Working Indicators

DynamicIsland.xcodeproj/project.pbxproj

@@ -7,6 +7,9 @@
 	objects = {
 
 /* Begin PBXBuildFile section */
+		7E25ECA12E6C6C3800700E72 /* CoreBrightness.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 7E25ECA02E6C6C3800700E72 /* CoreBrightness.framework */; };
+		7E25ECA32E6C6E2600700E72 /* OSD.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 7E25ECA22E6C6E2600700E72 /* OSD.framework */; };
+		7E25ECA52E6C6E7800700E72 /* DisplayServices.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 7E25ECA42E6C6E7800700E72 /* DisplayServices.framework */; };
 		7E6118142E24071E0050006C /* LaunchAtLogin in Frameworks */ = {isa = PBXBuildFile; productRef = 14D032192C68F32E0096E6A1 /* LaunchAtLogin */; };
 		7E6118152E24071E0050006C /* Sparkle in Frameworks */ = {isa = PBXBuildFile; productRef = 14D0321C2C68F3350096E6A1 /* Sparkle */; };
 		7E6118162E24071E0050006C /* KeyboardShortcuts in Frameworks */ = {isa = PBXBuildFile; productRef = B18654382C6F4990000B926A /* KeyboardShortcuts */; };
@@ -39,6 +42,9 @@
 /* End PBXCopyFilesBuildPhase section */
 
 /* Begin PBXFileReference section */
+		7E25ECA02E6C6C3800700E72 /* CoreBrightness.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = CoreBrightness.framework; path = /System/Library/PrivateFrameworks/CoreBrightness.framework; sourceTree = "<absolute>"; };
+		7E25ECA22E6C6E2600700E72 /* OSD.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = OSD.framework; path = /System/Library/PrivateFrameworks/OSD.framework; sourceTree = "<absolute>"; };
+		7E25ECA42E6C6E7800700E72 /* DisplayServices.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = DisplayServices.framework; path = /System/Library/PrivateFrameworks/DisplayServices.framework; sourceTree = "<absolute>"; };
 		7E81303D2E3FB40500E08F3F /* mediaremote-adapter.pl */ = {isa = PBXFileReference; lastKnownFileType = text.script.perl; path = "mediaremote-adapter.pl"; sourceTree = "<group>"; };
 		7E81303E2E3FB40500E08F3F /* NowPlayingTestClient */ = {isa = PBXFileReference; lastKnownFileType = "compiled.mach-o.executable"; path = NowPlayingTestClient; sourceTree = "<group>"; };
 		7EE1D73C2E6B1E0B00997219 /* ApplicationServices.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = ApplicationServices.framework; path = System/Library/Frameworks/ApplicationServices.framework; sourceTree = SDKROOT; };
@@ -60,12 +66,15 @@
 			isa = PBXFrameworksBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
+				7E25ECA12E6C6C3800700E72 /* CoreBrightness.framework in Frameworks */,
 				7EE1D73F2E6B1E1200997219 /* IOKit.framework in Frameworks */,
 				7EE1D73D2E6B1E0B00997219 /* ApplicationServices.framework in Frameworks */,
 				BA90505C953246D0AB206451 /* MediaRemoteAdapter.framework in Frameworks */,
 				7E61181C2E24071E0050006C /* MacroVisionKit in Frameworks */,
 				7E61181B2E24071E0050006C /* LottieUI in Frameworks */,
 				7E61181A2E24071E0050006C /* SwiftUIIntrospect in Frameworks */,
+				7E25ECA32E6C6E2600700E72 /* OSD.framework in Frameworks */,
+				7E25ECA52E6C6E7800700E72 /* DisplayServices.framework in Frameworks */,
 				7E6118192E24071E0050006C /* Defaults in Frameworks */,
 				7E6118182E24071E0050006C /* TheBoringWorkerNotifier in Frameworks */,
 				7E6118172E24071E0050006C /* Collections in Frameworks */,
@@ -91,6 +100,9 @@
 		7E81304F2E3FB42700E08F3F /* Frameworks */ = {
 			isa = PBXGroup;
 			children = (
+				7E25ECA02E6C6C3800700E72 /* CoreBrightness.framework */,
+				7E25ECA42E6C6E7800700E72 /* DisplayServices.framework */,
+				7E25ECA22E6C6E2600700E72 /* OSD.framework */,
 				7EE1D73E2E6B1E1200997219 /* IOKit.framework */,
 				7EE1D73C2E6B1E0B00997219 /* ApplicationServices.framework */,
 			);
@@ -371,6 +383,10 @@
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_EMIT_LOC_STRINGS = YES;
 				SWIFT_VERSION = 5.0;
+				SYSTEM_FRAMEWORK_SEARCH_PATHS = (
+					"$(inherited)",
+					"$(SYSTEM_LIBRARY_DIR)/PrivateFrameworks",
+				);
 			};
 			name = Debug;
 		};
@@ -408,6 +424,10 @@
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_EMIT_LOC_STRINGS = YES;
 				SWIFT_VERSION = 5.0;
+				SYSTEM_FRAMEWORK_SEARCH_PATHS = (
+					"$(inherited)",
+					"$(SYSTEM_LIBRARY_DIR)/PrivateFrameworks",
+				);
 			};
 			name = Release;
 		};

DynamicIsland/DynamicIsland.entitlements

@@ -2,20 +2,8 @@
 <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
 <plist version="1.0">
 <dict>
-	<key>com.apple.security.app-sandbox</key>
-	<true/>
 	<key>com.apple.security.automation.apple-events</key>
 	<true/>
-	<key>com.apple.security.device.camera</key>
-	<true/>
-	<key>com.apple.security.files.user-selected.read-write</key>
-	<true/>
-	<key>com.apple.security.network.client</key>
-	<true/>
-	<key>com.apple.security.network.server</key>
-	<true/>
-	<key>com.apple.security.personal-information.calendars</key>
-	<true/>
 	<key>com.apple.security.temporary-exception.apple-events</key>
 	<array>
 		<string>com.spotify.client</string>

DynamicIsland/DynamicIslandApp.swift

@@ -111,6 +111,10 @@ class AppDelegate: NSObject, NSApplicationDelegate {
     func applicationWillTerminate(_ notification: Notification) {
         // Cancel any pending window size updates
         windowSizeUpdateWorkItem?.cancel()
+        
+        // Re-enable system HUD on app termination
+        SystemOSDManager.enableSystemHUD()
+        
         NotificationCenter.default.removeObserver(self)
     }
     
@@ -290,6 +294,9 @@ class AppDelegate: NSObject, NSApplicationDelegate {
 
         coordinator.setupWorkersNotificationObservers()
         
+        // Setup SystemHUD Manager
+        SystemHUDManager.shared.setup(coordinator: coordinator)
+        
         // Observe tab changes - use debounced updates
         coordinator.$currentView.sink { [weak self] newView in
             self?.debouncedUpdateWindowSize()

DynamicIsland/Localizable.xcstrings

@@ -202,6 +202,15 @@
           }
         }
       }
+    },
+    "Brightness HUD" : {
+
+    },
+    "Built-in System Monitoring" : {
+
+    },
+    "Built-in system monitoring detects volume, brightness, and keyboard backlight changes directly without requiring external apps." : {
+
     },
     "Buy us a coffee" : {
 
@@ -467,6 +476,12 @@
     },
     "Email address" : {
 
+    },
+    "Enable Built-in System HUD" : {
+
+    },
+    "Enable built-in system monitoring to replace macOS HUD notifications with Dynamic Island displays." : {
+
     },
     "Enable colored spectrograms" : {
       "extractionState" : "stale",
@@ -638,6 +653,9 @@
     },
     "Installed extensions" : {
 
+    },
+    "Keyboard Backlight HUD" : {
+
     },
     "Keyboard shortcuts are disabled" : {
 
@@ -1027,6 +1045,9 @@
     },
     "Remember last tab" : {
 
+    },
+    "Replaces system HUD notifications with Dynamic Island displays." : {
+
     },
     "Reset to Default" : {
 
@@ -1080,6 +1101,9 @@
     },
     "Selected animation" : {
 
+    },
+    "Sensitivity" : {
+
     },
     "Set a custom duration for the timer. This will be used when you press the 'Custom' button in the timer interface." : {
 
@@ -1337,6 +1361,9 @@
     },
     "View on GitHub: th-ch/youtube-music" : {
 
+    },
+    "Volume HUD" : {
+
     },
     "Welcome" : {
 

DynamicIsland/components/Settings/SettingsView.swift

@@ -41,11 +41,8 @@ struct SettingsView: View {
                 NavigationLink(value: "Calendar") {
                     Label("Calendar", systemImage: "calendar")
                 }
-                if extensionManager.installedExtensions
+                NavigationLink(value: "HUD") {
-                    .contains(where: { $0.bundleIdentifier == hudExtension }) {
+                    Label("HUDs", systemImage: "dial.medium.fill")
-                    NavigationLink(value: "HUD") {
-                        Label("HUDs", systemImage: "dial.medium.fill")
-                    }
                 }
                 NavigationLink(value: "Battery") {
                     Label("Battery", systemImage: "battery.100.bolt")
@@ -423,14 +420,66 @@ struct HUD: View {
     @EnvironmentObject var vm: DynamicIslandViewModel
     @Default(.inlineHUD) var inlineHUD
     @Default(.enableGradient) var enableGradient
+    @Default(.enableSystemHUD) var enableSystemHUD
+    @Default(.enableVolumeHUD) var enableVolumeHUD
+    @Default(.enableBrightnessHUD) var enableBrightnessHUD
+    @Default(.enableKeyboardBacklightHUD) var enableKeyboardBacklightHUD
+    @Default(.systemHUDSensitivity) var systemHUDSensitivity
     @ObservedObject var coordinator = DynamicIslandViewCoordinator.shared
+    
     var body: some View {
         Form {
             Section {
                 Toggle("Enable HUD replacement", isOn: $coordinator.hudReplacement)
             } header: {
                 Text("General")
+            } footer: {
+                Text("Replaces system HUD notifications with Dynamic Island displays.")
+                    .foregroundStyle(.secondary)
+                    .font(.caption)
             }
+            
+            Section {
+                Toggle("Enable Built-in System HUD", isOn: $enableSystemHUD)
+                    .onChange(of: enableSystemHUD) { _ in
+                        // SystemHUDManager will automatically handle start/stop via its @Default observer
+                    }
+                
+                if enableSystemHUD {
+                    Toggle("Volume HUD", isOn: $enableVolumeHUD)
+                    Toggle("Brightness HUD", isOn: $enableBrightnessHUD)
+                    Toggle("Keyboard Backlight HUD", isOn: $enableKeyboardBacklightHUD)
+                    
+                    HStack {
+                        Text("Sensitivity")
+                        Spacer()
+                        Slider(value: Binding(
+                            get: { Double(systemHUDSensitivity) },
+                            set: { systemHUDSensitivity = Int($0) }
+                        ), in: 1...10, step: 1) {
+                            Text("Sensitivity")
+                        }
+                        .frame(width: 120)
+                        Text("\(systemHUDSensitivity)")
+                            .foregroundStyle(.secondary)
+                            .font(.caption)
+                            .frame(width: 20)
+                    }
+                }
+            } header: {
+                Text("Built-in System Monitoring")
+            } footer: {
+                if enableSystemHUD {
+                    Text("Built-in system monitoring detects volume, brightness, and keyboard backlight changes directly without requiring external apps.")
+                        .foregroundStyle(.secondary)
+                        .font(.caption)
+                } else {
+                    Text("Enable built-in system monitoring to replace macOS HUD notifications with Dynamic Island displays.")
+                        .foregroundStyle(.secondary)
+                        .font(.caption)
+                }
+            }
+            
             Section {
                 Picker("HUD style", selection: $inlineHUD) {
                     Text("Default")

DynamicIsland/helpers/AppleScriptError.swift

@@ -0,0 +1,15 @@
+//
+//  AppleScriptError.swift
+//  DynamicIsland
+//
+//  Adapted from TheBoringWorker-HUD
+//  Created by GitHub Copilot on 06/09/25.
+//
+
+import Foundation
+
+enum AppleScriptError: Error {
+    case initScriptFailed
+    case runtimeError
+    case emptyOutput
+}

DynamicIsland/helpers/AppleScriptRunner.swift

@@ -0,0 +1,28 @@
+//
+//  AppleScriptRunner.swift
+//  DynamicIsland
+//
+//  Adapted from TheBoringWorker-HUD
+//  Created by GitHub Copilot on 06/09/25.
+//
+
+import Foundation
+
+class AppleScriptRunner {
+    private init() {}
+
+    static func run(script: String) throws -> String {
+        var error: NSDictionary?
+        if let scriptObject = NSAppleScript(source: script) {
+            let output: NSAppleEventDescriptor = scriptObject.executeAndReturnError(&error)
+            guard error == nil else {
+                throw AppleScriptError.runtimeError
+            }
+            if let outputString = output.stringValue {
+                return outputString
+            }
+            throw AppleScriptError.emptyOutput
+        }
+        throw AppleScriptError.initScriptFailed
+    }
+}

DynamicIsland/helpers/SensorError.swift

@@ -0,0 +1,22 @@
+//
+//  SensorError.swift
+//  DynamicIsland
+//
+//  Adapted from TheBoringWorker-HUD
+//  Created by GitHub Copilot on 06/09/25.
+//
+
+import Foundation
+
+enum SensorError: Error {
+    enum Display: Error {
+        case notFound
+        case notSilicon
+        case notStandard
+    }
+    enum Keyboard: Error {
+        case notFound
+        case notSilicon
+        case notStandard
+    }
+}

DynamicIsland/helpers/SensorMethod.swift

@@ -0,0 +1,15 @@
+//
+//  SensorMethod.swift
+//  DynamicIsland
+//
+//  Adapted from TheBoringWorker-HUD
+//  Created by GitHub Copilot on 06/09/25.
+//
+
+import Foundation
+
+enum SensorMethod {
+    case standard
+    case m1
+    case allFailed
+}

DynamicIsland/managers/SystemChangesObserver.swift

@@ -0,0 +1,153 @@
+//
+//  SystemChangesObserver.swift
+//  DynamicIsland
+//
+//  Adapted from TheBoringWorker-HUD ChangesObserver.swift
+//  Created by GitHub Copilot on 06/09/25.
+//
+
+import Cocoa
+import Foundation
+import Defaults
+
+class SystemChangesObserver: ObservableObject {
+    private var oldVolume: Float
+    private var oldMuted: Bool
+    private var oldBrightness: Float = 0
+    
+    private weak var coordinator: DynamicIslandViewCoordinator?
+    
+    @Default(.enableSystemHUD) var enableSystemHUD
+    @Default(.enableVolumeHUD) var enableVolumeHUD
+    @Default(.enableBrightnessHUD) var enableBrightnessHUD
+
+    init(coordinator: DynamicIslandViewCoordinator) {
+        self.coordinator = coordinator
+        oldVolume = SystemVolumeManager.getOutputVolume()
+        oldMuted = SystemVolumeManager.isMuted()
+
+        do {
+            oldBrightness = try SystemDisplayManager.getDisplayBrightness()
+        } catch {
+            NSLog("Failed to retrieve display brightness: \(error)")
+        }
+    }
+
+    func startObserving() {
+        guard enableSystemHUD else { return }
+        
+        createObservers()
+        createTimerForContinuousChangesCheck(with: 0.2)
+    }
+
+    private func createTimerForContinuousChangesCheck(with seconds: TimeInterval) {
+        let timer = Timer(
+            timeInterval: seconds, target: self, selector: #selector(checkChanges), userInfo: nil,
+            repeats: true)
+        let mainLoop = RunLoop.main
+        mainLoop.add(timer, forMode: .common)
+    }
+
+    private func createObservers() {
+        NotificationCenter.default.addObserver(
+            self,
+            selector: #selector(showVolumeHUD),
+            name: SystemKeyObserver.volumeChanged,
+            object: nil)
+        
+        NotificationCenter.default.addObserver(
+            self,
+            selector: #selector(showBrightnessHUD),
+            name: SystemKeyObserver.brightnessChanged,
+            object: nil)
+    }
+
+    @objc func showVolumeHUD() {
+        guard enableSystemHUD && enableVolumeHUD else { return }
+        
+        if oldVolume == 0.0 || oldVolume == 1.0 {
+            sendVolumeNotification(value: oldVolume)
+        }
+        print("Showing volume HUD")
+    }
+    
+    @objc func showBrightnessHUD() {
+        guard enableSystemHUD && enableBrightnessHUD else { return }
+        
+        if oldBrightness == 0.0 || oldBrightness == 1.0 {
+            sendBrightnessNotification(value: oldBrightness)
+        }
+        print("Showing brightness HUD")
+    }
+
+    @objc func checkChanges() {
+        guard enableSystemHUD else { return }
+        
+        checkBrightnessChanges()
+        checkVolumeChanges()
+    }
+
+    private func isAlmost(firstNumber: Float, secondNumber: Float) -> Bool {
+        let marginValue = 5 / 100.0
+        return (firstNumber + Float(marginValue) >= secondNumber && firstNumber - Float(marginValue) <= secondNumber)
+    }
+
+    private func checkVolumeChanges() {
+        guard enableVolumeHUD else { return }
+        
+        let newVolume = SystemVolumeManager.getOutputVolume()
+        let newMuted = SystemVolumeManager.isMuted()
+        
+        if !isAlmost(firstNumber: oldVolume, secondNumber: newVolume) || newMuted != oldMuted {
+            if newMuted {
+                sendVolumeNotification(value: 0.0)
+            } else {
+                sendVolumeNotification(value: newVolume)
+            }
+            oldVolume = newVolume
+            oldMuted = newMuted
+        }
+    }
+
+    private func checkBrightnessChanges() {
+        guard enableBrightnessHUD else { return }
+        
+        if NSScreen.screens.count == 0 {
+            return
+        }
+        
+        do {
+            let newBrightness = try SystemDisplayManager.getDisplayBrightness()
+            if !isAlmost(firstNumber: oldBrightness, secondNumber: newBrightness) {
+                sendBrightnessNotification(value: newBrightness)
+                oldBrightness = newBrightness
+            }
+        } catch {
+            NSLog("Failed to retrieve display brightness: \(error)")
+        }
+    }
+    
+    // MARK: - Internal Notification Methods
+    
+    private func sendVolumeNotification(value: Float) {
+        coordinator?.toggleSneakPeek(
+            status: true,
+            type: .volume,
+            value: CGFloat(value),
+            icon: ""
+        )
+    }
+    
+    private func sendBrightnessNotification(value: Float) {
+        coordinator?.toggleSneakPeek(
+            status: true,
+            type: .brightness,
+            value: CGFloat(value),
+            icon: ""
+        )
+    }
+    
+    deinit {
+        NotificationCenter.default.removeObserver(self)
+    }
+}

DynamicIsland/managers/SystemDisplayManager.swift

@@ -0,0 +1,73 @@
+//
+//  SystemDisplayManager.swift
+//  DynamicIsland
+//
+//  Adapted from TheBoringWorker-HUD DisplayManager.swift
+//  Created by GitHub Copilot on 06/09/25.
+//
+
+import Foundation
+import Cocoa
+
+class SystemDisplayManager {
+    private init() {}
+
+    private static var method = SensorMethod.standard
+
+    static func getDisplayBrightness() throws -> Float {
+        switch SystemDisplayManager.method {
+        case .standard:
+            do {
+                return try getStandardDisplayBrightness()
+            } catch {
+                method = .m1
+            }
+        case .m1:
+            do {
+                return try getM1DisplayBrightness()
+            } catch {
+                method = .allFailed
+            }
+        case .allFailed:
+            throw SensorError.Display.notFound
+        }
+        return try getDisplayBrightness()
+    }
+
+    private static func getStandardDisplayBrightness() throws -> Float {
+        var brightness: float_t = 1
+        let service = IOServiceGetMatchingService(kIOMasterPortDefault, IOServiceMatching("IODisplayConnect"))
+        defer {
+            IOObjectRelease(service)
+        }
+
+        let result = IODisplayGetFloatParameter(service, 0, kIODisplayBrightnessKey as CFString, &brightness)
+        if result != kIOReturnSuccess {
+            throw SensorError.Display.notStandard
+        }
+        return brightness
+    }
+    
+    private static func getM1DisplayBrightness() throws -> Float {
+        let task = Process()
+        task.launchPath = "/usr/libexec/corebrightnessdiag"
+        task.arguments = ["status-info"]
+        let pipe = Pipe()
+        task.standardOutput = pipe
+        try task.run()
+        let data = pipe.fileHandleForReading.readDataToEndOfFile()
+        task.waitUntilExit()
+
+        if let plist = try? PropertyListSerialization.propertyList(from: data, options: [], format: nil) as? NSDictionary,
+           let displays = plist["CBDisplays"] as? [String: [String: Any]] {
+            for display in displays.values {
+                if let displayInfo = display["Display"] as? [String: Any],
+                    displayInfo["DisplayServicesIsBuiltInDisplay"] as? Bool == true,
+                    let brightness = displayInfo["DisplayServicesBrightness"] as? Float {
+                        return brightness
+                }
+            }
+        }
+        throw SensorError.Display.notSilicon
+    }
+}

DynamicIsland/managers/SystemHUDManager.swift

@@ -0,0 +1,82 @@
+//
+//  SystemHUDManager.swift
+//  DynamicIsland
+//
+//  Created by GitHub Copilot on 06/09/25.
+//
+
+import Foundation
+import Defaults
+
+class SystemHUDManager: ObservableObject {
+    static let shared = SystemHUDManager()
+    
+    private var changesObserver: SystemChangesObserver?
+    private weak var coordinator: DynamicIslandViewCoordinator?
+    
+    @Default(.enableSystemHUD) var enableSystemHUD {
+        didSet {
+            Task { @MainActor in
+                if enableSystemHUD {
+                    await startSystemHUD()
+                } else {
+                    await stopSystemHUD()
+                }
+            }
+        }
+    }
+    
+    private init() {}
+    
+    func setup(coordinator: DynamicIslandViewCoordinator) {
+        self.coordinator = coordinator
+        
+        if enableSystemHUD {
+            Task { @MainActor in
+                await startSystemHUD()
+            }
+        }
+    }
+    
+    @MainActor
+    private func startSystemHUD() async {
+        guard let coordinator = coordinator else { return }
+        
+        await stopSystemHUD() // Stop any existing observer
+        
+        changesObserver = SystemChangesObserver(coordinator: coordinator)
+        changesObserver?.startObserving()
+        
+        // Disable system HUD if possible
+        // Note: This would require additional implementation similar to OSDUIManager
+        disableSystemHUD()
+        
+        print("System HUD replacement started")
+    }
+    
+    @MainActor
+    private func stopSystemHUD() async {
+        changesObserver = nil
+        
+        // Re-enable system HUD
+        enableOriginalSystemHUD()
+        
+        print("System HUD replacement stopped")
+    }
+    
+    private func disableSystemHUD() {
+        // Disable the system HUD using SystemOSDManager
+        SystemOSDManager.disableSystemHUD()
+    }
+    
+    private func enableOriginalSystemHUD() {
+        // Re-enable the system HUD using SystemOSDManager
+        SystemOSDManager.enableSystemHUD()
+    }
+    
+    deinit {
+        Task { @MainActor in
+            await stopSystemHUD()
+        }
+    }
+}

DynamicIsland/managers/SystemKeyObserver.swift

@@ -0,0 +1,44 @@
+//
+//  SystemKeyObserver.swift
+//  DynamicIsland
+//
+//  Adapted from TheBoringWorker-HUD KeyPressObserver.swift
+//  Created by GitHub Copilot on 06/09/25.
+//
+
+import Cocoa
+
+class SystemKeyObserver: NSApplication {
+    static let volumeChanged = Notification.Name("DynamicIsland.volumeChanged")
+    static let brightnessChanged = Notification.Name("DynamicIsland.brightnessChanged")
+    static let keyboardIlluminationChanged = Notification.Name("DynamicIsland.keyboardIlluminationChanged")
+
+    override func sendEvent(_ event: NSEvent) {
+        if event.type == .systemDefined && event.subtype.rawValue == 8 {
+            let keyCode = ((event.data1 & 0xFFFF0000) >> 16)
+            let keyFlags = (event.data1 & 0x0000FFFF)
+            // Get the key state. 0xA is KeyDown, OxB is KeyUp
+            let keyState = ((keyFlags & 0xFF00) >> 8) == 0xA
+            let keyRepeat = keyFlags & 0x1
+            mediaKeyEvent(key: Int32(keyCode), state: keyState, keyRepeat: Bool(truncating: keyRepeat as NSNumber))
+        }
+
+        super.sendEvent(event)
+    }
+
+    func mediaKeyEvent(key: Int32, state: Bool, keyRepeat: Bool) {
+        // Only send events on KeyDown. Without this check, these events will happen twice
+        if state {
+            switch key {
+            case NX_KEYTYPE_SOUND_DOWN, NX_KEYTYPE_SOUND_UP, NX_KEYTYPE_MUTE:
+                NotificationCenter.default.post(name: SystemKeyObserver.volumeChanged, object: self)
+            case NX_KEYTYPE_BRIGHTNESS_UP, NX_KEYTYPE_BRIGHTNESS_DOWN:
+                NotificationCenter.default.post(name: SystemKeyObserver.brightnessChanged, object: self)
+            case NX_KEYTYPE_ILLUMINATION_DOWN, NX_KEYTYPE_ILLUMINATION_UP:
+                NotificationCenter.default.post(name: SystemKeyObserver.keyboardIlluminationChanged, object: self)
+            default:
+                break
+            }
+        }
+    }
+}

DynamicIsland/managers/SystemOSDManager.swift

@@ -0,0 +1,47 @@
+//
+//  SystemOSDManager.swift
+//  DynamicIsland
+//
+//  Adapted from TheBoringWorker-HUD OSDUIManager.swift
+//  Created by GitHub Copilot on 06/09/25.
+//
+
+import Foundation
+
+class SystemOSDManager {
+    private init() {}
+
+    /// Re-enables the system HUD by restarting OSDUIHelper
+    public static func enableSystemHUD() {
+        do {
+            let task = Process()
+            task.executableURL = URL(fileURLWithPath: "/usr/bin/killall")
+            task.arguments = ["-9", "OSDUIHelper"]
+            try task.run()
+            print("System HUD re-enabled")
+        } catch {
+            NSLog("Error while trying to re-enable OSDUIHelper. \(error)")
+        }
+    }
+
+    /// Disables the system HUD by stopping OSDUIHelper
+    public static func disableSystemHUD() {
+        do {
+            let kickstart = Process()
+            kickstart.executableURL = URL(fileURLWithPath: "/bin/launchctl")
+            // When macOS boots, OSDUIHelper does not start until a volume button is pressed. We can workaround this by kickstarting it.
+            kickstart.arguments = ["kickstart", "gui/\(getuid())/com.apple.OSDUIHelper"]
+            try kickstart.run()
+            kickstart.waitUntilExit()
+            usleep(500000) // Make sure it started
+            
+            let task = Process()
+            task.executableURL = URL(fileURLWithPath: "/usr/bin/killall")
+            task.arguments = ["-STOP", "OSDUIHelper"]
+            try task.run()
+            print("System HUD disabled")
+        } catch {
+            NSLog("Error while trying to hide OSDUIHelper. Please create an issue on GitHub. Error: \(error)")
+        }
+    }
+}

DynamicIsland/managers/SystemVolumeManager.swift

@@ -0,0 +1,35 @@
+//
+//  SystemVolumeManager.swift
+//  DynamicIsland
+//
+//  Adapted from TheBoringWorker-HUD VolumeManager.swift
+//  Created by GitHub Copilot on 06/09/25.
+//
+
+import Foundation
+
+class SystemVolumeManager {
+    private init() {}
+
+    static func isMuted() -> Bool {
+        do {
+            return try AppleScriptRunner.run(script: "return output muted of (get volume settings)") == "true"
+        } catch {
+            NSLog("Error while trying to retrieve muted properties of device: \(error). Returning default value false.")
+            return false
+        }
+    }
+
+    static func getOutputVolume() -> Float {
+        do {
+            if let volumeStr = Float(try AppleScriptRunner.run(script: "return output volume of (get volume settings)")) {
+                return volumeStr / 100
+            } else {
+                NSLog("Error while trying to parse volume string value. Returning default volume value 1.")
+            }
+        } catch {
+            NSLog("Error while trying to retrieve volume properties of device: \(error). Returning default volume value 1.")
+        }
+        return 0.01
+    }
+}

DynamicIsland/models/Constants.swift

@@ -221,6 +221,13 @@ extension Defaults.Keys {
     // MARK: Keyboard Shortcuts
     static let enableShortcuts = Key<Bool>("enableShortcuts", default: true)
     
+    // MARK: System HUD Feature
+    static let enableSystemHUD = Key<Bool>("enableSystemHUD", default: false)
+    static let enableVolumeHUD = Key<Bool>("enableVolumeHUD", default: true)
+    static let enableBrightnessHUD = Key<Bool>("enableBrightnessHUD", default: true)
+    static let enableKeyboardBacklightHUD = Key<Bool>("enableKeyboardBacklightHUD", default: true)
+    static let systemHUDSensitivity = Key<Int>("systemHUDSensitivity", default: 5)
+    
     // Helper to determine the default media controller based on macOS version
     static var defaultMediaController: MediaControllerType {
         if #available(macOS 15.4, *) {