198 lines
6.0 KiB
HTML
198 lines
6.0 KiB
HTML
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$Id: graphlayout.html,v 1.31 2011-04-28 15:31:10 gaudenz Exp $
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Copyright (c) 2006-2010, JGraph Ltd
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Graphlayout example for mxGraph. This example demonstrates using
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automatic graph layouts and listening to changes of the graph size
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to keep the container size in sync.
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-->
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<html>
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<head>
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<title>Graphlayout 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 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
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// 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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// Creates the graph inside the given container
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var graph = new mxGraph(container);
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// Disables basic selection and cell handling
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graph.setEnabled(false);
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// Changes the default vertex style in-place
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var style = graph.getStylesheet().getDefaultVertexStyle();
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style[mxConstants.STYLE_SHAPE] = mxConstants.SHAPE_ELLIPSE;
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style[mxConstants.STYLE_PERIMETER] = mxPerimeter.EllipsePerimeter;
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style[mxConstants.STYLE_GRADIENTCOLOR] = 'white';
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style[mxConstants.STYLE_FONTSIZE] = '10';
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// Updates the size of the container to match
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// the size of the graph when it changes. If
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// this is commented-out, and the DIV style's
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// overflow is set to "auto", then scrollbars
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// will appear for the diagram. If overflow is
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// set to "visible", then the diagram will be
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// visible even when outside the parent DIV.
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// With the code below, the parent DIV will be
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// resized to contain the complete graph.
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//graph.setResizeContainer(true);
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// Larger grid size yields cleaner layout result
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graph.gridSize = 40;
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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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// Creates a layout algorithm to be used
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// with the graph
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var layout = new mxFastOrganicLayout(graph);
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// Moves stuff wider apart than usual
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layout.forceConstant = 80;
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// Reference to the transition checkbox
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var animate = document.getElementById('animate');
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// Adds a button to execute the layout
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document.body.insertBefore(mxUtils.button('Circle Layout',
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function(evt)
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{
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graph.getModel().beginUpdate();
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try
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{
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// Creates a layout algorithm to be used
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// with the graph
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var circleLayout = new mxCircleLayout(graph);
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circleLayout.execute(parent);
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}
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catch (e)
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{
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throw e;
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}
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finally
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{
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if (animate.checked)
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{
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var morph = new mxMorphing(graph);
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morph.addListener(mxEvent.DONE, function()
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{
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graph.getModel().endUpdate();
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});
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morph.startAnimation();
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}
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else
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{
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graph.getModel().endUpdate();
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}
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}
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}
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), document.body.firstChild);
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// Adds a button to execute the layout
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document.body.insertBefore(mxUtils.button('Organic Layout',
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function(evt)
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{
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graph.getModel().beginUpdate();
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try
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{
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layout.execute(parent);
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}
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catch (e)
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{
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throw e;
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}
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finally
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{
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if (animate.checked)
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{
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// Default values are 6, 1.5, 20
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var morph = new mxMorphing(graph, 10, 1.7, 20);
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morph.addListener(mxEvent.DONE, function()
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{
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graph.getModel().endUpdate();
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});
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morph.startAnimation();
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}
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else
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{
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graph.getModel().endUpdate();
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}
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}
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}
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), document.body.firstChild);
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// Adds cells to the model in a single step
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graph.getModel().beginUpdate();
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var w = 30;
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var h = 30;
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try
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{
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var v1 = graph.insertVertex(parent, null, 'A', 0, 0, w, h);
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var v2 = graph.insertVertex(parent, null, 'B', 0, 0, w, h);
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var v3 = graph.insertVertex(parent, null, 'C', 0, 0, w, h);
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var v4 = graph.insertVertex(parent, null, 'D', 0, 0, w, h);
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var v5 = graph.insertVertex(parent, null, 'E', 0, 0, w, h);
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var v6 = graph.insertVertex(parent, null, 'F', 0, 0, w, h);
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var v7 = graph.insertVertex(parent, null, 'G', 0, 0, w, h);
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var v8 = graph.insertVertex(parent, null, 'H', 0, 0, w, h);
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var e1 = graph.insertEdge(parent, null, 'ab', v1, v2);
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var e2 = graph.insertEdge(parent, null, 'ac', v1, v3);
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var e3 = graph.insertEdge(parent, null, 'cd', v3, v4);
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var e4 = graph.insertEdge(parent, null, 'be', v2, v5);
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var e5 = graph.insertEdge(parent, null, 'cf', v3, v6);
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var e6 = graph.insertEdge(parent, null, 'ag', v1, v7);
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var e7 = graph.insertEdge(parent, null, 'gh', v7, v8);
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var e8 = graph.insertEdge(parent, null, 'gc', v7, v3);
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var e9 = graph.insertEdge(parent, null, 'gd', v7, v4);
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var e10 = graph.insertEdge(parent, null, 'eh', v5, v8);
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// Executes the layout
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layout.execute(parent);
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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 grogram -->
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<body onload="main(document.getElementById('graphContainer'))">
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<!-- Creates a container for the graph with a grid wallpaper. Make sure to define the position
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and overflow attributes! See comments on the adding of the size-listener on line 54 ff! -->
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<div id="graphContainer"
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style="overflow:visible;width:821px;height:641px;background:url('editors/images/grid.gif');">
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</div>
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<br>
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<input type="checkbox" id="animate" checked="checked"/> Transitions
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</body>
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</html>
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