add window argument to WindowHandler::on_frame()

examples/open_window.rs

@@ -14,7 +14,7 @@ struct OpenWindowExample {
 }
 
 impl WindowHandler for OpenWindowExample {
-    fn on_frame(&mut self) {
+    fn on_frame(&mut self, _window: &mut Window) {
         while let Ok(message) = self.rx.pop() {
             println!("Message: {:?}", message);
         }

src/macos/window.rs

@@ -218,14 +218,13 @@ impl WindowState {
     }
 
     pub(super) fn trigger_event(&mut self, event: Event) {
-        self.window_handler.on_event(
-            &mut crate::Window::new(&mut self.window),
-            event
-        );
+        self.window_handler
+            .on_event(&mut crate::Window::new(&mut self.window), event);
     }
 
     pub(super) fn trigger_frame(&mut self) {
-        self.window_handler.on_frame()
+        self.window_handler
+            .on_frame(&mut crate::Window::new(&mut self.window));
     }
 
     pub(super) fn process_native_key_event(

src/win/window.rs

@@ -137,7 +137,7 @@ unsafe extern "system" fn wnd_proc(
             WM_TIMER => {
                 match wparam {
                     WIN_FRAME_TIMER => {
-                        (&*window_state_ptr).borrow_mut().handler.on_frame();
+                        (&*window_state_ptr).borrow_mut().handler.on_frame(&mut window);
                     }
                     _ => (),
                 }

src/window.rs

@@ -13,7 +13,7 @@ use crate::win as platform;
 use crate::x11 as platform;
 
 pub trait WindowHandler {
-    fn on_frame(&mut self);
+    fn on_frame(&mut self, window: &mut Window);
     fn on_event(&mut self, window: &mut Window, event: Event);
 }
 

src/x11/window.rs

@@ -273,7 +273,7 @@ impl Window {
         while self.event_loop_running {
             let now = Instant::now();
             let until_next_frame = if now > next_frame {
-                handler.on_frame();
+                handler.on_frame(&mut crate::Window::new(self));
 
                 next_frame = Instant::now() + self.frame_interval;
                 self.frame_interval