| |||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | ||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |
public class FilteredImageSource extends Object implements ImageProducer
This class is an implementation of the ImageProducer interface which takes an existing image and a filter object and uses them to produce image data for a new filtered version of the original image. Here is an example which filters an image by swapping the red and blue compents:
Image src = getImage("doc:///demo/images/duke/T1.gif"); ImageFilter colorfilter = new RedBlueSwapFilter(); Image img = createImage(new FilteredImageSource(src.getSource(), colorfilter));
Constructor Summary | |
---|---|
FilteredImageSource(ImageProducer orig, ImageFilter imgf) Constructs an ImageProducer object from an existing ImageProducer and a filter object. |
Method Summary | |
---|---|
void |
Adds the specified ImageConsumer
to the list of consumers interested in data for the filtered image.
|
boolean |
Determines whether an ImageConsumer is on the list of consumers currently interested in data for this image. |
void |
Removes an ImageConsumer from the list of consumers interested in data for this image. |
void |
Requests that a given ImageConsumer have the image data delivered one more time in top-down, left-right order. |
void |
Starts production of the filtered image. |
Methods inherited from class java.lang.Object |
---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
---|
public FilteredImageSource(ImageProducer orig, ImageFilter imgf)
orig
- the specified ImageProducer
imgf
- the specified ImageFilter
Method Detail |
---|
public synchronized void addConsumer(ImageConsumer ic)
ImageConsumer
to the list of consumers interested in data for the filtered image.
An instance of the original ImageFilter
is created
(using the filter's getFilterInstance
method)
to manipulate the image data
for the specified ImageConsumer
.
The newly created filter instance
is then passed to the addConsumer
method
of the original ImageProducer
.
This method is public as a side effect
of this class implementing
the ImageProducer
interface.
It should not be called from user code,
and its behavior if called from user code is unspecified.
ic
- the consumer for the filtered imagepublic synchronized boolean isConsumer(ImageConsumer ic)
This method is public as a side effect
of this class implementing
the ImageProducer
interface.
It should not be called from user code,
and its behavior if called from user code is unspecified.
ic
- the specified ImageConsumer
public synchronized void removeConsumer(ImageConsumer ic)
This method is public as a side effect
of this class implementing
the ImageProducer
interface.
It should not be called from user code,
and its behavior if called from user code is unspecified.
ic
public void requestTopDownLeftRightResend(ImageConsumer ic)
This method is public as a side effect
of this class implementing
the ImageProducer
interface.
It should not be called from user code,
and its behavior if called from user code is unspecified.
ic
public void startProduction(ImageConsumer ic)
ImageConsumer
isn't already a consumer of the filtered image,
an instance of the original ImageFilter
is created
(using the filter's getFilterInstance
method)
to manipulate the image data
for the ImageConsumer
.
The filter instance for the ImageConsumer
is then passed to the startProduction
method
of the original ImageProducer
.
This method is public as a side effect
of this class implementing
the ImageProducer
interface.
It should not be called from user code,
and its behavior if called from user code is unspecified.
ic
- the consumer for the filtered image
| |||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | ||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |