Enum Flex 

#[non_exhaustive]
pub enum Flex {
    Start,
    End,
    Center,
    SpaceBetween,
    SpaceAround,
}

How leftover space is placed along the split axis, once Constraints are resolved.

Only matters when the resolved pane sizes sum to less than area’s length; passed to split_v_flex/split_h_flex.

split_v/split_h always behave like Start: any leftover space trails after the last pane, unclaimed. This matches their existing documented behavior, so adding Flex does not change them.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Start

Panes are packed at the start of the area; leftover space trails after the last pane. The default, and what split_v/split_h use.

End

Panes are packed at the end of the area; leftover space leads before the first pane.

Center

Leftover space is split evenly before and after the panes.

SpaceBetween

Leftover space is distributed as gaps between panes (none before the first or after the last). No-op with fewer than two panes.

SpaceAround

Leftover space is distributed as equal-width gaps around every pane, including before the first and after the last.

Trait Implementations

impl Clone for Flex

fn clone(&self) -> Flex

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Flex

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

Formats the value using the given formatter.

impl Default for Flex

fn default() -> Flex

Returns the “default value” for a type.

impl PartialEq for Flex

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for Flex

impl Eq for Flex

impl StructuralPartialEq for Flex