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Maarten Maathuis wrote:
> Yes, i suspect it's the correct way. I hope that you now know the
> difference between xrender (composite) and composite extention, which
> was the confusion i intially tried to clear.
>
> Maarten.
xrender: Adds more advanced drawing operations than the core protocol provides.
Especially some alpha support is interesting here. The "composite" part here is
how different "images" are added together (=composited) via the drawing
operations.
composite: Allows to redirect a window's drawing operations to an offscreen
pixmap. The composite manager can then do some magic to the window's content
when it draws it to the "real" window on the screen.
xdamage: This is how the composite manager is informed when a window's content
changes.
composite manager: Uses the above extensions to implement e.g. transparent and
"wobbly" windows. BUT, as the GTK demo I somewhere found shows, it also adds
support to making only part of a window transparent via some alpha stuff that
xrender adds.
Sorry for the confusion I caused. Despite the name "composite manager", this app
also does the xrender-alpha magic. I tested this with the gtk sample app I
mentioned above and xcompmgr. Only with xcompmgr did some part of the window
become transparent (but still clickable).
So I really mean partly transparent windows via xrender and a composite manager.
Cheers,
Uli
(who hopes he got it right)
P.S.: I never used any of the extensions above and didn't read their specs, so
it's not completely impossible that I got something wrong. But I did read the
shape extension's specs.
- --
"Do you know that books smell like nutmeg or some spice from a foreign land?"
-- Faber in Fahrenheit 451
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