simple_window: Test xdg-activation

examples/simple_window.rs

@@ -3,9 +3,10 @@ use std::{convert::TryInto, time::Duration};
 use smithay_client_toolkit::reexports::calloop::{EventLoop, LoopHandle};
 use smithay_client_toolkit::reexports::calloop_wayland_source::WaylandSource;
 use smithay_client_toolkit::{
+    activation::{ActivationHandler, ActivationState},
     compositor::{CompositorHandler, CompositorState},
-    delegate_compositor, delegate_keyboard, delegate_output, delegate_pointer, delegate_registry,
-    delegate_seat, delegate_shm, delegate_xdg_shell, delegate_xdg_window,
+    delegate_activation, delegate_compositor, delegate_keyboard, delegate_output, delegate_pointer,
+    delegate_registry, delegate_seat, delegate_shm, delegate_xdg_shell, delegate_xdg_window,
     output::{OutputHandler, OutputState},
     registry::{ProvidesRegistryState, RegistryState},
     registry_handlers,
@@ -54,6 +55,8 @@ fn main() {
     // Since we are not using the GPU in this example, we use wl_shm to allow software rendering to a buffer
     // we share with the compositor process.
     let shm = Shm::bind(&globals, &qh).expect("wl shm is not available.");
+    // If the compositor supports xdg-activation it probably wants us to use it to get focus
+    let xdg_activation = ActivationState::bind(&globals, &qh).ok();
 
     // A window is created from a surface.
     let surface = compositor.create_surface(&qh);
@@ -73,6 +76,18 @@ fn main() {
     // the correct options.
     window.commit();
 
+    // To request focus, we first need to request a token
+    if let Some(activation) = xdg_activation.as_ref() {
+        activation.request_token(
+            &qh,
+            (
+                None,
+                Some(window.wl_surface().clone()),
+                Some(String::from("io.github.smithay.client-toolkit.SimpleWindow")),
+            ),
+        )
+    }
+
     // We don't know how large the window will be yet, so lets assume the minimum size we suggested for the
     // initial memory allocation.
     let pool = SlotPool::new(256 * 256 * 4, &shm).expect("Failed to create pool");
@@ -84,6 +99,7 @@ fn main() {
         seat_state: SeatState::new(&globals, &qh),
         output_state: OutputState::new(&globals, &qh),
         shm,
+        xdg_activation,
 
         exit: false,
         first_configure: true,
@@ -115,6 +131,7 @@ struct SimpleWindow {
     seat_state: SeatState,
     output_state: OutputState,
     shm: Shm,
+    xdg_activation: Option<ActivationState>,
 
     exit: bool,
     first_configure: bool,
@@ -219,6 +236,18 @@ impl WindowHandler for SimpleWindow {
     }
 }
 
+impl ActivationHandler for SimpleWindow {
+    type RequestData =
+        (Option<(wl_seat::WlSeat, u32)>, Option<wl_surface::WlSurface>, Option<String>);
+
+    fn new_token(&mut self, _data: &Self::RequestData, token: String) {
+        self.xdg_activation
+            .as_ref()
+            .unwrap()
+            .activate::<SimpleWindow>(self.window.wl_surface(), token);
+    }
+}
+
 impl SeatHandler for SimpleWindow {
     fn seat_state(&mut self) -> &mut SeatState {
         &mut self.seat_state
@@ -464,6 +493,10 @@ delegate_pointer!(SimpleWindow);
 
 delegate_xdg_shell!(SimpleWindow);
 delegate_xdg_window!(SimpleWindow);
+delegate_activation!(
+    SimpleWindow,
+    (Option<(wl_seat::WlSeat, u32)>, Option<wl_surface::WlSurface>, Option<String>)
+);
 
 delegate_registry!(SimpleWindow);