[Marble-devel] Review Request 111838: Change GeoDataIconStyle to use QPixmap instead of QImage internally

[Torsten Rahn]

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Is this really a good idea? While I agree on the choice for view classes (like GeoGraphicsItems). I'm concerned about usage of QPixmap in GeoData* classes: They are models and could be generated in threads. However creation of QPixmaps in threads is a bad idea since they are created e.g. on the X-Server which only knows about the GUI thread. We already get warnings when using the graphics system X11 for this reason. For this reason I suggest to use QPixmap only in the view classes while preferring QImages on the model side.  

- Torsten Rahn


On Aug. 1, 2013, 4:25 p.m., René Küttner wrote:
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> http://git.reviewboard.kde.org/r/111838/
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> (Updated Aug. 1, 2013, 4:25 p.m.)
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> Review request for Marble.
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> Description
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> GeoDataIconStyle stores its icon as a QImage at the moment. Since these styles are meant for rendering and QImage is rather slow for this purpose, I changed it to use QPixmap internally.
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> Diffs
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>   src/lib/MarbleWidgetPopupMenu.cpp ba27f36 
>   src/lib/VisiblePlacemark.cpp 42c1103 
>   src/lib/geodata/data/GeoDataFeature.h 4cd0374 
>   src/lib/geodata/data/GeoDataFeature.cpp 8a99a85 
>   src/lib/geodata/data/GeoDataIconStyle.h 5b4644f 
>   src/lib/geodata/data/GeoDataIconStyle.cpp d68d0bb 
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> Diff: http://git.reviewboard.kde.org/r/111838/diff/
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> Testing
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> I applied the patch to master and did compile marble. I also compared the visual output of the icon style before and after the patch.
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> Thanks,
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> René Küttner
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