Struct ScaleF32 

pub struct ScaleF32 {
    x: f32,
    y: f32,
    ppem: f32,
}

Scales font units to f32 pixels.

Nothing here rounds, so a measurement carrying a fraction keeps it, which Scale26Dot6 does not.

Fields

x: f32

y: f32

ppem: f32

Implementations

impl ScaleF32

pub fn new(x_ppem: f32, y_ppem: f32, units_per_em: u16) -> Self

Creates a scale with a separate size for each axis.

pub fn from_ppem(ppem: f32, units_per_em: u16) -> Self

Creates a scale that maps units_per_em font units to ppem pixels.

Trait Implementations

impl Clone for ScaleF32

fn clone(&self) -> ScaleF32

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for ScaleF32

impl Debug for ScaleF32

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

Formats the value using the given formatter.

impl Scale for ScaleF32

type Value = f32

What a scaled measurement is expressed as.

fn add(a: f32, b: f32) -> f32

Returns a plus b.

fn sub(a: f32, b: f32) -> f32

Returns a less b.

fn half(value: f32) -> f32

Returns half of value.

fn scale_x(&self, value: F48Dot16) -> f32

Scales a measurement along the x axis.

fn scale_y(&self, value: F48Dot16) -> f32

Scales a measurement along the y axis.

fn scale_glyph_extents(&self, e: GlyphExtents<F48Dot16>) -> GlyphExtents<f32>

Scales where a glyph’s ink sits.

fn scale_rect(&self, b: BoundingBox<F48Dot16>) -> BoundingBox<f32>

Scales a region given by its corners.

fn ppem(&self) -> Option<f32>

Returns the size in pixels per em, if the scale has one.