PositionChildSize class

A position unit that represents the size of a child element.

This position unit returns the size of a child element along the specified axis. If a key is provided, it references a specific child; otherwise, it uses the current child being positioned. This is useful for positioning elements relative to the size of other elements in the layout.

Implemented types

• PositionUnit

Available extensions

• PositionUnitExtension

Constructors

PositionChildSize([Object? key])

Creates a child size position unit.

const

Properties

hashCode → int

The hash code for this object.

no setter, override

key → Object?

Optional key to reference a specific child element.

final

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

clamp({PositionUnit min = const PositionFixed(double.negativeInfinity), PositionUnit max = const PositionFixed(double.infinity)}) → PositionUnit

Available on PositionUnit, provided by the PositionUnitExtension extension

Constrains this position unit within the specified min and max bounds.

computePosition({required ParentLayout parent, required ChildLayout child, required LayoutAxis direction}) → double

Computes the actual position value for this unit.

override

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

times(double other) → PositionUnit

Available on PositionUnit, provided by the PositionUnitExtension extension

Multiplies a position unit by a scalar.

toCodeString() → String

Converts the position unit to a code string representation.

override

toString() → String

A string representation of this object.

override

Operators

operator *(Object other) → PositionUnit

Available on PositionUnit, provided by the PositionUnitExtension extension

Multiplies two position units.

operator +(PositionUnit other) → PositionUnit

Available on PositionUnit, provided by the PositionUnitExtension extension

Adds two position units together.

operator -(PositionUnit other) → PositionUnit

Available on PositionUnit, provided by the PositionUnitExtension extension

Subtracts one position unit from another.

operator /(PositionUnit other) → PositionUnit

Available on PositionUnit, provided by the PositionUnitExtension extension

Divides one position unit by another.

operator ==(Object other) → bool

The equality operator.

override

operator unary-() → PositionUnit

Available on PositionUnit, provided by the PositionUnitExtension extension

Negates this position unit (equivalent to 0 - this).