Upgrade to Swift 5 (#224)

* Upgrade to Swift 5

- Fix test target
- Upgrade everything to Swift 5
- Fix compiler warnings
- Small refactor in VideoScrubber to DRY up code and fix warnings
- Update .travis.yml for Xcode 11
- Remove obsolete .swift-version file
- Bump version to 6.0.0

* Fix .travis.yml to use iPhone 11 simulator

Author: jfahrenkrug

.swift-version

@@ -1,6 +1,6 @@
-osx_image: xcode10
+osx_image: xcode11
 language: objective-c
 
 script:
 - set -o pipefail
-- xcodebuild build -scheme ImageViewer -sdk iphonesimulator -destination "platform=iOS Simulator,name=iPhone 6s" | xcpretty -c
+- xcodebuild build -scheme ImageViewer -sdk iphonesimulator -destination "platform=iOS Simulator,name=iPhone 11" | xcpretty -c

.travis.yml

@@ -1,5 +1,9 @@
 # ImageViewer
 
+## Version 6.0.0
+
+* Upgrade to Swift 5 and fix subsequent compiler warnings
+
 ## Version 4.1.0
 
 * Autoplay video ([PR #120](https://github.com/MailOnline/ImageViewer/pull/120)).

CHANGELOG.md

@@ -69,7 +69,7 @@ class ViewController: UIViewController {
 
         guard let displacedView = sender.view as? UIImageView else { return }
 
-        guard let displacedViewIndex = items.index(where: { $0.imageView == displacedView }) else { return }
+        guard let displacedViewIndex = items.firstIndex(where: { $0.imageView == displacedView }) else { return }
 
         let frame = CGRect(x: 0, y: 0, width: 200, height: 24)
         let headerView = CounterView(frame: frame, currentIndex: displacedViewIndex, count: items.count)

Example/ViewController.swift

@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
     s.name             = "ImageViewer"
-    s.version          = "5.0.0"
+    s.version          = "6.0.0"
     s.summary          = "An image viewer à la Twitter"
     s.description  = <<-EOS
    ImageViewer is a library that enables a user to visualize an image in fullscreen. Besides the typical pinch and double tap to zoom, we also provide a vertical swipe to dismiss. Finally, we try to mimic the displacement of the image from its current container into fullscreen, this feature being its main selling point. We also offer an amazing Gallery, so you can swipe between images.

ImageViewer.podspec

@@ -460,11 +460,11 @@
 				TargetAttributes = {
 					C7897CE11C1350B7006447FB = {
 						CreatedOnToolsVersion = 7.1.1;
-						LastSwiftMigration = 0900;
+						LastSwiftMigration = 1100;
 					};
 					C7DABE471C12245B00F5BD7B = {
 						CreatedOnToolsVersion = 7.1.1;
-						LastSwiftMigration = 0900;
+						LastSwiftMigration = 1100;
 					};
 					EB1CEC121C84A4EE00BB27B8 = {
 						CreatedOnToolsVersion = 7.2.1;
@@ -473,7 +473,7 @@
 			};
 			buildConfigurationList = C7DABE421C12245B00F5BD7B /* Build configuration list for PBXProject "ImageViewer" */;
 			compatibilityVersion = "Xcode 3.2";
-			developmentRegion = English;
+			developmentRegion = en;
 			hasScannedForEncodings = 0;
 			knownRegions = (
 				en,
@@ -652,7 +652,7 @@
 				PRODUCT_BUNDLE_IDENTIFIER = mailonline.Example;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_SWIFT3_OBJC_INFERENCE = Default;
-				SWIFT_VERSION = 4.2;
+				SWIFT_VERSION = 5.0;
 			};
 			name = Debug;
 		};
@@ -666,7 +666,7 @@
 				PRODUCT_BUNDLE_IDENTIFIER = mailonline.Example;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_SWIFT3_OBJC_INFERENCE = Default;
-				SWIFT_VERSION = 4.2;
+				SWIFT_VERSION = 5.0;
 			};
 			name = Release;
 		};
@@ -723,7 +723,7 @@
 				ONLY_ACTIVE_ARCH = YES;
 				SDKROOT = iphoneos;
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
-				SWIFT_VERSION = 3.0;
+				SWIFT_VERSION = 5.0;
 				TARGETED_DEVICE_FAMILY = "1,2";
 				VERSIONING_SYSTEM = "apple-generic";
 				VERSION_INFO_PREFIX = "";
@@ -777,7 +777,7 @@
 				MTL_ENABLE_DEBUG_INFO = NO;
 				SDKROOT = iphoneos;
 				SWIFT_OPTIMIZATION_LEVEL = "-Owholemodule";
-				SWIFT_VERSION = 3.0;
+				SWIFT_VERSION = 5.0;
 				TARGETED_DEVICE_FAMILY = "1,2";
 				VALIDATE_PRODUCT = YES;
 				VERSIONING_SYSTEM = "apple-generic";
@@ -800,7 +800,7 @@
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SKIP_INSTALL = YES;
 				SWIFT_SWIFT3_OBJC_INFERENCE = Default;
-				SWIFT_VERSION = 4.2;
+				SWIFT_VERSION = 5.0;
 			};
 			name = Debug;
 		};
@@ -819,7 +819,7 @@
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SKIP_INSTALL = YES;
 				SWIFT_SWIFT3_OBJC_INFERENCE = Default;
-				SWIFT_VERSION = 4.2;
+				SWIFT_VERSION = 5.0;
 			};
 			name = Release;
 		};

ImageViewer.xcodeproj/project.pbxproj

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>IDEDidComputeMac32BitWarning</key>
+	<true/>
+</dict>
+</plist>

ImageViewer.xcodeproj/project.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist

@@ -9,7 +9,7 @@
 import UIKit
 
 public extension UIScreen {
-    public class var hasNotch: Bool {
+    class var hasNotch: Bool {
         // This will of course fail if Apple produces an notchless iPhone with these dimensions,
         // but is the simplest detection mechanism so far.
         return main.nativeBounds.size == CGSize(width: 1125, height: 2436)

ImageViewer/Source/Extensions/UIScreen.swift

@@ -10,7 +10,7 @@ import UIKit
 
 public extension UIViewController {
 
-    public func presentImageGallery(_ gallery: GalleryViewController, completion: (() -> Void)? = {}) {
+    func presentImageGallery(_ gallery: GalleryViewController, completion: (() -> Void)? = {}) {
 
         present(gallery, animated: false, completion: completion)
     }

ImageViewer/Source/Extensions/UIViewController.swift

@@ -20,6 +20,17 @@ open class VideoScrubber: UIControl {
     var duration: TimeInterval?
     fileprivate var periodicObserver: AnyObject?
     fileprivate var stoppedSlidingTimeStamp = Date()
+    
+    /// The attributes dictionary used for the timeLabel
+    fileprivate var timeLabelAttributes:  [NSAttributedString.Key : Any] {
+        var attributes: [NSAttributedString.Key : Any] = [NSAttributedString.Key.font : UIFont.systemFont(ofSize: 12)]
+        
+        if let tintColor = tintColor {
+            attributes[NSAttributedString.Key.foregroundColor] = tintColor
+        }
+        
+        return attributes
+    }
 
     weak var player: AVPlayer? {
 
@@ -106,7 +117,7 @@ open class VideoScrubber: UIControl {
         scrubber.maximumValue = 1000
         scrubber.value = 0
 
-        timeLabel.attributedText = NSAttributedString(string: "--:--", attributes: [NSAttributedString.Key.foregroundColor : self.tintColor, NSAttributedString.Key.font : UIFont.systemFont(ofSize: 12)])
+        timeLabel.attributedText = NSAttributedString(string: "--:--", attributes: timeLabelAttributes)
         timeLabel.textAlignment =  .center
 
         playButton.addTarget(self, action: #selector(play), for: UIControl.Event.touchUpInside)
@@ -238,10 +249,10 @@ open class VideoScrubber: UIControl {
 
             let timeString = stringFromTimeInterval(currentTime as TimeInterval)
 
-            timeLabel.attributedText = NSAttributedString(string: timeString, attributes: [NSAttributedString.Key.foregroundColor : self.tintColor, NSAttributedString.Key.font : UIFont.systemFont(ofSize: 12)])
+            timeLabel.attributedText = NSAttributedString(string: timeString, attributes: timeLabelAttributes)
         }
         else {
-            timeLabel.attributedText = NSAttributedString(string: "--:--", attributes: [NSAttributedString.Key.foregroundColor : self.tintColor, NSAttributedString.Key.font : UIFont.systemFont(ofSize: 12)])
+            timeLabel.attributedText = NSAttributedString(string: "--:--", attributes: timeLabelAttributes)
         }
     }
 
@@ -258,7 +269,7 @@ open class VideoScrubber: UIControl {
     }
 
     override open func tintColorDidChange() {
-        timeLabel.attributedText = NSAttributedString(string: "--:--", attributes: [NSAttributedString.Key.foregroundColor : self.tintColor, NSAttributedString.Key.font : UIFont.systemFont(ofSize: 12)])
+        timeLabel.attributedText = NSAttributedString(string: "--:--", attributes: timeLabelAttributes)
 
         let playButtonImage = playButton.imageView?.image?.withRenderingMode(UIImage.RenderingMode.alwaysTemplate)
         playButton.imageView?.tintColor = self.tintColor