alex/winit-sonoma-fix
1
0
Fork 0
mirror of https://github.com/italicsjenga/winit-sonoma-fix.git synced 2024-12-25 23:01:30 +11:00
Code Issues Packages Projects Releases Wiki Activity

Merge branch 'master' of https://github.com/tomaka/winit into xim-send-spot

Browse source
This commit is contained in:
Determinant 2017-07-12 00:04:12 -04:00
parent aea61a74fb aad82eb987
commit f2ee78bcf5
16 changed files with 1329 additions and 1132 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

15
Cargo.toml
View file

@ -1,6 +1,6 @@
[package] [package]
name = "winit" name = "winit"
version = "0.6.4" version = "0.7.2"
authors = ["The winit contributors, Pierre Krieger <pierre.krieger1708@gmail.com>"] authors = ["The winit contributors, Pierre Krieger <pierre.krieger1708@gmail.com>"]
description = "Cross-platform window creation library." description = "Cross-platform window creation library."
keywords = ["windowing"] keywords = ["windowing"]
@ -23,10 +23,9 @@ objc = "0.2"
[target.'cfg(target_os = "macos")'.dependencies] [target.'cfg(target_os = "macos")'.dependencies]
objc = "0.2" objc = "0.2"
cgl = "0.2" cocoa = "0.9"
cocoa = "=0.5.2" core-foundation = "0.4"
core-foundation = "0.2" core-graphics = "0.8"
core-graphics = "0.4"
[target.'cfg(target_os = "windows")'.dependencies] [target.'cfg(target_os = "windows")'.dependencies]
winapi = "0.2" winapi = "0.2"
@ -37,8 +36,8 @@ kernel32-sys = "0.2"
dwmapi-sys = "0.1" dwmapi-sys = "0.1"
[target.'cfg(any(target_os = "linux", target_os = "dragonfly", target_os = "freebsd", target_os = "openbsd"))'.dependencies] [target.'cfg(any(target_os = "linux", target_os = "dragonfly", target_os = "freebsd", target_os = "openbsd"))'.dependencies]
wayland-client = { version = "0.8.6", features = ["dlopen"] } wayland-client = { version = "0.9.9", features = ["dlopen"] }
wayland-kbd = "0.8.0" wayland-kbd = "0.9.1"
wayland-window = "0.5.0" wayland-window = "0.6.1"
tempfile = "2.1" tempfile = "2.1"
x11-dl = "2.8" x11-dl = "2.8"

2
README.md
View file

@ -9,7 +9,7 @@
```toml ```toml
[dependencies] [dependencies]
winit = "0.6" winit = "0.7"
``` ```
## [Documentation](https://docs.rs/winit) ## [Documentation](https://docs.rs/winit)

12
src/lib.rs
View file

@ -104,8 +104,6 @@ extern crate dwmapi;
#[macro_use] #[macro_use]
extern crate objc; extern crate objc;
#[cfg(target_os = "macos")] #[cfg(target_os = "macos")]
extern crate cgl;
#[cfg(target_os = "macos")]
extern crate cocoa; extern crate cocoa;
#[cfg(target_os = "macos")] #[cfg(target_os = "macos")]
extern crate core_foundation; extern crate core_foundation;
@ -114,7 +112,7 @@ extern crate core_graphics;
#[cfg(any(target_os = "linux", target_os = "dragonfly", target_os = "freebsd", target_os = "openbsd"))] #[cfg(any(target_os = "linux", target_os = "dragonfly", target_os = "freebsd", target_os = "openbsd"))]
extern crate x11_dl; extern crate x11_dl;
#[cfg(any(target_os = "linux", target_os = "freebsd", target_os = "dragonfly", target_os = "openbsd"))] #[cfg(any(target_os = "linux", target_os = "freebsd", target_os = "dragonfly", target_os = "openbsd"))]
#[macro_use(wayland_env,declare_handler)] #[macro_use]
extern crate wayland_client; extern crate wayland_client;
pub use events::*; pub use events::*;
@ -181,6 +179,14 @@ pub struct ButtonId(u32);
/// Provides a way to retreive events from the windows that were registered to it. /// Provides a way to retreive events from the windows that were registered to it.
/// ///
/// To wake up an `EventsLoop` from a another thread, see the `EventsLoopProxy` docs. /// To wake up an `EventsLoop` from a another thread, see the `EventsLoopProxy` docs.
///
/// Usage will result in display backend initialisation, this can be controlled on linux
/// using an environment variable `WINIT_UNIX_BACKEND`.
/// > Legal values are `x11` and `wayland`. If this variable is set only the named backend
/// > will be tried by winit. If it is not set, winit will try to connect to a wayland connection,
/// > and if it fails will fallback on x11.
/// >
/// > If this variable is set with any other value, winit will panic.
pub struct EventsLoop { pub struct EventsLoop {
events_loop: platform::EventsLoop, events_loop: platform::EventsLoop,
} }

40
src/os/unix.rs
View file

@ -10,9 +10,6 @@ use WindowBuilder;
use platform::x11::XConnection; use platform::x11::XConnection;
use platform::x11::ffi::XVisualInfo; use platform::x11::ffi::XVisualInfo;
use wayland_client::protocol::wl_display::WlDisplay;
use wayland_client::protocol::wl_surface::WlSurface;
pub use platform::x11; pub use platform::x11;
// TODO: do not expose XConnection // TODO: do not expose XConnection
@ -65,24 +62,6 @@ pub trait WindowExt {
/// ///
/// The pointer will become invalid when the glutin `Window` is destroyed. /// The pointer will become invalid when the glutin `Window` is destroyed.
fn get_wayland_display(&self) -> Option<*mut libc::c_void>; fn get_wayland_display(&self) -> Option<*mut libc::c_void>;
/// Returns a reference to the `WlSurface` object of wayland that is used by this window.
///
/// For use with the `wayland-client` crate.
///
/// **This function is not part of winit's public API.**
///
/// Returns `None` if the window doesn't use wayland (if it uses xlib for example).
fn get_wayland_client_surface(&self) -> Option<&WlSurface>;
/// Returns a pointer to the `WlDisplay` object of wayland that is used by this window.
///
/// For use with the `wayland-client` crate.
///
/// **This function is not part of winit's public API.**
///
/// Returns `None` if the window doesn't use wayland (if it uses xlib for example).
fn get_wayland_client_display(&self) -> Option<&WlDisplay>;
} }
impl WindowExt for Window { impl WindowExt for Window {
@ -132,28 +111,17 @@ impl WindowExt for Window {
#[inline] #[inline]
fn get_wayland_surface(&self) -> Option<*mut libc::c_void> { fn get_wayland_surface(&self) -> Option<*mut libc::c_void> {
use wayland_client::Proxy; use wayland_client::Proxy;
self.get_wayland_client_surface().map(|p| p.ptr() as *mut _)
}
#[inline]
fn get_wayland_display(&self) -> Option<*mut libc::c_void> {
use wayland_client::Proxy;
self.get_wayland_client_display().map(|p| p.ptr() as *mut _)
}
#[inline]
fn get_wayland_client_surface(&self) -> Option<&WlSurface> {
match self.window { match self.window {
LinuxWindow::Wayland(ref w) => Some(w.get_surface()), LinuxWindow::Wayland(ref w) => Some(w.get_surface().ptr() as *mut _),
_ => None _ => None
} }
} }
#[inline] #[inline]
fn get_wayland_client_display(&self) -> Option<&WlDisplay> { fn get_wayland_display(&self) -> Option<*mut libc::c_void> {
use wayland_client::Proxy;
match self.window { match self.window {
LinuxWindow::Wayland(ref w) => Some(w.get_display()), LinuxWindow::Wayland(ref w) => Some(w.get_display().ptr() as *mut _),
_ => None _ => None
} }
} }

2
src/os/windows.rs
View file

@ -18,7 +18,7 @@ pub trait WindowExt {
impl WindowExt for Window { impl WindowExt for Window {
#[inline] #[inline]
fn get_hwnd(&self) -> *mut libc::c_void { fn get_hwnd(&self) -> *mut libc::c_void {
self.window.platform_window() self.window.hwnd() as *mut _
} }
} }

4
src/platform/android/mod.rs
View file

@ -82,6 +82,7 @@ impl<'a> Iterator for PollEventsIterator<'a> {
}, },
location: (motion.x as f64, motion.y as f64), location: (motion.x as f64, motion.y as f64),
id: motion.pointer_id as u64, id: motion.pointer_id as u64,
device_id: DEVICE_ID,
})) }))
}, },
Ok(android_glue::Event::InitWindow) => { Ok(android_glue::Event::InitWindow) => {
@ -273,3 +274,6 @@ impl WindowProxy {
android_glue::wake_event_loop(); android_glue::wake_event_loop();
} }
} }
// Constant device ID, to be removed when this backend is updated to report real device IDs.
const DEVICE_ID: ::DeviceId = ::DeviceId(DeviceId);

2
src/platform/ios/ffi.rs
View file

@ -66,7 +66,7 @@ extern {
pub fn longjmp(env: *mut libc::c_void, val: libc::c_int); pub fn longjmp(env: *mut libc::c_void, val: libc::c_int);
} }
pub trait NSString { pub trait NSString: Sized {
unsafe fn alloc(_: Self) -> id { unsafe fn alloc(_: Self) -> id {
msg_send![class("NSString"), alloc] msg_send![class("NSString"), alloc]
} }

53
src/platform/linux/mod.rs
View file

@ -2,6 +2,7 @@
use std::collections::VecDeque; use std::collections::VecDeque;
use std::sync::Arc; use std::sync::Arc;
use std::env;
use {CreationError, CursorState, EventsLoopClosed, MouseCursor, ControlFlow}; use {CreationError, CursorState, EventsLoopClosed, MouseCursor, ControlFlow};
use libc; use libc;
@ -15,6 +16,15 @@ mod dlopen;
pub mod wayland; pub mod wayland;
pub mod x11; pub mod x11;
/// Environment variable specifying which backend should be used on unix platform.
///
/// Legal values are x11 and wayland. If this variable is set only the named backend
/// will be tried by winit. If it is not set, winit will try to connect to a wayland connection,
/// and if it fails will fallback on x11.
///
/// If this variable is set with any other value, winit will panic.
const BACKEND_PREFERENCE_ENV_VAR: &str = "WINIT_UNIX_BACKEND";
#[derive(Clone, Default)] #[derive(Clone, Default)]
pub struct PlatformSpecificWindowBuilderAttributes { pub struct PlatformSpecificWindowBuilderAttributes {
pub visual_infos: Option<XVisualInfo>, pub visual_infos: Option<XVisualInfo>,
@ -24,19 +34,42 @@ pub struct PlatformSpecificWindowBuilderAttributes {
pub enum UnixBackend { pub enum UnixBackend {
X(Arc<XConnection>), X(Arc<XConnection>),
Wayland(Arc<wayland::WaylandContext>), Wayland(Arc<wayland::WaylandContext>),
Error(XNotSupported), Error(Option<XNotSupported>, Option<String>),
} }
lazy_static!( lazy_static!(
pub static ref UNIX_BACKEND: UnixBackend = { pub static ref UNIX_BACKEND: UnixBackend = {
if let Some(ctxt) = wayland::WaylandContext::init() { #[inline]
UnixBackend::Wayland(Arc::new(ctxt)) fn x_backend() -> Result<UnixBackend, XNotSupported> {
} else {
match XConnection::new(Some(x_error_callback)) { match XConnection::new(Some(x_error_callback)) {
Ok(x) => UnixBackend::X(Arc::new(x)), Ok(x) => Ok(UnixBackend::X(Arc::new(x))),
Err(e) => UnixBackend::Error(e), Err(e) => Err(e),
} }
} }
#[inline]
fn wayland_backend() -> Result<UnixBackend, ()> {
wayland::WaylandContext::init()
.map(|ctx| UnixBackend::Wayland(Arc::new(ctx)))
.ok_or(())
}
match env::var(BACKEND_PREFERENCE_ENV_VAR) {
Ok(s) => match s.as_str() {
"x11" => x_backend().unwrap_or_else(|e| UnixBackend::Error(Some(e), None)),
"wayland" => wayland_backend().unwrap_or_else(|_| {
UnixBackend::Error(None, Some("Wayland not available".into()))
}),
_ => panic!("Unknown environment variable value for {}, try one of `x11`,`wayland`",
BACKEND_PREFERENCE_ENV_VAR),
},
Err(_) => {
// Try wayland, fallback to X11
wayland_backend().unwrap_or_else(|_| {
x_backend().unwrap_or_else(|x_err| {
UnixBackend::Error(Some(x_err), Some("Wayland not available".into()))
})
})
},
}
}; };
); );
@ -85,7 +118,7 @@ pub fn get_available_monitors() -> VecDeque<MonitorId> {
.into_iter() .into_iter()
.map(MonitorId::X) .map(MonitorId::X)
.collect(), .collect(),
UnixBackend::Error(_) => { let mut d = VecDeque::new(); d.push_back(MonitorId::None); d}, UnixBackend::Error(..) => { let mut d = VecDeque::new(); d.push_back(MonitorId::None); d},
} }
} }
@ -94,7 +127,7 @@ pub fn get_primary_monitor() -> MonitorId {
match *UNIX_BACKEND { match *UNIX_BACKEND {
UnixBackend::Wayland(ref ctxt) => MonitorId::Wayland(wayland::get_primary_monitor(ctxt)), UnixBackend::Wayland(ref ctxt) => MonitorId::Wayland(wayland::get_primary_monitor(ctxt)),
UnixBackend::X(ref connec) => MonitorId::X(x11::get_primary_monitor(connec)), UnixBackend::X(ref connec) => MonitorId::X(x11::get_primary_monitor(connec)),
UnixBackend::Error(_) => MonitorId::None, UnixBackend::Error(..) => MonitorId::None,
} }
} }
@ -147,7 +180,7 @@ impl Window2 {
UnixBackend::X(_) => { UnixBackend::X(_) => {
x11::Window2::new(events_loop, window, pl_attribs).map(Window2::X) x11::Window2::new(events_loop, window, pl_attribs).map(Window2::X)
}, },
UnixBackend::Error(_) => { UnixBackend::Error(..) => {
// If the Backend is Error(), it is not possible to instanciate an EventsLoop at all, // If the Backend is Error(), it is not possible to instanciate an EventsLoop at all,
// thus this function cannot be called! // thus this function cannot be called!
unreachable!() unreachable!()
@ -324,7 +357,7 @@ impl EventsLoop {
EventsLoop::X(x11::EventsLoop::new(ctxt.clone())) EventsLoop::X(x11::EventsLoop::new(ctxt.clone()))
}, },
UnixBackend::Error(_) => { UnixBackend::Error(..) => {
panic!("Attempted to create an EventsLoop while no backend was available.") panic!("Attempted to create an EventsLoop while no backend was available.")
} }
} }

8
src/platform/linux/wayland/event_loop.rs
View file

@ -7,7 +7,7 @@ use std::sync::atomic::{self, AtomicBool};
use super::{DecoratedHandler, WindowId, DeviceId, WaylandContext}; use super::{DecoratedHandler, WindowId, DeviceId, WaylandContext};
use wayland_client::{EventQueue, EventQueueHandle, Init, Proxy}; use wayland_client::{EventQueue, EventQueueHandle, Init, Proxy, Liveness};
use wayland_client::protocol::{wl_seat, wl_surface, wl_pointer, wl_keyboard}; use wayland_client::protocol::{wl_seat, wl_surface, wl_pointer, wl_keyboard};
use super::make_wid; use super::make_wid;
@ -159,13 +159,13 @@ impl EventsLoop {
} }
fn prune_dead_windows(&self) { fn prune_dead_windows(&self) {
self.decorated_ids.lock().unwrap().retain(|&(_, ref w)| w.is_alive()); self.decorated_ids.lock().unwrap().retain(|&(_, ref w)| w.status() == Liveness::Alive);
let mut evq_guard = self.evq.lock().unwrap(); let mut evq_guard = self.evq.lock().unwrap();
let mut state = evq_guard.state(); let mut state = evq_guard.state();
let handler = state.get_mut_handler::<InputHandler>(self.hid); let handler = state.get_mut_handler::<InputHandler>(self.hid);
handler.windows.retain(|w| w.is_alive()); handler.windows.retain(|w| w.status() == Liveness::Alive);
if let Some(w) = handler.mouse_focus.take() { if let Some(w) = handler.mouse_focus.take() {
if w.is_alive() { if w.status() == Liveness::Alive {
handler.mouse_focus = Some(w) handler.mouse_focus = Some(w)
} }
} }

18
src/platform/macos/window.rs
View file

@ -338,21 +338,17 @@ impl Window {
let masks = if screen.is_some() { let masks = if screen.is_some() {
// Fullscreen window // Fullscreen window
appkit::NSBorderlessWindowMask as NSUInteger | appkit::NSBorderlessWindowMask | appkit::NSResizableWindowMask |
appkit::NSResizableWindowMask as NSUInteger | appkit::NSTitledWindowMask
appkit::NSTitledWindowMask as NSUInteger
} else if attrs.decorations { } else if attrs.decorations {
// Window with a titlebar // Window with a titlebar
appkit::NSClosableWindowMask as NSUInteger | appkit::NSClosableWindowMask | appkit::NSMiniaturizableWindowMask |
appkit::NSMiniaturizableWindowMask as NSUInteger | appkit::NSResizableWindowMask | appkit::NSTitledWindowMask
appkit::NSResizableWindowMask as NSUInteger |
appkit::NSTitledWindowMask as NSUInteger
} else { } else {
// Window without a titlebar // Window without a titlebar
appkit::NSClosableWindowMask as NSUInteger | appkit::NSClosableWindowMask | appkit::NSMiniaturizableWindowMask |
appkit::NSMiniaturizableWindowMask as NSUInteger | appkit::NSResizableWindowMask |
appkit::NSResizableWindowMask as NSUInteger | appkit::NSFullSizeContentViewWindowMask
appkit::NSFullSizeContentViewWindowMask as NSUInteger
}; };
let window = IdRef::new(NSWindow::alloc(nil).initWithContentRect_styleMask_backing_defer_( let window = IdRef::new(NSWindow::alloc(nil).initWithContentRect_styleMask_backing_defer_(

426
src/platform/windows/callback.rs
View file

@ -1,426 +0,0 @@
use std::mem;
use std::ptr;
use std::cell::RefCell;
use std::sync::mpsc::Sender;
use std::sync::{Arc, Mutex};
use std::ffi::OsString;
use std::os::windows::ffi::OsStringExt;
use CursorState;
use WindowEvent as Event;
use KeyboardInput;
use events::ModifiersState;
use super::event;
use super::WindowState;
use user32;
use shell32;
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 window_state: Arc<Mutex<WindowState>>,
pub mouse_in_window: bool
}
/// Equivalent to the windows api [MINMAXINFO](https://msdn.microsoft.com/en-us/library/windows/desktop/ms632605%28v=vs.85%29.aspx)
/// struct. Used because winapi-rs doesn't have this declared.
#[repr(C)]
#[allow(dead_code)]
struct MinMaxInfo {
reserved: winapi::POINT, // Do not use/change
max_size: winapi::POINT,
max_position: winapi::POINT,
min_track: winapi::POINT,
max_track: winapi::POINT
}
/// 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.
// FIXME: detect WM_DWMCOMPOSITIONCHANGED and call DwmEnableBlurBehindWindow if necessary
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::WindowEvent::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::WindowEvent::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::WindowEvent::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::WindowEvent::ReceivedCharacter;
let chr: char = mem::transmute(wparam as u32);
send_event(window, ReceivedCharacter(chr));
0
},
// Prevents default windows menu hotkeys playing unwanted
// "ding" sounds. Alternatively could check for WM_SYSCOMMAND
// with wparam being SC_KEYMENU, but this may prevent some
// other unwanted default hotkeys as well.
winapi::WM_SYSCHAR => {
0
}
winapi::WM_MOUSEMOVE => {
use events::WindowEvent::{MouseEntered, MouseMoved};
let mouse_outside_window = CONTEXT_STASH.with(|context_stash| {
let mut context_stash = context_stash.borrow_mut();
if let Some(context_stash) = context_stash.as_mut() {
if !context_stash.mouse_in_window {
context_stash.mouse_in_window = true;
return true;
}
}
false
});
if mouse_outside_window {
send_event(window, MouseEntered { device_id: DEVICE_ID });
// Calling TrackMouseEvent in order to receive mouse leave events.
user32::TrackMouseEvent(&mut winapi::TRACKMOUSEEVENT {
cbSize: mem::size_of::<winapi::TRACKMOUSEEVENT>() as winapi::DWORD,
dwFlags: winapi::TME_LEAVE,
hwndTrack: window,
dwHoverTime: winapi::HOVER_DEFAULT,
});
}
let x = winapi::GET_X_LPARAM(lparam) as f64;
let y = winapi::GET_Y_LPARAM(lparam) as f64;
send_event(window, MouseMoved { device_id: DEVICE_ID, position: (x, y) });
0
},
winapi::WM_MOUSELEAVE => {
use events::WindowEvent::MouseLeft;
let mouse_in_window = CONTEXT_STASH.with(|context_stash| {
let mut context_stash = context_stash.borrow_mut();
if let Some(context_stash) = context_stash.as_mut() {
if context_stash.mouse_in_window {
context_stash.mouse_in_window = false;
return true;
}
}
false
});
if mouse_in_window {
send_event(window, MouseLeft { device_id: DEVICE_ID });
}
0
},
winapi::WM_MOUSEWHEEL => {
use events::WindowEvent::MouseWheel;
use events::MouseScrollDelta::LineDelta;
use events::TouchPhase;
let value = (wparam >> 16) as i16;
let value = value as i32;
let value = value as f32 / winapi::WHEEL_DELTA as f32;
send_event(window, MouseWheel { device_id: DEVICE_ID, delta: LineDelta(0.0, value), phase: TouchPhase::Moved });
0
},
winapi::WM_KEYDOWN | winapi::WM_SYSKEYDOWN => {
use events::ElementState::Pressed;
if msg == winapi::WM_SYSKEYDOWN && wparam as i32 == winapi::VK_F4 {
user32::DefWindowProcW(window, msg, wparam, lparam)
} else {
let (scancode, vkey) = event::vkeycode_to_element(wparam, lparam);
send_event(window, Event::KeyboardInput {
device_id: DEVICE_ID,
input: KeyboardInput {
state: Pressed,
scancode: scancode,
virtual_keycode: vkey,
modifiers: event::get_key_mods(),
}
});
0
}
},
winapi::WM_KEYUP | winapi::WM_SYSKEYUP => {
use events::ElementState::Released;
let (scancode, vkey) = event::vkeycode_to_element(wparam, lparam);
send_event(window, Event::KeyboardInput {
device_id: DEVICE_ID,
input: KeyboardInput {
state: Released,
scancode: scancode,
virtual_keycode: vkey,
modifiers: event::get_key_mods(),
},
});
0
},
winapi::WM_LBUTTONDOWN => {
use events::WindowEvent::MouseInput;
use events::MouseButton::Left;
use events::ElementState::Pressed;
send_event(window, MouseInput { device_id: DEVICE_ID, state: Pressed, button: Left });
0
},
winapi::WM_LBUTTONUP => {
use events::WindowEvent::MouseInput;
use events::MouseButton::Left;
use events::ElementState::Released;
send_event(window, MouseInput { device_id: DEVICE_ID, state: Released, button: Left });
0
},
winapi::WM_RBUTTONDOWN => {
use events::WindowEvent::MouseInput;
use events::MouseButton::Right;
use events::ElementState::Pressed;
send_event(window, MouseInput { device_id: DEVICE_ID, state: Pressed, button: Right });
0
},
winapi::WM_RBUTTONUP => {
use events::WindowEvent::MouseInput;
use events::MouseButton::Right;
use events::ElementState::Released;
send_event(window, MouseInput { device_id: DEVICE_ID, state: Released, button: Right });
0
},
winapi::WM_MBUTTONDOWN => {
use events::WindowEvent::MouseInput;
use events::MouseButton::Middle;
use events::ElementState::Pressed;
send_event(window, MouseInput { device_id: DEVICE_ID, state: Pressed, button: Middle });
0
},
winapi::WM_MBUTTONUP => {
use events::WindowEvent::MouseInput;
use events::MouseButton::Middle;
use events::ElementState::Released;
send_event(window, MouseInput { device_id: DEVICE_ID, state: Released, button: Middle });
0
},
winapi::WM_XBUTTONDOWN => {
use events::WindowEvent::MouseInput;
use events::MouseButton::Other;
use events::ElementState::Pressed;
let xbutton = winapi::HIWORD(wparam as winapi::DWORD) as winapi::c_int; // waiting on PR for winapi to add GET_XBUTTON_WPARAM
send_event(window, MouseInput { device_id: DEVICE_ID, state: Pressed, button: Other(xbutton as u8) });
0
},
winapi::WM_XBUTTONUP => {
use events::WindowEvent::MouseInput;
use events::MouseButton::Other;
use events::ElementState::Released;
let xbutton = winapi::HIWORD(wparam as winapi::DWORD) as winapi::c_int;
send_event(window, MouseInput { device_id: DEVICE_ID, state: Released, button: Other(xbutton as u8) });
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::WindowEvent::Focused;
send_event(window, Focused(true));
0
},
winapi::WM_KILLFOCUS => {
use events::WindowEvent::Focused;
send_event(window, Focused(false));
0
},
winapi::WM_SETCURSOR => {
let call_def_window_proc = CONTEXT_STASH.with(|context_stash| {
let cstash = context_stash.borrow();
let mut call_def_window_proc = false;
if let Some(cstash) = cstash.as_ref() {
if let Ok(window_state) = cstash.window_state.lock() {
if cstash.mouse_in_window {
match window_state.cursor_state {
CursorState::Normal => {
user32::SetCursor(user32::LoadCursorW(
ptr::null_mut(),
window_state.cursor));
},
CursorState::Grab | CursorState::Hide => {
user32::SetCursor(ptr::null_mut());
}
}
} else {
call_def_window_proc = true;
}
}
}
call_def_window_proc
});
if call_def_window_proc {
user32::DefWindowProcW(window, msg, wparam, lparam)
} else {
0
}
},
winapi::WM_DROPFILES => {
use events::WindowEvent::DroppedFile;
let hdrop = wparam as winapi::HDROP;
let mut pathbuf: [u16; winapi::MAX_PATH] = mem::uninitialized();
let num_drops = shell32::DragQueryFileW(hdrop, 0xFFFFFFFF, ptr::null_mut(), 0);
for i in 0..num_drops {
let nch = shell32::DragQueryFileW(hdrop, i, pathbuf.as_mut_ptr(),
winapi::MAX_PATH as u32) as usize;
if nch > 0 {
send_event(window, DroppedFile(OsString::from_wide(&pathbuf[0..nch]).into()));
}
}
shell32::DragFinish(hdrop);
0
},
winapi::WM_GETMINMAXINFO => {
let mmi = lparam as *mut MinMaxInfo;
//(*mmi).max_position = winapi::POINT { x: -8, y: -8 }; // The upper left corner of the window if it were maximized on the primary monitor.
//(*mmi).max_size = winapi::POINT { x: .., y: .. }; // The dimensions of the primary monitor.
CONTEXT_STASH.with(|context_stash| {
match context_stash.borrow().as_ref() {
Some(cstash) => {
let window_state = cstash.window_state.lock().unwrap();
match window_state.attributes.min_dimensions {
Some((width, height)) => {
(*mmi).min_track = winapi::POINT { x: width as i32, y: height as i32 };
},
None => { }
}
match window_state.attributes.max_dimensions {
Some((width, height)) => {
(*mmi).max_track = winapi::POINT { x: width as i32, y: height as i32 };
},
None => { }
}
},
None => { }
}
});
0
},
x if x == *super::WAKEUP_MSG_ID => {
// TODO: `Awakened` has been moved from the `WindowEvent` enum to the `Event` enum.
// This code needs to be updated to reflect this change.
//send_event(window, ::Event::Awakened);
0
},
_ => {
user32::DefWindowProcW(window, msg, wparam, lparam)
}
}
}
// Constant device ID, to be removed when this backend is updated to report real device IDs.
const DEVICE_ID: ::DeviceId = ::DeviceId(super::DeviceId);

715
src/platform/windows/events_loop.rs Normal file
View file

@ -0,0 +1,715 @@
//! An events loop on Win32 is a background thread.
//!
//! Creating an events loop spawns a thread and blocks it in a permanent Win32 events loop.
//! Destroying the events loop stops the thread.
//!
//! You can use the `execute_in_thread` method to execute some code in the background thread.
//! Since Win32 requires you to create a window in the right thread, you must use this method
//! to create a window.
//!
//! If you create a window whose class is set to `callback`, the window's events will be
//! propagated with `run_forever` and `poll_events`.
//! The closure passed to the `execute_in_thread` method takes an `Inserter` that you can use to
//! add a `WindowState` entry to a list of window to be used by the callback.
use std::cell::RefCell;
use std::collections::HashMap;
use std::ffi::OsString;
use std::mem;
use std::os::windows::ffi::OsStringExt;
use std::os::windows::io::AsRawHandle;
use std::ptr;
use std::sync::mpsc;
use std::sync::Arc;
use std::sync::Mutex;
use std::thread;
use kernel32;
use shell32;
use user32;
use winapi;
use platform::platform::event;
use platform::platform::Cursor;
use platform::platform::WindowId;
use platform::platform::DEVICE_ID;
use ControlFlow;
use CursorState;
use Event;
use EventsLoopClosed;
use KeyboardInput;
use WindowAttributes;
use WindowEvent;
use WindowId as SuperWindowId;
use AxisId;
/// Contains information about states and the window that the callback is going to use.
#[derive(Clone)]
pub struct WindowState {
/// Cursor to set at the next `WM_SETCURSOR` event received.
pub cursor: Cursor,
/// Cursor state to set at the next `WM_SETCURSOR` event received.
pub cursor_state: CursorState,
/// Used by `WM_GETMINMAXINFO`.
pub attributes: WindowAttributes,
/// Will contain `true` if the mouse is hovering the window.
pub mouse_in_window: bool,
}
/// Dummy object that allows inserting a window's state.
// We store a pointer in order to !impl Send and Sync.
pub struct Inserter(*mut u8);
impl Inserter {
/// Inserts a window's state for the callback to use. The state is removed automatically if the
/// callback receives a `WM_CLOSE` message for the window.
pub fn insert(&self, window: winapi::HWND, state: Arc<Mutex<WindowState>>) {
CONTEXT_STASH.with(|context_stash| {
let mut context_stash = context_stash.borrow_mut();
let was_in = context_stash.as_mut().unwrap().windows.insert(window, state);
assert!(was_in.is_none());
});
}
}
pub struct EventsLoop {
// Id of the background thread from the Win32 API.
thread_id: winapi::DWORD,
// Receiver for the events. The sender is in the background thread.
receiver: mpsc::Receiver<Event>,
}
impl EventsLoop {
pub fn new() -> EventsLoop {
// The main events transfer channel.
let (tx, rx) = mpsc::channel();
// Local channel in order to block the `new()` function until the background thread has
// an events queue.
let (local_block_tx, local_block_rx) = mpsc::channel();
let thread = thread::spawn(move || {
CONTEXT_STASH.with(|context_stash| {
*context_stash.borrow_mut() = Some(ThreadLocalData {
sender: tx,
windows: HashMap::with_capacity(4),
});
});
unsafe {
let mut msg = mem::uninitialized();
// Calling `PostThreadMessageA` on a thread that does not have an events queue yet
// will fail. In order to avoid this situation, we call `PeekMessage` to initialize
// it.
user32::PeekMessageA(&mut msg, ptr::null_mut(), 0, 0, 0);
// Then only we unblock the `new()` function. We are sure that we don't call
// `PostThreadMessageA()` before `new()` returns.
local_block_tx.send(()).unwrap();
loop {
if user32::GetMessageW(&mut msg, ptr::null_mut(), 0, 0) == 0 {
// Only happens if the message is `WM_QUIT`.
debug_assert_eq!(msg.message, winapi::WM_QUIT);
break;
}
match msg.message {
x if x == *EXEC_MSG_ID => {
let mut function: Box<Box<FnMut(Inserter)>> = Box::from_raw(msg.wParam as usize as *mut _);
function(Inserter(ptr::null_mut()));
},
x if x == *WAKEUP_MSG_ID => {
send_event(Event::Awakened);
},
_ => {
// Calls `callback` below.
user32::TranslateMessage(&msg);
user32::DispatchMessageW(&msg);
}
}
}
}
});
// Blocks this function until the background thread has an events loop. See other comments.
local_block_rx.recv().unwrap();
EventsLoop {
thread_id: unsafe { kernel32::GetThreadId(thread.as_raw_handle()) },
receiver: rx,
}
}
pub fn poll_events<F>(&mut self, mut callback: F)
where F: FnMut(Event)
{
loop {
let event = match self.receiver.try_recv() {
Ok(e) => e,
Err(_) => return
};
callback(event);
}
}
pub fn run_forever<F>(&mut self, mut callback: F)
where F: FnMut(Event) -> ControlFlow
{
loop {
let event = match self.receiver.recv() {
Ok(e) => e,
Err(_) => return
};
let flow = callback(event);
match flow {
ControlFlow::Continue => continue,
ControlFlow::Break => break,
}
}
}
pub fn create_proxy(&self) -> EventsLoopProxy {
EventsLoopProxy {
thread_id: self.thread_id,
}
}
/// Executes a function in the background thread.
///
/// Note that we use a FnMut instead of a FnOnce because we're too lazy to create an equivalent
/// to the unstable FnBox.
///
/// The `Inserted` can be used to inject a `WindowState` for the callback to use. The state is
/// removed automatically if the callback receives a `WM_CLOSE` message for the window.
pub(super) fn execute_in_thread<F>(&self, function: F)
where F: FnMut(Inserter) + Send + 'static
{
unsafe {
let boxed = Box::new(function) as Box<FnMut(_)>;
let boxed2 = Box::new(boxed);
let raw = Box::into_raw(boxed2);
let res = user32::PostThreadMessageA(self.thread_id, *EXEC_MSG_ID,
raw as *mut () as usize as winapi::WPARAM, 0);
// PostThreadMessage can only fail if the thread ID is invalid (which shouldn't happen
// as the events loop is still alive) or if the queue is full.
assert!(res != 0, "PostThreadMessage failed ; is the messages queue full?");
}
}
}
impl Drop for EventsLoop {
fn drop(&mut self) {
unsafe {
// Posting `WM_QUIT` will cause `GetMessage` to stop.
user32::PostThreadMessageA(self.thread_id, winapi::WM_QUIT, 0, 0);
}
}
}
pub struct EventsLoopProxy {
thread_id: winapi::DWORD,
}
impl EventsLoopProxy {
pub fn wakeup(&self) -> Result<(), EventsLoopClosed> {
unsafe {
if user32::PostThreadMessageA(self.thread_id, *WAKEUP_MSG_ID, 0, 0) != 0 {
Ok(())
} else {
// https://msdn.microsoft.com/fr-fr/library/windows/desktop/ms644946(v=vs.85).aspx
// > If the function fails, the return value is zero. To get extended error
// > information, call GetLastError. GetLastError returns ERROR_INVALID_THREAD_ID
// > if idThread is not a valid thread identifier, or if the thread specified by
// > idThread does not have a message queue. GetLastError returns
// > ERROR_NOT_ENOUGH_QUOTA when the message limit is hit.
// TODO: handle ERROR_NOT_ENOUGH_QUOTA
Err(EventsLoopClosed)
}
}
}
}
lazy_static! {
// Message sent by the `EventsLoopProxy` when we want to wake up the thread.
// WPARAM and LPARAM are unused.
static ref WAKEUP_MSG_ID: u32 = {
unsafe {
user32::RegisterWindowMessageA("Winit::WakeupMsg".as_ptr() as *const i8)
}
};
// Message sent when we want to execute a closure in the thread.
// WPARAM contains a Box<Box<FnMut()>> that must be retreived with `Box::from_raw`,
// and LPARAM is unused.
static ref EXEC_MSG_ID: u32 = {
unsafe {
user32::RegisterWindowMessageA("Winit::ExecMsg".as_ptr() as *const i8)
}
};
}
// There's no parameters passed to the callback function, so it needs to get its context stashed
// in a thread-local variable.
thread_local!(static CONTEXT_STASH: RefCell<Option<ThreadLocalData>> = RefCell::new(None));
struct ThreadLocalData {
sender: mpsc::Sender<Event>,
windows: HashMap<winapi::HWND, Arc<Mutex<WindowState>>>,
}
// Utility function that dispatches an event on the current thread.
fn send_event(event: Event) {
CONTEXT_STASH.with(|context_stash| {
let context_stash = context_stash.borrow();
let _ = context_stash.as_ref().unwrap().sender.send(event); // Ignoring if closed
});
}
/// Any window whose callback is configured to this function will have its events propagated
/// through the events loop of the thread the window was created in.
//
// 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.
// FIXME: detect WM_DWMCOMPOSITIONCHANGED and call DwmEnableBlurBehindWindow if necessary
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::WindowEvent::Closed;
send_event(Event::WindowEvent {
window_id: SuperWindowId(WindowId(window)),
event: Closed
});
CONTEXT_STASH.with(|context_stash| {
let mut context_stash = context_stash.borrow_mut();
context_stash.as_mut().unwrap().windows.remove(&window);
});
0
},
winapi::WM_ERASEBKGND => {
1
},
winapi::WM_SIZE => {
use events::WindowEvent::Resized;
let w = winapi::LOWORD(lparam as winapi::DWORD) as u32;
let h = winapi::HIWORD(lparam as winapi::DWORD) as u32;
send_event(Event::WindowEvent {
window_id: SuperWindowId(WindowId(window)),
event: Resized(w, h),
});
0
},
winapi::WM_MOVE => {
use events::WindowEvent::Moved;
let x = winapi::LOWORD(lparam as winapi::DWORD) as i32;
let y = winapi::HIWORD(lparam as winapi::DWORD) as i32;
send_event(Event::WindowEvent {
window_id: SuperWindowId(WindowId(window)),
event: Moved(x, y),
});
0
},
winapi::WM_CHAR => {
use std::mem;
use events::WindowEvent::ReceivedCharacter;
let chr: char = mem::transmute(wparam as u32);
send_event(Event::WindowEvent {
window_id: SuperWindowId(WindowId(window)),
event: ReceivedCharacter(chr),
});
0
},
// Prevents default windows menu hotkeys playing unwanted
// "ding" sounds. Alternatively could check for WM_SYSCOMMAND
// with wparam being SC_KEYMENU, but this may prevent some
// other unwanted default hotkeys as well.
winapi::WM_SYSCHAR => {
0
}
winapi::WM_MOUSEMOVE => {
use events::WindowEvent::{MouseEntered, MouseMoved};
let mouse_outside_window = CONTEXT_STASH.with(|context_stash| {
let mut context_stash = context_stash.borrow_mut();
if let Some(context_stash) = context_stash.as_mut() {
if let Some(w) = context_stash.windows.get_mut(&window) {
let mut w = w.lock().unwrap();
if !w.mouse_in_window {
w.mouse_in_window = true;
return true;
}
}
}
false
});
if mouse_outside_window {
send_event(Event::WindowEvent {
window_id: SuperWindowId(WindowId(window)),
event: MouseEntered { device_id: DEVICE_ID },
});
// Calling TrackMouseEvent in order to receive mouse leave events.
user32::TrackMouseEvent(&mut winapi::TRACKMOUSEEVENT {
cbSize: mem::size_of::<winapi::TRACKMOUSEEVENT>() as winapi::DWORD,
dwFlags: winapi::TME_LEAVE,
hwndTrack: window,
dwHoverTime: winapi::HOVER_DEFAULT,
});
}
let x = winapi::GET_X_LPARAM(lparam) as f64;
let y = winapi::GET_Y_LPARAM(lparam) as f64;
send_event(Event::WindowEvent {
window_id: SuperWindowId(WindowId(window)),
event: MouseMoved { device_id: DEVICE_ID, position: (x, y) },
});
0
},
winapi::WM_MOUSELEAVE => {
use events::WindowEvent::MouseLeft;
let mouse_in_window = CONTEXT_STASH.with(|context_stash| {
let mut context_stash = context_stash.borrow_mut();
if let Some(context_stash) = context_stash.as_mut() {
if let Some(w) = context_stash.windows.get_mut(&window) {
let mut w = w.lock().unwrap();
if w.mouse_in_window {
w.mouse_in_window = false;
return true;
}
}
}
false
});
if mouse_in_window {
send_event(Event::WindowEvent {
window_id: SuperWindowId(WindowId(window)),
event: MouseLeft { device_id: DEVICE_ID }
});
}
0
},
winapi::WM_MOUSEWHEEL => {
use events::WindowEvent::MouseWheel;
use events::MouseScrollDelta::LineDelta;
use events::TouchPhase;
let value = (wparam >> 16) as i16;
let value = value as i32;
let value = value as f32 / winapi::WHEEL_DELTA as f32;
send_event(Event::WindowEvent {
window_id: SuperWindowId(WindowId(window)),
event: MouseWheel { device_id: DEVICE_ID, delta: LineDelta(0.0, value), phase: TouchPhase::Moved },
});
0
},
winapi::WM_KEYDOWN | winapi::WM_SYSKEYDOWN => {
use events::ElementState::Pressed;
if msg == winapi::WM_SYSKEYDOWN && wparam as i32 == winapi::VK_F4 {
user32::DefWindowProcW(window, msg, wparam, lparam)
} else {
let (scancode, vkey) = event::vkeycode_to_element(wparam, lparam);
send_event(Event::WindowEvent {
window_id: SuperWindowId(WindowId(window)),
event: WindowEvent::KeyboardInput {
device_id: DEVICE_ID,
input: KeyboardInput {
state: Pressed,
scancode: scancode,
virtual_keycode: vkey,
modifiers: event::get_key_mods(),
}
}
});
0
}
},
winapi::WM_KEYUP | winapi::WM_SYSKEYUP => {
use events::ElementState::Released;
let (scancode, vkey) = event::vkeycode_to_element(wparam, lparam);
send_event(Event::WindowEvent {
window_id: SuperWindowId(WindowId(window)),
event: WindowEvent::KeyboardInput {
device_id: DEVICE_ID,
input: KeyboardInput {
state: Released,
scancode: scancode,
virtual_keycode: vkey,
modifiers: event::get_key_mods(),
},
}
});
0
},
winapi::WM_LBUTTONDOWN => {
use events::WindowEvent::MouseInput;
use events::MouseButton::Left;
use events::ElementState::Pressed;
send_event(Event::WindowEvent {
window_id: SuperWindowId(WindowId(window)),
event: MouseInput { device_id: DEVICE_ID, state: Pressed, button: Left }
});
0
},
winapi::WM_LBUTTONUP => {
use events::WindowEvent::MouseInput;
use events::MouseButton::Left;
use events::ElementState::Released;
send_event(Event::WindowEvent {
window_id: SuperWindowId(WindowId(window)),
event: MouseInput { device_id: DEVICE_ID, state: Released, button: Left }
});
0
},
winapi::WM_RBUTTONDOWN => {
use events::WindowEvent::MouseInput;
use events::MouseButton::Right;
use events::ElementState::Pressed;
send_event(Event::WindowEvent {
window_id: SuperWindowId(WindowId(window)),
event: MouseInput { device_id: DEVICE_ID, state: Pressed, button: Right }
});
0
},
winapi::WM_RBUTTONUP => {
use events::WindowEvent::MouseInput;
use events::MouseButton::Right;
use events::ElementState::Released;
send_event(Event::WindowEvent {
window_id: SuperWindowId(WindowId(window)),
event: MouseInput { device_id: DEVICE_ID, state: Released, button: Right }
});
0
},
winapi::WM_MBUTTONDOWN => {
use events::WindowEvent::MouseInput;
use events::MouseButton::Middle;
use events::ElementState::Pressed;
send_event(Event::WindowEvent {
window_id: SuperWindowId(WindowId(window)),
event: MouseInput { device_id: DEVICE_ID, state: Pressed, button: Middle }
});
0
},
winapi::WM_MBUTTONUP => {
use events::WindowEvent::MouseInput;
use events::MouseButton::Middle;
use events::ElementState::Released;
send_event(Event::WindowEvent {
window_id: SuperWindowId(WindowId(window)),
event: MouseInput { device_id: DEVICE_ID, state: Released, button: Middle }
});
0
},
winapi::WM_XBUTTONDOWN => {
use events::WindowEvent::MouseInput;
use events::MouseButton::Other;
use events::ElementState::Pressed;
let xbutton = winapi::HIWORD(wparam as winapi::DWORD) as winapi::c_int; // waiting on PR for winapi to add GET_XBUTTON_WPARAM
send_event(Event::WindowEvent {
window_id: SuperWindowId(WindowId(window)),
event: MouseInput { device_id: DEVICE_ID, state: Pressed, button: Other(xbutton as u8) }
});
0
},
winapi::WM_XBUTTONUP => {
use events::WindowEvent::MouseInput;
use events::MouseButton::Other;
use events::ElementState::Released;
let xbutton = winapi::HIWORD(wparam as winapi::DWORD) as winapi::c_int;
send_event(Event::WindowEvent {
window_id: SuperWindowId(WindowId(window)),
event: MouseInput { device_id: DEVICE_ID, state: Released, button: Other(xbutton as u8) }
});
0
},
winapi::WM_INPUT => {
use events::DeviceEvent::Motion;
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 {
if data.mouse.usFlags & winapi::MOUSE_MOVE_RELATIVE == winapi::MOUSE_MOVE_RELATIVE {
let x = data.mouse.lLastX as f64;
let y = data.mouse.lLastY as f64;
if x != 0.0 {
send_event(Event::DeviceEvent {
device_id: DEVICE_ID,
event: Motion { axis: AxisId(0), value: x }
});
}
if y != 0.0 {
send_event(Event::DeviceEvent {
device_id: DEVICE_ID,
event: Motion { axis: AxisId(1), value: y }
});
}
}
0
} else {
user32::DefWindowProcW(window, msg, wparam, lparam)
}
},
winapi::WM_SETFOCUS => {
use events::WindowEvent::Focused;
send_event(Event::WindowEvent {
window_id: SuperWindowId(WindowId(window)),
event: Focused(true)
});
0
},
winapi::WM_KILLFOCUS => {
use events::WindowEvent::Focused;
send_event(Event::WindowEvent {
window_id: SuperWindowId(WindowId(window)),
event: Focused(false)
});
0
},
winapi::WM_SETCURSOR => {
let call_def_window_proc = CONTEXT_STASH.with(|context_stash| {
let cstash = context_stash.borrow();
let mut call_def_window_proc = false;
if let Some(cstash) = cstash.as_ref() {
if let Some(w_stash) = cstash.windows.get(&window) {
if let Ok(window_state) = w_stash.lock() {
if window_state.mouse_in_window {
match window_state.cursor_state {
CursorState::Normal => {
user32::SetCursor(user32::LoadCursorW(
ptr::null_mut(),
window_state.cursor));
},
CursorState::Grab | CursorState::Hide => {
user32::SetCursor(ptr::null_mut());
}
}
} else {
call_def_window_proc = true;
}
}
}
}
call_def_window_proc
});
if call_def_window_proc {
user32::DefWindowProcW(window, msg, wparam, lparam)
} else {
0
}
},
winapi::WM_DROPFILES => {
use events::WindowEvent::DroppedFile;
let hdrop = wparam as winapi::HDROP;
let mut pathbuf: [u16; winapi::MAX_PATH] = mem::uninitialized();
let num_drops = shell32::DragQueryFileW(hdrop, 0xFFFFFFFF, ptr::null_mut(), 0);
for i in 0..num_drops {
let nch = shell32::DragQueryFileW(hdrop, i, pathbuf.as_mut_ptr(),
winapi::MAX_PATH as u32) as usize;
if nch > 0 {
send_event(Event::WindowEvent {
window_id: SuperWindowId(WindowId(window)),
event: DroppedFile(OsString::from_wide(&pathbuf[0..nch]).into())
});
}
}
shell32::DragFinish(hdrop);
0
},
winapi::WM_GETMINMAXINFO => {
// Equivalent to the windows api [MINMAXINFO](https://msdn.microsoft.com/en-us/library/windows/desktop/ms632605%28v=vs.85%29.aspx)
// struct. Used because winapi-rs doesn't have this declared.
// TODO: replace with struct from winapi-rs
#[repr(C)]
#[allow(dead_code)]
struct MinMaxInfo {
reserved: winapi::POINT, // Do not use/change
max_size: winapi::POINT,
max_position: winapi::POINT,
min_track: winapi::POINT,
max_track: winapi::POINT
}
let mmi = lparam as *mut MinMaxInfo;
//(*mmi).max_position = winapi::POINT { x: -8, y: -8 }; // The upper left corner of the window if it were maximized on the primary monitor.
//(*mmi).max_size = winapi::POINT { x: .., y: .. }; // The dimensions of the primary monitor.
CONTEXT_STASH.with(|context_stash| {
if let Some(cstash) = context_stash.borrow().as_ref() {
if let Some(wstash) = cstash.windows.get(&window) {
let window_state = wstash.lock().unwrap();
match window_state.attributes.min_dimensions {
Some((width, height)) => {
(*mmi).min_track = winapi::POINT { x: width as i32, y: height as i32 };
},
None => { }
}
match window_state.attributes.max_dimensions {
Some((width, height)) => {
(*mmi).max_track = winapi::POINT { x: width as i32, y: height as i32 };
},
None => { }
}
}
}
});
0
},
_ => {
user32::DefWindowProcW(window, msg, wparam, lparam)
}
}
}

259
src/platform/windows/init.rs
View file

@ -1,259 +0,0 @@
use std::sync::{Arc, Mutex};
use std::io;
use std::ptr;
use std::mem;
use std::thread;
use super::callback;
use super::WindowState;
use super::Window;
use super::MonitorId;
use super::WindowWrapper;
use super::PlatformSpecificWindowBuilderAttributes;
use CreationError;
use CreationError::OsError;
use CursorState;
use WindowAttributes;
use std::ffi::{OsStr};
use std::os::windows::ffi::OsStrExt;
use std::sync::mpsc::channel;
use winapi;
use kernel32;
use dwmapi;
use user32;
pub fn new_window(window: &WindowAttributes, pl_attribs: &PlatformSpecificWindowBuilderAttributes) -> Result<Window, CreationError> {
let window = window.clone();
let attribs = pl_attribs.clone();
// initializing variables to be sent to the task
let title = OsStr::new(&window.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, &window, attribs) {
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>, window: &WindowAttributes, pl_attribs: PlatformSpecificWindowBuilderAttributes) -> Result<Window, CreationError> {
// registering the window class
let class_name = register_window_class();
// building a RECT object with coordinates
let mut rect = winapi::RECT {
left: 0, right: window.dimensions.unwrap_or((1024, 768)).0 as winapi::LONG,
top: 0, bottom: window.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 window.monitor.is_some() {
let monitor = window.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 window.monitor.is_some() || !window.decorations {
(winapi::WS_EX_APPWINDOW,
//winapi::WS_POPUP is incompatible with winapi::WS_CHILD
if pl_attribs.parent.is_some() {
winapi::WS_CLIPSIBLINGS | winapi::WS_CLIPCHILDREN
}
else {
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);
// creating the real window this time, by using the functions in `extra_functions`
let real_window = {
let (width, height) = if window.monitor.is_some() || window.dimensions.is_some() {
(Some(rect.right - rect.left), Some(rect.bottom - rect.top))
} else {
(None, None)
};
let (x, y) = if window.monitor.is_some() {
(Some(rect.left), Some(rect.top))
} else {
(None, None)
};
let mut style = if !window.visible {
style
} else {
style | winapi::WS_VISIBLE
};
if pl_attribs.parent.is_some() {
style |= winapi::WS_CHILD;
}
let handle = user32::CreateWindowExW(ex_style | winapi::WS_EX_ACCEPTFILES,
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),
pl_attribs.parent.unwrap_or(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)
};
// making the window transparent
if window.transparent {
let bb = winapi::DWM_BLURBEHIND {
dwFlags: 0x1, // FIXME: DWM_BB_ENABLE;
fEnable: 1,
hRgnBlur: ptr::null_mut(),
fTransitionOnMaximized: 0,
};
dwmapi::DwmEnableBlurBehindWindow(real_window.0, &bb);
}
// calling SetForegroundWindow if fullscreen
if window.monitor.is_some() {
user32::SetForegroundWindow(real_window.0);
}
// Creating a mutex to track the current window state
let window_state = Arc::new(Mutex::new(WindowState {
cursor: winapi::IDC_ARROW, // use arrow by default
cursor_state: CursorState::Normal,
attributes: window.clone()
}));
// 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(),
window_state: window_state.clone(),
mouse_in_window: false
};
(*context_stash.borrow_mut()) = Some(data);
});
rx
};
// building the struct
Ok(Window {
window: real_window,
events_receiver: events_receiver,
window_state: window_state,
})
}
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(())
}

387
src/platform/windows/mod.rs
View file

@ -1,21 +1,10 @@
#![cfg(target_os = "windows")] #![cfg(target_os = "windows")]
use std::mem; use winapi;
use std::ptr;
use std::ffi::OsStr;
use std::os::windows::ffi::OsStrExt;
use std::os::raw::c_int;
use std::sync::{
Arc,
Mutex
};
use std::sync::mpsc::Receiver;
use {CreationError, WindowEvent as Event, MouseCursor};
use CursorState;
use WindowAttributes; pub use self::events_loop::{EventsLoop, EventsLoopProxy};
pub use self::monitor::{MonitorId, get_available_monitors, get_primary_monitor};
gen_api_transition!(); pub use self::window::Window;
#[derive(Clone, Default)] #[derive(Clone, Default)]
pub struct PlatformSpecificWindowBuilderAttributes { pub struct PlatformSpecificWindowBuilderAttributes {
@ -25,361 +14,23 @@ pub struct PlatformSpecificWindowBuilderAttributes {
unsafe impl Send for PlatformSpecificWindowBuilderAttributes {} unsafe impl Send for PlatformSpecificWindowBuilderAttributes {}
unsafe impl Sync for PlatformSpecificWindowBuilderAttributes {} unsafe impl Sync for PlatformSpecificWindowBuilderAttributes {}
#[derive(Clone, Default)] // TODO: document what this means
pub struct PlatformSpecificHeadlessBuilderAttributes;
pub use self::monitor::{MonitorId, get_available_monitors, get_primary_monitor};
use winapi;
use user32;
use kernel32;
mod callback;
mod event;
mod init;
mod monitor;
lazy_static! {
static ref WAKEUP_MSG_ID: u32 = unsafe { user32::RegisterWindowMessageA("Glutin::EventID".as_ptr() as *const i8) };
}
/// Cursor
pub type Cursor = *const winapi::wchar_t; pub type Cursor = *const winapi::wchar_t;
/// Contains information about states and the window for the callback. // TODO: remove
#[derive(Clone)] pub type Window2 = Window;
pub struct WindowState {
pub cursor: Cursor,
pub cursor_state: CursorState,
pub attributes: WindowAttributes
}
/// The Win32 implementation of the main `Window` object. // Constant device ID, to be removed when this backend is updated to report real device IDs.
pub struct Window { #[derive(Debug, Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
/// Main handle for the window. pub struct DeviceId;
window: WindowWrapper, const DEVICE_ID: ::DeviceId = ::DeviceId(DeviceId);
/// Receiver for the events dispatched by the window callback. #[derive(Debug, Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
events_receiver: Receiver<Event>, pub struct WindowId(winapi::HWND);
unsafe impl Send for WindowId {}
unsafe impl Sync for WindowId {}
/// The current window state. mod event;
window_state: Arc<Mutex<WindowState>>, mod events_loop;
} mod monitor;
mod window;
unsafe impl Send for Window {}
unsafe impl Sync for Window {}
/// A simple wrapper that destroys the window when it is destroyed.
#[doc(hidden)]
pub struct WindowWrapper(winapi::HWND, winapi::HDC);
impl Drop for WindowWrapper {
#[inline]
fn drop(&mut self) {
unsafe {
user32::DestroyWindow(self.0);
}
}
}
#[derive(Clone)]
pub struct WindowProxy {
hwnd: winapi::HWND,
}
unsafe impl Send for WindowProxy {}
unsafe impl Sync for WindowProxy {}
impl WindowProxy {
#[inline]
pub fn wakeup_event_loop(&self) {
unsafe {
user32::PostMessageA(self.hwnd, *WAKEUP_MSG_ID, 0, 0);
}
}
}
impl Window {
/// See the docs in the crate root file.
pub fn new(window: &WindowAttributes, pl_attribs: &PlatformSpecificWindowBuilderAttributes)
-> Result<Window, CreationError>
{
init::new_window(window, pl_attribs)
}
/// 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);
}
}
#[inline]
pub fn show(&self) {
unsafe {
user32::ShowWindow(self.window.0, winapi::SW_SHOW);
}
}
#[inline]
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) {
unsafe {
user32::SetWindowPos(self.window.0, ptr::null_mut(), x as c_int, y as c_int,
0, 0, winapi::SWP_NOZORDER | winapi::SWP_NOSIZE);
user32::UpdateWindow(self.window.0);
}
}
/// See the docs in the crate root file.
#[inline]
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.
#[inline]
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) {
unsafe {
// Calculate the outer size based upon the specified inner size
let mut rect = winapi::RECT { top: 0, left: 0, bottom: y as winapi::LONG, right: x as winapi::LONG };
let dw_style = user32::GetWindowLongA(self.window.0, winapi::GWL_STYLE) as winapi::DWORD;
let b_menu = !user32::GetMenu(self.window.0).is_null() as winapi::BOOL;
let dw_style_ex = user32::GetWindowLongA(self.window.0, winapi::GWL_EXSTYLE) as winapi::DWORD;
user32::AdjustWindowRectEx(&mut rect, dw_style, b_menu, dw_style_ex);
let outer_x = (rect.right - rect.left).abs() as c_int;
let outer_y = (rect.top - rect.bottom).abs() as c_int;
user32::SetWindowPos(self.window.0, ptr::null_mut(), 0, 0, outer_x, outer_y,
winapi::SWP_NOZORDER | winapi::SWP_NOREPOSITION | winapi::SWP_NOMOVE);
user32::UpdateWindow(self.window.0);
}
}
#[inline]
pub fn create_window_proxy(&self) -> WindowProxy {
WindowProxy { hwnd: self.window.0 }
}
/// See the docs in the crate root file.
#[inline]
pub fn poll_events(&self) -> PollEventsIterator {
PollEventsIterator {
window: self,
}
}
/// See the docs in the crate root file.
#[inline]
pub fn wait_events(&self) -> WaitEventsIterator {
WaitEventsIterator {
window: self,
}
}
#[inline]
pub fn platform_display(&self) -> *mut ::libc::c_void {
// What should this return on win32?
// It could be GetDC(NULL), but that requires a ReleaseDC()
// to avoid leaking the DC.
ptr::null_mut()
}
#[inline]
pub fn platform_window(&self) -> *mut ::libc::c_void {
self.window.0 as *mut ::libc::c_void
}
#[inline]
pub fn set_window_resize_callback(&mut self, _: Option<fn(u32, u32)>) {
}
#[inline]
pub fn set_cursor(&self, _cursor: MouseCursor) {
let cursor_id = match _cursor {
MouseCursor::Arrow | MouseCursor::Default => winapi::IDC_ARROW,
MouseCursor::Hand => winapi::IDC_HAND,
MouseCursor::Crosshair => winapi::IDC_CROSS,
MouseCursor::Text | MouseCursor::VerticalText => winapi::IDC_IBEAM,
MouseCursor::NotAllowed | MouseCursor::NoDrop => winapi::IDC_NO,
MouseCursor::EResize => winapi::IDC_SIZEWE,
MouseCursor::NResize => winapi::IDC_SIZENS,
MouseCursor::WResize => winapi::IDC_SIZEWE,
MouseCursor::SResize => winapi::IDC_SIZENS,
MouseCursor::EwResize | MouseCursor::ColResize => winapi::IDC_SIZEWE,
MouseCursor::NsResize | MouseCursor::RowResize => winapi::IDC_SIZENS,
MouseCursor::Wait | MouseCursor::Progress => winapi::IDC_WAIT,
MouseCursor::Help => winapi::IDC_HELP,
_ => winapi::IDC_ARROW, // use arrow for the missing cases.
};
let mut cur = self.window_state.lock().unwrap();
cur.cursor = cursor_id;
}
pub fn set_cursor_state(&self, state: CursorState) -> Result<(), String> {
let mut current_state = self.window_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.cursor_state) {
(CursorState::Normal, CursorState::Normal) => Ok(()),
(CursorState::Hide, CursorState::Hide) => Ok(()),
(CursorState::Grab, CursorState::Grab) => Ok(()),
(CursorState::Hide, CursorState::Normal) => {
current_state.cursor_state = CursorState::Hide;
Ok(())
},
(CursorState::Normal, CursorState::Hide) => {
current_state.cursor_state = CursorState::Normal;
Ok(())
},
(CursorState::Grab, CursorState::Normal) | (CursorState::Grab, CursorState::Hide) => {
unsafe {
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.cursor_state = CursorState::Grab;
Ok(())
}
},
(CursorState::Normal, CursorState::Grab) => {
unsafe {
if user32::ClipCursor(ptr::null()) == 0 {
return Err(format!("ClipCursor failed"));
}
current_state.cursor_state = CursorState::Normal;
Ok(())
}
},
_ => unimplemented!(),
};
unsafe { user32::AttachThreadInput(foreground_thread_id, current_thread_id, 0) };
res
}
#[inline]
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(())
}
}
impl Drop for Window {
#[inline]
fn drop(&mut self) {
unsafe {
user32::PostMessageW(self.window.0, winapi::WM_DESTROY, 0, 0);
}
}
}
pub struct PollEventsIterator<'a> {
window: &'a Window,
}
impl<'a> Iterator for PollEventsIterator<'a> {
type Item = Event;
#[inline]
fn next(&mut self) -> Option<Event> {
self.window.events_receiver.try_recv().ok()
}
}
pub struct WaitEventsIterator<'a> {
window: &'a Window,
}
impl<'a> Iterator for WaitEventsIterator<'a> {
type Item = Event;
#[inline]
fn next(&mut self) -> Option<Event> {
self.window.events_receiver.recv().ok()
}
}

494
src/platform/windows/window.rs Normal file
View file

@ -0,0 +1,494 @@
#![cfg(target_os = "windows")]
use std::ffi::OsStr;
use std::io;
use std::mem;
use std::os::raw;
use std::os::windows::ffi::OsStrExt;
use std::ptr;
use std::sync::Arc;
use std::sync::Mutex;
use std::sync::mpsc::channel;
use platform::platform::events_loop;
use platform::platform::EventsLoop;
use platform::platform::PlatformSpecificWindowBuilderAttributes;
use platform::platform::MonitorId;
use platform::platform::WindowId;
use CreationError;
use CursorState;
use MouseCursor;
use WindowAttributes;
use dwmapi;
use kernel32;
use user32;
use winapi;
/// The Win32 implementation of the main `Window` object.
pub struct Window {
/// Main handle for the window.
window: WindowWrapper,
/// The current window state.
window_state: Arc<Mutex<events_loop::WindowState>>,
}
unsafe impl Send for Window {}
unsafe impl Sync for Window {}
impl Window {
pub fn new(events_loop: &EventsLoop, w_attr: &WindowAttributes,
pl_attr: &PlatformSpecificWindowBuilderAttributes) -> Result<Window, CreationError>
{
let mut w_attr = Some(w_attr.clone());
let mut pl_attr = Some(pl_attr.clone());
let (tx, rx) = channel();
events_loop.execute_in_thread(move |inserter| {
// We dispatch an `init` function because of code style.
let win = unsafe { init(w_attr.take().unwrap(), pl_attr.take().unwrap(), inserter) };
let _ = tx.send(win);
});
rx.recv().unwrap()
}
pub fn set_title(&self, text: &str) {
unsafe {
let text = OsStr::new(text).encode_wide().chain(Some(0).into_iter())
.collect::<Vec<_>>();
user32::SetWindowTextW(self.window.0, text.as_ptr() as winapi::LPCWSTR);
}
}
#[inline]
pub fn show(&self) {
unsafe {
user32::ShowWindow(self.window.0, winapi::SW_SHOW);
}
}
#[inline]
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) {
unsafe {
user32::SetWindowPos(self.window.0, ptr::null_mut(), x as raw::c_int, y as raw::c_int,
0, 0, winapi::SWP_NOZORDER | winapi::SWP_NOSIZE);
user32::UpdateWindow(self.window.0);
}
}
/// See the docs in the crate root file.
#[inline]
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.
#[inline]
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) {
unsafe {
// Calculate the outer size based upon the specified inner size
let mut rect = winapi::RECT { top: 0, left: 0, bottom: y as winapi::LONG, right: x as winapi::LONG };
let dw_style = user32::GetWindowLongA(self.window.0, winapi::GWL_STYLE) as winapi::DWORD;
let b_menu = !user32::GetMenu(self.window.0).is_null() as winapi::BOOL;
let dw_style_ex = user32::GetWindowLongA(self.window.0, winapi::GWL_EXSTYLE) as winapi::DWORD;
user32::AdjustWindowRectEx(&mut rect, dw_style, b_menu, dw_style_ex);
let outer_x = (rect.right - rect.left).abs() as raw::c_int;
let outer_y = (rect.top - rect.bottom).abs() as raw::c_int;
user32::SetWindowPos(self.window.0, ptr::null_mut(), 0, 0, outer_x, outer_y,
winapi::SWP_NOZORDER | winapi::SWP_NOREPOSITION | winapi::SWP_NOMOVE);
user32::UpdateWindow(self.window.0);
}
}
// TODO: remove
pub fn platform_display(&self) -> *mut ::libc::c_void {
panic!() // Deprecated function ; we don't care anymore
}
// TODO: remove
pub fn platform_window(&self) -> *mut ::libc::c_void {
panic!() // Deprecated function ; we don't care anymore
}
/// Returns the `hwnd` of this window.
#[inline]
pub fn hwnd(&self) -> winapi::HWND {
self.window.0
}
#[inline]
pub fn set_cursor(&self, cursor: MouseCursor) {
let cursor_id = match cursor {
MouseCursor::Arrow | MouseCursor::Default => winapi::IDC_ARROW,
MouseCursor::Hand => winapi::IDC_HAND,
MouseCursor::Crosshair => winapi::IDC_CROSS,
MouseCursor::Text | MouseCursor::VerticalText => winapi::IDC_IBEAM,
MouseCursor::NotAllowed | MouseCursor::NoDrop => winapi::IDC_NO,
MouseCursor::EResize => winapi::IDC_SIZEWE,
MouseCursor::NResize => winapi::IDC_SIZENS,
MouseCursor::WResize => winapi::IDC_SIZEWE,
MouseCursor::SResize => winapi::IDC_SIZENS,
MouseCursor::EwResize | MouseCursor::ColResize => winapi::IDC_SIZEWE,
MouseCursor::NsResize | MouseCursor::RowResize => winapi::IDC_SIZENS,
MouseCursor::Wait | MouseCursor::Progress => winapi::IDC_WAIT,
MouseCursor::Help => winapi::IDC_HELP,
_ => winapi::IDC_ARROW, // use arrow for the missing cases.
};
let mut cur = self.window_state.lock().unwrap();
cur.cursor = cursor_id;
}
// TODO: it should be possible to rework this function by using the `execute_in_thread` method
// of the events loop.
pub fn set_cursor_state(&self, state: CursorState) -> Result<(), String> {
let mut current_state = self.window_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.cursor_state) {
(CursorState::Normal, CursorState::Normal) => Ok(()),
(CursorState::Hide, CursorState::Hide) => Ok(()),
(CursorState::Grab, CursorState::Grab) => Ok(()),
(CursorState::Hide, CursorState::Normal) => {
current_state.cursor_state = CursorState::Hide;
Ok(())
},
(CursorState::Normal, CursorState::Hide) => {
current_state.cursor_state = CursorState::Normal;
Ok(())
},
(CursorState::Grab, CursorState::Normal) | (CursorState::Grab, CursorState::Hide) => {
unsafe {
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.cursor_state = CursorState::Grab;
Ok(())
}
},
(CursorState::Normal, CursorState::Grab) => {
unsafe {
if user32::ClipCursor(ptr::null()) == 0 {
return Err(format!("ClipCursor failed"));
}
current_state.cursor_state = CursorState::Normal;
Ok(())
}
},
_ => unimplemented!(),
};
unsafe { user32::AttachThreadInput(foreground_thread_id, current_thread_id, 0) };
res
}
#[inline]
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(())
}
#[inline]
pub fn id(&self) -> WindowId {
WindowId(self.window.0)
}
}
impl Drop for Window {
#[inline]
fn drop(&mut self) {
unsafe {
user32::PostMessageW(self.window.0, winapi::WM_DESTROY, 0, 0);
}
}
}
/// A simple wrapper that destroys the window when it is destroyed.
#[doc(hidden)]
pub struct WindowWrapper(winapi::HWND, winapi::HDC);
impl Drop for WindowWrapper {
#[inline]
fn drop(&mut self) {
unsafe {
user32::DestroyWindow(self.0);
}
}
}
unsafe fn init(window: WindowAttributes, pl_attribs: PlatformSpecificWindowBuilderAttributes,
inserter: events_loop::Inserter) -> Result<Window, CreationError> {
let title = OsStr::new(&window.title).encode_wide().chain(Some(0).into_iter())
.collect::<Vec<_>>();
// registering the window class
let class_name = register_window_class();
// building a RECT object with coordinates
let mut rect = winapi::RECT {
left: 0, right: window.dimensions.unwrap_or((1024, 768)).0 as winapi::LONG,
top: 0, bottom: window.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 window.monitor.is_some() {
let monitor = window.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 window.monitor.is_some() || !window.decorations {
(winapi::WS_EX_APPWINDOW,
//winapi::WS_POPUP is incompatible with winapi::WS_CHILD
if pl_attribs.parent.is_some() {
winapi::WS_CLIPSIBLINGS | winapi::WS_CLIPCHILDREN
}
else {
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);
// creating the real window this time, by using the functions in `extra_functions`
let real_window = {
let (width, height) = if window.monitor.is_some() || window.dimensions.is_some() {
(Some(rect.right - rect.left), Some(rect.bottom - rect.top))
} else {
(None, None)
};
let (x, y) = if window.monitor.is_some() {
(Some(rect.left), Some(rect.top))
} else {
(None, None)
};
let mut style = if !window.visible {
style
} else {
style | winapi::WS_VISIBLE
};
if pl_attribs.parent.is_some() {
style |= winapi::WS_CHILD;
}
let handle = user32::CreateWindowExW(ex_style | winapi::WS_EX_ACCEPTFILES,
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),
pl_attribs.parent.unwrap_or(ptr::null_mut()),
ptr::null_mut(), kernel32::GetModuleHandleW(ptr::null()),
ptr::null_mut());
if handle.is_null() {
return Err(CreationError::OsError(format!("CreateWindowEx function failed: {}",
format!("{}", io::Error::last_os_error()))));
}
let hdc = user32::GetDC(handle);
if hdc.is_null() {
return Err(CreationError::OsError(format!("GetDC function failed: {}",
format!("{}", io::Error::last_os_error()))));
}
WindowWrapper(handle, hdc)
};
// Set up raw mouse input
{
let mut rid: winapi::RAWINPUTDEVICE = mem::uninitialized();
rid.usUsagePage = winapi::HID_USAGE_PAGE_GENERIC;
rid.usUsage = winapi::HID_USAGE_GENERIC_MOUSE;
rid.dwFlags = 0;
rid.hwndTarget = real_window.0;
user32::RegisterRawInputDevices(&rid, 1, mem::size_of::<winapi::RAWINPUTDEVICE>() as u32);
}
// Creating a mutex to track the current window state
let window_state = Arc::new(Mutex::new(events_loop::WindowState {
cursor: winapi::IDC_ARROW, // use arrow by default
cursor_state: CursorState::Normal,
attributes: window.clone(),
mouse_in_window: false,
}));
inserter.insert(real_window.0, window_state.clone());
// making the window transparent
if window.transparent {
let bb = winapi::DWM_BLURBEHIND {
dwFlags: 0x1, // FIXME: DWM_BB_ENABLE;
fEnable: 1,
hRgnBlur: ptr::null_mut(),
fTransitionOnMaximized: 0,
};
dwmapi::DwmEnableBlurBehindWindow(real_window.0, &bb);
}
// calling SetForegroundWindow if fullscreen
if window.monitor.is_some() {
user32::SetForegroundWindow(real_window.0);
}
// Building the struct.
Ok(Window {
window: real_window,
window_state: window_state,
})
}
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(events_loop::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(CreationError::OsError(format!("ChangeDisplaySettings failed: {}", result)));
}
Ok(())
}

16
src/window.rs
View file

@ -320,6 +320,14 @@ impl Iterator for AvailableMonitorsIter {
} }
/// Returns the list of all available monitors. /// Returns the list of all available monitors.
///
/// Usage will result in display backend initialisation, this can be controlled on linux
/// using an environment variable `WINIT_UNIX_BACKEND`.
/// > Legal values are `x11` and `wayland`. If this variable is set only the named backend
/// > will be tried by winit. If it is not set, winit will try to connect to a wayland connection,
/// > and if it fails will fallback on x11.
/// >
/// > If this variable is set with any other value, winit will panic.
#[inline] #[inline]
pub fn get_available_monitors() -> AvailableMonitorsIter { pub fn get_available_monitors() -> AvailableMonitorsIter {
let data = platform::get_available_monitors(); let data = platform::get_available_monitors();
@ -327,6 +335,14 @@ pub fn get_available_monitors() -> AvailableMonitorsIter {
} }
/// Returns the primary monitor of the system. /// Returns the primary monitor of the system.
///
/// Usage will result in display backend initialisation, this can be controlled on linux
/// using an environment variable `WINIT_UNIX_BACKEND`.
/// > Legal values are `x11` and `wayland`. If this variable is set only the named backend
/// > will be tried by winit. If it is not set, winit will try to connect to a wayland connection,
/// > and if it fails will fallback on x11.
/// >
/// > If this variable is set with any other value, winit will panic.
#[inline] #[inline]
pub fn get_primary_monitor() -> MonitorId { pub fn get_primary_monitor() -> MonitorId {
MonitorId(platform::get_primary_monitor()) MonitorId(platform::get_primary_monitor())