ahyd_DIB/pages/summaryOfPortraits/components/components/manager/revenueTrends.vue

<template>
  <div class="revenueTrends">
    <QiunDataCharts type="area" :opts="opts" :chartData="res" :animation="false" :inScrollView="true" :canvas2d="true"
      tooltipFormat="revenueTrends" />
    <!--        <canvas style=" width: 100vw;height: 208px;position: fixed;left: 100%"  class="trends" canvas-id="trends" id="trends" @tap="handleTap"/>-->
    <!--      <image v-if="preferPath" style="width: 100vw;height: 208px;" :src="preferPath"></image>-->

  </div>
</template>

<script>
import QiunDataCharts from "../qiun-data-charts/components/qiun-data-charts/qiun-data-charts.vue";
import uCharts from '@/components/u-charts.js';
var uChartsInstance = {};
export default {
  name: "revenueTrends",
  components: { QiunDataCharts },
  data() {
    return {
      trendsPath: '',
      preferPath: '',
      opts: {},
      res: {}
    }
  },
  props: {
    data: {
      type: Object,
      default: () => { }
    }
  },
  watch: {
    data: {
      handler(value) {
        this.trendsPath = ''
        this.handleCarData(value)
      },
      immediate: true,
      deep: true
    }
  },
  methods: {
    handleTap(e) {
      uChartsInstance[e.target.id].showToolTip(e, {
        formatter: (item, category, index, opts) => {
          const date = new Date()
          let month = date.getMonth() + 1
          if (item.name === '今年') {
            if (index + 1 <= month) {
              return item.name + ":" + item.data + ',' + `同比增长${((opts.series[0].data[index] - opts.series[1].data[index]) / opts.series[1].data[index] * 100).toFixed(2)}%`;
            } else {
              return item.name + ":" + item.data
            }
          } else {
            return item.name + ":" + item.data;
          }
        }
      });
      uChartsInstance[e.target.id].touchLegend(e);
    },
    // 处理传入的数据
    handleCarData(value) {
      let res = value
      this.res = res
      this.opts = {
        categories: res.categories,
        series: res.series,
        animation: false,
        rotate: false,
        rotateLock: false,
        background: "#FFFFFF",
        color: ["#1E80FF", "#00B6FF"],
        padding: [15, 15, 5, 0],
        dataLabel: false,
        enableScroll: false,
        legend: {
          show: true,
          position: "bottom",
          lineHeight: 25,
          float: 'center'

        },
        xAxis: {
          disableGrid: true,
          axisLineColor: '#F2F2F5'
        },
        yAxis: {
          splitNumber: 4,
          showTitle: false,
          gridColor: '#F2F2F5',
          data: [
            {
              min: 0,
              max: this.getNumber(data.max),
              titleOffsetY: -5,
              titleOffsetX: -5,
              fontSize: 12,
              axisLineColor: '#F2F2F5'
            }
          ]
        },
        extra: {
          area: {
            type: "curve",
            opacity: 0.8,
            addLine: true,
            width: 2,
            gradient: true,
            activeType: "hollow",
            dataPointShape: false  // 隐藏数据点上方的数值显示
          }
        }
      }
      // if (value && value.series && value.series.length>0){
      //   this.drawCharts('trends', res)
      // }
    },
    getNumber(value) {
      let number = value / 40
      number = Math.ceil(number)
      return number * 40
    },
    drawCharts(id, data) {
      const ctx = uni.createCanvasContext(id, this);
      let _this = this
      let phoneInfo = uni.getStorageSync('phoneInfo')
      this.width = phoneInfo.screenWidth - 16
      uChartsInstance[id] = new uCharts({
        type: "area",
        context: ctx,
        width: _this.width,
        height: 213,
        categories: data.categories,
        series: data.series,
        animation: false,
        rotate: false,
        rotateLock: false,
        background: "#FFFFFF",
        color: ["#1E80FF", "#00B6FF"],
        padding: [15, 15, 5, 5],
        dataLabel: false,
        enableScroll: false,
        legend: {
          show: true,
          position: "bottom",
          lineHeight: 25,
          float: 'center'

        },
        xAxis: {
          disableGrid: true,
          axisLineColor: '#F2F2F5'
        },
        yAxis: {
          splitNumber: 4,
          showTitle: false,
          gridColor: '#F2F2F5',
          data: [
            {
              min: 0,
              max: _this.getNumber(data.max),
              titleOffsetY: -5,
              titleOffsetX: -5,
              fontSize: 12,
              axisLineColor: '#F2F2F5'
            }
          ]
        },
        extra: {
          area: {
            type: "curve",
            opacity: 0.8,
            addLine: true,
            width: 2,
            gradient: true,
            activeType: "hollow",
            dataLabel: false  // 隐藏数据点上方的数值显示
          }
        }
      });
      setTimeout(() => {
        this.canvasToTempImage('trends')
      }, 500)
    },
    canvasToTempImage(id) {
      uni.canvasToTempFilePath({
        canvasId: id,
        complete: (res) => {
          if (res.tempFilePath) {
            uni.getFileSystemManager().readFile({
              filePath: res.tempFilePath,
              encoding: 'base64',
              success: res => {
                let base64 = 'data:image/png;base64,' + res.data;
                this.trendsPath = base64
              }
            })
          }
        }
      }, this)
    },
  }
}
</script>

<style scoped lang="scss">
.revenueTrends {
  width: calc(100vw - 32px);
  height: 210px;

  .trends {
    width: calc(100vw - 32px);
    height: 208px;
  }
}
</style>