PeekGraphics.ImageWaiter

extends Object
implements ImageObserver

java.lang.Object
↳	sun.print.PeekGraphics.ImageWaiter

Class Overview

This private class does not return from its constructor until 'img's width and height are available.

Summary

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Inherited Constants

From interface java.awt.image.ImageObserver

Public Methods
int	getHeight()
int	getWidth()
synchronized boolean	imageUpdate(Image image, int flags, int x, int y, int w, int h) This method is called when information about an image which was previously requested using an asynchronous interface becomes available.

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Inherited Methods

From class java.lang.Object

Object	clone() Creates and returns a copy of this object.
boolean	equals(Object obj) Indicates whether some other object is "equal to" this one.
void	finalize() Called by the garbage collector on an object when garbage collection determines that there are no more references to the object.
final Class<?>	getClass() Returns the runtime class of this `Object`.
int	hashCode() Returns a hash code value for the object.
final void	notify() Wakes up a single thread that is waiting on this object's monitor.
final void	notifyAll() Wakes up all threads that are waiting on this object's monitor.
String	toString() Returns a string representation of the object.
final void	wait() Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object.
final void	wait(long timeout, int nanos) Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object, or some other thread interrupts the current thread, or a certain amount of real time has elapsed.
final void	wait(long timeout) Causes the current thread to wait until either another thread invokes the `notify()` method or the `notifyAll()` method for this object, or a specified amount of time has elapsed.

From interface java.awt.image.ImageObserver

Public Methods

public int getHeight ()

public int getWidth ()

public synchronized boolean imageUpdate (Image image, int flags, int x, int y, int w, int h)

This method is called when information about an image which was previously requested using an asynchronous interface becomes available. Asynchronous interfaces are method calls such as getWidth(ImageObserver) and drawImage(img, x, y, ImageObserver) which take an ImageObserver object as an argument. Those methods register the caller as interested either in information about the overall image itself (in the case of getWidth(ImageObserver)) or about an output version of an image (in the case of the drawImage(img, x, y, [w, h,] ImageObserver) call).

This method should return true if further updates are needed or false if the required information has been acquired. The image which was being tracked is passed in using the img argument. Various constants are combined to form the infoflags argument which indicates what information about the image is now available. The interpretation of the x, y, width, and height arguments depends on the contents of the infoflags argument.

The infoflags argument should be the bitwise inclusive OR of the following flags: WIDTH, HEIGHT, PROPERTIES, SOMEBITS, FRAMEBITS, ALLBITS, ERROR, ABORT.

Parameters

image	the image being observed.
flags	the bitwise inclusive OR of the following flags: `WIDTH`, `HEIGHT`, `PROPERTIES`, `SOMEBITS`, `FRAMEBITS`, `ALLBITS`, `ERROR`, `ABORT`.
x	the x coordinate.
y	the y coordinate.
w	the width.
h	the height.

Returns

false if the infoflags indicate that the image is completely loaded; true otherwise.

Interfaces

Classes