there's a fun little struct called `WrappedText(String)` that I created for this. the only way to construct it is by giving the unwrapped &str and the desired width, along with the font to consider for calculating widths.
from that, it will wrap the text, placing the final String into the struct's field.
that means that the wrapping occurs once, on construction, and that types that require pre-wrapped text to work (efficiently) can rely on it being wrapped.