Layout Services

AMLayout.swift

//
//  LayoutServices.swift
//  AMLayout
//
//  Created by Anirudha on 10/10/17.
//  Copyright © 2017 Anirudha Mahale. All rights reserved.
//

import UIKit

class AMLayout {
    static private let designedOnSize = CGSize(width: 375, height: 667)
    static private let currentScreenSize = UIScreen.main.bounds.size
    
    
    /// Use this method to adjust Font Size.
    ///
    /// - Parameter constant: CGFloat
    /// - Returns: Font size
    static func getVerticleCostraintValueFrom(_ constant: CGFloat) -> CGFloat {
        return (AMLayout.currentScreenSize.height/AMLayout.designedOnSize.height)*constant
    }
    
    private static func reconfigureVerticleConstraints(_ constraints: [NSLayoutConstraint]) {
        for constraint in constraints {
            constraint.constant = AMLayout.getVerticleCostraintValueFrom(constraint.constant)
        }
    }
    
    // Width
    static func getHorizontalCostraintValueFrom(_ constant: CGFloat) -> CGFloat {
        return (AMLayout.currentScreenSize.height/AMLayout.designedOnSize.height)*constant
    }
    
    private static func reconfigureHorizontalConstraints(_ constraints: [NSLayoutConstraint]) {
        for constraint in constraints {
            constraint.constant = AMLayout.getHorizontalCostraintValueFrom(constraint.constant)
        }
    }
    
    static func configureConstraints(_ vertical: [NSLayoutConstraint]?, horizontal: [NSLayoutConstraint]?) {
        if let vertical = vertical {
            AMLayout.reconfigureVerticleConstraints(vertical)
        }
        
        if let horizontal = horizontal {
            AMLayout.reconfigureHorizontalConstraints(horizontal)
        }
    }
    
    static private func configureTheConstraint(constraints: [NSLayoutConstraint]) {
        for constraint in constraints {
            if constraint.firstAttribute == .height {
                constraint.constant = AMLayout.getHorizontalCostraintValueFrom(constraint.constant)
            } else if constraint.firstAttribute == .width {
                constraint.constant = AMLayout.getVerticleCostraintValueFrom(constraint.constant)
            }
        }
    }
    
    static func configureConstraintOf(_ views: [Any]) {
        for view in views {
            if let button = view as? UIButton {
                configureTheConstraint(constraints: button.constraints)
                continue
            }
            
            if let imageView = view as? UIImageView {
                configureTheConstraint(constraints: imageView.constraints)
                continue
            }
            
            if let textField = view as? UITextField {
                configureTheConstraint(constraints: textField.constraints)
                continue
            }
            
            if let textView = view as? UITextView {
                configureTheConstraint(constraints: textView.constraints)
                continue
            }
            
            if let baseView = view as? UIView {
                configureTheConstraint(constraints: baseView.constraints)
                continue
            }
        }
    }
    
    static func configureFontSize(_ views: [Any]) {
        for view in views {
            if let label = view as? UILabel {
                label.font = label.font.withSize(AMLayout.getVerticleCostraintValueFrom(label.font.pointSize))
                continue
            }
            
            if let textField = view as? UITextField {
                textField.font = textField.font?.withSize(AMLayout.getVerticleCostraintValueFrom(textField.font!.pointSize))
                continue
            }
            
            if let textView = view as? UITextView {
                textView.font = textView.font?.withSize(AMLayout.getVerticleCostraintValueFrom(textView.font!.pointSize))
                continue
            }
            
            if let button = view as? UIButton {
                button.titleLabel?.font = button.titleLabel?.font.withSize(AMLayout.getVerticleCostraintValueFrom(button.titleLabel!.font.pointSize))
                continue
            }
        }
    }
}