Migrated to SPM and Swift5.9

.swift-version

@@ -1 +1 @@
-3.2
+5.9

INSPhotoGallery.podspec

@@ -11,6 +11,6 @@ Pod::Spec.new do |s|
   s.ios.resource_bundle = { s.name => ['INSPhotoGallery/INSPhotoGallery.bundle/*'] }
   s.source_files = 'INSPhotoGallery/**/*.{h,m,swift}'
 
-  s.platform = :ios, '8.0'
+  s.platform = :ios, '15.0'
   s.frameworks = 'UIKit', 'Foundation'
 end

INSPhotoGallery/INSPhoto.swift

@@ -23,7 +23,7 @@ import UIKit
  * This is marked as @objc because of Swift bug http://stackoverflow.com/questions/30100787/fatal-error-array-cannot-be-bridged-from-objective-c-why-are-you-even-trying when passing for example [INSPhoto] array
  * to INSPhotosViewController
  */
-@objc public protocol INSPhotoViewable: class {
+@objc public protocol INSPhotoViewable: AnyObject {
     var image: UIImage? { get }
     var thumbnailImage: UIImage? { get }
     @objc optional var isDeletable: Bool { get }

INSPhotoGallery/INSPhotoViewController.swift

@@ -43,7 +43,7 @@ open class INSPhotoViewController: UIViewController, UIScrollViewDelegate {
     }()
 
     lazy private(set) var activityIndicator: UIActivityIndicatorView = {
-        let activityIndicator = UIActivityIndicatorView(activityIndicatorStyle: .white)
+        let activityIndicator = UIActivityIndicatorView(style: UIActivityIndicatorView.Style.medium)
         activityIndicator.startAnimating()
         return activityIndicator
     }()
@@ -96,7 +96,7 @@ open class INSPhotoViewController: UIViewController, UIScrollViewDelegate {
     }
 
     private func loadThumbnailImage() {
-        view.bringSubview(toFront: activityIndicator)
+        view.bringSubviewToFront(activityIndicator)
         photo.loadThumbnailImageWithCompletionHandler { [weak self] (image, error) -> () in
 
             let completeLoading = {
@@ -118,7 +118,7 @@ open class INSPhotoViewController: UIViewController, UIScrollViewDelegate {
     }
 
     private func loadFullSizeImage() {
-        view.bringSubview(toFront: activityIndicator)
+        view.bringSubviewToFront(activityIndicator)
         self.photo.loadImageWithCompletionHandler({ [weak self] (image, error) -> () in
             let completeLoading = {
                 self?.activityIndicator.stopAnimating()
@@ -136,7 +136,7 @@ open class INSPhotoViewController: UIViewController, UIScrollViewDelegate {
     }
 
     @objc private func handleLongPressWithGestureRecognizer(_ recognizer: UILongPressGestureRecognizer) {
-        if recognizer.state == UIGestureRecognizerState.began {
+        if recognizer.state == UIGestureRecognizer.State.began {
             longPressGestureHandler?(recognizer)
         }
     }

INSPhotoGallery/INSPhotosDataSource.swift

@@ -34,7 +34,7 @@ public struct INSPhotosDataSource {
     }
 
     public func indexOfPhoto(_ photo: INSPhotoViewable) -> Int? {
-        return photos.index(where: { $0 === photo})
+        return photos.firstIndex(where: { $0 === photo})
     }
 
     public func containsPhoto(_ photo: INSPhotoViewable) -> Bool {

INSPhotoGallery/INSPhotosInteractionAnimator.swift

@@ -60,7 +60,7 @@ public class INSPhotosInteractionAnimator: NSObject, UIViewControllerInteractive
         let velocityY = gestureRecognizer.velocity(in: gestureRecognizer.view).y
 
         var animationDuration = (Double(abs(velocityY)) * returnToCenterVelocityAnimationRatio) + 0.2
-        var animationCurve: UIViewAnimationOptions = .curveEaseOut
+        var animationCurve: UIView.AnimationOptions = .curveEaseOut
         var finalPageViewCenterPoint = anchorPoint
         var finalBackgroundAlpha = 1.0
 

INSPhotoGallery/INSPhotosOverlayView.swift

@@ -19,8 +19,8 @@
 
 import UIKit
 
-public protocol INSPhotosOverlayViewable:class {
-    weak var photosViewController: INSPhotosViewController? { get set }
+public protocol INSPhotosOverlayViewable: AnyObject {
+    var photosViewController: INSPhotosViewController? { get set }
 
     func populateWithPhoto(_ photo: INSPhotoViewable)
     func setHidden(_ hidden: Bool, animated: Bool)
@@ -57,7 +57,7 @@ open class INSPhotosOverlayView: UIView , INSPhotosOverlayViewable {
     }
 
     #if swift(>=4.0)
-    open var titleTextAttributes: [NSAttributedStringKey : AnyObject] = [:] {
+    open var titleTextAttributes: [NSAttributedString.Key : AnyObject] = [:] {
         didSet {
             navigationBar.titleTextAttributes = titleTextAttributes
         }

INSPhotoGallery/INSPhotosTransitionAnimator.swift

@@ -96,7 +96,7 @@ public class INSPhotosTransitionAnimator: NSObject, UIViewControllerAnimatedTran
 
         if dismissing {
             if let fromView = transitionContext.view(forKey: UITransitionContextViewKey.from) {
-                transitionContext.containerView.bringSubview(toFront: fromView)
+                transitionContext.containerView.bringSubviewToFront(fromView)
             }
         }
     }

INSPhotoGallery/INSPhotosViewController.swift

@@ -206,7 +206,7 @@ open class INSPhotosViewController: UIViewController, UIPageViewControllerDataSo
         if let overlayView = overlayView as? INSPhotosOverlayView {
             overlayView.photosViewController = self
             #if swift(>=4.0)
-                overlayView.titleTextAttributes = [NSAttributedStringKey.foregroundColor: textColor]
+            overlayView.titleTextAttributes = [NSAttributedString.Key.foregroundColor: textColor]
             #else
                 overlayView.titleTextAttributes = [NSForegroundColorAttributeName: textColor]
             #endif
@@ -224,10 +224,10 @@ open class INSPhotosViewController: UIViewController, UIPageViewControllerDataSo
         pageViewController.view.addGestureRecognizer(panGestureRecognizer)
         pageViewController.view.addGestureRecognizer(singleTapGestureRecognizer)
 
-        addChildViewController(pageViewController)
+        addChild(pageViewController)
         view.addSubview(pageViewController.view)
         pageViewController.view.autoresizingMask = [.flexibleWidth, .flexibleHeight]
-        pageViewController.didMove(toParentViewController: self)
+        pageViewController.didMove(toParent: self)
 
         setupOverlayView()
     }
@@ -247,7 +247,7 @@ open class INSPhotosViewController: UIViewController, UIPageViewControllerDataSo
     }
 
     private func setupPageViewControllerWithInitialPhoto(_ initialPhoto: INSPhotoViewable? = nil) {
-        pageViewController = UIPageViewController(transitionStyle: .scroll, navigationOrientation: .horizontal, options: [UIPageViewControllerOptionInterPageSpacingKey: 16.0])
+        pageViewController = UIPageViewController(transitionStyle: .scroll, navigationOrientation: .horizontal, options: [UIPageViewController.OptionsKey.interPageSpacing: 16.0])
         pageViewController.view.backgroundColor = UIColor.clear
         pageViewController.delegate = self
         pageViewController.dataSource = self
@@ -273,7 +273,7 @@ open class INSPhotosViewController: UIViewController, UIPageViewControllerDataSo
      - parameter photo:    The photo to make the currently displayed photo.
      - parameter animated: Whether to animate the transition to the new photo.
      */
-    open func changeToPhoto(_ photo: INSPhotoViewable, animated: Bool, direction: UIPageViewControllerNavigationDirection = .forward) {
+    open func changeToPhoto(_ photo: INSPhotoViewable, animated: Bool, direction: UIPageViewController.NavigationDirection = .forward) {
         if !dataSource.containsPhoto(photo) {
             return
         }

INSPhotoGallery/INSScalingImageView.swift

@@ -71,7 +71,7 @@ class INSScalingImageView: UIScrollView {
         showsVerticalScrollIndicator = false
         showsHorizontalScrollIndicator = false;
         bouncesZoom = true;
-        decelerationRate = UIScrollViewDecelerationRateFast;
+        decelerationRate = UIScrollView.DecelerationRate.fast;
     }
 
     func centerScrollViewContents() {
@@ -92,7 +92,7 @@ class INSScalingImageView: UIScrollView {
         }
 
         // Use `contentInset` to center the contents in the scroll view. Reasoning explained here: http://petersteinberger.com/blog/2013/how-to-center-uiscrollview/
-        self.contentInset = UIEdgeInsetsMake(verticalInset, horizontalInset, verticalInset, horizontalInset);
+        self.contentInset = UIEdgeInsets(top: verticalInset, left: horizontalInset, bottom: verticalInset, right: horizontalInset);
     }
 
     private func updateImage(_ image: UIImage?) {

Package.swift

@@ -0,0 +1,22 @@
+// swift-tools-version: 5.9
+// The swift-tools-version declares the minimum version of Swift required to build this package.
+
+import PackageDescription
+
+let package = Package(
+    name: "INSPhotoGallery",
+    platforms: [
+        .iOS(.v15)
+    ],
+    products: [
+        .library(
+            name: "INSPhotoGallery",
+            targets: ["INSPhotoGallery"]),
+    ],
+    targets: [
+        .target(
+            name: "INSPhotoGallery",
+	    path: "INSPhotoGallery"
+	)
+    ]
+)

README.md

@@ -88,6 +88,15 @@ pod 'INSPhotoGallery'
 
 If you don't have CocoaPods installed, you can learn how to do so [here](http://cocoapods.org).
 
+## SPM
+
+For this forked repo, add a new package dependency using:
+```
+https://github.com/redfin/INSPhotoGallery.git
+```
+
+And target a commit hash if a release version has not been published yet.
+
 ## Contact
 
 [inspace.io](http://inspace.io)