* Makefile.am: Added rules for libgcjx library.

	* Makefile.in: Rebuilt.
	* configure.in: Added check for X.
	* configure: Rebuilt.
	* gnu/awt/LightweightRedirector.java: New file.
	* gnu/awt/j2d/AbstractGraphicsState.java: New file.
	* gnu/awt/j2d/DirectRasterGraphics.java: New file.
	* gnu/awt/j2d/Graphics2DImpl.java: New file.
	* gnu/awt/j2d/IntegerGraphicsState.java: New file.
	* gnu/awt/j2d/MappedRaster.java: New file.
	* gnu/awt/xlib/XCanvasPeer.java: New file.
	* gnu/awt/xlib/XEventLoop.java: New file.
	* gnu/awt/xlib/XEventQueue.java: New file.
	* gnu/awt/xlib/XFontMetrics.java: New file.
	* gnu/awt/xlib/XFramePeer.java: New file.
	* gnu/awt/xlib/XGraphics.java: New file.
	* gnu/awt/xlib/XGraphicsConfiguration.java: New file.
	* gnu/awt/xlib/XPanelPeer.java: New file.
	* gnu/awt/xlib/XToolkit.java: New file.
	* gnu/gcj/xlib/Clip.java: New file.
	* gnu/gcj/xlib/Colormap.java: New file.
	* gnu/gcj/xlib/Display.java: New file.
	* gnu/gcj/xlib/Drawable.java: New file.
	* gnu/gcj/xlib/Font.java: New file.
	* gnu/gcj/xlib/GC.java: New file.
	* gnu/gcj/xlib/Pixmap.java: New file.
	* gnu/gcj/xlib/Screen.java: New file.
	* gnu/gcj/xlib/Visual.java: New file.
	* gnu/gcj/xlib/WMSizeHints.java: New file.
	* gnu/gcj/xlib/Window.java: New file.
	* gnu/gcj/xlib/WindowAttributes.java: New file.
	* gnu/gcj/xlib/XAnyEvent.java: New file.
	* gnu/gcj/xlib/XButtonEvent.java: New file.
	* gnu/gcj/xlib/XColor.java: New file.
	* gnu/gcj/xlib/XConfigureEvent.java: New file.
	* gnu/gcj/xlib/XConnectException.java: New file.
	* gnu/gcj/xlib/XEvent.java: New file.
	* gnu/gcj/xlib/XException.java: New file.
	* gnu/gcj/xlib/XExposeEvent.java: New file.
	* gnu/gcj/xlib/XID.java: New file.
	* gnu/gcj/xlib/XImage.java: New file.
	* gnu/gcj/xlib/XUnmapEvent.java: New file.
	* gnu/gcj/xlib/natClip.cc: New file.
	* gnu/gcj/xlib/natColormap.cc: New file.
	* gnu/gcj/xlib/natDisplay.cc: New file.
	* gnu/gcj/xlib/natDrawable.cc: New file.
	* gnu/gcj/xlib/natFont.cc: New file.
	* gnu/gcj/xlib/natGC.cc: New file.
	* gnu/gcj/xlib/natPixmap.cc: New file.
	* gnu/gcj/xlib/natScreen.cc: New file.
	* gnu/gcj/xlib/natVisual.cc: New file.
	* gnu/gcj/xlib/natWMSizeHints.cc: New file.
	* gnu/gcj/xlib/natWindow.cc: New file.
	* gnu/gcj/xlib/natWindowAttributes.cc: New file.
	* gnu/gcj/xlib/natXAnyEvent.cc: New file.
	* gnu/gcj/xlib/natXButtonEvent.cc: New file.
	* gnu/gcj/xlib/natXColor.cc: New file.
	* gnu/gcj/xlib/natXConfigureEvent.cc: New file.
	* gnu/gcj/xlib/natXException.cc: New file.
	* gnu/gcj/xlib/natXExposeEvent.cc: New file.
	* gnu/gcj/xlib/natXImage.cc: New file.
	* gnu/gcj/xlib/natXUnmapEvent.cc: New file.
	* java/awt/EventDispatchThread.java: Start thead on creation.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@37005 138bc75d-0d04-0410-961f-82ee72b054a4

5 files changed, 1145 insertions, 0 deletions

diff --git a/libjava/gnu/awt/j2d/AbstractGraphicsState.java b/libjava/gnu/awt/j2d/AbstractGraphicsState.java
new file mode 100644
index 00000000000..e3b3ec61599
--- /dev/null
+++ b/libjava/gnu/awt/j2d/AbstractGraphicsState.java
@@ -0,0 +1,128 @@
+/* Copyright (C) 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.awt.j2d;
+
+import java.awt.Color;
+import java.awt.Image;
+import java.awt.Shape;
+import java.awt.Rectangle;
+import java.awt.Graphics;
+import java.awt.Graphics2D;
+import java.awt.GraphicsConfiguration;
+import java.awt.Font;
+import java.awt.FontMetrics;
+import java.awt.image.ImageObserver;
+
+/**
+ * Base class for graphics state objects (State pattern, GOF book)
+ * that represents the current pipeline configuration. The Graphics2D
+ * object forwards most of the requests to the state object. The
+ * Graphics2D object itself only administers properties that are not
+ * specific for a certain state.
+ */
+public abstract class AbstractGraphicsState implements Cloneable
+{
+  Graphics2DImpl frontend;
+
+  public void setFrontend(Graphics2DImpl frontend)
+  {
+    this.frontend = frontend;
+  }
+  
+  public void dispose()
+  {
+    frontend = null;
+  }
+
+  // -------- Graphics methods:
+  
+  public abstract void setColor(Color color);
+
+  public abstract void setPaintMode();
+
+  public abstract void setXORMode(Color altColor);
+
+  public abstract void setFont(Font font);
+
+  public abstract FontMetrics getFontMetrics(Font font);
+
+  public abstract void setClip(Shape clip);
+
+  public abstract Shape getClip();
+  public abstract Rectangle getClipBounds();
+
+  public abstract void copyArea(int x, int y, 
+				int width, int height,
+				int dx, int dy);
+
+  public abstract void drawLine(int x1, int y1,
+				int x2, int y2);
+  
+  public abstract void fillRect(int x, int y,
+				int width, int height);
+  
+  public abstract void clearRect(int x, int y,
+				 int width, int height);
+  
+  public abstract void drawRoundRect(int x, int y,
+				     int width, int height,
+				     int arcWidth, int arcHeight);
+  
+  public abstract void fillRoundRect(int x, int y,
+				     int width, int height,
+				     int arcWidth, int arcHeight);
+  
+  public abstract void drawOval(int x, int y,
+				int width, int height);
+  
+  public abstract void fillOval(int x, int y,
+				int width, int height);
+  
+  public abstract void drawArc(int x, int y,
+			       int width, int height,
+			       int startAngle, int arcAngle);
+  
+  public abstract void fillArc(int x, int y,
+			       int width, int height,
+			       int startAngle, int arcAngle);
+  
+  public abstract void drawPolyline(int[] xPoints, int[] yPoints,int nPoints);
+
+  public abstract void drawPolygon(int[] xPoints, int[] yPoints, int nPoints);
+    
+  public abstract void fillPolygon(int[] xPoints, int[] yPoints, int nPoints);
+
+  public abstract boolean drawImage(Image image, int x, int y,
+				    ImageObserver observer);
+    
+
+  // -------- Graphics2D methods:
+
+  public abstract void draw(Shape shape);
+
+  public abstract void fill(Shape shape);
+    
+  public abstract boolean hit(Rectangle rect, Shape text, boolean onStroke);
+  
+  public abstract void drawString(String text, int x, int y);
+  
+  public abstract void drawString(String text, float x, float y);
+  
+  public abstract void translate(int x, int y);
+  
+  public abstract void translate(double tx, double ty);
+  
+  public abstract void rotate(double theta);
+  
+  public abstract void rotate(double theta, double x, double y);
+  
+  public abstract void scale(double scaleX, double scaleY);
+  
+  public abstract void shear(double shearX, double shearY);
+}
diff --git a/libjava/gnu/awt/j2d/DirectRasterGraphics.java b/libjava/gnu/awt/j2d/DirectRasterGraphics.java
new file mode 100644
index 00000000000..6bbdbd1d23e
--- /dev/null
+++ b/libjava/gnu/awt/j2d/DirectRasterGraphics.java
@@ -0,0 +1,82 @@
+/* Copyright (C) 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.awt.j2d;
+
+import java.awt.Color;
+import java.awt.Image;
+import java.awt.Shape;
+import java.awt.Rectangle;
+import java.awt.Graphics;
+import java.awt.Graphics2D;
+import java.awt.GraphicsConfiguration;
+import java.awt.Font;
+import java.awt.FontMetrics;
+import java.awt.image.Raster;
+import java.awt.image.ImageObserver;
+
+/**
+ * Interface for a simple pixel based backend graphics object that
+ * does not handle translation/transforms, curves, nor advanced
+ * compositing.
+ */
+public interface DirectRasterGraphics extends Cloneable
+{
+  public void dispose();
+  
+  public void setColor(Color color);
+  
+  public void setPaintMode();
+  
+  public void setXORMode(Color altColor);
+  
+  public void setFont(Font font);
+  
+  public FontMetrics getFontMetrics(Font font);
+  
+  // supports rects, multi-rects and polygons
+  public void setClip(Shape clip);
+  
+  public void copyArea(int x, int y, int width, int height,
+		       int dx, int dy);
+  
+  public void drawLine(int x1, int y1, int x2, int y2);
+  
+  public void drawRect(int x, int y, int width, int height);
+  
+  public void fillRect(int x, int y, int width, int height);
+  
+  public void drawArc(int x, int y, int width, int height,
+		      int startAngle, int arcAngle);
+  
+  public void fillArc(int x, int y, int width, int height,
+		      int startAngle, int arcAngle);
+  
+  public void drawPolyline(int[] xPoints, int[] yPoints, int nPoints);
+  
+  public void drawPolygon(int[] xPoints, int[] yPoints, int nPoints);
+  
+  public void fillPolygon(int[] xPoints, int[] yPoints, int nPoints);
+  
+  public void drawString(String str, int x, int y);
+  
+  public boolean drawImage(Image image, int x, int y,
+			   ImageObserver observer);
+
+  /**
+   * Map the data for screen pixels in the requested bounds to a
+   * raster object.  This gives read/write access to the screen
+   * pixels, allowing neat alpha and composite tricks.
+   */
+  public MappedRaster mapRaster(Rectangle bounds);
+  
+  /**
+   * Detach previously mapped pixel data from a raster object.
+   */
+  public void unmapRaster(MappedRaster mappedRaster);
+}
diff --git a/libjava/gnu/awt/j2d/Graphics2DImpl.java b/libjava/gnu/awt/j2d/Graphics2DImpl.java
new file mode 100644
index 00000000000..7c08295c027
--- /dev/null
+++ b/libjava/gnu/awt/j2d/Graphics2DImpl.java
@@ -0,0 +1,454 @@
+/* Copyright (C) 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.awt.j2d;
+
+import java.awt.Color;
+import java.awt.Image;
+import java.awt.Shape;
+import java.awt.Rectangle;
+import java.awt.Graphics;
+import java.awt.Graphics2D;
+import java.awt.GraphicsConfiguration;
+import java.awt.Font;
+import java.awt.FontMetrics;
+import java.awt.Paint;
+import java.awt.RenderingHints;
+import java.awt.geom.AffineTransform;
+import java.awt.image.ImageObserver;
+
+/**
+ * Delegates almost all work to a state object, that allows us to
+ * hot-swap rendering strategies based on state changes inflicted on
+ * this Graphics object. This class keeps track of properties that are
+ * not affected by the state, (such as clip shape,
+ * foreground/background color, font, etc.).
+ *
+ * <p>The far front-end of the rendering pipeline consists of the
+ * Graphics2D API. In the far back-end, lies the native graphics
+ * libraries. In most cases the native graphics libraries only have
+ * direct support for a subset of the properties of Graphics2D. To
+ * make up missing features in the native graphics libraries, the
+ * pipeline between the front-end and the back-end need to translate
+ * drawing request to primitive operations that are supported by the
+ * back-end. E.g. for X11, drawing a straight line will translate to
+ * an XDrawLine, drawing a bezier curve will trigger flattening of the
+ * curve and will result in a call to XDrawLines.
+ *
+ * <p>This is the basic strategy for the rendering pipeline: Whenever
+ * a graphics property change occurs, that causes the current pipeline
+ * to be insufficient, amend or replace parts of the pipeline so that
+ * the pipeline will once again be able to translate requests to the
+ * set of primitives supported by the native graphics library.
+ *
+ * <p>Most graphics libraries share common subsets of
+ * functionality. To be able to reuse pieces of the rendering pipeline
+ * for several backends, we define interfaces that describe subsets of
+ * characteristics supported by the backends. A wrapper for the native
+ * library can implement several interfaces to describe its range of
+ * functionality.
+ *
+ * <p>Typically, most painting is done with a graphics object with
+ * simple properties. Unless one is using a complex Look & Feel, the
+ * painting of Swing components will never require affine transforms,
+ * alpha blending, non-rectangular clipping, etc. When graphics
+ * objects are created, they start off in a state where all the
+ * properties are simple. Most graphics objects experience only
+ * trivial property changes, and never leave this simple state. It is
+ * therefore wise to ensure that the rendering pipeline for this
+ * initial state is lean and as much as possible plugs directly into
+ * the backend.
+ *
+ * <p>The initial state for graphics object of most raster displays
+ * would call for two levels of indirection:
+ *
+ * <pre>
+ * Graphics2D object ---> IntegerGraphicsState ---> DirectRasterGraphics
+ * </pre>
+ */
+public class Graphics2DImpl extends Graphics2D implements Cloneable
+{
+  GraphicsConfiguration config;
+
+  AbstractGraphicsState state;
+    
+  Color fg;
+  Color bg;
+
+  Font font;
+  
+  public Graphics2DImpl(GraphicsConfiguration config)
+  {
+    this.config = config;
+  }
+  
+  public void setState(AbstractGraphicsState state)
+  {
+    this.state = state;
+    this.state.setFrontend(this);
+  }
+    
+  public Object clone()
+  {
+    Graphics2DImpl gfxCopy = (Graphics2DImpl) super.clone();
+    AbstractGraphicsState stateCopy =
+      (AbstractGraphicsState) state.clone();
+    gfxCopy.setState(stateCopy);
+    
+    return gfxCopy;
+  }
+
+
+  // -------- Graphics methods:
+
+  public Graphics create()
+  {
+    Graphics2DImpl gfxCopy = (Graphics2DImpl) clone();
+    return gfxCopy;
+  }
+
+  public Color getColor()
+  {
+    return fg;
+  }
+  
+  public void setColor(Color color)
+  {
+    fg = color;
+    state.setColor(color);
+  }
+
+  public void setPaintMode()
+  {
+    state.setPaintMode();
+  }
+
+  public void setXORMode(Color altColor)
+  {
+    state.setXORMode(altColor);
+  }
+
+  public Font getFont()
+  {
+    return font;
+  }
+
+  public void setFont(Font font)
+  {
+    this.font = font;
+    state.setFont(font);
+  }
+    
+  public FontMetrics getFontMetrics(Font font)
+  {
+    return state.getFontMetrics(font);
+  }
+
+  public Rectangle getClipBounds()
+  {
+    return state.getClipBounds();
+  }
+    
+  public void clipRect(int x, int y, int width, int height)
+  {
+    Shape clip = state.getClip();
+    if (clip instanceof Rectangle)
+      {
+	Rectangle clipRect = (Rectangle) clip;
+	clip = clipRect.intersection(new Rectangle(x, y, width, height));
+	setClip(clip);
+	return;
+      }
+	
+    String msg =
+      "intersecting current clip shape " + clip + " with new rectangle " +
+      "has not been implemented yet";
+    throw new UnsupportedOperationException(msg);
+  }
+
+  public void setClip(int x, int y, int width, int height)
+  {
+    Rectangle clip = new Rectangle(x, y, width, height);
+    setClip(clip);
+  }
+
+  public Shape getClip()
+  {
+    return state.getClip();
+  }
+
+  public void setClip(Shape clip)
+  {
+    state.setClip(clip);
+  }
+
+  public void copyArea(int x, int y, int width, int height,
+		       int dx, int dy)
+  {
+    state.copyArea(x, y, width, height, dx, dy);
+  }
+
+  public void drawLine(int x1, int y1, int x2, int y2)
+  {
+    state.drawLine(x1, y1, x2, y2);
+  }
+    
+  public void fillRect(int x, int y, int width, int height)
+  {
+    state.fillRect(x, y, width, height);
+  }
+    
+  public void clearRect(int x, int y, int width, int height)
+  {
+    state.clearRect(x, y, width, height);
+  }
+  
+  public void drawRoundRect(int x, int y, int width, int height,
+			    int arcWidth, int arcHeight)
+  {
+    state.drawRoundRect(x, y, width, height, arcWidth, arcHeight);
+  }
+    
+  public void fillRoundRect(int x, int y, int width, int height,
+			    int arcWidth, int arcHeight)
+  {
+    state.fillRoundRect(x, y, width, height, arcWidth, arcHeight);
+  }
+
+  public void drawOval(int x, int y, int width, int height)
+  {
+    state.drawOval(x, y, width, height);
+  }
+
+  public void fillOval(int x, int y, int width, int height)
+  {
+    state.fillOval(x, y, width, height);
+  }
+
+  public void drawArc(int x, int y, int width, int height,
+		      int startAngle, int arcAngle)
+  {
+    state.drawArc(x, y, width, height, startAngle, arcAngle);
+  }
+
+  public void fillArc(int x, int y, int width, int height,
+		      int startAngle, int arcAngle)
+  {
+    state.fillArc(x, y, width, height, startAngle, arcAngle);
+  }
+
+  public void drawPolyline(int[] xPoints, int[] yPoints, int nPoints)
+  {
+    state.drawPolyline(xPoints, yPoints, nPoints);
+  }
+  
+  public void drawPolygon(int[] xPoints, int[] yPoints, int nPoints)
+  {
+    state.drawPolygon(xPoints, yPoints, nPoints);
+  }
+    
+  public void fillPolygon(int[] xPoints, int[] yPoints, int nPoints)
+  {
+    state.fillPolygon(xPoints, yPoints, nPoints);
+  }
+    
+  public boolean drawImage(Image image, int x, int y,
+			   ImageObserver observer)
+  {
+    return state.drawImage(image, x, y, observer);
+  }
+
+  public boolean drawImage(Image img, int x, int y,
+			   int width, int height,
+			   ImageObserver observer)
+  {
+    throw new UnsupportedOperationException("not implemented yet");
+  }
+
+  public boolean drawImage(Image img, int x, int y, Color bgcolor,
+			   ImageObserver observer)
+  {
+    throw new UnsupportedOperationException("not implemented yet");
+  }
+  
+  public boolean drawImage(Image img, int x, int y,
+			   int width, int height, Color bgcolor,
+			   ImageObserver observer)
+  {
+    throw new UnsupportedOperationException("not implemented yet");
+  }
+
+  public boolean drawImage(Image img,
+			   int dx1, int dy1, int dx2, int dy2,
+			   int sx1, int sy1, int sx2, int sy2,
+			   ImageObserver observer)
+  {
+    throw new UnsupportedOperationException("not implemented yet");
+  }
+  
+  public boolean drawImage(Image img,
+			   int dx1, int dy1, int dx2, int dy2,
+			   int sx1, int sy1, int sx2, int sy2,
+			   Color bgcolor, ImageObserver observer)
+  {
+    throw new UnsupportedOperationException("not implemented yet");
+  }
+  
+  public void dispose()
+  {
+    AbstractGraphicsState lState = state;
+    
+    state = null;
+    config = null;
+    font = null;
+    fg = null;
+    bg = null;
+    
+    if (lState != null)
+      lState.dispose();
+  }
+    
+
+
+  // -------- Graphics2D methods:
+    
+  public void draw(Shape shape)
+  {
+    state.draw(shape);
+  }
+  
+  public boolean drawImage(Image image, AffineTransform xform,
+			   ImageObserver obs)
+  {
+    throw new UnsupportedOperationException("not implemented yet");
+  }
+
+
+  public void drawString(String text, int x, int y)
+  {
+    state.drawString(text, x, y);
+  }
+
+  public void drawString(String text, float x, float y)
+  {
+    state.drawString(text, x, y);
+  }
+
+  public void fill(Shape shape)
+  {
+    state.fill(shape);
+  }
+
+  public boolean hit(Rectangle rect, Shape text, boolean onStroke)
+  {
+    return state.hit(rect, text, onStroke);
+  }
+    
+  public GraphicsConfiguration getDeviceConfiguration()
+  {
+    return config;
+  }
+
+  public void setPaint(Paint paint)
+  {
+    throw new UnsupportedOperationException("not implemented yet");
+  }
+
+  public void setRenderingHint(RenderingHints.Key hintKey,
+			       Object hintValue)
+  {
+    throw new UnsupportedOperationException("not implemented yet");
+  }
+  
+  public Object getRenderingHint(RenderingHints.Key hintKey)
+  {
+    throw new UnsupportedOperationException("not implemented yet");
+  }
+
+  public RenderingHints getRenderingHints()
+  {
+    throw new UnsupportedOperationException("not implemented yet");
+  }
+    
+  public void translate(int x, int y)
+  {
+    state.translate(x, y);
+  }
+  
+  public void translate(double tx, double ty)
+  {
+    state.translate(tx, ty);
+  }
+    
+  public void rotate(double theta)
+  {
+    state.rotate(theta);
+  }
+
+  public void rotate(double theta, double x, double y)
+  {
+    state.rotate(theta, x, y);
+  }
+  
+  public void scale(double scaleX, double scaleY)
+  {
+    state.scale(scaleX, scaleY);
+  }
+  
+  public void shear(double shearX, double shearY)
+  {
+    state.shear(shearX, shearY);
+  }
+
+  public void transform(AffineTransform Tx)
+  {
+    throw new UnsupportedOperationException("not implemented yet");
+  }
+
+  public void setTransform(AffineTransform Tx)
+  {
+    throw new UnsupportedOperationException("not implemented yet");
+  }
+    
+  public AffineTransform getTransform()
+  {
+    throw new UnsupportedOperationException("not implemented yet");
+  }
+
+  public Paint getPaint()
+  {
+    throw new UnsupportedOperationException("not implemented yet");
+  }
+    
+  public void setBackground(Color color)
+  {
+    bg = color;
+  }
+
+  public Color getBackground()
+  {
+    return bg;
+  }
+
+  public void clip(Shape shape)
+  {
+    Shape clip = state.getClip();
+    
+    if ((shape instanceof Rectangle) && (clip instanceof Rectangle))
+      {
+	clip = ((Rectangle) clip).intersection((Rectangle) shape);
+	state.setClip(clip);
+	return;
+      }
+	
+    String msg =
+      "intersecting current clip shape " + clip + " with new shape " + shape +
+      "has not been implemented yet";
+    throw new UnsupportedOperationException(msg);
+  }
+}
diff --git a/libjava/gnu/awt/j2d/IntegerGraphicsState.java b/libjava/gnu/awt/j2d/IntegerGraphicsState.java
new file mode 100644
index 00000000000..923720e06ae
--- /dev/null
+++ b/libjava/gnu/awt/j2d/IntegerGraphicsState.java
@@ -0,0 +1,409 @@
+/* Copyright (C) 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.awt.j2d;
+
+import java.awt.Color;
+import java.awt.Image;
+import java.awt.Shape;
+import java.awt.Rectangle;
+import java.awt.Graphics;
+import java.awt.Graphics2D;
+import java.awt.GraphicsConfiguration;
+import java.awt.Font;
+import java.awt.FontMetrics;
+import java.awt.image.BufferedImage;
+import java.awt.image.ImageObserver;
+import java.awt.image.Raster;
+import java.awt.image.WritableRaster;
+import java.awt.image.ColorModel;
+
+/**
+ * IntegerGraphicsState is one of several graphics state
+ * implementations.  This graphics state is used when the graphics
+ * object has simple properties, (coordinate translation only, no
+ * transform) and the backend supports integer coordinates (pixel
+ * based). For primitive paint operations, this object translates the
+ * coordinates and forwards the request to the backend. For requests
+ * to draw arbitrary shapes and paths, this object translates the
+ * requests to primitive drawing operations supported by the
+ * backend. IntegerGraphicsState is meant to support the most common
+ * state of an graphics object. The degree of functionality is roughly
+ * equivalent with the old java.awt.Graphics API.
+ */
+public class IntegerGraphicsState extends AbstractGraphicsState
+{
+  int tx;
+  int ty;
+  
+  DirectRasterGraphics directGfx;
+  Shape clip;
+  
+  public IntegerGraphicsState(DirectRasterGraphics directGfx)
+  {
+    this.directGfx = directGfx;
+  }
+  
+  public Object clone()
+  {
+    IntegerGraphicsState clone = (IntegerGraphicsState) super.clone();
+    clone.directGfx = (DirectRasterGraphics) directGfx.clone();
+    
+    return clone;
+  }
+
+  public void dispose()
+  {
+    DirectRasterGraphics lDeviceGfx = directGfx;
+    
+    directGfx = null;
+    
+    if (lDeviceGfx != null)
+      lDeviceGfx.dispose();
+    
+    super.dispose();
+  }
+  
+
+  // -------- Graphics methods:
+  
+  public void setColor(Color color)
+  {
+    directGfx.setColor(color);
+  }
+  
+  public void setPaintMode()
+  {
+    directGfx.setPaintMode();
+  }
+
+  public void setXORMode(Color altColor)
+  {
+    directGfx.setXORMode(altColor);
+  }
+  
+  public void setFont(Font font)
+  {
+    directGfx.setFont(font);
+  }
+  
+  public FontMetrics getFontMetrics(Font font)
+  {
+    return directGfx.getFontMetrics(font);
+  }
+
+  public void setClip(Shape clip)
+  {
+    if (clip instanceof Rectangle)
+      {
+	Rectangle clipRect = (Rectangle) clip.clone();
+	clipRect.x += tx;
+	clipRect.y += ty;
+	
+	this.clip = clipRect;
+	
+	directGfx.setClip(clipRect);
+	return;
+      }
+    
+    String msg =
+      "translating clip shape " + clip + " into device " +
+      "coordinate space has not been implemented yet";
+    
+    throw new UnsupportedOperationException(msg);
+  }
+
+  public Shape getClip()
+  {
+    if (clip instanceof Rectangle)
+      {
+	Rectangle clipRect = (Rectangle) clip;
+	clipRect.x -= tx;
+	clipRect.y -= ty;
+	return clipRect;
+      }
+
+    String msg =
+      "translating clip shape " + clip + " into user " +
+      "coordinate space has not been implemented yet";
+    
+    throw new UnsupportedOperationException(msg);
+  }
+
+  public Rectangle getClipBounds()
+  {
+    Rectangle clipRect = clip.getBounds();
+    
+    clipRect.x -= tx;
+    clipRect.y -= ty;
+    return clipRect;
+  }
+
+  public void copyArea(int x, int y, 
+		       int width, int height,
+		       int dx, int dy)
+  {
+    directGfx.copyArea(x+tx, y+ty, width, height, dx, dy);
+  }
+
+  public void drawLine(int x1, int y1,
+		       int x2, int y2)
+  {
+    directGfx.drawLine(x1+tx, y1+ty, x2+tx, y2+ty);
+  }
+    
+  public void fillRect(int x, int y,
+		       int width, int height)
+  {
+    directGfx.fillRect(x+tx, y+ty, width, height);
+  }
+    
+  public void clearRect(int x, int y,
+			int width, int height)
+  {
+    directGfx.setColor(frontend.getBackground());
+    directGfx.fillRect(x+tx, y+ty, width, height);
+    directGfx.setColor(frontend.getColor());
+  }
+
+  public void drawRoundRect(int x, int y,
+			    int width, int height,
+			    int arcWidth, int arcHeight)
+  {
+    throw new UnsupportedOperationException("not implemented yet");
+  }
+  
+  public void fillRoundRect(int x, int y,
+			    int width, int height,
+			    int arcWidth, int arcHeight)
+  {
+    throw new UnsupportedOperationException("not implemented yet");
+  }
+
+  public void drawOval(int x, int y,
+		       int width, int height)
+  {
+    throw new UnsupportedOperationException("not implemented yet");
+  }
+  
+  public void fillOval(int x, int y,
+		       int width, int height)
+  {
+    throw new UnsupportedOperationException("not implemented yet");
+  }
+
+  public void drawArc(int x, int y,
+		      int width, int height,
+		      int startAngle, int arcAngle)
+  {
+    directGfx.drawArc(x+tx, y+ty, width, height, startAngle, arcAngle);
+  }    
+
+  public void fillArc(int x, int y,
+		      int width, int height,
+		      int startAngle, int arcAngle)
+  {
+    directGfx.fillArc(x+tx, y+ty, width, height, startAngle, arcAngle);
+  }
+  
+  public void drawPolyline(int[] xPoints, int[] yPoints, int nPoints)
+  {
+    if ((tx == 0) || (ty == 0))
+      {
+	directGfx.drawPolyline(xPoints, yPoints, nPoints);
+	return;
+      }
+	    
+    throw new UnsupportedOperationException("translate not implemented");
+  }
+
+  public void drawPolygon(int[] xPoints, int[] yPoints, int nPoints)
+  {
+    if ((tx == 0) || (ty == 0))
+      {
+	directGfx.drawPolygon(xPoints, yPoints, nPoints);
+	return;
+      }
+
+    throw new UnsupportedOperationException("translate not implemented");
+  }
+  
+  public void fillPolygon(int[] xPoints, int[] yPoints, int nPoints)
+  {
+    if ((tx == 0) || (ty == 0))
+      {
+	directGfx.fillPolygon(xPoints, yPoints, nPoints);
+	return;
+      }
+    
+    throw new UnsupportedOperationException("translate not implemented");
+  }
+
+  public boolean drawImage(Image image, int x, int y,
+			   ImageObserver observer)
+  {
+    x += tx;
+    y += ty;
+    
+    if (image instanceof BufferedImage)
+      {
+	BufferedImage bImage = (BufferedImage) image;
+	Object config =
+	  bImage.getProperty("java.awt.GraphicsConfiguration");
+	
+	if (config == frontend.config)
+	  return directGfx.drawImage(image, x, y, observer);
+	
+	int width = image.getWidth(null);
+	int height = image.getHeight(null);	
+	
+	Rectangle bounds = new Rectangle(x, y, width, height);
+	
+	MappedRaster mr = directGfx.mapRaster(bounds);
+	
+	// manipulate raster here...
+	ColorModel colorModel = mr.getColorModel();
+	WritableRaster raster = mr.getRaster();
+	
+	int xEnd = x + width;
+	int yEnd = y + height;
+	
+	// FIXME: Use the following code only as a fallback. It's SLOW!
+
+	Object rgbElem = null;
+	for (int yy=0; yy<height; yy++)
+	  {
+	    for (int xx=0; xx<width; xx++)
+	      {
+		int srgb = bImage.getRGB(xx, yy);
+		int sa = ((srgb >>> 24) & 0xff) + 1;
+		int sr = ((srgb >>> 16) & 0xff) + 1;
+		int sg = ((srgb >>> 8) & 0xff) + 1;
+		int sb = (srgb & 0xff) + 1;
+		
+		rgbElem = raster.getDataElements(xx+x, yy+y, rgbElem);
+		int drgb = colorModel.getRGB(rgbElem);
+		int dr = ((drgb >>> 16) & 0xff) + 1;
+		int dg = ((drgb >>> 8) & 0xff) + 1;
+		int db = (drgb & 0xff) + 1;		    
+		int da = 256 - sa;
+		
+		dr = ((sr*sa + dr*da) >>> 8) - 1;
+		dg = ((sg*sa + dg*da) >>> 8) - 1;
+		db = ((sb*sa + db*da) >>> 8) - 1;
+		
+		drgb = (dr<<16) | (dg<<8) | db;
+		
+		rgbElem = colorModel.getDataElements(drgb, rgbElem);
+		
+		raster.setDataElements(xx+x, yy+y, rgbElem);
+	      }
+	  }
+	directGfx.unmapRaster(mr);
+	return true;
+	
+      }
+    throw new UnsupportedOperationException("drawing image " + image +
+					    "not implemented");
+  }
+  
+
+  // -------- Graphics2D methods:
+  
+  public void draw(Shape shape)
+  {
+    if (shape instanceof Rectangle)
+      {
+	Rectangle rect = (Rectangle) shape;
+	directGfx.drawRect(rect.x+tx, rect.y+ty, rect.width, rect.height);
+	return;
+      } 
+    
+    throw new UnsupportedOperationException("shape not implemented");
+  }
+
+  public void fill(Shape shape)
+  {
+    if (shape instanceof Rectangle)
+      {
+	Rectangle rect = (Rectangle) shape;
+	directGfx.fillRect(rect.x+tx, rect.y+ty, rect.width, rect.height);
+	return;
+      }
+    
+    throw new UnsupportedOperationException("not implemented");
+  }
+    
+  public boolean hit(Rectangle rect, Shape text,
+		     boolean onStroke)
+  {
+    throw new UnsupportedOperationException("not implemented");
+  }
+
+  public void drawString(String text, int x, int y)
+  {
+    directGfx.drawString(text, x+tx, y+ty);
+  }
+
+  public void drawString(String text, float x, float y)
+  {
+    drawString(text, (int) x, (int) y);
+  }
+  
+  public void translate(int x, int y)
+  {
+    tx += x;
+    ty += y;
+  }
+    
+  public void translate(double tx, double ty)
+  {
+    if ((tx == 0) && (ty == 0))
+      return;
+    
+    needAffineTransform();
+  }
+
+  public void rotate(double theta)
+  {
+    if (theta == 0)
+      return;
+    
+    needAffineTransform();
+  }
+
+  public void rotate(double theta, double x, double y)
+  {
+    if (theta == 0)
+      return;
+    
+    needAffineTransform();
+  }
+
+  public void scale(double scaleX, double scaleY)
+  {
+    if ((scaleX == 1) && (scaleY == 1))
+      return;
+
+    needAffineTransform();
+  }
+  
+  public void shear(double shearX, double shearY)
+  {
+    if ((shearX == 0) && (shearY == 0))
+      return;
+    
+    needAffineTransform();
+  }   
+  
+  private void needAffineTransform()
+  {
+    throw new UnsupportedOperationException("state with affine " +
+					    "transform not implemented");
+  }
+}
diff --git a/libjava/gnu/awt/j2d/MappedRaster.java b/libjava/gnu/awt/j2d/MappedRaster.java
new file mode 100644
index 00000000000..eb41eecf9ad
--- /dev/null
+++ b/libjava/gnu/awt/j2d/MappedRaster.java
@@ -0,0 +1,72 @@
+/* Copyright (C) 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.awt.j2d;
+
+import java.awt.image.WritableRaster;
+import java.awt.image.ColorModel;
+
+/* The raster and associated properties of a mapped screen region.
+ * The compositing capabilities of backends are often insufficient.
+ * The backend may not support alpha blending, or may not support some
+ * other special compositing rule.  This means that compositing must
+ * sometimes be done within the rendering pipeline.  The general
+ * compositing operation consists of combining new color and alpha
+ * values with existing color values on the drawing surface, to find
+ * the new color values for the drawing surface. The way the values
+ * are combined, determines what kind of compositing operation that is
+ * performed.  The default compositing operation is alpha compositing.
+ *
+ * <p>In order to perform alpha compositing and other compositing
+ * operations, we need access to the color values of the imagery that
+ * has already been drawn on the drawing surface.  The
+ * DirectRasterGraphics interface must therefore contain methods that
+ * makes it possible to gain access to the pixel values of the drawing
+ * surface.  The methods are modeled after the POSIX mmap() and
+ * munmap() functions.  But, instead of mapping and unmapping portions
+ * of data from a file descriptor to memory, the methods in
+ * DirectRasterGraphics maps and unmaps portions of the drawing
+ * surface to data arrays within writable raster objects.  A call to
+ * mapRaster() will return a writable raster object, encapsulating the
+ * image data of the drawing surface in the requested domain. The data
+ * encapsulated by this raster object can be modified using the
+ * WritableRaster API, or the data buffers can be retrieved from the
+ * raster, so that the data arrays can be manipulated directly.  When
+ * the raster image has been modified as desired, the data can be
+ * resynchronized with the drawing surface by calling mapRaster().
+ *
+ * <p>As with mmap() and munmap() the methods may work by direct
+ * manipulation of shared memory, (i.e. the raster object directly
+ * wraps the actual image data of the drawing surface), or may make a
+ * private copy that is resynched when the raster is unmapped. The
+ * backend may choose to implement either mechanism, and the pipeline
+ * code should not care what mechanism is actually used.  This design
+ * allows us to make full use of speedups such as X shared memory
+ * extentions when available.
+ */
+public class MappedRaster
+{
+  WritableRaster raster;
+  ColorModel cm;
+  
+  public MappedRaster(WritableRaster raster, ColorModel cm)
+  {
+    this.raster = raster;
+    this.cm = cm;
+  }
+
+  public final WritableRaster getRaster()
+  {
+    return raster;
+  }
+
+  public final ColorModel getColorModel()
+  {
+    return cm;
+  }
+}