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Java(TM) 2 Platform, Standard Edition, v1.2.2 API Specification: Class ReplicateScaleFilter - JDK 5 Documentation v1.2.2, Java 2 SDK 英文文档

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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
Tags copied from class: ImageFilter
See Also:
ImageConsumer.setPixels(int, int, int, int, java.awt.image.ColorModel, byte[], int, int)

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
Tags copied from class: ImageFilter
See Also:
ImageConsumer.setPixels(int, int, int, int, java.awt.image.ColorModel, byte[], int, int)
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