js画图开发库--mxgraph--[merge-合并.html] -优快云博客

本文链接：https://blog.youkuaiyun.com/iteye_17920/article/details/82481589

本文通过mxGraph JavaScript库展示如何创建并合并两个图形实例。首先设置了图形的基本样式，然后在两个不同的图形中创建了节点与边，并进行了合并操作。此示例展示了如何处理图形元素的克隆与替换。

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js画图开发库--mxgraph--[merge-合并.html]

<!Doctype html>
<html xmlns=http://www.w3.org/1999/xhtml>
	<head>
	<meta http-equiv=Content-Type content="text/html;charset=utf-8">
	<title>合并</title>

	<!-- 如果本文件的包与src不是在同一个目录,就要将basepath设置到src目录下 -->
	<script type="text/javascript">
		mxBasePath = '../src';
	</script>

	<!-- 引入支持库文件 -->
	<script type="text/javascript" src="../src/js/mxClient.js"></script>
	<!-- 示例代码 -->
	<script type="text/javascript">
		// 程序在此方法中启动 
		function main(container)
		{
			// 检查浏览器支持
			if (!mxClient.isBrowserSupported())
			{
				mxUtils.error('Browser is not supported!', 200, false);
			}
			else
			{
				// 在容器中创建图形
				var graph = new mxGraph(container);

				// 设置元素大小是否可以调整
				graph.setCellsResizable(false);

				// 设置所有元都设置成圆形
				var style = graph.stylesheet.getDefaultVertexStyle();

				style[mxConstants.STYLE_SHAPE] = mxConstants.SHAPE_ELLIPSE;
				style[mxConstants.STYLE_PERIMETER] = mxPerimeter.EllipsePerimeter;
				style[mxConstants.STYLE_FONTCOLOR] = '#FFFFFF';
				style[mxConstants.STYLE_FONTSTYLE] = mxConstants.FONT_BOLD;

				// 设置所有元素标题为灰色，背景为白色
				style = graph.stylesheet.getDefaultEdgeStyle();

				style[mxConstants.STYLE_LABEL_BACKGROUNDCOLOR] = '#FFFFFF';
				style[mxConstants.STYLE_FONTCOLOR] = 'gray';
				
				// 使用浏览器默认的按键监听
				new mxRubberband(graph);
				
				// 创建默认窗体
				var parent = graph.getDefaultParent();
								
				// 开始更新事务
				graph.getModel().beginUpdate();
				try
				{
					var a = graph.insertVertex(parent, 'a', 'A', 20, 20, 20, 20, 'fillColor=blue');
					var b = graph.insertVertex(parent, 'b', 'B', 20, 200, 20, 20, 'fillColor=blue');
					var c = graph.insertVertex(parent, 'c', 'C', 200, 20, 20, 20, 'fillColor=red');
					var d = graph.insertVertex(parent, 'd', 'D', 200, 200, 20, 20, 'fillColor=red');
					var ac = graph.insertEdge(parent, 'ac', 'ac', a, c, 'strokeColor=blue');
					var ad = graph.insertEdge(parent, 'ad', 'ad', a, d, 'strokeColor=blue');
					var bd = graph.insertEdge(parent, 'bd', 'bd', b, d, 'strokeColor=blue');
				}
				finally
				{
					// 更新结束
					graph.getModel().endUpdate();
				}

				// 创建第二个不包含容器的图形
				var graph2 = new mxGraph();
				
				// 创建第二个默认窗体
				var parent2 = graph2.getDefaultParent();
								
				// 开启更新事务
				graph2.getModel().beginUpdate();
				try
				{
					var c = graph2.insertVertex(parent2, 'c', 'C', 200, 20, 20, 20, 'fillColor=green');
					var d = graph2.insertVertex(parent2, 'd', 'D', 200, 200, 20, 20, 'fillColor=green');
					var e = graph2.insertVertex(parent2, 'e', 'E', 400, 20, 20, 20, 'fillColor=green');
					var f = graph2.insertVertex(parent2, 'f', 'F', 400, 200, 20, 20, 'fillColor=green');
					var ce = graph2.insertEdge(parent2, 'ce', 'ce', c, e, 'strokeColor=green');
					var ed = graph2.insertEdge(parent2, 'ed', 'ed', e, d, 'strokeColor=green');
					var fd = graph2.insertEdge(parent2, 'bd', 'fd', f, d, 'strokeColor=green');
				}
				finally
				{
					// 结束更新事务
					graph2.getModel().endUpdate();
				}

				// Merges the model from the second graph into the model of  the first graph. 
				// Note: If you add a false to the parameter  list then _not_ all edges will be cloned, 
				//  that is, the edges are assumed to have an identity, and hence the edge  
				// "bd" will be changed to point from f to d, as specified in  the edge for the same id in the second graph.
				//graph.getModel().mergeChildren(parent2, parent/*, false*/);
				graph.getModel().mergeChildren(parent2, parent);
			}
		};
	</script>
</head>


<!-- 页面载入时启动程序 -->
<body οnlοad="main(document.getElementById('graphContainer'))" style="overflow:hidden;">

	<!-- 创建带网格壁纸和曲线的一个容器  -->
	<div id="graphContainer"
		style="position:absolute;overflow:hidden;width:100%;height:100%;">
	</div>
</body>
</html>