TreeLinePlan class

The geometry of the connector/indent lines for a single flattened row.

This is the pure, testable core of tree-line rendering: it decides where lines go (in absolute x-centres) from a FlatNode's position flags. It carries no colour/width/style — those are applied by TreeLinesPainter at paint time.

Annotations

• @immutable

Constructors

TreeLinePlan({required List<double> continuationXs, required double? connectorX, required bool connectorIsLast, required double connectorEndX})

const

TreeLinePlan.forRow({required FlatNode row, required double lineWidth})

Derives the line plan for row. Each column is lineWidth wide and lines are centred within their column.

factory

Properties

connectorEndX → double

Absolute x where the connector's horizontal stub ends (the right edge of the connector column). Only meaningful when connectorX is non-null.

final

connectorIsLast → bool

Whether this row is its parent's last child — the connector's vertical then stops at mid-row instead of running the full row height.

final

connectorX → double?

Absolute x-centre of this row's own connector, or null for a root row (a root has no parent to connect to).

final

continuationXs → List<double>

Absolute x-centres of full-height vertical guides — one for each ancestor that still has siblings below it, so the guide "continues" past this row.

final

hashCode → int

The hash code for this object.

no setter, override

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

override