001/*
002 * $Id: ExtendedColor.java 4784 2011-03-15 08:33:00Z blowagie $
003 *
004 * This file is part of the iText (R) project.
005 * Copyright (c) 1998-2011 1T3XT BVBA
006 * Authors: Bruno Lowagie, Paulo Soares, et al.
007 *
008 * This program is free software; you can redistribute it and/or modify
009 * it under the terms of the GNU Affero General Public License version 3
010 * as published by the Free Software Foundation with the addition of the
011 * following permission added to Section 15 as permitted in Section 7(a):
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013 * 1T3XT DISCLAIMS THE WARRANTY OF NON INFRINGEMENT OF THIRD PARTY RIGHTS.
014 *
015 * This program is distributed in the hope that it will be useful, but
016 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
017 * or FITNESS FOR A PARTICULAR PURPOSE.
018 * See the GNU Affero General Public License for more details.
019 * You should have received a copy of the GNU Affero General Public License
020 * along with this program; if not, see http://www.gnu.org/licenses or write to
021 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
022 * Boston, MA, 02110-1301 USA, or download the license from the following URL:
023 * http://itextpdf.com/terms-of-use/
024 *
025 * The interactive user interfaces in modified source and object code versions
026 * of this program must display Appropriate Legal Notices, as required under
027 * Section 5 of the GNU Affero General Public License.
028 *
029 * In accordance with Section 7(b) of the GNU Affero General Public License,
030 * a covered work must retain the producer line in every PDF that is created
031 * or manipulated using iText.
032 *
033 * You can be released from the requirements of the license by purchasing
034 * a commercial license. Buying such a license is mandatory as soon as you
035 * develop commercial activities involving the iText software without
036 * disclosing the source code of your own applications.
037 * These activities include: offering paid services to customers as an ASP,
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039 * source product.
040 *
041 * For more information, please contact iText Software Corp. at this
042 * address: sales@itextpdf.com
043 */
044package com.itextpdf.text.pdf;
045
046import com.itextpdf.text.BaseColor;
047
048/**
049 *
050 * @author  Paulo Soares
051 */
052public abstract class ExtendedColor extends BaseColor{
053    
054        private static final long serialVersionUID = 2722660170712380080L;
055        /** a type of extended color. */
056    public static final int TYPE_RGB = 0;
057    /** a type of extended color. */
058    public static final int TYPE_GRAY = 1;
059    /** a type of extended color. */
060    public static final int TYPE_CMYK = 2;
061    /** a type of extended color. */
062    public static final int TYPE_SEPARATION = 3;
063    /** a type of extended color. */
064    public static final int TYPE_PATTERN = 4;
065    /** a type of extended color. */
066    public static final int TYPE_SHADING = 5;
067    
068    protected int type;
069
070    /**
071     * Constructs an extended color of a certain type.
072     * @param type
073     */
074    public ExtendedColor(int type) {
075        super(0, 0, 0);
076        this.type = type;
077    }
078    
079    /**
080     * Constructs an extended color of a certain type and a certain color.
081     * @param type
082     * @param red
083     * @param green
084     * @param blue
085     */
086    public ExtendedColor(int type, float red, float green, float blue) {
087        super(normalize(red), normalize(green), normalize(blue));
088        this.type = type;
089    }
090    /**
091     * Constructs an extended color of a certain type and a certain color.
092     * @param type
093     * @param red
094     * @param green
095     * @param blue
096     * @param alpha
097     */
098    public ExtendedColor(int type, int red, int green, int blue, int alpha) {
099        super(normalize((float)red / 0xFF), normalize((float)green / 0xFF), normalize((float)blue / 0xFF), normalize((float)alpha / 0xFF));
100                this.type = type;
101        }
102
103        /**
104     * Gets the type of this color.
105     * @return one of the types (see constants)
106     */
107    public int getType() {
108        return type;
109    }
110    
111    /**
112     * Gets the type of a given color.
113     * @param color
114     * @return one of the types (see constants)
115     */
116    public static int getType(BaseColor color) {
117        if (color instanceof ExtendedColor)
118            return ((ExtendedColor)color).getType();
119        return TYPE_RGB;
120    }
121
122    static final float normalize(float value) {
123        if (value < 0)
124            return 0;
125        if (value > 1)
126            return 1;
127        return value;
128    }
129}