diff options
Diffstat (limited to 'libjava/java/awt/image/ColorModel.java')
| -rw-r--r-- | libjava/java/awt/image/ColorModel.java | 120 |
1 files changed, 99 insertions, 21 deletions
diff --git a/libjava/java/awt/image/ColorModel.java b/libjava/java/awt/image/ColorModel.java index 87ab942917a..11615fdadfb 100644 --- a/libjava/java/awt/image/ColorModel.java +++ b/libjava/java/awt/image/ColorModel.java @@ -1,4 +1,5 @@ -/* Copyright (C) 1999, 2000, 2002, 2003 Free Software Foundation +/* ColorModel.java -- + Copyright (C) 1999, 2000, 2002, 2003, 2004 Free Software Foundation This file is part of GNU Classpath. @@ -37,11 +38,13 @@ exception statement from your version. */ package java.awt.image; -import java.util.Arrays; +import gnu.java.awt.Buffers; + import java.awt.Point; import java.awt.Transparency; import java.awt.color.ColorSpace; -import gnu.java.awt.Buffers; +import java.lang.reflect.Constructor; +import java.util.Arrays; /** * A color model operates with colors in several formats: @@ -76,8 +79,8 @@ import gnu.java.awt.Buffers; * * </ul> * - * @author Rolf W. Rasmussen <rolfwr@ii.uib.no> - * @author C. Brian Jones <cbj@gnu.org> + * @author Rolf W. Rasmussen (rolfwr@ii.uib.no) + * @author C. Brian Jones (cbj@gnu.org) */ public abstract class ColorModel implements Transparency { @@ -108,7 +111,7 @@ public abstract class ColorModel implements Transparency * Constructs the default color model. The default color model * can be obtained by calling <code>getRGBdefault</code> of this * class. - * @param b the number of bits wide used for bit size of pixel values + * @param bits the number of bits wide used for bit size of pixel values */ public ColorModel(int bits) { @@ -156,6 +159,32 @@ public abstract class ColorModel implements Transparency this.transferType = transferType; } + // This is a hook for ColorConvertOp to create a colormodel with + // a new colorspace + ColorModel cloneColorModel(ColorSpace cspace) + { + Class cls = this.getClass(); + ColorModel cm; + try { + // This constructor will exist. + Constructor ctor = + cls.getConstructor(new Class[]{int.class, int[].class, + ColorSpace.class, boolean.class, + boolean.class, int.class, int.class}); + cm = (ColorModel)ctor. + newInstance(new Object[]{new Integer(pixel_bits), + bits, cspace, Boolean.valueOf(hasAlpha), + Boolean.valueOf(isAlphaPremultiplied), + new Integer(transparency), + new Integer(transferType)}); + } + catch (Exception e) + { + throw new IllegalArgumentException(); + } + return cm; + } + public void finalize() { // Do nothing here. @@ -294,7 +323,7 @@ public abstract class ColorModel implements Transparency * This method is typically overriden in subclasses to provide a * more efficient implementation. * - * @param array of transferType containing a single pixel. The + * @param inData array of transferType containing a single pixel. The * pixel should be encoded in the natural way of the color model. */ public int getRed(Object inData) @@ -508,40 +537,89 @@ public abstract class ColorModel implements Transparency * <code>(pixel == cm.getDataElement(cm.getComponents(pixel, null, * 0), 0))</code>. * - * This method is typically overriden in subclasses to provide a - * more efficient implementation. + * This method is overriden in subclasses since this abstract class throws + * UnsupportedOperationException(). * - * @param arrays of unnormalized component samples of single - * pixel. The scale and multiplication state of the samples are - * according to the color model. Each component sample is stored - * as a separate element in the array. + * @param components Array of unnormalized component samples of single + * pixel. The scale and multiplication state of the samples are according + * to the color model. Each component sample is stored as a separate element + * in the array. + * @param offset Position of the first value of the pixel in components. * * @return pixel value encoded according to the color model. */ public int getDataElement(int[] components, int offset) { - // subclasses has to implement this method. + // subclasses have to implement this method. throw new UnsupportedOperationException(); } + /** + * Converts the normalized component samples from an array to a pixel + * value. I.e. composes the pixel from component samples, but does not + * perform any color conversion or scaling of the samples. + * + * This method is typically overriden in subclasses to provide a + * more efficient implementation. The method provided by this abstract + * class converts the components to unnormalized form and returns + * getDataElement(int[], int). + * + * @param components Array of normalized component samples of single pixel. + * The scale and multiplication state of the samples are according to the + * color model. Each component sample is stored as a separate element in the + * array. + * @param offset Position of the first value of the pixel in components. + * + * @return pixel value encoded according to the color model. + * @since 1.4 + */ public int getDataElement (float[] components, int offset) { - // subclasses has to implement this method. - throw new UnsupportedOperationException(); + return + getDataElement(getUnnormalizedComponents(components, offset, null, 0), + 0); } public Object getDataElements(int[] components, int offset, Object obj) { - // subclasses has to implement this method. + // subclasses have to implement this method. throw new UnsupportedOperationException(); } - public int getDataElements (float[] components, Object obj) + /** + * Converts the normalized component samples from an array to an array of + * TransferType values. I.e. composes the pixel from component samples, but + * does not perform any color conversion or scaling of the samples. + * + * If obj is null, a new array of TransferType is allocated and returned. + * Otherwise the results are stored in obj and obj is returned. If obj is + * not long enough, ArrayIndexOutOfBounds is thrown. If obj is not an array + * of primitives, ClassCastException is thrown. + * + * This method is typically overriden in subclasses to provide a + * more efficient implementation. The method provided by this abstract + * class converts the components to unnormalized form and returns + * getDataElement(int[], int, Object). + * + * @param components Array of normalized component samples of single pixel. + * The scale and multiplication state of the samples are according to the + * color model. Each component sample is stored as a separate element in the + * array. + * @param offset Position of the first value of the pixel in components. + * @param obj Array of TransferType or null. + * + * @return pixel value encoded according to the color model. + * @throws ArrayIndexOutOfBounds + * @throws ClassCastException + * @since 1.4 + */ + public Object getDataElements(float[] components, int offset, Object obj) { - // subclasses has to implement this method. - throw new UnsupportedOperationException(); + return + getDataElements(getUnnormalizedComponents(components, offset, null, 0), + 0, obj); } - + public boolean equals(Object obj) { if (!(obj instanceof ColorModel)) return false; |