Implement debug view and load system fonts

winit/src/debug/null.rs

@@ -0,0 +1,48 @@
+#[derive(Debug)]
+pub struct Debug;
+
+impl Debug {
+    pub fn new() -> Self {
+        Self
+    }
+
+    pub fn toggle(&mut self) {}
+
+    pub fn startup_started(&mut self) {}
+
+    pub fn startup_finished(&mut self) {}
+
+    pub fn update_started(&mut self) {}
+
+    pub fn update_finished(&mut self) {}
+
+    pub fn view_started(&mut self) {}
+
+    pub fn view_finished(&mut self) {}
+
+    pub fn layout_started(&mut self) {}
+
+    pub fn layout_finished(&mut self) {}
+
+    pub fn event_processing_started(&mut self) {}
+
+    pub fn event_processing_finished(&mut self) {}
+
+    pub fn draw_started(&mut self) {}
+
+    pub fn draw_finished(&mut self) {}
+
+    pub fn render_started(&mut self) {}
+
+    pub fn render_finished(&mut self) {}
+
+    pub fn log_message<Message: std::fmt::Debug>(
+        &mut self,
+        _message: &Message,
+    ) {
+    }
+
+    pub fn overlay(&self) -> Vec<String> {
+        Vec::new()
+    }
+}