[gui][patch] Kernel.java

[Jerry Quinn <jlquinn at optonline dot net>]

This implements Kernel.java.  Committed to java-gui-branch.

2004-07-14  Jerry Quinn  <jlquinn@optonline.net>

	* java/awt/image/Kernel.java: New file.
	* Makefile.am: Added new file.
	* Makefile.in: Regenerated.

diff -u /dev/null /home/jlquinn/gcc/dev/gcc/libjava/java/awt/image/Kernel.java
--- /dev/null	2004-06-16 22:59:06.000000000 -0400
+++ /home/jlquinn/gcc/dev/gcc/libjava/java/awt/image/Kernel.java	2004-07-14 00:09:46.000000000 -0400
@@ -0,0 +1,136 @@
+/* Kernel.java -- Java class for an image processing kernel
+   Copyright (C) 2004 Free Software Foundation, Inc.
+
+This file is part of GNU Classpath.
+
+GNU Classpath is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GNU Classpath is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU Classpath; see the file COPYING.  If not, write to the
+Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+02111-1307 USA.
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library.  Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module.  An independent module is a module which is not derived from
+or based on this library.  If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so.  If you do not wish to do so, delete this
+exception statement from your version. */
+
+
+package java.awt.image;
+
+/**
+ * Kernel represents an image processing kernel.  It gets used to hold
+ * convolution filters among other purposes.  It stores an array of float
+ * values representing a 2-dimensional array in row-major order.
+ *
+ * @author <a href="mailto:jlquinn@optonline.net";>Jerry Quinn</a>
+ * @version 1.0
+ */
+public class Kernel implements Cloneable
+{
+  private final int width;
+  private final int height;
+  private final float[] data;
+
+  /**
+   * Creates a new <code>Kernel</code> instance.
+   *
+   * @param width The 2D width of data.
+   * @param height The 2D height of data.
+   * @param data The source data array.
+   * @exception IllegalArgumentException if width * height < data.length.
+   */
+  public Kernel(int width, int height, float[] data)
+    throws IllegalArgumentException
+  {
+    this.width = width;
+    this.height = height;
+    if (data.length < width * height || width < 0 || height < 0)
+      throw new IllegalArgumentException();
+    this.data = new float[width * height];
+    System.arraycopy(data, 0, this.data, 0, width * height);
+  }
+
+  /**
+   * Return the X origin: (width - 1) / 2
+   */
+  public final int getXOrigin()
+  {
+    return (width - 1) / 2;
+  }
+
+  /**
+   * Return the Y origin: (height - 1) / 2
+   */
+  public final int getYOrigin()
+  {
+    return (height - 1) / 2;
+  }
+
+  /**
+   * @return The kernel width.
+   */
+  public final int getWidth()
+  {
+    return width;
+  }
+
+  /**
+   * @return The kernel height.
+   */
+  public final int getHeight()
+  {
+    return height;
+  }
+
+  /**
+   * Return the kernel data.
+   *
+   * If data is null, allocates a new array and returns it.  Otherwise, the
+   * kernel values are copied into data.
+   *
+   * @param data Array to copy values into, or null.
+   * @return The array with copied values.
+   * @exception IllegalArgumentException if data != null and too small.
+   */
+  public final float[] getKernelData(float[] data)
+    throws IllegalArgumentException
+  {
+    if (data == null)
+	return (float[])this.data.clone();
+
+    if (data.length < this.data.length)
+      throw new IllegalArgumentException();
+
+    System.arraycopy(this.data, 0, data, 0, this.data.length);
+    return data;
+  }
+
+  /**
+   * @return a clone of this Kernel.
+   */
+  public Object clone()
+  {
+    return new Kernel(width, height, data);
+  }
+}
Index: Makefile.am
===================================================================
RCS file: /cvs/gcc/gcc/libjava/Makefile.am,v
retrieving revision 1.361.2.25
diff -u -r1.361.2.25 Makefile.am
--- Makefile.am	12 Jul 2004 19:52:45 -0000	1.361.2.25
+++ Makefile.am	14 Jul 2004 04:41:45 -0000
@@ -1139,6 +1139,7 @@
 java/awt/image/DataBufferShort.java \
 java/awt/image/DataBufferUShort.java \
 java/awt/image/DirectColorModel.java \
+java/awt/image/Kernel.java \
 java/awt/image/ImageConsumer.java \
 java/awt/image/ImageObserver.java \
 java/awt/image/ImageProducer.java \
Index: Makefile.in
===================================================================
RCS file: /cvs/gcc/gcc/libjava/Makefile.in,v
retrieving revision 1.385.2.25
diff -u -r1.385.2.25 Makefile.in
--- Makefile.in	12 Jul 2004 19:52:45 -0000	1.385.2.25
+++ Makefile.in	14 Jul 2004 04:42:03 -0000
@@ -816,6 +816,7 @@
 java/awt/image/DataBufferShort.java \
 java/awt/image/DataBufferUShort.java \
 java/awt/image/DirectColorModel.java \
+java/awt/image/Kernel.java \
 java/awt/image/ImageConsumer.java \
 java/awt/image/ImageObserver.java \
 java/awt/image/ImageProducer.java \
@@ -3009,9 +3010,10 @@
 java/awt/image/DataBufferByte.lo java/awt/image/DataBufferDouble.lo \
 java/awt/image/DataBufferFloat.lo java/awt/image/DataBufferInt.lo \
 java/awt/image/DataBufferShort.lo java/awt/image/DataBufferUShort.lo \
-java/awt/image/DirectColorModel.lo java/awt/image/ImageConsumer.lo \
-java/awt/image/ImageObserver.lo java/awt/image/ImageProducer.lo \
-java/awt/image/IndexColorModel.lo java/awt/image/PackedColorModel.lo \
+java/awt/image/DirectColorModel.lo java/awt/image/Kernel.lo \
+java/awt/image/ImageConsumer.lo java/awt/image/ImageObserver.lo \
+java/awt/image/ImageProducer.lo java/awt/image/IndexColorModel.lo \
+java/awt/image/PackedColorModel.lo \
 java/awt/image/PixelInterleavedSampleModel.lo java/awt/image/Raster.lo \
 java/awt/image/RasterOp.lo java/awt/image/SampleModel.lo \
 java/awt/image/SinglePixelPackedSampleModel.lo \
@@ -4289,7 +4291,7 @@
 .deps/java/awt/image/ImageObserver.P \
 .deps/java/awt/image/ImageProducer.P \
 .deps/java/awt/image/ImagingOpException.P \
-.deps/java/awt/image/IndexColorModel.P \
+.deps/java/awt/image/IndexColorModel.P .deps/java/awt/image/Kernel.P \
 .deps/java/awt/image/MemoryImageSource.P \
 .deps/java/awt/image/PackedColorModel.P \
 .deps/java/awt/image/PixelGrabber.P \