Struct Tracker 

pub struct Tracker { /* private fields */ }

Available on crate feature tappable only.

The gesture logic of a tappable, free of any widget, so it can be driven and tested directly.

Implementations

impl Tracker

pub fn press(&mut self, pointer: Pointer, position: Point, now: Instant)

A press started at position. A second finger while one is down cancels instead, since two fingers are a pinch rather than a tap.

pub fn moved(&mut self, pointer: Pointer, position: Point, slop: f32)

The pointer moved. Beyond slop from where it started, the press is cancelled.

pub fn release(&mut self, pointer: Pointer, inside: bool) -> Option<Gesture>

The pointer was lifted. A press that was not held and ends inside is a tap.

pub fn lost(&mut self, pointer: Pointer)

The pointer went away without a release.

pub fn tick(&mut self, now: Instant, hold: Duration) -> Option<Gesture>

Checks the clock. Once a press has been held for hold, it becomes a long press, reported once, and its release is then ignored.

pub fn deadline(&self, hold: Duration) -> Option<Instant>

When the current press becomes a long press, if one is pending.

pub fn mouse_moved(&mut self)

A real mouse moved, so hover can be shown again.

pub fn is_pressed(&self) -> bool

pub fn status(&self, cursor_over: bool) -> Status

The status to draw, given whether the cursor is over the bounds. A touch leaves the cursor where the finger was, so hover is ignored after a touch until the mouse moves.

Trait Implementations

impl Clone for Tracker

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 Tracker

impl Debug for Tracker

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

Formats the value using the given formatter.

impl Default for Tracker

fn default() -> Self

Returns the “default value” for a type.

impl PartialEq for Tracker

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Tracker