wmww
Display lock screen popups
Contains what I've got so far for showing popups (and maybe in the future toplevels) on the lock screen. It kinda works now, but isn't production-ready (popups aren't placed correctly, and it's not well tested) so I didn't put it in v1.1.0. I may work on this soon or let it sit for a while. Let me know if popups not showing up is causing you a problem.
Can confirm that tooltips (and context menus) show up when using this branch.
On a personal level I am not that interested in lock-screens but having the session-lock implementation in gtk4-layer-shell should allow to build relatively fancy ones for people interested. And for anything fancy, tooltips and context menus sound like a good thing to support. So the approach of using subsurfaces makes sense to me.
