MainAxisSize enum Null safety

How much space should be occupied in the main axis.

During a flex layout, available space along the main axis is allocated to children. After allocating space, there might be some remaining free space. This value controls whether to maximize or minimize the amount of free space, subject to the incoming layout constraints.

See also:

Inheritance

Constructors

MainAxisSize()
const

Values

min → const MainAxisSize

Minimize the amount of free space along the main axis, subject to the incoming layout constraints.

If the incoming layout constraints have a large enough BoxConstraints.minWidth or BoxConstraints.minHeight, there might still be a non-zero amount of free space.

If the incoming layout constraints are unbounded, and any children have a non-zero FlexParentData.flex and a FlexFit.tight fit (as applied by Expanded), the RenderFlex will assert, because there would be infinite remaining free space and boxes cannot be given infinite size.

MainAxisSize()
max → const MainAxisSize

Maximize the amount of free space along the main axis, subject to the incoming layout constraints.

If the incoming layout constraints have a small enough BoxConstraints.maxWidth or BoxConstraints.maxHeight, there might still be no free space.

If the incoming layout constraints are unbounded, the RenderFlex will assert, because there would be infinite remaining free space and boxes cannot be given infinite size.

MainAxisSize()

Properties

hashCode int
The hash code for this object.
read-only, inherited
index int
A numeric identifier for the enumerated value.
read-only, inherited
runtimeType Type
A representation of the runtime type of the object.
read-only, inherited

Methods

noSuchMethod(Invocation invocation) → dynamic
Invoked when a non-existent 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

values → const List<MainAxisSize>
A constant List of the values in this enum, in order of their declaration.
[min, max]