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https://github.com/Swiftgram/Telegram-iOS.git
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351 lines
17 KiB
Swift
351 lines
17 KiB
Swift
import Foundation
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import AsyncDisplayKit
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import Display
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import Postbox
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class GalleryControllerNode: ASDisplayNode, UIScrollViewDelegate, UIGestureRecognizerDelegate {
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var statusBar: StatusBar?
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var navigationBar: NavigationBar?
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let footerNode: GalleryFooterNode
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var currentThumbnailContainerNode: GalleryThumbnailContainerNode?
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var toolbarNode: ASDisplayNode?
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var transitionDataForCentralItem: (() -> ((ASDisplayNode, () -> UIView?)?, (UIView) -> Void)?)?
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var dismiss: (() -> Void)?
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var containerLayout: (CGFloat, ContainerViewLayout)?
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var backgroundNode: ASDisplayNode
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var scrollView: UIScrollView
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var pager: GalleryPagerNode
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var beginCustomDismiss: () -> Void = { }
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var completeCustomDismiss: () -> Void = { }
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var baseNavigationController: () -> NavigationController? = { return nil }
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private var presentationState = GalleryControllerPresentationState()
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var areControlsHidden = false
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var isBackgroundExtendedOverNavigationBar = true {
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didSet {
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if let (navigationBarHeight, layout) = self.containerLayout {
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self.backgroundNode.frame = CGRect(origin: CGPoint(x: 0.0, y: self.isBackgroundExtendedOverNavigationBar ? 0.0 : navigationBarHeight), size: CGSize(width: layout.size.width, height: layout.size.height - (self.isBackgroundExtendedOverNavigationBar ? 0.0 : navigationBarHeight)))
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}
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}
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}
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init(controllerInteraction: GalleryControllerInteraction, pageGap: CGFloat = 20.0) {
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self.backgroundNode = ASDisplayNode()
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self.backgroundNode.backgroundColor = UIColor.black
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self.scrollView = UIScrollView()
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self.scrollView.delaysContentTouches = false
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if #available(iOSApplicationExtension 11.0, *) {
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self.scrollView.contentInsetAdjustmentBehavior = .never
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}
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self.pager = GalleryPagerNode(pageGap: pageGap)
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self.footerNode = GalleryFooterNode(controllerInteraction: controllerInteraction)
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super.init()
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self.setViewBlock({
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return UITracingLayerView()
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})
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self.pager.toggleControlsVisibility = { [weak self] in
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if let strongSelf = self {
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strongSelf.setControlsHidden(!strongSelf.areControlsHidden, animated: true)
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}
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}
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self.pager.beginCustomDismiss = { [weak self] in
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if let strongSelf = self {
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strongSelf.beginCustomDismiss()
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}
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}
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self.pager.completeCustomDismiss = { [weak self] in
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if let strongSelf = self {
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strongSelf.completeCustomDismiss()
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}
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}
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self.pager.baseNavigationController = { [weak self] in
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return self?.baseNavigationController()
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}
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self.addSubnode(self.backgroundNode)
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self.scrollView.showsVerticalScrollIndicator = false
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self.scrollView.showsHorizontalScrollIndicator = false
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self.scrollView.alwaysBounceHorizontal = false
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self.scrollView.alwaysBounceVertical = false
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self.scrollView.clipsToBounds = false
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self.scrollView.delegate = self
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self.scrollView.scrollsToTop = false
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self.view.addSubview(self.scrollView)
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self.scrollView.addSubview(self.pager.view)
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self.addSubnode(self.footerNode)
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self.pager.centralItemIndexOffsetUpdated = { [weak self] indexAndProgress in
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if let strongSelf = self {
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var node: GalleryThumbnailContainerNode?
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if let (index, progress) = indexAndProgress {
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if let (centralId, centralItem) = strongSelf.pager.items[index].thumbnailItem() {
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var items: [GalleryThumbnailItem] = [centralItem]
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for i in (0 ..< index).reversed() {
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if let (id, item) = strongSelf.pager.items[i].thumbnailItem(), id == centralId {
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items.insert(item, at: 0)
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} else {
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break
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}
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}
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for i in (index + 1) ..< strongSelf.pager.items.count {
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if let (id, item) = strongSelf.pager.items[i].thumbnailItem(), id == centralId {
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items.append(item)
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} else {
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break
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}
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}
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let convertedIndex = (items.index(where: { $0.isEqual(to: centralItem) })!, progress)
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if strongSelf.currentThumbnailContainerNode?.groupId != centralId {
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node = GalleryThumbnailContainerNode(groupId: centralId)
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node?.updateItems(items, centralIndex: convertedIndex.0, progress: convertedIndex.1)
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} else {
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node = strongSelf.currentThumbnailContainerNode
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node?.updateItems(items, centralIndex: convertedIndex.0, progress: convertedIndex.1)
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}
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}
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}
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if node !== strongSelf.currentThumbnailContainerNode {
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if let current = strongSelf.currentThumbnailContainerNode {
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current.layer.animateAlpha(from: 1.0, to: 0.0, duration: 0.2, removeOnCompletion: false, completion: { [weak current] _ in
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current?.removeFromSupernode()
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})
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}
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strongSelf.currentThumbnailContainerNode = node
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if let node = node {
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strongSelf.insertSubnode(node, aboveSubnode: strongSelf.footerNode)
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if let (navigationHeight, layout) = strongSelf.containerLayout {
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strongSelf.containerLayoutUpdated(layout, navigationBarHeight: navigationHeight, transition: .immediate)
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node.layer.animateAlpha(from: 0.0, to: 1.0, duration: 0.2)
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}
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}
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}
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}
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}
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}
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override func didLoad() {
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super.didLoad()
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/*let recognizer = SwipeToDismissGestureRecognizer(target: self, action: #selector(self.panGesture(_:)))
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recognizer.delegate = self
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self.view.addGestureRecognizer(recognizer)*/
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}
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func containerLayoutUpdated(_ layout: ContainerViewLayout, navigationBarHeight: CGFloat, transition: ContainedViewLayoutTransition) {
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self.containerLayout = (navigationBarHeight, layout)
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transition.updateFrame(node: self.backgroundNode, frame: CGRect(origin: CGPoint(x: 0.0, y: self.isBackgroundExtendedOverNavigationBar ? 0.0 : navigationBarHeight), size: CGSize(width: layout.size.width, height: layout.size.height - (self.isBackgroundExtendedOverNavigationBar ? 0.0 : navigationBarHeight))))
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transition.updateFrame(node: self.footerNode, frame: CGRect(origin: CGPoint(), size: layout.size))
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var thumbnailPanelHeight: CGFloat = 0.0
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if let currentThumbnailContainerNode = self.currentThumbnailContainerNode {
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thumbnailPanelHeight = 40.0
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let thumbnailsFrame = CGRect(origin: CGPoint(x: 0.0, y: layout.size.height - 40.0 - thumbnailPanelHeight + 4.0), size: CGSize(width: layout.size.width, height: thumbnailPanelHeight - 4.0))
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transition.updateFrame(node: currentThumbnailContainerNode, frame: thumbnailsFrame)
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currentThumbnailContainerNode.updateLayout(size: thumbnailsFrame.size, transition: transition)
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}
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self.footerNode.updateLayout(layout, footerContentNode: self.presentationState.footerContentNode, thumbnailPanelHeight: thumbnailPanelHeight, transition: transition)
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let previousContentHeight = self.scrollView.contentSize.height
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let previousVerticalOffset = self.scrollView.contentOffset.y
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self.scrollView.frame = CGRect(origin: CGPoint(), size: layout.size)
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self.scrollView.contentSize = CGSize(width: 0.0, height: layout.size.height * 3.0)
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if previousContentHeight.isEqual(to: 0.0) {
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self.scrollView.contentOffset = CGPoint(x: 0.0, y: self.scrollView.contentSize.height / 3.0)
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} else {
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self.scrollView.contentOffset = CGPoint(x: 0.0, y: previousVerticalOffset * self.scrollView.contentSize.height / previousContentHeight)
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}
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self.pager.frame = CGRect(origin: CGPoint(x: 0.0, y: layout.size.height), size: layout.size)
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self.pager.containerLayoutUpdated(layout, navigationBarHeight: navigationBarHeight, transition: transition)
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}
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func setControlsHidden(_ hidden: Bool, animated: Bool) {
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self.areControlsHidden = hidden
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if animated {
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UIView.animate(withDuration: 0.3, animations: {
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let alpha: CGFloat = self.areControlsHidden ? 0.0 : 1.0
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self.navigationBar?.alpha = alpha
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self.statusBar?.alpha = alpha
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self.footerNode.alpha = alpha
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self.currentThumbnailContainerNode?.alpha = alpha
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})
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} else {
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let alpha: CGFloat = self.areControlsHidden ? 0.0 : 1.0
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self.navigationBar?.alpha = alpha
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self.statusBar?.alpha = alpha
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self.footerNode.alpha = alpha
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self.currentThumbnailContainerNode?.alpha = alpha
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}
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}
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func animateIn(animateContent: Bool) {
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self.backgroundNode.backgroundColor = self.backgroundNode.backgroundColor?.withAlphaComponent(0.0)
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self.statusBar?.alpha = 0.0
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self.navigationBar?.alpha = 0.0
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self.footerNode.alpha = 0.0
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self.currentThumbnailContainerNode?.alpha = 0.0
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UIView.animate(withDuration: 0.2, animations: {
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self.backgroundNode.backgroundColor = self.backgroundNode.backgroundColor?.withAlphaComponent(1.0)
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self.statusBar?.alpha = 1.0
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self.navigationBar?.alpha = 1.0
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self.footerNode.alpha = 1.0
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self.currentThumbnailContainerNode?.alpha = 1.0
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})
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if let toolbarNode = self.toolbarNode {
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toolbarNode.layer.animatePosition(from: CGPoint(x: 0.0, y: self.bounds.size.height), to: CGPoint(), duration: 0.4, timingFunction: kCAMediaTimingFunctionSpring, additive: true)
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}
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if animateContent {
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self.scrollView.layer.animateBounds(from: self.scrollView.layer.bounds.offsetBy(dx: 0.0, dy: -self.scrollView.layer.bounds.size.height), to: self.scrollView.layer.bounds, duration: 0.4, timingFunction: kCAMediaTimingFunctionSpring)
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}
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}
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func animateOut(animateContent: Bool, completion: @escaping () -> Void) {
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var contentAnimationCompleted = true
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var interfaceAnimationCompleted = false
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let intermediateCompletion = {
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if contentAnimationCompleted && interfaceAnimationCompleted {
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completion()
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}
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}
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if let backgroundColor = self.backgroundNode.backgroundColor {
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let updatedColor = backgroundColor.withAlphaComponent(0.0)
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self.backgroundNode.backgroundColor = updatedColor
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self.backgroundNode.layer.animate(from: backgroundColor.cgColor, to: updatedColor.cgColor, keyPath: "backgroundColor", timingFunction: kCAMediaTimingFunctionLinear, duration: 0.15)
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}
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UIView.animate(withDuration: 0.25, animations: {
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self.statusBar?.alpha = 0.0
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self.navigationBar?.alpha = 0.0
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self.footerNode.alpha = 0.0
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self.currentThumbnailContainerNode?.alpha = 0.0
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}, completion: { _ in
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interfaceAnimationCompleted = true
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intermediateCompletion()
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})
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if let toolbarNode = self.toolbarNode {
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toolbarNode.layer.animatePosition(from: CGPoint(), to: CGPoint(x: 0.0, y: self.bounds.size.height), duration: 0.25, timingFunction: kCAMediaTimingFunctionLinear, removeOnCompletion: false, additive: true)
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}
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if animateContent {
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contentAnimationCompleted = false
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self.scrollView.layer.animateBounds(from: self.scrollView.layer.bounds, to: self.scrollView.layer.bounds.offsetBy(dx: 0.0, dy: -self.scrollView.layer.bounds.size.height), duration: 0.25, timingFunction: kCAMediaTimingFunctionLinear, removeOnCompletion: false, completion: { _ in
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contentAnimationCompleted = true
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intermediateCompletion()
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})
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}
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}
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func updateDismissTransition(_ value: CGFloat) {
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}
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func scrollViewDidScroll(_ scrollView: UIScrollView) {
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let distanceFromEquilibrium = scrollView.contentOffset.y - scrollView.contentSize.height / 3.0
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let transition = 1.0 - min(1.0, max(0.0, abs(distanceFromEquilibrium) / 50.0))
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let backgroundTransition = 1.0 - min(1.0, max(0.0, abs(distanceFromEquilibrium) / 80.0))
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self.backgroundNode.backgroundColor = self.backgroundNode.backgroundColor?.withAlphaComponent(backgroundTransition)
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if !self.areControlsHidden {
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self.statusBar?.alpha = transition
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self.navigationBar?.alpha = transition
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self.footerNode.alpha = transition
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self.currentThumbnailContainerNode?.alpha = transition
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}
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self.updateDismissTransition(transition)
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if let toolbarNode = toolbarNode {
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toolbarNode.layer.position = CGPoint(x: toolbarNode.layer.position.x, y: self.bounds.size.height - toolbarNode.bounds.size.height / 2.0 + (1.0 - transition) * toolbarNode.bounds.size.height)
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}
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}
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func scrollViewWillEndDragging(_ scrollView: UIScrollView, withVelocity velocity: CGPoint, targetContentOffset: UnsafeMutablePointer<CGPoint>) {
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targetContentOffset.pointee = scrollView.contentOffset
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if abs(velocity.y) > 1.0 {
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if let backgroundColor = self.backgroundNode.backgroundColor {
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self.backgroundNode.layer.animate(from: backgroundColor, to: UIColor(white: 0.0, alpha: 0.0).cgColor, keyPath: "backgroundColor", timingFunction: kCAMediaTimingFunctionLinear, duration: 0.2, removeOnCompletion: false)
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}
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var interfaceAnimationCompleted = false
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var contentAnimationCompleted = true
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let completion = { [weak self] in
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if interfaceAnimationCompleted && contentAnimationCompleted {
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if let dismiss = self?.dismiss {
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dismiss()
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}
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}
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}
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if let centralItemNode = self.pager.centralItemNode(), let (transitionNodeForCentralItem, addToTransitionSurface) = self.transitionDataForCentralItem?(), let node = transitionNodeForCentralItem {
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contentAnimationCompleted = false
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centralItemNode.animateOut(to: node, addToTransitionSurface: addToTransitionSurface, completion: {
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contentAnimationCompleted = true
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completion()
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})
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}
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self.animateOut(animateContent: false, completion: {
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interfaceAnimationCompleted = true
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completion()
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})
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if contentAnimationCompleted {
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contentAnimationCompleted = false
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self.scrollView.layer.animateBounds(from: self.scrollView.layer.bounds, to: self.scrollView.layer.bounds.offsetBy(dx: 0.0, dy: self.scrollView.layer.bounds.size.height * (velocity.y < 0.0 ? -1.0 : 1.0)), duration: 0.2, timingFunction: kCAMediaTimingFunctionLinear, removeOnCompletion: false, completion: { _ in
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contentAnimationCompleted = true
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completion()
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})
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}
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} else {
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self.scrollView.setContentOffset(CGPoint(x: 0.0, y: self.scrollView.contentSize.height / 3.0), animated: true)
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}
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}
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func updatePresentationState(_ f: (GalleryControllerPresentationState) -> GalleryControllerPresentationState, transition: ContainedViewLayoutTransition) {
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self.presentationState = f(self.presentationState)
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if let (navigationBarHeight, layout) = self.containerLayout {
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self.containerLayoutUpdated(layout, navigationBarHeight: navigationBarHeight, transition: transition)
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}
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}
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@objc func panGesture(_ recognizer: SwipeToDismissGestureRecognizer) {
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switch recognizer.state {
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case .began:
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break
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case .changed:
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break
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case .ended:
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break
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case .cancelled:
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break
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default:
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break
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}
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}
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}
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