<!-- Copyright (c) 2006-2013, JGraph Ltd Perimeter example for mxGraph. This example demonstrates how to avoid edge and label intersections. --> <html> <head> <title>Perimeter 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 { // Redirects the perimeter to the label bounds if intersection // between edge and label is found mxGraphViewGetPerimeterPoint = mxGraphView.prototype.getPerimeterPoint; mxGraphView.prototype.getPerimeterPoint = function(terminal, next, orthogonal, border) { var point = mxGraphViewGetPerimeterPoint.apply(this, arguments); if (point != null) { var perimeter = this.getPerimeterFunction(terminal); if (terminal.text != null && terminal.text.boundingBox != null) { // Adds a small border to the label bounds var b = terminal.text.boundingBox.clone(); b.grow(3) if (mxUtils.rectangleIntersectsSegment(b, point, next)) { point = perimeter(b, terminal, next, orthogonal); } } } return point; }; // Creates the graph inside the given container var graph = new mxGraph(container); graph.setVertexLabelsMovable(true); graph.setConnectable(true); // Uncomment the following if you want the container // to fit the size of the graph //graph.setResizeContainer(true); // 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, 'Label', 20, 20, 80, 30, 'verticalLabelPosition=bottom'); var v2 = graph.insertVertex(parent, null, 'Label', 200, 20, 80, 30, 'verticalLabelPosition=bottom'); var v3 = graph.insertVertex(parent, null, 'Label', 20, 150, 80, 30, 'verticalLabelPosition=bottom'); var e1 = graph.insertEdge(parent, null, '', v1, v2); var e1 = graph.insertEdge(parent, null, '', v1, v3); } finally { // Updates the display graph.getModel().endUpdate(); } } }; </script> </head> <!-- Page passes the container for the graph to the program --> <body onload="main(document.getElementById('graphContainer'))"> <!-- Creates a container for the graph with a grid wallpaper --> <div id="graphContainer" style="overflow:hidden;position:relative;width:321px;height:241px;background:url('editors/images/grid.gif');cursor:default;"> </div> </body> </html>