Review Request 126397: [xcb] Safety check whether we have a QApplication in mapViewport

[Thomas Lübking]

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Looks like this boils down to multiple qApp->desktop()->size() calls, ie. displayWidth/displayHeight in kwinglobals.h, right?

We could just "borrow" that code and kick the qApp dep then?

- Thomas Lübking


On Dec. 17, 2015, 9:21 a.m., Martin Gräßlin wrote:
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> https://git.reviewboard.kde.org/r/126397/
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> (Updated Dec. 17, 2015, 9:21 a.m.)
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> 
> Review request for KDE Frameworks, kwin and Albert Astals Cid.
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> Bugs: 354811
>     https://bugs.kde.org/show_bug.cgi?id=354811
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> Repository: kwindowsystem
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> Description
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> We observed that with Compiz as window manager various applications
> crash if they use QGuiApplication instead of QApplication. The reason
> for this is that on Compiz the mapViewport code paths are used and
> that has a widgets dependency.
> 
> This change should ensure that applications do at least not crash
> in this condition.
> 
> BUG: 354811
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> 
> Diffs
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>   src/platforms/xcb/kwindowsystem.cpp 9d287043c24894ca3c29c439c7939b139da055e8 
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> Diff: https://git.reviewboard.kde.org/r/126397/diff/
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> Testing
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> User in referenced bug report tested it, works.
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> 
> Thanks,
> 
> Martin Gräßlin
> 
>

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