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| <script setup>
| import { onMounted, ref, watchEffect, nextTick, onBeforeUnmount } from "vue";
| import * as echarts from 'echarts';
| import baseChart from "./BaseChart.vue";
| import { toFixed } from '@/utils/toFixed.js';
|
| const chart = ref(null);
| const props = defineProps({
| title: {
| type: String,
| default: ''
| },
| unit: {
| type: String,
| default: ''
| },
| });
|
| function createLinearColor(color) {
| return new echarts.graphic.LinearGradient(0, 0, 1, 0, [{
| offset: 0,
| color,
| }, {
| offset: 0.5,
| color: 'transparent'
| }, {
| offset: 1,
| color
| }
| ], false)
| }
|
| // const colors = ['#12E876', '#E87615', '#0AE3E5'];
| const color = '#0AE3E5';
|
| function getMax(data) {
| let max = Math.max.apply(null, data) * 1.2;
| return toFixed(max, 1) || 1;
| }
|
|
| function getOptions(xLabels, datas, datas_bg) {
| xLabels = xLabels || [];
| datas = datas || [];
| datas_bg = datas_bg || [];
| const option = {
| // title: {
| // text: props.title,
| // textStyle: {
| // fontWeight: 'normal',
| // fontSize: 14,
| // color: '#fff'
| // },
| // left: '6%'
| // },
| tooltip: {
| trigger: 'axis',
| axisPointer: {
| lineStyle: {
| color: '#fff'
| }
| }
| },
| grid: {
| left: '3%',
| right: '4%',
| bottom: '8%',
| top: 30,
| containLabel: true
| },
| xAxis: [{
| type: 'category',
| // boundaryGap: false,
| axisLine: {
| lineStyle: {
| color: '#fff'
| }
| },
| offset: 16,
| data: xLabels
| }],
| yAxis: [{
| type: 'value',
| name: props.unit,
| axisTick: {
| show: true,
| },
| axisLine: {
| show: true,
| lineStyle: {
| color: '#fff'
| }
| },
| axisLabel: {
| margin: 10,
| fontSize: 12,
| color: '#fff'
| },
| splitLine: {
| lineStyle: {
| color: 'rgba(255,255,255,0.2)'
| }
| },
| max: getMax(datas),
| }],
| series: [
| {
| type: 'bar',
| barGap: "-100%",
| tooltip: {
| show: false
| },
| itemStyle: {
| color: 'rgba(255,255,255,0.2)',
| },
| data: datas_bg,
| z: 0
| },
| {
| type: 'bar',
| smooth: true,
| name: datas.name,
| // label: {
| // show: true,
| // position: "top",
| // offset: [0, -18],
| // fontSize: 20,
| // fontWeight: "bolder",
| // color: "#ebf006",
| // },
| itemStyle: {
| color: createLinearColor(color),
| },
| data: datas.data
| }]
| };
|
| return option;
| }
|
| let myChart = null;
| let chart_instance = null;
|
| function initChart() {
| if (chart.value) {
| // myChart = chart.value.getChart();
|
| let option = getOptions();
| chart.value.setOption(option);
| chart_instance = chart.value.getChart();
| }
| }
|
| function updateChart(xLabels, datas, datas_bg) {
| if (chart.value) {
| let option = getOptions(xLabels, datas, datas_bg);
| chart.value.setOption(option);
| }
| }
|
| function getChart() {
| return chart_instance;
| }
|
| function getDataURL() {
| return chart.value.getDataURL();
| }
|
| defineExpose({
| getChart,
| getDataURL,
| updateChart
| });
|
| onMounted(() => {
| // console.log('line mounted', '=============');
|
| initChart();
| });
| </script>
|
| <template>
| <div class="line-chart">
| <base-chart ref="chart"></base-chart>
| </div>
| </template>
|
| <style scoped>
| .line-chart {
| width: 100%;
| height: 100%;
| }
| </style>
|
|
