    001    /* ===========================================================
    002     * JFreeChart : a free chart library for the Java(tm) platform
    003     * ===========================================================
    004     *
    005     * (C) Copyright 2000-2005, by Object Refinery Limited and Contributors.
    006     *
    007     * Project Info:  http://www.jfree.org/jfreechart/index.html
    008     *
    009     * This library is free software; you can redistribute it and/or modify it
    010     * under the terms of the GNU Lesser General Public License as published by
    011     * the Free Software Foundation; either version 2.1 of the License, or
    012     * (at your option) any later version.
    013     *
    014     * This library is distributed in the hope that it will be useful, but
    015     * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
    016     * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
    017     * License for more details.
    018     *
    019     * You should have received a copy of the GNU Lesser General Public
    020     * License along with this library; if not, write to the Free Software
    021     * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
    022     * USA.
    023     *
    024     * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
    025     * in the United States and other countries.]
    026     *
    027     * ----------------
    028     * GreyPalette.java
    029     * ----------------
    030     * (C) Copyright 2002-2005, by David M. O'Donnell and Contributors.
    031     *
    032     * Original Author:  David M. O'Donnell;
    033     * Contributor(s):   David Gilbert (for Object Refinery Limited);
    034     *
    035     * $Id: GreyPalette.java,v 1.1.2.1 2005/11/24 16:11:49 mungady Exp $
    036     *
    037     * Changes
    038     * -------
    039     * 26-Nov-2002 : Version 1 contributed by David M. O'Donnell (DG);
    040     * 26-Mar-2003 : Implemented Serializable (DG);
    041     *
    042     */
    043
    044    package org.jfree.chart.plot;
    045
    046    import java.io.Serializable;
    047
    048
    049    /**
    050     * A grey color palette.
    051     *
    052     * @author David M. O'Donnell.
    053     */
    054    public class GreyPalette extends ColorPalette implements Serializable {
    055
    056        /** For serialization. */
    057        private static final long serialVersionUID = -2120941170159987395L;
    058
    059        /**
    060         * Creates a new palette.
    061         */
    062        public GreyPalette() {
    063            super();
    064            initialize();
    065        }
    066
    067        /**
    068         * Intializes the palette's indices.
    069         */
    070        public void initialize() {
    071
    072            setPaletteName("Grey");
    073
    074            this.r = new int[256];
    075            this.g = new int[256];
    076            this.b = new int[256];
    077
    078            this.r[0] = 255;
    079            this.g[0] = 255;
    080            this.b[0] = 255;
    081            this.r[1] = 0;
    082            this.g[1] = 0;
    083            this.b[1] = 0;
    084
    085            for (int i = 2; i < 256; i++) {
    086                this.r[i] = i;
    087                this.g[i] = i;
    088                this.b[i] = i;
    089            }
    090
    091        }
    092
    093    }