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Chapter 22 java.awt.image Reference |
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FilteredImageSource
Name
FilteredImageSource
![[Graphic: Figure from the text]](./figs/filtere.gif)
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.
- 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.
- ic
- 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.
- ic
- 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.
- ic
- 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.
- ic
- 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.
- ic
- 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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| DirectColorModel |  |
ImageConsumer |
