Trait graphics::character::CharacterCache

pub trait CharacterCache {
    type Texture: ImageSize;
    type Error;
    fn character<'a>(
        &'a mut self, 
        font_size: FontSize, 
        ch: char
    ) -> Result<Character<'a, Self::Texture>, Self::Error>;

    fn width(
        &mut self, 
        size: FontSize, 
        text: &str
    ) -> Result<Scalar, Self::Error> { ... }
}

Stores characters in a buffer and loads them by demand.

Associated Types

type Texture: ImageSize

The texture type associated with the character cache.

type Error

The error type associated with the character cache.

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Required methods

fn character<'a>(
    &'a mut self,
    font_size: FontSize,
    ch: char
) -> Result<Character<'a, Self::Texture>, Self::Error>

Get reference to character.

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Provided methods

fn width(&mut self, size: FontSize, text: &str) -> Result<Scalar, Self::Error>

Return the width for some given text.

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Implementors

impl<'b, F, T: ImageSize> CharacterCache for GlyphCache<'b, F, T> where
    T: CreateTexture<F> + UpdateTexture<F>, 

type Texture = T

type Error = T::Error

fn character<'a>(
    &'a mut self,
    size: FontSize,
    ch: char
) -> Result<Character<'a, T>, Self::Error>

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