Struct LayoutNodeHot

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pub struct LayoutNodeHot {
    pub box_props: PackedBoxProps,
    pub dom_node_id: Option<NodeId>,
    pub used_size: Option<LogicalSize>,
    pub formatting_context: FormattingContext,
    pub parent: Option<usize>,
}

Expand description

Hot layout node fields — accessed on every node in every layout pass.

Stored in a separate Vec for cache locality. At ~100 bytes per node, 1000 nodes fit in ~100 KB (L2 cache), vs ~550 KB with the monolithic struct.

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§box_props: PackedBoxProps

The resolved box model properties (margin, border, padding) Stored in packed i16×10 encoding to reduce cache footprint. Use box_props.unpack() to get f32 ResolvedBoxProps for computation.

§dom_node_id: Option<NodeId>

Reference back to the original DOM node (None for anonymous boxes)

§used_size: Option<LogicalSize>

The size used during the last layout pass.

§formatting_context: FormattingContext

The formatting context this node establishes or participates in.

§parent: Option<usize>

Parent index (None for root)

Trait Implementations§

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impl Clone for LayoutNodeHot

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fn clone(&self) -> LayoutNodeHot

Returns a duplicate of the value. Read more

1.0.0 (const: unstable) · Source§

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

Performs copy-assignment from source. Read more

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impl Debug for LayoutNodeHot

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

Formats the value using the given formatter. Read more

Auto Trait Implementations§

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impl UnwindSafe for LayoutNodeHot

Blanket 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> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)

Performs copy-assignment from self to dest. 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 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> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more

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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more

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