Struct TransformGesture 

pub struct TransformGesture { /* private fields */ }

Tracks active pointers and recognizes pinch/pan transform steps.

Implementations

impl TransformGesture

pub fn new() -> Self

pub fn pointer_count(&self) -> usize

Number of pointers currently tracked.

pub fn centroid(&self) -> Option<Point>

Centroid of the currently tracked pointers, if any.

pub fn handle_event(&mut self, event: &PointerEvent) -> TransformGestureEvent

Feeds one pointer event; returns the recognized transform step.

pub fn reset(&mut self)

Forgets all tracked pointers.

Trait Implementations

impl Clone for TransformGesture

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TransformGesture

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

Formats the value using the given formatter.

impl Default for TransformGesture

fn default() -> Self

Returns the “default value” for a type.