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-rw-r--r--src/api/win32/mod.rs419
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+#![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);
+ }
+ }
+}