iOS/WolneLektury/Extensions/UIView+Ext.swift

   1 //
   2 //  UIView+Ext.swift
   3 //  WolneLektury
   4 //
   5 //  Created by Pawel Dabrowski on 30/05/2018.
   6 //  Copyright © 2018 Fundacja Nowoczesna Polska. All rights reserved.
   7 //
   8
   9 import Foundation
  10
  11 import UIKit
  12
  13 extension UIView{
  14     func addConstraintsFllingContainer(toView: UIView){
  15
  16         toView.translatesAutoresizingMaskIntoConstraints = false
  17         let viewsDictionary:[String: AnyObject] = ["toView": toView]
  18
  19         addConstraints(NSLayoutConstraint.constraints(withVisualFormat: "V:|[toView]|", options: [], metrics: nil, views: viewsDictionary))
  20         addConstraints(NSLayoutConstraint.constraints(withVisualFormat: "H:|[toView]|", options: [], metrics: nil, views: viewsDictionary))
  21     }
  22
  23     func centerInSuperview() {
  24         self.centerHorizontallyInSuperview()
  25         self.centerVerticallyInSuperview()
  26     }
  27
  28     func addConstraingWidth(width: CGFloat){
  29         let c: NSLayoutConstraint = NSLayoutConstraint(item: self, attribute: .width, relatedBy: .equal, toItem: nil, attribute: .notAnAttribute, multiplier: 1, constant: width)
  30         addConstraint(c)
  31     }
  32
  33     func centerHorizontallyInSuperview(){
  34         let c: NSLayoutConstraint = NSLayoutConstraint(item: self, attribute: .centerX, relatedBy: .equal, toItem: self.superview, attribute: .centerX, multiplier: 1, constant: 0)
  35         self.superview?.addConstraint(c)
  36     }
  37
  38     func centerVerticallyInSuperview(){
  39         let c: NSLayoutConstraint = NSLayoutConstraint(item: self, attribute: .centerY, relatedBy: .equal, toItem: self.superview, attribute: .centerY, multiplier: 1, constant: 0)
  40         self.superview?.addConstraint(c)
  41     }
  42
  43     func addDropShadow(height: CGFloat = 2, radius: CGFloat = 3) {
  44         layer.masksToBounds = false
  45         layer.shadowColor = UIColor.black.cgColor
  46         layer.shadowOffset = CGSize(width: 0, height: height)
  47         layer.shadowOpacity = 0.2
  48         layer.shadowRadius = radius
  49     }
  50
  51     func rotate(angle: Double) {
  52         let radians = angle / 180.0 * Double.pi
  53         let rotation = CGAffineTransform.init(rotationAngle:CGFloat(radians))// CGAffineTransformRotate(self.transform, CGFloat(radians));
  54         self.transform = rotation
  55     }
  56 }