Implement compositor support for swaylock

This makes swaylock more or less work.

1 files changed, 17 insertions, 2 deletions

diff --git a/sway/extensions.c b/sway/extensions.c
index 1ca66468..5e09bdbb 100644
--- a/sway/extensions.c
+++ b/sway/extensions.c
@@ -89,12 +89,27 @@ static void desktop_unlock(struct wl_client *client, struct wl_resource *resourc
 }
 
 static void set_lock_surface(struct wl_client *client, struct wl_resource *resource,
-                struct wl_resource *output, struct wl_resource *surface) {
-        sway_log(L_ERROR, "set_lock_surface is not currently supported");
+                struct wl_resource *_output, struct wl_resource *surface) {
+        swayc_t *output = swayc_by_handle(wlc_handle_from_wl_output_resource(_output));
+        swayc_t *view = swayc_by_handle(wlc_handle_from_wl_surface_resource(surface));
+        if (view && output) {
+                swayc_t *workspace = output->focused;
+                if (!swayc_is_child_of(view, workspace)) {
+                        move_container_to(view, workspace);
+                }
+                wlc_view_set_state(view->handle, WLC_BIT_FULLSCREEN, true);
+                workspace->fullscreen = view;
+                desktop_shell.is_locked = true;
+                set_focused_container(view);
+                arrange_windows(view, -1, -1);
+        } else {
+                sway_log(L_ERROR, "Attempted to set lock surface to non-view");
+        }
 }
 
 static void unlock(struct wl_client *client, struct wl_resource *resource) {
         sway_log(L_ERROR, "unlock is not currently supported");
+        // This isn't really necessary, we just unlock when the client exits.
 }
 
 static void set_grab_surface(struct wl_client *client, struct wl_resource *resource, struct wl_resource *surface) {