 import UIKit
 
 @IBDesignable class GradientView: UIView {
-   
+    
     private var gradientLayer: CAGradientLayer!
     
     @IBInspectable var topColor: UIColor = .red {

    }
    
    override func layoutSubviews() {
        self.gradientLayer = self.layer as! CAGradientLayer
        self.gradientLayer.colors = [topColor.cgColor, bottomColor.cgColor]
        self.gradientLayer.startPoint = CGPoint(x: startPointX, y: startPointY)
        self.gradientLayer.endPoint = CGPoint(x: endPointX, y: endPointY)

        animation.toValue = toColors
        animation.duration = duration
        animation.isRemovedOnCompletion = true
        animation.fillMode = .forwards
        animation.timingFunction = CAMediaTimingFunction(name: CAMediaTimingFunctionName.linear)
        self.gradientLayer?.add(animation, forKey:"animateGradient")
    }
}
