Basic implementation of emscripten

src/platform/emscripten/mod.rs

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+#![cfg(target_os = "emscripten")]
+
+use GlContext;
+
+pub use api::emscripten::{Window, WindowProxy, MonitorID, get_available_monitors};
+pub use api::emscripten::{get_primary_monitor, WaitEventsIterator, PollEventsIterator};
+
+#[cfg(feature = "headless")]
+pub struct HeadlessContext(Window);
+
+#[cfg(feature = "headless")]
+impl HeadlessContext {
+    /// See the docs in the crate root file.
+    pub fn new(builder: BuilderAttribs) -> Result<HeadlessContext, CreationError> {
+        Window::new(builder).map(|w| HeadlessContext(w))
+    }
+}
+
+#[cfg(feature = "headless")]
+impl GlContext for HeadlessContext {
+    unsafe fn make_current(&self) {
+        self.0.make_current()
+    }
+
+    fn is_current(&self) -> bool {
+        self.0.is_current()
+    }
+
+    fn get_proc_address(&self, addr: &str) -> *const libc::c_void {
+        self.0.get_proc_address(addr)
+    }
+
+    fn swap_buffers(&self) {
+        self.0.swap_buffers()
+    }
+
+    fn get_api(&self) -> Api {
+        self.0.get_api()
+    }
+
+    fn get_pixel_format(&self) -> PixelFormat {
+        self.0.get_pixel_format()
+    }
+}
+
+#[cfg(feature = "headless")]
+unsafe impl Send for HeadlessContext {}
+#[cfg(feature = "headless")]
+unsafe impl Sync for HeadlessContext {}