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java.awt.image Reference
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FilteredImageSource

Name

FilteredImageSource

[Graphic: Figure from the text]

Description

The FilteredImageSource class acts as glue to put an original ImageProducer and ImageFilter together to create a new image. As the ImageProducer for the new image, FilteredImageSource is responsible for registering image consumers for the new image.

Class Definition

public class java.awt.image.FilteredImageSource
    extends java.lang.Object 
    implements java.awt.image.ImageProducer {
  // Constructors
  public FilteredImageSource (ImageProducer original, 
      ImageFilter filter);
  // Instance Methods
  public synchronized void addConsumer (ImageConsumer ic);
  public synchronized boolean isConsumer (ImageConsumer ic);
  public synchronized void removeConsumer (ImageConsumer ic);
  public void requestTopDownLeftRightResend (ImageConsumer ic);
  public void startProduction (ImageConsumer ic);
}

Constructors

FilteredImageSource

public FilteredImageSource (ImageProducer original, ImageFilter filter)

Parameters

original

An ImageProducer that generates the image to be filtered.

filter

The ImageFilter to use to process image data delivered by original.

Description

Constructs a FilteredImageSource object to filter an image generated by an ImageProducer.

Class Methods

addConsumer

public synchronized void addConsumer (ImageConsumer ic)

Parameters

ic

ImageConsumer interested in receiving the new image.

Implements

ImageProducer.addConsumer(ImageConsumer)

Description

Registers an ImageConsumer as interested in Image information.

isConsumer

public synchronized boolean isConsumer (ImageConsumer ic)

Parameters

ic

ImageConsumer to check.

Returns

true if ImageConsumer is registered with this ImageProducer, false otherwise.

Implements

ImageProducer.isConsumer(ImageConsumer)

removeConsumer

public synchronized void removeConsumer (ImageConsumer ic)

Parameters

ic

ImageConsumer to remove.

Implements

ImageProducer.removeConsumer(ImageConsumer)

Description

Removes an ImageConsumer from the registered consumers for this ImageProducer.

requestTopDownLeftRightResend

public void requestTopDownLeftRightResend (ImageConsumer ic)

Parameters

ic

ImageConsumer to communicate with.

Implements

ImageProducer.requestTopDownLeftRightResend()

Description

Requests the retransmission of the Image data in top-down, left-to-right order.

startProduction

public void startProduction (ImageConsumer ic)

Parameters

ic

ImageConsumer to communicate with.

Implements

ImageProducer.startProduction(ImageConsumer)

Description

Registers ImageConsumer as interested in Image information and tells ImageProducer to start creating the filtered Image data immediately.

See Also

ImageFilter, ImageConsumer, ImageProducer, Object


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