libjava/java/awt/color/ICC_ColorSpace.java

   1 /* ICC_ColorSpace.java -- the canonical color space implementation
   2    Copyright (C) 2000, 2002 Free Software Foundation
   3
   4 This file is part of GNU Classpath.
   5
   6 GNU Classpath is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 2, or (at your option)
   9 any later version.
  10
  11 GNU Classpath is distributed in the hope that it will be useful, but
  12 WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14 General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GNU Classpath; see the file COPYING.  If not, write to the
  18 Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  19 02111-1307 USA.
  20
  21 Linking this library statically or dynamically with other modules is
  22 making a combined work based on this library.  Thus, the terms and
  23 conditions of the GNU General Public License cover the whole
  24 combination.
  25
  26 As a special exception, the copyright holders of this library give you
  27 permission to link this library with independent modules to produce an
  28 executable, regardless of the license terms of these independent
  29 modules, and to copy and distribute the resulting executable under
  30 terms of your choice, provided that you also meet, for each linked
  31 independent module, the terms and conditions of the license of that
  32 module.  An independent module is a module which is not derived from
  33 or based on this library.  If you modify this library, you may extend
  34 this exception to your version of the library, but you are not
  35 obligated to do so.  If you do not wish to do so, delete this
  36 exception statement from your version. */
  37
  38
  39 package java.awt.color;
  40
  41 /**
  42  * NEEDS DOCUMENTATION
  43  *
  44  * @author Rolf W. Rasmussen <rolfwr@ii.uib.no>
  45  * @since 1.2
  46  */
  47 public class ICC_ColorSpace extends ColorSpace
  48 {
  49   /**
  50    * Compatible with JDK 1.2+.
  51    */
  52   private static final long serialVersionUID = 3455889114070431483L;
  53
  54   /**
  55    * @serial
  56    */
  57   private ICC_Profile thisProfile;
  58
  59   /**
  60    * @serial
  61    */
  62   private float[] minVal;
  63
  64   /**
  65    * @serial
  66    */
  67   private float[] maxVal;
  68
  69   /**
  70    * @serial
  71    */
  72   private float[] diffMinMax;
  73
  74   /**
  75    * @serial
  76    */
  77   private float[] invDiffMinMax;
  78
  79   /**
  80    * @serial
  81    */
  82   private boolean needScaleInit;
  83
  84   /**
  85    * Constructs a new ICC_ColorSpace from an ICC_Profile object.
  86    *
  87    * @exception IllegalArgumentException If profile is inappropriate for
  88    * representing a ColorSpace.
  89    */
  90   public ICC_ColorSpace(ICC_Profile profile)
  91   {
  92     super(CS_sRGB, profile.getNumComponents());
  93     thisProfile = profile;
  94   }
  95
  96   public ICC_Profile getProfile()
  97   {
  98     return thisProfile;
  99   }
 100
 101   /**
 102    * Transforms a color value assumed to be in this ColorSpace into a value in
 103    * the default CS_sRGB color space.
 104    *
 105    * @exception ArrayIndexOutOfBoundsException If array length is not at least
 106    * the number of components in this ColorSpace.
 107    */
 108   public float[] toRGB(float[] colorvalue)
 109   {
 110     if (colorvalue.length < numComponents)
 111       throw new IllegalArgumentException ();
 112
 113     // FIXME: Always assumes sRGB:
 114     return colorvalue;
 115   }
 116
 117   /**
 118    * Transforms a color value assumed to be in the default CS_sRGB color space
 119    * into this ColorSpace.
 120    *
 121    * @exception ArrayIndexOutOfBoundsException If array length is not at
 122    * least 3.
 123    */
 124   public float[] fromRGB(float[] rgbvalue)
 125   {
 126     if (rgbvalue.length < 3)
 127       throw new IllegalArgumentException ();
 128
 129     // FIXME: Always assumes sRGB:
 130     return rgbvalue;
 131   }
 132
 133   /**
 134    * Transforms a color value assumed to be in this ColorSpace into the
 135    * CS_CIEXYZ conversion color space.
 136    *
 137    * @exception ArrayIndexOutOfBoundsException If array length is not at
 138    * least the number of components in this ColorSpace.
 139    */
 140   public float[] toCIEXYZ(float[] colorvalue)
 141   {
 142     // FIXME: Not implemented
 143     throw new UnsupportedOperationException();
 144   }
 145
 146   /**
 147    * Transforms a color value assumed to be in the CS_CIEXYZ conversion color
 148    * space into this ColorSpace.
 149    *
 150    * @exception ArrayIndexOutOfBoundsException If array length is not at
 151    * least 3.
 152    */
 153   public float[] fromCIEXYZ(float[] colorvalue)
 154   {
 155     // FIXME: Not implemented
 156     throw new UnsupportedOperationException();
 157   }
 158
 159   /**
 160    * Returns the minimum normalized color component value for the specified
 161    * component.
 162    *
 163    * @exception IllegalArgumentException If component is less than 0 or greater
 164    * than numComponents - 1.
 165    *
 166    * @since 1.4
 167    */
 168   public float getMinValue(int idx)
 169   {
 170     if (type == TYPE_Lab && (idx == 1 || idx == 2))
 171       return -128;
 172     if (idx < 0 || idx >= numComponents)
 173       throw new IllegalArgumentException();
 174     return 0;
 175   }
 176
 177   /**
 178    * Returns the maximum normalized color component value for the specified
 179    * component.
 180    *
 181    * @exception IllegalArgumentException If component is less than 0 or greater
 182    * than numComponents - 1.
 183    *
 184    * @since 1.4
 185    */
 186   public float getMaxValue(int idx)
 187   {
 188     if (type == TYPE_XYZ && idx >= 0 && idx <= 2)
 189       return 1 + 32767 / 32768f;
 190     else if (type == TYPE_Lab)
 191       {
 192         if (idx == 0)
 193           return 100;
 194         if (idx == 1 || idx == 2)
 195           return 127;
 196       }
 197     if (idx < 0 || idx >= numComponents)
 198       throw new IllegalArgumentException();
 199     return 1;
 200   }
 201 } // class ICC_ColorSpace