Merge pull request #448 from vberger/x-wayland-split

Make platform::linux generic over X11 and Wayland

5 files changed, 347 insertions, 10 deletions

diff --git a/src/api/glx/mod.rs b/src/api/glx/mod.rs
index 9cda90e..3c0c8a0 100644
--- a/src/api/glx/mod.rs
+++ b/src/api/glx/mod.rs
@@ -14,6 +14,8 @@ use std::{mem, ptr};
 
 use api::x11::ffi;
 
+use platform::Window as PlatformWindow;
+
 pub struct Context {
     glx: ffi::glx::Glx,
     display: *mut ffi::Display,
@@ -80,9 +82,12 @@ impl Context {
             });
 
             let share = if let Some(win) = builder.sharing {
-                match win.x.context {
-                    ::api::x11::Context::Glx(ref c) => c.context,
-                    _ => panic!("Cannot share contexts between different APIs")
+                match win {
+                    &PlatformWindow::X(ref win) => match win.x.context {
+                        ::api::x11::Context::Glx(ref c) => c.context,
+                        _ => panic!("Cannot share contexts between different APIs")
+                    },
+                    _ => panic!("Cannot use glx on a non-X11 window.")
                 }
             } else {
                 ptr::null()
diff --git a/src/api/wayland/mod.rs b/src/api/wayland/mod.rs
index f70d62e..4fd0357 100644
--- a/src/api/wayland/mod.rs
+++ b/src/api/wayland/mod.rs
@@ -147,6 +147,10 @@ lazy_static! {
     };
 }
 
+pub fn is_available() -> bool {
+    WAYLAND_CONTEXT.is_some()
+}
+
 pub struct Window {
     shell_surface: ShellSurface<EGLSurface>,
     pending_events: Arc<Mutex<VecDeque<Event>>>,
diff --git a/src/api/x11/mod.rs b/src/api/x11/mod.rs
index 0dcf85b..30adadc 100644
--- a/src/api/x11/mod.rs
+++ b/src/api/x11/mod.rs
@@ -21,6 +21,8 @@ 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};
 
 mod events;
@@ -310,9 +312,9 @@ pub struct Window {
 
 impl Window {
     pub fn new(builder: BuilderAttribs) -> Result<Window, CreationError> {
-        let xlib = ffi::Xlib::open().unwrap();        // FIXME: gracious handling
-        let xcursor = ffi::Xcursor::open().unwrap();        // FIXME: gracious handling
-        let xf86vmode = ffi::Xf86vmode::open().unwrap();        // FIXME: gracious handling
+        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) };
@@ -342,8 +344,8 @@ impl Window {
         };
 
         let screen_id = match builder.monitor {
-            Some(MonitorID(monitor)) => monitor as i32,
-            None => unsafe { (xlib.XDefaultScreen)(display) },
+            Some(PlatformMonitorID::X(MonitorID(monitor))) => monitor as i32,
+            _ => unsafe { (xlib.XDefaultScreen)(display) },
         };
 
         // getting the FBConfig
diff --git a/src/platform/linux/api_dispatch.rs b/src/platform/linux/api_dispatch.rs
new file mode 100644
index 0000000..1a5e1ab
--- /dev/null
+++ b/src/platform/linux/api_dispatch.rs
@@ -0,0 +1,324 @@
+/*#[cfg(feature = "window")]
+pub use api::x11::{Window, WindowProxy, MonitorID, get_available_monitors, get_primary_monitor};
+#[cfg(feature = "window")]
+pub use api::x11::{WaitEventsIterator, PollEventsIterator};*/
+
+use std::collections::VecDeque;
+
+use BuilderAttribs;
+use CreationError;
+use CursorState;
+use Event;
+use GlContext;
+use MouseCursor;
+use PixelFormat;
+use libc;
+
+use api::wayland;
+use api::x11;
+
+pub enum Window {
+    #[doc(hidden)]
+    X(x11::Window),
+    #[doc(hidden)]
+    Wayland(wayland::Window)
+}
+
+#[derive(Clone)]
+pub enum WindowProxy {
+    #[doc(hidden)]
+    X(x11::WindowProxy),
+    #[doc(hidden)]
+    Wayland(wayland::WindowProxy)
+}
+
+impl WindowProxy {
+    pub fn wakeup_event_loop(&self) {
+        match self {
+            &WindowProxy::X(ref wp) => wp.wakeup_event_loop(),
+            &WindowProxy::Wayland(ref wp) => wp.wakeup_event_loop()
+        }
+    }
+}
+
+pub enum MonitorID {
+    #[doc(hidden)]
+    X(x11::MonitorID),
+    #[doc(hidden)]
+    Wayland(wayland::MonitorID)
+}
+
+pub fn get_available_monitors() -> VecDeque<MonitorID> {
+    if false && wayland::is_available() {
+        // We are doing wayland
+        wayland::get_available_monitors()
+            .into_iter()
+            .map(|m| MonitorID::Wayland(m))
+            .collect()
+    } else {
+        // Fallback on X
+        x11::get_available_monitors()
+            .into_iter()
+            .map(|m| MonitorID::X(m))
+            .collect()
+    }
+}
+pub fn get_primary_monitor() -> MonitorID {
+    if false && wayland::is_available() {
+        MonitorID::Wayland(wayland::get_primary_monitor())
+    } else {
+        MonitorID::X(x11::get_primary_monitor())
+    }
+}
+
+impl MonitorID {
+    pub fn get_name(&self) -> Option<String> {
+        match self {
+            &MonitorID::X(ref m) => m.get_name(),
+            &MonitorID::Wayland(ref m) => m.get_name()
+        }
+    }
+
+    pub fn get_native_identifier(&self) -> ::native_monitor::NativeMonitorId {
+        match self {
+            &MonitorID::X(ref m) => m.get_native_identifier(),
+            &MonitorID::Wayland(ref m) => m.get_native_identifier()
+        }
+    }
+
+    pub fn get_dimensions(&self) -> (u32, u32) {
+        match self {
+            &MonitorID::X(ref m) => m.get_dimensions(),
+            &MonitorID::Wayland(ref m) => m.get_dimensions()
+        }
+    }
+}
+
+
+pub enum PollEventsIterator<'a> {
+    #[doc(hidden)]
+    X(x11::PollEventsIterator<'a>),
+    #[doc(hidden)]
+    Wayland(wayland::PollEventsIterator<'a>)
+}
+
+impl<'a> Iterator for PollEventsIterator<'a> {
+    type Item = Event;
+
+    fn next(&mut self) -> Option<Event> {
+        match self {
+            &mut PollEventsIterator::X(ref mut it) => it.next(),
+            &mut PollEventsIterator::Wayland(ref mut it) => it.next()
+        }
+    }
+}
+
+pub enum WaitEventsIterator<'a> {
+    #[doc(hidden)]
+    X(x11::WaitEventsIterator<'a>),
+    #[doc(hidden)]
+    Wayland(wayland::WaitEventsIterator<'a>)
+}
+
+impl<'a> Iterator for WaitEventsIterator<'a> {
+    type Item = Event;
+
+    fn next(&mut self) -> Option<Event> {
+        match self {
+            &mut WaitEventsIterator::X(ref mut it) => it.next(),
+            &mut WaitEventsIterator::Wayland(ref mut it) => it.next()
+        }
+    }
+}
+
+impl Window {
+    pub fn new(builder: BuilderAttribs) -> Result<Window, CreationError> {
+        if false && wayland::is_available() {
+            // we have a wayland connection, go for it
+            let window = try!(wayland::Window::new(builder));
+            Ok(Window::Wayland(window))
+        } else {
+            // fallback on X
+            let window = try!(x11::Window::new(builder));
+            Ok(Window::X(window))
+        }
+    }
+
+    pub fn is_closed(&self) -> bool {
+        match self {
+            &Window::X(ref w) => w.is_closed(),
+            &Window::Wayland(ref w) => w.is_closed()
+        }
+    }
+
+    pub fn set_title(&self, title: &str) {
+        match self {
+            &Window::X(ref w) => w.set_title(title),
+            &Window::Wayland(ref w) => w.set_title(title)
+        }
+    }
+
+    pub fn show(&self) {
+        match self {
+            &Window::X(ref w) => w.show(),
+            &Window::Wayland(ref w) => w.show()
+        }
+    }
+
+    pub fn hide(&self) {
+        match self {
+            &Window::X(ref w) => w.hide(),
+            &Window::Wayland(ref w) => w.hide()
+        }
+    }
+
+    pub fn get_position(&self) -> Option<(i32, i32)> {
+        match self {
+            &Window::X(ref w) => w.get_position(),
+            &Window::Wayland(ref w) => w.get_position()
+        }
+    }
+
+    pub fn set_position(&self, x: i32, y: i32) {
+        match self {
+            &Window::X(ref w) => w.set_position(x, y),
+            &Window::Wayland(ref w) => w.set_position(x, y)
+        }
+    }
+
+    pub fn get_inner_size(&self) -> Option<(u32, u32)> {
+        match self {
+            &Window::X(ref w) => w.get_inner_size(),
+            &Window::Wayland(ref w) => w.get_inner_size()
+        }
+    }
+
+    pub fn get_outer_size(&self) -> Option<(u32, u32)> {
+        match self {
+            &Window::X(ref w) => w.get_outer_size(),
+            &Window::Wayland(ref w) => w.get_outer_size()
+        }
+    }
+
+    pub fn set_inner_size(&self, x: u32, y: u32) {
+        match self {
+            &Window::X(ref w) => w.set_inner_size(x, y),
+            &Window::Wayland(ref w) => w.set_inner_size(x, y)
+        }
+    }
+
+    pub fn create_window_proxy(&self) -> WindowProxy {
+        match self {
+            &Window::X(ref w) => WindowProxy::X(w.create_window_proxy()),
+            &Window::Wayland(ref w) => WindowProxy::Wayland(w.create_window_proxy())
+        }
+    }
+
+    pub fn poll_events(&self) -> PollEventsIterator {
+        match self {
+            &Window::X(ref w) => PollEventsIterator::X(w.poll_events()),
+            &Window::Wayland(ref w) => PollEventsIterator::Wayland(w.poll_events())
+        }
+    }
+
+    pub fn wait_events(&self) -> WaitEventsIterator {
+        match self {
+            &Window::X(ref w) => WaitEventsIterator::X(w.wait_events()),
+            &Window::Wayland(ref w) => WaitEventsIterator::Wayland(w.wait_events())
+        }
+    }
+
+    pub fn set_window_resize_callback(&mut self, callback: Option<fn(u32, u32)>) {
+        match self {
+            &mut Window::X(ref mut w) => w.set_window_resize_callback(callback),
+            &mut Window::Wayland(ref mut w) => w.set_window_resize_callback(callback)
+        }
+    }
+
+    pub fn set_cursor(&self, cursor: MouseCursor) {
+        match self {
+            &Window::X(ref w) => w.set_cursor(cursor),
+            &Window::Wayland(ref w) => w.set_cursor(cursor)
+        }
+    }
+
+    pub fn set_cursor_state(&self, state: CursorState) -> Result<(), String> {
+        match self {
+            &Window::X(ref w) => w.set_cursor_state(state),
+            &Window::Wayland(ref w) => w.set_cursor_state(state)
+        }
+    }
+
+    pub fn hidpi_factor(&self) -> f32 {
+       match self {
+            &Window::X(ref w) => w.hidpi_factor(),
+            &Window::Wayland(ref w) => w.hidpi_factor()
+        }
+    }
+
+    pub fn set_cursor_position(&self, x: i32, y: i32) -> Result<(), ()> {
+        match self {
+            &Window::X(ref w) => w.set_cursor_position(x, y),
+            &Window::Wayland(ref w) => w.set_cursor_position(x, y)
+        }
+    }
+
+    pub fn platform_display(&self) -> *mut libc::c_void {
+        match self {
+            &Window::X(ref w) => w.platform_display(),
+            &Window::Wayland(ref w) => w.platform_display()
+        }
+    }
+
+    pub fn platform_window(&self) -> *mut libc::c_void {
+        match self {
+            &Window::X(ref w) => w.platform_window(),
+            &Window::Wayland(ref w) => w.platform_window()
+        }
+    }
+}
+
+impl GlContext for Window {
+
+    unsafe fn make_current(&self) {
+        match self {
+            &Window::X(ref w) => w.make_current(),
+            &Window::Wayland(ref w) => w.make_current()
+        }
+    }
+
+    fn is_current(&self) -> bool {
+        match self {
+            &Window::X(ref w) => w.is_current(),
+            &Window::Wayland(ref w) => w.is_current()
+        }
+    }
+
+    fn get_proc_address(&self, addr: &str) -> *const libc::c_void {
+        match self {
+            &Window::X(ref w) => w.get_proc_address(addr),
+            &Window::Wayland(ref w) => w.get_proc_address(addr)
+        }
+    }
+
+    fn swap_buffers(&self) {
+        match self {
+            &Window::X(ref w) => w.swap_buffers(),
+            &Window::Wayland(ref w) => w.swap_buffers()
+        }
+    }
+
+    fn get_api(&self) -> ::Api {
+        match self {
+            &Window::X(ref w) => w.get_api(),
+            &Window::Wayland(ref w) => w.get_api()
+        }
+    }
+
+    fn get_pixel_format(&self) -> PixelFormat {
+        match self {
+            &Window::X(ref w) => w.get_pixel_format(),
+            &Window::Wayland(ref w) => w.get_pixel_format()
+        }
+    }
+}
\ No newline at end of file
diff --git a/src/platform/linux/mod.rs b/src/platform/linux/mod.rs
index 1e12a80..323a21a 100644
--- a/src/platform/linux/mod.rs
+++ b/src/platform/linux/mod.rs
@@ -10,9 +10,11 @@ use libc;
 use api::osmesa::{self, OsMesaContext};
 
 #[cfg(feature = "window")]
-pub use api::x11::{Window, WindowProxy, MonitorID, get_available_monitors, get_primary_monitor};
+pub use self::api_dispatch::{Window, WindowProxy, MonitorID, get_available_monitors, get_primary_monitor};
 #[cfg(feature = "window")]
-pub use api::x11::{WaitEventsIterator, PollEventsIterator};
+pub use self::api_dispatch::{WaitEventsIterator, PollEventsIterator};
+#[cfg(feature = "window")]
+mod api_dispatch;
 
 #[cfg(not(feature = "window"))]
 pub type Window = ();       // TODO: hack to make things work