createPainter method

@override CustomPainter createPainter(BuildContext context, TreeEntry<Object> entry)

Subclasses must override this method to provide the CustomPainter that will handle line painting.

Implementation

@override
CustomPainter createPainter(BuildContext context, TreeEntry<Object> entry) {
  return _ScopingLinesPainter(
    guide: this,
    nodeLevel: entry.level,
    textDirection: Directionality.maybeOf(context),
  );
}