[Openicc] Renaming an ICC profile

[Jan-Peter Homann]

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Hello list, hello Richard,
I´m not a developer, so may be my idea is too simple...

If a user double click on an ICC profile in the GUI, the profile is
opened in a small application which allows e.g. to rename the profile
name incl the internal profile name. With "Save" the profile will be
saved with a new checksumm and the profile to device mapping is
updated automaticaly in colord.

Regards
Jan-Peter

Am 14.05.14 11:27, schrieb Richard Hughes:
> Hi all,
> 
> One frequent request from users seems to be the ability to "rename"
> an ICC profile in the GUI. What they mean is to change the
> description value of user-local profiles (rather than
> system-installed profiles). Allowing this does pose a few
> problems:
> 
> * We don't want to restrict the user to ASCII for v2 profiles * We
> don't really want to change the header checksum otherwise the 
> mapping to devices will be destroyed
> 
> I see two ways around this. For a v4 profile we can of course just
> use a MLUC value and store in the UTF16 values of what the user
> entered, but should the locale of this be the users locale (e.g.
> pt_BR) or the system locale (e.g. C) -- if it's the former then we
> probably need to store an "English" version of the profile
> description, although I'm not sure how that could be generated. I'm
> not sure if applications assume that they'll always be a non-NULL
> locale entry in the MLUC (lcms2 seems to do the right thing) or if
> such a program would just be considered buggy.
> 
> For a v2 profile, I suppose it makes sense to use the non-standard 
> cmsSigProfileDescriptionTagML and then use the MLUC value like
> above. This means applications need to read the
> cmsSigProfileDescriptionTagML and if present prefer this over the
> cmsSigProfileDescriptionTag value. This seems to be what Apple does
> in OS-X, although I think in Linux only programs using libcolord
> will do the fallback like this at the moment. A safer bet might be
> to write cmsSigProfileDescriptionTagML and then some ASCIIfied
> version of the description to cmsSigProfileDescriptionTag although
> that seems to be inviting users to report bugs about profiles
> they've renamed with accented chars that are not showing in things
> like scribus and inkscape.
> 
> For the second point, we could introduce a new metadata property, 
> something like "OriginalChecksum" which would represent the
> original file checksum and use that for matching profiles to
> devices. This would be easily abstracted away in libcolord, so end
> applications wouldn't even be aware the checksum had changed, just
> that the "title" had been modified.
> 
> I've not written any code yet, but I'm open for suggestions and 
> feedback. Thanks.
> 
> Richard _______________________________________________ openicc
> mailing list openicc at lists.freedesktop.org 
> http://lists.freedesktop.org/mailman/listinfo/openicc
> 


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