https://bugs.kde.org/show_bug.cgi?id=412083
Bug ID: 412083
Summary: Image previews scaled incorrectly on hidpi
Product: digikam
Version: 6.3.0
Platform: Archlinux Packages
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: ImageEditor
Assignee: digikam-bugs-n...@kde.org
Reporter: alex.me...@kde.org
Target Milestone: ---
SUMMARY
When desktop scaling is used (Plasma desktop, set via the Displays section of
System Settings, on a HiDPI display), the After images of previews in the Image
Editor are scaled differently to the Before images
STEPS TO REPRODUCE
1. Set desktop scaling (eg: to 1.5) and logout/login to apply
2. Open an image in Digikam in the Image Editor (Tools -> Image Editor)
3. Select White Balance (for example) from the Colours menu
4. Move the mouse to the control pane (to cause the After image to be
displayed)
OBSERVED RESULT
The image appears larger (2x?) when the mouse is over the control pane (After
image) than when it is over the image itself (Before image). The Before image
has the same scaling as when no tool is selected.
EXPECTED RESULT
The image is scaled the same amount in both cases.
SOFTWARE/OS VERSIONS
Linux/KDE Plasma:
(available in About System)
KDE Plasma Version: 5.16.5
KDE Frameworks Version: 5.62.0
Qt Version: 5.13.1
ADDITIONAL INFORMATION
I also tried compiling the latest master (both Frameworks and DigiKam), and the
issue was still there.
When I use a non-hidpi monitor and disable scaling, the problem goes away.
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