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| <template>
| <div class="e-chart-root">
| <div class="e-chart-container">
| <div class="e-chart" ref="chart"></div>
| <div class="e-chart-line" :style="lineStyle"></div>
| </div>
| </div>
| </template>
|
| <script>
| // 引入 ECharts 主模块
| import ECharts from "echarts/lib/echarts";
| //引入折线图
| import "echarts/lib/chart/gauge";
|
| export default {
| chart: "",
| props: {
| lineColor: {
| type: String,
| default: "#ff4887",
| },
| leftColors: {
| type: Array,
| default() {
| return ["#ff4b8750", "#ff4b8750"];
| },
| },
| rightColors: {
| type: Array,
| default() {
| return ["#ff4b87", "#ff84b6"];
| },
| },
| unit: {
| type: String,
| default: "A",
| },
| max: {
| type: Number,
| default: 100,
| },
| },
| data() {
| return {};
| },
| methods: {
| setOption(option) {
| let chart = this.$options.chart;
| if (chart) {
| chart.setOption(option);
| }
| },
| setData(data) {
| let option = this.getInitOption();
| let max = this.max;
| let percent = Math.abs((data / max).toFixed(2));
| option.series[0].axisLine.lineStyle.color[0][0] = percent;
| option.series[0].data[0].value = data;
| this.setOption(option);
| },
| getInitOption() {
| let leftColors = this.leftColors;
| let rightColors = this.rightColors;
| let unit = this.unit;
| let max = this.max;
| let leftColor = new ECharts.graphic.LinearGradient(0, 0, 1, 0, [
| {
| offset: 0,
| color: leftColors[0], // 0% 处的颜色
| },
| {
| offset: 1,
| color: leftColors[1],
| },
| ]);
|
| let rightColor = new ECharts.graphic.LinearGradient(0, 0, 1, 0, [
| {
| offset: 0,
| color: rightColors[0], // 0% 处的颜色
| },
| {
| offset: 1,
| color: rightColors[1],
| },
| ]);
|
| return {
| animation: false,
| series: [
| // 内侧轴线
| {
| type: "gauge",
| radius: "100%", // 位置
| center: ["50%", "90%"],
| min: 0,
| max: max,
| startAngle: 180,
| endAngle: 0,
| axisLine: {
| show: true,
| lineStyle: {
| // 轴线样式
| width: 16, // 宽度
| color: [
| [0, leftColor],
| [1, rightColor],
| ], // 颜色
| },
| },
| pointer: {
| // 仪表盘指针
| show: false,
| },
| axisTick: {
| // 刻度
| show: false,
| },
| splitLine: {
| // 分割线
| show: false,
| },
| axisLabel: {
| // 刻度标签
| show: false,
| },
| detail: {
| lineHeight: 40,
| borderRadius: 8,
| offsetCenter: ["0%", "-12%"],
| fontSize: 18,
| fontWeight: "bolder",
| formatter: function(value) {
| return value + unit;
| },
| color: "#fff",
| },
| data: [
| {
| value: 0,
| },
| ],
| },
| ],
| };
| },
| resize() {
| let chart = this.$options.chart;
| if (chart) {
| chart.resize();
| }
| },
| /**
| * 销毁echarts实例释放内存
| *
| * @return {[type]} [return description]
| */
| dispose() {
| let chart = this.$options.chart;
| if (chart) {
| chart.dispose(); // 销毁实例
| this.$options.chart = "";
| }
| },
| },
| computed: {
| lineStyle() {
| return {
| backgroundColor: this.lineColor,
| };
| },
| },
| mounted() {
| this.$options.chart = ECharts.init(this.$refs.chart);
|
| let data = 0;
| this.setData(data);
| // 监听windows窗口的缩放,绑定resize事件
| window.addEventListener("resize", this.resize);
| },
| beforeDestroy() {
| // 销毁resize事件
| window.removeEventListener("resize", this.resize);
| this.dispose();
| },
| };
| </script>
|
| <style scoped>
| .e-chart-root,
| .e-chart-container,
| .e-chart {
| position: relative;
| height: 100%;
| box-sizing: border-box;
| }
| .e-chart-line {
| position: absolute;
| bottom: 2%;
| left: calc(37.5% - 16px);
| width: calc(25% + 32px);
| height: 4px;
| }
| .e-chart-root.full-screen .e-chart-container {
| position: fixed;
| top: 0;
| left: 0;
| right: 0;
| bottom: 0;
| background-size: 100% 100%;
| z-index: 9999;
| }
|
| .e-chart-tools {
| position: absolute;
| top: 16px;
| right: 16px;
| z-index: 9;
| }
|
| .e-chart-tools .iconfont {
| margin-left: 8px;
| font-size: 24px;
| cursor: pointer;
| color: #00fefe;
| }
|
| .e-chart-tools .iconfont:hover {
| color: #04b1b1;
| }
|
| .e-chart-tools .iconfont:active {
| color: #ff0000;
| }
| </style>
|
|
