zcy
/
maxGraph
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
maxGraph/javascript/examples/fixedpoints.html

227 lines
7.9 KiB
HTML
Raw Normal View History

Initial version, 1.10.0.5 release
2012-05-21 20:32:26 +00:00
<!--
2.3.0.0 release
2013-10-28 08:56:36 +00:00
Copyright (c) 2006-2013, JGraph Ltd
Initial version, 1.10.0.5 release
2012-05-21 20:32:26 +00:00
Fixed points example for mxGraph. This example demonstrates using
fixed connection points for connecting edges to vertices.
-->
<html>
<head>
<title>Fixed points example for mxGraph</title>
<!-- Sets the basepath for the library if not in same directory -->
<script type="text/javascript">
mxBasePath = '../src';
</script>
<!-- Loads and initializes the library -->
<script type="text/javascript" src="../src/js/mxClient.js"></script>
<!-- Example code -->
<script type="text/javascript">
// Program starts here. Creates a sample graph in the
// DOM node with the specified ID. This function is invoked
// from the onLoad event handler of the document (see below).
function main(container)
{
// Checks if the browser is supported
if (!mxClient.isBrowserSupported())
{
// Displays an error message if the browser is not supported.
mxUtils.error('Browser is not supported!', 200, false);
}
else
{
3.4.0.0 release
2015-08-28 13:41:48 +00:00
// Snaps to fixed points
mxConstraintHandler.prototype.intersects = function(icon, point, source, existingEdge)
{
return (!source || existingEdge) || mxUtils.intersects(icon.bounds, point);
};
// Special case: Snaps source of new connections to fixed points
// Without a connect preview in connectionHandler.createEdgeState mouseMove
// and getSourcePerimeterPoint should be overriden by setting sourceConstraint
// sourceConstraint to null in mouseMove and updating it and returning the
// nearest point (cp) in getSourcePerimeterPoint (see below)
var mxConnectionHandlerUpdateEdgeState = mxConnectionHandler.prototype.updateEdgeState;
mxConnectionHandler.prototype.updateEdgeState = function(pt, constraint)
{
if (pt != null && this.previous != null)
{
var constraints = this.graph.getAllConnectionConstraints(this.previous);
var nearestConstraint = null;
var dist = null;
for (var i = 0; i < constraints.length; i++)
{
var cp = this.graph.getConnectionPoint(this.previous, constraints[i]);
if (cp != null)
{
var tmp = (cp.x - pt.x) * (cp.x - pt.x) + (cp.y - pt.y) * (cp.y - pt.y);
if (dist == null || tmp < dist)
{
nearestConstraint = constraints[i];
dist = tmp;
}
}
}
if (nearestConstraint != null)
{
this.sourceConstraint = nearestConstraint;
}
// In case the edge style must be changed during the preview:
// this.edgeState.style['edgeStyle'] = 'orthogonalEdgeStyle';
// And to use the new edge style in the new edge inserted into the graph,
// update the cell style as follows:
//this.edgeState.cell.style = mxUtils.setStyle(this.edgeState.cell.style, 'edgeStyle', this.edgeState.style['edgeStyle']);
}
mxConnectionHandlerUpdateEdgeState.apply(this, arguments);
};
Initial version, 1.10.0.5 release
2012-05-21 20:32:26 +00:00
// Creates the graph inside the given container
var graph = new mxGraph(container);
graph.setConnectable(true);
3.4.0.0 release
2015-08-28 13:41:48 +00:00
//graph.connectionHandler.connectImage = new mxImage('images/connector.gif', 16, 16);
// Disables floating connections (only use with no connect image)
if (graph.connectionHandler.connectImage == null)
{
graph.connectionHandler.isConnectableCell = function(cell)
{
return false;
};
mxEdgeHandler.prototype.isConnectableCell = function(cell)
{
return graph.connectionHandler.isConnectableCell(cell);
};
}
Initial version, 1.10.0.5 release
2012-05-21 20:32:26 +00:00
graph.getAllConnectionConstraints = function(terminal)
{
if (terminal != null && this.model.isVertex(terminal.cell))
{
return [new mxConnectionConstraint(new mxPoint(0, 0), true),
new mxConnectionConstraint(new mxPoint(0.5, 0), true),
new mxConnectionConstraint(new mxPoint(1, 0), true),
new mxConnectionConstraint(new mxPoint(0, 0.5), true),
new mxConnectionConstraint(new mxPoint(1, 0.5), true),
new mxConnectionConstraint(new mxPoint(0, 1), true),
new mxConnectionConstraint(new mxPoint(0.5, 1), true),
new mxConnectionConstraint(new mxPoint(1, 1), true)];
}
return null;
};
3.4.0.0 release
2015-08-28 13:41:48 +00:00
// Connect preview
Initial version, 1.10.0.5 release
2012-05-21 20:32:26 +00:00
graph.connectionHandler.createEdgeState = function(me)
{
3.4.0.0 release
2015-08-28 13:41:48 +00:00
var edge = graph.createEdge(null, null, null, null, null, 'edgeStyle=orthogonalEdgeStyle');
Initial version, 1.10.0.5 release
2012-05-21 20:32:26 +00:00
return new mxCellState(this.graph.view, edge, this.graph.getCellStyle(edge));
};
// Enables rubberband selection
new mxRubberband(graph);
// Gets the default parent for inserting new cells. This
// is normally the first child of the root (ie. layer 0).
var parent = graph.getDefaultParent();
// Adds cells to the model in a single step
graph.getModel().beginUpdate();
try
{
var v1 = graph.insertVertex(parent, null, 'Hello,', 20, 20, 80, 60,
'shape=triangle;perimeter=trianglePerimeter');
var v2 = graph.insertVertex(parent, null, 'World!', 200, 150, 80, 60,
'shape=ellipse;perimeter=ellipsePerimeter');
var v3 = graph.insertVertex(parent, null, 'Hello,', 200, 20, 80, 30);
var e1 = graph.insertEdge(parent, null, '', v1, v2,
'edgeStyle=elbowEdgeStyle;elbow=horizontal;'+
'exitX=0.5;exitY=1;exitPerimeter=1;entryX=0;entryY=0;entryPerimeter=1;');
var e2 = graph.insertEdge(parent, null, '', v3, v2,
'edgeStyle=elbowEdgeStyle;elbow=horizontal;orthogonal=0;'+
'entryX=0;entryY=0;entryPerimeter=1;');
}
finally
{
// Updates the display
graph.getModel().endUpdate();
}
}
3.4.0.0 release
2015-08-28 13:41:48 +00:00
// Use this code to snap the source point for new connections without a connect preview,
// ie. without an overridden graph.connectionHandler.createEdgeState
/*
var mxConnectionHandlerMouseMove = mxConnectionHandler.prototype.mouseMove;
mxConnectionHandler.prototype.mouseMove = function(sender, me)
{
this.sourceConstraint = null;
mxConnectionHandlerMouseMove.apply(this, arguments);
};
var mxConnectionHandlerGetSourcePerimeterPoint = mxConnectionHandler.prototype.getSourcePerimeterPoint;
mxConnectionHandler.prototype.getSourcePerimeterPoint = function(state, pt, me)
{
var result = null;
if (this.previous != null && pt != null)
{
var constraints = this.graph.getAllConnectionConstraints(this.previous);
var nearestConstraint = null;
var nearest = null;
var dist = null;
for (var i = 0; i < constraints.length; i++)
{
var cp = this.graph.getConnectionPoint(this.previous, constraints[i]);
if (cp != null)
{
var tmp = (cp.x - pt.x) * (cp.x - pt.x) + (cp.y - pt.y) * (cp.y - pt.y);
if (dist == null || tmp < dist)
{
nearestConstraint = constraints[i];
nearest = cp;
dist = tmp;
}
}
}
if (nearestConstraint != null)
{
this.sourceConstraint = nearestConstraint;
result = nearest;
}
}
if (result == null)
{
result = mxConnectionHandlerGetSourcePerimeterPoint.apply(this, arguments);
}
return result;
};
*/
Initial version, 1.10.0.5 release
2012-05-21 20:32:26 +00:00
};
</script>
</head>
1.10.2.0 release
2012-07-20 10:35:30 +00:00
<!-- Page passes the container for the graph to the program -->
Initial version, 1.10.0.5 release
2012-05-21 20:32:26 +00:00
<body onload="main(document.getElementById('graphContainer'))">
<!-- Creates a container for the graph with a grid wallpaper -->
<div id="graphContainer"
1.10.4.1 release
2012-12-18 13:09:38 +00:00
style="overflow:hidden;position:relative;width:321px;height:241px;background:url('editors/images/grid.gif');cursor:default;">
Initial version, 1.10.0.5 release
2012-05-21 20:32:26 +00:00
</div>
</body>
</html>