java.awt
Class ImageMediaEntry

java.lang.Object
  java.awt.MediaEntry
      java.awt.ImageMediaEntry

All Implemented Interfaces:

ImageObserver, Serializable

class ImageMediaEntry

extends MediaEntry

implements ImageObserver, Serializable

Field Summary

(package private) static int	ABORTED
(package private) boolean	cancelled
(package private) static int	COMPLETE
(package private) static int	DONE
(package private) static int	ERRORED
(package private) int	height
(package private) int	ID
(package private) Image	image
(package private) static int	LOADING
(package private) static int	LOADSTARTED
(package private) MediaEntry	next
private static long	serialVersionUID
(package private) int	status
(package private) MediaTracker	tracker
(package private) int	width

Fields inherited from interface java.awt.image.ImageObserver

ABORT, ALLBITS, ERROR, FRAMEBITS, HEIGHT, PROPERTIES, SOMEBITS, WIDTH

Constructor Summary

(package private)

ImageMediaEntry(MediaTracker mt, Image img, int c, int w, int h)

Method Summary

(package private) void	cancel()
(package private) int	getID()
(package private) Object	getMedia()
(package private) int	getStatus(boolean doLoad, boolean doVerify)
boolean	imageUpdate(Image img, int infoflags, 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.
(package private) static MediaEntry	insert(MediaEntry head, MediaEntry me)
(package private) boolean	matches(Image img, int w, int h)
(package private) int	parseflags(int infoflags)
(package private) void	setStatus(int flag)
(package private) void	startLoad()

Methods inherited from class java.lang.Object

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

Field Detail

image

Image image

width

int width

height

int height

serialVersionUID

private static final long serialVersionUID

See Also:

Constant Field Values

tracker

MediaTracker tracker

ID

int ID

next

MediaEntry next

status

int status

cancelled

boolean cancelled

LOADING

static final int LOADING

See Also:

Constant Field Values

ABORTED

static final int ABORTED

See Also:

Constant Field Values

ERRORED

static final int ERRORED

See Also:

Constant Field Values

COMPLETE

static final int COMPLETE

See Also:

Constant Field Values

LOADSTARTED

static final int LOADSTARTED

See Also:

Constant Field Values

DONE

static final int DONE

See Also:

Constant Field Values

Constructor Detail

ImageMediaEntry

ImageMediaEntry(MediaTracker mt,
                Image img,
                int c,
                int w,
                int h)

Method Detail

matches

boolean matches(Image img,
                int w,
                int h)

getMedia

Object getMedia()

Specified by:

getMedia in class MediaEntry

getStatus

int getStatus(boolean doLoad,
              boolean doVerify)

Overrides:

getStatus in class MediaEntry

startLoad

void startLoad()

Specified by:

startLoad in class MediaEntry

parseflags

int parseflags(int infoflags)

imageUpdate

public boolean imageUpdate(Image img,
                           int infoflags,
                           int x,
                           int y,
                           int w,
                           int h)

Description copied from interface: ImageObserver

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.

Specified by:

imageUpdate in interface ImageObserver

Parameters:

img - the image being observed.

infoflags - 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.

See Also:

ImageObserver.WIDTH, ImageObserver.HEIGHT, ImageObserver.PROPERTIES, ImageObserver.SOMEBITS, ImageObserver.FRAMEBITS, ImageObserver.ALLBITS, ImageObserver.ERROR, ImageObserver.ABORT, Image.getWidth(java.awt.image.ImageObserver), Image.getHeight(java.awt.image.ImageObserver), Graphics.drawImage(java.awt.Image, int, int, java.awt.image.ImageObserver)

insert

static MediaEntry insert(MediaEntry head,
                         MediaEntry me)

getID

int getID()

cancel

void cancel()

setStatus

void setStatus(int flag)