => each(Chart.instances, (chart) => chart._plugins.invalidate());
const enumerable = true;
Object.defineProperties(Chart, {
defaults: {
enumerable,
value: defaults
},
instances: {
enumerable,
value: instances
},
overrides: {
enumerable,
value: overrides
},
registry: {
enumerable,
value: registry
},
version: {
enumerable,
value: version
},
getChart: {
enumerable,
value: getChart
},
register: {
enumerable,
value: (...items) => {
registry.add(...items);
invalidatePlugins();
}
},
unregister: {
enumerable,
value: (...items) => {
registry.remove(...items);
invalidatePlugins();
}
}
});
function abstract() {
throw new Error('This method is not implemented: Check that a complete date adapter is provided.');
}
class DateAdapter {
constructor(options) {
this.options = options || {};
}
formats() {
return abstract();
}
parse(value, format) {
return abstract();
}
format(timestamp, format) {
return abstract();
}
add(timestamp, amount, unit) {
return abstract();
}
diff(a, b, unit) {
return abstract();
}
startOf(timestamp, unit, weekday) {
return abstract();
}
endOf(timestamp, unit) {
return abstract();
}
}
DateAdapter.override = function(members) {
Object.assign(DateAdapter.prototype, members);
};
var _adapters = {
_date: DateAdapter
};
function getAllScaleValues(scale) {
if (!scale._cache.$bar) {
const metas = scale.getMatchingVisibleMetas('bar');
let values = [];
for (let i = 0, ilen = metas.length; i < ilen; i++) {
values = values.concat(metas[i].controller.getAllParsedValues(scale));
}
scale._cache.$bar = _arrayUnique(values.sort((a, b) => a - b));
}
return scale._cache.$bar;
}
function computeMinSampleSize(scale) {
const values = getAllScaleValues(scale);
let min = scale._length;
let i, ilen, curr, prev;
const updateMinAndPrev = () => {
if (curr === 32767 || curr === -32768) {
return;
}
if (defined(prev)) {
min = Math.min(min, Math.abs(curr - prev) || min);
}
prev = curr;
};
for (i = 0, ilen = values.length; i < ilen; ++i) {
curr = scale.getPixelForValue(values[i]);
updateMinAndPrev();
}
prev = undefined;
for (i = 0, ilen = scale.ticks.length; i < ilen; ++i) {
curr = scale.getPixelForTick(i);
updateMinAndPrev();
}
return min;
}
function computeFitCategoryTraits(index, ruler, options, stackCount) {
const thickness = options.barThickness;
let size, ratio;
if (isNullOrUndef(thickness)) {
size = ruler.min * options.categoryPercentage;
ratio = options.barPercentage;
} else {
size = thickness * stackCount;
ratio = 1;
}
return {
chunk: size / stackCount,
ratio,
start: ruler.pixels[index] - (size / 2)
};
}
function computeFlexCategoryTraits(index, ruler, options, stackCount) {
const pixels = ruler.pixels;
const curr = pixels[index];
let prev = index > 0 ? pixels[index - 1] : null;
let next = index < pixels.length - 1 ? pixels[index + 1] : null;
const percent = options.categoryPercentage;
if (prev === null) {
prev = curr - (next === null ? ruler.end - ruler.start : next - curr);
}
if (next === null) {
next = curr + curr - prev;
}
const start = curr - (curr - Math.min(prev, next)) / 2 * percent;
const size = Math.abs(next - prev) / 2 * percent;
return {
chunk: size / stackCount,
ratio: options.barPercentage,
start
};
}
function parseFloatBar(entry, item, vScale, i) {
const startValue = vScale.parse(entry[0], i);
const endValue = vScale.parse(entry[1], i);
const min = Math.min(startValue, endValue);
const max = Math.max(startValue, endValue);
let barStart = min;
let barEnd = max;
if (Math.abs(min) > Math.abs(max)) {
barStart = max;
barEnd = min;
}
item[vScale.axis] = barEnd;
item._custom = {
barStart,
barEnd,
start: startValue,
end: endValue,
min,
max
};
}
function parseValue(entry, item, vScale, i) {
if (isArray(entry)) {
parseFloatBar(entry, item, vScale, i);
} else {
item[vScale.axis] = vScale.parse(entry, i);
}
return item;
}
function parseArrayOrPrimitive(meta, data, start, count) {
const iScale = meta.iScale;
const vScale = meta.vScale;
const labels = iScale.getLabels();
const singleScale = iScale === vScale;
const parsed = [];
let i, ilen, item, entry;
for (i = start, ilen = start + count; i < ilen; ++i) {
entry = data[i];
item = {};
item[iScale.axis] = singleScale || iScale.parse(labels[i], i);
parsed.push(parseValue(entry, item, vScale, i));
}
return parsed;
}
function isFloatBar(custom) {
return custom && custom.barStart !== undefined && custom.barEnd !== undefined;
}
function barSign(size, vScale, actualBase) {
if (size !== 0) {
return sign(size);
}
return (vScale.isHorizontal() ? 1 : -1) * (vScale.min >= actualBase ? 1 : -1);
}
function borderProps(properties) {
let reverse, start, end, top, bottom;
if (properties.horizontal) {
reverse = properties.base > properties.x;
start = 'left';
end = 'right';
} else {
reverse = properties.base < properties.y;
start = 'bottom';
end = 'top';
}
if (reverse) {
top = 'end';
bottom = 'start';
} else {
top = 'start';
bottom = 'end';
}
return {start, end, reverse, top, bottom};
}
function setBorderSkipped(properties, options, stack, index) {
let edge = options.borderSkipped;
const res = {};
if (!edge) {
properties.borderSkipped = res;
return;
}
const {start, end, reverse, top, bottom} = borderProps(properties);
if (edge === 'middle' && stack) {
properties.enableBorderRadius = true;
if ((stack._top || 0) === index) {
edge = top;
} else if ((stack._bottom || 0) === index) {
edge = bottom;
} else {
res[parseEdge(bottom, start, end, reverse)] = true;
edge = top;
}
}
res[parseEdge(edge, start, end, reverse)] = true;
properties.borderSkipped = res;
}
function parseEdge(edge, a, b, reverse) {
if (reverse) {
edge = swap(edge, a, b);
edge = startEnd(edge, b, a);
} else {
edge = startEnd(edge, a, b);
}
return edge;
}
function swap(orig, v1, v2) {
return orig === v1 ? v2 : orig === v2 ? v1 : orig;
}
function startEnd(v, start, end) {
return v === 'start' ? start : v === 'end' ? end : v;
}
class BarController extends DatasetController {
parsePrimitiveData(meta, data, start, count) {
return parseArrayOrPrimitive(meta, data, start, count);
}
parseArrayData(meta, data, start, count) {
return parseArrayOrPrimitive(meta, data, start, count);
}
parseObjectData(meta, data, start, count) {
const {iScale, vScale} = meta;
const {xAxisKey = 'x', yAxisKey = 'y'} = this._parsing;
const iAxisKey = iScale.axis === 'x' ? xAxisKey : yAxisKey;
const vAxisKey = vScale.axis === 'x' ? xAxisKey : yAxisKey;
const parsed = [];
let i, ilen, item, obj;
for (i = start, ilen = start + count; i < ilen; ++i) {
obj = data[i];
item = {};
item[iScale.axis] = iScale.parse(resolveObjectKey(obj, iAxisKey), i);
parsed.push(parseValue(resolveObjectKey(obj, vAxisKey), item, vScale, i));
}
return parsed;
}
updateRangeFromParsed(range, scale, parsed, stack) {
super.updateRangeFromParsed(range, scale, parsed, stack);
const custom = parsed._custom;
if (custom && scale === this._cachedMeta.vScale) {
range.min = Math.min(range.min, custom.min);
range.max = Math.max(range.max, custom.max);
}
}
getMaxOverflow() {
return 0;
}
getLabelAndValue(index) {
const me = this;
const meta = me._cachedMeta;
const {iScale, vScale} = meta;
const parsed = me.getParsed(index);
const custom = parsed._custom;
const value = isFloatBar(custom)
? '[' + custom.start + ', ' + custom.end + ']'
: '' + vScale.getLabelForValue(parsed[vScale.axis]);
return {
label: '' + iScale.getLabelForValue(parsed[iScale.axis]),
value
};
}
initialize() {
const me = this;
me.enableOptionSharing = true;
super.initialize();
const meta = me._cachedMeta;
meta.stack = me.getDataset().stack;
}
update(mode) {
const me = this;
const meta = me._cachedMeta;
me.updateElements(meta.data, 0, meta.data.length, mode);
}
updateElements(bars, start, count, mode) {
const me = this;
const reset = mode === 'reset';
const {index, _cachedMeta: {vScale}} = me;
const base = vScale.getBasePixel();
const horizontal = vScale.isHorizontal();
const ruler = me._getRuler();
const firstOpts = me.resolveDataElementOptions(start, mode);
const sharedOptions = me.getSharedOptions(firstOpts);
const includeOptions = me.includeOptions(mode, sharedOptions);
me.updateSharedOptions(sharedOptions, mode, firstOpts);
for (let i = start; i < start + count; i++) {
const parsed = me.getParsed(i);
const vpixels = reset || isNullOrUndef(parsed[vScale.axis]) ? {base, head: base} : me._calculateBarValuePixels(i);
const ipixels = me._calculateBarIndexPixels(i, ruler);
const stack = (parsed._stacks || {})[vScale.axis];
const properties = {
horizontal,
base: vpixels.base,
enableBorderRadius: !stack || isFloatBar(parsed._custom) || (index === stack._top || index === stack._bottom),
x: horizontal ? vpixels.head : ipixels.center,
y: horizontal ? ipixels.center : vpixels.head,
height: horizontal ? ipixels.size : Math.abs(vpixels.size),
width: horizontal ? Math.abs(vpixels.size) : ipixels.size
};
if (includeOptions) {
properties.options = sharedOptions || me.resolveDataElementOptions(i, bars[i].active ? 'active' : mode);
}
setBorderSkipped(properties, properties.options || bars[i].options, stack, index);
me.updateElement(bars[i], i, properties, mode);
}
}
_getStacks(last, dataIndex) {
const me = this;
const meta = me._cachedMeta;
const iScale = meta.iScale;
const metasets = iScale.getMatchingVisibleMetas(me._type);
const stacked = iScale.options.stacked;
const ilen = metasets.length;
const stacks = [];
let i, item;
for (i = 0; i < ilen; ++i) {
item = metasets[i];
if (!item.controller.options.grouped) {
continue;
}
if (typeof dataIndex !== 'undefined') {
const val = item.controller.getParsed(dataIndex)[
item.controller._cachedMeta.vScale.axis
];
if (isNullOrUndef(val) || isNaN(val)) {
continue;
}
}
if (stacked === false || stacks.indexOf(item.stack) === -1 ||
(stacked === undefined && item.stack === undefined)) {
stacks.push(item.stack);
}
if (item.index === last) {
break;
}
}
if (!stacks.length) {
stacks.push(undefined);
}
return stacks;
}
_getStackCount(index) {
return this._getStacks(undefined, index).length;
}
_getStackIndex(datasetIndex, name, dataIndex) {
const stacks = this._getStacks(datasetIndex, dataIndex);
const index = (name !== undefined)
? stacks.indexOf(name)
: -1;
return (index === -1)
? stacks.length - 1
: index;
}
_getRuler() {
const me = this;
const opts = me.options;
const meta = me._cachedMeta;
const iScale = meta.iScale;
const pixels = [];
let i, ilen;
for (i = 0, ilen = meta.data.length; i < ilen; ++i) {
pixels.push(iScale.getPixelForValue(me.getParsed(i)[iScale.axis], i));
}
const barThickness = opts.barThickness;
const min = barThickness || computeMinSampleSize(iScale);
return {
min,
pixels,
start: iScale._startPixel,
end: iScale._endPixel,
stackCount: me._getStackCount(),
scale: iScale,
grouped: opts.grouped,
ratio: barThickness ? 1 : opts.categoryPercentage * opts.barPercentage
};
}
_calculateBarValuePixels(index) {
const me = this;
const {_cachedMeta: {vScale, _stacked}, options: {base: baseValue, minBarLength}} = me;
const actualBase = baseValue || 0;
const parsed = me.getParsed(index);
const custom = parsed._custom;
const floating = isFloatBar(custom);
let value = parsed[vScale.axis];
let start = 0;
let length = _stacked ? me.applyStack(vScale, parsed, _stacked) : value;
let head, size;
if (length !== value) {
start = length - value;
length = value;
}
if (floating) {
value = custom.barStart;
length = custom.barEnd - custom.barStart;
if (value !== 0 && sign(value) !== sign(custom.barEnd)) {
start = 0;
}
start += value;
}
const startValue = !isNullOrUndef(baseValue) && !floating ? baseValue : start;
let base = vScale.getPixelForValue(startValue);
if (me.chart.getDataVisibility(index)) {
head = vScale.getPixelForValue(start + length);
} else {
head = base;
}
size = head - base;
if (Math.abs(size) < minBarLength) {
size = barSign(size, vScale, actualBase) * minBarLength;
if (value === actualBase) {
base -= size / 2;
}
head = base + size;
}
if (base === vScale.getPixelForValue(actualBase)) {
const halfGrid = sign(size) * vScale.getLineWidthForValue(actualBase) / 2;
base += halfGrid;
size -= halfGrid;
}
return {
size,
base,
head,
center: head + size / 2
};
}
_calculateBarIndexPixels(index, ruler) {
const me = this;
const scale = ruler.scale;
const options = me.options;
const skipNull = options.skipNull;
const maxBarThickness = valueOrDefault(options.maxBarThickness, Infinity);
let center, size;
if (ruler.grouped) {
const stackCount = skipNull ? me._getStackCount(index) : ruler.stackCount;
const range = options.barThickness === 'flex'
? computeFlexCategoryTraits(index, ruler, options, stackCount)
: computeFitCategoryTraits(index, ruler, options, stackCount);
const stackIndex = me._getStackIndex(me.index, me._cachedMeta.stack, skipNull ? index : undefined);
center = range.start + (range.chunk * stackIndex) + (range.chunk / 2);
size = Math.min(maxBarThickness, range.chunk * range.ratio);
} else {
center = scale.getPixelForValue(me.getParsed(index)[scale.axis], index);
size = Math.min(maxBarThickness, ruler.min * ruler.ratio);
}
return {
base: center - size / 2,
head: center + size / 2,
center,
size
};
}
draw() {
const me = this;
const meta = me._cachedMeta;
const vScale = meta.vScale;
const rects = meta.data;
const ilen = rects.length;
let i = 0;
for (; i < ilen; ++i) {
if (me.getParsed(i)[vScale.axis] !== null) {
rects[i].draw(me._ctx);
}
}
}
}
BarController.id = 'bar';
BarController.defaults = {
datasetElementType: false,
dataElementType: 'bar',
categoryPercentage: 0.8,
barPercentage: 0.9,
grouped: true,
animations: {
numbers: {
type: 'number',
properties: ['x', 'y', 'base', 'width', 'height']
}
}
};
BarController.overrides = {
scales: {
_index_: {
type: 'category',
offset: true,
grid: {
offset: true
}
},
_value_: {
type: 'linear',
beginAtZero: true,
}
}
};
class BubbleController extends DatasetController {
initialize() {
this.enableOptionSharing = true;
super.initialize();
}
parseObjectData(meta, data, start, count) {
const {xScale, yScale} = meta;
const {xAxisKey = 'x', yAxisKey = 'y'} = this._parsing;
const parsed = [];
let i, ilen, item;
for (i = start, ilen = start + count; i < ilen; ++i) {
item = data[i];
parsed.push({
x: xScale.parse(resolveObjectKey(item, xAxisKey), i),
y: yScale.parse(resolveObjectKey(item, yAxisKey), i),
_custom: item && item.r && +item.r
});
}
return parsed;
}
getMaxOverflow() {
const {data, _parsed} = this._cachedMeta;
let max = 0;
for (let i = data.length - 1; i >= 0; --i) {
max = Math.max(max, data[i].size() / 2, _parsed[i]._custom);
}
return max > 0 && max;
}
getLabelAndValue(index) {
const me = this;
const meta = me._cachedMeta;
const {xScale, yScale} = meta;
const parsed = me.getParsed(index);
const x = xScale.getLabelForValue(parsed.x);
const y = yScale.getLabelForValue(parsed.y);
const r = parsed._custom;
return {
label: meta.label,
value: '(' + x + ', ' + y + (r ? ', ' + r : '') + ')'
};
}
update(mode) {
const me = this;
const points = me._cachedMeta.data;
me.updateElements(points, 0, points.length, mode);
}
updateElements(points, start, count, mode) {
const me = this;
const reset = mode === 'reset';
const {iScale, vScale} = me._cachedMeta;
const firstOpts = me.resolveDataElementOptions(start, mode);
const sharedOptions = me.getSharedOptions(firstOpts);
const includeOptions = me.includeOptions(mode, sharedOptions);
const iAxis = iScale.axis;
const vAxis = vScale.axis;
for (let i = start; i < start + count; i++) {
const point = points[i];
const parsed = !reset && me.getParsed(i);
const properties = {};
const iPixel = properties[iAxis] = reset ? iScale.getPixelForDecimal(0.5) : iScale.getPixelForValue(parsed[iAxis]);
const vPixel = properties[vAxis] = reset ? vScale.getBasePixel() : vScale.getPixelForValue(parsed[vAxis]);
properties.skip = isNaN(iPixel) || isNaN(vPixel);
if (includeOptions) {
properties.options = me.resolveDataElementOptions(i, point.active ? 'active' : mode);
if (reset) {
properties.options.radius = 0;
}
}
me.updateElement(point, i, properties, mode);
}
me.updateSharedOptions(sharedOptions, mode, firstOpts);
}
resolveDataElementOptions(index, mode) {
const parsed = this.getParsed(index);
let values = super.resolveDataElementOptions(index, mode);
if (values.$shared) {
values = Object.assign({}, values, {$shared: false});
}
const radius = values.radius;
if (mode !== 'active') {
values.radius = 0;
}
values.radius += valueOrDefault(parsed && parsed._custom, radius);
return values;
}
}
BubbleController.id = 'bubble';
BubbleController.defaults = {
datasetElementType: false,
dataElementType: 'point',
animations: {
numbers: {
type: 'number',
properties: ['x', 'y', 'borderWidth', 'radius']
}
}
};
BubbleController.overrides = {
scales: {
x: {
type: 'linear'
},
y: {
type: 'linear'
}
},
plugins: {
tooltip: {
callbacks: {
title() {
return '';
}
}
}
}
};
function getRatioAndOffset(rotation, circumference, cutout) {
let ratioX = 1;
let ratioY = 1;
let offsetX = 0;
let offsetY = 0;
if (circumference < TAU) {
const startAngle = rotation;
const endAngle = startAngle + circumference;
const startX = Math.cos(startAngle);
const startY = Math.sin(startAngle);
const endX = Math.cos(endAngle);
const endY = Math.sin(endAngle);
const calcMax = (angle, a, b) => _angleBetween(angle, startAngle, endAngle, true) ? 1 : Math.max(a, a * cutout, b, b * cutout);
const calcMin = (angle, a, b) => _angleBetween(angle, startAngle, endAngle, true) ? -1 : Math.min(a, a * cutout, b, b * cutout);
const maxX = calcMax(0, startX, endX);
const maxY = calcMax(HALF_PI, startY, endY);
const minX = calcMin(PI, startX, endX);
const minY = calcMin(PI + HALF_PI, startY, endY);
ratioX = (maxX - minX) / 2;
ratioY = (maxY - minY) / 2;
offsetX = -(maxX + minX) / 2;
offsetY = -(maxY + minY) / 2;
}
return {ratioX, ratioY, offsetX, offsetY};
}
class DoughnutController extends DatasetController {
constructor(chart, datasetIndex) {
super(chart, datasetIndex);
this.enableOptionSharing = true;
this.innerRadius = undefined;
this.outerRadius = undefined;
this.offsetX = undefined;
this.offsetY = undefined;
}
linkScales() {}
parse(start, count) {
const data = this.getDataset().data;
const meta = this._cachedMeta;
let i, ilen;
for (i = start, ilen = start + count; i < ilen; ++i) {
meta._parsed[i] = +data[i];
}
}
_getRotation() {
return toRadians(this.options.rotation - 90);
}
_getCircumference() {
return toRadians(this.options.circumference);
}
_getRotationExtents() {
let min = TAU;
let max = -TAU;
const me = this;
for (let i = 0; i < me.chart.data.datasets.length; ++i) {
if (me.chart.isDatasetVisible(i)) {
const controller = me.chart.getDatasetMeta(i).controller;
const rotation = controller._getRotation();
const circumference = controller._getCircumference();
min = Math.min(min, rotation);
max = Math.max(max, rotation + circumference);
}
}
return {
rotation: min,
circumference: max - min,
};
}
update(mode) {
const me = this;
const chart = me.chart;
const {chartArea} = chart;
const meta = me._cachedMeta;
const arcs = meta.data;
const spacing = me.getMaxBorderWidth() + me.getMaxOffset(arcs) + me.options.spacing;
const maxSize = Math.max((Math.min(chartArea.width, chartArea.height) - spacing) / 2, 0);
const cutout = Math.min(toPercentage(me.options.cutout, maxSize), 1);
const chartWeight = me._getRingWeight(me.index);
const {circumference, rotation} = me._getRotationExtents();
const {ratioX, ratioY, offsetX, offsetY} = getRatioAndOffset(rotation, circumference, cutout);
const maxWidth = (chartArea.width - spacing) / ratioX;
const maxHeight = (chartArea.height - spacing) / ratioY;
const maxRadius = Math.max(Math.min(maxWidth, maxHeight) / 2, 0);
const outerRadius = toDimension(me.options.radius, maxRadius);
const innerRadius = Math.max(outerRadius * cutout, 0);
const radiusLength = (outerRadius - innerRadius) / me._getVisibleDatasetWeightTotal();
me.offsetX = offsetX * outerRadius;
me.offsetY = offsetY * outerRadius;
meta.total = me.calculateTotal();
me.outerRadius = outerRadius - radiusLength * me._getRingWeightOffset(me.index);
me.innerRadius = Math.max(me.outerRadius - radiusLength * chartWeight, 0);
me.updateElements(arcs, 0, arcs.length, mode);
}
_circumference(i, reset) {
const me = this;
const opts = me.options;
const meta = me._cachedMeta;
const circumference = me._getCircumference();
if ((reset && opts.animation.animateRotate) || !this.chart.getDataVisibility(i) || meta._parsed[i] === null || meta.data[i].hidden) {
return 0;
}
return me.calculateCircumference(meta._parsed[i] * circumference / TAU);
}
updateElements(arcs, start, count, mode) {
const me = this;
const reset = mode === 'reset';
const chart = me.chart;
const chartArea = chart.chartArea;
const opts = chart.options;
const animationOpts = opts.animation;
const centerX = (chartArea.left + chartArea.right) / 2;
const centerY = (chartArea.top + chartArea.bottom) / 2;
const animateScale = reset && animationOpts.animateScale;
const innerRadius = animateScale ? 0 : me.innerRadius;
const outerRadius = animateScale ? 0 : me.outerRadius;
const firstOpts = me.resolveDataElementOptions(start, mode);
const sharedOptions = me.getSharedOptions(firstOpts);
const includeOptions = me.includeOptions(mode, sharedOptions);
let startAngle = me._getRotation();
let i;
for (i = 0; i < start; ++i) {
startAngle += me._circumference(i, reset);
}
for (i = start; i < start + count; ++i) {
const circumference = me._circumference(i, reset);
const arc = arcs[i];
const properties = {
x: centerX + me.offsetX,
y: centerY + me.offsetY,
startAngle,
endAngle: startAngle + circumference,
circumference,
outerRadius,
innerRadius
};
if (includeOptions) {
properties.options = sharedOptions || me.resolveDataElementOptions(i, arc.active ? 'active' : mode);
}
startAngle += circumference;
me.updateElement(arc, i, properties, mode);
}
me.updateSharedOptions(sharedOptions, mode, firstOpts);
}
calculateTotal() {
const meta = this._cachedMeta;
const metaData = meta.data;
let total = 0;
let i;
for (i = 0; i < metaData.length; i++) {
const value = meta._parsed[i];
if (value !== null && !isNaN(value) && this.chart.getDataVisibility(i) && !metaData[i].hidden) {
total += Math.abs(value);
}
}
return total;
}
calculateCircumference(value) {
const total = this._cachedMeta.total;
if (total > 0 && !isNaN(value)) {
return TAU * (Math.abs(value) / total);
}
return 0;
}
getLabelAndValue(index) {
const me = this;
const meta = me._cachedMeta;
const chart = me.chart;
const labels = chart.data.labels || [];
const value = formatNumber(meta._parsed[index], chart.options.locale);
return {
label: labels[index] || '',
value,
};
}
getMaxBorderWidth(arcs) {
const me = this;
let max = 0;
const chart = me.chart;
let i, ilen, meta, controller, options;
if (!arcs) {
for (i = 0, ilen = chart.data.datasets.length; i < ilen; ++i) {
if (chart.isDatasetVisible(i)) {
meta = chart.getDatasetMeta(i);
arcs = meta.data;
controller = meta.controller;
if (controller !== me) {
controller.configure();
}
break;
}
}
}
if (!arcs) {
return 0;
}
for (i = 0, ilen = arcs.length; i < ilen; ++i) {
options = controller.resolveDataElementOptions(i);
if (options.borderAlign !== 'inner') {
max = Math.max(max, options.borderWidth || 0, options.hoverBorderWidth || 0);
}
}
return max;
}
getMaxOffset(arcs) {
let max = 0;
for (let i = 0, ilen = arcs.length; i < ilen; ++i) {
const options = this.resolveDataElementOptions(i);
max = Math.max(max, options.offset || 0, options.hoverOffset || 0);
}
return max;
}
_getRingWeightOffset(datasetIndex) {
let ringWeightOffset = 0;
for (let i = 0; i < datasetIndex; ++i) {
if (this.chart.isDatasetVisible(i)) {
ringWeightOffset += this._getRingWeight(i);
}
}
return ringWeightOffset;
}
_getRingWeight(datasetIndex) {
return Math.max(valueOrDefault(this.chart.data.datasets[datasetIndex].weight, 1), 0);
}
_getVisibleDatasetWeightTotal() {
return this._getRingWeightOffset(this.chart.data.datasets.length) || 1;
}
}
DoughnutController.id = 'doughnut';
DoughnutController.defaults = {
datasetElementType: false,
dataElementType: 'arc',
animation: {
animateRotate: true,
animateScale: false
},
animations: {
numbers: {
type: 'number',
properties: ['circumference', 'endAngle', 'innerRadius', 'outerRadius', 'startAngle', 'x', 'y', 'offset', 'borderWidth', 'spacing']
},
},
cutout: '50%',
rotation: 0,
circumference: 360,
radius: '100%',
spacing: 0,
indexAxis: 'r',
};
DoughnutController.descriptors = {
_scriptable: (name) => name !== 'spacing',
_indexable: (name) => name !== 'spacing',
};
DoughnutController.overrides = {
aspectRatio: 1,
plugins: {
legend: {
labels: {
generateLabels(chart) {
const data = chart.data;
if (data.labels.length && data.datasets.length) {
const {labels: {pointStyle}} = chart.legend.options;
return data.labels.map((label, i) => {
const meta = chart.getDatasetMeta(0);
const style = meta.controller.getStyle(i);
return {
text: label,
fillStyle: style.backgroundColor,
strokeStyle: style.borderColor,
lineWidth: style.borderWidth,
pointStyle: pointStyle,
hidden: !chart.getDataVisibility(i),
index: i
};
});
}
return [];
}
},
onClick(e, legendItem, legend) {
legend.chart.toggleDataVisibility(legendItem.index);
legend.chart.update();
}
},
tooltip: {
callbacks: {
title() {
return '';
},
label(tooltipItem) {
let dataLabel = tooltipItem.label;
const value = ': ' + tooltipItem.formattedValue;
if (isArray(dataLabel)) {
dataLabel = dataLabel.slice();
dataLabel[0] += value;
} else {
dataLabel += value;
}
return dataLabel;
}
}
}
}
};
class LineController extends DatasetController {
initialize() {
this.enableOptionSharing = true;
super.initialize();
}
update(mode) {
const me = this;
const meta = me._cachedMeta;
const {dataset: line, data: points = [], _dataset} = meta;
const animationsDisabled = me.chart._animationsDisabled;
let {start, count} = getStartAndCountOfVisiblePoints(meta, points, animationsDisabled);
me._drawStart = start;
me._drawCount = count;
if (scaleRangesChanged(meta)) {
start = 0;
count = points.length;
}
line._datasetIndex = me.index;
line._decimated = !!_dataset._decimated;
line.points = points;
const options = me.resolveDatasetElementOptions(mode);
if (!me.options.showLine) {
options.borderWidth = 0;
}
options.segment = me.options.segment;
me.updateElement(line, undefined, {
animated: !animationsDisabled,
options
}, mode);
me.updateElements(points, start, count, mode);
}
updateElements(points, start, count, mode) {
const me = this;
const reset = mode === 'reset';
const {iScale, vScale, _stacked} = me._cachedMeta;
const firstOpts = me.resolveDataElementOptions(start, mode);
const sharedOptions = me.getSharedOptions(firstOpts);
const includeOptions = me.includeOptions(mode, sharedOptions);
const iAxis = iScale.axis;
const vAxis = vScale.axis;
const spanGaps = me.options.spanGaps;
const maxGapLength = isNumber(spanGaps) ? spanGaps : Number.POSITIVE_INFINITY;
const directUpdate = me.chart._animationsDisabled || reset || mode === 'none';
let prevParsed = start > 0 && me.getParsed(start - 1);
for (let i = start; i < start + count; ++i) {
const point = points[i];
const parsed = me.getParsed(i);
const properties = directUpdate ? point : {};
const nullData = isNullOrUndef(parsed[vAxis]);
const iPixel = properties[iAxis] = iScale.getPixelForValue(parsed[iAxis], i);
const vPixel = properties[vAxis] = reset || nullData ? vScale.getBasePixel() : vScale.getPixelForValue(_stacked ? me.applyStack(vScale, parsed, _stacked) : parsed[vAxis], i);
properties.skip = isNaN(iPixel) || isNaN(vPixel) || nullData;
properties.stop = i > 0 && (parsed[iAxis] - prevParsed[iAxis]) > maxGapLength;
properties.parsed = parsed;
if (includeOptions) {
properties.options = sharedOptions || me.resolveDataElementOptions(i, point.active ? 'active' : mode);
}
if (!directUpdate) {
me.updateElement(point, i, properties, mode);
}
prevParsed = parsed;
}
me.updateSharedOptions(sharedOptions, mode, firstOpts);
}
getMaxOverflow() {
const me = this;
const meta = me._cachedMeta;
const dataset = meta.dataset;
const border = dataset.options && dataset.options.borderWidth || 0;
const data = meta.data || [];
if (!data.length) {
return border;
}
const firstPoint = data[0].size(me.resolveDataElementOptions(0));
const lastPoint = data[data.length - 1].size(me.resolveDataElementOptions(data.length - 1));
return Math.max(border, firstPoint, lastPoint) / 2;
}
draw() {
const meta = this._cachedMeta;
meta.dataset.updateControlPoints(this.chart.chartArea, meta.iScale.axis);
super.draw();
}
}
LineController.id = 'line';
LineController.defaults = {
datasetElementType: 'line',
dataElementType: 'point',
showLine: true,
spanGaps: false,
};
LineController.overrides = {
scales: {
_index_: {
type: 'category',
},
_value_: {
type: 'linear',
},
}
};
function getStartAndCountOfVisiblePoints(meta, points, animationsDisabled) {
const pointCount = points.length;
let start = 0;
let count = pointCount;
if (meta._sorted) {
const {iScale, _parsed} = meta;
const axis = iScale.axis;
const {min, max, minDefined, maxDefined} = iScale.getUserBounds();
if (minDefined) {
start = _limitValue(Math.min(
_lookupByKey(_parsed, iScale.axis, min).lo,
animationsDisabled ? pointCount : _lookupByKey(points, axis, iScale.getPixelForValue(min)).lo),
0, pointCount - 1);
}
if (maxDefined) {
count = _limitValue(Math.max(
_lookupByKey(_parsed, iScale.axis, max).hi + 1,
animationsDisabled ? 0 : _lookupByKey(points, axis, iScale.getPixelForValue(max)).hi + 1),
start, pointCount) - start;
} else {
count = pointCount - start;
}
}
return {start, count};
}
function scaleRangesChanged(meta) {
const {xScale, yScale, _scaleRanges} = meta;
const newRanges = {
xmin: xScale.min,
xmax: xScale.max,
ymin: yScale.min,
ymax: yScale.max
};
if (!_scaleRanges) {
meta._scaleRanges = newRanges;
return true;
}
const changed = _scaleRanges.xmin !== xScale.min
|| _scaleRanges.xmax !== xScale.max
|| _scaleRanges.ymin !== yScale.min
|| _scaleRanges.ymax !== yScale.max;
Object.assign(_scaleRanges, newRanges);
return changed;
}
class PolarAreaController extends DatasetController {
constructor(chart, datasetIndex) {
super(chart, datasetIndex);
this.innerRadius = undefined;
this.outerRadius = undefined;
}
getLabelAndValue(index) {
const me = this;
const meta = me._cachedMeta;
const chart = me.chart;
const labels = chart.data.labels || [];
const value = formatNumber(meta._parsed[index].r, chart.options.locale);
return {
label: labels[index] || '',
value,
};
}
update(mode) {
const arcs = this._cachedMeta.data;
this._updateRadius();
this.updateElements(arcs, 0, arcs.length, mode);
}
_updateRadius() {
const me = this;
const chart = me.chart;
const chartArea = chart.chartArea;
const opts = chart.options;
const minSize = Math.min(chartArea.right - chartArea.left, chartArea.bottom - chartArea.top);
const outerRadius = Math.max(minSize / 2, 0);
const innerRadius = Math.max(opts.cutoutPercentage ? (outerRadius / 100) * (opts.cutoutPercentage) : 1, 0);
const radiusLength = (outerRadius - innerRadius) / chart.getVisibleDatasetCount();
me.outerRadius = outerRadius - (radiusLength * me.index);
me.innerRadius = me.outerRadius - radiusLength;
}
updateElements(arcs, start, count, mode) {
const me = this;
const reset = mode === 'reset';
const chart = me.chart;
const dataset = me.getDataset();
const opts = chart.options;
const animationOpts = opts.animation;
const scale = me._cachedMeta.rScale;
const centerX = scale.xCenter;
const centerY = scale.yCenter;
const datasetStartAngle = scale.getIndexAngle(0) - 0.5 * PI;
let angle = datasetStartAngle;
let i;
const defaultAngle = 360 / me.countVisibleElements();
for (i = 0; i < start; ++i) {
angle += me._computeAngle(i, mode, defaultAngle);
}
for (i = start; i < start + count; i++) {
const arc = arcs[i];
let startAngle = angle;
let endAngle = angle + me._computeAngle(i, mode, defaultAngle);
let outerRadius = chart.getDataVisibility(i) ? scale.getDistanceFromCenterForValue(dataset.data[i]) : 0;
angle = endAngle;
if (reset) {
if (animationOpts.animateScale) {
outerRadius = 0;
}
if (animationOpts.animateRotate) {
startAngle = endAngle = datasetStartAngle;
}
}
const properties = {
x: centerX,
y: centerY,
innerRadius: 0,
outerRadius,
startAngle,
endAngle,
options: me.resolveDataElementOptions(i, arc.active ? 'active' : mode)
};
me.updateElement(arc, i, properties, mode);
}
}
countVisibleElements() {
const dataset = this.getDataset();
const meta = this._cachedMeta;
let count = 0;
meta.data.forEach((element, index) => {
if (!isNaN(dataset.data[index]) && this.chart.getDataVisibility(index)) {
count++;
}
});
return count;
}
_computeAngle(index, mode, defaultAngle) {
return this.chart.getDataVisibility(index)
? toRadians(this.resolveDataElementOptions(index, mode).angle || defaultAngle)
: 0;
}
}
PolarAreaController.id = 'polarArea';
PolarAreaController.defaults = {
dataElementType: 'arc',
animation: {
animateRotate: true,
animateScale: true
},
animations: {
numbers: {
type: 'number',
properties: ['x', 'y', 'startAngle', 'endAngle', 'innerRadius', 'outerRadius']
},
},
indexAxis: 'r',
startAngle: 0,
};
PolarAreaController.overrides = {
aspectRatio: 1,
plugins: {
legend: {
labels: {
generateLabels(chart) {
const data = chart.data;
if (data.labels.length && data.datasets.length) {
const {labels: {pointStyle}} = chart.legend.options;
return data.labels.map((label, i) => {
const meta = chart.getDatasetMeta(0);
const style = meta.controller.getStyle(i);
return {
text: label,
fillStyle: style.backgroundColor,
strokeStyle: style.borderColor,
lineWidth: style.borderWidth,
pointStyle: pointStyle,
hidden: !chart.getDataVisibility(i),
index: i
};
});
}
return [];
}
},
onClick(e, legendItem, legend) {
legend.chart.toggleDataVisibility(legendItem.index);
legend.chart.update();
}
},
tooltip: {
callbacks: {
title() {
return '';
},
label(context) {
return context.chart.data.labels[context.dataIndex] + ': ' + context.formattedValue;
}
}
}
},
scales: {
r: {
type: 'radialLinear',
angleLines: {
display: false
},
beginAtZero: true,
grid: {
circular: true
},
pointLabels: {
display: false
},
startAngle: 0
}
}
};
class PieController extends DoughnutController {
}
PieController.id = 'pie';
PieController.defaults = {
cutout: 0,
rotation: 0,
circumference: 360,
radius: '100%'
};
class RadarController extends DatasetController {
getLabelAndValue(index) {
const me = this;
const vScale = me._cachedMeta.vScale;
const parsed = me.getParsed(index);
return {
label: vScale.getLabels()[index],
value: '' + vScale.getLabelForValue(parsed[vScale.axis])
};
}
update(mode) {
const me = this;
const meta = me._cachedMeta;
const line = meta.dataset;
const points = meta.data || [];
const labels = meta.iScale.getLabels();
line.points = points;
if (mode !== 'resize') {
const options = me.resolveDatasetElementOptions(mode);
if (!me.options.showLine) {
options.borderWidth = 0;
}
const properties = {
_loop: true,
_fullLoop: labels.length === points.length,
options
};
me.updateElement(line, undefined, properties, mode);
}
me.updateElements(points, 0, points.length, mode);
}
updateElements(points, start, count, mode) {
const me = this;
const dataset = me.getDataset();
const scale = me._cachedMeta.rScale;
const reset = mode === 'reset';
for (let i = start; i < start + count; i++) {
const point = points[i];
const options = me.resolveDataElementOptions(i, point.active ? 'active' : mode);
const pointPosition = scale.getPointPositionForValue(i, dataset.data[i]);
const x = reset ? scale.xCenter : pointPosition.x;
const y = reset ? scale.yCenter : pointPosition.y;
const properties = {
x,
y,
angle: pointPosition.angle,
skip: isNaN(x) || isNaN(y),
options
};
me.updateElement(point, i, properties, mode);
}
}
}
RadarController.id = 'radar';
RadarController.defaults = {
datasetElementType: 'line',
dataElementType: 'point',
indexAxis: 'r',
showLine: true,
elements: {
line: {
fill: 'start'
}
},
};
RadarController.overrides = {
aspectRatio: 1,
scales: {
r: {
type: 'radialLinear',
}
}
};
class ScatterController extends LineController {
}
ScatterController.id = 'scatter';
ScatterController.defaults = {
showLine: false,
fill: false
};
ScatterController.overrides = {
interaction: {
mode: 'point'
},
plugins: {
tooltip: {
callbacks: {
title() {
return '';
},
label(item) {
return '(' + item.label + ', ' + item.formattedValue + ')';
}
}
}
},
scales: {
x: {
type: 'linear'
},
y: {
type: 'linear'
}
}
};
var controllers = /*#__PURE__*/Object.freeze({
__proto__: null,
BarController: BarController,
BubbleController: BubbleController,
DoughnutController: DoughnutController,
LineController: LineController,
PolarAreaController: PolarAreaController,
PieController: PieController,
RadarController: RadarController,
ScatterController: ScatterController
});
function clipArc(ctx, element, endAngle) {
const {startAngle, pixelMargin, x, y, outerRadius, innerRadius} = element;
let angleMargin = pixelMargin / outerRadius;
ctx.beginPath();
ctx.arc(x, y, outerRadius, startAngle - angleMargin, endAngle + angleMargin);
if (innerRadius > pixelMargin) {
angleMargin = pixelMargin / innerRadius;
ctx.arc(x, y, innerRadius, endAngle + angleMargin, startAngle - angleMargin, true);
} else {
ctx.arc(x, y, pixelMargin, endAngle + HALF_PI, startAngle - HALF_PI);
}
ctx.closePath();
ctx.clip();
}
function toRadiusCorners(value) {
return _readValueToProps(value, ['outerStart', 'outerEnd', 'innerStart', 'innerEnd']);
}
function parseBorderRadius$1(arc, innerRadius, outerRadius, angleDelta) {
const o = toRadiusCorners(arc.options.borderRadius);
const halfThickness = (outerRadius - innerRadius) / 2;
const innerLimit = Math.min(halfThickness, angleDelta * innerRadius / 2);
const computeOuterLimit = (val) => {
const outerArcLimit = (outerRadius - Math.min(halfThickness, val)) * angleDelta / 2;
return _limitValue(val, 0, Math.min(halfThickness, outerArcLimit));
};
return {
outerStart: computeOuterLimit(o.outerStart),
outerEnd: computeOuterLimit(o.outerEnd),
innerStart: _limitValue(o.innerStart, 0, innerLimit),
innerEnd: _limitValue(o.innerEnd, 0, innerLimit),
};
}
function rThetaToXY(r, theta, x, y) {
return {
x: x + r * Math.cos(theta),
y: y + r * Math.sin(theta),
};
}
function pathArc(ctx, element, offset, spacing, end) {
const {x, y, startAngle: start, pixelMargin, innerRadius: innerR} = element;
const outerRadius = Math.max(element.outerRadius + spacing + offset - pixelMargin, 0);
const innerRadius = innerR > 0 ? innerR + spacing + offset + pixelMargin : 0;
let spacingOffset = 0;
const alpha = end - start;
if (spacing) {
const noSpacingInnerRadius = innerR > 0 ? innerR - spacing : 0;
const noSpacingOuterRadius = outerRadius > 0 ? outerRadius - spacing : 0;
const avNogSpacingRadius = (noSpacingInnerRadius + noSpacingOuterRadius) / 2;
const adjustedAngle = avNogSpacingRadius !== 0 ? (alpha * avNogSpacingRadius) / (avNogSpacingRadius + spacing) : alpha;
spacingOffset = (alpha - adjustedAngle) / 2;
}
const beta = Math.max(0.001, alpha * outerRadius - offset / PI) / outerRadius;
const angleOffset = (alpha - beta) / 2;
const startAngle = start + angleOffset + spacingOffset;
const endAngle = end - angleOffset - spacingOffset;
const {outerStart, outerEnd, innerStart, innerEnd} = parseBorderRadius$1(element, innerRadius, outerRadius, endAngle - startAngle);
const outerStartAdjustedRadius = outerRadius - outerStart;
const outerEndAdjustedRadius = outerRadius - outerEnd;
const outerStartAdjustedAngle = startAngle + outerStart / outerStartAdjustedRadius;
const outerEndAdjustedAngle = endAngle - outerEnd / outerEndAdjustedRadius;
const innerStartAdjustedRadius = innerRadius + innerStart;
const innerEndAdjustedRadius = innerRadius + innerEnd;
const innerStartAdjustedAngle = startAngle + innerStart / innerStartAdjustedRadius;
const innerEndAdjustedAngle = endAngle - innerEnd / innerEndAdjustedRadius;
ctx.beginPath();
ctx.arc(x, y, outerRadius, outerStartAdjustedAngle, outerEndAdjustedAngle);
if (outerEnd > 0) {
const pCenter = rThetaToXY(outerEndAdjustedRadius, outerEndAdjustedAngle, x, y);
ctx.arc(pCenter.x, pCenter.y, outerEnd, outerEndAdjustedAngle, endAngle + HALF_PI);
}
const p4 = rThetaToXY(innerEndAdjustedRadius, endAngle, x, y);
ctx.lineTo(p4.x, p4.y);
if (innerEnd > 0) {
const pCenter = rThetaToXY(innerEndAdjustedRadius, innerEndAdjustedAngle, x, y);
ctx.arc(pCenter.x, pCenter.y, innerEnd, endAngle + HALF_PI, innerEndAdjustedAngle + Math.PI);
}
ctx.arc(x, y, innerRadius, endAngle - (innerEnd / innerRadius), startAngle + (innerStart / innerRadius), true);
if (innerStart > 0) {
const pCenter = rThetaToXY(innerStartAdjustedRadius, innerStartAdjustedAngle, x, y);
ctx.arc(pCenter.x, pCenter.y, innerStart, innerStartAdjustedAngle + Math.PI, startAngle - HALF_PI);
}
const p8 = rThetaToXY(outerStartAdjustedRadius, startAngle, x, y);
ctx.lineTo(p8.x, p8.y);
if (outerStart > 0) {
const pCenter = rThetaToXY(outerStartAdjustedRadius, outerStartAdjustedAngle, x, y);
ctx.arc(pCenter.x, pCenter.y, outerStart, startAngle - HALF_PI, outerStartAdjustedAngle);
}
ctx.closePath();
}
function drawArc(ctx, element, offset, spacing) {
const {fullCircles, startAngle, circumference} = element;
let endAngle = element.endAngle;
if (fullCircles) {
pathArc(ctx, element, offset, spacing, startAngle + TAU);
for (let i = 0; i < fullCircles; ++i) {
ctx.fill();
}
if (!isNaN(circumference)) {
endAngle = startAngle + circumference % TAU;
if (circumference % TAU === 0) {
endAngle += TAU;
}
}
}
pathArc(ctx, element, offset, spacing, endAngle);
ctx.fill();
return endAngle;
}
function drawFullCircleBorders(ctx, element, inner) {
const {x, y, startAngle, pixelMargin, fullCircles} = element;
const outerRadius = Math.max(element.outerRadius - pixelMargin, 0);
const innerRadius = element.innerRadius + pixelMargin;
let i;
if (inner) {
clipArc(ctx, element, startAngle + TAU);
}
ctx.beginPath();
ctx.arc(x, y, innerRadius, startAngle + TAU, startAngle, true);
for (i = 0; i < fullCircles; ++i) {
ctx.stroke();
}
ctx.beginPath();
ctx.arc(x, y, outerRadius, startAngle, startAngle + TAU);
for (i = 0; i < fullCircles; ++i) {
ctx.stroke();
}
}
function drawBorder(ctx, element, offset, spacing, endAngle) {
const {options} = element;
const inner = options.borderAlign === 'inner';
if (!options.borderWidth) {
return;
}
if (inner) {
ctx.lineWidth = options.borderWidth * 2;
ctx.lineJoin = 'round';
} else {
ctx.lineWidth = options.borderWidth;
ctx.lineJoin = 'bevel';
}
if (element.fullCircles) {
drawFullCircleBorders(ctx, element, inner);
}
if (inner) {
clipArc(ctx, element, endAngle);
}
pathArc(ctx, element, offset, spacing, endAngle);
ctx.stroke();
}
class ArcElement extends Element {
constructor(cfg) {
super();
this.options = undefined;
this.circumference = undefined;
this.startAngle = undefined;
this.endAngle = undefined;
this.innerRadius = undefined;
this.outerRadius = undefined;
this.pixelMargin = 0;
this.fullCircles = 0;
if (cfg) {
Object.assign(this, cfg);
}
}
inRange(chartX, chartY, useFinalPosition) {
const point = this.getProps(['x', 'y'], useFinalPosition);
const {angle, distance} = getAngleFromPoint(point, {x: chartX, y: chartY});
const {startAngle, endAngle, innerRadius, outerRadius, circumference} = this.getProps([
'startAngle',
'endAngle',
'innerRadius',
'outerRadius',
'circumference'
], useFinalPosition);
const rAdjust = this.options.spacing / 2;
const betweenAngles = circumference >= TAU || _angleBetween(angle, startAngle, endAngle);
const withinRadius = (distance >= innerRadius + rAdjust && distance <= outerRadius + rAdjust);
return (betweenAngles && withinRadius);
}
getCenterPoint(useFinalPosition) {
const {x, y, startAngle, endAngle, innerRadius, outerRadius} = this.getProps([
'x',
'y',
'startAngle',
'endAngle',
'innerRadius',
'outerRadius',
'circumference',
], useFinalPosition);
const {offset, spacing} = this.options;
const halfAngle = (startAngle + endAngle) / 2;
const halfRadius = (innerRadius + outerRadius + spacing + offset) / 2;
return {
x: x + Math.cos(halfAngle) * halfRadius,
y: y + Math.sin(halfAngle) * halfRadius
};
}
tooltipPosition(useFinalPosition) {
return this.getCenterPoint(useFinalPosition);
}
draw(ctx) {
const me = this;
const {options, circumference} = me;
const offset = (options.offset || 0) / 2;
const spacing = (options.spacing || 0) / 2;
me.pixelMargin = (options.borderAlign === 'inner') ? 0.33 : 0;
me.fullCircles = circumference > TAU ? Math.floor(circumference / TAU) : 0;
if (circumference === 0 || me.innerRadius < 0 || me.outerRadius < 0) {
return;
}
ctx.save();
let radiusOffset = 0;
if (offset) {
radiusOffset = offset / 2;
const halfAngle = (me.startAngle + me.endAngle) / 2;
ctx.translate(Math.cos(halfAngle) * radiusOffset, Math.sin(halfAngle) * radiusOffset);
if (me.circumference >= PI) {
radiusOffset = offset;
}
}
ctx.fillStyle = options.backgroundColor;
ctx.strokeStyle = options.borderColor;
const endAngle = drawArc(ctx, me, radiusOffset, spacing);
drawBorder(ctx, me, radiusOffset, spacing, endAngle);
ctx.restore();
}
}
ArcElement.id = 'arc';
ArcElement.defaults = {
borderAlign: 'center',
borderColor: '#fff',
borderRadius: 0,
borderWidth: 2,
offset: 0,
spacing: 0,
angle: undefined,
};
ArcElement.defaultRoutes = {
backgroundColor: 'backgroundColor'
};
function setStyle(ctx, options, style = options) {
ctx.lineCap = valueOrDefault(style.borderCapStyle, options.borderCapStyle);
ctx.setLineDash(valueOrDefault(style.borderDash, options.borderDash));
ctx.lineDashOffset = valueOrDefault(style.borderDashOffset, options.borderDashOffset);
ctx.lineJoin = valueOrDefault(style.borderJoinStyle, options.borderJoinStyle);
ctx.lineWidth = valueOrDefault(style.borderWidth, options.borderWidth);
ctx.strokeStyle = valueOrDefault(style.borderColor, options.borderColor);
}
function lineTo(ctx, previous, target) {
ctx.lineTo(target.x, target.y);
}
function getLineMethod(options) {
if (options.stepped) {
return _steppedLineTo;
}
if (options.tension || options.cubicInterpolationMode === 'monotone') {
return _bezierCurveTo;
}
return lineTo;
}
function pathVars(points, segment, params = {}) {
const count = points.length;
const {start: paramsStart = 0, end: paramsEnd = count - 1} = params;
const {start: segmentStart, end: segmentEnd} = segment;
const start = Math.max(paramsStart, segmentStart);
const end = Math.min(paramsEnd, segmentEnd);
const outside = paramsStart < segmentStart && paramsEnd < segmentStart || paramsStart > segmentEnd && paramsEnd > segmentEnd;
return {
count,
start,
loop: segment.loop,
ilen: end < start && !outside ? count + end - start : end - start
};
}
function pathSegment(ctx, line, segment, params) {
const {points, options} = line;
const {count, start, loop, ilen} = pathVars(points, segment, params);
const lineMethod = getLineMethod(options);
let {move = true, reverse} = params || {};
let i, point, prev;
for (i = 0; i <= ilen; ++i) {
point = points[(start + (reverse ? ilen - i : i)) % count];
if (point.skip) {
continue;
} else if (move) {
ctx.moveTo(point.x, point.y);
move = false;
} else {
lineMethod(ctx, prev, point, reverse, options.stepped);
}
prev = point;
}
if (loop) {
point = points[(start + (reverse ? ilen : 0)) % count];
lineMethod(ctx, prev, point, reverse, options.stepped);
}
return !!loop;
}
function fastPathSegment(ctx, line, segment, params) {
const points = line.points;
const {count, start, ilen} = pathVars(points, segment, params);
const {move = true, reverse} = params || {};
let avgX = 0;
let countX = 0;
let i, point, prevX, minY, maxY, lastY;
const pointIndex = (index) => (start + (reverse ? ilen - index : index)) % count;
const drawX = () => {
if (minY !== maxY) {
ctx.lineTo(avgX, maxY);
ctx.lineTo(avgX, minY);
ctx.lineTo(avgX, lastY);
}
};
if (move) {
point = points[pointIndex(0)];
ctx.moveTo(point.x, point.y);
}
for (i = 0; i <= ilen; ++i) {
point = points[pointIndex(i)];
if (point.skip) {
continue;
}
const x = point.x;
const y = point.y;
const truncX = x | 0;
if (truncX === prevX) {
if (y < minY) {
minY = y;
} else if (y > maxY) {
maxY = y;
}
avgX = (countX * avgX + x) / ++countX;
} else {
drawX();
ctx.lineTo(x, y);
prevX = truncX;
countX = 0;
minY = maxY = y;
}
lastY = y;
}
drawX();
}
function _getSegmentMethod(line) {
const opts = line.options;
const borderDash = opts.borderDash && opts.borderDash.length;
const useFastPath = !line._decimated && !line._loop && !opts.tension && opts.cubicInterpolationMode !== 'monotone' && !opts.stepped && !borderDash;
return useFastPath ? fastPathSegment : pathSegment;
}
function _getInterpolationMethod(options) {
if (options.stepped) {
return _steppedInterpolation;
}
if (options.tension || options.cubicInterpolationMode === 'monotone') {
return _bezierInterpolation;
}
return _pointInLine;
}
function strokePathWithCache(ctx, line, start, count) {
let path = line._path;
if (!path) {
path = line._path = new Path2D();
if (line.path(path, start, count)) {
path.closePath();
}
}
setStyle(ctx, line.options);
ctx.stroke(path);
}
function strokePathDirect(ctx, line, start, count) {
const {segments, options} = line;
const segmentMethod = _getSegmentMethod(line);
for (const segment of segments) {
setStyle(ctx, options, segment.style);
ctx.beginPath();
if (segmentMethod(ctx, line, segment, {start, end: start + count - 1})) {
ctx.closePath();
}
ctx.stroke();
}
}
const usePath2D = typeof Path2D === 'function';
function draw(ctx, line, start, count) {
if (usePath2D && line.segments.length === 1) {
strokePathWithCache(ctx, line, start, count);
} else {
strokePathDirect(ctx, line, start, count);
}
}
class LineElement extends Element {
constructor(cfg) {
super();
this.animated = true;
this.options = undefined;
this._loop = undefined;
this._fullLoop = undefined;
this._path = undefined;
this._points = undefined;
this._segments = undefined;
this._decimated = false;
this._pointsUpdated = false;
this._datasetIndex = undefined;
if (cfg) {
Object.assign(this, cfg);
}
}
updateControlPoints(chartArea, indexAxis) {
const me = this;
const options = me.options;
if ((options.tension || options.cubicInterpolationMode === 'monotone') && !options.stepped && !me._pointsUpdated) {
const loop = options.spanGaps ? me._loop : me._fullLoop;
_updateBezierControlPoints(me._points, options, chartArea, loop, indexAxis);
me._pointsUpdated = true;
}
}
set points(points) {
const me = this;
me._points = points;
delete me._segments;
delete me._path;
me._pointsUpdated = false;
}
get points() {
return this._points;
}
get segments() {
return this._segments || (this._segments = _computeSegments(this, this.options.segment));
}
first() {
const segments = this.segments;
const points = this.points;
return segments.length && points[segments[0].start];
}
last() {
const segments = this.segments;
const points = this.points;
const count = segments.length;
return count && points[segments[count - 1].end];
}
interpolate(point, property) {
const me = this;
const options = me.options;
const value = point[property];
const points = me.points;
const segments = _boundSegments(me, {property, start: value, end: value});
if (!segments.length) {
return;
}
const result = [];
const _interpolate = _getInterpolationMethod(options);
let i, ilen;
for (i = 0, ilen = segments.length; i < ilen; ++i) {
const {start, end} = segments[i];
const p1 = points[start];
const p2 = points[end];
if (p1 === p2) {
result.push(p1);
continue;
}
const t = Math.abs((value - p1[property]) / (p2[property] - p1[property]));
const interpolated = _interpolate(p1, p2, t, options.stepped);
interpolated[property] = point[property];
result.push(interpolated);
}
return result.length === 1 ? result[0] : result;
}
pathSegment(ctx, segment, params) {
const segmentMethod = _getSegmentMethod(this);
return segmentMethod(ctx, this, segment, params);
}
path(ctx, start, count) {
const me = this;
const segments = me.segments;
const segmentMethod = _getSegmentMethod(me);
let loop = me._loop;
start = start || 0;
count = count || (me.points.length - start);
for (const segment of segments) {
loop &= segmentMethod(ctx, me, segment, {start, end: start + count - 1});
}
return !!loop;
}
draw(ctx, chartArea, start, count) {
const me = this;
const options = me.options || {};
const points = me.points || [];
if (!points.length || !options.borderWidth) {
return;
}
ctx.save();
draw(ctx, me, start, count);
ctx.restore();
if (me.animated) {
me._pointsUpdated = false;
me._path = undefined;
}
}
}
LineElement.id = 'line';
LineElement.defaults = {
borderCapStyle: 'butt',
borderDash: [],
borderDashOffset: 0,
borderJoinStyle: 'miter',
borderWidth: 3,
capBezierPoints: true,
cubicInterpolationMode: 'default',
fill: false,
spanGaps: false,
stepped: false,
tension: 0,
};
LineElement.defaultRoutes = {
backgroundColor: 'backgroundColor',
borderColor: 'borderColor'
};
LineElement.descriptors = {
_scriptable: true,
_indexable: (name) => name !== 'borderDash' && name !== 'fill',
};
function inRange$1(el, pos, axis, useFinalPosition) {
const options = el.options;
const {[axis]: value} = el.getProps([axis], useFinalPosition);
return (Math.abs(pos - value) < options.radius + options.hitRadius);
}
class PointElement extends Element {
constructor(cfg) {
super();
this.options = undefined;
this.parsed = undefined;
this.skip = undefined;
this.stop = undefined;
if (cfg) {
Object.assign(this, cfg);
}
}
inRange(mouseX, mouseY, useFinalPosition) {
const options = this.options;
const {x, y} = this.getProps(['x', 'y'], useFinalPosition);
return ((Math.pow(mouseX - x, 2) + Math.pow(mouseY - y, 2)) < Math.pow(options.hitRadius + options.radius, 2));
}
inXRange(mouseX, useFinalPosition) {
return inRange$1(this, mouseX, 'x', useFinalPosition);
}
inYRange(mouseY, useFinalPosition) {
return inRange$1(this, mouseY, 'y', useFinalPosition);
}
getCenterPoint(useFinalPosition) {
const {x, y} = this.getProps(['x', 'y'], useFinalPosition);
return {x, y};
}
size(options) {
options = options || this.options || {};
let radius = options.radius || 0;
radius = Math.max(radius, radius && options.hoverRadius || 0);
const borderWidth = radius && options.borderWidth || 0;
return (radius + borderWidth) * 2;
}
draw(ctx, area) {
const me = this;
const options = me.options;
if (me.skip || options.radius < 0.1 || !_isPointInArea(me, area, me.size(options) / 2)) {
return;
}
ctx.strokeStyle = options.borderColor;
ctx.lineWidth = options.borderWidth;
ctx.fillStyle = options.backgroundColor;
drawPoint(ctx, options, me.x, me.y);
}
getRange() {
const options = this.options || {};
return options.radius + options.hitRadius;
}
}
PointElement.id = 'point';
PointElement.defaults = {
borderWidth: 1,
hitRadius: 1,
hoverBorderWidth: 1,
hoverRadius: 4,
pointStyle: 'circle',
radius: 3,
rotation: 0
};
PointElement.defaultRoutes = {
backgroundColor: 'backgroundColor',
borderColor: 'borderColor'
};
function getBarBounds(bar, useFinalPosition) {
const {x, y, base, width, height} = bar.getProps(['x', 'y', 'base', 'width', 'height'], useFinalPosition);
let left, right, top, bottom, half;
if (bar.horizontal) {
half = height / 2;
left = Math.min(x, base);
right = Math.max(x, base);
top = y - half;
bottom = y + half;
} else {
half = width / 2;
left = x - half;
right = x + half;
top = Math.min(y, base);
bottom = Math.max(y, base);
}
return {left, top, right, bottom};
}
function skipOrLimit(skip, value, min, max) {
return skip ? 0 : _limitValue(value, min, max);
}
function parseBorderWidth(bar, maxW, maxH) {
const value = bar.options.borderWidth;
const skip = bar.borderSkipped;
const o = toTRBL(value);
return {
t: skipOrLimit(skip.top, o.top, 0, maxH),
r: skipOrLimit(skip.right, o.right, 0, maxW),
b: skipOrLimit(skip.bottom, o.bottom, 0, maxH),
l: skipOrLimit(skip.left, o.left, 0, maxW)
};
}
function parseBorderRadius(bar, maxW, maxH) {
const {enableBorderRadius} = bar.getProps(['enableBorderRadius']);
const value = bar.options.borderRadius;
const o = toTRBLCorners(value);
const maxR = Math.min(maxW, maxH);
const skip = bar.borderSkipped;
const enableBorder = enableBorderRadius || isObject(value);
return {
topLeft: skipOrLimit(!enableBorder || skip.top || skip.left, o.topLeft, 0, maxR),
topRight: skipOrLimit(!enableBorder || skip.top || skip.right, o.topRight, 0, maxR),
bottomLeft: skipOrLimit(!enableBorder || skip.bottom || skip.left, o.bottomLeft, 0, maxR),
bottomRight: skipOrLimit(!enableBorder || skip.bottom || skip.right, o.bottomRight, 0, maxR)
};
}
function boundingRects(bar) {
const bounds = getBarBounds(bar);
const width = bounds.right - bounds.left;
const height = bounds.bottom - bounds.top;
const border = parseBorderWidth(bar, width / 2, height / 2);
const radius = parseBorderRadius(bar, width / 2, height / 2);
return {
outer: {
x: bounds.left,
y: bounds.top,
w: width,
h: height,
radius
},
inner: {
x: bounds.left + border.l,
y: bounds.top + border.t,
w: width - border.l - border.r,
h: height - border.t - border.b,
radius: {
topLeft: Math.max(0, radius.topLeft - Math.max(border.t, border.l)),
topRight: Math.max(0, radius.topRight - Math.max(border.t, border.r)),
bottomLeft: Math.max(0, radius.bottomLeft - Math.max(border.b, border.l)),
bottomRight: Math.max(0, radius.bottomRight - Math.max(border.b, border.r)),
}
}
};
}
function inRange(bar, x, y, useFinalPosition) {
const skipX = x === null;
const skipY = y === null;
const skipBoth = skipX && skipY;
const bounds = bar && !skipBoth && getBarBounds(bar, useFinalPosition);
return bounds
&& (skipX || x >= bounds.left && x <= bounds.right)
&& (skipY || y >= bounds.top && y <= bounds.bottom);
}
function hasRadius(radius) {
return radius.topLeft || radius.topRight || radius.bottomLeft || radius.bottomRight;
}
function addNormalRectPath(ctx, rect) {
ctx.rect(rect.x, rect.y, rect.w, rect.h);
}
function inflateRect(rect, amount, refRect = {}) {
const x = rect.x !== refRect.x ? -amount : 0;
const y = rect.y !== refRect.y ? -amount : 0;
const w = (rect.x + rect.w !== refRect.x + refRect.w ? amount : 0) - x;
const h = (rect.y + rect.h !== refRect.y + refRect.h ? amount : 0) - y;
return {
x: rect.x + x,
y: rect.y + y,
w: rect.w + w,
h: rect.h + h,
radius: rect.radius
};
}
class BarElement extends Element {
constructor(cfg) {
super();
this.options = undefined;
this.horizontal = undefined;
this.base = undefined;
this.width = undefined;
this.height = undefined;
if (cfg) {
Object.assign(this, cfg);
}
}
draw(ctx) {
const options = this.options;
const {inner, outer} = boundingRects(this);
const addRectPath = hasRadius(outer.radius) ? addRoundedRectPath : addNormalRectPath;
const inflateAmount = 0.33;
ctx.save();
if (outer.w !== inner.w || outer.h !== inner.h) {
ctx.beginPath();
addRectPath(ctx, inflateRect(outer, inflateAmount, inner));
ctx.clip();
addRectPath(ctx, inflateRect(inner, -inflateAmount, outer));
ctx.fillStyle = options.borderColor;
ctx.fill('evenodd');
}
ctx.beginPath();
addRectPath(ctx, inflateRect(inner, inflateAmount, outer));
ctx.fillStyle = options.backgroundColor;
ctx.fill();
ctx.restore();
}
inRange(mouseX, mouseY, useFinalPosition) {
return inRange(this, mouseX, mouseY, useFinalPosition);
}
inXRange(mouseX, useFinalPosition) {
return inRange(this, mouseX, null, useFinalPosition);
}
inYRange(mouseY, useFinalPosition) {
return inRange(this, null, mouseY, useFinalPosition);
}
getCenterPoint(useFinalPosition) {
const {x, y, base, horizontal} = this.getProps(['x', 'y', 'base', 'horizontal'], useFinalPosition);
return {
x: horizontal ? (x + base) / 2 : x,
y: horizontal ? y : (y + base) / 2
};
}
getRange(axis) {
return axis === 'x' ? this.width / 2 : this.height / 2;
}
}
BarElement.id = 'bar';
BarElement.defaults = {
borderSkipped: 'start',
borderWidth: 0,
borderRadius: 0,
enableBorderRadius: true,
pointStyle: undefined
};
BarElement.defaultRoutes = {
backgroundColor: 'backgroundColor',
borderColor: 'borderColor'
};
var elements = /*#__PURE__*/Object.freeze({
__proto__: null,
ArcElement: ArcElement,
LineElement: LineElement,
PointElement: PointElement,
BarElement: BarElement
});
function lttbDecimation(data, start, count, availableWidth, options) {
const samples = options.samples || availableWidth;
if (samples >= count) {
return data.slice(start, start + count);
}
const decimated = [];
const bucketWidth = (count - 2) / (samples - 2);
let sampledIndex = 0;
const endIndex = start + count - 1;
let a = start;
let i, maxAreaPoint, maxArea, area, nextA;
decimated[sampledIndex++] = data[a];
for (i = 0; i < samples - 2; i++) {
let avgX = 0;
let avgY = 0;
let j;
const avgRangeStart = Math.floor((i + 1) * bucketWidth) + 1 + start;
const avgRangeEnd = Math.min(Math.floor((i + 2) * bucketWidth) + 1, count) + start;
const avgRangeLength = avgRangeEnd - avgRangeStart;
for (j = avgRangeStart; j < avgRangeEnd; j++) {
avgX += data[j].x;
avgY += data[j].y;
}
avgX /= avgRangeLength;
avgY /= avgRangeLength;
const rangeOffs = Math.floor(i * bucketWidth) + 1 + start;
const rangeTo = Math.min(Math.floor((i + 1) * bucketWidth) + 1, count) + start;
const {x: pointAx, y: pointAy} = data[a];
maxArea = area = -1;
for (j = rangeOffs; j < rangeTo; j++) {
area = 0.5 * Math.abs(
(pointAx - avgX) * (data[j].y - pointAy) -
(pointAx - data[j].x) * (avgY - pointAy)
);
if (area > maxArea) {
maxArea = area;
maxAreaPoint = data[j];
nextA = j;
}
}
decimated[sampledIndex++] = maxAreaPoint;
a = nextA;
}
decimated[sampledIndex++] = data[endIndex];
return decimated;
}
function minMaxDecimation(data, start, count, availableWidth) {
let avgX = 0;
let countX = 0;
let i, point, x, y, prevX, minIndex, maxIndex, startIndex, minY, maxY;
const decimated = [];
const endIndex = start + count - 1;
const xMin = data[start].x;
const xMax = data[endIndex].x;
const dx = xMax - xMin;
for (i = start; i < start + count; ++i) {
point = data[i];
x = (point.x - xMin) / dx * availableWidth;
y = point.y;
const truncX = x | 0;
if (truncX === prevX) {
if (y < minY) {
minY = y;
minIndex = i;
} else if (y > maxY) {
maxY = y;
maxIndex = i;
}
avgX = (countX * avgX + point.x) / ++countX;
} else {
const lastIndex = i - 1;
if (!isNullOrUndef(minIndex) && !isNullOrUndef(maxIndex)) {
const intermediateIndex1 = Math.min(minIndex, maxIndex);
const intermediateIndex2 = Math.max(minIndex, maxIndex);
if (intermediateIndex1 !== startIndex && intermediateIndex1 !== lastIndex) {
decimated.push({
...data[intermediateIndex1],
x: avgX,
});
}
if (intermediateIndex2 !== startIndex && intermediateIndex2 !== lastIndex) {
decimated.push({
...data[intermediateIndex2],
x: avgX
});
}
}
if (i > 0 && lastIndex !== startIndex) {
decimated.push(data[lastIndex]);
}
decimated.push(point);
prevX = truncX;
countX = 0;
minY = maxY = y;
minIndex = maxIndex = startIndex = i;
}
}
return decimated;
}
function cleanDecimatedDataset(dataset) {
if (dataset._decimated) {
const data = dataset._data;
delete dataset._decimated;
delete dataset._data;
Object.defineProperty(dataset, 'data', {value: data});
}
}
function cleanDecimatedData(chart) {
chart.data.datasets.forEach((dataset) => {
cleanDecimatedDataset(dataset);
});
}
function getStartAndCountOfVisiblePointsSimplified(meta, points) {
const pointCount = points.length;
let start = 0;
let count;
const {iScale} = meta;
const {min, max, minDefined, maxDefined} = iScale.getUserBounds();
if (minDefined) {
start = _limitValue(_lookupByKey(points, iScale.axis, min).lo, 0, pointCount - 1);
}
if (maxDefined) {
count = _limitValue(_lookupByKey(points, iScale.axis, max).hi + 1, start, pointCount) - start;
} else {
count = pointCount - start;
}
return {start, count};
}
var plugin_decimation = {
id: 'decimation',
defaults: {
algorithm: 'min-max',
enabled: false,
},
beforeElementsUpdate: (chart, args, options) => {
if (!options.enabled) {
cleanDecimatedData(chart);
return;
}
const availableWidth = chart.width;
chart.data.datasets.forEach((dataset, datasetIndex) => {
const {_data, indexAxis} = dataset;
const meta = chart.getDatasetMeta(datasetIndex);
const data = _data || dataset.data;
if (resolve([indexAxis, chart.options.indexAxis]) === 'y') {
return;
}
if (meta.type !== 'line') {
return;
}
const xAxis = chart.scales[meta.xAxisID];
if (xAxis.type !== 'linear' && xAxis.type !== 'time') {
return;
}
if (chart.options.parsing) {
return;
}
let {start, count} = getStartAndCountOfVisiblePointsSimplified(meta, data);
const threshold = options.threshold || 4 * availableWidth;
if (count <= threshold) {
cleanDecimatedDataset(dataset);
return;
}
if (isNullOrUndef(_data)) {
dataset._data = data;
delete dataset.data;
Object.defineProperty(dataset, 'data', {
configurable: true,
enumerable: true,
get: function() {
return this._decimated;
},
set: function(d) {
this._data = d;
}
});
}
let decimated;
switch (options.algorithm) {
case 'lttb':
decimated = lttbDecimation(data, start, count, availableWidth, options);
break;
case 'min-max':
decimated = minMaxDecimation(data, start, count, availableWidth);
break;
default:
throw new Error(`Unsupported decimation algorithm '${options.algorithm}'`);
}
dataset._decimated = decimated;
});
},
destroy(chart) {
cleanDecimatedData(chart);
}
};
function getLineByIndex(chart, index) {
const meta = chart.getDatasetMeta(index);
const visible = meta && chart.isDatasetVisible(index);
return visible ? meta.dataset : null;
}
function parseFillOption(line) {
const options = line.options;
const fillOption = options.fill;
let fill = valueOrDefault(fillOption && fillOption.target, fillOption);
if (fill === undefined) {
fill = !!options.backgroundColor;
}
if (fill === false || fill === null) {
return false;
}
if (fill === true) {
return 'origin';
}
return fill;
}
function decodeFill(line, index, count) {
const fill = parseFillOption(line);
if (isObject(fill)) {
return isNaN(fill.value) ? false : fill;
}
let target = parseFloat(fill);
if (isNumberFinite(target) && Math.floor(target) === target) {
if (fill[0] === '-' || fill[0] === '+') {
target = index + target;
}
if (target === index || target < 0 || target >= count) {
return false;
}
return target;
}
return ['origin', 'start', 'end', 'stack', 'shape'].indexOf(fill) >= 0 && fill;
}
function computeLinearBoundary(source) {
const {scale = {}, fill} = source;
let target = null;
let horizontal;
if (fill === 'start') {
target = scale.bottom;
} else if (fill === 'end') {
target = scale.top;
} else if (isObject(fill)) {
target = scale.getPixelForValue(fill.value);
} else if (scale.getBasePixel) {
target = scale.getBasePixel();
}
if (isNumberFinite(target)) {
horizontal = scale.isHorizontal();
return {
x: horizontal ? target : null,
y: horizontal ? null : target
};
}
return null;
}
class simpleArc {
constructor(opts) {
this.x = opts.x;
this.y = opts.y;
this.radius = opts.radius;
}
pathSegment(ctx, bounds, opts) {
const {x, y, radius} = this;
bounds = bounds || {start: 0, end: TAU};
ctx.arc(x, y, radius, bounds.end, bounds.start, true);
return !opts.bounds;
}
interpolate(point) {
const {x, y, radius} = this;
const angle = point.angle;
return {
x: x + Math.cos(angle) * radius,
y: y + Math.sin(angle) * radius,
angle
};
}
}
function computeCircularBoundary(source) {
const {scale, fill} = source;
const options = scale.options;
const length = scale.getLabels().length;
const target = [];
const start = options.reverse ? scale.max : scale.min;
const end = options.reverse ? scale.min : scale.max;
let i, center, value;
if (fill === 'start') {
value = start;
} else if (fill === 'end') {
value = end;
} else if (isObject(fill)) {
value = fill.value;
} else {
value = scale.getBaseValue();
}
if (options.grid.circular) {
center = scale.getPointPositionForValue(0, start);
return new simpleArc({
x: center.x,
y: center.y,
radius: scale.getDistanceFromCenterForValue(value)
});
}
for (i = 0; i < length; ++i) {
target.push(scale.getPointPositionForValue(i, value));
}
return target;
}
function computeBoundary(source) {
const scale = source.scale || {};
if (scale.getPointPositionForValue) {
return computeCircularBoundary(source);
}
return computeLinearBoundary(source);
}
function findSegmentEnd(start, end, points) {
for (;end > start; end--) {
const point = points[end];
if (!isNaN(point.x) && !isNaN(point.y)) {
break;
}
}
return end;
}
function pointsFromSegments(boundary, line) {
const {x = null, y = null} = boundary || {};
const linePoints = line.points;
const points = [];
line.segments.forEach(({start, end}) => {
end = findSegmentEnd(start, end, linePoints);
const first = linePoints[start];
const last = linePoints[end];
if (y !== null) {
points.push({x: first.x, y});
points.push({x: last.x, y});
} else if (x !== null) {
points.push({x, y: first.y});
points.push({x, y: last.y});
}
});
return points;
}
function buildStackLine(source) {
const {chart, scale, index, line} = source;
const points = [];
const segments = line.segments;
const sourcePoints = line.points;
const linesBelow = getLinesBelow(chart, index);
linesBelow.push(createBoundaryLine({x: null, y: scale.bottom}, line));
for (let i = 0; i < segments.length; i++) {
const segment = segments[i];
for (let j = segment.start; j <= segment.end; j++) {
addPointsBelow(points, sourcePoints[j], linesBelow);
}
}
return new LineElement({points, options: {}});
}
const isLineAndNotInHideAnimation = (meta) => meta.type === 'line' && !meta.hidden;
function getLinesBelow(chart, index) {
const below = [];
const metas = chart.getSortedVisibleDatasetMetas();
for (let i = 0; i < metas.length; i++) {
const meta = metas[i];
if (meta.index === index) {
break;
}
if (isLineAndNotInHideAnimation(meta)) {
below.unshift(meta.dataset);
}
}
return below;
}
function addPointsBelow(points, sourcePoint, linesBelow) {
const postponed = [];
for (let j = 0; j < linesBelow.length; j++) {
const line = linesBelow[j];
const {first, last, point} = findPoint(line, sourcePoint, 'x');
if (!point || (first && last)) {
continue;
}
if (first) {
postponed.unshift(point);
} else {
points.push(point);
if (!last) {
break;
}
}
}
points.push(...postponed);
}
function findPoint(line, sourcePoint, property) {
const point = line.interpolate(sourcePoint, property);
if (!point) {
return {};
}
const pointValue = point[property];
const segments = line.segments;
const linePoints = line.points;
let first = false;
let last = false;
for (let i = 0; i < segments.length; i++) {
const segment = segments[i];
const firstValue = linePoints[segment.start][property];
const lastValue = linePoints[segment.end][property];
if (pointValue >= firstValue && pointValue <= lastValue) {
first = pointValue === firstValue;
last = pointValue === lastValue;
break;
}
}
return {first, last, point};
}
function getTarget(source) {
const {chart, fill, line} = source;
if (isNumberFinite(fill)) {
return getLineByIndex(chart, fill);
}
if (fill === 'stack') {
return buildStackLine(source);
}
if (fill === 'shape') {
return true;
}
const boundary = computeBoundary(source);
if (boundary instanceof simpleArc) {
return boundary;
}
return createBoundaryLine(boundary, line);
}
function createBoundaryLine(boundary, line) {
let points = [];
let _loop = false;
if (isArray(boundary)) {
_loop = true;
points = boundary;
} else {
points = pointsFromSegments(boundary, line);
}
return points.length ? new LineElement({
points,
options: {tension: 0},
_loop,
_fullLoop: _loop
}) : null;
}
function resolveTarget(sources, index, propagate) {
const source = sources[index];
let fill = source.fill;
const visited = [index];
let target;
if (!propagate) {
return fill;
}
while (fill !== false && visited.indexOf(fill) === -1) {
if (!isNumberFinite(fill)) {
return fill;
}
target = sources[fill];
if (!target) {
return false;
}
if (target.visible) {
return fill;
}
visited.push(fill);
fill = target.fill;
}
return false;
}
function _clip(ctx, target, clipY) {
ctx.beginPath();
target.path(ctx);
ctx.lineTo(target.last().x, clipY);
ctx.lineTo(target.first().x, clipY);
ctx.closePath();
ctx.clip();
}
function getBounds(property, first, last, loop) {
if (loop) {
return;
}
let start = first[property];
let end = last[property];
if (property === 'angle') {
start = _normalizeAngle(start);
end = _normalizeAngle(end);
}
return {property, start, end};
}
function _getEdge(a, b, prop, fn) {
if (a && b) {
return fn(a[prop], b[prop]);
}
return a ? a[prop] : b ? b[prop] : 0;
}
function _segments(line, target, property) {
const segments = line.segments;
const points = line.points;
const tpoints = target.points;
const parts = [];
for (const segment of segments) {
let {start, end} = segment;
end = findSegmentEnd(start, end, points);
const bounds = getBounds(property, points[start], points[end], segment.loop);
if (!target.segments) {
parts.push({
source: segment,
target: bounds,
start: points[start],
end: points[end]
});
continue;
}
const targetSegments = _boundSegments(target, bounds);
for (const tgt of targetSegments) {
const subBounds = getBounds(property, tpoints[tgt.start], tpoints[tgt.end], tgt.loop);
const fillSources = _boundSegment(segment, points, subBounds);
for (const fillSource of fillSources) {
parts.push({
source: fillSource,
target: tgt,
start: {
[property]: _getEdge(bounds, subBounds, 'start', Math.max)
},
end: {
[property]: _getEdge(bounds, subBounds, 'end', Math.min)
}
});
}
}
}
return parts;
}
function clipBounds(ctx, scale, bounds) {
const {top, bottom} = scale.chart.chartArea;
const {property, start, end} = bounds || {};
if (property === 'x') {
ctx.beginPath();
ctx.rect(start, top, end - start, bottom - top);
ctx.clip();
}
}
function interpolatedLineTo(ctx, target, point, property) {
const interpolatedPoint = target.interpolate(point, property);
if (interpolatedPoint) {
ctx.lineTo(interpolatedPoint.x, interpolatedPoint.y);
}
}
function _fill(ctx, cfg) {
const {line, target, property, color, scale} = cfg;
const segments = _segments(line, target, property);
for (const {source: src, target: tgt, start, end} of segments) {
const {style: {backgroundColor = color} = {}} = src;
const notShape = target !== true;
ctx.save();
ctx.fillStyle = backgroundColor;
clipBounds(ctx, scale, notShape && getBounds(property, start, end));
ctx.beginPath();
const lineLoop = !!line.pathSegment(ctx, src);
let loop;
if (notShape) {
if (lineLoop) {
ctx.closePath();
} else {
interpolatedLineTo(ctx, target, end, property);
}
const targetLoop = !!target.pathSegment(ctx, tgt, {move: lineLoop, reverse: true});
loop = lineLoop && targetLoop;
if (!loop) {
interpolatedLineTo(ctx, target, start, property);
}
}
ctx.closePath();
ctx.fill(loop ? 'evenodd' : 'nonzero');
ctx.restore();
}
}
function doFill(ctx, cfg) {
const {line, target, above, below, area, scale} = cfg;
const property = line._loop ? 'angle' : cfg.axis;
ctx.save();
if (property === 'x' && below !== above) {
_clip(ctx, target, area.top);
_fill(ctx, {line, target, color: above, scale, property});
ctx.restore();
ctx.save();
_clip(ctx, target, area.bottom);
}
_fill(ctx, {line, target, color: below, scale, property});
ctx.restore();
}
function drawfill(ctx, source, area) {
const target = getTarget(source);
const {line, scale, axis} = source;
const lineOpts = line.options;
const fillOption = lineOpts.fill;
const color = lineOpts.backgroundColor;
const {above = color, below = color} = fillOption || {};
if (target && line.points.length) {
clipArea(ctx, area);
doFill(ctx, {line, target, above, below, area, scale, axis});
unclipArea(ctx);
}
}
var plugin_filler = {
id: 'filler',
afterDatasetsUpdate(chart, _args, options) {
const count = (chart.data.datasets || []).length;
const sources = [];
let meta, i, line, source;
for (i = 0; i < count; ++i) {
meta = chart.getDatasetMeta(i);
line = meta.dataset;
source = null;
if (line && line.options && line instanceof LineElement) {
source = {
visible: chart.isDatasetVisible(i),
index: i,
fill: decodeFill(line, i, count),
chart,
axis: meta.controller.options.indexAxis,
scale: meta.vScale,
line,
};
}
meta.$filler = source;
sources.push(source);
}
for (i = 0; i < count; ++i) {
source = sources[i];
if (!source || source.fill === false) {
continue;
}
source.fill = resolveTarget(sources, i, options.propagate);
}
},
beforeDraw(chart, _args, options) {
const draw = options.drawTime === 'beforeDraw';
const metasets = chart.getSortedVisibleDatasetMetas();
const area = chart.chartArea;
for (let i = metasets.length - 1; i >= 0; --i) {
const source = metasets[i].$filler;
if (!source) {
continue;
}
source.line.updateControlPoints(area, source.axis);
if (draw) {
drawfill(chart.ctx, source, area);
}
}
},
beforeDatasetsDraw(chart, _args, options) {
if (options.drawTime !== 'beforeDatasetsDraw') {
return;
}
const metasets = chart.getSortedVisibleDatasetMetas();
for (let i = metasets.length - 1; i >= 0; --i) {
const source = metasets[i].$filler;
if (source) {
drawfill(chart.ctx, source, chart.chartArea);
}
}
},
beforeDatasetDraw(chart, args, options) {
const source = args.meta.$filler;
if (!source || source.fill === false || options.drawTime !== 'beforeDatasetDraw') {
return;
}
drawfill(chart.ctx, source, chart.chartArea);
},
defaults: {
propagate: true,
drawTime: 'beforeDatasetDraw'
}
};
const getBoxSize = (labelOpts, fontSize) => {
let {boxHeight = fontSize, boxWidth = fontSize} = labelOpts;
if (labelOpts.usePointStyle) {
boxHeight = Math.min(boxHeight, fontSize);
boxWidth = Math.min(boxWidth, fontSize);
}
return {
boxWidth,
boxHeight,
itemHeight: Math.max(fontSize, boxHeight)
};
};
const itemsEqual = (a, b) => a !== null && b !== null && a.datasetIndex === b.datasetIndex && a.index === b.index;
class Legend extends Element {
constructor(config) {
super();
this._added = false;
this.legendHitBoxes = [];
this._hoveredItem = null;
this.doughnutMode = false;
this.chart = config.chart;
this.options = config.options;
this.ctx = config.ctx;
this.legendItems = undefined;
this.columnSizes = undefined;
this.lineWidths = undefined;
this.maxHeight = undefined;
this.maxWidth = undefined;
this.top = undefined;
this.bottom = undefined;
this.left = undefined;
this.right = undefined;
this.height = undefined;
this.width = undefined;
this._margins = undefined;
this.position = undefined;
this.weight = undefined;
this.fullSize = undefined;
}
update(maxWidth, maxHeight, margins) {
const me = this;
me.maxWidth = maxWidth;
me.maxHeight = maxHeight;
me._margins = margins;
me.setDimensions();
me.buildLabels();
me.fit();
}
setDimensions() {
const me = this;
if (me.isHorizontal()) {
me.width = me.maxWidth;
me.left = me._margins.left;
me.right = me.width;
} else {
me.height = me.maxHeight;
me.top = me._margins.top;
me.bottom = me.height;
}
}
buildLabels() {
const me = this;
const labelOpts = me.options.labels || {};
let legendItems = callback(labelOpts.generateLabels, [me.chart], me) || [];
if (labelOpts.filter) {
legendItems = legendItems.filter((item) => labelOpts.filter(item, me.chart.data));
}
if (labelOpts.sort) {
legendItems = legendItems.sort((a, b) => labelOpts.sort(a, b, me.chart.data));
}
if (me.options.reverse) {
legendItems.reverse();
}
me.legendItems = legendItems;
}
fit() {
const me = this;
const {options, ctx} = me;
if (!options.display) {
me.width = me.height = 0;
return;
}
const labelOpts = options.labels;
const labelFont = toFont(labelOpts.font);
const fontSize = labelFont.size;
const titleHeight = me._computeTitleHeight();
const {boxWidth, itemHeight} = getBoxSize(labelOpts, fontSize);
let width, height;
ctx.font = labelFont.string;
if (me.isHorizontal()) {
width = me.maxWidth;
height = me._fitRows(titleHeight, fontSize, boxWidth, itemHeight) + 10;
} else {
height = me.maxHeight;
width = me._fitCols(titleHeight, fontSize, boxWidth, itemHeight) + 10;
}
me.width = Math.min(width, options.maxWidth || me.maxWidth);
me.height = Math.min(height, options.maxHeight || me.maxHeight);
}
_fitRows(titleHeight, fontSize, boxWidth, itemHeight) {
const me = this;
const {ctx, maxWidth, options: {labels: {padding}}} = me;
const hitboxes = me.legendHitBoxes = [];
const lineWidths = me.lineWidths = [0];
const lineHeight = itemHeight + padding;
let totalHeight = titleHeight;
ctx.textAlign = 'left';
ctx.textBaseline = 'middle';
let row = -1;
let top = -lineHeight;
me.legendItems.forEach((legendItem, i) => {
const itemWidth = boxWidth + (fontSize / 2) + ctx.measureText(legendItem.text).width;
if (i === 0 || lineWidths[lineWidths.length - 1] + itemWidth + 2 * padding > maxWidth) {
totalHeight += lineHeight;
lineWidths[lineWidths.length - (i > 0 ? 0 : 1)] = 0;
top += lineHeight;
row++;
}
hitboxes[i] = {left: 0, top, row, width: itemWidth, height: itemHeight};
lineWidths[lineWidths.length - 1] += itemWidth + padding;
});
return totalHeight;
}
_fitCols(titleHeight, fontSize, boxWidth, itemHeight) {
const me = this;
const {ctx, maxHeight, options: {labels: {padding}}} = me;
const hitboxes = me.legendHitBoxes = [];
const columnSizes = me.columnSizes = [];
const heightLimit = maxHeight - titleHeight;
let totalWidth = padding;
let currentColWidth = 0;
let currentColHeight = 0;
let left = 0;
let col = 0;
me.legendItems.forEach((legendItem, i) => {
const itemWidth = boxWidth + (fontSize / 2) + ctx.measureText(legendItem.text).width;
if (i > 0 && currentColHeight + itemHeight + 2 * padding > heightLimit) {
totalWidth += currentColWidth + padding;
columnSizes.push({width: currentColWidth, height: currentColHeight});
left += currentColWidth + padding;
col++;
currentColWidth = currentColHeight = 0;
}
hitboxes[i] = {left, top: currentColHeight, col, width: itemWidth, height: itemHeight};
currentColWidth = Math.max(currentColWidth, itemWidth);
currentColHeight += itemHeight + padding;
});
totalWidth += currentColWidth;
columnSizes.push({width: currentColWidth, height: currentColHeight});
return totalWidth;
}
adjustHitBoxes() {
const me = this;
if (!me.options.display) {
return;
}
const titleHeight = me._computeTitleHeight();
const {legendHitBoxes: hitboxes, options: {align, labels: {padding}, rtl}} = me;
const rtlHelper = getRtlAdapter(rtl, me.left, me.width);
if (this.isHorizontal()) {
let row = 0;
let left = _alignStartEnd(align, me.left + padding, me.right - me.lineWidths[row]);
for (const hitbox of hitboxes) {
if (row !== hitbox.row) {
row = hitbox.row;
left = _alignStartEnd(align, me.left + padding, me.right - me.lineWidths[row]);
}
hitbox.top += me.top + titleHeight + padding;
hitbox.left = rtlHelper.leftForLtr(rtlHelper.x(left), hitbox.width);
left += hitbox.width + padding;
}
} else {
let col = 0;
let top = _alignStartEnd(align, me.top + titleHeight + padding, me.bottom - me.columnSizes[col].height);
for (const hitbox of hitboxes) {
if (hitbox.col !== col) {
col = hitbox.col;
top = _alignStartEnd(align, me.top + titleHeight + padding, me.bottom - me.columnSizes[col].height);
}
hitbox.top = top;
hitbox.left += me.left + padding;
hitbox.left = rtlHelper.leftForLtr(rtlHelper.x(hitbox.left), hitbox.width);
top += hitbox.height + padding;
}
}
}
isHorizontal() {
return this.options.position === 'top' || this.options.position === 'bottom';
}
draw() {
const me = this;
if (me.options.display) {
const ctx = me.ctx;
clipArea(ctx, me);
me._draw();
unclipArea(ctx);
}
}
_draw() {
const me = this;
const {options: opts, columnSizes, lineWidths, ctx} = me;
const {align, labels: labelOpts} = opts;
const defaultColor = defaults.color;
const rtlHelper = getRtlAdapter(opts.rtl, me.left, me.width);
const labelFont = toFont(labelOpts.font);
const {color: fontColor, padding} = labelOpts;
const fontSize = labelFont.size;
const halfFontSize = fontSize / 2;
let cursor;
me.drawTitle();
ctx.textAlign = rtlHelper.textAlign('left');
ctx.textBaseline = 'middle';
ctx.lineWidth = 0.5;
ctx.font = labelFont.string;
const {boxWidth, boxHeight, itemHeight} = getBoxSize(labelOpts, fontSize);
const drawLegendBox = function(x, y, legendItem) {
if (isNaN(boxWidth) || boxWidth <= 0 || isNaN(boxHeight) || boxHeight < 0) {
return;
}
ctx.save();
const lineWidth = valueOrDefault(legendItem.lineWidth, 1);
ctx.fillStyle = valueOrDefault(legendItem.fillStyle, defaultColor);
ctx.lineCap = valueOrDefault(legendItem.lineCap, 'butt');
ctx.lineDashOffset = valueOrDefault(legendItem.lineDashOffset, 0);
ctx.lineJoin = valueOrDefault(legendItem.lineJoin, 'miter');
ctx.lineWidth = lineWidth;
ctx.strokeStyle = valueOrDefault(legendItem.strokeStyle, defaultColor);
ctx.setLineDash(valueOrDefault(legendItem.lineDash, []));
if (labelOpts.usePointStyle) {
const drawOptions = {
radius: boxWidth * Math.SQRT2 / 2,
pointStyle: legendItem.pointStyle,
rotation: legendItem.rotation,
borderWidth: lineWidth
};
const centerX = rtlHelper.xPlus(x, boxWidth / 2);
const centerY = y + halfFontSize;
drawPoint(ctx, drawOptions, centerX, centerY);
} else {
const yBoxTop = y + Math.max((fontSize - boxHeight) / 2, 0);
const xBoxLeft = rtlHelper.leftForLtr(x, boxWidth);
const borderRadius = toTRBLCorners(legendItem.borderRadius);
ctx.beginPath();
if (Object.values(borderRadius).some(v => v !== 0)) {
addRoundedRectPath(ctx, {
x: xBoxLeft,
y: yBoxTop,
w: boxWidth,
h: boxHeight,
radius: borderRadius,
});
} else {
ctx.rect(xBoxLeft, yBoxTop, boxWidth, boxHeight);
}
ctx.fill();
if (lineWidth !== 0) {
ctx.stroke();
}
}
ctx.restore();
};
const fillText = function(x, y, legendItem) {
renderText(ctx, legendItem.text, x, y + (itemHeight / 2), labelFont, {
strikethrough: legendItem.hidden,
textAlign: rtlHelper.textAlign(legendItem.textAlign)
});
};
const isHorizontal = me.isHorizontal();
const titleHeight = this._computeTitleHeight();
if (isHorizontal) {
cursor = {
x: _alignStartEnd(align, me.left + padding, me.right - lineWidths[0]),
y: me.top + padding + titleHeight,
line: 0
};
} else {
cursor = {
x: me.left + padding,
y: _alignStartEnd(align, me.top + titleHeight + padding, me.bottom - columnSizes[0].height),
line: 0
};
}
overrideTextDirection(me.ctx, opts.textDirection);
const lineHeight = itemHeight + padding;
me.legendItems.forEach((legendItem, i) => {
ctx.strokeStyle = legendItem.fontColor || fontColor;
ctx.fillStyle = legendItem.fontColor || fontColor;
const textWidth = ctx.measureText(legendItem.text).width;
const textAlign = rtlHelper.textAlign(legendItem.textAlign || (legendItem.textAlign = labelOpts.textAlign));
const width = boxWidth + halfFontSize + textWidth;
let x = cursor.x;
let y = cursor.y;
rtlHelper.setWidth(me.width);
if (isHorizontal) {
if (i > 0 && x + width + padding > me.right) {
y = cursor.y += lineHeight;
cursor.line++;
x = cursor.x = _alignStartEnd(align, me.left + padding, me.right - lineWidths[cursor.line]);
}
} else if (i > 0 && y + lineHeight > me.bottom) {
x = cursor.x = x + columnSizes[cursor.line].width + padding;
cursor.line++;
y = cursor.y = _alignStartEnd(align, me.top + titleHeight + padding, me.bottom - columnSizes[cursor.line].height);
}
const realX = rtlHelper.x(x);
drawLegendBox(realX, y, legendItem);
x = _textX(textAlign, x + boxWidth + halfFontSize, isHorizontal ? x + width : me.right, opts.rtl);
fillText(rtlHelper.x(x), y, legendItem);
if (isHorizontal) {
cursor.x += width + padding;
} else {
cursor.y += lineHeight;
}
});
restoreTextDirection(me.ctx, opts.textDirection);
}
drawTitle() {
const me = this;
const opts = me.options;
const titleOpts = opts.title;
const titleFont = toFont(titleOpts.font);
const titlePadding = toPadding(titleOpts.padding);
if (!titleOpts.display) {
return;
}
const rtlHelper = getRtlAdapter(opts.rtl, me.left, me.width);
const ctx = me.ctx;
const position = titleOpts.position;
const halfFontSize = titleFont.size / 2;
const topPaddingPlusHalfFontSize = titlePadding.top + halfFontSize;
let y;
let left = me.left;
let maxWidth = me.width;
if (this.isHorizontal()) {
maxWidth = Math.max(...me.lineWidths);
y = me.top + topPaddingPlusHalfFontSize;
left = _alignStartEnd(opts.align, left, me.right - maxWidth);
} else {
const maxHeight = me.columnSizes.reduce((acc, size) => Math.max(acc, size.height), 0);
y = topPaddingPlusHalfFontSize + _alignStartEnd(opts.align, me.top, me.bottom - maxHeight - opts.labels.padding - me._computeTitleHeight());
}
const x = _alignStartEnd(position, left, left + maxWidth);
ctx.textAlign = rtlHelper.textAlign(_toLeftRightCenter(position));
ctx.textBaseline = 'middle';
ctx.strokeStyle = titleOpts.color;
ctx.fillStyle = titleOpts.color;
ctx.font = titleFont.string;
renderText(ctx, titleOpts.text, x, y, titleFont);
}
_computeTitleHeight() {
const titleOpts = this.options.title;
const titleFont = toFont(titleOpts.font);
const titlePadding = toPadding(titleOpts.padding);
return titleOpts.display ? titleFont.lineHeight + titlePadding.height : 0;
}
_getLegendItemAt(x, y) {
const me = this;
let i, hitBox, lh;
if (x >= me.left && x <= me.right && y >= me.top && y <= me.bottom) {
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) {
return me.legendItems[i];
}
}
}
return null;
}
handleEvent(e) {
const me = this;
const opts = me.options;
if (!isListened(e.type, opts)) {
return;
}
const hoveredItem = me._getLegendItemAt(e.x, e.y);
if (e.type === 'mousemove') {
const previous = me._hoveredItem;
const sameItem = itemsEqual(previous, hoveredItem);
if (previous && !sameItem) {
callback(opts.onLeave, [e, previous, me], me);
}
me._hoveredItem = hoveredItem;
if (hoveredItem && !sameItem) {
callback(opts.onHover, [e, hoveredItem, me], me);
}
} else if (hoveredItem) {
callback(opts.onClick, [e, hoveredItem, me], me);
}
}
}
function isListened(type, opts) {
if (type === 'mousemove' && (opts.onHover || opts.onLeave)) {
return true;
}
if (opts.onClick && (type === 'click' || type === 'mouseup')) {
return true;
}
return false;
}
var plugin_legend = {
id: 'legend',
_element: Legend,
start(chart, _args, options) {
const legend = chart.legend = new Legend({ctx: chart.ctx, options, chart});
layouts.configure(chart, legend, options);
layouts.addBox(chart, legend);
},
stop(chart) {
layouts.removeBox(chart, chart.legend);
delete chart.legend;
},
beforeUpdate(chart, _args, options) {
const legend = chart.legend;
layouts.configure(chart, legend, options);
legend.options = options;
},
afterUpdate(chart) {
const legend = chart.legend;
legend.buildLabels();
legend.adjustHitBoxes();
},
afterEvent(chart, args) {
if (!args.replay) {
chart.legend.handleEvent(args.event);
}
},
defaults: {
display: true,
position: 'top',
align: 'center',
fullSize: true,
reverse: false,
weight: 1000,
onClick(e, legendItem, legend) {
const index = legendItem.datasetIndex;
const ci = legend.chart;
if (ci.isDatasetVisible(index)) {
ci.hide(index);
legendItem.hidden = true;
} else {
ci.show(index);
legendItem.hidden = false;
}
},
onHover: null,
onLeave: null,
labels: {
color: (ctx) => ctx.chart.options.color,
boxWidth: 40,
padding: 10,
generateLabels(chart) {
const datasets = chart.data.datasets;
const {labels: {usePointStyle, pointStyle, textAlign, color}} = chart.legend.options;
return chart._getSortedDatasetMetas().map((meta) => {
const style = meta.controller.getStyle(usePointStyle ? 0 : undefined);
const borderWidth = toPadding(style.borderWidth);
return {
text: datasets[meta.index].label,
fillStyle: style.backgroundColor,
fontColor: color,
hidden: !meta.visible,
lineCap: style.borderCapStyle,
lineDash: style.borderDash,
lineDashOffset: style.borderDashOffset,
lineJoin: style.borderJoinStyle,
lineWidth: (borderWidth.width + borderWidth.height) / 4,
strokeStyle: style.borderColor,
pointStyle: pointStyle || style.pointStyle,
rotation: style.rotation,
textAlign: textAlign || style.textAlign,
borderRadius: 0,
datasetIndex: meta.index
};
}, this);
}
},
title: {
color: (ctx) => ctx.chart.options.color,
display: false,
position: 'center',
text: '',
}
},
descriptors: {
_scriptable: (name) => !name.startsWith('on'),
labels: {
_scriptable: (name) => !['generateLabels', 'filter', 'sort'].includes(name),
}
},
};
class Title extends Element {
constructor(config) {
super();
this.chart = config.chart;
this.options = config.options;
this.ctx = config.ctx;
this._padding = undefined;
this.top = undefined;
this.bottom = undefined;
this.left = undefined;
this.right = undefined;
this.width = undefined;
this.height = undefined;
this.position = undefined;
this.weight = undefined;
this.fullSize = undefined;
}
update(maxWidth, maxHeight) {
const me = this;
const opts = me.options;
me.left = 0;
me.top = 0;
if (!opts.display) {
me.width = me.height = me.right = me.bottom = 0;
return;
}
me.width = me.right = maxWidth;
me.height = me.bottom = maxHeight;
const lineCount = isArray(opts.text) ? opts.text.length : 1;
me._padding = toPadding(opts.padding);
const textSize = lineCount * toFont(opts.font).lineHeight + me._padding.height;
if (me.isHorizontal()) {
me.height = textSize;
} else {
me.width = textSize;
}
}
isHorizontal() {
const pos = this.options.position;
return pos === 'top' || pos === 'bottom';
}
_drawArgs(offset) {
const {top, left, bottom, right, options} = this;
const align = options.align;
let rotation = 0;
let maxWidth, titleX, titleY;
if (this.isHorizontal()) {
titleX = _alignStartEnd(align, left, right);
titleY = top + offset;
maxWidth = right - left;
} else {
if (options.position === 'left') {
titleX = left + offset;
titleY = _alignStartEnd(align, bottom, top);
rotation = PI * -0.5;
} else {
titleX = right - offset;
titleY = _alignStartEnd(align, top, bottom);
rotation = PI * 0.5;
}
maxWidth = bottom - top;
}
return {titleX, titleY, maxWidth, rotation};
}
draw() {
const me = this;
const ctx = me.ctx;
const opts = me.options;
if (!opts.display) {
return;
}
const fontOpts = toFont(opts.font);
const lineHeight = fontOpts.lineHeight;
const offset = lineHeight / 2 + me._padding.top;
const {titleX, titleY, maxWidth, rotation} = me._drawArgs(offset);
renderText(ctx, opts.text, 0, 0, fontOpts, {
color: opts.color,
maxWidth,
rotation,
textAlign: _toLeftRightCenter(opts.align),
textBaseline: 'middle',
translation: [titleX, titleY],
});
}
}
function createTitle(chart, titleOpts) {
const title = new Title({
ctx: chart.ctx,
options: titleOpts,
chart
});
layouts.configure(chart, title, titleOpts);
layouts.addBox(chart, title);
chart.titleBlock = title;
}
var plugin_title = {
id: 'title',
_element: Title,
start(chart, _args, options) {
createTitle(chart, options);
},
stop(chart) {
const titleBlock = chart.titleBlock;
layouts.removeBox(chart, titleBlock);
delete chart.titleBlock;
},
beforeUpdate(chart, _args, options) {
const title = chart.titleBlock;
layouts.configure(chart, title, options);
title.options = options;
},
defaults: {
align: 'center',
display: false,
font: {
weight: 'bold',
},
fullSize: true,
padding: 10,
position: 'top',
text: '',
weight: 2000
},
defaultRoutes: {
color: 'color'
},
descriptors: {
_scriptable: true,
_indexable: false,
},
};
const map = new WeakMap();
var plugin_subtitle = {
id: 'subtitle',
start(chart, _args, options) {
const title = new Title({
ctx: chart.ctx,
options,
chart
});
layouts.configure(chart, title, options);
layouts.addBox(chart, title);
map.set(chart, title);
},
stop(chart) {
layouts.removeBox(chart, map.get(chart));
map.delete(chart);
},
beforeUpdate(chart, _args, options) {
const title = map.get(chart);
layouts.configure(chart, title, options);
title.options = options;
},
defaults: {
align: 'center',
display: false,
font: {
weight: 'normal',
},
fullSize: true,
padding: 0,
position: 'top',
text: '',
weight: 1500
},
defaultRoutes: {
color: 'color'
},
descriptors: {
_scriptable: true,
_indexable: false,
},
};
const positioners = {
average(items) {
if (!items.length) {
return false;
}
let i, len;
let x = 0;
let y = 0;
let count = 0;
for (i = 0, len = items.length; i < len; ++i) {
const el = items[i].element;
if (el && el.hasValue()) {
const pos = el.tooltipPosition();
x += pos.x;
y += pos.y;
++count;
}
}
return {
x: x / count,
y: y / count
};
},
nearest(items, eventPosition) {
if (!items.length) {
return false;
}
let x = eventPosition.x;
let y = eventPosition.y;
let minDistance = Number.POSITIVE_INFINITY;
let i, len, nearestElement;
for (i = 0, len = items.length; i < len; ++i) {
const el = items[i].element;
if (el && el.hasValue()) {
const center = el.getCenterPoint();
const d = distanceBetweenPoints(eventPosition, center);
if (d < minDistance) {
minDistance = d;
nearestElement = el;
}
}
}
if (nearestElement) {
const tp = nearestElement.tooltipPosition();
x = tp.x;
y = tp.y;
}
return {
x,
y
};
}
};
function pushOrConcat(base, toPush) {
if (toPush) {
if (isArray(toPush)) {
Array.prototype.push.apply(base, toPush);
} else {
base.push(toPush);
}
}
return base;
}
function splitNewlines(str) {
if ((typeof str === 'string' || str instanceof String) && str.indexOf('\n') > -1) {
return str.split('\n');
}
return str;
}
function createTooltipItem(chart, item) {
const {element, datasetIndex, index} = item;
const controller = chart.getDatasetMeta(datasetIndex).controller;
const {label, value} = controller.getLabelAndValue(index);
return {
chart,
label,
parsed: controller.getParsed(index),
raw: chart.data.datasets[datasetIndex].data[index],
formattedValue: value,
dataset: controller.getDataset(),
dataIndex: index,
datasetIndex,
element
};
}
function getTooltipSize(tooltip, options) {
const ctx = tooltip._chart.ctx;
const {body, footer, title} = tooltip;
const {boxWidth, boxHeight} = options;
const bodyFont = toFont(options.bodyFont);
const titleFont = toFont(options.titleFont);
const footerFont = toFont(options.footerFont);
const titleLineCount = title.length;
const footerLineCount = footer.length;
const bodyLineItemCount = body.length;
const padding = toPadding(options.padding);
let height = padding.height;
let width = 0;
let combinedBodyLength = body.reduce((count, bodyItem) => count + bodyItem.before.length + bodyItem.lines.length + bodyItem.after.length, 0);
combinedBodyLength += tooltip.beforeBody.length + tooltip.afterBody.length;
if (titleLineCount) {
height += titleLineCount * titleFont.lineHeight
+ (titleLineCount - 1) * options.titleSpacing
+ options.titleMarginBottom;
}
if (combinedBodyLength) {
const bodyLineHeight = options.displayColors ? Math.max(boxHeight, bodyFont.lineHeight) : bodyFont.lineHeight;
height += bodyLineItemCount * bodyLineHeight
+ (combinedBodyLength - bodyLineItemCount) * bodyFont.lineHeight
+ (combinedBodyLength - 1) * options.bodySpacing;
}
if (footerLineCount) {
height += options.footerMarginTop
+ footerLineCount * footerFont.lineHeight
+ (footerLineCount - 1) * options.footerSpacing;
}
let widthPadding = 0;
const maxLineWidth = function(line) {
width = Math.max(width, ctx.measureText(line).width + widthPadding);
};
ctx.save();
ctx.font = titleFont.string;
each(tooltip.title, maxLineWidth);
ctx.font = bodyFont.string;
each(tooltip.beforeBody.concat(tooltip.afterBody), maxLineWidth);
widthPadding = options.displayColors ? (boxWidth + 2) : 0;
each(body, (bodyItem) => {
each(bodyItem.before, maxLineWidth);
each(bodyItem.lines, maxLineWidth);
each(bodyItem.after, maxLineWidth);
});
widthPadding = 0;
ctx.font = footerFont.string;
each(tooltip.footer, maxLineWidth);
ctx.restore();
width += padding.width;
return {width, height};
}
function determineYAlign(chart, size) {
const {y, height} = size;
if (y < height / 2) {
return 'top';
} else if (y > (chart.height - height / 2)) {
return 'bottom';
}
return 'center';
}
function doesNotFitWithAlign(xAlign, chart, options, size) {
const {x, width} = size;
const caret = options.caretSize + options.caretPadding;
if (xAlign === 'left' && x + width + caret > chart.width) {
return true;
}
if (xAlign === 'right' && x - width - caret < 0) {
return true;
}
}
function determineXAlign(chart, options, size, yAlign) {
const {x, width} = size;
const {width: chartWidth, chartArea: {left, right}} = chart;
let xAlign = 'center';
if (yAlign === 'center') {
xAlign = x <= (left + right) / 2 ? 'left' : 'right';
} else if (x <= width / 2) {
xAlign = 'left';
} else if (x >= chartWidth - width / 2) {
xAlign = 'right';
}
if (doesNotFitWithAlign(xAlign, chart, options, size)) {
xAlign = 'center';
}
return xAlign;
}
function determineAlignment(chart, options, size) {
const yAlign = options.yAlign || determineYAlign(chart, size);
return {
xAlign: options.xAlign || determineXAlign(chart, options, size, yAlign),
yAlign
};
}
function alignX(size, xAlign) {
let {x, width} = size;
if (xAlign === 'right') {
x -= width;
} else if (xAlign === 'center') {
x -= (width / 2);
}
return x;
}
function alignY(size, yAlign, paddingAndSize) {
let {y, height} = size;
if (yAlign === 'top') {
y += paddingAndSize;
} else if (yAlign === 'bottom') {
y -= height + paddingAndSize;
} else {
y -= (height / 2);
}
return y;
}
function getBackgroundPoint(options, size, alignment, chart) {
const {caretSize, caretPadding, cornerRadius} = options;
const {xAlign, yAlign} = alignment;
const paddingAndSize = caretSize + caretPadding;
const radiusAndPadding = cornerRadius + caretPadding;
let x = alignX(size, xAlign);
const y = alignY(size, yAlign, paddingAndSize);
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: _limitValue(x, 0, chart.width - size.width),
y: _limitValue(y, 0, chart.height - size.height)
};
}
function getAlignedX(tooltip, align, options) {
const padding = toPadding(options.padding);
return align === 'center'
? tooltip.x + tooltip.width / 2
: align === 'right'
? tooltip.x + tooltip.width - padding.right
: tooltip.x + padding.left;
}
function getBeforeAfterBodyLines(callback) {
return pushOrConcat([], splitNewlines(callback));
}
function createTooltipContext(parent, tooltip, tooltipItems) {
return Object.assign(Object.create(parent), {
tooltip,
tooltipItems,
type: 'tooltip'
});
}
function overrideCallbacks(callbacks, context) {
const override = context && context.dataset && context.dataset.tooltip && context.dataset.tooltip.callbacks;
return override ? callbacks.override(override) : callbacks;
}
class Tooltip extends Element {
constructor(config) {
super();
this.opacity = 0;
this._active = [];
this._chart = config._chart;
this._eventPosition = undefined;
this._size = undefined;
this._cachedAnimations = undefined;
this._tooltipItems = [];
this.$animations = undefined;
this.$context = undefined;
this.options = config.options;
this.dataPoints = undefined;
this.title = undefined;
this.beforeBody = undefined;
this.body = undefined;
this.afterBody = undefined;
this.footer = undefined;
this.xAlign = undefined;
this.yAlign = undefined;
this.x = undefined;
this.y = undefined;
this.height = undefined;
this.width = undefined;
this.caretX = undefined;
this.caretY = undefined;
this.labelColors = undefined;
this.labelPointStyles = undefined;
this.labelTextColors = undefined;
}
initialize(options) {
this.options = options;
this._cachedAnimations = undefined;
this.$context = undefined;
}
_resolveAnimations() {
const me = this;
const cached = me._cachedAnimations;
if (cached) {
return cached;
}
const chart = me._chart;
const options = me.options.setContext(me.getContext());
const opts = options.enabled && chart.options.animation && options.animations;
const animations = new Animations(me._chart, opts);
if (opts._cacheable) {
me._cachedAnimations = Object.freeze(animations);
}
return animations;
}
getContext() {
const me = this;
return me.$context ||
(me.$context = createTooltipContext(me._chart.getContext(), me, me._tooltipItems));
}
getTitle(context, options) {
const me = this;
const {callbacks} = options;
const beforeTitle = callbacks.beforeTitle.apply(me, [context]);
const title = callbacks.title.apply(me, [context]);
const afterTitle = callbacks.afterTitle.apply(me, [context]);
let lines = [];
lines = pushOrConcat(lines, splitNewlines(beforeTitle));
lines = pushOrConcat(lines, splitNewlines(title));
lines = pushOrConcat(lines, splitNewlines(afterTitle));
return lines;
}
getBeforeBody(tooltipItems, options) {
return getBeforeAfterBodyLines(options.callbacks.beforeBody.apply(this, [tooltipItems]));
}
getBody(tooltipItems, options) {
const me = this;
const {callbacks} = options;
const bodyItems = [];
each(tooltipItems, (context) => {
const bodyItem = {
before: [],
lines: [],
after: []
};
const scoped = overrideCallbacks(callbacks, context);
pushOrConcat(bodyItem.before, splitNewlines(scoped.beforeLabel.call(me, context)));
pushOrConcat(bodyItem.lines, scoped.label.call(me, context));
pushOrConcat(bodyItem.after, splitNewlines(scoped.afterLabel.call(me, context)));
bodyItems.push(bodyItem);
});
return bodyItems;
}
getAfterBody(tooltipItems, options) {
return getBeforeAfterBodyLines(options.callbacks.afterBody.apply(this, [tooltipItems]));
}
getFooter(tooltipItems, options) {
const me = this;
const {callbacks} = options;
const beforeFooter = callbacks.beforeFooter.apply(me, [tooltipItems]);
const footer = callbacks.footer.apply(me, [tooltipItems]);
const afterFooter = callbacks.afterFooter.apply(me, [tooltipItems]);
let lines = [];
lines = pushOrConcat(lines, splitNewlines(beforeFooter));
lines = pushOrConcat(lines, splitNewlines(footer));
lines = pushOrConcat(lines, splitNewlines(afterFooter));
return lines;
}
_createItems(options) {
const me = this;
const active = me._active;
const data = me._chart.data;
const labelColors = [];
const labelPointStyles = [];
const labelTextColors = [];
let tooltipItems = [];
let i, len;
for (i = 0, len = active.length; i < len; ++i) {
tooltipItems.push(createTooltipItem(me._chart, active[i]));
}
if (options.filter) {
tooltipItems = tooltipItems.filter((element, index, array) => options.filter(element, index, array, data));
}
if (options.itemSort) {
tooltipItems = tooltipItems.sort((a, b) => options.itemSort(a, b, data));
}
each(tooltipItems, (context) => {
const scoped = overrideCallbacks(options.callbacks, context);
labelColors.push(scoped.labelColor.call(me, context));
labelPointStyles.push(scoped.labelPointStyle.call(me, context));
labelTextColors.push(scoped.labelTextColor.call(me, context));
});
me.labelColors = labelColors;
me.labelPointStyles = labelPointStyles;
me.labelTextColors = labelTextColors;
me.dataPoints = tooltipItems;
return tooltipItems;
}
update(changed, replay) {
const me = this;
const options = me.options.setContext(me.getContext());
const active = me._active;
let properties;
let tooltipItems = [];
if (!active.length) {
if (me.opacity !== 0) {
properties = {
opacity: 0
};
}
} else {
const position = positioners[options.position].call(me, active, me._eventPosition);
tooltipItems = me._createItems(options);
me.title = me.getTitle(tooltipItems, options);
me.beforeBody = me.getBeforeBody(tooltipItems, options);
me.body = me.getBody(tooltipItems, options);
me.afterBody = me.getAfterBody(tooltipItems, options);
me.footer = me.getFooter(tooltipItems, options);
const size = me._size = getTooltipSize(me, options);
const positionAndSize = Object.assign({}, position, size);
const alignment = determineAlignment(me._chart, options, positionAndSize);
const backgroundPoint = getBackgroundPoint(options, positionAndSize, alignment, me._chart);
me.xAlign = alignment.xAlign;
me.yAlign = alignment.yAlign;
properties = {
opacity: 1,
x: backgroundPoint.x,
y: backgroundPoint.y,
width: size.width,
height: size.height,
caretX: position.x,
caretY: position.y
};
}
me._tooltipItems = tooltipItems;
me.$context = undefined;
if (properties) {
me._resolveAnimations().update(me, properties);
}
if (changed && options.external) {
options.external.call(me, {chart: me._chart, tooltip: me, replay});
}
}
drawCaret(tooltipPoint, ctx, size, options) {
const caretPosition = this.getCaretPosition(tooltipPoint, size, options);
ctx.lineTo(caretPosition.x1, caretPosition.y1);
ctx.lineTo(caretPosition.x2, caretPosition.y2);
ctx.lineTo(caretPosition.x3, caretPosition.y3);
}
getCaretPosition(tooltipPoint, size, options) {
const {xAlign, yAlign} = this;
const {cornerRadius, caretSize} = options;
const {x: ptX, y: ptY} = tooltipPoint;
const {width, height} = size;
let x1, x2, x3, y1, y2, y3;
if (yAlign === 'center') {
y2 = ptY + (height / 2);
if (xAlign === 'left') {
x1 = ptX;
x2 = x1 - caretSize;
y1 = y2 + caretSize;
y3 = y2 - caretSize;
} else {
x1 = ptX + width;
x2 = x1 + caretSize;
y1 = y2 - caretSize;
y3 = y2 + caretSize;
}
x3 = x1;
} else {
if (xAlign === 'left') {
x2 = ptX + cornerRadius + (caretSize);
} else if (xAlign === 'right') {
x2 = ptX + width - cornerRadius - caretSize;
} else {
x2 = this.caretX;
}
if (yAlign === 'top') {
y1 = ptY;
y2 = y1 - caretSize;
x1 = x2 - caretSize;
x3 = x2 + caretSize;
} else {
y1 = ptY + height;
y2 = y1 + caretSize;
x1 = x2 + caretSize;
x3 = x2 - caretSize;
}
y3 = y1;
}
return {x1, x2, x3, y1, y2, y3};
}
drawTitle(pt, ctx, options) {
const me = this;
const title = me.title;
const length = title.length;
let titleFont, titleSpacing, i;
if (length) {
const rtlHelper = getRtlAdapter(options.rtl, me.x, me.width);
pt.x = getAlignedX(me, options.titleAlign, options);
ctx.textAlign = rtlHelper.textAlign(options.titleAlign);
ctx.textBaseline = 'middle';
titleFont = toFont(options.titleFont);
titleSpacing = options.titleSpacing;
ctx.fillStyle = options.titleColor;
ctx.font = titleFont.string;
for (i = 0; i < length; ++i) {
ctx.fillText(title[i], rtlHelper.x(pt.x), pt.y + titleFont.lineHeight / 2);
pt.y += titleFont.lineHeight + titleSpacing;
if (i + 1 === length) {
pt.y += options.titleMarginBottom - titleSpacing;
}
}
}
}
_drawColorBox(ctx, pt, i, rtlHelper, options) {
const me = this;
const labelColors = me.labelColors[i];
const labelPointStyle = me.labelPointStyles[i];
const {boxHeight, boxWidth} = options;
const bodyFont = toFont(options.bodyFont);
const colorX = getAlignedX(me, 'left', options);
const rtlColorX = rtlHelper.x(colorX);
const yOffSet = boxHeight < bodyFont.lineHeight ? (bodyFont.lineHeight - boxHeight) / 2 : 0;
const colorY = pt.y + yOffSet;
if (options.usePointStyle) {
const drawOptions = {
radius: Math.min(boxWidth, boxHeight) / 2,
pointStyle: labelPointStyle.pointStyle,
rotation: labelPointStyle.rotation,
borderWidth: 1
};
const centerX = rtlHelper.leftForLtr(rtlColorX, boxWidth) + boxWidth / 2;
const centerY = colorY + boxHeight / 2;
ctx.strokeStyle = options.multiKeyBackground;
ctx.fillStyle = options.multiKeyBackground;
drawPoint(ctx, drawOptions, centerX, centerY);
ctx.strokeStyle = labelColors.borderColor;
ctx.fillStyle = labelColors.backgroundColor;
drawPoint(ctx, drawOptions, centerX, centerY);
} else {
ctx.lineWidth = labelColors.borderWidth || 1;
ctx.strokeStyle = labelColors.borderColor;
ctx.setLineDash(labelColors.borderDash || []);
ctx.lineDashOffset = labelColors.borderDashOffset || 0;
const outerX = rtlHelper.leftForLtr(rtlColorX, boxWidth);
const innerX = rtlHelper.leftForLtr(rtlHelper.xPlus(rtlColorX, 1), boxWidth - 2);
const borderRadius = toTRBLCorners(labelColors.borderRadius);
if (Object.values(borderRadius).some(v => v !== 0)) {
ctx.beginPath();
ctx.fillStyle = options.multiKeyBackground;
addRoundedRectPath(ctx, {
x: outerX,
y: colorY,
w: boxWidth,
h: boxHeight,
radius: borderRadius,
});
ctx.fill();
ctx.stroke();
ctx.fillStyle = labelColors.backgroundColor;
ctx.beginPath();
addRoundedRectPath(ctx, {
x: innerX,
y: colorY + 1,
w: boxWidth - 2,
h: boxHeight - 2,
radius: borderRadius,
});
ctx.fill();
} else {
ctx.fillStyle = options.multiKeyBackground;
ctx.fillRect(outerX, colorY, boxWidth, boxHeight);
ctx.strokeRect(outerX, colorY, boxWidth, boxHeight);
ctx.fillStyle = labelColors.backgroundColor;
ctx.fillRect(innerX, colorY + 1, boxWidth - 2, boxHeight - 2);
}
}
ctx.fillStyle = me.labelTextColors[i];
}
drawBody(pt, ctx, options) {
const me = this;
const {body} = me;
const {bodySpacing, bodyAlign, displayColors, boxHeight, boxWidth} = options;
const bodyFont = toFont(options.bodyFont);
let bodyLineHeight = bodyFont.lineHeight;
let xLinePadding = 0;
const rtlHelper = getRtlAdapter(options.rtl, me.x, me.width);
const fillLineOfText = function(line) {
ctx.fillText(line, rtlHelper.x(pt.x + xLinePadding), pt.y + bodyLineHeight / 2);
pt.y += bodyLineHeight + bodySpacing;
};
const bodyAlignForCalculation = rtlHelper.textAlign(bodyAlign);
let bodyItem, textColor, lines, i, j, ilen, jlen;
ctx.textAlign = bodyAlign;
ctx.textBaseline = 'middle';
ctx.font = bodyFont.string;
pt.x = getAlignedX(me, bodyAlignForCalculation, options);
ctx.fillStyle = options.bodyColor;
each(me.beforeBody, fillLineOfText);
xLinePadding = displayColors && bodyAlignForCalculation !== 'right'
? bodyAlign === 'center' ? (boxWidth / 2 + 1) : (boxWidth + 2)
: 0;
for (i = 0, ilen = body.length; i < ilen; ++i) {
bodyItem = body[i];
textColor = me.labelTextColors[i];
ctx.fillStyle = textColor;
each(bodyItem.before, fillLineOfText);
lines = bodyItem.lines;
if (displayColors && lines.length) {
me._drawColorBox(ctx, pt, i, rtlHelper, options);
bodyLineHeight = Math.max(bodyFont.lineHeight, boxHeight);
}
for (j = 0, jlen = lines.length; j < jlen; ++j) {
fillLineOfText(lines[j]);
bodyLineHeight = bodyFont.lineHeight;
}
each(bodyItem.after, fillLineOfText);
}
xLinePadding = 0;
bodyLineHeight = bodyFont.lineHeight;
each(me.afterBody, fillLineOfText);
pt.y -= bodySpacing;
}
drawFooter(pt, ctx, options) {
const me = this;
const footer = me.footer;
const length = footer.length;
let footerFont, i;
if (length) {
const rtlHelper = getRtlAdapter(options.rtl, me.x, me.width);
pt.x = getAlignedX(me, options.footerAlign, options);
pt.y += options.footerMarginTop;
ctx.textAlign = rtlHelper.textAlign(options.footerAlign);
ctx.textBaseline = 'middle';
footerFont = toFont(options.footerFont);
ctx.fillStyle = options.footerColor;
ctx.font = footerFont.string;
for (i = 0; i < length; ++i) {
ctx.fillText(footer[i], rtlHelper.x(pt.x), pt.y + footerFont.lineHeight / 2);
pt.y += footerFont.lineHeight + options.footerSpacing;
}
}
}
drawBackground(pt, ctx, tooltipSize, options) {
const {xAlign, yAlign} = this;
const {x, y} = pt;
const {width, height} = tooltipSize;
const radius = options.cornerRadius;
ctx.fillStyle = options.backgroundColor;
ctx.strokeStyle = options.borderColor;
ctx.lineWidth = options.borderWidth;
ctx.beginPath();
ctx.moveTo(x + radius, y);
if (yAlign === 'top') {
this.drawCaret(pt, ctx, tooltipSize, options);
}
ctx.lineTo(x + width - radius, y);
ctx.quadraticCurveTo(x + width, y, x + width, y + radius);
if (yAlign === 'center' && xAlign === 'right') {
this.drawCaret(pt, ctx, tooltipSize, options);
}
ctx.lineTo(x + width, y + height - radius);
ctx.quadraticCurveTo(x + width, y + height, x + width - radius, y + height);
if (yAlign === 'bottom') {
this.drawCaret(pt, ctx, tooltipSize, options);
}
ctx.lineTo(x + radius, y + height);
ctx.quadraticCurveTo(x, y + height, x, y + height - radius);
if (yAlign === 'center' && xAlign === 'left') {
this.drawCaret(pt, ctx, tooltipSize, options);
}
ctx.lineTo(x, y + radius);
ctx.quadraticCurveTo(x, y, x + radius, y);
ctx.closePath();
ctx.fill();
if (options.borderWidth > 0) {
ctx.stroke();
}
}
_updateAnimationTarget(options) {
const me = this;
const chart = me._chart;
const anims = me.$animations;
const animX = anims && anims.x;
const animY = anims && anims.y;
if (animX || animY) {
const position = positioners[options.position].call(me, me._active, me._eventPosition);
if (!position) {
return;
}
const size = me._size = getTooltipSize(me, options);
const positionAndSize = Object.assign({}, position, me._size);
const alignment = determineAlignment(chart, options, positionAndSize);
const point = getBackgroundPoint(options, positionAndSize, alignment, chart);
if (animX._to !== point.x || animY._to !== point.y) {
me.xAlign = alignment.xAlign;
me.yAlign = alignment.yAlign;
me.width = size.width;
me.height = size.height;
me.caretX = position.x;
me.caretY = position.y;
me._resolveAnimations().update(me, point);
}
}
}
draw(ctx) {
const me = this;
const options = me.options.setContext(me.getContext());
let opacity = me.opacity;
if (!opacity) {
return;
}
me._updateAnimationTarget(options);
const tooltipSize = {
width: me.width,
height: me.height
};
const pt = {
x: me.x,
y: me.y
};
opacity = Math.abs(opacity) < 1e-3 ? 0 : opacity;
const padding = toPadding(options.padding);
const hasTooltipContent = me.title.length || me.beforeBody.length || me.body.length || me.afterBody.length || me.footer.length;
if (options.enabled && hasTooltipContent) {
ctx.save();
ctx.globalAlpha = opacity;
me.drawBackground(pt, ctx, tooltipSize, options);
overrideTextDirection(ctx, options.textDirection);
pt.y += padding.top;
me.drawTitle(pt, ctx, options);
me.drawBody(pt, ctx, options);
me.drawFooter(pt, ctx, options);
restoreTextDirection(ctx, options.textDirection);
ctx.restore();
}
}
getActiveElements() {
return this._active || [];
}
setActiveElements(activeElements, eventPosition) {
const me = this;
const lastActive = me._active;
const active = activeElements.map(({datasetIndex, index}) => {
const meta = me._chart.getDatasetMeta(datasetIndex);
if (!meta) {
throw new Error('Cannot find a dataset at index ' + datasetIndex);
}
return {
datasetIndex,
element: meta.data[index],
index,
};
});
const changed = !_elementsEqual(lastActive, active);
const positionChanged = me._positionChanged(active, eventPosition);
if (changed || positionChanged) {
me._active = active;
me._eventPosition = eventPosition;
me.update(true);
}
}
handleEvent(e, replay) {
const me = this;
const options = me.options;
const lastActive = me._active || [];
let changed = false;
let active = [];
if (e.type !== 'mouseout') {
active = me._chart.getElementsAtEventForMode(e, options.mode, options, replay);
if (options.reverse) {
active.reverse();
}
}
const positionChanged = me._positionChanged(active, e);
changed = replay || !_elementsEqual(active, lastActive) || positionChanged;
if (changed) {
me._active = active;
if (options.enabled || options.external) {
me._eventPosition = {
x: e.x,
y: e.y
};
me.update(true, replay);
}
}
return changed;
}
_positionChanged(active, e) {
const {caretX, caretY, options} = this;
const position = positioners[options.position].call(this, active, e);
return position !== false && (caretX !== position.x || caretY !== position.y);
}
}
Tooltip.positioners = positioners;
var plugin_tooltip = {
id: 'tooltip',
_element: Tooltip,
positioners,
afterInit(chart, _args, options) {
if (options) {
chart.tooltip = new Tooltip({_chart: chart, options});
}
},
beforeUpdate(chart, _args, options) {
if (chart.tooltip) {
chart.tooltip.initialize(options);
}
},
reset(chart, _args, options) {
if (chart.tooltip) {
chart.tooltip.initialize(options);
}
},
afterDraw(chart) {
const tooltip = chart.tooltip;
const args = {
tooltip
};
if (chart.notifyPlugins('beforeTooltipDraw', args) === false) {
return;
}
if (tooltip) {
tooltip.draw(chart.ctx);
}
chart.notifyPlugins('afterTooltipDraw', args);
},
afterEvent(chart, args) {
if (chart.tooltip) {
const useFinalPosition = args.replay;
if (chart.tooltip.handleEvent(args.event, useFinalPosition)) {
args.changed = true;
}
}
},
defaults: {
enabled: true,
external: null,
position: 'average',
backgroundColor: 'rgba(0,0,0,0.8)',
titleColor: '#fff',
titleFont: {
weight: 'bold',
},
titleSpacing: 2,
titleMarginBottom: 6,
titleAlign: 'left',
bodyColor: '#fff',
bodySpacing: 2,
bodyFont: {
},
bodyAlign: 'left',
footerColor: '#fff',
footerSpacing: 2,
footerMarginTop: 6,
footerFont: {
weight: 'bold',
},
footerAlign: 'left',
padding: 6,
caretPadding: 2,
caretSize: 5,
cornerRadius: 6,
boxHeight: (ctx, opts) => opts.bodyFont.size,
boxWidth: (ctx, opts) => opts.bodyFont.size,
multiKeyBackground: '#fff',
displayColors: true,
borderColor: 'rgba(0,0,0,0)',
borderWidth: 0,
animation: {
duration: 400,
easing: 'easeOutQuart',
},
animations: {
numbers: {
type: 'number',
properties: ['x', 'y', 'width', 'height', 'caretX', 'caretY'],
},
opacity: {
easing: 'linear',
duration: 200
}
},
callbacks: {
beforeTitle: noop,
title(tooltipItems) {
if (tooltipItems.length > 0) {
const item = tooltipItems[0];
const labels = item.chart.data.labels;
const labelCount = labels ? labels.length : 0;
if (this && this.options && this.options.mode === 'dataset') {
return item.dataset.label || '';
} else if (item.label) {
return item.label;
} else if (labelCount > 0 && item.dataIndex < labelCount) {
return labels[item.dataIndex];
}
}
return '';
},
afterTitle: noop,
beforeBody: noop,
beforeLabel: noop,
label(tooltipItem) {
if (this && this.options && this.options.mode === 'dataset') {
return tooltipItem.label + ': ' + tooltipItem.formattedValue || tooltipItem.formattedValue;
}
let label = tooltipItem.dataset.label || '';
if (label) {
label += ': ';
}
const value = tooltipItem.formattedValue;
if (!isNullOrUndef(value)) {
label += value;
}
return label;
},
labelColor(tooltipItem) {
const meta = tooltipItem.chart.getDatasetMeta(tooltipItem.datasetIndex);
const options = meta.controller.getStyle(tooltipItem.dataIndex);
return {
borderColor: options.borderColor,
backgroundColor: options.backgroundColor,
borderWidth: options.borderWidth,
borderDash: options.borderDash,
borderDashOffset: options.borderDashOffset,
borderRadius: 0,
};
},
labelTextColor() {
return this.options.bodyColor;
},
labelPointStyle(tooltipItem) {
const meta = tooltipItem.chart.getDatasetMeta(tooltipItem.datasetIndex);
const options = meta.controller.getStyle(tooltipItem.dataIndex);
return {
pointStyle: options.pointStyle,
rotation: options.rotation,
};
},
afterLabel: noop,
afterBody: noop,
beforeFooter: noop,
footer: noop,
afterFooter: noop
}
},
defaultRoutes: {
bodyFont: 'font',
footerFont: 'font',
titleFont: 'font'
},
descriptors: {
_scriptable: (name) => name !== 'filter' && name !== 'itemSort' && name !== 'external',
_indexable: false,
callbacks: {
_scriptable: false,
_indexable: false,
},
animation: {
_fallback: false
},
animations: {
_fallback: 'animation'
}
},
additionalOptionScopes: ['interaction']
};
var plugins = /*#__PURE__*/Object.freeze({
__proto__: null,
Decimation: plugin_decimation,
Filler: plugin_filler,
Legend: plugin_legend,
SubTitle: plugin_subtitle,
Title: plugin_title,
Tooltip: plugin_tooltip
});
const addIfString = (labels, raw, index) => typeof raw === 'string'
? labels.push(raw) - 1
: isNaN(raw) ? null : index;
function findOrAddLabel(labels, raw, index) {
const first = labels.indexOf(raw);
if (first === -1) {
return addIfString(labels, raw, index);
}
const last = labels.lastIndexOf(raw);
return first !== last ? index : first;
}
const validIndex = (index, max) => index === null ? null : _limitValue(Math.round(index), 0, max);
class CategoryScale extends Scale {
constructor(cfg) {
super(cfg);
this._startValue = undefined;
this._valueRange = 0;
}
parse(raw, index) {
if (isNullOrUndef(raw)) {
return null;
}
const labels = this.getLabels();
index = isFinite(index) && labels[index] === raw ? index
: findOrAddLabel(labels, raw, valueOrDefault(index, raw));
return validIndex(index, labels.length - 1);
}
determineDataLimits() {
const me = this;
const {minDefined, maxDefined} = me.getUserBounds();
let {min, max} = me.getMinMax(true);
if (me.options.bounds === 'ticks') {
if (!minDefined) {
min = 0;
}
if (!maxDefined) {
max = me.getLabels().length - 1;
}
}
me.min = min;
me.max = max;
}
buildTicks() {
const me = this;
const min = me.min;
const max = me.max;
const offset = me.options.offset;
const ticks = [];
let labels = me.getLabels();
labels = (min === 0 && max === labels.length - 1) ? labels : labels.slice(min, max + 1);
me._valueRange = Math.max(labels.length - (offset ? 0 : 1), 1);
me._startValue = me.min - (offset ? 0.5 : 0);
for (let value = min; value <= max; value++) {
ticks.push({value});
}
return ticks;
}
getLabelForValue(value) {
const me = this;
const labels = me.getLabels();
if (value >= 0 && value < labels.length) {
return labels[value];
}
return value;
}
configure() {
const me = this;
super.configure();
if (!me.isHorizontal()) {
me._reversePixels = !me._reversePixels;
}
}
getPixelForValue(value) {
const me = this;
if (typeof value !== 'number') {
value = me.parse(value);
}
return value === null ? NaN : me.getPixelForDecimal((value - me._startValue) / me._valueRange);
}
getPixelForTick(index) {
const me = this;
const ticks = me.ticks;
if (index < 0 || index > ticks.length - 1) {
return null;
}
return me.getPixelForValue(ticks[index].value);
}
getValueForPixel(pixel) {
const me = this;
return Math.round(me._startValue + me.getDecimalForPixel(pixel) * me._valueRange);
}
getBasePixel() {
return this.bottom;
}
}
CategoryScale.id = 'category';
CategoryScale.defaults = {
ticks: {
callback: CategoryScale.prototype.getLabelForValue
}
};
function generateTicks$1(generationOptions, dataRange) {
const ticks = [];
const MIN_SPACING = 1e-14;
const {bounds, step, min, max, precision, count, maxTicks, maxDigits, includeBounds} = generationOptions;
const unit = step || 1;
const maxSpaces = maxTicks - 1;
const {min: rmin, max: rmax} = dataRange;
const minDefined = !isNullOrUndef(min);
const maxDefined = !isNullOrUndef(max);
const countDefined = !isNullOrUndef(count);
const minSpacing = (rmax - rmin) / (maxDigits + 1);
let spacing = niceNum((rmax - rmin) / maxSpaces / unit) * unit;
let factor, niceMin, niceMax, numSpaces;
if (spacing < MIN_SPACING && !minDefined && !maxDefined) {
return [{value: rmin}, {value: rmax}];
}
numSpaces = Math.ceil(rmax / spacing) - Math.floor(rmin / spacing);
if (numSpaces > maxSpaces) {
spacing = niceNum(numSpaces * spacing / maxSpaces / unit) * unit;
}
if (!isNullOrUndef(precision)) {
factor = Math.pow(10, precision);
spacing = Math.ceil(spacing * factor) / factor;
}
if (bounds === 'ticks') {
niceMin = Math.floor(rmin / spacing) * spacing;
niceMax = Math.ceil(rmax / spacing) * spacing;
} else {
niceMin = rmin;
niceMax = rmax;
}
if (minDefined && maxDefined && step && almostWhole((max - min) / step, spacing / 1000)) {
numSpaces = Math.round(Math.min((max - min) / spacing, maxTicks));
spacing = (max - min) / numSpaces;
niceMin = min;
niceMax = max;
} else if (countDefined) {
niceMin = minDefined ? min : niceMin;
niceMax = maxDefined ? max : niceMax;
numSpaces = count - 1;
spacing = (niceMax - niceMin) / numSpaces;
} else {
numSpaces = (niceMax - niceMin) / spacing;
if (almostEquals(numSpaces, Math.round(numSpaces), spacing / 1000)) {
numSpaces = Math.round(numSpaces);
} else {
numSpaces = Math.ceil(numSpaces);
}
}
const decimalPlaces = Math.max(
_decimalPlaces(spacing),
_decimalPlaces(niceMin)
);
factor = Math.pow(10, isNullOrUndef(precision) ? decimalPlaces : precision);
niceMin = Math.round(niceMin * factor) / factor;
niceMax = Math.round(niceMax * factor) / factor;
let j = 0;
if (minDefined) {
if (includeBounds && niceMin !== min) {
ticks.push({value: min});
if (niceMin < min) {
j++;
}
if (almostEquals(Math.round((niceMin + j * spacing) * factor) / factor, min, relativeLabelSize(min, minSpacing, generationOptions))) {
j++;
}
} else if (niceMin < min) {
j++;
}
}
for (; j < numSpaces; ++j) {
ticks.push({value: Math.round((niceMin + j * spacing) * factor) / factor});
}
if (maxDefined && includeBounds && niceMax !== max) {
if (almostEquals(ticks[ticks.length - 1].value, max, relativeLabelSize(max, minSpacing, generationOptions))) {
ticks[ticks.length - 1].value = max;
} else {
ticks.push({value: max});
}
} else if (!maxDefined || niceMax === max) {
ticks.push({value: niceMax});
}
return ticks;
}
function relativeLabelSize(value, minSpacing, {horizontal, minRotation}) {
const rad = toRadians(minRotation);
const ratio = (horizontal ? Math.sin(rad) : Math.cos(rad)) || 0.001;
const length = 0.75 * minSpacing * ('' + value).length;
return Math.min(minSpacing / ratio, length);
}
class LinearScaleBase extends Scale {
constructor(cfg) {
super(cfg);
this.start = undefined;
this.end = undefined;
this._startValue = undefined;
this._endValue = undefined;
this._valueRange = 0;
}
parse(raw, index) {
if (isNullOrUndef(raw)) {
return null;
}
if ((typeof raw === 'number' || raw instanceof Number) && !isFinite(+raw)) {
return null;
}
return +raw;
}
handleTickRangeOptions() {
const me = this;
const {beginAtZero} = me.options;
const {minDefined, maxDefined} = me.getUserBounds();
let {min, max} = me;
const setMin = v => (min = minDefined ? min : v);
const setMax = v => (max = maxDefined ? max : v);
if (beginAtZero) {
const minSign = sign(min);
const maxSign = sign(max);
if (minSign < 0 && maxSign < 0) {
setMax(0);
} else if (minSign > 0 && maxSign > 0) {
setMin(0);
}
}
if (min === max) {
let offset = 1;
if (max >= Number.MAX_SAFE_INTEGER || min <= Number.MIN_SAFE_INTEGER) {
offset = Math.abs(max * 0.05);
}
setMax(max + offset);
if (!beginAtZero) {
setMin(min - offset);
}
}
me.min = min;
me.max = max;
}
getTickLimit() {
const me = this;
const tickOpts = me.options.ticks;
let {maxTicksLimit, stepSize} = tickOpts;
let 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() {
return Number.POSITIVE_INFINITY;
}
buildTicks() {
const me = this;
const opts = me.options;
const tickOpts = opts.ticks;
let maxTicks = me.getTickLimit();
maxTicks = Math.max(2, maxTicks);
const numericGeneratorOptions = {
maxTicks,
bounds: opts.bounds,
min: opts.min,
max: opts.max,
precision: tickOpts.precision,
step: tickOpts.stepSize,
count: tickOpts.count,
maxDigits: me._maxDigits(),
horizontal: me.isHorizontal(),
minRotation: tickOpts.minRotation || 0,
includeBounds: tickOpts.includeBounds !== false
};
const dataRange = me._range || me;
const ticks = generateTicks$1(numericGeneratorOptions, dataRange);
if (opts.bounds === 'ticks') {
_setMinAndMaxByKey(ticks, me, 'value');
}
if (opts.reverse) {
ticks.reverse();
me.start = me.max;
me.end = me.min;
} else {
me.start = me.min;
me.end = me.max;
}
return ticks;
}
configure() {
const me = this;
const ticks = me.ticks;
let start = me.min;
let end = me.max;
super.configure();
if (me.options.offset && ticks.length) {
const offset = (end - start) / Math.max(ticks.length - 1, 1) / 2;
start -= offset;
end += offset;
}
me._startValue = start;
me._endValue = end;
me._valueRange = end - start;
}
getLabelForValue(value) {
return formatNumber(value, this.chart.options.locale);
}
}
class LinearScale extends LinearScaleBase {
determineDataLimits() {
const me = this;
const {min, max} = me.getMinMax(true);
me.min = isNumberFinite(min) ? min : 0;
me.max = isNumberFinite(max) ? max : 1;
me.handleTickRangeOptions();
}
computeTickLimit() {
const me = this;
const horizontal = me.isHorizontal();
const length = horizontal ? me.width : me.height;
const minRotation = toRadians(me.options.ticks.minRotation);
const ratio = (horizontal ? Math.sin(minRotation) : Math.cos(minRotation)) || 0.001;
const tickFont = me._resolveTickFontOptions(0);
return Math.ceil(length / Math.min(40, tickFont.lineHeight / ratio));
}
getPixelForValue(value) {
return value === null ? NaN : this.getPixelForDecimal((value - this._startValue) / this._valueRange);
}
getValueForPixel(pixel) {
return this._startValue + this.getDecimalForPixel(pixel) * this._valueRange;
}
}
LinearScale.id = 'linear';
LinearScale.defaults = {
ticks: {
callback: Ticks.formatters.numeric
}
};
function isMajor(tickVal) {
const remain = tickVal / (Math.pow(10, Math.floor(log10(tickVal))));
return remain === 1;
}
function generateTicks(generationOptions, dataRange) {
const endExp = Math.floor(log10(dataRange.max));
const endSignificand = Math.ceil(dataRange.max / Math.pow(10, endExp));
const ticks = [];
let tickVal = finiteOrDefault(generationOptions.min, Math.pow(10, Math.floor(log10(dataRange.min))));
let exp = Math.floor(log10(tickVal));
let significand = Math.floor(tickVal / Math.pow(10, exp));
let precision = exp < 0 ? Math.pow(10, Math.abs(exp)) : 1;
do {
ticks.push({value: tickVal, major: isMajor(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));
const lastTick = finiteOrDefault(generationOptions.max, tickVal);
ticks.push({value: lastTick, major: isMajor(tickVal)});
return ticks;
}
class LogarithmicScale extends Scale {
constructor(cfg) {
super(cfg);
this.start = undefined;
this.end = undefined;
this._startValue = undefined;
this._valueRange = 0;
}
parse(raw, index) {
const value = LinearScaleBase.prototype.parse.apply(this, [raw, index]);
if (value === 0) {
this._zero = true;
return undefined;
}
return isNumberFinite(value) && value > 0 ? value : null;
}
determineDataLimits() {
const me = this;
const {min, max} = me.getMinMax(true);
me.min = isNumberFinite(min) ? Math.max(0, min) : null;
me.max = isNumberFinite(max) ? Math.max(0, max) : null;
if (me.options.beginAtZero) {
me._zero = true;
}
me.handleTickRangeOptions();
}
handleTickRangeOptions() {
const me = this;
const {minDefined, maxDefined} = me.getUserBounds();
let min = me.min;
let max = me.max;
const setMin = v => (min = minDefined ? min : v);
const setMax = v => (max = maxDefined ? max : v);
const exp = (v, m) => Math.pow(10, Math.floor(log10(v)) + m);
if (min === max) {
if (min <= 0) {
setMin(1);
setMax(10);
} else {
setMin(exp(min, -1));
setMax(exp(max, +1));
}
}
if (min <= 0) {
setMin(exp(max, -1));
}
if (max <= 0) {
setMax(exp(min, +1));
}
if (me._zero && me.min !== me._suggestedMin && min === exp(me.min, 0)) {
setMin(exp(min, -1));
}
me.min = min;
me.max = max;
}
buildTicks() {
const me = this;
const opts = me.options;
const generationOptions = {
min: me._userMin,
max: me._userMax
};
const ticks = generateTicks(generationOptions, me);
if (opts.bounds === 'ticks') {
_setMinAndMaxByKey(ticks, me, 'value');
}
if (opts.reverse) {
ticks.reverse();
me.start = me.max;
me.end = me.min;
} else {
me.start = me.min;
me.end = me.max;
}
return ticks;
}
getLabelForValue(value) {
return value === undefined ? '0' : formatNumber(value, this.chart.options.locale);
}
configure() {
const me = this;
const start = me.min;
super.configure();
me._startValue = log10(start);
me._valueRange = log10(me.max) - log10(start);
}
getPixelForValue(value) {
const me = this;
if (value === undefined || value === 0) {
value = me.min;
}
if (value === null || isNaN(value)) {
return NaN;
}
return me.getPixelForDecimal(value === me.min
? 0
: (log10(value) - me._startValue) / me._valueRange);
}
getValueForPixel(pixel) {
const me = this;
const decimal = me.getDecimalForPixel(pixel);
return Math.pow(10, me._startValue + decimal * me._valueRange);
}
}
LogarithmicScale.id = 'logarithmic';
LogarithmicScale.defaults = {
ticks: {
callback: Ticks.formatters.logarithmic,
major: {
enabled: true
}
}
};
function getTickBackdropHeight(opts) {
const tickOpts = opts.ticks;
if (tickOpts.display && opts.display) {
const padding = toPadding(tickOpts.backdropPadding);
return valueOrDefault(tickOpts.font && tickOpts.font.size, defaults.font.size) + padding.height;
}
return 0;
}
function measureLabelSize(ctx, font, label) {
label = isArray(label) ? label : [label];
return {
w: _longestText(ctx, font.string, label),
h: label.length * font.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
};
}
function fitWithPointLabels(scale) {
const furthestLimits = {
l: 0,
r: scale.width,
t: 0,
b: scale.height - scale.paddingTop
};
const furthestAngles = {};
const labelSizes = [];
const padding = [];
const valueCount = scale.getLabels().length;
for (let i = 0; i < valueCount; i++) {
const opts = scale.options.pointLabels.setContext(scale.getPointLabelContext(i));
padding[i] = opts.padding;
const pointPosition = scale.getPointPosition(i, scale.drawingArea + padding[i]);
const plFont = toFont(opts.font);
const textSize = measureLabelSize(scale.ctx, plFont, scale._pointLabels[i]);
labelSizes[i] = textSize;
const angleRadians = scale.getIndexAngle(i);
const angle = toDegrees(angleRadians);
const hLimits = determineLimits(angle, pointPosition.x, textSize.w, 0, 180);
const 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);
scale._pointLabelItems = buildPointLabelItems(scale, labelSizes, padding);
}
function buildPointLabelItems(scale, labelSizes, padding) {
const items = [];
const valueCount = scale.getLabels().length;
const opts = scale.options;
const tickBackdropHeight = getTickBackdropHeight(opts);
const outerDistance = scale.getDistanceFromCenterForValue(opts.ticks.reverse ? scale.min : scale.max);
for (let i = 0; i < valueCount; i++) {
const extra = (i === 0 ? tickBackdropHeight / 2 : 0);
const pointLabelPosition = scale.getPointPosition(i, outerDistance + extra + padding[i]);
const angle = toDegrees(scale.getIndexAngle(i));
const size = labelSizes[i];
const y = yForAngle(pointLabelPosition.y, size.h, angle);
const textAlign = getTextAlignForAngle(angle);
const left = leftForTextAlign(pointLabelPosition.x, size.w, textAlign);
items.push({
x: pointLabelPosition.x,
y,
textAlign,
left,
top: y,
right: left + size.w,
bottom: y + size.h
});
}
return items;
}
function getTextAlignForAngle(angle) {
if (angle === 0 || angle === 180) {
return 'center';
} else if (angle < 180) {
return 'left';
}
return 'right';
}
function leftForTextAlign(x, w, align) {
if (align === 'right') {
x -= w;
} else if (align === 'center') {
x -= (w / 2);
}
return x;
}
function yForAngle(y, h, angle) {
if (angle === 90 || angle === 270) {
y -= (h / 2);
} else if (angle > 270 || angle < 90) {
y -= h;
}
return y;
}
function drawPointLabels(scale, labelCount) {
const {ctx, options: {pointLabels}} = scale;
for (let i = labelCount - 1; i >= 0; i--) {
const optsAtIndex = pointLabels.setContext(scale.getPointLabelContext(i));
const plFont = toFont(optsAtIndex.font);
const {x, y, textAlign, left, top, right, bottom} = scale._pointLabelItems[i];
const {backdropColor} = optsAtIndex;
if (!isNullOrUndef(backdropColor)) {
const padding = toPadding(optsAtIndex.backdropPadding);
ctx.fillStyle = backdropColor;
ctx.fillRect(left - padding.left, top - padding.top, right - left + padding.width, bottom - top + padding.height);
}
renderText(
ctx,
scale._pointLabels[i],
x,
y + (plFont.lineHeight / 2),
plFont,
{
color: optsAtIndex.color,
textAlign: textAlign,
textBaseline: 'middle'
}
);
}
}
function pathRadiusLine(scale, radius, circular, labelCount) {
const {ctx} = scale;
if (circular) {
ctx.arc(scale.xCenter, scale.yCenter, radius, 0, TAU);
} else {
let pointPosition = scale.getPointPosition(0, radius);
ctx.moveTo(pointPosition.x, pointPosition.y);
for (let i = 1; i < labelCount; i++) {
pointPosition = scale.getPointPosition(i, radius);
ctx.lineTo(pointPosition.x, pointPosition.y);
}
}
}
function drawRadiusLine(scale, gridLineOpts, radius, labelCount) {
const ctx = scale.ctx;
const circular = gridLineOpts.circular;
const {color, lineWidth} = gridLineOpts;
if ((!circular && !labelCount) || !color || !lineWidth || radius < 0) {
return;
}
ctx.save();
ctx.strokeStyle = color;
ctx.lineWidth = lineWidth;
ctx.setLineDash(gridLineOpts.borderDash);
ctx.lineDashOffset = gridLineOpts.borderDashOffset;
ctx.beginPath();
pathRadiusLine(scale, radius, circular, labelCount);
ctx.closePath();
ctx.stroke();
ctx.restore();
}
function numberOrZero(param) {
return isNumber(param) ? param : 0;
}
function createPointLabelContext(parent, index, label) {
return Object.assign(Object.create(parent), {
label,
index,
type: 'pointLabel'
});
}
class RadialLinearScale extends LinearScaleBase {
constructor(cfg) {
super(cfg);
this.xCenter = undefined;
this.yCenter = undefined;
this.drawingArea = undefined;
this._pointLabels = [];
this._pointLabelItems = [];
}
setDimensions() {
const me = this;
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() {
const me = this;
const {min, max} = me.getMinMax(false);
me.min = isNumberFinite(min) && !isNaN(min) ? min : 0;
me.max = isNumberFinite(max) && !isNaN(max) ? max : 0;
me.handleTickRangeOptions();
}
computeTickLimit() {
return Math.ceil(this.drawingArea / getTickBackdropHeight(this.options));
}
generateTickLabels(ticks) {
const me = this;
LinearScaleBase.prototype.generateTickLabels.call(me, ticks);
me._pointLabels = me.getLabels().map((value, index) => {
const label = callback(me.options.pointLabels.callback, [value, index], me);
return label || label === 0 ? label : '';
});
}
fit() {
const me = this;
const opts = me.options;
if (opts.display && opts.pointLabels.display) {
fitWithPointLabels(me);
} else {
me.setCenterPoint(0, 0, 0, 0);
}
}
_setReductions(largestPossibleRadius, furthestLimits, furthestAngles) {
const me = this;
let radiusReductionLeft = furthestLimits.l / Math.sin(furthestAngles.l);
let radiusReductionRight = Math.max(furthestLimits.r - me.width, 0) / Math.sin(furthestAngles.r);
let radiusReductionTop = -furthestLimits.t / Math.cos(furthestAngles.t);
let 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.max(largestPossibleRadius / 2, Math.min(
Math.floor(largestPossibleRadius - (radiusReductionLeft + radiusReductionRight) / 2),
Math.floor(largestPossibleRadius - (radiusReductionTop + radiusReductionBottom) / 2)));
me.setCenterPoint(radiusReductionLeft, radiusReductionRight, radiusReductionTop, radiusReductionBottom);
}
setCenterPoint(leftMovement, rightMovement, topMovement, bottomMovement) {
const me = this;
const maxRight = me.width - rightMovement - me.drawingArea;
const maxLeft = leftMovement + me.drawingArea;
const maxTop = topMovement + me.drawingArea;
const 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(index) {
const angleMultiplier = TAU / this.getLabels().length;
const startAngle = this.options.startAngle || 0;
return _normalizeAngle(index * angleMultiplier + toRadians(startAngle));
}
getDistanceFromCenterForValue(value) {
const me = this;
if (isNullOrUndef(value)) {
return NaN;
}
const scalingFactor = me.drawingArea / (me.max - me.min);
if (me.options.reverse) {
return (me.max - value) * scalingFactor;
}
return (value - me.min) * scalingFactor;
}
getValueForDistanceFromCenter(distance) {
if (isNullOrUndef(distance)) {
return NaN;
}
const me = this;
const scaledDistance = distance / (me.drawingArea / (me.max - me.min));
return me.options.reverse ? me.max - scaledDistance : me.min + scaledDistance;
}
getPointLabelContext(index) {
const me = this;
const pointLabels = me._pointLabels || [];
if (index >= 0 && index < pointLabels.length) {
const pointLabel = pointLabels[index];
return createPointLabelContext(me.getContext(), index, pointLabel);
}
}
getPointPosition(index, distanceFromCenter) {
const me = this;
const angle = me.getIndexAngle(index) - HALF_PI;
return {
x: Math.cos(angle) * distanceFromCenter + me.xCenter,
y: Math.sin(angle) * distanceFromCenter + me.yCenter,
angle
};
}
getPointPositionForValue(index, value) {
return this.getPointPosition(index, this.getDistanceFromCenterForValue(value));
}
getBasePosition(index) {
return this.getPointPositionForValue(index || 0, this.getBaseValue());
}
getPointLabelPosition(index) {
const {left, top, right, bottom} = this._pointLabelItems[index];
return {
left,
top,
right,
bottom,
};
}
drawBackground() {
const me = this;
const {backgroundColor, grid: {circular}} = me.options;
if (backgroundColor) {
const ctx = me.ctx;
ctx.save();
ctx.beginPath();
pathRadiusLine(me, me.getDistanceFromCenterForValue(me._endValue), circular, me.getLabels().length);
ctx.closePath();
ctx.fillStyle = backgroundColor;
ctx.fill();
ctx.restore();
}
}
drawGrid() {
const me = this;
const ctx = me.ctx;
const opts = me.options;
const {angleLines, grid} = opts;
const labelCount = me.getLabels().length;
let i, offset, position;
if (opts.pointLabels.display) {
drawPointLabels(me, labelCount);
}
if (grid.display) {
me.ticks.forEach((tick, index) => {
if (index !== 0) {
offset = me.getDistanceFromCenterForValue(tick.value);
const optsAtIndex = grid.setContext(me.getContext(index - 1));
drawRadiusLine(me, optsAtIndex, offset, labelCount);
}
});
}
if (angleLines.display) {
ctx.save();
for (i = me.getLabels().length - 1; i >= 0; i--) {
const optsAtIndex = angleLines.setContext(me.getPointLabelContext(i));
const {color, lineWidth} = optsAtIndex;
if (!lineWidth || !color) {
continue;
}
ctx.lineWidth = lineWidth;
ctx.strokeStyle = color;
ctx.setLineDash(optsAtIndex.borderDash);
ctx.lineDashOffset = optsAtIndex.borderDashOffset;
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();
}
}
drawBorder() {}
drawLabels() {
const me = this;
const ctx = me.ctx;
const opts = me.options;
const tickOpts = opts.ticks;
if (!tickOpts.display) {
return;
}
const startAngle = me.getIndexAngle(0);
let offset, width;
ctx.save();
ctx.translate(me.xCenter, me.yCenter);
ctx.rotate(startAngle);
ctx.textAlign = 'center';
ctx.textBaseline = 'middle';
me.ticks.forEach((tick, index) => {
if (index === 0 && !opts.reverse) {
return;
}
const optsAtIndex = tickOpts.setContext(me.getContext(index));
const tickFont = toFont(optsAtIndex.font);
offset = me.getDistanceFromCenterForValue(me.ticks[index].value);
if (optsAtIndex.showLabelBackdrop) {
ctx.font = tickFont.string;
width = ctx.measureText(tick.label).width;
ctx.fillStyle = optsAtIndex.backdropColor;
const padding = toPadding(optsAtIndex.backdropPadding);
ctx.fillRect(
-width / 2 - padding.left,
-offset - tickFont.size / 2 - padding.top,
width + padding.width,
tickFont.size + padding.height
);
}
renderText(ctx, tick.label, 0, -offset, tickFont, {
color: optsAtIndex.color,
});
});
ctx.restore();
}
drawTitle() {}
}
RadialLinearScale.id = 'radialLinear';
RadialLinearScale.defaults = {
display: true,
animate: true,
position: 'chartArea',
angleLines: {
display: true,
lineWidth: 1,
borderDash: [],
borderDashOffset: 0.0
},
grid: {
circular: false
},
startAngle: 0,
ticks: {
showLabelBackdrop: true,
callback: Ticks.formatters.numeric
},
pointLabels: {
backdropColor: undefined,
backdropPadding: 2,
display: true,
font: {
size: 10
},
callback(label) {
return label;
},
padding: 5
}
};
RadialLinearScale.defaultRoutes = {
'angleLines.color': 'borderColor',
'pointLabels.color': 'color',
'ticks.color': 'color'
};
RadialLinearScale.descriptors = {
angleLines: {
_fallback: 'grid'
}
};
const 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}
};
const UNITS = (Object.keys(INTERVALS));
function sorter(a, b) {
return a - b;
}
function parse(scale, input) {
if (isNullOrUndef(input)) {
return null;
}
const adapter = scale._adapter;
const {parser, round, isoWeekday} = scale._parseOpts;
let value = input;
if (typeof parser === 'function') {
value = parser(value);
}
if (!isNumberFinite(value)) {
value = typeof parser === 'string'
? adapter.parse(value, parser)
: adapter.parse(value);
}
if (value === null) {
return null;
}
if (round) {
value = round === 'week' && (isNumber(isoWeekday) || isoWeekday === true)
? adapter.startOf(value, 'isoWeek', isoWeekday)
: adapter.startOf(value, round);
}
return +value;
}
function determineUnitForAutoTicks(minUnit, min, max, capacity) {
const ilen = UNITS.length;
for (let i = UNITS.indexOf(minUnit); i < ilen - 1; ++i) {
const interval = INTERVALS[UNITS[i]];
const factor = interval.steps ? interval.steps : Number.MAX_SAFE_INTEGER;
if (interval.common && Math.ceil((max - min) / (factor * interval.size)) <= capacity) {
return UNITS[i];
}
}
return UNITS[ilen - 1];
}
function determineUnitForFormatting(scale, numTicks, minUnit, min, max) {
for (let i = UNITS.length - 1; i >= UNITS.indexOf(minUnit); i--) {
const 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 (let i = UNITS.indexOf(unit) + 1, ilen = UNITS.length; i < ilen; ++i) {
if (INTERVALS[UNITS[i]].common) {
return UNITS[i];
}
}
}
function addTick(ticks, time, timestamps) {
if (!timestamps) {
ticks[time] = true;
} else if (timestamps.length) {
const {lo, hi} = _lookup(timestamps, time);
const timestamp = timestamps[lo] >= time ? timestamps[lo] : timestamps[hi];
ticks[timestamp] = true;
}
}
function setMajorTicks(scale, ticks, map, majorUnit) {
const adapter = scale._adapter;
const first = +adapter.startOf(ticks[0].value, majorUnit);
const last = ticks[ticks.length - 1].value;
let 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) {
const ticks = [];
const map = {};
const ilen = values.length;
let i, value;
for (i = 0; i < ilen; ++i) {
value = values[i];
map[value] = i;
ticks.push({
value,
major: false
});
}
return (ilen === 0 || !majorUnit) ? ticks : setMajorTicks(scale, ticks, map, majorUnit);
}
class TimeScale extends Scale {
constructor(props) {
super(props);
this._cache = {
data: [],
labels: [],
all: []
};
this._unit = 'day';
this._majorUnit = undefined;
this._offsets = {};
this._normalized = false;
this._parseOpts = undefined;
}
init(scaleOpts, opts) {
const time = scaleOpts.time || (scaleOpts.time = {});
const adapter = this._adapter = new _adapters._date(scaleOpts.adapters.date);
mergeIf(time.displayFormats, adapter.formats());
this._parseOpts = {
parser: time.parser,
round: time.round,
isoWeekday: time.isoWeekday
};
super.init(scaleOpts);
this._normalized = opts.normalized;
}
parse(raw, index) {
if (raw === undefined) {
return null;
}
return parse(this, raw);
}
beforeLayout() {
super.beforeLayout();
this._cache = {
data: [],
labels: [],
all: []
};
}
determineDataLimits() {
const me = this;
const options = me.options;
const adapter = me._adapter;
const unit = options.time.unit || 'day';
let {min, max, minDefined, maxDefined} = me.getUserBounds();
function _applyBounds(bounds) {
if (!minDefined && !isNaN(bounds.min)) {
min = Math.min(min, bounds.min);
}
if (!maxDefined && !isNaN(bounds.max)) {
max = Math.max(max, bounds.max);
}
}
if (!minDefined || !maxDefined) {
_applyBounds(me._getLabelBounds());
if (options.bounds !== 'ticks' || options.ticks.source !== 'labels') {
_applyBounds(me.getMinMax(false));
}
}
min = isNumberFinite(min) && !isNaN(min) ? min : +adapter.startOf(Date.now(), unit);
max = isNumberFinite(max) && !isNaN(max) ? max : +adapter.endOf(Date.now(), unit) + 1;
me.min = Math.min(min, max - 1);
me.max = Math.max(min + 1, max);
}
_getLabelBounds() {
const arr = this.getLabelTimestamps();
let min = Number.POSITIVE_INFINITY;
let max = Number.NEGATIVE_INFINITY;
if (arr.length) {
min = arr[0];
max = arr[arr.length - 1];
}
return {min, max};
}
buildTicks() {
const me = this;
const options = me.options;
const timeOpts = options.time;
const tickOpts = options.ticks;
const timestamps = tickOpts.source === 'labels' ? me.getLabelTimestamps() : me._generate();
if (options.bounds === 'ticks' && timestamps.length) {
me.min = me._userMin || timestamps[0];
me.max = me._userMax || timestamps[timestamps.length - 1];
}
const min = me.min;
const max = me.max;
const ticks = _filterBetween(timestamps, min, max);
me._unit = timeOpts.unit || (tickOpts.autoSkip
? determineUnitForAutoTicks(timeOpts.minUnit, me.min, me.max, me._getLabelCapacity(min))
: determineUnitForFormatting(me, ticks.length, timeOpts.minUnit, me.min, me.max));
me._majorUnit = !tickOpts.major.enabled || me._unit === 'year' ? undefined
: determineMajorUnit(me._unit);
me.initOffsets(timestamps);
if (options.reverse) {
ticks.reverse();
}
return ticksFromTimestamps(me, ticks, me._majorUnit);
}
initOffsets(timestamps) {
const me = this;
let start = 0;
let end = 0;
let first, last;
if (me.options.offset && timestamps.length) {
first = me.getDecimalForValue(timestamps[0]);
if (timestamps.length === 1) {
start = 1 - first;
} else {
start = (me.getDecimalForValue(timestamps[1]) - first) / 2;
}
last = me.getDecimalForValue(timestamps[timestamps.length - 1]);
if (timestamps.length === 1) {
end = last;
} else {
end = (last - me.getDecimalForValue(timestamps[timestamps.length - 2])) / 2;
}
}
const limit = timestamps.length < 3 ? 0.5 : 0.25;
start = _limitValue(start, 0, limit);
end = _limitValue(end, 0, limit);
me._offsets = {start, end, factor: 1 / (start + 1 + end)};
}
_generate() {
const me = this;
const adapter = me._adapter;
const min = me.min;
const max = me.max;
const options = me.options;
const timeOpts = options.time;
const minor = timeOpts.unit || determineUnitForAutoTicks(timeOpts.minUnit, min, max, me._getLabelCapacity(min));
const stepSize = valueOrDefault(timeOpts.stepSize, 1);
const weekday = minor === 'week' ? timeOpts.isoWeekday : false;
const hasWeekday = isNumber(weekday) || weekday === true;
const ticks = {};
let first = min;
let time, count;
if (hasWeekday) {
first = +adapter.startOf(first, 'isoWeek', weekday);
}
first = +adapter.startOf(first, hasWeekday ? 'day' : minor);
if (adapter.diff(max, min, minor) > 100000 * stepSize) {
throw new Error(min + ' and ' + max + ' are too far apart with stepSize of ' + stepSize + ' ' + minor);
}
const timestamps = options.ticks.source === 'data' && me.getDataTimestamps();
for (time = first, count = 0; time < max; time = +adapter.add(time, stepSize, minor), count++) {
addTick(ticks, time, timestamps);
}
if (time === max || options.bounds === 'ticks' || count === 1) {
addTick(ticks, time, timestamps);
}
return Object.keys(ticks).sort((a, b) => a - b).map(x => +x);
}
getLabelForValue(value) {
const me = this;
const adapter = me._adapter;
const timeOpts = me.options.time;
if (timeOpts.tooltipFormat) {
return adapter.format(value, timeOpts.tooltipFormat);
}
return adapter.format(value, timeOpts.displayFormats.datetime);
}
_tickFormatFunction(time, index, ticks, format) {
const me = this;
const options = me.options;
const formats = options.time.displayFormats;
const unit = me._unit;
const majorUnit = me._majorUnit;
const minorFormat = unit && formats[unit];
const majorFormat = majorUnit && formats[majorUnit];
const tick = ticks[index];
const major = majorUnit && majorFormat && tick && tick.major;
const label = me._adapter.format(time, format || (major ? majorFormat : minorFormat));
const formatter = options.ticks.callback;
return formatter ? callback(formatter, [label, index, ticks], me) : label;
}
generateTickLabels(ticks) {
let i, ilen, tick;
for (i = 0, ilen = ticks.length; i < ilen; ++i) {
tick = ticks[i];
tick.label = this._tickFormatFunction(tick.value, i, ticks);
}
}
getDecimalForValue(value) {
const me = this;
return value === null ? NaN : (value - me.min) / (me.max - me.min);
}
getPixelForValue(value) {
const me = this;
const offsets = me._offsets;
const pos = me.getDecimalForValue(value);
return me.getPixelForDecimal((offsets.start + pos) * offsets.factor);
}
getValueForPixel(pixel) {
const me = this;
const offsets = me._offsets;
const pos = me.getDecimalForPixel(pixel) / offsets.factor - offsets.end;
return me.min + pos * (me.max - me.min);
}
_getLabelSize(label) {
const me = this;
const ticksOpts = me.options.ticks;
const tickLabelWidth = me.ctx.measureText(label).width;
const angle = toRadians(me.isHorizontal() ? ticksOpts.maxRotation : ticksOpts.minRotation);
const cosRotation = Math.cos(angle);
const sinRotation = Math.sin(angle);
const tickFontSize = me._resolveTickFontOptions(0).size;
return {
w: (tickLabelWidth * cosRotation) + (tickFontSize * sinRotation),
h: (tickLabelWidth * sinRotation) + (tickFontSize * cosRotation)
};
}
_getLabelCapacity(exampleTime) {
const me = this;
const timeOpts = me.options.time;
const displayFormats = timeOpts.displayFormats;
const format = displayFormats[timeOpts.unit] || displayFormats.millisecond;
const exampleLabel = me._tickFormatFunction(exampleTime, 0, ticksFromTimestamps(me, [exampleTime], me._majorUnit), format);
const size = me._getLabelSize(exampleLabel);
const capacity = Math.floor(me.isHorizontal() ? me.width / size.w : me.height / size.h) - 1;
return capacity > 0 ? capacity : 1;
}
getDataTimestamps() {
const me = this;
let timestamps = me._cache.data || [];
let i, ilen;
if (timestamps.length) {
return timestamps;
}
const metas = me.getMatchingVisibleMetas();
if (me._normalized && metas.length) {
return (me._cache.data = metas[0].controller.getAllParsedValues(me));
}
for (i = 0, ilen = metas.length; i < ilen; ++i) {
timestamps = timestamps.concat(metas[i].controller.getAllParsedValues(me));
}
return (me._cache.data = me.normalize(timestamps));
}
getLabelTimestamps() {
const me = this;
const timestamps = me._cache.labels || [];
let i, ilen;
if (timestamps.length) {
return timestamps;
}
const labels = me.getLabels();
for (i = 0, ilen = labels.length; i < ilen; ++i) {
timestamps.push(parse(me, labels[i]));
}
return (me._cache.labels = me._normalized ? timestamps : me.normalize(timestamps));
}
normalize(values) {
return _arrayUnique(values.sort(sorter));
}
}
TimeScale.id = 'time';
TimeScale.defaults = {
bounds: 'data',
adapters: {},
time: {
parser: false,
unit: false,
round: false,
isoWeekday: false,
minUnit: 'millisecond',
displayFormats: {}
},
ticks: {
source: 'auto',
major: {
enabled: false
}
}
};
function interpolate(table, val, reverse) {
let lo = 0;
let hi = table.length - 1;
let prevSource, nextSource, prevTarget, nextTarget;
if (reverse) {
if (val >= table[lo].pos && val <= table[hi].pos) {
({lo, hi} = _lookupByKey(table, 'pos', val));
}
({pos: prevSource, time: prevTarget} = table[lo]);
({pos: nextSource, time: nextTarget} = table[hi]);
} else {
if (val >= table[lo].time && val <= table[hi].time) {
({lo, hi} = _lookupByKey(table, 'time', val));
}
({time: prevSource, pos: prevTarget} = table[lo]);
({time: nextSource, pos: nextTarget} = table[hi]);
}
const span = nextSource - prevSource;
return span ? prevTarget + (nextTarget - prevTarget) * (val - prevSource) / span : prevTarget;
}
class TimeSeriesScale extends TimeScale {
constructor(props) {
super(props);
this._table = [];
this._minPos = undefined;
this._tableRange = undefined;
}
initOffsets() {
const me = this;
const timestamps = me._getTimestampsForTable();
const table = me._table = me.buildLookupTable(timestamps);
me._minPos = interpolate(table, me.min);
me._tableRange = interpolate(table, me.max) - me._minPos;
super.initOffsets(timestamps);
}
buildLookupTable(timestamps) {
const {min, max} = this;
const items = [];
const table = [];
let 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);
}
}
if (items.length < 2) {
return [
{time: min, pos: 0},
{time: max, pos: 1}
];
}
for (i = 0, ilen = items.length; i < ilen; ++i) {
next = items[i + 1];
prev = items[i - 1];
curr = items[i];
if (Math.round((next + prev) / 2) !== curr) {
table.push({time: curr, pos: i / (ilen - 1)});
}
}
return table;
}
_getTimestampsForTable() {
const me = this;
let timestamps = me._cache.all || [];
if (timestamps.length) {
return timestamps;
}
const data = me.getDataTimestamps();
const label = me.getLabelTimestamps();
if (data.length && label.length) {
timestamps = me.normalize(data.concat(label));
} else {
timestamps = data.length ? data : label;
}
timestamps = me._cache.all = timestamps;
return timestamps;
}
getDecimalForValue(value) {
return (interpolate(this._table, value) - this._minPos) / this._tableRange;
}
getValueForPixel(pixel) {
const me = this;
const offsets = me._offsets;
const decimal = me.getDecimalForPixel(pixel) / offsets.factor - offsets.end;
return interpolate(me._table, decimal * me._tableRange + me._minPos, true);
}
}
TimeSeriesScale.id = 'timeseries';
TimeSeriesScale.defaults = TimeScale.defaults;
var scales = /*#__PURE__*/Object.freeze({
__proto__: null,
CategoryScale: CategoryScale,
LinearScale: LinearScale,
LogarithmicScale: LogarithmicScale,
RadialLinearScale: RadialLinearScale,
TimeScale: TimeScale,
TimeSeriesScale: TimeSeriesScale
});
Chart.register(controllers, scales, elements, plugins);
Chart.helpers = {...helpers};
Chart._adapters = _adapters;
Chart.Animation = Animation;
Chart.Animations = Animations;
Chart.animator = animator;
Chart.controllers = registry.controllers.items;
Chart.DatasetController = DatasetController;
Chart.Element = Element;
Chart.elements = elements;
Chart.Interaction = Interaction;
Chart.layouts = layouts;
Chart.platforms = platforms;
Chart.Scale = Scale;
Chart.Ticks = Ticks;
Object.assign(Chart, controllers, scales, elements, plugins, platforms);
Chart.Chart = Chart;
if (typeof window !== 'undefined') {
window.Chart = Chart;
}
return Chart;
})));
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