Struct read_fonts::tables::glyf::SimpleGlyphFlags

pub struct SimpleGlyphFlags { /* private fields */ }

Flags used in SimpleGlyph

Implementations

impl SimpleGlyphFlags

pub const ON_CURVE_POINT: Self = _

Bit 0: If set, the point is on the curve; otherwise, it is off the curve.

pub const X_SHORT_VECTOR: Self = _

Bit 1: If set, the corresponding x-coordinate is 1 byte long, and the sign is determined by the X_IS_SAME_OR_POSITIVE_X_SHORT_VECTOR flag. If not set, its interpretation depends on the X_IS_SAME_OR_POSITIVE_X_SHORT_VECTOR flag: If that other flag is set, the x-coordinate is the same as the previous x-coordinate, and no element is added to the xCoordinates array. If both flags are not set, the corresponding element in the xCoordinates array is two bytes and interpreted as a signed integer. See the description of the X_IS_SAME_OR_POSITIVE_X_SHORT_VECTOR flag for additional information.

pub const Y_SHORT_VECTOR: Self = _

Bit 2: If set, the corresponding y-coordinate is 1 byte long, and the sign is determined by the Y_IS_SAME_OR_POSITIVE_Y_SHORT_VECTOR flag. If not set, its interpretation depends on the Y_IS_SAME_OR_POSITIVE_Y_SHORT_VECTOR flag: If that other flag is set, the y-coordinate is the same as the previous y-coordinate, and no element is added to the yCoordinates array. If both flags are not set, the corresponding element in the yCoordinates array is two bytes and interpreted as a signed integer. See the description of the Y_IS_SAME_OR_POSITIVE_Y_SHORT_VECTOR flag for additional information.

pub const REPEAT_FLAG: Self = _

Bit 3: If set, the next byte (read as unsigned) specifies the number of additional times this flag byte is to be repeated in the logical flags array — that is, the number of additional logical flag entries inserted after this entry. (In the expanded logical array, this bit is ignored.) In this way, the number of flags listed can be smaller than the number of points in the glyph description.

pub const X_IS_SAME_OR_POSITIVE_X_SHORT_VECTOR: Self = _

Bit 4: This flag has two meanings, depending on how the X_SHORT_VECTOR flag is set. If X_SHORT_VECTOR is set, this bit describes the sign of the value, with 1 equalling positive and 0 negative. If X_SHORT_VECTOR is not set and this bit is set, then the current x-coordinate is the same as the previous x-coordinate. If X_SHORT_VECTOR is not set and this bit is also not set, the current x-coordinate is a signed 16-bit delta vector.

pub const Y_IS_SAME_OR_POSITIVE_Y_SHORT_VECTOR: Self = _

Bit 5: This flag has two meanings, depending on how the Y_SHORT_VECTOR flag is set. If Y_SHORT_VECTOR is set, this bit describes the sign of the value, with 1 equalling positive and 0 negative. If Y_SHORT_VECTOR is not set and this bit is set, then the current y-coordinate is the same as the previous y-coordinate. If Y_SHORT_VECTOR is not set and this bit is also not set, the current y-coordinate is a signed 16-bit delta vector.

pub const OVERLAP_SIMPLE: Self = _

Bit 6: If set, contours in the glyph description may overlap. Use of this flag is not required in OpenType — that is, it is valid to have contours overlap without having this flag set. It may affect behaviors in some platforms, however. (See the discussion of “Overlapping contours” in Apple’s specification for details regarding behavior in Apple platforms.) When used, it must be set on the first flag byte for the glyph. See additional details below.

pub const CUBIC: Self = _

Bit 7: Off-curve point belongs to a cubic-Bezier segment

• Spec
• harfbuzz

impl SimpleGlyphFlags

pub const fn empty() -> Self

Returns an empty set of flags.

pub const fn all() -> Self

Returns the set containing all flags.

pub const fn bits(&self) -> u8

Returns the raw value of the flags currently stored.

pub const fn from_bits(bits: u8) -> Option<Self>

Convert from underlying bit representation, unless that representation contains bits that do not correspond to a flag.

pub const fn from_bits_truncate(bits: u8) -> Self

Convert from underlying bit representation, dropping any bits that do not correspond to flags.

pub const fn is_empty(&self) -> bool

Returns true if no flags are currently stored.

pub const fn intersects(&self, other: Self) -> bool

Returns true if there are flags common to both self and other.

pub const fn contains(&self, other: Self) -> bool

Returns true if all of the flags in other are contained within self.

pub fn insert(&mut self, other: Self)

Inserts the specified flags in-place.

pub fn remove(&mut self, other: Self)

Removes the specified flags in-place.

pub fn toggle(&mut self, other: Self)

Toggles the specified flags in-place.

pub const fn intersection(self, other: Self) -> Self

Returns the intersection between the flags in self and other.

Specifically, the returned set contains only the flags which are present in both self and other.

This is equivalent to using the & operator (e.g. ops::BitAnd), as in flags & other.

pub const fn union(self, other: Self) -> Self

Returns the union of between the flags in self and other.

Specifically, the returned set contains all flags which are present in either self or other, including any which are present in both.

This is equivalent to using the | operator (e.g. ops::BitOr), as in flags | other.

pub const fn difference(self, other: Self) -> Self

Returns the difference between the flags in self and other.

Specifically, the returned set contains all flags present in self, except for the ones present in other.

It is also conceptually equivalent to the “bit-clear” operation: flags & !other (and this syntax is also supported).

This is equivalent to using the - operator (e.g. ops::Sub), as in flags - other.

Trait Implementations

impl Binary for SimpleGlyphFlags

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

Formats the value using the given formatter.

impl BitAnd for SimpleGlyphFlags

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

Returns the intersection between the two sets of flags.

type Output = SimpleGlyphFlags

The resulting type after applying the & operator.

impl BitAndAssign for SimpleGlyphFlags

fn bitand_assign(&mut self, other: Self)

Disables all flags disabled in the set.

impl BitOr for SimpleGlyphFlags

fn bitor(self, other: SimpleGlyphFlags) -> Self

Returns the union of the two sets of flags.

type Output = SimpleGlyphFlags

The resulting type after applying the | operator.

impl BitOrAssign for SimpleGlyphFlags

fn bitor_assign(&mut self, other: Self)

Adds the set of flags.

impl BitXor for SimpleGlyphFlags

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

Returns the left flags, but with all the right flags toggled.

type Output = SimpleGlyphFlags

The resulting type after applying the ^ operator.

impl BitXorAssign for SimpleGlyphFlags

fn bitxor_assign(&mut self, other: Self)

Toggles the set of flags.

impl Clone for SimpleGlyphFlags

fn clone(&self) -> SimpleGlyphFlags

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for SimpleGlyphFlags

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

Formats the value using the given formatter.

impl Default for SimpleGlyphFlags

fn default() -> SimpleGlyphFlags

Returns the “default value” for a type.

impl<'a> From<SimpleGlyphFlags> for FieldType<'a>

fn from(src: SimpleGlyphFlags) -> FieldType<'a>

Converts to this type from the input type.

impl Hash for SimpleGlyphFlags

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 LowerHex for SimpleGlyphFlags

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

Formats the value using the given formatter.

impl Not for SimpleGlyphFlags

fn not(self) -> Self

Returns the complement of this set of flags.

type Output = SimpleGlyphFlags

The resulting type after applying the ! operator.

impl Octal for SimpleGlyphFlags

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

Formats the value using the given formatter.

impl Ord for SimpleGlyphFlags

fn cmp(&self, other: &SimpleGlyphFlags) -> 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 SimpleGlyphFlags

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

Tests for self and other values to be equal, and is used by ==.

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

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

impl PartialOrd for SimpleGlyphFlags

fn partial_cmp(&self, other: &SimpleGlyphFlags) -> 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 Scalar for SimpleGlyphFlags

type Raw = <u8 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 Sub for SimpleGlyphFlags

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

Returns the set difference of the two sets of flags.

type Output = SimpleGlyphFlags

The resulting type after applying the - operator.

impl SubAssign for SimpleGlyphFlags

fn sub_assign(&mut self, other: Self)

Disables all flags enabled in the set.

impl UpperHex for SimpleGlyphFlags

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

Formats the value using the given formatter.

impl Zeroable for SimpleGlyphFlags

fn zeroed() -> Self

Calls zeroed.

impl AnyBitPattern for SimpleGlyphFlags

impl Copy for SimpleGlyphFlags

impl Eq for SimpleGlyphFlags

impl StructuralPartialEq for SimpleGlyphFlags