Struct LayoutChild 

pub struct LayoutChild<'a> { /* private fields */ }

A direct child layout node available during a measure pass.

Implementations

impl<'a> LayoutChild<'a>

pub fn measure( &self, constraint: &Constraint, ) -> Result<MeasuredChild, MeasurementError>

Measures this child under the given constraint.

pub fn measure_untracked( &self, constraint: &Constraint, ) -> Result<MeasuredChild, MeasurementError>

Measures this child without recording it for layout cache keys.

pub fn parent_data<T>(&self) -> Option<T>

where T: Clone + Send + Sync + 'static,

Reads a typed parent-data payload from this direct child layout node.

Trait Implementations

impl<'a> Clone for LayoutChild<'a>

fn clone(&self) -> LayoutChild<'a>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Hash for LayoutChild<'_>

fn hash<H: Hasher>(&self, state: &mut H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for LayoutChild<'_>

fn eq(&self, other: &Self) -> 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<'a> Copy for LayoutChild<'a>

impl Eq for LayoutChild<'_>

impl LayoutPlacementTarget for LayoutChild<'_>