https://bugs.kde.org/show_bug.cgi?id=392706
Rog131 <samrog...@hotmail.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |samrog...@hotmail.com
Component|view-engine: general |default
Assignee|dolphin-bugs-n...@kde.org |plasma-b...@kde.org
Product|dolphin |kio-extras
--- Comment #1 from Rog131 <samrog...@hotmail.com> ---
(In reply to David Tonhofer from comment #0)
> Created attachment 111812 [details]
> Example of failed previews
>
> If you upload an jpg image and Dolphin grabs it to generate a preview, it
> may stay "half gray" as the preview fails mid-way.
>
> This is not so bad, but Dolphin should be back later for a re-take on the
> preview - this does not happen (how do into explicitly telling Dolphin to
> redo the previews?)
>
> Fixing this would mean keeping a database about temporarily failed previews
> somewhere (a portable SQL database or something)
The Dolphin is using KDE KIO to create and manage the thumbnails. Resetting the
product to the kio-extras as the jpg thumbnailer is part of the kio-extras.
The KDE is following the Freedesktop standards and specifications. There is
Thumbnail Managing Standard:
https://specifications.freedesktop.org/thumbnail-spec/thumbnail-spec-latest.html
. The standard has 'Thumbnail Creation Failures':
https://specifications.freedesktop.org/thumbnail-spec/thumbnail-spec-latest.html#FAILURES.
I'm not sure if the KDE has implement it ?
To redo the thumbnails the user can clean the thumbnail cache:
- Gwenview has this in the advanced settings.
- Sweeper ( https://www.kde.org/applications/utilities/sweeper/ ) has this
option - needs Git commit 9c9586579f6f0dc7c0db73cf7683e94ab61526d7 -
https://bugs.kde.org/show_bug.cgi?id=361482#c12
There is also an option to make a servicemenu to remove single thumbnails.
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