ForcePressGestureRecognizer constructor Null safety
- {double startPressure = 0.4,
- double peakPressure = 0.85,
- GestureForceInterpolation interpolation = _inverseLerp,
- Object? debugOwner,
- @Deprecated('Migrate to supportedDevices. ' 'This feature was deprecated after v2.3.0-1.0.pre.') PointerDeviceKind? kind,
- Set<
PointerDeviceKind> ? supportedDevices}
Creates a force press gesture recognizer.
The startPressure defaults to 0.4, and peakPressure defaults to 0.85 where a value of 0.0 is no pressure and a value of 1.0 is maximum pressure.
The startPressure, peakPressure and interpolation arguments must not
be null. The peakPressure argument must be greater than startPressure.
The interpolation callback must always return a value in the range 0.0
to 1.0 for values of pressure
that are between pressureMin
and
pressureMax
.
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
ForcePressGestureRecognizer({
this.startPressure = 0.4,
this.peakPressure = 0.85,
this.interpolation = _inverseLerp,
super.debugOwner,
@Deprecated(
'Migrate to supportedDevices. '
'This feature was deprecated after v2.3.0-1.0.pre.',
)
super.kind,
super.supportedDevices,
}) : assert(startPressure != null),
assert(peakPressure != null),
assert(interpolation != null),
assert(peakPressure > startPressure);