Created attachment 162972 [details]
full log and XCF file example
Digikam git doesn't display layers in XCF files, even in thumbnails
See full log and XCF file example in attachment
Created attachment 162973 [details]
You already know from Bug 466821 that the XCF image loader is part of the KImageFormats-Plugins.
You can see from this error message that it is currently not implemented:
kf.imageformats.plugins.xcf: Unhandled mode XCFImageFormat::GIMP_LAYER_MODE_NORMAL
I discover now PcmanFm-Qt and PcManFM gtk3 can display multilayers XCF thumbnails, i'm wondering how it works.
As far as I know, Gimp creates a thumbnail in the thumbnail cache when you save an image. This is displayed by file managers.
(In reply to Maik Qualmann from comment #5)
> As far as I know, Gimp creates a thumbnail in the thumbnail cache when you
> save an image. This is displayed by file managers.
I tested XCF multilayers thumbnails display with other file managers:
Dolphin 23.08.3 doesn't do it at all
Nautilus 45.1, Thunar 4.18.8, PCmanfm-QT 1.4.0 display these thumbnails...during one second, then strangely, thumbnail disappear...
Only PCmanfm 1.3.2 (Gtk3) can display XCF multilayers thumbnails normally
Issues with XCF layers files is old story. This one was reported more seven years ago
Same time, it was reported to ImageMagick team too
Dev comment: "Its not a bug. ImageMagick does not support Gimp 2.10 .XCF images. We may support the format in the future but currently we do not have an ETA on when support will be added."
I'm wondering if other soft than IM, Kimageformats or Graphicsmagick, exist to display XCF files with layers or/and 16 bits XCF files.