chore: v0.9.6

Use the correct battery status when multiple batteries are present

.github/FUNDING.yml

@@ -1,3 +1,4 @@
 # These are supported funding model platforms
 
+github: Alexays
 custom: https://paypal.me/ARouillard

.github/workflows/freebsd.yml

@@ -0,0 +1,22 @@
+name: freebsd
+
+on: [ push, pull_request ]
+
+jobs:
+  clang:
+    runs-on: macos-latest # until https://github.com/actions/runner/issues/385
+    steps:
+    - uses: actions/checkout@v2
+    - name: Test in FreeBSD VM
+      uses: vmactions/freebsd-vm@v0.0.9 # aka FreeBSD 12.2
+      with:
+        usesh: true
+        prepare: |
+          export CPPFLAGS=-isystem/usr/local/include LDFLAGS=-L/usr/local/lib # sndio
+          sed -i '' 's/quarterly/latest/' /etc/pkg/FreeBSD.conf
+          pkg install -y git #  subprojects/date
+          pkg install -y gtk-layer-shell gtkmm30 jsoncpp libdbusmenu sndio \
+               libfmt libmpdclient libudev-devd meson pkgconf pulseaudio scdoc spdlog
+        run: |
+          meson build -Dman-pages=enabled
+          ninja -C build

.travis.yml

@@ -1,4 +1,4 @@
-sudo: false
+language: cpp
 
 services:
     - docker
@@ -11,6 +11,7 @@ env:
     - distro: archlinux
     - distro: fedora
     - distro: alpine
+    - distro: opensuse
 
 before_install:
     - docker pull alexays/waybar:${distro}
@@ -21,3 +22,17 @@ script:
     - echo ADD . /root >> Dockerfile
     - docker build -t waybar .
     - docker run waybar /bin/sh -c "cd /root && meson build -Dman-pages=enabled && ninja -C build"
+
+jobs:
+  include:
+    - os: freebsd
+      compiler: clang
+      env:
+      before_install:
+        - export CPPFLAGS+=-isystem/usr/local/include LDFLAGS+=-L/usr/local/lib # sndio
+        - sudo sed -i '' 's/quarterly/latest/' /etc/pkg/FreeBSD.conf
+        - sudo pkg install -y gtk-layer-shell gtkmm30 jsoncpp libdbusmenu sndio
+               libfmt libmpdclient libudev-devd meson pulseaudio scdoc spdlog
+      script:
+        - meson build -Dman-pages=enabled
+        - ninja -C build

Dockerfiles/alpine

@@ -2,4 +2,4 @@
 
 FROM alpine:latest
 
-RUN apk add --no-cache git meson alpine-sdk libinput-dev wayland-dev wayland-protocols mesa-dev libxkbcommon-dev eudev-dev pixman-dev gtkmm3-dev jsoncpp-dev libnl3-dev pulseaudio-dev libmpdclient-dev scdoc
+RUN apk add --no-cache git meson alpine-sdk libinput-dev wayland-dev wayland-protocols mesa-dev libxkbcommon-dev eudev-dev pixman-dev gtkmm3-dev jsoncpp-dev pugixml-dev libnl3-dev pulseaudio-dev libmpdclient-dev sndio-dev scdoc

Dockerfiles/archlinux

@@ -3,4 +3,4 @@
 FROM archlinux/base:latest
 
 RUN pacman -Syu --noconfirm && \
-    pacman -S git meson base-devel libinput wayland wayland-protocols pixman libxkbcommon mesa gtkmm3 jsoncpp scdoc --noconfirm
+    pacman -S git meson base-devel libinput wayland wayland-protocols pixman libxkbcommon mesa gtkmm3 jsoncpp pugixml scdoc libpulse libdbusmenu-gtk3 libmpdclient gobject-introspection --noconfirm

Dockerfiles/debian

@@ -3,5 +3,5 @@
 FROM debian:sid
 
 RUN apt-get update && \
-    apt-get install -y build-essential meson ninja-build git pkg-config libinput10 libinput-dev wayland-protocols libwayland-client0 libwayland-cursor0 libwayland-dev libegl1-mesa-dev libgles2-mesa-dev libgbm-dev libxkbcommon-dev libudev-dev libpixman-1-dev libgtkmm-3.0-dev libjsoncpp-dev scdoc && \
+    apt-get install -y build-essential meson ninja-build git pkg-config libinput10 libpugixml-dev libinput-dev wayland-protocols libwayland-client0 libwayland-cursor0 libwayland-dev libegl1-mesa-dev libgles2-mesa-dev libgbm-dev libxkbcommon-dev libudev-dev libpixman-1-dev libgtkmm-3.0-dev libjsoncpp-dev scdoc libdbusmenu-gtk3-dev libnl-3-dev libnl-genl-3-dev libpulse-dev libmpdclient-dev gobject-introspection libgirepository1.0-dev && \
     apt-get clean

Dockerfiles/fedora

@@ -1,7 +1,7 @@
 # vim: ft=Dockerfile
 
-FROM fedora:30
+FROM fedora:32
 
-RUN dnf install sway meson git libinput-devel wayland-devel wayland-protocols-devel egl-wayland-devel mesa-libEGL-devel mesa-libGLES-devel mesa-libgbm-devel libxkbcommon-devel libudev-devel pixman-devel gtkmm30-devel jsoncpp-devel scdoc -y && \
+RUN dnf install sway meson git libinput-devel wayland-devel wayland-protocols-devel pugixml-devel egl-wayland-devel mesa-libEGL-devel mesa-libGLES-devel mesa-libgbm-devel libxkbcommon-devel libudev-devel pixman-devel gtkmm30-devel jsoncpp-devel scdoc -y && \
     dnf group install "C Development Tools and Libraries" -y && \
     dnf clean all -y

Dockerfiles/opensuse

@@ -4,4 +4,4 @@ FROM opensuse/tumbleweed:latest
 
 RUN zypper -n up && \
     zypper -n install -t pattern devel_C_C++ && \
-    zypper -n install git meson clang libinput10 libinput-devel libwayland-client0 libwayland-cursor0 wayland-protocols-devel wayland-devel Mesa-libEGL-devel Mesa-libGLESv2-devel libgbm-devel libxkbcommon-devel libudev-devel libpixman-1-0-devel gtkmm3-devel jsoncpp-devel scdoc
+    zypper -n install git meson clang libinput10 libinput-devel pugixml-devel libwayland-client0 libwayland-cursor0 wayland-protocols-devel wayland-devel Mesa-libEGL-devel Mesa-libGLESv2-devel libgbm-devel libxkbcommon-devel libudev-devel libpixman-1-0-devel gtkmm3-devel jsoncpp-devel scdoc

Makefile

@@ -1,6 +1,6 @@
 .PHONY: build build-debug run clean default install
 
-default: run
+default: build
 
 build:
 	meson build

README.md

@@ -5,12 +5,13 @@
 [AUR](https://aur.archlinux.org/packages/waybar-git/), [openSUSE](https://build.opensuse.org/package/show/X11:Wayland/waybar), and [Alpine Linux](https://pkgs.alpinelinux.org/packages?name=waybar)<br>
 > *Waybar [examples](https://github.com/Alexays/Waybar/wiki/Examples)*
 
-**Current features**
+#### Current features
 - Sway (Workspaces, Binding mode, Focused window name)
 - Tray [#21](https://github.com/Alexays/Waybar/issues/21)
 - Local time
 - Battery
 - Network
+- Bluetooth
 - Pulseaudio
 - Disk
 - Memory
@@ -21,11 +22,21 @@
 - Multiple output configuration
 - And much more customizations
 
-**Configuration and Styling**
+#### Configuration and Styling
 
 [See the wiki for more details](https://github.com/Alexays/Waybar/wiki).
 
-**How to build**
+### Installation
+
+Waybar is available from a number of Linux distributions:
+
+[![Packaging status](https://repology.org/badge/vertical-allrepos/waybar.svg)](https://repology.org/project/waybar/versions)
+
+An Ubuntu PPA with more recent versions is available
+[here](https://launchpad.net/~nschloe/+archive/ubuntu/waybar).
+
+
+#### Building from source
 
 ```bash
 $ git clone https://github.com/Alexays/Waybar
@@ -43,26 +54,52 @@ $ waybar
 ```
 gtkmm3
 jsoncpp
-libinput
-
 libsigc++
 fmt
 wayland
-wlroots
+chrono-date
+spdlog
 libgtk-3-dev [gtk-layer-shell]
 gobject-introspection [gtk-layer-shell]
 libgirepository1.0-dev [gtk-layer-shell]
 libpulse [Pulseaudio module]
 libnl [Network module]
-sway [Sway modules]
+libappindicator-gtk3 [Tray module]
 libdbusmenu-gtk3 [Tray module]
 libmpdclient [MPD module]
+libsndio [sndio module]
 ```
 
-On Ubuntu 19.10 you can install all the relevant dependencies using this command:
+**Build dependencies**
 
 ```
-sudo apt install libgtkmm-3.0-dev libjsoncpp-dev libinput-dev libsigc++-2.0-dev libpulse-dev libnl-3-dev libdbusmenu-gtk3-dev libnl-genl-3-dev libfmt-dev clang-tidy libmpdclient-dev libwayland-dev libgtk-3-dev gobject-introspection libgirepository1.0-dev scdoc
+cmake
+meson
+scdoc
+wayland-protocols
+```
+
+On Ubuntu you can install all the relevant dependencies using this command (tested with 19.10 and 20.04):
+
+```
+sudo apt install \
+  clang-tidy \
+  gobject-introspection \
+  libdbusmenu-gtk3-dev \
+  libfmt-dev \
+  libgirepository1.0-dev \
+  libgtk-3-dev \
+  libgtkmm-3.0-dev \
+  libinput-dev \
+  libjsoncpp-dev \
+  libmpdclient-dev \
+  libnl-3-dev \
+  libnl-genl-3-dev \
+  libpulse-dev \
+  libsigc++-2.0-dev \
+  libspdlog-dev \
+  libwayland-dev \
+  scdoc
 ```
 
 

include/ALabel.hpp

@@ -10,15 +10,15 @@ namespace waybar {
 class ALabel : public AModule {
  public:
   ALabel(const Json::Value &, const std::string &, const std::string &, const std::string &format,
-         uint16_t interval = 0, bool ellipsize = false);
+         uint16_t interval = 0, bool ellipsize = false, bool enable_click = false, bool enable_scroll = false);
   virtual ~ALabel() = default;
   virtual auto        update() -> void;
   virtual std::string getIcon(uint16_t, const std::string &alt = "", uint16_t max = 0);
+  virtual std::string getIcon(uint16_t, std::vector<std::string> &alts, uint16_t max = 0);
 
  protected:
   Gtk::Label                 label_;
   std::string                format_;
-  std::string                click_param;
   const std::chrono::seconds interval_;
   bool                       alt_ = false;
   std::string                default_format_;

include/AModule.hpp

@@ -4,14 +4,15 @@
 #include <glibmm/markup.h>
 #include <gtkmm/eventbox.h>
 #include <json/json.h>
+
 #include "IModule.hpp"
 
 namespace waybar {
 
 class AModule : public IModule {
  public:
-  AModule(const Json::Value &, const std::string &, const std::string &,
+  AModule(const Json::Value &, const std::string &, const std::string &, bool enable_click = false,
-          bool enable_click = false, bool enable_scroll = false);
+          bool enable_scroll = false);
   virtual ~AModule();
   virtual auto update() -> void;
   virtual      operator Gtk::Widget &();
@@ -24,6 +25,7 @@ class AModule : public IModule {
   SCROLL_DIR getScrollDir(GdkEventScroll *e);
   bool       tooltipEnabled();
 
+  const std::string  name_;
   const Json::Value &config_;
   Gtk::EventBox      event_box_;
 

include/bar.hpp

@@ -7,9 +7,8 @@
 #include <gtkmm/main.h>
 #include <gtkmm/window.h>
 #include <json/json.h>
+
 #include "AModule.hpp"
-#include "idle-inhibit-unstable-v1-client-protocol.h"
-#include "wlr-layer-shell-unstable-v1-client-protocol.h"
 #include "xdg-output-unstable-v1-client-protocol.h"
 
 namespace waybar {
@@ -18,65 +17,66 @@ class Factory;
 struct waybar_output {
   Glib::RefPtr<Gdk::Monitor> monitor;
   std::string                name;
+  std::string                identifier;
 
   std::unique_ptr<struct zxdg_output_v1, decltype(&zxdg_output_v1_destroy)> xdg_output = {
       nullptr, &zxdg_output_v1_destroy};
 };
 
+enum class bar_layer : uint8_t {
+  BOTTOM,
+  TOP,
+  OVERLAY,
+};
+
+struct bar_margins {
+  int top = 0;
+  int right = 0;
+  int bottom = 0;
+  int left = 0;
+};
+
+class BarSurface {
+ protected:
+  BarSurface() = default;
+
+ public:
+  virtual void setExclusiveZone(bool enable) = 0;
+  virtual void setLayer(bar_layer layer) = 0;
+  virtual void setMargins(const struct bar_margins &margins) = 0;
+  virtual void setPosition(const std::string_view &position) = 0;
+  virtual void setSize(uint32_t width, uint32_t height) = 0;
+  virtual void commit(){};
+
+  virtual ~BarSurface() = default;
+};
+
 class Bar {
  public:
   Bar(struct waybar_output *w_output, const Json::Value &);
   Bar(const Bar &) = delete;
   ~Bar() = default;
 
-  auto toggle() -> void;
+  void setVisible(bool visible);
+  void toggle();
   void handleSignal(int);
 
   struct waybar_output *output;
   Json::Value           config;
-  Gtk::Window           window;
   struct wl_surface *   surface;
   bool                  visible = true;
   bool                  vertical = false;
+  Gtk::Window           window;
 
  private:
-  static constexpr const char *MIN_HEIGHT_MSG =
+  void onMap(GdkEventAny *);
-      "Requested height: {} exceeds the minimum height: {} required by the modules";
-  static constexpr const char *MIN_WIDTH_MSG =
-      "Requested width: {} exceeds the minimum width: {} required by the modules";
-  static constexpr const char *BAR_SIZE_MSG =
-      "Bar configured (width: {}, height: {}) for output: {}";
-  static constexpr const char *SIZE_DEFINED =
-      "{} size is defined in the config file so it will stay like that";
-  static void layerSurfaceHandleConfigure(void *, struct zwlr_layer_surface_v1 *, uint32_t,
-                                          uint32_t, uint32_t);
-  static void layerSurfaceHandleClosed(void *, struct zwlr_layer_surface_v1 *);
-
-#ifdef HAVE_GTK_LAYER_SHELL
-  void initGtkLayerShell();
-#endif
-  void onConfigure(GdkEventConfigure *ev);
-  void onRealize();
-  void onMap(GdkEventAny *ev);
-  void setExclusiveZone(uint32_t width, uint32_t height);
-  void setSurfaceSize(uint32_t width, uint32_t height);
   auto setupWidgets() -> void;
   void getModules(const Factory &, const std::string &);
   void setupAltFormatKeyForModule(const std::string &module_name);
   void setupAltFormatKeyForModuleList(const char *module_list_name);
 
-  struct margins {
+  std::unique_ptr<BarSurface>                   surface_impl_;
-    int top = 0;
+  bar_layer                                     layer_;
-    int right = 0;
-    int bottom = 0;
-    int left = 0;
-  } margins_;
-  struct zwlr_layer_surface_v1 *layer_surface_;
-  // use gtk-layer-shell instead of handling layer surfaces directly
-  bool                                          use_gls_ = false;
-  uint32_t                                      width_ = 0;
-  uint32_t                                      height_ = 1;
-  uint8_t                                       anchor_;
   Gtk::Box                                      left_;
   Gtk::Box                                      center_;
   Gtk::Box                                      right_;

include/client.hpp

@@ -6,14 +6,20 @@
 #include <unistd.h>
 #include <wayland-client.h>
 #include <wordexp.h>
+
 #include "bar.hpp"
 
+struct zwlr_layer_shell_v1;
+struct zwp_idle_inhibitor_v1;
+struct zwp_idle_inhibit_manager_v1;
+
 namespace waybar {
 
 class Client {
  public:
   static Client *inst();
   int            main(int argc, char *argv[]);
+  void           reset();
 
   Glib::RefPtr<Gtk::Application>      gtk_app;
   Glib::RefPtr<Gdk::Display>          gdk_display;
@@ -34,15 +40,18 @@ class Client {
   bool                     isValidOutput(const Json::Value &config, struct waybar_output &output);
   auto                     setupConfig(const std::string &config_file) -> void;
   auto                     setupCss(const std::string &css_file) -> void;
-  struct waybar_output &getOutput(void *);
+  struct waybar_output &   getOutput(void *);
   std::vector<Json::Value> getOutputConfigs(struct waybar_output &output);
 
   static void handleGlobal(void *data, struct wl_registry *registry, uint32_t name,
                            const char *interface, uint32_t version);
   static void handleGlobalRemove(void *data, struct wl_registry *registry, uint32_t name);
+  static void handleOutputDone(void *, struct zxdg_output_v1 *);
   static void handleOutputName(void *, struct zxdg_output_v1 *, const char *);
+  static void handleOutputDescription(void *, struct zxdg_output_v1 *, const char *);
   void        handleMonitorAdded(Glib::RefPtr<Gdk::Monitor> monitor);
   void        handleMonitorRemoved(Glib::RefPtr<Gdk::Monitor> monitor);
+  void        handleDeferredMonitorRemoval(Glib::RefPtr<Gdk::Monitor> monitor);
 
   Json::Value                     config_;
   Glib::RefPtr<Gtk::StyleContext> style_context_;

include/factory.hpp

@@ -1,20 +1,35 @@
 #pragma once
 
 #include <json/json.h>
+#ifdef HAVE_LIBDATE
 #include "modules/clock.hpp"
+#else
+#include "modules/simpleclock.hpp"
+#endif
 #ifdef HAVE_SWAY
 #include "modules/sway/mode.hpp"
 #include "modules/sway/window.hpp"
 #include "modules/sway/workspaces.hpp"
+#include "modules/sway/language.hpp"
 #endif
-#ifndef NO_FILESYSTEM
+#ifdef HAVE_WLR
+#include "modules/wlr/taskbar.hpp"
+#endif
+#ifdef HAVE_RIVER
+#include "modules/river/tags.hpp"
+#endif
+#if defined(__linux__) && !defined(NO_FILESYSTEM)
 #include "modules/battery.hpp"
 #endif
+#if defined(HAVE_CPU_LINUX) || defined(HAVE_CPU_BSD)
 #include "modules/cpu.hpp"
+#endif
 #include "modules/idle_inhibitor.hpp"
+#if defined(HAVE_MEMORY_LINUX) || defined(HAVE_MEMORY_BSD)
 #include "modules/memory.hpp"
+#endif
 #include "modules/disk.hpp"
-#if defined(HAVE_DBUSMENU) && !defined(NO_FILESYSTEM)
+#ifdef HAVE_DBUSMENU
 #include "modules/sni/tray.hpp"
 #endif
 #ifdef HAVE_LIBNL
@@ -27,11 +42,19 @@
 #include "modules/pulseaudio.hpp"
 #endif
 #ifdef HAVE_LIBMPDCLIENT
-#include "modules/mpd.hpp"
+#include "modules/mpd/mpd.hpp"
+#endif
+#ifdef HAVE_LIBSNDIO
+#include "modules/sndio.hpp"
 #endif
 #include "bar.hpp"
 #include "modules/custom.hpp"
 #include "modules/temperature.hpp"
+#if defined(__linux__)
+#  ifdef WANT_RFKILL
+#    include "modules/bluetooth.hpp"
+#  endif
+#endif
 
 namespace waybar {
 

include/modules/battery.hpp

@@ -31,19 +31,22 @@ class Battery : public ALabel {
  private:
   static inline const fs::path data_dir_ = "/sys/class/power_supply/";
 
-  void                                          getBatteries();
+  void                                                 refreshBatteries();
   void                                                 worker();
   const std::string                                    getAdapterStatus(uint8_t capacity) const;
-  const std::tuple<uint8_t, float, std::string> getInfos() const;
+  const std::tuple<uint8_t, float, std::string, float> getInfos();
   const std::string                                    formatTimeRemaining(float hoursRemaining);
 
-  std::vector<fs::path> batteries_;
+  int                   global_watch;
+  std::map<fs::path,int> batteries_;
   fs::path              adapter_;
-  int                   fd_;
+  int                   battery_watch_fd_;
-  std::vector<int>      wds_;
+  int                   global_watch_fd_;
+  std::mutex            battery_list_mutex_;
   std::string           old_status_;
 
   util::SleeperThread   thread_;
+  util::SleeperThread   thread_battery_update_;
   util::SleeperThread   thread_timer_;
 };
 

include/modules/bluetooth.hpp

@@ -0,0 +1,18 @@
+#pragma once
+
+#include "ALabel.hpp"
+#include "util/rfkill.hpp"
+
+namespace waybar::modules {
+
+class Bluetooth : public ALabel {
+ public:
+  Bluetooth(const std::string&, const Json::Value&);
+  ~Bluetooth() = default;
+  auto update() -> void;
+
+ private:
+  util::Rfkill rfkill_;
+};
+
+}  // namespace waybar::modules

include/modules/clock.hpp

@@ -28,9 +28,12 @@ class Clock : public ALabel {
   std::locale locale_;
   const date::time_zone* time_zone_;
   bool fixed_time_zone_;
-  date::year_month_day cached_calendar_ymd_;
+  int time_zone_idx_;
+  date::year_month_day cached_calendar_ymd_ = date::January/1/0;
   std::string cached_calendar_text_;
 
+  bool handleScroll(GdkEventScroll* e);
+
   auto calendar_text(const waybar_time& wtime) -> std::string;
   auto weekdays_header(const date::weekday& first_dow, std::ostream& os) -> void;
   auto first_day_of_week() -> date::weekday;

include/modules/cpu.hpp

@@ -1,7 +1,6 @@
 #pragma once
 
 #include <fmt/format.h>
-#include <sys/sysinfo.h>
 #include <cstdint>
 #include <fstream>
 #include <numeric>
@@ -20,10 +19,11 @@ class Cpu : public ALabel {
   auto update() -> void;
 
  private:
-  static inline const std::string         data_dir_ = "/proc/stat";
+  double                                  getCpuLoad();
-  uint16_t                                getCpuLoad();
   std::tuple<uint16_t, std::string>       getCpuUsage();
+  std::tuple<float, float, float>         getCpuFrequency();
   std::vector<std::tuple<size_t, size_t>> parseCpuinfo();
+  std::vector<float>                      parseCpuFrequencies();
 
   std::vector<std::tuple<size_t, size_t>> prev_times_;
 

include/modules/custom.hpp

@@ -22,6 +22,7 @@ class Custom : public ALabel {
   void continuousWorker();
   void parseOutputRaw();
   void parseOutputJson();
+  void handleEvent();
   bool handleScroll(GdkEventScroll* e);
   bool handleToggle(GdkEventButton* const& e);
 

include/modules/idle_inhibitor.hpp

@@ -12,12 +12,13 @@ class IdleInhibitor : public ALabel {
   IdleInhibitor(const std::string&, const waybar::Bar&, const Json::Value&);
   ~IdleInhibitor();
   auto update() -> void;
+  static std::list<waybar::AModule*> modules;
+  static bool                        status;
 
  private:
   bool handleToggle(GdkEventButton* const& e);
 
   const Bar&                    bar_;
-  std::string                   status_;
   struct zwp_idle_inhibitor_v1* idle_inhibitor_;
   int                           pid_;
 };

include/modules/memory.hpp

@@ -2,6 +2,7 @@
 
 #include <fmt/format.h>
 #include <fstream>
+#include <unordered_map>
 #include "ALabel.hpp"
 #include "util/sleeper_thread.hpp"
 
@@ -14,11 +15,9 @@ class Memory : public ALabel {
   auto update() -> void;
 
  private:
-  static inline const std::string data_dir_ = "/proc/meminfo";
   void                            parseMeminfo();
 
-  unsigned long memtotal_;
+  std::unordered_map<std::string, unsigned long> meminfo_;
-  unsigned long memfree_;
 
   util::SleeperThread thread_;
 };

include/modules/mpd.hpp

@@ -1,74 +0,0 @@
-#pragma once
-
-#include <fmt/format.h>
-#include <mpd/client.h>
-#include <condition_variable>
-#include <thread>
-#include "ALabel.hpp"
-
-namespace waybar::modules {
-
-class MPD : public ALabel {
- public:
-  MPD(const std::string&, const Json::Value&);
-  auto update() -> void;
-
- private:
-  std::thread periodic_updater();
-  std::string getTag(mpd_tag_type type, unsigned idx = 0);
-  void        setLabel();
-  std::string getStateIcon();
-  std::string getOptionIcon(std::string optionName, bool activated);
-
-  std::thread event_listener();
-
-  // Assumes `connection_lock_` is locked
-  void tryConnect();
-  // If checking errors on the main connection, make sure to lock it using
-  // `connection_lock_` before calling checkErrors
-  void checkErrors(mpd_connection* conn);
-
-  // Assumes `connection_lock_` is locked
-  void fetchState();
-  void waitForEvent();
-
-  bool handlePlayPause(GdkEventButton* const&);
-
-  bool stopped();
-  bool playing();
-  bool paused();
-
-  const std::string module_name_;
-
-  using unique_connection = std::unique_ptr<mpd_connection, decltype(&mpd_connection_free)>;
-  using unique_status = std::unique_ptr<mpd_status, decltype(&mpd_status_free)>;
-  using unique_song = std::unique_ptr<mpd_song, decltype(&mpd_song_free)>;
-
-  // Not using unique_ptr since we don't manage the pointer
-  // (It's either nullptr, or from the config)
-  const char*    server_;
-  const unsigned port_;
-
-  unsigned timeout_;
-
-  // We need a mutex here because we can trigger updates from multiple thread:
-  // the event based updates, the periodic updates needed for the elapsed time,
-  // and the click play/pause feature
-  std::mutex        connection_lock_;
-  unique_connection connection_;
-  // The alternate connection will be used to wait for events: since it will
-  // be blocking (idle) we can't send commands via this connection
-  //
-  // No lock since only used in the event listener thread
-  unique_connection alternate_connection_;
-
-  // Protect them using the `connection_lock_`
-  unique_status status_;
-  mpd_state     state_;
-  unique_song   song_;
-
-  // To make sure the previous periodic_updater stops before creating a new one
-  std::mutex periodic_lock_;
-};
-
-}  // namespace waybar::modules

include/modules/mpd/mpd.hpp

@@ -0,0 +1,67 @@
+#pragma once
+
+#include <fmt/format.h>
+#include <mpd/client.h>
+#include <spdlog/spdlog.h>
+
+#include <condition_variable>
+#include <thread>
+
+#include "ALabel.hpp"
+#include "modules/mpd/state.hpp"
+
+namespace waybar::modules {
+
+class MPD : public ALabel {
+  friend class detail::Context;
+
+  // State machine
+  detail::Context context_{this};
+
+  const std::string module_name_;
+
+  // Not using unique_ptr since we don't manage the pointer
+  // (It's either nullptr, or from the config)
+  const char*       server_;
+  const unsigned    port_;
+  const std::string password_;
+
+  unsigned timeout_;
+
+  detail::unique_connection connection_;
+
+  detail::unique_status status_;
+  mpd_state             state_;
+  detail::unique_song   song_;
+
+ public:
+  MPD(const std::string&, const Json::Value&);
+  virtual ~MPD() noexcept = default;
+  auto update() -> void;
+
+ private:
+  std::string getTag(mpd_tag_type type, unsigned idx = 0) const;
+  void        setLabel();
+  std::string getStateIcon() const;
+  std::string getOptionIcon(std::string optionName, bool activated) const;
+
+  // GUI-side methods
+  bool handlePlayPause(GdkEventButton* const&);
+  void emit() { dp.emit(); }
+
+  // MPD-side, Non-GUI methods.
+  void tryConnect();
+  void checkErrors(mpd_connection* conn);
+  void fetchState();
+  void queryMPD();
+
+  inline bool stopped() const { return connection_ && state_ == MPD_STATE_STOP; }
+  inline bool playing() const { return connection_ && state_ == MPD_STATE_PLAY; }
+  inline bool paused() const { return connection_ && state_ == MPD_STATE_PAUSE; }
+};
+
+#if !defined(MPD_NOINLINE)
+#include "modules/mpd/state.inl.hpp"
+#endif
+
+}  // namespace waybar::modules

include/modules/mpd/state.hpp

@@ -0,0 +1,217 @@
+#pragma once
+
+#include <mpd/client.h>
+#include <fmt/format.h>
+#include <spdlog/spdlog.h>
+
+#include <condition_variable>
+#include <thread>
+
+#include "ALabel.hpp"
+
+namespace waybar::modules {
+class MPD;
+}  // namespace waybar::modules
+
+namespace waybar::modules::detail {
+
+using unique_connection = std::unique_ptr<mpd_connection, decltype(&mpd_connection_free)>;
+using unique_status = std::unique_ptr<mpd_status, decltype(&mpd_status_free)>;
+using unique_song = std::unique_ptr<mpd_song, decltype(&mpd_song_free)>;
+
+class Context;
+
+/// This state machine loosely follows a non-hierarchical, statechart
+/// pattern, and includes ENTRY and EXIT actions.
+///
+/// The State class is the base class for all other states. The
+/// entry and exit methods are automatically called when entering
+/// into a new state and exiting from the current state. This
+/// includes initially entering (Disconnected class) and exiting
+/// Waybar.
+///
+/// The following nested "top-level" states are represented:
+/// 1. Idle - await notification of MPD activity.
+/// 2. All Non-Idle states:
+///    1. Playing - An active song is producing audio output.
+///    2. Paused - The current song is paused.
+///    3. Stopped - No song is actively playing.
+/// 3. Disconnected - periodically attempt MPD (re-)connection.
+///
+/// NOTE: Since this statechart is non-hierarchical, the above
+/// states are flattened into a set.
+
+class State {
+ public:
+  virtual ~State() noexcept = default;
+
+  virtual void entry() noexcept { spdlog::debug("mpd: ignore entry action"); }
+  virtual void exit() noexcept { spdlog::debug("mpd: ignore exit action"); }
+
+  virtual void play() { spdlog::debug("mpd: ignore play state transition"); }
+  virtual void stop() { spdlog::debug("mpd: ignore stop state transition"); }
+  virtual void pause() { spdlog::debug("mpd: ignore pause state transition"); }
+
+  /// Request state update the GUI.
+  virtual void update() noexcept { spdlog::debug("mpd: ignoring update method request"); }
+};
+
+class Idle : public State {
+  Context* const   ctx_;
+  sigc::connection idle_connection_;
+
+ public:
+  Idle(Context* const ctx) : ctx_{ctx} {}
+  virtual ~Idle() noexcept { this->exit(); };
+
+  void entry() noexcept override;
+  void exit() noexcept override;
+
+  void play() override;
+  void stop() override;
+  void pause() override;
+  void update() noexcept override;
+
+ private:
+  Idle(const Idle&) = delete;
+  Idle& operator=(const Idle&) = delete;
+
+  bool on_io(Glib::IOCondition const&);
+};
+
+class Playing : public State {
+  Context* const   ctx_;
+  sigc::connection timer_connection_;
+
+ public:
+  Playing(Context* const ctx) : ctx_{ctx} {}
+  virtual ~Playing() noexcept { this->exit(); }
+
+  void entry() noexcept override;
+  void exit() noexcept override;
+
+  void pause() override;
+  void stop() override;
+  void update() noexcept override;
+
+ private:
+  Playing(Playing const&) = delete;
+  Playing& operator=(Playing const&) = delete;
+
+  bool on_timer();
+};
+
+class Paused : public State {
+  Context* const   ctx_;
+  sigc::connection timer_connection_;
+
+ public:
+  Paused(Context* const ctx) : ctx_{ctx} {}
+  virtual ~Paused() noexcept { this->exit(); }
+
+  void entry() noexcept override;
+  void exit() noexcept override;
+
+  void play() override;
+  void stop() override;
+  void update() noexcept override;
+
+ private:
+  Paused(Paused const&) = delete;
+  Paused& operator=(Paused const&) = delete;
+
+  bool on_timer();
+};
+
+class Stopped : public State {
+  Context* const   ctx_;
+  sigc::connection timer_connection_;
+
+ public:
+  Stopped(Context* const ctx) : ctx_{ctx} {}
+  virtual ~Stopped() noexcept { this->exit(); }
+
+  void entry() noexcept override;
+  void exit() noexcept override;
+
+  void play() override;
+  void pause() override;
+  void update() noexcept override;
+
+ private:
+  Stopped(Stopped const&) = delete;
+  Stopped& operator=(Stopped const&) = delete;
+
+  bool on_timer();
+};
+
+class Disconnected : public State {
+  Context* const   ctx_;
+  sigc::connection timer_connection_;
+
+ public:
+  Disconnected(Context* const ctx) : ctx_{ctx} {}
+  virtual ~Disconnected() noexcept { this->exit(); }
+
+  void entry() noexcept override;
+  void exit() noexcept override;
+
+  void update() noexcept override;
+
+ private:
+  Disconnected(Disconnected const&) = delete;
+  Disconnected& operator=(Disconnected const&) = delete;
+
+  void arm_timer(int interval) noexcept;
+  void disarm_timer() noexcept;
+
+  bool on_timer();
+};
+
+class Context {
+  std::unique_ptr<State> state_;
+  waybar::modules::MPD*  mpd_module_;
+
+  friend class State;
+  friend class Playing;
+  friend class Paused;
+  friend class Stopped;
+  friend class Disconnected;
+  friend class Idle;
+
+ protected:
+  void setState(std::unique_ptr<State>&& new_state) noexcept {
+    if (state_.get() != nullptr) {
+      state_->exit();
+    }
+    state_ = std::move(new_state);
+    state_->entry();
+  }
+
+  bool                             is_connected() const;
+  bool                             is_playing() const;
+  bool                             is_paused() const;
+  bool                             is_stopped() const;
+  constexpr std::size_t            interval() const;
+  void                             tryConnect() const;
+  void                             checkErrors(mpd_connection*) const;
+  void                             do_update();
+  void                             queryMPD() const;
+  void                             fetchState() const;
+  constexpr mpd_state              state() const;
+  void                             emit() const;
+  [[nodiscard]] unique_connection& connection();
+
+ public:
+  explicit Context(waybar::modules::MPD* const mpd_module)
+      : state_{std::make_unique<Disconnected>(this)}, mpd_module_{mpd_module} {
+    state_->entry();
+  }
+
+  void play() { state_->play(); }
+  void stop() { state_->stop(); }
+  void pause() { state_->pause(); }
+  void update() noexcept { state_->update(); }
+};
+
+}  // namespace waybar::modules::detail

include/modules/mpd/state.inl.hpp

@@ -0,0 +1,24 @@
+#pragma once
+
+namespace detail {
+
+inline bool Context::is_connected() const { return mpd_module_->connection_ != nullptr; }
+inline bool Context::is_playing() const { return mpd_module_->playing(); }
+inline bool Context::is_paused() const { return mpd_module_->paused(); }
+inline bool Context::is_stopped() const { return mpd_module_->stopped(); }
+
+constexpr inline std::size_t Context::interval() const { return mpd_module_->interval_.count(); }
+inline void                  Context::tryConnect() const { mpd_module_->tryConnect(); }
+inline unique_connection&    Context::connection() { return mpd_module_->connection_; }
+constexpr inline mpd_state   Context::state() const { return mpd_module_->state_; }
+
+inline void Context::do_update() {
+  mpd_module_->setLabel();
+}
+
+inline void Context::checkErrors(mpd_connection* conn) const { mpd_module_->checkErrors(conn); }
+inline void Context::queryMPD() const { mpd_module_->queryMPD(); }
+inline void Context::fetchState() const { mpd_module_->fetchState(); }
+inline void Context::emit() const { mpd_module_->emit(); }
+
+}  // namespace detail

include/modules/network.hpp

@@ -11,6 +11,9 @@
 #include <sys/epoll.h>
 #include "ALabel.hpp"
 #include "util/sleeper_thread.hpp"
+#ifdef WANT_RFKILL
+#include "util/rfkill.hpp"
+#endif
 
 namespace waybar::modules {
 
@@ -71,6 +74,9 @@ class Network : public ALabel {
 
   util::SleeperThread thread_;
   util::SleeperThread thread_timer_;
+#ifdef WANT_RFKILL
+  util::Rfkill rfkill_;
+#endif
 };
 
 }  // namespace waybar::modules

include/modules/pulseaudio.hpp

@@ -4,6 +4,7 @@
 #include <pulse/pulseaudio.h>
 #include <pulse/volume.h>
 #include <algorithm>
+#include <array>
 #include "ALabel.hpp"
 
 namespace waybar::modules {
@@ -37,12 +38,14 @@ class Pulseaudio : public ALabel {
   std::string form_factor_;
   std::string desc_;
   std::string monitor_;
+  std::string default_sink_name_;
   // SOURCE
   uint32_t    source_idx_{0};
   uint16_t    source_volume_;
   bool        source_muted_;
   std::string source_port_name_;
   std::string source_desc_;
+  std::string default_source_name_;
 };
 
 }  // namespace waybar::modules

include/modules/river/tags.hpp

@@ -0,0 +1,31 @@
+#pragma once
+
+#include <gtkmm/button.h>
+#include <wayland-client.h>
+
+#include "AModule.hpp"
+#include "bar.hpp"
+#include "river-status-unstable-v1-client-protocol.h"
+#include "xdg-output-unstable-v1-client-protocol.h"
+
+namespace waybar::modules::river {
+
+class Tags : public waybar::AModule {
+ public:
+  Tags(const std::string &, const waybar::Bar &, const Json::Value &);
+  ~Tags();
+
+  // Handlers for wayland events
+  void handle_focused_tags(uint32_t tags);
+  void handle_view_tags(struct wl_array *tags);
+
+  struct zriver_status_manager_v1 *status_manager_;
+
+ private:
+  const waybar::Bar &      bar_;
+  Gtk::Box                 box_;
+  std::vector<Gtk::Button> buttons_;
+  struct zriver_output_status_v1 *output_status_;
+};
+
+} /* namespace waybar::modules::river */

include/modules/simpleclock.hpp

@@ -0,0 +1,24 @@
+#pragma once
+
+#include <fmt/format.h>
+#if FMT_VERSION < 60000
+#include <fmt/time.h>
+#else
+#include <fmt/chrono.h>
+#endif
+#include "ALabel.hpp"
+#include "util/sleeper_thread.hpp"
+
+namespace waybar::modules {
+
+class Clock : public ALabel {
+ public:
+  Clock(const std::string&, const Json::Value&);
+  ~Clock() = default;
+  auto update() -> void;
+
+ private:
+  util::SleeperThread thread_;
+};
+
+}  // namespace waybar::modules

include/modules/sndio.hpp

@@ -0,0 +1,30 @@
+#pragma once
+
+#include <sndio.h>
+#include <vector>
+#include "ALabel.hpp"
+#include "util/sleeper_thread.hpp"
+
+namespace waybar::modules {
+
+class Sndio : public ALabel {
+ public:
+  Sndio(const std::string&, const Json::Value&);
+  ~Sndio();
+  auto update() -> void;
+  auto set_desc(struct sioctl_desc *, unsigned int) -> void;
+  auto put_val(unsigned int, unsigned int) -> void;
+  bool handleScroll(GdkEventScroll *);
+  bool handleToggle(GdkEventButton* const&);
+
+ private:
+  auto connect_to_sndio() -> void;
+  util::SleeperThread thread_;
+  struct sioctl_hdl *hdl_;
+  std::vector<struct pollfd> pfds_;
+  unsigned int addr_;
+  unsigned int volume_, old_volume_, maxval_;
+  bool muted_;
+};
+
+}  // namespace waybar::modules

include/modules/sni/item.hpp

@@ -10,11 +10,6 @@
 #include <json/json.h>
 #include <libdbusmenu-gtk/dbusmenu-gtk.h>
 #include <sigc++/trackable.h>
-#ifdef FILESYSTEM_EXPERIMENTAL
-#include <experimental/filesystem>
-#else
-#include <filesystem>
-#endif
 
 namespace waybar::modules::SNI {
 

include/modules/sni/tray.hpp

@@ -21,7 +21,7 @@ class Tray : public AModule {
 
   static inline std::size_t nb_hosts_ = 0;
   Gtk::Box                  box_;
-  SNI::Watcher              watcher_;
+  SNI::Watcher::singleton   watcher_;
   SNI::Host                 host_;
 };
 

include/modules/sni/watcher.hpp

@@ -7,10 +7,24 @@
 namespace waybar::modules::SNI {
 
 class Watcher {
+ private:
+  Watcher();
+
  public:
-  Watcher(std::size_t id);
   ~Watcher();
 
+  using singleton = std::shared_ptr<Watcher>;
+  static singleton getInstance() {
+    static std::weak_ptr<Watcher> weak;
+
+    std::shared_ptr<Watcher> strong = weak.lock();
+    if (!strong) {
+      strong = std::shared_ptr<Watcher>(new Watcher());
+      weak = strong;
+    }
+    return strong;
+  }
+
  private:
   typedef enum { GF_WATCH_TYPE_HOST, GF_WATCH_TYPE_ITEM } GfWatchType;
 
@@ -34,7 +48,6 @@ class Watcher {
   void updateRegisteredItems(SnWatcher *obj);
 
   uint32_t   bus_name_id_;
-  uint32_t   watcher_id_;
   GSList *   hosts_ = nullptr;
   GSList *   items_ = nullptr;
   SnWatcher *watcher_ = nullptr;

include/modules/sway/language.hpp

@@ -0,0 +1,28 @@
+#pragma once
+
+#include <fmt/format.h>
+#include "ALabel.hpp"
+#include "bar.hpp"
+#include "client.hpp"
+#include "modules/sway/ipc/client.hpp"
+#include "util/json.hpp"
+
+namespace waybar::modules::sway {
+
+class Language : public ALabel, public sigc::trackable {
+ public:
+  Language(const std::string& id, const Json::Value& config);
+  ~Language() = default;
+  auto update() -> void;
+
+ private:
+  void onEvent(const struct Ipc::ipc_response&);
+  void onCmd(const struct Ipc::ipc_response&);
+  
+  std::string      lang_;
+  util::JsonParser parser_;
+  std::mutex       mutex_;
+  Ipc              ipc_;
+};
+
+}  // namespace waybar::modules::sway

include/modules/sway/workspaces.hpp

@@ -1,8 +1,10 @@
 #pragma once
 
+#include <unordered_map>
 #include <fmt/format.h>
 #include <gtkmm/button.h>
 #include <gtkmm/label.h>
+#include <unordered_map>
 #include "AModule.hpp"
 #include "bar.hpp"
 #include "client.hpp"
@@ -18,6 +20,10 @@ class Workspaces : public AModule, public sigc::trackable {
   auto update() -> void;
 
  private:
+  static inline const std::string workspace_switch_cmd_ = "workspace {} \"{}\"";
+
+  static int convertWorkspaceNameToNum(std::string name);
+
   void              onCmd(const struct Ipc::ipc_response&);
   void              onEvent(const struct Ipc::ipc_response&);
   bool              filterButtons();

include/modules/temperature.hpp

@@ -14,7 +14,7 @@ class Temperature : public ALabel {
   auto update() -> void;
 
  private:
-  std::tuple<uint16_t, uint16_t> getTemperature();
+  float               getTemperature();
   bool                isCritical(uint16_t);
 
   std::string         file_path_;

include/modules/wlr/taskbar.hpp

@@ -0,0 +1,160 @@
+#pragma once
+
+#include "AModule.hpp"
+#include "bar.hpp"
+#include "client.hpp"
+#include "util/json.hpp"
+
+#include <memory>
+#include <string>
+#include <vector>
+
+#include <gdk/gdk.h>
+
+#include <glibmm/refptr.h>
+
+#include <gtkmm/box.h>
+#include <gtkmm/button.h>
+#include <gtkmm/image.h>
+#include <gtkmm/label.h>
+#include <gtkmm/icontheme.h>
+
+#include <wayland-client.h>
+#include "wlr-foreign-toplevel-management-unstable-v1-client-protocol.h"
+
+
+namespace waybar::modules::wlr {
+
+class Taskbar;
+
+class Task
+{
+   public:
+    Task(const waybar::Bar&, const Json::Value&, Taskbar*,
+         struct zwlr_foreign_toplevel_handle_v1 *, struct wl_seat*);
+    ~Task();
+
+   public:
+    enum State {
+        MAXIMIZED = (1 << 0),
+        MINIMIZED = (1 << 1),
+        ACTIVE = (1 << 2),
+        FULLSCREEN = (1 << 3),
+        INVALID = (1 << 4)
+    };
+
+   private:
+    static uint32_t global_id;
+
+   private:
+    const waybar::Bar &bar_;
+    const Json::Value &config_;
+    Taskbar *tbar_;
+    struct zwlr_foreign_toplevel_handle_v1 *handle_;
+    struct wl_seat *seat_;
+
+    uint32_t id_;
+
+    Gtk::Button button_;
+    Gtk::Box content_;
+    Gtk::Image icon_;
+    Gtk::Label text_before_;
+    Gtk::Label text_after_;
+    bool button_visible_;
+
+    bool with_icon_;
+    std::string format_before_;
+    std::string format_after_;
+
+    std::string format_tooltip_;
+
+    std::string title_;
+    std::string app_id_;
+    uint32_t state_ = 0;
+
+   private:
+    std::string repr() const;
+    std::string state_string(bool = false) const;
+
+   public:
+    /* Getter functions */
+    uint32_t id() const { return id_; }
+    std::string title() const { return title_; }
+    std::string app_id() const { return app_id_; }
+    uint32_t state() const { return state_; }
+    bool maximized() const { return state_ & MAXIMIZED; }
+    bool minimized() const { return state_ & MINIMIZED; }
+    bool active() const { return state_ & ACTIVE; }
+    bool fullscreen() const { return state_ & FULLSCREEN; }
+
+   public:
+    /* Callbacks for the wlr protocol */
+    void handle_title(const char *);
+    void handle_app_id(const char *);
+    void handle_output_enter(struct wl_output *);
+    void handle_output_leave(struct wl_output *);
+    void handle_state(struct wl_array *);
+    void handle_done();
+    void handle_closed();
+
+    /* Callbacks for Gtk events */
+    bool handle_clicked(GdkEventButton *);
+
+  public:
+    bool operator==(const Task&) const;
+    bool operator!=(const Task&) const;
+
+  public:
+    void update();
+
+  public:
+    /* Interaction with the tasks */
+    void maximize(bool);
+    void minimize(bool);
+    void activate();
+    void fullscreen(bool);
+    void close();
+};
+
+using TaskPtr = std::unique_ptr<Task>;
+
+
+class Taskbar : public waybar::AModule
+{
+   public:
+    Taskbar(const std::string&, const waybar::Bar&, const Json::Value&);
+    ~Taskbar();
+    void update();
+
+   private:
+    const waybar::Bar &bar_;
+    Gtk::Box box_;
+    std::vector<TaskPtr> tasks_;
+
+    std::vector<Glib::RefPtr<Gtk::IconTheme>> icon_themes_;
+
+    struct zwlr_foreign_toplevel_manager_v1 *manager_;
+    struct wl_seat *seat_;
+
+   public:
+    /* Callbacks for global registration */
+    void register_manager(struct wl_registry*, uint32_t name, uint32_t version);
+    void register_seat(struct wl_registry*, uint32_t name, uint32_t version);
+
+    /* Callbacks for the wlr protocol */
+    void handle_toplevel_create(struct zwlr_foreign_toplevel_handle_v1 *);
+    void handle_finished();
+
+   public:
+    void add_button(Gtk::Button &);
+    void move_button(Gtk::Button &, int);
+    void remove_button(Gtk::Button &);
+    void remove_task(uint32_t);
+
+    bool show_output(struct wl_output *) const;
+    bool all_outputs() const;
+
+    std::vector<Glib::RefPtr<Gtk::IconTheme>> icon_themes() const;
+};
+
+} /* namespace waybar::modules::wlr */

include/util/command.hpp

@@ -1,9 +1,22 @@
 #pragma once
 
 #include <giomm.h>
+#include <spdlog/spdlog.h>
 #include <sys/wait.h>
 #include <unistd.h>
 
+#ifdef __linux__
+#include <sys/prctl.h>
+#endif
+#ifdef __FreeBSD__
+#include <sys/procctl.h>
+#endif
+
+#include <array>
+
+extern std::mutex reap_mtx;
+extern std::list<pid_t> reap;
+
 namespace waybar::util::command {
 
 struct res {
@@ -28,20 +41,31 @@ inline std::string read(FILE* fp) {
 }
 
 inline int close(FILE* fp, pid_t pid) {
-  int stat;
+  int stat = -1;
+  pid_t ret;
 
   fclose(fp);
-  while (waitpid(pid, &stat, 0) == -1) {
+  do {
-    if (errno != EINTR) {
+    ret = waitpid(pid, &stat, WCONTINUED | WUNTRACED);
-      stat = 0;
+
+    if (WIFEXITED(stat)) {
+      spdlog::debug("Cmd exited with code {}", WEXITSTATUS(stat));
+    } else if (WIFSIGNALED(stat)) {
+      spdlog::debug("Cmd killed by {}", WTERMSIG(stat));
+    } else if (WIFSTOPPED(stat)) {
+      spdlog::debug("Cmd stopped by {}", WSTOPSIG(stat));
+    } else if (WIFCONTINUED(stat)) {
+      spdlog::debug("Cmd continued");
+    } else if (ret == -1) {
+      spdlog::debug("waitpid failed: {}", strerror(errno));
+    } else {
       break;
     }
-  }
+  } while (!WIFEXITED(stat) && !WIFSIGNALED(stat));
-
   return stat;
 }
 
-inline FILE* open(const std::string cmd, int& pid) {
+inline FILE* open(const std::string& cmd, int& pid) {
   if (cmd == "") return nullptr;
   int fd[2];
   pipe(fd);
@@ -49,15 +73,33 @@ inline FILE* open(const std::string cmd, int& pid) {
   pid_t child_pid = fork();
 
   if (child_pid < 0) {
-    printf("Unable to exec cmd %s, error %s", cmd.c_str(), strerror(errno));
+    spdlog::error("Unable to exec cmd {}, error {}", cmd.c_str(), strerror(errno));
     return nullptr;
   }
 
   if (!child_pid) {
+    int err;
+    sigset_t mask;
+    sigfillset(&mask);
+    // Reset sigmask
+    err = pthread_sigmask(SIG_UNBLOCK, &mask, nullptr);
+    if (err != 0) spdlog::error("pthread_sigmask in open failed: {}", strerror(err));
+    // Kill child if Waybar exits
+    int deathsig = SIGTERM;
+#ifdef __linux__
+    if (prctl(PR_SET_PDEATHSIG, deathsig) != 0) {
+      spdlog::error("prctl(PR_SET_PDEATHSIG) in open failed: {}", strerror(errno));
+    }
+#endif
+#ifdef __FreeBSD__
+    if (procctl(P_PID, 0, PROC_PDEATHSIG_CTL, reinterpret_cast<void*>(&deathsig)) == -1) {
+      spdlog::error("procctl(PROC_PDEATHSIG_CTL) in open failed: {}", strerror(errno));
+    }
+#endif
     ::close(fd[0]);
     dup2(fd[1], 1);
     setpgid(child_pid, child_pid);
-    execl("/bin/sh", "sh", "-c", cmd.c_str(), (char*)0);
+    execlp("/bin/sh", "sh", "-c", cmd.c_str(), (char*)0);
     exit(0);
   } else {
     ::close(fd[1]);
@@ -66,7 +108,7 @@ inline FILE* open(const std::string cmd, int& pid) {
   return fdopen(fd[0], "r");
 }
 
-inline struct res exec(std::string cmd) {
+inline struct res exec(const std::string& cmd) {
   int  pid;
   auto fp = command::open(cmd, pid);
   if (!fp) return {-1, ""};
@@ -75,23 +117,40 @@ inline struct res exec(std::string cmd) {
   return {WEXITSTATUS(stat), output};
 }
 
-inline int32_t forkExec(std::string cmd) {
+inline struct res execNoRead(const std::string& cmd) {
+  int  pid;
+  auto fp = command::open(cmd, pid);
+  if (!fp) return {-1, ""};
+  auto stat = command::close(fp, pid);
+  return {WEXITSTATUS(stat), ""};
+}
+
+inline int32_t forkExec(const std::string& cmd) {
   if (cmd == "") return -1;
 
-  int32_t pid = fork();
+  pid_t pid = fork();
 
   if (pid < 0) {
-    printf("Unable to exec cmd %s, error %s", cmd.c_str(), strerror(errno));
+    spdlog::error("Unable to exec cmd {}, error {}", cmd.c_str(), strerror(errno));
     return pid;
   }
 
   // Child executes the command
   if (!pid) {
+    int err;
+    sigset_t mask;
+    sigfillset(&mask);
+    // Reset sigmask
+    err = pthread_sigmask(SIG_UNBLOCK, &mask, nullptr);
+    if (err != 0) spdlog::error("pthread_sigmask in forkExec failed: {}", strerror(err));
     setpgid(pid, pid);
     execl("/bin/sh", "sh", "-c", cmd.c_str(), (char*)0);
     exit(0);
   } else {
-    signal(SIGCHLD,SIG_IGN);
+    reap_mtx.lock();
+    reap.push_back(pid);
+    reap_mtx.unlock();
+    spdlog::debug("Added child to reap list: {}", pid);
   }
 
   return pid;

include/util/format.hpp

@@ -23,7 +23,7 @@ namespace fmt {
         constexpr auto parse(ParseContext& ctx) -> decltype (ctx.begin()) {
           auto it = ctx.begin(), end = ctx.end();
           if (it != end && *it == ':') ++it;
-          if (*it == '>' || *it == '<' || *it == '=') {
+          if (it && (*it == '>' || *it == '<' || *it == '=')) {
             spec = *it;
             ++it;
           }

include/util/rfkill.hpp

@@ -0,0 +1,26 @@
+#pragma once
+
+#include <glibmm/iochannel.h>
+#include <linux/rfkill.h>
+#include <sigc++/signal.h>
+#include <sigc++/trackable.h>
+
+namespace waybar::util {
+
+class Rfkill : public sigc::trackable {
+ public:
+  Rfkill(enum rfkill_type rfkill_type);
+  ~Rfkill();
+  bool getState() const;
+
+  sigc::signal<void(struct rfkill_event&)> on_update;
+
+ private:
+  enum rfkill_type rfkill_type_;
+  bool             state_ = false;
+  int              fd_ = -1;
+
+  bool on_event(Glib::IOCondition cond);
+};
+
+}  // namespace waybar::util

include/util/sleeper_thread.hpp

@@ -59,6 +59,11 @@ class SleeperThread {
       do_run_ = false;
     }
     condvar_.notify_all();
+    auto handle = thread_.native_handle();
+    if (handle != 0) {
+      // TODO: find a proper way to terminate thread...
+      pthread_cancel(handle);
+    }
   }
 
   ~SleeperThread() {

include/util/ustring_clen.hpp

@@ -0,0 +1,5 @@
+#pragma once
+#include <glibmm/ustring.h>
+
+// calculate column width of ustring
+int ustring_clen(const Glib::ustring &str);

man/waybar-backlight.5.scd

@@ -10,29 +10,37 @@ The *backlight* module displays the current backlight level.
 
 # CONFIGURATION
 
-*interval* ++
+*interval*: ++
 	typeof: integer ++
 	default: 2 ++
 	The interval in which information gets polled.
 
-*format* ++
+*format*: ++
 	typeof: string ++
 	default: {percent}% ++
 	The format, how information should be displayed. On {} data gets inserted.
 
-*max-length* ++
+*max-length*: ++
 	typeof: integer ++
 	The maximum length in characters the module should display.
 
-*rotate* ++
+*min-length*: ++
+    typeof: integer ++
+    The minimum length in characters the module should take up.
+
+*align*: ++
+    typeof: float ++
+    The alignment of the text, where 0 is left-aligned and 1 is right-aligned. If the module is rotated, it will follow the flow of the text.
+
+*rotate*: ++
 	typeof: integer ++
 	Positive value to rotate the text label.
 
-*states* ++
+*states*: ++
 	typeof: array ++
 	A number of backlight states which get activated on certain brightness levels.
 
-*on-click* ++
+*on-click*: ++
 	typeof: string ++
 	Command to execute when the module is clicked.
 
@@ -40,19 +48,23 @@ The *backlight* module displays the current backlight level.
 	typeof: string ++
 	Command to execute when middle-clicked on the module using mousewheel.
 
-*on-click-right* ++
+*on-click-right*: ++
 	typeof: string ++
 	Command to execute when the module is right clicked.
 
-*on-scroll-up* ++
+*on-update*: ++
+	typeof: string ++
+	Command to execute when the module is updated.
+
+*on-scroll-up*: ++
 	typeof: string ++
 	Command to execute when performing a scroll up on the module.
 
-*on-scroll-down* ++
+*on-scroll-down*: ++
 	typeof: string
 	Command to execute when performing a scroll down on the module.
 
-*smooth-scrolling-threshold* ++
+*smooth-scrolling-threshold*: ++
 	typeof: double
 	Threshold to be used when scrolling.
 

man/waybar-battery.5.scd

@@ -10,29 +10,38 @@ The *battery* module displays the current capacity and state (eg. charging) of y
 
 # CONFIGURATION
 
-*bat* ++
+*bat*: ++
 	typeof: string ++
 	The battery to monitor, as in /sys/class/power_supply/ instead of auto detect.
 
-*adapter* ++
+*adapter*: ++
 	typeof: string ++
 	The adapter to monitor, as in /sys/class/power_supply/ instead of auto detect.
 
-*interval* ++
+*full-at*: ++
+	typeof: integer ++
+	Define the max percentage of the battery, for when you've set the battery to stop charging at a lower level to save it. For example, if you've set the battery to stop at 80% that will become the new 100%.
+
+*design-capacity*: ++
+    typeof: bool ++
+    default: false ++
+    Option to use the battery design capacity instead of it's current maximal capacity.
+
+*interval*: ++
 	typeof: integer ++
 	default: 60 ++
 	The interval in which the information gets polled.
 
-*states* ++
+*states*: ++
 	typeof: array ++
 	A number of battery states which get activated on certain capacity levels. See *waybar-states(5)*.
 
-*format* ++
+*format*: ++
 	typeof: string ++
 	default: {capacity}% ++
 	The format, how the time should be displayed.
 
-*format-time* ++
+*format-time*: ++
 	typeof: string ++
 	default: {H} h {M} min ++
 	The format, how the time should be displayed.
@@ -46,6 +55,14 @@ The *battery* module displays the current capacity and state (eg. charging) of y
 	typeof: integer++
 	The maximum length in character the module should display.
 
+*min-length*: ++
+    typeof: integer ++
+    The minimum length in characters the module should take up.
+
+*align*: ++
+    typeof: float ++
+    The alignment of the text, where 0 is left-aligned and 1 is right-aligned. If the module is rotated, it will follow the flow of the text.
+
 *rotate*: ++
 	typeof: integer++
 	Positive value to rotate the text label.
@@ -58,10 +75,14 @@ The *battery* module displays the current capacity and state (eg. charging) of y
 	typeof: string ++
 	Command to execute when middle-clicked on the module using mousewheel.
 
-*on-click-right* ++
+*on-click-right*: ++
 	typeof: string ++
 	Command to execute when you right clicked on the module.
 
+*on-update*: ++
+	typeof: string ++
+	Command to execute when the module is updated.
+
 *on-scroll-up*: ++
 	typeof: string ++
 	Command to execute when scrolling up on the module.
@@ -70,11 +91,11 @@ The *battery* module displays the current capacity and state (eg. charging) of y
 	typeof: string ++
 	Command to execute when scrolling down on the module.
 
-*smooth-scrolling-threshold* ++
+*smooth-scrolling-threshold*: ++
 	typeof: double ++
 	Threshold to be used when scrolling.
 
-*tooltip* ++
+*tooltip*: ++
 	typeof: bool ++
 	default: true ++
 	Option to disable tooltip on hover.
@@ -83,6 +104,8 @@ The *battery* module displays the current capacity and state (eg. charging) of y
 
 *{capacity}*: Capacity in percentage
 
+*{power}*: Power in watts
+
 *{icon}*: Icon, as defined in *format-icons*.
 
 *{time}*: Estimate of time until full or empty. Note that this is based on the power draw at the last refresh time, not an average.

man/waybar-bluetooth.5.scd

@@ -0,0 +1,96 @@
+waybar-bluetooth(5)
+
+# NAME
+
+waybar - bluetooth module
+
+# DESCRIPTION
+
+The *bluetooth* module displays information about the status of the device's bluetooth device.
+
+# CONFIGURATION
+
+Addressed by *bluetooth*
+
+*format*: ++
+	typeof: string  ++
+	default: *{icon}* ++
+	The format, how information should be displayed. This format is used when other formats aren't specified.
+
+*format-icons*: ++
+	typeof: array/object ++
+	Based on the device status, the corresponding icon gets selected. ++
+	The order is *low* to *high*. Or by the state if it is an object.
+
+*rotate*: ++
+	typeof: integer ++
+	Positive value to rotate the text label.
+
+*max-length*: ++
+	typeof: integer ++
+	The maximum length in character the module should display.
+
+*min-length*: ++
+    typeof: integer ++
+    The minimum length in characters the module should take up.
+
+*align*: ++
+    typeof: float ++
+    The alignment of the text, where 0 is left-aligned and 1 is right-aligned. If the module is rotated, it will follow the flow of the text.
+
+*on-click*: ++
+	typeof: string ++
+	Command to execute when clicked on the module.
+
+*on-click-middle*: ++
+	typeof: string ++
+	Command to execute when middle-clicked on the module using mousewheel.
+
+*on-click-right*: ++
+	typeof: string ++
+	Command to execute when you right clicked on the module.
+
+*on-scroll-up*: ++
+	typeof: string ++
+	Command to execute when scrolling up on the module.
+
+*on-scroll-down*: ++
+	typeof: string ++
+	Command to execute when scrolling down on the module.
+
+*smooth-scrolling-threshold*: ++
+	typeof: double ++
+	Threshold to be used when scrolling.
+
+*tooltip*: ++
+	typeof: bool ++
+	default: *true* ++
+	Option to disable tooltip on hover.
+
+*tooltip-format*: ++
+	typeof: string ++
+	The format, how information should be displayed in the tooltip. This format is used when other formats aren't specified.
+
+# FORMAT REPLACEMENTS
+
+*{status}*: Status of the bluetooth device.
+
+*{icon}*: Icon, as defined in *format-icons*.
+
+# EXAMPLES
+
+```
+"bluetooth": {
+	"format": "{icon}",
+	"format-alt": "bluetooth: {status}",
+	"format-icons": {
+		"enabled": "",
+		"disabled": ""
+	},
+	"tooltip-format": "{}"
+}
+```
+
+# STYLE
+
+- *#bluetooth*

man/waybar-clock.5.scd

@@ -26,15 +26,33 @@ The *clock* module displays the current date and time.
 	default: inferred local timezone ++
 	The timezone to display the time in, e.g. America/New_York.
 
+*timezones*: ++
+	typeof: list of strings ++
+	A list of timezones to use for time display, changed using the scroll wheel. ++
+	Use "" to represent the system's local timezone.  Using %Z in the format or tooltip format is useful to track which time zone is currently displayed.
+
 *locale*: ++
 	typeof: string ++
 	default: inferred from current locale ++
 	A locale to be used to display the time. Intended to render times in custom timezones with the proper language and format.
 
+*today-format*: ++
+	typeof: string ++
+	default: <b><u>{}</u></b> ++
+	The format of today's date in the calendar.
+
 *max-length*: ++
 	typeof: integer ++
 	The maximum length in character the module should display.
 
+*min-length*: ++
+    typeof: integer ++
+    The minimum length in characters the module should take up.
+
+*align*: ++
+    typeof: float ++
+    The alignment of the text, where 0 is left-aligned and 1 is right-aligned. If the module is rotated, it will follow the flow of the text.
+
 *rotate*: ++
 	typeof: integer ++
 	Positive value to rotate the text label.
@@ -51,6 +69,10 @@ The *clock* module displays the current date and time.
 	typeof: string ++
 	Command to execute when you right clicked on the module.
 
+*on-update*: ++
+	typeof: string ++
+	Command to execute when the module is updated.
+
 *on-scroll-up*: ++
 	typeof: string ++
 	Command to execute when scrolling up on the module.

man/waybar-cpu.5.scd

@@ -24,6 +24,14 @@ The *cpu* module displays the current cpu utilization.
 	typeof: integer ++
 	The maximum length in character the module should display.
 
+*min-length*: ++
+    typeof: integer ++
+    The minimum length in characters the module should take up.
+
+*align*: ++
+    typeof: float ++
+    The alignment of the text, where 0 is left-aligned and 1 is right-aligned. If the module is rotated, it will follow the flow of the text.
+
 *rotate*: ++
 	typeof: integer ++
 	Positive value to rotate the text label.
@@ -44,6 +52,10 @@ The *cpu* module displays the current cpu utilization.
 	typeof: string ++
 	Command to execute when you right clicked on the module.
 
+*on-update*: ++
+	typeof: string ++
+	Command to execute when the module is updated.
+
 *on-scroll-up*: ++
 	typeof: string ++
 	Command to execute when scrolling up on the module.
@@ -67,6 +79,12 @@ The *cpu* module displays the current cpu utilization.
 
 *{usage}*: Current cpu usage.
 
+*{avg_frequency}*: Current cpu average frequency (based on all cores) in GHz.
+
+*{max_frequency}*: Current cpu max frequency (based on the core with the highest frequency) in GHz.
+
+*{min_frequency}*: Current cpu min frequency (based on the core with the lowest frequency) in GHz.
+
 # EXAMPLE
 
 ```

man/waybar-custom.5.scd

@@ -22,6 +22,12 @@ Addressed by *custom/<name>*
 	The path to a script, which determines if the script in *exec* should be executed.
 	*exec* will be executed if the exit code of *exec-if* equals 0.
 
+*exec-on-event*: ++
+	typeof: bool ++
+	default: true ++
+	If an event command is set (e.g. *on-click* or *on-scroll-up*) then re-execute the script after
+	executing the event command.
+
 *return-type*: ++
 	typeof: string ++
 	See *return-type*
@@ -33,6 +39,12 @@ Addressed by *custom/<name>*
 	You can update it manually with a signal. If no *interval* is defined,
 	it is assumed that the out script loops it self.
 
+*restart-interval*: ++
+	typeof: integer ++
+	The restart interval (in seconds).
+	Can't be used with the *interval* option, so only with continuous scripts.
+	Once the script exit, it'll be re-executed after the *restart-interval*.
+
 *signal*: ++
 	typeof: integer ++
 	The signal number used to update the module.
@@ -55,6 +67,14 @@ Addressed by *custom/<name>*
 	typeof: integer ++
 	The maximum length in character the module should display.
 
+*min-length*: ++
+    typeof: integer ++
+    The minimum length in characters the module should take up.
+
+*align*: ++
+    typeof: float ++
+    The alignment of the text, where 0 is left-aligned and 1 is right-aligned. If the module is rotated, it will follow the flow of the text.
+
 *on-click*: ++
 	typeof: string ++
 	Command to execute when clicked on the module.
@@ -67,6 +87,10 @@ Addressed by *custom/<name>*
 	typeof: string ++
 	Command to execute when you right clicked on the module.
 
+*on-update*: ++
+	typeof: string ++
+	Command to execute when the module is updated.
+
 *on-scroll-up*: ++
 	typeof: string ++
 	Command to execute when scrolling up on the module.

man/waybar-disk.5.scd

@@ -31,10 +31,22 @@ Addressed by *disk*
 	typeof: integer ++
 	Positive value to rotate the text label.
 
+*states*: ++
+	typeof: array ++
+	A number of disk utilization states which get activated on certain percentage thresholds (percentage_used). See *waybar-states(5)*.
+
 *max-length*: ++
 	typeof: integer ++
 	The maximum length in character the module should display.
 
+*min-length*: ++
+    typeof: integer ++
+    The minimum length in characters the module should take up.
+
+*align*: ++
+    typeof: float ++
+    The alignment of the text, where 0 is left-aligned and 1 is right-aligned. If the module is rotated, it will follow the flow of the text.
+
 *on-click*: ++
 	typeof: string ++
 	Command to execute when clicked on the module.
@@ -47,6 +59,10 @@ Addressed by *disk*
 	typeof: string ++
 	Command to execute when you right clicked on the module.
 
+*on-update*: ++
+	typeof: string ++
+	Command to execute when the module is updated.
+
 *on-scroll-up*: ++
 	typeof: string ++
 	Command to execute when scrolling up on the module.

man/waybar-idle-inhibitor.5.scd

@@ -27,6 +27,14 @@ screensaving, also known as "presentation mode".
 	typeof: integer ++
 	The maximum length in character the module should display.
 
+*min-length*: ++
+    typeof: integer ++
+    The minimum length in characters the module should take up.
+
+*align*: ++
+    typeof: float ++
+    The alignment of the text, where 0 is left-aligned and 1 is right-aligned. If the module is rotated, it will follow the flow of the text.
+
 *on-click*: ++
 	typeof: string ++
 	Command to execute when clicked on the module. A click also toggles the state
@@ -39,6 +47,10 @@ screensaving, also known as "presentation mode".
 	typeof: string ++
 	Command to execute when you right clicked on the module.
 
+*on-update*: ++
+	typeof: string ++
+	Command to execute when the module is updated.
+
 *on-scroll-up*: ++
 	typeof: string ++
 	Command to execute when scrolling up on the module.

man/waybar-memory.5.scd

@@ -34,6 +34,14 @@ Addressed by *memory*
 	typeof: integer ++
 	The maximum length in character the module should display.
 
+*min-length*: ++
+    typeof: integer ++
+    The minimum length in characters the module should take up.
+
+*align*: ++
+    typeof: float ++
+    The alignment of the text, where 0 is left-aligned and 1 is right-aligned. If the module is rotated, it will follow the flow of the text.
+
 *on-click*: ++
 	typeof: string ++
 	Command to execute when clicked on the module.
@@ -46,6 +54,10 @@ Addressed by *memory*
 	typeof: string ++
 	Command to execute when you right clicked on the module.
 
+*on-update*: ++
+	typeof: string ++
+	Command to execute when the module is updated.
+
 *on-scroll-up*: ++
 	typeof: string ++
 	Command to execute when scrolling up on the module.

man/waybar-mpd.5.scd

@@ -20,6 +20,10 @@ Addressed by *mpd*
 	typeof: integer ++
 	The port MPD listens to. If empty, use the default port.
 
+*password*: ++
+	typeof: string ++
+	The password required to connect to the MPD server. If empty, no password is sent to MPD.
+
 *interval*: ++
 	typeof: integer++
 	default: 5 ++
@@ -69,6 +73,22 @@ Addressed by *mpd*
 	default: "MPD (disconnected)" ++
 	Tooltip information displayed when the MPD server can't be reached.
 
+*artist-len*: ++
+    typeof: integer ++
+    Maximum length of the Artist tag.
+
+*album-len*: ++
+    typeof: integer ++
+    Maximum length of the Album tag.
+
+*album-artist-len*: ++
+    typeof: integer ++
+    Maximum length of the Album Artist tag.
+
+*title-len*: ++
+    typeof: integer ++
+    Maximum length of the Title tag.
+
 *rotate*: ++
 	typeof: integer ++
 	Positive value to rotate the text label.
@@ -77,6 +97,14 @@ Addressed by *mpd*
 	typeof: integer ++
 	The maximum length in character the module should display.
 
+*min-length*: ++
+    typeof: integer ++
+    The minimum length in characters the module should take up.
+
+*align*: ++
+    typeof: float ++
+    The alignment of the text, where 0 is left-aligned and 1 is right-aligned. If the module is rotated, it will follow the flow of the text.
+
 *on-click*: ++
 	typeof: string ++
 	Command to execute when clicked on the module.
@@ -89,6 +117,10 @@ Addressed by *mpd*
 	typeof: string ++
 	Command to execute when you right clicked on the module.
 
+*on-update*: ++
+	typeof: string ++
+	Command to execute when the module is updated.
+
 *on-scroll-up*: ++
 	typeof: string ++
 	Command to execute when scrolling up on the module.
@@ -144,6 +176,10 @@ Addressed by *mpd*
 
 *{totalTime}*: The length of the current song. To format as a date/time (see example configuration)
 
+*{songPosition}*: The position of the current song.
+
+*{queueLength}*: The length of the current queue.
+
 *{stateIcon}*: The icon corresponding the playing or paused status of the player (see *state-icons* option)
 
 *{consumeIcon}*: The icon corresponding the "consume" option (see *consume-icons* option)

man/waybar-network.5.scd

@@ -33,7 +33,7 @@ Addressed by *network*
 
 *format-ethernet*: ++
 	typeof: string ++
-	This format is used when a ethernet interface is displayed.
+	This format is used when an ethernet interface is displayed.
 
 *format-wifi*: ++
 	typeof: string ++
@@ -47,6 +47,10 @@ Addressed by *network*
 	typeof: string ++
 	This format is used when the displayed interface is disconnected.
 
+*format-disabled*: ++
+	typeof: string ++
+	This format is used when the displayed interface is disabled.
+
 *format-icons*: ++
 	typeof: array/object ++
 	Based on the current signal strength, the corresponding icon gets selected. ++
@@ -60,6 +64,14 @@ Addressed by *network*
 	typeof: integer ++
 	The maximum length in character the module should display.
 
+*min-length*: ++
+    typeof: integer ++
+    The minimum length in characters the module should take up.
+
+*align*: ++
+    typeof: float ++
+    The alignment of the text, where 0 is left-aligned and 1 is right-aligned. If the module is rotated, it will follow the flow of the text.
+
 *on-click*: ++
 	typeof: string ++
 	Command to execute when clicked on the module.
@@ -72,6 +84,10 @@ Addressed by *network*
 	typeof: string ++
 	Command to execute when you right clicked on the module.
 
+*on-update*: ++
+	typeof: string ++
+	Command to execute when the module is updated.
+
 *on-scroll-up*: ++
 	typeof: string ++
 	Command to execute when scrolling up on the module.
@@ -95,7 +111,7 @@ Addressed by *network*
 
 *tooltip-format-ethernet*: ++
 	typeof: string ++
-	This format is used when a ethernet interface is displayed.
+	This format is used when an ethernet interface is displayed.
 
 *tooltip-format-wifi*: ++
 	typeof: string ++
@@ -105,6 +121,10 @@ Addressed by *network*
 	typeof: string ++
 	This format is used when the displayed interface is disconnected.
 
+*tooltip-format-disabled*: ++
+	typeof: string ++
+	This format is used when the displayed interface is disabled.
+
 # FORMAT REPLACEMENTS
 
 *{ifname}*: Name of the network interface.
@@ -142,6 +162,7 @@ Addressed by *network*
 	"format-wifi": "{essid} ({signalStrength}%) ",
 	"format-ethernet": "{ifname} ",
 	"format-disconnected": "", //An empty format will hide the module.
+	"format-disconnected": "",
 	"tooltip-format": "{ifname}",
 	"tooltip-format-wifi": "{essid} ({signalStrength}%) ",
 	"tooltip-format-ethernet": "{ifname} ",
@@ -154,6 +175,7 @@ Addressed by *network*
 
 - *#network*
 - *#network.disconnected*
+- *#network.disabled*
 - *#network.linked*
 - *#network.ethernet*
 - *#network.wifi*

man/waybar-pulseaudio.5.scd

@@ -50,6 +50,14 @@ Additionally you can control the volume by scrolling *up* or *down* while the cu
 	typeof: integer ++
 	The maximum length in character the module should display.
 
+*min-length*: ++
+    typeof: integer ++
+    The minimum length in characters the module should take up.
+
+*align*: ++
+    typeof: float ++
+    The alignment of the text, where 0 is left-aligned and 1 is right-aligned. If the module is rotated, it will follow the flow of the text.
+
 *scroll-step*: ++
 	typeof: float ++
 	default: 1.0 ++
@@ -67,6 +75,10 @@ Additionally you can control the volume by scrolling *up* or *down* while the cu
 	typeof: string ++
 	Command to execute when you right clicked on the module.
 
+*on-update*: ++
+	typeof: string ++
+	Command to execute when the module is updated.
+
 *on-scroll-up*: ++
 	typeof: string ++
 	Command to execute when scrolling up on the module. This replaces the default behaviour of volume control.

man/waybar-river-tags.5.scd

@@ -0,0 +1,42 @@
+waybar-river-tags(5)
+
+# NAME
+
+waybar - river tags module
+
+# DESCRIPTION
+
+The *tags* module displays the current state of tags in river.
+
+# CONFIGURATION
+
+Addressed by *river/tags*
+
+*num-tags*: ++
+    typeof: uint ++
+    default: 9 ++
+    The number of tags that should be displayed.
+
+*tag-labels*: ++
+    typeof: array ++
+    The label to display for each tag.
+
+# EXAMPLE
+
+```
+"river/tags": {
+    "num-tags": 5
+}
+```
+
+# STYLE
+
+- *#tags button*
+- *#tags button.occupied*
+- *#tags button.focused*
+
+Note that a tag can be both occupied and focused at the same time.
+
+# SEE ALSO
+
+waybar(5), river(1)

man/waybar-sndio.5.scd

@@ -0,0 +1,91 @@
+waybar-sndio(5)
+
+# NAME
+
+waybar - sndio module
+
+# DESCRIPTION
+
+The *sndio* module displays the current volume reported by sndio(7).
+
+Additionally, you can control the volume by scrolling *up* or *down* while the
+cursor is over the module, and clicking on the module toggles mute.
+
+# CONFIGURATION
+
+*format*: ++
+	typeof: string  ++
+	default: {volume}% ++
+	The format for how information should be displayed.
+
+*rotate*: ++
+	typeof: integer ++
+	Positive value to rotate the text label.
+
+*max-length*: ++
+	typeof: integer ++
+	The maximum length in character the module should display.
+
+*min-length*: ++
+    typeof: integer ++
+    The minimum length in characters the module should take up.
+
+*align*: ++
+    typeof: float ++
+    The alignment of the text, where 0 is left-aligned and 1 is right-aligned. If the module is rotated, it will follow the flow of the text.
+
+*scroll-step*: ++
+	typeof: int ++
+	default: 5 ++
+	The speed in which to change the volume when scrolling.
+
+*on-click*: ++
+	typeof: string ++
+	Command to execute when clicked on the module.
+	This replaces the default behaviour of toggling mute.
+
+*on-click-middle*: ++
+	typeof: string ++
+	Command to execute when middle-clicked on the module using mousewheel.
+
+*on-click-right*: ++
+	typeof: string ++
+	Command to execute when you right clicked on the module.
+
+*on-update*: ++
+	typeof: string ++
+	Command to execute when the module is updated.
+
+*on-scroll-up*: ++
+	typeof: string ++
+	Command to execute when scrolling up on the module.
+	This replaces the default behaviour of volume control.
+
+*on-scroll-down*: ++
+	typeof: string ++
+	Command to execute when scrolling down on the module.
+	This replaces the default behaviour of volume control.
+
+*smooth-scrolling-threshold*: ++
+	typeof: double ++
+	Threshold to be used when scrolling.
+
+# FORMAT REPLACEMENTS
+
+*{volume}*: Volume in percentage.
+
+*{raw_value}*: Volume as value reported by sndio.
+
+# EXAMPLES
+
+```
+"sndio": {
+    "format": "{raw_value} 🎜",
+    "scroll-step": 3
+}
+```
+
+# STYLE
+
+- *#sndio*
+- *#sndio.muted*

man/waybar-states.5.scd

@@ -13,7 +13,7 @@ apply a class when the value matches the declared state value.
 	  Each class gets activated when the current capacity is equal or below the configured *<value>*.
 
 	- Also each state can have its own *format*.
-	  Those con be configured via *format-<name>*.
+	  Those can be configured via *format-<name>*.
 	  Or if you want to differentiate a bit more even as *format-<status>-<state>*.
 
 # EXAMPLE

man/waybar-sway-language.5.scd

@@ -0,0 +1,80 @@
+waybar-sway-language(5)
+
+# NAME
+
+waybar - sway language module
+
+# DESCRIPTION
+
+The *language* module displays the current keyboard layout in Sway
+
+# CONFIGURATION
+
+Addressed by *sway/language*
+
+*format*: ++
+	typeof: string ++
+	default: {} ++
+	The format, how information should be displayed. On {} data gets inserted.
+
+*rotate*: ++
+	typeof: integer ++
+	Positive value to rotate the text label.
+
+*max-length*: ++
+	typeof: integer ++
+	The maximum length in character the module should display.
+
+*min-length*: ++
+    typeof: integer ++
+    The minimum length in characters the module should take up.
+
+*align*: ++
+    typeof: float ++
+    The alignment of the text, where 0 is left-aligned and 1 is right-aligned. If the module is rotated, it will follow the flow of the text.
+
+*on-click*: ++
+	typeof: string ++
+	Command to execute when clicked on the module.
+
+*on-click-middle*: ++
+	typeof: string ++
+	Command to execute when middle-clicked on the module using mousewheel.
+
+*on-click-right*: ++
+	typeof: string ++
+	Command to execute when you right clicked on the module.
+
+*on-update*: ++
+	typeof: string ++
+	Command to execute when the module is updated.
+
+*on-scroll-up*: ++
+	typeof: string ++
+	Command to execute when scrolling up on the module.
+
+*on-scroll-down*: ++
+	typeof: string ++
+	Command to execute when scrolling down on the module.
+
+*smooth-scrolling-threshold*: ++
+	typeof: double ++
+	Threshold to be used when scrolling.
+
+*tooltip*: ++
+	typeof: bool ++
+	default: true ++
+	Option to disable tooltip on hover.
+
+# EXAMPLES
+
+```
+"sway/language": {
+    "format": "{}",
+    "max-length": 50
+}
+```
+
+# STYLE
+
+- *#language*

man/waybar-sway-mode.5.scd

@@ -25,6 +25,14 @@ Addressed by *sway/mode*
 	typeof: integer ++
 	The maximum length in character the module should display.
 
+*min-length*: ++
+    typeof: integer ++
+    The minimum length in characters the module should take up.
+
+*align*: ++
+    typeof: float ++
+    The alignment of the text, where 0 is left-aligned and 1 is right-aligned. If the module is rotated, it will follow the flow of the text.
+
 *on-click*: ++
 	typeof: string ++
 	Command to execute when clicked on the module.
@@ -37,6 +45,10 @@ Addressed by *sway/mode*
 	typeof: string ++
 	Command to execute when you right clicked on the module.
 
+*on-update*: ++
+	typeof: string ++
+	Command to execute when the module is updated.
+
 *on-scroll-up*: ++
 	typeof: string ++
 	Command to execute when scrolling up on the module.

man/waybar-sway-window.5.scd

@@ -25,6 +25,14 @@ Addressed by *sway/window*
 	typeof: integer ++
 	The maximum length in character the module should display.
 
+*min-length*: ++
+    typeof: integer ++
+    The minimum length in characters the module should take up.
+
+*align*: ++
+    typeof: float ++
+    The alignment of the text, where 0 is left-aligned and 1 is right-aligned. If the module is rotated, it will follow the flow of the text.
+
 *on-click*: ++
 	typeof: string ++
 	Command to execute when clicked on the module.
@@ -37,6 +45,10 @@ Addressed by *sway/window*
 	typeof: string ++
 	Command to execute when you right clicked on the module.
 
+*on-update*: ++
+	typeof: string ++
+	Command to execute when the module is updated.
+
 *on-scroll-up*: ++
 	typeof: string ++
 	Command to execute when scrolling up on the module.

man/waybar-sway-workspaces.5.scd

@@ -19,7 +19,7 @@ Addressed by *sway/workspaces*
 
 *format*: ++
     typeof: string ++
-    default: {name} ++
+    default: {value} ++
     The format, how information should be displayed.
 
 *format-icons*: ++
@@ -31,6 +31,11 @@ Addressed by *sway/workspaces*
     default: false ++
     If set to false, you can scroll to cycle through workspaces. If set to true this behaviour is disabled.
 
+*disable-click*: ++
+    typeof: bool ++
+    default: false ++
+    If set to false, you can click to change workspace. If set to true this behaviour is disabled.
+
 *smooth-scrolling-threshold*: ++
     typeof: double ++
     Threshold to be used when scrolling.
@@ -60,9 +65,23 @@ Addressed by *sway/workspaces*
     default: empty ++
     Lists workspaces that should always be shown, even when non existent
 
+*on-update*: ++
+    typeof: string ++
+    Command to execute when the module is updated.
+
+*numeric-first*: ++
+    typeof: bool ++
+    Whether to put workspaces starting with numbers before workspaces that do not start with a number.
+
+*disable-auto-back-and-forth*: ++
+    typeof: bool ++
+    Whether to disable *workspace_auto_back_and_forth* when clicking on workspaces. If this is set to *true*, clicking on a workspace you are already on won't do anything, even if *workspace_auto_back_and_forth* is enabled in the Sway configuration.
+
 # FORMAT REPLACEMENTS
 
-*{name}*: Name of the workspace, as defined by sway.
+*{value}*: Name of the workspace, as defined by sway.
+
+*{name}*: Number stripped from workspace value.
 
 *{icon}*: Icon, as defined in *format-icons*.
 
@@ -75,6 +94,7 @@ Additional to workspace name matching, the following *format-icons* can be set.
 - *default*: Will be shown, when no string matches is found.
 - *urgent*: Will be shown, when workspace is flagged as urgent
 - *focused*: Will be shown, when workspace is focused
+- *persistent*: Will be shown, when workspace is persistent one.
 
 # PERSISTENT WORKSPACES
 
@@ -100,6 +120,7 @@ n.b.: the list of outputs can be obtained from command line using *swaymsg -t ge
 "sway/workspaces": {
     "disable-scroll": true,
     "all-outputs": true,
+    "numeric-first": false,
     "format": "{name}: {icon}",
     "format-icons": {
         "1": "",
@@ -121,3 +142,5 @@ n.b.: the list of outputs can be obtained from command line using *swaymsg -t ge
 - *#workspaces button.focused*
 - *#workspaces button.urgent*
 - *#workspaces button.persistent*
+- *#workspaces button.current_output*
+- *#workspaces button#sway-workspace-${name}*

man/waybar-temperature.5.scd

@@ -20,6 +20,14 @@ Addressed by *temperature*
 	typeof: string ++
 	The temperature path to use, e.g. */sys/class/hwmon/hwmon2/temp1_input* instead of one in */sys/class/thermal/*.
 
+*hwmon-path-abs*: ++
+	typeof: string ++
+	The path of the hwmon-directory of the device, e.g. */sys/devices/pci0000:00/0000:00:18.3/hwmon*. (Note that the subdirectory *hwmon/hwmon#*, where *#* is a number is not part of the path!) Has to be used together with *input-filename*.
+
+*input-filename*: ++
+	typeof: string ++
+	The temperature filename of your *hwmon-path-abs*, e.g. *temp1_input*
+
 *critical-threshold*: ++
 	typeof: integer ++
 	The threshold before it is considered critical (Celsius).
@@ -36,12 +44,17 @@ Addressed by *temperature*
 *format*: ++
 	typeof: string  ++
 	default: {temperatureC}°C ++
-	The format (Celsius/Fahrenheit) in which the temperature should be displayed.
+	The format (Celsius/Fahrenheit/Kelvin) in which the temperature should be displayed.
 
 *format-icons*: ++
 	typeof: array ++
 	Based on the current temperature (Celsius) and *critical-threshold* if available, the corresponding icon gets selected. The order is *low* to *high*.
 
+*tooltip-format*: ++
+	typeof: string  ++
+	default: {temperatureC}°C ++
+	The format for the tooltip
+
 *rotate*: ++
 	typeof: integer ++
 	Positive value to rotate the text label.
@@ -50,6 +63,14 @@ Addressed by *temperature*
 	typeof: integer ++
 	The maximum length in characters the module should display.
 
+*min-length*: ++
+    typeof: integer ++
+    The minimum length in characters the module should take up.
+
+*align*: ++
+    typeof: float ++
+    The alignment of the text, where 0 is left-aligned and 1 is right-aligned. If the module is rotated, it will follow the flow of the text.
+
 *on-click*: ++
 	typeof: string ++
 	Command to execute when you clicked on the module.
@@ -62,6 +83,10 @@ Addressed by *temperature*
 	typeof: string ++
 	Command to execute when you right clicked on the module.
 
+*on-update*: ++
+	typeof: string ++
+	Command to execute when the module is updated.
+
 *on-scroll-up*: ++
 	typeof: string ++
 	Command to execute when scrolling up on the module.
@@ -85,6 +110,8 @@ Addressed by *temperature*
 
 *{temperatureF}*: Temperature in Fahrenheit.
 
+*{temperatureK}*: Temperature in Kelvin.
+
 # EXAMPLES
 
 ```

man/waybar-tray.5.scd

@@ -20,6 +20,10 @@ Addressed by *tray*
     typeof: integer ++
     Defines the spacing between the tray icons.
 
+*on-update*: ++
+	typeof: string ++
+	Command to execute when the module is updated.
+
 # EXAMPLES
 
 ```

man/waybar-wlr-taskbar.5.scd

@@ -0,0 +1,112 @@
+waybar-wlr-taskbar(5)
+
+# NAME
+
+wlroots - Taskbar module
+
+# DESCRIPTION
+
+The *taskbar* module displays the currently open applications. This module requires
+a compositor that implements the foreign-toplevel-manager interface.
+
+# CONFIGURATION
+
+Addressed by *wlr/taskbar*
+
+*all-outputs*: ++
+	typeof: bool ++
+	default: false ++
+	If set to false applications on the waybar's current output will be shown. Otherwise all applications are shown.
+
+*format*: ++
+	typeof: string ++
+	default: {icon} ++
+	The format, how information should be displayed.
+
+*icon-theme*: ++
+	typeof: array|string ++
+	The names of the icon-themes that should be used to find an icon. The list will be traversed from left to right. If omitted, the system default will be used.
+
+*icon-size*: ++
+	typeof: integer ++
+	default: 16 ++
+	The size of the icon.
+
+*markup*: ++
+	typeof: bool ++
+	default: false ++
+	If set to true, pango markup will be accepted in format and tooltip-format.
+
+*tooltip*: ++
+	typeof: bool ++
+	default: true ++
+	If set to false no tooltip will be shown.
+
+*tooltip-format*: ++
+	typeof: string ++
+	default: {title} ++
+	The format, how information in the tooltip should be displayed.
+
+*active-first*: ++
+	typeof: bool ++
+	default: false ++
+	If set to true, always reorder the tasks in the taskbar so that the currently active one is first. Otherwise don't reorder.
+
+*on-click*: ++
+	typeof: string ++
+	The action which should be triggered when clicking on the application button with the left mouse button.
+
+*on-click-middle*: ++
+	typeof: string ++
+	The action which should be triggered when clicking on the application button with the middle mouse button.
+
+*on-click-right*: ++
+	typeof: string ++
+	The action which should be triggered when clicking on the application button with the right mouse button.
+
+*on-update*: ++
+	typeof: string ++
+	Command to execute when the module is updated.
+
+# FORMAT REPLACEMENTS
+
+*{icon}*: The icon of the application.
+
+*{title}*: The title of the application.
+
+*{app_id}*: The app_id (== application name) of the application.
+
+*{state}*: The state (minimized, maximized, active, fullscreen) of the application.
+
+*{short_state}*: The state (minimize == m, maximized == M, active == A, fullscreen == F) represented as one character of the application.
+
+# CLICK ACTIONS
+
+*activate*: Bring the application into foreground.
+*minimize*: Toggle application's minimized state.
+*minimize-raise*: Bring the application into foreground or toggle its minimized state.
+*maximize*: Toggle application's maximized state.
+*fullscreen*: Toggle application's fullscreen state.
+*close*: Close the application.
+
+# EXAMPLES
+
+```
+"wlr/taskbar": {
+	"format": "{icon}",
+	"icon-size": 14,
+	"icon-theme": "Numix-Circle",
+	"tooltip-format": "{title}",
+	"on-click": "activate",
+	"on-click-middle": "close"
+}
+```
+
+# Style
+
+- *#taskbar*
+- *#taskbar button*
+- *#taskbar button.maximized*
+- *#taskbar button.minimized*
+- *#taskbar button.active*
+- *#taskbar button.fullscreen*

man/waybar.5.scd.in

@@ -14,8 +14,9 @@ Valid locations for this file are:
 - *~/.config/waybar/config*
 - *~/waybar/config*
 - */etc/xdg/waybar/config*
+- *@sysconfdir@/xdg/waybar/config*
 
-A good starting point is the default configuration found at https://github.com/Alexays/Waybar/blob/master/resources/config.
+A good starting point is the default configuration found at https://github.com/Alexays/Waybar/blob/master/resources/config
 Also a minimal example configuration can be found on the at the bottom of this man page.
 
 # BAR CONFIGURATION
@@ -28,7 +29,7 @@ Also a minimal example configuration can be found on the at the bottom of this m
 
 *output* ++
 	typeof: string|array ++
-	Specifies on which screen this bar will be displayed.
+	Specifies on which screen this bar will be displayed. Exclamation mark(*!*) can be used to exclude specific output.
 
 *position* ++
 	typeof: string ++
@@ -185,16 +186,21 @@ Valid options for the "rotate" property are: 0, 90, 180 and 270.
 
 - *waybar-backlight(5)*
 - *waybar-battery(5)*
+- *waybar-bluetooth(5)*
 - *waybar-clock(5)*
 - *waybar-cpu(5)*
 - *waybar-custom(5)*
+- *waybar-disk(5)*
 - *waybar-idle-inhibitor(5)*
 - *waybar-memory(5)*
-- *waybar-mdp(5)*
+- *waybar-mpd(5)*
 - *waybar-network(5)*
 - *waybar-pulseaudio(5)*
+- *waybar-river-tags(5)*
+- *waybar-states(5)*
 - *waybar-sway-mode(5)*
 - *waybar-sway-window(5)*
 - *waybar-sway-workspaces(5)*
+- *waybar-wlr-taskbar(5)*
 - *waybar-temperature(5)*
 - *waybar-tray(5)*

meson.build

@@ -1,7 +1,8 @@
 project(
     'waybar', 'cpp', 'c',
-    version: '0.9.1',
+    version: '0.9.6',
     license: 'MIT',
+    meson_version: '>= 0.49.0',
     default_options : [
         'cpp_std=c++17',
         'buildtype=release',
@@ -9,28 +10,38 @@ project(
     ],
 )
 
+compiler = meson.get_compiler('cpp')
+
 cpp_args = []
 cpp_link_args = []
 
 if get_option('libcxx')
     cpp_args += ['-stdlib=libc++']
     cpp_link_args += ['-stdlib=libc++', '-lc++abi']
+endif
 
+if compiler.has_link_argument('-lc++fs')
     cpp_link_args += ['-lc++fs']
-else
+elif compiler.has_link_argument('-lc++experimental')
+    cpp_link_args += ['-lc++experimental']
+elif compiler.has_link_argument('-lstdc++fs')
     cpp_link_args += ['-lstdc++fs']
 endif
 
-compiler = meson.get_compiler('cpp')
+git = find_program('git', native: true, required: false)
-git = find_program('git', required: false)
 
 if not git.found()
     add_project_arguments('-DVERSION="@0@"'.format(meson.project_version()), language: 'cpp')
 else
+    git_path = run_command([git.path(), 'rev-parse', '--show-toplevel']).stdout().strip()
+    if meson.source_root() == git_path
         git_commit_hash = run_command([git.path(), 'describe', '--always', '--tags']).stdout().strip()
         git_branch = run_command([git.path(), 'rev-parse', '--abbrev-ref', 'HEAD']).stdout().strip()
-    version = '"@0@ (" __DATE__ ", branch \'@1@\')"'.format(git_commit_hash, git_branch)
+        version = '"@0@ (branch \'@1@\')"'.format(git_commit_hash, git_branch)
         add_project_arguments('-DVERSION=@0@'.format(version), language: 'cpp')
+    else
+        add_project_arguments('-DVERSION="@0@"'.format(meson.project_version()), language: 'cpp')
+    endif
 endif
 
 if not compiler.has_header('filesystem')
@@ -61,10 +72,15 @@ endif
 add_global_arguments(cpp_args, language : 'cpp')
 add_global_link_arguments(cpp_link_args, language : 'cpp')
 
+is_linux = host_machine.system() == 'linux'
+is_dragonfly = host_machine.system() == 'dragonfly'
+is_freebsd = host_machine.system() == 'freebsd'
+is_netbsd = host_machine.system() == 'netbsd'
+is_openbsd = host_machine.system() == 'openbsd'
+
 thread_dep = dependency('threads')
-libinput = dependency('libinput')
 fmt = dependency('fmt', version : ['>=5.3.0'], fallback : ['fmt', 'fmt_dep'])
-spdlog = dependency('spdlog', version : ['>=1.3.1'], fallback : ['spdlog', 'spdlog_dep'])
+spdlog = dependency('spdlog', version : ['>=1.8.0'], fallback : ['spdlog', 'spdlog_dep'], default_options : ['external_fmt=true'])
 wayland_client = dependency('wayland-client')
 wayland_cursor = dependency('wayland-cursor')
 wayland_protos = dependency('wayland-protocols')
@@ -73,21 +89,42 @@ dbusmenu_gtk = dependency('dbusmenu-gtk3-0.4', required: get_option('dbusmenu-gt
 giounix = dependency('gio-unix-2.0', required: get_option('dbusmenu-gtk'))
 jsoncpp = dependency('jsoncpp')
 sigcpp = dependency('sigc++-2.0')
+libepoll = dependency('epoll-shim', required: false)
 libnl = dependency('libnl-3.0', required: get_option('libnl'))
 libnlgen = dependency('libnl-genl-3.0', required: get_option('libnl'))
 libpulse = dependency('libpulse', required: get_option('pulseaudio'))
 libudev = dependency('libudev', required: get_option('libudev'))
 libmpdclient = dependency('libmpdclient', required: get_option('mpd'))
+
+libsndio = compiler.find_library('sndio', required: get_option('sndio'))
+if libsndio.found()
+    if not compiler.has_function('sioctl_open', prefix: '#include <sndio.h>', dependencies: libsndio)
+        if get_option('sndio').enabled()
+            error('libsndio is too old, required >=1.7.0')
+        else
+            warning('libsndio is too old, required >=1.7.0')
+            libsndio = dependency('', required: false)
+        endif
+    endif
+endif
+
 gtk_layer_shell = dependency('gtk-layer-shell-0',
         required: get_option('gtk-layer-shell'),
         fallback : ['gtk-layer-shell', 'gtk_layer_shell_dep'])
 systemd = dependency('systemd', required: get_option('systemd'))
-tz_dep = dependency('date', default_options : [ 'use_system_tzdb=true' ], fallback: [ 'date', 'tz_dep' ])
+tz_dep = dependency('date',
+    required: false,
+    default_options : [ 'use_system_tzdb=true' ],
+    modules : [ 'date::date', 'date::date-tz' ],
+    fallback: [ 'date', 'tz_dep' ])
 
 prefix = get_option('prefix')
+sysconfdir = get_option('sysconfdir')
 conf_data = configuration_data()
 conf_data.set('prefix', prefix)
 
+add_project_arguments('-DSYSCONFDIR="/@0@"'.format(join_paths(prefix, sysconfdir)), language : 'cpp')
+
 if systemd.found()
   user_units_dir = systemd.get_pkgconfig_variable('systemduserunitdir')
 
@@ -103,27 +140,54 @@ src_files = files(
     'src/factory.cpp',
     'src/AModule.cpp',
     'src/ALabel.cpp',
-    'src/modules/memory.cpp',
-    'src/modules/battery.cpp',
-    'src/modules/clock.cpp',
     'src/modules/custom.cpp',
-    'src/modules/cpu.cpp',
     'src/modules/disk.cpp',
     'src/modules/idle_inhibitor.cpp',
     'src/modules/temperature.cpp',
     'src/main.cpp',
     'src/bar.cpp',
-    'src/client.cpp'
+    'src/client.cpp',
+    'src/util/ustring_clen.cpp'
 )
 
-if true # find_program('sway', required : false).found()
+if is_linux
-    add_project_arguments('-DHAVE_SWAY', language: 'cpp')
+    add_project_arguments('-DHAVE_CPU_LINUX', language: 'cpp')
-    src_files += [
+    add_project_arguments('-DHAVE_MEMORY_LINUX', language: 'cpp')
+    src_files += files(
+        'src/modules/battery.cpp',
+        'src/modules/cpu/common.cpp',
+        'src/modules/cpu/linux.cpp',
+        'src/modules/memory/common.cpp',
+        'src/modules/memory/linux.cpp',
+    )
+elif is_dragonfly or is_freebsd or is_netbsd or is_openbsd
+    add_project_arguments('-DHAVE_CPU_BSD', language: 'cpp')
+    add_project_arguments('-DHAVE_MEMORY_BSD', language: 'cpp')
+    src_files += files(
+        'src/modules/cpu/bsd.cpp',
+        'src/modules/cpu/common.cpp',
+        'src/modules/memory/bsd.cpp',
+        'src/modules/memory/common.cpp',
+    )
+endif
+
+add_project_arguments('-DHAVE_SWAY', language: 'cpp')
+src_files += [
     'src/modules/sway/ipc/client.cpp',
     'src/modules/sway/mode.cpp',
+    'src/modules/sway/language.cpp',
     'src/modules/sway/window.cpp',
     'src/modules/sway/workspaces.cpp'
-    ]
+]
+
+if true
+    add_project_arguments('-DHAVE_WLR', language: 'cpp')
+    src_files += 'src/modules/wlr/taskbar.cpp'
+endif
+
+if true
+    add_project_arguments('-DHAVE_RIVER', language: 'cpp')
+    src_files += 'src/modules/river/tags.cpp'
 endif
 
 if libnl.found() and libnlgen.found()
@@ -146,20 +210,43 @@ if dbusmenu_gtk.found()
     )
 endif
 
-if libudev.found()
+if libudev.found() and (is_linux or libepoll.found())
     add_project_arguments('-DHAVE_LIBUDEV', language: 'cpp')
     src_files += 'src/modules/backlight.cpp'
 endif
 
 if libmpdclient.found()
     add_project_arguments('-DHAVE_LIBMPDCLIENT', language: 'cpp')
-    src_files += 'src/modules/mpd.cpp'
+    src_files += 'src/modules/mpd/mpd.cpp'
+    src_files += 'src/modules/mpd/state.cpp'
 endif
 
 if gtk_layer_shell.found()
     add_project_arguments('-DHAVE_GTK_LAYER_SHELL', language: 'cpp')
 endif
 
+if libsndio.found()
+    add_project_arguments('-DHAVE_LIBSNDIO', language: 'cpp')
+    src_files += 'src/modules/sndio.cpp'
+endif
+
+if get_option('rfkill').enabled()
+    if is_linux
+        add_project_arguments('-DWANT_RFKILL', language: 'cpp')
+        src_files += files(
+            'src/modules/bluetooth.cpp',
+            'src/util/rfkill.cpp'
+        )
+    endif
+endif
+
+if tz_dep.found()
+    add_project_arguments('-DHAVE_LIBDATE', language: 'cpp')
+    src_files += 'src/modules/clock.cpp'
+else
+    src_files += 'src/modules/simpleclock.cpp'
+endif
+
 subdir('protocol')
 
 executable(
@@ -173,7 +260,6 @@ executable(
         spdlog,
         sigcpp,
         jsoncpp,
-        libinput,
         wayland_cursor,
         gtkmm,
         dbusmenu_gtk,
@@ -182,8 +268,10 @@ executable(
         libnlgen,
         libpulse,
         libudev,
+        libepoll,
         libmpdclient,
         gtk_layer_shell,
+        libsndio,
         tz_dep
     ],
     include_directories: [include_directories('include')],
@@ -193,7 +281,7 @@ executable(
 install_data(
     './resources/config',
     './resources/style.css',
-    install_dir: join_paths(get_option('out'), 'etc/xdg/waybar')
+    install_dir: sysconfdir + '/xdg/waybar'
 )
 
 scdoc = dependency('scdoc', version: '>=1.9.2', native: true, required: get_option('man-pages'))
@@ -201,9 +289,20 @@ scdoc = dependency('scdoc', version: '>=1.9.2', native: true, required: get_opti
 if scdoc.found()
     scdoc_prog = find_program(scdoc.get_pkgconfig_variable('scdoc'), native: true)
     sh = find_program('sh', native: true)
+
+    main_manpage = configure_file(
+        input: 'man/waybar.5.scd.in',
+        output: 'waybar.5.scd',
+        configuration: {
+            'sysconfdir': join_paths(prefix, sysconfdir)
+        }
+    )
+
+    main_manpage_path = join_paths(meson.build_root(), '@0@'.format(main_manpage))
+
     mandir = get_option('mandir')
     man_files = [
-        'waybar.5.scd',
+        main_manpage_path,
         'waybar-backlight.5.scd',
         'waybar-battery.5.scd',
         'waybar-clock.5.scd',
@@ -215,22 +314,31 @@ if scdoc.found()
         'waybar-mpd.5.scd',
         'waybar-network.5.scd',
         'waybar-pulseaudio.5.scd',
+        'waybar-river-tags.5.scd',
+        'waybar-sway-language.5.scd',
         'waybar-sway-mode.5.scd',
         'waybar-sway-window.5.scd',
         'waybar-sway-workspaces.5.scd',
         'waybar-temperature.5.scd',
         'waybar-tray.5.scd',
         'waybar-states.5.scd',
+        'waybar-wlr-taskbar.5.scd',
+        'waybar-bluetooth.5.scd',
+        'waybar-sndio.5.scd',
     ]
 
-    foreach filename : man_files
+    foreach file : man_files
-        topic = filename.split('.')[-3].split('/')[-1]
+        path = '@0@'.format(file)
-        section = filename.split('.')[-2]
+        basename = path.split('/')[-1]
+
+        topic = basename.split('.')[-3]
+        section = basename.split('.')[-2]
         output = '@0@.@1@'.format(topic, section)
 
         custom_target(
             output,
-            input: 'man/@0@'.format(filename),
+            # drops the 'man' if `path` is an absolute path
+            input: join_paths('man', path),
             output: output,
             command: [
                 sh, '-c', '@0@ < @INPUT@ > @1@'.format(scdoc_prog.path(), output)

meson_options.txt

@@ -6,5 +6,6 @@ option('systemd', type: 'feature', value: 'auto', description: 'Install systemd
 option('dbusmenu-gtk', type: 'feature', value: 'auto', description: 'Enable support for tray')
 option('man-pages', type: 'feature', value: 'auto', description: 'Generate and install man pages')
 option('mpd', type: 'feature', value: 'auto', description: 'Enable support for the Music Player Daemon')
-option('out', type: 'string', value : '/', description: 'output prefix directory')
 option('gtk-layer-shell', type: 'feature', value: 'auto', description: 'Use gtk-layer-shell library for popups support')
+option('rfkill', type: 'feature', value: 'auto', description: 'Enable support for RFKILL')
+option('sndio', type: 'feature', value: 'auto', description: 'Enable support for sndio')

protocol/meson.build

@@ -26,6 +26,8 @@ client_protocols = [
 	[wl_protocol_dir, 'unstable/xdg-output/xdg-output-unstable-v1.xml'],
 	[wl_protocol_dir, 'unstable/idle-inhibit/idle-inhibit-unstable-v1.xml'],
 	['wlr-layer-shell-unstable-v1.xml'],
+	['wlr-foreign-toplevel-management-unstable-v1.xml'],
+	['river-status-unstable-v1.xml'],
 ]
 
 client_protos_src = []

protocol/river-status-unstable-v1.xml

@@ -0,0 +1,116 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<protocol name="river_status_unstable_v1">
+  <copyright>
+    Copyright 2020 Isaac Freund
+
+    Permission to use, copy, modify, and/or distribute this software for any
+    purpose with or without fee is hereby granted, provided that the above
+    copyright notice and this permission notice appear in all copies.
+
+    THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+    MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+  </copyright>
+
+  <interface name="zriver_status_manager_v1" version="1">
+    <description summary="manage river status objects">
+      A global factory for objects that receive status information specific
+      to river. It could be used to implement, for example, a status bar.
+    </description>
+
+    <request name="destroy" type="destructor">
+      <description summary="destroy the river_status_manager object">
+        This request indicates that the client will not use the
+        river_status_manager object any more. Objects that have been created
+        through this instance are not affected.
+      </description>
+    </request>
+
+    <request name="get_river_output_status">
+      <description summary="create an output status object">
+        This creates a new river_output_status object for the given wl_output.
+      </description>
+      <arg name="id" type="new_id" interface="zriver_output_status_v1"/>
+      <arg name="output" type="object" interface="wl_output"/>
+    </request>
+
+    <request name="get_river_seat_status">
+      <description summary="create a seat status object">
+        This creates a new river_seat_status object for the given wl_seat.
+      </description>
+      <arg name="id" type="new_id" interface="zriver_seat_status_v1"/>
+      <arg name="seat" type="object" interface="wl_seat"/>
+    </request>
+  </interface>
+
+  <interface name="zriver_output_status_v1" version="1">
+    <description summary="track output tags and focus">
+      This interface allows clients to receive information about the current
+      windowing state of an output.
+    </description>
+
+    <request name="destroy" type="destructor">
+      <description summary="destroy the river_output_status object">
+        This request indicates that the client will not use the
+        river_output_status object any more.
+      </description>
+    </request>
+
+    <event name="focused_tags">
+      <description summary="focused tags of the output">
+        Sent once binding the interface and again whenever the tag focus of
+        the output changes.
+      </description>
+      <arg name="tags" type="uint" summary="32-bit bitfield"/>
+    </event>
+
+    <event name="view_tags">
+      <description summary="tag state of an output's views">
+        Sent once on binding the interface and again whenever the tag state
+        of the output changes.
+      </description>
+      <arg name="tags" type="array" summary="array of 32-bit bitfields"/>
+    </event>
+  </interface>
+
+  <interface name="zriver_seat_status_v1" version="1">
+    <description summary="track seat focus">
+      This interface allows clients to receive information about the current
+      focus of a seat.
+    </description>
+
+    <request name="destroy" type="destructor">
+      <description summary="destroy the river_seat_status object">
+        This request indicates that the client will not use the
+        river_seat_status object any more.
+      </description>
+    </request>
+
+    <event name="focused_output">
+      <description summary="the seat focused an output">
+        Sent on binding the interface and again whenever an output gains focus.
+      </description>
+      <arg name="output" type="object" interface="wl_output"/>
+    </event>
+
+    <event name="unfocused_output">
+      <description summary="the seat unfocused an output">
+        Sent whenever an output loses focus.
+      </description>
+      <arg name="output" type="object" interface="wl_output"/>
+    </event>
+
+    <event name="focused_view">
+      <description summary="information on the focused view">
+        Sent once on binding the interface and again whenever the focused
+        view or a property thereof changes. The title may be an empty string
+        if no view is focused or the focused view did not set a title.
+      </description>
+      <arg name="title" type="string" summary="title of the focused view"/>
+    </event>
+  </interface>
+</protocol>

protocol/wlr-foreign-toplevel-management-unstable-v1.xml

@@ -0,0 +1,270 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<protocol name="wlr_foreign_toplevel_management_unstable_v1">
+  <copyright>
+    Copyright © 2018 Ilia Bozhinov
+
+    Permission to use, copy, modify, distribute, and sell this
+    software and its documentation for any purpose is hereby granted
+    without fee, provided that the above copyright notice appear in
+    all copies and that both that copyright notice and this permission
+    notice appear in supporting documentation, and that the name of
+    the copyright holders not be used in advertising or publicity
+    pertaining to distribution of the software without specific,
+    written prior permission.  The copyright holders make no
+    representations about the suitability of this software for any
+    purpose.  It is provided "as is" without express or implied
+    warranty.
+
+    THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
+    SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+    FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
+    SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
+    AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
+    ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
+    THIS SOFTWARE.
+  </copyright>
+
+  <interface name="zwlr_foreign_toplevel_manager_v1" version="3">
+    <description summary="list and control opened apps">
+      The purpose of this protocol is to enable the creation of taskbars
+      and docks by providing them with a list of opened applications and
+      letting them request certain actions on them, like maximizing, etc.
+
+      After a client binds the zwlr_foreign_toplevel_manager_v1, each opened
+      toplevel window will be sent via the toplevel event
+    </description>
+
+    <event name="toplevel">
+      <description summary="a toplevel has been created">
+        This event is emitted whenever a new toplevel window is created. It
+        is emitted for all toplevels, regardless of the app that has created
+        them.
+
+        All initial details of the toplevel(title, app_id, states, etc.) will
+        be sent immediately after this event via the corresponding events in
+        zwlr_foreign_toplevel_handle_v1.
+      </description>
+      <arg name="toplevel" type="new_id" interface="zwlr_foreign_toplevel_handle_v1"/>
+    </event>
+
+    <request name="stop">
+      <description summary="stop sending events">
+        Indicates the client no longer wishes to receive events for new toplevels.
+        However the compositor may emit further toplevel_created events, until
+        the finished event is emitted.
+
+        The client must not send any more requests after this one.
+      </description>
+    </request>
+
+    <event name="finished">
+      <description summary="the compositor has finished with the toplevel manager">
+        This event indicates that the compositor is done sending events to the
+        zwlr_foreign_toplevel_manager_v1. The server will destroy the object
+        immediately after sending this request, so it will become invalid and
+        the client should free any resources associated with it.
+      </description>
+    </event>
+  </interface>
+
+  <interface name="zwlr_foreign_toplevel_handle_v1" version="3">
+    <description summary="an opened toplevel">
+      A zwlr_foreign_toplevel_handle_v1 object represents an opened toplevel
+      window. Each app may have multiple opened toplevels.
+
+      Each toplevel has a list of outputs it is visible on, conveyed to the
+      client with the output_enter and output_leave events.
+    </description>
+
+    <event name="title">
+      <description summary="title change">
+        This event is emitted whenever the title of the toplevel changes.
+      </description>
+      <arg name="title" type="string"/>
+    </event>
+
+    <event name="app_id">
+      <description summary="app-id change">
+        This event is emitted whenever the app-id of the toplevel changes.
+      </description>
+      <arg name="app_id" type="string"/>
+    </event>
+
+    <event name="output_enter">
+      <description summary="toplevel entered an output">
+        This event is emitted whenever the toplevel becomes visible on
+        the given output. A toplevel may be visible on multiple outputs.
+      </description>
+      <arg name="output" type="object" interface="wl_output"/>
+    </event>
+
+    <event name="output_leave">
+      <description summary="toplevel left an output">
+        This event is emitted whenever the toplevel stops being visible on
+        the given output. It is guaranteed that an entered-output event
+        with the same output has been emitted before this event.
+      </description>
+      <arg name="output" type="object" interface="wl_output"/>
+    </event>
+
+    <request name="set_maximized">
+      <description summary="requests that the toplevel be maximized">
+        Requests that the toplevel be maximized. If the maximized state actually
+        changes, this will be indicated by the state event.
+      </description>
+    </request>
+
+    <request name="unset_maximized">
+      <description summary="requests that the toplevel be unmaximized">
+        Requests that the toplevel be unmaximized. If the maximized state actually
+        changes, this will be indicated by the state event.
+      </description>
+    </request>
+
+    <request name="set_minimized">
+      <description summary="requests that the toplevel be minimized">
+        Requests that the toplevel be minimized. If the minimized state actually
+        changes, this will be indicated by the state event.
+      </description>
+    </request>
+
+    <request name="unset_minimized">
+      <description summary="requests that the toplevel be unminimized">
+        Requests that the toplevel be unminimized. If the minimized state actually
+        changes, this will be indicated by the state event.
+      </description>
+    </request>
+
+    <request name="activate">
+      <description summary="activate the toplevel">
+        Request that this toplevel be activated on the given seat.
+        There is no guarantee the toplevel will be actually activated.
+      </description>
+      <arg name="seat" type="object" interface="wl_seat"/>
+    </request>
+
+    <enum name="state">
+      <description summary="types of states on the toplevel">
+        The different states that a toplevel can have. These have the same meaning
+        as the states with the same names defined in xdg-toplevel
+      </description>
+
+      <entry name="maximized"  value="0" summary="the toplevel is maximized"/>
+      <entry name="minimized"  value="1" summary="the toplevel is minimized"/>
+      <entry name="activated"  value="2" summary="the toplevel is active"/>
+      <entry name="fullscreen" value="3" summary="the toplevel is fullscreen" since="2"/>
+    </enum>
+
+    <event name="state">
+      <description summary="the toplevel state changed">
+        This event is emitted immediately after the zlw_foreign_toplevel_handle_v1
+        is created and each time the toplevel state changes, either because of a
+        compositor action or because of a request in this protocol.
+      </description>
+
+      <arg name="state" type="array"/>
+    </event>
+
+    <event name="done">
+      <description summary="all information about the toplevel has been sent">
+        This event is sent after all changes in the toplevel state have been
+        sent.
+
+        This allows changes to the zwlr_foreign_toplevel_handle_v1 properties
+        to be seen as atomic, even if they happen via multiple events.
+      </description>
+    </event>
+
+    <request name="close">
+      <description summary="request that the toplevel be closed">
+        Send a request to the toplevel to close itself. The compositor would
+        typically use a shell-specific method to carry out this request, for
+        example by sending the xdg_toplevel.close event. However, this gives
+        no guarantees the toplevel will actually be destroyed. If and when
+        this happens, the zwlr_foreign_toplevel_handle_v1.closed event will
+        be emitted.
+      </description>
+    </request>
+
+    <request name="set_rectangle">
+      <description summary="the rectangle which represents the toplevel">
+        The rectangle of the surface specified in this request corresponds to
+        the place where the app using this protocol represents the given toplevel.
+        It can be used by the compositor as a hint for some operations, e.g
+        minimizing. The client is however not required to set this, in which
+        case the compositor is free to decide some default value.
+
+        If the client specifies more than one rectangle, only the last one is
+        considered.
+
+        The dimensions are given in surface-local coordinates.
+        Setting width=height=0 removes the already-set rectangle.
+      </description>
+
+      <arg name="surface" type="object" interface="wl_surface"/>
+      <arg name="x" type="int"/>
+      <arg name="y" type="int"/>
+      <arg name="width" type="int"/>
+      <arg name="height" type="int"/>
+    </request>
+
+    <enum name="error">
+      <entry name="invalid_rectangle" value="0"
+        summary="the provided rectangle is invalid"/>
+    </enum>
+
+    <event name="closed">
+      <description summary="this toplevel has been destroyed">
+        This event means the toplevel has been destroyed. It is guaranteed there
+        won't be any more events for this zwlr_foreign_toplevel_handle_v1. The
+        toplevel itself becomes inert so any requests will be ignored except the
+        destroy request.
+      </description>
+    </event>
+
+    <request name="destroy" type="destructor">
+      <description summary="destroy the zwlr_foreign_toplevel_handle_v1 object">
+        Destroys the zwlr_foreign_toplevel_handle_v1 object.
+
+        This request should be called either when the client does not want to
+        use the toplevel anymore or after the closed event to finalize the
+        destruction of the object.
+      </description>
+    </request>
+
+    <!-- Version 2 additions -->
+
+    <request name="set_fullscreen" since="2">
+      <description summary="request that the toplevel be fullscreened">
+        Requests that the toplevel be fullscreened on the given output. If the
+        fullscreen state and/or the outputs the toplevel is visible on actually
+        change, this will be indicated by the state and output_enter/leave
+        events.
+
+        The output parameter is only a hint to the compositor. Also, if output
+        is NULL, the compositor should decide which output the toplevel will be
+        fullscreened on, if at all.
+      </description>
+      <arg name="output" type="object" interface="wl_output" allow-null="true"/>
+    </request>
+
+    <request name="unset_fullscreen" since="2">
+      <description summary="request that the toplevel be unfullscreened">
+        Requests that the toplevel be unfullscreened. If the fullscreen state
+        actually changes, this will be indicated by the state event.
+      </description>
+    </request>
+
+    <!-- Version 3 additions -->
+
+    <event name="parent" since="3">
+      <description summary="parent change">
+        This event is emitted whenever the parent of the toplevel changes.
+
+        No event is emitted when the parent handle is destroyed by the client.
+      </description>
+      <arg name="parent" type="object" interface="zwlr_foreign_toplevel_handle_v1" allow-null="true"/>
+    </event>
+  </interface>
+</protocol>

protocol/wlr-layer-shell-unstable-v1.xml

@@ -25,7 +25,7 @@
     THIS SOFTWARE.
   </copyright>
 
-  <interface name="zwlr_layer_shell_v1" version="1">
+  <interface name="zwlr_layer_shell_v1" version="3">
     <description summary="create surfaces that are layers of the desktop">
       Clients can use this interface to assign the surface_layer role to
       wl_surfaces. Such surfaces are assigned to a "layer" of the output and
@@ -82,17 +82,27 @@
       <entry name="top" value="2"/>
       <entry name="overlay" value="3"/>
     </enum>
+
+    <!-- Version 3 additions -->
+
+    <request name="destroy" type="destructor" since="3">
+      <description summary="destroy the layer_shell object">
+        This request indicates that the client will not use the layer_shell
+        object any more. Objects that have been created through this instance
+        are not affected.
+      </description>
+    </request>
   </interface>
 
-  <interface name="zwlr_layer_surface_v1" version="1">
+  <interface name="zwlr_layer_surface_v1" version="3">
     <description summary="layer metadata interface">
       An interface that may be implemented by a wl_surface, for surfaces that
       are designed to be rendered as a layer of a stacked desktop-like
       environment.
 
-      Layer surface state (size, anchor, exclusive zone, margin, interactivity)
+      Layer surface state (layer, size, anchor, exclusive zone,
-      is double-buffered, and will be applied at the time wl_surface.commit of
+      margin, interactivity) is double-buffered, and will be applied at the
-      the corresponding wl_surface is called.
+      time wl_surface.commit of the corresponding wl_surface is called.
     </description>
 
     <request name="set_size">
@@ -115,7 +125,7 @@
     <request name="set_anchor">
       <description summary="configures the anchor point of the surface">
         Requests that the compositor anchor the surface to the specified edges
-        and corners. If two orthoginal edges are specified (e.g. 'top' and
+        and corners. If two orthogonal edges are specified (e.g. 'top' and
         'left'), then the anchor point will be the intersection of the edges
         (e.g. the top left corner of the output); otherwise the anchor point
         will be centered on that edge, or in the center if none is specified.
@@ -127,20 +137,25 @@
 
     <request name="set_exclusive_zone">
       <description summary="configures the exclusive geometry of this surface">
-        Requests that the compositor avoids occluding an area of the surface
+        Requests that the compositor avoids occluding an area with other
-        with other surfaces. The compositor's use of this information is
+        surfaces. The compositor's use of this information is
         implementation-dependent - do not assume that this region will not
         actually be occluded.
 
-        A positive value is only meaningful if the surface is anchored to an
+        A positive value is only meaningful if the surface is anchored to one
-        edge, rather than a corner. The zone is the number of surface-local
+        edge or an edge and both perpendicular edges. If the surface is not
-        coordinates from the edge that are considered exclusive.
+        anchored, anchored to only two perpendicular edges (a corner), anchored
+        to only two parallel edges or anchored to all edges, a positive value
+        will be treated the same as zero.
+
+        A positive zone is the distance from the edge in surface-local
+        coordinates to consider exclusive.
 
         Surfaces that do not wish to have an exclusive zone may instead specify
         how they should interact with surfaces that do. If set to zero, the
         surface indicates that it would like to be moved to avoid occluding
-        surfaces with a positive excluzive zone. If set to -1, the surface
+        surfaces with a positive exclusive zone. If set to -1, the surface
-        indicates that it would not like to be moved to accomodate for other
+        indicates that it would not like to be moved to accommodate for other
         surfaces, and the compositor should extend it all the way to the edges
         it is anchored to.
 
@@ -281,5 +296,16 @@
       <entry name="left" value="4" summary="the left edge of the anchor rectangle"/>
       <entry name="right" value="8" summary="the right edge of the anchor rectangle"/>
     </enum>
+
+    <!-- Version 2 additions -->
+
+    <request name="set_layer" since="2">
+      <description summary="change the layer of the surface">
+        Change the layer that the surface is rendered on.
+
+        Layer is double-buffered, see wl_surface.commit.
+      </description>
+      <arg name="layer" type="uint" enum="zwlr_layer_shell_v1.layer" summary="layer to move this surface to"/>
+    </request>
   </interface>
 </protocol>

resources/config

@@ -1,12 +1,12 @@
 {
-    "layer": "top", // Waybar at top layer
+    // "layer": "top", // Waybar at top layer
     // "position": "bottom", // Waybar position (top|bottom|left|right)
     "height": 30, // Waybar height (to be removed for auto height)
     // "width": 1280, // Waybar width
     // Choose the order of the modules
     "modules-left": ["sway/workspaces", "sway/mode", "custom/media"],
     "modules-center": ["sway/window"],
-    "modules-right": ["mpd", "idle_inhibitor", "pulseaudio", "network", "cpu", "memory", "temperature", "backlight", "battery", "battery#bat2", "clock", "tray"],
+    "modules-right": ["mpd", "idle_inhibitor", "pulseaudio", "network", "cpu", "memory", "temperature", "backlight", "sway/language", "battery", "battery#bat2", "clock", "tray"],
     // Modules configuration
     // "sway/workspaces": {
     //     "disable-scroll": true,
@@ -27,7 +27,7 @@
         "format": "<span style=\"italic\">{}</span>"
     },
     "mpd": {
-        "format": "{stateIcon} {consumeIcon}{randomIcon}{repeatIcon}{singleIcon}{artist} - {album} - {title} ({elapsedTime:%M:%S}/{totalTime:%M:%S}) ",
+        "format": "{stateIcon} {consumeIcon}{randomIcon}{repeatIcon}{singleIcon}{artist} - {album} - {title} ({elapsedTime:%M:%S}/{totalTime:%M:%S}) ⸨{songPosition}|{queueLength}⸩ ",
         "format-disconnected": "Disconnected ",
         "format-stopped": "{consumeIcon}{randomIcon}{repeatIcon}{singleIcon}Stopped ",
         "unknown-tag": "N/A",

resources/style.css

@@ -41,19 +41,19 @@ window#waybar.chromium {
     padding: 0 5px;
     background-color: transparent;
     color: #ffffff;
-    border-bottom: 3px solid transparent;
+    /* Use box-shadow instead of border so the text isn't offset */
+    box-shadow: inset 0 -3px transparent;
 }
 
 /* https://github.com/Alexays/Waybar/wiki/FAQ#the-workspace-buttons-have-a-strange-hover-effect */
 #workspaces button:hover {
     background: rgba(0, 0, 0, 0.2);
-    box-shadow: inherit;
+    box-shadow: inset 0 -3px #ffffff;
-    border-bottom: 3px solid #ffffff;
 }
 
 #workspaces button.focused {
     background-color: #64727D;
-    border-bottom: 3px solid #ffffff;
+    box-shadow: inset 0 -3px #ffffff;
 }
 
 #workspaces button.urgent {
@@ -69,6 +69,7 @@ window#waybar.chromium {
 #battery,
 #cpu,
 #memory,
+#disk,
 #temperature,
 #backlight,
 #network,
@@ -83,6 +84,21 @@ window#waybar.chromium {
     color: #ffffff;
 }
 
+#window,
+#workspaces {
+    margin: 0 4px;
+}
+
+/* If workspaces is the leftmost module, omit left margin */
+.modules-left > widget:first-child > #workspaces {
+    margin-left: 0;
+}
+
+/* If workspaces is the rightmost module, omit right margin */
+.modules-right > widget:last-child > #workspaces {
+    margin-right: 0;
+}
+
 #clock {
     background-color: #64727D;
 }
@@ -92,7 +108,7 @@ window#waybar.chromium {
     color: #000000;
 }
 
-#battery.charging {
+#battery.charging, #battery.plugged {
     color: #ffffff;
     background-color: #26A65B;
 }
@@ -127,6 +143,10 @@ label:focus {
     background-color: #9b59b6;
 }
 
+#disk {
+    background-color: #964B00;
+}
+
 #backlight {
     background-color: #90b1b1;
 }
@@ -200,3 +220,11 @@ label:focus {
 #mpd.paused {
     background-color: #51a37a;
 }
+
+#language {
+    background: #00b093;
+    color: #740864;
+    padding: 0 5px;
+    margin: 0 5px;
+    min-width: 16px;
+}

resources/waybar.service.in

@@ -1,12 +1,13 @@
 [Unit]
 Description=Highly customizable Wayland bar for Sway and Wlroots based compositors.
 Documentation=https://github.com/Alexays/Waybar/wiki/
-PartOf=wayland-session.target
+PartOf=graphical-session.target
+After=graphical-session.target
 
 [Service]
-Type=dbus
-BusName=fr.arouillard.waybar
 ExecStart=@prefix@/bin/waybar
+ExecReload=kill -SIGUSR2 $MAINPID
+Restart=on-failure
 
 [Install]
-WantedBy=wayland-session.target
+WantedBy=graphical-session.target

src/ALabel.cpp

@@ -5,8 +5,9 @@
 namespace waybar {
 
 ALabel::ALabel(const Json::Value& config, const std::string& name, const std::string& id,
-               const std::string& format, uint16_t interval, bool ellipsize)
+               const std::string& format, uint16_t interval, bool ellipsize, bool enable_click,
-    : AModule(config, name, id, config["format-alt"].isString()),
+               bool enable_scroll)
+    : AModule(config, name, id, config["format-alt"].isString() || enable_click, enable_scroll),
       format_(config_["format"].isString() ? config_["format"].asString() : format),
       interval_(config_["interval"] == "once"
                     ? std::chrono::seconds(100000000)
@@ -19,19 +20,40 @@ ALabel::ALabel(const Json::Value& config, const std::string& name, const std::st
   }
   event_box_.add(label_);
   if (config_["max-length"].isUInt()) {
-    label_.set_max_width_chars(config_["max-length"].asUInt());
+    label_.set_max_width_chars(config_["max-length"].asInt());
     label_.set_ellipsize(Pango::EllipsizeMode::ELLIPSIZE_END);
+    label_.set_single_line_mode(true);
   } else if (ellipsize && label_.get_max_width_chars() == -1) {
     label_.set_ellipsize(Pango::EllipsizeMode::ELLIPSIZE_END);
+    label_.set_single_line_mode(true);
   }
 
-  if (config_["rotate"].isUInt()) {
+  if (config_["min-length"].isUInt()) {
-    label_.set_angle(config["rotate"].asUInt());
+    label_.set_width_chars(config_["min-length"].asUInt());
   }
+
+  uint rotate = 0;
+
+  if (config_["rotate"].isUInt()) {
+    rotate = config["rotate"].asUInt();
+    label_.set_angle(rotate);
+  }
+
+  if (config_["align"].isDouble()) {
+    auto align = config_["align"].asFloat();
+    if (rotate == 90 || rotate == 270) {
+      label_.set_yalign(align);
+    } else {
+      label_.set_xalign(align);
+    }
+
+  }
+
+
 }
 
 auto ALabel::update() -> void {
-  // Nothing here
+  AModule::update();
 }
 
 std::string ALabel::getIcon(uint16_t percentage, const std::string& alt, uint16_t max) {
@@ -54,6 +76,29 @@ std::string ALabel::getIcon(uint16_t percentage, const std::string& alt, uint16_
   return "";
 }
 
+std::string ALabel::getIcon(uint16_t percentage, std::vector<std::string>& alts, uint16_t max) {
+  auto format_icons = config_["format-icons"];
+  if (format_icons.isObject()) {
+    std::string _alt = "default";
+    for (const auto& alt : alts) {
+      if (!alt.empty() && (format_icons[alt].isString() || format_icons[alt].isArray())) {
+        _alt = alt;
+        break;
+      }
+    }
+    format_icons = format_icons[_alt];
+  }
+  if (format_icons.isArray()) {
+    auto size = format_icons.size();
+    auto idx = std::clamp(percentage / ((max == 0 ? 100 : max) / size), 0U, size - 1);
+    format_icons = format_icons[idx];
+  }
+  if (format_icons.isString()) {
+    return format_icons.asString();
+  }
+  return "";
+}
+
 bool waybar::ALabel::handleToggle(GdkEventButton* const& e) {
   if (config_["format-alt-click"].isUInt() && e->button == config_["format-alt-click"].asUInt()) {
     alt_ = !alt_;

src/AModule.cpp

@@ -6,7 +6,7 @@ namespace waybar {
 
 AModule::AModule(const Json::Value& config, const std::string& name, const std::string& id,
                  bool enable_click, bool enable_scroll)
-    : config_(std::move(config)) {
+    : name_(std::move(name)), config_(std::move(config)) {
   // configure events' user commands
   if (config_["on-click"].isString() || config_["on-click-middle"].isString() ||
       config_["on-click-backward"].isString() || config_["on-click-forward"].isString() ||
@@ -23,13 +23,17 @@ AModule::AModule(const Json::Value& config, const std::string& name, const std::
 AModule::~AModule() {
   for (const auto& pid : pid_) {
     if (pid != -1) {
-      kill(-pid, 9);
+      killpg(pid, SIGTERM);
     }
   }
 }
 
+
 auto AModule::update() -> void {
-  // Nothing here
+  // Run user-provided update handler if configured
+  if (config_["on-update"].isString()) {
+    pid_.push_back(util::command::forkExec(config_["on-update"].asString()));
+  }
 }
 
 bool AModule::handleToggle(GdkEventButton* const& e) {
@@ -40,9 +44,9 @@ bool AModule::handleToggle(GdkEventButton* const& e) {
     format = config_["on-click-middle"].asString();
   } else if (config_["on-click-right"].isString() && e->button == 3) {
     format = config_["on-click-right"].asString();
-  } else if (config_["on-click-forward"].isString() && e->button == 8) {
+  } else if (config_["on-click-backward"].isString() && e->button == 8) {
     format = config_["on-click-backward"].asString();
-  } else if (config_["on-click-backward"].isString() && e->button == 9) {
+  } else if (config_["on-click-forward"].isString() && e->button == 9) {
     format = config_["on-click-forward"].asString();
   }
   if (!format.empty()) {

src/bar.cpp

@@ -2,18 +2,364 @@
 #include <gtk-layer-shell.h>
 #endif
 
+#include <spdlog/spdlog.h>
+
+#include <type_traits>
+
 #include "bar.hpp"
 #include "client.hpp"
 #include "factory.hpp"
-#include <spdlog/spdlog.h>
+#include "wlr-layer-shell-unstable-v1-client-protocol.h"
+
+namespace waybar {
+static constexpr const char* MIN_HEIGHT_MSG =
+    "Requested height: {} exceeds the minimum height: {} required by the modules";
+
+static constexpr const char* MIN_WIDTH_MSG =
+    "Requested width: {} exceeds the minimum width: {} required by the modules";
+
+static constexpr const char* BAR_SIZE_MSG = "Bar configured (width: {}, height: {}) for output: {}";
+
+static constexpr const char* SIZE_DEFINED =
+    "{} size is defined in the config file so it will stay like that";
+
+#ifdef HAVE_GTK_LAYER_SHELL
+struct GLSSurfaceImpl : public BarSurface, public sigc::trackable {
+  GLSSurfaceImpl(Gtk::Window& window, struct waybar_output& output) : window_{window} {
+    output_name_ = output.name;
+    // this has to be executed before GtkWindow.realize
+    gtk_layer_init_for_window(window_.gobj());
+    gtk_layer_set_keyboard_interactivity(window.gobj(), FALSE);
+    gtk_layer_set_monitor(window_.gobj(), output.monitor->gobj());
+    gtk_layer_set_namespace(window_.gobj(), "waybar");
+
+    window.signal_configure_event().connect_notify(
+        sigc::mem_fun(*this, &GLSSurfaceImpl::onConfigure));
+  }
+
+  void setExclusiveZone(bool enable) override {
+    if (enable) {
+      gtk_layer_auto_exclusive_zone_enable(window_.gobj());
+    } else {
+      gtk_layer_set_exclusive_zone(window_.gobj(), 0);
+    }
+  }
+
+  void setMargins(const struct bar_margins& margins) override {
+    gtk_layer_set_margin(window_.gobj(), GTK_LAYER_SHELL_EDGE_LEFT, margins.left);
+    gtk_layer_set_margin(window_.gobj(), GTK_LAYER_SHELL_EDGE_RIGHT, margins.right);
+    gtk_layer_set_margin(window_.gobj(), GTK_LAYER_SHELL_EDGE_TOP, margins.top);
+    gtk_layer_set_margin(window_.gobj(), GTK_LAYER_SHELL_EDGE_BOTTOM, margins.bottom);
+  }
+
+  void setLayer(bar_layer value) override {
+    auto layer = GTK_LAYER_SHELL_LAYER_BOTTOM;
+    if (value == bar_layer::TOP) {
+      layer = GTK_LAYER_SHELL_LAYER_TOP;
+    } else if (value == bar_layer::OVERLAY) {
+      layer = GTK_LAYER_SHELL_LAYER_OVERLAY;
+    }
+    gtk_layer_set_layer(window_.gobj(), layer);
+  }
+
+  void setPosition(const std::string_view& position) override {
+    auto unanchored = GTK_LAYER_SHELL_EDGE_BOTTOM;
+    vertical_ = false;
+    if (position == "bottom") {
+      unanchored = GTK_LAYER_SHELL_EDGE_TOP;
+    } else if (position == "left") {
+      unanchored = GTK_LAYER_SHELL_EDGE_RIGHT;
+      vertical_ = true;
+    } else if (position == "right") {
+      vertical_ = true;
+      unanchored = GTK_LAYER_SHELL_EDGE_LEFT;
+    }
+    for (auto edge : {GTK_LAYER_SHELL_EDGE_LEFT,
+                      GTK_LAYER_SHELL_EDGE_RIGHT,
+                      GTK_LAYER_SHELL_EDGE_TOP,
+                      GTK_LAYER_SHELL_EDGE_BOTTOM}) {
+      gtk_layer_set_anchor(window_.gobj(), edge, unanchored != edge);
+    }
+  }
+
+  void setSize(uint32_t width, uint32_t height) override {
+    width_ = width;
+    height_ = height;
+    window_.set_size_request(width_, height_);
+  };
+
+ private:
+  Gtk::Window& window_;
+  std::string  output_name_;
+  uint32_t     width_;
+  uint32_t     height_;
+  bool         vertical_ = false;
+
+  void onConfigure(GdkEventConfigure* ev) {
+    /*
+     * GTK wants new size for the window.
+     * Actual resizing and management of the exclusve zone is handled within the gtk-layer-shell
+     * code. This event handler only updates stored size of the window and prints some warnings.
+     *
+     * Note: forced resizing to a window smaller than required by GTK would not work with
+     * gtk-layer-shell.
+     */
+    if (vertical_) {
+      if (width_ > 1 && ev->width > static_cast<int>(width_)) {
+        spdlog::warn(MIN_WIDTH_MSG, width_, ev->width);
+      }
+    } else {
+      if (height_ > 1 && ev->height > static_cast<int>(height_)) {
+        spdlog::warn(MIN_HEIGHT_MSG, height_, ev->height);
+      }
+    }
+    width_ = ev->width;
+    height_ = ev->height;
+    spdlog::info(BAR_SIZE_MSG, width_, height_, output_name_);
+  }
+};
+#endif
+
+struct RawSurfaceImpl : public BarSurface, public sigc::trackable {
+  RawSurfaceImpl(Gtk::Window& window, struct waybar_output& output) : window_{window} {
+    output_ = gdk_wayland_monitor_get_wl_output(output.monitor->gobj());
+    output_name_ = output.name;
+
+    window.signal_realize().connect_notify(sigc::mem_fun(*this, &RawSurfaceImpl::onRealize));
+    window.signal_map_event().connect_notify(sigc::mem_fun(*this, &RawSurfaceImpl::onMap));
+    window.signal_configure_event().connect_notify(
+        sigc::mem_fun(*this, &RawSurfaceImpl::onConfigure));
+
+    if (window.get_realized()) {
+      onRealize();
+    }
+  }
+
+  void setExclusiveZone(bool enable) override {
+    exclusive_zone_ = enable;
+    if (layer_surface_) {
+      auto zone = 0;
+      if (enable) {
+        // exclusive zone already includes margin for anchored edge,
+        // only opposite margin should be added
+        if ((anchor_ & VERTICAL_ANCHOR) == VERTICAL_ANCHOR) {
+          zone += width_;
+          zone += (anchor_ & ZWLR_LAYER_SURFACE_V1_ANCHOR_LEFT) ? margins_.right : margins_.left;
+        } else {
+          zone += height_;
+          zone += (anchor_ & ZWLR_LAYER_SURFACE_V1_ANCHOR_TOP) ? margins_.bottom : margins_.top;
+        }
+      }
+      spdlog::debug("Set exclusive zone {} for output {}", zone, output_name_);
+      zwlr_layer_surface_v1_set_exclusive_zone(layer_surface_.get(), zone);
+    }
+  }
+
+  void setLayer(bar_layer layer) override {
+    layer_ = ZWLR_LAYER_SHELL_V1_LAYER_BOTTOM;
+    if (layer == bar_layer::TOP) {
+      layer_ = ZWLR_LAYER_SHELL_V1_LAYER_TOP;
+    } else if (layer == bar_layer::OVERLAY) {
+      layer_ = ZWLR_LAYER_SHELL_V1_LAYER_OVERLAY;
+    }
+    // updating already mapped window
+    if (layer_surface_) {
+      if (zwlr_layer_surface_v1_get_version(layer_surface_.get()) >=
+          ZWLR_LAYER_SURFACE_V1_SET_LAYER_SINCE_VERSION) {
+        zwlr_layer_surface_v1_set_layer(layer_surface_.get(), layer_);
+      } else {
+        spdlog::warn("Unable to change layer: layer-shell implementation is too old");
+      }
+    }
+  }
+
+  void setMargins(const struct bar_margins& margins) override {
+    margins_ = margins;
+    // updating already mapped window
+    if (layer_surface_) {
+      zwlr_layer_surface_v1_set_margin(
+          layer_surface_.get(), margins_.top, margins_.right, margins_.bottom, margins_.left);
+    }
+  }
+
+  void setPosition(const std::string_view& position) override {
+    anchor_ = HORIZONTAL_ANCHOR | ZWLR_LAYER_SURFACE_V1_ANCHOR_TOP;
+    if (position == "bottom") {
+      anchor_ = HORIZONTAL_ANCHOR | ZWLR_LAYER_SURFACE_V1_ANCHOR_BOTTOM;
+    } else if (position == "left") {
+      anchor_ = VERTICAL_ANCHOR | ZWLR_LAYER_SURFACE_V1_ANCHOR_LEFT;
+    } else if (position == "right") {
+      anchor_ = VERTICAL_ANCHOR | ZWLR_LAYER_SURFACE_V1_ANCHOR_RIGHT;
+    }
+
+    // updating already mapped window
+    if (layer_surface_) {
+      zwlr_layer_surface_v1_set_anchor(layer_surface_.get(), anchor_);
+    }
+  }
+
+  void setSize(uint32_t width, uint32_t height) override {
+    configured_width_ = width_ = width;
+    configured_height_ = height_ = height;
+    // layer_shell.configure handler should update exclusive zone if size changes
+    window_.set_size_request(width, height);
+  };
+
+  void commit() override {
+    if (surface_) {
+      wl_surface_commit(surface_);
+    }
+  }
+
+ private:
+  constexpr static uint8_t VERTICAL_ANCHOR =
+      ZWLR_LAYER_SURFACE_V1_ANCHOR_TOP | ZWLR_LAYER_SURFACE_V1_ANCHOR_BOTTOM;
+  constexpr static uint8_t HORIZONTAL_ANCHOR =
+      ZWLR_LAYER_SURFACE_V1_ANCHOR_LEFT | ZWLR_LAYER_SURFACE_V1_ANCHOR_RIGHT;
+
+  template <auto fn>
+  using deleter_fn = std::integral_constant<decltype(fn), fn>;
+  using layer_surface_ptr =
+      std::unique_ptr<zwlr_layer_surface_v1, deleter_fn<zwlr_layer_surface_v1_destroy>>;
+
+  Gtk::Window&       window_;
+  std::string        output_name_;
+  uint32_t           configured_width_ = 0;
+  uint32_t           configured_height_ = 0;
+  uint32_t           width_ = 0;
+  uint32_t           height_ = 0;
+  uint8_t            anchor_ = HORIZONTAL_ANCHOR | ZWLR_LAYER_SURFACE_V1_ANCHOR_TOP;
+  bool               exclusive_zone_ = true;
+  struct bar_margins margins_;
+
+  zwlr_layer_shell_v1_layer layer_ = ZWLR_LAYER_SHELL_V1_LAYER_BOTTOM;
+  struct wl_output*         output_ = nullptr;   // owned by GTK
+  struct wl_surface*        surface_ = nullptr;  // owned by GTK
+  layer_surface_ptr         layer_surface_;
+
+  void onRealize() {
+    auto gdk_window = window_.get_window()->gobj();
+    gdk_wayland_window_set_use_custom_surface(gdk_window);
+  }
+
+  void onMap(GdkEventAny* ev) {
+    static const struct zwlr_layer_surface_v1_listener layer_surface_listener = {
+        .configure = onSurfaceConfigure,
+        .closed = onSurfaceClosed,
+    };
+    auto client = Client::inst();
+    auto gdk_window = window_.get_window()->gobj();
+    surface_ = gdk_wayland_window_get_wl_surface(gdk_window);
+
+    layer_surface_.reset(zwlr_layer_shell_v1_get_layer_surface(
+        client->layer_shell, surface_, output_, layer_, "waybar"));
+
+    zwlr_layer_surface_v1_add_listener(layer_surface_.get(), &layer_surface_listener, this);
+    zwlr_layer_surface_v1_set_keyboard_interactivity(layer_surface_.get(), false);
+    zwlr_layer_surface_v1_set_anchor(layer_surface_.get(), anchor_);
+    zwlr_layer_surface_v1_set_margin(
+        layer_surface_.get(), margins_.top, margins_.right, margins_.bottom, margins_.left);
+
+    setSurfaceSize(width_, height_);
+    setExclusiveZone(exclusive_zone_);
+
+    commit();
+    wl_display_roundtrip(client->wl_display);
+  }
+
+  void onConfigure(GdkEventConfigure* ev) {
+    /*
+     * GTK wants new size for the window.
+     *
+     * Prefer configured size if it's non-default.
+     * If the size is not set and the window is smaller than requested by GTK, request resize from
+     * layer surface.
+     */
+    auto tmp_height = height_;
+    auto tmp_width = width_;
+    if (ev->height > static_cast<int>(height_)) {
+      // Default minimal value
+      if (height_ > 1) {
+        spdlog::warn(MIN_HEIGHT_MSG, height_, ev->height);
+      }
+      if (configured_height_ > 1) {
+        spdlog::info(SIZE_DEFINED, "Height");
+      } else {
+        tmp_height = ev->height;
+      }
+    }
+    if (ev->width > static_cast<int>(width_)) {
+      // Default minimal value
+      if (width_ > 1) {
+        spdlog::warn(MIN_WIDTH_MSG, width_, ev->width);
+      }
+      if (configured_width_ > 1) {
+        spdlog::info(SIZE_DEFINED, "Width");
+      } else {
+        tmp_width = ev->width;
+      }
+    }
+    if (tmp_width != width_ || tmp_height != height_) {
+      setSurfaceSize(tmp_width, tmp_height);
+      commit();
+    }
+  }
+
+  void setSurfaceSize(uint32_t width, uint32_t height) {
+    /* If the client is anchored to two opposite edges, layer_surface.configure will return
+     * size without margins for the axis.
+     * layer_surface.set_size, however, expects size with margins for the anchored axis.
+     * This is not specified by wlr-layer-shell and based on actual behavior of sway.
+     *
+     * If the size for unanchored axis is not set (0), change request to 1 to avoid automatic
+     * assignment by the compositor.
+     */
+    if ((anchor_ & VERTICAL_ANCHOR) == VERTICAL_ANCHOR) {
+      width = width > 0 ? width : 1;
+      if (height > 1) {
+        height += margins_.top + margins_.bottom;
+      }
+    } else {
+      height = height > 0 ? height : 1;
+      if (width > 1) {
+        width += margins_.right + margins_.left;
+      }
+    }
+    spdlog::debug("Set surface size {}x{} for output {}", width, height, output_name_);
+    zwlr_layer_surface_v1_set_size(layer_surface_.get(), width, height);
+  }
+
+  static void onSurfaceConfigure(void* data, struct zwlr_layer_surface_v1* surface, uint32_t serial,
+                                 uint32_t width, uint32_t height) {
+    auto o = static_cast<RawSurfaceImpl*>(data);
+    if (width != o->width_ || height != o->height_) {
+      o->width_ = width;
+      o->height_ = height;
+      o->window_.set_size_request(o->width_, o->height_);
+      o->window_.resize(o->width_, o->height_);
+      o->setExclusiveZone(o->exclusive_zone_);
+      spdlog::info(BAR_SIZE_MSG,
+                   o->width_ == 1 ? "auto" : std::to_string(o->width_),
+                   o->height_ == 1 ? "auto" : std::to_string(o->height_),
+                   o->output_name_);
+      o->commit();
+    }
+    zwlr_layer_surface_v1_ack_configure(surface, serial);
+  }
+
+  static void onSurfaceClosed(void* data, struct zwlr_layer_surface_v1* /* surface */) {
+    auto o = static_cast<RawSurfaceImpl*>(data);
+    o->layer_surface_.reset();
+  }
+};
+
+};  // namespace waybar
 
 waybar::Bar::Bar(struct waybar_output* w_output, const Json::Value& w_config)
     : output(w_output),
       config(w_config),
       window{Gtk::WindowType::WINDOW_TOPLEVEL},
-      surface(nullptr),
+      layer_{bar_layer::BOTTOM},
-      layer_surface_(nullptr),
-      anchor_(ZWLR_LAYER_SURFACE_V1_ANCHOR_TOP),
       left_(Gtk::ORIENTATION_HORIZONTAL, 0),
       center_(Gtk::ORIENTATION_HORIZONTAL, 0),
       right_(Gtk::ORIENTATION_HORIZONTAL, 0),
@@ -25,26 +371,15 @@ waybar::Bar::Bar(struct waybar_output* w_output, const Json::Value& w_config)
   window.get_style_context()->add_class(config["name"].asString());
   window.get_style_context()->add_class(config["position"].asString());
 
-  if (config["position"] == "right" || config["position"] == "left") {
+  if (config["layer"] == "top") {
-    height_ = 0;
+    layer_ = bar_layer::TOP;
-    width_ = 1;
+  } else if (config["layer"] == "overlay") {
+    layer_ = bar_layer::OVERLAY;
   }
-  height_ = config["height"].isUInt() ? config["height"].asUInt() : height_;
-  width_ = config["width"].isUInt() ? config["width"].asUInt() : width_;
 
-  if (config["position"] == "bottom") {
+  auto position = config["position"].asString();
-    anchor_ = ZWLR_LAYER_SURFACE_V1_ANCHOR_BOTTOM;
+
-  } else if (config["position"] == "left") {
+  if (position == "right" || position == "left") {
-    anchor_ = ZWLR_LAYER_SURFACE_V1_ANCHOR_LEFT;
-  } else if (config["position"] == "right") {
-    anchor_ = ZWLR_LAYER_SURFACE_V1_ANCHOR_RIGHT;
-  }
-  if (anchor_ == ZWLR_LAYER_SURFACE_V1_ANCHOR_BOTTOM ||
-      anchor_ == ZWLR_LAYER_SURFACE_V1_ANCHOR_TOP) {
-    anchor_ |= ZWLR_LAYER_SURFACE_V1_ANCHOR_LEFT | ZWLR_LAYER_SURFACE_V1_ANCHOR_RIGHT;
-  } else if (anchor_ == ZWLR_LAYER_SURFACE_V1_ANCHOR_LEFT ||
-             anchor_ == ZWLR_LAYER_SURFACE_V1_ANCHOR_RIGHT) {
-    anchor_ |= ZWLR_LAYER_SURFACE_V1_ANCHOR_TOP | ZWLR_LAYER_SURFACE_V1_ANCHOR_BOTTOM;
     left_ = Gtk::Box(Gtk::ORIENTATION_VERTICAL, 0);
     center_ = Gtk::Box(Gtk::ORIENTATION_VERTICAL, 0);
     right_ = Gtk::Box(Gtk::ORIENTATION_VERTICAL, 0);
@@ -52,6 +387,15 @@ waybar::Bar::Bar(struct waybar_output* w_output, const Json::Value& w_config)
     vertical = true;
   }
   
+  left_.get_style_context()->add_class("modules-left");
+  center_.get_style_context()->add_class("modules-center");
+  right_.get_style_context()->add_class("modules-right");
+
+  uint32_t height = config["height"].isUInt() ? config["height"].asUInt() : 0;
+  uint32_t width = config["width"].isUInt() ? config["width"].asUInt() : 0;
+
+  struct bar_margins margins_;
+
   if (config["margin-top"].isInt() || config["margin-right"].isInt() ||
       config["margin-bottom"].isInt() || config["margin-left"].isInt()) {
     margins_ = {
@@ -98,165 +442,62 @@ waybar::Bar::Bar(struct waybar_output* w_output, const Json::Value& w_config)
   }
 
 #ifdef HAVE_GTK_LAYER_SHELL
-  use_gls_ = config["gtk-layer-shell"].isBool() ? config["gtk-layer-shell"].asBool() : true;
+  bool use_gls = config["gtk-layer-shell"].isBool() ? config["gtk-layer-shell"].asBool() : true;
-  if (use_gls_) {
+  if (use_gls) {
-    initGtkLayerShell();
+    surface_impl_ = std::make_unique<GLSSurfaceImpl>(window, *output);
-  }
-#endif
-
-  window.signal_realize().connect_notify(sigc::mem_fun(*this, &Bar::onRealize));
-  window.signal_map_event().connect_notify(sigc::mem_fun(*this, &Bar::onMap));
-  window.signal_configure_event().connect_notify(sigc::mem_fun(*this, &Bar::onConfigure));
-  window.set_size_request(width_, height_);
-  setupWidgets();
-
-  if (window.get_realized()) {
-    onRealize();
-  }
-  window.show_all();
-}
-
-void waybar::Bar::onConfigure(GdkEventConfigure* ev) {
-  auto tmp_height = height_;
-  auto tmp_width = width_;
-  if (ev->height > static_cast<int>(height_)) {
-    // Default minimal value
-    if (height_ != 1) {
-      spdlog::warn(MIN_HEIGHT_MSG, height_, ev->height);
-    }
-    if (config["height"].isUInt()) {
-      spdlog::info(SIZE_DEFINED, "Height");
-    } else {
-      tmp_height = ev->height;
-    }
-  }
-  if (ev->width > static_cast<int>(width_)) {
-    // Default minimal value
-    if (width_ != 1) {
-      spdlog::warn(MIN_WIDTH_MSG, width_, ev->width);
-    }
-    if (config["width"].isUInt()) {
-      spdlog::info(SIZE_DEFINED, "Width");
-    } else {
-      tmp_width = ev->width;
-    }
-  }
-  if (use_gls_) {
-    width_ = tmp_width;
-    height_ = tmp_height;
-    spdlog::debug("Set surface size {}x{} for output {}", width_, height_, output->name);
-    setExclusiveZone(tmp_width, tmp_height);
-  } else if (tmp_width != width_ || tmp_height != height_) {
-    setSurfaceSize(tmp_width, tmp_height);
-  }
-}
-
-#ifdef HAVE_GTK_LAYER_SHELL
-void waybar::Bar::initGtkLayerShell() {
-  auto gtk_window = window.gobj();
-  // this has to be executed before GtkWindow.realize
-  gtk_layer_init_for_window(gtk_window);
-  gtk_layer_set_keyboard_interactivity(gtk_window, FALSE);
-  auto layer = config["layer"] == "top" ? GTK_LAYER_SHELL_LAYER_TOP : GTK_LAYER_SHELL_LAYER_BOTTOM;
-  gtk_layer_set_layer(gtk_window, layer);
-  gtk_layer_set_monitor(gtk_window, output->monitor->gobj());
-  gtk_layer_set_namespace(gtk_window, "waybar");
-
-  gtk_layer_set_anchor(
-      gtk_window, GTK_LAYER_SHELL_EDGE_LEFT, anchor_ & ZWLR_LAYER_SURFACE_V1_ANCHOR_LEFT);
-  gtk_layer_set_anchor(
-      gtk_window, GTK_LAYER_SHELL_EDGE_RIGHT, anchor_ & ZWLR_LAYER_SURFACE_V1_ANCHOR_RIGHT);
-  gtk_layer_set_anchor(
-      gtk_window, GTK_LAYER_SHELL_EDGE_TOP, anchor_ & ZWLR_LAYER_SURFACE_V1_ANCHOR_TOP);
-  gtk_layer_set_anchor(
-      gtk_window, GTK_LAYER_SHELL_EDGE_BOTTOM, anchor_ & ZWLR_LAYER_SURFACE_V1_ANCHOR_BOTTOM);
-
-  gtk_layer_set_margin(gtk_window, GTK_LAYER_SHELL_EDGE_LEFT, margins_.left);
-  gtk_layer_set_margin(gtk_window, GTK_LAYER_SHELL_EDGE_RIGHT, margins_.right);
-  gtk_layer_set_margin(gtk_window, GTK_LAYER_SHELL_EDGE_TOP, margins_.top);
-  gtk_layer_set_margin(gtk_window, GTK_LAYER_SHELL_EDGE_BOTTOM, margins_.bottom);
-}
-#endif
-
-void waybar::Bar::onRealize() {
-  auto gdk_window = window.get_window()->gobj();
-  gdk_wayland_window_set_use_custom_surface(gdk_window);
-}
-
-void waybar::Bar::onMap(GdkEventAny* ev) {
-  auto gdk_window = window.get_window()->gobj();
-  surface = gdk_wayland_window_get_wl_surface(gdk_window);
-
-  if (use_gls_) {
-    return;
-  }
-
-  auto client = waybar::Client::inst();
-  // owned by output->monitor; no need to destroy
-  auto wl_output = gdk_wayland_monitor_get_wl_output(output->monitor->gobj());
-  auto layer =
-      config["layer"] == "top" ? ZWLR_LAYER_SHELL_V1_LAYER_TOP : ZWLR_LAYER_SHELL_V1_LAYER_BOTTOM;
-  layer_surface_ = zwlr_layer_shell_v1_get_layer_surface(
-      client->layer_shell, surface, wl_output, layer, "waybar");
-
-  zwlr_layer_surface_v1_set_keyboard_interactivity(layer_surface_, false);
-  zwlr_layer_surface_v1_set_anchor(layer_surface_, anchor_);
-  zwlr_layer_surface_v1_set_margin(
-      layer_surface_, margins_.top, margins_.right, margins_.bottom, margins_.left);
-  setSurfaceSize(width_, height_);
-  setExclusiveZone(width_, height_);
-
-  static const struct zwlr_layer_surface_v1_listener layer_surface_listener = {
-      .configure = layerSurfaceHandleConfigure,
-      .closed = layerSurfaceHandleClosed,
-  };
-  zwlr_layer_surface_v1_add_listener(layer_surface_, &layer_surface_listener, this);
-
-  wl_surface_commit(surface);
-  wl_display_roundtrip(client->wl_display);
-}
-
-void waybar::Bar::setExclusiveZone(uint32_t width, uint32_t height) {
-  auto zone = 0;
-  if (visible) {
-    // exclusive zone already includes margin for anchored edge,
-    // only opposite margin should be added
-    if (vertical) {
-      zone += width;
-      zone += (anchor_ & ZWLR_LAYER_SURFACE_V1_ANCHOR_LEFT) ? margins_.right : margins_.left;
-    } else {
-      zone += height;
-      zone += (anchor_ & ZWLR_LAYER_SURFACE_V1_ANCHOR_TOP) ? margins_.bottom : margins_.top;
-    }
-  }
-  spdlog::debug("Set exclusive zone {} for output {}", zone, output->name);
-
-#ifdef HAVE_GTK_LAYER_SHELL
-  if (use_gls_) {
-    gtk_layer_set_exclusive_zone(window.gobj(), zone);
   } else
 #endif
   {
-    zwlr_layer_surface_v1_set_exclusive_zone(layer_surface_, zone);
+    surface_impl_ = std::make_unique<RawSurfaceImpl>(window, *output);
+  }
+
+  surface_impl_->setLayer(layer_);
+  surface_impl_->setExclusiveZone(true);
+  surface_impl_->setMargins(margins_);
+  surface_impl_->setPosition(position);
+  surface_impl_->setSize(width, height);
+
+  window.signal_map_event().connect_notify(sigc::mem_fun(*this, &Bar::onMap));
+
+  setupWidgets();
+  window.show_all();
+
+  if (spdlog::should_log(spdlog::level::debug)) {
+    // Unfortunately, this function isn't in the C++ bindings, so we have to call the C version.
+    char* gtk_tree = gtk_style_context_to_string(
+        window.get_style_context()->gobj(),
+        (GtkStyleContextPrintFlags)(GTK_STYLE_CONTEXT_PRINT_RECURSE |
+                                    GTK_STYLE_CONTEXT_PRINT_SHOW_STYLE));
+    spdlog::debug("GTK widget tree:\n{}", gtk_tree);
+    g_free(gtk_tree);
   }
 }
 
-void waybar::Bar::setSurfaceSize(uint32_t width, uint32_t height) {
+void waybar::Bar::onMap(GdkEventAny*) {
-  /* If the client is anchored to two opposite edges, layer_surface.configure will return
+  /*
-   * size without margins for the axis.
+   * Obtain a pointer to the custom layer surface for modules that require it (idle_inhibitor).
-   * layer_surface.set_size, however, expects size with margins for the anchored axis.
-   * This is not specified by wlr-layer-shell and based on actual behavior of sway.
    */
-  if (vertical && height > 1) {
+  auto gdk_window = window.get_window()->gobj();
-    height += margins_.top + margins_.bottom;
+  surface = gdk_wayland_window_get_wl_surface(gdk_window);
-  }
-  if (!vertical && width > 1) {
-    width += margins_.right + margins_.left;
-  }
-  spdlog::debug("Set surface size {}x{} for output {}", width, height, output->name);
-  zwlr_layer_surface_v1_set_size(layer_surface_, width, height);
 }
 
+void waybar::Bar::setVisible(bool value) {
+  visible = value;
+  if (!visible) {
+    window.get_style_context()->add_class("hidden");
+    window.set_opacity(0);
+    surface_impl_->setLayer(bar_layer::BOTTOM);
+  } else {
+    window.get_style_context()->remove_class("hidden");
+    window.set_opacity(1);
+    surface_impl_->setLayer(layer_);
+  }
+  surface_impl_->setExclusiveZone(visible);
+  surface_impl_->commit();
+}
+
+void waybar::Bar::toggle() { setVisible(!visible); }
+
 // Converting string to button code rn as to avoid doing it later
 void waybar::Bar::setupAltFormatKeyForModule(const std::string& module_name) {
   if (config.isMember(module_name)) {
@@ -318,48 +559,6 @@ void waybar::Bar::handleSignal(int signal) {
   }
 }
 
-void waybar::Bar::layerSurfaceHandleConfigure(void* data, struct zwlr_layer_surface_v1* surface,
-                                              uint32_t serial, uint32_t width, uint32_t height) {
-  auto o = static_cast<waybar::Bar*>(data);
-  if (width != o->width_ || height != o->height_) {
-    o->width_ = width;
-    o->height_ = height;
-    o->window.set_size_request(o->width_, o->height_);
-    o->window.resize(o->width_, o->height_);
-    o->setExclusiveZone(width, height);
-    spdlog::info(BAR_SIZE_MSG,
-                 o->width_ == 1 ? "auto" : std::to_string(o->width_),
-                 o->height_ == 1 ? "auto" : std::to_string(o->height_),
-                 o->output->name);
-    wl_surface_commit(o->surface);
-  }
-  zwlr_layer_surface_v1_ack_configure(surface, serial);
-}
-
-void waybar::Bar::layerSurfaceHandleClosed(void* data, struct zwlr_layer_surface_v1* /*surface*/) {
-  auto o = static_cast<waybar::Bar*>(data);
-  if (o->layer_surface_) {
-    zwlr_layer_surface_v1_destroy(o->layer_surface_);
-    o->layer_surface_ = nullptr;
-  }
-  o->modules_left_.clear();
-  o->modules_center_.clear();
-  o->modules_right_.clear();
-}
-
-auto waybar::Bar::toggle() -> void {
-  visible = !visible;
-  if (!visible) {
-    window.get_style_context()->add_class("hidden");
-    window.set_opacity(0);
-  } else {
-    window.get_style_context()->remove_class("hidden");
-    window.set_opacity(1);
-  }
-  setExclusiveZone(width_, height_);
-  wl_surface_commit(surface);
-}
-
 void waybar::Bar::getModules(const Factory& factory, const std::string& pos) {
   if (config[pos].isArray()) {
     for (const auto& name : config[pos]) {

src/client.cpp

@@ -1,10 +1,15 @@
 #include "client.hpp"
+
 #include <fmt/ostream.h>
 #include <spdlog/spdlog.h>
+
 #include <fstream>
 #include <iostream>
+
+#include "idle-inhibit-unstable-v1-client-protocol.h"
 #include "util/clara.hpp"
 #include "util/json.hpp"
+#include "wlr-layer-shell-unstable-v1-client-protocol.h"
 
 waybar::Client *waybar::Client::inst() {
   static auto c = new Client();
@@ -32,6 +37,8 @@ void waybar::Client::handleGlobal(void *data, struct wl_registry *registry, uint
                                   const char *interface, uint32_t version) {
   auto client = static_cast<Client *>(data);
   if (strcmp(interface, zwlr_layer_shell_v1_interface.name) == 0) {
+    // limit version to a highest supported by the client protocol file
+    version = std::min<uint32_t>(version, zwlr_layer_shell_v1_interface.version);
     client->layer_shell = static_cast<struct zwlr_layer_shell_v1 *>(
         wl_registry_bind(registry, name, &zwlr_layer_shell_v1_interface, version));
   } else if (strcmp(interface, zxdg_output_manager_v1_interface.name) == 0 &&
@@ -53,9 +60,9 @@ void waybar::Client::handleOutput(struct waybar_output &output) {
   static const struct zxdg_output_v1_listener xdgOutputListener = {
       .logical_position = [](void *, struct zxdg_output_v1 *, int32_t, int32_t) {},
       .logical_size = [](void *, struct zxdg_output_v1 *, int32_t, int32_t) {},
-      .done = [](void *, struct zxdg_output_v1 *) {},
+      .done = &handleOutputDone,
       .name = &handleOutputName,
-      .description = [](void *, struct zxdg_output_v1 *, const char *) {},
+      .description = &handleOutputDescription,
   };
   // owned by output->monitor; no need to destroy
   auto wl_output = gdk_wayland_monitor_get_wl_output(output.monitor->gobj());
@@ -64,21 +71,26 @@ void waybar::Client::handleOutput(struct waybar_output &output) {
 }
 
 bool waybar::Client::isValidOutput(const Json::Value &config, struct waybar_output &output) {
-  bool found = true;
   if (config["output"].isArray()) {
-    bool in_array = false;
     for (auto const &output_conf : config["output"]) {
-      if (output_conf.isString() && output_conf.asString() == output.name) {
+      if (output_conf.isString() &&
-        in_array = true;
+          (output_conf.asString() == output.name || output_conf.asString() == output.identifier)) {
-        break;
+        return true;
       }
     }
-    found = in_array;
+    return false;
+  } else if (config["output"].isString()) {
+    auto config_output = config["output"].asString();
+    if (!config_output.empty()) {
+      if (config_output.substr(0, 1) == "!") {
+        return config_output.substr(1) != output.name &&
+               config_output.substr(1) != output.identifier;
       }
-  if (config["output"].isString() && config["output"].asString() != output.name) {
+      return config_output == output.name || config_output == output.identifier;
-    found = false;
     }
-  return found;
+  }
+
+  return true;
 }
 
 struct waybar::waybar_output &waybar::Client::getOutput(void *addr) {
@@ -104,28 +116,56 @@ std::vector<Json::Value> waybar::Client::getOutputConfigs(struct waybar_output &
   return configs;
 }
 
+void waybar::Client::handleOutputDone(void *data, struct zxdg_output_v1 * /*xdg_output*/) {
+  auto client = waybar::Client::inst();
+  try {
+    auto &output = client->getOutput(data);
+    /**
+     * Multiple .done events may arrive in batch. In this case libwayland would queue
+     * xdg_output.destroy and dispatch all pending events, triggering this callback several times
+     * for the same output. .done events can also arrive after that for a scale or position changes.
+     * We wouldn't want to draw a duplicate bar for each such event either.
+     *
+     * All the properties we care about are immutable so it's safe to delete the xdg_output object
+     * on the first event and use the ptr value to check that the callback was already invoked.
+     */
+    if (output.xdg_output) {
+      output.xdg_output.reset();
+      spdlog::debug("Output detection done: {} ({})", output.name, output.identifier);
+
+      auto configs = client->getOutputConfigs(output);
+      if (!configs.empty()) {
+        for (const auto &config : configs) {
+          client->bars.emplace_back(std::make_unique<Bar>(&output, config));
+        }
+      }
+    }
+  } catch (const std::exception &e) {
+    std::cerr << e.what() << std::endl;
+  }
+}
+
 void waybar::Client::handleOutputName(void *      data, struct zxdg_output_v1 * /*xdg_output*/,
                                       const char *name) {
   auto client = waybar::Client::inst();
   try {
     auto &output = client->getOutput(data);
     output.name = name;
-    spdlog::debug("Output detected: {} ({} {})",
+  } catch (const std::exception &e) {
-                  name,
+    std::cerr << e.what() << std::endl;
-                  output.monitor->get_manufacturer(),
-                  output.monitor->get_model());
-    auto configs = client->getOutputConfigs(output);
-    if (configs.empty()) {
-      output.xdg_output.reset();
-    } else {
-      wl_display_roundtrip(client->wl_display);
-      for (const auto &config : configs) {
-        client->bars.emplace_back(std::make_unique<Bar>(&output, config));
-        Glib::RefPtr<Gdk::Screen> screen = client->bars.back()->window.get_screen();
-        client->style_context_->add_provider_for_screen(
-            screen, client->css_provider_, GTK_STYLE_PROVIDER_PRIORITY_USER);
-      }
   }
+}
+
+void waybar::Client::handleOutputDescription(void *data, struct zxdg_output_v1 * /*xdg_output*/,
+                                             const char *description) {
+  auto client = waybar::Client::inst();
+  try {
+    auto &      output = client->getOutput(data);
+    const char *open_paren = strrchr(description, '(');
+
+    // Description format: "identifier (name)"
+    size_t identifier_length = open_paren - description;
+    output.identifier = std::string(description, identifier_length - 1);
   } catch (const std::exception &e) {
     std::cerr << e.what() << std::endl;
   }
@@ -139,10 +179,21 @@ void waybar::Client::handleMonitorAdded(Glib::RefPtr<Gdk::Monitor> monitor) {
 
 void waybar::Client::handleMonitorRemoved(Glib::RefPtr<Gdk::Monitor> monitor) {
   spdlog::debug("Output removed: {} {}", monitor->get_manufacturer(), monitor->get_model());
+  /* This event can be triggered from wl_display_roundtrip called by GTK or our code.
+   * Defer destruction of bars for the output to the next iteration of the event loop to avoid
+   * deleting objects referenced by currently executed code.
+   */
+  Glib::signal_idle().connect_once(
+      sigc::bind(sigc::mem_fun(*this, &Client::handleDeferredMonitorRemoval), monitor),
+      Glib::PRIORITY_HIGH_IDLE);
+}
+
+void waybar::Client::handleDeferredMonitorRemoval(Glib::RefPtr<Gdk::Monitor> monitor) {
   for (auto it = bars.begin(); it != bars.end();) {
     if ((*it)->output->monitor == monitor) {
       auto output_name = (*it)->output->name;
-      (*it)->window.close();
+      (*it)->window.hide();
+      gtk_app->remove_window((*it)->window);
       it = bars.erase(it);
       spdlog::info("Bar removed from output: {}", output_name);
     } else {
@@ -159,6 +210,7 @@ std::tuple<const std::string, const std::string> waybar::Client::getConfigs(
                                           "$HOME/.config/waybar/config",
                                           "$HOME/waybar/config",
                                           "/etc/xdg/waybar/config",
+                                          SYSCONFDIR "/xdg/waybar/config",
                                           "./resources/config",
                                       })
                                     : config;
@@ -167,6 +219,7 @@ std::tuple<const std::string, const std::string> waybar::Client::getConfigs(
                                       "$HOME/.config/waybar/style.css",
                                       "$HOME/waybar/style.css",
                                       "/etc/xdg/waybar/style.css",
+                                      SYSCONFDIR "/xdg/waybar/style.css",
                                       "./resources/style.css",
                                   })
                                 : style;
@@ -195,6 +248,9 @@ auto waybar::Client::setupCss(const std::string &css_file) -> void {
   if (!css_provider_->load_from_path(css_file)) {
     throw std::runtime_error("Can't open style file");
   }
+  // there's always only one screen
+  style_context_->add_provider_for_screen(
+      Gdk::Screen::get_default(), css_provider_, GTK_STYLE_PROVIDER_PRIORITY_USER);
 }
 
 void waybar::Client::bindInterfaces() {
@@ -249,7 +305,8 @@ int waybar::Client::main(int argc, char *argv[]) {
   if (!log_level.empty()) {
     spdlog::set_level(spdlog::level::from_str(log_level));
   }
-  gtk_app = Gtk::Application::create(argc, argv, "fr.arouillard.waybar");
+  gtk_app = Gtk::Application::create(
+      argc, argv, "fr.arouillard.waybar", Gio::APPLICATION_HANDLES_COMMAND_LINE);
   gdk_display = Gdk::Display::get_default();
   if (!gdk_display) {
     throw std::runtime_error("Can't find display");
@@ -265,10 +322,9 @@ int waybar::Client::main(int argc, char *argv[]) {
   gtk_app->hold();
   gtk_app->run();
   bars.clear();
-  zxdg_output_manager_v1_destroy(xdg_output_manager);
-  zwlr_layer_shell_v1_destroy(layer_shell);
-  zwp_idle_inhibit_manager_v1_destroy(idle_inhibit_manager);
-  wl_registry_destroy(registry);
-  wl_display_disconnect(wl_display);
   return 0;
 }
+
+void waybar::Client::reset() {
+  gtk_app->quit();
+}

src/factory.cpp

@@ -7,7 +7,7 @@ waybar::AModule* waybar::Factory::makeModule(const std::string& name) const {
     auto hash_pos = name.find('#');
     auto ref = name.substr(0, hash_pos);
     auto id = hash_pos != std::string::npos ? name.substr(hash_pos + 1) : "";
-#ifndef NO_FILESYSTEM
+#if defined(__linux__) && !defined(NO_FILESYSTEM)
     if (ref == "battery") {
       return new waybar::modules::Battery(id, config_[name]);
     }
@@ -22,23 +22,40 @@ waybar::AModule* waybar::Factory::makeModule(const std::string& name) const {
     if (ref == "sway/window") {
       return new waybar::modules::sway::Window(id, bar_, config_[name]);
     }
+    if (ref == "sway/language") {
+        return new waybar::modules::sway::Language(id, config_[name]);
+    }
+#endif
+#ifdef HAVE_WLR
+    if (ref == "wlr/taskbar") {
+      return new waybar::modules::wlr::Taskbar(id, bar_, config_[name]);
+    }
+#endif
+#ifdef HAVE_RIVER
+    if (ref == "river/tags") {
+      return new waybar::modules::river::Tags(id, bar_, config_[name]);
+    }
 #endif
     if (ref == "idle_inhibitor") {
       return new waybar::modules::IdleInhibitor(id, bar_, config_[name]);
     }
+#if defined(HAVE_MEMORY_LINUX) || defined(HAVE_MEMORY_BSD)
     if (ref == "memory") {
       return new waybar::modules::Memory(id, config_[name]);
     }
+#endif
+#if defined(HAVE_CPU_LINUX) || defined(HAVE_CPU_BSD)
     if (ref == "cpu") {
       return new waybar::modules::Cpu(id, config_[name]);
     }
+#endif
     if (ref == "clock") {
       return new waybar::modules::Clock(id, config_[name]);
     }
     if (ref == "disk") {
       return new waybar::modules::Disk(id, config_[name]);
     }
-#if defined(HAVE_DBUSMENU) && !defined(NO_FILESYSTEM)
+#ifdef HAVE_DBUSMENU
     if (ref == "tray") {
       return new waybar::modules::SNI::Tray(id, bar_, config_[name]);
     }
@@ -62,10 +79,22 @@ waybar::AModule* waybar::Factory::makeModule(const std::string& name) const {
     if (ref == "mpd") {
       return new waybar::modules::MPD(id, config_[name]);
     }
+#endif
+#ifdef HAVE_LIBSNDIO
+    if (ref == "sndio") {
+      return new waybar::modules::Sndio(id, config_[name]);
+    }
 #endif
     if (ref == "temperature") {
       return new waybar::modules::Temperature(id, config_[name]);
     }
+#if defined(__linux__)
+#  ifdef WANT_RFKILL
+    if (ref == "bluetooth") {
+      return new waybar::modules::Bluetooth(id, config_[name]);
+    }
+#  endif
+#endif
     if (ref.compare(0, 7, "custom/") == 0 && ref.size() > 7) {
       return new waybar::modules::Custom(ref.substr(7), id, config_[name]);
     }

src/main.cpp

@@ -1,16 +1,89 @@
 #include <csignal>
+#include <list>
+#include <mutex>
+#include <sys/types.h>
+#include <sys/wait.h>
 #include <spdlog/spdlog.h>
 #include "client.hpp"
 
+std::mutex reap_mtx;
+std::list<pid_t> reap;
+volatile bool reload;
+
+void* signalThread(void* args) {
+  int err, signum;
+  sigset_t mask;
+  sigemptyset(&mask);
+  sigaddset(&mask, SIGCHLD);
+
+  while (true) {
+    err = sigwait(&mask, &signum);
+    if (err != 0) {
+      spdlog::error("sigwait failed: {}", strerror(errno));
+      continue;
+    }
+
+    switch (signum) {
+      case SIGCHLD:
+        spdlog::debug("Received SIGCHLD in signalThread");
+        if (!reap.empty()) {
+          reap_mtx.lock();
+          for (auto it = reap.begin(); it != reap.end(); ++it) {
+            if (waitpid(*it, nullptr, WNOHANG) == *it) {
+              spdlog::debug("Reaped child with PID: {}", *it);
+              it = reap.erase(it);
+            }
+          }
+          reap_mtx.unlock();
+        }
+        break;
+      default:
+        spdlog::debug("Received signal with number {}, but not handling",
+                      signum);
+        break;
+    }
+  }
+}
+
+void startSignalThread(void) {
+  int err;
+  sigset_t mask;
+  sigemptyset(&mask);
+  sigaddset(&mask, SIGCHLD);
+
+  // Block SIGCHLD so it can be handled by the signal thread
+  // Any threads created by this one (the main thread) should not
+  // modify their signal mask to unblock SIGCHLD
+  err = pthread_sigmask(SIG_BLOCK, &mask, nullptr);
+  if (err != 0) {
+    spdlog::error("pthread_sigmask failed in startSignalThread: {}", strerror(err));
+    exit(1);
+  }
+
+  pthread_t thread_id;
+  err = pthread_create(&thread_id, nullptr, signalThread, nullptr);
+  if (err != 0) {
+    spdlog::error("pthread_create failed in startSignalThread: {}", strerror(err));
+    exit(1);
+  }
+}
+
 int main(int argc, char* argv[]) {
   try {
     auto client = waybar::Client::inst();
+
     std::signal(SIGUSR1, [](int /*signal*/) {
       for (auto& bar : waybar::Client::inst()->bars) {
         bar->toggle();
       }
     });
 
+    std::signal(SIGUSR2, [](int /*signal*/) {
+        spdlog::info("Reloading...");
+        reload = true;
+        waybar::Client::inst()->reset();
+    });
+
     for (int sig = SIGRTMIN + 1; sig <= SIGRTMAX; ++sig) {
       std::signal(sig, [](int sig) {
         for (auto& bar : waybar::Client::inst()->bars) {
@@ -18,8 +91,14 @@ int main(int argc, char* argv[]) {
         }
       });
     }
+    startSignalThread();
+
+    auto ret = 0;
+    do {
+      reload = false;
+      ret = client->main(argc, argv);
+    } while (reload);
 
-    auto ret = client->main(argc, argv);
     delete client;
     return ret;
   } catch (const std::exception& e) {

src/modules/backlight.cpp

@@ -1,16 +1,14 @@
 #include "modules/backlight.hpp"
 
+#include <fmt/format.h>
+#include <libudev.h>
+#include <sys/epoll.h>
+#include <unistd.h>
+
 #include <algorithm>
 #include <chrono>
 #include <memory>
 
-#include <libudev.h>
-
-#include <sys/epoll.h>
-#include <unistd.h>
-
-#include <fmt/format.h>
-
 namespace {
 class FileDescriptor {
  public:
@@ -187,6 +185,8 @@ auto waybar::modules::Backlight::update() -> void {
   }
   previous_best_ = best == nullptr ? std::nullopt : std::optional{*best};
   previous_format_ = format_;
+  // Call parent update
+  ALabel::update();
 }
 
 template <class ForwardIt>
@@ -211,7 +211,7 @@ void waybar::modules::Backlight::upsert_device(ForwardIt first, ForwardIt last,
   check_nn(name);
 
   const char *actual_brightness_attr =
-      strcmp(name, "amdgpu_bl0") == 0 ? "brightness" : "actual_brightness";
+      strncmp(name, "amdgpu_bl", 9) == 0 ? "brightness" : "actual_brightness";
 
   const char *actual = udev_device_get_sysattr_value(dev, actual_brightness_attr);
   check_nn(actual);

src/modules/battery.cpp

@@ -1,48 +1,85 @@
 #include "modules/battery.hpp"
+
 #include <spdlog/spdlog.h>
 
 waybar::modules::Battery::Battery(const std::string& id, const Json::Value& config)
     : ALabel(config, "battery", id, "{capacity}%", 60) {
-  getBatteries();
+  battery_watch_fd_ = inotify_init1(IN_CLOEXEC);
-  fd_ = inotify_init1(IN_CLOEXEC);
+  if (battery_watch_fd_ == -1) {
-  if (fd_ == -1) {
     throw std::runtime_error("Unable to listen batteries.");
   }
-  for (auto const& bat : batteries_) {
+
-    auto wd = inotify_add_watch(fd_, (bat / "uevent").c_str(), IN_ACCESS);
+  global_watch_fd_ = inotify_init1(IN_CLOEXEC);
-    if (wd != -1) {
+  if (global_watch_fd_ == -1) {
-      wds_.push_back(wd);
+    throw std::runtime_error("Unable to listen batteries.");
   }
+
+  // Watch the directory for any added or removed batteries
+  global_watch = inotify_add_watch(global_watch_fd_, data_dir_.c_str(), IN_CREATE | IN_DELETE);
+  if (global_watch < 0) {
+    throw std::runtime_error("Could not watch for battery plug/unplug");
   }
+
+  refreshBatteries();
   worker();
 }
 
 waybar::modules::Battery::~Battery() {
-  for (auto wd : wds_) {
+  std::lock_guard<std::mutex> guard(battery_list_mutex_);
-    inotify_rm_watch(fd_, wd);
+
+  if (global_watch >= 0) {
+    inotify_rm_watch(global_watch_fd_, global_watch);
   }
-  close(fd_);
+  close(global_watch_fd_);
+
+  for (auto it = batteries_.cbegin(); it != batteries_.cend(); it++) {
+    auto watch_id = (*it).second;
+    if (watch_id >= 0) {
+      inotify_rm_watch(battery_watch_fd_, watch_id);
+    }
+    batteries_.erase(it);
+  }
+  close(battery_watch_fd_);
 }
 
 void waybar::modules::Battery::worker() {
   thread_timer_ = [this] {
+    // Make sure we eventually update the list of batteries even if we miss an
+    // inotify event for some reason
+    refreshBatteries();
     dp.emit();
     thread_timer_.sleep_for(interval_);
   };
   thread_ = [this] {
     struct inotify_event event = {0};
-    int                  nbytes = read(fd_, &event, sizeof(event));
+    int                  nbytes = read(battery_watch_fd_, &event, sizeof(event));
     if (nbytes != sizeof(event) || event.mask & IN_IGNORED) {
       thread_.stop();
       return;
     }
-    // TODO: don't stop timer for now since there is some bugs :?
+    dp.emit();
-    // thread_timer_.stop();
+  };
+  thread_battery_update_ = [this] {
+    struct inotify_event event = {0};
+    int                  nbytes = read(global_watch_fd_, &event, sizeof(event));
+    if (nbytes != sizeof(event) || event.mask & IN_IGNORED) {
+      thread_.stop();
+      return;
+    }
+    refreshBatteries();
     dp.emit();
   };
 }
 
-void waybar::modules::Battery::getBatteries() {
+void waybar::modules::Battery::refreshBatteries() {
+  std::lock_guard<std::mutex> guard(battery_list_mutex_);
+
+  // Mark existing list of batteries as not necessarily found
+  std::map<fs::path, bool> check_map;
+  for (auto const& bat : batteries_) {
+    check_map[bat.first] = false;
+  }
+
   try {
     for (auto& node : fs::directory_iterator(data_dir_)) {
       if (!fs::is_directory(node)) {
@@ -52,8 +89,23 @@ void waybar::modules::Battery::getBatteries() {
       auto bat_defined = config_["bat"].isString();
       if (((bat_defined && dir_name == config_["bat"].asString()) || !bat_defined) &&
           fs::exists(node.path() / "capacity") && fs::exists(node.path() / "uevent") &&
-          fs::exists(node.path() / "status")) {
+          fs::exists(node.path() / "status") && fs::exists(node.path() / "type")) {
-        batteries_.push_back(node.path());
+        std::string type;
+        std::ifstream(node.path() / "type") >> type;
+
+        if (!type.compare("Battery")){
+          check_map[node.path()] = true;
+          auto search = batteries_.find(node.path());
+          if (search == batteries_.end()) {
+            // We've found a new battery save it and start listening for events
+            auto event_path = (node.path() / "uevent");
+            auto wd = inotify_add_watch(battery_watch_fd_, event_path.c_str(), IN_ACCESS);
+            if (wd < 0) {
+              throw std::runtime_error("Could not watch events for " + node.path().string());
+            }
+            batteries_[node.path()] = wd;
+          }
+        }
       }
       auto adap_defined = config_["adapter"].isString();
       if (((adap_defined && dir_name == config_["adapter"].asString()) || !adap_defined) &&
@@ -70,22 +122,45 @@ void waybar::modules::Battery::getBatteries() {
     }
     throw std::runtime_error("No batteries.");
   }
+
+  // Remove any batteries that are no longer present and unwatch them
+  for (auto const& check : check_map) {
+    if (!check.second) {
+      auto watch_id = batteries_[check.first];
+      if (watch_id >= 0) {
+        inotify_rm_watch(battery_watch_fd_, watch_id);
+      }
+      batteries_.erase(check.first);
+    }
+  }
 }
 
-const std::tuple<uint8_t, float, std::string> waybar::modules::Battery::getInfos() const {
+// Unknown > Full > Not charging > Discharging > Charging
+static bool status_gt(const std::string& a, const std::string& b) {
+  if (a == b) return false;
+  else if (a == "Unknown") return true;
+  else if (a == "Full" && b != "Unknown") return true;
+  else if (a == "Not charging" && b != "Unknown" && b != "Full") return true;
+  else if (a == "Discharging" && b != "Unknown" && b != "Full" && b != "Not charging") return true;
+  return false;
+}
+
+const std::tuple<uint8_t, float, std::string, float> waybar::modules::Battery::getInfos() {
+  std::lock_guard<std::mutex> guard(battery_list_mutex_);
+
   try {
-    uint16_t    total = 0;
     uint32_t    total_power = 0;   // μW
     uint32_t    total_energy = 0;  // μWh
     uint32_t    total_energy_full = 0;
+    uint32_t    total_energy_full_design = 0;
     std::string status = "Unknown";
-    for (auto const& bat : batteries_) {
+    for (auto const& item : batteries_) {
-      uint16_t    capacity;
+      auto bat = item.first;
       uint32_t    power_now;
       uint32_t    energy_full;
       uint32_t    energy_now;
+      uint32_t    energy_full_design;
       std::string _status;
-      std::ifstream(bat / "capacity") >> capacity;
       std::ifstream(bat / "status") >> _status;
       auto rate_path = fs::exists(bat / "current_now") ? "current_now" : "power_now";
       std::ifstream(bat / rate_path) >> power_now;
@@ -93,13 +168,17 @@ const std::tuple<uint8_t, float, std::string> waybar::modules::Battery::getInfos
       std::ifstream(bat / now_path) >> energy_now;
       auto full_path = fs::exists(bat / "charge_full") ? "charge_full" : "energy_full";
       std::ifstream(bat / full_path) >> energy_full;
-      if (_status != "Unknown") {
+      auto full_design_path = fs::exists(bat / "charge_full_design") ? "charge_full_design" : "energy_full_design";
+      std::ifstream(bat / full_design_path) >> energy_full_design;
+
+      // Show the "smallest" status among all batteries
+      if (status_gt(status, _status)) {
         status = _status;
       }
-      total += capacity;
       total_power += power_now;
       total_energy += energy_now;
       total_energy_full += energy_full;
+      total_energy_full_design += energy_full_design;
     }
     if (!adapter_.empty() && status == "Discharging") {
       bool online;
@@ -113,12 +192,40 @@ const std::tuple<uint8_t, float, std::string> waybar::modules::Battery::getInfos
       time_remaining = (float)total_energy / total_power;
     } else if (status == "Charging" && total_power != 0) {
       time_remaining = -(float)(total_energy_full - total_energy) / total_power;
+      if (time_remaining > 0.0f) {
+        // If we've turned positive it means the battery is past 100% and so
+        // just report that as no time remaining
+        time_remaining = 0.0f;
       }
-    uint16_t capacity = total / batteries_.size();
+    }
-    return {capacity, time_remaining, status};
+    float capacity = ((float)total_energy * 100.0f / (float) total_energy_full);
+    // Handle design-capacity
+    if (config_["design-capacity"].isBool() ? config_["design-capacity"].asBool() : false) {
+        capacity = ((float)total_energy * 100.0f / (float) total_energy_full_design);
+    }
+    // Handle full-at
+    if (config_["full-at"].isUInt()) {
+      auto full_at = config_["full-at"].asUInt();
+      if (full_at < 100) {
+        capacity = 100.f * capacity / full_at;
+      }
+    }
+    if (capacity > 100.f) {
+      // This can happen when the battery is calibrating and goes above 100%
+      // Handle it gracefully by clamping at 100%
+      capacity = 100.f;
+    }
+    uint8_t cap = round(capacity);
+    if (cap == 100) {
+      // If we've reached 100% just mark as full as some batteries can stay
+      // stuck reporting they're still charging but not yet done
+      status = "Full";
+    }
+
+    return {cap, time_remaining, status, total_power / 1e6};
   } catch (const std::exception& e) {
     spdlog::error("Battery: {}", e.what());
-    return {0, 0, "Unknown"};
+    return {0, 0, "Unknown", 0};
   }
 }
 
@@ -142,6 +249,10 @@ const std::string waybar::modules::Battery::formatTimeRemaining(float hoursRemai
   uint16_t full_hours = static_cast<uint16_t>(hoursRemaining);
   uint16_t minutes = static_cast<uint16_t>(60 * (hoursRemaining - full_hours));
   auto     format = std::string("{H} h {M} min");
+  if (full_hours == 0 && minutes == 0) {
+    // Migh as well not show "0h 0min"
+    return "";
+  }
   if (config_["format-time"].isString()) {
     format = config_["format-time"].asString();
   }
@@ -149,28 +260,41 @@ const std::string waybar::modules::Battery::formatTimeRemaining(float hoursRemai
 }
 
 auto waybar::modules::Battery::update() -> void {
-  auto [capacity, time_remaining, status] = getInfos();
+  auto [capacity, time_remaining, status, power] = getInfos();
   if (status == "Unknown") {
     status = getAdapterStatus(capacity);
   }
-  if (tooltipEnabled()) {
+  auto status_pretty = status;
-    std::string tooltip_text;
+  // Transform to lowercase  and replace space with dash
-    if (time_remaining != 0) {
-      std::string time_to = std::string("Time to ") + ((time_remaining > 0) ? "empty" : "full");
-      tooltip_text = time_to + ": " + formatTimeRemaining(time_remaining);
-    } else {
-      tooltip_text = status;
-    }
-    label_.set_tooltip_text(tooltip_text);
-  }
-  // Transform to lowercase
-  std::transform(status.begin(), status.end(), status.begin(), ::tolower);
-  // Replace space with dash
   std::transform(status.begin(), status.end(), status.begin(), [](char ch) {
-    return ch == ' ' ? '-' : ch;
+    return ch == ' ' ? '-' : std::tolower(ch);
   });
   auto format = format_;
   auto state = getState(capacity, true);
+  auto time_remaining_formatted = formatTimeRemaining(time_remaining);
+  if (tooltipEnabled()) {
+    std::string tooltip_text_default;
+    std::string tooltip_format = "{timeTo}";
+    if (time_remaining != 0) {
+      std::string time_to = std::string("Time to ") + ((time_remaining > 0) ? "empty" : "full");
+      tooltip_text_default = time_to + ": " + time_remaining_formatted;
+    } else {
+      tooltip_text_default = status_pretty;
+    }
+    if (!state.empty() && config_["tooltip-format-" + status + "-" + state].isString()) {
+      tooltip_format = config_["tooltip-format-" + status + "-" + state].asString();
+    } else if (config_["tooltip-format-" + status].isString()) {
+      tooltip_format = config_["tooltip-format-" + status].asString();
+    } else if (!state.empty() && config_["tooltip-format-" + state].isString()) {
+      tooltip_format = config_["tooltip-format-" + state].asString();
+    } else if (config_["tooltip-format"].isString()) {
+      tooltip_format = config_["tooltip-format"].asString();
+    }
+    label_.set_tooltip_text(fmt::format(tooltip_format,
+                                        fmt::arg("timeTo", tooltip_text_default),
+                                        fmt::arg("capacity", capacity),
+                                        fmt::arg("time", time_remaining_formatted)));
+  }
   if (!old_status_.empty()) {
     label_.get_style_context()->remove_class(old_status_);
   }
@@ -187,9 +311,13 @@ auto waybar::modules::Battery::update() -> void {
     event_box_.hide();
   } else {
     event_box_.show();
+    auto icons = std::vector<std::string>{status + "-" + state, status, state};
     label_.set_markup(fmt::format(format,
                                   fmt::arg("capacity", capacity),
-                                  fmt::arg("icon", getIcon(capacity, state)),
+                                  fmt::arg("power", power),
-                                  fmt::arg("time", formatTimeRemaining(time_remaining))));
+                                  fmt::arg("icon", getIcon(capacity, icons)),
+                                  fmt::arg("time", time_remaining_formatted)));
   }
+  // Call parent update
+  ALabel::update();
 }

src/modules/bluetooth.cpp

@@ -0,0 +1,25 @@
+#include "modules/bluetooth.hpp"
+
+#include <fmt/format.h>
+
+waybar::modules::Bluetooth::Bluetooth(const std::string& id, const Json::Value& config)
+    : ALabel(config, "bluetooth", id, "{icon}", 10), rfkill_{RFKILL_TYPE_BLUETOOTH} {
+  rfkill_.on_update.connect(sigc::hide(sigc::mem_fun(*this, &Bluetooth::update)));
+}
+
+auto waybar::modules::Bluetooth::update() -> void {
+  std::string status = rfkill_.getState() ? "disabled" : "enabled";
+
+  label_.set_markup(
+      fmt::format(format_, fmt::arg("status", status), fmt::arg("icon", getIcon(0, status))));
+
+  if (tooltipEnabled()) {
+    if (config_["tooltip-format"].isString()) {
+      auto tooltip_format = config_["tooltip-format"].asString();
+      auto tooltip_text = fmt::format(tooltip_format, status);
+      label_.set_tooltip_text(tooltip_text);
+    } else {
+      label_.set_tooltip_text(status);
+    }
+  }
+}

src/modules/clock.cpp

@@ -1,6 +1,11 @@
 #include "modules/clock.hpp"
+
+#include <time.h>
+#include <spdlog/spdlog.h>
+
 #include <sstream>
 #include <type_traits>
+#include "util/ustring_clen.hpp"
 #ifdef HAVE_LANGINFO_1STDAY
 #include <langinfo.h>
 #include <locale.h>
@@ -9,10 +14,9 @@
 using waybar::modules::waybar_time;
 
 waybar::modules::Clock::Clock(const std::string& id, const Json::Value& config)
-    : ALabel(config, "clock", id, "{:%H:%M}", 60)
+    : ALabel(config, "clock", id, "{:%H:%M}", 60, false, false, true), fixed_time_zone_(false) {
-    , fixed_time_zone_(false)
-{
   if (config_["timezone"].isString()) {
+    spdlog::warn("As using a timezone, some format args may be missing as the date library havn't got a release since 2018.");
     time_zone_ = date::locate_zone(config_["timezone"].asString());
     fixed_time_zone_ = true;
   }
@@ -37,12 +41,22 @@ auto waybar::modules::Clock::update() -> void {
     // Time zone can change. Be sure to pick that.
     time_zone_ = date::current_zone();
   }
+
   auto        now = std::chrono::system_clock::now();
   waybar_time wtime = {locale_,
                        date::make_zoned(time_zone_, date::floor<std::chrono::seconds>(now))};
 
-  auto text = fmt::format(format_, wtime);
+  std::string text;
+  if (!fixed_time_zone_) {
+    // As date dep is not fully compatible, prefer fmt
+    tzset();
+    auto localtime = fmt::localtime(std::chrono::system_clock::to_time_t(now));
+    text = fmt::format(format_, localtime);
     label_.set_markup(text);
+  } else {
+    text = fmt::format(format_, wtime);
+    label_.set_markup(text);
+  }
 
   if (tooltipEnabled()) {
     if (config_["tooltip-format"].isString()) {
@@ -54,6 +68,40 @@ auto waybar::modules::Clock::update() -> void {
       label_.set_tooltip_markup(text);
     }
   }
+  // Call parent update
+  ALabel::update();
+}
+
+bool waybar::modules::Clock::handleScroll(GdkEventScroll *e) {
+  // defer to user commands if set
+  if (config_["on-scroll-up"].isString() || config_["on-scroll-down"].isString()) {
+    return AModule::handleScroll(e);
+  }
+
+  auto dir = AModule::getScrollDir(e);
+  if (dir != SCROLL_DIR::UP && dir != SCROLL_DIR::DOWN) {
+    return true;
+  }
+  if (!config_["timezones"].isArray() || config_["timezones"].empty()) {
+    return true;
+  }
+  auto nr_zones = config_["timezones"].size();
+  if (dir == SCROLL_DIR::UP) {
+    size_t new_idx = time_zone_idx_ + 1;
+    time_zone_idx_ = new_idx == nr_zones ? 0 : new_idx;
+  } else {
+    time_zone_idx_ = time_zone_idx_ == 0 ? nr_zones - 1 : time_zone_idx_ - 1;
+  }
+  auto zone_name = config_["timezones"][time_zone_idx_];
+  if (!zone_name.isString() || zone_name.empty()) {
+    fixed_time_zone_ = false;
+  } else {
+    time_zone_ = date::locate_zone(zone_name.asString());
+    fixed_time_zone_ = true;
+  }
+
+  update();
+  return true;
 }
 
 auto waybar::modules::Clock::calendar_text(const waybar_time& wtime) -> std::string {
@@ -71,12 +119,12 @@ auto waybar::modules::Clock::calendar_text(const waybar_time& wtime) -> std::str
   weekdays_header(first_dow, os);
 
   // First week prefixed with spaces if needed.
-  auto wd = date::weekday(ym/1);
+  auto wd = date::weekday(ym / 1);
   auto empty_days = (wd - first_dow).count();
   if (empty_days > 0) {
     os << std::string(empty_days * 3 - 1, ' ');
   }
-  auto last_day = (ym/date::literals::last).day();
+  auto last_day = (ym / date::literals::last).day();
   for (auto d = date::day(1); d <= last_day; ++d, ++wd) {
     if (wd != first_dow) {
       os << ' ';
@@ -84,7 +132,12 @@ auto waybar::modules::Clock::calendar_text(const waybar_time& wtime) -> std::str
       os << '\n';
     }
     if (d == curr_day) {
+      if (config_["today-format"].isString()) {
+        auto today_format = config_["today-format"].asString();
+        os << fmt::format(today_format, date::format("%e", d));
+      } else {
         os << "<b><u>" << date::format("%e", d) << "</u></b>";
+      }
     } else {
       os << date::format("%e", d);
     }
@@ -96,17 +149,20 @@ auto waybar::modules::Clock::calendar_text(const waybar_time& wtime) -> std::str
   return result;
 }
 
-auto waybar::modules::Clock::weekdays_header(const date::weekday& first_dow, std::ostream& os) -> void {
+auto waybar::modules::Clock::weekdays_header(const date::weekday& first_dow, std::ostream& os)
+    -> void {
   auto wd = first_dow;
   do {
     if (wd != first_dow) os << ' ';
     Glib::ustring wd_ustring(date::format(locale_, "%a", wd));
+    auto clen = ustring_clen(wd_ustring);
     auto wd_len = wd_ustring.length();
-    if (wd_len > 2) {
+    while (clen > 2) {
-      wd_ustring = wd_ustring.substr(0, 2);
+      wd_ustring = wd_ustring.substr(0, wd_len-1);
-      wd_len = 2;
+      wd_len--;
+      clen = ustring_clen(wd_ustring);
     }
-    const std::string pad(2 - wd_len, ' ');
+    const std::string pad(2 - clen, ' ');
     os << pad << wd_ustring;
   } while (++wd != first_dow);
   os << "\n";
@@ -123,11 +179,11 @@ using deleting_unique_ptr = std::unique_ptr<T, deleter_from_fn<fn>>;
 // Computations done similarly to Linux cal utility.
 auto waybar::modules::Clock::first_day_of_week() -> date::weekday {
 #ifdef HAVE_LANGINFO_1STDAY
-  deleting_unique_ptr<std::remove_pointer<locale_t>::type, freelocale>
+  deleting_unique_ptr<std::remove_pointer<locale_t>::type, freelocale> posix_locale{
-    posix_locale{newlocale(LC_ALL, locale_.name().c_str(), nullptr)};
+      newlocale(LC_ALL, locale_.name().c_str(), nullptr)};
   if (posix_locale) {
-    const int i = (std::intptr_t) nl_langinfo_l(_NL_TIME_WEEK_1STDAY, posix_locale.get());
+    const int i = (std::intptr_t)nl_langinfo_l(_NL_TIME_WEEK_1STDAY, posix_locale.get());
-    auto ymd = date::year(i / 10000)/(i / 100 % 100)/(i % 100);
+    auto      ymd = date::year(i / 10000) / (i / 100 % 100) / (i % 100);
     auto      wd = date::weekday(ymd);
     uint8_t   j = *nl_langinfo_l(_NL_TIME_FIRST_WEEKDAY, posix_locale.get());
     return wd + date::days(j - 1);

src/modules/cpu.cpp

@@ -1,83 +0,0 @@
-#include "modules/cpu.hpp"
-#include <numeric>
-
-waybar::modules::Cpu::Cpu(const std::string& id, const Json::Value& config)
-    : ALabel(config, "cpu", id, "{usage}%", 10) {
-  thread_ = [this] {
-    dp.emit();
-    thread_.sleep_for(interval_);
-  };
-}
-
-auto waybar::modules::Cpu::update() -> void {
-  // TODO: as creating dynamic fmt::arg arrays is buggy we have to calc both
-  auto cpu_load = getCpuLoad();
-  auto [cpu_usage, tooltip] = getCpuUsage();
-  if (tooltipEnabled()) {
-    label_.set_tooltip_text(tooltip);
-  }
-  label_.set_markup(fmt::format(format_, fmt::arg("load", cpu_load), fmt::arg("usage", cpu_usage)));
-  getState(cpu_usage);
-}
-
-uint16_t waybar::modules::Cpu::getCpuLoad() {
-  struct sysinfo info = {0};
-  if (sysinfo(&info) == 0) {
-    float    f_load = 1.F / (1U << SI_LOAD_SHIFT);
-    uint16_t load = info.loads[0] * f_load * 100 / get_nprocs();
-    return load;
-  }
-  throw std::runtime_error("Can't get Cpu load");
-}
-
-std::tuple<uint16_t, std::string> waybar::modules::Cpu::getCpuUsage() {
-  if (prev_times_.empty()) {
-    prev_times_ = parseCpuinfo();
-    std::this_thread::sleep_for(std::chrono::milliseconds(100));
-  }
-  std::vector<std::tuple<size_t, size_t>> curr_times = parseCpuinfo();
-  std::string                             tooltip;
-  uint16_t                                usage = 0;
-  for (size_t i = 0; i < curr_times.size(); ++i) {
-    auto [curr_idle, curr_total] = curr_times[i];
-    auto [prev_idle, prev_total] = prev_times_[i];
-    const float delta_idle = curr_idle - prev_idle;
-    const float delta_total = curr_total - prev_total;
-    uint16_t    tmp = 100 * (1 - delta_idle / delta_total);
-    if (i == 0) {
-      usage = tmp;
-      tooltip = fmt::format("Total: {}%", tmp);
-    } else {
-      tooltip = tooltip + fmt::format("\nCore{}: {}%", i - 1, tmp);
-    }
-  }
-  prev_times_ = curr_times;
-  return {usage, tooltip};
-}
-
-std::vector<std::tuple<size_t, size_t>> waybar::modules::Cpu::parseCpuinfo() {
-  std::ifstream info(data_dir_);
-  if (!info.is_open()) {
-    throw std::runtime_error("Can't open " + data_dir_);
-  }
-  std::vector<std::tuple<size_t, size_t>> cpuinfo;
-  std::string                             line;
-  while (getline(info, line)) {
-    if (line.substr(0, 3).compare("cpu") != 0) {
-      break;
-    }
-    std::stringstream   sline(line.substr(5));
-    std::vector<size_t> times;
-    for (size_t time = 0; sline >> time; times.push_back(time))
-      ;
-
-    size_t idle_time = 0;
-    size_t total_time = 0;
-    if (times.size() >= 4) {
-      idle_time = times[3];
-      total_time = std::accumulate(times.begin(), times.end(), 0);
-    }
-    cpuinfo.emplace_back(idle_time, total_time);
-  }
-  return cpuinfo;
-}

src/modules/cpu/bsd.cpp

@@ -0,0 +1,108 @@
+#include "modules/cpu.hpp"
+
+#include <sys/types.h>
+#include <sys/sysctl.h>
+#include <spdlog/spdlog.h>
+#include <cstdlib>            // malloc
+#include <unistd.h>           // sysconf
+#include <cmath>              // NAN
+
+#if defined(__NetBSD__) || defined(__OpenBSD__)
+#  include <sys/sched.h>
+#else
+#  include <sys/resource.h>
+#endif
+
+#if defined(__NetBSD__)
+typedef uint64_t cp_time_t;
+#else
+typedef long cp_time_t;
+#endif
+#if defined(__NetBSD__) || defined(__OpenBSD__)
+typedef uint64_t pcp_time_t;
+#else
+typedef long pcp_time_t;
+#endif
+
+std::vector<std::tuple<size_t, size_t>> waybar::modules::Cpu::parseCpuinfo() {
+  cp_time_t sum_cp_time[CPUSTATES];
+  size_t sum_sz = sizeof(sum_cp_time);
+  int ncpu = sysconf(_SC_NPROCESSORS_CONF);
+  size_t sz = CPUSTATES * (ncpu + 1) * sizeof(pcp_time_t);
+  pcp_time_t *cp_time = static_cast<pcp_time_t *>(malloc(sz)), *pcp_time = cp_time;
+#if defined(__NetBSD__)
+  int mib[] = {
+    CTL_KERN,
+    KERN_CP_TIME,
+  };
+  if (sysctl(mib, sizeof(mib)/sizeof(mib[0]), sum_cp_time, &sum_sz, NULL, 0)) {
+    throw std::runtime_error("sysctl kern.cp_time failed");
+  }
+  for (int state = 0; state < CPUSTATES; state++) {
+    cp_time[state] = sum_cp_time[state];
+  }
+  pcp_time += CPUSTATES;
+  if (sysctl(mib, sizeof(mib)/sizeof(mib[0]), pcp_time, &sz, NULL, 0)) {
+    throw std::runtime_error("sysctl kern.cp_time failed");
+  }
+#elif defined(__OpenBSD__)
+  {
+    int mib[] = {
+      CTL_KERN,
+      KERN_CPTIME,
+    };
+    if (sysctl(mib, sizeof(mib)/sizeof(mib[0]), sum_cp_time, &sum_sz, NULL, 0)) {
+      throw std::runtime_error("sysctl kern.cp_time failed");
+    }
+  }
+  for (int state = 0; state < CPUSTATES; state++) {
+    cp_time[state] = sum_cp_time[state];
+  }
+  pcp_time = cp_time;
+  sz /= ncpu + 1;
+  {
+    int mib[] = {
+      CTL_KERN,
+      KERN_CPTIME2,
+      0,
+    };
+    for (int cpu = 0; cpu < ncpu; cpu++) {
+      mib[2] = cpu;
+      pcp_time += CPUSTATES;
+      if (sysctl(mib, sizeof(mib)/sizeof(mib[0]), pcp_time, &sz, NULL, 0)) {
+        throw std::runtime_error("sysctl kern.cp_time2 failed");
+      }
+    }
+  }
+#else
+  if (sysctlbyname("kern.cp_time", sum_cp_time, &sum_sz, NULL, 0)) {
+    throw std::runtime_error("sysctl kern.cp_time failed");
+  }
+  for (int state = 0; state < CPUSTATES; state++) {
+    cp_time[state] = sum_cp_time[state];
+  }
+  pcp_time += CPUSTATES;
+  if (sysctlbyname("kern.cp_times", pcp_time, &sz, NULL, 0)) {
+    throw std::runtime_error("sysctl kern.cp_times failed");
+  }
+#endif
+  std::vector<std::tuple<size_t, size_t>> cpuinfo;
+  for (int cpu = 0; cpu < ncpu + 1; cpu++) {
+    pcp_time_t total = 0, *single_cp_time = &cp_time[cpu * CPUSTATES];
+    for (int state = 0; state < CPUSTATES; state++) {
+      total += single_cp_time[state];
+    }
+    cpuinfo.emplace_back(single_cp_time[CP_IDLE], total);
+  }
+  free(cp_time);
+  return cpuinfo;
+}
+
+std::vector<float> waybar::modules::Cpu::parseCpuFrequencies() {
+  static std::vector<float> frequencies;
+  if (frequencies.empty()) {
+    spdlog::warn("cpu/bsd: parseCpuFrequencies is not implemented, expect garbage in {*_frequency}");
+    frequencies.push_back(NAN);
+  }
+  return frequencies;
+}

src/modules/cpu/common.cpp

@@ -0,0 +1,85 @@
+#include "modules/cpu.hpp"
+
+waybar::modules::Cpu::Cpu(const std::string& id, const Json::Value& config)
+    : ALabel(config, "cpu", id, "{usage}%", 10) {
+  thread_ = [this] {
+    dp.emit();
+    thread_.sleep_for(interval_);
+  };
+}
+
+auto waybar::modules::Cpu::update() -> void {
+  // TODO: as creating dynamic fmt::arg arrays is buggy we have to calc both
+  auto cpu_load = getCpuLoad();
+  auto [cpu_usage, tooltip] = getCpuUsage();
+  auto [max_frequency, min_frequency, avg_frequency] = getCpuFrequency();
+  if (tooltipEnabled()) {
+    label_.set_tooltip_text(tooltip);
+  }
+  auto format = format_;
+  auto state = getState(cpu_usage);
+  if (!state.empty() && config_["format-" + state].isString()) {
+    format = config_["format-" + state].asString();
+  }
+
+  if (format.empty()) {
+    event_box_.hide();
+  } else {
+    event_box_.show();
+    label_.set_markup(fmt::format(format,
+                                  fmt::arg("load", cpu_load),
+                                  fmt::arg("usage", cpu_usage),
+                                  fmt::arg("max_frequency", max_frequency),
+                                  fmt::arg("min_frequency", min_frequency),
+                                  fmt::arg("avg_frequency", avg_frequency)));
+  }
+
+  // Call parent update
+  ALabel::update();
+}
+
+double waybar::modules::Cpu::getCpuLoad() {
+  double load[1];
+  if (getloadavg(load, 1) != -1) {
+    return load[0];
+  }
+  throw std::runtime_error("Can't get Cpu load");
+}
+
+std::tuple<uint16_t, std::string> waybar::modules::Cpu::getCpuUsage() {
+  if (prev_times_.empty()) {
+    prev_times_ = parseCpuinfo();
+    std::this_thread::sleep_for(std::chrono::milliseconds(100));
+  }
+  std::vector<std::tuple<size_t, size_t>> curr_times = parseCpuinfo();
+  std::string                             tooltip;
+  uint16_t                                usage = 0;
+  for (size_t i = 0; i < curr_times.size(); ++i) {
+    auto [curr_idle, curr_total] = curr_times[i];
+    auto [prev_idle, prev_total] = prev_times_[i];
+    const float delta_idle = curr_idle - prev_idle;
+    const float delta_total = curr_total - prev_total;
+    uint16_t    tmp = 100 * (1 - delta_idle / delta_total);
+    if (i == 0) {
+      usage = tmp;
+      tooltip = fmt::format("Total: {}%", tmp);
+    } else {
+      tooltip = tooltip + fmt::format("\nCore{}: {}%", i - 1, tmp);
+    }
+  }
+  prev_times_ = curr_times;
+  return {usage, tooltip};
+}
+
+std::tuple<float, float, float> waybar::modules::Cpu::getCpuFrequency() {
+  std::vector<float> frequencies = parseCpuFrequencies();
+  auto [min, max] = std::minmax_element(std::begin(frequencies), std::end(frequencies));
+  float avg_frequency = std::accumulate(std::begin(frequencies), std::end(frequencies), 0.0) / frequencies.size();
+
+  // Round frequencies with double decimal precision to get GHz
+  float max_frequency = std::ceil(*max / 10.0) / 100.0;
+  float min_frequency = std::ceil(*min / 10.0) / 100.0;
+  avg_frequency = std::ceil(avg_frequency / 10.0) / 100.0;
+
+  return { max_frequency, min_frequency, avg_frequency };
+}

src/modules/cpu/linux.cpp

@@ -0,0 +1,50 @@
+#include "modules/cpu.hpp"
+
+std::vector<std::tuple<size_t, size_t>> waybar::modules::Cpu::parseCpuinfo() {
+  const std::string data_dir_ = "/proc/stat";
+  std::ifstream info(data_dir_);
+  if (!info.is_open()) {
+    throw std::runtime_error("Can't open " + data_dir_);
+  }
+  std::vector<std::tuple<size_t, size_t>> cpuinfo;
+  std::string                             line;
+  while (getline(info, line)) {
+    if (line.substr(0, 3).compare("cpu") != 0) {
+      break;
+    }
+    std::stringstream   sline(line.substr(5));
+    std::vector<size_t> times;
+    for (size_t time = 0; sline >> time; times.push_back(time))
+      ;
+
+    size_t idle_time = 0;
+    size_t total_time = 0;
+    if (times.size() >= 4) {
+      idle_time = times[3];
+      total_time = std::accumulate(times.begin(), times.end(), 0);
+    }
+    cpuinfo.emplace_back(idle_time, total_time);
+  }
+  return cpuinfo;
+}
+
+std::vector<float> waybar::modules::Cpu::parseCpuFrequencies() {
+  const std::string file_path_ = "/proc/cpuinfo";
+  std::ifstream info(file_path_);
+  if (!info.is_open()) {
+    throw std::runtime_error("Can't open " + file_path_);
+  }
+  std::vector<float> frequencies;
+  std::string line;
+  while (getline(info, line)) {
+    if (line.substr(0, 7).compare("cpu MHz") != 0) {
+      continue;
+    }
+
+    std::string frequency_str = line.substr(line.find(":") + 2);
+    float frequency = std::strtol(frequency_str.c_str(), nullptr, 10);
+    frequencies.push_back(frequency);
+  }
+  info.close();
+  return frequencies;
+}

src/modules/custom.cpp

@@ -1,22 +1,21 @@
 #include "modules/custom.hpp"
+
 #include <spdlog/spdlog.h>
 
 waybar::modules::Custom::Custom(const std::string& name, const std::string& id,
                                 const Json::Value& config)
     : ALabel(config, "custom-" + name, id, "{}"), name_(name), fp_(nullptr), pid_(-1) {
-  if (config_["exec"].isString()) {
+  dp.emit();
   if (interval_.count() > 0) {
     delayWorker();
-    } else {
+  } else if (config_["exec"].isString()) {
     continuousWorker();
   }
-  }
-  dp.emit();
 }
 
 waybar::modules::Custom::~Custom() {
   if (pid_ != -1) {
-    kill(-pid_, 9);
+    killpg(pid_, SIGTERM);
     pid_ = -1;
   }
 }
@@ -25,14 +24,16 @@ void waybar::modules::Custom::delayWorker() {
   thread_ = [this] {
     bool can_update = true;
     if (config_["exec-if"].isString()) {
-      auto res = util::command::exec(config_["exec-if"].asString());
+      output_ = util::command::execNoRead(config_["exec-if"].asString());
-      if (res.exit_code != 0) {
+      if (output_.exit_code != 0) {
         can_update = false;
-        event_box_.hide();
+        dp.emit();
       }
     }
     if (can_update) {
+      if (config_["exec"].isString()) {
         output_ = util::command::exec(config_["exec"].asString());
+      }
       dp.emit();
     }
     thread_.sleep_for(interval_);
@@ -46,7 +47,7 @@ void waybar::modules::Custom::continuousWorker() {
   if (!fp_) {
     throw std::runtime_error("Unable to open " + cmd);
   }
-  thread_ = [&] {
+  thread_ = [this, cmd] {
     char*  buff = nullptr;
     size_t len = 0;
     if (getline(&buff, &len, fp_) == -1) {
@@ -55,14 +56,23 @@ void waybar::modules::Custom::continuousWorker() {
         exit_code = WEXITSTATUS(util::command::close(fp_, pid_));
         fp_ = nullptr;
       }
-      thread_.stop();
       if (exit_code != 0) {
         output_ = {exit_code, ""};
         dp.emit();
         spdlog::error("{} stopped unexpectedly, is it endless?", name_);
       }
+      if (config_["restart-interval"].isUInt()) {
+        pid_ = -1;
+        thread_.sleep_for(std::chrono::seconds(config_["restart-interval"].asUInt()));
+        fp_ = util::command::open(cmd, pid_);
+        if (!fp_) {
+          throw std::runtime_error("Unable to open " + cmd);
+        }
+      } else {
+        thread_.stop();
         return;
       }
+    } else {
       std::string output = buff;
 
       // Remove last newline
@@ -71,6 +81,7 @@ void waybar::modules::Custom::continuousWorker() {
       }
       output_ = {0, output};
       dp.emit();
+    }
   };
 }
 
@@ -80,21 +91,28 @@ void waybar::modules::Custom::refresh(int sig) {
   }
 }
 
+void waybar::modules::Custom::handleEvent() {
+  if (!config_["exec-on-event"].isBool() || config_["exec-on-event"].asBool()) {
+    thread_.wake_up();
+  }
+}
+
 bool waybar::modules::Custom::handleScroll(GdkEventScroll* e) {
   auto ret = ALabel::handleScroll(e);
-  thread_.wake_up();
+  handleEvent();
   return ret;
 }
 
 bool waybar::modules::Custom::handleToggle(GdkEventButton* const& e) {
   auto ret = ALabel::handleToggle(e);
-  thread_.wake_up();
+  handleEvent();
   return ret;
 }
 
 auto waybar::modules::Custom::update() -> void {
   // Hide label if output is empty
-  if (config_["exec"].isString() && (output_.out.empty() || output_.exit_code != 0)) {
+  if ((config_["exec"].isString() || config_["exec-if"].isString()) &&
+      (output_.out.empty() || output_.exit_code != 0)) {
     event_box_.hide();
   } else {
     if (config_["return-type"].asString() == "json") {
@@ -113,9 +131,13 @@ auto waybar::modules::Custom::update() -> void {
       label_.set_markup(str);
       if (tooltipEnabled()) {
         if (text_ == tooltip_) {
-          label_.set_tooltip_text(str);
+          if (label_.get_tooltip_markup() != str) {
+            label_.set_tooltip_markup(str);
+          }
         } else {
-          label_.set_tooltip_text(tooltip_);
+          if (label_.get_tooltip_markup() != tooltip_) {
+            label_.set_tooltip_markup(tooltip_);
+          }
         }
       }
       auto classes = label_.get_style_context()->list_classes();
@@ -128,6 +150,8 @@ auto waybar::modules::Custom::update() -> void {
       event_box_.show();
     }
   }
+  // Call parent update
+  ALabel::update();
 }
 
 void waybar::modules::Custom::parseOutputRaw() {

src/modules/disk.cpp

@@ -44,19 +44,32 @@ auto waybar::modules::Disk::update() -> void {
     return;
   }
 
-  auto free = pow_format(stats.f_bavail * stats.f_bsize, "B", true);
+  auto free = pow_format(stats.f_bavail * stats.f_frsize, "B", true);
-  auto used = pow_format((stats.f_blocks - stats.f_bavail) * stats.f_bsize, "B", true);
+  auto used = pow_format((stats.f_blocks - stats.f_bavail) * stats.f_frsize, "B", true);
-  auto total = pow_format(stats.f_blocks * stats.f_bsize, "B", true);
+  auto total = pow_format(stats.f_blocks * stats.f_frsize, "B", true);
+  auto percentage_used = (stats.f_blocks - stats.f_bavail) * 100 / stats.f_blocks;
 
-  label_.set_markup(fmt::format(format_
+  auto format = format_;
+  auto state = getState(percentage_used);
+  if (!state.empty() && config_["format-" + state].isString()) {
+    format = config_["format-" + state].asString();
+  }
+
+  if (format.empty()) {
+    event_box_.hide();
+  } else {
+    event_box_.show();
+    label_.set_markup(fmt::format(format
         , stats.f_bavail * 100 / stats.f_blocks
         , fmt::arg("free", free)
         , fmt::arg("percentage_free", stats.f_bavail * 100 / stats.f_blocks)
         , fmt::arg("used", used)
-      , fmt::arg("percentage_used", (stats.f_blocks - stats.f_bavail) * 100 / stats.f_blocks)
+        , fmt::arg("percentage_used", percentage_used)
         , fmt::arg("total", total)
         , fmt::arg("path", path_)
         ));
+  }
+
   if (tooltipEnabled()) {
     std::string tooltip_format = "{used} used out of {total} on {path} ({percentage_used}%)";
     if (config_["tooltip-format"].isString()) {
@@ -67,10 +80,11 @@ auto waybar::modules::Disk::update() -> void {
       , fmt::arg("free", free)
       , fmt::arg("percentage_free", stats.f_bavail * 100 / stats.f_blocks)
       , fmt::arg("used", used)
-      , fmt::arg("percentage_used", (stats.f_blocks - stats.f_bavail) * 100 / stats.f_blocks)
+      , fmt::arg("percentage_used", percentage_used)
       , fmt::arg("total", total)
       , fmt::arg("path", path_)
       ));
   }
-  event_box_.show();
+  // Call parent update
+  ALabel::update();
 }

src/modules/idle_inhibitor.cpp

@@ -1,16 +1,28 @@
 #include "modules/idle_inhibitor.hpp"
+
+#include "idle-inhibit-unstable-v1-client-protocol.h"
 #include "util/command.hpp"
 
+std::list<waybar::AModule*> waybar::modules::IdleInhibitor::modules;
+bool                        waybar::modules::IdleInhibitor::status = false;
+
 waybar::modules::IdleInhibitor::IdleInhibitor(const std::string& id, const Bar& bar,
                                               const Json::Value& config)
     : ALabel(config, "idle_inhibitor", id, "{status}"),
       bar_(bar),
-      status_("deactivated"),
       idle_inhibitor_(nullptr),
       pid_(-1) {
+  if (waybar::Client::inst()->idle_inhibit_manager == nullptr) {
+    throw std::runtime_error("idle-inhibit not available");
+  }
+
   event_box_.add_events(Gdk::BUTTON_PRESS_MASK);
   event_box_.signal_button_press_event().connect(
       sigc::mem_fun(*this, &IdleInhibitor::handleToggle));
+
+  // Add this to the modules list
+  waybar::modules::IdleInhibitor::modules.push_back(this);
+
   dp.emit();
 }
 
@@ -19,6 +31,10 @@ waybar::modules::IdleInhibitor::~IdleInhibitor() {
     zwp_idle_inhibitor_v1_destroy(idle_inhibitor_);
     idle_inhibitor_ = nullptr;
   }
+
+  // Remove this from the modules list
+  waybar::modules::IdleInhibitor::modules.remove(this);
+
   if (pid_ != -1) {
     kill(-pid_, 9);
     pid_ = -1;
@@ -26,28 +42,44 @@ waybar::modules::IdleInhibitor::~IdleInhibitor() {
 }
 
 auto waybar::modules::IdleInhibitor::update() -> void {
-  label_.set_markup(
+  // Check status
-      fmt::format(format_, fmt::arg("status", status_), fmt::arg("icon", getIcon(0, status_))));
+  if (status) {
-  label_.get_style_context()->add_class(status_);
+    label_.get_style_context()->remove_class("deactivated");
-  if (tooltipEnabled()) {
+    if (idle_inhibitor_ == nullptr) {
-    label_.set_tooltip_text(status_);
+      idle_inhibitor_ = zwp_idle_inhibit_manager_v1_create_inhibitor(
+        waybar::Client::inst()->idle_inhibit_manager, bar_.surface);
     }
+  } else {
+    label_.get_style_context()->remove_class("activated");
+    if (idle_inhibitor_ != nullptr) {
+      zwp_idle_inhibitor_v1_destroy(idle_inhibitor_);
+      idle_inhibitor_ = nullptr;
+    }
+  }
+
+  std::string status_text = status ? "activated" : "deactivated";
+  label_.set_markup(
+      fmt::format(format_, fmt::arg("status", status_text), fmt::arg("icon", getIcon(0, status_text))));
+  label_.get_style_context()->add_class(status_text);
+  if (tooltipEnabled()) {
+    label_.set_tooltip_text(status_text);
+  }
+  // Call parent update
+  ALabel::update();
 }
 
 bool waybar::modules::IdleInhibitor::handleToggle(GdkEventButton* const& e) {
   if (e->button == 1) {
-    label_.get_style_context()->remove_class(status_);
+    status = !status;
-    if (idle_inhibitor_ != nullptr) {
+
-      zwp_idle_inhibitor_v1_destroy(idle_inhibitor_);
+    // Make all other idle inhibitor modules update
-      idle_inhibitor_ = nullptr;
+    for (auto const& module : waybar::modules::IdleInhibitor::modules) {
-      status_ = "deactivated";
+      if (module != this) {
-    } else {
+        module->update();
-      idle_inhibitor_ = zwp_idle_inhibit_manager_v1_create_inhibitor(
-          waybar::Client::inst()->idle_inhibit_manager, bar_.surface);
-      status_ = "activated";
       }
-    click_param = status_;
     }
+  }
+
   ALabel::handleToggle(e);
   return true;
 }

src/modules/memory.cpp

@@ -1,66 +0,0 @@
-#include "modules/memory.hpp"
-
-waybar::modules::Memory::Memory(const std::string& id, const Json::Value& config)
-    : ALabel(config, "memory", id, "{}%", 30) {
-  thread_ = [this] {
-    dp.emit();
-    thread_.sleep_for(interval_);
-  };
-}
-
-auto waybar::modules::Memory::update() -> void {
-  parseMeminfo();
-  if (memtotal_ > 0 && memfree_ >= 0) {
-    auto total_ram_gigabytes = memtotal_ / std::pow(1024, 2);
-    int  used_ram_percentage = 100 * (memtotal_ - memfree_) / memtotal_;
-    auto used_ram_gigabytes = (memtotal_ - memfree_) / std::pow(1024, 2);
-    auto available_ram_gigabytes = memfree_ / std::pow(1024, 2);
-
-    getState(used_ram_percentage);
-    label_.set_markup(fmt::format(format_,
-                                  used_ram_percentage,
-                                  fmt::arg("total", total_ram_gigabytes),
-                                  fmt::arg("percentage", used_ram_percentage),
-                                  fmt::arg("used", used_ram_gigabytes),
-                                  fmt::arg("avail", available_ram_gigabytes)));
-    if (tooltipEnabled()) {
-      label_.set_tooltip_text(fmt::format("{:.{}f}Gb used", used_ram_gigabytes, 1));
-    }
-    event_box_.show();
-  } else {
-    event_box_.hide();
-  }
-}
-
-void waybar::modules::Memory::parseMeminfo() {
-  int64_t       memfree = -1, membuffer = -1, memcache = -1, memavail = -1;
-  std::ifstream info(data_dir_);
-  if (!info.is_open()) {
-    throw std::runtime_error("Can't open " + data_dir_);
-  }
-  std::string line;
-  while (getline(info, line)) {
-    auto posDelim = line.find(':');
-    if (posDelim == std::string::npos) {
-      continue;
-    }
-    std::string name = line.substr(0, posDelim);
-    int64_t     value = std::stol(line.substr(posDelim + 1));
-
-    if (name.compare("MemTotal") == 0) {
-      memtotal_ = value;
-    } else if (name.compare("MemAvailable") == 0) {
-      memavail = value;
-    } else if (name.compare("MemFree") == 0) {
-      memfree = value;
-    } else if (name.compare("Buffers") == 0) {
-      membuffer = value;
-    } else if (name.compare("Cached") == 0) {
-      memcache = value;
-    }
-    if (memtotal_ > 0 && (memavail >= 0 || (memfree > -1 && membuffer > -1 && memcache > -1))) {
-      break;
-    }
-  }
-  memfree_ = memavail >= 0 ? memavail : memfree + membuffer + memcache;
-}

src/modules/memory/bsd.cpp

@@ -0,0 +1,89 @@
+#include "modules/memory.hpp"
+
+#include <sys/types.h>
+#include <sys/sysctl.h>
+#include <unistd.h>           // getpagesize
+
+#if defined(__DragonFly__)
+#  include <sys/vmmeter.h>    // struct vmstats
+#elif defined(__NetBSD__)
+#  include <uvm/uvm_extern.h> // struct uvmexp_sysctl
+#elif defined(__OpenBSD__)
+#  include <uvm/uvmexp.h>     // struct uvmexp
+#endif
+
+static uint64_t get_total_memory() {
+#if defined(HW_MEMSIZE) || defined(HW_PHYSMEM64)
+  uint64_t physmem;
+#else
+  u_long physmem;
+#endif
+  int mib[] = {
+    CTL_HW,
+#if defined(HW_MEMSIZE)
+    HW_MEMSIZE,
+#elif defined(HW_PHYSMEM64)
+    HW_PHYSMEM64,
+#else
+    HW_PHYSMEM,
+#endif
+  };
+  u_int miblen = sizeof(mib) / sizeof(mib[0]);
+  size_t sz = sizeof(physmem);
+  if (sysctl(mib, miblen, &physmem, &sz, NULL, 0)) {
+    throw std::runtime_error("sysctl hw.physmem failed");
+  }
+  return physmem;
+}
+
+static uint64_t get_free_memory() {
+#if defined(__DragonFly__)
+  struct vmstats vms;
+  size_t sz = sizeof(vms);
+  if (sysctlbyname("vm.vmstats", &vms, &sz, NULL, 0)) {
+    throw std::runtime_error("sysctl vm.vmstats failed");
+  }
+  return static_cast<uint64_t>
+    (vms.v_free_count + vms.v_inactive_count + vms.v_cache_count)
+    * getpagesize();
+#elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
+  u_int v_free_count = 0, v_inactive_count = 0, v_cache_count = 0;
+  size_t sz = sizeof(u_int);
+  sysctlbyname("vm.stats.vm.v_free_count",
+               &v_free_count, &sz, NULL, 0);
+  sysctlbyname("vm.stats.vm.v_inactive_count",
+               &v_inactive_count, &sz, NULL, 0);
+  sysctlbyname("vm.stats.vm.v_cache_count",
+               &v_cache_count, &sz, NULL, 0);
+  return static_cast<uint64_t>
+    (v_free_count + v_inactive_count + v_cache_count)
+    * getpagesize();
+#elif defined(__NetBSD__) || defined(__OpenBSD__)
+#ifdef VM_UVMEXP2
+#  undef VM_UVMEXP
+#  define VM_UVMEXP VM_UVMEXP2
+#  define uvmexp uvmexp_sysctl
+#else
+#  define filepages vnodepages
+#  define execpages vtextpages
+#endif
+  int mib[] = {
+    CTL_VM,
+    VM_UVMEXP,
+  };
+  u_int miblen = sizeof(mib) / sizeof(mib[0]);
+  struct uvmexp uvmexp;
+  size_t sz = sizeof(uvmexp);
+  if (sysctl(mib, miblen, &uvmexp, &sz, NULL, 0)) {
+    throw std::runtime_error("sysctl vm.uvmexp failed");
+  }
+  return static_cast<uint64_t>
+    (uvmexp.free + uvmexp.inactive + uvmexp.filepages + uvmexp.execpages)
+    * uvmexp.pagesize;
+#endif
+}
+
+void waybar::modules::Memory::parseMeminfo() {
+  meminfo_["MemTotal"] = get_total_memory() / 1024;
+  meminfo_["MemAvailable"] = get_free_memory() / 1024;
+}

src/modules/memory/common.cpp

@@ -0,0 +1,67 @@
+#include "modules/memory.hpp"
+
+waybar::modules::Memory::Memory(const std::string& id, const Json::Value& config)
+    : ALabel(config, "memory", id, "{}%", 30) {
+  thread_ = [this] {
+    dp.emit();
+    thread_.sleep_for(interval_);
+  };
+}
+
+auto waybar::modules::Memory::update() -> void {
+  parseMeminfo();
+
+  unsigned long memtotal = meminfo_["MemTotal"];
+  unsigned long memfree;
+  if (meminfo_.count("MemAvailable")) {
+    // New kernels (3.4+) have an accurate available memory field.
+    memfree = meminfo_["MemAvailable"];
+  } else {
+    // Old kernel; give a best-effort approximation of available memory.
+    memfree = meminfo_["MemFree"] + meminfo_["Buffers"] + meminfo_["Cached"] +
+              meminfo_["SReclaimable"] - meminfo_["Shmem"];
+  }
+
+  if (memtotal > 0 && memfree >= 0) {
+    auto total_ram_gigabytes = memtotal / std::pow(1024, 2);
+    int  used_ram_percentage = 100 * (memtotal - memfree) / memtotal;
+    auto used_ram_gigabytes = (memtotal - memfree) / std::pow(1024, 2);
+    auto available_ram_gigabytes = memfree / std::pow(1024, 2);
+
+    auto format = format_;
+    auto state = getState(used_ram_percentage);
+    if (!state.empty() && config_["format-" + state].isString()) {
+      format = config_["format-" + state].asString();
+    }
+
+    if (format.empty()) {
+      event_box_.hide();
+    } else {
+      event_box_.show();
+      label_.set_markup(fmt::format(format,
+                                    used_ram_percentage,
+                                    fmt::arg("total", total_ram_gigabytes),
+                                    fmt::arg("percentage", used_ram_percentage),
+                                    fmt::arg("used", used_ram_gigabytes),
+                                    fmt::arg("avail", available_ram_gigabytes)));
+    }
+
+    if (tooltipEnabled()) {
+      if (config_["tooltip-format"].isString()) {
+        auto tooltip_format = config_["tooltip-format"].asString();
+        label_.set_tooltip_text(fmt::format(tooltip_format,
+                                            used_ram_percentage,
+                                            fmt::arg("total", total_ram_gigabytes),
+                                            fmt::arg("percentage", used_ram_percentage),
+                                            fmt::arg("used", used_ram_gigabytes),
+                                            fmt::arg("avail", available_ram_gigabytes)));
+      } else {
+        label_.set_tooltip_text(fmt::format("{:.{}f}GiB used", used_ram_gigabytes, 1));
+      }
+    }
+  } else {
+    event_box_.hide();
+  }
+  // Call parent update
+  ALabel::update();
+}

src/modules/memory/linux.cpp

@@ -0,0 +1,20 @@
+#include "modules/memory.hpp"
+
+void waybar::modules::Memory::parseMeminfo() {
+  const std::string data_dir_ = "/proc/meminfo";
+  std::ifstream info(data_dir_);
+  if (!info.is_open()) {
+    throw std::runtime_error("Can't open " + data_dir_);
+  }
+  std::string line;
+  while (getline(info, line)) {
+    auto posDelim = line.find(':');
+    if (posDelim == std::string::npos) {
+      continue;
+    }
+
+    std::string name = line.substr(0, posDelim);
+    int64_t     value = std::stol(line.substr(posDelim + 1));
+    meminfo_[name] = value;
+  }
+}

src/modules/mpd/mpd.cpp

@@ -1,16 +1,23 @@
-#include "modules/mpd.hpp"
+#include "modules/mpd/mpd.hpp"
 
 #include <fmt/chrono.h>
 #include <spdlog/spdlog.h>
+#include <glibmm/ustring.h>
+#include "modules/mpd/state.hpp"
+#if defined(MPD_NOINLINE)
+namespace waybar::modules {
+#include "modules/mpd/state.inl.hpp"
+}  // namespace waybar::modules
+#endif
 
 waybar::modules::MPD::MPD(const std::string& id, const Json::Value& config)
     : ALabel(config, "mpd", id, "{album} - {artist} - {title}", 5),
       module_name_(id.empty() ? "mpd" : "mpd#" + id),
       server_(nullptr),
       port_(config_["port"].isUInt() ? config["port"].asUInt() : 0),
+      password_(config_["password"].empty() ? "" : config_["password"].asString()),
       timeout_(config_["timeout"].isUInt() ? config_["timeout"].asUInt() * 1'000 : 30'000),
       connection_(nullptr, &mpd_connection_free),
-      alternate_connection_(nullptr, &mpd_connection_free),
       status_(nullptr, &mpd_status_free),
       song_(nullptr, &mpd_song_free) {
   if (!config_["port"].isNull() && !config_["port"].isUInt()) {
@@ -28,66 +35,33 @@ waybar::modules::MPD::MPD(const std::string& id, const Json::Value& config)
     server_ = config["server"].asCString();
   }
 
-  event_listener().detach();
-
   event_box_.add_events(Gdk::BUTTON_PRESS_MASK);
   event_box_.signal_button_press_event().connect(sigc::mem_fun(*this, &MPD::handlePlayPause));
 }
 
 auto waybar::modules::MPD::update() -> void {
-  std::lock_guard guard(connection_lock_);
+  context_.update();
-  tryConnect();
 
+  // Call parent update
+  ALabel::update();
+}
+
+void waybar::modules::MPD::queryMPD() {
   if (connection_ != nullptr) {
+    spdlog::debug("{}: fetching state information", module_name_);
     try {
-      bool wasPlaying = playing();
-      if(!wasPlaying) {
-        // Wait until the periodic_updater has stopped
-        std::lock_guard periodic_guard(periodic_lock_);
-      }
       fetchState();
-      if (!wasPlaying && playing()) {
+      spdlog::debug("{}: fetch complete", module_name_);
-        periodic_updater().detach();
+    } catch (std::exception const& e) {
-      }
-    } catch (const std::exception& e) {
       spdlog::error("{}: {}", module_name_, e.what());
       state_ = MPD_STATE_UNKNOWN;
     }
-  }
 
-  setLabel();
-}
-
-std::thread waybar::modules::MPD::event_listener() {
-  return std::thread([this] {
-    while (true) {
-      try {
-        if (connection_ == nullptr) {
-          // Retry periodically if no connection
-          dp.emit();
-          std::this_thread::sleep_for(interval_);
-        } else {
-          waitForEvent();
     dp.emit();
   }
-      } catch (const std::exception& e) {
-        spdlog::warn("{}: {}", module_name_, e.what());
-      }
-    }
-  });
 }
 
-std::thread waybar::modules::MPD::periodic_updater() {
+std::string waybar::modules::MPD::getTag(mpd_tag_type type, unsigned idx) const {
-  return std::thread([this] {
-    std::lock_guard guard(periodic_lock_);
-    while (connection_ != nullptr && playing()) {
-      dp.emit();
-      std::this_thread::sleep_for(std::chrono::seconds(1));
-    }
-  });
-}
-
-std::string waybar::modules::MPD::getTag(mpd_tag_type type, unsigned idx) {
   std::string result =
       config_["unknown-tag"].isString() ? config_["unknown-tag"].asString() : "N/A";
   const char* tag = mpd_song_get_tag(song_.get(), type, idx);
@@ -124,8 +98,9 @@ void waybar::modules::MPD::setLabel() {
   }
 
   auto format = format_;
-
+  Glib::ustring        artist, album_artist, album, title;
-  std::string          artist, album_artist, album, title, date;
+  std::string          date;
+  int                  song_pos = 0, queue_length = 0;
   std::chrono::seconds elapsedTime, totalTime;
 
   std::string stateIcon = "";
@@ -141,8 +116,8 @@ void waybar::modules::MPD::setLabel() {
       label_.get_style_context()->add_class("playing");
       label_.get_style_context()->remove_class("paused");
     } else if (paused()) {
-      format =
+      format = config_["format-paused"].isString() ? config_["format-paused"].asString()
-        config_["format-paused"].isString() ? config_["format-paused"].asString() : config_["format"].asString();
+                                                   : config_["format"].asString();
       label_.get_style_context()->add_class("paused");
       label_.get_style_context()->remove_class("playing");
     }
@@ -154,6 +129,8 @@ void waybar::modules::MPD::setLabel() {
     album = getTag(MPD_TAG_ALBUM);
     title = getTag(MPD_TAG_TITLE);
     date = getTag(MPD_TAG_DATE);
+    song_pos = mpd_status_get_song_pos(status_.get());
+    queue_length = mpd_status_get_queue_length(status_.get());
     elapsedTime = std::chrono::seconds(mpd_status_get_elapsed_time(status_.get()));
     totalTime = std::chrono::seconds(mpd_status_get_total_time(status_.get()));
   }
@@ -166,8 +143,12 @@ void waybar::modules::MPD::setLabel() {
   std::string repeatIcon = getOptionIcon("repeat", repeatActivated);
   bool        singleActivated = mpd_status_get_single(status_.get());
   std::string singleIcon = getOptionIcon("single", singleActivated);
+  if (config_["artist-len"].isInt()) artist = artist.substr(0, config_["artist-len"].asInt());
+  if (config_["album-artist-len"].isInt()) album_artist = album_artist.substr(0, config_["album-artist-len"].asInt());
+  if (config_["album-len"].isInt()) album = album.substr(0, config_["album-len"].asInt());
+  if (config_["title-len"].isInt()) title = title.substr(0,config_["title-len"].asInt());
 
-  // TODO: format can fail
+  try {
     label_.set_markup(
         fmt::format(format,
                     fmt::arg("artist", Glib::Markup::escape_text(artist).raw()),
@@ -177,32 +158,45 @@ void waybar::modules::MPD::setLabel() {
                     fmt::arg("date", Glib::Markup::escape_text(date).raw()),
                     fmt::arg("elapsedTime", elapsedTime),
                     fmt::arg("totalTime", totalTime),
+                    fmt::arg("songPosition", song_pos),
+                    fmt::arg("queueLength", queue_length),
                     fmt::arg("stateIcon", stateIcon),
                     fmt::arg("consumeIcon", consumeIcon),
                     fmt::arg("randomIcon", randomIcon),
                     fmt::arg("repeatIcon", repeatIcon),
                     fmt::arg("singleIcon", singleIcon)));
+  } catch (fmt::format_error const& e) {
+    spdlog::warn("mpd: format error: {}", e.what());
+  }
 
   if (tooltipEnabled()) {
     std::string tooltip_format;
     tooltip_format = config_["tooltip-format"].isString() ? config_["tooltip-format"].asString()
                                                           : "MPD (connected)";
+    try {
       auto tooltip_text = fmt::format(tooltip_format,
-                                    fmt::arg("artist", artist),
+                                      fmt::arg("artist", artist.raw()),
-                                    fmt::arg("albumArtist", album_artist),
+                                      fmt::arg("albumArtist", album_artist.raw()),
-                                    fmt::arg("album", album),
+                                      fmt::arg("album", album.raw()),
-                                    fmt::arg("title", title),
+                                      fmt::arg("title", title.raw()),
                                       fmt::arg("date", date),
+                                      fmt::arg("elapsedTime", elapsedTime),
+                                      fmt::arg("totalTime", totalTime),
+                                      fmt::arg("songPosition", song_pos),
+                                      fmt::arg("queueLength", queue_length),
                                       fmt::arg("stateIcon", stateIcon),
                                       fmt::arg("consumeIcon", consumeIcon),
                                       fmt::arg("randomIcon", randomIcon),
                                       fmt::arg("repeatIcon", repeatIcon),
                                       fmt::arg("singleIcon", singleIcon));
       label_.set_tooltip_text(tooltip_text);
+    } catch (fmt::format_error const& e) {
+      spdlog::warn("mpd: format error (tooltip): {}", e.what());
+    }
   }
 }
 
-std::string waybar::modules::MPD::getStateIcon() {
+std::string waybar::modules::MPD::getStateIcon() const {
   if (!config_["state-icons"].isObject()) {
     return "";
   }
@@ -224,7 +218,7 @@ std::string waybar::modules::MPD::getStateIcon() {
   }
 }
 
-std::string waybar::modules::MPD::getOptionIcon(std::string optionName, bool activated) {
+std::string waybar::modules::MPD::getOptionIcon(std::string optionName, bool activated) const {
   if (!config_[optionName + "-icons"].isObject()) {
     return "";
   }
@@ -247,25 +241,30 @@ void waybar::modules::MPD::tryConnect() {
   }
 
   connection_ =
-      unique_connection(mpd_connection_new(server_, port_, timeout_), &mpd_connection_free);
+      detail::unique_connection(mpd_connection_new(server_, port_, timeout_), &mpd_connection_free);
 
-  alternate_connection_ =
+  if (connection_ == nullptr) {
-      unique_connection(mpd_connection_new(server_, port_, timeout_), &mpd_connection_free);
-
-  if (connection_ == nullptr || alternate_connection_ == nullptr) {
     spdlog::error("{}: Failed to connect to MPD", module_name_);
     connection_.reset();
-    alternate_connection_.reset();
     return;
   }
 
   try {
     checkErrors(connection_.get());
-    spdlog::info("{}: Connected to MPD", module_name_);
+    spdlog::debug("{}: Connected to MPD", module_name_);
+
+    if (!password_.empty()) {
+      bool res = mpd_run_password(connection_.get(), password_.c_str());
+      if (!res) {
+        spdlog::error("{}: Wrong MPD password", module_name_);
+        connection_.reset();
+        return;
+      }
+      checkErrors(connection_.get());
+    }
   } catch (std::runtime_error& e) {
     spdlog::error("{}: Failed to connect to MPD: {}", module_name_, e.what());
     connection_.reset();
-    alternate_connection_.reset();
   }
 }
 
@@ -278,48 +277,34 @@ void waybar::modules::MPD::checkErrors(mpd_connection* conn) {
     case MPD_ERROR_CLOSED:
       mpd_connection_clear_error(conn);
       connection_.reset();
-      alternate_connection_.reset();
       state_ = MPD_STATE_UNKNOWN;
       throw std::runtime_error("Connection to MPD closed");
     default:
+      if (conn) {
         auto error_message = mpd_connection_get_error_message(conn);
+        std::string error(error_message);
         mpd_connection_clear_error(conn);
-      throw std::runtime_error(std::string(error_message));
+        throw std::runtime_error(error);
+      }
+      throw std::runtime_error("Invalid connection");
   }
 }
 
 void waybar::modules::MPD::fetchState() {
+  if (connection_ == nullptr) {
+    spdlog::error("{}: Not connected to MPD", module_name_);
+    return;
+  }
+
   auto conn = connection_.get();
-  status_ = unique_status(mpd_run_status(conn), &mpd_status_free);
+
+  status_ = detail::unique_status(mpd_run_status(conn), &mpd_status_free);
   checkErrors(conn);
+
   state_ = mpd_status_get_state(status_.get());
   checkErrors(conn);
 
-  song_ = unique_song(mpd_run_current_song(conn), &mpd_song_free);
+  song_ = detail::unique_song(mpd_run_current_song(conn), &mpd_song_free);
-  checkErrors(conn);
-}
-
-void waybar::modules::MPD::waitForEvent() {
-  auto conn = alternate_connection_.get();
-  // Wait for a player (play/pause), option (random, shuffle, etc.), or playlist
-  // change
-  if (!mpd_send_idle_mask(
-          conn, static_cast<mpd_idle>(MPD_IDLE_PLAYER | MPD_IDLE_OPTIONS | MPD_IDLE_QUEUE))) {
-    checkErrors(conn);
-    return;
-  }
-  // alternate_idle_ = true;
-
-  // See issue #277:
-  // https://github.com/Alexays/Waybar/issues/277
-  mpd_recv_idle(conn, /* disable_timeout = */ false);
-  // See issue #281:
-  // https://github.com/Alexays/Waybar/issues/281
-  std::lock_guard guard(connection_lock_);
-
-  checkErrors(conn);
-  mpd_response_finish(conn);
-
   checkErrors(conn);
 }
 
@@ -329,24 +314,13 @@ bool waybar::modules::MPD::handlePlayPause(GdkEventButton* const& e) {
   }
 
   if (e->button == 1) {
-    std::lock_guard guard(connection_lock_);
+    if (state_ == MPD_STATE_PLAY)
-    if (stopped()) {
+      context_.pause();
-      mpd_run_play(connection_.get());
+    else
-    } else {
+      context_.play();
-      mpd_run_toggle_pause(connection_.get());
-    }
   } else if (e->button == 3) {
-    std::lock_guard guard(connection_lock_);
+    context_.stop();
-    mpd_run_stop(connection_.get());
   }
 
   return true;
 }
-
-bool waybar::modules::MPD::stopped() {
-  return connection_ == nullptr || state_ == MPD_STATE_UNKNOWN || state_ == MPD_STATE_STOP;
-}
-
-bool waybar::modules::MPD::playing() { return connection_ != nullptr && state_ == MPD_STATE_PLAY; }
-
-bool waybar::modules::MPD::paused() { return connection_ != nullptr && state_ == MPD_STATE_PAUSE; }

src/modules/mpd/state.cpp

@@ -0,0 +1,383 @@
+#include "modules/mpd/state.hpp"
+
+#include <fmt/chrono.h>
+#include <spdlog/spdlog.h>
+
+#include "modules/mpd/mpd.hpp"
+#if defined(MPD_NOINLINE)
+namespace waybar::modules {
+#include "modules/mpd/state.inl.hpp"
+}  // namespace waybar::modules
+#endif
+
+namespace waybar::modules::detail {
+
+#define IDLE_RUN_NOIDLE_AND_CMD(...)                                      \
+  if (idle_connection_.connected()) {                                     \
+    idle_connection_.disconnect();                                        \
+    auto conn = ctx_->connection().get();                                 \
+    if (!mpd_run_noidle(conn)) {                                          \
+      if (mpd_connection_get_error(conn) != MPD_ERROR_SUCCESS) {          \
+        spdlog::error("mpd: Idle: failed to unregister for IDLE events"); \
+        ctx_->checkErrors(conn);                                          \
+      }                                                                   \
+    }                                                                     \
+    __VA_ARGS__;                                                          \
+  }
+
+void Idle::play() {
+  IDLE_RUN_NOIDLE_AND_CMD(mpd_run_play(conn));
+
+  ctx_->setState(std::make_unique<Playing>(ctx_));
+}
+
+void Idle::pause() {
+  IDLE_RUN_NOIDLE_AND_CMD(mpd_run_pause(conn, true));
+
+  ctx_->setState(std::make_unique<Paused>(ctx_));
+}
+
+void Idle::stop() {
+  IDLE_RUN_NOIDLE_AND_CMD(mpd_run_stop(conn));
+
+  ctx_->setState(std::make_unique<Stopped>(ctx_));
+}
+
+#undef IDLE_RUN_NOIDLE_AND_CMD
+
+void Idle::update() noexcept {
+  // This is intentionally blank.
+}
+
+void Idle::entry() noexcept {
+  auto            conn = ctx_->connection().get();
+  assert(conn != nullptr);
+
+  if (!mpd_send_idle_mask(
+          conn, static_cast<mpd_idle>(MPD_IDLE_PLAYER | MPD_IDLE_OPTIONS | MPD_IDLE_QUEUE))) {
+    ctx_->checkErrors(conn);
+    spdlog::error("mpd: Idle: failed to register for IDLE events");
+  } else {
+    spdlog::debug("mpd: Idle: watching FD");
+    sigc::slot<bool, Glib::IOCondition const&> idle_slot = sigc::mem_fun(*this, &Idle::on_io);
+    idle_connection_ =
+        Glib::signal_io().connect(idle_slot,
+                                  mpd_connection_get_fd(conn),
+                                  Glib::IO_IN | Glib::IO_PRI | Glib::IO_ERR | Glib::IO_HUP);
+  }
+}
+
+void Idle::exit() noexcept {
+  if (idle_connection_.connected()) {
+    idle_connection_.disconnect();
+    spdlog::debug("mpd: Idle: unwatching FD");
+  }
+}
+
+bool Idle::on_io(Glib::IOCondition const&) {
+  auto                         conn = ctx_->connection().get();
+
+  // callback should do this:
+  enum mpd_idle events = mpd_recv_idle(conn, /* ignore_timeout?= */ false);
+  spdlog::debug("mpd: Idle: recv_idle events -> {}", events);
+
+  mpd_response_finish(conn);
+  try {
+    ctx_->checkErrors(conn);
+  } catch (std::exception const& e) {
+    spdlog::warn("mpd: Idle: error: {}", e.what());
+    ctx_->setState(std::make_unique<Disconnected>(ctx_));
+    return false;
+  }
+
+  ctx_->fetchState();
+  mpd_state state = ctx_->state();
+
+  if (state == MPD_STATE_STOP) {
+    ctx_->emit();
+    ctx_->setState(std::make_unique<Stopped>(ctx_));
+  } else if (state == MPD_STATE_PLAY) {
+    ctx_->emit();
+    ctx_->setState(std::make_unique<Playing>(ctx_));
+  } else if (state == MPD_STATE_PAUSE) {
+    ctx_->emit();
+    ctx_->setState(std::make_unique<Paused>(ctx_));
+  } else {
+    ctx_->emit();
+    // self transition
+    ctx_->setState(std::make_unique<Idle>(ctx_));
+  }
+
+  return false;
+}
+
+void Playing::entry() noexcept {
+  sigc::slot<bool> timer_slot = sigc::mem_fun(*this, &Playing::on_timer);
+  timer_connection_ = Glib::signal_timeout().connect(timer_slot, /* milliseconds */ 1'000);
+  spdlog::debug("mpd: Playing: enabled 1 second periodic timer.");
+}
+
+void Playing::exit() noexcept {
+  if (timer_connection_.connected()) {
+    timer_connection_.disconnect();
+    spdlog::debug("mpd: Playing: disabled 1 second periodic timer.");
+  }
+}
+
+bool Playing::on_timer() {
+  // Attempt to connect with MPD.
+  try {
+    ctx_->tryConnect();
+
+    // Success?
+    if (!ctx_->is_connected()) {
+      ctx_->setState(std::make_unique<Disconnected>(ctx_));
+      return false;
+    }
+
+    ctx_->fetchState();
+
+    if (!ctx_->is_playing()) {
+      if (ctx_->is_paused()) {
+        ctx_->setState(std::make_unique<Paused>(ctx_));
+      } else {
+        ctx_->setState(std::make_unique<Stopped>(ctx_));
+      }
+      return false;
+    }
+
+    ctx_->queryMPD();
+    ctx_->emit();
+  } catch (std::exception const& e) {
+    spdlog::warn("mpd: Playing: error: {}", e.what());
+    ctx_->setState(std::make_unique<Disconnected>(ctx_));
+    return false;
+  }
+
+  return true;
+}
+
+void Playing::stop() {
+  if (timer_connection_.connected()) {
+    timer_connection_.disconnect();
+
+    mpd_run_stop(ctx_->connection().get());
+  }
+
+  ctx_->setState(std::make_unique<Stopped>(ctx_));
+}
+
+void Playing::pause() {
+  if (timer_connection_.connected()) {
+    timer_connection_.disconnect();
+
+    mpd_run_pause(ctx_->connection().get(), true);
+  }
+
+  ctx_->setState(std::make_unique<Paused>(ctx_));
+}
+
+void Playing::update() noexcept { ctx_->do_update(); }
+
+void Paused::entry() noexcept {
+  sigc::slot<bool> timer_slot = sigc::mem_fun(*this, &Paused::on_timer);
+  timer_connection_ = Glib::signal_timeout().connect(timer_slot, /* milliseconds */ 200);
+  spdlog::debug("mpd: Paused: enabled 200 ms periodic timer.");
+}
+
+void Paused::exit() noexcept {
+  if (timer_connection_.connected()) {
+    timer_connection_.disconnect();
+    spdlog::debug("mpd: Paused: disabled 200 ms periodic timer.");
+  }
+}
+
+bool Paused::on_timer() {
+  bool                         rc = true;
+
+  // Attempt to connect with MPD.
+  try {
+    ctx_->tryConnect();
+
+    // Success?
+    if (!ctx_->is_connected()) {
+      ctx_->setState(std::make_unique<Disconnected>(ctx_));
+      return false;
+    }
+
+    ctx_->fetchState();
+
+    ctx_->emit();
+
+    if (ctx_->is_paused()) {
+      ctx_->setState(std::make_unique<Idle>(ctx_));
+      rc = false;
+    } else if (ctx_->is_playing()) {
+      ctx_->setState(std::make_unique<Playing>(ctx_));
+      rc = false;
+    } else if (ctx_->is_stopped()) {
+      ctx_->setState(std::make_unique<Stopped>(ctx_));
+      rc = false;
+    }
+  } catch (std::exception const& e) {
+    spdlog::warn("mpd: Paused: error: {}", e.what());
+    ctx_->setState(std::make_unique<Disconnected>(ctx_));
+    rc = false;
+  }
+
+  return rc;
+}
+
+void Paused::play() {
+  if (timer_connection_.connected()) {
+    timer_connection_.disconnect();
+
+    mpd_run_play(ctx_->connection().get());
+  }
+
+  ctx_->setState(std::make_unique<Playing>(ctx_));
+}
+
+void Paused::stop() {
+  if (timer_connection_.connected()) {
+    timer_connection_.disconnect();
+
+    mpd_run_stop(ctx_->connection().get());
+  }
+
+  ctx_->setState(std::make_unique<Stopped>(ctx_));
+}
+
+void Paused::update() noexcept { ctx_->do_update(); }
+
+void Stopped::entry() noexcept {
+  sigc::slot<bool> timer_slot = sigc::mem_fun(*this, &Stopped::on_timer);
+  timer_connection_ = Glib::signal_timeout().connect(timer_slot, /* milliseconds */ 200);
+  spdlog::debug("mpd: Stopped: enabled 200 ms periodic timer.");
+}
+
+void Stopped::exit() noexcept {
+  if (timer_connection_.connected()) {
+    timer_connection_.disconnect();
+    spdlog::debug("mpd: Stopped: disabled 200 ms periodic timer.");
+  }
+}
+
+bool Stopped::on_timer() {
+  bool                         rc = true;
+
+  // Attempt to connect with MPD.
+  try {
+    ctx_->tryConnect();
+
+    // Success?
+    if (!ctx_->is_connected()) {
+      ctx_->setState(std::make_unique<Disconnected>(ctx_));
+      return false;
+    }
+
+    ctx_->fetchState();
+
+    ctx_->emit();
+
+    if (ctx_->is_stopped()) {
+      ctx_->setState(std::make_unique<Idle>(ctx_));
+      rc = false;
+    } else if (ctx_->is_playing()) {
+      ctx_->setState(std::make_unique<Playing>(ctx_));
+      rc = false;
+    } else if (ctx_->is_paused()) {
+      ctx_->setState(std::make_unique<Paused>(ctx_));
+      rc = false;
+    }
+  } catch (std::exception const& e) {
+    spdlog::warn("mpd: Stopped: error: {}", e.what());
+    ctx_->setState(std::make_unique<Disconnected>(ctx_));
+    rc = false;
+  }
+
+  return rc;
+}
+
+void Stopped::play() {
+  if (timer_connection_.connected()) {
+    timer_connection_.disconnect();
+
+    mpd_run_play(ctx_->connection().get());
+  }
+
+  ctx_->setState(std::make_unique<Playing>(ctx_));
+}
+
+void Stopped::pause() {
+  if (timer_connection_.connected()) {
+    timer_connection_.disconnect();
+
+    mpd_run_pause(ctx_->connection().get(), true);
+  }
+
+  ctx_->setState(std::make_unique<Paused>(ctx_));
+}
+
+void Stopped::update() noexcept { ctx_->do_update(); }
+
+void Disconnected::arm_timer(int interval) noexcept {
+  // unregister timer, if present
+  disarm_timer();
+
+  // register timer
+  sigc::slot<bool> timer_slot = sigc::mem_fun(*this, &Disconnected::on_timer);
+  timer_connection_ =
+      Glib::signal_timeout().connect(timer_slot, interval);
+  spdlog::debug("mpd: Disconnected: enabled interval timer.");
+}
+
+void Disconnected::disarm_timer() noexcept {
+  // unregister timer, if present
+  if (timer_connection_.connected()) {
+    timer_connection_.disconnect();
+    spdlog::debug("mpd: Disconnected: disabled interval timer.");
+  }
+}
+
+void Disconnected::entry() noexcept {
+  ctx_->emit();
+  arm_timer(1'000);
+}
+
+void Disconnected::exit() noexcept {
+  disarm_timer();
+}
+
+bool Disconnected::on_timer() {
+  // Attempt to connect with MPD.
+  try {
+    ctx_->tryConnect();
+
+    // Success?
+    if (ctx_->is_connected()) {
+      ctx_->fetchState();
+      ctx_->emit();
+
+      if (ctx_->is_playing()) {
+        ctx_->setState(std::make_unique<Playing>(ctx_));
+      } else if (ctx_->is_paused()) {
+        ctx_->setState(std::make_unique<Paused>(ctx_));
+      } else {
+        ctx_->setState(std::make_unique<Stopped>(ctx_));
+      }
+
+      return false;  // do not rearm timer
+    }
+  } catch (std::exception const& e) {
+    spdlog::warn("mpd: Disconnected: error: {}", e.what());
+  }
+
+  arm_timer(ctx_->interval() * 1'000);
+
+  return false;
+}
+
+void Disconnected::update() noexcept { ctx_->do_update(); }
+
+}  // namespace waybar::modules::detail

src/modules/network.cpp

@@ -3,8 +3,11 @@
 #include <sys/eventfd.h>
 #include <fstream>
 #include <cassert>
+#include <optional>
 #include "util/format.hpp"
-
+#ifdef WANT_RFKILL
+#include "util/rfkill.hpp"
+#endif
 
 namespace {
 
@@ -86,6 +89,9 @@ waybar::modules::Network::Network(const std::string &id, const Json::Value &conf
       cidr_(-1),
       signal_strength_dbm_(0),
       signal_strength_(0),
+#ifdef WANT_RFKILL
+      rfkill_{RFKILL_TYPE_WLAN},
+#endif
       frequency_(0) {
   auto down_octets = read_netstat(BANDWIDTH_CATEGORY, BANDWIDTH_DOWN_TOTAL_KEY);
   auto up_octets = read_netstat(BANDWIDTH_CATEGORY, BANDWIDTH_UP_TOTAL_KEY);
@@ -117,8 +123,6 @@ waybar::modules::Network::Network(const std::string &id, const Json::Value &conf
 
 waybar::modules::Network::~Network() {
   if (ev_fd_ > -1) {
-    eventfd_write(ev_fd_, 1);
-    std::this_thread::sleep_for(std::chrono::milliseconds(150));
     close(ev_fd_);
   }
   if (efd_ > -1) {
@@ -191,11 +195,12 @@ void waybar::modules::Network::createInfoSocket() {
   }
   nl80211_id_ = genl_ctrl_resolve(sock_, "nl80211");
   if (nl80211_id_ < 0) {
-    throw std::runtime_error("Can't resolve nl80211 interface");
+    spdlog::warn("Can't resolve nl80211 interface");
   }
 }
 
 void waybar::modules::Network::worker() {
+  // update via here not working
   thread_timer_ = [this] {
     {
       std::lock_guard<std::mutex> lock(mutex_);
@@ -206,6 +211,17 @@ void waybar::modules::Network::worker() {
     }
     thread_timer_.sleep_for(interval_);
   };
+#ifdef WANT_RFKILL
+  rfkill_.on_update.connect([this](auto &) {
+    /* If we are here, it's likely that the network thread already holds the mutex and will be
+     * holding it for a next few seconds.
+     * Let's delegate the update to the timer thread instead of blocking the main thread.
+     */
+    thread_timer_.wake_up();
+  });
+#else
+  spdlog::warn("Waybar has been built without rfkill support.");
+#endif
   thread_ = [this] {
     std::array<struct epoll_event, EPOLL_MAX> events{};
 
@@ -222,7 +238,13 @@ void waybar::modules::Network::worker() {
 }
 
 const std::string waybar::modules::Network::getNetworkState() const {
-  if (ifid_ == -1) return "disconnected";
+  if (ifid_ == -1) {
+#ifdef WANT_RFKILL
+    if (rfkill_.getState())
+      return "disabled";
+#endif
+    return "disconnected";
+  }
   if (ipaddr_.empty()) return "linked";
   if (essid_.empty()) return "ethernet";
   return "wifi";
@@ -279,7 +301,7 @@ auto waybar::modules::Network::update() -> void {
       fmt::arg("bandwidthUpBits", pow_format(bandwidth_up * 8ull / interval_.count(), "b/s")),
       fmt::arg("bandwidthDownOctets", pow_format(bandwidth_down / interval_.count(), "o/s")),
       fmt::arg("bandwidthUpOctets", pow_format(bandwidth_up / interval_.count(), "o/s")));
-  if (text != label_.get_label()) {
+  if (text.compare(label_.get_label()) != 0) {
     label_.set_markup(text);
     if (text.empty()) {
       event_box_.hide();
@@ -308,13 +330,16 @@ auto waybar::modules::Network::update() -> void {
           fmt::arg("bandwidthUpBits", pow_format(bandwidth_up * 8ull / interval_.count(), "b/s")),
           fmt::arg("bandwidthDownOctets", pow_format(bandwidth_down / interval_.count(), "o/s")),
           fmt::arg("bandwidthUpOctets", pow_format(bandwidth_up / interval_.count(), "o/s")));
-      if (label_.get_tooltip_text() != text) {
+      if (label_.get_tooltip_text() != tooltip_text) {
         label_.set_tooltip_text(tooltip_text);
       }
     } else if (label_.get_tooltip_text() != text) {
       label_.set_tooltip_text(text);
     }
   }
+
+  // Call parent update
+  ALabel::update();
 }
 
 // Based on https://gist.github.com/Yawning/c70d804d4b8ae78cc698

src/modules/pulseaudio.cpp

@@ -21,7 +21,7 @@ waybar::modules::Pulseaudio::Pulseaudio(const std::string &id, const Json::Value
   if (context_ == nullptr) {
     throw std::runtime_error("pa_context_new() failed.");
   }
-  if (pa_context_connect(context_, nullptr, PA_CONTEXT_NOAUTOSPAWN, nullptr) < 0) {
+  if (pa_context_connect(context_, nullptr, PA_CONTEXT_NOFAIL, nullptr) < 0) {
     auto err =
         fmt::format("pa_context_connect() failed: {}", pa_strerror(pa_context_errno(context_)));
     throw std::runtime_error(err);
@@ -52,7 +52,8 @@ void waybar::modules::Pulseaudio::contextStateCb(pa_context *c, void *data) {
       pa_context_set_subscribe_callback(c, subscribeCb, data);
       pa_context_subscribe(
           c,
-          static_cast<enum pa_subscription_mask>(static_cast<int>(PA_SUBSCRIPTION_MASK_SINK) |
+          static_cast<enum pa_subscription_mask>(static_cast<int>(PA_SUBSCRIPTION_MASK_SERVER) |
+                                                 static_cast<int>(PA_SUBSCRIPTION_MASK_SINK) |
                                                  static_cast<int>(PA_SUBSCRIPTION_MASK_SOURCE)),
           nullptr,
           nullptr);
@@ -109,7 +110,9 @@ void waybar::modules::Pulseaudio::subscribeCb(pa_context *                 conte
   if (operation != PA_SUBSCRIPTION_EVENT_CHANGE) {
     return;
   }
-  if (facility == PA_SUBSCRIPTION_EVENT_SINK) {
+  if (facility == PA_SUBSCRIPTION_EVENT_SERVER) {
+    pa_context_get_server_info(context, serverInfoCb, data);
+  } else if (facility == PA_SUBSCRIPTION_EVENT_SINK) {
     pa_context_get_sink_info_by_index(context, idx, sinkInfoCb, data);
   } else if (facility == PA_SUBSCRIPTION_EVENT_SOURCE) {
     pa_context_get_source_info_by_index(context, idx, sourceInfoCb, data);
@@ -131,15 +134,15 @@ void waybar::modules::Pulseaudio::volumeModifyCb(pa_context *c, int success, voi
  */
 void waybar::modules::Pulseaudio::sourceInfoCb(pa_context * /*context*/, const pa_source_info *i,
                                                int /*eol*/, void *data) {
-  if (i != nullptr) {
+  auto pa = static_cast<waybar::modules::Pulseaudio *>(data);
-    auto self = static_cast<waybar::modules::Pulseaudio *>(data);
+  if (i != nullptr && pa->default_source_name_ == i->name) {
     auto source_volume = static_cast<float>(pa_cvolume_avg(&(i->volume))) / float{PA_VOLUME_NORM};
-    self->source_volume_ = std::round(source_volume * 100.0F);
+    pa->source_volume_ = std::round(source_volume * 100.0F);
-    self->source_idx_ = i->index;
+    pa->source_idx_ = i->index;
-    self->source_muted_ = i->mute != 0;
+    pa->source_muted_ = i->mute != 0;
-    self->source_desc_ = i->description;
+    pa->source_desc_ = i->description;
-    self->source_port_name_ = i->active_port != nullptr ? i->active_port->name : "Unknown";
+    pa->source_port_name_ = i->active_port != nullptr ? i->active_port->name : "Unknown";
-    self->dp.emit();
+    pa->dp.emit();
   }
 }
 
@@ -147,9 +150,9 @@ void waybar::modules::Pulseaudio::sourceInfoCb(pa_context * /*context*/, const p
  * Called when the requested sink information is ready.
  */
 void waybar::modules::Pulseaudio::sinkInfoCb(pa_context * /*context*/, const pa_sink_info *i,
-                                             int /*eol*/, void *                           data) {
+                                             int /*eol*/, void *data) {
-  if (i != nullptr) {
   auto pa = static_cast<waybar::modules::Pulseaudio *>(data);
+  if (i != nullptr && pa->default_sink_name_ == i->name) {
     pa->pa_volume_ = i->volume;
     float volume = static_cast<float>(pa_cvolume_avg(&(pa->pa_volume_))) / float{PA_VOLUME_NORM};
     pa->sink_idx_ = i->index;
@@ -171,6 +174,10 @@ void waybar::modules::Pulseaudio::sinkInfoCb(pa_context * /*context*/, const pa_
  */
 void waybar::modules::Pulseaudio::serverInfoCb(pa_context *context, const pa_server_info *i,
                                                void *data) {
+  auto pa = static_cast<waybar::modules::Pulseaudio *>(data);
+  pa->default_sink_name_ = i->default_sink_name;
+  pa->default_source_name_ = i->default_source_name;
+
   pa_context_get_sink_info_by_name(context, i->default_sink_name, sinkInfoCb, data);
   pa_context_get_source_info_by_name(context, i->default_source_name, sourceInfoCb, data);
 }
@@ -200,6 +207,7 @@ const std::string waybar::modules::Pulseaudio::getPortIcon() const {
 
 auto waybar::modules::Pulseaudio::update() -> void {
   auto format = format_;
+  if (!alt_) {
     std::string format_name = "format";
     if (monitor_.find("a2dp_sink") != std::string::npos) {
       format_name = format_name + "-bluetooth";
@@ -207,7 +215,11 @@ auto waybar::modules::Pulseaudio::update() -> void {
     } else {
       label_.get_style_context()->remove_class("bluetooth");
     }
-  if (muted_ ) {
+    if (muted_) {
+      // Check muted bluetooth format exist, otherwise fallback to default muted format
+      if (format_name != "format" && !config_[format_name + "-muted"].isString()) {
+        format_name = "format";
+      }
       format_name = format_name + "-muted";
       label_.get_style_context()->add_class("muted");
     } else {
@@ -215,6 +227,7 @@ auto waybar::modules::Pulseaudio::update() -> void {
     }
     format =
       config_[format_name].isString() ? config_[format_name].asString() : format;
+  }
   // TODO: find a better way to split source/sink
   std::string format_source = "{volume}%";
   if (source_muted_ && config_["format-source-muted"].isString()) {
@@ -232,4 +245,7 @@ auto waybar::modules::Pulseaudio::update() -> void {
   if (tooltipEnabled()) {
     label_.set_tooltip_text(desc_);
   }
+
+  // Call parent update
+  ALabel::update();
 }