clipOverlap property
final
How the clip reacts to the area overlapped by preceding pinned slivers.
When set to ClipOverlapBehavior.followEdge (the default), the clip rectangle is truncated at the overlap boundary defined by SliverConstraints.overlap.
When set to ClipOverlapBehavior.preserveShape, the entire rounded rectangle is shifted inward so that corners remain fully visible, producing a smoother visual effect as items scroll under a pinned header.
When set to ClipOverlapBehavior.none, no overlap clipping is applied and content may render underneath translucent pinned slivers.
See ClipOverlapBehavior for details on each mode.
Implementation
final ClipOverlapBehavior clipOverlap;