jdk.awt.image.ImageObserver
An asynchronous update interface for receiving notifications about Image information as the Image is constructed.
An asynchronous update interface for receiving notifications about Image information as the Image is constructed.
image-updateclj
(image-update this img infoflags x y width height)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.
img - the image being observed. - java.awt.Image
infoflags - the bitwise inclusive OR of the following flags: WIDTH, HEIGHT, PROPERTIES, SOMEBITS, FRAMEBITS, ALLBITS, ERROR, ABORT. - int
x - the x coordinate. - int
y - the y coordinate. - int
width - the width. - int
height - the height. - int
returns: false if the infoflags indicate that the
image is completely loaded; true otherwise. - boolean
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.
img - the image being observed. - `java.awt.Image`
infoflags - the bitwise inclusive OR of the following flags: WIDTH, HEIGHT, PROPERTIES, SOMEBITS, FRAMEBITS, ALLBITS, ERROR, ABORT. - `int`
x - the x coordinate. - `int`
y - the y coordinate. - `int`
width - the width. - `int`
height - the height. - `int`
returns: false if the infoflags indicate that the
image is completely loaded; true otherwise. - `boolean`cljdoc is a website building & hosting documentation for Clojure/Script libraries
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