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Java > Open Source Codes > 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 JavaDoc;
47
48
49 /**
50  * A grey color palette.
51  *
52  * @author David M. O'Donnell.
53  */
54 public class GreyPalette extends ColorPalette implements Serializable JavaDoc {
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 }
94
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