Struct Scale 

pub(crate) struct Scale {
    x_mult: i64,
    y_mult: i64,
    x_multf: f32,
    y_multf: f32,
}

Fields

x_mult: i64

y_mult: i64

x_multf: f32

y_multf: f32

Implementations

impl Scale

pub(crate) fn new(scale: Option<(i32, i32)>, upem: i32) -> Self

pub(crate) fn scale_x(&self, x: i32) -> i32

pub(crate) fn scale_y(&self, y: i32) -> i32

pub(crate) fn scale_x_f(&self, x: f32) -> i32

Scales a fractional (font-unit) value, matching HarfBuzz’s em_scalef (roundf(v * scale / upem)).

pub(crate) fn scale_y_f(&self, y: f32) -> i32

pub(crate) fn scale_extents(&self, extents: GlyphExtents) -> GlyphExtents

Scales glyph extents using HarfBuzz’s corner-based float arithmetic: floor the origin corners and ceil the far corners before deriving the final width/height. hb_font_t::scale_glyph_extents: https://github.com/harfbuzz/harfbuzz/blob/88adc6437ef561486a5adf1822410297ef4a852b/src/hb-font.hh#L201’

fn mult_from_scale(scale: i32, upem: i32) -> i64

fn scale_by_mult(value: i32, mult: i64) -> i32

Trait Implementations

impl Clone for Scale

fn clone(&self) -> Scale

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Default for Scale

fn default() -> Self

Returns the “default value” for a type.

impl Copy for Scale