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/*! |
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* Chart.js v3.2.0 |
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* https://www.chartjs.org |
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* (c) 2021 Chart.js Contributors |
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* Released under the MIT License |
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*/ |
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import { r as requestAnimFrame, a as resolve, e as effects, c as color, i as isObject, b as isArray, d as defaults, v as valueOrDefault, u as unlistenArrayEvents, l as listenArrayEvents, f as resolveObjectKey, g as isNumberFinite, h as defined, s as sign, j as isNullOrUndef, k as clipArea, m as unclipArea, _ as _arrayUnique, t as toRadians, n as toPercentage, o as toDimension, T as TAU, p as formatNumber, q as _angleBetween, H as HALF_PI, P as PI, w as isNumber, x as _limitValue, y as _lookupByKey, z as getRelativePosition$1, A as _isPointInArea, B as _rlookupByKey, C as toPadding, D as each, E as getMaximumSize, F as _getParentNode, G as readUsedSize, I as throttled, J as supportsEventListenerOptions, K as log10, L as _factorize, M as finiteOrDefault, N as callback, O as _addGrace, Q as toDegrees, R as _measureText, S as _int16Range, U as _alignPixel, V as renderText, W as toFont, X as _toLeftRightCenter, Y as _alignStartEnd, Z as overrides, $ as merge, a0 as _capitalize, a1 as descriptors, a2 as isFunction, a3 as _attachContext, a4 as _createResolver, a5 as _descriptors, a6 as mergeIf, a7 as uid, a8 as debounce, a9 as retinaScale, aa as clearCanvas, ab as setsEqual, ac as _elementsEqual, ad as getAngleFromPoint, ae as _readValueToProps, af as _updateBezierControlPoints, ag as _computeSegments, ah as _boundSegments, ai as _steppedInterpolation, aj as _bezierInterpolation, ak as _pointInLine, al as _steppedLineTo, am as _bezierCurveTo, an as drawPoint, ao as addRoundedRectPath, ap as toTRBL, aq as toTRBLCorners, ar as _boundSegment, as as _normalizeAngle, at as getRtlAdapter, au as overrideTextDirection, av as _textX, aw as restoreTextDirection, ax as noop, ay as distanceBetweenPoints, az as _setMinAndMaxByKey, aA as niceNum, aB as almostWhole, aC as almostEquals, aD as _decimalPlaces, aE as _longestText, aF as _filterBetween, aG as _lookup } from './chunks/helpers.segment.js'; |
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export { d as defaults } from './chunks/helpers.segment.js'; |
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|
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class Animator { |
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constructor() { |
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this._request = null; |
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this._charts = new Map(); |
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this._running = false; |
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this._lastDate = undefined; |
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} |
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_notify(chart, anims, date, type) { |
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const callbacks = anims.listeners[type]; |
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const numSteps = anims.duration; |
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callbacks.forEach(fn => fn({ |
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chart, |
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initial: anims.initial, |
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numSteps, |
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currentStep: Math.min(date - anims.start, numSteps) |
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})); |
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} |
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_refresh() { |
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const me = this; |
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if (me._request) { |
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return; |
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} |
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me._running = true; |
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me._request = requestAnimFrame.call(window, () => { |
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me._update(); |
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me._request = null; |
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if (me._running) { |
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me._refresh(); |
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} |
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}); |
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} |
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_update(date = Date.now()) { |
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const me = this; |
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let remaining = 0; |
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me._charts.forEach((anims, chart) => { |
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if (!anims.running || !anims.items.length) { |
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return; |
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} |
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const items = anims.items; |
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let i = items.length - 1; |
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let draw = false; |
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let item; |
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for (; i >= 0; --i) { |
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item = items[i]; |
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if (item._active) { |
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if (item._total > anims.duration) { |
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anims.duration = item._total; |
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} |
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item.tick(date); |
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draw = true; |
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} else { |
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items[i] = items[items.length - 1]; |
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items.pop(); |
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} |
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} |
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if (draw) { |
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chart.draw(); |
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me._notify(chart, anims, date, 'progress'); |
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} |
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if (!items.length) { |
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anims.running = false; |
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me._notify(chart, anims, date, 'complete'); |
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anims.initial = false; |
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} |
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remaining += items.length; |
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}); |
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me._lastDate = date; |
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if (remaining === 0) { |
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me._running = false; |
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} |
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} |
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_getAnims(chart) { |
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const charts = this._charts; |
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let anims = charts.get(chart); |
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if (!anims) { |
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anims = { |
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running: false, |
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initial: true, |
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items: [], |
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listeners: { |
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complete: [], |
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progress: [] |
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} |
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}; |
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charts.set(chart, anims); |
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} |
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return anims; |
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} |
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listen(chart, event, cb) { |
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this._getAnims(chart).listeners[event].push(cb); |
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} |
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add(chart, items) { |
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if (!items || !items.length) { |
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return; |
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} |
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this._getAnims(chart).items.push(...items); |
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} |
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has(chart) { |
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return this._getAnims(chart).items.length > 0; |
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} |
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start(chart) { |
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const anims = this._charts.get(chart); |
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if (!anims) { |
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return; |
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} |
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anims.running = true; |
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anims.start = Date.now(); |
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anims.duration = anims.items.reduce((acc, cur) => Math.max(acc, cur._duration), 0); |
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this._refresh(); |
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} |
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running(chart) { |
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if (!this._running) { |
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return false; |
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} |
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const anims = this._charts.get(chart); |
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if (!anims || !anims.running || !anims.items.length) { |
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return false; |
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} |
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return true; |
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} |
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stop(chart) { |
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const anims = this._charts.get(chart); |
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if (!anims || !anims.items.length) { |
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return; |
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} |
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const items = anims.items; |
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let i = items.length - 1; |
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for (; i >= 0; --i) { |
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items[i].cancel(); |
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} |
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anims.items = []; |
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this._notify(chart, anims, Date.now(), 'complete'); |
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} |
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remove(chart) { |
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return this._charts.delete(chart); |
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} |
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} |
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var animator = new Animator(); |
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|
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const transparent = 'transparent'; |
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const interpolators = { |
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boolean(from, to, factor) { |
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return factor > 0.5 ? to : from; |
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}, |
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color(from, to, factor) { |
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const c0 = color(from || transparent); |
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const c1 = c0.valid && color(to || transparent); |
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return c1 && c1.valid |
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? c1.mix(c0, factor).hexString() |
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: to; |
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}, |
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number(from, to, factor) { |
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return from + (to - from) * factor; |
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} |
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}; |
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class Animation { |
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constructor(cfg, target, prop, to) { |
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const currentValue = target[prop]; |
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to = resolve([cfg.to, to, currentValue, cfg.from]); |
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const from = resolve([cfg.from, currentValue, to]); |
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this._active = true; |
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this._fn = cfg.fn || interpolators[cfg.type || typeof from]; |
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this._easing = effects[cfg.easing] || effects.linear; |
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this._start = Math.floor(Date.now() + (cfg.delay || 0)); |
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this._duration = this._total = Math.floor(cfg.duration); |
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this._loop = !!cfg.loop; |
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this._target = target; |
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this._prop = prop; |
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this._from = from; |
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this._to = to; |
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this._promises = undefined; |
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} |
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active() { |
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return this._active; |
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} |
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update(cfg, to, date) { |
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const me = this; |
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if (me._active) { |
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me._notify(false); |
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const currentValue = me._target[me._prop]; |
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const elapsed = date - me._start; |
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const remain = me._duration - elapsed; |
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me._start = date; |
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me._duration = Math.floor(Math.max(remain, cfg.duration)); |
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me._total += elapsed; |
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me._loop = !!cfg.loop; |
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me._to = resolve([cfg.to, to, currentValue, cfg.from]); |
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me._from = resolve([cfg.from, currentValue, to]); |
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} |
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} |
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cancel() { |
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const me = this; |
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if (me._active) { |
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me.tick(Date.now()); |
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me._active = false; |
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me._notify(false); |
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} |
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} |
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tick(date) { |
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const me = this; |
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const elapsed = date - me._start; |
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const duration = me._duration; |
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const prop = me._prop; |
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const from = me._from; |
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const loop = me._loop; |
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const to = me._to; |
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let factor; |
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me._active = from !== to && (loop || (elapsed < duration)); |
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if (!me._active) { |
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me._target[prop] = to; |
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me._notify(true); |
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return; |
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} |
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if (elapsed < 0) { |
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me._target[prop] = from; |
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return; |
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} |
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factor = (elapsed / duration) % 2; |
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factor = loop && factor > 1 ? 2 - factor : factor; |
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factor = me._easing(Math.min(1, Math.max(0, factor))); |
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me._target[prop] = me._fn(from, to, factor); |
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} |
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wait() { |
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const promises = this._promises || (this._promises = []); |
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return new Promise((res, rej) => { |
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promises.push({res, rej}); |
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}); |
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} |
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_notify(resolved) { |
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const method = resolved ? 'res' : 'rej'; |
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const promises = this._promises || []; |
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for (let i = 0; i < promises.length; i++) { |
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promises[i][method](); |
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} |
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} |
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} |
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|
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const numbers = ['x', 'y', 'borderWidth', 'radius', 'tension']; |
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const colors = ['color', 'borderColor', 'backgroundColor']; |
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defaults.set('animation', { |
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delay: undefined, |
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duration: 1000, |
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easing: 'easeOutQuart', |
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fn: undefined, |
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from: undefined, |
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loop: undefined, |
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to: undefined, |
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type: undefined, |
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}); |
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const animationOptions = Object.keys(defaults.animation); |
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defaults.describe('animation', { |
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_fallback: false, |
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_indexable: false, |
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_scriptable: (name) => name !== 'onProgress' && name !== 'onComplete' && name !== 'fn', |
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}); |
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defaults.set('animations', { |
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colors: { |
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type: 'color', |
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properties: colors |
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}, |
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numbers: { |
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type: 'number', |
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properties: numbers |
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}, |
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}); |
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defaults.describe('animations', { |
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_fallback: 'animation', |
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}); |
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defaults.set('transitions', { |
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active: { |
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animation: { |
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duration: 400 |
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} |
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}, |
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resize: { |
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animation: { |
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duration: 0 |
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} |
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}, |
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show: { |
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animations: { |
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colors: { |
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from: 'transparent' |
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}, |
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visible: { |
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type: 'boolean', |
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duration: 0 |
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}, |
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} |
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}, |
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hide: { |
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animations: { |
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colors: { |
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to: 'transparent' |
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}, |
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visible: { |
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type: 'boolean', |
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easing: 'linear', |
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fn: v => v | 0 |
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}, |
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} |
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} |
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}); |
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class Animations { |
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constructor(chart, config) { |
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this._chart = chart; |
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this._properties = new Map(); |
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this.configure(config); |
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} |
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configure(config) { |
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if (!isObject(config)) { |
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return; |
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} |
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const animatedProps = this._properties; |
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Object.getOwnPropertyNames(config).forEach(key => { |
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const cfg = config[key]; |
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if (!isObject(cfg)) { |
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return; |
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} |
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const resolved = {}; |
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for (const option of animationOptions) { |
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resolved[option] = cfg[option]; |
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} |
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(isArray(cfg.properties) && cfg.properties || [key]).forEach((prop) => { |
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if (prop === key || !animatedProps.has(prop)) { |
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animatedProps.set(prop, resolved); |
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} |
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}); |
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}); |
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} |
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_animateOptions(target, values) { |
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const newOptions = values.options; |
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const options = resolveTargetOptions(target, newOptions); |
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if (!options) { |
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return []; |
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} |
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const animations = this._createAnimations(options, newOptions); |
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if (newOptions.$shared) { |
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awaitAll(target.options.$animations, newOptions).then(() => { |
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target.options = newOptions; |
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}, () => { |
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}); |
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} |
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return animations; |
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} |
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_createAnimations(target, values) { |
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const animatedProps = this._properties; |
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const animations = []; |
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const running = target.$animations || (target.$animations = {}); |
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const props = Object.keys(values); |
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const date = Date.now(); |
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let i; |
| 362 |
for (i = props.length - 1; i >= 0; --i) { |
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const prop = props[i]; |
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if (prop.charAt(0) === '$') { |
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continue; |
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} |
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if (prop === 'options') { |
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animations.push(...this._animateOptions(target, values)); |
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continue; |
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} |
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const value = values[prop]; |
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let animation = running[prop]; |
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const cfg = animatedProps.get(prop); |
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if (animation) { |
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if (cfg && animation.active()) { |
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animation.update(cfg, value, date); |
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continue; |
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} else { |
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animation.cancel(); |
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} |
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} |
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if (!cfg || !cfg.duration) { |
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target[prop] = value; |
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continue; |
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} |
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running[prop] = animation = new Animation(cfg, target, prop, value); |
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animations.push(animation); |
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} |
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return animations; |
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} |
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update(target, values) { |
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if (this._properties.size === 0) { |
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Object.assign(target, values); |
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return; |
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} |
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const animations = this._createAnimations(target, values); |
| 397 |
if (animations.length) { |
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animator.add(this._chart, animations); |
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return true; |
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} |
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} |
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} |
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function awaitAll(animations, properties) { |
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const running = []; |
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const keys = Object.keys(properties); |
| 406 |
for (let i = 0; i < keys.length; i++) { |
| 407 |
const anim = animations[keys[i]]; |
| 408 |
if (anim && anim.active()) { |
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running.push(anim.wait()); |
| 410 |
} |
| 411 |
} |
| 412 |
return Promise.all(running); |
| 413 |
} |
| 414 |
function resolveTargetOptions(target, newOptions) { |
| 415 |
if (!newOptions) { |
| 416 |
return; |
| 417 |
} |
| 418 |
let options = target.options; |
| 419 |
if (!options) { |
| 420 |
target.options = newOptions; |
| 421 |
return; |
| 422 |
} |
| 423 |
if (options.$shared) { |
| 424 |
target.options = options = Object.assign({}, options, {$shared: false, $animations: {}}); |
| 425 |
} |
| 426 |
return options; |
| 427 |
} |
| 428 |
|
| 429 |
function scaleClip(scale, allowedOverflow) { |
| 430 |
const opts = scale && scale.options || {}; |
| 431 |
const reverse = opts.reverse; |
| 432 |
const min = opts.min === undefined ? allowedOverflow : 0; |
| 433 |
const max = opts.max === undefined ? allowedOverflow : 0; |
| 434 |
return { |
| 435 |
start: reverse ? max : min, |
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end: reverse ? min : max |
| 437 |
}; |
| 438 |
} |
| 439 |
function defaultClip(xScale, yScale, allowedOverflow) { |
| 440 |
if (allowedOverflow === false) { |
| 441 |
return false; |
| 442 |
} |
| 443 |
const x = scaleClip(xScale, allowedOverflow); |
| 444 |
const y = scaleClip(yScale, allowedOverflow); |
| 445 |
return { |
| 446 |
top: y.end, |
| 447 |
right: x.end, |
| 448 |
bottom: y.start, |
| 449 |
left: x.start |
| 450 |
}; |
| 451 |
} |
| 452 |
function toClip(value) { |
| 453 |
let t, r, b, l; |
| 454 |
if (isObject(value)) { |
| 455 |
t = value.top; |
| 456 |
r = value.right; |
| 457 |
b = value.bottom; |
| 458 |
l = value.left; |
| 459 |
} else { |
| 460 |
t = r = b = l = value; |
| 461 |
} |
| 462 |
return { |
| 463 |
top: t, |
| 464 |
right: r, |
| 465 |
bottom: b, |
| 466 |
left: l |
| 467 |
}; |
| 468 |
} |
| 469 |
function getSortedDatasetIndices(chart, filterVisible) { |
| 470 |
const keys = []; |
| 471 |
const metasets = chart._getSortedDatasetMetas(filterVisible); |
| 472 |
let i, ilen; |
| 473 |
for (i = 0, ilen = metasets.length; i < ilen; ++i) { |
| 474 |
keys.push(metasets[i].index); |
| 475 |
} |
| 476 |
return keys; |
| 477 |
} |
| 478 |
function applyStack(stack, value, dsIndex, options) { |
| 479 |
const keys = stack.keys; |
| 480 |
const singleMode = options.mode === 'single'; |
| 481 |
let i, ilen, datasetIndex, otherValue; |
| 482 |
if (value === null) { |
| 483 |
return; |
| 484 |
} |
| 485 |
for (i = 0, ilen = keys.length; i < ilen; ++i) { |
| 486 |
datasetIndex = +keys[i]; |
| 487 |
if (datasetIndex === dsIndex) { |
| 488 |
if (options.all) { |
| 489 |
continue; |
| 490 |
} |
| 491 |
break; |
| 492 |
} |
| 493 |
otherValue = stack.values[datasetIndex]; |
| 494 |
if (isNumberFinite(otherValue) && (singleMode || (value === 0 || sign(value) === sign(otherValue)))) { |
| 495 |
value += otherValue; |
| 496 |
} |
| 497 |
} |
| 498 |
return value; |
| 499 |
} |
| 500 |
function convertObjectDataToArray(data) { |
| 501 |
const keys = Object.keys(data); |
| 502 |
const adata = new Array(keys.length); |
| 503 |
let i, ilen, key; |
| 504 |
for (i = 0, ilen = keys.length; i < ilen; ++i) { |
| 505 |
key = keys[i]; |
| 506 |
adata[i] = { |
| 507 |
x: key, |
| 508 |
y: data[key] |
| 509 |
}; |
| 510 |
} |
| 511 |
return adata; |
| 512 |
} |
| 513 |
function isStacked(scale, meta) { |
| 514 |
const stacked = scale && scale.options.stacked; |
| 515 |
return stacked || (stacked === undefined && meta.stack !== undefined); |
| 516 |
} |
| 517 |
function getStackKey(indexScale, valueScale, meta) { |
| 518 |
return `${indexScale.id}.${valueScale.id}.${meta.stack || meta.type}`; |
| 519 |
} |
| 520 |
function getUserBounds(scale) { |
| 521 |
const {min, max, minDefined, maxDefined} = scale.getUserBounds(); |
| 522 |
return { |
| 523 |
min: minDefined ? min : Number.NEGATIVE_INFINITY, |
| 524 |
max: maxDefined ? max : Number.POSITIVE_INFINITY |
| 525 |
}; |
| 526 |
} |
| 527 |
function getOrCreateStack(stacks, stackKey, indexValue) { |
| 528 |
const subStack = stacks[stackKey] || (stacks[stackKey] = {}); |
| 529 |
return subStack[indexValue] || (subStack[indexValue] = {}); |
| 530 |
} |
| 531 |
function getLastIndexInStack(stack, vScale, positive) { |
| 532 |
for (const meta of vScale.getMatchingVisibleMetas('bar').reverse()) { |
| 533 |
const value = stack[meta.index]; |
| 534 |
if ((positive && value > 0) || (!positive && value < 0)) { |
| 535 |
return meta.index; |
| 536 |
} |
| 537 |
} |
| 538 |
return null; |
| 539 |
} |
| 540 |
function updateStacks(controller, parsed) { |
| 541 |
const {chart, _cachedMeta: meta} = controller; |
| 542 |
const stacks = chart._stacks || (chart._stacks = {}); |
| 543 |
const {iScale, vScale, index: datasetIndex} = meta; |
| 544 |
const iAxis = iScale.axis; |
| 545 |
const vAxis = vScale.axis; |
| 546 |
const key = getStackKey(iScale, vScale, meta); |
| 547 |
const ilen = parsed.length; |
| 548 |
let stack; |
| 549 |
for (let i = 0; i < ilen; ++i) { |
| 550 |
const item = parsed[i]; |
| 551 |
const {[iAxis]: index, [vAxis]: value} = item; |
| 552 |
const itemStacks = item._stacks || (item._stacks = {}); |
| 553 |
stack = itemStacks[vAxis] = getOrCreateStack(stacks, key, index); |
| 554 |
stack[datasetIndex] = value; |
| 555 |
stack._top = getLastIndexInStack(stack, vScale, true); |
| 556 |
stack._bottom = getLastIndexInStack(stack, vScale, false); |
| 557 |
} |
| 558 |
} |
| 559 |
function getFirstScaleId(chart, axis) { |
| 560 |
const scales = chart.scales; |
| 561 |
return Object.keys(scales).filter(key => scales[key].axis === axis).shift(); |
| 562 |
} |
| 563 |
function createDatasetContext(parent, index) { |
| 564 |
return Object.assign(Object.create(parent), |
| 565 |
{ |
| 566 |
active: false, |
| 567 |
dataset: undefined, |
| 568 |
datasetIndex: index, |
| 569 |
index, |
| 570 |
mode: 'default', |
| 571 |
type: 'dataset' |
| 572 |
} |
| 573 |
); |
| 574 |
} |
| 575 |
function createDataContext(parent, index, element) { |
| 576 |
return Object.assign(Object.create(parent), { |
| 577 |
active: false, |
| 578 |
dataIndex: index, |
| 579 |
parsed: undefined, |
| 580 |
raw: undefined, |
| 581 |
element, |
| 582 |
index, |
| 583 |
mode: 'default', |
| 584 |
type: 'data' |
| 585 |
}); |
| 586 |
} |
| 587 |
function clearStacks(meta, items) { |
| 588 |
items = items || meta._parsed; |
| 589 |
for (const parsed of items) { |
| 590 |
const stacks = parsed._stacks; |
| 591 |
if (!stacks || stacks[meta.vScale.id] === undefined || stacks[meta.vScale.id][meta.index] === undefined) { |
| 592 |
return; |
| 593 |
} |
| 594 |
delete stacks[meta.vScale.id][meta.index]; |
| 595 |
} |
| 596 |
} |
| 597 |
const isDirectUpdateMode = (mode) => mode === 'reset' || mode === 'none'; |
| 598 |
const cloneIfNotShared = (cached, shared) => shared ? cached : Object.assign({}, cached); |
| 599 |
class DatasetController { |
| 600 |
constructor(chart, datasetIndex) { |
| 601 |
this.chart = chart; |
| 602 |
this._ctx = chart.ctx; |
| 603 |
this.index = datasetIndex; |
| 604 |
this._cachedDataOpts = {}; |
| 605 |
this._cachedMeta = this.getMeta(); |
| 606 |
this._type = this._cachedMeta.type; |
| 607 |
this.options = undefined; |
| 608 |
this._parsing = false; |
| 609 |
this._data = undefined; |
| 610 |
this._objectData = undefined; |
| 611 |
this._sharedOptions = undefined; |
| 612 |
this._drawStart = undefined; |
| 613 |
this._drawCount = undefined; |
| 614 |
this.enableOptionSharing = false; |
| 615 |
this.$context = undefined; |
| 616 |
this.initialize(); |
| 617 |
} |
| 618 |
initialize() { |
| 619 |
const me = this; |
| 620 |
const meta = me._cachedMeta; |
| 621 |
me.configure(); |
| 622 |
me.linkScales(); |
| 623 |
meta._stacked = isStacked(meta.vScale, meta); |
| 624 |
me.addElements(); |
| 625 |
} |
| 626 |
updateIndex(datasetIndex) { |
| 627 |
this.index = datasetIndex; |
| 628 |
} |
| 629 |
linkScales() { |
| 630 |
const me = this; |
| 631 |
const chart = me.chart; |
| 632 |
const meta = me._cachedMeta; |
| 633 |
const dataset = me.getDataset(); |
| 634 |
const chooseId = (axis, x, y, r) => axis === 'x' ? x : axis === 'r' ? r : y; |
| 635 |
const xid = meta.xAxisID = valueOrDefault(dataset.xAxisID, getFirstScaleId(chart, 'x')); |
| 636 |
const yid = meta.yAxisID = valueOrDefault(dataset.yAxisID, getFirstScaleId(chart, 'y')); |
| 637 |
const rid = meta.rAxisID = valueOrDefault(dataset.rAxisID, getFirstScaleId(chart, 'r')); |
| 638 |
const indexAxis = meta.indexAxis; |
| 639 |
const iid = meta.iAxisID = chooseId(indexAxis, xid, yid, rid); |
| 640 |
const vid = meta.vAxisID = chooseId(indexAxis, yid, xid, rid); |
| 641 |
meta.xScale = me.getScaleForId(xid); |
| 642 |
meta.yScale = me.getScaleForId(yid); |
| 643 |
meta.rScale = me.getScaleForId(rid); |
| 644 |
meta.iScale = me.getScaleForId(iid); |
| 645 |
meta.vScale = me.getScaleForId(vid); |
| 646 |
} |
| 647 |
getDataset() { |
| 648 |
return this.chart.data.datasets[this.index]; |
| 649 |
} |
| 650 |
getMeta() { |
| 651 |
return this.chart.getDatasetMeta(this.index); |
| 652 |
} |
| 653 |
getScaleForId(scaleID) { |
| 654 |
return this.chart.scales[scaleID]; |
| 655 |
} |
| 656 |
_getOtherScale(scale) { |
| 657 |
const meta = this._cachedMeta; |
| 658 |
return scale === meta.iScale |
| 659 |
? meta.vScale |
| 660 |
: meta.iScale; |
| 661 |
} |
| 662 |
reset() { |
| 663 |
this._update('reset'); |
| 664 |
} |
| 665 |
_destroy() { |
| 666 |
const meta = this._cachedMeta; |
| 667 |
if (this._data) { |
| 668 |
unlistenArrayEvents(this._data, this); |
| 669 |
} |
| 670 |
if (meta._stacked) { |
| 671 |
clearStacks(meta); |
| 672 |
} |
| 673 |
} |
| 674 |
_dataCheck() { |
| 675 |
const me = this; |
| 676 |
const dataset = me.getDataset(); |
| 677 |
const data = dataset.data || (dataset.data = []); |
| 678 |
if (isObject(data)) { |
| 679 |
me._data = convertObjectDataToArray(data); |
| 680 |
} else if (me._data !== data) { |
| 681 |
if (me._data) { |
| 682 |
unlistenArrayEvents(me._data, me); |
| 683 |
clearStacks(me._cachedMeta); |
| 684 |
} |
| 685 |
if (data && Object.isExtensible(data)) { |
| 686 |
listenArrayEvents(data, me); |
| 687 |
} |
| 688 |
me._data = data; |
| 689 |
} |
| 690 |
} |
| 691 |
addElements() { |
| 692 |
const me = this; |
| 693 |
const meta = me._cachedMeta; |
| 694 |
me._dataCheck(); |
| 695 |
if (me.datasetElementType) { |
| 696 |
meta.dataset = new me.datasetElementType(); |
| 697 |
} |
| 698 |
} |
| 699 |
buildOrUpdateElements(resetNewElements) { |
| 700 |
const me = this; |
| 701 |
const meta = me._cachedMeta; |
| 702 |
const dataset = me.getDataset(); |
| 703 |
let stackChanged = false; |
| 704 |
me._dataCheck(); |
| 705 |
meta._stacked = isStacked(meta.vScale, meta); |
| 706 |
if (meta.stack !== dataset.stack) { |
| 707 |
stackChanged = true; |
| 708 |
clearStacks(meta); |
| 709 |
meta.stack = dataset.stack; |
| 710 |
} |
| 711 |
me._resyncElements(resetNewElements); |
| 712 |
if (stackChanged) { |
| 713 |
updateStacks(me, meta._parsed); |
| 714 |
} |
| 715 |
} |
| 716 |
configure() { |
| 717 |
const me = this; |
| 718 |
const config = me.chart.config; |
| 719 |
const scopeKeys = config.datasetScopeKeys(me._type); |
| 720 |
const scopes = config.getOptionScopes(me.getDataset(), scopeKeys, true); |
| 721 |
me.options = config.createResolver(scopes, me.getContext()); |
| 722 |
me._parsing = me.options.parsing; |
| 723 |
} |
| 724 |
parse(start, count) { |
| 725 |
const me = this; |
| 726 |
const {_cachedMeta: meta, _data: data} = me; |
| 727 |
const {iScale, _stacked} = meta; |
| 728 |
const iAxis = iScale.axis; |
| 729 |
let sorted = start === 0 && count === data.length ? true : meta._sorted; |
| 730 |
let prev = start > 0 && meta._parsed[start - 1]; |
| 731 |
let i, cur, parsed; |
| 732 |
if (me._parsing === false) { |
| 733 |
meta._parsed = data; |
| 734 |
meta._sorted = true; |
| 735 |
parsed = data; |
| 736 |
} else { |
| 737 |
if (isArray(data[start])) { |
| 738 |
parsed = me.parseArrayData(meta, data, start, count); |
| 739 |
} else if (isObject(data[start])) { |
| 740 |
parsed = me.parseObjectData(meta, data, start, count); |
| 741 |
} else { |
| 742 |
parsed = me.parsePrimitiveData(meta, data, start, count); |
| 743 |
} |
| 744 |
const isNotInOrderComparedToPrev = () => cur[iAxis] === null || (prev && cur[iAxis] < prev[iAxis]); |
| 745 |
for (i = 0; i < count; ++i) { |
| 746 |
meta._parsed[i + start] = cur = parsed[i]; |
| 747 |
if (sorted) { |
| 748 |
if (isNotInOrderComparedToPrev()) { |
| 749 |
sorted = false; |
| 750 |
} |
| 751 |
prev = cur; |
| 752 |
} |
| 753 |
} |
| 754 |
meta._sorted = sorted; |
| 755 |
} |
| 756 |
if (_stacked) { |
| 757 |
updateStacks(me, parsed); |
| 758 |
} |
| 759 |
} |
| 760 |
parsePrimitiveData(meta, data, start, count) { |
| 761 |
const {iScale, vScale} = meta; |
| 762 |
const iAxis = iScale.axis; |
| 763 |
const vAxis = vScale.axis; |
| 764 |
const labels = iScale.getLabels(); |
| 765 |
const singleScale = iScale === vScale; |
| 766 |
const parsed = new Array(count); |
| 767 |
let i, ilen, index; |
| 768 |
for (i = 0, ilen = count; i < ilen; ++i) { |
| 769 |
index = i + start; |
| 770 |
parsed[i] = { |
| 771 |
[iAxis]: singleScale || iScale.parse(labels[index], index), |
| 772 |
[vAxis]: vScale.parse(data[index], index) |
| 773 |
}; |
| 774 |
} |
| 775 |
return parsed; |
| 776 |
} |
| 777 |
parseArrayData(meta, data, start, count) { |
| 778 |
const {xScale, yScale} = meta; |
| 779 |
const parsed = new Array(count); |
| 780 |
let i, ilen, index, item; |
| 781 |
for (i = 0, ilen = count; i < ilen; ++i) { |
| 782 |
index = i + start; |
| 783 |
item = data[index]; |
| 784 |
parsed[i] = { |
| 785 |
x: xScale.parse(item[0], index), |
| 786 |
y: yScale.parse(item[1], index) |
| 787 |
}; |
| 788 |
} |
| 789 |
return parsed; |
| 790 |
} |
| 791 |
parseObjectData(meta, data, start, count) { |
| 792 |
const {xScale, yScale} = meta; |
| 793 |
const {xAxisKey = 'x', yAxisKey = 'y'} = this._parsing; |
| 794 |
const parsed = new Array(count); |
| 795 |
let i, ilen, index, item; |
| 796 |
for (i = 0, ilen = count; i < ilen; ++i) { |
| 797 |
index = i + start; |
| 798 |
item = data[index]; |
| 799 |
parsed[i] = { |
| 800 |
x: xScale.parse(resolveObjectKey(item, xAxisKey), index), |
| 801 |
y: yScale.parse(resolveObjectKey(item, yAxisKey), index) |
| 802 |
}; |
| 803 |
} |
| 804 |
return parsed; |
| 805 |
} |
| 806 |
getParsed(index) { |
| 807 |
return this._cachedMeta._parsed[index]; |
| 808 |
} |
| 809 |
getDataElement(index) { |
| 810 |
return this._cachedMeta.data[index]; |
| 811 |
} |
| 812 |
applyStack(scale, parsed, mode) { |
| 813 |
const chart = this.chart; |
| 814 |
const meta = this._cachedMeta; |
| 815 |
const value = parsed[scale.axis]; |
| 816 |
const stack = { |
| 817 |
keys: getSortedDatasetIndices(chart, true), |
| 818 |
values: parsed._stacks[scale.axis] |
| 819 |
}; |
| 820 |
return applyStack(stack, value, meta.index, {mode}); |
| 821 |
} |
| 822 |
updateRangeFromParsed(range, scale, parsed, stack) { |
| 823 |
const parsedValue = parsed[scale.axis]; |
| 824 |
let value = parsedValue === null ? NaN : parsedValue; |
| 825 |
const values = stack && parsed._stacks[scale.axis]; |
| 826 |
if (stack && values) { |
| 827 |
stack.values = values; |
| 828 |
range.min = Math.min(range.min, value); |
| 829 |
range.max = Math.max(range.max, value); |
| 830 |
value = applyStack(stack, parsedValue, this._cachedMeta.index, {all: true}); |
| 831 |
} |
| 832 |
range.min = Math.min(range.min, value); |
| 833 |
range.max = Math.max(range.max, value); |
| 834 |
} |
| 835 |
getMinMax(scale, canStack) { |
| 836 |
const me = this; |
| 837 |
const meta = me._cachedMeta; |
| 838 |
const _parsed = meta._parsed; |
| 839 |
const sorted = meta._sorted && scale === meta.iScale; |
| 840 |
const ilen = _parsed.length; |
| 841 |
const otherScale = me._getOtherScale(scale); |
| 842 |
const stack = canStack && meta._stacked && {keys: getSortedDatasetIndices(me.chart, true), values: null}; |
| 843 |
const range = {min: Number.POSITIVE_INFINITY, max: Number.NEGATIVE_INFINITY}; |
| 844 |
const {min: otherMin, max: otherMax} = getUserBounds(otherScale); |
| 845 |
let i, value, parsed, otherValue; |
| 846 |
function _skip() { |
| 847 |
parsed = _parsed[i]; |
| 848 |
value = parsed[scale.axis]; |
| 849 |
otherValue = parsed[otherScale.axis]; |
| 850 |
return !isNumberFinite(value) || otherMin > otherValue || otherMax < otherValue; |
| 851 |
} |
| 852 |
for (i = 0; i < ilen; ++i) { |
| 853 |
if (_skip()) { |
| 854 |
continue; |
| 855 |
} |
| 856 |
me.updateRangeFromParsed(range, scale, parsed, stack); |
| 857 |
if (sorted) { |
| 858 |
break; |
| 859 |
} |
| 860 |
} |
| 861 |
if (sorted) { |
| 862 |
for (i = ilen - 1; i >= 0; --i) { |
| 863 |
if (_skip()) { |
| 864 |
continue; |
| 865 |
} |
| 866 |
me.updateRangeFromParsed(range, scale, parsed, stack); |
| 867 |
break; |
| 868 |
} |
| 869 |
} |
| 870 |
return range; |
| 871 |
} |
| 872 |
getAllParsedValues(scale) { |
| 873 |
const parsed = this._cachedMeta._parsed; |
| 874 |
const values = []; |
| 875 |
let i, ilen, value; |
| 876 |
for (i = 0, ilen = parsed.length; i < ilen; ++i) { |
| 877 |
value = parsed[i][scale.axis]; |
| 878 |
if (isNumberFinite(value)) { |
| 879 |
values.push(value); |
| 880 |
} |
| 881 |
} |
| 882 |
return values; |
| 883 |
} |
| 884 |
getMaxOverflow() { |
| 885 |
return false; |
| 886 |
} |
| 887 |
getLabelAndValue(index) { |
| 888 |
const me = this; |
| 889 |
const meta = me._cachedMeta; |
| 890 |
const iScale = meta.iScale; |
| 891 |
const vScale = meta.vScale; |
| 892 |
const parsed = me.getParsed(index); |
| 893 |
return { |
| 894 |
label: iScale ? '' + iScale.getLabelForValue(parsed[iScale.axis]) : '', |
| 895 |
value: vScale ? '' + vScale.getLabelForValue(parsed[vScale.axis]) : '' |
| 896 |
}; |
| 897 |
} |
| 898 |
_update(mode) { |
| 899 |
const me = this; |
| 900 |
const meta = me._cachedMeta; |
| 901 |
me.configure(); |
| 902 |
me._cachedDataOpts = {}; |
| 903 |
me.update(mode || 'default'); |
| 904 |
meta._clip = toClip(valueOrDefault(me.options.clip, defaultClip(meta.xScale, meta.yScale, me.getMaxOverflow()))); |
| 905 |
} |
| 906 |
update(mode) {} |
| 907 |
draw() { |
| 908 |
const me = this; |
| 909 |
const ctx = me._ctx; |
| 910 |
const chart = me.chart; |
| 911 |
const meta = me._cachedMeta; |
| 912 |
const elements = meta.data || []; |
| 913 |
const area = chart.chartArea; |
| 914 |
const active = []; |
| 915 |
const start = me._drawStart || 0; |
| 916 |
const count = me._drawCount || (elements.length - start); |
| 917 |
let i; |
| 918 |
if (meta.dataset) { |
| 919 |
meta.dataset.draw(ctx, area, start, count); |
| 920 |
} |
| 921 |
for (i = start; i < start + count; ++i) { |
| 922 |
const element = elements[i]; |
| 923 |
if (element.active) { |
| 924 |
active.push(element); |
| 925 |
} else { |
| 926 |
element.draw(ctx, area); |
| 927 |
} |
| 928 |
} |
| 929 |
for (i = 0; i < active.length; ++i) { |
| 930 |
active[i].draw(ctx, area); |
| 931 |
} |
| 932 |
} |
| 933 |
getStyle(index, active) { |
| 934 |
const mode = active ? 'active' : 'default'; |
| 935 |
return index === undefined && this._cachedMeta.dataset |
| 936 |
? this.resolveDatasetElementOptions(mode) |
| 937 |
: this.resolveDataElementOptions(index || 0, mode); |
| 938 |
} |
| 939 |
getContext(index, active, mode) { |
| 940 |
const me = this; |
| 941 |
const dataset = me.getDataset(); |
| 942 |
let context; |
| 943 |
if (index >= 0 && index < me._cachedMeta.data.length) { |
| 944 |
const element = me._cachedMeta.data[index]; |
| 945 |
context = element.$context || |
| 946 |
(element.$context = createDataContext(me.getContext(), index, element)); |
| 947 |
context.parsed = me.getParsed(index); |
| 948 |
context.raw = dataset.data[index]; |
| 949 |
} else { |
| 950 |
context = me.$context || |
| 951 |
(me.$context = createDatasetContext(me.chart.getContext(), me.index)); |
| 952 |
context.dataset = dataset; |
| 953 |
} |
| 954 |
context.active = !!active; |
| 955 |
context.mode = mode; |
| 956 |
return context; |
| 957 |
} |
| 958 |
resolveDatasetElementOptions(mode) { |
| 959 |
return this._resolveElementOptions(this.datasetElementType.id, mode); |
| 960 |
} |
| 961 |
resolveDataElementOptions(index, mode) { |
| 962 |
return this._resolveElementOptions(this.dataElementType.id, mode, index); |
| 963 |
} |
| 964 |
_resolveElementOptions(elementType, mode = 'default', index) { |
| 965 |
const me = this; |
| 966 |
const active = mode === 'active'; |
| 967 |
const cache = me._cachedDataOpts; |
| 968 |
const cacheKey = elementType + '-' + mode; |
| 969 |
const cached = cache[cacheKey]; |
| 970 |
const sharing = me.enableOptionSharing && defined(index); |
| 971 |
if (cached) { |
| 972 |
return cloneIfNotShared(cached, sharing); |
| 973 |
} |
| 974 |
const config = me.chart.config; |
| 975 |
const scopeKeys = config.datasetElementScopeKeys(me._type, elementType); |
| 976 |
const prefixes = active ? [`${elementType}Hover`, 'hover', elementType, ''] : [elementType, '']; |
| 977 |
const scopes = config.getOptionScopes(me.getDataset(), scopeKeys); |
| 978 |
const names = Object.keys(defaults.elements[elementType]); |
| 979 |
const context = () => me.getContext(index, active); |
| 980 |
const values = config.resolveNamedOptions(scopes, names, context, prefixes); |
| 981 |
if (values.$shared) { |
| 982 |
values.$shared = sharing; |
| 983 |
cache[cacheKey] = Object.freeze(cloneIfNotShared(values, sharing)); |
| 984 |
} |
| 985 |
return values; |
| 986 |
} |
| 987 |
_resolveAnimations(index, transition, active) { |
| 988 |
const me = this; |
| 989 |
const chart = me.chart; |
| 990 |
const cache = me._cachedDataOpts; |
| 991 |
const cacheKey = `animation-${transition}`; |
| 992 |
const cached = cache[cacheKey]; |
| 993 |
if (cached) { |
| 994 |
return cached; |
| 995 |
} |
| 996 |
let options; |
| 997 |
if (chart.options.animation !== false) { |
| 998 |
const config = me.chart.config; |
| 999 |
const scopeKeys = config.datasetAnimationScopeKeys(me._type, transition); |
| 1000 |
const scopes = config.getOptionScopes(me.getDataset(), scopeKeys); |
| 1001 |
options = config.createResolver(scopes, me.getContext(index, active, transition)); |
| 1002 |
} |
| 1003 |
const animations = new Animations(chart, options && options.animations); |
| 1004 |
if (options && options._cacheable) { |
| 1005 |
cache[cacheKey] = Object.freeze(animations); |
| 1006 |
} |
| 1007 |
return animations; |
| 1008 |
} |
| 1009 |
getSharedOptions(options) { |
| 1010 |
if (!options.$shared) { |
| 1011 |
return; |
| 1012 |
} |
| 1013 |
return this._sharedOptions || (this._sharedOptions = Object.assign({}, options)); |
| 1014 |
} |
| 1015 |
includeOptions(mode, sharedOptions) { |
| 1016 |
return !sharedOptions || isDirectUpdateMode(mode) || this.chart._animationsDisabled; |
| 1017 |
} |
| 1018 |
updateElement(element, index, properties, mode) { |
| 1019 |
if (isDirectUpdateMode(mode)) { |
| 1020 |
Object.assign(element, properties); |
| 1021 |
} else { |
| 1022 |
this._resolveAnimations(index, mode).update(element, properties); |
| 1023 |
} |
| 1024 |
} |
| 1025 |
updateSharedOptions(sharedOptions, mode, newOptions) { |
| 1026 |
if (sharedOptions && !isDirectUpdateMode(mode)) { |
| 1027 |
this._resolveAnimations(undefined, mode).update(sharedOptions, newOptions); |
| 1028 |
} |
| 1029 |
} |
| 1030 |
_setStyle(element, index, mode, active) { |
| 1031 |
element.active = active; |
| 1032 |
const options = this.getStyle(index, active); |
| 1033 |
this._resolveAnimations(index, mode, active).update(element, { |
| 1034 |
options: (!active && this.getSharedOptions(options)) || options |
| 1035 |
}); |
| 1036 |
} |
| 1037 |
removeHoverStyle(element, datasetIndex, index) { |
| 1038 |
this._setStyle(element, index, 'active', false); |
| 1039 |
} |
| 1040 |
setHoverStyle(element, datasetIndex, index) { |
| 1041 |
this._setStyle(element, index, 'active', true); |
| 1042 |
} |
| 1043 |
_removeDatasetHoverStyle() { |
| 1044 |
const element = this._cachedMeta.dataset; |
| 1045 |
if (element) { |
| 1046 |
this._setStyle(element, undefined, 'active', false); |
| 1047 |
} |
| 1048 |
} |
| 1049 |
_setDatasetHoverStyle() { |
| 1050 |
const element = this._cachedMeta.dataset; |
| 1051 |
if (element) { |
| 1052 |
this._setStyle(element, undefined, 'active', true); |
| 1053 |
} |
| 1054 |
} |
| 1055 |
_resyncElements(resetNewElements) { |
| 1056 |
const me = this; |
| 1057 |
const numMeta = me._cachedMeta.data.length; |
| 1058 |
const numData = me._data.length; |
| 1059 |
if (numData > numMeta) { |
| 1060 |
me._insertElements(numMeta, numData - numMeta, resetNewElements); |
| 1061 |
} else if (numData < numMeta) { |
| 1062 |
me._removeElements(numData, numMeta - numData); |
| 1063 |
} |
| 1064 |
const count = Math.min(numData, numMeta); |
| 1065 |
if (count) { |
| 1066 |
me.parse(0, count); |
| 1067 |
} |
| 1068 |
} |
| 1069 |
_insertElements(start, count, resetNewElements = true) { |
| 1070 |
const me = this; |
| 1071 |
const meta = me._cachedMeta; |
| 1072 |
const data = meta.data; |
| 1073 |
const end = start + count; |
| 1074 |
let i; |
| 1075 |
const move = (arr) => { |
| 1076 |
arr.length += count; |
| 1077 |
for (i = arr.length - 1; i >= end; i--) { |
| 1078 |
arr[i] = arr[i - count]; |
| 1079 |
} |
| 1080 |
}; |
| 1081 |
move(data); |
| 1082 |
for (i = start; i < end; ++i) { |
| 1083 |
data[i] = new me.dataElementType(); |
| 1084 |
} |
| 1085 |
if (me._parsing) { |
| 1086 |
move(meta._parsed); |
| 1087 |
} |
| 1088 |
me.parse(start, count); |
| 1089 |
if (resetNewElements) { |
| 1090 |
me.updateElements(data, start, count, 'reset'); |
| 1091 |
} |
| 1092 |
} |
| 1093 |
updateElements(element, start, count, mode) {} |
| 1094 |
_removeElements(start, count) { |
| 1095 |
const me = this; |
| 1096 |
const meta = me._cachedMeta; |
| 1097 |
if (me._parsing) { |
| 1098 |
const removed = meta._parsed.splice(start, count); |
| 1099 |
if (meta._stacked) { |
| 1100 |
clearStacks(meta, removed); |
| 1101 |
} |
| 1102 |
} |
| 1103 |
meta.data.splice(start, count); |
| 1104 |
} |
| 1105 |
_onDataPush() { |
| 1106 |
const count = arguments.length; |
| 1107 |
this._insertElements(this.getDataset().data.length - count, count); |
| 1108 |
} |
| 1109 |
_onDataPop() { |
| 1110 |
this._removeElements(this._cachedMeta.data.length - 1, 1); |
| 1111 |
} |
| 1112 |
_onDataShift() { |
| 1113 |
this._removeElements(0, 1); |
| 1114 |
} |
| 1115 |
_onDataSplice(start, count) { |
| 1116 |
this._removeElements(start, count); |
| 1117 |
this._insertElements(start, arguments.length - 2); |
| 1118 |
} |
| 1119 |
_onDataUnshift() { |
| 1120 |
this._insertElements(0, arguments.length); |
| 1121 |
} |
| 1122 |
} |
| 1123 |
DatasetController.defaults = {}; |
| 1124 |
DatasetController.prototype.datasetElementType = null; |
| 1125 |
DatasetController.prototype.dataElementType = null; |
| 1126 |
|
| 1127 |
function getAllScaleValues(scale) { |
| 1128 |
if (!scale._cache.$bar) { |
| 1129 |
const metas = scale.getMatchingVisibleMetas('bar'); |
| 1130 |
let values = []; |
| 1131 |
for (let i = 0, ilen = metas.length; i < ilen; i++) { |
| 1132 |
values = values.concat(metas[i].controller.getAllParsedValues(scale)); |
| 1133 |
} |
| 1134 |
scale._cache.$bar = _arrayUnique(values.sort((a, b) => a - b)); |
| 1135 |
} |
| 1136 |
return scale._cache.$bar; |
| 1137 |
} |
| 1138 |
function computeMinSampleSize(scale) { |
| 1139 |
const values = getAllScaleValues(scale); |
| 1140 |
let min = scale._length; |
| 1141 |
let i, ilen, curr, prev; |
| 1142 |
const updateMinAndPrev = () => { |
| 1143 |
min = Math.min(min, i && Math.abs(curr - prev) || min); |
| 1144 |
prev = curr; |
| 1145 |
}; |
| 1146 |
for (i = 0, ilen = values.length; i < ilen; ++i) { |
| 1147 |
curr = scale.getPixelForValue(values[i]); |
| 1148 |
updateMinAndPrev(); |
| 1149 |
} |
| 1150 |
for (i = 0, ilen = scale.ticks.length; i < ilen; ++i) { |
| 1151 |
curr = scale.getPixelForTick(i); |
| 1152 |
updateMinAndPrev(); |
| 1153 |
} |
| 1154 |
return min; |
| 1155 |
} |
| 1156 |
function computeFitCategoryTraits(index, ruler, options, stackCount) { |
| 1157 |
const thickness = options.barThickness; |
| 1158 |
let size, ratio; |
| 1159 |
if (isNullOrUndef(thickness)) { |
| 1160 |
size = ruler.min * options.categoryPercentage; |
| 1161 |
ratio = options.barPercentage; |
| 1162 |
} else { |
| 1163 |
size = thickness * stackCount; |
| 1164 |
ratio = 1; |
| 1165 |
} |
| 1166 |
return { |
| 1167 |
chunk: size / stackCount, |
| 1168 |
ratio, |
| 1169 |
start: ruler.pixels[index] - (size / 2) |
| 1170 |
}; |
| 1171 |
} |
| 1172 |
function computeFlexCategoryTraits(index, ruler, options, stackCount) { |
| 1173 |
const pixels = ruler.pixels; |
| 1174 |
const curr = pixels[index]; |
| 1175 |
let prev = index > 0 ? pixels[index - 1] : null; |
| 1176 |
let next = index < pixels.length - 1 ? pixels[index + 1] : null; |
| 1177 |
const percent = options.categoryPercentage; |
| 1178 |
if (prev === null) { |
| 1179 |
prev = curr - (next === null ? ruler.end - ruler.start : next - curr); |
| 1180 |
} |
| 1181 |
if (next === null) { |
| 1182 |
next = curr + curr - prev; |
| 1183 |
} |
| 1184 |
const start = curr - (curr - Math.min(prev, next)) / 2 * percent; |
| 1185 |
const size = Math.abs(next - prev) / 2 * percent; |
| 1186 |
return { |
| 1187 |
chunk: size / stackCount, |
| 1188 |
ratio: options.barPercentage, |
| 1189 |
start |
| 1190 |
}; |
| 1191 |
} |
| 1192 |
function parseFloatBar(entry, item, vScale, i) { |
| 1193 |
const startValue = vScale.parse(entry[0], i); |
| 1194 |
const endValue = vScale.parse(entry[1], i); |
| 1195 |
const min = Math.min(startValue, endValue); |
| 1196 |
const max = Math.max(startValue, endValue); |
| 1197 |
let barStart = min; |
| 1198 |
let barEnd = max; |
| 1199 |
if (Math.abs(min) > Math.abs(max)) { |
| 1200 |
barStart = max; |
| 1201 |
barEnd = min; |
| 1202 |
} |
| 1203 |
item[vScale.axis] = barEnd; |
| 1204 |
item._custom = { |
| 1205 |
barStart, |
| 1206 |
barEnd, |
| 1207 |
start: startValue, |
| 1208 |
end: endValue, |
| 1209 |
min, |
| 1210 |
max |
| 1211 |
}; |
| 1212 |
} |
| 1213 |
function parseValue(entry, item, vScale, i) { |
| 1214 |
if (isArray(entry)) { |
| 1215 |
parseFloatBar(entry, item, vScale, i); |
| 1216 |
} else { |
| 1217 |
item[vScale.axis] = vScale.parse(entry, i); |
| 1218 |
} |
| 1219 |
return item; |
| 1220 |
} |
| 1221 |
function parseArrayOrPrimitive(meta, data, start, count) { |
| 1222 |
const iScale = meta.iScale; |
| 1223 |
const vScale = meta.vScale; |
| 1224 |
const labels = iScale.getLabels(); |
| 1225 |
const singleScale = iScale === vScale; |
| 1226 |
const parsed = []; |
| 1227 |
let i, ilen, item, entry; |
| 1228 |
for (i = start, ilen = start + count; i < ilen; ++i) { |
| 1229 |
entry = data[i]; |
| 1230 |
item = {}; |
| 1231 |
item[iScale.axis] = singleScale || iScale.parse(labels[i], i); |
| 1232 |
parsed.push(parseValue(entry, item, vScale, i)); |
| 1233 |
} |
| 1234 |
return parsed; |
| 1235 |
} |
| 1236 |
function isFloatBar(custom) { |
| 1237 |
return custom && custom.barStart !== undefined && custom.barEnd !== undefined; |
| 1238 |
} |
| 1239 |
class BarController extends DatasetController { |
| 1240 |
parsePrimitiveData(meta, data, start, count) { |
| 1241 |
return parseArrayOrPrimitive(meta, data, start, count); |
| 1242 |
} |
| 1243 |
parseArrayData(meta, data, start, count) { |
| 1244 |
return parseArrayOrPrimitive(meta, data, start, count); |
| 1245 |
} |
| 1246 |
parseObjectData(meta, data, start, count) { |
| 1247 |
const {iScale, vScale} = meta; |
| 1248 |
const {xAxisKey = 'x', yAxisKey = 'y'} = this._parsing; |
| 1249 |
const iAxisKey = iScale.axis === 'x' ? xAxisKey : yAxisKey; |
| 1250 |
const vAxisKey = vScale.axis === 'x' ? xAxisKey : yAxisKey; |
| 1251 |
const parsed = []; |
| 1252 |
let i, ilen, item, obj; |
| 1253 |
for (i = start, ilen = start + count; i < ilen; ++i) { |
| 1254 |
obj = data[i]; |
| 1255 |
item = {}; |
| 1256 |
item[iScale.axis] = iScale.parse(resolveObjectKey(obj, iAxisKey), i); |
| 1257 |
parsed.push(parseValue(resolveObjectKey(obj, vAxisKey), item, vScale, i)); |
| 1258 |
} |
| 1259 |
return parsed; |
| 1260 |
} |
| 1261 |
updateRangeFromParsed(range, scale, parsed, stack) { |
| 1262 |
super.updateRangeFromParsed(range, scale, parsed, stack); |
| 1263 |
const custom = parsed._custom; |
| 1264 |
if (custom && scale === this._cachedMeta.vScale) { |
| 1265 |
range.min = Math.min(range.min, custom.min); |
| 1266 |
range.max = Math.max(range.max, custom.max); |
| 1267 |
} |
| 1268 |
} |
| 1269 |
getLabelAndValue(index) { |
| 1270 |
const me = this; |
| 1271 |
const meta = me._cachedMeta; |
| 1272 |
const {iScale, vScale} = meta; |
| 1273 |
const parsed = me.getParsed(index); |
| 1274 |
const custom = parsed._custom; |
| 1275 |
const value = isFloatBar(custom) |
| 1276 |
? '[' + custom.start + ', ' + custom.end + ']' |
| 1277 |
: '' + vScale.getLabelForValue(parsed[vScale.axis]); |
| 1278 |
return { |
| 1279 |
label: '' + iScale.getLabelForValue(parsed[iScale.axis]), |
| 1280 |
value |
| 1281 |
}; |
| 1282 |
} |
| 1283 |
initialize() { |
| 1284 |
const me = this; |
| 1285 |
me.enableOptionSharing = true; |
| 1286 |
super.initialize(); |
| 1287 |
const meta = me._cachedMeta; |
| 1288 |
meta.stack = me.getDataset().stack; |
| 1289 |
} |
| 1290 |
update(mode) { |
| 1291 |
const me = this; |
| 1292 |
const meta = me._cachedMeta; |
| 1293 |
me.updateElements(meta.data, 0, meta.data.length, mode); |
| 1294 |
} |
| 1295 |
updateElements(bars, start, count, mode) { |
| 1296 |
const me = this; |
| 1297 |
const reset = mode === 'reset'; |
| 1298 |
const vScale = me._cachedMeta.vScale; |
| 1299 |
const base = vScale.getBasePixel(); |
| 1300 |
const horizontal = vScale.isHorizontal(); |
| 1301 |
const ruler = me._getRuler(); |
| 1302 |
const firstOpts = me.resolveDataElementOptions(start, mode); |
| 1303 |
const sharedOptions = me.getSharedOptions(firstOpts); |
| 1304 |
const includeOptions = me.includeOptions(mode, sharedOptions); |
| 1305 |
me.updateSharedOptions(sharedOptions, mode, firstOpts); |
| 1306 |
for (let i = start; i < start + count; i++) { |
| 1307 |
const parsed = me.getParsed(i); |
| 1308 |
const vpixels = reset || isNullOrUndef(parsed[vScale.axis]) ? {base, head: base} : me._calculateBarValuePixels(i); |
| 1309 |
const ipixels = me._calculateBarIndexPixels(i, ruler); |
| 1310 |
const stack = (parsed._stacks || {})[vScale.axis]; |
| 1311 |
const properties = { |
| 1312 |
horizontal, |
| 1313 |
base: vpixels.base, |
| 1314 |
enableBorderRadius: !stack || isFloatBar(parsed._custom) || (me.index === stack._top || me.index === stack._bottom), |
| 1315 |
x: horizontal ? vpixels.head : ipixels.center, |
| 1316 |
y: horizontal ? ipixels.center : vpixels.head, |
| 1317 |
height: horizontal ? ipixels.size : undefined, |
| 1318 |
width: horizontal ? undefined : ipixels.size |
| 1319 |
}; |
| 1320 |
if (includeOptions) { |
| 1321 |
properties.options = sharedOptions || me.resolveDataElementOptions(i, mode); |
| 1322 |
} |
| 1323 |
me.updateElement(bars[i], i, properties, mode); |
| 1324 |
} |
| 1325 |
} |
| 1326 |
_getStacks(last, dataIndex) { |
| 1327 |
const me = this; |
| 1328 |
const meta = me._cachedMeta; |
| 1329 |
const iScale = meta.iScale; |
| 1330 |
const metasets = iScale.getMatchingVisibleMetas(me._type); |
| 1331 |
const stacked = iScale.options.stacked; |
| 1332 |
const ilen = metasets.length; |
| 1333 |
const stacks = []; |
| 1334 |
let i, item; |
| 1335 |
for (i = 0; i < ilen; ++i) { |
| 1336 |
item = metasets[i]; |
| 1337 |
if (typeof dataIndex !== 'undefined') { |
| 1338 |
const val = item.controller.getParsed(dataIndex)[ |
| 1339 |
item.controller._cachedMeta.vScale.axis |
| 1340 |
]; |
| 1341 |
if (isNullOrUndef(val) || isNaN(val)) { |
| 1342 |
continue; |
| 1343 |
} |
| 1344 |
} |
| 1345 |
if (stacked === false || stacks.indexOf(item.stack) === -1 || |
| 1346 |
(stacked === undefined && item.stack === undefined)) { |
| 1347 |
stacks.push(item.stack); |
| 1348 |
} |
| 1349 |
if (item.index === last) { |
| 1350 |
break; |
| 1351 |
} |
| 1352 |
} |
| 1353 |
if (!stacks.length) { |
| 1354 |
stacks.push(undefined); |
| 1355 |
} |
| 1356 |
return stacks; |
| 1357 |
} |
| 1358 |
_getStackCount(index) { |
| 1359 |
return this._getStacks(undefined, index).length; |
| 1360 |
} |
| 1361 |
_getStackIndex(datasetIndex, name, dataIndex) { |
| 1362 |
const stacks = this._getStacks(datasetIndex, dataIndex); |
| 1363 |
const index = (name !== undefined) |
| 1364 |
? stacks.indexOf(name) |
| 1365 |
: -1; |
| 1366 |
return (index === -1) |
| 1367 |
? stacks.length - 1 |
| 1368 |
: index; |
| 1369 |
} |
| 1370 |
_getRuler() { |
| 1371 |
const me = this; |
| 1372 |
const opts = me.options; |
| 1373 |
const meta = me._cachedMeta; |
| 1374 |
const iScale = meta.iScale; |
| 1375 |
const pixels = []; |
| 1376 |
let i, ilen; |
| 1377 |
for (i = 0, ilen = meta.data.length; i < ilen; ++i) { |
| 1378 |
pixels.push(iScale.getPixelForValue(me.getParsed(i)[iScale.axis], i)); |
| 1379 |
} |
| 1380 |
const barThickness = opts.barThickness; |
| 1381 |
const min = barThickness || computeMinSampleSize(iScale); |
| 1382 |
return { |
| 1383 |
min, |
| 1384 |
pixels, |
| 1385 |
start: iScale._startPixel, |
| 1386 |
end: iScale._endPixel, |
| 1387 |
stackCount: me._getStackCount(), |
| 1388 |
scale: iScale, |
| 1389 |
grouped: opts.grouped, |
| 1390 |
ratio: barThickness ? 1 : opts.categoryPercentage * opts.barPercentage |
| 1391 |
}; |
| 1392 |
} |
| 1393 |
_calculateBarValuePixels(index) { |
| 1394 |
const me = this; |
| 1395 |
const {vScale, _stacked} = me._cachedMeta; |
| 1396 |
const {base: baseValue, minBarLength} = me.options; |
| 1397 |
const parsed = me.getParsed(index); |
| 1398 |
const custom = parsed._custom; |
| 1399 |
const floating = isFloatBar(custom); |
| 1400 |
let value = parsed[vScale.axis]; |
| 1401 |
let start = 0; |
| 1402 |
let length = _stacked ? me.applyStack(vScale, parsed, _stacked) : value; |
| 1403 |
let head, size; |
| 1404 |
if (length !== value) { |
| 1405 |
start = length - value; |
| 1406 |
length = value; |
| 1407 |
} |
| 1408 |
if (floating) { |
| 1409 |
value = custom.barStart; |
| 1410 |
length = custom.barEnd - custom.barStart; |
| 1411 |
if (value !== 0 && sign(value) !== sign(custom.barEnd)) { |
| 1412 |
start = 0; |
| 1413 |
} |
| 1414 |
start += value; |
| 1415 |
} |
| 1416 |
const startValue = !isNullOrUndef(baseValue) && !floating ? baseValue : start; |
| 1417 |
let base = vScale.getPixelForValue(startValue); |
| 1418 |
if (this.chart.getDataVisibility(index)) { |
| 1419 |
head = vScale.getPixelForValue(start + length); |
| 1420 |
} else { |
| 1421 |
head = base; |
| 1422 |
} |
| 1423 |
size = head - base; |
| 1424 |
if (minBarLength !== undefined && Math.abs(size) < minBarLength) { |
| 1425 |
size = size < 0 ? -minBarLength : minBarLength; |
| 1426 |
if (value === 0) { |
| 1427 |
base -= size / 2; |
| 1428 |
} |
| 1429 |
head = base + size; |
| 1430 |
} |
| 1431 |
const actualBase = baseValue || 0; |
| 1432 |
if (base === vScale.getPixelForValue(actualBase)) { |
| 1433 |
const halfGrid = vScale.getLineWidthForValue(actualBase) / 2; |
| 1434 |
if (size > 0) { |
| 1435 |
base += halfGrid; |
| 1436 |
size -= halfGrid; |
| 1437 |
} else if (size < 0) { |
| 1438 |
base -= halfGrid; |
| 1439 |
size += halfGrid; |
| 1440 |
} |
| 1441 |
} |
| 1442 |
return { |
| 1443 |
size, |
| 1444 |
base, |
| 1445 |
head, |
| 1446 |
center: head + size / 2 |
| 1447 |
}; |
| 1448 |
} |
| 1449 |
_calculateBarIndexPixels(index, ruler) { |
| 1450 |
const me = this; |
| 1451 |
const scale = ruler.scale; |
| 1452 |
const options = me.options; |
| 1453 |
const skipNull = options.skipNull; |
| 1454 |
const maxBarThickness = valueOrDefault(options.maxBarThickness, Infinity); |
| 1455 |
let center, size; |
| 1456 |
if (ruler.grouped) { |
| 1457 |
const stackCount = skipNull ? me._getStackCount(index) : ruler.stackCount; |
| 1458 |
const range = options.barThickness === 'flex' |
| 1459 |
? computeFlexCategoryTraits(index, ruler, options, stackCount) |
| 1460 |
: computeFitCategoryTraits(index, ruler, options, stackCount); |
| 1461 |
const stackIndex = me._getStackIndex(me.index, me._cachedMeta.stack, skipNull ? index : undefined); |
| 1462 |
center = range.start + (range.chunk * stackIndex) + (range.chunk / 2); |
| 1463 |
size = Math.min(maxBarThickness, range.chunk * range.ratio); |
| 1464 |
} else { |
| 1465 |
center = scale.getPixelForValue(me.getParsed(index)[scale.axis], index); |
| 1466 |
size = Math.min(maxBarThickness, ruler.min * ruler.ratio); |
| 1467 |
} |
| 1468 |
return { |
| 1469 |
base: center - size / 2, |
| 1470 |
head: center + size / 2, |
| 1471 |
center, |
| 1472 |
size |
| 1473 |
}; |
| 1474 |
} |
| 1475 |
draw() { |
| 1476 |
const me = this; |
| 1477 |
const chart = me.chart; |
| 1478 |
const meta = me._cachedMeta; |
| 1479 |
const vScale = meta.vScale; |
| 1480 |
const rects = meta.data; |
| 1481 |
const ilen = rects.length; |
| 1482 |
let i = 0; |
| 1483 |
clipArea(chart.ctx, chart.chartArea); |
| 1484 |
for (; i < ilen; ++i) { |
| 1485 |
if (me.getParsed(i)[vScale.axis] !== null) { |
| 1486 |
rects[i].draw(me._ctx); |
| 1487 |
} |
| 1488 |
} |
| 1489 |
unclipArea(chart.ctx); |
| 1490 |
} |
| 1491 |
} |
| 1492 |
BarController.id = 'bar'; |
| 1493 |
BarController.defaults = { |
| 1494 |
datasetElementType: false, |
| 1495 |
dataElementType: 'bar', |
| 1496 |
categoryPercentage: 0.8, |
| 1497 |
barPercentage: 0.9, |
| 1498 |
grouped: true, |
| 1499 |
animations: { |
| 1500 |
numbers: { |
| 1501 |
type: 'number', |
| 1502 |
properties: ['x', 'y', 'base', 'width', 'height'] |
| 1503 |
} |
| 1504 |
} |
| 1505 |
}; |
| 1506 |
BarController.overrides = { |
| 1507 |
interaction: { |
| 1508 |
mode: 'index' |
| 1509 |
}, |
| 1510 |
scales: { |
| 1511 |
_index_: { |
| 1512 |
type: 'category', |
| 1513 |
offset: true, |
| 1514 |
grid: { |
| 1515 |
offset: true |
| 1516 |
} |
| 1517 |
}, |
| 1518 |
_value_: { |
| 1519 |
type: 'linear', |
| 1520 |
beginAtZero: true, |
| 1521 |
} |
| 1522 |
} |
| 1523 |
}; |
| 1524 |
|
| 1525 |
class BubbleController extends DatasetController { |
| 1526 |
initialize() { |
| 1527 |
this.enableOptionSharing = true; |
| 1528 |
super.initialize(); |
| 1529 |
} |
| 1530 |
parseObjectData(meta, data, start, count) { |
| 1531 |
const {xScale, yScale} = meta; |
| 1532 |
const {xAxisKey = 'x', yAxisKey = 'y'} = this._parsing; |
| 1533 |
const parsed = []; |
| 1534 |
let i, ilen, item; |
| 1535 |
for (i = start, ilen = start + count; i < ilen; ++i) { |
| 1536 |
item = data[i]; |
| 1537 |
parsed.push({ |
| 1538 |
x: xScale.parse(resolveObjectKey(item, xAxisKey), i), |
| 1539 |
y: yScale.parse(resolveObjectKey(item, yAxisKey), i), |
| 1540 |
_custom: item && item.r && +item.r |
| 1541 |
}); |
| 1542 |
} |
| 1543 |
return parsed; |
| 1544 |
} |
| 1545 |
getMaxOverflow() { |
| 1546 |
const {data, _parsed} = this._cachedMeta; |
| 1547 |
let max = 0; |
| 1548 |
for (let i = data.length - 1; i >= 0; --i) { |
| 1549 |
max = Math.max(max, data[i].size() / 2, _parsed[i]._custom); |
| 1550 |
} |
| 1551 |
return max > 0 && max; |
| 1552 |
} |
| 1553 |
getLabelAndValue(index) { |
| 1554 |
const me = this; |
| 1555 |
const meta = me._cachedMeta; |
| 1556 |
const {xScale, yScale} = meta; |
| 1557 |
const parsed = me.getParsed(index); |
| 1558 |
const x = xScale.getLabelForValue(parsed.x); |
| 1559 |
const y = yScale.getLabelForValue(parsed.y); |
| 1560 |
const r = parsed._custom; |
| 1561 |
return { |
| 1562 |
label: meta.label, |
| 1563 |
value: '(' + x + ', ' + y + (r ? ', ' + r : '') + ')' |
| 1564 |
}; |
| 1565 |
} |
| 1566 |
update(mode) { |
| 1567 |
const me = this; |
| 1568 |
const points = me._cachedMeta.data; |
| 1569 |
me.updateElements(points, 0, points.length, mode); |
| 1570 |
} |
| 1571 |
updateElements(points, start, count, mode) { |
| 1572 |
const me = this; |
| 1573 |
const reset = mode === 'reset'; |
| 1574 |
const {xScale, yScale} = me._cachedMeta; |
| 1575 |
const firstOpts = me.resolveDataElementOptions(start, mode); |
| 1576 |
const sharedOptions = me.getSharedOptions(firstOpts); |
| 1577 |
const includeOptions = me.includeOptions(mode, sharedOptions); |
| 1578 |
for (let i = start; i < start + count; i++) { |
| 1579 |
const point = points[i]; |
| 1580 |
const parsed = !reset && me.getParsed(i); |
| 1581 |
const x = reset ? xScale.getPixelForDecimal(0.5) : xScale.getPixelForValue(parsed.x); |
| 1582 |
const y = reset ? yScale.getBasePixel() : yScale.getPixelForValue(parsed.y); |
| 1583 |
const properties = { |
| 1584 |
x, |
| 1585 |
y, |
| 1586 |
skip: isNaN(x) || isNaN(y) |
| 1587 |
}; |
| 1588 |
if (includeOptions) { |
| 1589 |
properties.options = me.resolveDataElementOptions(i, mode); |
| 1590 |
if (reset) { |
| 1591 |
properties.options.radius = 0; |
| 1592 |
} |
| 1593 |
} |
| 1594 |
me.updateElement(point, i, properties, mode); |
| 1595 |
} |
| 1596 |
me.updateSharedOptions(sharedOptions, mode, firstOpts); |
| 1597 |
} |
| 1598 |
resolveDataElementOptions(index, mode) { |
| 1599 |
const parsed = this.getParsed(index); |
| 1600 |
let values = super.resolveDataElementOptions(index, mode); |
| 1601 |
if (values.$shared) { |
| 1602 |
values = Object.assign({}, values, {$shared: false}); |
| 1603 |
} |
| 1604 |
const radius = values.radius; |
| 1605 |
if (mode !== 'active') { |
| 1606 |
values.radius = 0; |
| 1607 |
} |
| 1608 |
values.radius += valueOrDefault(parsed && parsed._custom, radius); |
| 1609 |
return values; |
| 1610 |
} |
| 1611 |
} |
| 1612 |
BubbleController.id = 'bubble'; |
| 1613 |
BubbleController.defaults = { |
| 1614 |
datasetElementType: false, |
| 1615 |
dataElementType: 'point', |
| 1616 |
animations: { |
| 1617 |
numbers: { |
| 1618 |
type: 'number', |
| 1619 |
properties: ['x', 'y', 'borderWidth', 'radius'] |
| 1620 |
} |
| 1621 |
} |
| 1622 |
}; |
| 1623 |
BubbleController.overrides = { |
| 1624 |
scales: { |
| 1625 |
x: { |
| 1626 |
type: 'linear' |
| 1627 |
}, |
| 1628 |
y: { |
| 1629 |
type: 'linear' |
| 1630 |
} |
| 1631 |
}, |
| 1632 |
plugins: { |
| 1633 |
tooltip: { |
| 1634 |
callbacks: { |
| 1635 |
title() { |
| 1636 |
return ''; |
| 1637 |
} |
| 1638 |
} |
| 1639 |
} |
| 1640 |
} |
| 1641 |
}; |
| 1642 |
|
| 1643 |
function getRatioAndOffset(rotation, circumference, cutout) { |
| 1644 |
let ratioX = 1; |
| 1645 |
let ratioY = 1; |
| 1646 |
let offsetX = 0; |
| 1647 |
let offsetY = 0; |
| 1648 |
if (circumference < TAU) { |
| 1649 |
const startAngle = rotation; |
| 1650 |
const endAngle = startAngle + circumference; |
| 1651 |
const startX = Math.cos(startAngle); |
| 1652 |
const startY = Math.sin(startAngle); |
| 1653 |
const endX = Math.cos(endAngle); |
| 1654 |
const endY = Math.sin(endAngle); |
| 1655 |
const calcMax = (angle, a, b) => _angleBetween(angle, startAngle, endAngle) ? 1 : Math.max(a, a * cutout, b, b * cutout); |
| 1656 |
const calcMin = (angle, a, b) => _angleBetween(angle, startAngle, endAngle) ? -1 : Math.min(a, a * cutout, b, b * cutout); |
| 1657 |
const maxX = calcMax(0, startX, endX); |
| 1658 |
const maxY = calcMax(HALF_PI, startY, endY); |
| 1659 |
const minX = calcMin(PI, startX, endX); |
| 1660 |
const minY = calcMin(PI + HALF_PI, startY, endY); |
| 1661 |
ratioX = (maxX - minX) / 2; |
| 1662 |
ratioY = (maxY - minY) / 2; |
| 1663 |
offsetX = -(maxX + minX) / 2; |
| 1664 |
offsetY = -(maxY + minY) / 2; |
| 1665 |
} |
| 1666 |
return {ratioX, ratioY, offsetX, offsetY}; |
| 1667 |
} |
| 1668 |
class DoughnutController extends DatasetController { |
| 1669 |
constructor(chart, datasetIndex) { |
| 1670 |
super(chart, datasetIndex); |
| 1671 |
this.enableOptionSharing = true; |
| 1672 |
this.innerRadius = undefined; |
| 1673 |
this.outerRadius = undefined; |
| 1674 |
this.offsetX = undefined; |
| 1675 |
this.offsetY = undefined; |
| 1676 |
} |
| 1677 |
linkScales() {} |
| 1678 |
parse(start, count) { |
| 1679 |
const data = this.getDataset().data; |
| 1680 |
const meta = this._cachedMeta; |
| 1681 |
let i, ilen; |
| 1682 |
for (i = start, ilen = start + count; i < ilen; ++i) { |
| 1683 |
meta._parsed[i] = +data[i]; |
| 1684 |
} |
| 1685 |
} |
| 1686 |
_getRotation() { |
| 1687 |
return toRadians(this.options.rotation - 90); |
| 1688 |
} |
| 1689 |
_getCircumference() { |
| 1690 |
return toRadians(this.options.circumference); |
| 1691 |
} |
| 1692 |
_getRotationExtents() { |
| 1693 |
let min = TAU; |
| 1694 |
let max = -TAU; |
| 1695 |
const me = this; |
| 1696 |
for (let i = 0; i < me.chart.data.datasets.length; ++i) { |
| 1697 |
if (me.chart.isDatasetVisible(i)) { |
| 1698 |
const controller = me.chart.getDatasetMeta(i).controller; |
| 1699 |
const rotation = controller._getRotation(); |
| 1700 |
const circumference = controller._getCircumference(); |
| 1701 |
min = Math.min(min, rotation); |
| 1702 |
max = Math.max(max, rotation + circumference); |
| 1703 |
} |
| 1704 |
} |
| 1705 |
return { |
| 1706 |
rotation: min, |
| 1707 |
circumference: max - min, |
| 1708 |
}; |
| 1709 |
} |
| 1710 |
update(mode) { |
| 1711 |
const me = this; |
| 1712 |
const chart = me.chart; |
| 1713 |
const {chartArea} = chart; |
| 1714 |
const meta = me._cachedMeta; |
| 1715 |
const arcs = meta.data; |
| 1716 |
const spacing = me.getMaxBorderWidth() + me.getMaxOffset(arcs); |
| 1717 |
const maxSize = Math.max((Math.min(chartArea.width, chartArea.height) - spacing) / 2, 0); |
| 1718 |
const cutout = Math.min(toPercentage(me.options.cutout, maxSize), 1); |
| 1719 |
const chartWeight = me._getRingWeight(me.index); |
| 1720 |
const {circumference, rotation} = me._getRotationExtents(); |
| 1721 |
const {ratioX, ratioY, offsetX, offsetY} = getRatioAndOffset(rotation, circumference, cutout); |
| 1722 |
const maxWidth = (chartArea.width - spacing) / ratioX; |
| 1723 |
const maxHeight = (chartArea.height - spacing) / ratioY; |
| 1724 |
const maxRadius = Math.max(Math.min(maxWidth, maxHeight) / 2, 0); |
| 1725 |
const outerRadius = toDimension(me.options.radius, maxRadius); |
| 1726 |
const innerRadius = Math.max(outerRadius * cutout, 0); |
| 1727 |
const radiusLength = (outerRadius - innerRadius) / me._getVisibleDatasetWeightTotal(); |
| 1728 |
me.offsetX = offsetX * outerRadius; |
| 1729 |
me.offsetY = offsetY * outerRadius; |
| 1730 |
meta.total = me.calculateTotal(); |
| 1731 |
me.outerRadius = outerRadius - radiusLength * me._getRingWeightOffset(me.index); |
| 1732 |
me.innerRadius = Math.max(me.outerRadius - radiusLength * chartWeight, 0); |
| 1733 |
me.updateElements(arcs, 0, arcs.length, mode); |
| 1734 |
} |
| 1735 |
_circumference(i, reset) { |
| 1736 |
const me = this; |
| 1737 |
const opts = me.options; |
| 1738 |
const meta = me._cachedMeta; |
| 1739 |
const circumference = me._getCircumference(); |
| 1740 |
if ((reset && opts.animation.animateRotate) || !this.chart.getDataVisibility(i) || meta._parsed[i] === null) { |
| 1741 |
return 0; |
| 1742 |
} |
| 1743 |
return me.calculateCircumference(meta._parsed[i] * circumference / TAU); |
| 1744 |
} |
| 1745 |
updateElements(arcs, start, count, mode) { |
| 1746 |
const me = this; |
| 1747 |
const reset = mode === 'reset'; |
| 1748 |
const chart = me.chart; |
| 1749 |
const chartArea = chart.chartArea; |
| 1750 |
const opts = chart.options; |
| 1751 |
const animationOpts = opts.animation; |
| 1752 |
const centerX = (chartArea.left + chartArea.right) / 2; |
| 1753 |
const centerY = (chartArea.top + chartArea.bottom) / 2; |
| 1754 |
const animateScale = reset && animationOpts.animateScale; |
| 1755 |
const innerRadius = animateScale ? 0 : me.innerRadius; |
| 1756 |
const outerRadius = animateScale ? 0 : me.outerRadius; |
| 1757 |
const firstOpts = me.resolveDataElementOptions(start, mode); |
| 1758 |
const sharedOptions = me.getSharedOptions(firstOpts); |
| 1759 |
const includeOptions = me.includeOptions(mode, sharedOptions); |
| 1760 |
let startAngle = me._getRotation(); |
| 1761 |
let i; |
| 1762 |
for (i = 0; i < start; ++i) { |
| 1763 |
startAngle += me._circumference(i, reset); |
| 1764 |
} |
| 1765 |
for (i = start; i < start + count; ++i) { |
| 1766 |
const circumference = me._circumference(i, reset); |
| 1767 |
const arc = arcs[i]; |
| 1768 |
const properties = { |
| 1769 |
x: centerX + me.offsetX, |
| 1770 |
y: centerY + me.offsetY, |
| 1771 |
startAngle, |
| 1772 |
endAngle: startAngle + circumference, |
| 1773 |
circumference, |
| 1774 |
outerRadius, |
| 1775 |
innerRadius |
| 1776 |
}; |
| 1777 |
if (includeOptions) { |
| 1778 |
properties.options = sharedOptions || me.resolveDataElementOptions(i, mode); |
| 1779 |
} |
| 1780 |
startAngle += circumference; |
| 1781 |
me.updateElement(arc, i, properties, mode); |
| 1782 |
} |
| 1783 |
me.updateSharedOptions(sharedOptions, mode, firstOpts); |
| 1784 |
} |
| 1785 |
calculateTotal() { |
| 1786 |
const meta = this._cachedMeta; |
| 1787 |
const metaData = meta.data; |
| 1788 |
let total = 0; |
| 1789 |
let i; |
| 1790 |
for (i = 0; i < metaData.length; i++) { |
| 1791 |
const value = meta._parsed[i]; |
| 1792 |
if (value !== null && !isNaN(value) && this.chart.getDataVisibility(i)) { |
| 1793 |
total += Math.abs(value); |
| 1794 |
} |
| 1795 |
} |
| 1796 |
return total; |
| 1797 |
} |
| 1798 |
calculateCircumference(value) { |
| 1799 |
const total = this._cachedMeta.total; |
| 1800 |
if (total > 0 && !isNaN(value)) { |
| 1801 |
return TAU * (Math.abs(value) / total); |
| 1802 |
} |
| 1803 |
return 0; |
| 1804 |
} |
| 1805 |
getLabelAndValue(index) { |
| 1806 |
const me = this; |
| 1807 |
const meta = me._cachedMeta; |
| 1808 |
const chart = me.chart; |
| 1809 |
const labels = chart.data.labels || []; |
| 1810 |
const value = formatNumber(meta._parsed[index], chart.options.locale); |
| 1811 |
return { |
| 1812 |
label: labels[index] || '', |
| 1813 |
value, |
| 1814 |
}; |
| 1815 |
} |
| 1816 |
getMaxBorderWidth(arcs) { |
| 1817 |
const me = this; |
| 1818 |
let max = 0; |
| 1819 |
const chart = me.chart; |
| 1820 |
let i, ilen, meta, controller, options; |
| 1821 |
if (!arcs) { |
| 1822 |
for (i = 0, ilen = chart.data.datasets.length; i < ilen; ++i) { |
| 1823 |
if (chart.isDatasetVisible(i)) { |
| 1824 |
meta = chart.getDatasetMeta(i); |
| 1825 |
arcs = meta.data; |
| 1826 |
controller = meta.controller; |
| 1827 |
if (controller !== me) { |
| 1828 |
controller.configure(); |
| 1829 |
} |
| 1830 |
break; |
| 1831 |
} |
| 1832 |
} |
| 1833 |
} |
| 1834 |
if (!arcs) { |
| 1835 |
return 0; |
| 1836 |
} |
| 1837 |
for (i = 0, ilen = arcs.length; i < ilen; ++i) { |
| 1838 |
options = controller.resolveDataElementOptions(i); |
| 1839 |
if (options.borderAlign !== 'inner') { |
| 1840 |
max = Math.max(max, options.borderWidth || 0, options.hoverBorderWidth || 0); |
| 1841 |
} |
| 1842 |
} |
| 1843 |
return max; |
| 1844 |
} |
| 1845 |
getMaxOffset(arcs) { |
| 1846 |
let max = 0; |
| 1847 |
for (let i = 0, ilen = arcs.length; i < ilen; ++i) { |
| 1848 |
const options = this.resolveDataElementOptions(i); |
| 1849 |
max = Math.max(max, options.offset || 0, options.hoverOffset || 0); |
| 1850 |
} |
| 1851 |
return max; |
| 1852 |
} |
| 1853 |
_getRingWeightOffset(datasetIndex) { |
| 1854 |
let ringWeightOffset = 0; |
| 1855 |
for (let i = 0; i < datasetIndex; ++i) { |
| 1856 |
if (this.chart.isDatasetVisible(i)) { |
| 1857 |
ringWeightOffset += this._getRingWeight(i); |
| 1858 |
} |
| 1859 |
} |
| 1860 |
return ringWeightOffset; |
| 1861 |
} |
| 1862 |
_getRingWeight(datasetIndex) { |
| 1863 |
return Math.max(valueOrDefault(this.chart.data.datasets[datasetIndex].weight, 1), 0); |
| 1864 |
} |
| 1865 |
_getVisibleDatasetWeightTotal() { |
| 1866 |
return this._getRingWeightOffset(this.chart.data.datasets.length) || 1; |
| 1867 |
} |
| 1868 |
} |
| 1869 |
DoughnutController.id = 'doughnut'; |
| 1870 |
DoughnutController.defaults = { |
| 1871 |
datasetElementType: false, |
| 1872 |
dataElementType: 'arc', |
| 1873 |
animation: { |
| 1874 |
animateRotate: true, |
| 1875 |
animateScale: false |
| 1876 |
}, |
| 1877 |
animations: { |
| 1878 |
numbers: { |
| 1879 |
type: 'number', |
| 1880 |
properties: ['circumference', 'endAngle', 'innerRadius', 'outerRadius', 'startAngle', 'x', 'y', 'offset', 'borderWidth'] |
| 1881 |
}, |
| 1882 |
}, |
| 1883 |
cutout: '50%', |
| 1884 |
rotation: 0, |
| 1885 |
circumference: 360, |
| 1886 |
radius: '100%', |
| 1887 |
indexAxis: 'r', |
| 1888 |
}; |
| 1889 |
DoughnutController.overrides = { |
| 1890 |
aspectRatio: 1, |
| 1891 |
plugins: { |
| 1892 |
legend: { |
| 1893 |
labels: { |
| 1894 |
generateLabels(chart) { |
| 1895 |
const data = chart.data; |
| 1896 |
if (data.labels.length && data.datasets.length) { |
| 1897 |
return data.labels.map((label, i) => { |
| 1898 |
const meta = chart.getDatasetMeta(0); |
| 1899 |
const style = meta.controller.getStyle(i); |
| 1900 |
return { |
| 1901 |
text: label, |
| 1902 |
fillStyle: style.backgroundColor, |
| 1903 |
strokeStyle: style.borderColor, |
| 1904 |
lineWidth: style.borderWidth, |
| 1905 |
hidden: !chart.getDataVisibility(i), |
| 1906 |
index: i |
| 1907 |
}; |
| 1908 |
}); |
| 1909 |
} |
| 1910 |
return []; |
| 1911 |
} |
| 1912 |
}, |
| 1913 |
onClick(e, legendItem, legend) { |
| 1914 |
legend.chart.toggleDataVisibility(legendItem.index); |
| 1915 |
legend.chart.update(); |
| 1916 |
} |
| 1917 |
}, |
| 1918 |
tooltip: { |
| 1919 |
callbacks: { |
| 1920 |
title() { |
| 1921 |
return ''; |
| 1922 |
}, |
| 1923 |
label(tooltipItem) { |
| 1924 |
let dataLabel = tooltipItem.label; |
| 1925 |
const value = ': ' + tooltipItem.formattedValue; |
| 1926 |
if (isArray(dataLabel)) { |
| 1927 |
dataLabel = dataLabel.slice(); |
| 1928 |
dataLabel[0] += value; |
| 1929 |
} else { |
| 1930 |
dataLabel += value; |
| 1931 |
} |
| 1932 |
return dataLabel; |
| 1933 |
} |
| 1934 |
} |
| 1935 |
} |
| 1936 |
} |
| 1937 |
}; |
| 1938 |
|
| 1939 |
class LineController extends DatasetController { |
| 1940 |
initialize() { |
| 1941 |
this.enableOptionSharing = true; |
| 1942 |
super.initialize(); |
| 1943 |
} |
| 1944 |
update(mode) { |
| 1945 |
const me = this; |
| 1946 |
const meta = me._cachedMeta; |
| 1947 |
const {dataset: line, data: points = [], _dataset} = meta; |
| 1948 |
const animationsDisabled = me.chart._animationsDisabled; |
| 1949 |
let {start, count} = getStartAndCountOfVisiblePoints(meta, points, animationsDisabled); |
| 1950 |
me._drawStart = start; |
| 1951 |
me._drawCount = count; |
| 1952 |
if (scaleRangesChanged(meta)) { |
| 1953 |
start = 0; |
| 1954 |
count = points.length; |
| 1955 |
} |
| 1956 |
line._decimated = !!_dataset._decimated; |
| 1957 |
line.points = points; |
| 1958 |
const options = me.resolveDatasetElementOptions(mode); |
| 1959 |
if (!me.options.showLine) { |
| 1960 |
options.borderWidth = 0; |
| 1961 |
} |
| 1962 |
options.segment = me.options.segment; |
| 1963 |
me.updateElement(line, undefined, { |
| 1964 |
animated: !animationsDisabled, |
| 1965 |
options |
| 1966 |
}, mode); |
| 1967 |
me.updateElements(points, start, count, mode); |
| 1968 |
} |
| 1969 |
updateElements(points, start, count, mode) { |
| 1970 |
const me = this; |
| 1971 |
const reset = mode === 'reset'; |
| 1972 |
const {xScale, yScale, _stacked} = me._cachedMeta; |
| 1973 |
const firstOpts = me.resolveDataElementOptions(start, mode); |
| 1974 |
const sharedOptions = me.getSharedOptions(firstOpts); |
| 1975 |
const includeOptions = me.includeOptions(mode, sharedOptions); |
| 1976 |
const spanGaps = me.options.spanGaps; |
| 1977 |
const maxGapLength = isNumber(spanGaps) ? spanGaps : Number.POSITIVE_INFINITY; |
| 1978 |
const directUpdate = me.chart._animationsDisabled || reset || mode === 'none'; |
| 1979 |
let prevParsed = start > 0 && me.getParsed(start - 1); |
| 1980 |
for (let i = start; i < start + count; ++i) { |
| 1981 |
const point = points[i]; |
| 1982 |
const parsed = me.getParsed(i); |
| 1983 |
const properties = directUpdate ? point : {}; |
| 1984 |
const nullData = isNullOrUndef(parsed.y); |
| 1985 |
const x = properties.x = xScale.getPixelForValue(parsed.x, i); |
| 1986 |
const y = properties.y = reset || nullData ? yScale.getBasePixel() : yScale.getPixelForValue(_stacked ? me.applyStack(yScale, parsed, _stacked) : parsed.y, i); |
| 1987 |
properties.skip = isNaN(x) || isNaN(y) || nullData; |
| 1988 |
properties.stop = i > 0 && (parsed.x - prevParsed.x) > maxGapLength; |
| 1989 |
properties.parsed = parsed; |
| 1990 |
if (includeOptions) { |
| 1991 |
properties.options = sharedOptions || me.resolveDataElementOptions(i, mode); |
| 1992 |
} |
| 1993 |
if (!directUpdate) { |
| 1994 |
me.updateElement(point, i, properties, mode); |
| 1995 |
} |
| 1996 |
prevParsed = parsed; |
| 1997 |
} |
| 1998 |
me.updateSharedOptions(sharedOptions, mode, firstOpts); |
| 1999 |
} |
| 2000 |
getMaxOverflow() { |
| 2001 |
const me = this; |
| 2002 |
const meta = me._cachedMeta; |
| 2003 |
const dataset = meta.dataset; |
| 2004 |
const border = dataset.options && dataset.options.borderWidth || 0; |
| 2005 |
const data = meta.data || []; |
| 2006 |
if (!data.length) { |
| 2007 |
return border; |
| 2008 |
} |
| 2009 |
const firstPoint = data[0].size(me.resolveDataElementOptions(0)); |
| 2010 |
const lastPoint = data[data.length - 1].size(me.resolveDataElementOptions(data.length - 1)); |
| 2011 |
return Math.max(border, firstPoint, lastPoint) / 2; |
| 2012 |
} |
| 2013 |
draw() { |
| 2014 |
this._cachedMeta.dataset.updateControlPoints(this.chart.chartArea); |
| 2015 |
super.draw(); |
| 2016 |
} |
| 2017 |
} |
| 2018 |
LineController.id = 'line'; |
| 2019 |
LineController.defaults = { |
| 2020 |
datasetElementType: 'line', |
| 2021 |
dataElementType: 'point', |
| 2022 |
showLine: true, |
| 2023 |
spanGaps: false, |
| 2024 |
}; |
| 2025 |
LineController.overrides = { |
| 2026 |
scales: { |
| 2027 |
_index_: { |
| 2028 |
type: 'category', |
| 2029 |
}, |
| 2030 |
_value_: { |
| 2031 |
type: 'linear', |
| 2032 |
}, |
| 2033 |
} |
| 2034 |
}; |
| 2035 |
function getStartAndCountOfVisiblePoints(meta, points, animationsDisabled) { |
| 2036 |
const pointCount = points.length; |
| 2037 |
let start = 0; |
| 2038 |
let count = pointCount; |
| 2039 |
if (meta._sorted) { |
| 2040 |
const {iScale, _parsed} = meta; |
| 2041 |
const axis = iScale.axis; |
| 2042 |
const {min, max, minDefined, maxDefined} = iScale.getUserBounds(); |
| 2043 |
if (minDefined) { |
| 2044 |
start = _limitValue(Math.min( |
| 2045 |
_lookupByKey(_parsed, iScale.axis, min).lo, |
| 2046 |
animationsDisabled ? pointCount : _lookupByKey(points, axis, iScale.getPixelForValue(min)).lo), |
| 2047 |
0, pointCount - 1); |
| 2048 |
} |
| 2049 |
if (maxDefined) { |
| 2050 |
count = _limitValue(Math.max( |
| 2051 |
_lookupByKey(_parsed, iScale.axis, max).hi + 1, |
| 2052 |
animationsDisabled ? 0 : _lookupByKey(points, axis, iScale.getPixelForValue(max)).hi + 1), |
| 2053 |
start, pointCount) - start; |
| 2054 |
} else { |
| 2055 |
count = pointCount - start; |
| 2056 |
} |
| 2057 |
} |
| 2058 |
return {start, count}; |
| 2059 |
} |
| 2060 |
function scaleRangesChanged(meta) { |
| 2061 |
const {xScale, yScale, _scaleRanges} = meta; |
| 2062 |
const newRanges = { |
| 2063 |
xmin: xScale.min, |
| 2064 |
xmax: xScale.max, |
| 2065 |
ymin: yScale.min, |
| 2066 |
ymax: yScale.max |
| 2067 |
}; |
| 2068 |
if (!_scaleRanges) { |
| 2069 |
meta._scaleRanges = newRanges; |
| 2070 |
return true; |
| 2071 |
} |
| 2072 |
const changed = _scaleRanges.xmin !== xScale.min |
| 2073 |
|| _scaleRanges.xmax !== xScale.max |
| 2074 |
|| _scaleRanges.ymin !== yScale.min |
| 2075 |
|| _scaleRanges.ymax !== yScale.max; |
| 2076 |
Object.assign(_scaleRanges, newRanges); |
| 2077 |
return changed; |
| 2078 |
} |
| 2079 |
|
| 2080 |
class PolarAreaController extends DatasetController { |
| 2081 |
constructor(chart, datasetIndex) { |
| 2082 |
super(chart, datasetIndex); |
| 2083 |
this.innerRadius = undefined; |
| 2084 |
this.outerRadius = undefined; |
| 2085 |
} |
| 2086 |
update(mode) { |
| 2087 |
const arcs = this._cachedMeta.data; |
| 2088 |
this._updateRadius(); |
| 2089 |
this.updateElements(arcs, 0, arcs.length, mode); |
| 2090 |
} |
| 2091 |
_updateRadius() { |
| 2092 |
const me = this; |
| 2093 |
const chart = me.chart; |
| 2094 |
const chartArea = chart.chartArea; |
| 2095 |
const opts = chart.options; |
| 2096 |
const minSize = Math.min(chartArea.right - chartArea.left, chartArea.bottom - chartArea.top); |
| 2097 |
const outerRadius = Math.max(minSize / 2, 0); |
| 2098 |
const innerRadius = Math.max(opts.cutoutPercentage ? (outerRadius / 100) * (opts.cutoutPercentage) : 1, 0); |
| 2099 |
const radiusLength = (outerRadius - innerRadius) / chart.getVisibleDatasetCount(); |
| 2100 |
me.outerRadius = outerRadius - (radiusLength * me.index); |
| 2101 |
me.innerRadius = me.outerRadius - radiusLength; |
| 2102 |
} |
| 2103 |
updateElements(arcs, start, count, mode) { |
| 2104 |
const me = this; |
| 2105 |
const reset = mode === 'reset'; |
| 2106 |
const chart = me.chart; |
| 2107 |
const dataset = me.getDataset(); |
| 2108 |
const opts = chart.options; |
| 2109 |
const animationOpts = opts.animation; |
| 2110 |
const scale = me._cachedMeta.rScale; |
| 2111 |
const centerX = scale.xCenter; |
| 2112 |
const centerY = scale.yCenter; |
| 2113 |
const datasetStartAngle = scale.getIndexAngle(0) - 0.5 * PI; |
| 2114 |
let angle = datasetStartAngle; |
| 2115 |
let i; |
| 2116 |
const defaultAngle = 360 / me.countVisibleElements(); |
| 2117 |
for (i = 0; i < start; ++i) { |
| 2118 |
angle += me._computeAngle(i, mode, defaultAngle); |
| 2119 |
} |
| 2120 |
for (i = start; i < start + count; i++) { |
| 2121 |
const arc = arcs[i]; |
| 2122 |
let startAngle = angle; |
| 2123 |
let endAngle = angle + me._computeAngle(i, mode, defaultAngle); |
| 2124 |
let outerRadius = chart.getDataVisibility(i) ? scale.getDistanceFromCenterForValue(dataset.data[i]) : 0; |
| 2125 |
angle = endAngle; |
| 2126 |
if (reset) { |
| 2127 |
if (animationOpts.animateScale) { |
| 2128 |
outerRadius = 0; |
| 2129 |
} |
| 2130 |
if (animationOpts.animateRotate) { |
| 2131 |
startAngle = endAngle = datasetStartAngle; |
| 2132 |
} |
| 2133 |
} |
| 2134 |
const properties = { |
| 2135 |
x: centerX, |
| 2136 |
y: centerY, |
| 2137 |
innerRadius: 0, |
| 2138 |
outerRadius, |
| 2139 |
startAngle, |
| 2140 |
endAngle, |
| 2141 |
options: me.resolveDataElementOptions(i, mode) |
| 2142 |
}; |
| 2143 |
me.updateElement(arc, i, properties, mode); |
| 2144 |
} |
| 2145 |
} |
| 2146 |
countVisibleElements() { |
| 2147 |
const dataset = this.getDataset(); |
| 2148 |
const meta = this._cachedMeta; |
| 2149 |
let count = 0; |
| 2150 |
meta.data.forEach((element, index) => { |
| 2151 |
if (!isNaN(dataset.data[index]) && this.chart.getDataVisibility(index)) { |
| 2152 |
count++; |
| 2153 |
} |
| 2154 |
}); |
| 2155 |
return count; |
| 2156 |
} |
| 2157 |
_computeAngle(index, mode, defaultAngle) { |
| 2158 |
return this.chart.getDataVisibility(index) |
| 2159 |
? toRadians(this.resolveDataElementOptions(index, mode).angle || defaultAngle) |
| 2160 |
: 0; |
| 2161 |
} |
| 2162 |
} |
| 2163 |
PolarAreaController.id = 'polarArea'; |
| 2164 |
PolarAreaController.defaults = { |
| 2165 |
dataElementType: 'arc', |
| 2166 |
animation: { |
| 2167 |
animateRotate: true, |
| 2168 |
animateScale: true |
| 2169 |
}, |
| 2170 |
animations: { |
| 2171 |
numbers: { |
| 2172 |
type: 'number', |
| 2173 |
properties: ['x', 'y', 'startAngle', 'endAngle', 'innerRadius', 'outerRadius'] |
| 2174 |
}, |
| 2175 |
}, |
| 2176 |
indexAxis: 'r', |
| 2177 |
startAngle: 0, |
| 2178 |
}; |
| 2179 |
PolarAreaController.overrides = { |
| 2180 |
aspectRatio: 1, |
| 2181 |
plugins: { |
| 2182 |
legend: { |
| 2183 |
labels: { |
| 2184 |
generateLabels(chart) { |
| 2185 |
const data = chart.data; |
| 2186 |
if (data.labels.length && data.datasets.length) { |
| 2187 |
return data.labels.map((label, i) => { |
| 2188 |
const meta = chart.getDatasetMeta(0); |
| 2189 |
const style = meta.controller.getStyle(i); |
| 2190 |
return { |
| 2191 |
text: label, |
| 2192 |
fillStyle: style.backgroundColor, |
| 2193 |
strokeStyle: style.borderColor, |
| 2194 |
lineWidth: style.borderWidth, |
| 2195 |
hidden: !chart.getDataVisibility(i), |
| 2196 |
index: i |
| 2197 |
}; |
| 2198 |
}); |
| 2199 |
} |
| 2200 |
return []; |
| 2201 |
} |
| 2202 |
}, |
| 2203 |
onClick(e, legendItem, legend) { |
| 2204 |
legend.chart.toggleDataVisibility(legendItem.index); |
| 2205 |
legend.chart.update(); |
| 2206 |
} |
| 2207 |
}, |
| 2208 |
tooltip: { |
| 2209 |
callbacks: { |
| 2210 |
title() { |
| 2211 |
return ''; |
| 2212 |
}, |
| 2213 |
label(context) { |
| 2214 |
return context.chart.data.labels[context.dataIndex] + ': ' + context.formattedValue; |
| 2215 |
} |
| 2216 |
} |
| 2217 |
} |
| 2218 |
}, |
| 2219 |
scales: { |
| 2220 |
r: { |
| 2221 |
type: 'radialLinear', |
| 2222 |
angleLines: { |
| 2223 |
display: false |
| 2224 |
}, |
| 2225 |
beginAtZero: true, |
| 2226 |
grid: { |
| 2227 |
circular: true |
| 2228 |
}, |
| 2229 |
pointLabels: { |
| 2230 |
display: false |
| 2231 |
}, |
| 2232 |
startAngle: 0 |
| 2233 |
} |
| 2234 |
} |
| 2235 |
}; |
| 2236 |
|
| 2237 |
class PieController extends DoughnutController { |
| 2238 |
} |
| 2239 |
PieController.id = 'pie'; |
| 2240 |
PieController.defaults = { |
| 2241 |
cutout: 0, |
| 2242 |
rotation: 0, |
| 2243 |
circumference: 360, |
| 2244 |
radius: '100%' |
| 2245 |
}; |
| 2246 |
|
| 2247 |
class RadarController extends DatasetController { |
| 2248 |
getLabelAndValue(index) { |
| 2249 |
const me = this; |
| 2250 |
const vScale = me._cachedMeta.vScale; |
| 2251 |
const parsed = me.getParsed(index); |
| 2252 |
return { |
| 2253 |
label: vScale.getLabels()[index], |
| 2254 |
value: '' + vScale.getLabelForValue(parsed[vScale.axis]) |
| 2255 |
}; |
| 2256 |
} |
| 2257 |
update(mode) { |
| 2258 |
const me = this; |
| 2259 |
const meta = me._cachedMeta; |
| 2260 |
const line = meta.dataset; |
| 2261 |
const points = meta.data || []; |
| 2262 |
const labels = meta.iScale.getLabels(); |
| 2263 |
line.points = points; |
| 2264 |
if (mode !== 'resize') { |
| 2265 |
const options = me.resolveDatasetElementOptions(mode); |
| 2266 |
if (!me.options.showLine) { |
| 2267 |
options.borderWidth = 0; |
| 2268 |
} |
| 2269 |
const properties = { |
| 2270 |
_loop: true, |
| 2271 |
_fullLoop: labels.length === points.length, |
| 2272 |
options |
| 2273 |
}; |
| 2274 |
me.updateElement(line, undefined, properties, mode); |
| 2275 |
} |
| 2276 |
me.updateElements(points, 0, points.length, mode); |
| 2277 |
} |
| 2278 |
updateElements(points, start, count, mode) { |
| 2279 |
const me = this; |
| 2280 |
const dataset = me.getDataset(); |
| 2281 |
const scale = me._cachedMeta.rScale; |
| 2282 |
const reset = mode === 'reset'; |
| 2283 |
for (let i = start; i < start + count; i++) { |
| 2284 |
const point = points[i]; |
| 2285 |
const options = me.resolveDataElementOptions(i, mode); |
| 2286 |
const pointPosition = scale.getPointPositionForValue(i, dataset.data[i]); |
| 2287 |
const x = reset ? scale.xCenter : pointPosition.x; |
| 2288 |
const y = reset ? scale.yCenter : pointPosition.y; |
| 2289 |
const properties = { |
| 2290 |
x, |
| 2291 |
y, |
| 2292 |
angle: pointPosition.angle, |
| 2293 |
skip: isNaN(x) || isNaN(y), |
| 2294 |
options |
| 2295 |
}; |
| 2296 |
me.updateElement(point, i, properties, mode); |
| 2297 |
} |
| 2298 |
} |
| 2299 |
} |
| 2300 |
RadarController.id = 'radar'; |
| 2301 |
RadarController.defaults = { |
| 2302 |
datasetElementType: 'line', |
| 2303 |
dataElementType: 'point', |
| 2304 |
indexAxis: 'r', |
| 2305 |
showLine: true, |
| 2306 |
elements: { |
| 2307 |
line: { |
| 2308 |
fill: 'start' |
| 2309 |
} |
| 2310 |
}, |
| 2311 |
}; |
| 2312 |
RadarController.overrides = { |
| 2313 |
aspectRatio: 1, |
| 2314 |
scales: { |
| 2315 |
r: { |
| 2316 |
type: 'radialLinear', |
| 2317 |
} |
| 2318 |
} |
| 2319 |
}; |
| 2320 |
|
| 2321 |
class ScatterController extends LineController { |
| 2322 |
} |
| 2323 |
ScatterController.id = 'scatter'; |
| 2324 |
ScatterController.defaults = { |
| 2325 |
showLine: false, |
| 2326 |
fill: false |
| 2327 |
}; |
| 2328 |
ScatterController.overrides = { |
| 2329 |
interaction: { |
| 2330 |
mode: 'point' |
| 2331 |
}, |
| 2332 |
plugins: { |
| 2333 |
tooltip: { |
| 2334 |
callbacks: { |
| 2335 |
title() { |
| 2336 |
return ''; |
| 2337 |
}, |
| 2338 |
label(item) { |
| 2339 |
return '(' + item.label + ', ' + item.formattedValue + ')'; |
| 2340 |
} |
| 2341 |
} |
| 2342 |
} |
| 2343 |
}, |
| 2344 |
scales: { |
| 2345 |
x: { |
| 2346 |
type: 'linear' |
| 2347 |
}, |
| 2348 |
y: { |
| 2349 |
type: 'linear' |
| 2350 |
} |
| 2351 |
} |
| 2352 |
}; |
| 2353 |
|
| 2354 |
var controllers = /*#__PURE__*/Object.freeze({ |
| 2355 |
__proto__: null, |
| 2356 |
BarController: BarController, |
| 2357 |
BubbleController: BubbleController, |
| 2358 |
DoughnutController: DoughnutController, |
| 2359 |
LineController: LineController, |
| 2360 |
PolarAreaController: PolarAreaController, |
| 2361 |
PieController: PieController, |
| 2362 |
RadarController: RadarController, |
| 2363 |
ScatterController: ScatterController |
| 2364 |
}); |
| 2365 |
|
| 2366 |
function abstract() { |
| 2367 |
throw new Error('This method is not implemented: either no adapter can be found or an incomplete integration was provided.'); |
| 2368 |
} |
| 2369 |
class DateAdapter { |
| 2370 |
constructor(options) { |
| 2371 |
this.options = options || {}; |
| 2372 |
} |
| 2373 |
formats() { |
| 2374 |
return abstract(); |
| 2375 |
} |
| 2376 |
parse(value, format) { |
| 2377 |
return abstract(); |
| 2378 |
} |
| 2379 |
format(timestamp, format) { |
| 2380 |
return abstract(); |
| 2381 |
} |
| 2382 |
add(timestamp, amount, unit) { |
| 2383 |
return abstract(); |
| 2384 |
} |
| 2385 |
diff(a, b, unit) { |
| 2386 |
return abstract(); |
| 2387 |
} |
| 2388 |
startOf(timestamp, unit, weekday) { |
| 2389 |
return abstract(); |
| 2390 |
} |
| 2391 |
endOf(timestamp, unit) { |
| 2392 |
return abstract(); |
| 2393 |
} |
| 2394 |
} |
| 2395 |
DateAdapter.override = function(members) { |
| 2396 |
Object.assign(DateAdapter.prototype, members); |
| 2397 |
}; |
| 2398 |
var adapters = { |
| 2399 |
_date: DateAdapter |
| 2400 |
}; |
| 2401 |
|
| 2402 |
function getRelativePosition(e, chart) { |
| 2403 |
if ('native' in e) { |
| 2404 |
return { |
| 2405 |
x: e.x, |
| 2406 |
y: e.y |
| 2407 |
}; |
| 2408 |
} |
| 2409 |
return getRelativePosition$1(e, chart); |
| 2410 |
} |
| 2411 |
function evaluateAllVisibleItems(chart, handler) { |
| 2412 |
const metasets = chart.getSortedVisibleDatasetMetas(); |
| 2413 |
let index, data, element; |
| 2414 |
for (let i = 0, ilen = metasets.length; i < ilen; ++i) { |
| 2415 |
({index, data} = metasets[i]); |
| 2416 |
for (let j = 0, jlen = data.length; j < jlen; ++j) { |
| 2417 |
element = data[j]; |
| 2418 |
if (!element.skip) { |
| 2419 |
handler(element, index, j); |
| 2420 |
} |
| 2421 |
} |
| 2422 |
} |
| 2423 |
} |
| 2424 |
function binarySearch(metaset, axis, value, intersect) { |
| 2425 |
const {controller, data, _sorted} = metaset; |
| 2426 |
const iScale = controller._cachedMeta.iScale; |
| 2427 |
if (iScale && axis === iScale.axis && _sorted && data.length) { |
| 2428 |
const lookupMethod = iScale._reversePixels ? _rlookupByKey : _lookupByKey; |
| 2429 |
if (!intersect) { |
| 2430 |
return lookupMethod(data, axis, value); |
| 2431 |
} else if (controller._sharedOptions) { |
| 2432 |
const el = data[0]; |
| 2433 |
const range = typeof el.getRange === 'function' && el.getRange(axis); |
| 2434 |
if (range) { |
| 2435 |
const start = lookupMethod(data, axis, value - range); |
| 2436 |
const end = lookupMethod(data, axis, value + range); |
| 2437 |
return {lo: start.lo, hi: end.hi}; |
| 2438 |
} |
| 2439 |
} |
| 2440 |
} |
| 2441 |
return {lo: 0, hi: data.length - 1}; |
| 2442 |
} |
| 2443 |
function optimizedEvaluateItems(chart, axis, position, handler, intersect) { |
| 2444 |
const metasets = chart.getSortedVisibleDatasetMetas(); |
| 2445 |
const value = position[axis]; |
| 2446 |
for (let i = 0, ilen = metasets.length; i < ilen; ++i) { |
| 2447 |
const {index, data} = metasets[i]; |
| 2448 |
const {lo, hi} = binarySearch(metasets[i], axis, value, intersect); |
| 2449 |
for (let j = lo; j <= hi; ++j) { |
| 2450 |
const element = data[j]; |
| 2451 |
if (!element.skip) { |
| 2452 |
handler(element, index, j); |
| 2453 |
} |
| 2454 |
} |
| 2455 |
} |
| 2456 |
} |
| 2457 |
function getDistanceMetricForAxis(axis) { |
| 2458 |
const useX = axis.indexOf('x') !== -1; |
| 2459 |
const useY = axis.indexOf('y') !== -1; |
| 2460 |
return function(pt1, pt2) { |
| 2461 |
const deltaX = useX ? Math.abs(pt1.x - pt2.x) : 0; |
| 2462 |
const deltaY = useY ? Math.abs(pt1.y - pt2.y) : 0; |
| 2463 |
return Math.sqrt(Math.pow(deltaX, 2) + Math.pow(deltaY, 2)); |
| 2464 |
}; |
| 2465 |
} |
| 2466 |
function getIntersectItems(chart, position, axis, useFinalPosition) { |
| 2467 |
const items = []; |
| 2468 |
if (!_isPointInArea(position, chart.chartArea, chart._minPadding)) { |
| 2469 |
return items; |
| 2470 |
} |
| 2471 |
const evaluationFunc = function(element, datasetIndex, index) { |
| 2472 |
if (element.inRange(position.x, position.y, useFinalPosition)) { |
| 2473 |
items.push({element, datasetIndex, index}); |
| 2474 |
} |
| 2475 |
}; |
| 2476 |
optimizedEvaluateItems(chart, axis, position, evaluationFunc, true); |
| 2477 |
return items; |
| 2478 |
} |
| 2479 |
function getNearestItems(chart, position, axis, intersect, useFinalPosition) { |
| 2480 |
const distanceMetric = getDistanceMetricForAxis(axis); |
| 2481 |
let minDistance = Number.POSITIVE_INFINITY; |
| 2482 |
let items = []; |
| 2483 |
if (!_isPointInArea(position, chart.chartArea, chart._minPadding)) { |
| 2484 |
return items; |
| 2485 |
} |
| 2486 |
const evaluationFunc = function(element, datasetIndex, index) { |
| 2487 |
if (intersect && !element.inRange(position.x, position.y, useFinalPosition)) { |
| 2488 |
return; |
| 2489 |
} |
| 2490 |
const center = element.getCenterPoint(useFinalPosition); |
| 2491 |
const distance = distanceMetric(position, center); |
| 2492 |
if (distance < minDistance) { |
| 2493 |
items = [{element, datasetIndex, index}]; |
| 2494 |
minDistance = distance; |
| 2495 |
} else if (distance === minDistance) { |
| 2496 |
items.push({element, datasetIndex, index}); |
| 2497 |
} |
| 2498 |
}; |
| 2499 |
optimizedEvaluateItems(chart, axis, position, evaluationFunc); |
| 2500 |
return items; |
| 2501 |
} |
| 2502 |
function getAxisItems(chart, e, options, useFinalPosition) { |
| 2503 |
const position = getRelativePosition(e, chart); |
| 2504 |
const items = []; |
| 2505 |
const axis = options.axis; |
| 2506 |
const rangeMethod = axis === 'x' ? 'inXRange' : 'inYRange'; |
| 2507 |
let intersectsItem = false; |
| 2508 |
evaluateAllVisibleItems(chart, (element, datasetIndex, index) => { |
| 2509 |
if (element[rangeMethod](position[axis], useFinalPosition)) { |
| 2510 |
items.push({element, datasetIndex, index}); |
| 2511 |
} |
| 2512 |
if (element.inRange(position.x, position.y, useFinalPosition)) { |
| 2513 |
intersectsItem = true; |
| 2514 |
} |
| 2515 |
}); |
| 2516 |
if (options.intersect && !intersectsItem) { |
| 2517 |
return []; |
| 2518 |
} |
| 2519 |
return items; |
| 2520 |
} |
| 2521 |
var Interaction = { |
| 2522 |
modes: { |
| 2523 |
index(chart, e, options, useFinalPosition) { |
| 2524 |
const position = getRelativePosition(e, chart); |
| 2525 |
const axis = options.axis || 'x'; |
| 2526 |
const items = options.intersect |
| 2527 |
? getIntersectItems(chart, position, axis, useFinalPosition) |
| 2528 |
: getNearestItems(chart, position, axis, false, useFinalPosition); |
| 2529 |
const elements = []; |
| 2530 |
if (!items.length) { |
| 2531 |
return []; |
| 2532 |
} |
| 2533 |
chart.getSortedVisibleDatasetMetas().forEach((meta) => { |
| 2534 |
const index = items[0].index; |
| 2535 |
const element = meta.data[index]; |
| 2536 |
if (element && !element.skip) { |
| 2537 |
elements.push({element, datasetIndex: meta.index, index}); |
| 2538 |
} |
| 2539 |
}); |
| 2540 |
return elements; |
| 2541 |
}, |
| 2542 |
dataset(chart, e, options, useFinalPosition) { |
| 2543 |
const position = getRelativePosition(e, chart); |
| 2544 |
const axis = options.axis || 'xy'; |
| 2545 |
let items = options.intersect |
| 2546 |
? getIntersectItems(chart, position, axis, useFinalPosition) : |
| 2547 |
getNearestItems(chart, position, axis, false, useFinalPosition); |
| 2548 |
if (items.length > 0) { |
| 2549 |
const datasetIndex = items[0].datasetIndex; |
| 2550 |
const data = chart.getDatasetMeta(datasetIndex).data; |
| 2551 |
items = []; |
| 2552 |
for (let i = 0; i < data.length; ++i) { |
| 2553 |
items.push({element: data[i], datasetIndex, index: i}); |
| 2554 |
} |
| 2555 |
} |
| 2556 |
return items; |
| 2557 |
}, |
| 2558 |
point(chart, e, options, useFinalPosition) { |
| 2559 |
const position = getRelativePosition(e, chart); |
| 2560 |
const axis = options.axis || 'xy'; |
| 2561 |
return getIntersectItems(chart, position, axis, useFinalPosition); |
| 2562 |
}, |
| 2563 |
nearest(chart, e, options, useFinalPosition) { |
| 2564 |
const position = getRelativePosition(e, chart); |
| 2565 |
const axis = options.axis || 'xy'; |
| 2566 |
return getNearestItems(chart, position, axis, options.intersect, useFinalPosition); |
| 2567 |
}, |
| 2568 |
x(chart, e, options, useFinalPosition) { |
| 2569 |
options.axis = 'x'; |
| 2570 |
return getAxisItems(chart, e, options, useFinalPosition); |
| 2571 |
}, |
| 2572 |
y(chart, e, options, useFinalPosition) { |
| 2573 |
options.axis = 'y'; |
| 2574 |
return getAxisItems(chart, e, options, useFinalPosition); |
| 2575 |
} |
| 2576 |
} |
| 2577 |
}; |
| 2578 |
|
| 2579 |
const STATIC_POSITIONS = ['left', 'top', 'right', 'bottom']; |
| 2580 |
function filterByPosition(array, position) { |
| 2581 |
return array.filter(v => v.pos === position); |
| 2582 |
} |
| 2583 |
function filterDynamicPositionByAxis(array, axis) { |
| 2584 |
return array.filter(v => STATIC_POSITIONS.indexOf(v.pos) === -1 && v.box.axis === axis); |
| 2585 |
} |
| 2586 |
function sortByWeight(array, reverse) { |
| 2587 |
return array.sort((a, b) => { |
| 2588 |
const v0 = reverse ? b : a; |
| 2589 |
const v1 = reverse ? a : b; |
| 2590 |
return v0.weight === v1.weight ? |
| 2591 |
v0.index - v1.index : |
| 2592 |
v0.weight - v1.weight; |
| 2593 |
}); |
| 2594 |
} |
| 2595 |
function wrapBoxes(boxes) { |
| 2596 |
const layoutBoxes = []; |
| 2597 |
let i, ilen, box; |
| 2598 |
for (i = 0, ilen = (boxes || []).length; i < ilen; ++i) { |
| 2599 |
box = boxes[i]; |
| 2600 |
layoutBoxes.push({ |
| 2601 |
index: i, |
| 2602 |
box, |
| 2603 |
pos: box.position, |
| 2604 |
horizontal: box.isHorizontal(), |
| 2605 |
weight: box.weight |
| 2606 |
}); |
| 2607 |
} |
| 2608 |
return layoutBoxes; |
| 2609 |
} |
| 2610 |
function setLayoutDims(layouts, params) { |
| 2611 |
let i, ilen, layout; |
| 2612 |
for (i = 0, ilen = layouts.length; i < ilen; ++i) { |
| 2613 |
layout = layouts[i]; |
| 2614 |
if (layout.horizontal) { |
| 2615 |
layout.width = layout.box.fullSize && params.availableWidth; |
| 2616 |
layout.height = params.hBoxMaxHeight; |
| 2617 |
} else { |
| 2618 |
layout.width = params.vBoxMaxWidth; |
| 2619 |
layout.height = layout.box.fullSize && params.availableHeight; |
| 2620 |
} |
| 2621 |
} |
| 2622 |
} |
| 2623 |
function buildLayoutBoxes(boxes) { |
| 2624 |
const layoutBoxes = wrapBoxes(boxes); |
| 2625 |
const fullSize = sortByWeight(layoutBoxes.filter(wrap => wrap.box.fullSize), true); |
| 2626 |
const left = sortByWeight(filterByPosition(layoutBoxes, 'left'), true); |
| 2627 |
const right = sortByWeight(filterByPosition(layoutBoxes, 'right')); |
| 2628 |
const top = sortByWeight(filterByPosition(layoutBoxes, 'top'), true); |
| 2629 |
const bottom = sortByWeight(filterByPosition(layoutBoxes, 'bottom')); |
| 2630 |
const centerHorizontal = filterDynamicPositionByAxis(layoutBoxes, 'x'); |
| 2631 |
const centerVertical = filterDynamicPositionByAxis(layoutBoxes, 'y'); |
| 2632 |
return { |
| 2633 |
fullSize, |
| 2634 |
leftAndTop: left.concat(top), |
| 2635 |
rightAndBottom: right.concat(centerVertical).concat(bottom).concat(centerHorizontal), |
| 2636 |
chartArea: filterByPosition(layoutBoxes, 'chartArea'), |
| 2637 |
vertical: left.concat(right).concat(centerVertical), |
| 2638 |
horizontal: top.concat(bottom).concat(centerHorizontal) |
| 2639 |
}; |
| 2640 |
} |
| 2641 |
function getCombinedMax(maxPadding, chartArea, a, b) { |
| 2642 |
return Math.max(maxPadding[a], chartArea[a]) + Math.max(maxPadding[b], chartArea[b]); |
| 2643 |
} |
| 2644 |
function updateMaxPadding(maxPadding, boxPadding) { |
| 2645 |
maxPadding.top = Math.max(maxPadding.top, boxPadding.top); |
| 2646 |
maxPadding.left = Math.max(maxPadding.left, boxPadding.left); |
| 2647 |
maxPadding.bottom = Math.max(maxPadding.bottom, boxPadding.bottom); |
| 2648 |
maxPadding.right = Math.max(maxPadding.right, boxPadding.right); |
| 2649 |
} |
| 2650 |
function updateDims(chartArea, params, layout) { |
| 2651 |
const box = layout.box; |
| 2652 |
const maxPadding = chartArea.maxPadding; |
| 2653 |
if (!isObject(layout.pos)) { |
| 2654 |
if (layout.size) { |
| 2655 |
chartArea[layout.pos] -= layout.size; |
| 2656 |
} |
| 2657 |
layout.size = layout.horizontal ? box.height : box.width; |
| 2658 |
chartArea[layout.pos] += layout.size; |
| 2659 |
} |
| 2660 |
if (box.getPadding) { |
| 2661 |
updateMaxPadding(maxPadding, box.getPadding()); |
| 2662 |
} |
| 2663 |
const newWidth = Math.max(0, params.outerWidth - getCombinedMax(maxPadding, chartArea, 'left', 'right')); |
| 2664 |
const newHeight = Math.max(0, params.outerHeight - getCombinedMax(maxPadding, chartArea, 'top', 'bottom')); |
| 2665 |
const widthChanged = newWidth !== chartArea.w; |
| 2666 |
const heightChanged = newHeight !== chartArea.h; |
| 2667 |
chartArea.w = newWidth; |
| 2668 |
chartArea.h = newHeight; |
| 2669 |
return layout.horizontal |
| 2670 |
? {same: widthChanged, other: heightChanged} |
| 2671 |
: {same: heightChanged, other: widthChanged}; |
| 2672 |
} |
| 2673 |
function handleMaxPadding(chartArea) { |
| 2674 |
const maxPadding = chartArea.maxPadding; |
| 2675 |
function updatePos(pos) { |
| 2676 |
const change = Math.max(maxPadding[pos] - chartArea[pos], 0); |
| 2677 |
chartArea[pos] += change; |
| 2678 |
return change; |
| 2679 |
} |
| 2680 |
chartArea.y += updatePos('top'); |
| 2681 |
chartArea.x += updatePos('left'); |
| 2682 |
updatePos('right'); |
| 2683 |
updatePos('bottom'); |
| 2684 |
} |
| 2685 |
function getMargins(horizontal, chartArea) { |
| 2686 |
const maxPadding = chartArea.maxPadding; |
| 2687 |
function marginForPositions(positions) { |
| 2688 |
const margin = {left: 0, top: 0, right: 0, bottom: 0}; |
| 2689 |
positions.forEach((pos) => { |
| 2690 |
margin[pos] = Math.max(chartArea[pos], maxPadding[pos]); |
| 2691 |
}); |
| 2692 |
return margin; |
| 2693 |
} |
| 2694 |
return horizontal |
| 2695 |
? marginForPositions(['left', 'right']) |
| 2696 |
: marginForPositions(['top', 'bottom']); |
| 2697 |
} |
| 2698 |
function fitBoxes(boxes, chartArea, params) { |
| 2699 |
const refitBoxes = []; |
| 2700 |
let i, ilen, layout, box, refit, changed; |
| 2701 |
for (i = 0, ilen = boxes.length, refit = 0; i < ilen; ++i) { |
| 2702 |
layout = boxes[i]; |
| 2703 |
box = layout.box; |
| 2704 |
box.update( |
| 2705 |
layout.width || chartArea.w, |
| 2706 |
layout.height || chartArea.h, |
| 2707 |
getMargins(layout.horizontal, chartArea) |
| 2708 |
); |
| 2709 |
const {same, other} = updateDims(chartArea, params, layout); |
| 2710 |
refit |= same && refitBoxes.length; |
| 2711 |
changed = changed || other; |
| 2712 |
if (!box.fullSize) { |
| 2713 |
refitBoxes.push(layout); |
| 2714 |
} |
| 2715 |
} |
| 2716 |
return refit && fitBoxes(refitBoxes, chartArea, params) || changed; |
| 2717 |
} |
| 2718 |
function placeBoxes(boxes, chartArea, params) { |
| 2719 |
const userPadding = params.padding; |
| 2720 |
let x = chartArea.x; |
| 2721 |
let y = chartArea.y; |
| 2722 |
let i, ilen, layout, box; |
| 2723 |
for (i = 0, ilen = boxes.length; i < ilen; ++i) { |
| 2724 |
layout = boxes[i]; |
| 2725 |
box = layout.box; |
| 2726 |
if (layout.horizontal) { |
| 2727 |
box.left = box.fullSize ? userPadding.left : chartArea.left; |
| 2728 |
box.right = box.fullSize ? params.outerWidth - userPadding.right : chartArea.left + chartArea.w; |
| 2729 |
box.top = y; |
| 2730 |
box.bottom = y + box.height; |
| 2731 |
box.width = box.right - box.left; |
| 2732 |
y = box.bottom; |
| 2733 |
} else { |
| 2734 |
box.left = x; |
| 2735 |
box.right = x + box.width; |
| 2736 |
box.top = box.fullSize ? userPadding.top : chartArea.top; |
| 2737 |
box.bottom = box.fullSize ? params.outerHeight - userPadding.right : chartArea.top + chartArea.h; |
| 2738 |
box.height = box.bottom - box.top; |
| 2739 |
x = box.right; |
| 2740 |
} |
| 2741 |
} |
| 2742 |
chartArea.x = x; |
| 2743 |
chartArea.y = y; |
| 2744 |
} |
| 2745 |
defaults.set('layout', { |
| 2746 |
padding: { |
| 2747 |
top: 0, |
| 2748 |
right: 0, |
| 2749 |
bottom: 0, |
| 2750 |
left: 0 |
| 2751 |
} |
| 2752 |
}); |
| 2753 |
var layouts = { |
| 2754 |
addBox(chart, item) { |
| 2755 |
if (!chart.boxes) { |
| 2756 |
chart.boxes = []; |
| 2757 |
} |
| 2758 |
item.fullSize = item.fullSize || false; |
| 2759 |
item.position = item.position || 'top'; |
| 2760 |
item.weight = item.weight || 0; |
| 2761 |
item._layers = item._layers || function() { |
| 2762 |
return [{ |
| 2763 |
z: 0, |
| 2764 |
draw(chartArea) { |
| 2765 |
item.draw(chartArea); |
| 2766 |
} |
| 2767 |
}]; |
| 2768 |
}; |
| 2769 |
chart.boxes.push(item); |
| 2770 |
}, |
| 2771 |
removeBox(chart, layoutItem) { |
| 2772 |
const index = chart.boxes ? chart.boxes.indexOf(layoutItem) : -1; |
| 2773 |
if (index !== -1) { |
| 2774 |
chart.boxes.splice(index, 1); |
| 2775 |
} |
| 2776 |
}, |
| 2777 |
configure(chart, item, options) { |
| 2778 |
item.fullSize = options.fullSize; |
| 2779 |
item.position = options.position; |
| 2780 |
item.weight = options.weight; |
| 2781 |
}, |
| 2782 |
update(chart, width, height, minPadding) { |
| 2783 |
if (!chart) { |
| 2784 |
return; |
| 2785 |
} |
| 2786 |
const padding = toPadding(chart.options.layout.padding); |
| 2787 |
const availableWidth = width - padding.width; |
| 2788 |
const availableHeight = height - padding.height; |
| 2789 |
const boxes = buildLayoutBoxes(chart.boxes); |
| 2790 |
const verticalBoxes = boxes.vertical; |
| 2791 |
const horizontalBoxes = boxes.horizontal; |
| 2792 |
each(chart.boxes, box => { |
| 2793 |
if (typeof box.beforeLayout === 'function') { |
| 2794 |
box.beforeLayout(); |
| 2795 |
} |
| 2796 |
}); |
| 2797 |
const visibleVerticalBoxCount = verticalBoxes.reduce((total, wrap) => |
| 2798 |
wrap.box.options && wrap.box.options.display === false ? total : total + 1, 0) || 1; |
| 2799 |
const params = Object.freeze({ |
| 2800 |
outerWidth: width, |
| 2801 |
outerHeight: height, |
| 2802 |
padding, |
| 2803 |
availableWidth, |
| 2804 |
availableHeight, |
| 2805 |
vBoxMaxWidth: availableWidth / 2 / visibleVerticalBoxCount, |
| 2806 |
hBoxMaxHeight: availableHeight / 2 |
| 2807 |
}); |
| 2808 |
const maxPadding = Object.assign({}, padding); |
| 2809 |
updateMaxPadding(maxPadding, toPadding(minPadding)); |
| 2810 |
const chartArea = Object.assign({ |
| 2811 |
maxPadding, |
| 2812 |
w: availableWidth, |
| 2813 |
h: availableHeight, |
| 2814 |
x: padding.left, |
| 2815 |
y: padding.top |
| 2816 |
}, padding); |
| 2817 |
setLayoutDims(verticalBoxes.concat(horizontalBoxes), params); |
| 2818 |
fitBoxes(boxes.fullSize, chartArea, params); |
| 2819 |
fitBoxes(verticalBoxes, chartArea, params); |
| 2820 |
if (fitBoxes(horizontalBoxes, chartArea, params)) { |
| 2821 |
fitBoxes(verticalBoxes, chartArea, params); |
| 2822 |
} |
| 2823 |
handleMaxPadding(chartArea); |
| 2824 |
placeBoxes(boxes.leftAndTop, chartArea, params); |
| 2825 |
chartArea.x += chartArea.w; |
| 2826 |
chartArea.y += chartArea.h; |
| 2827 |
placeBoxes(boxes.rightAndBottom, chartArea, params); |
| 2828 |
chart.chartArea = { |
| 2829 |
left: chartArea.left, |
| 2830 |
top: chartArea.top, |
| 2831 |
right: chartArea.left + chartArea.w, |
| 2832 |
bottom: chartArea.top + chartArea.h, |
| 2833 |
height: chartArea.h, |
| 2834 |
width: chartArea.w, |
| 2835 |
}; |
| 2836 |
each(boxes.chartArea, (layout) => { |
| 2837 |
const box = layout.box; |
| 2838 |
Object.assign(box, chart.chartArea); |
| 2839 |
box.update(chartArea.w, chartArea.h); |
| 2840 |
}); |
| 2841 |
} |
| 2842 |
}; |
| 2843 |
|
| 2844 |
class BasePlatform { |
| 2845 |
acquireContext(canvas, aspectRatio) {} |
| 2846 |
releaseContext(context) { |
| 2847 |
return false; |
| 2848 |
} |
| 2849 |
addEventListener(chart, type, listener) {} |
| 2850 |
removeEventListener(chart, type, listener) {} |
| 2851 |
getDevicePixelRatio() { |
| 2852 |
return 1; |
| 2853 |
} |
| 2854 |
getMaximumSize(element, width, height, aspectRatio) { |
| 2855 |
width = Math.max(0, width || element.width); |
| 2856 |
height = height || element.height; |
| 2857 |
return { |
| 2858 |
width, |
| 2859 |
height: Math.max(0, aspectRatio ? Math.floor(width / aspectRatio) : height) |
| 2860 |
}; |
| 2861 |
} |
| 2862 |
isAttached(canvas) { |
| 2863 |
return true; |
| 2864 |
} |
| 2865 |
} |
| 2866 |
|
| 2867 |
class BasicPlatform extends BasePlatform { |
| 2868 |
acquireContext(item) { |
| 2869 |
return item && item.getContext && item.getContext('2d') || null; |
| 2870 |
} |
| 2871 |
} |
| 2872 |
|
| 2873 |
const EXPANDO_KEY = '$chartjs'; |
| 2874 |
const EVENT_TYPES = { |
| 2875 |
touchstart: 'mousedown', |
| 2876 |
touchmove: 'mousemove', |
| 2877 |
touchend: 'mouseup', |
| 2878 |
pointerenter: 'mouseenter', |
| 2879 |
pointerdown: 'mousedown', |
| 2880 |
pointermove: 'mousemove', |
| 2881 |
pointerup: 'mouseup', |
| 2882 |
pointerleave: 'mouseout', |
| 2883 |
pointerout: 'mouseout' |
| 2884 |
}; |
| 2885 |
const isNullOrEmpty = value => value === null || value === ''; |
| 2886 |
function initCanvas(canvas, aspectRatio) { |
| 2887 |
const style = canvas.style; |
| 2888 |
const renderHeight = canvas.getAttribute('height'); |
| 2889 |
const renderWidth = canvas.getAttribute('width'); |
| 2890 |
canvas[EXPANDO_KEY] = { |
| 2891 |
initial: { |
| 2892 |
height: renderHeight, |
| 2893 |
width: renderWidth, |
| 2894 |
style: { |
| 2895 |
display: style.display, |
| 2896 |
height: style.height, |
| 2897 |
width: style.width |
| 2898 |
} |
| 2899 |
} |
| 2900 |
}; |
| 2901 |
style.display = style.display || 'block'; |
| 2902 |
style.boxSizing = style.boxSizing || 'border-box'; |
| 2903 |
if (isNullOrEmpty(renderWidth)) { |
| 2904 |
const displayWidth = readUsedSize(canvas, 'width'); |
| 2905 |
if (displayWidth !== undefined) { |
| 2906 |
canvas.width = displayWidth; |
| 2907 |
} |
| 2908 |
} |
| 2909 |
if (isNullOrEmpty(renderHeight)) { |
| 2910 |
if (canvas.style.height === '') { |
| 2911 |
canvas.height = canvas.width / (aspectRatio || 2); |
| 2912 |
} else { |
| 2913 |
const displayHeight = readUsedSize(canvas, 'height'); |
| 2914 |
if (displayHeight !== undefined) { |
| 2915 |
canvas.height = displayHeight; |
| 2916 |
} |
| 2917 |
} |
| 2918 |
} |
| 2919 |
return canvas; |
| 2920 |
} |
| 2921 |
const eventListenerOptions = supportsEventListenerOptions ? {passive: true} : false; |
| 2922 |
function addListener(node, type, listener) { |
| 2923 |
node.addEventListener(type, listener, eventListenerOptions); |
| 2924 |
} |
| 2925 |
function removeListener(chart, type, listener) { |
| 2926 |
chart.canvas.removeEventListener(type, listener, eventListenerOptions); |
| 2927 |
} |
| 2928 |
function fromNativeEvent(event, chart) { |
| 2929 |
const type = EVENT_TYPES[event.type] || event.type; |
| 2930 |
const {x, y} = getRelativePosition$1(event, chart); |
| 2931 |
return { |
| 2932 |
type, |
| 2933 |
chart, |
| 2934 |
native: event, |
| 2935 |
x: x !== undefined ? x : null, |
| 2936 |
y: y !== undefined ? y : null, |
| 2937 |
}; |
| 2938 |
} |
| 2939 |
function createAttachObserver(chart, type, listener) { |
| 2940 |
const canvas = chart.canvas; |
| 2941 |
const container = canvas && _getParentNode(canvas); |
| 2942 |
const element = container || canvas; |
| 2943 |
const observer = new MutationObserver(entries => { |
| 2944 |
const parent = _getParentNode(element); |
| 2945 |
entries.forEach(entry => { |
| 2946 |
for (let i = 0; i < entry.addedNodes.length; i++) { |
| 2947 |
const added = entry.addedNodes[i]; |
| 2948 |
if (added === element || added === parent) { |
| 2949 |
listener(entry.target); |
| 2950 |
} |
| 2951 |
} |
| 2952 |
}); |
| 2953 |
}); |
| 2954 |
observer.observe(document, {childList: true, subtree: true}); |
| 2955 |
return observer; |
| 2956 |
} |
| 2957 |
function createDetachObserver(chart, type, listener) { |
| 2958 |
const canvas = chart.canvas; |
| 2959 |
const container = canvas && _getParentNode(canvas); |
| 2960 |
if (!container) { |
| 2961 |
return; |
| 2962 |
} |
| 2963 |
const observer = new MutationObserver(entries => { |
| 2964 |
entries.forEach(entry => { |
| 2965 |
for (let i = 0; i < entry.removedNodes.length; i++) { |
| 2966 |
if (entry.removedNodes[i] === canvas) { |
| 2967 |
listener(); |
| 2968 |
break; |
| 2969 |
} |
| 2970 |
} |
| 2971 |
}); |
| 2972 |
}); |
| 2973 |
observer.observe(container, {childList: true}); |
| 2974 |
return observer; |
| 2975 |
} |
| 2976 |
const drpListeningCharts = new Map(); |
| 2977 |
let oldDevicePixelRatio = 0; |
| 2978 |
function onWindowResize() { |
| 2979 |
const dpr = window.devicePixelRatio; |
| 2980 |
if (dpr === oldDevicePixelRatio) { |
| 2981 |
return; |
| 2982 |
} |
| 2983 |
oldDevicePixelRatio = dpr; |
| 2984 |
drpListeningCharts.forEach((resize, chart) => { |
| 2985 |
if (chart.currentDevicePixelRatio !== dpr) { |
| 2986 |
resize(); |
| 2987 |
} |
| 2988 |
}); |
| 2989 |
} |
| 2990 |
function listenDevicePixelRatioChanges(chart, resize) { |
| 2991 |
if (!drpListeningCharts.size) { |
| 2992 |
window.addEventListener('resize', onWindowResize); |
| 2993 |
} |
| 2994 |
drpListeningCharts.set(chart, resize); |
| 2995 |
} |
| 2996 |
function unlistenDevicePixelRatioChanges(chart) { |
| 2997 |
drpListeningCharts.delete(chart); |
| 2998 |
if (!drpListeningCharts.size) { |
| 2999 |
window.removeEventListener('resize', onWindowResize); |
| 3000 |
} |
| 3001 |
} |
| 3002 |
function createResizeObserver(chart, type, listener) { |
| 3003 |
const canvas = chart.canvas; |
| 3004 |
const container = canvas && _getParentNode(canvas); |
| 3005 |
if (!container) { |
| 3006 |
return; |
| 3007 |
} |
| 3008 |
const resize = throttled((width, height) => { |
| 3009 |
const w = container.clientWidth; |
| 3010 |
listener(width, height); |
| 3011 |
if (w < container.clientWidth) { |
| 3012 |
listener(); |
| 3013 |
} |
| 3014 |
}, window); |
| 3015 |
const observer = new ResizeObserver(entries => { |
| 3016 |
const entry = entries[0]; |
| 3017 |
const width = entry.contentRect.width; |
| 3018 |
const height = entry.contentRect.height; |
| 3019 |
if (width === 0 && height === 0) { |
| 3020 |
return; |
| 3021 |
} |
| 3022 |
resize(width, height); |
| 3023 |
}); |
| 3024 |
observer.observe(container); |
| 3025 |
listenDevicePixelRatioChanges(chart, resize); |
| 3026 |
return observer; |
| 3027 |
} |
| 3028 |
function releaseObserver(chart, type, observer) { |
| 3029 |
if (observer) { |
| 3030 |
observer.disconnect(); |
| 3031 |
} |
| 3032 |
if (type === 'resize') { |
| 3033 |
unlistenDevicePixelRatioChanges(chart); |
| 3034 |
} |
| 3035 |
} |
| 3036 |
function createProxyAndListen(chart, type, listener) { |
| 3037 |
const canvas = chart.canvas; |
| 3038 |
const proxy = throttled((event) => { |
| 3039 |
if (chart.ctx !== null) { |
| 3040 |
listener(fromNativeEvent(event, chart)); |
| 3041 |
} |
| 3042 |
}, chart, (args) => { |
| 3043 |
const event = args[0]; |
| 3044 |
return [event, event.offsetX, event.offsetY]; |
| 3045 |
}); |
| 3046 |
addListener(canvas, type, proxy); |
| 3047 |
return proxy; |
| 3048 |
} |
| 3049 |
class DomPlatform extends BasePlatform { |
| 3050 |
acquireContext(canvas, aspectRatio) { |
| 3051 |
const context = canvas && canvas.getContext && canvas.getContext('2d'); |
| 3052 |
if (context && context.canvas === canvas) { |
| 3053 |
initCanvas(canvas, aspectRatio); |
| 3054 |
return context; |
| 3055 |
} |
| 3056 |
return null; |
| 3057 |
} |
| 3058 |
releaseContext(context) { |
| 3059 |
const canvas = context.canvas; |
| 3060 |
if (!canvas[EXPANDO_KEY]) { |
| 3061 |
return false; |
| 3062 |
} |
| 3063 |
const initial = canvas[EXPANDO_KEY].initial; |
| 3064 |
['height', 'width'].forEach((prop) => { |
| 3065 |
const value = initial[prop]; |
| 3066 |
if (isNullOrUndef(value)) { |
| 3067 |
canvas.removeAttribute(prop); |
| 3068 |
} else { |
| 3069 |
canvas.setAttribute(prop, value); |
| 3070 |
} |
| 3071 |
}); |
| 3072 |
const style = initial.style || {}; |
| 3073 |
Object.keys(style).forEach((key) => { |
| 3074 |
canvas.style[key] = style[key]; |
| 3075 |
}); |
| 3076 |
canvas.width = canvas.width; |
| 3077 |
delete canvas[EXPANDO_KEY]; |
| 3078 |
return true; |
| 3079 |
} |
| 3080 |
addEventListener(chart, type, listener) { |
| 3081 |
this.removeEventListener(chart, type); |
| 3082 |
const proxies = chart.$proxies || (chart.$proxies = {}); |
| 3083 |
const handlers = { |
| 3084 |
attach: createAttachObserver, |
| 3085 |
detach: createDetachObserver, |
| 3086 |
resize: createResizeObserver |
| 3087 |
}; |
| 3088 |
const handler = handlers[type] || createProxyAndListen; |
| 3089 |
proxies[type] = handler(chart, type, listener); |
| 3090 |
} |
| 3091 |
removeEventListener(chart, type) { |
| 3092 |
const proxies = chart.$proxies || (chart.$proxies = {}); |
| 3093 |
const proxy = proxies[type]; |
| 3094 |
if (!proxy) { |
| 3095 |
return; |
| 3096 |
} |
| 3097 |
const handlers = { |
| 3098 |
attach: releaseObserver, |
| 3099 |
detach: releaseObserver, |
| 3100 |
resize: releaseObserver |
| 3101 |
}; |
| 3102 |
const handler = handlers[type] || removeListener; |
| 3103 |
handler(chart, type, proxy); |
| 3104 |
proxies[type] = undefined; |
| 3105 |
} |
| 3106 |
getDevicePixelRatio() { |
| 3107 |
return window.devicePixelRatio; |
| 3108 |
} |
| 3109 |
getMaximumSize(canvas, width, height, aspectRatio) { |
| 3110 |
return getMaximumSize(canvas, width, height, aspectRatio); |
| 3111 |
} |
| 3112 |
isAttached(canvas) { |
| 3113 |
const container = _getParentNode(canvas); |
| 3114 |
return !!(container && _getParentNode(container)); |
| 3115 |
} |
| 3116 |
} |
| 3117 |
|
| 3118 |
class Element { |
| 3119 |
constructor() { |
| 3120 |
this.x = undefined; |
| 3121 |
this.y = undefined; |
| 3122 |
this.active = false; |
| 3123 |
this.options = undefined; |
| 3124 |
this.$animations = undefined; |
| 3125 |
} |
| 3126 |
tooltipPosition(useFinalPosition) { |
| 3127 |
const {x, y} = this.getProps(['x', 'y'], useFinalPosition); |
| 3128 |
return {x, y}; |
| 3129 |
} |
| 3130 |
hasValue() { |
| 3131 |
return isNumber(this.x) && isNumber(this.y); |
| 3132 |
} |
| 3133 |
getProps(props, final) { |
| 3134 |
const me = this; |
| 3135 |
const anims = this.$animations; |
| 3136 |
if (!final || !anims) { |
| 3137 |
return me; |
| 3138 |
} |
| 3139 |
const ret = {}; |
| 3140 |
props.forEach(prop => { |
| 3141 |
ret[prop] = anims[prop] && anims[prop].active() ? anims[prop]._to : me[prop]; |
| 3142 |
}); |
| 3143 |
return ret; |
| 3144 |
} |
| 3145 |
} |
| 3146 |
Element.defaults = {}; |
| 3147 |
Element.defaultRoutes = undefined; |
| 3148 |
|
| 3149 |
const formatters = { |
| 3150 |
values(value) { |
| 3151 |
return isArray(value) ? value : '' + value; |
| 3152 |
}, |
| 3153 |
numeric(tickValue, index, ticks) { |
| 3154 |
if (tickValue === 0) { |
| 3155 |
return '0'; |
| 3156 |
} |
| 3157 |
const locale = this.chart.options.locale; |
| 3158 |
let notation; |
| 3159 |
let delta = tickValue; |
| 3160 |
if (ticks.length > 1) { |
| 3161 |
const maxTick = Math.max(Math.abs(ticks[0].value), Math.abs(ticks[ticks.length - 1].value)); |
| 3162 |
if (maxTick < 1e-4 || maxTick > 1e+15) { |
| 3163 |
notation = 'scientific'; |
| 3164 |
} |
| 3165 |
delta = calculateDelta(tickValue, ticks); |
| 3166 |
} |
| 3167 |
const logDelta = log10(Math.abs(delta)); |
| 3168 |
const numDecimal = Math.max(Math.min(-1 * Math.floor(logDelta), 20), 0); |
| 3169 |
const options = {notation, minimumFractionDigits: numDecimal, maximumFractionDigits: numDecimal}; |
| 3170 |
Object.assign(options, this.options.ticks.format); |
| 3171 |
return formatNumber(tickValue, locale, options); |
| 3172 |
}, |
| 3173 |
logarithmic(tickValue, index, ticks) { |
| 3174 |
if (tickValue === 0) { |
| 3175 |
return '0'; |
| 3176 |
} |
| 3177 |
const remain = tickValue / (Math.pow(10, Math.floor(log10(tickValue)))); |
| 3178 |
if (remain === 1 || remain === 2 || remain === 5) { |
| 3179 |
return formatters.numeric.call(this, tickValue, index, ticks); |
| 3180 |
} |
| 3181 |
return ''; |
| 3182 |
} |
| 3183 |
}; |
| 3184 |
function calculateDelta(tickValue, ticks) { |
| 3185 |
let delta = ticks.length > 3 ? ticks[2].value - ticks[1].value : ticks[1].value - ticks[0].value; |
| 3186 |
if (Math.abs(delta) > 1 && tickValue !== Math.floor(tickValue)) { |
| 3187 |
delta = tickValue - Math.floor(tickValue); |
| 3188 |
} |
| 3189 |
return delta; |
| 3190 |
} |
| 3191 |
var Ticks = {formatters}; |
| 3192 |
|
| 3193 |
defaults.set('scale', { |
| 3194 |
display: true, |
| 3195 |
offset: false, |
| 3196 |
reverse: false, |
| 3197 |
beginAtZero: false, |
| 3198 |
bounds: 'ticks', |
| 3199 |
grace: 0, |
| 3200 |
grid: { |
| 3201 |
display: true, |
| 3202 |
lineWidth: 1, |
| 3203 |
drawBorder: true, |
| 3204 |
drawOnChartArea: true, |
| 3205 |
drawTicks: true, |
| 3206 |
tickLength: 8, |
| 3207 |
tickWidth: (_ctx, options) => options.lineWidth, |
| 3208 |
tickColor: (_ctx, options) => options.color, |
| 3209 |
offset: false, |
| 3210 |
borderDash: [], |
| 3211 |
borderDashOffset: 0.0, |
| 3212 |
borderWidth: 1 |
| 3213 |
}, |
| 3214 |
title: { |
| 3215 |
display: false, |
| 3216 |
text: '', |
| 3217 |
padding: { |
| 3218 |
top: 4, |
| 3219 |
bottom: 4 |
| 3220 |
} |
| 3221 |
}, |
| 3222 |
ticks: { |
| 3223 |
minRotation: 0, |
| 3224 |
maxRotation: 50, |
| 3225 |
mirror: false, |
| 3226 |
textStrokeWidth: 0, |
| 3227 |
textStrokeColor: '', |
| 3228 |
padding: 3, |
| 3229 |
display: true, |
| 3230 |
autoSkip: true, |
| 3231 |
autoSkipPadding: 3, |
| 3232 |
labelOffset: 0, |
| 3233 |
callback: Ticks.formatters.values, |
| 3234 |
minor: {}, |
| 3235 |
major: {}, |
| 3236 |
align: 'center', |
| 3237 |
crossAlign: 'near', |
| 3238 |
showLabelBackdrop: false, |
| 3239 |
backdropColor: 'rgba(255, 255, 255, 0.75)', |
| 3240 |
backdropPadding: 2, |
| 3241 |
} |
| 3242 |
}); |
| 3243 |
defaults.route('scale.ticks', 'color', '', 'color'); |
| 3244 |
defaults.route('scale.grid', 'color', '', 'borderColor'); |
| 3245 |
defaults.route('scale.grid', 'borderColor', '', 'borderColor'); |
| 3246 |
defaults.route('scale.title', 'color', '', 'color'); |
| 3247 |
defaults.describe('scale', { |
| 3248 |
_fallback: false, |
| 3249 |
_scriptable: (name) => !name.startsWith('before') && !name.startsWith('after') && name !== 'callback' && name !== 'parser', |
| 3250 |
_indexable: (name) => name !== 'borderDash' && name !== 'tickBorderDash', |
| 3251 |
}); |
| 3252 |
defaults.describe('scales', { |
| 3253 |
_fallback: 'scale', |
| 3254 |
}); |
| 3255 |
|
| 3256 |
function autoSkip(scale, ticks) { |
| 3257 |
const tickOpts = scale.options.ticks; |
| 3258 |
const ticksLimit = tickOpts.maxTicksLimit || determineMaxTicks(scale); |
| 3259 |
const majorIndices = tickOpts.major.enabled ? getMajorIndices(ticks) : []; |
| 3260 |
const numMajorIndices = majorIndices.length; |
| 3261 |
const first = majorIndices[0]; |
| 3262 |
const last = majorIndices[numMajorIndices - 1]; |
| 3263 |
const newTicks = []; |
| 3264 |
if (numMajorIndices > ticksLimit) { |
| 3265 |
skipMajors(ticks, newTicks, majorIndices, numMajorIndices / ticksLimit); |
| 3266 |
return newTicks; |
| 3267 |
} |
| 3268 |
const spacing = calculateSpacing(majorIndices, ticks, ticksLimit); |
| 3269 |
if (numMajorIndices > 0) { |
| 3270 |
let i, ilen; |
| 3271 |
const avgMajorSpacing = numMajorIndices > 1 ? Math.round((last - first) / (numMajorIndices - 1)) : null; |
| 3272 |
skip(ticks, newTicks, spacing, isNullOrUndef(avgMajorSpacing) ? 0 : first - avgMajorSpacing, first); |
| 3273 |
for (i = 0, ilen = numMajorIndices - 1; i < ilen; i++) { |
| 3274 |
skip(ticks, newTicks, spacing, majorIndices[i], majorIndices[i + 1]); |
| 3275 |
} |
| 3276 |
skip(ticks, newTicks, spacing, last, isNullOrUndef(avgMajorSpacing) ? ticks.length : last + avgMajorSpacing); |
| 3277 |
return newTicks; |
| 3278 |
} |
| 3279 |
skip(ticks, newTicks, spacing); |
| 3280 |
return newTicks; |
| 3281 |
} |
| 3282 |
function determineMaxTicks(scale) { |
| 3283 |
const offset = scale.options.offset; |
| 3284 |
const tickLength = scale._tickSize(); |
| 3285 |
const maxScale = scale._length / tickLength + (offset ? 0 : 1); |
| 3286 |
const maxChart = scale._maxLength / tickLength; |
| 3287 |
return Math.floor(Math.min(maxScale, maxChart)); |
| 3288 |
} |
| 3289 |
function calculateSpacing(majorIndices, ticks, ticksLimit) { |
| 3290 |
const evenMajorSpacing = getEvenSpacing(majorIndices); |
| 3291 |
const spacing = ticks.length / ticksLimit; |
| 3292 |
if (!evenMajorSpacing) { |
| 3293 |
return Math.max(spacing, 1); |
| 3294 |
} |
| 3295 |
const factors = _factorize(evenMajorSpacing); |
| 3296 |
for (let i = 0, ilen = factors.length - 1; i < ilen; i++) { |
| 3297 |
const factor = factors[i]; |
| 3298 |
if (factor > spacing) { |
| 3299 |
return factor; |
| 3300 |
} |
| 3301 |
} |
| 3302 |
return Math.max(spacing, 1); |
| 3303 |
} |
| 3304 |
function getMajorIndices(ticks) { |
| 3305 |
const result = []; |
| 3306 |
let i, ilen; |
| 3307 |
for (i = 0, ilen = ticks.length; i < ilen; i++) { |
| 3308 |
if (ticks[i].major) { |
| 3309 |
result.push(i); |
| 3310 |
} |
| 3311 |
} |
| 3312 |
return result; |
| 3313 |
} |
| 3314 |
function skipMajors(ticks, newTicks, majorIndices, spacing) { |
| 3315 |
let count = 0; |
| 3316 |
let next = majorIndices[0]; |
| 3317 |
let i; |
| 3318 |
spacing = Math.ceil(spacing); |
| 3319 |
for (i = 0; i < ticks.length; i++) { |
| 3320 |
if (i === next) { |
| 3321 |
newTicks.push(ticks[i]); |
| 3322 |
count++; |
| 3323 |
next = majorIndices[count * spacing]; |
| 3324 |
} |
| 3325 |
} |
| 3326 |
} |
| 3327 |
function skip(ticks, newTicks, spacing, majorStart, majorEnd) { |
| 3328 |
const start = valueOrDefault(majorStart, 0); |
| 3329 |
const end = Math.min(valueOrDefault(majorEnd, ticks.length), ticks.length); |
| 3330 |
let count = 0; |
| 3331 |
let length, i, next; |
| 3332 |
spacing = Math.ceil(spacing); |
| 3333 |
if (majorEnd) { |
| 3334 |
length = majorEnd - majorStart; |
| 3335 |
spacing = length / Math.floor(length / spacing); |
| 3336 |
} |
| 3337 |
next = start; |
| 3338 |
while (next < 0) { |
| 3339 |
count++; |
| 3340 |
next = Math.round(start + count * spacing); |
| 3341 |
} |
| 3342 |
for (i = Math.max(start, 0); i < end; i++) { |
| 3343 |
if (i === next) { |
| 3344 |
newTicks.push(ticks[i]); |
| 3345 |
count++; |
| 3346 |
next = Math.round(start + count * spacing); |
| 3347 |
} |
| 3348 |
} |
| 3349 |
} |
| 3350 |
function getEvenSpacing(arr) { |
| 3351 |
const len = arr.length; |
| 3352 |
let i, diff; |
| 3353 |
if (len < 2) { |
| 3354 |
return false; |
| 3355 |
} |
| 3356 |
for (diff = arr[0], i = 1; i < len; ++i) { |
| 3357 |
if (arr[i] - arr[i - 1] !== diff) { |
| 3358 |
return false; |
| 3359 |
} |
| 3360 |
} |
| 3361 |
return diff; |
| 3362 |
} |
| 3363 |
|
| 3364 |
const reverseAlign = (align) => align === 'left' ? 'right' : align === 'right' ? 'left' : align; |
| 3365 |
const offsetFromEdge = (scale, edge, offset) => edge === 'top' || edge === 'left' ? scale[edge] + offset : scale[edge] - offset; |
| 3366 |
function sample(arr, numItems) { |
| 3367 |
const result = []; |
| 3368 |
const increment = arr.length / numItems; |
| 3369 |
const len = arr.length; |
| 3370 |
let i = 0; |
| 3371 |
for (; i < len; i += increment) { |
| 3372 |
result.push(arr[Math.floor(i)]); |
| 3373 |
} |
| 3374 |
return result; |
| 3375 |
} |
| 3376 |
function getPixelForGridLine(scale, index, offsetGridLines) { |
| 3377 |
const length = scale.ticks.length; |
| 3378 |
const validIndex = Math.min(index, length - 1); |
| 3379 |
const start = scale._startPixel; |
| 3380 |
const end = scale._endPixel; |
| 3381 |
const epsilon = 1e-6; |
| 3382 |
let lineValue = scale.getPixelForTick(validIndex); |
| 3383 |
let offset; |
| 3384 |
if (offsetGridLines) { |
| 3385 |
if (length === 1) { |
| 3386 |
offset = Math.max(lineValue - start, end - lineValue); |
| 3387 |
} else if (index === 0) { |
| 3388 |
offset = (scale.getPixelForTick(1) - lineValue) / 2; |
| 3389 |
} else { |
| 3390 |
offset = (lineValue - scale.getPixelForTick(validIndex - 1)) / 2; |
| 3391 |
} |
| 3392 |
lineValue += validIndex < index ? offset : -offset; |
| 3393 |
if (lineValue < start - epsilon || lineValue > end + epsilon) { |
| 3394 |
return; |
| 3395 |
} |
| 3396 |
} |
| 3397 |
return lineValue; |
| 3398 |
} |
| 3399 |
function garbageCollect(caches, length) { |
| 3400 |
each(caches, (cache) => { |
| 3401 |
const gc = cache.gc; |
| 3402 |
const gcLen = gc.length / 2; |
| 3403 |
let i; |
| 3404 |
if (gcLen > length) { |
| 3405 |
for (i = 0; i < gcLen; ++i) { |
| 3406 |
delete cache.data[gc[i]]; |
| 3407 |
} |
| 3408 |
gc.splice(0, gcLen); |
| 3409 |
} |
| 3410 |
}); |
| 3411 |
} |
| 3412 |
function getTickMarkLength(options) { |
| 3413 |
return options.drawTicks ? options.tickLength : 0; |
| 3414 |
} |
| 3415 |
function getTitleHeight(options, fallback) { |
| 3416 |
if (!options.display) { |
| 3417 |
return 0; |
| 3418 |
} |
| 3419 |
const font = toFont(options.font, fallback); |
| 3420 |
const padding = toPadding(options.padding); |
| 3421 |
const lines = isArray(options.text) ? options.text.length : 1; |
| 3422 |
return (lines * font.lineHeight) + padding.height; |
| 3423 |
} |
| 3424 |
function createScaleContext(parent, scale) { |
| 3425 |
return Object.assign(Object.create(parent), { |
| 3426 |
scale, |
| 3427 |
type: 'scale' |
| 3428 |
}); |
| 3429 |
} |
| 3430 |
function createTickContext(parent, index, tick) { |
| 3431 |
return Object.assign(Object.create(parent), { |
| 3432 |
tick, |
| 3433 |
index, |
| 3434 |
type: 'tick' |
| 3435 |
}); |
| 3436 |
} |
| 3437 |
function titleAlign(align, position, reverse) { |
| 3438 |
let ret = _toLeftRightCenter(align); |
| 3439 |
if ((reverse && position !== 'right') || (!reverse && position === 'right')) { |
| 3440 |
ret = reverseAlign(ret); |
| 3441 |
} |
| 3442 |
return ret; |
| 3443 |
} |
| 3444 |
function titleArgs(scale, offset, position, align) { |
| 3445 |
const {top, left, bottom, right} = scale; |
| 3446 |
let rotation = 0; |
| 3447 |
let maxWidth, titleX, titleY; |
| 3448 |
if (scale.isHorizontal()) { |
| 3449 |
titleX = _alignStartEnd(align, left, right); |
| 3450 |
titleY = offsetFromEdge(scale, position, offset); |
| 3451 |
maxWidth = right - left; |
| 3452 |
} else { |
| 3453 |
titleX = offsetFromEdge(scale, position, offset); |
| 3454 |
titleY = _alignStartEnd(align, bottom, top); |
| 3455 |
rotation = position === 'left' ? -HALF_PI : HALF_PI; |
| 3456 |
} |
| 3457 |
return {titleX, titleY, maxWidth, rotation}; |
| 3458 |
} |
| 3459 |
class Scale extends Element { |
| 3460 |
constructor(cfg) { |
| 3461 |
super(); |
| 3462 |
this.id = cfg.id; |
| 3463 |
this.type = cfg.type; |
| 3464 |
this.options = undefined; |
| 3465 |
this.ctx = cfg.ctx; |
| 3466 |
this.chart = cfg.chart; |
| 3467 |
this.top = undefined; |
| 3468 |
this.bottom = undefined; |
| 3469 |
this.left = undefined; |
| 3470 |
this.right = undefined; |
| 3471 |
this.width = undefined; |
| 3472 |
this.height = undefined; |
| 3473 |
this._margins = { |
| 3474 |
left: 0, |
| 3475 |
right: 0, |
| 3476 |
top: 0, |
| 3477 |
bottom: 0 |
| 3478 |
}; |
| 3479 |
this.maxWidth = undefined; |
| 3480 |
this.maxHeight = undefined; |
| 3481 |
this.paddingTop = undefined; |
| 3482 |
this.paddingBottom = undefined; |
| 3483 |
this.paddingLeft = undefined; |
| 3484 |
this.paddingRight = undefined; |
| 3485 |
this.axis = undefined; |
| 3486 |
this.labelRotation = undefined; |
| 3487 |
this.min = undefined; |
| 3488 |
this.max = undefined; |
| 3489 |
this._range = undefined; |
| 3490 |
this.ticks = []; |
| 3491 |
this._gridLineItems = null; |
| 3492 |
this._labelItems = null; |
| 3493 |
this._labelSizes = null; |
| 3494 |
this._length = 0; |
| 3495 |
this._maxLength = 0; |
| 3496 |
this._longestTextCache = {}; |
| 3497 |
this._startPixel = undefined; |
| 3498 |
this._endPixel = undefined; |
| 3499 |
this._reversePixels = false; |
| 3500 |
this._userMax = undefined; |
| 3501 |
this._userMin = undefined; |
| 3502 |
this._suggestedMax = undefined; |
| 3503 |
this._suggestedMin = undefined; |
| 3504 |
this._ticksLength = 0; |
| 3505 |
this._borderValue = 0; |
| 3506 |
this._cache = {}; |
| 3507 |
this._dataLimitsCached = false; |
| 3508 |
this.$context = undefined; |
| 3509 |
} |
| 3510 |
init(options) { |
| 3511 |
const me = this; |
| 3512 |
me.options = options.setContext(me.getContext()); |
| 3513 |
me.axis = options.axis; |
| 3514 |
me._userMin = me.parse(options.min); |
| 3515 |
me._userMax = me.parse(options.max); |
| 3516 |
me._suggestedMin = me.parse(options.suggestedMin); |
| 3517 |
me._suggestedMax = me.parse(options.suggestedMax); |
| 3518 |
} |
| 3519 |
parse(raw, index) { |
| 3520 |
return raw; |
| 3521 |
} |
| 3522 |
getUserBounds() { |
| 3523 |
let {_userMin, _userMax, _suggestedMin, _suggestedMax} = this; |
| 3524 |
_userMin = finiteOrDefault(_userMin, Number.POSITIVE_INFINITY); |
| 3525 |
_userMax = finiteOrDefault(_userMax, Number.NEGATIVE_INFINITY); |
| 3526 |
_suggestedMin = finiteOrDefault(_suggestedMin, Number.POSITIVE_INFINITY); |
| 3527 |
_suggestedMax = finiteOrDefault(_suggestedMax, Number.NEGATIVE_INFINITY); |
| 3528 |
return { |
| 3529 |
min: finiteOrDefault(_userMin, _suggestedMin), |
| 3530 |
max: finiteOrDefault(_userMax, _suggestedMax), |
| 3531 |
minDefined: isNumberFinite(_userMin), |
| 3532 |
maxDefined: isNumberFinite(_userMax) |
| 3533 |
}; |
| 3534 |
} |
| 3535 |
getMinMax(canStack) { |
| 3536 |
const me = this; |
| 3537 |
let {min, max, minDefined, maxDefined} = me.getUserBounds(); |
| 3538 |
let range; |
| 3539 |
if (minDefined && maxDefined) { |
| 3540 |
return {min, max}; |
| 3541 |
} |
| 3542 |
const metas = me.getMatchingVisibleMetas(); |
| 3543 |
for (let i = 0, ilen = metas.length; i < ilen; ++i) { |
| 3544 |
range = metas[i].controller.getMinMax(me, canStack); |
| 3545 |
if (!minDefined) { |
| 3546 |
min = Math.min(min, range.min); |
| 3547 |
} |
| 3548 |
if (!maxDefined) { |
| 3549 |
max = Math.max(max, range.max); |
| 3550 |
} |
| 3551 |
} |
| 3552 |
return { |
| 3553 |
min: finiteOrDefault(min, finiteOrDefault(max, min)), |
| 3554 |
max: finiteOrDefault(max, finiteOrDefault(min, max)) |
| 3555 |
}; |
| 3556 |
} |
| 3557 |
getPadding() { |
| 3558 |
const me = this; |
| 3559 |
return { |
| 3560 |
left: me.paddingLeft || 0, |
| 3561 |
top: me.paddingTop || 0, |
| 3562 |
right: me.paddingRight || 0, |
| 3563 |
bottom: me.paddingBottom || 0 |
| 3564 |
}; |
| 3565 |
} |
| 3566 |
getTicks() { |
| 3567 |
return this.ticks; |
| 3568 |
} |
| 3569 |
getLabels() { |
| 3570 |
const data = this.chart.data; |
| 3571 |
return this.options.labels || (this.isHorizontal() ? data.xLabels : data.yLabels) || data.labels || []; |
| 3572 |
} |
| 3573 |
beforeLayout() { |
| 3574 |
this._cache = {}; |
| 3575 |
this._dataLimitsCached = false; |
| 3576 |
} |
| 3577 |
beforeUpdate() { |
| 3578 |
callback(this.options.beforeUpdate, [this]); |
| 3579 |
} |
| 3580 |
update(maxWidth, maxHeight, margins) { |
| 3581 |
const me = this; |
| 3582 |
const tickOpts = me.options.ticks; |
| 3583 |
const sampleSize = tickOpts.sampleSize; |
| 3584 |
me.beforeUpdate(); |
| 3585 |
me.maxWidth = maxWidth; |
| 3586 |
me.maxHeight = maxHeight; |
| 3587 |
me._margins = margins = Object.assign({ |
| 3588 |
left: 0, |
| 3589 |
right: 0, |
| 3590 |
top: 0, |
| 3591 |
bottom: 0 |
| 3592 |
}, margins); |
| 3593 |
me.ticks = null; |
| 3594 |
me._labelSizes = null; |
| 3595 |
me._gridLineItems = null; |
| 3596 |
me._labelItems = null; |
| 3597 |
me.beforeSetDimensions(); |
| 3598 |
me.setDimensions(); |
| 3599 |
me.afterSetDimensions(); |
| 3600 |
me._maxLength = me.isHorizontal() |
| 3601 |
? me.width + margins.left + margins.right |
| 3602 |
: me.height + margins.top + margins.bottom; |
| 3603 |
if (!me._dataLimitsCached) { |
| 3604 |
me.beforeDataLimits(); |
| 3605 |
me.determineDataLimits(); |
| 3606 |
me.afterDataLimits(); |
| 3607 |
me._range = _addGrace(me, me.options.grace); |
| 3608 |
me._dataLimitsCached = true; |
| 3609 |
} |
| 3610 |
me.beforeBuildTicks(); |
| 3611 |
me.ticks = me.buildTicks() || []; |
| 3612 |
me.afterBuildTicks(); |
| 3613 |
const samplingEnabled = sampleSize < me.ticks.length; |
| 3614 |
me._convertTicksToLabels(samplingEnabled ? sample(me.ticks, sampleSize) : me.ticks); |
| 3615 |
me.configure(); |
| 3616 |
me.beforeCalculateLabelRotation(); |
| 3617 |
me.calculateLabelRotation(); |
| 3618 |
me.afterCalculateLabelRotation(); |
| 3619 |
if (tickOpts.display && (tickOpts.autoSkip || tickOpts.source === 'auto')) { |
| 3620 |
me.ticks = autoSkip(me, me.ticks); |
| 3621 |
me._labelSizes = null; |
| 3622 |
} |
| 3623 |
if (samplingEnabled) { |
| 3624 |
me._convertTicksToLabels(me.ticks); |
| 3625 |
} |
| 3626 |
me.beforeFit(); |
| 3627 |
me.fit(); |
| 3628 |
me.afterFit(); |
| 3629 |
me.afterUpdate(); |
| 3630 |
} |
| 3631 |
configure() { |
| 3632 |
const me = this; |
| 3633 |
let reversePixels = me.options.reverse; |
| 3634 |
let startPixel, endPixel; |
| 3635 |
if (me.isHorizontal()) { |
| 3636 |
startPixel = me.left; |
| 3637 |
endPixel = me.right; |
| 3638 |
} else { |
| 3639 |
startPixel = me.top; |
| 3640 |
endPixel = me.bottom; |
| 3641 |
reversePixels = !reversePixels; |
| 3642 |
} |
| 3643 |
me._startPixel = startPixel; |
| 3644 |
me._endPixel = endPixel; |
| 3645 |
me._reversePixels = reversePixels; |
| 3646 |
me._length = endPixel - startPixel; |
| 3647 |
me._alignToPixels = me.options.alignToPixels; |
| 3648 |
} |
| 3649 |
afterUpdate() { |
| 3650 |
callback(this.options.afterUpdate, [this]); |
| 3651 |
} |
| 3652 |
beforeSetDimensions() { |
| 3653 |
callback(this.options.beforeSetDimensions, [this]); |
| 3654 |
} |
| 3655 |
setDimensions() { |
| 3656 |
const me = this; |
| 3657 |
if (me.isHorizontal()) { |
| 3658 |
me.width = me.maxWidth; |
| 3659 |
me.left = 0; |
| 3660 |
me.right = me.width; |
| 3661 |
} else { |
| 3662 |
me.height = me.maxHeight; |
| 3663 |
me.top = 0; |
| 3664 |
me.bottom = me.height; |
| 3665 |
} |
| 3666 |
me.paddingLeft = 0; |
| 3667 |
me.paddingTop = 0; |
| 3668 |
me.paddingRight = 0; |
| 3669 |
me.paddingBottom = 0; |
| 3670 |
} |
| 3671 |
afterSetDimensions() { |
| 3672 |
callback(this.options.afterSetDimensions, [this]); |
| 3673 |
} |
| 3674 |
_callHooks(name) { |
| 3675 |
const me = this; |
| 3676 |
me.chart.notifyPlugins(name, me.getContext()); |
| 3677 |
callback(me.options[name], [me]); |
| 3678 |
} |
| 3679 |
beforeDataLimits() { |
| 3680 |
this._callHooks('beforeDataLimits'); |
| 3681 |
} |
| 3682 |
determineDataLimits() {} |
| 3683 |
afterDataLimits() { |
| 3684 |
this._callHooks('afterDataLimits'); |
| 3685 |
} |
| 3686 |
beforeBuildTicks() { |
| 3687 |
this._callHooks('beforeBuildTicks'); |
| 3688 |
} |
| 3689 |
buildTicks() { |
| 3690 |
return []; |
| 3691 |
} |
| 3692 |
afterBuildTicks() { |
| 3693 |
this._callHooks('afterBuildTicks'); |
| 3694 |
} |
| 3695 |
beforeTickToLabelConversion() { |
| 3696 |
callback(this.options.beforeTickToLabelConversion, [this]); |
| 3697 |
} |
| 3698 |
generateTickLabels(ticks) { |
| 3699 |
const me = this; |
| 3700 |
const tickOpts = me.options.ticks; |
| 3701 |
let i, ilen, tick; |
| 3702 |
for (i = 0, ilen = ticks.length; i < ilen; i++) { |
| 3703 |
tick = ticks[i]; |
| 3704 |
tick.label = callback(tickOpts.callback, [tick.value, i, ticks], me); |
| 3705 |
} |
| 3706 |
for (i = 0; i < ilen; i++) { |
| 3707 |
if (isNullOrUndef(ticks[i].label)) { |
| 3708 |
ticks.splice(i, 1); |
| 3709 |
ilen--; |
| 3710 |
i--; |
| 3711 |
} |
| 3712 |
} |
| 3713 |
} |
| 3714 |
afterTickToLabelConversion() { |
| 3715 |
callback(this.options.afterTickToLabelConversion, [this]); |
| 3716 |
} |
| 3717 |
beforeCalculateLabelRotation() { |
| 3718 |
callback(this.options.beforeCalculateLabelRotation, [this]); |
| 3719 |
} |
| 3720 |
calculateLabelRotation() { |
| 3721 |
const me = this; |
| 3722 |
const options = me.options; |
| 3723 |
const tickOpts = options.ticks; |
| 3724 |
const numTicks = me.ticks.length; |
| 3725 |
const minRotation = tickOpts.minRotation || 0; |
| 3726 |
const maxRotation = tickOpts.maxRotation; |
| 3727 |
let labelRotation = minRotation; |
| 3728 |
let tickWidth, maxHeight, maxLabelDiagonal; |
| 3729 |
if (!me._isVisible() || !tickOpts.display || minRotation >= maxRotation || numTicks <= 1 || !me.isHorizontal()) { |
| 3730 |
me.labelRotation = minRotation; |
| 3731 |
return; |
| 3732 |
} |
| 3733 |
const labelSizes = me._getLabelSizes(); |
| 3734 |
const maxLabelWidth = labelSizes.widest.width; |
| 3735 |
const maxLabelHeight = labelSizes.highest.height; |
| 3736 |
const maxWidth = _limitValue(me.chart.width - maxLabelWidth, 0, me.maxWidth); |
| 3737 |
tickWidth = options.offset ? me.maxWidth / numTicks : maxWidth / (numTicks - 1); |
| 3738 |
if (maxLabelWidth + 6 > tickWidth) { |
| 3739 |
tickWidth = maxWidth / (numTicks - (options.offset ? 0.5 : 1)); |
| 3740 |
maxHeight = me.maxHeight - getTickMarkLength(options.grid) |
| 3741 |
- tickOpts.padding - getTitleHeight(options.title, me.chart.options.font); |
| 3742 |
maxLabelDiagonal = Math.sqrt(maxLabelWidth * maxLabelWidth + maxLabelHeight * maxLabelHeight); |
| 3743 |
labelRotation = toDegrees(Math.min( |
| 3744 |
Math.asin(Math.min((labelSizes.highest.height + 6) / tickWidth, 1)), |
| 3745 |
Math.asin(Math.min(maxHeight / maxLabelDiagonal, 1)) - Math.asin(maxLabelHeight / maxLabelDiagonal) |
| 3746 |
)); |
| 3747 |
labelRotation = Math.max(minRotation, Math.min(maxRotation, labelRotation)); |
| 3748 |
} |
| 3749 |
me.labelRotation = labelRotation; |
| 3750 |
} |
| 3751 |
afterCalculateLabelRotation() { |
| 3752 |
callback(this.options.afterCalculateLabelRotation, [this]); |
| 3753 |
} |
| 3754 |
beforeFit() { |
| 3755 |
callback(this.options.beforeFit, [this]); |
| 3756 |
} |
| 3757 |
fit() { |
| 3758 |
const me = this; |
| 3759 |
const minSize = { |
| 3760 |
width: 0, |
| 3761 |
height: 0 |
| 3762 |
}; |
| 3763 |
const {chart, options: {ticks: tickOpts, title: titleOpts, grid: gridOpts}} = me; |
| 3764 |
const display = me._isVisible(); |
| 3765 |
const isHorizontal = me.isHorizontal(); |
| 3766 |
if (display) { |
| 3767 |
const titleHeight = getTitleHeight(titleOpts, chart.options.font); |
| 3768 |
if (isHorizontal) { |
| 3769 |
minSize.width = me.maxWidth; |
| 3770 |
minSize.height = getTickMarkLength(gridOpts) + titleHeight; |
| 3771 |
} else { |
| 3772 |
minSize.height = me.maxHeight; |
| 3773 |
minSize.width = getTickMarkLength(gridOpts) + titleHeight; |
| 3774 |
} |
| 3775 |
if (tickOpts.display && me.ticks.length) { |
| 3776 |
const {first, last, widest, highest} = me._getLabelSizes(); |
| 3777 |
const tickPadding = tickOpts.padding * 2; |
| 3778 |
const angleRadians = toRadians(me.labelRotation); |
| 3779 |
const cos = Math.cos(angleRadians); |
| 3780 |
const sin = Math.sin(angleRadians); |
| 3781 |
if (isHorizontal) { |
| 3782 |
const labelHeight = tickOpts.mirror ? 0 : sin * widest.width + cos * highest.height; |
| 3783 |
minSize.height = Math.min(me.maxHeight, minSize.height + labelHeight + tickPadding); |
| 3784 |
} else { |
| 3785 |
const labelWidth = tickOpts.mirror ? 0 : cos * widest.width + sin * highest.height; |
| 3786 |
minSize.width = Math.min(me.maxWidth, minSize.width + labelWidth + tickPadding); |
| 3787 |
} |
| 3788 |
me._calculatePadding(first, last, sin, cos); |
| 3789 |
} |
| 3790 |
} |
| 3791 |
me._handleMargins(); |
| 3792 |
if (isHorizontal) { |
| 3793 |
me.width = me._length = chart.width - me._margins.left - me._margins.right; |
| 3794 |
me.height = minSize.height; |
| 3795 |
} else { |
| 3796 |
me.width = minSize.width; |
| 3797 |
me.height = me._length = chart.height - me._margins.top - me._margins.bottom; |
| 3798 |
} |
| 3799 |
} |
| 3800 |
_calculatePadding(first, last, sin, cos) { |
| 3801 |
const me = this; |
| 3802 |
const {ticks: {align, padding}, position} = me.options; |
| 3803 |
const isRotated = me.labelRotation !== 0; |
| 3804 |
const labelsBelowTicks = position !== 'top' && me.axis === 'x'; |
| 3805 |
if (me.isHorizontal()) { |
| 3806 |
const offsetLeft = me.getPixelForTick(0) - me.left; |
| 3807 |
const offsetRight = me.right - me.getPixelForTick(me.ticks.length - 1); |
| 3808 |
let paddingLeft = 0; |
| 3809 |
let paddingRight = 0; |
| 3810 |
if (isRotated) { |
| 3811 |
if (labelsBelowTicks) { |
| 3812 |
paddingLeft = cos * first.width; |
| 3813 |
paddingRight = sin * last.height; |
| 3814 |
} else { |
| 3815 |
paddingLeft = sin * first.height; |
| 3816 |
paddingRight = cos * last.width; |
| 3817 |
} |
| 3818 |
} else if (align === 'start') { |
| 3819 |
paddingRight = last.width; |
| 3820 |
} else if (align === 'end') { |
| 3821 |
paddingLeft = first.width; |
| 3822 |
} else { |
| 3823 |
paddingLeft = first.width / 2; |
| 3824 |
paddingRight = last.width / 2; |
| 3825 |
} |
| 3826 |
me.paddingLeft = Math.max((paddingLeft - offsetLeft + padding) * me.width / (me.width - offsetLeft), 0); |
| 3827 |
me.paddingRight = Math.max((paddingRight - offsetRight + padding) * me.width / (me.width - offsetRight), 0); |
| 3828 |
} else { |
| 3829 |
let paddingTop = last.height / 2; |
| 3830 |
let paddingBottom = first.height / 2; |
| 3831 |
if (align === 'start') { |
| 3832 |
paddingTop = 0; |
| 3833 |
paddingBottom = first.height; |
| 3834 |
} else if (align === 'end') { |
| 3835 |
paddingTop = last.height; |
| 3836 |
paddingBottom = 0; |
| 3837 |
} |
| 3838 |
me.paddingTop = paddingTop + padding; |
| 3839 |
me.paddingBottom = paddingBottom + padding; |
| 3840 |
} |
| 3841 |
} |
| 3842 |
_handleMargins() { |
| 3843 |
const me = this; |
| 3844 |
if (me._margins) { |
| 3845 |
me._margins.left = Math.max(me.paddingLeft, me._margins.left); |
| 3846 |
me._margins.top = Math.max(me.paddingTop, me._margins.top); |
| 3847 |
me._margins.right = Math.max(me.paddingRight, me._margins.right); |
| 3848 |
me._margins.bottom = Math.max(me.paddingBottom, me._margins.bottom); |
| 3849 |
} |
| 3850 |
} |
| 3851 |
afterFit() { |
| 3852 |
callback(this.options.afterFit, [this]); |
| 3853 |
} |
| 3854 |
isHorizontal() { |
| 3855 |
const {axis, position} = this.options; |
| 3856 |
return position === 'top' || position === 'bottom' || axis === 'x'; |
| 3857 |
} |
| 3858 |
isFullSize() { |
| 3859 |
return this.options.fullSize; |
| 3860 |
} |
| 3861 |
_convertTicksToLabels(ticks) { |
| 3862 |
const me = this; |
| 3863 |
me.beforeTickToLabelConversion(); |
| 3864 |
me.generateTickLabels(ticks); |
| 3865 |
me.afterTickToLabelConversion(); |
| 3866 |
} |
| 3867 |
_getLabelSizes() { |
| 3868 |
const me = this; |
| 3869 |
let labelSizes = me._labelSizes; |
| 3870 |
if (!labelSizes) { |
| 3871 |
const sampleSize = me.options.ticks.sampleSize; |
| 3872 |
let ticks = me.ticks; |
| 3873 |
if (sampleSize < ticks.length) { |
| 3874 |
ticks = sample(ticks, sampleSize); |
| 3875 |
} |
| 3876 |
me._labelSizes = labelSizes = me._computeLabelSizes(ticks, ticks.length); |
| 3877 |
} |
| 3878 |
return labelSizes; |
| 3879 |
} |
| 3880 |
_computeLabelSizes(ticks, length) { |
| 3881 |
const {ctx, _longestTextCache: caches} = this; |
| 3882 |
const widths = []; |
| 3883 |
const heights = []; |
| 3884 |
let widestLabelSize = 0; |
| 3885 |
let highestLabelSize = 0; |
| 3886 |
let i, j, jlen, label, tickFont, fontString, cache, lineHeight, width, height, nestedLabel; |
| 3887 |
for (i = 0; i < length; ++i) { |
| 3888 |
label = ticks[i].label; |
| 3889 |
tickFont = this._resolveTickFontOptions(i); |
| 3890 |
ctx.font = fontString = tickFont.string; |
| 3891 |
cache = caches[fontString] = caches[fontString] || {data: {}, gc: []}; |
| 3892 |
lineHeight = tickFont.lineHeight; |
| 3893 |
width = height = 0; |
| 3894 |
if (!isNullOrUndef(label) && !isArray(label)) { |
| 3895 |
width = _measureText(ctx, cache.data, cache.gc, width, label); |
| 3896 |
height = lineHeight; |
| 3897 |
} else if (isArray(label)) { |
| 3898 |
for (j = 0, jlen = label.length; j < jlen; ++j) { |
| 3899 |
nestedLabel = label[j]; |
| 3900 |
if (!isNullOrUndef(nestedLabel) && !isArray(nestedLabel)) { |
| 3901 |
width = _measureText(ctx, cache.data, cache.gc, width, nestedLabel); |
| 3902 |
height += lineHeight; |
| 3903 |
} |
| 3904 |
} |
| 3905 |
} |
| 3906 |
widths.push(width); |
| 3907 |
heights.push(height); |
| 3908 |
widestLabelSize = Math.max(width, widestLabelSize); |
| 3909 |
highestLabelSize = Math.max(height, highestLabelSize); |
| 3910 |
} |
| 3911 |
garbageCollect(caches, length); |
| 3912 |
const widest = widths.indexOf(widestLabelSize); |
| 3913 |
const highest = heights.indexOf(highestLabelSize); |
| 3914 |
const valueAt = (idx) => ({width: widths[idx] || 0, height: heights[idx] || 0}); |
| 3915 |
return { |
| 3916 |
first: valueAt(0), |
| 3917 |
last: valueAt(length - 1), |
| 3918 |
widest: valueAt(widest), |
| 3919 |
highest: valueAt(highest), |
| 3920 |
widths, |
| 3921 |
heights, |
| 3922 |
}; |
| 3923 |
} |
| 3924 |
getLabelForValue(value) { |
| 3925 |
return value; |
| 3926 |
} |
| 3927 |
getPixelForValue(value, index) { |
| 3928 |
return NaN; |
| 3929 |
} |
| 3930 |
getValueForPixel(pixel) {} |
| 3931 |
getPixelForTick(index) { |
| 3932 |
const ticks = this.ticks; |
| 3933 |
if (index < 0 || index > ticks.length - 1) { |
| 3934 |
return null; |
| 3935 |
} |
| 3936 |
return this.getPixelForValue(ticks[index].value); |
| 3937 |
} |
| 3938 |
getPixelForDecimal(decimal) { |
| 3939 |
const me = this; |
| 3940 |
if (me._reversePixels) { |
| 3941 |
decimal = 1 - decimal; |
| 3942 |
} |
| 3943 |
const pixel = me._startPixel + decimal * me._length; |
| 3944 |
return _int16Range(me._alignToPixels ? _alignPixel(me.chart, pixel, 0) : pixel); |
| 3945 |
} |
| 3946 |
getDecimalForPixel(pixel) { |
| 3947 |
const decimal = (pixel - this._startPixel) / this._length; |
| 3948 |
return this._reversePixels ? 1 - decimal : decimal; |
| 3949 |
} |
| 3950 |
getBasePixel() { |
| 3951 |
return this.getPixelForValue(this.getBaseValue()); |
| 3952 |
} |
| 3953 |
getBaseValue() { |
| 3954 |
const {min, max} = this; |
| 3955 |
return min < 0 && max < 0 ? max : |
| 3956 |
min > 0 && max > 0 ? min : |
| 3957 |
0; |
| 3958 |
} |
| 3959 |
getContext(index) { |
| 3960 |
const me = this; |
| 3961 |
const ticks = me.ticks || []; |
| 3962 |
if (index >= 0 && index < ticks.length) { |
| 3963 |
const tick = ticks[index]; |
| 3964 |
return tick.$context || |
| 3965 |
(tick.$context = createTickContext(me.getContext(), index, tick)); |
| 3966 |
} |
| 3967 |
return me.$context || |
| 3968 |
(me.$context = createScaleContext(me.chart.getContext(), me)); |
| 3969 |
} |
| 3970 |
_tickSize() { |
| 3971 |
const me = this; |
| 3972 |
const optionTicks = me.options.ticks; |
| 3973 |
const rot = toRadians(me.labelRotation); |
| 3974 |
const cos = Math.abs(Math.cos(rot)); |
| 3975 |
const sin = Math.abs(Math.sin(rot)); |
| 3976 |
const labelSizes = me._getLabelSizes(); |
| 3977 |
const padding = optionTicks.autoSkipPadding || 0; |
| 3978 |
const w = labelSizes ? labelSizes.widest.width + padding : 0; |
| 3979 |
const h = labelSizes ? labelSizes.highest.height + padding : 0; |
| 3980 |
return me.isHorizontal() |
| 3981 |
? h * cos > w * sin ? w / cos : h / sin |
| 3982 |
: h * sin < w * cos ? h / cos : w / sin; |
| 3983 |
} |
| 3984 |
_isVisible() { |
| 3985 |
const display = this.options.display; |
| 3986 |
if (display !== 'auto') { |
| 3987 |
return !!display; |
| 3988 |
} |
| 3989 |
return this.getMatchingVisibleMetas().length > 0; |
| 3990 |
} |
| 3991 |
_computeGridLineItems(chartArea) { |
| 3992 |
const me = this; |
| 3993 |
const axis = me.axis; |
| 3994 |
const chart = me.chart; |
| 3995 |
const options = me.options; |
| 3996 |
const {grid, position} = options; |
| 3997 |
const offset = grid.offset; |
| 3998 |
const isHorizontal = me.isHorizontal(); |
| 3999 |
const ticks = me.ticks; |
| 4000 |
const ticksLength = ticks.length + (offset ? 1 : 0); |
| 4001 |
const tl = getTickMarkLength(grid); |
| 4002 |
const items = []; |
| 4003 |
const borderOpts = grid.setContext(me.getContext()); |
| 4004 |
const axisWidth = borderOpts.drawBorder ? borderOpts.borderWidth : 0; |
| 4005 |
const axisHalfWidth = axisWidth / 2; |
| 4006 |
const alignBorderValue = function(pixel) { |
| 4007 |
return _alignPixel(chart, pixel, axisWidth); |
| 4008 |
}; |
| 4009 |
let borderValue, i, lineValue, alignedLineValue; |
| 4010 |
let tx1, ty1, tx2, ty2, x1, y1, x2, y2; |
| 4011 |
if (position === 'top') { |
| 4012 |
borderValue = alignBorderValue(me.bottom); |
| 4013 |
ty1 = me.bottom - tl; |
| 4014 |
ty2 = borderValue - axisHalfWidth; |
| 4015 |
y1 = alignBorderValue(chartArea.top) + axisHalfWidth; |
| 4016 |
y2 = chartArea.bottom; |
| 4017 |
} else if (position === 'bottom') { |
| 4018 |
borderValue = alignBorderValue(me.top); |
| 4019 |
y1 = chartArea.top; |
| 4020 |
y2 = alignBorderValue(chartArea.bottom) - axisHalfWidth; |
| 4021 |
ty1 = borderValue + axisHalfWidth; |
| 4022 |
ty2 = me.top + tl; |
| 4023 |
} else if (position === 'left') { |
| 4024 |
borderValue = alignBorderValue(me.right); |
| 4025 |
tx1 = me.right - tl; |
| 4026 |
tx2 = borderValue - axisHalfWidth; |
| 4027 |
x1 = alignBorderValue(chartArea.left) + axisHalfWidth; |
| 4028 |
x2 = chartArea.right; |
| 4029 |
} else if (position === 'right') { |
| 4030 |
borderValue = alignBorderValue(me.left); |
| 4031 |
x1 = chartArea.left; |
| 4032 |
x2 = alignBorderValue(chartArea.right) - axisHalfWidth; |
| 4033 |
tx1 = borderValue + axisHalfWidth; |
| 4034 |
tx2 = me.left + tl; |
| 4035 |
} else if (axis === 'x') { |
| 4036 |
if (position === 'center') { |
| 4037 |
borderValue = alignBorderValue((chartArea.top + chartArea.bottom) / 2 + 0.5); |
| 4038 |
} else if (isObject(position)) { |
| 4039 |
const positionAxisID = Object.keys(position)[0]; |
| 4040 |
const value = position[positionAxisID]; |
| 4041 |
borderValue = alignBorderValue(me.chart.scales[positionAxisID].getPixelForValue(value)); |
| 4042 |
} |
| 4043 |
y1 = chartArea.top; |
| 4044 |
y2 = chartArea.bottom; |
| 4045 |
ty1 = borderValue + axisHalfWidth; |
| 4046 |
ty2 = ty1 + tl; |
| 4047 |
} else if (axis === 'y') { |
| 4048 |
if (position === 'center') { |
| 4049 |
borderValue = alignBorderValue((chartArea.left + chartArea.right) / 2); |
| 4050 |
} else if (isObject(position)) { |
| 4051 |
const positionAxisID = Object.keys(position)[0]; |
| 4052 |
const value = position[positionAxisID]; |
| 4053 |
borderValue = alignBorderValue(me.chart.scales[positionAxisID].getPixelForValue(value)); |
| 4054 |
} |
| 4055 |
tx1 = borderValue - axisHalfWidth; |
| 4056 |
tx2 = tx1 - tl; |
| 4057 |
x1 = chartArea.left; |
| 4058 |
x2 = chartArea.right; |
| 4059 |
} |
| 4060 |
for (i = 0; i < ticksLength; ++i) { |
| 4061 |
const optsAtIndex = grid.setContext(me.getContext(i)); |
| 4062 |
const lineWidth = optsAtIndex.lineWidth; |
| 4063 |
const lineColor = optsAtIndex.color; |
| 4064 |
const borderDash = grid.borderDash || []; |
| 4065 |
const borderDashOffset = optsAtIndex.borderDashOffset; |
| 4066 |
const tickWidth = optsAtIndex.tickWidth; |
| 4067 |
const tickColor = optsAtIndex.tickColor; |
| 4068 |
const tickBorderDash = optsAtIndex.tickBorderDash || []; |
| 4069 |
const tickBorderDashOffset = optsAtIndex.tickBorderDashOffset; |
| 4070 |
lineValue = getPixelForGridLine(me, i, offset); |
| 4071 |
if (lineValue === undefined) { |
| 4072 |
continue; |
| 4073 |
} |
| 4074 |
alignedLineValue = _alignPixel(chart, lineValue, lineWidth); |
| 4075 |
if (isHorizontal) { |
| 4076 |
tx1 = tx2 = x1 = x2 = alignedLineValue; |
| 4077 |
} else { |
| 4078 |
ty1 = ty2 = y1 = y2 = alignedLineValue; |
| 4079 |
} |
| 4080 |
items.push({ |
| 4081 |
tx1, |
| 4082 |
ty1, |
| 4083 |
tx2, |
| 4084 |
ty2, |
| 4085 |
x1, |
| 4086 |
y1, |
| 4087 |
x2, |
| 4088 |
y2, |
| 4089 |
width: lineWidth, |
| 4090 |
color: lineColor, |
| 4091 |
borderDash, |
| 4092 |
borderDashOffset, |
| 4093 |
tickWidth, |
| 4094 |
tickColor, |
| 4095 |
tickBorderDash, |
| 4096 |
tickBorderDashOffset, |
| 4097 |
}); |
| 4098 |
} |
| 4099 |
me._ticksLength = ticksLength; |
| 4100 |
me._borderValue = borderValue; |
| 4101 |
return items; |
| 4102 |
} |
| 4103 |
_computeLabelItems(chartArea) { |
| 4104 |
const me = this; |
| 4105 |
const axis = me.axis; |
| 4106 |
const options = me.options; |
| 4107 |
const {position, ticks: optionTicks} = options; |
| 4108 |
const isHorizontal = me.isHorizontal(); |
| 4109 |
const ticks = me.ticks; |
| 4110 |
const {align, crossAlign, padding, mirror} = optionTicks; |
| 4111 |
const tl = getTickMarkLength(options.grid); |
| 4112 |
const tickAndPadding = tl + padding; |
| 4113 |
const hTickAndPadding = mirror ? -padding : tickAndPadding; |
| 4114 |
const rotation = -toRadians(me.labelRotation); |
| 4115 |
const items = []; |
| 4116 |
let i, ilen, tick, label, x, y, textAlign, pixel, font, lineHeight, lineCount, textOffset; |
| 4117 |
let textBaseline = 'middle'; |
| 4118 |
if (position === 'top') { |
| 4119 |
y = me.bottom - hTickAndPadding; |
| 4120 |
textAlign = me._getXAxisLabelAlignment(); |
| 4121 |
} else if (position === 'bottom') { |
| 4122 |
y = me.top + hTickAndPadding; |
| 4123 |
textAlign = me._getXAxisLabelAlignment(); |
| 4124 |
} else if (position === 'left') { |
| 4125 |
const ret = me._getYAxisLabelAlignment(tl); |
| 4126 |
textAlign = ret.textAlign; |
| 4127 |
x = ret.x; |
| 4128 |
} else if (position === 'right') { |
| 4129 |
const ret = me._getYAxisLabelAlignment(tl); |
| 4130 |
textAlign = ret.textAlign; |
| 4131 |
x = ret.x; |
| 4132 |
} else if (axis === 'x') { |
| 4133 |
if (position === 'center') { |
| 4134 |
y = ((chartArea.top + chartArea.bottom) / 2) + tickAndPadding; |
| 4135 |
} else if (isObject(position)) { |
| 4136 |
const positionAxisID = Object.keys(position)[0]; |
| 4137 |
const value = position[positionAxisID]; |
| 4138 |
y = me.chart.scales[positionAxisID].getPixelForValue(value) + tickAndPadding; |
| 4139 |
} |
| 4140 |
textAlign = me._getXAxisLabelAlignment(); |
| 4141 |
} else if (axis === 'y') { |
| 4142 |
if (position === 'center') { |
| 4143 |
x = ((chartArea.left + chartArea.right) / 2) - tickAndPadding; |
| 4144 |
} else if (isObject(position)) { |
| 4145 |
const positionAxisID = Object.keys(position)[0]; |
| 4146 |
const value = position[positionAxisID]; |
| 4147 |
x = me.chart.scales[positionAxisID].getPixelForValue(value); |
| 4148 |
} |
| 4149 |
textAlign = me._getYAxisLabelAlignment(tl).textAlign; |
| 4150 |
} |
| 4151 |
if (axis === 'y') { |
| 4152 |
if (align === 'start') { |
| 4153 |
textBaseline = 'top'; |
| 4154 |
} else if (align === 'end') { |
| 4155 |
textBaseline = 'bottom'; |
| 4156 |
} |
| 4157 |
} |
| 4158 |
const labelSizes = me._getLabelSizes(); |
| 4159 |
for (i = 0, ilen = ticks.length; i < ilen; ++i) { |
| 4160 |
tick = ticks[i]; |
| 4161 |
label = tick.label; |
| 4162 |
const optsAtIndex = optionTicks.setContext(me.getContext(i)); |
| 4163 |
pixel = me.getPixelForTick(i) + optionTicks.labelOffset; |
| 4164 |
font = me._resolveTickFontOptions(i); |
| 4165 |
lineHeight = font.lineHeight; |
| 4166 |
lineCount = isArray(label) ? label.length : 1; |
| 4167 |
const halfCount = lineCount / 2; |
| 4168 |
const color = optsAtIndex.color; |
| 4169 |
const strokeColor = optsAtIndex.textStrokeColor; |
| 4170 |
const strokeWidth = optsAtIndex.textStrokeWidth; |
| 4171 |
if (isHorizontal) { |
| 4172 |
x = pixel; |
| 4173 |
if (position === 'top') { |
| 4174 |
if (crossAlign === 'near' || rotation !== 0) { |
| 4175 |
textOffset = -lineCount * lineHeight + lineHeight / 2; |
| 4176 |
} else if (crossAlign === 'center') { |
| 4177 |
textOffset = -labelSizes.highest.height / 2 - halfCount * lineHeight + lineHeight; |
| 4178 |
} else { |
| 4179 |
textOffset = -labelSizes.highest.height + lineHeight / 2; |
| 4180 |
} |
| 4181 |
} else { |
| 4182 |
if (crossAlign === 'near' || rotation !== 0) { |
| 4183 |
textOffset = lineHeight / 2; |
| 4184 |
} else if (crossAlign === 'center') { |
| 4185 |
textOffset = labelSizes.highest.height / 2 - halfCount * lineHeight; |
| 4186 |
} else { |
| 4187 |
textOffset = labelSizes.highest.height - lineCount * lineHeight; |
| 4188 |
} |
| 4189 |
} |
| 4190 |
if (mirror) { |
| 4191 |
textOffset *= -1; |
| 4192 |
} |
| 4193 |
} else { |
| 4194 |
y = pixel; |
| 4195 |
textOffset = (1 - lineCount) * lineHeight / 2; |
| 4196 |
} |
| 4197 |
let backdrop; |
| 4198 |
if (optsAtIndex.showLabelBackdrop) { |
| 4199 |
const labelPadding = toPadding(optsAtIndex.backdropPadding); |
| 4200 |
const height = labelSizes.heights[i]; |
| 4201 |
const width = labelSizes.widths[i]; |
| 4202 |
let top = y + textOffset - labelPadding.top; |
| 4203 |
let left = x - labelPadding.left; |
| 4204 |
switch (textBaseline) { |
| 4205 |
case 'middle': |
| 4206 |
top -= height / 2; |
| 4207 |
break; |
| 4208 |
case 'bottom': |
| 4209 |
top -= height; |
| 4210 |
break; |
| 4211 |
} |
| 4212 |
switch (textAlign) { |
| 4213 |
case 'center': |
| 4214 |
left -= width / 2; |
| 4215 |
break; |
| 4216 |
case 'right': |
| 4217 |
left -= width; |
| 4218 |
break; |
| 4219 |
} |
| 4220 |
backdrop = { |
| 4221 |
left, |
| 4222 |
top, |
| 4223 |
width: width + labelPadding.width, |
| 4224 |
height: height + labelPadding.height, |
| 4225 |
color: optsAtIndex.backdropColor, |
| 4226 |
}; |
| 4227 |
} |
| 4228 |
items.push({ |
| 4229 |
rotation, |
| 4230 |
label, |
| 4231 |
font, |
| 4232 |
color, |
| 4233 |
strokeColor, |
| 4234 |
strokeWidth, |
| 4235 |
textOffset, |
| 4236 |
textAlign, |
| 4237 |
textBaseline, |
| 4238 |
translation: [x, y], |
| 4239 |
backdrop, |
| 4240 |
}); |
| 4241 |
} |
| 4242 |
return items; |
| 4243 |
} |
| 4244 |
_getXAxisLabelAlignment() { |
| 4245 |
const me = this; |
| 4246 |
const {position, ticks} = me.options; |
| 4247 |
const rotation = -toRadians(me.labelRotation); |
| 4248 |
if (rotation) { |
| 4249 |
return position === 'top' ? 'left' : 'right'; |
| 4250 |
} |
| 4251 |
let align = 'center'; |
| 4252 |
if (ticks.align === 'start') { |
| 4253 |
align = 'left'; |
| 4254 |
} else if (ticks.align === 'end') { |
| 4255 |
align = 'right'; |
| 4256 |
} |
| 4257 |
return align; |
| 4258 |
} |
| 4259 |
_getYAxisLabelAlignment(tl) { |
| 4260 |
const me = this; |
| 4261 |
const {position, ticks: {crossAlign, mirror, padding}} = me.options; |
| 4262 |
const labelSizes = me._getLabelSizes(); |
| 4263 |
const tickAndPadding = tl + padding; |
| 4264 |
const widest = labelSizes.widest.width; |
| 4265 |
let textAlign; |
| 4266 |
let x; |
| 4267 |
if (position === 'left') { |
| 4268 |
if (mirror) { |
| 4269 |
textAlign = 'left'; |
| 4270 |
x = me.right + padding; |
| 4271 |
} else { |
| 4272 |
x = me.right - tickAndPadding; |
| 4273 |
if (crossAlign === 'near') { |
| 4274 |
textAlign = 'right'; |
| 4275 |
} else if (crossAlign === 'center') { |
| 4276 |
textAlign = 'center'; |
| 4277 |
x -= (widest / 2); |
| 4278 |
} else { |
| 4279 |
textAlign = 'left'; |
| 4280 |
x = me.left; |
| 4281 |
} |
| 4282 |
} |
| 4283 |
} else if (position === 'right') { |
| 4284 |
if (mirror) { |
| 4285 |
textAlign = 'right'; |
| 4286 |
x = me.left + padding; |
| 4287 |
} else { |
| 4288 |
x = me.left + tickAndPadding; |
| 4289 |
if (crossAlign === 'near') { |
| 4290 |
textAlign = 'left'; |
| 4291 |
} else if (crossAlign === 'center') { |
| 4292 |
textAlign = 'center'; |
| 4293 |
x += widest / 2; |
| 4294 |
} else { |
| 4295 |
textAlign = 'right'; |
| 4296 |
x = me.right; |
| 4297 |
} |
| 4298 |
} |
| 4299 |
} else { |
| 4300 |
textAlign = 'right'; |
| 4301 |
} |
| 4302 |
return {textAlign, x}; |
| 4303 |
} |
| 4304 |
_computeLabelArea() { |
| 4305 |
const me = this; |
| 4306 |
if (me.options.ticks.mirror) { |
| 4307 |
return; |
| 4308 |
} |
| 4309 |
const chart = me.chart; |
| 4310 |
const position = me.options.position; |
| 4311 |
if (position === 'left' || position === 'right') { |
| 4312 |
return {top: 0, left: me.left, bottom: chart.height, right: me.right}; |
| 4313 |
} if (position === 'top' || position === 'bottom') { |
| 4314 |
return {top: me.top, left: 0, bottom: me.bottom, right: chart.width}; |
| 4315 |
} |
| 4316 |
} |
| 4317 |
drawBackground() { |
| 4318 |
const {ctx, options: {backgroundColor}, left, top, width, height} = this; |
| 4319 |
if (backgroundColor) { |
| 4320 |
ctx.save(); |
| 4321 |
ctx.fillStyle = backgroundColor; |
| 4322 |
ctx.fillRect(left, top, width, height); |
| 4323 |
ctx.restore(); |
| 4324 |
} |
| 4325 |
} |
| 4326 |
getLineWidthForValue(value) { |
| 4327 |
const me = this; |
| 4328 |
const grid = me.options.grid; |
| 4329 |
if (!me._isVisible() || !grid.display) { |
| 4330 |
return 0; |
| 4331 |
} |
| 4332 |
const ticks = me.ticks; |
| 4333 |
const index = ticks.findIndex(t => t.value === value); |
| 4334 |
if (index >= 0) { |
| 4335 |
const opts = grid.setContext(me.getContext(index)); |
| 4336 |
return opts.lineWidth; |
| 4337 |
} |
| 4338 |
return 0; |
| 4339 |
} |
| 4340 |
drawGrid(chartArea) { |
| 4341 |
const me = this; |
| 4342 |
const grid = me.options.grid; |
| 4343 |
const ctx = me.ctx; |
| 4344 |
const items = me._gridLineItems || (me._gridLineItems = me._computeGridLineItems(chartArea)); |
| 4345 |
let i, ilen; |
| 4346 |
const drawLine = (p1, p2, style) => { |
| 4347 |
if (!style.width || !style.color) { |
| 4348 |
return; |
| 4349 |
} |
| 4350 |
ctx.save(); |
| 4351 |
ctx.lineWidth = style.width; |
| 4352 |
ctx.strokeStyle = style.color; |
| 4353 |
ctx.setLineDash(style.borderDash || []); |
| 4354 |
ctx.lineDashOffset = style.borderDashOffset; |
| 4355 |
ctx.beginPath(); |
| 4356 |
ctx.moveTo(p1.x, p1.y); |
| 4357 |
ctx.lineTo(p2.x, p2.y); |
| 4358 |
ctx.stroke(); |
| 4359 |
ctx.restore(); |
| 4360 |
}; |
| 4361 |
if (grid.display) { |
| 4362 |
for (i = 0, ilen = items.length; i < ilen; ++i) { |
| 4363 |
const item = items[i]; |
| 4364 |
if (grid.drawOnChartArea) { |
| 4365 |
drawLine( |
| 4366 |
{x: item.x1, y: item.y1}, |
| 4367 |
{x: item.x2, y: item.y2}, |
| 4368 |
item |
| 4369 |
); |
| 4370 |
} |
| 4371 |
if (grid.drawTicks) { |
| 4372 |
drawLine( |
| 4373 |
{x: item.tx1, y: item.ty1}, |
| 4374 |
{x: item.tx2, y: item.ty2}, |
| 4375 |
{ |
| 4376 |
color: item.tickColor, |
| 4377 |
width: item.tickWidth, |
| 4378 |
borderDash: item.tickBorderDash, |
| 4379 |
borderDashOffset: item.tickBorderDashOffset |
| 4380 |
} |
| 4381 |
); |
| 4382 |
} |
| 4383 |
} |
| 4384 |
} |
| 4385 |
} |
| 4386 |
drawBorder() { |
| 4387 |
const me = this; |
| 4388 |
const {chart, ctx, options: {grid}} = me; |
| 4389 |
const borderOpts = grid.setContext(me.getContext()); |
| 4390 |
const axisWidth = grid.drawBorder ? borderOpts.borderWidth : 0; |
| 4391 |
if (!axisWidth) { |
| 4392 |
return; |
| 4393 |
} |
| 4394 |
const lastLineWidth = grid.setContext(me.getContext(0)).lineWidth; |
| 4395 |
const borderValue = me._borderValue; |
| 4396 |
let x1, x2, y1, y2; |
| 4397 |
if (me.isHorizontal()) { |
| 4398 |
x1 = _alignPixel(chart, me.left, axisWidth) - axisWidth / 2; |
| 4399 |
x2 = _alignPixel(chart, me.right, lastLineWidth) + lastLineWidth / 2; |
| 4400 |
y1 = y2 = borderValue; |
| 4401 |
} else { |
| 4402 |
y1 = _alignPixel(chart, me.top, axisWidth) - axisWidth / 2; |
| 4403 |
y2 = _alignPixel(chart, me.bottom, lastLineWidth) + lastLineWidth / 2; |
| 4404 |
x1 = x2 = borderValue; |
| 4405 |
} |
| 4406 |
ctx.save(); |
| 4407 |
ctx.lineWidth = borderOpts.borderWidth; |
| 4408 |
ctx.strokeStyle = borderOpts.borderColor; |
| 4409 |
ctx.beginPath(); |
| 4410 |
ctx.moveTo(x1, y1); |
| 4411 |
ctx.lineTo(x2, y2); |
| 4412 |
ctx.stroke(); |
| 4413 |
ctx.restore(); |
| 4414 |
} |
| 4415 |
drawLabels(chartArea) { |
| 4416 |
const me = this; |
| 4417 |
const optionTicks = me.options.ticks; |
| 4418 |
if (!optionTicks.display) { |
| 4419 |
return; |
| 4420 |
} |
| 4421 |
const ctx = me.ctx; |
| 4422 |
const area = me._computeLabelArea(); |
| 4423 |
if (area) { |
| 4424 |
clipArea(ctx, area); |
| 4425 |
} |
| 4426 |
const items = me._labelItems || (me._labelItems = me._computeLabelItems(chartArea)); |
| 4427 |
let i, ilen; |
| 4428 |
for (i = 0, ilen = items.length; i < ilen; ++i) { |
| 4429 |
const item = items[i]; |
| 4430 |
const tickFont = item.font; |
| 4431 |
const label = item.label; |
| 4432 |
if (item.backdrop) { |
| 4433 |
ctx.fillStyle = item.backdrop.color; |
| 4434 |
ctx.fillRect(item.backdrop.left, item.backdrop.top, item.backdrop.width, item.backdrop.height); |
| 4435 |
} |
| 4436 |
let y = item.textOffset; |
| 4437 |
renderText(ctx, label, 0, y, tickFont, item); |
| 4438 |
} |
| 4439 |
if (area) { |
| 4440 |
unclipArea(ctx); |
| 4441 |
} |
| 4442 |
} |
| 4443 |
drawTitle() { |
| 4444 |
const {ctx, options: {position, title, reverse}} = this; |
| 4445 |
if (!title.display) { |
| 4446 |
return; |
| 4447 |
} |
| 4448 |
const font = toFont(title.font); |
| 4449 |
const padding = toPadding(title.padding); |
| 4450 |
const align = title.align; |
| 4451 |
let offset = font.lineHeight / 2; |
| 4452 |
if (position === 'bottom') { |
| 4453 |
offset += padding.bottom; |
| 4454 |
if (isArray(title.text)) { |
| 4455 |
offset += font.lineHeight * (title.text.length - 1); |
| 4456 |
} |
| 4457 |
} else { |
| 4458 |
offset += padding.top; |
| 4459 |
} |
| 4460 |
const {titleX, titleY, maxWidth, rotation} = titleArgs(this, offset, position, align); |
| 4461 |
renderText(ctx, title.text, 0, 0, font, { |
| 4462 |
color: title.color, |
| 4463 |
maxWidth, |
| 4464 |
rotation, |
| 4465 |
textAlign: titleAlign(align, position, reverse), |
| 4466 |
textBaseline: 'middle', |
| 4467 |
translation: [titleX, titleY], |
| 4468 |
}); |
| 4469 |
} |
| 4470 |
draw(chartArea) { |
| 4471 |
const me = this; |
| 4472 |
if (!me._isVisible()) { |
| 4473 |
return; |
| 4474 |
} |
| 4475 |
me.drawBackground(); |
| 4476 |
me.drawGrid(chartArea); |
| 4477 |
me.drawBorder(); |
| 4478 |
me.drawTitle(); |
| 4479 |
me.drawLabels(chartArea); |
| 4480 |
} |
| 4481 |
_layers() { |
| 4482 |
const me = this; |
| 4483 |
const opts = me.options; |
| 4484 |
const tz = opts.ticks && opts.ticks.z || 0; |
| 4485 |
const gz = opts.grid && opts.grid.z || 0; |
| 4486 |
if (!me._isVisible() || me.draw !== Scale.prototype.draw) { |
| 4487 |
return [{ |
| 4488 |
z: tz, |
| 4489 |
draw(chartArea) { |
| 4490 |
me.draw(chartArea); |
| 4491 |
} |
| 4492 |
}]; |
| 4493 |
} |
| 4494 |
return [{ |
| 4495 |
z: gz, |
| 4496 |
draw(chartArea) { |
| 4497 |
me.drawBackground(); |
| 4498 |
me.drawGrid(chartArea); |
| 4499 |
me.drawTitle(); |
| 4500 |
} |
| 4501 |
}, { |
| 4502 |
z: gz + 1, |
| 4503 |
draw() { |
| 4504 |
me.drawBorder(); |
| 4505 |
} |
| 4506 |
}, { |
| 4507 |
z: tz, |
| 4508 |
draw(chartArea) { |
| 4509 |
me.drawLabels(chartArea); |
| 4510 |
} |
| 4511 |
}]; |
| 4512 |
} |
| 4513 |
getMatchingVisibleMetas(type) { |
| 4514 |
const me = this; |
| 4515 |
const metas = me.chart.getSortedVisibleDatasetMetas(); |
| 4516 |
const axisID = me.axis + 'AxisID'; |
| 4517 |
const result = []; |
| 4518 |
let i, ilen; |
| 4519 |
for (i = 0, ilen = metas.length; i < ilen; ++i) { |
| 4520 |
const meta = metas[i]; |
| 4521 |
if (meta[axisID] === me.id && (!type || meta.type === type)) { |
| 4522 |
result.push(meta); |
| 4523 |
} |
| 4524 |
} |
| 4525 |
return result; |
| 4526 |
} |
| 4527 |
_resolveTickFontOptions(index) { |
| 4528 |
const opts = this.options.ticks.setContext(this.getContext(index)); |
| 4529 |
return toFont(opts.font); |
| 4530 |
} |
| 4531 |
} |
| 4532 |
|
| 4533 |
class TypedRegistry { |
| 4534 |
constructor(type, scope, override) { |
| 4535 |
this.type = type; |
| 4536 |
this.scope = scope; |
| 4537 |
this.override = override; |
| 4538 |
this.items = Object.create(null); |
| 4539 |
} |
| 4540 |
isForType(type) { |
| 4541 |
return Object.prototype.isPrototypeOf.call(this.type.prototype, type.prototype); |
| 4542 |
} |
| 4543 |
register(item) { |
| 4544 |
const me = this; |
| 4545 |
const proto = Object.getPrototypeOf(item); |
| 4546 |
let parentScope; |
| 4547 |
if (isIChartComponent(proto)) { |
| 4548 |
parentScope = me.register(proto); |
| 4549 |
} |
| 4550 |
const items = me.items; |
| 4551 |
const id = item.id; |
| 4552 |
const scope = me.scope + '.' + id; |
| 4553 |
if (!id) { |
| 4554 |
throw new Error('class does not have id: ' + item); |
| 4555 |
} |
| 4556 |
if (id in items) { |
| 4557 |
return scope; |
| 4558 |
} |
| 4559 |
items[id] = item; |
| 4560 |
registerDefaults(item, scope, parentScope); |
| 4561 |
if (me.override) { |
| 4562 |
defaults.override(item.id, item.overrides); |
| 4563 |
} |
| 4564 |
return scope; |
| 4565 |
} |
| 4566 |
get(id) { |
| 4567 |
return this.items[id]; |
| 4568 |
} |
| 4569 |
unregister(item) { |
| 4570 |
const items = this.items; |
| 4571 |
const id = item.id; |
| 4572 |
const scope = this.scope; |
| 4573 |
if (id in items) { |
| 4574 |
delete items[id]; |
| 4575 |
} |
| 4576 |
if (scope && id in defaults[scope]) { |
| 4577 |
delete defaults[scope][id]; |
| 4578 |
if (this.override) { |
| 4579 |
delete overrides[id]; |
| 4580 |
} |
| 4581 |
} |
| 4582 |
} |
| 4583 |
} |
| 4584 |
function registerDefaults(item, scope, parentScope) { |
| 4585 |
const itemDefaults = merge(Object.create(null), [ |
| 4586 |
parentScope ? defaults.get(parentScope) : {}, |
| 4587 |
defaults.get(scope), |
| 4588 |
item.defaults |
| 4589 |
]); |
| 4590 |
defaults.set(scope, itemDefaults); |
| 4591 |
if (item.defaultRoutes) { |
| 4592 |
routeDefaults(scope, item.defaultRoutes); |
| 4593 |
} |
| 4594 |
if (item.descriptors) { |
| 4595 |
defaults.describe(scope, item.descriptors); |
| 4596 |
} |
| 4597 |
} |
| 4598 |
function routeDefaults(scope, routes) { |
| 4599 |
Object.keys(routes).forEach(property => { |
| 4600 |
const propertyParts = property.split('.'); |
| 4601 |
const sourceName = propertyParts.pop(); |
| 4602 |
const sourceScope = [scope].concat(propertyParts).join('.'); |
| 4603 |
const parts = routes[property].split('.'); |
| 4604 |
const targetName = parts.pop(); |
| 4605 |
const targetScope = parts.join('.'); |
| 4606 |
defaults.route(sourceScope, sourceName, targetScope, targetName); |
| 4607 |
}); |
| 4608 |
} |
| 4609 |
function isIChartComponent(proto) { |
| 4610 |
return 'id' in proto && 'defaults' in proto; |
| 4611 |
} |
| 4612 |
|
| 4613 |
class Registry { |
| 4614 |
constructor() { |
| 4615 |
this.controllers = new TypedRegistry(DatasetController, 'datasets', true); |
| 4616 |
this.elements = new TypedRegistry(Element, 'elements'); |
| 4617 |
this.plugins = new TypedRegistry(Object, 'plugins'); |
| 4618 |
this.scales = new TypedRegistry(Scale, 'scales'); |
| 4619 |
this._typedRegistries = [this.controllers, this.scales, this.elements]; |
| 4620 |
} |
| 4621 |
add(...args) { |
| 4622 |
this._each('register', args); |
| 4623 |
} |
| 4624 |
remove(...args) { |
| 4625 |
this._each('unregister', args); |
| 4626 |
} |
| 4627 |
addControllers(...args) { |
| 4628 |
this._each('register', args, this.controllers); |
| 4629 |
} |
| 4630 |
addElements(...args) { |
| 4631 |
this._each('register', args, this.elements); |
| 4632 |
} |
| 4633 |
addPlugins(...args) { |
| 4634 |
this._each('register', args, this.plugins); |
| 4635 |
} |
| 4636 |
addScales(...args) { |
| 4637 |
this._each('register', args, this.scales); |
| 4638 |
} |
| 4639 |
getController(id) { |
| 4640 |
return this._get(id, this.controllers, 'controller'); |
| 4641 |
} |
| 4642 |
getElement(id) { |
| 4643 |
return this._get(id, this.elements, 'element'); |
| 4644 |
} |
| 4645 |
getPlugin(id) { |
| 4646 |
return this._get(id, this.plugins, 'plugin'); |
| 4647 |
} |
| 4648 |
getScale(id) { |
| 4649 |
return this._get(id, this.scales, 'scale'); |
| 4650 |
} |
| 4651 |
removeControllers(...args) { |
| 4652 |
this._each('unregister', args, this.controllers); |
| 4653 |
} |
| 4654 |
removeElements(...args) { |
| 4655 |
this._each('unregister', args, this.elements); |
| 4656 |
} |
| 4657 |
removePlugins(...args) { |
| 4658 |
this._each('unregister', args, this.plugins); |
| 4659 |
} |
| 4660 |
removeScales(...args) { |
| 4661 |
this._each('unregister', args, this.scales); |
| 4662 |
} |
| 4663 |
_each(method, args, typedRegistry) { |
| 4664 |
const me = this; |
| 4665 |
[...args].forEach(arg => { |
| 4666 |
const reg = typedRegistry || me._getRegistryForType(arg); |
| 4667 |
if (typedRegistry || reg.isForType(arg) || (reg === me.plugins && arg.id)) { |
| 4668 |
me._exec(method, reg, arg); |
| 4669 |
} else { |
| 4670 |
each(arg, item => { |
| 4671 |
const itemReg = typedRegistry || me._getRegistryForType(item); |
| 4672 |
me._exec(method, itemReg, item); |
| 4673 |
}); |
| 4674 |
} |
| 4675 |
}); |
| 4676 |
} |
| 4677 |
_exec(method, registry, component) { |
| 4678 |
const camelMethod = _capitalize(method); |
| 4679 |
callback(component['before' + camelMethod], [], component); |
| 4680 |
registry[method](component); |
| 4681 |
callback(component['after' + camelMethod], [], component); |
| 4682 |
} |
| 4683 |
_getRegistryForType(type) { |
| 4684 |
for (let i = 0; i < this._typedRegistries.length; i++) { |
| 4685 |
const reg = this._typedRegistries[i]; |
| 4686 |
if (reg.isForType(type)) { |
| 4687 |
return reg; |
| 4688 |
} |
| 4689 |
} |
| 4690 |
return this.plugins; |
| 4691 |
} |
| 4692 |
_get(id, typedRegistry, type) { |
| 4693 |
const item = typedRegistry.get(id); |
| 4694 |
if (item === undefined) { |
| 4695 |
throw new Error('"' + id + '" is not a registered ' + type + '.'); |
| 4696 |
} |
| 4697 |
return item; |
| 4698 |
} |
| 4699 |
} |
| 4700 |
var registry = new Registry(); |
| 4701 |
|
| 4702 |
class PluginService { |
| 4703 |
constructor() { |
| 4704 |
this._init = []; |
| 4705 |
} |
| 4706 |
notify(chart, hook, args, filter) { |
| 4707 |
const me = this; |
| 4708 |
if (hook === 'beforeInit') { |
| 4709 |
me._init = me._createDescriptors(chart, true); |
| 4710 |
me._notify(me._init, chart, 'install'); |
| 4711 |
} |
| 4712 |
const descriptors = filter ? me._descriptors(chart).filter(filter) : me._descriptors(chart); |
| 4713 |
const result = me._notify(descriptors, chart, hook, args); |
| 4714 |
if (hook === 'destroy') { |
| 4715 |
me._notify(descriptors, chart, 'stop'); |
| 4716 |
me._notify(me._init, chart, 'uninstall'); |
| 4717 |
} |
| 4718 |
return result; |
| 4719 |
} |
| 4720 |
_notify(descriptors, chart, hook, args) { |
| 4721 |
args = args || {}; |
| 4722 |
for (const descriptor of descriptors) { |
| 4723 |
const plugin = descriptor.plugin; |
| 4724 |
const method = plugin[hook]; |
| 4725 |
const params = [chart, args, descriptor.options]; |
| 4726 |
if (callback(method, params, plugin) === false && args.cancelable) { |
| 4727 |
return false; |
| 4728 |
} |
| 4729 |
} |
| 4730 |
return true; |
| 4731 |
} |
| 4732 |
invalidate() { |
| 4733 |
if (!isNullOrUndef(this._cache)) { |
| 4734 |
this._oldCache = this._cache; |
| 4735 |
this._cache = undefined; |
| 4736 |
} |
| 4737 |
} |
| 4738 |
_descriptors(chart) { |
| 4739 |
if (this._cache) { |
| 4740 |
return this._cache; |
| 4741 |
} |
| 4742 |
const descriptors = this._cache = this._createDescriptors(chart); |
| 4743 |
this._notifyStateChanges(chart); |
| 4744 |
return descriptors; |
| 4745 |
} |
| 4746 |
_createDescriptors(chart, all) { |
| 4747 |
const config = chart && chart.config; |
| 4748 |
const options = valueOrDefault(config.options && config.options.plugins, {}); |
| 4749 |
const plugins = allPlugins(config); |
| 4750 |
return options === false && !all ? [] : createDescriptors(chart, plugins, options, all); |
| 4751 |
} |
| 4752 |
_notifyStateChanges(chart) { |
| 4753 |
const previousDescriptors = this._oldCache || []; |
| 4754 |
const descriptors = this._cache; |
| 4755 |
const diff = (a, b) => a.filter(x => !b.some(y => x.plugin.id === y.plugin.id)); |
| 4756 |
this._notify(diff(previousDescriptors, descriptors), chart, 'stop'); |
| 4757 |
this._notify(diff(descriptors, previousDescriptors), chart, 'start'); |
| 4758 |
} |
| 4759 |
} |
| 4760 |
function allPlugins(config) { |
| 4761 |
const plugins = []; |
| 4762 |
const keys = Object.keys(registry.plugins.items); |
| 4763 |
for (let i = 0; i < keys.length; i++) { |
| 4764 |
plugins.push(registry.getPlugin(keys[i])); |
| 4765 |
} |
| 4766 |
const local = config.plugins || []; |
| 4767 |
for (let i = 0; i < local.length; i++) { |
| 4768 |
const plugin = local[i]; |
| 4769 |
if (plugins.indexOf(plugin) === -1) { |
| 4770 |
plugins.push(plugin); |
| 4771 |
} |
| 4772 |
} |
| 4773 |
return plugins; |
| 4774 |
} |
| 4775 |
function getOpts(options, all) { |
| 4776 |
if (!all && options === false) { |
| 4777 |
return null; |
| 4778 |
} |
| 4779 |
if (options === true) { |
| 4780 |
return {}; |
| 4781 |
} |
| 4782 |
return options; |
| 4783 |
} |
| 4784 |
function createDescriptors(chart, plugins, options, all) { |
| 4785 |
const result = []; |
| 4786 |
const context = chart.getContext(); |
| 4787 |
for (let i = 0; i < plugins.length; i++) { |
| 4788 |
const plugin = plugins[i]; |
| 4789 |
const id = plugin.id; |
| 4790 |
const opts = getOpts(options[id], all); |
| 4791 |
if (opts === null) { |
| 4792 |
continue; |
| 4793 |
} |
| 4794 |
result.push({ |
| 4795 |
plugin, |
| 4796 |
options: pluginOpts(chart.config, plugin, opts, context) |
| 4797 |
}); |
| 4798 |
} |
| 4799 |
return result; |
| 4800 |
} |
| 4801 |
function pluginOpts(config, plugin, opts, context) { |
| 4802 |
const keys = config.pluginScopeKeys(plugin); |
| 4803 |
const scopes = config.getOptionScopes(opts, keys); |
| 4804 |
return config.createResolver(scopes, context, [''], {scriptable: false, indexable: false, allKeys: true}); |
| 4805 |
} |
| 4806 |
|
| 4807 |
function getIndexAxis(type, options) { |
| 4808 |
const datasetDefaults = defaults.datasets[type] || {}; |
| 4809 |
const datasetOptions = (options.datasets || {})[type] || {}; |
| 4810 |
return datasetOptions.indexAxis || options.indexAxis || datasetDefaults.indexAxis || 'x'; |
| 4811 |
} |
| 4812 |
function getAxisFromDefaultScaleID(id, indexAxis) { |
| 4813 |
let axis = id; |
| 4814 |
if (id === '_index_') { |
| 4815 |
axis = indexAxis; |
| 4816 |
} else if (id === '_value_') { |
| 4817 |
axis = indexAxis === 'x' ? 'y' : 'x'; |
| 4818 |
} |
| 4819 |
return axis; |
| 4820 |
} |
| 4821 |
function getDefaultScaleIDFromAxis(axis, indexAxis) { |
| 4822 |
return axis === indexAxis ? '_index_' : '_value_'; |
| 4823 |
} |
| 4824 |
function axisFromPosition(position) { |
| 4825 |
if (position === 'top' || position === 'bottom') { |
| 4826 |
return 'x'; |
| 4827 |
} |
| 4828 |
if (position === 'left' || position === 'right') { |
| 4829 |
return 'y'; |
| 4830 |
} |
| 4831 |
} |
| 4832 |
function determineAxis(id, scaleOptions) { |
| 4833 |
if (id === 'x' || id === 'y') { |
| 4834 |
return id; |
| 4835 |
} |
| 4836 |
return scaleOptions.axis || axisFromPosition(scaleOptions.position) || id.charAt(0).toLowerCase(); |
| 4837 |
} |
| 4838 |
function mergeScaleConfig(config, options) { |
| 4839 |
const chartDefaults = overrides[config.type] || {scales: {}}; |
| 4840 |
const configScales = options.scales || {}; |
| 4841 |
const chartIndexAxis = getIndexAxis(config.type, options); |
| 4842 |
const firstIDs = Object.create(null); |
| 4843 |
const scales = Object.create(null); |
| 4844 |
Object.keys(configScales).forEach(id => { |
| 4845 |
const scaleConf = configScales[id]; |
| 4846 |
const axis = determineAxis(id, scaleConf); |
| 4847 |
const defaultId = getDefaultScaleIDFromAxis(axis, chartIndexAxis); |
| 4848 |
const defaultScaleOptions = chartDefaults.scales || {}; |
| 4849 |
firstIDs[axis] = firstIDs[axis] || id; |
| 4850 |
scales[id] = mergeIf(Object.create(null), [{axis}, scaleConf, defaultScaleOptions[axis], defaultScaleOptions[defaultId]]); |
| 4851 |
}); |
| 4852 |
config.data.datasets.forEach(dataset => { |
| 4853 |
const type = dataset.type || config.type; |
| 4854 |
const indexAxis = dataset.indexAxis || getIndexAxis(type, options); |
| 4855 |
const datasetDefaults = overrides[type] || {}; |
| 4856 |
const defaultScaleOptions = datasetDefaults.scales || {}; |
| 4857 |
Object.keys(defaultScaleOptions).forEach(defaultID => { |
| 4858 |
const axis = getAxisFromDefaultScaleID(defaultID, indexAxis); |
| 4859 |
const id = dataset[axis + 'AxisID'] || firstIDs[axis] || axis; |
| 4860 |
scales[id] = scales[id] || Object.create(null); |
| 4861 |
mergeIf(scales[id], [{axis}, configScales[id], defaultScaleOptions[defaultID]]); |
| 4862 |
}); |
| 4863 |
}); |
| 4864 |
Object.keys(scales).forEach(key => { |
| 4865 |
const scale = scales[key]; |
| 4866 |
mergeIf(scale, [defaults.scales[scale.type], defaults.scale]); |
| 4867 |
}); |
| 4868 |
return scales; |
| 4869 |
} |
| 4870 |
function initOptions(config) { |
| 4871 |
const options = config.options || (config.options = {}); |
| 4872 |
options.plugins = valueOrDefault(options.plugins, {}); |
| 4873 |
options.scales = mergeScaleConfig(config, options); |
| 4874 |
} |
| 4875 |
function initData(data) { |
| 4876 |
data = data || {}; |
| 4877 |
data.datasets = data.datasets || []; |
| 4878 |
data.labels = data.labels || []; |
| 4879 |
return data; |
| 4880 |
} |
| 4881 |
function initConfig(config) { |
| 4882 |
config = config || {}; |
| 4883 |
config.data = initData(config.data); |
| 4884 |
initOptions(config); |
| 4885 |
return config; |
| 4886 |
} |
| 4887 |
const keyCache = new Map(); |
| 4888 |
const keysCached = new Set(); |
| 4889 |
function cachedKeys(cacheKey, generate) { |
| 4890 |
let keys = keyCache.get(cacheKey); |
| 4891 |
if (!keys) { |
| 4892 |
keys = generate(); |
| 4893 |
keyCache.set(cacheKey, keys); |
| 4894 |
keysCached.add(keys); |
| 4895 |
} |
| 4896 |
return keys; |
| 4897 |
} |
| 4898 |
const addIfFound = (set, obj, key) => { |
| 4899 |
const opts = resolveObjectKey(obj, key); |
| 4900 |
if (opts !== undefined) { |
| 4901 |
set.add(opts); |
| 4902 |
} |
| 4903 |
}; |
| 4904 |
class Config { |
| 4905 |
constructor(config) { |
| 4906 |
this._config = initConfig(config); |
| 4907 |
this._scopeCache = new Map(); |
| 4908 |
this._resolverCache = new Map(); |
| 4909 |
} |
| 4910 |
get type() { |
| 4911 |
return this._config.type; |
| 4912 |
} |
| 4913 |
set type(type) { |
| 4914 |
this._config.type = type; |
| 4915 |
} |
| 4916 |
get data() { |
| 4917 |
return this._config.data; |
| 4918 |
} |
| 4919 |
set data(data) { |
| 4920 |
this._config.data = initData(data); |
| 4921 |
} |
| 4922 |
get options() { |
| 4923 |
return this._config.options; |
| 4924 |
} |
| 4925 |
set options(options) { |
| 4926 |
this._config.options = options; |
| 4927 |
} |
| 4928 |
get plugins() { |
| 4929 |
return this._config.plugins; |
| 4930 |
} |
| 4931 |
update() { |
| 4932 |
const config = this._config; |
| 4933 |
this.clearCache(); |
| 4934 |
initOptions(config); |
| 4935 |
} |
| 4936 |
clearCache() { |
| 4937 |
this._scopeCache.clear(); |
| 4938 |
this._resolverCache.clear(); |
| 4939 |
} |
| 4940 |
datasetScopeKeys(datasetType) { |
| 4941 |
return cachedKeys(datasetType, |
| 4942 |
() => [[ |
| 4943 |
`datasets.${datasetType}`, |
| 4944 |
'' |
| 4945 |
]]); |
| 4946 |
} |
| 4947 |
datasetAnimationScopeKeys(datasetType, transition) { |
| 4948 |
return cachedKeys(`${datasetType}.transition.${transition}`, |
| 4949 |
() => [ |
| 4950 |
[ |
| 4951 |
`datasets.${datasetType}.transitions.${transition}`, |
| 4952 |
`transitions.${transition}`, |
| 4953 |
], |
| 4954 |
[ |
| 4955 |
`datasets.${datasetType}`, |
| 4956 |
'' |
| 4957 |
] |
| 4958 |
]); |
| 4959 |
} |
| 4960 |
datasetElementScopeKeys(datasetType, elementType) { |
| 4961 |
return cachedKeys(`${datasetType}-${elementType}`, |
| 4962 |
() => [[ |
| 4963 |
`datasets.${datasetType}.elements.${elementType}`, |
| 4964 |
`datasets.${datasetType}`, |
| 4965 |
`elements.${elementType}`, |
| 4966 |
'' |
| 4967 |
]]); |
| 4968 |
} |
| 4969 |
pluginScopeKeys(plugin) { |
| 4970 |
const id = plugin.id; |
| 4971 |
const type = this.type; |
| 4972 |
return cachedKeys(`${type}-plugin-${id}`, |
| 4973 |
() => [[ |
| 4974 |
`plugins.${id}`, |
| 4975 |
...plugin.additionalOptionScopes || [], |
| 4976 |
]]); |
| 4977 |
} |
| 4978 |
_cachedScopes(mainScope, resetCache) { |
| 4979 |
const _scopeCache = this._scopeCache; |
| 4980 |
let cache = _scopeCache.get(mainScope); |
| 4981 |
if (!cache || resetCache) { |
| 4982 |
cache = new Map(); |
| 4983 |
_scopeCache.set(mainScope, cache); |
| 4984 |
} |
| 4985 |
return cache; |
| 4986 |
} |
| 4987 |
getOptionScopes(mainScope, keyLists, resetCache) { |
| 4988 |
const {options, type} = this; |
| 4989 |
const cache = this._cachedScopes(mainScope, resetCache); |
| 4990 |
const cached = cache.get(keyLists); |
| 4991 |
if (cached) { |
| 4992 |
return cached; |
| 4993 |
} |
| 4994 |
const scopes = new Set(); |
| 4995 |
keyLists.forEach(keys => { |
| 4996 |
if (mainScope) { |
| 4997 |
scopes.add(mainScope); |
| 4998 |
keys.forEach(key => addIfFound(scopes, mainScope, key)); |
| 4999 |
} |
| 5000 |
keys.forEach(key => addIfFound(scopes, options, key)); |
| 5001 |
keys.forEach(key => addIfFound(scopes, overrides[type] || {}, key)); |
| 5002 |
keys.forEach(key => addIfFound(scopes, defaults, key)); |
| 5003 |
keys.forEach(key => addIfFound(scopes, descriptors, key)); |
| 5004 |
}); |
| 5005 |
const array = [...scopes]; |
| 5006 |
if (keysCached.has(keyLists)) { |
| 5007 |
cache.set(keyLists, array); |
| 5008 |
} |
| 5009 |
return array; |
| 5010 |
} |
| 5011 |
chartOptionScopes() { |
| 5012 |
const {options, type} = this; |
| 5013 |
return [ |
| 5014 |
options, |
| 5015 |
overrides[type] || {}, |
| 5016 |
defaults.datasets[type] || {}, |
| 5017 |
{type}, |
| 5018 |
defaults, |
| 5019 |
descriptors |
| 5020 |
]; |
| 5021 |
} |
| 5022 |
resolveNamedOptions(scopes, names, context, prefixes = ['']) { |
| 5023 |
const result = {$shared: true}; |
| 5024 |
const {resolver, subPrefixes} = getResolver(this._resolverCache, scopes, prefixes); |
| 5025 |
let options = resolver; |
| 5026 |
if (needContext(resolver, names)) { |
| 5027 |
result.$shared = false; |
| 5028 |
context = isFunction(context) ? context() : context; |
| 5029 |
const subResolver = this.createResolver(scopes, context, subPrefixes); |
| 5030 |
options = _attachContext(resolver, context, subResolver); |
| 5031 |
} |
| 5032 |
for (const prop of names) { |
| 5033 |
result[prop] = options[prop]; |
| 5034 |
} |
| 5035 |
return result; |
| 5036 |
} |
| 5037 |
createResolver(scopes, context, prefixes = [''], descriptorDefaults) { |
| 5038 |
const {resolver} = getResolver(this._resolverCache, scopes, prefixes); |
| 5039 |
return isObject(context) |
| 5040 |
? _attachContext(resolver, context, undefined, descriptorDefaults) |
| 5041 |
: resolver; |
| 5042 |
} |
| 5043 |
} |
| 5044 |
function getResolver(resolverCache, scopes, prefixes) { |
| 5045 |
let cache = resolverCache.get(scopes); |
| 5046 |
if (!cache) { |
| 5047 |
cache = new Map(); |
| 5048 |
resolverCache.set(scopes, cache); |
| 5049 |
} |
| 5050 |
const cacheKey = prefixes.join(); |
| 5051 |
let cached = cache.get(cacheKey); |
| 5052 |
if (!cached) { |
| 5053 |
const resolver = _createResolver(scopes, prefixes); |
| 5054 |
cached = { |
| 5055 |
resolver, |
| 5056 |
subPrefixes: prefixes.filter(p => !p.toLowerCase().includes('hover')) |
| 5057 |
}; |
| 5058 |
cache.set(cacheKey, cached); |
| 5059 |
} |
| 5060 |
return cached; |
| 5061 |
} |
| 5062 |
function needContext(proxy, names) { |
| 5063 |
const {isScriptable, isIndexable} = _descriptors(proxy); |
| 5064 |
for (const prop of names) { |
| 5065 |
if ((isScriptable(prop) && isFunction(proxy[prop])) |
| 5066 |
|| (isIndexable(prop) && isArray(proxy[prop]))) { |
| 5067 |
return true; |
| 5068 |
} |
| 5069 |
} |
| 5070 |
return false; |
| 5071 |
} |
| 5072 |
|
| 5073 |
var version = "3.2.0"; |
| 5074 |
|
| 5075 |
const KNOWN_POSITIONS = ['top', 'bottom', 'left', 'right', 'chartArea']; |
| 5076 |
function positionIsHorizontal(position, axis) { |
| 5077 |
return position === 'top' || position === 'bottom' || (KNOWN_POSITIONS.indexOf(position) === -1 && axis === 'x'); |
| 5078 |
} |
| 5079 |
function compare2Level(l1, l2) { |
| 5080 |
return function(a, b) { |
| 5081 |
return a[l1] === b[l1] |
| 5082 |
? a[l2] - b[l2] |
| 5083 |
: a[l1] - b[l1]; |
| 5084 |
}; |
| 5085 |
} |
| 5086 |
function onAnimationsComplete(context) { |
| 5087 |
const chart = context.chart; |
| 5088 |
const animationOptions = chart.options.animation; |
| 5089 |
chart.notifyPlugins('afterRender'); |
| 5090 |
callback(animationOptions && animationOptions.onComplete, [context], chart); |
| 5091 |
} |
| 5092 |
function onAnimationProgress(context) { |
| 5093 |
const chart = context.chart; |
| 5094 |
const animationOptions = chart.options.animation; |
| 5095 |
callback(animationOptions && animationOptions.onProgress, [context], chart); |
| 5096 |
} |
| 5097 |
function isDomSupported() { |
| 5098 |
return typeof window !== 'undefined' && typeof document !== 'undefined'; |
| 5099 |
} |
| 5100 |
function getCanvas(item) { |
| 5101 |
if (isDomSupported() && typeof item === 'string') { |
| 5102 |
item = document.getElementById(item); |
| 5103 |
} else if (item && item.length) { |
| 5104 |
item = item[0]; |
| 5105 |
} |
| 5106 |
if (item && item.canvas) { |
| 5107 |
item = item.canvas; |
| 5108 |
} |
| 5109 |
return item; |
| 5110 |
} |
| 5111 |
const instances = {}; |
| 5112 |
const getChart = (key) => { |
| 5113 |
const canvas = getCanvas(key); |
| 5114 |
return Object.values(instances).filter((c) => c.canvas === canvas).pop(); |
| 5115 |
}; |
| 5116 |
class Chart { |
| 5117 |
constructor(item, config) { |
| 5118 |
const me = this; |
| 5119 |
this.config = config = new Config(config); |
| 5120 |
const initialCanvas = getCanvas(item); |
| 5121 |
const existingChart = getChart(initialCanvas); |
| 5122 |
if (existingChart) { |
| 5123 |
throw new Error( |
| 5124 |
'Canvas is already in use. Chart with ID \'' + existingChart.id + '\'' + |
| 5125 |
' must be destroyed before the canvas can be reused.' |
| 5126 |
); |
| 5127 |
} |
| 5128 |
const options = config.createResolver(config.chartOptionScopes(), me.getContext()); |
| 5129 |
this.platform = me._initializePlatform(initialCanvas, config); |
| 5130 |
const context = me.platform.acquireContext(initialCanvas, options.aspectRatio); |
| 5131 |
const canvas = context && context.canvas; |
| 5132 |
const height = canvas && canvas.height; |
| 5133 |
const width = canvas && canvas.width; |
| 5134 |
this.id = uid(); |
| 5135 |
this.ctx = context; |
| 5136 |
this.canvas = canvas; |
| 5137 |
this.width = width; |
| 5138 |
this.height = height; |
| 5139 |
this._options = options; |
| 5140 |
this._aspectRatio = this.aspectRatio; |
| 5141 |
this._layers = []; |
| 5142 |
this._metasets = []; |
| 5143 |
this._stacks = undefined; |
| 5144 |
this.boxes = []; |
| 5145 |
this.currentDevicePixelRatio = undefined; |
| 5146 |
this.chartArea = undefined; |
| 5147 |
this._active = []; |
| 5148 |
this._lastEvent = undefined; |
| 5149 |
this._listeners = {}; |
| 5150 |
this._sortedMetasets = []; |
| 5151 |
this.scales = {}; |
| 5152 |
this.scale = undefined; |
| 5153 |
this._plugins = new PluginService(); |
| 5154 |
this.$proxies = {}; |
| 5155 |
this._hiddenIndices = {}; |
| 5156 |
this.attached = false; |
| 5157 |
this._animationsDisabled = undefined; |
| 5158 |
this.$context = undefined; |
| 5159 |
this._doResize = debounce(() => this.update('resize'), options.resizeDelay || 0); |
| 5160 |
instances[me.id] = me; |
| 5161 |
if (!context || !canvas) { |
| 5162 |
console.error("Failed to create chart: can't acquire context from the given item"); |
| 5163 |
return; |
| 5164 |
} |
| 5165 |
animator.listen(me, 'complete', onAnimationsComplete); |
| 5166 |
animator.listen(me, 'progress', onAnimationProgress); |
| 5167 |
me._initialize(); |
| 5168 |
if (me.attached) { |
| 5169 |
me.update(); |
| 5170 |
} |
| 5171 |
} |
| 5172 |
get aspectRatio() { |
| 5173 |
const {options: {aspectRatio, maintainAspectRatio}, width, height, _aspectRatio} = this; |
| 5174 |
if (!isNullOrUndef(aspectRatio)) { |
| 5175 |
return aspectRatio; |
| 5176 |
} |
| 5177 |
if (maintainAspectRatio && _aspectRatio) { |
| 5178 |
return _aspectRatio; |
| 5179 |
} |
| 5180 |
return height ? width / height : null; |
| 5181 |
} |
| 5182 |
get data() { |
| 5183 |
return this.config.data; |
| 5184 |
} |
| 5185 |
set data(data) { |
| 5186 |
this.config.data = data; |
| 5187 |
} |
| 5188 |
get options() { |
| 5189 |
return this._options; |
| 5190 |
} |
| 5191 |
set options(options) { |
| 5192 |
this.config.options = options; |
| 5193 |
} |
| 5194 |
_initialize() { |
| 5195 |
const me = this; |
| 5196 |
me.notifyPlugins('beforeInit'); |
| 5197 |
if (me.options.responsive) { |
| 5198 |
me.resize(); |
| 5199 |
} else { |
| 5200 |
retinaScale(me, me.options.devicePixelRatio); |
| 5201 |
} |
| 5202 |
me.bindEvents(); |
| 5203 |
me.notifyPlugins('afterInit'); |
| 5204 |
return me; |
| 5205 |
} |
| 5206 |
_initializePlatform(canvas, config) { |
| 5207 |
if (config.platform) { |
| 5208 |
return new config.platform(); |
| 5209 |
} else if (!isDomSupported() || (typeof OffscreenCanvas !== 'undefined' && canvas instanceof OffscreenCanvas)) { |
| 5210 |
return new BasicPlatform(); |
| 5211 |
} |
| 5212 |
return new DomPlatform(); |
| 5213 |
} |
| 5214 |
clear() { |
| 5215 |
clearCanvas(this.canvas, this.ctx); |
| 5216 |
return this; |
| 5217 |
} |
| 5218 |
stop() { |
| 5219 |
animator.stop(this); |
| 5220 |
return this; |
| 5221 |
} |
| 5222 |
resize(width, height) { |
| 5223 |
if (!animator.running(this)) { |
| 5224 |
this._resize(width, height); |
| 5225 |
} else { |
| 5226 |
this._resizeBeforeDraw = {width, height}; |
| 5227 |
} |
| 5228 |
} |
| 5229 |
_resize(width, height) { |
| 5230 |
const me = this; |
| 5231 |
const options = me.options; |
| 5232 |
const canvas = me.canvas; |
| 5233 |
const aspectRatio = options.maintainAspectRatio && me.aspectRatio; |
| 5234 |
const newSize = me.platform.getMaximumSize(canvas, width, height, aspectRatio); |
| 5235 |
const oldRatio = me.currentDevicePixelRatio; |
| 5236 |
const newRatio = options.devicePixelRatio || me.platform.getDevicePixelRatio(); |
| 5237 |
if (me.width === newSize.width && me.height === newSize.height && oldRatio === newRatio) { |
| 5238 |
return; |
| 5239 |
} |
| 5240 |
me.width = newSize.width; |
| 5241 |
me.height = newSize.height; |
| 5242 |
me._aspectRatio = me.aspectRatio; |
| 5243 |
retinaScale(me, newRatio, true); |
| 5244 |
me.notifyPlugins('resize', {size: newSize}); |
| 5245 |
callback(options.onResize, [me, newSize], me); |
| 5246 |
if (me.attached) { |
| 5247 |
if (me._doResize()) { |
| 5248 |
me.render(); |
| 5249 |
} |
| 5250 |
} |
| 5251 |
} |
| 5252 |
ensureScalesHaveIDs() { |
| 5253 |
const options = this.options; |
| 5254 |
const scalesOptions = options.scales || {}; |
| 5255 |
each(scalesOptions, (axisOptions, axisID) => { |
| 5256 |
axisOptions.id = axisID; |
| 5257 |
}); |
| 5258 |
} |
| 5259 |
buildOrUpdateScales() { |
| 5260 |
const me = this; |
| 5261 |
const options = me.options; |
| 5262 |
const scaleOpts = options.scales; |
| 5263 |
const scales = me.scales; |
| 5264 |
const updated = Object.keys(scales).reduce((obj, id) => { |
| 5265 |
obj[id] = false; |
| 5266 |
return obj; |
| 5267 |
}, {}); |
| 5268 |
let items = []; |
| 5269 |
if (scaleOpts) { |
| 5270 |
items = items.concat( |
| 5271 |
Object.keys(scaleOpts).map((id) => { |
| 5272 |
const scaleOptions = scaleOpts[id]; |
| 5273 |
const axis = determineAxis(id, scaleOptions); |
| 5274 |
const isRadial = axis === 'r'; |
| 5275 |
const isHorizontal = axis === 'x'; |
| 5276 |
return { |
| 5277 |
options: scaleOptions, |
| 5278 |
dposition: isRadial ? 'chartArea' : isHorizontal ? 'bottom' : 'left', |
| 5279 |
dtype: isRadial ? 'radialLinear' : isHorizontal ? 'category' : 'linear' |
| 5280 |
}; |
| 5281 |
}) |
| 5282 |
); |
| 5283 |
} |
| 5284 |
each(items, (item) => { |
| 5285 |
const scaleOptions = item.options; |
| 5286 |
const id = scaleOptions.id; |
| 5287 |
const axis = determineAxis(id, scaleOptions); |
| 5288 |
const scaleType = valueOrDefault(scaleOptions.type, item.dtype); |
| 5289 |
if (scaleOptions.position === undefined || positionIsHorizontal(scaleOptions.position, axis) !== positionIsHorizontal(item.dposition)) { |
| 5290 |
scaleOptions.position = item.dposition; |
| 5291 |
} |
| 5292 |
updated[id] = true; |
| 5293 |
let scale = null; |
| 5294 |
if (id in scales && scales[id].type === scaleType) { |
| 5295 |
scale = scales[id]; |
| 5296 |
} else { |
| 5297 |
const scaleClass = registry.getScale(scaleType); |
| 5298 |
scale = new scaleClass({ |
| 5299 |
id, |
| 5300 |
type: scaleType, |
| 5301 |
ctx: me.ctx, |
| 5302 |
chart: me |
| 5303 |
}); |
| 5304 |
scales[scale.id] = scale; |
| 5305 |
} |
| 5306 |
scale.init(scaleOptions, options); |
| 5307 |
}); |
| 5308 |
each(updated, (hasUpdated, id) => { |
| 5309 |
if (!hasUpdated) { |
| 5310 |
delete scales[id]; |
| 5311 |
} |
| 5312 |
}); |
| 5313 |
each(scales, (scale) => { |
| 5314 |
layouts.configure(me, scale, scale.options); |
| 5315 |
layouts.addBox(me, scale); |
| 5316 |
}); |
| 5317 |
} |
| 5318 |
_updateMetasetIndex(meta, index) { |
| 5319 |
const metasets = this._metasets; |
| 5320 |
const oldIndex = meta.index; |
| 5321 |
if (oldIndex !== index) { |
| 5322 |
metasets[oldIndex] = metasets[index]; |
| 5323 |
metasets[index] = meta; |
| 5324 |
meta.index = index; |
| 5325 |
} |
| 5326 |
} |
| 5327 |
_updateMetasets() { |
| 5328 |
const me = this; |
| 5329 |
const metasets = me._metasets; |
| 5330 |
const numData = me.data.datasets.length; |
| 5331 |
const numMeta = metasets.length; |
| 5332 |
if (numMeta > numData) { |
| 5333 |
for (let i = numData; i < numMeta; ++i) { |
| 5334 |
me._destroyDatasetMeta(i); |
| 5335 |
} |
| 5336 |
metasets.splice(numData, numMeta - numData); |
| 5337 |
} |
| 5338 |
me._sortedMetasets = metasets.slice(0).sort(compare2Level('order', 'index')); |
| 5339 |
} |
| 5340 |
_removeUnreferencedMetasets() { |
| 5341 |
const me = this; |
| 5342 |
const {_metasets: metasets, data: {datasets}} = me; |
| 5343 |
if (metasets.length > datasets.length) { |
| 5344 |
delete me._stacks; |
| 5345 |
} |
| 5346 |
metasets.forEach((meta, index) => { |
| 5347 |
if (datasets.filter(x => x === meta._dataset).length === 0) { |
| 5348 |
me._destroyDatasetMeta(index); |
| 5349 |
} |
| 5350 |
}); |
| 5351 |
} |
| 5352 |
buildOrUpdateControllers() { |
| 5353 |
const me = this; |
| 5354 |
const newControllers = []; |
| 5355 |
const datasets = me.data.datasets; |
| 5356 |
let i, ilen; |
| 5357 |
me._removeUnreferencedMetasets(); |
| 5358 |
for (i = 0, ilen = datasets.length; i < ilen; i++) { |
| 5359 |
const dataset = datasets[i]; |
| 5360 |
let meta = me.getDatasetMeta(i); |
| 5361 |
const type = dataset.type || me.config.type; |
| 5362 |
if (meta.type && meta.type !== type) { |
| 5363 |
me._destroyDatasetMeta(i); |
| 5364 |
meta = me.getDatasetMeta(i); |
| 5365 |
} |
| 5366 |
meta.type = type; |
| 5367 |
meta.indexAxis = dataset.indexAxis || getIndexAxis(type, me.options); |
| 5368 |
meta.order = dataset.order || 0; |
| 5369 |
me._updateMetasetIndex(meta, i); |
| 5370 |
meta.label = '' + dataset.label; |
| 5371 |
meta.visible = me.isDatasetVisible(i); |
| 5372 |
if (meta.controller) { |
| 5373 |
meta.controller.updateIndex(i); |
| 5374 |
meta.controller.linkScales(); |
| 5375 |
} else { |
| 5376 |
const ControllerClass = registry.getController(type); |
| 5377 |
const {datasetElementType, dataElementType} = defaults.datasets[type]; |
| 5378 |
Object.assign(ControllerClass.prototype, { |
| 5379 |
dataElementType: registry.getElement(dataElementType), |
| 5380 |
datasetElementType: datasetElementType && registry.getElement(datasetElementType) |
| 5381 |
}); |
| 5382 |
meta.controller = new ControllerClass(me, i); |
| 5383 |
newControllers.push(meta.controller); |
| 5384 |
} |
| 5385 |
} |
| 5386 |
me._updateMetasets(); |
| 5387 |
return newControllers; |
| 5388 |
} |
| 5389 |
_resetElements() { |
| 5390 |
const me = this; |
| 5391 |
each(me.data.datasets, (dataset, datasetIndex) => { |
| 5392 |
me.getDatasetMeta(datasetIndex).controller.reset(); |
| 5393 |
}, me); |
| 5394 |
} |
| 5395 |
reset() { |
| 5396 |
this._resetElements(); |
| 5397 |
this.notifyPlugins('reset'); |
| 5398 |
} |
| 5399 |
update(mode) { |
| 5400 |
const me = this; |
| 5401 |
const config = me.config; |
| 5402 |
config.update(); |
| 5403 |
me._options = config.createResolver(config.chartOptionScopes(), me.getContext()); |
| 5404 |
each(me.scales, (scale) => { |
| 5405 |
layouts.removeBox(me, scale); |
| 5406 |
}); |
| 5407 |
const animsDisabled = me._animationsDisabled = !me.options.animation; |
| 5408 |
me.ensureScalesHaveIDs(); |
| 5409 |
me.buildOrUpdateScales(); |
| 5410 |
const existingEvents = new Set(Object.keys(me._listeners)); |
| 5411 |
const newEvents = new Set(me.options.events); |
| 5412 |
if (!setsEqual(existingEvents, newEvents)) { |
| 5413 |
me.unbindEvents(); |
| 5414 |
me.bindEvents(); |
| 5415 |
} |
| 5416 |
me._plugins.invalidate(); |
| 5417 |
if (me.notifyPlugins('beforeUpdate', {mode, cancelable: true}) === false) { |
| 5418 |
return; |
| 5419 |
} |
| 5420 |
const newControllers = me.buildOrUpdateControllers(); |
| 5421 |
me.notifyPlugins('beforeElementsUpdate'); |
| 5422 |
let minPadding = 0; |
| 5423 |
for (let i = 0, ilen = me.data.datasets.length; i < ilen; i++) { |
| 5424 |
const {controller} = me.getDatasetMeta(i); |
| 5425 |
const reset = !animsDisabled && newControllers.indexOf(controller) === -1; |
| 5426 |
controller.buildOrUpdateElements(reset); |
| 5427 |
minPadding = Math.max(+controller.getMaxOverflow(), minPadding); |
| 5428 |
} |
| 5429 |
me._minPadding = minPadding; |
| 5430 |
me._updateLayout(minPadding); |
| 5431 |
if (!animsDisabled) { |
| 5432 |
each(newControllers, (controller) => { |
| 5433 |
controller.reset(); |
| 5434 |
}); |
| 5435 |
} |
| 5436 |
me._updateDatasets(mode); |
| 5437 |
me.notifyPlugins('afterUpdate', {mode}); |
| 5438 |
me._layers.sort(compare2Level('z', '_idx')); |
| 5439 |
if (me._lastEvent) { |
| 5440 |
me._eventHandler(me._lastEvent, true); |
| 5441 |
} |
| 5442 |
me.render(); |
| 5443 |
} |
| 5444 |
_updateLayout(minPadding) { |
| 5445 |
const me = this; |
| 5446 |
if (me.notifyPlugins('beforeLayout', {cancelable: true}) === false) { |
| 5447 |
return; |
| 5448 |
} |
| 5449 |
layouts.update(me, me.width, me.height, minPadding); |
| 5450 |
const area = me.chartArea; |
| 5451 |
const noArea = area.width <= 0 || area.height <= 0; |
| 5452 |
me._layers = []; |
| 5453 |
each(me.boxes, (box) => { |
| 5454 |
if (noArea && box.position === 'chartArea') { |
| 5455 |
return; |
| 5456 |
} |
| 5457 |
if (box.configure) { |
| 5458 |
box.configure(); |
| 5459 |
} |
| 5460 |
me._layers.push(...box._layers()); |
| 5461 |
}, me); |
| 5462 |
me._layers.forEach((item, index) => { |
| 5463 |
item._idx = index; |
| 5464 |
}); |
| 5465 |
me.notifyPlugins('afterLayout'); |
| 5466 |
} |
| 5467 |
_updateDatasets(mode) { |
| 5468 |
const me = this; |
| 5469 |
const isFunction = typeof mode === 'function'; |
| 5470 |
if (me.notifyPlugins('beforeDatasetsUpdate', {mode, cancelable: true}) === false) { |
| 5471 |
return; |
| 5472 |
} |
| 5473 |
for (let i = 0, ilen = me.data.datasets.length; i < ilen; ++i) { |
| 5474 |
me._updateDataset(i, isFunction ? mode({datasetIndex: i}) : mode); |
| 5475 |
} |
| 5476 |
me.notifyPlugins('afterDatasetsUpdate', {mode}); |
| 5477 |
} |
| 5478 |
_updateDataset(index, mode) { |
| 5479 |
const me = this; |
| 5480 |
const meta = me.getDatasetMeta(index); |
| 5481 |
const args = {meta, index, mode, cancelable: true}; |
| 5482 |
if (me.notifyPlugins('beforeDatasetUpdate', args) === false) { |
| 5483 |
return; |
| 5484 |
} |
| 5485 |
meta.controller._update(mode); |
| 5486 |
args.cancelable = false; |
| 5487 |
me.notifyPlugins('afterDatasetUpdate', args); |
| 5488 |
} |
| 5489 |
render() { |
| 5490 |
const me = this; |
| 5491 |
if (me.notifyPlugins('beforeRender', {cancelable: true}) === false) { |
| 5492 |
return; |
| 5493 |
} |
| 5494 |
if (animator.has(me)) { |
| 5495 |
if (me.attached && !animator.running(me)) { |
| 5496 |
animator.start(me); |
| 5497 |
} |
| 5498 |
} else { |
| 5499 |
me.draw(); |
| 5500 |
onAnimationsComplete({chart: me}); |
| 5501 |
} |
| 5502 |
} |
| 5503 |
draw() { |
| 5504 |
const me = this; |
| 5505 |
let i; |
| 5506 |
if (me._resizeBeforeDraw) { |
| 5507 |
const {width, height} = me._resizeBeforeDraw; |
| 5508 |
me._resize(width, height); |
| 5509 |
me._resizeBeforeDraw = null; |
| 5510 |
} |
| 5511 |
me.clear(); |
| 5512 |
if (me.width <= 0 || me.height <= 0) { |
| 5513 |
return; |
| 5514 |
} |
| 5515 |
if (me.notifyPlugins('beforeDraw', {cancelable: true}) === false) { |
| 5516 |
return; |
| 5517 |
} |
| 5518 |
const layers = me._layers; |
| 5519 |
for (i = 0; i < layers.length && layers[i].z <= 0; ++i) { |
| 5520 |
layers[i].draw(me.chartArea); |
| 5521 |
} |
| 5522 |
me._drawDatasets(); |
| 5523 |
for (; i < layers.length; ++i) { |
| 5524 |
layers[i].draw(me.chartArea); |
| 5525 |
} |
| 5526 |
me.notifyPlugins('afterDraw'); |
| 5527 |
} |
| 5528 |
_getSortedDatasetMetas(filterVisible) { |
| 5529 |
const me = this; |
| 5530 |
const metasets = me._sortedMetasets; |
| 5531 |
const result = []; |
| 5532 |
let i, ilen; |
| 5533 |
for (i = 0, ilen = metasets.length; i < ilen; ++i) { |
| 5534 |
const meta = metasets[i]; |
| 5535 |
if (!filterVisible || meta.visible) { |
| 5536 |
result.push(meta); |
| 5537 |
} |
| 5538 |
} |
| 5539 |
return result; |
| 5540 |
} |
| 5541 |
getSortedVisibleDatasetMetas() { |
| 5542 |
return this._getSortedDatasetMetas(true); |
| 5543 |
} |
| 5544 |
_drawDatasets() { |
| 5545 |
const me = this; |
| 5546 |
if (me.notifyPlugins('beforeDatasetsDraw', {cancelable: true}) === false) { |
| 5547 |
return; |
| 5548 |
} |
| 5549 |
const metasets = me.getSortedVisibleDatasetMetas(); |
| 5550 |
for (let i = metasets.length - 1; i >= 0; --i) { |
| 5551 |
me._drawDataset(metasets[i]); |
| 5552 |
} |
| 5553 |
me.notifyPlugins('afterDatasetsDraw'); |
| 5554 |
} |
| 5555 |
_drawDataset(meta) { |
| 5556 |
const me = this; |
| 5557 |
const ctx = me.ctx; |
| 5558 |
const clip = meta._clip; |
| 5559 |
const area = me.chartArea; |
| 5560 |
const args = { |
| 5561 |
meta, |
| 5562 |
index: meta.index, |
| 5563 |
cancelable: true |
| 5564 |
}; |
| 5565 |
if (me.notifyPlugins('beforeDatasetDraw', args) === false) { |
| 5566 |
return; |
| 5567 |
} |
| 5568 |
clipArea(ctx, { |
| 5569 |
left: clip.left === false ? 0 : area.left - clip.left, |
| 5570 |
right: clip.right === false ? me.width : area.right + clip.right, |
| 5571 |
top: clip.top === false ? 0 : area.top - clip.top, |
| 5572 |
bottom: clip.bottom === false ? me.height : area.bottom + clip.bottom |
| 5573 |
}); |
| 5574 |
meta.controller.draw(); |
| 5575 |
unclipArea(ctx); |
| 5576 |
args.cancelable = false; |
| 5577 |
me.notifyPlugins('afterDatasetDraw', args); |
| 5578 |
} |
| 5579 |
getElementsAtEventForMode(e, mode, options, useFinalPosition) { |
| 5580 |
const method = Interaction.modes[mode]; |
| 5581 |
if (typeof method === 'function') { |
| 5582 |
return method(this, e, options, useFinalPosition); |
| 5583 |
} |
| 5584 |
return []; |
| 5585 |
} |
| 5586 |
getDatasetMeta(datasetIndex) { |
| 5587 |
const me = this; |
| 5588 |
const dataset = me.data.datasets[datasetIndex]; |
| 5589 |
const metasets = me._metasets; |
| 5590 |
let meta = metasets.filter(x => x && x._dataset === dataset).pop(); |
| 5591 |
if (!meta) { |
| 5592 |
meta = metasets[datasetIndex] = { |
| 5593 |
type: null, |
| 5594 |
data: [], |
| 5595 |
dataset: null, |
| 5596 |
controller: null, |
| 5597 |
hidden: null, |
| 5598 |
xAxisID: null, |
| 5599 |
yAxisID: null, |
| 5600 |
order: dataset && dataset.order || 0, |
| 5601 |
index: datasetIndex, |
| 5602 |
_dataset: dataset, |
| 5603 |
_parsed: [], |
| 5604 |
_sorted: false |
| 5605 |
}; |
| 5606 |
} |
| 5607 |
return meta; |
| 5608 |
} |
| 5609 |
getContext() { |
| 5610 |
return this.$context || (this.$context = {chart: this, type: 'chart'}); |
| 5611 |
} |
| 5612 |
getVisibleDatasetCount() { |
| 5613 |
return this.getSortedVisibleDatasetMetas().length; |
| 5614 |
} |
| 5615 |
isDatasetVisible(datasetIndex) { |
| 5616 |
const dataset = this.data.datasets[datasetIndex]; |
| 5617 |
if (!dataset) { |
| 5618 |
return false; |
| 5619 |
} |
| 5620 |
const meta = this.getDatasetMeta(datasetIndex); |
| 5621 |
return typeof meta.hidden === 'boolean' ? !meta.hidden : !dataset.hidden; |
| 5622 |
} |
| 5623 |
setDatasetVisibility(datasetIndex, visible) { |
| 5624 |
const meta = this.getDatasetMeta(datasetIndex); |
| 5625 |
meta.hidden = !visible; |
| 5626 |
} |
| 5627 |
toggleDataVisibility(index) { |
| 5628 |
this._hiddenIndices[index] = !this._hiddenIndices[index]; |
| 5629 |
} |
| 5630 |
getDataVisibility(index) { |
| 5631 |
return !this._hiddenIndices[index]; |
| 5632 |
} |
| 5633 |
_updateDatasetVisibility(datasetIndex, visible) { |
| 5634 |
const me = this; |
| 5635 |
const mode = visible ? 'show' : 'hide'; |
| 5636 |
const meta = me.getDatasetMeta(datasetIndex); |
| 5637 |
const anims = meta.controller._resolveAnimations(undefined, mode); |
| 5638 |
me.setDatasetVisibility(datasetIndex, visible); |
| 5639 |
anims.update(meta, {visible}); |
| 5640 |
me.update((ctx) => ctx.datasetIndex === datasetIndex ? mode : undefined); |
| 5641 |
} |
| 5642 |
hide(datasetIndex) { |
| 5643 |
this._updateDatasetVisibility(datasetIndex, false); |
| 5644 |
} |
| 5645 |
show(datasetIndex) { |
| 5646 |
this._updateDatasetVisibility(datasetIndex, true); |
| 5647 |
} |
| 5648 |
_destroyDatasetMeta(datasetIndex) { |
| 5649 |
const me = this; |
| 5650 |
const meta = me._metasets && me._metasets[datasetIndex]; |
| 5651 |
if (meta && meta.controller) { |
| 5652 |
meta.controller._destroy(); |
| 5653 |
delete me._metasets[datasetIndex]; |
| 5654 |
} |
| 5655 |
} |
| 5656 |
destroy() { |
| 5657 |
const me = this; |
| 5658 |
const {canvas, ctx} = me; |
| 5659 |
let i, ilen; |
| 5660 |
me.stop(); |
| 5661 |
animator.remove(me); |
| 5662 |
for (i = 0, ilen = me.data.datasets.length; i < ilen; ++i) { |
| 5663 |
me._destroyDatasetMeta(i); |
| 5664 |
} |
| 5665 |
me.config.clearCache(); |
| 5666 |
if (canvas) { |
| 5667 |
me.unbindEvents(); |
| 5668 |
clearCanvas(canvas, ctx); |
| 5669 |
me.platform.releaseContext(ctx); |
| 5670 |
me.canvas = null; |
| 5671 |
me.ctx = null; |
| 5672 |
} |
| 5673 |
me.notifyPlugins('destroy'); |
| 5674 |
delete instances[me.id]; |
| 5675 |
} |
| 5676 |
toBase64Image(...args) { |
| 5677 |
return this.canvas.toDataURL(...args); |
| 5678 |
} |
| 5679 |
bindEvents() { |
| 5680 |
const me = this; |
| 5681 |
const listeners = me._listeners; |
| 5682 |
const platform = me.platform; |
| 5683 |
const _add = (type, listener) => { |
| 5684 |
platform.addEventListener(me, type, listener); |
| 5685 |
listeners[type] = listener; |
| 5686 |
}; |
| 5687 |
const _remove = (type, listener) => { |
| 5688 |
if (listeners[type]) { |
| 5689 |
platform.removeEventListener(me, type, listener); |
| 5690 |
delete listeners[type]; |
| 5691 |
} |
| 5692 |
}; |
| 5693 |
let listener = function(e, x, y) { |
| 5694 |
e.offsetX = x; |
| 5695 |
e.offsetY = y; |
| 5696 |
me._eventHandler(e); |
| 5697 |
}; |
| 5698 |
each(me.options.events, (type) => _add(type, listener)); |
| 5699 |
if (me.options.responsive) { |
| 5700 |
listener = (width, height) => { |
| 5701 |
if (me.canvas) { |
| 5702 |
me.resize(width, height); |
| 5703 |
} |
| 5704 |
}; |
| 5705 |
let detached; |
| 5706 |
const attached = () => { |
| 5707 |
_remove('attach', attached); |
| 5708 |
me.attached = true; |
| 5709 |
me.resize(); |
| 5710 |
_add('resize', listener); |
| 5711 |
_add('detach', detached); |
| 5712 |
}; |
| 5713 |
detached = () => { |
| 5714 |
me.attached = false; |
| 5715 |
_remove('resize', listener); |
| 5716 |
_add('attach', attached); |
| 5717 |
}; |
| 5718 |
if (platform.isAttached(me.canvas)) { |
| 5719 |
attached(); |
| 5720 |
} else { |
| 5721 |
detached(); |
| 5722 |
} |
| 5723 |
} else { |
| 5724 |
me.attached = true; |
| 5725 |
} |
| 5726 |
} |
| 5727 |
unbindEvents() { |
| 5728 |
const me = this; |
| 5729 |
const listeners = me._listeners; |
| 5730 |
if (!listeners) { |
| 5731 |
return; |
| 5732 |
} |
| 5733 |
me._listeners = {}; |
| 5734 |
each(listeners, (listener, type) => { |
| 5735 |
me.platform.removeEventListener(me, type, listener); |
| 5736 |
}); |
| 5737 |
} |
| 5738 |
updateHoverStyle(items, mode, enabled) { |
| 5739 |
const prefix = enabled ? 'set' : 'remove'; |
| 5740 |
let meta, item, i, ilen; |
| 5741 |
if (mode === 'dataset') { |
| 5742 |
meta = this.getDatasetMeta(items[0].datasetIndex); |
| 5743 |
meta.controller['_' + prefix + 'DatasetHoverStyle'](); |
| 5744 |
} |
| 5745 |
for (i = 0, ilen = items.length; i < ilen; ++i) { |
| 5746 |
item = items[i]; |
| 5747 |
const controller = item && this.getDatasetMeta(item.datasetIndex).controller; |
| 5748 |
if (controller) { |
| 5749 |
controller[prefix + 'HoverStyle'](item.element, item.datasetIndex, item.index); |
| 5750 |
} |
| 5751 |
} |
| 5752 |
} |
| 5753 |
getActiveElements() { |
| 5754 |
return this._active || []; |
| 5755 |
} |
| 5756 |
setActiveElements(activeElements) { |
| 5757 |
const me = this; |
| 5758 |
const lastActive = me._active || []; |
| 5759 |
const active = activeElements.map(({datasetIndex, index}) => { |
| 5760 |
const meta = me.getDatasetMeta(datasetIndex); |
| 5761 |
if (!meta) { |
| 5762 |
throw new Error('No dataset found at index ' + datasetIndex); |
| 5763 |
} |
| 5764 |
return { |
| 5765 |
datasetIndex, |
| 5766 |
element: meta.data[index], |
| 5767 |
index, |
| 5768 |
}; |
| 5769 |
}); |
| 5770 |
const changed = !_elementsEqual(active, lastActive); |
| 5771 |
if (changed) { |
| 5772 |
me._active = active; |
| 5773 |
me._updateHoverStyles(active, lastActive); |
| 5774 |
} |
| 5775 |
} |
| 5776 |
notifyPlugins(hook, args, filter) { |
| 5777 |
return this._plugins.notify(this, hook, args, filter); |
| 5778 |
} |
| 5779 |
_updateHoverStyles(active, lastActive, replay) { |
| 5780 |
const me = this; |
| 5781 |
const hoverOptions = me.options.hover; |
| 5782 |
const diff = (a, b) => a.filter(x => !b.some(y => x.datasetIndex === y.datasetIndex && x.index === y.index)); |
| 5783 |
const deactivated = diff(lastActive, active); |
| 5784 |
const activated = replay ? active : diff(active, lastActive); |
| 5785 |
if (deactivated.length) { |
| 5786 |
me.updateHoverStyle(deactivated, hoverOptions.mode, false); |
| 5787 |
} |
| 5788 |
if (activated.length && hoverOptions.mode) { |
| 5789 |
me.updateHoverStyle(activated, hoverOptions.mode, true); |
| 5790 |
} |
| 5791 |
} |
| 5792 |
_eventHandler(e, replay) { |
| 5793 |
const me = this; |
| 5794 |
const args = {event: e, replay, cancelable: true}; |
| 5795 |
const eventFilter = (plugin) => (plugin.options.events || this.options.events).includes(e.type); |
| 5796 |
if (me.notifyPlugins('beforeEvent', args, eventFilter) === false) { |
| 5797 |
return; |
| 5798 |
} |
| 5799 |
const changed = me._handleEvent(e, replay); |
| 5800 |
args.cancelable = false; |
| 5801 |
me.notifyPlugins('afterEvent', args, eventFilter); |
| 5802 |
if (changed || args.changed) { |
| 5803 |
me.render(); |
| 5804 |
} |
| 5805 |
return me; |
| 5806 |
} |
| 5807 |
_handleEvent(e, replay) { |
| 5808 |
const me = this; |
| 5809 |
const {_active: lastActive = [], options} = me; |
| 5810 |
const hoverOptions = options.hover; |
| 5811 |
const useFinalPosition = replay; |
| 5812 |
let active = []; |
| 5813 |
let changed = false; |
| 5814 |
let lastEvent = null; |
| 5815 |
if (e.type !== 'mouseout') { |
| 5816 |
active = me.getElementsAtEventForMode(e, hoverOptions.mode, hoverOptions, useFinalPosition); |
| 5817 |
lastEvent = e.type === 'click' ? me._lastEvent : e; |
| 5818 |
} |
| 5819 |
me._lastEvent = null; |
| 5820 |
if (_isPointInArea(e, me.chartArea, me._minPadding)) { |
| 5821 |
callback(options.onHover, [e, active, me], me); |
| 5822 |
if (e.type === 'mouseup' || e.type === 'click' || e.type === 'contextmenu') { |
| 5823 |
callback(options.onClick, [e, active, me], me); |
| 5824 |
} |
| 5825 |
} |
| 5826 |
changed = !_elementsEqual(active, lastActive); |
| 5827 |
if (changed || replay) { |
| 5828 |
me._active = active; |
| 5829 |
me._updateHoverStyles(active, lastActive, replay); |
| 5830 |
} |
| 5831 |
me._lastEvent = lastEvent; |
| 5832 |
return changed; |
| 5833 |
} |
| 5834 |
} |
| 5835 |
const invalidatePlugins = () => each(Chart.instances, (chart) => chart._plugins.invalidate()); |
| 5836 |
const enumerable = true; |
| 5837 |
Object.defineProperties(Chart, { |
| 5838 |
defaults: { |
| 5839 |
enumerable, |
| 5840 |
value: defaults |
| 5841 |
}, |
| 5842 |
instances: { |
| 5843 |
enumerable, |
| 5844 |
value: instances |
| 5845 |
}, |
| 5846 |
overrides: { |
| 5847 |
enumerable, |
| 5848 |
value: overrides |
| 5849 |
}, |
| 5850 |
registry: { |
| 5851 |
enumerable, |
| 5852 |
value: registry |
| 5853 |
}, |
| 5854 |
version: { |
| 5855 |
enumerable, |
| 5856 |
value: version |
| 5857 |
}, |
| 5858 |
getChart: { |
| 5859 |
enumerable, |
| 5860 |
value: getChart |
| 5861 |
}, |
| 5862 |
register: { |
| 5863 |
enumerable, |
| 5864 |
value: (...items) => { |
| 5865 |
registry.add(...items); |
| 5866 |
invalidatePlugins(); |
| 5867 |
} |
| 5868 |
}, |
| 5869 |
unregister: { |
| 5870 |
enumerable, |
| 5871 |
value: (...items) => { |
| 5872 |
registry.remove(...items); |
| 5873 |
invalidatePlugins(); |
| 5874 |
} |
| 5875 |
} |
| 5876 |
}); |
| 5877 |
|
| 5878 |
function clipArc(ctx, element) { |
| 5879 |
const {startAngle, endAngle, pixelMargin, x, y, outerRadius, innerRadius} = element; |
| 5880 |
let angleMargin = pixelMargin / outerRadius; |
| 5881 |
ctx.beginPath(); |
| 5882 |
ctx.arc(x, y, outerRadius, startAngle - angleMargin, endAngle + angleMargin); |
| 5883 |
if (innerRadius > pixelMargin) { |
| 5884 |
angleMargin = pixelMargin / innerRadius; |
| 5885 |
ctx.arc(x, y, innerRadius, endAngle + angleMargin, startAngle - angleMargin, true); |
| 5886 |
} else { |
| 5887 |
ctx.arc(x, y, pixelMargin, endAngle + HALF_PI, startAngle - HALF_PI); |
| 5888 |
} |
| 5889 |
ctx.closePath(); |
| 5890 |
ctx.clip(); |
| 5891 |
} |
| 5892 |
function toRadiusCorners(value) { |
| 5893 |
return _readValueToProps(value, ['outerStart', 'outerEnd', 'innerStart', 'innerEnd']); |
| 5894 |
} |
| 5895 |
function parseBorderRadius$1(arc, innerRadius, outerRadius, angleDelta) { |
| 5896 |
const o = toRadiusCorners(arc.options.borderRadius); |
| 5897 |
const halfThickness = (outerRadius - innerRadius) / 2; |
| 5898 |
const innerLimit = Math.min(halfThickness, angleDelta * innerRadius / 2); |
| 5899 |
const computeOuterLimit = (val) => { |
| 5900 |
const outerArcLimit = (outerRadius - Math.min(halfThickness, val)) * angleDelta / 2; |
| 5901 |
return _limitValue(val, 0, Math.min(halfThickness, outerArcLimit)); |
| 5902 |
}; |
| 5903 |
return { |
| 5904 |
outerStart: computeOuterLimit(o.outerStart), |
| 5905 |
outerEnd: computeOuterLimit(o.outerEnd), |
| 5906 |
innerStart: _limitValue(o.innerStart, 0, innerLimit), |
| 5907 |
innerEnd: _limitValue(o.innerEnd, 0, innerLimit), |
| 5908 |
}; |
| 5909 |
} |
| 5910 |
function rThetaToXY(r, theta, x, y) { |
| 5911 |
return { |
| 5912 |
x: x + r * Math.cos(theta), |
| 5913 |
y: y + r * Math.sin(theta), |
| 5914 |
}; |
| 5915 |
} |
| 5916 |
function pathArc(ctx, element) { |
| 5917 |
const {x, y, startAngle, endAngle, pixelMargin} = element; |
| 5918 |
const outerRadius = Math.max(element.outerRadius - pixelMargin, 0); |
| 5919 |
const innerRadius = element.innerRadius + pixelMargin; |
| 5920 |
const {outerStart, outerEnd, innerStart, innerEnd} = parseBorderRadius$1(element, innerRadius, outerRadius, endAngle - startAngle); |
| 5921 |
const outerStartAdjustedRadius = outerRadius - outerStart; |
| 5922 |
const outerEndAdjustedRadius = outerRadius - outerEnd; |
| 5923 |
const outerStartAdjustedAngle = startAngle + outerStart / outerStartAdjustedRadius; |
| 5924 |
const outerEndAdjustedAngle = endAngle - outerEnd / outerEndAdjustedRadius; |
| 5925 |
const innerStartAdjustedRadius = innerRadius + innerStart; |
| 5926 |
const innerEndAdjustedRadius = innerRadius + innerEnd; |
| 5927 |
const innerStartAdjustedAngle = startAngle + innerStart / innerStartAdjustedRadius; |
| 5928 |
const innerEndAdjustedAngle = endAngle - innerEnd / innerEndAdjustedRadius; |
| 5929 |
ctx.beginPath(); |
| 5930 |
ctx.arc(x, y, outerRadius, outerStartAdjustedAngle, outerEndAdjustedAngle); |
| 5931 |
if (outerEnd > 0) { |
| 5932 |
const pCenter = rThetaToXY(outerEndAdjustedRadius, outerEndAdjustedAngle, x, y); |
| 5933 |
ctx.arc(pCenter.x, pCenter.y, outerEnd, outerEndAdjustedAngle, endAngle + HALF_PI); |
| 5934 |
} |
| 5935 |
const p4 = rThetaToXY(innerEndAdjustedRadius, endAngle, x, y); |
| 5936 |
ctx.lineTo(p4.x, p4.y); |
| 5937 |
if (innerEnd > 0) { |
| 5938 |
const pCenter = rThetaToXY(innerEndAdjustedRadius, innerEndAdjustedAngle, x, y); |
| 5939 |
ctx.arc(pCenter.x, pCenter.y, innerEnd, endAngle + HALF_PI, innerEndAdjustedAngle + Math.PI); |
| 5940 |
} |
| 5941 |
ctx.arc(x, y, innerRadius, endAngle - (innerEnd / innerRadius), startAngle + (innerStart / innerRadius), true); |
| 5942 |
if (innerStart > 0) { |
| 5943 |
const pCenter = rThetaToXY(innerStartAdjustedRadius, innerStartAdjustedAngle, x, y); |
| 5944 |
ctx.arc(pCenter.x, pCenter.y, innerStart, innerStartAdjustedAngle + Math.PI, startAngle - HALF_PI); |
| 5945 |
} |
| 5946 |
const p8 = rThetaToXY(outerStartAdjustedRadius, startAngle, x, y); |
| 5947 |
ctx.lineTo(p8.x, p8.y); |
| 5948 |
if (outerStart > 0) { |
| 5949 |
const pCenter = rThetaToXY(outerStartAdjustedRadius, outerStartAdjustedAngle, x, y); |
| 5950 |
ctx.arc(pCenter.x, pCenter.y, outerStart, startAngle - HALF_PI, outerStartAdjustedAngle); |
| 5951 |
} |
| 5952 |
ctx.closePath(); |
| 5953 |
} |
| 5954 |
function drawArc(ctx, element) { |
| 5955 |
if (element.fullCircles) { |
| 5956 |
element.endAngle = element.startAngle + TAU; |
| 5957 |
pathArc(ctx, element); |
| 5958 |
for (let i = 0; i < element.fullCircles; ++i) { |
| 5959 |
ctx.fill(); |
| 5960 |
} |
| 5961 |
} |
| 5962 |
if (!isNaN(element.circumference)) { |
| 5963 |
element.endAngle = element.startAngle + element.circumference % TAU; |
| 5964 |
} |
| 5965 |
pathArc(ctx, element); |
| 5966 |
ctx.fill(); |
| 5967 |
} |
| 5968 |
function drawFullCircleBorders(ctx, element, inner) { |
| 5969 |
const {x, y, startAngle, endAngle, pixelMargin} = element; |
| 5970 |
const outerRadius = Math.max(element.outerRadius - pixelMargin, 0); |
| 5971 |
const innerRadius = element.innerRadius + pixelMargin; |
| 5972 |
let i; |
| 5973 |
if (inner) { |
| 5974 |
element.endAngle = element.startAngle + TAU; |
| 5975 |
clipArc(ctx, element); |
| 5976 |
element.endAngle = endAngle; |
| 5977 |
if (element.endAngle === element.startAngle) { |
| 5978 |
element.endAngle += TAU; |
| 5979 |
element.fullCircles--; |
| 5980 |
} |
| 5981 |
} |
| 5982 |
ctx.beginPath(); |
| 5983 |
ctx.arc(x, y, innerRadius, startAngle + TAU, startAngle, true); |
| 5984 |
for (i = 0; i < element.fullCircles; ++i) { |
| 5985 |
ctx.stroke(); |
| 5986 |
} |
| 5987 |
ctx.beginPath(); |
| 5988 |
ctx.arc(x, y, outerRadius, startAngle, startAngle + TAU); |
| 5989 |
for (i = 0; i < element.fullCircles; ++i) { |
| 5990 |
ctx.stroke(); |
| 5991 |
} |
| 5992 |
} |
| 5993 |
function drawBorder(ctx, element) { |
| 5994 |
const {options} = element; |
| 5995 |
const inner = options.borderAlign === 'inner'; |
| 5996 |
if (!options.borderWidth) { |
| 5997 |
return; |
| 5998 |
} |
| 5999 |
if (inner) { |
| 6000 |
ctx.lineWidth = options.borderWidth * 2; |
| 6001 |
ctx.lineJoin = 'round'; |
| 6002 |
} else { |
| 6003 |
ctx.lineWidth = options.borderWidth; |
| 6004 |
ctx.lineJoin = 'bevel'; |
| 6005 |
} |
| 6006 |
if (element.fullCircles) { |
| 6007 |
drawFullCircleBorders(ctx, element, inner); |
| 6008 |
} |
| 6009 |
if (inner) { |
| 6010 |
clipArc(ctx, element); |
| 6011 |
} |
| 6012 |
pathArc(ctx, element); |
| 6013 |
ctx.stroke(); |
| 6014 |
} |
| 6015 |
class ArcElement extends Element { |
| 6016 |
constructor(cfg) { |
| 6017 |
super(); |
| 6018 |
this.options = undefined; |
| 6019 |
this.circumference = undefined; |
| 6020 |
this.startAngle = undefined; |
| 6021 |
this.endAngle = undefined; |
| 6022 |
this.innerRadius = undefined; |
| 6023 |
this.outerRadius = undefined; |
| 6024 |
this.pixelMargin = 0; |
| 6025 |
this.fullCircles = 0; |
| 6026 |
if (cfg) { |
| 6027 |
Object.assign(this, cfg); |
| 6028 |
} |
| 6029 |
} |
| 6030 |
inRange(chartX, chartY, useFinalPosition) { |
| 6031 |
const point = this.getProps(['x', 'y'], useFinalPosition); |
| 6032 |
const {angle, distance} = getAngleFromPoint(point, {x: chartX, y: chartY}); |
| 6033 |
const {startAngle, endAngle, innerRadius, outerRadius, circumference} = this.getProps([ |
| 6034 |
'startAngle', |
| 6035 |
'endAngle', |
| 6036 |
'innerRadius', |
| 6037 |
'outerRadius', |
| 6038 |
'circumference' |
| 6039 |
], useFinalPosition); |
| 6040 |
const betweenAngles = circumference >= TAU || _angleBetween(angle, startAngle, endAngle); |
| 6041 |
const withinRadius = (distance >= innerRadius && distance <= outerRadius); |
| 6042 |
return (betweenAngles && withinRadius); |
| 6043 |
} |
| 6044 |
getCenterPoint(useFinalPosition) { |
| 6045 |
const {x, y, startAngle, endAngle, innerRadius, outerRadius} = this.getProps([ |
| 6046 |
'x', |
| 6047 |
'y', |
| 6048 |
'startAngle', |
| 6049 |
'endAngle', |
| 6050 |
'innerRadius', |
| 6051 |
'outerRadius' |
| 6052 |
], useFinalPosition); |
| 6053 |
const halfAngle = (startAngle + endAngle) / 2; |
| 6054 |
const halfRadius = (innerRadius + outerRadius) / 2; |
| 6055 |
return { |
| 6056 |
x: x + Math.cos(halfAngle) * halfRadius, |
| 6057 |
y: y + Math.sin(halfAngle) * halfRadius |
| 6058 |
}; |
| 6059 |
} |
| 6060 |
tooltipPosition(useFinalPosition) { |
| 6061 |
return this.getCenterPoint(useFinalPosition); |
| 6062 |
} |
| 6063 |
draw(ctx) { |
| 6064 |
const me = this; |
| 6065 |
const options = me.options; |
| 6066 |
const offset = options.offset || 0; |
| 6067 |
me.pixelMargin = (options.borderAlign === 'inner') ? 0.33 : 0; |
| 6068 |
me.fullCircles = Math.floor(me.circumference / TAU); |
| 6069 |
if (me.circumference === 0 || me.innerRadius < 0 || me.outerRadius < 0) { |
| 6070 |
return; |
| 6071 |
} |
| 6072 |
ctx.save(); |
| 6073 |
if (offset && me.circumference < TAU) { |
| 6074 |
const halfAngle = (me.startAngle + me.endAngle) / 2; |
| 6075 |
ctx.translate(Math.cos(halfAngle) * offset, Math.sin(halfAngle) * offset); |
| 6076 |
} |
| 6077 |
ctx.fillStyle = options.backgroundColor; |
| 6078 |
ctx.strokeStyle = options.borderColor; |
| 6079 |
drawArc(ctx, me); |
| 6080 |
drawBorder(ctx, me); |
| 6081 |
ctx.restore(); |
| 6082 |
} |
| 6083 |
} |
| 6084 |
ArcElement.id = 'arc'; |
| 6085 |
ArcElement.defaults = { |
| 6086 |
borderAlign: 'center', |
| 6087 |
borderColor: '#fff', |
| 6088 |
borderRadius: 0, |
| 6089 |
borderWidth: 2, |
| 6090 |
offset: 0, |
| 6091 |
angle: undefined, |
| 6092 |
}; |
| 6093 |
ArcElement.defaultRoutes = { |
| 6094 |
backgroundColor: 'backgroundColor' |
| 6095 |
}; |
| 6096 |
|
| 6097 |
function setStyle(ctx, options, style = options) { |
| 6098 |
ctx.lineCap = valueOrDefault(style.borderCapStyle, options.borderCapStyle); |
| 6099 |
ctx.setLineDash(valueOrDefault(style.borderDash, options.borderDash)); |
| 6100 |
ctx.lineDashOffset = valueOrDefault(style.borderDashOffset, options.borderDashOffset); |
| 6101 |
ctx.lineJoin = valueOrDefault(style.borderJoinStyle, options.borderJoinStyle); |
| 6102 |
ctx.lineWidth = valueOrDefault(style.borderWidth, options.borderWidth); |
| 6103 |
ctx.strokeStyle = valueOrDefault(style.borderColor, options.borderColor); |
| 6104 |
} |
| 6105 |
function lineTo(ctx, previous, target) { |
| 6106 |
ctx.lineTo(target.x, target.y); |
| 6107 |
} |
| 6108 |
function getLineMethod(options) { |
| 6109 |
if (options.stepped) { |
| 6110 |
return _steppedLineTo; |
| 6111 |
} |
| 6112 |
if (options.tension) { |
| 6113 |
return _bezierCurveTo; |
| 6114 |
} |
| 6115 |
return lineTo; |
| 6116 |
} |
| 6117 |
function pathVars(points, segment, params = {}) { |
| 6118 |
const count = points.length; |
| 6119 |
const {start: paramsStart = 0, end: paramsEnd = count - 1} = params; |
| 6120 |
const {start: segmentStart, end: segmentEnd} = segment; |
| 6121 |
const start = Math.max(paramsStart, segmentStart); |
| 6122 |
const end = Math.min(paramsEnd, segmentEnd); |
| 6123 |
const outside = paramsStart < segmentStart && paramsEnd < segmentStart || paramsStart > segmentEnd && paramsEnd > segmentEnd; |
| 6124 |
return { |
| 6125 |
count, |
| 6126 |
start, |
| 6127 |
loop: segment.loop, |
| 6128 |
ilen: end < start && !outside ? count + end - start : end - start |
| 6129 |
}; |
| 6130 |
} |
| 6131 |
function pathSegment(ctx, line, segment, params) { |
| 6132 |
const {points, options} = line; |
| 6133 |
const {count, start, loop, ilen} = pathVars(points, segment, params); |
| 6134 |
const lineMethod = getLineMethod(options); |
| 6135 |
let {move = true, reverse} = params || {}; |
| 6136 |
let i, point, prev; |
| 6137 |
for (i = 0; i <= ilen; ++i) { |
| 6138 |
point = points[(start + (reverse ? ilen - i : i)) % count]; |
| 6139 |
if (point.skip) { |
| 6140 |
continue; |
| 6141 |
} else if (move) { |
| 6142 |
ctx.moveTo(point.x, point.y); |
| 6143 |
move = false; |
| 6144 |
} else { |
| 6145 |
lineMethod(ctx, prev, point, reverse, options.stepped); |
| 6146 |
} |
| 6147 |
prev = point; |
| 6148 |
} |
| 6149 |
if (loop) { |
| 6150 |
point = points[(start + (reverse ? ilen : 0)) % count]; |
| 6151 |
lineMethod(ctx, prev, point, reverse, options.stepped); |
| 6152 |
} |
| 6153 |
return !!loop; |
| 6154 |
} |
| 6155 |
function fastPathSegment(ctx, line, segment, params) { |
| 6156 |
const points = line.points; |
| 6157 |
const {count, start, ilen} = pathVars(points, segment, params); |
| 6158 |
const {move = true, reverse} = params || {}; |
| 6159 |
let avgX = 0; |
| 6160 |
let countX = 0; |
| 6161 |
let i, point, prevX, minY, maxY, lastY; |
| 6162 |
const pointIndex = (index) => (start + (reverse ? ilen - index : index)) % count; |
| 6163 |
const drawX = () => { |
| 6164 |
if (minY !== maxY) { |
| 6165 |
ctx.lineTo(avgX, maxY); |
| 6166 |
ctx.lineTo(avgX, minY); |
| 6167 |
ctx.lineTo(avgX, lastY); |
| 6168 |
} |
| 6169 |
}; |
| 6170 |
if (move) { |
| 6171 |
point = points[pointIndex(0)]; |
| 6172 |
ctx.moveTo(point.x, point.y); |
| 6173 |
} |
| 6174 |
for (i = 0; i <= ilen; ++i) { |
| 6175 |
point = points[pointIndex(i)]; |
| 6176 |
if (point.skip) { |
| 6177 |
continue; |
| 6178 |
} |
| 6179 |
const x = point.x; |
| 6180 |
const y = point.y; |
| 6181 |
const truncX = x | 0; |
| 6182 |
if (truncX === prevX) { |
| 6183 |
if (y < minY) { |
| 6184 |
minY = y; |
| 6185 |
} else if (y > maxY) { |
| 6186 |
maxY = y; |
| 6187 |
} |
| 6188 |
avgX = (countX * avgX + x) / ++countX; |
| 6189 |
} else { |
| 6190 |
drawX(); |
| 6191 |
ctx.lineTo(x, y); |
| 6192 |
prevX = truncX; |
| 6193 |
countX = 0; |
| 6194 |
minY = maxY = y; |
| 6195 |
} |
| 6196 |
lastY = y; |
| 6197 |
} |
| 6198 |
drawX(); |
| 6199 |
} |
| 6200 |
function _getSegmentMethod(line) { |
| 6201 |
const opts = line.options; |
| 6202 |
const borderDash = opts.borderDash && opts.borderDash.length; |
| 6203 |
const useFastPath = !line._decimated && !line._loop && !opts.tension && !opts.stepped && !borderDash; |
| 6204 |
return useFastPath ? fastPathSegment : pathSegment; |
| 6205 |
} |
| 6206 |
function _getInterpolationMethod(options) { |
| 6207 |
if (options.stepped) { |
| 6208 |
return _steppedInterpolation; |
| 6209 |
} |
| 6210 |
if (options.tension) { |
| 6211 |
return _bezierInterpolation; |
| 6212 |
} |
| 6213 |
return _pointInLine; |
| 6214 |
} |
| 6215 |
function strokePathWithCache(ctx, line, start, count) { |
| 6216 |
let path = line._path; |
| 6217 |
if (!path) { |
| 6218 |
path = line._path = new Path2D(); |
| 6219 |
if (line.path(path, start, count)) { |
| 6220 |
path.closePath(); |
| 6221 |
} |
| 6222 |
} |
| 6223 |
setStyle(ctx, line.options); |
| 6224 |
ctx.stroke(path); |
| 6225 |
} |
| 6226 |
function strokePathDirect(ctx, line, start, count) { |
| 6227 |
const {segments, options} = line; |
| 6228 |
const segmentMethod = _getSegmentMethod(line); |
| 6229 |
for (const segment of segments) { |
| 6230 |
setStyle(ctx, options, segment.style); |
| 6231 |
ctx.beginPath(); |
| 6232 |
if (segmentMethod(ctx, line, segment, {start, end: start + count - 1})) { |
| 6233 |
ctx.closePath(); |
| 6234 |
} |
| 6235 |
ctx.stroke(); |
| 6236 |
} |
| 6237 |
} |
| 6238 |
const usePath2D = typeof Path2D === 'function'; |
| 6239 |
function draw(ctx, line, start, count) { |
| 6240 |
if (usePath2D && line.segments.length === 1) { |
| 6241 |
strokePathWithCache(ctx, line, start, count); |
| 6242 |
} else { |
| 6243 |
strokePathDirect(ctx, line, start, count); |
| 6244 |
} |
| 6245 |
} |
| 6246 |
class LineElement extends Element { |
| 6247 |
constructor(cfg) { |
| 6248 |
super(); |
| 6249 |
this.animated = true; |
| 6250 |
this.options = undefined; |
| 6251 |
this._loop = undefined; |
| 6252 |
this._fullLoop = undefined; |
| 6253 |
this._path = undefined; |
| 6254 |
this._points = undefined; |
| 6255 |
this._segments = undefined; |
| 6256 |
this._decimated = false; |
| 6257 |
this._pointsUpdated = false; |
| 6258 |
if (cfg) { |
| 6259 |
Object.assign(this, cfg); |
| 6260 |
} |
| 6261 |
} |
| 6262 |
updateControlPoints(chartArea) { |
| 6263 |
const me = this; |
| 6264 |
const options = me.options; |
| 6265 |
if (options.tension && !options.stepped && !me._pointsUpdated) { |
| 6266 |
const loop = options.spanGaps ? me._loop : me._fullLoop; |
| 6267 |
_updateBezierControlPoints(me._points, options, chartArea, loop); |
| 6268 |
me._pointsUpdated = true; |
| 6269 |
} |
| 6270 |
} |
| 6271 |
set points(points) { |
| 6272 |
const me = this; |
| 6273 |
me._points = points; |
| 6274 |
delete me._segments; |
| 6275 |
delete me._path; |
| 6276 |
me._pointsUpdated = false; |
| 6277 |
} |
| 6278 |
get points() { |
| 6279 |
return this._points; |
| 6280 |
} |
| 6281 |
get segments() { |
| 6282 |
return this._segments || (this._segments = _computeSegments(this, this.options.segment)); |
| 6283 |
} |
| 6284 |
first() { |
| 6285 |
const segments = this.segments; |
| 6286 |
const points = this.points; |
| 6287 |
return segments.length && points[segments[0].start]; |
| 6288 |
} |
| 6289 |
last() { |
| 6290 |
const segments = this.segments; |
| 6291 |
const points = this.points; |
| 6292 |
const count = segments.length; |
| 6293 |
return count && points[segments[count - 1].end]; |
| 6294 |
} |
| 6295 |
interpolate(point, property) { |
| 6296 |
const me = this; |
| 6297 |
const options = me.options; |
| 6298 |
const value = point[property]; |
| 6299 |
const points = me.points; |
| 6300 |
const segments = _boundSegments(me, {property, start: value, end: value}); |
| 6301 |
if (!segments.length) { |
| 6302 |
return; |
| 6303 |
} |
| 6304 |
const result = []; |
| 6305 |
const _interpolate = _getInterpolationMethod(options); |
| 6306 |
let i, ilen; |
| 6307 |
for (i = 0, ilen = segments.length; i < ilen; ++i) { |
| 6308 |
const {start, end} = segments[i]; |
| 6309 |
const p1 = points[start]; |
| 6310 |
const p2 = points[end]; |
| 6311 |
if (p1 === p2) { |
| 6312 |
result.push(p1); |
| 6313 |
continue; |
| 6314 |
} |
| 6315 |
const t = Math.abs((value - p1[property]) / (p2[property] - p1[property])); |
| 6316 |
const interpolated = _interpolate(p1, p2, t, options.stepped); |
| 6317 |
interpolated[property] = point[property]; |
| 6318 |
result.push(interpolated); |
| 6319 |
} |
| 6320 |
return result.length === 1 ? result[0] : result; |
| 6321 |
} |
| 6322 |
pathSegment(ctx, segment, params) { |
| 6323 |
const segmentMethod = _getSegmentMethod(this); |
| 6324 |
return segmentMethod(ctx, this, segment, params); |
| 6325 |
} |
| 6326 |
path(ctx, start, count) { |
| 6327 |
const me = this; |
| 6328 |
const segments = me.segments; |
| 6329 |
const segmentMethod = _getSegmentMethod(me); |
| 6330 |
let loop = me._loop; |
| 6331 |
start = start || 0; |
| 6332 |
count = count || (me.points.length - start); |
| 6333 |
for (const segment of segments) { |
| 6334 |
loop &= segmentMethod(ctx, me, segment, {start, end: start + count - 1}); |
| 6335 |
} |
| 6336 |
return !!loop; |
| 6337 |
} |
| 6338 |
draw(ctx, chartArea, start, count) { |
| 6339 |
const me = this; |
| 6340 |
const options = me.options || {}; |
| 6341 |
const points = me.points || []; |
| 6342 |
if (!points.length || !options.borderWidth) { |
| 6343 |
return; |
| 6344 |
} |
| 6345 |
ctx.save(); |
| 6346 |
draw(ctx, me, start, count); |
| 6347 |
ctx.restore(); |
| 6348 |
if (me.animated) { |
| 6349 |
me._pointsUpdated = false; |
| 6350 |
me._path = undefined; |
| 6351 |
} |
| 6352 |
} |
| 6353 |
} |
| 6354 |
LineElement.id = 'line'; |
| 6355 |
LineElement.defaults = { |
| 6356 |
borderCapStyle: 'butt', |
| 6357 |
borderDash: [], |
| 6358 |
borderDashOffset: 0, |
| 6359 |
borderJoinStyle: 'miter', |
| 6360 |
borderWidth: 3, |
| 6361 |
capBezierPoints: true, |
| 6362 |
cubicInterpolationMode: 'default', |
| 6363 |
fill: false, |
| 6364 |
spanGaps: false, |
| 6365 |
stepped: false, |
| 6366 |
tension: 0, |
| 6367 |
}; |
| 6368 |
LineElement.defaultRoutes = { |
| 6369 |
backgroundColor: 'backgroundColor', |
| 6370 |
borderColor: 'borderColor' |
| 6371 |
}; |
| 6372 |
LineElement.descriptors = { |
| 6373 |
_scriptable: true, |
| 6374 |
_indexable: (name) => name !== 'borderDash' && name !== 'fill', |
| 6375 |
}; |
| 6376 |
|
| 6377 |
function inRange$1(el, pos, axis, useFinalPosition) { |
| 6378 |
const options = el.options; |
| 6379 |
const {[axis]: value} = el.getProps([axis], useFinalPosition); |
| 6380 |
return (Math.abs(pos - value) < options.radius + options.hitRadius); |
| 6381 |
} |
| 6382 |
class PointElement extends Element { |
| 6383 |
constructor(cfg) { |
| 6384 |
super(); |
| 6385 |
this.options = undefined; |
| 6386 |
this.parsed = undefined; |
| 6387 |
this.skip = undefined; |
| 6388 |
this.stop = undefined; |
| 6389 |
if (cfg) { |
| 6390 |
Object.assign(this, cfg); |
| 6391 |
} |
| 6392 |
} |
| 6393 |
inRange(mouseX, mouseY, useFinalPosition) { |
| 6394 |
const options = this.options; |
| 6395 |
const {x, y} = this.getProps(['x', 'y'], useFinalPosition); |
| 6396 |
return ((Math.pow(mouseX - x, 2) + Math.pow(mouseY - y, 2)) < Math.pow(options.hitRadius + options.radius, 2)); |
| 6397 |
} |
| 6398 |
inXRange(mouseX, useFinalPosition) { |
| 6399 |
return inRange$1(this, mouseX, 'x', useFinalPosition); |
| 6400 |
} |
| 6401 |
inYRange(mouseY, useFinalPosition) { |
| 6402 |
return inRange$1(this, mouseY, 'y', useFinalPosition); |
| 6403 |
} |
| 6404 |
getCenterPoint(useFinalPosition) { |
| 6405 |
const {x, y} = this.getProps(['x', 'y'], useFinalPosition); |
| 6406 |
return {x, y}; |
| 6407 |
} |
| 6408 |
size(options) { |
| 6409 |
options = options || this.options || {}; |
| 6410 |
let radius = options.radius || 0; |
| 6411 |
radius = Math.max(radius, radius && options.hoverRadius || 0); |
| 6412 |
const borderWidth = radius && options.borderWidth || 0; |
| 6413 |
return (radius + borderWidth) * 2; |
| 6414 |
} |
| 6415 |
draw(ctx) { |
| 6416 |
const me = this; |
| 6417 |
const options = me.options; |
| 6418 |
if (me.skip || options.radius < 0.1) { |
| 6419 |
return; |
| 6420 |
} |
| 6421 |
ctx.strokeStyle = options.borderColor; |
| 6422 |
ctx.lineWidth = options.borderWidth; |
| 6423 |
ctx.fillStyle = options.backgroundColor; |
| 6424 |
drawPoint(ctx, options, me.x, me.y); |
| 6425 |
} |
| 6426 |
getRange() { |
| 6427 |
const options = this.options || {}; |
| 6428 |
return options.radius + options.hitRadius; |
| 6429 |
} |
| 6430 |
} |
| 6431 |
PointElement.id = 'point'; |
| 6432 |
PointElement.defaults = { |
| 6433 |
borderWidth: 1, |
| 6434 |
hitRadius: 1, |
| 6435 |
hoverBorderWidth: 1, |
| 6436 |
hoverRadius: 4, |
| 6437 |
pointStyle: 'circle', |
| 6438 |
radius: 3, |
| 6439 |
rotation: 0 |
| 6440 |
}; |
| 6441 |
PointElement.defaultRoutes = { |
| 6442 |
backgroundColor: 'backgroundColor', |
| 6443 |
borderColor: 'borderColor' |
| 6444 |
}; |
| 6445 |
|
| 6446 |
function getBarBounds(bar, useFinalPosition) { |
| 6447 |
const {x, y, base, width, height} = bar.getProps(['x', 'y', 'base', 'width', 'height'], useFinalPosition); |
| 6448 |
let left, right, top, bottom, half; |
| 6449 |
if (bar.horizontal) { |
| 6450 |
half = height / 2; |
| 6451 |
left = Math.min(x, base); |
| 6452 |
right = Math.max(x, base); |
| 6453 |
top = y - half; |
| 6454 |
bottom = y + half; |
| 6455 |
} else { |
| 6456 |
half = width / 2; |
| 6457 |
left = x - half; |
| 6458 |
right = x + half; |
| 6459 |
top = Math.min(y, base); |
| 6460 |
bottom = Math.max(y, base); |
| 6461 |
} |
| 6462 |
return {left, top, right, bottom}; |
| 6463 |
} |
| 6464 |
function parseBorderSkipped(bar) { |
| 6465 |
let edge = bar.options.borderSkipped; |
| 6466 |
const res = {}; |
| 6467 |
if (!edge) { |
| 6468 |
return res; |
| 6469 |
} |
| 6470 |
edge = bar.horizontal |
| 6471 |
? parseEdge(edge, 'left', 'right', bar.base > bar.x) |
| 6472 |
: parseEdge(edge, 'bottom', 'top', bar.base < bar.y); |
| 6473 |
res[edge] = true; |
| 6474 |
return res; |
| 6475 |
} |
| 6476 |
function parseEdge(edge, a, b, reverse) { |
| 6477 |
if (reverse) { |
| 6478 |
edge = swap(edge, a, b); |
| 6479 |
edge = startEnd(edge, b, a); |
| 6480 |
} else { |
| 6481 |
edge = startEnd(edge, a, b); |
| 6482 |
} |
| 6483 |
return edge; |
| 6484 |
} |
| 6485 |
function swap(orig, v1, v2) { |
| 6486 |
return orig === v1 ? v2 : orig === v2 ? v1 : orig; |
| 6487 |
} |
| 6488 |
function startEnd(v, start, end) { |
| 6489 |
return v === 'start' ? start : v === 'end' ? end : v; |
| 6490 |
} |
| 6491 |
function skipOrLimit(skip, value, min, max) { |
| 6492 |
return skip ? 0 : Math.max(Math.min(value, max), min); |
| 6493 |
} |
| 6494 |
function parseBorderWidth(bar, maxW, maxH) { |
| 6495 |
const value = bar.options.borderWidth; |
| 6496 |
const skip = parseBorderSkipped(bar); |
| 6497 |
const o = toTRBL(value); |
| 6498 |
return { |
| 6499 |
t: skipOrLimit(skip.top, o.top, 0, maxH), |
| 6500 |
r: skipOrLimit(skip.right, o.right, 0, maxW), |
| 6501 |
b: skipOrLimit(skip.bottom, o.bottom, 0, maxH), |
| 6502 |
l: skipOrLimit(skip.left, o.left, 0, maxW) |
| 6503 |
}; |
| 6504 |
} |
| 6505 |
function parseBorderRadius(bar, maxW, maxH) { |
| 6506 |
const {enableBorderRadius} = bar.getProps(['enableBorderRadius']); |
| 6507 |
const value = bar.options.borderRadius; |
| 6508 |
const o = toTRBLCorners(value); |
| 6509 |
const maxR = Math.min(maxW, maxH); |
| 6510 |
const skip = parseBorderSkipped(bar); |
| 6511 |
const enableBorder = enableBorderRadius || isObject(value); |
| 6512 |
return { |
| 6513 |
topLeft: skipOrLimit(!enableBorder || skip.top || skip.left, o.topLeft, 0, maxR), |
| 6514 |
topRight: skipOrLimit(!enableBorder || skip.top || skip.right, o.topRight, 0, maxR), |
| 6515 |
bottomLeft: skipOrLimit(!enableBorder || skip.bottom || skip.left, o.bottomLeft, 0, maxR), |
| 6516 |
bottomRight: skipOrLimit(!enableBorder || skip.bottom || skip.right, o.bottomRight, 0, maxR) |
| 6517 |
}; |
| 6518 |
} |
| 6519 |
function boundingRects(bar) { |
| 6520 |
const bounds = getBarBounds(bar); |
| 6521 |
const width = bounds.right - bounds.left; |
| 6522 |
const height = bounds.bottom - bounds.top; |
| 6523 |
const border = parseBorderWidth(bar, width / 2, height / 2); |
| 6524 |
const radius = parseBorderRadius(bar, width / 2, height / 2); |
| 6525 |
return { |
| 6526 |
outer: { |
| 6527 |
x: bounds.left, |
| 6528 |
y: bounds.top, |
| 6529 |
w: width, |
| 6530 |
h: height, |
| 6531 |
radius |
| 6532 |
}, |
| 6533 |
inner: { |
| 6534 |
x: bounds.left + border.l, |
| 6535 |
y: bounds.top + border.t, |
| 6536 |
w: width - border.l - border.r, |
| 6537 |
h: height - border.t - border.b, |
| 6538 |
radius: { |
| 6539 |
topLeft: Math.max(0, radius.topLeft - Math.max(border.t, border.l)), |
| 6540 |
topRight: Math.max(0, radius.topRight - Math.max(border.t, border.r)), |
| 6541 |
bottomLeft: Math.max(0, radius.bottomLeft - Math.max(border.b, border.l)), |
| 6542 |
bottomRight: Math.max(0, radius.bottomRight - Math.max(border.b, border.r)), |
| 6543 |
} |
| 6544 |
} |
| 6545 |
}; |
| 6546 |
} |
| 6547 |
function inRange(bar, x, y, useFinalPosition) { |
| 6548 |
const skipX = x === null; |
| 6549 |
const skipY = y === null; |
| 6550 |
const skipBoth = skipX && skipY; |
| 6551 |
const bounds = bar && !skipBoth && getBarBounds(bar, useFinalPosition); |
| 6552 |
return bounds |
| 6553 |
&& (skipX || x >= bounds.left && x <= bounds.right) |
| 6554 |
&& (skipY || y >= bounds.top && y <= bounds.bottom); |
| 6555 |
} |
| 6556 |
function hasRadius(radius) { |
| 6557 |
return radius.topLeft || radius.topRight || radius.bottomLeft || radius.bottomRight; |
| 6558 |
} |
| 6559 |
function addNormalRectPath(ctx, rect) { |
| 6560 |
ctx.rect(rect.x, rect.y, rect.w, rect.h); |
| 6561 |
} |
| 6562 |
class BarElement extends Element { |
| 6563 |
constructor(cfg) { |
| 6564 |
super(); |
| 6565 |
this.options = undefined; |
| 6566 |
this.horizontal = undefined; |
| 6567 |
this.base = undefined; |
| 6568 |
this.width = undefined; |
| 6569 |
this.height = undefined; |
| 6570 |
if (cfg) { |
| 6571 |
Object.assign(this, cfg); |
| 6572 |
} |
| 6573 |
} |
| 6574 |
draw(ctx) { |
| 6575 |
const options = this.options; |
| 6576 |
const {inner, outer} = boundingRects(this); |
| 6577 |
const addRectPath = hasRadius(outer.radius) ? addRoundedRectPath : addNormalRectPath; |
| 6578 |
ctx.save(); |
| 6579 |
if (outer.w !== inner.w || outer.h !== inner.h) { |
| 6580 |
ctx.beginPath(); |
| 6581 |
addRectPath(ctx, outer); |
| 6582 |
ctx.clip(); |
| 6583 |
addRectPath(ctx, inner); |
| 6584 |
ctx.fillStyle = options.borderColor; |
| 6585 |
ctx.fill('evenodd'); |
| 6586 |
} |
| 6587 |
ctx.beginPath(); |
| 6588 |
addRectPath(ctx, inner); |
| 6589 |
ctx.fillStyle = options.backgroundColor; |
| 6590 |
ctx.fill(); |
| 6591 |
ctx.restore(); |
| 6592 |
} |
| 6593 |
inRange(mouseX, mouseY, useFinalPosition) { |
| 6594 |
return inRange(this, mouseX, mouseY, useFinalPosition); |
| 6595 |
} |
| 6596 |
inXRange(mouseX, useFinalPosition) { |
| 6597 |
return inRange(this, mouseX, null, useFinalPosition); |
| 6598 |
} |
| 6599 |
inYRange(mouseY, useFinalPosition) { |
| 6600 |
return inRange(this, null, mouseY, useFinalPosition); |
| 6601 |
} |
| 6602 |
getCenterPoint(useFinalPosition) { |
| 6603 |
const {x, y, base, horizontal} = this.getProps(['x', 'y', 'base', 'horizontal'], useFinalPosition); |
| 6604 |
return { |
| 6605 |
x: horizontal ? (x + base) / 2 : x, |
| 6606 |
y: horizontal ? y : (y + base) / 2 |
| 6607 |
}; |
| 6608 |
} |
| 6609 |
getRange(axis) { |
| 6610 |
return axis === 'x' ? this.width / 2 : this.height / 2; |
| 6611 |
} |
| 6612 |
} |
| 6613 |
BarElement.id = 'bar'; |
| 6614 |
BarElement.defaults = { |
| 6615 |
borderSkipped: 'start', |
| 6616 |
borderWidth: 0, |
| 6617 |
borderRadius: 0, |
| 6618 |
enableBorderRadius: true, |
| 6619 |
pointStyle: undefined |
| 6620 |
}; |
| 6621 |
BarElement.defaultRoutes = { |
| 6622 |
backgroundColor: 'backgroundColor', |
| 6623 |
borderColor: 'borderColor' |
| 6624 |
}; |
| 6625 |
|
| 6626 |
var elements = /*#__PURE__*/Object.freeze({ |
| 6627 |
__proto__: null, |
| 6628 |
ArcElement: ArcElement, |
| 6629 |
LineElement: LineElement, |
| 6630 |
PointElement: PointElement, |
| 6631 |
BarElement: BarElement |
| 6632 |
}); |
| 6633 |
|
| 6634 |
function lttbDecimation(data, start, count, availableWidth, options) { |
| 6635 |
const samples = options.samples || availableWidth; |
| 6636 |
if (samples >= count) { |
| 6637 |
return data.slice(start, start + count); |
| 6638 |
} |
| 6639 |
const decimated = []; |
| 6640 |
const bucketWidth = (count - 2) / (samples - 2); |
| 6641 |
let sampledIndex = 0; |
| 6642 |
const endIndex = start + count - 1; |
| 6643 |
let a = start; |
| 6644 |
let i, maxAreaPoint, maxArea, area, nextA; |
| 6645 |
decimated[sampledIndex++] = data[a]; |
| 6646 |
for (i = 0; i < samples - 2; i++) { |
| 6647 |
let avgX = 0; |
| 6648 |
let avgY = 0; |
| 6649 |
let j; |
| 6650 |
const avgRangeStart = Math.floor((i + 1) * bucketWidth) + 1 + start; |
| 6651 |
const avgRangeEnd = Math.min(Math.floor((i + 2) * bucketWidth) + 1, count) + start; |
| 6652 |
const avgRangeLength = avgRangeEnd - avgRangeStart; |
| 6653 |
for (j = avgRangeStart; j < avgRangeEnd; j++) { |
| 6654 |
avgX += data[j].x; |
| 6655 |
avgY += data[j].y; |
| 6656 |
} |
| 6657 |
avgX /= avgRangeLength; |
| 6658 |
avgY /= avgRangeLength; |
| 6659 |
const rangeOffs = Math.floor(i * bucketWidth) + 1 + start; |
| 6660 |
const rangeTo = Math.floor((i + 1) * bucketWidth) + 1 + start; |
| 6661 |
const {x: pointAx, y: pointAy} = data[a]; |
| 6662 |
maxArea = area = -1; |
| 6663 |
for (j = rangeOffs; j < rangeTo; j++) { |
| 6664 |
area = 0.5 * Math.abs( |
| 6665 |
(pointAx - avgX) * (data[j].y - pointAy) - |
| 6666 |
(pointAx - data[j].x) * (avgY - pointAy) |
| 6667 |
); |
| 6668 |
if (area > maxArea) { |
| 6669 |
maxArea = area; |
| 6670 |
maxAreaPoint = data[j]; |
| 6671 |
nextA = j; |
| 6672 |
} |
| 6673 |
} |
| 6674 |
decimated[sampledIndex++] = maxAreaPoint; |
| 6675 |
a = nextA; |
| 6676 |
} |
| 6677 |
decimated[sampledIndex++] = data[endIndex]; |
| 6678 |
return decimated; |
| 6679 |
} |
| 6680 |
function minMaxDecimation(data, start, count, availableWidth) { |
| 6681 |
let avgX = 0; |
| 6682 |
let countX = 0; |
| 6683 |
let i, point, x, y, prevX, minIndex, maxIndex, startIndex, minY, maxY; |
| 6684 |
const decimated = []; |
| 6685 |
const endIndex = start + count - 1; |
| 6686 |
const xMin = data[start].x; |
| 6687 |
const xMax = data[endIndex].x; |
| 6688 |
const dx = xMax - xMin; |
| 6689 |
for (i = start; i < start + count; ++i) { |
| 6690 |
point = data[i]; |
| 6691 |
x = (point.x - xMin) / dx * availableWidth; |
| 6692 |
y = point.y; |
| 6693 |
const truncX = x | 0; |
| 6694 |
if (truncX === prevX) { |
| 6695 |
if (y < minY) { |
| 6696 |
minY = y; |
| 6697 |
minIndex = i; |
| 6698 |
} else if (y > maxY) { |
| 6699 |
maxY = y; |
| 6700 |
maxIndex = i; |
| 6701 |
} |
| 6702 |
avgX = (countX * avgX + point.x) / ++countX; |
| 6703 |
} else { |
| 6704 |
const lastIndex = i - 1; |
| 6705 |
if (!isNullOrUndef(minIndex) && !isNullOrUndef(maxIndex)) { |
| 6706 |
const intermediateIndex1 = Math.min(minIndex, maxIndex); |
| 6707 |
const intermediateIndex2 = Math.max(minIndex, maxIndex); |
| 6708 |
if (intermediateIndex1 !== startIndex && intermediateIndex1 !== lastIndex) { |
| 6709 |
decimated.push({ |
| 6710 |
...data[intermediateIndex1], |
| 6711 |
x: avgX, |
| 6712 |
}); |
| 6713 |
} |
| 6714 |
if (intermediateIndex2 !== startIndex && intermediateIndex2 !== lastIndex) { |
| 6715 |
decimated.push({ |
| 6716 |
...data[intermediateIndex2], |
| 6717 |
x: avgX |
| 6718 |
}); |
| 6719 |
} |
| 6720 |
} |
| 6721 |
if (i > 0 && lastIndex !== startIndex) { |
| 6722 |
decimated.push(data[lastIndex]); |
| 6723 |
} |
| 6724 |
decimated.push(point); |
| 6725 |
prevX = truncX; |
| 6726 |
countX = 0; |
| 6727 |
minY = maxY = y; |
| 6728 |
minIndex = maxIndex = startIndex = i; |
| 6729 |
} |
| 6730 |
} |
| 6731 |
return decimated; |
| 6732 |
} |
| 6733 |
function cleanDecimatedDataset(dataset) { |
| 6734 |
if (dataset._decimated) { |
| 6735 |
const data = dataset._data; |
| 6736 |
delete dataset._decimated; |
| 6737 |
delete dataset._data; |
| 6738 |
Object.defineProperty(dataset, 'data', {value: data}); |
| 6739 |
} |
| 6740 |
} |
| 6741 |
function cleanDecimatedData(chart) { |
| 6742 |
chart.data.datasets.forEach((dataset) => { |
| 6743 |
cleanDecimatedDataset(dataset); |
| 6744 |
}); |
| 6745 |
} |
| 6746 |
function getStartAndCountOfVisiblePointsSimplified(meta, points) { |
| 6747 |
const pointCount = points.length; |
| 6748 |
let start = 0; |
| 6749 |
let count; |
| 6750 |
const {iScale} = meta; |
| 6751 |
const {min, max, minDefined, maxDefined} = iScale.getUserBounds(); |
| 6752 |
if (minDefined) { |
| 6753 |
start = _limitValue(_lookupByKey(points, iScale.axis, min).lo, 0, pointCount - 1); |
| 6754 |
} |
| 6755 |
if (maxDefined) { |
| 6756 |
count = _limitValue(_lookupByKey(points, iScale.axis, max).hi + 1, start, pointCount) - start; |
| 6757 |
} else { |
| 6758 |
count = pointCount - start; |
| 6759 |
} |
| 6760 |
return {start, count}; |
| 6761 |
} |
| 6762 |
var plugin_decimation = { |
| 6763 |
id: 'decimation', |
| 6764 |
defaults: { |
| 6765 |
algorithm: 'min-max', |
| 6766 |
enabled: false, |
| 6767 |
}, |
| 6768 |
beforeElementsUpdate: (chart, args, options) => { |
| 6769 |
if (!options.enabled) { |
| 6770 |
cleanDecimatedData(chart); |
| 6771 |
return; |
| 6772 |
} |
| 6773 |
const availableWidth = chart.width; |
| 6774 |
chart.data.datasets.forEach((dataset, datasetIndex) => { |
| 6775 |
const {_data, indexAxis} = dataset; |
| 6776 |
const meta = chart.getDatasetMeta(datasetIndex); |
| 6777 |
const data = _data || dataset.data; |
| 6778 |
if (resolve([indexAxis, chart.options.indexAxis]) === 'y') { |
| 6779 |
return; |
| 6780 |
} |
| 6781 |
if (meta.type !== 'line') { |
| 6782 |
return; |
| 6783 |
} |
| 6784 |
const xAxis = chart.scales[meta.xAxisID]; |
| 6785 |
if (xAxis.type !== 'linear' && xAxis.type !== 'time') { |
| 6786 |
return; |
| 6787 |
} |
| 6788 |
if (chart.options.parsing) { |
| 6789 |
return; |
| 6790 |
} |
| 6791 |
let {start, count} = getStartAndCountOfVisiblePointsSimplified(meta, data); |
| 6792 |
if (count <= 4 * availableWidth) { |
| 6793 |
cleanDecimatedDataset(dataset); |
| 6794 |
return; |
| 6795 |
} |
| 6796 |
if (isNullOrUndef(_data)) { |
| 6797 |
dataset._data = data; |
| 6798 |
delete dataset.data; |
| 6799 |
Object.defineProperty(dataset, 'data', { |
| 6800 |
configurable: true, |
| 6801 |
enumerable: true, |
| 6802 |
get: function() { |
| 6803 |
return this._decimated; |
| 6804 |
}, |
| 6805 |
set: function(d) { |
| 6806 |
this._data = d; |
| 6807 |
} |
| 6808 |
}); |
| 6809 |
} |
| 6810 |
let decimated; |
| 6811 |
switch (options.algorithm) { |
| 6812 |
case 'lttb': |
| 6813 |
decimated = lttbDecimation(data, start, count, availableWidth, options); |
| 6814 |
break; |
| 6815 |
case 'min-max': |
| 6816 |
decimated = minMaxDecimation(data, start, count, availableWidth); |
| 6817 |
break; |
| 6818 |
default: |
| 6819 |
throw new Error(`Unsupported decimation algorithm '${options.algorithm}'`); |
| 6820 |
} |
| 6821 |
dataset._decimated = decimated; |
| 6822 |
}); |
| 6823 |
}, |
| 6824 |
destroy(chart) { |
| 6825 |
cleanDecimatedData(chart); |
| 6826 |
} |
| 6827 |
}; |
| 6828 |
|
| 6829 |
function getLineByIndex(chart, index) { |
| 6830 |
const meta = chart.getDatasetMeta(index); |
| 6831 |
const visible = meta && chart.isDatasetVisible(index); |
| 6832 |
return visible ? meta.dataset : null; |
| 6833 |
} |
| 6834 |
function parseFillOption(line) { |
| 6835 |
const options = line.options; |
| 6836 |
const fillOption = options.fill; |
| 6837 |
let fill = valueOrDefault(fillOption && fillOption.target, fillOption); |
| 6838 |
if (fill === undefined) { |
| 6839 |
fill = !!options.backgroundColor; |
| 6840 |
} |
| 6841 |
if (fill === false || fill === null) { |
| 6842 |
return false; |
| 6843 |
} |
| 6844 |
if (fill === true) { |
| 6845 |
return 'origin'; |
| 6846 |
} |
| 6847 |
return fill; |
| 6848 |
} |
| 6849 |
function decodeFill(line, index, count) { |
| 6850 |
const fill = parseFillOption(line); |
| 6851 |
if (isObject(fill)) { |
| 6852 |
return isNaN(fill.value) ? false : fill; |
| 6853 |
} |
| 6854 |
let target = parseFloat(fill); |
| 6855 |
if (isNumberFinite(target) && Math.floor(target) === target) { |
| 6856 |
if (fill[0] === '-' || fill[0] === '+') { |
| 6857 |
target = index + target; |
| 6858 |
} |
| 6859 |
if (target === index || target < 0 || target >= count) { |
| 6860 |
return false; |
| 6861 |
} |
| 6862 |
return target; |
| 6863 |
} |
| 6864 |
return ['origin', 'start', 'end', 'stack'].indexOf(fill) >= 0 && fill; |
| 6865 |
} |
| 6866 |
function computeLinearBoundary(source) { |
| 6867 |
const {scale = {}, fill} = source; |
| 6868 |
let target = null; |
| 6869 |
let horizontal; |
| 6870 |
if (fill === 'start') { |
| 6871 |
target = scale.bottom; |
| 6872 |
} else if (fill === 'end') { |
| 6873 |
target = scale.top; |
| 6874 |
} else if (isObject(fill)) { |
| 6875 |
target = scale.getPixelForValue(fill.value); |
| 6876 |
} else if (scale.getBasePixel) { |
| 6877 |
target = scale.getBasePixel(); |
| 6878 |
} |
| 6879 |
if (isNumberFinite(target)) { |
| 6880 |
horizontal = scale.isHorizontal(); |
| 6881 |
return { |
| 6882 |
x: horizontal ? target : null, |
| 6883 |
y: horizontal ? null : target |
| 6884 |
}; |
| 6885 |
} |
| 6886 |
return null; |
| 6887 |
} |
| 6888 |
class simpleArc { |
| 6889 |
constructor(opts) { |
| 6890 |
this.x = opts.x; |
| 6891 |
this.y = opts.y; |
| 6892 |
this.radius = opts.radius; |
| 6893 |
} |
| 6894 |
pathSegment(ctx, bounds, opts) { |
| 6895 |
const {x, y, radius} = this; |
| 6896 |
bounds = bounds || {start: 0, end: TAU}; |
| 6897 |
ctx.arc(x, y, radius, bounds.end, bounds.start, true); |
| 6898 |
return !opts.bounds; |
| 6899 |
} |
| 6900 |
interpolate(point) { |
| 6901 |
const {x, y, radius} = this; |
| 6902 |
const angle = point.angle; |
| 6903 |
return { |
| 6904 |
x: x + Math.cos(angle) * radius, |
| 6905 |
y: y + Math.sin(angle) * radius, |
| 6906 |
angle |
| 6907 |
}; |
| 6908 |
} |
| 6909 |
} |
| 6910 |
function computeCircularBoundary(source) { |
| 6911 |
const {scale, fill} = source; |
| 6912 |
const options = scale.options; |
| 6913 |
const length = scale.getLabels().length; |
| 6914 |
const target = []; |
| 6915 |
const start = options.reverse ? scale.max : scale.min; |
| 6916 |
const end = options.reverse ? scale.min : scale.max; |
| 6917 |
let i, center, value; |
| 6918 |
if (fill === 'start') { |
| 6919 |
value = start; |
| 6920 |
} else if (fill === 'end') { |
| 6921 |
value = end; |
| 6922 |
} else if (isObject(fill)) { |
| 6923 |
value = fill.value; |
| 6924 |
} else { |
| 6925 |
value = scale.getBaseValue(); |
| 6926 |
} |
| 6927 |
if (options.grid.circular) { |
| 6928 |
center = scale.getPointPositionForValue(0, start); |
| 6929 |
return new simpleArc({ |
| 6930 |
x: center.x, |
| 6931 |
y: center.y, |
| 6932 |
radius: scale.getDistanceFromCenterForValue(value) |
| 6933 |
}); |
| 6934 |
} |
| 6935 |
for (i = 0; i < length; ++i) { |
| 6936 |
target.push(scale.getPointPositionForValue(i, value)); |
| 6937 |
} |
| 6938 |
return target; |
| 6939 |
} |
| 6940 |
function computeBoundary(source) { |
| 6941 |
const scale = source.scale || {}; |
| 6942 |
if (scale.getPointPositionForValue) { |
| 6943 |
return computeCircularBoundary(source); |
| 6944 |
} |
| 6945 |
return computeLinearBoundary(source); |
| 6946 |
} |
| 6947 |
function pointsFromSegments(boundary, line) { |
| 6948 |
const {x = null, y = null} = boundary || {}; |
| 6949 |
const linePoints = line.points; |
| 6950 |
const points = []; |
| 6951 |
line.segments.forEach((segment) => { |
| 6952 |
const first = linePoints[segment.start]; |
| 6953 |
const last = linePoints[segment.end]; |
| 6954 |
if (y !== null) { |
| 6955 |
points.push({x: first.x, y}); |
| 6956 |
points.push({x: last.x, y}); |
| 6957 |
} else if (x !== null) { |
| 6958 |
points.push({x, y: first.y}); |
| 6959 |
points.push({x, y: last.y}); |
| 6960 |
} |
| 6961 |
}); |
| 6962 |
return points; |
| 6963 |
} |
| 6964 |
function buildStackLine(source) { |
| 6965 |
const {chart, scale, index, line} = source; |
| 6966 |
const points = []; |
| 6967 |
const segments = line.segments; |
| 6968 |
const sourcePoints = line.points; |
| 6969 |
const linesBelow = getLinesBelow(chart, index); |
| 6970 |
linesBelow.push(createBoundaryLine({x: null, y: scale.bottom}, line)); |
| 6971 |
for (let i = 0; i < segments.length; i++) { |
| 6972 |
const segment = segments[i]; |
| 6973 |
for (let j = segment.start; j <= segment.end; j++) { |
| 6974 |
addPointsBelow(points, sourcePoints[j], linesBelow); |
| 6975 |
} |
| 6976 |
} |
| 6977 |
return new LineElement({points, options: {}}); |
| 6978 |
} |
| 6979 |
const isLineAndNotInHideAnimation = (meta) => meta.type === 'line' && !meta.hidden; |
| 6980 |
function getLinesBelow(chart, index) { |
| 6981 |
const below = []; |
| 6982 |
const metas = chart.getSortedVisibleDatasetMetas(); |
| 6983 |
for (let i = 0; i < metas.length; i++) { |
| 6984 |
const meta = metas[i]; |
| 6985 |
if (meta.index === index) { |
| 6986 |
break; |
| 6987 |
} |
| 6988 |
if (isLineAndNotInHideAnimation(meta)) { |
| 6989 |
below.unshift(meta.dataset); |
| 6990 |
} |
| 6991 |
} |
| 6992 |
return below; |
| 6993 |
} |
| 6994 |
function addPointsBelow(points, sourcePoint, linesBelow) { |
| 6995 |
const postponed = []; |
| 6996 |
for (let j = 0; j < linesBelow.length; j++) { |
| 6997 |
const line = linesBelow[j]; |
| 6998 |
const {first, last, point} = findPoint(line, sourcePoint, 'x'); |
| 6999 |
if (!point || (first && last)) { |
| 7000 |
continue; |
| 7001 |
} |
| 7002 |
if (first) { |
| 7003 |
postponed.unshift(point); |
| 7004 |
} else { |
| 7005 |
points.push(point); |
| 7006 |
if (!last) { |
| 7007 |
break; |
| 7008 |
} |
| 7009 |
} |
| 7010 |
} |
| 7011 |
points.push(...postponed); |
| 7012 |
} |
| 7013 |
function findPoint(line, sourcePoint, property) { |
| 7014 |
const point = line.interpolate(sourcePoint, property); |
| 7015 |
if (!point) { |
| 7016 |
return {}; |
| 7017 |
} |
| 7018 |
const pointValue = point[property]; |
| 7019 |
const segments = line.segments; |
| 7020 |
const linePoints = line.points; |
| 7021 |
let first = false; |
| 7022 |
let last = false; |
| 7023 |
for (let i = 0; i < segments.length; i++) { |
| 7024 |
const segment = segments[i]; |
| 7025 |
const firstValue = linePoints[segment.start][property]; |
| 7026 |
const lastValue = linePoints[segment.end][property]; |
| 7027 |
if (pointValue >= firstValue && pointValue <= lastValue) { |
| 7028 |
first = pointValue === firstValue; |
| 7029 |
last = pointValue === lastValue; |
| 7030 |
break; |
| 7031 |
} |
| 7032 |
} |
| 7033 |
return {first, last, point}; |
| 7034 |
} |
| 7035 |
function getTarget(source) { |
| 7036 |
const {chart, fill, line} = source; |
| 7037 |
if (isNumberFinite(fill)) { |
| 7038 |
return getLineByIndex(chart, fill); |
| 7039 |
} |
| 7040 |
if (fill === 'stack') { |
| 7041 |
return buildStackLine(source); |
| 7042 |
} |
| 7043 |
const boundary = computeBoundary(source); |
| 7044 |
if (boundary instanceof simpleArc) { |
| 7045 |
return boundary; |
| 7046 |
} |
| 7047 |
return createBoundaryLine(boundary, line); |
| 7048 |
} |
| 7049 |
function createBoundaryLine(boundary, line) { |
| 7050 |
let points = []; |
| 7051 |
let _loop = false; |
| 7052 |
if (isArray(boundary)) { |
| 7053 |
_loop = true; |
| 7054 |
points = boundary; |
| 7055 |
} else { |
| 7056 |
points = pointsFromSegments(boundary, line); |
| 7057 |
} |
| 7058 |
return points.length ? new LineElement({ |
| 7059 |
points, |
| 7060 |
options: {tension: 0}, |
| 7061 |
_loop, |
| 7062 |
_fullLoop: _loop |
| 7063 |
}) : null; |
| 7064 |
} |
| 7065 |
function resolveTarget(sources, index, propagate) { |
| 7066 |
const source = sources[index]; |
| 7067 |
let fill = source.fill; |
| 7068 |
const visited = [index]; |
| 7069 |
let target; |
| 7070 |
if (!propagate) { |
| 7071 |
return fill; |
| 7072 |
} |
| 7073 |
while (fill !== false && visited.indexOf(fill) === -1) { |
| 7074 |
if (!isNumberFinite(fill)) { |
| 7075 |
return fill; |
| 7076 |
} |
| 7077 |
target = sources[fill]; |
| 7078 |
if (!target) { |
| 7079 |
return false; |
| 7080 |
} |
| 7081 |
if (target.visible) { |
| 7082 |
return fill; |
| 7083 |
} |
| 7084 |
visited.push(fill); |
| 7085 |
fill = target.fill; |
| 7086 |
} |
| 7087 |
return false; |
| 7088 |
} |
| 7089 |
function _clip(ctx, target, clipY) { |
| 7090 |
ctx.beginPath(); |
| 7091 |
target.path(ctx); |
| 7092 |
ctx.lineTo(target.last().x, clipY); |
| 7093 |
ctx.lineTo(target.first().x, clipY); |
| 7094 |
ctx.closePath(); |
| 7095 |
ctx.clip(); |
| 7096 |
} |
| 7097 |
function getBounds(property, first, last, loop) { |
| 7098 |
if (loop) { |
| 7099 |
return; |
| 7100 |
} |
| 7101 |
let start = first[property]; |
| 7102 |
let end = last[property]; |
| 7103 |
if (property === 'angle') { |
| 7104 |
start = _normalizeAngle(start); |
| 7105 |
end = _normalizeAngle(end); |
| 7106 |
} |
| 7107 |
return {property, start, end}; |
| 7108 |
} |
| 7109 |
function _getEdge(a, b, prop, fn) { |
| 7110 |
if (a && b) { |
| 7111 |
return fn(a[prop], b[prop]); |
| 7112 |
} |
| 7113 |
return a ? a[prop] : b ? b[prop] : 0; |
| 7114 |
} |
| 7115 |
function _segments(line, target, property) { |
| 7116 |
const segments = line.segments; |
| 7117 |
const points = line.points; |
| 7118 |
const tpoints = target.points; |
| 7119 |
const parts = []; |
| 7120 |
for (const segment of segments) { |
| 7121 |
const bounds = getBounds(property, points[segment.start], points[segment.end], segment.loop); |
| 7122 |
if (!target.segments) { |
| 7123 |
parts.push({ |
| 7124 |
source: segment, |
| 7125 |
target: bounds, |
| 7126 |
start: points[segment.start], |
| 7127 |
end: points[segment.end] |
| 7128 |
}); |
| 7129 |
continue; |
| 7130 |
} |
| 7131 |
const targetSegments = _boundSegments(target, bounds); |
| 7132 |
for (const tgt of targetSegments) { |
| 7133 |
const subBounds = getBounds(property, tpoints[tgt.start], tpoints[tgt.end], tgt.loop); |
| 7134 |
const fillSources = _boundSegment(segment, points, subBounds); |
| 7135 |
for (const fillSource of fillSources) { |
| 7136 |
parts.push({ |
| 7137 |
source: fillSource, |
| 7138 |
target: tgt, |
| 7139 |
start: { |
| 7140 |
[property]: _getEdge(bounds, subBounds, 'start', Math.max) |
| 7141 |
}, |
| 7142 |
end: { |
| 7143 |
[property]: _getEdge(bounds, subBounds, 'end', Math.min) |
| 7144 |
} |
| 7145 |
}); |
| 7146 |
} |
| 7147 |
} |
| 7148 |
} |
| 7149 |
return parts; |
| 7150 |
} |
| 7151 |
function clipBounds(ctx, scale, bounds) { |
| 7152 |
const {top, bottom} = scale.chart.chartArea; |
| 7153 |
const {property, start, end} = bounds || {}; |
| 7154 |
if (property === 'x') { |
| 7155 |
ctx.beginPath(); |
| 7156 |
ctx.rect(start, top, end - start, bottom - top); |
| 7157 |
ctx.clip(); |
| 7158 |
} |
| 7159 |
} |
| 7160 |
function interpolatedLineTo(ctx, target, point, property) { |
| 7161 |
const interpolatedPoint = target.interpolate(point, property); |
| 7162 |
if (interpolatedPoint) { |
| 7163 |
ctx.lineTo(interpolatedPoint.x, interpolatedPoint.y); |
| 7164 |
} |
| 7165 |
} |
| 7166 |
function _fill(ctx, cfg) { |
| 7167 |
const {line, target, property, color, scale} = cfg; |
| 7168 |
const segments = _segments(line, target, property); |
| 7169 |
for (const {source: src, target: tgt, start, end} of segments) { |
| 7170 |
const {style: {backgroundColor = color} = {}} = src; |
| 7171 |
ctx.save(); |
| 7172 |
ctx.fillStyle = backgroundColor; |
| 7173 |
clipBounds(ctx, scale, getBounds(property, start, end)); |
| 7174 |
ctx.beginPath(); |
| 7175 |
const lineLoop = !!line.pathSegment(ctx, src); |
| 7176 |
if (lineLoop) { |
| 7177 |
ctx.closePath(); |
| 7178 |
} else { |
| 7179 |
interpolatedLineTo(ctx, target, end, property); |
| 7180 |
} |
| 7181 |
const targetLoop = !!target.pathSegment(ctx, tgt, {move: lineLoop, reverse: true}); |
| 7182 |
const loop = lineLoop && targetLoop; |
| 7183 |
if (!loop) { |
| 7184 |
interpolatedLineTo(ctx, target, start, property); |
| 7185 |
} |
| 7186 |
ctx.closePath(); |
| 7187 |
ctx.fill(loop ? 'evenodd' : 'nonzero'); |
| 7188 |
ctx.restore(); |
| 7189 |
} |
| 7190 |
} |
| 7191 |
function doFill(ctx, cfg) { |
| 7192 |
const {line, target, above, below, area, scale} = cfg; |
| 7193 |
const property = line._loop ? 'angle' : cfg.axis; |
| 7194 |
ctx.save(); |
| 7195 |
if (property === 'x' && below !== above) { |
| 7196 |
_clip(ctx, target, area.top); |
| 7197 |
_fill(ctx, {line, target, color: above, scale, property}); |
| 7198 |
ctx.restore(); |
| 7199 |
ctx.save(); |
| 7200 |
_clip(ctx, target, area.bottom); |
| 7201 |
} |
| 7202 |
_fill(ctx, {line, target, color: below, scale, property}); |
| 7203 |
ctx.restore(); |
| 7204 |
} |
| 7205 |
function drawfill(ctx, source, area) { |
| 7206 |
const target = getTarget(source); |
| 7207 |
const {line, scale, axis} = source; |
| 7208 |
const lineOpts = line.options; |
| 7209 |
const fillOption = lineOpts.fill; |
| 7210 |
const color = lineOpts.backgroundColor; |
| 7211 |
const {above = color, below = color} = fillOption || {}; |
| 7212 |
if (target && line.points.length) { |
| 7213 |
clipArea(ctx, area); |
| 7214 |
doFill(ctx, {line, target, above, below, area, scale, axis}); |
| 7215 |
unclipArea(ctx); |
| 7216 |
} |
| 7217 |
} |
| 7218 |
var plugin_filler = { |
| 7219 |
id: 'filler', |
| 7220 |
afterDatasetsUpdate(chart, _args, options) { |
| 7221 |
const count = (chart.data.datasets || []).length; |
| 7222 |
const sources = []; |
| 7223 |
let meta, i, line, source; |
| 7224 |
for (i = 0; i < count; ++i) { |
| 7225 |
meta = chart.getDatasetMeta(i); |
| 7226 |
line = meta.dataset; |
| 7227 |
source = null; |
| 7228 |
if (line && line.options && line instanceof LineElement) { |
| 7229 |
source = { |
| 7230 |
visible: chart.isDatasetVisible(i), |
| 7231 |
index: i, |
| 7232 |
fill: decodeFill(line, i, count), |
| 7233 |
chart, |
| 7234 |
axis: meta.controller.options.indexAxis, |
| 7235 |
scale: meta.vScale, |
| 7236 |
line, |
| 7237 |
}; |
| 7238 |
} |
| 7239 |
meta.$filler = source; |
| 7240 |
sources.push(source); |
| 7241 |
} |
| 7242 |
for (i = 0; i < count; ++i) { |
| 7243 |
source = sources[i]; |
| 7244 |
if (!source || source.fill === false) { |
| 7245 |
continue; |
| 7246 |
} |
| 7247 |
source.fill = resolveTarget(sources, i, options.propagate); |
| 7248 |
} |
| 7249 |
}, |
| 7250 |
beforeDraw(chart, _args, options) { |
| 7251 |
const draw = options.drawTime === 'beforeDraw'; |
| 7252 |
const metasets = chart.getSortedVisibleDatasetMetas(); |
| 7253 |
const area = chart.chartArea; |
| 7254 |
for (let i = metasets.length - 1; i >= 0; --i) { |
| 7255 |
const source = metasets[i].$filler; |
| 7256 |
if (!source) { |
| 7257 |
continue; |
| 7258 |
} |
| 7259 |
source.line.updateControlPoints(area); |
| 7260 |
if (draw) { |
| 7261 |
drawfill(chart.ctx, source, area); |
| 7262 |
} |
| 7263 |
} |
| 7264 |
}, |
| 7265 |
beforeDatasetsDraw(chart, _args, options) { |
| 7266 |
if (options.drawTime !== 'beforeDatasetsDraw') { |
| 7267 |
return; |
| 7268 |
} |
| 7269 |
const metasets = chart.getSortedVisibleDatasetMetas(); |
| 7270 |
for (let i = metasets.length - 1; i >= 0; --i) { |
| 7271 |
const source = metasets[i].$filler; |
| 7272 |
if (source) { |
| 7273 |
drawfill(chart.ctx, source, chart.chartArea); |
| 7274 |
} |
| 7275 |
} |
| 7276 |
}, |
| 7277 |
beforeDatasetDraw(chart, args, options) { |
| 7278 |
const source = args.meta.$filler; |
| 7279 |
if (!source || source.fill === false || options.drawTime !== 'beforeDatasetDraw') { |
| 7280 |
return; |
| 7281 |
} |
| 7282 |
drawfill(chart.ctx, source, chart.chartArea); |
| 7283 |
}, |
| 7284 |
defaults: { |
| 7285 |
propagate: true, |
| 7286 |
drawTime: 'beforeDatasetDraw' |
| 7287 |
} |
| 7288 |
}; |
| 7289 |
|
| 7290 |
const getBoxSize = (labelOpts, fontSize) => { |
| 7291 |
let {boxHeight = fontSize, boxWidth = fontSize} = labelOpts; |
| 7292 |
if (labelOpts.usePointStyle) { |
| 7293 |
boxHeight = Math.min(boxHeight, fontSize); |
| 7294 |
boxWidth = Math.min(boxWidth, fontSize); |
| 7295 |
} |
| 7296 |
return { |
| 7297 |
boxWidth, |
| 7298 |
boxHeight, |
| 7299 |
itemHeight: Math.max(fontSize, boxHeight) |
| 7300 |
}; |
| 7301 |
}; |
| 7302 |
const itemsEqual = (a, b) => a !== null && b !== null && a.datasetIndex === b.datasetIndex && a.index === b.index; |
| 7303 |
class Legend extends Element { |
| 7304 |
constructor(config) { |
| 7305 |
super(); |
| 7306 |
this._added = false; |
| 7307 |
this.legendHitBoxes = []; |
| 7308 |
this._hoveredItem = null; |
| 7309 |
this.doughnutMode = false; |
| 7310 |
this.chart = config.chart; |
| 7311 |
this.options = config.options; |
| 7312 |
this.ctx = config.ctx; |
| 7313 |
this.legendItems = undefined; |
| 7314 |
this.columnSizes = undefined; |
| 7315 |
this.lineWidths = undefined; |
| 7316 |
this.maxHeight = undefined; |
| 7317 |
this.maxWidth = undefined; |
| 7318 |
this.top = undefined; |
| 7319 |
this.bottom = undefined; |
| 7320 |
this.left = undefined; |
| 7321 |
this.right = undefined; |
| 7322 |
this.height = undefined; |
| 7323 |
this.width = undefined; |
| 7324 |
this._margins = undefined; |
| 7325 |
this.position = undefined; |
| 7326 |
this.weight = undefined; |
| 7327 |
this.fullSize = undefined; |
| 7328 |
} |
| 7329 |
update(maxWidth, maxHeight, margins) { |
| 7330 |
const me = this; |
| 7331 |
me.maxWidth = maxWidth; |
| 7332 |
me.maxHeight = maxHeight; |
| 7333 |
me._margins = margins; |
| 7334 |
me.setDimensions(); |
| 7335 |
me.buildLabels(); |
| 7336 |
me.fit(); |
| 7337 |
} |
| 7338 |
setDimensions() { |
| 7339 |
const me = this; |
| 7340 |
if (me.isHorizontal()) { |
| 7341 |
me.width = me.maxWidth; |
| 7342 |
me.left = 0; |
| 7343 |
me.right = me.width; |
| 7344 |
} else { |
| 7345 |
me.height = me.maxHeight; |
| 7346 |
me.top = 0; |
| 7347 |
me.bottom = me.height; |
| 7348 |
} |
| 7349 |
} |
| 7350 |
buildLabels() { |
| 7351 |
const me = this; |
| 7352 |
const labelOpts = me.options.labels || {}; |
| 7353 |
let legendItems = callback(labelOpts.generateLabels, [me.chart], me) || []; |
| 7354 |
if (labelOpts.filter) { |
| 7355 |
legendItems = legendItems.filter((item) => labelOpts.filter(item, me.chart.data)); |
| 7356 |
} |
| 7357 |
if (labelOpts.sort) { |
| 7358 |
legendItems = legendItems.sort((a, b) => labelOpts.sort(a, b, me.chart.data)); |
| 7359 |
} |
| 7360 |
if (me.options.reverse) { |
| 7361 |
legendItems.reverse(); |
| 7362 |
} |
| 7363 |
me.legendItems = legendItems; |
| 7364 |
} |
| 7365 |
fit() { |
| 7366 |
const me = this; |
| 7367 |
const {options, ctx} = me; |
| 7368 |
if (!options.display) { |
| 7369 |
me.width = me.height = 0; |
| 7370 |
return; |
| 7371 |
} |
| 7372 |
const labelOpts = options.labels; |
| 7373 |
const labelFont = toFont(labelOpts.font); |
| 7374 |
const fontSize = labelFont.size; |
| 7375 |
const titleHeight = me._computeTitleHeight(); |
| 7376 |
const {boxWidth, itemHeight} = getBoxSize(labelOpts, fontSize); |
| 7377 |
let width, height; |
| 7378 |
ctx.font = labelFont.string; |
| 7379 |
if (me.isHorizontal()) { |
| 7380 |
width = me.maxWidth; |
| 7381 |
height = me._fitRows(titleHeight, fontSize, boxWidth, itemHeight) + 10; |
| 7382 |
} else { |
| 7383 |
height = me.maxHeight; |
| 7384 |
width = me._fitCols(titleHeight, fontSize, boxWidth, itemHeight) + 10; |
| 7385 |
} |
| 7386 |
me.width = Math.min(width, options.maxWidth || me.maxWidth); |
| 7387 |
me.height = Math.min(height, options.maxHeight || me.maxHeight); |
| 7388 |
} |
| 7389 |
_fitRows(titleHeight, fontSize, boxWidth, itemHeight) { |
| 7390 |
const me = this; |
| 7391 |
const {ctx, maxWidth, options: {labels: {padding}}} = me; |
| 7392 |
const hitboxes = me.legendHitBoxes = []; |
| 7393 |
const lineWidths = me.lineWidths = [0]; |
| 7394 |
const lineHeight = itemHeight + padding; |
| 7395 |
let totalHeight = titleHeight; |
| 7396 |
ctx.textAlign = 'left'; |
| 7397 |
ctx.textBaseline = 'middle'; |
| 7398 |
let row = -1; |
| 7399 |
let top = -lineHeight; |
| 7400 |
me.legendItems.forEach((legendItem, i) => { |
| 7401 |
const itemWidth = boxWidth + (fontSize / 2) + ctx.measureText(legendItem.text).width; |
| 7402 |
if (i === 0 || lineWidths[lineWidths.length - 1] + itemWidth + 2 * padding > maxWidth) { |
| 7403 |
totalHeight += lineHeight; |
| 7404 |
lineWidths[lineWidths.length - (i > 0 ? 0 : 1)] = 0; |
| 7405 |
top += lineHeight; |
| 7406 |
row++; |
| 7407 |
} |
| 7408 |
hitboxes[i] = {left: 0, top, row, width: itemWidth, height: itemHeight}; |
| 7409 |
lineWidths[lineWidths.length - 1] += itemWidth + padding; |
| 7410 |
}); |
| 7411 |
return totalHeight; |
| 7412 |
} |
| 7413 |
_fitCols(titleHeight, fontSize, boxWidth, itemHeight) { |
| 7414 |
const me = this; |
| 7415 |
const {ctx, maxHeight, options: {labels: {padding}}} = me; |
| 7416 |
const hitboxes = me.legendHitBoxes = []; |
| 7417 |
const columnSizes = me.columnSizes = []; |
| 7418 |
const heightLimit = maxHeight - titleHeight; |
| 7419 |
let totalWidth = padding; |
| 7420 |
let currentColWidth = 0; |
| 7421 |
let currentColHeight = 0; |
| 7422 |
let left = 0; |
| 7423 |
let top = 0; |
| 7424 |
let col = 0; |
| 7425 |
me.legendItems.forEach((legendItem, i) => { |
| 7426 |
const itemWidth = boxWidth + (fontSize / 2) + ctx.measureText(legendItem.text).width; |
| 7427 |
if (i > 0 && currentColHeight + fontSize + 2 * padding > heightLimit) { |
| 7428 |
totalWidth += currentColWidth + padding; |
| 7429 |
columnSizes.push({width: currentColWidth, height: currentColHeight}); |
| 7430 |
left += currentColWidth + padding; |
| 7431 |
col++; |
| 7432 |
top = 0; |
| 7433 |
currentColWidth = currentColHeight = 0; |
| 7434 |
} |
| 7435 |
currentColWidth = Math.max(currentColWidth, itemWidth); |
| 7436 |
currentColHeight += fontSize + padding; |
| 7437 |
hitboxes[i] = {left, top, col, width: itemWidth, height: itemHeight}; |
| 7438 |
top += itemHeight + padding; |
| 7439 |
}); |
| 7440 |
totalWidth += currentColWidth; |
| 7441 |
columnSizes.push({width: currentColWidth, height: currentColHeight}); |
| 7442 |
return totalWidth; |
| 7443 |
} |
| 7444 |
adjustHitBoxes() { |
| 7445 |
const me = this; |
| 7446 |
if (!me.options.display) { |
| 7447 |
return; |
| 7448 |
} |
| 7449 |
const titleHeight = me._computeTitleHeight(); |
| 7450 |
const {legendHitBoxes: hitboxes, options: {align, labels: {padding}}} = me; |
| 7451 |
if (this.isHorizontal()) { |
| 7452 |
let row = 0; |
| 7453 |
let left = _alignStartEnd(align, me.left + padding, me.right - me.lineWidths[row]); |
| 7454 |
for (const hitbox of hitboxes) { |
| 7455 |
if (row !== hitbox.row) { |
| 7456 |
row = hitbox.row; |
| 7457 |
left = _alignStartEnd(align, me.left + padding, me.right - me.lineWidths[row]); |
| 7458 |
} |
| 7459 |
hitbox.top += me.top + titleHeight + padding; |
| 7460 |
hitbox.left = left; |
| 7461 |
left += hitbox.width + padding; |
| 7462 |
} |
| 7463 |
} else { |
| 7464 |
let col = 0; |
| 7465 |
let top = _alignStartEnd(align, me.top + titleHeight + padding, me.bottom - me.columnSizes[col].height); |
| 7466 |
for (const hitbox of hitboxes) { |
| 7467 |
if (hitbox.col !== col) { |
| 7468 |
col = hitbox.col; |
| 7469 |
top = _alignStartEnd(align, me.top + titleHeight + padding, me.bottom - me.columnSizes[col].height); |
| 7470 |
} |
| 7471 |
hitbox.top = top; |
| 7472 |
hitbox.left += me.left + padding; |
| 7473 |
top += hitbox.height + padding; |
| 7474 |
} |
| 7475 |
} |
| 7476 |
} |
| 7477 |
isHorizontal() { |
| 7478 |
return this.options.position === 'top' || this.options.position === 'bottom'; |
| 7479 |
} |
| 7480 |
draw() { |
| 7481 |
const me = this; |
| 7482 |
if (me.options.display) { |
| 7483 |
const ctx = me.ctx; |
| 7484 |
clipArea(ctx, me); |
| 7485 |
me._draw(); |
| 7486 |
unclipArea(ctx); |
| 7487 |
} |
| 7488 |
} |
| 7489 |
_draw() { |
| 7490 |
const me = this; |
| 7491 |
const {options: opts, columnSizes, lineWidths, ctx} = me; |
| 7492 |
const {align, labels: labelOpts} = opts; |
| 7493 |
const defaultColor = defaults.color; |
| 7494 |
const rtlHelper = getRtlAdapter(opts.rtl, me.left, me.width); |
| 7495 |
const labelFont = toFont(labelOpts.font); |
| 7496 |
const {color: fontColor, padding} = labelOpts; |
| 7497 |
const fontSize = labelFont.size; |
| 7498 |
const halfFontSize = fontSize / 2; |
| 7499 |
let cursor; |
| 7500 |
me.drawTitle(); |
| 7501 |
ctx.textAlign = rtlHelper.textAlign('left'); |
| 7502 |
ctx.textBaseline = 'middle'; |
| 7503 |
ctx.lineWidth = 0.5; |
| 7504 |
ctx.font = labelFont.string; |
| 7505 |
const {boxWidth, boxHeight, itemHeight} = getBoxSize(labelOpts, fontSize); |
| 7506 |
const drawLegendBox = function(x, y, legendItem) { |
| 7507 |
if (isNaN(boxWidth) || boxWidth <= 0 || isNaN(boxHeight) || boxHeight < 0) { |
| 7508 |
return; |
| 7509 |
} |
| 7510 |
ctx.save(); |
| 7511 |
const lineWidth = valueOrDefault(legendItem.lineWidth, 1); |
| 7512 |
ctx.fillStyle = valueOrDefault(legendItem.fillStyle, defaultColor); |
| 7513 |
ctx.lineCap = valueOrDefault(legendItem.lineCap, 'butt'); |
| 7514 |
ctx.lineDashOffset = valueOrDefault(legendItem.lineDashOffset, 0); |
| 7515 |
ctx.lineJoin = valueOrDefault(legendItem.lineJoin, 'miter'); |
| 7516 |
ctx.lineWidth = lineWidth; |
| 7517 |
ctx.strokeStyle = valueOrDefault(legendItem.strokeStyle, defaultColor); |
| 7518 |
ctx.setLineDash(valueOrDefault(legendItem.lineDash, [])); |
| 7519 |
if (labelOpts.usePointStyle) { |
| 7520 |
const drawOptions = { |
| 7521 |
radius: boxWidth * Math.SQRT2 / 2, |
| 7522 |
pointStyle: legendItem.pointStyle, |
| 7523 |
rotation: legendItem.rotation, |
| 7524 |
borderWidth: lineWidth |
| 7525 |
}; |
| 7526 |
const centerX = rtlHelper.xPlus(x, boxWidth / 2); |
| 7527 |
const centerY = y + halfFontSize; |
| 7528 |
drawPoint(ctx, drawOptions, centerX, centerY); |
| 7529 |
} else { |
| 7530 |
const yBoxTop = y + Math.max((fontSize - boxHeight) / 2, 0); |
| 7531 |
const xBoxLeft = rtlHelper.leftForLtr(x, boxWidth); |
| 7532 |
const borderRadius = toTRBLCorners(legendItem.borderRadius); |
| 7533 |
ctx.beginPath(); |
| 7534 |
if (Object.values(borderRadius).some(v => v !== 0)) { |
| 7535 |
addRoundedRectPath(ctx, { |
| 7536 |
x: xBoxLeft, |
| 7537 |
y: yBoxTop, |
| 7538 |
w: boxWidth, |
| 7539 |
h: boxHeight, |
| 7540 |
radius: borderRadius, |
| 7541 |
}); |
| 7542 |
} else { |
| 7543 |
ctx.rect(xBoxLeft, yBoxTop, boxWidth, boxHeight); |
| 7544 |
} |
| 7545 |
ctx.fill(); |
| 7546 |
if (lineWidth !== 0) { |
| 7547 |
ctx.stroke(); |
| 7548 |
} |
| 7549 |
} |
| 7550 |
ctx.restore(); |
| 7551 |
}; |
| 7552 |
const fillText = function(x, y, legendItem) { |
| 7553 |
renderText(ctx, legendItem.text, x, y + (itemHeight / 2), labelFont, { |
| 7554 |
strikethrough: legendItem.hidden, |
| 7555 |
textAlign: legendItem.textAlign |
| 7556 |
}); |
| 7557 |
}; |
| 7558 |
const isHorizontal = me.isHorizontal(); |
| 7559 |
const titleHeight = this._computeTitleHeight(); |
| 7560 |
if (isHorizontal) { |
| 7561 |
cursor = { |
| 7562 |
x: _alignStartEnd(align, me.left + padding, me.right - lineWidths[0]), |
| 7563 |
y: me.top + padding + titleHeight, |
| 7564 |
line: 0 |
| 7565 |
}; |
| 7566 |
} else { |
| 7567 |
cursor = { |
| 7568 |
x: me.left + padding, |
| 7569 |
y: _alignStartEnd(align, me.top + titleHeight + padding, me.bottom - columnSizes[0].height), |
| 7570 |
line: 0 |
| 7571 |
}; |
| 7572 |
} |
| 7573 |
overrideTextDirection(me.ctx, opts.textDirection); |
| 7574 |
const lineHeight = itemHeight + padding; |
| 7575 |
me.legendItems.forEach((legendItem, i) => { |
| 7576 |
ctx.strokeStyle = legendItem.fontColor || fontColor; |
| 7577 |
ctx.fillStyle = legendItem.fontColor || fontColor; |
| 7578 |
const textWidth = ctx.measureText(legendItem.text).width; |
| 7579 |
const textAlign = rtlHelper.textAlign(legendItem.textAlign || (legendItem.textAlign = labelOpts.textAlign)); |
| 7580 |
const width = boxWidth + (fontSize / 2) + textWidth; |
| 7581 |
let x = cursor.x; |
| 7582 |
let y = cursor.y; |
| 7583 |
rtlHelper.setWidth(me.width); |
| 7584 |
if (isHorizontal) { |
| 7585 |
if (i > 0 && x + width + padding > me.right) { |
| 7586 |
y = cursor.y += lineHeight; |
| 7587 |
cursor.line++; |
| 7588 |
x = cursor.x = _alignStartEnd(align, me.left + padding, me.right - lineWidths[cursor.line]); |
| 7589 |
} |
| 7590 |
} else if (i > 0 && y + lineHeight > me.bottom) { |
| 7591 |
x = cursor.x = x + columnSizes[cursor.line].width + padding; |
| 7592 |
cursor.line++; |
| 7593 |
y = cursor.y = _alignStartEnd(align, me.top + titleHeight + padding, me.bottom - columnSizes[cursor.line].height); |
| 7594 |
} |
| 7595 |
const realX = rtlHelper.x(x); |
| 7596 |
drawLegendBox(realX, y, legendItem); |
| 7597 |
x = _textX(textAlign, x + boxWidth + halfFontSize, me.right); |
| 7598 |
fillText(rtlHelper.x(x), y, legendItem); |
| 7599 |
if (isHorizontal) { |
| 7600 |
cursor.x += width + padding; |
| 7601 |
} else { |
| 7602 |
cursor.y += lineHeight; |
| 7603 |
} |
| 7604 |
}); |
| 7605 |
restoreTextDirection(me.ctx, opts.textDirection); |
| 7606 |
} |
| 7607 |
drawTitle() { |
| 7608 |
const me = this; |
| 7609 |
const opts = me.options; |
| 7610 |
const titleOpts = opts.title; |
| 7611 |
const titleFont = toFont(titleOpts.font); |
| 7612 |
const titlePadding = toPadding(titleOpts.padding); |
| 7613 |
if (!titleOpts.display) { |
| 7614 |
return; |
| 7615 |
} |
| 7616 |
const rtlHelper = getRtlAdapter(opts.rtl, me.left, me.width); |
| 7617 |
const ctx = me.ctx; |
| 7618 |
const position = titleOpts.position; |
| 7619 |
const halfFontSize = titleFont.size / 2; |
| 7620 |
const topPaddingPlusHalfFontSize = titlePadding.top + halfFontSize; |
| 7621 |
let y; |
| 7622 |
let left = me.left; |
| 7623 |
let maxWidth = me.width; |
| 7624 |
if (this.isHorizontal()) { |
| 7625 |
maxWidth = Math.max(...me.lineWidths); |
| 7626 |
y = me.top + topPaddingPlusHalfFontSize; |
| 7627 |
left = _alignStartEnd(opts.align, left, me.right - maxWidth); |
| 7628 |
} else { |
| 7629 |
const maxHeight = me.columnSizes.reduce((acc, size) => Math.max(acc, size.height), 0); |
| 7630 |
y = topPaddingPlusHalfFontSize + _alignStartEnd(opts.align, me.top, me.bottom - maxHeight - opts.labels.padding - me._computeTitleHeight()); |
| 7631 |
} |
| 7632 |
const x = _alignStartEnd(position, left, left + maxWidth); |
| 7633 |
ctx.textAlign = rtlHelper.textAlign(_toLeftRightCenter(position)); |
| 7634 |
ctx.textBaseline = 'middle'; |
| 7635 |
ctx.strokeStyle = titleOpts.color; |
| 7636 |
ctx.fillStyle = titleOpts.color; |
| 7637 |
ctx.font = titleFont.string; |
| 7638 |
renderText(ctx, titleOpts.text, x, y, titleFont); |
| 7639 |
} |
| 7640 |
_computeTitleHeight() { |
| 7641 |
const titleOpts = this.options.title; |
| 7642 |
const titleFont = toFont(titleOpts.font); |
| 7643 |
const titlePadding = toPadding(titleOpts.padding); |
| 7644 |
return titleOpts.display ? titleFont.lineHeight + titlePadding.height : 0; |
| 7645 |
} |
| 7646 |
_getLegendItemAt(x, y) { |
| 7647 |
const me = this; |
| 7648 |
let i, hitBox, lh; |
| 7649 |
if (x >= me.left && x <= me.right && y >= me.top && y <= me.bottom) { |
| 7650 |
lh = me.legendHitBoxes; |
| 7651 |
for (i = 0; i < lh.length; ++i) { |
| 7652 |
hitBox = lh[i]; |
| 7653 |
if (x >= hitBox.left && x <= hitBox.left + hitBox.width && y >= hitBox.top && y <= hitBox.top + hitBox.height) { |
| 7654 |
return me.legendItems[i]; |
| 7655 |
} |
| 7656 |
} |
| 7657 |
} |
| 7658 |
return null; |
| 7659 |
} |
| 7660 |
handleEvent(e) { |
| 7661 |
const me = this; |
| 7662 |
const opts = me.options; |
| 7663 |
if (!isListened(e.type, opts)) { |
| 7664 |
return; |
| 7665 |
} |
| 7666 |
const hoveredItem = me._getLegendItemAt(e.x, e.y); |
| 7667 |
if (e.type === 'mousemove') { |
| 7668 |
const previous = me._hoveredItem; |
| 7669 |
const sameItem = itemsEqual(previous, hoveredItem); |
| 7670 |
if (previous && !sameItem) { |
| 7671 |
callback(opts.onLeave, [e, previous, me], me); |
| 7672 |
} |
| 7673 |
me._hoveredItem = hoveredItem; |
| 7674 |
if (hoveredItem && !sameItem) { |
| 7675 |
callback(opts.onHover, [e, hoveredItem, me], me); |
| 7676 |
} |
| 7677 |
} else if (hoveredItem) { |
| 7678 |
callback(opts.onClick, [e, hoveredItem, me], me); |
| 7679 |
} |
| 7680 |
} |
| 7681 |
} |
| 7682 |
function isListened(type, opts) { |
| 7683 |
if (type === 'mousemove' && (opts.onHover || opts.onLeave)) { |
| 7684 |
return true; |
| 7685 |
} |
| 7686 |
if (opts.onClick && (type === 'click' || type === 'mouseup')) { |
| 7687 |
return true; |
| 7688 |
} |
| 7689 |
return false; |
| 7690 |
} |
| 7691 |
var plugin_legend = { |
| 7692 |
id: 'legend', |
| 7693 |
_element: Legend, |
| 7694 |
start(chart, _args, options) { |
| 7695 |
const legend = chart.legend = new Legend({ctx: chart.ctx, options, chart}); |
| 7696 |
layouts.configure(chart, legend, options); |
| 7697 |
layouts.addBox(chart, legend); |
| 7698 |
}, |
| 7699 |
stop(chart) { |
| 7700 |
layouts.removeBox(chart, chart.legend); |
| 7701 |
delete chart.legend; |
| 7702 |
}, |
| 7703 |
beforeUpdate(chart, _args, options) { |
| 7704 |
const legend = chart.legend; |
| 7705 |
layouts.configure(chart, legend, options); |
| 7706 |
legend.options = options; |
| 7707 |
}, |
| 7708 |
afterUpdate(chart) { |
| 7709 |
const legend = chart.legend; |
| 7710 |
legend.buildLabels(); |
| 7711 |
legend.adjustHitBoxes(); |
| 7712 |
}, |
| 7713 |
afterEvent(chart, args) { |
| 7714 |
if (!args.replay) { |
| 7715 |
chart.legend.handleEvent(args.event); |
| 7716 |
} |
| 7717 |
}, |
| 7718 |
defaults: { |
| 7719 |
display: true, |
| 7720 |
position: 'top', |
| 7721 |
align: 'center', |
| 7722 |
fullSize: true, |
| 7723 |
reverse: false, |
| 7724 |
weight: 1000, |
| 7725 |
onClick(e, legendItem, legend) { |
| 7726 |
const index = legendItem.datasetIndex; |
| 7727 |
const ci = legend.chart; |
| 7728 |
if (ci.isDatasetVisible(index)) { |
| 7729 |
ci.hide(index); |
| 7730 |
legendItem.hidden = true; |
| 7731 |
} else { |
| 7732 |
ci.show(index); |
| 7733 |
legendItem.hidden = false; |
| 7734 |
} |
| 7735 |
}, |
| 7736 |
onHover: null, |
| 7737 |
onLeave: null, |
| 7738 |
labels: { |
| 7739 |
color: (ctx) => ctx.chart.options.color, |
| 7740 |
boxWidth: 40, |
| 7741 |
padding: 10, |
| 7742 |
generateLabels(chart) { |
| 7743 |
const datasets = chart.data.datasets; |
| 7744 |
const {labels: {usePointStyle, pointStyle, textAlign, color}} = chart.legend.options; |
| 7745 |
return chart._getSortedDatasetMetas().map((meta) => { |
| 7746 |
const style = meta.controller.getStyle(usePointStyle ? 0 : undefined); |
| 7747 |
const borderWidth = toPadding(style.borderWidth); |
| 7748 |
return { |
| 7749 |
text: datasets[meta.index].label, |
| 7750 |
fillStyle: style.backgroundColor, |
| 7751 |
fontColor: color, |
| 7752 |
hidden: !meta.visible, |
| 7753 |
lineCap: style.borderCapStyle, |
| 7754 |
lineDash: style.borderDash, |
| 7755 |
lineDashOffset: style.borderDashOffset, |
| 7756 |
lineJoin: style.borderJoinStyle, |
| 7757 |
lineWidth: (borderWidth.width + borderWidth.height) / 4, |
| 7758 |
strokeStyle: style.borderColor, |
| 7759 |
pointStyle: pointStyle || style.pointStyle, |
| 7760 |
rotation: style.rotation, |
| 7761 |
textAlign: textAlign || style.textAlign, |
| 7762 |
borderRadius: 0, |
| 7763 |
datasetIndex: meta.index |
| 7764 |
}; |
| 7765 |
}, this); |
| 7766 |
} |
| 7767 |
}, |
| 7768 |
title: { |
| 7769 |
color: (ctx) => ctx.chart.options.color, |
| 7770 |
display: false, |
| 7771 |
position: 'center', |
| 7772 |
text: '', |
| 7773 |
} |
| 7774 |
}, |
| 7775 |
descriptors: { |
| 7776 |
_scriptable: (name) => !name.startsWith('on'), |
| 7777 |
labels: { |
| 7778 |
_scriptable: (name) => !['generateLabels', 'filter', 'sort'].includes(name), |
| 7779 |
} |
| 7780 |
}, |
| 7781 |
}; |
| 7782 |
|
| 7783 |
class Title extends Element { |
| 7784 |
constructor(config) { |
| 7785 |
super(); |
| 7786 |
this.chart = config.chart; |
| 7787 |
this.options = config.options; |
| 7788 |
this.ctx = config.ctx; |
| 7789 |
this._padding = undefined; |
| 7790 |
this.top = undefined; |
| 7791 |
this.bottom = undefined; |
| 7792 |
this.left = undefined; |
| 7793 |
this.right = undefined; |
| 7794 |
this.width = undefined; |
| 7795 |
this.height = undefined; |
| 7796 |
this.position = undefined; |
| 7797 |
this.weight = undefined; |
| 7798 |
this.fullSize = undefined; |
| 7799 |
} |
| 7800 |
update(maxWidth, maxHeight) { |
| 7801 |
const me = this; |
| 7802 |
const opts = me.options; |
| 7803 |
me.left = 0; |
| 7804 |
me.top = 0; |
| 7805 |
if (!opts.display) { |
| 7806 |
me.width = me.height = me.right = me.bottom = 0; |
| 7807 |
return; |
| 7808 |
} |
| 7809 |
me.width = me.right = maxWidth; |
| 7810 |
me.height = me.bottom = maxHeight; |
| 7811 |
const lineCount = isArray(opts.text) ? opts.text.length : 1; |
| 7812 |
me._padding = toPadding(opts.padding); |
| 7813 |
const textSize = lineCount * toFont(opts.font).lineHeight + me._padding.height; |
| 7814 |
if (me.isHorizontal()) { |
| 7815 |
me.height = textSize; |
| 7816 |
} else { |
| 7817 |
me.width = textSize; |
| 7818 |
} |
| 7819 |
} |
| 7820 |
isHorizontal() { |
| 7821 |
const pos = this.options.position; |
| 7822 |
return pos === 'top' || pos === 'bottom'; |
| 7823 |
} |
| 7824 |
_drawArgs(offset) { |
| 7825 |
const {top, left, bottom, right, options} = this; |
| 7826 |
const align = options.align; |
| 7827 |
let rotation = 0; |
| 7828 |
let maxWidth, titleX, titleY; |
| 7829 |
if (this.isHorizontal()) { |
| 7830 |
titleX = _alignStartEnd(align, left, right); |
| 7831 |
titleY = top + offset; |
| 7832 |
maxWidth = right - left; |
| 7833 |
} else { |
| 7834 |
if (options.position === 'left') { |
| 7835 |
titleX = left + offset; |
| 7836 |
titleY = _alignStartEnd(align, bottom, top); |
| 7837 |
rotation = PI * -0.5; |
| 7838 |
} else { |
| 7839 |
titleX = right - offset; |
| 7840 |
titleY = _alignStartEnd(align, top, bottom); |
| 7841 |
rotation = PI * 0.5; |
| 7842 |
} |
| 7843 |
maxWidth = bottom - top; |
| 7844 |
} |
| 7845 |
return {titleX, titleY, maxWidth, rotation}; |
| 7846 |
} |
| 7847 |
draw() { |
| 7848 |
const me = this; |
| 7849 |
const ctx = me.ctx; |
| 7850 |
const opts = me.options; |
| 7851 |
if (!opts.display) { |
| 7852 |
return; |
| 7853 |
} |
| 7854 |
const fontOpts = toFont(opts.font); |
| 7855 |
const lineHeight = fontOpts.lineHeight; |
| 7856 |
const offset = lineHeight / 2 + me._padding.top; |
| 7857 |
const {titleX, titleY, maxWidth, rotation} = me._drawArgs(offset); |
| 7858 |
renderText(ctx, opts.text, 0, 0, fontOpts, { |
| 7859 |
color: opts.color, |
| 7860 |
maxWidth, |
| 7861 |
rotation, |
| 7862 |
textAlign: _toLeftRightCenter(opts.align), |
| 7863 |
textBaseline: 'middle', |
| 7864 |
translation: [titleX, titleY], |
| 7865 |
}); |
| 7866 |
} |
| 7867 |
} |
| 7868 |
function createTitle(chart, titleOpts) { |
| 7869 |
const title = new Title({ |
| 7870 |
ctx: chart.ctx, |
| 7871 |
options: titleOpts, |
| 7872 |
chart |
| 7873 |
}); |
| 7874 |
layouts.configure(chart, title, titleOpts); |
| 7875 |
layouts.addBox(chart, title); |
| 7876 |
chart.titleBlock = title; |
| 7877 |
} |
| 7878 |
var plugin_title = { |
| 7879 |
id: 'title', |
| 7880 |
_element: Title, |
| 7881 |
start(chart, _args, options) { |
| 7882 |
createTitle(chart, options); |
| 7883 |
}, |
| 7884 |
stop(chart) { |
| 7885 |
const titleBlock = chart.titleBlock; |
| 7886 |
layouts.removeBox(chart, titleBlock); |
| 7887 |
delete chart.titleBlock; |
| 7888 |
}, |
| 7889 |
beforeUpdate(chart, _args, options) { |
| 7890 |
const title = chart.titleBlock; |
| 7891 |
layouts.configure(chart, title, options); |
| 7892 |
title.options = options; |
| 7893 |
}, |
| 7894 |
defaults: { |
| 7895 |
align: 'center', |
| 7896 |
display: false, |
| 7897 |
font: { |
| 7898 |
weight: 'bold', |
| 7899 |
}, |
| 7900 |
fullSize: true, |
| 7901 |
padding: 10, |
| 7902 |
position: 'top', |
| 7903 |
text: '', |
| 7904 |
weight: 2000 |
| 7905 |
}, |
| 7906 |
defaultRoutes: { |
| 7907 |
color: 'color' |
| 7908 |
}, |
| 7909 |
descriptors: { |
| 7910 |
_scriptable: true, |
| 7911 |
_indexable: false, |
| 7912 |
}, |
| 7913 |
}; |
| 7914 |
|
| 7915 |
const positioners = { |
| 7916 |
average(items) { |
| 7917 |
if (!items.length) { |
| 7918 |
return false; |
| 7919 |
} |
| 7920 |
let i, len; |
| 7921 |
let x = 0; |
| 7922 |
let y = 0; |
| 7923 |
let count = 0; |
| 7924 |
for (i = 0, len = items.length; i < len; ++i) { |
| 7925 |
const el = items[i].element; |
| 7926 |
if (el && el.hasValue()) { |
| 7927 |
const pos = el.tooltipPosition(); |
| 7928 |
x += pos.x; |
| 7929 |
y += pos.y; |
| 7930 |
++count; |
| 7931 |
} |
| 7932 |
} |
| 7933 |
return { |
| 7934 |
x: x / count, |
| 7935 |
y: y / count |
| 7936 |
}; |
| 7937 |
}, |
| 7938 |
nearest(items, eventPosition) { |
| 7939 |
if (!items.length) { |
| 7940 |
return false; |
| 7941 |
} |
| 7942 |
let x = eventPosition.x; |
| 7943 |
let y = eventPosition.y; |
| 7944 |
let minDistance = Number.POSITIVE_INFINITY; |
| 7945 |
let i, len, nearestElement; |
| 7946 |
for (i = 0, len = items.length; i < len; ++i) { |
| 7947 |
const el = items[i].element; |
| 7948 |
if (el && el.hasValue()) { |
| 7949 |
const center = el.getCenterPoint(); |
| 7950 |
const d = distanceBetweenPoints(eventPosition, center); |
| 7951 |
if (d < minDistance) { |
| 7952 |
minDistance = d; |
| 7953 |
nearestElement = el; |
| 7954 |
} |
| 7955 |
} |
| 7956 |
} |
| 7957 |
if (nearestElement) { |
| 7958 |
const tp = nearestElement.tooltipPosition(); |
| 7959 |
x = tp.x; |
| 7960 |
y = tp.y; |
| 7961 |
} |
| 7962 |
return { |
| 7963 |
x, |
| 7964 |
y |
| 7965 |
}; |
| 7966 |
} |
| 7967 |
}; |
| 7968 |
function pushOrConcat(base, toPush) { |
| 7969 |
if (toPush) { |
| 7970 |
if (isArray(toPush)) { |
| 7971 |
Array.prototype.push.apply(base, toPush); |
| 7972 |
} else { |
| 7973 |
base.push(toPush); |
| 7974 |
} |
| 7975 |
} |
| 7976 |
return base; |
| 7977 |
} |
| 7978 |
function splitNewlines(str) { |
| 7979 |
if ((typeof str === 'string' || str instanceof String) && str.indexOf('\n') > -1) { |
| 7980 |
return str.split('\n'); |
| 7981 |
} |
| 7982 |
return str; |
| 7983 |
} |
| 7984 |
function createTooltipItem(chart, item) { |
| 7985 |
const {element, datasetIndex, index} = item; |
| 7986 |
const controller = chart.getDatasetMeta(datasetIndex).controller; |
| 7987 |
const {label, value} = controller.getLabelAndValue(index); |
| 7988 |
return { |
| 7989 |
chart, |
| 7990 |
label, |
| 7991 |
parsed: controller.getParsed(index), |
| 7992 |
raw: chart.data.datasets[datasetIndex].data[index], |
| 7993 |
formattedValue: value, |
| 7994 |
dataset: controller.getDataset(), |
| 7995 |
dataIndex: index, |
| 7996 |
datasetIndex, |
| 7997 |
element |
| 7998 |
}; |
| 7999 |
} |
| 8000 |
function getTooltipSize(tooltip, options) { |
| 8001 |
const ctx = tooltip._chart.ctx; |
| 8002 |
const {body, footer, title} = tooltip; |
| 8003 |
const {boxWidth, boxHeight} = options; |
| 8004 |
const bodyFont = toFont(options.bodyFont); |
| 8005 |
const titleFont = toFont(options.titleFont); |
| 8006 |
const footerFont = toFont(options.footerFont); |
| 8007 |
const titleLineCount = title.length; |
| 8008 |
const footerLineCount = footer.length; |
| 8009 |
const bodyLineItemCount = body.length; |
| 8010 |
const padding = toPadding(options.padding); |
| 8011 |
let height = padding.height; |
| 8012 |
let width = 0; |
| 8013 |
let combinedBodyLength = body.reduce((count, bodyItem) => count + bodyItem.before.length + bodyItem.lines.length + bodyItem.after.length, 0); |
| 8014 |
combinedBodyLength += tooltip.beforeBody.length + tooltip.afterBody.length; |
| 8015 |
if (titleLineCount) { |
| 8016 |
height += titleLineCount * titleFont.lineHeight |
| 8017 |
+ (titleLineCount - 1) * options.titleSpacing |
| 8018 |
+ options.titleMarginBottom; |
| 8019 |
} |
| 8020 |
if (combinedBodyLength) { |
| 8021 |
const bodyLineHeight = options.displayColors ? Math.max(boxHeight, bodyFont.lineHeight) : bodyFont.lineHeight; |
| 8022 |
height += bodyLineItemCount * bodyLineHeight |
| 8023 |
+ (combinedBodyLength - bodyLineItemCount) * bodyFont.lineHeight |
| 8024 |
+ (combinedBodyLength - 1) * options.bodySpacing; |
| 8025 |
} |
| 8026 |
if (footerLineCount) { |
| 8027 |
height += options.footerMarginTop |
| 8028 |
+ footerLineCount * footerFont.lineHeight |
| 8029 |
+ (footerLineCount - 1) * options.footerSpacing; |
| 8030 |
} |
| 8031 |
let widthPadding = 0; |
| 8032 |
const maxLineWidth = function(line) { |
| 8033 |
width = Math.max(width, ctx.measureText(line).width + widthPadding); |
| 8034 |
}; |
| 8035 |
ctx.save(); |
| 8036 |
ctx.font = titleFont.string; |
| 8037 |
each(tooltip.title, maxLineWidth); |
| 8038 |
ctx.font = bodyFont.string; |
| 8039 |
each(tooltip.beforeBody.concat(tooltip.afterBody), maxLineWidth); |
| 8040 |
widthPadding = options.displayColors ? (boxWidth + 2) : 0; |
| 8041 |
each(body, (bodyItem) => { |
| 8042 |
each(bodyItem.before, maxLineWidth); |
| 8043 |
each(bodyItem.lines, maxLineWidth); |
| 8044 |
each(bodyItem.after, maxLineWidth); |
| 8045 |
}); |
| 8046 |
widthPadding = 0; |
| 8047 |
ctx.font = footerFont.string; |
| 8048 |
each(tooltip.footer, maxLineWidth); |
| 8049 |
ctx.restore(); |
| 8050 |
width += padding.width; |
| 8051 |
return {width, height}; |
| 8052 |
} |
| 8053 |
function determineYAlign(chart, size) { |
| 8054 |
const {y, height} = size; |
| 8055 |
if (y < height / 2) { |
| 8056 |
return 'top'; |
| 8057 |
} else if (y > (chart.height - height / 2)) { |
| 8058 |
return 'bottom'; |
| 8059 |
} |
| 8060 |
return 'center'; |
| 8061 |
} |
| 8062 |
function doesNotFitWithAlign(xAlign, chart, options, size) { |
| 8063 |
const {x, width} = size; |
| 8064 |
const caret = options.caretSize + options.caretPadding; |
| 8065 |
if (xAlign === 'left' && x + width + caret > chart.width) { |
| 8066 |
return true; |
| 8067 |
} |
| 8068 |
if (xAlign === 'right' && x - width - caret < 0) { |
| 8069 |
return true; |
| 8070 |
} |
| 8071 |
} |
| 8072 |
function determineXAlign(chart, options, size, yAlign) { |
| 8073 |
const {x, width} = size; |
| 8074 |
const {width: chartWidth, chartArea: {left, right}} = chart; |
| 8075 |
let xAlign = 'center'; |
| 8076 |
if (yAlign === 'center') { |
| 8077 |
xAlign = x <= (left + right) / 2 ? 'left' : 'right'; |
| 8078 |
} else if (x <= width / 2) { |
| 8079 |
xAlign = 'left'; |
| 8080 |
} else if (x >= chartWidth - width / 2) { |
| 8081 |
xAlign = 'right'; |
| 8082 |
} |
| 8083 |
if (doesNotFitWithAlign(xAlign, chart, options, size)) { |
| 8084 |
xAlign = 'center'; |
| 8085 |
} |
| 8086 |
return xAlign; |
| 8087 |
} |
| 8088 |
function determineAlignment(chart, options, size) { |
| 8089 |
const yAlign = options.yAlign || determineYAlign(chart, size); |
| 8090 |
return { |
| 8091 |
xAlign: options.xAlign || determineXAlign(chart, options, size, yAlign), |
| 8092 |
yAlign |
| 8093 |
}; |
| 8094 |
} |
| 8095 |
function alignX(size, xAlign) { |
| 8096 |
let {x, width} = size; |
| 8097 |
if (xAlign === 'right') { |
| 8098 |
x -= width; |
| 8099 |
} else if (xAlign === 'center') { |
| 8100 |
x -= (width / 2); |
| 8101 |
} |
| 8102 |
return x; |
| 8103 |
} |
| 8104 |
function alignY(size, yAlign, paddingAndSize) { |
| 8105 |
let {y, height} = size; |
| 8106 |
if (yAlign === 'top') { |
| 8107 |
y += paddingAndSize; |
| 8108 |
} else if (yAlign === 'bottom') { |
| 8109 |
y -= height + paddingAndSize; |
| 8110 |
} else { |
| 8111 |
y -= (height / 2); |
| 8112 |
} |
| 8113 |
return y; |
| 8114 |
} |
| 8115 |
function getBackgroundPoint(options, size, alignment, chart) { |
| 8116 |
const {caretSize, caretPadding, cornerRadius} = options; |
| 8117 |
const {xAlign, yAlign} = alignment; |
| 8118 |
const paddingAndSize = caretSize + caretPadding; |
| 8119 |
const radiusAndPadding = cornerRadius + caretPadding; |
| 8120 |
let x = alignX(size, xAlign); |
| 8121 |
const y = alignY(size, yAlign, paddingAndSize); |
| 8122 |
if (yAlign === 'center') { |
| 8123 |
if (xAlign === 'left') { |
| 8124 |
x += paddingAndSize; |
| 8125 |
} else if (xAlign === 'right') { |
| 8126 |
x -= paddingAndSize; |
| 8127 |
} |
| 8128 |
} else if (xAlign === 'left') { |
| 8129 |
x -= radiusAndPadding; |
| 8130 |
} else if (xAlign === 'right') { |
| 8131 |
x += radiusAndPadding; |
| 8132 |
} |
| 8133 |
return { |
| 8134 |
x: _limitValue(x, 0, chart.width - size.width), |
| 8135 |
y: _limitValue(y, 0, chart.height - size.height) |
| 8136 |
}; |
| 8137 |
} |
| 8138 |
function getAlignedX(tooltip, align, options) { |
| 8139 |
const padding = toPadding(options.padding); |
| 8140 |
return align === 'center' |
| 8141 |
? tooltip.x + tooltip.width / 2 |
| 8142 |
: align === 'right' |
| 8143 |
? tooltip.x + tooltip.width - padding.right |
| 8144 |
: tooltip.x + padding.left; |
| 8145 |
} |
| 8146 |
function getBeforeAfterBodyLines(callback) { |
| 8147 |
return pushOrConcat([], splitNewlines(callback)); |
| 8148 |
} |
| 8149 |
function createTooltipContext(parent, tooltip, tooltipItems) { |
| 8150 |
return Object.assign(Object.create(parent), { |
| 8151 |
tooltip, |
| 8152 |
tooltipItems, |
| 8153 |
type: 'tooltip' |
| 8154 |
}); |
| 8155 |
} |
| 8156 |
function overrideCallbacks(callbacks, context) { |
| 8157 |
const override = context && context.dataset && context.dataset.tooltip && context.dataset.tooltip.callbacks; |
| 8158 |
return override ? callbacks.override(override) : callbacks; |
| 8159 |
} |
| 8160 |
class Tooltip extends Element { |
| 8161 |
constructor(config) { |
| 8162 |
super(); |
| 8163 |
this.opacity = 0; |
| 8164 |
this._active = []; |
| 8165 |
this._chart = config._chart; |
| 8166 |
this._eventPosition = undefined; |
| 8167 |
this._size = undefined; |
| 8168 |
this._cachedAnimations = undefined; |
| 8169 |
this._tooltipItems = []; |
| 8170 |
this.$animations = undefined; |
| 8171 |
this.$context = undefined; |
| 8172 |
this.options = config.options; |
| 8173 |
this.dataPoints = undefined; |
| 8174 |
this.title = undefined; |
| 8175 |
this.beforeBody = undefined; |
| 8176 |
this.body = undefined; |
| 8177 |
this.afterBody = undefined; |
| 8178 |
this.footer = undefined; |
| 8179 |
this.xAlign = undefined; |
| 8180 |
this.yAlign = undefined; |
| 8181 |
this.x = undefined; |
| 8182 |
this.y = undefined; |
| 8183 |
this.height = undefined; |
| 8184 |
this.width = undefined; |
| 8185 |
this.caretX = undefined; |
| 8186 |
this.caretY = undefined; |
| 8187 |
this.labelColors = undefined; |
| 8188 |
this.labelPointStyles = undefined; |
| 8189 |
this.labelTextColors = undefined; |
| 8190 |
} |
| 8191 |
initialize(options) { |
| 8192 |
this.options = options; |
| 8193 |
this._cachedAnimations = undefined; |
| 8194 |
this.$context = undefined; |
| 8195 |
} |
| 8196 |
_resolveAnimations() { |
| 8197 |
const me = this; |
| 8198 |
const cached = me._cachedAnimations; |
| 8199 |
if (cached) { |
| 8200 |
return cached; |
| 8201 |
} |
| 8202 |
const chart = me._chart; |
| 8203 |
const options = me.options.setContext(me.getContext()); |
| 8204 |
const opts = options.enabled && chart.options.animation && options.animations; |
| 8205 |
const animations = new Animations(me._chart, opts); |
| 8206 |
if (opts._cacheable) { |
| 8207 |
me._cachedAnimations = Object.freeze(animations); |
| 8208 |
} |
| 8209 |
return animations; |
| 8210 |
} |
| 8211 |
getContext() { |
| 8212 |
const me = this; |
| 8213 |
return me.$context || |
| 8214 |
(me.$context = createTooltipContext(me._chart.getContext(), me, me._tooltipItems)); |
| 8215 |
} |
| 8216 |
getTitle(context, options) { |
| 8217 |
const me = this; |
| 8218 |
const {callbacks} = options; |
| 8219 |
const beforeTitle = callbacks.beforeTitle.apply(me, [context]); |
| 8220 |
const title = callbacks.title.apply(me, [context]); |
| 8221 |
const afterTitle = callbacks.afterTitle.apply(me, [context]); |
| 8222 |
let lines = []; |
| 8223 |
lines = pushOrConcat(lines, splitNewlines(beforeTitle)); |
| 8224 |
lines = pushOrConcat(lines, splitNewlines(title)); |
| 8225 |
lines = pushOrConcat(lines, splitNewlines(afterTitle)); |
| 8226 |
return lines; |
| 8227 |
} |
| 8228 |
getBeforeBody(tooltipItems, options) { |
| 8229 |
return getBeforeAfterBodyLines(options.callbacks.beforeBody.apply(this, [tooltipItems])); |
| 8230 |
} |
| 8231 |
getBody(tooltipItems, options) { |
| 8232 |
const me = this; |
| 8233 |
const {callbacks} = options; |
| 8234 |
const bodyItems = []; |
| 8235 |
each(tooltipItems, (context) => { |
| 8236 |
const bodyItem = { |
| 8237 |
before: [], |
| 8238 |
lines: [], |
| 8239 |
after: [] |
| 8240 |
}; |
| 8241 |
const scoped = overrideCallbacks(callbacks, context); |
| 8242 |
pushOrConcat(bodyItem.before, splitNewlines(scoped.beforeLabel.call(me, context))); |
| 8243 |
pushOrConcat(bodyItem.lines, scoped.label.call(me, context)); |
| 8244 |
pushOrConcat(bodyItem.after, splitNewlines(scoped.afterLabel.call(me, context))); |
| 8245 |
bodyItems.push(bodyItem); |
| 8246 |
}); |
| 8247 |
return bodyItems; |
| 8248 |
} |
| 8249 |
getAfterBody(tooltipItems, options) { |
| 8250 |
return getBeforeAfterBodyLines(options.callbacks.afterBody.apply(this, [tooltipItems])); |
| 8251 |
} |
| 8252 |
getFooter(tooltipItems, options) { |
| 8253 |
const me = this; |
| 8254 |
const {callbacks} = options; |
| 8255 |
const beforeFooter = callbacks.beforeFooter.apply(me, [tooltipItems]); |
| 8256 |
const footer = callbacks.footer.apply(me, [tooltipItems]); |
| 8257 |
const afterFooter = callbacks.afterFooter.apply(me, [tooltipItems]); |
| 8258 |
let lines = []; |
| 8259 |
lines = pushOrConcat(lines, splitNewlines(beforeFooter)); |
| 8260 |
lines = pushOrConcat(lines, splitNewlines(footer)); |
| 8261 |
lines = pushOrConcat(lines, splitNewlines(afterFooter)); |
| 8262 |
return lines; |
| 8263 |
} |
| 8264 |
_createItems(options) { |
| 8265 |
const me = this; |
| 8266 |
const active = me._active; |
| 8267 |
const data = me._chart.data; |
| 8268 |
const labelColors = []; |
| 8269 |
const labelPointStyles = []; |
| 8270 |
const labelTextColors = []; |
| 8271 |
let tooltipItems = []; |
| 8272 |
let i, len; |
| 8273 |
for (i = 0, len = active.length; i < len; ++i) { |
| 8274 |
tooltipItems.push(createTooltipItem(me._chart, active[i])); |
| 8275 |
} |
| 8276 |
if (options.filter) { |
| 8277 |
tooltipItems = tooltipItems.filter((element, index, array) => options.filter(element, index, array, data)); |
| 8278 |
} |
| 8279 |
if (options.itemSort) { |
| 8280 |
tooltipItems = tooltipItems.sort((a, b) => options.itemSort(a, b, data)); |
| 8281 |
} |
| 8282 |
each(tooltipItems, (context) => { |
| 8283 |
const scoped = overrideCallbacks(options.callbacks, context); |
| 8284 |
labelColors.push(scoped.labelColor.call(me, context)); |
| 8285 |
labelPointStyles.push(scoped.labelPointStyle.call(me, context)); |
| 8286 |
labelTextColors.push(scoped.labelTextColor.call(me, context)); |
| 8287 |
}); |
| 8288 |
me.labelColors = labelColors; |
| 8289 |
me.labelPointStyles = labelPointStyles; |
| 8290 |
me.labelTextColors = labelTextColors; |
| 8291 |
me.dataPoints = tooltipItems; |
| 8292 |
return tooltipItems; |
| 8293 |
} |
| 8294 |
update(changed, replay) { |
| 8295 |
const me = this; |
| 8296 |
const options = me.options.setContext(me.getContext()); |
| 8297 |
const active = me._active; |
| 8298 |
let properties; |
| 8299 |
let tooltipItems = []; |
| 8300 |
if (!active.length) { |
| 8301 |
if (me.opacity !== 0) { |
| 8302 |
properties = { |
| 8303 |
opacity: 0 |
| 8304 |
}; |
| 8305 |
} |
| 8306 |
} else { |
| 8307 |
const position = positioners[options.position].call(me, active, me._eventPosition); |
| 8308 |
tooltipItems = me._createItems(options); |
| 8309 |
me.title = me.getTitle(tooltipItems, options); |
| 8310 |
me.beforeBody = me.getBeforeBody(tooltipItems, options); |
| 8311 |
me.body = me.getBody(tooltipItems, options); |
| 8312 |
me.afterBody = me.getAfterBody(tooltipItems, options); |
| 8313 |
me.footer = me.getFooter(tooltipItems, options); |
| 8314 |
const size = me._size = getTooltipSize(me, options); |
| 8315 |
const positionAndSize = Object.assign({}, position, size); |
| 8316 |
const alignment = determineAlignment(me._chart, options, positionAndSize); |
| 8317 |
const backgroundPoint = getBackgroundPoint(options, positionAndSize, alignment, me._chart); |
| 8318 |
me.xAlign = alignment.xAlign; |
| 8319 |
me.yAlign = alignment.yAlign; |
| 8320 |
properties = { |
| 8321 |
opacity: 1, |
| 8322 |
x: backgroundPoint.x, |
| 8323 |
y: backgroundPoint.y, |
| 8324 |
width: size.width, |
| 8325 |
height: size.height, |
| 8326 |
caretX: position.x, |
| 8327 |
caretY: position.y |
| 8328 |
}; |
| 8329 |
} |
| 8330 |
me._tooltipItems = tooltipItems; |
| 8331 |
me.$context = undefined; |
| 8332 |
if (properties) { |
| 8333 |
me._resolveAnimations().update(me, properties); |
| 8334 |
} |
| 8335 |
if (changed && options.external) { |
| 8336 |
options.external.call(me, {chart: me._chart, tooltip: me, replay}); |
| 8337 |
} |
| 8338 |
} |
| 8339 |
drawCaret(tooltipPoint, ctx, size, options) { |
| 8340 |
const caretPosition = this.getCaretPosition(tooltipPoint, size, options); |
| 8341 |
ctx.lineTo(caretPosition.x1, caretPosition.y1); |
| 8342 |
ctx.lineTo(caretPosition.x2, caretPosition.y2); |
| 8343 |
ctx.lineTo(caretPosition.x3, caretPosition.y3); |
| 8344 |
} |
| 8345 |
getCaretPosition(tooltipPoint, size, options) { |
| 8346 |
const {xAlign, yAlign} = this; |
| 8347 |
const {cornerRadius, caretSize} = options; |
| 8348 |
const {x: ptX, y: ptY} = tooltipPoint; |
| 8349 |
const {width, height} = size; |
| 8350 |
let x1, x2, x3, y1, y2, y3; |
| 8351 |
if (yAlign === 'center') { |
| 8352 |
y2 = ptY + (height / 2); |
| 8353 |
if (xAlign === 'left') { |
| 8354 |
x1 = ptX; |
| 8355 |
x2 = x1 - caretSize; |
| 8356 |
y1 = y2 + caretSize; |
| 8357 |
y3 = y2 - caretSize; |
| 8358 |
} else { |
| 8359 |
x1 = ptX + width; |
| 8360 |
x2 = x1 + caretSize; |
| 8361 |
y1 = y2 - caretSize; |
| 8362 |
y3 = y2 + caretSize; |
| 8363 |
} |
| 8364 |
x3 = x1; |
| 8365 |
} else { |
| 8366 |
if (xAlign === 'left') { |
| 8367 |
x2 = ptX + cornerRadius + (caretSize); |
| 8368 |
} else if (xAlign === 'right') { |
| 8369 |
x2 = ptX + width - cornerRadius - caretSize; |
| 8370 |
} else { |
| 8371 |
x2 = this.caretX; |
| 8372 |
} |
| 8373 |
if (yAlign === 'top') { |
| 8374 |
y1 = ptY; |
| 8375 |
y2 = y1 - caretSize; |
| 8376 |
x1 = x2 - caretSize; |
| 8377 |
x3 = x2 + caretSize; |
| 8378 |
} else { |
| 8379 |
y1 = ptY + height; |
| 8380 |
y2 = y1 + caretSize; |
| 8381 |
x1 = x2 + caretSize; |
| 8382 |
x3 = x2 - caretSize; |
| 8383 |
} |
| 8384 |
y3 = y1; |
| 8385 |
} |
| 8386 |
return {x1, x2, x3, y1, y2, y3}; |
| 8387 |
} |
| 8388 |
drawTitle(pt, ctx, options) { |
| 8389 |
const me = this; |
| 8390 |
const title = me.title; |
| 8391 |
const length = title.length; |
| 8392 |
let titleFont, titleSpacing, i; |
| 8393 |
if (length) { |
| 8394 |
const rtlHelper = getRtlAdapter(options.rtl, me.x, me.width); |
| 8395 |
pt.x = getAlignedX(me, options.titleAlign, options); |
| 8396 |
ctx.textAlign = rtlHelper.textAlign(options.titleAlign); |
| 8397 |
ctx.textBaseline = 'middle'; |
| 8398 |
titleFont = toFont(options.titleFont); |
| 8399 |
titleSpacing = options.titleSpacing; |
| 8400 |
ctx.fillStyle = options.titleColor; |
| 8401 |
ctx.font = titleFont.string; |
| 8402 |
for (i = 0; i < length; ++i) { |
| 8403 |
ctx.fillText(title[i], rtlHelper.x(pt.x), pt.y + titleFont.lineHeight / 2); |
| 8404 |
pt.y += titleFont.lineHeight + titleSpacing; |
| 8405 |
if (i + 1 === length) { |
| 8406 |
pt.y += options.titleMarginBottom - titleSpacing; |
| 8407 |
} |
| 8408 |
} |
| 8409 |
} |
| 8410 |
} |
| 8411 |
_drawColorBox(ctx, pt, i, rtlHelper, options) { |
| 8412 |
const me = this; |
| 8413 |
const labelColors = me.labelColors[i]; |
| 8414 |
const labelPointStyle = me.labelPointStyles[i]; |
| 8415 |
const {boxHeight, boxWidth} = options; |
| 8416 |
const bodyFont = toFont(options.bodyFont); |
| 8417 |
const colorX = getAlignedX(me, 'left', options); |
| 8418 |
const rtlColorX = rtlHelper.x(colorX); |
| 8419 |
const yOffSet = boxHeight < bodyFont.lineHeight ? (bodyFont.lineHeight - boxHeight) / 2 : 0; |
| 8420 |
const colorY = pt.y + yOffSet; |
| 8421 |
if (options.usePointStyle) { |
| 8422 |
const drawOptions = { |
| 8423 |
radius: Math.min(boxWidth, boxHeight) / 2, |
| 8424 |
pointStyle: labelPointStyle.pointStyle, |
| 8425 |
rotation: labelPointStyle.rotation, |
| 8426 |
borderWidth: 1 |
| 8427 |
}; |
| 8428 |
const centerX = rtlHelper.leftForLtr(rtlColorX, boxWidth) + boxWidth / 2; |
| 8429 |
const centerY = colorY + boxHeight / 2; |
| 8430 |
ctx.strokeStyle = options.multiKeyBackground; |
| 8431 |
ctx.fillStyle = options.multiKeyBackground; |
| 8432 |
drawPoint(ctx, drawOptions, centerX, centerY); |
| 8433 |
ctx.strokeStyle = labelColors.borderColor; |
| 8434 |
ctx.fillStyle = labelColors.backgroundColor; |
| 8435 |
drawPoint(ctx, drawOptions, centerX, centerY); |
| 8436 |
} else { |
| 8437 |
ctx.lineWidth = labelColors.borderWidth || 1; |
| 8438 |
ctx.strokeStyle = labelColors.borderColor; |
| 8439 |
ctx.setLineDash(labelColors.borderDash || []); |
| 8440 |
ctx.lineDashOffset = labelColors.borderDashOffset || 0; |
| 8441 |
const outerX = rtlHelper.leftForLtr(rtlColorX, boxWidth); |
| 8442 |
const innerX = rtlHelper.leftForLtr(rtlHelper.xPlus(rtlColorX, 1), boxWidth - 2); |
| 8443 |
const borderRadius = toTRBLCorners(labelColors.borderRadius); |
| 8444 |
if (Object.values(borderRadius).some(v => v !== 0)) { |
| 8445 |
ctx.beginPath(); |
| 8446 |
ctx.fillStyle = options.multiKeyBackground; |
| 8447 |
addRoundedRectPath(ctx, { |
| 8448 |
x: outerX, |
| 8449 |
y: colorY, |
| 8450 |
w: boxWidth, |
| 8451 |
h: boxHeight, |
| 8452 |
radius: borderRadius, |
| 8453 |
}); |
| 8454 |
ctx.fill(); |
| 8455 |
ctx.stroke(); |
| 8456 |
ctx.fillStyle = labelColors.backgroundColor; |
| 8457 |
ctx.beginPath(); |
| 8458 |
addRoundedRectPath(ctx, { |
| 8459 |
x: innerX, |
| 8460 |
y: colorY + 1, |
| 8461 |
w: boxWidth - 2, |
| 8462 |
h: boxHeight - 2, |
| 8463 |
radius: borderRadius, |
| 8464 |
}); |
| 8465 |
ctx.fill(); |
| 8466 |
} else { |
| 8467 |
ctx.fillStyle = options.multiKeyBackground; |
| 8468 |
ctx.fillRect(outerX, colorY, boxWidth, boxHeight); |
| 8469 |
ctx.strokeRect(outerX, colorY, boxWidth, boxHeight); |
| 8470 |
ctx.fillStyle = labelColors.backgroundColor; |
| 8471 |
ctx.fillRect(innerX, colorY + 1, boxWidth - 2, boxHeight - 2); |
| 8472 |
} |
| 8473 |
} |
| 8474 |
ctx.fillStyle = me.labelTextColors[i]; |
| 8475 |
} |
| 8476 |
drawBody(pt, ctx, options) { |
| 8477 |
const me = this; |
| 8478 |
const {body} = me; |
| 8479 |
const {bodySpacing, bodyAlign, displayColors, boxHeight, boxWidth} = options; |
| 8480 |
const bodyFont = toFont(options.bodyFont); |
| 8481 |
let bodyLineHeight = bodyFont.lineHeight; |
| 8482 |
let xLinePadding = 0; |
| 8483 |
const rtlHelper = getRtlAdapter(options.rtl, me.x, me.width); |
| 8484 |
const fillLineOfText = function(line) { |
| 8485 |
ctx.fillText(line, rtlHelper.x(pt.x + xLinePadding), pt.y + bodyLineHeight / 2); |
| 8486 |
pt.y += bodyLineHeight + bodySpacing; |
| 8487 |
}; |
| 8488 |
const bodyAlignForCalculation = rtlHelper.textAlign(bodyAlign); |
| 8489 |
let bodyItem, textColor, lines, i, j, ilen, jlen; |
| 8490 |
ctx.textAlign = bodyAlign; |
| 8491 |
ctx.textBaseline = 'middle'; |
| 8492 |
ctx.font = bodyFont.string; |
| 8493 |
pt.x = getAlignedX(me, bodyAlignForCalculation, options); |
| 8494 |
ctx.fillStyle = options.bodyColor; |
| 8495 |
each(me.beforeBody, fillLineOfText); |
| 8496 |
xLinePadding = displayColors && bodyAlignForCalculation !== 'right' |
| 8497 |
? bodyAlign === 'center' ? (boxWidth / 2 + 1) : (boxWidth + 2) |
| 8498 |
: 0; |
| 8499 |
for (i = 0, ilen = body.length; i < ilen; ++i) { |
| 8500 |
bodyItem = body[i]; |
| 8501 |
textColor = me.labelTextColors[i]; |
| 8502 |
ctx.fillStyle = textColor; |
| 8503 |
each(bodyItem.before, fillLineOfText); |
| 8504 |
lines = bodyItem.lines; |
| 8505 |
if (displayColors && lines.length) { |
| 8506 |
me._drawColorBox(ctx, pt, i, rtlHelper, options); |
| 8507 |
bodyLineHeight = Math.max(bodyFont.lineHeight, boxHeight); |
| 8508 |
} |
| 8509 |
for (j = 0, jlen = lines.length; j < jlen; ++j) { |
| 8510 |
fillLineOfText(lines[j]); |
| 8511 |
bodyLineHeight = bodyFont.lineHeight; |
| 8512 |
} |
| 8513 |
each(bodyItem.after, fillLineOfText); |
| 8514 |
} |
| 8515 |
xLinePadding = 0; |
| 8516 |
bodyLineHeight = bodyFont.lineHeight; |
| 8517 |
each(me.afterBody, fillLineOfText); |
| 8518 |
pt.y -= bodySpacing; |
| 8519 |
} |
| 8520 |
drawFooter(pt, ctx, options) { |
| 8521 |
const me = this; |
| 8522 |
const footer = me.footer; |
| 8523 |
const length = footer.length; |
| 8524 |
let footerFont, i; |
| 8525 |
if (length) { |
| 8526 |
const rtlHelper = getRtlAdapter(options.rtl, me.x, me.width); |
| 8527 |
pt.x = getAlignedX(me, options.footerAlign, options); |
| 8528 |
pt.y += options.footerMarginTop; |
| 8529 |
ctx.textAlign = rtlHelper.textAlign(options.footerAlign); |
| 8530 |
ctx.textBaseline = 'middle'; |
| 8531 |
footerFont = toFont(options.footerFont); |
| 8532 |
ctx.fillStyle = options.footerColor; |
| 8533 |
ctx.font = footerFont.string; |
| 8534 |
for (i = 0; i < length; ++i) { |
| 8535 |
ctx.fillText(footer[i], rtlHelper.x(pt.x), pt.y + footerFont.lineHeight / 2); |
| 8536 |
pt.y += footerFont.lineHeight + options.footerSpacing; |
| 8537 |
} |
| 8538 |
} |
| 8539 |
} |
| 8540 |
drawBackground(pt, ctx, tooltipSize, options) { |
| 8541 |
const {xAlign, yAlign} = this; |
| 8542 |
const {x, y} = pt; |
| 8543 |
const {width, height} = tooltipSize; |
| 8544 |
const radius = options.cornerRadius; |
| 8545 |
ctx.fillStyle = options.backgroundColor; |
| 8546 |
ctx.strokeStyle = options.borderColor; |
| 8547 |
ctx.lineWidth = options.borderWidth; |
| 8548 |
ctx.beginPath(); |
| 8549 |
ctx.moveTo(x + radius, y); |
| 8550 |
if (yAlign === 'top') { |
| 8551 |
this.drawCaret(pt, ctx, tooltipSize, options); |
| 8552 |
} |
| 8553 |
ctx.lineTo(x + width - radius, y); |
| 8554 |
ctx.quadraticCurveTo(x + width, y, x + width, y + radius); |
| 8555 |
if (yAlign === 'center' && xAlign === 'right') { |
| 8556 |
this.drawCaret(pt, ctx, tooltipSize, options); |
| 8557 |
} |
| 8558 |
ctx.lineTo(x + width, y + height - radius); |
| 8559 |
ctx.quadraticCurveTo(x + width, y + height, x + width - radius, y + height); |
| 8560 |
if (yAlign === 'bottom') { |
| 8561 |
this.drawCaret(pt, ctx, tooltipSize, options); |
| 8562 |
} |
| 8563 |
ctx.lineTo(x + radius, y + height); |
| 8564 |
ctx.quadraticCurveTo(x, y + height, x, y + height - radius); |
| 8565 |
if (yAlign === 'center' && xAlign === 'left') { |
| 8566 |
this.drawCaret(pt, ctx, tooltipSize, options); |
| 8567 |
} |
| 8568 |
ctx.lineTo(x, y + radius); |
| 8569 |
ctx.quadraticCurveTo(x, y, x + radius, y); |
| 8570 |
ctx.closePath(); |
| 8571 |
ctx.fill(); |
| 8572 |
if (options.borderWidth > 0) { |
| 8573 |
ctx.stroke(); |
| 8574 |
} |
| 8575 |
} |
| 8576 |
_updateAnimationTarget(options) { |
| 8577 |
const me = this; |
| 8578 |
const chart = me._chart; |
| 8579 |
const anims = me.$animations; |
| 8580 |
const animX = anims && anims.x; |
| 8581 |
const animY = anims && anims.y; |
| 8582 |
if (animX || animY) { |
| 8583 |
const position = positioners[options.position].call(me, me._active, me._eventPosition); |
| 8584 |
if (!position) { |
| 8585 |
return; |
| 8586 |
} |
| 8587 |
const size = me._size = getTooltipSize(me, options); |
| 8588 |
const positionAndSize = Object.assign({}, position, me._size); |
| 8589 |
const alignment = determineAlignment(chart, options, positionAndSize); |
| 8590 |
const point = getBackgroundPoint(options, positionAndSize, alignment, chart); |
| 8591 |
if (animX._to !== point.x || animY._to !== point.y) { |
| 8592 |
me.xAlign = alignment.xAlign; |
| 8593 |
me.yAlign = alignment.yAlign; |
| 8594 |
me.width = size.width; |
| 8595 |
me.height = size.height; |
| 8596 |
me.caretX = position.x; |
| 8597 |
me.caretY = position.y; |
| 8598 |
me._resolveAnimations().update(me, point); |
| 8599 |
} |
| 8600 |
} |
| 8601 |
} |
| 8602 |
draw(ctx) { |
| 8603 |
const me = this; |
| 8604 |
const options = me.options.setContext(me.getContext()); |
| 8605 |
let opacity = me.opacity; |
| 8606 |
if (!opacity) { |
| 8607 |
return; |
| 8608 |
} |
| 8609 |
me._updateAnimationTarget(options); |
| 8610 |
const tooltipSize = { |
| 8611 |
width: me.width, |
| 8612 |
height: me.height |
| 8613 |
}; |
| 8614 |
const pt = { |
| 8615 |
x: me.x, |
| 8616 |
y: me.y |
| 8617 |
}; |
| 8618 |
opacity = Math.abs(opacity) < 1e-3 ? 0 : opacity; |
| 8619 |
const padding = toPadding(options.padding); |
| 8620 |
const hasTooltipContent = me.title.length || me.beforeBody.length || me.body.length || me.afterBody.length || me.footer.length; |
| 8621 |
if (options.enabled && hasTooltipContent) { |
| 8622 |
ctx.save(); |
| 8623 |
ctx.globalAlpha = opacity; |
| 8624 |
me.drawBackground(pt, ctx, tooltipSize, options); |
| 8625 |
overrideTextDirection(ctx, options.textDirection); |
| 8626 |
pt.y += padding.top; |
| 8627 |
me.drawTitle(pt, ctx, options); |
| 8628 |
me.drawBody(pt, ctx, options); |
| 8629 |
me.drawFooter(pt, ctx, options); |
| 8630 |
restoreTextDirection(ctx, options.textDirection); |
| 8631 |
ctx.restore(); |
| 8632 |
} |
| 8633 |
} |
| 8634 |
getActiveElements() { |
| 8635 |
return this._active || []; |
| 8636 |
} |
| 8637 |
setActiveElements(activeElements, eventPosition) { |
| 8638 |
const me = this; |
| 8639 |
const lastActive = me._active; |
| 8640 |
const active = activeElements.map(({datasetIndex, index}) => { |
| 8641 |
const meta = me._chart.getDatasetMeta(datasetIndex); |
| 8642 |
if (!meta) { |
| 8643 |
throw new Error('Cannot find a dataset at index ' + datasetIndex); |
| 8644 |
} |
| 8645 |
return { |
| 8646 |
datasetIndex, |
| 8647 |
element: meta.data[index], |
| 8648 |
index, |
| 8649 |
}; |
| 8650 |
}); |
| 8651 |
const changed = !_elementsEqual(lastActive, active); |
| 8652 |
const positionChanged = me._positionChanged(active, eventPosition); |
| 8653 |
if (changed || positionChanged) { |
| 8654 |
me._active = active; |
| 8655 |
me._eventPosition = eventPosition; |
| 8656 |
me.update(true); |
| 8657 |
} |
| 8658 |
} |
| 8659 |
handleEvent(e, replay) { |
| 8660 |
const me = this; |
| 8661 |
const options = me.options; |
| 8662 |
const lastActive = me._active || []; |
| 8663 |
let changed = false; |
| 8664 |
let active = []; |
| 8665 |
if (e.type !== 'mouseout') { |
| 8666 |
active = me._chart.getElementsAtEventForMode(e, options.mode, options, replay); |
| 8667 |
if (options.reverse) { |
| 8668 |
active.reverse(); |
| 8669 |
} |
| 8670 |
} |
| 8671 |
const positionChanged = me._positionChanged(active, e); |
| 8672 |
changed = replay || !_elementsEqual(active, lastActive) || positionChanged; |
| 8673 |
if (changed) { |
| 8674 |
me._active = active; |
| 8675 |
if (options.enabled || options.external) { |
| 8676 |
me._eventPosition = { |
| 8677 |
x: e.x, |
| 8678 |
y: e.y |
| 8679 |
}; |
| 8680 |
me.update(true, replay); |
| 8681 |
} |
| 8682 |
} |
| 8683 |
return changed; |
| 8684 |
} |
| 8685 |
_positionChanged(active, e) { |
| 8686 |
const {caretX, caretY, options} = this; |
| 8687 |
const position = positioners[options.position].call(this, active, e); |
| 8688 |
return position !== false && (caretX !== position.x || caretY !== position.y); |
| 8689 |
} |
| 8690 |
} |
| 8691 |
Tooltip.positioners = positioners; |
| 8692 |
var plugin_tooltip = { |
| 8693 |
id: 'tooltip', |
| 8694 |
_element: Tooltip, |
| 8695 |
positioners, |
| 8696 |
afterInit(chart, _args, options) { |
| 8697 |
if (options) { |
| 8698 |
chart.tooltip = new Tooltip({_chart: chart, options}); |
| 8699 |
} |
| 8700 |
}, |
| 8701 |
beforeUpdate(chart, _args, options) { |
| 8702 |
if (chart.tooltip) { |
| 8703 |
chart.tooltip.initialize(options); |
| 8704 |
} |
| 8705 |
}, |
| 8706 |
reset(chart, _args, options) { |
| 8707 |
if (chart.tooltip) { |
| 8708 |
chart.tooltip.initialize(options); |
| 8709 |
} |
| 8710 |
}, |
| 8711 |
afterDraw(chart) { |
| 8712 |
const tooltip = chart.tooltip; |
| 8713 |
const args = { |
| 8714 |
tooltip |
| 8715 |
}; |
| 8716 |
if (chart.notifyPlugins('beforeTooltipDraw', args) === false) { |
| 8717 |
return; |
| 8718 |
} |
| 8719 |
if (tooltip) { |
| 8720 |
tooltip.draw(chart.ctx); |
| 8721 |
} |
| 8722 |
chart.notifyPlugins('afterTooltipDraw', args); |
| 8723 |
}, |
| 8724 |
afterEvent(chart, args) { |
| 8725 |
if (chart.tooltip) { |
| 8726 |
const useFinalPosition = args.replay; |
| 8727 |
if (chart.tooltip.handleEvent(args.event, useFinalPosition)) { |
| 8728 |
args.changed = true; |
| 8729 |
} |
| 8730 |
} |
| 8731 |
}, |
| 8732 |
defaults: { |
| 8733 |
enabled: true, |
| 8734 |
external: null, |
| 8735 |
position: 'average', |
| 8736 |
backgroundColor: 'rgba(0,0,0,0.8)', |
| 8737 |
titleColor: '#fff', |
| 8738 |
titleFont: { |
| 8739 |
weight: 'bold', |
| 8740 |
}, |
| 8741 |
titleSpacing: 2, |
| 8742 |
titleMarginBottom: 6, |
| 8743 |
titleAlign: 'left', |
| 8744 |
bodyColor: '#fff', |
| 8745 |
bodySpacing: 2, |
| 8746 |
bodyFont: { |
| 8747 |
}, |
| 8748 |
bodyAlign: 'left', |
| 8749 |
footerColor: '#fff', |
| 8750 |
footerSpacing: 2, |
| 8751 |
footerMarginTop: 6, |
| 8752 |
footerFont: { |
| 8753 |
weight: 'bold', |
| 8754 |
}, |
| 8755 |
footerAlign: 'left', |
| 8756 |
padding: 6, |
| 8757 |
caretPadding: 2, |
| 8758 |
caretSize: 5, |
| 8759 |
cornerRadius: 6, |
| 8760 |
boxHeight: (ctx, opts) => opts.bodyFont.size, |
| 8761 |
boxWidth: (ctx, opts) => opts.bodyFont.size, |
| 8762 |
multiKeyBackground: '#fff', |
| 8763 |
displayColors: true, |
| 8764 |
borderColor: 'rgba(0,0,0,0)', |
| 8765 |
borderWidth: 0, |
| 8766 |
animation: { |
| 8767 |
duration: 400, |
| 8768 |
easing: 'easeOutQuart', |
| 8769 |
}, |
| 8770 |
animations: { |
| 8771 |
numbers: { |
| 8772 |
type: 'number', |
| 8773 |
properties: ['x', 'y', 'width', 'height', 'caretX', 'caretY'], |
| 8774 |
}, |
| 8775 |
opacity: { |
| 8776 |
easing: 'linear', |
| 8777 |
duration: 200 |
| 8778 |
} |
| 8779 |
}, |
| 8780 |
callbacks: { |
| 8781 |
beforeTitle: noop, |
| 8782 |
title(tooltipItems) { |
| 8783 |
if (tooltipItems.length > 0) { |
| 8784 |
const item = tooltipItems[0]; |
| 8785 |
const labels = item.chart.data.labels; |
| 8786 |
const labelCount = labels ? labels.length : 0; |
| 8787 |
if (this && this.options && this.options.mode === 'dataset') { |
| 8788 |
return item.dataset.label || ''; |
| 8789 |
} else if (item.label) { |
| 8790 |
return item.label; |
| 8791 |
} else if (labelCount > 0 && item.dataIndex < labelCount) { |
| 8792 |
return labels[item.dataIndex]; |
| 8793 |
} |
| 8794 |
} |
| 8795 |
return ''; |
| 8796 |
}, |
| 8797 |
afterTitle: noop, |
| 8798 |
beforeBody: noop, |
| 8799 |
beforeLabel: noop, |
| 8800 |
label(tooltipItem) { |
| 8801 |
if (this && this.options && this.options.mode === 'dataset') { |
| 8802 |
return tooltipItem.label + ': ' + tooltipItem.formattedValue || tooltipItem.formattedValue; |
| 8803 |
} |
| 8804 |
let label = tooltipItem.dataset.label || ''; |
| 8805 |
if (label) { |
| 8806 |
label += ': '; |
| 8807 |
} |
| 8808 |
const value = tooltipItem.formattedValue; |
| 8809 |
if (!isNullOrUndef(value)) { |
| 8810 |
label += value; |
| 8811 |
} |
| 8812 |
return label; |
| 8813 |
}, |
| 8814 |
labelColor(tooltipItem) { |
| 8815 |
const meta = tooltipItem.chart.getDatasetMeta(tooltipItem.datasetIndex); |
| 8816 |
const options = meta.controller.getStyle(tooltipItem.dataIndex); |
| 8817 |
return { |
| 8818 |
borderColor: options.borderColor, |
| 8819 |
backgroundColor: options.backgroundColor, |
| 8820 |
borderWidth: options.borderWidth, |
| 8821 |
borderDash: options.borderDash, |
| 8822 |
borderDashOffset: options.borderDashOffset, |
| 8823 |
borderRadius: 0, |
| 8824 |
}; |
| 8825 |
}, |
| 8826 |
labelTextColor() { |
| 8827 |
return this.options.bodyColor; |
| 8828 |
}, |
| 8829 |
labelPointStyle(tooltipItem) { |
| 8830 |
const meta = tooltipItem.chart.getDatasetMeta(tooltipItem.datasetIndex); |
| 8831 |
const options = meta.controller.getStyle(tooltipItem.dataIndex); |
| 8832 |
return { |
| 8833 |
pointStyle: options.pointStyle, |
| 8834 |
rotation: options.rotation, |
| 8835 |
}; |
| 8836 |
}, |
| 8837 |
afterLabel: noop, |
| 8838 |
afterBody: noop, |
| 8839 |
beforeFooter: noop, |
| 8840 |
footer: noop, |
| 8841 |
afterFooter: noop |
| 8842 |
} |
| 8843 |
}, |
| 8844 |
defaultRoutes: { |
| 8845 |
bodyFont: 'font', |
| 8846 |
footerFont: 'font', |
| 8847 |
titleFont: 'font' |
| 8848 |
}, |
| 8849 |
descriptors: { |
| 8850 |
_scriptable: (name) => name !== 'filter' && name !== 'itemSort' && name !== 'external', |
| 8851 |
_indexable: false, |
| 8852 |
callbacks: { |
| 8853 |
_scriptable: false, |
| 8854 |
_indexable: false, |
| 8855 |
}, |
| 8856 |
animation: { |
| 8857 |
_fallback: false |
| 8858 |
}, |
| 8859 |
animations: { |
| 8860 |
_fallback: 'animation' |
| 8861 |
} |
| 8862 |
}, |
| 8863 |
additionalOptionScopes: ['interaction'] |
| 8864 |
}; |
| 8865 |
|
| 8866 |
var plugins = /*#__PURE__*/Object.freeze({ |
| 8867 |
__proto__: null, |
| 8868 |
Decimation: plugin_decimation, |
| 8869 |
Filler: plugin_filler, |
| 8870 |
Legend: plugin_legend, |
| 8871 |
Title: plugin_title, |
| 8872 |
Tooltip: plugin_tooltip |
| 8873 |
}); |
| 8874 |
|
| 8875 |
const addIfString = (labels, raw, index) => typeof raw === 'string' |
| 8876 |
? labels.push(raw) - 1 |
| 8877 |
: isNaN(raw) ? null : index; |
| 8878 |
function findOrAddLabel(labels, raw, index) { |
| 8879 |
const first = labels.indexOf(raw); |
| 8880 |
if (first === -1) { |
| 8881 |
return addIfString(labels, raw, index); |
| 8882 |
} |
| 8883 |
const last = labels.lastIndexOf(raw); |
| 8884 |
return first !== last ? index : first; |
| 8885 |
} |
| 8886 |
const validIndex = (index, max) => index === null ? null : _limitValue(Math.round(index), 0, max); |
| 8887 |
class CategoryScale extends Scale { |
| 8888 |
constructor(cfg) { |
| 8889 |
super(cfg); |
| 8890 |
this._startValue = undefined; |
| 8891 |
this._valueRange = 0; |
| 8892 |
} |
| 8893 |
parse(raw, index) { |
| 8894 |
if (isNullOrUndef(raw)) { |
| 8895 |
return null; |
| 8896 |
} |
| 8897 |
const labels = this.getLabels(); |
| 8898 |
index = isFinite(index) && labels[index] === raw ? index |
| 8899 |
: findOrAddLabel(labels, raw, valueOrDefault(index, raw)); |
| 8900 |
return validIndex(index, labels.length - 1); |
| 8901 |
} |
| 8902 |
determineDataLimits() { |
| 8903 |
const me = this; |
| 8904 |
const {minDefined, maxDefined} = me.getUserBounds(); |
| 8905 |
let {min, max} = me.getMinMax(true); |
| 8906 |
if (me.options.bounds === 'ticks') { |
| 8907 |
if (!minDefined) { |
| 8908 |
min = 0; |
| 8909 |
} |
| 8910 |
if (!maxDefined) { |
| 8911 |
max = me.getLabels().length - 1; |
| 8912 |
} |
| 8913 |
} |
| 8914 |
me.min = min; |
| 8915 |
me.max = max; |
| 8916 |
} |
| 8917 |
buildTicks() { |
| 8918 |
const me = this; |
| 8919 |
const min = me.min; |
| 8920 |
const max = me.max; |
| 8921 |
const offset = me.options.offset; |
| 8922 |
const ticks = []; |
| 8923 |
let labels = me.getLabels(); |
| 8924 |
labels = (min === 0 && max === labels.length - 1) ? labels : labels.slice(min, max + 1); |
| 8925 |
me._valueRange = Math.max(labels.length - (offset ? 0 : 1), 1); |
| 8926 |
me._startValue = me.min - (offset ? 0.5 : 0); |
| 8927 |
for (let value = min; value <= max; value++) { |
| 8928 |
ticks.push({value}); |
| 8929 |
} |
| 8930 |
return ticks; |
| 8931 |
} |
| 8932 |
getLabelForValue(value) { |
| 8933 |
const me = this; |
| 8934 |
const labels = me.getLabels(); |
| 8935 |
if (value >= 0 && value < labels.length) { |
| 8936 |
return labels[value]; |
| 8937 |
} |
| 8938 |
return value; |
| 8939 |
} |
| 8940 |
configure() { |
| 8941 |
const me = this; |
| 8942 |
super.configure(); |
| 8943 |
if (!me.isHorizontal()) { |
| 8944 |
me._reversePixels = !me._reversePixels; |
| 8945 |
} |
| 8946 |
} |
| 8947 |
getPixelForValue(value) { |
| 8948 |
const me = this; |
| 8949 |
if (typeof value !== 'number') { |
| 8950 |
value = me.parse(value); |
| 8951 |
} |
| 8952 |
return value === null ? NaN : me.getPixelForDecimal((value - me._startValue) / me._valueRange); |
| 8953 |
} |
| 8954 |
getPixelForTick(index) { |
| 8955 |
const me = this; |
| 8956 |
const ticks = me.ticks; |
| 8957 |
if (index < 0 || index > ticks.length - 1) { |
| 8958 |
return null; |
| 8959 |
} |
| 8960 |
return me.getPixelForValue(ticks[index].value); |
| 8961 |
} |
| 8962 |
getValueForPixel(pixel) { |
| 8963 |
const me = this; |
| 8964 |
return Math.round(me._startValue + me.getDecimalForPixel(pixel) * me._valueRange); |
| 8965 |
} |
| 8966 |
getBasePixel() { |
| 8967 |
return this.bottom; |
| 8968 |
} |
| 8969 |
} |
| 8970 |
CategoryScale.id = 'category'; |
| 8971 |
CategoryScale.defaults = { |
| 8972 |
ticks: { |
| 8973 |
callback: CategoryScale.prototype.getLabelForValue |
| 8974 |
} |
| 8975 |
}; |
| 8976 |
|
| 8977 |
function generateTicks$1(generationOptions, dataRange) { |
| 8978 |
const ticks = []; |
| 8979 |
const MIN_SPACING = 1e-14; |
| 8980 |
const {step, min, max, precision, count, maxTicks} = generationOptions; |
| 8981 |
const unit = step || 1; |
| 8982 |
const maxSpaces = maxTicks - 1; |
| 8983 |
const {min: rmin, max: rmax} = dataRange; |
| 8984 |
const minDefined = !isNullOrUndef(min); |
| 8985 |
const maxDefined = !isNullOrUndef(max); |
| 8986 |
const countDefined = !isNullOrUndef(count); |
| 8987 |
let spacing = niceNum((rmax - rmin) / maxSpaces / unit) * unit; |
| 8988 |
let factor, niceMin, niceMax, numSpaces; |
| 8989 |
if (spacing < MIN_SPACING && !minDefined && !maxDefined) { |
| 8990 |
return [{value: rmin}, {value: rmax}]; |
| 8991 |
} |
| 8992 |
numSpaces = Math.ceil(rmax / spacing) - Math.floor(rmin / spacing); |
| 8993 |
if (numSpaces > maxSpaces) { |
| 8994 |
spacing = niceNum(numSpaces * spacing / maxSpaces / unit) * unit; |
| 8995 |
} |
| 8996 |
if (!isNullOrUndef(precision)) { |
| 8997 |
factor = Math.pow(10, precision); |
| 8998 |
spacing = Math.ceil(spacing * factor) / factor; |
| 8999 |
} |
| 9000 |
niceMin = Math.floor(rmin / spacing) * spacing; |
| 9001 |
niceMax = Math.ceil(rmax / spacing) * spacing; |
| 9002 |
if (minDefined && maxDefined && step && almostWhole((max - min) / step, spacing / 1000)) { |
| 9003 |
numSpaces = Math.min((max - min) / spacing, maxTicks); |
| 9004 |
spacing = (max - min) / numSpaces; |
| 9005 |
niceMin = min; |
| 9006 |
niceMax = max; |
| 9007 |
} else if (countDefined) { |
| 9008 |
niceMin = minDefined ? min : niceMin; |
| 9009 |
niceMax = maxDefined ? max : niceMax; |
| 9010 |
numSpaces = count - 1; |
| 9011 |
spacing = (niceMax - niceMin) / numSpaces; |
| 9012 |
} else { |
| 9013 |
numSpaces = (niceMax - niceMin) / spacing; |
| 9014 |
if (almostEquals(numSpaces, Math.round(numSpaces), spacing / 1000)) { |
| 9015 |
numSpaces = Math.round(numSpaces); |
| 9016 |
} else { |
| 9017 |
numSpaces = Math.ceil(numSpaces); |
| 9018 |
} |
| 9019 |
} |
| 9020 |
factor = Math.pow(10, isNullOrUndef(precision) ? _decimalPlaces(spacing) : precision); |
| 9021 |
niceMin = Math.round(niceMin * factor) / factor; |
| 9022 |
niceMax = Math.round(niceMax * factor) / factor; |
| 9023 |
let j = 0; |
| 9024 |
if (minDefined) { |
| 9025 |
ticks.push({value: min}); |
| 9026 |
if (niceMin <= min) { |
| 9027 |
j++; |
| 9028 |
} |
| 9029 |
if (almostEquals(Math.round((niceMin + j * spacing) * factor) / factor, min, spacing / 10)) { |
| 9030 |
j++; |
| 9031 |
} |
| 9032 |
} |
| 9033 |
for (; j < numSpaces; ++j) { |
| 9034 |
ticks.push({value: Math.round((niceMin + j * spacing) * factor) / factor}); |
| 9035 |
} |
| 9036 |
if (maxDefined) { |
| 9037 |
if (almostEquals(ticks[ticks.length - 1].value, max, spacing / 10)) { |
| 9038 |
ticks[ticks.length - 1].value = max; |
| 9039 |
} else { |
| 9040 |
ticks.push({value: max}); |
| 9041 |
} |
| 9042 |
} else { |
| 9043 |
ticks.push({value: niceMax}); |
| 9044 |
} |
| 9045 |
return ticks; |
| 9046 |
} |
| 9047 |
class LinearScaleBase extends Scale { |
| 9048 |
constructor(cfg) { |
| 9049 |
super(cfg); |
| 9050 |
this.start = undefined; |
| 9051 |
this.end = undefined; |
| 9052 |
this._startValue = undefined; |
| 9053 |
this._endValue = undefined; |
| 9054 |
this._valueRange = 0; |
| 9055 |
} |
| 9056 |
parse(raw, index) { |
| 9057 |
if (isNullOrUndef(raw)) { |
| 9058 |
return null; |
| 9059 |
} |
| 9060 |
if ((typeof raw === 'number' || raw instanceof Number) && !isFinite(+raw)) { |
| 9061 |
return null; |
| 9062 |
} |
| 9063 |
return +raw; |
| 9064 |
} |
| 9065 |
handleTickRangeOptions() { |
| 9066 |
const me = this; |
| 9067 |
const {beginAtZero, stacked} = me.options; |
| 9068 |
const {minDefined, maxDefined} = me.getUserBounds(); |
| 9069 |
let {min, max} = me; |
| 9070 |
const setMin = v => (min = minDefined ? min : v); |
| 9071 |
const setMax = v => (max = maxDefined ? max : v); |
| 9072 |
if (beginAtZero || stacked) { |
| 9073 |
const minSign = sign(min); |
| 9074 |
const maxSign = sign(max); |
| 9075 |
if (minSign < 0 && maxSign < 0) { |
| 9076 |
setMax(0); |
| 9077 |
} else if (minSign > 0 && maxSign > 0) { |
| 9078 |
setMin(0); |
| 9079 |
} |
| 9080 |
} |
| 9081 |
if (min === max) { |
| 9082 |
setMax(max + 1); |
| 9083 |
if (!beginAtZero) { |
| 9084 |
setMin(min - 1); |
| 9085 |
} |
| 9086 |
} |
| 9087 |
me.min = min; |
| 9088 |
me.max = max; |
| 9089 |
} |
| 9090 |
getTickLimit() { |
| 9091 |
const me = this; |
| 9092 |
const tickOpts = me.options.ticks; |
| 9093 |
let {maxTicksLimit, stepSize} = tickOpts; |
| 9094 |
let maxTicks; |
| 9095 |
if (stepSize) { |
| 9096 |
maxTicks = Math.ceil(me.max / stepSize) - Math.floor(me.min / stepSize) + 1; |
| 9097 |
} else { |
| 9098 |
maxTicks = me.computeTickLimit(); |
| 9099 |
maxTicksLimit = maxTicksLimit || 11; |
| 9100 |
} |
| 9101 |
if (maxTicksLimit) { |
| 9102 |
maxTicks = Math.min(maxTicksLimit, maxTicks); |
| 9103 |
} |
| 9104 |
return maxTicks; |
| 9105 |
} |
| 9106 |
computeTickLimit() { |
| 9107 |
return Number.POSITIVE_INFINITY; |
| 9108 |
} |
| 9109 |
buildTicks() { |
| 9110 |
const me = this; |
| 9111 |
const opts = me.options; |
| 9112 |
const tickOpts = opts.ticks; |
| 9113 |
let maxTicks = me.getTickLimit(); |
| 9114 |
maxTicks = Math.max(2, maxTicks); |
| 9115 |
const numericGeneratorOptions = { |
| 9116 |
maxTicks, |
| 9117 |
min: opts.min, |
| 9118 |
max: opts.max, |
| 9119 |
precision: tickOpts.precision, |
| 9120 |
step: tickOpts.stepSize, |
| 9121 |
count: tickOpts.count, |
| 9122 |
}; |
| 9123 |
const dataRange = me._range || me; |
| 9124 |
const ticks = generateTicks$1(numericGeneratorOptions, dataRange); |
| 9125 |
if (opts.bounds === 'ticks') { |
| 9126 |
_setMinAndMaxByKey(ticks, me, 'value'); |
| 9127 |
} |
| 9128 |
if (opts.reverse) { |
| 9129 |
ticks.reverse(); |
| 9130 |
me.start = me.max; |
| 9131 |
me.end = me.min; |
| 9132 |
} else { |
| 9133 |
me.start = me.min; |
| 9134 |
me.end = me.max; |
| 9135 |
} |
| 9136 |
return ticks; |
| 9137 |
} |
| 9138 |
configure() { |
| 9139 |
const me = this; |
| 9140 |
const ticks = me.ticks; |
| 9141 |
let start = me.min; |
| 9142 |
let end = me.max; |
| 9143 |
super.configure(); |
| 9144 |
if (me.options.offset && ticks.length) { |
| 9145 |
const offset = (end - start) / Math.max(ticks.length - 1, 1) / 2; |
| 9146 |
start -= offset; |
| 9147 |
end += offset; |
| 9148 |
} |
| 9149 |
me._startValue = start; |
| 9150 |
me._endValue = end; |
| 9151 |
me._valueRange = end - start; |
| 9152 |
} |
| 9153 |
getLabelForValue(value) { |
| 9154 |
return formatNumber(value, this.chart.options.locale); |
| 9155 |
} |
| 9156 |
} |
| 9157 |
|
| 9158 |
class LinearScale extends LinearScaleBase { |
| 9159 |
determineDataLimits() { |
| 9160 |
const me = this; |
| 9161 |
const {min, max} = me.getMinMax(true); |
| 9162 |
me.min = isNumberFinite(min) ? min : 0; |
| 9163 |
me.max = isNumberFinite(max) ? max : 1; |
| 9164 |
me.handleTickRangeOptions(); |
| 9165 |
} |
| 9166 |
computeTickLimit() { |
| 9167 |
const me = this; |
| 9168 |
if (me.isHorizontal()) { |
| 9169 |
return Math.ceil(me.width / 40); |
| 9170 |
} |
| 9171 |
const tickFont = me._resolveTickFontOptions(0); |
| 9172 |
return Math.ceil(me.height / tickFont.lineHeight); |
| 9173 |
} |
| 9174 |
getPixelForValue(value) { |
| 9175 |
return value === null ? NaN : this.getPixelForDecimal((value - this._startValue) / this._valueRange); |
| 9176 |
} |
| 9177 |
getValueForPixel(pixel) { |
| 9178 |
return this._startValue + this.getDecimalForPixel(pixel) * this._valueRange; |
| 9179 |
} |
| 9180 |
} |
| 9181 |
LinearScale.id = 'linear'; |
| 9182 |
LinearScale.defaults = { |
| 9183 |
ticks: { |
| 9184 |
callback: Ticks.formatters.numeric |
| 9185 |
} |
| 9186 |
}; |
| 9187 |
|
| 9188 |
function isMajor(tickVal) { |
| 9189 |
const remain = tickVal / (Math.pow(10, Math.floor(log10(tickVal)))); |
| 9190 |
return remain === 1; |
| 9191 |
} |
| 9192 |
function generateTicks(generationOptions, dataRange) { |
| 9193 |
const endExp = Math.floor(log10(dataRange.max)); |
| 9194 |
const endSignificand = Math.ceil(dataRange.max / Math.pow(10, endExp)); |
| 9195 |
const ticks = []; |
| 9196 |
let tickVal = finiteOrDefault(generationOptions.min, Math.pow(10, Math.floor(log10(dataRange.min)))); |
| 9197 |
let exp = Math.floor(log10(tickVal)); |
| 9198 |
let significand = Math.floor(tickVal / Math.pow(10, exp)); |
| 9199 |
let precision = exp < 0 ? Math.pow(10, Math.abs(exp)) : 1; |
| 9200 |
do { |
| 9201 |
ticks.push({value: tickVal, major: isMajor(tickVal)}); |
| 9202 |
++significand; |
| 9203 |
if (significand === 10) { |
| 9204 |
significand = 1; |
| 9205 |
++exp; |
| 9206 |
precision = exp >= 0 ? 1 : precision; |
| 9207 |
} |
| 9208 |
tickVal = Math.round(significand * Math.pow(10, exp) * precision) / precision; |
| 9209 |
} while (exp < endExp || (exp === endExp && significand < endSignificand)); |
| 9210 |
const lastTick = finiteOrDefault(generationOptions.max, tickVal); |
| 9211 |
ticks.push({value: lastTick, major: isMajor(tickVal)}); |
| 9212 |
return ticks; |
| 9213 |
} |
| 9214 |
class LogarithmicScale extends Scale { |
| 9215 |
constructor(cfg) { |
| 9216 |
super(cfg); |
| 9217 |
this.start = undefined; |
| 9218 |
this.end = undefined; |
| 9219 |
this._startValue = undefined; |
| 9220 |
this._valueRange = 0; |
| 9221 |
} |
| 9222 |
parse(raw, index) { |
| 9223 |
const value = LinearScaleBase.prototype.parse.apply(this, [raw, index]); |
| 9224 |
if (value === 0) { |
| 9225 |
this._zero = true; |
| 9226 |
return undefined; |
| 9227 |
} |
| 9228 |
return isNumberFinite(value) && value > 0 ? value : null; |
| 9229 |
} |
| 9230 |
determineDataLimits() { |
| 9231 |
const me = this; |
| 9232 |
const {min, max} = me.getMinMax(true); |
| 9233 |
me.min = isNumberFinite(min) ? Math.max(0, min) : null; |
| 9234 |
me.max = isNumberFinite(max) ? Math.max(0, max) : null; |
| 9235 |
if (me.options.beginAtZero) { |
| 9236 |
me._zero = true; |
| 9237 |
} |
| 9238 |
me.handleTickRangeOptions(); |
| 9239 |
} |
| 9240 |
handleTickRangeOptions() { |
| 9241 |
const me = this; |
| 9242 |
const {minDefined, maxDefined} = me.getUserBounds(); |
| 9243 |
let min = me.min; |
| 9244 |
let max = me.max; |
| 9245 |
const setMin = v => (min = minDefined ? min : v); |
| 9246 |
const setMax = v => (max = maxDefined ? max : v); |
| 9247 |
const exp = (v, m) => Math.pow(10, Math.floor(log10(v)) + m); |
| 9248 |
if (min === max) { |
| 9249 |
if (min <= 0) { |
| 9250 |
setMin(1); |
| 9251 |
setMax(10); |
| 9252 |
} else { |
| 9253 |
setMin(exp(min, -1)); |
| 9254 |
setMax(exp(max, +1)); |
| 9255 |
} |
| 9256 |
} |
| 9257 |
if (min <= 0) { |
| 9258 |
setMin(exp(max, -1)); |
| 9259 |
} |
| 9260 |
if (max <= 0) { |
| 9261 |
setMax(exp(min, +1)); |
| 9262 |
} |
| 9263 |
if (me._zero && me.min !== me._suggestedMin && min === exp(me.min, 0)) { |
| 9264 |
setMin(exp(min, -1)); |
| 9265 |
} |
| 9266 |
me.min = min; |
| 9267 |
me.max = max; |
| 9268 |
} |
| 9269 |
buildTicks() { |
| 9270 |
const me = this; |
| 9271 |
const opts = me.options; |
| 9272 |
const generationOptions = { |
| 9273 |
min: me._userMin, |
| 9274 |
max: me._userMax |
| 9275 |
}; |
| 9276 |
const ticks = generateTicks(generationOptions, me); |
| 9277 |
if (opts.bounds === 'ticks') { |
| 9278 |
_setMinAndMaxByKey(ticks, me, 'value'); |
| 9279 |
} |
| 9280 |
if (opts.reverse) { |
| 9281 |
ticks.reverse(); |
| 9282 |
me.start = me.max; |
| 9283 |
me.end = me.min; |
| 9284 |
} else { |
| 9285 |
me.start = me.min; |
| 9286 |
me.end = me.max; |
| 9287 |
} |
| 9288 |
return ticks; |
| 9289 |
} |
| 9290 |
getLabelForValue(value) { |
| 9291 |
return value === undefined ? '0' : formatNumber(value, this.chart.options.locale); |
| 9292 |
} |
| 9293 |
configure() { |
| 9294 |
const me = this; |
| 9295 |
const start = me.min; |
| 9296 |
super.configure(); |
| 9297 |
me._startValue = log10(start); |
| 9298 |
me._valueRange = log10(me.max) - log10(start); |
| 9299 |
} |
| 9300 |
getPixelForValue(value) { |
| 9301 |
const me = this; |
| 9302 |
if (value === undefined || value === 0) { |
| 9303 |
value = me.min; |
| 9304 |
} |
| 9305 |
if (value === null || isNaN(value)) { |
| 9306 |
return NaN; |
| 9307 |
} |
| 9308 |
return me.getPixelForDecimal(value === me.min |
| 9309 |
? 0 |
| 9310 |
: (log10(value) - me._startValue) / me._valueRange); |
| 9311 |
} |
| 9312 |
getValueForPixel(pixel) { |
| 9313 |
const me = this; |
| 9314 |
const decimal = me.getDecimalForPixel(pixel); |
| 9315 |
return Math.pow(10, me._startValue + decimal * me._valueRange); |
| 9316 |
} |
| 9317 |
} |
| 9318 |
LogarithmicScale.id = 'logarithmic'; |
| 9319 |
LogarithmicScale.defaults = { |
| 9320 |
ticks: { |
| 9321 |
callback: Ticks.formatters.logarithmic, |
| 9322 |
major: { |
| 9323 |
enabled: true |
| 9324 |
} |
| 9325 |
} |
| 9326 |
}; |
| 9327 |
|
| 9328 |
function getTickBackdropHeight(opts) { |
| 9329 |
const tickOpts = opts.ticks; |
| 9330 |
if (tickOpts.display && opts.display) { |
| 9331 |
const padding = toPadding(tickOpts.backdropPadding); |
| 9332 |
return valueOrDefault(tickOpts.font && tickOpts.font.size, defaults.font.size) + padding.height; |
| 9333 |
} |
| 9334 |
return 0; |
| 9335 |
} |
| 9336 |
function measureLabelSize(ctx, lineHeight, label) { |
| 9337 |
if (isArray(label)) { |
| 9338 |
return { |
| 9339 |
w: _longestText(ctx, ctx.font, label), |
| 9340 |
h: label.length * lineHeight |
| 9341 |
}; |
| 9342 |
} |
| 9343 |
return { |
| 9344 |
w: ctx.measureText(label).width, |
| 9345 |
h: lineHeight |
| 9346 |
}; |
| 9347 |
} |
| 9348 |
function determineLimits(angle, pos, size, min, max) { |
| 9349 |
if (angle === min || angle === max) { |
| 9350 |
return { |
| 9351 |
start: pos - (size / 2), |
| 9352 |
end: pos + (size / 2) |
| 9353 |
}; |
| 9354 |
} else if (angle < min || angle > max) { |
| 9355 |
return { |
| 9356 |
start: pos - size, |
| 9357 |
end: pos |
| 9358 |
}; |
| 9359 |
} |
| 9360 |
return { |
| 9361 |
start: pos, |
| 9362 |
end: pos + size |
| 9363 |
}; |
| 9364 |
} |
| 9365 |
function fitWithPointLabels(scale) { |
| 9366 |
const furthestLimits = { |
| 9367 |
l: 0, |
| 9368 |
r: scale.width, |
| 9369 |
t: 0, |
| 9370 |
b: scale.height - scale.paddingTop |
| 9371 |
}; |
| 9372 |
const furthestAngles = {}; |
| 9373 |
let i, textSize, pointPosition; |
| 9374 |
const labelSizes = []; |
| 9375 |
const padding = []; |
| 9376 |
const valueCount = scale.getLabels().length; |
| 9377 |
for (i = 0; i < valueCount; i++) { |
| 9378 |
const opts = scale.options.pointLabels.setContext(scale.getContext(i)); |
| 9379 |
padding[i] = opts.padding; |
| 9380 |
pointPosition = scale.getPointPosition(i, scale.drawingArea + padding[i]); |
| 9381 |
const plFont = toFont(opts.font); |
| 9382 |
scale.ctx.font = plFont.string; |
| 9383 |
textSize = measureLabelSize(scale.ctx, plFont.lineHeight, scale._pointLabels[i]); |
| 9384 |
labelSizes[i] = textSize; |
| 9385 |
const angleRadians = scale.getIndexAngle(i); |
| 9386 |
const angle = toDegrees(angleRadians); |
| 9387 |
const hLimits = determineLimits(angle, pointPosition.x, textSize.w, 0, 180); |
| 9388 |
const vLimits = determineLimits(angle, pointPosition.y, textSize.h, 90, 270); |
| 9389 |
if (hLimits.start < furthestLimits.l) { |
| 9390 |
furthestLimits.l = hLimits.start; |
| 9391 |
furthestAngles.l = angleRadians; |
| 9392 |
} |
| 9393 |
if (hLimits.end > furthestLimits.r) { |
| 9394 |
furthestLimits.r = hLimits.end; |
| 9395 |
furthestAngles.r = angleRadians; |
| 9396 |
} |
| 9397 |
if (vLimits.start < furthestLimits.t) { |
| 9398 |
furthestLimits.t = vLimits.start; |
| 9399 |
furthestAngles.t = angleRadians; |
| 9400 |
} |
| 9401 |
if (vLimits.end > furthestLimits.b) { |
| 9402 |
furthestLimits.b = vLimits.end; |
| 9403 |
furthestAngles.b = angleRadians; |
| 9404 |
} |
| 9405 |
} |
| 9406 |
scale._setReductions(scale.drawingArea, furthestLimits, furthestAngles); |
| 9407 |
scale._pointLabelItems = []; |
| 9408 |
const opts = scale.options; |
| 9409 |
const tickBackdropHeight = getTickBackdropHeight(opts); |
| 9410 |
const outerDistance = scale.getDistanceFromCenterForValue(opts.ticks.reverse ? scale.min : scale.max); |
| 9411 |
for (i = 0; i < valueCount; i++) { |
| 9412 |
const extra = (i === 0 ? tickBackdropHeight / 2 : 0); |
| 9413 |
const pointLabelPosition = scale.getPointPosition(i, outerDistance + extra + padding[i]); |
| 9414 |
const angle = toDegrees(scale.getIndexAngle(i)); |
| 9415 |
const size = labelSizes[i]; |
| 9416 |
adjustPointPositionForLabelHeight(angle, size, pointLabelPosition); |
| 9417 |
const textAlign = getTextAlignForAngle(angle); |
| 9418 |
let left; |
| 9419 |
if (textAlign === 'left') { |
| 9420 |
left = pointLabelPosition.x; |
| 9421 |
} else if (textAlign === 'center') { |
| 9422 |
left = pointLabelPosition.x - (size.w / 2); |
| 9423 |
} else { |
| 9424 |
left = pointLabelPosition.x - size.w; |
| 9425 |
} |
| 9426 |
const right = left + size.w; |
| 9427 |
scale._pointLabelItems[i] = { |
| 9428 |
x: pointLabelPosition.x, |
| 9429 |
y: pointLabelPosition.y, |
| 9430 |
textAlign, |
| 9431 |
left, |
| 9432 |
top: pointLabelPosition.y, |
| 9433 |
right, |
| 9434 |
bottom: pointLabelPosition.y + size.h, |
| 9435 |
}; |
| 9436 |
} |
| 9437 |
} |
| 9438 |
function getTextAlignForAngle(angle) { |
| 9439 |
if (angle === 0 || angle === 180) { |
| 9440 |
return 'center'; |
| 9441 |
} else if (angle < 180) { |
| 9442 |
return 'left'; |
| 9443 |
} |
| 9444 |
return 'right'; |
| 9445 |
} |
| 9446 |
function adjustPointPositionForLabelHeight(angle, textSize, position) { |
| 9447 |
if (angle === 90 || angle === 270) { |
| 9448 |
position.y -= (textSize.h / 2); |
| 9449 |
} else if (angle > 270 || angle < 90) { |
| 9450 |
position.y -= textSize.h; |
| 9451 |
} |
| 9452 |
} |
| 9453 |
function drawPointLabels(scale, labelCount) { |
| 9454 |
const {ctx, options: {pointLabels}} = scale; |
| 9455 |
for (let i = labelCount - 1; i >= 0; i--) { |
| 9456 |
const optsAtIndex = pointLabels.setContext(scale.getContext(i)); |
| 9457 |
const plFont = toFont(optsAtIndex.font); |
| 9458 |
const {x, y, textAlign, left, top, right, bottom} = scale._pointLabelItems[i]; |
| 9459 |
const {backdropColor} = optsAtIndex; |
| 9460 |
if (!isNullOrUndef(backdropColor)) { |
| 9461 |
const padding = toPadding(optsAtIndex.backdropPadding); |
| 9462 |
ctx.fillStyle = backdropColor; |
| 9463 |
ctx.fillRect(left - padding.left, top - padding.top, right - left + padding.width, bottom - top + padding.height); |
| 9464 |
} |
| 9465 |
renderText( |
| 9466 |
ctx, |
| 9467 |
scale._pointLabels[i], |
| 9468 |
x, |
| 9469 |
y + (plFont.lineHeight / 2), |
| 9470 |
plFont, |
| 9471 |
{ |
| 9472 |
color: optsAtIndex.color, |
| 9473 |
textAlign: textAlign, |
| 9474 |
textBaseline: 'middle' |
| 9475 |
} |
| 9476 |
); |
| 9477 |
} |
| 9478 |
} |
| 9479 |
function pathRadiusLine(scale, radius, circular, labelCount) { |
| 9480 |
const {ctx} = scale; |
| 9481 |
if (circular) { |
| 9482 |
ctx.arc(scale.xCenter, scale.yCenter, radius, 0, TAU); |
| 9483 |
} else { |
| 9484 |
let pointPosition = scale.getPointPosition(0, radius); |
| 9485 |
ctx.moveTo(pointPosition.x, pointPosition.y); |
| 9486 |
for (let i = 1; i < labelCount; i++) { |
| 9487 |
pointPosition = scale.getPointPosition(i, radius); |
| 9488 |
ctx.lineTo(pointPosition.x, pointPosition.y); |
| 9489 |
} |
| 9490 |
} |
| 9491 |
} |
| 9492 |
function drawRadiusLine(scale, gridLineOpts, radius, labelCount) { |
| 9493 |
const ctx = scale.ctx; |
| 9494 |
const circular = gridLineOpts.circular; |
| 9495 |
const {color, lineWidth} = gridLineOpts; |
| 9496 |
if ((!circular && !labelCount) || !color || !lineWidth || radius < 0) { |
| 9497 |
return; |
| 9498 |
} |
| 9499 |
ctx.save(); |
| 9500 |
ctx.strokeStyle = color; |
| 9501 |
ctx.lineWidth = lineWidth; |
| 9502 |
ctx.setLineDash(gridLineOpts.borderDash); |
| 9503 |
ctx.lineDashOffset = gridLineOpts.borderDashOffset; |
| 9504 |
ctx.beginPath(); |
| 9505 |
pathRadiusLine(scale, radius, circular, labelCount); |
| 9506 |
ctx.closePath(); |
| 9507 |
ctx.stroke(); |
| 9508 |
ctx.restore(); |
| 9509 |
} |
| 9510 |
function numberOrZero(param) { |
| 9511 |
return isNumber(param) ? param : 0; |
| 9512 |
} |
| 9513 |
class RadialLinearScale extends LinearScaleBase { |
| 9514 |
constructor(cfg) { |
| 9515 |
super(cfg); |
| 9516 |
this.xCenter = undefined; |
| 9517 |
this.yCenter = undefined; |
| 9518 |
this.drawingArea = undefined; |
| 9519 |
this._pointLabels = []; |
| 9520 |
this._pointLabelItems = []; |
| 9521 |
} |
| 9522 |
setDimensions() { |
| 9523 |
const me = this; |
| 9524 |
me.width = me.maxWidth; |
| 9525 |
me.height = me.maxHeight; |
| 9526 |
me.paddingTop = getTickBackdropHeight(me.options) / 2; |
| 9527 |
me.xCenter = Math.floor(me.width / 2); |
| 9528 |
me.yCenter = Math.floor((me.height - me.paddingTop) / 2); |
| 9529 |
me.drawingArea = Math.min(me.height - me.paddingTop, me.width) / 2; |
| 9530 |
} |
| 9531 |
determineDataLimits() { |
| 9532 |
const me = this; |
| 9533 |
const {min, max} = me.getMinMax(false); |
| 9534 |
me.min = isNumberFinite(min) && !isNaN(min) ? min : 0; |
| 9535 |
me.max = isNumberFinite(max) && !isNaN(max) ? max : 0; |
| 9536 |
me.handleTickRangeOptions(); |
| 9537 |
} |
| 9538 |
computeTickLimit() { |
| 9539 |
return Math.ceil(this.drawingArea / getTickBackdropHeight(this.options)); |
| 9540 |
} |
| 9541 |
generateTickLabels(ticks) { |
| 9542 |
const me = this; |
| 9543 |
LinearScaleBase.prototype.generateTickLabels.call(me, ticks); |
| 9544 |
me._pointLabels = me.getLabels().map((value, index) => { |
| 9545 |
const label = callback(me.options.pointLabels.callback, [value, index], me); |
| 9546 |
return label || label === 0 ? label : ''; |
| 9547 |
}); |
| 9548 |
} |
| 9549 |
fit() { |
| 9550 |
const me = this; |
| 9551 |
const opts = me.options; |
| 9552 |
if (opts.display && opts.pointLabels.display) { |
| 9553 |
fitWithPointLabels(me); |
| 9554 |
} else { |
| 9555 |
me.setCenterPoint(0, 0, 0, 0); |
| 9556 |
} |
| 9557 |
} |
| 9558 |
_setReductions(largestPossibleRadius, furthestLimits, furthestAngles) { |
| 9559 |
const me = this; |
| 9560 |
let radiusReductionLeft = furthestLimits.l / Math.sin(furthestAngles.l); |
| 9561 |
let radiusReductionRight = Math.max(furthestLimits.r - me.width, 0) / Math.sin(furthestAngles.r); |
| 9562 |
let radiusReductionTop = -furthestLimits.t / Math.cos(furthestAngles.t); |
| 9563 |
let radiusReductionBottom = -Math.max(furthestLimits.b - (me.height - me.paddingTop), 0) / Math.cos(furthestAngles.b); |
| 9564 |
radiusReductionLeft = numberOrZero(radiusReductionLeft); |
| 9565 |
radiusReductionRight = numberOrZero(radiusReductionRight); |
| 9566 |
radiusReductionTop = numberOrZero(radiusReductionTop); |
| 9567 |
radiusReductionBottom = numberOrZero(radiusReductionBottom); |
| 9568 |
me.drawingArea = Math.max(largestPossibleRadius / 2, Math.min( |
| 9569 |
Math.floor(largestPossibleRadius - (radiusReductionLeft + radiusReductionRight) / 2), |
| 9570 |
Math.floor(largestPossibleRadius - (radiusReductionTop + radiusReductionBottom) / 2))); |
| 9571 |
me.setCenterPoint(radiusReductionLeft, radiusReductionRight, radiusReductionTop, radiusReductionBottom); |
| 9572 |
} |
| 9573 |
setCenterPoint(leftMovement, rightMovement, topMovement, bottomMovement) { |
| 9574 |
const me = this; |
| 9575 |
const maxRight = me.width - rightMovement - me.drawingArea; |
| 9576 |
const maxLeft = leftMovement + me.drawingArea; |
| 9577 |
const maxTop = topMovement + me.drawingArea; |
| 9578 |
const maxBottom = (me.height - me.paddingTop) - bottomMovement - me.drawingArea; |
| 9579 |
me.xCenter = Math.floor(((maxLeft + maxRight) / 2) + me.left); |
| 9580 |
me.yCenter = Math.floor(((maxTop + maxBottom) / 2) + me.top + me.paddingTop); |
| 9581 |
} |
| 9582 |
getIndexAngle(index) { |
| 9583 |
const angleMultiplier = TAU / this.getLabels().length; |
| 9584 |
const startAngle = this.options.startAngle || 0; |
| 9585 |
return _normalizeAngle(index * angleMultiplier + toRadians(startAngle)); |
| 9586 |
} |
| 9587 |
getDistanceFromCenterForValue(value) { |
| 9588 |
const me = this; |
| 9589 |
if (isNullOrUndef(value)) { |
| 9590 |
return NaN; |
| 9591 |
} |
| 9592 |
const scalingFactor = me.drawingArea / (me.max - me.min); |
| 9593 |
if (me.options.reverse) { |
| 9594 |
return (me.max - value) * scalingFactor; |
| 9595 |
} |
| 9596 |
return (value - me.min) * scalingFactor; |
| 9597 |
} |
| 9598 |
getValueForDistanceFromCenter(distance) { |
| 9599 |
if (isNullOrUndef(distance)) { |
| 9600 |
return NaN; |
| 9601 |
} |
| 9602 |
const me = this; |
| 9603 |
const scaledDistance = distance / (me.drawingArea / (me.max - me.min)); |
| 9604 |
return me.options.reverse ? me.max - scaledDistance : me.min + scaledDistance; |
| 9605 |
} |
| 9606 |
getPointPosition(index, distanceFromCenter) { |
| 9607 |
const me = this; |
| 9608 |
const angle = me.getIndexAngle(index) - HALF_PI; |
| 9609 |
return { |
| 9610 |
x: Math.cos(angle) * distanceFromCenter + me.xCenter, |
| 9611 |
y: Math.sin(angle) * distanceFromCenter + me.yCenter, |
| 9612 |
angle |
| 9613 |
}; |
| 9614 |
} |
| 9615 |
getPointPositionForValue(index, value) { |
| 9616 |
return this.getPointPosition(index, this.getDistanceFromCenterForValue(value)); |
| 9617 |
} |
| 9618 |
getBasePosition(index) { |
| 9619 |
return this.getPointPositionForValue(index || 0, this.getBaseValue()); |
| 9620 |
} |
| 9621 |
getPointLabelPosition(index) { |
| 9622 |
const {left, top, right, bottom} = this._pointLabelItems[index]; |
| 9623 |
return { |
| 9624 |
left, |
| 9625 |
top, |
| 9626 |
right, |
| 9627 |
bottom, |
| 9628 |
}; |
| 9629 |
} |
| 9630 |
drawBackground() { |
| 9631 |
const me = this; |
| 9632 |
const {backgroundColor, grid: {circular}} = me.options; |
| 9633 |
if (backgroundColor) { |
| 9634 |
const ctx = me.ctx; |
| 9635 |
ctx.save(); |
| 9636 |
ctx.beginPath(); |
| 9637 |
pathRadiusLine(me, me.getDistanceFromCenterForValue(me._endValue), circular, me.getLabels().length); |
| 9638 |
ctx.closePath(); |
| 9639 |
ctx.fillStyle = backgroundColor; |
| 9640 |
ctx.fill(); |
| 9641 |
ctx.restore(); |
| 9642 |
} |
| 9643 |
} |
| 9644 |
drawGrid() { |
| 9645 |
const me = this; |
| 9646 |
const ctx = me.ctx; |
| 9647 |
const opts = me.options; |
| 9648 |
const {angleLines, grid} = opts; |
| 9649 |
const labelCount = me.getLabels().length; |
| 9650 |
let i, offset, position; |
| 9651 |
if (opts.pointLabels.display) { |
| 9652 |
drawPointLabels(me, labelCount); |
| 9653 |
} |
| 9654 |
if (grid.display) { |
| 9655 |
me.ticks.forEach((tick, index) => { |
| 9656 |
if (index !== 0) { |
| 9657 |
offset = me.getDistanceFromCenterForValue(tick.value); |
| 9658 |
const optsAtIndex = grid.setContext(me.getContext(index - 1)); |
| 9659 |
drawRadiusLine(me, optsAtIndex, offset, labelCount); |
| 9660 |
} |
| 9661 |
}); |
| 9662 |
} |
| 9663 |
if (angleLines.display) { |
| 9664 |
ctx.save(); |
| 9665 |
for (i = me.getLabels().length - 1; i >= 0; i--) { |
| 9666 |
const optsAtIndex = angleLines.setContext(me.getContext(i)); |
| 9667 |
const {color, lineWidth} = optsAtIndex; |
| 9668 |
if (!lineWidth || !color) { |
| 9669 |
continue; |
| 9670 |
} |
| 9671 |
ctx.lineWidth = lineWidth; |
| 9672 |
ctx.strokeStyle = color; |
| 9673 |
ctx.setLineDash(optsAtIndex.borderDash); |
| 9674 |
ctx.lineDashOffset = optsAtIndex.borderDashOffset; |
| 9675 |
offset = me.getDistanceFromCenterForValue(opts.ticks.reverse ? me.min : me.max); |
| 9676 |
position = me.getPointPosition(i, offset); |
| 9677 |
ctx.beginPath(); |
| 9678 |
ctx.moveTo(me.xCenter, me.yCenter); |
| 9679 |
ctx.lineTo(position.x, position.y); |
| 9680 |
ctx.stroke(); |
| 9681 |
} |
| 9682 |
ctx.restore(); |
| 9683 |
} |
| 9684 |
} |
| 9685 |
drawBorder() {} |
| 9686 |
drawLabels() { |
| 9687 |
const me = this; |
| 9688 |
const ctx = me.ctx; |
| 9689 |
const opts = me.options; |
| 9690 |
const tickOpts = opts.ticks; |
| 9691 |
if (!tickOpts.display) { |
| 9692 |
return; |
| 9693 |
} |
| 9694 |
const startAngle = me.getIndexAngle(0); |
| 9695 |
let offset, width; |
| 9696 |
ctx.save(); |
| 9697 |
ctx.translate(me.xCenter, me.yCenter); |
| 9698 |
ctx.rotate(startAngle); |
| 9699 |
ctx.textAlign = 'center'; |
| 9700 |
ctx.textBaseline = 'middle'; |
| 9701 |
me.ticks.forEach((tick, index) => { |
| 9702 |
if (index === 0 && !opts.reverse) { |
| 9703 |
return; |
| 9704 |
} |
| 9705 |
const optsAtIndex = tickOpts.setContext(me.getContext(index)); |
| 9706 |
const tickFont = toFont(optsAtIndex.font); |
| 9707 |
offset = me.getDistanceFromCenterForValue(me.ticks[index].value); |
| 9708 |
if (optsAtIndex.showLabelBackdrop) { |
| 9709 |
width = ctx.measureText(tick.label).width; |
| 9710 |
ctx.fillStyle = optsAtIndex.backdropColor; |
| 9711 |
const padding = toPadding(optsAtIndex.backdropPadding); |
| 9712 |
ctx.fillRect( |
| 9713 |
-width / 2 - padding.left, |
| 9714 |
-offset - tickFont.size / 2 - padding.top, |
| 9715 |
width + padding.width, |
| 9716 |
tickFont.size + padding.height |
| 9717 |
); |
| 9718 |
} |
| 9719 |
renderText(ctx, tick.label, 0, -offset, tickFont, { |
| 9720 |
color: optsAtIndex.color, |
| 9721 |
}); |
| 9722 |
}); |
| 9723 |
ctx.restore(); |
| 9724 |
} |
| 9725 |
drawTitle() {} |
| 9726 |
} |
| 9727 |
RadialLinearScale.id = 'radialLinear'; |
| 9728 |
RadialLinearScale.defaults = { |
| 9729 |
display: true, |
| 9730 |
animate: true, |
| 9731 |
position: 'chartArea', |
| 9732 |
angleLines: { |
| 9733 |
display: true, |
| 9734 |
lineWidth: 1, |
| 9735 |
borderDash: [], |
| 9736 |
borderDashOffset: 0.0 |
| 9737 |
}, |
| 9738 |
grid: { |
| 9739 |
circular: false |
| 9740 |
}, |
| 9741 |
startAngle: 0, |
| 9742 |
ticks: { |
| 9743 |
showLabelBackdrop: true, |
| 9744 |
callback: Ticks.formatters.numeric |
| 9745 |
}, |
| 9746 |
pointLabels: { |
| 9747 |
backdropColor: undefined, |
| 9748 |
backdropPadding: 2, |
| 9749 |
display: true, |
| 9750 |
font: { |
| 9751 |
size: 10 |
| 9752 |
}, |
| 9753 |
callback(label) { |
| 9754 |
return label; |
| 9755 |
}, |
| 9756 |
padding: 5 |
| 9757 |
} |
| 9758 |
}; |
| 9759 |
RadialLinearScale.defaultRoutes = { |
| 9760 |
'angleLines.color': 'borderColor', |
| 9761 |
'pointLabels.color': 'color', |
| 9762 |
'ticks.color': 'color' |
| 9763 |
}; |
| 9764 |
RadialLinearScale.descriptors = { |
| 9765 |
angleLines: { |
| 9766 |
_fallback: 'grid' |
| 9767 |
} |
| 9768 |
}; |
| 9769 |
|
| 9770 |
const INTERVALS = { |
| 9771 |
millisecond: {common: true, size: 1, steps: 1000}, |
| 9772 |
second: {common: true, size: 1000, steps: 60}, |
| 9773 |
minute: {common: true, size: 60000, steps: 60}, |
| 9774 |
hour: {common: true, size: 3600000, steps: 24}, |
| 9775 |
day: {common: true, size: 86400000, steps: 30}, |
| 9776 |
week: {common: false, size: 604800000, steps: 4}, |
| 9777 |
month: {common: true, size: 2.628e9, steps: 12}, |
| 9778 |
quarter: {common: false, size: 7.884e9, steps: 4}, |
| 9779 |
year: {common: true, size: 3.154e10} |
| 9780 |
}; |
| 9781 |
const UNITS = (Object.keys(INTERVALS)); |
| 9782 |
function sorter(a, b) { |
| 9783 |
return a - b; |
| 9784 |
} |
| 9785 |
function parse(scale, input) { |
| 9786 |
if (isNullOrUndef(input)) { |
| 9787 |
return null; |
| 9788 |
} |
| 9789 |
const adapter = scale._adapter; |
| 9790 |
const {parser, round, isoWeekday} = scale._parseOpts; |
| 9791 |
let value = input; |
| 9792 |
if (typeof parser === 'function') { |
| 9793 |
value = parser(value); |
| 9794 |
} |
| 9795 |
if (!isNumberFinite(value)) { |
| 9796 |
value = typeof parser === 'string' |
| 9797 |
? adapter.parse(value, parser) |
| 9798 |
: adapter.parse(value); |
| 9799 |
} |
| 9800 |
if (value === null) { |
| 9801 |
return null; |
| 9802 |
} |
| 9803 |
if (round) { |
| 9804 |
value = round === 'week' && (isNumber(isoWeekday) || isoWeekday === true) |
| 9805 |
? adapter.startOf(value, 'isoWeek', isoWeekday) |
| 9806 |
: adapter.startOf(value, round); |
| 9807 |
} |
| 9808 |
return +value; |
| 9809 |
} |
| 9810 |
function determineUnitForAutoTicks(minUnit, min, max, capacity) { |
| 9811 |
const ilen = UNITS.length; |
| 9812 |
for (let i = UNITS.indexOf(minUnit); i < ilen - 1; ++i) { |
| 9813 |
const interval = INTERVALS[UNITS[i]]; |
| 9814 |
const factor = interval.steps ? interval.steps : Number.MAX_SAFE_INTEGER; |
| 9815 |
if (interval.common && Math.ceil((max - min) / (factor * interval.size)) <= capacity) { |
| 9816 |
return UNITS[i]; |
| 9817 |
} |
| 9818 |
} |
| 9819 |
return UNITS[ilen - 1]; |
| 9820 |
} |
| 9821 |
function determineUnitForFormatting(scale, numTicks, minUnit, min, max) { |
| 9822 |
for (let i = UNITS.length - 1; i >= UNITS.indexOf(minUnit); i--) { |
| 9823 |
const unit = UNITS[i]; |
| 9824 |
if (INTERVALS[unit].common && scale._adapter.diff(max, min, unit) >= numTicks - 1) { |
| 9825 |
return unit; |
| 9826 |
} |
| 9827 |
} |
| 9828 |
return UNITS[minUnit ? UNITS.indexOf(minUnit) : 0]; |
| 9829 |
} |
| 9830 |
function determineMajorUnit(unit) { |
| 9831 |
for (let i = UNITS.indexOf(unit) + 1, ilen = UNITS.length; i < ilen; ++i) { |
| 9832 |
if (INTERVALS[UNITS[i]].common) { |
| 9833 |
return UNITS[i]; |
| 9834 |
} |
| 9835 |
} |
| 9836 |
} |
| 9837 |
function addTick(ticks, time, timestamps) { |
| 9838 |
if (!timestamps) { |
| 9839 |
ticks[time] = true; |
| 9840 |
} else if (timestamps.length) { |
| 9841 |
const {lo, hi} = _lookup(timestamps, time); |
| 9842 |
const timestamp = timestamps[lo] >= time ? timestamps[lo] : timestamps[hi]; |
| 9843 |
ticks[timestamp] = true; |
| 9844 |
} |
| 9845 |
} |
| 9846 |
function setMajorTicks(scale, ticks, map, majorUnit) { |
| 9847 |
const adapter = scale._adapter; |
| 9848 |
const first = +adapter.startOf(ticks[0].value, majorUnit); |
| 9849 |
const last = ticks[ticks.length - 1].value; |
| 9850 |
let major, index; |
| 9851 |
for (major = first; major <= last; major = +adapter.add(major, 1, majorUnit)) { |
| 9852 |
index = map[major]; |
| 9853 |
if (index >= 0) { |
| 9854 |
ticks[index].major = true; |
| 9855 |
} |
| 9856 |
} |
| 9857 |
return ticks; |
| 9858 |
} |
| 9859 |
function ticksFromTimestamps(scale, values, majorUnit) { |
| 9860 |
const ticks = []; |
| 9861 |
const map = {}; |
| 9862 |
const ilen = values.length; |
| 9863 |
let i, value; |
| 9864 |
for (i = 0; i < ilen; ++i) { |
| 9865 |
value = values[i]; |
| 9866 |
map[value] = i; |
| 9867 |
ticks.push({ |
| 9868 |
value, |
| 9869 |
major: false |
| 9870 |
}); |
| 9871 |
} |
| 9872 |
return (ilen === 0 || !majorUnit) ? ticks : setMajorTicks(scale, ticks, map, majorUnit); |
| 9873 |
} |
| 9874 |
class TimeScale extends Scale { |
| 9875 |
constructor(props) { |
| 9876 |
super(props); |
| 9877 |
this._cache = { |
| 9878 |
data: [], |
| 9879 |
labels: [], |
| 9880 |
all: [] |
| 9881 |
}; |
| 9882 |
this._unit = 'day'; |
| 9883 |
this._majorUnit = undefined; |
| 9884 |
this._offsets = {}; |
| 9885 |
this._normalized = false; |
| 9886 |
this._parseOpts = undefined; |
| 9887 |
} |
| 9888 |
init(scaleOpts, opts) { |
| 9889 |
const time = scaleOpts.time || (scaleOpts.time = {}); |
| 9890 |
const adapter = this._adapter = new adapters._date(scaleOpts.adapters.date); |
| 9891 |
mergeIf(time.displayFormats, adapter.formats()); |
| 9892 |
this._parseOpts = { |
| 9893 |
parser: time.parser, |
| 9894 |
round: time.round, |
| 9895 |
isoWeekday: time.isoWeekday |
| 9896 |
}; |
| 9897 |
super.init(scaleOpts); |
| 9898 |
this._normalized = opts.normalized; |
| 9899 |
} |
| 9900 |
parse(raw, index) { |
| 9901 |
if (raw === undefined) { |
| 9902 |
return null; |
| 9903 |
} |
| 9904 |
return parse(this, raw); |
| 9905 |
} |
| 9906 |
beforeLayout() { |
| 9907 |
super.beforeLayout(); |
| 9908 |
this._cache = { |
| 9909 |
data: [], |
| 9910 |
labels: [], |
| 9911 |
all: [] |
| 9912 |
}; |
| 9913 |
} |
| 9914 |
determineDataLimits() { |
| 9915 |
const me = this; |
| 9916 |
const options = me.options; |
| 9917 |
const adapter = me._adapter; |
| 9918 |
const unit = options.time.unit || 'day'; |
| 9919 |
let {min, max, minDefined, maxDefined} = me.getUserBounds(); |
| 9920 |
function _applyBounds(bounds) { |
| 9921 |
if (!minDefined && !isNaN(bounds.min)) { |
| 9922 |
min = Math.min(min, bounds.min); |
| 9923 |
} |
| 9924 |
if (!maxDefined && !isNaN(bounds.max)) { |
| 9925 |
max = Math.max(max, bounds.max); |
| 9926 |
} |
| 9927 |
} |
| 9928 |
if (!minDefined || !maxDefined) { |
| 9929 |
_applyBounds(me._getLabelBounds()); |
| 9930 |
if (options.bounds !== 'ticks' || options.ticks.source !== 'labels') { |
| 9931 |
_applyBounds(me.getMinMax(false)); |
| 9932 |
} |
| 9933 |
} |
| 9934 |
min = isNumberFinite(min) && !isNaN(min) ? min : +adapter.startOf(Date.now(), unit); |
| 9935 |
max = isNumberFinite(max) && !isNaN(max) ? max : +adapter.endOf(Date.now(), unit) + 1; |
| 9936 |
me.min = Math.min(min, max - 1); |
| 9937 |
me.max = Math.max(min + 1, max); |
| 9938 |
} |
| 9939 |
_getLabelBounds() { |
| 9940 |
const arr = this.getLabelTimestamps(); |
| 9941 |
let min = Number.POSITIVE_INFINITY; |
| 9942 |
let max = Number.NEGATIVE_INFINITY; |
| 9943 |
if (arr.length) { |
| 9944 |
min = arr[0]; |
| 9945 |
max = arr[arr.length - 1]; |
| 9946 |
} |
| 9947 |
return {min, max}; |
| 9948 |
} |
| 9949 |
buildTicks() { |
| 9950 |
const me = this; |
| 9951 |
const options = me.options; |
| 9952 |
const timeOpts = options.time; |
| 9953 |
const tickOpts = options.ticks; |
| 9954 |
const timestamps = tickOpts.source === 'labels' ? me.getLabelTimestamps() : me._generate(); |
| 9955 |
if (options.bounds === 'ticks' && timestamps.length) { |
| 9956 |
me.min = me._userMin || timestamps[0]; |
| 9957 |
me.max = me._userMax || timestamps[timestamps.length - 1]; |
| 9958 |
} |
| 9959 |
const min = me.min; |
| 9960 |
const max = me.max; |
| 9961 |
const ticks = _filterBetween(timestamps, min, max); |
| 9962 |
me._unit = timeOpts.unit || (tickOpts.autoSkip |
| 9963 |
? determineUnitForAutoTicks(timeOpts.minUnit, me.min, me.max, me._getLabelCapacity(min)) |
| 9964 |
: determineUnitForFormatting(me, ticks.length, timeOpts.minUnit, me.min, me.max)); |
| 9965 |
me._majorUnit = !tickOpts.major.enabled || me._unit === 'year' ? undefined |
| 9966 |
: determineMajorUnit(me._unit); |
| 9967 |
me.initOffsets(timestamps); |
| 9968 |
if (options.reverse) { |
| 9969 |
ticks.reverse(); |
| 9970 |
} |
| 9971 |
return ticksFromTimestamps(me, ticks, me._majorUnit); |
| 9972 |
} |
| 9973 |
initOffsets(timestamps) { |
| 9974 |
const me = this; |
| 9975 |
let start = 0; |
| 9976 |
let end = 0; |
| 9977 |
let first, last; |
| 9978 |
if (me.options.offset && timestamps.length) { |
| 9979 |
first = me.getDecimalForValue(timestamps[0]); |
| 9980 |
if (timestamps.length === 1) { |
| 9981 |
start = 1 - first; |
| 9982 |
} else { |
| 9983 |
start = (me.getDecimalForValue(timestamps[1]) - first) / 2; |
| 9984 |
} |
| 9985 |
last = me.getDecimalForValue(timestamps[timestamps.length - 1]); |
| 9986 |
if (timestamps.length === 1) { |
| 9987 |
end = last; |
| 9988 |
} else { |
| 9989 |
end = (last - me.getDecimalForValue(timestamps[timestamps.length - 2])) / 2; |
| 9990 |
} |
| 9991 |
} |
| 9992 |
const limit = timestamps.length < 3 ? 0.5 : 0.25; |
| 9993 |
start = _limitValue(start, 0, limit); |
| 9994 |
end = _limitValue(end, 0, limit); |
| 9995 |
me._offsets = {start, end, factor: 1 / (start + 1 + end)}; |
| 9996 |
} |
| 9997 |
_generate() { |
| 9998 |
const me = this; |
| 9999 |
const adapter = me._adapter; |
| 10000 |
const min = me.min; |
| 10001 |
const max = me.max; |
| 10002 |
const options = me.options; |
| 10003 |
const timeOpts = options.time; |
| 10004 |
const minor = timeOpts.unit || determineUnitForAutoTicks(timeOpts.minUnit, min, max, me._getLabelCapacity(min)); |
| 10005 |
const stepSize = valueOrDefault(timeOpts.stepSize, 1); |
| 10006 |
const weekday = minor === 'week' ? timeOpts.isoWeekday : false; |
| 10007 |
const hasWeekday = isNumber(weekday) || weekday === true; |
| 10008 |
const ticks = {}; |
| 10009 |
let first = min; |
| 10010 |
let time, count; |
| 10011 |
if (hasWeekday) { |
| 10012 |
first = +adapter.startOf(first, 'isoWeek', weekday); |
| 10013 |
} |
| 10014 |
first = +adapter.startOf(first, hasWeekday ? 'day' : minor); |
| 10015 |
if (adapter.diff(max, min, minor) > 100000 * stepSize) { |
| 10016 |
throw new Error(min + ' and ' + max + ' are too far apart with stepSize of ' + stepSize + ' ' + minor); |
| 10017 |
} |
| 10018 |
const timestamps = options.ticks.source === 'data' && me.getDataTimestamps(); |
| 10019 |
for (time = first, count = 0; time < max; time = +adapter.add(time, stepSize, minor), count++) { |
| 10020 |
addTick(ticks, time, timestamps); |
| 10021 |
} |
| 10022 |
if (time === max || options.bounds === 'ticks' || count === 1) { |
| 10023 |
addTick(ticks, time, timestamps); |
| 10024 |
} |
| 10025 |
return Object.keys(ticks).sort((a, b) => a - b).map(x => +x); |
| 10026 |
} |
| 10027 |
getLabelForValue(value) { |
| 10028 |
const me = this; |
| 10029 |
const adapter = me._adapter; |
| 10030 |
const timeOpts = me.options.time; |
| 10031 |
if (timeOpts.tooltipFormat) { |
| 10032 |
return adapter.format(value, timeOpts.tooltipFormat); |
| 10033 |
} |
| 10034 |
return adapter.format(value, timeOpts.displayFormats.datetime); |
| 10035 |
} |
| 10036 |
_tickFormatFunction(time, index, ticks, format) { |
| 10037 |
const me = this; |
| 10038 |
const options = me.options; |
| 10039 |
const formats = options.time.displayFormats; |
| 10040 |
const unit = me._unit; |
| 10041 |
const majorUnit = me._majorUnit; |
| 10042 |
const minorFormat = unit && formats[unit]; |
| 10043 |
const majorFormat = majorUnit && formats[majorUnit]; |
| 10044 |
const tick = ticks[index]; |
| 10045 |
const major = majorUnit && majorFormat && tick && tick.major; |
| 10046 |
const label = me._adapter.format(time, format || (major ? majorFormat : minorFormat)); |
| 10047 |
const formatter = options.ticks.callback; |
| 10048 |
return formatter ? callback(formatter, [label, index, ticks], me) : label; |
| 10049 |
} |
| 10050 |
generateTickLabels(ticks) { |
| 10051 |
let i, ilen, tick; |
| 10052 |
for (i = 0, ilen = ticks.length; i < ilen; ++i) { |
| 10053 |
tick = ticks[i]; |
| 10054 |
tick.label = this._tickFormatFunction(tick.value, i, ticks); |
| 10055 |
} |
| 10056 |
} |
| 10057 |
getDecimalForValue(value) { |
| 10058 |
const me = this; |
| 10059 |
return value === null ? NaN : (value - me.min) / (me.max - me.min); |
| 10060 |
} |
| 10061 |
getPixelForValue(value) { |
| 10062 |
const me = this; |
| 10063 |
const offsets = me._offsets; |
| 10064 |
const pos = me.getDecimalForValue(value); |
| 10065 |
return me.getPixelForDecimal((offsets.start + pos) * offsets.factor); |
| 10066 |
} |
| 10067 |
getValueForPixel(pixel) { |
| 10068 |
const me = this; |
| 10069 |
const offsets = me._offsets; |
| 10070 |
const pos = me.getDecimalForPixel(pixel) / offsets.factor - offsets.end; |
| 10071 |
return me.min + pos * (me.max - me.min); |
| 10072 |
} |
| 10073 |
_getLabelSize(label) { |
| 10074 |
const me = this; |
| 10075 |
const ticksOpts = me.options.ticks; |
| 10076 |
const tickLabelWidth = me.ctx.measureText(label).width; |
| 10077 |
const angle = toRadians(me.isHorizontal() ? ticksOpts.maxRotation : ticksOpts.minRotation); |
| 10078 |
const cosRotation = Math.cos(angle); |
| 10079 |
const sinRotation = Math.sin(angle); |
| 10080 |
const tickFontSize = me._resolveTickFontOptions(0).size; |
| 10081 |
return { |
| 10082 |
w: (tickLabelWidth * cosRotation) + (tickFontSize * sinRotation), |
| 10083 |
h: (tickLabelWidth * sinRotation) + (tickFontSize * cosRotation) |
| 10084 |
}; |
| 10085 |
} |
| 10086 |
_getLabelCapacity(exampleTime) { |
| 10087 |
const me = this; |
| 10088 |
const timeOpts = me.options.time; |
| 10089 |
const displayFormats = timeOpts.displayFormats; |
| 10090 |
const format = displayFormats[timeOpts.unit] || displayFormats.millisecond; |
| 10091 |
const exampleLabel = me._tickFormatFunction(exampleTime, 0, ticksFromTimestamps(me, [exampleTime], me._majorUnit), format); |
| 10092 |
const size = me._getLabelSize(exampleLabel); |
| 10093 |
const capacity = Math.floor(me.isHorizontal() ? me.width / size.w : me.height / size.h) - 1; |
| 10094 |
return capacity > 0 ? capacity : 1; |
| 10095 |
} |
| 10096 |
getDataTimestamps() { |
| 10097 |
const me = this; |
| 10098 |
let timestamps = me._cache.data || []; |
| 10099 |
let i, ilen; |
| 10100 |
if (timestamps.length) { |
| 10101 |
return timestamps; |
| 10102 |
} |
| 10103 |
const metas = me.getMatchingVisibleMetas(); |
| 10104 |
if (me._normalized && metas.length) { |
| 10105 |
return (me._cache.data = metas[0].controller.getAllParsedValues(me)); |
| 10106 |
} |
| 10107 |
for (i = 0, ilen = metas.length; i < ilen; ++i) { |
| 10108 |
timestamps = timestamps.concat(metas[i].controller.getAllParsedValues(me)); |
| 10109 |
} |
| 10110 |
return (me._cache.data = me.normalize(timestamps)); |
| 10111 |
} |
| 10112 |
getLabelTimestamps() { |
| 10113 |
const me = this; |
| 10114 |
const timestamps = me._cache.labels || []; |
| 10115 |
let i, ilen; |
| 10116 |
if (timestamps.length) { |
| 10117 |
return timestamps; |
| 10118 |
} |
| 10119 |
const labels = me.getLabels(); |
| 10120 |
for (i = 0, ilen = labels.length; i < ilen; ++i) { |
| 10121 |
timestamps.push(parse(me, labels[i])); |
| 10122 |
} |
| 10123 |
return (me._cache.labels = me._normalized ? timestamps : me.normalize(timestamps)); |
| 10124 |
} |
| 10125 |
normalize(values) { |
| 10126 |
return _arrayUnique(values.sort(sorter)); |
| 10127 |
} |
| 10128 |
} |
| 10129 |
TimeScale.id = 'time'; |
| 10130 |
TimeScale.defaults = { |
| 10131 |
bounds: 'data', |
| 10132 |
adapters: {}, |
| 10133 |
time: { |
| 10134 |
parser: false, |
| 10135 |
unit: false, |
| 10136 |
round: false, |
| 10137 |
isoWeekday: false, |
| 10138 |
minUnit: 'millisecond', |
| 10139 |
displayFormats: {} |
| 10140 |
}, |
| 10141 |
ticks: { |
| 10142 |
source: 'auto', |
| 10143 |
major: { |
| 10144 |
enabled: false |
| 10145 |
} |
| 10146 |
} |
| 10147 |
}; |
| 10148 |
|
| 10149 |
function interpolate(table, val, reverse) { |
| 10150 |
let prevSource, nextSource, prevTarget, nextTarget; |
| 10151 |
if (reverse) { |
| 10152 |
prevSource = Math.floor(val); |
| 10153 |
nextSource = Math.ceil(val); |
| 10154 |
prevTarget = table[prevSource]; |
| 10155 |
nextTarget = table[nextSource]; |
| 10156 |
} else { |
| 10157 |
const result = _lookup(table, val); |
| 10158 |
prevTarget = result.lo; |
| 10159 |
nextTarget = result.hi; |
| 10160 |
prevSource = table[prevTarget]; |
| 10161 |
nextSource = table[nextTarget]; |
| 10162 |
} |
| 10163 |
const span = nextSource - prevSource; |
| 10164 |
return span ? prevTarget + (nextTarget - prevTarget) * (val - prevSource) / span : prevTarget; |
| 10165 |
} |
| 10166 |
class TimeSeriesScale extends TimeScale { |
| 10167 |
constructor(props) { |
| 10168 |
super(props); |
| 10169 |
this._table = []; |
| 10170 |
this._maxIndex = undefined; |
| 10171 |
} |
| 10172 |
initOffsets() { |
| 10173 |
const me = this; |
| 10174 |
const timestamps = me._getTimestampsForTable(); |
| 10175 |
me._table = me.buildLookupTable(timestamps); |
| 10176 |
me._maxIndex = me._table.length - 1; |
| 10177 |
super.initOffsets(timestamps); |
| 10178 |
} |
| 10179 |
buildLookupTable(timestamps) { |
| 10180 |
const me = this; |
| 10181 |
const {min, max} = me; |
| 10182 |
if (!timestamps.length) { |
| 10183 |
return [ |
| 10184 |
{time: min, pos: 0}, |
| 10185 |
{time: max, pos: 1} |
| 10186 |
]; |
| 10187 |
} |
| 10188 |
const items = [min]; |
| 10189 |
let i, ilen, curr; |
| 10190 |
for (i = 0, ilen = timestamps.length; i < ilen; ++i) { |
| 10191 |
curr = timestamps[i]; |
| 10192 |
if (curr > min && curr < max) { |
| 10193 |
items.push(curr); |
| 10194 |
} |
| 10195 |
} |
| 10196 |
items.push(max); |
| 10197 |
return items; |
| 10198 |
} |
| 10199 |
_getTimestampsForTable() { |
| 10200 |
const me = this; |
| 10201 |
let timestamps = me._cache.all || []; |
| 10202 |
if (timestamps.length) { |
| 10203 |
return timestamps; |
| 10204 |
} |
| 10205 |
const data = me.getDataTimestamps(); |
| 10206 |
const label = me.getLabelTimestamps(); |
| 10207 |
if (data.length && label.length) { |
| 10208 |
timestamps = me.normalize(data.concat(label)); |
| 10209 |
} else { |
| 10210 |
timestamps = data.length ? data : label; |
| 10211 |
} |
| 10212 |
timestamps = me._cache.all = timestamps; |
| 10213 |
return timestamps; |
| 10214 |
} |
| 10215 |
getPixelForValue(value, index) { |
| 10216 |
const me = this; |
| 10217 |
const offsets = me._offsets; |
| 10218 |
const pos = me._normalized && me._maxIndex > 0 && !isNullOrUndef(index) |
| 10219 |
? index / me._maxIndex : me.getDecimalForValue(value); |
| 10220 |
return me.getPixelForDecimal((offsets.start + pos) * offsets.factor); |
| 10221 |
} |
| 10222 |
getDecimalForValue(value) { |
| 10223 |
return interpolate(this._table, value) / this._maxIndex; |
| 10224 |
} |
| 10225 |
getValueForPixel(pixel) { |
| 10226 |
const me = this; |
| 10227 |
const offsets = me._offsets; |
| 10228 |
const decimal = me.getDecimalForPixel(pixel) / offsets.factor - offsets.end; |
| 10229 |
return interpolate(me._table, decimal * this._maxIndex, true); |
| 10230 |
} |
| 10231 |
} |
| 10232 |
TimeSeriesScale.id = 'timeseries'; |
| 10233 |
TimeSeriesScale.defaults = TimeScale.defaults; |
| 10234 |
|
| 10235 |
var scales = /*#__PURE__*/Object.freeze({ |
| 10236 |
__proto__: null, |
| 10237 |
CategoryScale: CategoryScale, |
| 10238 |
LinearScale: LinearScale, |
| 10239 |
LogarithmicScale: LogarithmicScale, |
| 10240 |
RadialLinearScale: RadialLinearScale, |
| 10241 |
TimeScale: TimeScale, |
| 10242 |
TimeSeriesScale: TimeSeriesScale |
| 10243 |
}); |
| 10244 |
|
| 10245 |
const registerables = [ |
| 10246 |
controllers, |
| 10247 |
elements, |
| 10248 |
plugins, |
| 10249 |
scales, |
| 10250 |
]; |
| 10251 |
|
| 10252 |
export { Animation, Animations, ArcElement, BarController, BarElement, BasePlatform, BasicPlatform, BubbleController, CategoryScale, Chart, DatasetController, plugin_decimation as Decimation, DomPlatform, DoughnutController, Element, plugin_filler as Filler, Interaction, plugin_legend as Legend, LineController, LineElement, LinearScale, LogarithmicScale, PieController, PointElement, PolarAreaController, RadarController, RadialLinearScale, Scale, ScatterController, Ticks, TimeScale, TimeSeriesScale, plugin_title as Title, plugin_tooltip as Tooltip, adapters as _adapters, animator, controllers, elements, layouts, plugins, registerables, registry, scales }; |
| 10253 |
|
