Instead of doing this roundabout thing where we get the surface from the
view, let's instead get it from the `wlr_surface_state` that we already
track in `handle_commit`. This makes the NULL state impossible which is
what the old `get_geometry` is checking for and generally cleans
things up a little bit.
Also don't check if the geometry x/y changed, those will always
be 0 for xwayland.
Across a wayland compositor, there are multiple shells: It can be
a toplevel, or a layer_shell, or even something more meta like a drag
icon or highlight indicators when dragging windows around.
This object lets us store values that represent these modes of operation
and keep track of what object is being represented.
Since output layout is destroyed when the wayland display is destroyed
we run into a destroy listener order problem: Either the display starts
destroying the outputs first, in which case we're good: The existing
handling will clean up. However, things go wrong if the display decides
to destroy the output layout first. In this case, sway will hold
invalid references to the output layout as part of each output so that
when it finally goes to destroy them, sway will dereference destroyed
output layout bits.
Ref: https://github.com/swaywm/sway/pull/6844#issuecomment-1843599513
`gcc-14` added a new warning around dangerous use of `strncpy()` withi
known overflow:
../sway/config.c: In function 'do_var_replacement':
../sway/config.c:983:33: error: '__builtin___strncpy_chk' specified bound depends on the length of the source argument [-Werror=stringop-truncation]
983 | strncpy(newptr, var->value, vvlen);
| ^
../sway/config.c:971:45: note: length computed here
971 | int vvlen = strlen(var->value);
| ^~~~~~~~~~~~~~~~~~
It's a bit fishy to rely on truncating behaviour of `strncpy()`. The
change uses `memcpy()` as more explicit way to express copy of `vvlen`
bytes.
Remove any existing executed criteria items at unmap time. If a window
gets unmapped but not destroyed, we want to reapply 'for_window'
criteria. Fixes#6905.