Struct ScrollBounceMotion 

pub struct ScrollBounceMotion { /* private fields */ }

Motion tokens for ScrollBounce: how far a drag stretches the viewport past an edge, and how quickly a released edge returns.

Base plays the stretch and the return; the feel belongs to the caller. The default is tuned to feel like a UIScrollView bounce.

Implementations

impl ScrollBounceMotion

pub fn with_tracking(self, tracking: f32) -> Self

Fraction of finger travel the stretched edge follows at first.

The edge follows less and less as it approaches the viewport height, which it never reaches. Tracking is independent of the return, so slowing the return does not change how the finger feels.

Panics

Panics when tracking is not finite or not positive.

pub fn with_response(self, response: Duration) -> Self

Time scale of the return once the finger lifts.

Read the way crate::Spring::new reads its response: the period one full oscillation would take without damping, which is the scale the return is felt at rather than the moment it stops. The return is critically damped, so it never crosses the edge. A zero response snaps the edge back on the spot.

pub fn tracking(&self) -> f32

Fraction of finger travel the stretched edge follows at first.

pub fn response(&self) -> Duration

Time scale of the return once the finger lifts.

Trait Implementations

impl Clone for ScrollBounceMotion

fn clone(&self) -> ScrollBounceMotion

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for ScrollBounceMotion

impl Debug for ScrollBounceMotion

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

Formats the value using the given formatter.

impl Default for ScrollBounceMotion

fn default() -> Self

Tuned to feel like a UIScrollView bounce; these are not UIKit constants.

impl PartialEq for ScrollBounceMotion

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for ScrollBounceMotion