# Struct Flags

    pub struct Flags { /* private fields */ }

Expand description

The `flags` field for the head table.

## Implementations§

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### impl Flags

#### pub const BASELINE_AT_Y_0: Flags

Bit 0: Baseline for font at y=0.

#### pub const LSB_AT_X_0: Flags

Bit 1: Left sidebearing point at x=0 (relevant only for TrueType rasterizers).

#### pub const INSTRUCTIONS_MAY_DEPEND_ON_POINT_SIZE: Flags

Bit 2: Instructions may depend on point size.

#### pub const FORCE_INTEGER_PPEM: Flags

Bit 3: Force ppem to integer values for all internal scaler math; may use fractional ppem sizes if this bit is clear. It is strongly recommended that this be set in hinted fonts.

#### pub const INSTRUCTIONS_MAY_ALTER_ADVANCE_WIDTH: Flags

Bit 4: Instructions may alter advance width (the advance widths might not scale linearly).

#### pub const LOSSLESS_TRANSFORMED_FONT_DATA: Flags

Bit 11: Font data is “lossless” as a result of having been subjected to optimizing transformation and/or compression (such as compression mechanisms defined by ISO/IEC 14496-18, MicroType® Express, WOFF 2.0, or similar) where the original font functionality and features are retained but the binary compatibility between input and output font files is not guaranteed. As a result of the applied transform, the DSIG table may also be invalidated.

#### pub const CONVERTED_FONT: Flags

Bit 12: Font converted (produce compatible metrics).

#### pub const OPTIMIZED_FOR_CLEARTYPE: Flags

Bit 13: Font optimized for ClearType. Note, fonts that rely on embedded bitmaps (EBDT) for rendering should not be considered optimized for ClearType, and therefore should keep this bit cleared.

#### pub const LAST_RESORT_FONT: Flags

Bit 14: Last Resort font. If set, indicates that the glyphs encoded in the ‘cmap’ subtables are simply generic symbolic representations of code point ranges and do not truly represent support for those code points. If unset, indicates that the glyphs encoded in the ‘cmap’ subtables represent proper support for those code points.

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### impl Flags

#### pub const fn empty() -> Flags

Returns an empty set of flags.

#### pub const fn all() -> Flags

Returns the set containing all flags.

#### pub const fn bits(&self) -> u16

Returns the raw value of the flags currently stored.

#### pub const fn from_bits(bits: u16) -> Option<Flags>

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

#### pub const fn from_bits_truncate(bits: u16) -> Flags

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: Flags) -> bool

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

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

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

#### pub fn insert(&mut self, other: Flags)

Inserts the specified flags in-place.

#### pub fn remove(&mut self, other: Flags)

Removes the specified flags in-place.

#### pub fn toggle(&mut self, other: Flags)

Toggles the specified flags in-place.

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

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: Flags) -> Flags

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: Flags) -> Flags

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§

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### impl Binary for Flags

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

Formats the value using the given formatter. Read more
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### impl BitAnd for Flags

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#### fn bitand(self, other: Flags) -> Flags

Returns the intersection between the two sets of flags.

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#### type Output = Flags

The resulting type after applying the `&` operator.
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### impl BitAndAssign for Flags

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#### fn bitand_assign(&mut self, other: Flags)

Disables all flags disabled in the set.

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### impl BitOr for Flags

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#### fn bitor(self, other: Flags) -> Flags

Returns the union of the two sets of flags.

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#### type Output = Flags

The resulting type after applying the `|` operator.
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### impl BitOrAssign for Flags

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#### fn bitor_assign(&mut self, other: Flags)

Adds the set of flags.

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### impl BitXor for Flags

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#### fn bitxor(self, other: Flags) -> Flags

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

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#### type Output = Flags

The resulting type after applying the `^` operator.
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### impl BitXorAssign for Flags

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#### fn bitxor_assign(&mut self, other: Flags)

Toggles the set of flags.

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### impl Clone for Flags

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#### fn clone(&self) -> Flags

Returns a duplicate of the value. Read more
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#### fn clone_from(&mut self, source: &Self)

Performs copy-assignment from `source`. Read more
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### impl Debug for Flags

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

Formats the value using the given formatter. Read more
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### impl Default for Flags

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#### fn default() -> Flags

Returns the “default value” for a type. Read more
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### impl Hash for Flags

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

Feeds this value into the given `Hasher`. Read more
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#### fn hash_slice<H>(data: &[Self], state: &mut H)
where H: Hasher, Self: Sized,

Feeds a slice of this type into the given `Hasher`. Read more
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### impl LowerHex for Flags

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

Formats the value using the given formatter. Read more
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### impl Not for Flags

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#### fn not(self) -> Flags

Returns the complement of this set of flags.

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#### type Output = Flags

The resulting type after applying the `!` operator.
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### impl Octal for Flags

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

Formats the value using the given formatter. Read more
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### impl Ord for Flags

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

This method returns an `Ordering` between `self` and `other`. Read more
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#### fn max(self, other: Self) -> Self
where Self: Sized,

Compares and returns the maximum of two values. Read more
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#### fn min(self, other: Self) -> Self
where Self: Sized,

Compares and returns the minimum of two values. Read more
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#### fn clamp(self, min: Self, max: Self) -> Self
where Self: Sized,

Restrict a value to a certain interval. Read more
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### impl PartialEq for Flags

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

Tests for `self` and `other` values to be equal, and is used by `==`.
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#### fn ne(&self, other: &Rhs) -> bool

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

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

This method returns an ordering between `self` and `other` values if one exists. Read more
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#### fn lt(&self, other: &Rhs) -> bool

Tests less than (for `self` and `other`) and is used by the `<` operator. Read more
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#### fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for `self` and `other`) and is used by the `<=` operator. Read more
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#### fn gt(&self, other: &Rhs) -> bool

Tests greater than (for `self` and `other`) and is used by the `>` operator. Read more
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#### fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for `self` and `other`) and is used by the `>=` operator. Read more
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### impl Scalar for Flags

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#### type Raw = <u16 as Scalar>::Raw

The raw byte representation of this type.
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#### fn to_raw(self) -> <Flags as Scalar>::Raw

Encode this type as raw big-endian bytes
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#### fn from_raw(raw: <Flags as Scalar>::Raw) -> Flags

Create an instance of this type from raw big-endian bytes
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#### fn read(slice: &[u8]) -> Option<Self>

Attempt to read a scalar from a slice. Read more
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### impl Sub for Flags

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#### fn sub(self, other: Flags) -> Flags

Returns the set difference of the two sets of flags.

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#### type Output = Flags

The resulting type after applying the `-` operator.
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### impl SubAssign for Flags

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#### fn sub_assign(&mut self, other: Flags)

Disables all flags enabled in the set.

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### impl UpperHex for Flags

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

Formats the value using the given formatter. Read more
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### impl Zeroable for Flags

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#### fn zeroed() -> Self

Calls `zeroed`. Read more
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### impl AnyBitPattern for Flags

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### impl Copy for Flags

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### impl Eq for Flags

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### impl StructuralPartialEq for Flags

## Auto Trait Implementations§

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### impl Freeze for Flags

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### impl RefUnwindSafe for Flags

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### impl Send for Flags

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### impl Sync for Flags

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### impl Unpin for Flags

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### impl UnwindSafe for Flags

## Blanket Implementations§

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### impl<S, D, Swp, Dwp, T> AdaptInto<D, Swp, Dwp, T> for S
where T: Real + Zero + Arithmetics + Clone, Swp: WhitePoint<T>, Dwp: WhitePoint<T>, D: AdaptFrom<S, Swp, Dwp, T>,

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#### fn adapt_into_using<M>(self, method: M) -> D
where M: TransformMatrix<T>,

Convert the source color to the destination color using the specified method.
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#### fn adapt_into(self) -> D

Convert the source color to the destination color using the bradford method by default.
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### impl<T> Also for T

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#### fn also<F>(self, block: F) -> Self
where F: FnOnce(&mut Self),

Apply a function to this value and return the (possibly) modified value.
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### impl<T> Any for T
where T: 'static + ?Sized,

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#### fn type_id(&self) -> TypeId

Gets the `TypeId` of `self`. Read more
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### impl<T> AnyEq for T
where T: Any + PartialEq,

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#### fn equals(&self, other: &(dyn Any + 'static)) -> bool

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#### fn as_any(&self) -> &(dyn Any + 'static)

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### impl<T, Res> Apply<Res> for T
where T: ?Sized,

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#### fn apply<F>(self, f: F) -> Res
where F: FnOnce(Self) -> Res, Self: Sized,

Apply a function which takes the parameter by value.
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#### fn apply_ref<F>(&self, f: F) -> Res
where F: FnOnce(&Self) -> Res,

Apply a function which takes the parameter by reference.
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#### fn apply_mut<F>(&mut self, f: F) -> Res
where F: FnOnce(&mut Self) -> Res,

Apply a function which takes the parameter by mutable reference.
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### impl<T, C> ArraysFrom<C> for T
where C: IntoArrays<T>,

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#### fn arrays_from(colors: C) -> T

Cast a collection of colors into a collection of arrays.
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### impl<T, C> ArraysInto<C> for T
where C: FromArrays<T>,

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#### fn arrays_into(self) -> C

Cast this collection of arrays into a collection of colors.
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#### fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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#### fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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### impl<WpParam, T, U> Cam16IntoUnclamped<WpParam, T> for U
where T: FromCam16Unclamped<WpParam, U>,

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#### type Scalar = <T as FromCam16Unclamped<WpParam, U>>::Scalar

The number type that’s used in `parameters` when converting.
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#### fn cam16_into_unclamped( self, parameters: BakedParameters<WpParam, <U as Cam16IntoUnclamped<WpParam, T>>::Scalar>, ) -> T

Converts `self` into `C`, using the provided parameters.
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### impl<T> CheckedBitPattern for T
where T: AnyBitPattern,

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#### type Bits = T

`Self` must have the same layout as the specified `Bits` except for the possible invalid bit patterns being checked during `is_valid_bit_pattern`.
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#### fn is_valid_bit_pattern(_bits: &T) -> bool

If this function returns true, then it must be valid to reinterpret `bits` as `&Self`.
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### impl<T> CloneToUninit for T
where T: Clone,

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#### unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (`clone_to_uninit`)
Performs copy-assignment from `self` to `dest`. Read more
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### impl<Q, K> Comparable<K> for Q
where Q: Ord + ?Sized, K: Borrow<Q> + ?Sized,

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#### fn compare(&self, key: &K) -> Ordering

Compare self to `key` and return their ordering.
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### impl<T, C> ComponentsFrom<C> for T
where C: IntoComponents<T>,

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#### fn components_from(colors: C) -> T

Cast a collection of colors into a collection of color components.
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where T: Any,

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#### fn into_any(self: Box<T>) -> Box<dyn Any>

Convert `Box<dyn Trait>` (where `Trait: Downcast`) to `Box<dyn Any>`. `Box<dyn Any>` can then be further `downcast` into `Box<ConcreteType>` where `ConcreteType` implements `Trait`.
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#### fn into_any_rc(self: Rc<T>) -> Rc<dyn Any>

Convert `Rc<Trait>` (where `Trait: Downcast`) to `Rc<Any>`. `Rc<Any>` can then be further `downcast` into `Rc<ConcreteType>` where `ConcreteType` implements `Trait`.
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#### fn as_any(&self) -> &(dyn Any + 'static)

Convert `&Trait` (where `Trait: Downcast`) to `&Any`. This is needed since Rust cannot generate `&Any`’s vtable from `&Trait`’s.
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#### fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)

Convert `&mut Trait` (where `Trait: Downcast`) to `&Any`. This is needed since Rust cannot generate `&mut Any`’s vtable from `&mut Trait`’s.
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#### fn equivalent(&self, key: &K) -> bool

Checks if this value is equivalent to the given key. Read more
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### impl<Q, K> Equivalent<K> for Q
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#### fn equivalent(&self, key: &K) -> bool

Checks if this value is equivalent to the given key. Read more
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### impl<Q, K> Equivalent<K> for Q
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#### fn equivalent(&self, key: &K) -> bool

Compare self to `key` and return `true` if they are equal.
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#### const RAW_BYTE_LEN: usize

The raw size of this type, in bytes. Read more
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Returns the argument unchanged.

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Performs a conversion from `angle`.
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#### fn from_stimulus(other: U) -> T

Converts `other` into `Self`, while performing the appropriate scaling, rounding and clamping.
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Instruments this type with the provided [`Span`], returning an `Instrumented` wrapper. Read more
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Calls `U::from(self)`.

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Performs a conversion into `T`.
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### impl<State, Message> IntoBoot<State, Message> for State

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#### fn into_boot(self) -> (State, Task<Message>)

Turns some type into the initial state of some `Application`.
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### impl<WpParam, T, U> IntoCam16Unclamped<WpParam, T> for U
where T: Cam16FromUnclamped<WpParam, U>,

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#### type Scalar = <T as Cam16FromUnclamped<WpParam, U>>::Scalar

The number type that’s used in `parameters` when converting.
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#### fn into_cam16_unclamped( self, parameters: BakedParameters<WpParam, <U as IntoCam16Unclamped<WpParam, T>>::Scalar>, ) -> T

Converts `self` into `C`, using the provided parameters.
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### impl<T, U> IntoColor<U> for T
where U: FromColor<T>,

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#### fn into_color(self) -> U

Convert into T with values clamped to the color defined bounds Read more
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### impl<T, U> IntoColorUnclamped<U> for T
where U: FromColorUnclamped<T>,

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#### fn into_color_unclamped(self) -> U

Convert into T. The resulting color might be invalid in its color space Read more
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#### fn into_stimulus(self) -> T

Converts `self` into `T`, while performing the appropriate scaling, rounding and clamping.
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#### type NoneType = T

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#### fn null_value() -> T

The none-equivalent value.
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#### type Output = T

Should always be `Self`
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#### type Owned = T

The resulting type after obtaining ownership.
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Creates owned data from borrowed data, usually by cloning. Read more
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Uses borrowed data to replace owned data, usually by cloning. Read more
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### impl<T, C> TryComponentsInto<C> for T
where C: TryFromComponents<T>,

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#### type Error = <C as TryFromComponents<T>>::Error

The error for when `try_into_colors` fails to cast.
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#### fn try_components_into(self) -> Result<C, <T as TryComponentsInto<C>>::Error>

Try to cast this collection of color components into a collection of colors. Read more
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#### type Error = Infallible

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Performs the conversion.
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#### type Error = <U as TryFrom<T>>::Error

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#### fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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### impl<T, U> TryIntoColor<U> for T
where U: TryFromColor<T>,

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#### fn try_into_color(self) -> Result<U, OutOfBounds<U>>

Convert into T, returning ok if the color is inside of its defined range, otherwise an `OutOfBounds` error is returned which contains the unclamped color. Read more
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### impl<C, U> UintsFrom<C> for U
where C: IntoUints<U>,

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#### fn uints_from(colors: C) -> U

Cast a collection of colors into a collection of unsigned integers.
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### impl<C, U> UintsInto<C> for U
where C: FromUints<U>,

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#### fn uints_into(self) -> C

Cast this collection of unsigned integers into a collection of colors.
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### impl<V, T> VZip<V> for T
where V: MultiLane<T>,

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#### fn vzip(self) -> V

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#### fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self> ⓘ
where S: Into<Dispatch>,

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Attaches the current default `Subscriber` to this type, returning a [`WithDispatch`] wrapper. Read more
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