Struct MomentumScrolling 

pub struct MomentumScrolling { /* private fields */ }

The state of scrolling: where it began, and the velocity of the inertia that follows it.

Implementations

impl MomentumScrolling

pub fn begin(&mut self, location: Point)

Scrolling began at a location, which the events keep until the inertia stops.

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

The location scrolling began at.

pub fn start_inertia(&mut self, velocity: Point)

Scrolling ended at a velocity (points per second): inertia starts.

pub fn stop(&mut self)

Forgets the velocity and the location.

pub fn update(&mut self) -> Option<(Point, Vector)>

A frame of inertia: the location and the delta of the wheel event to send, or nothing when the inertia is over (the state is then stopped).

Trait Implementations

impl Clone for MomentumScrolling

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for MomentumScrolling

impl Debug for MomentumScrolling

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

Formats the value using the given formatter.

impl Default for MomentumScrolling

fn default() -> Self

Returns the “default value” for a type.

impl PartialEq for MomentumScrolling

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for MomentumScrolling