https://bugs.kde.org/show_bug.cgi?id=516951
Bug ID: 516951
Summary: With custom global scale set, remote mousepad cursor
resets position when touching borders
Classification: Applications
Product: kdeconnect
Version First unspecified
Reported In:
Platform: openSUSE
OS: Linux
Status: REPORTED
Severity: minor
Priority: NOR
Component: desktop-application
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
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SUMMARY
When using x11, touching borders with kdeconnect mousepad plugin with custom
global scale set moves cursor to a another position on the screen. The ratio
seems to be related (200% global scale => cursor moves 50% of it's
coordinates).
STEPS TO REPRODUCE
1. Using X11, change global scale to 200% in your settings and reboot to apply,
2. Using kdeconnect app, use mousepad plugin and touch either right or bottom
border,
OBSERVED RESULT
You should see your cursor move to 50% of the x/y coordinates, eg. touching
bottom-left corner moves cursor to screen center.
EXPECTED RESULT
The cursor should remain in it's position near the border.
SOFTWARE/OS VERSIONS
Windows:
macOS:
(available in the Info Center app, or by running `kinfo` in a terminal window)
Linux/KDE Plasma: openSUSE Tumbleweed 20260220
KDE Plasma Version: 6.6.0
KDE Frameworks Version: 6.23.0
Qt Version: 6.10.2
ADDITIONAL INFORMATION
The related source code is :
https://invent.kde.org/network/kdeconnect-kde/-/blob/master/plugins/mousepad/x11remoteinput.cpp?ref_type=heads#L208
I would suppose that the strange behaviour might be QT related where the max
coordinates clamping (when going above border limits) mixes real pixels or DIP.
NOTE
I am interested to investigate this issue (i am not QT familiar) and if
successful suggest a fix in a MR :D
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