Source for org.jfree.chart.plot.GreyPalette

   1: /* ===========================================================
   2:  * JFreeChart : a free chart library for the Java(tm) platform
   3:  * ===========================================================
   4:  *
   5:  * (C) Copyright 2000-2005, by Object Refinery Limited and Contributors.
   6:  *
   7:  * Project Info:  http://www.jfree.org/jfreechart/index.html
   8:  *
   9:  * This library is free software; you can redistribute it and/or modify it 
  10:  * under the terms of the GNU Lesser General Public License as published by 
  11:  * the Free Software Foundation; either version 2.1 of the License, or 
  12:  * (at your option) any later version.
  13:  *
  14:  * This library is distributed in the hope that it will be useful, but 
  15:  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 
  16:  * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public 
  17:  * License for more details.
  18:  *
  19:  * You should have received a copy of the GNU Lesser General Public
  20:  * License along with this library; if not, write to the Free Software
  21:  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, 
  22:  * USA.  
  23:  *
  24:  * [Java is a trademark or registered trademark of Sun Microsystems, Inc. 
  25:  * in the United States and other countries.]
  26:  *
  27:  * ----------------
  28:  * GreyPalette.java
  29:  * ----------------
  30:  * (C) Copyright 2002-2005, by David M. O'Donnell and Contributors.
  31:  *
  32:  * Original Author:  David M. O'Donnell;
  33:  * Contributor(s):   David Gilbert (for Object Refinery Limited);
  34:  *
  35:  * $Id: GreyPalette.java,v 1.1.2.1 2005/11/24 16:11:49 mungady Exp $
  36:  *
  37:  * Changes
  38:  * -------
  39:  * 26-Nov-2002 : Version 1 contributed by David M. O'Donnell (DG);
  40:  * 26-Mar-2003 : Implemented Serializable (DG);
  41:  *
  42:  */
  43: 
  44: package org.jfree.chart.plot;
  45: 
  46: import java.io.Serializable;
  47: 
  48: 
  49: /**
  50:  * A grey color palette.
  51:  *
  52:  * @author David M. O'Donnell.
  53:  */
  54: public class GreyPalette extends ColorPalette implements Serializable {
  55: 
  56:     /** For serialization. */
  57:     private static final long serialVersionUID = -2120941170159987395L;
  58:     
  59:     /**
  60:      * Creates a new palette.
  61:      */
  62:     public GreyPalette() {
  63:         super();
  64:         initialize();
  65:     }
  66: 
  67:     /**
  68:      * Intializes the palette's indices.
  69:      */
  70:     public void initialize() {
  71: 
  72:         setPaletteName("Grey");
  73: 
  74:         this.r = new int[256];
  75:         this.g = new int[256];
  76:         this.b = new int[256];
  77: 
  78:         this.r[0] = 255;
  79:         this.g[0] = 255;
  80:         this.b[0] = 255;
  81:         this.r[1] = 0;
  82:         this.g[1] = 0;
  83:         this.b[1] = 0;
  84: 
  85:         for (int i = 2; i < 256; i++) {
  86:             this.r[i] = i;
  87:             this.g[i] = i;
  88:             this.b[i] = i;
  89:         }
  90: 
  91:     }
  92: 
  93: }