Struct Metrics

pub struct Metrics {

    pub units_per_em: u16,
    pub glyph_count: u16,
    pub is_monospace: bool,
    pub has_vertical_metrics: bool,
    pub ascent: f32,
    pub descent: f32,
    pub leading: f32,
    pub vertical_ascent: f32,
    pub vertical_descent: f32,
    pub vertical_leading: f32,
    pub cap_height: f32,
    pub x_height: f32,
    pub average_width: f32,
    pub max_width: f32,
    pub underline_offset: f32,
    pub strikeout_offset: f32,
    pub stroke_size: f32,
}

Global font metrics.

Fields

units_per_em: u16

Number of font design units per em unit.

glyph_count: u16

Number of glyphs in the font.

is_monospace: bool

True if the font is monospace.

has_vertical_metrics: bool

True if the font provides canonical vertical metrics.

ascent: f32

Distance from the baseline to the top of the alignment box.

descent: f32

Distance from the baseline to the bottom of the alignment box.

leading: f32

Recommended additional spacing between lines.

vertical_ascent: f32

Distance from the vertical center baseline to the right edge of the design space.

vertical_descent: f32

Distance from the vertical center baseline to the left edge of the design space.

vertical_leading: f32

Recommended additional spacing between columns.

cap_height: f32

Distance from the baseline to the top of a typical English capital.

x_height: f32

Distance from the baseline to the top of the lowercase “x” or similar character.

average_width: f32

Average width of all non-zero characters in the font.

max_width: f32

Maximum advance width of all characters in the font.

underline_offset: f32

Recommended distance from the baseline to the top of an underline stroke.

strikeout_offset: f32

Recommended distance from the baseline to the top of a strikeout stroke.

stroke_size: f32

Recommended thickness of an underline or strikeout stroke.

Implementations

impl Metrics

pub fn scale(&self, ppem: f32) -> Self

Creates a new set of metrics scaled for the specified pixels per em unit.

pub fn linear_scale(&self, s: f32) -> Self

Creates a new set of metrics scaled by the specified factor.

Trait Implementations

impl Clone for Metrics

fn clone(&self) -> Metrics

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Metrics

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

Formats the value using the given formatter.

impl Default for Metrics

fn default() -> Metrics

Returns the “default value” for a type.

impl Copy for Metrics