Implement pointer constraints; update to send frame manually

src/wayland/handlers/mod.rs

@@ -10,6 +10,7 @@ pub mod keyboard_shortcuts_inhibit;
 pub mod layer_shell;
 pub mod output;
 pub mod output_configuration;
+pub mod pointer_constraints;
 pub mod pointer_gestures;
 pub mod presentation;
 pub mod primary_selection;

src/wayland/handlers/pointer_constraints.rs

@@ -0,0 +1,29 @@
+// SPDX-License-Identifier: GPL-3.0-only
+
+use crate::state::State;
+use smithay::{
+    delegate_pointer_constraints,
+    input::pointer::PointerHandle,
+    reexports::wayland_server::protocol::wl_surface::WlSurface,
+    wayland::{
+        pointer_constraints::{with_pointer_constraint, PointerConstraintsHandler},
+        seat::WaylandFocus,
+    },
+};
+
+impl PointerConstraintsHandler for State {
+    fn new_constraint(&mut self, surface: &WlSurface, pointer: &PointerHandle<Self>) {
+        // XXX region
+        if pointer
+            .current_focus()
+            .and_then(|x| x.wl_surface())
+            .as_ref()
+            == Some(surface)
+        {
+            with_pointer_constraint(surface, pointer, |constraint| {
+                constraint.unwrap().activate();
+            });
+        }
+    }
+}
+delegate_pointer_constraints!(State);