/*
* $RCSfile: RookIterFactory.java,v $
*
* Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
*
* Use is subject to license terms.
*
* $Revision: 1.1 $
* $Date: 2005/02/11 04:57:27 $
* $State: Exp $
*/
package javax.media.jai.iterator;
import java.awt.Rectangle;
import java.awt.image.ComponentSampleModel;
import java.awt.image.DataBuffer;
import java.awt.image.Raster;
import java.awt.image.WritableRaster;
import java.awt.image.RenderedImage;
import java.awt.image.SampleModel;
import java.awt.image.WritableRenderedImage;
// import com.sun.media.jai.iterator.RookIterCSMByte;
// import com.sun.media.jai.iterator.RookIterCSMShort;
// import com.sun.media.jai.iterator.RookIterCSMUShort;
// import com.sun.media.jai.iterator.RookIterCSMInt;
// import com.sun.media.jai.iterator.RookIterCSMFloat;
// import com.sun.media.jai.iterator.RookIterCSMDouble;
import com.sun.media.jai.iterator.RookIterFallback;
import com.sun.media.jai.iterator.WrapperRI;
import com.sun.media.jai.iterator.WrapperWRI;
// import com.sun.media.jai.iterator.WritableRookIterCSMByte;
// import com.sun.media.jai.iterator.WritableRookIterCSMShort;
// import com.sun.media.jai.iterator.WritableRookIterCSMUShort;
// import com.sun.media.jai.iterator.WritableRookIterCSMInt;
// import com.sun.media.jai.iterator.WritableRookIterCSMFloat;
// import com.sun.media.jai.iterator.WritableRookIterCSMDouble;
import com.sun.media.jai.iterator.WritableRookIterFallback;
/**
* A factory class to instantiate instances of the RookIter and
* WritableRookIter interfaces on sources of type Raster,
* RenderedImage, and WritableRenderedImage.
*
* @see RookIter
* @see WritableRookIter
*/
public class RookIterFactory {
/** Prevent this class from ever being instantiated. */
private RookIterFactory() {}
/**
* Constructs and returns an instance of RookIter suitable
* for iterating over the given bounding rectangle within the
* given RenderedImage source. If the bounds parameter is null,
* the entire image will be used.
*
* @param im a read-only RenderedImage source.
* @param bounds the bounding Rectangle for the iterator, or null.
* @return a RookIter allowing read-only access to the source.
*/
public static RookIter create(RenderedImage im,
Rectangle bounds) {
if (bounds == null) {
bounds = new Rectangle(im.getMinX(), im.getMinY(),
im.getWidth(), im.getHeight());
}
SampleModel sm = im.getSampleModel();
if (sm instanceof ComponentSampleModel) {
switch (sm.getDataType()) {
case DataBuffer.TYPE_BYTE:
// return new RookIterCSMByte(im, bounds);
case DataBuffer.TYPE_SHORT:
// return new RookIterCSMShort(im, bounds);
case DataBuffer.TYPE_USHORT:
// return new RookIterCSMUShort(im, bounds);
case DataBuffer.TYPE_INT:
// return new RookIterCSMInt(im, bounds);
case DataBuffer.TYPE_FLOAT:
// return new RookIterCSMFloat(im, bounds);
case DataBuffer.TYPE_DOUBLE:
// return new RookIterCSMDouble(im, bounds);
}
}
return new RookIterFallback(im, bounds);
}
/**
* Constructs and returns an instance of RookIter suitable
* for iterating over the given bounding rectangle within the
* given Raster source. If the bounds parameter is null,
* the entire Raster will be used.
*
* @param ras a read-only Raster source.
* @param bounds the bounding Rectangle for the iterator, or null.
* @return a RookIter allowing read-only access to the source.
*/
public static RookIter create(Raster ras,
Rectangle bounds) {
RenderedImage im = new WrapperRI(ras);
return create(im, bounds);
}
/**
* Constructs and returns an instance of WritableRookIter suitable for
* iterating over the given bounding rectangle within the given
* WritableRenderedImage source. If the bounds parameter is null,
* the entire image will be used.
*
* @param im a WritableRenderedImage source.
* @param bounds the bounding Rectangle for the iterator, or null.
* @return a WritableRookIter allowing read/write access to the source.
*/
public static WritableRookIter createWritable(WritableRenderedImage im,
Rectangle bounds) {
if (bounds == null) {
bounds = new Rectangle(im.getMinX(), im.getMinY(),
im.getWidth(), im.getHeight());
}
SampleModel sm = im.getSampleModel();
if (sm instanceof ComponentSampleModel) {
switch (sm.getDataType()) {
case DataBuffer.TYPE_BYTE:
// return new WritableRookIterCSMByte(im, bounds);
case DataBuffer.TYPE_SHORT:
// return new WritableRookIterCSMShort(im, bounds);
case DataBuffer.TYPE_USHORT:
// return new WritableRookIterCSMUShort(im, bounds);
case DataBuffer.TYPE_INT:
// return new WritableRookIterCSMInt(im, bounds);
case DataBuffer.TYPE_FLOAT:
// return new WritableRookIterCSMFloat(im, bounds);
case DataBuffer.TYPE_DOUBLE:
// return new WritableRookIterCSMDouble(im, bounds);
}
}
return new WritableRookIterFallback(im, bounds);
}
/**
* Constructs and returns an instance of WritableRookIter suitable for
* iterating over the given bounding rectangle within the given
* WritableRaster source. If the bounds parameter is null,
* the entire Raster will be used.
*
* @param ras a WritableRaster source.
* @param bounds the bounding Rectangle for the iterator, or null.
* @return a WritableRookIter allowing read/write access to the source.
*/
public static WritableRookIter createWritable(WritableRaster ras,
Rectangle bounds) {
WritableRenderedImage im = new WrapperWRI(ras);
return createWritable(im, bounds);
}
}