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List:       kde-bugs-dist
Subject:    [kwin] [Bug 335367] New: kwin gets stacking order and focus wrong for simple gtk+-2.0 testcase progr
From:       Stefan Westerfeld <stefan () space ! twc ! de>
Date:       2014-05-26 12:47:47
Message-ID: bug-335367-17878 () http ! bugs ! kde ! org/
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https://bugs.kde.org/show_bug.cgi?id=335367

            Bug ID: 335367
           Summary: kwin gets stacking order and focus wrong for simple
                    gtk+-2.0 testcase program
    Classification: Unclassified
           Product: kwin
           Version: 4.11.9
          Platform: Ubuntu Packages
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: general
          Assignee: kwin-bugs-null@kde.org
          Reporter: stefan@space.twc.de

I'm working on the gst123 media player, which is written using gtk+-2.0. In
some cases the stacking order and input focus kwin assigns is not the one that
seems logical to me. To spare you the work to actually test with real media
files against the gst123 program, I isolated the problem and produced a simple
testcase, called test-show-hide[.cc].

It works like this:
  - compile it
  - start test-show-hide in a maximized konsole window
  - type a key (such as x)
    * a window will open, on top of the other windows, with focus
       (so far thats what I'd expect)
  - type a key
    * the window will close (thats expected, too)
  - type a key again
    * kwin behaves unexepected here: I'd assume thet a window opens on top of
the other windows with focus, but the window will open *behind* the maximized
konsole window, and *without input focus*

It wouldn't be much of a problem if only the testcase was affected, but the
same problem occures in gst123 when stepping from song/video to song/video in
the playlist.

I'll attach the source code of test-show-hide.

Other window managers handle this program just fine.

On kubuntu 14.04 "trusty": test-show-hide built against gtk+-2.0: 2.24.23

It fails with kwin:
    Qt: 4.8.6
    KDE: 4.13.0
    KWin: 4.11.9

It works with:
    metacity 2.34.13
    sawfish version 1.5.3

On ubuntu 12.04 "precise": test-show-hide built against gtk+-2.0: 2.24.10

 * It fails with kwin:
    Qt: 4.8.1
    KDE Development Platform: 4.8.5 (4.8.5)
    KWin: 4.8.5 (4.8.5)

  * It works with:
     metacity 2.34.1
     sawfish version 1.5.3


Reproducible: Always

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