Enum gtk4::PropagationPhase[][src]

#[non_exhaustive]
pub enum PropagationPhase {
    None,
    Capture,
    Bubble,
    Target,
    // some variants omitted
}
Expand description

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

Variants (Non-exhaustive)

This enum is marked as 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

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Value type checker.

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Compares and returns the maximum of two values. Read more

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Restrict a value to a certain interval. Read more

This method tests for self and other values to be equal, and is used by ==. Read more

This method tests for !=.

This method returns an ordering between self and other values if one exists. Read more

This method tests less than (for self and other) and is used by the < operator. Read more

This method tests less than or equal to (for self and other) and is used by the <= operator. Read more

This method tests greater than (for self and other) and is used by the > operator. Read more

This method tests greater than or equal to (for self and other) and is used by the >= operator. Read more

Returns the type identifier of Self.

Convert a value to a Value.

Returns the type identifer of self. Read more

Type to get the Type from. Read more

Auto Trait Implementations

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Performs the conversion.

Performs the conversion.

The resulting type after obtaining ownership.

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

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The type returned in the event of a conversion error.

Performs the conversion.

The type returned in the event of a conversion error.

Performs the conversion.