2000-07-23 Rolf W. Rasmussen <rolfwr@ii.uib.no>

	* libjava/java/awt/image/ColorModel.java: New file, replaces the
	stub libjava/java/awt/ColorModel.java which was located in the
	wrong package.
	* libjava/java/awt/image/ComponentColorModel.java: New file.
	* libjava/java/awt/image/ComponentSampleModel.java: New file.
	* libjava/java/awt/image/DataBuffer.java: New file.
	* libjava/java/awt/image/DataBufferByte.java: New file.
	* libjava/java/awt/image/DataBufferInt.java: New file.
	* libjava/java/awt/image/DataBufferUShort.java: New file.
	* libjava/java/awt/image/DirectColorModel.java: New file.
	* libjava/java/awt/image/PackedColorModel.java: New file.
	* libjava/java/awt/image/Raster.java: New file.
	* libjava/java/awt/image/SampleModel.java: New file.
	* libjava/java/awt/image/SinglePixelPackedSampleModel.java: New
	file.
	* libjava/java/awt/image/IndexColorModel.java: New file.
	* libjava/java/awt/image/ImageConsumer.java: Removed import of
	java.awt.ColorModel stub.

	* gnu/gcj/util/BitMaskExtent.java: New file, utility class.
	* gnu/gcj/util/Buffers.java: New file, utility class.

	* libjava/Makefile.am: Updated to include new files.
	* libjava/Makefile.in: Rebuilt.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@35245 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 51 insertions, 0 deletions

diff --git a/libjava/gnu/gcj/awt/BitMaskExtent.java b/libjava/gnu/gcj/awt/BitMaskExtent.java
new file mode 100644
index 00000000000..2da39f86196
--- /dev/null
+++ b/libjava/gnu/gcj/awt/BitMaskExtent.java
@@ -0,0 +1,51 @@
+/* Copyright © 2000  Free Software Foundation
+
+   This file is part of libgcj.
+
+This software is copyrighted work licensed under the terms of the
+Libgcj License.  Please consult the file "LIBGCJ_LICENSE" for
+details.  */
+
+package gnu.gcj.awt;
+
+/** 
+ * Simple transparent utility class that can be used to perform bit
+ * mask extent calculations.
+ */
+public final class BitMaskExtent
+{
+  /** The number of the least significant bit of the bit mask extent. */
+  public byte leastSignificantBit;
+
+  /** The number of bits in the bit mask extent. */
+  public byte bitWidth;
+  
+  /**
+   * Set the bit mask. This will calculate and set the leastSignificantBit
+   * and bitWidth fields.
+   *
+   * @see #leastSignificantBit
+   * @see #bitWidth
+   */
+  public void setMask(long mask)
+  {
+    leastSignificantBit = 0;
+    bitWidth = 0;
+    if (mask == 0) return;
+    long shiftMask = mask;
+    for (; (shiftMask&1) == 0; shiftMask >>>=1) leastSignificantBit++;
+    for (; (shiftMask&1) != 0; shiftMask >>>=1) bitWidth++;
+    
+    if (shiftMask != 0)
+      throw new IllegalArgumentException("mask must be continuous");
+  }
+  
+  /** 
+   * Calculate the bit mask based on the values of the
+   * leastSignificantBit and bitWidth fields.
+   */
+  public long toMask()
+  {
+    return ((1<<bitWidth)-1) << leastSignificantBit;
+  }  
+}