GradientView.swift

import UIKit

@IBDesignable
class GradientView: RoundedView {

    @IBInspectable var from: UIColor! = UIColor.init(colorLiteralRed: 255.0/64.0, green: 255.0/164.0, blue: 255.0/196.0, alpha: 1)
    @IBInspectable var to: UIColor! = UIColor.init(colorLiteralRed: 255.0/59.0, green: 255.0/88.0, blue: 255.0/152.0, alpha: 1)
    @IBInspectable var vertical: Bool = false
    @IBInspectable var rounded: Bool = false {
        didSet {
            radius = rounded ? 3.0 : 0.0
        }
    }

    var gradient: CAGradientLayer? {
        let gradient = CAGradientLayer()
        gradient.frame = self.bounds
        gradient.colors = [from!.cgColor, to!.cgColor]
        if !vertical {
            gradient.startPoint = CGPoint(x: 0.0, y: 0.5)
            gradient.endPoint = CGPoint(x: 1.0, y: 0.5)
        }
        return gradient
    }

    override func layoutSubviews() {
        super.layoutSubviews()

        guard let gradientLayer = gradient, layer.bounds.size.height < 1000.0 else {
            return
        }

        layer.sublayers = [gradientLayer]

    }

}