106 lines
3.3 KiB
HTML
106 lines
3.3 KiB
HTML
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Copyright (c) 2006-2013, JGraph Ltd
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Perimeter example for mxGraph. This example demonstrates how to
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avoid edge and label intersections.
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-->
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<html>
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<head>
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<title>Perimeter example for mxGraph</title>
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<!-- Sets the basepath for the library if not in same directory -->
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<script type="text/javascript">
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mxBasePath = '../src';
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</script>
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<!-- Loads and initializes the library -->
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<script type="text/javascript" src="../src/js/mxClient.js"></script>
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<!-- Example code -->
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<script type="text/javascript">
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// Program starts here. Creates a sample graph in the
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// DOM node with the specified ID. This function is invoked
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// from the onLoad event handler of the document (see below).
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function main(container)
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{
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// Checks if the browser is supported
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if (!mxClient.isBrowserSupported())
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{
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// Displays an error message if the browser is not supported.
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mxUtils.error('Browser is not supported!', 200, false);
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}
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else
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{
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// Redirects the perimeter to the label bounds if intersection
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// between edge and label is found
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mxGraphViewGetPerimeterPoint = mxGraphView.prototype.getPerimeterPoint;
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mxGraphView.prototype.getPerimeterPoint = function(terminal, next, orthogonal, border)
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{
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var point = mxGraphViewGetPerimeterPoint.apply(this, arguments);
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if (point != null)
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{
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var perimeter = this.getPerimeterFunction(terminal);
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if (terminal.text != null && terminal.text.boundingBox != null)
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{
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// Adds a small border to the label bounds
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var b = terminal.text.boundingBox.clone();
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b.grow(3)
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if (mxUtils.rectangleIntersectsSegment(b, point, next))
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{
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point = perimeter(b, terminal, next, orthogonal);
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}
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}
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}
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return point;
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};
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// Creates the graph inside the given container
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var graph = new mxGraph(container);
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graph.setVertexLabelsMovable(true);
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graph.setConnectable(true);
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// Uncomment the following if you want the container
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// to fit the size of the graph
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//graph.setResizeContainer(true);
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// Enables rubberband selection
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new mxRubberband(graph);
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// Gets the default parent for inserting new cells. This
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// is normally the first child of the root (ie. layer 0).
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var parent = graph.getDefaultParent();
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// Adds cells to the model in a single step
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graph.getModel().beginUpdate();
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try
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{
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var v1 = graph.insertVertex(parent, null, 'Label', 20, 20, 80, 30, 'verticalLabelPosition=bottom');
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var v2 = graph.insertVertex(parent, null, 'Label', 200, 20, 80, 30, 'verticalLabelPosition=bottom');
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var v3 = graph.insertVertex(parent, null, 'Label', 20, 150, 80, 30, 'verticalLabelPosition=bottom');
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var e1 = graph.insertEdge(parent, null, '', v1, v2);
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var e1 = graph.insertEdge(parent, null, '', v1, v3);
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}
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finally
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{
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// Updates the display
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graph.getModel().endUpdate();
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}
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}
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};
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</script>
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</head>
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<!-- Page passes the container for the graph to the program -->
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<body onload="main(document.getElementById('graphContainer'))">
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<!-- Creates a container for the graph with a grid wallpaper -->
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<div id="graphContainer"
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style="overflow:hidden;position:relative;width:321px;height:241px;background:url('editors/images/grid.gif');cursor:default;">
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</div>
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</body>
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</html>
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