HitTestableGestureDetector<T extends Object> class

A Gesture Detector that uses a Listener for taps (to capture hits and misses without blocking the gesture arena for underlying layers) and a RawGestureDetector for drags/long-presses (which require arena participation to claim the gesture from the Map).

hitTest returns the data associated with the hit object (or null if miss).

Taps:

  • Handled by Listener.
  • Fired for BOTH hits and misses.
  • Passes T? to callbacks (allowing "Deselect" or "Move on Tap" logic).
  • Does NOT block map clicks or other layers.

Drags (Pan) & LongPress:

  • Handled by RawGestureDetector.
  • Fired ONLY for hits (Result != null).
  • This prevents the detector from blocking Map Panning when dragging on empty space.
Inheritance

Constructors

HitTestableGestureDetector({Key? key, required HitTestCallback<T> hitTest, DragStartWithDataCallback<T>? onPanStart, DragUpdateWithDataCallback<T>? onPanUpdate, DragEndWithDataCallback<T>? onPanEnd, TapUpWithDataCallback<T>? onTapUp, TapUpWithDataCallback<T>? onSecondaryTapUp, LongPressStartWithDataCallback<T>? onLongPressStart, LongPressMoveUpdateWithDataCallback<T>? onLongPressMoveUpdate, LongPressEndWithDataCallback<T>? onLongPressEnd, HoverWithDataCallback<T>? onHover, Widget? child, HitTestBehavior? behavior})
const

Properties

behavior → HitTestBehavior?
final
child → Widget?
final
hashCode → int
The hash code for this object.
no setterinherited
hitTest → HitTestCallback<T>
final
key → Key?
Controls how one widget replaces another widget in the tree.
finalinherited
onHover → HoverWithDataCallback<T>?
final
onLongPressEnd → LongPressEndWithDataCallback<T>?
final
onLongPressMoveUpdate → LongPressMoveUpdateWithDataCallback<T>?
final
onLongPressStart → LongPressStartWithDataCallback<T>?
final
onPanEnd → DragEndWithDataCallback<T>?
final
onPanStart → DragStartWithDataCallback<T>?
final
onPanUpdate → DragUpdateWithDataCallback<T>?
final
onSecondaryTapUp → TapUpWithDataCallback<T>?
final
onTapUp → TapUpWithDataCallback<T>?
final
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
createState() → State<HitTestableGestureDetector<T>>
Creates the mutable state for this widget at a given location in the tree.
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
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