FilteredImageSource

Name

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