Create reorganization

src/api/android/ffi.rs

@@ -0,0 +1,130 @@
+#![allow(dead_code)]
+#![allow(non_snake_case)]
+#![allow(non_camel_case_types)]
+#![allow(non_upper_case_globals)]
+
+use libc;
+
+pub mod egl {
+    pub type khronos_utime_nanoseconds_t = super::khronos_utime_nanoseconds_t;
+    pub type khronos_uint64_t = super::khronos_uint64_t;
+    pub type khronos_ssize_t = super::khronos_ssize_t;
+    pub type EGLNativeDisplayType = super::EGLNativeDisplayType;
+    pub type EGLNativePixmapType = super::EGLNativePixmapType;
+    pub type EGLNativeWindowType = super::EGLNativeWindowType;
+    pub type EGLint = super::EGLint;
+    pub type NativeDisplayType = super::EGLNativeDisplayType;
+    pub type NativePixmapType = super::EGLNativePixmapType;
+    pub type NativeWindowType = super::EGLNativeWindowType;
+
+    include!(concat!(env!("OUT_DIR"), "/egl_bindings.rs"));
+}
+
+pub type khronos_utime_nanoseconds_t = khronos_uint64_t;
+pub type khronos_uint64_t = libc::uint64_t;
+pub type khronos_ssize_t = libc::c_long;
+pub type EGLint = libc::int32_t;
+pub type EGLNativeDisplayType = *const libc::c_void;
+pub type EGLNativePixmapType = *const libc::c_void;     // FIXME: egl_native_pixmap_t instead
+pub type EGLNativeWindowType = *const ANativeWindow;
+
+#[link(name = "android")]
+#[link(name = "EGL")]
+#[link(name = "GLESv2")]
+extern {}
+
+/**
+ * asset_manager.h
+ */
+pub type AAssetManager = ();
+
+/**
+ * native_window.h
+ */
+pub type ANativeWindow = ();
+
+extern {
+    pub fn ANativeWindow_getHeight(window: *const ANativeWindow) -> libc::int32_t;
+    pub fn ANativeWindow_getWidth(window: *const ANativeWindow) -> libc::int32_t;
+}
+
+/**
+ * native_activity.h
+ */
+pub type JavaVM = ();
+pub type JNIEnv = ();
+pub type jobject = *const libc::c_void;
+
+pub type AInputQueue = ();  // FIXME: wrong
+pub type ARect = ();  // FIXME: wrong
+
+#[repr(C)]
+pub struct ANativeActivity {
+    pub callbacks: *mut ANativeActivityCallbacks,
+    pub vm: *mut JavaVM,
+    pub env: *mut JNIEnv,
+    pub clazz: jobject,
+    pub internalDataPath: *const libc::c_char,
+    pub externalDataPath: *const libc::c_char,
+    pub sdkVersion: libc::int32_t,
+    pub instance: *mut libc::c_void,
+    pub assetManager: *mut AAssetManager,
+    pub obbPath: *const libc::c_char,
+}
+
+#[repr(C)]
+pub struct ANativeActivityCallbacks {
+    pub onStart: extern fn(*mut ANativeActivity),
+    pub onResume: extern fn(*mut ANativeActivity),
+    pub onSaveInstanceState: extern fn(*mut ANativeActivity, *mut libc::size_t),
+    pub onPause: extern fn(*mut ANativeActivity),
+    pub onStop: extern fn(*mut ANativeActivity),
+    pub onDestroy: extern fn(*mut ANativeActivity),
+    pub onWindowFocusChanged: extern fn(*mut ANativeActivity, libc::c_int),
+    pub onNativeWindowCreated: extern fn(*mut ANativeActivity, *const ANativeWindow),
+    pub onNativeWindowResized: extern fn(*mut ANativeActivity, *const ANativeWindow),
+    pub onNativeWindowRedrawNeeded: extern fn(*mut ANativeActivity, *const ANativeWindow),
+    pub onNativeWindowDestroyed: extern fn(*mut ANativeActivity, *const ANativeWindow),
+    pub onInputQueueCreated: extern fn(*mut ANativeActivity, *mut AInputQueue),
+    pub onInputQueueDestroyed: extern fn(*mut ANativeActivity, *mut AInputQueue),
+    pub onContentRectChanged: extern fn(*mut ANativeActivity, *const ARect),
+    pub onConfigurationChanged: extern fn(*mut ANativeActivity),
+    pub onLowMemory: extern fn(*mut ANativeActivity),
+}
+
+/**
+ * looper.h
+ */
+pub type ALooper = ();
+
+#[link(name = "android")]
+extern {
+    pub fn ALooper_forThread() -> *const ALooper;
+    pub fn ALooper_acquire(looper: *const ALooper);
+    pub fn ALooper_release(looper: *const ALooper);
+    pub fn ALooper_prepare(opts: libc::c_int) -> *const ALooper;
+    pub fn ALooper_pollOnce(timeoutMillis: libc::c_int, outFd: *mut libc::c_int,
+        outEvents: *mut libc::c_int, outData: *mut *mut libc::c_void) -> libc::c_int;
+    pub fn ALooper_pollAll(timeoutMillis: libc::c_int, outFd: *mut libc::c_int,
+        outEvents: *mut libc::c_int, outData: *mut *mut libc::c_void) -> libc::c_int;
+    pub fn ALooper_wake(looper: *const ALooper);
+    pub fn ALooper_addFd(looper: *const ALooper, fd: libc::c_int, ident: libc::c_int,
+        events: libc::c_int, callback: ALooper_callbackFunc, data: *mut libc::c_void)
+        -> libc::c_int;
+    pub fn ALooper_removeFd(looper: *const ALooper, fd: libc::c_int) -> libc::c_int;
+}
+
+pub const ALOOPER_PREPARE_ALLOW_NON_CALLBACKS: libc::c_int = 1 << 0;
+
+pub const ALOOPER_POLL_WAKE: libc::c_int = -1;
+pub const ALOOPER_POLL_CALLBACK: libc::c_int = -2;
+pub const ALOOPER_POLL_TIMEOUT: libc::c_int = -3;
+pub const ALOOPER_POLL_ERROR: libc::c_int = -4;
+
+pub const ALOOPER_EVENT_INPUT: libc::c_int = 1 << 0;
+pub const ALOOPER_EVENT_OUTPUT: libc::c_int = 1 << 1;
+pub const ALOOPER_EVENT_ERROR: libc::c_int = 1 << 2;
+pub const ALOOPER_EVENT_HANGUP: libc::c_int = 1 << 3;
+pub const ALOOPER_EVENT_INVALID: libc::c_int = 1 << 4;
+
+pub type ALooper_callbackFunc = extern fn(libc::c_int, libc::c_int, *mut libc::c_void) -> libc::c_int;

src/api/android/mod.rs

@@ -0,0 +1,405 @@
+#![cfg(target_os = "android")]
+
+extern crate android_glue;
+
+use libc;
+use std::ffi::{CString};
+use std::sync::mpsc::{Receiver, channel};
+use {CreationError, Event, MouseCursor};
+use CreationError::OsError;
+use events::ElementState::{Pressed, Released};
+use events::Event::{MouseInput, MouseMoved};
+use events::MouseButton;
+
+use std::collections::VecDeque;
+
+use Api;
+use BuilderAttribs;
+use CursorState;
+use GlRequest;
+use PixelFormat;
+use native_monitor::NativeMonitorId;
+
+pub struct Window {
+    display: ffi::egl::types::EGLDisplay,
+    context: ffi::egl::types::EGLContext,
+    surface: ffi::egl::types::EGLSurface,
+    event_rx: Receiver<android_glue::Event>,
+}
+
+pub struct MonitorID;
+
+mod ffi;
+
+pub fn get_available_monitors() -> VecDeque <MonitorID> {
+    let mut rb = VecDeque::new();
+    rb.push_back(MonitorID);
+    rb
+}
+
+pub fn get_primary_monitor() -> MonitorID {
+    MonitorID
+}
+
+impl MonitorID {
+    pub fn get_name(&self) -> Option<String> {
+        Some("Primary".to_string())
+    }
+
+    pub fn get_native_identifier(&self) -> NativeMonitorId {
+        NativeMonitorId::Unavailable
+    }
+
+    pub fn get_dimensions(&self) -> (u32, u32) {
+        unimplemented!()
+    }
+}
+
+#[cfg(feature = "headless")]
+pub struct HeadlessContext(i32);
+
+#[cfg(feature = "headless")]
+impl HeadlessContext {
+    /// See the docs in the crate root file.
+    pub fn new(_builder: BuilderAttribs) -> Result<HeadlessContext, CreationError> {
+        unimplemented!()
+    }
+
+    /// See the docs in the crate root file.
+    pub unsafe fn make_current(&self) {
+        unimplemented!()
+    }
+
+    /// See the docs in the crate root file.
+    pub fn is_current(&self) -> bool {
+        unimplemented!()
+    }
+
+    /// See the docs in the crate root file.
+    pub fn get_proc_address(&self, _addr: &str) -> *const () {
+        unimplemented!()
+    }
+
+    pub fn get_api(&self) -> ::Api {
+        ::Api::OpenGlEs
+    }
+}
+
+#[cfg(feature = "headless")]
+unsafe impl Send for HeadlessContext {}
+#[cfg(feature = "headless")]
+unsafe impl Sync for HeadlessContext {}
+
+pub struct PollEventsIterator<'a> {
+    window: &'a Window,
+}
+
+impl<'a> Iterator for PollEventsIterator<'a> {
+    type Item = Event;
+
+    fn next(&mut self) -> Option<Event> {
+        match self.window.event_rx.try_recv() {
+            Ok(event) => {
+                match event {
+                    android_glue::Event::EventDown => Some(MouseInput(Pressed, MouseButton::Left)),
+                    android_glue::Event::EventUp => Some(MouseInput(Released, MouseButton::Left)),
+                    android_glue::Event::EventMove(x, y) => Some(MouseMoved((x as i32, y as i32))),
+                    _ => None,
+                }
+            }
+            Err(_) => {
+                None
+            }
+        }
+    }
+}
+
+pub struct WaitEventsIterator<'a> {
+    window: &'a Window,
+}
+
+impl<'a> Iterator for WaitEventsIterator<'a> {
+    type Item = Event;
+
+    fn next(&mut self) -> Option<Event> {
+        loop {
+            // calling poll_events()
+            if let Some(ev) = self.window.poll_events().next() {
+                return Some(ev);
+            }
+
+            // TODO: Implement a proper way of sleeping on the event queue
+            // timer::sleep(Duration::milliseconds(16));
+        }
+    }
+}
+
+impl Window {
+    pub fn new(builder: BuilderAttribs) -> Result<Window, CreationError> {
+        use std::{mem, ptr};
+
+        if builder.sharing.is_some() {
+            unimplemented!()
+        }
+
+        let native_window = unsafe { android_glue::get_native_window() };
+        if native_window.is_null() {
+            return Err(OsError(format!("Android's native window is null")));
+        }
+
+        let display = unsafe {
+            let display = ffi::egl::GetDisplay(mem::transmute(ffi::egl::DEFAULT_DISPLAY));
+            if display.is_null() {
+                return Err(OsError("No EGL display connection available".to_string()));
+            }
+            display
+        };
+
+        android_glue::write_log("eglGetDisplay succeeded");
+
+        let (_major, _minor) = unsafe {
+            let mut major: ffi::egl::types::EGLint = mem::uninitialized();
+            let mut minor: ffi::egl::types::EGLint = mem::uninitialized();
+
+            if ffi::egl::Initialize(display, &mut major, &mut minor) == 0 {
+                return Err(OsError(format!("eglInitialize failed")))
+            }
+
+            (major, minor)
+        };
+
+        android_glue::write_log("eglInitialize succeeded");
+
+        let use_gles2 = match builder.gl_version {
+            GlRequest::Specific(Api::OpenGlEs, (2, _)) => true,
+            GlRequest::Specific(Api::OpenGlEs, _) => false,
+            GlRequest::Specific(_, _) => panic!("Only OpenGL ES is supported"),     // FIXME: return a result
+            GlRequest::GlThenGles { opengles_version: (2, _), .. } => true,
+            _ => false,
+        };
+
+        let mut attribute_list = vec!();
+
+        if use_gles2 {
+            attribute_list.push(ffi::egl::RENDERABLE_TYPE as i32);
+            attribute_list.push(ffi::egl::OPENGL_ES2_BIT as i32);
+        }
+
+        {
+            let (red, green, blue) = match builder.color_bits.unwrap_or(24) {
+                24 => (8, 8, 8),
+                16 => (6, 5, 6),
+                _ => panic!("Bad color_bits"),
+            };
+            attribute_list.push(ffi::egl::RED_SIZE as i32);
+            attribute_list.push(red);
+            attribute_list.push(ffi::egl::GREEN_SIZE as i32);
+            attribute_list.push(green);
+            attribute_list.push(ffi::egl::BLUE_SIZE as i32);
+            attribute_list.push(blue);
+        }
+
+        attribute_list.push(ffi::egl::DEPTH_SIZE as i32);
+        attribute_list.push(builder.depth_bits.unwrap_or(8) as i32);
+
+        attribute_list.push(ffi::egl::NONE as i32);
+
+        let config = unsafe {
+            let mut num_config: ffi::egl::types::EGLint = mem::uninitialized();
+            let mut config: ffi::egl::types::EGLConfig = mem::uninitialized();
+            if ffi::egl::ChooseConfig(display, attribute_list.as_ptr(), &mut config, 1,
+                &mut num_config) == 0
+            {
+                return Err(OsError(format!("eglChooseConfig failed")))
+            }
+
+            if num_config <= 0 {
+                return Err(OsError(format!("eglChooseConfig returned no available config")))
+            }
+
+            config
+        };
+
+        android_glue::write_log("eglChooseConfig succeeded");
+
+        let context = unsafe {
+            let mut context_attributes = vec!();
+            if use_gles2 {
+                context_attributes.push(ffi::egl::CONTEXT_CLIENT_VERSION as i32);
+                context_attributes.push(2);
+            }
+            context_attributes.push(ffi::egl::NONE as i32);
+
+            let context = ffi::egl::CreateContext(display, config, ptr::null(),
+                                                  context_attributes.as_ptr());
+            if context.is_null() {
+                return Err(OsError(format!("eglCreateContext failed")))
+            }
+            context
+        };
+
+        android_glue::write_log("eglCreateContext succeeded");
+
+        let surface = unsafe {
+            let surface = ffi::egl::CreateWindowSurface(display, config, native_window, ptr::null());
+            if surface.is_null() {
+                return Err(OsError(format!("eglCreateWindowSurface failed")))
+            }
+            surface
+        };
+
+        android_glue::write_log("eglCreateWindowSurface succeeded");
+
+        let (tx, rx) = channel();
+        android_glue::add_sender(tx);
+
+        Ok(Window {
+            display: display,
+            context: context,
+            surface: surface,
+            event_rx: rx,
+        })
+    }
+
+    pub fn is_closed(&self) -> bool {
+        false
+    }
+
+    pub fn set_title(&self, _: &str) {
+    }
+
+    pub fn show(&self) {
+    }
+
+    pub fn hide(&self) {
+    }
+
+    pub fn get_position(&self) -> Option<(i32, i32)> {
+        None
+    }
+
+    pub fn set_position(&self, _x: i32, _y: i32) {
+    }
+
+    pub fn get_inner_size(&self) -> Option<(u32, u32)> {
+        let native_window = unsafe { android_glue::get_native_window() };
+
+        if native_window.is_null() {
+            None
+        } else {
+            Some((
+                unsafe { ffi::ANativeWindow_getWidth(native_window) } as u32,
+                unsafe { ffi::ANativeWindow_getHeight(native_window) } as u32
+            ))
+        }
+    }
+
+    pub fn get_outer_size(&self) -> Option<(u32, u32)> {
+        self.get_inner_size()
+    }
+
+    pub fn set_inner_size(&self, _x: u32, _y: u32) {
+    }
+
+    pub fn create_window_proxy(&self) -> WindowProxy {
+        WindowProxy
+    }
+
+    pub fn poll_events(&self) -> PollEventsIterator {
+        PollEventsIterator {
+            window: self
+        }
+    }
+
+    pub fn wait_events(&self) -> WaitEventsIterator {
+        WaitEventsIterator {
+            window: self
+        }
+    }
+
+    pub fn make_current(&self) {
+        unsafe {
+            ffi::egl::MakeCurrent(self.display, self.surface, self.surface, self.context);
+        }
+    }
+
+    pub fn is_current(&self) -> bool {
+        unsafe { ffi::egl::GetCurrentContext() == self.context }
+    }
+
+    pub fn get_proc_address(&self, addr: &str) -> *const () {
+        let addr = CString::new(addr.as_bytes()).unwrap();
+        let addr = addr.as_ptr();
+        unsafe {
+            ffi::egl::GetProcAddress(addr) as *const ()
+        }
+    }
+
+    pub fn swap_buffers(&self) {
+        unsafe {
+            ffi::egl::SwapBuffers(self.display, self.surface);
+        }
+    }
+
+    pub fn platform_display(&self) -> *mut libc::c_void {
+        self.display as *mut libc::c_void
+    }
+
+    pub fn platform_window(&self) -> *mut libc::c_void {
+        unimplemented!()
+    }
+
+    pub fn get_api(&self) -> ::Api {
+        ::Api::OpenGlEs
+    }
+
+    pub fn get_pixel_format(&self) -> PixelFormat {
+        unimplemented!();
+    }
+
+    pub fn set_window_resize_callback(&mut self, _: Option<fn(u32, u32)>) {
+    }
+
+    pub fn set_cursor(&self, _: MouseCursor) {
+    }
+
+    pub fn set_cursor_state(&self, state: CursorState) -> Result<(), String> {
+        Ok(())
+    }
+
+    pub fn hidpi_factor(&self) -> f32 {
+        1.0
+    }
+
+    pub fn set_cursor_position(&self, x: i32, y: i32) -> Result<(), ()> {
+        unimplemented!();
+    }
+}
+
+unsafe impl Send for Window {}
+unsafe impl Sync for Window {}
+
+#[cfg(feature = "window")]
+#[derive(Clone)]
+pub struct WindowProxy;
+
+impl WindowProxy {
+    pub fn wakeup_event_loop(&self) {
+        unimplemented!()
+    }
+}
+
+impl Drop for Window {
+    fn drop(&mut self) {
+        use std::ptr;
+
+        unsafe {
+            // we don't call MakeCurrent(0, 0) because we are not sure that the context
+            // is still the current one
+            android_glue::write_log("Destroying gl-init window");
+            ffi::egl::DestroySurface(self.display, self.surface);
+            ffi::egl::DestroyContext(self.display, self.context);
+            ffi::egl::Terminate(self.display);
+        }
+    }
+}

src/api/cocoa/event.rs

@@ -0,0 +1,136 @@
+use events;
+
+pub fn vkeycode_to_element(code: u16) -> Option<events::VirtualKeyCode> {
+    Some(match code {
+        0x00 => events::VirtualKeyCode::A,
+        0x01 => events::VirtualKeyCode::S,
+        0x02 => events::VirtualKeyCode::D,
+        0x03 => events::VirtualKeyCode::F,
+        0x04 => events::VirtualKeyCode::H,
+        0x05 => events::VirtualKeyCode::G,
+        0x06 => events::VirtualKeyCode::Z,
+        0x07 => events::VirtualKeyCode::X,
+        0x08 => events::VirtualKeyCode::C,
+        0x09 => events::VirtualKeyCode::V,
+        //0x0a => World 1,
+        0x0b => events::VirtualKeyCode::B,
+        0x0c => events::VirtualKeyCode::Q,
+        0x0d => events::VirtualKeyCode::W,
+        0x0e => events::VirtualKeyCode::E,
+        0x0f => events::VirtualKeyCode::R,
+        0x10 => events::VirtualKeyCode::Y,
+        0x11 => events::VirtualKeyCode::T,
+        0x12 => events::VirtualKeyCode::Key1,
+        0x13 => events::VirtualKeyCode::Key2,
+        0x14 => events::VirtualKeyCode::Key3,
+        0x15 => events::VirtualKeyCode::Key4,
+        0x16 => events::VirtualKeyCode::Key6,
+        0x17 => events::VirtualKeyCode::Key5,
+        0x18 => events::VirtualKeyCode::Equals,
+        0x19 => events::VirtualKeyCode::Key9,
+        0x1a => events::VirtualKeyCode::Key7,
+        0x1b => events::VirtualKeyCode::Minus,
+        0x1c => events::VirtualKeyCode::Key8,
+        0x1d => events::VirtualKeyCode::Key0,
+        0x1e => events::VirtualKeyCode::RBracket,
+        0x1f => events::VirtualKeyCode::O,
+        0x20 => events::VirtualKeyCode::U,
+        0x21 => events::VirtualKeyCode::LBracket,
+        0x22 => events::VirtualKeyCode::I,
+        0x23 => events::VirtualKeyCode::P,
+        0x24 => events::VirtualKeyCode::Return,
+        0x25 => events::VirtualKeyCode::L,
+        0x26 => events::VirtualKeyCode::J,
+        0x27 => events::VirtualKeyCode::Apostrophe,
+        0x28 => events::VirtualKeyCode::K,
+        0x29 => events::VirtualKeyCode::Semicolon,
+        0x2a => events::VirtualKeyCode::Backslash,
+        0x2b => events::VirtualKeyCode::Comma,
+        0x2c => events::VirtualKeyCode::Slash,
+        0x2d => events::VirtualKeyCode::N,
+        0x2e => events::VirtualKeyCode::M,
+        0x2f => events::VirtualKeyCode::Period,
+        0x30 => events::VirtualKeyCode::Tab,
+        0x31 => events::VirtualKeyCode::Space,
+        0x32 => events::VirtualKeyCode::Grave,
+        0x33 => events::VirtualKeyCode::Back,
+        //0x34 => unkown,
+        0x35 => events::VirtualKeyCode::Escape,
+        0x36 => events::VirtualKeyCode::RWin,
+        0x37 => events::VirtualKeyCode::LWin,
+        0x38 => events::VirtualKeyCode::LShift,
+        //0x39 => Caps lock,
+        //0x3a => Left alt,
+        0x3b => events::VirtualKeyCode::LControl,
+        0x3c => events::VirtualKeyCode::RShift,
+        //0x3d => Right alt,
+        0x3e => events::VirtualKeyCode::RControl,
+        //0x3f => Fn key,
+        //0x40 => F17 Key,
+        0x41 => events::VirtualKeyCode::Decimal,
+        //0x42 -> unkown,
+        0x43 => events::VirtualKeyCode::Multiply,
+        //0x44 => unkown,
+        0x45 => events::VirtualKeyCode::Add,
+        //0x46 => unkown,
+        0x47 => events::VirtualKeyCode::Numlock,
+        //0x48 => KeypadClear,
+        0x49 => events::VirtualKeyCode::VolumeUp,
+        0x4a => events::VirtualKeyCode::VolumeDown,
+        0x4b => events::VirtualKeyCode::Divide,
+        0x4c => events::VirtualKeyCode::NumpadEnter,
+        //0x4d => unkown,
+        0x4e => events::VirtualKeyCode::Subtract,
+        //0x4f => F18 key,
+        //0x50 => F19 Key,
+        0x51 => events::VirtualKeyCode::NumpadEquals,
+        0x52 => events::VirtualKeyCode::Numpad0,
+        0x53 => events::VirtualKeyCode::Numpad1,
+        0x54 => events::VirtualKeyCode::Numpad2,
+        0x55 => events::VirtualKeyCode::Numpad3,
+        0x56 => events::VirtualKeyCode::Numpad4,
+        0x57 => events::VirtualKeyCode::Numpad5,
+        0x58 => events::VirtualKeyCode::Numpad6,
+        0x59 => events::VirtualKeyCode::Numpad7,
+        //0x5a => F20 Key,
+        0x5b => events::VirtualKeyCode::Numpad8,
+        0x5c => events::VirtualKeyCode::Numpad9,
+        //0x5d => unkown,
+        //0x5e => unkown,
+        //0x5f => unkown,
+        0x60 => events::VirtualKeyCode::F5,
+        0x61 => events::VirtualKeyCode::F6,
+        0x62 => events::VirtualKeyCode::F7,
+        0x63 => events::VirtualKeyCode::F3,
+        0x64 => events::VirtualKeyCode::F8,
+        0x65 => events::VirtualKeyCode::F9,
+        //0x66 => unkown,
+        0x67 => events::VirtualKeyCode::F11,
+        //0x68 => unkown,
+        0x69 => events::VirtualKeyCode::F13,
+        //0x6a => F16 Key,
+        0x6b => events::VirtualKeyCode::F14,
+        //0x6c => unkown,
+        0x6d => events::VirtualKeyCode::F10,
+        //0x6e => unkown,
+        0x6f => events::VirtualKeyCode::F12,
+        //0x70 => unkown,
+        0x71 => events::VirtualKeyCode::F15,
+        0x72 => events::VirtualKeyCode::Insert,
+        0x73 => events::VirtualKeyCode::Home,
+        0x74 => events::VirtualKeyCode::PageUp,
+        0x75 => events::VirtualKeyCode::Delete,
+        0x76 => events::VirtualKeyCode::F4,
+        0x77 => events::VirtualKeyCode::End,
+        0x78 => events::VirtualKeyCode::F2,
+        0x79 => events::VirtualKeyCode::PageDown,
+        0x7a => events::VirtualKeyCode::F1,
+        0x7b => events::VirtualKeyCode::Left,
+        0x7c => events::VirtualKeyCode::Right,
+        0x7d => events::VirtualKeyCode::Down,
+        0x7e => events::VirtualKeyCode::Up,
+        //0x7f =>  unkown,
+
+        _ => return None,
+    })
+}

src/api/cocoa/headless.rs

@@ -0,0 +1,110 @@
+use CreationError;
+use CreationError::OsError;
+use BuilderAttribs;
+use libc;
+use std::ptr;
+
+use core_foundation::base::TCFType;
+use core_foundation::string::CFString;
+use core_foundation::bundle::{CFBundleGetBundleWithIdentifier, CFBundleGetFunctionPointerForName};
+use cocoa::base::{id, nil};
+use cocoa::appkit::*;
+
+mod gl {
+    include!(concat!(env!("OUT_DIR"), "/gl_bindings.rs"));
+}
+
+static mut framebuffer: u32 = 0;
+static mut texture: u32 = 0;
+
+pub struct HeadlessContext {
+    width: u32,
+    height: u32,
+    context: id,
+}
+
+impl HeadlessContext {
+    pub fn new(builder: BuilderAttribs) -> Result<HeadlessContext, CreationError> {
+        let (width, height) = builder.dimensions.unwrap_or((1024, 768));
+        let context = unsafe {
+            let attributes = [
+                NSOpenGLPFAAccelerated as u32,
+                NSOpenGLPFAAllowOfflineRenderers as u32,
+                NSOpenGLPFADoubleBuffer as u32,
+                0
+            ];
+
+            let pixelformat = NSOpenGLPixelFormat::alloc(nil).initWithAttributes_(&attributes);
+            if pixelformat == nil {
+                return Err(OsError(format!("Could not create the pixel format")));
+            }
+            let context = NSOpenGLContext::alloc(nil).initWithFormat_shareContext_(pixelformat, nil);
+            if context == nil {
+                return Err(OsError(format!("Could not create the rendering context")));
+            }
+            context
+        };
+
+        let headless = HeadlessContext {
+            width: width,
+            height: height,
+            context: context,
+        };
+
+        // Load the function pointers as we need them to create the FBO
+        gl::load_with(|s| headless.get_proc_address(s) as *const libc::c_void);
+
+        Ok(headless)
+    }
+
+    pub unsafe fn make_current(&self) {
+        self.context.makeCurrentContext();
+
+        gl::GenFramebuffersEXT(1, &mut framebuffer);
+        gl::BindFramebufferEXT(gl::FRAMEBUFFER_EXT, framebuffer);
+        gl::GenTextures(1, &mut texture);
+        gl::BindTexture(gl::TEXTURE_2D, texture);
+        gl::TexParameteri(gl::TEXTURE_2D, gl::TEXTURE_MAG_FILTER, gl::LINEAR as i32);
+        gl::TexParameteri(gl::TEXTURE_2D, gl::TEXTURE_MIN_FILTER, gl::LINEAR as i32);
+        gl::TexImage2D(gl::TEXTURE_2D, 0, gl::RGBA8 as i32, self.width as i32, self.height as i32,
+                       0, gl::RGBA, gl::UNSIGNED_BYTE, ptr::null());
+        gl::FramebufferTexture2DEXT(gl::FRAMEBUFFER_EXT, gl::COLOR_ATTACHMENT0_EXT,
+                                    gl::TEXTURE_2D, texture, 0);
+        let status = gl::CheckFramebufferStatusEXT(gl::FRAMEBUFFER_EXT);
+        if status != gl::FRAMEBUFFER_COMPLETE_EXT {
+            panic!("Error while creating the framebuffer");
+        }
+    }
+
+    pub fn is_current(&self) -> bool {
+        unimplemented!()
+    }
+
+    pub fn get_proc_address(&self, _addr: &str) -> *const () {
+        let symbol_name: CFString = _addr.parse().unwrap();
+        let framework_name: CFString = "com.apple.opengl".parse().unwrap();
+        let framework = unsafe {
+            CFBundleGetBundleWithIdentifier(framework_name.as_concrete_TypeRef())
+        };
+        let symbol = unsafe {
+            CFBundleGetFunctionPointerForName(framework, symbol_name.as_concrete_TypeRef())
+        };
+        symbol as *const ()
+    }
+
+    pub fn get_api(&self) -> ::Api {
+        ::Api::OpenGl
+    }
+}
+
+unsafe impl Send for HeadlessContext {}
+unsafe impl Sync for HeadlessContext {}
+
+impl Drop for HeadlessContext {
+    fn drop(&mut self) {
+        unsafe {
+            gl::DeleteTextures(1, &texture);
+            gl::DeleteFramebuffersEXT(1, &framebuffer);
+        }
+    }
+}

src/api/cocoa/mod.rs

@@ -0,0 +1,741 @@
+#![cfg(target_os = "macos")]
+
+#[cfg(feature = "headless")]
+pub use self::headless::HeadlessContext;
+
+use {CreationError, Event, MouseCursor, CursorState};
+use CreationError::OsError;
+use libc;
+
+use Api;
+use BuilderAttribs;
+use GlRequest;
+use PixelFormat;
+use native_monitor::NativeMonitorId;
+
+use objc::runtime::{Class, Object, Sel, BOOL, YES, NO};
+use objc::declare::ClassDecl;
+
+use cocoa::base::{id, nil};
+use cocoa::foundation::{NSAutoreleasePool, NSDate, NSDefaultRunLoopMode, NSPoint, NSRect, NSSize, 
+                        NSString, NSUInteger}; 
+use cocoa::appkit;
+use cocoa::appkit::*;
+use cocoa::appkit::NSEventSubtype::*;
+
+use core_foundation::base::TCFType;
+use core_foundation::string::CFString;
+use core_foundation::bundle::{CFBundleGetBundleWithIdentifier, CFBundleGetFunctionPointerForName};
+
+use std::ffi::CStr;
+use std::collections::VecDeque;
+use std::str::FromStr;
+use std::str::from_utf8;
+use std::sync::Mutex;
+use std::ascii::AsciiExt;
+use std::ops::Deref;
+
+use events::Event::{Awakened, MouseInput, MouseMoved, ReceivedCharacter, KeyboardInput, MouseWheel, Closed};
+use events::ElementState::{Pressed, Released};
+use events::MouseButton;
+use events;
+
+pub use self::monitor::{MonitorID, get_available_monitors, get_primary_monitor};
+
+mod monitor;
+mod event;
+
+#[cfg(feature = "headless")]
+mod headless;
+
+static mut shift_pressed: bool = false;
+static mut ctrl_pressed: bool = false;
+static mut win_pressed: bool = false;
+static mut alt_pressed: bool = false;
+
+struct DelegateState {
+    is_closed: bool,
+    context: IdRef,
+    view: IdRef,
+    window: IdRef,
+    resize_handler: Option<fn(u32, u32)>,
+
+    /// Events that have been retreived with XLib but not dispatched with iterators yet
+    pending_events: Mutex<VecDeque<Event>>,
+}
+
+struct WindowDelegate {
+    state: Box<DelegateState>,
+    _this: IdRef,
+}
+
+impl WindowDelegate {
+    /// Get the delegate class, initiailizing it neccessary
+    fn class() -> *const Class {
+        use std::sync::{Once, ONCE_INIT};
+
+        extern fn window_should_close(this: &Object, _: Sel, _: id) -> BOOL {
+            unsafe {
+                let state: *mut libc::c_void = *this.get_ivar("glutinState");
+                let state = state as *mut DelegateState;
+                (*state).is_closed = true;
+
+                (*state).pending_events.lock().unwrap().push_back(Closed);
+            }
+            YES
+        }
+
+        extern fn window_did_resize(this: &Object, _: Sel, _: id) {
+            unsafe {
+                let state: *mut libc::c_void = *this.get_ivar("glutinState");
+                let state = &mut *(state as *mut DelegateState);
+
+                let _: () = msg_send![*state.context, update];
+
+                if let Some(handler) = state.resize_handler {
+                    let rect = NSView::frame(*state.view);
+                    let scale_factor = NSWindow::backingScaleFactor(*state.window) as f32;
+                    (handler)((scale_factor * rect.size.width as f32) as u32,
+                              (scale_factor * rect.size.height as f32) as u32);
+                }
+            }
+        }
+
+        static mut delegate_class: *const Class = 0 as *const Class;
+        static INIT: Once = ONCE_INIT;
+
+        INIT.call_once(|| unsafe {
+            // Create new NSWindowDelegate
+            let superclass = Class::get("NSObject").unwrap();
+            let mut decl = ClassDecl::new(superclass, "GlutinWindowDelegate").unwrap();
+
+            // Add callback methods
+            decl.add_method(sel!(windowShouldClose:),
+                window_should_close as extern fn(&Object, Sel, id) -> BOOL);
+            decl.add_method(sel!(windowDidResize:),
+                window_did_resize as extern fn(&Object, Sel, id));
+
+            // Store internal state as user data
+            decl.add_ivar::<*mut libc::c_void>("glutinState");
+
+            delegate_class = decl.register();
+        });
+
+        unsafe {
+            delegate_class
+        }
+    }
+
+    fn new(state: DelegateState) -> WindowDelegate {
+        // Box the state so we can give a pointer to it
+        let mut state = Box::new(state);
+        let state_ptr: *mut DelegateState = &mut *state;
+        unsafe {
+            let delegate = IdRef::new(msg_send![WindowDelegate::class(), new]);
+
+            (&mut **delegate).set_ivar("glutinState", state_ptr as *mut libc::c_void);
+            let _: () = msg_send![*state.window, setDelegate:*delegate];
+
+            WindowDelegate { state: state, _this: delegate }
+        }
+    }
+}
+
+impl Drop for WindowDelegate {
+    fn drop(&mut self) {
+        unsafe {
+            // Nil the window's delegate so it doesn't still reference us
+            let _: () = msg_send![*self.state.window, setDelegate:nil];
+        }
+    }
+}
+
+pub struct Window {
+    view: IdRef,
+    window: IdRef,
+    context: IdRef,
+    delegate: WindowDelegate,
+}
+
+#[cfg(feature = "window")]
+unsafe impl Send for Window {}
+#[cfg(feature = "window")]
+unsafe impl Sync for Window {}
+
+#[cfg(feature = "window")]
+#[derive(Clone)]
+pub struct WindowProxy;
+
+impl WindowProxy {
+    pub fn wakeup_event_loop(&self) {
+        unsafe {
+            let pool = NSAutoreleasePool::new(nil);
+            let event =
+                NSEvent::otherEventWithType_location_modifierFlags_timestamp_windowNumber_context_subtype_data1_data2_(
+                    nil, NSApplicationDefined, NSPoint::new(0.0, 0.0), NSEventModifierFlags::empty(),
+                    0.0, 0, nil, NSApplicationActivatedEventType, 0, 0);
+            NSApp().postEvent_atStart_(event, YES);
+            pool.drain();
+        }
+    }
+}
+
+pub struct PollEventsIterator<'a> {
+    window: &'a Window,
+}
+
+impl<'a> Iterator for PollEventsIterator<'a> {
+    type Item = Event;
+
+    fn next(&mut self) -> Option<Event> {
+        if let Some(ev) = self.window.delegate.state.pending_events.lock().unwrap().pop_front() {
+            return Some(ev);
+        }
+
+        unsafe {
+            let event = NSApp().nextEventMatchingMask_untilDate_inMode_dequeue_(
+                NSAnyEventMask.bits(),
+                NSDate::distantPast(nil),
+                NSDefaultRunLoopMode,
+                YES);
+            if event == nil { return None; }
+            NSApp().sendEvent_(event);
+
+            let event = match msg_send![event, type] {
+                NSLeftMouseDown         => { Some(MouseInput(Pressed, MouseButton::Left)) },
+                NSLeftMouseUp           => { Some(MouseInput(Released, MouseButton::Left)) },
+                NSRightMouseDown        => { Some(MouseInput(Pressed, MouseButton::Right)) },
+                NSRightMouseUp          => { Some(MouseInput(Released, MouseButton::Right)) },
+                NSMouseMoved            |
+                NSLeftMouseDragged      |
+                NSOtherMouseDragged     |
+                NSRightMouseDragged     => {
+                    let window_point = event.locationInWindow();
+                    let window: id = msg_send![event, window];
+                    let view_point = if window == nil {
+                        let window_rect = self.window.window.convertRectFromScreen_(NSRect::new(window_point, NSSize::new(0.0, 0.0)));
+                        self.window.view.convertPoint_fromView_(window_rect.origin, nil)
+                    } else {
+                        self.window.view.convertPoint_fromView_(window_point, nil)
+                    };
+                    let view_rect = NSView::frame(*self.window.view);
+                    let scale_factor = self.window.hidpi_factor();
+                    Some(MouseMoved(((scale_factor * view_point.x as f32) as i32,
+                                    (scale_factor * (view_rect.size.height - view_point.y) as f32) as i32)))
+                },
+                NSKeyDown               => {
+                    let mut events = VecDeque::new();
+                    let received_c_str = event.characters().UTF8String();
+                    let received_str = CStr::from_ptr(received_c_str);
+                    for received_char in from_utf8(received_str.to_bytes()).unwrap().chars() {
+                        if received_char.is_ascii() {
+                            events.push_back(ReceivedCharacter(received_char));
+                        }
+                    }
+
+                    let vkey =  event::vkeycode_to_element(NSEvent::keyCode(event));
+                    events.push_back(KeyboardInput(Pressed, NSEvent::keyCode(event) as u8, vkey));
+                    let event = events.pop_front();
+                    self.window.delegate.state.pending_events.lock().unwrap().extend(events.into_iter());
+                    event
+                },
+                NSKeyUp                 => {
+                    let vkey =  event::vkeycode_to_element(NSEvent::keyCode(event));
+                    Some(KeyboardInput(Released, NSEvent::keyCode(event) as u8, vkey))
+                },
+                NSFlagsChanged          => {
+                    let mut events = VecDeque::new();
+                    let shift_modifier = Window::modifier_event(event, appkit::NSShiftKeyMask, events::VirtualKeyCode::LShift, shift_pressed);
+                    if shift_modifier.is_some() {
+                        shift_pressed = !shift_pressed;
+                        events.push_back(shift_modifier.unwrap());
+                    }
+                    let ctrl_modifier = Window::modifier_event(event, appkit::NSControlKeyMask, events::VirtualKeyCode::LControl, ctrl_pressed);
+                    if ctrl_modifier.is_some() {
+                        ctrl_pressed = !ctrl_pressed;
+                        events.push_back(ctrl_modifier.unwrap());
+                    }
+                    let win_modifier = Window::modifier_event(event, appkit::NSCommandKeyMask, events::VirtualKeyCode::LWin, win_pressed);
+                    if win_modifier.is_some() {
+                        win_pressed = !win_pressed;
+                        events.push_back(win_modifier.unwrap());
+                    }
+                    let alt_modifier = Window::modifier_event(event, appkit::NSAlternateKeyMask, events::VirtualKeyCode::LAlt, alt_pressed);
+                    if alt_modifier.is_some() {
+                        alt_pressed = !alt_pressed;
+                        events.push_back(alt_modifier.unwrap());
+                    }
+                    let event = events.pop_front();
+                    self.window.delegate.state.pending_events.lock().unwrap().extend(events.into_iter());
+                    event
+                },
+                NSScrollWheel           => { Some(MouseWheel(event.scrollingDeltaY() as i32)) },
+                _                       => { None },
+            };
+
+
+
+            event
+        }
+    }
+}
+
+pub struct WaitEventsIterator<'a> {
+    window: &'a Window,
+}
+
+impl<'a> Iterator for WaitEventsIterator<'a> {
+    type Item = Event;
+
+    fn next(&mut self) -> Option<Event> {
+        loop {
+            if let Some(ev) = self.window.delegate.state.pending_events.lock().unwrap().pop_front() {
+                return Some(ev);
+            }
+
+            unsafe {
+                let event = NSApp().nextEventMatchingMask_untilDate_inMode_dequeue_(
+                    NSAnyEventMask.bits(),
+                    NSDate::distantFuture(nil),
+                    NSDefaultRunLoopMode,
+                    NO);
+            }
+
+            // calling poll_events()
+            if let Some(ev) = self.window.poll_events().next() {
+                return Some(ev);
+            } else {
+                return Some(Awakened);
+            }
+        }
+    }
+}
+
+impl Window {
+    #[cfg(feature = "window")]
+    pub fn new(builder: BuilderAttribs) -> Result<Window, CreationError> {
+        if builder.sharing.is_some() {
+            unimplemented!()
+        }
+
+        let app = match Window::create_app() {
+            Some(app) => app,
+            None      => { return Err(OsError(format!("Couldn't create NSApplication"))); },
+        };
+        let window = match Window::create_window(builder.dimensions.unwrap_or((800, 600)),
+                                                 &*builder.title,
+                                                 builder.monitor)
+        {
+            Some(window) => window,
+            None         => { return Err(OsError(format!("Couldn't create NSWindow"))); },
+        };
+        let view = match Window::create_view(*window) {
+            Some(view) => view,
+            None       => { return Err(OsError(format!("Couldn't create NSView"))); },
+        };
+
+        let context = match Window::create_context(*view, builder.vsync, builder.gl_version) {
+            Some(context) => context,
+            None          => { return Err(OsError(format!("Couldn't create OpenGL context"))); },
+        };
+
+        unsafe {
+            app.activateIgnoringOtherApps_(YES);
+            if builder.visible {
+                window.makeKeyAndOrderFront_(nil);
+            } else {
+                window.makeKeyWindow();
+            }
+        }
+
+        let ds = DelegateState {
+            is_closed: false,
+            context: context.clone(),
+            view: view.clone(),
+            window: window.clone(),
+            resize_handler: None,
+            pending_events: Mutex::new(VecDeque::new()),
+        };
+
+        let window = Window {
+            view: view,
+            window: window,
+            context: context,
+            delegate: WindowDelegate::new(ds),
+        };
+
+        Ok(window)
+    }
+
+    fn create_app() -> Option<id> {
+        unsafe {
+            let app = NSApp();
+            if app == nil {
+                None
+            } else {
+                app.setActivationPolicy_(NSApplicationActivationPolicyRegular);
+                app.finishLaunching();
+                Some(app)
+            }
+        }
+    }
+
+    fn create_window(dimensions: (u32, u32), title: &str, monitor: Option<MonitorID>) -> Option<IdRef> {
+        unsafe {
+            let screen = monitor.map(|monitor_id| {
+                let native_id = match monitor_id.get_native_identifier() {
+                    NativeMonitorId::Numeric(num) => num,
+                    _ => panic!("OS X monitors should always have a numeric native ID")
+                };
+                let matching_screen = {
+                    let screens = NSScreen::screens(nil);
+                    let count: NSUInteger = msg_send![screens, count];
+                    let key = IdRef::new(NSString::alloc(nil).init_str("NSScreenNumber"));
+                    let mut matching_screen: Option<id> = None;
+                    for i in (0..count) {
+                        let screen = msg_send![screens, objectAtIndex:i as NSUInteger];
+                        let device_description = NSScreen::deviceDescription(screen);
+                        let value: id = msg_send![device_description, objectForKey:*key];
+                        if value != nil {
+                            let screen_number: NSUInteger = msg_send![value, unsignedIntegerValue];
+                            if screen_number as u32 == native_id {
+                                matching_screen = Some(screen);
+                                break;
+                            }
+                        }
+                    }
+                    matching_screen
+                };
+                matching_screen.unwrap_or(NSScreen::mainScreen(nil))
+            });
+            let frame = match screen {
+                Some(screen) => NSScreen::frame(screen),
+                None => {
+                    let (width, height) = dimensions;
+                    NSRect::new(NSPoint::new(0., 0.), NSSize::new(width as f64, height as f64))
+                }
+            };
+
+            let masks = if screen.is_some() {
+                NSBorderlessWindowMask as NSUInteger
+            } else {
+                NSTitledWindowMask as NSUInteger |
+                NSClosableWindowMask as NSUInteger |
+                NSMiniaturizableWindowMask as NSUInteger |
+                NSResizableWindowMask as NSUInteger
+            };
+
+            let window = IdRef::new(NSWindow::alloc(nil).initWithContentRect_styleMask_backing_defer_(
+                frame,
+                masks,
+                NSBackingStoreBuffered,
+                NO,
+            ));
+            window.non_nil().map(|window| {
+                let title = IdRef::new(NSString::alloc(nil).init_str(title));
+                window.setTitle_(*title);
+                window.setAcceptsMouseMovedEvents_(YES);
+                if screen.is_some() {
+                    window.setLevel_(NSMainMenuWindowLevel as i64 + 1);
+                }
+                else {
+                    window.center();
+                }
+                window
+            })
+        }
+    }
+
+    fn create_view(window: id) -> Option<IdRef> {
+        unsafe {
+            let view = IdRef::new(NSView::alloc(nil).init());
+            view.non_nil().map(|view| {
+                view.setWantsBestResolutionOpenGLSurface_(YES);
+                window.setContentView_(*view);
+                view
+            })
+        }
+    }
+
+    fn create_context(view: id, vsync: bool, gl_version: GlRequest) -> Option<IdRef> {
+        let profile = match gl_version {
+            GlRequest::Latest => NSOpenGLProfileVersion4_1Core as u32,
+            GlRequest::Specific(Api::OpenGl, (1 ... 2, _)) => NSOpenGLProfileVersionLegacy as u32,
+            GlRequest::Specific(Api::OpenGl, (3, 0)) => NSOpenGLProfileVersionLegacy as u32,
+            GlRequest::Specific(Api::OpenGl, (3, 1 ... 2)) => NSOpenGLProfileVersion3_2Core as u32,
+            GlRequest::Specific(Api::OpenGl, _) => NSOpenGLProfileVersion4_1Core as u32,
+            GlRequest::Specific(_, _) => panic!("Only the OpenGL API is supported"),    // FIXME: return Result
+            GlRequest::GlThenGles { opengl_version: (1 ... 2, _), .. } => NSOpenGLProfileVersionLegacy as u32,
+            GlRequest::GlThenGles { opengl_version: (3, 0), .. } => NSOpenGLProfileVersionLegacy as u32,
+            GlRequest::GlThenGles { opengl_version: (3, 1 ... 2), .. } => NSOpenGLProfileVersion3_2Core as u32,
+            GlRequest::GlThenGles { .. } => NSOpenGLProfileVersion4_1Core as u32,
+        };
+        unsafe {
+            let attributes = [
+                NSOpenGLPFADoubleBuffer as u32,
+                NSOpenGLPFAClosestPolicy as u32,
+                NSOpenGLPFAColorSize as u32, 24,
+                NSOpenGLPFAAlphaSize as u32, 8,
+                NSOpenGLPFADepthSize as u32, 24,
+                NSOpenGLPFAStencilSize as u32, 8,
+                NSOpenGLPFAOpenGLProfile as u32, profile,
+                0
+            ];
+
+            let pixelformat = IdRef::new(NSOpenGLPixelFormat::alloc(nil).initWithAttributes_(&attributes));
+            pixelformat.non_nil().map(|pixelformat| {
+                let context = IdRef::new(NSOpenGLContext::alloc(nil).initWithFormat_shareContext_(*pixelformat, nil));
+                context.non_nil().map(|context| {
+                    context.setView_(view);
+                    if vsync {
+                        let value = 1;
+                        context.setValues_forParameter_(&value, NSOpenGLContextParameter::NSOpenGLCPSwapInterval);
+                    }
+                    context
+                })
+            }).unwrap_or(None)
+        }
+    }
+
+    pub fn is_closed(&self) -> bool {
+        self.delegate.state.is_closed
+    }
+
+    pub fn set_title(&self, title: &str) {
+        unsafe {
+            let title = IdRef::new(NSString::alloc(nil).init_str(title));
+            self.window.setTitle_(*title);
+        }
+    }
+
+    pub fn show(&self) {
+        unsafe { NSWindow::makeKeyAndOrderFront_(*self.window, nil); }
+    }
+
+    pub fn hide(&self) {
+        unsafe { NSWindow::orderOut_(*self.window, nil); }
+    }
+
+    pub fn get_position(&self) -> Option<(i32, i32)> {
+        unsafe {
+            let content_rect = NSWindow::contentRectForFrameRect_(*self.window, NSWindow::frame(*self.window));
+            // NOTE: coordinate system might be inconsistent with other backends
+            Some((content_rect.origin.x as i32, content_rect.origin.y as i32))
+        }
+    }
+
+    pub fn set_position(&self, x: i32, y: i32) {
+        unsafe {
+            // NOTE: coordinate system might be inconsistent with other backends
+            NSWindow::setFrameOrigin_(*self.window, NSPoint::new(x as f64, y as f64));
+        }
+    }
+
+    pub fn get_inner_size(&self) -> Option<(u32, u32)> {
+        unsafe {
+            let view_frame = NSView::frame(*self.view);
+            Some((view_frame.size.width as u32, view_frame.size.height as u32))
+        }
+    }
+
+    pub fn get_outer_size(&self) -> Option<(u32, u32)> {
+        unsafe {
+            let window_frame = NSWindow::frame(*self.window);
+            Some((window_frame.size.width as u32, window_frame.size.height as u32))
+        }
+    }
+
+    pub fn set_inner_size(&self, width: u32, height: u32) {
+        unsafe {
+            NSWindow::setContentSize_(*self.window, NSSize::new(width as f64, height as f64));
+        }
+    }
+
+    pub fn create_window_proxy(&self) -> WindowProxy {
+        WindowProxy
+    }
+
+    pub fn poll_events(&self) -> PollEventsIterator {
+        PollEventsIterator {
+            window: self
+        }
+    }
+
+    pub fn wait_events(&self) -> WaitEventsIterator {
+        WaitEventsIterator {
+            window: self
+        }
+    }
+
+    unsafe fn modifier_event(event: id, keymask: NSEventModifierFlags, key: events::VirtualKeyCode, key_pressed: bool) -> Option<Event> {
+        if !key_pressed && NSEvent::modifierFlags(event).contains(keymask) {
+            return Some(KeyboardInput(Pressed, NSEvent::keyCode(event) as u8, Some(key)));
+        } else if key_pressed && !NSEvent::modifierFlags(event).contains(keymask) {
+            return Some(KeyboardInput(Released, NSEvent::keyCode(event) as u8, Some(key)));
+        }
+
+        return None;
+    }
+
+    pub unsafe fn make_current(&self) {
+        let _: () = msg_send![*self.context, update];
+        self.context.makeCurrentContext();
+    }
+
+    pub fn is_current(&self) -> bool {
+        unsafe {
+            let current = NSOpenGLContext::currentContext(nil);
+            if current != nil {
+                let is_equal: BOOL = msg_send![current, isEqual:*self.context];
+                is_equal != NO
+            } else {
+                false
+            }
+        }
+    }
+
+    pub fn get_proc_address(&self, _addr: &str) -> *const () {
+        let symbol_name: CFString = FromStr::from_str(_addr).unwrap();
+        let framework_name: CFString = FromStr::from_str("com.apple.opengl").unwrap();
+        let framework = unsafe {
+            CFBundleGetBundleWithIdentifier(framework_name.as_concrete_TypeRef())
+        };
+        let symbol = unsafe {
+            CFBundleGetFunctionPointerForName(framework, symbol_name.as_concrete_TypeRef())
+        };
+        symbol as *const ()
+    }
+
+    pub fn swap_buffers(&self) {
+        unsafe { self.context.flushBuffer(); }
+    }
+
+    pub fn platform_display(&self) -> *mut libc::c_void {
+        unimplemented!()
+    }
+
+    pub fn platform_window(&self) -> *mut libc::c_void {
+        unimplemented!()
+    }
+
+    pub fn get_api(&self) -> ::Api {
+        ::Api::OpenGl
+    }
+
+    pub fn get_pixel_format(&self) -> PixelFormat {
+        unimplemented!();
+    }
+
+    pub fn set_window_resize_callback(&mut self, callback: Option<fn(u32, u32)>) {
+        self.delegate.state.resize_handler = callback;
+    }
+
+    pub fn set_cursor(&self, cursor: MouseCursor) {
+        let cursor_name = match cursor {                
+            MouseCursor::Arrow | MouseCursor::Default => "arrowCursor",
+            MouseCursor::Hand => "pointingHandCursor",
+            MouseCursor::Grabbing | MouseCursor::Grab => "closedHandCursor",
+            MouseCursor::Text => "IBeamCursor",
+            MouseCursor::VerticalText => "IBeamCursorForVerticalLayout",
+            MouseCursor::Copy => "dragCopyCursor",
+            MouseCursor::Alias => "dragLinkCursor",
+            MouseCursor::NotAllowed | MouseCursor::NoDrop => "operationNotAllowedCursor",
+            MouseCursor::ContextMenu => "contextualMenuCursor",
+            MouseCursor::Crosshair => "crosshairCursor",
+            MouseCursor::EResize => "resizeRightCursor",
+            MouseCursor::NResize => "resizeUpCursor",
+            MouseCursor::WResize => "resizeLeftCursor",
+            MouseCursor::SResize => "resizeDownCursor",
+            MouseCursor::EwResize | MouseCursor::ColResize => "resizeLeftRightCursor",
+            MouseCursor::NsResize | MouseCursor::RowResize => "resizeUpDownCursor",
+
+            /// TODO: Find appropriate OSX cursors
+            MouseCursor::NeResize | MouseCursor::NwResize |
+            MouseCursor::SeResize | MouseCursor::SwResize |
+            MouseCursor::NwseResize | MouseCursor::NeswResize |
+
+            MouseCursor::Cell | MouseCursor::NoneCursor |
+            MouseCursor::Wait | MouseCursor::Progress | MouseCursor::Help |
+            MouseCursor::Move | MouseCursor::AllScroll | MouseCursor::ZoomIn |
+            MouseCursor::ZoomOut => "arrowCursor",
+        };
+        let sel = Sel::register(cursor_name);
+        let cls = Class::get("NSCursor").unwrap();
+        unsafe {
+            use objc::MessageArguments;
+            let cursor: id = ().send(cls as *const _ as id, sel);
+            let _: () = msg_send![cursor, set];
+        }
+    }
+
+    pub fn set_cursor_state(&self, state: CursorState) -> Result<(), String> {
+        let cls = Class::get("NSCursor").unwrap();
+        match state {
+            CursorState::Normal => {
+                let _: () = unsafe { msg_send![cls, unhide] };
+                Ok(())
+            },
+            CursorState::Hide => {
+                let _: () = unsafe { msg_send![cls, hide] };
+                Ok(())
+            },
+            CursorState::Grab => {
+                Err("Mouse grabbing is unimplemented".to_string())
+            }
+        }
+    }
+
+    pub fn hidpi_factor(&self) -> f32 {
+        unsafe {
+            NSWindow::backingScaleFactor(*self.window) as f32
+        }
+    }
+
+    pub fn set_cursor_position(&self, x: i32, y: i32) -> Result<(), ()> {
+        unimplemented!();
+    }
+}
+
+struct IdRef(id);
+
+impl IdRef {
+    fn new(i: id) -> IdRef {
+        IdRef(i)
+    }
+
+    fn retain(i: id) -> IdRef {
+        if i != nil {
+            let _: id = unsafe { msg_send![i, retain] };
+        }
+        IdRef(i)
+    }
+
+    fn non_nil(self) -> Option<IdRef> {
+        if self.0 == nil { None } else { Some(self) }
+    }
+}
+
+impl Drop for IdRef {
+    fn drop(&mut self) {
+        if self.0 != nil {
+            let _: () = unsafe { msg_send![self.0, release] };
+        }
+    }
+}
+
+impl Deref for IdRef {
+    type Target = id;
+    fn deref<'a>(&'a self) -> &'a id {
+        &self.0
+    }
+}
+
+impl Clone for IdRef {
+    fn clone(&self) -> IdRef {
+        if self.0 != nil {
+            let _: id = unsafe { msg_send![self.0, retain] };
+        }
+        IdRef(self.0)
+    }
+}
+

src/api/cocoa/monitor.rs

@@ -0,0 +1,53 @@
+use core_graphics::display;
+use std::collections::VecDeque;
+use native_monitor::NativeMonitorId;
+
+pub struct MonitorID(u32);
+
+pub fn get_available_monitors() -> VecDeque<MonitorID> {
+    let mut monitors = VecDeque::new();
+    unsafe {
+        let max_displays = 10u32;
+        let mut active_displays = [0u32; 10];
+        let mut display_count = 0;
+        display::CGGetActiveDisplayList(max_displays,
+                                                        &mut active_displays[0],
+                                                        &mut display_count);
+        for i in 0..display_count as usize {
+            monitors.push_back(MonitorID(active_displays[i]));
+        }
+    }
+    monitors
+}
+
+pub fn get_primary_monitor() -> MonitorID {
+    let id = unsafe {
+        MonitorID(display::CGMainDisplayID())
+    };
+    id
+}
+
+impl MonitorID {
+    pub fn get_name(&self) -> Option<String> {
+        let MonitorID(display_id) = *self;
+        let screen_num = unsafe {
+            display::CGDisplayModelNumber(display_id)
+        };
+        Some(format!("Monitor #{}", screen_num))
+    }
+
+    pub fn get_native_identifier(&self) -> NativeMonitorId {
+        let MonitorID(display_id) = *self;
+        NativeMonitorId::Numeric(display_id)
+    }
+
+    pub fn get_dimensions(&self) -> (u32, u32) {
+        let MonitorID(display_id) = *self;
+        let dimension = unsafe {
+            let height = display::CGDisplayPixelsHigh(display_id);
+            let width = display::CGDisplayPixelsWide(display_id);
+            (width as u32, height as u32)
+        };
+        dimension
+    }
+}

src/api/mod.rs

@@ -0,0 +1,4 @@
+pub mod android;
+pub mod cocoa;
+pub mod win32;
+pub mod x11;

src/api/win32/callback.rs

@@ -0,0 +1,253 @@
+use std::mem;
+use std::ptr;
+use std::cell::RefCell;
+use std::sync::mpsc::Sender;
+use std::sync::{Arc, Mutex};
+
+use CursorState;
+use Event;
+use super::event;
+
+use user32;
+use winapi;
+
+/// There's no parameters passed to the callback function, so it needs to get
+/// its context (the HWND, the Sender for events, etc.) stashed in
+/// a thread-local variable.
+thread_local!(pub static CONTEXT_STASH: RefCell<Option<ThreadLocalData>> = RefCell::new(None));
+
+pub struct ThreadLocalData {
+    pub win: winapi::HWND,
+    pub sender: Sender<Event>,
+    pub cursor_state: Arc<Mutex<CursorState>>
+}
+
+/// Checks that the window is the good one, and if so send the event to it.
+fn send_event(input_window: winapi::HWND, event: Event) {
+    CONTEXT_STASH.with(|context_stash| {
+        let context_stash = context_stash.borrow();
+        let stored = match *context_stash {
+            None => return,
+            Some(ref v) => v
+        };
+
+        let &ThreadLocalData { ref win, ref sender, .. } = stored;
+
+        if win != &input_window {
+            return;
+        }
+
+        sender.send(event).ok();  // ignoring if closed
+    });
+}
+
+/// This is the callback that is called by `DispatchMessage` in the events loop.
+/// 
+/// Returning 0 tells the Win32 API that the message has been processed.
+pub unsafe extern "system" fn callback(window: winapi::HWND, msg: winapi::UINT,
+                                       wparam: winapi::WPARAM, lparam: winapi::LPARAM)
+                                       -> winapi::LRESULT
+{
+    match msg {
+        winapi::WM_DESTROY => {
+            use events::Event::Closed;
+
+            CONTEXT_STASH.with(|context_stash| {
+                let context_stash = context_stash.borrow();
+                let stored = match *context_stash {
+                    None => return,
+                    Some(ref v) => v
+                };
+
+                let &ThreadLocalData { ref win, .. } = stored;
+
+                if win == &window {
+                    user32::PostQuitMessage(0);
+                }
+            });
+
+            send_event(window, Closed);
+            0
+        },
+
+        winapi::WM_ERASEBKGND => {
+            1
+        },
+
+        winapi::WM_SIZE => {
+            use events::Event::Resized;
+            let w = winapi::LOWORD(lparam as winapi::DWORD) as u32;
+            let h = winapi::HIWORD(lparam as winapi::DWORD) as u32;
+            send_event(window, Resized(w, h));
+            0
+        },
+
+        winapi::WM_MOVE => {
+            use events::Event::Moved;
+            let x = winapi::LOWORD(lparam as winapi::DWORD) as i32;
+            let y = winapi::HIWORD(lparam as winapi::DWORD) as i32;
+            send_event(window, Moved(x, y));
+            0
+        },
+
+        winapi::WM_CHAR => {
+            use std::mem;
+            use events::Event::ReceivedCharacter;
+            let chr: char = mem::transmute(wparam as u32);
+            send_event(window, ReceivedCharacter(chr));
+            0
+        },
+
+        winapi::WM_MOUSEMOVE => {
+            use events::Event::MouseMoved;
+
+            let x = winapi::GET_X_LPARAM(lparam) as i32;
+            let y = winapi::GET_Y_LPARAM(lparam) as i32;
+
+            send_event(window, MouseMoved((x, y)));
+
+            0
+        },
+
+        winapi::WM_MOUSEWHEEL => {
+            use events::Event::MouseWheel;
+
+            let value = (wparam >> 16) as i16;
+            let value = value as i32;
+
+            send_event(window, MouseWheel(value));
+
+            0
+        },
+
+        winapi::WM_KEYDOWN => {
+            use events::Event::KeyboardInput;
+            use events::ElementState::Pressed;
+            let scancode = ((lparam >> 16) & 0xff) as u8;
+            let vkey = event::vkeycode_to_element(wparam);
+            send_event(window, KeyboardInput(Pressed, scancode, vkey));
+            0
+        },
+
+        winapi::WM_KEYUP => {
+            use events::Event::KeyboardInput;
+            use events::ElementState::Released;
+            let scancode = ((lparam >> 16) & 0xff) as u8;
+            let vkey = event::vkeycode_to_element(wparam);
+            send_event(window, KeyboardInput(Released, scancode, vkey));
+            0
+        },
+
+        winapi::WM_LBUTTONDOWN => {
+            use events::Event::MouseInput;
+            use events::MouseButton::Left;
+            use events::ElementState::Pressed;
+            send_event(window, MouseInput(Pressed, Left));
+            0
+        },
+
+        winapi::WM_LBUTTONUP => {
+            use events::Event::MouseInput;
+            use events::MouseButton::Left;
+            use events::ElementState::Released;
+            send_event(window, MouseInput(Released, Left));
+            0
+        },
+
+        winapi::WM_RBUTTONDOWN => {
+            use events::Event::MouseInput;
+            use events::MouseButton::Right;
+            use events::ElementState::Pressed;
+            send_event(window, MouseInput(Pressed, Right));
+            0
+        },
+
+        winapi::WM_RBUTTONUP => {
+            use events::Event::MouseInput;
+            use events::MouseButton::Right;
+            use events::ElementState::Released;
+            send_event(window, MouseInput(Released, Right));
+            0
+        },
+
+        winapi::WM_MBUTTONDOWN => {
+            use events::Event::MouseInput;
+            use events::MouseButton::Middle;
+            use events::ElementState::Pressed;
+            send_event(window, MouseInput(Pressed, Middle));
+            0
+        },
+
+        winapi::WM_MBUTTONUP => {
+            use events::Event::MouseInput;
+            use events::MouseButton::Middle;
+            use events::ElementState::Released;
+            send_event(window, MouseInput(Released, Middle));
+            0
+        },
+
+        winapi::WM_INPUT => {
+            let mut data: winapi::RAWINPUT = mem::uninitialized();
+            let mut data_size = mem::size_of::<winapi::RAWINPUT>() as winapi::UINT;
+            user32::GetRawInputData(mem::transmute(lparam), winapi::RID_INPUT,
+                                    mem::transmute(&mut data), &mut data_size,
+                                    mem::size_of::<winapi::RAWINPUTHEADER>() as winapi::UINT);
+
+            if data.header.dwType == winapi::RIM_TYPEMOUSE {
+                let _x = data.mouse.lLastX;  // FIXME: this is not always the relative movement
+                let _y = data.mouse.lLastY;
+                // TODO: 
+                //send_event(window, Event::MouseRawMovement { x: x, y: y });
+
+                0
+
+            } else {
+                user32::DefWindowProcW(window, msg, wparam, lparam)
+            }
+        },
+
+        winapi::WM_SETFOCUS => {
+            use events::Event::Focused;
+            send_event(window, Focused(true));
+            0
+        },
+
+        winapi::WM_KILLFOCUS => {
+            use events::Event::Focused;
+            send_event(window, Focused(false));
+            0
+        },
+
+        winapi::WM_SETCURSOR => {
+            CONTEXT_STASH.with(|context_stash| {
+                let cstash = context_stash.borrow();
+                let cstash = cstash.as_ref();
+                // there's a very bizarre borrow checker bug
+                // possibly related to rust-lang/rust/#23338
+                let cursor_state = if let Some(cstash) = cstash { 
+                    if let Ok(cursor_state) = cstash.cursor_state.lock() {
+                        match *cursor_state {
+                            CursorState::Normal => {
+                                user32::SetCursor(user32::LoadCursorW(
+                                        ptr::null_mut(),
+                                        winapi::IDC_ARROW));
+                            },
+                            CursorState::Grab | CursorState::Hide => {
+                                user32::SetCursor(ptr::null_mut());
+                            }
+                        }
+                    }
+                } else {
+                    return
+                };
+
+//                let &ThreadLocalData { ref cursor_state, .. } = stored;
+            });
+            0
+        },
+
+        _ => {
+            user32::DefWindowProcW(window, msg, wparam, lparam)
+        }
+    }
+}

src/api/win32/event.rs

@@ -0,0 +1,181 @@
+use events::VirtualKeyCode;
+use winapi;
+
+pub fn vkeycode_to_element(code: winapi::WPARAM) -> Option<VirtualKeyCode> {
+    match code {
+        //winapi::VK_LBUTTON => Some(VirtualKeyCode::Lbutton),
+        //winapi::VK_RBUTTON => Some(VirtualKeyCode::Rbutton),
+        //winapi::VK_CANCEL => Some(VirtualKeyCode::Cancel),
+        //winapi::VK_MBUTTON => Some(VirtualKeyCode::Mbutton),
+        //winapi::VK_XBUTTON1 => Some(VirtualKeyCode::Xbutton1),
+        //winapi::VK_XBUTTON2 => Some(VirtualKeyCode::Xbutton2),
+        winapi::VK_BACK => Some(VirtualKeyCode::Back),
+        winapi::VK_TAB => Some(VirtualKeyCode::Tab),
+        //winapi::VK_CLEAR => Some(VirtualKeyCode::Clear),
+        winapi::VK_RETURN => Some(VirtualKeyCode::Return),
+        //winapi::VK_SHIFT => Some(VirtualKeyCode::Shift),
+        //winapi::VK_CONTROL => Some(VirtualKeyCode::Control),
+        //winapi::VK_MENU => Some(VirtualKeyCode::Menu),
+        winapi::VK_PAUSE => Some(VirtualKeyCode::Pause),
+        winapi::VK_CAPITAL => Some(VirtualKeyCode::Capital),
+        winapi::VK_KANA => Some(VirtualKeyCode::Kana),
+        //winapi::VK_HANGUEL => Some(VirtualKeyCode::Hanguel),
+        //winapi::VK_HANGUL => Some(VirtualKeyCode::Hangul),
+        //winapi::VK_JUNJA => Some(VirtualKeyCode::Junja),
+        //winapi::VK_FINAL => Some(VirtualKeyCode::Final),
+        //winapi::VK_HANJA => Some(VirtualKeyCode::Hanja),
+        winapi::VK_KANJI => Some(VirtualKeyCode::Kanji),
+        winapi::VK_ESCAPE => Some(VirtualKeyCode::Escape),
+        winapi::VK_CONVERT => Some(VirtualKeyCode::Convert),
+        //winapi::VK_NONCONVERT => Some(VirtualKeyCode::Nonconvert),
+        //winapi::VK_ACCEPT => Some(VirtualKeyCode::Accept),
+        //winapi::VK_MODECHANGE => Some(VirtualKeyCode::Modechange),
+        winapi::VK_SPACE => Some(VirtualKeyCode::Space),
+        winapi::VK_PRIOR => Some(VirtualKeyCode::PageUp),
+        winapi::VK_NEXT => Some(VirtualKeyCode::PageDown),
+        winapi::VK_END => Some(VirtualKeyCode::End),
+        winapi::VK_HOME => Some(VirtualKeyCode::Home),
+        winapi::VK_LEFT => Some(VirtualKeyCode::Left),
+        winapi::VK_UP => Some(VirtualKeyCode::Up),
+        winapi::VK_RIGHT => Some(VirtualKeyCode::Right),
+        winapi::VK_DOWN => Some(VirtualKeyCode::Down),
+        //winapi::VK_SELECT => Some(VirtualKeyCode::Select),
+        //winapi::VK_PRINT => Some(VirtualKeyCode::Print),
+        //winapi::VK_EXECUTE => Some(VirtualKeyCode::Execute),
+        winapi::VK_SNAPSHOT => Some(VirtualKeyCode::Snapshot),
+        winapi::VK_INSERT => Some(VirtualKeyCode::Insert),
+        winapi::VK_DELETE => Some(VirtualKeyCode::Delete),
+        //winapi::VK_HELP => Some(VirtualKeyCode::Help),
+        0x30 => Some(VirtualKeyCode::Key0),
+        0x31 => Some(VirtualKeyCode::Key1),
+        0x32 => Some(VirtualKeyCode::Key2),
+        0x33 => Some(VirtualKeyCode::Key3),
+        0x34 => Some(VirtualKeyCode::Key4),
+        0x35 => Some(VirtualKeyCode::Key5),
+        0x36 => Some(VirtualKeyCode::Key6),
+        0x37 => Some(VirtualKeyCode::Key7),
+        0x38 => Some(VirtualKeyCode::Key8),
+        0x39 => Some(VirtualKeyCode::Key9),
+        0x41 => Some(VirtualKeyCode::A),
+        0x42 => Some(VirtualKeyCode::B),
+        0x43 => Some(VirtualKeyCode::C),
+        0x44 => Some(VirtualKeyCode::D),
+        0x45 => Some(VirtualKeyCode::E),
+        0x46 => Some(VirtualKeyCode::F),
+        0x47 => Some(VirtualKeyCode::G),
+        0x48 => Some(VirtualKeyCode::H),
+        0x49 => Some(VirtualKeyCode::I),
+        0x4A => Some(VirtualKeyCode::J),
+        0x4B => Some(VirtualKeyCode::K),
+        0x4C => Some(VirtualKeyCode::L),
+        0x4D => Some(VirtualKeyCode::M),
+        0x4E => Some(VirtualKeyCode::N),
+        0x4F => Some(VirtualKeyCode::O),
+        0x50 => Some(VirtualKeyCode::P),
+        0x51 => Some(VirtualKeyCode::Q),
+        0x52 => Some(VirtualKeyCode::R),
+        0x53 => Some(VirtualKeyCode::S),
+        0x54 => Some(VirtualKeyCode::T),
+        0x55 => Some(VirtualKeyCode::U),
+        0x56 => Some(VirtualKeyCode::V),
+        0x57 => Some(VirtualKeyCode::W),
+        0x58 => Some(VirtualKeyCode::X),
+        0x59 => Some(VirtualKeyCode::Y),
+        0x5A => Some(VirtualKeyCode::Z),
+        //winapi::VK_LWIN => Some(VirtualKeyCode::Lwin),
+        //winapi::VK_RWIN => Some(VirtualKeyCode::Rwin),
+        winapi::VK_APPS => Some(VirtualKeyCode::Apps),
+        winapi::VK_SLEEP => Some(VirtualKeyCode::Sleep),
+        winapi::VK_NUMPAD0 => Some(VirtualKeyCode::Numpad0),
+        winapi::VK_NUMPAD1 => Some(VirtualKeyCode::Numpad1),
+        winapi::VK_NUMPAD2 => Some(VirtualKeyCode::Numpad2),
+        winapi::VK_NUMPAD3 => Some(VirtualKeyCode::Numpad3),
+        winapi::VK_NUMPAD4 => Some(VirtualKeyCode::Numpad4),
+        winapi::VK_NUMPAD5 => Some(VirtualKeyCode::Numpad5),
+        winapi::VK_NUMPAD6 => Some(VirtualKeyCode::Numpad6),
+        winapi::VK_NUMPAD7 => Some(VirtualKeyCode::Numpad7),
+        winapi::VK_NUMPAD8 => Some(VirtualKeyCode::Numpad8),
+        winapi::VK_NUMPAD9 => Some(VirtualKeyCode::Numpad9),
+        winapi::VK_MULTIPLY => Some(VirtualKeyCode::Multiply),
+        winapi::VK_ADD => Some(VirtualKeyCode::Add),
+        //winapi::VK_SEPARATOR => Some(VirtualKeyCode::Separator),
+        winapi::VK_SUBTRACT => Some(VirtualKeyCode::Subtract),
+        winapi::VK_DECIMAL => Some(VirtualKeyCode::Decimal),
+        winapi::VK_DIVIDE => Some(VirtualKeyCode::Divide),
+        winapi::VK_F1 => Some(VirtualKeyCode::F1),
+        winapi::VK_F2 => Some(VirtualKeyCode::F2),
+        winapi::VK_F3 => Some(VirtualKeyCode::F3),
+        winapi::VK_F4 => Some(VirtualKeyCode::F4),
+        winapi::VK_F5 => Some(VirtualKeyCode::F5),
+        winapi::VK_F6 => Some(VirtualKeyCode::F6),
+        winapi::VK_F7 => Some(VirtualKeyCode::F7),
+        winapi::VK_F8 => Some(VirtualKeyCode::F8),
+        winapi::VK_F9 => Some(VirtualKeyCode::F9),
+        winapi::VK_F10 => Some(VirtualKeyCode::F10),
+        winapi::VK_F11 => Some(VirtualKeyCode::F11),
+        winapi::VK_F12 => Some(VirtualKeyCode::F12),
+        winapi::VK_F13 => Some(VirtualKeyCode::F13),
+        winapi::VK_F14 => Some(VirtualKeyCode::F14),
+        winapi::VK_F15 => Some(VirtualKeyCode::F15),
+        /*winapi::VK_F16 => Some(VirtualKeyCode::F16),
+        winapi::VK_F17 => Some(VirtualKeyCode::F17),
+        winapi::VK_F18 => Some(VirtualKeyCode::F18),
+        winapi::VK_F19 => Some(VirtualKeyCode::F19),
+        winapi::VK_F20 => Some(VirtualKeyCode::F20),
+        winapi::VK_F21 => Some(VirtualKeyCode::F21),
+        winapi::VK_F22 => Some(VirtualKeyCode::F22),
+        winapi::VK_F23 => Some(VirtualKeyCode::F23),
+        winapi::VK_F24 => Some(VirtualKeyCode::F24),*/
+        winapi::VK_NUMLOCK => Some(VirtualKeyCode::Numlock),
+        winapi::VK_SCROLL => Some(VirtualKeyCode::Scroll),
+        /*winapi::VK_LSHIFT => Some(VirtualKeyCode::Lshift),
+        winapi::VK_RSHIFT => Some(VirtualKeyCode::Rshift),
+        winapi::VK_LCONTROL => Some(VirtualKeyCode::Lcontrol),
+        winapi::VK_RCONTROL => Some(VirtualKeyCode::Rcontrol),
+        winapi::VK_LMENU => Some(VirtualKeyCode::Lmenu),
+        winapi::VK_RMENU => Some(VirtualKeyCode::Rmenu),
+        winapi::VK_BROWSER_BACK => Some(VirtualKeyCode::Browser_back),
+        winapi::VK_BROWSER_FORWARD => Some(VirtualKeyCode::Browser_forward),
+        winapi::VK_BROWSER_REFRESH => Some(VirtualKeyCode::Browser_refresh),
+        winapi::VK_BROWSER_STOP => Some(VirtualKeyCode::Browser_stop),
+        winapi::VK_BROWSER_SEARCH => Some(VirtualKeyCode::Browser_search),
+        winapi::VK_BROWSER_FAVORITES => Some(VirtualKeyCode::Browser_favorites),
+        winapi::VK_BROWSER_HOME => Some(VirtualKeyCode::Browser_home),
+        winapi::VK_VOLUME_MUTE => Some(VirtualKeyCode::Volume_mute),
+        winapi::VK_VOLUME_DOWN => Some(VirtualKeyCode::Volume_down),
+        winapi::VK_VOLUME_UP => Some(VirtualKeyCode::Volume_up),
+        winapi::VK_MEDIA_NEXT_TRACK => Some(VirtualKeyCode::Media_next_track),
+        winapi::VK_MEDIA_PREV_TRACK => Some(VirtualKeyCode::Media_prev_track),
+        winapi::VK_MEDIA_STOP => Some(VirtualKeyCode::Media_stop),
+        winapi::VK_MEDIA_PLAY_PAUSE => Some(VirtualKeyCode::Media_play_pause),
+        winapi::VK_LAUNCH_MAIL => Some(VirtualKeyCode::Launch_mail),
+        winapi::VK_LAUNCH_MEDIA_SELECT => Some(VirtualKeyCode::Launch_media_select),
+        winapi::VK_LAUNCH_APP1 => Some(VirtualKeyCode::Launch_app1),
+        winapi::VK_LAUNCH_APP2 => Some(VirtualKeyCode::Launch_app2),
+        winapi::VK_OEM_1 => Some(VirtualKeyCode::Oem_1),
+        winapi::VK_OEM_PLUS => Some(VirtualKeyCode::Oem_plus),
+        winapi::VK_OEM_COMMA => Some(VirtualKeyCode::Oem_comma),
+        winapi::VK_OEM_MINUS => Some(VirtualKeyCode::Oem_minus),
+        winapi::VK_OEM_PERIOD => Some(VirtualKeyCode::Oem_period),
+        winapi::VK_OEM_2 => Some(VirtualKeyCode::Oem_2),
+        winapi::VK_OEM_3 => Some(VirtualKeyCode::Oem_3),
+        winapi::VK_OEM_4 => Some(VirtualKeyCode::Oem_4),
+        winapi::VK_OEM_5 => Some(VirtualKeyCode::Oem_5),
+        winapi::VK_OEM_6 => Some(VirtualKeyCode::Oem_6),
+        winapi::VK_OEM_7 => Some(VirtualKeyCode::Oem_7),
+        winapi::VK_OEM_8 => Some(VirtualKeyCode::Oem_8),
+        winapi::VK_OEM_102 => Some(VirtualKeyCode::Oem_102),
+        winapi::VK_PROCESSKEY => Some(VirtualKeyCode::Processkey),
+        winapi::VK_PACKET => Some(VirtualKeyCode::Packet),
+        winapi::VK_ATTN => Some(VirtualKeyCode::Attn),
+        winapi::VK_CRSEL => Some(VirtualKeyCode::Crsel),
+        winapi::VK_EXSEL => Some(VirtualKeyCode::Exsel),
+        winapi::VK_EREOF => Some(VirtualKeyCode::Ereof),
+        winapi::VK_PLAY => Some(VirtualKeyCode::Play),
+        winapi::VK_ZOOM => Some(VirtualKeyCode::Zoom),
+        winapi::VK_NONAME => Some(VirtualKeyCode::Noname),
+        winapi::VK_PA1 => Some(VirtualKeyCode::Pa1),
+        winapi::VK_OEM_CLEAR => Some(VirtualKeyCode::Oem_clear),*/
+        _ => None
+    }
+}

src/api/win32/gl.rs

@@ -0,0 +1,12 @@
+/// WGL bindings
+pub mod wgl {
+    include!(concat!(env!("OUT_DIR"), "/wgl_bindings.rs"));
+}
+
+/// Functions that are not necessarly always available
+pub mod wgl_extra {
+    include!(concat!(env!("OUT_DIR"), "/wgl_extra_bindings.rs"));
+}
+
+#[link(name = "opengl32")]
+extern {}

src/api/win32/headless.rs

@@ -0,0 +1,40 @@
+use super::Window;
+use super::init;
+
+use Api;
+use BuilderAttribs;
+use CreationError;
+
+///
+pub struct HeadlessContext(Window);
+
+impl HeadlessContext {
+    /// See the docs in the crate root file.
+    pub fn new(builder: BuilderAttribs) -> Result<HeadlessContext, CreationError> {
+        let (builder, _) = builder.extract_non_static();
+        init::new_window(builder, None).map(|w| HeadlessContext(w))
+    }
+
+    /// See the docs in the crate root file.
+    pub unsafe fn make_current(&self) {
+        self.0.make_current()
+    }
+
+    /// See the docs in the crate root file.
+    pub fn is_current(&self) -> bool {
+        self.0.is_current()
+    }
+
+    /// See the docs in the crate root file.
+    pub fn get_proc_address(&self, addr: &str) -> *const () {
+        self.0.get_proc_address(addr)
+    }
+
+    /// See the docs in the crate root file.
+    pub fn get_api(&self) -> Api {
+        Api::OpenGl
+    }
+
+    pub fn set_window_resize_callback(&mut self, _: Option<fn(u32, u32)>) {
+    }
+}

src/api/win32/init.rs

@@ -0,0 +1,586 @@
+use std::sync::atomic::AtomicBool;
+use std::sync::{Arc, Mutex};
+use std::io;
+use std::ptr;
+use std::mem;
+use std::thread;
+
+use super::callback;
+use super::Window;
+use super::MonitorID;
+use super::ContextWrapper;
+use super::WindowWrapper;
+use super::make_current_guard::CurrentContextGuard;
+
+use Api;
+use BuilderAttribs;
+use CreationError;
+use CreationError::OsError;
+use CursorState;
+use GlRequest;
+use PixelFormat;
+
+use std::ffi::{CStr, CString, OsStr};
+use std::os::windows::ffi::OsStrExt;
+use std::sync::mpsc::channel;
+
+use libc;
+use super::gl;
+use winapi;
+use kernel32;
+use user32;
+use gdi32;
+
+/// Work-around the fact that HGLRC doesn't implement Send
+pub struct ContextHack(pub winapi::HGLRC);
+unsafe impl Send for ContextHack {}
+
+pub fn new_window(builder: BuilderAttribs<'static>, builder_sharelists: Option<ContextHack>)
+                  -> Result<Window, CreationError>
+{
+    // initializing variables to be sent to the task
+
+    let title = OsStr::new(&builder.title).encode_wide().chain(Some(0).into_iter())
+                                          .collect::<Vec<_>>();
+
+    let (tx, rx) = channel();
+
+    // `GetMessage` must be called in the same thread as CreateWindow, so we create a new thread
+    // dedicated to this window.
+    thread::spawn(move || {
+        unsafe {
+            // creating and sending the `Window`
+            match init(title, builder, builder_sharelists) {
+                Ok(w) => tx.send(Ok(w)).ok(),
+                Err(e) => {
+                    tx.send(Err(e)).ok();
+                    return;
+                }
+            };
+
+            // now that the `Window` struct is initialized, the main `Window::new()` function will
+            //  return and this events loop will run in parallel
+            loop {
+                let mut msg = mem::uninitialized();
+
+                if user32::GetMessageW(&mut msg, ptr::null_mut(), 0, 0) == 0 {
+                    break;
+                }
+
+                user32::TranslateMessage(&msg);
+                user32::DispatchMessageW(&msg);   // calls `callback` (see the callback module)
+            }
+        }
+    });
+
+    rx.recv().unwrap()
+}
+
+unsafe fn init(title: Vec<u16>, builder: BuilderAttribs<'static>,
+               builder_sharelists: Option<ContextHack>) -> Result<Window, CreationError>
+{
+    let builder_sharelists = builder_sharelists.map(|s| s.0);
+
+    // registering the window class
+    let class_name = register_window_class();
+
+    // building a RECT object with coordinates
+    let mut rect = winapi::RECT {
+        left: 0, right: builder.dimensions.unwrap_or((1024, 768)).0 as winapi::LONG,
+        top: 0, bottom: builder.dimensions.unwrap_or((1024, 768)).1 as winapi::LONG,
+    };
+
+    // switching to fullscreen if necessary
+    // this means adjusting the window's position so that it overlaps the right monitor,
+    //  and change the monitor's resolution if necessary
+    if builder.monitor.is_some() {
+        let monitor = builder.monitor.as_ref().unwrap();
+        try!(switch_to_fullscreen(&mut rect, monitor));
+    }
+
+    // computing the style and extended style of the window
+    let (ex_style, style) = if builder.monitor.is_some() {
+        (winapi::WS_EX_APPWINDOW, winapi::WS_POPUP | winapi::WS_CLIPSIBLINGS | winapi::WS_CLIPCHILDREN)
+    } else {
+        (winapi::WS_EX_APPWINDOW | winapi::WS_EX_WINDOWEDGE,
+            winapi::WS_OVERLAPPEDWINDOW | winapi::WS_CLIPSIBLINGS | winapi::WS_CLIPCHILDREN)
+    };
+
+    // adjusting the window coordinates using the style
+    user32::AdjustWindowRectEx(&mut rect, style, 0, ex_style);
+
+    // the first step is to create a dummy window and a dummy context which we will use
+    // to load the pointers to some functions in the OpenGL driver in `extra_functions`
+    let extra_functions = {
+        // creating a dummy invisible window
+        let dummy_window = {
+            let handle = user32::CreateWindowExW(ex_style, class_name.as_ptr(),
+                title.as_ptr() as winapi::LPCWSTR,
+                style | winapi::WS_CLIPSIBLINGS | winapi::WS_CLIPCHILDREN,
+                winapi::CW_USEDEFAULT, winapi::CW_USEDEFAULT,
+                rect.right - rect.left, rect.bottom - rect.top,
+                ptr::null_mut(), ptr::null_mut(), kernel32::GetModuleHandleW(ptr::null()),
+                ptr::null_mut());
+
+            if handle.is_null() {
+                return Err(OsError(format!("CreateWindowEx function failed: {}",
+                                           format!("{}", io::Error::last_os_error()))));
+            }
+
+            let hdc = user32::GetDC(handle);
+            if hdc.is_null() {
+                let err = Err(OsError(format!("GetDC function failed: {}",
+                                              format!("{}", io::Error::last_os_error()))));
+                return err;
+            }
+
+            WindowWrapper(handle, hdc)
+        };
+
+        // getting the pixel format that we will use and setting it
+        {
+            let formats = enumerate_native_pixel_formats(&dummy_window);
+            let id = try!(choose_dummy_pixel_format(formats.into_iter()));
+            try!(set_pixel_format(&dummy_window, id));
+        }
+
+        // creating the dummy OpenGL context and making it current
+        let dummy_context = try!(create_context(None, &dummy_window, None));
+        let current_context = try!(CurrentContextGuard::make_current(&dummy_window,
+                                                                     &dummy_context));
+
+        // loading the extra WGL functions
+        gl::wgl_extra::Wgl::load_with(|addr| {
+            use libc;
+
+            let addr = CString::new(addr.as_bytes()).unwrap();
+            let addr = addr.as_ptr();
+
+            gl::wgl::GetProcAddress(addr) as *const libc::c_void
+        })
+    };
+
+    // creating the real window this time, by using the functions in `extra_functions`
+    let real_window = {
+        let (width, height) = if builder.monitor.is_some() || builder.dimensions.is_some() {
+            (Some(rect.right - rect.left), Some(rect.bottom - rect.top))
+        } else {
+            (None, None)
+        };
+
+        let (x, y) = if builder.monitor.is_some() {
+            (Some(rect.left), Some(rect.top))
+        } else {
+            (None, None)
+        };
+
+        let style = if !builder.visible || builder.headless {
+            style
+        } else {
+            style | winapi::WS_VISIBLE
+        };
+
+        let handle = user32::CreateWindowExW(ex_style, class_name.as_ptr(),
+            title.as_ptr() as winapi::LPCWSTR,
+            style | winapi::WS_CLIPSIBLINGS | winapi::WS_CLIPCHILDREN,
+            x.unwrap_or(winapi::CW_USEDEFAULT), y.unwrap_or(winapi::CW_USEDEFAULT),
+            width.unwrap_or(winapi::CW_USEDEFAULT), height.unwrap_or(winapi::CW_USEDEFAULT),
+            ptr::null_mut(), ptr::null_mut(), kernel32::GetModuleHandleW(ptr::null()),
+            ptr::null_mut());
+
+        if handle.is_null() {
+            return Err(OsError(format!("CreateWindowEx function failed: {}",
+                                       format!("{}", io::Error::last_os_error()))));
+        }
+
+        let hdc = user32::GetDC(handle);
+        if hdc.is_null() {
+            return Err(OsError(format!("GetDC function failed: {}",
+                                       format!("{}", io::Error::last_os_error()))));
+        }
+
+        WindowWrapper(handle, hdc)
+    };
+
+    // calling SetPixelFormat
+    let pixel_format = {
+        let formats = if extra_functions.GetPixelFormatAttribivARB.is_loaded() {
+            enumerate_arb_pixel_formats(&extra_functions, &real_window)
+        } else {
+            enumerate_native_pixel_formats(&real_window)
+        };
+
+        let (id, f) = try!(builder.choose_pixel_format(formats.into_iter().map(|(a, b)| (b, a))));
+        try!(set_pixel_format(&real_window, id));
+        f
+    };
+
+    // creating the OpenGL context
+    let context = try!(create_context(Some((&extra_functions, &builder)), &real_window,
+                                      builder_sharelists));
+
+    // calling SetForegroundWindow if fullscreen
+    if builder.monitor.is_some() {
+        user32::SetForegroundWindow(real_window.0);
+    }
+
+    // Creating a mutex to track the current cursor state
+    let cursor_state = Arc::new(Mutex::new(CursorState::Normal));
+
+    // filling the CONTEXT_STASH task-local storage so that we can start receiving events
+    let events_receiver = {
+        let (tx, rx) = channel();
+        let mut tx = Some(tx);
+        callback::CONTEXT_STASH.with(|context_stash| {
+            let data = callback::ThreadLocalData {
+                win: real_window.0,
+                sender: tx.take().unwrap(),
+                cursor_state: cursor_state.clone()
+            };
+            (*context_stash.borrow_mut()) = Some(data);
+        });
+        rx
+    };
+
+    // loading the opengl32 module
+    let gl_library = try!(load_opengl32_dll());
+
+    // handling vsync
+    if builder.vsync {
+        if extra_functions.SwapIntervalEXT.is_loaded() {
+            let _guard = try!(CurrentContextGuard::make_current(&real_window, &context));
+
+            if extra_functions.SwapIntervalEXT(1) == 0 {
+                return Err(OsError(format!("wglSwapIntervalEXT failed")));
+            }
+        }
+    }
+
+    // building the struct
+    Ok(Window {
+        window: real_window,
+        context: context,
+        gl_library: gl_library,
+        events_receiver: events_receiver,
+        is_closed: AtomicBool::new(false),
+        cursor_state: cursor_state,
+        pixel_format: pixel_format,
+    })
+}
+
+unsafe fn register_window_class() -> Vec<u16> {
+    let class_name = OsStr::new("Window Class").encode_wide().chain(Some(0).into_iter())
+                                               .collect::<Vec<_>>();
+    
+    let class = winapi::WNDCLASSEXW {
+        cbSize: mem::size_of::<winapi::WNDCLASSEXW>() as winapi::UINT,
+        style: winapi::CS_HREDRAW | winapi::CS_VREDRAW | winapi::CS_OWNDC,
+        lpfnWndProc: Some(callback::callback),
+        cbClsExtra: 0,
+        cbWndExtra: 0,
+        hInstance: kernel32::GetModuleHandleW(ptr::null()),
+        hIcon: ptr::null_mut(),
+        hCursor: ptr::null_mut(),       // must be null in order for cursor state to work properly
+        hbrBackground: ptr::null_mut(),
+        lpszMenuName: ptr::null(),
+        lpszClassName: class_name.as_ptr(),
+        hIconSm: ptr::null_mut(),
+    };
+
+    // We ignore errors because registering the same window class twice would trigger
+    //  an error, and because errors here are detected during CreateWindowEx anyway.
+    // Also since there is no weird element in the struct, there is no reason for this
+    //  call to fail.
+    user32::RegisterClassExW(&class);
+
+    class_name
+}
+
+unsafe fn switch_to_fullscreen(rect: &mut winapi::RECT, monitor: &MonitorID)
+                               -> Result<(), CreationError>
+{
+    // adjusting the rect
+    {
+        let pos = monitor.get_position();
+        rect.left += pos.0 as winapi::LONG;
+        rect.right += pos.0 as winapi::LONG;
+        rect.top += pos.1 as winapi::LONG;
+        rect.bottom += pos.1 as winapi::LONG;
+    }
+
+    // changing device settings
+    let mut screen_settings: winapi::DEVMODEW = mem::zeroed();
+    screen_settings.dmSize = mem::size_of::<winapi::DEVMODEW>() as winapi::WORD;
+    screen_settings.dmPelsWidth = (rect.right - rect.left) as winapi::DWORD;
+    screen_settings.dmPelsHeight = (rect.bottom - rect.top) as winapi::DWORD;
+    screen_settings.dmBitsPerPel = 32;      // TODO: ?
+    screen_settings.dmFields = winapi::DM_BITSPERPEL | winapi::DM_PELSWIDTH | winapi::DM_PELSHEIGHT;
+
+    let result = user32::ChangeDisplaySettingsExW(monitor.get_adapter_name().as_ptr(),
+                                                  &mut screen_settings, ptr::null_mut(),
+                                                  winapi::CDS_FULLSCREEN, ptr::null_mut());
+    
+    if result != winapi::DISP_CHANGE_SUCCESSFUL {
+        return Err(OsError(format!("ChangeDisplaySettings failed: {}", result)));
+    }
+
+    Ok(())
+}
+
+unsafe fn create_context(extra: Option<(&gl::wgl_extra::Wgl, &BuilderAttribs<'static>)>,
+                         hdc: &WindowWrapper, share: Option<winapi::HGLRC>)
+                         -> Result<ContextWrapper, CreationError>
+{
+    let share = share.unwrap_or(ptr::null_mut());
+
+    let ctxt = if let Some((extra_functions, builder)) = extra {
+        if extra_functions.CreateContextAttribsARB.is_loaded() {
+            let mut attributes = Vec::new();
+
+            match builder.gl_version {
+                GlRequest::Latest => {},
+                GlRequest::Specific(Api::OpenGl, (major, minor)) => {
+                    attributes.push(gl::wgl_extra::CONTEXT_MAJOR_VERSION_ARB as libc::c_int);
+                    attributes.push(major as libc::c_int);
+                    attributes.push(gl::wgl_extra::CONTEXT_MINOR_VERSION_ARB as libc::c_int);
+                    attributes.push(minor as libc::c_int);
+                },
+                GlRequest::Specific(Api::OpenGlEs, (major, minor)) => {
+                    if is_extension_supported(extra_functions, hdc,
+                                              "WGL_EXT_create_context_es2_profile")
+                    {
+                        attributes.push(gl::wgl_extra::CONTEXT_PROFILE_MASK_ARB as libc::c_int);
+                        attributes.push(gl::wgl_extra::CONTEXT_ES2_PROFILE_BIT_EXT as libc::c_int);
+                    } else {
+                        return Err(CreationError::NotSupported);
+                    }
+
+                    attributes.push(gl::wgl_extra::CONTEXT_MAJOR_VERSION_ARB as libc::c_int);
+                    attributes.push(major as libc::c_int);
+                    attributes.push(gl::wgl_extra::CONTEXT_MINOR_VERSION_ARB as libc::c_int);
+                    attributes.push(minor as libc::c_int);
+                },
+                GlRequest::Specific(_, _) => return Err(CreationError::NotSupported),
+                GlRequest::GlThenGles { opengl_version: (major, minor), .. } => {
+                    attributes.push(gl::wgl_extra::CONTEXT_MAJOR_VERSION_ARB as libc::c_int);
+                    attributes.push(major as libc::c_int);
+                    attributes.push(gl::wgl_extra::CONTEXT_MINOR_VERSION_ARB as libc::c_int);
+                    attributes.push(minor as libc::c_int);
+                },
+            }
+
+            if builder.gl_debug {
+                attributes.push(gl::wgl_extra::CONTEXT_FLAGS_ARB as libc::c_int);
+                attributes.push(gl::wgl_extra::CONTEXT_DEBUG_BIT_ARB as libc::c_int);
+            }
+
+            attributes.push(0);
+
+            Some(extra_functions.CreateContextAttribsARB(hdc.1 as *const libc::c_void,
+                                                         share as *const libc::c_void,
+                                                         attributes.as_ptr()))
+
+        } else {
+            None
+        }
+    } else {
+        None
+    };
+
+    let ctxt = match ctxt {
+        Some(ctxt) => ctxt,
+        None => {
+            let ctxt = gl::wgl::CreateContext(hdc.1 as *const libc::c_void);
+            if !ctxt.is_null() && !share.is_null() {
+                gl::wgl::ShareLists(share as *const libc::c_void, ctxt);
+            };
+            ctxt
+        }
+    };
+
+    if ctxt.is_null() {
+        return Err(OsError(format!("OpenGL context creation failed: {}",
+                           format!("{}", io::Error::last_os_error()))));
+    }
+
+    Ok(ContextWrapper(ctxt as winapi::HGLRC))
+}
+
+unsafe fn enumerate_native_pixel_formats(hdc: &WindowWrapper) -> Vec<(PixelFormat, libc::c_int)> {
+    let size_of_pxfmtdescr = mem::size_of::<winapi::PIXELFORMATDESCRIPTOR>() as u32;
+    let num = gdi32::DescribePixelFormat(hdc.1, 1, size_of_pxfmtdescr, ptr::null_mut());
+
+    let mut result = Vec::new();
+
+    for index in (0 .. num) {
+        let mut output: winapi::PIXELFORMATDESCRIPTOR = mem::zeroed();
+        
+        if gdi32::DescribePixelFormat(hdc.1, index, size_of_pxfmtdescr, &mut output) == 0 {
+            continue;
+        }
+
+        if (output.dwFlags & winapi::PFD_DRAW_TO_WINDOW) == 0 {
+            continue;
+        }
+
+        if (output.dwFlags & winapi::PFD_SUPPORT_OPENGL) == 0 {
+            continue;
+        }
+
+        if output.iPixelType != winapi::PFD_TYPE_RGBA {
+            continue;
+        }
+
+        result.push((PixelFormat {
+            hardware_accelerated: (output.dwFlags & winapi::PFD_GENERIC_FORMAT) == 0,
+            red_bits: output.cRedBits,
+            green_bits: output.cGreenBits,
+            blue_bits: output.cBlueBits,
+            alpha_bits: output.cAlphaBits,
+            depth_bits: output.cDepthBits,
+            stencil_bits: output.cStencilBits,
+            stereoscopy: (output.dwFlags & winapi::PFD_STEREO) != 0,
+            double_buffer: (output.dwFlags & winapi::PFD_DOUBLEBUFFER) != 0,
+            multisampling: None,
+            srgb: false,
+        }, index));
+    }
+
+    result
+}
+
+unsafe fn enumerate_arb_pixel_formats(extra: &gl::wgl_extra::Wgl, hdc: &WindowWrapper)
+                                      -> Vec<(PixelFormat, libc::c_int)>
+{
+    let get_info = |index: u32, attrib: u32| {
+        let mut value = mem::uninitialized();
+        extra.GetPixelFormatAttribivARB(hdc.1 as *const libc::c_void, index as libc::c_int,
+                                        0, 1, [attrib as libc::c_int].as_ptr(),
+                                        &mut value);
+        value as u32
+    };
+
+    // getting the number of formats
+    // the `1` is ignored
+    let num = get_info(1, gl::wgl_extra::NUMBER_PIXEL_FORMATS_ARB);
+
+    let mut result = Vec::new();
+
+    for index in (0 .. num) {
+        if get_info(index, gl::wgl_extra::DRAW_TO_WINDOW_ARB) == 0 {
+            continue;
+        }
+        if get_info(index, gl::wgl_extra::SUPPORT_OPENGL_ARB) == 0 {
+            continue;
+        }
+
+        if get_info(index, gl::wgl_extra::ACCELERATION_ARB) == gl::wgl_extra::NO_ACCELERATION_ARB {
+            continue;
+        }
+
+        if get_info(index, gl::wgl_extra::PIXEL_TYPE_ARB) != gl::wgl_extra::TYPE_RGBA_ARB {
+            continue;
+        }
+
+        result.push((PixelFormat {
+            hardware_accelerated: true,
+            red_bits: get_info(index, gl::wgl_extra::RED_BITS_ARB) as u8,
+            green_bits: get_info(index, gl::wgl_extra::GREEN_BITS_ARB) as u8,
+            blue_bits: get_info(index, gl::wgl_extra::BLUE_BITS_ARB) as u8,
+            alpha_bits: get_info(index, gl::wgl_extra::ALPHA_BITS_ARB) as u8,
+            depth_bits: get_info(index, gl::wgl_extra::DEPTH_BITS_ARB) as u8,
+            stencil_bits: get_info(index, gl::wgl_extra::STENCIL_BITS_ARB) as u8,
+            stereoscopy: get_info(index, gl::wgl_extra::STEREO_ARB) != 0,
+            double_buffer: get_info(index, gl::wgl_extra::DOUBLE_BUFFER_ARB) != 0,
+            multisampling: {
+                if is_extension_supported(extra, hdc, "WGL_ARB_multisample") {
+                    match get_info(index, gl::wgl_extra::SAMPLES_ARB) {
+                        0 => None,
+                        a => Some(a as u16),
+                    }
+                } else {
+                    None
+                }
+            },
+            srgb: if is_extension_supported(extra, hdc, "WGL_ARB_framebuffer_sRGB") {
+                get_info(index, gl::wgl_extra::FRAMEBUFFER_SRGB_CAPABLE_ARB) != 0
+            } else if is_extension_supported(extra, hdc, "WGL_EXT_framebuffer_sRGB") {
+                get_info(index, gl::wgl_extra::FRAMEBUFFER_SRGB_CAPABLE_EXT) != 0
+            } else {
+                false
+            },
+        }, index as libc::c_int));
+    }
+
+    result
+}
+
+unsafe fn set_pixel_format(hdc: &WindowWrapper, id: libc::c_int) -> Result<(), CreationError> {
+    let mut output: winapi::PIXELFORMATDESCRIPTOR = mem::zeroed();
+
+    if gdi32::DescribePixelFormat(hdc.1, id, mem::size_of::<winapi::PIXELFORMATDESCRIPTOR>()
+                                  as winapi::UINT, &mut output) == 0
+    {
+        return Err(OsError(format!("DescribePixelFormat function failed: {}",
+                                   format!("{}", io::Error::last_os_error()))));
+    }
+
+    if gdi32::SetPixelFormat(hdc.1, id, &output) == 0 {
+        return Err(OsError(format!("SetPixelFormat function failed: {}",
+                                   format!("{}", io::Error::last_os_error()))));
+    }
+
+    Ok(())
+}
+
+unsafe fn load_opengl32_dll() -> Result<winapi::HMODULE, CreationError> {
+    let name = OsStr::new("opengl32.dll").encode_wide().chain(Some(0).into_iter())
+                                         .collect::<Vec<_>>();
+
+    let lib = kernel32::LoadLibraryW(name.as_ptr());
+
+    if lib.is_null() {
+        return Err(OsError(format!("LoadLibrary function failed: {}",
+                                    format!("{}", io::Error::last_os_error()))));
+    }
+
+    Ok(lib)
+}
+
+unsafe fn is_extension_supported(extra: &gl::wgl_extra::Wgl, hdc: &WindowWrapper,
+                                 extension: &str) -> bool
+{
+    let extensions = if extra.GetExtensionsStringARB.is_loaded() {
+        let data = extra.GetExtensionsStringARB(hdc.1 as *const _);
+        let data = CStr::from_ptr(data).to_bytes().to_vec();
+        String::from_utf8(data).unwrap()
+
+    } else if extra.GetExtensionsStringEXT.is_loaded() {
+        let data = extra.GetExtensionsStringEXT();
+        let data = CStr::from_ptr(data).to_bytes().to_vec();
+        String::from_utf8(data).unwrap()
+
+    } else {
+        return false;
+    };
+
+    extensions.split(" ").find(|&e| e == extension).is_some()
+}
+
+fn choose_dummy_pixel_format<I>(iter: I) -> Result<libc::c_int, CreationError>
+                                where I: Iterator<Item=(PixelFormat, libc::c_int)>
+{
+    let mut backup_id = None;
+
+    for (format, id) in iter {
+        if backup_id.is_none() {
+            backup_id = Some(id);
+        }
+
+        if format.hardware_accelerated {
+            return Ok(id);
+        }
+    }
+
+    backup_id.ok_or(CreationError::NotSupported)
+}

src/api/win32/make_current_guard.rs

@@ -0,0 +1,52 @@
+use std::marker::PhantomData;
+use std::io;
+
+use libc;
+use winapi;
+use CreationError;
+
+use super::gl;
+use super::ContextWrapper;
+use super::WindowWrapper;
+
+/// A guard for when you want to make the context current. Destroying the guard restores the
+/// previously-current context.
+pub struct CurrentContextGuard<'a, 'b> {
+    previous_hdc: winapi::HDC,
+    previous_hglrc: winapi::HGLRC,
+    marker1: PhantomData<&'a ()>,
+    marker2: PhantomData<&'b ()>,
+}
+
+impl<'a, 'b> CurrentContextGuard<'a, 'b> {
+    pub unsafe fn make_current(window: &'a WindowWrapper, context: &'b ContextWrapper)
+                               -> Result<CurrentContextGuard<'a, 'b>, CreationError>
+    {
+        let previous_hdc = gl::wgl::GetCurrentDC() as winapi::HDC;
+        let previous_hglrc = gl::wgl::GetCurrentContext() as winapi::HGLRC;
+
+        let result = gl::wgl::MakeCurrent(window.1 as *const libc::c_void,
+                                          context.0 as *const libc::c_void);
+
+        if result == 0 {
+            return Err(CreationError::OsError(format!("wglMakeCurrent function failed: {}",
+                                                      format!("{}", io::Error::last_os_error()))));
+        }
+
+        Ok(CurrentContextGuard {
+            previous_hdc: previous_hdc,
+            previous_hglrc: previous_hglrc,
+            marker1: PhantomData,
+            marker2: PhantomData,
+        })
+    }
+}
+
+impl<'a, 'b> Drop for CurrentContextGuard<'a, 'b> {
+    fn drop(&mut self) {
+        unsafe {
+            gl::wgl::MakeCurrent(self.previous_hdc as *const libc::c_void,
+                                 self.previous_hglrc as *const libc::c_void);
+        }
+    }
+}

src/api/win32/mod.rs

@@ -0,0 +1,419 @@
+#![cfg(target_os = "windows")]
+
+use std::sync::atomic::AtomicBool;
+use std::mem;
+use std::ptr;
+use std::ffi::CString;
+use std::ffi::OsStr;
+use std::os::windows::ffi::OsStrExt;
+use std::sync::{
+    Arc,
+    Mutex
+};
+use std::sync::mpsc::Receiver;
+use libc;
+use {CreationError, Event, MouseCursor};
+use CursorState;
+
+use PixelFormat;
+use BuilderAttribs;
+
+pub use self::headless::HeadlessContext;
+pub use self::monitor::{MonitorID, get_available_monitors, get_primary_monitor};
+
+use winapi;
+use user32;
+use kernel32;
+use gdi32;
+
+mod callback;
+mod event;
+mod gl;
+mod headless;
+mod init;
+mod make_current_guard;
+mod monitor;
+
+/// The Win32 implementation of the main `Window` object.
+pub struct Window {
+    /// Main handle for the window.
+    window: WindowWrapper,
+
+    /// OpenGL context.
+    context: ContextWrapper,
+
+    /// Binded to `opengl32.dll`.
+    ///
+    /// `wglGetProcAddress` returns null for GL 1.1 functions because they are
+    ///  already defined by the system. This module contains them.
+    gl_library: winapi::HMODULE,
+
+    /// Receiver for the events dispatched by the window callback.
+    events_receiver: Receiver<Event>,
+
+    /// True if a `Closed` event has been received.
+    is_closed: AtomicBool,
+
+    /// The current cursor state.
+    cursor_state: Arc<Mutex<CursorState>>,
+
+    /// The pixel format that has been used to create this window.
+    pixel_format: PixelFormat,
+}
+
+unsafe impl Send for Window {}
+unsafe impl Sync for Window {}
+
+/// A simple wrapper that destroys the context when it is destroyed.
+// FIXME: remove `pub` (https://github.com/rust-lang/rust/issues/23585)
+#[doc(hidden)]
+pub struct ContextWrapper(pub winapi::HGLRC);
+
+impl Drop for ContextWrapper {
+    fn drop(&mut self) {
+        unsafe {
+            gl::wgl::DeleteContext(self.0 as *const libc::c_void);
+        }
+    }
+}
+
+/// A simple wrapper that destroys the window when it is destroyed.
+// FIXME: remove `pub` (https://github.com/rust-lang/rust/issues/23585)
+#[doc(hidden)]
+pub struct WindowWrapper(pub winapi::HWND, pub winapi::HDC);
+
+impl Drop for WindowWrapper {
+    fn drop(&mut self) {
+        unsafe {
+            user32::DestroyWindow(self.0);
+        }
+    }
+}
+
+#[derive(Clone)]
+pub struct WindowProxy;
+
+impl WindowProxy {
+    pub fn wakeup_event_loop(&self) {
+        unimplemented!()
+    }
+}
+
+impl Window {
+    /// See the docs in the crate root file.
+    pub fn new(builder: BuilderAttribs) -> Result<Window, CreationError> {
+        let (builder, sharing) = builder.extract_non_static();
+        let sharing = sharing.map(|w| init::ContextHack(w.context.0));
+        init::new_window(builder, sharing)
+    }
+
+    /// See the docs in the crate root file.
+    pub fn is_closed(&self) -> bool {
+        use std::sync::atomic::Ordering::Relaxed;
+        self.is_closed.load(Relaxed)
+    }
+
+    /// See the docs in the crate root file.
+    ///
+    /// Calls SetWindowText on the HWND.
+    pub fn set_title(&self, text: &str) {
+        let text = OsStr::new(text).encode_wide().chain(Some(0).into_iter())
+                                   .collect::<Vec<_>>();
+
+        unsafe {
+            user32::SetWindowTextW(self.window.0, text.as_ptr() as winapi::LPCWSTR);
+        }
+    }
+
+    pub fn show(&self) {
+        unsafe {
+            user32::ShowWindow(self.window.0, winapi::SW_SHOW);
+        }
+    }
+
+    pub fn hide(&self) {
+        unsafe {
+            user32::ShowWindow(self.window.0, winapi::SW_HIDE);
+        }
+    }
+
+    /// See the docs in the crate root file.
+    pub fn get_position(&self) -> Option<(i32, i32)> {
+        use std::mem;
+
+        let mut placement: winapi::WINDOWPLACEMENT = unsafe { mem::zeroed() };
+        placement.length = mem::size_of::<winapi::WINDOWPLACEMENT>() as winapi::UINT;
+
+        if unsafe { user32::GetWindowPlacement(self.window.0, &mut placement) } == 0 {
+            return None
+        }
+
+        let ref rect = placement.rcNormalPosition;
+        Some((rect.left as i32, rect.top as i32))
+    }
+
+    /// See the docs in the crate root file.
+    pub fn set_position(&self, x: i32, y: i32) {
+        use libc;
+
+        unsafe {
+            user32::SetWindowPos(self.window.0, ptr::null_mut(), x as libc::c_int, y as libc::c_int,
+                0, 0, winapi::SWP_NOZORDER | winapi::SWP_NOSIZE);
+            user32::UpdateWindow(self.window.0);
+        }
+    }
+
+    /// See the docs in the crate root file.
+    pub fn get_inner_size(&self) -> Option<(u32, u32)> {
+        let mut rect: winapi::RECT = unsafe { mem::uninitialized() };
+
+        if unsafe { user32::GetClientRect(self.window.0, &mut rect) } == 0 {
+            return None
+        }
+
+        Some((
+            (rect.right - rect.left) as u32,
+            (rect.bottom - rect.top) as u32
+        ))
+    }
+
+    /// See the docs in the crate root file.
+    pub fn get_outer_size(&self) -> Option<(u32, u32)> {
+        let mut rect: winapi::RECT = unsafe { mem::uninitialized() };
+
+        if unsafe { user32::GetWindowRect(self.window.0, &mut rect) } == 0 {
+            return None
+        }
+
+        Some((
+            (rect.right - rect.left) as u32,
+            (rect.bottom - rect.top) as u32
+        ))
+    }
+
+    /// See the docs in the crate root file.
+    pub fn set_inner_size(&self, x: u32, y: u32) {
+        use libc;
+
+        unsafe {
+            user32::SetWindowPos(self.window.0, ptr::null_mut(), 0, 0, x as libc::c_int,
+                y as libc::c_int, winapi::SWP_NOZORDER | winapi::SWP_NOREPOSITION);
+            user32::UpdateWindow(self.window.0);
+        }
+    }
+
+    pub fn create_window_proxy(&self) -> WindowProxy {
+        WindowProxy
+    }
+
+    /// See the docs in the crate root file.
+    pub fn poll_events(&self) -> PollEventsIterator {
+        PollEventsIterator {
+            window: self,
+        }
+    }
+
+    /// See the docs in the crate root file.
+    pub fn wait_events(&self) -> WaitEventsIterator {
+        WaitEventsIterator {
+            window: self,
+        }
+    }
+
+    /// See the docs in the crate root file.
+    pub unsafe fn make_current(&self) {
+        // TODO: check return value
+        gl::wgl::MakeCurrent(self.window.1 as *const libc::c_void,
+                             self.context.0 as *const libc::c_void);
+    }
+
+    /// See the docs in the crate root file.
+    pub fn is_current(&self) -> bool {
+        unsafe { gl::wgl::GetCurrentContext() == self.context.0 as *const libc::c_void }
+    }
+
+    /// See the docs in the crate root file.
+    pub fn get_proc_address(&self, addr: &str) -> *const () {
+        let addr = CString::new(addr.as_bytes()).unwrap();
+        let addr = addr.as_ptr();
+
+        unsafe {
+            let p = gl::wgl::GetProcAddress(addr) as *const ();
+            if !p.is_null() { return p; }
+            kernel32::GetProcAddress(self.gl_library, addr) as *const ()
+        }
+    }
+
+    /// See the docs in the crate root file.
+    pub fn swap_buffers(&self) {
+        unsafe {
+            gdi32::SwapBuffers(self.window.1);
+        }
+    }
+
+    pub fn platform_display(&self) -> *mut libc::c_void {
+        unimplemented!()
+    }
+
+    pub fn platform_window(&self) -> *mut libc::c_void {
+        self.window.0 as *mut libc::c_void
+    }
+
+    /// See the docs in the crate root file.
+    pub fn get_api(&self) -> ::Api {
+        ::Api::OpenGl
+    }
+
+    pub fn get_pixel_format(&self) -> PixelFormat {
+        self.pixel_format.clone()
+    }
+
+    pub fn set_window_resize_callback(&mut self, _: Option<fn(u32, u32)>) {
+    }
+
+    pub fn set_cursor(&self, _cursor: MouseCursor) {
+        unimplemented!()
+    }
+
+    pub fn set_cursor_state(&self, state: CursorState) -> Result<(), String> {
+        let mut current_state = self.cursor_state.lock().unwrap();
+
+        let foreground_thread_id = unsafe { user32::GetWindowThreadProcessId(self.window.0, ptr::null_mut()) };
+        let current_thread_id = unsafe { kernel32::GetCurrentThreadId() };
+
+        unsafe { user32::AttachThreadInput(foreground_thread_id, current_thread_id, 1) };
+
+        let res = match (state, *current_state) {
+            (CursorState::Normal, CursorState::Normal) => Ok(()),
+            (CursorState::Hide, CursorState::Hide) => Ok(()),
+            (CursorState::Grab, CursorState::Grab) => Ok(()),
+
+            (CursorState::Hide, CursorState::Normal) => {
+                unsafe {
+                    user32::SetCursor(ptr::null_mut());
+                    *current_state = CursorState::Hide;
+                    Ok(())
+                }
+            },
+
+            (CursorState::Normal, CursorState::Hide) => {
+                unsafe {
+                    user32::SetCursor(user32::LoadCursorW(ptr::null_mut(), winapi::IDC_ARROW));
+                    *current_state = CursorState::Normal;
+                    Ok(())
+                }
+            },
+
+            (CursorState::Grab, CursorState::Normal) => {
+                unsafe {
+                    user32::SetCursor(ptr::null_mut());
+                    let mut rect = mem::uninitialized();
+                    if user32::GetClientRect(self.window.0, &mut rect) == 0 {
+                        return Err(format!("GetWindowRect failed"));
+                    }
+                    user32::ClientToScreen(self.window.0, mem::transmute(&mut rect.left));
+                    user32::ClientToScreen(self.window.0, mem::transmute(&mut rect.right));
+                    if user32::ClipCursor(&rect) == 0 {
+                        return Err(format!("ClipCursor failed"));
+                    }
+                    *current_state = CursorState::Grab;
+                    Ok(())
+                }
+            },
+
+            (CursorState::Normal, CursorState::Grab) => {
+                unsafe {
+                    user32::SetCursor(user32::LoadCursorW(ptr::null_mut(), winapi::IDC_ARROW));
+                    if user32::ClipCursor(ptr::null()) == 0 {
+                        return Err(format!("ClipCursor failed"));
+                    }
+                    *current_state = CursorState::Normal;
+                    Ok(())
+                }
+            },
+
+            _ => unimplemented!(),
+        };
+
+        unsafe { user32::AttachThreadInput(foreground_thread_id, current_thread_id, 0) };
+
+        res
+    }
+
+    pub fn hidpi_factor(&self) -> f32 {
+        1.0
+    }
+
+    pub fn set_cursor_position(&self, x: i32, y: i32) -> Result<(), ()> {
+        let mut point = winapi::POINT {
+            x: x,
+            y: y,
+        };
+
+        unsafe {
+            if user32::ClientToScreen(self.window.0, &mut point) == 0 {
+                return Err(());
+            }
+
+            if user32::SetCursorPos(point.x, point.y) == 0 {
+                return Err(());
+            }
+        }
+
+        Ok(())
+    }
+}
+
+pub struct PollEventsIterator<'a> {
+    window: &'a Window,
+}
+
+impl<'a> Iterator for PollEventsIterator<'a> {
+    type Item = Event;
+
+    fn next(&mut self) -> Option<Event> {
+        use events::Event::Closed;
+
+        match self.window.events_receiver.try_recv() {
+            Ok(Closed) => {
+                use std::sync::atomic::Ordering::Relaxed;
+                self.window.is_closed.store(true, Relaxed);
+                Some(Closed)
+            },
+            Ok(ev) => Some(ev),
+            Err(_) => None
+        }
+    }
+}
+
+pub struct WaitEventsIterator<'a> {
+    window: &'a Window,
+}
+
+impl<'a> Iterator for WaitEventsIterator<'a> {
+    type Item = Event;
+
+    fn next(&mut self) -> Option<Event> {
+        use events::Event::Closed;
+
+        match self.window.events_receiver.recv() {
+            Ok(Closed) => {
+                use std::sync::atomic::Ordering::Relaxed;
+                self.window.is_closed.store(true, Relaxed);
+                Some(Closed)
+            },
+            Ok(ev) => Some(ev),
+            Err(_) => None
+        }
+    }
+}
+
+impl Drop for Window {
+    fn drop(&mut self) {
+        unsafe {
+            // we don't call MakeCurrent(0, 0) because we are not sure that the context
+            // is still the current one
+            user32::PostMessageW(self.window.0, winapi::WM_DESTROY, 0, 0);
+        }
+    }
+}

src/api/win32/monitor.rs

@@ -0,0 +1,180 @@
+use winapi;
+use user32;
+
+use std::collections::VecDeque;
+use std::mem;
+
+use native_monitor::NativeMonitorId;
+
+/// Win32 implementation of the main `MonitorID` object.
+pub struct MonitorID {
+    /// The system name of the adapter.
+    adapter_name: [winapi::WCHAR; 32],
+
+    /// The system name of the monitor.
+    monitor_name: String,
+
+    /// Name to give to the user.
+    readable_name: String,
+
+    /// See the `StateFlags` element here:
+    /// http://msdn.microsoft.com/en-us/library/dd183569(v=vs.85).aspx
+    flags: winapi::DWORD,
+
+    /// True if this is the primary monitor.
+    primary: bool,
+
+    /// The position of the monitor in pixels on the desktop.
+    ///
+    /// A window that is positionned at these coordinates will overlap the monitor.
+    position: (u32, u32),
+
+    /// The current resolution in pixels on the monitor.
+    dimensions: (u32, u32),
+}
+
+struct DeviceEnumerator {
+    parent_device: *const winapi::WCHAR,
+    current_index: u32,
+}
+
+impl DeviceEnumerator {
+    fn adapters() -> DeviceEnumerator {
+        use std::ptr;
+        DeviceEnumerator {
+            parent_device: ptr::null(),
+            current_index: 0
+        }
+    }
+
+    fn monitors(adapter_name: *const winapi::WCHAR) -> DeviceEnumerator {
+        DeviceEnumerator {
+            parent_device: adapter_name,
+            current_index: 0
+        }
+    }
+}
+
+impl Iterator for DeviceEnumerator {
+    type Item = winapi::DISPLAY_DEVICEW;
+    fn next(&mut self) -> Option<winapi::DISPLAY_DEVICEW> {
+        use std::mem;
+        loop {
+            let mut output: winapi::DISPLAY_DEVICEW = unsafe { mem::zeroed() };
+            output.cb = mem::size_of::<winapi::DISPLAY_DEVICEW>() as winapi::DWORD;
+
+            if unsafe { user32::EnumDisplayDevicesW(self.parent_device,
+                self.current_index as winapi::DWORD, &mut output, 0) } == 0
+            {
+                // the device doesn't exist, which means we have finished enumerating
+                break;
+            }
+            self.current_index += 1;
+
+            if  (output.StateFlags & winapi::DISPLAY_DEVICE_ACTIVE) == 0 ||
+                (output.StateFlags & winapi::DISPLAY_DEVICE_MIRRORING_DRIVER) != 0
+            {
+                // the device is not active
+                // the Win32 api usually returns a lot of inactive devices
+                continue;
+            }
+
+            return Some(output);
+        }
+        None
+    }
+}
+
+fn wchar_as_string(wchar: &[winapi::WCHAR]) -> String {
+    String::from_utf16_lossy(wchar)
+        .trim_right_matches(0 as char)
+        .to_string()
+}
+
+/// Win32 implementation of the main `get_available_monitors` function.
+pub fn get_available_monitors() -> VecDeque<MonitorID> {
+    // return value
+    let mut result = VecDeque::new();
+
+    for adapter in DeviceEnumerator::adapters() {
+        // getting the position
+        let (position, dimensions) = unsafe {
+            let mut dev: winapi::DEVMODEW = mem::zeroed();
+            dev.dmSize = mem::size_of::<winapi::DEVMODEW>() as winapi::WORD;
+
+            if user32::EnumDisplaySettingsExW(adapter.DeviceName.as_ptr(), 
+                winapi::ENUM_CURRENT_SETTINGS,
+                &mut dev, 0) == 0
+            {
+                continue;
+            }
+
+            let point: &winapi::POINTL = mem::transmute(&dev.union1);
+            let position = (point.x as u32, point.y as u32);
+
+            let dimensions = (dev.dmPelsWidth as u32, dev.dmPelsHeight as u32);
+
+            (position, dimensions)
+        };
+
+        for (num, monitor) in DeviceEnumerator::monitors(adapter.DeviceName.as_ptr()).enumerate() {
+            // adding to the resulting list
+            result.push_back(MonitorID {
+                adapter_name: adapter.DeviceName,
+                monitor_name: wchar_as_string(&monitor.DeviceName),
+                readable_name: wchar_as_string(&monitor.DeviceString),
+                flags: monitor.StateFlags,
+                primary: (adapter.StateFlags & winapi::DISPLAY_DEVICE_PRIMARY_DEVICE) != 0 &&
+                         num == 0,
+                position: position,
+                dimensions: dimensions,
+            });
+        }
+    }
+    result
+}
+
+/// Win32 implementation of the main `get_primary_monitor` function.
+pub fn get_primary_monitor() -> MonitorID {
+    // we simply get all available monitors and return the one with the `PRIMARY_DEVICE` flag
+    // TODO: it is possible to query the win32 API for the primary monitor, this should be done
+    //  instead
+    for monitor in get_available_monitors().into_iter() {
+        if monitor.primary {
+            return monitor;
+        }
+    }
+
+    panic!("Failed to find the primary monitor")
+}
+
+impl MonitorID {
+    /// See the docs if the crate root file.
+    pub fn get_name(&self) -> Option<String> {
+        Some(self.readable_name.clone())
+    }
+
+    /// See the docs of the crate root file.
+    pub fn get_native_identifier(&self) -> NativeMonitorId {
+        NativeMonitorId::Name(self.monitor_name.clone())
+    }
+
+    /// See the docs if the crate root file.
+    pub fn get_dimensions(&self) -> (u32, u32) {
+        // TODO: retreive the dimensions every time this is called
+        self.dimensions
+    }
+
+    /// This is a Win32-only function for `MonitorID` that returns the system name of the adapter
+    /// device.
+    pub fn get_adapter_name(&self) -> &[winapi::WCHAR] {
+        &self.adapter_name
+    }
+
+    /// This is a Win32-only function for `MonitorID` that returns the position of the
+    ///  monitor on the desktop.
+    /// A window that is positionned at these coordinates will overlap the monitor.
+    pub fn get_position(&self) -> (u32, u32) {
+        self.position
+    }
+}

src/api/x11/ffi.rs

@@ -0,0 +1,19 @@
+#[cfg(feature="headless")]
+pub use osmesa_sys::*;
+pub use x11::keysym::*;
+pub use x11::xcursor::*;
+pub use x11::xf86vmode::*;
+pub use x11::xlib::*;
+pub use x11::xlib::xkb::*;
+
+pub use self::glx::types::GLXContext;
+
+/// GLX bindings
+pub mod glx {
+    include!(concat!(env!("OUT_DIR"), "/glx_bindings.rs"));
+}
+
+/// Functions that are not necessarly always available
+pub mod glx_extra {
+    include!(concat!(env!("OUT_DIR"), "/glx_extra_bindings.rs"));
+}

src/api/x11/headless.rs

@@ -0,0 +1,72 @@
+use BuilderAttribs;
+use CreationError;
+use CreationError::OsError;
+use libc;
+use std::{mem, ptr};
+use super::ffi;
+
+pub struct HeadlessContext {
+    context: ffi::OSMesaContext,
+    buffer: Vec<u32>,
+    width: u32,
+    height: u32,
+}
+
+impl HeadlessContext {
+    pub fn new(builder: BuilderAttribs) -> Result<HeadlessContext, CreationError> {
+        let dimensions = builder.dimensions.unwrap();
+
+        Ok(HeadlessContext {
+            width: dimensions.0,
+            height: dimensions.1,
+            buffer: ::std::iter::repeat(unsafe { mem::uninitialized() })
+                .take((dimensions.0 * dimensions.1) as usize).collect(),
+            context: unsafe {
+                let ctxt = ffi::OSMesaCreateContext(0x1908, ptr::null_mut());
+                if ctxt.is_null() {
+                    return Err(OsError("OSMesaCreateContext failed".to_string()));
+                }
+                ctxt
+            }
+        })
+    }
+
+    pub unsafe fn make_current(&self) {
+        let ret = ffi::OSMesaMakeCurrent(self.context,
+            self.buffer.as_ptr() as *mut libc::c_void,
+            0x1401, self.width as libc::c_int, self.height as libc::c_int);
+
+        if ret == 0 {
+            panic!("OSMesaMakeCurrent failed")
+        }
+    }
+
+    pub fn is_current(&self) -> bool {
+        unsafe { ffi::OSMesaGetCurrentContext() == self.context }
+    }
+
+    pub fn get_proc_address(&self, addr: &str) -> *const () {
+        unsafe {
+            use std::ffi::CString;
+            let c_str = CString::new(addr.as_bytes().to_vec()).unwrap();
+            mem::transmute(ffi::OSMesaGetProcAddress(mem::transmute(c_str.as_ptr())))
+        }
+    }
+
+    /// See the docs in the crate root file.
+    pub fn get_api(&self) -> ::Api {
+        ::Api::OpenGl
+    }
+
+    pub fn set_window_resize_callback(&mut self, _: Option<fn(u32, u32)>) {
+    }
+}
+
+impl Drop for HeadlessContext {
+    fn drop(&mut self) {
+        unsafe { ffi::OSMesaDestroyContext(self.context) }
+    }
+}
+
+unsafe impl Send for HeadlessContext {}
+unsafe impl Sync for HeadlessContext {}

src/api/x11/mod.rs

@@ -0,0 +1,22 @@
+#![cfg(target_os = "linux")]
+
+#[cfg(feature = "headless")]
+pub use self::headless::HeadlessContext;
+
+#[cfg(feature = "window")]
+pub use self::window::{Window, WindowProxy, MonitorID, get_available_monitors, get_primary_monitor};
+#[cfg(feature = "window")]
+pub use self::window::{WaitEventsIterator, PollEventsIterator};
+
+mod ffi;
+
+#[cfg(feature = "headless")]
+mod headless;
+
+#[cfg(feature = "window")]
+mod window;
+
+#[cfg(not(feature = "window"))]
+pub type Window = ();       // TODO: hack to make things work
+#[cfg(not(feature = "window"))]
+pub type MonitorID = ();       // TODO: hack to make things work

src/api/x11/window/mod.rs

@@ -0,0 +1,885 @@
+use {Event, BuilderAttribs, MouseCursor};
+use CreationError;
+use CreationError::OsError;
+use libc;
+use std::{mem, ptr};
+use std::cell::Cell;
+use std::sync::atomic::AtomicBool;
+use std::collections::VecDeque;
+use super::ffi;
+use std::sync::{Arc, Mutex, Once, ONCE_INIT};
+
+use Api;
+use CursorState;
+use GlRequest;
+use PixelFormat;
+
+pub use self::monitor::{MonitorID, get_available_monitors, get_primary_monitor};
+
+mod events;
+mod monitor;
+
+static THREAD_INIT: Once = ONCE_INIT;
+
+// XOpenIM doesn't seem to be thread-safe
+lazy_static! {      // TODO: use a static mutex when that's possible, and put me back in my function
+    static ref GLOBAL_XOPENIM_LOCK: Mutex<()> = Mutex::new(());
+}
+
+unsafe extern "C" fn x_error_callback(_: *mut ffi::Display, event: *mut ffi::XErrorEvent) -> libc::c_int {
+    println!("[glutin] x error code={} major={} minor={}!", (*event).error_code, (*event).request_code, (*event).minor_code);
+    0
+}
+
+fn ensure_thread_init() {
+    THREAD_INIT.call_once(|| {
+        unsafe {
+            ffi::XInitThreads();
+            ffi::XSetErrorHandler(Some(x_error_callback));
+        }
+    });
+}
+
+fn with_c_str<F, T>(s: &str, f: F) -> T where F: FnOnce(*const libc::c_char) -> T {
+    use std::ffi::CString;
+    let c_str = CString::new(s.as_bytes().to_vec()).unwrap();
+    f(c_str.as_ptr())
+}
+
+struct XWindow {
+    display: *mut ffi::Display,
+    window: ffi::Window,
+    context: ffi::GLXContext,
+    is_fullscreen: bool,
+    screen_id: libc::c_int,
+    xf86_desk_mode: *mut ffi::XF86VidModeModeInfo,
+    ic: ffi::XIC,
+    im: ffi::XIM,
+}
+
+unsafe impl Send for XWindow {}
+unsafe impl Sync for XWindow {}
+
+unsafe impl Send for Window {}
+unsafe impl Sync for Window {}
+
+impl Drop for XWindow {
+    fn drop(&mut self) {
+        unsafe {
+            // we don't call MakeCurrent(0, 0) because we are not sure that the context
+            // is still the current one
+            ffi::glx::DestroyContext(self.display as *mut _, self.context);
+
+            if self.is_fullscreen {
+                ffi::XF86VidModeSwitchToMode(self.display, self.screen_id, self.xf86_desk_mode);
+                ffi::XF86VidModeSetViewPort(self.display, self.screen_id, 0, 0);
+            }
+
+            ffi::XDestroyIC(self.ic);
+            ffi::XCloseIM(self.im);
+            ffi::XDestroyWindow(self.display, self.window);
+            ffi::XCloseDisplay(self.display);
+        }
+    }
+}
+
+#[derive(Clone)]
+pub struct WindowProxy {
+    x: Arc<XWindow>,
+}
+
+impl WindowProxy {
+    pub fn wakeup_event_loop(&self) {
+        let mut xev = ffi::XClientMessageEvent {
+            type_: ffi::ClientMessage,
+            window: self.x.window,
+            format: 32,
+            message_type: 0,
+            serial: 0,
+            send_event: 0,
+            display: self.x.display,
+            data: unsafe { mem::zeroed() },
+        };
+
+        unsafe {
+            ffi::XSendEvent(self.x.display, self.x.window, 0, 0, mem::transmute(&mut xev));
+            ffi::XFlush(self.x.display);
+        }
+    }
+}
+
+pub struct PollEventsIterator<'a> {
+    window: &'a Window,
+}
+
+impl<'a> Iterator for PollEventsIterator<'a> {
+    type Item = Event;
+
+    fn next(&mut self) -> Option<Event> {
+        if let Some(ev) = self.window.pending_events.lock().unwrap().pop_front() {
+            return Some(ev);
+        }
+
+        loop {
+            let mut xev = unsafe { mem::uninitialized() };
+            let res = unsafe { ffi::XCheckMaskEvent(self.window.x.display, -1, &mut xev) };
+
+            if res == 0 {
+                let res = unsafe { ffi::XCheckTypedEvent(self.window.x.display, ffi::ClientMessage, &mut xev) };
+
+                if res == 0 {
+                    return None;
+                }
+            }
+
+            match xev.get_type() {
+                ffi::KeymapNotify => {
+                    unsafe { ffi::XRefreshKeyboardMapping(mem::transmute(&xev)); }
+                },
+
+                ffi::ClientMessage => {
+                    use events::Event::{Closed, Awakened};
+                    use std::sync::atomic::Ordering::Relaxed;
+
+                    let client_msg: &ffi::XClientMessageEvent = unsafe { mem::transmute(&xev) };
+
+                    if client_msg.data.get_long(0) == self.window.wm_delete_window as libc::c_long {
+                        self.window.is_closed.store(true, Relaxed);
+                        return Some(Closed);
+                    } else {
+                        return Some(Awakened);
+                    }
+                },
+
+                ffi::ConfigureNotify => {
+                    use events::Event::Resized;
+                    let cfg_event: &ffi::XConfigureEvent = unsafe { mem::transmute(&xev) };
+                    let (current_width, current_height) = self.window.current_size.get();
+                    if current_width != cfg_event.width || current_height != cfg_event.height {
+                        self.window.current_size.set((cfg_event.width, cfg_event.height));
+                        return Some(Resized(cfg_event.width as u32, cfg_event.height as u32));
+                    }
+                },
+
+                ffi::Expose => {
+                    use events::Event::Refresh;
+                    return Some(Refresh);
+                },
+
+                ffi::MotionNotify => {
+                    use events::Event::MouseMoved;
+                    let event: &ffi::XMotionEvent = unsafe { mem::transmute(&xev) };
+                    return Some(MouseMoved((event.x as i32, event.y as i32)));
+                },
+
+                ffi::KeyPress | ffi::KeyRelease => {
+                    use events::Event::{KeyboardInput, ReceivedCharacter};
+                    use events::ElementState::{Pressed, Released};
+                    let event: &mut ffi::XKeyEvent = unsafe { mem::transmute(&xev) };
+
+                    if event.type_ == ffi::KeyPress {
+                        let raw_ev: *mut ffi::XKeyEvent = event;
+                        unsafe { ffi::XFilterEvent(mem::transmute(raw_ev), self.window.x.window) };
+                    }
+
+                    let state = if xev.get_type() == ffi::KeyPress { Pressed } else { Released };
+
+                    let written = unsafe {
+                        use std::str;
+
+                        let mut buffer: [u8; 16] = [mem::uninitialized(); 16];
+                        let raw_ev: *mut ffi::XKeyEvent = event;
+                        let count = ffi::Xutf8LookupString(self.window.x.ic, mem::transmute(raw_ev),
+                            mem::transmute(buffer.as_mut_ptr()),
+                            buffer.len() as libc::c_int, ptr::null_mut(), ptr::null_mut());
+
+                        str::from_utf8(&buffer[..count as usize]).unwrap_or("").to_string()
+                    };
+
+                    {
+                        let mut pending = self.window.pending_events.lock().unwrap();
+                        for chr in written.chars() {
+                            pending.push_back(ReceivedCharacter(chr));
+                        }
+                    }
+
+                    let keysym = unsafe {
+                        ffi::XKeycodeToKeysym(self.window.x.display, event.keycode as ffi::KeyCode, 0)
+                    };
+
+                    let vkey =  events::keycode_to_element(keysym as libc::c_uint);
+
+                    return Some(KeyboardInput(state, event.keycode as u8, vkey));
+                },
+
+                ffi::ButtonPress | ffi::ButtonRelease => {
+                    use events::Event::{MouseInput, MouseWheel};
+                    use events::ElementState::{Pressed, Released};
+                    use events::MouseButton::{Left, Right, Middle};
+
+                    let event: &ffi::XButtonEvent = unsafe { mem::transmute(&xev) };
+
+                    let state = if xev.get_type() == ffi::ButtonPress { Pressed } else { Released };
+
+                    let button = match event.button {
+                        ffi::Button1 => Some(Left),
+                        ffi::Button2 => Some(Middle),
+                        ffi::Button3 => Some(Right),
+                        ffi::Button4 => {
+                            self.window.pending_events.lock().unwrap().push_back(MouseWheel(1));
+                            None
+                        }
+                        ffi::Button5 => {
+                            self.window.pending_events.lock().unwrap().push_back(MouseWheel(-1));
+                            None
+                        }
+                        _ => None
+                    };
+
+                    match button {
+                        Some(button) =>
+                            return Some(MouseInput(state, button)),
+                        None => ()
+                    };
+                },
+
+                _ => ()
+            };
+        }
+    }
+}
+
+pub struct WaitEventsIterator<'a> {
+    window: &'a Window,
+}
+
+impl<'a> Iterator for WaitEventsIterator<'a> {
+    type Item = Event;
+
+    fn next(&mut self) -> Option<Event> {
+        use std::mem;
+
+        while !self.window.is_closed() {
+            if let Some(ev) = self.window.pending_events.lock().unwrap().pop_front() {
+                return Some(ev);
+            }
+
+            // this will block until an event arrives, but doesn't remove
+            // it from the queue
+            let mut xev = unsafe { mem::uninitialized() };
+            unsafe { ffi::XPeekEvent(self.window.x.display, &mut xev) };
+
+            // calling poll_events()
+            if let Some(ev) = self.window.poll_events().next() {
+                return Some(ev);
+            }
+        }
+
+        None
+    }
+}
+
+pub struct Window {
+    x: Arc<XWindow>,
+    is_closed: AtomicBool,
+    wm_delete_window: ffi::Atom,
+    current_size: Cell<(libc::c_int, libc::c_int)>,
+    pixel_format: PixelFormat,
+    /// Events that have been retreived with XLib but not dispatched with iterators yet
+    pending_events: Mutex<VecDeque<Event>>,
+    cursor_state: Mutex<CursorState>,
+}
+
+impl Window {
+    pub fn new(builder: BuilderAttribs) -> Result<Window, CreationError> {
+        ensure_thread_init();
+        let dimensions = builder.dimensions.unwrap_or((800, 600));
+
+        // calling XOpenDisplay
+        let display = unsafe {
+            let display = ffi::XOpenDisplay(ptr::null());
+            if display.is_null() {
+                return Err(OsError(format!("XOpenDisplay failed")));
+            }
+            display
+        };
+
+        let screen_id = match builder.monitor {
+            Some(MonitorID(monitor)) => monitor as i32,
+            None => unsafe { ffi::XDefaultScreen(display) },
+        };
+
+        // getting the FBConfig
+        let fb_config = unsafe {
+            let mut visual_attributes = vec![
+                ffi::glx::X_RENDERABLE as libc::c_int,  1,
+                ffi::glx::DRAWABLE_TYPE as libc::c_int, ffi::glx::WINDOW_BIT as libc::c_int,
+                ffi::glx::RENDER_TYPE as libc::c_int,   ffi::glx::RGBA_BIT as libc::c_int,
+                ffi::glx::X_VISUAL_TYPE as libc::c_int, ffi::glx::TRUE_COLOR as libc::c_int,
+                ffi::glx::RED_SIZE as libc::c_int,      8,
+                ffi::glx::GREEN_SIZE as libc::c_int,    8,
+                ffi::glx::BLUE_SIZE as libc::c_int,     8,
+                ffi::glx::ALPHA_SIZE as libc::c_int,    8,
+                ffi::glx::DEPTH_SIZE as libc::c_int,    24,
+                ffi::glx::STENCIL_SIZE as libc::c_int,  8,
+                ffi::glx::DOUBLEBUFFER as libc::c_int,  1,
+            ];
+
+            if let Some(val) = builder.multisampling {
+                visual_attributes.push(ffi::glx::SAMPLE_BUFFERS as libc::c_int);
+                visual_attributes.push(1);
+                visual_attributes.push(ffi::glx::SAMPLES as libc::c_int);
+                visual_attributes.push(val as libc::c_int);
+            }
+
+            if let Some(val) = builder.srgb {
+                visual_attributes.push(ffi::glx_extra::FRAMEBUFFER_SRGB_CAPABLE_ARB as libc::c_int);
+                visual_attributes.push(if val {1} else {0});
+            }
+
+            visual_attributes.push(0);
+
+            let mut num_fb: libc::c_int = mem::uninitialized();
+
+            let fb = ffi::glx::ChooseFBConfig(display as *mut _, ffi::XDefaultScreen(display),
+                visual_attributes.as_ptr(), &mut num_fb);
+            if fb.is_null() {
+                return Err(OsError(format!("glx::ChooseFBConfig failed")));
+            }
+            let preferred_fb = *fb;     // TODO: choose more wisely
+            ffi::XFree(fb as *mut _);
+            preferred_fb
+        };
+
+        let mut best_mode = -1;
+        let modes = unsafe {
+            let mut mode_num: libc::c_int = mem::uninitialized();
+            let mut modes: *mut *mut ffi::XF86VidModeModeInfo = mem::uninitialized();
+            if ffi::XF86VidModeGetAllModeLines(display, screen_id, &mut mode_num, &mut modes) == 0 {
+                return Err(OsError(format!("Could not query the video modes")));
+            }
+
+            for i in 0..mode_num {
+                let mode: ffi::XF86VidModeModeInfo = ptr::read(*modes.offset(i as isize) as *const _);
+                if mode.hdisplay == dimensions.0 as u16 && mode.vdisplay == dimensions.1 as u16 {
+                    best_mode = i;
+                }
+            };
+            if best_mode == -1 && builder.monitor.is_some() {
+                return Err(OsError(format!("Could not find a suitable graphics mode")));
+            }
+
+            modes
+        };
+
+        let xf86_desk_mode = unsafe {
+            *modes.offset(0)
+        };
+
+        // getting the visual infos
+        let mut visual_infos: ffi::glx::types::XVisualInfo = unsafe {
+            let vi = ffi::glx::GetVisualFromFBConfig(display as *mut _, fb_config);
+            if vi.is_null() {
+                return Err(OsError(format!("glx::ChooseVisual failed")));
+            }
+            let vi_copy = ptr::read(vi as *const _);
+            ffi::XFree(vi as *mut _);
+            vi_copy
+        };
+
+        // querying the chosen pixel format
+        let pixel_format = {
+            let get_attrib = |attrib: libc::c_int| -> i32 {
+                let mut value = 0;
+                unsafe { ffi::glx::GetFBConfigAttrib(display as *mut _, fb_config, attrib, &mut value); }
+                value
+            };
+
+            PixelFormat {
+                hardware_accelerated: true,
+                red_bits: get_attrib(ffi::glx::RED_SIZE as libc::c_int) as u8,
+                green_bits: get_attrib(ffi::glx::GREEN_SIZE as libc::c_int) as u8,
+                blue_bits: get_attrib(ffi::glx::BLUE_SIZE as libc::c_int) as u8,
+                alpha_bits: get_attrib(ffi::glx::ALPHA_SIZE as libc::c_int) as u8,
+                depth_bits: get_attrib(ffi::glx::DEPTH_SIZE as libc::c_int) as u8,
+                stencil_bits: get_attrib(ffi::glx::STENCIL_SIZE as libc::c_int) as u8,
+                stereoscopy: get_attrib(ffi::glx::STEREO as libc::c_int) != 0,
+                double_buffer: get_attrib(ffi::glx::DOUBLEBUFFER as libc::c_int) != 0,
+                multisampling: if get_attrib(ffi::glx::SAMPLE_BUFFERS as libc::c_int) != 0 {
+                    Some(get_attrib(ffi::glx::SAMPLES as libc::c_int) as u16)
+                }else { None },
+                srgb: get_attrib(ffi::glx_extra::FRAMEBUFFER_SRGB_CAPABLE_ARB as libc::c_int) != 0,
+            }
+        };
+
+        // getting the root window
+        let root = unsafe { ffi::XDefaultRootWindow(display) };
+
+        // creating the color map
+        let cmap = unsafe {
+            let cmap = ffi::XCreateColormap(display, root,
+                visual_infos.visual as *mut _, ffi::AllocNone);
+            // TODO: error checking?
+            cmap
+        };
+
+        // creating
+        let mut set_win_attr = {
+            let mut swa: ffi::XSetWindowAttributes = unsafe { mem::zeroed() };
+            swa.colormap = cmap;
+            swa.event_mask = ffi::ExposureMask | ffi::StructureNotifyMask |
+                ffi::VisibilityChangeMask | ffi::KeyPressMask | ffi::PointerMotionMask |
+                ffi::KeyReleaseMask | ffi::ButtonPressMask |
+                ffi::ButtonReleaseMask | ffi::KeymapStateMask;
+            swa.border_pixel = 0;
+            swa.override_redirect = 0;
+            swa
+        };
+
+        let mut window_attributes = ffi::CWBorderPixel | ffi::CWColormap | ffi:: CWEventMask;
+        if builder.monitor.is_some() {
+            window_attributes |= ffi::CWOverrideRedirect;
+            unsafe {
+                ffi::XF86VidModeSwitchToMode(display, screen_id, *modes.offset(best_mode as isize));
+                ffi::XF86VidModeSetViewPort(display, screen_id, 0, 0);
+                set_win_attr.override_redirect = 1;
+            }
+        }
+
+        // finally creating the window
+        let window = unsafe {
+            let win = ffi::XCreateWindow(display, root, 0, 0, dimensions.0 as libc::c_uint,
+                dimensions.1 as libc::c_uint, 0, visual_infos.depth, ffi::InputOutput as libc::c_uint,
+                visual_infos.visual as *mut _, window_attributes,
+                &mut set_win_attr);
+            win
+        };
+
+        // set visibility
+        if builder.visible {
+            unsafe {
+                ffi::XMapRaised(display, window);
+                ffi::XFlush(display);
+            }
+        }
+
+        // creating window, step 2
+        let wm_delete_window = unsafe {
+            let mut wm_delete_window = with_c_str("WM_DELETE_WINDOW", |delete_window|
+                ffi::XInternAtom(display, delete_window, 0)
+            );
+            ffi::XSetWMProtocols(display, window, &mut wm_delete_window, 1);
+            with_c_str(&*builder.title, |title| {;
+                ffi::XStoreName(display, window, title);
+            });
+            ffi::XFlush(display);
+
+            wm_delete_window
+        };
+
+        // creating IM
+        let im = unsafe {
+            let _lock = GLOBAL_XOPENIM_LOCK.lock().unwrap();
+
+            let im = ffi::XOpenIM(display, ptr::null_mut(), ptr::null_mut(), ptr::null_mut());
+            if im.is_null() {
+                return Err(OsError(format!("XOpenIM failed")));
+            }
+            im
+        };
+
+        // creating input context
+        let ic = unsafe {
+            let ic = with_c_str("inputStyle", |input_style|
+                with_c_str("clientWindow", |client_window|
+                    ffi::XCreateIC(
+                        im, input_style,
+                        ffi::XIMPreeditNothing | ffi::XIMStatusNothing, client_window,
+                        window, ptr::null::<()>()
+                    )
+                )
+            );
+            if ic.is_null() {
+                return Err(OsError(format!("XCreateIC failed")));
+            }
+            ffi::XSetICFocus(ic);
+            ic
+        };
+
+        // Attempt to make keyboard input repeat detectable
+        unsafe {
+            let mut supported_ptr = ffi::False;
+            ffi::XkbSetDetectableAutoRepeat(display, ffi::True, &mut supported_ptr);
+            if supported_ptr == ffi::False {
+                return Err(OsError(format!("XkbSetDetectableAutoRepeat failed")));
+            }
+        }
+
+        // Set ICCCM WM_CLASS property based on initial window title
+        unsafe {
+            with_c_str(&*builder.title, |c_name| {
+                let hint = ffi::XAllocClassHint();
+                (*hint).res_name = c_name as *mut i8;
+                (*hint).res_class = c_name as *mut i8;
+                ffi::XSetClassHint(display, window, hint);
+                ffi::XFree(hint as *mut libc::c_void);
+            });
+        }
+
+        // creating GL context
+        let (context, extra_functions) = unsafe {
+            let mut attributes = Vec::new();
+
+            match builder.gl_version {
+                GlRequest::Latest => {},
+                GlRequest::Specific(Api::OpenGl, (major, minor)) => {
+                    attributes.push(ffi::glx_extra::CONTEXT_MAJOR_VERSION_ARB as libc::c_int);
+                    attributes.push(major as libc::c_int);
+                    attributes.push(ffi::glx_extra::CONTEXT_MINOR_VERSION_ARB as libc::c_int);
+                    attributes.push(minor as libc::c_int);
+                },
+                GlRequest::Specific(_, _) => panic!("Only OpenGL is supported"),
+                GlRequest::GlThenGles { opengl_version: (major, minor), .. } => {
+                    attributes.push(ffi::glx_extra::CONTEXT_MAJOR_VERSION_ARB as libc::c_int);
+                    attributes.push(major as libc::c_int);
+                    attributes.push(ffi::glx_extra::CONTEXT_MINOR_VERSION_ARB as libc::c_int);
+                    attributes.push(minor as libc::c_int);
+                },
+            }
+
+            if builder.gl_debug {
+                attributes.push(ffi::glx_extra::CONTEXT_FLAGS_ARB as libc::c_int);
+                attributes.push(ffi::glx_extra::CONTEXT_DEBUG_BIT_ARB as libc::c_int);
+            }
+
+            attributes.push(0);
+
+            // loading the extra GLX functions
+            let extra_functions = ffi::glx_extra::Glx::load_with(|addr| {
+                with_c_str(addr, |s| {
+                    use libc;
+                    ffi::glx::GetProcAddress(s as *const u8) as *const libc::c_void
+                })
+            });
+
+            let share = if let Some(win) = builder.sharing {
+                win.x.context
+            } else {
+                ptr::null()
+            };
+
+            let mut context = if extra_functions.CreateContextAttribsARB.is_loaded() {
+                extra_functions.CreateContextAttribsARB(display as *mut ffi::glx_extra::types::Display,
+                    fb_config, share, 1, attributes.as_ptr())
+            } else {
+                ptr::null()
+            };
+
+            if context.is_null() {
+                context = ffi::glx::CreateContext(display as *mut _, &mut visual_infos, share, 1)
+            }
+
+            if context.is_null() {
+                return Err(OsError(format!("GL context creation failed")));
+            }
+
+            (context, extra_functions)
+        };
+
+        // vsync
+        if builder.vsync {
+            unsafe { ffi::glx::MakeCurrent(display as *mut _, window, context) };
+
+            if extra_functions.SwapIntervalEXT.is_loaded() {
+                // this should be the most common extension
+                unsafe {
+                    extra_functions.SwapIntervalEXT(display as *mut _, window, 1);
+                }
+
+                // checking that it worked
+                if builder.strict {
+                    let mut swap = unsafe { mem::uninitialized() };
+                    unsafe {
+                        ffi::glx::QueryDrawable(display as *mut _, window,
+                                                ffi::glx_extra::SWAP_INTERVAL_EXT as i32,
+                                                &mut swap);
+                    }
+
+                    if swap != 1 {
+                        return Err(OsError(format!("Couldn't setup vsync: expected \
+                                                    interval `1` but got `{}`", swap)));
+                    }
+                }
+
+            // GLX_MESA_swap_control is not official
+            /*} else if extra_functions.SwapIntervalMESA.is_loaded() {
+                unsafe {
+                    extra_functions.SwapIntervalMESA(1);
+                }*/
+
+            } else if extra_functions.SwapIntervalSGI.is_loaded() {
+                unsafe {
+                    extra_functions.SwapIntervalSGI(1);
+                }
+
+            } else if builder.strict {
+                return Err(OsError(format!("Couldn't find any available vsync extension")));
+            }
+
+            unsafe { ffi::glx::MakeCurrent(display as *mut _, 0, ptr::null()) };
+        }
+
+        // creating the window object
+        let window = Window {
+            x: Arc::new(XWindow {
+                display: display,
+                window: window,
+                im: im,
+                ic: ic,
+                context: context,
+                screen_id: screen_id,
+                is_fullscreen: builder.monitor.is_some(),
+                xf86_desk_mode: xf86_desk_mode,
+            }),
+            is_closed: AtomicBool::new(false),
+            wm_delete_window: wm_delete_window,
+            current_size: Cell::new((0, 0)),
+            pixel_format: pixel_format,
+            pending_events: Mutex::new(VecDeque::new()),
+            cursor_state: Mutex::new(CursorState::Normal),
+        };
+
+        // returning
+        Ok(window)
+    }
+
+    pub fn is_closed(&self) -> bool {
+        use std::sync::atomic::Ordering::Relaxed;
+        self.is_closed.load(Relaxed)
+    }
+
+    pub fn set_title(&self, title: &str) {
+        with_c_str(title, |title| unsafe {
+            ffi::XStoreName(self.x.display, self.x.window, title);
+            ffi::XFlush(self.x.display);
+        })
+    }
+
+    pub fn show(&self) {
+        unsafe {
+            ffi::XMapRaised(self.x.display, self.x.window);
+            ffi::XFlush(self.x.display);
+        }
+    }
+
+    pub fn hide(&self) {
+        unsafe {
+            ffi::XUnmapWindow(self.x.display, self.x.window);
+            ffi::XFlush(self.x.display);
+        }
+    }
+
+    fn get_geometry(&self) -> Option<(i32, i32, u32, u32, u32)> {
+        unsafe {
+            use std::mem;
+
+            let mut root: ffi::Window = mem::uninitialized();
+            let mut x: libc::c_int = mem::uninitialized();
+            let mut y: libc::c_int = mem::uninitialized();
+            let mut width: libc::c_uint = mem::uninitialized();
+            let mut height: libc::c_uint = mem::uninitialized();
+            let mut border: libc::c_uint = mem::uninitialized();
+            let mut depth: libc::c_uint = mem::uninitialized();
+
+            if ffi::XGetGeometry(self.x.display, self.x.window,
+                &mut root, &mut x, &mut y, &mut width, &mut height,
+                &mut border, &mut depth) == 0
+            {
+                return None;
+            }
+
+            Some((x as i32, y as i32, width as u32, height as u32, border as u32))
+        }
+    }
+
+    pub fn get_position(&self) -> Option<(i32, i32)> {
+        self.get_geometry().map(|(x, y, _, _, _)| (x, y))
+    }
+
+    pub fn set_position(&self, x: i32, y: i32) {
+        unsafe { ffi::XMoveWindow(self.x.display, self.x.window, x as libc::c_int, y as libc::c_int); }
+    }
+
+    pub fn get_inner_size(&self) -> Option<(u32, u32)> {
+        self.get_geometry().map(|(_, _, w, h, _)| (w, h))
+    }
+
+    pub fn get_outer_size(&self) -> Option<(u32, u32)> {
+        self.get_geometry().map(|(_, _, w, h, b)| (w + b, h + b))       // TODO: is this really outside?
+    }
+
+    pub fn set_inner_size(&self, _x: u32, _y: u32) {
+        unimplemented!()
+    }
+
+    pub fn create_window_proxy(&self) -> WindowProxy {
+        WindowProxy {
+            x: self.x.clone()
+        }
+    }
+
+    pub fn poll_events(&self) -> PollEventsIterator {
+        PollEventsIterator {
+            window: self
+        }
+    }
+
+    pub fn wait_events(&self) -> WaitEventsIterator {
+        WaitEventsIterator {
+            window: self
+        }
+    }
+
+    pub unsafe fn make_current(&self) {
+        let res = ffi::glx::MakeCurrent(self.x.display as *mut _, self.x.window, self.x.context);
+        if res == 0 {
+            panic!("glx::MakeCurrent failed");
+        }
+    }
+
+    pub fn is_current(&self) -> bool {
+        unsafe { ffi::glx::GetCurrentContext() == self.x.context }
+    }
+
+    pub fn get_proc_address(&self, addr: &str) -> *const () {
+        use std::mem;
+
+        unsafe {
+            with_c_str(addr, |s| {
+                ffi::glx::GetProcAddress(mem::transmute(s)) as *const ()
+            })
+        }
+    }
+
+    pub fn swap_buffers(&self) {
+        unsafe { ffi::glx::SwapBuffers(self.x.display as *mut _, self.x.window) }
+    }
+
+    pub fn platform_display(&self) -> *mut libc::c_void {
+        self.x.display as *mut libc::c_void
+    }
+
+    pub fn platform_window(&self) -> *mut libc::c_void {
+        unimplemented!()
+    }
+
+    /// See the docs in the crate root file.
+    pub fn get_api(&self) -> ::Api {
+        ::Api::OpenGl
+    }
+
+    pub fn get_pixel_format(&self) -> PixelFormat {
+        self.pixel_format.clone()
+    }
+
+    pub fn set_window_resize_callback(&mut self, _: Option<fn(u32, u32)>) {
+    }
+
+    pub fn set_cursor(&self, cursor: MouseCursor) {
+        unsafe {
+            use std::ffi::CString;
+            let cursor_name = match cursor {
+                MouseCursor::Alias => "link",
+                MouseCursor::Arrow => "arrow",
+                MouseCursor::Cell => "plus",
+                MouseCursor::Copy => "copy",
+                MouseCursor::Crosshair => "crosshair",
+                MouseCursor::Default => "left_ptr",
+                MouseCursor::Grabbing => "grabbing",
+                MouseCursor::Hand | MouseCursor::Grab => "hand",
+                MouseCursor::Help => "question_arrow",
+                MouseCursor::Move => "move",
+                MouseCursor::NoDrop => "circle",
+                MouseCursor::NotAllowed => "crossed_circle",
+                MouseCursor::Progress => "left_ptr_watch",
+
+                /// Resize cursors
+                MouseCursor::EResize => "right_side",
+                MouseCursor::NResize => "top_side",
+                MouseCursor::NeResize => "top_right_corner",
+                MouseCursor::NwResize => "top_left_corner",
+                MouseCursor::SResize => "bottom_side",
+                MouseCursor::SeResize => "bottom_right_corner",
+                MouseCursor::SwResize => "bottom_left_corner",
+                MouseCursor::WResize => "left_side",
+                MouseCursor::EwResize | MouseCursor::ColResize => "h_double_arrow",
+                MouseCursor::NsResize | MouseCursor::RowResize => "v_double_arrow",
+                MouseCursor::NwseResize => "bd_double_arrow",
+                MouseCursor::NeswResize => "fd_double_arrow",
+
+                MouseCursor::Text | MouseCursor::VerticalText => "xterm",
+                MouseCursor::Wait => "watch",
+
+                /// TODO: Find matching X11 cursors
+                MouseCursor::ContextMenu | MouseCursor::NoneCursor |
+                MouseCursor::AllScroll | MouseCursor::ZoomIn |
+                MouseCursor::ZoomOut => "left_ptr",
+            };
+            let c_string = CString::new(cursor_name.as_bytes().to_vec()).unwrap();
+            let xcursor = ffi::XcursorLibraryLoadCursor(self.x.display, c_string.as_ptr());
+            ffi::XDefineCursor (self.x.display, self.x.window, xcursor);
+            ffi::XFlush(self.x.display);
+        }
+    }
+
+    pub fn set_cursor_state(&self, state: CursorState) -> Result<(), String> {
+        let mut cursor_state = self.cursor_state.lock().unwrap();
+
+        match (state, *cursor_state) {
+            (CursorState::Normal, CursorState::Grab) => {
+                unsafe {
+                    ffi::XUngrabPointer(self.x.display, ffi::CurrentTime);
+                    *cursor_state = CursorState::Normal;
+                    Ok(())
+                }
+            },
+
+            (CursorState::Grab, CursorState::Normal) => {
+                unsafe {
+                    *cursor_state = CursorState::Grab;
+
+                    match ffi::XGrabPointer(
+                        self.x.display, self.x.window, ffi::False,
+                        (ffi::ButtonPressMask | ffi::ButtonReleaseMask | ffi::EnterWindowMask |
+                        ffi::LeaveWindowMask | ffi::PointerMotionMask | ffi::PointerMotionHintMask |
+                        ffi::Button1MotionMask | ffi::Button2MotionMask | ffi::Button3MotionMask |
+                        ffi::Button4MotionMask | ffi::Button5MotionMask | ffi::ButtonMotionMask |
+                        ffi::KeymapStateMask) as libc::c_uint,
+                        ffi::GrabModeAsync, ffi::GrabModeAsync,
+                        self.x.window, 0, ffi::CurrentTime
+                    ) {
+                        ffi::GrabSuccess => Ok(()),
+                        ffi::AlreadyGrabbed | ffi::GrabInvalidTime |
+                        ffi::GrabNotViewable | ffi::GrabFrozen
+                            => Err("cursor could not be grabbed".to_string()),
+                        _ => unreachable!(),
+                    }
+                }
+            },
+
+            _ => unimplemented!(),
+        }
+    }
+
+    pub fn hidpi_factor(&self) -> f32 {
+        1.0
+    }
+
+    pub fn set_cursor_position(&self, x: i32, y: i32) -> Result<(), ()> {
+        unsafe {
+            ffi::XWarpPointer(self.x.display, 0, self.x.window, 0, 0, 0, 0, x, y);
+        }
+
+        Ok(())
+    }
+}

src/api/x11/window/monitor.rs

@@ -0,0 +1,66 @@
+use std::ptr;
+use std::collections::VecDeque;
+use super::super::ffi;
+use super::ensure_thread_init;
+use native_monitor::NativeMonitorId;
+
+pub struct MonitorID(pub u32);
+
+pub fn get_available_monitors() -> VecDeque<MonitorID> {
+    ensure_thread_init();
+    let nb_monitors = unsafe {
+        let display = ffi::XOpenDisplay(ptr::null());
+        if display.is_null() {
+            panic!("get_available_monitors failed");
+        }
+        let nb_monitors = ffi::XScreenCount(display);
+        ffi::XCloseDisplay(display);
+        nb_monitors
+    };
+
+    let mut monitors = VecDeque::new();
+    monitors.extend((0..nb_monitors).map(|i| MonitorID(i as u32)));
+    monitors
+}
+
+pub fn get_primary_monitor() -> MonitorID {
+    ensure_thread_init();
+    let primary_monitor = unsafe {
+        let display = ffi::XOpenDisplay(ptr::null());
+        if display.is_null() {
+            panic!("get_available_monitors failed");
+        }
+        let primary_monitor = ffi::XDefaultScreen(display);
+        ffi::XCloseDisplay(display);
+        primary_monitor
+    };
+
+    MonitorID(primary_monitor as u32)
+}
+
+impl MonitorID {
+    pub fn get_name(&self) -> Option<String> {
+        let MonitorID(screen_num) = *self;
+        Some(format!("Monitor #{}", screen_num))
+    }
+
+    pub fn get_native_identifier(&self) -> NativeMonitorId {
+        let MonitorID(screen_num) = *self;
+        NativeMonitorId::Numeric(screen_num)
+    }
+
+    pub fn get_dimensions(&self) -> (u32, u32) {
+        let dimensions = unsafe {
+            let display = ffi::XOpenDisplay(ptr::null());
+            let MonitorID(screen_num) = *self;
+            let screen = ffi::XScreenOfDisplay(display, screen_num as i32);
+            let width = ffi::XWidthOfScreen(screen);
+            let height = ffi::XHeightOfScreen(screen);
+            ffi::XCloseDisplay(display);
+            (width as u32, height as u32)
+        };
+
+        dimensions
+    }
+}
+