311 lines
12 KiB
Vue
311 lines
12 KiB
Vue
<template>
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<div>
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<DateTimeSelect ref="changeDateTime" v-if="!(lineData && lineData.hiddenTime)" :sideIcon="sideIcon" :dateDataTrans="dateDataTrans" :dateShowType="dateShowType" @dataChange="dataChangeValue"></DateTimeSelect>
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<!-- <div :id="`lineChart` + num" style="width:100%;height: 100%;" />-->
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<!-- 新增：包裹图表和自定义下拉框的容器，设置为相对定位 -->
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<div class="chart-wrapper">
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<!-- 自定义的下拉选择框 -->
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<template v-if="this.lineData && this.lineData.unitSelList && this.lineData.unitSelList.length > 0">
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<select :class="'yaxis-selector yaxis-selector' + num" v-model="selectedYAxisName">
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<option v-for="item of this.lineData.unitSelList" :value="item.value">{{item.label}}</option>
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</select>
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</template>
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<!-- 图表容器，id 用于初始化 ECharts -->
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<div :id="`lineChart` + num" class="chart-container"></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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import * as echarts from 'echarts'
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import DateTimeSelect from './dateTimeSelect.vue'
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export default {
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name: 'echartsLine',
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components: {DateTimeSelect},
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props: {
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lineData: {
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type: Object,
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default: () => {}
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},
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title: {
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type: String,
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default: null
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},
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dateShowType: {
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type: String,
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default: null
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},
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dateDataTrans: {
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type: Object,
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default: () => ({})
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},
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chartData: {
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type: Function,
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default: () => {
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}
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},
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sideIcon: {
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type: Object,
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default: () => {}
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}
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},
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watch: {
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lineData: {
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handler(val) {
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this.$nextTick(() => {
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this.selectedYAxisName = this.lineData && this.lineData.unitModel || '';
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this.getList(this.title, this.lineData);
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});
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},
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deep: true,
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immediate: true
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},
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// 新增：监听下拉框选择的变化
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selectedYAxisName(newVal) {
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if (newVal != (this.lineData && this.lineData.unitModel)) {
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let times = this.lineData && this.lineData.hiddenTime ? [] : this.$refs.changeDateTime.dateRange;
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this.chartData({timeArr: times}, newVal);
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}
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}
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},
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data() {
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return {
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lineDataList: '',
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num: '',
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selectedYAxisName: '' // 新增：用于绑定下拉框选中的值
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}
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},
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created() {
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this.num = Math.floor(Math.random() * 9000);
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},
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mounted() {
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if (this.lineData && this.lineData.hiddenTime) {
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this.$nextTick(() => {
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this.getList(this.title, this.lineData);
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});
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}
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},
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methods: {
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getList(title, dataXY) {
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const lineDataListIntance = echarts.init(document.getElementById('lineChart' + this.num));
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let titleList = [{text: title, x: '50%', y: '3%', textAlign: 'center',textStyle: {fontSize: 16}}];
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if (dataXY && dataXY.titleSubtext) {
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titleList.push(dataXY.titleSubtext);
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} else if (dataXY && dataXY.titleVal) {
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titleList[0] = Object.assign({},titleList[0], dataXY.titleVal);
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}
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let legendData = dataXY && dataXY.legend ? dataXY.legend : {};
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if (dataXY && dataXY.legend && dataXY.legend.formatter) {
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let formatData = {
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formatter: function(params) {
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const customSuffix = dataXY && dataXY.content && dataXY.content[params] || ' ';
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return `${params} ${customSuffix}`;
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},
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};
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legendData = Object.assign({}, legendData, formatData);
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}
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let series = [];
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if (dataXY && dataXY.dataList && dataXY.dataList.length > 0) {
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dataXY.dataList.forEach(item => {
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let str = {
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name: item && item.name || '',
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type: 'line',
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// showSymbol: false,
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symbol: item && item.symbol || 'circle',
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data: item && item.data || []
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};
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if (!(item && item.areaStyleNone)) {
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str['areaStyle'] = {
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opacity: 0.6
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};
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}
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series.push(str);
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});
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} else {
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series = [{
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data: dataXY && dataXY.data || [],
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type: 'line',
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smooth: true,
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// areaStyle: { // 阴影
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// color: 'rgba(140, 158, 217, 1)'
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// }
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}];
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}
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let option = {
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title: titleList,
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legend: legendData,
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tooltip: {
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trigger: 'axis',
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axisPointer: {
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type: 'cross',
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label: {
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backgroundColor: '#6a7985'
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}
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}
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},
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grid: {
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top: dataXY && dataXY.gridTop || '80px',
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left: dataXY && dataXY.gridLeft || '2%',
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right: '4%',
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bottom: dataXY && dataXY.gridBotm || '3%',
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containLabel: true
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},
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xAxis: {
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type: 'category',
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boundaryGap: false,
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axisLine: {
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show: false
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},
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axisTick: {
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show: false
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},
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axisLabel: {
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formatter: function(value) {
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if (value) {
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// 每4个字符换一行（根据实际文本长度调整）
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const maxLength = 11;
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let result = '';
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let count = 0;
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for (let i = 0; i < value.length; i++) {
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count++;
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result += value[i];
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if (count % maxLength === 0 && i !== value.length - 1) {
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result += '\n'; // 换行
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}
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}
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return result;
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}
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},
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// lineHeight: 10, // 行高（确保换行后不重叠）
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},
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data: dataXY && dataXY.lineXData || []
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},
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yAxis: {
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type: 'value',
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name: dataXY?.yAxisName || ' ',
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nameTextStyle: dataXY && dataXY.unitSelList && dataXY.unitSelList.length > 0 ? {color: 'transparent'} : {}, // 将名称文本颜色设为透明，使其不可见
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min: 0, // 自定义最小刻度（根据业务需求调整，如 0）
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max: dataXY && dataXY.data && dataXY.data.length > 0 ? null : dataXY && dataXY.dataList && dataXY.dataList[0] && dataXY.dataList[0].data.length > 0 ? null : 100,
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splitLine: {
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show: true,
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},
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},
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series: series
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};
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lineDataListIntance.setOption(option);
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if (dataXY && dataXY.unitSelList && dataXY.unitSelList.length > 0) {
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// 初始化图表后，调用方法定位下拉框
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this.positionYAxisSelector(lineDataListIntance);
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}
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window.addEventListener("resize", () => {
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lineDataListIntance.resize();
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if (dataXY && dataXY.unitSelList && dataXY.unitSelList.length > 0) {
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this.positionYAxisSelector(lineDataListIntance);
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}
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});
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},
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positionYAxisSelector(chartInstance) {
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const selector = document.querySelector('.yaxis-selector' + this.num);
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if (!selector || !chartInstance) return;
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const chartDom = chartInstance.getDom();
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const chartRect = chartDom.getBoundingClientRect();
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// 获取图表配置项中的网格设置
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const option = chartInstance.getOption();
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const grid = option.grid && option.grid[0] ? option.grid[0] : {};
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// 使用网格的 left 和 top 作为基准点
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const gridLeft = this.parseGridValue(grid.left || '2%', chartRect.width);
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const gridTop = this.parseGridValue(grid.top || '80px', chartRect.height);
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// const labelAreaLeft = gridLeft - 100; // 向左偏移
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// const labelAreaTop = gridTop + (chartRect.height / 2) - 10; // 垂直居中
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// selector.style.left = `${chartRect.left + window.pageXOffset + labelAreaLeft}px`;
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// selector.style.top = `${chartRect.top + window.pageYOffset + labelAreaTop}px`;
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const labelAreaLeft = gridLeft - 5; // 向左偏移
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const labelAreaTop = gridTop - 35; // 垂直居中
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selector.style.left = `${labelAreaLeft}px`;
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selector.style.top = `${labelAreaTop}px`;
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},
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// 辅助方法：解析网格值（百分比、像素等）
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parseGridValue(value, containerSize) {
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if (typeof value === 'number') return value;
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if (typeof value === 'string') {
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if (value.includes('%')) {
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return (parseFloat(value) / 100) * containerSize;
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} else if (value.includes('px')) {
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return parseFloat(value);
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}
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}
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return 0;
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},
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// updateChartOnYAxisChange(selectedValue) {
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// // 根据选择的值，动态更新图表配置
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// // 例如，可以更新 Y 轴的单位名称、最大值、最小值，甚至切换整个 series 的数据[2](@ref)
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// const chartDom = document.getElementById('lineChart' + this.num);
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// const chartInstance = echarts.getInstanceByDom(chartDom);
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//
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// if (chartInstance) {
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// // 示例：更新 Y 轴的名称显示（虽然它是隐藏的，但可能用于 tooltip 等）
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// const option = chartInstance.getOption();
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// option.yAxis[0].name = this.getYAxisNameByValue(selectedValue); // 假设的方法，根据值返回要显示的名称文本
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//
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// // 示例：可以在这里根据 selectedValue 重新设置 series 的 data[5](@ref)
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// // option.series[0].data = ... 从某个数据源获取新数据
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//
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// chartInstance.setOption(option);
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// }
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// },
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// getYAxisNameByValue(value) {
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// // 一个简单映射，将下拉框的值转换为实际要显示的轴名称
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// const map = {
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// 'value1': '温度 (°C)',
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// 'value2': '湿度 (%)',
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// 'value3': '压力 (Pa)'
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// };
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// return map[value] || '';
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// },
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dataChangeValue(val, timeArr, iconVal) {
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// 调用父级页面传过来的事件，在父级中处理该方法的逻辑--
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if (timeArr) {
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this.chartData(timeArr);
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}
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if (iconVal) {
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this.chartData({iconVal: iconVal})
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}
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// let lineDataList = days && days.length > 0 ? days: this.lineData.lineXData;
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// this.getList(this.title, {data: this.lineData.data, lineXData: lineDataList});
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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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/* 新增样式 */
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.chart-wrapper {
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position: relative; /* 为绝对定位的下拉框提供参考 */
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width: 100%;
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height: 100%;
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}
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.chart-container {
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width: 100%;
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height: 100%;
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}
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.yaxis-selector {
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position: absolute; /* 绝对定位，相对于 .chart-wrapper */
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z-index: 10; /* 确保下拉框显示在图表上方 */
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/* 初始位置，后续由 js 方法精细调整 */
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top: 0;
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left: 0;
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background: white;
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border: 1px solid #ccc;
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border-radius: 3px;
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padding: 2px 5px;
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font-size: 12px;
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}
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</style>
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