Struct EmptyMeasurePolicy 

pub struct EmptyMeasurePolicy;

EmptyMeasurePolicy that delegates all measurement to modifier nodes.

This is used when a Layout has no child layout logic - all measurement is handled by modifier nodes (e.g., TextModifierNode for Text widgets). Matches Jetpack Compose’s EmptyMeasurePolicy pattern used in BasicText.

Implementations

impl EmptyMeasurePolicy

pub fn new() -> Self

Trait Implementations

impl Clone for EmptyMeasurePolicy

fn clone(&self) -> EmptyMeasurePolicy

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for EmptyMeasurePolicy

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

Formats the value using the given formatter.

impl Default for EmptyMeasurePolicy

fn default() -> Self

Returns the “default value” for a type.

impl MeasurePolicy for EmptyMeasurePolicy

fn measure( &self, _measurables: &[Box<dyn Measurable>], constraints: Constraints, ) -> MeasureResult

Runs the measurement pass with the provided children and constraints.

fn min_intrinsic_width( &self, _measurables: &[Box<dyn Measurable>], _height: f32, ) -> f32

Computes the minimum intrinsic width of this policy.

fn max_intrinsic_width( &self, _measurables: &[Box<dyn Measurable>], _height: f32, ) -> f32

Computes the maximum intrinsic width of this policy.

fn min_intrinsic_height( &self, _measurables: &[Box<dyn Measurable>], _width: f32, ) -> f32

Computes the minimum intrinsic height of this policy.

fn max_intrinsic_height( &self, _measurables: &[Box<dyn Measurable>], _width: f32, ) -> f32

Computes the maximum intrinsic height of this policy.

impl PartialEq for EmptyMeasurePolicy

fn eq(&self, other: &EmptyMeasurePolicy) -> 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 StructuralPartialEq for EmptyMeasurePolicy