148 lines
5.0 KiB
HTML
148 lines
5.0 KiB
HTML
<!--
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Copyright (c) 2006-2013, JGraph Ltd
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Orthogonal example for mxGraph. This example demonstrates the use
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of port constraints and orthogonal edge styles and handlers.
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-->
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<html>
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<head>
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<title>Orthogonal 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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// Enables guides
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mxGraphHandler.prototype.guidesEnabled = true;
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// Alt disables guides
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mxGuide.prototype.isEnabledForEvent = function(evt)
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{
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return !mxEvent.isAltDown(evt);
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};
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// Enables snapping waypoints to terminals
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mxEdgeHandler.prototype.snapToTerminals = true;
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// Enables orthogonal connect preview in IE
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mxConnectionHandler.prototype.movePreviewAway = false;
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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.disconnectOnMove = false;
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graph.foldingEnabled = false;
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graph.cellsResizable = false;
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graph.extendParents = false;
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graph.setConnectable(true);
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// Implements perimeter-less connection points as fixed points (computed before the edge style).
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graph.view.updateFixedTerminalPoint = function(edge, terminal, source, constraint)
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{
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mxGraphView.prototype.updateFixedTerminalPoint.apply(this, arguments);
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var pts = edge.absolutePoints;
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var pt = pts[(source) ? 0 : pts.length - 1];
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if (terminal != null && pt == null && this.getPerimeterFunction(terminal) == null)
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{
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edge.setAbsoluteTerminalPoint(new mxPoint(this.getRoutingCenterX(terminal),
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this.getRoutingCenterY(terminal)), source)
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}
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};
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// Changes the default edge style
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graph.getStylesheet().getDefaultEdgeStyle()['edgeStyle'] = 'orthogonalEdgeStyle';
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delete graph.getStylesheet().getDefaultEdgeStyle()['endArrow'];
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// Implements the connect preview
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graph.connectionHandler.createEdgeState = function(me)
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{
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var edge = graph.createEdge(null, null, null, null, null);
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return new mxCellState(this.graph.view, edge, this.graph.getCellStyle(edge));
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};
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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, '', 40, 40, 40, 30);
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v1.setConnectable(false);
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var v11 = graph.insertVertex(v1, null, '', 0.5, 0, 10, 40,
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'portConstraint=northsouth;', true);
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v11.geometry.offset = new mxPoint(-5, -5);
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var v12 = graph.insertVertex(v1, null, '', 0, 0.5, 10, 10,
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'portConstraint=west;shape=triangle;direction=west;perimeter=none;' +
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'routingCenterX=-0.5;routingCenterY=0;', true);
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v12.geometry.offset = new mxPoint(-10, -5);
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var v13 = graph.insertVertex(v1, null, '', 1, 0.5, 10, 10,
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'portConstraint=east;shape=triangle;direction=east;perimeter=none;' +
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'routingCenterX=0.5;routingCenterY=0;', true);
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v13.geometry.offset = new mxPoint(0, -5);
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var v2 = graph.addCell(graph.getModel().cloneCell(v1));
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v2.geometry.x = 200;
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v2.geometry.y = 60;
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var v3 = graph.addCell(graph.getModel().cloneCell(v1));
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v3.geometry.x = 40;
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v3.geometry.y = 150;
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var v4 = graph.addCell(graph.getModel().cloneCell(v1));
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v4.geometry.x = 200;
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v4.geometry.y = 170;
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graph.insertEdge(parent, null, '', v1.getChildAt(2), v2.getChildAt(1));
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graph.insertEdge(parent, null, '', v2.getChildAt(2), v3.getChildAt(1));
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graph.insertEdge(parent, null, '', v3.getChildAt(2), v4.getChildAt(1));
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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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