2 files changed, 570 insertions, 0 deletions
diff --git a/libjava/java/awt/image/BufferedImage.java b/libjava/java/awt/image/BufferedImage.java
new file mode 100644
index 00000000000..fce3d1fd916
--- /dev/null
+++ b/libjava/java/awt/image/BufferedImage.java
@@ -0,0 +1,543 @@
+/* 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 java.awt.image;
+
+import java.awt.*;
+import java.awt.color.*;
+import java.util.*;
+
+import gnu.gcj.awt.ComponentDataBlitOp;
+
+/**
+ * A buffered image always starts at coordinates (0, 0).
+ *
+ * The buffered image is not subdivided into multiple tiles. Instead,
+ * the image consists of one large tile (0,0) with the width and
+ * height of the image. This tile is always considered to be checked
+ * out.
+ * 
+ * @author Rolf W. Rasmussen <rolfwr@ii.uib.no>
+ */
+public class BufferedImage extends java.awt.Image
+    //implements java.awt.image.WritableRenderedImage
+{
+  public static final int TYPE_CUSTOM         =  0,
+                          TYPE_INT_RGB        =  1,
+                          TYPE_INT_ARGB       =  2,
+                          TYPE_INT_ARGB_PRE   =  3,
+                          TYPE_INT_BGR        =  4,
+                          TYPE_3BYTE_BGR      =  5,
+                          TYPE_4BYTE_ABGR     =  6,
+                          TYPE_4BYTE_ABGR_PRE =  7,
+                          TYPE_USHORT_565_RGB =  8,
+                          TYPE_USHORT_555_RGB =  9,
+                          TYPE_BYTE_GRAY      = 10,
+                          TYPE_USHORT_GRAY    = 11,
+                          TYPE_BYTE_BINARY    = 12,
+                          TYPE_BYTE_INDEXED   = 13;
+  
+  final static int[] bits3 = { 8, 8, 8 };
+  final static int[] bits4 = { 8, 8, 8 };
+  final static int[] bits1byte = { 8 };
+  final static int[] bits1ushort = { 16 };
+  
+  final static int[] masks_int = { 0x00ff0000,
+				   0x0000ff00,
+				   0x000000ff,
+				   DataBuffer.TYPE_INT };
+  final static int[] masks_565 = { 0xf800,
+				   0x07e0,
+				   0x001f,
+				   DataBuffer.TYPE_USHORT};
+  final static int[] masks_555 = { 0x7c00,
+				   0x03e0,
+				   0x001f,
+				   DataBuffer.TYPE_USHORT};
+  
+  public BufferedImage(int w, int h, int type)
+  {
+    ColorModel cm;
+    
+    boolean alpha = false;
+    boolean premultiplied = false;
+    switch (type)
+      {
+      case TYPE_4BYTE_ABGR_PRE:
+      case TYPE_INT_ARGB_PRE:
+	premultiplied = true;
+	// fall through
+      case TYPE_INT_ARGB:
+      case TYPE_4BYTE_ABGR:
+	alpha = true;
+      }
+	
+    ColorSpace cs = ColorSpace.getInstance(ColorSpace.CS_sRGB);
+    switch (type)
+      {
+      case TYPE_INT_RGB:
+      case TYPE_INT_ARGB:
+      case TYPE_INT_ARGB_PRE:
+      case TYPE_USHORT_565_RGB:
+      case TYPE_USHORT_555_RGB:
+	int[] masks;
+	switch (type)
+	  {
+	  case TYPE_INT_RGB:
+	  case TYPE_INT_ARGB:
+	  case TYPE_INT_ARGB_PRE:
+	    masks = masks_int;
+	    break;
+	  case TYPE_USHORT_565_RGB:
+	    masks = masks_565;
+	    break;
+	  case TYPE_USHORT_555_RGB:
+	    masks = masks_555;
+	    break;
+	  }
+	
+	cm = new DirectColorModel(cs,
+				  32, // 32 bits in an int
+				  masks[0], // r
+				  masks[1], // g
+				  masks[2], // b
+				  alpha ? 0xff000000 : 0,
+				  premultiplied,
+				  masks[3] // data type
+				  );
+	break;
+	
+      case TYPE_INT_BGR:
+	String msg =
+	  "FIXME: Programmer is confused. Why (and how) does a " +
+	  "TYPE_INT_BGR image use ComponentColorModel to store " +
+	  "8-bit values? Is data type TYPE_INT or TYPE_BYTE. What " +
+	  "is the difference between TYPE_INT_BGR and TYPE_3BYTE_BGR?";
+	throw new UnsupportedOperationException(msg);
+	
+      case TYPE_3BYTE_BGR:
+      case TYPE_4BYTE_ABGR:
+      case TYPE_4BYTE_ABGR_PRE:
+      case TYPE_BYTE_GRAY:
+      case TYPE_USHORT_GRAY:
+	int[] bits = null;
+	int dataType = DataBuffer.TYPE_BYTE;
+	switch (type) {
+	case TYPE_3BYTE_BGR:
+	  bits = bits3;
+	  break;
+	case TYPE_4BYTE_ABGR:
+	case TYPE_4BYTE_ABGR_PRE:
+	  bits = bits4;
+	  break;
+	case TYPE_BYTE_GRAY:
+	  bits = bits1byte;
+	  break;
+	case TYPE_USHORT_GRAY:
+	  bits = bits1ushort;
+	  dataType = DataBuffer.TYPE_USHORT;
+	  break;
+	}
+	cm = new ComponentColorModel(cs, bits, alpha, premultiplied,
+				     alpha ?
+				     Transparency.TRANSLUCENT:
+				     Transparency.OPAQUE,
+				     dataType);
+	break;
+      case TYPE_BYTE_BINARY:
+	byte[] vals = { 0, (byte) 0xff };
+	cm = new IndexColorModel(8, 2, vals, vals, vals);
+	break;
+      case TYPE_BYTE_INDEXED:
+	String msg2 = "type not implemented yet";
+	throw new UnsupportedOperationException(msg2);
+	// FIXME: build color-cube and create color model
+      }
+    
+    init(cm,
+	 cm.createCompatibleWritableRaster(w, h),
+	 premultiplied,
+	 null, // no properties
+	 type
+	 );
+  }
+
+  public BufferedImage(int w, int h, int type,
+		       IndexColorModel indexcolormodel)
+  {
+    if ((type != TYPE_BYTE_BINARY) && (type != TYPE_BYTE_INDEXED))
+      throw new IllegalArgumentException("type must be binary or indexed");
+
+    init(indexcolormodel,
+	 indexcolormodel.createCompatibleWritableRaster(w, h),
+	 false, // not premultiplied (guess)
+	 null, // no properties
+	 type);
+  }
+
+  public BufferedImage(ColorModel colormodel, 
+		       WritableRaster writableraster,
+		       boolean premultiplied,
+		       Hashtable properties)
+  {
+    init(colormodel, writableraster, premultiplied, properties,
+	 TYPE_CUSTOM);
+    // TODO: perhaps try to identify type?
+  }
+ 
+  WritableRaster raster;
+  ColorModel colorModel;
+  Hashtable properties;
+  boolean isPremultiplied;
+  int type;
+  
+  private void init(ColorModel cm,
+		    WritableRaster writableraster,
+		    boolean premultiplied,
+		    Hashtable properties,
+		    int type)
+  {
+    raster = writableraster;
+    colorModel = cm;
+    this.properties = properties;
+    isPremultiplied = premultiplied;
+    this.type = type;
+  }
+    
+  //public void addTileObserver(TileObserver tileobserver) {}
+  
+  public void coerceData(boolean premultiplied)
+  {
+    colorModel = colorModel.coerceData(raster, premultiplied);
+  }
+
+  public WritableRaster copyData(WritableRaster dest)
+  {
+    if (dest == null)
+      dest = raster.createCompatibleWritableRaster();
+
+    int x = dest.getMinX();
+    int y = dest.getMinY();
+    int w = dest.getWidth();
+    int h = dest.getHeight();
+    
+    // create a src child that has the right bounds...
+    WritableRaster src =
+      raster.createWritableChild(x, y, w, h, x, y,
+				 null  // same bands
+				 );
+    
+    // Refer to ComponentDataBlitOp for optimized data blitting:
+    ComponentDataBlitOp.INSTANCE.filter(src, dest);
+    return dest;
+  }
+
+  public Graphics2D createGraphics()
+  {
+    throw new UnsupportedOperationException("not implemented");
+    // will require a lot of effort to implement
+  }
+
+  public void flush() {
+  }
+  
+  public WritableRaster getAlphaRaster()
+  {
+    return colorModel.getAlphaRaster(raster);
+  }
+  
+  public ColorModel getColorModel()
+  {
+    return colorModel;
+  }
+  
+  public Raster getData()
+  {
+    return copyData(null);
+    /* TODO: this might be optimized by returning the same
+       raster (not writable) as long as image data doesn't change. */
+  }
+
+  public Raster getData(Rectangle rectangle)
+  {
+    WritableRaster dest =
+      raster.createCompatibleWritableRaster(rectangle);
+    return copyData(dest);
+  }
+  
+  public Graphics getGraphics()
+  {
+    return createGraphics();
+  }
+
+  public int getHeight()
+  {
+    return raster.getHeight();
+  }
+  
+  public int getHeight(ImageObserver imageobserver)
+  {
+    return getHeight();
+  }
+    
+  public int getMinTileX()
+  {
+    return 0;
+  }
+  
+  public int getMinTileY()
+  {
+    return 0;
+  }
+
+  public int getMinX()
+  {
+    return 0; 
+  }
+
+  public int getMinY() 
+  {
+    return 0;
+  }
+  
+  public int getNumXTiles()
+  {
+    return 1;
+  }
+
+  public int getNumYTiles()
+  {
+	return 1;
+  }
+
+  public Object getProperty(String string)
+  {
+    if (properties == null)
+      return null;
+    return properties.get(string);
+  }
+
+  public Object getProperty(String string, ImageObserver imageobserver)
+  {
+    return getProperty(string);
+  }
+
+  
+  public String[] getPropertyNames()
+  {
+    // FIXME: implement
+    return null;
+  }
+
+  public int getRGB(int x, int y)
+  {
+    Object rgbElem = raster.getDataElements(x, y,
+					    null // create as needed
+					    );
+    return colorModel.getRGB(rgbElem);
+  }
+    
+  public int[] getRGB(int startX, int startY, int w, int h,
+		      int[] rgbArray,
+		      int offset, int scanlineStride)
+  {
+    if (rgbArray == null)
+    {
+      /*
+	000000000000000000
+	00000[#######-----   [ = start
+	-----########-----   ] = end
+	-----#######]00000
+	000000000000000000  */
+      int size = (h-1)*scanlineStride + w;
+      rgbArray = new int[size];
+    }
+	
+    int endX = startX + w;
+    int endY = startY + h;
+    
+    /* *TODO*:
+       Opportunity for optimization by examining color models...
+       
+       Perhaps wrap the rgbArray up in a WritableRaster with packed
+       sRGB color model and perform optimized rendering into the
+       array. */
+
+    Object rgbElem = null;
+    for (int y=startY; y<endY; y++)
+      {
+	int xoffset = offset;
+	for (int x=startX; x<endX; x++)
+	  {
+	    int rgb;
+	    rgbElem = raster.getDataElements(x, y, rgbElem);
+	    rgb = colorModel.getRGB(rgbElem);
+	    rgbArray[xoffset++] = rgb;
+	  }
+	offset += scanlineStride;
+      }
+    return rgbArray;
+  }
+
+  public WritableRaster getRaster()
+  {
+    return raster;
+  }
+  
+  public SampleModel getSampleModel()
+  {
+    return raster.getSampleModel();
+  }
+    
+  public ImageProducer getSource()
+  {
+    throw new UnsupportedOperationException("not implemented");
+  }
+  
+  public Vector getSources()
+  {
+    return null;
+  }
+  
+  public BufferedImage getSubimage(int x, int y, int w, int h)
+  {
+    WritableRaster subRaster = 
+      getRaster().createWritableChild(x, y, w, h, 0, 0, null);
+    
+    return new BufferedImage(getColorModel(),
+			     subRaster,
+			     isPremultiplied,
+			     properties);
+  }
+
+  public Raster getTile(int tileX, int tileY)
+  {
+    return getWritableTile(tileX, tileY);
+  }
+    
+  public int getTileGridXOffset()
+  {
+    return 0; // according to javadocs
+  }
+
+  public int getTileGridYOffset()
+  {
+    return 0; // according to javadocs
+  }
+
+  public int getTileHeight()
+  {
+    return getHeight(); // image is one big tile
+  }
+
+  public int getTileWidth()
+  {
+    return getWidth(); // image is one big tile
+  }
+
+  public int getType()
+  {
+    return type;
+  }
+
+  public int getWidth()
+  {
+    return raster.getWidth();
+  }
+
+  public int getWidth(ImageObserver imageobserver)
+  {
+    return getWidth();
+  }
+
+  public WritableRaster getWritableTile(int tileX, int tileY)
+  {
+    isTileWritable(tileX, tileY);  // for exception
+    return raster;
+  }
+
+  private static final Point[] tileIndices = { new Point() };
+    
+  public Point[] getWritableTileIndices()
+  {
+    return tileIndices;
+  }
+
+  public boolean hasTileWriters()
+  {
+    return true;
+  }
+  
+  public boolean isAlphaPremultiplied()
+  {
+    return isPremultiplied;
+  }
+
+  public boolean isTileWritable(int tileX, int tileY)
+  {
+    if ((tileX != 0) || (tileY != 0))
+      throw new ArrayIndexOutOfBoundsException("only tile is (0,0)");
+    return true;
+  }
+
+  public void releaseWritableTile(int tileX, int tileY)
+  {
+    isTileWritable(tileX, tileY);  // for exception
+  }
+
+  //public void removeTileObserver(TileObserver tileobserver) {}
+
+  public void setData(Raster src)
+  {
+    int x = src.getMinX();
+    int y = src.getMinY();
+    int w = src.getWidth();
+    int h = src.getHeight();
+    
+    // create a dest child that has the right bounds...
+    WritableRaster dest =
+      raster.createWritableChild(x, y, w, h, x, y,
+				 null  // same bands
+				 );
+    
+    // Refer to ComponentDataBlitOp for optimized data blitting:
+    ComponentDataBlitOp.INSTANCE.filter(src, dest);
+  }
+
+  public void setRGB(int x, int y, int argb)
+  {
+    Object rgbElem = colorModel.getDataElements(argb, null);
+    raster.setDataElements(x, y, rgbElem);
+  }
+  
+  public void setRGB(int startX, int startY, int w, int h,
+		     int[] argbArray, int offset, int scanlineStride)
+  {
+    int endX = startX + w;
+    int endY = startY + h;
+    
+    Object rgbElem = null;
+    for (int y=startY; y<endY; y++)
+      {
+	int xoffset = offset;
+	for (int x=startX; x<endX; x++)
+	  {
+	    int argb = argbArray[xoffset++];
+	    rgbElem = colorModel.getDataElements(argb, rgbElem);
+	    raster.setDataElements(x, y, rgbElem);
+	  }
+	offset += scanlineStride;    
+      }
+  }
+    
+  public String toString()
+  {
+    // FIXME: implement:
+    return super.toString();
+  }
+}
diff --git a/libjava/java/awt/image/RasterOp.java b/libjava/java/awt/image/RasterOp.java
new file mode 100644
index 00000000000..7fd3565492e
--- /dev/null
+++ b/libjava/java/awt/image/RasterOp.java
@@ -0,0 +1,27 @@
+/* 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 java.awt.image;
+
+import java.awt.geom.Point2D;
+import java.awt.geom.Rectangle2D;
+import java.awt.RenderingHints;
+
+public interface RasterOp {
+
+  WritableRaster filter(Raster src, WritableRaster dest);
+
+  Rectangle2D getBounds2D(Raster src);
+
+  WritableRaster createCompatibleDestRaster(Raster src);
+
+  Point2D getPoint2D(Point2D srcPoint, Point2D destPoint);
+
+  public RenderingHints getRenderingHints();
+}
+