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LayoutEngine

Struct LayoutEngine 

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pub struct LayoutEngine { /* private fields */ }
Expand description

Layout engine with memoization.

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impl LayoutEngine

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pub fn new() -> Self

Create a new layout engine.

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pub fn compute(&mut self, root: &mut dyn Widget, viewport: Size) -> LayoutTree

Compute layout for the widget tree.

This performs a two-phase layout:

  1. Measure phase (bottom-up): Determine intrinsic sizes
  2. Layout phase (top-down): Assign final positions and sizes
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pub fn compute_readonly( &mut self, root: &dyn Widget, viewport: Size, ) -> LayoutTree

Compute layout with read-only widget tree (for measurement only).

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pub fn clear_cache(&mut self)

Clear the layout cache.

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pub const fn cache_stats(&self) -> (usize, usize)

Get cache statistics.

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impl Debug for LayoutEngine

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

Formats the value using the given formatter. Read more
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impl Default for LayoutEngine

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fn default() -> LayoutEngine

Returns the “default value” for a type. Read more

Auto Trait Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.