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sun.awt.image

public Class OffScreenImageSource

extends Object
implements ImageProducer
Class Inheritance
All Implemented Interfaces
java.awt.image.ImageProducer
Imports
java.util.Hashtable, java.awt.image.ImageConsumer, .ImageProducer, .Raster, .WritableRaster, .ColorModel, .IndexColorModel, .DirectColorModel, .BufferedImage, .DataBuffer

Field Summary

Modifier and TypeField and Description
pack-priv int
height

pack-priv BufferedImage
image

pack-priv Hashtable<?, ?>
properties

private ImageConsumer
theConsumer

pack-priv int
width

Constructor Summary

AccessConstructor and Description
public
OffScreenImageSource(BufferedImage image, Hashtable<?, ?> properties)

public
OffScreenImageSource(BufferedImage image)

Method Summary

Modifier and TypeMethod and Description
public synchronized void
addConsumer(ImageConsumer ic)

Implements java.awt.image.ImageProducer.addConsumer.

Registers an ImageConsumer with the ImageProducer for access to the image data during a later reconstruction of the Image.

public synchronized boolean
isConsumer(ImageConsumer ic)

Implements java.awt.image.ImageProducer.isConsumer.

Determines if a specified ImageConsumer object is currently registered with this ImageProducer as one of its consumers.

private void
produce()

public synchronized void
removeConsumer(ImageConsumer ic)

Implements java.awt.image.ImageProducer.removeConsumer.

Removes the specified ImageConsumer object from the list of consumers currently registered to receive image data.

public void
requestTopDownLeftRightResend(ImageConsumer ic)

Implements java.awt.image.ImageProducer.requestTopDownLeftRightResend.

Requests, on behalf of the ImageConsumer, 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.

private void
sendPixels()

public void
startProduction(ImageConsumer ic)

Implements java.awt.image.ImageProducer.startProduction.

Registers the specified 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 might have already been registered with the producer.

Inherited from java.lang.Object:
cloneequalsfinalizegetClasshashCodenotifynotifyAlltoStringwaitwaitwait

Field Detail

heightback to summary
pack-priv int height
imageback to summary
pack-priv BufferedImage image
propertiesback to summary
pack-priv Hashtable<?, ?> properties
theConsumerback to summary
private ImageConsumer theConsumer
widthback to summary
pack-priv int width

Constructor Detail

OffScreenImageSourceback to summary
public OffScreenImageSource(BufferedImage image, Hashtable<?, ?> properties)
OffScreenImageSourceback to summary
public OffScreenImageSource(BufferedImage image)

Method Detail

addConsumerback to summary
public synchronized void addConsumer(ImageConsumer ic)

Implements java.awt.image.ImageProducer.addConsumer.

Doc from java.awt.image.ImageProducer.addConsumer.

Registers an ImageConsumer with the ImageProducer for access to the image data during a later reconstruction of the Image. The ImageProducer may, at its discretion, start delivering the image data to the consumer using the ImageConsumer interface immediately, or when the next available image reconstruction is triggered by a call to the startProduction method.

isConsumerback to summary
public synchronized boolean isConsumer(ImageConsumer ic)

Implements java.awt.image.ImageProducer.isConsumer.

Doc from java.awt.image.ImageProducer.isConsumer.

Determines if a specified ImageConsumer object is currently registered with this ImageProducer as one of its consumers.

produceback to summary
private void produce()
removeConsumerback to summary
public synchronized void removeConsumer(ImageConsumer ic)

Implements java.awt.image.ImageProducer.removeConsumer.

Doc from java.awt.image.ImageProducer.removeConsumer.

Removes the specified 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. The ImageProducer should stop sending data to this consumer as soon as is feasible.

requestTopDownLeftRightResendback to summary
public void requestTopDownLeftRightResend(ImageConsumer ic)

Implements java.awt.image.ImageProducer.requestTopDownLeftRightResend.

Doc from java.awt.image.ImageProducer.requestTopDownLeftRightResend.

Requests, on behalf of the ImageConsumer, 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. The ImageProducer is free to ignore this call if it cannot resend the data in that order. If the data can be resent, the ImageProducer should respond by executing the following minimum set of ImageConsumer method calls: 

ic.setHints(TOPDOWNLEFTRIGHT | < otherhints >);
 ic.setPixels(...);      // As many times as needed
 ic.imageComplete();
sendPixelsback to summary
private void sendPixels()
startProductionback to summary
public void startProduction(ImageConsumer ic)

Implements java.awt.image.ImageProducer.startProduction.

Doc from java.awt.image.ImageProducer.startProduction.

Registers the specified 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 might have already been registered with the producer. This method differs from the addConsumer method in that a reproduction of the image data should be triggered as soon as possible.