001 /* ColorSpace.java -- transforms between color spaces 002 Copyright (C) 2000, 2002 Free Software Foundation 003 004 This file is part of GNU Classpath. 005 006 GNU Classpath is free software; you can redistribute it and/or modify 007 it under the terms of the GNU General Public License as published by 008 the Free Software Foundation; either version 2, or (at your option) 009 any later version. 010 011 GNU Classpath is distributed in the hope that it will be useful, but 012 WITHOUT ANY WARRANTY; without even the implied warranty of 013 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 014 General Public License for more details. 015 016 You should have received a copy of the GNU General Public License 017 along with GNU Classpath; see the file COPYING. If not, write to the 018 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 019 02110-1301 USA. 020 021 Linking this library statically or dynamically with other modules is 022 making a combined work based on this library. Thus, the terms and 023 conditions of the GNU General Public License cover the whole 024 combination. 025 026 As a special exception, the copyright holders of this library give you 027 permission to link this library with independent modules to produce an 028 executable, regardless of the license terms of these independent 029 modules, and to copy and distribute the resulting executable under 030 terms of your choice, provided that you also meet, for each linked 031 independent module, the terms and conditions of the license of that 032 module. An independent module is a module which is not derived from 033 or based on this library. If you modify this library, you may extend 034 this exception to your version of the library, but you are not 035 obligated to do so. If you do not wish to do so, delete this 036 exception statement from your version. */ 037 038 039 package java.awt.color; 040 041 import java.io.Serializable; 042 043 /** 044 * NEEDS DOCUMENTATION 045 * 046 * @author Rolf W. Rasmussen (rolfwr@ii.uib.no) 047 * @since 1.2 048 */ 049 public abstract class ColorSpace implements Serializable 050 { 051 /** 052 * Compatible with JDK 1.2+. 053 */ 054 private static final long serialVersionUID = -409452704308689724L; 055 056 public static final int TYPE_XYZ = 0; 057 public static final int TYPE_Lab = 1; 058 public static final int TYPE_Luv = 2; 059 public static final int TYPE_YCbCr = 3; 060 public static final int TYPE_Yxy = 4; 061 public static final int TYPE_RGB = 5; 062 public static final int TYPE_GRAY = 6; 063 public static final int TYPE_HSV = 7; 064 public static final int TYPE_HLS = 8; 065 public static final int TYPE_CMYK = 9; 066 // mysterious gap in the enumeration sequenece 067 public static final int TYPE_CMY = 11; 068 public static final int TYPE_2CLR = 12; 069 public static final int TYPE_3CLR = 13; 070 public static final int TYPE_4CLR = 14; 071 public static final int TYPE_5CLR = 15; 072 public static final int TYPE_6CLR = 16; 073 public static final int TYPE_7CLR = 17; 074 public static final int TYPE_8CLR = 18; 075 public static final int TYPE_9CLR = 19; 076 public static final int TYPE_ACLR = 20; 077 public static final int TYPE_BCLR = 21; 078 public static final int TYPE_CCLR = 22; 079 public static final int TYPE_DCLR = 23; 080 public static final int TYPE_ECLR = 24; 081 public static final int TYPE_FCLR = 25; 082 083 public static final int CS_sRGB = 1000; 084 public static final int CS_LINEAR_RGB = 1004; 085 public static final int CS_CIEXYZ = 1001; 086 public static final int CS_PYCC = 1002; 087 public static final int CS_GRAY = 1003; 088 089 private static final int CS_BASE = CS_sRGB; 090 private static final int CS_END = CS_LINEAR_RGB + 1; 091 private static final int CS_COUNT = CS_END - CS_BASE; 092 093 // Instances are lazily instantiated 094 private static final ColorSpace[] INSTANCES = new ColorSpace[CS_COUNT]; 095 096 /** 097 * @serial 098 */ 099 // Visible in subclass. 100 final int type; 101 102 /** 103 * @serial 104 */ 105 // Visible in subclass. 106 final int numComponents; 107 108 protected ColorSpace(int type, int numcomponents) 109 { 110 this.type = type; 111 numComponents = numcomponents; 112 } 113 114 public static ColorSpace getInstance(int colorspace) 115 { 116 if ((colorspace >= CS_BASE) && (colorspace < CS_END)) 117 { 118 int instanceIndex = colorspace - CS_BASE; 119 if (INSTANCES[instanceIndex] == null) 120 { 121 ICC_Profile profile = new ICC_Profile(colorspace); 122 INSTANCES[instanceIndex] = new ICC_ColorSpace(profile); 123 } 124 return INSTANCES[instanceIndex]; 125 } 126 throw new IllegalArgumentException("unknown/unsupported colorspace"); 127 } 128 129 public boolean isCS_sRGB() 130 { 131 return type == CS_sRGB; 132 } 133 134 /** 135 * Transforms a color value assumed to be in this ColorSpace into a value in 136 * the default CS_sRGB color space. 137 * 138 * @exception ArrayIndexOutOfBoundsException If array length is not at least 139 * the number of components in this ColorSpace. 140 */ 141 public abstract float[] toRGB(float[] colorvalue); 142 143 public abstract float[] fromRGB(float[] rgbvalue); 144 145 public abstract float[] toCIEXYZ(float[] colorvalue); 146 147 public abstract float[] fromCIEXYZ(float[] colorvalue); 148 149 public int getType() 150 { 151 return type; 152 } 153 154 public int getNumComponents() 155 { 156 return numComponents; 157 } 158 159 public String getName(int idx) 160 { 161 return "type " + type; 162 } 163 164 /** 165 * @since 1.4 166 */ 167 public float getMinValue(int idx) 168 { 169 if (idx < 0 || idx >= numComponents) 170 throw new IllegalArgumentException(); 171 return 0; 172 } 173 174 /** 175 * @since 1.4 176 */ 177 public float getMaxValue(int idx) 178 { 179 if (idx < 0 || idx >= numComponents) 180 throw new IllegalArgumentException(); 181 return 1; 182 } 183 } // class ColorSpace