Trait Fonts

pub trait Fonts: Any {
    // Required methods
    fn load(&mut self, source: FontSource<'_>, name: Option<&str>);
    fn layout(
        &mut self,
        paragraph: &Paragraph,
        width: f32,
    ) -> Vec<TextLayoutLine>;
    fn measure(&mut self, paragraph: &Paragraph, width: f32) -> Size;
}

A trait for managing fonts and text layout.

Required Methods

fn load(&mut self, source: FontSource<'_>, name: Option<&str>)

Load the given font source.

If name is provided, the fonts will be registered under that name instead of the default name provided by the source.

fn layout(&mut self, paragraph: &Paragraph, width: f32) -> Vec<TextLayoutLine>

Layout the given paragraph with the given max width.

fn measure(&mut self, paragraph: &Paragraph, width: f32) -> Size

Measure the given paragraph with the given max width.

Implementations

impl dyn Fonts

pub fn downcast_ref<T>(&self) -> Option<&T>

where T: Fonts,

Attempt to downcast a reference to a concrete type.

pub fn downcast_mut<T>(&mut self) -> Option<&mut T>

where T: Fonts,

Attempt to downcast a mutable reference to a concrete type.

Implementors