PanAwareBuilder class Null safety

A widget builder, which is aware of pan gestures and handles them.

Pan events are handled by the underlying physics. Whenever a new PanState is available, the given builder is called wit the new information.

If a new state signals that a fling/swipe gesture occurred by setting PanState.wasFlung to true, the onFling callback is called.

See also:

Inheritance

Constructors

PanAwareBuilder({required Widget builder(BuildContext, PanState), required PanPhysics physics, HitTestBehavior? behavior, VoidCallback? onFling})

Properties

behavior HitTestBehavior?
The HitTestBehavior to be used by the underlying GestureDetector.
final
builder Widget Function(BuildContext, PanState)
The builder, which is called with the current PanState whenever it changes.
final
hashCode int
The hash code for this object. [...]
@nonVirtual, read-only, inherited
key Key?
Controls how one widget replaces another widget in the tree. [...]
final, inherited
onFling VoidCallback?
The callback to be called whenever a fling/swipe gesture is detected.
final
physics PanPhysics
The PanPhysics to be used for calculating pan states.
final
runtimeType Type
A representation of the runtime type of the object.
read-only, inherited

Methods

build(BuildContext context) Widget
Describes the part of the user interface represented by this widget. [...]
override
createElement() → _StatelessHookElement
Creates a StatelessElement to manage this widget's 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.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 short, textual description of this widget.
inherited

Operators

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