digiKam 5.7.0 doesn't show krita kra thumbnails

[Gilles Caulier]

The krita thumbnailer is not in digiKam. It's delegate to frameworks from
KDE. It's a run time dependency (QImage loader plugins).

https://github.com/KDE/kio-extras/blob/master/thumbnail/kritacreator.h

https://forum.kde.org/viewtopic.php?f=139&t=135418

Note : more format can be loaded with this one too :
https://api.kde.org/frameworks/kimageformats/html/index.html

If the package is not installed, DK will not recognize the format through
the internal QImage loader and it will try RAW, and video loader. So your
trace is just a side effect of the dysfunction.

If you use the AppImage, the frameworks are compiled and bundled, but for
an obscur reason, there are not found and used. It's a bug in the AppImage
that i build, and i not found yet the reason. A DK compiled and installed
on my system work as expected if extra packages are installed.

Gilles Caulier

2017-10-25 2:58 GMT+02:00 Elle Stone <ellestone at ninedegreesbelow.com>:

> On 10/24/2017 08:50 PM, Elle Stone wrote:
>
>> As per the subject line, krita kra thumbnails aren't displayed in digiKam.
>>
>
> Oh, here's the terminal output when digiKam gets to the kra files - why is
> digiKam trying to load a "video thumb" for a krita kra file?
>
> Is there some additional KDE software that needs to be installed, that
> maybe I haven't yet installed?
>
> #terminal output:
>
> digikam.general: Cannot get video thumb for "/hdd/archive/image_archive/te
> st-files/test-embedded-png.kra"
> digikam.general: Video support is not available
> digikam.general: Cannot get video thumb for "/hdd/archive/image_archive/te
> st-files/test-filmic.xcf"
> digikam.general: Video support is not available
> digikam.general: Cannot get video thumb for "/hdd/archive/image_archive/te
> st-files/krita-good.kra"
> digikam.general: Video support is not available
> digikam.metaengine: Cannot load metadata from file   (Error # 11 :
> /hdd/archive/image_archive/test-files/krita-good.kra: The file contains
> data of an unknown image type
> digikam.general: Trying to load Embedded preview with libraw
> digikam.rawengine: Failed to load embedded RAW preview
> digikam.general: Trying to load half preview with libraw
> digikam.general: Trying to load Embedded preview with Exiv2
> digikam.metaengine: Cannot load metadata using Exiv2   (Error # 11 :
> /hdd/archive/image_archive/test-files/krita-good.kra: The file contains
> data of an unknown image type
> digikam.dimg: "/hdd/archive/image_archive/test-files/krita-good.kra"  :
> QIMAGE file identified
> digikam.dimg.qimage: Can not load " "/hdd/archive/image_archive/test-files/krita-good.kra"
> " using DImg::QImageLoader!
> digikam.general: mimetype =  ""  ext =  "KRA"
> digikam.general: Cannot create thumbnail for "/hdd/archive/image_archive/te
> st-files/krita-good.kra"
> digikam.general: Thumbnail is null for "/hdd/archive/image_archive/te
> st-files/krita-good.kra"
> digikam.general: Cannot get video thumb for "/hdd/archive/image_archive/te
> st-files/krita-good.kra"
> digikam.general: Video support is not available
> digikam.metaengine: Cannot load metadata from file   (Error # 11 :
> /hdd/archive/image_archive/test-files/test-embedded-png.kra: The file
> contains data of an unknown image type
> digikam.general: Trying to load Embedded preview with libraw
> digikam.rawengine: Failed to load embedded RAW preview
> digikam.general: Trying to load half preview with libraw
> digikam.general: Trying to load Embedded preview with Exiv2
> digikam.metaengine: Cannot load metadata using Exiv2   (Error # 11 :
> /hdd/archive/image_archive/test-files/test-embedded-png.kra: The file
> contains data of an unknown image type
> digikam.dimg: "/hdd/archive/image_archive/test-files/test-embedded-png.kra"
> : QIMAGE file identified
> digikam.dimg.qimage: Can not load " "/hdd/archive/image_archive/te
> st-files/test-embedded-png.kra" " using DImg::QImageLoader!
> digikam.general: mimetype =  ""  ext =  "KRA"
> digikam.general: Cannot create thumbnail for "/hdd/archive/image_archive/te
> st-files/test-embedded-png.kra"
> digikam.general: Thumbnail is null for "/hdd/archive/image_archive/te
> st-files/test-embedded-png.kra"
> digikam.general: Cannot get video thumb for "/hdd/archive/image_archive/te
> st-files/test-embedded-png.kra"
> digikam.general: Video support is not available
> digikam.metaengine: Cannot load metadata from file   (Error # 11 :
> /hdd/archive/image_archive/test-files/test-filmic.xcf: The file contains
> data of an unknown image type
> digikam.general: Trying to load Embedded preview with libraw
> digikam.rawengine: Failed to load embedded RAW preview
> digikam.general: Trying to load half preview with libraw
> digikam.general: Trying to load Embedded preview with Exiv2
> digikam.metaengine: Cannot load metadata using Exiv2   (Error # 11 :
> /hdd/archive/image_archive/test-files/test-filmic.xcf: The file contains
> data of an unknown image type
> digikam.dimg: "/hdd/archive/image_archive/test-files/test-filmic.xcf"  :
> QIMAGE file identified
> digikam.dimg.qimage: Can not load " "/hdd/archive/image_archive/test-files/test-filmic.xcf"
> " using DImg::QImageLoader!
> digikam.general: mimetype =  "XCF"  ext =  "XCF"
> digikam.general: Cannot create thumbnail for "/hdd/archive/image_archive/te
> st-files/test-filmic.xcf"
> digikam.general: Thumbnail is null for "/hdd/archive/image_archive/te
> st-files/test-filmic.xcf"
> digikam.general: Cannot get video thumb for "/hdd/archive/image_archive/te
> st-files/test-filmic.xcf"
> digikam.general: Video support is not available
> digikam.general: scan mode: ScanDeferredFiles
> digikam.general: total scan value :  23825
> digikam.database: items to tag ()
> digikam.database: Complete scan took: 558 msecs.
> digikam.general: Event is dispatched to desktop notifier through DBUS
> Creating the cache for: "/hdd/archive/image_archive/te
> st-files/test-embedded-png.kra"
>
>
> --
> http://ninedegreesbelow.com
> Color management and free/libre photography
>
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