Merge pull request #37 from wallacesky/j-1.2.3

Support iPhone X navigation bar

Author: m1entus

INSPhotoGallery/INSPhotosOverlayView.swift

@@ -166,7 +166,12 @@ open class INSPhotosOverlayView: UIView , INSPhotosOverlayViewable {
         navigationBar.items = [navigationItem]
         addSubview(navigationBar)
 
-        let topConstraint = NSLayoutConstraint(item: navigationBar, attribute: .top, relatedBy: .equal, toItem: self, attribute: .top, multiplier: 1.0, constant: 0.0)
+        let topConstraint: NSLayoutConstraint
+        if #available(iOS 11.0, *) {
+            topConstraint = NSLayoutConstraint(item: navigationBar, attribute: .top, relatedBy: .equal, toItem: self.safeAreaLayoutGuide, attribute: .top, multiplier: 1.0, constant: 0.0)
+        } else {
+            topConstraint = NSLayoutConstraint(item: navigationBar, attribute: .top, relatedBy: .equal, toItem: self, attribute: .top, multiplier: 1.0, constant: 0.0)
+        }
         let widthConstraint = NSLayoutConstraint(item: navigationBar, attribute: .width, relatedBy: .equal, toItem: self, attribute: .width, multiplier: 1.0, constant: 0.0)
         let horizontalPositionConstraint = NSLayoutConstraint(item: navigationBar, attribute: .centerX, relatedBy: .equal, toItem: self, attribute: .centerX, multiplier: 1.0, constant: 0.0)
         self.addConstraints([topConstraint,widthConstraint,horizontalPositionConstraint])