[Digikam-devel] Thumbnails

[Gilles Caulier]

Andi,

Duing some rules in digiKam thumbs generator, only Gwenview can use
digiKam thumbs, not the inverse.

Gilles

2009/5/24 Andi Clemens <andi.clemens at gmx.net>:
> Hmm weird.
> I removed my .thumbnails folder.
>
> Then I did this:
>
> 1. open gwenview, go into some folder, generate thumbs
> 2. open digiKam, go into same folder, thumbs are regenerated
> 3. go into gwenview again, thumbs are regenerated!!!
> 4. close gwenview, open it again, thumbs are there
> 5. open digiKam, go into same folder, thumbs are regenerated
> 6. go into gwenview again, thumbs are regenerated!!!
>
> This is weird. Now both application steal each other their thumbs?
> :D
>
> This is a strange behaviour. Need to check if folder size is increasing...
>
> Andi
>
> On Sunday 24 May 2009 20:06:37 Andi Clemens wrote:
>> Ok will check this later. Right now I can see that all thumbs seem to be
>> generated again, maybe because of a different URI.
>> I will remove my .thumbnails folder this evening, display one folder in
>> gwenview and then in digiKam.
>> It should be quite fast in digiKam then...
>>
>> Andi
>>
>> On Sunday 24 May 2009 16:08:51 Gilles Caulier wrote:
>> > 2009/5/24 Gilles Caulier <caulier.gilles at gmail.com>:
>> > > 2009/5/24 Gilles Caulier <caulier.gilles at gmail.com>:
>> > >> 2009/5/24 Arnd Baecker <arnd.baecker at web.de>:
>> > >>> On Sat, 23 May 2009, Andi Clemens wrote:
>> > >>>> Hi,
>> > >>>>
>> > >>>> is it possible that our thumbnails are somehow not compatible with
>> > >>>> dolphin or gwenview?
>> > >>>
>> > >>> Maybe this entry
>> > >>>  https://bugs.kde.org/show_bug.cgi?id=152877
>> > >>> is of relevance here?
>> > >>> (Or is this one already solved in svn?)
>> > >>
>> > >> I think it's not fixed yet... and i think it's the Andi problem...
>> > >>
>> > >> I take a look to compare KDE thumb generator and digikam code...
>> > >>
>> > >> Gilles
>> > >
>> > > Arnd,
>> > >
>> > > Look code here :
>> > > http://lxr.kde.org/source/extragear/graphics/digikam/libs/threadimageio
>> > >/t humbnailcreator.cpp#247
>> > >
>> > > uri is a QString. There is no latin conversion to record Uri in text
>> > > png chunk. so no problem from digiKam code here.
>> > >
>> > > BUT, ztxt png text chunk only support latin code from PNG library.
>> > >
>> > > http://www.libpng.org/pub/png/spec/iso/index-object.html#11tEXt
>> > >
>> > > ONLY itxt png text chunk oly support UTF-8 char encoding, and the
>> > > method to create itxt png chunk is disable until libpng 1.4.0...
>> > >
>> > > http://www.libpng.org/pub/png/spec/iso/index-object.html#11iTXt
>> > >
>> > > The question is : how Qt4::Qimage do to record QString in png text
>> > > chuck ?
>> >
>> > It sound like Qt record info as byte array into zTxt chunk. And it's
>> > work.
>> >
>> > Andi, my commit #972293 must fix your problem, at least between
>> > gwenview and digiKam. Uri is the same now.
>> > For dolphin, no idea. I can't find right code from
>> > kdebase::kio-thumbnail loader.
>> >
>> > Gilles Caulier
>> > _______________________________________________
>> > Digikam-devel mailing list
>> > Digikam-devel at kde.org
>> > https://mail.kde.org/mailman/listinfo/digikam-devel
>>
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