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import Utils from '../utils/Utils'
/**
* ApexCharts Theme Class for setting the colors and palettes.
*
* @module Theme
**/
export default class Theme {
constructor(ctx) {
this.ctx = ctx
this.w = ctx.w
this.colors = []
this.isColorFn = false
this.isHeatmapDistributed = this.checkHeatmapDistributed()
this.isBarDistributed = this.checkBarDistributed()
}
checkHeatmapDistributed() {
const { chart, plotOptions } = this.w.config
return (
(chart.type === 'treemap' &&
plotOptions.treemap &&
plotOptions.treemap.distributed) ||
(chart.type === 'heatmap' &&
plotOptions.heatmap &&
plotOptions.heatmap.distributed)
)
}
checkBarDistributed() {
const { chart, plotOptions } = this.w.config
return (
plotOptions.bar &&
plotOptions.bar.distributed &&
(chart.type === 'bar' || chart.type === 'rangeBar')
)
}
init() {
this.setDefaultColors()
}
setDefaultColors() {
const w = this.w
const utils = new Utils()
w.globals.dom.elWrap.classList.add(
`apexcharts-theme-${w.config.theme.mode}`
)
// Create a copy of config.colors array to avoid mutating the original config.colors
const configColors = [...(w.config.colors || w.config.fill.colors || [])]
w.globals.colors = this.getColors(configColors)
this.applySeriesColors(w.globals.seriesColors, w.globals.colors)
if (w.config.theme.monochrome.enabled) {
w.globals.colors = this.getMonochromeColors(
w.config.theme.monochrome,
w.globals.series,
utils
)
}
const defaultColors = w.globals.colors.slice()
this.pushExtraColors(w.globals.colors)
this.applyColorTypes(['fill', 'stroke'], defaultColors)
this.applyDataLabelsColors(defaultColors)
this.applyRadarPolygonsColors()
this.applyMarkersColors(defaultColors)
}
getColors(configColors) {
const w = this.w
if (!configColors || configColors.length === 0) {
return this.predefined()
}
if (
Array.isArray(configColors) &&
configColors.length > 0 &&
typeof configColors[0] === 'function'
) {
this.isColorFn = true
return w.config.series.map((s, i) => {
let c = configColors[i] || configColors[0]
return typeof c === 'function'
? c({
value: w.globals.axisCharts
? w.globals.series[i][0] || 0
: w.globals.series[i],
seriesIndex: i,
dataPointIndex: i,
w: this.w,
})
: c
})
}
return configColors
}
applySeriesColors(seriesColors, globalsColors) {
seriesColors.forEach((c, i) => {
if (c) {
globalsColors[i] = c
}
})
}
getMonochromeColors(monochrome, series, utils) {
const { color, shadeIntensity, shadeTo } = monochrome
const glsCnt =
this.isBarDistributed || this.isHeatmapDistributed
? series[0].length * series.length
: series.length
const part = 1 / (glsCnt / shadeIntensity)
let percent = 0
return Array.from({ length: glsCnt }, () => {
const newColor =
shadeTo === 'dark'
? utils.shadeColor(percent * -1, color)
: utils.shadeColor(percent, color)
percent += part
return newColor
})
}
applyColorTypes(colorTypes, defaultColors) {
const w = this.w
colorTypes.forEach((c) => {
w.globals[c].colors =
w.config[c].colors === undefined
? this.isColorFn
? w.config.colors
: defaultColors
: w.config[c].colors.slice()
this.pushExtraColors(w.globals[c].colors)
})
}
applyDataLabelsColors(defaultColors) {
const w = this.w
w.globals.dataLabels.style.colors =
w.config.dataLabels.style.colors === undefined
? defaultColors
: w.config.dataLabels.style.colors.slice()
this.pushExtraColors(w.globals.dataLabels.style.colors, 50)
}
applyRadarPolygonsColors() {
const w = this.w
w.globals.radarPolygons.fill.colors =
w.config.plotOptions.radar.polygons.fill.colors === undefined
? [w.config.theme.mode === 'dark' ? '#424242' : 'none']
: w.config.plotOptions.radar.polygons.fill.colors.slice()
this.pushExtraColors(w.globals.radarPolygons.fill.colors, 20)
}
applyMarkersColors(defaultColors) {
const w = this.w
w.globals.markers.colors =
w.config.markers.colors === undefined
? defaultColors
: w.config.markers.colors.slice()
this.pushExtraColors(w.globals.markers.colors)
}
pushExtraColors(colorSeries, length, distributed = null) {
const w = this.w
let len = length || w.globals.series.length
if (distributed === null) {
distributed =
this.isBarDistributed ||
this.isHeatmapDistributed ||
(w.config.chart.type === 'heatmap' &&
w.config.plotOptions.heatmap &&
w.config.plotOptions.heatmap.colorScale.inverse)
}
if (distributed && w.globals.series.length) {
len =
w.globals.series[w.globals.maxValsInArrayIndex].length *
w.globals.series.length
}
if (colorSeries.length < len) {
let diff = len - colorSeries.length
for (let i = 0; i < diff; i++) {
colorSeries.push(colorSeries[i])
}
}
}
updateThemeOptions(options) {
options.chart = options.chart || {}
options.tooltip = options.tooltip || {}
const mode = options.theme.mode
const palette =
mode === 'dark'
? 'palette4'
: mode === 'light'
? 'palette1'
: options.theme.palette || 'palette1'
const foreColor =
mode === 'dark'
? '#f6f7f8'
: mode === 'light'
? '#373d3f'
: options.chart.foreColor || '#373d3f'
options.tooltip.theme = mode || 'light'
options.chart.foreColor = foreColor
options.theme.palette = palette
return options
}
predefined() {
const palette = this.w.config.theme.palette
const palettes = {
palette1: ['#008FFB', '#00E396', '#FEB019', '#FF4560', '#775DD0'],
palette2: ['#3f51b5', '#03a9f4', '#4caf50', '#f9ce1d', '#FF9800'],
palette3: ['#33b2df', '#546E7A', '#d4526e', '#13d8aa', '#A5978B'],
palette4: ['#4ecdc4', '#c7f464', '#81D4FA', '#fd6a6a', '#546E7A'],
palette5: ['#2b908f', '#f9a3a4', '#90ee7e', '#fa4443', '#69d2e7'],
palette6: ['#449DD1', '#F86624', '#EA3546', '#662E9B', '#C5D86D'],
palette7: ['#D7263D', '#1B998B', '#2E294E', '#F46036', '#E2C044'],
palette8: ['#662E9B', '#F86624', '#F9C80E', '#EA3546', '#43BCCD'],
palette9: ['#5C4742', '#A5978B', '#8D5B4C', '#5A2A27', '#C4BBAF'],
palette10: ['#A300D6', '#7D02EB', '#5653FE', '#2983FF', '#00B1F2'],
default: ['#008FFB', '#00E396', '#FEB019', '#FF4560', '#775DD0'],
}
return palettes[palette] || palettes.default
}
}