- /*
- * @(#)BogusColorSpace.java 1.2 03/12/19 16:53:59
- *
- * Copyright 2004 Sun Microsystems, Inc. All rights reserved.
- * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
- */
-
- package com.sun.imageio.plugins.common;
-
- import java.awt.color.ColorSpace;
-
- /**
- * A dummy <code>ColorSpace</code> to enable <code>ColorModel</code>
- * for image data which do not have an innate color representation.
- */
- public class BogusColorSpace extends ColorSpace {
- /**
- * Return the type given the number of components.
- *
- * @param numComponents The number of components in the
- * <code>ColorSpace</code>.
- * @exception IllegalArgumentException if <code>numComponents</code>
- * is less than 1.
- */
- private static int getType(int numComponents) {
- if(numComponents < 1) {
- throw new IllegalArgumentException("numComponents < 1!");
- }
-
- int type;
- switch(numComponents) {
- case 1:
- type = ColorSpace.TYPE_GRAY;
- break;
- default:
- // Based on the constant definitions TYPE_2CLR=12 through
- // TYPE_FCLR=25. This will return unknown types for
- // numComponents > 15.
- type = numComponents + 10;
- }
-
- return type;
- }
-
- /**
- * Constructs a bogus <code>ColorSpace</code>.
- *
- * @param numComponents The number of components in the
- * <code>ColorSpace</code>.
- * @exception IllegalArgumentException if <code>numComponents</code>
- * is less than 1.
- */
- public BogusColorSpace(int numComponents) {
- super(getType(numComponents), numComponents);
- }
-
- //
- // The following methods simply copy the input array to the
- // output array while otherwise attempting to adhere to the
- // specified behavior of the methods vis-a-vis exceptions.
- //
-
- public float[] toRGB(float[] colorvalue) {
- if(colorvalue.length < getNumComponents()) {
- throw new ArrayIndexOutOfBoundsException
- ("colorvalue.length < getNumComponents()");
- }
-
- float[] rgbvalue = new float[3];
-
- System.arraycopy(colorvalue, 0, rgbvalue, 0,
- Math.min(3, getNumComponents()));
-
- return colorvalue;
- }
-
- public float[] fromRGB(float[] rgbvalue) {
- if(rgbvalue.length < 3) {
- throw new ArrayIndexOutOfBoundsException
- ("rgbvalue.length < 3");
- }
-
- float[] colorvalue = new float[getNumComponents()];
-
- System.arraycopy(rgbvalue, 0, colorvalue, 0,
- Math.min(3, colorvalue.length));
-
- return rgbvalue;
- }
-
- public float[] toCIEXYZ(float[] colorvalue) {
- if(colorvalue.length < getNumComponents()) {
- throw new ArrayIndexOutOfBoundsException
- ("colorvalue.length < getNumComponents()");
- }
-
- float[] xyzvalue = new float[3];
-
- System.arraycopy(colorvalue, 0, xyzvalue, 0,
- Math.min(3, getNumComponents()));
-
- return colorvalue;
- }
-
- public float[] fromCIEXYZ(float[] xyzvalue) {
- if(xyzvalue.length < 3) {
- throw new ArrayIndexOutOfBoundsException
- ("xyzvalue.length < 3");
- }
-
- float[] colorvalue = new float[getNumComponents()];
-
- System.arraycopy(xyzvalue, 0, colorvalue, 0,
- Math.min(3, colorvalue.length));
-
- return xyzvalue;
- }
- }