Module java.desktop

Package java.awt.image

Class BufferedImageFilter

java.lang.Object

java.awt.image.ImageFilter

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 declared in class java.awt.image.ImageFilter

consumer

Fields declared in interface java.awt.image.ImageConsumer

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

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method	Description
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 declared in class java.awt.image.ImageFilter

clone, getFilterInstance, resendTopDownLeftRight, setHints, setProperties

Methods declared in class java.lang.Object

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

Constructor Details

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 Details

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)