aybekckaya

import UIKit

class ChronometerVC: UIViewController {
    private var displayLink:DisplayLink?
    
    private let pulsatingLayer:CAShapeLayer = {
        let path = UIBezierPath(arcCenter: .zero, radius: 100, startAngle: 0, endAngle: CGFloat.pi * 2, clockwise: true)
        let layer = CAShapeLayer()
        layer.path = path.cgPath
        layer.strokeColor = UIColor.clear.cgColor

aybekckaya

class ChronometerVC: UIViewController {
    private var displayLink:DisplayLink?
     
    private let lblCounter:UILabel = {
        let lbl = UILabel()
        lbl.font = UIFont(name: "Verdana", size: 28)
        lbl.textAlignment = NSTextAlignment.center
        lbl.textColor = UIColor.black
        return lbl
    }()

aybekckaya

import UIKit

class DisplayLink: NSObject {

    private var displayLink:CADisplayLink!
    private var startTime:CFTimeInterval = CACurrentMediaTime()
    
    var displayLinkUpdated:((_ timeElapsed:CFTimeInterval)->())?
    
    override init() {

aybekckaya

class PerformanceVC: UIViewController {

    @IBOutlet weak var lblFramesPerSecond: UILabel!
    @IBOutlet weak var lblTimeDifference: UILabel!
    @IBOutlet weak var lblElapsedTime: UILabel!
    @IBOutlet weak var lblActualFrames: UILabel!
    
    private var latestTimeUpdated:CFTimeInterval = CACurrentMediaTime()
    private var startedTime:CFTimeInterval = CACurrentMediaTime()
    

aybekckaya

var displayLink:CADisplayLink!

func setUpDisplayLink() {
    displayLink = CADisplayLink(target: self, selector: #selector(update))
    displayLink.preferredFramesPerSecond = 60 // (optional) if you do not define , then device uses maxFramesPS
    displayLink.add(to: .main, forMode: RunLoop.Mode.common)
 }

@objc private func update() { 
  print("refresh : \(CACurrentMediaTime())")

aybekckaya

enum LikeGestureStatus {
    case unknown
    case fail
    case success
}

class LikeGestureRecognizer:UIGestureRecognizer {
    private var lastTouchTime:CFTimeInterval = CACurrentMediaTime()
    private(set) var status = LikeGestureStatus.unknown
    private(set) var doubleTapGestureThreshold:CFTimeInterval = 0.25

aybekckaya

class LikeGestureRecognizer:UIGestureRecognizer {
   
    override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent) {
        super.touchesBegan(touches, with: event)
        self.state = .began
    }
    
    override func touchesMoved(_ touches: Set<UITouch>, with event: UIEvent) {
        super.touchesMoved(touches, with: event)
        self.state = .changed

aybekckaya

 
override func viewDidLoad() {
   super.viewDidLoad()
   let likeGesture = LikeGestureRecognizer(target: self, action: #selector(handleLikeGesture(gesture:)))
   self.viewGesture.addGestureRecognizer(likeGesture)
 }

 @objc private func handleLikeGesture(gesture:LikeGestureRecognizer) {
        print("I never be called. You have to implement gesture recognizer's state setters")
 }

aybekckaya

class LikeGestureRecognizer:UIGestureRecognizer {
  
    override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent) {
        super.touchesBegan(touches, with: event)
    }
    
    override func touchesMoved(_ touches: Set<UITouch>, with event: UIEvent) {
        super.touchesMoved(touches, with: event)
    }
    

aybekckaya

class TapGestureReplicator:UIGestureRecognizer {
    
    override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent) {
        // Checking the count of touches . 
        // If number of finger used in gesture is not equal to one , then gesture should fail.
        guard touches.count == 1 , let _ = touches.first else {
            self.state = .failed
            return
        }
        self.state = .began