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| <template>
| <div>
| <div class="echart_size" :id="id" :style="`height:${config.height};width:${config.width}`"></div>
| </div>
| </template>
| <script>
| import * as echarts from 'echarts'
| import ResizeListener from 'element-resize-detector';
| import { iuCharts } from '@/utils/echarts'
| export default {
| props: {
| id: {
| type: String,
| default: ''
| },
| config: {
| type: Object,
| default: () => { }
| },
| datas: {
| type: Object,
| default: () => { }
| }
| },
| data() {
| return {
| chart: null,
| }
| },
| watch: {
| /* 如果图表数据是后台获取的，监听父组件中的数据变化，重新触发Echarts */
| datas: {
| deep: true,
| // immediate: true,
| handler(val) {
| this.$nextTick(() => {
| this.init();
| })
| },
| },
| },
| created() {
| this.$nextTick(() => {
| this.init()
| })
| },
| mounted() {
| window.addEventListener('resize', this.windowResizeListener);
| this.chartEleResizeListener();
| },
| beforeDestroy() {
| if (!this.chart) {
| return;
| }
| this.chart.dispose();
| this.chart = null;
| },
| methods: {
| init() {
| // 实例化对象
| this.chart = echarts.init(document.getElementById(this.id))
| this.chart.showLoading({
| text: 'loading',
| color: '#3A7BFA',
| textColor: '#000',
| maskColor: 'rgba(255, 255, 255, 0.2)',
| zlevel: 0,
| });
| if (this.config.isLoading) {
| this.chart.hideLoading();
| switch (this.config.type) {
| case 'bar':
| iuCharts.drawBar(this.chart, this.datas)
| break;
| case 'line':
| iuCharts.drawLine(this.chart, this.datas)
| break;
| case 'pie':
| iuCharts.drawPie(this.chart, this.datas)
| break;
| case 'gauge':
| iuCharts.drawGauge(this.chart, this.datas)
| break;
| default:
| break;
| }
| setTimeout(() => {
| this.chart.resize()
| }, 200)
| }
| },
| /* 对chart元素尺寸进行监听，当发生变化时同步更新echart视图 */
| chartEleResizeListener() {
| const chartInstance = ResizeListener({
| strategy: 'scroll',
| callOnAdd: true
| });
| chartInstance.listenTo(this.$el, () => {
| if (!this.chart) return;
| this.chart.resize();
| });
| },
| /* 当窗口缩放时，echart动态调整自身大小 */
| windowResizeListener() {
| if (!this.chart) return;
| this.chart.resize();
| }
| }
| }
| </script>
| <style scoped>
| .echart_size {
| width: 100%;
| height: 100%;
| }
| </style>
|
|
