Enum gtk4::PropagationPhase

#[non_exhaustive]
pub enum PropagationPhase {
    None,
    Capture,
    Bubble,
    Target,
}

Describes the stage at which events are fed into a EventController.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

None

Events are not delivered.

Capture

Events are delivered in the capture phase. The capture phase happens before the bubble phase, runs from the toplevel down to the event widget. This option should only be used on containers that might possibly handle events before their children do.

Bubble

Events are delivered in the bubble phase. The bubble phase happens after the capture phase, and before the default handlers are run. This phase runs from the event widget, up to the toplevel.

Target

Events are delivered in the default widget event handlers, note that widget implementations must chain up on button, motion, touch and grab broken handlers for controllers in this phase to be run.

Trait Implementations

impl Clone for PropagationPhase

fn clone(&self) -> PropagationPhase

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for PropagationPhase

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

Formats the value using the given formatter.

impl From<PropagationPhase> for Value

fn from(v: PropagationPhase) -> Self

Converts to this type from the input type.

impl<'a> FromValue<'a> for PropagationPhase

type Checker = GenericValueTypeChecker<PropagationPhase>

Value type checker.

unsafe fn from_value(value: &'a Value) -> Self

Get the contained value from a Value.

impl HasParamSpec for PropagationPhase

type ParamSpec = ParamSpecEnum

type SetValue = PropagationPhase

Preferred value to be used as setter for the associated ParamSpec.

type BuilderFn = fn(_: &str, _: PropagationPhase) -> ParamSpecEnumBuilder<'_, PropagationPhase>

fn param_spec_builder() -> Self::BuilderFn

impl Hash for PropagationPhase

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 PropagationPhase

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

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

fn partial_cmp(&self, other: &PropagationPhase) -> 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 StaticType for PropagationPhase

fn static_type() -> Type

Returns the type identifier of Self.

impl ToValue for PropagationPhase

fn to_value(&self) -> Value

Convert a value to a Value.

fn value_type(&self) -> Type

Returns the type identifier of self.

impl ValueType for PropagationPhase

type Type = PropagationPhase

Type to get the Type from.

impl Copy for PropagationPhase

impl Eq for PropagationPhase

impl StructuralPartialEq for PropagationPhase