feat:mac os

macos/Sources/Transui/HotkeyManager.swift

@@ -0,0 +1,70 @@
+import Carbon.HIToolbox
+import Foundation
+
+final class HotkeyManager {
+  private var hotkey: EventHotKeyRef?
+  private var handler: EventHandlerRef?
+  private var action: (() -> Void)?
+
+  init() {
+    var type = EventTypeSpec(
+      eventClass: OSType(kEventClassKeyboard),
+      eventKind: UInt32(kEventHotKeyPressed)
+    )
+    InstallEventHandler(
+      GetApplicationEventTarget(),
+      { _, event, context in
+        guard let event, let context else { return noErr }
+        var identifier = EventHotKeyID()
+        let status = GetEventParameter(
+          event,
+          EventParamName(kEventParamDirectObject),
+          EventParamType(typeEventHotKeyID),
+          nil,
+          MemoryLayout<EventHotKeyID>.size,
+          nil,
+          &identifier
+        )
+        guard status == noErr, identifier.id == 1 else { return status }
+        let manager = Unmanaged<HotkeyManager>.fromOpaque(context).takeUnretainedValue()
+        DispatchQueue.main.async { manager.action?() }
+        return noErr
+      },
+      1,
+      &type,
+      Unmanaged.passUnretained(self).toOpaque(),
+      &handler
+    )
+  }
+
+  deinit {
+    unregister()
+    if let handler { RemoveEventHandler(handler) }
+  }
+
+  @discardableResult
+  func register(_ shortcut: HotkeyShortcut, action: @escaping () -> Void) -> Bool {
+    let identifier = EventHotKeyID(signature: Self.signature, id: 1)
+    var candidate: EventHotKeyRef?
+    let status = RegisterEventHotKey(
+      shortcut.keyCode,
+      shortcut.modifiers,
+      identifier,
+      GetApplicationEventTarget(),
+      0,
+      &candidate
+    )
+    guard status == noErr, let candidate else { return false }
+    unregister()
+    hotkey = candidate
+    self.action = action
+    return true
+  }
+
+  private func unregister() {
+    if let hotkey { UnregisterEventHotKey(hotkey) }
+    hotkey = nil
+  }
+
+  private static let signature: OSType = 0x5452_5549  // TRUI
+}