This is a lot of work for a small payoff - the mouse cursor is now
correctly rendered over the background.
Containers can now specify a custom arrange function which will be
called during arrange_windows instead of the usual path for that
container type. For backgrounds, the function sends it to the back and
sets its geometry to the size of the screen.
This requires some changes I'm not too happy with in arrange_windows
with respect to how containers figure out the arrangemnet of their
children (special cases are undesirable).
Also, if anyone runs a debug build as their actual WM, you should know
that I've made it so swaybg is invoked as `./bin/swaybg` in debug builds
now.
This PR also includes a bunch of unrelated refactoring. This is a pretty
significant change and I can only test it under the x backend, so I'd
appreciate it if you kind folks would review+test it yourselves and
leave some 👍 if you like it.
Track each panel separately via its wl_resource. `set_panel_position`
might be called before `set_panel`, so reuse panel config.
Place the position in panel_config so that each panel has its own
position.
This does not work as expected. I think the problem is on the wlc side.
Please review, @Cloudef. To reproduce the issues:
1. Run sway
2. Open terminal in sway
3. Run swaybg
swaybg will create a surface and ask to have it set as the background,
but wlc_handle_from_wl_surface_resource will return 0. If the swaybg
surface is a shell surface, then it works - but wlc complains about the
pointer type and segfaults as soon as the pre-render hook tries to draw
the background.
