[Kde-pim] Review Request: Don't always recompress contact photos when saving

[Sebastian Scheibner]

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http://git.reviewboard.kde.org/r/106745/
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Review request for KDEPIM-Libraries.


Description
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When changing a contact with a photo, the photo is recompressed when saving (even though the photo wasn't changed). That's because the photo is loaded into a QImage and when the contact is saved, the QImage is compressed as JPEG again (or PNG if it contains an alpha-channel, which most don't).

This patch stores the raw base64 photo data from the vcard as a QByteArray in KABC::Picture. If the photo is not changed, this QByteArray is simply used when saving the contact, so there's no recompression and quality loss. If the photo was changed it gets compressed as JPEG as before.

fixes this bug: https://bugs.kde.org/show_bug.cgi?id=307570


This addresses bug 307570.
    http://bugs.kde.org/show_bug.cgi?id=307570


Diffs
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  kabc/picture.h bf9745c 
  kabc/picture.cpp 0a51c8b 
  kabc/vcardtool.cpp a742788 

Diff: http://git.reviewboard.kde.org/r/106745/diff/


Testing
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compiled kdepimlibs/kabc with kde 4.9.2

- created a new contact in kaddressbook and added a photo. exported the contact.
- changed the photo and exported the contact again
- the image data in the exported file didn't change


Thanks,

Sebastian Scheibner

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