Struct ttf_parser::hmtx::Table

pub struct Table<'a> {
    pub metrics: LazyArray16<'a, Metrics>,
    pub bearings: LazyArray16<'a, i16>,
    pub number_of_metrics: u16,
}

A Horizontal/Vertical Metrics Table.

hmtx and vmtx tables has the same structure, so we’re reusing the same struct for both.

Fields

metrics: LazyArray16<'a, Metrics>

A list of metrics indexed by glyph ID.

bearings: LazyArray16<'a, i16>

Side bearings for glyph IDs greater than or equal to the number of metrics values.

number_of_metrics: u16

Sum of long metrics + bearings.

Implementations

impl<'a> Table<'a>

pub fn parse(
    number_of_metrics: u16,
    number_of_glyphs: NonZeroU16,
    data: &'a [u8]
) -> Option<Self>

Parses a table from raw data.

• number_of_metrics is from the hhea/vhea table.
• number_of_glyphs is from the maxp table.

pub fn advance(&self, glyph_id: GlyphId) -> Option<u16>

Returns advance for a glyph.

pub fn side_bearing(&self, glyph_id: GlyphId) -> Option<i16>

Returns side bearing for a glyph.

Trait Implementations

impl<'a> Clone for Table<'a>

fn clone(&self) -> Table<'a>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<'a> Debug for Table<'a>

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

Formats the value using the given formatter.

impl<'a> Copy for Table<'a>