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java.awt.image

Class ReplicateScaleFilter

Implemented Interfaces:
Cloneable, ImageConsumer
Known Direct Subclasses:
AreaAveragingScaleFilter
public class ReplicateScaleFilter
extends ImageFilter
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.
Currently this filter does nothing and needs to be implemented.

Field Summary

protected int
destHeight
The height of the destination image.
protected int
destWidth
The width of the destination image.
protected Object
outpixbuf
protected int
srcHeight
The height of the source image.
protected int
srcWidth
The width of the source image.
protected int[]
srccols
protected int[]
srcrows

Fields inherited from class java.awt.image.ImageFilter

consumer

Fields inherited from interface java.awt.image.ImageConsumer

COMPLETESCANLINES, IMAGEABORTED, IMAGEERROR, RANDOMPIXELORDER, SINGLEFRAME, SINGLEFRAMEDONE, SINGLEPASS, STATICIMAGEDONE, TOPDOWNLEFTRIGHT

Constructor Summary

ReplicateScaleFilter(int width, int height)

Method Summary

void
setDimensions(int width, int height)
An ImageProducer indicates the size of the image being produced using this method.
void
setPixels(int x, int y, int w, int h, ColorModel model, byte[] pixels, int offset, int scansize)
This function delivers a rectangle of pixels where any pixel(m,n) is stored in the array as a byte at index (n * scansize + m + offset).
void
setPixels(int x, int y, int w, int h, ColorModel model, int[] pixels, int offset, int scansize)
This function delivers a rectangle of pixels where any pixel(m,n) is stored in the array as an int at index (n * scansize + m + offset).
void
setProperties(Hashtable props)
An ImageProducer can set a list of properties associated with this image by using this method.

Methods inherited from class java.awt.image.ImageFilter

clone, getFilterInstance, imageComplete, resendTopDownLeftRight, setColorModel, setDimensions, setHints, setPixels, setPixels, setProperties

Methods inherited from class java.lang.Object

clone, equals, extends Object> getClass, finalize, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

destHeight

protected int destHeight
The height of the destination image.

destWidth

protected int destWidth
The width of the destination image.

outpixbuf

protected Object outpixbuf

srcHeight

protected int srcHeight
The height of the source image.

srcWidth

protected int srcWidth
The width of the source image.

srccols

protected int[] srccols

srcrows

protected int[] srcrows

Constructor Details

ReplicateScaleFilter

public ReplicateScaleFilter(int width,
                            int height)

Method Details

setDimensions

public void setDimensions(int width,
                          int height)
An ImageProducer 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 setDimensions method.
Specified by:
setDimensions in interface ImageConsumer
Overrides:
setDimensions in interface ImageFilter
Parameters:
width - the width of the image
height - the height of the image

setPixels

public void setPixels(int x,
                      int y,
                      int w,
                      int h,
                      ColorModel model,
                      byte[] pixels,
                      int offset,
                      int scansize)
This function delivers a rectangle of pixels where any pixel(m,n) is stored in the array as a byte at index (n * scansize + m + offset).
Specified by:
setPixels in interface ImageConsumer
Overrides:
setPixels in interface ImageFilter
Parameters:
x - the x coordinate of the rectangle
y - the y coordinate of the rectangle
w - the width of the rectangle
h - the height of the rectangle
model - the ColorModel used to translate the pixels
pixels - the array of pixel values
offset - the index of the first pixels in the pixels array
scansize - the width to use in extracting pixels from the pixels array

setPixels

public void setPixels(int x,
                      int y,
                      int w,
                      int h,
                      ColorModel model,
                      int[] pixels,
                      int offset,
                      int scansize)
This function delivers a rectangle of pixels where any pixel(m,n) is stored in the array as an int at index (n * scansize + m + offset).
Specified by:
setPixels in interface ImageConsumer
Overrides:
setPixels in interface ImageFilter
Parameters:
x - the x coordinate of the rectangle
y - the y coordinate of the rectangle
w - the width of the rectangle
h - the height of the rectangle
model - the ColorModel used to translate the pixels
pixels - the array of pixel values
offset - the index of the first pixels in the pixels array
scansize - the width to use in extracting pixels from the pixels array

setProperties

public void setProperties(Hashtable props)
An ImageProducer can set a list of properties associated with this image by using this method.
Specified by:
setProperties in interface ImageConsumer
Overrides:
setProperties in interface ImageFilter
Parameters:
props - the list of properties associated with this image
ReplicateScaleFilter.java -- Java class for filtering images Copyright (C) 1999 Free Software Foundation, Inc. This file is part of GNU Classpath. GNU Classpath is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. GNU Classpath 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 General Public License for more details. You should have received a copy of the GNU General Public License along with GNU Classpath; see the file COPYING. If not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. Linking this library statically or dynamically with other modules is making a combined work based on this library. Thus, the terms and conditions of the GNU General Public License cover the whole combination. As a special exception, the copyright holders of this library give you permission to link this library with independent modules to produce an executable, regardless of the license terms of these independent modules, and to copy and distribute the resulting executable under terms of your choice, provided that you also meet, for each linked independent module, the terms and conditions of the license of that module. An independent module is a module which is not derived from or based on this library. If you modify this library, you may extend this exception to your version of the library, but you are not obligated to do so. If you do not wish to do so, delete this exception statement from your version.

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