Struct read_fonts::tables::variations::TupleVariationCount

pub struct TupleVariationCount(/* private fields */);

The ‘tupleVariationCount’ field of the Tuple Variation Store Header

The high 4 bits are flags, and the low 12 bits are the number of tuple variation tables for this glyph. The count can be any number between 1 and 4095.

Implementations

impl TupleVariationCount

pub const SHARED_POINT_NUMBERS: u16 = 32_768u16

Flag indicating that some or all tuple variation tables reference a shared set of “point” numbers.

These shared numbers are represented as packed point number data at the start of the serialized data.

pub const COUNT_MASK: u16 = 4_095u16

Mask for the low 12 bits to give the shared tuple records index.

pub fn bits(self) -> u16

pub fn from_bits(bits: u16) -> Self

pub fn shared_point_numbers(self) -> bool

true if any tables reference a shared set of point numbers

pub fn count(self) -> u16

Trait Implementations

impl Clone for TupleVariationCount

fn clone(&self) -> TupleVariationCount

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for TupleVariationCount

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

Formats the value using the given formatter.

impl Default for TupleVariationCount

fn default() -> TupleVariationCount

Returns the “default value” for a type.

impl Hash for TupleVariationCount

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 TupleVariationCount

fn cmp(&self, other: &TupleVariationCount) -> 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 + PartialOrd,

Restrict a value to a certain interval.

impl PartialEq for TupleVariationCount

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

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

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

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for TupleVariationCount

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

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

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

This method tests less than (for self and other) and is used by the < operator.

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

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

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

This method tests greater than (for self and other) and is used by the > operator.

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

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

impl Scalar for TupleVariationCount

type Raw = <u16 as Scalar>::Raw

The raw byte representation of this type.

fn to_raw(self) -> Self::Raw

Encode this type as raw big-endian bytes

fn from_raw(raw: Self::Raw) -> Self

Create an instance of this type from raw big-endian bytes

fn read(slice: &[u8]) -> Option<Self>

Attempt to read a scalar from a slice.

impl Copy for TupleVariationCount

impl Eq for TupleVariationCount

impl StructuralPartialEq for TupleVariationCount