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

[Fabio D'Urso]

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http://git.reviewboard.kde.org/r/111793/
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Review request for Okular.


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.


This addresses bug 322920.
    http://bugs.kde.org/show_bug.cgi?id=322920


Diffs
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  generators/kimgio/CMakeLists.txt b0a61eb 
  generators/kimgio/generator_kimgio.cpp 1badab3 

Diff: http://git.reviewboard.kde.org/r/111793/diff/


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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