PrimaryPointerGestureRecognizer constructor Null safety
- {Duration? deadline,
- double? preAcceptSlopTolerance = kTouchSlop,
- double? postAcceptSlopTolerance = kTouchSlop,
- Object? debugOwner,
- @Deprecated('Migrate to supportedDevices. ' 'This feature was deprecated after v2.3.0-1.0.pre.') PointerDeviceKind? kind,
- Set<
PointerDeviceKind> ? supportedDevices}
Initializes the deadline field during construction of subclasses.
It's possible to limit this recognizer to a specific set of PointerDeviceKinds
by providing the optional supportedDevices
argument. If supportedDevices
is null,
the recognizer will accept pointer events from all device kinds.
Implementation
PrimaryPointerGestureRecognizer({
this.deadline,
this.preAcceptSlopTolerance = kTouchSlop,
this.postAcceptSlopTolerance = kTouchSlop,
super.debugOwner,
@Deprecated(
'Migrate to supportedDevices. '
'This feature was deprecated after v2.3.0-1.0.pre.',
)
super.kind,
super.supportedDevices,
}) : assert(
preAcceptSlopTolerance == null || preAcceptSlopTolerance >= 0,
'The preAcceptSlopTolerance must be positive or null',
),
assert(
postAcceptSlopTolerance == null || postAcceptSlopTolerance >= 0,
'The postAcceptSlopTolerance must be positive or null',
);