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)`