thumbnail for XCF files

[kaizubg at gmail.com]

You are correct. My findings were based  on a file where "destructive editing" was done. In
a file where "non destructive editing" (ie. Gimp 3.0 features in use) the thumbnail is not
visible.  


ti, 2025-11-11 kello 17:35 +0100, leoutation at gmx.fr kirjoitti:
> On 11/10/25 12:45 PM, kaizubg at gmail.com wrote:
> > Hi,
> > 
> > This has been on my list of wanted, but not requested, digiKam feature 
> > list quite some time.
> > 
> > Tested with a recent 8.9.0 appimage on Fredora 43 . The thumbnail and 
> > the preview of the XCF file are visible on digiKam correctly.
> > 
> Hi
> Correctly with "non destructive editing", did you test it?
> See report about three XCF issues and their causes:
> KImageformats doesn't display some XCF files created with Gimp 3
> https://bugs.kde.org/show_bug.cgi?id=491795
> 
> > Thanks!
> > 
> > Kai
> > 
> > 
> > 
> > 
> > ma, 2025-11-10 kello 10:20 +0100, Gilles Caulier kirjoitti:
> > > Hi,
> > > 
> > > The XCF thumbnailer comes from the KDE kimageformat codecs collection.
> > > The KDE framework used in 8.8.0 is not the last stable version
> > > published. Thttps://invent.kde.org/frameworks/kimageformats/-/ 
> > > issueshis <https://invent.kde.org/frameworks/kimageformats/-/issueshis>
> > > can explain the dysfunction if this one is now fixed in the last
> > > version of code.
> > > 
> > > I plan to update the KDE framework for the digiKam 8.9.0.
> > > 
> > > XCF code history :
> > > https://invent.kde.org/frameworks/kimageformats/-/commits/master/src/ 
> > > imageformats/xcf.cpp?ref_type=heads <https://invent.kde.org/ 
> > > frameworks/kimageformats/-/commits/master/src/imageformats/xcf.cpp? 
> > > ref_type=heads>
> > > KDE framework used in 8.8.0 : 6.17.0 (2025-08-08)
> > > Current KDE framework version : 6.19.0 (2025-10-16)
> > > 
> > > To report this problem (if it's not yet fixed), please create an
> > > UPSTREAM bug in this repository:
> > > 
> > > https://invent.kde.org/frameworks/kimageformats/-/issues <https:// 
> > > invent.kde.org/frameworks/kimageformats/-/issues>
> > > 
> > > Best regards
> > > 
> > > Le lun. 10 nov. 2025 à 09:45, frederic chaume
> > > <frederic.chaume at gmail.com <mailto:frederic.chaume at gmail.com>> a écrit :
> > > > 
> > > > Hi all
> > > > 
> > > > I'm using Gimp 3.0 to create pictures, and until DK8.7, I was able to
> > > > see the thumbnail of the xcf file, but in DK8.8, if I modify the file, I
> > > > don't see the thmbnail any more , just the file type (XCF).
> > > > Any idea?
> > > > 
> > > > I'm on Win11
> > > > 
> > > > regards
> > > > Frederic
> > > > 
> > > > 
> > 
> 
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