Using `gtk4-layer-shell` still seems like the path of least resistance,
and to my delight it pretty much Just Works. Hurrah!
This implementation could do with some further polish (e.g. animations,
which can be implemented via libadwaita's animations API, and global
shortcuts), but as a MVP it works well enough.
It even supports tabs!
Fixes#4624.
The GTK side of appearance code is kind of a mess with several different
functions all having the responsibility of interacting with each other
and setting the appropriate window appearance. It should solely be the
responsibility of the `syncAppearance` function to apply appearance
changes, with other callbacks/functions calling it instead: much like
what we already do for the macOS apprt.
`WINDOWID` is the conventional environment variable for scripts that
want to know the X11 window ID of the terminal, so that it may call
tools like `xprop` or `xdotool`. We already know the window ID for
window protocol handling, so we might as well throw this in for
convenience.
This is, admittedly, a very silly bug. On GNOME the SSD protocol is not
available and past me just decided to always enable CSDs in that case,
*even when* `window-decoration = none`. I now question my own intelligence.
Fixes#4631
This introduces a mechanism by which parsed config fields can be renamed
to maintain backwards compatibility. This already has a use case --
implemented in this commit -- for `background-blur-radius` to be renamed
to `background-blur`.
The remapping is comptime-known which lets us do some comptime
validation. The remap check isn't done unless no fields match which
means for well-formed config files, there's no overhead.
For future improvements:
- We should update our config help generator to note renamed fields.
- We could offer automatic migration of config files be rewriting them.
- We can enrich the value type with more metadata to help with
config gen or other tooling.
