Refine shell status controls and glass rendering; defer cursor redraw safely

compositor/src/handlers/compositor.rs

@@ -63,6 +63,10 @@ impl CompositorHandler for Ferese {
     }
 
     fn destroyed(&mut self, surface: &WlSurface) {
+        // A removed popup changes the backdrop even without a final buffer
+        // commit. Invalidate expanded sampling regions as well as its bounds.
+        self.invalidate_material_scene();
+        crate::backends::direct::render_all(self);
         if self.idle_inhibitors.remove(surface).is_some() {
             self.idle_notifier_state
                 .set_is_inhibited(!self.idle_inhibitors.is_empty());

compositor/src/handlers/mod.rs

@@ -59,7 +59,10 @@ impl SeatHandler for Ferese {
                 .or_insert_with(|| crate::cursor::load_named_cursor(&self.cursor_theme, *icon));
         }
         self.cursor_status = image;
-        crate::backends::direct::render_all(self);
+        // Pointer focus transitions invoke this with the pointer lock held.
+        // render_all -> cursor_elements -> current_location would try to
+        // acquire that same lock, freezing the entire compositor thread.
+        self.cursor_redraw_pending = true;
     }
 
     fn focus_changed(&mut self, seat: &Seat<Self>, focused: Option<&WlSurface>) {

compositor/src/handlers/xdg_shell.rs

@@ -272,6 +272,10 @@ impl XdgShellHandler for Ferese {
         }
         if let Some(keyboard) = seat.get_keyboard() {
             keyboard.set_grab(self, PopupKeyboardGrab::new(&popup_grab), serial);
+            // Focus the popup immediately, rather than waiting for its first
+            // key event. Shell clients use focus to initialize popup effects,
+            // and Escape must be delivered to the popup from the outset.
+            keyboard.set_focus(self, popup_grab.current_grab(), serial);
         }
     }
 }