;\n\n tooltipPosition(useFinalPosition: boolean): Point {\n const {x, y} = this.getProps(['x', 'y'], useFinalPosition);\n return {x, y} as Point;\n }\n\n hasValue() {\n return isNumber(this.x) && isNumber(this.y);\n }\n\n /**\n * Gets the current or final value of each prop. Can return extra properties (whole object).\n * @param props - properties to get\n * @param [final] - get the final value (animation target)\n */\n getProps(props: P, final?: boolean): Pick;\n getProps(props: P[], final?: boolean): Partial>;\n getProps(props: string[], final?: boolean): Partial> {\n const anims = this.$animations;\n if (!final || !anims) {\n // let's not create an object, if not needed\n return this as Record;\n }\n const ret: Record = {};\n props.forEach((prop) => {\n ret[prop] = anims[prop] && anims[prop].active() ? anims[prop]._to : this[prop as string];\n });\n return ret;\n }\n}\n","import {isNullOrUndef, valueOrDefault} from '../helpers/helpers.core.js';\nimport {_factorize} from '../helpers/helpers.math.js';\n\n\n/**\n * @typedef { import('./core.controller.js').default } Chart\n * @typedef {{value:number | string, label?:string, major?:boolean, $context?:any}} Tick\n */\n\n/**\n * Returns a subset of ticks to be plotted to avoid overlapping labels.\n * @param {import('./core.scale.js').default} scale\n * @param {Tick[]} ticks\n * @return {Tick[]}\n * @private\n */\nexport function autoSkip(scale, ticks) {\n const tickOpts = scale.options.ticks;\n const determinedMaxTicks = determineMaxTicks(scale);\n const ticksLimit = Math.min(tickOpts.maxTicksLimit || determinedMaxTicks, determinedMaxTicks);\n const majorIndices = tickOpts.major.enabled ? getMajorIndices(ticks) : [];\n const numMajorIndices = majorIndices.length;\n const first = majorIndices[0];\n const last = majorIndices[numMajorIndices - 1];\n const newTicks = [];\n\n // If there are too many major ticks to display them all\n if (numMajorIndices > ticksLimit) {\n skipMajors(ticks, newTicks, majorIndices, numMajorIndices / ticksLimit);\n return newTicks;\n }\n\n const spacing = calculateSpacing(majorIndices, ticks, ticksLimit);\n\n if (numMajorIndices > 0) {\n let i, ilen;\n const avgMajorSpacing = numMajorIndices > 1 ? Math.round((last - first) / (numMajorIndices - 1)) : null;\n skip(ticks, newTicks, spacing, isNullOrUndef(avgMajorSpacing) ? 0 : first - avgMajorSpacing, first);\n for (i = 0, ilen = numMajorIndices - 1; i < ilen; i++) {\n skip(ticks, newTicks, spacing, majorIndices[i], majorIndices[i + 1]);\n }\n skip(ticks, newTicks, spacing, last, isNullOrUndef(avgMajorSpacing) ? ticks.length : last + avgMajorSpacing);\n return newTicks;\n }\n skip(ticks, newTicks, spacing);\n return newTicks;\n}\n\nfunction determineMaxTicks(scale) {\n const offset = scale.options.offset;\n const tickLength = scale._tickSize();\n const maxScale = scale._length / tickLength + (offset ? 0 : 1);\n const maxChart = scale._maxLength / tickLength;\n return Math.floor(Math.min(maxScale, maxChart));\n}\n\n/**\n * @param {number[]} majorIndices\n * @param {Tick[]} ticks\n * @param {number} ticksLimit\n */\nfunction calculateSpacing(majorIndices, ticks, ticksLimit) {\n const evenMajorSpacing = getEvenSpacing(majorIndices);\n const spacing = ticks.length / ticksLimit;\n\n // If the major ticks are evenly spaced apart, place the minor ticks\n // so that they divide the major ticks into even chunks\n if (!evenMajorSpacing) {\n return Math.max(spacing, 1);\n }\n\n const factors = _factorize(evenMajorSpacing);\n for (let i = 0, ilen = factors.length - 1; i < ilen; i++) {\n const factor = factors[i];\n if (factor > spacing) {\n return factor;\n }\n }\n return Math.max(spacing, 1);\n}\n\n/**\n * @param {Tick[]} ticks\n */\nfunction getMajorIndices(ticks) {\n const result = [];\n let i, ilen;\n for (i = 0, ilen = ticks.length; i < ilen; i++) {\n if (ticks[i].major) {\n result.push(i);\n }\n }\n return result;\n}\n\n/**\n * @param {Tick[]} ticks\n * @param {Tick[]} newTicks\n * @param {number[]} majorIndices\n * @param {number} spacing\n */\nfunction skipMajors(ticks, newTicks, majorIndices, spacing) {\n let count = 0;\n let next = majorIndices[0];\n let i;\n\n spacing = Math.ceil(spacing);\n for (i = 0; i < ticks.length; i++) {\n if (i === next) {\n newTicks.push(ticks[i]);\n count++;\n next = majorIndices[count * spacing];\n }\n }\n}\n\n/**\n * @param {Tick[]} ticks\n * @param {Tick[]} newTicks\n * @param {number} spacing\n * @param {number} [majorStart]\n * @param {number} [majorEnd]\n */\nfunction skip(ticks, newTicks, spacing, majorStart, majorEnd) {\n const start = valueOrDefault(majorStart, 0);\n const end = Math.min(valueOrDefault(majorEnd, ticks.length), ticks.length);\n let count = 0;\n let length, i, next;\n\n spacing = Math.ceil(spacing);\n if (majorEnd) {\n length = majorEnd - majorStart;\n spacing = length / Math.floor(length / spacing);\n }\n\n next = start;\n\n while (next < 0) {\n count++;\n next = Math.round(start + count * spacing);\n }\n\n for (i = Math.max(start, 0); i < end; i++) {\n if (i === next) {\n newTicks.push(ticks[i]);\n count++;\n next = Math.round(start + count * spacing);\n }\n }\n}\n\n\n/**\n * @param {number[]} arr\n */\nfunction getEvenSpacing(arr) {\n const len = arr.length;\n let i, diff;\n\n if (len < 2) {\n return false;\n }\n\n for (diff = arr[0], i = 1; i < len; ++i) {\n if (arr[i] - arr[i - 1] !== diff) {\n return false;\n }\n }\n return diff;\n}\n","import Element from './core.element.js';\nimport {_alignPixel, _measureText, renderText, clipArea, unclipArea} from '../helpers/helpers.canvas.js';\nimport {callback as call, each, finiteOrDefault, isArray, isFinite, isNullOrUndef, isObject, valueOrDefault} from '../helpers/helpers.core.js';\nimport {toDegrees, toRadians, _int16Range, _limitValue, HALF_PI} from '../helpers/helpers.math.js';\nimport {_alignStartEnd, _toLeftRightCenter} from '../helpers/helpers.extras.js';\nimport {createContext, toFont, toPadding, _addGrace} from '../helpers/helpers.options.js';\nimport {autoSkip} from './core.scale.autoskip.js';\n\nconst reverseAlign = (align) => align === 'left' ? 'right' : align === 'right' ? 'left' : align;\nconst offsetFromEdge = (scale, edge, offset) => edge === 'top' || edge === 'left' ? scale[edge] + offset : scale[edge] - offset;\nconst getTicksLimit = (ticksLength, maxTicksLimit) => Math.min(maxTicksLimit || ticksLength, ticksLength);\n\n/**\n * @typedef { import('../types/index.js').Chart } Chart\n * @typedef {{value:number | string, label?:string, major?:boolean, $context?:any}} Tick\n */\n\n/**\n * Returns a new array containing numItems from arr\n * @param {any[]} arr\n * @param {number} numItems\n */\nfunction sample(arr, numItems) {\n const result = [];\n const increment = arr.length / numItems;\n const len = arr.length;\n let i = 0;\n\n for (; i < len; i += increment) {\n result.push(arr[Math.floor(i)]);\n }\n return result;\n}\n\n/**\n * @param {Scale} scale\n * @param {number} index\n * @param {boolean} offsetGridLines\n */\nfunction getPixelForGridLine(scale, index, offsetGridLines) {\n const length = scale.ticks.length;\n const validIndex = Math.min(index, length - 1);\n const start = scale._startPixel;\n const end = scale._endPixel;\n const epsilon = 1e-6; // 1e-6 is margin in pixels for accumulated error.\n let lineValue = scale.getPixelForTick(validIndex);\n let offset;\n\n if (offsetGridLines) {\n if (length === 1) {\n offset = Math.max(lineValue - start, end - lineValue);\n } else if (index === 0) {\n offset = (scale.getPixelForTick(1) - lineValue) / 2;\n } else {\n offset = (lineValue - scale.getPixelForTick(validIndex - 1)) / 2;\n }\n lineValue += validIndex < index ? offset : -offset;\n\n // Return undefined if the pixel is out of the range\n if (lineValue < start - epsilon || lineValue > end + epsilon) {\n return;\n }\n }\n return lineValue;\n}\n\n/**\n * @param {object} caches\n * @param {number} length\n */\nfunction garbageCollect(caches, length) {\n each(caches, (cache) => {\n const gc = cache.gc;\n const gcLen = gc.length / 2;\n let i;\n if (gcLen > length) {\n for (i = 0; i < gcLen; ++i) {\n delete cache.data[gc[i]];\n }\n gc.splice(0, gcLen);\n }\n });\n}\n\n/**\n * @param {object} options\n */\nfunction getTickMarkLength(options) {\n return options.drawTicks ? options.tickLength : 0;\n}\n\n/**\n * @param {object} options\n */\nfunction getTitleHeight(options, fallback) {\n if (!options.display) {\n return 0;\n }\n\n const font = toFont(options.font, fallback);\n const padding = toPadding(options.padding);\n const lines = isArray(options.text) ? options.text.length : 1;\n\n return (lines * font.lineHeight) + padding.height;\n}\n\nfunction createScaleContext(parent, scale) {\n return createContext(parent, {\n scale,\n type: 'scale'\n });\n}\n\nfunction createTickContext(parent, index, tick) {\n return createContext(parent, {\n tick,\n index,\n type: 'tick'\n });\n}\n\nfunction titleAlign(align, position, reverse) {\n /** @type {CanvasTextAlign} */\n let ret = _toLeftRightCenter(align);\n if ((reverse && position !== 'right') || (!reverse && position === 'right')) {\n ret = reverseAlign(ret);\n }\n return ret;\n}\n\nfunction titleArgs(scale, offset, position, align) {\n const {top, left, bottom, right, chart} = scale;\n const {chartArea, scales} = chart;\n let rotation = 0;\n let maxWidth, titleX, titleY;\n const height = bottom - top;\n const width = right - left;\n\n if (scale.isHorizontal()) {\n titleX = _alignStartEnd(align, left, right);\n\n if (isObject(position)) {\n const positionAxisID = Object.keys(position)[0];\n const value = position[positionAxisID];\n titleY = scales[positionAxisID].getPixelForValue(value) + height - offset;\n } else if (position === 'center') {\n titleY = (chartArea.bottom + chartArea.top) / 2 + height - offset;\n } else {\n titleY = offsetFromEdge(scale, position, offset);\n }\n maxWidth = right - left;\n } else {\n if (isObject(position)) {\n const positionAxisID = Object.keys(position)[0];\n const value = position[positionAxisID];\n titleX = scales[positionAxisID].getPixelForValue(value) - width + offset;\n } else if (position === 'center') {\n titleX = (chartArea.left + chartArea.right) / 2 - width + offset;\n } else {\n titleX = offsetFromEdge(scale, position, offset);\n }\n titleY = _alignStartEnd(align, bottom, top);\n rotation = position === 'left' ? -HALF_PI : HALF_PI;\n }\n return {titleX, titleY, maxWidth, rotation};\n}\n\nexport default class Scale extends Element {\n\n // eslint-disable-next-line max-statements\n constructor(cfg) {\n super();\n\n /** @type {string} */\n this.id = cfg.id;\n /** @type {string} */\n this.type = cfg.type;\n /** @type {any} */\n this.options = undefined;\n /** @type {CanvasRenderingContext2D} */\n this.ctx = cfg.ctx;\n /** @type {Chart} */\n this.chart = cfg.chart;\n\n // implements box\n /** @type {number} */\n this.top = undefined;\n /** @type {number} */\n this.bottom = undefined;\n /** @type {number} */\n this.left = undefined;\n /** @type {number} */\n this.right = undefined;\n /** @type {number} */\n this.width = undefined;\n /** @type {number} */\n this.height = undefined;\n this._margins = {\n left: 0,\n right: 0,\n top: 0,\n bottom: 0\n };\n /** @type {number} */\n this.maxWidth = undefined;\n /** @type {number} */\n this.maxHeight = undefined;\n /** @type {number} */\n this.paddingTop = undefined;\n /** @type {number} */\n this.paddingBottom = undefined;\n /** @type {number} */\n this.paddingLeft = undefined;\n /** @type {number} */\n this.paddingRight = undefined;\n\n // scale-specific properties\n /** @type {string=} */\n this.axis = undefined;\n /** @type {number=} */\n this.labelRotation = undefined;\n this.min = undefined;\n this.max = undefined;\n this._range = undefined;\n /** @type {Tick[]} */\n this.ticks = [];\n /** @type {object[]|null} */\n this._gridLineItems = null;\n /** @type {object[]|null} */\n this._labelItems = null;\n /** @type {object|null} */\n this._labelSizes = null;\n this._length = 0;\n this._maxLength = 0;\n this._longestTextCache = {};\n /** @type {number} */\n this._startPixel = undefined;\n /** @type {number} */\n this._endPixel = undefined;\n this._reversePixels = false;\n this._userMax = undefined;\n this._userMin = undefined;\n this._suggestedMax = undefined;\n this._suggestedMin = undefined;\n this._ticksLength = 0;\n this._borderValue = 0;\n this._cache = {};\n this._dataLimitsCached = false;\n this.$context = undefined;\n }\n\n /**\n\t * @param {any} options\n\t * @since 3.0\n\t */\n init(options) {\n this.options = options.setContext(this.getContext());\n\n this.axis = options.axis;\n\n // parse min/max value, so we can properly determine min/max for other scales\n this._userMin = this.parse(options.min);\n this._userMax = this.parse(options.max);\n this._suggestedMin = this.parse(options.suggestedMin);\n this._suggestedMax = this.parse(options.suggestedMax);\n }\n\n /**\n\t * Parse a supported input value to internal representation.\n\t * @param {*} raw\n\t * @param {number} [index]\n\t * @since 3.0\n\t */\n parse(raw, index) { // eslint-disable-line no-unused-vars\n return raw;\n }\n\n /**\n\t * @return {{min: number, max: number, minDefined: boolean, maxDefined: boolean}}\n\t * @protected\n\t * @since 3.0\n\t */\n getUserBounds() {\n let {_userMin, _userMax, _suggestedMin, _suggestedMax} = this;\n _userMin = finiteOrDefault(_userMin, Number.POSITIVE_INFINITY);\n _userMax = finiteOrDefault(_userMax, Number.NEGATIVE_INFINITY);\n _suggestedMin = finiteOrDefault(_suggestedMin, Number.POSITIVE_INFINITY);\n _suggestedMax = finiteOrDefault(_suggestedMax, Number.NEGATIVE_INFINITY);\n return {\n min: finiteOrDefault(_userMin, _suggestedMin),\n max: finiteOrDefault(_userMax, _suggestedMax),\n minDefined: isFinite(_userMin),\n maxDefined: isFinite(_userMax)\n };\n }\n\n /**\n\t * @param {boolean} canStack\n\t * @return {{min: number, max: number}}\n\t * @protected\n\t * @since 3.0\n\t */\n getMinMax(canStack) {\n // eslint-disable-next-line prefer-const\n let {min, max, minDefined, maxDefined} = this.getUserBounds();\n let range;\n\n if (minDefined && maxDefined) {\n return {min, max};\n }\n\n const metas = this.getMatchingVisibleMetas();\n for (let i = 0, ilen = metas.length; i < ilen; ++i) {\n range = metas[i].controller.getMinMax(this, canStack);\n if (!minDefined) {\n min = Math.min(min, range.min);\n }\n if (!maxDefined) {\n max = Math.max(max, range.max);\n }\n }\n\n // Make sure min <= max when only min or max is defined by user and the data is outside that range\n min = maxDefined && min > max ? max : min;\n max = minDefined && min > max ? min : max;\n\n return {\n min: finiteOrDefault(min, finiteOrDefault(max, min)),\n max: finiteOrDefault(max, finiteOrDefault(min, max))\n };\n }\n\n /**\n\t * Get the padding needed for the scale\n\t * @return {{top: number, left: number, bottom: number, right: number}} the necessary padding\n\t * @private\n\t */\n getPadding() {\n return {\n left: this.paddingLeft || 0,\n top: this.paddingTop || 0,\n right: this.paddingRight || 0,\n bottom: this.paddingBottom || 0\n };\n }\n\n /**\n\t * Returns the scale tick objects\n\t * @return {Tick[]}\n\t * @since 2.7\n\t */\n getTicks() {\n return this.ticks;\n }\n\n /**\n\t * @return {string[]}\n\t */\n getLabels() {\n const data = this.chart.data;\n return this.options.labels || (this.isHorizontal() ? data.xLabels : data.yLabels) || data.labels || [];\n }\n\n /**\n * @return {import('../types.js').LabelItem[]}\n */\n getLabelItems(chartArea = this.chart.chartArea) {\n const items = this._labelItems || (this._labelItems = this._computeLabelItems(chartArea));\n return items;\n }\n\n // When a new layout is created, reset the data limits cache\n beforeLayout() {\n this._cache = {};\n this._dataLimitsCached = false;\n }\n\n // These methods are ordered by lifecycle. Utilities then follow.\n // Any function defined here is inherited by all scale types.\n // Any function can be extended by the scale type\n\n beforeUpdate() {\n call(this.options.beforeUpdate, [this]);\n }\n\n /**\n\t * @param {number} maxWidth - the max width in pixels\n\t * @param {number} maxHeight - the max height in pixels\n\t * @param {{top: number, left: number, bottom: number, right: number}} margins - the space between the edge of the other scales and edge of the chart\n\t * This space comes from two sources:\n\t * - padding - space that's required to show the labels at the edges of the scale\n\t * - thickness of scales or legends in another orientation\n\t */\n update(maxWidth, maxHeight, margins) {\n const {beginAtZero, grace, ticks: tickOpts} = this.options;\n const sampleSize = tickOpts.sampleSize;\n\n // Update Lifecycle - Probably don't want to ever extend or overwrite this function ;)\n this.beforeUpdate();\n\n // Absorb the master measurements\n this.maxWidth = maxWidth;\n this.maxHeight = maxHeight;\n this._margins = margins = Object.assign({\n left: 0,\n right: 0,\n top: 0,\n bottom: 0\n }, margins);\n\n this.ticks = null;\n this._labelSizes = null;\n this._gridLineItems = null;\n this._labelItems = null;\n\n // Dimensions\n this.beforeSetDimensions();\n this.setDimensions();\n this.afterSetDimensions();\n\n this._maxLength = this.isHorizontal()\n ? this.width + margins.left + margins.right\n : this.height + margins.top + margins.bottom;\n\n // Data min/max\n if (!this._dataLimitsCached) {\n this.beforeDataLimits();\n this.determineDataLimits();\n this.afterDataLimits();\n this._range = _addGrace(this, grace, beginAtZero);\n this._dataLimitsCached = true;\n }\n\n this.beforeBuildTicks();\n\n this.ticks = this.buildTicks() || [];\n\n // Allow modification of ticks in callback.\n this.afterBuildTicks();\n\n // Compute tick rotation and fit using a sampled subset of labels\n // We generally don't need to compute the size of every single label for determining scale size\n const samplingEnabled = sampleSize < this.ticks.length;\n this._convertTicksToLabels(samplingEnabled ? sample(this.ticks, sampleSize) : this.ticks);\n\n // configure is called twice, once here, once from core.controller.updateLayout.\n // Here we haven't been positioned yet, but dimensions are correct.\n // Variables set in configure are needed for calculateLabelRotation, and\n // it's ok that coordinates are not correct there, only dimensions matter.\n this.configure();\n\n // Tick Rotation\n this.beforeCalculateLabelRotation();\n this.calculateLabelRotation(); // Preconditions: number of ticks and sizes of largest labels must be calculated beforehand\n this.afterCalculateLabelRotation();\n\n // Auto-skip\n if (tickOpts.display && (tickOpts.autoSkip || tickOpts.source === 'auto')) {\n this.ticks = autoSkip(this, this.ticks);\n this._labelSizes = null;\n this.afterAutoSkip();\n }\n\n if (samplingEnabled) {\n // Generate labels using all non-skipped ticks\n this._convertTicksToLabels(this.ticks);\n }\n\n this.beforeFit();\n this.fit(); // Preconditions: label rotation and label sizes must be calculated beforehand\n this.afterFit();\n\n // IMPORTANT: after this point, we consider that `this.ticks` will NEVER change!\n\n this.afterUpdate();\n }\n\n /**\n\t * @protected\n\t */\n configure() {\n let reversePixels = this.options.reverse;\n let startPixel, endPixel;\n\n if (this.isHorizontal()) {\n startPixel = this.left;\n endPixel = this.right;\n } else {\n startPixel = this.top;\n endPixel = this.bottom;\n // by default vertical scales are from bottom to top, so pixels are reversed\n reversePixels = !reversePixels;\n }\n this._startPixel = startPixel;\n this._endPixel = endPixel;\n this._reversePixels = reversePixels;\n this._length = endPixel - startPixel;\n this._alignToPixels = this.options.alignToPixels;\n }\n\n afterUpdate() {\n call(this.options.afterUpdate, [this]);\n }\n\n //\n\n beforeSetDimensions() {\n call(this.options.beforeSetDimensions, [this]);\n }\n setDimensions() {\n // Set the unconstrained dimension before label rotation\n if (this.isHorizontal()) {\n // Reset position before calculating rotation\n this.width = this.maxWidth;\n this.left = 0;\n this.right = this.width;\n } else {\n this.height = this.maxHeight;\n\n // Reset position before calculating rotation\n this.top = 0;\n this.bottom = this.height;\n }\n\n // Reset padding\n this.paddingLeft = 0;\n this.paddingTop = 0;\n this.paddingRight = 0;\n this.paddingBottom = 0;\n }\n afterSetDimensions() {\n call(this.options.afterSetDimensions, [this]);\n }\n\n _callHooks(name) {\n this.chart.notifyPlugins(name, this.getContext());\n call(this.options[name], [this]);\n }\n\n // Data limits\n beforeDataLimits() {\n this._callHooks('beforeDataLimits');\n }\n determineDataLimits() {}\n afterDataLimits() {\n this._callHooks('afterDataLimits');\n }\n\n //\n beforeBuildTicks() {\n this._callHooks('beforeBuildTicks');\n }\n /**\n\t * @return {object[]} the ticks\n\t */\n buildTicks() {\n return [];\n }\n afterBuildTicks() {\n this._callHooks('afterBuildTicks');\n }\n\n beforeTickToLabelConversion() {\n call(this.options.beforeTickToLabelConversion, [this]);\n }\n /**\n\t * Convert ticks to label strings\n\t * @param {Tick[]} ticks\n\t */\n generateTickLabels(ticks) {\n const tickOpts = this.options.ticks;\n let i, ilen, tick;\n for (i = 0, ilen = ticks.length; i < ilen; i++) {\n tick = ticks[i];\n tick.label = call(tickOpts.callback, [tick.value, i, ticks], this);\n }\n }\n afterTickToLabelConversion() {\n call(this.options.afterTickToLabelConversion, [this]);\n }\n\n //\n\n beforeCalculateLabelRotation() {\n call(this.options.beforeCalculateLabelRotation, [this]);\n }\n calculateLabelRotation() {\n const options = this.options;\n const tickOpts = options.ticks;\n const numTicks = getTicksLimit(this.ticks.length, options.ticks.maxTicksLimit);\n const minRotation = tickOpts.minRotation || 0;\n const maxRotation = tickOpts.maxRotation;\n let labelRotation = minRotation;\n let tickWidth, maxHeight, maxLabelDiagonal;\n\n if (!this._isVisible() || !tickOpts.display || minRotation >= maxRotation || numTicks <= 1 || !this.isHorizontal()) {\n this.labelRotation = minRotation;\n return;\n }\n\n const labelSizes = this._getLabelSizes();\n const maxLabelWidth = labelSizes.widest.width;\n const maxLabelHeight = labelSizes.highest.height;\n\n // Estimate the width of each grid based on the canvas width, the maximum\n // label width and the number of tick intervals\n const maxWidth = _limitValue(this.chart.width - maxLabelWidth, 0, this.maxWidth);\n tickWidth = options.offset ? this.maxWidth / numTicks : maxWidth / (numTicks - 1);\n\n // Allow 3 pixels x2 padding either side for label readability\n if (maxLabelWidth + 6 > tickWidth) {\n tickWidth = maxWidth / (numTicks - (options.offset ? 0.5 : 1));\n maxHeight = this.maxHeight - getTickMarkLength(options.grid)\n\t\t\t\t- tickOpts.padding - getTitleHeight(options.title, this.chart.options.font);\n maxLabelDiagonal = Math.sqrt(maxLabelWidth * maxLabelWidth + maxLabelHeight * maxLabelHeight);\n labelRotation = toDegrees(Math.min(\n Math.asin(_limitValue((labelSizes.highest.height + 6) / tickWidth, -1, 1)),\n Math.asin(_limitValue(maxHeight / maxLabelDiagonal, -1, 1)) - Math.asin(_limitValue(maxLabelHeight / maxLabelDiagonal, -1, 1))\n ));\n labelRotation = Math.max(minRotation, Math.min(maxRotation, labelRotation));\n }\n\n this.labelRotation = labelRotation;\n }\n afterCalculateLabelRotation() {\n call(this.options.afterCalculateLabelRotation, [this]);\n }\n afterAutoSkip() {}\n\n //\n\n beforeFit() {\n call(this.options.beforeFit, [this]);\n }\n fit() {\n // Reset\n const minSize = {\n width: 0,\n height: 0\n };\n\n const {chart, options: {ticks: tickOpts, title: titleOpts, grid: gridOpts}} = this;\n const display = this._isVisible();\n const isHorizontal = this.isHorizontal();\n\n if (display) {\n const titleHeight = getTitleHeight(titleOpts, chart.options.font);\n if (isHorizontal) {\n minSize.width = this.maxWidth;\n minSize.height = getTickMarkLength(gridOpts) + titleHeight;\n } else {\n minSize.height = this.maxHeight; // fill all the height\n minSize.width = getTickMarkLength(gridOpts) + titleHeight;\n }\n\n // Don't bother fitting the ticks if we are not showing the labels\n if (tickOpts.display && this.ticks.length) {\n const {first, last, widest, highest} = this._getLabelSizes();\n const tickPadding = tickOpts.padding * 2;\n const angleRadians = toRadians(this.labelRotation);\n const cos = Math.cos(angleRadians);\n const sin = Math.sin(angleRadians);\n\n if (isHorizontal) {\n // A horizontal axis is more constrained by the height.\n const labelHeight = tickOpts.mirror ? 0 : sin * widest.width + cos * highest.height;\n minSize.height = Math.min(this.maxHeight, minSize.height + labelHeight + tickPadding);\n } else {\n // A vertical axis is more constrained by the width. Labels are the\n // dominant factor here, so get that length first and account for padding\n const labelWidth = tickOpts.mirror ? 0 : cos * widest.width + sin * highest.height;\n\n minSize.width = Math.min(this.maxWidth, minSize.width + labelWidth + tickPadding);\n }\n this._calculatePadding(first, last, sin, cos);\n }\n }\n\n this._handleMargins();\n\n if (isHorizontal) {\n this.width = this._length = chart.width - this._margins.left - this._margins.right;\n this.height = minSize.height;\n } else {\n this.width = minSize.width;\n this.height = this._length = chart.height - this._margins.top - this._margins.bottom;\n }\n }\n\n _calculatePadding(first, last, sin, cos) {\n const {ticks: {align, padding}, position} = this.options;\n const isRotated = this.labelRotation !== 0;\n const labelsBelowTicks = position !== 'top' && this.axis === 'x';\n\n if (this.isHorizontal()) {\n const offsetLeft = this.getPixelForTick(0) - this.left;\n const offsetRight = this.right - this.getPixelForTick(this.ticks.length - 1);\n let paddingLeft = 0;\n let paddingRight = 0;\n\n // Ensure that our ticks are always inside the canvas. When rotated, ticks are right aligned\n // which means that the right padding is dominated by the font height\n if (isRotated) {\n if (labelsBelowTicks) {\n paddingLeft = cos * first.width;\n paddingRight = sin * last.height;\n } else {\n paddingLeft = sin * first.height;\n paddingRight = cos * last.width;\n }\n } else if (align === 'start') {\n paddingRight = last.width;\n } else if (align === 'end') {\n paddingLeft = first.width;\n } else if (align !== 'inner') {\n paddingLeft = first.width / 2;\n paddingRight = last.width / 2;\n }\n\n // Adjust padding taking into account changes in offsets\n this.paddingLeft = Math.max((paddingLeft - offsetLeft + padding) * this.width / (this.width - offsetLeft), 0);\n this.paddingRight = Math.max((paddingRight - offsetRight + padding) * this.width / (this.width - offsetRight), 0);\n } else {\n let paddingTop = last.height / 2;\n let paddingBottom = first.height / 2;\n\n if (align === 'start') {\n paddingTop = 0;\n paddingBottom = first.height;\n } else if (align === 'end') {\n paddingTop = last.height;\n paddingBottom = 0;\n }\n\n this.paddingTop = paddingTop + padding;\n this.paddingBottom = paddingBottom + padding;\n }\n }\n\n /**\n\t * Handle margins and padding interactions\n\t * @private\n\t */\n _handleMargins() {\n if (this._margins) {\n this._margins.left = Math.max(this.paddingLeft, this._margins.left);\n this._margins.top = Math.max(this.paddingTop, this._margins.top);\n this._margins.right = Math.max(this.paddingRight, this._margins.right);\n this._margins.bottom = Math.max(this.paddingBottom, this._margins.bottom);\n }\n }\n\n afterFit() {\n call(this.options.afterFit, [this]);\n }\n\n // Shared Methods\n /**\n\t * @return {boolean}\n\t */\n isHorizontal() {\n const {axis, position} = this.options;\n return position === 'top' || position === 'bottom' || axis === 'x';\n }\n /**\n\t * @return {boolean}\n\t */\n isFullSize() {\n return this.options.fullSize;\n }\n\n /**\n\t * @param {Tick[]} ticks\n\t * @private\n\t */\n _convertTicksToLabels(ticks) {\n this.beforeTickToLabelConversion();\n\n this.generateTickLabels(ticks);\n\n // Ticks should be skipped when callback returns null or undef, so lets remove those.\n let i, ilen;\n for (i = 0, ilen = ticks.length; i < ilen; i++) {\n if (isNullOrUndef(ticks[i].label)) {\n ticks.splice(i, 1);\n ilen--;\n i--;\n }\n }\n\n this.afterTickToLabelConversion();\n }\n\n /**\n\t * @return {{ first: object, last: object, widest: object, highest: object, widths: Array, heights: array }}\n\t * @private\n\t */\n _getLabelSizes() {\n let labelSizes = this._labelSizes;\n\n if (!labelSizes) {\n const sampleSize = this.options.ticks.sampleSize;\n let ticks = this.ticks;\n if (sampleSize < ticks.length) {\n ticks = sample(ticks, sampleSize);\n }\n\n this._labelSizes = labelSizes = this._computeLabelSizes(ticks, ticks.length, this.options.ticks.maxTicksLimit);\n }\n\n return labelSizes;\n }\n\n /**\n\t * Returns {width, height, offset} objects for the first, last, widest, highest tick\n\t * labels where offset indicates the anchor point offset from the top in pixels.\n\t * @return {{ first: object, last: object, widest: object, highest: object, widths: Array, heights: array }}\n\t * @private\n\t */\n _computeLabelSizes(ticks, length, maxTicksLimit) {\n const {ctx, _longestTextCache: caches} = this;\n const widths = [];\n const heights = [];\n const increment = Math.floor(length / getTicksLimit(length, maxTicksLimit));\n let widestLabelSize = 0;\n let highestLabelSize = 0;\n let i, j, jlen, label, tickFont, fontString, cache, lineHeight, width, height, nestedLabel;\n\n for (i = 0; i < length; i += increment) {\n label = ticks[i].label;\n tickFont = this._resolveTickFontOptions(i);\n ctx.font = fontString = tickFont.string;\n cache = caches[fontString] = caches[fontString] || {data: {}, gc: []};\n lineHeight = tickFont.lineHeight;\n width = height = 0;\n // Undefined labels and arrays should not be measured\n if (!isNullOrUndef(label) && !isArray(label)) {\n width = _measureText(ctx, cache.data, cache.gc, width, label);\n height = lineHeight;\n } else if (isArray(label)) {\n // if it is an array let's measure each element\n for (j = 0, jlen = label.length; j < jlen; ++j) {\n nestedLabel = /** @type {string} */ (label[j]);\n // Undefined labels and arrays should not be measured\n if (!isNullOrUndef(nestedLabel) && !isArray(nestedLabel)) {\n width = _measureText(ctx, cache.data, cache.gc, width, nestedLabel);\n height += lineHeight;\n }\n }\n }\n widths.push(width);\n heights.push(height);\n widestLabelSize = Math.max(width, widestLabelSize);\n highestLabelSize = Math.max(height, highestLabelSize);\n }\n garbageCollect(caches, length);\n\n const widest = widths.indexOf(widestLabelSize);\n const highest = heights.indexOf(highestLabelSize);\n\n const valueAt = (idx) => ({width: widths[idx] || 0, height: heights[idx] || 0});\n\n return {\n first: valueAt(0),\n last: valueAt(length - 1),\n widest: valueAt(widest),\n highest: valueAt(highest),\n widths,\n heights,\n };\n }\n\n /**\n\t * Used to get the label to display in the tooltip for the given value\n\t * @param {*} value\n\t * @return {string}\n\t */\n getLabelForValue(value) {\n return value;\n }\n\n /**\n\t * Returns the location of the given data point. Value can either be an index or a numerical value\n\t * The coordinate (0, 0) is at the upper-left corner of the canvas\n\t * @param {*} value\n\t * @param {number} [index]\n\t * @return {number}\n\t */\n getPixelForValue(value, index) { // eslint-disable-line no-unused-vars\n return NaN;\n }\n\n /**\n\t * Used to get the data value from a given pixel. This is the inverse of getPixelForValue\n\t * The coordinate (0, 0) is at the upper-left corner of the canvas\n\t * @param {number} pixel\n\t * @return {*}\n\t */\n getValueForPixel(pixel) {} // eslint-disable-line no-unused-vars\n\n /**\n\t * Returns the location of the tick at the given index\n\t * The coordinate (0, 0) is at the upper-left corner of the canvas\n\t * @param {number} index\n\t * @return {number}\n\t */\n getPixelForTick(index) {\n const ticks = this.ticks;\n if (index < 0 || index > ticks.length - 1) {\n return null;\n }\n return this.getPixelForValue(ticks[index].value);\n }\n\n /**\n\t * Utility for getting the pixel location of a percentage of scale\n\t * The coordinate (0, 0) is at the upper-left corner of the canvas\n\t * @param {number} decimal\n\t * @return {number}\n\t */\n getPixelForDecimal(decimal) {\n if (this._reversePixels) {\n decimal = 1 - decimal;\n }\n\n const pixel = this._startPixel + decimal * this._length;\n return _int16Range(this._alignToPixels ? _alignPixel(this.chart, pixel, 0) : pixel);\n }\n\n /**\n\t * @param {number} pixel\n\t * @return {number}\n\t */\n getDecimalForPixel(pixel) {\n const decimal = (pixel - this._startPixel) / this._length;\n return this._reversePixels ? 1 - decimal : decimal;\n }\n\n /**\n\t * Returns the pixel for the minimum chart value\n\t * The coordinate (0, 0) is at the upper-left corner of the canvas\n\t * @return {number}\n\t */\n getBasePixel() {\n return this.getPixelForValue(this.getBaseValue());\n }\n\n /**\n\t * @return {number}\n\t */\n getBaseValue() {\n const {min, max} = this;\n\n return min < 0 && max < 0 ? max :\n min > 0 && max > 0 ? min :\n 0;\n }\n\n /**\n\t * @protected\n\t */\n getContext(index) {\n const ticks = this.ticks || [];\n\n if (index >= 0 && index < ticks.length) {\n const tick = ticks[index];\n return tick.$context ||\n\t\t\t\t(tick.$context = createTickContext(this.getContext(), index, tick));\n }\n return this.$context ||\n\t\t\t(this.$context = createScaleContext(this.chart.getContext(), this));\n }\n\n /**\n\t * @return {number}\n\t * @private\n\t */\n _tickSize() {\n const optionTicks = this.options.ticks;\n\n // Calculate space needed by label in axis direction.\n const rot = toRadians(this.labelRotation);\n const cos = Math.abs(Math.cos(rot));\n const sin = Math.abs(Math.sin(rot));\n\n const labelSizes = this._getLabelSizes();\n const padding = optionTicks.autoSkipPadding || 0;\n const w = labelSizes ? labelSizes.widest.width + padding : 0;\n const h = labelSizes ? labelSizes.highest.height + padding : 0;\n\n // Calculate space needed for 1 tick in axis direction.\n return this.isHorizontal()\n ? h * cos > w * sin ? w / cos : h / sin\n : h * sin < w * cos ? h / cos : w / sin;\n }\n\n /**\n\t * @return {boolean}\n\t * @private\n\t */\n _isVisible() {\n const display = this.options.display;\n\n if (display !== 'auto') {\n return !!display;\n }\n\n return this.getMatchingVisibleMetas().length > 0;\n }\n\n /**\n\t * @private\n\t */\n _computeGridLineItems(chartArea) {\n const axis = this.axis;\n const chart = this.chart;\n const options = this.options;\n const {grid, position, border} = options;\n const offset = grid.offset;\n const isHorizontal = this.isHorizontal();\n const ticks = this.ticks;\n const ticksLength = ticks.length + (offset ? 1 : 0);\n const tl = getTickMarkLength(grid);\n const items = [];\n\n const borderOpts = border.setContext(this.getContext());\n const axisWidth = borderOpts.display ? borderOpts.width : 0;\n const axisHalfWidth = axisWidth / 2;\n const alignBorderValue = function(pixel) {\n return _alignPixel(chart, pixel, axisWidth);\n };\n let borderValue, i, lineValue, alignedLineValue;\n let tx1, ty1, tx2, ty2, x1, y1, x2, y2;\n\n if (position === 'top') {\n borderValue = alignBorderValue(this.bottom);\n ty1 = this.bottom - tl;\n ty2 = borderValue - axisHalfWidth;\n y1 = alignBorderValue(chartArea.top) + axisHalfWidth;\n y2 = chartArea.bottom;\n } else if (position === 'bottom') {\n borderValue = alignBorderValue(this.top);\n y1 = chartArea.top;\n y2 = alignBorderValue(chartArea.bottom) - axisHalfWidth;\n ty1 = borderValue + axisHalfWidth;\n ty2 = this.top + tl;\n } else if (position === 'left') {\n borderValue = alignBorderValue(this.right);\n tx1 = this.right - tl;\n tx2 = borderValue - axisHalfWidth;\n x1 = alignBorderValue(chartArea.left) + axisHalfWidth;\n x2 = chartArea.right;\n } else if (position === 'right') {\n borderValue = alignBorderValue(this.left);\n x1 = chartArea.left;\n x2 = alignBorderValue(chartArea.right) - axisHalfWidth;\n tx1 = borderValue + axisHalfWidth;\n tx2 = this.left + tl;\n } else if (axis === 'x') {\n if (position === 'center') {\n borderValue = alignBorderValue((chartArea.top + chartArea.bottom) / 2 + 0.5);\n } else if (isObject(position)) {\n const positionAxisID = Object.keys(position)[0];\n const value = position[positionAxisID];\n borderValue = alignBorderValue(this.chart.scales[positionAxisID].getPixelForValue(value));\n }\n\n y1 = chartArea.top;\n y2 = chartArea.bottom;\n ty1 = borderValue + axisHalfWidth;\n ty2 = ty1 + tl;\n } else if (axis === 'y') {\n if (position === 'center') {\n borderValue = alignBorderValue((chartArea.left + chartArea.right) / 2);\n } else if (isObject(position)) {\n const positionAxisID = Object.keys(position)[0];\n const value = position[positionAxisID];\n borderValue = alignBorderValue(this.chart.scales[positionAxisID].getPixelForValue(value));\n }\n\n tx1 = borderValue - axisHalfWidth;\n tx2 = tx1 - tl;\n x1 = chartArea.left;\n x2 = chartArea.right;\n }\n\n const limit = valueOrDefault(options.ticks.maxTicksLimit, ticksLength);\n const step = Math.max(1, Math.ceil(ticksLength / limit));\n for (i = 0; i < ticksLength; i += step) {\n const context = this.getContext(i);\n const optsAtIndex = grid.setContext(context);\n const optsAtIndexBorder = border.setContext(context);\n\n const lineWidth = optsAtIndex.lineWidth;\n const lineColor = optsAtIndex.color;\n const borderDash = optsAtIndexBorder.dash || [];\n const borderDashOffset = optsAtIndexBorder.dashOffset;\n\n const tickWidth = optsAtIndex.tickWidth;\n const tickColor = optsAtIndex.tickColor;\n const tickBorderDash = optsAtIndex.tickBorderDash || [];\n const tickBorderDashOffset = optsAtIndex.tickBorderDashOffset;\n\n lineValue = getPixelForGridLine(this, i, offset);\n\n // Skip if the pixel is out of the range\n if (lineValue === undefined) {\n continue;\n }\n\n alignedLineValue = _alignPixel(chart, lineValue, lineWidth);\n\n if (isHorizontal) {\n tx1 = tx2 = x1 = x2 = alignedLineValue;\n } else {\n ty1 = ty2 = y1 = y2 = alignedLineValue;\n }\n\n items.push({\n tx1,\n ty1,\n tx2,\n ty2,\n x1,\n y1,\n x2,\n y2,\n width: lineWidth,\n color: lineColor,\n borderDash,\n borderDashOffset,\n tickWidth,\n tickColor,\n tickBorderDash,\n tickBorderDashOffset,\n });\n }\n\n this._ticksLength = ticksLength;\n this._borderValue = borderValue;\n\n return items;\n }\n\n /**\n\t * @private\n\t */\n _computeLabelItems(chartArea) {\n const axis = this.axis;\n const options = this.options;\n const {position, ticks: optionTicks} = options;\n const isHorizontal = this.isHorizontal();\n const ticks = this.ticks;\n const {align, crossAlign, padding, mirror} = optionTicks;\n const tl = getTickMarkLength(options.grid);\n const tickAndPadding = tl + padding;\n const hTickAndPadding = mirror ? -padding : tickAndPadding;\n const rotation = -toRadians(this.labelRotation);\n const items = [];\n let i, ilen, tick, label, x, y, textAlign, pixel, font, lineHeight, lineCount, textOffset;\n let textBaseline = 'middle';\n\n if (position === 'top') {\n y = this.bottom - hTickAndPadding;\n textAlign = this._getXAxisLabelAlignment();\n } else if (position === 'bottom') {\n y = this.top + hTickAndPadding;\n textAlign = this._getXAxisLabelAlignment();\n } else if (position === 'left') {\n const ret = this._getYAxisLabelAlignment(tl);\n textAlign = ret.textAlign;\n x = ret.x;\n } else if (position === 'right') {\n const ret = this._getYAxisLabelAlignment(tl);\n textAlign = ret.textAlign;\n x = ret.x;\n } else if (axis === 'x') {\n if (position === 'center') {\n y = ((chartArea.top + chartArea.bottom) / 2) + tickAndPadding;\n } else if (isObject(position)) {\n const positionAxisID = Object.keys(position)[0];\n const value = position[positionAxisID];\n y = this.chart.scales[positionAxisID].getPixelForValue(value) + tickAndPadding;\n }\n textAlign = this._getXAxisLabelAlignment();\n } else if (axis === 'y') {\n if (position === 'center') {\n x = ((chartArea.left + chartArea.right) / 2) - tickAndPadding;\n } else if (isObject(position)) {\n const positionAxisID = Object.keys(position)[0];\n const value = position[positionAxisID];\n x = this.chart.scales[positionAxisID].getPixelForValue(value);\n }\n textAlign = this._getYAxisLabelAlignment(tl).textAlign;\n }\n\n if (axis === 'y') {\n if (align === 'start') {\n textBaseline = 'top';\n } else if (align === 'end') {\n textBaseline = 'bottom';\n }\n }\n\n const labelSizes = this._getLabelSizes();\n for (i = 0, ilen = ticks.length; i < ilen; ++i) {\n tick = ticks[i];\n label = tick.label;\n\n const optsAtIndex = optionTicks.setContext(this.getContext(i));\n pixel = this.getPixelForTick(i) + optionTicks.labelOffset;\n font = this._resolveTickFontOptions(i);\n lineHeight = font.lineHeight;\n lineCount = isArray(label) ? label.length : 1;\n const halfCount = lineCount / 2;\n const color = optsAtIndex.color;\n const strokeColor = optsAtIndex.textStrokeColor;\n const strokeWidth = optsAtIndex.textStrokeWidth;\n let tickTextAlign = textAlign;\n\n if (isHorizontal) {\n x = pixel;\n\n if (textAlign === 'inner') {\n if (i === ilen - 1) {\n tickTextAlign = !this.options.reverse ? 'right' : 'left';\n } else if (i === 0) {\n tickTextAlign = !this.options.reverse ? 'left' : 'right';\n } else {\n tickTextAlign = 'center';\n }\n }\n\n if (position === 'top') {\n if (crossAlign === 'near' || rotation !== 0) {\n textOffset = -lineCount * lineHeight + lineHeight / 2;\n } else if (crossAlign === 'center') {\n textOffset = -labelSizes.highest.height / 2 - halfCount * lineHeight + lineHeight;\n } else {\n textOffset = -labelSizes.highest.height + lineHeight / 2;\n }\n } else {\n // eslint-disable-next-line no-lonely-if\n if (crossAlign === 'near' || rotation !== 0) {\n textOffset = lineHeight / 2;\n } else if (crossAlign === 'center') {\n textOffset = labelSizes.highest.height / 2 - halfCount * lineHeight;\n } else {\n textOffset = labelSizes.highest.height - lineCount * lineHeight;\n }\n }\n if (mirror) {\n textOffset *= -1;\n }\n if (rotation !== 0 && !optsAtIndex.showLabelBackdrop) {\n x += (lineHeight / 2) * Math.sin(rotation);\n }\n } else {\n y = pixel;\n textOffset = (1 - lineCount) * lineHeight / 2;\n }\n\n let backdrop;\n\n if (optsAtIndex.showLabelBackdrop) {\n const labelPadding = toPadding(optsAtIndex.backdropPadding);\n const height = labelSizes.heights[i];\n const width = labelSizes.widths[i];\n\n let top = textOffset - labelPadding.top;\n let left = 0 - labelPadding.left;\n\n switch (textBaseline) {\n case 'middle':\n top -= height / 2;\n break;\n case 'bottom':\n top -= height;\n break;\n default:\n break;\n }\n\n switch (textAlign) {\n case 'center':\n left -= width / 2;\n break;\n case 'right':\n left -= width;\n break;\n case 'inner':\n if (i === ilen - 1) {\n left -= width;\n } else if (i > 0) {\n left -= width / 2;\n }\n break;\n default:\n break;\n }\n\n backdrop = {\n left,\n top,\n width: width + labelPadding.width,\n height: height + labelPadding.height,\n\n color: optsAtIndex.backdropColor,\n };\n }\n\n items.push({\n label,\n font,\n textOffset,\n options: {\n rotation,\n color,\n strokeColor,\n strokeWidth,\n textAlign: tickTextAlign,\n textBaseline,\n translation: [x, y],\n backdrop,\n }\n });\n }\n\n return items;\n }\n\n _getXAxisLabelAlignment() {\n const {position, ticks} = this.options;\n const rotation = -toRadians(this.labelRotation);\n\n if (rotation) {\n return position === 'top' ? 'left' : 'right';\n }\n\n let align = 'center';\n\n if (ticks.align === 'start') {\n align = 'left';\n } else if (ticks.align === 'end') {\n align = 'right';\n } else if (ticks.align === 'inner') {\n align = 'inner';\n }\n\n return align;\n }\n\n _getYAxisLabelAlignment(tl) {\n const {position, ticks: {crossAlign, mirror, padding}} = this.options;\n const labelSizes = this._getLabelSizes();\n const tickAndPadding = tl + padding;\n const widest = labelSizes.widest.width;\n\n let textAlign;\n let x;\n\n if (position === 'left') {\n if (mirror) {\n x = this.right + padding;\n\n if (crossAlign === 'near') {\n textAlign = 'left';\n } else if (crossAlign === 'center') {\n textAlign = 'center';\n x += (widest / 2);\n } else {\n textAlign = 'right';\n x += widest;\n }\n } else {\n x = this.right - tickAndPadding;\n\n if (crossAlign === 'near') {\n textAlign = 'right';\n } else if (crossAlign === 'center') {\n textAlign = 'center';\n x -= (widest / 2);\n } else {\n textAlign = 'left';\n x = this.left;\n }\n }\n } else if (position === 'right') {\n if (mirror) {\n x = this.left + padding;\n\n if (crossAlign === 'near') {\n textAlign = 'right';\n } else if (crossAlign === 'center') {\n textAlign = 'center';\n x -= (widest / 2);\n } else {\n textAlign = 'left';\n x -= widest;\n }\n } else {\n x = this.left + tickAndPadding;\n\n if (crossAlign === 'near') {\n textAlign = 'left';\n } else if (crossAlign === 'center') {\n textAlign = 'center';\n x += widest / 2;\n } else {\n textAlign = 'right';\n x = this.right;\n }\n }\n } else {\n textAlign = 'right';\n }\n\n return {textAlign, x};\n }\n\n /**\n\t * @private\n\t */\n _computeLabelArea() {\n if (this.options.ticks.mirror) {\n return;\n }\n\n const chart = this.chart;\n const position = this.options.position;\n\n if (position === 'left' || position === 'right') {\n return {top: 0, left: this.left, bottom: chart.height, right: this.right};\n } if (position === 'top' || position === 'bottom') {\n return {top: this.top, left: 0, bottom: this.bottom, right: chart.width};\n }\n }\n\n /**\n * @protected\n */\n drawBackground() {\n const {ctx, options: {backgroundColor}, left, top, width, height} = this;\n if (backgroundColor) {\n ctx.save();\n ctx.fillStyle = backgroundColor;\n ctx.fillRect(left, top, width, height);\n ctx.restore();\n }\n }\n\n getLineWidthForValue(value) {\n const grid = this.options.grid;\n if (!this._isVisible() || !grid.display) {\n return 0;\n }\n const ticks = this.ticks;\n const index = ticks.findIndex(t => t.value === value);\n if (index >= 0) {\n const opts = grid.setContext(this.getContext(index));\n return opts.lineWidth;\n }\n return 0;\n }\n\n /**\n\t * @protected\n\t */\n drawGrid(chartArea) {\n const grid = this.options.grid;\n const ctx = this.ctx;\n const items = this._gridLineItems || (this._gridLineItems = this._computeGridLineItems(chartArea));\n let i, ilen;\n\n const drawLine = (p1, p2, style) => {\n if (!style.width || !style.color) {\n return;\n }\n ctx.save();\n ctx.lineWidth = style.width;\n ctx.strokeStyle = style.color;\n ctx.setLineDash(style.borderDash || []);\n ctx.lineDashOffset = style.borderDashOffset;\n\n ctx.beginPath();\n ctx.moveTo(p1.x, p1.y);\n ctx.lineTo(p2.x, p2.y);\n ctx.stroke();\n ctx.restore();\n };\n\n if (grid.display) {\n for (i = 0, ilen = items.length; i < ilen; ++i) {\n const item = items[i];\n\n if (grid.drawOnChartArea) {\n drawLine(\n {x: item.x1, y: item.y1},\n {x: item.x2, y: item.y2},\n item\n );\n }\n\n if (grid.drawTicks) {\n drawLine(\n {x: item.tx1, y: item.ty1},\n {x: item.tx2, y: item.ty2},\n {\n color: item.tickColor,\n width: item.tickWidth,\n borderDash: item.tickBorderDash,\n borderDashOffset: item.tickBorderDashOffset\n }\n );\n }\n }\n }\n }\n\n /**\n\t * @protected\n\t */\n drawBorder() {\n const {chart, ctx, options: {border, grid}} = this;\n const borderOpts = border.setContext(this.getContext());\n const axisWidth = border.display ? borderOpts.width : 0;\n if (!axisWidth) {\n return;\n }\n const lastLineWidth = grid.setContext(this.getContext(0)).lineWidth;\n const borderValue = this._borderValue;\n let x1, x2, y1, y2;\n\n if (this.isHorizontal()) {\n x1 = _alignPixel(chart, this.left, axisWidth) - axisWidth / 2;\n x2 = _alignPixel(chart, this.right, lastLineWidth) + lastLineWidth / 2;\n y1 = y2 = borderValue;\n } else {\n y1 = _alignPixel(chart, this.top, axisWidth) - axisWidth / 2;\n y2 = _alignPixel(chart, this.bottom, lastLineWidth) + lastLineWidth / 2;\n x1 = x2 = borderValue;\n }\n ctx.save();\n ctx.lineWidth = borderOpts.width;\n ctx.strokeStyle = borderOpts.color;\n\n ctx.beginPath();\n ctx.moveTo(x1, y1);\n ctx.lineTo(x2, y2);\n ctx.stroke();\n\n ctx.restore();\n }\n\n /**\n\t * @protected\n\t */\n drawLabels(chartArea) {\n const optionTicks = this.options.ticks;\n\n if (!optionTicks.display) {\n return;\n }\n\n const ctx = this.ctx;\n\n const area = this._computeLabelArea();\n if (area) {\n clipArea(ctx, area);\n }\n\n const items = this.getLabelItems(chartArea);\n for (const item of items) {\n const renderTextOptions = item.options;\n const tickFont = item.font;\n const label = item.label;\n const y = item.textOffset;\n renderText(ctx, label, 0, y, tickFont, renderTextOptions);\n }\n\n if (area) {\n unclipArea(ctx);\n }\n }\n\n /**\n\t * @protected\n\t */\n drawTitle() {\n const {ctx, options: {position, title, reverse}} = this;\n\n if (!title.display) {\n return;\n }\n\n const font = toFont(title.font);\n const padding = toPadding(title.padding);\n const align = title.align;\n let offset = font.lineHeight / 2;\n\n if (position === 'bottom' || position === 'center' || isObject(position)) {\n offset += padding.bottom;\n if (isArray(title.text)) {\n offset += font.lineHeight * (title.text.length - 1);\n }\n } else {\n offset += padding.top;\n }\n\n const {titleX, titleY, maxWidth, rotation} = titleArgs(this, offset, position, align);\n\n renderText(ctx, title.text, 0, 0, font, {\n color: title.color,\n maxWidth,\n rotation,\n textAlign: titleAlign(align, position, reverse),\n textBaseline: 'middle',\n translation: [titleX, titleY],\n });\n }\n\n draw(chartArea) {\n if (!this._isVisible()) {\n return;\n }\n\n this.drawBackground();\n this.drawGrid(chartArea);\n this.drawBorder();\n this.drawTitle();\n this.drawLabels(chartArea);\n }\n\n /**\n\t * @return {object[]}\n\t * @private\n\t */\n _layers() {\n const opts = this.options;\n const tz = opts.ticks && opts.ticks.z || 0;\n const gz = valueOrDefault(opts.grid && opts.grid.z, -1);\n const bz = valueOrDefault(opts.border && opts.border.z, 0);\n\n if (!this._isVisible() || this.draw !== Scale.prototype.draw) {\n // backward compatibility: draw has been overridden by custom scale\n return [{\n z: tz,\n draw: (chartArea) => {\n this.draw(chartArea);\n }\n }];\n }\n\n return [{\n z: gz,\n draw: (chartArea) => {\n this.drawBackground();\n this.drawGrid(chartArea);\n this.drawTitle();\n }\n }, {\n z: bz,\n draw: () => {\n this.drawBorder();\n }\n }, {\n z: tz,\n draw: (chartArea) => {\n this.drawLabels(chartArea);\n }\n }];\n }\n\n /**\n\t * Returns visible dataset metas that are attached to this scale\n\t * @param {string} [type] - if specified, also filter by dataset type\n\t * @return {object[]}\n\t */\n getMatchingVisibleMetas(type) {\n const metas = this.chart.getSortedVisibleDatasetMetas();\n const axisID = this.axis + 'AxisID';\n const result = [];\n let i, ilen;\n\n for (i = 0, ilen = metas.length; i < ilen; ++i) {\n const meta = metas[i];\n if (meta[axisID] === this.id && (!type || meta.type === type)) {\n result.push(meta);\n }\n }\n return result;\n }\n\n /**\n\t * @param {number} index\n\t * @return {object}\n\t * @protected\n \t */\n _resolveTickFontOptions(index) {\n const opts = this.options.ticks.setContext(this.getContext(index));\n return toFont(opts.font);\n }\n\n /**\n * @protected\n */\n _maxDigits() {\n const fontSize = this._resolveTickFontOptions(0).lineHeight;\n return (this.isHorizontal() ? this.width : this.height) / fontSize;\n }\n}\n","import {merge} from '../helpers/index.js';\nimport defaults, {overrides} from './core.defaults.js';\n\n/**\n * @typedef {{id: string, defaults: any, overrides?: any, defaultRoutes: any}} IChartComponent\n */\n\nexport default class TypedRegistry {\n constructor(type, scope, override) {\n this.type = type;\n this.scope = scope;\n this.override = override;\n this.items = Object.create(null);\n }\n\n isForType(type) {\n return Object.prototype.isPrototypeOf.call(this.type.prototype, type.prototype);\n }\n\n /**\n\t * @param {IChartComponent} item\n\t * @returns {string} The scope where items defaults were registered to.\n\t */\n register(item) {\n const proto = Object.getPrototypeOf(item);\n let parentScope;\n\n if (isIChartComponent(proto)) {\n // Make sure the parent is registered and note the scope where its defaults are.\n parentScope = this.register(proto);\n }\n\n const items = this.items;\n const id = item.id;\n const scope = this.scope + '.' + id;\n\n if (!id) {\n throw new Error('class does not have id: ' + item);\n }\n\n if (id in items) {\n // already registered\n return scope;\n }\n\n items[id] = item;\n registerDefaults(item, scope, parentScope);\n if (this.override) {\n defaults.override(item.id, item.overrides);\n }\n\n return scope;\n }\n\n /**\n\t * @param {string} id\n\t * @returns {object?}\n\t */\n get(id) {\n return this.items[id];\n }\n\n /**\n\t * @param {IChartComponent} item\n\t */\n unregister(item) {\n const items = this.items;\n const id = item.id;\n const scope = this.scope;\n\n if (id in items) {\n delete items[id];\n }\n\n if (scope && id in defaults[scope]) {\n delete defaults[scope][id];\n if (this.override) {\n delete overrides[id];\n }\n }\n }\n}\n\nfunction registerDefaults(item, scope, parentScope) {\n // Inherit the parent's defaults and keep existing defaults\n const itemDefaults = merge(Object.create(null), [\n parentScope ? defaults.get(parentScope) : {},\n defaults.get(scope),\n item.defaults\n ]);\n\n defaults.set(scope, itemDefaults);\n\n if (item.defaultRoutes) {\n routeDefaults(scope, item.defaultRoutes);\n }\n\n if (item.descriptors) {\n defaults.describe(scope, item.descriptors);\n }\n}\n\nfunction routeDefaults(scope, routes) {\n Object.keys(routes).forEach(property => {\n const propertyParts = property.split('.');\n const sourceName = propertyParts.pop();\n const sourceScope = [scope].concat(propertyParts).join('.');\n const parts = routes[property].split('.');\n const targetName = parts.pop();\n const targetScope = parts.join('.');\n defaults.route(sourceScope, sourceName, targetScope, targetName);\n });\n}\n\nfunction isIChartComponent(proto) {\n return 'id' in proto && 'defaults' in proto;\n}\n","import DatasetController from './core.datasetController.js';\nimport Element from './core.element.js';\nimport Scale from './core.scale.js';\nimport TypedRegistry from './core.typedRegistry.js';\nimport {each, callback as call, _capitalize} from '../helpers/helpers.core.js';\n\n/**\n * Please use the module's default export which provides a singleton instance\n * Note: class is exported for typedoc\n */\nexport class Registry {\n constructor() {\n this.controllers = new TypedRegistry(DatasetController, 'datasets', true);\n this.elements = new TypedRegistry(Element, 'elements');\n this.plugins = new TypedRegistry(Object, 'plugins');\n this.scales = new TypedRegistry(Scale, 'scales');\n // Order is important, Scale has Element in prototype chain,\n // so Scales must be before Elements. Plugins are a fallback, so not listed here.\n this._typedRegistries = [this.controllers, this.scales, this.elements];\n }\n\n /**\n\t * @param {...any} args\n\t */\n add(...args) {\n this._each('register', args);\n }\n\n remove(...args) {\n this._each('unregister', args);\n }\n\n /**\n\t * @param {...typeof DatasetController} args\n\t */\n addControllers(...args) {\n this._each('register', args, this.controllers);\n }\n\n /**\n\t * @param {...typeof Element} args\n\t */\n addElements(...args) {\n this._each('register', args, this.elements);\n }\n\n /**\n\t * @param {...any} args\n\t */\n addPlugins(...args) {\n this._each('register', args, this.plugins);\n }\n\n /**\n\t * @param {...typeof Scale} args\n\t */\n addScales(...args) {\n this._each('register', args, this.scales);\n }\n\n /**\n\t * @param {string} id\n\t * @returns {typeof DatasetController}\n\t */\n getController(id) {\n return this._get(id, this.controllers, 'controller');\n }\n\n /**\n\t * @param {string} id\n\t * @returns {typeof Element}\n\t */\n getElement(id) {\n return this._get(id, this.elements, 'element');\n }\n\n /**\n\t * @param {string} id\n\t * @returns {object}\n\t */\n getPlugin(id) {\n return this._get(id, this.plugins, 'plugin');\n }\n\n /**\n\t * @param {string} id\n\t * @returns {typeof Scale}\n\t */\n getScale(id) {\n return this._get(id, this.scales, 'scale');\n }\n\n /**\n\t * @param {...typeof DatasetController} args\n\t */\n removeControllers(...args) {\n this._each('unregister', args, this.controllers);\n }\n\n /**\n\t * @param {...typeof Element} args\n\t */\n removeElements(...args) {\n this._each('unregister', args, this.elements);\n }\n\n /**\n\t * @param {...any} args\n\t */\n removePlugins(...args) {\n this._each('unregister', args, this.plugins);\n }\n\n /**\n\t * @param {...typeof Scale} args\n\t */\n removeScales(...args) {\n this._each('unregister', args, this.scales);\n }\n\n /**\n\t * @private\n\t */\n _each(method, args, typedRegistry) {\n [...args].forEach(arg => {\n const reg = typedRegistry || this._getRegistryForType(arg);\n if (typedRegistry || reg.isForType(arg) || (reg === this.plugins && arg.id)) {\n this._exec(method, reg, arg);\n } else {\n // Handle loopable args\n // Use case:\n // import * as plugins from './plugins.js';\n // Chart.register(plugins);\n each(arg, item => {\n // If there are mixed types in the loopable, make sure those are\n // registered in correct registry\n // Use case: (treemap exporting controller, elements etc)\n // import * as treemap from 'chartjs-chart-treemap.js';\n // Chart.register(treemap);\n\n const itemReg = typedRegistry || this._getRegistryForType(item);\n this._exec(method, itemReg, item);\n });\n }\n });\n }\n\n /**\n\t * @private\n\t */\n _exec(method, registry, component) {\n const camelMethod = _capitalize(method);\n call(component['before' + camelMethod], [], component); // beforeRegister / beforeUnregister\n registry[method](component);\n call(component['after' + camelMethod], [], component); // afterRegister / afterUnregister\n }\n\n /**\n\t * @private\n\t */\n _getRegistryForType(type) {\n for (let i = 0; i < this._typedRegistries.length; i++) {\n const reg = this._typedRegistries[i];\n if (reg.isForType(type)) {\n return reg;\n }\n }\n // plugins is the fallback registry\n return this.plugins;\n }\n\n /**\n\t * @private\n\t */\n _get(id, typedRegistry, type) {\n const item = typedRegistry.get(id);\n if (item === undefined) {\n throw new Error('\"' + id + '\" is not a registered ' + type + '.');\n }\n return item;\n }\n\n}\n\n// singleton instance\nexport default /* #__PURE__ */ new Registry();\n","import registry from './core.registry.js';\nimport {callback as callCallback, isNullOrUndef, valueOrDefault} from '../helpers/helpers.core.js';\n\n/**\n * @typedef { import('./core.controller.js').default } Chart\n * @typedef { import('../types/index.js').ChartEvent } ChartEvent\n * @typedef { import('../plugins/plugin.tooltip.js').default } Tooltip\n */\n\n/**\n * @callback filterCallback\n * @param {{plugin: object, options: object}} value\n * @param {number} [index]\n * @param {array} [array]\n * @param {object} [thisArg]\n * @return {boolean}\n */\n\n\nexport default class PluginService {\n constructor() {\n this._init = [];\n }\n\n /**\n\t * Calls enabled plugins for `chart` on the specified hook and with the given args.\n\t * This method immediately returns as soon as a plugin explicitly returns false. The\n\t * returned value can be used, for instance, to interrupt the current action.\n\t * @param {Chart} chart - The chart instance for which plugins should be called.\n\t * @param {string} hook - The name of the plugin method to call (e.g. 'beforeUpdate').\n\t * @param {object} [args] - Extra arguments to apply to the hook call.\n * @param {filterCallback} [filter] - Filtering function for limiting which plugins are notified\n\t * @returns {boolean} false if any of the plugins return false, else returns true.\n\t */\n notify(chart, hook, args, filter) {\n if (hook === 'beforeInit') {\n this._init = this._createDescriptors(chart, true);\n this._notify(this._init, chart, 'install');\n }\n\n const descriptors = filter ? this._descriptors(chart).filter(filter) : this._descriptors(chart);\n const result = this._notify(descriptors, chart, hook, args);\n\n if (hook === 'afterDestroy') {\n this._notify(descriptors, chart, 'stop');\n this._notify(this._init, chart, 'uninstall');\n }\n return result;\n }\n\n /**\n\t * @private\n\t */\n _notify(descriptors, chart, hook, args) {\n args = args || {};\n for (const descriptor of descriptors) {\n const plugin = descriptor.plugin;\n const method = plugin[hook];\n const params = [chart, args, descriptor.options];\n if (callCallback(method, params, plugin) === false && args.cancelable) {\n return false;\n }\n }\n\n return true;\n }\n\n invalidate() {\n // When plugins are registered, there is the possibility of a double\n // invalidate situation. In this case, we only want to invalidate once.\n // If we invalidate multiple times, the `_oldCache` is lost and all of the\n // plugins are restarted without being correctly stopped.\n // See https://github.com/chartjs/Chart.js/issues/8147\n if (!isNullOrUndef(this._cache)) {\n this._oldCache = this._cache;\n this._cache = undefined;\n }\n }\n\n /**\n\t * @param {Chart} chart\n\t * @private\n\t */\n _descriptors(chart) {\n if (this._cache) {\n return this._cache;\n }\n\n const descriptors = this._cache = this._createDescriptors(chart);\n\n this._notifyStateChanges(chart);\n\n return descriptors;\n }\n\n _createDescriptors(chart, all) {\n const config = chart && chart.config;\n const options = valueOrDefault(config.options && config.options.plugins, {});\n const plugins = allPlugins(config);\n // options === false => all plugins are disabled\n return options === false && !all ? [] : createDescriptors(chart, plugins, options, all);\n }\n\n /**\n\t * @param {Chart} chart\n\t * @private\n\t */\n _notifyStateChanges(chart) {\n const previousDescriptors = this._oldCache || [];\n const descriptors = this._cache;\n const diff = (a, b) => a.filter(x => !b.some(y => x.plugin.id === y.plugin.id));\n this._notify(diff(previousDescriptors, descriptors), chart, 'stop');\n this._notify(diff(descriptors, previousDescriptors), chart, 'start');\n }\n}\n\n/**\n * @param {import('./core.config.js').default} config\n */\nfunction allPlugins(config) {\n const localIds = {};\n const plugins = [];\n const keys = Object.keys(registry.plugins.items);\n for (let i = 0; i < keys.length; i++) {\n plugins.push(registry.getPlugin(keys[i]));\n }\n\n const local = config.plugins || [];\n for (let i = 0; i < local.length; i++) {\n const plugin = local[i];\n\n if (plugins.indexOf(plugin) === -1) {\n plugins.push(plugin);\n localIds[plugin.id] = true;\n }\n }\n\n return {plugins, localIds};\n}\n\nfunction getOpts(options, all) {\n if (!all && options === false) {\n return null;\n }\n if (options === true) {\n return {};\n }\n return options;\n}\n\nfunction createDescriptors(chart, {plugins, localIds}, options, all) {\n const result = [];\n const context = chart.getContext();\n\n for (const plugin of plugins) {\n const id = plugin.id;\n const opts = getOpts(options[id], all);\n if (opts === null) {\n continue;\n }\n result.push({\n plugin,\n options: pluginOpts(chart.config, {plugin, local: localIds[id]}, opts, context)\n });\n }\n\n return result;\n}\n\nfunction pluginOpts(config, {plugin, local}, opts, context) {\n const keys = config.pluginScopeKeys(plugin);\n const scopes = config.getOptionScopes(opts, keys);\n if (local && plugin.defaults) {\n // make sure plugin defaults are in scopes for local (not registered) plugins\n scopes.push(plugin.defaults);\n }\n return config.createResolver(scopes, context, [''], {\n // These are just defaults that plugins can override\n scriptable: false,\n indexable: false,\n allKeys: true\n });\n}\n","import defaults, {overrides, descriptors} from './core.defaults.js';\nimport {mergeIf, resolveObjectKey, isArray, isFunction, valueOrDefault, isObject} from '../helpers/helpers.core.js';\nimport {_attachContext, _createResolver, _descriptors} from '../helpers/helpers.config.js';\n\nexport function getIndexAxis(type, options) {\n const datasetDefaults = defaults.datasets[type] || {};\n const datasetOptions = (options.datasets || {})[type] || {};\n return datasetOptions.indexAxis || options.indexAxis || datasetDefaults.indexAxis || 'x';\n}\n\nfunction getAxisFromDefaultScaleID(id, indexAxis) {\n let axis = id;\n if (id === '_index_') {\n axis = indexAxis;\n } else if (id === '_value_') {\n axis = indexAxis === 'x' ? 'y' : 'x';\n }\n return axis;\n}\n\nfunction getDefaultScaleIDFromAxis(axis, indexAxis) {\n return axis === indexAxis ? '_index_' : '_value_';\n}\n\nfunction idMatchesAxis(id) {\n if (id === 'x' || id === 'y' || id === 'r') {\n return id;\n }\n}\n\nfunction axisFromPosition(position) {\n if (position === 'top' || position === 'bottom') {\n return 'x';\n }\n if (position === 'left' || position === 'right') {\n return 'y';\n }\n}\n\nexport function determineAxis(id, ...scaleOptions) {\n if (idMatchesAxis(id)) {\n return id;\n }\n for (const opts of scaleOptions) {\n const axis = opts.axis\n || axisFromPosition(opts.position)\n || id.length > 1 && idMatchesAxis(id[0].toLowerCase());\n if (axis) {\n return axis;\n }\n }\n throw new Error(`Cannot determine type of '${id}' axis. Please provide 'axis' or 'position' option.`);\n}\n\nfunction getAxisFromDataset(id, axis, dataset) {\n if (dataset[axis + 'AxisID'] === id) {\n return {axis};\n }\n}\n\nfunction retrieveAxisFromDatasets(id, config) {\n if (config.data && config.data.datasets) {\n const boundDs = config.data.datasets.filter((d) => d.xAxisID === id || d.yAxisID === id);\n if (boundDs.length) {\n return getAxisFromDataset(id, 'x', boundDs[0]) || getAxisFromDataset(id, 'y', boundDs[0]);\n }\n }\n return {};\n}\n\nfunction mergeScaleConfig(config, options) {\n const chartDefaults = overrides[config.type] || {scales: {}};\n const configScales = options.scales || {};\n const chartIndexAxis = getIndexAxis(config.type, options);\n const scales = Object.create(null);\n\n // First figure out first scale id's per axis.\n Object.keys(configScales).forEach(id => {\n const scaleConf = configScales[id];\n if (!isObject(scaleConf)) {\n return console.error(`Invalid scale configuration for scale: ${id}`);\n }\n if (scaleConf._proxy) {\n return console.warn(`Ignoring resolver passed as options for scale: ${id}`);\n }\n const axis = determineAxis(id, scaleConf, retrieveAxisFromDatasets(id, config), defaults.scales[scaleConf.type]);\n const defaultId = getDefaultScaleIDFromAxis(axis, chartIndexAxis);\n const defaultScaleOptions = chartDefaults.scales || {};\n scales[id] = mergeIf(Object.create(null), [{axis}, scaleConf, defaultScaleOptions[axis], defaultScaleOptions[defaultId]]);\n });\n\n // Then merge dataset defaults to scale configs\n config.data.datasets.forEach(dataset => {\n const type = dataset.type || config.type;\n const indexAxis = dataset.indexAxis || getIndexAxis(type, options);\n const datasetDefaults = overrides[type] || {};\n const defaultScaleOptions = datasetDefaults.scales || {};\n Object.keys(defaultScaleOptions).forEach(defaultID => {\n const axis = getAxisFromDefaultScaleID(defaultID, indexAxis);\n const id = dataset[axis + 'AxisID'] || axis;\n scales[id] = scales[id] || Object.create(null);\n mergeIf(scales[id], [{axis}, configScales[id], defaultScaleOptions[defaultID]]);\n });\n });\n\n // apply scale defaults, if not overridden by dataset defaults\n Object.keys(scales).forEach(key => {\n const scale = scales[key];\n mergeIf(scale, [defaults.scales[scale.type], defaults.scale]);\n });\n\n return scales;\n}\n\nfunction initOptions(config) {\n const options = config.options || (config.options = {});\n\n options.plugins = valueOrDefault(options.plugins, {});\n options.scales = mergeScaleConfig(config, options);\n}\n\nfunction initData(data) {\n data = data || {};\n data.datasets = data.datasets || [];\n data.labels = data.labels || [];\n return data;\n}\n\nfunction initConfig(config) {\n config = config || {};\n config.data = initData(config.data);\n\n initOptions(config);\n\n return config;\n}\n\nconst keyCache = new Map();\nconst keysCached = new Set();\n\nfunction cachedKeys(cacheKey, generate) {\n let keys = keyCache.get(cacheKey);\n if (!keys) {\n keys = generate();\n keyCache.set(cacheKey, keys);\n keysCached.add(keys);\n }\n return keys;\n}\n\nconst addIfFound = (set, obj, key) => {\n const opts = resolveObjectKey(obj, key);\n if (opts !== undefined) {\n set.add(opts);\n }\n};\n\nexport default class Config {\n constructor(config) {\n this._config = initConfig(config);\n this._scopeCache = new Map();\n this._resolverCache = new Map();\n }\n\n get platform() {\n return this._config.platform;\n }\n\n get type() {\n return this._config.type;\n }\n\n set type(type) {\n this._config.type = type;\n }\n\n get data() {\n return this._config.data;\n }\n\n set data(data) {\n this._config.data = initData(data);\n }\n\n get options() {\n return this._config.options;\n }\n\n set options(options) {\n this._config.options = options;\n }\n\n get plugins() {\n return this._config.plugins;\n }\n\n update() {\n const config = this._config;\n this.clearCache();\n initOptions(config);\n }\n\n clearCache() {\n this._scopeCache.clear();\n this._resolverCache.clear();\n }\n\n /**\n * Returns the option scope keys for resolving dataset options.\n * These keys do not include the dataset itself, because it is not under options.\n * @param {string} datasetType\n * @return {string[][]}\n */\n datasetScopeKeys(datasetType) {\n return cachedKeys(datasetType,\n () => [[\n `datasets.${datasetType}`,\n ''\n ]]);\n }\n\n /**\n * Returns the option scope keys for resolving dataset animation options.\n * These keys do not include the dataset itself, because it is not under options.\n * @param {string} datasetType\n * @param {string} transition\n * @return {string[][]}\n */\n datasetAnimationScopeKeys(datasetType, transition) {\n return cachedKeys(`${datasetType}.transition.${transition}`,\n () => [\n [\n `datasets.${datasetType}.transitions.${transition}`,\n `transitions.${transition}`,\n ],\n // The following are used for looking up the `animations` and `animation` keys\n [\n `datasets.${datasetType}`,\n ''\n ]\n ]);\n }\n\n /**\n * Returns the options scope keys for resolving element options that belong\n * to an dataset. These keys do not include the dataset itself, because it\n * is not under options.\n * @param {string} datasetType\n * @param {string} elementType\n * @return {string[][]}\n */\n datasetElementScopeKeys(datasetType, elementType) {\n return cachedKeys(`${datasetType}-${elementType}`,\n () => [[\n `datasets.${datasetType}.elements.${elementType}`,\n `datasets.${datasetType}`,\n `elements.${elementType}`,\n ''\n ]]);\n }\n\n /**\n * Returns the options scope keys for resolving plugin options.\n * @param {{id: string, additionalOptionScopes?: string[]}} plugin\n * @return {string[][]}\n */\n pluginScopeKeys(plugin) {\n const id = plugin.id;\n const type = this.type;\n return cachedKeys(`${type}-plugin-${id}`,\n () => [[\n `plugins.${id}`,\n ...plugin.additionalOptionScopes || [],\n ]]);\n }\n\n /**\n * @private\n */\n _cachedScopes(mainScope, resetCache) {\n const _scopeCache = this._scopeCache;\n let cache = _scopeCache.get(mainScope);\n if (!cache || resetCache) {\n cache = new Map();\n _scopeCache.set(mainScope, cache);\n }\n return cache;\n }\n\n /**\n * Resolves the objects from options and defaults for option value resolution.\n * @param {object} mainScope - The main scope object for options\n * @param {string[][]} keyLists - The arrays of keys in resolution order\n * @param {boolean} [resetCache] - reset the cache for this mainScope\n */\n getOptionScopes(mainScope, keyLists, resetCache) {\n const {options, type} = this;\n const cache = this._cachedScopes(mainScope, resetCache);\n const cached = cache.get(keyLists);\n if (cached) {\n return cached;\n }\n\n const scopes = new Set();\n\n keyLists.forEach(keys => {\n if (mainScope) {\n scopes.add(mainScope);\n keys.forEach(key => addIfFound(scopes, mainScope, key));\n }\n keys.forEach(key => addIfFound(scopes, options, key));\n keys.forEach(key => addIfFound(scopes, overrides[type] || {}, key));\n keys.forEach(key => addIfFound(scopes, defaults, key));\n keys.forEach(key => addIfFound(scopes, descriptors, key));\n });\n\n const array = Array.from(scopes);\n if (array.length === 0) {\n array.push(Object.create(null));\n }\n if (keysCached.has(keyLists)) {\n cache.set(keyLists, array);\n }\n return array;\n }\n\n /**\n * Returns the option scopes for resolving chart options\n * @return {object[]}\n */\n chartOptionScopes() {\n const {options, type} = this;\n\n return [\n options,\n overrides[type] || {},\n defaults.datasets[type] || {}, // https://github.com/chartjs/Chart.js/issues/8531\n {type},\n defaults,\n descriptors\n ];\n }\n\n /**\n * @param {object[]} scopes\n * @param {string[]} names\n * @param {function|object} context\n * @param {string[]} [prefixes]\n * @return {object}\n */\n resolveNamedOptions(scopes, names, context, prefixes = ['']) {\n const result = {$shared: true};\n const {resolver, subPrefixes} = getResolver(this._resolverCache, scopes, prefixes);\n let options = resolver;\n if (needContext(resolver, names)) {\n result.$shared = false;\n context = isFunction(context) ? context() : context;\n // subResolver is passed to scriptable options. It should not resolve to hover options.\n const subResolver = this.createResolver(scopes, context, subPrefixes);\n options = _attachContext(resolver, context, subResolver);\n }\n\n for (const prop of names) {\n result[prop] = options[prop];\n }\n return result;\n }\n\n /**\n * @param {object[]} scopes\n * @param {object} [context]\n * @param {string[]} [prefixes]\n * @param {{scriptable: boolean, indexable: boolean, allKeys?: boolean}} [descriptorDefaults]\n */\n createResolver(scopes, context, prefixes = [''], descriptorDefaults) {\n const {resolver} = getResolver(this._resolverCache, scopes, prefixes);\n return isObject(context)\n ? _attachContext(resolver, context, undefined, descriptorDefaults)\n : resolver;\n }\n}\n\nfunction getResolver(resolverCache, scopes, prefixes) {\n let cache = resolverCache.get(scopes);\n if (!cache) {\n cache = new Map();\n resolverCache.set(scopes, cache);\n }\n const cacheKey = prefixes.join();\n let cached = cache.get(cacheKey);\n if (!cached) {\n const resolver = _createResolver(scopes, prefixes);\n cached = {\n resolver,\n subPrefixes: prefixes.filter(p => !p.toLowerCase().includes('hover'))\n };\n cache.set(cacheKey, cached);\n }\n return cached;\n}\n\nconst hasFunction = value => isObject(value)\n && Object.getOwnPropertyNames(value).some((key) => isFunction(value[key]));\n\nfunction needContext(proxy, names) {\n const {isScriptable, isIndexable} = _descriptors(proxy);\n\n for (const prop of names) {\n const scriptable = isScriptable(prop);\n const indexable = isIndexable(prop);\n const value = (indexable || scriptable) && proxy[prop];\n if ((scriptable && (isFunction(value) || hasFunction(value)))\n || (indexable && isArray(value))) {\n return true;\n }\n }\n return false;\n}\n","import animator from './core.animator.js';\nimport defaults, {overrides} from './core.defaults.js';\nimport Interaction from './core.interaction.js';\nimport layouts from './core.layouts.js';\nimport {_detectPlatform} from '../platform/index.js';\nimport PluginService from './core.plugins.js';\nimport registry from './core.registry.js';\nimport Config, {determineAxis, getIndexAxis} from './core.config.js';\nimport {retinaScale, _isDomSupported} from '../helpers/helpers.dom.js';\nimport {each, callback as callCallback, uid, valueOrDefault, _elementsEqual, isNullOrUndef, setsEqual, defined, isFunction, _isClickEvent} from '../helpers/helpers.core.js';\nimport {clearCanvas, clipArea, createContext, unclipArea, _isPointInArea} from '../helpers/index.js';\n// @ts-ignore\nimport {version} from '../../package.json';\nimport {debounce} from '../helpers/helpers.extras.js';\n\n/**\n * @typedef { import('../types/index.js').ChartEvent } ChartEvent\n * @typedef { import('../types/index.js').Point } Point\n */\n\nconst KNOWN_POSITIONS = ['top', 'bottom', 'left', 'right', 'chartArea'];\nfunction positionIsHorizontal(position, axis) {\n return position === 'top' || position === 'bottom' || (KNOWN_POSITIONS.indexOf(position) === -1 && axis === 'x');\n}\n\nfunction compare2Level(l1, l2) {\n return function(a, b) {\n return a[l1] === b[l1]\n ? a[l2] - b[l2]\n : a[l1] - b[l1];\n };\n}\n\nfunction onAnimationsComplete(context) {\n const chart = context.chart;\n const animationOptions = chart.options.animation;\n\n chart.notifyPlugins('afterRender');\n callCallback(animationOptions && animationOptions.onComplete, [context], chart);\n}\n\nfunction onAnimationProgress(context) {\n const chart = context.chart;\n const animationOptions = chart.options.animation;\n callCallback(animationOptions && animationOptions.onProgress, [context], chart);\n}\n\n/**\n * Chart.js can take a string id of a canvas element, a 2d context, or a canvas element itself.\n * Attempt to unwrap the item passed into the chart constructor so that it is a canvas element (if possible).\n */\nfunction getCanvas(item) {\n if (_isDomSupported() && typeof item === 'string') {\n item = document.getElementById(item);\n } else if (item && item.length) {\n // Support for array based queries (such as jQuery)\n item = item[0];\n }\n\n if (item && item.canvas) {\n // Support for any object associated to a canvas (including a context2d)\n item = item.canvas;\n }\n return item;\n}\n\nconst instances = {};\nconst getChart = (key) => {\n const canvas = getCanvas(key);\n return Object.values(instances).filter((c) => c.canvas === canvas).pop();\n};\n\nfunction moveNumericKeys(obj, start, move) {\n const keys = Object.keys(obj);\n for (const key of keys) {\n const intKey = +key;\n if (intKey >= start) {\n const value = obj[key];\n delete obj[key];\n if (move > 0 || intKey > start) {\n obj[intKey + move] = value;\n }\n }\n }\n}\n\n/**\n * @param {ChartEvent} e\n * @param {ChartEvent|null} lastEvent\n * @param {boolean} inChartArea\n * @param {boolean} isClick\n * @returns {ChartEvent|null}\n */\nfunction determineLastEvent(e, lastEvent, inChartArea, isClick) {\n if (!inChartArea || e.type === 'mouseout') {\n return null;\n }\n if (isClick) {\n return lastEvent;\n }\n return e;\n}\n\nfunction getSizeForArea(scale, chartArea, field) {\n return scale.options.clip ? scale[field] : chartArea[field];\n}\n\nfunction getDatasetArea(meta, chartArea) {\n const {xScale, yScale} = meta;\n if (xScale && yScale) {\n return {\n left: getSizeForArea(xScale, chartArea, 'left'),\n right: getSizeForArea(xScale, chartArea, 'right'),\n top: getSizeForArea(yScale, chartArea, 'top'),\n bottom: getSizeForArea(yScale, chartArea, 'bottom')\n };\n }\n return chartArea;\n}\n\nclass Chart {\n\n static defaults = defaults;\n static instances = instances;\n static overrides = overrides;\n static registry = registry;\n static version = version;\n static getChart = getChart;\n\n static register(...items) {\n registry.add(...items);\n invalidatePlugins();\n }\n\n static unregister(...items) {\n registry.remove(...items);\n invalidatePlugins();\n }\n\n // eslint-disable-next-line max-statements\n constructor(item, userConfig) {\n const config = this.config = new Config(userConfig);\n const initialCanvas = getCanvas(item);\n const existingChart = getChart(initialCanvas);\n if (existingChart) {\n throw new Error(\n 'Canvas is already in use. Chart with ID \\'' + existingChart.id + '\\'' +\n\t\t\t\t' must be destroyed before the canvas with ID \\'' + existingChart.canvas.id + '\\' can be reused.'\n );\n }\n\n const options = config.createResolver(config.chartOptionScopes(), this.getContext());\n\n this.platform = new (config.platform || _detectPlatform(initialCanvas))();\n this.platform.updateConfig(config);\n\n const context = this.platform.acquireContext(initialCanvas, options.aspectRatio);\n const canvas = context && context.canvas;\n const height = canvas && canvas.height;\n const width = canvas && canvas.width;\n\n this.id = uid();\n this.ctx = context;\n this.canvas = canvas;\n this.width = width;\n this.height = height;\n this._options = options;\n // Store the previously used aspect ratio to determine if a resize\n // is needed during updates. Do this after _options is set since\n // aspectRatio uses a getter\n this._aspectRatio = this.aspectRatio;\n this._layers = [];\n this._metasets = [];\n this._stacks = undefined;\n this.boxes = [];\n this.currentDevicePixelRatio = undefined;\n this.chartArea = undefined;\n this._active = [];\n this._lastEvent = undefined;\n this._listeners = {};\n /** @type {?{attach?: function, detach?: function, resize?: function}} */\n this._responsiveListeners = undefined;\n this._sortedMetasets = [];\n this.scales = {};\n this._plugins = new PluginService();\n this.$proxies = {};\n this._hiddenIndices = {};\n this.attached = false;\n this._animationsDisabled = undefined;\n this.$context = undefined;\n this._doResize = debounce(mode => this.update(mode), options.resizeDelay || 0);\n this._dataChanges = [];\n\n // Add the chart instance to the global namespace\n instances[this.id] = this;\n\n if (!context || !canvas) {\n // The given item is not a compatible context2d element, let's return before finalizing\n // the chart initialization but after setting basic chart / controller properties that\n // can help to figure out that the chart is not valid (e.g chart.canvas !== null);\n // https://github.com/chartjs/Chart.js/issues/2807\n console.error(\"Failed to create chart: can't acquire context from the given item\");\n return;\n }\n\n animator.listen(this, 'complete', onAnimationsComplete);\n animator.listen(this, 'progress', onAnimationProgress);\n\n this._initialize();\n if (this.attached) {\n this.update();\n }\n }\n\n get aspectRatio() {\n const {options: {aspectRatio, maintainAspectRatio}, width, height, _aspectRatio} = this;\n if (!isNullOrUndef(aspectRatio)) {\n // If aspectRatio is defined in options, use that.\n return aspectRatio;\n }\n\n if (maintainAspectRatio && _aspectRatio) {\n // If maintainAspectRatio is truthly and we had previously determined _aspectRatio, use that\n return _aspectRatio;\n }\n\n // Calculate\n return height ? width / height : null;\n }\n\n get data() {\n return this.config.data;\n }\n\n set data(data) {\n this.config.data = data;\n }\n\n get options() {\n return this._options;\n }\n\n set options(options) {\n this.config.options = options;\n }\n\n get registry() {\n return registry;\n }\n\n /**\n\t * @private\n\t */\n _initialize() {\n // Before init plugin notification\n this.notifyPlugins('beforeInit');\n\n if (this.options.responsive) {\n this.resize();\n } else {\n retinaScale(this, this.options.devicePixelRatio);\n }\n\n this.bindEvents();\n\n // After init plugin notification\n this.notifyPlugins('afterInit');\n\n return this;\n }\n\n clear() {\n clearCanvas(this.canvas, this.ctx);\n return this;\n }\n\n stop() {\n animator.stop(this);\n return this;\n }\n\n /**\n\t * Resize the chart to its container or to explicit dimensions.\n\t * @param {number} [width]\n\t * @param {number} [height]\n\t */\n resize(width, height) {\n if (!animator.running(this)) {\n this._resize(width, height);\n } else {\n this._resizeBeforeDraw = {width, height};\n }\n }\n\n _resize(width, height) {\n const options = this.options;\n const canvas = this.canvas;\n const aspectRatio = options.maintainAspectRatio && this.aspectRatio;\n const newSize = this.platform.getMaximumSize(canvas, width, height, aspectRatio);\n const newRatio = options.devicePixelRatio || this.platform.getDevicePixelRatio();\n const mode = this.width ? 'resize' : 'attach';\n\n this.width = newSize.width;\n this.height = newSize.height;\n this._aspectRatio = this.aspectRatio;\n if (!retinaScale(this, newRatio, true)) {\n return;\n }\n\n this.notifyPlugins('resize', {size: newSize});\n\n callCallback(options.onResize, [this, newSize], this);\n\n if (this.attached) {\n if (this._doResize(mode)) {\n // The resize update is delayed, only draw without updating.\n this.render();\n }\n }\n }\n\n ensureScalesHaveIDs() {\n const options = this.options;\n const scalesOptions = options.scales || {};\n\n each(scalesOptions, (axisOptions, axisID) => {\n axisOptions.id = axisID;\n });\n }\n\n /**\n\t * Builds a map of scale ID to scale object for future lookup.\n\t */\n buildOrUpdateScales() {\n const options = this.options;\n const scaleOpts = options.scales;\n const scales = this.scales;\n const updated = Object.keys(scales).reduce((obj, id) => {\n obj[id] = false;\n return obj;\n }, {});\n let items = [];\n\n if (scaleOpts) {\n items = items.concat(\n Object.keys(scaleOpts).map((id) => {\n const scaleOptions = scaleOpts[id];\n const axis = determineAxis(id, scaleOptions);\n const isRadial = axis === 'r';\n const isHorizontal = axis === 'x';\n return {\n options: scaleOptions,\n dposition: isRadial ? 'chartArea' : isHorizontal ? 'bottom' : 'left',\n dtype: isRadial ? 'radialLinear' : isHorizontal ? 'category' : 'linear'\n };\n })\n );\n }\n\n each(items, (item) => {\n const scaleOptions = item.options;\n const id = scaleOptions.id;\n const axis = determineAxis(id, scaleOptions);\n const scaleType = valueOrDefault(scaleOptions.type, item.dtype);\n\n if (scaleOptions.position === undefined || positionIsHorizontal(scaleOptions.position, axis) !== positionIsHorizontal(item.dposition)) {\n scaleOptions.position = item.dposition;\n }\n\n updated[id] = true;\n let scale = null;\n if (id in scales && scales[id].type === scaleType) {\n scale = scales[id];\n } else {\n const scaleClass = registry.getScale(scaleType);\n scale = new scaleClass({\n id,\n type: scaleType,\n ctx: this.ctx,\n chart: this\n });\n scales[scale.id] = scale;\n }\n\n scale.init(scaleOptions, options);\n });\n // clear up discarded scales\n each(updated, (hasUpdated, id) => {\n if (!hasUpdated) {\n delete scales[id];\n }\n });\n\n each(scales, (scale) => {\n layouts.configure(this, scale, scale.options);\n layouts.addBox(this, scale);\n });\n }\n\n /**\n\t * @private\n\t */\n _updateMetasets() {\n const metasets = this._metasets;\n const numData = this.data.datasets.length;\n const numMeta = metasets.length;\n\n metasets.sort((a, b) => a.index - b.index);\n if (numMeta > numData) {\n for (let i = numData; i < numMeta; ++i) {\n this._destroyDatasetMeta(i);\n }\n metasets.splice(numData, numMeta - numData);\n }\n this._sortedMetasets = metasets.slice(0).sort(compare2Level('order', 'index'));\n }\n\n /**\n\t * @private\n\t */\n _removeUnreferencedMetasets() {\n const {_metasets: metasets, data: {datasets}} = this;\n if (metasets.length > datasets.length) {\n delete this._stacks;\n }\n metasets.forEach((meta, index) => {\n if (datasets.filter(x => x === meta._dataset).length === 0) {\n this._destroyDatasetMeta(index);\n }\n });\n }\n\n buildOrUpdateControllers() {\n const newControllers = [];\n const datasets = this.data.datasets;\n let i, ilen;\n\n this._removeUnreferencedMetasets();\n\n for (i = 0, ilen = datasets.length; i < ilen; i++) {\n const dataset = datasets[i];\n let meta = this.getDatasetMeta(i);\n const type = dataset.type || this.config.type;\n\n if (meta.type && meta.type !== type) {\n this._destroyDatasetMeta(i);\n meta = this.getDatasetMeta(i);\n }\n meta.type = type;\n meta.indexAxis = dataset.indexAxis || getIndexAxis(type, this.options);\n meta.order = dataset.order || 0;\n meta.index = i;\n meta.label = '' + dataset.label;\n meta.visible = this.isDatasetVisible(i);\n\n if (meta.controller) {\n meta.controller.updateIndex(i);\n meta.controller.linkScales();\n } else {\n const ControllerClass = registry.getController(type);\n const {datasetElementType, dataElementType} = defaults.datasets[type];\n Object.assign(ControllerClass, {\n dataElementType: registry.getElement(dataElementType),\n datasetElementType: datasetElementType && registry.getElement(datasetElementType)\n });\n meta.controller = new ControllerClass(this, i);\n newControllers.push(meta.controller);\n }\n }\n\n this._updateMetasets();\n return newControllers;\n }\n\n /**\n\t * Reset the elements of all datasets\n\t * @private\n\t */\n _resetElements() {\n each(this.data.datasets, (dataset, datasetIndex) => {\n this.getDatasetMeta(datasetIndex).controller.reset();\n }, this);\n }\n\n /**\n\t* Resets the chart back to its state before the initial animation\n\t*/\n reset() {\n this._resetElements();\n this.notifyPlugins('reset');\n }\n\n update(mode) {\n const config = this.config;\n\n config.update();\n const options = this._options = config.createResolver(config.chartOptionScopes(), this.getContext());\n const animsDisabled = this._animationsDisabled = !options.animation;\n\n this._updateScales();\n this._checkEventBindings();\n this._updateHiddenIndices();\n\n // plugins options references might have change, let's invalidate the cache\n // https://github.com/chartjs/Chart.js/issues/5111#issuecomment-355934167\n this._plugins.invalidate();\n\n if (this.notifyPlugins('beforeUpdate', {mode, cancelable: true}) === false) {\n return;\n }\n\n // Make sure dataset controllers are updated and new controllers are reset\n const newControllers = this.buildOrUpdateControllers();\n\n this.notifyPlugins('beforeElementsUpdate');\n\n // Make sure all dataset controllers have correct meta data counts\n let minPadding = 0;\n for (let i = 0, ilen = this.data.datasets.length; i < ilen; i++) {\n const {controller} = this.getDatasetMeta(i);\n const reset = !animsDisabled && newControllers.indexOf(controller) === -1;\n // New controllers will be reset after the layout pass, so we only want to modify\n // elements added to new datasets\n controller.buildOrUpdateElements(reset);\n minPadding = Math.max(+controller.getMaxOverflow(), minPadding);\n }\n minPadding = this._minPadding = options.layout.autoPadding ? minPadding : 0;\n this._updateLayout(minPadding);\n\n // Only reset the controllers if we have animations\n if (!animsDisabled) {\n // Can only reset the new controllers after the scales have been updated\n // Reset is done to get the starting point for the initial animation\n each(newControllers, (controller) => {\n controller.reset();\n });\n }\n\n this._updateDatasets(mode);\n\n // Do this before render so that any plugins that need final scale updates can use it\n this.notifyPlugins('afterUpdate', {mode});\n\n this._layers.sort(compare2Level('z', '_idx'));\n\n // Replay last event from before update, or set hover styles on active elements\n const {_active, _lastEvent} = this;\n if (_lastEvent) {\n this._eventHandler(_lastEvent, true);\n } else if (_active.length) {\n this._updateHoverStyles(_active, _active, true);\n }\n\n this.render();\n }\n\n /**\n * @private\n */\n _updateScales() {\n each(this.scales, (scale) => {\n layouts.removeBox(this, scale);\n });\n\n this.ensureScalesHaveIDs();\n this.buildOrUpdateScales();\n }\n\n /**\n * @private\n */\n _checkEventBindings() {\n const options = this.options;\n const existingEvents = new Set(Object.keys(this._listeners));\n const newEvents = new Set(options.events);\n\n if (!setsEqual(existingEvents, newEvents) || !!this._responsiveListeners !== options.responsive) {\n // The configured events have changed. Rebind.\n this.unbindEvents();\n this.bindEvents();\n }\n }\n\n /**\n * @private\n */\n _updateHiddenIndices() {\n const {_hiddenIndices} = this;\n const changes = this._getUniformDataChanges() || [];\n for (const {method, start, count} of changes) {\n const move = method === '_removeElements' ? -count : count;\n moveNumericKeys(_hiddenIndices, start, move);\n }\n }\n\n /**\n * @private\n */\n _getUniformDataChanges() {\n const _dataChanges = this._dataChanges;\n if (!_dataChanges || !_dataChanges.length) {\n return;\n }\n\n this._dataChanges = [];\n const datasetCount = this.data.datasets.length;\n const makeSet = (idx) => new Set(\n _dataChanges\n .filter(c => c[0] === idx)\n .map((c, i) => i + ',' + c.splice(1).join(','))\n );\n\n const changeSet = makeSet(0);\n for (let i = 1; i < datasetCount; i++) {\n if (!setsEqual(changeSet, makeSet(i))) {\n return;\n }\n }\n return Array.from(changeSet)\n .map(c => c.split(','))\n .map(a => ({method: a[1], start: +a[2], count: +a[3]}));\n }\n\n /**\n\t * Updates the chart layout unless a plugin returns `false` to the `beforeLayout`\n\t * hook, in which case, plugins will not be called on `afterLayout`.\n\t * @private\n\t */\n _updateLayout(minPadding) {\n if (this.notifyPlugins('beforeLayout', {cancelable: true}) === false) {\n return;\n }\n\n layouts.update(this, this.width, this.height, minPadding);\n\n const area = this.chartArea;\n const noArea = area.width <= 0 || area.height <= 0;\n\n this._layers = [];\n each(this.boxes, (box) => {\n if (noArea && box.position === 'chartArea') {\n // Skip drawing and configuring chartArea boxes when chartArea is zero or negative\n return;\n }\n\n // configure is called twice, once in core.scale.update and once here.\n // Here the boxes are fully updated and at their final positions.\n if (box.configure) {\n box.configure();\n }\n this._layers.push(...box._layers());\n }, this);\n\n this._layers.forEach((item, index) => {\n item._idx = index;\n });\n\n this.notifyPlugins('afterLayout');\n }\n\n /**\n\t * Updates all datasets unless a plugin returns `false` to the `beforeDatasetsUpdate`\n\t * hook, in which case, plugins will not be called on `afterDatasetsUpdate`.\n\t * @private\n\t */\n _updateDatasets(mode) {\n if (this.notifyPlugins('beforeDatasetsUpdate', {mode, cancelable: true}) === false) {\n return;\n }\n\n for (let i = 0, ilen = this.data.datasets.length; i < ilen; ++i) {\n this.getDatasetMeta(i).controller.configure();\n }\n\n for (let i = 0, ilen = this.data.datasets.length; i < ilen; ++i) {\n this._updateDataset(i, isFunction(mode) ? mode({datasetIndex: i}) : mode);\n }\n\n this.notifyPlugins('afterDatasetsUpdate', {mode});\n }\n\n /**\n\t * Updates dataset at index unless a plugin returns `false` to the `beforeDatasetUpdate`\n\t * hook, in which case, plugins will not be called on `afterDatasetUpdate`.\n\t * @private\n\t */\n _updateDataset(index, mode) {\n const meta = this.getDatasetMeta(index);\n const args = {meta, index, mode, cancelable: true};\n\n if (this.notifyPlugins('beforeDatasetUpdate', args) === false) {\n return;\n }\n\n meta.controller._update(mode);\n\n args.cancelable = false;\n this.notifyPlugins('afterDatasetUpdate', args);\n }\n\n render() {\n if (this.notifyPlugins('beforeRender', {cancelable: true}) === false) {\n return;\n }\n\n if (animator.has(this)) {\n if (this.attached && !animator.running(this)) {\n animator.start(this);\n }\n } else {\n this.draw();\n onAnimationsComplete({chart: this});\n }\n }\n\n draw() {\n let i;\n if (this._resizeBeforeDraw) {\n const {width, height} = this._resizeBeforeDraw;\n this._resize(width, height);\n this._resizeBeforeDraw = null;\n }\n this.clear();\n\n if (this.width <= 0 || this.height <= 0) {\n return;\n }\n\n if (this.notifyPlugins('beforeDraw', {cancelable: true}) === false) {\n return;\n }\n\n // Because of plugin hooks (before/afterDatasetsDraw), datasets can't\n // currently be part of layers. Instead, we draw\n // layers <= 0 before(default, backward compat), and the rest after\n const layers = this._layers;\n for (i = 0; i < layers.length && layers[i].z <= 0; ++i) {\n layers[i].draw(this.chartArea);\n }\n\n this._drawDatasets();\n\n // Rest of layers\n for (; i < layers.length; ++i) {\n layers[i].draw(this.chartArea);\n }\n\n this.notifyPlugins('afterDraw');\n }\n\n /**\n\t * @private\n\t */\n _getSortedDatasetMetas(filterVisible) {\n const metasets = this._sortedMetasets;\n const result = [];\n let i, ilen;\n\n for (i = 0, ilen = metasets.length; i < ilen; ++i) {\n const meta = metasets[i];\n if (!filterVisible || meta.visible) {\n result.push(meta);\n }\n }\n\n return result;\n }\n\n /**\n\t * Gets the visible dataset metas in drawing order\n\t * @return {object[]}\n\t */\n getSortedVisibleDatasetMetas() {\n return this._getSortedDatasetMetas(true);\n }\n\n /**\n\t * Draws all datasets unless a plugin returns `false` to the `beforeDatasetsDraw`\n\t * hook, in which case, plugins will not be called on `afterDatasetsDraw`.\n\t * @private\n\t */\n _drawDatasets() {\n if (this.notifyPlugins('beforeDatasetsDraw', {cancelable: true}) === false) {\n return;\n }\n\n const metasets = this.getSortedVisibleDatasetMetas();\n for (let i = metasets.length - 1; i >= 0; --i) {\n this._drawDataset(metasets[i]);\n }\n\n this.notifyPlugins('afterDatasetsDraw');\n }\n\n /**\n\t * Draws dataset at index unless a plugin returns `false` to the `beforeDatasetDraw`\n\t * hook, in which case, plugins will not be called on `afterDatasetDraw`.\n\t * @private\n\t */\n _drawDataset(meta) {\n const ctx = this.ctx;\n const clip = meta._clip;\n const useClip = !clip.disabled;\n const area = getDatasetArea(meta, this.chartArea);\n const args = {\n meta,\n index: meta.index,\n cancelable: true\n };\n\n if (this.notifyPlugins('beforeDatasetDraw', args) === false) {\n return;\n }\n\n if (useClip) {\n clipArea(ctx, {\n left: clip.left === false ? 0 : area.left - clip.left,\n right: clip.right === false ? this.width : area.right + clip.right,\n top: clip.top === false ? 0 : area.top - clip.top,\n bottom: clip.bottom === false ? this.height : area.bottom + clip.bottom\n });\n }\n\n meta.controller.draw();\n\n if (useClip) {\n unclipArea(ctx);\n }\n\n args.cancelable = false;\n this.notifyPlugins('afterDatasetDraw', args);\n }\n\n /**\n * Checks whether the given point is in the chart area.\n * @param {Point} point - in relative coordinates (see, e.g., getRelativePosition)\n * @returns {boolean}\n */\n isPointInArea(point) {\n return _isPointInArea(point, this.chartArea, this._minPadding);\n }\n\n getElementsAtEventForMode(e, mode, options, useFinalPosition) {\n const method = Interaction.modes[mode];\n if (typeof method === 'function') {\n return method(this, e, options, useFinalPosition);\n }\n\n return [];\n }\n\n getDatasetMeta(datasetIndex) {\n const dataset = this.data.datasets[datasetIndex];\n const metasets = this._metasets;\n let meta = metasets.filter(x => x && x._dataset === dataset).pop();\n\n if (!meta) {\n meta = {\n type: null,\n data: [],\n dataset: null,\n controller: null,\n hidden: null,\t\t\t// See isDatasetVisible() comment\n xAxisID: null,\n yAxisID: null,\n order: dataset && dataset.order || 0,\n index: datasetIndex,\n _dataset: dataset,\n _parsed: [],\n _sorted: false\n };\n metasets.push(meta);\n }\n\n return meta;\n }\n\n getContext() {\n return this.$context || (this.$context = createContext(null, {chart: this, type: 'chart'}));\n }\n\n getVisibleDatasetCount() {\n return this.getSortedVisibleDatasetMetas().length;\n }\n\n isDatasetVisible(datasetIndex) {\n const dataset = this.data.datasets[datasetIndex];\n if (!dataset) {\n return false;\n }\n\n const meta = this.getDatasetMeta(datasetIndex);\n\n // meta.hidden is a per chart dataset hidden flag override with 3 states: if true or false,\n // the dataset.hidden value is ignored, else if null, the dataset hidden state is returned.\n return typeof meta.hidden === 'boolean' ? !meta.hidden : !dataset.hidden;\n }\n\n setDatasetVisibility(datasetIndex, visible) {\n const meta = this.getDatasetMeta(datasetIndex);\n meta.hidden = !visible;\n }\n\n toggleDataVisibility(index) {\n this._hiddenIndices[index] = !this._hiddenIndices[index];\n }\n\n getDataVisibility(index) {\n return !this._hiddenIndices[index];\n }\n\n /**\n\t * @private\n\t */\n _updateVisibility(datasetIndex, dataIndex, visible) {\n const mode = visible ? 'show' : 'hide';\n const meta = this.getDatasetMeta(datasetIndex);\n const anims = meta.controller._resolveAnimations(undefined, mode);\n\n if (defined(dataIndex)) {\n meta.data[dataIndex].hidden = !visible;\n this.update();\n } else {\n this.setDatasetVisibility(datasetIndex, visible);\n // Animate visible state, so hide animation can be seen. This could be handled better if update / updateDataset returned a Promise.\n anims.update(meta, {visible});\n this.update((ctx) => ctx.datasetIndex === datasetIndex ? mode : undefined);\n }\n }\n\n hide(datasetIndex, dataIndex) {\n this._updateVisibility(datasetIndex, dataIndex, false);\n }\n\n show(datasetIndex, dataIndex) {\n this._updateVisibility(datasetIndex, dataIndex, true);\n }\n\n /**\n\t * @private\n\t */\n _destroyDatasetMeta(datasetIndex) {\n const meta = this._metasets[datasetIndex];\n if (meta && meta.controller) {\n meta.controller._destroy();\n }\n delete this._metasets[datasetIndex];\n }\n\n _stop() {\n let i, ilen;\n this.stop();\n animator.remove(this);\n\n for (i = 0, ilen = this.data.datasets.length; i < ilen; ++i) {\n this._destroyDatasetMeta(i);\n }\n }\n\n destroy() {\n this.notifyPlugins('beforeDestroy');\n const {canvas, ctx} = this;\n\n this._stop();\n this.config.clearCache();\n\n if (canvas) {\n this.unbindEvents();\n clearCanvas(canvas, ctx);\n this.platform.releaseContext(ctx);\n this.canvas = null;\n this.ctx = null;\n }\n\n delete instances[this.id];\n\n this.notifyPlugins('afterDestroy');\n }\n\n toBase64Image(...args) {\n return this.canvas.toDataURL(...args);\n }\n\n /**\n\t * @private\n\t */\n bindEvents() {\n this.bindUserEvents();\n if (this.options.responsive) {\n this.bindResponsiveEvents();\n } else {\n this.attached = true;\n }\n }\n\n /**\n * @private\n */\n bindUserEvents() {\n const listeners = this._listeners;\n const platform = this.platform;\n\n const _add = (type, listener) => {\n platform.addEventListener(this, type, listener);\n listeners[type] = listener;\n };\n\n const listener = (e, x, y) => {\n e.offsetX = x;\n e.offsetY = y;\n this._eventHandler(e);\n };\n\n each(this.options.events, (type) => _add(type, listener));\n }\n\n /**\n * @private\n */\n bindResponsiveEvents() {\n if (!this._responsiveListeners) {\n this._responsiveListeners = {};\n }\n const listeners = this._responsiveListeners;\n const platform = this.platform;\n\n const _add = (type, listener) => {\n platform.addEventListener(this, type, listener);\n listeners[type] = listener;\n };\n const _remove = (type, listener) => {\n if (listeners[type]) {\n platform.removeEventListener(this, type, listener);\n delete listeners[type];\n }\n };\n\n const listener = (width, height) => {\n if (this.canvas) {\n this.resize(width, height);\n }\n };\n\n let detached; // eslint-disable-line prefer-const\n const attached = () => {\n _remove('attach', attached);\n\n this.attached = true;\n this.resize();\n\n _add('resize', listener);\n _add('detach', detached);\n };\n\n detached = () => {\n this.attached = false;\n\n _remove('resize', listener);\n\n // Stop animating and remove metasets, so when re-attached, the animations start from beginning.\n this._stop();\n this._resize(0, 0);\n\n _add('attach', attached);\n };\n\n if (platform.isAttached(this.canvas)) {\n attached();\n } else {\n detached();\n }\n }\n\n /**\n\t * @private\n\t */\n unbindEvents() {\n each(this._listeners, (listener, type) => {\n this.platform.removeEventListener(this, type, listener);\n });\n this._listeners = {};\n\n each(this._responsiveListeners, (listener, type) => {\n this.platform.removeEventListener(this, type, listener);\n });\n this._responsiveListeners = undefined;\n }\n\n updateHoverStyle(items, mode, enabled) {\n const prefix = enabled ? 'set' : 'remove';\n let meta, item, i, ilen;\n\n if (mode === 'dataset') {\n meta = this.getDatasetMeta(items[0].datasetIndex);\n meta.controller['_' + prefix + 'DatasetHoverStyle']();\n }\n\n for (i = 0, ilen = items.length; i < ilen; ++i) {\n item = items[i];\n const controller = item && this.getDatasetMeta(item.datasetIndex).controller;\n if (controller) {\n controller[prefix + 'HoverStyle'](item.element, item.datasetIndex, item.index);\n }\n }\n }\n\n /**\n\t * Get active (hovered) elements\n\t * @returns array\n\t */\n getActiveElements() {\n return this._active || [];\n }\n\n /**\n\t * Set active (hovered) elements\n\t * @param {array} activeElements New active data points\n\t */\n setActiveElements(activeElements) {\n const lastActive = this._active || [];\n const active = activeElements.map(({datasetIndex, index}) => {\n const meta = this.getDatasetMeta(datasetIndex);\n if (!meta) {\n throw new Error('No dataset found at index ' + datasetIndex);\n }\n\n return {\n datasetIndex,\n element: meta.data[index],\n index,\n };\n });\n const changed = !_elementsEqual(active, lastActive);\n\n if (changed) {\n this._active = active;\n // Make sure we don't use the previous mouse event to override the active elements in update.\n this._lastEvent = null;\n this._updateHoverStyles(active, lastActive);\n }\n }\n\n /**\n\t * Calls enabled plugins on the specified hook and with the given args.\n\t * This method immediately returns as soon as a plugin explicitly returns false. The\n\t * returned value can be used, for instance, to interrupt the current action.\n\t * @param {string} hook - The name of the plugin method to call (e.g. 'beforeUpdate').\n\t * @param {Object} [args] - Extra arguments to apply to the hook call.\n * @param {import('./core.plugins.js').filterCallback} [filter] - Filtering function for limiting which plugins are notified\n\t * @returns {boolean} false if any of the plugins return false, else returns true.\n\t */\n notifyPlugins(hook, args, filter) {\n return this._plugins.notify(this, hook, args, filter);\n }\n\n /**\n * Check if a plugin with the specific ID is registered and enabled\n * @param {string} pluginId - The ID of the plugin of which to check if it is enabled\n * @returns {boolean}\n */\n isPluginEnabled(pluginId) {\n return this._plugins._cache.filter(p => p.plugin.id === pluginId).length === 1;\n }\n\n /**\n\t * @private\n\t */\n _updateHoverStyles(active, lastActive, replay) {\n const hoverOptions = this.options.hover;\n const diff = (a, b) => a.filter(x => !b.some(y => x.datasetIndex === y.datasetIndex && x.index === y.index));\n const deactivated = diff(lastActive, active);\n const activated = replay ? active : diff(active, lastActive);\n\n if (deactivated.length) {\n this.updateHoverStyle(deactivated, hoverOptions.mode, false);\n }\n\n if (activated.length && hoverOptions.mode) {\n this.updateHoverStyle(activated, hoverOptions.mode, true);\n }\n }\n\n /**\n\t * @private\n\t */\n _eventHandler(e, replay) {\n const args = {\n event: e,\n replay,\n cancelable: true,\n inChartArea: this.isPointInArea(e)\n };\n const eventFilter = (plugin) => (plugin.options.events || this.options.events).includes(e.native.type);\n\n if (this.notifyPlugins('beforeEvent', args, eventFilter) === false) {\n return;\n }\n\n const changed = this._handleEvent(e, replay, args.inChartArea);\n\n args.cancelable = false;\n this.notifyPlugins('afterEvent', args, eventFilter);\n\n if (changed || args.changed) {\n this.render();\n }\n\n return this;\n }\n\n /**\n\t * Handle an event\n\t * @param {ChartEvent} e the event to handle\n\t * @param {boolean} [replay] - true if the event was replayed by `update`\n * @param {boolean} [inChartArea] - true if the event is inside chartArea\n\t * @return {boolean} true if the chart needs to re-render\n\t * @private\n\t */\n _handleEvent(e, replay, inChartArea) {\n const {_active: lastActive = [], options} = this;\n\n // If the event is replayed from `update`, we should evaluate with the final positions.\n //\n // The `replay`:\n // It's the last event (excluding click) that has occurred before `update`.\n // So mouse has not moved. It's also over the chart, because there is a `replay`.\n //\n // The why:\n // If animations are active, the elements haven't moved yet compared to state before update.\n // But if they will, we are activating the elements that would be active, if this check\n // was done after the animations have completed. => \"final positions\".\n // If there is no animations, the \"final\" and \"current\" positions are equal.\n // This is done so we do not have to evaluate the active elements each animation frame\n // - it would be expensive.\n const useFinalPosition = replay;\n const active = this._getActiveElements(e, lastActive, inChartArea, useFinalPosition);\n const isClick = _isClickEvent(e);\n const lastEvent = determineLastEvent(e, this._lastEvent, inChartArea, isClick);\n\n if (inChartArea) {\n // Set _lastEvent to null while we are processing the event handlers.\n // This prevents recursion if the handler calls chart.update()\n this._lastEvent = null;\n\n // Invoke onHover hook\n callCallback(options.onHover, [e, active, this], this);\n\n if (isClick) {\n callCallback(options.onClick, [e, active, this], this);\n }\n }\n\n const changed = !_elementsEqual(active, lastActive);\n if (changed || replay) {\n this._active = active;\n this._updateHoverStyles(active, lastActive, replay);\n }\n\n this._lastEvent = lastEvent;\n\n return changed;\n }\n\n /**\n * @param {ChartEvent} e - The event\n * @param {import('../types/index.js').ActiveElement[]} lastActive - Previously active elements\n * @param {boolean} inChartArea - Is the envent inside chartArea\n * @param {boolean} useFinalPosition - Should the evaluation be done with current or final (after animation) element positions\n * @returns {import('../types/index.js').ActiveElement[]} - The active elements\n * @pravate\n */\n _getActiveElements(e, lastActive, inChartArea, useFinalPosition) {\n if (e.type === 'mouseout') {\n return [];\n }\n\n if (!inChartArea) {\n // Let user control the active elements outside chartArea. Eg. using Legend.\n return lastActive;\n }\n\n const hoverOptions = this.options.hover;\n return this.getElementsAtEventForMode(e, hoverOptions.mode, hoverOptions, useFinalPosition);\n }\n}\n\n// @ts-ignore\nfunction invalidatePlugins() {\n return each(Chart.instances, (chart) => chart._plugins.invalidate());\n}\n\nexport default Chart;\n","import {_isDomSupported} from '../helpers/index.js';\nimport BasePlatform from './platform.base.js';\nimport BasicPlatform from './platform.basic.js';\nimport DomPlatform from './platform.dom.js';\n\nexport function _detectPlatform(canvas) {\n if (!_isDomSupported() || (typeof OffscreenCanvas !== 'undefined' && canvas instanceof OffscreenCanvas)) {\n return BasicPlatform;\n }\n return DomPlatform;\n}\n\nexport {BasePlatform, BasicPlatform, DomPlatform};\n","import Element from '../core/core.element.js';\nimport {_angleBetween, getAngleFromPoint, TAU, HALF_PI, valueOrDefault} from '../helpers/index.js';\nimport {PI, _isBetween, _limitValue} from '../helpers/helpers.math.js';\nimport {_readValueToProps} from '../helpers/helpers.options.js';\nimport type {ArcOptions, Point} from '../types/index.js';\n\n\nfunction clipArc(ctx: CanvasRenderingContext2D, element: ArcElement, endAngle: number) {\n const {startAngle, pixelMargin, x, y, outerRadius, innerRadius} = element;\n let angleMargin = pixelMargin / outerRadius;\n\n // Draw an inner border by clipping the arc and drawing a double-width border\n // Enlarge the clipping arc by 0.33 pixels to eliminate glitches between borders\n ctx.beginPath();\n ctx.arc(x, y, outerRadius, startAngle - angleMargin, endAngle + angleMargin);\n if (innerRadius > pixelMargin) {\n angleMargin = pixelMargin / innerRadius;\n ctx.arc(x, y, innerRadius, endAngle + angleMargin, startAngle - angleMargin, true);\n } else {\n ctx.arc(x, y, pixelMargin, endAngle + HALF_PI, startAngle - HALF_PI);\n }\n ctx.closePath();\n ctx.clip();\n}\n\nfunction toRadiusCorners(value) {\n return _readValueToProps(value, ['outerStart', 'outerEnd', 'innerStart', 'innerEnd']);\n}\n\n/**\n * Parse border radius from the provided options\n */\nfunction parseBorderRadius(arc: ArcElement, innerRadius: number, outerRadius: number, angleDelta: number) {\n const o = toRadiusCorners(arc.options.borderRadius);\n const halfThickness = (outerRadius - innerRadius) / 2;\n const innerLimit = Math.min(halfThickness, angleDelta * innerRadius / 2);\n\n // Outer limits are complicated. We want to compute the available angular distance at\n // a radius of outerRadius - borderRadius because for small angular distances, this term limits.\n // We compute at r = outerRadius - borderRadius because this circle defines the center of the border corners.\n //\n // If the borderRadius is large, that value can become negative.\n // This causes the outer borders to lose their radius entirely, which is rather unexpected. To solve that, if borderRadius > outerRadius\n // we know that the thickness term will dominate and compute the limits at that point\n const computeOuterLimit = (val) => {\n const outerArcLimit = (outerRadius - Math.min(halfThickness, val)) * angleDelta / 2;\n return _limitValue(val, 0, Math.min(halfThickness, outerArcLimit));\n };\n\n return {\n outerStart: computeOuterLimit(o.outerStart),\n outerEnd: computeOuterLimit(o.outerEnd),\n innerStart: _limitValue(o.innerStart, 0, innerLimit),\n innerEnd: _limitValue(o.innerEnd, 0, innerLimit),\n };\n}\n\n/**\n * Convert (r, 𝜃) to (x, y)\n */\nfunction rThetaToXY(r: number, theta: number, x: number, y: number) {\n return {\n x: x + r * Math.cos(theta),\n y: y + r * Math.sin(theta),\n };\n}\n\n\n/**\n * Path the arc, respecting border radius by separating into left and right halves.\n *\n * Start End\n *\n * 1--->a--->2 Outer\n * / \\\n * 8 3\n * | |\n * | |\n * 7 4\n * \\ /\n * 6<---b<---5 Inner\n */\nfunction pathArc(\n ctx: CanvasRenderingContext2D,\n element: ArcElement,\n offset: number,\n spacing: number,\n end: number,\n circular: boolean,\n) {\n const {x, y, startAngle: start, pixelMargin, innerRadius: innerR} = element;\n\n const outerRadius = Math.max(element.outerRadius + spacing + offset - pixelMargin, 0);\n const innerRadius = innerR > 0 ? innerR + spacing + offset + pixelMargin : 0;\n\n let spacingOffset = 0;\n const alpha = end - start;\n\n if (spacing) {\n // When spacing is present, it is the same for all items\n // So we adjust the start and end angle of the arc such that\n // the distance is the same as it would be without the spacing\n const noSpacingInnerRadius = innerR > 0 ? innerR - spacing : 0;\n const noSpacingOuterRadius = outerRadius > 0 ? outerRadius - spacing : 0;\n const avNogSpacingRadius = (noSpacingInnerRadius + noSpacingOuterRadius) / 2;\n const adjustedAngle = avNogSpacingRadius !== 0 ? (alpha * avNogSpacingRadius) / (avNogSpacingRadius + spacing) : alpha;\n spacingOffset = (alpha - adjustedAngle) / 2;\n }\n\n const beta = Math.max(0.001, alpha * outerRadius - offset / PI) / outerRadius;\n const angleOffset = (alpha - beta) / 2;\n const startAngle = start + angleOffset + spacingOffset;\n const endAngle = end - angleOffset - spacingOffset;\n const {outerStart, outerEnd, innerStart, innerEnd} = parseBorderRadius(element, innerRadius, outerRadius, endAngle - startAngle);\n\n const outerStartAdjustedRadius = outerRadius - outerStart;\n const outerEndAdjustedRadius = outerRadius - outerEnd;\n const outerStartAdjustedAngle = startAngle + outerStart / outerStartAdjustedRadius;\n const outerEndAdjustedAngle = endAngle - outerEnd / outerEndAdjustedRadius;\n\n const innerStartAdjustedRadius = innerRadius + innerStart;\n const innerEndAdjustedRadius = innerRadius + innerEnd;\n const innerStartAdjustedAngle = startAngle + innerStart / innerStartAdjustedRadius;\n const innerEndAdjustedAngle = endAngle - innerEnd / innerEndAdjustedRadius;\n\n ctx.beginPath();\n\n if (circular) {\n // The first arc segments from point 1 to point a to point 2\n const outerMidAdjustedAngle = (outerStartAdjustedAngle + outerEndAdjustedAngle) / 2;\n ctx.arc(x, y, outerRadius, outerStartAdjustedAngle, outerMidAdjustedAngle);\n ctx.arc(x, y, outerRadius, outerMidAdjustedAngle, outerEndAdjustedAngle);\n\n // The corner segment from point 2 to point 3\n if (outerEnd > 0) {\n const pCenter = rThetaToXY(outerEndAdjustedRadius, outerEndAdjustedAngle, x, y);\n ctx.arc(pCenter.x, pCenter.y, outerEnd, outerEndAdjustedAngle, endAngle + HALF_PI);\n }\n\n // The line from point 3 to point 4\n const p4 = rThetaToXY(innerEndAdjustedRadius, endAngle, x, y);\n ctx.lineTo(p4.x, p4.y);\n\n // The corner segment from point 4 to point 5\n if (innerEnd > 0) {\n const pCenter = rThetaToXY(innerEndAdjustedRadius, innerEndAdjustedAngle, x, y);\n ctx.arc(pCenter.x, pCenter.y, innerEnd, endAngle + HALF_PI, innerEndAdjustedAngle + Math.PI);\n }\n\n // The inner arc from point 5 to point b to point 6\n const innerMidAdjustedAngle = ((endAngle - (innerEnd / innerRadius)) + (startAngle + (innerStart / innerRadius))) / 2;\n ctx.arc(x, y, innerRadius, endAngle - (innerEnd / innerRadius), innerMidAdjustedAngle, true);\n ctx.arc(x, y, innerRadius, innerMidAdjustedAngle, startAngle + (innerStart / innerRadius), true);\n\n // The corner segment from point 6 to point 7\n if (innerStart > 0) {\n const pCenter = rThetaToXY(innerStartAdjustedRadius, innerStartAdjustedAngle, x, y);\n ctx.arc(pCenter.x, pCenter.y, innerStart, innerStartAdjustedAngle + Math.PI, startAngle - HALF_PI);\n }\n\n // The line from point 7 to point 8\n const p8 = rThetaToXY(outerStartAdjustedRadius, startAngle, x, y);\n ctx.lineTo(p8.x, p8.y);\n\n // The corner segment from point 8 to point 1\n if (outerStart > 0) {\n const pCenter = rThetaToXY(outerStartAdjustedRadius, outerStartAdjustedAngle, x, y);\n ctx.arc(pCenter.x, pCenter.y, outerStart, startAngle - HALF_PI, outerStartAdjustedAngle);\n }\n } else {\n ctx.moveTo(x, y);\n\n const outerStartX = Math.cos(outerStartAdjustedAngle) * outerRadius + x;\n const outerStartY = Math.sin(outerStartAdjustedAngle) * outerRadius + y;\n ctx.lineTo(outerStartX, outerStartY);\n\n const outerEndX = Math.cos(outerEndAdjustedAngle) * outerRadius + x;\n const outerEndY = Math.sin(outerEndAdjustedAngle) * outerRadius + y;\n ctx.lineTo(outerEndX, outerEndY);\n }\n\n ctx.closePath();\n}\n\nfunction drawArc(\n ctx: CanvasRenderingContext2D,\n element: ArcElement,\n offset: number,\n spacing: number,\n circular: boolean,\n) {\n const {fullCircles, startAngle, circumference} = element;\n let endAngle = element.endAngle;\n if (fullCircles) {\n pathArc(ctx, element, offset, spacing, endAngle, circular);\n for (let i = 0; i < fullCircles; ++i) {\n ctx.fill();\n }\n if (!isNaN(circumference)) {\n endAngle = startAngle + (circumference % TAU || TAU);\n }\n }\n pathArc(ctx, element, offset, spacing, endAngle, circular);\n ctx.fill();\n return endAngle;\n}\n\nfunction drawBorder(\n ctx: CanvasRenderingContext2D,\n element: ArcElement,\n offset: number,\n spacing: number,\n circular: boolean,\n) {\n const {fullCircles, startAngle, circumference, options} = element;\n const {borderWidth, borderJoinStyle, borderDash, borderDashOffset} = options;\n const inner = options.borderAlign === 'inner';\n\n if (!borderWidth) {\n return;\n }\n\n ctx.setLineDash(borderDash || []);\n ctx.lineDashOffset = borderDashOffset;\n\n if (inner) {\n ctx.lineWidth = borderWidth * 2;\n ctx.lineJoin = borderJoinStyle || 'round';\n } else {\n ctx.lineWidth = borderWidth;\n ctx.lineJoin = borderJoinStyle || 'bevel';\n }\n\n let endAngle = element.endAngle;\n if (fullCircles) {\n pathArc(ctx, element, offset, spacing, endAngle, circular);\n for (let i = 0; i < fullCircles; ++i) {\n ctx.stroke();\n }\n if (!isNaN(circumference)) {\n endAngle = startAngle + (circumference % TAU || TAU);\n }\n }\n\n if (inner) {\n clipArc(ctx, element, endAngle);\n }\n\n if (!fullCircles) {\n pathArc(ctx, element, offset, spacing, endAngle, circular);\n ctx.stroke();\n }\n}\n\nexport interface ArcProps extends Point {\n startAngle: number;\n endAngle: number;\n innerRadius: number;\n outerRadius: number;\n circumference: number;\n}\n\nexport default class ArcElement extends Element {\n\n static id = 'arc';\n\n static defaults = {\n borderAlign: 'center',\n borderColor: '#fff',\n borderDash: [],\n borderDashOffset: 0,\n borderJoinStyle: undefined,\n borderRadius: 0,\n borderWidth: 2,\n offset: 0,\n spacing: 0,\n angle: undefined,\n circular: true,\n };\n\n static defaultRoutes = {\n backgroundColor: 'backgroundColor'\n };\n\n static descriptors = {\n _scriptable: true,\n _indexable: (name) => name !== 'borderDash'\n };\n\n circumference: number;\n endAngle: number;\n fullCircles: number;\n innerRadius: number;\n outerRadius: number;\n pixelMargin: number;\n startAngle: number;\n\n constructor(cfg) {\n super();\n\n this.options = undefined;\n this.circumference = undefined;\n this.startAngle = undefined;\n this.endAngle = undefined;\n this.innerRadius = undefined;\n this.outerRadius = undefined;\n this.pixelMargin = 0;\n this.fullCircles = 0;\n\n if (cfg) {\n Object.assign(this, cfg);\n }\n }\n\n inRange(chartX: number, chartY: number, useFinalPosition: boolean) {\n const point = this.getProps(['x', 'y'], useFinalPosition);\n const {angle, distance} = getAngleFromPoint(point, {x: chartX, y: chartY});\n const {startAngle, endAngle, innerRadius, outerRadius, circumference} = this.getProps([\n 'startAngle',\n 'endAngle',\n 'innerRadius',\n 'outerRadius',\n 'circumference'\n ], useFinalPosition);\n const rAdjust = (this.options.spacing + this.options.borderWidth) / 2;\n const _circumference = valueOrDefault(circumference, endAngle - startAngle);\n const betweenAngles = _circumference >= TAU || _angleBetween(angle, startAngle, endAngle);\n const withinRadius = _isBetween(distance, innerRadius + rAdjust, outerRadius + rAdjust);\n\n return (betweenAngles && withinRadius);\n }\n\n getCenterPoint(useFinalPosition: boolean) {\n const {x, y, startAngle, endAngle, innerRadius, outerRadius} = this.getProps([\n 'x',\n 'y',\n 'startAngle',\n 'endAngle',\n 'innerRadius',\n 'outerRadius'\n ], useFinalPosition);\n const {offset, spacing} = this.options;\n const halfAngle = (startAngle + endAngle) / 2;\n const halfRadius = (innerRadius + outerRadius + spacing + offset) / 2;\n return {\n x: x + Math.cos(halfAngle) * halfRadius,\n y: y + Math.sin(halfAngle) * halfRadius\n };\n }\n\n tooltipPosition(useFinalPosition: boolean) {\n return this.getCenterPoint(useFinalPosition);\n }\n\n draw(ctx: CanvasRenderingContext2D) {\n const {options, circumference} = this;\n const offset = (options.offset || 0) / 4;\n const spacing = (options.spacing || 0) / 2;\n const circular = options.circular;\n this.pixelMargin = (options.borderAlign === 'inner') ? 0.33 : 0;\n this.fullCircles = circumference > TAU ? Math.floor(circumference / TAU) : 0;\n\n if (circumference === 0 || this.innerRadius < 0 || this.outerRadius < 0) {\n return;\n }\n\n ctx.save();\n\n const halfAngle = (this.startAngle + this.endAngle) / 2;\n ctx.translate(Math.cos(halfAngle) * offset, Math.sin(halfAngle) * offset);\n const fix = 1 - Math.sin(Math.min(PI, circumference || 0));\n const radiusOffset = offset * fix;\n\n ctx.fillStyle = options.backgroundColor;\n ctx.strokeStyle = options.borderColor;\n\n drawArc(ctx, this, radiusOffset, spacing, circular);\n drawBorder(ctx, this, radiusOffset, spacing, circular);\n\n ctx.restore();\n }\n}\n","import Element from '../core/core.element.js';\nimport {_bezierInterpolation, _pointInLine, _steppedInterpolation} from '../helpers/helpers.interpolation.js';\nimport {_computeSegments, _boundSegments} from '../helpers/helpers.segment.js';\nimport {_steppedLineTo, _bezierCurveTo} from '../helpers/helpers.canvas.js';\nimport {_updateBezierControlPoints} from '../helpers/helpers.curve.js';\nimport {valueOrDefault} from '../helpers/index.js';\n\n/**\n * @typedef { import('./element.point.js').default } PointElement\n */\n\nfunction setStyle(ctx, options, style = options) {\n ctx.lineCap = valueOrDefault(style.borderCapStyle, options.borderCapStyle);\n ctx.setLineDash(valueOrDefault(style.borderDash, options.borderDash));\n ctx.lineDashOffset = valueOrDefault(style.borderDashOffset, options.borderDashOffset);\n ctx.lineJoin = valueOrDefault(style.borderJoinStyle, options.borderJoinStyle);\n ctx.lineWidth = valueOrDefault(style.borderWidth, options.borderWidth);\n ctx.strokeStyle = valueOrDefault(style.borderColor, options.borderColor);\n}\n\nfunction lineTo(ctx, previous, target) {\n ctx.lineTo(target.x, target.y);\n}\n\n/**\n * @returns {any}\n */\nfunction getLineMethod(options) {\n if (options.stepped) {\n return _steppedLineTo;\n }\n\n if (options.tension || options.cubicInterpolationMode === 'monotone') {\n return _bezierCurveTo;\n }\n\n return lineTo;\n}\n\nfunction pathVars(points, segment, params = {}) {\n const count = points.length;\n const {start: paramsStart = 0, end: paramsEnd = count - 1} = params;\n const {start: segmentStart, end: segmentEnd} = segment;\n const start = Math.max(paramsStart, segmentStart);\n const end = Math.min(paramsEnd, segmentEnd);\n const outside = paramsStart < segmentStart && paramsEnd < segmentStart || paramsStart > segmentEnd && paramsEnd > segmentEnd;\n\n return {\n count,\n start,\n loop: segment.loop,\n ilen: end < start && !outside ? count + end - start : end - start\n };\n}\n\n/**\n * Create path from points, grouping by truncated x-coordinate\n * Points need to be in order by x-coordinate for this to work efficiently\n * @param {CanvasRenderingContext2D|Path2D} ctx - Context\n * @param {LineElement} line\n * @param {object} segment\n * @param {number} segment.start - start index of the segment, referring the points array\n * @param {number} segment.end - end index of the segment, referring the points array\n * @param {boolean} segment.loop - indicates that the segment is a loop\n * @param {object} params\n * @param {boolean} params.move - move to starting point (vs line to it)\n * @param {boolean} params.reverse - path the segment from end to start\n * @param {number} params.start - limit segment to points starting from `start` index\n * @param {number} params.end - limit segment to points ending at `start` + `count` index\n */\nfunction pathSegment(ctx, line, segment, params) {\n const {points, options} = line;\n const {count, start, loop, ilen} = pathVars(points, segment, params);\n const lineMethod = getLineMethod(options);\n // eslint-disable-next-line prefer-const\n let {move = true, reverse} = params || {};\n let i, point, prev;\n\n for (i = 0; i <= ilen; ++i) {\n point = points[(start + (reverse ? ilen - i : i)) % count];\n\n if (point.skip) {\n // If there is a skipped point inside a segment, spanGaps must be true\n continue;\n } else if (move) {\n ctx.moveTo(point.x, point.y);\n move = false;\n } else {\n lineMethod(ctx, prev, point, reverse, options.stepped);\n }\n\n prev = point;\n }\n\n if (loop) {\n point = points[(start + (reverse ? ilen : 0)) % count];\n lineMethod(ctx, prev, point, reverse, options.stepped);\n }\n\n return !!loop;\n}\n\n/**\n * Create path from points, grouping by truncated x-coordinate\n * Points need to be in order by x-coordinate for this to work efficiently\n * @param {CanvasRenderingContext2D|Path2D} ctx - Context\n * @param {LineElement} line\n * @param {object} segment\n * @param {number} segment.start - start index of the segment, referring the points array\n * @param {number} segment.end - end index of the segment, referring the points array\n * @param {boolean} segment.loop - indicates that the segment is a loop\n * @param {object} params\n * @param {boolean} params.move - move to starting point (vs line to it)\n * @param {boolean} params.reverse - path the segment from end to start\n * @param {number} params.start - limit segment to points starting from `start` index\n * @param {number} params.end - limit segment to points ending at `start` + `count` index\n */\nfunction fastPathSegment(ctx, line, segment, params) {\n const points = line.points;\n const {count, start, ilen} = pathVars(points, segment, params);\n const {move = true, reverse} = params || {};\n let avgX = 0;\n let countX = 0;\n let i, point, prevX, minY, maxY, lastY;\n\n const pointIndex = (index) => (start + (reverse ? ilen - index : index)) % count;\n const drawX = () => {\n if (minY !== maxY) {\n // Draw line to maxY and minY, using the average x-coordinate\n ctx.lineTo(avgX, maxY);\n ctx.lineTo(avgX, minY);\n // Line to y-value of last point in group. So the line continues\n // from correct position. Not using move, to have solid path.\n ctx.lineTo(avgX, lastY);\n }\n };\n\n if (move) {\n point = points[pointIndex(0)];\n ctx.moveTo(point.x, point.y);\n }\n\n for (i = 0; i <= ilen; ++i) {\n point = points[pointIndex(i)];\n\n if (point.skip) {\n // If there is a skipped point inside a segment, spanGaps must be true\n continue;\n }\n\n const x = point.x;\n const y = point.y;\n const truncX = x | 0; // truncated x-coordinate\n\n if (truncX === prevX) {\n // Determine `minY` / `maxY` and `avgX` while we stay within same x-position\n if (y < minY) {\n minY = y;\n } else if (y > maxY) {\n maxY = y;\n }\n // For first point in group, countX is `0`, so average will be `x` / 1.\n avgX = (countX * avgX + x) / ++countX;\n } else {\n drawX();\n // Draw line to next x-position, using the first (or only)\n // y-value in that group\n ctx.lineTo(x, y);\n\n prevX = truncX;\n countX = 0;\n minY = maxY = y;\n }\n // Keep track of the last y-value in group\n lastY = y;\n }\n drawX();\n}\n\n/**\n * @param {LineElement} line - the line\n * @returns {function}\n * @private\n */\nfunction _getSegmentMethod(line) {\n const opts = line.options;\n const borderDash = opts.borderDash && opts.borderDash.length;\n const useFastPath = !line._decimated && !line._loop && !opts.tension && opts.cubicInterpolationMode !== 'monotone' && !opts.stepped && !borderDash;\n return useFastPath ? fastPathSegment : pathSegment;\n}\n\n/**\n * @private\n */\nfunction _getInterpolationMethod(options) {\n if (options.stepped) {\n return _steppedInterpolation;\n }\n\n if (options.tension || options.cubicInterpolationMode === 'monotone') {\n return _bezierInterpolation;\n }\n\n return _pointInLine;\n}\n\nfunction strokePathWithCache(ctx, line, start, count) {\n let path = line._path;\n if (!path) {\n path = line._path = new Path2D();\n if (line.path(path, start, count)) {\n path.closePath();\n }\n }\n setStyle(ctx, line.options);\n ctx.stroke(path);\n}\n\nfunction strokePathDirect(ctx, line, start, count) {\n const {segments, options} = line;\n const segmentMethod = _getSegmentMethod(line);\n\n for (const segment of segments) {\n setStyle(ctx, options, segment.style);\n ctx.beginPath();\n if (segmentMethod(ctx, line, segment, {start, end: start + count - 1})) {\n ctx.closePath();\n }\n ctx.stroke();\n }\n}\n\nconst usePath2D = typeof Path2D === 'function';\n\nfunction draw(ctx, line, start, count) {\n if (usePath2D && !line.options.segment) {\n strokePathWithCache(ctx, line, start, count);\n } else {\n strokePathDirect(ctx, line, start, count);\n }\n}\n\nexport default class LineElement extends Element {\n\n static id = 'line';\n\n /**\n * @type {any}\n */\n static defaults = {\n borderCapStyle: 'butt',\n borderDash: [],\n borderDashOffset: 0,\n borderJoinStyle: 'miter',\n borderWidth: 3,\n capBezierPoints: true,\n cubicInterpolationMode: 'default',\n fill: false,\n spanGaps: false,\n stepped: false,\n tension: 0,\n };\n\n /**\n * @type {any}\n */\n static defaultRoutes = {\n backgroundColor: 'backgroundColor',\n borderColor: 'borderColor'\n };\n\n\n static descriptors = {\n _scriptable: true,\n _indexable: (name) => name !== 'borderDash' && name !== 'fill',\n };\n\n\n constructor(cfg) {\n super();\n\n this.animated = true;\n this.options = undefined;\n this._chart = undefined;\n this._loop = undefined;\n this._fullLoop = undefined;\n this._path = undefined;\n this._points = undefined;\n this._segments = undefined;\n this._decimated = false;\n this._pointsUpdated = false;\n this._datasetIndex = undefined;\n\n if (cfg) {\n Object.assign(this, cfg);\n }\n }\n\n updateControlPoints(chartArea, indexAxis) {\n const options = this.options;\n if ((options.tension || options.cubicInterpolationMode === 'monotone') && !options.stepped && !this._pointsUpdated) {\n const loop = options.spanGaps ? this._loop : this._fullLoop;\n _updateBezierControlPoints(this._points, options, chartArea, loop, indexAxis);\n this._pointsUpdated = true;\n }\n }\n\n set points(points) {\n this._points = points;\n delete this._segments;\n delete this._path;\n this._pointsUpdated = false;\n }\n\n get points() {\n return this._points;\n }\n\n get segments() {\n return this._segments || (this._segments = _computeSegments(this, this.options.segment));\n }\n\n /**\n\t * First non-skipped point on this line\n\t * @returns {PointElement|undefined}\n\t */\n first() {\n const segments = this.segments;\n const points = this.points;\n return segments.length && points[segments[0].start];\n }\n\n /**\n\t * Last non-skipped point on this line\n\t * @returns {PointElement|undefined}\n\t */\n last() {\n const segments = this.segments;\n const points = this.points;\n const count = segments.length;\n return count && points[segments[count - 1].end];\n }\n\n /**\n\t * Interpolate a point in this line at the same value on `property` as\n\t * the reference `point` provided\n\t * @param {PointElement} point - the reference point\n\t * @param {string} property - the property to match on\n\t * @returns {PointElement|undefined}\n\t */\n interpolate(point, property) {\n const options = this.options;\n const value = point[property];\n const points = this.points;\n const segments = _boundSegments(this, {property, start: value, end: value});\n\n if (!segments.length) {\n return;\n }\n\n const result = [];\n const _interpolate = _getInterpolationMethod(options);\n let i, ilen;\n for (i = 0, ilen = segments.length; i < ilen; ++i) {\n const {start, end} = segments[i];\n const p1 = points[start];\n const p2 = points[end];\n if (p1 === p2) {\n result.push(p1);\n continue;\n }\n const t = Math.abs((value - p1[property]) / (p2[property] - p1[property]));\n const interpolated = _interpolate(p1, p2, t, options.stepped);\n interpolated[property] = point[property];\n result.push(interpolated);\n }\n return result.length === 1 ? result[0] : result;\n }\n\n /**\n\t * Append a segment of this line to current path.\n\t * @param {CanvasRenderingContext2D} ctx\n\t * @param {object} segment\n\t * @param {number} segment.start - start index of the segment, referring the points array\n \t * @param {number} segment.end - end index of the segment, referring the points array\n \t * @param {boolean} segment.loop - indicates that the segment is a loop\n\t * @param {object} params\n\t * @param {boolean} params.move - move to starting point (vs line to it)\n\t * @param {boolean} params.reverse - path the segment from end to start\n\t * @param {number} params.start - limit segment to points starting from `start` index\n\t * @param {number} params.end - limit segment to points ending at `start` + `count` index\n\t * @returns {undefined|boolean} - true if the segment is a full loop (path should be closed)\n\t */\n pathSegment(ctx, segment, params) {\n const segmentMethod = _getSegmentMethod(this);\n return segmentMethod(ctx, this, segment, params);\n }\n\n /**\n\t * Append all segments of this line to current path.\n\t * @param {CanvasRenderingContext2D|Path2D} ctx\n\t * @param {number} [start]\n\t * @param {number} [count]\n\t * @returns {undefined|boolean} - true if line is a full loop (path should be closed)\n\t */\n path(ctx, start, count) {\n const segments = this.segments;\n const segmentMethod = _getSegmentMethod(this);\n let loop = this._loop;\n\n start = start || 0;\n count = count || (this.points.length - start);\n\n for (const segment of segments) {\n loop &= segmentMethod(ctx, this, segment, {start, end: start + count - 1});\n }\n return !!loop;\n }\n\n /**\n\t * Draw\n\t * @param {CanvasRenderingContext2D} ctx\n\t * @param {object} chartArea\n\t * @param {number} [start]\n\t * @param {number} [count]\n\t */\n draw(ctx, chartArea, start, count) {\n const options = this.options || {};\n const points = this.points || [];\n\n if (points.length && options.borderWidth) {\n ctx.save();\n\n draw(ctx, this, start, count);\n\n ctx.restore();\n }\n\n if (this.animated) {\n // When line is animated, the control points and path are not cached.\n this._pointsUpdated = false;\n this._path = undefined;\n }\n }\n}\n","import Element from '../core/core.element.js';\nimport {drawPoint, _isPointInArea} from '../helpers/helpers.canvas.js';\nimport type {\n CartesianParsedData,\n ChartArea,\n Point,\n PointHoverOptions,\n PointOptions,\n} from '../types/index.js';\n\nfunction inRange(el: PointElement, pos: number, axis: 'x' | 'y', useFinalPosition?: boolean) {\n const options = el.options;\n const {[axis]: value} = el.getProps([axis], useFinalPosition);\n\n return (Math.abs(pos - value) < options.radius + options.hitRadius);\n}\n\nexport type PointProps = Point\n\nexport default class PointElement extends Element {\n\n static id = 'point';\n\n parsed: CartesianParsedData;\n skip?: boolean;\n stop?: boolean;\n\n /**\n * @type {any}\n */\n static defaults = {\n borderWidth: 1,\n hitRadius: 1,\n hoverBorderWidth: 1,\n hoverRadius: 4,\n pointStyle: 'circle',\n radius: 3,\n rotation: 0\n };\n\n /**\n * @type {any}\n */\n static defaultRoutes = {\n backgroundColor: 'backgroundColor',\n borderColor: 'borderColor'\n };\n\n constructor(cfg) {\n super();\n\n this.options = undefined;\n this.parsed = undefined;\n this.skip = undefined;\n this.stop = undefined;\n\n if (cfg) {\n Object.assign(this, cfg);\n }\n }\n\n inRange(mouseX: number, mouseY: number, useFinalPosition?: boolean) {\n const options = this.options;\n const {x, y} = this.getProps(['x', 'y'], useFinalPosition);\n return ((Math.pow(mouseX - x, 2) + Math.pow(mouseY - y, 2)) < Math.pow(options.hitRadius + options.radius, 2));\n }\n\n inXRange(mouseX: number, useFinalPosition?: boolean) {\n return inRange(this, mouseX, 'x', useFinalPosition);\n }\n\n inYRange(mouseY: number, useFinalPosition?: boolean) {\n return inRange(this, mouseY, 'y', useFinalPosition);\n }\n\n getCenterPoint(useFinalPosition?: boolean) {\n const {x, y} = this.getProps(['x', 'y'], useFinalPosition);\n return {x, y};\n }\n\n size(options?: Partial) {\n options = options || this.options || {};\n let radius = options.radius || 0;\n radius = Math.max(radius, radius && options.hoverRadius || 0);\n const borderWidth = radius && options.borderWidth || 0;\n return (radius + borderWidth) * 2;\n }\n\n draw(ctx: CanvasRenderingContext2D, area: ChartArea) {\n const options = this.options;\n\n if (this.skip || options.radius < 0.1 || !_isPointInArea(this, area, this.size(options) / 2)) {\n return;\n }\n\n ctx.strokeStyle = options.borderColor;\n ctx.lineWidth = options.borderWidth;\n ctx.fillStyle = options.backgroundColor;\n drawPoint(ctx, options, this.x, this.y);\n }\n\n getRange() {\n const options = this.options || {};\n // @ts-expect-error Fallbacks should never be hit in practice\n return options.radius + options.hitRadius;\n }\n}\n","import Element from '../core/core.element.js';\nimport {isObject, _isBetween, _limitValue} from '../helpers/index.js';\nimport {addRoundedRectPath} from '../helpers/helpers.canvas.js';\nimport {toTRBL, toTRBLCorners} from '../helpers/helpers.options.js';\n\n/** @typedef {{ x: number, y: number, base: number, horizontal: boolean, width: number, height: number }} BarProps */\n\n/**\n * Helper function to get the bounds of the bar regardless of the orientation\n * @param {BarElement} bar the bar\n * @param {boolean} [useFinalPosition]\n * @return {object} bounds of the bar\n * @private\n */\nfunction getBarBounds(bar, useFinalPosition) {\n const {x, y, base, width, height} = /** @type {BarProps} */ (bar.getProps(['x', 'y', 'base', 'width', 'height'], useFinalPosition));\n\n let left, right, top, bottom, half;\n\n if (bar.horizontal) {\n half = height / 2;\n left = Math.min(x, base);\n right = Math.max(x, base);\n top = y - half;\n bottom = y + half;\n } else {\n half = width / 2;\n left = x - half;\n right = x + half;\n top = Math.min(y, base);\n bottom = Math.max(y, base);\n }\n\n return {left, top, right, bottom};\n}\n\nfunction skipOrLimit(skip, value, min, max) {\n return skip ? 0 : _limitValue(value, min, max);\n}\n\nfunction parseBorderWidth(bar, maxW, maxH) {\n const value = bar.options.borderWidth;\n const skip = bar.borderSkipped;\n const o = toTRBL(value);\n\n return {\n t: skipOrLimit(skip.top, o.top, 0, maxH),\n r: skipOrLimit(skip.right, o.right, 0, maxW),\n b: skipOrLimit(skip.bottom, o.bottom, 0, maxH),\n l: skipOrLimit(skip.left, o.left, 0, maxW)\n };\n}\n\nfunction parseBorderRadius(bar, maxW, maxH) {\n const {enableBorderRadius} = bar.getProps(['enableBorderRadius']);\n const value = bar.options.borderRadius;\n const o = toTRBLCorners(value);\n const maxR = Math.min(maxW, maxH);\n const skip = bar.borderSkipped;\n\n // If the value is an object, assume the user knows what they are doing\n // and apply as directed.\n const enableBorder = enableBorderRadius || isObject(value);\n\n return {\n topLeft: skipOrLimit(!enableBorder || skip.top || skip.left, o.topLeft, 0, maxR),\n topRight: skipOrLimit(!enableBorder || skip.top || skip.right, o.topRight, 0, maxR),\n bottomLeft: skipOrLimit(!enableBorder || skip.bottom || skip.left, o.bottomLeft, 0, maxR),\n bottomRight: skipOrLimit(!enableBorder || skip.bottom || skip.right, o.bottomRight, 0, maxR)\n };\n}\n\nfunction boundingRects(bar) {\n const bounds = getBarBounds(bar);\n const width = bounds.right - bounds.left;\n const height = bounds.bottom - bounds.top;\n const border = parseBorderWidth(bar, width / 2, height / 2);\n const radius = parseBorderRadius(bar, width / 2, height / 2);\n\n return {\n outer: {\n x: bounds.left,\n y: bounds.top,\n w: width,\n h: height,\n radius\n },\n inner: {\n x: bounds.left + border.l,\n y: bounds.top + border.t,\n w: width - border.l - border.r,\n h: height - border.t - border.b,\n radius: {\n topLeft: Math.max(0, radius.topLeft - Math.max(border.t, border.l)),\n topRight: Math.max(0, radius.topRight - Math.max(border.t, border.r)),\n bottomLeft: Math.max(0, radius.bottomLeft - Math.max(border.b, border.l)),\n bottomRight: Math.max(0, radius.bottomRight - Math.max(border.b, border.r)),\n }\n }\n };\n}\n\nfunction inRange(bar, x, y, useFinalPosition) {\n const skipX = x === null;\n const skipY = y === null;\n const skipBoth = skipX && skipY;\n const bounds = bar && !skipBoth && getBarBounds(bar, useFinalPosition);\n\n return bounds\n\t\t&& (skipX || _isBetween(x, bounds.left, bounds.right))\n\t\t&& (skipY || _isBetween(y, bounds.top, bounds.bottom));\n}\n\nfunction hasRadius(radius) {\n return radius.topLeft || radius.topRight || radius.bottomLeft || radius.bottomRight;\n}\n\n/**\n * Add a path of a rectangle to the current sub-path\n * @param {CanvasRenderingContext2D} ctx Context\n * @param {*} rect Bounding rect\n */\nfunction addNormalRectPath(ctx, rect) {\n ctx.rect(rect.x, rect.y, rect.w, rect.h);\n}\n\nfunction inflateRect(rect, amount, refRect = {}) {\n const x = rect.x !== refRect.x ? -amount : 0;\n const y = rect.y !== refRect.y ? -amount : 0;\n const w = (rect.x + rect.w !== refRect.x + refRect.w ? amount : 0) - x;\n const h = (rect.y + rect.h !== refRect.y + refRect.h ? amount : 0) - y;\n return {\n x: rect.x + x,\n y: rect.y + y,\n w: rect.w + w,\n h: rect.h + h,\n radius: rect.radius\n };\n}\n\nexport default class BarElement extends Element {\n\n static id = 'bar';\n\n /**\n * @type {any}\n */\n static defaults = {\n borderSkipped: 'start',\n borderWidth: 0,\n borderRadius: 0,\n inflateAmount: 'auto',\n pointStyle: undefined\n };\n\n /**\n * @type {any}\n */\n static defaultRoutes = {\n backgroundColor: 'backgroundColor',\n borderColor: 'borderColor'\n };\n\n constructor(cfg) {\n super();\n\n this.options = undefined;\n this.horizontal = undefined;\n this.base = undefined;\n this.width = undefined;\n this.height = undefined;\n this.inflateAmount = undefined;\n\n if (cfg) {\n Object.assign(this, cfg);\n }\n }\n\n draw(ctx) {\n const {inflateAmount, options: {borderColor, backgroundColor}} = this;\n const {inner, outer} = boundingRects(this);\n const addRectPath = hasRadius(outer.radius) ? addRoundedRectPath : addNormalRectPath;\n\n ctx.save();\n\n if (outer.w !== inner.w || outer.h !== inner.h) {\n ctx.beginPath();\n addRectPath(ctx, inflateRect(outer, inflateAmount, inner));\n ctx.clip();\n addRectPath(ctx, inflateRect(inner, -inflateAmount, outer));\n ctx.fillStyle = borderColor;\n ctx.fill('evenodd');\n }\n\n ctx.beginPath();\n addRectPath(ctx, inflateRect(inner, inflateAmount));\n ctx.fillStyle = backgroundColor;\n ctx.fill();\n\n ctx.restore();\n }\n\n inRange(mouseX, mouseY, useFinalPosition) {\n return inRange(this, mouseX, mouseY, useFinalPosition);\n }\n\n inXRange(mouseX, useFinalPosition) {\n return inRange(this, mouseX, null, useFinalPosition);\n }\n\n inYRange(mouseY, useFinalPosition) {\n return inRange(this, null, mouseY, useFinalPosition);\n }\n\n getCenterPoint(useFinalPosition) {\n const {x, y, base, horizontal} = /** @type {BarProps} */ (this.getProps(['x', 'y', 'base', 'horizontal'], useFinalPosition));\n return {\n x: horizontal ? (x + base) / 2 : x,\n y: horizontal ? y : (y + base) / 2\n };\n }\n\n getRange(axis) {\n return axis === 'x' ? this.width / 2 : this.height / 2;\n }\n}\n","import {DoughnutController, PolarAreaController} from '../index.js';\nimport type {Chart, ChartDataset} from '../types.js';\n\nexport interface ColorsPluginOptions {\n enabled?: boolean;\n forceOverride?: boolean;\n}\n\ninterface ColorsDescriptor {\n backgroundColor?: unknown;\n borderColor?: unknown;\n}\n\nconst BORDER_COLORS = [\n 'rgb(54, 162, 235)', // blue\n 'rgb(255, 99, 132)', // red\n 'rgb(255, 159, 64)', // orange\n 'rgb(255, 205, 86)', // yellow\n 'rgb(75, 192, 192)', // green\n 'rgb(153, 102, 255)', // purple\n 'rgb(201, 203, 207)' // grey\n];\n\n// Border colors with 50% transparency\nconst BACKGROUND_COLORS = /* #__PURE__ */ BORDER_COLORS.map(color => color.replace('rgb(', 'rgba(').replace(')', ', 0.5)'));\n\nfunction getBorderColor(i: number) {\n return BORDER_COLORS[i % BORDER_COLORS.length];\n}\n\nfunction getBackgroundColor(i: number) {\n return BACKGROUND_COLORS[i % BACKGROUND_COLORS.length];\n}\n\nfunction colorizeDefaultDataset(dataset: ChartDataset, i: number) {\n dataset.borderColor = getBorderColor(i);\n dataset.backgroundColor = getBackgroundColor(i);\n\n return ++i;\n}\n\nfunction colorizeDoughnutDataset(dataset: ChartDataset, i: number) {\n dataset.backgroundColor = dataset.data.map(() => getBorderColor(i++));\n\n return i;\n}\n\nfunction colorizePolarAreaDataset(dataset: ChartDataset, i: number) {\n dataset.backgroundColor = dataset.data.map(() => getBackgroundColor(i++));\n\n return i;\n}\n\nfunction getColorizer(chart: Chart) {\n let i = 0;\n\n return (dataset: ChartDataset, datasetIndex: number) => {\n const controller = chart.getDatasetMeta(datasetIndex).controller;\n\n if (controller instanceof DoughnutController) {\n i = colorizeDoughnutDataset(dataset, i);\n } else if (controller instanceof PolarAreaController) {\n i = colorizePolarAreaDataset(dataset, i);\n } else if (controller) {\n i = colorizeDefaultDataset(dataset, i);\n }\n };\n}\n\nfunction containsColorsDefinitions(\n descriptors: ColorsDescriptor[] | Record\n) {\n let k: number | string;\n\n for (k in descriptors) {\n if (descriptors[k].borderColor || descriptors[k].backgroundColor) {\n return true;\n }\n }\n\n return false;\n}\n\nfunction containsColorsDefinition(\n descriptor: ColorsDescriptor\n) {\n return descriptor && (descriptor.borderColor || descriptor.backgroundColor);\n}\n\nexport default {\n id: 'colors',\n\n defaults: {\n enabled: true,\n forceOverride: false\n } as ColorsPluginOptions,\n\n beforeLayout(chart: Chart, _args, options: ColorsPluginOptions) {\n if (!options.enabled) {\n return;\n }\n\n const {\n data: {datasets},\n options: chartOptions\n } = chart.config;\n const {elements} = chartOptions;\n\n if (!options.forceOverride && (containsColorsDefinitions(datasets) || containsColorsDefinition(chartOptions) || (elements && containsColorsDefinitions(elements)))) {\n return;\n }\n\n const colorizer = getColorizer(chart);\n\n datasets.forEach(colorizer);\n }\n};\n","import {_limitValue, _lookupByKey, isNullOrUndef, resolve} from '../helpers/index.js';\n\nfunction lttbDecimation(data, start, count, availableWidth, options) {\n /**\n * Implementation of the Largest Triangle Three Buckets algorithm.\n *\n * This implementation is based on the original implementation by Sveinn Steinarsson\n * in https://github.com/sveinn-steinarsson/flot-downsample/blob/master/jquery.flot.downsample.js\n *\n * The original implementation is MIT licensed.\n */\n const samples = options.samples || availableWidth;\n // There are less points than the threshold, returning the whole array\n if (samples >= count) {\n return data.slice(start, start + count);\n }\n\n const decimated = [];\n\n const bucketWidth = (count - 2) / (samples - 2);\n let sampledIndex = 0;\n const endIndex = start + count - 1;\n // Starting from offset\n let a = start;\n let i, maxAreaPoint, maxArea, area, nextA;\n\n decimated[sampledIndex++] = data[a];\n\n for (i = 0; i < samples - 2; i++) {\n let avgX = 0;\n let avgY = 0;\n let j;\n\n // Adding offset\n const avgRangeStart = Math.floor((i + 1) * bucketWidth) + 1 + start;\n const avgRangeEnd = Math.min(Math.floor((i + 2) * bucketWidth) + 1, count) + start;\n const avgRangeLength = avgRangeEnd - avgRangeStart;\n\n for (j = avgRangeStart; j < avgRangeEnd; j++) {\n avgX += data[j].x;\n avgY += data[j].y;\n }\n\n avgX /= avgRangeLength;\n avgY /= avgRangeLength;\n\n // Adding offset\n const rangeOffs = Math.floor(i * bucketWidth) + 1 + start;\n const rangeTo = Math.min(Math.floor((i + 1) * bucketWidth) + 1, count) + start;\n const {x: pointAx, y: pointAy} = data[a];\n\n // Note that this is changed from the original algorithm which initializes these\n // values to 1. The reason for this change is that if the area is small, nextA\n // would never be set and thus a crash would occur in the next loop as `a` would become\n // `undefined`. Since the area is always positive, but could be 0 in the case of a flat trace,\n // initializing with a negative number is the correct solution.\n maxArea = area = -1;\n\n for (j = rangeOffs; j < rangeTo; j++) {\n area = 0.5 * Math.abs(\n (pointAx - avgX) * (data[j].y - pointAy) -\n (pointAx - data[j].x) * (avgY - pointAy)\n );\n\n if (area > maxArea) {\n maxArea = area;\n maxAreaPoint = data[j];\n nextA = j;\n }\n }\n\n decimated[sampledIndex++] = maxAreaPoint;\n a = nextA;\n }\n\n // Include the last point\n decimated[sampledIndex++] = data[endIndex];\n\n return decimated;\n}\n\nfunction minMaxDecimation(data, start, count, availableWidth) {\n let avgX = 0;\n let countX = 0;\n let i, point, x, y, prevX, minIndex, maxIndex, startIndex, minY, maxY;\n const decimated = [];\n const endIndex = start + count - 1;\n\n const xMin = data[start].x;\n const xMax = data[endIndex].x;\n const dx = xMax - xMin;\n\n for (i = start; i < start + count; ++i) {\n point = data[i];\n x = (point.x - xMin) / dx * availableWidth;\n y = point.y;\n const truncX = x | 0;\n\n if (truncX === prevX) {\n // Determine `minY` / `maxY` and `avgX` while we stay within same x-position\n if (y < minY) {\n minY = y;\n minIndex = i;\n } else if (y > maxY) {\n maxY = y;\n maxIndex = i;\n }\n // For first point in group, countX is `0`, so average will be `x` / 1.\n // Use point.x here because we're computing the average data `x` value\n avgX = (countX * avgX + point.x) / ++countX;\n } else {\n // Push up to 4 points, 3 for the last interval and the first point for this interval\n const lastIndex = i - 1;\n\n if (!isNullOrUndef(minIndex) && !isNullOrUndef(maxIndex)) {\n // The interval is defined by 4 points: start, min, max, end.\n // The starting point is already considered at this point, so we need to determine which\n // of the other points to add. We need to sort these points to ensure the decimated data\n // is still sorted and then ensure there are no duplicates.\n const intermediateIndex1 = Math.min(minIndex, maxIndex);\n const intermediateIndex2 = Math.max(minIndex, maxIndex);\n\n if (intermediateIndex1 !== startIndex && intermediateIndex1 !== lastIndex) {\n decimated.push({\n ...data[intermediateIndex1],\n x: avgX,\n });\n }\n if (intermediateIndex2 !== startIndex && intermediateIndex2 !== lastIndex) {\n decimated.push({\n ...data[intermediateIndex2],\n x: avgX\n });\n }\n }\n\n // lastIndex === startIndex will occur when a range has only 1 point which could\n // happen with very uneven data\n if (i > 0 && lastIndex !== startIndex) {\n // Last point in the previous interval\n decimated.push(data[lastIndex]);\n }\n\n // Start of the new interval\n decimated.push(point);\n prevX = truncX;\n countX = 0;\n minY = maxY = y;\n minIndex = maxIndex = startIndex = i;\n }\n }\n\n return decimated;\n}\n\nfunction cleanDecimatedDataset(dataset) {\n if (dataset._decimated) {\n const data = dataset._data;\n delete dataset._decimated;\n delete dataset._data;\n Object.defineProperty(dataset, 'data', {\n configurable: true,\n enumerable: true,\n writable: true,\n value: data,\n });\n }\n}\n\nfunction cleanDecimatedData(chart) {\n chart.data.datasets.forEach((dataset) => {\n cleanDecimatedDataset(dataset);\n });\n}\n\nfunction getStartAndCountOfVisiblePointsSimplified(meta, points) {\n const pointCount = points.length;\n\n let start = 0;\n let count;\n\n const {iScale} = meta;\n const {min, max, minDefined, maxDefined} = iScale.getUserBounds();\n\n if (minDefined) {\n start = _limitValue(_lookupByKey(points, iScale.axis, min).lo, 0, pointCount - 1);\n }\n if (maxDefined) {\n count = _limitValue(_lookupByKey(points, iScale.axis, max).hi + 1, start, pointCount) - start;\n } else {\n count = pointCount - start;\n }\n\n return {start, count};\n}\n\nexport default {\n id: 'decimation',\n\n defaults: {\n algorithm: 'min-max',\n enabled: false,\n },\n\n beforeElementsUpdate: (chart, args, options) => {\n if (!options.enabled) {\n // The decimation plugin may have been previously enabled. Need to remove old `dataset._data` handlers\n cleanDecimatedData(chart);\n return;\n }\n\n // Assume the entire chart is available to show a few more points than needed\n const availableWidth = chart.width;\n\n chart.data.datasets.forEach((dataset, datasetIndex) => {\n const {_data, indexAxis} = dataset;\n const meta = chart.getDatasetMeta(datasetIndex);\n const data = _data || dataset.data;\n\n if (resolve([indexAxis, chart.options.indexAxis]) === 'y') {\n // Decimation is only supported for lines that have an X indexAxis\n return;\n }\n\n if (!meta.controller.supportsDecimation) {\n // Only line datasets are supported\n return;\n }\n\n const xAxis = chart.scales[meta.xAxisID];\n if (xAxis.type !== 'linear' && xAxis.type !== 'time') {\n // Only linear interpolation is supported\n return;\n }\n\n if (chart.options.parsing) {\n // Plugin only supports data that does not need parsing\n return;\n }\n\n let {start, count} = getStartAndCountOfVisiblePointsSimplified(meta, data);\n const threshold = options.threshold || 4 * availableWidth;\n if (count <= threshold) {\n // No decimation is required until we are above this threshold\n cleanDecimatedDataset(dataset);\n return;\n }\n\n if (isNullOrUndef(_data)) {\n // First time we are seeing this dataset\n // We override the 'data' property with a setter that stores the\n // raw data in _data, but reads the decimated data from _decimated\n dataset._data = data;\n delete dataset.data;\n Object.defineProperty(dataset, 'data', {\n configurable: true,\n enumerable: true,\n get: function() {\n return this._decimated;\n },\n set: function(d) {\n this._data = d;\n }\n });\n }\n\n // Point the chart to the decimated data\n let decimated;\n switch (options.algorithm) {\n case 'lttb':\n decimated = lttbDecimation(data, start, count, availableWidth, options);\n break;\n case 'min-max':\n decimated = minMaxDecimation(data, start, count, availableWidth);\n break;\n default:\n throw new Error(`Unsupported decimation algorithm '${options.algorithm}'`);\n }\n\n dataset._decimated = decimated;\n });\n },\n\n destroy(chart) {\n cleanDecimatedData(chart);\n }\n};\n","import {_boundSegment, _boundSegments, _normalizeAngle} from '../../helpers/index.js';\n\nexport function _segments(line, target, property) {\n const segments = line.segments;\n const points = line.points;\n const tpoints = target.points;\n const parts = [];\n\n for (const segment of segments) {\n let {start, end} = segment;\n end = _findSegmentEnd(start, end, points);\n\n const bounds = _getBounds(property, points[start], points[end], segment.loop);\n\n if (!target.segments) {\n // Special case for boundary not supporting `segments` (simpleArc)\n // Bounds are provided as `target` for partial circle, or undefined for full circle\n parts.push({\n source: segment,\n target: bounds,\n start: points[start],\n end: points[end]\n });\n continue;\n }\n\n // Get all segments from `target` that intersect the bounds of current segment of `line`\n const targetSegments = _boundSegments(target, bounds);\n\n for (const tgt of targetSegments) {\n const subBounds = _getBounds(property, tpoints[tgt.start], tpoints[tgt.end], tgt.loop);\n const fillSources = _boundSegment(segment, points, subBounds);\n\n for (const fillSource of fillSources) {\n parts.push({\n source: fillSource,\n target: tgt,\n start: {\n [property]: _getEdge(bounds, subBounds, 'start', Math.max)\n },\n end: {\n [property]: _getEdge(bounds, subBounds, 'end', Math.min)\n }\n });\n }\n }\n }\n return parts;\n}\n\nexport function _getBounds(property, first, last, loop) {\n if (loop) {\n return;\n }\n let start = first[property];\n let end = last[property];\n\n if (property === 'angle') {\n start = _normalizeAngle(start);\n end = _normalizeAngle(end);\n }\n return {property, start, end};\n}\n\nexport function _pointsFromSegments(boundary, line) {\n const {x = null, y = null} = boundary || {};\n const linePoints = line.points;\n const points = [];\n line.segments.forEach(({start, end}) => {\n end = _findSegmentEnd(start, end, linePoints);\n const first = linePoints[start];\n const last = linePoints[end];\n if (y !== null) {\n points.push({x: first.x, y});\n points.push({x: last.x, y});\n } else if (x !== null) {\n points.push({x, y: first.y});\n points.push({x, y: last.y});\n }\n });\n return points;\n}\n\nexport function _findSegmentEnd(start, end, points) {\n for (;end > start; end--) {\n const point = points[end];\n if (!isNaN(point.x) && !isNaN(point.y)) {\n break;\n }\n }\n return end;\n}\n\nfunction _getEdge(a, b, prop, fn) {\n if (a && b) {\n return fn(a[prop], b[prop]);\n }\n return a ? a[prop] : b ? b[prop] : 0;\n}\n","/**\n * @typedef { import('../../core/core.controller.js').default } Chart\n * @typedef { import('../../core/core.scale.js').default } Scale\n * @typedef { import('../../elements/element.point.js').default } PointElement\n */\n\nimport {LineElement} from '../../elements/index.js';\nimport {isArray} from '../../helpers/index.js';\nimport {_pointsFromSegments} from './filler.segment.js';\n\n/**\n * @param {PointElement[] | { x: number; y: number; }} boundary\n * @param {LineElement} line\n * @return {LineElement?}\n */\nexport function _createBoundaryLine(boundary, line) {\n let points = [];\n let _loop = false;\n\n if (isArray(boundary)) {\n _loop = true;\n // @ts-ignore\n points = boundary;\n } else {\n points = _pointsFromSegments(boundary, line);\n }\n\n return points.length ? new LineElement({\n points,\n options: {tension: 0},\n _loop,\n _fullLoop: _loop\n }) : null;\n}\n\nexport function _shouldApplyFill(source) {\n return source && source.fill !== false;\n}\n","import {isObject, isFinite, valueOrDefault} from '../../helpers/helpers.core.js';\n\n/**\n * @typedef { import('../../core/core.scale.js').default } Scale\n * @typedef { import('../../elements/element.line.js').default } LineElement\n * @typedef { import('../../types/index.js').FillTarget } FillTarget\n * @typedef { import('../../types/index.js').ComplexFillTarget } ComplexFillTarget\n */\n\nexport function _resolveTarget(sources, index, propagate) {\n const source = sources[index];\n let fill = source.fill;\n const visited = [index];\n let target;\n\n if (!propagate) {\n return fill;\n }\n\n while (fill !== false && visited.indexOf(fill) === -1) {\n if (!isFinite(fill)) {\n return fill;\n }\n\n target = sources[fill];\n if (!target) {\n return false;\n }\n\n if (target.visible) {\n return fill;\n }\n\n visited.push(fill);\n fill = target.fill;\n }\n\n return false;\n}\n\n/**\n * @param {LineElement} line\n * @param {number} index\n * @param {number} count\n */\nexport function _decodeFill(line, index, count) {\n /** @type {string | {value: number}} */\n const fill = parseFillOption(line);\n\n if (isObject(fill)) {\n return isNaN(fill.value) ? false : fill;\n }\n\n let target = parseFloat(fill);\n\n if (isFinite(target) && Math.floor(target) === target) {\n return decodeTargetIndex(fill[0], index, target, count);\n }\n\n return ['origin', 'start', 'end', 'stack', 'shape'].indexOf(fill) >= 0 && fill;\n}\n\nfunction decodeTargetIndex(firstCh, index, target, count) {\n if (firstCh === '-' || firstCh === '+') {\n target = index + target;\n }\n\n if (target === index || target < 0 || target >= count) {\n return false;\n }\n\n return target;\n}\n\n/**\n * @param {FillTarget | ComplexFillTarget} fill\n * @param {Scale} scale\n * @returns {number | null}\n */\nexport function _getTargetPixel(fill, scale) {\n let pixel = null;\n if (fill === 'start') {\n pixel = scale.bottom;\n } else if (fill === 'end') {\n pixel = scale.top;\n } else if (isObject(fill)) {\n // @ts-ignore\n pixel = scale.getPixelForValue(fill.value);\n } else if (scale.getBasePixel) {\n pixel = scale.getBasePixel();\n }\n return pixel;\n}\n\n/**\n * @param {FillTarget | ComplexFillTarget} fill\n * @param {Scale} scale\n * @param {number} startValue\n * @returns {number | undefined}\n */\nexport function _getTargetValue(fill, scale, startValue) {\n let value;\n\n if (fill === 'start') {\n value = startValue;\n } else if (fill === 'end') {\n value = scale.options.reverse ? scale.min : scale.max;\n } else if (isObject(fill)) {\n // @ts-ignore\n value = fill.value;\n } else {\n value = scale.getBaseValue();\n }\n return value;\n}\n\n/**\n * @param {LineElement} line\n */\nfunction parseFillOption(line) {\n const options = line.options;\n const fillOption = options.fill;\n let fill = valueOrDefault(fillOption && fillOption.target, fillOption);\n\n if (fill === undefined) {\n fill = !!options.backgroundColor;\n }\n\n if (fill === false || fill === null) {\n return false;\n }\n\n if (fill === true) {\n return 'origin';\n }\n return fill;\n}\n","/**\n * @typedef { import('../../core/core.controller.js').default } Chart\n * @typedef { import('../../core/core.scale.js').default } Scale\n * @typedef { import('../../elements/element.point.js').default } PointElement\n */\n\nimport {LineElement} from '../../elements/index.js';\nimport {_isBetween} from '../../helpers/index.js';\nimport {_createBoundaryLine} from './filler.helper.js';\n\n/**\n * @param {{ chart: Chart; scale: Scale; index: number; line: LineElement; }} source\n * @return {LineElement}\n */\nexport function _buildStackLine(source) {\n const {scale, index, line} = source;\n const points = [];\n const segments = line.segments;\n const sourcePoints = line.points;\n const linesBelow = getLinesBelow(scale, index);\n linesBelow.push(_createBoundaryLine({x: null, y: scale.bottom}, line));\n\n for (let i = 0; i < segments.length; i++) {\n const segment = segments[i];\n for (let j = segment.start; j <= segment.end; j++) {\n addPointsBelow(points, sourcePoints[j], linesBelow);\n }\n }\n return new LineElement({points, options: {}});\n}\n\n/**\n * @param {Scale} scale\n * @param {number} index\n * @return {LineElement[]}\n */\nfunction getLinesBelow(scale, index) {\n const below = [];\n const metas = scale.getMatchingVisibleMetas('line');\n\n for (let i = 0; i < metas.length; i++) {\n const meta = metas[i];\n if (meta.index === index) {\n break;\n }\n if (!meta.hidden) {\n below.unshift(meta.dataset);\n }\n }\n return below;\n}\n\n/**\n * @param {PointElement[]} points\n * @param {PointElement} sourcePoint\n * @param {LineElement[]} linesBelow\n */\nfunction addPointsBelow(points, sourcePoint, linesBelow) {\n const postponed = [];\n for (let j = 0; j < linesBelow.length; j++) {\n const line = linesBelow[j];\n const {first, last, point} = findPoint(line, sourcePoint, 'x');\n\n if (!point || (first && last)) {\n continue;\n }\n if (first) {\n // First point of an segment -> need to add another point before this,\n // from next line below.\n postponed.unshift(point);\n } else {\n points.push(point);\n if (!last) {\n // In the middle of an segment, no need to add more points.\n break;\n }\n }\n }\n points.push(...postponed);\n}\n\n/**\n * @param {LineElement} line\n * @param {PointElement} sourcePoint\n * @param {string} property\n * @returns {{point?: PointElement, first?: boolean, last?: boolean}}\n */\nfunction findPoint(line, sourcePoint, property) {\n const point = line.interpolate(sourcePoint, property);\n if (!point) {\n return {};\n }\n\n const pointValue = point[property];\n const segments = line.segments;\n const linePoints = line.points;\n let first = false;\n let last = false;\n for (let i = 0; i < segments.length; i++) {\n const segment = segments[i];\n const firstValue = linePoints[segment.start][property];\n const lastValue = linePoints[segment.end][property];\n if (_isBetween(pointValue, firstValue, lastValue)) {\n first = pointValue === firstValue;\n last = pointValue === lastValue;\n break;\n }\n }\n return {first, last, point};\n}\n","import {TAU} from '../../helpers/index.js';\n\n// TODO: use elements.ArcElement instead\nexport class simpleArc {\n constructor(opts) {\n this.x = opts.x;\n this.y = opts.y;\n this.radius = opts.radius;\n }\n\n pathSegment(ctx, bounds, opts) {\n const {x, y, radius} = this;\n bounds = bounds || {start: 0, end: TAU};\n ctx.arc(x, y, radius, bounds.end, bounds.start, true);\n return !opts.bounds;\n }\n\n interpolate(point) {\n const {x, y, radius} = this;\n const angle = point.angle;\n return {\n x: x + Math.cos(angle) * radius,\n y: y + Math.sin(angle) * radius,\n angle\n };\n }\n}\n","import {isFinite} from '../../helpers/index.js';\nimport {_createBoundaryLine} from './filler.helper.js';\nimport {_getTargetPixel, _getTargetValue} from './filler.options.js';\nimport {_buildStackLine} from './filler.target.stack.js';\nimport {simpleArc} from './simpleArc.js';\n\n/**\n * @typedef { import('../../core/core.controller.js').default } Chart\n * @typedef { import('../../core/core.scale.js').default } Scale\n * @typedef { import('../../elements/element.point.js').default } PointElement\n */\n\nexport function _getTarget(source) {\n const {chart, fill, line} = source;\n\n if (isFinite(fill)) {\n return getLineByIndex(chart, fill);\n }\n\n if (fill === 'stack') {\n return _buildStackLine(source);\n }\n\n if (fill === 'shape') {\n return true;\n }\n\n const boundary = computeBoundary(source);\n\n if (boundary instanceof simpleArc) {\n return boundary;\n }\n\n return _createBoundaryLine(boundary, line);\n}\n\n/**\n * @param {Chart} chart\n * @param {number} index\n */\nfunction getLineByIndex(chart, index) {\n const meta = chart.getDatasetMeta(index);\n const visible = meta && chart.isDatasetVisible(index);\n return visible ? meta.dataset : null;\n}\n\nfunction computeBoundary(source) {\n const scale = source.scale || {};\n\n if (scale.getPointPositionForValue) {\n return computeCircularBoundary(source);\n }\n return computeLinearBoundary(source);\n}\n\n\nfunction computeLinearBoundary(source) {\n const {scale = {}, fill} = source;\n const pixel = _getTargetPixel(fill, scale);\n\n if (isFinite(pixel)) {\n const horizontal = scale.isHorizontal();\n\n return {\n x: horizontal ? pixel : null,\n y: horizontal ? null : pixel\n };\n }\n\n return null;\n}\n\nfunction computeCircularBoundary(source) {\n const {scale, fill} = source;\n const options = scale.options;\n const length = scale.getLabels().length;\n const start = options.reverse ? scale.max : scale.min;\n const value = _getTargetValue(fill, scale, start);\n const target = [];\n\n if (options.grid.circular) {\n const center = scale.getPointPositionForValue(0, start);\n return new simpleArc({\n x: center.x,\n y: center.y,\n radius: scale.getDistanceFromCenterForValue(value)\n });\n }\n\n for (let i = 0; i < length; ++i) {\n target.push(scale.getPointPositionForValue(i, value));\n }\n return target;\n}\n\n","import {clipArea, unclipArea} from '../../helpers/index.js';\nimport {_findSegmentEnd, _getBounds, _segments} from './filler.segment.js';\nimport {_getTarget} from './filler.target.js';\n\nexport function _drawfill(ctx, source, area) {\n const target = _getTarget(source);\n const {line, scale, axis} = source;\n const lineOpts = line.options;\n const fillOption = lineOpts.fill;\n const color = lineOpts.backgroundColor;\n const {above = color, below = color} = fillOption || {};\n if (target && line.points.length) {\n clipArea(ctx, area);\n doFill(ctx, {line, target, above, below, area, scale, axis});\n unclipArea(ctx);\n }\n}\n\nfunction doFill(ctx, cfg) {\n const {line, target, above, below, area, scale} = cfg;\n const property = line._loop ? 'angle' : cfg.axis;\n\n ctx.save();\n\n if (property === 'x' && below !== above) {\n clipVertical(ctx, target, area.top);\n fill(ctx, {line, target, color: above, scale, property});\n ctx.restore();\n ctx.save();\n clipVertical(ctx, target, area.bottom);\n }\n fill(ctx, {line, target, color: below, scale, property});\n\n ctx.restore();\n}\n\nfunction clipVertical(ctx, target, clipY) {\n const {segments, points} = target;\n let first = true;\n let lineLoop = false;\n\n ctx.beginPath();\n for (const segment of segments) {\n const {start, end} = segment;\n const firstPoint = points[start];\n const lastPoint = points[_findSegmentEnd(start, end, points)];\n if (first) {\n ctx.moveTo(firstPoint.x, firstPoint.y);\n first = false;\n } else {\n ctx.lineTo(firstPoint.x, clipY);\n ctx.lineTo(firstPoint.x, firstPoint.y);\n }\n lineLoop = !!target.pathSegment(ctx, segment, {move: lineLoop});\n if (lineLoop) {\n ctx.closePath();\n } else {\n ctx.lineTo(lastPoint.x, clipY);\n }\n }\n\n ctx.lineTo(target.first().x, clipY);\n ctx.closePath();\n ctx.clip();\n}\n\nfunction fill(ctx, cfg) {\n const {line, target, property, color, scale} = cfg;\n const segments = _segments(line, target, property);\n\n for (const {source: src, target: tgt, start, end} of segments) {\n const {style: {backgroundColor = color} = {}} = src;\n const notShape = target !== true;\n\n ctx.save();\n ctx.fillStyle = backgroundColor;\n\n clipBounds(ctx, scale, notShape && _getBounds(property, start, end));\n\n ctx.beginPath();\n\n const lineLoop = !!line.pathSegment(ctx, src);\n\n let loop;\n if (notShape) {\n if (lineLoop) {\n ctx.closePath();\n } else {\n interpolatedLineTo(ctx, target, end, property);\n }\n\n const targetLoop = !!target.pathSegment(ctx, tgt, {move: lineLoop, reverse: true});\n loop = lineLoop && targetLoop;\n if (!loop) {\n interpolatedLineTo(ctx, target, start, property);\n }\n }\n\n ctx.closePath();\n ctx.fill(loop ? 'evenodd' : 'nonzero');\n\n ctx.restore();\n }\n}\n\nfunction clipBounds(ctx, scale, bounds) {\n const {top, bottom} = scale.chart.chartArea;\n const {property, start, end} = bounds || {};\n if (property === 'x') {\n ctx.beginPath();\n ctx.rect(start, top, end - start, bottom - top);\n ctx.clip();\n }\n}\n\nfunction interpolatedLineTo(ctx, target, point, property) {\n const interpolatedPoint = target.interpolate(point, property);\n if (interpolatedPoint) {\n ctx.lineTo(interpolatedPoint.x, interpolatedPoint.y);\n }\n}\n\n","/**\n * Plugin based on discussion from the following Chart.js issues:\n * @see https://github.com/chartjs/Chart.js/issues/2380#issuecomment-279961569\n * @see https://github.com/chartjs/Chart.js/issues/2440#issuecomment-256461897\n */\n\nimport LineElement from '../../elements/element.line.js';\nimport {_drawfill} from './filler.drawing.js';\nimport {_shouldApplyFill} from './filler.helper.js';\nimport {_decodeFill, _resolveTarget} from './filler.options.js';\n\nexport default {\n id: 'filler',\n\n afterDatasetsUpdate(chart, _args, options) {\n const count = (chart.data.datasets || []).length;\n const sources = [];\n let meta, i, line, source;\n\n for (i = 0; i < count; ++i) {\n meta = chart.getDatasetMeta(i);\n line = meta.dataset;\n source = null;\n\n if (line && line.options && line instanceof LineElement) {\n source = {\n visible: chart.isDatasetVisible(i),\n index: i,\n fill: _decodeFill(line, i, count),\n chart,\n axis: meta.controller.options.indexAxis,\n scale: meta.vScale,\n line,\n };\n }\n\n meta.$filler = source;\n sources.push(source);\n }\n\n for (i = 0; i < count; ++i) {\n source = sources[i];\n if (!source || source.fill === false) {\n continue;\n }\n\n source.fill = _resolveTarget(sources, i, options.propagate);\n }\n },\n\n beforeDraw(chart, _args, options) {\n const draw = options.drawTime === 'beforeDraw';\n const metasets = chart.getSortedVisibleDatasetMetas();\n const area = chart.chartArea;\n for (let i = metasets.length - 1; i >= 0; --i) {\n const source = metasets[i].$filler;\n if (!source) {\n continue;\n }\n\n source.line.updateControlPoints(area, source.axis);\n if (draw && source.fill) {\n _drawfill(chart.ctx, source, area);\n }\n }\n },\n\n beforeDatasetsDraw(chart, _args, options) {\n if (options.drawTime !== 'beforeDatasetsDraw') {\n return;\n }\n\n const metasets = chart.getSortedVisibleDatasetMetas();\n for (let i = metasets.length - 1; i >= 0; --i) {\n const source = metasets[i].$filler;\n\n if (_shouldApplyFill(source)) {\n _drawfill(chart.ctx, source, chart.chartArea);\n }\n }\n },\n\n beforeDatasetDraw(chart, args, options) {\n const source = args.meta.$filler;\n\n if (!_shouldApplyFill(source) || options.drawTime !== 'beforeDatasetDraw') {\n return;\n }\n\n _drawfill(chart.ctx, source, chart.chartArea);\n },\n\n defaults: {\n propagate: true,\n drawTime: 'beforeDatasetDraw'\n }\n};\n","import defaults from '../core/core.defaults.js';\nimport Element from '../core/core.element.js';\nimport layouts from '../core/core.layouts.js';\nimport {addRoundedRectPath, drawPointLegend, renderText} from '../helpers/helpers.canvas.js';\nimport {\n _isBetween,\n callback as call,\n clipArea,\n getRtlAdapter,\n overrideTextDirection,\n restoreTextDirection,\n toFont,\n toPadding,\n unclipArea,\n valueOrDefault,\n} from '../helpers/index.js';\nimport {_alignStartEnd, _textX, _toLeftRightCenter} from '../helpers/helpers.extras.js';\nimport {toTRBLCorners} from '../helpers/helpers.options.js';\n\n/**\n * @typedef { import('../types/index.js').ChartEvent } ChartEvent\n */\n\nconst getBoxSize = (labelOpts, fontSize) => {\n let {boxHeight = fontSize, boxWidth = fontSize} = labelOpts;\n\n if (labelOpts.usePointStyle) {\n boxHeight = Math.min(boxHeight, fontSize);\n boxWidth = labelOpts.pointStyleWidth || Math.min(boxWidth, fontSize);\n }\n\n return {\n boxWidth,\n boxHeight,\n itemHeight: Math.max(fontSize, boxHeight)\n };\n};\n\nconst itemsEqual = (a, b) => a !== null && b !== null && a.datasetIndex === b.datasetIndex && a.index === b.index;\n\nexport class Legend extends Element {\n\n /**\n\t * @param {{ ctx: any; options: any; chart: any; }} config\n\t */\n constructor(config) {\n super();\n\n this._added = false;\n\n // Contains hit boxes for each dataset (in dataset order)\n this.legendHitBoxes = [];\n\n /**\n \t\t * @private\n \t\t */\n this._hoveredItem = null;\n\n // Are we in doughnut mode which has a different data type\n this.doughnutMode = false;\n\n this.chart = config.chart;\n this.options = config.options;\n this.ctx = config.ctx;\n this.legendItems = undefined;\n this.columnSizes = undefined;\n this.lineWidths = undefined;\n this.maxHeight = undefined;\n this.maxWidth = undefined;\n this.top = undefined;\n this.bottom = undefined;\n this.left = undefined;\n this.right = undefined;\n this.height = undefined;\n this.width = undefined;\n this._margins = undefined;\n this.position = undefined;\n this.weight = undefined;\n this.fullSize = undefined;\n }\n\n update(maxWidth, maxHeight, margins) {\n this.maxWidth = maxWidth;\n this.maxHeight = maxHeight;\n this._margins = margins;\n\n this.setDimensions();\n this.buildLabels();\n this.fit();\n }\n\n setDimensions() {\n if (this.isHorizontal()) {\n this.width = this.maxWidth;\n this.left = this._margins.left;\n this.right = this.width;\n } else {\n this.height = this.maxHeight;\n this.top = this._margins.top;\n this.bottom = this.height;\n }\n }\n\n buildLabels() {\n const labelOpts = this.options.labels || {};\n let legendItems = call(labelOpts.generateLabels, [this.chart], this) || [];\n\n if (labelOpts.filter) {\n legendItems = legendItems.filter((item) => labelOpts.filter(item, this.chart.data));\n }\n\n if (labelOpts.sort) {\n legendItems = legendItems.sort((a, b) => labelOpts.sort(a, b, this.chart.data));\n }\n\n if (this.options.reverse) {\n legendItems.reverse();\n }\n\n this.legendItems = legendItems;\n }\n\n fit() {\n const {options, ctx} = this;\n\n // The legend may not be displayed for a variety of reasons including\n // the fact that the defaults got set to `false`.\n // When the legend is not displayed, there are no guarantees that the options\n // are correctly formatted so we need to bail out as early as possible.\n if (!options.display) {\n this.width = this.height = 0;\n return;\n }\n\n const labelOpts = options.labels;\n const labelFont = toFont(labelOpts.font);\n const fontSize = labelFont.size;\n const titleHeight = this._computeTitleHeight();\n const {boxWidth, itemHeight} = getBoxSize(labelOpts, fontSize);\n\n let width, height;\n\n ctx.font = labelFont.string;\n\n if (this.isHorizontal()) {\n width = this.maxWidth; // fill all the width\n height = this._fitRows(titleHeight, fontSize, boxWidth, itemHeight) + 10;\n } else {\n height = this.maxHeight; // fill all the height\n width = this._fitCols(titleHeight, labelFont, boxWidth, itemHeight) + 10;\n }\n\n this.width = Math.min(width, options.maxWidth || this.maxWidth);\n this.height = Math.min(height, options.maxHeight || this.maxHeight);\n }\n\n /**\n\t * @private\n\t */\n _fitRows(titleHeight, fontSize, boxWidth, itemHeight) {\n const {ctx, maxWidth, options: {labels: {padding}}} = this;\n const hitboxes = this.legendHitBoxes = [];\n // Width of each line of legend boxes. Labels wrap onto multiple lines when there are too many to fit on one\n const lineWidths = this.lineWidths = [0];\n const lineHeight = itemHeight + padding;\n let totalHeight = titleHeight;\n\n ctx.textAlign = 'left';\n ctx.textBaseline = 'middle';\n\n let row = -1;\n let top = -lineHeight;\n this.legendItems.forEach((legendItem, i) => {\n const itemWidth = boxWidth + (fontSize / 2) + ctx.measureText(legendItem.text).width;\n\n if (i === 0 || lineWidths[lineWidths.length - 1] + itemWidth + 2 * padding > maxWidth) {\n totalHeight += lineHeight;\n lineWidths[lineWidths.length - (i > 0 ? 0 : 1)] = 0;\n top += lineHeight;\n row++;\n }\n\n hitboxes[i] = {left: 0, top, row, width: itemWidth, height: itemHeight};\n\n lineWidths[lineWidths.length - 1] += itemWidth + padding;\n });\n\n return totalHeight;\n }\n\n _fitCols(titleHeight, labelFont, boxWidth, _itemHeight) {\n const {ctx, maxHeight, options: {labels: {padding}}} = this;\n const hitboxes = this.legendHitBoxes = [];\n const columnSizes = this.columnSizes = [];\n const heightLimit = maxHeight - titleHeight;\n\n let totalWidth = padding;\n let currentColWidth = 0;\n let currentColHeight = 0;\n\n let left = 0;\n let col = 0;\n\n this.legendItems.forEach((legendItem, i) => {\n const {itemWidth, itemHeight} = calculateItemSize(boxWidth, labelFont, ctx, legendItem, _itemHeight);\n\n // If too tall, go to new column\n if (i > 0 && currentColHeight + itemHeight + 2 * padding > heightLimit) {\n totalWidth += currentColWidth + padding;\n columnSizes.push({width: currentColWidth, height: currentColHeight}); // previous column size\n left += currentColWidth + padding;\n col++;\n currentColWidth = currentColHeight = 0;\n }\n\n // Store the hitbox width and height here. Final position will be updated in `draw`\n hitboxes[i] = {left, top: currentColHeight, col, width: itemWidth, height: itemHeight};\n\n // Get max width\n currentColWidth = Math.max(currentColWidth, itemWidth);\n currentColHeight += itemHeight + padding;\n });\n\n totalWidth += currentColWidth;\n columnSizes.push({width: currentColWidth, height: currentColHeight}); // previous column size\n\n return totalWidth;\n }\n\n adjustHitBoxes() {\n if (!this.options.display) {\n return;\n }\n const titleHeight = this._computeTitleHeight();\n const {legendHitBoxes: hitboxes, options: {align, labels: {padding}, rtl}} = this;\n const rtlHelper = getRtlAdapter(rtl, this.left, this.width);\n if (this.isHorizontal()) {\n let row = 0;\n let left = _alignStartEnd(align, this.left + padding, this.right - this.lineWidths[row]);\n for (const hitbox of hitboxes) {\n if (row !== hitbox.row) {\n row = hitbox.row;\n left = _alignStartEnd(align, this.left + padding, this.right - this.lineWidths[row]);\n }\n hitbox.top += this.top + titleHeight + padding;\n hitbox.left = rtlHelper.leftForLtr(rtlHelper.x(left), hitbox.width);\n left += hitbox.width + padding;\n }\n } else {\n let col = 0;\n let top = _alignStartEnd(align, this.top + titleHeight + padding, this.bottom - this.columnSizes[col].height);\n for (const hitbox of hitboxes) {\n if (hitbox.col !== col) {\n col = hitbox.col;\n top = _alignStartEnd(align, this.top + titleHeight + padding, this.bottom - this.columnSizes[col].height);\n }\n hitbox.top = top;\n hitbox.left += this.left + padding;\n hitbox.left = rtlHelper.leftForLtr(rtlHelper.x(hitbox.left), hitbox.width);\n top += hitbox.height + padding;\n }\n }\n }\n\n isHorizontal() {\n return this.options.position === 'top' || this.options.position === 'bottom';\n }\n\n draw() {\n if (this.options.display) {\n const ctx = this.ctx;\n clipArea(ctx, this);\n\n this._draw();\n\n unclipArea(ctx);\n }\n }\n\n /**\n\t * @private\n\t */\n _draw() {\n const {options: opts, columnSizes, lineWidths, ctx} = this;\n const {align, labels: labelOpts} = opts;\n const defaultColor = defaults.color;\n const rtlHelper = getRtlAdapter(opts.rtl, this.left, this.width);\n const labelFont = toFont(labelOpts.font);\n const {padding} = labelOpts;\n const fontSize = labelFont.size;\n const halfFontSize = fontSize / 2;\n let cursor;\n\n this.drawTitle();\n\n // Canvas setup\n ctx.textAlign = rtlHelper.textAlign('left');\n ctx.textBaseline = 'middle';\n ctx.lineWidth = 0.5;\n ctx.font = labelFont.string;\n\n const {boxWidth, boxHeight, itemHeight} = getBoxSize(labelOpts, fontSize);\n\n // current position\n const drawLegendBox = function(x, y, legendItem) {\n if (isNaN(boxWidth) || boxWidth <= 0 || isNaN(boxHeight) || boxHeight < 0) {\n return;\n }\n\n // Set the ctx for the box\n ctx.save();\n\n const lineWidth = valueOrDefault(legendItem.lineWidth, 1);\n ctx.fillStyle = valueOrDefault(legendItem.fillStyle, defaultColor);\n ctx.lineCap = valueOrDefault(legendItem.lineCap, 'butt');\n ctx.lineDashOffset = valueOrDefault(legendItem.lineDashOffset, 0);\n ctx.lineJoin = valueOrDefault(legendItem.lineJoin, 'miter');\n ctx.lineWidth = lineWidth;\n ctx.strokeStyle = valueOrDefault(legendItem.strokeStyle, defaultColor);\n\n ctx.setLineDash(valueOrDefault(legendItem.lineDash, []));\n\n if (labelOpts.usePointStyle) {\n // Recalculate x and y for drawPoint() because its expecting\n // x and y to be center of figure (instead of top left)\n const drawOptions = {\n radius: boxHeight * Math.SQRT2 / 2,\n pointStyle: legendItem.pointStyle,\n rotation: legendItem.rotation,\n borderWidth: lineWidth\n };\n const centerX = rtlHelper.xPlus(x, boxWidth / 2);\n const centerY = y + halfFontSize;\n\n // Draw pointStyle as legend symbol\n drawPointLegend(ctx, drawOptions, centerX, centerY, labelOpts.pointStyleWidth && boxWidth);\n } else {\n // Draw box as legend symbol\n // Adjust position when boxHeight < fontSize (want it centered)\n const yBoxTop = y + Math.max((fontSize - boxHeight) / 2, 0);\n const xBoxLeft = rtlHelper.leftForLtr(x, boxWidth);\n const borderRadius = toTRBLCorners(legendItem.borderRadius);\n\n ctx.beginPath();\n\n if (Object.values(borderRadius).some(v => v !== 0)) {\n addRoundedRectPath(ctx, {\n x: xBoxLeft,\n y: yBoxTop,\n w: boxWidth,\n h: boxHeight,\n radius: borderRadius,\n });\n } else {\n ctx.rect(xBoxLeft, yBoxTop, boxWidth, boxHeight);\n }\n\n ctx.fill();\n if (lineWidth !== 0) {\n ctx.stroke();\n }\n }\n\n ctx.restore();\n };\n\n const fillText = function(x, y, legendItem) {\n renderText(ctx, legendItem.text, x, y + (itemHeight / 2), labelFont, {\n strikethrough: legendItem.hidden,\n textAlign: rtlHelper.textAlign(legendItem.textAlign)\n });\n };\n\n // Horizontal\n const isHorizontal = this.isHorizontal();\n const titleHeight = this._computeTitleHeight();\n if (isHorizontal) {\n cursor = {\n x: _alignStartEnd(align, this.left + padding, this.right - lineWidths[0]),\n y: this.top + padding + titleHeight,\n line: 0\n };\n } else {\n cursor = {\n x: this.left + padding,\n y: _alignStartEnd(align, this.top + titleHeight + padding, this.bottom - columnSizes[0].height),\n line: 0\n };\n }\n\n overrideTextDirection(this.ctx, opts.textDirection);\n\n const lineHeight = itemHeight + padding;\n this.legendItems.forEach((legendItem, i) => {\n ctx.strokeStyle = legendItem.fontColor; // for strikethrough effect\n ctx.fillStyle = legendItem.fontColor; // render in correct colour\n\n const textWidth = ctx.measureText(legendItem.text).width;\n const textAlign = rtlHelper.textAlign(legendItem.textAlign || (legendItem.textAlign = labelOpts.textAlign));\n const width = boxWidth + halfFontSize + textWidth;\n let x = cursor.x;\n let y = cursor.y;\n\n rtlHelper.setWidth(this.width);\n\n if (isHorizontal) {\n if (i > 0 && x + width + padding > this.right) {\n y = cursor.y += lineHeight;\n cursor.line++;\n x = cursor.x = _alignStartEnd(align, this.left + padding, this.right - lineWidths[cursor.line]);\n }\n } else if (i > 0 && y + lineHeight > this.bottom) {\n x = cursor.x = x + columnSizes[cursor.line].width + padding;\n cursor.line++;\n y = cursor.y = _alignStartEnd(align, this.top + titleHeight + padding, this.bottom - columnSizes[cursor.line].height);\n }\n\n const realX = rtlHelper.x(x);\n\n drawLegendBox(realX, y, legendItem);\n\n x = _textX(textAlign, x + boxWidth + halfFontSize, isHorizontal ? x + width : this.right, opts.rtl);\n\n // Fill the actual label\n fillText(rtlHelper.x(x), y, legendItem);\n\n if (isHorizontal) {\n cursor.x += width + padding;\n } else if (typeof legendItem.text !== 'string') {\n const fontLineHeight = labelFont.lineHeight;\n cursor.y += calculateLegendItemHeight(legendItem, fontLineHeight) + padding;\n } else {\n cursor.y += lineHeight;\n }\n });\n\n restoreTextDirection(this.ctx, opts.textDirection);\n }\n\n /**\n\t * @protected\n\t */\n drawTitle() {\n const opts = this.options;\n const titleOpts = opts.title;\n const titleFont = toFont(titleOpts.font);\n const titlePadding = toPadding(titleOpts.padding);\n\n if (!titleOpts.display) {\n return;\n }\n\n const rtlHelper = getRtlAdapter(opts.rtl, this.left, this.width);\n const ctx = this.ctx;\n const position = titleOpts.position;\n const halfFontSize = titleFont.size / 2;\n const topPaddingPlusHalfFontSize = titlePadding.top + halfFontSize;\n let y;\n\n // These defaults are used when the legend is vertical.\n // When horizontal, they are computed below.\n let left = this.left;\n let maxWidth = this.width;\n\n if (this.isHorizontal()) {\n // Move left / right so that the title is above the legend lines\n maxWidth = Math.max(...this.lineWidths);\n y = this.top + topPaddingPlusHalfFontSize;\n left = _alignStartEnd(opts.align, left, this.right - maxWidth);\n } else {\n // Move down so that the title is above the legend stack in every alignment\n const maxHeight = this.columnSizes.reduce((acc, size) => Math.max(acc, size.height), 0);\n y = topPaddingPlusHalfFontSize + _alignStartEnd(opts.align, this.top, this.bottom - maxHeight - opts.labels.padding - this._computeTitleHeight());\n }\n\n // Now that we know the left edge of the inner legend box, compute the correct\n // X coordinate from the title alignment\n const x = _alignStartEnd(position, left, left + maxWidth);\n\n // Canvas setup\n ctx.textAlign = rtlHelper.textAlign(_toLeftRightCenter(position));\n ctx.textBaseline = 'middle';\n ctx.strokeStyle = titleOpts.color;\n ctx.fillStyle = titleOpts.color;\n ctx.font = titleFont.string;\n\n renderText(ctx, titleOpts.text, x, y, titleFont);\n }\n\n /**\n\t * @private\n\t */\n _computeTitleHeight() {\n const titleOpts = this.options.title;\n const titleFont = toFont(titleOpts.font);\n const titlePadding = toPadding(titleOpts.padding);\n return titleOpts.display ? titleFont.lineHeight + titlePadding.height : 0;\n }\n\n /**\n\t * @private\n\t */\n _getLegendItemAt(x, y) {\n let i, hitBox, lh;\n\n if (_isBetween(x, this.left, this.right)\n && _isBetween(y, this.top, this.bottom)) {\n // See if we are touching one of the dataset boxes\n lh = this.legendHitBoxes;\n for (i = 0; i < lh.length; ++i) {\n hitBox = lh[i];\n\n if (_isBetween(x, hitBox.left, hitBox.left + hitBox.width)\n && _isBetween(y, hitBox.top, hitBox.top + hitBox.height)) {\n // Touching an element\n return this.legendItems[i];\n }\n }\n }\n\n return null;\n }\n\n /**\n\t * Handle an event\n\t * @param {ChartEvent} e - The event to handle\n\t */\n handleEvent(e) {\n const opts = this.options;\n if (!isListened(e.type, opts)) {\n return;\n }\n\n // Chart event already has relative position in it\n const hoveredItem = this._getLegendItemAt(e.x, e.y);\n\n if (e.type === 'mousemove' || e.type === 'mouseout') {\n const previous = this._hoveredItem;\n const sameItem = itemsEqual(previous, hoveredItem);\n if (previous && !sameItem) {\n call(opts.onLeave, [e, previous, this], this);\n }\n\n this._hoveredItem = hoveredItem;\n\n if (hoveredItem && !sameItem) {\n call(opts.onHover, [e, hoveredItem, this], this);\n }\n } else if (hoveredItem) {\n call(opts.onClick, [e, hoveredItem, this], this);\n }\n }\n}\n\nfunction calculateItemSize(boxWidth, labelFont, ctx, legendItem, _itemHeight) {\n const itemWidth = calculateItemWidth(legendItem, boxWidth, labelFont, ctx);\n const itemHeight = calculateItemHeight(_itemHeight, legendItem, labelFont.lineHeight);\n return {itemWidth, itemHeight};\n}\n\nfunction calculateItemWidth(legendItem, boxWidth, labelFont, ctx) {\n let legendItemText = legendItem.text;\n if (legendItemText && typeof legendItemText !== 'string') {\n legendItemText = legendItemText.reduce((a, b) => a.length > b.length ? a : b);\n }\n return boxWidth + (labelFont.size / 2) + ctx.measureText(legendItemText).width;\n}\n\nfunction calculateItemHeight(_itemHeight, legendItem, fontLineHeight) {\n let itemHeight = _itemHeight;\n if (typeof legendItem.text !== 'string') {\n itemHeight = calculateLegendItemHeight(legendItem, fontLineHeight);\n }\n return itemHeight;\n}\n\nfunction calculateLegendItemHeight(legendItem, fontLineHeight) {\n const labelHeight = legendItem.text ? legendItem.text.length : 0;\n return fontLineHeight * labelHeight;\n}\n\nfunction isListened(type, opts) {\n if ((type === 'mousemove' || type === 'mouseout') && (opts.onHover || opts.onLeave)) {\n return true;\n }\n if (opts.onClick && (type === 'click' || type === 'mouseup')) {\n return true;\n }\n return false;\n}\n\nexport default {\n id: 'legend',\n\n /**\n\t * For tests\n\t * @private\n\t */\n _element: Legend,\n\n start(chart, _args, options) {\n const legend = chart.legend = new Legend({ctx: chart.ctx, options, chart});\n layouts.configure(chart, legend, options);\n layouts.addBox(chart, legend);\n },\n\n stop(chart) {\n layouts.removeBox(chart, chart.legend);\n delete chart.legend;\n },\n\n // During the beforeUpdate step, the layout configuration needs to run\n // This ensures that if the legend position changes (via an option update)\n // the layout system respects the change. See https://github.com/chartjs/Chart.js/issues/7527\n beforeUpdate(chart, _args, options) {\n const legend = chart.legend;\n layouts.configure(chart, legend, options);\n legend.options = options;\n },\n\n // The labels need to be built after datasets are updated to ensure that colors\n // and other styling are correct. See https://github.com/chartjs/Chart.js/issues/6968\n afterUpdate(chart) {\n const legend = chart.legend;\n legend.buildLabels();\n legend.adjustHitBoxes();\n },\n\n\n afterEvent(chart, args) {\n if (!args.replay) {\n chart.legend.handleEvent(args.event);\n }\n },\n\n defaults: {\n display: true,\n position: 'top',\n align: 'center',\n fullSize: true,\n reverse: false,\n weight: 1000,\n\n // a callback that will handle\n onClick(e, legendItem, legend) {\n const index = legendItem.datasetIndex;\n const ci = legend.chart;\n if (ci.isDatasetVisible(index)) {\n ci.hide(index);\n legendItem.hidden = true;\n } else {\n ci.show(index);\n legendItem.hidden = false;\n }\n },\n\n onHover: null,\n onLeave: null,\n\n labels: {\n color: (ctx) => ctx.chart.options.color,\n boxWidth: 40,\n padding: 10,\n // Generates labels shown in the legend\n // Valid properties to return:\n // text : text to display\n // fillStyle : fill of coloured box\n // strokeStyle: stroke of coloured box\n // hidden : if this legend item refers to a hidden item\n // lineCap : cap style for line\n // lineDash\n // lineDashOffset :\n // lineJoin :\n // lineWidth :\n generateLabels(chart) {\n const datasets = chart.data.datasets;\n const {labels: {usePointStyle, pointStyle, textAlign, color, useBorderRadius, borderRadius}} = chart.legend.options;\n\n return chart._getSortedDatasetMetas().map((meta) => {\n const style = meta.controller.getStyle(usePointStyle ? 0 : undefined);\n const borderWidth = toPadding(style.borderWidth);\n\n return {\n text: datasets[meta.index].label,\n fillStyle: style.backgroundColor,\n fontColor: color,\n hidden: !meta.visible,\n lineCap: style.borderCapStyle,\n lineDash: style.borderDash,\n lineDashOffset: style.borderDashOffset,\n lineJoin: style.borderJoinStyle,\n lineWidth: (borderWidth.width + borderWidth.height) / 4,\n strokeStyle: style.borderColor,\n pointStyle: pointStyle || style.pointStyle,\n rotation: style.rotation,\n textAlign: textAlign || style.textAlign,\n borderRadius: useBorderRadius && (borderRadius || style.borderRadius),\n\n // Below is extra data used for toggling the datasets\n datasetIndex: meta.index\n };\n }, this);\n }\n },\n\n title: {\n color: (ctx) => ctx.chart.options.color,\n display: false,\n position: 'center',\n text: '',\n }\n },\n\n descriptors: {\n _scriptable: (name) => !name.startsWith('on'),\n labels: {\n _scriptable: (name) => !['generateLabels', 'filter', 'sort'].includes(name),\n }\n },\n};\n","import Element from '../core/core.element.js';\nimport layouts from '../core/core.layouts.js';\nimport {PI, isArray, toPadding, toFont} from '../helpers/index.js';\nimport {_toLeftRightCenter, _alignStartEnd} from '../helpers/helpers.extras.js';\nimport {renderText} from '../helpers/helpers.canvas.js';\n\nexport class Title extends Element {\n /**\n\t * @param {{ ctx: any; options: any; chart: any; }} config\n\t */\n constructor(config) {\n super();\n\n this.chart = config.chart;\n this.options = config.options;\n this.ctx = config.ctx;\n this._padding = undefined;\n this.top = undefined;\n this.bottom = undefined;\n this.left = undefined;\n this.right = undefined;\n this.width = undefined;\n this.height = undefined;\n this.position = undefined;\n this.weight = undefined;\n this.fullSize = undefined;\n }\n\n update(maxWidth, maxHeight) {\n const opts = this.options;\n\n this.left = 0;\n this.top = 0;\n\n if (!opts.display) {\n this.width = this.height = this.right = this.bottom = 0;\n return;\n }\n\n this.width = this.right = maxWidth;\n this.height = this.bottom = maxHeight;\n\n const lineCount = isArray(opts.text) ? opts.text.length : 1;\n this._padding = toPadding(opts.padding);\n const textSize = lineCount * toFont(opts.font).lineHeight + this._padding.height;\n\n if (this.isHorizontal()) {\n this.height = textSize;\n } else {\n this.width = textSize;\n }\n }\n\n isHorizontal() {\n const pos = this.options.position;\n return pos === 'top' || pos === 'bottom';\n }\n\n _drawArgs(offset) {\n const {top, left, bottom, right, options} = this;\n const align = options.align;\n let rotation = 0;\n let maxWidth, titleX, titleY;\n\n if (this.isHorizontal()) {\n titleX = _alignStartEnd(align, left, right);\n titleY = top + offset;\n maxWidth = right - left;\n } else {\n if (options.position === 'left') {\n titleX = left + offset;\n titleY = _alignStartEnd(align, bottom, top);\n rotation = PI * -0.5;\n } else {\n titleX = right - offset;\n titleY = _alignStartEnd(align, top, bottom);\n rotation = PI * 0.5;\n }\n maxWidth = bottom - top;\n }\n return {titleX, titleY, maxWidth, rotation};\n }\n\n draw() {\n const ctx = this.ctx;\n const opts = this.options;\n\n if (!opts.display) {\n return;\n }\n\n const fontOpts = toFont(opts.font);\n const lineHeight = fontOpts.lineHeight;\n const offset = lineHeight / 2 + this._padding.top;\n const {titleX, titleY, maxWidth, rotation} = this._drawArgs(offset);\n\n renderText(ctx, opts.text, 0, 0, fontOpts, {\n color: opts.color,\n maxWidth,\n rotation,\n textAlign: _toLeftRightCenter(opts.align),\n textBaseline: 'middle',\n translation: [titleX, titleY],\n });\n }\n}\n\nfunction createTitle(chart, titleOpts) {\n const title = new Title({\n ctx: chart.ctx,\n options: titleOpts,\n chart\n });\n\n layouts.configure(chart, title, titleOpts);\n layouts.addBox(chart, title);\n chart.titleBlock = title;\n}\n\nexport default {\n id: 'title',\n\n /**\n\t * For tests\n\t * @private\n\t */\n _element: Title,\n\n start(chart, _args, options) {\n createTitle(chart, options);\n },\n\n stop(chart) {\n const titleBlock = chart.titleBlock;\n layouts.removeBox(chart, titleBlock);\n delete chart.titleBlock;\n },\n\n beforeUpdate(chart, _args, options) {\n const title = chart.titleBlock;\n layouts.configure(chart, title, options);\n title.options = options;\n },\n\n defaults: {\n align: 'center',\n display: false,\n font: {\n weight: 'bold',\n },\n fullSize: true,\n padding: 10,\n position: 'top',\n text: '',\n weight: 2000 // by default greater than legend (1000) to be above\n },\n\n defaultRoutes: {\n color: 'color'\n },\n\n descriptors: {\n _scriptable: true,\n _indexable: false,\n },\n};\n","import {Title} from './plugin.title.js';\nimport layouts from '../core/core.layouts.js';\n\nconst map = new WeakMap();\n\nexport default {\n id: 'subtitle',\n\n start(chart, _args, options) {\n const title = new Title({\n ctx: chart.ctx,\n options,\n chart\n });\n\n layouts.configure(chart, title, options);\n layouts.addBox(chart, title);\n map.set(chart, title);\n },\n\n stop(chart) {\n layouts.removeBox(chart, map.get(chart));\n map.delete(chart);\n },\n\n beforeUpdate(chart, _args, options) {\n const title = map.get(chart);\n layouts.configure(chart, title, options);\n title.options = options;\n },\n\n defaults: {\n align: 'center',\n display: false,\n font: {\n weight: 'normal',\n },\n fullSize: true,\n padding: 0,\n position: 'top',\n text: '',\n weight: 1500 // by default greater than legend (1000) and smaller than title (2000)\n },\n\n defaultRoutes: {\n color: 'color'\n },\n\n descriptors: {\n _scriptable: true,\n _indexable: false,\n },\n};\n","import Animations from '../core/core.animations.js';\nimport Element from '../core/core.element.js';\nimport {addRoundedRectPath} from '../helpers/helpers.canvas.js';\nimport {each, noop, isNullOrUndef, isArray, _elementsEqual, isObject} from '../helpers/helpers.core.js';\nimport {toFont, toPadding, toTRBLCorners} from '../helpers/helpers.options.js';\nimport {getRtlAdapter, overrideTextDirection, restoreTextDirection} from '../helpers/helpers.rtl.js';\nimport {distanceBetweenPoints, _limitValue} from '../helpers/helpers.math.js';\nimport {createContext, drawPoint} from '../helpers/index.js';\n\n/**\n * @typedef { import('../platform/platform.base.js').Chart } Chart\n * @typedef { import('../types/index.js').ChartEvent } ChartEvent\n * @typedef { import('../types/index.js').ActiveElement } ActiveElement\n * @typedef { import('../core/core.interaction.js').InteractionItem } InteractionItem\n */\n\nconst positioners = {\n /**\n\t * Average mode places the tooltip at the average position of the elements shown\n\t */\n average(items) {\n if (!items.length) {\n return false;\n }\n\n let i, len;\n let x = 0;\n let y = 0;\n let count = 0;\n\n for (i = 0, len = items.length; i < len; ++i) {\n const el = items[i].element;\n if (el && el.hasValue()) {\n const pos = el.tooltipPosition();\n x += pos.x;\n y += pos.y;\n ++count;\n }\n }\n\n return {\n x: x / count,\n y: y / count\n };\n },\n\n /**\n\t * Gets the tooltip position nearest of the item nearest to the event position\n\t */\n nearest(items, eventPosition) {\n if (!items.length) {\n return false;\n }\n\n let x = eventPosition.x;\n let y = eventPosition.y;\n let minDistance = Number.POSITIVE_INFINITY;\n let i, len, nearestElement;\n\n for (i = 0, len = items.length; i < len; ++i) {\n const el = items[i].element;\n if (el && el.hasValue()) {\n const center = el.getCenterPoint();\n const d = distanceBetweenPoints(eventPosition, center);\n\n if (d < minDistance) {\n minDistance = d;\n nearestElement = el;\n }\n }\n }\n\n if (nearestElement) {\n const tp = nearestElement.tooltipPosition();\n x = tp.x;\n y = tp.y;\n }\n\n return {\n x,\n y\n };\n }\n};\n\n// Helper to push or concat based on if the 2nd parameter is an array or not\nfunction pushOrConcat(base, toPush) {\n if (toPush) {\n if (isArray(toPush)) {\n // base = base.concat(toPush);\n Array.prototype.push.apply(base, toPush);\n } else {\n base.push(toPush);\n }\n }\n\n return base;\n}\n\n/**\n * Returns array of strings split by newline\n * @param {*} str - The value to split by newline.\n * @returns {string|string[]} value if newline present - Returned from String split() method\n * @function\n */\nfunction splitNewlines(str) {\n if ((typeof str === 'string' || str instanceof String) && str.indexOf('\\n') > -1) {\n return str.split('\\n');\n }\n return str;\n}\n\n\n/**\n * Private helper to create a tooltip item model\n * @param {Chart} chart\n * @param {ActiveElement} item - {element, index, datasetIndex} to create the tooltip item for\n * @return new tooltip item\n */\nfunction createTooltipItem(chart, item) {\n const {element, datasetIndex, index} = item;\n const controller = chart.getDatasetMeta(datasetIndex).controller;\n const {label, value} = controller.getLabelAndValue(index);\n\n return {\n chart,\n label,\n parsed: controller.getParsed(index),\n raw: chart.data.datasets[datasetIndex].data[index],\n formattedValue: value,\n dataset: controller.getDataset(),\n dataIndex: index,\n datasetIndex,\n element\n };\n}\n\n/**\n * Get the size of the tooltip\n */\nfunction getTooltipSize(tooltip, options) {\n const ctx = tooltip.chart.ctx;\n const {body, footer, title} = tooltip;\n const {boxWidth, boxHeight} = options;\n const bodyFont = toFont(options.bodyFont);\n const titleFont = toFont(options.titleFont);\n const footerFont = toFont(options.footerFont);\n const titleLineCount = title.length;\n const footerLineCount = footer.length;\n const bodyLineItemCount = body.length;\n\n const padding = toPadding(options.padding);\n let height = padding.height;\n let width = 0;\n\n // Count of all lines in the body\n let combinedBodyLength = body.reduce((count, bodyItem) => count + bodyItem.before.length + bodyItem.lines.length + bodyItem.after.length, 0);\n combinedBodyLength += tooltip.beforeBody.length + tooltip.afterBody.length;\n\n if (titleLineCount) {\n height += titleLineCount * titleFont.lineHeight\n\t\t\t+ (titleLineCount - 1) * options.titleSpacing\n\t\t\t+ options.titleMarginBottom;\n }\n if (combinedBodyLength) {\n // Body lines may include some extra height depending on boxHeight\n const bodyLineHeight = options.displayColors ? Math.max(boxHeight, bodyFont.lineHeight) : bodyFont.lineHeight;\n height += bodyLineItemCount * bodyLineHeight\n\t\t\t+ (combinedBodyLength - bodyLineItemCount) * bodyFont.lineHeight\n\t\t\t+ (combinedBodyLength - 1) * options.bodySpacing;\n }\n if (footerLineCount) {\n height += options.footerMarginTop\n\t\t\t+ footerLineCount * footerFont.lineHeight\n\t\t\t+ (footerLineCount - 1) * options.footerSpacing;\n }\n\n // Title width\n let widthPadding = 0;\n const maxLineWidth = function(line) {\n width = Math.max(width, ctx.measureText(line).width + widthPadding);\n };\n\n ctx.save();\n\n ctx.font = titleFont.string;\n each(tooltip.title, maxLineWidth);\n\n // Body width\n ctx.font = bodyFont.string;\n each(tooltip.beforeBody.concat(tooltip.afterBody), maxLineWidth);\n\n // Body lines may include some extra width due to the color box\n widthPadding = options.displayColors ? (boxWidth + 2 + options.boxPadding) : 0;\n each(body, (bodyItem) => {\n each(bodyItem.before, maxLineWidth);\n each(bodyItem.lines, maxLineWidth);\n each(bodyItem.after, maxLineWidth);\n });\n\n // Reset back to 0\n widthPadding = 0;\n\n // Footer width\n ctx.font = footerFont.string;\n each(tooltip.footer, maxLineWidth);\n\n ctx.restore();\n\n // Add padding\n width += padding.width;\n\n return {width, height};\n}\n\nfunction determineYAlign(chart, size) {\n const {y, height} = size;\n\n if (y < height / 2) {\n return 'top';\n } else if (y > (chart.height - height / 2)) {\n return 'bottom';\n }\n return 'center';\n}\n\nfunction doesNotFitWithAlign(xAlign, chart, options, size) {\n const {x, width} = size;\n const caret = options.caretSize + options.caretPadding;\n if (xAlign === 'left' && x + width + caret > chart.width) {\n return true;\n }\n\n if (xAlign === 'right' && x - width - caret < 0) {\n return true;\n }\n}\n\nfunction determineXAlign(chart, options, size, yAlign) {\n const {x, width} = size;\n const {width: chartWidth, chartArea: {left, right}} = chart;\n let xAlign = 'center';\n\n if (yAlign === 'center') {\n xAlign = x <= (left + right) / 2 ? 'left' : 'right';\n } else if (x <= width / 2) {\n xAlign = 'left';\n } else if (x >= chartWidth - width / 2) {\n xAlign = 'right';\n }\n\n if (doesNotFitWithAlign(xAlign, chart, options, size)) {\n xAlign = 'center';\n }\n\n return xAlign;\n}\n\n/**\n * Helper to get the alignment of a tooltip given the size\n */\nfunction determineAlignment(chart, options, size) {\n const yAlign = size.yAlign || options.yAlign || determineYAlign(chart, size);\n\n return {\n xAlign: size.xAlign || options.xAlign || determineXAlign(chart, options, size, yAlign),\n yAlign\n };\n}\n\nfunction alignX(size, xAlign) {\n let {x, width} = size;\n if (xAlign === 'right') {\n x -= width;\n } else if (xAlign === 'center') {\n x -= (width / 2);\n }\n return x;\n}\n\nfunction alignY(size, yAlign, paddingAndSize) {\n // eslint-disable-next-line prefer-const\n let {y, height} = size;\n if (yAlign === 'top') {\n y += paddingAndSize;\n } else if (yAlign === 'bottom') {\n y -= height + paddingAndSize;\n } else {\n y -= (height / 2);\n }\n return y;\n}\n\n/**\n * Helper to get the location a tooltip needs to be placed at given the initial position (via the vm) and the size and alignment\n */\nfunction getBackgroundPoint(options, size, alignment, chart) {\n const {caretSize, caretPadding, cornerRadius} = options;\n const {xAlign, yAlign} = alignment;\n const paddingAndSize = caretSize + caretPadding;\n const {topLeft, topRight, bottomLeft, bottomRight} = toTRBLCorners(cornerRadius);\n\n let x = alignX(size, xAlign);\n const y = alignY(size, yAlign, paddingAndSize);\n\n if (yAlign === 'center') {\n if (xAlign === 'left') {\n x += paddingAndSize;\n } else if (xAlign === 'right') {\n x -= paddingAndSize;\n }\n } else if (xAlign === 'left') {\n x -= Math.max(topLeft, bottomLeft) + caretSize;\n } else if (xAlign === 'right') {\n x += Math.max(topRight, bottomRight) + caretSize;\n }\n\n return {\n x: _limitValue(x, 0, chart.width - size.width),\n y: _limitValue(y, 0, chart.height - size.height)\n };\n}\n\nfunction getAlignedX(tooltip, align, options) {\n const padding = toPadding(options.padding);\n\n return align === 'center'\n ? tooltip.x + tooltip.width / 2\n : align === 'right'\n ? tooltip.x + tooltip.width - padding.right\n : tooltip.x + padding.left;\n}\n\n/**\n * Helper to build before and after body lines\n */\nfunction getBeforeAfterBodyLines(callback) {\n return pushOrConcat([], splitNewlines(callback));\n}\n\nfunction createTooltipContext(parent, tooltip, tooltipItems) {\n return createContext(parent, {\n tooltip,\n tooltipItems,\n type: 'tooltip'\n });\n}\n\nfunction overrideCallbacks(callbacks, context) {\n const override = context && context.dataset && context.dataset.tooltip && context.dataset.tooltip.callbacks;\n return override ? callbacks.override(override) : callbacks;\n}\n\nconst defaultCallbacks = {\n // Args are: (tooltipItems, data)\n beforeTitle: noop,\n title(tooltipItems) {\n if (tooltipItems.length > 0) {\n const item = tooltipItems[0];\n const labels = item.chart.data.labels;\n const labelCount = labels ? labels.length : 0;\n\n if (this && this.options && this.options.mode === 'dataset') {\n return item.dataset.label || '';\n } else if (item.label) {\n return item.label;\n } else if (labelCount > 0 && item.dataIndex < labelCount) {\n return labels[item.dataIndex];\n }\n }\n\n return '';\n },\n afterTitle: noop,\n\n // Args are: (tooltipItems, data)\n beforeBody: noop,\n\n // Args are: (tooltipItem, data)\n beforeLabel: noop,\n label(tooltipItem) {\n if (this && this.options && this.options.mode === 'dataset') {\n return tooltipItem.label + ': ' + tooltipItem.formattedValue || tooltipItem.formattedValue;\n }\n\n let label = tooltipItem.dataset.label || '';\n\n if (label) {\n label += ': ';\n }\n const value = tooltipItem.formattedValue;\n if (!isNullOrUndef(value)) {\n label += value;\n }\n return label;\n },\n labelColor(tooltipItem) {\n const meta = tooltipItem.chart.getDatasetMeta(tooltipItem.datasetIndex);\n const options = meta.controller.getStyle(tooltipItem.dataIndex);\n return {\n borderColor: options.borderColor,\n backgroundColor: options.backgroundColor,\n borderWidth: options.borderWidth,\n borderDash: options.borderDash,\n borderDashOffset: options.borderDashOffset,\n borderRadius: 0,\n };\n },\n labelTextColor() {\n return this.options.bodyColor;\n },\n labelPointStyle(tooltipItem) {\n const meta = tooltipItem.chart.getDatasetMeta(tooltipItem.datasetIndex);\n const options = meta.controller.getStyle(tooltipItem.dataIndex);\n return {\n pointStyle: options.pointStyle,\n rotation: options.rotation,\n };\n },\n afterLabel: noop,\n\n // Args are: (tooltipItems, data)\n afterBody: noop,\n\n // Args are: (tooltipItems, data)\n beforeFooter: noop,\n footer: noop,\n afterFooter: noop\n};\n\n/**\n * Invoke callback from object with context and arguments.\n * If callback returns `undefined`, then will be invoked default callback.\n * @param {Record} callbacks\n * @param {keyof typeof defaultCallbacks} name\n * @param {*} ctx\n * @param {*} arg\n * @returns {any}\n */\nfunction invokeCallbackWithFallback(callbacks, name, ctx, arg) {\n const result = callbacks[name].call(ctx, arg);\n\n if (typeof result === 'undefined') {\n return defaultCallbacks[name].call(ctx, arg);\n }\n\n return result;\n}\n\nexport class Tooltip extends Element {\n\n /**\n * @namespace Chart.Tooltip.positioners\n */\n static positioners = positioners;\n\n constructor(config) {\n super();\n\n this.opacity = 0;\n this._active = [];\n this._eventPosition = undefined;\n this._size = undefined;\n this._cachedAnimations = undefined;\n this._tooltipItems = [];\n this.$animations = undefined;\n this.$context = undefined;\n this.chart = config.chart;\n this.options = config.options;\n this.dataPoints = undefined;\n this.title = undefined;\n this.beforeBody = undefined;\n this.body = undefined;\n this.afterBody = undefined;\n this.footer = undefined;\n this.xAlign = undefined;\n this.yAlign = undefined;\n this.x = undefined;\n this.y = undefined;\n this.height = undefined;\n this.width = undefined;\n this.caretX = undefined;\n this.caretY = undefined;\n // TODO: V4, make this private, rename to `_labelStyles`, and combine with `labelPointStyles`\n // and `labelTextColors` to create a single variable\n this.labelColors = undefined;\n this.labelPointStyles = undefined;\n this.labelTextColors = undefined;\n }\n\n initialize(options) {\n this.options = options;\n this._cachedAnimations = undefined;\n this.$context = undefined;\n }\n\n /**\n\t * @private\n\t */\n _resolveAnimations() {\n const cached = this._cachedAnimations;\n\n if (cached) {\n return cached;\n }\n\n const chart = this.chart;\n const options = this.options.setContext(this.getContext());\n const opts = options.enabled && chart.options.animation && options.animations;\n const animations = new Animations(this.chart, opts);\n if (opts._cacheable) {\n this._cachedAnimations = Object.freeze(animations);\n }\n\n return animations;\n }\n\n /**\n\t * @protected\n\t */\n getContext() {\n return this.$context ||\n\t\t\t(this.$context = createTooltipContext(this.chart.getContext(), this, this._tooltipItems));\n }\n\n getTitle(context, options) {\n const {callbacks} = options;\n\n const beforeTitle = invokeCallbackWithFallback(callbacks, 'beforeTitle', this, context);\n const title = invokeCallbackWithFallback(callbacks, 'title', this, context);\n const afterTitle = invokeCallbackWithFallback(callbacks, 'afterTitle', this, context);\n\n let lines = [];\n lines = pushOrConcat(lines, splitNewlines(beforeTitle));\n lines = pushOrConcat(lines, splitNewlines(title));\n lines = pushOrConcat(lines, splitNewlines(afterTitle));\n\n return lines;\n }\n\n getBeforeBody(tooltipItems, options) {\n return getBeforeAfterBodyLines(\n invokeCallbackWithFallback(options.callbacks, 'beforeBody', this, tooltipItems)\n );\n }\n\n getBody(tooltipItems, options) {\n const {callbacks} = options;\n const bodyItems = [];\n\n each(tooltipItems, (context) => {\n const bodyItem = {\n before: [],\n lines: [],\n after: []\n };\n const scoped = overrideCallbacks(callbacks, context);\n pushOrConcat(bodyItem.before, splitNewlines(invokeCallbackWithFallback(scoped, 'beforeLabel', this, context)));\n pushOrConcat(bodyItem.lines, invokeCallbackWithFallback(scoped, 'label', this, context));\n pushOrConcat(bodyItem.after, splitNewlines(invokeCallbackWithFallback(scoped, 'afterLabel', this, context)));\n\n bodyItems.push(bodyItem);\n });\n\n return bodyItems;\n }\n\n getAfterBody(tooltipItems, options) {\n return getBeforeAfterBodyLines(\n invokeCallbackWithFallback(options.callbacks, 'afterBody', this, tooltipItems)\n );\n }\n\n // Get the footer and beforeFooter and afterFooter lines\n getFooter(tooltipItems, options) {\n const {callbacks} = options;\n\n const beforeFooter = invokeCallbackWithFallback(callbacks, 'beforeFooter', this, tooltipItems);\n const footer = invokeCallbackWithFallback(callbacks, 'footer', this, tooltipItems);\n const afterFooter = invokeCallbackWithFallback(callbacks, 'afterFooter', this, tooltipItems);\n\n let lines = [];\n lines = pushOrConcat(lines, splitNewlines(beforeFooter));\n lines = pushOrConcat(lines, splitNewlines(footer));\n lines = pushOrConcat(lines, splitNewlines(afterFooter));\n\n return lines;\n }\n\n /**\n\t * @private\n\t */\n _createItems(options) {\n const active = this._active;\n const data = this.chart.data;\n const labelColors = [];\n const labelPointStyles = [];\n const labelTextColors = [];\n let tooltipItems = [];\n let i, len;\n\n for (i = 0, len = active.length; i < len; ++i) {\n tooltipItems.push(createTooltipItem(this.chart, active[i]));\n }\n\n // If the user provided a filter function, use it to modify the tooltip items\n if (options.filter) {\n tooltipItems = tooltipItems.filter((element, index, array) => options.filter(element, index, array, data));\n }\n\n // If the user provided a sorting function, use it to modify the tooltip items\n if (options.itemSort) {\n tooltipItems = tooltipItems.sort((a, b) => options.itemSort(a, b, data));\n }\n\n // Determine colors for boxes\n each(tooltipItems, (context) => {\n const scoped = overrideCallbacks(options.callbacks, context);\n labelColors.push(invokeCallbackWithFallback(scoped, 'labelColor', this, context));\n labelPointStyles.push(invokeCallbackWithFallback(scoped, 'labelPointStyle', this, context));\n labelTextColors.push(invokeCallbackWithFallback(scoped, 'labelTextColor', this, context));\n });\n\n this.labelColors = labelColors;\n this.labelPointStyles = labelPointStyles;\n this.labelTextColors = labelTextColors;\n this.dataPoints = tooltipItems;\n return tooltipItems;\n }\n\n update(changed, replay) {\n const options = this.options.setContext(this.getContext());\n const active = this._active;\n let properties;\n let tooltipItems = [];\n\n if (!active.length) {\n if (this.opacity !== 0) {\n properties = {\n opacity: 0\n };\n }\n } else {\n const position = positioners[options.position].call(this, active, this._eventPosition);\n tooltipItems = this._createItems(options);\n\n this.title = this.getTitle(tooltipItems, options);\n this.beforeBody = this.getBeforeBody(tooltipItems, options);\n this.body = this.getBody(tooltipItems, options);\n this.afterBody = this.getAfterBody(tooltipItems, options);\n this.footer = this.getFooter(tooltipItems, options);\n\n const size = this._size = getTooltipSize(this, options);\n const positionAndSize = Object.assign({}, position, size);\n const alignment = determineAlignment(this.chart, options, positionAndSize);\n const backgroundPoint = getBackgroundPoint(options, positionAndSize, alignment, this.chart);\n\n this.xAlign = alignment.xAlign;\n this.yAlign = alignment.yAlign;\n\n properties = {\n opacity: 1,\n x: backgroundPoint.x,\n y: backgroundPoint.y,\n width: size.width,\n height: size.height,\n caretX: position.x,\n caretY: position.y\n };\n }\n\n this._tooltipItems = tooltipItems;\n this.$context = undefined;\n\n if (properties) {\n this._resolveAnimations().update(this, properties);\n }\n\n if (changed && options.external) {\n options.external.call(this, {chart: this.chart, tooltip: this, replay});\n }\n }\n\n drawCaret(tooltipPoint, ctx, size, options) {\n const caretPosition = this.getCaretPosition(tooltipPoint, size, options);\n\n ctx.lineTo(caretPosition.x1, caretPosition.y1);\n ctx.lineTo(caretPosition.x2, caretPosition.y2);\n ctx.lineTo(caretPosition.x3, caretPosition.y3);\n }\n\n getCaretPosition(tooltipPoint, size, options) {\n const {xAlign, yAlign} = this;\n const {caretSize, cornerRadius} = options;\n const {topLeft, topRight, bottomLeft, bottomRight} = toTRBLCorners(cornerRadius);\n const {x: ptX, y: ptY} = tooltipPoint;\n const {width, height} = size;\n let x1, x2, x3, y1, y2, y3;\n\n if (yAlign === 'center') {\n y2 = ptY + (height / 2);\n\n if (xAlign === 'left') {\n x1 = ptX;\n x2 = x1 - caretSize;\n\n // Left draws bottom -> top, this y1 is on the bottom\n y1 = y2 + caretSize;\n y3 = y2 - caretSize;\n } else {\n x1 = ptX + width;\n x2 = x1 + caretSize;\n\n // Right draws top -> bottom, thus y1 is on the top\n y1 = y2 - caretSize;\n y3 = y2 + caretSize;\n }\n\n x3 = x1;\n } else {\n if (xAlign === 'left') {\n x2 = ptX + Math.max(topLeft, bottomLeft) + (caretSize);\n } else if (xAlign === 'right') {\n x2 = ptX + width - Math.max(topRight, bottomRight) - caretSize;\n } else {\n x2 = this.caretX;\n }\n\n if (yAlign === 'top') {\n y1 = ptY;\n y2 = y1 - caretSize;\n\n // Top draws left -> right, thus x1 is on the left\n x1 = x2 - caretSize;\n x3 = x2 + caretSize;\n } else {\n y1 = ptY + height;\n y2 = y1 + caretSize;\n\n // Bottom draws right -> left, thus x1 is on the right\n x1 = x2 + caretSize;\n x3 = x2 - caretSize;\n }\n y3 = y1;\n }\n return {x1, x2, x3, y1, y2, y3};\n }\n\n drawTitle(pt, ctx, options) {\n const title = this.title;\n const length = title.length;\n let titleFont, titleSpacing, i;\n\n if (length) {\n const rtlHelper = getRtlAdapter(options.rtl, this.x, this.width);\n\n pt.x = getAlignedX(this, options.titleAlign, options);\n\n ctx.textAlign = rtlHelper.textAlign(options.titleAlign);\n ctx.textBaseline = 'middle';\n\n titleFont = toFont(options.titleFont);\n titleSpacing = options.titleSpacing;\n\n ctx.fillStyle = options.titleColor;\n ctx.font = titleFont.string;\n\n for (i = 0; i < length; ++i) {\n ctx.fillText(title[i], rtlHelper.x(pt.x), pt.y + titleFont.lineHeight / 2);\n pt.y += titleFont.lineHeight + titleSpacing; // Line Height and spacing\n\n if (i + 1 === length) {\n pt.y += options.titleMarginBottom - titleSpacing; // If Last, add margin, remove spacing\n }\n }\n }\n }\n\n /**\n\t * @private\n\t */\n _drawColorBox(ctx, pt, i, rtlHelper, options) {\n const labelColor = this.labelColors[i];\n const labelPointStyle = this.labelPointStyles[i];\n const {boxHeight, boxWidth} = options;\n const bodyFont = toFont(options.bodyFont);\n const colorX = getAlignedX(this, 'left', options);\n const rtlColorX = rtlHelper.x(colorX);\n const yOffSet = boxHeight < bodyFont.lineHeight ? (bodyFont.lineHeight - boxHeight) / 2 : 0;\n const colorY = pt.y + yOffSet;\n\n if (options.usePointStyle) {\n const drawOptions = {\n radius: Math.min(boxWidth, boxHeight) / 2, // fit the circle in the box\n pointStyle: labelPointStyle.pointStyle,\n rotation: labelPointStyle.rotation,\n borderWidth: 1\n };\n // Recalculate x and y for drawPoint() because its expecting\n // x and y to be center of figure (instead of top left)\n const centerX = rtlHelper.leftForLtr(rtlColorX, boxWidth) + boxWidth / 2;\n const centerY = colorY + boxHeight / 2;\n\n // Fill the point with white so that colours merge nicely if the opacity is < 1\n ctx.strokeStyle = options.multiKeyBackground;\n ctx.fillStyle = options.multiKeyBackground;\n drawPoint(ctx, drawOptions, centerX, centerY);\n\n // Draw the point\n ctx.strokeStyle = labelColor.borderColor;\n ctx.fillStyle = labelColor.backgroundColor;\n drawPoint(ctx, drawOptions, centerX, centerY);\n } else {\n // Border\n ctx.lineWidth = isObject(labelColor.borderWidth) ? Math.max(...Object.values(labelColor.borderWidth)) : (labelColor.borderWidth || 1); // TODO, v4 remove fallback\n ctx.strokeStyle = labelColor.borderColor;\n ctx.setLineDash(labelColor.borderDash || []);\n ctx.lineDashOffset = labelColor.borderDashOffset || 0;\n\n // Fill a white rect so that colours merge nicely if the opacity is < 1\n const outerX = rtlHelper.leftForLtr(rtlColorX, boxWidth);\n const innerX = rtlHelper.leftForLtr(rtlHelper.xPlus(rtlColorX, 1), boxWidth - 2);\n const borderRadius = toTRBLCorners(labelColor.borderRadius);\n\n if (Object.values(borderRadius).some(v => v !== 0)) {\n ctx.beginPath();\n ctx.fillStyle = options.multiKeyBackground;\n addRoundedRectPath(ctx, {\n x: outerX,\n y: colorY,\n w: boxWidth,\n h: boxHeight,\n radius: borderRadius,\n });\n ctx.fill();\n ctx.stroke();\n\n // Inner square\n ctx.fillStyle = labelColor.backgroundColor;\n ctx.beginPath();\n addRoundedRectPath(ctx, {\n x: innerX,\n y: colorY + 1,\n w: boxWidth - 2,\n h: boxHeight - 2,\n radius: borderRadius,\n });\n ctx.fill();\n } else {\n // Normal rect\n ctx.fillStyle = options.multiKeyBackground;\n ctx.fillRect(outerX, colorY, boxWidth, boxHeight);\n ctx.strokeRect(outerX, colorY, boxWidth, boxHeight);\n // Inner square\n ctx.fillStyle = labelColor.backgroundColor;\n ctx.fillRect(innerX, colorY + 1, boxWidth - 2, boxHeight - 2);\n }\n }\n\n // restore fillStyle\n ctx.fillStyle = this.labelTextColors[i];\n }\n\n drawBody(pt, ctx, options) {\n const {body} = this;\n const {bodySpacing, bodyAlign, displayColors, boxHeight, boxWidth, boxPadding} = options;\n const bodyFont = toFont(options.bodyFont);\n let bodyLineHeight = bodyFont.lineHeight;\n let xLinePadding = 0;\n\n const rtlHelper = getRtlAdapter(options.rtl, this.x, this.width);\n\n const fillLineOfText = function(line) {\n ctx.fillText(line, rtlHelper.x(pt.x + xLinePadding), pt.y + bodyLineHeight / 2);\n pt.y += bodyLineHeight + bodySpacing;\n };\n\n const bodyAlignForCalculation = rtlHelper.textAlign(bodyAlign);\n let bodyItem, textColor, lines, i, j, ilen, jlen;\n\n ctx.textAlign = bodyAlign;\n ctx.textBaseline = 'middle';\n ctx.font = bodyFont.string;\n\n pt.x = getAlignedX(this, bodyAlignForCalculation, options);\n\n // Before body lines\n ctx.fillStyle = options.bodyColor;\n each(this.beforeBody, fillLineOfText);\n\n xLinePadding = displayColors && bodyAlignForCalculation !== 'right'\n ? bodyAlign === 'center' ? (boxWidth / 2 + boxPadding) : (boxWidth + 2 + boxPadding)\n : 0;\n\n // Draw body lines now\n for (i = 0, ilen = body.length; i < ilen; ++i) {\n bodyItem = body[i];\n textColor = this.labelTextColors[i];\n\n ctx.fillStyle = textColor;\n each(bodyItem.before, fillLineOfText);\n\n lines = bodyItem.lines;\n // Draw Legend-like boxes if needed\n if (displayColors && lines.length) {\n this._drawColorBox(ctx, pt, i, rtlHelper, options);\n bodyLineHeight = Math.max(bodyFont.lineHeight, boxHeight);\n }\n\n for (j = 0, jlen = lines.length; j < jlen; ++j) {\n fillLineOfText(lines[j]);\n // Reset for any lines that don't include colorbox\n bodyLineHeight = bodyFont.lineHeight;\n }\n\n each(bodyItem.after, fillLineOfText);\n }\n\n // Reset back to 0 for after body\n xLinePadding = 0;\n bodyLineHeight = bodyFont.lineHeight;\n\n // After body lines\n each(this.afterBody, fillLineOfText);\n pt.y -= bodySpacing; // Remove last body spacing\n }\n\n drawFooter(pt, ctx, options) {\n const footer = this.footer;\n const length = footer.length;\n let footerFont, i;\n\n if (length) {\n const rtlHelper = getRtlAdapter(options.rtl, this.x, this.width);\n\n pt.x = getAlignedX(this, options.footerAlign, options);\n pt.y += options.footerMarginTop;\n\n ctx.textAlign = rtlHelper.textAlign(options.footerAlign);\n ctx.textBaseline = 'middle';\n\n footerFont = toFont(options.footerFont);\n\n ctx.fillStyle = options.footerColor;\n ctx.font = footerFont.string;\n\n for (i = 0; i < length; ++i) {\n ctx.fillText(footer[i], rtlHelper.x(pt.x), pt.y + footerFont.lineHeight / 2);\n pt.y += footerFont.lineHeight + options.footerSpacing;\n }\n }\n }\n\n drawBackground(pt, ctx, tooltipSize, options) {\n const {xAlign, yAlign} = this;\n const {x, y} = pt;\n const {width, height} = tooltipSize;\n const {topLeft, topRight, bottomLeft, bottomRight} = toTRBLCorners(options.cornerRadius);\n\n ctx.fillStyle = options.backgroundColor;\n ctx.strokeStyle = options.borderColor;\n ctx.lineWidth = options.borderWidth;\n\n ctx.beginPath();\n ctx.moveTo(x + topLeft, y);\n if (yAlign === 'top') {\n this.drawCaret(pt, ctx, tooltipSize, options);\n }\n ctx.lineTo(x + width - topRight, y);\n ctx.quadraticCurveTo(x + width, y, x + width, y + topRight);\n if (yAlign === 'center' && xAlign === 'right') {\n this.drawCaret(pt, ctx, tooltipSize, options);\n }\n ctx.lineTo(x + width, y + height - bottomRight);\n ctx.quadraticCurveTo(x + width, y + height, x + width - bottomRight, y + height);\n if (yAlign === 'bottom') {\n this.drawCaret(pt, ctx, tooltipSize, options);\n }\n ctx.lineTo(x + bottomLeft, y + height);\n ctx.quadraticCurveTo(x, y + height, x, y + height - bottomLeft);\n if (yAlign === 'center' && xAlign === 'left') {\n this.drawCaret(pt, ctx, tooltipSize, options);\n }\n ctx.lineTo(x, y + topLeft);\n ctx.quadraticCurveTo(x, y, x + topLeft, y);\n ctx.closePath();\n\n ctx.fill();\n\n if (options.borderWidth > 0) {\n ctx.stroke();\n }\n }\n\n /**\n\t * Update x/y animation targets when _active elements are animating too\n\t * @private\n\t */\n _updateAnimationTarget(options) {\n const chart = this.chart;\n const anims = this.$animations;\n const animX = anims && anims.x;\n const animY = anims && anims.y;\n if (animX || animY) {\n const position = positioners[options.position].call(this, this._active, this._eventPosition);\n if (!position) {\n return;\n }\n const size = this._size = getTooltipSize(this, options);\n const positionAndSize = Object.assign({}, position, this._size);\n const alignment = determineAlignment(chart, options, positionAndSize);\n const point = getBackgroundPoint(options, positionAndSize, alignment, chart);\n if (animX._to !== point.x || animY._to !== point.y) {\n this.xAlign = alignment.xAlign;\n this.yAlign = alignment.yAlign;\n this.width = size.width;\n this.height = size.height;\n this.caretX = position.x;\n this.caretY = position.y;\n this._resolveAnimations().update(this, point);\n }\n }\n }\n\n /**\n * Determine if the tooltip will draw anything\n * @returns {boolean} True if the tooltip will render\n */\n _willRender() {\n return !!this.opacity;\n }\n\n draw(ctx) {\n const options = this.options.setContext(this.getContext());\n let opacity = this.opacity;\n\n if (!opacity) {\n return;\n }\n\n this._updateAnimationTarget(options);\n\n const tooltipSize = {\n width: this.width,\n height: this.height\n };\n const pt = {\n x: this.x,\n y: this.y\n };\n\n // IE11/Edge does not like very small opacities, so snap to 0\n opacity = Math.abs(opacity) < 1e-3 ? 0 : opacity;\n\n const padding = toPadding(options.padding);\n\n // Truthy/falsey value for empty tooltip\n const hasTooltipContent = this.title.length || this.beforeBody.length || this.body.length || this.afterBody.length || this.footer.length;\n\n if (options.enabled && hasTooltipContent) {\n ctx.save();\n ctx.globalAlpha = opacity;\n\n // Draw Background\n this.drawBackground(pt, ctx, tooltipSize, options);\n\n overrideTextDirection(ctx, options.textDirection);\n\n pt.y += padding.top;\n\n // Titles\n this.drawTitle(pt, ctx, options);\n\n // Body\n this.drawBody(pt, ctx, options);\n\n // Footer\n this.drawFooter(pt, ctx, options);\n\n restoreTextDirection(ctx, options.textDirection);\n\n ctx.restore();\n }\n }\n\n /**\n\t * Get active elements in the tooltip\n\t * @returns {Array} Array of elements that are active in the tooltip\n\t */\n getActiveElements() {\n return this._active || [];\n }\n\n /**\n\t * Set active elements in the tooltip\n\t * @param {array} activeElements Array of active datasetIndex/index pairs.\n\t * @param {object} eventPosition Synthetic event position used in positioning\n\t */\n setActiveElements(activeElements, eventPosition) {\n const lastActive = this._active;\n const active = activeElements.map(({datasetIndex, index}) => {\n const meta = this.chart.getDatasetMeta(datasetIndex);\n\n if (!meta) {\n throw new Error('Cannot find a dataset at index ' + datasetIndex);\n }\n\n return {\n datasetIndex,\n element: meta.data[index],\n index,\n };\n });\n const changed = !_elementsEqual(lastActive, active);\n const positionChanged = this._positionChanged(active, eventPosition);\n\n if (changed || positionChanged) {\n this._active = active;\n this._eventPosition = eventPosition;\n this._ignoreReplayEvents = true;\n this.update(true);\n }\n }\n\n /**\n\t * Handle an event\n\t * @param {ChartEvent} e - The event to handle\n\t * @param {boolean} [replay] - This is a replayed event (from update)\n\t * @param {boolean} [inChartArea] - The event is inside chartArea\n\t * @returns {boolean} true if the tooltip changed\n\t */\n handleEvent(e, replay, inChartArea = true) {\n if (replay && this._ignoreReplayEvents) {\n return false;\n }\n this._ignoreReplayEvents = false;\n\n const options = this.options;\n const lastActive = this._active || [];\n const active = this._getActiveElements(e, lastActive, replay, inChartArea);\n\n // When there are multiple items shown, but the tooltip position is nearest mode\n // an update may need to be made because our position may have changed even though\n // the items are the same as before.\n const positionChanged = this._positionChanged(active, e);\n\n // Remember Last Actives\n const changed = replay || !_elementsEqual(active, lastActive) || positionChanged;\n\n // Only handle target event on tooltip change\n if (changed) {\n this._active = active;\n\n if (options.enabled || options.external) {\n this._eventPosition = {\n x: e.x,\n y: e.y\n };\n\n this.update(true, replay);\n }\n }\n\n return changed;\n }\n\n /**\n\t * Helper for determining the active elements for event\n\t * @param {ChartEvent} e - The event to handle\n\t * @param {InteractionItem[]} lastActive - Previously active elements\n\t * @param {boolean} [replay] - This is a replayed event (from update)\n\t * @param {boolean} [inChartArea] - The event is inside chartArea\n\t * @returns {InteractionItem[]} - Active elements\n\t * @private\n\t */\n _getActiveElements(e, lastActive, replay, inChartArea) {\n const options = this.options;\n\n if (e.type === 'mouseout') {\n return [];\n }\n\n if (!inChartArea) {\n // Let user control the active elements outside chartArea. Eg. using Legend.\n // But make sure that active elements are still valid.\n return lastActive.filter(i =>\n this.chart.data.datasets[i.datasetIndex] &&\n this.chart.getDatasetMeta(i.datasetIndex).controller.getParsed(i.index) !== undefined\n );\n }\n\n // Find Active Elements for tooltips\n const active = this.chart.getElementsAtEventForMode(e, options.mode, options, replay);\n\n if (options.reverse) {\n active.reverse();\n }\n\n return active;\n }\n\n /**\n\t * Determine if the active elements + event combination changes the\n\t * tooltip position\n\t * @param {array} active - Active elements\n\t * @param {ChartEvent} e - Event that triggered the position change\n\t * @returns {boolean} True if the position has changed\n\t */\n _positionChanged(active, e) {\n const {caretX, caretY, options} = this;\n const position = positioners[options.position].call(this, active, e);\n return position !== false && (caretX !== position.x || caretY !== position.y);\n }\n}\n\nexport default {\n id: 'tooltip',\n _element: Tooltip,\n positioners,\n\n afterInit(chart, _args, options) {\n if (options) {\n chart.tooltip = new Tooltip({chart, options});\n }\n },\n\n beforeUpdate(chart, _args, options) {\n if (chart.tooltip) {\n chart.tooltip.initialize(options);\n }\n },\n\n reset(chart, _args, options) {\n if (chart.tooltip) {\n chart.tooltip.initialize(options);\n }\n },\n\n afterDraw(chart) {\n const tooltip = chart.tooltip;\n\n if (tooltip && tooltip._willRender()) {\n const args = {\n tooltip\n };\n\n if (chart.notifyPlugins('beforeTooltipDraw', {...args, cancelable: true}) === false) {\n return;\n }\n\n tooltip.draw(chart.ctx);\n\n chart.notifyPlugins('afterTooltipDraw', args);\n }\n },\n\n afterEvent(chart, args) {\n if (chart.tooltip) {\n // If the event is replayed from `update`, we should evaluate with the final positions.\n const useFinalPosition = args.replay;\n if (chart.tooltip.handleEvent(args.event, useFinalPosition, args.inChartArea)) {\n // notify chart about the change, so it will render\n args.changed = true;\n }\n }\n },\n\n defaults: {\n enabled: true,\n external: null,\n position: 'average',\n backgroundColor: 'rgba(0,0,0,0.8)',\n titleColor: '#fff',\n titleFont: {\n weight: 'bold',\n },\n titleSpacing: 2,\n titleMarginBottom: 6,\n titleAlign: 'left',\n bodyColor: '#fff',\n bodySpacing: 2,\n bodyFont: {\n },\n bodyAlign: 'left',\n footerColor: '#fff',\n footerSpacing: 2,\n footerMarginTop: 6,\n footerFont: {\n weight: 'bold',\n },\n footerAlign: 'left',\n padding: 6,\n caretPadding: 2,\n caretSize: 5,\n cornerRadius: 6,\n boxHeight: (ctx, opts) => opts.bodyFont.size,\n boxWidth: (ctx, opts) => opts.bodyFont.size,\n multiKeyBackground: '#fff',\n displayColors: true,\n boxPadding: 0,\n borderColor: 'rgba(0,0,0,0)',\n borderWidth: 0,\n animation: {\n duration: 400,\n easing: 'easeOutQuart',\n },\n animations: {\n numbers: {\n type: 'number',\n properties: ['x', 'y', 'width', 'height', 'caretX', 'caretY'],\n },\n opacity: {\n easing: 'linear',\n duration: 200\n }\n },\n callbacks: defaultCallbacks\n },\n\n defaultRoutes: {\n bodyFont: 'font',\n footerFont: 'font',\n titleFont: 'font'\n },\n\n descriptors: {\n _scriptable: (name) => name !== 'filter' && name !== 'itemSort' && name !== 'external',\n _indexable: false,\n callbacks: {\n _scriptable: false,\n _indexable: false,\n },\n animation: {\n _fallback: false\n },\n animations: {\n _fallback: 'animation'\n }\n },\n\n // Resolve additionally from `interaction` options and defaults.\n additionalOptionScopes: ['interaction']\n};\n","import Scale from '../core/core.scale.js';\nimport {isNullOrUndef, valueOrDefault, _limitValue} from '../helpers/index.js';\n\nconst addIfString = (labels, raw, index, addedLabels) => {\n if (typeof raw === 'string') {\n index = labels.push(raw) - 1;\n addedLabels.unshift({index, label: raw});\n } else if (isNaN(raw)) {\n index = null;\n }\n return index;\n};\n\nfunction findOrAddLabel(labels, raw, index, addedLabels) {\n const first = labels.indexOf(raw);\n if (first === -1) {\n return addIfString(labels, raw, index, addedLabels);\n }\n const last = labels.lastIndexOf(raw);\n return first !== last ? index : first;\n}\n\nconst validIndex = (index, max) => index === null ? null : _limitValue(Math.round(index), 0, max);\n\nfunction _getLabelForValue(value) {\n const labels = this.getLabels();\n\n if (value >= 0 && value < labels.length) {\n return labels[value];\n }\n return value;\n}\n\nexport default class CategoryScale extends Scale {\n\n static id = 'category';\n\n /**\n * @type {any}\n */\n static defaults = {\n ticks: {\n callback: _getLabelForValue\n }\n };\n\n constructor(cfg) {\n super(cfg);\n\n /** @type {number} */\n this._startValue = undefined;\n this._valueRange = 0;\n this._addedLabels = [];\n }\n\n init(scaleOptions) {\n const added = this._addedLabels;\n if (added.length) {\n const labels = this.getLabels();\n for (const {index, label} of added) {\n if (labels[index] === label) {\n labels.splice(index, 1);\n }\n }\n this._addedLabels = [];\n }\n super.init(scaleOptions);\n }\n\n parse(raw, index) {\n if (isNullOrUndef(raw)) {\n return null;\n }\n const labels = this.getLabels();\n index = isFinite(index) && labels[index] === raw ? index\n : findOrAddLabel(labels, raw, valueOrDefault(index, raw), this._addedLabels);\n return validIndex(index, labels.length - 1);\n }\n\n determineDataLimits() {\n const {minDefined, maxDefined} = this.getUserBounds();\n let {min, max} = this.getMinMax(true);\n\n if (this.options.bounds === 'ticks') {\n if (!minDefined) {\n min = 0;\n }\n if (!maxDefined) {\n max = this.getLabels().length - 1;\n }\n }\n\n this.min = min;\n this.max = max;\n }\n\n buildTicks() {\n const min = this.min;\n const max = this.max;\n const offset = this.options.offset;\n const ticks = [];\n let labels = this.getLabels();\n\n // If we are viewing some subset of labels, slice the original array\n labels = (min === 0 && max === labels.length - 1) ? labels : labels.slice(min, max + 1);\n\n this._valueRange = Math.max(labels.length - (offset ? 0 : 1), 1);\n this._startValue = this.min - (offset ? 0.5 : 0);\n\n for (let value = min; value <= max; value++) {\n ticks.push({value});\n }\n return ticks;\n }\n\n getLabelForValue(value) {\n return _getLabelForValue.call(this, value);\n }\n\n /**\n\t * @protected\n\t */\n configure() {\n super.configure();\n\n if (!this.isHorizontal()) {\n // For backward compatibility, vertical category scale reverse is inverted.\n this._reversePixels = !this._reversePixels;\n }\n }\n\n // Used to get data value locations. Value can either be an index or a numerical value\n getPixelForValue(value) {\n if (typeof value !== 'number') {\n value = this.parse(value);\n }\n\n return value === null ? NaN : this.getPixelForDecimal((value - this._startValue) / this._valueRange);\n }\n\n // Must override base implementation because it calls getPixelForValue\n // and category scale can have duplicate values\n getPixelForTick(index) {\n const ticks = this.ticks;\n if (index < 0 || index > ticks.length - 1) {\n return null;\n }\n return this.getPixelForValue(ticks[index].value);\n }\n\n getValueForPixel(pixel) {\n return Math.round(this._startValue + this.getDecimalForPixel(pixel) * this._valueRange);\n }\n\n getBasePixel() {\n return this.bottom;\n }\n}\n","import {isNullOrUndef} from '../helpers/helpers.core.js';\nimport {almostEquals, almostWhole, niceNum, _decimalPlaces, _setMinAndMaxByKey, sign, toRadians} from '../helpers/helpers.math.js';\nimport Scale from '../core/core.scale.js';\nimport {formatNumber} from '../helpers/helpers.intl.js';\n\n/**\n * Generate a set of linear ticks for an axis\n * 1. If generationOptions.min, generationOptions.max, and generationOptions.step are defined:\n * if (max - min) / step is an integer, ticks are generated as [min, min + step, ..., max]\n * Note that the generationOptions.maxCount setting is respected in this scenario\n *\n * 2. If generationOptions.min, generationOptions.max, and generationOptions.count is defined\n * spacing = (max - min) / count\n * Ticks are generated as [min, min + spacing, ..., max]\n *\n * 3. If generationOptions.count is defined\n * spacing = (niceMax - niceMin) / count\n *\n * 4. Compute optimal spacing of ticks using niceNum algorithm\n *\n * @param generationOptions the options used to generate the ticks\n * @param dataRange the range of the data\n * @returns {object[]} array of tick objects\n */\nfunction generateTicks(generationOptions, dataRange) {\n const ticks = [];\n // To get a \"nice\" value for the tick spacing, we will use the appropriately named\n // \"nice number\" algorithm. See https://stackoverflow.com/questions/8506881/nice-label-algorithm-for-charts-with-minimum-ticks\n // for details.\n\n const MIN_SPACING = 1e-14;\n const {bounds, step, min, max, precision, count, maxTicks, maxDigits, includeBounds} = generationOptions;\n const unit = step || 1;\n const maxSpaces = maxTicks - 1;\n const {min: rmin, max: rmax} = dataRange;\n const minDefined = !isNullOrUndef(min);\n const maxDefined = !isNullOrUndef(max);\n const countDefined = !isNullOrUndef(count);\n const minSpacing = (rmax - rmin) / (maxDigits + 1);\n let spacing = niceNum((rmax - rmin) / maxSpaces / unit) * unit;\n let factor, niceMin, niceMax, numSpaces;\n\n // Beyond MIN_SPACING floating point numbers being to lose precision\n // such that we can't do the math necessary to generate ticks\n if (spacing < MIN_SPACING && !minDefined && !maxDefined) {\n return [{value: rmin}, {value: rmax}];\n }\n\n numSpaces = Math.ceil(rmax / spacing) - Math.floor(rmin / spacing);\n if (numSpaces > maxSpaces) {\n // If the calculated num of spaces exceeds maxNumSpaces, recalculate it\n spacing = niceNum(numSpaces * spacing / maxSpaces / unit) * unit;\n }\n\n if (!isNullOrUndef(precision)) {\n // If the user specified a precision, round to that number of decimal places\n factor = Math.pow(10, precision);\n spacing = Math.ceil(spacing * factor) / factor;\n }\n\n if (bounds === 'ticks') {\n niceMin = Math.floor(rmin / spacing) * spacing;\n niceMax = Math.ceil(rmax / spacing) * spacing;\n } else {\n niceMin = rmin;\n niceMax = rmax;\n }\n\n if (minDefined && maxDefined && step && almostWhole((max - min) / step, spacing / 1000)) {\n // Case 1: If min, max and stepSize are set and they make an evenly spaced scale use it.\n // spacing = step;\n // numSpaces = (max - min) / spacing;\n // Note that we round here to handle the case where almostWhole translated an FP error\n numSpaces = Math.round(Math.min((max - min) / spacing, maxTicks));\n spacing = (max - min) / numSpaces;\n niceMin = min;\n niceMax = max;\n } else if (countDefined) {\n // Cases 2 & 3, we have a count specified. Handle optional user defined edges to the range.\n // Sometimes these are no-ops, but it makes the code a lot clearer\n // and when a user defined range is specified, we want the correct ticks\n niceMin = minDefined ? min : niceMin;\n niceMax = maxDefined ? max : niceMax;\n numSpaces = count - 1;\n spacing = (niceMax - niceMin) / numSpaces;\n } else {\n // Case 4\n numSpaces = (niceMax - niceMin) / spacing;\n\n // If very close to our rounded value, use it.\n if (almostEquals(numSpaces, Math.round(numSpaces), spacing / 1000)) {\n numSpaces = Math.round(numSpaces);\n } else {\n numSpaces = Math.ceil(numSpaces);\n }\n }\n\n // The spacing will have changed in cases 1, 2, and 3 so the factor cannot be computed\n // until this point\n const decimalPlaces = Math.max(\n _decimalPlaces(spacing),\n _decimalPlaces(niceMin)\n );\n factor = Math.pow(10, isNullOrUndef(precision) ? decimalPlaces : precision);\n niceMin = Math.round(niceMin * factor) / factor;\n niceMax = Math.round(niceMax * factor) / factor;\n\n let j = 0;\n if (minDefined) {\n if (includeBounds && niceMin !== min) {\n ticks.push({value: min});\n\n if (niceMin < min) {\n j++; // Skip niceMin\n }\n // If the next nice tick is close to min, skip it\n if (almostEquals(Math.round((niceMin + j * spacing) * factor) / factor, min, relativeLabelSize(min, minSpacing, generationOptions))) {\n j++;\n }\n } else if (niceMin < min) {\n j++;\n }\n }\n\n for (; j < numSpaces; ++j) {\n const tickValue = Math.round((niceMin + j * spacing) * factor) / factor;\n if (maxDefined && tickValue > max) {\n break;\n }\n ticks.push({value: tickValue});\n }\n\n if (maxDefined && includeBounds && niceMax !== max) {\n // If the previous tick is too close to max, replace it with max, else add max\n if (ticks.length && almostEquals(ticks[ticks.length - 1].value, max, relativeLabelSize(max, minSpacing, generationOptions))) {\n ticks[ticks.length - 1].value = max;\n } else {\n ticks.push({value: max});\n }\n } else if (!maxDefined || niceMax === max) {\n ticks.push({value: niceMax});\n }\n\n return ticks;\n}\n\nfunction relativeLabelSize(value, minSpacing, {horizontal, minRotation}) {\n const rad = toRadians(minRotation);\n const ratio = (horizontal ? Math.sin(rad) : Math.cos(rad)) || 0.001;\n const length = 0.75 * minSpacing * ('' + value).length;\n return Math.min(minSpacing / ratio, length);\n}\n\nexport default class LinearScaleBase extends Scale {\n\n constructor(cfg) {\n super(cfg);\n\n /** @type {number} */\n this.start = undefined;\n /** @type {number} */\n this.end = undefined;\n /** @type {number} */\n this._startValue = undefined;\n /** @type {number} */\n this._endValue = undefined;\n this._valueRange = 0;\n }\n\n parse(raw, index) { // eslint-disable-line no-unused-vars\n if (isNullOrUndef(raw)) {\n return null;\n }\n if ((typeof raw === 'number' || raw instanceof Number) && !isFinite(+raw)) {\n return null;\n }\n\n return +raw;\n }\n\n handleTickRangeOptions() {\n const {beginAtZero} = this.options;\n const {minDefined, maxDefined} = this.getUserBounds();\n let {min, max} = this;\n\n const setMin = v => (min = minDefined ? min : v);\n const setMax = v => (max = maxDefined ? max : v);\n\n if (beginAtZero) {\n const minSign = sign(min);\n const maxSign = sign(max);\n\n if (minSign < 0 && maxSign < 0) {\n setMax(0);\n } else if (minSign > 0 && maxSign > 0) {\n setMin(0);\n }\n }\n\n if (min === max) {\n let offset = max === 0 ? 1 : Math.abs(max * 0.05);\n\n setMax(max + offset);\n\n if (!beginAtZero) {\n setMin(min - offset);\n }\n }\n this.min = min;\n this.max = max;\n }\n\n getTickLimit() {\n const tickOpts = this.options.ticks;\n // eslint-disable-next-line prefer-const\n let {maxTicksLimit, stepSize} = tickOpts;\n let maxTicks;\n\n if (stepSize) {\n maxTicks = Math.ceil(this.max / stepSize) - Math.floor(this.min / stepSize) + 1;\n if (maxTicks > 1000) {\n console.warn(`scales.${this.id}.ticks.stepSize: ${stepSize} would result generating up to ${maxTicks} ticks. Limiting to 1000.`);\n maxTicks = 1000;\n }\n } else {\n maxTicks = this.computeTickLimit();\n maxTicksLimit = maxTicksLimit || 11;\n }\n\n if (maxTicksLimit) {\n maxTicks = Math.min(maxTicksLimit, maxTicks);\n }\n\n return maxTicks;\n }\n\n /**\n\t * @protected\n\t */\n computeTickLimit() {\n return Number.POSITIVE_INFINITY;\n }\n\n buildTicks() {\n const opts = this.options;\n const tickOpts = opts.ticks;\n\n // Figure out what the max number of ticks we can support it is based on the size of\n // the axis area. For now, we say that the minimum tick spacing in pixels must be 40\n // We also limit the maximum number of ticks to 11 which gives a nice 10 squares on\n // the graph. Make sure we always have at least 2 ticks\n let maxTicks = this.getTickLimit();\n maxTicks = Math.max(2, maxTicks);\n\n const numericGeneratorOptions = {\n maxTicks,\n bounds: opts.bounds,\n min: opts.min,\n max: opts.max,\n precision: tickOpts.precision,\n step: tickOpts.stepSize,\n count: tickOpts.count,\n maxDigits: this._maxDigits(),\n horizontal: this.isHorizontal(),\n minRotation: tickOpts.minRotation || 0,\n includeBounds: tickOpts.includeBounds !== false\n };\n const dataRange = this._range || this;\n const ticks = generateTicks(numericGeneratorOptions, dataRange);\n\n // At this point, we need to update our max and min given the tick values,\n // since we probably have expanded the range of the scale\n if (opts.bounds === 'ticks') {\n _setMinAndMaxByKey(ticks, this, 'value');\n }\n\n if (opts.reverse) {\n ticks.reverse();\n\n this.start = this.max;\n this.end = this.min;\n } else {\n this.start = this.min;\n this.end = this.max;\n }\n\n return ticks;\n }\n\n /**\n\t * @protected\n\t */\n configure() {\n const ticks = this.ticks;\n let start = this.min;\n let end = this.max;\n\n super.configure();\n\n if (this.options.offset && ticks.length) {\n const offset = (end - start) / Math.max(ticks.length - 1, 1) / 2;\n start -= offset;\n end += offset;\n }\n this._startValue = start;\n this._endValue = end;\n this._valueRange = end - start;\n }\n\n getLabelForValue(value) {\n return formatNumber(value, this.chart.options.locale, this.options.ticks.format);\n }\n}\n","import {isFinite} from '../helpers/helpers.core.js';\nimport LinearScaleBase from './scale.linearbase.js';\nimport Ticks from '../core/core.ticks.js';\nimport {toRadians} from '../helpers/index.js';\n\nexport default class LinearScale extends LinearScaleBase {\n\n static id = 'linear';\n\n /**\n * @type {any}\n */\n static defaults = {\n ticks: {\n callback: Ticks.formatters.numeric\n }\n };\n\n\n determineDataLimits() {\n const {min, max} = this.getMinMax(true);\n\n this.min = isFinite(min) ? min : 0;\n this.max = isFinite(max) ? max : 1;\n\n // Common base implementation to handle min, max, beginAtZero\n this.handleTickRangeOptions();\n }\n\n /**\n\t * Returns the maximum number of ticks based on the scale dimension\n\t * @protected\n \t */\n computeTickLimit() {\n const horizontal = this.isHorizontal();\n const length = horizontal ? this.width : this.height;\n const minRotation = toRadians(this.options.ticks.minRotation);\n const ratio = (horizontal ? Math.sin(minRotation) : Math.cos(minRotation)) || 0.001;\n const tickFont = this._resolveTickFontOptions(0);\n return Math.ceil(length / Math.min(40, tickFont.lineHeight / ratio));\n }\n\n // Utils\n getPixelForValue(value) {\n return value === null ? NaN : this.getPixelForDecimal((value - this._startValue) / this._valueRange);\n }\n\n getValueForPixel(pixel) {\n return this._startValue + this.getDecimalForPixel(pixel) * this._valueRange;\n }\n}\n","import {finiteOrDefault, isFinite} from '../helpers/helpers.core.js';\nimport {formatNumber} from '../helpers/helpers.intl.js';\nimport {_setMinAndMaxByKey, log10} from '../helpers/helpers.math.js';\nimport Scale from '../core/core.scale.js';\nimport LinearScaleBase from './scale.linearbase.js';\nimport Ticks from '../core/core.ticks.js';\n\nconst log10Floor = v => Math.floor(log10(v));\nconst changeExponent = (v, m) => Math.pow(10, log10Floor(v) + m);\n\nfunction isMajor(tickVal) {\n const remain = tickVal / (Math.pow(10, log10Floor(tickVal)));\n return remain === 1;\n}\n\nfunction steps(min, max, rangeExp) {\n const rangeStep = Math.pow(10, rangeExp);\n const start = Math.floor(min / rangeStep);\n const end = Math.ceil(max / rangeStep);\n return end - start;\n}\n\nfunction startExp(min, max) {\n const range = max - min;\n let rangeExp = log10Floor(range);\n while (steps(min, max, rangeExp) > 10) {\n rangeExp++;\n }\n while (steps(min, max, rangeExp) < 10) {\n rangeExp--;\n }\n return Math.min(rangeExp, log10Floor(min));\n}\n\n\n/**\n * Generate a set of logarithmic ticks\n * @param generationOptions the options used to generate the ticks\n * @param dataRange the range of the data\n * @returns {object[]} array of tick objects\n */\nfunction generateTicks(generationOptions, {min, max}) {\n min = finiteOrDefault(generationOptions.min, min);\n const ticks = [];\n const minExp = log10Floor(min);\n let exp = startExp(min, max);\n let precision = exp < 0 ? Math.pow(10, Math.abs(exp)) : 1;\n const stepSize = Math.pow(10, exp);\n const base = minExp > exp ? Math.pow(10, minExp) : 0;\n const start = Math.round((min - base) * precision) / precision;\n const offset = Math.floor((min - base) / stepSize / 10) * stepSize * 10;\n let significand = Math.floor((start - offset) / Math.pow(10, exp));\n let value = finiteOrDefault(generationOptions.min, Math.round((base + offset + significand * Math.pow(10, exp)) * precision) / precision);\n while (value < max) {\n ticks.push({value, major: isMajor(value), significand});\n if (significand >= 10) {\n significand = significand < 15 ? 15 : 20;\n } else {\n significand++;\n }\n if (significand >= 20) {\n exp++;\n significand = 2;\n precision = exp >= 0 ? 1 : precision;\n }\n value = Math.round((base + offset + significand * Math.pow(10, exp)) * precision) / precision;\n }\n const lastTick = finiteOrDefault(generationOptions.max, value);\n ticks.push({value: lastTick, major: isMajor(lastTick), significand});\n\n return ticks;\n}\n\nexport default class LogarithmicScale extends Scale {\n\n static id = 'logarithmic';\n\n /**\n * @type {any}\n */\n static defaults = {\n ticks: {\n callback: Ticks.formatters.logarithmic,\n major: {\n enabled: true\n }\n }\n };\n\n\n constructor(cfg) {\n super(cfg);\n\n /** @type {number} */\n this.start = undefined;\n /** @type {number} */\n this.end = undefined;\n /** @type {number} */\n this._startValue = undefined;\n this._valueRange = 0;\n }\n\n parse(raw, index) {\n const value = LinearScaleBase.prototype.parse.apply(this, [raw, index]);\n if (value === 0) {\n this._zero = true;\n return undefined;\n }\n return isFinite(value) && value > 0 ? value : null;\n }\n\n determineDataLimits() {\n const {min, max} = this.getMinMax(true);\n\n this.min = isFinite(min) ? Math.max(0, min) : null;\n this.max = isFinite(max) ? Math.max(0, max) : null;\n\n if (this.options.beginAtZero) {\n this._zero = true;\n }\n\n // if data has `0` in it or `beginAtZero` is true, min (non zero) value is at bottom\n // of scale, and it does not equal suggestedMin, lower the min bound by one exp.\n if (this._zero && this.min !== this._suggestedMin && !isFinite(this._userMin)) {\n this.min = min === changeExponent(this.min, 0) ? changeExponent(this.min, -1) : changeExponent(this.min, 0);\n }\n\n this.handleTickRangeOptions();\n }\n\n handleTickRangeOptions() {\n const {minDefined, maxDefined} = this.getUserBounds();\n let min = this.min;\n let max = this.max;\n\n const setMin = v => (min = minDefined ? min : v);\n const setMax = v => (max = maxDefined ? max : v);\n\n if (min === max) {\n if (min <= 0) { // includes null\n setMin(1);\n setMax(10);\n } else {\n setMin(changeExponent(min, -1));\n setMax(changeExponent(max, +1));\n }\n }\n if (min <= 0) {\n setMin(changeExponent(max, -1));\n }\n if (max <= 0) {\n\n setMax(changeExponent(min, +1));\n }\n\n this.min = min;\n this.max = max;\n }\n\n buildTicks() {\n const opts = this.options;\n\n const generationOptions = {\n min: this._userMin,\n max: this._userMax\n };\n const ticks = generateTicks(generationOptions, this);\n\n // At this point, we need to update our max and min given the tick values,\n // since we probably have expanded the range of the scale\n if (opts.bounds === 'ticks') {\n _setMinAndMaxByKey(ticks, this, 'value');\n }\n\n if (opts.reverse) {\n ticks.reverse();\n\n this.start = this.max;\n this.end = this.min;\n } else {\n this.start = this.min;\n this.end = this.max;\n }\n\n return ticks;\n }\n\n /**\n\t * @param {number} value\n\t * @return {string}\n\t */\n getLabelForValue(value) {\n return value === undefined\n ? '0'\n : formatNumber(value, this.chart.options.locale, this.options.ticks.format);\n }\n\n /**\n\t * @protected\n\t */\n configure() {\n const start = this.min;\n\n super.configure();\n\n this._startValue = log10(start);\n this._valueRange = log10(this.max) - log10(start);\n }\n\n getPixelForValue(value) {\n if (value === undefined || value === 0) {\n value = this.min;\n }\n if (value === null || isNaN(value)) {\n return NaN;\n }\n return this.getPixelForDecimal(value === this.min\n ? 0\n : (log10(value) - this._startValue) / this._valueRange);\n }\n\n getValueForPixel(pixel) {\n const decimal = this.getDecimalForPixel(pixel);\n return Math.pow(10, this._startValue + decimal * this._valueRange);\n }\n}\n","import defaults from '../core/core.defaults.js';\nimport {_longestText, addRoundedRectPath, renderText, _isPointInArea} from '../helpers/helpers.canvas.js';\nimport {HALF_PI, TAU, toDegrees, toRadians, _normalizeAngle, PI} from '../helpers/helpers.math.js';\nimport LinearScaleBase from './scale.linearbase.js';\nimport Ticks from '../core/core.ticks.js';\nimport {valueOrDefault, isArray, isFinite, callback as callCallback, isNullOrUndef} from '../helpers/helpers.core.js';\nimport {createContext, toFont, toPadding, toTRBLCorners} from '../helpers/helpers.options.js';\n\nfunction getTickBackdropHeight(opts) {\n const tickOpts = opts.ticks;\n\n if (tickOpts.display && opts.display) {\n const padding = toPadding(tickOpts.backdropPadding);\n return valueOrDefault(tickOpts.font && tickOpts.font.size, defaults.font.size) + padding.height;\n }\n return 0;\n}\n\nfunction measureLabelSize(ctx, font, label) {\n label = isArray(label) ? label : [label];\n return {\n w: _longestText(ctx, font.string, label),\n h: label.length * font.lineHeight\n };\n}\n\nfunction determineLimits(angle, pos, size, min, max) {\n if (angle === min || angle === max) {\n return {\n start: pos - (size / 2),\n end: pos + (size / 2)\n };\n } else if (angle < min || angle > max) {\n return {\n start: pos - size,\n end: pos\n };\n }\n\n return {\n start: pos,\n end: pos + size\n };\n}\n\n/**\n * Helper function to fit a radial linear scale with point labels\n */\nfunction fitWithPointLabels(scale) {\n\n // Right, this is really confusing and there is a lot of maths going on here\n // The gist of the problem is here: https://gist.github.com/nnnick/696cc9c55f4b0beb8fe9\n //\n // Reaction: https://dl.dropboxusercontent.com/u/34601363/toomuchscience.gif\n //\n // Solution:\n //\n // We assume the radius of the polygon is half the size of the canvas at first\n // at each index we check if the text overlaps.\n //\n // Where it does, we store that angle and that index.\n //\n // After finding the largest index and angle we calculate how much we need to remove\n // from the shape radius to move the point inwards by that x.\n //\n // We average the left and right distances to get the maximum shape radius that can fit in the box\n // along with labels.\n //\n // Once we have that, we can find the centre point for the chart, by taking the x text protrusion\n // on each side, removing that from the size, halving it and adding the left x protrusion width.\n //\n // This will mean we have a shape fitted to the canvas, as large as it can be with the labels\n // and position it in the most space efficient manner\n //\n // https://dl.dropboxusercontent.com/u/34601363/yeahscience.gif\n\n // Get maximum radius of the polygon. Either half the height (minus the text width) or half the width.\n // Use this to calculate the offset + change. - Make sure L/R protrusion is at least 0 to stop issues with centre points\n const orig = {\n l: scale.left + scale._padding.left,\n r: scale.right - scale._padding.right,\n t: scale.top + scale._padding.top,\n b: scale.bottom - scale._padding.bottom\n };\n const limits = Object.assign({}, orig);\n const labelSizes = [];\n const padding = [];\n const valueCount = scale._pointLabels.length;\n const pointLabelOpts = scale.options.pointLabels;\n const additionalAngle = pointLabelOpts.centerPointLabels ? PI / valueCount : 0;\n\n for (let i = 0; i < valueCount; i++) {\n const opts = pointLabelOpts.setContext(scale.getPointLabelContext(i));\n padding[i] = opts.padding;\n const pointPosition = scale.getPointPosition(i, scale.drawingArea + padding[i], additionalAngle);\n const plFont = toFont(opts.font);\n const textSize = measureLabelSize(scale.ctx, plFont, scale._pointLabels[i]);\n labelSizes[i] = textSize;\n\n const angleRadians = _normalizeAngle(scale.getIndexAngle(i) + additionalAngle);\n const angle = Math.round(toDegrees(angleRadians));\n const hLimits = determineLimits(angle, pointPosition.x, textSize.w, 0, 180);\n const vLimits = determineLimits(angle, pointPosition.y, textSize.h, 90, 270);\n updateLimits(limits, orig, angleRadians, hLimits, vLimits);\n }\n\n scale.setCenterPoint(\n orig.l - limits.l,\n limits.r - orig.r,\n orig.t - limits.t,\n limits.b - orig.b\n );\n\n // Now that text size is determined, compute the full positions\n scale._pointLabelItems = buildPointLabelItems(scale, labelSizes, padding);\n}\n\nfunction updateLimits(limits, orig, angle, hLimits, vLimits) {\n const sin = Math.abs(Math.sin(angle));\n const cos = Math.abs(Math.cos(angle));\n let x = 0;\n let y = 0;\n if (hLimits.start < orig.l) {\n x = (orig.l - hLimits.start) / sin;\n limits.l = Math.min(limits.l, orig.l - x);\n } else if (hLimits.end > orig.r) {\n x = (hLimits.end - orig.r) / sin;\n limits.r = Math.max(limits.r, orig.r + x);\n }\n if (vLimits.start < orig.t) {\n y = (orig.t - vLimits.start) / cos;\n limits.t = Math.min(limits.t, orig.t - y);\n } else if (vLimits.end > orig.b) {\n y = (vLimits.end - orig.b) / cos;\n limits.b = Math.max(limits.b, orig.b + y);\n }\n}\n\nfunction createPointLabelItem(scale, index, itemOpts) {\n const outerDistance = scale.drawingArea;\n const {extra, additionalAngle, padding, size} = itemOpts;\n const pointLabelPosition = scale.getPointPosition(index, outerDistance + extra + padding, additionalAngle);\n const angle = Math.round(toDegrees(_normalizeAngle(pointLabelPosition.angle + HALF_PI)));\n const y = yForAngle(pointLabelPosition.y, size.h, angle);\n const textAlign = getTextAlignForAngle(angle);\n const left = leftForTextAlign(pointLabelPosition.x, size.w, textAlign);\n return {\n // if to draw or overlapped\n visible: true,\n\n // Text position\n x: pointLabelPosition.x,\n y,\n\n // Text rendering data\n textAlign,\n\n // Bounding box\n left,\n top: y,\n right: left + size.w,\n bottom: y + size.h\n };\n}\n\nfunction isNotOverlapped(item, area) {\n if (!area) {\n return true;\n }\n const {left, top, right, bottom} = item;\n const apexesInArea = _isPointInArea({x: left, y: top}, area) || _isPointInArea({x: left, y: bottom}, area) ||\n _isPointInArea({x: right, y: top}, area) || _isPointInArea({x: right, y: bottom}, area);\n return !apexesInArea;\n}\n\nfunction buildPointLabelItems(scale, labelSizes, padding) {\n const items = [];\n const valueCount = scale._pointLabels.length;\n const opts = scale.options;\n const {centerPointLabels, display} = opts.pointLabels;\n const itemOpts = {\n extra: getTickBackdropHeight(opts) / 2,\n additionalAngle: centerPointLabels ? PI / valueCount : 0\n };\n let area;\n\n for (let i = 0; i < valueCount; i++) {\n itemOpts.padding = padding[i];\n itemOpts.size = labelSizes[i];\n\n const item = createPointLabelItem(scale, i, itemOpts);\n items.push(item);\n if (display === 'auto') {\n item.visible = isNotOverlapped(item, area);\n if (item.visible) {\n area = item;\n }\n }\n }\n return items;\n}\n\nfunction getTextAlignForAngle(angle) {\n if (angle === 0 || angle === 180) {\n return 'center';\n } else if (angle < 180) {\n return 'left';\n }\n\n return 'right';\n}\n\nfunction leftForTextAlign(x, w, align) {\n if (align === 'right') {\n x -= w;\n } else if (align === 'center') {\n x -= (w / 2);\n }\n return x;\n}\n\nfunction yForAngle(y, h, angle) {\n if (angle === 90 || angle === 270) {\n y -= (h / 2);\n } else if (angle > 270 || angle < 90) {\n y -= h;\n }\n return y;\n}\n\nfunction drawPointLabelBox(ctx, opts, item) {\n const {left, top, right, bottom} = item;\n const {backdropColor} = opts;\n\n if (!isNullOrUndef(backdropColor)) {\n const borderRadius = toTRBLCorners(opts.borderRadius);\n const padding = toPadding(opts.backdropPadding);\n ctx.fillStyle = backdropColor;\n\n const backdropLeft = left - padding.left;\n const backdropTop = top - padding.top;\n const backdropWidth = right - left + padding.width;\n const backdropHeight = bottom - top + padding.height;\n\n if (Object.values(borderRadius).some(v => v !== 0)) {\n ctx.beginPath();\n addRoundedRectPath(ctx, {\n x: backdropLeft,\n y: backdropTop,\n w: backdropWidth,\n h: backdropHeight,\n radius: borderRadius,\n });\n ctx.fill();\n } else {\n ctx.fillRect(backdropLeft, backdropTop, backdropWidth, backdropHeight);\n }\n }\n}\n\nfunction drawPointLabels(scale, labelCount) {\n const {ctx, options: {pointLabels}} = scale;\n\n for (let i = labelCount - 1; i >= 0; i--) {\n const item = scale._pointLabelItems[i];\n if (!item.visible) {\n // overlapping\n continue;\n }\n const optsAtIndex = pointLabels.setContext(scale.getPointLabelContext(i));\n drawPointLabelBox(ctx, optsAtIndex, item);\n const plFont = toFont(optsAtIndex.font);\n const {x, y, textAlign} = item;\n\n renderText(\n ctx,\n scale._pointLabels[i],\n x,\n y + (plFont.lineHeight / 2),\n plFont,\n {\n color: optsAtIndex.color,\n textAlign: textAlign,\n textBaseline: 'middle'\n }\n );\n }\n}\n\nfunction pathRadiusLine(scale, radius, circular, labelCount) {\n const {ctx} = scale;\n if (circular) {\n // Draw circular arcs between the points\n ctx.arc(scale.xCenter, scale.yCenter, radius, 0, TAU);\n } else {\n // Draw straight lines connecting each index\n let pointPosition = scale.getPointPosition(0, radius);\n ctx.moveTo(pointPosition.x, pointPosition.y);\n\n for (let i = 1; i < labelCount; i++) {\n pointPosition = scale.getPointPosition(i, radius);\n ctx.lineTo(pointPosition.x, pointPosition.y);\n }\n }\n}\n\nfunction drawRadiusLine(scale, gridLineOpts, radius, labelCount, borderOpts) {\n const ctx = scale.ctx;\n const circular = gridLineOpts.circular;\n\n const {color, lineWidth} = gridLineOpts;\n\n if ((!circular && !labelCount) || !color || !lineWidth || radius < 0) {\n return;\n }\n\n ctx.save();\n ctx.strokeStyle = color;\n ctx.lineWidth = lineWidth;\n ctx.setLineDash(borderOpts.dash);\n ctx.lineDashOffset = borderOpts.dashOffset;\n\n ctx.beginPath();\n pathRadiusLine(scale, radius, circular, labelCount);\n ctx.closePath();\n ctx.stroke();\n ctx.restore();\n}\n\nfunction createPointLabelContext(parent, index, label) {\n return createContext(parent, {\n label,\n index,\n type: 'pointLabel'\n });\n}\n\nexport default class RadialLinearScale extends LinearScaleBase {\n\n static id = 'radialLinear';\n\n /**\n * @type {any}\n */\n static defaults = {\n display: true,\n\n // Boolean - Whether to animate scaling the chart from the centre\n animate: true,\n position: 'chartArea',\n\n angleLines: {\n display: true,\n lineWidth: 1,\n borderDash: [],\n borderDashOffset: 0.0\n },\n\n grid: {\n circular: false\n },\n\n startAngle: 0,\n\n // label settings\n ticks: {\n // Boolean - Show a backdrop to the scale label\n showLabelBackdrop: true,\n\n callback: Ticks.formatters.numeric\n },\n\n pointLabels: {\n backdropColor: undefined,\n\n // Number - The backdrop padding above & below the label in pixels\n backdropPadding: 2,\n\n // Boolean - if true, show point labels\n display: true,\n\n // Number - Point label font size in pixels\n font: {\n size: 10\n },\n\n // Function - Used to convert point labels\n callback(label) {\n return label;\n },\n\n // Number - Additionl padding between scale and pointLabel\n padding: 5,\n\n // Boolean - if true, center point labels to slices in polar chart\n centerPointLabels: false\n }\n };\n\n static defaultRoutes = {\n 'angleLines.color': 'borderColor',\n 'pointLabels.color': 'color',\n 'ticks.color': 'color'\n };\n\n static descriptors = {\n angleLines: {\n _fallback: 'grid'\n }\n };\n\n constructor(cfg) {\n super(cfg);\n\n /** @type {number} */\n this.xCenter = undefined;\n /** @type {number} */\n this.yCenter = undefined;\n /** @type {number} */\n this.drawingArea = undefined;\n /** @type {string[]} */\n this._pointLabels = [];\n this._pointLabelItems = [];\n }\n\n setDimensions() {\n // Set the unconstrained dimension before label rotation\n const padding = this._padding = toPadding(getTickBackdropHeight(this.options) / 2);\n const w = this.width = this.maxWidth - padding.width;\n const h = this.height = this.maxHeight - padding.height;\n this.xCenter = Math.floor(this.left + w / 2 + padding.left);\n this.yCenter = Math.floor(this.top + h / 2 + padding.top);\n this.drawingArea = Math.floor(Math.min(w, h) / 2);\n }\n\n determineDataLimits() {\n const {min, max} = this.getMinMax(false);\n\n this.min = isFinite(min) && !isNaN(min) ? min : 0;\n this.max = isFinite(max) && !isNaN(max) ? max : 0;\n\n // Common base implementation to handle min, max, beginAtZero\n this.handleTickRangeOptions();\n }\n\n /**\n\t * Returns the maximum number of ticks based on the scale dimension\n\t * @protected\n\t */\n computeTickLimit() {\n return Math.ceil(this.drawingArea / getTickBackdropHeight(this.options));\n }\n\n generateTickLabels(ticks) {\n LinearScaleBase.prototype.generateTickLabels.call(this, ticks);\n\n // Point labels\n this._pointLabels = this.getLabels()\n .map((value, index) => {\n const label = callCallback(this.options.pointLabels.callback, [value, index], this);\n return label || label === 0 ? label : '';\n })\n .filter((v, i) => this.chart.getDataVisibility(i));\n }\n\n fit() {\n const opts = this.options;\n\n if (opts.display && opts.pointLabels.display) {\n fitWithPointLabels(this);\n } else {\n this.setCenterPoint(0, 0, 0, 0);\n }\n }\n\n setCenterPoint(leftMovement, rightMovement, topMovement, bottomMovement) {\n this.xCenter += Math.floor((leftMovement - rightMovement) / 2);\n this.yCenter += Math.floor((topMovement - bottomMovement) / 2);\n this.drawingArea -= Math.min(this.drawingArea / 2, Math.max(leftMovement, rightMovement, topMovement, bottomMovement));\n }\n\n getIndexAngle(index) {\n const angleMultiplier = TAU / (this._pointLabels.length || 1);\n const startAngle = this.options.startAngle || 0;\n\n return _normalizeAngle(index * angleMultiplier + toRadians(startAngle));\n }\n\n getDistanceFromCenterForValue(value) {\n if (isNullOrUndef(value)) {\n return NaN;\n }\n\n // Take into account half font size + the yPadding of the top value\n const scalingFactor = this.drawingArea / (this.max - this.min);\n if (this.options.reverse) {\n return (this.max - value) * scalingFactor;\n }\n return (value - this.min) * scalingFactor;\n }\n\n getValueForDistanceFromCenter(distance) {\n if (isNullOrUndef(distance)) {\n return NaN;\n }\n\n const scaledDistance = distance / (this.drawingArea / (this.max - this.min));\n return this.options.reverse ? this.max - scaledDistance : this.min + scaledDistance;\n }\n\n getPointLabelContext(index) {\n const pointLabels = this._pointLabels || [];\n\n if (index >= 0 && index < pointLabels.length) {\n const pointLabel = pointLabels[index];\n return createPointLabelContext(this.getContext(), index, pointLabel);\n }\n }\n\n getPointPosition(index, distanceFromCenter, additionalAngle = 0) {\n const angle = this.getIndexAngle(index) - HALF_PI + additionalAngle;\n return {\n x: Math.cos(angle) * distanceFromCenter + this.xCenter,\n y: Math.sin(angle) * distanceFromCenter + this.yCenter,\n angle\n };\n }\n\n getPointPositionForValue(index, value) {\n return this.getPointPosition(index, this.getDistanceFromCenterForValue(value));\n }\n\n getBasePosition(index) {\n return this.getPointPositionForValue(index || 0, this.getBaseValue());\n }\n\n getPointLabelPosition(index) {\n const {left, top, right, bottom} = this._pointLabelItems[index];\n return {\n left,\n top,\n right,\n bottom,\n };\n }\n\n /**\n\t * @protected\n\t */\n drawBackground() {\n const {backgroundColor, grid: {circular}} = this.options;\n if (backgroundColor) {\n const ctx = this.ctx;\n ctx.save();\n ctx.beginPath();\n pathRadiusLine(this, this.getDistanceFromCenterForValue(this._endValue), circular, this._pointLabels.length);\n ctx.closePath();\n ctx.fillStyle = backgroundColor;\n ctx.fill();\n ctx.restore();\n }\n }\n\n /**\n\t * @protected\n\t */\n drawGrid() {\n const ctx = this.ctx;\n const opts = this.options;\n const {angleLines, grid, border} = opts;\n const labelCount = this._pointLabels.length;\n\n let i, offset, position;\n\n if (opts.pointLabels.display) {\n drawPointLabels(this, labelCount);\n }\n\n if (grid.display) {\n this.ticks.forEach((tick, index) => {\n if (index !== 0) {\n offset = this.getDistanceFromCenterForValue(tick.value);\n const context = this.getContext(index);\n const optsAtIndex = grid.setContext(context);\n const optsAtIndexBorder = border.setContext(context);\n\n drawRadiusLine(this, optsAtIndex, offset, labelCount, optsAtIndexBorder);\n }\n });\n }\n\n if (angleLines.display) {\n ctx.save();\n\n for (i = labelCount - 1; i >= 0; i--) {\n const optsAtIndex = angleLines.setContext(this.getPointLabelContext(i));\n const {color, lineWidth} = optsAtIndex;\n\n if (!lineWidth || !color) {\n continue;\n }\n\n ctx.lineWidth = lineWidth;\n ctx.strokeStyle = color;\n\n ctx.setLineDash(optsAtIndex.borderDash);\n ctx.lineDashOffset = optsAtIndex.borderDashOffset;\n\n offset = this.getDistanceFromCenterForValue(opts.ticks.reverse ? this.min : this.max);\n position = this.getPointPosition(i, offset);\n ctx.beginPath();\n ctx.moveTo(this.xCenter, this.yCenter);\n ctx.lineTo(position.x, position.y);\n ctx.stroke();\n }\n\n ctx.restore();\n }\n }\n\n /**\n\t * @protected\n\t */\n drawBorder() {}\n\n /**\n\t * @protected\n\t */\n drawLabels() {\n const ctx = this.ctx;\n const opts = this.options;\n const tickOpts = opts.ticks;\n\n if (!tickOpts.display) {\n return;\n }\n\n const startAngle = this.getIndexAngle(0);\n let offset, width;\n\n ctx.save();\n ctx.translate(this.xCenter, this.yCenter);\n ctx.rotate(startAngle);\n ctx.textAlign = 'center';\n ctx.textBaseline = 'middle';\n\n this.ticks.forEach((tick, index) => {\n if (index === 0 && !opts.reverse) {\n return;\n }\n\n const optsAtIndex = tickOpts.setContext(this.getContext(index));\n const tickFont = toFont(optsAtIndex.font);\n offset = this.getDistanceFromCenterForValue(this.ticks[index].value);\n\n if (optsAtIndex.showLabelBackdrop) {\n ctx.font = tickFont.string;\n width = ctx.measureText(tick.label).width;\n ctx.fillStyle = optsAtIndex.backdropColor;\n\n const padding = toPadding(optsAtIndex.backdropPadding);\n ctx.fillRect(\n -width / 2 - padding.left,\n -offset - tickFont.size / 2 - padding.top,\n width + padding.width,\n tickFont.size + padding.height\n );\n }\n\n renderText(ctx, tick.label, 0, -offset, tickFont, {\n color: optsAtIndex.color,\n strokeColor: optsAtIndex.textStrokeColor,\n strokeWidth: optsAtIndex.textStrokeWidth,\n });\n });\n\n ctx.restore();\n }\n\n /**\n\t * @protected\n\t */\n drawTitle() {}\n}\n","import adapters from '../core/core.adapters.js';\nimport {callback as call, isFinite, isNullOrUndef, mergeIf, valueOrDefault} from '../helpers/helpers.core.js';\nimport {toRadians, isNumber, _limitValue} from '../helpers/helpers.math.js';\nimport Scale from '../core/core.scale.js';\nimport {_arrayUnique, _filterBetween, _lookup} from '../helpers/helpers.collection.js';\n\n/**\n * @typedef { import('../core/core.adapters.js').TimeUnit } Unit\n * @typedef {{common: boolean, size: number, steps?: number}} Interval\n * @typedef { import('../core/core.adapters.js').DateAdapter } DateAdapter\n */\n\n/**\n * @type {Object}\n */\nconst INTERVALS = {\n millisecond: {common: true, size: 1, steps: 1000},\n second: {common: true, size: 1000, steps: 60},\n minute: {common: true, size: 60000, steps: 60},\n hour: {common: true, size: 3600000, steps: 24},\n day: {common: true, size: 86400000, steps: 30},\n week: {common: false, size: 604800000, steps: 4},\n month: {common: true, size: 2.628e9, steps: 12},\n quarter: {common: false, size: 7.884e9, steps: 4},\n year: {common: true, size: 3.154e10}\n};\n\n/**\n * @type {Unit[]}\n */\nconst UNITS = /** @type Unit[] */ /* #__PURE__ */ (Object.keys(INTERVALS));\n\n/**\n * @param {number} a\n * @param {number} b\n */\nfunction sorter(a, b) {\n return a - b;\n}\n\n/**\n * @param {TimeScale} scale\n * @param {*} input\n * @return {number}\n */\nfunction parse(scale, input) {\n if (isNullOrUndef(input)) {\n return null;\n }\n\n const adapter = scale._adapter;\n const {parser, round, isoWeekday} = scale._parseOpts;\n let value = input;\n\n if (typeof parser === 'function') {\n value = parser(value);\n }\n\n // Only parse if it's not a timestamp already\n if (!isFinite(value)) {\n value = typeof parser === 'string'\n ? adapter.parse(value, /** @type {Unit} */ (parser))\n : adapter.parse(value);\n }\n\n if (value === null) {\n return null;\n }\n\n if (round) {\n value = round === 'week' && (isNumber(isoWeekday) || isoWeekday === true)\n ? adapter.startOf(value, 'isoWeek', isoWeekday)\n : adapter.startOf(value, round);\n }\n\n return +value;\n}\n\n/**\n * Figures out what unit results in an appropriate number of auto-generated ticks\n * @param {Unit} minUnit\n * @param {number} min\n * @param {number} max\n * @param {number} capacity\n * @return {object}\n */\nfunction determineUnitForAutoTicks(minUnit, min, max, capacity) {\n const ilen = UNITS.length;\n\n for (let i = UNITS.indexOf(minUnit); i < ilen - 1; ++i) {\n const interval = INTERVALS[UNITS[i]];\n const factor = interval.steps ? interval.steps : Number.MAX_SAFE_INTEGER;\n\n if (interval.common && Math.ceil((max - min) / (factor * interval.size)) <= capacity) {\n return UNITS[i];\n }\n }\n\n return UNITS[ilen - 1];\n}\n\n/**\n * Figures out what unit to format a set of ticks with\n * @param {TimeScale} scale\n * @param {number} numTicks\n * @param {Unit} minUnit\n * @param {number} min\n * @param {number} max\n * @return {Unit}\n */\nfunction determineUnitForFormatting(scale, numTicks, minUnit, min, max) {\n for (let i = UNITS.length - 1; i >= UNITS.indexOf(minUnit); i--) {\n const unit = UNITS[i];\n if (INTERVALS[unit].common && scale._adapter.diff(max, min, unit) >= numTicks - 1) {\n return unit;\n }\n }\n\n return UNITS[minUnit ? UNITS.indexOf(minUnit) : 0];\n}\n\n/**\n * @param {Unit} unit\n * @return {object}\n */\nfunction determineMajorUnit(unit) {\n for (let i = UNITS.indexOf(unit) + 1, ilen = UNITS.length; i < ilen; ++i) {\n if (INTERVALS[UNITS[i]].common) {\n return UNITS[i];\n }\n }\n}\n\n/**\n * @param {object} ticks\n * @param {number} time\n * @param {number[]} [timestamps] - if defined, snap to these timestamps\n */\nfunction addTick(ticks, time, timestamps) {\n if (!timestamps) {\n ticks[time] = true;\n } else if (timestamps.length) {\n const {lo, hi} = _lookup(timestamps, time);\n const timestamp = timestamps[lo] >= time ? timestamps[lo] : timestamps[hi];\n ticks[timestamp] = true;\n }\n}\n\n/**\n * @param {TimeScale} scale\n * @param {object[]} ticks\n * @param {object} map\n * @param {Unit} majorUnit\n * @return {object[]}\n */\nfunction setMajorTicks(scale, ticks, map, majorUnit) {\n const adapter = scale._adapter;\n const first = +adapter.startOf(ticks[0].value, majorUnit);\n const last = ticks[ticks.length - 1].value;\n let major, index;\n\n for (major = first; major <= last; major = +adapter.add(major, 1, majorUnit)) {\n index = map[major];\n if (index >= 0) {\n ticks[index].major = true;\n }\n }\n return ticks;\n}\n\n/**\n * @param {TimeScale} scale\n * @param {number[]} values\n * @param {Unit|undefined} [majorUnit]\n * @return {object[]}\n */\nfunction ticksFromTimestamps(scale, values, majorUnit) {\n const ticks = [];\n /** @type {Object} */\n const map = {};\n const ilen = values.length;\n let i, value;\n\n for (i = 0; i < ilen; ++i) {\n value = values[i];\n map[value] = i;\n\n ticks.push({\n value,\n major: false\n });\n }\n\n // We set the major ticks separately from the above loop because calling startOf for every tick\n // is expensive when there is a large number of ticks\n return (ilen === 0 || !majorUnit) ? ticks : setMajorTicks(scale, ticks, map, majorUnit);\n}\n\nexport default class TimeScale extends Scale {\n\n static id = 'time';\n\n /**\n * @type {any}\n */\n static defaults = {\n /**\n * Scale boundary strategy (bypassed by min/max time options)\n * - `data`: make sure data are fully visible, ticks outside are removed\n * - `ticks`: make sure ticks are fully visible, data outside are truncated\n * @see https://github.com/chartjs/Chart.js/pull/4556\n * @since 2.7.0\n */\n bounds: 'data',\n\n adapters: {},\n time: {\n parser: false, // false == a pattern string from or a custom callback that converts its argument to a timestamp\n unit: false, // false == automatic or override with week, month, year, etc.\n round: false, // none, or override with week, month, year, etc.\n isoWeekday: false, // override week start day\n minUnit: 'millisecond',\n displayFormats: {}\n },\n ticks: {\n /**\n * Ticks generation input values:\n * - 'auto': generates \"optimal\" ticks based on scale size and time options.\n * - 'data': generates ticks from data (including labels from data {t|x|y} objects).\n * - 'labels': generates ticks from user given `data.labels` values ONLY.\n * @see https://github.com/chartjs/Chart.js/pull/4507\n * @since 2.7.0\n */\n source: 'auto',\n\n callback: false,\n\n major: {\n enabled: false\n }\n }\n };\n\n /**\n\t * @param {object} props\n\t */\n constructor(props) {\n super(props);\n\n /** @type {{data: number[], labels: number[], all: number[]}} */\n this._cache = {\n data: [],\n labels: [],\n all: []\n };\n\n /** @type {Unit} */\n this._unit = 'day';\n /** @type {Unit=} */\n this._majorUnit = undefined;\n this._offsets = {};\n this._normalized = false;\n this._parseOpts = undefined;\n }\n\n init(scaleOpts, opts = {}) {\n const time = scaleOpts.time || (scaleOpts.time = {});\n /** @type {DateAdapter} */\n const adapter = this._adapter = new adapters._date(scaleOpts.adapters.date);\n\n adapter.init(opts);\n\n // Backward compatibility: before introducing adapter, `displayFormats` was\n // supposed to contain *all* unit/string pairs but this can't be resolved\n // when loading the scale (adapters are loaded afterward), so let's populate\n // missing formats on update\n mergeIf(time.displayFormats, adapter.formats());\n\n this._parseOpts = {\n parser: time.parser,\n round: time.round,\n isoWeekday: time.isoWeekday\n };\n\n super.init(scaleOpts);\n\n this._normalized = opts.normalized;\n }\n\n /**\n\t * @param {*} raw\n\t * @param {number?} [index]\n\t * @return {number}\n\t */\n parse(raw, index) { // eslint-disable-line no-unused-vars\n if (raw === undefined) {\n return null;\n }\n return parse(this, raw);\n }\n\n beforeLayout() {\n super.beforeLayout();\n this._cache = {\n data: [],\n labels: [],\n all: []\n };\n }\n\n determineDataLimits() {\n const options = this.options;\n const adapter = this._adapter;\n const unit = options.time.unit || 'day';\n // eslint-disable-next-line prefer-const\n let {min, max, minDefined, maxDefined} = this.getUserBounds();\n\n /**\n\t\t * @param {object} bounds\n\t\t */\n function _applyBounds(bounds) {\n if (!minDefined && !isNaN(bounds.min)) {\n min = Math.min(min, bounds.min);\n }\n if (!maxDefined && !isNaN(bounds.max)) {\n max = Math.max(max, bounds.max);\n }\n }\n\n // If we have user provided `min` and `max` labels / data bounds can be ignored\n if (!minDefined || !maxDefined) {\n // Labels are always considered, when user did not force bounds\n _applyBounds(this._getLabelBounds());\n\n // If `bounds` is `'ticks'` and `ticks.source` is `'labels'`,\n // data bounds are ignored (and don't need to be determined)\n if (options.bounds !== 'ticks' || options.ticks.source !== 'labels') {\n _applyBounds(this.getMinMax(false));\n }\n }\n\n min = isFinite(min) && !isNaN(min) ? min : +adapter.startOf(Date.now(), unit);\n max = isFinite(max) && !isNaN(max) ? max : +adapter.endOf(Date.now(), unit) + 1;\n\n // Make sure that max is strictly higher than min (required by the timeseries lookup table)\n this.min = Math.min(min, max - 1);\n this.max = Math.max(min + 1, max);\n }\n\n /**\n\t * @private\n\t */\n _getLabelBounds() {\n const arr = this.getLabelTimestamps();\n let min = Number.POSITIVE_INFINITY;\n let max = Number.NEGATIVE_INFINITY;\n\n if (arr.length) {\n min = arr[0];\n max = arr[arr.length - 1];\n }\n return {min, max};\n }\n\n /**\n\t * @return {object[]}\n\t */\n buildTicks() {\n const options = this.options;\n const timeOpts = options.time;\n const tickOpts = options.ticks;\n const timestamps = tickOpts.source === 'labels' ? this.getLabelTimestamps() : this._generate();\n\n if (options.bounds === 'ticks' && timestamps.length) {\n this.min = this._userMin || timestamps[0];\n this.max = this._userMax || timestamps[timestamps.length - 1];\n }\n\n const min = this.min;\n const max = this.max;\n\n const ticks = _filterBetween(timestamps, min, max);\n\n // PRIVATE\n // determineUnitForFormatting relies on the number of ticks so we don't use it when\n // autoSkip is enabled because we don't yet know what the final number of ticks will be\n this._unit = timeOpts.unit || (tickOpts.autoSkip\n ? determineUnitForAutoTicks(timeOpts.minUnit, this.min, this.max, this._getLabelCapacity(min))\n : determineUnitForFormatting(this, ticks.length, timeOpts.minUnit, this.min, this.max));\n this._majorUnit = !tickOpts.major.enabled || this._unit === 'year' ? undefined\n : determineMajorUnit(this._unit);\n this.initOffsets(timestamps);\n\n if (options.reverse) {\n ticks.reverse();\n }\n\n return ticksFromTimestamps(this, ticks, this._majorUnit);\n }\n\n afterAutoSkip() {\n // Offsets for bar charts need to be handled with the auto skipped\n // ticks. Once ticks have been skipped, we re-compute the offsets.\n if (this.options.offsetAfterAutoskip) {\n this.initOffsets(this.ticks.map(tick => +tick.value));\n }\n }\n\n /**\n\t * Returns the start and end offsets from edges in the form of {start, end}\n\t * where each value is a relative width to the scale and ranges between 0 and 1.\n\t * They add extra margins on the both sides by scaling down the original scale.\n\t * Offsets are added when the `offset` option is true.\n\t * @param {number[]} timestamps\n\t * @protected\n\t */\n initOffsets(timestamps = []) {\n let start = 0;\n let end = 0;\n let first, last;\n\n if (this.options.offset && timestamps.length) {\n first = this.getDecimalForValue(timestamps[0]);\n if (timestamps.length === 1) {\n start = 1 - first;\n } else {\n start = (this.getDecimalForValue(timestamps[1]) - first) / 2;\n }\n last = this.getDecimalForValue(timestamps[timestamps.length - 1]);\n if (timestamps.length === 1) {\n end = last;\n } else {\n end = (last - this.getDecimalForValue(timestamps[timestamps.length - 2])) / 2;\n }\n }\n const limit = timestamps.length < 3 ? 0.5 : 0.25;\n start = _limitValue(start, 0, limit);\n end = _limitValue(end, 0, limit);\n\n this._offsets = {start, end, factor: 1 / (start + 1 + end)};\n }\n\n /**\n\t * Generates a maximum of `capacity` timestamps between min and max, rounded to the\n\t * `minor` unit using the given scale time `options`.\n\t * Important: this method can return ticks outside the min and max range, it's the\n\t * responsibility of the calling code to clamp values if needed.\n\t * @protected\n\t */\n _generate() {\n const adapter = this._adapter;\n const min = this.min;\n const max = this.max;\n const options = this.options;\n const timeOpts = options.time;\n // @ts-ignore\n const minor = timeOpts.unit || determineUnitForAutoTicks(timeOpts.minUnit, min, max, this._getLabelCapacity(min));\n const stepSize = valueOrDefault(options.ticks.stepSize, 1);\n const weekday = minor === 'week' ? timeOpts.isoWeekday : false;\n const hasWeekday = isNumber(weekday) || weekday === true;\n const ticks = {};\n let first = min;\n let time, count;\n\n // For 'week' unit, handle the first day of week option\n if (hasWeekday) {\n first = +adapter.startOf(first, 'isoWeek', weekday);\n }\n\n // Align first ticks on unit\n first = +adapter.startOf(first, hasWeekday ? 'day' : minor);\n\n // Prevent browser from freezing in case user options request millions of milliseconds\n if (adapter.diff(max, min, minor) > 100000 * stepSize) {\n throw new Error(min + ' and ' + max + ' are too far apart with stepSize of ' + stepSize + ' ' + minor);\n }\n\n const timestamps = options.ticks.source === 'data' && this.getDataTimestamps();\n for (time = first, count = 0; time < max; time = +adapter.add(time, stepSize, minor), count++) {\n addTick(ticks, time, timestamps);\n }\n\n if (time === max || options.bounds === 'ticks' || count === 1) {\n addTick(ticks, time, timestamps);\n }\n\n // @ts-ignore\n return Object.keys(ticks).sort(sorter).map(x => +x);\n }\n\n /**\n\t * @param {number} value\n\t * @return {string}\n\t */\n getLabelForValue(value) {\n const adapter = this._adapter;\n const timeOpts = this.options.time;\n\n if (timeOpts.tooltipFormat) {\n return adapter.format(value, timeOpts.tooltipFormat);\n }\n return adapter.format(value, timeOpts.displayFormats.datetime);\n }\n\n /**\n\t * @param {number} value\n\t * @param {string|undefined} format\n\t * @return {string}\n\t */\n format(value, format) {\n const options = this.options;\n const formats = options.time.displayFormats;\n const unit = this._unit;\n const fmt = format || formats[unit];\n return this._adapter.format(value, fmt);\n }\n\n /**\n\t * Function to format an individual tick mark\n\t * @param {number} time\n\t * @param {number} index\n\t * @param {object[]} ticks\n\t * @param {string|undefined} [format]\n\t * @return {string}\n\t * @private\n\t */\n _tickFormatFunction(time, index, ticks, format) {\n const options = this.options;\n const formatter = options.ticks.callback;\n\n if (formatter) {\n return call(formatter, [time, index, ticks], this);\n }\n\n const formats = options.time.displayFormats;\n const unit = this._unit;\n const majorUnit = this._majorUnit;\n const minorFormat = unit && formats[unit];\n const majorFormat = majorUnit && formats[majorUnit];\n const tick = ticks[index];\n const major = majorUnit && majorFormat && tick && tick.major;\n\n return this._adapter.format(time, format || (major ? majorFormat : minorFormat));\n }\n\n /**\n\t * @param {object[]} ticks\n\t */\n generateTickLabels(ticks) {\n let i, ilen, tick;\n\n for (i = 0, ilen = ticks.length; i < ilen; ++i) {\n tick = ticks[i];\n tick.label = this._tickFormatFunction(tick.value, i, ticks);\n }\n }\n\n /**\n\t * @param {number} value - Milliseconds since epoch (1 January 1970 00:00:00 UTC)\n\t * @return {number}\n\t */\n getDecimalForValue(value) {\n return value === null ? NaN : (value - this.min) / (this.max - this.min);\n }\n\n /**\n\t * @param {number} value - Milliseconds since epoch (1 January 1970 00:00:00 UTC)\n\t * @return {number}\n\t */\n getPixelForValue(value) {\n const offsets = this._offsets;\n const pos = this.getDecimalForValue(value);\n return this.getPixelForDecimal((offsets.start + pos) * offsets.factor);\n }\n\n /**\n\t * @param {number} pixel\n\t * @return {number}\n\t */\n getValueForPixel(pixel) {\n const offsets = this._offsets;\n const pos = this.getDecimalForPixel(pixel) / offsets.factor - offsets.end;\n return this.min + pos * (this.max - this.min);\n }\n\n /**\n\t * @param {string} label\n\t * @return {{w:number, h:number}}\n\t * @private\n\t */\n _getLabelSize(label) {\n const ticksOpts = this.options.ticks;\n const tickLabelWidth = this.ctx.measureText(label).width;\n const angle = toRadians(this.isHorizontal() ? ticksOpts.maxRotation : ticksOpts.minRotation);\n const cosRotation = Math.cos(angle);\n const sinRotation = Math.sin(angle);\n const tickFontSize = this._resolveTickFontOptions(0).size;\n\n return {\n w: (tickLabelWidth * cosRotation) + (tickFontSize * sinRotation),\n h: (tickLabelWidth * sinRotation) + (tickFontSize * cosRotation)\n };\n }\n\n /**\n\t * @param {number} exampleTime\n\t * @return {number}\n\t * @private\n\t */\n _getLabelCapacity(exampleTime) {\n const timeOpts = this.options.time;\n const displayFormats = timeOpts.displayFormats;\n\n // pick the longest format (milliseconds) for guesstimation\n const format = displayFormats[timeOpts.unit] || displayFormats.millisecond;\n const exampleLabel = this._tickFormatFunction(exampleTime, 0, ticksFromTimestamps(this, [exampleTime], this._majorUnit), format);\n const size = this._getLabelSize(exampleLabel);\n // subtract 1 - if offset then there's one less label than tick\n // if not offset then one half label padding is added to each end leaving room for one less label\n const capacity = Math.floor(this.isHorizontal() ? this.width / size.w : this.height / size.h) - 1;\n return capacity > 0 ? capacity : 1;\n }\n\n /**\n\t * @protected\n\t */\n getDataTimestamps() {\n let timestamps = this._cache.data || [];\n let i, ilen;\n\n if (timestamps.length) {\n return timestamps;\n }\n\n const metas = this.getMatchingVisibleMetas();\n\n if (this._normalized && metas.length) {\n return (this._cache.data = metas[0].controller.getAllParsedValues(this));\n }\n\n for (i = 0, ilen = metas.length; i < ilen; ++i) {\n timestamps = timestamps.concat(metas[i].controller.getAllParsedValues(this));\n }\n\n return (this._cache.data = this.normalize(timestamps));\n }\n\n /**\n\t * @protected\n\t */\n getLabelTimestamps() {\n const timestamps = this._cache.labels || [];\n let i, ilen;\n\n if (timestamps.length) {\n return timestamps;\n }\n\n const labels = this.getLabels();\n for (i = 0, ilen = labels.length; i < ilen; ++i) {\n timestamps.push(parse(this, labels[i]));\n }\n\n return (this._cache.labels = this._normalized ? timestamps : this.normalize(timestamps));\n }\n\n /**\n\t * @param {number[]} values\n\t * @protected\n\t */\n normalize(values) {\n // It seems to be somewhat faster to do sorting first\n return _arrayUnique(values.sort(sorter));\n }\n}\n","import TimeScale from './scale.time.js';\nimport {_lookupByKey} from '../helpers/helpers.collection.js';\n\n/**\n * Linearly interpolates the given source `val` using the table. If value is out of bounds, values\n * at edges are used for the interpolation.\n * @param {object} table\n * @param {number} val\n * @param {boolean} [reverse] lookup time based on position instead of vice versa\n * @return {object}\n */\nfunction interpolate(table, val, reverse) {\n let lo = 0;\n let hi = table.length - 1;\n let prevSource, nextSource, prevTarget, nextTarget;\n if (reverse) {\n if (val >= table[lo].pos && val <= table[hi].pos) {\n ({lo, hi} = _lookupByKey(table, 'pos', val));\n }\n ({pos: prevSource, time: prevTarget} = table[lo]);\n ({pos: nextSource, time: nextTarget} = table[hi]);\n } else {\n if (val >= table[lo].time && val <= table[hi].time) {\n ({lo, hi} = _lookupByKey(table, 'time', val));\n }\n ({time: prevSource, pos: prevTarget} = table[lo]);\n ({time: nextSource, pos: nextTarget} = table[hi]);\n }\n\n const span = nextSource - prevSource;\n return span ? prevTarget + (nextTarget - prevTarget) * (val - prevSource) / span : prevTarget;\n}\n\nclass TimeSeriesScale extends TimeScale {\n\n static id = 'timeseries';\n\n /**\n * @type {any}\n */\n static defaults = TimeScale.defaults;\n\n /**\n\t * @param {object} props\n\t */\n constructor(props) {\n super(props);\n\n /** @type {object[]} */\n this._table = [];\n /** @type {number} */\n this._minPos = undefined;\n /** @type {number} */\n this._tableRange = undefined;\n }\n\n /**\n\t * @protected\n\t */\n initOffsets() {\n const timestamps = this._getTimestampsForTable();\n const table = this._table = this.buildLookupTable(timestamps);\n this._minPos = interpolate(table, this.min);\n this._tableRange = interpolate(table, this.max) - this._minPos;\n super.initOffsets(timestamps);\n }\n\n /**\n\t * Returns an array of {time, pos} objects used to interpolate a specific `time` or position\n\t * (`pos`) on the scale, by searching entries before and after the requested value. `pos` is\n\t * a decimal between 0 and 1: 0 being the start of the scale (left or top) and 1 the other\n\t * extremity (left + width or top + height). Note that it would be more optimized to directly\n\t * store pre-computed pixels, but the scale dimensions are not guaranteed at the time we need\n\t * to create the lookup table. The table ALWAYS contains at least two items: min and max.\n\t * @param {number[]} timestamps\n\t * @return {object[]}\n\t * @protected\n\t */\n buildLookupTable(timestamps) {\n const {min, max} = this;\n const items = [];\n const table = [];\n let i, ilen, prev, curr, next;\n\n for (i = 0, ilen = timestamps.length; i < ilen; ++i) {\n curr = timestamps[i];\n if (curr >= min && curr <= max) {\n items.push(curr);\n }\n }\n\n if (items.length < 2) {\n // In case there is less that 2 timestamps between min and max, the scale is defined by min and max\n return [\n {time: min, pos: 0},\n {time: max, pos: 1}\n ];\n }\n\n for (i = 0, ilen = items.length; i < ilen; ++i) {\n next = items[i + 1];\n prev = items[i - 1];\n curr = items[i];\n\n // only add points that breaks the scale linearity\n if (Math.round((next + prev) / 2) !== curr) {\n table.push({time: curr, pos: i / (ilen - 1)});\n }\n }\n return table;\n }\n\n /**\n * Generates all timestamps defined in the data.\n * Important: this method can return ticks outside the min and max range, it's the\n * responsibility of the calling code to clamp values if needed.\n * @protected\n */\n _generate() {\n const min = this.min;\n const max = this.max;\n let timestamps = super.getDataTimestamps();\n if (!timestamps.includes(min) || !timestamps.length) {\n timestamps.splice(0, 0, min);\n }\n if (!timestamps.includes(max) || timestamps.length === 1) {\n timestamps.push(max);\n }\n return timestamps.sort((a, b) => a - b);\n }\n\n /**\n\t * Returns all timestamps\n\t * @return {number[]}\n\t * @private\n\t */\n _getTimestampsForTable() {\n let timestamps = this._cache.all || [];\n\n if (timestamps.length) {\n return timestamps;\n }\n\n const data = this.getDataTimestamps();\n const label = this.getLabelTimestamps();\n if (data.length && label.length) {\n // If combining labels and data (data might not contain all labels),\n // we need to recheck uniqueness and sort\n timestamps = this.normalize(data.concat(label));\n } else {\n timestamps = data.length ? data : label;\n }\n timestamps = this._cache.all = timestamps;\n\n return timestamps;\n }\n\n /**\n\t * @param {number} value - Milliseconds since epoch (1 January 1970 00:00:00 UTC)\n\t * @return {number}\n\t */\n getDecimalForValue(value) {\n return (interpolate(this._table, value) - this._minPos) / this._tableRange;\n }\n\n /**\n\t * @param {number} pixel\n\t * @return {number}\n\t */\n getValueForPixel(pixel) {\n const offsets = this._offsets;\n const decimal = this.getDecimalForPixel(pixel) / offsets.factor - offsets.end;\n return interpolate(this._table, decimal * this._tableRange + this._minPos, true);\n }\n}\n\nexport default TimeSeriesScale;\n","export * from './controllers/index.js';\nexport * from './core/index.js';\nexport * from './elements/index.js';\nexport * from './platform/index.js';\nexport * from './plugins/index.js';\nexport * from './scales/index.js';\n\nimport * as controllers from './controllers/index.js';\nimport * as elements from './elements/index.js';\nimport * as plugins from './plugins/index.js';\nimport * as scales from './scales/index.js';\n\nexport {\n controllers,\n elements,\n plugins,\n scales,\n};\n\nexport const registerables = [\n controllers,\n elements,\n plugins,\n scales,\n];\n","import React, { useState, useEffect } from \"react\";\nimport BASE_URL from \"components/BaseUrl/apiConfig\";\nimport { Chart } from \"chart.js\";\nimport { display } from \"@mui/system\";\n\nexport default function CardLineChart() {\n\n\n\n const storedUserData = localStorage.getItem('userData');\n let userId = '';\n let groupId = '';\n\n\n\n if (storedUserData) {\n const userData = JSON.parse(storedUserData);\n userId = userData.userId;\n groupId = userData.groupId\n }\n\n // const [chartData, setChartData] = useState(null);\n // const [selectedYear, setSelectedYear] = useState(\"\");\n // const [selectedMonth, setSelectedMonth] = useState(\"\");\n\n\n\n const [chartData, setChartData] = useState();\n const [selectedYear, setSelectedYear] = useState(new Date().getFullYear().toString());\n const [selectedMonth, setSelectedMonth] = useState((new Date().getMonth() + 1).toString()); // Adding 1 because months are zero-indexed\n\n\n const fetchData = async (year, month) => {\n try {\n\n const response = await fetch(`${BASE_URL}/api/Analytics/GetMonthlyExpenseDrandCr?groupId=${groupId}&year=${year}&months=${month}`);\n const data = await response.json();\n setChartData(data);\n // console.log(data);\n } catch (error) {\n console.error(\"Error fetching data:\", error);\n }\n };\n\n useEffect(() => {\n fetchData(selectedYear, selectedMonth);\n }, [userId, selectedYear, selectedMonth]);\n\n useEffect(() => {\n if (chartData) {\n // Destroy the existing chart instance if it exists\n if (window.myLine) {\n window.myLine.destroy();\n }\n var config = {\n type: \"line\",\n data: {\n labels: chartData.map(item => item.date),\n datasets: [\n {\n label: \"Credit\",\n backgroundColor: \"rgb(50, 205, 50)\",\n borderColor: \"rgb(50, 205, 50)\",\n data: chartData.map(item => item.credit),\n fill: false,\n },\n {\n label: \"Debit\",\n fill: false,\n backgroundColor: \"rgba(255,0,0,0.7)\",\n borderColor: \"rgba(255,0,0,0.7)\",\n data: chartData.map(item => item.debit),\n },\n ],\n },\n options: {\n maintainAspectRatio: false,\n responsive: true,\n plugins: {\n title: {\n display: false,\n text: \"Sales Charts\",\n font: {\n color: \"Black\",\n },\n },\n \n legend: {\n labels: {\n color: \"Black\",\n },\n align: \"end\",\n position: \"bottom\",\n },\n tooltip: {\n mode: \"index\",\n intersect: false,\n },\n hover: {\n mode: \"nearest\",\n intersect: true,\n },\n datalabels: {\n color: 'brown',\n display:false,\n font: {\n weight: 'bold',\n size: 16,\n family:'Courier'\n },\n formatter: (value) => {\n return value;\n }\n }\n },\n scales: {\n x: {\n ticks: {\n color: \"rgba(8,8,8,.7)\",\n },\n title: {\n display: true,\n text: \"Date\",\n color: \"Black\",\n },\n grid: {\n display: true,\n borderDash: [2],\n borderDashOffset: [2],\n color: \"rgba(8, 8, 8, 0.3)\",\n zeroLineColor: \"rgba(8, 8, 8, 0)\",\n zeroLineBorderDash: [2],\n zeroLineBorderDashOffset: [2],\n },\n },\n y: {\n ticks: {\n color: \"rgba(8,8,8,.7)\",\n },\n title: {\n display: true,\n text: \"Expenses\",\n color: \"Black\",\n },\n grid: {\n borderDash: [3],\n borderDashOffset: [3],\n drawBorder: true,\n color: \"rgba(8, 8, 8, 0.15)\",\n zeroLineColor: \"rgba(8, 8, 8, 0)\",\n zeroLineBorderDash: [2],\n zeroLineBorderDashOffset: [2],\n },\n },\n },\n elements: {\n point: {\n radius: 4,\n hoverRadius: 2,\n },\n },\n }\n\n\n };\n var ctx = document.getElementById(\"line-chart\").getContext(\"2d\");\n window.myLine = new Chart(ctx, config);\n }\n }, [chartData]);\n\n return (\n <>\n \n
\n
\n
\n
\n
\n
Month Wise Credit And Debit
\n \n
\n
\n setSelectedYear(e.target.value)}\n className=\"bg-white text-black border border-blueGray-600 rounded px-6 py-1 outline-none focus:outline-none md:w-32\"\n >\n {/* Generate options for the next 5 years */}\n {Array.from({ length: 3 }, (_, i) => (\n \n ))}\n \n
\n
\n setSelectedMonth(e.target.value)}\n className=\"bg-white text-black border border-blueGray-600 rounded px-3 py-1 outline-none focus:outline-none md:w-32\"\n >\n {/* Populate with months */}\n {Array.from({ length: 12 }, (_, i) => i + 1).map((month) => (\n \n ))}\n \n
\n
\n
\n\n
\n
\n
\n
\n {/* Chart */}\n
\n \n
\n
\n
\n
\n
\n
\n {/*
OVERVIEW
*/}\n
This Month Expense Distribution
\n
\n
\n setSelectedYear(parseInt(e.target.value, 10))}\n >\n {/* Populate with years */}\n {Array.from({ length: 3 }, (_, i) => (\n \n ))}\n \n
\n
\n setSelectedMonth(parseInt(e.target.value, 10))}\n >\n {/* Populate with months */}\n {Array.from({ length: 12 }, (_, i) => (\n \n ))}\n \n
\n
\n
\n
\n
\n
\n {/* Chart */}\n
\n \n
\n
\n
\n
\n
\n
\n
\n
\n
\n Months Wise Expenses\n
\n \n
\n \n {/* Populate with years */}\n \n \n {/* Add more years as needed */}\n \n
\n
\n\n
\n
\n
\n
\n {/* Chart */}\n
\n \n
\n
\n
\n
\n
\n
\n
Months Wise Credit And Debit
\n
\n
\n setSelectedYear(parseInt(e.target.value, 10))}\n >\n {Array.from({ length: 5 }, (_, i) => (\n \n ))}\n \n
\n \n
\n
\n
\n
\n
\n
history.push(\"/expenses\")} style={{ cursor: \"pointer\" }}>\n
\n
\n
\n
\n {statSubtitle}({currency})\n
\n \n {statTitle}\n \n\n \n
\n
\n
\n {/*
\n \n {\" \"}\n {statPercent}%\n \n {statDescripiron}\n
*/}\n
\n
\n
\n {/* Card stats */}\n
\n\n
\n
\n
\n \n
\n
Expense Management
\n \n \n\n
\n\n
\n
\n
\n \n
\n
Quantity Management
\n \n \n\n
\n
\n
\n
\n \n
\n
Notes
\n \n \n\n
\n
\n
\n
\n \n
\n
Documents Management
\n \n \n
\n
\n
\n
\n
\n
\n {/* Card stats */}\n
\n\n
\n \n
\n
\n \n
\n
\n \n
\n\n
\n
\n
\r\n
\r\n
\r\n
\r\n
\r\n
\r\n
\r\n Category Wise Transactions({currency})\r\n
\r\n \r\n
\r\n \r\n {/* Populate with years */}\r\n \r\n \r\n {/* Add more years as needed */}\r\n \r\n
\r\n
\r\n
\r\n
\r\n
\r\n
\r\n
\r\n
\r\n
\r\n \r\n \r\n | Expense Type | \r\n {Array.from({ length: 12 }, (_, i) => i + 1).map((monthNumber) => (\r\n {getMonthName(monthNumber)} | \r\n ))}\r\n Total | {/* Add new column for total */}\r\n
\r\n \r\n \r\n {Object.keys(transposedExpenseData).map((expenseType) => {\r\n // Calculate total expenses for the current expense type\r\n const totalExpense = Array.from({ length: 12 }, (_, i) => i + 1)\r\n .reduce((acc, monthNumber) => acc + (transposedExpenseData[expenseType][monthNumber] || 0), 0);\r\n\r\n // Check if totalExpense is not zero, if it is then skip rendering this row\r\n if (totalExpense !== 0) {\r\n return (\r\n \r\n | 18 ? expenseType : null}>\r\n {expenseType.length > 18 ? `${expenseType.substring(0, 15)}...` : expenseType}\r\n | \r\n\r\n {/* Render expense data for each month */}\r\n {Array.from({ length: 12 }, (_, i) => i + 1).map((monthNumber) => (\r\n \r\n {transposedExpenseData[expenseType][monthNumber] || \"\"}\r\n | \r\n ))}\r\n\r\n {/* Render total expense for the expense type */}\r\n {totalExpense} | \r\n
\r\n );\r\n } else {\r\n return null; // Skip rendering this row\r\n }\r\n })}\r\n\r\n {/* New row for totalDebit and totalCredit */}\r\n \r\n | Total Debited | \r\n {chartData.map((dataItem, index) => (\r\n {dataItem.totalDebit || \"\"} | \r\n\r\n ))}\r\n \r\n {/* Calculate the sum of totalDebit */}\r\n {chartData.reduce((total, dataItem) => total + (parseFloat(dataItem.totalDebit) || 0), 0)}\r\n | \r\n
\r\n\r\n \r\n | Total Credited | \r\n {chartData.map((dataItem, index) => (\r\n {dataItem.totalCredit || \"\"} | \r\n\r\n ))}\r\n \r\n {/* Calculate the sum of totalDebit */}\r\n {chartData.reduce((total, dataItem) => total + (parseFloat(dataItem.totalCredit) || 0), 0)}\r\n | \r\n
\r\n \r\n \r\n
\r\n
\r\n
\r\n
\r\n
\r\n
\r\n
\r\n
Expense Types
\r\n\r\n
\r\n \r\n \r\n \r\n\r\n \r\n Add Expense Type\r\n \r\n
\r\n\r\n
\r\n
\r\n
\r\n \r\n \r\n | Expense Type | \r\n Default Text | \r\n Type | \r\n Actions | \r\n
\r\n \r\n \r\n {expenseTypes && expenseTypes.length > 0 ? (\r\n expenseTypes.map((expenseType) => (\r\n \r\n | {expenseType.expenseTypeName} | \r\n {expenseType.defaulttext} | \r\n {expenseType.type} | \r\n \r\n {/* Edit Icon */}\r\n handleEditClick(expenseType)}\r\n />\r\n {/* View Icon */}\r\n ![\"View\"]({require(\"assets/img/Viewicon.png\")} "View") handleViewClick(expenseType)} />\r\n\r\n {/* Delete Icon */}\r\n ![\"Delete\"]({require(\"assets/img/deleteicon.png\")} "Delete") handleDeleteClick(expenseType.expensedescTypeID)} className=\"cursor-pointer\" style={{ width: '20px' }} />\r\n | \r\n
\r\n ))\r\n ) : (\r\n \r\n | No data found. | \r\n
\r\n )}\r\n \r\n
\r\n
\r\n\r\n
\r\n
\r\n
\r\n
\r\n
Settings
\r\n \r\n
\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n
\r\n\r\n {/* here is the code of choose currensy */}\r\n\r\n\r\n\r\n\r\n
\r\n
Choose Currency
\r\n \r\n
\r\n {loading ? (\r\n
Loading...
\r\n ) : (\r\n
\r\n )}\r\n
\r\n\r\n
\r\n