Backport to Xcode 15

.gitignore

@@ -0,0 +1,138 @@
+# Created by https://www.toptal.com/developers/gitignore/api/swift,swiftpm,cocoapods,macos
+# Edit at https://www.toptal.com/developers/gitignore?templates=swift,swiftpm,cocoapods,macos
+
+### CocoaPods ###
+## CocoaPods GitIgnore Template
+
+# CocoaPods - Only use to conserve bandwidth / Save time on Pushing
+#           - Also handy if you have a large number of dependant pods
+#           - AS PER https://guides.cocoapods.org/using/using-cocoapods.html NEVER IGNORE THE LOCK FILE
+Pods/
+
+### macOS ###
+# General
+.DS_Store
+.AppleDouble
+.LSOverride
+
+# Icon must end with two \r
+Icon
+
+
+# Thumbnails
+._*
+
+# Files that might appear in the root of a volume
+.DocumentRevisions-V100
+.fseventsd
+.Spotlight-V100
+.TemporaryItems
+.Trashes
+.VolumeIcon.icns
+.com.apple.timemachine.donotpresent
+
+# Directories potentially created on remote AFP share
+.AppleDB
+.AppleDesktop
+Network Trash Folder
+Temporary Items
+.apdisk
+
+### macOS Patch ###
+# iCloud generated files
+*.icloud
+
+### Swift ###
+# Xcode
+#
+# gitignore contributors: remember to update Global/Xcode.gitignore, Objective-C.gitignore & Swift.gitignore
+
+## User settings
+xcuserdata/
+
+## compatibility with Xcode 8 and earlier (ignoring not required starting Xcode 9)
+*.xcscmblueprint
+*.xccheckout
+
+## compatibility with Xcode 3 and earlier (ignoring not required starting Xcode 4)
+build/
+DerivedData/
+*.moved-aside
+*.pbxuser
+!default.pbxuser
+*.mode1v3
+!default.mode1v3
+*.mode2v3
+!default.mode2v3
+*.perspectivev3
+!default.perspectivev3
+
+## Obj-C/Swift specific
+*.hmap
+
+## App packaging
+*.ipa
+*.dSYM.zip
+*.dSYM
+
+## Playgrounds
+timeline.xctimeline
+playground.xcworkspace
+
+# Swift Package Manager
+# Add this line if you want to avoid checking in source code from Swift Package Manager dependencies.
+# Packages/
+# Package.pins
+# Package.resolved
+# *.xcodeproj
+# Xcode automatically generates this directory with a .xcworkspacedata file and xcuserdata
+# hence it is not needed unless you have added a package configuration file to your project
+.swiftpm
+
+.build/
+
+# CocoaPods
+# We recommend against adding the Pods directory to your .gitignore. However
+# you should judge for yourself, the pros and cons are mentioned at:
+# https://guides.cocoapods.org/using/using-cocoapods.html#should-i-check-the-pods-directory-into-source-control
+# Pods/
+# Add this line if you want to avoid checking in source code from the Xcode workspace
+# *.xcworkspace
+
+# Carthage
+# Add this line if you want to avoid checking in source code from Carthage dependencies.
+# Carthage/Checkouts
+
+Carthage/Build/
+
+# Accio dependency management
+Dependencies/
+.accio/
+
+# fastlane
+# It is recommended to not store the screenshots in the git repo.
+# Instead, use fastlane to re-generate the screenshots whenever they are needed.
+# For more information about the recommended setup visit:
+# https://docs.fastlane.tools/best-practices/source-control/#source-control
+
+fastlane/report.xml
+fastlane/Preview.html
+fastlane/screenshots/**/*.png
+fastlane/test_output
+
+# Code Injection
+# After new code Injection tools there's a generated folder /iOSInjectionProject
+# https://github.com/johnno1962/injectionforxcode
+
+iOSInjectionProject/
+
+### SwiftPM ###
+Packages
+xcuserdata
+# *.xcodeproj
+
+
+# End of https://www.toptal.com/developers/gitignore/api/swift,swiftpm,cocoapods,macos
+
+
+buildServer.json

Package.swift

@@ -1,4 +1,4 @@
-// swift-tools-version: 6.2
+// swift-tools-version: 5.9
 // The swift-tools-version declares the minimum version of Swift required to build this package.
 
 import PackageDescription
@@ -19,7 +19,10 @@ let package = Package(
         // Targets are the basic building blocks of a package, defining a module or a test suite.
         // Targets can depend on other targets in this package and products from dependencies.
         .target(
-            name: "LiquidGlassKit"
+            name: "LiquidGlassKit",
+            swiftSettings: [
+                .enableExperimentalFeature("AccessLevelOnImport")
+            ]
         ),
 
     ]

Sources/LiquidGlassKit/LiquidGlassEffectView.swift

@@ -29,7 +29,7 @@ public class LiquidGlassEffectView: UIView, AnyVisualEffectView {
         let liquidGlassView = LiquidGlassView(effect.style.liquidGlass)
         addSubview(liquidGlassView)
         self.liquidGlassView = liquidGlassView
-        
+
         setupContentView()
     }
 
@@ -71,13 +71,15 @@ public class LiquidGlassEffect: UIVisualEffect {
     public enum Style {
         case regular, clear
 
+#if compiler(>=6.2)
         @available(iOS 26.0, *)
         var nativeStyle: UIGlassEffect.Style {
             switch self {
             case .regular: .regular
             case .clear: .clear
             }
         }
+#endif
 
         var liquidGlass: LiquidGlass {
             switch self {
@@ -131,7 +133,7 @@ public class LiquidGlassContainerEffect: UIVisualEffect {
         self.isNative = isNative
         super.init()
     }
-    
+
     required init?(coder: NSCoder) {
         fatalError("init(coder:) has not been implemented")
     }
@@ -146,6 +148,7 @@ extension UIVisualEffectView: AnyVisualEffectView { }
 
 public func VisualEffectView(effect: UIVisualEffect?) -> AnyVisualEffectView {
     if let effect = effect as? LiquidGlassEffect {
+#if compiler(>=6.2)
         if #available(iOS 26.0, *), effect.isNative {
             let nativeEffect = UIGlassEffect(style: effect.style.nativeStyle)
             nativeEffect.isInteractive = effect.isInteractive
@@ -156,7 +159,12 @@ public func VisualEffectView(effect: UIVisualEffect?) -> AnyVisualEffectView {
             // Returns custom iOS 18 implementation
             return LiquidGlassEffectView(effect: effect)
         }
+#else
+        // Returns custom iOS 18 implementation
+        return LiquidGlassEffectView(effect: effect)
+#endif
     } else if let effect = effect as? LiquidGlassContainerEffect {
+#if compiler(>=6.2)
         if #available(iOS 26.0, *), effect.isNative {
             let nativeEffect = UIGlassContainerEffect()
             nativeEffect.spacing = effect.spacing
@@ -166,6 +174,10 @@ public func VisualEffectView(effect: UIVisualEffect?) -> AnyVisualEffectView {
             // Returns custom iOS 18 implementation
             return LiquidGlassEffectView(effect: effect)
         }
+#else
+        // Returns custom iOS 18 implementation
+        return LiquidGlassEffectView(effect: effect)
+#endif
     } else {
         return UIVisualEffectView(effect: effect)
     }

Sources/LiquidGlassKit/LiquidGlassSlider.swift

@@ -66,13 +66,15 @@ open class LiquidGlassSlider: UIControl {
     /// A Boolean value indicating whether changes in the slider's value generate continuous update events.
     open var isContinuous: Bool = true
 
+#if compiler(>=6.2)
     /// The slider's visual style.
     @available(iOS 26.0, *)
     open var sliderStyle: UISlider.Style {
         get { isThumbless ? .thumbless : .default }
         set { isThumbless = (newValue == .thumbless) }
     }
-
+#endif
+
     /// Internal storage for slider style (true = thumbless, false = continuous).
     private var isThumbless: Bool = false
 
@@ -850,8 +852,10 @@ public protocol AnySlider: UIControl {
     var minimumValueImage: UIImage? { get set }
     var maximumValueImage: UIImage? { get set }
     var isContinuous: Bool { get set }
+#if compiler(>=6.2)
     @available(iOS 26.0, *)
     var sliderStyle: UISlider.Style { get set }
+#endif
     var minimumTrackTintColor: UIColor? { get set }
     var maximumTrackTintColor: UIColor? { get set }
     var thumbTintColor: UIColor? { get set }

Sources/LiquidGlassKit/LiquidGlassView.swift

@@ -68,12 +68,12 @@ struct LiquidGlass {
                 glareOppositeSideBias: 0,
                 glareIntensity: 0.01,
                 glareEdgeSharpness: -0.2,
-                glareDirectionOffset: .pi * 0.9,
+                glareDirectionOffset: .pi * 0.9
             ),
             backgroundTextureSizeCoefficient: 1 / magnification,
             backgroundTextureScaleCoefficient: magnification,
             backgroundTextureBlurRadius: 0,
-            shadowOverlay: true,
+            shadowOverlay: true
         )
     }
 
@@ -90,12 +90,12 @@ struct LiquidGlass {
             glareOppositeSideBias: 1,
             glareIntensity: 0.1,
             glareEdgeSharpness: -0.1,
-            glareDirectionOffset: -.pi / 4,
+            glareDirectionOffset: -.pi / 4
         ),
         backgroundTextureSizeCoefficient: 1.1,
         backgroundTextureScaleCoefficient: 0.8,
         backgroundTextureBlurRadius: 0,
-        shadowOverlay: true,
+        shadowOverlay: true
     )
 
     static let regular = Self.init(
@@ -111,7 +111,7 @@ struct LiquidGlass {
             glareOppositeSideBias: 1,
             glareIntensity: 0.1,
             glareEdgeSharpness: -0.15,
-            glareDirectionOffset: -.pi / 4,
+            glareDirectionOffset: -.pi / 4
         ),
         backgroundTextureSizeCoefficient: 1,
         backgroundTextureScaleCoefficient: 0.2,