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Pinch
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Ali
395
submodules/ContextUI/Sources/PinchController.swift
Normal file
395
submodules/ContextUI/Sources/PinchController.swift
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import Foundation
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import UIKit
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import AsyncDisplayKit
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import Display
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import TelegramPresentationData
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import TextSelectionNode
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import ReactionSelectionNode
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import TelegramCore
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import SyncCore
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import SwiftSignalKit
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private func convertFrame(_ frame: CGRect, from fromView: UIView, to toView: UIView) -> CGRect {
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let sourceWindowFrame = fromView.convert(frame, to: nil)
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var targetWindowFrame = toView.convert(sourceWindowFrame, from: nil)
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if let fromWindow = fromView.window, let toWindow = toView.window {
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targetWindowFrame.origin.x += toWindow.bounds.width - fromWindow.bounds.width
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}
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return targetWindowFrame
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}
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final class PinchSourceGesture: UIPinchGestureRecognizer {
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private final class Target {
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var updated: (() -> Void)?
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@objc func onGesture(_ gesture: UIPinchGestureRecognizer) {
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self.updated?()
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}
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}
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private let target: Target
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private(set) var currentTransform: (CGFloat, CGPoint)?
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var began: (() -> Void)?
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var updated: ((CGFloat, CGPoint) -> Void)?
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var ended: (() -> Void)?
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private var lastLocation: CGPoint?
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private var currentOffset = CGPoint()
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init() {
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self.target = Target()
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super.init(target: self.target, action: #selector(self.target.onGesture(_:)))
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self.target.updated = { [weak self] in
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self?.gestureUpdated()
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}
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}
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override func reset() {
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super.reset()
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self.lastLocation = nil
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}
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override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent) {
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super.touchesBegan(touches, with: event)
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}
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override func touchesEnded(_ touches: Set<UITouch>, with event: UIEvent) {
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super.touchesEnded(touches, with: event)
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}
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override func touchesCancelled(_ touches: Set<UITouch>, with event: UIEvent) {
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super.touchesCancelled(touches, with: event)
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}
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override func touchesMoved(_ touches: Set<UITouch>, with event: UIEvent) {
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super.touchesMoved(touches, with: event)
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if touches.count >= 2 {
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var locationSum = CGPoint()
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for touch in touches {
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let point = touch.location(in: self.view)
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locationSum.x += point.x
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locationSum.y += point.y
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}
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locationSum.x /= CGFloat(touches.count)
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locationSum.y /= CGFloat(touches.count)
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if let lastLocation = self.lastLocation {
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self.currentOffset = CGPoint(x: locationSum.x - lastLocation.x, y: locationSum.y - lastLocation.y)
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} else {
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self.lastLocation = locationSum
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self.currentOffset = CGPoint()
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}
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if let (scale, _) = self.currentTransform {
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self.currentTransform = (scale, self.currentOffset)
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self.updated?(scale, self.currentOffset)
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}
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}
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}
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private func gestureUpdated() {
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switch self.state {
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case .began:
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self.lastLocation = nil
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self.currentOffset = CGPoint()
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self.currentTransform = nil
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self.began?()
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case .changed:
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let scale = max(1.0, self.scale)
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self.currentTransform = (scale, self.currentOffset)
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self.updated?(scale, self.currentOffset)
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case .ended, .cancelled:
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self.ended?()
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default:
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break
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}
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}
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}
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private func cancelContextGestures(node: ASDisplayNode) {
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if let node = node as? ContextControllerSourceNode {
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node.cancelGesture()
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}
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if let supernode = node.supernode {
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cancelContextGestures(node: supernode)
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}
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}
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private func cancelContextGestures(view: UIView) {
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if let gestureRecognizers = view.gestureRecognizers {
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for recognizer in gestureRecognizers {
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if let recognizer = recognizer as? InteractiveTransitionGestureRecognizer {
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recognizer.cancel()
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} else if let recognizer = recognizer as? WindowPanRecognizer {
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recognizer.cancel()
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}
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}
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}
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if let superview = view.superview {
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cancelContextGestures(view: superview)
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}
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}
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public final class PinchSourceContainerNode: ASDisplayNode {
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public let contentNode: ASDisplayNode
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public var contentRect: CGRect = CGRect()
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private(set) var naturalContentFrame: CGRect?
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fileprivate let gesture: PinchSourceGesture
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public var isPinchGestureEnabled: Bool = false {
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didSet {
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if self.isPinchGestureEnabled != oldValue {
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self.gesture.isEnabled = self.isPinchGestureEnabled
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}
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}
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}
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private var isActive: Bool = false
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public var activate: ((PinchSourceContainerNode) -> Void)?
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public var scaleUpdated: ((CGFloat, ContainedViewLayoutTransition) -> Void)?
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var deactivate: (() -> Void)?
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var updated: ((CGFloat, CGPoint) -> Void)?
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override public init() {
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self.gesture = PinchSourceGesture()
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self.contentNode = ASDisplayNode()
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super.init()
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self.addSubnode(self.contentNode)
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self.gesture.began = { [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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cancelContextGestures(node: strongSelf)
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cancelContextGestures(view: strongSelf.view)
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strongSelf.isActive = true
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strongSelf.activate?(strongSelf)
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}
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self.gesture.ended = { [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.isActive = false
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strongSelf.deactivate?()
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}
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self.gesture.updated = { [weak self] scale, offset in
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guard let strongSelf = self else {
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return
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}
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strongSelf.updated?(scale, offset)
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strongSelf.scaleUpdated?(scale, .immediate)
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}
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}
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override public func didLoad() {
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super.didLoad()
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self.view.addGestureRecognizer(self.gesture)
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self.view.disablesInteractiveTransitionGestureRecognizerNow = { [weak self] in
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guard let strongSelf = self else {
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return false
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}
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return strongSelf.isActive
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}
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}
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public func update(size: CGSize, transition: ContainedViewLayoutTransition) {
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let contentFrame = CGRect(origin: CGPoint(), size: size)
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self.naturalContentFrame = contentFrame
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if !self.isActive {
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transition.updateFrame(node: self.contentNode, frame: contentFrame)
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}
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}
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func restoreToNaturalSize() {
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guard let naturalContentFrame = self.naturalContentFrame else {
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return
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}
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self.contentNode.frame = naturalContentFrame
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}
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}
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private final class PinchControllerNode: ViewControllerTracingNode {
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private weak var controller: PinchController?
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private let sourceNode: PinchSourceContainerNode
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private let dimNode: ASDisplayNode
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private var validLayout: ContainerViewLayout?
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private var isAnimatingOut: Bool = false
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private var hapticFeedback: HapticFeedback?
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init(controller: PinchController, sourceNode: PinchSourceContainerNode) {
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self.controller = controller
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self.sourceNode = sourceNode
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self.dimNode = ASDisplayNode()
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self.dimNode.backgroundColor = UIColor(white: 0.0, alpha: 0.5)
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self.dimNode.alpha = 0.0
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super.init()
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self.addSubnode(self.dimNode)
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self.sourceNode.deactivate = { [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.controller?.dismiss()
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}
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self.sourceNode.updated = { [weak self] scale, offset in
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guard let strongSelf = self else {
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return
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}
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strongSelf.dimNode.alpha = max(0.0, min(1.0, scale - 1.0))
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strongSelf.sourceNode.contentNode.transform = CATransform3DTranslate(CATransform3DMakeScale(scale, scale, 1.0), offset.x / scale, offset.y / scale, 0.0)
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}
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}
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deinit {
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}
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override func didLoad() {
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super.didLoad()
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}
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func updateLayout(layout: ContainerViewLayout, transition: ContainedViewLayoutTransition, previousActionsContainerNode: ContextActionsContainerNode?) {
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if self.isAnimatingOut {
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return
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}
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self.validLayout = layout
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transition.updateFrame(node: self.dimNode, frame: CGRect(origin: CGPoint(), size: layout.size))
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}
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func animateIn() {
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let convertedFrame = convertFrame(self.sourceNode.contentNode.frame, from: self.sourceNode.view, to: self.view)
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self.sourceNode.contentNode.frame = convertedFrame
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self.addSubnode(self.sourceNode.contentNode)
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}
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func animateOut(completion: @escaping () -> Void) {
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let performCompletion: () -> Void = { [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.sourceNode.restoreToNaturalSize()
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strongSelf.sourceNode.addSubnode(strongSelf.sourceNode.contentNode)
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completion()
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}
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if let (scale, offset) = self.sourceNode.gesture.currentTransform {
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let duration = 0.4
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let transition: ContainedViewLayoutTransition = .animated(duration: duration, curve: .spring)
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if self.hapticFeedback == nil {
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self.hapticFeedback = HapticFeedback()
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}
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self.hapticFeedback?.prepareImpact(.light)
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Queue.mainQueue().after(0.2, { [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.hapticFeedback?.impact(.light)
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})
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self.sourceNode.scaleUpdated?(1.0, transition)
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self.sourceNode.contentNode.transform = CATransform3DIdentity
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self.sourceNode.contentNode.layer.animateSpring(from: scale as NSNumber, to: 1.0 as NSNumber, keyPath: "transform.scale", duration: duration * 1.2, damping: 110.0)
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self.sourceNode.contentNode.layer.animatePosition(from: CGPoint(x: offset.x / scale, y: offset.y / scale), to: CGPoint(), duration: duration, timingFunction: kCAMediaTimingFunctionSpring, additive: true, force: true, completion: { _ in
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performCompletion()
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})
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let dimNodeTransition: ContainedViewLayoutTransition = .animated(duration: 0.3, curve: .easeInOut)
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dimNodeTransition.updateAlpha(node: self.dimNode, alpha: 0.0)
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} else {
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performCompletion()
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}
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}
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}
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public final class PinchController: ViewController, StandalonePresentableController {
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private let _ready = Promise<Bool>()
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override public var ready: Promise<Bool> {
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return self._ready
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}
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private let sourceNode: PinchSourceContainerNode
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private var wasDismissed = false
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private var controllerNode: PinchControllerNode {
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return self.displayNode as! PinchControllerNode
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}
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public init(sourceNode: PinchSourceContainerNode) {
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self.sourceNode = sourceNode
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super.init(navigationBarPresentationData: nil)
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self.statusBar.statusBarStyle = .Ignore
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self.lockOrientation = true
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self.blocksBackgroundWhenInOverlay = true
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}
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required init(coder aDecoder: NSCoder) {
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fatalError("init(coder:) has not been implemented")
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}
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deinit {
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}
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override public func loadDisplayNode() {
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self.displayNode = PinchControllerNode(controller: self, sourceNode: self.sourceNode)
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self.displayNodeDidLoad()
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self._ready.set(.single(true))
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}
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override public func containerLayoutUpdated(_ layout: ContainerViewLayout, transition: ContainedViewLayoutTransition) {
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super.containerLayoutUpdated(layout, transition: transition)
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self.controllerNode.updateLayout(layout: layout, transition: transition, previousActionsContainerNode: nil)
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}
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override public func viewDidAppear(_ animated: Bool) {
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if self.ignoreAppearanceMethodInvocations() {
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return
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}
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super.viewDidAppear(animated)
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self.controllerNode.animateIn()
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}
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override public func dismiss(completion: (() -> Void)? = nil) {
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if !self.wasDismissed {
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self.wasDismissed = true
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self.controllerNode.animateOut(completion: { [weak self] in
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self?.presentingViewController?.dismiss(animated: false, completion: nil)
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completion?()
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})
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}
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}
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}
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