1 files changed, 207 insertions, 0 deletions
diff --git a/gcc-4.4.3/libjava/classpath/gnu/java/awt/peer/gtk/GtkVolatileImage.java b/gcc-4.4.3/libjava/classpath/gnu/java/awt/peer/gtk/GtkVolatileImage.java
new file mode 100644
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+++ b/gcc-4.4.3/libjava/classpath/gnu/java/awt/peer/gtk/GtkVolatileImage.java
@@ -0,0 +1,207 @@
+/* GtkVolatileImage.java -- wraps an X pixmap
+   Copyright (C) 2005  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., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301 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 gnu.java.awt.peer.gtk;
+
+import java.awt.Graphics;
+import java.awt.Graphics2D;
+import java.awt.GraphicsConfiguration;
+import java.awt.ImageCapabilities;
+import java.awt.Point;
+import java.awt.image.BufferedImage;
+import java.awt.image.ColorModel;
+import java.awt.image.DataBuffer;
+import java.awt.image.DirectColorModel;
+import java.awt.image.ImageObserver;
+import java.awt.image.Raster;
+import java.awt.image.SampleModel;
+import java.awt.image.SinglePixelPackedSampleModel;
+import java.awt.image.VolatileImage;
+import java.awt.image.WritableRaster;
+
+public class GtkVolatileImage extends VolatileImage
+{
+  int width, height;
+  private ImageCapabilities caps;
+
+  final GtkComponentPeer component;
+
+  static ColorModel gdkColorModel = new DirectColorModel(32,
+                                                         0x000000FF,
+                                                         0x0000FF00,
+                                                         0x00FF0000,
+                                                         0xFF000000);
+                                                         
+  /**
+   * Don't touch, accessed from native code.
+   */
+  long nativePointer;
+
+  native long init(GtkComponentPeer component, int width, int height);
+
+  native void destroy(long pointer);
+
+  native int[] nativeGetPixels(long pointer);
+  
+  /**
+   * Gets the pixels in the current image from GDK.
+   * 
+   * Note that pixels are in 32-bit RGBA, non-premultiplied, which is different
+   * from Cairo's premultiplied ARGB, which is different from Java's standard
+   * non-premultiplied ARGB.  Caution is advised when using this method, to
+   * ensure that the data format remains consistent with what you expect.
+   *  
+   * @return the current pixels, as reported by GDK.
+   */
+  public int[] getPixels()
+  {
+    return nativeGetPixels(nativePointer);
+  }
+
+  native void nativeCopyArea(long pointer, int x, int y, int w, int h, int dx,
+                             int dy );
+  public void copyArea(int x, int y, int w, int h, int dx, int dy)
+  {
+    nativeCopyArea(nativePointer, x, y, w, h, dx, dy);
+  }
+
+  native void nativeDrawVolatile(long pointer, long srcPtr, int x, int y,
+                                 int w, int h );
+  public void drawVolatile(long srcPtr, int x, int y, int w, int h )
+  {
+    nativeDrawVolatile(nativePointer, srcPtr, x, y, w, h);
+  }
+
+  public GtkVolatileImage(GtkComponentPeer component, 
+			  int width, int height, ImageCapabilities caps)
+  {
+    this.width = width;
+    this.height = height;
+    this.caps = caps;
+    this.component = component;
+    nativePointer = init( component, width, height );
+  }
+
+  public GtkVolatileImage(int width, int height, ImageCapabilities caps)
+  {
+    this(null, width, height, caps);
+  }
+
+  public GtkVolatileImage(int width, int height)
+  {
+    this(null, width, height, null);
+  }
+
+  public void finalize()
+  {
+    dispose();
+  }
+
+  public void dispose()
+  {
+    destroy(nativePointer);
+  }
+
+  public BufferedImage getSnapshot()
+  {
+    WritableRaster raster = Raster.createWritableRaster(createGdkSampleModel(width, height),
+                                                        new Point(0, 0));
+    raster.setDataElements(0, 0, getPixels());
+    return new BufferedImage(gdkColorModel, raster,
+                             gdkColorModel.isAlphaPremultiplied(), null);
+  }
+
+  public Graphics getGraphics()
+  {
+    return createGraphics();
+  }
+
+  public Graphics2D createGraphics()
+  {
+    return new VolatileImageGraphics( this );
+  }
+
+  public int validate(GraphicsConfiguration gc)
+  {
+    return VolatileImage.IMAGE_OK;
+  }
+
+  public boolean contentsLost()
+  {
+    return false;
+  }
+
+  public ImageCapabilities getCapabilities()
+  {
+    return caps;
+  }
+
+  public int getWidth()
+  {
+    return width;
+  }
+
+  public int getHeight()
+  {
+    return height;
+  }
+
+  public int getWidth(java.awt.image.ImageObserver observer)
+  {
+    return width;
+  }
+  
+  public int getHeight(java.awt.image.ImageObserver observer)
+  {
+    return height;
+  }
+
+  public Object getProperty(String name, ImageObserver observer)
+  {
+    return null;
+  }
+  
+  /**
+   * Creates a SampleModel that matches GDK's native format
+   */
+  protected static SampleModel createGdkSampleModel(int w, int h)
+  {
+    return new SinglePixelPackedSampleModel(DataBuffer.TYPE_INT, w, h,
+                                            new int[]{0x000000FF, 0x0000FF00,
+                                                      0x00FF0000, 0xFF000000});
+  }
+}