Base class for gesture recognizers that can only recognize one gesture at a time. For example, a single TapGestureRecognizer can never recognize two taps happening simultaneously, even if multiple pointers are placed on the same widget.
This is in contrast to, for instance, MultiTapGestureRecognizer, which manages each pointer independently and can consider multiple simultaneous touches to each result in a separate tap.
- Inheritance
- Object
- GestureArenaMember
- GestureRecognizer
- OneSequenceGestureRecognizer
- Implemented by
Constructors
Properties
- hashCode → int
-
Get a hash code for this object.
read-only, inherited - runtimeType → Type
-
A representation of the runtime type of the object.
read-only, inherited
Operators
-
operator ==(
other) → bool -
The equality operator.
inherited
Methods
-
acceptGesture(
int pointer) → void -
Called when this member wins the arena for the given pointer id.
-
didStopTrackingLastPointer(
int pointer) → void -
Called when the number of pointers this recognizer is tracking changes from one to zero.
-
dispose(
) → void -
Releases any resources used by the object.
-
handleEvent(
PointerEvent event) → void -
Called when a pointer event is routed to this recognizer.
-
rejectGesture(
int pointer) → void -
Called when this member loses the arena for the given pointer id.
-
resolve(
GestureDisposition disposition) → void -
Resolves this recognizer's participation in each gesture arena with the given disposition.
-
startTrackingPointer(
int pointer) → void -
Causes events related to the given pointer ID to be routed to this recognizer.
-
stopTrackingIfPointerNoLongerDown(
PointerEvent event) → void -
Stops tracking the pointer associated with the given event if the event is a PointerUpEvent or a PointerCancelEvent event.
-
stopTrackingPointer(
int pointer) → void -
Stops events related to the given pointer ID from being routed to this recognizer.
-
addPointer(
PointerDownEvent event) → void -
Registers a new pointer that might be relevant to this gesture detector.
inherited -
invokeCallback(
String name, RecognizerCallback callback) → dynamic -
Invoke a callback provided by the application and log any exceptions.
inherited -
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a non-existent method or property is accessed.
inherited -
toString(
) → String -
Returns a string representation of this object.
inherited -
toStringShort(
) → String -
Returns a very short pretty description of the gesture that the recognizer looks for, like 'tap' or 'horizontal drag'.
inherited