presentation/widgets/common/spotlight_overlay library

Classes

SpotlightHolePainter

Cuts a rounded-rect hole out of a full-screen dim scrim using Path.combine's difference op. Public (rather than the usual underscore-private painter convention in this file's siblings) so a widget test can pull .hole back off the mounted CustomPaint and assert it against the target's real RenderBox bounds.

SpotlightOverlay

Onboarding/tutorial coach-mark: dims the whole screen except a highlighted "hole" cut around a target widget's actual on-screen bounds, plus a guidance callout with a dismiss button.