001    /*
002     * $Id: BasicTaskPaneContainerUI.java,v 1.4 2005/10/10 18:02:53 rbair Exp $
003     *
004     * Copyright 2004 Sun Microsystems, Inc., 4150 Network Circle,
005     * Santa Clara, California 95054, U.S.A. All rights reserved.
006     *
007     * This library is free software; you can redistribute it and/or
008     * modify it under the terms of the GNU Lesser General Public
009     * License as published by the Free Software Foundation; either
010     * version 2.1 of the License, or (at your option) any later version.
011     * 
012     * This library is distributed in the hope that it will be useful,
013     * but WITHOUT ANY WARRANTY; without even the implied warranty of
014     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
015     * Lesser General Public License for more details.
016     * 
017     * You should have received a copy of the GNU Lesser General Public
018     * License along with this library; if not, write to the Free Software
019     * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
020     */
021    package org.jdesktop.swingx.plaf.basic;
022    
023    import java.awt.Color;
024    import java.awt.GradientPaint;
025    import java.awt.Graphics;
026    import java.awt.Graphics2D;
027    import java.awt.Paint;
028    
029    import javax.swing.BorderFactory;
030    import javax.swing.JComponent;
031    import javax.swing.UIManager;
032    import javax.swing.plaf.ColorUIResource;
033    import javax.swing.plaf.ComponentUI;
034    
035    import org.jdesktop.swingx.JXTaskPaneContainer;
036    import org.jdesktop.swingx.VerticalLayout;
037    import org.jdesktop.swingx.plaf.TaskPaneContainerUI;
038    
039    /**
040     * Base implementation of the <code>JXTaskPaneContainer</code> UI.
041     * 
042     * @author <a href="mailto:fred@L2FProd.com">Frederic Lavigne</a>
043     */
044    public class BasicTaskPaneContainerUI extends TaskPaneContainerUI {
045    
046      public static ComponentUI createUI(JComponent c) {
047        return new BasicTaskPaneContainerUI();
048      }
049    
050      protected JXTaskPaneContainer taskPane;
051      protected boolean useGradient;
052      protected Color gradientStart;
053      protected Color gradientEnd;
054    
055      public void installUI(JComponent c) {
056        super.installUI(c);
057        taskPane = (JXTaskPaneContainer)c;
058        taskPane.setLayout(new VerticalLayout(14));
059        taskPane.setBorder(BorderFactory.createEmptyBorder(10, 10, 0, 10));
060        taskPane.setOpaque(true);
061    
062        if (taskPane.getBackground() == null
063          || taskPane.getBackground() instanceof ColorUIResource) {
064          taskPane
065            .setBackground(UIManager.getColor("TaskPaneContainer.background"));
066        }
067        
068        useGradient = UIManager.getBoolean("TaskPaneContainer.useGradient");
069        if (useGradient) {
070          gradientStart = UIManager
071          .getColor("TaskPaneContainer.backgroundGradientStart");
072          gradientEnd = UIManager
073          .getColor("TaskPaneContainer.backgroundGradientEnd");
074        }
075      }
076    
077      @Override
078      public void paint(Graphics g, JComponent c) {
079        Graphics2D g2d = (Graphics2D)g;
080        if (useGradient) {
081          Paint old = g2d.getPaint();
082          GradientPaint gradient = new GradientPaint(0, 0, gradientStart, 0, c
083            .getHeight(), gradientEnd);
084          g2d.setPaint(gradient);
085          g.fillRect(0, 0, c.getWidth(), c.getHeight());      
086          g2d.setPaint(old);
087        }
088      }
089    
090    }