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| <!-- 仪表盘组件
| 父组件传入数据源与data绑定后 自动渲染
| 父组件最好启动异步组件
| 响应式变化大小
| -->
| <template>
| <div class="dashboard-item" ref="chartContainer"></div>
| </template>
|
| <script>
| import * as echarts from 'echarts';
|
| export default {
| props: ['data'],
| data() {
| return {
| chart: null
| };
| },
| // 父组件设置了实时更新 当源数据发生变化是 监听到立即更新仪表盘
| watch: {
| data(newValue) {
| this.chart.setOption({
| series: [
| {
| name: '实时数据',
| type: 'gauge',
| detail: { formatter: '{value} mg/m³', fontSize: 17 },
| axisLine: {
| lineStyle: {
| color: [
| [0.2, '#67e0e3'],
| [0.5, '#37a2da'],
| [1, '#fd666d']
| ],
| width: 15
| }
| },
| data: [
| {
| value: newValue,
| name: '油烟浓度',
| itemStyle: {
| color: newValue >= 1 ? 'red' : 'green'
| }
| }
| ],
|
| max: 2
| }
| ]
| });
| }
| },
| mounted() {
| // 页面加载完成后调用仪表盘
| this.init();
| window.addEventListener('resize', this.updateChart);
| },
| methods: {
| // 初始化仪表盘
| init() {
| this.chart = echarts.init(this.$refs.chartContainer);
| // 设置默认的空数据仪表盘
| this.chart.setOption({
| // 你的仪表盘配置项
| series: [
| {
| name: '实时数据',
| type: 'gauge',
| detail: { formatter: '{value} mg/m³', fontSize: 17 },
| axisLine: {
| lineStyle: {
| color: [
| [0.2, '#67e0e3'],
| [0.5, '#37a2da'],
| [1, '#fd666d']
| ],
| width: 15
| }
| },
| data: [
| {
| value: this.data,
| name: '油烟浓度',
| itemStyle: {
| color: this.data >= 1 ? 'red' : 'green'
| }
| }
| ],
| max: 2
| }
| ]
| });
| },
| updateChart() {
| this.$nextTick(() => {
| if (this.chart) {
| this.chart.resize();
| }
| });
| }
| },
| beforeUnmount() {
| // 销毁仪表盘实例
| this.chart.dispose();
| }
| };
| </script>
|
| <style>
| .dashboard-item {
| width: 100%;
| height: 300px;
| /* margin: 10px; */
| }
| </style>
|
|
