https://bugs.kde.org/show_bug.cgi?id=513604
Bug ID: 513604
Summary: There is no option to allow X11 apps to see all mouse
input
Classification: Plasma
Product: kwin
Version First 6.5.4
Reported In:
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: xwayland
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
SUMMARY
While there is an option to allow X11 apps to see all keystrokes everywhere
(Legacy X11 App Support → Listening for keystrokes: Always allowed), there is
no option to allow X11 apps to see the mouse inputs (positions and clicks)
everywhere.
This means eg. an input visualizer overlay like Screenkey or
https://github.com/univrsal/input-overlay is unable to show mouse clicks if the
cursor is in a native Wayland app, and that it is impossible for the user to
sacrifice security and opt into visualizing all their mouse inputs.
STEPS TO REPRODUCE
0. (In a Plasma Wayland session)
1. Set System Settings → Legacy X11 App Support → Listening for keystrokes:
Always allowed and Listening for mouse buttons: Allowed
2. Relog to apply changes
3. Install an X11 input visualizer like Screenkey or the OBS plugin
https://github.com/univrsal/input-overlay; I'll assume Screenkey
4. Start Screenkey.
5. Also open another XWayland window with eg.:
env QT_QPA_PLATFORM=xcb konsole
6. Notice keystrokes are logged anywhere they happen while mouse clicks are
only logged in an XWayland window.
OBSERVED RESULT
The X11 input visualizer is unable to see mouse input from Wayland apps in this
configuration. There is no option to allow it to.
EXPECTED RESULT
There is an option to allow an X11 app to see all mouse input.
SOFTWARE/OS VERSIONS
Operating System: Arch Linux
KDE Plasma Version: 6.5.4
KDE Frameworks Version: 6.21.0
Qt Version: 6.10.1
Kernel Version: 6.12.62-1-lts (64-bit)
Graphics Platform: Wayland
ADDITIONAL INFORMATION
This bug report is spun off of my comment at
https://invent.kde.org/plasma/kwin/-/issues/202#note_1370818
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