BufferedImage.java [plain text]
package java.awt.image;
import gnu.java.awt.ComponentDataBlitOp;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.GraphicsEnvironment;
import java.awt.Image;
import java.awt.Point;
import java.awt.Rectangle;
import java.awt.Transparency;
import java.awt.color.ColorSpace;
import java.util.HashSet;
import java.util.Hashtable;
import java.util.Iterator;
import java.util.Vector;
public class BufferedImage extends Image
implements 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;
static final int[] bits3 = { 8, 8, 8 };
static final int[] bits4 = { 8, 8, 8 };
static final int[] bits1byte = { 8 };
static final int[] bits1ushort = { 16 };
static final int[] masks_int = { 0x00ff0000,
0x0000ff00,
0x000000ff,
DataBuffer.TYPE_INT };
static final int[] masks_565 = { 0xf800,
0x07e0,
0x001f,
DataBuffer.TYPE_USHORT};
static final int[] masks_555 = { 0x7c00,
0x03e0,
0x001f,
DataBuffer.TYPE_USHORT};
Vector observers;
public BufferedImage(int w, int h, int type)
{
ColorModel cm = null;
boolean alpha = false;
boolean premultiplied = false;
switch (type)
{
case TYPE_4BYTE_ABGR_PRE:
case TYPE_INT_ARGB_PRE:
premultiplied = true;
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 = null;
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, masks[0], masks[1], masks[2], alpha ? 0xff000000 : 0,
premultiplied,
masks[3] );
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);
}
init(cm,
cm.createCompatibleWritableRaster(w, h),
premultiplied,
null, 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, null, type);
}
public BufferedImage(ColorModel colormodel,
WritableRaster writableraster,
boolean premultiplied,
Hashtable properties)
{
init(colormodel, writableraster, premultiplied, properties,
TYPE_CUSTOM);
}
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 coerceData(boolean premultiplied)
{
colorModel = colorModel.coerceData(raster, premultiplied);
}
public WritableRaster copyData(WritableRaster dest)
{
if (dest == null)
dest = raster.createCompatibleWritableRaster(getMinX(), getMinY(),
getWidth(),getHeight());
int x = dest.getMinX();
int y = dest.getMinY();
int w = dest.getWidth();
int h = dest.getHeight();
WritableRaster src =
raster.createWritableChild(x, y, w, h, x, y,
null );
if (src.getSampleModel () instanceof ComponentSampleModel
&& dest.getSampleModel () instanceof ComponentSampleModel)
ComponentDataBlitOp.INSTANCE.filter(src, dest);
else
{
int samples[] = src.getPixels (x, y, w, h, (int [])null);
dest.setPixels (x, y, w, h, samples);
}
return dest;
}
public Graphics2D createGraphics()
{
GraphicsEnvironment env;
env = GraphicsEnvironment.getLocalGraphicsEnvironment ();
return env.createGraphics (this);
}
public void flush() {
}
public WritableRaster getAlphaRaster()
{
return colorModel.getAlphaRaster(raster);
}
public ColorModel getColorModel()
{
return colorModel;
}
public Raster getData()
{
return copyData(null);
}
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()
{
return null;
}
public int getRGB(int x, int y)
{
Object rgbElem = raster.getDataElements(x, y,
null );
return colorModel.getRGB(rgbElem);
}
public int[] getRGB(int startX, int startY, int w, int h,
int[] rgbArray,
int offset, int scanlineStride)
{
if (rgbArray == null)
{
int size = (h-1)*scanlineStride + w;
rgbArray = new int[size];
}
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 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()
{
return new ImageProducer() {
HashSet consumers = new HashSet();
public void addConsumer(ImageConsumer ic)
{
consumers.add(ic);
}
public boolean isConsumer(ImageConsumer ic)
{
return consumers.contains(ic);
}
public void removeConsumer(ImageConsumer ic)
{
consumers.remove(ic);
}
public void startProduction(ImageConsumer ic)
{
int x = 0;
int y = 0;
int width = getWidth();
int height = getHeight();
int stride = width;
int offset = 0;
int[] pixels = getRGB(x, y,
width, height,
(int[])null, offset, stride);
ColorModel model = getColorModel();
consumers.add(ic);
Iterator i = consumers.iterator();
while(i.hasNext())
{
ImageConsumer c = (ImageConsumer) i.next();
c.setHints(ImageConsumer.SINGLEPASS);
c.setDimensions(getWidth(), getHeight());
c.setPixels(x, y, width, height, model, pixels, offset, stride);
c.imageComplete(ImageConsumer.STATICIMAGEDONE);
}
}
public void requestTopDownLeftRightResend(ImageConsumer ic)
{
startProduction(ic);
}
};
}
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; }
public int getTileGridYOffset()
{
return 0; }
public int getTileHeight()
{
return getHeight(); }
public int getTileWidth()
{
return getWidth(); }
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); 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); }
public void setData(Raster src)
{
int x = src.getMinX();
int y = src.getMinY();
int w = src.getWidth();
int h = src.getHeight();
WritableRaster dest =
raster.createWritableChild(x, y, w, h, x, y,
null );
if (src.getSampleModel () instanceof ComponentSampleModel
&& dest.getSampleModel () instanceof ComponentSampleModel)
ComponentDataBlitOp.INSTANCE.filter(src, dest);
else
{
int samples[] = src.getPixels (x, y, w, h, (int [])null);
dest.setPixels (x, y, w, h, samples);
}
}
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()
{
StringBuffer buf;
buf = new StringBuffer( 120);
buf.append("BufferedImage@");
buf.append(Integer.toHexString(hashCode()));
buf.append(": type=");
buf.append(type);
buf.append(' ');
buf.append(colorModel);
buf.append(' ');
buf.append(raster);
return buf.toString();
}
public void addTileObserver (TileObserver to)
{
if (observers == null)
observers = new Vector ();
observers.add (to);
}
public void removeTileObserver (TileObserver to)
{
if (observers == null)
return;
observers.remove (to);
}
}