【Vue中使用Echarts】大屏可视化项目整体布局（pink老师vue 版）

文章目录

一、效果展示
二、基本的布局
三、背景
四、代码
布局中遇到的一些问题

一、效果展示

先看一下展示的效果，无论是尺寸多宽的屏幕，都会将内容显示完整，做到了正正的响应式。唯一不足的是图表中的样例，会随着图表的缩放而变换位置，窗口尺寸变化过快会反应不过来，好在有节流函数，可以让浏览器计算量没有那么大。本篇博客不会直接拿echarts图表下手，会先介绍一些这个大屏可视化的响应式布局。后面会出一个专门的博客介绍echarts的使用。

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二、基本的布局

大致的布局如下，整体分为头部与body，头部有标题与时间两部分，body分为三个子标签，使用flex布局分别占3\5\3份，然后在占3份的标签内又分为三部分，占5份的标签内分为两部分。

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写入样式之后就有了下面的样子

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此时需要将前面封装的画图组件插入到指定的位置。得到下面的结果

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三、背景

可以看出。这有一个在转的地球，地球有一个比较亮的描边，还有一些网格状的东西罩在上面。

地球与网状格格顺时针旋转，光边逆时针旋转，这种效果使用的是动画效果与过渡效果实现，样式代码如下：

map1、map2、map3盒子的背景分别是地球、描边、网格。

.map1,
.map2,
.map3 {
  position: absolute;
  top: 50%;
  left: 50%;
  background-size: 100% 100%;
  background-repeat: no-repeat;
  transform: translate(-50%, -50%);
  width: 6.475rem;
  height: 6.475rem;
  opacity: 0.3;
}
.map1 {
  background-image: url(../../public/images/map.png);

  animation: rotate 15s linear infinite;
}
.map2 {
  width: 8.0375rem;
  height: 8.0375rem;
  background-image: url(../../public/images/lbx.png);

  opacity: 0.8;
  animation: rotate 5s linear infinite;
  z-index: 2;
}
.map3 {
  width: 7.075rem;
  height: 7.075rem;
  background-image: url(../../public/images/jt.png);

  animation: rotate1 10s linear infinite;
}
@keyframes rotate {
  from {
    transform: translate(-50%, -50%) rotate(0deg);
  }
  to {
    transform: translate(-50%, -50%) rotate(360deg);
  }
}
@keyframes rotate1 {
  from {
    transform: translate(-50%, -50%) rotate(0deg);
  }
  to {
    transform: translate(-50%, -50%) rotate(-360deg);
  }
}

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四、代码

//以下面一个panel作为例子进行讲解

//这个标签控制一个图表，mychart是图表将要挂载的ref，option是图表的配置项，title是图表的标题。

Mainbox.vue整体布局

  
    
    
      
      
      
    

    
    
      
      
        
          
            999999999+
            200+
          
        
        
          
            前端需求人数
            市场供应人数
          
        
      
      
      
        
        
        
        
        
        
        
      
    
    
    
      
      
      
    
  



// import MyEcharts from "./MyEcharts.vue";
// import "../../node_modules/echarts/dist/china.js";
import "../../node_modules/echarts/map/js/china.js";
// import "../config/chinamap.js";
// import "../config/china.js";

import * as echarts from "echarts";
import Panel from "./Panel.vue";
var yearData = [
];

var geoCoordMap = {
 
};

var XAData = [
  
];

var XNData = [

];

var YCData = [
  
];

var planePath =
  "path://M1705.06,1318.313v-89.254l-319.9-221.799l0.073-208.063c0.521-84.662-26.629-121.796-63.961-121.491c-37.332-0.305-64.482,36.829-63.961,121.491l0.073,208.063l-319.9,221.799v89.254l330.343-157.288l12.238,241.308l-134.449,92.931l0.531,42.034l175.125-42.917l175.125,42.917l0.531-42.034l-134.449-92.931l12.238-241.308L1705.06,1318.313z";
//var planePath = 'arrow';
var convertData = function (data) {
  var res = [];
  for (var i = 0; i < data.length; i++) {
    var dataItem = data[i];

    var fromCoord = geoCoordMap[dataItem[0].name];
    var toCoord = geoCoordMap[dataItem[1].name];
    if (fromCoord && toCoord) {
      res.push({
        fromName: dataItem[0].name,
        toName: dataItem[1].name,
        coords: [fromCoord, toCoord],
        value: dataItem[1].value,
      });
    }
  }
  return res;
};

var color = ["#a6c84c", "#ffa022", "#46bee9"]; //航线的颜色
var series = [];
[
  ["西安", XAData],
  ["西宁", XNData],
  ["银川", YCData],
].forEach(function (item, i) {
  series.push(
    {
      name: item[0] + " Top3",
      type: "lines",
      zlevel: 1,
      effect: {
        show: true,
        period: 6,
        trailLength: 0.7,
        color: "red", //arrow箭头的颜色
        symbolSize: 3,
      },
      lineStyle: {
        normal: {
          color: color[i],
          width: 0,
          curveness: 0.2,
        },
      },
      data: convertData(item[1]),
    },
    {
      name: item[0] + " Top3",
      type: "lines",
      zlevel: 2,
      symbol: ["none", "arrow"],
      symbolSize: 10,
      effect: {
        show: true,
        period: 6,
        trailLength: 0,
        symbol: planePath,
        symbolSize: 15,
      },
      lineStyle: {
        normal: {
          color: color[i],
          width: 1,
          opacity: 0.6,
          curveness: 0.2,
        },
      },
      data: convertData(item[1]),
    },
    {
      name: item[0] + " Top3",
      type: "effectScatter",
      coordinateSystem: "geo",
      zlevel: 2,
      rippleEffect: {
        brushType: "stroke",
      },
      label: {
        normal: {
          show: true,
          position: "right",
          formatter: "{b}",
        },
      },
      symbolSize: function (val) {
        return val[2] / 8;
      },
      itemStyle: {
        normal: {
          color: color[i],
        },
        emphasis: {
          areaColor: "#2B91B7",
        },
      },
      data: item[1].map(function (dataItem) {
        return {
          name: dataItem[1].name,
          value: geoCoordMap[dataItem[1].name].concat([dataItem[1].value]),
        };
      }),
    }
  );
});
var option = {
  tooltip: {
    trigger: "item",
    formatter: function (params, ticket, callback) {
      if (params.seriesType == "effectScatter") {
        return "线路：" + params.data.name + "" + params.data.value[2];
      } else if (params.seriesType == "lines") {
        return (
          params.data.fromName +
          ">" +
          params.data.toName +
          "
" +
          params.data.value
        );
      } else {
        return params.name;
      }
    },
  },
  legend: {
    orient: "vertical",
    top: "bottom",
    left: "right",
    data: ["西安 Top3", "西宁 Top3", "银川 Top3"],
    textStyle: {
      color: "#fff",
    },
    selectedMode: "multiple",
  },
  geo: {
    map: "china",
    label: {
      emphasis: {
        show: true,
        color: "#fff",
      },
    },
    // 把中国地图放大了1.2倍
    zoom: 1.2,
    roam: true,
    itemStyle: {
      normal: {
        // 地图省份的背景颜色
        areaColor: "rgba(20, 41, 87,0.6)",
        borderColor: "#195BB9",
        borderWidth: 1,
      },
      emphasis: {
        areaColor: "#2B91B7",
      },
    },
  },
  series: series,
};
export default {
  components: { Panel },
  name: "MainBox",
  data() {
    return {
    //这里存放图表
      chartsList: [],
      mycharts: null,
      chartFun: null,
    };
  },
  mounted() {
    // this.$refs.echart1.setOption(this.chartsList[0]);
    // this.$refs.echart2.setOption(this.chartsList[0]);
    if (this.mycharts) {
      this.mycharts.dispose();
    }
    // this.mycharts = echarts.init(document.getElementsByClassName("chinamap"));
    this.mycharts = echarts.init(this.$refs.chinamap);
    this.mycharts.setOption(option);
    let chart = this.mycharts;
    // 节流函数
    function throttle(func, wait, options) {
      let time, context, args, result;
      let previous = 0;
      if (!options) options = {};
      let later = function () {
        previous = options.leading === false ? 0 : new Date().getTime();
        time = null;
        func.apply(context, args);
        if (!time) context = args = null;
      };

      let throttled = function () {
        let now = new Date().getTime();
        if (!previous && options.leading === false) previous = now;
        let remaining = wait - (now - previous);
        context = this;
        args = arguments;
        if (remaining  wait) {
          if (time) {
            clearTimeout(time);
            time = null;
          }
          previous = now;
          func.apply(context, args);
          if (!time) context = args = null;
        } else if (!time && options.trailing !== false) {
          time = setTimeout(later, remaining);
        }
      };
      return throttled;
    }
    this.chartFun = throttle(function () {
      chart.resize();
    }, 10);
    window.addEventListener("resize", this.chartFun);
  },
  beforeDestroy() {
    // 移除窗口改变监听
    window.removeEventListener("resize", this.chartFun);
  },
};



.mainbox {
  display: flex;
  /* background-color: pink; */
  padding: 0.125rem 0.125rem 0;
}
.column {
  /* height: 10rem; */
  /* background-color: red; */
  flex: 3;
}
.mainbox .column:nth-child(2) {
  /* background-color: blue; */
  padding: 0 0.125rem 0.1875rem;
  /* background-color: blue; */
  flex: 5;
}

/* 以下是存放中国地图的容器样式 */
.mainboxtop {
  background-color: rgba(101, 132, 226, 0.1);
  padding: 0.1875rem;
}
.tophd {
  position: relative;
  border: 1px solid rgba(25, 186, 139, 0.17);
}
@font-face {
  font-family: electronicFont;
  src: url(../../public/font/DS-DIGIT.TTF);
}
.tophd > ul,
.topbd > ul {
  display: flex;
}
.tophd > ul > li {
  flex: 1;
  display: inline-block;
  height: 1rem;
  color: #ffeb7b;
  font-size: 0.875rem;
  font-family: electronicFont;
}
.tophd > ul::after {
  position: absolute;
  right: 50%;
  width: 0.0125rem;
  height: 50%;
  top: 25%;
  background-color: rgba(255, 255, 255, 0.2);
  content: "";
}
.tophd::before,
.tophd::after {
  position: absolute;
  content: "";
  width: 0.375rem;
  height: 0.125rem;
}
.tophd::before {
  top: 0;
  left: 0;
  border-top: 2px solid #02a6b5;
  border-left: 2px solid #02a6b5;
}
.tophd::after {
  bottom: 0;
  right: 0;
  border-bottom: 2px solid #02a6b5;
  border-right: 2px solid #02a6b5;
}

.topbd > ul > li {
  flex: 1;
  height: 0.5rem;
  line-height: 0.5rem;
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.225rem;
  padding-top: 0.125rem;
}

.mainboxbody {
  position: relative;
  width: 100%;
  height: 10.125rem;
  /* background-color: pink; */
}
.chinamap {
  position: absolute;
  top: 0;
  left: 0;
  z-index: 5;
  height: 10.125rem;
  width: 100%;
}

Header.vue用于管理布局中的头部。

  
    大屏数据可视化展示
    时间
  



export default {
  name: "Header",
  mounted() {
    var t = null;
    t = setTimeout(time, 1000); //開始运行
    function time() {
      clearTimeout(t); //清除定时器
      let dt = new Date();
      var y = dt.getFullYear();
      var mt = dt.getMonth() + 1;
      var day = dt.getDate();
      var h = dt.getHours(); //获取时
      var m = dt.getMinutes(); //获取分
      var s = dt.getSeconds(); //获取秒
      document.querySelector(".showtime").innerHTML =
        y + "/" + mt + "/" + day + " -" + h + ":" + m + ":" + s;
      t = setTimeout(time, 1000); //设定定时器，循环运行
    }
  },
};



.header {
  position: relative;
  width: 100%;
  height: 1.25rem;
  /* background-color: pink; */
  background: url(../../public/images/head_bg.png) no-repeat;
  background-position: top center;
  background-size: cover;
}
h1 {
  color: #fff;
  text-align: center;
  line-height: 1rem;
  font-size: 0.475rem;
}
.showtime {
  overflow: hidden;
  width: 4.5625rem;
  height: 1rem;
  position: absolute;
  top: 0;
  right: 0.375rem;
  line-height: 0.9375rem;
  font-size: 0.25rem;
  color: rgba(255, 255, 255, 0.7);
}

布局中遇到的一些问题

下面是在布局的时候遇到的一些问题，可以参考一下：

Echarts:There is a chart instance already initialized on the dom.//重复给一个dom元素画图
echarts警告：Can‘t get DOM width or height. Please check dom.clientWidth and dom.clientHeight. …//没有给盒子宽高
Uncaught TypeError: Cannot read properties of undefined (reading ‘echarts’)//没有找到echarts中的china.js

将china.js文件放入echarts.js所在的目录
Error in mounted hook: “TypeError: this.dom.getContext is not a function”

一开始是使用jQuery获取dom，一直报上面的错误，后来改变用vue的ref获取就可以了

使用document.getelementById（）获取也会报错
./src/components/Home.vue Module not found: Error: Can’t resolve ‘less-loader’ in ‘C:\Users\123\Desk

//使用了less语法，没有装less相关插件，执行npm install less-loader@5.0.0 -D