magick

Class MagickProducer

java.lang.Object

magick.Magick

magick.MagickProducer

All Implemented Interfaces:

ImageProducer

public class MagickProducer
extends Magick
implements ImageProducer

This class implements the ImageProducer class. It reads the pixels off a MagickImage and sends the pixels to the specified ImageConsumer.

Author:

Eric Yeo

Constructor Summary

Constructors

Constructor and Description
MagickProducer(MagickImage image) Constructor.

Method Summary

Modifier and Type	Method and Description
void	addConsumer(ImageConsumer consumer) This method is used to register an ImageConsumer with the ImageProducer for access to the image data during a later reconstruction of the Image.
boolean	isConsumer(ImageConsumer consumer) This method determines if a given ImageConsumer object is currently registered with this ImageProducer as one of its consumers.
void	removeConsumer(ImageConsumer consumer) This method removes the given ImageConsumer object from the list of consumers currently registered to receive image data.
void	requestTopDownLeftRightResend(ImageConsumer consumer) This method is used by an ImageConsumer to request that the ImageProducer attempt to resend the image data one more time in TOPDOWNLEFTRIGHT order so that higher quality conversion algorithms which depend on receiving pixels in order can be used to produce a better output version of the image.
void	startProduction(ImageConsumer consumer) This method both registers the given ImageConsumer object as a consumer and starts an immediate reconstruction of the image data which will then be delivered to this consumer and any other consumer which may have already been registered with the producer.

Methods inherited from class magick.Magick

parseImageGeometry

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

MagickProducer

public MagickProducer(MagickImage image)

Constructor.

Parameters:

image - the MagickImage to produce an Image from

Method Detail

addConsumer

public void addConsumer(ImageConsumer consumer)

This method is used to register an ImageConsumer with the ImageProducer for access to the image data during a later reconstruction of the Image.

Specified by:

addConsumer in interface ImageProducer

Parameters:

consumer - to register with the producer

isConsumer

public boolean isConsumer(ImageConsumer consumer)

This method determines if a given ImageConsumer object is currently registered with this ImageProducer as one of its consumers.

Specified by:

isConsumer in interface ImageProducer

Parameters:

consumer - to consumer to register with the producer

removeConsumer

public void removeConsumer(ImageConsumer consumer)

This method removes the given ImageConsumer object from the list of consumers currently registered to receive image data. It is not considered an error to remove a consumer that is not currently registered.

Specified by:

removeConsumer in interface ImageProducer

Parameters:

consumer - the consumer to check for registration

startProduction

public void startProduction(ImageConsumer consumer)

This method both registers the given ImageConsumer object as a consumer and starts an immediate reconstruction of the image data which will then be delivered to this consumer and any other consumer which may have already been registered with the producer.

Specified by:

startProduction in interface ImageProducer

Parameters:

consumer - to be registered before producing the image

requestTopDownLeftRightResend

public void requestTopDownLeftRightResend(ImageConsumer consumer)

This method is used by an ImageConsumer to request that the ImageProducer attempt to resend the image data one more time in TOPDOWNLEFTRIGHT order so that higher quality conversion algorithms which depend on receiving pixels in order can be used to produce a better output version of the image.

Specified by:

requestTopDownLeftRightResend in interface ImageProducer

Parameters:

consumer - the consumer to register before producing the image