Enum font_kit::hinting::HintingOptions

pub enum HintingOptions {
    None,
    Vertical(f32),
    VerticalSubpixel(f32),
    Full(f32),
}

Specifies how hinting (grid fitting) is to be performed (or not performed) for a glyph.

This affects both outlines and rasterization.

Variants

None

No hinting is performed unless absolutely necessary to assemble the glyph.

This corresponds to what macOS and FreeType in its "no hinting" mode do.

Vertical(f32)

Hinting is performed only in the vertical direction. The specified point size is used for grid fitting.

This corresponds to what DirectWrite and FreeType in its light hinting mode do.

VerticalSubpixel(f32)

Hinting is performed only in the vertical direction, and further tweaks are applied to make subpixel antialiasing look better. The specified point size is used for grid fitting.

This matches DirectWrite, GDI in its ClearType mode, and FreeType in its LCD hinting mode.

Full(f32)

Hinting is performed in both horizontal and vertical directions. The specified point size is used for grid fitting.

This corresponds to what GDI in non-ClearType modes and FreeType in its normal hinting mode do.

Methods

impl HintingOptions

pub fn grid_fitting_size(&self) -> Option<f32>

Returns the point size that will be used for grid fitting, if any.

Trait Implementations

impl PartialEq<HintingOptions> for HintingOptions

fn eq(&self, other: &HintingOptions) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &HintingOptions) -> bool

This method tests for !=.

impl Copy for HintingOptions

impl Clone for HintingOptions

fn clone(&self) -> HintingOptions

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for HintingOptions

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

Formats the value using the given formatter.