<template>
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<div class="e-chart-root" @dblclick="fullScreen" :class="{'full-screen': fullScreenState}">
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<div class="e-chart-container">
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<div class="e-chart" :id="id" :ref="id"></div>
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<div class="e-chart-tools" v-if="showTools">
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<i class="iconfont el-icon-yanjingkejian" :class="eleClass" @click="changeEyeState"></i>
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</div>
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</div>
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</div>
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</template>
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<script>
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// 引入 ECharts 主模块
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import ECharts from "echarts/lib/echarts";
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//引入折线图
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import "echarts/lib/chart/bar";
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//引入提示框
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import "echarts/lib/component/tooltip";
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//引入标题
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import "echarts/lib/component/title";
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//引入图例标志
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import "echarts/lib/component/legend";
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//区域缩放
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import "echarts/lib/component/dataZoom";
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//markeline
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import "echarts/lib/component/markLine"
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// 引入自定义主题
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import "./theme/transparent"
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export default {
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props: {
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id: {
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type: String,
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required: true,
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},
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unit: {
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type: String,
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default: '',
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},
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showTools: {
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type: Boolean,
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default: false,
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},
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showLabel: {
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type: Boolean,
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default: true,
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},
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maxColor: {
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type: String,
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default: 'green',
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},
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minColor: {
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type: String,
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default: 'red',
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},
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rightMenu: {
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type: Boolean,
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default: false,
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}
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},
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data() {
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return {
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fullScreenState: false,
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eye: true,
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}
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},
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methods: {
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getOption(opt) {
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let unit = this.unit;
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let alarmVol = this.getAlarmVal(opt);
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// 整体配置项
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let option = {
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animation: false,
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color: this.getColor(opt),
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title: this.getTitle(opt),
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tooltip: {
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trigger: 'axis',
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axisPointer: { // 坐标轴指示器，坐标轴触发有效
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type: 'shadow' // 默认为直线，可选为：'line' | 'shadow'
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},
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formatter(params) {
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var res = params[0].name + '<br/>';
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params.forEach(item => {
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res += item.marker;
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res += item.seriesName;
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res += ' : ' + item.data[1] + unit + '</br>';
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});
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return res;
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}
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},
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grid: {
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left: '1%',
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right: '1%',
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bottom: '2%',
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containLabel: true
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},
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xAxis: [
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{
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type: 'category',
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axisLine: {
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show: true,
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lineStyle: {
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color: '#b3b3b3',
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}
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},
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axisLabel: {
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color: '#737474',
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textStyle: {
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fontSize: 10
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},
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},
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}
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],
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yAxis: [
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{
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type: 'value',
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axisLine: {
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show: true,
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lineStyle: {
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color: '#b3b3b3',
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}
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},
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axisLabel: {
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color: '#737474',
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textStyle: {
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fontSize: 10
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},
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},
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splitLine: {
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show: true,
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lineStyle: {
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color: '#e8eff8',
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}
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},
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min: function (data) {
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let min = data.min;
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if (min == Infinity) {
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return 0;
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}
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min = alarmVol.low == false ? min : alarmVol.low < min ? alarmVol.low : min;
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return Number((min - min * 0.2).toFixed(2));
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},
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max: function (data) {
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let max = data.max;
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if (max == -Infinity) {
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max = 1;
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}
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max = alarmVol.high == false ? max : alarmVol.high > max ? alarmVol.high : max;
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return Number((max + max * 0.2).toFixed(2));
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}
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}
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],
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series: this.getSeries(opt),
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};
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return option;
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},
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setOption(opt) {
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let option = this.getOption(opt);
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// 清理画布
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this.$G.chartManage.get(this.id).clear();
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// 设置配置项
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this.$G.chartManage.get(this.id).setOption(option);
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},
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getAlarmVal(opt) {
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let result = {
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low: false,
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high: false
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};
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if (opt && opt.series && opt.series.length != 0) {
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let markLine = opt.series[0].markLine;
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if (opt.series && markLine && markLine.data) {
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result.low = markLine.data[0].yAxis;
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result.high = markLine.data[1].yAxis;
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}
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}
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return result;
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},
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getColor(opt) { // 配置自定义颜色
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// 未配置自定义颜色
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if (!opt || !opt.color) {
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return []
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}
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// 返回颜色
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return opt.color;
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},
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getTitle(opt) { // 配置标题
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// 未配置标题
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if (!opt || !opt.title) {
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return {
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show: false,
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};
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}
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// 返回标题
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return opt.title;
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},
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getSeries(opt) { // 设置series
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// 未配置series
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if (!opt || !opt.series) {
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return [];
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}
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let minColor = this.minColor;
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let maxColor = this.maxColor;
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// 设置配置项
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let series = opt.series.map(item => {
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let max = this.getMax(item.data);
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let min = this.getMin(item.data);
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item.type = "bar";
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// 显示数据
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item.label = {
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// show: this.showChartLabel,
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show: false,
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position: 'top',
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color: '#737474',
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};
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// 设置颜色
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if (item.hColor) {
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// 设置背景
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item.itemStyle = {
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color: item.hColor,
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};
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} else {
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// 设置背景
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item.itemStyle = {
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color: function (value) {
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let val = value.value[1];
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if (val == max) {
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return maxColor;
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} else if (val == min) {
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return minColor;
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}
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}
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};
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}
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return item;
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});
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// 返回
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return series;
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},
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getMax(list) {
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let arr = list.map(item => {
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return item[1];
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});
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return Math.max.apply(null, arr);
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},
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getMin(list) {
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let arr = list.map(item => {
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return item[1];
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});
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return Math.min.apply(null, arr);
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},
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fullScreen() {
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this.fullScreenState = this.fullScreenState ? false : true;
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this.$nextTick(() => {
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// 重置大小
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this.$G.chartManage.get(this.id).resize();
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});
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},
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resize() {
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// 重置大小
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this.$G.chartManage.get(this.id).resize();
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},
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changeEyeState() {
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this.eye = this.eye ? false : true;
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let option = this.$G.chartManage.get(this.id).getOption();
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this.setOption(option);
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}
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},
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computed: {
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eleClass() {
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return this.eye ? "el-icon-yanjingkejian" : "el-icon-yanjing-bukejian";
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},
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showChartLabel() {
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return this.showLabel && this.eye ? true : false;
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}
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},
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mounted() {
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let self = this;
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this.$refs[this.id].oncontextmenu = function () {
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return false;
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}
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// 基于准备好的dom，初始化echarts实例
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let chart = ECharts.init(this.$refs[this.id], 'transparent');
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// 将图表添加到图表管理
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this.$G.chartManage.set(this.id, chart);
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// 设置配置项
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this.setOption();
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// 点击事件
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chart.getZr().on('mousedown', function (params) {
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if (params.which == 3) {
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let pointInPixel = [params.offsetX, params.offsetY];
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if (chart.containPixel('grid', pointInPixel)) {
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/*单击图标X轴数据，打开详情*/
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let xIndex = chart.convertFromPixel({ seriesIndex: 0 }, pointInPixel)[0];
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self.$emit('right-click', {
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x: params.event.clientX + 16,
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y: params.event.clientY + 16,
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xIndex: xIndex
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});
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}
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}
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});
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// 根据功能屏蔽右键菜单
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if (this.rightMenu) {
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document.getElementById(this.id).oncontextmenu = function () {
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return false;
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};
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}
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}
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}
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</script>
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<style scoped>
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.e-chart-root,
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.e-chart-container,
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.e-chart {
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height: 100%;
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box-sizing: border-box;
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}
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.e-chart-root.full-screen .e-chart-container {
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position: fixed;
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top: 0;
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left: 0;
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right: 0;
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bottom: 0;
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background-size: 100% 100%;
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z-index: 9999;
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}
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.e-chart-tools {
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position: absolute;
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top: 16px;
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right: 16px;
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z-index: 9;
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}
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.e-chart-tools .iconfont {
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margin-left: 8px;
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font-size: 24px;
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cursor: pointer;
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color: #00fefe;
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}
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.e-chart-tools .iconfont:hover {
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color: #04b1b1;
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}
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.e-chart-tools .iconfont:active {
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color: #ff0000;
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}
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</style>
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