2 files changed, 49 insertions, 0 deletions

diff --git a/platform/osx/os_osx.h b/platform/osx/os_osx.h
index d9ad0a7db8..aa8db8f300 100644
--- a/platform/osx/os_osx.h
+++ b/platform/osx/os_osx.h
@@ -167,6 +167,7 @@ public:
 	virtual void set_window_title(const String &p_title);
 
 	virtual Size2 get_window_size() const;
+	virtual Size2 get_real_window_size() const;
 
 	virtual void set_icon(const Ref<Image> &p_icon);
 
@@ -221,6 +222,8 @@ public:
 	virtual bool is_window_minimized() const;
 	virtual void set_window_maximized(bool p_enabled);
 	virtual bool is_window_maximized() const;
+	virtual void set_window_always_on_top(bool p_enabled);
+	virtual bool is_window_always_on_top() const;
 	virtual void request_attention();
 	virtual String get_joy_guid(int p_device) const;
 
@@ -229,6 +232,8 @@ public:
 	virtual void set_ime_position(const Point2 &p_pos);
 	virtual void set_ime_intermediate_text_callback(ImeCallback p_callback, void *p_inp);
 
+	virtual String get_unique_id() const;
+
 	virtual OS::PowerState get_power_state();
 	virtual int get_power_seconds_left();
 	virtual int get_power_percent_left();
diff --git a/platform/osx/os_osx.mm b/platform/osx/os_osx.mm
index ab54f62045..4c459772aa 100644
--- a/platform/osx/os_osx.mm
+++ b/platform/osx/os_osx.mm
@@ -963,6 +963,30 @@ void OS_OSX::set_ime_intermediate_text_callback(ImeCallback p_callback, void *p_
 	}
 }
 
+String OS_OSX::get_unique_id() const {
+
+	static String serial_number;
+
+	if (serial_number.empty()) {
+		io_service_t platformExpert = IOServiceGetMatchingService(kIOMasterPortDefault, IOServiceMatching("IOPlatformExpertDevice"));
+		CFStringRef serialNumberAsCFString = NULL;
+		if (platformExpert) {
+			serialNumberAsCFString = (CFStringRef)IORegistryEntryCreateCFProperty(platformExpert, CFSTR(kIOPlatformSerialNumberKey), kCFAllocatorDefault, 0);
+			IOObjectRelease(platformExpert);
+		}
+
+		NSString *serialNumberAsNSString = nil;
+		if (serialNumberAsCFString) {
+			serialNumberAsNSString = [NSString stringWithString:(NSString *)serialNumberAsCFString];
+			CFRelease(serialNumberAsCFString);
+		}
+
+		serial_number = [serialNumberAsNSString UTF8String];
+	}
+
+	return serial_number;
+}
+
 void OS_OSX::set_ime_position(const Point2 &p_pos) {
 	im_position = p_pos;
 }
@@ -1845,6 +1869,12 @@ Size2 OS_OSX::get_window_size() const {
 	return window_size;
 };
 
+Size2 OS_OSX::get_real_window_size() const {
+
+	NSRect frame = [window_object frame];
+	return Size2(frame.size.width, frame.size.height);
+}
+
 void OS_OSX::set_window_size(const Size2 p_size) {
 
 	Size2 size = p_size;
@@ -1936,6 +1966,20 @@ void OS_OSX::move_window_to_foreground() {
 	[window_object orderFrontRegardless];
 }
 
+void OS_OSX::set_window_always_on_top(bool p_enabled) {
+	if (is_window_always_on_top() == p_enabled)
+		return;
+
+	if (p_enabled)
+		[window_object setLevel:NSFloatingWindowLevel];
+	else
+		[window_object setLevel:NSNormalWindowLevel];
+}
+
+bool OS_OSX::is_window_always_on_top() const {
+	return [window_object level] == NSFloatingWindowLevel;
+}
+
 void OS_OSX::request_attention() {
 
 	[NSApp requestUserAttention:NSCriticalRequest];