Java™ Platform
Standard Ed. 6

java.awt.image
Class BufferedImageFilter

java.lang.Object
  extended by java.awt.image.ImageFilter
      extended by java.awt.image.BufferedImageFilter
All Implemented Interfaces:
ImageConsumer, Cloneable

public class BufferedImageFilter
extends ImageFilter
implements Cloneable

The BufferedImageFilter class subclasses an ImageFilter to provide a simple means of using a single-source/single-destination image operator (BufferedImageOp) to filter a BufferedImage in the Image Producer/Consumer/Observer paradigm. Examples of these image operators are: ConvolveOp, AffineTransformOp and LookupOp.

See Also:
ImageFilter, BufferedImage, BufferedImageOp

Field Summary
 
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
BufferedImageFilter(BufferedImageOp op)
          Constructs a BufferedImageFilter with the specified single-source/single-destination operator.
 
Method Summary
 BufferedImageOp getBufferedImageOp()
          Returns the BufferedImageOp.
 void imageComplete(int status)
          Filters the information provided in the imageComplete method of the ImageConsumer interface.
 void setColorModel(ColorModel model)
          Filters the information provided in the setColorModel method of the ImageConsumer interface.
 void setDimensions(int width, int height)
          Filters the information provided in the setDimensions method of the ImageConsumer interface.
 void setPixels(int x, int y, int w, int h, ColorModel model, byte[] pixels, int off, int scansize)
          Filters the information provided in the setPixels method of the ImageConsumer interface which takes an array of bytes.
 void setPixels(int x, int y, int w, int h, ColorModel model, int[] pixels, int off, int scansize)
          Filters the information provided in the setPixels method of the ImageConsumer interface which takes an array of integers.
 
Methods inherited from class java.awt.image.ImageFilter
clone, getFilterInstance, resendTopDownLeftRight, setHints, setProperties
 
Methods inherited from class java.lang.Object
equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

BufferedImageFilter

public BufferedImageFilter(BufferedImageOp op)
Constructs a BufferedImageFilter with the specified single-source/single-destination operator.

Parameters:
op - the specified BufferedImageOp to use to filter a BufferedImage
Throws:
NullPointerException - if op is null
Method Detail

getBufferedImageOp

public BufferedImageOp getBufferedImageOp()
Returns the BufferedImageOp.

Returns:
the operator of this BufferedImageFilter.

setDimensions

public void setDimensions(int width,
                          int height)
Filters the information provided in the setDimensions method of the ImageConsumer interface.

Note: This method is intended to be called by the ImageProducer of the Image whose pixels are being filtered. Developers using this class to retrieve pixels from an image should avoid calling this method directly since that operation could result in problems with retrieving the requested pixels.

Specified by:
setDimensions in interface ImageConsumer
Overrides:
setDimensions in class ImageFilter
Parameters:
width - the width to which to set the width of this BufferedImageFilter
height - the height to which to set the height of this BufferedImageFilter
See Also:
ImageConsumer.setDimensions(int, int)

setColorModel

public void setColorModel(ColorModel model)
Filters the information provided in the setColorModel method of the ImageConsumer interface.

If model is null, this method clears the current ColorModel of this BufferedImageFilter.

Note: This method is intended to be called by the ImageProducer of the Image whose pixels are being filtered. Developers using this class to retrieve pixels from an image should avoid calling this method directly since that operation could result in problems with retrieving the requested pixels.

Specified by:
setColorModel in interface ImageConsumer
Overrides:
setColorModel in class ImageFilter
Parameters:
model - the ColorModel to which to set the ColorModel of this BufferedImageFilter
See Also:
ImageConsumer.setColorModel(java.awt.image.ColorModel)

setPixels

public void setPixels(int x,
                      int y,
                      int w,
                      int h,
                      ColorModel model,
                      byte[] pixels,
                      int off,
                      int scansize)
Filters the information provided in the setPixels method of the ImageConsumer interface which takes an array of bytes.

Note: This method is intended to be called by the ImageProducer of the Image whose pixels are being filtered. Developers using this class to retrieve pixels from an image should avoid calling this method directly since that operation could result in problems with retrieving the requested pixels.

Specified by:
setPixels in interface ImageConsumer
Overrides:
setPixels in class ImageFilter
Parameters:
x - the X coordinate of the upper-left corner of the area of pixels to be set
y - the Y coordinate of the upper-left corner of the area of pixels to be set
w - the width of the area of pixels
h - the height of the area of pixels
model - the specified ColorModel
pixels - the array of pixels
off - the offset into the pixels array
scansize - the distance from one row of pixels to the next in the pixels array
Throws:
IllegalArgumentException - if width or height are less than zero.
See Also:
ImageConsumer.setPixels(int, int, int, int, ColorModel, byte[], int, int)

setPixels

public void setPixels(int x,
                      int y,
                      int w,
                      int h,
                      ColorModel model,
                      int[] pixels,
                      int off,
                      int scansize)
Filters the information provided in the setPixels method of the ImageConsumer interface which takes an array of integers.

Note: This method is intended to be called by the ImageProducer of the Image whose pixels are being filtered. Developers using this class to retrieve pixels from an image should avoid calling this method directly since that operation could result in problems with retrieving the requested pixels.

Specified by:
setPixels in interface ImageConsumer
Overrides:
setPixels in class ImageFilter
Parameters:
x - the X coordinate of the upper-left corner of the area of pixels to be set
y - the Y coordinate of the upper-left corner of the area of pixels to be set
w - the width of the area of pixels
h - the height of the area of pixels
model - the specified ColorModel
pixels - the array of pixels
off - the offset into the pixels array
scansize - the distance from one row of pixels to the next in the pixels array
Throws:
IllegalArgumentException - if width or height are less than zero.
See Also:
ImageConsumer.setPixels(int, int, int, int, ColorModel, int[], int, int)

imageComplete

public void imageComplete(int status)
Filters the information provided in the imageComplete method of the ImageConsumer interface.

Note: This method is intended to be called by the ImageProducer of the Image whose pixels are being filtered. Developers using this class to retrieve pixels from an image should avoid calling this method directly since that operation could result in problems with retrieving the requested pixels.

Specified by:
imageComplete in interface ImageConsumer
Overrides:
imageComplete in class ImageFilter
Parameters:
status - the status of image loading
Throws:
ImagingOpException - if there was a problem calling the filter method of the BufferedImageOp associated with this instance.
See Also:
ImageConsumer.imageComplete(int)

Java™ Platform
Standard Ed. 6

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