LabelLayout class abstract final

One-dimensional label de-collision used wherever chart labels would overlap: axis ticks (drop overlapping labels) and trackball value rows (nudge them apart). Pure value math — no canvas, fully unit-testable.

Properties

hashCode → int

The hash code for this object.

no setter, inherited

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.

inherited

Static Methods

spread(List<double> centers, double minGap, double lo, double hi) → List<double>

Nudges centers apart so adjacent labels keep at least minGap between their centers, while staying within [lo, hi]. Preserves input order in the returned list; the result is the adjusted center for each input index.

thin(List<double> centers, List<double> widths, double minGap) → List<int>

Returns the indices to keep so that drawn label boxes — each centered at centers[i] with width widths[i] — do not overlap, leaving at least minGap between neighboring boxes. Greedy left-to-right; the first label in position order is always kept.