Struct kas_text::fonts::FaceRef

pub struct FaceRef(_);

Handle to a loaded font face

Implementations

impl FaceRef

pub fn glyph_index(&self, c: char) -> GlyphId

Get glyph identifier for a char

If the char is not found, GlyphId(0) is returned (the ‘missing glyph’ representation).

pub fn dpu(self, dpem: f32) -> DPU

Convert dpem to dpu

Output: a font-specific scale.

Input: dpem is pixels/em

dpem
  = pt_size × dpp
  = pt_size × dpi / 72
  = pt_size × scale_factor × (96 / 72)

pub fn scale_by_dpem(self, dpem: f32) -> ScaledFaceRef

Get a scaled reference

Units: dpem is dots (pixels) per Em (module documentation).

pub fn scale_by_dpu(self, dpu: DPU) -> ScaledFaceRef

Get a scaled reference

Units: dpu is dots (pixels) per font-unit (see module documentation).

pub fn height(&self, dpem: f32) -> f32

Get the height of horizontal text in pixels

Units: dpem is dots (pixels) per Em (module documentation).

Trait Implementations

impl Clone for FaceRef

fn clone(&self) -> FaceRef

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for FaceRef

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

Formats the value using the given formatter.

impl Copy for FaceRef