js画图开发库--mxgraph--[orthogonal-正交.html]
![js画图开发库--mxgraph--[orthogonal-正交.html]](http://img.e-com-net.com/image/product/c1066cf165b04446845541edc32af348.png)
连接线的固定焦点：
<!Doctype html>
<html xmlns=http://www.w3.org/1999/xhtml>
<head>
<meta http-equiv=Content-Type content="text/html;charset=utf-8">
<title>正交示例</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()
{
// 检查浏览器支持
if (!mxClient.isBrowserSupported())
{
mxUtils.error('Browser is not supported!', 200, false);
}
else
{
// 去锯齿效果
mxShape.prototype.crisp = true;
// 启用导航线
mxGraphHandler.prototype.guidesEnabled = true;
// Alt 键禁用导航线
mxGuide.prototype.isEnabledForEvent = function(evt)
{
return !mxEvent.isAltDown(evt);
};
// 启用导航线自动连接目标元素
mxEdgeHandler.prototype.snapToTerminals = true;
// 在IE中启动正交连接预览
mxConnectionHandler.prototype.movePreviewAway = false;
// 在容器中创建图形
var graph = new mxGraph(container);
graph.disconnectOnMove = false;
graph.foldingEnabled = false;
graph.cellsResizable = false;
graph.extendParents = false;
graph.setConnectable(true);
// 实现连接点周边为固定点
graph.view.updateFixedTerminalPoint = function(edge, terminal, source, constraint)
{
mxGraphView.prototype.updateFixedTerminalPoint.apply(this, arguments);
var pts = edge.absolutePoints;
var pt = pts[(source) ? 0 : pts.length - 1];
if (terminal != null && pt == null && this.getPerimeterFunction(terminal) == null)
{
edge.setAbsoluteTerminalPoint(new mxPoint(this.getRoutingCenterX(terminal),
this.getRoutingCenterY(terminal)), source)
}
};
//更新默认的连接线样式
graph.getStylesheet().getDefaultEdgeStyle()['edgeStyle'] = 'orthogonalEdgeStyle';
delete graph.getStylesheet().getDefaultEdgeStyle()['endArrow'];
// 实现连接预览
graph.connectionHandler.createEdgeState = function(me)
{
var edge = graph.createEdge(null, null, null, null, null);
return new mxCellState(this.graph.view, edge, this.graph.getCellStyle(edge));
};
// 设置容器自动改变
//graph.setResizeContainer(true);
// 启用浏览器默认右键下拉菜单
new mxRubberband(graph);
// 创建默认窗体
var parent = graph.getDefaultParent();
// 开始更新事务
graph.getModel().beginUpdate();
try
{
var v1 = graph.insertVertex(parent, null, '', 40, 40, 40, 30);
v1.setConnectable(false);
var v11 = graph.insertVertex(v1, null, '', 0.5, 0, 10, 40,
'portConstraint=northsouth;', true);
v11.geometry.offset = new mxPoint(-5, -5);
var v12 = graph.insertVertex(v1, null, '', 0, 0.5, 10, 10,
'portConstraint=west;shape=triangle;direction=west;perimeter=none;' +
'routingCenterX=-0.5;routingCenterY=0;', true);
v12.geometry.offset = new mxPoint(-10, -5);
var v13 = graph.insertVertex(v1, null, '', 1, 0.5, 10, 10,
'portConstraint=east;shape=triangle;direction=east;perimeter=none;' +
'routingCenterX=0.5;routingCenterY=0;', true);
v13.geometry.offset = new mxPoint(0, -5);
var v2 = graph.addCell(graph.getModel().cloneCell(v1));
v2.geometry.x = 200;
v2.geometry.y = 60;
var v3 = graph.addCell(graph.getModel().cloneCell(v1));
v3.geometry.x = 40;
v3.geometry.y = 150;
var v4 = graph.addCell(graph.getModel().cloneCell(v1));
v4.geometry.x = 200;
v4.geometry.y = 170;
graph.insertEdge(parent, null, '', v1.getChildAt(2), v2.getChildAt(1));
graph.insertEdge(parent, null, '', v2.getChildAt(2), v3.getChildAt(1));
graph.insertEdge(parent, null, '', v3.getChildAt(2), v4.getChildAt(1));
}
finally
{
// 结束更新事务
graph.getModel().endUpdate();
}
}
};
</script>
</head>
<!-- 页面载入时启动程序 -->
<body onload="main(document.getElementById('graphContainer'))">
<!-- 创建带网格壁纸和曲线的一个容器 -->
<div id="graphContainer"
style="overflow:hidden;position:relative;width:321px;height:241px;background:url('editors/images/grid.gif');cursor:default;">
</div>
</body>
</html>