Support Wayland?

[onli]

I'm not sure supporting Wayland should be a goal, but I wanted to have this issue to document it.

Fact is, regardless of whether Wayland finally replaces X or not in a to me relevant way, there are interesting Wayland window managers like niri. And in contrast to how Wayland was initially planned out, it is possible to run a dock with them, as niri-wm/niri#1638 shows. At least on some Wayland WMs the relevant protocols seem to be there. Also, wxWidgets does support Wayland now, though I'm not sure how well.

So:

• Check how good the available Wayland docks are. https://github.com/dangvd/crystal-dock in particular looks like it might make a Wayland version of Simdock unnecessary, depends probably on how well it cycles through windows.
• If the existing docks fall short, decide on a wayland environment where simdock could dock onto (pun intended). Again, Niri might be a good choice, the concept is nice, it's popular and the link above shows the technical feasibility.
• Implementing wayland support would mean at the very least abstracting the wnck usage in https://github.com/onli/simdock/blob/master/src/tasks.cc away, so that on wayland it uses whatever is needed there (to my understanding right now, wlr-foreign-toplevel-management is the keyword) while the X11 path stays as it is. https://github.com/onli/simdock/blob/master/src/background.cc also uses Xlib directly, but replacing that on wayland might be quite easy since grabbing the background should be unnecessary there, as compositing would be set. Follow-up tasks for the Makefile. Probably more to do.