001    /* steelme theme manager for Java
002     * Copyright (C) 2000 - 2004 T.J. Willis
003     * 
004     * This program is free software; you can redistribute it and/or
005     * modify it under the terms of the GNU General Public License
006     * as published by the Free Software Foundation; either version 2
007     * of the License, or (at your option) any later version.
008     *      
009     * This program is distributed in the hope that it will be useful,
010     * but WITHOUT ANY WARRANTY; without even the implied warranty of
011     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
012     * GNU General Public License for more details.
013     *          
014     * You should have received a copy of the GNU General Public License
015     * along with this program; if not, write to the Free Software
016     * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
017     *  
018     * $Header: /cvsroot/steelme/steelme/src/net/sourceforge/steelme/LookAndFeelToCSS.java,v 1.2 2004/05/15 16:11:46 tj_willis Exp $
019     */
020    package net.sourceforge.steelme;
021    
022    import javax.swing.text.html.*;
023    import javax.swing.*;
024    import java.awt.Color;
025    
026    /**
027     * A pluggable strategy for converting a LookAndFeel to a Cascading
028     * Stylesheet.
029     * @author <a href="mailto:tj_willis@users.sourceforge.net"> T.J. Willis </a>
030     * @version 1.0
031     */
032    public abstract class LookAndFeelToCSS {
033    
034        /**
035         * Implementation will return a StyleSheet that represents the
036         * given LookAndFeel or UnsupportedLookAndFeelException if it cannot.
037         *
038         * @param laf a <code>LookAndFeel</code> value
039         * @return a <code>StyleSheet</code> value
040         * @exception UnsupportedLookAndFeelException if an error occurs
041         */
042        public abstract StyleSheet convert(LookAndFeel laf) throws UnsupportedLookAndFeelException;
043    
044    
045        /**
046         * Returns a string of the form "#FFFFFF" representing the given Color.
047         *
048         * @param c a <code>Color</code> value
049         * @return a <code>String</code> value
050         */
051        public static String hexString(Color c) {
052            String s = "#";
053            int v = 65536 * c.getRed() + 256 * c.getGreen() + c.getBlue();
054            s += Integer.toHexString(v);
055            return s;
056        }
057    }