DelayedMultiDragGestureRecognizer class

Recognizes movement both horizontally and vertically on a per-pointer basis after a delay.

In contrast to ImmediateMultiDragGestureRecognizer, DelayedMultiDragGestureRecognizer waits for a delay before recognizing the drag. If the pointer moves more than kTouchSlop before the delay expires, the gesture is not recognized.

In contrast to PanGestureRecognizer, DelayedMultiDragGestureRecognizer watches each pointer separately, which means multiple drags can be recognized concurrently if multiple pointers are in contact with the screen.

See also:

Inheritance

Constructors

DelayedMultiDragGestureRecognizer({Duration delay: kLongPressTimeout, Object debugOwner })
Creates a drag recognizer that works on a per-pointer basis after a delay. [...]

Properties

debugDescription String
Returns a very short pretty description of the gesture that the recognizer looks for, like 'tap' or 'horizontal drag'.
read-only
delay Duration
The amount of time the pointer must remain in the same place for the drag to be recognized.
final
debugOwner Object
The recognizer's owner. [...]
final, inherited
hashCode int
The hash code for this object. [...]
read-only, inherited
onStart GestureMultiDragStartCallback
Called when this class recognizes the start of a drag gesture. [...]
read / write, inherited
runtimeType Type
A representation of the runtime type of the object.
read-only, inherited

Methods

createNewPointerState(PointerDownEvent event) → _DelayedPointerState
Subclasses should override this method to create per-pointer state objects to track the pointer associated with the given event.
acceptGesture(int pointer) → void
Called when this member wins the arena for the given pointer id.
inherited
addPointer(PointerDownEvent event) → void
Registers a new pointer that might be relevant to this gesture detector. [...]
inherited
debugDescribeChildren() List<DiagnosticsNode>
Returns a list of DiagnosticsNode objects describing this node's children. [...]
inherited
debugFillProperties(DiagnosticPropertiesBuilder description) → void
inherited
dispose() → void
Releases any resources used by the object. [...]
inherited
invokeCallback<T>(String name, RecognizerCallback<T> callback, { String debugReport() }) → T
Invoke a callback provided by the application, catching and logging any exceptions. [...]
@protected, 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
toDiagnosticsNode({String name, DiagnosticsTreeStyle style }) DiagnosticsNode
inherited
toString({DiagnosticLevel minLevel: DiagnosticLevel.debug }) String
Returns a string representation of this object.
inherited
toStringDeep({String prefixLineOne: '', String prefixOtherLines, DiagnosticLevel minLevel: DiagnosticLevel.debug }) String
Returns a string representation of this node and its descendants. [...]
inherited
toStringShallow({String joiner: ', ', DiagnosticLevel minLevel: DiagnosticLevel.debug }) String
Returns a one-line detailed description of the object. [...]
inherited
toStringShort() String
inherited

Operators

operator ==(other) bool
The equality operator. [...]
inherited