Struct SystemFontSource 

pub struct SystemFontSource { /* private fields */ }

The engine’s font manager: the platform’s installed fonts through a FontManager, and the two family names Flutter’s engine defines for the platform’s own user-interface font.

CupertinoSystemText is that font at text sizes and CupertinoSystemDisplay at display sizes, each answered with every weight the platform has, as the engine registers them (txt/platform_mac.mm: the display face at its 29-point breakpoint, the text face by the default fallback). Every other family, and character fallback, goes to the manager.

Implementations

impl SystemFontSource

pub fn new(manager: Box<dyn FontManager>) -> SystemFontSource

Over manager: a host’s own lookup, or one that answers across a boundary.

pub fn platform() -> SystemFontSource

Over this platform’s own font manager.

pub fn set_locales(&mut self, locales: Vec<String>)

The languages character fallback prefers, BCP 47, most preferred first (Flutter’s PlatformDispatcher.locales).

Trait Implementations

impl FontSource for SystemFontSource

fn family(&mut self, name: &str) -> Vec<Font>

family returns every available face matching a family name.

fn face_for_codepoint( &mut self, codepoint: char, attrs: FontAttrs, ) -> Option<Font>

face_for_codepoint returns a covering face nearest to attrs.