Merge pull request #215 from vberger/xdg_shell

Update wayland-window to support xdg_shell

Cargo.toml

@@ -37,7 +37,8 @@ dwmapi-sys = "0.1"
 
 [target.'cfg(any(target_os = "linux", target_os = "dragonfly", target_os = "freebsd", target_os = "openbsd"))'.dependencies]
 wayland-client = { version = "0.9.9", features = ["dlopen"] }
+wayland-protocols = { version = "0.9.9", features = ["unstable_protocols"] }
 wayland-kbd = "0.9.1"
-wayland-window = "0.6.1"
+wayland-window = "0.7.0"
 tempfile = "2.1"
 x11-dl = "2.8"

examples/cursor.rs

@@ -11,6 +11,12 @@ fn main() {
     let cursors = [MouseCursor::Default, MouseCursor::Crosshair, MouseCursor::Hand, MouseCursor::Arrow, MouseCursor::Move, MouseCursor::Text, MouseCursor::Wait, MouseCursor::Help, MouseCursor::Progress, MouseCursor::NotAllowed, MouseCursor::ContextMenu, MouseCursor::NoneCursor, MouseCursor::Cell, MouseCursor::VerticalText, MouseCursor::Alias, MouseCursor::Copy, MouseCursor::NoDrop, MouseCursor::Grab, MouseCursor::Grabbing, MouseCursor::AllScroll, MouseCursor::ZoomIn, MouseCursor::ZoomOut, MouseCursor::EResize, MouseCursor::NResize, MouseCursor::NeResize, MouseCursor::NwResize, MouseCursor::SResize, MouseCursor::SeResize, MouseCursor::SwResize, MouseCursor::WResize, MouseCursor::EwResize, MouseCursor::NsResize, MouseCursor::NeswResize, MouseCursor::NwseResize, MouseCursor::ColResize, MouseCursor::RowResize];
     let mut cursor_idx = 0;
 
+    if cfg!(target_os = "linux") {
+        println!("Running this example under wayland may not display a window at all.\n\
+                  This is normal and because this example does not actually draw anything in the window,\
+                  thus the compositor does not display it.");
+    }
+
     events_loop.run_forever(|event| {
         match event {
             Event::WindowEvent { event: WindowEvent::KeyboardInput { input: KeyboardInput { state: ElementState::Pressed, .. }, .. }, .. } => {

examples/fullscreen.rs

@@ -31,6 +31,12 @@ fn main() {
         .build(&events_loop)
         .unwrap();
 
+    if cfg!(target_os = "linux") {
+        println!("Running this example under wayland may not display a window at all.\n\
+                  This is normal and because this example does not actually draw anything in the window,\
+                  thus the compositor does not display it.");
+    }
+
     events_loop.run_forever(|event| {
         println!("{:?}", event);
 

examples/grabbing.rs

@@ -10,6 +10,12 @@ fn main() {
 
     let mut grabbed = false;
 
+    if cfg!(target_os = "linux") {
+        println!("Running this example under wayland may not display a window at all.\n\
+                  This is normal and because this example does not actually draw anything in the window,\
+                  thus the compositor does not display it.");
+    }
+
     events_loop.run_forever(|event| {
         println!("{:?}", event);
 

examples/min_max_size.rs

@@ -9,6 +9,12 @@ fn main() {
         .build(&events_loop)
         .unwrap();
 
+    if cfg!(target_os = "linux") {
+        println!("Running this example under wayland may not display a window at all.\n\
+                  This is normal and because this example does not actually draw anything in the window,\
+                  thus the compositor does not display it.");
+    }
+
     events_loop.run_forever(|event| {
         println!("{:?}", event);
 

examples/multiwindow.rs

@@ -9,6 +9,12 @@ fn main() {
 
     let mut num_windows = 3;
 
+    if cfg!(target_os = "linux") {
+        println!("Running this example under wayland may not display a window at all.\n\
+                  This is normal and because this example does not actually draw anything in the window,\
+                  thus the compositor does not display it.");
+    }
+
     events_loop.run_forever(|event| {
         match event {
             winit::Event::WindowEvent { event: winit::WindowEvent::Closed, window_id } => {

examples/proxy.rs

@@ -10,6 +10,12 @@ fn main() {
 
     let proxy = events_loop.create_proxy();
 
+    if cfg!(target_os = "linux") {
+        println!("Running this example under wayland may not display a window at all.\n\
+                  This is normal and because this example does not actually draw anything in the window,\
+                  thus the compositor does not display it.");
+    }
+
     std::thread::spawn(move || {
         // Wake up the `events_loop` once every second.
         loop {

examples/transparent.rs

@@ -9,6 +9,12 @@ fn main() {
 
     window.set_title("A fantastic window!");
 
+    if cfg!(target_os = "linux") {
+        println!("Running this example under wayland may not display a window at all.\n\
+                  This is normal and because this example does not actually draw anything in the window,\
+                  thus the compositor does not display it.");
+    }
+
     events_loop.run_forever(|event| {
         println!("{:?}", event);
 

examples/window.rs

@@ -8,6 +8,12 @@ fn main() {
         .build(&events_loop)
         .unwrap();
 
+    if cfg!(target_os = "linux") {
+        println!("Running this example under wayland may not display a window at all.\n\
+                  This is normal and because this example does not actually draw anything in the window,\
+                  thus the compositor does not display it.");
+    }
+
     events_loop.run_forever(|event| {
         println!("{:?}", event);
 

src/platform/linux/wayland/context.rs

@@ -8,15 +8,18 @@ use wayland_client::{EnvHandler, default_connect, EventQueue, EventQueueHandle,
 use wayland_client::protocol::{wl_compositor, wl_seat, wl_shell, wl_shm, wl_subcompositor,
                                wl_display, wl_registry, wl_output, wl_surface, wl_buffer};
 
+use super::wayland_protocols::unstable::xdg_shell::client::zxdg_shell_v6;
+
 use super::{wayland_window, tempfile};
 
+use super::wayland_window::Shell;
+
 /*
  * Registry and globals handling
  */
 
 wayland_env!(InnerEnv,
     compositor: wl_compositor::WlCompositor,
-    shell: wl_shell::WlShell,
     shm: wl_shm::WlShm,
     subcompositor: wl_subcompositor::WlSubcompositor
 );
@@ -24,6 +27,7 @@ wayland_env!(InnerEnv,
 struct WaylandEnv {
     registry: wl_registry::WlRegistry,
     inner: EnvHandler<InnerEnv>,
+    shell: Option<wayland_window::Shell>,
     monitors: Vec<OutputInfo>,
     my_id: usize,
 }
@@ -53,6 +57,7 @@ impl WaylandEnv {
         WaylandEnv {
             registry: registry,
             inner: EnvHandler::new(),
+            shell: None,
             monitors: Vec::new(),
             my_id: 0,
         }
@@ -70,6 +75,24 @@ impl WaylandEnv {
         }
         None
     }
+
+    fn ensure_shell(&mut self) -> bool {
+        if self.shell.is_some() {
+            return true;
+        }
+        // xdg_shell is not available, so initialize wl_shell
+        for &(name, ref interface, _) in self.inner.globals() {
+            if interface == "wl_shell" {
+                self.shell = Some(Shell::Wl(self.registry.bind::<wl_shell::WlShell>(1, name)));
+                return true;
+            }
+        }
+        return false;
+    }
+
+    fn get_shell(&self) -> &Shell {
+        self.shell.as_ref().expect("Shell was not properly initialized")
+    }
 }
 
 impl Init for WaylandEnv {
@@ -87,13 +110,19 @@ impl wl_registry::Handler for WaylandEnv {
               interface: String,
               version: u32)
     {
-        if interface == "wl_output" {
+        if interface == wl_output::WlOutput::interface_name() {
             // intercept outputs
             // this "expect" cannot trigger (see https://github.com/vberger/wayland-client-rs/issues/69)
             let output = self.registry.bind::<wl_output::WlOutput>(1, name);
             evqh.register::<_, WaylandEnv>(&output, self.my_id);
             self.monitors.push(OutputInfo::new(output, name));
+        } else if interface == zxdg_shell_v6::ZxdgShellV6::interface_name() {
+            let xdg_shell = self.registry.bind::<zxdg_shell_v6::ZxdgShellV6>(1, name);
+			let xdg_ping_hid = evqh.add_handler(XdgShellPingHandler);
+            evqh.register::<_, XdgShellPingHandler>(&xdg_shell, xdg_ping_hid);
+            self.shell = Some(Shell::Xdg(xdg_shell));
         }
+
         self.inner.global(evqh, registry, name, interface, version);
     }
 
@@ -108,6 +137,16 @@ impl wl_registry::Handler for WaylandEnv {
     }
 }
 
+struct XdgShellPingHandler;
+
+impl zxdg_shell_v6::Handler for XdgShellPingHandler {
+    fn ping(&mut self, _: &mut EventQueueHandle, proxy: &zxdg_shell_v6::ZxdgShellV6, serial: u32) {
+        proxy.pong(serial);
+    }
+}
+
+declare_handler!(XdgShellPingHandler, zxdg_shell_v6::Handler, zxdg_shell_v6::ZxdgShellV6);
+
 declare_handler!(WaylandEnv, wl_registry::Handler, wl_registry::WlRegistry);
 
 impl wl_output::Handler for WaylandEnv {
@@ -175,10 +214,19 @@ impl WaylandContext {
         // this "expect" cannot trigger (see https://github.com/vberger/wayland-client-rs/issues/69)
         let registry = display.get_registry();
         let env_id = event_queue.add_handler_with_init(WaylandEnv::new(registry));
-        // two syncs fully initialize
+        // two round trips to fully initialize
         event_queue.sync_roundtrip().expect("Wayland connection unexpectedly lost");
         event_queue.sync_roundtrip().expect("Wayland connection unexpectedly lost");
 
+        {
+            let mut state = event_queue.state();
+            let mut env = state.get_mut_handler::<WaylandEnv>(env_id);
+            if !env.ensure_shell() {
+                // This is a compositor bug, it _must_ at least support xl_shell
+                panic!("Compositor didi not advertize xdg_shell not wl_shell.");
+            }
+        }
+
         Some(WaylandContext {
             evq: Mutex::new(event_queue),
             display: display,
@@ -216,10 +264,37 @@ impl WaylandContext {
         }
     }
 
+    fn blank_surface(&self, surface: &wl_surface::WlSurface, evq: &mut EventQueue, width: i32, height: i32) {
+        let mut tmp = tempfile::tempfile().expect("Failed to create a tmpfile buffer.");
+        for _ in 0..(width*height) {
+            tmp.write_all(&[0xff,0xff,0xff,0xff]).unwrap();
+        }
+        tmp.flush().unwrap();
+        let pool = {
+            let mut state = evq.state();
+            let env = state.get_mut_handler::<WaylandEnv>(self.env_id);
+            env.inner.shm.create_pool(tmp.as_raw_fd(), width*height*4)
+        };
+        let buffer = pool.create_buffer(0, width, height, width, wl_shm::Format::Argb8888).expect("Pool cannot be already dead");
+        surface.attach(Some(&buffer), 0, 0);
+        surface.commit();
+        // the buffer will keep the contents alive as needed
+        pool.destroy();
+
+        // create a handler to clean up initial buffer
+        let init_buffer_handler = InitialBufferHandler {
+            initial_buffer: Some((buffer.clone().unwrap(), tmp))
+        };
+        let initial_buffer_handler_id = evq.add_handler(init_buffer_handler);
+        // register the buffer to it
+        evq.register::<_, InitialBufferHandler>(&buffer, initial_buffer_handler_id);
+    }
+
     pub fn create_window<H: wayland_window::Handler>(&self, width: u32, height: u32)
-        -> (Arc<wl_surface::WlSurface>, wayland_window::DecoratedSurface<H>, wl_buffer::WlBuffer, File)
+        -> (Arc<wl_surface::WlSurface>, wayland_window::DecoratedSurface<H>)
     {
         let mut guard = self.evq.lock().unwrap();
+        let (surface, decorated, xdg) = {
             let mut state = guard.state();
             let env = state.get_mut_handler::<WaylandEnv>(self.env_id);
             let surface = Arc::new(env.inner.compositor.create_surface());
@@ -228,23 +303,26 @@ impl WaylandContext {
                 &env.inner.compositor,
                 &env.inner.subcompositor,
                 &env.inner.shm,
-            &env.inner.shell,
+                env.get_shell(),
                 env.get_seat(),
                 false
             ).expect("Failed to create a tmpfile buffer.");
-        // prepare a white content for the window, so that it exists
-        let mut tmp = tempfile::tempfile().expect("Failed to create a tmpfile buffer.");
-        for _ in 0..(width*height) {
-            tmp.write_all(&[0xff,0xff,0xff,0xff]).unwrap();
+            let xdg = match env.get_shell() {
+                &Shell::Xdg(_) => true,
+                &Shell::Wl(_) => false
+            };
+            (surface, decorated, xdg)
+        };
+
+        if !xdg {
+            // if using wl_shell, we need to draw something in order to kickstart
+            // the event loop
+            // if using xdg_shell, it is an error to do it now, and the events loop will not
+            // be stuck. We cannot draw anything before having received an appropriate event
+            // from the compositor
+            self.blank_surface(&surface, &mut *guard, width as i32, height as i32);
         }
-        tmp.flush().unwrap();
-        let pool = env.inner.shm.create_pool(tmp.as_raw_fd(), (width*height*4) as i32);
-        let buffer = pool.create_buffer(0, width as i32, height as i32, width as i32, wl_shm::Format::Argb8888).expect("Pool cannot be already dead");
-        surface.attach(Some(&buffer), 0, 0);
-        surface.commit();
-        // the buffer wiil keep the contents alive as needed
-        pool.destroy();
-        (surface, decorated, buffer, tmp)
+        (surface, decorated)
     }
 }
 
@@ -309,3 +387,19 @@ impl MonitorId {
         (0,0)
     }
 }
+
+// a handler to release the ressources acquired to draw the initial white screen as soon as
+// the compositor does not use them any more
+pub struct InitialBufferHandler {
+    initial_buffer: Option<(wl_buffer::WlBuffer, File)>
+}
+
+impl wl_buffer::Handler for InitialBufferHandler {
+    fn release(&mut self, _: &mut EventQueueHandle, buffer: &wl_buffer::WlBuffer) {
+        // release the ressources we've acquired for initial white window
+        buffer.destroy();
+        self.initial_buffer = None;
+    }
+}
+
+declare_handler!(InitialBufferHandler, wl_buffer::Handler, wl_buffer::WlBuffer);

src/platform/linux/wayland/event_loop.rs

@@ -155,6 +155,15 @@ impl EventsLoop {
                     }
                 );
             }
+            if decorated.handler().as_ref().map(|h| h.is_closed()).unwrap_or(false) {
+                 callback(
+                    ::Event::WindowEvent {
+                        window_id: ::WindowId(::platform::WindowId::Wayland(make_wid(&window))),
+                        event: ::WindowEvent::Closed
+                    }
+                );
+
+            }
         }
     }
 

src/platform/linux/wayland/mod.rs

@@ -10,6 +10,7 @@ use self::event_loop::EventsLoopSink;
 
 extern crate wayland_kbd;
 extern crate wayland_window;
+extern crate wayland_protocols;
 extern crate tempfile;
 
 mod context;

src/platform/linux/wayland/window.rs

@@ -1,9 +1,8 @@
-use std::fs::File;
 use std::sync::{Arc, Mutex};
 use std::sync::atomic::AtomicBool;
 
 use wayland_client::{EventQueue, EventQueueHandle, Proxy};
-use wayland_client::protocol::{wl_display,wl_surface,wl_shell_surface,wl_buffer};
+use wayland_client::protocol::{wl_display,wl_surface};
 
 use {CreationError, MouseCursor, CursorState, WindowAttributes};
 use platform::MonitorId as PlatformMonitorId;
@@ -40,26 +39,16 @@ impl Window {
     {
         let (width, height) = attributes.dimensions.unwrap_or((800,600));
 
-        let (surface, decorated, buffer, tmpfile) = ctxt.create_window::<DecoratedHandler>(width, height);
+        let (surface, decorated) = ctxt.create_window::<DecoratedHandler>(width, height);
 
         // init DecoratedSurface
         let (evq, cleanup_signal) = evlp.get_window_init();
         let decorated_id = {
             let mut evq_guard = evq.lock().unwrap();
-            // create a handler to clean up initial buffer
-            let initial_buffer_handler_id = evq_guard.add_handler(InitialBufferHandler::new());
-            // register the buffer to it
-            evq_guard.register::<_, InitialBufferHandler>(&buffer, initial_buffer_handler_id);
             // store the DecoratedSurface handler
             let decorated_id = evq_guard.add_handler_with_init(decorated);
             {
                 let mut state = evq_guard.state();
-                {
-                    // store the buffer and tempfile in the handler, to be cleanded up at the right
-                    // time
-                    let initial_buffer_h = state.get_mut_handler::<InitialBufferHandler>(initial_buffer_handler_id);
-                    initial_buffer_h.initial_buffer = Some((buffer, tmpfile));
-                }
                 // initialize the DecoratedHandler
                 let decorated = state.get_mut_handler::<DecoratedSurface<DecoratedHandler>>(decorated_id);
                 *(decorated.handler()) = Some(DecoratedHandler::new());
@@ -67,11 +56,7 @@ impl Window {
                 // set fullscreen if necessary
                 if let Some(PlatformMonitorId::Wayland(ref monitor_id)) = attributes.monitor {
                     ctxt.with_output(monitor_id.clone(), |output| {
-                        decorated.set_fullscreen(
-                            wl_shell_surface::FullscreenMethod::Default,
-                            0,
-                            Some(output)
-                        )
+                        decorated.set_fullscreen(Some(output))
                     });
                 } else if attributes.decorations {
                     decorated.set_decorate(true);
@@ -147,6 +132,7 @@ impl Window {
         let mut state = guard.state();
         let mut decorated = state.get_mut_handler::<DecoratedSurface<DecoratedHandler>>(self.decorated_id);
         decorated.resize(x as i32, y as i32);
+        *(self.size.lock().unwrap()) = (x, y);
     }
 
     #[inline]
@@ -194,50 +180,38 @@ impl Drop for Window {
 }
 
 pub struct DecoratedHandler {
-    newsize: Option<(u32, u32)>
+    newsize: Option<(u32, u32)>,
+    closed: bool,
 }
 
 impl DecoratedHandler {
-    fn new() -> DecoratedHandler { DecoratedHandler { newsize: None }}
+    fn new() -> DecoratedHandler {
+        DecoratedHandler {
+            newsize: None,
+            closed: false,
+        }
+    }
 
     pub fn take_newsize(&mut self) -> Option<(u32, u32)> {
         self.newsize.take()
     }
+
+    pub fn is_closed(&self) -> bool { self.closed }
 }
 
 impl wayland_window::Handler for DecoratedHandler {
     fn configure(&mut self,
                  _: &mut EventQueueHandle,
-                 _: wl_shell_surface::Resize,
+                 _: wayland_window::Configure,
                  width: i32, height: i32)
     {
         use std::cmp::max;
         self.newsize = Some((max(width,1) as u32, max(height,1) as u32));
     }
-}
 
-// a handler to release the ressources acquired to draw the initial white screen as soon as
-// the compositor does not use them any more
-
-pub struct InitialBufferHandler {
-    initial_buffer: Option<(wl_buffer::WlBuffer, File)>
-}
-
-impl InitialBufferHandler {
-    fn new() -> InitialBufferHandler {
-        InitialBufferHandler {
-            initial_buffer: None,
-        }
+    fn close(&mut self, _: &mut EventQueueHandle) {
+        self.closed = true;
     }
 }
 
 
-impl wl_buffer::Handler for InitialBufferHandler {
-    fn release(&mut self, _: &mut EventQueueHandle, buffer: &wl_buffer::WlBuffer) {
-        // release the ressources we've acquired for initial white window
-        buffer.destroy();
-        self.initial_buffer = None;
-    }
-}
-
-declare_handler!(InitialBufferHandler, wl_buffer::Handler, wl_buffer::WlBuffer);