Recognizes movement in the vertical direction.
Used for vertical scrolling.
See also:
- Inheritance
- Object
- GestureArenaMember
- GestureRecognizer
- OneSequenceGestureRecognizer
- DragGestureRecognizer
- VerticalDragGestureRecognizer
Constructors
Properties
- hashCode → int
-
Get a hash code for this object.
read-only, inherited - onCancel → GestureDragCancelCallback
-
The pointer that previously triggered onDown did not complete.
read / write, inherited - onDown → GestureDragDownCallback
-
A pointer has contacted the screen and might begin to move.
read / write, inherited - onEnd → GestureDragEndCallback
-
A pointer that was previously in contact with the screen and moving is no longer in contact with the screen and was moving at a specific velocity when it stopped contacting the screen.
read / write, inherited - onStart → GestureDragStartCallback
-
A pointer has contacted the screen and has begun to move.
read / write, inherited - onUpdate → GestureDragUpdateCallback
-
A pointer that is in contact with the screen and moving has moved again.
read / write, inherited - runtimeType → Type
-
A representation of the runtime type of the object.
read-only, inherited
Operators
-
operator ==(
other) → bool -
The equality operator.
inherited
Methods
-
toStringShort(
) → String -
Returns a very short pretty description of the gesture that the recognizer looks for, like 'tap' or 'horizontal drag'.
-
acceptGesture(
int pointer) → void -
Called when this member wins the arena for the given pointer id.
inherited -
addPointer(
PointerEvent event) → void -
Registers a new pointer that might be relevant to this gesture detector.
inherited -
didStopTrackingLastPointer(
int pointer) → void -
Called when the number of pointers this recognizer is tracking changes from one to zero.
inherited -
dispose(
) → void -
Releases any resources used by the object.
inherited -
handleEvent(
PointerEvent event) → void -
Called when a pointer event is routed to this recognizer.
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 -
rejectGesture(
int pointer) → void -
Called when this member loses the arena for the given pointer id.
inherited -
resolve(
GestureDisposition disposition) → void -
Resolves this recognizer's participation in each gesture arena with the given disposition.
inherited -
startTrackingPointer(
int pointer) → void -
Causes events related to the given pointer ID to be routed to this recognizer.
inherited -
stopTrackingIfPointerNoLongerDown(
PointerEvent event) → void -
Stops tracking the pointer associated with the given event if the event is a PointerUpEvent or a PointerCancelEvent event.
inherited -
stopTrackingPointer(
int pointer) → void -
Stops events related to the given pointer ID from being routed to this recognizer.
inherited -
toString(
) → String -
Returns a string representation of this object.
inherited