Struct CustomNode 

pub struct CustomNode<'a> {
    pub label: &'a str,
    pub width: usize,
    pub height: usize,
    pub painter: Option<NodePaintFn>,
    pub payload: &'a str,
}

The explicit five-field custom-node form, for callers who want no trait impl of their own.

Fields

label: &'a str

Label (legends, JSON, debug).

width: usize

Reserved width in cells.

height: usize

Reserved height in rows.

painter: Option<NodePaintFn>

Template fn; None = blank (area reserved, nothing painted).

payload: &'a str

Data delivered to the painter via NodePaintCtx.

Trait Implementations

impl<'a> Clone for CustomNode<'a>

fn clone(&self) -> CustomNode<'a>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'a> Copy for CustomNode<'a>

impl<'a> Debug for CustomNode<'a>

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

Formats the value using the given formatter.

impl<'a> NodeContent<'a> for CustomNode<'a>

fn label(&self) -> &'a str

The node’s label text.

fn size(&self) -> (usize, usize)

Reserved (width, height) in cells/rows. Layout routes edges around this area; the painter fills it.

fn painter(&self) -> Option<NodePaintFn>

The template fn that fills the reserved area, if any.

fn payload(&self) -> &'a str

Data for the painter: travels like a second label, delivered via NodePaintCtx at paint time and exported to JSON as "payload" on custom nodes.