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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code 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
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
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package sun.java2d;
import java.awt.Composite;
import java.awt.CompositeContext;
import java.awt.AlphaComposite;
import java.awt.image.ColorModel;
import java.awt.image.BufferedImage;
import java.awt.image.Raster;
import java.awt.image.WritableRaster;
import sun.awt.image.BufImgSurfaceData;
import sun.java2d.loops.XORComposite;
import sun.java2d.loops.CompositeType;
import sun.java2d.loops.Blit;
public class SunCompositeContext implements CompositeContext {
ColorModel srcCM;
ColorModel dstCM;
Composite composite;
CompositeType comptype;
public SunCompositeContext(AlphaComposite ac,
ColorModel s, ColorModel d)
{
if (s == null) {
throw new NullPointerException("Source color model cannot be null");
}
if (d == null) {
throw new NullPointerException("Destination color model cannot be null");
}
srcCM = s;
dstCM = d;
this.composite = ac;
this.comptype = CompositeType.forAlphaComposite(ac);
}
public SunCompositeContext(XORComposite xc,
ColorModel s, ColorModel d)
{
if (s == null) {
throw new NullPointerException("Source color model cannot be null");
}
if (d == null) {
throw new NullPointerException("Destination color model cannot be null");
}
srcCM = s;
dstCM = d;
this.composite = xc;
this.comptype = CompositeType.Xor;
}
/**
* Release resources allocated for context.
*/
public void dispose() {
}
/**
* This method composes the two source tiles
* and places the result in the destination tile. Note that
* the destination can be the same object as either
* the first or second source.
* @param src1 The first source tile for the compositing operation.
* @param src2 The second source tile for the compositing operation.
* @param dst The tile where the result of the operation is stored.
*/
public void compose(Raster srcArg, Raster dstIn, WritableRaster dstOut) {
WritableRaster src;
int w;
int h;
if (dstIn != dstOut) {
dstOut.setDataElements(0, 0, dstIn);
}
// REMIND: We should be able to create a SurfaceData from just
// a non-writable Raster and a ColorModel. Since we need to
// create a SurfaceData from a BufferedImage then we need to
// make a WritableRaster since it is needed to construct a
// BufferedImage.
if (srcArg instanceof WritableRaster) {
src = (WritableRaster) srcArg;
} else {
src = srcArg.createCompatibleWritableRaster();
src.setDataElements(0, 0, srcArg);
}
w = Math.min(src.getWidth(), dstIn.getWidth());
h = Math.min(src.getHeight(), dstIn.getHeight());
BufferedImage srcImg = new BufferedImage(srcCM, src,
srcCM.isAlphaPremultiplied(),
null);
BufferedImage dstImg = new BufferedImage(dstCM, dstOut,
dstCM.isAlphaPremultiplied(),
null);
SurfaceData srcData = BufImgSurfaceData.createData(srcImg);
SurfaceData dstData = BufImgSurfaceData.createData(dstImg);
Blit blit = Blit.getFromCache(srcData.getSurfaceType(),
comptype,
dstData.getSurfaceType());
blit.Blit(srcData, dstData, composite, null, 0, 0, 0, 0, w, h);
}
}