FPortalArrowAlignment class abstract interface

How an arrow is positioned along the portal's edge that faces its child.

See:

• FPortalArrowDecoration for painting an arrow.
• FPortalArrowStyle for customizing the appearance of a portal's arrow.

Constructors

FPortalArrowAlignment.end(double offset)

Places the arrow offset from the portal edge's end.

const

factory

FPortalArrowAlignment.fraction(double fraction)

Places the arrow at a fraction of the portal edge's length from its start.

const

factory

FPortalArrowAlignment.start(double offset)

Places the arrow offset from the portal edge's start.

const

factory

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

call({required Axis axis, required TextDirection direction, required double length, required double min, required double max, required double childStart, required double childEnd}) → double?

Returns the arrow's center along the edge, or null to hide the arrow.

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

Constants

childCenter → const FPortalArrowAlignment

Centers the arrow on the child, shifting it inward if it clashes with the portal's FPortalArrowStyle.cornerSpacing.