DraggableItemRecognizer class

Inheritance

Constructors

DraggableItemRecognizer({@required DraggableContainerState<DraggableItem> containerState})

Properties

containerState DraggableContainerState<DraggableItem>
final
debugDescription String
Returns a very short pretty description of the gesture that the recognizer looks for, like 'tap' or 'horizontal drag'.
read-only, override
debugOwner Object
The recognizer's owner. [...]
final, inherited
hashCode int
The hash code for this object. [...]
read-only, inherited
isDraggingItem bool Function()
read / write
isHitItem bool Function(Offset globalPosition, Offset localPosition)
read / write
onPanEnd Function
read / write
onPanStart Function
read / write
onPanUpdate Function
read / write
runtimeType Type
A representation of the runtime type of the object.
read-only, inherited
team GestureArenaTeam
The team that this recognizer belongs to, if any. [...]
read / write, inherited
widgetPosition Offset
read / write

Methods

acceptGesture(int pointer) → void
Called when this member wins the arena for the given pointer id.
inherited
addAllowedPointer(PointerDownEvent event) → void
Registers a new pointer that's been checked to be allowed by this gesture recognizer. [...]
@protected, inherited
addPointer(PointerDownEvent event) → void
Registers a new pointer that might be relevant to this gesture detector. [...]
override
debugDescribeChildren() List<DiagnosticsNode>
Returns a list of DiagnosticsNode objects describing this node's children. [...]
inherited
debugFillProperties(DiagnosticPropertiesBuilder properties) → void
Add additional properties associated with the node. [...]
inherited
didStopTrackingLastPointer(int pointer) → void
Called when the number of pointers this recognizer is tracking changes from one to zero. [...]
override
dispose() → void
Releases any resources used by the object. [...]
inherited
getKindForPointer(int pointer) PointerDeviceKind
For a given pointer ID, returns the device kind associated with it. [...]
@protected, inherited
handleEvent(PointerEvent event) → void
Called when a pointer event is routed to this recognizer.
override
handleNonAllowedPointer(PointerDownEvent event) → void
Handles a pointer being added that's not allowed by this recognizer. [...]
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
isPointerAllowed(PointerDownEvent event) bool
Checks whether or not a pointer is allowed to be tracked by this recognizer.
@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
resolve(GestureDisposition disposition) → void
Resolves this recognizer's participation in each gesture arena with the given disposition.
@mustCallSuper, @protected, inherited
resolvePointer(int pointer, GestureDisposition disposition) → void
Resolves this recognizer's participation in the given gesture arena with the given disposition.
@mustCallSuper, @protected, inherited
startTrackingPointer(int pointer, [Matrix4 transform]) → void
Causes events related to the given pointer ID to be routed to this recognizer. [...]
@protected, inherited
stopTrackingIfPointerNoLongerDown(PointerEvent event) → void
Stops tracking the pointer associated with the given event if the event is a PointerUpEvent or a PointerCancelEvent event.
@protected, inherited
stopTrackingPointer(int pointer) → void
Stops events related to the given pointer ID from being routed to this recognizer. [...]
@protected, inherited
toDiagnosticsNode({String name, DiagnosticsTreeStyle style}) DiagnosticsNode
Returns a debug representation of the object that is used by debugging tools and by DiagnosticsNode.toStringDeep. [...]
inherited
toString({DiagnosticLevel minLevel = DiagnosticLevel.info}) String
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
A brief description of this object, usually just the runtimeType and the hashCode. [...]
inherited

Operators

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