/*
* $RCSfile: RasterState.java,v $
*
* Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
*
* Use is subject to license terms.
*
* $Revision: 1.1 $
* $Date: 2005/02/11 04:56:52 $
* $State: Exp $
*/
package com.lightcrafts.media.jai.rmi;
import java.awt.Point;
import java.awt.RenderingHints;
import java.awt.image.DataBuffer;
import java.awt.image.Raster;
import java.awt.image.SampleModel;
import java.awt.image.WritableRaster;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import com.lightcrafts.mediax.jai.remote.SerializableState;
import com.lightcrafts.mediax.jai.remote.SerializerFactory;
/**
* This class is a serializable proxy for a Raster from which the
* Raster may be reconstituted.
*
* - modified from RasterProxy.
*
* @since 1.1
*/
public class RasterState extends SerializableStateImpl {
/** The supported classes */
public static Class[] getSupportedClasses() {
return new Class[] {
Raster.class,
WritableRaster.class};
}
/** Support subclasses as Raster is a factory class. */
public static boolean permitsSubclasses() {
return true;
}
/**
* Constructs a <code>RasterState</code> from a
* <code>Raster</code>.
*
* @param c The <code>Raster</code> subclass.
* @param o The <code>Raster</code> object to be serialized.
* @param h The <code>RenderingHints</code> (ignored).
*/
public RasterState(Class c, Object o, RenderingHints h) {
super(c, o, h);
}
/**
* Serialize the <code>RasterState</code>.
*
* @param out The <code>ObjectOutputStream</code>.
*/
private void writeObject(ObjectOutputStream out) throws IOException {
Raster raster = (Raster)theObject;
Raster r;
if (raster.getParent() != null) {
// Use the child ratser to create another Raster
// containing data for the requested bounds but which does
// not share the SampleModel and DataBuffer of the parent.
// Fix : 4631478
r = raster.createCompatibleWritableRaster(raster.getBounds());
((WritableRaster)r).setRect(raster);
} else {
r = raster;
}
out.writeInt(r.getWidth());
out.writeInt(r.getHeight());
out.writeObject(SerializerFactory.getState(r.getSampleModel(), null));
out.writeObject(SerializerFactory.getState(r.getDataBuffer(), null));
out.writeObject(new Point(r.getMinX(), r.getMinY()));
}
/**
* Deserialize the <code>RasterState</code>.
*
* @param out The <code>ObjectInputStream</code>.
*/
private void readObject(ObjectInputStream in)
throws IOException, ClassNotFoundException {
int width;
int height;
SerializableState sampleModelState = null;
SerializableState dataBufferState = null;
Point location = null;
width = in.readInt();
height = in.readInt();
sampleModelState = (SerializableState)in.readObject();
dataBufferState = (SerializableState)in.readObject();
location = (Point)in.readObject();
// Restore the SampleModel from its serialized form.
SampleModel sampleModel = (SampleModel)sampleModelState.getObject();
if (sampleModel == null) {
theObject = null;
return;
}
// Restore the DataBuffer from its serialized form.
DataBuffer dataBuffer = (DataBuffer)dataBufferState.getObject();
// Reconstruct the Raster.
theObject = Raster.createRaster(sampleModel, dataBuffer, location);
}
}