[Digikam-devel] [Bug 303163] New: "Undo" after "Color, Color Space Conversion" does not restore the original ICC profile

[Elle Stone]

https://bugs.kde.org/show_bug.cgi?id=303163

            Bug ID: 303163
          Severity: normal
           Version: 2.6.0
          Priority: NOR
          Assignee: digikam-devel at kde.org
           Summary: "Undo" after "Color, Color Space Conversion" does not
                    restore the original ICC profile
    Classification: Unclassified
                OS: Linux
          Reporter: l.elle.stone at gmail.com
          Hardware: openSUSE RPMs
            Status: UNCONFIRMED
         Component: Color Management
           Product: digikam

If you hit the "Edit, Undo, Color Profile Conversion", the color space
conversion is "undone" but the embedded profile is still the color conversion
destination profile. For instance, if you convert from sRGB to ProPhoto and
then "undo", the color space conversion itself is undone, but the embedded
profile is ProPhoto. So the colors look funny. If you save (preferably under a
new name), close showfoto, and then reopen the image, you can see that ProPhoto
is still assigned and the colors look funny. Assign sRGB and the colors are
restored. 

If you try to undo two sequential color space conversions, I'm not sure what
really happens, but the results are very wrong.

To reproduce, open an image and convert to another color space profile using
"Color, Color Space Conversion." Then select Edit, Undo and select "Color
Profile Conversion. The colors will immediately look wrong. If you save and
reopen, you'll see that the embedded profile is the profile you converted to,
and the colors will be wrong. Assign the original profile and the collors will
be correct. 

The same thing happens in digiKam and showFoto.

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