Struct Modifiers

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

Declares all the modifiers supported by Fuchsia’s input subsystem.

Modifiers are special keys that modify the purpose or the function of other keys when used in combination with them. In the Modifiers type, a bit is set if the specific modifier key is actuated (held down), irrespective of whether the modifier has an associated lock state or not.

NOTE: If you want to examine the lock state (such as whether Caps Lock needs to turn all letters into uppercase),you want LockState instead.

Somewhat specially, and as a convenience for the users, the modifiers that have “left” and “right” flavors have special bit values which can be used if the distinction between sides does not matter.

Implementations

impl Modifiers

pub const CAPS_LOCK: Modifiers

Applies when the CAPS_LOCK modifier is actuated.

pub const NUM_LOCK: Modifiers

Applies when the NUM_LOCK modifier is actuated.

pub const SCROLL_LOCK: Modifiers

Applies when the SCROLL_LOCK modifier is actuated.

pub const FUNCTION: Modifiers

Applies when the FUNCTION modifier is actuated.

pub const SYMBOL: Modifiers

Applies when the SYMBOL modifier is actuated.

pub const LEFT_SHIFT: Modifiers

Applies when the left SHIFT modifier is actuated.

pub const RIGHT_SHIFT: Modifiers

Applies when the right SHIFT modifier is actuated.

pub const SHIFT: Modifiers

Applies when either LEFT_SHIFT or RIGHT_SHIFT modifier is actuated.

This bit mask a convenience to test for either LEFT_SHIFT or RIGHT_SHIFT.

pub const LEFT_ALT: Modifiers

Applies when the left ALT modifier is actuated.

pub const RIGHT_ALT: Modifiers

Applies when the right ALT modifier is actuated.

pub const ALT: Modifiers

Applies when either the left ALT or the right ALT modifier is actuated.

pub const ALT_GRAPH: Modifiers

Applies when the ALT_GRAPH modifier is actuated.

pub const LEFT_META: Modifiers

Applies when the LEFT_META modifier is actuated.

pub const RIGHT_META: Modifiers

Applies when the RIGHT_META modifier is actuated.

pub const META: Modifiers

Applies when either LEFT_META or RIGHT_META modifier is actuated.

pub const LEFT_CTRL: Modifiers

Applies when the LEFT_CTRL modifier is actuated.

pub const RIGHT_CTRL: Modifiers

Applies when the RIGHT_CTRL modifier is actuated.

pub const CTRL: Modifiers

Applies when either LEFT_CTRL or RIGHT_CTRL modifier is actuated.

impl Modifiers

pub const fn empty() -> Modifiers

Get a flags value with all bits unset.

pub const fn all() -> Modifiers

Get a flags value with all known bits set.

pub const fn bits(&self) -> u64

Get the underlying bits value.

The returned value is exactly the bits set in this flags value.

pub const fn from_bits(bits: u64) -> Option<Modifiers>

Convert from a bits value.

This method will return None if any unknown bits are set.

pub const fn from_bits_truncate(bits: u64) -> Modifiers

Convert from a bits value, unsetting any unknown bits.

pub const fn from_bits_retain(bits: u64) -> Modifiers

Convert from a bits value exactly.

pub fn from_name(name: &str) -> Option<Modifiers>

Get a flags value with the bits of a flag with the given name set.

This method will return None if name is empty or doesn’t correspond to any named flag.

pub const fn is_empty(&self) -> bool

Whether all bits in this flags value are unset.

pub const fn is_all(&self) -> bool

Whether all known bits in this flags value are set.

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

Whether any set bits in a source flags value are also set in a target flags value.

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

Whether all set bits in a source flags value are also set in a target flags value.

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

The bitwise or (|) of the bits in two flags values.

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

The intersection of a source flags value with the complement of a target flags value (&!).

This method is not equivalent to self & !other when other has unknown bits set. remove won’t truncate other, but the ! operator will.

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

The bitwise exclusive-or (^) of the bits in two flags values.

pub fn set(&mut self, other: Modifiers, value: bool)

Call insert when value is true or remove when value is false.

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

The bitwise and (&) of the bits in two flags values.

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

The bitwise or (|) of the bits in two flags values.

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

The intersection of a source flags value with the complement of a target flags value (&!).

This method is not equivalent to self & !other when other has unknown bits set. difference won’t truncate other, but the ! operator will.

pub const fn symmetric_difference(self, other: Modifiers) -> Modifiers

The bitwise exclusive-or (^) of the bits in two flags values.

pub const fn complement(self) -> Modifiers

The bitwise negation (!) of the bits in a flags value, truncating the result.

impl Modifiers

pub const fn iter(&self) -> Iter<Modifiers>

Yield a set of contained flags values.

Each yielded flags value will correspond to a defined named flag. Any unknown bits will be yielded together as a final flags value.

pub const fn iter_names(&self) -> IterNames<Modifiers>

Yield a set of contained named flags values.

This method is like iter, except only yields bits in contained named flags. Any unknown bits, or bits not corresponding to a contained flag will not be yielded.

impl Modifiers

pub fn from_bits_allow_unknown(bits: u64) -> Modifiers

pub fn has_unknown_bits(&self) -> bool

pub fn get_unknown_bits(&self) -> u64

Trait Implementations

impl Binary for Modifiers

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

Formats the value using the given formatter.

impl BitAnd for Modifiers

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

The bitwise and (&) of the bits in two flags values.

type Output = Modifiers

The resulting type after applying the & operator.

impl BitAndAssign for Modifiers

fn bitand_assign(&mut self, other: Modifiers)

The bitwise and (&) of the bits in two flags values.

impl BitOr for Modifiers

fn bitor(self, other: Modifiers) -> Modifiers

The bitwise or (|) of the bits in two flags values.

type Output = Modifiers

The resulting type after applying the | operator.

impl BitOrAssign for Modifiers

fn bitor_assign(&mut self, other: Modifiers)

The bitwise or (|) of the bits in two flags values.

impl BitXor for Modifiers

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

The bitwise exclusive-or (^) of the bits in two flags values.

type Output = Modifiers

The resulting type after applying the ^ operator.

impl BitXorAssign for Modifiers

fn bitxor_assign(&mut self, other: Modifiers)

The bitwise exclusive-or (^) of the bits in two flags values.

impl Clone for Modifiers

fn clone(&self) -> Modifiers

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Modifiers

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

Formats the value using the given formatter.

impl<D> Decode<Modifiers, D> for Modifiers

where D: ResourceDialect,

fn new_empty() -> Modifiers

Creates a valid instance of Self. The specific value does not matter, since it will be overwritten by decode.

unsafe fn decode( &mut self, decoder: &mut Decoder<'_, D>, offset: usize, _depth: Depth, ) -> Result<(), Error>

Decodes an object of type T from the decoder’s buffers into self.

impl Default for Modifiers

fn default() -> Modifiers

Returns the “default value” for a type.

impl<D> Encode<Modifiers, D> for Modifiers

where D: ResourceDialect,

unsafe fn encode( self, encoder: &mut Encoder<'_, D>, offset: usize, _depth: Depth, ) -> Result<(), Error>

Encodes the object into the encoder’s buffers. Any handles stored in the object are swapped for Handle::INVALID.

impl Extend<Modifiers> for Modifiers

fn extend<T>(&mut self, iterator: T)

where T: IntoIterator<Item = Modifiers>,

The bitwise or (|) of the bits in each flags value.

fn extend_one(&mut self, item: A)

🔬This is a nightly-only experimental API. (extend_one)

Extends a collection with exactly one element.

fn extend_reserve(&mut self, additional: usize)

🔬This is a nightly-only experimental API. (extend_one)

Reserves capacity in a collection for the given number of additional elements.

impl Flags for Modifiers

const FLAGS: &'static [Flag<Modifiers>]

The set of defined flags.

type Bits = u64

The underlying bits type.

fn bits(&self) -> u64

Get the underlying bits value.

fn from_bits_retain(bits: u64) -> Modifiers

Convert from a bits value exactly.

fn empty() -> Self

Get a flags value with all bits unset.

fn all() -> Self

Get a flags value with all known bits set.

fn contains_unknown_bits(&self) -> bool

This method will return true if any unknown bits are set.

fn from_bits(bits: Self::Bits) -> Option<Self>

Convert from a bits value.

fn from_bits_truncate(bits: Self::Bits) -> Self

Convert from a bits value, unsetting any unknown bits.

fn from_name(name: &str) -> Option<Self>

Get a flags value with the bits of a flag with the given name set.

fn iter(&self) -> Iter<Self>

Yield a set of contained flags values.

fn iter_names(&self) -> IterNames<Self>

Yield a set of contained named flags values.

fn is_empty(&self) -> bool

Whether all bits in this flags value are unset.

fn is_all(&self) -> bool

Whether all known bits in this flags value are set.

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

where Self: Sized,

Whether any set bits in a source flags value are also set in a target flags value.

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

where Self: Sized,

Whether all set bits in a source flags value are also set in a target flags value.

fn truncate(&mut self)

where Self: Sized,

Remove any unknown bits from the flags.

fn insert(&mut self, other: Self)

where Self: Sized,

The bitwise or (|) of the bits in two flags values.

fn remove(&mut self, other: Self)

where Self: Sized,

The intersection of a source flags value with the complement of a target flags value (&!).

fn toggle(&mut self, other: Self)

where Self: Sized,

The bitwise exclusive-or (^) of the bits in two flags values.

fn set(&mut self, other: Self, value: bool)

where Self: Sized,

Call [Flags::insert] when value is true or [Flags::remove] when value is false.

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

The bitwise and (&) of the bits in two flags values.

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

The bitwise or (|) of the bits in two flags values.

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

The intersection of a source flags value with the complement of a target flags value (&!).

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

The bitwise exclusive-or (^) of the bits in two flags values.

fn complement(self) -> Self

The bitwise negation (!) of the bits in a flags value, truncating the result.

impl FromIterator<Modifiers> for Modifiers

fn from_iter<T>(iterator: T) -> Modifiers

where T: IntoIterator<Item = Modifiers>,

The bitwise or (|) of the bits in each flags value.

impl Hash for Modifiers

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

where __H: Hasher,

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 IntoIterator for Modifiers

type Item = Modifiers

The type of the elements being iterated over.

type IntoIter = Iter<Modifiers>

Which kind of iterator are we turning this into?

fn into_iter(self) -> <Modifiers as IntoIterator>::IntoIter

Creates an iterator from a value.

impl LowerHex for Modifiers

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

Formats the value using the given formatter.

impl Not for Modifiers

fn not(self) -> Modifiers

The bitwise negation (!) of the bits in a flags value, truncating the result.

type Output = Modifiers

The resulting type after applying the ! operator.

impl Octal for Modifiers

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

Formats the value using the given formatter.

impl Ord for Modifiers

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

fn eq(&self, other: &Modifiers) -> 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 Modifiers

fn partial_cmp(&self, other: &Modifiers) -> 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 Sub for Modifiers

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

The intersection of a source flags value with the complement of a target flags value (&!).

This method is not equivalent to self & !other when other has unknown bits set. difference won’t truncate other, but the ! operator will.

type Output = Modifiers

The resulting type after applying the - operator.

impl SubAssign for Modifiers

fn sub_assign(&mut self, other: Modifiers)

The intersection of a source flags value with the complement of a target flags value (&!).

This method is not equivalent to self & !other when other has unknown bits set. difference won’t truncate other, but the ! operator will.

impl TypeMarker for Modifiers

type Owned = Modifiers

The owned Rust type which this FIDL type decodes into.

fn inline_align(_context: Context) -> usize

Returns the minimum required alignment of the inline portion of the encoded object. It must be a (nonzero) power of two.

fn inline_size(_context: Context) -> usize

Returns the size of the inline portion of the encoded object, including padding for alignment. Must be a multiple of inline_align.

fn encode_is_copy() -> bool

Returns true if the memory layout of Self::Owned matches the FIDL wire format and encoding requires no validation. When true, we can optimize encoding arrays and vectors of Self::Owned to a single memcpy.

fn decode_is_copy() -> bool

Returns true if the memory layout of Self::Owned matches the FIDL wire format and decoding requires no validation. When true, we can optimize decoding arrays and vectors of Self::Owned to a single memcpy.

impl UpperHex for Modifiers

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

Formats the value using the given formatter.

impl ValueTypeMarker for Modifiers

type Borrowed<'a> = Modifiers

The Rust type to use for encoding. This is a particular Encode<Self> type cheaply obtainable from &Self::Owned. There are three cases:

fn borrow( value: &<Modifiers as TypeMarker>::Owned, ) -> <Modifiers as ValueTypeMarker>::Borrowed<'_>

Cheaply converts from &Self::Owned to Self::Borrowed.

impl Copy for Modifiers

impl Eq for Modifiers

impl StructuralPartialEq for Modifiers