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fix: fix image zoom center issue #390

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merged 1 commit into from Apr 10, 2024
Merged

fix: fix image zoom center issue #390

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13 changes: 13 additions & 0 deletions Sources/Mantis/CropView/CropView+UIScrollViewDelegate.swift
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Expand Up @@ -24,6 +24,19 @@ extension CropView: UIScrollViewDelegate {
viewModel.setTouchImageStatus()
}

func scrollViewDidZoom(_ scrollView: UIScrollView) {
guard scrollView.subviews.count > 0 else {
return
}

let subView = scrollView.subviews[0]

let offsetX: CGFloat = max((scrollView.bounds.size.width - scrollView.contentSize.width) * 0.5, 0.0)
let offsetY: CGFloat = max((scrollView.bounds.size.height - scrollView.contentSize.height) * 0.5, 0.0)

subView.center = CGPointMake(scrollView.contentSize.width * 0.5 + offsetX, scrollView.contentSize.height * 0.5 + offsetY)
}

func scrollViewDidEndDecelerating(_ scrollView: UIScrollView) {
viewModel.setBetweenOperationStatus()
}
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