Struct BoxConstraints 

pub struct BoxConstraints { /* private fields */ }

Min/max size bounds passed down during layout. Every constructor keeps both non-negative with min <= max, so constrain never panics.

Implementations

impl BoxConstraints

pub fn new(min: Size, max: Size) -> BoxConstraints

Bounds clamped non-negative; an inverted axis widens max to min, with a debug-build diagnostic since it usually means an upstream layout bug.

pub fn tight(size: Size) -> BoxConstraints

Tight constraints that force an exact size (min == max == size).

pub fn loose(max: Size) -> BoxConstraints

Loose constraints allowing anything from zero up to max.

pub fn min(&self) -> Size

The minimum allowed size.

pub fn max(&self) -> Size

The maximum allowed size.

pub fn constrain(&self, size: Size) -> Size

Clamp size so it lies within [min, max] on both axes.

pub fn loosen(&self) -> BoxConstraints

Relax the minimum to zero, keeping the same maximum.

pub fn tighten(&self, size: Size) -> BoxConstraints

Tight constraints at size clamped into this range.

pub fn is_tight(&self) -> bool

Whether the constraints force an exact size (min == max).

Trait Implementations

impl Clone for BoxConstraints

fn clone(&self) -> BoxConstraints

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for BoxConstraints

impl Debug for BoxConstraints

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

Formats the value using the given formatter.

impl PartialEq for BoxConstraints

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for BoxConstraints