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Update offset animation

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This commit is contained in:
Ali 2019-12-18 17:13:44 +04:00
parent 0f2e9e955c
commit 62296c85ff
1 changed files with 19 additions and 16 deletions
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35
submodules/StickerPackPreviewUI/Sources/StickerPackScreen.swift
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@ -161,24 +161,27 @@ private final class StickerPackContainer: ASDisplayNode {
guard let strongSelf = self, !strongSelf.isDismissed else {
return
}
let contentOffset = targetOffset
let insets = strongSelf.gridNode.scrollView.contentInset
var modalProgress: CGFloat = 0.0
if contentOffset.y < 0.0 && contentOffset.y >= -insets.top {
if contentOffset.y > -insets.top / 2.0 || velocity.y <= -100.0 {
strongSelf.gridNode.scrollView.setContentOffset(CGPoint(x: 0.0, y: 0.0), animated: true)
DispatchQueue.main.async {
let contentOffset = targetOffset
let insets = strongSelf.gridNode.scrollView.contentInset
var modalProgress: CGFloat = 0.0
if contentOffset.y < 0.0 && contentOffset.y >= -insets.top {
strongSelf.gridNode.scrollView.stopScrollingAnimation()
if contentOffset.y > -insets.top / 2.0 || velocity.y <= -100.0 {
strongSelf.gridNode.scrollView.setContentOffset(CGPoint(x: 0.0, y: 0.0), animated: true)
modalProgress = 1.0
} else {
strongSelf.gridNode.scrollView.setContentOffset(CGPoint(x: 0.0, y: -insets.top), animated: true)
}
} else if contentOffset.y >= 0.0 {
modalProgress = 1.0
} else {
strongSelf.gridNode.scrollView.setContentOffset(CGPoint(x: 0.0, y: -insets.top), animated: true)
}
} else if contentOffset.y >= 0.0 {
modalProgress = 1.0
}
if abs(strongSelf.modalProgress - modalProgress) > CGFloat.ulpOfOne {
strongSelf.modalProgress = modalProgress
strongSelf.expandProgressUpdated(strongSelf, .animated(duration: 0.4, curve: .spring))
if abs(strongSelf.modalProgress - modalProgress) > CGFloat.ulpOfOne {
strongSelf.modalProgress = modalProgress
strongSelf.expandProgressUpdated(strongSelf, .animated(duration: 0.4, curve: .spring))
}
}
}