KWin support

[moverest]

Current support for KWin is very limited: the tool can be run (with the --only-print option) but it won't move the pointer itself. Also, it cannot take a screenshot given it's using a Wayland interface that is not supported by KWin.

In short, for KWin to be fully supported, we need to be able to:

• Move the cursor to a specific location and trigger clicks. For this, we could try using the XDG Portal's RemoteDesktop API.
• Take screenshots of a give region. For this, we could try using the KWin's D-Bus org.kde.KWin.ScreenShot2 interface. The XDG Screenshot interface is too slow for this and uses the former under the hood anyway.

Additionally, we could provide a KWin script (or anything else) to run the program only for the current windows — similar to the wl-kbptr-sway-active-win helper script.

See Lobte.rs discussions:

• https://lobste.rs/s/qgvx5p/wl_kbptr_control_mouse_pointer_with#c_kp54bi
• https://lobste.rs/s/qgvx5p/wl_kbptr_control_mouse_pointer_with#c_q2ioe6
• https://lobste.rs/s/qgvx5p/wl_kbptr_control_mouse_pointer_with#c_y7gz3o

[Akselmo]

Aks from lobste.rs here, like I said I'm intrigued by this problem so I might give it a try as well if I have time. (Maybe this weekend). Can't promise anything though.

[Gliese852]

See what else Kwin has https://wayland.app/protocols/kde-fake-input

[Gliese852]

Also managed to move the mouse cursor in Kwin directly using libei. You can get a socket fd on dbus via org.kde.KWin.EIS.RemoteDesktop.connectToEIS.