M3ECarouselScrollHelper class abstract final

Scroll-step helpers for carousel frame navigation.

Properties

hashCode → int

The hash code for this object.

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited

Static Methods

maxIndex({required M3ECarouselType type, required M3ECarouselHeroAlignment heroAlignment, required bool isExtended, required int childrenLength}) → int

Largest step index for type. Negative when the track cannot step.

nextStep({required M3ECarouselType type, required M3ECarouselHeroAlignment heroAlignment, required bool isExtended, required double uncontainedItemExtent, required double leadingGap, required List<int> layoutWeight, required double mainExtent, required int childrenLength, required int itemScrolled, required double prevScrollPosition, required int direction}) → ({int itemScrolled, double nextScrollPosition})?

Computes the next scroll position and updated itemScrolled for one step.

offsetForIndex({required M3ECarouselType type, required M3ECarouselHeroAlignment heroAlignment, required bool isExtended, required double uncontainedItemExtent, required double leadingGap, required List<int> layoutWeight, required double mainExtent, required int childrenLength, required int index}) → double

Scroll offset that places index where a swipe would land it.