Range Area Chart

Installation

Examples

Props

Schema

Type aliases from this item's source — use them to shape the data you pass in.

interface ChartTheme {
  colors: string[]
  textColor: string
  axisColor: string
  splitLineColor: string
  tooltipBg: string
  tooltipBorder: string
  tooltipText: string
  bgColor: string
  accentColor: string
  dangerColor: string
}

Used by

Files installed (3)

• src/lib/components/ui/charts/range-area-chart/RangeAreaChart.svelte5 kB

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  <script lang="ts" module>
    import type { HTMLAttributes } from 'svelte/elements'
  
    export interface RangeAreaChartProps extends HTMLAttributes<HTMLDivElement> {
      data: Record<string, any>[]
      xField?: string
      minField?: string
      maxField?: string
      avgField?: string
      height?: number | string
      option?: any
      /** Accessible name announced for the chart image. Defaults to "Chart". */
      ariaLabel?: string
      ref?: HTMLDivElement | null
    }
  </script>
  
  <script lang="ts">
    import { init, use } from 'echarts/core'
    import { CanvasRenderer } from 'echarts/renderers'
    import { LineChart as EChartsLineChart } from 'echarts/charts'
    import { GridComponent, LegendComponent, TooltipComponent } from 'echarts/components'
    import { cn } from '$lib/utils'
    import { mergeOptionBlock, resolveChartTheme, toRgba, watchThemeVersion } from './useChartTheme'
  
    use([CanvasRenderer, EChartsLineChart, GridComponent, TooltipComponent, LegendComponent])
  
    let {
      class: className,
      data,
      xField = 'x',
      minField = 'min',
      maxField = 'max',
      avgField = 'avg',
      height = 320,
      option,
      ariaLabel,
      ref = $bindable(null),
      ...restProps
    }: RangeAreaChartProps = $props()
  
    let canvas: HTMLDivElement | null = null
    let chart = $state<ReturnType<typeof init> | null>(null)
    let themeVersion = $state(0)
  
    $effect(() => watchThemeVersion(() => (themeVersion += 1)))
  
    const theme = $derived.by(() => {
      themeVersion
      return resolveChartTheme()
    })
  
    const mergedOption = $derived.by(() => {
      const band = theme.colors[0]
      const avg = theme.colors[3]
      const xData = data.map((d) => d[xField])
      const series = [
        {
          name: 'min',
          type: 'line',
          stack: 'band',
          silent: true,
          symbol: 'none',
          lineStyle: { opacity: 0 },
          itemStyle: { opacity: 0 },
          data: data.map((d) => d[minField]),
        },
        {
          name: 'range',
          type: 'line',
          stack: 'band',
          silent: true,
          symbol: 'none',
          lineStyle: { opacity: 0 },
          areaStyle: { color: toRgba(band, 0.22) },
          data: data.map((d) => (d[maxField] ?? 0) - (d[minField] ?? 0)),
        },
        {
          name: avgField,
          type: 'line',
          smooth: true,
          symbol: 'circle',
          symbolSize: 6,
          lineStyle: { width: 2, color: avg },
          itemStyle: { color: avg },
          data: data.map((d) => d[avgField]),
        },
      ]
      const userOption: any = option ?? {}
      const {
        series: userSeries,
        xAxis: userXAxis,
        yAxis: userYAxis,
        grid: userGrid,
        tooltip: userTooltip,
        legend: userLegend,
        ...userRest
      } = userOption
      const mergedSeries = Array.isArray(userSeries)
        ? series.map((s, i) => ({ ...s, ...(userSeries[i] ?? {}) }))
        : series
      return {
        color: theme.colors,
        grid: mergeOptionBlock({ left: 16, right: 16, top: 24, bottom: 32, containLabel: true }, userGrid),
        tooltip: mergeOptionBlock(
          {
            trigger: 'axis',
            backgroundColor: theme.tooltipBg,
            borderColor: theme.tooltipBorder,
            textStyle: { color: theme.tooltipText, fontSize: 12 },
          },
          userTooltip,
        ),
        legend: mergeOptionBlock(
          {
            bottom: 0,
            icon: 'circle',
            itemWidth: 8,
            itemHeight: 8,
            textStyle: { fontSize: 11, color: theme.textColor },
            data: [avgField, 'range'],
          },
          userLegend,
        ),
        xAxis: mergeOptionBlock(
          {
            type: 'category',
            boundaryGap: false,
            data: xData,
            axisLine: { lineStyle: { color: theme.axisColor } },
            axisLabel: { color: theme.textColor, fontSize: 11 },
            axisTick: { show: false },
          },
          userXAxis,
        ),
        yAxis: mergeOptionBlock(
          {
            type: 'value',
            splitLine: { lineStyle: { color: theme.splitLineColor } },
            axisLabel: { color: theme.textColor, fontSize: 11 },
          },
          userYAxis,
        ),
        series: mergedSeries,
        ...userRest,
      }
    })
  
    $effect(() => {
      if (!canvas) return
      const instance = init(canvas)
      chart = instance
      const ro = new ResizeObserver(() => instance.resize())
      ro.observe(canvas)
      return () => {
        ro.disconnect()
        instance.dispose()
        if (chart === instance) chart = null
      }
    })
  
    $effect(() => {
      chart?.setOption(mergedOption, { notMerge: true, lazyUpdate: true })
    })
  
    const heightStyle = $derived(/^\d+$/.test(String(height)) ? `${height}px` : String(height))
  </script>
  
  <!-- tabindex on a role="img" frame mirrors the Vue twin: keyboard users can focus the chart region. -->
  <!-- svelte-ignore a11y_no_noninteractive_tabindex -->
  <div
    bind:this={ref}
    role="img"
    tabindex="0"
    aria-label={ariaLabel || 'Chart'}
    data-uipkge=""
    data-slot="range-area-chart"
    style="height: {heightStyle}"
    class={cn('focus-visible:ring-ring w-full focus-visible:ring-2 focus-visible:outline-none', className)}
    {...restProps}
  >
    <div bind:this={canvas} class="size-full"></div>
  </div>
  

• src/lib/components/ui/charts/range-area-chart/index.ts0.2 kB

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• src/lib/components/ui/charts/range-area-chart/useChartTheme.ts8.1 kB

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Raw manifest:https://uipkge.dev/r/svelte/range-area-chart.json

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