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| <template>
| <div class="chart-wraper">
| <div class="chart" ref="chartContainer"></div>
| </div>
| </template>
|
| <script setup>
| import * as echarts from "echarts";
| import "./theme/custom";
|
| import { onMounted, ref, watchEffect, nextTick, onBeforeUnmount } from "vue";
|
| const chartContainer = ref(null);
| let myChart = null;
| let textColor = "#fff";
| let color = ["#0E7CE2", "#FF8352", "#E271DE", "#F8456B", "#00FFFF", "#4AEAB0"];
| function getLinearColor(color0, color1) {
| return {
| type: "linear",
| x: 0,
| y: 0,
| x2: 0,
| y2: 1,
| colorStops: [
| {
| offset: 0,
| color: color0, // 0% 处的颜色
| },
| {
| offset: 1,
| color: color1, // 100% 处的颜色
| },
| ],
| };
| }
| let formatNumber = function (num) {
| let reg = /(?=(\B)(\d{3})+$)/g;
| return num.toString().replace(reg, ",");
| };
|
| let getPercent = function (value, total) {
| if (total == 0) {
| return "0%";
| }
| return Math.round((value / total) * 1000) / 10 + "%";
| };
| function getOptions(echartData = []) {
| let title = "总量";
|
| // let echartData = [
| // {
| // name: "A类",
| // value: "3720",
| // },
| // {
| // name: "B类",
| // value: "2920",
| // },
| // ];
|
| let total = echartData.reduce((a, b) => {
| return a + b.value * 1;
| }, 0);
|
| return {
| color: color,
| title: [
| {
| text: "{name|" + title + "}\n{val|" + formatNumber(total) + "}",
| top: "center",
| left: "center",
| textStyle: {
| rich: {
| name: {
| fontSize: 14,
| fontWeight: "normal",
| color: textColor,
| padding: [10, 0],
| },
| val: {
| fontSize: 32,
| fontWeight: "bold",
| color: textColor,
| },
| },
| },
| },
| ],
| series: [
| {
| type: "pie",
| radius: ["45%", "60%"],
| center: ["50%", "50%"],
| data: echartData,
| emphasis: {
| scale: false,
| },
| itemStyle: {
| borderColor: textColor,
| borderWidth: 2,
| },
| labelLine: {
| length: 20,
| length2: 20,
| lineStyle: {
| color: textColor,
| },
| },
| label: {
| formatter: (params) => {
| return (
| "{name|" +
| params.name +
| "}\n{value|" +
| formatNumber(params.value) +
| "}\n{value|" +
| getPercent(params.value, total) +
| "}"
| );
| },
| rich: {
| name: {
| fontSize: 14,
| padding: [0, 10, 0, 4],
| color: textColor,
| },
| value: {
| fontSize: 18,
| fontWeight: "bold",
| color: textColor,
| },
| },
| },
| },
| ],
| };
| }
|
| function initChart() {
| if (chartContainer.value) {
| myChart = echarts.init(chartContainer.value, "custom");
|
| let option = getOptions();
| myChart.setOption(option);
|
| // 监听窗口变化重新渲染图表
| window.addEventListener("resize", () => {
| myChart.resize();
| });
| }
| }
|
| function updateChart(xLabels, datas) {
| let option = getOptions(xLabels, datas);
| myChart.setOption(option);
| }
|
| onMounted(() => {
| initChart();
| });
|
| watchEffect(() => {
| // 如果需要基于某些响应式数据更新图表，可以在这里处理
| });
|
| onBeforeUnmount(() => {
| if (myChart) {
| myChart.dispose();
| }
| });
|
| defineExpose({
| updateChart,
| });
| </script>
|
| <style scoped lang="scss">
| .chart-wraper {
| height: 100%;
| position: relative;
| .chart {
| position: absolute;
| left: 0;
| top: 0;
| right: 0;
| bottom: 0;
| }
| }
| </style>
|
|
