mirror of
https://github.com/Swiftgram/Telegram-iOS.git
synced 2025-06-16 05:55:20 +00:00
731 lines
28 KiB
Swift
731 lines
28 KiB
Swift
import Foundation
|
|
import UIKit
|
|
import Display
|
|
import SwiftSignalKit
|
|
import AsyncDisplayKit
|
|
import Postbox
|
|
import TelegramCore
|
|
import SyncCore
|
|
import AVFoundation
|
|
import ContextUI
|
|
import TelegramPresentationData
|
|
|
|
private final class MultiplexedVideoTrackingNode: ASDisplayNode {
|
|
var inHierarchyUpdated: ((Bool) -> Void)?
|
|
|
|
override func willEnterHierarchy() {
|
|
super.willEnterHierarchy()
|
|
|
|
self.inHierarchyUpdated?(true)
|
|
}
|
|
|
|
override func didExitHierarchy() {
|
|
super.didExitHierarchy()
|
|
|
|
self.inHierarchyUpdated?(false)
|
|
}
|
|
}
|
|
|
|
private final class VisibleVideoItem {
|
|
enum Id: Equatable, Hashable {
|
|
case saved(MediaId)
|
|
case trending(MediaId)
|
|
}
|
|
let id: Id
|
|
let file: MultiplexedVideoNodeFile
|
|
let frame: CGRect
|
|
|
|
init(file: MultiplexedVideoNodeFile, frame: CGRect, isTrending: Bool) {
|
|
self.file = file
|
|
self.frame = frame
|
|
if isTrending {
|
|
self.id = .trending(file.file.media.fileId)
|
|
} else {
|
|
self.id = .saved(file.file.media.fileId)
|
|
}
|
|
}
|
|
}
|
|
|
|
final class MultiplexedVideoNodeFile {
|
|
let file: FileMediaReference
|
|
let contextResult: (ChatContextResultCollection, ChatContextResult)?
|
|
|
|
init(file: FileMediaReference, contextResult: (ChatContextResultCollection, ChatContextResult)?) {
|
|
self.file = file
|
|
self.contextResult = contextResult
|
|
}
|
|
}
|
|
|
|
final class MultiplexedVideoNodeFiles {
|
|
let saved: [MultiplexedVideoNodeFile]
|
|
let trending: [MultiplexedVideoNodeFile]
|
|
let isSearch: Bool
|
|
|
|
init(saved: [MultiplexedVideoNodeFile], trending: [MultiplexedVideoNodeFile], isSearch: Bool) {
|
|
self.saved = saved
|
|
self.trending = trending
|
|
self.isSearch = isSearch
|
|
}
|
|
}
|
|
|
|
final class MultiplexedVideoNode: ASDisplayNode, UIScrollViewDelegate {
|
|
private let account: Account
|
|
private var theme: PresentationTheme
|
|
private var strings: PresentationStrings
|
|
private let trackingNode: MultiplexedVideoTrackingNode
|
|
var didScroll: ((CGFloat, CGFloat) -> Void)?
|
|
var didEndScrolling: (() -> Void)?
|
|
var reactionSelected: ((String) -> Void)?
|
|
|
|
var topInset: CGFloat = 0.0 {
|
|
didSet {
|
|
self.setNeedsLayout()
|
|
}
|
|
}
|
|
|
|
var bottomInset: CGFloat = 0.0 {
|
|
didSet {
|
|
self.setNeedsLayout()
|
|
}
|
|
}
|
|
|
|
var idealHeight: CGFloat = 93.0 {
|
|
didSet {
|
|
self.setNeedsLayout()
|
|
}
|
|
}
|
|
|
|
private(set) var files: MultiplexedVideoNodeFiles = MultiplexedVideoNodeFiles(saved: [], trending: [], isSearch: false)
|
|
|
|
func setFiles(files: MultiplexedVideoNodeFiles, synchronous: Bool, resetScrollingToOffset: CGFloat?) {
|
|
self.files = files
|
|
|
|
self.ignoreDidScroll = true
|
|
if let resetScrollingToOffset = resetScrollingToOffset {
|
|
self.scrollNode.view.contentOffset = CGPoint(x: 0.0, y :resetScrollingToOffset)
|
|
}
|
|
self.updateVisibleItems(extendSizeForTransition: 0.0, transition: .immediate, synchronous: synchronous)
|
|
self.ignoreDidScroll = false
|
|
}
|
|
|
|
private var displayItems: [VisibleVideoItem] = []
|
|
private var visibleThumbnailLayers: [VisibleVideoItem.Id: SoftwareVideoThumbnailLayer] = [:]
|
|
private var statusDisposable: [VisibleVideoItem.Id: MetaDisposable] = [:]
|
|
|
|
private let contextContainerNode: ContextControllerSourceNode
|
|
let scrollNode: ASScrollNode
|
|
|
|
private var visibleLayers: [VisibleVideoItem.Id: (SoftwareVideoLayerFrameManager, SampleBufferLayer)] = [:]
|
|
|
|
private let savedTitleNode: ImmediateTextNode
|
|
private let trendingTitleNode: ImmediateTextNode
|
|
|
|
private var displayLink: CADisplayLink!
|
|
private var timeOffset = 0.0
|
|
private var pauseTime = 0.0
|
|
|
|
private let timebase: CMTimebase
|
|
|
|
var fileSelected: ((MultiplexedVideoNodeFile, ASDisplayNode, CGRect) -> Void)?
|
|
var fileContextMenu: ((MultiplexedVideoNodeFile, ASDisplayNode, CGRect, ContextGesture, Bool) -> Void)?
|
|
var enableVideoNodes = false
|
|
|
|
init(account: Account, theme: PresentationTheme, strings: PresentationStrings) {
|
|
self.account = account
|
|
self.theme = theme
|
|
self.strings = strings
|
|
self.trackingNode = MultiplexedVideoTrackingNode()
|
|
self.trackingNode.isLayerBacked = true
|
|
|
|
var timebase: CMTimebase?
|
|
CMTimebaseCreateWithMasterClock(allocator: nil, masterClock: CMClockGetHostTimeClock(), timebaseOut: &timebase)
|
|
CMTimebaseSetRate(timebase!, rate: 0.0)
|
|
self.timebase = timebase!
|
|
|
|
self.contextContainerNode = ContextControllerSourceNode()
|
|
self.scrollNode = ASScrollNode()
|
|
|
|
self.savedTitleNode = ImmediateTextNode()
|
|
self.savedTitleNode.attributedText = NSAttributedString(string: strings.Chat_Gifs_SavedSectionHeader, font: Font.medium(12.0), textColor: theme.chat.inputMediaPanel.stickersSectionTextColor)
|
|
|
|
self.trendingTitleNode = ImmediateTextNode()
|
|
self.trendingTitleNode.attributedText = NSAttributedString(string: strings.Chat_Gifs_TrendingSectionHeader, font: Font.medium(12.0), textColor: theme.chat.inputMediaPanel.stickersSectionTextColor)
|
|
|
|
super.init()
|
|
|
|
self.isOpaque = true
|
|
self.scrollNode.view.showsVerticalScrollIndicator = false
|
|
self.scrollNode.view.showsHorizontalScrollIndicator = false
|
|
self.scrollNode.view.alwaysBounceVertical = true
|
|
|
|
self.scrollNode.addSubnode(self.savedTitleNode)
|
|
self.scrollNode.addSubnode(self.trendingTitleNode)
|
|
|
|
self.addSubnode(self.trackingNode)
|
|
self.addSubnode(self.contextContainerNode)
|
|
self.contextContainerNode.addSubnode(self.scrollNode)
|
|
|
|
class DisplayLinkProxy: NSObject {
|
|
weak var target: MultiplexedVideoNode?
|
|
init(target: MultiplexedVideoNode) {
|
|
self.target = target
|
|
}
|
|
|
|
@objc func displayLinkEvent() {
|
|
self.target?.displayLinkEvent()
|
|
}
|
|
}
|
|
|
|
self.displayLink = CADisplayLink(target: DisplayLinkProxy(target: self), selector: #selector(DisplayLinkProxy.displayLinkEvent))
|
|
self.displayLink.add(to: RunLoop.main, forMode: .common)
|
|
if #available(iOS 10.0, *) {
|
|
self.displayLink.preferredFramesPerSecond = 25
|
|
} else {
|
|
self.displayLink.frameInterval = 2
|
|
}
|
|
self.displayLink.isPaused = true
|
|
|
|
self.trackingNode.inHierarchyUpdated = { [weak self] value in
|
|
if let strongSelf = self {
|
|
if !value {
|
|
CMTimebaseSetRate(strongSelf.timebase, rate: 0.0)
|
|
} else {
|
|
CMTimebaseSetRate(strongSelf.timebase, rate: 1.0)
|
|
}
|
|
strongSelf.displayLink.isPaused = !value
|
|
if value && !strongSelf.enableVideoNodes {
|
|
strongSelf.enableVideoNodes = true
|
|
strongSelf.validVisibleItemsOffset = nil
|
|
strongSelf.updateImmediatelyVisibleItems()
|
|
} else if !value {
|
|
strongSelf.enableVideoNodes = false
|
|
}
|
|
}
|
|
}
|
|
|
|
self.scrollNode.view.delegate = self
|
|
|
|
let recognizer = UITapGestureRecognizer(target: self, action: #selector(self.tapGesture(_:)))
|
|
self.view.addGestureRecognizer(recognizer)
|
|
|
|
var gestureLocation: CGPoint?
|
|
|
|
self.contextContainerNode.shouldBegin = { [weak self] point in
|
|
guard let strongSelf = self else {
|
|
return false
|
|
}
|
|
gestureLocation = point
|
|
return strongSelf.fileAt(point: point) != nil
|
|
}
|
|
|
|
self.contextContainerNode.activated = { [weak self] gesture, _ in
|
|
guard let strongSelf = self, let gestureLocation = gestureLocation else {
|
|
return
|
|
}
|
|
if let (file, rect, isSaved) = strongSelf.fileAt(point: gestureLocation) {
|
|
strongSelf.fileContextMenu?(file, strongSelf, rect.offsetBy(dx: 0.0, dy: -strongSelf.scrollNode.bounds.minY), gesture, isSaved)
|
|
} else {
|
|
gesture.cancel()
|
|
}
|
|
}
|
|
|
|
self.contextContainerNode.customActivationProgress = { [weak self] progress, update in
|
|
guard let _ = self, let _ = gestureLocation else {
|
|
return
|
|
}
|
|
/*let minScale: CGFloat = (strongSelf.bounds.width - 10.0) / strongSelf.bounds.width
|
|
let currentScale = 1.0 * (1.0 - progress) + minScale * progress
|
|
switch update {
|
|
case .update:
|
|
strongSelf.layer.sublayerTransform = CATransform3DMakeScale(currentScale, currentScale, 1.0)
|
|
case .begin:
|
|
strongSelf.layer.sublayerTransform = CATransform3DMakeScale(currentScale, currentScale, 1.0)
|
|
case let .ended(previousProgress):
|
|
let previousScale = 1.0 * (1.0 - previousProgress) + minScale * previousProgress
|
|
strongSelf.layer.sublayerTransform = CATransform3DMakeScale(currentScale, currentScale, 1.0)
|
|
strongSelf.layer.animateSpring(from: previousScale as NSNumber, to: currentScale as NSNumber, keyPath: "sublayerTransform.scale", duration: 0.5, delay: 0.0, initialVelocity: 0.0, damping: 90.0)
|
|
}*/
|
|
}
|
|
}
|
|
|
|
required init?(coder aDecoder: NSCoder) {
|
|
fatalError("init(coder:) has not been implemented")
|
|
}
|
|
|
|
deinit {
|
|
self.displayLink.invalidate()
|
|
self.displayLink.isPaused = true
|
|
for(_, disposable) in self.statusDisposable {
|
|
disposable.dispose()
|
|
}
|
|
for (_, value) in self.visibleLayers {
|
|
value.1.isFreed = true
|
|
}
|
|
clearSampleBufferLayerPoll()
|
|
}
|
|
|
|
private func displayLinkEvent() {
|
|
let timestamp = CMTimebaseGetTime(self.timebase).seconds
|
|
for (_, (manager, _)) in self.visibleLayers {
|
|
manager.tick(timestamp: timestamp)
|
|
}
|
|
}
|
|
|
|
private var validSize: CGSize?
|
|
func updateLayout(theme: PresentationTheme, strings: PresentationStrings, size: CGSize, transition: ContainedViewLayoutTransition) {
|
|
self.theme = theme
|
|
self.strings = strings
|
|
if self.validSize == nil || !self.validSize!.equalTo(size) {
|
|
let previousSize = self.validSize ?? CGSize()
|
|
self.validSize = size
|
|
self.contextContainerNode.frame = CGRect(origin: CGPoint(), size: size)
|
|
transition.updateFrame(node: self.scrollNode, frame: CGRect(origin: CGPoint(), size: size))
|
|
let startTime = CFAbsoluteTimeGetCurrent()
|
|
self.updateVisibleItems(extendSizeForTransition: max(0.0, previousSize.height - size.height), transition: transition)
|
|
print("MultiplexedVideoNode layout updateVisibleItems: \((CFAbsoluteTimeGetCurrent() - startTime) * 1000.0) ms")
|
|
}
|
|
}
|
|
|
|
private var ignoreDidScroll: Bool = false
|
|
|
|
func scrollViewDidScroll(_ scrollView: UIScrollView) {
|
|
if !self.ignoreDidScroll {
|
|
self.updateImmediatelyVisibleItems()
|
|
self.didScroll?(scrollView.contentOffset.y, scrollView.contentSize.height)
|
|
}
|
|
}
|
|
|
|
func scrollViewDidEndDecelerating(_ scrollView: UIScrollView) {
|
|
self.didEndScrolling?()
|
|
}
|
|
|
|
func scrollViewDidEndDragging(_ scrollView: UIScrollView, willDecelerate decelerate: Bool) {
|
|
if !decelerate {
|
|
self.didEndScrolling?()
|
|
}
|
|
}
|
|
|
|
private var currentExtendSizeForTransition: CGFloat = 0.0
|
|
|
|
private var validVisibleItemsOffset: CGFloat?
|
|
private func updateImmediatelyVisibleItems(ensureFrames: Bool = false, synchronous: Bool = false) {
|
|
var visibleBounds = self.scrollNode.bounds
|
|
visibleBounds.size.height += max(0.0, self.currentExtendSizeForTransition)
|
|
let visibleThumbnailBounds = visibleBounds.insetBy(dx: 0.0, dy: -350.0)
|
|
|
|
if let validVisibleItemsOffset = self.validVisibleItemsOffset, validVisibleItemsOffset.isEqual(to: visibleBounds.origin.y) {
|
|
return
|
|
}
|
|
self.validVisibleItemsOffset = visibleBounds.origin.y
|
|
let minVisibleY = visibleBounds.minY
|
|
let maxVisibleY = visibleBounds.maxY
|
|
|
|
let minVisibleThumbnailY = visibleThumbnailBounds.minY
|
|
let maxVisibleThumbnailY = visibleThumbnailBounds.maxY
|
|
|
|
var visibleThumbnailIds = Set<VisibleVideoItem.Id>()
|
|
var visibleIds = Set<VisibleVideoItem.Id>()
|
|
|
|
for item in self.displayItems {
|
|
if item.frame.maxY < minVisibleThumbnailY {
|
|
continue;
|
|
}
|
|
if item.frame.minY > maxVisibleThumbnailY {
|
|
break;
|
|
}
|
|
|
|
visibleThumbnailIds.insert(item.id)
|
|
|
|
if let thumbnailLayer = self.visibleThumbnailLayers[item.id] {
|
|
if ensureFrames {
|
|
thumbnailLayer.frame = item.frame
|
|
}
|
|
} else {
|
|
let thumbnailLayer = SoftwareVideoThumbnailLayer(account: self.account, fileReference: item.file.file, synchronousLoad: synchronous)
|
|
thumbnailLayer.frame = item.frame
|
|
self.scrollNode.layer.addSublayer(thumbnailLayer)
|
|
self.visibleThumbnailLayers[item.id] = thumbnailLayer
|
|
}
|
|
|
|
if item.frame.maxY < minVisibleY {
|
|
continue
|
|
}
|
|
if item.frame.minY > maxVisibleY {
|
|
continue
|
|
}
|
|
|
|
visibleIds.insert(item.id)
|
|
|
|
if let (_, layerHolder) = self.visibleLayers[item.id] {
|
|
if ensureFrames {
|
|
layerHolder.layer.frame = item.frame
|
|
}
|
|
} else {
|
|
let layerHolder = takeSampleBufferLayer()
|
|
layerHolder.layer.videoGravity = AVLayerVideoGravity.resizeAspectFill
|
|
layerHolder.layer.frame = item.frame
|
|
self.scrollNode.layer.addSublayer(layerHolder.layer)
|
|
let manager = SoftwareVideoLayerFrameManager(account: self.account, fileReference: item.file.file, layerHolder: layerHolder)
|
|
self.visibleLayers[item.id] = (manager, layerHolder)
|
|
self.visibleThumbnailLayers[item.id]?.ready = { [weak self] in
|
|
if let strongSelf = self {
|
|
strongSelf.visibleLayers[item.id]?.0.start()
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
var removeIds: [VisibleVideoItem.Id] = []
|
|
for id in self.visibleLayers.keys {
|
|
if !visibleIds.contains(id) {
|
|
removeIds.append(id)
|
|
}
|
|
}
|
|
|
|
var removeThumbnailIds: [VisibleVideoItem.Id] = []
|
|
for id in self.visibleThumbnailLayers.keys {
|
|
if !visibleThumbnailIds.contains(id) {
|
|
removeThumbnailIds.append(id)
|
|
}
|
|
}
|
|
|
|
/*var removeProgressIds: [MediaId] = []
|
|
for id in self.visibleProgressNodes.keys {
|
|
if !visibleIds.contains(id) {
|
|
removeProgressIds.append(id)
|
|
}
|
|
}*/
|
|
|
|
for id in removeIds {
|
|
let (_, layerHolder) = self.visibleLayers[id]!
|
|
layerHolder.layer.removeFromSuperlayer()
|
|
self.visibleLayers.removeValue(forKey: id)
|
|
}
|
|
|
|
for id in removeThumbnailIds {
|
|
let thumbnailLayer = self.visibleThumbnailLayers[id]!
|
|
thumbnailLayer.removeFromSuperlayer()
|
|
self.visibleThumbnailLayers.removeValue(forKey: id)
|
|
}
|
|
|
|
/*for id in removeProgressIds {
|
|
let progressNode = self.visibleProgressNodes[id]!
|
|
progressNode.removeFromSupernode()
|
|
self.visibleProgressNodes.removeValue(forKey: id)
|
|
self.statusDisposable.removeValue(forKey: id)?.dispose()
|
|
}*/
|
|
}
|
|
|
|
private func updateVisibleItems(extendSizeForTransition: CGFloat, transition: ContainedViewLayoutTransition, synchronous: Bool = false) {
|
|
let drawableSize = self.scrollNode.bounds.size
|
|
if !drawableSize.width.isZero {
|
|
var displayItems: [VisibleVideoItem] = []
|
|
|
|
var verticalOffset: CGFloat = self.topInset
|
|
|
|
func commitFilesSpans(files: [MultiplexedVideoNodeFile], isTrending: Bool) {
|
|
var rowsCount = 0
|
|
var firstRowMax = 0;
|
|
|
|
let viewPortAvailableSize = drawableSize.width
|
|
|
|
let preferredRowSize: CGFloat = 100.0
|
|
let itemsCount = files.count
|
|
let spanCount: CGFloat = 100.0
|
|
var spanLeft = spanCount
|
|
var currentItemsInRow = 0
|
|
var currentItemsSpanAmount: CGFloat = 0.0
|
|
|
|
var itemSpans: [Int: CGFloat] = [:]
|
|
var itemsToRow: [Int: Int] = [:]
|
|
|
|
for a in 0 ..< itemsCount {
|
|
var size: CGSize
|
|
if let dimensions = files[a].file.media.dimensions {
|
|
size = dimensions.cgSize
|
|
} else {
|
|
size = CGSize(width: 100.0, height: 100.0)
|
|
}
|
|
if size.width <= 0.0 {
|
|
size.width = 100.0
|
|
}
|
|
if size.height <= 0.0 {
|
|
size.height = 100.0
|
|
}
|
|
//size = CGSize(width: 100.0, height: 100.0)
|
|
let aspect: CGFloat = size.width / size.height
|
|
if aspect > 4.0 || aspect < 0.2 {
|
|
size.width = max(size.width, size.height)
|
|
size.height = size.width
|
|
}
|
|
|
|
var requiredSpan = min(spanCount, floor(spanCount * (size.width / size.height * preferredRowSize / viewPortAvailableSize)))
|
|
let moveToNewRow = spanLeft < requiredSpan || requiredSpan > 33.0 && spanLeft < requiredSpan - 15.0
|
|
if moveToNewRow {
|
|
if spanLeft > 0 {
|
|
let spanPerItem = floor(spanLeft / CGFloat(currentItemsInRow))
|
|
|
|
let start = a - currentItemsInRow
|
|
var b = start
|
|
while b < start + currentItemsInRow {
|
|
if (b == start + currentItemsInRow - 1) {
|
|
itemSpans[b] = itemSpans[b]! + spanLeft
|
|
} else {
|
|
itemSpans[b] = itemSpans[b]! + spanPerItem
|
|
}
|
|
spanLeft -= spanPerItem;
|
|
|
|
b += 1
|
|
}
|
|
|
|
itemsToRow[a - 1] = rowsCount
|
|
}
|
|
rowsCount += 1
|
|
currentItemsSpanAmount = 0
|
|
currentItemsInRow = 0
|
|
spanLeft = spanCount
|
|
} else {
|
|
if spanLeft < requiredSpan {
|
|
requiredSpan = spanLeft
|
|
}
|
|
}
|
|
if rowsCount == 0 {
|
|
firstRowMax = max(firstRowMax, a)
|
|
}
|
|
if a == itemsCount - 1 {
|
|
itemsToRow[a] = rowsCount
|
|
}
|
|
currentItemsSpanAmount += requiredSpan
|
|
currentItemsInRow += 1
|
|
spanLeft -= requiredSpan
|
|
spanLeft = max(0, spanLeft)
|
|
|
|
itemSpans[a] = requiredSpan
|
|
}
|
|
if itemsCount != 0 {
|
|
rowsCount += 1
|
|
}
|
|
|
|
var currentRowHorizontalOffset: CGFloat = 0.0
|
|
for index in 0 ..< files.count {
|
|
guard let width = itemSpans[index] else {
|
|
continue
|
|
}
|
|
let itemWidth = floor(width * drawableSize.width / 100.0) - 1
|
|
|
|
var itemSize = CGSize(width: itemWidth, height: preferredRowSize)
|
|
if itemsToRow[index] != nil && currentRowHorizontalOffset + itemSize.width >= drawableSize.width - 10.0 {
|
|
itemSize.width = max(itemSize.width, drawableSize.width - currentRowHorizontalOffset)
|
|
}
|
|
displayItems.append(VisibleVideoItem(file: files[index], frame: CGRect(origin: CGPoint(x: currentRowHorizontalOffset, y: verticalOffset), size: itemSize), isTrending: isTrending))
|
|
currentRowHorizontalOffset += itemSize.width + 1.0
|
|
|
|
if itemsToRow[index] != nil {
|
|
verticalOffset += preferredRowSize + 1.0
|
|
currentRowHorizontalOffset = 0.0
|
|
}
|
|
}
|
|
}
|
|
|
|
var hasContent = false
|
|
if !self.files.saved.isEmpty {
|
|
self.savedTitleNode.isHidden = false
|
|
let leftInset: CGFloat = 10.0
|
|
let savedTitleSize = self.savedTitleNode.updateLayout(CGSize(width: drawableSize.width - leftInset * 2.0, height: 100.0))
|
|
self.savedTitleNode.frame = CGRect(origin: CGPoint(x: leftInset, y: verticalOffset - 3.0), size: savedTitleSize)
|
|
verticalOffset += savedTitleSize.height + 5.0
|
|
commitFilesSpans(files: self.files.saved, isTrending: false)
|
|
hasContent = true
|
|
} else {
|
|
self.savedTitleNode.isHidden = true
|
|
}
|
|
if !self.files.trending.isEmpty {
|
|
if self.files.isSearch {
|
|
self.trendingTitleNode.isHidden = true
|
|
} else {
|
|
self.trendingTitleNode.isHidden = false
|
|
if hasContent {
|
|
verticalOffset += 15.0
|
|
}
|
|
let leftInset: CGFloat = 10.0
|
|
let trendingTitleSize = self.trendingTitleNode.updateLayout(CGSize(width: drawableSize.width - leftInset * 2.0, height: 100.0))
|
|
self.trendingTitleNode.frame = CGRect(origin: CGPoint(x: leftInset, y: verticalOffset - 3.0), size: trendingTitleSize)
|
|
verticalOffset += trendingTitleSize.height + 5.0
|
|
}
|
|
commitFilesSpans(files: self.files.trending, isTrending: true)
|
|
} else {
|
|
self.trendingTitleNode.isHidden = true
|
|
}
|
|
|
|
let contentSize = CGSize(width: drawableSize.width, height: verticalOffset + self.bottomInset)
|
|
self.scrollNode.view.contentSize = contentSize
|
|
|
|
self.displayItems = displayItems
|
|
|
|
self.validVisibleItemsOffset = nil
|
|
self.currentExtendSizeForTransition = extendSizeForTransition
|
|
self.updateImmediatelyVisibleItems(ensureFrames: true, synchronous: synchronous)
|
|
|
|
transition.updateAlpha(node: scrollNode, alpha: 1.0, force: true, completion: { [weak self] _ in
|
|
guard let strongSelf = self else {
|
|
return
|
|
}
|
|
strongSelf.currentExtendSizeForTransition = 0.0
|
|
strongSelf.updateImmediatelyVisibleItems()
|
|
})
|
|
}
|
|
}
|
|
|
|
@objc func tapGesture(_ recognizer: TapLongTapOrDoubleTapGestureRecognizer) {
|
|
if case .ended = recognizer.state {
|
|
let point = recognizer.location(in: self.view)
|
|
if let (file, rect, _) = self.fileAt(point: point) {
|
|
self.fileSelected?(file, self, rect)
|
|
}
|
|
}
|
|
}
|
|
|
|
func frameForItem(_ id: MediaId) -> CGRect? {
|
|
for item in self.displayItems {
|
|
if item.file.file.media.fileId == id {
|
|
return item.frame
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func fileAt(point: CGPoint) -> (MultiplexedVideoNodeFile, CGRect, Bool)? {
|
|
let offsetPoint = point.offsetBy(dx: 0.0, dy: self.scrollNode.bounds.minY)
|
|
return self.offsetFileAt(point: offsetPoint)
|
|
}
|
|
|
|
private func offsetFileAt(point: CGPoint) -> (MultiplexedVideoNodeFile, CGRect, Bool)? {
|
|
for item in self.displayItems {
|
|
if item.frame.contains(point) {
|
|
let isSaved: Bool
|
|
switch item.id {
|
|
case .saved:
|
|
isSaved = true
|
|
case .trending:
|
|
isSaved = false
|
|
}
|
|
return (item.file, item.frame, isSaved)
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
}
|
|
|
|
private func NH_LP_TABLE_LOOKUP(_ table: inout [Int], _ i: Int, _ j: Int, _ rowsize: Int) -> Int {
|
|
return table[i * rowsize + j]
|
|
}
|
|
|
|
private func NH_LP_TABLE_LOOKUP_SET(_ table: inout [Int], _ i: Int, _ j: Int, _ rowsize: Int, _ value: Int) {
|
|
table[i * rowsize + j] = value
|
|
}
|
|
|
|
private func linearPartitionTable(_ weights: [Int], numberOfPartitions: Int) -> [Int] {
|
|
let n = weights.count
|
|
let k = numberOfPartitions
|
|
|
|
let tableSize = n * k;
|
|
var tmpTable = Array<Int>(repeatElement(0, count: tableSize))
|
|
|
|
let solutionSize = (n - 1) * (k - 1)
|
|
var solution = Array<Int>(repeatElement(0, count: solutionSize))
|
|
|
|
for i in 0 ..< n {
|
|
let offset = i != 0 ? NH_LP_TABLE_LOOKUP(&tmpTable, i - 1, 0, k) : 0
|
|
NH_LP_TABLE_LOOKUP_SET(&tmpTable, i, 0, k, Int(weights[i]) + offset)
|
|
}
|
|
|
|
for j in 0 ..< k {
|
|
NH_LP_TABLE_LOOKUP_SET(&tmpTable, 0, j, k, Int(weights[0]))
|
|
}
|
|
|
|
for i in 1 ..< n {
|
|
for j in 1 ..< k {
|
|
var currentMin = 0
|
|
var minX = Int.max
|
|
|
|
for x in 0 ..< i {
|
|
let c1 = NH_LP_TABLE_LOOKUP(&tmpTable, x, j - 1, k)
|
|
let c2 = NH_LP_TABLE_LOOKUP(&tmpTable, i, 0, k) - NH_LP_TABLE_LOOKUP(&tmpTable, x, 0, k)
|
|
let cost = max(c1, c2)
|
|
|
|
if x == 0 || cost < currentMin {
|
|
currentMin = cost;
|
|
minX = x
|
|
}
|
|
}
|
|
|
|
NH_LP_TABLE_LOOKUP_SET(&tmpTable, i, j, k, currentMin)
|
|
NH_LP_TABLE_LOOKUP_SET(&solution, i - 1, j - 1, k - 1, minX)
|
|
}
|
|
}
|
|
|
|
return solution
|
|
}
|
|
|
|
private func linearPartitionForWeights(_ weights: [Int], numberOfPartitions: Int) -> [[Int]] {
|
|
var n = weights.count
|
|
var k = numberOfPartitions
|
|
|
|
if k <= 0 {
|
|
return []
|
|
}
|
|
|
|
if k >= n {
|
|
var partition: [[Int]] = []
|
|
for weight in weights {
|
|
partition.append([weight])
|
|
}
|
|
return partition
|
|
}
|
|
|
|
if n == 1 {
|
|
return [weights]
|
|
}
|
|
|
|
var solution = linearPartitionTable(weights, numberOfPartitions: numberOfPartitions)
|
|
let solutionRowSize = numberOfPartitions - 1
|
|
|
|
k = k - 2;
|
|
n = n - 1;
|
|
|
|
var answer: [[Int]] = []
|
|
|
|
while k >= 0 {
|
|
if n < 1 {
|
|
answer.insert([], at: 0)
|
|
} else {
|
|
var currentAnswer: [Int] = []
|
|
|
|
var i = NH_LP_TABLE_LOOKUP(&solution, n - 1, k, solutionRowSize) + 1
|
|
let range = n + 1
|
|
while i < range {
|
|
currentAnswer.append(weights[i])
|
|
i += 1
|
|
}
|
|
|
|
answer.insert(currentAnswer, at: 0)
|
|
|
|
n = NH_LP_TABLE_LOOKUP(&solution, n - 1, k, solutionRowSize)
|
|
}
|
|
|
|
k = k - 1
|
|
}
|
|
|
|
var currentAnswer: [Int] = []
|
|
var i = 0
|
|
let range = n + 1
|
|
while i < range {
|
|
currentAnswer.append(weights[i])
|
|
i += 1
|
|
}
|
|
|
|
answer.insert(currentAnswer, at: 0)
|
|
|
|
return answer
|
|
}
|