Use cosmic-keymap-unstable-v1

src/keyboard_layout_wayland.rs

@@ -0,0 +1,157 @@
+use cctk::{
+    cosmic_protocols::keyboard_layout::v1::client::zcosmic_keyboard_layout_v1::ZcosmicKeyboardLayoutV1,
+    keyboard_layout::{KeyboardLayoutHandler, KeyboardLayoutState},
+    sctk::{
+        self,
+        registry::{ProvidesRegistryState, RegistryState},
+        seat::{Capability, SeatHandler, SeatState},
+    },
+    wayland_client::{
+        Connection, QueueHandle, delegate_noop,
+        globals::registry_queue_init,
+        protocol::{wl_keyboard, wl_seat},
+    },
+};
+use cosmic::iced;
+use cosmic::iced::futures::{SinkExt, channel::mpsc, executor::block_on};
+use std::{hash::Hash, thread};
+
+#[derive(Clone, Debug)]
+pub enum Event {
+    KeyboardLayout(ZcosmicKeyboardLayoutV1),
+    Group(usize),
+}
+
+pub fn subscription(connection: Connection) -> iced::Subscription<Event> {
+    #[derive(Clone)]
+    struct WaylandSubscription(Connection);
+    impl Hash for WaylandSubscription {
+        fn hash<H: std::hash::Hasher>(&self, state: &mut H) {
+            self.0.backend().display_id().hash(state);
+        }
+    }
+    iced::Subscription::run_with(
+        WaylandSubscription(connection),
+        |WaylandSubscription(connection)| {
+            let connection = connection.clone();
+            iced::stream::channel(8, move |sender| async move {
+                thread::spawn(move || thread(connection, sender));
+            })
+        },
+    )
+}
+
+struct Keyboard {
+    seat: wl_seat::WlSeat,
+    keyboard_layout: ZcosmicKeyboardLayoutV1,
+}
+
+impl Drop for Keyboard {
+    fn drop(&mut self) {
+        self.keyboard_layout.destroy();
+    }
+}
+
+struct AppData {
+    seat_state: SeatState,
+    registry_state: RegistryState,
+    keyboard_layout_state: KeyboardLayoutState,
+    keyboard: Option<Keyboard>,
+    sender: mpsc::Sender<Event>,
+}
+
+impl KeyboardLayoutHandler for AppData {
+    fn group(
+        &mut self,
+        _conn: &Connection,
+        _qh: &QueueHandle<Self>,
+        _keyboard: &wl_keyboard::WlKeyboard,
+        _keyboard_layout: &ZcosmicKeyboardLayoutV1,
+        group: u32,
+    ) {
+        let _ = block_on(self.sender.send(Event::Group(group as usize)));
+    }
+}
+
+impl ProvidesRegistryState for AppData {
+    fn registry(&mut self) -> &mut RegistryState {
+        &mut self.registry_state
+    }
+
+    sctk::registry_handlers![SeatState,];
+}
+
+impl SeatHandler for AppData {
+    fn seat_state(&mut self) -> &mut SeatState {
+        &mut self.seat_state
+    }
+
+    fn new_seat(&mut self, _: &Connection, _: &QueueHandle<Self>, _: wl_seat::WlSeat) {}
+
+    fn new_capability(
+        &mut self,
+        _conn: &Connection,
+        qh: &QueueHandle<Self>,
+        seat: wl_seat::WlSeat,
+        capability: Capability,
+    ) {
+        if capability == Capability::Keyboard && self.keyboard.is_none() {
+            let keyboard = seat.get_keyboard(qh, ());
+            let keyboard_layout = self
+                .keyboard_layout_state
+                .get_keyboard_layout(&keyboard, qh);
+            keyboard.release();
+
+            if let Some(keyboard_layout) = keyboard_layout {
+                let _ = block_on(
+                    self.sender
+                        .send(Event::KeyboardLayout(keyboard_layout.clone())),
+                );
+                self.keyboard = Some(Keyboard {
+                    seat,
+                    keyboard_layout,
+                });
+            } else {
+                keyboard.release();
+            }
+        }
+    }
+
+    fn remove_capability(
+        &mut self,
+        _conn: &Connection,
+        _: &QueueHandle<Self>,
+        seat: wl_seat::WlSeat,
+        _capability: Capability,
+    ) {
+        self.keyboard.take_if(|x| x.seat == seat);
+    }
+
+    fn remove_seat(&mut self, _: &Connection, _: &QueueHandle<Self>, seat: wl_seat::WlSeat) {
+        self.keyboard.take_if(|x| x.seat == seat);
+    }
+}
+
+fn thread(conn: Connection, sender: mpsc::Sender<Event>) {
+    let (globals, mut event_queue) = registry_queue_init(&conn).unwrap();
+    let qh = event_queue.handle();
+    let registry_state = RegistryState::new(&globals);
+    let seat_state = SeatState::new(&globals, &qh);
+    let keyboard_layout_state = KeyboardLayoutState::new(&registry_state, &qh);
+
+    let mut app_data = AppData {
+        seat_state,
+        registry_state,
+        keyboard_layout_state,
+        keyboard: None,
+        sender,
+    };
+    loop {
+        event_queue.blocking_dispatch(&mut app_data).unwrap();
+    }
+}
+
+sctk::delegate_registry!(AppData);
+sctk::delegate_seat!(AppData);
+cctk::delegate_keyboard_layout!(AppData);
+delegate_noop!(AppData: ignore wl_keyboard::WlKeyboard);