import Foundation
import UIKit

class DraggableImg: UIImageView {

    var originalPosition: CGPoint!

    override init(frame: CGRect) {
        super.init(frame: frame)
    }

    required init?(coder aDecoder: NSCoder) {
        super.init(coder: aDecoder)
    }

    override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) {
        originalPosition = self.center
    }

    override func touchesMoved(touches: Set<UITouch>, withEvent event: UIEvent?) {
        if let touch = touches.first {
            let position = touch.locationInView(self.superview)
            self.center = CGPointMake(position.x, position.y)
        }
    }

    override func touchesEnded(touches: Set<UITouch>, withEvent event: UIEvent?) {
        self.center = originalPosition
    }
}