mirror of
https://github.com/Swiftgram/Telegram-iOS.git
synced 2025-06-16 05:55:20 +00:00
605 lines
23 KiB
Swift
605 lines
23 KiB
Swift
import Foundation
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import UIKit
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import Display
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import AsyncDisplayKit
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import SwiftSignalKit
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import ComponentFlow
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import TelegramCore
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import AccountContext
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import ReactionSelectionNode
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import TelegramPresentationData
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import AccountContext
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import AnimatedStickerNode
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import TelegramAnimatedStickerNode
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import ShimmerEffect
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final class StickersCarouselComponent: Component {
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public typealias EnvironmentType = DemoPageEnvironment
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let context: AccountContext
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let stickers: [TelegramMediaFile]
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public init(
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context: AccountContext,
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stickers: [TelegramMediaFile]
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) {
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self.context = context
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self.stickers = stickers
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}
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public static func ==(lhs: StickersCarouselComponent, rhs: StickersCarouselComponent) -> Bool {
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if lhs.context !== rhs.context {
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return false
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}
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if lhs.stickers != rhs.stickers {
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return false
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}
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return true
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}
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public final class View: UIView {
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private var component: StickersCarouselComponent?
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private var node: StickersCarouselNode?
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public func update(component: StickersCarouselComponent, availableSize: CGSize, environment: Environment<DemoPageEnvironment>, transition: Transition) -> CGSize {
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let isDisplaying = environment[DemoPageEnvironment.self].isDisplaying
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if self.node == nil {
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let node = StickersCarouselNode(
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context: component.context,
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stickers: component.stickers
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)
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self.node = node
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self.addSubnode(node)
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}
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let isFirstTime = self.component == nil
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self.component = component
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if let node = self.node {
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node.setVisible(isDisplaying)
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node.frame = CGRect(origin: .zero, size: availableSize)
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node.updateLayout(size: availableSize, transition: .immediate)
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}
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if isFirstTime {
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self.node?.animateIn()
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}
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return availableSize
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}
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}
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public func makeView() -> View {
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return View()
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}
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public func update(view: View, availableSize: CGSize, state: EmptyComponentState, environment: Environment<DemoPageEnvironment>, transition: Transition) -> CGSize {
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return view.update(component: self, availableSize: availableSize, environment: environment, transition: transition)
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}
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}
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private let itemSize = CGSize(width: 220.0, height: 220.0)
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private class StickerNode: ASDisplayNode {
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private let context: AccountContext
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private let file: TelegramMediaFile
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public var imageNode: TransformImageNode
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public var animationNode: AnimatedStickerNode?
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public var additionalAnimationNode: AnimatedStickerNode?
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private var placeholderNode: StickerShimmerEffectNode
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private let disposable = MetaDisposable()
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private let effectDisposable = MetaDisposable()
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private var setupTimestamp: Double?
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init(context: AccountContext, file: TelegramMediaFile) {
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self.context = context
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self.file = file
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self.imageNode = TransformImageNode()
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if file.isPremiumSticker {
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let animationNode = AnimatedStickerNode()
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self.animationNode = animationNode
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let dimensions = file.dimensions ?? PixelDimensions(width: 512, height: 512)
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let fittedDimensions = dimensions.cgSize.aspectFitted(CGSize(width: 400.0, height: 400.0))
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let pathPrefix = context.account.postbox.mediaBox.shortLivedResourceCachePathPrefix(file.resource.id)
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animationNode.setup(source: AnimatedStickerResourceSource(account: self.context.account, resource: file.resource, isVideo: file.isVideoSticker), width: Int(fittedDimensions.width), height: Int(fittedDimensions.height), playbackMode: .loop, mode: .direct(cachePathPrefix: pathPrefix))
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self.disposable.set(freeMediaFileResourceInteractiveFetched(account: self.context.account, fileReference: .standalone(media: file), resource: file.resource).start())
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if let effect = file.videoThumbnails.first {
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self.effectDisposable.set(freeMediaFileResourceInteractiveFetched(account: self.context.account, fileReference: .standalone(media: file), resource: effect.resource).start())
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let source = AnimatedStickerResourceSource(account: self.context.account, resource: effect.resource, fitzModifier: nil)
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let additionalAnimationNode = AnimatedStickerNode()
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let pathPrefix = context.account.postbox.mediaBox.shortLivedResourceCachePathPrefix(effect.resource.id)
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additionalAnimationNode.setup(source: source, width: Int(fittedDimensions.width * 2.0), height: Int(fittedDimensions.height * 2.0), playbackMode: .loop, mode: .direct(cachePathPrefix: pathPrefix))
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self.additionalAnimationNode = additionalAnimationNode
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}
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} else {
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self.animationNode = nil
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}
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self.placeholderNode = StickerShimmerEffectNode()
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super.init()
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self.isUserInteractionEnabled = false
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if let animationNode = self.animationNode {
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self.addSubnode(animationNode)
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} else {
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self.addSubnode(self.imageNode)
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}
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if let additionalAnimationNode = self.additionalAnimationNode {
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self.addSubnode(additionalAnimationNode)
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}
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self.addSubnode(self.placeholderNode)
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var firstTime = true
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self.imageNode.imageUpdated = { [weak self] image in
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guard let strongSelf = self else {
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return
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}
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if image != nil {
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strongSelf.removePlaceholder(animated: !firstTime)
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}
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firstTime = false
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}
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if let animationNode = self.animationNode {
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animationNode.started = { [weak self] in
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guard let strongSelf = self else {
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return
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}
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strongSelf.imageNode.alpha = 0.0
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let current = CACurrentMediaTime()
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if let setupTimestamp = strongSelf.setupTimestamp, current - setupTimestamp > 0.3 {
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if !strongSelf.placeholderNode.alpha.isZero {
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strongSelf.removePlaceholder(animated: true)
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}
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} else {
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strongSelf.removePlaceholder(animated: false)
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}
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}
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}
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}
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deinit {
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self.disposable.dispose()
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self.effectDisposable.dispose()
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}
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private func removePlaceholder(animated: Bool) {
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if !animated {
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self.placeholderNode.removeFromSupernode()
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} else {
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self.placeholderNode.alpha = 0.0
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self.placeholderNode.layer.animateAlpha(from: 1.0, to: 0.0, duration: 0.2, completion: { [weak self] _ in
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self?.placeholderNode.removeFromSupernode()
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})
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}
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}
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private var visibility: Bool = false
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private var centrality: Bool = false
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public func setCentral(_ central: Bool) {
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self.centrality = central
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self.updatePlayback()
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}
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public func setVisible(_ visible: Bool) {
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self.visibility = visible
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self.updatePlayback()
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self.setupTimestamp = CACurrentMediaTime()
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}
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func updateAbsoluteRect(_ rect: CGRect, within containerSize: CGSize) {
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self.placeholderNode.updateAbsoluteRect(rect, within: containerSize)
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}
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private func updatePlayback() {
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self.animationNode?.visibility = self.visibility
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if let additionalAnimationNode = self.additionalAnimationNode {
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let wasVisible = additionalAnimationNode.visibility
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let isVisible = self.visibility && self.centrality
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if wasVisible && !isVisible {
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additionalAnimationNode.alpha = 0.0
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additionalAnimationNode.layer.animateAlpha(from: 1.0, to: 0.0, duration: 0.2, completion: { [weak additionalAnimationNode] _ in
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additionalAnimationNode?.visibility = isVisible
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})
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} else if isVisible {
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additionalAnimationNode.visibility = isVisible
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if !wasVisible {
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additionalAnimationNode.play(fromIndex: 0)
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Queue.mainQueue().after(0.05, {
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additionalAnimationNode.alpha = 1.0
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})
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}
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}
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}
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}
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public func updateLayout(size: CGSize, transition: ContainedViewLayoutTransition) {
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let boundingSize = CGSize(width: 240.0, height: 240.0)
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if let dimensitons = self.file.dimensions {
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let imageSize = dimensitons.cgSize.aspectFitted(boundingSize)
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self.imageNode.asyncLayout()(TransformImageArguments(corners: ImageCorners(), imageSize: imageSize, boundingSize: imageSize, intrinsicInsets: UIEdgeInsets()))()
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let imageFrame = CGRect(origin: CGPoint(x: floor((size.width - imageSize.width) / 2.0), y: 0.0), size: imageSize)
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self.imageNode.frame = imageFrame
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if let animationNode = self.animationNode {
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animationNode.frame = imageFrame
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animationNode.updateLayout(size: imageSize)
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if let additionalAnimationNode = self.additionalAnimationNode {
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additionalAnimationNode.frame = imageFrame.offsetBy(dx: -imageFrame.width * 0.245 + 21, dy: -1.0).insetBy(dx: -imageFrame.width * 0.245, dy: -imageFrame.height * 0.245)
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additionalAnimationNode.updateLayout(size: additionalAnimationNode.frame.size)
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}
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}
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let placeholderFrame = CGRect(origin: .zero, size: size)
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let thumbnailDimensions = PixelDimensions(width: 512, height: 512)
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self.placeholderNode.update(backgroundColor: nil, foregroundColor: UIColor(rgb: 0xffffff, alpha: 0.2), shimmeringColor: UIColor(rgb: 0xffffff, alpha: 0.3), data: self.file.immediateThumbnailData, size: placeholderFrame.size, imageSize: thumbnailDimensions.cgSize)
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self.placeholderNode.frame = placeholderFrame
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}
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}
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}
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private class StickersCarouselNode: ASDisplayNode, UIScrollViewDelegate {
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private let context: AccountContext
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private let stickers: [TelegramMediaFile]
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private var itemContainerNodes: [ASDisplayNode] = []
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private var itemNodes: [StickerNode] = []
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private let scrollNode: ASScrollNode
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private let tapNode: ASDisplayNode
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private var animator: DisplayLinkAnimator?
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private var currentPosition: CGFloat = 0.0
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private var currentIndex: Int = 0
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private var validLayout: CGSize?
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private var playingIndices = Set<Int>()
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private let positionDelta: Double
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private var previousInteractionTimestamp: Double = 0.0
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private var timer: SwiftSignalKit.Timer?
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init(context: AccountContext, stickers: [TelegramMediaFile]) {
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self.context = context
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self.stickers = stickers
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self.scrollNode = ASScrollNode()
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self.tapNode = ASDisplayNode()
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self.positionDelta = 1.0 / CGFloat(self.stickers.count)
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super.init()
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self.clipsToBounds = true
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self.addSubnode(self.scrollNode)
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self.scrollNode.addSubnode(self.tapNode)
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self.setup()
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}
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override func didLoad() {
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super.didLoad()
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self.scrollNode.view.delegate = self
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self.scrollNode.view.showsHorizontalScrollIndicator = false
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self.scrollNode.view.showsVerticalScrollIndicator = false
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self.scrollNode.view.canCancelContentTouches = true
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self.tapNode.view.addGestureRecognizer(UITapGestureRecognizer(target: self, action: #selector(self.stickerTapped(_:))))
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}
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@objc private func stickerTapped(_ gestureRecognizer: UITapGestureRecognizer) {
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self.previousInteractionTimestamp = CACurrentMediaTime()
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guard self.animator == nil, self.scrollStartPosition == nil else {
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return
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}
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let point = gestureRecognizer.location(in: self.view)
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guard let index = self.itemContainerNodes.firstIndex(where: { $0.frame.contains(point) }) else {
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return
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}
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self.scrollTo(index, playAnimation: true, duration: 0.4)
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}
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func animateIn() {
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self.scrollTo(1, playAnimation: true, duration: 0.5, clockwise: true)
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if self.timer == nil {
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self.previousInteractionTimestamp = CACurrentMediaTime()
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self.timer = SwiftSignalKit.Timer(timeout: 1.0, repeat: true, completion: { [weak self] in
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if let strongSelf = self {
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let currentTimestamp = CACurrentMediaTime()
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if currentTimestamp > strongSelf.previousInteractionTimestamp + 4.0 {
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var nextIndex = strongSelf.currentIndex - 1
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if nextIndex < 0 {
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nextIndex = strongSelf.stickers.count + nextIndex
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}
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strongSelf.scrollTo(nextIndex, playAnimation: true, duration: 0.85, clockwise: true)
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strongSelf.previousInteractionTimestamp = currentTimestamp
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}
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}
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}, queue: Queue.mainQueue())
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self.timer?.start()
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}
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}
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func scrollTo(_ index: Int, playAnimation: Bool, duration: Double, clockwise: Bool? = nil) {
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guard index >= 0 && index < self.itemNodes.count else {
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return
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}
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self.currentIndex = index
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let delta = self.positionDelta
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let startPosition = self.currentPosition
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let newPosition = delta * CGFloat(index)
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var change = newPosition - startPosition
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if let clockwise = clockwise {
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if clockwise {
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if change > 0.0 {
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change = change - 1.0
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}
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} else {
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if change < 0.0 {
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change = 1.0 + change
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}
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}
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} else {
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if change > 0.5 {
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change = change - 1.0
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} else if change < -0.5 {
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change = 1.0 + change
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}
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}
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self.animator = DisplayLinkAnimator(duration: duration * UIView.animationDurationFactor(), from: 0.0, to: 1.0, update: { [weak self] t in
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let t = listViewAnimationCurveSystem(t)
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var updatedPosition = startPosition + change * t
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while updatedPosition >= 1.0 {
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updatedPosition -= 1.0
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}
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while updatedPosition < 0.0 {
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updatedPosition += 1.0
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}
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self?.currentPosition = updatedPosition
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if let size = self?.validLayout {
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self?.updateLayout(size: size, transition: .immediate)
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}
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}, completion: { [weak self] in
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self?.animator = nil
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if playAnimation {
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self?.playSelectedSticker()
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}
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})
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}
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private var visibility = false
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func setVisible(_ visible: Bool) {
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guard self.visibility != visible else {
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return
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}
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self.visibility = visible
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if let size = self.validLayout {
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self.updateLayout(size: size, transition: .immediate)
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}
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}
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func setup() {
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for sticker in self.stickers {
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let containerNode = ASDisplayNode()
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let itemNode = StickerNode(context: self.context, file: sticker)
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containerNode.isUserInteractionEnabled = false
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containerNode.addSubnode(itemNode)
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self.addSubnode(containerNode)
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self.itemContainerNodes.append(containerNode)
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self.itemNodes.append(itemNode)
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}
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}
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private var ignoreContentOffsetChange = false
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private func resetScrollPosition() {
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self.scrollStartPosition = nil
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self.ignoreContentOffsetChange = true
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self.scrollNode.view.contentOffset = CGPoint(x: 0.0, y: 5000.0 - self.scrollNode.frame.height * 0.5)
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self.ignoreContentOffsetChange = false
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}
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func playSelectedSticker() {
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let delta = self.positionDelta
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let index = max(0, Int(round(self.currentPosition / delta)) % self.itemNodes.count)
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guard !self.playingIndices.contains(index) else {
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return
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}
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for i in 0 ..< self.itemNodes.count {
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let itemNode = self.itemNodes[i]
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let containerNode = self.itemContainerNodes[i]
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let isCentral = i == index
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itemNode.setCentral(isCentral)
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if !isCentral {
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itemNode.setVisible(false)
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}
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if isCentral {
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containerNode.view.superview?.bringSubviewToFront(containerNode.view)
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}
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}
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}
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private var scrollStartPosition: (contentOffset: CGFloat, position: CGFloat)?
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func scrollViewWillBeginDragging(_ scrollView: UIScrollView) {
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if self.scrollStartPosition == nil {
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self.scrollStartPosition = (scrollView.contentOffset.y, self.currentPosition)
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}
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for itemNode in self.itemNodes {
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itemNode.setCentral(false)
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}
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}
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private let hapticFeedback = HapticFeedback()
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func scrollViewDidScroll(_ scrollView: UIScrollView) {
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if scrollView.isTracking {
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self.previousInteractionTimestamp = CACurrentMediaTime()
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}
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if let animator = self.animator {
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animator.invalidate()
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self.animator = nil
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}
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guard !self.ignoreContentOffsetChange, let (startContentOffset, startPosition) = self.scrollStartPosition else {
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return
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}
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let delta = scrollView.contentOffset.y - startContentOffset
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let positionDelta = delta * 0.0005
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var updatedPosition = startPosition + positionDelta
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while updatedPosition >= 1.0 {
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updatedPosition -= 1.0
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}
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while updatedPosition < 0.0 {
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updatedPosition += 1.0
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}
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self.currentPosition = updatedPosition
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let indexDelta = self.positionDelta
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let index = max(0, Int(round(self.currentPosition / indexDelta)) % self.itemNodes.count)
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if index != self.currentIndex {
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self.currentIndex = index
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if self.scrollNode.view.isTracking || self.scrollNode.view.isDecelerating {
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self.hapticFeedback.tap()
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}
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}
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if let size = self.validLayout {
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self.updateLayout(size: size, transition: .immediate)
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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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guard let (startContentOffset, _) = self.scrollStartPosition, abs(velocity.y) > 0.0 else {
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return
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}
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let delta = self.positionDelta
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let scrollDelta = targetContentOffset.pointee.y - startContentOffset
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let positionDelta = scrollDelta * 0.0005
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let positionCounts = round(positionDelta / delta)
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let adjustedPositionDelta = delta * positionCounts
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let adjustedScrollDelta = adjustedPositionDelta * 2000.0
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targetContentOffset.pointee = CGPoint(x: 0.0, y: startContentOffset + adjustedScrollDelta)
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}
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func scrollViewDidEndDragging(_ scrollView: UIScrollView, willDecelerate decelerate: Bool) {
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if !decelerate {
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self.previousInteractionTimestamp = CACurrentMediaTime()
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self.resetScrollPosition()
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let delta = self.positionDelta
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let index = max(0, Int(round(self.currentPosition / delta)) % self.itemNodes.count)
|
|
self.scrollTo(index, playAnimation: true, duration: 0.2)
|
|
}
|
|
}
|
|
|
|
func scrollViewDidEndDecelerating(_ scrollView: UIScrollView) {
|
|
self.previousInteractionTimestamp = CACurrentMediaTime()
|
|
|
|
self.resetScrollPosition()
|
|
self.playSelectedSticker()
|
|
}
|
|
|
|
func updateLayout(size: CGSize, transition: ContainedViewLayoutTransition) {
|
|
self.validLayout = size
|
|
|
|
self.scrollNode.frame = CGRect(origin: CGPoint(), size: size)
|
|
if self.scrollNode.view.contentSize.width.isZero {
|
|
self.scrollNode.view.contentSize = CGSize(width: size.width, height: 10000000.0)
|
|
self.tapNode.frame = CGRect(origin: CGPoint(), size: self.scrollNode.view.contentSize)
|
|
self.resetScrollPosition()
|
|
}
|
|
|
|
let delta = self.positionDelta
|
|
|
|
let bounds = CGRect(origin: .zero, size: size)
|
|
let areaSize = CGSize(width: floor(size.width * 4.0), height: size.height * 2.2)
|
|
|
|
var visibleCount = 0
|
|
for i in 0 ..< self.itemNodes.count {
|
|
let itemNode = self.itemNodes[i]
|
|
let containerNode = self.itemContainerNodes[i]
|
|
|
|
var angle = CGFloat.pi * 0.5 + CGFloat(i) * delta * CGFloat.pi * 2.0 - self.currentPosition * CGFloat.pi * 2.0 - CGFloat.pi * 0.5
|
|
if angle < 0.0 {
|
|
angle = CGFloat.pi * 2.0 + angle
|
|
}
|
|
if angle > CGFloat.pi * 2.0 {
|
|
angle = angle - CGFloat.pi * 2.0
|
|
}
|
|
|
|
func calculateRelativeAngle(_ angle: CGFloat) -> CGFloat {
|
|
var relativeAngle = angle
|
|
if relativeAngle > CGFloat.pi {
|
|
relativeAngle = (2.0 * CGFloat.pi - relativeAngle) * -1.0
|
|
}
|
|
return relativeAngle
|
|
}
|
|
|
|
let relativeAngle = calculateRelativeAngle(angle)
|
|
let distance = abs(relativeAngle)
|
|
|
|
let point = CGPoint(
|
|
x: cos(angle),
|
|
y: sin(angle)
|
|
)
|
|
|
|
let itemFrame = CGRect(origin: CGPoint(x: -size.width - 0.5 * itemSize.width - 30.0 + point.x * areaSize.width * 0.5 - itemSize.width * 0.5, y: size.height * 0.5 + point.y * areaSize.height * 0.5 - itemSize.height * 0.5), size: itemSize)
|
|
containerNode.bounds = CGRect(origin: CGPoint(), size: itemFrame.size)
|
|
containerNode.position = CGPoint(x: itemFrame.midX, y: itemFrame.midY)
|
|
transition.updateTransformScale(node: containerNode, scale: 1.0 - distance * 0.75)
|
|
transition.updateAlpha(node: containerNode, alpha: 1.0 - distance * 0.6)
|
|
itemNode.updateAbsoluteRect(itemFrame, within: size)
|
|
|
|
let isVisible = self.visibility && itemFrame.intersects(bounds)
|
|
itemNode.setVisible(isVisible)
|
|
if isVisible {
|
|
visibleCount += 1
|
|
}
|
|
|
|
itemNode.frame = CGRect(origin: CGPoint(), size: itemFrame.size)
|
|
itemNode.updateLayout(size: itemFrame.size, transition: transition)
|
|
}
|
|
}
|
|
}
|