Sorry for the late reply. I don't know how to implement touch events properly under Wayland. Looking at the Wayland touch event documentation I get the implression that Wayland's touch support is only the "simple form" that sends single touch events - as opposed to sending "swipe", "zoom", "rotate", and other complex events. You would need to compose such complex events yourself. Disclaier: I'm not a Wayland expert.

Regarding x11 touch events, the only point I can remember is that you probably need (or should use?) libinput, but I don't know how to use it.

Good luck!

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