Adjust settings view for iPhone X

Limelight/ViewControllers/SettingsViewController.m

@@ -14,9 +14,30 @@
 
 @implementation SettingsViewController {
     NSInteger _bitrate;
+    Boolean _adjustedForSafeArea;
 }
 static NSString* bitrateFormat = @"Bitrate: %.1f Mbps";
 
+- (void)viewDidAppear:(BOOL)animated
+{
+    [super viewDidAppear:animated];
+    
+    // Adjust the subviews for the safe area on the iPhone X.
+    if (!_adjustedForSafeArea) {
+        if (@available(iOS 11.0, *)) {
+            for (UIView* view in self.view.subviews) {
+                // HACK: The official safe area is much too large for our purposes
+                // so we'll just use the presence of any safe area to indicate we should
+                // pad by 20.
+                if (self.view.safeAreaInsets.left >= 20 || self.view.safeAreaInsets.right >= 20) {
+                    view.frame = CGRectMake(view.frame.origin.x + 20, view.frame.origin.y, view.frame.size.width, view.frame.size.height);
+                }
+            }
+        }
+
+        _adjustedForSafeArea = true;
+    }
+}
 
 - (void)viewDidLoad {
     [super viewDidLoad];