gnu.java.awt.image

Class AsyncImage


public class AsyncImage
extends Image

Supports asynchronous loading of images.

Field Summary

Fields inherited from class java.awt.Image

SCALE_AREA_AVERAGING, SCALE_DEFAULT, SCALE_FAST, SCALE_REPLICATE, SCALE_SMOOTH, UndefinedProperty, accelerationPriority

Method Summary

void
addObserver(ImageObserver obs)
int
checkImage(int w, int h, ImageObserver obs)
void
flush()
Graphics
getGraphics()
int
getHeight(ImageObserver observer)
Object
getProperty(String name, ImageObserver observer)
Image
getRealImage()
ImageProducer
getSource()
int
getWidth(ImageObserver observer)
boolean
isComplete()
void
notifyObservers(int status, int x, int y, int w, int h)
boolean
prepareImage(int w, int h, ImageObserver obs)
void
setRealImage(Image im)
void
waitForImage(ImageObserver observer)
Waits for the image to be loaded completely, if the image observer is null.

Methods inherited from class java.awt.Image

flush, getAccelerationPriority, getGraphics, getHeight, getProperty, getScaledInstance, getSource, getWidth, setAccelerationPriority

Methods inherited from class java.lang.Object

clone, equals, extends Object> getClass, finalize, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details

addObserver

public void addObserver(ImageObserver obs)

checkImage

public int checkImage(int w,
                      int h,
                      ImageObserver obs)

flush

public void flush()
Overrides:
flush in interface Image

getGraphics

public Graphics getGraphics()
Overrides:
getGraphics in interface Image

getHeight

public int getHeight(ImageObserver observer)
Overrides:
getHeight in interface Image

getProperty

public Object getProperty(String name,
                          ImageObserver observer)
Overrides:
getProperty in interface Image

getRealImage

public Image getRealImage()

getSource

public ImageProducer getSource()
Overrides:
getSource in interface Image

getWidth

public int getWidth(ImageObserver observer)
Overrides:
getWidth in interface Image

isComplete

public boolean isComplete()

notifyObservers

public void notifyObservers(int status,
                            int x,
                            int y,
                            int w,
                            int h)

prepareImage

public boolean prepareImage(int w,
                            int h,
                            ImageObserver obs)

setRealImage

public void setRealImage(Image im)

waitForImage

public void waitForImage(ImageObserver observer)
Waits for the image to be loaded completely, if the image observer is null. Otherwise this is not necessary, because the image observer can be notified about later completion.
Parameters:
observer - the image observer

AsyncImage.java -- Loads images asynchronously Copyright (C) 2008 Free Software Foundation, Inc. This file is part of GNU Classpath. GNU Classpath is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. GNU Classpath is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with GNU Classpath; see the file COPYING. If not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. Linking this library statically or dynamically with other modules is making a combined work based on this library. Thus, the terms and conditions of the GNU General Public License cover the whole combination. As a special exception, the copyright holders of this library give you permission to link this library with independent modules to produce an executable, regardless of the license terms of these independent modules, and to copy and distribute the resulting executable under terms of your choice, provided that you also meet, for each linked independent module, the terms and conditions of the license of that module. An independent module is a module which is not derived from or based on this library. If you modify this library, you may extend this exception to your version of the library, but you are not obligated to do so. If you do not wish to do so, delete this exception statement from your version.