SimpleGraphDraw.java

package org.codehaus.mojo.graphing.pomo;

import java.io.IOException;

import javax.swing.JFrame;

import edu.uci.ics.jung.graph.Graph;
import edu.uci.ics.jung.io.PajekNetReader;
import edu.uci.ics.jung.visualization.PluggableRenderer;
import edu.uci.ics.jung.visualization.SpringLayout;
import edu.uci.ics.jung.visualization.VisualizationViewer;

/**
 * Illustrates the simplest possible drawing program.
 * Does the following:
 * <ul>
 * <li/>reads in a graph
 * <li/>creates a <code>Layout</code> based on that graph
 * <li/>creates a <code>Renderer</code>
 * <li/>creates a <code>VisualizationViewer</code> based on that layout and renderer
 * <li/>adds the <code>VisualizationViewer</code> object to a Swing <code>JFrame</code>'s
 * content pane.
 * </ul>
 * Does no processing, no filtering, and no customization of the rendering.
 *
 * @author danyelf
 */
public class SimpleGraphDraw
{

    public static void main( String[] args ) throws IOException
    {
        JFrame jf = new JFrame();
        Graph g = getGraph();
        VisualizationViewer vv = new VisualizationViewer( new SpringLayout( g ), new PluggableRenderer() );
        jf.getContentPane().add( vv );
        jf.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );
        jf.pack();
        jf.show();
    }

    /**
     * Generates a graph: in this case, reads it from the file
     * "samples/datasetsgraph/simple.net"
     *
     * @return A sample undirected graph
     */
    public static Graph getGraph() throws IOException
    {
        PajekNetReader pnr = new PajekNetReader();
        Graph g = pnr.load( "samples/datasets/simple.net" );
        return g;
    }
}