Phonon::VideoWidget embedded inside a QGraphicsProxyWidget

[Aaron J. Seigo]

On March 26, 2010, Marco Martin wrote:
> the mediacenter as is now is a -completely- different problem.
> here we want to display a fullscreen video, with occasionally some chrome
> over it when we need.

yep.

> as a "temporary" solution (that will indeed last for years) putting the
> video on a window behind the  mediacenter chrome (and hiding completely
> the plasma window when not needed) is the less hacky (believe or not :p)
> more performant and simpler to implement solution

i wonder if hiding the plasma window will be the best solution (showing/hiding 
windows can be slower than desired, and then you have to time it with 
animations...)

if the plasma window is always there, but the background is painted 100% 
transparent and the QGraphicsWidgets shown are also transparent (or even 
hidden), not only will there be no hide/unhide of the window itself and no 
animation timing coordination needed but you can do all the event handling in 
the Plasma::Containment and/or the widgets on it.

the only possible problems i can think of here are:

* kwin automatically disabling compositing because there is a full screen app 
running

* it won't work without compositing ... to which i say: tough. if the media 
center requires compositing for video but delivers a really good experience, 
then so be it.

another solution might be to do the video player chrome completely outside of 
plasma and in a dedicated video player window. i think this will be really 
limiting, however, as it might be nice to be able to show things like a band 
of informational widgets over the video. being able to see if you have email 
or what the news headlines are while watching t.v.? cool. :) being able to 
glance at the playlist? useful.

> it will be possible to use it only in the mediacenter shell but that's
> fine, it's something that is needed only there
> and if some day somebody really wants to make it work on plasma-desktop or
> plasma-netbook it's quite simple just use a window like the dashboard to
> display controls, dot a desktop window.

yep.

-- 
Aaron J. Seigo
humru othro a kohnu se
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KDE core developer sponsored by Qt Development Frameworks