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/* ReplicateScaleFilter.java -- Java class for filtering images
Copyright (C) 1999 Free Software Foundation, Inc.
This file is part of the non-peer AWT libraries of GNU Classpath.
This library is free software; you can redistribute it and/or modify
it under the terms of the GNU Library General Public License as published
by the Free Software Foundation, either version 2 of the License, or
(at your option) any later verion.
This library 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 Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; if not, write to the Free Software Foundation
Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307 USA. */
package java.awt.image;
import java.util.Hashtable;
/**
* This filter should be used for fast scaling of images where the result
* does not need to ensure straight lines are still straight, etc. The
* exact method is not defined by Sun but some sort of fast Box filter should
* probably be correct.
* <br>
* Currently this filter does nothing and needs to be implemented.
*
* @author C. Brian Jones (cbj@gnu.org)
*/
public class ReplicateScaleFilter extends ImageFilter
{
public ReplicateScaleFilter(int width, int height) {
destHeight = height;
destWidth = width;
}
/**
* The height of the destination image.
*/
protected int destHeight;
/**
* The width of the destination image.
*/
protected int destWidth;
/**
* The height of the source image.
*/
protected int srcHeight;
/**
* The width of the source image.
*/
protected int srcWidth;
/**
*
*/
protected int srcrows[];
/**
*
*/
protected int srccols[];
/**
*
*/
protected Object outpixbuf;
/**
* An <code>ImageProducer</code> indicates the size of the image
* being produced using this method. A filter can override this
* method to intercept these calls from the producer in order to
* change either the width or the height before in turn calling
* the consumer's <code>setDimensions</code> method.
*
* @param width the width of the image
* @param height the height of the image
*/
public void setDimensions(int width, int height)
{
consumer.setDimensions(width, height);
}
/**
* An <code>ImageProducer</code> can set a list of properties
* associated with this image by using this method.
*
* @param props the list of properties associated with this image
*/
public void setProperties(Hashtable props)
{
props.put("filters", "ReplicateScaleFilter");
consumer.setProperties(props);
}
/**
* This function delivers a rectangle of pixels where any
* pixel(m,n) is stored in the array as a <code>byte</code> at
* index (n * scansize + m + offset).
*
* @param x the x coordinate of the rectangle
* @param y the y coordinate of the rectangle
* @param w the width of the rectangle
* @param h the height of the rectangle
* @param model the <code>ColorModel</code> used to translate the pixels
* @param pixels the array of pixel values
* @param offset the index of the first pixels in the <code>pixels</code> array
* @param scansize the width to use in extracting pixels from the <code>pixels</code> array
*/
public void setPixels(int x, int y, int w, int h,
ColorModel model, byte[] pixels, int offset, int scansize)
{
consumer.setPixels(x, y, w, h, model, pixels, offset, scansize);
}
/**
* This function delivers a rectangle of pixels where any
* pixel(m,n) is stored in the array as an <code>int</code> at
* index (n * scansize + m + offset).
*
* @param x the x coordinate of the rectangle
* @param y the y coordinate of the rectangle
* @param w the width of the rectangle
* @param h the height of the rectangle
* @param model the <code>ColorModel</code> used to translate the pixels
* @param pixels the array of pixel values
* @param offset the index of the first pixels in the <code>pixels</code> array
* @param scansize the width to use in extracting pixels from the <code>pixels</code> array
*/
public void setPixels(int x, int y, int w, int h,
ColorModel model, int[] pixels, int offset, int scansize)
{
consumer.setPixels(x, y, w, h, model, pixels, offset, scansize);
}
}
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