Working Indicators

DynamicIsland/managers/SystemDisplayManager.swift

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+//
+//  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
+    }
+}