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List:       kopete-devel
Subject:    Re: [kopete-devel] Ink draw support in WLM
From:       Olivier Goffart <ogoffart () kde ! org>
Date:       2009-05-11 22:38:40
Message-ID: 200905120038.51101.ogoffart () kde ! org
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Le Mandag 11 mai 2009, Tiago Salem Herrmann a écrit :
> Hi all,
>
> I am working on Ink draw support in WLM but I'm facing some problems, so
> I would like to ask for some opinions.
>
> The two options are to send the image in GIF or ISF
> (http://en.wikipedia.org/wiki/Ink_Serialized_Format).
> Even though ISF is now an open format, libmsn was not tested to send it
> in ISF, and probably writing a code to encode a image to ISF is a waste
> of time, since only a few people will use it and all the MSN clients
> (official and 3dy party) accept GIF.
>
> The problem is that Qt doesn't support writing GIF's, only reading. (as
> far as I understand due to legal issues).
>
> Is it possible to link WLM protocol to libgif?
> Today I'll perform some tests with libungif, but I'm not sure if the
> official client will accept uncompressed gifs.
>
> Does anyone have another/better idea?

All the patents on gif have expired by last year.
There is no problem linking to giflib.

A good thing to do would be to write a QImageIOHandler that can write gif. 

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