[PATCH RFC] xdg-shell: Add tiled states

[Drew DeVault]

This protocol seems to be barking up the wrong tree. This protocol only
serves traditional floating WMs for whom tiling only goes as far as
filling 50% of the screen with a window (as mentioned by others) and
isn't very flexible beyond that. I think this should be addressed in two
alternative ways:

1. Surfaces always respect the geometry they're given by the compositor.
I'm looking at you, gnome-calculator.
2. A protocol that communicates window management capabilities from the
compositor to the surfaces like whether or not maximizing or minimizing
surfaces makes sense in this compositor.

Then if you need an extra protocol for your floating WM's 50% stuff so
that the windows can adjust their window decorations or whatnot then
that should be seperate.

I also think with respect to window decorations that there needs to be a
protocol that communicates a preference between the compositor and the
clients. The compositor should be able to say "please don't draw window
decorations" and the client should either say "okay" or "but I have
meaningful UI components in my window decorations so I'm gonna draw them
anyway, and I'm letting you know that so you don't do it for me".

--
Drew DeVault