1 /* 2 * Copyright (c) 2003, 2014, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package com.sun.imageio.plugins.common; 27 28 import java.awt.color.ColorSpace; 29 30 /** 31 * A dummy <code>ColorSpace</code> to enable <code>ColorModel</code> 32 * for image data which do not have an innate color representation. 33 */ 34 @SuppressWarnings("serial") // JDK-implementation class 35 public class BogusColorSpace extends ColorSpace { 36 /** 37 * Return the type given the number of components. 38 * 39 * @param numComponents The number of components in the 40 * <code>ColorSpace</code>. 41 * @exception IllegalArgumentException if <code>numComponents</code> 42 * is less than 1. 43 */ 44 private static int getType(int numComponents) { 45 if(numComponents < 1) { 46 throw new IllegalArgumentException("numComponents < 1!"); 47 } 48 49 int type; 50 switch(numComponents) { 51 case 1: 52 type = ColorSpace.TYPE_GRAY; 53 break; 54 default: 55 // Based on the constant definitions TYPE_2CLR=12 through 56 // TYPE_FCLR=25. This will return unknown types for 57 // numComponents > 15. 58 type = numComponents + 10; 59 } 60 61 return type; 62 } 63 64 /** 65 * Constructs a bogus <code>ColorSpace</code>. 66 * 67 * @param numComponents The number of components in the 68 * <code>ColorSpace</code>. 69 * @exception IllegalArgumentException if <code>numComponents</code> 70 * is less than 1. 71 */ 72 public BogusColorSpace(int numComponents) { 73 super(getType(numComponents), numComponents); 74 } 75 76 // 77 // The following methods simply copy the input array to the 78 // output array while otherwise attempting to adhere to the 79 // specified behavior of the methods vis-a-vis exceptions. 80 // 81 82 public float[] toRGB(float[] colorvalue) { 83 if(colorvalue.length < getNumComponents()) { 84 throw new ArrayIndexOutOfBoundsException 85 ("colorvalue.length < getNumComponents()"); 86 } 87 88 float[] rgbvalue = new float[3]; 89 90 System.arraycopy(colorvalue, 0, rgbvalue, 0, 91 Math.min(3, getNumComponents())); 92 93 return colorvalue; 94 } 95 96 public float[] fromRGB(float[] rgbvalue) { 97 if(rgbvalue.length < 3) { 98 throw new ArrayIndexOutOfBoundsException 99 ("rgbvalue.length < 3"); 100 } 101 102 float[] colorvalue = new float[getNumComponents()]; 103 104 System.arraycopy(rgbvalue, 0, colorvalue, 0, 105 Math.min(3, colorvalue.length)); 106 107 return rgbvalue; 108 } 109 110 public float[] toCIEXYZ(float[] colorvalue) { 111 if(colorvalue.length < getNumComponents()) { 112 throw new ArrayIndexOutOfBoundsException 113 ("colorvalue.length < getNumComponents()"); 114 } 115 116 float[] xyzvalue = new float[3]; 117 118 System.arraycopy(colorvalue, 0, xyzvalue, 0, 119 Math.min(3, getNumComponents())); 120 121 return colorvalue; 122 } 123 124 public float[] fromCIEXYZ(float[] xyzvalue) { 125 if(xyzvalue.length < 3) { 126 throw new ArrayIndexOutOfBoundsException 127 ("xyzvalue.length < 3"); 128 } 129 130 float[] colorvalue = new float[getNumComponents()]; 131 132 System.arraycopy(xyzvalue, 0, colorvalue, 0, 133 Math.min(3, colorvalue.length)); 134 135 return xyzvalue; 136 } 137 }