Enum MainAxisSize 

pub enum MainAxisSize {
    Min,
    Max,
}

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:

• RenderFlex, the flex render object.
• MainAxisAlignment, which controls how the free space is distributed.

Variants

Min

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::min_width or BoxConstraints::min_height, 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, the RenderFlex will assert, because there would be infinite remaining free space and boxes cannot be given infinite size.

Max

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::max_width or BoxConstraints::max_height, 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.

Trait Implementations

impl Clone for MainAxisSize

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for MainAxisSize

impl Debug for MainAxisSize

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Eq for MainAxisSize

impl PartialEq for MainAxisSize

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for MainAxisSize