Reformat demo files

Demo/Demo-iOS/AppDelegate.swift

@@ -4,7 +4,10 @@ import UIKit
 class AppDelegate: UIResponder, UIApplicationDelegate {
   var window: UIWindow?
 
-  func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
+  func application(
+    _ application: UIApplication,
+    didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?
+  ) -> Bool {
     return true
   }
 }

Demo/Demo-iOS/EmptyViewController.swift

@@ -1,11 +1,12 @@
-import UIKit
 import Gifu
+import UIKit
 
 class EmptyViewController: UIViewController {
   let imageView = GIFImageView(image: #imageLiteral(resourceName: "mugen.gif"))
 
   lazy var customImageView: CustomAnimatedView = {
-    return CustomAnimatedView(frame: CGRect(x: 0, y: self.view.frame.height - 200, width: 360, height: 200))
+    return CustomAnimatedView(
+      frame: CGRect(x: 0, y: self.view.frame.height - 200, width: 360, height: 200))
   }()
 
   override func viewDidLoad() {

Demo/Demo-iOS/UIImageViewExtension.swift

@@ -1,5 +1,5 @@
-import UIKit
 import Gifu
+import UIKit
 
 extension UIImageView: GIFAnimatable {
   private struct AssociatedKeys {
@@ -12,7 +12,8 @@ extension UIImageView: GIFAnimatable {
 
   public var animator: Animator? {
     get {
-      guard let animator = objc_getAssociatedObject(self, &AssociatedKeys.AnimatorKey) as? Animator else {
+      guard let animator = objc_getAssociatedObject(self, &AssociatedKeys.AnimatorKey) as? Animator
+      else {
         let animator = Animator(withDelegate: self)
         self.animator = animator
         return animator
@@ -22,7 +23,9 @@ extension UIImageView: GIFAnimatable {
     }
 
     set {
-      objc_setAssociatedObject(self, &AssociatedKeys.AnimatorKey, newValue as Animator?, .OBJC_ASSOCIATION_RETAIN_NONATOMIC)
+      objc_setAssociatedObject(
+        self, &AssociatedKeys.AnimatorKey, newValue as Animator?, .OBJC_ASSOCIATION_RETAIN_NONATOMIC
+      )
     }
   }
 }

Demo/Demo-iOS/ViewController.swift

@@ -1,11 +1,11 @@
-import UIKit
 import Gifu
+import UIKit
 
 class ViewController: UIViewController {
   @IBOutlet weak var imageView: GIFImageView!
   @IBOutlet weak var imageDataLabel: UILabel!
   @IBOutlet weak var memoryUsageLabel: UILabel!
-  @IBAction func unwindToRootViewController(segue: UIStoryboardSegue) { }
+  @IBAction func unwindToRootViewController(segue: UIStoryboardSegue) {}
 
   var currentGIFName: String = "earth" {
     didSet {
@@ -43,18 +43,24 @@ class ViewController: UIViewController {
   func animate() {
     imageView.setFrameBufferSize(1)
 
-    imageView.animate(withGIFNamed: currentGIFName, preparationBlock:  {
-      DispatchQueue.main.async {
-        self.imageDataLabel.text = self.currentGIFName.capitalized + " (\(self.imageView.frameCount) frames / \(String(format: "%.2f", self.imageView.gifLoopDuration))s)"
-      }
-    }, loopBlock: {
+    imageView.animate(
+      withGIFNamed: currentGIFName,
+      preparationBlock: {
+        DispatchQueue.main.async {
+          self.imageDataLabel.text =
+            self.currentGIFName.capitalized
+            + " (\(self.imageView.frameCount) frames / \(String(format: "%.2f", self.imageView.gifLoopDuration))s)"
+        }
+      },
+      loopBlock: {
         print("Loop finished")
-    })
+      })
 
     if #available(iOS 15.0, *) {
       Timer.scheduledTimer(withTimeInterval: 1, repeats: true) { _ in
         DispatchQueue.main.async {
-          self.memoryUsageLabel.text = "Memory usage: \(Memory.memoryFootprint()!.formatted(.byteCount(style: .memory)))"
+          self.memoryUsageLabel.text =
+            "Memory usage: \(Memory.memoryFootprint()!.formatted(.byteCount(style: .memory)))"
         }
       }
     }
@@ -64,8 +70,10 @@ class ViewController: UIViewController {
 class Memory: NSObject {
   // https://forums.developer.apple.com/thread/105088#357415
   class func memoryFootprint() -> Int? {
-    let TASK_VM_INFO_COUNT = mach_msg_type_number_t(MemoryLayout<task_vm_info_data_t>.size / MemoryLayout<integer_t>.size)
-    let TASK_VM_INFO_REV1_COUNT = mach_msg_type_number_t(MemoryLayout.offset(of: \task_vm_info_data_t.min_address)! / MemoryLayout<integer_t>.size)
+    let TASK_VM_INFO_COUNT = mach_msg_type_number_t(
+      MemoryLayout<task_vm_info_data_t>.size / MemoryLayout<integer_t>.size)
+    let TASK_VM_INFO_REV1_COUNT = mach_msg_type_number_t(
+      MemoryLayout.offset(of: \task_vm_info_data_t.min_address)! / MemoryLayout<integer_t>.size)
 
     var info = task_vm_info_data_t()
     var count = TASK_VM_INFO_COUNT

Demo/Demo-tvOS/AppDelegate.swift

@@ -5,8 +5,10 @@ class AppDelegate: UIResponder, UIApplicationDelegate {
 
   var window: UIWindow?
 
-
-  func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
+  func application(
+    _ application: UIApplication,
+    didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?
+  ) -> Bool {
     // Override point for customization after application launch.
     return true
   }
@@ -28,6 +30,4 @@ class AppDelegate: UIResponder, UIApplicationDelegate {
     // Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface.
   }
 
-
 }
-

Demo/Demo-tvOS/ViewController.swift

@@ -1,12 +1,10 @@
-import UIKit
 import Gifu
-
+import UIKit
 
 class ViewController: UIViewController {
 
   @IBOutlet weak var imageView: GIFImageView!
 
-
   override func viewDidLoad() {
     super.viewDidLoad()
     // Do any additional setup after loading the view.
@@ -20,4 +18,3 @@ class ViewController: UIViewController {
     imageView.animate(withGIFNamed: "mugen")
   }
 }
-

Sources/Gifu/Classes/GIFImageView.swift

@@ -2,7 +2,6 @@ import UIKit
 
 /// Example class that conforms to `GIFAnimatable`. Uses default values for the animator frame buffer count and resize behavior. You can either use it directly in your code or use it as a blueprint for your own subclass.
 public class GIFImageView: UIImageView, GIFAnimatable {
-
   /// A lazy animator.
   public lazy var animator: Animator? = {
     return Animator(withDelegate: self)