[digiKam-users] Digikam .xcf saga

[leoutation at gmx.fr]

On 8/23/19 4:29 AM, Gilles Caulier wrote:
> The solution with tumbler is somewhere in one plugin :
>
> https://github.com/xfce-mirror/tumbler/tree/master/plugins
>
> ..
> cover-thumbnailer => ebook
> desktop-thumbnailer => desktop files
> ffmpeg-thumbnailer => ffmpeg
> font-thumbnailer => Fonts
> gst-thumbnailer => GStreamer
> jpeg-thumbnailer => JPEG
> odf-thumbnailer  => libreoffice
> pixbuf-thumbnailer => Pixmap ???
> poppler-thumbnailer => PDF, PS
> raw-thumbnailer => RAW
>
> We already has ffmpeg in digiKam and it do not work
>
> Rest : gstreamer and pixbuf
> When you run tumbler on the console, there is some debug statments about
> XCF processing ?
No Tumbler executable.
When launching Thunar in console, it displays xcf thumbnails but nothing
about XCF.
I think Tumbler uses gdk-pixbuf2 to display .xcf thumbnails, maybe...

https://git.archlinux.org/svntogit/packages.git/tree/trunk/PKGBUILD?h=packages/tumbler
https://wiki.gnome.org/Projects/GdkPixbuf
https://developer.gnome.org/gdk-pixbuf/unstable//
https://www.archlinux.org/packages/extra/x86_64/gdk-pixbuf2/
https://git.archlinux.org/svntogit/packages.git/tree/trunk/PKGBUILD?h=packages/gdk-pixbuf2

Executable 'gdk-pixbuf-thumbnailer' in console:
  % gdk-pixbuf-thumbnailer -h
Usage:
   gdk-pixbuf-thumbnailer [OPTION?] [INPUT FILE] [OUTPUT FILE] Thumbnail
images
Help Options:
   -h, --help                        Show help options
Application Options:
   -s, --size                        Size of the thumbnail in pixels
   --g-fatal-warnings                Make all warnings fatal


'gdk-pixbuf-thumbnailer testmader-png-1.png testpng.jpeg'
generates 256x192 pixels image 'testpng.jpeg'
But it fails with .xcf
'gdk-pixbuf-thumbnailer testmader-xcf-1.xcf test.jpeg'

** (gdk-pixbuf-thumbnailer:2132): WARNING **: 11:51:28.037: Could not
thumbnail 'testmader-xcf-1.xcf': Couldn?t recognize the image file
format for file ?/home/fre/Bureau/gimp/test-gimp2.10/testmader-xcf-1.xcf?



>
> Gilles Caulier
>
> Le jeu. 22 août 2019 à 21:27, <leoutation at gmx.fr
> <mailto:leoutation at gmx.fr>> a écrit :
>
>     On 8/22/19 8:47 PM, Hans-Peter wrote:
>      > On Thu, 22 Aug 2019 10:51:24 +0200
>      > leoutation at gmx.fr <mailto:leoutation at gmx.fr> wrote:
>      >
>      >> On 8/22/19 10:16 AM, Gilles Caulier wrote:
>      >>> Hi,
>      >>>
>      > ...
>      >>>
>      >> I tried to find out software that can display Gimp 2.10 XCF format:
>      >> except Gimp, none !
>      >> To see my work with an other software than Gimp, i have to
>     convert .xcf
>      >> open source to .psd photoshop proprietary... :(
>      >
>      > I believe tumbler (https://docs.xfce.org/xfce/thunar/tumbler) can
>     at least
>      > show thumbnails. Don't know if it uses some other app to generate
>     them.
>      >
>
>     Great, Tumbler displays multi-layers xcf thumbnails in last Thunar .
>     It seems it's the only one, except Gimp, that can do it.
>     https://github.com/xfce-mirror/tumbler
>     I don't know if it possible to integrate it in Digikam...

--
Greetings

Maderios