linux: move api transition boilerplate to x11/wayland submodules

src/platform/linux/x11/mod.rs

@@ -6,8 +6,119 @@ pub use self::xdisplay::{XConnection, XNotSupported, XError};
 
 pub mod ffi;
 
+use platform::PlatformSpecificWindowBuilderAttributes;
+use CreationError;
+
+use std::sync::Arc;
+
 mod events;
 mod input;
 mod monitor;
 mod window;
 mod xdisplay;
+
+// API TRANSITION
+//
+// We don't use the gen_api_transistion!() macro but rather do the expansion manually:
+//
+// As this module is nested into platform/linux, its code is not _exactly_ the same as
+// the one generated by the macro.
+
+pub struct EventsLoop {
+    windows: ::std::sync::Mutex<Vec<::std::sync::Arc<Window>>>,
+    interrupted: ::std::sync::atomic::AtomicBool,
+}
+
+impl EventsLoop {
+    pub fn new() -> EventsLoop {
+        EventsLoop {
+            windows: ::std::sync::Mutex::new(vec![]),
+            interrupted: ::std::sync::atomic::AtomicBool::new(false),
+        }
+    }
+
+    pub fn interrupt(&self) {
+        self.interrupted.store(true, ::std::sync::atomic::Ordering::Relaxed);
+    }
+
+    pub fn poll_events<F>(&self, mut callback: F)
+        where F: FnMut(::Event)
+    {
+        let mut windows = self.windows.lock().unwrap();
+        for window in windows.iter() {
+            for event in window.poll_events() {
+                callback(::Event::WindowEvent {
+                    window_id: ::WindowId(::platform::WindowId::X(WindowId(&**window as *const Window as usize))),
+                    event: event,
+                })
+            }
+        }
+    }
+
+    pub fn run_forever<F>(&self, mut callback: F)
+        where F: FnMut(::Event)
+    {
+        self.interrupted.store(false, ::std::sync::atomic::Ordering::Relaxed);
+
+        // Yeah that's a very bad implementation.
+        loop {
+            self.poll_events(|e| callback(e));
+            ::std::thread::sleep_ms(5);
+            if self.interrupted.load(::std::sync::atomic::Ordering::Relaxed) {
+                break;
+            }
+        }
+    }
+}
+
+#[derive(Debug, Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
+pub struct WindowId(usize);
+
+pub struct Window2 {
+    pub window: ::std::sync::Arc<Window>,
+    events_loop: ::std::sync::Weak<::platform::EventsLoop>,
+}
+
+impl ::std::ops::Deref for Window2 {
+    type Target = Window;
+    #[inline]
+    fn deref(&self) -> &Window {
+        &*self.window
+    }
+}
+
+impl Window2 {
+    pub fn new(events_loop: ::std::sync::Arc<::platform::EventsLoop>, display: &Arc<XConnection>,
+               window: &::WindowAttributes, pl_attribs: &PlatformSpecificWindowBuilderAttributes)
+               -> Result<Window2, CreationError>
+    {
+        let win = ::std::sync::Arc::new(try!(Window::new(display, window, pl_attribs)));
+        if let ::platform::EventsLoop::X(ref ev) = *events_loop {
+            ev.windows.lock().unwrap().push(win.clone());
+        } else {
+            // It should not be possible to create an eventloop not matching the backend
+            // in use
+            unreachable!()
+        }
+        Ok(Window2 {
+            window: win,
+            events_loop: ::std::sync::Arc::downgrade(&events_loop),
+        })
+    }
+
+    #[inline]
+    pub fn id(&self) -> WindowId {
+        WindowId(&*self.window as *const Window as usize)
+    }
+}
+
+impl Drop for Window2 {
+    fn drop(&mut self) {
+        if let Some(ev) = self.events_loop.upgrade() {
+            if let ::platform::EventsLoop::X(ref ev) = *ev {
+                let mut windows = ev.windows.lock().unwrap();
+                windows.retain(|w| &**w as *const Window != &*self.window as *const _);
+            }
+        }
+    }
+}

src/platform/linux/x11/xdisplay.rs

@@ -7,7 +7,6 @@ use std::sync::Mutex;
 use libc;
 
 use super::ffi;
-use super::super::dlopen;
 
 /// A connection to an X server.
 pub struct XConnection {