<template>
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<div
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class="e-chart-root"
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@dblclick="fullScreen"
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:class="{ 'full-screen': fullScreenState }"
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>
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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
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class="iconfont el-icon-yanjingkejian"
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:class="eleClass"
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@click="changeEyeState"
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></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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chart: null,
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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: false,
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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: {
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// 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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},
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],
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yAxis: [
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{
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type: "value",
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splitLine: {
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show: true,
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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 =
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alarmVol.low == false
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? min
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: alarmVol.low < min
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? alarmVol.low
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: 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 =
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alarmVol.high == false
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? max
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: alarmVol.high > max
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? alarmVol.high
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: 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) {
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// 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) {
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// 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) {
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// 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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position: "top",
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color: "#fff",
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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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this.$options.chart = chart;
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// 将图表添加到图表管理
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this.$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(
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{ seriesIndex: 0 },
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pointInPixel
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)[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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