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Improve voice chat scrolling

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This commit is contained in:
Ilya Laktyushin
2020-12-23 15:24:37 +04:00
parent dbf5a5691f
commit e46c8645eb
8 changed files with 44 additions and 18 deletions
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17
submodules/TelegramCallsUI/Sources/VoiceChatController.swift
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@@ -2079,6 +2079,7 @@ public final class VoiceChatController: ViewController {
private var panGestureArguments: (topInset: CGFloat, offset: CGFloat)?
@objc func panGesture(_ recognizer: UIPanGestureRecognizer) {
let contentOffset = self.listNode.visibleContentOffset()
switch recognizer.state {
case .began:
let topInset: CGFloat
@@ -2096,7 +2097,8 @@ public final class VoiceChatController: ViewController {
if let (currentTopInset, currentPanOffset) = self.panGestureArguments {
topInset = currentTopInset
if case let .known(value) = self.listNode.visibleContentOffset(), value > 0 {
if case let .known(value) = contentOffset, value <= 0.5 {
} else {
translation = currentPanOffset
if self.isExpanded {
recognizer.setTranslation(CGPoint(), in: self.contentContainer.view)
@@ -2114,7 +2116,6 @@ public final class VoiceChatController: ViewController {
}
if self.isExpanded {
} else {
if currentOffset > 0.0 {
self.listNode.scroller.panGestureRecognizer.setTranslation(CGPoint(), in: self.listNode.scroller)
@@ -2136,7 +2137,9 @@ public final class VoiceChatController: ViewController {
let translation = recognizer.translation(in: self.contentContainer.view)
var velocity = recognizer.velocity(in: self.contentContainer.view)
if case let .known(value) = self.listNode.visibleContentOffset(), value > 0 {
if case let .known(value) = contentOffset, value > 0.0 {
velocity = CGPoint()
} else if case .unknown = contentOffset {
velocity = CGPoint()
}
@@ -2164,6 +2167,7 @@ public final class VoiceChatController: ViewController {
self.isExpanded = false
self.updateIsFullscreen(false)
self.animatingExpansion = true
self.listNode.scroller.setContentOffset(CGPoint(), animated: false)
if let (layout, navigationHeight) = self.validLayout {
self.containerLayoutUpdated(layout, navigationHeight: navigationHeight, transition: .animated(duration: 0.3, curve: .easeInOut))
@@ -2193,6 +2197,12 @@ public final class VoiceChatController: ViewController {
self.updateIsFullscreen(true)
self.animatingExpansion = true
if velocity.y > -1500.0 {
DispatchQueue.main.async {
self.listNode.transaction(deleteIndices: [], insertIndicesAndItems: [], updateIndicesAndItems: [], options: [.Synchronous, .LowLatency], scrollToItem: ListViewScrollToItem(index: 0, position: .top(0.0), animated: true, curve: .Default(duration: nil), directionHint: .Up), updateSizeAndInsets: nil, stationaryItemRange: nil, updateOpaqueState: nil, completion: { _ in })
}
}
if let (layout, navigationHeight) = self.validLayout {
self.containerLayoutUpdated(layout, navigationHeight: navigationHeight, transition: .animated(duration: 0.3, curve: .easeInOut))
}
@@ -2202,6 +2212,7 @@ public final class VoiceChatController: ViewController {
} else {
self.updateIsFullscreen(false)
self.animatingExpansion = true
self.listNode.scroller.setContentOffset(CGPoint(), animated: false)
if let (layout, navigationHeight) = self.validLayout {
self.containerLayoutUpdated(layout, navigationHeight: navigationHeight, transition: .animated(duration: 0.3, curve: .easeInOut))