Review Request: smooth scroll by mousewheel in SystemSettings

[David Edmundson]

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http://git.reviewboard.kde.org/r/106523/
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Review request for Plasma.


Description
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Smooth scroll by mousewheel in SystemSettings
    
Work around a bug in Qt, where ScrollByPixel does not work, which makes scrolling in a view with large delegates very jumpy/difficult.
(the same work around is also used in many other places in KDE, older dolphin, gwenview, knewstuff3..)


Diffs
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  systemsettings/icons/CategorizedView.h f2b064f 
  systemsettings/icons/CategorizedView.cpp 1a2a1d9 

Diff: http://git.reviewboard.kde.org/r/106523/diff/


Testing
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Thanks,

David Edmundson

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