both nd and ngui now acquire semantic versioning recorded at the build
time. they also report the version at startup and -v flag.
this is useful for a release process and to avoid potential
compatibility issues in the future.
in a regular build flow, the version is taken from a git tag using the
following command:
git -C . describe --match 'v*.*.*' --tags
in a non-standard scenario where git isn't available, the version can
be provided on the command line during build like so:
zig build -Dversion=1.2.3
if both git and command line supplied versions are available, they must
match.
functions declared in ui.h were actually used by ui.c, the opposite of
what such a header is expected to contain. these functions are defined
in zig code and declarations are better off in the same ui.c file.
this is just a quick clean up before porting some C code to zig.
the idea is for all zig code to use C LVGL only via this
new module lvgl.zig, all display and input driver/devices is handled
by drv.zig.
this makes C/zig nicely compartmentalized in just a handful places.
16px looks easier to read but IPv6 addresses don't fit in the wifi
settings panel anymore. need to find a better way how to display them or
change font.
alex