LongPressDraggable<T extends Object> class
Makes its child draggable starting from long press.
See also:
- Draggable, similar to the LongPressDraggable widget but happens immediately.
- DragTarget, a widget that receives data when a Draggable widget is dropped.
- Inheritance
-
- Object
- DiagnosticableTree
- Widget
- StatefulWidget
- Draggable<
T> - LongPressDraggable
Constructors
- LongPressDraggable({Key? key, required Widget child, required Widget feedback, T? data, Axis? axis, Widget? childWhenDragging, Offset feedbackOffset = Offset.zero, DragAnchorStrategy dragAnchorStrategy = childDragAnchorStrategy, int? maxSimultaneousDrags, VoidCallback? onDragStarted, DragUpdateCallback? onDragUpdate, DraggableCanceledCallback? onDraggableCanceled, DragEndCallback? onDragEnd, VoidCallback? onDragCompleted, bool hapticFeedbackOnStart = true, bool ignoringFeedbackSemantics = true, bool ignoringFeedbackPointer = true, Duration delay = kLongPressTimeout, AllowedButtonsFilter? allowedButtonsFilter, HitTestBehavior hitTestBehavior = HitTestBehavior.deferToChild, bool rootOverlay = false})
- Creates a widget that can be dragged starting from long press. const
Properties
- affinity → Axis?
- Controls how this widget competes with other gestures to initiate a drag. finalinherited
- allowedButtonsFilter → AllowedButtonsFilter?
- Called when interaction starts. This limits the dragging behavior for custom clicks (such as scroll click). Its parameter comes from PointerEvent.buttons. finalinherited
- axis → Axis?
- The Axis to restrict this draggable's movement, if specified. finalinherited
- child → Widget
- The widget below this widget in the tree. finalinherited
- childWhenDragging → Widget?
- The widget to display instead of child when one or more drags are under way. finalinherited
- data → T?
- The data that will be dropped by this draggable. finalinherited
- delay → Duration
- The duration that a user has to press down before a long press is registered. final
- dragAnchorStrategy → DragAnchorStrategy
- A strategy that is used by this draggable to get the anchor offset when it is dragged. finalinherited
- feedback → Widget
- The widget to show under the pointer when a drag is under way. finalinherited
- 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. finalinherited
- hapticFeedbackOnStart → bool
- Whether haptic feedback should be triggered on drag start. final
- hashCode → int
- The hash code for this object. no setterinherited
- hitTestBehavior → HitTestBehavior
- How to behave during hit test. finalinherited
- ignoringFeedbackPointer → bool
- Whether the feedback widget is ignored during hit testing. finalinherited
- ignoringFeedbackSemantics → bool
- Whether the semantics of the feedback widget is ignored when building the semantics tree. finalinherited
- key → Key?
- Controls how one widget replaces another widget in the tree. finalinherited
- maxSimultaneousDrags → int?
- How many simultaneous drags to support. finalinherited
- onDragCompleted → VoidCallback?
- Called when the draggable is dropped and accepted by a DragTarget. finalinherited
- onDragEnd → DragEndCallback?
- Called when the draggable is dropped. finalinherited
- onDraggableCanceled → DraggableCanceledCallback?
- Called when the draggable is dropped without being accepted by a DragTarget. finalinherited
- onDragStarted → VoidCallback?
- Called when the draggable starts being dragged. finalinherited
- onDragUpdate → DragUpdateCallback?
- Called when the draggable is dragged. finalinherited
- rootOverlay → bool
- Whether the feedback widget will be put on the root Overlay. finalinherited
- runtimeType → Type
- A representation of the runtime type of the object. no setterinherited
Methods
- createElement(
) → StatefulElement - Creates a StatefulElement to manage this widget's location in the tree. inherited
- createRecognizer(
GestureMultiDragStartCallback onStart) → DelayedMultiDragGestureRecognizer - Creates a gesture recognizer that recognizes the start of the drag. override
- createState(
) → State< Draggable< 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. inherited
- debugFillProperties(
DiagnosticPropertiesBuilder properties) → void - Add additional properties associated with the node. inherited
- noSuchMethod(
Invocation invocation) → dynamic - Invoked when a nonexistent 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.info}) → String - A string representation of this object. inherited
- toStringDeep(
{String prefixLineOne = '', String? prefixOtherLines, DiagnosticLevel minLevel = DiagnosticLevel.debug, int wrapWidth = 65}) → 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 ==(
Object other) → bool - The equality operator. inherited