hrt: partially hook up output layout change listener

stumpwm · Oct 19, 2024 · 88ab22d · 88ab22d
1 parent 0178186
commit 88ab22d
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Showing 4 changed files with 13 additions and 1 deletion.
diff --git a/heart/include/hrt/hrt_output.h b/heart/include/hrt/hrt_output.h
@@ -22,6 +22,7 @@ struct hrt_output {
 struct hrt_output_callbacks {
   void (*output_added)(struct hrt_output *output);
   void (*output_removed)(struct hrt_output *output);
+  void (*output_layout_changed)(struct hrt_output *output);
 };
 
 bool hrt_output_init(struct hrt_server *server, const struct hrt_output_callbacks *callbacks);

diff --git a/heart/include/hrt/hrt_server.h b/heart/include/hrt/hrt_server.h
@@ -30,6 +30,7 @@ struct hrt_server {
   struct wl_listener new_output;
   struct wlr_output_manager_v1 *output_manager;
   struct wlr_output_layout *output_layout;
+  struct wl_listener output_layout_changed;
   struct wl_listener output_manager_apply;
   struct wl_listener output_manager_test;
   struct wl_listener output_manager_destroy;

diff --git a/heart/src/output.c b/heart/src/output.c
@@ -127,6 +127,10 @@ static void handle_output_manager_test(struct wl_listener *listener, void *data)
 
 }
 
+static void handle_output_layout_changed(struct wl_listener *listener, void *data) {
+  wlr_log(WLR_DEBUG, "Output Layout changed");
+}
+
 bool hrt_output_init(struct hrt_server *server, const struct hrt_output_callbacks *callbacks) {
   server->output_callback = callbacks;
   server->new_output.notify = handle_new_output;
@@ -136,6 +140,9 @@ bool hrt_output_init(struct hrt_server *server, const struct hrt_output_callback
   server->scene = wlr_scene_create();
   server->scene_layout = wlr_scene_attach_output_layout(server->scene, server->output_layout);
 
+  server->output_layout_changed.notify = handle_output_layout_changed;
+  wl_signal_add(&server->output_layout->events.change, &server->output_layout_changed);
+
   server->output_manager = wlr_output_manager_v1_create(server->wl_display);
 
   if(!server->output_manager) {
@@ -156,6 +163,7 @@ bool hrt_output_init(struct hrt_server *server, const struct hrt_output_callback
 
 void hrt_output_destroy(struct hrt_server *server) {
   wlr_scene_node_destroy(&server->scene->tree.node);
+  wl_list_remove(&server->output_layout_changed.link);
   // The output layout  gets destroyed when the display does:
   // wlr_output_layout_destroy(server->output_layout);
 }
diff --git a/lisp/bindings/hrt-bindings.lisp b/lisp/bindings/hrt-bindings.lisp
@@ -122,7 +122,8 @@ See themes section of man xcursor(3) to find where to find valid cursor names."
 
 (cffi:defcstruct hrt-output-callbacks
   (output-added :pointer #| function ptr void (struct hrt_output *) |#)
-  (output-removed :pointer #| function ptr void (struct hrt_output *) |#))
+  (output-removed :pointer #| function ptr void (struct hrt_output *) |#)
+  (output-layout-changed :pointer #| function ptr void (struct hrt_output *) |#))
 
 (cffi:defcfun ("hrt_output_init" hrt-output-init) :bool
   (server (:pointer (:struct hrt-server)))
@@ -170,6 +171,7 @@ set the width and height of views."
   (new-output (:struct wl-listener))
   (output-manager :pointer #| (:struct wlr-output-manager-v1) |# )
   (output-layout :pointer #| (:struct wlr-output-layout) |# )
+  (output-layout-changed (:struct wl-listener))
   (output-manager-apply (:struct wl-listener))
   (output-manager-test (:struct wl-listener))
   (output-manager-destroy (:struct wl-listener))