Struct Placeable 

pub struct Placeable { /* private fields */ }

Result of running a measurement pass for a single child.

Carries measurement and alignment lines without allocating a trait object.

Implementations

impl Placeable

pub fn value(width: f32, height: f32, node_id: NodeId) -> Self

Creates a pure-value placeable with no side effects on place().

pub fn value_with_offset( width: f32, height: f32, node_id: NodeId, content_offset: (f32, f32), ) -> Self

Creates a pure-value placeable with a content offset.

pub fn with_place_target( width: f32, height: f32, node_id: NodeId, target: Rc<dyn PlaceTarget>, ) -> Self

Creates a node-backed placeable whose place() tells target. The target is shared, so a node’s own measure state can be it without an allocation per measure.

pub fn place(&self, x: f32, y: f32)

Places the child at the provided coordinates relative to its parent.

pub fn width(&self) -> f32

Returns the measured width of the child.

pub fn height(&self) -> f32

Returns the measured height of the child.

pub fn node_id(&self) -> NodeId

Returns the identifier for the underlying layout node.

pub fn content_offset(&self) -> (f32, f32)

Returns the accumulated content offset from the coordinator chain.

pub fn with_alignment_lines(self, alignment_lines: AlignmentLines) -> Self

Supplies alignment lines relative to this placeable’s top edge.

pub fn alignment_lines(&self) -> AlignmentLines

Returns the text baselines relative to this placeable’s top edge.