wayland: Implement cosmic-a11y-v1

src/wayland/handlers/a11y.rs

@@ -0,0 +1,38 @@
+use crate::{
+    state::State,
+    wayland::protocols::a11y::{delegate_a11y, A11yHandler, A11yState},
+};
+
+impl A11yHandler for State {
+    fn a11y_state(&mut self) -> &mut A11yState {
+        &mut self.common.a11y_state
+    }
+
+    fn request_screen_magnifier(&mut self, enabled: bool) {
+        let mut shell = self.common.shell.write().unwrap();
+
+        if shell
+            .zoom_state()
+            .is_some_and(|state| state.current_level() != 1.0)
+            != enabled
+        {
+            let seat = shell.seats.last_active().clone();
+            let level = if enabled {
+                self.common.config.dynamic_conf.zoom_state().last_level
+            } else {
+                1.0
+            };
+            let zoom_config = &self.common.config.cosmic_conf.accessibility_zoom;
+
+            shell.trigger_zoom(
+                &seat,
+                level,
+                zoom_config,
+                true,
+                &self.common.event_loop_handle,
+            );
+        }
+    }
+}
+
+delegate_a11y!(State);