Add support for system key capture in windowed mode on macOS

app/streaming/input/input.h

@@ -29,6 +29,25 @@ struct GamepadState {
     unsigned char lt, rt;
 };
 
+#ifdef Q_OS_DARWIN
+#include <CoreGraphics/CGError.h>
+extern "C" {
+    typedef int CGSConnection;
+    typedef enum {
+        CGSGlobalHotKeyEnable = 0,
+        CGSGlobalHotKeyDisable = 1,
+    } CGSGlobalHotKeyOperatingMode;
+
+    extern CGSConnection _CGSDefaultConnection(void);
+
+    extern CGError CGSGetGlobalHotKeyOperatingMode(CGSConnection connection,
+                                                   CGSGlobalHotKeyOperatingMode* mode);
+
+    extern CGError CGSSetGlobalHotKeyOperatingMode(CGSConnection connection,
+                                                   CGSGlobalHotKeyOperatingMode mode);
+}
+#endif
+
 #define MAX_GAMEPADS 4
 #define MAX_FINGERS 2
 
@@ -79,6 +98,8 @@ public:
 
     void notifyFocusLost();
 
+    void notifyFocusGained();
+
     bool isCaptureActive();
 
     bool isSystemKeyCaptureActive();
@@ -167,6 +188,10 @@ private:
     bool m_CaptureSystemKeysEnabled;
     int m_MouseCursorCapturedVisibilityState;
 
+#ifdef Q_OS_DARWIN
+    CGSGlobalHotKeyOperatingMode m_OldHotKeyMode;
+#endif
+
     struct {
         KeyCombo keyCombo;
         SDL_Keycode keyCode;