Struct input::event::gesture::GesturePinchUpdateEvent

pub struct GesturePinchUpdateEvent { /* fields omitted */ }

In-progress pinch gesture updated

Methods

impl GesturePinchUpdateEvent

fn angle_delta(&self) -> f64

Return the angle delta in degrees between the last and the current GesturePinchUpdateEvent.

The angle delta is defined as the change in angle of the line formed by the 2 fingers of a pinch gesture. Clockwise rotation is represented by a positive delta, counter-clockwise by a negative delta. If e.g. the fingers are on the 12 and 6 location of a clock face plate and they move to the 1 resp. 7 location in a single event then the angle delta is 30 degrees.

If more than two fingers are present, the angle represents the rotation around the center of gravity. The calculation of the center of gravity is implementation-dependent.

Trait Implementations

impl Eq for GesturePinchUpdateEvent

impl Debug for GesturePinchUpdateEvent

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

Formats the value using the given formatter.

impl FromRaw<libinput_event_gesture> for GesturePinchUpdateEvent

unsafe fn from_raw(ffi: *mut libinput_event_gesture) -> Self

Create a new instance of this type from a raw pointer.

impl AsRaw<libinput_event_gesture> for GesturePinchUpdateEvent

fn as_raw(&self) -> *const libinput_event_gesture

Receive a raw pointer representing this type.

impl PartialEq for GesturePinchUpdateEvent

fn eq(&self, other: &Self) -> 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 !=.

impl Hash for GesturePinchUpdateEvent

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, 

Feeds a slice of this type into the given [Hasher].

impl EventTrait for GesturePinchUpdateEvent

fn into_event(self) -> Event where
    Self: Sized, 

Convert into a general Event again

fn context(&self) -> Libinput

Get the libinput context from the event.

fn device(&self) -> Device

Return the device associated with this event.

impl Drop for GesturePinchUpdateEvent

fn drop(&mut self)

A method called when the value goes out of scope.

impl GesturePinchEventTrait for GesturePinchUpdateEvent

fn scale(&self) -> f64

Return the absolute scale of a pinch gesture, the scale is the division of the current distance between the fingers and the distance at the start of the gesture.

fn into_gesture_pinch_event(self) -> GesturePinchEvent where
    Self: Sized, 

Convert into a general GesturePinchEvent

impl GestureEventCoordinates for GesturePinchUpdateEvent

fn dx(&self) -> f64

Return the delta between the last event and the current event.

fn dx_unaccelerated(&self) -> f64

Return the relative delta of the unaccelerated motion vector of the current event.

fn dy(&self) -> f64

Return the delta between the last event and the current event.

fn dy_unaccelerated(&self) -> f64

Return the relative delta of the unaccelerated motion vector of the current event.