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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* @author Igor V. Stolyarov
* @version $Revision$
*/
package org.apache.harmony.awt.gl;
import java.awt.Composite;
import java.awt.CompositeContext;
import java.awt.image.ColorModel;
import java.awt.image.Raster;
import java.awt.image.WritableRaster;
import org.apache.harmony.awt.gl.ImageSurface;
import org.apache.harmony.awt.gl.render.NativeImageBlitter;
import org.apache.harmony.awt.internal.nls.Messages;
/**
* This class represent implementation of the CompositeContext interface
*/
public class ICompositeContext implements CompositeContext {
Composite composite;
ColorModel srcCM, dstCM;
ImageSurface srcSurf, dstSurf;
public ICompositeContext(Composite comp, ColorModel src, ColorModel dst){
composite = comp;
srcCM = src;
dstCM = dst;
}
public void dispose() {
srcSurf.dispose();
dstSurf.dispose();
}
public void compose(Raster srcIn, Raster dstIn, WritableRaster dstOut) {
if(!srcCM.isCompatibleRaster(srcIn)) {
// awt.48=The srcIn raster is incompatible with src ColorModel
throw new IllegalArgumentException(Messages.getString("awt.48")); //$NON-NLS-1$
}
if(!dstCM.isCompatibleRaster(dstIn)) {
// awt.49=The dstIn raster is incompatible with dst ColorModel
throw new IllegalArgumentException(Messages.getString("awt.49")); //$NON-NLS-1$
}
if(dstIn != dstOut){
if(!dstCM.isCompatibleRaster(dstOut)) {
// awt.4A=The dstOut raster is incompatible with dst ColorModel
throw new IllegalArgumentException(Messages.getString("awt.4A")); //$NON-NLS-1$
}
dstOut.setDataElements(0, 0, dstIn);
}
WritableRaster src;
if(srcIn instanceof WritableRaster){
src = (WritableRaster) srcIn;
}else{
src = srcIn.createCompatibleWritableRaster();
src.setDataElements(0, 0, srcIn);
}
srcSurf = new ImageSurface(srcCM, src);
dstSurf = new ImageSurface(dstCM, dstOut);
int w = Math.min(srcIn.getWidth(), dstOut.getWidth());
int h = Math.min(srcIn.getHeight(), dstOut.getHeight());
NativeImageBlitter.getInstance().blit(0, 0, srcSurf, 0, 0, dstSurf,
w, h, composite, null, null);
}
}
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