Re: [g-a-devel] gnome-mag question: what is done in magnifier_check_set_struts

[Bill Haneman <Bill Haneman Sun COM>]

Carlos Eduardo Rodrigues Diogenes wrote:

> Hi Bill,
>
> Can you explain me what is done in the function 
> magnifier_check_set_struts, especially the part that involves Atoms 
> (that is the central part of this function). I search about it, but 
> didn't find nothing that can clarify what is being done there.

The magnifier is setting the X "strut" and "partial strut" properties, 
by which it is attempting to reserve space on the screen.  This happens 
only in 'split screen' magnification modes, where the magnified area 
must share the screen with other apps.

By setting these properties, the magnifier can be used with 
applications' "maximize" window manager button, so that the application 
window takes up all of the "available" screen area without overlapping 
the magnifier.

If we are using COMPOSITE, then this is not needed, since with COMPOSITE 
the magnifier can "see under" the magnified area and therefore it 
doesn't have to have a dedicated part of the screen for ite exclusive use.

regards

Bill

> One more question about this part of code: why the TODO in the 
> beginning of the function, why we don't do this if we are using 
> composite?
>
> Thanks,
> Carlos.
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