Basic window and wasm support

src/lib.rs

@@ -0,0 +1,62 @@
+use winit::{
+    dpi::LogicalSize,
+    event::*,
+    event_loop::{ControlFlow, EventLoop},
+    window::WindowBuilder,
+};
+
+#[cfg(target_arch = "wasm32")]
+use wasm_bindgen::prelude::*;
+
+#[cfg_attr(target_arch = "wasm32", wasm_bindgen(start))]
+pub fn run() {
+    cfg_if::cfg_if! {
+        if #[cfg(target_arch = "wasm32")] {
+            std::panic::set_hook(Box::new(console_error_panic_hook::hook));
+            console_log::init_with_level(log::Level::Warn).expect("Couldn't initialize logger");
+        } else {
+            env_logger::init();
+        }
+    }
+
+    let event_loop = EventLoop::new();
+    let window = WindowBuilder::new()
+        .with_title("Renderer")
+        .with_inner_size(LogicalSize::new(1280, 720))
+        .build(&event_loop)
+        .unwrap();
+
+    #[cfg(target_arch = "wasm32")]
+    {
+        use winit::platform::web::WindowExtWebSys;
+        web_sys::window()
+            .and_then(|win| win.document())
+            .and_then(|doc| {
+                let dst = doc.get_element_by_id("wasm-example")?;
+                let canvas = web_sys::Element::from(window.canvas());
+                dst.append_child(&canvas).ok()?;
+                Some(())
+            })
+            .expect("Couldn't append canvas to document body.");
+    }
+
+    event_loop.run(move |event, _, control_flow| match event {
+        Event::WindowEvent {
+            ref event,
+            window_id,
+        } if window_id == window.id() => match event {
+            WindowEvent::CloseRequested
+            | WindowEvent::KeyboardInput {
+                input:
+                    KeyboardInput {
+                        state: ElementState::Pressed,
+                        virtual_keycode: Some(VirtualKeyCode::Escape),
+                        ..
+                    },
+                ..
+            } => *control_flow = ControlFlow::Exit,
+            _ => {}
+        },
+        _ => {}
+    });
+}

src/main.rs

@@ -1 +1,5 @@
-fn main() {}
+use renderer::run;
+
+fn main() {
+    run();
+}