Trait Format 

pub trait Format {
    // Required methods
    fn null() -> Self;
    fn width(&self, c: char) -> Option<Scaled>;
    fn height(&self, c: char) -> Option<Scaled>;
    fn depth(&self, c: char) -> Option<Scaled>;
    fn default_space(&self) -> Glue;
    fn extra_space(&self) -> Scaled;

    // Provided method
    fn width_height_depth(&self, c: char) -> Option<[Scaled; 3]> { ... }
}

Implementations of this trait provide the minimal set of features required by a font format.

Required Methods

fn null() -> Self

Return the null font in this format.

fn width(&self, c: char) -> Option<Scaled>

Get the width of the character, or None if the character is not defined in the font.

fn height(&self, c: char) -> Option<Scaled>

Get the height of the character, or None if the character is not defined in the font.

fn depth(&self, c: char) -> Option<Scaled>

Get the depth of the character, or None if the character is not defined in the font.

fn default_space(&self) -> Glue

fn extra_space(&self) -> Scaled

Provided Methods

fn width_height_depth(&self, c: char) -> Option<[Scaled; 3]>

Get the width, height and depth of the character, or None if the character is not defined in the font.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors