NSDocument and control of multiple views
I have a document-based application that has a custom view that fills
much of the content view. In that custom view I want to display a
"page" like a piece of paper. As the window is scaled, the "page"
scales. This all works either if I code the page as a part of the
custom view, or if I set it up as another custom view which is a
subview of the larger view.
But which is the better approach? I will want to work at two scales at
all times: the scale on the page and the scale on the custom view.
Will a subview make that easier?
If I do use a subview, then what should my philosophy be for
communicating among objects? I *think* that the NSDocument should
manage both views. If the user resizes the window, that will resize
the frame of the custom view. That will send a notification to the
NSDocument which will make the appropriate changes to both views
(scaling, bounds, whatever). Or is there a better way?