mirror of
https://github.com/Swiftgram/Telegram-iOS.git
synced 2025-06-16 05:55:20 +00:00
552 lines
21 KiB
Swift
552 lines
21 KiB
Swift
import Foundation
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import UIKit
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import Display
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import SwiftSignalKit
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import AsyncDisplayKit
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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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final class ReactionsCarouselComponent: Component {
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public typealias EnvironmentType = DemoPageEnvironment
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let context: AccountContext
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let theme: PresentationTheme
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let reactions: [AvailableReactions.Reaction]
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public init(
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context: AccountContext,
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theme: PresentationTheme,
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reactions: [AvailableReactions.Reaction]
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) {
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self.context = context
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self.theme = theme
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self.reactions = reactions
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}
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public static func ==(lhs: ReactionsCarouselComponent, rhs: ReactionsCarouselComponent) -> 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.theme !== rhs.theme {
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return false
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}
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if lhs.reactions != rhs.reactions {
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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: ReactionsCarouselComponent?
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private var node: ReactionCarouselNode?
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private var isVisible = false
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public func update(component: ReactionsCarouselComponent, 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 = ReactionCarouselNode(
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context: component.context,
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theme: component.theme,
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reactions: component.reactions
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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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self.component = component
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if let node = self.node {
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node.frame = CGRect(origin: CGPoint(x: 0.0, y: -20.0), size: availableSize)
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node.updateLayout(size: availableSize, transition: .immediate)
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}
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if isDisplaying && !self.isVisible {
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var fast = false
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if let _ = transition.userData(DemoAnimateInTransition.self) {
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fast = true
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}
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self.node?.setVisible(true, fast: fast)
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} else if !isDisplaying && self.isVisible {
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self.node?.setVisible(false)
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}
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self.isVisible = isDisplaying
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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: 110.0, height: 110.0)
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//private let order = ["👌","😍","🤡","🕊","🥱","🥴"]
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private let order = ["😍","👌","🥴","🐳","🥱","🕊","🤡"]
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private class ReactionCarouselNode: ASDisplayNode, UIScrollViewDelegate {
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private let context: AccountContext
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private let theme: PresentationTheme
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private let reactions: [AvailableReactions.Reaction]
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private var itemContainerNodes: [ASDisplayNode] = []
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private var itemNodes: [ReactionNode] = []
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private let scrollNode: ASScrollNode
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private let tapNode: ASDisplayNode
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private var standaloneReactionAnimation: StandaloneReactionAnimation?
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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, theme: PresentationTheme, reactions: [AvailableReactions.Reaction]) {
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self.context = context
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self.theme = theme
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var reactionMap: [String: AvailableReactions.Reaction] = [:]
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for reaction in reactions {
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reactionMap[reaction.value] = reaction
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}
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var sortedReactions: [AvailableReactions.Reaction] = []
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for emoji in order {
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if let reaction = reactionMap[emoji] {
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sortedReactions.append(reaction)
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}
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}
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self.reactions = sortedReactions
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self.scrollNode = ASScrollNode()
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self.tapNode = ASDisplayNode()
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self.positionDelta = 1.0 / CGFloat(self.reactions.count)
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super.init()
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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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deinit {
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self.timer?.invalidate()
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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.canCancelContentTouches = true
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self.tapNode.view.addGestureRecognizer(UITapGestureRecognizer(target: self, action: #selector(self.reactionTapped(_:))))
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}
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@objc private func reactionTapped(_ gestureRecognizer: UITapGestureRecognizer) {
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self.previousInteractionTimestamp = CACurrentMediaTime()
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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.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, playReaction: true, immediately: true, duration: 0.85)
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self.hapticFeedback.impact(.light)
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}
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func setVisible(_ visible: Bool, fast: Bool = false) {
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if visible {
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self.animateIn(fast: fast)
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} else {
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self.animator?.invalidate()
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self.animator = nil
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self.scrollTo(0, playReaction: false, immediately: false, duration: 0.0, clockwise: false)
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self.timer?.invalidate()
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self.timer = nil
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self.playingIndices.removeAll()
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self.standaloneReactionAnimation?.removeFromSupernode()
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}
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}
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func animateIn(fast: Bool) {
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let duration: Double = fast ? 1.4 : 2.2
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let delay: Double = fast ? 0.5 : 0.8
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self.scrollTo(1, playReaction: false, immediately: false, duration: duration, damping: 0.75, clockwise: true)
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Queue.mainQueue().after(delay, {
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self.playReaction(index: 1)
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})
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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.reactions.count + nextIndex
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}
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strongSelf.scrollTo(nextIndex, playReaction: true, immediately: 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 animateOut() {
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if let standaloneReactionAnimation = self.standaloneReactionAnimation {
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standaloneReactionAnimation.layer.animateAlpha(from: 1.0, to: 0.0, duration: 0.2, removeOnCompletion: false)
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}
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}
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func springCurveFunc(_ t: Double, zeta: Double) -> Double {
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let v0 = 0.0
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let omega = 20.285
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let y: Double
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if abs(zeta - 1.0) < 1e-8 {
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let c1 = -1.0
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let c2 = v0 - omega
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y = (c1 + c2 * t) * exp(-omega * t)
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} else if zeta > 1 {
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let s1 = omega * (-zeta + sqrt(zeta * zeta - 1))
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let s2 = omega * (-zeta - sqrt(zeta * zeta - 1))
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let c1 = (-s2 - v0) / (s2 - s1)
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let c2 = (s1 + v0) / (s2 - s1)
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y = c1 * exp(s1 * t) + c2 * exp(s2 * t)
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} else {
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let a = -omega * zeta
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let b = omega * sqrt(1 - zeta * zeta)
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let c2 = (v0 + a) / b
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let theta = atan(c2)
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// Alternatively y = (-cos(b * t) + c2 * sin(b * t)) * exp(a * t)
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y = sqrt(1 + c2 * c2) * exp(a * t) * cos(b * t + theta + Double.pi)
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}
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return y + 1
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}
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func scrollTo(_ index: Int, playReaction: Bool, immediately: Bool, duration: Double, damping: Double = 0.6, 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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if immediately {
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self.playReaction(index: index)
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}
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if duration.isZero {
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self.currentPosition = newPosition
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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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} else {
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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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var t = t
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if duration <= 0.2 {
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t = listViewAnimationCurveSystem(t)
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} else {
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t = self?.springCurveFunc(t, zeta: damping) ?? 0.0
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}
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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 playReaction && !immediately {
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self?.playReaction(index: nil)
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}
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})
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}
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}
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func setup() {
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for reaction in self.reactions {
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guard let centerAnimation = reaction.centerAnimation else {
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continue
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}
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guard let aroundAnimation = reaction.aroundAnimation else {
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continue
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}
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let containerNode = ASDisplayNode()
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let itemNode = ReactionNode(context: self.context, theme: self.theme, item: ReactionItem(
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reaction: ReactionItem.Reaction(rawValue: reaction.value),
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appearAnimation: reaction.appearAnimation,
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stillAnimation: reaction.selectAnimation,
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listAnimation: centerAnimation,
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largeListAnimation: reaction.activateAnimation,
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applicationAnimation: aroundAnimation,
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largeApplicationAnimation: reaction.effectAnimation
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), hasAppearAnimation: false)
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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: 5000.0 - self.scrollNode.frame.width * 0.5, y: 0.0)
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self.ignoreContentOffsetChange = false
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}
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func playReaction(index: Int?) {
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let index = index ?? max(0, Int(round(self.currentPosition / self.positionDelta)) % 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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if let current = self.standaloneReactionAnimation, let dismiss = current.currentDismissAnimation {
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dismiss()
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current.currentDismissAnimation = nil
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self.playingIndices.removeAll()
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}
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let reaction = self.reactions[index]
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let targetContainerNode = self.itemContainerNodes[index]
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let targetView = self.itemNodes[index].view
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guard let centerAnimation = reaction.centerAnimation else {
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return
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}
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guard let aroundAnimation = reaction.aroundAnimation else {
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return
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}
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self.playingIndices.insert(index)
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targetContainerNode.view.superview?.bringSubviewToFront(targetContainerNode.view)
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let standaloneReactionAnimation = StandaloneReactionAnimation()
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self.standaloneReactionAnimation = standaloneReactionAnimation
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targetContainerNode.addSubnode(standaloneReactionAnimation)
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standaloneReactionAnimation.frame = targetContainerNode.bounds
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standaloneReactionAnimation.animateReactionSelection(
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context: self.context, theme: self.theme, reaction: ReactionItem(
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reaction: ReactionItem.Reaction(rawValue: reaction.value),
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appearAnimation: reaction.appearAnimation,
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stillAnimation: reaction.selectAnimation,
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listAnimation: centerAnimation,
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largeListAnimation: reaction.activateAnimation,
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applicationAnimation: aroundAnimation,
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largeApplicationAnimation: reaction.effectAnimation
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),
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avatarPeers: [],
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playHaptic: false,
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isLarge: true,
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forceSmallEffectAnimation: true,
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targetView: targetView,
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addStandaloneReactionAnimation: nil,
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currentItemNode: self.itemNodes[index],
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completion: { [weak standaloneReactionAnimation, weak self] in
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standaloneReactionAnimation?.removeFromSupernode()
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if self?.standaloneReactionAnimation === standaloneReactionAnimation {
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self?.standaloneReactionAnimation = nil
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self?.playingIndices.remove(index)
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}
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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.x, self.currentPosition)
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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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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.x - startContentOffset
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let positionDelta = delta * -0.001
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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.x) > 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.x - startContentOffset
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let positionDelta = scrollDelta * -0.001
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let positionCounts = round(positionDelta / delta)
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let adjustedPositionDelta = delta * positionCounts
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let adjustedScrollDelta = adjustedPositionDelta * -1000.0
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targetContentOffset.pointee = CGPoint(x: startContentOffset + adjustedScrollDelta, y: 0.0)
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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)
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self.scrollTo(index, playReaction: true, immediately: true, duration: 0.2)
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}
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}
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func scrollViewDidEndDecelerating(_ scrollView: UIScrollView) {
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self.previousInteractionTimestamp = CACurrentMediaTime()
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self.resetScrollPosition()
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self.playReaction(index: nil)
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}
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func updateLayout(size: CGSize, transition: ContainedViewLayoutTransition) {
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self.validLayout = size
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self.scrollNode.frame = CGRect(origin: CGPoint(), size: size)
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if self.scrollNode.view.contentSize.width.isZero {
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self.scrollNode.view.contentSize = CGSize(width: 10000000.0, height: size.height)
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self.tapNode.frame = CGRect(origin: CGPoint(), size: self.scrollNode.view.contentSize)
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self.resetScrollPosition()
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}
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let delta = self.positionDelta
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let areaSize = CGSize(width: floor(size.width * 0.7), height: size.height * 0.44)
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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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var angle = CGFloat.pi * 0.5 + CGFloat(i) * delta * CGFloat.pi * 2.0 - self.currentPosition * CGFloat.pi * 2.0
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if angle < 0.0 {
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angle = CGFloat.pi * 2.0 + angle
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}
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if angle > CGFloat.pi * 2.0 {
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angle = angle - CGFloat.pi * 2.0
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}
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func calculateRelativeAngle(_ angle: CGFloat) -> CGFloat {
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var relativeAngle = angle - CGFloat.pi * 0.5
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if relativeAngle > CGFloat.pi {
|
|
relativeAngle = (2.0 * CGFloat.pi - relativeAngle) * -1.0
|
|
}
|
|
return relativeAngle
|
|
}
|
|
|
|
let relativeAngle = calculateRelativeAngle(angle)
|
|
let distance = abs(relativeAngle) / CGFloat.pi
|
|
|
|
let point = CGPoint(
|
|
x: cos(angle),
|
|
y: sin(angle)
|
|
)
|
|
|
|
let itemFrame = CGRect(origin: CGPoint(x: size.width * 0.5 + 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 * 0.65)
|
|
|
|
itemNode.frame = CGRect(origin: CGPoint(), size: itemFrame.size)
|
|
itemNode.updateLayout(size: itemFrame.size, isExpanded: false, largeExpanded: false, isPreviewing: false, transition: transition)
|
|
|
|
}
|
|
}
|
|
}
|