[dolphin] [Bug 500624] New: When zooming, 1 of the zoom change make linked files (soft link) with generated thumbnail have less zoomed thumbnails (and overlay emblem)

[Dimitri]

https://bugs.kde.org/show_bug.cgi?id=500624

            Bug ID: 500624
           Summary: When zooming, 1 of the zoom change make linked files
                    (soft link) with generated thumbnail have less zoomed
                    thumbnails (and overlay emblem)
    Classification: Applications
           Product: dolphin
           Version: 24.12.2
          Platform: Neon
                OS: Linux
            Status: REPORTED
          Severity: minor
          Priority: NOR
         Component: panels: folders
          Assignee: dolphin-bugs-null at kde.org
          Reporter: dimitri-r at gmx.com
                CC: kfm-devel at kde.org
  Target Milestone: ---

SUMMARY
In Dolphin 24.12.2, when zooming, one of the zoom change make linked files
(soft link) with generated thumbnail to have less zoomed thumbnails (and
overlay emblem) than before zoom. Other type of file (not soft link or without
generated thumbnail like empty folder) are zoomed consistently.


STEPS TO REPRODUCE
1. Open Dolphin 24.12.2 or higher in a folder with a folder that has a link to
file (and maybe a regular file).
2. Unzoom. Then zoom and see if for one of the zoom change, thumbnails of
link-file and their overlay become less zoomed (and other type of file keeps
behaving normally)

OBSERVED RESULT
When crossing the threshold in a zoom, those thumbnails and their overlay are
becoming smaller instead of bigger.
When crossing the threshold in a unzoom , those thumbnails and their overlay
are becoming bigger instead of smaller.
Empty folder (that don't have a generation of thumbnails) and non link file are
not affected.

EXPECTED RESULT
Every file, soft link or not, with generated thumbnail or not, should become
bigger when zooming in and smaller when zooming out for every step of zoom.

SOFTWARE/OS VERSIONS
Dolphin Version 24.12.2
Operating System: KDE neon 6.2
KDE Plasma Version: 6.3.0
KDE Frameworks Version: 6.10.0
Qt Version: 6.8.2
Kernel Version: 6.11.0-17-generic (64-bit)
Graphics Platform: Wayland


ADDITIONAL INFORMATION
This bug came with Dolphin 24.12.2 and is probably related to the patch
submitted in bug 497372 and/or bug 498211 (both related to thumbnails
overlays).
Before that version, zoom levels were more inconsistent on overlay icons of
thumbnails but I think they were consistent for size of generated thumbnails
(other than overlay).

I don't know if I should open a new bug report about soft link with generated
thumbnails to always have a smaller thumbnails than non-link generated
thumbnails even under the zoom threshold or if I should consider this to be
included in this bug report (which for now is focusing on the behavior around
the threshold).

It is also possible to consider that the mention of overlays of thumbnail
(which starts to not having not the same size between those two type of file
above the threshold) is the continuation of bug 498211 (about overlays
difference between files) or of bug 497372 (about overlays not having coherent
size between zoom). If overlays should be treated as separate bug (probably
continuation of bug) than the rest of thumbnail, consider this bug to be about
thumbnail regardless of their overlays.

This behavior is already showed in attachment 178642. If asked I can add a new
video to the bug report and it could have in it the two type of case instead of
just the affected one.

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