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): 012 * FOR ANY PART OF THE COVERED WORK IN WHICH THE COPYRIGHT IS OWNED BY 1T3XT, 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, 038 * serving PDFs on the fly in a web application, shipping iText with a closed 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}