CompositeScroller class

Composite Scroller that walks multiple host scrollables in the ScrollPlan order — vertical (largest first), then horizontal strips, topmost layer only.

Inheritance

• Object
• Scroller
• CompositeScroller

Constructors

CompositeScroller({required UiSnapshot? captureSnapshot(), double cycleTolerancePx = 8.0})

Properties

captureSnapshot → UiSnapshot? Function()

final

cycleTolerancePx → double

Threshold for the extremum-based cycle detector.

final

hashCode → int

The hash code for this object.

no setter, inherited

position → double?

Always returns null — by design.

no setter, override

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

positionFromSnapshot(UiSnapshot snapshot) → double?

Like position, but reuses an already-captured snapshot instead of forcing the scroller to capture its own.

inherited

reset() → void

Clear all per-exploration state: exhaustion sets, visited-offset history, sub-scroller cache.

override

scrollByPixels(double pixels) → Future<bool>

Coarse step on alignment requests, with a refuse-small-delta guard.

override

stepBackward() → Future<bool>

Advance one step backward (toward the start of the scrollable).

override

stepForward() → Future<bool>

Advance one step forward.

override

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited