js画图开发库--mxgraph--[edgetolerance-连接线调整.html]
双击鼠标选中连接线可进行调整!
<!Doctype html>
<html xmlns=http://www.w3.org/1999/xhtml>
<head>
<meta http-equiv=Content-Type content="text/html;charset=utf-8">
<title>连接线调整</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
{
// 去锯齿效果
mxRectangleShape.prototype.crisp = true;
// 覆盖的鼠标事件,此方法没有任何返回值
var mxGraphFireMouseEvent = mxGraph.prototype.fireMouseEvent;
mxGraph.prototype.fireMouseEvent = function(evtName, me, sender)
{
// 鼠标状态检查,无如何返回
if (me.getState() == null)
{
// 更新的图形坐标中的事件
if (me.graphX == null || me.graphY == null)
{
var pt = mxUtils.convertPoint(this.container, me.getX(), me.getY());
me.graphX = pt.x;
me.graphY = pt.y;
}
var cell = this.getCellAt(me.graphX, me.graphY);
if (this.getModel().isEdge(cell))
{
me.state = this.view.getState(cell);
if (me.state != null && me.state.shape != null)
{
graph.container.style.cursor = me.state.shape.node.style.cursor;
}
}
}
if (me.state == null)
{
graph.container.style.cursor = 'default';
}
mxGraphFireMouseEvent.apply(this, arguments);
};
// 复写鼠标双击事件, 调整连接线
var mxGraphDblClick = mxGraph.prototype.dblClick;
mxGraph.prototype.dblClick = function(evt, cell)
{
if (cell == null)
{
var pt = mxUtils.convertPoint(this.container,
mxEvent.getClientX(evt), mxEvent.getClientY(evt));
cell = this.getCellAt(pt.x, pt.y);
}
mxGraphDblClick.call(this, evt, cell);
};
// 在容器中创建图形
var graph = new mxGraph(container);
graph.setTolerance(20);
/ /在图形中创建默认组件
var parent = graph.getDefaultParent();
// 开启更新事务
graph.getModel().beginUpdate();
try
{
var v1 = graph.insertVertex(parent, null, 'Hello,', 120, 120, 80, 30);
var v2 = graph.insertVertex(parent, null, 'World!', 400, 250, 80, 30);
var e1 = graph.insertEdge(parent, null, '', v1, v2, 'edgeStyle=orthogonalEdgeStyle;');
var e2 = graph.insertEdge(parent, null, '', v2, v1, 'edgeStyle=orthogonalEdgeStyle;');
}
finally
{
// 结束更新事务
graph.getModel().endUpdate();
}
}
};
</script>
</head>
<!-- 页面载入时启动程序 -->
<body οnlοad="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;width:641px;height:481px;background:url('editors/images/grid.gif');cursor:default;">
</div>
</body>
</html>