Review Request 127713: Specify the generic "unknown" icon as fallback to QIcon::fromTheme()

[Wolfgang Bauer]

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https://git.reviewboard.kde.org/r/127713/
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Review request for Dolphin.


Bugs: 358958 and 361034
    https://bugs.kde.org/show_bug.cgi?id=358958
    https://bugs.kde.org/show_bug.cgi?id=361034


Repository: dolphin


Description
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The default fallback of QIcon::fromTheme() is QIcon(), i.e. a null icon. Set the generic "unknown" icon as fallback to prevent missing icons for filetypes that specify an icon name that doesn't exist.

This also gets rid of "QPixmap::scaled: Pixmap is a null pixmap" warnings in that case.


Diffs
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  src/kitemviews/kstandarditemlistwidget.cpp 66131d5 

Diff: https://git.reviewboard.kde.org/r/127713/diff/


Testing
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Open a folder that contains files whose filetype specifies an nonexistent icon name (/dev/ contains a lot of those here).
They show up using the generic "unknown" icon now, see attached screenshots.


File Attachments
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without the patch
  https://git.reviewboard.kde.org/media/uploaded/files/2016/04/22/aec678ba-5769-4fc8-8632-6f5fba301652__before.png
same folder with the patch
  https://git.reviewboard.kde.org/media/uploaded/files/2016/04/22/d2201425-a987-4611-812a-ae50ed24b32e__after.png


Thanks,

Wolfgang Bauer

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