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Font

zng_app::render

Trait Font 

Source 
pub trait Font {
    // Required methods
    fn is_empty_fallback(&self) -> bool;
    fn renderer_id(
        &self,
        renderer: &ViewRenderer,
        synthesis: FontSynthesis,
    ) -> FontId;
}
Expand description

A text font.

This trait is an interface for the renderer into the font API used in the application.

Required Methods§

Source

fn is_empty_fallback(&self) -> bool

Gets if the font is the fallback that does not have any glyph.

Source

fn renderer_id( &self, renderer: &ViewRenderer, synthesis: FontSynthesis, ) -> FontId

Gets the instance key in the renderer namespace.

The font configuration must be provided by self, except the synthesis that is used in the font instance.

Dyn Compatibility§

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors§