Replace RenderExpose event with draw method

examples/open_window.rs

@@ -30,9 +30,10 @@ impl baseview::AppWindow for MyProgram {
     ) {
     }
 
+    fn draw(&mut self) {}
+
     fn on_event(&mut self, event: Event) {
         match event {
-            Event::RenderExpose => {}
             Event::CursorMotion(x, y) => {
                 println!("Cursor moved, x: {}, y: {}", x, y);
             }

src/event.rs

@@ -38,7 +38,6 @@ pub struct WindowInfo {
 
 #[derive(Debug)]
 pub enum Event {
-    RenderExpose,
     CursorMotion(i32, i32), // new (x, y) relative to window
     MouseDown(MouseButtonID),
     MouseUp(MouseButtonID),

src/lib.rs

@@ -41,6 +41,7 @@ pub trait AppWindow {
         window: raw_window_handle::RawWindowHandle,
         window_info: &WindowInfo,
     );
+    fn draw(&mut self);
     fn on_event(&mut self, event: Event);
     fn on_app_message(&mut self, message: Self::AppMessage);
 }

src/x11/window.rs

@@ -189,7 +189,7 @@ impl<A: AppWindow> Window<A> {
 
                 match event_type {
                     xcb::EXPOSE => {
-                        self.app_window.on_event(Event::RenderExpose);
+                        self.app_window.draw();
                     }
                     xcb::MOTION_NOTIFY => {
                         let event = unsafe { xcb::cast_event::<xcb::MotionNotifyEvent>(&event) };