Struct DragScroller 

pub struct DragScroller { /* private fields */ }

Thresholded, single-axis pointer panning shared by virtual collections. A press remains a click until it moves four logical pixels; once active, offset and release velocity are derived from the same pointer samples.

Implementations

impl DragScroller

pub fn new() -> DragScroller

pub fn begin(&mut self, axis: f64, offset: f64, now: Instant)

pub fn update(&mut self, axis: f64, now: Instant) -> Option<DragScrollUpdate>

pub fn finish(&mut self, now: Instant) -> Option<DragScrollFinish>

pub fn cancel(&mut self) -> bool

pub fn is_tracking(&self) -> bool

pub fn is_active(&self) -> bool

Trait Implementations

impl Clone for DragScroller

fn clone(&self) -> DragScroller

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for DragScroller

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

Formats the value using the given formatter.

impl Default for DragScroller

fn default() -> DragScroller

Returns the “default value” for a type.