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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 props = defineProps({
| unit: {
| type: String,
| },
| rotate: {
| type: Number,
| default: 0,
| }
| });
|
| const chartContainer = ref(null);
| let myChart = null;
| let color = ["#0E7CE2", "#E271DE", "#00FFFF", "#F8456B", "#4AEAB0", "#FF8352"];
|
| 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
| },
| ],
| };
| }
|
| function getOptions(xLabels = [], data = []) {
| let barColor = getLinearColor("#7bda59", "#059789");
| let maxColor = getLinearColor("#e3352b", "#f09f2e");
| let minColor = getLinearColor("#f09f2e", "#d3c209");
| let legends = [];
| return {
| grid: {
| left: 60,
| right: "1%",
| },
| // legend: {
| // x: "22%",
| // top: "8%",
| // textStyle: {
| // color: "#ffffff",
| // },
| // data: xLabels,
| // },
| tooltip: {
| trigger: "axis",
| axisPointer: {
| type: "shadow",
| },
| },
| xAxis: {
| type: "category",
| data: xLabels,
| axisLabel: {
| // 旋转标签的角度
| rotate: props.rotate,
| interval: props.rotate ? 0 : undefined,
| }
| },
| yAxis: {
| type: "value",
| name: props.unit ? `单位: ${props.unit}` : "",
| min: function (data) {
| let min = data.min;
| if (min == Infinity) {
| return 0;
| }
| return Number((min - min * 0.2).toFixed(2));
| },
| max: function (data) {
| let max = data.max;
| if (max == -Infinity) {
| max = 1;
| }
| return Number((max + max * 0.2).toFixed(2));
| },
| },
| series: [
| {
| color,
| data,
| type: "bar",
| // barWidth: 20,
| itemStyle: {
| color: function (params) {
| return color[params.dataIndex % color.length];
| },
| },
| label: {
| show: true,
| position: "top",
| color: "#fff",
| fontSize: 20,
| },
| showBackground: true,
| backgroundStyle: {
| color: "rgba(0, 0, 0, 0.1)",
| },
| },
| ],
| };
| }
|
| 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>
|
|
