<script setup>
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import {ref, reactive, onMounted} from "vue";
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import * as echarts from 'echarts/core';
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import html2canvas from "html2canvas";
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const startTime = ref()
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const endTime = ref()
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const searchVal = ref()
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const selectType = ref(1);
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const typeOption = ref([
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{ label: '水电站流量监测点', value: 1 },
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{ label: '新扎口流量监测点', value: 2 },
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])
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const graphicRef = ref(null)
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const chartsRef = ref([]) //动态生成图表ref
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let charts = []
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// 动态设置ref
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const setChartsRef = (el ,index) => {
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if(el){
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chartsRef.value[index] = el
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charts[index] = 'charts' + index
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}
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}
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const data = [
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[ {name: '一月', value: 22}, {name: '二月', value: 38}, {name: '三月', value: 31}, ],
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[ {name: '一月', value: 22}, {name: '二月', value: 38}, {name: '三月', value: 31}, ],
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[ {name: '一月', value: 22}, {name: '二月', value: 38}, {name: '三月', value: 31}, ],
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[ {name: '一月', value: 22}, {name: '二月', value: 38}, {name: '三月', value: 31}, ],
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[ {name: '一月', value: 22}, {name: '二月', value: 38}, {name: '三月', value: 31}, ],
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[ {name: '一月', value: 22}, {name: '二月', value: 38}, {name: '三月', value: 31}, ],
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]
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// 获取图表配置
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const getChartsOptions = (data, unit, maxData, minData=0) => {
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let xdata = [];
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let sdata = [];
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if(data) {
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data.forEach(item => {
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xdata.push(item.name)
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sdata.push(item.value);
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})
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}
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return {
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tooltip: {
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trigger: 'axis',
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},
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grid: {
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top: 50,
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left: 50,
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right: 50,
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bottom: 40
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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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data: xdata,
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axisLabel: {
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color: '#fff',
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fontSize: '1rem'
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}
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},
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yAxis: {
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type: 'value',
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name: unit,
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nameTextStyle: {
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color: '#fff',
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fontSize: '1rem'
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},
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axisLabel: {
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color: '#fff',
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fontSize: '1rem'
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}
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},
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series: [
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{
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data: sdata,
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type: 'line',
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areaStyle: {},
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}
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],
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visualMap: [
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{
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type: 'piecewise',
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show: false,
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dimension: 1,
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seriesIndex: 0,
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pieces: [
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{max: minData, color: 'red'},
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{ min: maxData, color: 'red'}
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],
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outOfRange: { // 在选中范围外 的视觉元素，这里设置在正常范围内的图形颜色
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color: '#8EE5FA'
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}
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}
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],
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}
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}
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// 初始化图表
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const initCharts = () => {
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data.forEach((item, index) => {
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if(chartsRef.value[index]) {
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charts[index] = echarts.init(chartsRef.value[index])
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const option = getChartsOptions(item, '℃', 35)
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charts[index].setOption(option)
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}
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})
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}
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// 全屏操作
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const handleFullScreen = () => {
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graphicRef.value.requestFullscreen()
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}
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// 一键导出
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const handleExport = () => {
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chartsRef.value?.forEach(item => {
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html2canvas(item, {
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scale: 2, // 提高渲染质量
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useCORS: true, // 如果需要跨域资源
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allowTaint: true, // 如果需要处理跨域图片
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backgroundColor: 'rgba(23, 108, 229, 0.3)' //背景色
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}).then(canvas => {
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const link = document.createElement("a");
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link.href = canvas.toDataURL("image/png");
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link.download = '截图.png';
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link.click()
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})
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})
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}
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onMounted(() => {
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initCharts()
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})
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</script>
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<template>
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<div class="graphic">
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<div class="graphic-menu">
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<div class="menu-t">监测点列表</div>
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<el-menu class="el-menu">
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<el-sub-menu index="1">
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<template #title>
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<span>可移动监测点</span>
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</template>
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<el-menu-item index="1-1">水电站流量监测点</el-menu-item>
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</el-sub-menu>
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<el-sub-menu index="2">
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<template #title>
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<span>固定位监测点</span>
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</template>
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<el-menu-item index="2-1">新扎口流量监测点</el-menu-item>
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</el-sub-menu>
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</el-menu>
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</div>
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<div class="graphic-info">
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<div class="graphic-tool">
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<div class="tool-l">
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<div class="name">开始时间</div>
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<el-date-picker
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v-model="startTime"
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type="datetime"
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style="width: 12rem"
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placeholder="请选择开始时间"
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/>
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<div class="name">结束时间</div>
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<el-date-picker
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v-model="endTime"
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type="datetime"
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style="width: 12rem"
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placeholder="请选择结束时间"
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/>
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<div class="name">监测点区域</div>
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<el-select
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v-model="selectType"
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class="tool-select"
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placeholder="Select"
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style="width: 10rem"
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>
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<el-option
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v-for="item in typeOption"
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:key="item.value"
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:label="item.label"
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:value="item.value"
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/>
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</el-select>
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<el-input v-model="searchVal" style="width: 15rem" placeholder="请输入监测点名称" />
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<el-button><el-icon><Search /></el-icon>搜索</el-button>
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<el-button type="success" @click="handleExport">一键导出</el-button>
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</div>
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<div class="tool-r" @click="handleFullScreen">
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<img src="@/assets/images/flow/fullscreen.png" />
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全屏
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</div>
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</div>
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<div class="graphic-box" ref="graphicRef">
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<div class="chartList">
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<div class="chartItem" v-for="(item, index) in data">
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<div class="charts" :ref="el => setChartsRef(el, index)"></div>
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<div class="name">标题</div>
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</div>
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</div>
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</div>
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</div>
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</div>
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</template>
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<style scoped lang="scss">
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.graphic {
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height: 100%;
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display: flex;
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&-menu {
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flex-shrink: 0;
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width: 20%;
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height: 100%;
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padding: 10px 0;
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background: linear-gradient(135deg, #91BDDB 0%, #9EC2DB 99%);
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overflow-y: scroll;
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&::-webkit-scrollbar {
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display: none;
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}
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.menu-t {
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height: 40px;
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line-height: 40px;
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padding-left: 20px;
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font-size: 26px;
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color: #fff;
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background: url("@/assets/images/flow/monitor-title-bg.png") no-repeat;
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background-size: 100% 100%;
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}
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.el-menu {
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background-color: transparent;
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border-right: none;
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:deep(.el-menu) {
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background-color: transparent;
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}
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:deep(.el-sub-menu__title:hover) {
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background-color: rgba(0, 0, 0, 0.06);
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}
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:deep(.el-menu-item.is-active) {
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color: #fff;
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}
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}
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}
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.graphic-info {
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flex-shrink: 0;
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width: 80%;
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height: 100%;
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.graphic-tool {
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width: 100%;
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height: 60px;
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padding: 0 30px;
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background: linear-gradient(90deg, #91BDDB 0%, #DADFE3 100%);
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display: flex;
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align-items: center;
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justify-content: space-between;
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.tool-l {
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display: flex;
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align-items: center;
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gap: 1rem;
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.name {
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font-size: 1.1rem;
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}
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}
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.tool-r {
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display: flex;
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align-items: center;
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img {
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width: 25px;
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margin-right: 10px;
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}
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}
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}
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.graphic-box{
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height: calc(100% - 60px);
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padding: 10px 30px;
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background: linear-gradient(180deg, #91BDDB 0%, rgba(102, 102, 102, 0.5) 100%);
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.chartList{
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height: 100%;
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display: flex;
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flex-wrap: wrap;
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gap: 20px;
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.chartItem{
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width: 32%;
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height: 48%;
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background: rgba(23,108,229,0.3);
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border: 1px solid #176CE5;
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border-radius: 8px;
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.charts{
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height: 90%;
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}
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.name{
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height: 10%;
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text-align: center;
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font-size: 20px;
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color: #fff;
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}
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}
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}
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}
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}
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}
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</style>
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