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authorVictor Berger <victor.berger@m4x.org>2015-04-30 07:49:46 +0200
committerVictor Berger <victor.berger@m4x.org>2015-05-06 23:30:45 +0200
commit1e0dd2290e186b062b8a923fe87bdd7a3fb0941d (patch)
tree0ecb939f16818d019b53e57af7f06d2e33360b0b /src
parent9f13395cac420d3e2d0084c706861fef0b5a19aa (diff)
downloadglutin-1e0dd2290e186b062b8a923fe87bdd7a3fb0941d.tar.gz
glutin-1e0dd2290e186b062b8a923fe87bdd7a3fb0941d.zip
Firsts steps of a wayland backend.
Diffstat (limited to 'src')
-rw-r--r--src/api/mod.rs1
-rw-r--r--src/api/wayland/mod.rs378
2 files changed, 379 insertions, 0 deletions
diff --git a/src/api/mod.rs b/src/api/mod.rs
index b1a7249..fe43616 100644
--- a/src/api/mod.rs
+++ b/src/api/mod.rs
@@ -6,5 +6,6 @@ pub mod egl;
pub mod emscripten;
pub mod glx;
pub mod osmesa;
+pub mod wayland;
pub mod win32;
pub mod x11;
diff --git a/src/api/wayland/mod.rs b/src/api/wayland/mod.rs
new file mode 100644
index 0000000..d2ca990
--- /dev/null
+++ b/src/api/wayland/mod.rs
@@ -0,0 +1,378 @@
+#![cfg(target_os = "linux")]
+
+use self::wayland::egl::{EGLSurface, is_egl_available};
+use self::wayland::core::{Display, Registry, Compositor, Shell, ShellSurface,
+ Seat, Pointer, default_display, WSurface, SurfaceId,
+ Surface};
+
+use libc;
+use api::dlopen;
+use api::egl::Context as EglContext;
+
+use BuilderAttribs;
+use CreationError;
+use Event;
+use PixelFormat;
+use CursorState;
+use MouseCursor;
+use GlContext;
+
+use std::collections::{VecDeque, HashMap};
+use std::sync::{Arc, Mutex};
+use std::ffi::CString;
+
+extern crate wayland_client as wayland;
+
+struct WaylandContext {
+ pub display: Display,
+ pub registry: Registry,
+ pub compositor: Compositor,
+ pub shell: Shell,
+ pub seat: Seat,
+ pub pointer: Option<Pointer<WSurface>>,
+ windows_event_queues: Arc<Mutex<HashMap<SurfaceId, Arc<Mutex<VecDeque<Event>>>>>>,
+ current_pointer_surface: Arc<Mutex<Option<SurfaceId>>>
+}
+
+impl WaylandContext {
+ pub fn new() -> Option<WaylandContext> {
+ let display = match default_display() {
+ Some(d) => d,
+ None => return None,
+ };
+ let registry = display.get_registry();
+ // let the registry get its events
+ display.sync_roundtrip();
+ let compositor = match registry.get_compositor() {
+ Some(c) => c,
+ None => return None,
+ };
+ let shell = match registry.get_shell() {
+ Some(s) => s,
+ None => return None,
+ };
+ let seat = match registry.get_seats().into_iter().next() {
+ Some(s) => s,
+ None => return None,
+ };
+ // let the other globals get their events
+ display.sync_roundtrip();
+
+ let current_pointer_surface = Arc::new(Mutex::new(None));
+
+ // rustc has trouble finding the correct type here, so we explicit it.
+ let windows_event_queues = Arc::new(Mutex::new(
+ HashMap::<SurfaceId, Arc<Mutex<VecDeque<Event>>>>::new()
+ ));
+
+ // handle inputs
+ let mut pointer = seat.get_pointer();
+ if let Some(ref mut p) = pointer {
+ // set the enter/leave callbacks
+ let current_surface = current_pointer_surface.clone();
+ p.set_enter_action(move |_, sid, x, y| {
+ *current_surface.lock().unwrap() = Some(sid);
+ });
+ let current_surface = current_pointer_surface.clone();
+ p.set_leave_action(move |_, sid| {
+ *current_surface.lock().unwrap() = None;
+ });
+ // set the events callbacks
+ let current_surface = current_pointer_surface.clone();
+ let event_queues = windows_event_queues.clone();
+ p.set_motion_action(move |_, _, x, y| {
+ // dispatch to the appropriate queue
+ let sid = *current_surface.lock().unwrap();
+ if let Some(sid) = sid {
+ let map = event_queues.lock().unwrap();
+ if let Some(queue) = map.get(&sid) {
+ queue.lock().unwrap().push_back(Event::Moved(x as i32,y as i32))
+ }
+ }
+ });
+ let current_surface = current_pointer_surface.clone();
+ let event_queues = windows_event_queues.clone();
+ p.set_button_action(move |_, sid, b, s| {
+ use self::wayland::core::ButtonState;
+ use MouseButton;
+ use ElementState;
+ let button = match b {
+ 0x110 => MouseButton::Left,
+ 0x111 => MouseButton::Right,
+ 0x112 => MouseButton::Middle,
+ _ => return
+ };
+ let state = match s {
+ ButtonState::WL_POINTER_BUTTON_STATE_RELEASED => ElementState::Released,
+ ButtonState::WL_POINTER_BUTTON_STATE_PRESSED => ElementState::Pressed
+ };
+ // dispatch to the appropriate queue
+ let sid = *current_surface.lock().unwrap();
+ if let Some(sid) = sid {
+ let map = event_queues.lock().unwrap();
+ if let Some(queue) = map.get(&sid) {
+ queue.lock().unwrap().push_back(Event::MouseInput(state, button))
+ }
+ }
+ });
+ }
+ Some(WaylandContext {
+ display: display,
+ registry: registry,
+ compositor: compositor,
+ shell: shell,
+ seat: seat,
+ pointer: pointer,
+ windows_event_queues: windows_event_queues,
+ current_pointer_surface: current_pointer_surface
+ })
+ }
+
+ fn register_surface(&self, sid: SurfaceId, queue: Arc<Mutex<VecDeque<Event>>>) {
+ self.windows_event_queues.lock().unwrap().insert(sid, queue);
+ }
+
+ fn deregister_surface(&self, sid: SurfaceId) {
+ self.windows_event_queues.lock().unwrap().remove(&sid);
+ }
+}
+
+lazy_static! {
+ static ref WAYLAND_CONTEXT: Option<WaylandContext> = {
+ WaylandContext::new()
+ };
+}
+
+pub struct Window {
+ shell_surface: ShellSurface<EGLSurface>,
+ pending_events: Arc<Mutex<VecDeque<Event>>>,
+ pub context: EglContext,
+}
+
+// It is okay, as the window is completely self-owned: it has its
+// own wayland connexion.
+unsafe impl Send for Window {}
+
+#[derive(Clone)]
+pub struct WindowProxy;
+
+impl WindowProxy {
+ pub fn wakeup_event_loop(&self) {
+ unimplemented!()
+ }
+}
+
+pub struct MonitorID;
+
+pub fn get_available_monitors() -> VecDeque<MonitorID> {
+ VecDeque::new()
+}
+pub fn get_primary_monitor() -> MonitorID {
+ MonitorID
+}
+
+impl MonitorID {
+ pub fn get_name(&self) -> Option<String> {
+ unimplemented!();
+ }
+
+ pub fn get_native_identifier(&self) -> ::native_monitor::NativeMonitorId {
+ ::native_monitor::NativeMonitorId::Unavailable
+ }
+
+ pub fn get_dimensions(&self) -> (u32, u32) {
+ unimplemented!();
+ }
+}
+
+
+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(ref ctxt) = *WAYLAND_CONTEXT {
+ ctxt.display.dispatch_pending();
+ }
+ self.window.pending_events.lock().unwrap().pop_front()
+ }
+}
+
+pub struct WaitEventsIterator<'a> {
+ window: &'a Window,
+}
+
+impl<'a> Iterator for WaitEventsIterator<'a> {
+ type Item = Event;
+
+ fn next(&mut self) -> Option<Event> {
+ if let Some(ref ctxt) = *WAYLAND_CONTEXT {
+ ctxt.display.dispatch();
+ }
+ self.window.pending_events.lock().unwrap().pop_front()
+ }
+}
+
+impl Window {
+ pub fn new(builder: BuilderAttribs) -> Result<Window, CreationError> {
+ use self::wayland::internals::FFI;
+
+ let wayland_context = match *WAYLAND_CONTEXT {
+ Some(ref c) => c,
+ None => return Err(CreationError::NotSupported),
+ };
+
+ if !is_egl_available() { return Err(CreationError::NotSupported) }
+
+ let (w, h) = builder.dimensions.unwrap_or((800, 600));
+
+ let surface = EGLSurface::new(
+ wayland_context.compositor.create_surface(),
+ w as i32,
+ h as i32
+ );
+
+ let context = {
+ 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()) }
+ });
+ try!(EglContext::new(
+ egl,
+ builder,
+ Some(wayland_context.display.ptr() as *const _),
+ surface.ptr() as *const _
+ ))
+ };
+
+ let shell_surface = wayland_context.shell.get_shell_surface(surface);
+ shell_surface.set_toplevel();
+ let events = Arc::new(Mutex::new(VecDeque::new()));
+
+ wayland_context.register_surface(shell_surface.get_wsurface().get_id(), events.clone());
+
+ wayland_context.display.flush();
+
+ Ok(Window {
+ shell_surface: shell_surface,
+ pending_events: events,
+ context: context
+ })
+ }
+
+ pub fn is_closed(&self) -> bool {
+ false
+ }
+
+ pub fn set_title(&self, title: &str) {
+ }
+
+ pub fn show(&self) {
+ }
+
+ pub fn hide(&self) {
+ }
+
+ pub fn get_position(&self) -> Option<(i32, i32)> {
+ unimplemented!()
+ }
+
+ pub fn set_position(&self, x: i32, y: i32) {
+ }
+
+ pub fn get_inner_size(&self) -> Option<(u32, u32)> {
+ unimplemented!()
+ }
+
+ pub fn get_outer_size(&self) -> Option<(u32, u32)> {
+ unimplemented!()
+ }
+
+ pub fn set_inner_size(&self, _x: u32, _y: u32) {
+ unimplemented!()
+ }
+
+ pub fn create_window_proxy(&self) -> WindowProxy {
+ unimplemented!()
+ }
+
+ pub fn poll_events(&self) -> PollEventsIterator {
+ PollEventsIterator {
+ window: self
+ }
+ }
+
+ pub fn wait_events(&self) -> WaitEventsIterator {
+ WaitEventsIterator {
+ window: self
+ }
+ }
+
+ pub fn set_window_resize_callback(&mut self, _: Option<fn(u32, u32)>) {
+ }
+
+ pub fn set_cursor(&self, cursor: MouseCursor) {
+ }
+
+ pub fn set_cursor_state(&self, state: CursorState) -> Result<(), String> {
+ Ok(())
+ }
+
+ pub fn hidpi_factor(&self) -> f32 {
+ 1.0
+ }
+
+ pub fn set_cursor_position(&self, x: i32, y: i32) -> Result<(), ()> {
+ Ok(())
+ }
+
+ pub fn platform_display(&self) -> *mut libc::c_void {
+ unimplemented!()
+ }
+
+ pub fn platform_window(&self) -> *mut libc::c_void {
+ unimplemented!()
+ }
+}
+
+impl GlContext for Window {
+
+ unsafe fn make_current(&self) {
+ self.context.make_current()
+ }
+
+ fn is_current(&self) -> bool {
+ self.context.is_current()
+ }
+
+ fn get_proc_address(&self, addr: &str) -> *const libc::c_void {
+ self.context.get_proc_address(addr)
+ }
+
+ fn swap_buffers(&self) {
+ self.context.swap_buffers()
+ }
+
+ fn get_api(&self) -> ::Api {
+ self.context.get_api()
+ }
+
+ fn get_pixel_format(&self) -> PixelFormat {
+ self.context.get_pixel_format().clone()
+ }
+}
+
+impl Drop for Window {
+ fn drop(&mut self) {
+ if let Some(ref ctxt) = *WAYLAND_CONTEXT {
+ ctxt.deregister_surface(self.shell_surface.get_wsurface().get_id())
+ }
+ }
+} \ No newline at end of file