https://bugs.kde.org/show_bug.cgi?id=510829
Bug ID: 510829
Summary: Animated image formats (GIF, et plus) scaled
incorrectly in information panel
Classification: Applications
Product: dolphin
Version First 25.08.2
Reported In:
Platform: Arch Linux
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Target Milestone: ---
Created attachment 185923
--> https://bugs.kde.org/attachment.cgi?id=185923&action=edit
Incorrect scaling behavior in Dolphin
SUMMARY
GIF, animated AVIF, animated JXL, and animated WebP files are all scaled
incorrectly when viewed in Dolphin.
This effect decreases as display scaling increases, with the issue being more
noticeable at display scalings under 200%.
I would guess that this is connected to Bug 497576, because this has very
similar behavior to what used to affect ALL image types (not just animated
ones) prior to the resolution of Bug 497576.
STEPS TO REPRODUCE
On 150% display scaling:
1. Obtain an animated gif, avif, jxl, or webp file (or another animated type
that Dolphin supports
2. Open Dolphin to the directory of the file
3. Ensure that View -> Show Panels -> Information is enabled, and the
information panel to the right is viewable
4. Right-click the Information panel and ensure that Preview is enabled
5. Click on or hover over the animated gif, avif, jxl, or webp file.
OBSERVED RESULT
The file is shown wildly not to scale, slightly pixelated and too large for its
frame. The outer parts of the animated graphic are cut off.
EXPECTED RESULT
The entire animated image is cleanly visible in the preview frame, with no
unnecessary pixelation and proper scaling.
SOFTWARE/OS VERSIONS
Operating System: Arch Linux
KDE Plasma Version: 6.4.5
KDE Frameworks Version: 6.19.0
Qt Version: 6.10.0
Kernel Version: 6.17.3-arch2-1 (64-bit)
Graphics Platform: Wayland
Processors: 22 × Intel® Core™ Ultra 7 155H
Memory: 48 GiB of RAM (46.7 GiB usable)
Graphics Processor: Intel® Arc
Manufacturer: Notebook
Product Name: V54x_6x_TU
System Version: V540TU
ADDITIONAL INFORMATION
I've been experiencing this issue ever since Bug 497576 was introduced, and it
was never fixed alongside it. I apologize for my tardiness in reporting the
issue.
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