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Rework the X implementation to use only one X connection

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This commit is contained in:
Pierre Krieger 2015-05-17 11:19:06 +02:00
parent 7fe85cbc49
commit 3376332a85
6 changed files with 938 additions and 915 deletions
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2
Cargo.toml
View file

@ -21,7 +21,7 @@ libc = "0.1"
shared_library = "0.1.0" shared_library = "0.1.0"
[build-dependencies] [build-dependencies]
gl_generator = "0.0.25" gl_generator = "0.0.26"
khronos_api = "0.0.5" khronos_api = "0.0.5"
[dev-dependencies] [dev-dependencies]

860
src/api/x11/mod.rs
View file

@ -1,860 +1,12 @@
#![cfg(all(target_os = "linux", feature = "window"))] #![cfg(all(target_os = "linux", feature = "window"))]
use {Event, BuilderAttribs, MouseCursor};
use CreationError;
use CreationError::OsError;
use libc;
use std::{mem, ptr};
use std::cell::Cell;
use std::ffi::CString;
use std::sync::atomic::AtomicBool;
use std::collections::VecDeque;
use std::sync::{Arc, Mutex, Once, ONCE_INIT};
use Api;
use CursorState;
use GlContext;
use GlRequest;
use PixelFormat;
use api::dlopen;
use api::glx::Context as GlxContext;
use api::egl::Context as EglContext;
use platform::MonitorID as PlatformMonitorID;
pub use self::monitor::{MonitorID, get_available_monitors, get_primary_monitor}; pub use self::monitor::{MonitorID, get_available_monitors, get_primary_monitor};
pub use self::window::{Window, XWindow, PollEventsIterator, WaitEventsIterator, Context, WindowProxy};
pub use self::xdisplay::XConnection;
pub mod ffi;
mod events; mod events;
mod monitor; mod monitor;
pub mod ffi; mod window;
mod xdisplay;
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(xlib: &ffi::Xlib) {
THREAD_INIT.call_once(|| {
unsafe {
(xlib.XInitThreads)();
(xlib.XSetErrorHandler)(Some(x_error_callback));
}
});
}
// TODO: remove me
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())
}
pub struct XWindow {
xlib: ffi::Xlib,
xf86vmode: ffi::Xf86vmode,
xcursor: ffi::Xcursor,
display: *mut ffi::Display,
window: ffi::Window,
pub context: Context,
is_fullscreen: bool,
screen_id: libc::c_int,
xf86_desk_mode: *mut ffi::XF86VidModeModeInfo,
ic: ffi::XIC,
im: ffi::XIM,
}
pub enum Context {
Glx(GlxContext),
Egl(EglContext),
None,
}
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
self.context = Context::None;
if self.is_fullscreen {
(self.xf86vmode.XF86VidModeSwitchToMode)(self.display, self.screen_id, self.xf86_desk_mode);
(self.xf86vmode.XF86VidModeSetViewPort)(self.display, self.screen_id, 0, 0);
}
(self.xlib.XDestroyIC)(self.ic);
(self.xlib.XCloseIM)(self.im);
(self.xlib.XDestroyWindow)(self.display, self.window);
(self.xlib.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 {
(self.x.xlib.XSendEvent)(self.x.display, self.x.window, 0, 0, mem::transmute(&mut xev));
(self.x.xlib.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 { (self.window.x.xlib.XCheckMaskEvent)(self.window.x.display, -1, &mut xev) };
if res == 0 {
let res = unsafe { (self.window.x.xlib.XCheckTypedEvent)(self.window.x.display, ffi::ClientMessage, &mut xev) };
if res == 0 {
return None;
}
}
match xev.get_type() {
ffi::KeymapNotify => {
unsafe { (self.window.x.xlib.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(&mut xev) };
if event.type_ == ffi::KeyPress {
let raw_ev: *mut ffi::XKeyEvent = event;
unsafe { (self.window.x.xlib.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 = (self.window.x.xlib.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 {
(self.window.x.xlib.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(0.0, 1.0));
None
}
ffi::Button5 => {
self.window.pending_events.lock().unwrap().push_back(MouseWheel(0.0, -1.0));
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 { (self.window.x.xlib.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 {
pub 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> {
let xlib = try!(ffi::Xlib::open().map_err(|_| CreationError::NotSupported));
let xcursor = try!(ffi::Xcursor::open().map_err(|_| CreationError::NotSupported));
let xf86vmode = try!(ffi::Xf86vmode::open().map_err(|_| CreationError::NotSupported));
let glx = {
let mut libglx = unsafe { dlopen::dlopen(b"libGL.so.1\0".as_ptr() as *const _, dlopen::RTLD_NOW) };
if libglx.is_null() {
libglx = unsafe { dlopen::dlopen(b"libGL.so\0".as_ptr() as *const _, dlopen::RTLD_NOW) };
}
if libglx.is_null() {
return Err(CreationError::NotSupported);
}
ffi::glx::Glx::load_with(|sym| {
let sym = CString::new(sym).unwrap();
unsafe { dlopen::dlsym(libglx, sym.as_ptr()) }
})
};
ensure_thread_init(&xlib);
let dimensions = builder.dimensions.unwrap_or((800, 600));
// calling XOpenDisplay
let display = unsafe {
let display = (xlib.XOpenDisplay)(ptr::null());
if display.is_null() {
return Err(OsError(format!("XOpenDisplay failed")));
}
display
};
let screen_id = match builder.monitor {
Some(PlatformMonitorID::X(MonitorID(monitor))) => monitor as i32,
_ => unsafe { (xlib.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 = glx.ChooseFBConfig(display as *mut _, (xlib.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
(xlib.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 (xf86vmode.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 visual_infos: ffi::glx::types::XVisualInfo = unsafe {
let vi = 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 _);
(xlib.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 { glx.GetFBConfigAttrib(display as *mut _, fb_config, attrib, &mut value); }
value
};
PixelFormat {
hardware_accelerated: true,
color_bits: get_attrib(ffi::glx::RED_SIZE as libc::c_int) as u8 +
get_attrib(ffi::glx::GREEN_SIZE as libc::c_int) as u8 +
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 { (xlib.XDefaultRootWindow)(display) };
// creating the color map
let cmap = unsafe {
let cmap = (xlib.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 {
(xf86vmode.XF86VidModeSwitchToMode)(display, screen_id, *modes.offset(best_mode as isize));
(xf86vmode.XF86VidModeSetViewPort)(display, screen_id, 0, 0);
set_win_attr.override_redirect = 1;
}
}
// finally creating the window
let window = unsafe {
let win = (xlib.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 {
(xlib.XMapRaised)(display, window);
(xlib.XFlush)(display);
}
}
// creating window, step 2
let wm_delete_window = unsafe {
let mut wm_delete_window = with_c_str("WM_DELETE_WINDOW", |delete_window|
(xlib.XInternAtom)(display, delete_window, 0)
);
(xlib.XSetWMProtocols)(display, window, &mut wm_delete_window, 1);
with_c_str(&*builder.title, |title| {;
(xlib.XStoreName)(display, window, title);
});
(xlib.XFlush)(display);
wm_delete_window
};
// creating IM
let im = unsafe {
let _lock = GLOBAL_XOPENIM_LOCK.lock().unwrap();
let im = (xlib.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|
(xlib.XCreateIC)(
im, input_style,
ffi::XIMPreeditNothing | ffi::XIMStatusNothing, client_window,
window, ptr::null::<()>()
)
)
);
if ic.is_null() {
return Err(OsError(format!("XCreateIC failed")));
}
(xlib.XSetICFocus)(ic);
ic
};
// Attempt to make keyboard input repeat detectable
unsafe {
let mut supported_ptr = ffi::False;
(xlib.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 = (xlib.XAllocClassHint)();
(*hint).res_name = c_name as *mut i8;
(*hint).res_class = c_name as *mut i8;
(xlib.XSetClassHint)(display, window, hint);
(xlib.XFree)(hint as *mut libc::c_void);
});
}
let is_fullscreen = builder.monitor.is_some();
// creating the context
let context = match builder.gl_version {
GlRequest::Latest | GlRequest::Specific(Api::OpenGl, _) | GlRequest::GlThenGles { .. } => {
Context::Glx(try!(GlxContext::new(glx, builder, display, window,
fb_config, visual_infos)))
},
GlRequest::Specific(Api::OpenGlEs, _) => {
let libegl = unsafe { dlopen::dlopen(b"libEGL.so\0".as_ptr() as *const _, dlopen::RTLD_NOW) };
if libegl.is_null() {
return Err(CreationError::NotSupported);
}
let egl = ::api::egl::ffi::egl::Egl::load_with(|sym| {
let sym = CString::new(sym).unwrap();
unsafe { dlopen::dlsym(libegl, sym.as_ptr()) }
});
Context::Egl(try!(EglContext::new(egl, builder, Some(display as *const _), unsafe { mem::transmute(window) })))
},
GlRequest::Specific(_, _) => {
return Err(CreationError::NotSupported);
},
};
// creating the window object
let window = Window {
x: Arc::new(XWindow {
xlib: xlib,
xcursor: xcursor,
xf86vmode: xf86vmode,
display: display,
window: window,
im: im,
ic: ic,
context: context,
screen_id: screen_id,
is_fullscreen: is_fullscreen,
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 {
(self.x.xlib.XStoreName)(self.x.display, self.x.window, title);
(self.x.xlib.XFlush)(self.x.display);
})
}
pub fn show(&self) {
unsafe {
(self.x.xlib.XMapRaised)(self.x.display, self.x.window);
(self.x.xlib.XFlush)(self.x.display);
}
}
pub fn hide(&self) {
unsafe {
(self.x.xlib.XUnmapWindow)(self.x.display, self.x.window);
(self.x.xlib.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 (self.x.xlib.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 { (self.x.xlib.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 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 {
self.x.window as *mut libc::c_void
}
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 = (self.x.xcursor.XcursorLibraryLoadCursor)(self.x.display, c_string.as_ptr());
(self.x.xlib.XDefineCursor)(self.x.display, self.x.window, xcursor);
(self.x.xlib.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 {
(self.x.xlib.XUngrabPointer)(self.x.display, ffi::CurrentTime);
*cursor_state = CursorState::Normal;
Ok(())
}
},
(CursorState::Grab, CursorState::Normal) => {
unsafe {
*cursor_state = CursorState::Grab;
match (self.x.xlib.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 {
(self.x.xlib.XWarpPointer)(self.x.display, 0, self.x.window, 0, 0, 0, 0, x, y);
}
Ok(())
}
}
impl GlContext for Window {
unsafe fn make_current(&self) {
match self.x.context {
Context::Glx(ref ctxt) => ctxt.make_current(),
Context::Egl(ref ctxt) => ctxt.make_current(),
Context::None => {}
}
}
fn is_current(&self) -> bool {
match self.x.context {
Context::Glx(ref ctxt) => ctxt.is_current(),
Context::Egl(ref ctxt) => ctxt.is_current(),
Context::None => panic!()
}
}
fn get_proc_address(&self, addr: &str) -> *const libc::c_void {
match self.x.context {
Context::Glx(ref ctxt) => ctxt.get_proc_address(addr),
Context::Egl(ref ctxt) => ctxt.get_proc_address(addr),
Context::None => ptr::null()
}
}
fn swap_buffers(&self) {
match self.x.context {
Context::Glx(ref ctxt) => ctxt.swap_buffers(),
Context::Egl(ref ctxt) => ctxt.swap_buffers(),
Context::None => {}
}
}
fn get_api(&self) -> Api {
match self.x.context {
Context::Glx(ref ctxt) => ctxt.get_api(),
Context::Egl(ref ctxt) => ctxt.get_api(),
Context::None => panic!()
}
}
fn get_pixel_format(&self) -> PixelFormat {
self.pixel_format.clone()
}
}

66
src/api/x11/monitor.rs
View file

@ -1,72 +1,38 @@
use std::ptr;
use std::collections::VecDeque; use std::collections::VecDeque;
use super::ffi; use std::sync::Arc;
use super::ensure_thread_init;
use super::XConnection;
use native_monitor::NativeMonitorId; use native_monitor::NativeMonitorId;
pub struct MonitorID(pub u32); pub struct MonitorID(pub Arc<XConnection>, pub u32);
pub fn get_available_monitors() -> VecDeque<MonitorID> { pub fn get_available_monitors(x: &Arc<XConnection>) -> VecDeque<MonitorID> {
let xlib = ffi::Xlib::open().unwrap(); // FIXME: gracious handling let nb_monitors = unsafe { (x.xlib.XScreenCount)(x.display) };
ensure_thread_init(&xlib);
let nb_monitors = unsafe {
let display = (xlib.XOpenDisplay)(ptr::null());
if display.is_null() {
panic!("get_available_monitors failed");
}
let nb_monitors = (xlib.XScreenCount)(display);
(xlib.XCloseDisplay)(display);
nb_monitors
};
let mut monitors = VecDeque::new(); let mut monitors = VecDeque::new();
monitors.extend((0..nb_monitors).map(|i| MonitorID(i as u32))); monitors.extend((0 .. nb_monitors).map(|i| MonitorID(x.clone(), i as u32)));
monitors monitors
} }
pub fn get_primary_monitor() -> MonitorID { pub fn get_primary_monitor(x: &Arc<XConnection>) -> MonitorID {
let xlib = ffi::Xlib::open().unwrap(); // FIXME: gracious handling let primary_monitor = unsafe { (x.xlib.XDefaultScreen)(x.display) };
MonitorID(x.clone(), primary_monitor as u32)
ensure_thread_init(&xlib);
let primary_monitor = unsafe {
let display = (xlib.XOpenDisplay)(ptr::null());
if display.is_null() {
panic!("get_available_monitors failed");
}
let primary_monitor = (xlib.XDefaultScreen)(display);
(xlib.XCloseDisplay)(display);
primary_monitor
};
MonitorID(primary_monitor as u32)
} }
impl MonitorID { impl MonitorID {
pub fn get_name(&self) -> Option<String> { pub fn get_name(&self) -> Option<String> {
let MonitorID(screen_num) = *self; let MonitorID(_, screen_num) = *self;
Some(format!("Monitor #{}", screen_num)) Some(format!("Monitor #{}", screen_num))
} }
pub fn get_native_identifier(&self) -> NativeMonitorId { pub fn get_native_identifier(&self) -> NativeMonitorId {
let MonitorID(screen_num) = *self; NativeMonitorId::Numeric(self.1)
NativeMonitorId::Numeric(screen_num)
} }
pub fn get_dimensions(&self) -> (u32, u32) { pub fn get_dimensions(&self) -> (u32, u32) {
let xlib = ffi::Xlib::open().unwrap(); // FIXME: gracious handling let screen = unsafe { (self.0.xlib.XScreenOfDisplay)(self.0.display, self.1 as i32) };
let width = unsafe { (self.0.xlib.XWidthOfScreen)(screen) };
let dimensions = unsafe { let height = unsafe { (self.0.xlib.XHeightOfScreen)(screen) };
let display = (xlib.XOpenDisplay)(ptr::null()); (width as u32, height as u32)
let MonitorID(screen_num) = *self;
let screen = (xlib.XScreenOfDisplay)(display, screen_num as i32);
let width = (xlib.XWidthOfScreen)(screen);
let height = (xlib.XHeightOfScreen)(screen);
(xlib.XCloseDisplay)(display);
(width as u32, height as u32)
};
dimensions
} }
} }

803
src/api/x11/window.rs Normal file
View file

@ -0,0 +1,803 @@
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 std::sync::{Arc, Mutex};
use Api;
use CursorState;
use GlContext;
use GlRequest;
use PixelFormat;
use api::glx::Context as GlxContext;
use api::egl::Context as EglContext;
use platform::MonitorID as PlatformMonitorID;
use super::{events, ffi};
use super::{MonitorID, XConnection};
// 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(());
}
// TODO: remove me
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())
}
pub struct XWindow {
display: Arc<XConnection>,
window: ffi::Window,
pub context: Context,
is_fullscreen: bool,
screen_id: libc::c_int,
xf86_desk_mode: *mut ffi::XF86VidModeModeInfo,
ic: ffi::XIC,
im: ffi::XIM,
}
pub enum Context {
Glx(GlxContext),
Egl(EglContext),
None,
}
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
self.context = Context::None;
if self.is_fullscreen {
(self.display.xf86vmode.XF86VidModeSwitchToMode)(self.display.display, self.screen_id, self.xf86_desk_mode);
(self.display.xf86vmode.XF86VidModeSetViewPort)(self.display.display, self.screen_id, 0, 0);
}
(self.display.xlib.XDestroyIC)(self.ic);
(self.display.xlib.XCloseIM)(self.im);
(self.display.xlib.XDestroyWindow)(self.display.display, self.window);
}
}
}
#[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.display,
data: unsafe { mem::zeroed() },
};
unsafe {
(self.x.display.xlib.XSendEvent)(self.x.display.display, self.x.window, 0, 0, mem::transmute(&mut xev));
(self.x.display.xlib.XFlush)(self.x.display.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 { (self.window.x.display.xlib.XCheckMaskEvent)(self.window.x.display.display, -1, &mut xev) };
if res == 0 {
let res = unsafe { (self.window.x.display.xlib.XCheckTypedEvent)(self.window.x.display.display, ffi::ClientMessage, &mut xev) };
if res == 0 {
return None;
}
}
match xev.get_type() {
ffi::KeymapNotify => {
unsafe { (self.window.x.display.xlib.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(&mut xev) };
if event.type_ == ffi::KeyPress {
let raw_ev: *mut ffi::XKeyEvent = event;
unsafe { (self.window.x.display.xlib.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 = (self.window.x.display.xlib.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 {
(self.window.x.display.xlib.XKeycodeToKeysym)(self.window.x.display.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(0.0, 1.0));
None
}
ffi::Button5 => {
self.window.pending_events.lock().unwrap().push_back(MouseWheel(0.0, -1.0));
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 { (self.window.x.display.xlib.XPeekEvent)(self.window.x.display.display, &mut xev) };
// calling poll_events()
if let Some(ev) = self.window.poll_events().next() {
return Some(ev);
}
}
None
}
}
pub struct Window {
pub 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(display: &Arc<XConnection>, builder: BuilderAttribs) -> Result<Window, CreationError> {
let dimensions = builder.dimensions.unwrap_or((800, 600));
let screen_id = match builder.monitor {
Some(PlatformMonitorID::X(MonitorID(_, monitor))) => monitor as i32,
_ => unsafe { (display.xlib.XDefaultScreen)(display.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 = display.glx.as_ref().unwrap().ChooseFBConfig(display.display as *mut _, (display.xlib.XDefaultScreen)(display.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
(display.xlib.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 (display.xf86vmode.XF86VidModeGetAllModeLines)(display.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 visual_infos: ffi::glx::types::XVisualInfo = unsafe {
let vi = display.glx.as_ref().unwrap().GetVisualFromFBConfig(display.display as *mut _, fb_config);
if vi.is_null() {
return Err(OsError(format!("glx::ChooseVisual failed")));
}
let vi_copy = ptr::read(vi as *const _);
(display.xlib.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 { display.glx.as_ref().unwrap().GetFBConfigAttrib(display.display as *mut _, fb_config, attrib, &mut value); }
value
};
PixelFormat {
hardware_accelerated: true,
color_bits: get_attrib(ffi::glx::RED_SIZE as libc::c_int) as u8 +
get_attrib(ffi::glx::GREEN_SIZE as libc::c_int) as u8 +
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 { (display.xlib.XDefaultRootWindow)(display.display) };
// creating the color map
let cmap = unsafe {
let cmap = (display.xlib.XCreateColormap)(display.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 {
(display.xf86vmode.XF86VidModeSwitchToMode)(display.display, screen_id, *modes.offset(best_mode as isize));
(display.xf86vmode.XF86VidModeSetViewPort)(display.display, screen_id, 0, 0);
set_win_attr.override_redirect = 1;
}
}
// finally creating the window
let window = unsafe {
let win = (display.xlib.XCreateWindow)(display.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 {
(display.xlib.XMapRaised)(display.display, window);
(display.xlib.XFlush)(display.display);
}
}
// creating window, step 2
let wm_delete_window = unsafe {
let mut wm_delete_window = with_c_str("WM_DELETE_WINDOW", |delete_window|
(display.xlib.XInternAtom)(display.display, delete_window, 0)
);
(display.xlib.XSetWMProtocols)(display.display, window, &mut wm_delete_window, 1);
with_c_str(&*builder.title, |title| {;
(display.xlib.XStoreName)(display.display, window, title);
});
(display.xlib.XFlush)(display.display);
wm_delete_window
};
// creating IM
let im = unsafe {
let _lock = GLOBAL_XOPENIM_LOCK.lock().unwrap();
let im = (display.xlib.XOpenIM)(display.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|
(display.xlib.XCreateIC)(
im, input_style,
ffi::XIMPreeditNothing | ffi::XIMStatusNothing, client_window,
window, ptr::null::<()>()
)
)
);
if ic.is_null() {
return Err(OsError(format!("XCreateIC failed")));
}
(display.xlib.XSetICFocus)(ic);
ic
};
// Attempt to make keyboard input repeat detectable
unsafe {
let mut supported_ptr = ffi::False;
(display.xlib.XkbSetDetectableAutoRepeat)(display.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 = (display.xlib.XAllocClassHint)();
(*hint).res_name = c_name as *mut i8;
(*hint).res_class = c_name as *mut i8;
(display.xlib.XSetClassHint)(display.display, window, hint);
(display.xlib.XFree)(hint as *mut libc::c_void);
});
}
let is_fullscreen = builder.monitor.is_some();
// creating the context
let context = match builder.gl_version {
GlRequest::Latest | GlRequest::Specific(Api::OpenGl, _) | GlRequest::GlThenGles { .. } => {
if let Some(ref glx) = display.glx {
Context::Glx(try!(GlxContext::new(glx.clone(), builder, display.display, window,
fb_config, visual_infos)))
} else if let Some(ref egl) = display.egl {
Context::Egl(try!(EglContext::new(egl.clone(), builder, Some(display.display as *const _), window as *const _)))
} else {
return Err(CreationError::NotSupported);
}
},
GlRequest::Specific(Api::OpenGlEs, _) => {
if let Some(ref egl) = display.egl {
Context::Egl(try!(EglContext::new(egl.clone(), builder, Some(display.display as *const _), window as *const _)))
} else {
return Err(CreationError::NotSupported);
}
},
GlRequest::Specific(_, _) => {
return Err(CreationError::NotSupported);
},
};
// creating the window object
let window = Window {
x: Arc::new(XWindow {
display: display.clone(),
window: window,
im: im,
ic: ic,
context: context,
screen_id: screen_id,
is_fullscreen: is_fullscreen,
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 {
(self.x.display.xlib.XStoreName)(self.x.display.display, self.x.window, title);
(self.x.display.xlib.XFlush)(self.x.display.display);
})
}
pub fn show(&self) {
unsafe {
(self.x.display.xlib.XMapRaised)(self.x.display.display, self.x.window);
(self.x.display.xlib.XFlush)(self.x.display.display);
}
}
pub fn hide(&self) {
unsafe {
(self.x.display.xlib.XUnmapWindow)(self.x.display.display, self.x.window);
(self.x.display.xlib.XFlush)(self.x.display.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 (self.x.display.xlib.XGetGeometry)(self.x.display.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 { (self.x.display.xlib.XMoveWindow)(self.x.display.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 fn platform_display(&self) -> *mut libc::c_void {
self.x.display.display as *mut libc::c_void
}
pub fn platform_window(&self) -> *mut libc::c_void {
self.x.window as *mut libc::c_void
}
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 = (self.x.display.xcursor.XcursorLibraryLoadCursor)(self.x.display.display, c_string.as_ptr());
(self.x.display.xlib.XDefineCursor)(self.x.display.display, self.x.window, xcursor);
(self.x.display.xlib.XFlush)(self.x.display.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 {
(self.x.display.xlib.XUngrabPointer)(self.x.display.display, ffi::CurrentTime);
*cursor_state = CursorState::Normal;
Ok(())
}
},
(CursorState::Grab, CursorState::Normal) => {
unsafe {
*cursor_state = CursorState::Grab;
match (self.x.display.xlib.XGrabPointer)(
self.x.display.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 {
(self.x.display.xlib.XWarpPointer)(self.x.display.display, 0, self.x.window, 0, 0, 0, 0, x, y);
}
Ok(())
}
}
impl GlContext for Window {
unsafe fn make_current(&self) {
match self.x.context {
Context::Glx(ref ctxt) => ctxt.make_current(),
Context::Egl(ref ctxt) => ctxt.make_current(),
Context::None => {}
}
}
fn is_current(&self) -> bool {
match self.x.context {
Context::Glx(ref ctxt) => ctxt.is_current(),
Context::Egl(ref ctxt) => ctxt.is_current(),
Context::None => panic!()
}
}
fn get_proc_address(&self, addr: &str) -> *const libc::c_void {
match self.x.context {
Context::Glx(ref ctxt) => ctxt.get_proc_address(addr),
Context::Egl(ref ctxt) => ctxt.get_proc_address(addr),
Context::None => ptr::null()
}
}
fn swap_buffers(&self) {
match self.x.context {
Context::Glx(ref ctxt) => ctxt.swap_buffers(),
Context::Egl(ref ctxt) => ctxt.swap_buffers(),
Context::None => {}
}
}
fn get_api(&self) -> Api {
match self.x.context {
Context::Glx(ref ctxt) => ctxt.get_api(),
Context::Egl(ref ctxt) => ctxt.get_api(),
Context::None => panic!()
}
}
fn get_pixel_format(&self) -> PixelFormat {
self.pixel_format.clone()
}
}

100
src/api/x11/xdisplay.rs Normal file
View file

@ -0,0 +1,100 @@
use std::ptr;
use std::ffi::CString;
use libc;
use super::ffi;
use api::egl::ffi::egl::Egl;
use api::dlopen;
/// A connection to an X server.
pub struct XConnection {
pub xlib: ffi::Xlib,
pub xf86vmode: ffi::Xf86vmode,
pub xcursor: ffi::Xcursor,
pub glx: Option<ffi::glx::Glx>,
pub egl: Option<Egl>,
pub display: *mut ffi::Display,
}
unsafe impl Send for XConnection {}
unsafe impl Sync for XConnection {}
/// Error returned if this system doesn't have XLib or can't create an X connection.
#[derive(Copy, Clone, Debug)]
pub struct XNotSupported;
impl XConnection {
pub fn new() -> Result<XConnection, XNotSupported> {
// opening the libraries
let xlib = try!(ffi::Xlib::open().map_err(|_| XNotSupported));
let xcursor = try!(ffi::Xcursor::open().map_err(|_| XNotSupported));
let xf86vmode = try!(ffi::Xf86vmode::open().map_err(|_| XNotSupported));
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
}
unsafe { (xlib.XInitThreads)() };
unsafe { (xlib.XSetErrorHandler)(Some(x_error_callback)) };
// TODO: use something safer than raw "dlopen"
let glx = {
let mut libglx = unsafe { dlopen::dlopen(b"libGL.so.1\0".as_ptr() as *const _, dlopen::RTLD_NOW) };
if libglx.is_null() {
libglx = unsafe { dlopen::dlopen(b"libGL.so\0".as_ptr() as *const _, dlopen::RTLD_NOW) };
}
if libglx.is_null() {
None
} else {
Some(ffi::glx::Glx::load_with(|sym| {
let sym = CString::new(sym).unwrap();
unsafe { dlopen::dlsym(libglx, sym.as_ptr()) }
}))
}
};
// TODO: use something safer than raw "dlopen"
let egl = {
let libegl = unsafe { dlopen::dlopen(b"libEGL.so\0".as_ptr() as *const _, dlopen::RTLD_NOW) };
if libegl.is_null() {
None
} else {
Some(Egl::load_with(|sym| {
let sym = CString::new(sym).unwrap();
unsafe { dlopen::dlsym(libegl, sym.as_ptr()) }
}))
}
};
// calling XOpenDisplay
let display = unsafe {
let display = (xlib.XOpenDisplay)(ptr::null());
if display.is_null() {
return Err(XNotSupported);
}
display
};
Ok(XConnection {
xlib: xlib,
xf86vmode: xf86vmode,
xcursor: xcursor,
glx: glx,
egl: egl,
display: display,
})
}
}
impl Drop for XConnection {
fn drop(&mut self) {
unsafe { (self.xlib.XCloseDisplay)(self.display) };
}
}

20
src/platform/linux/api_dispatch.rs
View file

@ -4,6 +4,7 @@ pub use api::x11::{Window, WindowProxy, MonitorID, get_available_monitors, get_p
pub use api::x11::{WaitEventsIterator, PollEventsIterator};*/ pub use api::x11::{WaitEventsIterator, PollEventsIterator};*/
use std::collections::VecDeque; use std::collections::VecDeque;
use std::sync::Arc;
use BuilderAttribs; use BuilderAttribs;
use CreationError; use CreationError;
@ -16,9 +17,10 @@ use libc;
use api::wayland; use api::wayland;
use api::x11; use api::x11;
use api::x11::XConnection;
enum Backend { enum Backend {
X, X(Arc<XConnection>),
Wayland Wayland
} }
@ -28,7 +30,7 @@ lazy_static!(
if false && wayland::is_available() { if false && wayland::is_available() {
Backend::Wayland Backend::Wayland
} else { } else {
Backend::X Backend::X(Arc::new(XConnection::new().unwrap()))
} }
}; };
); );
@ -70,16 +72,17 @@ pub fn get_available_monitors() -> VecDeque<MonitorID> {
.into_iter() .into_iter()
.map(MonitorID::Wayland) .map(MonitorID::Wayland)
.collect(), .collect(),
Backend::X => x11::get_available_monitors() Backend::X(ref connec) => x11::get_available_monitors(connec)
.into_iter() .into_iter()
.map(MonitorID::X) .map(MonitorID::X)
.collect(), .collect(),
} }
} }
pub fn get_primary_monitor() -> MonitorID { pub fn get_primary_monitor() -> MonitorID {
match *BACKEND { match *BACKEND {
Backend::Wayland => MonitorID::Wayland(wayland::get_primary_monitor()), Backend::Wayland => MonitorID::Wayland(wayland::get_primary_monitor()),
Backend::X => MonitorID::X(x11::get_primary_monitor()), Backend::X(ref connec) => MonitorID::X(x11::get_primary_monitor(connec)),
} }
} }
@ -147,7 +150,7 @@ impl Window {
pub fn new(builder: BuilderAttribs) -> Result<Window, CreationError> { pub fn new(builder: BuilderAttribs) -> Result<Window, CreationError> {
match *BACKEND { match *BACKEND {
Backend::Wayland => wayland::Window::new(builder).map(Window::Wayland), Backend::Wayland => wayland::Window::new(builder).map(Window::Wayland),
Backend::X => x11::Window::new(builder).map(Window::X), Backend::X(ref connec) => x11::Window::new(connec, builder).map(Window::X),
} }
} }
@ -286,7 +289,6 @@ impl Window {
} }
impl GlContext for Window { impl GlContext for Window {
unsafe fn make_current(&self) { unsafe fn make_current(&self) {
match self { match self {
&Window::X(ref w) => w.make_current(), &Window::X(ref w) => w.make_current(),