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							- <!DOCTYPE html>
 
- <html lang="zh">
 
- 	<head>
 
- 		<meta charset="UTF-8">
 
- 		<meta name="viewport" content="width=device-width, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0, user-scalable=no">
 
- 		<meta http-equiv="X-UA-Compatible" content="ie=edge">
 
- 		<title></title>
 
- 		<style type="text/css">
 
- 			html,
 
- 			body,
 
- 			.ui-echarts {
 
- 				padding: 0;
 
- 				margin: 0;
 
- 				overflow: hidden;
 
- 				background-color: transparent;
 
- 				width: 100%;
 
- 				height: 100%;
 
- 			}
 
- 			.ui-echarts {
 
- 			}
 
- 		</style>
 
- 	</head>
 
- 	<body>
 
- 		<div class="ui-echarts" id="main" style="width: 100%;width: 100%;"></div>
 
- 		<script type="text/javascript" src="./uni.webview.1.5.4.js"></script>
 
- 		<script type="text/javascript" src="./echarts.min.js"></script>
 
- 		<!-- <script type="text/javascript" src="./ecStat.min.js"></script>
 
- 		<script type="text/javascript" src="./ecSimpleTransform.min.js"></script> -->
 
- 		<script type="text/javascript">
 
- 			let isReady = false;
 
- 			let uiChart = null;
 
- 			/**
 
- 			 * 1: 准备就绪(webview)
 
- 			 * 2: 初始化echarts
 
- 			 * 3: 设置echarts option
 
- 			 * 4: 导出图片
 
- 			 * 5: 销毁echarts实例
 
- 			 * */
 
- 			/**
 
- 			 * 初始化图表配置
 
- 			 * */
 
- 			function setOption (option) {
 
-  				if (!uiChart) {
 
- 					return;
 
- 				}
 
- 				uiChart.clear();
 
- 				uiChart.setOption(option);
 
- 				postMessage({ state: 3 });
 
- 			}
 
- 			/**
 
- 			 * 初始化图表
 
- 			 * */
 
- 			function initChart () {
 
- 				if (uiChart) {
 
- 					return;
 
- 				}
 
- 				uiChart = echarts.init(document.getElementById('main'));
 
- 				// echarts ready
 
- 				postMessage({ state: 2 });
 
- 			}
 
- 			/**
 
- 			 * 销毁实例
 
- 			 * */
 
- 			function clearChart() {
 
- 				if (uiChart) {
 
- 					return;
 
- 				}
 
- 				uiChart.clear();
 
- 				postMessage({ state: 5 });
 
- 			}
 
- 			/**
 
- 			 * 导出图片
 
- 			 * */
 
- 			function toImage () {
 
- 				const imageStr = uiChart.getDataURL({
 
- 					// [png|jpg|svg]注意:png, jpg 只有在 canvas 渲染器的时候可使用,svg 只有在使用 svg 渲染器的时候可用
 
- 					// type: 'png',
 
- 					// 导出的图片分辨率比例,默认为 1。
 
- 					pixelRatio: 2,
 
- 					backgroundColor: 'transparent',
 
- 					// 忽略组件的列表,例如要忽略 toolbox 就是 ['toolbox']
 
- 					// excludeComponents?: Array.<string>
 
- 				});
 
- 				postMessage({ state: 4, base64: imageStr });
 
- 			}
 
- 			/**
 
- 			 * 推送消息
 
- 			 * @onPostMessage
 
- 			 * */
 
- 			function postMessage (data) {
 
- 				if (!isReady) {
 
- 					console.error('ui-echarts 未准备就绪');
 
- 					return;
 
- 				}
 
- 				uni.postMessage({ data: data });
 
- 			}
 
- 			document.addEventListener('UniAppJSBridgeReady', function() {
 
- 				isReady = true;
 
- 				// ready
 
- 				postMessage({ state: 1 });
 
- 				// init
 
- 				initChart();
 
- 			});
 
- 		</script>
 
- 	</body>
 
- </html>
 
 
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