Visual distortion with sliding popups

[Marco Martin]

On Sunday 09 May 2010, Martin Gräßlin wrote:
> Am Sonntag 09 Mai 2010 14:27:25 schrieb Marco Martin:
> > On Sunday 09 May 2010, Martin Gräßlin wrote:
> > > Hi,
> > > 
> > > I think you all have seen the visual distortion when opening e.g.
> > > Kickoff with Sliding Popups effect (with blur effect it's very visible
> > > as you see the blurred region before the dialog is shown). Today I
> > > tried around a little bit and noticed that Lancelot is not showing
> > > this problem. So I looked a little bit around the source code and
> > > changed the following: Index: applet/applet.cpp
> > > [...]
> > > 
> > > The WA_TranslucentBackground attribute is set on Dialog, too.
> > > 
> > > If someone could confirm this observation and the comment in dialog.cpp
> > > is right I'd say we go through the complete Plasma codebase and fix
> > > this annoying issue :-)
> > 
> > i find this issue too. and the solution seems to work as well.
> > however, also with this the first time the slide doesn't happen, i think
> > because there still doesn't exist a pixmap of the window?
> 
> Yes I think so. This would probably require a change in kwin to not start
> the animation before the pixmap is present.
to further confirm this, it happens also to the (un)minimize effect sometimes 
when you have a minimized task since a long time and keeping thumbnails of 
minimized windows is disabled in the settings (in this case before 
unminimizing you also see the tooltip thumbnail empty)

Cheers,
Marco Martin