feat: add idle protocol to avoid update workspace when idle

include/client.hpp

@@ -9,6 +9,7 @@
 #include <wayland-client.h>
 
 #include "wlr-layer-shell-unstable-v1-client-protocol.h"
+#include "idle-client-protocol.h"
 
 #include "util/ptr_vec.hpp"
 
@@ -28,6 +29,8 @@ namespace waybar {
     struct wl_display *wlDisplay;
     struct wl_registry *registry;
     struct zwlr_layer_shell_v1 *layer_shell;
+    struct org_kde_kwin_idle *idle_manager;
+    struct wl_seat *seat;
     util::ptr_vec<Bar> bars;
 
     struct {

include/modules/workspaces.hpp

@@ -12,16 +12,18 @@ namespace waybar::modules {
     public:
       WorkspaceSelector(waybar::Bar &bar);
       auto update() -> void;
+      void updateThread();
       operator Gtk::Widget &();
+      util::SleeperThread *thread;
     private:
       void _addWorkspace(Json::Value node);
       Json::Value _getWorkspaces();
       Bar &_bar;
       Gtk::Box *_box;
       std::unordered_map<int, Gtk::Button> _buttons;
-      util::SleeperThread _thread;
       int _ipcSocketfd;
       int _ipcEventSocketfd;
+      struct org_kde_kwin_idle_timeout *_idle_timer;
   };
 
 }

src/client.cpp

@@ -12,6 +12,12 @@ static void handle_global(void *data, struct wl_registry *registry,
     *output = (struct wl_output *)wl_registry_bind(registry, name,
       &wl_output_interface, version);
     o->bars.emplace_back(*o, std::move(output));
+  } else if (!strcmp(interface, org_kde_kwin_idle_interface.name)) {
+    o->idle_manager = (org_kde_kwin_idle *)wl_registry_bind(registry, name,
+      &org_kde_kwin_idle_interface, version);
+  } else if (!strcmp(interface, wl_seat_interface.name)) {
+    o->seat = (struct wl_seat *)wl_registry_bind(registry, name,
+      &wl_seat_interface, version);
   }
 }
 

src/modules/workspaces.cpp

@@ -1,9 +1,25 @@
 #include "modules/workspaces.hpp"
-#include "idle-client-protocol.h"
 #include "ipc/client.hpp"
 
+static void handle_idle(void *data, struct org_kde_kwin_idle_timeout *timer) {
+	auto o = reinterpret_cast<waybar::modules::WorkspaceSelector *>(data);
+  if (o->thread) {
+	  delete o->thread;
+  }
+}
+
+static void handle_resume(void *data, struct org_kde_kwin_idle_timeout *timer) {
+	auto o = reinterpret_cast<waybar::modules::WorkspaceSelector *>(data);
+	o->updateThread();
+}
+
+static const struct org_kde_kwin_idle_timeout_listener idle_timer_listener = {
+	.idle = handle_idle,
+	.resumed = handle_resume,
+};
+
 waybar::modules::WorkspaceSelector::WorkspaceSelector(Bar &bar)
-  : _bar(bar), _box(Gtk::manage(new Gtk::Box))
+  : thread(nullptr), _bar(bar), _box(Gtk::manage(new Gtk::Box))
 {
   _box->get_style_context()->add_class("workspace-selector");
   std::string socketPath = get_socketpath();
@@ -12,10 +28,20 @@ waybar::modules::WorkspaceSelector::WorkspaceSelector(Bar &bar)
   const char *subscribe = "[ \"workspace\", \"mode\" ]";
   uint32_t len = strlen(subscribe);
   ipc_single_command(_ipcEventSocketfd, IPC_SUBSCRIBE, subscribe, &len);
-  _thread = [this] {
+  _idle_timer =
+		org_kde_kwin_idle_get_idle_timeout(_bar.client.idle_manager,
+      _bar.client.seat, 10000); // 10 seconds
+  org_kde_kwin_idle_timeout_add_listener(_idle_timer,
+    &idle_timer_listener, this);
+  updateThread();
+}
+
+void waybar::modules::WorkspaceSelector::updateThread()
+{
+  thread = new waybar::util::SleeperThread([this] {
     update();
-    _thread.sleep_for(chrono::milliseconds(250));
-  };
+    thread->sleep_for(waybar::chrono::milliseconds(250));
+  });
 }
 
 auto waybar::modules::WorkspaceSelector::update() -> void