Windows previews in qml plasmoid?

[Martin Graesslin]

On Monday 02 July 2012 00:09:00 Michail Vourlakos wrote:
> In a month I will upload
> a video showing my current use case and from so far I havent noticed any
> drawbacks with
> Plasma::WindowEffects::showWindowThumbnails. I dont know what are the
> issues but I havent
> noticed any in my implementation so far...
I totally believe you that you have not noticed any issues so far. On your 
hardware you might even never notice it.

If you want to see the issues, try the following: put your applet on the 
desktop, put a few window on top of it, start a video player (and play a 
video) and run it in not fullscreen and not overlapping the thumbnails in your 
applet. Now enable the show paint effect (only if you do not suffer of epilepsy) 
and watch what gets repainted. And please note that rendering the thumbnail is 
very expensive because we do have a filter on it (if you have Intel graphics 
you won't notice that because Intel graphics prior to Sandybridge was not able 
to do this expensive filter).

Cheers
Martin