[Digikam-devel] Thumbnails

Andi Clemens andi.clemens at gmx.net
Sun May 24 20:43:01 BST 2009


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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