How can I disable the vertical scrolling of a NSScrollView ?

Question

I can't find a quick solution on Google.

Thanks

Possible duplicated: http://stackoverflow.com/questions/12626288/disable-scrolling-in-nstableview — gwdp, Mar 01 '13 at 01:54

score 9 · Answer 1 · answered Aug 16 '16 at 06:12

9

Try this in NSScrollView subclass:

- (void)scrollWheel:(NSEvent *)theEvent
{
    [super scrollWheel:theEvent];

    if ([theEvent deltaY] != 0.0)
    {
        [[self nextResponder] scrollWheel:theEvent];
    }
}

Also you can log it by:

NSLog(@"user scrolled %f horizontally and %f vertically", [theEvent deltaX], [theEvent deltaY]);

answered Aug 16 '16 at 06:12

Ivan Androsenko

608
6
15

This does not block automatic scrolling when reseting the bounds for example. – the Reverend May 27 '21 at 17:42

score 2 · Answer 2 · answered Jun 21 '17 at 23:02

I like Ivan's answer above. However, in my particular case, I had a table view (vertical scrolling) where each row contained a collection view (horizontal scrolling).

When users tried to scroll up/down, if there mouse was hovered over one of the collection views, they wouldn't be able to scroll up or down.

To resolve this, I subclassed the NSScrollView that contained the NSCollectionViews and I overrided this method with the following code:

override func scrollWheel(with event: NSEvent)
{
    if (fabs(Double(event.deltaY)) > fabs(Double(event.deltaX))) {
        self.nextResponder?.scrollWheel(with: event);
    } else {
        super.scrollWheel(with: event);
    }
}

This way, it checks if the user is predominantly scrolling in one direction and handles it appropriately.

dasdom · Accepted Answer · 2012-03-21T09:26:28.343

-1

You could observe the content offset in scrollViewDidScroll: and set the x value to the value you like.

Edit: Ok, then. Have you seen this: Constraining Scrolling?

edited Mar 21 '12 at 09:26

answered Mar 21 '12 at 08:49

dasdom

13,975
2
47
58

2

I'm on mac, the link you gave me is for iOS – aneuryzm Mar 21 '12 at 08:53
I've checked the link you passed me. I don't understand why I get null bounds: [scrolledView bounds] is (null). – aneuryzm Mar 21 '12 at 09:46
Ya, the scrolledView is a NSClipView (just checked in the console) which is a subclass of NSView, so it should have bounds – aneuryzm Mar 21 '12 at 10:15
The link above to "Constraining Scrolling" contains the correct answer. Thanks! – Todd Ditchendorf May 26 '13 at 22:05

score -9 · Answer 4 · answered Mar 22 '12 at 10:28

-9

was wondering if you came across

- (void)setHasVerticalScroller:(BOOL)flag;

to disable the vertical scrollbar ?

You can also set this in Interface Builder.

answered Mar 22 '12 at 10:28

jankoen

518
5
10

6

It hides the scroller, but the scrolling is still possible by gestures – aneuryzm Mar 22 '12 at 10:39

How can I disable the vertical scrolling of a NSScrollView ?

4 Answers4

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