Bug 486036 - Blurry folder/file icons with 22px zoom and fractional display scale in Dolphin
Summary: Blurry folder/file icons with 22px zoom and fractional display scale in Dolphin
Status: REPORTED
Alias: None
Product: dolphin
Classification: Applications
Component: view-engine: general (show other bugs)
Version: 24.02.1
Platform: Fedora RPMs Linux
: NOR normal
Target Milestone: ---
Assignee: Dolphin Bug Assignee
URL:
Keywords: accessibility, usability
Depends on:
Blocks:
 
Reported: 2024-04-23 20:03 UTC by Pavel Dobiáš
Modified: 2024-08-21 22:12 UTC (History)
2 users (show)

See Also:
Latest Commit:
Version Fixed In:
Sentry Crash Report:


Attachments
Screenshot of Dolphin capturing the issue. (81.30 KB, image/png)
2024-04-23 20:03 UTC, Pavel Dobiáš
Details

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Description Pavel Dobiáš 2024-04-23 20:03:52 UTC
Created attachment 168846 [details]
Screenshot of Dolphin capturing the issue.

SUMMARY
Using Dolphin with any view mode and fractional display scale (125% or 175%) renders folder and file icons blurry in the general view. It specifically affects the file/folder view and doesn't affect other icons, like those in places sidebar.

STEPS TO REPRODUCE
1. Make sure to use Wayland and have 125% or 175% display scale.
2. Open dolphin.
3. Set zoom to 22px.
4. Observe blurry icons in the general file/folder view.

OBSERVED RESULT
Icons for folders and files in the file/folder view render blurred. You can easily compare them with the places sidebar right next to the view, by setting the icons in places sidebar to 22px as well. Also changing to non-fractional display scale, like 150%, can make the difference clear.

EXPECTED RESULT
Icons render without blur, just like they should.

SOFTWARE/OS VERSIONS
Windows: N/A
macOS: N/A
Linux/KDE Plasma: Fedora 40
(available in About System)
KDE Plasma Version: 6.0.3
KDE Frameworks Version: 6.0.0
Qt Version: 6.6.2

ADDITIONAL INFORMATION
- You can directly compare the icons in my provided screenshot (places sidebar vs general view).
- I currently use Fedora Linux, but OpenSUSE Tumbleweed w/ KDE Plasma also had the issue last time I used it.
Comment 1 Pavel Dobiáš 2024-08-21 22:12:03 UTC
Might be related to https://bugs.kde.org/show_bug.cgi?id=479891 as the temporary fix mentioned there, involving QT_SCALE_FACTOR_ROUNDING_POLICY, has solved this problem as well.