In https://github.com/InfiniTimeOrg/InfiniTime/pull/1097 new font
generation capabilites were added. Generalize the font creation to
make it possible to reuse the `displayapp/fonts/CMakeLists.txt` file
for `InfiniSim` and just add the new cmake file to the project and
link against the new `infinitime_fonts` target.
In the following a list of changes.
Allow non-global installed `lv_font_conv` executable installed with
```sh
npm install lv_font_conv@1.5.2
```
In CMake we search for `lv_font_conv` executable. Add the found
executable to the python script `generate.py`, to remove the need for
`lv_font_conv` to be in the path.
Search for `python3` executable, if CMake version 3.12 is available.
Otherwise use `python` as hard coded executable.
Instead of adding the generated fonts to `SOURCE_FILES` variable, create
a static library `infinitime_fonts`. Link this library to the
executables instead.
Use `add_custom_target()` together with `add_custom_command()` to
generate the font.c files once (like the original PR does).
Also, removed feature existance cheking (since it now depends on a font,
so may end up being inside (only) a font not being used currently -
which is an allowed usage)
The scrollbar would go out of bounds if DROPDOWN_PART_LIST had uneven
padding. Also enable clip_corner feature to stop the selected item from
overflowing.
When the screen switches, the full screen needs to be refreshed for the
hardware scrolling to work. This was enforced with backgroundLabels, but
is simpler to do with a rounder function.
List.h uses `std::array` as container, but is missing the `<array>`
include. Add it to make the header self contained.
The `memory` include is unused and can be removed.
There is a large step in brightness from level zero to level one.
After experimenting with various ST7789 options, I found that
decreasing VDV to 0x10 (-0.4V) fixes this issue.
The gamma change reduced the average error in brightness, but with the
underlying issue fixed, the gamma change has been reverted.
