[Okular-devel] Review Request 111793: kimgio generator: Apply transformations dictated by Exif metadata

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This review has been submitted with commit 26c257202d5741f040cdc14626c3fbf24943e93d by Fabio D'Urso to branch master.

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On Oct. 8, 2013, 4:23 p.m., Fabio D'Urso wrote:
> 
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> http://git.reviewboard.kde.org/r/111793/
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> (Updated Oct. 8, 2013, 4:23 p.m.)
> 
> 
> Review request for Okular.
> 
> 
> Bugs: 322920
>     http://bugs.kde.org/show_bug.cgi?id=322920
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> Repository: okular
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> Description
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> This patch fixes bug 322920 (JPG images don't open rotated correctly).
> It adds a dependency on libKExiv2, which is a wrapper around Exiv2.
> 
> I've put the code that applies the transformation in loadDocument(), which means that it will block the UI.
> Of course, with a little more effort, it can be moved to image(), but I've decided to keep it in loadDocument() because:
>  - it's a one-time only operation;
>  - loadDocument() already blocks while loading the file, so I guess a little more time won't hurt much.
> Of course, if you don't agree, I can change it.
> 
> The dependency on libKExiv2 *not* optional because I want to avoid having orientation depend on compilation flags. If I made it optional and you shared a .okular archive with annotations, their (normalized) coordinates would no longer be consistent among clients.
> 
> 
> Diffs
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> 
>   generators/CMakeLists.txt 531cc6e 
>   generators/kimgio/CMakeLists.txt b0a61eb 
>   generators/kimgio/generator_kimgio.cpp 1badab3 
>   generators/kimgio/tests/data/testExifOrientation-0.jpg PRE-CREATION 
>   generators/kimgio/tests/data/testExifOrientation-0mirror.jpg PRE-CREATION 
>   generators/kimgio/tests/data/testExifOrientation-180.jpg PRE-CREATION 
>   generators/kimgio/tests/data/testExifOrientation-180mirror.jpg PRE-CREATION 
>   generators/kimgio/tests/data/testExifOrientation-270.jpg PRE-CREATION 
>   generators/kimgio/tests/data/testExifOrientation-270mirror.jpg PRE-CREATION 
>   generators/kimgio/tests/data/testExifOrientation-90.jpg PRE-CREATION 
>   generators/kimgio/tests/data/testExifOrientation-90mirror.jpg PRE-CREATION 
>   generators/kimgio/tests/data/testExifOrientation-noexif.jpg PRE-CREATION 
>   generators/kimgio/tests/data/testExifOrientation-unspecified.jpg PRE-CREATION 
>   generators/kimgio/tests/kimgiotest.cpp PRE-CREATION 
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> Diff: http://git.reviewboard.kde.org/r/111793/diff/
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> 
> Testing
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> - Image from bug 322920
> - Images taken with my phone (Galaxy S2)
> - Images without Exif metadata at all, to verify that they still work
> 
> 
> Thanks,
> 
> Fabio D'Urso
> 
>

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