BoundingBoxState
BoundingBoxCallbacks(BoundingBoxState* const state);
BoundingBoxState* const fState;
BoundingBoxCallbacks::BoundingBoxCallbacks(BoundingBoxState* const state)
expand_rect_for_pen_size(BoundingBoxState* state, RectType& rect)
determine_bounds_bezier(BoundingBoxState* state, const BPoint viewPoints[4],
determine_bounds_polygon(BoundingBoxState* state, int32 numPoints,