echarts在Vue中的封装

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封装echarts

封装echarts

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<template>
  <div class="echarts"></div>
</template>

<script>
import echarts from 'echarts';
import _debounce from 'lodash/debounce';
// enumerating ECharts events for now
const ACTION_EVENTS = [
  'legendselectchanged',
  'legendselected',
  'legendunselected',
  'datazoom',
  'datarangeselected',
  'timelinechanged',
  'timelineplaychanged',
  'restore',
  'dataviewchanged',
  'magictypechanged',
  'geoselectchanged',
  'geoselected',
  'geounselected',
  'pieselectchanged',
  'pieselected',
  'pieunselected',
  'mapselectchanged',
  'mapselected',
  'mapunselected',
  'axisareaselected',
  'brush',
  'brushselected'
];
const MOUSE_EVENTS = ['click', 'dblclick', 'mouseover', 'mouseout', 'mousedown', 'mouseup', 'globalout'];
export default {
  name: 'myChart',
  data() {
    return {
      chart: null
    };
  },
  props: {
    options: Object,
    theme: [String, Object],
    initOptions: Object,
    group: String,
    autoResize: Boolean
  },
  computed: {
    // Only recalculated when accessed from JavaScript.
    // Won't update DOM on value change because getters
    // don't depend on reactive values
    width: {
      cache: false,
      get() {
        return this.chart.getWidth();
      }
    },
    height: {
      cache: false,
      get() {
        return this.chart.getHeight();
      }
    },
    isDisposed: {
      cache: false,
      get() {
        return this.chart.isDisposed();
      }
    }
  },
  watch: {
    // use assign statements to tigger "options" and "group" setters
    options: {
      handler(options) {
        if (!this.chart && options) {
          this._initEchart();
        } else {
          this.chart.setOption(this.options, true);
        }
      },
      deep: true
    },
    group: {
      handler(group) {
        this.chart.group = group;
      }
    }
  },
  methods: {
    // provide a explicit merge option method
    mergeOptions(options) {
      this._delegateMethod('setOption', options);
    },
    // just delegates ECharts methods to Vue component
    // use explicit params to reduce transpiled size for now
    resize(options) {
      this._delegateMethod('resize', options);
    },
    dispatchAction(payload) {
      this._delegateMethod('dispatchAction', payload);
    },
    convertToPixel(finder, value) {
      return this._delegateMethod('convertToPixel', finder, value);
    },
    convertFromPixel(finder, value) {
      return this._delegateMethod('convertFromPixel', finder, value);
    },
    containPixel(finder, value) {
      return this._delegateMethod('containPixel', finder, value);
    },
    showLoading(type, options) {
      this._delegateMethod('showLoading', type, options);
    },
    hideLoading() {
      this._delegateMethod('hideLoading');
    },
    getDataURL(options) {
      return this._delegateMethod('getDataURL', options);
    },
    getConnectedDataURL(options) {
      return this._delegateMethod('getConnectedDataURL', options);
    },
    clear() {
      this._delegateMethod('clear');
    },
    dispose() {
      this._delegateMethod('dispose');
    },
    _delegateMethod(name, ...args) {
      if (!this.chart) {
        // Vue.util.warn(`Cannot call [${name}] before the chart is initialized. Set prop [options] first.`, this);
        this.$Message.error(`Cannot call [${name}] before the chart is initialized. Set prop [options] first.`);
        return;
      }
      return this.chart[name](...args);
    },
    _initEchart() {
      if (this.chart) {
        return;
      }

      let chart = echarts.init(this.$el, this.theme, this.initOptions);

      if (this.group) {
        chart.group = this.group;
      }

      chart.setOption(this.options, true);

      // expose ECharts events as custom events
      ACTION_EVENTS.forEach(event => {
        chart.on(event, params => {
          this.$emit(event, params);
        });
      });
      MOUSE_EVENTS.forEach(event => {
        chart.on(event, params => {
          this.$emit(event, params);

          // for backward compatibility, may remove in the future
          this.$emit('chart' + event, params);
        });
      });

      if (this.autoResize) {
        this.__resizeHanlder = _debounce(
          () => {
            chart.resize();
          },
          100,
          { leading: true }
        );
        window.addEventListener('resize', this.__resizeHanlder);
      }

      this.chart = chart;
    }
  },
  mounted() {
    // auto init if `options` is already provided
    if (this.options) {
      this.$nextTick(() => {
        this._initEchart();
      });
    }
  },
  activated() {
    if (this.autoResize) {
      this.chart && this.chart.resize();
    }
  },
  beforeDestroy() {
    if (!this.chart) {
      return;
    }
    if (this.autoResize) {
      window.removeEventListener('resize', this.__resizeHanlder);
    }
    this.dispose();
  },
  connect(group) {
    if (typeof group !== 'string') {
      group = group.map(chart => chart.chart);
    }
    echarts.connect(group);
  },
  disconnect(group) {
    echarts.disConnect(group);
  },
  registerMap(...args) {
    echarts.registerMap(...args);
  },
  registerTheme(...args) {
    echarts.registerTheme(...args);
  }
};
</script>

<style scoped>
.echarts {
  width: 100%;
  height: 100%;
}
</style>

传参：

  1. options 配置项
  2. autoResize 是否自动缩放

注：引入lodash的防抖

进一步封装——折线图

封装

line-chart.vue

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<template>
  <div class="line-chart-cnt">
    <MyChart :options="option" :autoResize="true"></MyChart>
  </div>
</template>

<script>
import MyChart from '@/components/my-chart';
export default {
  name: 'lineChart',
  data() {
    return {
      option: {
        title: {
          left: 'center',
          text: ''
        },
        xAxis: {
          axisLabel: {
            interval: 0,
            rotate: 40
          },
          type: 'category',
          data: []
        },
        yAxis: {
          type: 'value',
          axisLabel: {
            show: true,
            interval: 'auto',
            formatter: '{value}%'
          }
        },
        series: [
          {
            data: [],
            type: 'line'
          }
        ]
      }
    };
  },
  props: {
    title: String,
    chartData: Array,
    xAxisData: Array
  },
  components: {
    MyChart
  },
  mounted() {
    this.option.title.text = this.title;
    this.option.xAxis.data = this.xAxisData;
    this.option.series[0].data = this.chartData;
  },
  watch: {
    xAxisData: {
      handler: function(val) {
        this.option.xAxis.data = val;
      },
      immediate: true
    },
    chartData: {
      handler: function(val) {
        this.option.series[0].data = val;
      },
      immediate: true
    },
    title: {
      handler: function(val) {
        this.option.title.text = val;
      },
      immediate: true
    }
  }
};
</script>

<style scoped lang="less">
.line-chart-cnt {
  width: 100%;
  height: 400px;
  padding: 0 40px;
}
</style>

传参：

  1. title 图表的标题
  2. chartData 数据
  3. xAxisData x轴数据

使用

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<LineChart :title="chartTitle" :chartData="chartData" :xAxisData="xAxisData"></LineChart>

进一步封装——饼图

封装

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<template>
  <div class="line-chart-cnt">
    <MyChart :options="option" :autoResize="true"></MyChart>
  </div>
</template>

<script>
import MyChart from '@/components/my-chart';
export default {
  name: 'lineChart',
  data() {
    return {
      option: {
        title: {
          left: 'center',
          text: ''
        },
        tooltip: {
          trigger: 'item',
          formatter: '{b}<br/>{d}%'
        },
        legend: {
          orient: 'vertical',
          left: 'left',
          data: []
        },
        series: [
          {
            type: 'pie',
            radius: '55%',
            center: ['50%', '60%'],
            data: [],
            itemStyle: {
              emphasis: {
                shadowBlur: 10,
                shadowOffsetX: 0,
                shadowColor: 'rgba(0, 0, 0, 0.5)'
              }
            },
            label: {
              normal: {
                formatter: '{b}\n{d}%'
              }
            }
          }
        ],
        color: [
          '#004DA1',
          '#009EA7',
          '#AACD03',
          '#F9BE00',
          '#EC6C00',
          '#A40081',
          '#0068B6',
          '#00A73B',
          '#FFD800',
          '#F29600',
          '#E5002D',
          '#541B85'
        ]
      }
    };
  },
  props: {
    title: String,
    chartData: Array
  },
  mounted() {
    this.option.title.text = this.title;
    this.option.series[0].data = this.chartData;
    this.chartData.forEach(item => {
      this.option.legend.data.push(item.name);
    });
  },
  watch: {
    chartData: {
      handler: function(val) {
        this.option.series[0].data = val;
        val.forEach(item => {
          this.option.legend.data.push(item.name);
        });
      },
      immediate: true
    },
    title: {
      handler: function(val) {
        this.option.title.text = val;
      },
      immediate: true
    }
  },
  components: {
    MyChart
  }
};
</script>

<style scoped lang="less">
.line-chart-cnt {
  width: 100%;
  height: 400px;
  padding: 0 40px;
}
</style>

传参：

  1. title 图表的标题
  2. chartData 数据

使用

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<SimplePie :title="'各项目人力投向占比'" :chartData="pieChartData"></SimplePie>

进一步封装——柱状图

封装

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<template>
  <div class="line-chart-cnt">
    <MyChart :options="option" :autoResize="true"></MyChart>
  </div>
</template>

<script>
import MyChart from '@/components/my-chart';
export default {
  name: 'BarChart',
  data() {
    return {
      option: {
        title: {
          left: 'center',
          text: ''
        },
        tooltip: {
          trigger: 'axis',
          axisPointer: {
            // 坐标轴指示器，坐标轴触发有效
            type: 'shadow' // 默认为直线，可选为：'line' | 'shadow'
          }
        },
        xAxis: {
          type: 'category',
          data: []
        },
        yAxis: {
          type: 'value',
          axisLabel: {
            show: true,
            interval: 'auto'
          }
        },
        series: [
          {
            data: [],
            type: 'bar',
            label: {
              normal: {
                show: true,
                position: 'top'
              }
            },
            itemStyle: {
              normal: { color: 'rgb(0,77,161)' }
            }
          }
        ]
      }
    };
  },
  props: {
    title: String, // 标题
    chartData: Array, // 图标数据
    xAxisData: Array, // x轴标签
    isPercent: Boolean // true:y轴显示百分比，false：y轴显示数值
  },
  components: {
    MyChart
  },
  mounted() {
    this.option.title.text = this.title;
    this.option.xAxis.data = this.xAxisData;
    this.option.series[0].data = this.chartData;
  },
  watch: {
    xAxisData: {
      handler: function(val) {
        this.option.xAxis.data = val;
      },
      immediate: true
    },
    chartData: {
      handler: function(val) {
        this.option.series[0].data = val;
      },
      immediate: true
    },
    title: {
      handler: function(val) {
        this.option.title.text = val;
      },
      immediate: true
    },
    isPercent: {
      handler: function(val) {
        if (val) {
          this.option.yAxis.axisLabel.formatter = '{value}%';
        }
      },
      immediate: true
    }
  }
};
</script>

<style scoped lang="less">
.line-chart-cnt {
  width: 100%;
  height: 400px;
  padding: 0 40px;
}
</style>

传参：

  1. title 图表的标题
  2. chartData 数据
  3. xAxisData x轴数据
  4. isPercent true:y轴显示百分比，false：y轴显示数值

使用

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<BarChart :title="'活跃度'" :chartData="activityChartData" :xAxisData="activityXAxisData" :isPercent="true"></BarChart>

带辅助横线的柱状图

辅助线只需设置series[index].markLine即可

封装

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<template>
  <div class="line-chart-cnt">
    <MyChart :options="option" :autoResize="true"></MyChart>
  </div>
</template>

<script>
import MyChart from '@/components/my-chart';
export default {
  name: 'MarkLineBarChart',
  data() {
    return {
      option: {
        title: {
          left: 'center',
          text: ''
        },
        tooltip: {
          trigger: 'axis',
          axisPointer: {
            // 坐标轴指示器，坐标轴触发有效
            type: 'shadow' // 默认为直线，可选为：'line' | 'shadow'
          }
        },
        xAxis: {
          type: 'category',
          data: []
        },
        yAxis: {
          type: 'value',
          axisLabel: {
            show: true,
            interval: 'auto'
          }
        },
        series: [
          {
            data: [],
            type: 'bar',
            label: {
              normal: {
                show: true,
                position: 'top'
              }
            },
            markLine: {
              data: [
                {
                  name: '目标值',
                  yAxis: ''
                }
              ]
            },
            itemStyle: {
              normal: { color: 'rgba(0,77,161)' }
            }
          }
        ]
      }
    };
  },
  props: {
    title: String, // 标题
    chartData: Array, // 图标数据
    xAxisData: Array, // x轴标签
    isPercent: Boolean, // true:y轴显示百分比，false：y轴显示数值
    percentAim: Number // 百分比的目标值
  },
  components: {
    MyChart
  },
  mounted() {
    this.option.title.text = this.title;
    this.option.xAxis.data = this.xAxisData;
    this.option.series[0].data = this.chartData;
  },
  watch: {
    xAxisData: {
      handler: function(val) {
        this.option.xAxis.data = val;
      },
      immediate: true
    },
    chartData: {
      handler: function(val) {
        this.option.series[0].data = val;
      },
      immediate: true
    },
    title: {
      handler: function(val) {
        this.option.title.text = val;
      },
      immediate: true
    },
    isPercent: {
      handler: function(val) {
        if (val) {
          this.option.yAxis.axisLabel.formatter = '{value}%';
        }
      },
      immediate: true
    },
    percentAim: {
      handler: function(val) {
        this.option.series[0].markLine.data[0].yAxis = val;
      },
      immediate: true
    }
  }
};
</script>

<style scoped lang="less">
.line-chart-cnt {
  width: 100%;
  height: 400px;
  padding: 0 40px;
}
</style>

传参：

  1. title: String 图表的标题
  2. chartData: Array 数据
  3. xAxisData: Array x轴数据
  4. isPercent: Boolean true:y轴显示百分比，false：y轴显示数值
  5. percentAim: Number 百分比的目标值

使用

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<MarkLineBarChart :title="'打卡完成率'" :chartData="closeLoopChartData" :xAxisData="closeLoopXAxisData" :isPercent="true" :percentAim="90"></MarkLineBarChart>

覆盖的柱状图

覆盖只需设每个series[index].barGap: '-100%'即可

封装

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<template>
  <div class="line-chart-cnt">
    <MyChart :options="option" :autoResize="true"></MyChart>
  </div>
</template>

<script>
import MyChart from '@/components/my-chart';
import { toPercent } from '@/utils';
export default {
  name: 'CoverBarChart',
  data() {
    return {
      option: {
        title: {
          left: 'center',
          text: ''
        },
        tooltip: {
          trigger: 'axis',
          axisPointer: {
            // 坐标轴指示器，坐标轴触发有效
            type: 'shadow' // 默认为直线，可选为：'line' | 'shadow'
          }
        },
        legend: {
          data: ['目标', '实际'],
          left: 'right'
        },
        xAxis: {
          type: 'category',
          data: []
        },
        yAxis: {
          type: 'value',
          axisLabel: {
            show: true,
            interval: 'auto'
          }
        },
        series: [
          {
            name: '目标',
            data: [],
            type: 'bar',
            barGap: '-100%',
            label: {
              normal: {
                show: true,
                position: 'top',
                offset: [55, 0]
              }
            },
            itemStyle: {
              normal: {
                color: 'rgba(0,77,161)'
              }
            }
          },
          {
            name: '实际',
            data: [],
            type: 'bar',
            barGap: '-100%',
            label: {
              normal: {
                show: true,
                position: 'top',
                formatter: ''
              }
            },
            itemStyle: {
              normal: {
                color: 'rgba(249,190,0,0.7)'
                // opacity: 0.7
              }
            }
          }
        ]
      }
    };
  },
  props: {
    title: String,
    xAxisData: Array,
    AimChartData: Array,
    factChartData: Array
  },
  components: {
    MyChart
  },
  mounted() {
    this.option.title.text = this.title;
    this.option.xAxis.data = this.xAxisData;
    this.option.series[0].data = this.AimChartData;
    this.option.series[1].data = this.factChartData;
  },
  watch: {
    xAxisData: {
      handler: function(val) {
        this.option.xAxis.data = val;
      },
      immediate: true
    },
    AimChartData: {
      handler: function(val) {
        this.option.series[0].data = val;
      },
      immediate: true
    },
    factChartData: {
      handler: function(val) {
        this.option.series[1].data = val;
        this.option.series[1].data.forEach((item, index) => {
          this.option.series[1].label.normal.formatter = `${item}，${toPercent(
            item / this.option.series[0].data[index]
          )}`;
        });
      },
      immediate: true
    },
    title: {
      handler: function(val) {
        this.option.title.text = val;
      },
      immediate: true
    }
  }
};
</script>

<style scoped lang="less">
.line-chart-cnt {
  width: 100%;
  height: 400px;
  padding: 0 40px;
}
</style>

传参：

  1. title: String 图表的标题
  2. xAxisData: Array x轴数据
  3. AimChartData: Array 两个数据
  4. factChartData: Array

使用

1
<CoverBarChart :title="'粉丝老师达成情况'" :AimChartData="AimChartData" :factChartData="factChartData" :xAxisData="fanXAxisData"></CoverBarChart>

参考：https://qjzd.net/topic/59afb984b9fded0f2581c259