unikn.dbis.univis.visualization.graph.VLegend.java Source code

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Here is the source code for unikn.dbis.univis.visualization.graph.VLegend.java

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/*
 * Copyright 2005-2006 UniVis Explorer development team.
 *
 * This file is part of UniVis Explorer
 * (http://phobos22.inf.uni-konstanz.de/univis).
 *
 * UniVis Explorer 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.
 *
 * Please see COPYING for the complete licence.
 */
package unikn.dbis.univis.visualization.graph;

import org.jfree.chart.JFreeChart;

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

/**
 * TODO: document me!!!
 * <p/>
 * <code>VLegend</code>.
 * <p/>
 * User: raedler, weiler
 * Date: 06.07.2006
 * Time: 00:14:42
 *
 * @author Roman R&auml;dle
 * @author Andreas Weiler
 * @version $Id$
 * @since UniVis Explorer 0.1
 */
public class VLegend extends JComponent {

    // TODO: document me!!!
    private JFreeChart chart;

    /**
     * TODO: document me!!!
     *
     * @param chart
     */
    public VLegend(JFreeChart chart) {
        this.chart = chart;

        setSize(new Dimension(400, 300));
    }

    /**
     * Calls the UI delegate's paint method, if the UI delegate
     * is non-<code>null</code>.  We pass the delegate a copy of the
     * <code>Graphics</code> object to protect the rest of the
     * paint code from irrevocable changes
     * (for example, <code>Graphics.translate</code>).
     * <p/>
     * If you override this in a subclass you should not make permanent
     * changes to the passed in <code>Graphics</code>. For example, you
     * should not alter the clip <code>Rectangle</code> or modify the
     * transform. If you need to do these operations you may find it
     * easier to create a new <code>Graphics</code> from the passed in
     * <code>Graphics</code> and manipulate it. Further, if you do not
     * invoker super's implementation you must honor the opaque property,
     * that is
     * if this component is opaque, you must completely fill in the background
     * in a non-opaque color. If you do not honor the opaque property you
     * will likely see visual artifacts.
     * <p/>
     * The passed in <code>Graphics</code> object might
     * have a transform other than the identify transform
     * installed on it.  In this case, you might get
     * unexpected results if you cumulatively apply
     * another transform.
     *
     * @param g the <code>Graphics</code> object to protect
     * @see #paint
     * @see javax.swing.plaf.ComponentUI
     */
    @Override
    protected void paintComponent(Graphics g) {

        if (g instanceof Graphics2D) {
            Graphics2D g2d = (Graphics2D) g;

            chart.getLegend().draw(g2d, getBounds());
        }
    }
}