Move monitor functionality out of the main window example

examples/monitors.rs

@@ -0,0 +1,62 @@
+use std::error::Error;
+use winit::{
+    event::{Event, StartCause},
+    event_loop::{ActiveEventLoop, EventLoop},
+};
+
+fn main() -> Result<(), Box<dyn Error>> {
+    let event_loop = EventLoop::new()?;
+
+    Ok(event_loop.run(|event, event_loop| match event {
+        Event::NewEvents(StartCause::Init) => {
+            dump_monitors(event_loop);
+            event_loop.exit()
+        }
+        _ => {}
+    })?)
+}
+
+fn dump_monitors(event_loop: &ActiveEventLoop) {
+    println!("Monitors information");
+    let primary_monitor = event_loop.primary_monitor();
+    for monitor in event_loop.available_monitors() {
+        let intro = if primary_monitor.as_ref() == Some(&monitor) {
+            "Primary monitor"
+        } else {
+            "Monitor"
+        };
+
+        if let Some(name) = monitor.name() {
+            println!("{intro}: {name}");
+        } else {
+            println!("{intro}: [no name]");
+        }
+
+        let size = monitor.size();
+        print!("  Current mode: {}x{}", size.width, size.height);
+        if let Some(m_hz) = monitor.refresh_rate_millihertz() {
+            println!(" @ {}.{} Hz", m_hz / 1000, m_hz % 1000);
+        } else {
+            println!();
+        }
+
+        let position = monitor.position();
+        println!("  Position: {}, {}", position.x, position.y);
+
+        println!("  Scale factor: {}", monitor.scale_factor());
+
+        println!("  Available modes (width x height x bit-depth):");
+        for mode in monitor.video_modes() {
+            let size = mode.size();
+            let m_hz = mode.refresh_rate_millihertz();
+            println!(
+                "    {:04}x{:04}x{:02} @ {:>3}.{} Hz",
+                size.width,
+                size.height,
+                mode.bit_depth(),
+                m_hz / 1000,
+                m_hz % 1000
+            );
+        }
+    }
+}

examples/window.rs

@@ -57,7 +57,6 @@ fn main() -> Result<(), Box<dyn Error>> {
         Event::NewEvents(_) => (),
         Event::Resumed => {
             println!("Resumed the event loop");
-            state.dump_monitors(event_loop);
 
             // Create initial window.
             state
@@ -375,49 +374,6 @@ impl Application {
         println!("Device event: {event:?}");
     }
 
-    fn dump_monitors(&self, event_loop: &ActiveEventLoop) {
-        println!("Monitors information");
-        let primary_monitor = event_loop.primary_monitor();
-        for monitor in event_loop.available_monitors() {
-            let intro = if primary_monitor.as_ref() == Some(&monitor) {
-                "Primary monitor"
-            } else {
-                "Monitor"
-            };
-
-            if let Some(name) = monitor.name() {
-                println!("{intro}: {name}");
-            } else {
-                println!("{intro}: [no name]");
-            }
-
-            let PhysicalSize { width, height } = monitor.size();
-            print!("  Current mode: {width}x{height}");
-            if let Some(m_hz) = monitor.refresh_rate_millihertz() {
-                println!(" @ {}.{} Hz", m_hz / 1000, m_hz % 1000);
-            } else {
-                println!();
-            }
-
-            let PhysicalPosition { x, y } = monitor.position();
-            println!("  Position: {x},{y}");
-
-            println!("  Scale factor: {}", monitor.scale_factor());
-
-            println!("  Available modes (width x height x bit-depth):");
-            for mode in monitor.video_modes() {
-                let PhysicalSize { width, height } = mode.size();
-                let bits = mode.bit_depth();
-                let m_hz = mode.refresh_rate_millihertz();
-                println!(
-                    "    {width}x{height}x{bits} @ {}.{} Hz",
-                    m_hz / 1000,
-                    m_hz % 1000
-                );
-            }
-        }
-    }
-
     /// Process the key binding.
     fn process_key_binding(key: &str, mods: &ModifiersState) -> Option<Action> {
         KEY_BINDINGS.iter().find_map(|binding| {