Enhance mobile suspend MainLoop Notifications

3 files changed, 39 insertions, 0 deletions

diff --git a/platform/ios/app_delegate.mm b/platform/ios/app_delegate.mm
index 8a16f8fcc1..32ebf7be44 100644
--- a/platform/ios/app_delegate.mm
+++ b/platform/ios/app_delegate.mm
@@ -167,6 +167,14 @@ static ViewController *mainViewController = nil;
 	OS_IOS::get_singleton()->on_focus_in();
 }
 
+- (void)applicationDidEnterBackground:(UIApplication *)application {
+	OS_IOS::get_singleton()->on_enter_background();
+}
+
+- (void)applicationWillEnterForeground:(UIApplication *)application {
+	OS_IOS::get_singleton()->on_exit_background();
+}
+
 - (void)dealloc {
 	self.window = nil;
 }
diff --git a/platform/ios/os_ios.h b/platform/ios/os_ios.h
index 06724d763f..9248d30387 100644
--- a/platform/ios/os_ios.h
+++ b/platform/ios/os_ios.h
@@ -129,6 +129,9 @@ public:
 
 	void on_focus_out();
 	void on_focus_in();
+
+	void on_enter_background();
+	void on_exit_background();
 };
 
 #endif // IOS_ENABLED
diff --git a/platform/ios/os_ios.mm b/platform/ios/os_ios.mm
index 6ac21fa9c8..078f8e8494 100644
--- a/platform/ios/os_ios.mm
+++ b/platform/ios/os_ios.mm
@@ -601,6 +601,10 @@ void OS_IOS::on_focus_out() {
 			DisplayServerIOS::get_singleton()->send_window_event(DisplayServer::WINDOW_EVENT_FOCUS_OUT);
 		}
 
+		if (OS::get_singleton()->get_main_loop()) {
+			OS::get_singleton()->get_main_loop()->notification(MainLoop::NOTIFICATION_APPLICATION_FOCUS_OUT);
+		}
+
 		[AppDelegate.viewController.godotView stopRendering];
 
 		audio_driver.stop();
@@ -615,10 +619,34 @@ void OS_IOS::on_focus_in() {
 			DisplayServerIOS::get_singleton()->send_window_event(DisplayServer::WINDOW_EVENT_FOCUS_IN);
 		}
 
+		if (OS::get_singleton()->get_main_loop()) {
+			OS::get_singleton()->get_main_loop()->notification(MainLoop::NOTIFICATION_APPLICATION_FOCUS_IN);
+		}
+
 		[AppDelegate.viewController.godotView startRendering];
 
 		audio_driver.start();
 	}
 }
 
+void OS_IOS::on_enter_background() {
+	// Do not check for is_focused, because on_focus_out will always be fired first by applicationWillResignActive.
+
+	if (OS::get_singleton()->get_main_loop()) {
+		OS::get_singleton()->get_main_loop()->notification(MainLoop::NOTIFICATION_APPLICATION_PAUSED);
+	}
+
+	on_focus_out();
+}
+
+void OS_IOS::on_exit_background() {
+	if (!is_focused) {
+		on_focus_in();
+
+		if (OS::get_singleton()->get_main_loop()) {
+			OS::get_singleton()->get_main_loop()->notification(MainLoop::NOTIFICATION_APPLICATION_RESUMED);
+		}
+	}
+}
+
 #endif // IOS_ENABLED