graphpanel.java

UML设计测试工具

/*
 * USE - UML based specification environment
 * Copyright (C) 1999-2004 Mark Richters, University of Bremen
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of the
 * License, or (at your option) any later version.
 *
 * This program 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
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

/* $ProjectHeader: use 2-3-0-release.1 Mon, 12 Sep 2005 20:18:33 +0200 green $ */

package org.tzi.use.graph.layout;

import java.awt.*;
import java.util.Iterator;
import javax.swing.*;

import org.tzi.use.graph.DirectedEdge;
import org.tzi.use.graph.DirectedGraph;
import org.tzi.use.util.Log;

/** 
 * @version     $ProjectVersion: 2-3-0-release.1 $
 * @author      Mark Richters 
 */
public class GraphPanel extends JPanel {
    private Layout fLayout;

    public GraphPanel(Layout l) {
        fLayout = l;

        setBackground(Color.white);
        setLayout(null);
        setMinimumSize(new Dimension(50, 50));
        setPreferredSize(new Dimension(600, 500));
    }

    /**
     * Draws the panel.
     */
    public void paintComponent(Graphics g) {
        super.paintComponent(g);

        Log.setTrace(true);
        //      Log.trace(this, getBounds().toString());
        //      Log.trace(this, getInsets().toString());
    
        // respect borders
        Insets insets = getInsets();
        Rectangle r = getBounds();
        r.x += insets.left;
        r.y += insets.top;
        r.width -= insets.left + insets.right;
        r.height -= insets.top + insets.bottom;

        // System.out.println("paintComponent" + count++);

        g.setColor(Color.black);
        DirectedGraph graph = fLayout.graph();

        // draw edges
        Iterator edgeIter = graph.edgeIterator();
        while (edgeIter.hasNext() ) {
            DirectedEdge edge = (DirectedEdge) edgeIter.next();
            // Log.trace(this, edge.toString());
            LayoutNode source = (LayoutNode) edge.source();
            LayoutNode target = (LayoutNode) edge.target();
            int x1 = source.getX() * 80 + 30;
            int y1 = 50 + source.fLayer * 50;
            //          if (source.isDummy() )
            //          x1 += 5;
            int x2 = target.getX() * 80 + 30;
            int y2 = 50 + target.fLayer * 50;
            //          if (target.isDummy() )
            //          x2 += 5;
            g.drawLine(x1, y1, x2, y2);
        }

        // draw nodes
        Iterator nodeIter = graph.iterator();
        while (nodeIter.hasNext() ) {
            LayoutNode node = (LayoutNode) nodeIter.next();
            if (node.isDummy() ) 
                continue;
            int x = node.getX() * 80 + 30;
            int y = 50 + node.fLayer * 50;
            g.setColor(Color.white);
            g.fillRect(x - 10, y - 10, 20, 20);
            g.setColor(Color.black);
            g.drawRect(x - 10, y - 10, 20, 20);
            g.drawString(node.toString(), x - 7, y + 8);
        }
    }
}