Type Alias FallbackSelectionFn

pub type FallbackSelectionFn<'a> = Box<dyn Fn(char, &[ID], &mut Arc<Database>) -> Option<ID> + Send + Sync + 'a>;

A shorthand for FontResolver’s fallback selection function.

This function receives a specific character, a list of already used fonts, and a font database. It should return the ID of a font that

• is not any of the already used fonts
• is as close as possible to the first already used font (if any)
• supports the given character

The function can search the existing database, but can also load additional fonts dynamically. See the documentation of FontSelectionFn for more details.

Aliased Type

pub struct FallbackSelectionFn<'a>(/* private fields */);