Struct EdgeSwipeBack 

pub struct EdgeSwipeBack { /* private fields */ }

Arms when a press starts within edge_width of the left edge, fires NavAction::Back once the pointer travels trigger_distance px right in a mostly-horizontal drag. No velocity/animation, but a complete pointer-event contract a richer recognizer can later drop into.

Implementations

impl EdgeSwipeBack

pub fn new(edge_width: f64, trigger_distance: f64) -> EdgeSwipeBack

A recognizer for a left-edge back swipe. edge_width is how far from the left edge a press must start to arm; trigger_distance is the rightward travel that fires Back.

pub fn default_back() -> EdgeSwipeBack

A sensible default: arm within 24px of the left edge, fire after 80px of rightward travel.

pub fn pointer_down(&mut self, p: Point)

A pointer press landed at p (logical coords, relative to the surface’s left edge). Arms the recognizer when the press is inside the edge zone.

pub fn pointer_move(&mut self, p: Point) -> Option<NavAction>

The pointer moved to p. Returns NavAction::Back exactly once, on the frame the horizontal travel first exceeds the trigger distance while the gesture stays predominantly horizontal. None otherwise.

pub fn pointer_up(&mut self)

The pointer was released / capture ended — disarm for the next gesture.

pub fn is_armed(&self) -> bool

Whether a swipe is currently armed (a press started in the edge zone and has not yet fired or been released).

Trait Implementations

impl Clone for EdgeSwipeBack

fn clone(&self) -> EdgeSwipeBack

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for EdgeSwipeBack

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

Formats the value using the given formatter.

impl Default for EdgeSwipeBack

fn default() -> EdgeSwipeBack

Returns the “default value” for a type.