[Digikam-devel] Review Request: Fix Invert filter to not invert alpha channel

[Matthias Welwarsky]

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http://git.reviewboard.kde.org/r/103962/
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Review request for Digikam.


Description
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Invert filter also inverts the alpha channel of an image. Afterwards, a fully opaque image becomes fully transparent (this is the normal usecase). The effect does not show under normal use, only when you use the filter in slave mode from inside another filter. The patch changes the behaviour to only invert red, green and blue color channels.


Diffs
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  libs/dimg/filters/fx/invertfilter.cpp a02bde0 

Diff: http://git.reviewboard.kde.org/r/103962/diff/


Testing
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No side effect on normal usecase found.


Thanks,

Matthias Welwarsky

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