SnappingListScrollPhysics class - view library

Constructors

SnappingListScrollPhysics({required double itemWidth, ScrollPhysics? parent}): Supply the intended width of the items scrolled. Optionally supply a 'parent' Physics object to encompass.
const

Properties

allowImplicitScrolling → bool: Whether a viewport is allowed to change its scroll position implicitly in response to a call to RenderObject.showOnScreen.
no setteroverride
allowUserScrolling → bool: Whether a viewport is allowed to change the scroll position as the result of user input.
no setterinherited
dragStartDistanceMotionThreshold → double?: The minimum amount of pixel distance drags must move by to start motion the first time or after each time the drag motion stopped.
no setterinherited
hashCode → int: The hash code for this object.
no setterinherited
itemWidth → double: Supply the intended width of the items scrolled.
final
maxFlingVelocity → double: Scroll fling velocity magnitudes will be clamped to this value.
no setterinherited
minFlingDistance → double: The minimum distance an input pointer drag must have moved to be considered a scroll fling gesture.
no setterinherited
minFlingVelocity → double: The minimum velocity for an input pointer drag to be considered a scroll fling.
no setterinherited
parent → ScrollPhysics?: If non-null, determines the default behavior for each method.
finalinherited
runtimeType → Type: A representation of the runtime type of the object.
no setterinherited
spring → SpringDescription: The spring to use for ballistic simulations.
no setterinherited
tolerance → Tolerance: Deprecated. Call toleranceFor instead.
no setterinherited

Methods

adjustPositionForNewDimensions({required ScrollMetrics oldPosition, required ScrollMetrics newPosition, required bool isScrolling, required double velocity}) → double: Describes what the scroll position should be given new viewport dimensions.
inherited
applyBoundaryConditions(ScrollMetrics position, double value) → double: Determines the overscroll by applying the boundary conditions.
inherited
applyPhysicsToUserOffset(ScrollMetrics position, double offset) → double: Used by DragScrollActivity and other user-driven activities to convert an offset in logical pixels as provided by the DragUpdateDetails into a delta to apply (subtract from the current position) using ScrollActivityDelegate.setPixels.
inherited
applyTo(ScrollPhysics? ancestor) → SnappingListScrollPhysics: Combines this ScrollPhysics instance with the given physics.
override
buildParent(ScrollPhysics? ancestor) → ScrollPhysics?: If parent is null then return ancestor, otherwise recursively build a ScrollPhysics that has ancestor as its parent.
inherited
carriedMomentum(double existingVelocity) → double: Returns the velocity carried on repeated flings.
inherited
createBallisticSimulation(ScrollMetrics position, double velocity) → Simulation?: Returns a simulation for ballistic scrolling starting from the given position with the given velocity.
override
noSuchMethod(Invocation invocation) → dynamic: Invoked when a nonexistent method or property is accessed.
inherited
recommendDeferredLoading(double velocity, ScrollMetrics metrics, BuildContext context) → bool: Provides a heuristic to determine if expensive frame-bound tasks should be deferred.
inherited
shouldAcceptUserOffset(ScrollMetrics position) → bool: Whether the scrollable should let the user adjust the scroll offset, for example by dragging. If allowUserScrolling is false, the scrollable will never allow user input to change the scroll position.
inherited
toleranceFor(ScrollMetrics metrics) → Tolerance: The tolerance to use for ballistic simulations.
inherited
toString() → String: A string representation of this object.
inherited

Operators

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