Struct Constraints 

#[non_exhaustive]
pub struct Constraints {
    pub width: Option<f32>,
    pub height: Option<f32>,
    pub available_width: Available,
    pub available_height: Available,
}

What layout asks a widget in Widget::measure.

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

width: Option<f32>

A width layout already fixed: the answer’s width must be this.

height: Option<f32>

A height layout already fixed: the answer’s height must be this.

available_width: Available

Room for the width.

available_height: Available

Room for the height.

Trait Implementations

impl Clone for Constraints

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 Constraints

impl Debug for Constraints

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

Formats the value using the given formatter.

impl PartialEq for Constraints

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Constraints