/*
* $RCSfile: PatternRIF.java,v $
*
* Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
*
* Use is subject to license terms.
*
* $Revision: 1.1 $
* $Date: 2005/02/11 04:56:40 $
* $State: Exp $
*/
package com.lightcrafts.media.jai.opimage;
import java.awt.RenderingHints;
import java.awt.image.ColorModel;
import java.awt.image.Raster;
import java.awt.image.RenderedImage;
import java.awt.image.renderable.RenderedImageFactory;
import java.awt.image.renderable.ParameterBlock;
import com.lightcrafts.mediax.jai.ImageLayout;
/**
* A <code>RIF</code> supporting the "Pattern" operation in the
* rendered image layer.
*
* @see com.lightcrafts.mediax.jai.operator.PatternDescriptor
* @see PatternOpImage
*
*/
public class PatternRIF implements RenderedImageFactory {
/** Constructor. */
public PatternRIF() {}
/**
* Creates a new instance of PatternOpImage in the rendered layer.
* This method satisfies the implementation of RIF.
*/
public RenderedImage create(ParameterBlock paramBlock,
RenderingHints renderHints) {
// Get ImageLayout from renderHints if any.
ImageLayout layout = RIFUtil.getImageLayoutHint(renderHints);
int minX = 0;
int minY = 0;
if (layout != null) {
if (layout.isValid(ImageLayout.MIN_X_MASK)) {
minX = layout.getMinX(null);
}
if (layout.isValid(ImageLayout.MIN_Y_MASK)) {
minY = layout.getMinY(null);
}
}
RenderedImage source = (RenderedImage)paramBlock.getSource(0);
Raster pattern = source.getData();
ColorModel colorModel = source.getColorModel();
// Get image width and height from the parameter block
int width = paramBlock.getIntParameter(0);
int height = paramBlock.getIntParameter(1);
return new PatternOpImage(pattern, colorModel,
minX, minY, width, height);
}
}