On 19 Dec 2008, at 10:57 am, Andy Bettis wrote:
In my app I have an NSScrollView that contains a simple NSView in
which I add other NSView subclass objects. All works well until the
window (and hence the scroller) is resized - making it smaller is OK
but if it is made bigger than the original (IB) size my added views
migrate down the window. I've tried adjusting the autosizing
settings but to no avail.
I'm trying not to have to subclass the containing view, I just want
the scroller to reveal more of it as it is enlarged while leaving my
subviews aligned to the top left corner. Do I need to flip the
coordinates to keep them up there? I'll probably end up limiting the
maximum window size so the user can't make it too big but I'd like
to know what's going on.
One thing I've noticed in this sort of situation is that the "simple
view" will typically need to be flipped, which requires subclassing,
just for that one setting. Otherwise the scroller that contains it
starts off scrolled to the bottom, which is not usually what you want.
Also, remember that the subviews are positioned relative to the bounds
of the "simple view", which presumably is of some fixed size which is
why you want to scroll it. If this view isn't flipped everything will
be positioned relative to the bottom left corner. That should be OK,
but given the behaviour of NSScrollView when it contains a non-flipped
view, I think that's why you're seeing the views move around.
Just try flipping the "simple view".
hth,
Graham
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