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Improved updatePageNumberForScrollView: when reversing #9

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Improved updatePageNumberForScrollView: when reversing #9

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9 changes: 8 additions & 1 deletion SMPageControl.m
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Original file line number Diff line number Diff line change
Expand Up @@ -342,7 +342,14 @@ - (void)sizeToFit

- (void)updatePageNumberForScrollView:(UIScrollView *)scrollView
{
NSInteger page = (int)floorf(scrollView.contentOffset.x / scrollView.bounds.size.width);
// Use the trailing edge on reverse and leading edge on forward
NSInteger page;
if (self.currentPage * scrollView.bounds.size.width > scrollView.contentOffset.x) {
page = (int)ceilf(scrollView.contentOffset.x / scrollView.bounds.size.width);
} else {
page = (int)floorf(scrollView.contentOffset.x / scrollView.bounds.size.width);
}

self.currentPage = page;
}

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