simple-im: add support for unicode input

jay-config/src/_private/client.rs

@@ -1040,6 +1040,10 @@ impl ConfigClient {
         self.send(&ClientMessage::SeatReloadSimpleIm { seat });
     }
 
+    pub fn seat_enable_unicode_input(&self, seat: Seat) {
+        self.send(&ClientMessage::SeatEnableUnicodeInput { seat });
+    }
+
     pub fn set_show_float_pin_icon(&self, show: bool) {
         self.send(&ClientMessage::SetShowFloatPinIcon { show });
     }

jay-config/src/_private/ipc.rs

@@ -798,6 +798,9 @@ pub enum ClientMessage<'a> {
     SeatReloadSimpleIm {
         seat: Seat,
     },
+    SeatEnableUnicodeInput {
+        seat: Seat,
+    },
 }
 
 #[derive(Serialize, Deserialize, Debug)]

jay-config/src/input.rs

@@ -631,6 +631,13 @@ impl Seat {
     pub fn reload_simple_im(self) {
         get!().seat_reload_simple_im(self);
     }
+
+    /// Enables Unicode input in the simple, XCompose based input method.
+    ///
+    /// This has no effect if the simple IM is not currently active.
+    pub fn enable_unicode_input(self) {
+        get!().seat_enable_unicode_input(self);
+    }
 }
 
 /// A focus-follows-mouse mode.