/*!
* Chart.js v4.4.2
* https://www.chartjs.org
* (c) 2024 Chart.js Contributors
* Released under the MIT License
*/
/**
* Description of import into Moodle:
*
* - Download Chartjs source code (zip) file from https://github.com/chartjs/Chart.js/releases/latest.
* - You must build Chart.js to generate the dist files (https://www.chartjs.org/docs/latest/developers/contributing.html#building-and-testing).
* Chart.js will generate a new file dist/chart.umd.js with minified format, in order to avoid the minification
* we need to modify rollup.config.js, find below code in the file:
* ```
* 1. // UMD build
* 2. // dist/chart.umd.js
* 3. {
* 4. input: 'src/index.umd.ts',
* 5. plugins: plugins(true),
* 6. output: {
* 7. ...
* 8. },
* 9. },
* ```
*
* Change line 5 into:
* ```
* plugins: plugins(),
* ```
*
* Save the file and run build script again.
*
* - Copy /dist/chart.umd.js content to lib/amd/src/chartjs-lazy.js.
* - Remove below line in the lib/amd/src/chartjs-lazy.js:
* ```
* //# sourceMappingURL=chart.umd.js.map
* ```
* - Convert line endings to LF-Unix format.
* - Change the version number and the copyright year at the file header block.
* - Keep these instructions in the file.
* - Visit lib/tests/other/chartjstestpage.php to see if the library still works after the update.
*
*/
(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';
var plugins = /*#__PURE__*/Object.freeze({
__proto__: null,
get Colors () { return plugin_colors; },
get Decimation () { return plugin_decimation; },
get Filler () { return index; },
get Legend () { return plugin_legend; },
get SubTitle () { return plugin_subtitle; },
get Title () { return plugin_title; },
get Tooltip () { return plugin_tooltip; }
});
/**
* @namespace Chart.helpers
*/ /**
* An empty function that can be used, for example, for optional callback.
*/ function noop() {
/* noop */ }
/**
* Returns a unique id, sequentially generated from a global variable.
*/ const uid = (()=>{
let id = 0;
return ()=>id++;
})();
/**
* Returns true if `value` is neither null nor undefined, else returns false.
* @param value - The value to test.
* @since 2.7.0
*/ function isNullOrUndef(value) {
return value === null || typeof value === 'undefined';
}
/**
* Returns true if `value` is an array (including typed arrays), else returns false.
* @param value - The value to test.
* @function
*/ function isArray(value) {
if (Array.isArray && Array.isArray(value)) {
return true;
}
const type = Object.prototype.toString.call(value);
if (type.slice(0, 7) === '[object' && type.slice(-6) === 'Array]') {
return true;
}
return false;
}
/**
* Returns true if `value` is an object (excluding null), else returns false.
* @param value - The value to test.
* @since 2.7.0
*/ function isObject(value) {
return value !== null && Object.prototype.toString.call(value) === '[object Object]';
}
/**
* Returns true if `value` is a finite number, else returns false
* @param value - The value to test.
*/ function isNumberFinite(value) {
return (typeof value === 'number' || value instanceof Number) && isFinite(+value);
}
/**
* Returns `value` if finite, else returns `defaultValue`.
* @param value - The value to return if defined.
* @param defaultValue - The value to return if `value` is not finite.
*/ function finiteOrDefault(value, defaultValue) {
return isNumberFinite(value) ? value : defaultValue;
}
/**
* Returns `value` if defined, else returns `defaultValue`.
* @param value - The value to return if defined.
* @param defaultValue - The value to return if `value` is undefined.
*/ 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;
/**
* Calls `fn` with the given `args` in the scope defined by `thisArg` and returns the
* value returned by `fn`. If `fn` is not a function, this method returns undefined.
* @param fn - The function to call.
* @param args - The arguments with which `fn` should be called.
* @param [thisArg] - The value of `this` provided for the call to `fn`.
*/ 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]);
}
}
}
/**
* Returns true if the `a0` and `a1` arrays have the same content, else returns false.
* @param a0 - The array to compare
* @param a1 - The array to compare
* @private
*/ 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;
}
/**
* Returns a deep copy of `source` without keeping references on objects and arrays.
* @param source - The value to clone.
*/ function clone$1(source) {
if (isArray(source)) {
return source.map(clone$1);
}
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$1(source[keys[k]]);
}
return target;
}
return source;
}
function isValidKey(key) {
return [
'__proto__',
'prototype',
'constructor'
].indexOf(key) === -1;
}
/**
* The default merger when Chart.helpers.merge is called without merger option.
* Note(SB): also used by mergeConfig and mergeScaleConfig as fallback.
* @private
*/ function _merger(key, target, source, options) {
if (!isValidKey(key)) {
return;
}
const tval = target[key];
const sval = source[key];
if (isObject(tval) && isObject(sval)) {
// eslint-disable-next-line @typescript-eslint/no-use-before-define
merge(tval, sval, options);
} else {
target[key] = clone$1(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;
let current;
for(let i = 0; i < ilen; ++i){
current = sources[i];
if (!isObject(current)) {
continue;
}
const keys = Object.keys(current);
for(let k = 0, klen = keys.length; k < klen; ++k){
merger(keys[k], target, current, options);
}
}
return target;
}
function mergeIf(target, source) {
// eslint-disable-next-line @typescript-eslint/no-use-before-define
return merge(target, source, {
merger: _mergerIf
});
}
/**
* Merges source[key] in target[key] only if target[key] is undefined.
* @private
*/ 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$1(sval);
}
}
/**
* @private
*/ function _deprecated(scope, value, previous, current) {
if (value !== undefined) {
console.warn(scope + ': "' + previous + '" is deprecated. Please use "' + current + '" instead');
}
}
// resolveObjectKey resolver cache
const keyResolvers = {
// Chart.helpers.core resolveObjectKey should resolve empty key to root object
'': (v)=>v,
// default resolvers
x: (o)=>o.x,
y: (o)=>o.y
};
/**
* @private
*/ function _splitKey(key) {
const parts = key.split('.');
const keys = [];
let tmp = '';
for (const part of parts){
tmp += part;
if (tmp.endsWith('\\')) {
tmp = tmp.slice(0, -1) + '.';
} else {
keys.push(tmp);
tmp = '';
}
}
return keys;
}
function _getKeyResolver(key) {
const keys = _splitKey(key);
return (obj)=>{
for (const k of keys){
if (k === '') {
break;
}
obj = obj && obj[k];
}
return obj;
};
}
function resolveObjectKey(obj, key) {
const resolver = keyResolvers[key] || (keyResolvers[key] = _getKeyResolver(key));
return resolver(obj);
}
/**
* @private
*/ function _capitalize(str) {
return str.charAt(0).toUpperCase() + str.slice(1);
}
const defined = (value)=>typeof value !== 'undefined';
const isFunction = (value)=>typeof value === 'function';
// Adapted from https://stackoverflow.com/questions/31128855/comparing-ecma6-sets-for-equality#31129384
const setsEqual = (a, b)=>{
if (a.size !== b.size) {
return false;
}
for (const item of a){
if (!b.has(item)) {
return false;
}
}
return true;
};
/**
* @param e - The event
* @private
*/ function _isClickEvent(e) {
return e.type === 'mouseup' || e.type === 'click' || e.type === 'contextmenu';
}
/**
* @alias Chart.helpers.math
* @namespace
*/ 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 almostEquals(x, y, epsilon) {
return Math.abs(x - y) < epsilon;
}
/**
* Implementation of the nice number algorithm used in determining where axis labels will go
*/ 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;
}
/**
* Returns an array of factors sorted from 1 to sqrt(value)
* @private
*/ 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 almostWhole(x, epsilon) {
const rounded = Math.round(x);
return rounded - epsilon <= x && rounded + epsilon >= x;
}
/**
* @private
*/ 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);
}
/**
* Returns the number of decimal places
* i.e. the number of digits after the decimal point, of the value of this Number.
* @param x - A number.
* @returns The number of decimal places.
* @private
*/ 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;
}
// Gets the angle from vertical upright to the point about a centre.
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; // make sure the returned angle is in the range of (-PI/2, 3PI/2]
}
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));
}
/**
* Shortest distance between angles, in either direction.
* @private
*/ function _angleDiff(a, b) {
return (a - b + PITAU) % TAU - PI;
}
/**
* Normalize angle to be between 0 and 2*PI
* @private
*/ function _normalizeAngle(a) {
return (a % TAU + TAU) % TAU;
}
/**
* @private
*/ 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;
}
/**
* Limit `value` between `min` and `max`
* @param value
* @param min
* @param max
* @private
*/ function _limitValue(value, min, max) {
return Math.max(min, Math.min(max, value));
}
/**
* @param {number} value
* @private
*/ function _int16Range(value) {
return _limitValue(value, -32768, 32767);
}
/**
* @param value
* @param start
* @param end
* @param [epsilon]
* @private
*/ function _isBetween(value, start, end, epsilon = 1e-6) {
return value >= Math.min(start, end) - epsilon && value <= Math.max(start, end) + epsilon;
}
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
};
}
/**
* Binary search
* @param table - the table search. must be sorted!
* @param key - property name for the value in each entry
* @param value - value to find
* @param last - lookup last index
* @private
*/ const _lookupByKey = (table, key, value, last)=>_lookup(table, value, last ? (index)=>{
const ti = table[index][key];
return ti < value || ti === value && table[index + 1][key] === value;
} : (index)=>table[index][key] < value);
/**
* Reverse binary search
* @param table - the table search. must be sorted!
* @param key - property name for the value in each entry
* @param value - value to find
* @private
*/ const _rlookupByKey = (table, key, value)=>_lookup(table, value, (index)=>table[index][key] >= value);
/**
* Return subset of `values` between `min` and `max` inclusive.
* Values are assumed to be in sorted order.
* @param values - sorted array of values
* @param min - min value
* @param max - max 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;
}
/**
* @param items
*/ function _arrayUnique(items) {
const set = new Set(items);
if (set.size === items.length) {
return items;
}
return Array.from(set);
}
function fontString(pixelSize, fontStyle, fontFamily) {
return fontStyle + ' ' + pixelSize + 'px ' + fontFamily;
}
/**
* Request animation polyfill
*/ const requestAnimFrame = function() {
if (typeof window === 'undefined') {
return function(callback) {
return callback();
};
}
return window.requestAnimationFrame;
}();
/**
* Throttles calling `fn` once per animation frame
* Latest arguments are used on the actual call
*/ function throttled(fn, thisArg) {
let argsToUse = [];
let ticking = false;
return function(...args) {
// Save the args for use later
argsToUse = args;
if (!ticking) {
ticking = true;
requestAnimFrame.call(window, ()=>{
ticking = false;
fn.apply(thisArg, argsToUse);
});
}
};
}
/**
* Debounces calling `fn` for `delay` ms
*/ function debounce(fn, delay) {
let timeout;
return function(...args) {
if (delay) {
clearTimeout(timeout);
timeout = setTimeout(fn, delay, args);
} else {
fn.apply(this, args);
}
return delay;
};
}
/**
* Converts 'start' to 'left', 'end' to 'right' and others to 'center'
* @private
*/ const _toLeftRightCenter = (align)=>align === 'start' ? 'left' : align === 'end' ? 'right' : 'center';
/**
* Returns `start`, `end` or `(start + end) / 2` depending on `align`. Defaults to `center`
* @private
*/ const _alignStartEnd = (align, start, end)=>align === 'start' ? start : align === 'end' ? end : (start + end) / 2;
/**
* Returns `left`, `right` or `(left + right) / 2` depending on `align`. Defaults to `left`
* @private
*/ const _textX = (align, left, right, rtl)=>{
const check = rtl ? 'left' : 'right';
return align === check ? right : align === 'center' ? (left + right) / 2 : left;
};
/**
* Return start and count of visible points.
* @private
*/ 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(// @ts-expect-error Need to type _parsed
_lookupByKey(_parsed, axis, min).lo, // @ts-expect-error Need to fix types on _lookupByKey
animationsDisabled ? pointCount : _lookupByKey(points, axis, iScale.getPixelForValue(min)).lo), 0, pointCount - 1);
}
if (maxDefined) {
count = _limitValue(Math.max(// @ts-expect-error Need to type _parsed
_lookupByKey(_parsed, iScale.axis, max, true).hi + 1, // @ts-expect-error Need to fix types on _lookupByKey
animationsDisabled ? 0 : _lookupByKey(points, axis, iScale.getPixelForValue(max), true).hi + 1), start, pointCount) - start;
} else {
count = pointCount - start;
}
}
return {
start,
count
};
}
/**
* Checks if the scale ranges have changed.
* @param {object} meta - dataset meta.
* @returns {boolean}
* @private
*/ 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 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() {
if (this._request) {
return;
}
this._running = true;
this._request = requestAnimFrame.call(window, ()=>{
this._update();
this._request = null;
if (this._running) {
this._refresh();
}
});
}
_update(date = Date.now()) {
let remaining = 0;
this._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();
this._notify(chart, anims, date, 'progress');
}
if (!items.length) {
anims.running = false;
this._notify(chart, anims, date, 'complete');
anims.initial = false;
}
remaining += items.length;
});
this._lastDate = date;
if (remaining === 0) {
this._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 = /* #__PURE__ */ new Animator();
/*!
* @kurkle/color v0.3.2
* https://github.com/kurkle/color#readme
* (c) 2023 Jukka Kurkela
* Released under the MIT License
*/
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 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);
const isShort = v => 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;
}
const alpha = (a, f) => a < 255 ? f(a) : '';
function hexString(v) {
var f = isShort(v) ? h1 : h2;
return v
? '#' + f(v.r) + f(v.g) + f(v.b) + alpha(v.a, f)
: undefined;
}
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 hueValue(r, g, b, d, max) {
if (r === max) {
return ((g - b) / d) + (g < b ? 6 : 0);
}
if (g === max) {
return (b - r) / d + 2;
}
return (r - g) / d + 4;
}
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 = hueValue(r, g, b, d, max);
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$2 = {
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$1 = {
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$1);
const tkeys = Object.keys(map$2);
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$2[k]);
}
k = parseInt(names$1[ok], 16);
unpacked[nk] = [k >> 16 & 0xFF, k >> 8 & 0xFF, k & 0xFF];
}
return unpacked;
}
let names;
function nameParse(str) {
if (!names) {
names = unpack();
names.transparent = [0, 0, 0, 0];
}
const a = names[str.toLowerCase()];
return a && {
r: a[0],
g: a[1],
b: a[2],
a: a.length === 4 ? a[3] : 255
};
}
const RGB_RE = /^rgba?\(\s*([-+.\d]+)(%)?[\s,]+([-+.e\d]+)(%)?[\s,]+([-+.e\d]+)(%)?(?:[\s,/]+([-+.e\d]+)(%)?)?\s*\)$/;
function rgbParse(str) {
const m = RGB_RE.exec(str);
let a = 255;
let r, g, b;
if (!m) {
return;
}
if (m[7] !== r) {
const v = +m[7];
a = m[8] ? p2b(v) : lim(v * 255, 0, 255);
}
r = +m[1];
g = +m[3];
b = +m[5];
r = 255 & (m[2] ? p2b(r) : lim(r, 0, 255));
g = 255 & (m[4] ? p2b(g) : lim(g, 0, 255));
b = 255 & (m[6] ? p2b(b) : lim(b, 0, 255));
return {
r: r,
g: g,
b: b,
a: a
};
}
function rgbString(v) {
return v && (
v.a < 255
? `rgba(${v.r}, ${v.g}, ${v.b}, ${b2n(v.a)})`
: `rgb(${v.r}, ${v.g}, ${v.b})`
);
}
const to = v => v <= 0.0031308 ? v * 12.92 : Math.pow(v, 1.0 / 2.4) * 1.055 - 0.055;
const from = v => v <= 0.04045 ? v / 12.92 : Math.pow((v + 0.055) / 1.055, 2.4);
function interpolate$1(rgb1, rgb2, t) {
const r = from(b2n(rgb1.r));
const g = from(b2n(rgb1.g));
const b = from(b2n(rgb1.b));
return {
r: n2b(to(r + t * (from(b2n(rgb2.r)) - r))),
g: n2b(to(g + t * (from(b2n(rgb2.g)) - g))),
b: n2b(to(b + t * (from(b2n(rgb2.b)) - b))),
a: rgb1.a + t * (rgb2.a - rgb1.a)
};
}
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(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(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(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) : undefined;
}
hexString() {
return this._valid ? hexString(this._rgb) : undefined;
}
hslString() {
return this._valid ? hslString(this._rgb) : undefined;
}
mix(color, weight) {
if (color) {
const c1 = this.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;
this.rgb = c1;
}
return this;
}
interpolate(color, t) {
if (color) {
this._rgb = interpolate$1(this._rgb, color._rgb, t);
}
return this;
}
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 isPatternOrGradient(value) {
if (value && typeof value === 'object') {
const type = value.toString();
return type === '[object CanvasPattern]' || type === '[object CanvasGradient]';
}
return false;
}
function color(value) {
return isPatternOrGradient(value) ? value : new Color(value);
}
function getHoverColor(value) {
return isPatternOrGradient(value) ? value : new Color(value).saturate(0.5).darken(0.1).hexString();
}
const numbers = [
'x',
'y',
'borderWidth',
'radius',
'tension'
];
const colors = [
'color',
'borderColor',
'backgroundColor'
];
function applyAnimationsDefaults(defaults) {
defaults.set('animation', {
delay: undefined,
duration: 1000,
easing: 'easeOutQuart',
fn: undefined,
from: undefined,
loop: undefined,
to: undefined,
type: undefined
});
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
}
}
}
});
}
function applyLayoutsDefaults(defaults) {
defaults.set('layout', {
autoPadding: true,
padding: {
top: 0,
right: 0,
bottom: 0,
left: 0
}
});
}
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 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 = isNaN(logDelta) ? 1 : 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 = ticks[index].significand || tickValue / Math.pow(10, Math.floor(log10(tickValue)));
if ([
1,
2,
3,
5,
10,
15
].includes(remain) || index > 0.8 * ticks.length) {
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
};
function applyScaleDefaults(defaults) {
defaults.set('scale', {
display: true,
offset: false,
reverse: false,
beginAtZero: false,
bounds: 'ticks',
clip: true,
grace: 0,
grid: {
display: true,
lineWidth: 1,
drawOnChartArea: true,
drawTicks: true,
tickLength: 8,
tickWidth: (_ctx, options)=>options.lineWidth,
tickColor: (_ctx, options)=>options.color,
offset: false
},
border: {
display: true,
dash: [],
dashOffset: 0.0,
width: 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.border', 'color', '', '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' && name !== 'dash'
});
defaults.describe('scales', {
_fallback: 'scale'
});
defaults.describe('scale.ticks', {
_scriptable: (name)=>name !== 'backdropPadding' && name !== 'callback',
_indexable: (name)=>name !== 'backdropPadding'
});
}
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, _appliers){
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,
includeInvisible: false
};
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.drawActiveElementsOnTop = true;
this.describe(_descriptors);
this.apply(_appliers);
}
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;
}
}
});
}
apply(appliers) {
appliers.forEach((apply)=>apply(this));
}
}
var defaults = /* #__PURE__ */ new Defaults({
_scriptable: (name)=>!name.startsWith('on'),
_indexable: (name)=>name !== 'events',
hover: {
_fallback: 'interaction'
},
interaction: {
_scriptable: false,
_indexable: false
}
}, [
applyAnimationsDefaults,
applyLayoutsDefaults,
applyScaleDefaults
]);
/**
* Note: typedefs are auto-exported, so use a made-up `dom` namespace where
* necessary to avoid duplicates with `export * from './helpers`; see
* https://github.com/microsoft/TypeScript/issues/46011
* @typedef { import('../core/core.controller.js').default } dom.Chart
* @typedef { import('../../types').ChartEvent } ChartEvent
*/ /**
* @private
*/ function _isDomSupported() {
return typeof window !== 'undefined' && typeof document !== 'undefined';
}
/**
* @private
*/ function _getParentNode(domNode) {
let parent = domNode.parentNode;
if (parent && parent.toString() === '[object ShadowRoot]') {
parent = parent.host;
}
return parent;
}
/**
* convert max-width/max-height values that may be percentages into a number
* @private
*/ function parseMaxStyle(styleValue, node, parentProperty) {
let valueInPixels;
if (typeof styleValue === 'string') {
valueInPixels = parseInt(styleValue, 10);
if (styleValue.indexOf('%') !== -1) {
// percentage * size in dimension
valueInPixels = valueInPixels / 100 * node.parentNode[parentProperty];
}
} else {
valueInPixels = styleValue;
}
return valueInPixels;
}
const getComputedStyle = (element)=>element.ownerDocument.defaultView.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);
/**
* @param e
* @param canvas
* @returns Canvas position
*/ function getCanvasPosition(e, canvas) {
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
};
}
/**
* Gets an event's x, y coordinates, relative to the chart area
* @param event
* @param chart
* @returns x and y coordinates of the event
*/ function getRelativePosition(event, chart) {
if ('native' in event) {
return event;
}
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(event, 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(); // this is the border box of the container
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;
// eslint-disable-next-line complexity
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 ? width / aspectRatio : height - margins.height);
width = round1(Math.min(width, maxWidth, containerSize.maxWidth));
height = round1(Math.min(height, maxHeight, containerSize.maxHeight));
if (width && !height) {
// https://github.com/chartjs/Chart.js/issues/4659
// If the canvas has width, but no height, default to aspectRatio of 2 (canvas default)
height = round1(width / 2);
}
const maintainHeight = bbWidth !== undefined || bbHeight !== undefined;
if (maintainHeight && aspectRatio && containerSize.height && height > containerSize.height) {
height = containerSize.height;
width = round1(Math.floor(height * aspectRatio));
}
return {
width,
height
};
}
/**
* @param chart
* @param forceRatio
* @param forceStyle
* @returns True if the canvas context size or transformation has changed.
*/ 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 = Math.floor(chart.height);
chart.width = Math.floor(chart.width);
const canvas = chart.canvas;
// If no style has been set on the canvas, the render size is used as display size,
// making the chart visually bigger, so let's enforce it to the "correct" values.
// See https://github.com/chartjs/Chart.js/issues/3575
if (canvas.style && (forceStyle || !canvas.style.height && !canvas.style.width)) {
canvas.style.height = `${chart.height}px`;
canvas.style.width = `${chart.width}px`;
}
if (chart.currentDevicePixelRatio !== pixelRatio || canvas.height !== deviceHeight || canvas.width !== deviceWidth) {
chart.currentDevicePixelRatio = pixelRatio;
canvas.height = deviceHeight;
canvas.width = deviceWidth;
chart.ctx.setTransform(pixelRatio, 0, 0, pixelRatio, 0, 0);
return true;
}
return false;
}
/**
* Detects support for options object argument in addEventListener.
* https://developer.mozilla.org/en-US/docs/Web/API/EventTarget/addEventListener#Safely_detecting_option_support
* @private
*/ const supportsEventListenerOptions = function() {
let passiveSupported = false;
try {
const options = {
get passive () {
passiveSupported = true;
return false;
}
};
if (_isDomSupported()) {
window.addEventListener('test', null, options);
window.removeEventListener('test', null, options);
}
} catch (e) {
// continue regardless of error
}
return passiveSupported;
}();
/**
* The "used" size is the final value of a dimension property after all calculations have
* been performed. This method uses the computed style of `element` but returns undefined
* if the computed style is not expressed in pixels. That can happen in some cases where
* `element` has a size relative to its parent and this last one is not yet displayed,
* for example because of `display: none` on a parent node.
* @see https://developer.mozilla.org/en-US/docs/Web/CSS/used_value
* @returns Size in pixels or undefined if unknown.
*/ function readUsedSize(element, property) {
const value = getStyle(element, property);
const matches = value && value.match(/^(\d+)(\.\d+)?px$/);
return matches ? +matches[1] : undefined;
}
/**
* Converts the given font object into a CSS font string.
* @param font - A font object.
* @return The CSS font string. See https://developer.mozilla.org/en-US/docs/Web/CSS/font
* @private
*/ 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;
}
/**
* @private
*/ 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;
}
/**
* @private
*/ // eslint-disable-next-line complexity
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];
// Undefined strings and arrays should not be measured
if (thing !== undefined && thing !== null && !isArray(thing)) {
longest = _measureText(ctx, data, gc, longest, thing);
} else if (isArray(thing)) {
// if it is an array lets measure each element
// to do maybe simplify this function a bit so we can do this more recursively?
for(j = 0, jlen = thing.length; j < jlen; j++){
nestedThing = thing[j];
// Undefined strings and arrays should not be measured
if (nestedThing !== undefined && nestedThing !== null && !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;
}
/**
* Returns the aligned pixel value to avoid anti-aliasing blur
* @param chart - The chart instance.
* @param pixel - A pixel value.
* @param width - The width of the element.
* @returns The aligned pixel value.
* @private
*/ 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;
}
/**
* Clears the entire canvas.
*/ function clearCanvas(canvas, ctx) {
ctx = ctx || canvas.getContext('2d');
ctx.save();
// canvas.width and canvas.height do not consider the canvas transform,
// while clearRect does
ctx.resetTransform();
ctx.clearRect(0, 0, canvas.width, canvas.height);
ctx.restore();
}
function drawPoint(ctx, options, x, y) {
// eslint-disable-next-line @typescript-eslint/no-use-before-define
drawPointLegend(ctx, options, x, y, null);
}
// eslint-disable-next-line complexity
function drawPointLegend(ctx, options, x, y, w) {
let type, xOffset, yOffset, size, cornerRadius, width, xOffsetW, yOffsetW;
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 includes circle
default:
if (w) {
ctx.ellipse(x, y, w / 2, radius, 0, 0, TAU);
} else {
ctx.arc(x, y, radius, 0, TAU);
}
ctx.closePath();
break;
case 'triangle':
width = w ? w / 2 : radius;
ctx.moveTo(x + Math.sin(rad) * width, y - Math.cos(rad) * radius);
rad += TWO_THIRDS_PI;
ctx.lineTo(x + Math.sin(rad) * width, y - Math.cos(rad) * radius);
rad += TWO_THIRDS_PI;
ctx.lineTo(x + Math.sin(rad) * width, y - Math.cos(rad) * radius);
ctx.closePath();
break;
case 'rectRounded':
// NOTE: the rounded rect implementation changed to use `arc` instead of
// `quadraticCurveTo` since it generates better results when rect is
// almost a circle. 0.516 (instead of 0.5) produces results with visually
// closer proportion to the previous impl and it is inscribed in the
// circle with `radius`. For more details, see the following PRs:
// https://github.com/chartjs/Chart.js/issues/5597
// https://github.com/chartjs/Chart.js/issues/5858
cornerRadius = radius * 0.516;
size = radius - cornerRadius;
xOffset = Math.cos(rad + QUARTER_PI) * size;
xOffsetW = Math.cos(rad + QUARTER_PI) * (w ? w / 2 - cornerRadius : size);
yOffset = Math.sin(rad + QUARTER_PI) * size;
yOffsetW = Math.sin(rad + QUARTER_PI) * (w ? w / 2 - cornerRadius : size);
ctx.arc(x - xOffsetW, y - yOffset, cornerRadius, rad - PI, rad - HALF_PI);
ctx.arc(x + yOffsetW, y - xOffset, cornerRadius, rad - HALF_PI, rad);
ctx.arc(x + xOffsetW, y + yOffset, cornerRadius, rad, rad + HALF_PI);
ctx.arc(x - yOffsetW, y + xOffset, cornerRadius, rad + HALF_PI, rad + PI);
ctx.closePath();
break;
case 'rect':
if (!rotation) {
size = Math.SQRT1_2 * radius;
width = w ? w / 2 : size;
ctx.rect(x - width, y - size, 2 * width, 2 * size);
break;
}
rad += QUARTER_PI;
/* falls through */ case 'rectRot':
xOffsetW = Math.cos(rad) * (w ? w / 2 : radius);
xOffset = Math.cos(rad) * radius;
yOffset = Math.sin(rad) * radius;
yOffsetW = Math.sin(rad) * (w ? w / 2 : radius);
ctx.moveTo(x - xOffsetW, y - yOffset);
ctx.lineTo(x + yOffsetW, y - xOffset);
ctx.lineTo(x + xOffsetW, y + yOffset);
ctx.lineTo(x - yOffsetW, y + xOffset);
ctx.closePath();
break;
case 'crossRot':
rad += QUARTER_PI;
/* falls through */ case 'cross':
xOffsetW = Math.cos(rad) * (w ? w / 2 : radius);
xOffset = Math.cos(rad) * radius;
yOffset = Math.sin(rad) * radius;
yOffsetW = Math.sin(rad) * (w ? w / 2 : radius);
ctx.moveTo(x - xOffsetW, y - yOffset);
ctx.lineTo(x + xOffsetW, y + yOffset);
ctx.moveTo(x + yOffsetW, y - xOffset);
ctx.lineTo(x - yOffsetW, y + xOffset);
break;
case 'star':
xOffsetW = Math.cos(rad) * (w ? w / 2 : radius);
xOffset = Math.cos(rad) * radius;
yOffset = Math.sin(rad) * radius;
yOffsetW = Math.sin(rad) * (w ? w / 2 : radius);
ctx.moveTo(x - xOffsetW, y - yOffset);
ctx.lineTo(x + xOffsetW, y + yOffset);
ctx.moveTo(x + yOffsetW, y - xOffset);
ctx.lineTo(x - yOffsetW, y + xOffset);
rad += QUARTER_PI;
xOffsetW = Math.cos(rad) * (w ? w / 2 : radius);
xOffset = Math.cos(rad) * radius;
yOffset = Math.sin(rad) * radius;
yOffsetW = Math.sin(rad) * (w ? w / 2 : radius);
ctx.moveTo(x - xOffsetW, y - yOffset);
ctx.lineTo(x + xOffsetW, y + yOffset);
ctx.moveTo(x + yOffsetW, y - xOffset);
ctx.lineTo(x - yOffsetW, y + xOffset);
break;
case 'line':
xOffset = w ? w / 2 : 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) * (w ? w / 2 : radius), y + Math.sin(rad) * radius);
break;
case false:
ctx.closePath();
break;
}
ctx.fill();
if (options.borderWidth > 0) {
ctx.stroke();
}
}
/**
* Returns true if the point is inside the rectangle
* @param point - The point to test
* @param area - The rectangle
* @param margin - allowed margin
* @private
*/ function _isPointInArea(point, area, margin) {
margin = margin || 0.5; // margin - default is to match rounded decimals
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();
}
/**
* @private
*/ 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);
}
/**
* @private
*/ 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 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) {
/**
* Now that IE11 support has been dropped, we can use more
* of the TextMetrics object. The actual bounding boxes
* are unflagged in Chrome, Firefox, Edge, and Safari so they
* can be safely used.
* See https://developer.mozilla.org/en-US/docs/Web/API/TextMetrics#Browser_compatibility
*/ 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 drawBackdrop(ctx, opts) {
const oldColor = ctx.fillStyle;
ctx.fillStyle = opts.color;
ctx.fillRect(opts.left, opts.top, opts.width, opts.height);
ctx.fillStyle = oldColor;
}
/**
* Render text onto the canvas
*/ 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 (opts.backdrop) {
drawBackdrop(ctx, opts.backdrop);
}
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 += Number(font.lineHeight);
}
ctx.restore();
}
/**
* Add a path of a rectangle with rounded corners to the current sub-path
* @param ctx - Context
* @param rect - Bounding rect
*/ function addRoundedRectPath(ctx, rect) {
const { x , y , w , h , radius } = rect;
// top left arc
ctx.arc(x + radius.topLeft, y + radius.topLeft, radius.topLeft, 1.5 * PI, PI, true);
// line from top left to bottom left
ctx.lineTo(x, y + h - radius.bottomLeft);
// bottom left arc
ctx.arc(x + radius.bottomLeft, y + h - radius.bottomLeft, radius.bottomLeft, PI, HALF_PI, true);
// line from bottom left to bottom right
ctx.lineTo(x + w - radius.bottomRight, y + h);
// bottom right arc
ctx.arc(x + w - radius.bottomRight, y + h - radius.bottomRight, radius.bottomRight, HALF_PI, 0, true);
// line from bottom right to top right
ctx.lineTo(x + w, y + radius.topRight);
// top right arc
ctx.arc(x + w - radius.topRight, y + radius.topRight, radius.topRight, 0, -HALF_PI, true);
// line from top right to top left
ctx.lineTo(x + radius.topLeft, y);
}
/**
* Creates a Proxy for resolving raw values for options.
* @param scopes - The option scopes to look for values, in resolution order
* @param prefixes - The prefixes for values, in resolution order.
* @param rootScopes - The root option scopes
* @param fallback - Parent scopes fallback
* @param getTarget - callback for getting the target for changed values
* @returns Proxy
* @private
*/ function _createResolver(scopes, prefixes = [
''
], rootScopes, fallback, getTarget = ()=>scopes[0]) {
const finalRootScopes = rootScopes || scopes;
if (typeof fallback === 'undefined') {
fallback = _resolve('_fallback', scopes);
}
const cache = {
[Symbol.toStringTag]: 'Object',
_cacheable: true,
_scopes: scopes,
_rootScopes: finalRootScopes,
_fallback: fallback,
_getTarget: getTarget,
override: (scope)=>_createResolver([
scope,
...scopes
], prefixes, finalRootScopes, fallback)
};
return new Proxy(cache, {
/**
* A trap for the delete operator.
*/ deleteProperty (target, prop) {
delete target[prop]; // remove from cache
delete target._keys; // remove cached keys
delete scopes[0][prop]; // remove from top level scope
return true;
},
/**
* A trap for getting property values.
*/ get (target, prop) {
return _cached(target, prop, ()=>_resolveWithPrefixes(prop, prefixes, scopes, target));
},
/**
* A trap for Object.getOwnPropertyDescriptor.
* Also used by Object.hasOwnProperty.
*/ getOwnPropertyDescriptor (target, prop) {
return Reflect.getOwnPropertyDescriptor(target._scopes[0], prop);
},
/**
* A trap for Object.getPrototypeOf.
*/ getPrototypeOf () {
return Reflect.getPrototypeOf(scopes[0]);
},
/**
* A trap for the in operator.
*/ has (target, prop) {
return getKeysFromAllScopes(target).includes(prop);
},
/**
* A trap for Object.getOwnPropertyNames and Object.getOwnPropertySymbols.
*/ ownKeys (target) {
return getKeysFromAllScopes(target);
},
/**
* A trap for setting property values.
*/ set (target, prop, value) {
const storage = target._storage || (target._storage = getTarget());
target[prop] = storage[prop] = value; // set to top level scope + cache
delete target._keys; // remove cached keys
return true;
}
});
}
/**
* Returns an Proxy for resolving option values with context.
* @param proxy - The Proxy returned by `_createResolver`
* @param context - Context object for scriptable/indexable options
* @param subProxy - The proxy provided for scriptable options
* @param descriptorDefaults - Defaults for descriptors
* @private
*/ 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, {
/**
* A trap for the delete operator.
*/ deleteProperty (target, prop) {
delete target[prop]; // remove from cache
delete proxy[prop]; // remove from proxy
return true;
},
/**
* A trap for getting property values.
*/ get (target, prop, receiver) {
return _cached(target, prop, ()=>_resolveWithContext(target, prop, receiver));
},
/**
* A trap for Object.getOwnPropertyDescriptor.
* Also used by Object.hasOwnProperty.
*/ getOwnPropertyDescriptor (target, prop) {
return target._descriptors.allKeys ? Reflect.has(proxy, prop) ? {
enumerable: true,
configurable: true
} : undefined : Reflect.getOwnPropertyDescriptor(proxy, prop);
},
/**
* A trap for Object.getPrototypeOf.
*/ getPrototypeOf () {
return Reflect.getPrototypeOf(proxy);
},
/**
* A trap for the in operator.
*/ has (target, prop) {
return Reflect.has(proxy, prop);
},
/**
* A trap for Object.getOwnPropertyNames and Object.getOwnPropertySymbols.
*/ ownKeys () {
return Reflect.ownKeys(proxy);
},
/**
* A trap for setting property values.
*/ set (target, prop, value) {
proxy[prop] = value; // set to proxy
delete target[prop]; // remove from cache
return true;
}
});
}
/**
* @private
*/ 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' && (Object.getPrototypeOf(value) === null || value.constructor === Object);
function _cached(target, prop, resolve) {
if (Object.prototype.hasOwnProperty.call(target, prop)) {
return target[prop];
}
const value = resolve();
// cache the resolved value
target[prop] = value;
return value;
}
function _resolveWithContext(target, prop, receiver) {
const { _proxy , _context , _subProxy , _descriptors: descriptors } = target;
let value = _proxy[prop]; // resolve from proxy
// resolve with context
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)) {
// if the resolved value is an object, create a sub resolver for it
value = _attachContext(value, _context, _subProxy && _subProxy[prop], descriptors);
}
return value;
}
function _resolveScriptable(prop, getValue, 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);
let value = getValue(_context, _subProxy || receiver);
_stack.delete(prop);
if (needsSubResolver(prop, value)) {
// When scriptable option returns an object, create a resolver on that.
value = createSubResolver(_proxy._scopes, _proxy, prop, value);
}
return value;
}
function _resolveArray(prop, value, target, isIndexable) {
const { _proxy , _context , _subProxy , _descriptors: descriptors } = target;
if (typeof _context.index !== 'undefined' && isIndexable(prop)) {
return value[_context.index % value.length];
} else if (isObject(value[0])) {
// Array of objects, return array or resolvers
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, value) {
for (const parent of parentScopes){
const scope = getScope(key, parent);
if (scope) {
set.add(scope);
const fallback = resolveFallback(scope._fallback, key, value);
if (typeof fallback !== 'undefined' && fallback !== key && fallback !== parentFallback) {
// When we reach the descriptor that defines a new _fallback, return that.
// The fallback will resume to that new scope.
return fallback;
}
} else if (scope === false && typeof parentFallback !== 'undefined' && key !== parentFallback) {
// Fallback to `false` results to `false`, when falling back to different key.
// For example `interaction` from `hover` or `plugins.tooltip` and `animation` from `animations`
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, value);
if (key === null) {
return false;
}
if (typeof fallback !== 'undefined' && fallback !== prop) {
key = addScopesFromKey(set, allScopes, fallback, key, value);
if (key === null) {
return false;
}
}
return _createResolver(Array.from(set), [
''
], rootScopes, fallback, ()=>subGetTarget(resolver, prop, value));
}
function addScopesFromKey(set, allScopes, key, fallback, item) {
while(key){
key = addScopes(set, allScopes, key, fallback, item);
}
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)) {
// For array of objects, the object is used to store updated values
return value;
}
return target || {};
}
function _resolveWithPrefixes(prop, prefixes, scopes, proxy) {
let value;
for (const prefix of prefixes){
value = _resolve(readKey(prefix, prop), scopes);
if (typeof value !== 'undefined') {
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 (typeof value !== 'undefined') {
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);
}
function _parseObjectDataRadialScale(meta, data, start, count) {
const { iScale } = meta;
const { key ='r' } = 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] = {
r: iScale.parse(resolveObjectKey(item, key), index)
};
}
return parsed;
}
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) {
// Props to Rob Spencer at scaled innovation for his post on splining between points
// http://scaledinnovation.com/analytics/splines/aboutSplines.html
// This function must also respect "skipped" points
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);
// If all points are the same, s01 & s02 will be inf
s01 = isNaN(s01) ? 0 : s01;
s12 = isNaN(s12) ? 0 : s12;
const fa = t * s01; // scaling factor for triangle Ta
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)
}
};
}
/**
* Adjust tangents to ensure monotonic properties
*/ 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];
}
}
}
/**
* This function calculates Bézier control points in a similar way than |splineCurve|,
* but preserves monotonicity of the provided data and ensures no local extremums are added
* between the dataset discrete points due to the interpolation.
* See : https://en.wikipedia.org/wiki/Monotone_cubic_interpolation
*/ function splineCurveMonotone(points, indexAxis = 'x') {
const valueAxis = getValueAxis(indexAxis);
const pointsLen = points.length;
const deltaK = Array(pointsLen).fill(0);
const mK = Array(pointsLen);
// Calculate slopes (deltaK) and initialize tangents (mK)
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];
// In the case of two points that appear at the same x pixel, slopeDeltaX is 0
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);
}
}
}
/**
* @private
*/ function _updateBezierControlPoints(points, options, area, loop, indexAxis) {
let i, ilen, point, controlPoints;
// Only consider points that are drawn in case the spanGaps option is used
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;
/**
* Easing functions adapted from Robert Penner's easing equations.
* @namespace Chart.helpers.easing.effects
* @see http://www.robertpenner.com/easing/
*/ 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
};
/**
* @private
*/ function _pointInLine(p1, p2, t, mode) {
return {
x: p1.x + t * (p2.x - p1.x),
y: p1.y + t * (p2.y - p1.y)
};
}
/**
* @private
*/ 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
};
}
/**
* @private
*/ 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 LINE_HEIGHT = /^(normal|(\d+(?:\.\d+)?)(px|em|%)?)$/;
const FONT_STYLE = /^(normal|italic|initial|inherit|unset|(oblique( -?[0-9]?[0-9]deg)?))$/;
/**
* @alias Chart.helpers.options
* @namespace
*/ /**
* Converts the given line height `value` in pixels for a specific font `size`.
* @param value - The lineHeight to parse (eg. 1.6, '14px', '75%', '1.6em').
* @param size - The font size (in pixels) used to resolve relative `value`.
* @returns The effective line height in pixels (size * 1.2 if value is invalid).
* @see https://developer.mozilla.org/en-US/docs/Web/CSS/line-height
* @since 2.7.0
*/ 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 = (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(read(prop));
}
return ret;
}
/**
* Converts the given value into a TRBL object.
* @param value - If a number, set the value to all TRBL component,
* else, if an object, use defined properties and sets undefined ones to 0.
* x / y are shorthands for same value for left/right and top/bottom.
* @returns The padding values (top, right, bottom, left)
* @since 3.0.0
*/ function toTRBL(value) {
return _readValueToProps(value, {
top: 'y',
right: 'x',
bottom: 'y',
left: 'x'
});
}
/**
* Converts the given value into a TRBL corners object (similar with css border-radius).
* @param value - If a number, set the value to all TRBL corner components,
* else, if an object, use defined properties and sets undefined ones to 0.
* @returns The TRBL corner values (topLeft, topRight, bottomLeft, bottomRight)
* @since 3.0.0
*/ function toTRBLCorners(value) {
return _readValueToProps(value, [
'topLeft',
'topRight',
'bottomLeft',
'bottomRight'
]);
}
/**
* Converts the given value into a padding object with pre-computed width/height.
* @param value - If a number, set the value to all TRBL component,
* else, if an object, use defined properties and sets undefined ones to 0.
* x / y are shorthands for same value for left/right and top/bottom.
* @returns The padding values (top, right, bottom, left, width, height)
* @since 2.7.0
*/ function toPadding(value) {
const obj = toTRBL(value);
obj.width = obj.left + obj.right;
obj.height = obj.top + obj.bottom;
return obj;
}
/**
* Parses font options and returns the font object.
* @param options - A object that contains font options to be parsed.
* @param fallback - A object that contains fallback font options.
* @return The font object.
* @private
*/ 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 = undefined;
}
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;
}
/**
* Evaluates the given `inputs` sequentially and returns the first defined value.
* @param inputs - An array of values, falling back to the last value.
* @param context - If defined and the current value is a function, the value
* is called with `context` as first argument and the result becomes the new input.
* @param index - If defined and the current value is an array, the value
* at `index` become the new input.
* @param info - object to return information about resolution in
* @param info.cacheable - Will be set to `false` if option is not cacheable.
* @since 2.7.0
*/ 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;
}
}
}
/**
* @param minmax
* @param grace
* @param beginAtZero
* @private
*/ function _addGrace(minmax, grace, beginAtZero) {
const { min , max } = minmax;
const change = toDimension(grace, (max - min) / 2);
const keepZero = (value, add)=>beginAtZero && value === 0 ? 0 : value + add;
return {
min: keepZero(min, -Math.abs(change)),
max: keepZero(max, change)
};
}
function createContext(parentContext, context) {
return Object.assign(Object.create(parentContext), context);
}
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: _isBetween,
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 chartContext = line._chart.getContext();
const baseStyle = readStyle(line.options);
const { _datasetIndex: datasetIndex , options: { spanGaps } } = line;
const count = points.length;
const result = [];
let prevStyle = baseStyle;
let start = segments[0].start;
let i = start;
function addStyle(s, e, l, st) {
const dir = spanGaps ? -1 : 1;
if (s === e) {
return;
}
s += count;
while(points[s % count].skip){
s -= dir;
}
while(points[e % count].skip){
e += dir;
}
if (s % count !== e % count) {
result.push({
start: s % count,
end: e % count,
loop: l,
style: st
});
prevStyle = st;
start = e % count;
}
}
for (const segment of segments){
start = spanGaps ? start : segment.start;
let prev = points[start % count];
let style;
for(i = start + 1; i <= segment.end; i++){
const pt = points[i % count];
style = readStyle(segmentOptions.setContext(createContext(chartContext, {
type: 'segment',
p0: prev,
p1: pt,
p0DataIndex: (i - 1) % count,
p1DataIndex: i % count,
datasetIndex
})));
if (styleChanged(style, prevStyle)) {
addStyle(start, i - 1, segment.loop, prevStyle);
}
prev = pt;
prevStyle = style;
}
if (start < i - 1) {
addStyle(start, i - 1, segment.loop, prevStyle);
}
}
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) {
if (!prevStyle) {
return false;
}
const cache = [];
const replacer = function(key, value) {
if (!isPatternOrGradient(value)) {
return value;
}
if (!cache.includes(value)) {
cache.push(value);
}
return cache.indexOf(value);
};
return JSON.stringify(style, replacer) !== JSON.stringify(prevStyle, replacer);
}
var helpers = /*#__PURE__*/Object.freeze({
__proto__: null,
HALF_PI: HALF_PI,
INFINITY: INFINITY,
PI: PI,
PITAU: PITAU,
QUARTER_PI: QUARTER_PI,
RAD_PER_DEG: RAD_PER_DEG,
TAU: TAU,
TWO_THIRDS_PI: TWO_THIRDS_PI,
_addGrace: _addGrace,
_alignPixel: _alignPixel,
_alignStartEnd: _alignStartEnd,
_angleBetween: _angleBetween,
_angleDiff: _angleDiff,
_arrayUnique: _arrayUnique,
_attachContext: _attachContext,
_bezierCurveTo: _bezierCurveTo,
_bezierInterpolation: _bezierInterpolation,
_boundSegment: _boundSegment,
_boundSegments: _boundSegments,
_capitalize: _capitalize,
_computeSegments: _computeSegments,
_createResolver: _createResolver,
_decimalPlaces: _decimalPlaces,
_deprecated: _deprecated,
_descriptors: _descriptors,
_elementsEqual: _elementsEqual,
_factorize: _factorize,
_filterBetween: _filterBetween,
_getParentNode: _getParentNode,
_getStartAndCountOfVisiblePoints: _getStartAndCountOfVisiblePoints,
_int16Range: _int16Range,
_isBetween: _isBetween,
_isClickEvent: _isClickEvent,
_isDomSupported: _isDomSupported,
_isPointInArea: _isPointInArea,
_limitValue: _limitValue,
_longestText: _longestText,
_lookup: _lookup,
_lookupByKey: _lookupByKey,
_measureText: _measureText,
_merger: _merger,
_mergerIf: _mergerIf,
_normalizeAngle: _normalizeAngle,
_parseObjectDataRadialScale: _parseObjectDataRadialScale,
_pointInLine: _pointInLine,
_readValueToProps: _readValueToProps,
_rlookupByKey: _rlookupByKey,
_scaleRangesChanged: _scaleRangesChanged,
_setMinAndMaxByKey: _setMinAndMaxByKey,
_splitKey: _splitKey,
_steppedInterpolation: _steppedInterpolation,
_steppedLineTo: _steppedLineTo,
_textX: _textX,
_toLeftRightCenter: _toLeftRightCenter,
_updateBezierControlPoints: _updateBezierControlPoints,
addRoundedRectPath: addRoundedRectPath,
almostEquals: almostEquals,
almostWhole: almostWhole,
callback: callback,
clearCanvas: clearCanvas,
clipArea: clipArea,
clone: clone$1,
color: color,
createContext: createContext,
debounce: debounce,
defined: defined,
distanceBetweenPoints: distanceBetweenPoints,
drawPoint: drawPoint,
drawPointLegend: drawPointLegend,
each: each,
easingEffects: effects,
finiteOrDefault: finiteOrDefault,
fontString: fontString,
formatNumber: formatNumber,
getAngleFromPoint: getAngleFromPoint,
getHoverColor: getHoverColor,
getMaximumSize: getMaximumSize,
getRelativePosition: getRelativePosition,
getRtlAdapter: getRtlAdapter,
getStyle: getStyle,
isArray: isArray,
isFinite: isNumberFinite,
isFunction: isFunction,
isNullOrUndef: isNullOrUndef,
isNumber: isNumber,
isObject: isObject,
isPatternOrGradient: isPatternOrGradient,
listenArrayEvents: listenArrayEvents,
log10: log10,
merge: merge,
mergeIf: mergeIf,
niceNum: niceNum,
noop: noop,
overrideTextDirection: overrideTextDirection,
readUsedSize: readUsedSize,
renderText: renderText,
requestAnimFrame: requestAnimFrame,
resolve: resolve,
resolveObjectKey: resolveObjectKey,
restoreTextDirection: restoreTextDirection,
retinaScale: retinaScale,
setsEqual: setsEqual,
sign: sign,
splineCurve: splineCurve,
splineCurveMonotone: splineCurveMonotone,
supportsEventListenerOptions: supportsEventListenerOptions,
throttled: throttled,
toDegrees: toDegrees,
toDimension: toDimension,
toFont: toFont,
toFontString: toFontString,
toLineHeight: toLineHeight,
toPadding: toPadding,
toPercentage: toPercentage,
toRadians: toRadians,
toTRBL: toTRBL,
toTRBLCorners: toTRBLCorners,
uid: uid,
unclipArea: unclipArea,
unlistenArrayEvents: unlistenArrayEvents,
valueOrDefault: valueOrDefault
});
function binarySearch(metaset, axis, value, intersect) {
const { controller , data , _sorted } = metaset;
const iScale = controller._cachedMeta.iScale;
if (iScale && axis === iScale.axis && axis !== 'r' && _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 evaluateInteractionItems(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, includeInvisible) {
const items = [];
if (!includeInvisible && !chart.isPointInArea(position)) {
return items;
}
const evaluationFunc = function(element, datasetIndex, index) {
if (!includeInvisible && !_isPointInArea(element, chart.chartArea, 0)) {
return;
}
if (element.inRange(position.x, position.y, useFinalPosition)) {
items.push({
element,
datasetIndex,
index
});
}
};
evaluateInteractionItems(chart, axis, position, evaluationFunc, true);
return items;
}
function getNearestRadialItems(chart, position, axis, useFinalPosition) {
let items = [];
function evaluationFunc(element, datasetIndex, index) {
const { startAngle , endAngle } = element.getProps([
'startAngle',
'endAngle'
], useFinalPosition);
const { angle } = getAngleFromPoint(element, {
x: position.x,
y: position.y
});
if (_angleBetween(angle, startAngle, endAngle)) {
items.push({
element,
datasetIndex,
index
});
}
}
evaluateInteractionItems(chart, axis, position, evaluationFunc);
return items;
}
function getNearestCartesianItems(chart, position, axis, intersect, useFinalPosition, includeInvisible) {
let items = [];
const distanceMetric = getDistanceMetricForAxis(axis);
let minDistance = Number.POSITIVE_INFINITY;
function evaluationFunc(element, datasetIndex, index) {
const inRange = element.inRange(position.x, position.y, useFinalPosition);
if (intersect && !inRange) {
return;
}
const center = element.getCenterPoint(useFinalPosition);
const pointInArea = !!includeInvisible || chart.isPointInArea(center);
if (!pointInArea && !inRange) {
return;
}
const distance = distanceMetric(position, center);
if (distance < minDistance) {
items = [
{
element,
datasetIndex,
index
}
];
minDistance = distance;
} else if (distance === minDistance) {
items.push({
element,
datasetIndex,
index
});
}
}
evaluateInteractionItems(chart, axis, position, evaluationFunc);
return items;
}
function getNearestItems(chart, position, axis, intersect, useFinalPosition, includeInvisible) {
if (!includeInvisible && !chart.isPointInArea(position)) {
return [];
}
return axis === 'r' && !intersect ? getNearestRadialItems(chart, position, axis, useFinalPosition) : getNearestCartesianItems(chart, position, axis, intersect, useFinalPosition, includeInvisible);
}
function getAxisItems(chart, position, axis, intersect, useFinalPosition) {
const items = [];
const rangeMethod = axis === 'x' ? 'inXRange' : 'inYRange';
let intersectsItem = false;
evaluateInteractionItems(chart, axis, position, (element, datasetIndex, index)=>{
if (element[rangeMethod](position[axis], useFinalPosition)) {
items.push({
element,
datasetIndex,
index
});
intersectsItem = intersectsItem || element.inRange(position.x, position.y, useFinalPosition);
}
});
if (intersect && !intersectsItem) {
return [];
}
return items;
}
var Interaction = {
evaluateInteractionItems,
modes: {
index (chart, e, options, useFinalPosition) {
const position = getRelativePosition(e, chart);
const axis = options.axis || 'x';
const includeInvisible = options.includeInvisible || false;
const items = options.intersect ? getIntersectItems(chart, position, axis, useFinalPosition, includeInvisible) : getNearestItems(chart, position, axis, false, useFinalPosition, includeInvisible);
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';
const includeInvisible = options.includeInvisible || false;
let items = options.intersect ? getIntersectItems(chart, position, axis, useFinalPosition, includeInvisible) : getNearestItems(chart, position, axis, false, useFinalPosition, includeInvisible);
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';
const includeInvisible = options.includeInvisible || false;
return getIntersectItems(chart, position, axis, useFinalPosition, includeInvisible);
},
nearest (chart, e, options, useFinalPosition) {
const position = getRelativePosition(e, chart);
const axis = options.axis || 'xy';
const includeInvisible = options.includeInvisible || false;
return getNearestItems(chart, position, axis, options.intersect, useFinalPosition, includeInvisible);
},
x (chart, e, options, useFinalPosition) {
const position = getRelativePosition(e, chart);
return getAxisItems(chart, position, 'x', options.intersect, useFinalPosition);
},
y (chart, e, options, useFinalPosition) {
const position = getRelativePosition(e, chart);
return getAxisItems(chart, position, 'y', options.intersect, useFinalPosition);
}
}
};
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;
}
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, {
left: 0,
top: 0,
right: 0,
bottom: 0
});
});
}
};
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;
}
updateConfig(config) {
}
}
class BasicPlatform extends BasePlatform {
acquireContext(item) {
return item && item.getContext && item.getContext('2d') || null;
}
updateConfig(config) {
config.options.animation = false;
}
}
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) {
if (node) {
node.addEventListener(type, listener, eventListenerOptions);
}
}
function removeListener(chart, type, listener) {
if (chart && chart.canvas) {
chart.canvas.removeEventListener(type, listener, eventListenerOptions);
}
}
function fromNativeEvent(event, chart) {
const type = EVENT_TYPES[event.type] || event.type;
const { x , y } = getRelativePosition(event, chart);
return {
type,
chart,
native: event,
x: x !== undefined ? x : null,
y: y !== undefined ? y : null
};
}
function nodeListContains(nodeList, canvas) {
for (const node of nodeList){
if (node === canvas || node.contains(canvas)) {
return true;
}
}
}
function createAttachObserver(chart, type, listener) {
const canvas = chart.canvas;
const observer = new MutationObserver((entries)=>{
let trigger = false;
for (const entry of entries){
trigger = trigger || nodeListContains(entry.addedNodes, canvas);
trigger = trigger && !nodeListContains(entry.removedNodes, canvas);
}
if (trigger) {
listener();
}
});
observer.observe(document, {
childList: true,
subtree: true
});
return observer;
}
function createDetachObserver(chart, type, listener) {
const canvas = chart.canvas;
const observer = new MutationObserver((entries)=>{
let trigger = false;
for (const entry of entries){
trigger = trigger || nodeListContains(entry.removedNodes, canvas);
trigger = trigger && !nodeListContains(entry.addedNodes, canvas);
}
if (trigger) {
listener();
}
});
observer.observe(document, {
childList: true,
subtree: 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);
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,
BasePlatform: BasePlatform,
BasicPlatform: BasicPlatform,
DomPlatform: DomPlatform,
_detectPlatform: _detectPlatform
});
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) {
if (this._active) {
this._notify(false);
const currentValue = this._target[this._prop];
const elapsed = date - this._start;
const remain = this._duration - elapsed;
this._start = date;
this._duration = Math.floor(Math.max(remain, cfg.duration));
this._total += elapsed;
this._loop = !!cfg.loop;
this._to = resolve([
cfg.to,
to,
currentValue,
cfg.from
]);
this._from = resolve([
cfg.from,
currentValue,
to
]);
}
}
cancel() {
if (this._active) {
this.tick(Date.now());
this._active = false;
this._notify(false);
}
}
tick(date) {
const elapsed = date - this._start;
const duration = this._duration;
const prop = this._prop;
const from = this._from;
const loop = this._loop;
const to = this._to;
let factor;
this._active = from !== to && (loop || elapsed < duration);
if (!this._active) {
this._target[prop] = to;
this._notify(true);
return;
}
if (elapsed < 0) {
this._target[prop] = from;
return;
}
factor = elapsed / duration % 2;
factor = loop && factor > 1 ? 2 - factor : factor;
factor = this._easing(Math.min(1, Math.max(0, factor)));
this._target[prop] = this._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]();
}
}
}
class Animations {
constructor(chart, config){
this._chart = chart;
this._properties = new Map();
this.configure(config);
}
configure(config) {
if (!isObject(config)) {
return;
}
const animationOptions = Object.keys(defaults.animation);
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, type) {
for (const meta of vScale.getMatchingVisibleMetas(type).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, meta.type);
stack._bottom = getLastIndexInStack(stack, vScale, false, meta.type);
const visualValues = stack._visualValues || (stack._visualValues = {});
visualValues[datasetIndex] = value;
}
}
function getFirstScaleId(chart, axis) {
const scales = chart.scales;
return Object.keys(scales).filter((key)=>scales[key].axis === axis).shift();
}
function createDatasetContext(parent, index) {
return createContext(parent, {
active: false,
dataset: undefined,
datasetIndex: index,
index,
mode: 'default',
type: 'dataset'
});
}
function createDataContext(parent, index, element) {
return createContext(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];
if (stacks[axis]._visualValues !== undefined && stacks[axis]._visualValues[datasetIndex] !== undefined) {
delete stacks[axis]._visualValues[datasetIndex];
}
}
}
const isDirectUpdateMode = (mode)=>mode === 'reset' || mode === 'none';
const cloneIfNotShared = (cached, shared)=>shared ? cached : Object.assign({}, cached);
const createStack = (canStack, meta, chart)=>canStack && !meta.hidden && meta._stacked && {
keys: getSortedDatasetIndices(chart, true),
values: null
};
class DatasetController {
static defaults = {};
static datasetElementType = null;
static dataElementType = null;
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.supportsDecimation = false;
this.$context = undefined;
this._syncList = [];
this.datasetElementType = new.target.datasetElementType;
this.dataElementType = new.target.dataElementType;
this.initialize();
}
initialize() {
const meta = this._cachedMeta;
this.configure();
this.linkScales();
meta._stacked = isStacked(meta.vScale, meta);
this.addElements();
if (this.options.fill && !this.chart.isPluginEnabled('filler')) {
console.warn("Tried to use the 'fill' option without the 'Filler' plugin enabled. Please import and register the 'Filler' plugin and make sure it is not disabled in the options");
}
}
updateIndex(datasetIndex) {
if (this.index !== datasetIndex) {
clearStacks(this._cachedMeta);
}
this.index = datasetIndex;
}
linkScales() {
const chart = this.chart;
const meta = this._cachedMeta;
const dataset = this.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 = this.getScaleForId(xid);
meta.yScale = this.getScaleForId(yid);
meta.rScale = this.getScaleForId(rid);
meta.iScale = this.getScaleForId(iid);
meta.vScale = this.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 dataset = this.getDataset();
const data = dataset.data || (dataset.data = []);
const _data = this._data;
if (isObject(data)) {
this._data = convertObjectDataToArray(data);
} else if (_data !== data) {
if (_data) {
unlistenArrayEvents(_data, this);
const meta = this._cachedMeta;
clearStacks(meta);
meta._parsed = [];
}
if (data && Object.isExtensible(data)) {
listenArrayEvents(data, this);
}
this._syncList = [];
this._data = data;
}
}
addElements() {
const meta = this._cachedMeta;
this._dataCheck();
if (this.datasetElementType) {
meta.dataset = new this.datasetElementType();
}
}
buildOrUpdateElements(resetNewElements) {
const meta = this._cachedMeta;
const dataset = this.getDataset();
let stackChanged = false;
this._dataCheck();
const oldStacked = meta._stacked;
meta._stacked = isStacked(meta.vScale, meta);
if (meta.stack !== dataset.stack) {
stackChanged = true;
clearStacks(meta);
meta.stack = dataset.stack;
}
this._resyncElements(resetNewElements);
if (stackChanged || oldStacked !== meta._stacked) {
updateStacks(this, meta._parsed);
}
}
configure() {
const config = this.chart.config;
const scopeKeys = config.datasetScopeKeys(this._type);
const scopes = config.getOptionScopes(this.getDataset(), scopeKeys, true);
this.options = config.createResolver(scopes, this.getContext());
this._parsing = this.options.parsing;
this._cachedDataOpts = {};
}
parse(start, count) {
const { _cachedMeta: meta , _data: data } = this;
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 (this._parsing === false) {
meta._parsed = data;
meta._sorted = true;
parsed = data;
} else {
if (isArray(data[start])) {
parsed = this.parseArrayData(meta, data, start, count);
} else if (isObject(data[start])) {
parsed = this.parseObjectData(meta, data, start, count);
} else {
parsed = this.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(this, 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]._visualValues
};
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;
value = applyStack(stack, parsedValue, this._cachedMeta.index);
}
range.min = Math.min(range.min, value);
range.max = Math.max(range.max, value);
}
getMinMax(scale, canStack) {
const meta = this._cachedMeta;
const _parsed = meta._parsed;
const sorted = meta._sorted && scale === meta.iScale;
const ilen = _parsed.length;
const otherScale = this._getOtherScale(scale);
const stack = createStack(canStack, meta, this.chart);
const range = {
min: Number.POSITIVE_INFINITY,
max: Number.NEGATIVE_INFINITY
};
const { min: otherMin , max: otherMax } = getUserBounds(otherScale);
let i, parsed;
function _skip() {
parsed = _parsed[i];
const otherValue = parsed[otherScale.axis];
return !isNumberFinite(parsed[scale.axis]) || otherMin > otherValue || otherMax < otherValue;
}
for(i = 0; i < ilen; ++i){
if (_skip()) {
continue;
}
this.updateRangeFromParsed(range, scale, parsed, stack);
if (sorted) {
break;
}
}
if (sorted) {
for(i = ilen - 1; i >= 0; --i){
if (_skip()) {
continue;
}
this.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 meta = this._cachedMeta;
const iScale = meta.iScale;
const vScale = meta.vScale;
const parsed = this.getParsed(index);
return {
label: iScale ? '' + iScale.getLabelForValue(parsed[iScale.axis]) : '',
value: vScale ? '' + vScale.getLabelForValue(parsed[vScale.axis]) : ''
};
}
_update(mode) {
const meta = this._cachedMeta;
this.update(mode || 'default');
meta._clip = toClip(valueOrDefault(this.options.clip, defaultClip(meta.xScale, meta.yScale, this.getMaxOverflow())));
}
update(mode) {}
draw() {
const ctx = this._ctx;
const chart = this.chart;
const meta = this._cachedMeta;
const elements = meta.data || [];
const area = chart.chartArea;
const active = [];
const start = this._drawStart || 0;
const count = this._drawCount || elements.length - start;
const drawActiveElementsOnTop = this.options.drawActiveElementsOnTop;
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 && drawActiveElementsOnTop) {
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 dataset = this.getDataset();
let context;
if (index >= 0 && index < this._cachedMeta.data.length) {
const element = this._cachedMeta.data[index];
context = element.$context || (element.$context = createDataContext(this.getContext(), index, element));
context.parsed = this.getParsed(index);
context.raw = dataset.data[index];
context.index = context.dataIndex = index;
} else {
context = this.$context || (this.$context = createDatasetContext(this.chart.getContext(), this.index));
context.dataset = dataset;
context.index = context.datasetIndex = this.index;
}
context.active = !!active;
context.mode = mode;
return context;
}
resolveDatasetElementOptions(mode) {
return this._resolveElementOptions(this.datasetElementType.id, mode);
}
resolveDataElementOptions(index, mode) {
return this._resolveElementOptions(this.dataElementType.id, mode, index);
}
_resolveElementOptions(elementType, mode = 'default', index) {
const active = mode === 'active';
const cache = this._cachedDataOpts;
const cacheKey = elementType + '-' + mode;
const cached = cache[cacheKey];
const sharing = this.enableOptionSharing && defined(index);
if (cached) {
return cloneIfNotShared(cached, sharing);
}
const config = this.chart.config;
const scopeKeys = config.datasetElementScopeKeys(this._type, elementType);
const prefixes = active ? [
`${elementType}Hover`,
'hover',
elementType,
''
] : [
elementType,
''
];
const scopes = config.getOptionScopes(this.getDataset(), scopeKeys);
const names = Object.keys(defaults.elements[elementType]);
const context = ()=>this.getContext(index, active, mode);
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 chart = this.chart;
const cache = this._cachedDataOpts;
const cacheKey = `animation-${transition}`;
const cached = cache[cacheKey];
if (cached) {
return cached;
}
let options;
if (chart.options.animation !== false) {
const config = this.chart.config;
const scopeKeys = config.datasetAnimationScopeKeys(this._type, transition);
const scopes = config.getOptionScopes(this.getDataset(), scopeKeys);
options = config.createResolver(scopes, this.getContext(index, active, transition));
}
const animations = new Animations(chart, options && options.animations);
if (options && options._cacheable) {
cache[cacheKey] = Object.freeze(animations);
}
return animations;
}
getSharedOptions(options) {
if (!options.$shared) {
return;
}
return this._sharedOptions || (this._sharedOptions = Object.assign({}, options));
}
includeOptions(mode, sharedOptions) {
return !sharedOptions || isDirectUpdateMode(mode) || this.chart._animationsDisabled;
}
_getSharedOptions(start, mode) {
const firstOpts = this.resolveDataElementOptions(start, mode);
const previouslySharedOptions = this._sharedOptions;
const sharedOptions = this.getSharedOptions(firstOpts);
const includeOptions = this.includeOptions(mode, sharedOptions) || sharedOptions !== previouslySharedOptions;
this.updateSharedOptions(sharedOptions, mode, firstOpts);
return {
sharedOptions,
includeOptions
};
}
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 data = this._data;
const elements = this._cachedMeta.data;
for (const [method, arg1, arg2] of this._syncList){
this[method](arg1, arg2);
}
this._syncList = [];
const numMeta = elements.length;
const numData = data.length;
const count = Math.min(numData, numMeta);
if (count) {
this.parse(0, count);
}
if (numData > numMeta) {
this._insertElements(numMeta, numData - numMeta, resetNewElements);
} else if (numData < numMeta) {
this._removeElements(numData, numMeta - numData);
}
}
_insertElements(start, count, resetNewElements = true) {
const meta = this._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 this.dataElementType();
}
if (this._parsing) {
move(meta._parsed);
}
this.parse(start, count);
if (resetNewElements) {
this.updateElements(data, start, count, 'reset');
}
}
updateElements(element, start, count, mode) {}
_removeElements(start, count) {
const meta = this._cachedMeta;
if (this._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);
}
this.chart._dataChanges.push([
this.index,
...args
]);
}
_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) {
if (count) {
this._sync([
'_removeElements',
start,
count
]);
}
const newCount = arguments.length - 2;
if (newCount) {
this._sync([
'_insertElements',
start,
newCount
]);
}
}
_onDataUnshift() {
this._sync([
'_insertElements',
0,
arguments.length
]);
}
}
class Element {
static defaults = {};
static defaultRoutes = undefined;
x;
y;
active = false;
options;
$animations;
tooltipPosition(useFinalPosition) {
const { x , y } = this.getProps([
'x',
'y'
], useFinalPosition);
return {
x,
y
};
}
hasValue() {
return isNumber(this.x) && isNumber(this.y);
}
getProps(props, final) {
const anims = this.$animations;
if (!final || !anims) {
// let's not create an object, if not needed
return this;
}
const ret = {};
props.forEach((prop)=>{
ret[prop] = anims[prop] && anims[prop].active() ? anims[prop]._to : this[prop];
});
return ret;
}
}
function autoSkip(scale, ticks) {
const tickOpts = scale.options.ticks;
const determinedMaxTicks = determineMaxTicks(scale);
const ticksLimit = Math.min(tickOpts.maxTicksLimit || determinedMaxTicks, determinedMaxTicks);
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;
const getTicksLimit = (ticksLength, maxTicksLimit)=>Math.min(maxTicksLimit || ticksLength, ticksLength);
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 createContext(parent, {
scale,
type: 'scale'
});
}
function createTickContext(parent, index, tick) {
return createContext(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) {
this.options = options.setContext(this.getContext());
this.axis = options.axis;
this._userMin = this.parse(options.min);
this._userMax = this.parse(options.max);
this._suggestedMin = this.parse(options.suggestedMin);
this._suggestedMax = this.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) {
let { min , max , minDefined , maxDefined } = this.getUserBounds();
let range;
if (minDefined && maxDefined) {
return {
min,
max
};
}
const metas = this.getMatchingVisibleMetas();
for(let i = 0, ilen = metas.length; i < ilen; ++i){
range = metas[i].controller.getMinMax(this, canStack);
if (!minDefined) {
min = Math.min(min, range.min);
}
if (!maxDefined) {
max = Math.max(max, range.max);
}
}
min = maxDefined && min > max ? max : min;
max = minDefined && min > max ? min : max;
return {
min: finiteOrDefault(min, finiteOrDefault(max, min)),
max: finiteOrDefault(max, finiteOrDefault(min, max))
};
}
getPadding() {
return {
left: this.paddingLeft || 0,
top: this.paddingTop || 0,
right: this.paddingRight || 0,
bottom: this.paddingBottom || 0
};
}
getTicks() {
return this.ticks;
}
getLabels() {
const data = this.chart.data;
return this.options.labels || (this.isHorizontal() ? data.xLabels : data.yLabels) || data.labels || [];
}
getLabelItems(chartArea = this.chart.chartArea) {
const items = this._labelItems || (this._labelItems = this._computeLabelItems(chartArea));
return items;
}
beforeLayout() {
this._cache = {};
this._dataLimitsCached = false;
}
beforeUpdate() {
callback(this.options.beforeUpdate, [
this
]);
}
update(maxWidth, maxHeight, margins) {
const { beginAtZero , grace , ticks: tickOpts } = this.options;
const sampleSize = tickOpts.sampleSize;
this.beforeUpdate();
this.maxWidth = maxWidth;
this.maxHeight = maxHeight;
this._margins = margins = Object.assign({
left: 0,
right: 0,
top: 0,
bottom: 0
}, margins);
this.ticks = null;
this._labelSizes = null;
this._gridLineItems = null;
this._labelItems = null;
this.beforeSetDimensions();
this.setDimensions();
this.afterSetDimensions();
this._maxLength = this.isHorizontal() ? this.width + margins.left + margins.right : this.height + margins.top + margins.bottom;
if (!this._dataLimitsCached) {
this.beforeDataLimits();
this.determineDataLimits();
this.afterDataLimits();
this._range = _addGrace(this, grace, beginAtZero);
this._dataLimitsCached = true;
}
this.beforeBuildTicks();
this.ticks = this.buildTicks() || [];
this.afterBuildTicks();
const samplingEnabled = sampleSize < this.ticks.length;
this._convertTicksToLabels(samplingEnabled ? sample(this.ticks, sampleSize) : this.ticks);
this.configure();
this.beforeCalculateLabelRotation();
this.calculateLabelRotation();
this.afterCalculateLabelRotation();
if (tickOpts.display && (tickOpts.autoSkip || tickOpts.source === 'auto')) {
this.ticks = autoSkip(this, this.ticks);
this._labelSizes = null;
this.afterAutoSkip();
}
if (samplingEnabled) {
this._convertTicksToLabels(this.ticks);
}
this.beforeFit();
this.fit();
this.afterFit();
this.afterUpdate();
}
configure() {
let reversePixels = this.options.reverse;
let startPixel, endPixel;
if (this.isHorizontal()) {
startPixel = this.left;
endPixel = this.right;
} else {
startPixel = this.top;
endPixel = this.bottom;
reversePixels = !reversePixels;
}
this._startPixel = startPixel;
this._endPixel = endPixel;
this._reversePixels = reversePixels;
this._length = endPixel - startPixel;
this._alignToPixels = this.options.alignToPixels;
}
afterUpdate() {
callback(this.options.afterUpdate, [
this
]);
}
beforeSetDimensions() {
callback(this.options.beforeSetDimensions, [
this
]);
}
setDimensions() {
if (this.isHorizontal()) {
this.width = this.maxWidth;
this.left = 0;
this.right = this.width;
} else {
this.height = this.maxHeight;
this.top = 0;
this.bottom = this.height;
}
this.paddingLeft = 0;
this.paddingTop = 0;
this.paddingRight = 0;
this.paddingBottom = 0;
}
afterSetDimensions() {
callback(this.options.afterSetDimensions, [
this
]);
}
_callHooks(name) {
this.chart.notifyPlugins(name, this.getContext());
callback(this.options[name], [
this
]);
}
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 tickOpts = this.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
], this);
}
}
afterTickToLabelConversion() {
callback(this.options.afterTickToLabelConversion, [
this
]);
}
beforeCalculateLabelRotation() {
callback(this.options.beforeCalculateLabelRotation, [
this
]);
}
calculateLabelRotation() {
const options = this.options;
const tickOpts = options.ticks;
const numTicks = getTicksLimit(this.ticks.length, options.ticks.maxTicksLimit);
const minRotation = tickOpts.minRotation || 0;
const maxRotation = tickOpts.maxRotation;
let labelRotation = minRotation;
let tickWidth, maxHeight, maxLabelDiagonal;
if (!this._isVisible() || !tickOpts.display || minRotation >= maxRotation || numTicks <= 1 || !this.isHorizontal()) {
this.labelRotation = minRotation;
return;
}
const labelSizes = this._getLabelSizes();
const maxLabelWidth = labelSizes.widest.width;
const maxLabelHeight = labelSizes.highest.height;
const maxWidth = _limitValue(this.chart.width - maxLabelWidth, 0, this.maxWidth);
tickWidth = options.offset ? this.maxWidth / numTicks : maxWidth / (numTicks - 1);
if (maxLabelWidth + 6 > tickWidth) {
tickWidth = maxWidth / (numTicks - (options.offset ? 0.5 : 1));
maxHeight = this.maxHeight - getTickMarkLength(options.grid) - tickOpts.padding - getTitleHeight(options.title, this.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));
}
this.labelRotation = labelRotation;
}
afterCalculateLabelRotation() {
callback(this.options.afterCalculateLabelRotation, [
this
]);
}
afterAutoSkip() {}
beforeFit() {
callback(this.options.beforeFit, [
this
]);
}
fit() {
const minSize = {
width: 0,
height: 0
};
const { chart , options: { ticks: tickOpts , title: titleOpts , grid: gridOpts } } = this;
const display = this._isVisible();
const isHorizontal = this.isHorizontal();
if (display) {
const titleHeight = getTitleHeight(titleOpts, chart.options.font);
if (isHorizontal) {
minSize.width = this.maxWidth;
minSize.height = getTickMarkLength(gridOpts) + titleHeight;
} else {
minSize.height = this.maxHeight;
minSize.width = getTickMarkLength(gridOpts) + titleHeight;
}
if (tickOpts.display && this.ticks.length) {
const { first , last , widest , highest } = this._getLabelSizes();
const tickPadding = tickOpts.padding * 2;
const angleRadians = toRadians(this.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(this.maxHeight, minSize.height + labelHeight + tickPadding);
} else {
const labelWidth = tickOpts.mirror ? 0 : cos * widest.width + sin * highest.height;
minSize.width = Math.min(this.maxWidth, minSize.width + labelWidth + tickPadding);
}
this._calculatePadding(first, last, sin, cos);
}
}
this._handleMargins();
if (isHorizontal) {
this.width = this._length = chart.width - this._margins.left - this._margins.right;
this.height = minSize.height;
} else {
this.width = minSize.width;
this.height = this._length = chart.height - this._margins.top - this._margins.bottom;
}
}
_calculatePadding(first, last, sin, cos) {
const { ticks: { align , padding } , position } = this.options;
const isRotated = this.labelRotation !== 0;
const labelsBelowTicks = position !== 'top' && this.axis === 'x';
if (this.isHorizontal()) {
const offsetLeft = this.getPixelForTick(0) - this.left;
const offsetRight = this.right - this.getPixelForTick(this.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 if (align !== 'inner') {
paddingLeft = first.width / 2;
paddingRight = last.width / 2;
}
this.paddingLeft = Math.max((paddingLeft - offsetLeft + padding) * this.width / (this.width - offsetLeft), 0);
this.paddingRight = Math.max((paddingRight - offsetRight + padding) * this.width / (this.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;
}
this.paddingTop = paddingTop + padding;
this.paddingBottom = paddingBottom + padding;
}
}
_handleMargins() {
if (this._margins) {
this._margins.left = Math.max(this.paddingLeft, this._margins.left);
this._margins.top = Math.max(this.paddingTop, this._margins.top);
this._margins.right = Math.max(this.paddingRight, this._margins.right);
this._margins.bottom = Math.max(this.paddingBottom, this._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) {
this.beforeTickToLabelConversion();
this.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--;
}
}
this.afterTickToLabelConversion();
}
_getLabelSizes() {
let labelSizes = this._labelSizes;
if (!labelSizes) {
const sampleSize = this.options.ticks.sampleSize;
let ticks = this.ticks;
if (sampleSize < ticks.length) {
ticks = sample(ticks, sampleSize);
}
this._labelSizes = labelSizes = this._computeLabelSizes(ticks, ticks.length, this.options.ticks.maxTicksLimit);
}
return labelSizes;
}
_computeLabelSizes(ticks, length, maxTicksLimit) {
const { ctx , _longestTextCache: caches } = this;
const widths = [];
const heights = [];
const increment = Math.floor(length / getTicksLimit(length, maxTicksLimit));
let widestLabelSize = 0;
let highestLabelSize = 0;
let i, j, jlen, label, tickFont, fontString, cache, lineHeight, width, height, nestedLabel;
for(i = 0; i < length; i += increment){
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) {
if (this._reversePixels) {
decimal = 1 - decimal;
}
const pixel = this._startPixel + decimal * this._length;
return _int16Range(this._alignToPixels ? _alignPixel(this.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 ticks = this.ticks || [];
if (index >= 0 && index < ticks.length) {
const tick = ticks[index];
return tick.$context || (tick.$context = createTickContext(this.getContext(), index, tick));
}
return this.$context || (this.$context = createScaleContext(this.chart.getContext(), this));
}
_tickSize() {
const optionTicks = this.options.ticks;
const rot = toRadians(this.labelRotation);
const cos = Math.abs(Math.cos(rot));
const sin = Math.abs(Math.sin(rot));
const labelSizes = this._getLabelSizes();
const padding = optionTicks.autoSkipPadding || 0;
const w = labelSizes ? labelSizes.widest.width + padding : 0;
const h = labelSizes ? labelSizes.highest.height + padding : 0;
return this.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 axis = this.axis;
const chart = this.chart;
const options = this.options;
const { grid , position , border } = options;
const offset = grid.offset;
const isHorizontal = this.isHorizontal();
const ticks = this.ticks;
const ticksLength = ticks.length + (offset ? 1 : 0);
const tl = getTickMarkLength(grid);
const items = [];
const borderOpts = border.setContext(this.getContext());
const axisWidth = borderOpts.display ? borderOpts.width : 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(this.bottom);
ty1 = this.bottom - tl;
ty2 = borderValue - axisHalfWidth;
y1 = alignBorderValue(chartArea.top) + axisHalfWidth;
y2 = chartArea.bottom;
} else if (position === 'bottom') {
borderValue = alignBorderValue(this.top);
y1 = chartArea.top;
y2 = alignBorderValue(chartArea.bottom) - axisHalfWidth;
ty1 = borderValue + axisHalfWidth;
ty2 = this.top + tl;
} else if (position === 'left') {
borderValue = alignBorderValue(this.right);
tx1 = this.right - tl;
tx2 = borderValue - axisHalfWidth;
x1 = alignBorderValue(chartArea.left) + axisHalfWidth;
x2 = chartArea.right;
} else if (position === 'right') {
borderValue = alignBorderValue(this.left);
x1 = chartArea.left;
x2 = alignBorderValue(chartArea.right) - axisHalfWidth;
tx1 = borderValue + axisHalfWidth;
tx2 = this.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(this.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(this.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 context = this.getContext(i);
const optsAtIndex = grid.setContext(context);
const optsAtIndexBorder = border.setContext(context);
const lineWidth = optsAtIndex.lineWidth;
const lineColor = optsAtIndex.color;
const borderDash = optsAtIndexBorder.dash || [];
const borderDashOffset = optsAtIndexBorder.dashOffset;
const tickWidth = optsAtIndex.tickWidth;
const tickColor = optsAtIndex.tickColor;
const tickBorderDash = optsAtIndex.tickBorderDash || [];
const tickBorderDashOffset = optsAtIndex.tickBorderDashOffset;
lineValue = getPixelForGridLine(this, 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
});
}
this._ticksLength = ticksLength;
this._borderValue = borderValue;
return items;
}
_computeLabelItems(chartArea) {
const axis = this.axis;
const options = this.options;
const { position , ticks: optionTicks } = options;
const isHorizontal = this.isHorizontal();
const ticks = this.ticks;
const { align , crossAlign , padding , mirror } = optionTicks;
const tl = getTickMarkLength(options.grid);
const tickAndPadding = tl + padding;
const hTickAndPadding = mirror ? -padding : tickAndPadding;
const rotation = -toRadians(this.labelRotation);
const items = [];
let i, ilen, tick, label, x, y, textAlign, pixel, font, lineHeight, lineCount, textOffset;
let textBaseline = 'middle';
if (position === 'top') {
y = this.bottom - hTickAndPadding;
textAlign = this._getXAxisLabelAlignment();
} else if (position === 'bottom') {
y = this.top + hTickAndPadding;
textAlign = this._getXAxisLabelAlignment();
} else if (position === 'left') {
const ret = this._getYAxisLabelAlignment(tl);
textAlign = ret.textAlign;
x = ret.x;
} else if (position === 'right') {
const ret = this._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 = this.chart.scales[positionAxisID].getPixelForValue(value) + tickAndPadding;
}
textAlign = this._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 = this.chart.scales[positionAxisID].getPixelForValue(value);
}
textAlign = this._getYAxisLabelAlignment(tl).textAlign;
}
if (axis === 'y') {
if (align === 'start') {
textBaseline = 'top';
} else if (align === 'end') {
textBaseline = 'bottom';
}
}
const labelSizes = this._getLabelSizes();
for(i = 0, ilen = ticks.length; i < ilen; ++i){
tick = ticks[i];
label = tick.label;
const optsAtIndex = optionTicks.setContext(this.getContext(i));
pixel = this.getPixelForTick(i) + optionTicks.labelOffset;
font = this._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;
let tickTextAlign = textAlign;
if (isHorizontal) {
x = pixel;
if (textAlign === 'inner') {
if (i === ilen - 1) {
tickTextAlign = !this.options.reverse ? 'right' : 'left';
} else if (i === 0) {
tickTextAlign = !this.options.reverse ? 'left' : 'right';
} else {
tickTextAlign = 'center';
}
}
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;
}
if (rotation !== 0 && !optsAtIndex.showLabelBackdrop) {
x += lineHeight / 2 * Math.sin(rotation);
}
} 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 = textOffset - labelPadding.top;
let left = 0 - 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;
case 'inner':
if (i === ilen - 1) {
left -= width;
} else if (i > 0) {
left -= width / 2;
}
break;
}
backdrop = {
left,
top,
width: width + labelPadding.width,
height: height + labelPadding.height,
color: optsAtIndex.backdropColor
};
}
items.push({
label,
font,
textOffset,
options: {
rotation,
color,
strokeColor,
strokeWidth,
textAlign: tickTextAlign,
textBaseline,
translation: [
x,
y
],
backdrop
}
});
}
return items;
}
_getXAxisLabelAlignment() {
const { position , ticks } = this.options;
const rotation = -toRadians(this.labelRotation);
if (rotation) {
return position === 'top' ? 'left' : 'right';
}
let align = 'center';
if (ticks.align === 'start') {
align = 'left';
} else if (ticks.align === 'end') {
align = 'right';
} else if (ticks.align === 'inner') {
align = 'inner';
}
return align;
}
_getYAxisLabelAlignment(tl) {
const { position , ticks: { crossAlign , mirror , padding } } = this.options;
const labelSizes = this._getLabelSizes();
const tickAndPadding = tl + padding;
const widest = labelSizes.widest.width;
let textAlign;
let x;
if (position === 'left') {
if (mirror) {
x = this.right + padding;
if (crossAlign === 'near') {
textAlign = 'left';
} else if (crossAlign === 'center') {
textAlign = 'center';
x += widest / 2;
} else {
textAlign = 'right';
x += widest;
}
} else {
x = this.right - tickAndPadding;
if (crossAlign === 'near') {
textAlign = 'right';
} else if (crossAlign === 'center') {
textAlign = 'center';
x -= widest / 2;
} else {
textAlign = 'left';
x = this.left;
}
}
} else if (position === 'right') {
if (mirror) {
x = this.left + padding;
if (crossAlign === 'near') {
textAlign = 'right';
} else if (crossAlign === 'center') {
textAlign = 'center';
x -= widest / 2;
} else {
textAlign = 'left';
x -= widest;
}
} else {
x = this.left + tickAndPadding;
if (crossAlign === 'near') {
textAlign = 'left';
} else if (crossAlign === 'center') {
textAlign = 'center';
x += widest / 2;
} else {
textAlign = 'right';
x = this.right;
}
}
} else {
textAlign = 'right';
}
return {
textAlign,
x
};
}
_computeLabelArea() {
if (this.options.ticks.mirror) {
return;
}
const chart = this.chart;
const position = this.options.position;
if (position === 'left' || position === 'right') {
return {
top: 0,
left: this.left,
bottom: chart.height,
right: this.right
};
}
if (position === 'top' || position === 'bottom') {
return {
top: this.top,
left: 0,
bottom: this.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 grid = this.options.grid;
if (!this._isVisible() || !grid.display) {
return 0;
}
const ticks = this.ticks;
const index = ticks.findIndex((t)=>t.value === value);
if (index >= 0) {
const opts = grid.setContext(this.getContext(index));
return opts.lineWidth;
}
return 0;
}
drawGrid(chartArea) {
const grid = this.options.grid;
const ctx = this.ctx;
const items = this._gridLineItems || (this._gridLineItems = this._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 { chart , ctx , options: { border , grid } } = this;
const borderOpts = border.setContext(this.getContext());
const axisWidth = border.display ? borderOpts.width : 0;
if (!axisWidth) {
return;
}
const lastLineWidth = grid.setContext(this.getContext(0)).lineWidth;
const borderValue = this._borderValue;
let x1, x2, y1, y2;
if (this.isHorizontal()) {
x1 = _alignPixel(chart, this.left, axisWidth) - axisWidth / 2;
x2 = _alignPixel(chart, this.right, lastLineWidth) + lastLineWidth / 2;
y1 = y2 = borderValue;
} else {
y1 = _alignPixel(chart, this.top, axisWidth) - axisWidth / 2;
y2 = _alignPixel(chart, this.bottom, lastLineWidth) + lastLineWidth / 2;
x1 = x2 = borderValue;
}
ctx.save();
ctx.lineWidth = borderOpts.width;
ctx.strokeStyle = borderOpts.color;
ctx.beginPath();
ctx.moveTo(x1, y1);
ctx.lineTo(x2, y2);
ctx.stroke();
ctx.restore();
}
drawLabels(chartArea) {
const optionTicks = this.options.ticks;
if (!optionTicks.display) {
return;
}
const ctx = this.ctx;
const area = this._computeLabelArea();
if (area) {
clipArea(ctx, area);
}
const items = this.getLabelItems(chartArea);
for (const item of items){
const renderTextOptions = item.options;
const tickFont = item.font;
const label = item.label;
const y = item.textOffset;
renderText(ctx, label, 0, y, tickFont, renderTextOptions);
}
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) {
if (!this._isVisible()) {
return;
}
this.drawBackground();
this.drawGrid(chartArea);
this.drawBorder();
this.drawTitle();
this.drawLabels(chartArea);
}
_layers() {
const opts = this.options;
const tz = opts.ticks && opts.ticks.z || 0;
const gz = valueOrDefault(opts.grid && opts.grid.z, -1);
const bz = valueOrDefault(opts.border && opts.border.z, 0);
if (!this._isVisible() || this.draw !== Scale.prototype.draw) {
return [
{
z: tz,
draw: (chartArea)=>{
this.draw(chartArea);
}
}
];
}
return [
{
z: gz,
draw: (chartArea)=>{
this.drawBackground();
this.drawGrid(chartArea);
this.drawTitle();
}
},
{
z: bz,
draw: ()=>{
this.drawBorder();
}
},
{
z: tz,
draw: (chartArea)=>{
this.drawLabels(chartArea);
}
}
];
}
getMatchingVisibleMetas(type) {
const metas = this.chart.getSortedVisibleDatasetMetas();
const axisID = this.axis + 'AxisID';
const result = [];
let i, ilen;
for(i = 0, ilen = metas.length; i < ilen; ++i){
const meta = metas[i];
if (meta[axisID] === this.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 fontSize = this._resolveTickFontOptions(0).lineHeight;
return (this.isHorizontal() ? this.width : this.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 proto = Object.getPrototypeOf(item);
let parentScope;
if (isIChartComponent(proto)) {
parentScope = this.register(proto);
}
const items = this.items;
const id = item.id;
const scope = this.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 (this.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) {
[
...args
].forEach((arg)=>{
const reg = typedRegistry || this._getRegistryForType(arg);
if (typedRegistry || reg.isForType(arg) || reg === this.plugins && arg.id) {
this._exec(method, reg, arg);
} else {
each(arg, (item)=>{
const itemReg = typedRegistry || this._getRegistryForType(item);
this._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 = /* #__PURE__ */ new Registry();
class PluginService {
constructor(){
this._init = [];
}
notify(chart, hook, args, filter) {
if (hook === 'beforeInit') {
this._init = this._createDescriptors(chart, true);
this._notify(this._init, chart, 'install');
}
const descriptors = filter ? this._descriptors(chart).filter(filter) : this._descriptors(chart);
const result = this._notify(descriptors, chart, hook, args);
if (hook === 'afterDestroy') {
this._notify(descriptors, chart, 'stop');
this._notify(this._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 localIds = {};
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);
localIds[plugin.id] = true;
}
}
return {
plugins,
localIds
};
}
function getOpts(options, all) {
if (!all && options === false) {
return null;
}
if (options === true) {
return {};
}
return options;
}
function createDescriptors(chart, { plugins , localIds }, options, all) {
const result = [];
const context = chart.getContext();
for (const plugin of plugins){
const id = plugin.id;
const opts = getOpts(options[id], all);
if (opts === null) {
continue;
}
result.push({
plugin,
options: pluginOpts(chart.config, {
plugin,
local: localIds[id]
}, opts, context)
});
}
return result;
}
function pluginOpts(config, { plugin , local }, opts, context) {
const keys = config.pluginScopeKeys(plugin);
const scopes = config.getOptionScopes(opts, keys);
if (local && plugin.defaults) {
scopes.push(plugin.defaults);
}
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 idMatchesAxis(id) {
if (id === 'x' || id === 'y' || id === 'r') {
return id;
}
}
function axisFromPosition(position) {
if (position === 'top' || position === 'bottom') {
return 'x';
}
if (position === 'left' || position === 'right') {
return 'y';
}
}
function determineAxis(id, ...scaleOptions) {
if (idMatchesAxis(id)) {
return id;
}
for (const opts of scaleOptions){
const axis = opts.axis || axisFromPosition(opts.position) || id.length > 1 && idMatchesAxis(id[0].toLowerCase());
if (axis) {
return axis;
}
}
throw new Error(`Cannot determine type of '${id}' axis. Please provide 'axis' or 'position' option.`);
}
function getAxisFromDataset(id, axis, dataset) {
if (dataset[axis + 'AxisID'] === id) {
return {
axis
};
}
}
function retrieveAxisFromDatasets(id, config) {
if (config.data && config.data.datasets) {
const boundDs = config.data.datasets.filter((d)=>d.xAxisID === id || d.yAxisID === id);
if (boundDs.length) {
return getAxisFromDataset(id, 'x', boundDs[0]) || getAxisFromDataset(id, 'y', boundDs[0]);
}
}
return {};
}
function mergeScaleConfig(config, options) {
const chartDefaults = overrides[config.type] || {
scales: {}
};
const configScales = options.scales || {};
const chartIndexAxis = getIndexAxis(config.type, options);
const scales = Object.create(null);
Object.keys(configScales).forEach((id)=>{
const scaleConf = configScales[id];
if (!isObject(scaleConf)) {
return console.error(`Invalid scale configuration for scale: ${id}`);
}
if (scaleConf._proxy) {
return console.warn(`Ignoring resolver passed as options for scale: ${id}`);
}
const axis = determineAxis(id, scaleConf, retrieveAxisFromDatasets(id, config), defaults.scales[scaleConf.type]);
const defaultId = getDefaultScaleIDFromAxis(axis, chartIndexAxis);
const defaultScaleOptions = chartDefaults.scales || {};
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'] || 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;
}
const hasFunction = (value)=>isObject(value) && Object.getOwnPropertyNames(value).some((key)=>isFunction(value[key]));
function needContext(proxy, names) {
const { isScriptable , isIndexable } = _descriptors(proxy);
for (const prop of names){
const scriptable = isScriptable(prop);
const indexable = isIndexable(prop);
const value = (indexable || scriptable) && proxy[prop];
if (scriptable && (isFunction(value) || hasFunction(value)) || indexable && isArray(value)) {
return true;
}
}
return false;
}
var version = "4.4.2";
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();
};
function moveNumericKeys(obj, start, move) {
const keys = Object.keys(obj);
for (const key of keys){
const intKey = +key;
if (intKey >= start) {
const value = obj[key];
delete obj[key];
if (move > 0 || intKey > start) {
obj[intKey + move] = value;
}
}
}
}
function determineLastEvent(e, lastEvent, inChartArea, isClick) {
if (!inChartArea || e.type === 'mouseout') {
return null;
}
if (isClick) {
return lastEvent;
}
return e;
}
function getSizeForArea(scale, chartArea, field) {
return scale.options.clip ? scale[field] : chartArea[field];
}
function getDatasetArea(meta, chartArea) {
const { xScale , yScale } = meta;
if (xScale && yScale) {
return {
left: getSizeForArea(xScale, chartArea, 'left'),
right: getSizeForArea(xScale, chartArea, 'right'),
top: getSizeForArea(yScale, chartArea, 'top'),
bottom: getSizeForArea(yScale, chartArea, 'bottom')
};
}
return chartArea;
}
class Chart {
static defaults = defaults;
static instances = instances;
static overrides = overrides;
static registry = registry;
static version = version;
static getChart = getChart;
static register(...items) {
registry.add(...items);
invalidatePlugins();
}
static unregister(...items) {
registry.remove(...items);
invalidatePlugins();
}
constructor(item, userConfig){
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 with ID \'' + existingChart.canvas.id + '\' can be reused.');
}
const options = config.createResolver(config.chartOptionScopes(), this.getContext());
this.platform = new (config.platform || _detectPlatform(initialCanvas))();
this.platform.updateConfig(config);
const context = this.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((mode)=>this.update(mode), options.resizeDelay || 0);
this._dataChanges = [];
instances[this.id] = this;
if (!context || !canvas) {
console.error("Failed to create chart: can't acquire context from the given item");
return;
}
animator.listen(this, 'complete', onAnimationsComplete);
animator.listen(this, 'progress', onAnimationProgress);
this._initialize();
if (this.attached) {
this.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;
}
get registry() {
return registry;
}
_initialize() {
this.notifyPlugins('beforeInit');
if (this.options.responsive) {
this.resize();
} else {
retinaScale(this, this.options.devicePixelRatio);
}
this.bindEvents();
this.notifyPlugins('afterInit');
return this;
}
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 options = this.options;
const canvas = this.canvas;
const aspectRatio = options.maintainAspectRatio && this.aspectRatio;
const newSize = this.platform.getMaximumSize(canvas, width, height, aspectRatio);
const newRatio = options.devicePixelRatio || this.platform.getDevicePixelRatio();
const mode = this.width ? 'resize' : 'attach';
this.width = newSize.width;
this.height = newSize.height;
this._aspectRatio = this.aspectRatio;
if (!retinaScale(this, newRatio, true)) {
return;
}
this.notifyPlugins('resize', {
size: newSize
});
callback(options.onResize, [
this,
newSize
], this);
if (this.attached) {
if (this._doResize(mode)) {
this.render();
}
}
}
ensureScalesHaveIDs() {
const options = this.options;
const scalesOptions = options.scales || {};
each(scalesOptions, (axisOptions, axisID)=>{
axisOptions.id = axisID;
});
}
buildOrUpdateScales() {
const options = this.options;
const scaleOpts = options.scales;
const scales = this.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: this.ctx,
chart: this
});
scales[scale.id] = scale;
}
scale.init(scaleOptions, options);
});
each(updated, (hasUpdated, id)=>{
if (!hasUpdated) {
delete scales[id];
}
});
each(scales, (scale)=>{
layouts.configure(this, scale, scale.options);
layouts.addBox(this, scale);
});
}
_updateMetasets() {
const metasets = this._metasets;
const numData = this.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){
this._destroyDatasetMeta(i);
}
metasets.splice(numData, numMeta - numData);
}
this._sortedMetasets = metasets.slice(0).sort(compare2Level('order', 'index'));
}
_removeUnreferencedMetasets() {
const { _metasets: metasets , data: { datasets } } = this;
if (metasets.length > datasets.length) {
delete this._stacks;
}
metasets.forEach((meta, index)=>{
if (datasets.filter((x)=>x === meta._dataset).length === 0) {
this._destroyDatasetMeta(index);
}
});
}
buildOrUpdateControllers() {
const newControllers = [];
const datasets = this.data.datasets;
let i, ilen;
this._removeUnreferencedMetasets();
for(i = 0, ilen = datasets.length; i < ilen; i++){
const dataset = datasets[i];
let meta = this.getDatasetMeta(i);
const type = dataset.type || this.config.type;
if (meta.type && meta.type !== type) {
this._destroyDatasetMeta(i);
meta = this.getDatasetMeta(i);
}
meta.type = type;
meta.indexAxis = dataset.indexAxis || getIndexAxis(type, this.options);
meta.order = dataset.order || 0;
meta.index = i;
meta.label = '' + dataset.label;
meta.visible = this.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, {
dataElementType: registry.getElement(dataElementType),
datasetElementType: datasetElementType && registry.getElement(datasetElementType)
});
meta.controller = new ControllerClass(this, i);
newControllers.push(meta.controller);
}
}
this._updateMetasets();
return newControllers;
}
_resetElements() {
each(this.data.datasets, (dataset, datasetIndex)=>{
this.getDatasetMeta(datasetIndex).controller.reset();
}, this);
}
reset() {
this._resetElements();
this.notifyPlugins('reset');
}
update(mode) {
const config = this.config;
config.update();
const options = this._options = config.createResolver(config.chartOptionScopes(), this.getContext());
const animsDisabled = this._animationsDisabled = !options.animation;
this._updateScales();
this._checkEventBindings();
this._updateHiddenIndices();
this._plugins.invalidate();
if (this.notifyPlugins('beforeUpdate', {
mode,
cancelable: true
}) === false) {
return;
}
const newControllers = this.buildOrUpdateControllers();
this.notifyPlugins('beforeElementsUpdate');
let minPadding = 0;
for(let i = 0, ilen = this.data.datasets.length; i < ilen; i++){
const { controller } = this.getDatasetMeta(i);
const reset = !animsDisabled && newControllers.indexOf(controller) === -1;
controller.buildOrUpdateElements(reset);
minPadding = Math.max(+controller.getMaxOverflow(), minPadding);
}
minPadding = this._minPadding = options.layout.autoPadding ? minPadding : 0;
this._updateLayout(minPadding);
if (!animsDisabled) {
each(newControllers, (controller)=>{
controller.reset();
});
}
this._updateDatasets(mode);
this.notifyPlugins('afterUpdate', {
mode
});
this._layers.sort(compare2Level('z', '_idx'));
const { _active , _lastEvent } = this;
if (_lastEvent) {
this._eventHandler(_lastEvent, true);
} else if (_active.length) {
this._updateHoverStyles(_active, _active, true);
}
this.render();
}
_updateScales() {
each(this.scales, (scale)=>{
layouts.removeBox(this, scale);
});
this.ensureScalesHaveIDs();
this.buildOrUpdateScales();
}
_checkEventBindings() {
const options = this.options;
const existingEvents = new Set(Object.keys(this._listeners));
const newEvents = new Set(options.events);
if (!setsEqual(existingEvents, newEvents) || !!this._responsiveListeners !== options.responsive) {
this.unbindEvents();
this.bindEvents();
}
}
_updateHiddenIndices() {
const { _hiddenIndices } = this;
const changes = this._getUniformDataChanges() || [];
for (const { method , start , count } of changes){
const move = method === '_removeElements' ? -count : count;
moveNumericKeys(_hiddenIndices, start, move);
}
}
_getUniformDataChanges() {
const _dataChanges = this._dataChanges;
if (!_dataChanges || !_dataChanges.length) {
return;
}
this._dataChanges = [];
const datasetCount = this.data.datasets.length;
const makeSet = (idx)=>new Set(_dataChanges.filter((c)=>c[0] === idx).map((c, i)=>i + ',' + c.splice(1).join(',')));
const changeSet = makeSet(0);
for(let i = 1; i < datasetCount; i++){
if (!setsEqual(changeSet, makeSet(i))) {
return;
}
}
return Array.from(changeSet).map((c)=>c.split(',')).map((a)=>({
method: a[1],
start: +a[2],
count: +a[3]
}));
}
_updateLayout(minPadding) {
if (this.notifyPlugins('beforeLayout', {
cancelable: true
}) === false) {
return;
}
layouts.update(this, this.width, this.height, minPadding);
const area = this.chartArea;
const noArea = area.width <= 0 || area.height <= 0;
this._layers = [];
each(this.boxes, (box)=>{
if (noArea && box.position === 'chartArea') {
return;
}
if (box.configure) {
box.configure();
}
this._layers.push(...box._layers());
}, this);
this._layers.forEach((item, index)=>{
item._idx = index;
});
this.notifyPlugins('afterLayout');
}
_updateDatasets(mode) {
if (this.notifyPlugins('beforeDatasetsUpdate', {
mode,
cancelable: true
}) === false) {
return;
}
for(let i = 0, ilen = this.data.datasets.length; i < ilen; ++i){
this.getDatasetMeta(i).controller.configure();
}
for(let i = 0, ilen = this.data.datasets.length; i < ilen; ++i){
this._updateDataset(i, isFunction(mode) ? mode({
datasetIndex: i
}) : mode);
}
this.notifyPlugins('afterDatasetsUpdate', {
mode
});
}
_updateDataset(index, mode) {
const meta = this.getDatasetMeta(index);
const args = {
meta,
index,
mode,
cancelable: true
};
if (this.notifyPlugins('beforeDatasetUpdate', args) === false) {
return;
}
meta.controller._update(mode);
args.cancelable = false;
this.notifyPlugins('afterDatasetUpdate', args);
}
render() {
if (this.notifyPlugins('beforeRender', {
cancelable: true
}) === false) {
return;
}
if (animator.has(this)) {
if (this.attached && !animator.running(this)) {
animator.start(this);
}
} else {
this.draw();
onAnimationsComplete({
chart: this
});
}
}
draw() {
let i;
if (this._resizeBeforeDraw) {
const { width , height } = this._resizeBeforeDraw;
this._resize(width, height);
this._resizeBeforeDraw = null;
}
this.clear();
if (this.width <= 0 || this.height <= 0) {
return;
}
if (this.notifyPlugins('beforeDraw', {
cancelable: true
}) === false) {
return;
}
const layers = this._layers;
for(i = 0; i < layers.length && layers[i].z <= 0; ++i){
layers[i].draw(this.chartArea);
}
this._drawDatasets();
for(; i < layers.length; ++i){
layers[i].draw(this.chartArea);
}
this.notifyPlugins('afterDraw');
}
_getSortedDatasetMetas(filterVisible) {
const metasets = this._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() {
if (this.notifyPlugins('beforeDatasetsDraw', {
cancelable: true
}) === false) {
return;
}
const metasets = this.getSortedVisibleDatasetMetas();
for(let i = metasets.length - 1; i >= 0; --i){
this._drawDataset(metasets[i]);
}
this.notifyPlugins('afterDatasetsDraw');
}
_drawDataset(meta) {
const ctx = this.ctx;
const clip = meta._clip;
const useClip = !clip.disabled;
const area = getDatasetArea(meta, this.chartArea);
const args = {
meta,
index: meta.index,
cancelable: true
};
if (this.notifyPlugins('beforeDatasetDraw', args) === false) {
return;
}
if (useClip) {
clipArea(ctx, {
left: clip.left === false ? 0 : area.left - clip.left,
right: clip.right === false ? this.width : area.right + clip.right,
top: clip.top === false ? 0 : area.top - clip.top,
bottom: clip.bottom === false ? this.height : area.bottom + clip.bottom
});
}
meta.controller.draw();
if (useClip) {
unclipArea(ctx);
}
args.cancelable = false;
this.notifyPlugins('afterDatasetDraw', args);
}
isPointInArea(point) {
return _isPointInArea(point, this.chartArea, this._minPadding);
}
getElementsAtEventForMode(e, mode, options, useFinalPosition) {
const method = Interaction.modes[mode];
if (typeof method === 'function') {
return method(this, e, options, useFinalPosition);
}
return [];
}
getDatasetMeta(datasetIndex) {
const dataset = this.data.datasets[datasetIndex];
const metasets = this._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 = createContext(null, {
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 mode = visible ? 'show' : 'hide';
const meta = this.getDatasetMeta(datasetIndex);
const anims = meta.controller._resolveAnimations(undefined, mode);
if (defined(dataIndex)) {
meta.data[dataIndex].hidden = !visible;
this.update();
} else {
this.setDatasetVisibility(datasetIndex, visible);
anims.update(meta, {
visible
});
this.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 meta = this._metasets[datasetIndex];
if (meta && meta.controller) {
meta.controller._destroy();
}
delete this._metasets[datasetIndex];
}
_stop() {
let i, ilen;
this.stop();
animator.remove(this);
for(i = 0, ilen = this.data.datasets.length; i < ilen; ++i){
this._destroyDatasetMeta(i);
}
}
destroy() {
this.notifyPlugins('beforeDestroy');
const { canvas , ctx } = this;
this._stop();
this.config.clearCache();
if (canvas) {
this.unbindEvents();
clearCanvas(canvas, ctx);
this.platform.releaseContext(ctx);
this.canvas = null;
this.ctx = null;
}
delete instances[this.id];
this.notifyPlugins('afterDestroy');
}
toBase64Image(...args) {
return this.canvas.toDataURL(...args);
}
bindEvents() {
this.bindUserEvents();
if (this.options.responsive) {
this.bindResponsiveEvents();
} else {
this.attached = true;
}
}
bindUserEvents() {
const listeners = this._listeners;
const platform = this.platform;
const _add = (type, listener)=>{
platform.addEventListener(this, type, listener);
listeners[type] = listener;
};
const listener = (e, x, y)=>{
e.offsetX = x;
e.offsetY = y;
this._eventHandler(e);
};
each(this.options.events, (type)=>_add(type, listener));
}
bindResponsiveEvents() {
if (!this._responsiveListeners) {
this._responsiveListeners = {};
}
const listeners = this._responsiveListeners;
const platform = this.platform;
const _add = (type, listener)=>{
platform.addEventListener(this, type, listener);
listeners[type] = listener;
};
const _remove = (type, listener)=>{
if (listeners[type]) {
platform.removeEventListener(this, type, listener);
delete listeners[type];
}
};
const listener = (width, height)=>{
if (this.canvas) {
this.resize(width, height);
}
};
let detached;
const attached = ()=>{
_remove('attach', attached);
this.attached = true;
this.resize();
_add('resize', listener);
_add('detach', detached);
};
detached = ()=>{
this.attached = false;
_remove('resize', listener);
this._stop();
this._resize(0, 0);
_add('attach', attached);
};
if (platform.isAttached(this.canvas)) {
attached();
} else {
detached();
}
}
unbindEvents() {
each(this._listeners, (listener, type)=>{
this.platform.removeEventListener(this, type, listener);
});
this._listeners = {};
each(this._responsiveListeners, (listener, type)=>{
this.platform.removeEventListener(this, type, listener);
});
this._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 lastActive = this._active || [];
const active = activeElements.map(({ datasetIndex , index })=>{
const meta = this.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) {
this._active = active;
this._lastEvent = null;
this._updateHoverStyles(active, lastActive);
}
}
notifyPlugins(hook, args, filter) {
return this._plugins.notify(this, hook, args, filter);
}
isPluginEnabled(pluginId) {
return this._plugins._cache.filter((p)=>p.plugin.id === pluginId).length === 1;
}
_updateHoverStyles(active, lastActive, replay) {
const hoverOptions = this.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) {
this.updateHoverStyle(deactivated, hoverOptions.mode, false);
}
if (activated.length && hoverOptions.mode) {
this.updateHoverStyle(activated, hoverOptions.mode, true);
}
}
_eventHandler(e, replay) {
const args = {
event: e,
replay,
cancelable: true,
inChartArea: this.isPointInArea(e)
};
const eventFilter = (plugin)=>(plugin.options.events || this.options.events).includes(e.native.type);
if (this.notifyPlugins('beforeEvent', args, eventFilter) === false) {
return;
}
const changed = this._handleEvent(e, replay, args.inChartArea);
args.cancelable = false;
this.notifyPlugins('afterEvent', args, eventFilter);
if (changed || args.changed) {
this.render();
}
return this;
}
_handleEvent(e, replay, inChartArea) {
const { _active: lastActive = [] , options } = this;
const useFinalPosition = replay;
const active = this._getActiveElements(e, lastActive, inChartArea, useFinalPosition);
const isClick = _isClickEvent(e);
const lastEvent = determineLastEvent(e, this._lastEvent, inChartArea, isClick);
if (inChartArea) {
this._lastEvent = null;
callback(options.onHover, [
e,
active,
this
], this);
if (isClick) {
callback(options.onClick, [
e,
active,
this
], this);
}
}
const changed = !_elementsEqual(active, lastActive);
if (changed || replay) {
this._active = active;
this._updateHoverStyles(active, lastActive, replay);
}
this._lastEvent = lastEvent;
return changed;
}
_getActiveElements(e, lastActive, inChartArea, useFinalPosition) {
if (e.type === 'mouseout') {
return [];
}
if (!inChartArea) {
return lastActive;
}
const hoverOptions = this.options.hover;
return this.getElementsAtEventForMode(e, hoverOptions.mode, hoverOptions, useFinalPosition);
}
}
function invalidatePlugins() {
return each(Chart.instances, (chart)=>chart._plugins.invalidate());
}
/**
* @namespace Chart._adapters
* @since 2.8.0
* @private
*/ function abstract() {
throw new Error('This method is not implemented: Check that a complete date adapter is provided.');
}
/**
* Date adapter (current used by the time scale)
* @namespace Chart._adapters._date
* @memberof Chart._adapters
* @private
*/ class DateAdapterBase {
/**
* Override default date adapter methods.
* Accepts type parameter to define options type.
* @example
* Chart._adapters._date.override<{myAdapterOption: string}>({
* init() {
* console.log(this.options.myAdapterOption);
* }
* })
*/ static override(members) {
Object.assign(DateAdapterBase.prototype, members);
}
options;
constructor(options){
this.options = options || {};
}
// eslint-disable-next-line @typescript-eslint/no-empty-function
init() {}
formats() {
return abstract();
}
parse() {
return abstract();
}
format() {
return abstract();
}
add() {
return abstract();
}
diff() {
return abstract();
}
startOf() {
return abstract();
}
endOf() {
return abstract();
}
}
var _adapters = {
_date: DateAdapterBase
};
function getAllScaleValues(scale, type) {
if (!scale._cache.$bar) {
const visibleMetas = scale.getMatchingVisibleMetas(type);
let values = [];
for(let i = 0, ilen = visibleMetas.length; i < ilen; i++){
values = values.concat(visibleMetas[i].controller.getAllParsedValues(scale));
}
scale._cache.$bar = _arrayUnique(values.sort((a, b)=>a - b));
}
return scale._cache.$bar;
}
function computeMinSampleSize(meta) {
const scale = meta.iScale;
const values = getAllScaleValues(scale, meta.type);
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;
}
if (edge === true) {
properties.borderSkipped = {
top: true,
right: true,
bottom: true,
left: true
};
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;
}
function setInflateAmount(properties, { inflateAmount }, ratio) {
properties.inflateAmount = inflateAmount === 'auto' ? ratio === 1 ? 0.33 : 0 : inflateAmount;
}
class BarController extends DatasetController {
static id = 'bar';
static defaults = {
datasetElementType: false,
dataElementType: 'bar',
categoryPercentage: 0.8,
barPercentage: 0.9,
grouped: true,
animations: {
numbers: {
type: 'number',
properties: [
'x',
'y',
'base',
'width',
'height'
]
}
}
};
static overrides = {
scales: {
_index_: {
type: 'category',
offset: true,
grid: {
offset: true
}
},
_value_: {
type: 'linear',
beginAtZero: true
}
}
};
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 meta = this._cachedMeta;
const { iScale , vScale } = meta;
const parsed = this.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() {
this.enableOptionSharing = true;
super.initialize();
const meta = this._cachedMeta;
meta.stack = this.getDataset().stack;
}
update(mode) {
const meta = this._cachedMeta;
this.updateElements(meta.data, 0, meta.data.length, mode);
}
updateElements(bars, start, count, mode) {
const reset = mode === 'reset';
const { index , _cachedMeta: { vScale } } = this;
const base = vScale.getBasePixel();
const horizontal = vScale.isHorizontal();
const ruler = this._getRuler();
const { sharedOptions , includeOptions } = this._getSharedOptions(start, mode);
for(let i = start; i < start + count; i++){
const parsed = this.getParsed(i);
const vpixels = reset || isNullOrUndef(parsed[vScale.axis]) ? {
base,
head: base
} : this._calculateBarValuePixels(i);
const ipixels = this._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 || this.resolveDataElementOptions(i, bars[i].active ? 'active' : mode);
}
const options = properties.options || bars[i].options;
setBorderSkipped(properties, options, stack, index);
setInflateAmount(properties, options, ruler.ratio);
this.updateElement(bars[i], i, properties, mode);
}
}
_getStacks(last, dataIndex) {
const { iScale } = this._cachedMeta;
const metasets = iScale.getMatchingVisibleMetas(this._type).filter((meta)=>meta.controller.options.grouped);
const stacked = iScale.options.stacked;
const stacks = [];
const skipNull = (meta)=>{
const parsed = meta.controller.getParsed(dataIndex);
const val = parsed && parsed[meta.vScale.axis];
if (isNullOrUndef(val) || isNaN(val)) {
return true;
}
};
for (const meta of metasets){
if (dataIndex !== undefined && skipNull(meta)) {
continue;
}
if (stacked === false || stacks.indexOf(meta.stack) === -1 || stacked === undefined && meta.stack === undefined) {
stacks.push(meta.stack);
}
if (meta.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 opts = this.options;
const meta = this._cachedMeta;
const iScale = meta.iScale;
const pixels = [];
let i, ilen;
for(i = 0, ilen = meta.data.length; i < ilen; ++i){
pixels.push(iScale.getPixelForValue(this.getParsed(i)[iScale.axis], i));
}
const barThickness = opts.barThickness;
const min = barThickness || computeMinSampleSize(meta);
return {
min,
pixels,
start: iScale._startPixel,
end: iScale._endPixel,
stackCount: this._getStackCount(),
scale: iScale,
grouped: opts.grouped,
ratio: barThickness ? 1 : opts.categoryPercentage * opts.barPercentage
};
}
_calculateBarValuePixels(index) {
const { _cachedMeta: { vScale , _stacked , index: datasetIndex } , options: { base: baseValue , minBarLength } } = this;
const actualBase = baseValue || 0;
const parsed = this.getParsed(index);
const custom = parsed._custom;
const floating = isFloatBar(custom);
let value = parsed[vScale.axis];
let start = 0;
let length = _stacked ? this.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 (this.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;
}
const startPixel = vScale.getPixelForDecimal(0);
const endPixel = vScale.getPixelForDecimal(1);
const min = Math.min(startPixel, endPixel);
const max = Math.max(startPixel, endPixel);
base = Math.max(Math.min(base, max), min);
head = base + size;
if (_stacked && !floating) {
parsed._stacks[vScale.axis]._visualValues[datasetIndex] = vScale.getValueForPixel(head) - vScale.getValueForPixel(base);
}
}
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 scale = ruler.scale;
const options = this.options;
const skipNull = options.skipNull;
const maxBarThickness = valueOrDefault(options.maxBarThickness, Infinity);
let center, size;
if (ruler.grouped) {
const stackCount = skipNull ? this._getStackCount(index) : ruler.stackCount;
const range = options.barThickness === 'flex' ? computeFlexCategoryTraits(index, ruler, options, stackCount) : computeFitCategoryTraits(index, ruler, options, stackCount);
const stackIndex = this._getStackIndex(this.index, this._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(this.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 meta = this._cachedMeta;
const vScale = meta.vScale;
const rects = meta.data;
const ilen = rects.length;
let i = 0;
for(; i < ilen; ++i){
if (this.getParsed(i)[vScale.axis] !== null) {
rects[i].draw(this._ctx);
}
}
}
}
class BubbleController extends DatasetController {
static id = 'bubble';
static defaults = {
datasetElementType: false,
dataElementType: 'point',
animations: {
numbers: {
type: 'number',
properties: [
'x',
'y',
'borderWidth',
'radius'
]
}
}
};
static overrides = {
scales: {
x: {
type: 'linear'
},
y: {
type: 'linear'
}
}
};
initialize() {
this.enableOptionSharing = true;
super.initialize();
}
parsePrimitiveData(meta, data, start, count) {
const parsed = super.parsePrimitiveData(meta, data, start, count);
for(let i = 0; i < parsed.length; i++){
parsed[i]._custom = this.resolveDataElementOptions(i + start).radius;
}
return parsed;
}
parseArrayData(meta, data, start, count) {
const parsed = super.parseArrayData(meta, data, start, count);
for(let i = 0; i < parsed.length; i++){
const item = data[start + i];
parsed[i]._custom = valueOrDefault(item[2], this.resolveDataElementOptions(i + start).radius);
}
return parsed;
}
parseObjectData(meta, data, start, count) {
const parsed = super.parseObjectData(meta, data, start, count);
for(let i = 0; i < parsed.length; i++){
const item = data[start + i];
parsed[i]._custom = valueOrDefault(item && item.r && +item.r, this.resolveDataElementOptions(i + start).radius);
}
return parsed;
}
getMaxOverflow() {
const data = this._cachedMeta.data;
let max = 0;
for(let i = data.length - 1; i >= 0; --i){
max = Math.max(max, data[i].size(this.resolveDataElementOptions(i)) / 2);
}
return max > 0 && max;
}
getLabelAndValue(index) {
const meta = this._cachedMeta;
const labels = this.chart.data.labels || [];
const { xScale , yScale } = meta;
const parsed = this.getParsed(index);
const x = xScale.getLabelForValue(parsed.x);
const y = yScale.getLabelForValue(parsed.y);
const r = parsed._custom;
return {
label: labels[index] || '',
value: '(' + x + ', ' + y + (r ? ', ' + r : '') + ')'
};
}
update(mode) {
const points = this._cachedMeta.data;
this.updateElements(points, 0, points.length, mode);
}
updateElements(points, start, count, mode) {
const reset = mode === 'reset';
const { iScale , vScale } = this._cachedMeta;
const { sharedOptions , includeOptions } = this._getSharedOptions(start, mode);
const iAxis = iScale.axis;
const vAxis = vScale.axis;
for(let i = start; i < start + count; i++){
const point = points[i];
const parsed = !reset && this.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 = sharedOptions || this.resolveDataElementOptions(i, point.active ? 'active' : mode);
if (reset) {
properties.options.radius = 0;
}
}
this.updateElement(point, i, properties, mode);
}
}
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;
}
}
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 {
static id = 'doughnut';
static 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'
};
static descriptors = {
_scriptable: (name)=>name !== 'spacing',
_indexable: (name)=>name !== 'spacing' && !name.startsWith('borderDash') && !name.startsWith('hoverBorderDash')
};
static overrides = {
aspectRatio: 1,
plugins: {
legend: {
labels: {
generateLabels (chart) {
const data = chart.data;
if (data.labels.length && data.datasets.length) {
const { labels: { pointStyle , color } } = 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,
fontColor: color,
lineWidth: style.borderWidth,
pointStyle: pointStyle,
hidden: !chart.getDataVisibility(i),
index: i
};
});
}
return [];
}
},
onClick (e, legendItem, legend) {
legend.chart.toggleDataVisibility(legendItem.index);
legend.chart.update();
}
}
}
};
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;
if (this._parsing === false) {
meta._parsed = data;
} else {
let getter = (i)=>+data[i];
if (isObject(data[start])) {
const { key ='value' } = this._parsing;
getter = (i)=>+resolveObjectKey(data[i], key);
}
let i, ilen;
for(i = start, ilen = start + count; i < ilen; ++i){
meta._parsed[i] = getter(i);
}
}
}
_getRotation() {
return toRadians(this.options.rotation - 90);
}
_getCircumference() {
return toRadians(this.options.circumference);
}
_getRotationExtents() {
let min = TAU;
let max = -TAU;
for(let i = 0; i < this.chart.data.datasets.length; ++i){
if (this.chart.isDatasetVisible(i) && this.chart.getDatasetMeta(i).type === this._type) {
const controller = this.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 chart = this.chart;
const { chartArea } = chart;
const meta = this._cachedMeta;
const arcs = meta.data;
const spacing = this.getMaxBorderWidth() + this.getMaxOffset(arcs) + this.options.spacing;
const maxSize = Math.max((Math.min(chartArea.width, chartArea.height) - spacing) / 2, 0);
const cutout = Math.min(toPercentage(this.options.cutout, maxSize), 1);
const chartWeight = this._getRingWeight(this.index);
const { circumference , rotation } = this._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(this.options.radius, maxRadius);
const innerRadius = Math.max(outerRadius * cutout, 0);
const radiusLength = (outerRadius - innerRadius) / this._getVisibleDatasetWeightTotal();
this.offsetX = offsetX * outerRadius;
this.offsetY = offsetY * outerRadius;
meta.total = this.calculateTotal();
this.outerRadius = outerRadius - radiusLength * this._getRingWeightOffset(this.index);
this.innerRadius = Math.max(this.outerRadius - radiusLength * chartWeight, 0);
this.updateElements(arcs, 0, arcs.length, mode);
}
_circumference(i, reset) {
const opts = this.options;
const meta = this._cachedMeta;
const circumference = this._getCircumference();
if (reset && opts.animation.animateRotate || !this.chart.getDataVisibility(i) || meta._parsed[i] === null || meta.data[i].hidden) {
return 0;
}
return this.calculateCircumference(meta._parsed[i] * circumference / TAU);
}
updateElements(arcs, start, count, mode) {
const reset = mode === 'reset';
const chart = this.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 : this.innerRadius;
const outerRadius = animateScale ? 0 : this.outerRadius;
const { sharedOptions , includeOptions } = this._getSharedOptions(start, mode);
let startAngle = this._getRotation();
let i;
for(i = 0; i < start; ++i){
startAngle += this._circumference(i, reset);
}
for(i = start; i < start + count; ++i){
const circumference = this._circumference(i, reset);
const arc = arcs[i];
const properties = {
x: centerX + this.offsetX,
y: centerY + this.offsetY,
startAngle,
endAngle: startAngle + circumference,
circumference,
outerRadius,
innerRadius
};
if (includeOptions) {
properties.options = sharedOptions || this.resolveDataElementOptions(i, arc.active ? 'active' : mode);
}
startAngle += circumference;
this.updateElement(arc, i, properties, mode);
}
}
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 meta = this._cachedMeta;
const chart = this.chart;
const labels = chart.data.labels || [];
const value = formatNumber(meta._parsed[index], chart.options.locale);
return {
label: labels[index] || '',
value
};
}
getMaxBorderWidth(arcs) {
let max = 0;
const chart = this.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;
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;
}
}
class LineController extends DatasetController {
static id = 'line';
static defaults = {
datasetElementType: 'line',
dataElementType: 'point',
showLine: true,
spanGaps: false
};
static overrides = {
scales: {
_index_: {
type: 'category'
},
_value_: {
type: 'linear'
}
}
};
initialize() {
this.enableOptionSharing = true;
this.supportsDecimation = true;
super.initialize();
}
update(mode) {
const meta = this._cachedMeta;
const { dataset: line , data: points = [] , _dataset } = meta;
const animationsDisabled = this.chart._animationsDisabled;
let { start , count } = _getStartAndCountOfVisiblePoints(meta, points, animationsDisabled);
this._drawStart = start;
this._drawCount = count;
if (_scaleRangesChanged(meta)) {
start = 0;
count = points.length;
}
line._chart = this.chart;
line._datasetIndex = this.index;
line._decimated = !!_dataset._decimated;
line.points = points;
const options = this.resolveDatasetElementOptions(mode);
if (!this.options.showLine) {
options.borderWidth = 0;
}
options.segment = this.options.segment;
this.updateElement(line, undefined, {
animated: !animationsDisabled,
options
}, mode);
this.updateElements(points, start, count, mode);
}
updateElements(points, start, count, mode) {
const reset = mode === 'reset';
const { iScale , vScale , _stacked , _dataset } = this._cachedMeta;
const { sharedOptions , includeOptions } = this._getSharedOptions(start, mode);
const iAxis = iScale.axis;
const vAxis = vScale.axis;
const { spanGaps , segment } = this.options;
const maxGapLength = isNumber(spanGaps) ? spanGaps : Number.POSITIVE_INFINITY;
const directUpdate = this.chart._animationsDisabled || reset || mode === 'none';
const end = start + count;
const pointsCount = points.length;
let prevParsed = start > 0 && this.getParsed(start - 1);
for(let i = 0; i < pointsCount; ++i){
const point = points[i];
const properties = directUpdate ? point : {};
if (i < start || i >= end) {
properties.skip = true;
continue;
}
const parsed = this.getParsed(i);
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 ? this.applyStack(vScale, parsed, _stacked) : parsed[vAxis], i);
properties.skip = isNaN(iPixel) || isNaN(vPixel) || nullData;
properties.stop = i > 0 && Math.abs(parsed[iAxis] - prevParsed[iAxis]) > maxGapLength;
if (segment) {
properties.parsed = parsed;
properties.raw = _dataset.data[i];
}
if (includeOptions) {
properties.options = sharedOptions || this.resolveDataElementOptions(i, point.active ? 'active' : mode);
}
if (!directUpdate) {
this.updateElement(point, i, properties, mode);
}
prevParsed = parsed;
}
}
getMaxOverflow() {
const meta = this._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(this.resolveDataElementOptions(0));
const lastPoint = data[data.length - 1].size(this.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();
}
}
class PolarAreaController extends DatasetController {
static id = 'polarArea';
static defaults = {
dataElementType: 'arc',
animation: {
animateRotate: true,
animateScale: true
},
animations: {
numbers: {
type: 'number',
properties: [
'x',
'y',
'startAngle',
'endAngle',
'innerRadius',
'outerRadius'
]
}
},
indexAxis: 'r',
startAngle: 0
};
static overrides = {
aspectRatio: 1,
plugins: {
legend: {
labels: {
generateLabels (chart) {
const data = chart.data;
if (data.labels.length && data.datasets.length) {
const { labels: { pointStyle , color } } = 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,
fontColor: color,
lineWidth: style.borderWidth,
pointStyle: pointStyle,
hidden: !chart.getDataVisibility(i),
index: i
};
});
}
return [];
}
},
onClick (e, legendItem, legend) {
legend.chart.toggleDataVisibility(legendItem.index);
legend.chart.update();
}
}
},
scales: {
r: {
type: 'radialLinear',
angleLines: {
display: false
},
beginAtZero: true,
grid: {
circular: true
},
pointLabels: {
display: false
},
startAngle: 0
}
}
};
constructor(chart, datasetIndex){
super(chart, datasetIndex);
this.innerRadius = undefined;
this.outerRadius = undefined;
}
getLabelAndValue(index) {
const meta = this._cachedMeta;
const chart = this.chart;
const labels = chart.data.labels || [];
const value = formatNumber(meta._parsed[index].r, chart.options.locale);
return {
label: labels[index] || '',
value
};
}
parseObjectData(meta, data, start, count) {
return _parseObjectDataRadialScale.bind(this)(meta, data, start, count);
}
update(mode) {
const arcs = this._cachedMeta.data;
this._updateRadius();
this.updateElements(arcs, 0, arcs.length, mode);
}
getMinMax() {
const meta = this._cachedMeta;
const range = {
min: Number.POSITIVE_INFINITY,
max: Number.NEGATIVE_INFINITY
};
meta.data.forEach((element, index)=>{
const parsed = this.getParsed(index).r;
if (!isNaN(parsed) && this.chart.getDataVisibility(index)) {
if (parsed < range.min) {
range.min = parsed;
}
if (parsed > range.max) {
range.max = parsed;
}
}
});
return range;
}
_updateRadius() {
const chart = this.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();
this.outerRadius = outerRadius - radiusLength * this.index;
this.innerRadius = this.outerRadius - radiusLength;
}
updateElements(arcs, start, count, mode) {
const reset = mode === 'reset';
const chart = this.chart;
const opts = chart.options;
const animationOpts = opts.animation;
const scale = this._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 / this.countVisibleElements();
for(i = 0; i < start; ++i){
angle += this._computeAngle(i, mode, defaultAngle);
}
for(i = start; i < start + count; i++){
const arc = arcs[i];
let startAngle = angle;
let endAngle = angle + this._computeAngle(i, mode, defaultAngle);
let outerRadius = chart.getDataVisibility(i) ? scale.getDistanceFromCenterForValue(this.getParsed(i).r) : 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: this.resolveDataElementOptions(i, arc.active ? 'active' : mode)
};
this.updateElement(arc, i, properties, mode);
}
}
countVisibleElements() {
const meta = this._cachedMeta;
let count = 0;
meta.data.forEach((element, index)=>{
if (!isNaN(this.getParsed(index).r) && this.chart.getDataVisibility(index)) {
count++;
}
});
return count;
}
_computeAngle(index, mode, defaultAngle) {
return this.chart.getDataVisibility(index) ? toRadians(this.resolveDataElementOptions(index, mode).angle || defaultAngle) : 0;
}
}
class PieController extends DoughnutController {
static id = 'pie';
static defaults = {
cutout: 0,
rotation: 0,
circumference: 360,
radius: '100%'
};
}
class RadarController extends DatasetController {
static id = 'radar';
static defaults = {
datasetElementType: 'line',
dataElementType: 'point',
indexAxis: 'r',
showLine: true,
elements: {
line: {
fill: 'start'
}
}
};
static overrides = {
aspectRatio: 1,
scales: {
r: {
type: 'radialLinear'
}
}
};
getLabelAndValue(index) {
const vScale = this._cachedMeta.vScale;
const parsed = this.getParsed(index);
return {
label: vScale.getLabels()[index],
value: '' + vScale.getLabelForValue(parsed[vScale.axis])
};
}
parseObjectData(meta, data, start, count) {
return _parseObjectDataRadialScale.bind(this)(meta, data, start, count);
}
update(mode) {
const meta = this._cachedMeta;
const line = meta.dataset;
const points = meta.data || [];
const labels = meta.iScale.getLabels();
line.points = points;
if (mode !== 'resize') {
const options = this.resolveDatasetElementOptions(mode);
if (!this.options.showLine) {
options.borderWidth = 0;
}
const properties = {
_loop: true,
_fullLoop: labels.length === points.length,
options
};
this.updateElement(line, undefined, properties, mode);
}
this.updateElements(points, 0, points.length, mode);
}
updateElements(points, start, count, mode) {
const scale = this._cachedMeta.rScale;
const reset = mode === 'reset';
for(let i = start; i < start + count; i++){
const point = points[i];
const options = this.resolveDataElementOptions(i, point.active ? 'active' : mode);
const pointPosition = scale.getPointPositionForValue(i, this.getParsed(i).r);
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
};
this.updateElement(point, i, properties, mode);
}
}
}
class ScatterController extends DatasetController {
static id = 'scatter';
static defaults = {
datasetElementType: false,
dataElementType: 'point',
showLine: false,
fill: false
};
static overrides = {
interaction: {
mode: 'point'
},
scales: {
x: {
type: 'linear'
},
y: {
type: 'linear'
}
}
};
getLabelAndValue(index) {
const meta = this._cachedMeta;
const labels = this.chart.data.labels || [];
const { xScale , yScale } = meta;
const parsed = this.getParsed(index);
const x = xScale.getLabelForValue(parsed.x);
const y = yScale.getLabelForValue(parsed.y);
return {
label: labels[index] || '',
value: '(' + x + ', ' + y + ')'
};
}
update(mode) {
const meta = this._cachedMeta;
const { data: points = [] } = meta;
const animationsDisabled = this.chart._animationsDisabled;
let { start , count } = _getStartAndCountOfVisiblePoints(meta, points, animationsDisabled);
this._drawStart = start;
this._drawCount = count;
if (_scaleRangesChanged(meta)) {
start = 0;
count = points.length;
}
if (this.options.showLine) {
if (!this.datasetElementType) {
this.addElements();
}
const { dataset: line , _dataset } = meta;
line._chart = this.chart;
line._datasetIndex = this.index;
line._decimated = !!_dataset._decimated;
line.points = points;
const options = this.resolveDatasetElementOptions(mode);
options.segment = this.options.segment;
this.updateElement(line, undefined, {
animated: !animationsDisabled,
options
}, mode);
} else if (this.datasetElementType) {
delete meta.dataset;
this.datasetElementType = false;
}
this.updateElements(points, start, count, mode);
}
addElements() {
const { showLine } = this.options;
if (!this.datasetElementType && showLine) {
this.datasetElementType = this.chart.registry.getElement('line');
}
super.addElements();
}
updateElements(points, start, count, mode) {
const reset = mode === 'reset';
const { iScale , vScale , _stacked , _dataset } = this._cachedMeta;
const firstOpts = this.resolveDataElementOptions(start, mode);
const sharedOptions = this.getSharedOptions(firstOpts);
const includeOptions = this.includeOptions(mode, sharedOptions);
const iAxis = iScale.axis;
const vAxis = vScale.axis;
const { spanGaps , segment } = this.options;
const maxGapLength = isNumber(spanGaps) ? spanGaps : Number.POSITIVE_INFINITY;
const directUpdate = this.chart._animationsDisabled || reset || mode === 'none';
let prevParsed = start > 0 && this.getParsed(start - 1);
for(let i = start; i < start + count; ++i){
const point = points[i];
const parsed = this.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 ? this.applyStack(vScale, parsed, _stacked) : parsed[vAxis], i);
properties.skip = isNaN(iPixel) || isNaN(vPixel) || nullData;
properties.stop = i > 0 && Math.abs(parsed[iAxis] - prevParsed[iAxis]) > maxGapLength;
if (segment) {
properties.parsed = parsed;
properties.raw = _dataset.data[i];
}
if (includeOptions) {
properties.options = sharedOptions || this.resolveDataElementOptions(i, point.active ? 'active' : mode);
}
if (!directUpdate) {
this.updateElement(point, i, properties, mode);
}
prevParsed = parsed;
}
this.updateSharedOptions(sharedOptions, mode, firstOpts);
}
getMaxOverflow() {
const meta = this._cachedMeta;
const data = meta.data || [];
if (!this.options.showLine) {
let max = 0;
for(let i = data.length - 1; i >= 0; --i){
max = Math.max(max, data[i].size(this.resolveDataElementOptions(i)) / 2);
}
return max > 0 && max;
}
const dataset = meta.dataset;
const border = dataset.options && dataset.options.borderWidth || 0;
if (!data.length) {
return border;
}
const firstPoint = data[0].size(this.resolveDataElementOptions(0));
const lastPoint = data[data.length - 1].size(this.resolveDataElementOptions(data.length - 1));
return Math.max(border, firstPoint, lastPoint) / 2;
}
}
var controllers = /*#__PURE__*/Object.freeze({
__proto__: null,
BarController: BarController,
BubbleController: BubbleController,
DoughnutController: DoughnutController,
LineController: LineController,
PieController: PieController,
PolarAreaController: PolarAreaController,
RadarController: RadarController,
ScatterController: ScatterController
});
function clipArc(ctx, element, endAngle) {
const { startAngle , pixelMargin , x , y , outerRadius , innerRadius } = element;
let angleMargin = pixelMargin / outerRadius;
// Draw an inner border by clipping the arc and drawing a double-width border
// Enlarge the clipping arc by 0.33 pixels to eliminate glitches between borders
ctx.beginPath();
ctx.arc(x, y, 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'
]);
}
/**
* Parse border radius from the provided options
*/ 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);
// Outer limits are complicated. We want to compute the available angular distance at
// a radius of outerRadius - borderRadius because for small angular distances, this term limits.
// We compute at r = outerRadius - borderRadius because this circle defines the center of the border corners.
//
// If the borderRadius is large, that value can become negative.
// This causes the outer borders to lose their radius entirely, which is rather unexpected. To solve that, if borderRadius > outerRadius
// we know that the thickness term will dominate and compute the limits at that point
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)
};
}
/**
* Convert (r, 𝜃) to (x, y)
*/ function rThetaToXY(r, theta, x, y) {
return {
x: x + r * Math.cos(theta),
y: y + r * Math.sin(theta)
};
}
/**
* Path the arc, respecting border radius by separating into left and right halves.
*
* Start End
*
* 1--->a--->2 Outer
* / \
* 8 3
* | |
* | |
* 7 4
* \ /
* 6<---b<---5 Inner
*/ function pathArc(ctx, element, offset, spacing, end, circular) {
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) {
// When spacing is present, it is the same for all items
// So we adjust the start and end angle of the arc such that
// the distance is the same as it would be without the 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();
if (circular) {
// The first arc segments from point 1 to point a to point 2
const outerMidAdjustedAngle = (outerStartAdjustedAngle + outerEndAdjustedAngle) / 2;
ctx.arc(x, y, outerRadius, outerStartAdjustedAngle, outerMidAdjustedAngle);
ctx.arc(x, y, outerRadius, outerMidAdjustedAngle, outerEndAdjustedAngle);
// The corner segment from point 2 to point 3
if (outerEnd > 0) {
const pCenter = rThetaToXY(outerEndAdjustedRadius, outerEndAdjustedAngle, x, y);
ctx.arc(pCenter.x, pCenter.y, outerEnd, outerEndAdjustedAngle, endAngle + HALF_PI);
}
// The line from point 3 to point 4
const p4 = rThetaToXY(innerEndAdjustedRadius, endAngle, x, y);
ctx.lineTo(p4.x, p4.y);
// The corner segment from point 4 to point 5
if (innerEnd > 0) {
const pCenter = rThetaToXY(innerEndAdjustedRadius, innerEndAdjustedAngle, x, y);
ctx.arc(pCenter.x, pCenter.y, innerEnd, endAngle + HALF_PI, innerEndAdjustedAngle + Math.PI);
}
// The inner arc from point 5 to point b to point 6
const innerMidAdjustedAngle = (endAngle - innerEnd / innerRadius + (startAngle + innerStart / innerRadius)) / 2;
ctx.arc(x, y, innerRadius, endAngle - innerEnd / innerRadius, innerMidAdjustedAngle, true);
ctx.arc(x, y, innerRadius, innerMidAdjustedAngle, startAngle + innerStart / innerRadius, true);
// The corner segment from point 6 to point 7
if (innerStart > 0) {
const pCenter = rThetaToXY(innerStartAdjustedRadius, innerStartAdjustedAngle, x, y);
ctx.arc(pCenter.x, pCenter.y, innerStart, innerStartAdjustedAngle + Math.PI, startAngle - HALF_PI);
}
// The line from point 7 to point 8
const p8 = rThetaToXY(outerStartAdjustedRadius, startAngle, x, y);
ctx.lineTo(p8.x, p8.y);
// The corner segment from point 8 to point 1
if (outerStart > 0) {
const pCenter = rThetaToXY(outerStartAdjustedRadius, outerStartAdjustedAngle, x, y);
ctx.arc(pCenter.x, pCenter.y, outerStart, startAngle - HALF_PI, outerStartAdjustedAngle);
}
} else {
ctx.moveTo(x, y);
const outerStartX = Math.cos(outerStartAdjustedAngle) * outerRadius + x;
const outerStartY = Math.sin(outerStartAdjustedAngle) * outerRadius + y;
ctx.lineTo(outerStartX, outerStartY);
const outerEndX = Math.cos(outerEndAdjustedAngle) * outerRadius + x;
const outerEndY = Math.sin(outerEndAdjustedAngle) * outerRadius + y;
ctx.lineTo(outerEndX, outerEndY);
}
ctx.closePath();
}
function drawArc(ctx, element, offset, spacing, circular) {
const { fullCircles , startAngle , circumference } = element;
let endAngle = element.endAngle;
if (fullCircles) {
pathArc(ctx, element, offset, spacing, endAngle, circular);
for(let i = 0; i < fullCircles; ++i){
ctx.fill();
}
if (!isNaN(circumference)) {
endAngle = startAngle + (circumference % TAU || TAU);
}
}
pathArc(ctx, element, offset, spacing, endAngle, circular);
ctx.fill();
return endAngle;
}
function drawBorder(ctx, element, offset, spacing, circular) {
const { fullCircles , startAngle , circumference , options } = element;
const { borderWidth , borderJoinStyle , borderDash , borderDashOffset } = options;
const inner = options.borderAlign === 'inner';
if (!borderWidth) {
return;
}
ctx.setLineDash(borderDash || []);
ctx.lineDashOffset = borderDashOffset;
if (inner) {
ctx.lineWidth = borderWidth * 2;
ctx.lineJoin = borderJoinStyle || 'round';
} else {
ctx.lineWidth = borderWidth;
ctx.lineJoin = borderJoinStyle || 'bevel';
}
let endAngle = element.endAngle;
if (fullCircles) {
pathArc(ctx, element, offset, spacing, endAngle, circular);
for(let i = 0; i < fullCircles; ++i){
ctx.stroke();
}
if (!isNaN(circumference)) {
endAngle = startAngle + (circumference % TAU || TAU);
}
}
if (inner) {
clipArc(ctx, element, endAngle);
}
if (!fullCircles) {
pathArc(ctx, element, offset, spacing, endAngle, circular);
ctx.stroke();
}
}
class ArcElement extends Element {
static id = 'arc';
static defaults = {
borderAlign: 'center',
borderColor: '#fff',
borderDash: [],
borderDashOffset: 0,
borderJoinStyle: undefined,
borderRadius: 0,
borderWidth: 2,
offset: 0,
spacing: 0,
angle: undefined,
circular: true
};
static defaultRoutes = {
backgroundColor: 'backgroundColor'
};
static descriptors = {
_scriptable: true,
_indexable: (name)=>name !== 'borderDash'
};
circumference;
endAngle;
fullCircles;
innerRadius;
outerRadius;
pixelMargin;
startAngle;
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 + this.options.borderWidth) / 2;
const _circumference = valueOrDefault(circumference, endAngle - startAngle);
const betweenAngles = _circumference >= TAU || _angleBetween(angle, startAngle, endAngle);
const withinRadius = _isBetween(distance, innerRadius + rAdjust, outerRadius + rAdjust);
return betweenAngles && withinRadius;
}
getCenterPoint(useFinalPosition) {
const { x , y , startAngle , endAngle , innerRadius , outerRadius } = this.getProps([
'x',
'y',
'startAngle',
'endAngle',
'innerRadius',
'outerRadius'
], 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 { options , circumference } = this;
const offset = (options.offset || 0) / 4;
const spacing = (options.spacing || 0) / 2;
const circular = options.circular;
this.pixelMargin = options.borderAlign === 'inner' ? 0.33 : 0;
this.fullCircles = circumference > TAU ? Math.floor(circumference / TAU) : 0;
if (circumference === 0 || this.innerRadius < 0 || this.outerRadius < 0) {
return;
}
ctx.save();
const halfAngle = (this.startAngle + this.endAngle) / 2;
ctx.translate(Math.cos(halfAngle) * offset, Math.sin(halfAngle) * offset);
const fix = 1 - Math.sin(Math.min(PI, circumference || 0));
const radiusOffset = offset * fix;
ctx.fillStyle = options.backgroundColor;
ctx.strokeStyle = options.borderColor;
drawArc(ctx, this, radiusOffset, spacing, circular);
drawBorder(ctx, this, radiusOffset, spacing, circular);
ctx.restore();
}
}
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.options.segment) {
strokePathWithCache(ctx, line, start, count);
} else {
strokePathDirect(ctx, line, start, count);
}
}
class LineElement extends Element {
static id = 'line';
static defaults = {
borderCapStyle: 'butt',
borderDash: [],
borderDashOffset: 0,
borderJoinStyle: 'miter',
borderWidth: 3,
capBezierPoints: true,
cubicInterpolationMode: 'default',
fill: false,
spanGaps: false,
stepped: false,
tension: 0
};
static defaultRoutes = {
backgroundColor: 'backgroundColor',
borderColor: 'borderColor'
};
static descriptors = {
_scriptable: true,
_indexable: (name)=>name !== 'borderDash' && name !== 'fill'
};
constructor(cfg){
super();
this.animated = true;
this.options = undefined;
this._chart = 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 options = this.options;
if ((options.tension || options.cubicInterpolationMode === 'monotone') && !options.stepped && !this._pointsUpdated) {
const loop = options.spanGaps ? this._loop : this._fullLoop;
_updateBezierControlPoints(this._points, options, chartArea, loop, indexAxis);
this._pointsUpdated = true;
}
}
set points(points) {
this._points = points;
delete this._segments;
delete this._path;
this._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 options = this.options;
const value = point[property];
const points = this.points;
const segments = _boundSegments(this, {
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 segments = this.segments;
const segmentMethod = _getSegmentMethod(this);
let loop = this._loop;
start = start || 0;
count = count || this.points.length - start;
for (const segment of segments){
loop &= segmentMethod(ctx, this, segment, {
start,
end: start + count - 1
});
}
return !!loop;
}
draw(ctx, chartArea, start, count) {
const options = this.options || {};
const points = this.points || [];
if (points.length && options.borderWidth) {
ctx.save();
draw(ctx, this, start, count);
ctx.restore();
}
if (this.animated) {
this._pointsUpdated = false;
this._path = undefined;
}
}
}
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 {
static id = 'point';
parsed;
skip;
stop;
/**
* @type {any}
*/ static defaults = {
borderWidth: 1,
hitRadius: 1,
hoverBorderWidth: 1,
hoverRadius: 4,
pointStyle: 'circle',
radius: 3,
rotation: 0
};
/**
* @type {any}
*/ static defaultRoutes = {
backgroundColor: 'backgroundColor',
borderColor: 'borderColor'
};
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 options = this.options;
if (this.skip || options.radius < 0.1 || !_isPointInArea(this, area, this.size(options) / 2)) {
return;
}
ctx.strokeStyle = options.borderColor;
ctx.lineWidth = options.borderWidth;
ctx.fillStyle = options.backgroundColor;
drawPoint(ctx, options, this.x, this.y);
}
getRange() {
const options = this.options || {};
// @ts-expect-error Fallbacks should never be hit in practice
return options.radius + options.hitRadius;
}
}
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 || _isBetween(x, bounds.left, bounds.right)) && (skipY || _isBetween(y, bounds.top, 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 {
static id = 'bar';
static defaults = {
borderSkipped: 'start',
borderWidth: 0,
borderRadius: 0,
inflateAmount: 'auto',
pointStyle: undefined
};
static defaultRoutes = {
backgroundColor: 'backgroundColor',
borderColor: 'borderColor'
};
constructor(cfg){
super();
this.options = undefined;
this.horizontal = undefined;
this.base = undefined;
this.width = undefined;
this.height = undefined;
this.inflateAmount = undefined;
if (cfg) {
Object.assign(this, cfg);
}
}
draw(ctx) {
const { inflateAmount , options: { borderColor , backgroundColor } } = this;
const { inner , outer } = boundingRects(this);
const addRectPath = hasRadius(outer.radius) ? addRoundedRectPath : addNormalRectPath;
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 = borderColor;
ctx.fill('evenodd');
}
ctx.beginPath();
addRectPath(ctx, inflateRect(inner, inflateAmount));
ctx.fillStyle = 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;
}
}
var elements = /*#__PURE__*/Object.freeze({
__proto__: null,
ArcElement: ArcElement,
BarElement: BarElement,
LineElement: LineElement,
PointElement: PointElement
});
const addIfString = (labels, raw, index, addedLabels)=>{
if (typeof raw === 'string') {
index = labels.push(raw) - 1;
addedLabels.unshift({
index,
label: raw
});
} else if (isNaN(raw)) {
index = null;
}
return index;
};
function findOrAddLabel(labels, raw, index, addedLabels) {
const first = labels.indexOf(raw);
if (first === -1) {
return addIfString(labels, raw, index, addedLabels);
}
const last = labels.lastIndexOf(raw);
return first !== last ? index : first;
}
const validIndex = (index, max)=>index === null ? null : _limitValue(Math.round(index), 0, max);
function _getLabelForValue(value) {
const labels = this.getLabels();
if (value >= 0 && value < labels.length) {
return labels[value];
}
return value;
}
class CategoryScale extends Scale {
static id = 'category';
static defaults = {
ticks: {
callback: _getLabelForValue
}
};
constructor(cfg){
super(cfg);
this._startValue = undefined;
this._valueRange = 0;
this._addedLabels = [];
}
init(scaleOptions) {
const added = this._addedLabels;
if (added.length) {
const labels = this.getLabels();
for (const { index , label } of added){
if (labels[index] === label) {
labels.splice(index, 1);
}
}
this._addedLabels = [];
}
super.init(scaleOptions);
}
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), this._addedLabels);
return validIndex(index, labels.length - 1);
}
determineDataLimits() {
const { minDefined , maxDefined } = this.getUserBounds();
let { min , max } = this.getMinMax(true);
if (this.options.bounds === 'ticks') {
if (!minDefined) {
min = 0;
}
if (!maxDefined) {
max = this.getLabels().length - 1;
}
}
this.min = min;
this.max = max;
}
buildTicks() {
const min = this.min;
const max = this.max;
const offset = this.options.offset;
const ticks = [];
let labels = this.getLabels();
labels = min === 0 && max === labels.length - 1 ? labels : labels.slice(min, max + 1);
this._valueRange = Math.max(labels.length - (offset ? 0 : 1), 1);
this._startValue = this.min - (offset ? 0.5 : 0);
for(let value = min; value <= max; value++){
ticks.push({
value
});
}
return ticks;
}
getLabelForValue(value) {
return _getLabelForValue.call(this, value);
}
configure() {
super.configure();
if (!this.isHorizontal()) {
this._reversePixels = !this._reversePixels;
}
}
getPixelForValue(value) {
if (typeof value !== 'number') {
value = this.parse(value);
}
return value === null ? NaN : this.getPixelForDecimal((value - this._startValue) / this._valueRange);
}
getPixelForTick(index) {
const ticks = this.ticks;
if (index < 0 || index > ticks.length - 1) {
return null;
}
return this.getPixelForValue(ticks[index].value);
}
getValueForPixel(pixel) {
return Math.round(this._startValue + this.getDecimalForPixel(pixel) * this._valueRange);
}
getBasePixel() {
return this.bottom;
}
}
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){
const tickValue = Math.round((niceMin + j * spacing) * factor) / factor;
if (maxDefined && tickValue > max) {
break;
}
ticks.push({
value: tickValue
});
}
if (maxDefined && includeBounds && niceMax !== max) {
if (ticks.length && 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 { beginAtZero } = this.options;
const { minDefined , maxDefined } = this.getUserBounds();
let { min , max } = this;
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 = max === 0 ? 1 : Math.abs(max * 0.05);
setMax(max + offset);
if (!beginAtZero) {
setMin(min - offset);
}
}
this.min = min;
this.max = max;
}
getTickLimit() {
const tickOpts = this.options.ticks;
let { maxTicksLimit , stepSize } = tickOpts;
let maxTicks;
if (stepSize) {
maxTicks = Math.ceil(this.max / stepSize) - Math.floor(this.min / stepSize) + 1;
if (maxTicks > 1000) {
console.warn(`scales.${this.id}.ticks.stepSize: ${stepSize} would result generating up to ${maxTicks} ticks. Limiting to 1000.`);
maxTicks = 1000;
}
} else {
maxTicks = this.computeTickLimit();
maxTicksLimit = maxTicksLimit || 11;
}
if (maxTicksLimit) {
maxTicks = Math.min(maxTicksLimit, maxTicks);
}
return maxTicks;
}
computeTickLimit() {
return Number.POSITIVE_INFINITY;
}
buildTicks() {
const opts = this.options;
const tickOpts = opts.ticks;
let maxTicks = this.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: this._maxDigits(),
horizontal: this.isHorizontal(),
minRotation: tickOpts.minRotation || 0,
includeBounds: tickOpts.includeBounds !== false
};
const dataRange = this._range || this;
const ticks = generateTicks$1(numericGeneratorOptions, dataRange);
if (opts.bounds === 'ticks') {
_setMinAndMaxByKey(ticks, this, 'value');
}
if (opts.reverse) {
ticks.reverse();
this.start = this.max;
this.end = this.min;
} else {
this.start = this.min;
this.end = this.max;
}
return ticks;
}
configure() {
const ticks = this.ticks;
let start = this.min;
let end = this.max;
super.configure();
if (this.options.offset && ticks.length) {
const offset = (end - start) / Math.max(ticks.length - 1, 1) / 2;
start -= offset;
end += offset;
}
this._startValue = start;
this._endValue = end;
this._valueRange = end - start;
}
getLabelForValue(value) {
return formatNumber(value, this.chart.options.locale, this.options.ticks.format);
}
}
class LinearScale extends LinearScaleBase {
static id = 'linear';
static defaults = {
ticks: {
callback: Ticks.formatters.numeric
}
};
determineDataLimits() {
const { min , max } = this.getMinMax(true);
this.min = isNumberFinite(min) ? min : 0;
this.max = isNumberFinite(max) ? max : 1;
this.handleTickRangeOptions();
}
computeTickLimit() {
const horizontal = this.isHorizontal();
const length = horizontal ? this.width : this.height;
const minRotation = toRadians(this.options.ticks.minRotation);
const ratio = (horizontal ? Math.sin(minRotation) : Math.cos(minRotation)) || 0.001;
const tickFont = this._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;
}
}
const log10Floor = (v)=>Math.floor(log10(v));
const changeExponent = (v, m)=>Math.pow(10, log10Floor(v) + m);
function isMajor(tickVal) {
const remain = tickVal / Math.pow(10, log10Floor(tickVal));
return remain === 1;
}
function steps(min, max, rangeExp) {
const rangeStep = Math.pow(10, rangeExp);
const start = Math.floor(min / rangeStep);
const end = Math.ceil(max / rangeStep);
return end - start;
}
function startExp(min, max) {
const range = max - min;
let rangeExp = log10Floor(range);
while(steps(min, max, rangeExp) > 10){
rangeExp++;
}
while(steps(min, max, rangeExp) < 10){
rangeExp--;
}
return Math.min(rangeExp, log10Floor(min));
}
function generateTicks(generationOptions, { min , max }) {
min = finiteOrDefault(generationOptions.min, min);
const ticks = [];
const minExp = log10Floor(min);
let exp = startExp(min, max);
let precision = exp < 0 ? Math.pow(10, Math.abs(exp)) : 1;
const stepSize = Math.pow(10, exp);
const base = minExp > exp ? Math.pow(10, minExp) : 0;
const start = Math.round((min - base) * precision) / precision;
const offset = Math.floor((min - base) / stepSize / 10) * stepSize * 10;
let significand = Math.floor((start - offset) / Math.pow(10, exp));
let value = finiteOrDefault(generationOptions.min, Math.round((base + offset + significand * Math.pow(10, exp)) * precision) / precision);
while(value < max){
ticks.push({
value,
major: isMajor(value),
significand
});
if (significand >= 10) {
significand = significand < 15 ? 15 : 20;
} else {
significand++;
}
if (significand >= 20) {
exp++;
significand = 2;
precision = exp >= 0 ? 1 : precision;
}
value = Math.round((base + offset + significand * Math.pow(10, exp)) * precision) / precision;
}
const lastTick = finiteOrDefault(generationOptions.max, value);
ticks.push({
value: lastTick,
major: isMajor(lastTick),
significand
});
return ticks;
}
class LogarithmicScale extends Scale {
static id = 'logarithmic';
static defaults = {
ticks: {
callback: Ticks.formatters.logarithmic,
major: {
enabled: true
}
}
};
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 { min , max } = this.getMinMax(true);
this.min = isNumberFinite(min) ? Math.max(0, min) : null;
this.max = isNumberFinite(max) ? Math.max(0, max) : null;
if (this.options.beginAtZero) {
this._zero = true;
}
if (this._zero && this.min !== this._suggestedMin && !isNumberFinite(this._userMin)) {
this.min = min === changeExponent(this.min, 0) ? changeExponent(this.min, -1) : changeExponent(this.min, 0);
}
this.handleTickRangeOptions();
}
handleTickRangeOptions() {
const { minDefined , maxDefined } = this.getUserBounds();
let min = this.min;
let max = this.max;
const setMin = (v)=>min = minDefined ? min : v;
const setMax = (v)=>max = maxDefined ? max : v;
if (min === max) {
if (min <= 0) {
setMin(1);
setMax(10);
} else {
setMin(changeExponent(min, -1));
setMax(changeExponent(max, +1));
}
}
if (min <= 0) {
setMin(changeExponent(max, -1));
}
if (max <= 0) {
setMax(changeExponent(min, +1));
}
this.min = min;
this.max = max;
}
buildTicks() {
const opts = this.options;
const generationOptions = {
min: this._userMin,
max: this._userMax
};
const ticks = generateTicks(generationOptions, this);
if (opts.bounds === 'ticks') {
_setMinAndMaxByKey(ticks, this, 'value');
}
if (opts.reverse) {
ticks.reverse();
this.start = this.max;
this.end = this.min;
} else {
this.start = this.min;
this.end = this.max;
}
return ticks;
}
getLabelForValue(value) {
return value === undefined ? '0' : formatNumber(value, this.chart.options.locale, this.options.ticks.format);
}
configure() {
const start = this.min;
super.configure();
this._startValue = log10(start);
this._valueRange = log10(this.max) - log10(start);
}
getPixelForValue(value) {
if (value === undefined || value === 0) {
value = this.min;
}
if (value === null || isNaN(value)) {
return NaN;
}
return this.getPixelForDecimal(value === this.min ? 0 : (log10(value) - this._startValue) / this._valueRange);
}
getValueForPixel(pixel) {
const decimal = this.getDecimalForPixel(pixel);
return Math.pow(10, this._startValue + decimal * this._valueRange);
}
}
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 orig = {
l: scale.left + scale._padding.left,
r: scale.right - scale._padding.right,
t: scale.top + scale._padding.top,
b: scale.bottom - scale._padding.bottom
};
const limits = Object.assign({}, orig);
const labelSizes = [];
const padding = [];
const valueCount = scale._pointLabels.length;
const pointLabelOpts = scale.options.pointLabels;
const additionalAngle = pointLabelOpts.centerPointLabels ? PI / valueCount : 0;
for(let i = 0; i < valueCount; i++){
const opts = pointLabelOpts.setContext(scale.getPointLabelContext(i));
padding[i] = opts.padding;
const pointPosition = scale.getPointPosition(i, scale.drawingArea + padding[i], additionalAngle);
const plFont = toFont(opts.font);
const textSize = measureLabelSize(scale.ctx, plFont, scale._pointLabels[i]);
labelSizes[i] = textSize;
const angleRadians = _normalizeAngle(scale.getIndexAngle(i) + additionalAngle);
const angle = Math.round(toDegrees(angleRadians));
const hLimits = determineLimits(angle, pointPosition.x, textSize.w, 0, 180);
const vLimits = determineLimits(angle, pointPosition.y, textSize.h, 90, 270);
updateLimits(limits, orig, angleRadians, hLimits, vLimits);
}
scale.setCenterPoint(orig.l - limits.l, limits.r - orig.r, orig.t - limits.t, limits.b - orig.b);
scale._pointLabelItems = buildPointLabelItems(scale, labelSizes, padding);
}
function updateLimits(limits, orig, angle, hLimits, vLimits) {
const sin = Math.abs(Math.sin(angle));
const cos = Math.abs(Math.cos(angle));
let x = 0;
let y = 0;
if (hLimits.start < orig.l) {
x = (orig.l - hLimits.start) / sin;
limits.l = Math.min(limits.l, orig.l - x);
} else if (hLimits.end > orig.r) {
x = (hLimits.end - orig.r) / sin;
limits.r = Math.max(limits.r, orig.r + x);
}
if (vLimits.start < orig.t) {
y = (orig.t - vLimits.start) / cos;
limits.t = Math.min(limits.t, orig.t - y);
} else if (vLimits.end > orig.b) {
y = (vLimits.end - orig.b) / cos;
limits.b = Math.max(limits.b, orig.b + y);
}
}
function createPointLabelItem(scale, index, itemOpts) {
const outerDistance = scale.drawingArea;
const { extra , additionalAngle , padding , size } = itemOpts;
const pointLabelPosition = scale.getPointPosition(index, outerDistance + extra + padding, additionalAngle);
const angle = Math.round(toDegrees(_normalizeAngle(pointLabelPosition.angle + HALF_PI)));
const y = yForAngle(pointLabelPosition.y, size.h, angle);
const textAlign = getTextAlignForAngle(angle);
const left = leftForTextAlign(pointLabelPosition.x, size.w, textAlign);
return {
visible: true,
x: pointLabelPosition.x,
y,
textAlign,
left,
top: y,
right: left + size.w,
bottom: y + size.h
};
}
function isNotOverlapped(item, area) {
if (!area) {
return true;
}
const { left , top , right , bottom } = item;
const apexesInArea = _isPointInArea({
x: left,
y: top
}, area) || _isPointInArea({
x: left,
y: bottom
}, area) || _isPointInArea({
x: right,
y: top
}, area) || _isPointInArea({
x: right,
y: bottom
}, area);
return !apexesInArea;
}
function buildPointLabelItems(scale, labelSizes, padding) {
const items = [];
const valueCount = scale._pointLabels.length;
const opts = scale.options;
const { centerPointLabels , display } = opts.pointLabels;
const itemOpts = {
extra: getTickBackdropHeight(opts) / 2,
additionalAngle: centerPointLabels ? PI / valueCount : 0
};
let area;
for(let i = 0; i < valueCount; i++){
itemOpts.padding = padding[i];
itemOpts.size = labelSizes[i];
const item = createPointLabelItem(scale, i, itemOpts);
items.push(item);
if (display === 'auto') {
item.visible = isNotOverlapped(item, area);
if (item.visible) {
area = item;
}
}
}
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 drawPointLabelBox(ctx, opts, item) {
const { left , top , right , bottom } = item;
const { backdropColor } = opts;
if (!isNullOrUndef(backdropColor)) {
const borderRadius = toTRBLCorners(opts.borderRadius);
const padding = toPadding(opts.backdropPadding);
ctx.fillStyle = backdropColor;
const backdropLeft = left - padding.left;
const backdropTop = top - padding.top;
const backdropWidth = right - left + padding.width;
const backdropHeight = bottom - top + padding.height;
if (Object.values(borderRadius).some((v)=>v !== 0)) {
ctx.beginPath();
addRoundedRectPath(ctx, {
x: backdropLeft,
y: backdropTop,
w: backdropWidth,
h: backdropHeight,
radius: borderRadius
});
ctx.fill();
} else {
ctx.fillRect(backdropLeft, backdropTop, backdropWidth, backdropHeight);
}
}
}
function drawPointLabels(scale, labelCount) {
const { ctx , options: { pointLabels } } = scale;
for(let i = labelCount - 1; i >= 0; i--){
const item = scale._pointLabelItems[i];
if (!item.visible) {
continue;
}
const optsAtIndex = pointLabels.setContext(scale.getPointLabelContext(i));
drawPointLabelBox(ctx, optsAtIndex, item);
const plFont = toFont(optsAtIndex.font);
const { x , y , textAlign } = item;
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, borderOpts) {
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(borderOpts.dash);
ctx.lineDashOffset = borderOpts.dashOffset;
ctx.beginPath();
pathRadiusLine(scale, radius, circular, labelCount);
ctx.closePath();
ctx.stroke();
ctx.restore();
}
function createPointLabelContext(parent, index, label) {
return createContext(parent, {
label,
index,
type: 'pointLabel'
});
}
class RadialLinearScale extends LinearScaleBase {
static id = 'radialLinear';
static 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,
centerPointLabels: false
}
};
static defaultRoutes = {
'angleLines.color': 'borderColor',
'pointLabels.color': 'color',
'ticks.color': 'color'
};
static descriptors = {
angleLines: {
_fallback: 'grid'
}
};
constructor(cfg){
super(cfg);
this.xCenter = undefined;
this.yCenter = undefined;
this.drawingArea = undefined;
this._pointLabels = [];
this._pointLabelItems = [];
}
setDimensions() {
const padding = this._padding = toPadding(getTickBackdropHeight(this.options) / 2);
const w = this.width = this.maxWidth - padding.width;
const h = this.height = this.maxHeight - padding.height;
this.xCenter = Math.floor(this.left + w / 2 + padding.left);
this.yCenter = Math.floor(this.top + h / 2 + padding.top);
this.drawingArea = Math.floor(Math.min(w, h) / 2);
}
determineDataLimits() {
const { min , max } = this.getMinMax(false);
this.min = isNumberFinite(min) && !isNaN(min) ? min : 0;
this.max = isNumberFinite(max) && !isNaN(max) ? max : 0;
this.handleTickRangeOptions();
}
computeTickLimit() {
return Math.ceil(this.drawingArea / getTickBackdropHeight(this.options));
}
generateTickLabels(ticks) {
LinearScaleBase.prototype.generateTickLabels.call(this, ticks);
this._pointLabels = this.getLabels().map((value, index)=>{
const label = callback(this.options.pointLabels.callback, [
value,
index
], this);
return label || label === 0 ? label : '';
}).filter((v, i)=>this.chart.getDataVisibility(i));
}
fit() {
const opts = this.options;
if (opts.display && opts.pointLabels.display) {
fitWithPointLabels(this);
} else {
this.setCenterPoint(0, 0, 0, 0);
}
}
setCenterPoint(leftMovement, rightMovement, topMovement, bottomMovement) {
this.xCenter += Math.floor((leftMovement - rightMovement) / 2);
this.yCenter += Math.floor((topMovement - bottomMovement) / 2);
this.drawingArea -= Math.min(this.drawingArea / 2, Math.max(leftMovement, rightMovement, topMovement, bottomMovement));
}
getIndexAngle(index) {
const angleMultiplier = TAU / (this._pointLabels.length || 1);
const startAngle = this.options.startAngle || 0;
return _normalizeAngle(index * angleMultiplier + toRadians(startAngle));
}
getDistanceFromCenterForValue(value) {
if (isNullOrUndef(value)) {
return NaN;
}
const scalingFactor = this.drawingArea / (this.max - this.min);
if (this.options.reverse) {
return (this.max - value) * scalingFactor;
}
return (value - this.min) * scalingFactor;
}
getValueForDistanceFromCenter(distance) {
if (isNullOrUndef(distance)) {
return NaN;
}
const scaledDistance = distance / (this.drawingArea / (this.max - this.min));
return this.options.reverse ? this.max - scaledDistance : this.min + scaledDistance;
}
getPointLabelContext(index) {
const pointLabels = this._pointLabels || [];
if (index >= 0 && index < pointLabels.length) {
const pointLabel = pointLabels[index];
return createPointLabelContext(this.getContext(), index, pointLabel);
}
}
getPointPosition(index, distanceFromCenter, additionalAngle = 0) {
const angle = this.getIndexAngle(index) - HALF_PI + additionalAngle;
return {
x: Math.cos(angle) * distanceFromCenter + this.xCenter,
y: Math.sin(angle) * distanceFromCenter + this.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 { backgroundColor , grid: { circular } } = this.options;
if (backgroundColor) {
const ctx = this.ctx;
ctx.save();
ctx.beginPath();
pathRadiusLine(this, this.getDistanceFromCenterForValue(this._endValue), circular, this._pointLabels.length);
ctx.closePath();
ctx.fillStyle = backgroundColor;
ctx.fill();
ctx.restore();
}
}
drawGrid() {
const ctx = this.ctx;
const opts = this.options;
const { angleLines , grid , border } = opts;
const labelCount = this._pointLabels.length;
let i, offset, position;
if (opts.pointLabels.display) {
drawPointLabels(this, labelCount);
}
if (grid.display) {
this.ticks.forEach((tick, index)=>{
if (index !== 0 || index === 0 && this.min < 0) {
offset = this.getDistanceFromCenterForValue(tick.value);
const context = this.getContext(index);
const optsAtIndex = grid.setContext(context);
const optsAtIndexBorder = border.setContext(context);
drawRadiusLine(this, optsAtIndex, offset, labelCount, optsAtIndexBorder);
}
});
}
if (angleLines.display) {
ctx.save();
for(i = labelCount - 1; i >= 0; i--){
const optsAtIndex = angleLines.setContext(this.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 = this.getDistanceFromCenterForValue(opts.ticks.reverse ? this.min : this.max);
position = this.getPointPosition(i, offset);
ctx.beginPath();
ctx.moveTo(this.xCenter, this.yCenter);
ctx.lineTo(position.x, position.y);
ctx.stroke();
}
ctx.restore();
}
}
drawBorder() {}
drawLabels() {
const ctx = this.ctx;
const opts = this.options;
const tickOpts = opts.ticks;
if (!tickOpts.display) {
return;
}
const startAngle = this.getIndexAngle(0);
let offset, width;
ctx.save();
ctx.translate(this.xCenter, this.yCenter);
ctx.rotate(startAngle);
ctx.textAlign = 'center';
ctx.textBaseline = 'middle';
this.ticks.forEach((tick, index)=>{
if (index === 0 && this.min >= 0 && !opts.reverse) {
return;
}
const optsAtIndex = tickOpts.setContext(this.getContext(index));
const tickFont = toFont(optsAtIndex.font);
offset = this.getDistanceFromCenterForValue(this.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,
strokeColor: optsAtIndex.textStrokeColor,
strokeWidth: optsAtIndex.textStrokeWidth
});
});
ctx.restore();
}
drawTitle() {}
}
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 = /* #__PURE__ */ 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 {
static id = 'time';
static defaults = {
bounds: 'data',
adapters: {},
time: {
parser: false,
unit: false,
round: false,
isoWeekday: false,
minUnit: 'millisecond',
displayFormats: {}
},
ticks: {
source: 'auto',
callback: false,
major: {
enabled: false
}
}
};
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);
adapter.init(opts);
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 options = this.options;
const adapter = this._adapter;
const unit = options.time.unit || 'day';
let { min , max , minDefined , maxDefined } = this.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(this._getLabelBounds());
if (options.bounds !== 'ticks' || options.ticks.source !== 'labels') {
_applyBounds(this.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;
this.min = Math.min(min, max - 1);
this.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 options = this.options;
const timeOpts = options.time;
const tickOpts = options.ticks;
const timestamps = tickOpts.source === 'labels' ? this.getLabelTimestamps() : this._generate();
if (options.bounds === 'ticks' && timestamps.length) {
this.min = this._userMin || timestamps[0];
this.max = this._userMax || timestamps[timestamps.length - 1];
}
const min = this.min;
const max = this.max;
const ticks = _filterBetween(timestamps, min, max);
this._unit = timeOpts.unit || (tickOpts.autoSkip ? determineUnitForAutoTicks(timeOpts.minUnit, this.min, this.max, this._getLabelCapacity(min)) : determineUnitForFormatting(this, ticks.length, timeOpts.minUnit, this.min, this.max));
this._majorUnit = !tickOpts.major.enabled || this._unit === 'year' ? undefined : determineMajorUnit(this._unit);
this.initOffsets(timestamps);
if (options.reverse) {
ticks.reverse();
}
return ticksFromTimestamps(this, ticks, this._majorUnit);
}
afterAutoSkip() {
if (this.options.offsetAfterAutoskip) {
this.initOffsets(this.ticks.map((tick)=>+tick.value));
}
}
initOffsets(timestamps = []) {
let start = 0;
let end = 0;
let first, last;
if (this.options.offset && timestamps.length) {
first = this.getDecimalForValue(timestamps[0]);
if (timestamps.length === 1) {
start = 1 - first;
} else {
start = (this.getDecimalForValue(timestamps[1]) - first) / 2;
}
last = this.getDecimalForValue(timestamps[timestamps.length - 1]);
if (timestamps.length === 1) {
end = last;
} else {
end = (last - this.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);
this._offsets = {
start,
end,
factor: 1 / (start + 1 + end)
};
}
_generate() {
const adapter = this._adapter;
const min = this.min;
const max = this.max;
const options = this.options;
const timeOpts = options.time;
const minor = timeOpts.unit || determineUnitForAutoTicks(timeOpts.minUnit, min, max, this._getLabelCapacity(min));
const stepSize = valueOrDefault(options.ticks.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' && this.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(sorter).map((x)=>+x);
}
getLabelForValue(value) {
const adapter = this._adapter;
const timeOpts = this.options.time;
if (timeOpts.tooltipFormat) {
return adapter.format(value, timeOpts.tooltipFormat);
}
return adapter.format(value, timeOpts.displayFormats.datetime);
}
format(value, format) {
const options = this.options;
const formats = options.time.displayFormats;
const unit = this._unit;
const fmt = format || formats[unit];
return this._adapter.format(value, fmt);
}
_tickFormatFunction(time, index, ticks, format) {
const options = this.options;
const formatter = options.ticks.callback;
if (formatter) {
return callback(formatter, [
time,
index,
ticks
], this);
}
const formats = options.time.displayFormats;
const unit = this._unit;
const majorUnit = this._majorUnit;
const minorFormat = unit && formats[unit];
const majorFormat = majorUnit && formats[majorUnit];
const tick = ticks[index];
const major = majorUnit && majorFormat && tick && tick.major;
return this._adapter.format(time, format || (major ? majorFormat : minorFormat));
}
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) {
return value === null ? NaN : (value - this.min) / (this.max - this.min);
}
getPixelForValue(value) {
const offsets = this._offsets;
const pos = this.getDecimalForValue(value);
return this.getPixelForDecimal((offsets.start + pos) * offsets.factor);
}
getValueForPixel(pixel) {
const offsets = this._offsets;
const pos = this.getDecimalForPixel(pixel) / offsets.factor - offsets.end;
return this.min + pos * (this.max - this.min);
}
_getLabelSize(label) {
const ticksOpts = this.options.ticks;
const tickLabelWidth = this.ctx.measureText(label).width;
const angle = toRadians(this.isHorizontal() ? ticksOpts.maxRotation : ticksOpts.minRotation);
const cosRotation = Math.cos(angle);
const sinRotation = Math.sin(angle);
const tickFontSize = this._resolveTickFontOptions(0).size;
return {
w: tickLabelWidth * cosRotation + tickFontSize * sinRotation,
h: tickLabelWidth * sinRotation + tickFontSize * cosRotation
};
}
_getLabelCapacity(exampleTime) {
const timeOpts = this.options.time;
const displayFormats = timeOpts.displayFormats;
const format = displayFormats[timeOpts.unit] || displayFormats.millisecond;
const exampleLabel = this._tickFormatFunction(exampleTime, 0, ticksFromTimestamps(this, [
exampleTime
], this._majorUnit), format);
const size = this._getLabelSize(exampleLabel);
const capacity = Math.floor(this.isHorizontal() ? this.width / size.w : this.height / size.h) - 1;
return capacity > 0 ? capacity : 1;
}
getDataTimestamps() {
let timestamps = this._cache.data || [];
let i, ilen;
if (timestamps.length) {
return timestamps;
}
const metas = this.getMatchingVisibleMetas();
if (this._normalized && metas.length) {
return this._cache.data = metas[0].controller.getAllParsedValues(this);
}
for(i = 0, ilen = metas.length; i < ilen; ++i){
timestamps = timestamps.concat(metas[i].controller.getAllParsedValues(this));
}
return this._cache.data = this.normalize(timestamps);
}
getLabelTimestamps() {
const timestamps = this._cache.labels || [];
let i, ilen;
if (timestamps.length) {
return timestamps;
}
const labels = this.getLabels();
for(i = 0, ilen = labels.length; i < ilen; ++i){
timestamps.push(parse(this, labels[i]));
}
return this._cache.labels = this._normalized ? timestamps : this.normalize(timestamps);
}
normalize(values) {
return _arrayUnique(values.sort(sorter));
}
}
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 {
static id = 'timeseries';
static defaults = TimeScale.defaults;
constructor(props){
super(props);
this._table = [];
this._minPos = undefined;
this._tableRange = undefined;
}
initOffsets() {
const timestamps = this._getTimestampsForTable();
const table = this._table = this.buildLookupTable(timestamps);
this._minPos = interpolate(table, this.min);
this._tableRange = interpolate(table, this.max) - this._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;
}
_generate() {
const min = this.min;
const max = this.max;
let timestamps = super.getDataTimestamps();
if (!timestamps.includes(min) || !timestamps.length) {
timestamps.splice(0, 0, min);
}
if (!timestamps.includes(max) || timestamps.length === 1) {
timestamps.push(max);
}
return timestamps.sort((a, b)=>a - b);
}
_getTimestampsForTable() {
let timestamps = this._cache.all || [];
if (timestamps.length) {
return timestamps;
}
const data = this.getDataTimestamps();
const label = this.getLabelTimestamps();
if (data.length && label.length) {
timestamps = this.normalize(data.concat(label));
} else {
timestamps = data.length ? data : label;
}
timestamps = this._cache.all = timestamps;
return timestamps;
}
getDecimalForValue(value) {
return (interpolate(this._table, value) - this._minPos) / this._tableRange;
}
getValueForPixel(pixel) {
const offsets = this._offsets;
const decimal = this.getDecimalForPixel(pixel) / offsets.factor - offsets.end;
return interpolate(this._table, decimal * this._tableRange + this._minPos, true);
}
}
var scales = /*#__PURE__*/Object.freeze({
__proto__: null,
CategoryScale: CategoryScale,
LinearScale: LinearScale,
LogarithmicScale: LogarithmicScale,
RadialLinearScale: RadialLinearScale,
TimeScale: TimeScale,
TimeSeriesScale: TimeSeriesScale
});
const BORDER_COLORS = [
'rgb(54, 162, 235)',
'rgb(255, 99, 132)',
'rgb(255, 159, 64)',
'rgb(255, 205, 86)',
'rgb(75, 192, 192)',
'rgb(153, 102, 255)',
'rgb(201, 203, 207)' // grey
];
// Border colors with 50% transparency
const BACKGROUND_COLORS = /* #__PURE__ */ BORDER_COLORS.map((color)=>color.replace('rgb(', 'rgba(').replace(')', ', 0.5)'));
function getBorderColor(i) {
return BORDER_COLORS[i % BORDER_COLORS.length];
}
function getBackgroundColor(i) {
return BACKGROUND_COLORS[i % BACKGROUND_COLORS.length];
}
function colorizeDefaultDataset(dataset, i) {
dataset.borderColor = getBorderColor(i);
dataset.backgroundColor = getBackgroundColor(i);
return ++i;
}
function colorizeDoughnutDataset(dataset, i) {
dataset.backgroundColor = dataset.data.map(()=>getBorderColor(i++));
return i;
}
function colorizePolarAreaDataset(dataset, i) {
dataset.backgroundColor = dataset.data.map(()=>getBackgroundColor(i++));
return i;
}
function getColorizer(chart) {
let i = 0;
return (dataset, datasetIndex)=>{
const controller = chart.getDatasetMeta(datasetIndex).controller;
if (controller instanceof DoughnutController) {
i = colorizeDoughnutDataset(dataset, i);
} else if (controller instanceof PolarAreaController) {
i = colorizePolarAreaDataset(dataset, i);
} else if (controller) {
i = colorizeDefaultDataset(dataset, i);
}
};
}
function containsColorsDefinitions(descriptors) {
let k;
for(k in descriptors){
if (descriptors[k].borderColor || descriptors[k].backgroundColor) {
return true;
}
}
return false;
}
function containsColorsDefinition(descriptor) {
return descriptor && (descriptor.borderColor || descriptor.backgroundColor);
}
var plugin_colors = {
id: 'colors',
defaults: {
enabled: true,
forceOverride: false
},
beforeLayout (chart, _args, options) {
if (!options.enabled) {
return;
}
const { data: { datasets } , options: chartOptions } = chart.config;
const { elements } = chartOptions;
if (!options.forceOverride && (containsColorsDefinitions(datasets) || containsColorsDefinition(chartOptions) || elements && containsColorsDefinitions(elements))) {
return;
}
const colorizer = getColorizer(chart);
datasets.forEach(colorizer);
}
};
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', {
configurable: true,
enumerable: true,
writable: true,
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.controller.supportsDecimation) {
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 _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 _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 _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 _findSegmentEnd(start, end, points) {
for(; end > start; end--){
const point = points[end];
if (!isNaN(point.x) && !isNaN(point.y)) {
break;
}
}
return 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 _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 _shouldApplyFill(source) {
return source && source.fill !== false;
}
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 _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) {
return decodeTargetIndex(fill[0], index, target, count);
}
return [
'origin',
'start',
'end',
'stack',
'shape'
].indexOf(fill) >= 0 && fill;
}
function decodeTargetIndex(firstCh, index, target, count) {
if (firstCh === '-' || firstCh === '+') {
target = index + target;
}
if (target === index || target < 0 || target >= count) {
return false;
}
return target;
}
function _getTargetPixel(fill, scale) {
let pixel = null;
if (fill === 'start') {
pixel = scale.bottom;
} else if (fill === 'end') {
pixel = scale.top;
} else if (isObject(fill)) {
pixel = scale.getPixelForValue(fill.value);
} else if (scale.getBasePixel) {
pixel = scale.getBasePixel();
}
return pixel;
}
function _getTargetValue(fill, scale, startValue) {
let value;
if (fill === 'start') {
value = startValue;
} else if (fill === 'end') {
value = scale.options.reverse ? scale.min : scale.max;
} else if (isObject(fill)) {
value = fill.value;
} else {
value = scale.getBaseValue();
}
return value;
}
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 _buildStackLine(source) {
const { scale , index , line } = source;
const points = [];
const segments = line.segments;
const sourcePoints = line.points;
const linesBelow = getLinesBelow(scale, 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: {}
});
}
function getLinesBelow(scale, index) {
const below = [];
const metas = scale.getMatchingVisibleMetas('line');
for(let i = 0; i < metas.length; i++){
const meta = metas[i];
if (meta.index === index) {
break;
}
if (!meta.hidden) {
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 (_isBetween(pointValue, firstValue, lastValue)) {
first = pointValue === firstValue;
last = pointValue === lastValue;
break;
}
}
return {
first,
last,
point
};
}
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 _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 getLineByIndex(chart, index) {
const meta = chart.getDatasetMeta(index);
const visible = meta && chart.isDatasetVisible(index);
return visible ? meta.dataset : null;
}
function computeBoundary(source) {
const scale = source.scale || {};
if (scale.getPointPositionForValue) {
return computeCircularBoundary(source);
}
return computeLinearBoundary(source);
}
function computeLinearBoundary(source) {
const { scale ={} , fill } = source;
const pixel = _getTargetPixel(fill, scale);
if (isNumberFinite(pixel)) {
const horizontal = scale.isHorizontal();
return {
x: horizontal ? pixel : null,
y: horizontal ? null : pixel
};
}
return null;
}
function computeCircularBoundary(source) {
const { scale , fill } = source;
const options = scale.options;
const length = scale.getLabels().length;
const start = options.reverse ? scale.max : scale.min;
const value = _getTargetValue(fill, scale, start);
const target = [];
if (options.grid.circular) {
const center = scale.getPointPositionForValue(0, start);
return new simpleArc({
x: center.x,
y: center.y,
radius: scale.getDistanceFromCenterForValue(value)
});
}
for(let i = 0; i < length; ++i){
target.push(scale.getPointPositionForValue(i, value));
}
return target;
}
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);
}
}
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) {
clipVertical(ctx, target, area.top);
fill(ctx, {
line,
target,
color: above,
scale,
property
});
ctx.restore();
ctx.save();
clipVertical(ctx, target, area.bottom);
}
fill(ctx, {
line,
target,
color: below,
scale,
property
});
ctx.restore();
}
function clipVertical(ctx, target, clipY) {
const { segments , points } = target;
let first = true;
let lineLoop = false;
ctx.beginPath();
for (const segment of segments){
const { start , end } = segment;
const firstPoint = points[start];
const lastPoint = points[_findSegmentEnd(start, end, points)];
if (first) {
ctx.moveTo(firstPoint.x, firstPoint.y);
first = false;
} else {
ctx.lineTo(firstPoint.x, clipY);
ctx.lineTo(firstPoint.x, firstPoint.y);
}
lineLoop = !!target.pathSegment(ctx, segment, {
move: lineLoop
});
if (lineLoop) {
ctx.closePath();
} else {
ctx.lineTo(lastPoint.x, clipY);
}
}
ctx.lineTo(target.first().x, clipY);
ctx.closePath();
ctx.clip();
}
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 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);
}
}
var index = {
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 && source.fill) {
_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].$filler;
if (_shouldApplyFill(source)) {
_drawfill(chart.ctx, source, chart.chartArea);
}
}
},
beforeDatasetDraw (chart, args, options) {
const source = args.meta.$filler;
if (!_shouldApplyFill(source) || 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 = labelOpts.pointStyleWidth || 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) {
this.maxWidth = maxWidth;
this.maxHeight = maxHeight;
this._margins = margins;
this.setDimensions();
this.buildLabels();
this.fit();
}
setDimensions() {
if (this.isHorizontal()) {
this.width = this.maxWidth;
this.left = this._margins.left;
this.right = this.width;
} else {
this.height = this.maxHeight;
this.top = this._margins.top;
this.bottom = this.height;
}
}
buildLabels() {
const labelOpts = this.options.labels || {};
let legendItems = callback(labelOpts.generateLabels, [
this.chart
], this) || [];
if (labelOpts.filter) {
legendItems = legendItems.filter((item)=>labelOpts.filter(item, this.chart.data));
}
if (labelOpts.sort) {
legendItems = legendItems.sort((a, b)=>labelOpts.sort(a, b, this.chart.data));
}
if (this.options.reverse) {
legendItems.reverse();
}
this.legendItems = legendItems;
}
fit() {
const { options , ctx } = this;
if (!options.display) {
this.width = this.height = 0;
return;
}
const labelOpts = options.labels;
const labelFont = toFont(labelOpts.font);
const fontSize = labelFont.size;
const titleHeight = this._computeTitleHeight();
const { boxWidth , itemHeight } = getBoxSize(labelOpts, fontSize);
let width, height;
ctx.font = labelFont.string;
if (this.isHorizontal()) {
width = this.maxWidth;
height = this._fitRows(titleHeight, fontSize, boxWidth, itemHeight) + 10;
} else {
height = this.maxHeight;
width = this._fitCols(titleHeight, labelFont, boxWidth, itemHeight) + 10;
}
this.width = Math.min(width, options.maxWidth || this.maxWidth);
this.height = Math.min(height, options.maxHeight || this.maxHeight);
}
_fitRows(titleHeight, fontSize, boxWidth, itemHeight) {
const { ctx , maxWidth , options: { labels: { padding } } } = this;
const hitboxes = this.legendHitBoxes = [];
const lineWidths = this.lineWidths = [
0
];
const lineHeight = itemHeight + padding;
let totalHeight = titleHeight;
ctx.textAlign = 'left';
ctx.textBaseline = 'middle';
let row = -1;
let top = -lineHeight;
this.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, labelFont, boxWidth, _itemHeight) {
const { ctx , maxHeight , options: { labels: { padding } } } = this;
const hitboxes = this.legendHitBoxes = [];
const columnSizes = this.columnSizes = [];
const heightLimit = maxHeight - titleHeight;
let totalWidth = padding;
let currentColWidth = 0;
let currentColHeight = 0;
let left = 0;
let col = 0;
this.legendItems.forEach((legendItem, i)=>{
const { itemWidth , itemHeight } = calculateItemSize(boxWidth, labelFont, ctx, legendItem, _itemHeight);
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() {
if (!this.options.display) {
return;
}
const titleHeight = this._computeTitleHeight();
const { legendHitBoxes: hitboxes , options: { align , labels: { padding } , rtl } } = this;
const rtlHelper = getRtlAdapter(rtl, this.left, this.width);
if (this.isHorizontal()) {
let row = 0;
let left = _alignStartEnd(align, this.left + padding, this.right - this.lineWidths[row]);
for (const hitbox of hitboxes){
if (row !== hitbox.row) {
row = hitbox.row;
left = _alignStartEnd(align, this.left + padding, this.right - this.lineWidths[row]);
}
hitbox.top += this.top + titleHeight + padding;
hitbox.left = rtlHelper.leftForLtr(rtlHelper.x(left), hitbox.width);
left += hitbox.width + padding;
}
} else {
let col = 0;
let top = _alignStartEnd(align, this.top + titleHeight + padding, this.bottom - this.columnSizes[col].height);
for (const hitbox of hitboxes){
if (hitbox.col !== col) {
col = hitbox.col;
top = _alignStartEnd(align, this.top + titleHeight + padding, this.bottom - this.columnSizes[col].height);
}
hitbox.top = top;
hitbox.left += this.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() {
if (this.options.display) {
const ctx = this.ctx;
clipArea(ctx, this);
this._draw();
unclipArea(ctx);
}
}
_draw() {
const { options: opts , columnSizes , lineWidths , ctx } = this;
const { align , labels: labelOpts } = opts;
const defaultColor = defaults.color;
const rtlHelper = getRtlAdapter(opts.rtl, this.left, this.width);
const labelFont = toFont(labelOpts.font);
const { padding } = labelOpts;
const fontSize = labelFont.size;
const halfFontSize = fontSize / 2;
let cursor;
this.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: boxHeight * Math.SQRT2 / 2,
pointStyle: legendItem.pointStyle,
rotation: legendItem.rotation,
borderWidth: lineWidth
};
const centerX = rtlHelper.xPlus(x, boxWidth / 2);
const centerY = y + halfFontSize;
drawPointLegend(ctx, drawOptions, centerX, centerY, labelOpts.pointStyleWidth && boxWidth);
} 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 = this.isHorizontal();
const titleHeight = this._computeTitleHeight();
if (isHorizontal) {
cursor = {
x: _alignStartEnd(align, this.left + padding, this.right - lineWidths[0]),
y: this.top + padding + titleHeight,
line: 0
};
} else {
cursor = {
x: this.left + padding,
y: _alignStartEnd(align, this.top + titleHeight + padding, this.bottom - columnSizes[0].height),
line: 0
};
}
overrideTextDirection(this.ctx, opts.textDirection);
const lineHeight = itemHeight + padding;
this.legendItems.forEach((legendItem, i)=>{
ctx.strokeStyle = legendItem.fontColor;
ctx.fillStyle = legendItem.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(this.width);
if (isHorizontal) {
if (i > 0 && x + width + padding > this.right) {
y = cursor.y += lineHeight;
cursor.line++;
x = cursor.x = _alignStartEnd(align, this.left + padding, this.right - lineWidths[cursor.line]);
}
} else if (i > 0 && y + lineHeight > this.bottom) {
x = cursor.x = x + columnSizes[cursor.line].width + padding;
cursor.line++;
y = cursor.y = _alignStartEnd(align, this.top + titleHeight + padding, this.bottom - columnSizes[cursor.line].height);
}
const realX = rtlHelper.x(x);
drawLegendBox(realX, y, legendItem);
x = _textX(textAlign, x + boxWidth + halfFontSize, isHorizontal ? x + width : this.right, opts.rtl);
fillText(rtlHelper.x(x), y, legendItem);
if (isHorizontal) {
cursor.x += width + padding;
} else if (typeof legendItem.text !== 'string') {
const fontLineHeight = labelFont.lineHeight;
cursor.y += calculateLegendItemHeight(legendItem, fontLineHeight) + padding;
} else {
cursor.y += lineHeight;
}
});
restoreTextDirection(this.ctx, opts.textDirection);
}
drawTitle() {
const opts = this.options;
const titleOpts = opts.title;
const titleFont = toFont(titleOpts.font);
const titlePadding = toPadding(titleOpts.padding);
if (!titleOpts.display) {
return;
}
const rtlHelper = getRtlAdapter(opts.rtl, this.left, this.width);
const ctx = this.ctx;
const position = titleOpts.position;
const halfFontSize = titleFont.size / 2;
const topPaddingPlusHalfFontSize = titlePadding.top + halfFontSize;
let y;
let left = this.left;
let maxWidth = this.width;
if (this.isHorizontal()) {
maxWidth = Math.max(...this.lineWidths);
y = this.top + topPaddingPlusHalfFontSize;
left = _alignStartEnd(opts.align, left, this.right - maxWidth);
} else {
const maxHeight = this.columnSizes.reduce((acc, size)=>Math.max(acc, size.height), 0);
y = topPaddingPlusHalfFontSize + _alignStartEnd(opts.align, this.top, this.bottom - maxHeight - opts.labels.padding - this._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) {
let i, hitBox, lh;
if (_isBetween(x, this.left, this.right) && _isBetween(y, this.top, this.bottom)) {
lh = this.legendHitBoxes;
for(i = 0; i < lh.length; ++i){
hitBox = lh[i];
if (_isBetween(x, hitBox.left, hitBox.left + hitBox.width) && _isBetween(y, hitBox.top, hitBox.top + hitBox.height)) {
return this.legendItems[i];
}
}
}
return null;
}
handleEvent(e) {
const opts = this.options;
if (!isListened(e.type, opts)) {
return;
}
const hoveredItem = this._getLegendItemAt(e.x, e.y);
if (e.type === 'mousemove' || e.type === 'mouseout') {
const previous = this._hoveredItem;
const sameItem = itemsEqual(previous, hoveredItem);
if (previous && !sameItem) {
callback(opts.onLeave, [
e,
previous,
this
], this);
}
this._hoveredItem = hoveredItem;
if (hoveredItem && !sameItem) {
callback(opts.onHover, [
e,
hoveredItem,
this
], this);
}
} else if (hoveredItem) {
callback(opts.onClick, [
e,
hoveredItem,
this
], this);
}
}
}
function calculateItemSize(boxWidth, labelFont, ctx, legendItem, _itemHeight) {
const itemWidth = calculateItemWidth(legendItem, boxWidth, labelFont, ctx);
const itemHeight = calculateItemHeight(_itemHeight, legendItem, labelFont.lineHeight);
return {
itemWidth,
itemHeight
};
}
function calculateItemWidth(legendItem, boxWidth, labelFont, ctx) {
let legendItemText = legendItem.text;
if (legendItemText && typeof legendItemText !== 'string') {
legendItemText = legendItemText.reduce((a, b)=>a.length > b.length ? a : b);
}
return boxWidth + labelFont.size / 2 + ctx.measureText(legendItemText).width;
}
function calculateItemHeight(_itemHeight, legendItem, fontLineHeight) {
let itemHeight = _itemHeight;
if (typeof legendItem.text !== 'string') {
itemHeight = calculateLegendItemHeight(legendItem, fontLineHeight);
}
return itemHeight;
}
function calculateLegendItemHeight(legendItem, fontLineHeight) {
const labelHeight = legendItem.text ? legendItem.text.length : 0;
return fontLineHeight * labelHeight;
}
function isListened(type, opts) {
if ((type === 'mousemove' || type === 'mouseout') && (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 , useBorderRadius , borderRadius } } = 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: useBorderRadius && (borderRadius || style.borderRadius),
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 opts = this.options;
this.left = 0;
this.top = 0;
if (!opts.display) {
this.width = this.height = this.right = this.bottom = 0;
return;
}
this.width = this.right = maxWidth;
this.height = this.bottom = maxHeight;
const lineCount = isArray(opts.text) ? opts.text.length : 1;
this._padding = toPadding(opts.padding);
const textSize = lineCount * toFont(opts.font).lineHeight + this._padding.height;
if (this.isHorizontal()) {
this.height = textSize;
} else {
this.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 ctx = this.ctx;
const opts = this.options;
if (!opts.display) {
return;
}
const fontOpts = toFont(opts.font);
const lineHeight = fontOpts.lineHeight;
const offset = lineHeight / 2 + this._padding.top;
const { titleX , titleY , maxWidth , rotation } = this._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 xSet = new Set();
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();
xSet.add(pos.x);
y += pos.y;
++count;
}
}
const xAverage = [
...xSet
].reduce((a, b)=>a + b) / xSet.size;
return {
x: xAverage,
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 + options.boxPadding : 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 = size.yAlign || options.yAlign || determineYAlign(chart, size);
return {
xAlign: size.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 { topLeft , topRight , bottomLeft , bottomRight } = toTRBLCorners(cornerRadius);
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 -= Math.max(topLeft, bottomLeft) + caretSize;
} else if (xAlign === 'right') {
x += Math.max(topRight, bottomRight) + caretSize;
}
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 createContext(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;
}
const defaultCallbacks = {
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
};
function invokeCallbackWithFallback(callbacks, name, ctx, arg) {
const result = callbacks[name].call(ctx, arg);
if (typeof result === 'undefined') {
return defaultCallbacks[name].call(ctx, arg);
}
return result;
}
class Tooltip extends Element {
static positioners = positioners;
constructor(config){
super();
this.opacity = 0;
this._active = [];
this._eventPosition = undefined;
this._size = undefined;
this._cachedAnimations = undefined;
this._tooltipItems = [];
this.$animations = undefined;
this.$context = undefined;
this.chart = config.chart;
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.$context = undefined;
}
_resolveAnimations() {
const cached = this._cachedAnimations;
if (cached) {
return cached;
}
const chart = this.chart;
const options = this.options.setContext(this.getContext());
const opts = options.enabled && chart.options.animation && options.animations;
const animations = new Animations(this.chart, opts);
if (opts._cacheable) {
this._cachedAnimations = Object.freeze(animations);
}
return animations;
}
getContext() {
return this.$context || (this.$context = createTooltipContext(this.chart.getContext(), this, this._tooltipItems));
}
getTitle(context, options) {
const { callbacks } = options;
const beforeTitle = invokeCallbackWithFallback(callbacks, 'beforeTitle', this, context);
const title = invokeCallbackWithFallback(callbacks, 'title', this, context);
const afterTitle = invokeCallbackWithFallback(callbacks, 'afterTitle', this, 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(invokeCallbackWithFallback(options.callbacks, 'beforeBody', this, tooltipItems));
}
getBody(tooltipItems, options) {
const { callbacks } = options;
const bodyItems = [];
each(tooltipItems, (context)=>{
const bodyItem = {
before: [],
lines: [],
after: []
};
const scoped = overrideCallbacks(callbacks, context);
pushOrConcat(bodyItem.before, splitNewlines(invokeCallbackWithFallback(scoped, 'beforeLabel', this, context)));
pushOrConcat(bodyItem.lines, invokeCallbackWithFallback(scoped, 'label', this, context));
pushOrConcat(bodyItem.after, splitNewlines(invokeCallbackWithFallback(scoped, 'afterLabel', this, context)));
bodyItems.push(bodyItem);
});
return bodyItems;
}
getAfterBody(tooltipItems, options) {
return getBeforeAfterBodyLines(invokeCallbackWithFallback(options.callbacks, 'afterBody', this, tooltipItems));
}
getFooter(tooltipItems, options) {
const { callbacks } = options;
const beforeFooter = invokeCallbackWithFallback(callbacks, 'beforeFooter', this, tooltipItems);
const footer = invokeCallbackWithFallback(callbacks, 'footer', this, tooltipItems);
const afterFooter = invokeCallbackWithFallback(callbacks, 'afterFooter', this, tooltipItems);
let lines = [];
lines = pushOrConcat(lines, splitNewlines(beforeFooter));
lines = pushOrConcat(lines, splitNewlines(footer));
lines = pushOrConcat(lines, splitNewlines(afterFooter));
return lines;
}
_createItems(options) {
const active = this._active;
const data = this.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(this.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(invokeCallbackWithFallback(scoped, 'labelColor', this, context));
labelPointStyles.push(invokeCallbackWithFallback(scoped, 'labelPointStyle', this, context));
labelTextColors.push(invokeCallbackWithFallback(scoped, 'labelTextColor', this, context));
});
this.labelColors = labelColors;
this.labelPointStyles = labelPointStyles;
this.labelTextColors = labelTextColors;
this.dataPoints = tooltipItems;
return tooltipItems;
}
update(changed, replay) {
const options = this.options.setContext(this.getContext());
const active = this._active;
let properties;
let tooltipItems = [];
if (!active.length) {
if (this.opacity !== 0) {
properties = {
opacity: 0
};
}
} else {
const position = positioners[options.position].call(this, active, this._eventPosition);
tooltipItems = this._createItems(options);
this.title = this.getTitle(tooltipItems, options);
this.beforeBody = this.getBeforeBody(tooltipItems, options);
this.body = this.getBody(tooltipItems, options);
this.afterBody = this.getAfterBody(tooltipItems, options);
this.footer = this.getFooter(tooltipItems, options);
const size = this._size = getTooltipSize(this, options);
const positionAndSize = Object.assign({}, position, size);
const alignment = determineAlignment(this.chart, options, positionAndSize);
const backgroundPoint = getBackgroundPoint(options, positionAndSize, alignment, this.chart);
this.xAlign = alignment.xAlign;
this.yAlign = alignment.yAlign;
properties = {
opacity: 1,
x: backgroundPoint.x,
y: backgroundPoint.y,
width: size.width,
height: size.height,
caretX: position.x,
caretY: position.y
};
}
this._tooltipItems = tooltipItems;
this.$context = undefined;
if (properties) {
this._resolveAnimations().update(this, properties);
}
if (changed && options.external) {
options.external.call(this, {
chart: this.chart,
tooltip: this,
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 { caretSize , cornerRadius } = options;
const { topLeft , topRight , bottomLeft , bottomRight } = toTRBLCorners(cornerRadius);
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 + Math.max(topLeft, bottomLeft) + caretSize;
} else if (xAlign === 'right') {
x2 = ptX + width - Math.max(topRight, bottomRight) - 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 title = this.title;
const length = title.length;
let titleFont, titleSpacing, i;
if (length) {
const rtlHelper = getRtlAdapter(options.rtl, this.x, this.width);
pt.x = getAlignedX(this, 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 labelColor = this.labelColors[i];
const labelPointStyle = this.labelPointStyles[i];
const { boxHeight , boxWidth } = options;
const bodyFont = toFont(options.bodyFont);
const colorX = getAlignedX(this, '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 = labelColor.borderColor;
ctx.fillStyle = labelColor.backgroundColor;
drawPoint(ctx, drawOptions, centerX, centerY);
} else {
ctx.lineWidth = isObject(labelColor.borderWidth) ? Math.max(...Object.values(labelColor.borderWidth)) : labelColor.borderWidth || 1;
ctx.strokeStyle = labelColor.borderColor;
ctx.setLineDash(labelColor.borderDash || []);
ctx.lineDashOffset = labelColor.borderDashOffset || 0;
const outerX = rtlHelper.leftForLtr(rtlColorX, boxWidth);
const innerX = rtlHelper.leftForLtr(rtlHelper.xPlus(rtlColorX, 1), boxWidth - 2);
const borderRadius = toTRBLCorners(labelColor.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 = labelColor.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 = labelColor.backgroundColor;
ctx.fillRect(innerX, colorY + 1, boxWidth - 2, boxHeight - 2);
}
}
ctx.fillStyle = this.labelTextColors[i];
}
drawBody(pt, ctx, options) {
const { body } = this;
const { bodySpacing , bodyAlign , displayColors , boxHeight , boxWidth , boxPadding } = options;
const bodyFont = toFont(options.bodyFont);
let bodyLineHeight = bodyFont.lineHeight;
let xLinePadding = 0;
const rtlHelper = getRtlAdapter(options.rtl, this.x, this.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(this, bodyAlignForCalculation, options);
ctx.fillStyle = options.bodyColor;
each(this.beforeBody, fillLineOfText);
xLinePadding = displayColors && bodyAlignForCalculation !== 'right' ? bodyAlign === 'center' ? boxWidth / 2 + boxPadding : boxWidth + 2 + boxPadding : 0;
for(i = 0, ilen = body.length; i < ilen; ++i){
bodyItem = body[i];
textColor = this.labelTextColors[i];
ctx.fillStyle = textColor;
each(bodyItem.before, fillLineOfText);
lines = bodyItem.lines;
if (displayColors && lines.length) {
this._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(this.afterBody, fillLineOfText);
pt.y -= bodySpacing;
}
drawFooter(pt, ctx, options) {
const footer = this.footer;
const length = footer.length;
let footerFont, i;
if (length) {
const rtlHelper = getRtlAdapter(options.rtl, this.x, this.width);
pt.x = getAlignedX(this, 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 { topLeft , topRight , bottomLeft , bottomRight } = toTRBLCorners(options.cornerRadius);
ctx.fillStyle = options.backgroundColor;
ctx.strokeStyle = options.borderColor;
ctx.lineWidth = options.borderWidth;
ctx.beginPath();
ctx.moveTo(x + topLeft, y);
if (yAlign === 'top') {
this.drawCaret(pt, ctx, tooltipSize, options);
}
ctx.lineTo(x + width - topRight, y);
ctx.quadraticCurveTo(x + width, y, x + width, y + topRight);
if (yAlign === 'center' && xAlign === 'right') {
this.drawCaret(pt, ctx, tooltipSize, options);
}
ctx.lineTo(x + width, y + height - bottomRight);
ctx.quadraticCurveTo(x + width, y + height, x + width - bottomRight, y + height);
if (yAlign === 'bottom') {
this.drawCaret(pt, ctx, tooltipSize, options);
}
ctx.lineTo(x + bottomLeft, y + height);
ctx.quadraticCurveTo(x, y + height, x, y + height - bottomLeft);
if (yAlign === 'center' && xAlign === 'left') {
this.drawCaret(pt, ctx, tooltipSize, options);
}
ctx.lineTo(x, y + topLeft);
ctx.quadraticCurveTo(x, y, x + topLeft, y);
ctx.closePath();
ctx.fill();
if (options.borderWidth > 0) {
ctx.stroke();
}
}
_updateAnimationTarget(options) {
const chart = this.chart;
const anims = this.$animations;
const animX = anims && anims.x;
const animY = anims && anims.y;
if (animX || animY) {
const position = positioners[options.position].call(this, this._active, this._eventPosition);
if (!position) {
return;
}
const size = this._size = getTooltipSize(this, options);
const positionAndSize = Object.assign({}, position, this._size);
const alignment = determineAlignment(chart, options, positionAndSize);
const point = getBackgroundPoint(options, positionAndSize, alignment, chart);
if (animX._to !== point.x || animY._to !== point.y) {
this.xAlign = alignment.xAlign;
this.yAlign = alignment.yAlign;
this.width = size.width;
this.height = size.height;
this.caretX = position.x;
this.caretY = position.y;
this._resolveAnimations().update(this, point);
}
}
}
_willRender() {
return !!this.opacity;
}
draw(ctx) {
const options = this.options.setContext(this.getContext());
let opacity = this.opacity;
if (!opacity) {
return;
}
this._updateAnimationTarget(options);
const tooltipSize = {
width: this.width,
height: this.height
};
const pt = {
x: this.x,
y: this.y
};
opacity = Math.abs(opacity) < 1e-3 ? 0 : opacity;
const padding = toPadding(options.padding);
const hasTooltipContent = this.title.length || this.beforeBody.length || this.body.length || this.afterBody.length || this.footer.length;
if (options.enabled && hasTooltipContent) {
ctx.save();
ctx.globalAlpha = opacity;
this.drawBackground(pt, ctx, tooltipSize, options);
overrideTextDirection(ctx, options.textDirection);
pt.y += padding.top;
this.drawTitle(pt, ctx, options);
this.drawBody(pt, ctx, options);
this.drawFooter(pt, ctx, options);
restoreTextDirection(ctx, options.textDirection);
ctx.restore();
}
}
getActiveElements() {
return this._active || [];
}
setActiveElements(activeElements, eventPosition) {
const lastActive = this._active;
const active = activeElements.map(({ datasetIndex , index })=>{
const meta = this.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 = this._positionChanged(active, eventPosition);
if (changed || positionChanged) {
this._active = active;
this._eventPosition = eventPosition;
this._ignoreReplayEvents = true;
this.update(true);
}
}
handleEvent(e, replay, inChartArea = true) {
if (replay && this._ignoreReplayEvents) {
return false;
}
this._ignoreReplayEvents = false;
const options = this.options;
const lastActive = this._active || [];
const active = this._getActiveElements(e, lastActive, replay, inChartArea);
const positionChanged = this._positionChanged(active, e);
const changed = replay || !_elementsEqual(active, lastActive) || positionChanged;
if (changed) {
this._active = active;
if (options.enabled || options.external) {
this._eventPosition = {
x: e.x,
y: e.y
};
this.update(true, replay);
}
}
return changed;
}
_getActiveElements(e, lastActive, replay, inChartArea) {
const options = this.options;
if (e.type === 'mouseout') {
return [];
}
if (!inChartArea) {
return lastActive.filter((i)=>this.chart.data.datasets[i.datasetIndex] && this.chart.getDatasetMeta(i.datasetIndex).controller.getParsed(i.index) !== undefined);
}
const active = this.chart.getElementsAtEventForMode(e, options.mode, options, replay);
if (options.reverse) {
active.reverse();
}
return active;
}
_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);
}
}
var plugin_tooltip = {
id: 'tooltip',
_element: Tooltip,
positioners,
afterInit (chart, _args, options) {
if (options) {
chart.tooltip = new Tooltip({
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;
if (tooltip && tooltip._willRender()) {
const args = {
tooltip
};
if (chart.notifyPlugins('beforeTooltipDraw', {
...args,
cancelable: true
}) === false) {
return;
}
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.inChartArea)) {
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,
boxPadding: 0,
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: defaultCallbacks
},
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'
]
};
// eslint-disable-next-line @typescript-eslint/ban-ts-comment
// Register built-ins
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;
// Compatibility with ESM extensions
Object.assign(Chart, controllers, scales, elements, plugins, platforms);
Chart.Chart = Chart;
if (typeof window !== 'undefined') {
window.Chart = Chart;
}
return Chart;
}));