import MLscrollruler

class ViewController:UIViewController,RulerDelegate{

}

func setupRuler(ruler: ScrollFrame, figure: Double) {
//you can get value when you scrolling
print("\(figure)")
}

func setup(){
//customize frame x, y and width
let centerX = view.frame.width / 2
let ruler = ScrollFrame(frame: CGRect(x: (centerX - 150), y: 120, width: 300, height: 100))
ruler.delegate = self
//customize 
ruler.scrollView.backgroundColor = .lightGray
ruler.middleLine.backgroundColor = .red
ruler.rulerLine.strokeColor = UIColor.black.cgColor
view.addSubview(ruler)
}

override func viewDidLoad() {
super.viewDidLoad()
setup()
}