Enum gdk4::TouchpadGesturePhase[][src]

#[non_exhaustive]
pub enum TouchpadGesturePhase {
    Begin,
    Update,
    End,
    Cancel,
    // some variants omitted
}
Expand description

Specifies the current state of a touchpad gesture.

All gestures are guaranteed to begin with an event with phase Begin, followed by 0 or several events with phase Update.

A finished gesture may have 2 possible outcomes, an event with phase End will be emitted when the gesture is considered successful, this should be used as the hint to perform any permanent changes.

Cancelled gestures may be so for a variety of reasons, due to hardware or the compositor, or due to the gesture recognition layers hinting the gesture did not finish resolutely (eg. a 3rd finger being added during a pinch gesture). In these cases, the last event will report the phase Cancel, this should be used as a hint to undo any visible/permanent changes that were done throughout the progress of the gesture.

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.

Begin

The gesture has begun.

Update

The gesture has been updated.

End

The gesture was finished, changes should be permanently applied.

Cancel

The gesture was cancelled, all changes should be undone.

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