Merge pull request #13 from mvolpato/master

Addresses XCode warnings and issue #10

Great, thanks @mvolpato ! 👍

Examples/NavigationTransitionsExample/Transition/Transition/InteractiveZoomTransitionController.swift

@@ -66,12 +66,19 @@ extension InteractiveZoomTransitionController : SharedElementProvider {
 
         let initialFrame: CGRect
         let targetFrame: CGRect
+
+        // Get top margin, depending on possible safe area
+        var yMargin = CollectionViewController.margin
+
+        if #available(iOS 11.0, *) {
+            yMargin += toViewController.collectionView.safeAreaInsets.top
+        }
 
         if isPresenting {
             initialFrame = fromViewController.targetFrame
-            targetFrame = CGRect(origin: CGPoint(x: CollectionViewController.margin, y: CollectionViewController.margin), size: header.image.frame.size)
+            targetFrame = CGRect(origin: CGPoint(x: CollectionViewController.margin, y: yMargin), size: header.image.frame.size)
         } else {
-            initialFrame = CGRect(origin: CGPoint(x: CollectionViewController.margin, y: CollectionViewController.margin), size: header.image.frame.size)
+            initialFrame = CGRect(origin: CGPoint(x: CollectionViewController.margin, y: yMargin), size: header.image.frame.size)
             targetFrame = toViewController.targetFrame
         }
 

Transition/Classes/Helpers/AnimationRange+Helpers.swift

@@ -29,40 +29,40 @@ public enum AnimationRangePosition {
 }
 
 public extension AnimationRangePosition {
-    public var reversed: AnimationRangePosition {
+    var reversed: AnimationRangePosition {
         switch self {
         case .contains: return .contains
         case .isBefore: return .isAfter
         case .isAfter: return .isBefore
         }
     }
-    public func reversed(_ shouldReverse: Bool) -> AnimationRangePosition {
+    func reversed(_ shouldReverse: Bool) -> AnimationRangePosition {
         return shouldReverse ? reversed : self
     }
 }
 
 
 public extension AnimationRange {
 
-    public var length: AnimationFraction {
+    var length: AnimationFraction {
         return end - start
     }
 
     /// Returns true if the range contains the fraction
-    public func contains(_ fraction: AnimationFraction) -> Bool {
+    func contains(_ fraction: AnimationFraction) -> Bool {
         return position(fraction) == .contains
     }
     /// Returns true if the range is positioned before the fraction
-    public func isBefore(_ fraction: AnimationFraction) -> Bool {
+    func isBefore(_ fraction: AnimationFraction) -> Bool {
         return position(fraction) == .isBefore
     }
     /// Returns true if the range is positioned after the fraction
-    public func isAfter(_ fraction: AnimationFraction) -> Bool {
+    func isAfter(_ fraction: AnimationFraction) -> Bool {
         return position(fraction) == .isAfter
     }
 
     /// Returns the position of the range relative to the given fraction
-    public func position(_ fraction: AnimationFraction) -> AnimationRangePosition {
+    func position(_ fraction: AnimationFraction) -> AnimationRangePosition {
 
         if end < fraction {
             return .isBefore
@@ -75,7 +75,7 @@ public extension AnimationRange {
 
     /// Returns the distance (either measured from end or start, if the range is before or after respectively) relative to the fraction.
     /// Returns 0 if the range contains the fraction
-    public func distance(to fraction: AnimationFraction) -> AnimationFraction {
+    func distance(to fraction: AnimationFraction) -> AnimationFraction {
         switch position(fraction) {
         case .isBefore: return fraction - end
         case .isAfter: return start - fraction
@@ -87,7 +87,7 @@ public extension AnimationRange {
     /// If the position is before `fraction`, it'll return 1.
     /// If the position is after `fraction`, it'll return 0.
     /// Otherwise it maps fraction to the range.
-    public func relativeFractionComplete(to fraction: AnimationFraction) -> AnimationFraction {
+    func relativeFractionComplete(to fraction: AnimationFraction) -> AnimationFraction {
         switch position(fraction) {
         case .isBefore: return 1.0
         case .isAfter: return 0.0

Transition/Classes/Helpers/UIViewControllerContextTransitioning+Properties.swift

@@ -33,15 +33,15 @@ public extension UIViewControllerContextTransitioning {
      one presenting the "to” view controller or is the one being replaced by the "to” 
      view controller.
     */
-    public var fromViewController: UIViewController! {
+    var fromViewController: UIViewController! {
         return self.viewController(forKey: .from)
     }
 
     /**
      Identifies the view controller that is visible at the end of a completed transition.
      This view controller is the one being presented.
     */
-    public var toViewController: UIViewController! {
+    var toViewController: UIViewController! {
         return self.viewController(forKey: .to)
     }
 
@@ -50,15 +50,15 @@ public extension UIViewControllerContextTransitioning {
      Identifies the view that is shown at the beginning of the transition (and at the end
      of a canceled transition). This view is typically the presenting view controller’s view.
     */
-    public var fromView: UIView! {
+    var fromView: UIView! {
         return self.view(forKey: .from) ?? fromViewController.view
     }
 
     /**
      Identifies the view that is shown at the end of a completed transition. This view is 
      typically the presented view controller’s view but may also be an ancestor of that view.
     */
-    public var toView: UIView! {
+    var toView: UIView! {
         return self.view(forKey: .to) ?? toViewController.view
     }
 }
@@ -70,7 +70,7 @@ public extension UIViewControllerContextTransitioning {
         This installs the to and from view when necessary, based on the operation.
         It returns the top-most view which is either the fromView or toView.
      */
-    @discardableResult public func defaultViewSetup(for operation: TransitionOperation) -> UIView? {
+    @discardableResult func defaultViewSetup(for operation: TransitionOperation) -> UIView? {
         switch operation {
         case .navigation(let navigationOperation):  return defaultViewSetup(for: navigationOperation)
         case .modal(let modalOperation):            return defaultViewSetup(for: modalOperation)
@@ -79,7 +79,7 @@ public extension UIViewControllerContextTransitioning {
         }
     }
 
-    public func defaultViewSetup(for navigationOperation: UINavigationController.Operation) -> UIView? {
+    func defaultViewSetup(for navigationOperation: UINavigationController.Operation) -> UIView? {
         switch navigationOperation {
         case .push:
             containerView.addSubview(toView)
@@ -93,7 +93,7 @@ public extension UIViewControllerContextTransitioning {
         return navigationOperation == .push ? toView : fromView
     }
 
-    public func defaultViewSetup(for modalOperation: UIViewControllerModalOperation) -> UIView? {
+    func defaultViewSetup(for modalOperation: UIViewControllerModalOperation) -> UIView? {
         switch modalOperation {
         case .present:
             containerView.addSubview(toView)
@@ -107,7 +107,7 @@ public extension UIViewControllerContextTransitioning {
         return modalOperation == .present ? toView : fromView
     }
 
-    public func defaultViewSetup(for tabBarOperation: UITabBarControllerOperation) -> UIView? {
+    func defaultViewSetup(for tabBarOperation: UITabBarControllerOperation) -> UIView? {
         guard tabBarOperation != .none else { return nil }
         containerView.addSubview(toView)
         toView.frame = finalFrame(for: toViewController)

Transition/Classes/Transition.swift

@@ -52,7 +52,7 @@ public extension Transition {
 
     /// The effective duration is the duration, influenced by the presence of any timingParameter (in animation or interaction)
     /// that has an implicit duration due to a spring timing curve configuration.
-    public var effectiveDuration: TimeInterval {
+    var effectiveDuration: TimeInterval {
         /// First check if there's any animationLayer that has an implicit duration (due to spring timing parameters) that
         /// would effectively stretch up the total duration (i.e. lasting beyond transition.duration).
         let animationLayersDuration = animation.layers.reduce(duration) { (currentDuration, animationLayer) -> TimeInterval in

Transition/Classes/TransitionDriver.swift

@@ -424,17 +424,17 @@ fileprivate extension TransitionDriver {
         return uniqueParticipatingViewControllers.compactMap { $0 as? TransitionPhaseDelegate }
     }
 
-    fileprivate func willTransition(with sharedElement: SharedElement?) {
+    func willTransition(with sharedElement: SharedElement?) {
         guard let fromViewController = context.fromViewController, let toViewController = context.toViewController else { return }
         uniqueTransitionPhaseDelegates.forEach { $0.willTransition(from: fromViewController, to: toViewController, with: sharedElement) }
     }
 
-    fileprivate func didTransition(with sharedElement: SharedElement?) {
+    func didTransition(with sharedElement: SharedElement?) {
         guard let fromViewController = context.fromViewController, let toViewController = context.toViewController else { return }
         uniqueTransitionPhaseDelegates.forEach { $0.didTransition(from: fromViewController, to: toViewController, with: sharedElement) }
     }
 
-    fileprivate func cancelledTransition(with sharedElement: SharedElement?) {
+    func cancelledTransition(with sharedElement: SharedElement?) {
         guard let fromViewController = context.fromViewController, let toViewController = context.toViewController else { return }
         uniqueTransitionPhaseDelegates.forEach { $0.cancelledTransition(from: fromViewController, to: toViewController, with: sharedElement) }
     }

Transition/Classes/TransitionOperationContext.swift

@@ -53,5 +53,5 @@ public class TransitionOperationContext {
      *  view controller of the window, a parent view controller that is marked as defining the current context, 
      *  or the last view controller that was presented. This view controller may or may not be the same as the one in the source parameter."
     */
-    internal(set) var sourceViewController: UIViewController?
+    var sourceViewController: UIViewController?
 }