SearchView.swift

class SearchView: UIView {

    // MARK: Properties
    
    ...
    
    struct Colors {
        static let backgroundButtonBackgroundColor = UIColor.clear
        static let backgroundButtonTintColor = #colorLiteral(red: 0.6000000238, green: 0.6000000238, blue: 0.6000000238, alpha: 1)
        static let foregroundButtonBackgroundColor = #colorLiteral(red: 1, green: 0.8, blue: 0, alpha: 1)
        static let foregroundButtonTintColor = #colorLiteral(red: 1, green: 1, blue: 1, alpha: 1)
    }
    
    let shapeLayer = CAShapeLayer()
    let backgroundButton = UIButton()
    let foregroundButton = UIButton()
        
    // MARK: Setup
    
    func setup() {
        UI: do {
            backgroundButton.setImage(UIImage(named: "search"), for: .normal)
            backgroundButton.backgroundColor = Colors.backgroundButtonBackgroundColor
            backgroundButton.tintColor = Colors.backgroundButtonTintColor
            
            foregroundButton.setImage(UIImage(named: "search"), for: .normal)
            foregroundButton.backgroundColor = Colors.foregroundButtonBackgroundColor
            foregroundButton.tintColor = Colors.foregroundButtonTintColor
        }
        layers: do {
            foregroundButton.layer.mask = shapeLayer
            foregroundButton.layer.masksToBounds = true
        }
        layout: do {
            addSubview(backgroundButton)
            addSubview(foregroundButton)
            
            backgroundButton.translatesAutoresizingMaskIntoConstraints = false
            foregroundButton.translatesAutoresizingMaskIntoConstraints = false
            
            NSLayoutConstraint.activate([
                backgroundButton.leadingAnchor.constraint(equalTo: leadingAnchor),
                backgroundButton.topAnchor.constraint(equalTo: topAnchor),
                backgroundButton.trailingAnchor.constraint(equalTo: trailingAnchor),
                backgroundButton.bottomAnchor.constraint(equalTo: bottomAnchor),
                
                foregroundButton.leftAnchor.constraint(equalTo: backgroundButton.leftAnchor),
                foregroundButton.topAnchor.constraint(equalTo: backgroundButton.topAnchor),
                foregroundButton.rightAnchor.constraint(equalTo: backgroundButton.rightAnchor),
                foregroundButton.bottomAnchor.constraint(equalTo: backgroundButton.bottomAnchor),
            ])
        }
    }
}