001/*
002 * $Id: BackgroundPainter.java 3954 2011-03-15 16:34:38Z kschaefe $
003 *
004 * Copyright 2010 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 */
021package org.jdesktop.swingx;
022
023import java.awt.Color;
024import java.awt.Graphics2D;
025import java.io.Serializable;
026
027import javax.swing.JComponent;
028import javax.swing.UIManager;
029
030import org.jdesktop.swingx.painter.Painter;
031
032/**
033 * A painter for handling backgrounds.
034 * 
035 * @author kschaefer
036 */
037class BackgroundPainter implements Painter<JComponent>, Serializable {
038    private final Color color;
039    
040    public BackgroundPainter(Color color) {
041        this.color = color;
042    }
043    
044    /**
045     * {@inheritDoc}
046     */
047    @Override
048    public void paint(Graphics2D g, JComponent object, int width, int height) {
049        if (color == null) {
050            return;
051        }
052        
053        if (object.isOpaque() || object instanceof AlphaPaintable || UIManager.getLookAndFeel().getID().equals("Nimbus")) {
054            g.setColor(color);
055            g.fillRect(0, 0, width, height);
056        }
057    }
058}