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Java > Open Source Codes > com > lowagie > text > pdf > ExtendedColor


1 /*
2  * $Id: ExtendedColor.java 2367 2006-09-14 23:39:21Z xlv $
3  * $Name$
4  *
5  * Copyright 2001, 2002 by Paulo Soares.
6  *
7  * The contents of this file are subject to the Mozilla Public License Version 1.1
8  * (the "License"); you may not use this file except in compliance with the License.
9  * You may obtain a copy of the License at http://www.mozilla.org/MPL/
10  *
11  * Software distributed under the License is distributed on an "AS IS" basis,
12  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
13  * for the specific language governing rights and limitations under the License.
14  *
15  * The Original Code is 'iText, a free JAVA-PDF library'.
16  *
17  * The Initial Developer of the Original Code is Bruno Lowagie. Portions created by
18  * the Initial Developer are Copyright (C) 1999, 2000, 2001, 2002 by Bruno Lowagie.
19  * All Rights Reserved.
20  * Co-Developer of the code is Paulo Soares. Portions created by the Co-Developer
21  * are Copyright (C) 2000, 2001, 2002 by Paulo Soares. All Rights Reserved.
22  *
23  * Contributor(s): all the names of the contributors are added in the source code
24  * where applicable.
25  *
26  * Alternatively, the contents of this file may be used under the terms of the
27  * LGPL license (the "GNU LIBRARY GENERAL PUBLIC LICENSE"), in which case the
28  * provisions of LGPL are applicable instead of those above. If you wish to
29  * allow use of your version of this file only under the terms of the LGPL
30  * License and not to allow others to use your version of this file under
31  * the MPL, indicate your decision by deleting the provisions above and
32  * replace them with the notice and other provisions required by the LGPL.
33  * If you do not delete the provisions above, a recipient may use your version
34  * of this file under either the MPL or the GNU LIBRARY GENERAL PUBLIC LICENSE.
35  *
36  * This library is free software; you can redistribute it and/or modify it
37  * under the terms of the MPL as stated above or under the terms of the GNU
38  * Library General Public License as published by the Free Software Foundation;
39  * either version 2 of the License, or any later version.
40  *
41  * This library is distributed in the hope that it will be useful, but WITHOUT
42  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
43  * FOR A PARTICULAR PURPOSE. See the GNU Library general Public License for more
44  * details.
45  *
46  * If you didn't download this code from the following link, you should check if
47  * you aren't using an obsolete version:
48  * http://www.lowagie.com/iText/
49  */
50
51 package com.lowagie.text.pdf;
52
53 import java.awt.Color JavaDoc;
54 /**
55  *
56  * @author Paulo Soares (psoares@consiste.pt)
57  */
58 public class ExtendedColor extends Color JavaDoc{
59     
60     private static final long serialVersionUID = 2722660170712380080L;
61     /** a type of extended color. */
62     public static final int TYPE_RGB = 0;
63     /** a type of extended color. */
64     public static final int TYPE_GRAY = 1;
65     /** a type of extended color. */
66     public static final int TYPE_CMYK = 2;
67     /** a type of extended color. */
68     public static final int TYPE_SEPARATION = 3;
69     /** a type of extended color. */
70     public static final int TYPE_PATTERN = 4;
71     /** a type of extended color. */
72     public static final int TYPE_SHADING = 5;
73     
74     protected int type;
75
76     /**
77      * Constructs an extended color of a certain type.
78      * @param type
79      */
80     public ExtendedColor(int type) {
81         super(0, 0, 0);
82         this.type = type;
83     }
84     
85     /**
86      * Constructs an extended color of a certain type and a certain color.
87      * @param type
88      * @param red
89      * @param green
90      * @param blue
91      */
92     public ExtendedColor(int type, float red, float green, float blue) {
93         super(normalize(red), normalize(green), normalize(blue));
94         this.type = type;
95     }
96     
97     /**
98      * Gets the type of this color.
99      * @return one of the types (see constants)
100      */
101     public int getType() {
102         return type;
103     }
104     
105     /**
106      * Gets the type of a given color.
107      * @param color
108      * @return one of the types (see constants)
109      */
110     public static int getType(Color JavaDoc color) {
111         if (color instanceof ExtendedColor)
112             return ((ExtendedColor)color).getType();
113         return TYPE_RGB;
114     }
115
116     static final float normalize(float value) {
117         if (value < 0)
118             return 0;
119         if (value > 1)
120             return 1;
121         return value;
122     }
123 }
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