[5320] in java-interest
Synchronous image drawing questions
daemon@ATHENA.MIT.EDU (Brian N. Miller)
Mon Feb 5 23:56:42 1996
Date: Mon, 5 Feb 1996 11:28:31 -0500
From: bnm@bbt.com (Brian N. Miller)
To: java-interest@java.sun.com
1) Since Graphics.drawImage() works asynchronously, code immediately following
its invocation can not assume the image is drawn. I understand that various
combinations of Component's imageUpdate(), prepareImage(), and/or checkImage()
can be used to both start and signal the finish of an image's download. I'll
use these if I have to, but I'm hoping someone can point out an easier way to
synchronously draw an image.
2) Is it safe to assume that drawImage() *does* draw synchoronously if the image
has already been prepared previously, either by complete downloading or rendering
off-screen?
3) Short of examining the file, is there any way in Java to tell if a .gif is
interlaced? Would the sequence of imageUpdate() callbacks give any indication?
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