642 lines
22 KiB
Vue
642 lines
22 KiB
Vue
<template>
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<view class="ec-wrap">
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<!-- 通过 props 把 option 喂给 renderjs -->
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<view
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class="ec-canvas"
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:prop="option"
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:change:prop="ec.setOption"
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:data-theme="theme"
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/>
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</view>
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</template>
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<script>
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export default {
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name: "EChartsView",
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props: {
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option: { type: Object, default: () => ({}) },
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theme: { type: String, default: "light" },
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},
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};
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</script>
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<script module="ec" lang="renderjs">
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import * as echarts from "echarts";
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// 使用 Map 存储多个图表实例（支持多个 EChartsView 组件）
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const charts = new Map();
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const resizeObservers = new Map();
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// 地图数据加载状态
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let chinaMapLoaded = false;
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let chinaMapLoading = false;
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// 内置的简化中国地图数据（50个主要城市或地区的边界）
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const SIMPLIFIED_CHINA_MAP = {
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"type": "FeatureCollection",
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"features": [
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{
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"type": "Feature",
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"properties": { "name": "南海诸岛", "cp": [113.5439, 3.5951], "childNum": 0 },
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"geometry": { "type": "MultiPolygon", "coordinates": [[[[113.5439, 3.5951], [113.5439, 3.5951]]]] }
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},
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{
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"type": "Feature",
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"properties": { "name": "北京", "cp": [116.4074, 39.9042], "childNum": 16 },
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"geometry": { "type": "Polygon", "coordinates": [[[116, 39.5], [117, 39.5], [117, 40.5], [116, 40.5], [116, 39.5]]] }
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},
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{
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"type": "Feature",
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"properties": { "name": "天津", "cp": [117.2, 39.0842], "childNum": 16 },
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"geometry": { "type": "Polygon", "coordinates": [[[116.7, 38.7], [117.7, 38.7], [117.7, 39.5], [116.7, 39.5], [116.7, 38.7]]] }
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},
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{
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"type": "Feature",
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"properties": { "name": "河北", "cp": [114.5149, 38.0428], "childNum": 0 },
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"geometry": { "type": "Polygon", "coordinates": [[[113.5, 37.5], [119.5, 37.5], [119.5, 42.5], [113.5, 42.5], [113.5, 37.5]]] }
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},
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{
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"type": "Feature",
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"properties": { "name": "山西", "cp": [112.5489, 37.8739], "childNum": 0 },
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"geometry": { "type": "Polygon", "coordinates": [[[110.5, 35], [114.5, 35], [114.5, 40.5], [110.5, 40.5], [110.5, 35]]] }
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},
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{
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"type": "Feature",
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"properties": { "name": "内蒙古", "cp": [111.7558, 40.8183], "childNum": 0 },
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"geometry": { "type": "Polygon", "coordinates": [[[97, 37], [126, 37], [126, 54], [97, 54], [97, 37]]] }
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},
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{
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"type": "Feature",
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"properties": { "name": "辽宁", "cp": [123.4328, 41.8045], "childNum": 0 },
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"geometry": { "type": "Polygon", "coordinates": [[[118.5, 40], [126.5, 40], [126.5, 45], [118.5, 45], [118.5, 40]]] }
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},
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{
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"type": "Feature",
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"properties": { "name": "吉林", "cp": [125.3235, 43.8957], "childNum": 0 },
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"geometry": { "type": "Polygon", "coordinates": [[[121, 41.5], [130, 41.5], [130, 48.5], [121, 48.5], [121, 41.5]]] }
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},
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{
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"type": "Feature",
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"properties": { "name": "黑龙江", "cp": [126.6424, 45.7568], "childNum": 0 },
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"geometry": { "type": "Polygon", "coordinates": [[[121, 43.5], [135, 43.5], [135, 55], [121, 55], [121, 43.5]]] }
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},
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{
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"type": "Feature",
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"properties": { "name": "上海", "cp": [121.4737, 31.2304], "childNum": 16 },
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"geometry": { "type": "Polygon", "coordinates": [[[120.8, 30.7], [122, 30.7], [122, 31.9], [120.8, 31.9], [120.8, 30.7]]] }
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},
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{
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"type": "Feature",
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"properties": { "name": "江苏", "cp": [118.7969, 32.9387], "childNum": 0 },
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"geometry": { "type": "Polygon", "coordinates": [[[118, 31], [122, 31], [122, 34.5], [118, 34.5], [118, 31]]] }
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},
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{
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"type": "Feature",
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"properties": { "name": "浙江", "cp": [120.1551, 30.2741], "childNum": 0 },
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"geometry": { "type": "Polygon", "coordinates": [[[118.5, 28], [123, 28], [123, 31.5], [118.5, 31.5], [118.5, 28]]] }
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},
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{
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"type": "Feature",
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"properties": { "name": "安徽", "cp": [117.2272, 31.8654], "childNum": 0 },
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"geometry": { "type": "Polygon", "coordinates": [[[114.5, 29.5], [119.5, 29.5], [119.5, 34.5], [114.5, 34.5], [114.5, 29.5]]] }
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},
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{
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"type": "Feature",
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"properties": { "name": "福建", "cp": [119.295492, 26.0745], "childNum": 0 },
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"geometry": { "type": "Polygon", "coordinates": [[[118.5, 23.5], [121.5, 23.5], [121.5, 28], [118.5, 28], [118.5, 23.5]]] }
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},
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{
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"type": "Feature",
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"properties": { "name": "江西", "cp": [115.8581, 28.6832], "childNum": 0 },
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"geometry": { "type": "Polygon", "coordinates": [[[113, 24], [118, 24], [118, 30], [113, 30], [113, 24]]] }
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},
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{
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"type": "Feature",
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"properties": { "name": "山东", "cp": [117.1205, 36.6519], "childNum": 0 },
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"geometry": { "type": "Polygon", "coordinates": [[[114, 34.5], [122, 34.5], [122, 38], [114, 38], [114, 34.5]]] }
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},
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{
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"type": "Feature",
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"properties": { "name": "河南", "cp": [113.6254, 34.7466], "childNum": 0 },
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"geometry": { "type": "Polygon", "coordinates": [[[111.5, 32], [117, 32], [117, 36.5], [111.5, 36.5], [111.5, 32]]] }
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},
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{
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"type": "Feature",
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"properties": { "name": "湖北", "cp": [114.3055, 30.5928], "childNum": 0 },
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"geometry": { "type": "Polygon", "coordinates": [[[108, 28.5], [116, 28.5], [116, 33], [108, 33], [108, 28.5]]] }
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},
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{
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"type": "Feature",
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"properties": { "name": "湖南", "cp": [112.9388, 28.2282], "childNum": 0 },
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"geometry": { "type": "Polygon", "coordinates": [[[108.5, 24.5], [114, 24.5], [114, 30], [108.5, 30], [108.5, 24.5]]] }
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},
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{
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"type": "Feature",
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"properties": { "name": "广东", "cp": [113.2644, 23.1291], "childNum": 0 },
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"geometry": { "type": "Polygon", "coordinates": [[[112, 20.5], [116, 20.5], [116, 25], [112, 25], [112, 20.5]]] }
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},
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{
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"type": "Feature",
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"properties": { "name": "广西", "cp": [108.3661, 22.8170], "childNum": 0 },
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"geometry": { "type": "Polygon", "coordinates": [[[104.5, 20.5], [112, 20.5], [112, 26.5], [104.5, 26.5], [104.5, 20.5]]] }
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},
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{
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"type": "Feature",
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"properties": { "name": "四川", "cp": [104.0665, 30.5702], "childNum": 0 },
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"geometry": { "type": "Polygon", "coordinates": [[[100, 26], [108, 26], [108, 35], [100, 35], [100, 26]]] }
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},
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{
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"type": "Feature",
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"properties": { "name": "贵州", "cp": [106.7135, 26.5783], "childNum": 0 },
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"geometry": { "type": "Polygon", "coordinates": [[[103.5, 24.5], [109.5, 24.5], [109.5, 29.5], [103.5, 29.5], [103.5, 24.5]]] }
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},
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{
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"type": "Feature",
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"properties": { "name": "云南", "cp": [102.7103, 24.8801], "childNum": 0 },
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"geometry": { "type": "Polygon", "coordinates": [[[97.5, 21], [106.5, 21], [106.5, 30], [97.5, 30], [97.5, 21]]] }
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},
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{
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"type": "Feature",
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"properties": { "name": "陕西", "cp": [108.9402, 34.3416], "childNum": 0 },
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"geometry": { "type": "Polygon", "coordinates": [[[105.5, 31.5], [111.5, 31.5], [111.5, 39], [105.5, 39], [105.5, 31.5]]] }
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},
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{
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"type": "Feature",
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"properties": { "name": "甘肃", "cp": [103.8343, 35.0080], "childNum": 0 },
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"geometry": { "type": "Polygon", "coordinates": [[[92, 32], [108, 32], [108, 42], [92, 42], [92, 32]]] }
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},
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{
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"type": "Feature",
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"properties": { "name": "青海", "cp": [101.7782, 36.6171], "childNum": 0 },
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"geometry": { "type": "Polygon", "coordinates": [[[89, 31.5], [104.5, 31.5], [104.5, 39.5], [89, 39.5], [89, 31.5]]] }
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},
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{
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"type": "Feature",
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"properties": { "name": "宁夏", "cp": [106.2586, 38.4680], "childNum": 0 },
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"geometry": { "type": "Polygon", "coordinates": [[[104.5, 35.5], [107.5, 35.5], [107.5, 40], [104.5, 40], [104.5, 35.5]]] }
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},
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{
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"type": "Feature",
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"properties": { "name": "新疆", "cp": [87.6278, 43.7929], "childNum": 0 },
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"geometry": { "type": "Polygon", "coordinates": [[[73, 26], [104, 26], [104, 49], [73, 49], [73, 26]]] }
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},
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{
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"type": "Feature",
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"properties": { "name": "西藏", "cp": [88.0959, 29.6470], "childNum": 0 },
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"geometry": { "type": "Polygon", "coordinates": [[[78, 26], [99, 26], [99, 36.5], [78, 36.5], [78, 26]]] }
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},
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{
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"type": "Feature",
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"properties": { "name": "台湾", "cp": [120.9605, 23.6978], "childNum": 0 },
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"geometry": { "type": "Polygon", "coordinates": [[[120.1, 22.5], [121.5, 22.5], [121.5, 25], [120.1, 25], [120.1, 22.5]]] }
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},
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{
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"type": "Feature",
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"properties": { "name": "香港", "cp": [114.1694, 22.3193], "childNum": 0 },
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"geometry": { "type": "Polygon", "coordinates": [[[113.8, 22], [114.5, 22], [114.5, 22.6], [113.8, 22.6], [113.8, 22]]] }
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},
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{
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"type": "Feature",
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"properties": { "name": "澳门", "cp": [113.5439, 22.2987], "childNum": 0 },
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"geometry": { "type": "Polygon", "coordinates": [[[113.3, 22.1], [113.7, 22.1], [113.7, 22.5], [113.3, 22.5], [113.3, 22.1]]] }
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}
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]
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};
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// 加载并注册中国地图
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async function loadChinaMap() {
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if (chinaMapLoaded) {
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return Promise.resolve();
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}
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if (chinaMapLoading) {
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// 如果正在加载，等待加载完成
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return new Promise((resolve) => {
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const checkInterval = setInterval(() => {
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if (chinaMapLoaded) {
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clearInterval(checkInterval);
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resolve();
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}
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}, 100);
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// 最多等待 10 秒
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setTimeout(() => {
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clearInterval(checkInterval);
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resolve();
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}, 10000);
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});
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}
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chinaMapLoading = true;
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try {
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// 首先尝试从在线 CDN 加载中国地图 GeoJSON 数据
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let geoJson = null;
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let loaded = false;
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try {
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const response = await fetch('https://geo.datav.aliyun.com/areas_v3/bound/100000_full.json', {
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timeout: 5000
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});
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if (response.ok) {
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geoJson = await response.json();
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loaded = true;
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console.log('[EChartsView] 从阿里云 CDN 加载中国地图数据成功');
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}
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} catch (e) {
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console.warn('[EChartsView] 从阿里云 CDN 加载失败，尝试备用源...', e);
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}
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// 如果第一个源失败，尝试备用源
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if (!loaded) {
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try {
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const backupResponse = await fetch('https://echarts.apache.org/examples/data/map/china.json', {
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timeout: 5000
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});
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if (backupResponse.ok) {
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geoJson = await backupResponse.json();
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loaded = true;
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console.log('[EChartsView] 从 ECharts 官方源加载中国地图数据成功');
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}
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} catch (e) {
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console.warn('[EChartsView] 从备用源加载也失败，使用内置简化地图', e);
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}
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}
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// 如果网络加载都失败，使用内置的简化地图
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if (!loaded) {
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geoJson = SIMPLIFIED_CHINA_MAP;
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console.log('[EChartsView] 使用内置简化中国地图数据');
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}
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// 注册地图
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if (geoJson) {
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echarts.registerMap('china', geoJson);
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chinaMapLoaded = true;
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console.log('[EChartsView] 中国地图数据已注册');
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} else {
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throw new Error('Failed to load or create China map data');
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}
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} catch (error) {
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console.error('[EChartsView] 加载中国地图数据失败:', error);
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// 降级方案：使用简化地图
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try {
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echarts.registerMap('china', SIMPLIFIED_CHINA_MAP);
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chinaMapLoaded = true;
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console.log('[EChartsView] 已使用内置简化地图作为降级方案');
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} catch (furtherError) {
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console.error('[EChartsView] 即使使用简化地图也失败:', furtherError);
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}
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} finally {
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chinaMapLoading = false;
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}
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}
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function getChartKey(el) {
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// 使用元素的唯一标识作为 key
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if (!el._echartsKey) {
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el._echartsKey = 'echarts_' + Date.now() + '_' + Math.random().toString(36).substr(2, 9);
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}
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return el._echartsKey;
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}
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function ensureChart(el, retryCount = 0) {
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if (!el) return null;
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const key = getChartKey(el);
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let chart = charts.get(key);
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// 如果图表已存在且有效，直接返回
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if (chart && !chart.isDisposed()) {
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return chart;
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}
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// 如果图表已销毁，从 Map 中移除
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if (chart && chart.isDisposed()) {
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charts.delete(key);
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const ro = resizeObservers.get(key);
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if (ro) {
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ro.disconnect();
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resizeObservers.delete(key);
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}
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chart = null;
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}
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// 确保元素有尺寸
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const rect = el.getBoundingClientRect();
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const computedStyle = window.getComputedStyle(el);
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const width = parseFloat(computedStyle.width) || rect.width;
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const height = parseFloat(computedStyle.height) || rect.height;
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// 如果尺寸为 0，尝试延迟初始化（最多重试 10 次）
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if ((width === 0 || height === 0) && retryCount < 10) {
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if (retryCount === 0) {
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console.warn('[EChartsView] 容器尺寸为 0，延迟初始化', { width, height, rect });
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}
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// 使用指数退避策略，避免无限循环
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const delay = Math.min(100 * Math.pow(1.5, retryCount), 1000);
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setTimeout(() => {
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ensureChart(el, retryCount + 1);
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}, delay);
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return null;
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}
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// 如果重试次数过多，使用默认尺寸
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if (width === 0 || height === 0) {
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console.warn('[EChartsView] 容器尺寸仍为 0，使用默认尺寸', { width, height });
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// 使用父元素尺寸或默认值
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const parentRect = el.parentElement ? el.parentElement.getBoundingClientRect() : { width: 800, height: 400 };
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const finalWidth = width || parentRect.width || 800;
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const finalHeight = height || parentRect.height || 400;
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if (finalWidth > 0 && finalHeight > 0) {
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// 设置元素尺寸
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el.style.width = finalWidth + 'px';
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el.style.height = finalHeight + 'px';
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} else {
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console.error('[EChartsView] 无法确定容器尺寸，跳过初始化');
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return null;
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}
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}
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try {
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// 注意：地图数据加载在 setOption 中处理，这里不处理
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// 因为 ensureChart 是同步函数，不能使用 await
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chart = echarts.init(el, null, {
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renderer: "canvas",
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width: rect.width,
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height: rect.height
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});
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charts.set(key, chart);
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// 自适应：监听容器尺寸变化
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if (typeof ResizeObserver !== "undefined") {
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const ro = new ResizeObserver((entries) => {
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for (const entry of entries) {
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const { width, height } = entry.contentRect;
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const c = charts.get(key);
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if (c && !c.isDisposed() && width > 0 && height > 0) {
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try {
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c.resize({ width, height });
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} catch (e) {
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console.warn('[EChartsView] resize 失败', e);
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}
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}
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}
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});
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ro.observe(el);
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resizeObservers.set(key, ro);
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} else {
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// 兜底
|
||
const resizeHandler = () => {
|
||
const c = charts.get(key);
|
||
if (c && !c.isDisposed()) {
|
||
const rect = el.getBoundingClientRect();
|
||
if (rect.width > 0 && rect.height > 0) {
|
||
try {
|
||
c.resize();
|
||
} catch (e) {
|
||
console.warn('[EChartsView] resize 失败', e);
|
||
}
|
||
}
|
||
}
|
||
};
|
||
window.addEventListener("resize", resizeHandler);
|
||
// 存储 handler 以便后续清理
|
||
el._resizeHandler = resizeHandler;
|
||
}
|
||
|
||
return chart;
|
||
} catch (e) {
|
||
console.error('[EChartsView] 初始化失败', e);
|
||
return null;
|
||
}
|
||
}
|
||
|
||
function disposeChart(el) {
|
||
if (!el) return;
|
||
const key = getChartKey(el);
|
||
const chart = charts.get(key);
|
||
|
||
if (chart && !chart.isDisposed()) {
|
||
try {
|
||
chart.dispose();
|
||
} catch (e) {
|
||
console.warn('[EChartsView] dispose 失败', e);
|
||
}
|
||
}
|
||
|
||
charts.delete(key);
|
||
|
||
const ro = resizeObservers.get(key);
|
||
if (ro) {
|
||
ro.disconnect();
|
||
resizeObservers.delete(key);
|
||
}
|
||
|
||
if (el._resizeHandler) {
|
||
window.removeEventListener("resize", el._resizeHandler);
|
||
delete el._resizeHandler;
|
||
}
|
||
}
|
||
|
||
export default {
|
||
mounted() {
|
||
const el = this.$el.querySelector(".ec-canvas") || this.$el;
|
||
if (!el) {
|
||
console.error('[EChartsView] 找不到容器元素');
|
||
return;
|
||
}
|
||
// 延迟初始化，确保 DOM 已渲染
|
||
setTimeout(() => {
|
||
ensureChart(el);
|
||
}, 50);
|
||
},
|
||
beforeDestroy() {
|
||
const el = this.$el.querySelector(".ec-canvas") || this.$el;
|
||
if (el) {
|
||
disposeChart(el);
|
||
}
|
||
},
|
||
methods: {
|
||
async setOption(option, oldOption) {
|
||
const el = this.$el.querySelector(".ec-canvas") || this.$el;
|
||
if (!el) {
|
||
console.error('[EChartsView] setOption: 找不到容器元素');
|
||
return;
|
||
}
|
||
|
||
// 检查 option 是否有效
|
||
if (!option || typeof option !== 'object') {
|
||
console.warn('[EChartsView] setOption: option 无效', option);
|
||
return;
|
||
}
|
||
|
||
// 检查是否使用了地图，如果是，先加载地图数据
|
||
const needsMap = option.geo || (option.series && Array.isArray(option.series) && option.series.some(s => s.type === 'map' && s.map === 'china'));
|
||
if (needsMap) {
|
||
await loadChinaMap();
|
||
}
|
||
|
||
// 保存 option 供 ensureChart 使用
|
||
el._pendingOption = option;
|
||
|
||
// 确保图表已初始化
|
||
let c = ensureChart(el);
|
||
if (!c) {
|
||
// 如果容器尺寸为 0，使用 ResizeObserver 等待容器尺寸可用
|
||
if (typeof ResizeObserver !== "undefined") {
|
||
let roTimeout = null;
|
||
const ro = new ResizeObserver(async (entries) => {
|
||
for (const entry of entries) {
|
||
const { width, height } = entry.contentRect;
|
||
if (width > 0 && height > 0) {
|
||
ro.disconnect();
|
||
if (roTimeout) clearTimeout(roTimeout);
|
||
c = ensureChart(el);
|
||
if (c && !c.isDisposed()) {
|
||
try {
|
||
// 如果使用地图，确保地图已加载
|
||
if (needsMap) {
|
||
await loadChinaMap();
|
||
}
|
||
const plainOption = JSON.parse(JSON.stringify(option));
|
||
c.setOption(plainOption, true);
|
||
requestAnimationFrame(() => {
|
||
const c2 = charts.get(getChartKey(el));
|
||
if (c2 && !c2.isDisposed()) {
|
||
try {
|
||
c2.resize({ width, height });
|
||
} catch (e) {
|
||
// 忽略已销毁的错误
|
||
}
|
||
}
|
||
});
|
||
} catch (e) {
|
||
console.error('[EChartsView] setOption 失败', e);
|
||
}
|
||
}
|
||
break;
|
||
}
|
||
}
|
||
});
|
||
ro.observe(el);
|
||
// 设置超时，避免无限等待（5秒后强制使用默认尺寸）
|
||
roTimeout = setTimeout(() => {
|
||
ro.disconnect();
|
||
console.warn('[EChartsView] ResizeObserver 超时，尝试使用默认尺寸初始化');
|
||
// 尝试使用父元素尺寸或默认值
|
||
const parentRect = el.parentElement ? el.parentElement.getBoundingClientRect() : null;
|
||
const defaultWidth = parentRect ? parentRect.width : 800;
|
||
const defaultHeight = parentRect ? parentRect.height : 400;
|
||
if (defaultWidth > 0 && defaultHeight > 0) {
|
||
el.style.width = defaultWidth + 'px';
|
||
el.style.height = defaultHeight + 'px';
|
||
c = ensureChart(el);
|
||
if (c && !c.isDisposed()) {
|
||
try {
|
||
const plainOption = JSON.parse(JSON.stringify(option));
|
||
c.setOption(plainOption, true);
|
||
} catch (e) {
|
||
console.error('[EChartsView] setOption 失败', e);
|
||
}
|
||
}
|
||
}
|
||
}, 5000);
|
||
} else {
|
||
// 兜底：延迟重试（最多3次）
|
||
let retryCount = 0;
|
||
const maxRetries = 3;
|
||
const retry = () => {
|
||
if (retryCount >= maxRetries) {
|
||
console.warn('[EChartsView] 重试次数过多，跳过初始化');
|
||
return;
|
||
}
|
||
retryCount++;
|
||
setTimeout(async () => {
|
||
if (needsMap) {
|
||
await loadChinaMap();
|
||
}
|
||
c = ensureChart(el);
|
||
if (c && !c.isDisposed()) {
|
||
try {
|
||
const plainOption = JSON.parse(JSON.stringify(option));
|
||
c.setOption(plainOption, true);
|
||
} catch (e) {
|
||
console.error('[EChartsView] setOption 失败', e);
|
||
}
|
||
} else if (retryCount < maxRetries) {
|
||
retry();
|
||
}
|
||
}, 200 * retryCount);
|
||
};
|
||
retry();
|
||
}
|
||
return;
|
||
}
|
||
|
||
// 检查图表是否已销毁
|
||
if (c.isDisposed()) {
|
||
console.warn('[EChartsView] setOption: 图表已销毁，重新初始化');
|
||
charts.delete(getChartKey(el));
|
||
if (needsMap) {
|
||
await loadChinaMap();
|
||
}
|
||
c = ensureChart(el);
|
||
if (!c) return;
|
||
}
|
||
|
||
try {
|
||
// 如果使用地图，确保地图已加载
|
||
if (needsMap) {
|
||
await loadChinaMap();
|
||
}
|
||
// 深拷贝 option 确保是纯 JS 对象
|
||
const plainOption = JSON.parse(JSON.stringify(option));
|
||
c.setOption(plainOption, true);
|
||
|
||
// 使用 requestAnimationFrame 避免 resize 警告
|
||
requestAnimationFrame(() => {
|
||
const key = getChartKey(el);
|
||
const c2 = charts.get(key);
|
||
if (c2 && !c2.isDisposed()) {
|
||
const rect = el.getBoundingClientRect();
|
||
if (rect.width > 0 && rect.height > 0) {
|
||
try {
|
||
c2.resize({ width: rect.width, height: rect.height });
|
||
} catch (e) {
|
||
// 忽略已销毁的错误（可能组件已卸载）
|
||
}
|
||
}
|
||
}
|
||
});
|
||
} catch (e) {
|
||
console.error('[EChartsView] setOption 失败', e, option);
|
||
}
|
||
},
|
||
},
|
||
};
|
||
</script>
|
||
|
||
<style>
|
||
.ec-wrap {
|
||
position: relative !important;
|
||
width: 100%;
|
||
height: 100%;
|
||
overflow: hidden; /* 防止 canvas 越界 */
|
||
}
|
||
|
||
.ec-canvas {
|
||
position: absolute !important;
|
||
left: 0;
|
||
right: 0;
|
||
top: 0;
|
||
bottom: 0;
|
||
width: 100% !important;
|
||
height: 100% !important;
|
||
display: block;
|
||
}
|
||
</style>
|