[jgrapht-users] Using JGrapht with SWING

[Diego O. <die...@gm...>]

I needed to change some lines of code to use JGRAPHT with
SWING, I want to share with you the code example of the page:

package animation;

import java.awt.Color;
import java.awt.Dimension;
import java.awt.Rectangle;
import java.awt.geom.Rectangle2D;
import java.util.HashMap;
import java.util.Map;
import org.jgraph.JGraph;
import org.jgraph.graph.DefaultGraphCell;
import org.jgraph.graph.GraphConstants;
import org.jgrapht.ListenableGraph;
import org.jgrapht.ext.JGraphModelAdapter;
import org.jgrapht.graph.DefaultEdge;
import org.jgrapht.graph.ListenableDirectedGraph;

/**
 * @author diego
 */
public class Graph {

    private static final Dimension DEFAULT_SIZE = new Dimension(530, 320);
    private JGraphModelAdapter m_jgAdapter;
    private JGraph jgraph = null;

    /**
     * @see java.applet.Applet#init().
     */
    public void run() {
        // create a JGraphT graph
        ListenableGraph g = new ListenableDirectedGraph(DefaultEdge.class);

        // create a visualization using JGraph, via an adapter
        m_jgAdapter = new JGraphModelAdapter(g);
        jgraph = new JGraph(m_jgAdapter);
        adjustDisplaySettings(jgraph);

        // add some sample data (graph manipulated via JGraphT)
        g.addVertex("v1");
        g.addVertex("v2");
        g.addVertex("v3");
        g.addVertex("v4");

        g.addEdge("v1", "v2");
        g.addEdge("v2", "v3");
        g.addEdge("v3", "v1");
        g.addEdge("v4", "v3");

        // position vertices nicely within JGraph component
        positionVertexAt("v1", 130, 40);
        positionVertexAt("v2", 60, 200);
        positionVertexAt("v3", 310, 230);
        positionVertexAt("v4", 380, 70);

        // that's all there is to it!...
    }

    private void adjustDisplaySettings(JGraph jg) {
        jg.setPreferredSize(DEFAULT_SIZE);
        jg.setBackground(Color.GRAY);
    }

    private void positionVertexAt(Object vertex, int x, int y) {
        DefaultGraphCell cell = m_jgAdapter.getVertexCell(vertex);
        Map attr = cell.getAttributes();
        Rectangle2D b = GraphConstants.getBounds(attr);

        GraphConstants.setBounds(attr, new Rectangle(x, y, (int)
b.getWidth(), (int) b.getHeight()));

        Map cellAttr = new HashMap();
        cellAttr.put(cell, attr);
        m_jgAdapter.edit(cellAttr, null, null, null);
    }

    public JGraph getJgraph() {
        return jgraph;
    }

    public void setJgraph(JGraph jgraph) {
        this.jgraph = jgraph;
    }
}



**********************************************

and to RUN it


package animation;

import javax.swing.JFrame;
import javax.swing.JPanel;
import org.jgraph.JGraph;

/**
 * @author diego
 */
public class TestGra {
    public static void main(String[] args) {
        JFrame f = new JFrame();
        f.setSize(500, 500);
        JPanel p = new JPanel();
        p.setSize(500, 500);

        Graph g = new Graph();
        g.run();

        JGraph jg = g.getJgraph();

        p.add(jg);

        f.add(p);
        f.setVisible(true);
    }
}

***********************************************************

I hope it help the beginners.

I'm using JGraph to animate Formal Languages.

-- 
Diego Oliveira
Mestrado em Sistemas e Computação UFRN