Struct Vhea 

pub struct Vhea {
    pub version: Version16Dot16,
    pub ascender: FWord,
    pub descender: FWord,
    pub line_gap: FWord,
    pub advance_height_max: UfWord,
    pub min_top_side_bearing: FWord,
    pub min_bottom_side_bearing: FWord,
    pub y_max_extent: FWord,
    pub caret_slope_rise: i16,
    pub caret_slope_run: i16,
    pub caret_offset: i16,
    pub number_of_long_ver_metrics: u16,
}

Available on crate feature tables only.

The vhea Vertical Header Table

Fields

version: Version16Dot16

The major/minor version (1, 0 or 1, 1)

ascender: FWord

Typographic ascent.

descender: FWord

Typographic descent.

line_gap: FWord

Typographic line gap. Negative LineGap values are treated as zero in some legacy platform implementations.

advance_height_max: UfWord

Maximum advance height value in ‘vmtx’ table.

min_top_side_bearing: FWord

Minimum top sidebearing value in ‘vmtx’ table for glyphs with contours (empty glyphs should be ignored).

min_bottom_side_bearing: FWord

Minimum bottom sidebearing value

y_max_extent: FWord

Defined as max( tsb + (yMax-yMin)).

caret_slope_rise: i16

Used to calculate the slope of the cursor (rise/run); 1 for vertical caret, 0 for horizontal.

caret_slope_run: i16

0 for vertical caret, 1 for horizontal.

caret_offset: i16

The amount by which a slanted highlight on a glyph needs to be shifted to produce the best appearance. Set to 0 for non-slanted fonts

number_of_long_ver_metrics: u16

Number of advance heights in the vertical metrics (vmtx) table.

Implementations

impl Vhea

pub fn new( ascender: FWord, descender: FWord, line_gap: FWord, advance_height_max: UfWord, min_top_side_bearing: FWord, min_bottom_side_bearing: FWord, y_max_extent: FWord, caret_slope_rise: i16, caret_slope_run: i16, caret_offset: i16, number_of_long_ver_metrics: u16, ) -> Self

Construct a new Vhea

Trait Implementations

impl Clone for Vhea

fn clone(&self) -> Vhea

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Vhea

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

Formats the value using the given formatter.

impl Default for Vhea

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for Vhea

Available on crate feature serde only.

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for Vhea

impl<'a> FontRead<'a> for Vhea

fn read_with_args(data: FontData<'a>, _: ()) -> Result<Self, ReadError>

Read an item, performing validation.

fn read(data: FontData<'a>) -> Result<Self, ReadError>

where Self: FontRead<'a, Args = ()>,

Read an instance of Self from the provided data, performing validation.

impl FontWrite for Vhea

fn write_into(&self, writer: &mut TableWriter)

Write our data and information about offsets into this TableWriter.

fn table_type(&self) -> TableType

The type of this table.

impl<'a> FromObjRef<Vhea<'a>> for Vhea

fn from_obj_ref(obj: &Vhea<'a>, _: FontData<'_>) -> Self

Convert from to an instance of Self, using the provided data to resolve offsets.

impl<'a> FromTableRef<Vhea<'a>> for Vhea

fn from_table_ref(from: &T) -> Self

impl Hash for Vhea

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for Vhea

fn cmp(&self, other: &Vhea) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for Vhea

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

Equality operator ==.

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

Inequality operator !=.

impl PartialOrd for Vhea

fn partial_cmp(&self, other: &Vhea) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl ReadArgs for Vhea

type Args = ()

impl Serialize for Vhea

Available on crate feature serde only.

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for Vhea

impl TopLevelTable for Vhea

const TAG: Tag

The table’s tag.

impl Validate for Vhea

fn validate_impl(&self, _ctx: &mut ValidationCtx)

Validate this table.

fn validate(&self) -> Result<(), ValidationReport>

Ensure that this table is well-formed, reporting any errors.