Mailinglist Archive: opensuse-bugs (13483 mails)

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[Bug 304184] kde-window-decorator crashes quite often
  • From: bugzilla_noreply@xxxxxxxxxx
  • Date: Wed, 24 Oct 2007 10:26:53 -0600 (MDT)
  • Message-id: <20071024162653.8793E24526A@xxxxxxxxxxxxxxxxxxxxxx>

--- Comment #57 from David Reveman <dreveman@xxxxxxxxxx> 2007-10-24 10:26:52
MST ---
Lubos, thank you very much for tracking this down.

I'm to blame for the call to setWFlags. The QT docs gives the impression that
those flags are not much more than hints exposed to the WM and nothing that
would affect widget destruction. It's of course not the most appropriate thing
to do (hence the comment I put in the code) but I can't find any better way to
have QT not clip drawing to child widgets.

I guess that making the widgets toplevel and then reparenting them away might
work but it could also be causing even more issues than flipping that TopLevel

Making the parent big enough so that decoration widgets aren't clipped isn't a
solution as the parent would have to be large enough to handle all possible
top-level window coordinates. btw, kwd is pretty efficient when it comes to
texture memory usage. it's using some large pixmaps for style engines to draw
to but those are never bound to textures. The pixmaps that are bound to
textures are always minimal.

What's the support for redirected widgets in QT4? I know that there's some
support for that in there. Maybe the most appropriate way to solve this issue
is by requiring version 4 of QT which likely got an appropriate way of dealing
with redirected widgets...

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