Struct harfbuzz_rs::Font

#[repr(C)]
pub struct Font<'a> { /* fields omitted */ }

A font is the most important concept in harfbuzz.

A font can be created either as a subfont of an existing font or directly from a Face using its create_font function.

Methods

impl<'a> Font<'a>

pub fn new<T: Into<Shared<Face<'a>>>>(face: T) -> Owned<Self>

Create a new font with a specified Face.

pub fn create_sub_font<T: Into<Shared<Font<'a>>>>(font: T) -> Owned<Font<'a>>

Create a new sub font from the current font that by default inherits its parent font's face, scale, ppem and font funcs.

pub fn parent(&self) -> &Font<'a>

Returns the parent font.

pub fn face(&self) -> &Face<'a>

Returns the face which was used to create the font.

pub fn scale(&self) -> (i32, i32)

pub fn set_scale(&mut self, x: i32, y: i32)

pub fn ppem(&self) -> (u32, u32)

pub fn set_ppem(&mut self, x: u32, y: u32)

pub fn set_font_funcs<FuncsType>(&mut self, funcs: FuncsType) where
    FuncsType: 'a + Send + Sync + FontFuncs, 

pub fn get_font_h_extents(&self) -> Option<FontExtents>

pub fn get_font_v_extents(&self) -> Option<FontExtents>

pub fn get_nominal_glyph(&self, c: char) -> Option<Glyph>

pub fn get_variation_glyph(&self, c: char, v: char) -> Option<Glyph>

pub fn get_glyph_h_advance(&self, glyph: Glyph) -> Position

pub fn get_glyph_v_advance(&self, glyph: Glyph) -> Position

pub fn get_glyph_h_origin(&self, glyph: Glyph) -> Option<(Position, Position)>

pub fn get_glyph_v_origin(&self, glyph: Glyph) -> Option<(Position, Position)>

pub fn get_glyph_h_kerning(&self, left: Glyph, right: Glyph) -> Position

pub fn get_glyph_v_kerning(&self, before: Glyph, after: Glyph) -> Position

pub fn get_glyph_extents(&self, glyph: Glyph) -> Option<GlyphExtents>

pub fn get_glyph_contour_point(
    &self,
    glyph: Glyph,
    point_index: u32
) -> Option<(Position, Position)>

pub fn get_glyph_name(&self, glyph: Glyph) -> Option<String>

pub fn get_glyph_from_name(&self, name: &str) -> Option<Glyph>

Trait Implementations

impl<'a> Debug for Font<'a>

fn fmt(&self, __arg_0: &mut Formatter) -> Result

Formats the value using the given formatter.

impl<'a> HarfbuzzObject for Font<'a>

type Raw = hb_font_t

Type of the raw harfbuzz object.

unsafe fn reference(&self)

Increases the reference count of the HarfBuzz object.

unsafe fn dereference(&self)

Decreases the reference count of the HarfBuzz object and destroys it if the reference count reaches zero.

Important traits for &'a mut W

impl<'a, W> Write for &'a mut W where
    W: Write + ?Sized, impl<'a, R> Read for &'a mut R where
    R: Read + ?Sized, impl<'a, I> Iterator for &'a mut I where
    I: Iterator + ?Sized,  type Item = <I as Iterator>::Item;

unsafe fn from_raw<'a>(val: *const Self::Raw) -> &'a Self

Creates a reference from a harfbuzz object pointer.

Important traits for &'a mut W

impl<'a, W> Write for &'a mut W where
    W: Write + ?Sized, impl<'a, R> Read for &'a mut R where
    R: Read + ?Sized, impl<'a, I> Iterator for &'a mut I where
    I: Iterator + ?Sized,  type Item = <I as Iterator>::Item;

unsafe fn from_raw_mut<'a>(val: *mut Self::Raw) -> &'a mut Self

Creates a mutable reference from a harfbuzz object pointer.

fn as_raw(&self) -> *mut Self::Raw

Returns the underlying harfbuzz object pointer.

impl<'a> SetRustTypeFuncs for Font<'a>

fn set_rusttype_funcs(&mut self) -> Result<(), Error>

Let a font use rusttype's font API for getting information like the advance width of some glyph or its extents.