001/*
002 * $Id$
003 *
004 * Copyright 2009 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 */
022package org.jdesktop.swingx.plaf;
023
024import java.awt.Color;
025import java.awt.Font;
026
027import javax.swing.plaf.ComponentUI;
028import javax.swing.plaf.UIResource;
029
030/**
031 * Collection of helpers. Could move to LookAndFeelAddon?
032 * 
033 * @author Jeanette Winzenburg
034 */
035public class LookAndFeelUtils {
036
037    /**
038     * Returns the ui that is of type <code>klass</code>, or null if
039     * one can not be found.
040     */
041    public static Object getUIOfType(ComponentUI ui, Class<?> klass) {
042        if (klass.isInstance(ui)) {
043            return ui;
044        }
045        return null;
046    }
047    
048    /**
049     * Returns a Font based on the param which is not of type UIResource. 
050     * 
051     * @param font the base font
052     * @return a font not of type UIResource, may be null.
053     */
054    public static Font getAsNotUIResource(Font font) {
055        if (!(font instanceof UIResource)) return font;
056        // PENDING JW: correct way to create another font instance?
057       return font.deriveFont(font.getAttributes());
058    }
059    
060    /**
061     * Returns a Color based on the param which is not of type UIResource. 
062     * 
063     * @param color the base color
064     * @return a color not of type UIResource, may be null.
065     */
066    public static Color getAsNotUIResource(Color color) {
067        if (!(color instanceof UIResource)) return color;
068        // PENDING JW: correct way to create another color instance?
069        float[] rgb = color.getRGBComponents(null);
070        return new Color(rgb[0], rgb[1], rgb[2], rgb[3]);
071    }
072    
073
074}