I want an NSStackView which can be scrolled. I dragged an NSScrollView out in
IB, that gives me a scrollview, the scrollers, a clip view and a child NSView
of the clip view, which IB doesn’t want you to delete. I dragged my NSStackView
out and made it a child of that view
+- NSScrollview
+- NSClipView
+- NSView
+- NSStackView
There were no constraints set up initially between anything and anything else.
After a large amount of messing about I constrained the NSStackView to all 4
sides of its parent, non-deletable NSView. I then constrained that NSView top,
left and right (but not bottom) to its parent, the ClipView. This almost
worked, except the StackView grew from the bottom up, not the top down, so I
subclassed NSClipView to return YES for isFlipped.
This appears to actually work but I don’t entirely understand every piece of
why. I think I understand why the NSView ends up being the intrinsic content
size of the StackView, which is what I want, and why the clipview is allowed to
be independent of that piece of content (only pinned on three sides). But I
don’t understand what’s driving the contentSize of the scrollview for me.
More generally, is this how you’re supposed to set up a view which has
intrinsic content size inside a scroll view in IB, pin that view to the NSView
IB gives you, then pin that to the clipview on 3 sides only and flip the clip
(why?).
I did try changing the class of the NSView I can’t delete to NSStackView and
avoid the middle man, very bad things happened, constraints were generated in
constraint language which didn’t parse, so I decided to put it back where it
was.
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