Enum DispatchPolicy 

#[repr(u32)]
pub enum DispatchPolicy {
    ExclusiveTarget = 1,
    TopHitAndAncestorsInTarget = 2,
    MouseHoverAndLatchInTarget = 3,
}

A specification of the UI clients that may have injected events dispatched to them in an |Target|. One is specified in |Config|.

A useful concept is “latching”, where one or more clients may start receiving the pointer event stream, prior to assignment of stream ownership. After ownership is assigned (e.g., through a gesture disambiguation protocol), non-owning clients have their latch terminated – they stop receiving the pointer event stream.

• A client’s latch does not itself confer stream ownership (receiving the entire pointer event stream); gesture disambiguation or device termination may prematurely end the stream dispatched to that client.
• It’s possible for a client to latch while hidden from the user (i.e., manipulate a surface that is invisible to the user), where the occluding surface is owned by a client outside of |Target|. Conversely, these occluding clients cannot latch, because latched clients must be in |Target|’s view tree.

Variants

ExclusiveTarget = 1

TopHitAndAncestorsInTarget = 2

MouseHoverAndLatchInTarget = 3

Trait Implementations

impl Clone for DispatchPolicy

fn clone(&self) -> DispatchPolicy

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for DispatchPolicy

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

Formats the value using the given formatter.

impl<'a, ___E> Encode<DispatchPolicy, ___E> for &'a DispatchPolicy

where ___E: ?Sized,

fn encode( self, encoder: &mut ___E, out: &mut MaybeUninit<DispatchPolicy>, _: (), ) -> Result<(), EncodeError>

Encodes this value into an encoder and output.

const COPY_OPTIMIZATION: CopyOptimization<Self, W> = _

Whether the conversion from Self to W is equivalent to copying the raw bytes of Self.

impl<___E> Encode<DispatchPolicy, ___E> for DispatchPolicy

where ___E: ?Sized,

fn encode( self, encoder: &mut ___E, out: &mut MaybeUninit<DispatchPolicy>, _: (), ) -> Result<(), EncodeError>

Encodes this value into an encoder and output.

const COPY_OPTIMIZATION: CopyOptimization<Self, W> = _

Whether the conversion from Self to W is equivalent to copying the raw bytes of Self.

impl From<DispatchPolicy> for DispatchPolicy

fn from(wire: DispatchPolicy) -> Self

Converts to this type from the input type.

impl From<DispatchPolicy> for DispatchPolicy

fn from(natural: DispatchPolicy) -> Self

Converts to this type from the input type.

impl FromWire<DispatchPolicy> for DispatchPolicy

fn from_wire(wire: DispatchPolicy) -> Self

Converts the given owned value to this type.

const COPY_OPTIMIZATION: CopyOptimization<W, Self> = _

Whether the conversion from W to Self is equivalent to copying the raw bytes of W.

impl FromWireRef<DispatchPolicy> for DispatchPolicy

fn from_wire_ref(wire: &DispatchPolicy) -> Self

Converts the given reference to this type.

impl Hash for DispatchPolicy

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 DispatchPolicy

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

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

fn partial_cmp(&self, other: &DispatchPolicy) -> 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 TryFrom<u32> for DispatchPolicy

type Error = UnknownStrictEnumMemberError

The type returned in the event of a conversion error.

fn try_from(value: u32) -> Result<Self, UnknownStrictEnumMemberError>

Performs the conversion.

impl Copy for DispatchPolicy

impl Eq for DispatchPolicy

impl StructuralPartialEq for DispatchPolicy