🚀 go-pugleaf

In article <337DD2DD.2C335EC6@numbat.cs.rmit.edu.au>,
Shuky Rosinger  <rosinger@numbat.cs.rmit.edu.au> wrote:
>Hi everyone,
>
>I was wondering what are the drawing requests that a client sends an X
>server to draw a certain area? To make my self clear I will give an
>example:
>
>Suppose we have a netscape window running on an X display. This netscape
>window has an animated gif which constantly changes. In this case, I
>believe that the server does not redraw the whole netscape window but
>only the animated gif area. Am I right?
>
>So which drawing request does the netscape window send the Xserver? How
>can I 'listen' to them if I want to?
>
>...

I am not familiar with X at the protocol level, but I would guess that
Navigator and alike are using something like XPutImage() or XCopyArea()
calls to do the animated GIFs.  You can probably get the X source code
to see exactly how these functions use the X protocol.  If I understand
these functions correctly, XPutImage() needs to transmit pixel data from
the client to the server while XCopyArea() does not.
-- 
Bill Cheng // Guest at Columbia University Computer Science Department
william@cs.columbia.edu <URL:http://www.cs.columbia.edu/~william>