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第三方组件 ​

ECharts ​

提取组件 ​

  • 针对图表的挂载操作进行封装，并提取到npm源中
  • 由于使用全量Echarts组件，打包后，相关文件将达到700k以上；所以将注册Echarts组件部分提取出来，由使用者按需，决定引入哪些组件，经测试，当只使用柱状图时，打包后相关文件仅200k大小

安装依赖 ​

pnpm i echarts@5.4.0 @cpit-cpvf/libs

添加强制加载 ​

vite.config.ts

ts
optimizeDeps: {
    include: [
        'echarts',
        'echarts/core',
        'echarts/charts',
        'echarts/components',
        'echarts/renderers',
    ]
}

6.2. 使用 ​

  • 按需引用echarts
ts
import * as echartsComponent from 'echarts/core';

import {
  BarChart,
  LineChart,
  PieChart,
  // MapChart,
  PictorialBarChart,
  // RadarChart,
} from 'echarts/charts';

import {
  TitleComponent,
  TooltipComponent,
  GridComponent,
  // PolarComponent,
  // AriaComponent,
  // ParallelComponent,
  LegendComponent,
  // RadarComponent,
  // ToolboxComponent,
  // DataZoomComponent,
  // VisualMapComponent,
  // TimelineComponent,
  // CalendarComponent,
  // GraphicComponent,
} from 'echarts/components';

import { SVGRenderer } from 'echarts/renderers';

const customEchart = [
  PieChart,
  TitleComponent,
  TooltipComponent,
  LegendComponent,
  GridComponent,
  BarChart,
  LineChart,
  SVGRenderer,
  PictorialBarChart,
]; // 按需加载Echarts
const allEcharts = [
  // LegendComponent,
  // TitleComponent,
  // TooltipComponent,
  // GridComponent,
  // PolarComponent,
  // AriaComponent,
  // ParallelComponent,
  // BarChart,
  // LineChart,
  // PieChart,
  // MapChart,
  // RadarChart,
  // SVGRenderer,
  // PictorialBarChart,
  // RadarComponent,
  // ToolboxComponent,
  // DataZoomComponent,
  // VisualMapComponent,
  // TimelineComponent,
  // CalendarComponent,
  // GraphicComponent,
];
if (customEchart.length > 0) {
  echartsComponent.use(customEchart);
} else {
  echartsComponent.use(allEcharts);
}

export { echartsComponent };
  • 使用 import { useECharts } from '@cpit-cpvf/libs'
vue
<template>
  <div ref="chartRef" :style="{ height, width }"></div>
</template>
<script lang="ts">
  import { defineComponent, PropType, ref, Ref, onMounted } from 'vue';

  import { useECharts } from '@cpvf/libs';
  import { echartsComponent } from '/@/views/demo/utils/echarts';

  const getLineData = (() => {
    const category: any[] = [];
    let dottedBase = +new Date();
    const lineData: any[] = [];
    const barData: any[] = [];

    for (let i = 0; i < 20; i++) {
      const date = new Date((dottedBase += 1000 * 3600 * 24));
      category.push([date.getFullYear(), date.getMonth() + 1, date.getDate()].join('-'));
      const b = Math.random() * 200;
      const d = Math.random() * 200;
      barData.push(b);
      lineData.push(d + b);
    }
    return { barData, category, lineData };
  })();

  const { barData, lineData, category } = getLineData;
  
  const height = ref(100)
  const width = ref(100)

  // 绑定ref
  const chartRef = ref<HTMLDivElement | null>(null);
  // 为chartRef配置 echarts
  const { setOptions, echarts } = useECharts(
      chartRef as Ref<HTMLDivElement>,
      echartsComponent,
  );
  // 为echarts挂载数据，以下为正常使用echarts配置
  onMounted(() => {
    setOptions({
      backgroundColor: '#0f375f',
      tooltip: {
        trigger: 'axis',
        axisPointer: {
          type: 'shadow',
          label: {
            show: true,
            backgroundColor: '#333',
          },
        },
      },
      legend: {
        data: ['line', 'bar'],
        textStyle: {
          color: '#ccc',
        },
      },
      xAxis: {
        data: category,
        axisLine: {
          lineStyle: {
            color: '#ccc',
          },
        },
      },
      yAxis: {
        splitLine: { show: false },
        axisLine: {
          lineStyle: {
            color: '#ccc',
          },
        },
      },
      series: [
        {
          name: 'line',
          type: 'line',
          smooth: true,
          showAllSymbol: 'auto',
          symbol: 'emptyCircle',
          symbolSize: 15,
          data: lineData,
        },
        {
          name: 'bar',
          type: 'bar',
          barWidth: 10,
          itemStyle: {
            borderRadius: 5,
            color: new echarts.graphic.LinearGradient(0, 0, 0, 1, [
              { offset: 0, color: '#14c8d4' },
              { offset: 1, color: '#43eec6' },
            ]),
          },
          data: barData,
        },
        {
          name: 'line',
          type: 'bar',
          barGap: '-100%',
          barWidth: 10,
          itemStyle: {
            color: new echarts.graphic.LinearGradient(0, 0, 0, 1, [
              { offset: 0, color: 'rgba(20,200,212,0.5)' },
              { offset: 0.2, color: 'rgba(20,200,212,0.2)' },
              { offset: 1, color: 'rgba(20,200,212,0)' },
            ]),
          },
          z: -12,
          data: lineData,
        },
        {
          name: 'dotted',
          type: 'pictorialBar',
          symbol: 'rect',
          itemStyle: {
            color: '#0f375f',
          },
          symbolRepeat: true,
          symbolSize: [12, 4],
          symbolMargin: 1,
          z: -10,
          data: lineData,
        },
      ],
    });
  });
</script>

使用示例 ​

  • 见：示例工程目录src/views/demo/pages/charts

使用经验 ​

见头部导航： 使用经验 - 图表(Echarts)