【echarts】05、echarts+vue2 - 玫瑰图

前言

基于echarts5.x和vue2实现
记录以便日后查阅

实现效果

代码实现

<template>
  <div class="chart-wrap">
    <ul class="legend-list">
      <li
        v-for="(item, index) in legend"
        :key="index"
        :class="['legend', item.selected ? '': 'un-active']"
        @mouseenter="enterHandler(item)"
        @mouseleave="leaveHandler(item)"
        @click="clickHandler(item)"
      >
        <i class="rect" :style="{ backgroundColor: item.color }" />
        <span>{{ item.title }}</span>
      </li>
    </ul>
    <div id="chart02" class="chart" />
  </div>
</template>

<script>
export default {
  name: 'Index',
  data () {
    return {
      chart: null,
      data: [10, 10, 70, 10],
      legend: [
        { color: 'rgba(0, 80, 179, 1)', title: '订餐', selected: true },
        { color: 'rgba(9, 109, 217, 1)', title: '体育健身', selected: true },
        { color: 'rgba(51, 157, 255, 1)', title: '上门服务', selected: true },
        { color: 'rgba(6, 200, 140, 1)', title: '代购物', selected: true }
      ]
    }
  },
  mounted() {
    this.createChartHandler()
  },
  methods: {
    // 创建图表
    createChartHandler () {
      this.chart = this.$echarts.init(document.getElementById('chart02'))
      this.chart.setOption(this.getChartOption(this.data, this.legend))
      window.addEventListener('resize', () => {
        setTimeout(() => {
          this.chart.resize()
        })
      })
    },
    // 获取图表配置项
    getChartOption (data, legend) {
      return {
        tooltip: {
          trigger: 'item',
          position: 'right',
          extraCssText:
            'color:#fff;background: rgba(0, 38, 118, 0.5);border:none; box-shadow: 0px 0px 8px 1px rgba(0, 145, 255, 0.5);border-radius: 2px;z-index:99',
          formatter: function (e) {
            return e.data.name + ': ' + e.data.value
          }
        },
        legend: {
          show: false,
          data: legend.map(i => i.title)
        },
        color: legend.map(i => i.color), // 对应数据饼状颜色
        series: [
          {
            type: 'pie',
            radius: ['20%', '90%'],
            center: ['50%', '50%'],
            label: {
              alignTo: 'edge',
              formatter: '{name|{d}%}\n',
              minMargin: 5,
              edgeDistance: 10,
              lineHeight: 30,
              rich: {
                name: {
                  fontSize: 12,
                  color: '#fff',
                  fontFamily: 'PingFangReg',
                  fontWeight: '400'
                }
              }
            },
            roseType: 'area',
            data: [
              { value: data[0], name: '订餐' },
              { value: data[1], name: '体育健身' },
              { value: data[2], name: '上门服务' },
              { value: data[3], name: '代购物' }
            ]
          }
        ]
      }
    },
    // 鼠标移入图例触发
    enterHandler (item) {
      if (!this.chart) return
      this.chart.dispatchAction({
        type: 'highlight',
        name: item.title
      })
    },
    // 鼠标移出图例触发
    leaveHandler (item) {
      if (!this.chart) return
      this.chart.dispatchAction({
        type: 'downplay',
        name: item.title
      })
    },
    // 选中切换
    clickHandler (item) {
      if (!this.chart) return
      item.selected = !item.selected
      this.chart.dispatchAction({
        type: 'legendToggleSelect',
        name: item.title
      })
    }
  }
}
</script>