sgxt_web/src/views/home/echarts/moreBarEcharts.vue

<template>
  <div style="height:100%;width:100%" :id="echartsId"></div>
</template>
<script setup>
import * as echarts from "echarts";
import { el } from "element-plus/es/locale.mjs";
import { on } from "element-plus/lib/utils";
import { onMounted, ref, reactive, defineProps, onUnmounted, watch, nextTick, onBeforeUnmount } from "vue";

const props = defineProps({
  echartsId:{
    type:String,
    default:'moreBarId'
  },
  data:{
    type:Object,
    default:{
      xData:[],
      color:[],
      stack:false, //fasle 并排展示 ，true 堆叠展示
      barWidth:'12px',
      labelColor:'#fff', //横坐标颜色 - 纵坐标颜色 - 标题颜色
      list:[]
    }
  }
});

// 保存图表实例和 resize 处理函数
let myChart = null;
const handleResize = () => {
  myChart && myChart.resize();
};

watch(()=>props.data,val=>{
  nextTick(()=>{ init(val) })
},{immediate:true,deep:true})

// 初始化
function init (val) {
  let color = val.color;
  let list = val.list
  let series = list.map((item ,idx)=>{
    let obj = {
      type: "bar",
      name:item.label,
      data:item.val,
      barWidth: val.barWidth ? val.barWidth: "12px",
    }

    // 是否渐变
    if( Array.isArray(color[idx]) && color[idx].length > 0){
      obj.label = { normal:{show:true,position:'top',color:color[idx][0] ? color[idx][0] : '#EB00FF'} }
      obj.itemStyle = {
        normal: {
          color: new echarts.graphic.LinearGradient(0,0,0,1,[{ offset: 0, color: color[idx][0] },{ offset: 1,  color: color[idx][1] }],false)
        }
      }
    }else{
      obj.itemStyle = {normal: {color: color[idx] ? color[idx] : '#EB00FF'}}
      obj.label = { normal:{show:true,position:'top',color:color[idx] ? color[idx] : '#EB00FF'} }
    }

    // 是否堆叠
    if(val.stack) obj.stack = 'total';
   
    return obj;
  })
  chartFn(series)
}

function chartFn(series) {
  // 复用已有的图表实例，避免重复创建
  if (!myChart) {
    myChart = echarts.init(document.getElementById(props.echartsId));
  }
  var option = {
    grid: {
      top: "12%",
      right: "2%",
      left: "2%",
      bottom: "5%",
      containLabel:true
    },
    legend:{
      data:props.data.list.map(v=>{return v.label}),
      textStyle: { color: props.data.labelColor || "#fff" },
      icon:'diamond', //arrow,diamond,roundRect,rect,none,circle
      itemWidth:16,
      itemHeight:8,
      itemGap:10
    },
    tooltip: {
      trigger: "axis",
      axisPointer: {
        lineStyle: { color: "#ddd" }
      },
      backgroundColor: "rgba(255,255,255,1)",
      padding: [5, 10],
      textStyle: { color: "#7588E4" },
      extraCssText: "box-shadow: 0 0 5px rgba(0,0,0,0.3)"
    },
    xAxis: {
      type: "category",
      data:props.data.xData,
      axisTick: { show: false },
      axisLine: { show: false },
      axisLabel: { color: props.data.labelColor || "#fff",magin:20 },
    },
    yAxis: {
      type: "value",
      splitLine: {
        show:true ,
        lineStyle: {
          type:'dashed',
          color: "rgba(14,95,255,0.5)"
        }
      },
      axisTick: { show: false },
      axisLine: { show: false },
      axisLabel: { color: props.data.labelColor || "#fff"},
    },
    series:series
  };
  option && myChart.setOption(option);
}

// 组件挂载时添加 resize 监听
onMounted(() => {
  window.addEventListener('resize', handleResize);
});

// 组件卸载时清理资源
onBeforeUnmount(() => {
  window.removeEventListener('resize', handleResize);
  if (myChart) {
    myChart.dispose();
    myChart = null;
  }
});
</script>

<style lang="scss" scoped>

</style>