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diff --git a/gnu/java/awt/peer/gtk/CairoSurface.java b/gnu/java/awt/peer/gtk/CairoSurface.java
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+++ b/gnu/java/awt/peer/gtk/CairoSurface.java
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+/* CairoSurface.java
+   Copyright (C) 2006 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.Color;
+import java.awt.Image;
+import java.awt.Point;
+import java.awt.Graphics2D;
+import java.awt.GraphicsConfiguration;
+import java.awt.image.DataBuffer;
+import java.awt.image.Raster;
+import java.awt.image.WritableRaster;
+import java.awt.image.BufferedImage;
+import java.awt.image.ColorModel;
+import java.awt.image.DirectColorModel;
+import java.io.File;
+import java.io.IOException;
+import java.util.Hashtable;
+import java.util.Vector;
+import java.io.ByteArrayOutputStream;
+import java.io.BufferedInputStream;
+import java.net.URL;
+import gnu.classpath.Pointer;
+
+/**
+ * CairoSurface - wraps a Cairo surface.
+ *
+ * @author Sven de Marothy
+ */
+public class CairoSurface extends DataBuffer
+{
+  int width = -1, height = -1;
+
+  /**
+   * The native pointer to the Cairo surface. 
+   */
+  long surfacePointer;
+
+  /**
+   * The native pointer to the image's data buffer
+   */
+  long bufferPointer;
+
+
+  static ColorModel nativeModel = new DirectColorModel(32, 
+						       0x000000FF,
+						       0x0000FF00,
+						       0x00FF0000,
+						       0xFF000000);
+
+  /**
+   * Allocates and clears the buffer and creates the cairo surface.
+   * @param width, height - the image size
+   * @param stride - the buffer row stride.
+   */
+  private native void create(int width, int height, int stride);
+
+  /**
+   * Destroys the cairo surface and frees the buffer.
+   */
+  private native void destroy();
+
+  /**
+   * Gets buffer elements
+   */
+  private native int nativeGetElem(int i);
+  
+  /**
+   * Sets buffer elements.
+   */
+  private native void nativeSetElem(int i, int val);
+
+  /**
+   * Draws this image to a given CairoGraphics context, 
+   * with an affine transform given by i2u.
+   */
+  public native void drawSurface(CairoGraphics2D context, double[] i2u);
+
+  /**
+   * getPixels -return the pixels as a java array.
+   */
+  native int[] getPixels(int size);
+
+  /**
+   * getPixels -return the pixels as a java array.
+   */
+  native void setPixels(int[] pixels);
+
+  native long getFlippedBuffer(int size);
+
+  /**
+   * Create a cairo_surface_t with specified width and height.
+   * The format will be ARGB32 with premultiplied alpha and native bit 
+   * and word ordering.
+   */
+  CairoSurface(int width, int height)
+  {
+    super(DataBuffer.TYPE_INT, width * height);
+
+    if(width <= 0 || height <= 0)
+      throw new IllegalArgumentException("Image must be at least 1x1 pixels.");
+
+    this.width = width;
+    this.height = height;
+
+    create(width, height, width * 4);
+
+    if(surfacePointer == 0 || bufferPointer == 0)
+      throw new Error("Could not allocate bitmap.");
+  }
+
+  /**
+   * Create a cairo_surface_t from a GtkImage instance.
+   * (data is copied, not shared)
+   */
+  CairoSurface(GtkImage image)
+  {
+    super(DataBuffer.TYPE_INT, image.width * image.height);
+
+    if(image.width <= 0 || image.height <= 0)
+      throw new IllegalArgumentException("Image must be at least 1x1 pixels.");
+
+    width = image.width;
+    height = image.height;
+
+    create(width, height, width * 4);
+    
+    if(surfacePointer == 0 || bufferPointer == 0)
+      throw new Error("Could not allocate bitmap.");
+    
+    // Copy the pixel data from the GtkImage.
+    int[] data = image.getPixels();
+
+    // Swap ordering from GdkPixbuf to Cairo
+    for(int i = 0; i < data.length; i++ )
+      {
+	int alpha = (data[i] & 0xFF000000) >> 24;
+	if( alpha == 0 ) // I do not know why we need this, but it works.
+	  data[i] = 0;
+	else
+	  {
+	    int r = (((data[i] & 0x00FF0000) >> 16) );
+	    int g = (((data[i] & 0x0000FF00) >> 8) );
+	    int b = ((data[i] & 0x000000FF) );
+	    data[i] = (( alpha << 24 ) & 0xFF000000) 
+	      | (( b << 16 ) & 0x00FF0000)
+	      | (( g << 8 )  & 0x0000FF00)
+	      | ( r  & 0x000000FF);
+	  }
+      }
+
+    setPixels( data );
+  }
+
+  /**
+   * Dispose of the native data.
+   */
+  public void dispose()
+  {
+    if(surfacePointer != 0)
+      destroy();
+  }
+
+  /**
+   * Return a GtkImage from this Cairo surface.
+   */
+  public GtkImage getGtkImage()
+  {
+    return new GtkImage( width, height, getFlippedBuffer( width * height ));
+  }
+
+  /**
+   * Returns a BufferedImage backed by a Cairo surface.
+   */    
+  public static BufferedImage getBufferedImage(int width, int height)
+  {
+    return getBufferedImage(new CairoSurface(width, height));
+  }
+
+  /**
+   * Returns a BufferedImage backed by a Cairo surface, 
+   * created from a GtkImage.
+   */    
+  public static BufferedImage getBufferedImage(GtkImage image)
+  {
+    return getBufferedImage(new CairoSurface(image));
+  }
+
+  /**
+   * Returns a BufferedImage backed by a Cairo surface.
+   */    
+  public static BufferedImage getBufferedImage(CairoSurface surface)
+  {
+    WritableRaster raster = Raster.createPackedRaster
+      (surface, surface.width, surface.height, surface.width, 
+       new int[]{ 0x000000FF, 0x0000FF00, 0x00FF0000, 0xFF000000 },
+       new Point(0,0));
+
+    return new BufferedImage(nativeModel, raster, true, new Hashtable());
+  }
+
+  /**
+   * DataBank.getElem implementation
+   */
+  public int getElem(int bank, int i)
+  {
+    if(bank != 0 || i < 0 || i >= width*height)
+      throw new IndexOutOfBoundsException(i+" size: "+width*height);
+    return nativeGetElem(i);
+  }
+  
+  /**
+   * DataBank.setElem implementation
+   */
+  public void setElem(int bank, int i, int val)
+  {
+    if(bank != 0 || i < 0 || i >= width*height)
+      throw new IndexOutOfBoundsException(i+" size: "+width*height);
+    nativeSetElem(i, val);
+  }
+
+  /**
+   * Return a Graphics2D drawing to the CairoSurface.
+   */
+  public Graphics2D getGraphics()
+  {
+    return new CairoSurfaceGraphics(this);
+  } 
+
+  ///// Methods used by CairoSurfaceGraphics /////
+  /**
+   * Creates a cairo_t drawing context, returns the pointer as a long.
+   * Used by CairoSurfaceGraphics.
+   */
+  native long newCairoContext();
+
+  /**
+   * Copy an area of the surface. Expects parameters must be within bounds. 
+   * Count on a segfault otherwise.
+   */
+  native void copyAreaNative(int x, int y, int width, int height, 
+			     int dx, int dy, int stride);
+}