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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html>
<!--
/* ==========================================
* JGraphT : a free Java graph-theory library
* ==========================================
*
* Project Info: http://jgrapht.sourceforge.net/
* Project Lead: Barak Naveh (http://sourceforge.net/users/barak_naveh)
*
* (C) Copyright 2003, by Barak Naveh and Contributors.
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
*/
/* ~~~~~~~~~~~~~~~~~~~
* visualizations.html
* ~~~~~~~~~~~~~~~~~~~
* (C) Copyright 2003, by Barak Naveh and Contributors.
*
* Original Author: Barak Naveh
* Contributor(s): -
*
* $Id: visualizations.html 677 2009-03-13 22:40:26Z perfecthash $
*
* Changes
* ~~~~~~~
* 03-Aug-2003 : Initial revision (BN);
*
*/
-->
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<meta name="Author" content="Barak Naveh">
<meta name="keywords" content="JGraphT, Java graph library, graph theory, free, java, LGPL, open-source">
<title>JGraphT visualization using JGraph</title>
</head>
<body>
<h1><font color="#cc3399">J</font>Graph<font color="#ffcc00">T</font> Visualizations<br>
<font size="5">via JGraph</font></h1>
<br>
<h2>THIS PAGE IS OUT OF DATE</h2>
Modern web browsers don't support applets directly, and <a href="https://github.com/jgrapht/jgrapht/issues/522">JGraphT is dropping support for JGraph and replacing it with JGraphX</a>. If you'd like to help with making this page work again, <a href="https://github.com/jgrapht/jgrapht/issues/523">here is the relevant github issue</a>.
<h2>Demo Applet</h2>
<p>The following applet shows how a JGraphT graph can be visualized using
<a href="http://www.jgraph.com/">JGraph</a>. Try to play and drag
around the vertices and edges to get the feel of it.</p>
<p><font color="#7AA1E6" size="2">Note: Java 1.3 or above must be installed for
this applet to work correctly.</font></p>
<br/>
<table align="center" border="1" bordercolor="#7AA1E6" style="border-collapse: collapse" >
<tr><td>
<applet width="550" height="330"
code="org._3pq.jgrapht.demo.JGraphAdapterDemo.class"
archive="./jgrapht-0.5.2.jar">
<param name="bgcolor" value="#ffffff">
Java 2 Standard Edition v 1.3 or above is required for this applet.<br/>
Download it from <a href="http://java.sun.com">http://java.sun.com</a>.
</applet>
</td></tr>
</table>
<DIV style="TEXT-ALIGN: center">a JGraphT graph visualized using JGraph.</DIV>
<p> </p>
<h2>How it Works</h2>
<p>It's very simple: the JGraphT library comes with an
adapter that makes JGraphT graphs compatible with JGraph. To visualize a JGraphT
graph you just need to initialize JGraph via that adapter. </p>
<p>Example code:</p>
<p>
<pre><i><font color="#b22222"> // create a JGraphT graph</font></i>
ListenableGraph g = <B><FONT color=#a020f0>new</FONT></B> ListenableDirectedGraph( DefaultEdge.class );
<i><font color="#b22222">// create a visualization using JGraph, via the adapter</font></i>
JGraph jgraph = <b><font color="#a020f0">new</font></b> JGraph( <b><font color="#a020f0">new</font></b> JGraphModelAdapter( g ) );
</pre>
</p>
<p>Is that all?! Yes, that's all. Any modification now made to the graph <code>g</code> will
automatically be reflected by the JGraph component.</p>
<p> </p>
<h2>Source Code of the Applet</h2>
<p>The full source code of this demo is listed below and is also included in the
JGraphT distribution (<a href="http://sourceforge.net/project/showfiles.php?group_id=86459">download now</a>).<br>
</p>
<div align="center">
<center>
<table border="1" bordercolor="#7AA1E6" bgcolor="white" cellpadding="20" style="border-collapse: collapse" cellspacing="0">
<tr>
<td align="left">
<PRE><B><FONT color=#a020f0>package</FONT></B> org.jgrapht.demo;
<B><FONT color=#a020f0>import</FONT></B> java.awt.Color;
<B><FONT color=#a020f0>import</FONT></B> java.awt.Dimension;
<B><FONT color=#a020f0>import</FONT></B> java.awt.Rectangle;
<B><FONT color=#a020f0>import</FONT></B> java.util.HashMap;
<B><FONT color=#a020f0>import</FONT></B> java.util.Map;
<B><FONT color=#a020f0>import</FONT></B> javax.swing.JApplet;
<B><FONT color=#a020f0>import</FONT></B> javax.swing.JFrame;
<B><FONT color=#a020f0>import</FONT></B> org.jgraph.JGraph;
<B><FONT color=#a020f0>import</FONT></B> org.jgraph.graph.DefaultGraphCell;
<B><FONT color=#a020f0>import</FONT></B> org.jgraph.graph.GraphConstants;
<B><FONT color=#a020f0>import</FONT></B> org.jgrapht.ListenableGraph;
<B><FONT color=#a020f0>import</FONT></B> org.jgrapht.ext.JGraphModelAdapter;
<B><FONT color=#a020f0>import</FONT></B> org.jgrapht.graph.ListenableDirectedGraph;
<B><FONT color=#a020f0>import</FONT></B> org.jgrapht.graph.DefaultEdge;
<I><FONT color=#b22222>/**
* A demo applet that shows how to use JGraph to visualize JGraphT graphs.
*
* @author Barak Naveh
*
* @since Aug 3, 2003
*/</FONT></I>
<B><FONT color=#a020f0>public</FONT></B> <B><FONT color=#a020f0>class</FONT></B> JGraphAdapterDemo <B><FONT color=#a020f0>extends</FONT></B> JApplet {
<B><FONT color=#a020f0>private</FONT></B> <B><FONT color=#a020f0>static</FONT></B> <B><FONT color=#a020f0>final</FONT></B> Color DEFAULT_BG_COLOR = Color.decode( <B><FONT color=#bc8f8f>"#FAFBFF"</FONT></B> );
<B><FONT color=#a020f0>private</FONT></B> <B><FONT color=#a020f0>static</FONT></B> <B><FONT color=#a020f0>final</FONT></B> Dimension DEFAULT_SIZE = <B><FONT color=#a020f0>new</FONT></B> Dimension( 530, 320 );
<I><FONT color=#b22222>//
</FONT></I> <B><FONT color=#a020f0>private</FONT></B> JGraphModelAdapter m_jgAdapter;
<I><FONT color=#b22222>/**
* @see java.applet.Applet#init().
*/</FONT></I>
<B><FONT color=#a020f0>public</FONT></B> <B><FONT color=#a020f0>void</FONT></B> init( ) {
<I><FONT color=#b22222>// create a JGraphT graph
</FONT></I> ListenableGraph g = <B><FONT color=#a020f0>new</FONT></B> ListenableDirectedGraph( DefaultEdge.class );
<I><FONT color=#b22222>// create a visualization using JGraph, via an adapter
</FONT></I> m_jgAdapter = <B><FONT color=#a020f0>new</FONT></B> JGraphModelAdapter( g );
JGraph jgraph = <B><FONT color=#a020f0>new</FONT></B> JGraph( m_jgAdapter );
adjustDisplaySettings( jgraph );
getContentPane( ).add( jgraph );
resize( DEFAULT_SIZE );
<I><FONT color=#b22222>// add some sample data (graph manipulated via JGraphT)
</FONT></I> g.addVertex( <B><FONT color=#bc8f8f>"v1"</FONT></B> );
g.addVertex( <B><FONT color=#bc8f8f>"v2"</FONT></B> );
g.addVertex( <B><FONT color=#bc8f8f>"v3"</FONT></B> );
g.addVertex( <B><FONT color=#bc8f8f>"v4"</FONT></B> );
g.addEdge( <B><FONT color=#bc8f8f>"v1"</FONT></B>, <B><FONT color=#bc8f8f>"v2"</FONT></B> );
g.addEdge( <B><FONT color=#bc8f8f>"v2"</FONT></B>, <B><FONT color=#bc8f8f>"v3"</FONT></B> );
g.addEdge( <B><FONT color=#bc8f8f>"v3"</FONT></B>, <B><FONT color=#bc8f8f>"v1"</FONT></B> );
g.addEdge( <B><FONT color=#bc8f8f>"v4"</FONT></B>, <B><FONT color=#bc8f8f>"v3"</FONT></B> );
<I><FONT color=#b22222>// position vertices nicely within JGraph component
</FONT></I> positionVertexAt( <B><FONT color=#bc8f8f>"v1"</FONT></B>, 130, 40 );
positionVertexAt( <B><FONT color=#bc8f8f>"v2"</FONT></B>, 60, 200 );
positionVertexAt( <B><FONT color=#bc8f8f>"v3"</FONT></B>, 310, 230 );
positionVertexAt( <B><FONT color=#bc8f8f>"v4"</FONT></B>, 380, 70 );
<I><FONT color=#b22222>// that's all there is to it!...
</FONT></I> }
<B><FONT color=#a020f0>private</FONT></B> <B><FONT color=#a020f0>void</FONT></B> adjustDisplaySettings( JGraph jg ) {
jg.setPreferredSize( DEFAULT_SIZE );
Color c = DEFAULT_BG_COLOR;
String colorStr = <B><FONT color=#a020f0>null</FONT></B>;
<B><FONT color=#a020f0>try</FONT></B> {
colorStr = getParameter( <B><FONT color=#bc8f8f>"bgcolor"</FONT></B> );
}
<B><FONT color=#a020f0>catch</FONT></B>( Exception e ) {}
<B><FONT color=#a020f0>if</FONT></B>( colorStr != <B><FONT color=#a020f0>null</FONT></B> ) {
c = Color.decode( colorStr );
}
jg.setBackground( c );
}
<B><FONT color=#a020f0>private</FONT></B> <B><FONT color=#a020f0>void</FONT></B> positionVertexAt( Object vertex, <B><FONT color=#a020f0>int</FONT></B> x, <B><FONT color=#a020f0>int</FONT></B> y ) {
DefaultGraphCell cell = m_jgAdapter.getVertexCell( vertex );
Map attr = cell.getAttributes( );
Rectangle b = GraphConstants.getBounds( attr );
GraphConstants.setBounds( attr, <B><FONT color=#a020f0>new</FONT></B> Rectangle( x, y, b.width, b.height ) );
Map cellAttr = <B><FONT color=#a020f0>new</FONT></B> HashMap( );
cellAttr.put( cell, attr );
m_jgAdapter.edit( cellAttr, null, null, null, null );
}
}</PRE>
</td>
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© Copyright 2003, by Barak Naveh and Contributors. All rights reserved.</small></td>
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<a href="http://sourceforge.net/projects/jgrapht"><img src="http://sflogo.sourceforge.net/sflogo.php?group_id=86459&type=12" width="120" height="30" border="0" alt="Get JGraphT at SourceForge.net. Fast, secure and Free Open Source software downloads" /></a>
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