Which component in UIKit is responsible for changing the position and size of the Bounds area through the origin property?

In UIKit, changing the position and size of the Bounds rectangle through the origin property affects the internal coordinate system of the UIView. The component responsible for this is the UIView itself.

The bounds property defines the internal rectangle of the view in its own coordinate system. Changing the origin in bounds shifts the coordinate system inside the view, which affects the placement of its content, but does not change the position of the view itself in the hierarchy.

Thus, it is the UIView that manages the change of bounds.origin, which allows, for example, shifting the view's content without changing its frame.