Trait crossfont::Rasterize

pub trait Rasterize {
    type Err: Error + Send + Sync + 'static;
    fn new(
        device_pixel_ratio: f32, 
        use_thin_strokes: bool
    ) -> Result<Self, Self::Err>
    where
        Self: Sized;
    fn metrics(&self, _: FontKey, _: Size) -> Result<Metrics, Self::Err>;
    fn load_font(&mut self, _: &FontDesc, _: Size) -> Result<FontKey, Self::Err>;
    fn get_glyph(&mut self, _: GlyphKey) -> Result<RasterizedGlyph, Self::Err>;
    fn update_dpr(&mut self, device_pixel_ratio: f32);
}

Associated Types

type Err: Error + Send + Sync + 'static

Errors occurring in Rasterize methods.

Loading content...

Required methods

fn new(
    device_pixel_ratio: f32,
    use_thin_strokes: bool
) -> Result<Self, Self::Err> where
    Self: Sized, 

Create a new Rasterizer.

fn metrics(&self, _: FontKey, _: Size) -> Result<Metrics, Self::Err>

Get Metrics for the given FontKey.

fn load_font(&mut self, _: &FontDesc, _: Size) -> Result<FontKey, Self::Err>

Load the font described by FontDesc and Size.

fn get_glyph(&mut self, _: GlyphKey) -> Result<RasterizedGlyph, Self::Err>

Rasterize the glyph described by GlyphKey..

fn update_dpr(&mut self, device_pixel_ratio: f32)

Update the Rasterizer's DPI factor.

Loading content...

Implementors

impl Rasterize for FreeTypeRasterizer

type Err = Error

fn new(device_pixel_ratio: f32, _: bool) -> Result<FreeTypeRasterizer, Error>

fn metrics(&self, key: FontKey, _size: Size) -> Result<Metrics, Error>

fn load_font(&mut self, desc: &FontDesc, size: Size) -> Result<FontKey, Error>

fn get_glyph(&mut self, glyph_key: GlyphKey) -> Result<RasterizedGlyph, Error>

fn update_dpr(&mut self, device_pixel_ratio: f32)

Loading content...