ScrollContext class abstract

An interface that Scrollable widgets implement in order to use ScrollPosition.

See also:

  • ScrollableState, which is the most common implementation of this interface.
  • ScrollPosition, which uses this interface to communicate with the scrollable widget.
Implementers

Constructors

ScrollContext()

Properties

axisDirection AxisDirection
The direction in which the widget scrolls.
no setter
devicePixelRatio double
The FlutterView.devicePixelRatio of the view that the Scrollable this ScrollContext is associated with is drawn into.
no setter
hashCode int
The hash code for this object.
no setterinherited
notificationContext BuildContext?
The BuildContext that should be used when dispatching ScrollNotifications.
no setter
runtimeType Type
A representation of the runtime type of the object.
no setterinherited
storageContext BuildContext
The BuildContext that should be used when searching for a PageStorage.
no setter
vsync TickerProvider
A TickerProvider to use when animating the scroll position.
no setter

Methods

noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
saveOffset(double offset) → void
Called by the ScrollPosition whenever scrolling ends to persist the provided scroll offset for state restoration purposes.
setCanDrag(bool value) → void
Whether the user can drag the widget, for example to initiate a scroll.
setIgnorePointer(bool value) → void
Whether the contents of the widget should ignore PointerEvent inputs.
setSemanticsActions(Set<SemanticsAction> actions) → void
Set the SemanticsActions that should be expose to the semantics tree.
toString() String
A string representation of this object.
inherited

Operators

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