java.awt.image
Class ReplicateScaleFilter

java.lang.Object
  |
  +--java.awt.image.ImageFilter
        |
        +--java.awt.image.ReplicateScaleFilter

Direct Known Subclasses:

AreaAveragingScaleFilter

public class ReplicateScaleFilter

extends ImageFilter

An ImageFilter class for scaling images using the simplest algorithm. This class extends the basic ImageFilter Class to scale an existing image and provide a source for a new image containing the resampled image. The pixels in the source image are sampled to produce pixels for an image of the specified size by replicating rows and columns of pixels to scale up or omitting rows and columns of pixels to scale down. It is meant to be used in conjunction with a FilteredImageSource object to produce scaled versions of existing images.

See Also:

FilteredImageSource, ImageFilter

Field Summary

protected int	destHeight
protected int	destWidth
protected Object	outpixbuf
protected int[]	srccols
protected int	srcHeight
protected int[]	srcrows
protected int	srcWidth

Fields inherited from class java.awt.image.ImageFilter

consumer

Constructor Summary

ReplicateScaleFilter(int width, int height)
Constructs a ReplicateScaleFilter that scales the pixels from its source Image as specified by the width and height parameters.

Method Summary

void	setDimensions(int w, int h) Override the dimensions of the source image and pass the dimensions of the new scaled size to the ImageConsumer.
void	setPixels(int x, int y, int w, int h, ColorModel model, byte[] pixels, int off, int scansize) Choose which rows and columns of the delivered byte pixels are needed for the destination scaled image and pass through just those rows and columns that are needed, replicated as necessary.
void	setPixels(int x, int y, int w, int h, ColorModel model, int[] pixels, int off, int scansize) Choose which rows and columns of the delivered int pixels are needed for the destination scaled image and pass through just those rows and columns that are needed, replicated as necessary.
void	setProperties(Hashtable props) Passes along the properties from the source object after adding a property indicating the scale applied.

Methods inherited from class java.awt.image.ImageFilter

clone, getFilterInstance, imageComplete, resendTopDownLeftRight, setColorModel, setHints

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

srcWidth

protected int srcWidth

srcHeight

protected int srcHeight

destWidth

protected int destWidth

destHeight

protected int destHeight

srcrows

protected int[] srcrows

srccols

protected int[] srccols

outpixbuf

protected Object outpixbuf

Constructor Detail

ReplicateScaleFilter

public ReplicateScaleFilter(int width,
                            int height)

Constructs a ReplicateScaleFilter that scales the pixels from its source Image as specified by the width and height parameters.

Parameters:

width - the target width to scale the image

height - the target height to scale the image

Method Detail

setProperties

public void setProperties(Hashtable props)

Passes along the properties from the source object after adding a property indicating the scale applied.

Overrides:

setProperties in class ImageFilter

setDimensions

public void setDimensions(int w,
                          int h)

Override the dimensions of the source image and pass the dimensions of the new scaled size to the ImageConsumer.

Overrides:

setDimensions in class ImageFilter

See Also:

ImageConsumer

setPixels

public void setPixels(int x,
                      int y,
                      int w,
                      int h,
                      ColorModel model,
                      byte[] pixels,
                      int off,
                      int scansize)

Choose which rows and columns of the delivered byte pixels are needed for the destination scaled image and pass through just those rows and columns that are needed, replicated as necessary.

Overrides:

setPixels in class ImageFilter

setPixels

public void setPixels(int x,
                      int y,
                      int w,
                      int h,
                      ColorModel model,
                      int[] pixels,
                      int off,
                      int scansize)

Choose which rows and columns of the delivered int pixels are needed for the destination scaled image and pass through just those rows and columns that are needed, replicated as necessary.

Overrides:

setPixels in class ImageFilter