feat: impl design header

src/winit.rs

@@ -0,0 +1,39 @@
+use i_slint_backend_winit::WinitWindowAccessor;
+use i_slint_backend_winit::winit::dpi::PhysicalPosition;
+use i_slint_backend_winit::winit::monitor::MonitorHandle;
+use i_slint_backend_winit::winit::window::Window;
+
+pub fn center_window(window: &slint::Window) {
+    println!("Centering window");
+    if window.has_winit_window() {
+        println!("Has winit");
+        window.with_winit_window(|window: &Window| {
+            match window.current_monitor() {
+                Some(monitor) => set_centered(window, &monitor),
+                None => (),
+            };
+
+            None as Option<()>
+        });
+    }
+}
+
+fn set_centered(window: &Window, monitor: &MonitorHandle) {
+    let window_size = window.outer_size();
+
+    let monitor_size = monitor.size();
+    let monitor_position = monitor.position();
+
+    println!("Monitor size: {:?}", monitor_size);
+    println!("Window size: {:?}", window_size);
+
+    let mut monitor_window_position = PhysicalPosition { x: 0, y: 0 };
+
+    monitor_window_position.x = (monitor_position.x as f32 + (monitor_size.width as f32 * 0.5)
+        - (window_size.width as f32 * 0.5)) as i32;
+
+    monitor_window_position.y = (monitor_position.y as f32 + (monitor_size.height as f32 * 0.5)
+        - (window_size.height as f32 * 0.5)) as i32;
+
+    window.set_outer_position(monitor_window_position);
+}