[DisplayServer] Add method to check if native window is focused.

doc/classes/DisplayServer.xml

@@ -1258,6 +1258,13 @@
 				Returns the V-Sync mode of the given window.
 			</description>
 		</method>
+		<method name="window_is_focused" qualifiers="const">
+			<return type="bool" />
+			<param index="0" name="window_id" type="int" default="0" />
+			<description>
+				Returns [code]true[/code] if the window specified by [param window_id] is focused.
+			</description>
+		</method>
 		<method name="window_is_maximize_allowed" qualifiers="const">
 			<return type="bool" />
 			<param index="0" name="window_id" type="int" default="0" />

platform/android/display_server_android.cpp

@@ -453,6 +453,10 @@ void DisplayServerAndroid::window_move_to_foreground(DisplayServer::WindowID p_w
 	// Not supported on Android.
 }
 
+bool DisplayServerAndroid::window_is_focused(WindowID p_window) const {
+	return true;
+}
+
 bool DisplayServerAndroid::window_can_draw(DisplayServer::WindowID p_window) const {
 	return true;
 }

platform/android/display_server_android.h

@@ -178,6 +178,7 @@ public:
 
 	virtual void window_request_attention(WindowID p_window = MAIN_WINDOW_ID) override;
 	virtual void window_move_to_foreground(WindowID p_window = MAIN_WINDOW_ID) override;
+	virtual bool window_is_focused(WindowID p_window = MAIN_WINDOW_ID) const override;
 
 	virtual bool window_can_draw(WindowID p_window = MAIN_WINDOW_ID) const override;
 

platform/ios/display_server_ios.h

@@ -193,6 +193,7 @@ public:
 
 	virtual void window_request_attention(WindowID p_window = MAIN_WINDOW_ID) override;
 	virtual void window_move_to_foreground(WindowID p_window = MAIN_WINDOW_ID) override;
+	virtual bool window_is_focused(WindowID p_window = MAIN_WINDOW_ID) const override;
 
 	virtual float screen_get_max_scale() const override;
 

platform/ios/display_server_ios.mm

@@ -562,6 +562,10 @@ void DisplayServerIOS::window_move_to_foreground(WindowID p_window) {
 	// Probably not supported for iOS
 }
 
+bool DisplayServerIOS::window_is_focused(WindowID p_window) const {
+	return true;
+}
+
 float DisplayServerIOS::screen_get_max_scale() const {
 	return screen_get_scale(SCREEN_OF_MAIN_WINDOW);
 }

platform/linuxbsd/x11/display_server_x11.cpp

@@ -2626,6 +2626,15 @@ void DisplayServerX11::window_move_to_foreground(WindowID p_window) {
 	XFlush(x11_display);
 }
 
+bool DisplayServerX11::window_is_focused(WindowID p_window) const {
+	_THREAD_SAFE_METHOD_
+
+	ERR_FAIL_COND_V(!windows.has(p_window), false);
+	const WindowData &wd = windows[p_window];
+
+	return wd.focused;
+}
+
 bool DisplayServerX11::window_can_draw(WindowID p_window) const {
 	//this seems to be all that is provided by X11
 	return window_get_mode(p_window) != WINDOW_MODE_MINIMIZED;

platform/linuxbsd/x11/display_server_x11.h

@@ -477,6 +477,7 @@ public:
 	virtual void window_request_attention(WindowID p_window = MAIN_WINDOW_ID) override;
 
 	virtual void window_move_to_foreground(WindowID p_window = MAIN_WINDOW_ID) override;
+	virtual bool window_is_focused(WindowID p_window = MAIN_WINDOW_ID) const override;
 
 	virtual bool window_can_draw(WindowID p_window = MAIN_WINDOW_ID) const override;
 

platform/macos/display_server_macos.h

@@ -117,6 +117,7 @@ public:
 		bool no_focus = false;
 		bool is_popup = false;
 		bool mpass = false;
+		bool focused = false;
 
 		Rect2i parent_safe_rect;
 	};
@@ -390,6 +391,7 @@ public:
 
 	virtual void window_request_attention(WindowID p_window = MAIN_WINDOW_ID) override;
 	virtual void window_move_to_foreground(WindowID p_window = MAIN_WINDOW_ID) override;
+	virtual bool window_is_focused(WindowID p_window = MAIN_WINDOW_ID) const override;
 
 	virtual bool window_can_draw(WindowID p_window = MAIN_WINDOW_ID) const override;
 

platform/macos/display_server_macos.mm

@@ -3075,6 +3075,15 @@ void DisplayServerMacOS::window_move_to_foreground(WindowID p_window) {
 	}
 }
 
+bool DisplayServerMacOS::window_is_focused(WindowID p_window) const {
+	_THREAD_SAFE_METHOD_
+
+	ERR_FAIL_COND_V(!windows.has(p_window), false);
+	const WindowData &wd = windows[p_window];
+
+	return wd.focused;
+}
+
 bool DisplayServerMacOS::window_can_draw(WindowID p_window) const {
 	return window_get_mode(p_window) != WINDOW_MODE_MINIMIZED;
 }

platform/macos/godot_window_delegate.mm

@@ -314,6 +314,7 @@
 
 	[self windowDidResize:notification]; // Emit resize event, to ensure content is resized if the window was resized while it was hidden.
 
+	wd.focused = true;
 	ds->set_last_focused_window(window_id);
 	ds->send_window_event(wd, DisplayServerMacOS::WINDOW_EVENT_FOCUS_IN);
 }
@@ -330,6 +331,7 @@
 		[(GodotButtonView *)wd.window_button_view displayButtons];
 	}
 
+	wd.focused = false;
 	ds->release_pressed_events();
 	ds->send_window_event(wd, DisplayServerMacOS::WINDOW_EVENT_FOCUS_OUT);
 }
@@ -342,6 +344,7 @@
 
 	DisplayServerMacOS::WindowData &wd = ds->get_window(window_id);
 
+	wd.focused = false;
 	ds->release_pressed_events();
 	ds->send_window_event(wd, DisplayServerMacOS::WINDOW_EVENT_FOCUS_OUT);
 }
@@ -353,9 +356,11 @@
 	}
 
 	DisplayServerMacOS::WindowData &wd = ds->get_window(window_id);
-
+	if ([wd.window_object isKeyWindow]) {
-	ds->set_last_focused_window(window_id);
+		wd.focused = true;
-	ds->send_window_event(wd, DisplayServerMacOS::WINDOW_EVENT_FOCUS_IN);
+		ds->set_last_focused_window(window_id);
+		ds->send_window_event(wd, DisplayServerMacOS::WINDOW_EVENT_FOCUS_IN);
+	}
 }
 
 @end

platform/web/display_server_web.cpp

@@ -1073,6 +1073,10 @@ void DisplayServerWeb::window_move_to_foreground(WindowID p_window) {
 	// Not supported.
 }
 
+bool DisplayServerWeb::window_is_focused(WindowID p_window) const {
+	return true;
+}
+
 bool DisplayServerWeb::window_can_draw(WindowID p_window) const {
 	return true;
 }

platform/web/display_server_web.h

@@ -211,6 +211,7 @@ public:
 
 	virtual void window_request_attention(WindowID p_window = MAIN_WINDOW_ID) override;
 	virtual void window_move_to_foreground(WindowID p_window = MAIN_WINDOW_ID) override;
+	virtual bool window_is_focused(WindowID p_window = MAIN_WINDOW_ID) const override;
 
 	virtual bool window_can_draw(WindowID p_window = MAIN_WINDOW_ID) const override;
 

platform/windows/display_server_windows.cpp

@@ -1615,6 +1615,15 @@ void DisplayServerWindows::window_move_to_foreground(WindowID p_window) {
 	}
 }
 
+bool DisplayServerWindows::window_is_focused(WindowID p_window) const {
+	_THREAD_SAFE_METHOD_
+
+	ERR_FAIL_COND_V(!windows.has(p_window), false);
+	const WindowData &wd = windows[p_window];
+
+	return wd.window_focused;
+}
+
 bool DisplayServerWindows::window_can_draw(WindowID p_window) const {
 	_THREAD_SAFE_METHOD_
 

platform/windows/display_server_windows.h

@@ -594,6 +594,7 @@ public:
 
 	virtual void window_request_attention(WindowID p_window = MAIN_WINDOW_ID) override;
 	virtual void window_move_to_foreground(WindowID p_window = MAIN_WINDOW_ID) override;
+	virtual bool window_is_focused(WindowID p_window = MAIN_WINDOW_ID) const override;
 
 	virtual bool window_can_draw(WindowID p_window = MAIN_WINDOW_ID) const override;
 

scene/main/window.cpp

@@ -616,6 +616,8 @@ void Window::_update_from_window() {
 void Window::_clear_window() {
 	ERR_FAIL_COND(window_id == DisplayServer::INVALID_WINDOW_ID);
 
+	bool had_focus = has_focus();
+
 	DisplayServer::get_singleton()->window_set_rect_changed_callback(Callable(), window_id);
 	DisplayServer::get_singleton()->window_set_window_event_callback(Callable(), window_id);
 	DisplayServer::get_singleton()->window_set_input_event_callback(Callable(), window_id);
@@ -638,7 +640,7 @@ void Window::_clear_window() {
 	window_id = DisplayServer::INVALID_WINDOW_ID;
 
 	// If closing window was focused and has a parent, return focus.
-	if (focused && transient_parent) {
+	if (had_focus && transient_parent) {
 		transient_parent->grab_focus();
 	}
 
@@ -1185,6 +1187,7 @@ void Window::_notification(int p_what) {
 					{
 						position = DisplayServer::get_singleton()->window_get_position(window_id);
 						size = DisplayServer::get_singleton()->window_get_size(window_id);
+						focused = DisplayServer::get_singleton()->window_is_focused(window_id);
 					}
 					_update_window_size(); // Inform DisplayServer of minimum and maximum size.
 					_update_viewport_size(); // Then feed back to the viewport.
@@ -1762,6 +1765,9 @@ void Window::grab_focus() {
 
 bool Window::has_focus() const {
 	ERR_READ_THREAD_GUARD_V(false);
+	if (window_id != DisplayServer::INVALID_WINDOW_ID) {
+		return DisplayServer::get_singleton()->window_is_focused(window_id);
+	}
 	return focused;
 }
 

servers/display_server.cpp

@@ -716,6 +716,7 @@ void DisplayServer::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("window_request_attention", "window_id"), &DisplayServer::window_request_attention, DEFVAL(MAIN_WINDOW_ID));
 
 	ClassDB::bind_method(D_METHOD("window_move_to_foreground", "window_id"), &DisplayServer::window_move_to_foreground, DEFVAL(MAIN_WINDOW_ID));
+	ClassDB::bind_method(D_METHOD("window_is_focused", "window_id"), &DisplayServer::window_is_focused, DEFVAL(MAIN_WINDOW_ID));
 	ClassDB::bind_method(D_METHOD("window_can_draw", "window_id"), &DisplayServer::window_can_draw, DEFVAL(MAIN_WINDOW_ID));
 
 	ClassDB::bind_method(D_METHOD("window_set_transient", "window_id", "parent_window_id"), &DisplayServer::window_set_transient);

servers/display_server.h

@@ -424,6 +424,7 @@ public:
 
 	virtual void window_request_attention(WindowID p_window = MAIN_WINDOW_ID) = 0;
 	virtual void window_move_to_foreground(WindowID p_window = MAIN_WINDOW_ID) = 0;
+	virtual bool window_is_focused(WindowID p_window = MAIN_WINDOW_ID) const = 0;
 
 	virtual void window_set_window_buttons_offset(const Vector2i &p_offset, WindowID p_window = MAIN_WINDOW_ID) {}
 	virtual Vector3i window_get_safe_title_margins(WindowID p_window = MAIN_WINDOW_ID) const { return Vector3i(); }

servers/display_server_headless.h

@@ -119,6 +119,7 @@ public:
 
 	void window_request_attention(WindowID p_window = MAIN_WINDOW_ID) override {}
 	void window_move_to_foreground(WindowID p_window = MAIN_WINDOW_ID) override {}
+	bool window_is_focused(WindowID p_window = MAIN_WINDOW_ID) const override { return true; };
 
 	bool window_can_draw(WindowID p_window = MAIN_WINDOW_ID) const override { return false; }