Added Idle Inhibitor Features: Signal Inputs & Activity Detection

include/client.hpp

@@ -12,6 +12,7 @@
 
 struct zwp_idle_inhibitor_v1;
 struct zwp_idle_inhibit_manager_v1;
+struct ext_idle_notifier_v1;
 
 namespace waybar {
 
@@ -27,6 +28,7 @@ class Client {
   struct wl_registry *registry = nullptr;
   struct zxdg_output_manager_v1 *xdg_output_manager = nullptr;
   struct zwp_idle_inhibit_manager_v1 *idle_inhibit_manager = nullptr;
+  struct ext_idle_notifier_v1 *idle_notifier = nullptr;
   std::vector<std::unique_ptr<Bar>> bars;
   Config config;
   std::string bar_id;

include/modules/idle_inhibitor.hpp

@@ -6,25 +6,35 @@
 #include "bar.hpp"
 #include "client.hpp"
 
+struct ext_idle_notification_v1;
+
 namespace waybar::modules {
 
 class IdleInhibitor : public ALabel {
   sigc::connection timeout_;
+  ext_idle_notification_v1* idle_notification_;
+  uint32_t idle_timeout_ms_;
 
  public:
   IdleInhibitor(const std::string&, const waybar::Bar&, const Json::Value&);
   virtual ~IdleInhibitor();
   auto update() -> void override;
+  auto refresh(int) -> void override;
   static std::list<waybar::AModule*> modules;
   static bool status;
 
  private:
   bool handleToggle(GdkEventButton* const& e) override;
   void toggleStatus();
+  void setupIdleNotification();
+  void teardownIdleNotification();
+  static void handleIdled(void* data, ext_idle_notification_v1* notification);
+  static void handleResumed(void* data, ext_idle_notification_v1* notification);
 
   const Bar& bar_;
   struct zwp_idle_inhibitor_v1* idle_inhibitor_;
   int pid_;
+  bool wait_for_activity_;
 };
 
 }  // namespace waybar::modules

man/waybar-idle-inhibitor.5.scd

@@ -76,6 +76,17 @@ screensaver, also known as "presentation mode".
 	typeof: double ++
 	The number of minutes the inhibition should last.
 
+*wait-for-activity*: ++
+	typeof: bool ++
+	default: *false* ++
+	When enabled, the idle inhibitor remains active as long as there is keyboard or mouse activity on the bar. If there is no activity for the duration specified in *timeout*, the inhibitor will automatically toggle off. This option requires *timeout* to be set.
+
+*signal*: ++
+	typeof: integer ++
+	The signal number used to toggle the idle inhibitor externally. ++
+	The number is valid between 1 and N, where *SIGRTMIN+N* = *SIGRTMAX*. ++
+	Use `pkill -SIGRTMIN+N waybar` to toggle the idle inhibitor from scripts or keybindings.
+
 *tooltip*: ++
 	typeof: bool ++
 	default: true ++
@@ -115,17 +126,46 @@ screensaver, also known as "presentation mode".
 
 # EXAMPLES
 
+Basic usage with timeout:
+
 ```
 "idle_inhibitor": {
 	"format": "{icon}",
 	"format-icons": {
-		"activated": "",
-		"deactivated": ""
+		"activated": "",
+		"deactivated": ""
 	},
 	"timeout": 30.5
 }
 ```
 
+With external control via signals (can be toggled with `pkill -SIGRTMIN+8 waybar`):
+
+```
+"idle_inhibitor": {
+	"format": "{icon}",
+	"format-icons": {
+		"activated": "",
+		"deactivated": ""
+	},
+	"signal": 8
+}
+```
+
+With wait-for-activity feature:
+
+```
+"idle_inhibitor": {
+	"format": "{icon}",
+	"format-icons": {
+		"activated": "",
+		"deactivated": ""
+	},
+	"timeout": 5.0,
+	"wait-for-activity": true
+}
+```
+
 # STYLE
 
 - *#idle_inhibitor*

protocol/ext-idle-notify-v1.xml

@@ -0,0 +1,131 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<protocol name="ext_idle_notify_v1">
+  <copyright>
+    Copyright © 2015 Martin Gräßlin
+    Copyright © 2022 Simon Ser
+
+    Permission is hereby granted, free of charge, to any person obtaining a
+    copy of this software and associated documentation files (the "Software"),
+    to deal in the Software without restriction, including without limitation
+    the rights to use, copy, modify, merge, publish, distribute, sublicense,
+    and/or sell copies of the Software, and to permit persons to whom the
+    Software is furnished to do so, subject to the following conditions:
+
+    The above copyright notice and this permission notice (including the next
+    paragraph) shall be included in all copies or substantial portions of the
+    Software.
+
+    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+    THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+    FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+    DEALINGS IN THE SOFTWARE.
+  </copyright>
+
+  <interface name="ext_idle_notifier_v1" version="2">
+    <description summary="idle notification manager">
+      This interface allows clients to monitor user idle status.
+
+      After binding to this global, clients can create ext_idle_notification_v1
+      objects to get notified when the user is idle for a given amount of time.
+    </description>
+
+    <request name="destroy" type="destructor">
+      <description summary="destroy the manager">
+        Destroy the manager object. All objects created via this interface
+        remain valid.
+      </description>
+    </request>
+
+    <request name="get_idle_notification">
+      <description summary="create a notification object">
+        Create a new idle notification object.
+
+        The notification object has a minimum timeout duration and is tied to a
+        seat. The client will be notified if the seat is inactive for at least
+        the provided timeout. See ext_idle_notification_v1 for more details.
+
+        A zero timeout is valid and means the client wants to be notified as
+        soon as possible when the seat is inactive.
+      </description>
+      <arg name="id" type="new_id" interface="ext_idle_notification_v1"/>
+      <arg name="timeout" type="uint" summary="minimum idle timeout in msec"/>
+      <arg name="seat" type="object" interface="wl_seat"/>
+    </request>
+
+    <!-- Version 2 additions -->
+
+    <request name="get_input_idle_notification" since="2">
+      <description summary="create a notification object">
+        Create a new idle notification object to track input from the
+        user, such as keyboard and mouse movement. Because this object is
+        meant to track user input alone, it ignores idle inhibitors.
+
+        The notification object has a minimum timeout duration and is tied to a
+        seat. The client will be notified if the seat is inactive for at least
+        the provided timeout. See ext_idle_notification_v1 for more details.
+
+        A zero timeout is valid and means the client wants to be notified as
+        soon as possible when the seat is inactive.
+      </description>
+      <arg name="id" type="new_id" interface="ext_idle_notification_v1"/>
+      <arg name="timeout" type="uint" summary="minimum idle timeout in msec"/>
+      <arg name="seat" type="object" interface="wl_seat"/>
+    </request>
+
+  </interface>
+
+  <interface name="ext_idle_notification_v1" version="2">
+    <description summary="idle notification">
+      This interface is used by the compositor to send idle notification events
+      to clients.
+
+      Initially the notification object is not idle. The notification object
+      becomes idle when no user activity has happened for at least the timeout
+      duration, starting from the creation of the notification object. User
+      activity may include input events or a presence sensor, but is
+      compositor-specific.
+
+      How this notification responds to idle inhibitors depends on how
+      it was constructed. If constructed from the
+      get_idle_notification request, then if an idle inhibitor is
+      active (e.g. another client has created a zwp_idle_inhibitor_v1
+      on a visible surface), the compositor must not make the
+      notification object idle. However, if constructed from the
+      get_input_idle_notification request, then idle inhibitors are
+      ignored, and only input from the user, e.g. from a keyboard or
+      mouse, counts as activity.
+
+      When the notification object becomes idle, an idled event is sent. When
+      user activity starts again, the notification object stops being idle,
+      a resumed event is sent and the timeout is restarted.
+    </description>
+
+    <request name="destroy" type="destructor">
+      <description summary="destroy the notification object">
+        Destroy the notification object.
+      </description>
+    </request>
+
+    <event name="idled">
+      <description summary="notification object is idle">
+        This event is sent when the notification object becomes idle.
+
+        It's a compositor protocol error to send this event twice without a
+        resumed event in-between.
+      </description>
+    </event>
+
+    <event name="resumed">
+      <description summary="notification object is no longer idle">
+        This event is sent when the notification object stops being idle.
+
+        It's a compositor protocol error to send this event twice without an
+        idled event in-between. It's a compositor protocol error to send this
+        event prior to any idled event.
+      </description>
+    </event>
+  </interface>
+</protocol>

protocol/meson.build

@@ -29,6 +29,7 @@ client_protocols = [
 	['river-status-unstable-v1.xml'],
 	['river-control-unstable-v1.xml'],
 	['dwl-ipc-unstable-v2.xml'],
+	['ext-idle-notify-v1.xml'],
 ]
 
 if wayland_protos.version().version_compare('>=1.39')

src/client.cpp

@@ -3,10 +3,12 @@
 #include <gtk-layer-shell.h>
 #include <spdlog/spdlog.h>
 
+#include <algorithm>
 #include <iostream>
 #include <utility>
 
 #include "gtkmm/icontheme.h"
+#include "ext-idle-notify-v1-client-protocol.h"
 #include "idle-inhibit-unstable-v1-client-protocol.h"
 #include "util/clara.hpp"
 #include "util/format.hpp"
@@ -26,6 +28,12 @@ void waybar::Client::handleGlobal(void *data, struct wl_registry *registry, uint
   } else if (strcmp(interface, zwp_idle_inhibit_manager_v1_interface.name) == 0) {
     client->idle_inhibit_manager = static_cast<struct zwp_idle_inhibit_manager_v1 *>(
         wl_registry_bind(registry, name, &zwp_idle_inhibit_manager_v1_interface, 1));
+  } else if (strcmp(interface, ext_idle_notifier_v1_interface.name) == 0) {
+    // Bind version 2 if available (for get_input_idle_notification), otherwise version 1
+    auto bind_version = std::min(version, 2u);
+    client->idle_notifier = static_cast<struct ext_idle_notifier_v1 *>(
+        wl_registry_bind(registry, name, &ext_idle_notifier_v1_interface, bind_version));
+    spdlog::debug("Bound ext-idle-notifier-v1 at version {}", bind_version);
   }
 }