chart-base.vue
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<!--
* @Description:
* @Date: 2021-06-15 19:55:05
-->
<!--
* @Description:
* @Date: 2020-07-16 18:27:04
-->
<template>
<div class="ebox" :id="uuid">
<slot class="table" name="map" />
</div>
</template>
<script>
// import { v4 } from 'uuid';
/**
* echart 配置
*/
import { use, init, registerMap } from 'echarts/core';
import { SVGRenderer, CanvasRenderer } from 'echarts/renderers';
import {
PieChart,
BarChart,
LineChart,
MapChart,
ScatterChart
} from 'echarts/charts';
import china from '../chart-type/json/china.json';
// import chinaMapOutline from '../chart-type/json/chinaMapOutline.json';
import {
TitleComponent,
TooltipComponent,
LegendComponent,
GridComponent,
DatasetComponent,
PolarComponent,
VisualMapComponent
} from 'echarts/components';
use([
SVGRenderer,
BarChart,
PieChart,
LineChart,
MapChart,
ScatterChart,
TitleComponent,
TooltipComponent,
LegendComponent,
GridComponent,
DatasetComponent,
PolarComponent,
VisualMapComponent
]);
export default {
props: {
option: {
type: Object,
default: () => ({})
},
type: [Number, String],
autoresize: Boolean
},
data() {
return {
uuid: `${parseInt(Math.random())}-${new Date().getTime()}`,
myChart: null,
height: 0,
imgUrl: ''
};
},
watch: {
option: {
deep: true,
immediate: true,
handler(v) {
if (v) {
this.$nextTick(() => {
this.init();
});
}
}
}
},
methods: {
init() {
if (!this.myChart) {
if ([13, 14].includes(+this.type)) {
registerMap('china', china);
// registerMap('chinaMapOutline', chinaMapOutline);
}
this.myChart = init(document.getElementById(this.uuid));
}
const { option, myChart } = this;
const maxLength = option.series[0].data.length;
const cloneArr = [...option.series[0].data];
if (maxLength > 200) {
const setData = (_myChart, startIndex) => {
const endIndex = startIndex + 200;
if (startIndex == 0) {
option.series[0].data = cloneArr.slice(startIndex, endIndex);
_myChart.setOption(option);
} else {
_myChart.appendData({
seriesIndex: '0',
data: cloneArr.slice(startIndex, endIndex)
});
}
if (maxLength > endIndex) {
setTimeout(
() => {
setData(_myChart, endIndex);
},
startIndex == 0 ? 0 : 100
);
}
};
setData(myChart, 0);
} else {
myChart.setOption(option);
}
// this.imgUrl = this.myChart.getDataURL({
// type: 'png',
// pixelRatio: 1, //放大2倍
// backgroundColor: '#fff'
// });
}
},
mounted() {},
created() {}
};
</script>
<style lang="scss">
.ebox.hide > div {
opacity: 0;
}
</style>
<style scoped lang="scss">
.ebox {
display: flex;
& + .ebox {
margin-top: 80px;
}
}
</style>