CODEWITHSUNDEEP
nsscrollviewscrolltop
user961889
user961889

Reputation: 351

NSScrollView scrollToTop

Does anyone know the correct way to scroll the NSScrollView to the top? I was looking for an equivalent to the UIView's scrollToTop method.

This is what I have so far, but its not quite right under all situations

[self.contentView scrollToPoint:NSMakePoint(0, MAX(contentView.frameHeight, ((NSView*)self.documentView).frameHeight))];

Upvotes: 9

Views: 5612

Answers (4)

JanApotheker
JanApotheker

Reputation: 1906

Updated for Swift 5:

If your document view is flipped:

scrollView.documentView?.scroll(.zero)

otherwise:

if let documentView = scrollView.documentView {
        documentView.scroll(NSPoint(x: 0, y: documentView.bounds.size.height))
}

Upvotes: 19

Mel
Mel

Reputation: 959

The previous solutions scroll to the bottom when translating to Swift for Mac OS. The y coordinate direction is flipped on Mac OS and iOS.

Swift 3 Solution for Mac OS:

scrollView.documentView?.scroll(NSPoint.zero)

Upvotes: 1

Omkar
Omkar

Reputation: 1118

This also works fine. Set scroll point of documentView of NSScrollView

NSPoint pt = NSMakePoint(0.0, [[self.scrollView documentView]
                               bounds].size.height);
[self.scrollView.documentView scrollPoint:pt];

Upvotes: 6

user961889
user961889

Reputation: 351

Finally figured it out. Works like a charm!

if ([self hasVerticalScroller]) {
    self.verticalScroller.floatValue = 0;
}

NSPoint newOrigin = NSMakePoint(0, NSMaxY(((NSView*)self.documentView).frame) - self.boundsHeight);
[self.contentView scrollToPoint:newOrigin];

Upvotes: 11

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