Struct Layout 

pub struct Layout(/* private fields */);

Node positions on the canvas.

Coordinates live beside the graph, not inside Node, for the same reason comments do: they are keyed by identity and must move when a node is renamed. They are kept in the same file as the logic, though — a separate file would drift silently, and a drifted layout scatters the canvas exactly when the graph most needs reading.

Integers, not floats: canvas positions snap to a grid, and exact values round-trip without formatting decisions.

Implementations

impl Layout

pub fn get(&self, name: &str) -> Option<(i32, i32)>

pub fn set(&mut self, name: NodeName, at: (i32, i32))

pub fn iter(&self) -> impl Iterator<Item = (&NodeName, (i32, i32))>

Positions in canonical order, by node name.

pub fn is_empty(&self) -> bool

Trait Implementations

impl Clone for Layout

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Layout

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

Formats the value using the given formatter.

impl Default for Layout

fn default() -> Self

Returns the “default value” for a type.

impl Eq for Layout

impl PartialEq for Layout

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for Layout