饼图 图例百分比， 饼图渐变

 

 

$scope.energyRatioData  = [

{value: 1048, name: '报警'},
{value: 735, name: '故障'},
{value: 580, name: '正常'},
{value: 484, name: '离线'},

]

 $scope.energyRatioOption = {
          tooltip: {
            trigger: 'item',
            backgroundColor: 'rgba(30,41,54,.8)',
            // axisPointer: {//坐标轴指示器配置项
            //   lineStyle: {
            //     color: '#F50077'
            //   }
            // },
            borderColor: 'transparent',
            textStyle: {
              color: '#fff'
            }
          },
          legend: {
            right: 50,
            top: 10,
            orient: 'vertical',
            textStyle: {
              color: '#A9D1EC',
              fontSize: 12
            },
            itemGap: 20,
            itemWidth: 6,
            itemHeight: 6,
            icon: 'circle',
            data: $scope.energyRatioLegend,
            // 使用回调函数
            formatter: function(name) {
              // var data=[];
              var data = $scope.energyRatioData;
              var total = 0;
              var tarValue;
              for (var i = 0, l = data.length; i < l; i++) {
                total += Number(data[i].value);
                //console.log(typeof total)
                if (data[i].name == name) {
                  tarValue = Number(data[i].value);
                }
              }

              // console.log(tarValue)
              // console.log(total)
              var p = ((tarValue / total) * 100);//两个饼图所以需要*200-看图数量类推
              // return name + " " + " " + "<span>" +  p.toFixed(1) + "%" + "</span>";
              return name + "     " + p.toFixed(1) + "%" ;
            }
          },
          color: ['#00C8FD','#00FFC8','#FD6B79','#FD9F02', '#0077D4'],
          series: [
            {
              type: 'pie',
              center: ['28%', '42%'],
              radius: ['80%', '65%'],
              itemStyle: {
                borderRadius: 5,
                color: function (params) {
                  var colorList = [
                    {
                      "c1": 'rgba(65,140,106,1)',  //管理
                      "c2": 'rgba(61,255,160,1)'
                    },
                    {
                      "c1": 'rgba(134,60,186,1)',  //实践
                      "c2": 'rgba(61,57,157,1)'
                    },
                    {
                      "c1": 'rgba(251,17,79,1)',//操作
                      "c2": 'rgba(145,56,76,1)'
                    },
                    {
                      "c1": 'rgba(232,108,110,1)',//操作
                      "c2": 'rgba(150,95,97,1)'
                    },
                    {
                      "c1": 'rgba(78,76,47,1)',//操作
                      "c2": 'rgba(253,166,33,1)'
                    }
                  ]
                  // console.log(colorList)
                  // console.log([params.dataIndex])
                  let colorItem = colorList[params.dataIndex]
                  if (colorItem) {
                    return new echarts.graphic.LinearGradient(1, 0, 0, 0, [{ //颜色渐变函数 前四个参数分别表示四个位置依次为左、下、右、上
                      offset: 0,
                      color: colorItem.c1
                    }, {
                      offset: 1,
                      color: colorList[params.dataIndex].c2
                    }])
                  } else {
                    return new echarts.graphic.LinearGradient(1, 0, 0, 0, [{ //颜色渐变函数 前四个参数分别表示四个位置依次为左、下、右、上
                      offset: 0,
                      color: 'rgba(78,76,47,1)'
                    }, {
                      offset: 1,
                      color: 'rgba(253,166,33,1)'
                    }])
                  }
                  // borderColor: '',
                  // borderWidth: 2
                }
              },
              avoidLabelOverlap: false,
              hoverOffset: 5,
              label: {
                normal: {
                  show: false,
                  position: 'center'
                },
                emphasis: {
                  show: false,
                  textStyle: {
                    fontSize: '18'
                  }
                }
              },
              labelLine: {
                normal: {
                  show: false
                }
              },
              data: $scope.energyRatioData
              // data: enterPriseList
            }
          ]
        };