Struct Font 

pub struct Font {
    pub metrics: Arc<FontMetrics>,
    pub descriptor: FontDescriptor,
    /* private fields */
}

Fields

metrics: Arc<FontMetrics>

descriptor: FontDescriptor

Implementations

impl Font

pub fn new( template: FontTemplateRef, descriptor: FontDescriptor, data: Option<FontData>, synthesized_small_caps: Option<FontRef>, ) -> Result<Font, &'static str>

pub fn identifier(&self) -> FontIdentifier

A unique identifier for the font, allowing comparison.

pub fn key( &self, painter_id: PainterId, font_context: &FontContext, ) -> FontInstanceKey

pub fn font_data_and_index(&self) -> Result<&FontDataAndIndex, FontDataError>

Return the data for this Font. Note that this is currently highly inefficient for system fonts and should not be used except in legacy canvas code.

impl Font

pub fn shape_text( &self, text: &str, options: &ShapingOptions, ) -> Arc<GlyphStore>

pub fn can_do_fast_shaping(&self, text: &str, options: &ShapingOptions) -> bool

Whether not a particular text and ShapingOptions combination can use “fast shaping” ie shaping without Harfbuzz.

Note: This will eventually be removed.

pub fn glyph_index(&self, codepoint: char) -> Option<u32>

pub fn glyph_h_advance(&self, glyph_id: u32) -> f64

pub fn typographic_bounds(&self, glyph_id: u32) -> Rect<f32>

pub fn baseline(&self) -> Option<FontBaseline>

Get the FontBaseline for this font.

Trait Implementations

impl Debug for Font

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl MallocSizeOf for Font

fn size_of(&self, ops: &mut MallocSizeOfOps) -> usize

Measure the heap usage of all descendant heap-allocated structures, but not the space taken up by the value itself.