yudao-dev/src/views/energy/analysis/qoqAnalysis/components/lineChart.vue

<template>
	<div
		id="analysischartLine"
		style="width: 100%"
		:style="{ height: chartHeight + 'px' }"></div>
</template>
<script>
import * as echarts from 'echarts';
import resize from '@/utils/chartMixins/resize';
export default {
	name: 'LineChart',
	mixins: [resize],
	data() {
		return {
			chartDom: '',
			chart: '',
			chartHeight: this.tableHeight(370),
		};
	},
	props: {
		chartData: {
			type: Array,
			required: true,
			default: () => {
				return [];
			},
		},
	},
	watch: {
		chartData: function () {
			this.getChart();
		},
	},
	mounted() {
		window.addEventListener('resize', () => {
			this.chartHeight = this.tableHeight(370);
		});
	},
	methods: {
		getChart() {
			if (
				this.chart !== null &&
				this.chart !== '' &&
				this.chart !== undefined
			) {
				this.chart.dispose(); // 页面多次刷新会出现警告，Dom已经初始化了一个实例，这是销毁实例
			}
			this.chartDom = document.getElementById('analysischartLine');
			this.chart = echarts.init(this.chartDom);
			if (this.chartData.length === 0) {
				return false;
			}
			let arr = this.chartData[0].type; // [水，电，煤]
			let keys = Object.keys(this.chartData[0]);
			let yData = [
				{
					name: '本期',
					type: 'bar',
					data: [],
					barWidth: 20,
				},
				{
					name: '上期',
					type: 'bar',
					data: [],
					barWidth: 20,
				},
			];
			for (let j = 0; j < arr.length; j++) {
				for (let k = 0; k < keys.length; k++) {
					if (keys[k].indexOf(arr[j] + '_上期') > -1) {
						yData[1].data.push(this.chartData[0][keys[k]]);
					}
					if (keys[k].indexOf(arr[j] + '_能源消耗') > -1) {
						yData[0].data.push(this.chartData[0][keys[k]]);
					}
				}
			}
			var option = {
				color: ['#288AFF', '#8EF0AB'],
				tooltip: {
					trigger: 'axis',
					axisPointer: {
						type: 'shadow',
					},
					formatter: function (params) {
						return (
							params[0].axisValue +
							`<br>` +
							params
								.map((item) => {
									let str = `<span style="display:inline-block;width:8px;height:8px;margin: 0 8px 0 -3px;border-radius:2px;background-color:${item.color};"></span>`;
									let seriesNameStr = `<span style="display:inline-block;">${item.seriesName}</span>`;
									let value = item.value ? item.value : '-';
									let valueStr = `<span style="display:inline-block;margin-left:10px;color:rgba(0,0,0,0.45);">${value}</span>`;
									return `<span style="display:flex; justify-content:space-between; margin-bottom: 2px">
									<span>${str}${seriesNameStr}</span>
									<span>${valueStr}</span>
								</span>`;
								})
								.join(``)
						);
					},
				},
				legend: {
					right: '1%',
					icon: 'rect',
					itemHeight: 8,
					itemWidth: 8,
				},
				grid: {
					left: '1%',
					right: '1%',
					bottom: '3%',
					containLabel: true,
				},
				yAxis: {
					type: 'value',
					boundaryGap: [0, 0.01],
				},
				xAxis: {
					type: 'category',
					data: arr,
				},
				series: yData,
			};
			option && this.chart.setOption(option);
		},
	},
};
</script>