Implement CursorPositionChanged event for X11

src/x11/ffi.rs

@@ -18,6 +18,7 @@ pub type GLXPixmap = XID;
 pub type GLXWindow = XID;
 pub type Pixmap = XID;
 pub type Status = libc::c_int;  // TODO: not sure
+pub type Time = libc::c_ulong;
 pub type Visual = ();   // TODO: not sure
 pub type VisualID = libc::c_ulong;   // TODO: not sure
 pub type Window = XID;
@@ -241,7 +242,7 @@ pub struct XClientMessageEvent {
     pub l: [libc::c_long, ..5],
 }
 
-#[reprc(C)]
+#[repr(C)]
 pub struct XResizeRequestEvent {
     pub type_: libc::c_int,
     pub serial: libc::c_ulong,
@@ -252,6 +253,25 @@ pub struct XResizeRequestEvent {
     pub height: libc::c_int,
 }
 
+#[repr(C)]
+pub struct XMotionEvent {
+    pub type_: libc::c_int,
+    pub serial: libc::c_ulong,
+    pub send_event: Bool,
+    pub display: *mut Display,
+    pub window: Window,
+    pub root: Window,
+    pub subwindow: Window,
+    pub time: Time,
+    pub x: libc::c_int,
+    pub y: libc::c_int,
+    pub x_root: libc::c_int,
+    pub y_root: libc::c_int,
+    pub state: libc::c_uint,
+    pub is_hint: libc::c_char,
+    pub same_screen: Bool,
+}
+
 #[link(name = "GL")]
 #[link(name = "X11")]
 extern "C" {

src/x11/mod.rs

@@ -61,7 +61,7 @@ impl Window {
             let mut swa: ffi::XSetWindowAttributes = unsafe { mem::zeroed() };
             swa.colormap = cmap;
             swa.event_mask = ffi::ExposureMask | ffi::ResizeRedirectMask |
-                ffi::VisibilityChangeMask | ffi::KeyPressMask;
+                ffi::VisibilityChangeMask | ffi::KeyPressMask | ffi::PointerMotionMask;
             swa
         };
 
@@ -168,6 +168,12 @@ impl Window {
                 events.push(SizeChanged(rs_event.width as uint, rs_event.height as uint));
             },
 
+            ffi::MotionNotify => {
+                use CursorPositionChanged;
+                let event: &ffi::XMotionEvent = unsafe { mem::transmute(&xev) };
+                events.push(CursorPositionChanged(event.x as uint, event.y as uint));
+            },
+
             _ => ()
         }