Struct gtk4::GestureSwipe

#[repr(transparent)]
pub struct GestureSwipe { /* private fields */ }

GestureSwipe is a Gesture for swipe gestures.

After a press/move/…/move/release sequence happens, the signal::GestureSwipe::swipe signal will be emitted, providing the velocity and directionality of the sequence at the time it was lifted.

If the velocity is desired in intermediate points, velocity() can be called in a signal::Gesture::update handler.

All velocities are reported in pixels/sec units.

Implements

GestureSingleExt, GestureExt, EventControllerExt, glib::ObjectExt

Implementations

impl GestureSwipe

pub fn new() -> GestureSwipe

Returns a newly created Gesture that recognizes swipes.

Returns

a newly created GestureSwipe

pub fn builder() -> GestureSwipeBuilder

Creates a new builder-pattern struct instance to construct GestureSwipe objects.

This method returns an instance of GestureSwipeBuilder which can be used to create GestureSwipe objects.

pub fn velocity(&self) -> Option<(f64, f64)>

Gets the current velocity.

If the gesture is recognized, this function returns true and fills in @velocity_x and @velocity_y with the recorded velocity, as per the last events processed.

Returns

whether velocity could be calculated

velocity_x

return value for the velocity in the X axis, in pixels/sec

velocity_y

return value for the velocity in the Y axis, in pixels/sec

pub fn connect_swipe<F: Fn(&Self, f64, f64) + 'static>( &self, f: F ) -> SignalHandlerId

Emitted when the recognized gesture is finished.

Velocity and direction are a product of previously recorded events.

velocity_x

velocity in the X axis, in pixels/sec

velocity_y

velocity in the Y axis, in pixels/sec

Trait Implementations

impl Clone for GestureSwipe

fn clone(&self) -> Self

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for GestureSwipe

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

Formats the value using the given formatter.

impl Default for GestureSwipe

fn default() -> Self

Returns the “default value” for a type.

impl Display for GestureSwipe

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

Formats the value using the given formatter.

impl Hash for GestureSwipe

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 Ord for GestureSwipe

fn cmp(&self, other: &Self) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Selfwhere Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Selfwhere Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Selfwhere Self: Sized + PartialOrd<Self>,

Restrict a value to a certain interval.

impl ParentClassIs for GestureSwipe

type Parent = GestureSingle

impl<OT: ObjectType> PartialEq<OT> for GestureSwipe

fn eq(&self, other: &OT) -> 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<OT: ObjectType> PartialOrd<OT> for GestureSwipe

fn partial_cmp(&self, other: &OT) -> 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 GestureSwipe

fn static_type() -> Type

Returns the type identifier of Self.

impl Eq for GestureSwipe

impl IsA<EventController> for GestureSwipe

impl IsA<Gesture> for GestureSwipe

impl IsA<GestureSingle> for GestureSwipe