Struct RecognizerContext 

pub struct RecognizerContext<'a> {
    pub now: EventTime,
    pub profile: GestureProfile,
    pub local_bounds: Rect,
    pub pointer: PointerInfo,
    pub streak: &'a TapStreak,
}

Everything a GestureRecognizer is allowed to know beyond the event in front of it.

Rebuilt per dispatch rather than stored, so a theme change, a density change or a different pointer kind is picked up without touching a single recognizer.

Fields

now: EventTime

Now, on the tree’s input timeline. Never Instant::now() — see EventTime.

profile: GestureProfile

The thresholds for this pointer’s kind. A recognizer reads its slop and its timings from here unless the call site set an explicit override.

local_bounds: Rect

The owning node’s bounds in its own coordinate space (origin at zero), for a recognizer that needs to know whether the pointer is still inside the target it pressed.

pointer: PointerInfo

Which pointer produced the event being processed.

streak: &'a TapStreak

The owning node’s tap streak. Read-only here: it is advanced by the GestureArenaSet that owns it, once per qualifying release, before the recognizers see the event.

Implementations

impl<'a> RecognizerContext<'a>

pub fn new( now: EventTime, profile: GestureProfile, local_bounds: Rect, pointer: PointerInfo, ) -> RecognizerContext<'static>

A context with no streak behind it — for a recognizer driven directly rather than through an arena set.

pub fn with_streak<'b>(&self, streak: &'b TapStreak) -> RecognizerContext<'b>

The same context reading streak instead. Used by GestureArenaSet to splice its own streak in without the caller having to own one.

pub fn for_event(event: &RawPointerEvent) -> RecognizerContext<'static>

The context a single mouse event implies, with the shipped mouse profile and no bounds. What GestureArena::process builds for a caller that supplies no node.

Trait Implementations

impl<'a> Clone for RecognizerContext<'a>

fn clone(&self) -> RecognizerContext<'a>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'a> Copy for RecognizerContext<'a>

impl<'a> Debug for RecognizerContext<'a>

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

Formats the value using the given formatter.