i was searching for vector ui libraries, and would like to understand, whether it is a good idea today, and found this library, so cute and nice. https://littlevgl.com/
not what i was searching at all, i was searching for a desktop library.
some video from their site:
btw, firemonkey started as a vector gui library (was called vgscene back then), then got purchased by embarcadero, and now it is a raster library, probably for performance reasons.