LongPressDraggable<T> class

Makes its child draggable starting from long press.

Inheritance

Constructors

LongPressDraggable({Key key, @required Widget child, @required Widget feedback, T data, Axis axis, Widget childWhenDragging, Offset feedbackOffset: Offset.zero, DragAnchor dragAnchor: DragAnchor.child, int maxSimultaneousDrags, VoidCallback onDragStarted, DraggableCanceledCallback onDraggableCanceled, DragEndCallback onDragEnd, VoidCallback onDragCompleted, bool hapticFeedbackOnStart: true, bool ignoringFeedbackSemantics: true })
Creates a widget that can be dragged starting from long press. [...]
const

Properties

hapticFeedbackOnStart → bool
Whether haptic feedback should be triggered on drag start.
final
affinity → Axis
Controls how this widget competes with other gestures to initiate a drag. [...]
final, inherited
axis → Axis
The Axis to restrict this draggable's movement, if specified. [...]
final, inherited
child → Widget
The widget below this widget in the tree. [...]
final, inherited
childWhenDragging → Widget
The widget to display instead of child when one or more drags are under way. [...]
final, inherited
data → T
The data that will be dropped by this draggable.
final, inherited
dragAnchor → DragAnchor
Where this widget should be anchored during a drag.
final, inherited
feedback → Widget
The widget to show under the pointer when a drag is under way. [...]
final, inherited
feedbackOffset → Offset
The feedbackOffset can be used to set the hit test target point for the purposes of finding a drag target. It is especially useful if the feedback is transformed compared to the child.
final, inherited
hashCode → int
The hash code for this object. [...]
read-only, inherited
ignoringFeedbackSemantics → bool
Whether the semantics of the feedback widget is ignored when building the semantics tree. [...]
final, inherited
key → Key
Controls how one widget replaces another widget in the tree. [...]
final, inherited
maxSimultaneousDrags → int
How many simultaneous drags to support. [...]
final, inherited
onDragCompleted → VoidCallback
Called when the draggable is dropped and accepted by a DragTarget. [...]
final, inherited
onDragEnd → DragEndCallback
Called when the draggable is dropped. [...]
final, inherited
onDraggableCanceled → DraggableCanceledCallback
Called when the draggable is dropped without being accepted by a DragTarget. [...]
final, inherited
onDragStarted → VoidCallback
Called when the draggable starts being dragged.
final, inherited
runtimeType → Type
A representation of the runtime type of the object.
read-only, inherited

Methods

createRecognizer(GestureMultiDragStartCallback onStart) → DelayedMultiDragGestureRecognizer
Creates a gesture recognizer that recognizes the start of the drag. [...]
override
createElement() → StatefulElement
Creates a StatefulElement to manage this widget's location in the tree. [...]
inherited
createState() → _DraggableState<T>
Creates the mutable state for this widget at a given location in the tree. [...]
inherited
debugDescribeChildren() → List<DiagnosticsNode>
Returns a list of DiagnosticsNode objects describing this node's children. [...]
@protected, inherited
debugFillProperties(DiagnosticPropertiesBuilder properties) → void
Add additional properties associated with the node. [...]
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a non-existent method or property is accessed. [...]
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.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
A short, textual description of this widget.
inherited

Operators

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