chore: 0.9.0

Use gtk-layer-shell library for correct positioning of popups

.github/FUNDING.yml

@@ -0,0 +1,3 @@
+# These are supported funding model platforms
+
+custom: https://paypal.me/ARouillard

.travis.yml

@@ -3,17 +3,21 @@ sudo: false
 services:
     - docker
 
+git:
+    submodules: false
+
 env:
     - distro: debian
     - distro: archlinux
-    - distro: opensuse
     - distro: fedora
+    - distro: alpine
 
 before_install:
     - docker pull alexays/waybar:${distro}
+    - find . -type f \( -name '*.cpp' -o -name '*.h' \) -print0 | xargs -r0 clang-format -i
 
 script:
     - echo FROM alexays/waybar:${distro} > Dockerfile
     - echo ADD . /root >> Dockerfile
     - docker build -t waybar .
-    - docker run waybar /bin/sh -c "cd /root && git clone --depth=1 https://github.com/swaywm/wlroots subprojects/wlroots && meson build && ninja -C build"
+    - docker run waybar /bin/sh -c "cd /root && meson build -Dman-pages=enabled && ninja -C build"

Dockerfiles/alpine

@@ -0,0 +1,5 @@
+# vim: ft=Dockerfile
+
+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

Dockerfiles/archlinux

@@ -1,4 +1,6 @@
+# vim: ft=Dockerfile
+
 FROM archlinux/base:latest
 
 RUN pacman -Syu --noconfirm && \
-    pacman -S git meson base-devel libinput wayland wayland-protocols pixman libxkbcommon mesa gtkmm3 jsoncpp --noconfirm
+    pacman -S git meson base-devel libinput wayland wayland-protocols pixman libxkbcommon mesa gtkmm3 jsoncpp scdoc --noconfirm

Dockerfiles/debian

@@ -1,5 +1,7 @@
+# vim: ft=Dockerfile
+
 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 && \
-    apt-get clean
+    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 clean

Dockerfiles/fedora

@@ -1,5 +1,7 @@
+# vim: ft=Dockerfile
+
 FROM fedora:30
 
-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 -y && \
+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 && \
     dnf group install "C Development Tools and Libraries" -y && \
     dnf clean all -y

Dockerfiles/opensuse

@@ -1,5 +1,7 @@
+# vim: ft=Dockerfile
+
 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
+    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

README.md

@@ -2,7 +2,8 @@
 
 > Highly customizable Wayland bar for Sway and Wlroots based compositors.<br>
 > Available in Arch [community](https://www.archlinux.org/packages/community/x86_64/waybar/) or
-[AUR](https://aur.archlinux.org/packages/waybar-git/) and [openSUSE](https://build.opensuse.org/package/show/X11:Wayland/waybar)
+[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**
 - Sway (Workspaces, Binding mode, Focused window name)
@@ -11,6 +12,7 @@
 - Battery
 - Network
 - Pulseaudio
+- Disk
 - Memory
 - Cpu load average
 - Temperature
@@ -42,6 +44,7 @@ $ waybar
 gtkmm3
 jsoncpp
 libinput
+
 libsigc++
 fmt
 wayland
@@ -53,6 +56,13 @@ libdbusmenu-gtk3 [Tray module]
 libmpdclient [MPD module]
 ```
 
+On Ubuntu 19.10 you can install all the relevant dependencies using this command:
+
+```
+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 scdoc libmpdclient-dev
+```
+
+
 Contributions welcome! - have fun :)<br>
 The style guidelines is [Google's](https://google.github.io/styleguide/cppguide.html)
 

include/ALabel.hpp

@@ -1,40 +1,30 @@
 #pragma once
 
 #include <glibmm/markup.h>
-#include <gtkmm/eventbox.h>
 #include <gtkmm/label.h>
 #include <json/json.h>
-#include "IModule.hpp"
+#include "AModule.hpp"
 
 namespace waybar {
 
-class ALabel : public IModule {
+class ALabel : public AModule {
  public:
-  ALabel(const Json::Value &, const std::string &format, uint16_t interval = 0);
-  virtual ~ALabel();
+  ALabel(const Json::Value &, const std::string &, const std::string &, const std::string &format,
+         uint16_t interval = 0, bool ellipsize = false);
+  virtual ~ALabel() = default;
   virtual auto        update() -> void;
-  virtual std::string getIcon(uint16_t, const std::string &alt = "");
-  virtual             operator Gtk::Widget &();
+  virtual std::string getIcon(uint16_t, const std::string &alt = "", uint16_t max = 0);
 
  protected:
-  bool tooltipEnabled();
-
-  Gtk::EventBox              event_box_;
   Gtk::Label                 label_;
-  const Json::Value &        config_;
   std::string                format_;
   std::string                click_param;
-  std::mutex                 mutex_;
   const std::chrono::seconds interval_;
   bool                       alt_ = false;
   std::string                default_format_;
 
-  virtual bool handleToggle(GdkEventButton *const &ev);
-  virtual bool handleScroll(GdkEventScroll *);
-  virtual std::string getState(uint8_t value);
-
- private:
-  std::vector<int> pid_;
+  virtual bool        handleToggle(GdkEventButton *const &e);
+  virtual std::string getState(uint8_t value, bool lesser = false);
 };
 
 }  // namespace waybar

include/AModule.hpp

@@ -0,0 +1,39 @@
+#pragma once
+
+#include <glibmm/dispatcher.h>
+#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 &,
+          bool enable_click = false, bool enable_scroll = false);
+  virtual ~AModule();
+  virtual auto update() -> void;
+  virtual      operator Gtk::Widget &();
+
+  Glib::Dispatcher dp;
+
+ protected:
+  enum SCROLL_DIR { NONE, UP, DOWN, LEFT, RIGHT };
+
+  SCROLL_DIR getScrollDir(GdkEventScroll *e);
+  bool       tooltipEnabled();
+
+  const Json::Value &config_;
+  Gtk::EventBox      event_box_;
+
+  virtual bool handleToggle(GdkEventButton *const &ev);
+  virtual bool handleScroll(GdkEventScroll *);
+
+ private:
+  std::vector<int> pid_;
+  gdouble          distance_scrolled_y_;
+  gdouble          distance_scrolled_x_;
+};
+
+}  // namespace waybar

include/IModule.hpp

@@ -1,7 +1,5 @@
 #pragma once
 
-#include <glibmm/dispatcher.h>
-#include <gtkmm/box.h>
 #include <gtkmm/widget.h>
 
 namespace waybar {
@@ -11,7 +9,6 @@ class IModule {
   virtual ~IModule() = default;
   virtual auto     update() -> void = 0;
   virtual          operator Gtk::Widget &() = 0;
-  Glib::Dispatcher dp;  // Hmmm Maybe I should create an abstract class ?
 };
 
 }  // namespace waybar

include/bar.hpp

@@ -1,11 +1,13 @@
 #pragma once
 
+#include <gdkmm/monitor.h>
 #include <glibmm/refptr.h>
+#include <gtkmm/box.h>
 #include <gtkmm/cssprovider.h>
 #include <gtkmm/main.h>
 #include <gtkmm/window.h>
 #include <json/json.h>
-#include "IModule.hpp"
+#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"
@@ -14,10 +16,11 @@ namespace waybar {
 
 class Factory;
 struct waybar_output {
-  struct wl_output *     output;
-  std::string            name;
-  uint32_t               wl_name;
-  struct zxdg_output_v1 *xdg_output;
+  Glib::RefPtr<Gdk::Monitor> monitor;
+  std::string                name;
+
+  std::unique_ptr<struct zxdg_output_v1, decltype(&zxdg_output_v1_destroy)> xdg_output = {
+      nullptr, &zxdg_output_v1_destroy};
 };
 
 class Bar {
@@ -29,30 +32,34 @@ class Bar {
   auto toggle() -> void;
   void handleSignal(int);
 
-  struct waybar_output *        output;
-  Json::Value                   config;
-  Gtk::Window                   window;
-  struct wl_surface *           surface;
-  struct zwlr_layer_surface_v1 *layer_surface;
-  bool                          visible = true;
-  bool                          vertical = false;
+  struct waybar_output *output;
+  Json::Value           config;
+  Gtk::Window           window;
+  struct wl_surface *   surface;
+  bool                  visible = true;
+  bool                  vertical = false;
 
  private:
-  static inline const std::string MIN_HEIGHT_MSG =
+  static constexpr const char *MIN_HEIGHT_MSG =
       "Requested height: {} exceeds the minimum height: {} required by the modules";
-  static inline const std::string MIN_WIDTH_MSG =
+  static constexpr const char *MIN_WIDTH_MSG =
       "Requested width: {} exceeds the minimum width: {} required by the modules";
-  static inline const std::string BAR_SIZE_MSG =
+  static constexpr const char *BAR_SIZE_MSG =
       "Bar configured (width: {}, height: {}) for output: {}";
-  static inline const std::string SIZE_DEFINED =
+  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 *);
 
-  void destroyOutput();
+#ifdef HAVE_GTK_LAYER_SHELL
+  void initGtkLayerShell();
+#endif
   void onConfigure(GdkEventConfigure *ev);
-  void setMarginsAndZone(uint32_t height, uint32_t width);
+  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);
@@ -64,15 +71,19 @@ class Bar {
     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_;
   Gtk::Box                                      box_;
-  std::vector<std::unique_ptr<waybar::IModule>> modules_left_;
-  std::vector<std::unique_ptr<waybar::IModule>> modules_center_;
-  std::vector<std::unique_ptr<waybar::IModule>> modules_right_;
+  std::vector<std::unique_ptr<waybar::AModule>> modules_left_;
+  std::vector<std::unique_ptr<waybar::AModule>> modules_center_;
+  std::vector<std::unique_ptr<waybar::AModule>> modules_right_;
 };
 
 }  // namespace waybar

include/client.hpp

@@ -26,28 +26,25 @@ class Client {
 
  private:
   Client() = default;
-  void              setupConfigs(const std::string &config, const std::string &style);
-  void              bindInterfaces();
-  const std::string getValidPath(const std::vector<std::string> &paths);
+  std::tuple<const std::string, const std::string> getConfigs(const std::string &config,
+                                                              const std::string &style) const;
+  void                                             bindInterfaces();
+  const std::string getValidPath(const std::vector<std::string> &paths) const;
   void              handleOutput(std::unique_ptr<struct waybar_output> &output);
   bool isValidOutput(const Json::Value &config, std::unique_ptr<struct waybar_output> &output);
-  auto setupConfig() -> void;
-  auto setupCss() -> void;
-  std::unique_ptr<struct waybar_output>& getOutput(uint32_t wl_name);
+  auto setupConfig(const std::string &config_file) -> void;
+  auto setupCss(const std::string &css_file) -> void;
+  std::unique_ptr<struct waybar_output> &getOutput(void *);
   std::vector<Json::Value> getOutputConfigs(std::unique_ptr<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 handleLogicalPosition(void *, struct zxdg_output_v1 *, int32_t, int32_t);
-  static void handleLogicalSize(void *, struct zxdg_output_v1 *, int32_t, int32_t);
-  static void handleDone(void *, struct zxdg_output_v1 *);
-  static void handleName(void *, struct zxdg_output_v1 *, const char *);
-  static void handleDescription(void *, struct zxdg_output_v1 *, const char *);
+  static void handleOutputName(void *, struct zxdg_output_v1 *, const char *);
+  void        handleMonitorAdded(Glib::RefPtr<Gdk::Monitor> monitor);
+  void        handleMonitorRemoved(Glib::RefPtr<Gdk::Monitor> monitor);
 
   Json::Value                                        config_;
-  std::string                                        css_file_;
-  std::string                                        config_file_;
   Glib::RefPtr<Gtk::StyleContext>                    style_context_;
   Glib::RefPtr<Gtk::CssProvider>                     css_provider_;
   std::vector<std::unique_ptr<struct waybar_output>> outputs_;

include/factory.hpp

@@ -7,11 +7,14 @@
 #include "modules/sway/window.hpp"
 #include "modules/sway/workspaces.hpp"
 #endif
+#ifndef NO_FILESYSTEM
 #include "modules/battery.hpp"
+#endif
 #include "modules/cpu.hpp"
 #include "modules/idle_inhibitor.hpp"
 #include "modules/memory.hpp"
-#ifdef HAVE_DBUSMENU
+#include "modules/disk.hpp"
+#if defined(HAVE_DBUSMENU) && !defined(NO_FILESYSTEM)
 #include "modules/sni/tray.hpp"
 #endif
 #ifdef HAVE_LIBNL
@@ -35,7 +38,7 @@ namespace waybar {
 class Factory {
  public:
   Factory(const Bar& bar, const Json::Value& config);
-  IModule* makeModule(const std::string& name) const;
+  AModule* makeModule(const std::string& name) const;
 
  private:
   const Bar&         bar_;

include/modules/backlight.hpp

@@ -47,7 +47,6 @@ class Backlight : public ALabel {
   template <class ForwardIt, class Inserter>
   static void enumerate_devices(ForwardIt first, ForwardIt last, Inserter inserter, udev *udev);
 
-  const std::string    name_;
   const std::string    preferred_device_;
   static constexpr int EPOLL_MAX_EVENTS = 16;
 
@@ -57,6 +56,6 @@ class Backlight : public ALabel {
   std::mutex                udev_thread_mutex_;
   std::vector<BacklightDev> devices_;
   // thread must destruct before shared data
-  waybar::util::SleeperThread udev_thread_;
+  util::SleeperThread udev_thread_;
 };
 }  // namespace waybar::modules

include/modules/battery.hpp

@@ -9,7 +9,8 @@
 #include <sys/inotify.h>
 #include <algorithm>
 #include <fstream>
-#include <iostream>
+#include <string>
+#include <vector>
 #include "ALabel.hpp"
 #include "util/sleeper_thread.hpp"
 
@@ -30,18 +31,20 @@ class Battery : public ALabel {
  private:
   static inline const fs::path data_dir_ = "/sys/class/power_supply/";
 
-  void                                   getBatteries();
-  void                                   worker();
-  const std::string                      getAdapterStatus(uint8_t capacity) const;
-  const std::tuple<uint8_t, std::string> getInfos() const;
+  void                                          getBatteries();
+  void                                          worker();
+  const std::string                             getAdapterStatus(uint8_t capacity) const;
+  const std::tuple<uint8_t, float, std::string> getInfos() const;
+  const std::string                             formatTimeRemaining(float hoursRemaining);
 
-  util::SleeperThread   thread_;
-  util::SleeperThread   thread_timer_;
   std::vector<fs::path> batteries_;
   fs::path              adapter_;
   int                   fd_;
   std::vector<int>      wds_;
   std::string           old_status_;
+
+  util::SleeperThread   thread_;
+  util::SleeperThread   thread_timer_;
 };
 
 }  // namespace waybar::modules

include/modules/clock.hpp

@@ -1,8 +1,12 @@
 #pragma once
 
 #include <fmt/format.h>
+#if FMT_VERSION < 60000
+#include <fmt/time.h>
+#else
+#include <fmt/chrono.h>
+#endif
 #include "ALabel.hpp"
-#include "fmt/time.h"
 #include "util/sleeper_thread.hpp"
 
 namespace waybar::modules {
@@ -14,7 +18,7 @@ class Clock : public ALabel {
   auto update() -> void;
 
  private:
-  waybar::util::SleeperThread thread_;
+  util::SleeperThread thread_;
 };
 
 }  // namespace waybar::modules

include/modules/cpu.hpp

@@ -2,9 +2,11 @@
 
 #include <fmt/format.h>
 #include <sys/sysinfo.h>
+#include <cstdint>
 #include <fstream>
-#include <iostream>
 #include <numeric>
+#include <string>
+#include <utility>
 #include <vector>
 #include "ALabel.hpp"
 #include "util/sleeper_thread.hpp"
@@ -24,7 +26,8 @@ class Cpu : public ALabel {
   std::vector<std::tuple<size_t, size_t>> parseCpuinfo();
 
   std::vector<std::tuple<size_t, size_t>> prev_times_;
-  waybar::util::SleeperThread             thread_;
+
+  util::SleeperThread thread_;
 };
 
 }  // namespace waybar::modules

include/modules/custom.hpp

@@ -2,7 +2,7 @@
 
 #include <fmt/format.h>
 #include <csignal>
-#include <iostream>
+#include <string>
 #include "ALabel.hpp"
 #include "util/command.hpp"
 #include "util/json.hpp"
@@ -12,7 +12,7 @@ namespace waybar::modules {
 
 class Custom : public ALabel {
  public:
-  Custom(const std::string&, const Json::Value&);
+  Custom(const std::string&, const std::string&, const Json::Value&);
   ~Custom();
   auto update() -> void;
   void refresh(int /*signal*/);
@@ -22,18 +22,21 @@ class Custom : public ALabel {
   void continuousWorker();
   void parseOutputRaw();
   void parseOutputJson();
+  bool handleScroll(GdkEventScroll* e);
+  bool handleToggle(GdkEventButton* const& e);
 
-  const std::string           name_;
-  std::string                 text_;
-  std::string                 alt_;
-  std::string                 tooltip_;
-  std::vector<std::string>    class_;
-  int                         percentage_;
-  waybar::util::SleeperThread thread_;
-  waybar::util::command::res  output_;
-  waybar::util::JsonParser    parser_;
-  FILE*                       fp_;
-  int                         pid_;
+  const std::string        name_;
+  std::string              text_;
+  std::string              alt_;
+  std::string              tooltip_;
+  std::vector<std::string> class_;
+  int                      percentage_;
+  FILE*                    fp_;
+  int                      pid_;
+  util::command::res       output_;
+  util::JsonParser         parser_;
+
+  util::SleeperThread thread_;
 };
 
 }  // namespace waybar::modules

include/modules/disk.hpp

@@ -0,0 +1,23 @@
+#pragma once
+
+#include <fmt/format.h>
+#include <fstream>
+#include <sys/statvfs.h>
+#include "ALabel.hpp"
+#include "util/sleeper_thread.hpp"
+#include "util/format.hpp"
+
+namespace waybar::modules {
+
+class Disk : public ALabel {
+ public:
+  Disk(const std::string&, const Json::Value&);
+  ~Disk() = default;
+  auto update() -> void;
+
+ private:
+  util::SleeperThread thread_;
+  std::string path_;
+};
+
+}  // namespace waybar::modules

include/modules/memory.hpp

@@ -15,10 +15,12 @@ class Memory : public ALabel {
 
  private:
   static inline const std::string data_dir_ = "/proc/meminfo";
-  unsigned long                   memtotal_;
-  unsigned long                   memfree_;
   void                            parseMeminfo();
-  waybar::util::SleeperThread     thread_;
+
+  unsigned long memtotal_;
+  unsigned long memfree_;
+
+  util::SleeperThread thread_;
 };
 
 }  // namespace waybar::modules

include/modules/mpd.hpp

@@ -65,6 +65,9 @@ class MPD : public ALabel {
   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/network.hpp

@@ -27,30 +27,39 @@ class Network : public ALabel {
   static int handleEvents(struct nl_msg*, void*);
   static int handleScan(struct nl_msg*, void*);
 
-  void worker();
-  void disconnected();
-  void createInfoSocket();
-  void createEventSocket();
-  int  getExternalInterface();
-  void getInterfaceAddress();
-  int  netlinkRequest(void*, uint32_t, uint32_t groups = 0);
-  int  netlinkResponse(void*, uint32_t, uint32_t groups = 0);
-  void parseEssid(struct nlattr**);
-  void parseSignal(struct nlattr**);
-  bool associatedOrJoined(struct nlattr**);
-  auto getInfo() -> void;
+  void              worker();
+  void              createInfoSocket();
+  void              createEventSocket();
+  int               getExternalInterface(int skip_idx = -1) const;
+  void              getInterfaceAddress();
+  int               netlinkRequest(void*, uint32_t, uint32_t groups = 0) const;
+  int               netlinkResponse(void*, uint32_t, uint32_t groups = 0) const;
+  void              parseEssid(struct nlattr**);
+  void              parseSignal(struct nlattr**);
+  void              parseFreq(struct nlattr**);
+  bool              associatedOrJoined(struct nlattr**);
+  bool              checkInterface(struct ifinfomsg* rtif, std::string name);
+  int               getPreferredIface(int skip_idx = -1, bool wait = true) const;
+  auto              getInfo() -> void;
+  void              checkNewInterface(struct ifinfomsg* rtif);
+  const std::string getNetworkState() const;
+  void              clearIface();
+  bool              wildcardMatch(const std::string& pattern, const std::string& text) const;
 
-  waybar::util::SleeperThread thread_;
-  waybar::util::SleeperThread thread_timer_;
-  int                         ifid_;
-  sa_family_t                 family_;
-  struct sockaddr_nl          nladdr_ = {0};
-  struct nl_sock*             sk_ = nullptr;
-  struct nl_sock*             info_sock_ = nullptr;
-  int                         efd_;
-  int                         ev_fd_;
-  int                         nl80211_id_;
+  int                ifid_;
+  sa_family_t        family_;
+  struct sockaddr_nl nladdr_ = {0};
+  struct nl_sock*    sock_ = nullptr;
+  struct nl_sock*    ev_sock_ = nullptr;
+  int                efd_;
+  int                ev_fd_;
+  int                nl80211_id_;
+  std::mutex         mutex_;
 
+  unsigned long long bandwidth_down_total_;
+  unsigned long long bandwidth_up_total_;
+
+  std::string state_;
   std::string essid_;
   std::string ifname_;
   std::string ipaddr_;
@@ -58,6 +67,10 @@ class Network : public ALabel {
   int         cidr_;
   int32_t     signal_strength_dbm_;
   uint8_t     signal_strength_;
+  uint32_t    frequency_;
+
+  util::SleeperThread thread_;
+  util::SleeperThread thread_timer_;
 };
 
 }  // namespace waybar::modules

include/modules/pulseaudio.hpp

@@ -18,22 +18,30 @@ class Pulseaudio : public ALabel {
   static void subscribeCb(pa_context*, pa_subscription_event_type_t, uint32_t, void*);
   static void contextStateCb(pa_context*, void*);
   static void sinkInfoCb(pa_context*, const pa_sink_info*, int, void*);
+  static void sourceInfoCb(pa_context*, const pa_source_info* i, int, void* data);
   static void serverInfoCb(pa_context*, const pa_server_info*, void*);
   static void volumeModifyCb(pa_context*, int, void*);
-  bool        handleScroll(GdkEventScroll* e);
 
+  bool              handleScroll(GdkEventScroll* e);
   const std::string getPortIcon() const;
 
   pa_threaded_mainloop* mainloop_;
   pa_mainloop_api*      mainloop_api_;
   pa_context*           context_;
-  uint32_t              sink_idx_{0};
-  uint16_t              volume_;
-  pa_cvolume            pa_volume_;
-  bool                  muted_;
-  std::string           port_name_;
-  std::string           desc_;
-  bool                  scrolling_;
+  // SINK
+  uint32_t    sink_idx_{0};
+  uint16_t    volume_;
+  pa_cvolume  pa_volume_;
+  bool        muted_;
+  std::string port_name_;
+  std::string desc_;
+  std::string monitor_;
+  // SOURCE
+  uint32_t    source_idx_{0};
+  uint16_t    source_volume_;
+  bool        source_muted_;
+  std::string source_port_name_;
+  std::string source_desc_;
 };
 
 }  // namespace waybar::modules

include/modules/sni/item.hpp

@@ -46,7 +46,12 @@ class Item : public sigc::trackable {
   std::string                  menu;
   DbusmenuGtkMenu*             dbus_menu = nullptr;
   Gtk::Menu*                   gtk_menu = nullptr;
-  bool                         item_is_menu;
+  /**
+   * ItemIsMenu flag means that the item only supports the context menu.
+   * Default value is true because libappindicator supports neither ItemIsMenu nor Activate method
+   * while compliant SNI implementation would always reset the flag to desired value.
+   */
+  bool item_is_menu = true;
 
  private:
   void proxyReady(Glib::RefPtr<Gio::AsyncResult>& result);
@@ -59,12 +64,12 @@ class Item : public sigc::trackable {
   void                      updateImage();
   Glib::RefPtr<Gdk::Pixbuf> extractPixBuf(GVariant* variant);
   Glib::RefPtr<Gdk::Pixbuf> getIconByName(const std::string& name, int size);
-  static void               onMenuDestroyed(Item* self);
-  bool                      makeMenu(GdkEventButton* const& ev);
+  static void               onMenuDestroyed(Item* self, GObject* old_menu_pointer);
+  void                      makeMenu();
   bool                      handleClick(GdkEventButton* const& /*ev*/);
 
-  Glib::RefPtr<Gio::Cancellable> cancellable_;
   Glib::RefPtr<Gio::DBus::Proxy> proxy_;
+  Glib::RefPtr<Gio::Cancellable> cancellable_;
   bool                           update_pending_;
 };
 

include/modules/sni/tray.hpp

@@ -1,7 +1,7 @@
 #pragma once
 
 #include <fmt/format.h>
-#include "IModule.hpp"
+#include "AModule.hpp"
 #include "bar.hpp"
 #include "modules/sni/host.hpp"
 #include "modules/sni/watcher.hpp"
@@ -9,19 +9,17 @@
 
 namespace waybar::modules::SNI {
 
-class Tray : public IModule {
+class Tray : public AModule {
  public:
   Tray(const std::string&, const Bar&, const Json::Value&);
   ~Tray() = default;
   auto update() -> void;
-       operator Gtk::Widget&();
 
  private:
   void onAdd(std::unique_ptr<Item>& item);
   void onRemove(std::unique_ptr<Item>& item);
 
   static inline std::size_t nb_hosts_ = 0;
-  const Json::Value&        config_;
   Gtk::Box                  box_;
   SNI::Watcher              watcher_;
   SNI::Host                 host_;

include/modules/sni/watcher.hpp

@@ -8,7 +8,7 @@ namespace waybar::modules::SNI {
 
 class Watcher {
  public:
-  Watcher();
+  Watcher(std::size_t id);
   ~Watcher();
 
  private:

include/modules/sway/ipc/client.hpp

@@ -5,7 +5,6 @@
 #include <sys/un.h>
 #include <unistd.h>
 #include <cstring>
-#include <iostream>
 #include <memory>
 #include <mutex>
 #include "ipc.hpp"

include/modules/sway/mode.hpp

@@ -5,12 +5,12 @@
 #include "bar.hpp"
 #include "client.hpp"
 #include "modules/sway/ipc/client.hpp"
-#include "util/sleeper_thread.hpp"
 #include "util/json.hpp"
+#include "util/sleeper_thread.hpp"
 
 namespace waybar::modules::sway {
 
-class Mode : public ALabel {
+class Mode : public ALabel, public sigc::trackable {
  public:
   Mode(const std::string&, const Json::Value&);
   ~Mode() = default;
@@ -20,10 +20,12 @@ class Mode : public ALabel {
   void onEvent(const struct Ipc::ipc_response&);
   void worker();
 
-  waybar::util::SleeperThread thread_;
-  Ipc                         ipc_;
-  std::string                 mode_;
+  std::string      mode_;
   util::JsonParser parser_;
+  std::mutex       mutex_;
+
+  util::SleeperThread thread_;
+  Ipc                 ipc_;
 };
 
-}  // namespace waybar::modules::sway
+}  // namespace waybar::modules::sway

include/modules/sway/window.hpp

@@ -6,12 +6,12 @@
 #include "bar.hpp"
 #include "client.hpp"
 #include "modules/sway/ipc/client.hpp"
-#include "util/sleeper_thread.hpp"
 #include "util/json.hpp"
+#include "util/sleeper_thread.hpp"
 
 namespace waybar::modules::sway {
 
-class Window : public ALabel {
+class Window : public ALabel, public sigc::trackable {
  public:
   Window(const std::string&, const waybar::Bar&, const Json::Value&);
   ~Window() = default;
@@ -21,16 +21,21 @@ class Window : public ALabel {
   void                                                   onEvent(const struct Ipc::ipc_response&);
   void                                                   onCmd(const struct Ipc::ipc_response&);
   void                                                   worker();
-  std::tuple<std::size_t, int, std::string, std::string> getFocusedNode(const Json::Value& nodes);
+  std::tuple<std::size_t, int, std::string, std::string> getFocusedNode(const Json::Value& nodes,
+                                                                        std::string&       output);
   void                                                   getTree();
 
-  const Bar&                  bar_;
-  waybar::util::SleeperThread thread_;
-  Ipc                         ipc_;
-  std::string                 window_;
-  int                         windowId_;
-  std::string                 app_id_;
+  const Bar&       bar_;
+  std::string      window_;
+  int              windowId_;
+  std::string      app_id_;
+  std::string      old_app_id_;
+  std::size_t      app_nb_;
   util::JsonParser parser_;
+  std::mutex       mutex_;
+
+  util::SleeperThread thread_;
+  Ipc                 ipc_;
 };
 
 }  // namespace waybar::modules::sway

include/modules/sway/workspaces.hpp

@@ -3,21 +3,20 @@
 #include <fmt/format.h>
 #include <gtkmm/button.h>
 #include <gtkmm/label.h>
-#include "IModule.hpp"
+#include "AModule.hpp"
 #include "bar.hpp"
 #include "client.hpp"
 #include "modules/sway/ipc/client.hpp"
-#include "util/sleeper_thread.hpp"
 #include "util/json.hpp"
+#include "util/sleeper_thread.hpp"
 
 namespace waybar::modules::sway {
 
-class Workspaces : public IModule {
+class Workspaces : public AModule, public sigc::trackable {
  public:
   Workspaces(const std::string&, const waybar::Bar&, const Json::Value&);
   ~Workspaces() = default;
   auto update() -> void;
-       operator Gtk::Widget&();
 
  private:
   void              onCmd(const struct Ipc::ipc_response&);
@@ -27,21 +26,21 @@ class Workspaces : public IModule {
   Gtk::Button&      addButton(const Json::Value&);
   void              onButtonReady(const Json::Value&, Gtk::Button&);
   std::string       getIcon(const std::string&, const Json::Value&);
-  bool              handleScroll(GdkEventScroll*);
   const std::string getCycleWorkspace(std::vector<Json::Value>::iterator, bool prev) const;
   uint16_t          getWorkspaceIndex(const std::string& name) const;
   std::string       trimWorkspaceName(std::string);
+  bool              handleScroll(GdkEventScroll*);
 
   const Bar&                                   bar_;
-  const Json::Value&                           config_;
   std::vector<Json::Value>                     workspaces_;
-  waybar::util::SleeperThread                  thread_;
-  std::mutex                                   mutex_;
+  std::vector<std::string>                     workspaces_order_;
   Gtk::Box                                     box_;
-  Ipc                                          ipc_;
   util::JsonParser                             parser_;
-  bool                                         scrolling_;
   std::unordered_map<std::string, Gtk::Button> buttons_;
+  std::mutex                                   mutex_;
+
+  util::SleeperThread thread_;
+  Ipc                 ipc_;
 };
 
 }  // namespace waybar::modules::sway

include/modules/temperature.hpp

@@ -4,11 +4,6 @@
 #include <fstream>
 #include "ALabel.hpp"
 #include "util/sleeper_thread.hpp"
-#ifdef FILESYSTEM_EXPERIMENTAL
-#include <experimental/filesystem>
-#else
-#include <filesystem>
-#endif
 
 namespace waybar::modules {
 
@@ -22,8 +17,8 @@ class Temperature : public ALabel {
   std::tuple<uint16_t, uint16_t> getTemperature();
   bool                           isCritical(uint16_t);
 
-  std::string                 file_path_;
-  waybar::util::SleeperThread thread_;
+  std::string         file_path_;
+  util::SleeperThread thread_;
 };
 
-}  // namespace waybar::modules
+}  // namespace waybar::modules

include/util/command.hpp

@@ -33,7 +33,7 @@ inline int close(FILE* fp, pid_t pid) {
   fclose(fp);
   while (waitpid(pid, &stat, 0) == -1) {
     if (errno != EINTR) {
-      stat = -1;
+      stat = 0;
       break;
     }
   }
@@ -90,6 +90,8 @@ inline int32_t forkExec(std::string cmd) {
     setpgid(pid, pid);
     execl("/bin/sh", "sh", "-c", cmd.c_str(), (char*)0);
     exit(0);
+  } else {
+    signal(SIGCHLD,SIG_IGN);
   }
 
   return pid;

include/util/format.hpp

@@ -0,0 +1,84 @@
+#pragma once
+
+#include <fmt/format.h>
+
+class pow_format {
+  public:
+    pow_format(long long val, std::string&& unit, bool binary = false):
+      val_(val), unit_(unit), binary_(binary) { };
+
+    long long val_;
+    std::string unit_;
+    bool binary_;
+};
+
+
+namespace fmt {
+  template <>
+    struct formatter<pow_format> {
+      char spec = 0;
+      int width = 0;
+
+      template <typename ParseContext>
+        constexpr auto parse(ParseContext& ctx) -> decltype (ctx.begin()) {
+          auto it = ctx.begin(), end = ctx.end();
+          if (it != end && *it == ':') ++it;
+          if (*it == '>' || *it == '<' || *it == '=') {
+            spec = *it;
+            ++it;
+          }
+          if (it == end || *it == '}') return it;
+          if ('0' <= *it && *it <= '9') {
+            // We ignore it for now, but keep it for compatibility with
+            // existing configs where the format for pow_format'ed numbers was
+            // 'string' and specifications such as {:>9} were valid.
+            // The rationale for ignoring it is that the only reason to specify
+            // an alignment and a with is to get a fixed width bar, and ">" is
+            // sufficient in this implementation.
+            width = parse_nonnegative_int(it, end, ctx);
+          }
+          return it;
+        }
+
+      template<class FormatContext>
+        auto format(const pow_format& s, FormatContext &ctx) -> decltype (ctx.out()) {
+          const char* units[] = { "", "k",  "M",  "G",  "T",  "P",  nullptr};
+
+          auto base = s.binary_ ? 1024ull : 1000ll;
+          auto fraction = (double) s.val_;
+
+          int pow;
+          for (pow = 0; units[pow+1] != nullptr && fraction / base >= 1; ++pow) {
+            fraction /= base;
+          }
+
+          auto max_width = 4                  // coeff in {:.3g} format
+                         + 1                  // prefix from units array
+                         + s.binary_          // for the 'i' in GiB.
+                         + s.unit_.length();
+
+          const char * format;
+          std::string string;
+          switch (spec) {
+            case '>':
+              return format_to(ctx.out(), "{:>{}}", fmt::format("{}", s), max_width);
+            case '<':
+              return format_to(ctx.out(), "{:<{}}", fmt::format("{}", s), max_width);
+            case '=':
+              format = "{coefficient:<4.3g}{padding}{prefix}{unit}";
+              break;
+            case 0:
+            default:
+              format = "{coefficient:.3g}{prefix}{unit}";
+              break;
+          }
+          return format_to(ctx.out(), format
+              , fmt::arg("coefficient", fraction)
+              , fmt::arg("prefix", std::string() + units[pow] + ((s.binary_ && pow) ? "i" : ""))
+              , fmt::arg("unit", s.unit_)
+              , fmt::arg("padding", pow ? "" : s.binary_ ? "  " : " ")
+            );
+        }
+    };
+}
+

include/util/json.hpp

@@ -5,15 +5,16 @@
 namespace waybar::util {
 
 struct JsonParser {
-  JsonParser() : reader_(builder_.newCharReader()) {}
+  JsonParser() {}
 
   const Json::Value parse(const std::string& data) const {
     Json::Value root(Json::objectValue);
     if (data.empty()) {
       return root;
     }
-    std::string err;
-    bool res = reader_->parse(data.c_str(), data.c_str() + data.size(), &root, &err);
+    std::unique_ptr<Json::CharReader> const reader(builder_.newCharReader());
+    std::string                             err;
+    bool res = reader->parse(data.c_str(), data.c_str() + data.size(), &root, &err);
     if (!res) throw std::runtime_error(err);
     return root;
   }
@@ -21,8 +22,7 @@ struct JsonParser {
   ~JsonParser() = default;
 
  private:
-  Json::CharReaderBuilder                 builder_;
-  std::unique_ptr<Json::CharReader> const reader_;
+  Json::CharReaderBuilder builder_;
 };
 
 }  // namespace waybar::util

include/util/sleeper_thread.hpp

@@ -14,7 +14,10 @@ class SleeperThread {
 
   SleeperThread(std::function<void()> func)
       : thread_{[this, func] {
-          while (do_run_) func();
+          while (do_run_) {
+            signal_ = false;
+            func();
+          }
         }} {}
 
   SleeperThread& operator=(std::function<void()> func) {
@@ -42,7 +45,10 @@ class SleeperThread {
   }
 
   auto wake_up() {
-    signal_ = true;
+    {
+      std::lock_guard<std::mutex> lck(mutex_);
+      signal_ = true;
+    }
     condvar_.notify_all();
   }
 

man/waybar-backlight.5.scd

@@ -0,0 +1,67 @@
+waybar-backlight(5)
+
+# NAME
+
+waybar - backlight module
+
+# DESCRIPTION
+
+The *backlight* module displays the current backlight level.
+
+# CONFIGURATION
+
+*interval* ++
+	typeof: integer ++
+	default: 2 ++
+	The interval in which information gets polled.
+
+*format* ++
+	typeof: string ++
+	default: {percent}% ++
+	The format, how information should be displayed. On {} data gets inserted.
+
+*max-length* ++
+	typeof: integer ++
+	The maximum length in characters the module should display.
+
+*rotate* ++
+	typeof: integer ++
+	Positive value to rotate the text label.
+
+*states* ++
+	typeof: array ++
+	A number of backlight states which get activated on certain brightness levels.
+
+*on-click* ++
+	typeof: string ++
+	Command to execute when the module is clicked.
+
+*on-click-right* ++
+	typeof: string ++
+	Command to execute when the module is right clicked.
+
+*on-scroll-up* ++
+	typeof: string ++
+	Command to execute when performing a scroll up on the module.
+
+*on-scroll-down* ++
+	typeof: string
+	Command to execute when performing a scroll down on the module.
+
+*smooth-scrolling-threshold* ++
+	typeof: double
+	Threshold to be used when scrolling.
+
+# EXAMPLE:
+
+```
+"backlight": {
+    "device": "intel_backlight",
+    "format": "{percent}% {icon}",
+    "format-icons": ["", ""]
+}
+```
+
+# STYLE
+
+- *#backlight*

man/waybar-battery.5.scd

@@ -0,0 +1,136 @@
+waybar-battery(5)
+
+# NAME
+
+waybar - battery module
+
+# DESCRIPTION
+
+The *battery* module displays the current capacity and state (eg. charging) of your battery.
+
+# CONFIGURATION
+
+*bat* ++
+	typeof: string ++
+	The battery to monitor, as in /sys/class/power_supply/ instead of auto detect.
+
+*adapter* ++
+	typeof: string ++
+	The adapter to monitor, as in /sys/class/power_supply/ instead of auto detect.
+
+*interval* ++
+	typeof: integer ++
+	default: 60 ++
+	The interval in which the information gets polled.
+
+*states* ++
+	typeof: array ++
+	A number of battery states which get activated on certain capacity levels. See *waybar-states(5)*.
+
+*format* ++
+	typeof: string ++
+	default: {capacity}% ++
+	The format, how the time should be displayed.
+
+*format-time* ++
+	typeof: string ++
+	default: {H} h {M} min ++
+	The format, how the time should be displayed.
+
+*format-icons*
+	typeof: array/object
+	Based on the current capacity, the corresponding icon gets selected. ++
+	The order is *low* to *high*. Or by the state if it is an object.
+
+*max-length* ++
+	typeof: integer++
+	The maximum length in character the module should display.
+
+*rotate* ++
+	typeof: integer++
+	Positive value to rotate the text label.
+
+*on-click* ++
+	typeof: string ++
+	Command to execute when clicked on the module.
+
+*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.
+
+# FORMAT REPLACEMENTS
+
+*{capacity}*: Capacity in percentage
+
+*{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.
+
+# TIME FORMAT
+
+The *battery* module allows you to define how time should be formatted via *format-time*.
+
+The two arguments are:
+*{H}*: Hours
+*{M}*: Minutes
+
+# CUSTOM FORMATS
+
+The *battery* module allows to define custom formats based on up to two factors. The best fitting format will be selected.
+
+*format-<state>*: With *states*, a custom format can be set depending on the capacity of your battery.
+
+*format-<status>*: With the status, a custom format can be set depending on the status in /sys/class/power_supply/<bat>/status (in lowercase).
+
+*format-<status>-<state>*: You can also set a custom format depending on both values.
+
+# STATES
+
+- Every entry (*state*) consists of a *<name>* (typeof: *string*) and a *<value>* (typeof: *integer*).
+	- The state can be addressed as a CSS class in the *style.css*. The name of the CSS class is the *<name>* of the state.	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>*. Or if you want to differentiate a bit more even as *format-<status>-<state>*. For more information see *custom-formats*.
+
+
+
+# EXAMPLES
+
+```
+"battery": {
+    "bat": "BAT2",
+    "interval": 60,
+    "states": {
+        "warning": 30,
+        "critical": 15
+    },
+    "format": "{capacity}% {icon}",
+    "format-icons": ["", "", "", "", ""],
+    "max-length": 25
+}
+```
+
+# STYLE
+
+- *#battery*
+- *#battery.<status>*
+	- *<status>* is the value of /sys/class/power_supply/<bat>/status in lowercase.
+- *#battery.<state>*
+	- *<state>* can be defined in the *config*. For more information see *states*.
+- *#battery.<status>.<state>*
+	- Combination of both *<status>* and *<state>*.

man/waybar-clock.5.scd

@@ -0,0 +1,65 @@
+waybar-clock(5)
+
+# NAME
+
+waybar - clock module
+
+# DESCRIPTION
+
+The *clock* module displays the current date and time.
+
+# CONFIGURATION
+
+*interval*: ++
+	typeof: integer ++
+	default: 60 ++
+	The interval in which the information gets polled.
+
+*format*: ++
+	typeof: string ++
+	default: {:%H:%M} ++
+	The format, how the date and time should be displayed.
+
+*max-length*: ++
+	typeof: integer ++
+	The maximum length in character the module should display.
+
+*rotate*: ++
+	typeof: integer ++
+	Positive value to rotate the text label.
+
+*on-click*: ++
+	typeof: string ++
+	Command to execute when clicked on the module.
+
+*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.
+
+View all valid format options in *strftime(3)*.
+
+# EXAMPLES
+
+```
+"clock": {
+    "interval": 60,
+    "format": "{:%H:%M}",
+    "max-length": 25
+}
+```
+
+# STYLE
+
+- *#clock*

man/waybar-cpu.5.scd

@@ -0,0 +1,78 @@
+waybar-cpu(5)
+
+# NAME
+
+waybar - cpu module
+
+# DESCRIPTION
+
+The *cpu* module displays the current cpu utilization.
+
+# CONFIGURATION
+
+*interval*: ++
+	typeof: integer ++
+	default: 10 ++
+	The interval in which the information gets polled.
+
+*format*: ++
+	typeof: string  ++
+	default: {usage}% ++
+	The format, how information should be displayed. On {} data gets inserted.
+
+*max-length*: ++
+	typeof: integer ++
+	The maximum length in character the module should display.
+
+*rotate*: ++
+	typeof: integer ++
+	Positive value to rotate the text label.
+
+*states*: ++
+	typeof: array ++
+	A number of cpu usage states which get activated on certain usage levels. See *waybar-states(5)*.
+
+*on-click*: ++
+	typeof: string  ++
+	Command to execute when clicked on the module.
+
+*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.
+
+# FORMAT REPLACEMENTS
+
+*{load}*: Current cpu load.
+
+*{usage}*: Current cpu usage.
+
+# EXAMPLE
+
+```
+"cpu": {
+	"interval": 10,
+	"format": "{}% ",
+	"max-length": 10
+}
+```
+
+# STYLE
+
+- *#cpu*

man/waybar-custom.5.scd

@@ -0,0 +1,190 @@
+waybar-custom(5)
+
+# NAME
+
+waybar - custom module
+
+# DESCRIPTION
+
+The *custom* module displays either the output of a script or static text.
+To display static text, specify only the *format* field.
+
+# CONFIGURATION
+
+Addressed by *custom/<name>*
+
+*exec*: ++
+	typeof: string ++
+	The path to the script, which should be executed.
+
+*exec-if*: ++
+	typeof: string ++
+	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.
+
+*return-type*: ++
+	typeof: string ++
+	See *return-type*
+
+*interval*: ++
+	typeof: integer ++
+	The interval (in seconds) in which the information gets polled.
+	Use *once* if you want to execute the module only on startup.
+	You can update it manually with a signal. If no *interval* is defined,
+	it is assumed that the out script loops it self.
+
+*signal*: ++
+	typeof: integer ++
+	The signal number used to update the module.
+	The number is valid between 1 and N, where *SIGRTMIN+N* = *SIGRTMAX*.
+
+*format*: ++
+	typeof: string ++
+	default: {} ++
+	The format, how information should be displayed. On {} data gets inserted.
+
+*format-icons*: ++
+	typeof: array ++
+	Based on the set percentage, the corresponding icon gets selected. The order is *low* to *high*.
+
+*rotate*: ++
+	typeof: integer ++
+	Positive value to rotate the text label.
+
+*max-length*: ++
+	typeof: integer ++
+	The maximum length in character the module should display.
+
+*on-click*: ++
+	typeof: string ++
+	Command to execute when clicked on the module.
+
+*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.
+
+*escape*: ++
+	typeof: bool ++
+	default: false ++
+	Option to enable escaping of script output.
+
+# RETURN-TYPE
+
+When *return-type* is set to *json*, Waybar expects the *exec*-script  to output its data in JSON format.
+This should look like this:
+
+```
+{"text": "$text", "tooltip": "$tooltip", "class": "$class", "percentage": $percentage }
+```
+
+The *class* parameter also accepts an array of strings.
+
+If nothing or an invalid option is specified, Waybar expects i3blocks style output. Values are *newline* separated.
+This should look like this:
+
+```
+$text\\n$tooltip\\n$class*
+```
+
+*class* is a CSS class, to apply different styles in *style.css*
+
+# FORMAT REPLACEMENTS
+
+*{}*: Output of the script.
+
+*{percentage}* Percentage which can be set via a json return-type.
+
+*{icon}*: An icon from 'format-icons' according to percentage.
+
+# EXAMPLES
+
+## Spotify:
+
+```
+"custom/spotify": {
+	"format": " {}",
+	"max-length": 40,
+	"interval": 30, // Remove this if your script is endless and write in loop
+	"exec": "$HOME/.config/waybar/mediaplayer.sh 2> /dev/null", // Script in resources folder
+	"exec-if": "pgrep spotify"
+}
+```
+
+## mpd:
+
+```
+"custom/mpd": {
+	"format": "♪ {}",
+	//"max-length": 15,
+	"interval": 10,
+	"exec": "mpc current",
+	"exec-if": "pgrep mpd",
+	"on-click": "mpc toggle",
+	"on-click-right": "sonata"
+}
+```
+
+## cmus:
+
+```
+"custom/cmus": {
+	"format": "♪ {}",
+	//"max-length": 15,
+	"interval": 10,
+	"exec": "cmus-remote -C \"format_print '%a - %t'\"", // artist - title
+	"exec-if": "pgrep cmus",
+	"on-click": "cmus-remote -u",                        //toggle pause
+	"escape": true                                       //handle markup entities
+}
+```
+
+## Pacman
+
+```
+
+"custom/pacman": {
+	"format": "{}  ",
+	"interval": "once",
+	"exec": "pacman_packages",
+	"on-click": "update-system",
+	"signal": 8
+}
+```
+
+## Alternate Pacman
+
+```
+"custom/pacman": {
+	"format": "{}  ",
+	"interval": 3600,                     // every hour
+	"exec": "checkupdates | wc -l",       // # of updates
+	"exec-if": "exit 0",                  // always run; consider advanced run conditions
+	"on-click": "termite -e 'sudo pacman -Syu'; pkill -SIGRTMIN+8 waybar", // update system
+	"signal": 8
+}
+```
+
+You can use the signal and update the number of available packages with *pkill -RTMIN+8 waybar*.
+
+# STYLE
+
+- *#custom-<name>*
+- *#custom-<name>.<class>*
+- *<class>* can be set by the script. For more information see *return-type*

man/waybar-disk.5.scd

@@ -0,0 +1,93 @@
+waybar-disk(5)
+
+# NAME
+
+waybar - disk module
+
+# DESCRIPTION
+
+The *disk* module displays the current disk space used.
+
+# CONFIGURATION
+
+Addressed by *disk*
+
+*path*: ++
+	typeof: string ++
+	default: "/" ++
+	Any path residing in the filesystem or mountpoint for which the information should be displayed.
+
+*interval*: ++
+	typeof: integer++
+	default: 30 ++
+	The interval in which the information gets polled.
+
+*format*: ++
+	typeof: string ++
+	default: "{percentage_used}%" ++
+	The format, 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.
+
+*on-click*: ++
+	typeof: string ++
+	Command to execute when clicked on the module.
+
+*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 ++
+	default: "{used} out of {total} used ({percentage_used}%)" ++
+	The format of the information displayed in the tooltip.
+
+# FORMAT REPLACEMENTS
+
+*{percentage_used}*: Percentage of disk in use.
+
+*{percentage_free}*: Percentage of free disk space
+
+*{total}*: Total amount of space on the disk, partition or mountpoint.
+
+*{used}*: Amount of used disk space.
+
+*{free}*: Amount of available disk space for normal users.
+
+*{path}*: The path specified in the configuration.
+
+# EXAMPLES
+
+```
+"disk": {
+	"interval": 30,
+	"format": "{percentage_free}% free on {path}",
+}
+```
+
+# STYLE
+
+- *#disk*

man/waybar-idle-inhibitor.5.scd

@@ -0,0 +1,71 @@
+waybar-idle-inhibitor(5)
+
+# NAME
+
+waybar - idle_inhibitor module
+
+# DESCRIPTION
+
+The *idle_inhibitor* module can inhibiting the idle behavior such as screen blanking, locking, and
+screensaving, also known as "presentation mode".
+
+# CONFIGURATION
+
+*format*: ++
+	typeof: string ++
+	The format, how the state should be displayed.
+
+*format-icons*: ++
+	typeof: array ++
+	Based on the current state, the corresponding icon gets selected.
+
+*rotate*: ++
+	typeof: integer ++
+	Positive value to rotate the text label.
+
+*max-length*: ++
+	typeof: integer ++
+	The maximum length in character the module should display.
+
+*on-click*: ++
+	typeof: string ++
+	Command to execute when clicked on the module. A click also toggles the state
+
+*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.
+
+# FORMAT REPLACEMENTS
+
+*{status}*: status (*activated* or *deactivated*)
+
+*{icon}*: Icon, as defined in *format-icons*
+
+# EXAMPLES
+
+```
+"idle_inhibitor": {
+	"format": "{icon}",
+	"format-icons": {
+	    "activated": "",
+	    "deactivated": ""
+	}
+}
+```

man/waybar-memory.5.scd

@@ -0,0 +1,93 @@
+waybar-memory(5)
+
+# NAME
+
+waybar - memory module
+
+# DESCRIPTION
+
+The *memory* module displays the current memory utilization.
+
+# CONFIGURATION
+
+Addressed by *memory*
+
+*interval*: ++
+	typeof: integer++
+	default: 30 ++
+	The interval in which the information gets polled.
+
+*format*: ++
+	typeof: string ++
+	default: {percentage}% ++
+	The format, how information should be displayed.
+
+*rotate*: ++
+	typeof: integer ++
+	Positive value to rotate the text label.
+
+*states*: ++
+	typeof: array ++
+	A number of memory utilization states which get activated on certain percentage thresholds. See *waybar-states(5)*.
+
+*max-length*: ++
+	typeof: integer ++
+	The maximum length in character the module should display.
+
+*on-click*: ++
+	typeof: string ++
+	Command to execute when clicked on the module.
+
+*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.
+
+# FORMAT REPLACEMENTS
+
+*{percentage}*: Percentage of memory in use.
+
+*{total}*: Amount of total memory available in GiB.
+
+*{used}*: Amount of used memory in GiB.
+
+*{avail}*: Amount of available memory in GiB.
+
+# EXAMPLES
+
+```
+"memory": {
+	"interval": 30,
+	"format": "{}% ",
+	"max-length": 10
+}
+```
+
+## FORMATTED MEMORY VALUES
+
+```
+"memory": {
+	"interval": 30,
+	"format": "{used:0.1f}G/{total:0.1f}G "
+}
+```
+
+# STYLE
+
+- *#memory*

man/waybar-mpd.5.scd

@@ -0,0 +1,200 @@
+waybar-mpd(5)
+
+# NAME
+
+waybar - mpd module
+
+# DESCRIPTION
+
+The *mpd* module displays information about a running "Music Player Daemon" instance.
+
+# CONFIGURATION
+
+Addressed by *mpd*
+
+*server*: ++
+    typeof: string ++
+    The network address or Unix socket path of the MPD server. If empty, connect to the default host.
+
+*port*: ++
+    typeof: integer ++
+    The port MPD listens to. If empty, use the default port.
+
+*interval*: ++
+    typeof: integer++
+    default: 5 ++
+    The interval in which the connection to the MPD server is retried
+
+*timeout*: ++
+    typeof: integer++
+    default: 30 ++
+    The timeout for the connection. Change this if your MPD server has a low `connection_timeout` setting
+
+*unknown-tag*: ++
+    typeof: string ++
+    default: "N/A" ++
+    The text to display when a tag is not present in the current song, but used in `format`
+
+*format*: ++
+    typeof: string ++
+    default: "{album} - {artist} - {title}" ++
+    Information displayed when a song is playing or paused
+
+*format-stopped*: ++
+    typeof: string ++
+    default: "stopped" ++
+    Information displayed when the player is stopped.
+
+*format-disconnected*: ++
+    typeof: string ++
+    default: "disconnected" ++
+    Information displayed when the MPD server can't be reached.
+
+*tooltip*: ++
+    typeof: bool ++
+    default: true ++
+    Option to disable tooltip on hover.
+
+*tooltip-format*: ++
+    typeof: string ++
+    default: "MPD (connected)" ++
+    Tooltip information displayed when connected to MPD.
+
+*tooltip-format-disconnected*: ++
+    typeof: string ++
+    default: "MPD (disconnected)" ++
+    Tooltip information displayed when the MPD server can't be reached.
+
+*rotate*: ++
+    typeof: integer ++
+    Positive value to rotate the text label.
+
+*max-length*: ++
+    typeof: integer ++
+    The maximum length in character the module should display.
+
+*on-click*: ++
+    typeof: string ++
+    Command to execute when clicked on the module.
+
+*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.
+
+*state-icons*: ++
+    typeof: object ++
+    default: {} ++
+    Icon to show depending on the play/pause state of the player (*{ "playing": "...", "paused": "..." }*)
+
+*consume-icons*: ++
+    typeof: object ++
+    default: {} ++
+    Icon to show depending on the "consume" option (*{ "on": "...", "off": "..." }*)
+
+*random-icons*: ++
+    typeof: object ++
+    default: {} ++
+    Icon to show depending on the "random" option (*{ "on": "...", "off": "..." }*)
+
+*repeat-icons*: ++
+    typeof: object ++
+    default: {} ++
+    Icon to show depending on the "repeat" option (*{ "on": "...", "off": "..." }*)
+
+*single-icons*: ++
+    typeof: object ++
+    default: {} ++
+    Icon to show depending on the "single" option (*{ "on": "...", "off": "..." }*)
+
+# FORMAT REPLACEMENTS
+
+## WHEN PLAYING/PAUSED
+
+*{artist}*: The artist of the current song
+
+*{albumArtist}*: The artist of the current album
+
+*{album}*: The album of the current song
+
+*{title}*: The title of the current song
+
+*{date}*: The date of the current song
+
+*{elapsedTime}*: The current position of the current song. To format as a date/time (see example configuration)
+
+*{totalTime}*: The length of the current song. To format as a date/time (see example configuration)
+
+*{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)
+
+*{randomIcon}*: The icon corresponding the "random" option (see *random-icons* option)
+
+*{repeatIcon}*: The icon corresponding the "repeat" option (see *repeat-icons* option)
+
+*{singleIcon}*: The icon corresponding the "single" option (see *single-icons* option)
+
+
+## WHEN STOPPED
+
+*{consumeIcon}*: The icon corresponding the "consume" option (see *consume-icons* option)
+
+*{randomIcon}*: The icon corresponding the "random" option (see *random-icons* option)
+
+*{repeatIcon}*: The icon corresponding the "repeat" option (see *repeat-icons* option)
+
+*{singleIcon}*: The icon corresponding the "single" option (see *single-icons* option)
+
+## WHEN DISCONNECTED
+
+Currently, no format replacements when disconnected.
+
+# EXAMPLES
+
+```
+"mpd": {
+	"format": "{stateIcon} {consumeIcon}{randomIcon}{repeatIcon}{singleIcon}{artist} - {album} - {title} ({elapsedTime:%M:%S}/{totalTime:%M:%S}) ",
+	"format-disconnected": "Disconnected ",
+	"format-stopped": "{consumeIcon}{randomIcon}{repeatIcon}{singleIcon}Stopped ",
+	"interval": 2,
+	"consume-icons": {
+		"on": " " // Icon shows only when "consume" is on
+	},
+	"random-icons": {
+		"off": "<span color=\"#f53c3c\"></span> ", // Icon grayed out when "random" is off
+		"on": " "
+	},
+	"repeat-icons": {
+		"on": " "
+	},
+	"single-icons": {
+		"on": "1 "
+	},
+	"state-icons": {
+		"paused": "",
+		"playing": ""
+	},
+	"tooltip-format": "MPD (connected)",
+	"tooltip-format-disconnected": "MPD (disconnected)"
+}
+```
+
+# STYLE
+
+- *#mpd*
+- *#mpd.disconnected*
+- *#mpd.stopped*
+- *#mpd.playing*
+- *#mpd.paused*

man/waybar-network.5.scd

@@ -0,0 +1,143 @@
+waybar-network(5)
+
+# NAME
+
+waybar - network module
+
+# DESCRIPTION
+
+The *network* module displays information about the current network connections.
+
+# CONFIGURATION
+
+Addressed by *network*
+
+*interface*: ++
+	typeof: string ++
+	Use the defined interface instead of auto detection. Accepts wildcard.
+
+*interval*: ++
+	typeof: integer ++
+	default: 60 ++
+	The interval in which the network information gets polled (e.g. signal strength).
+
+*format*: ++
+	typeof: string  ++
+	default: *{ifname}* ++
+	The format, how information should be displayed. This format is used when other formats aren't specified.
+
+*format-ethernet*: ++
+	typeof: string ++
+	This format is used when a ethernet interface is displayed.
+
+*format-wifi*: ++
+	typeof: string ++
+	This format is used when a wireless interface is displayed.
+
+*format-linked*: ++
+	typeof: string ++
+	This format is used when a linked interface with no ip address is displayed.
+
+*format-disconnected*: ++
+	typeof: string ++
+	This format is used when the displayed interface is disconnected.
+
+*rotate*: ++
+	typeof: integer ++
+	Positive value to rotate the text label.
+
+*max-length*: ++
+	typeof: integer ++
+	The maximum length in character the module should display.
+
+*on-click*: ++
+	typeof: string ++
+	Command to execute when clicked on the module.
+
+*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.
+
+*tooltip-format-ethernet*: ++
+	typeof: string ++
+	This format is used when a ethernet interface is displayed.
+
+*tooltip-format-wifi*: ++
+	typeof: string ++
+	This format is used when a wireless interface is displayed.
+
+*tooltip-format-disconnected*: ++
+	typeof: string ++
+	This format is used when the displayed interface is disconnected.
+
+# FORMAT REPLACEMENTS
+
+*{ifname}*: Name of the network interface.
+
+*{ipaddr}*: The first IP of the interface.
+
+*{netmask}*: The subnetmask corresponding to the IP.
+
+*{cidr}*: The subnetmask corresponding to the IP in CIDR notation.
+
+*{essid}*: Name (SSID) of the wireless network.
+
+*{signalStrength}*: Signal strength of the wireless network.
+
+*{signaldBm}*: Signal strength of the wireless network in dBm.
+
+*{frequency}*: Frequency of the wireless network in MHz.
+
+*{bandwidthUpBits}*: Instant up speed in bits/seconds.
+
+*{bandwidthDownBits}*: Instant down speed in bits/seconds.
+
+*{bandwidthUpOctets}*: Instant up speed in octets/seconds.
+
+*{bandwidthDownOctets}*: Instant down speed in octets/seconds.
+
+# EXAMPLES
+
+```
+"network": {
+	"interface": "wlp2s0",
+	"format": "{ifname}",
+	"format-wifi": "{essid} ({signalStrength}%) ",
+	"format-ethernet": "{ifname} ",
+	"format-disconnected": "", //An empty format will hide the module.
+	"tooltip-format": "{ifname}",
+	"tooltip-format-wifi": "{essid} ({signalStrength}%) ",
+	"tooltip-format-ethernet": "{ifname} ",
+	"tooltip-format-disconnected": "Disconnected",
+	"max-length": 50
+}
+```
+
+# STYLE
+
+- *#network*
+- *#network.disconnected*
+- *#network.linked*
+- *#network.ethernet*
+- *#network.wifi*

man/waybar-pulseaudio.5.scd

@@ -0,0 +1,134 @@
+waybar-pulseaudio(5)
+
+# NAME
+
+waybar - pulseaudio module
+
+# DESCRIPTION
+
+The *pulseaudio* module displays the current volume reported by PulseAudio.
+
+Additionally you can control the volume by scrolling *up* or *down* while the cursor is over the module.
+
+# CONFIGURATION
+
+*format*: ++
+	typeof: string  ++
+	default: {volume}% ++
+	The format, how information should be displayed. This format is used when other formats aren't specified.
+
+*format-bluetooth*: ++
+	typeof: string ++
+	This format is used when using bluetooth speakers.
+
+*format-muted*: ++
+	typeof: string ++
+	This format is used when the sound is muted.
+
+*format-source*: ++
+	typeof: string ++
+	default: {volume}% ++
+	This format used for the source.
+
+*format-source-muted*: ++
+	typeof: string ++
+	This format is used when the source is muted.
+
+*format-icons*: ++
+	typeof: array ++
+	Based on the current port-name and volume, the corresponding icon gets selected. The order is *low* to *high*. See *Icons*.
+
+*rotate*: ++
+	typeof: integer ++
+	Positive value to rotate the text label.
+
+*states*: ++
+	typeof: array ++
+	A number of volume states which get activated on certain volume levels. See *waybar-states(5)*
+
+*max-length*: ++
+	typeof: integer ++
+	The maximum length in character the module should display.
+
+*scroll-step*: ++
+	typeof: float ++
+	default: 1.0 ++
+	The speed in which to change the volume when scrolling.
+
+*on-click*: ++
+	typeof: string ++
+	Command to execute when clicked on the module.
+
+*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. 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.
+
+*tooltip*: ++
+	typeof: bool ++
+	default: true ++
+	Option to disable tooltip on hover.
+
+# FORMAT REPLACEMENTS
+
+*{desc}*: Pulseaudio port's description, for bluetooth it'll be the device name.
+
+*{volume}*: Volume in percentage.
+
+*{icon}*: Icon, as defined in *format-icons*.
+
+*{format_source}*: Source format, *format-source*, *format-source-muted*.
+
+# ICONS:
+
+The following strings for *format-icons* are supported.
+If they are found in the current PulseAudio port name, the corresponding icons will be selected.
+
+- *default* (Shown, when no other port is found)
+- *headphones*
+- *speaker*
+- *hdmi*
+- *headset*
+- *handsfree*
+- *portable*
+- *car*
+- *hifi*
+- *phone*
+
+# EXAMPLES
+
+```
+"pulseaudio": {
+	"format": "{volume}% {icon}",
+	"format-bluetooth": "{volume}% {icon}",
+	"format-muted": "",
+	"format-icons": {
+		"headphones": "",
+		"handsfree": "",
+		"headset": "",
+		"phone": "",
+		"portable": "",
+		"car": "",
+		"default": ["", ""]
+	},
+	"scroll-step": 1,
+	"on-click": "pavucontrol"
+}
+```
+
+# STYLE
+
+- *#pulseaudio*
+- *#pulseaudio.bluetooth*
+- *#pulseaudio.muted*

man/waybar-states.5.scd

@@ -0,0 +1,43 @@
+waybar-states(5)
+
+# OVERVIEW
+
+Some modules support 'states' which allows percentage values to be used as styling triggers to
+apply a class when the value matches the declared state value.
+
+# STATES
+
+- Every entry (*state*) consists of a *<name>* (typeof: *string*) and a *<value>* (typeof: *integer*).
+
+	- The state can be addressed as a CSS class in the *style.css*. The name of the CSS class is the *<name>* of the state.
+	  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>*.
+	  Or if you want to differentiate a bit more even as *format-<status>-<state>*.
+
+# EXAMPLE
+
+```
+"battery": {
+	"bat": "BAT2",
+	"interval": 60,
+	"states": {
+		"warning": 30,
+		"critical": 15
+	},
+	"format": "{capacity}% {icon}",
+	"format-icons": ["", "", "", "", ""],
+	"max-length": 25
+}
+```
+
+# STYLING STATES
+
+- *#battery.<state>*
+  - *<state>* can be defined in the *config*.
+
+# EXAMPLE:
+
+- *#battery.warning: { background: orange; }*
+- *#battery.critical: { background: red; }*

man/waybar-sway-mode.5.scd

@@ -0,0 +1,64 @@
+waybar-sway-mode(5)
+
+# NAME
+
+waybar - sway mode module
+
+# DESCRIPTION
+
+The *mode* module displays the current binding mode of Sway
+
+# CONFIGURATION
+
+Addressed by *sway/mode*
+
+*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.
+
+*on-click*: ++
+	typeof: string ++
+	Command to execute when clicked on the module.
+
+*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.
+
+# EXAMPLES
+
+```
+"sway/window": {
+    "format": " {}",
+    "max-length": 50
+}
+```
+
+# STYLE
+
+- *#mode*

man/waybar-sway-window.5.scd

@@ -0,0 +1,67 @@
+waybar-sway-window(5)
+
+# NAME
+
+waybar - sway window module
+
+# DESCRIPTION
+
+The *window* module displays the title of the currently focused window in Sway
+
+# CONFIGURATION
+
+Addressed by *sway/window*
+
+*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.
+
+*on-click*: ++
+	typeof: string ++
+	Command to execute when clicked on the module.
+
+*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.
+
+# EXAMPLES
+
+```
+"sway/window": {
+    "format": "{}",
+    "max-length": 50
+}
+```
+
+# STYLE
+
+- *#window*
+- *window#waybar.empty* When no windows is in the workspace
+- *window#waybar.solo* When one window is in the workspace
+- *window#waybar.<app_id>* Where *app_id* is the app_id or *instance* name like (*chromium*) of the only window in the workspace

man/waybar-sway-workspaces.5.scd

@@ -0,0 +1,123 @@
+waybar-sway-workspaces(5)
+
+# NAME
+
+waybar - sway workspaces module
+
+# DESCRIPTION
+
+The *workspaces* module displays the currently used workspaces in Sway.
+
+# CONFIGURATION
+
+Addressed by *sway/workspaces*
+
+*all-outputs*: ++
+    typeof: bool ++
+    default: false ++
+    If set to false, workspaces will only be shown on the output they are on. If set to true all workspaces will be shown on every output.
+
+*format*: ++
+    typeof: string ++
+    default: {name} ++
+    The format, how information should be displayed.
+
+*format-icons*: ++
+    typeof: array ++
+    Based on the workspace name and state, the corresponding icon gets selected. See *icons*.
+
+*disable-scroll*: ++
+    typeof: bool ++
+    default: false ++
+    If set to false, you can scroll to cycle through workspaces. If set to true this behaviour is disabled.
+
+*smooth-scrolling-threshold*: ++
+    typeof: double ++
+    Threshold to be used when scrolling.
+
+*disable-scroll-wraparound*: ++
+    typeof: bool ++
+    default: false ++
+    If set to false, scrolling on the workspace indicator will wrap around to the first workspace when reading the end, and vice versa. If set to true this behavior is disabled.
+
+*enable-bar-scroll*: ++
+    typeof: bool ++
+    default: false ++
+    If set to false, you can't scroll to cycle throughout workspaces from the entire bar. If set to true this behaviour is enabled.
+
+*disable-markup*: ++
+    typeof: bool ++
+    default: false ++
+    If set to true, button label will escape pango markup.
+
+*current-only*: ++
+    typeof: bool ++
+    default: false ++
+    If set to true. Only focused workspaces will be shown.
+
+*persistent_workspaces*: ++
+    typeof: json (see below) ++
+    default: empty ++
+    Lists workspaces that should always be shown, even when non existent
+
+# FORMAT REPLACEMENTS
+
+*{name}*: Name of the workspace, as defined by sway.
+
+*{icon}*: Icon, as defined in *format-icons*.
+
+*{index}*: Index of the workspace.
+
+# ICONS
+
+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 WORKSPACES
+
+Each entry of *persistent_workspace* names a workspace that should always be shown.
+Associated with that value is a list of outputs indicating *where* the workspace should be shown,
+an empty list denoting all outputs.
+
+```
+"sway/workspaces": {
+    "persistent_workspaces": {
+        "3": [], // Always show a workspace with name '3', on all outputs if it does not exists
+        "4": ["eDP-1"], // Always show a workspace with name '4', on output 'eDP-1' if it does not exists
+        "5": ["eDP-1", "DP-2"] // Always show a workspace with name '5', on outputs 'eDP-1' and 'DP-2' if it does not exists
+    }
+}
+```
+
+n.b.: the list of outputs can be obtained from command line using *swaymsg -t get_outputs*
+
+# EXAMPLES
+
+```
+"sway/workspaces": {
+    "disable-scroll": true,
+    "all-outputs": true,
+    "format": "{name}: {icon}",
+    "format-icons": {
+        "1": "",
+        "2": "",
+        "3": "",
+        "4": "",
+        "5": "",
+        "urgent": "",
+        "focused": "",
+        "default": ""
+    }
+}
+```
+
+# Style
+
+- *#workspaces button*
+- *#workspaces button.visible*
+- *#workspaces button.focused*
+- *#workspaces button.urgent*
+- *#workspaces button.persistent*

man/waybar-temperature.5.scd

@@ -0,0 +1,99 @@
+waybar-temperature(5)
+
+# NAME
+
+waybar - temperature module
+
+# DESCRIPTION
+
+The *temperature* module displays the current temperature from a thermal zone.
+
+# CONFIGURATION
+
+Addressed by *temperature*
+
+*thermal-zone*: ++
+    typeof: integer ++
+    The thermal zone, as in */sys/class/thermal/*.
+
+*hwmon-path*: ++
+    typeof: string ++
+    The temperature path to use, e.g. */sys/class/hwmon/hwmon2/temp1_input* instead of one in */sys/class/thermal/*.
+
+*critical-threshold*: ++
+    typeof: integer ++
+    The threshold before it is considered critical (Celcius).
+
+*interval*: ++
+    typeof: integer ++
+    default: 10 ++
+    The interval in which the information gets polled.
+
+*format-critical*: ++
+    typeof: string ++
+    The format to use when temperature is considered critical
+
+*format*: ++
+    typeof: string  ++
+    default: {temperatureC}°C ++
+    The format (Celcius/Farenheit) in which the temperature should be displayed.
+
+*format-icons*: ++
+    typeof: array ++
+    Based on the current temperature (Celcius) and *critical-threshold* if available, the corresponding icon gets selected. The order is *low* to *high*.
+
+*rotate*: ++
+    typeof: integer ++
+    Positive value to rotate the text label.
+
+*max-length*: ++
+    typeof: integer ++
+    The maximum length in characters the module should display.
+
+*on-click*: ++
+    typeof: string ++
+    Command to execute when you clicked on the module.
+
+*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.
+
+# FORMAT REPLACEMENTS
+
+*{temperatureC}*: Temperature in Celcius.
+
+*{temperatureF}*: Temperature in Fahrenheit.
+
+# EXAMPLES
+
+```
+ "temperature": {
+	// "thermal-zone": 2,
+	// "hwmon-path": "/sys/class/hwmon/hwmon2/temp1_input",
+	// "critical-threshold": 80,
+	// "format-critical": "{temperatureC}°C ",
+	"format": "{temperatureC}°C "
+}
+```
+
+# STYLE
+
+- *#temperature*
+- *#temperature.critical*

man/waybar-tray.5.scd

@@ -0,0 +1,35 @@
+waybar-tray(5)
+
+# NAME
+
+waybar - tray module
+
+# DESCRIPTION
+
+_WARNING_ *tray* is still in beta. There may me bugs. Breaking changes may occur.
+
+# CONFIGURATION
+
+Addressed by *tray*
+
+*icon-size*: ++
+    typeof: integer ++
+    Defines the size of the tray icons.
+
+*spacing*: ++
+    typeof: integer ++
+    Defines the spacing between the tray icons.
+
+# EXAMPLES
+
+```
+"tray": {
+    "icon-size": 21,
+    "spacing": 10
+}
+
+```
+
+# STYLE
+
+- *#tray*

man/waybar.5.scd

@@ -0,0 +1,193 @@
+waybar(5)
+
+# NAME
+
+waybar - configuration file
+
+# DESCRIPTION
+
+The configuration uses the JSON file format and is named *config*.
+
+Valid locations for this file are:
+
+- *$XDG_CONFIG_HOME/waybar/config*
+- *~/.config/waybar/config*
+- *~/waybar/config*
+- */etc/xdg/waybar/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
+
+*layer* ++
+	typeof: string ++
+	default: bottom ++
+	Decide if the bar is displayed in front of the windows or behind them.
+
+*output* ++
+	typeof: string|array ++
+	Specifies on which screen this bar will be displayed.
+
+*position* ++
+	typeof: string ++
+	default: top ++
+	Bar position, can be *top*, *bottom*, *left*, *right*.
+
+*height* ++
+	typeof: integer ++
+	Height to be used by the bar if possible. Leave blank for a dynamic value.
+
+*width* ++
+	typeof: integer ++
+	Width to be used by the bar if possible. Leave blank for a dynamic value.
+
+*modules-left* ++
+	typeof: array ++
+	Modules that will be displayed on the left.
+
+*modules-center* ++
+	typeof: array ++
+	Modules that will be displayed in the center.
+
+*modules-right* ++
+	typeof: array
+	Modules that will be displayed on the right.
+
+*margin* ++
+	typeof: string ++
+	Margins value using the CSS format without units.
+
+*margin-<top\|left\|bottom\|right>* ++
+	typeof: integer ++
+	Margins value without units.
+
+*name* ++
+	typeof: string ++
+	Optional name added as a CSS class, for styling multiple waybars.
+
+# MODULE FORMAT
+
+You can use PangoMarkupFormat (See https://developer.gnome.org/pango/stable/PangoMarkupFormat.html#PangoMarkupFormat).
+
+e.g.
+
+```
+"format": "<span style=\"italic\">{}</span>"
+```
+# MULTIPLE INSTANCES OF A MODULE
+
+If you want to have a second instance of a module, you can suffix it by a '#' and a custom name.
+For example if you want a second battery module, you can add *"battery#bat2"* to your modules.
+To configure the newly added module, you then also add a module configuration with the same name.
+
+This could then look something like this *(this is an incomplete example)*:
+
+```
+"modules-right": ["battery", "battery#bat2"],
+"battery": {
+	"bat": "BAT1"
+},
+"battery#bat2": {
+	"bat": "BAT2"
+}
+```
+
+# MINIMAL CONFIGURATION
+
+A minimal *config* file could look like this:
+
+```
+{
+	"layer": "top",
+	"modules-left": ["sway/workspaces", "sway/mode"],
+	"modules-center": ["sway/window"],
+	"modules-right": ["battery", "clock"],
+	"sway/window": {
+		"max-length": 50
+	},
+	"battery": {
+		"format": "{capacity}% {icon}",
+		"format-icons": ["", "", "", "", ""]
+	},
+	"clock": {
+		"format-alt": "{:%a, %d. %b  %H:%M}"
+	}
+}
+```
+
+# MULTI OUTPUT CONFIGURATION
+
+## Limit a configuration to some outputs
+
+```
+{
+	"layer": "top",
+	"output": "eDP-1",
+	"modules-left": ["sway/workspaces", "sway/mode"],
+	...
+
+}
+
+```
+
+```
+{
+	"layer": "top",
+	"output": ["eDP-1", "VGA"],
+	"modules-left": ["sway/workspaces", "sway/mode"],
+	...
+}
+
+```
+
+## Configuration of multiple outputs
+
+Don't specify an output to create multiple bars on the same screen.
+
+```
+[{
+	"layer": "top",
+	"output": "eDP-1",
+	"modules-left": ["sway/workspaces", "sway/mode"],
+	...
+}, {
+	"layer": "top",
+	"output": "VGA",
+	"modules-right": ["clock"],
+	...
+}]
+
+```
+
+## Rotating modules
+
+When positioning Waybar on the left or right side of the screen, sometimes it's useful to be able to rotate the contents of a module so the text runs vertically. This can be done using the "rotate" property of the module. Example:
+
+```
+{
+	"clock": {
+		"rotate": 90
+	}
+}
+```
+
+Valid options for the "rotate" property are: 0, 90, 180 and 270.
+
+# SUPPORTED MODULES
+
+- *waybar-backlight(5)*
+- *waybar-battery(5)*
+- *waybar-clock(5)*
+- *waybar-cpu(5)*
+- *waybar-custom(5)*
+- *waybar-idle-inhibitor(5)*
+- *waybar-memory(5)*
+- *waybar-mdp(5)*
+- *waybar-network(5)*
+- *waybar-pulseaudio(5)*
+- *waybar-sway-mode(5)*
+- *waybar-sway-window(5)*
+- *waybar-sway-workspaces(5)*
+- *waybar-temperature(5)*
+- *waybar-tray(5)*

meson.build

@@ -1,6 +1,6 @@
 project(
     'waybar', 'cpp', 'c',
-    version: '0.6.2',
+    version: '0.9.0',
     license: 'MIT',
     default_options : [
         'cpp_std=c++17',
@@ -12,7 +12,7 @@ project(
 cpp_args = []
 cpp_link_args = []
 
-if false # libc++
+if get_option('libcxx')
     cpp_args += ['-stdlib=libc++']
     cpp_link_args += ['-stdlib=libc++', '-lc++abi']
 
@@ -34,7 +34,12 @@ else
 endif
 
 if not compiler.has_header('filesystem')
-    add_project_arguments('-DFILESYSTEM_EXPERIMENTAL', language: 'cpp')
+    if compiler.has_header('experimental/filesystem')
+        add_project_arguments('-DFILESYSTEM_EXPERIMENTAL', language: 'cpp')
+    else
+        add_project_arguments('-DNO_FILESYSTEM', language: 'cpp')
+        warning('No filesystem header found, some modules may not work')
+    endif
 endif
 
 add_global_arguments(cpp_args, language : 'cpp')
@@ -43,11 +48,11 @@ add_global_link_arguments(cpp_link_args, language : 'cpp')
 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'])
 wayland_client = dependency('wayland-client')
 wayland_cursor = dependency('wayland-cursor')
 wayland_protos = dependency('wayland-protocols')
-wlroots = dependency('wlroots', fallback: ['wlroots', 'wlroots'])
-gtkmm = dependency('gtkmm-3.0')
+gtkmm = dependency('gtkmm-3.0', version : ['>=3.22.0'])
 dbusmenu_gtk = dependency('dbusmenu-gtk3-0.4', required: get_option('dbusmenu-gtk'))
 giounix = dependency('gio-unix-2.0', required: get_option('dbusmenu-gtk'))
 jsoncpp = dependency('jsoncpp')
@@ -57,16 +62,37 @@ 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'))
+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'))
+
+prefix = get_option('prefix')
+conf_data = configuration_data()
+conf_data.set('prefix', prefix)
+
+if systemd.found()
+  user_units_dir = systemd.get_pkgconfig_variable('systemduserunitdir')
+
+  configure_file(
+    configuration: conf_data,
+    input: './resources/waybar.service.in',
+    output: '@BASENAME@',
+    install_dir: user_units_dir
+  )
+endif
 
 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/idle_inhibitor.cpp',
+    'src/modules/disk.cpp',
+    'src/modules/idle_inhibitor.cpp',
     'src/modules/temperature.cpp',
     'src/main.cpp',
     'src/bar.cpp',
@@ -113,6 +139,10 @@ if libmpdclient.found()
     src_files += 'src/modules/mpd.cpp'
 endif
 
+if gtk_layer_shell.found()
+    add_project_arguments('-DHAVE_GTK_LAYER_SHELL', language: 'cpp')
+endif
+
 subdir('protocol')
 
 executable(
@@ -120,10 +150,10 @@ executable(
     src_files,
     dependencies: [
         thread_dep,
-        wlroots,
         client_protos,
         wayland_client,
         fmt,
+        spdlog,
         sigcpp,
         jsoncpp,
         libinput,
@@ -135,7 +165,8 @@ executable(
         libnlgen,
         libpulse,
         libudev,
-        libmpdclient
+        libmpdclient,
+        gtk_layer_shell
     ],
     include_directories: [include_directories('include')],
     install: true,
@@ -147,6 +178,51 @@ install_data(
     install_dir: join_paths(get_option('out'), 'etc/xdg/waybar')
 )
 
+scdoc = dependency('scdoc', version: '>=1.9.2', native: true, required: get_option('man-pages'))
+
+if scdoc.found()
+    scdoc_prog = find_program(scdoc.get_pkgconfig_variable('scdoc'), native: true)
+    sh = find_program('sh', native: true)
+    mandir = get_option('mandir')
+    man_files = [
+        'waybar.5.scd',
+        'waybar-backlight.5.scd',
+        'waybar-battery.5.scd',
+        'waybar-clock.5.scd',
+        'waybar-cpu.5.scd',
+        'waybar-custom.5.scd',
+        'waybar-disk.5.scd',
+        'waybar-idle-inhibitor.5.scd',
+        'waybar-memory.5.scd',
+        'waybar-mpd.5.scd',
+        'waybar-network.5.scd',
+        'waybar-pulseaudio.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',
+    ]
+
+    foreach filename : man_files
+        topic = filename.split('.')[-3].split('/')[-1]
+        section = filename.split('.')[-2]
+        output = '@0@.@1@'.format(topic, section)
+
+        custom_target(
+            output,
+            input: 'man/@0@'.format(filename),
+            output: output,
+            command: [
+                sh, '-c', '@0@ < @INPUT@ > @1@'.format(scdoc_prog.path(), output)
+            ],
+            install: true,
+            install_dir: '@0@/man@1@'.format(mandir, section)
+        )
+    endforeach
+endif
+
 clangtidy = find_program('clang-tidy', required: false)
 
 if clangtidy.found()

meson_options.txt

@@ -1,6 +1,10 @@
+option('libcxx', type : 'boolean', value : false, description : 'Build with Clang\'s libc++ instead of libstdc++ on Linux.')
 option('libnl', type: 'feature', value: 'auto', description: 'Enable libnl support for network related features')
 option('libudev', type: 'feature', value: 'auto', description: 'Enable libudev support for udev related features')
 option('pulseaudio', type: 'feature', value: 'auto', description: 'Enable support for pulseaudio')
+option('systemd', type: 'feature', value: 'auto', description: 'Install systemd user service unit')
 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')

resources/config

@@ -78,8 +78,9 @@
         // "thermal-zone": 2,
         // "hwmon-path": "/sys/class/hwmon/hwmon2/temp1_input",
         "critical-threshold": 80,
-        // "format-critical": "{temperatureC}°C ",
-        "format": "{temperatureC}°C "
+        // "format-critical": "{temperatureC}°C {icon}",
+        "format": "{temperatureC}°C {icon}",
+        "format-icons": ["", "", ""]
     },
     "backlight": {
         // "device": "acpi_video1",
@@ -93,6 +94,9 @@
             "critical": 15
         },
         "format": "{capacity}% {icon}",
+        "format-charging": "{capacity}% ",
+        "format-plugged": "{capacity}% ",
+        "format-alt": "{time} {icon}",
         // "format-good": "", // An empty format will hide the module
         // "format-full": "",
         "format-icons": ["", "", "", "", ""]
@@ -101,16 +105,21 @@
         "bat": "BAT2"
     },
     "network": {
-        // "interface": "wlp2s0", // (Optional) To force the use of this interface
+        // "interface": "wlp2*", // (Optional) To force the use of this interface
         "format-wifi": "{essid} ({signalStrength}%) ",
-        "format-ethernet": "{ifname}: {ipaddr}/{cidr} ",
-        "format-disconnected": "Disconnected ⚠"
+        "format-ethernet": "{ifname}: {ipaddr}/{cidr} ",
+        "format-linked": "{ifname} (No IP) ",
+        "format-disconnected": "Disconnected ⚠",
+        "format-alt": "{ifname}: {ipaddr}/{cidr}"
     },
     "pulseaudio": {
-        //"scroll-step": 1,
-        "format": "{volume}% {icon}",
-        "format-bluetooth": "{volume}% {icon}",
-        "format-muted": "",
+        // "scroll-step": 1, // %, can be a float
+        "format": "{volume}% {icon} {format_source}",
+        "format-bluetooth": "{volume}% {icon} {format_source}",
+        "format-bluetooth-muted": " {icon} {format_source}",
+        "format-muted": " {format_source}",
+        "format-source": "{volume}% ",
+        "format-source-muted": "",
         "format-icons": {
             "headphones": "",
             "handsfree": "",
@@ -118,7 +127,7 @@
             "phone": "",
             "portable": "",
             "car": "",
-            "default": ["", ""]
+            "default": ["", "", ""]
         },
         "on-click": "pavucontrol"
     },
@@ -132,5 +141,6 @@
         },
         "escape": true,
         "exec": "$HOME/.config/waybar/mediaplayer.py 2> /dev/null" // Script in resources folder
+        // "exec": "$HOME/.config/waybar/mediaplayer.py --player spotify 2> /dev/null" // Filter player based on name
     }
 }

resources/custom_modules/mediaplayer.py

@@ -39,13 +39,13 @@ def on_metadata(player, metadata, manager):
         track_info = '{artist} - {title}'.format(artist=player.get_artist(),
                                                  title=player.get_title())
 
-    if player.props.status != 'Playing':
+    if player.props.status != 'Playing' and track_info:
         track_info = ' ' + track_info
     write_output(track_info, player)
 
 
 def on_player_appeared(manager, player, selected_player=None):
-    if player is not None and player.name == selected_player:
+    if player is not None and (selected_player is None or player.name == selected_player):
         init_player(manager, player)
     else:
         logger.debug("New player appeared, but it's not the selected player, skipping")

resources/style.css

@@ -1,16 +1,17 @@
 * {
     border: none;
     border-radius: 0;
+    /* `otf-font-awesome` is required to be installed for icons */
     font-family: Roboto, Helvetica, Arial, sans-serif;
     font-size: 13px;
     min-height: 0;
 }
 
 window#waybar {
-    background: rgba(43, 48, 59, 0.5);
+    background-color: rgba(43, 48, 59, 0.5);
     border-bottom: 3px solid rgba(100, 114, 125, 0.5);
     color: #ffffff;
-    transition-property: background, background-color;
+    transition-property: background-color;
     transition-duration: .5s;
 }
 
@@ -20,10 +21,10 @@ window#waybar.hidden {
 
 /*
 window#waybar.empty {
-    background: transparent;
+    background-color: transparent;
 }
 window#waybar.solo {
-    background: #FFFFFF;
+    background-color: #FFFFFF;
 }
 */
 
@@ -32,30 +33,27 @@ window#waybar.termite {
 }
 
 window#waybar.chromium {
-    background-color: #DEE1E6;
-    color: #000000;
+    background-color: #000000;
     border: none;
 }
 
-/* https://github.com/Alexays/Waybar/wiki/FAQ#the-workspace-buttons-have-a-strange-hover-effect */
 #workspaces button {
     padding: 0 5px;
-    background: transparent;
+    background-color: transparent;
     color: #ffffff;
     border-bottom: 3px solid transparent;
 }
 
-window#waybar.chromium #workspaces button {
-    color: #3F3F3F;
-}
-
-#workspaces button.focused {
-    background: #64727D;
+/* 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;
     border-bottom: 3px solid #ffffff;
 }
 
-window#waybar.chromium #workspaces button.focused {
-    color: #ffffff;
+#workspaces button.focused {
+    background-color: #64727D;
+    border-bottom: 3px solid #ffffff;
 }
 
 #workspaces button.urgent {
@@ -63,13 +61,25 @@ window#waybar.chromium #workspaces button.focused {
 }
 
 #mode {
-    background: #64727D;
+    background-color: #64727D;
     border-bottom: 3px solid #ffffff;
 }
 
-#clock, #battery, #cpu, #memory, #temperature, #backlight, #network, #pulseaudio, #custom-media, #tray, #mode, #idle_inhibitor {
+#clock,
+#battery,
+#cpu,
+#memory,
+#temperature,
+#backlight,
+#network,
+#pulseaudio,
+#custom-media,
+#tray,
+#mode,
+#idle_inhibitor,
+#mpd {
     padding: 0 10px;
-    margin: 0 5px;
+    margin: 0 4px;
     color: #ffffff;
 }
 
@@ -95,7 +105,7 @@ window#waybar.chromium #workspaces button.focused {
 }
 
 #battery.critical:not(.charging) {
-    background: #f53c3c;
+    background-color: #f53c3c;
     color: #ffffff;
     animation-name: blink;
     animation-duration: 0.5s;
@@ -109,55 +119,56 @@ label:focus {
 }
 
 #cpu {
-    background: #2ecc71;
+    background-color: #2ecc71;
     color: #000000;
 }
 
 #memory {
-    background: #9b59b6;
+    background-color: #9b59b6;
 }
 
 #backlight {
-    background: #90b1b1;
+    background-color: #90b1b1;
 }
 
 #network {
-    background: #2980b9;
+    background-color: #2980b9;
 }
 
 #network.disconnected {
-    background: #f53c3c;
+    background-color: #f53c3c;
 }
 
 #pulseaudio {
-    background: #f1c40f;
+    background-color: #f1c40f;
     color: #000000;
 }
 
 #pulseaudio.muted {
-    background: #90b1b1;
+    background-color: #90b1b1;
     color: #2a5c45;
 }
 
 #custom-media {
-    background: #66cc99;
+    background-color: #66cc99;
     color: #2a5c45;
+    min-width: 100px;
 }
 
-.custom-spotify {
-    background: #66cc99;
+#custom-media.custom-spotify {
+    background-color: #66cc99;
 }
 
-.custom-vlc {
-    background: #ffa000;
+#custom-media.custom-vlc {
+    background-color: #ffa000;
 }
 
 #temperature {
-    background: #f0932b;
+    background-color: #f0932b;
 }
 
 #temperature.critical {
-    background: #eb4d4b;
+    background-color: #eb4d4b;
 }
 
 #tray {
@@ -174,18 +185,18 @@ label:focus {
 }
 
 #mpd {
-    background: #66cc99;
+    background-color: #66cc99;
     color: #2a5c45;
 }
 
 #mpd.disconnected {
-    background: #f53c3c;
+    background-color: #f53c3c;
 }
 
 #mpd.stopped {
-    background: #90b1b1;
+    background-color: #90b1b1;
 }
 
 #mpd.paused {
-    background: #51a37a;
+    background-color: #51a37a;
 }

resources/waybar.service.in

@@ -0,0 +1,12 @@
+[Unit]
+Description=Highly customizable Wayland bar for Sway and Wlroots based compositors.
+Documentation=https://github.com/Alexays/Waybar/wiki/
+PartOf=wayland-session.target
+
+[Service]
+Type=dbus
+BusName=fr.arouillard.waybar
+ExecStart=@prefix@/bin/waybar
+
+[Install]
+WantedBy=wayland-session.target

src/ALabel.cpp

@@ -2,114 +2,39 @@
 #include <fmt/format.h>
 #include <util/command.hpp>
 
-waybar::ALabel::ALabel(const Json::Value& config, const std::string& format, uint16_t interval)
-    : config_(config),
+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)
+    : AModule(config, name, id, config["format-alt"].isString()),
       format_(config_["format"].isString() ? config_["format"].asString() : format),
       interval_(config_["interval"] == "once"
                     ? std::chrono::seconds(100000000)
                     : std::chrono::seconds(
                           config_["interval"].isUInt() ? config_["interval"].asUInt() : interval)),
       default_format_(format_) {
+  label_.set_name(name);
+  if (!id.empty()) {
+    label_.get_style_context()->add_class(id);
+  }
   event_box_.add(label_);
   if (config_["max-length"].isUInt()) {
     label_.set_max_width_chars(config_["max-length"].asUInt());
     label_.set_ellipsize(Pango::EllipsizeMode::ELLIPSIZE_END);
+  } else if (ellipsize && label_.get_max_width_chars() == -1) {
+    label_.set_ellipsize(Pango::EllipsizeMode::ELLIPSIZE_END);
   }
 
   if (config_["rotate"].isUInt()) {
     label_.set_angle(config["rotate"].asUInt());
   }
-
-  if (config_["format-alt"].isString()) {
-    event_box_.add_events(Gdk::BUTTON_PRESS_MASK);
-    event_box_.signal_button_press_event().connect(sigc::mem_fun(*this, &ALabel::handleToggle));
-  }
-
-  // configure events' user commands
-  if (config_["on-click"].isString() || config_["on-click-middle"].isString() ||
-      config_["on-click-backward"].isString() || config_["on-click-forward"].isString() ||
-      config_["on-click-right"].isString()) {
-    event_box_.add_events(Gdk::BUTTON_PRESS_MASK);
-    event_box_.signal_button_press_event().connect(sigc::mem_fun(*this, &ALabel::handleToggle));
-  }
-  if (config_["on-scroll-up"].isString() || config_["on-scroll-down"].isString()) {
-    event_box_.add_events(Gdk::SCROLL_MASK | Gdk::SMOOTH_SCROLL_MASK);
-    event_box_.signal_scroll_event().connect(sigc::mem_fun(*this, &ALabel::handleScroll));
-  }
 }
 
-waybar::ALabel::~ALabel() {
-  for (const auto& pid : pid_) {
-    if (pid != -1) {
-      kill(-pid, 9);
-    }
-  }
-}
-
-auto waybar::ALabel::update() -> void {
+auto ALabel::update() -> void {
   // Nothing here
 }
 
-bool waybar::ALabel::handleToggle(GdkEventButton* const& e) {
-  std::string format;
-  if (config_["on-click"].isString() && e->button == 1) {
-    format = config_["on-click"].asString();
-  } else if (config_["on-click-middle"].isString() && e->button == 2) {
-    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) {
-    format = config_["on-click-backward"].asString();
-  } else if (config_["on-click-backward"].isString() && e->button == 9) {
-    format = config_["on-click-forward"].asString();
-  }
-  if (!format.empty()) {
-    pid_.push_back(
-        waybar::util::command::forkExec(fmt::format(format, fmt::arg("arg", click_param))));
-  }
-  if (config_["format-alt-click"].isUInt() && e->button == config_["format-alt-click"].asUInt()) {
-    alt_ = !alt_;
-    if (alt_ && config_["format-alt"].isString()) {
-      format_ = config_["format-alt"].asString();
-    } else {
-      format_ = default_format_;
-    }
-  }
-
-  dp.emit();
-  return true;
-}
-
-bool waybar::ALabel::handleScroll(GdkEventScroll* e) {
-  // Avoid concurrent scroll event
-  std::lock_guard<std::mutex> lock(mutex_);
-  bool                        direction_up = false;
-
-  if (e->direction == GDK_SCROLL_UP) {
-    direction_up = true;
-  }
-  if (e->direction == GDK_SCROLL_DOWN) {
-    direction_up = false;
-  }
-  if (e->direction == GDK_SCROLL_SMOOTH) {
-    gdouble delta_x, delta_y;
-    gdk_event_get_scroll_deltas(reinterpret_cast<const GdkEvent*>(e), &delta_x, &delta_y);
-    if (delta_y < 0) {
-      direction_up = true;
-    } else if (delta_y > 0) {
-      direction_up = false;
-    }
-  }
-  if (direction_up && config_["on-scroll-up"].isString()) {
-    pid_.push_back(waybar::util::command::forkExec(config_["on-scroll-up"].asString()));
-  } else if (config_["on-scroll-down"].isString()) {
-    pid_.push_back(waybar::util::command::forkExec(config_["on-scroll-down"].asString()));
-  }
-  dp.emit();
-  return true;
-}
-
-std::string waybar::ALabel::getIcon(uint16_t percentage, const std::string& alt) {
+std::string ALabel::getIcon(uint16_t percentage, const std::string& alt, uint16_t max) {
   auto format_icons = config_["format-icons"];
   if (format_icons.isObject()) {
     if (!alt.empty() && (format_icons[alt].isString() || format_icons[alt].isArray())) {
@@ -120,7 +45,7 @@ std::string waybar::ALabel::getIcon(uint16_t percentage, const std::string& alt)
   }
   if (format_icons.isArray()) {
     auto size = format_icons.size();
-    auto idx = std::clamp(percentage / (100 / size), 0U, size - 1);
+    auto idx = std::clamp(percentage / ((max == 0 ? 100 : max) / size), 0U, size - 1);
     format_icons = format_icons[idx];
   }
   if (format_icons.isString()) {
@@ -129,7 +54,22 @@ std::string waybar::ALabel::getIcon(uint16_t percentage, const std::string& alt)
   return "";
 }
 
-std::string waybar::ALabel::getState(uint8_t value) {
+bool waybar::ALabel::handleToggle(GdkEventButton* const& e) {
+  if (config_["format-alt-click"].isUInt() && e->button == config_["format-alt-click"].asUInt()) {
+    alt_ = !alt_;
+    if (alt_ && config_["format-alt"].isString()) {
+      format_ = config_["format-alt"].asString();
+    } else {
+      format_ = default_format_;
+    }
+  }
+  return AModule::handleToggle(e);
+}
+
+std::string ALabel::getState(uint8_t value, bool lesser) {
+  if (!config_["states"].isObject()) {
+    return "";
+  }
   // Get current state
   std::vector<std::pair<std::string, uint8_t>> states;
   if (config_["states"].isObject()) {
@@ -140,10 +80,12 @@ std::string waybar::ALabel::getState(uint8_t value) {
     }
   }
   // Sort states
-  std::sort(states.begin(), states.end(), [](auto& a, auto& b) { return a.second < b.second; });
+  std::sort(states.begin(), states.end(), [&lesser](auto& a, auto& b) {
+    return lesser ? a.second < b.second : a.second > b.second;
+  });
   std::string valid_state;
   for (auto const& state : states) {
-    if (value <= state.second && valid_state.empty()) {
+    if ((lesser ? value <= state.second : value >= state.second) && valid_state.empty()) {
       label_.get_style_context()->add_class(state.first);
       valid_state = state.first;
     } else {
@@ -153,8 +95,4 @@ std::string waybar::ALabel::getState(uint8_t value) {
   return valid_state;
 }
 
-bool waybar::ALabel::tooltipEnabled() {
-  return config_["tooltip"].isBool() ? config_["tooltip"].asBool() : true;
-}
-
-waybar::ALabel::operator Gtk::Widget&() { return event_box_; }
+}  // namespace waybar

src/AModule.cpp

@@ -0,0 +1,119 @@
+#include "AModule.hpp"
+#include <fmt/format.h>
+#include <util/command.hpp>
+
+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)) {
+  // configure events' user commands
+  if (config_["on-click"].isString() || config_["on-click-middle"].isString() ||
+      config_["on-click-backward"].isString() || config_["on-click-forward"].isString() ||
+      config_["on-click-right"].isString() || enable_click) {
+    event_box_.add_events(Gdk::BUTTON_PRESS_MASK);
+    event_box_.signal_button_press_event().connect(sigc::mem_fun(*this, &AModule::handleToggle));
+  }
+  if (config_["on-scroll-up"].isString() || config_["on-scroll-down"].isString() || enable_scroll) {
+    event_box_.add_events(Gdk::SCROLL_MASK | Gdk::SMOOTH_SCROLL_MASK);
+    event_box_.signal_scroll_event().connect(sigc::mem_fun(*this, &AModule::handleScroll));
+  }
+}
+
+AModule::~AModule() {
+  for (const auto& pid : pid_) {
+    if (pid != -1) {
+      kill(-pid, 9);
+    }
+  }
+}
+
+auto AModule::update() -> void {
+  // Nothing here
+}
+
+bool AModule::handleToggle(GdkEventButton* const& e) {
+  std::string format;
+  if (config_["on-click"].isString() && e->button == 1) {
+    format = config_["on-click"].asString();
+  } else if (config_["on-click-middle"].isString() && e->button == 2) {
+    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) {
+    format = config_["on-click-backward"].asString();
+  } else if (config_["on-click-backward"].isString() && e->button == 9) {
+    format = config_["on-click-forward"].asString();
+  }
+  if (!format.empty()) {
+    pid_.push_back(util::command::forkExec(format));
+  }
+  dp.emit();
+  return true;
+}
+
+AModule::SCROLL_DIR AModule::getScrollDir(GdkEventScroll* e) {
+  switch (e -> direction) {
+    case GDK_SCROLL_UP: return SCROLL_DIR::UP;
+    case GDK_SCROLL_DOWN: return SCROLL_DIR::DOWN;
+    case GDK_SCROLL_LEFT: return SCROLL_DIR::LEFT;
+    case GDK_SCROLL_RIGHT: return SCROLL_DIR::RIGHT;
+    case GDK_SCROLL_SMOOTH: {
+      SCROLL_DIR dir{SCROLL_DIR::NONE};
+
+      distance_scrolled_y_ += e->delta_y;
+      distance_scrolled_x_ += e->delta_x;
+
+      gdouble threshold = 0;
+      if (config_["smooth-scrolling-threshold"].isNumeric()) {
+        threshold = config_["smooth-scrolling-threshold"].asDouble();
+      }
+
+      if (distance_scrolled_y_ < -threshold) {
+        dir = SCROLL_DIR::UP;
+      } else if (distance_scrolled_y_ > threshold) {
+        dir = SCROLL_DIR::DOWN;
+      } else if (distance_scrolled_x_ > threshold) {
+        dir = SCROLL_DIR::RIGHT;
+      } else if (distance_scrolled_x_ < -threshold) {
+        dir = SCROLL_DIR::LEFT;
+      }
+
+      switch (dir) {
+        case SCROLL_DIR::UP:
+        case SCROLL_DIR::DOWN:
+          distance_scrolled_y_ = 0;
+          break;
+        case SCROLL_DIR::LEFT:
+        case SCROLL_DIR::RIGHT:
+          distance_scrolled_x_ = 0;
+          break;
+        case SCROLL_DIR::NONE:
+          break;
+      }
+
+      return dir;
+    }
+    // Silence -Wreturn-type:
+    default: return SCROLL_DIR::NONE;
+  }
+}
+
+bool AModule::handleScroll(GdkEventScroll* e) {
+  auto dir = getScrollDir(e);
+  if (dir == SCROLL_DIR::UP && config_["on-scroll-up"].isString()) {
+    pid_.push_back(util::command::forkExec(config_["on-scroll-up"].asString()));
+  } else if (dir == SCROLL_DIR::DOWN && config_["on-scroll-down"].isString()) {
+    pid_.push_back(util::command::forkExec(config_["on-scroll-down"].asString()));
+  }
+  dp.emit();
+  return true;
+}
+
+bool AModule::tooltipEnabled() {
+  return config_["tooltip"].isBool() ? config_["tooltip"].asBool() : true;
+}
+
+AModule::operator Gtk::Widget&() { return event_box_; }
+
+}  // namespace waybar

src/bar.cpp

@@ -1,13 +1,19 @@
+#ifdef HAVE_GTK_LAYER_SHELL
+#include <gtk-layer-shell.h>
+#endif
+
 #include "bar.hpp"
 #include "client.hpp"
 #include "factory.hpp"
+#include <spdlog/spdlog.h>
 
 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_surface(nullptr),
+      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),
@@ -15,49 +21,30 @@ waybar::Bar::Bar(struct waybar_output* w_output, const Json::Value& w_config)
   window.set_title("waybar");
   window.set_name("waybar");
   window.set_decorated(false);
+  window.get_style_context()->add_class(output->name);
+  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") {
     height_ = 0;
     width_ = 1;
   }
-  window.set_size_request(width_, height_);
+  height_ = config["height"].isUInt() ? config["height"].asUInt() : height_;
+  width_ = config["width"].isUInt() ? config["width"].asUInt() : width_;
 
-  auto gtk_window = window.gobj();
-  auto gtk_widget = GTK_WIDGET(gtk_window);
-  gtk_widget_realize(gtk_widget);
-  auto gdk_window = window.get_window()->gobj();
-  gdk_wayland_window_set_use_custom_surface(gdk_window);
-  surface = gdk_wayland_window_get_wl_surface(gdk_window);
-
-  std::size_t layer =
-      config["layer"] == "top" ? ZWLR_LAYER_SHELL_V1_LAYER_TOP : ZWLR_LAYER_SHELL_V1_LAYER_BOTTOM;
-  auto client = waybar::Client::inst();
-  layer_surface = zwlr_layer_shell_v1_get_layer_surface(
-      client->layer_shell, surface, output->output, layer, "waybar");
-  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);
-
-  auto height = config["height"].isUInt() ? config["height"].asUInt() : height_;
-  auto width = config["width"].isUInt() ? config["width"].asUInt() : width_;
-
-  window.signal_configure_event().connect_notify(sigc::mem_fun(*this, &Bar::onConfigure));
-
-  std::size_t anchor = ZWLR_LAYER_SURFACE_V1_ANCHOR_TOP;
   if (config["position"] == "bottom") {
-    anchor = ZWLR_LAYER_SURFACE_V1_ANCHOR_BOTTOM;
+    anchor_ = ZWLR_LAYER_SURFACE_V1_ANCHOR_BOTTOM;
   } else if (config["position"] == "left") {
-    anchor = ZWLR_LAYER_SURFACE_V1_ANCHOR_LEFT;
+    anchor_ = ZWLR_LAYER_SURFACE_V1_ANCHOR_LEFT;
   } else if (config["position"] == "right") {
-    anchor = ZWLR_LAYER_SURFACE_V1_ANCHOR_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;
+  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);
@@ -65,17 +52,6 @@ waybar::Bar::Bar(struct waybar_output* w_output, const Json::Value& w_config)
     vertical = true;
   }
 
-  zwlr_layer_surface_v1_set_anchor(layer_surface, anchor);
-  zwlr_layer_surface_v1_set_size(layer_surface, width, height);
-  setMarginsAndZone(height, width);
-
-  wl_surface_commit(surface);
-  wl_display_roundtrip(client->wl_display);
-
-  setupWidgets();
-}
-
-void waybar::Bar::setMarginsAndZone(uint32_t height, uint32_t width) {
   if (config["margin-top"].isInt() || config["margin-right"].isInt() ||
       config["margin-bottom"].isInt() || config["margin-left"].isInt()) {
     margins_ = {
@@ -114,16 +90,30 @@ void waybar::Bar::setMarginsAndZone(uint32_t height, uint32_t width) {
                     .left = std::stoi(margins[3], nullptr, 10)};
       }
     } catch (...) {
-      std::cerr << "Invalid margins: " + config["margin"].asString() << std::endl;
+      spdlog::warn("Invalid margins: {}", config["margin"].asString());
     }
   } else if (config["margin"].isInt()) {
     auto gaps = config["margin"].asInt();
     margins_ = {.top = gaps, .right = gaps, .bottom = gaps, .left = gaps};
   }
-  zwlr_layer_surface_v1_set_margin(
-      layer_surface, margins_.top, margins_.right, margins_.bottom, margins_.left);
-  auto zone = vertical ? width + margins_.right : height + margins_.bottom;
-  zwlr_layer_surface_v1_set_exclusive_zone(layer_surface, zone);
+
+#ifdef HAVE_GTK_LAYER_SHELL
+  use_gls_ = config["gtk-layer-shell"].isBool() ? config["gtk-layer-shell"].asBool() : true;
+  if (use_gls_) {
+    initGtkLayerShell();
+  }
+#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) {
@@ -132,10 +122,10 @@ void waybar::Bar::onConfigure(GdkEventConfigure* ev) {
   if (ev->height > static_cast<int>(height_)) {
     // Default minimal value
     if (height_ != 1) {
-      std::cout << fmt::format(MIN_HEIGHT_MSG, height_, ev->height) << std::endl;
+      spdlog::warn(MIN_HEIGHT_MSG, height_, ev->height);
     }
     if (config["height"].isUInt()) {
-      std::cout << fmt::format(SIZE_DEFINED, "Height") << std::endl;
+      spdlog::info(SIZE_DEFINED, "Height");
     } else {
       tmp_height = ev->height;
     }
@@ -143,19 +133,130 @@ void waybar::Bar::onConfigure(GdkEventConfigure* ev) {
   if (ev->width > static_cast<int>(width_)) {
     // Default minimal value
     if (width_ != 1) {
-      std::cout << fmt::format(MIN_WIDTH_MSG, width_, ev->width) << std::endl;
+      spdlog::warn(MIN_WIDTH_MSG, width_, ev->width);
     }
     if (config["width"].isUInt()) {
-      std::cout << fmt::format(SIZE_DEFINED, "Width") << std::endl;
+      spdlog::info(SIZE_DEFINED, "Width");
     } else {
       tmp_width = ev->width;
     }
   }
-  if (tmp_width != width_ || tmp_height != height_) {
-    zwlr_layer_surface_v1_set_size(layer_surface, tmp_width, tmp_height);
+  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);
+  }
+}
+
+void waybar::Bar::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 (vertical && height > 1) {
+    height += margins_.top + margins_.bottom;
+  }
+  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);
+}
+
 // 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)) {
@@ -225,13 +326,11 @@ void waybar::Bar::layerSurfaceHandleConfigure(void* data, struct zwlr_layer_surf
     o->height_ = height;
     o->window.set_size_request(o->width_, o->height_);
     o->window.resize(o->width_, o->height_);
-    auto zone = o->vertical ? width + o->margins_.right : height + o->margins_.bottom;
-    zwlr_layer_surface_v1_set_exclusive_zone(o->layer_surface, zone);
-    std::cout << fmt::format(BAR_SIZE_MSG,
-                             o->width_ == 1 ? "auto" : std::to_string(o->width_),
-                             o->height_ == 1 ? "auto" : std::to_string(o->height_),
-                             o->output->name)
-              << std::endl;
+    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);
@@ -239,7 +338,10 @@ void waybar::Bar::layerSurfaceHandleConfigure(void* data, struct zwlr_layer_surf
 
 void waybar::Bar::layerSurfaceHandleClosed(void* data, struct zwlr_layer_surface_v1* /*surface*/) {
   auto o = static_cast<waybar::Bar*>(data);
-  zwlr_layer_surface_v1_destroy(o->layer_surface);
+  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();
@@ -247,13 +349,14 @@ void waybar::Bar::layerSurfaceHandleClosed(void* data, struct zwlr_layer_surface
 
 auto waybar::Bar::toggle() -> void {
   visible = !visible;
-  auto zone = visible ? height_ : 0;
   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);
   }
-  zwlr_layer_surface_v1_set_exclusive_zone(layer_surface, zone);
+  setExclusiveZone(width_, height_);
   wl_surface_commit(surface);
 }
 
@@ -275,11 +378,11 @@ void waybar::Bar::getModules(const Factory& factory, const std::string& pos) {
           try {
             module->update();
           } catch (const std::exception& e) {
-            std::cerr << name.asString() + ": " + e.what() << std::endl;
+            spdlog::error("{}: {}", name.asString(), e.what());
           }
         });
       } catch (const std::exception& e) {
-        std::cerr << e.what() << std::endl;
+        spdlog::warn("module {}: {}", name.asString(), e.what());
       }
     }
   }
@@ -287,9 +390,9 @@ void waybar::Bar::getModules(const Factory& factory, const std::string& pos) {
 
 auto waybar::Bar::setupWidgets() -> void {
   window.add(box_);
-  box_.pack_start(left_, true, true);
+  box_.pack_start(left_, false, false);
   box_.set_center_widget(center_);
-  box_.pack_end(right_, true, true);
+  box_.pack_end(right_, false, false);
 
   // Convert to button code for every module that is used.
   setupAltFormatKeyForModuleList("modules-left");
@@ -301,14 +404,13 @@ auto waybar::Bar::setupWidgets() -> void {
   getModules(factory, "modules-center");
   getModules(factory, "modules-right");
   for (auto const& module : modules_left_) {
-    left_.pack_start(*module, false, true, 0);
+    left_.pack_start(*module, false, false);
   }
   for (auto const& module : modules_center_) {
-    center_.pack_start(*module, true, true, 0);
+    center_.pack_start(*module, false, false);
   }
   std::reverse(modules_right_.begin(), modules_right_.end());
   for (auto const& module : modules_right_) {
-    right_.pack_end(*module, false, false, 0);
+    right_.pack_end(*module, false, false);
   }
-  window.show_all();
 }

src/client.cpp

@@ -1,4 +1,6 @@
 #include "client.hpp"
+#include <fmt/ostream.h>
+#include <spdlog/spdlog.h>
 #include <fstream>
 #include <iostream>
 #include "util/clara.hpp"
@@ -9,7 +11,7 @@ waybar::Client *waybar::Client::inst() {
   return c;
 }
 
-const std::string waybar::Client::getValidPath(const std::vector<std::string> &paths) {
+const std::string waybar::Client::getValidPath(const std::vector<std::string> &paths) const {
   wordexp_t p;
 
   for (const std::string &path : paths) {
@@ -32,11 +34,6 @@ void waybar::Client::handleGlobal(void *data, struct wl_registry *registry, uint
   if (strcmp(interface, zwlr_layer_shell_v1_interface.name) == 0) {
     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, wl_output_interface.name) == 0) {
-    auto wl_output = static_cast<struct wl_output *>(
-        wl_registry_bind(registry, name, &wl_output_interface, version));
-    client->outputs_.emplace_back(new struct waybar_output({wl_output, "", name, nullptr}));
-    client->handleOutput(client->outputs_.back());
   } else if (strcmp(interface, zxdg_output_manager_v1_interface.name) == 0 &&
              version >= ZXDG_OUTPUT_V1_NAME_SINCE_VERSION) {
     client->xdg_output_manager = static_cast<struct zxdg_output_manager_v1 *>(wl_registry_bind(
@@ -49,52 +46,21 @@ void waybar::Client::handleGlobal(void *data, struct wl_registry *registry, uint
 
 void waybar::Client::handleGlobalRemove(void *   data, struct wl_registry * /*registry*/,
                                         uint32_t name) {
-  auto client = static_cast<Client *>(data);
-  for (auto it = client->bars.begin(); it != client->bars.end();) {
-    if ((*it)->output->wl_name == name) {
-      auto output_name = (*it)->output->name;
-      (*it)->window.close();
-      it = client->bars.erase(it);
-      std::cout << "Bar removed from output: " + output_name << std::endl;
-    } else {
-      ++it;
-    }
-  }
-  auto it = std::find_if(client->outputs_.begin(),
-                         client->outputs_.end(),
-                         [&name](const auto &output) { return output->wl_name == name; });
-  if (it != client->outputs_.end()) {
-    zxdg_output_v1_destroy((*it)->xdg_output);
-    wl_output_destroy((*it)->output);
-    client->outputs_.erase(it);
-  }
+  // Nothing here
 }
 
 void waybar::Client::handleOutput(std::unique_ptr<struct waybar_output> &output) {
   static const struct zxdg_output_v1_listener xdgOutputListener = {
-      .logical_position = handleLogicalPosition,
-      .logical_size = handleLogicalSize,
-      .done = handleDone,
-      .name = handleName,
-      .description = handleDescription,
+      .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 *) {},
+      .name = &handleOutputName,
+      .description = [](void *, struct zxdg_output_v1 *, const char *) {},
   };
-  output->xdg_output = zxdg_output_manager_v1_get_xdg_output(xdg_output_manager, output->output);
-  zxdg_output_v1_add_listener(output->xdg_output, &xdgOutputListener, &output->wl_name);
-}
-
-void waybar::Client::handleLogicalPosition(void * /*data*/,
-                                           struct zxdg_output_v1 * /*zxdg_output_v1*/,
-                                           int32_t /*x*/, int32_t /*y*/) {
-  // Nothing here
-}
-
-void waybar::Client::handleLogicalSize(void * /*data*/, struct zxdg_output_v1 * /*zxdg_output_v1*/,
-                                       int32_t /*width*/, int32_t /*height*/) {
-  // Nothing here
-}
-
-void waybar::Client::handleDone(void * /*data*/, struct zxdg_output_v1 * /*zxdg_output_v1*/) {
-  // Nothing here
+  // owned by output->monitor; no need to destroy
+  auto wl_output = gdk_wayland_monitor_get_wl_output(output->monitor->gobj());
+  output->xdg_output.reset(zxdg_output_manager_v1_get_xdg_output(xdg_output_manager, wl_output));
+  zxdg_output_v1_add_listener(output->xdg_output.get(), &xdgOutputListener, output.get());
 }
 
 bool waybar::Client::isValidOutput(const Json::Value &                    config,
@@ -116,9 +82,9 @@ bool waybar::Client::isValidOutput(const Json::Value &                    config
   return found;
 }
 
-std::unique_ptr<struct waybar::waybar_output> &waybar::Client::getOutput(uint32_t wl_name) {
-  auto it = std::find_if(outputs_.begin(), outputs_.end(), [&wl_name](const auto &output) {
-    return output->wl_name == wl_name;
+std::unique_ptr<struct waybar::waybar_output> &waybar::Client::getOutput(void *addr) {
+  auto it = std::find_if(outputs_.begin(), outputs_.end(), [&addr](const auto &output) {
+    return output.get() == addr;
   });
   if (it == outputs_.end()) {
     throw std::runtime_error("Unable to find valid output");
@@ -141,18 +107,21 @@ std::vector<Json::Value> waybar::Client::getOutputConfigs(
   return configs;
 }
 
-void waybar::Client::handleName(void *      data, struct zxdg_output_v1 * /*xdg_output*/,
-                                const char *name) {
-  auto wl_name = *static_cast<uint32_t *>(data);
+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(wl_name);
+    auto &output = client->getOutput(data);
     output->name = name;
+    spdlog::debug("Output detected: {} ({} {})",
+                  name,
+                  output->monitor->get_manufacturer(),
+                  output->monitor->get_model());
     auto configs = client->getOutputConfigs(output);
     if (configs.empty()) {
-      wl_output_destroy(output->output);
-      zxdg_output_v1_destroy(output->xdg_output);
+      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.get(), config));
         Glib::RefPtr<Gdk::Screen> screen = client->bars.back()->window.get_screen();
@@ -165,36 +134,55 @@ void waybar::Client::handleName(void *      data, struct zxdg_output_v1 * /*xdg_
   }
 }
 
-void waybar::Client::handleDescription(void * /*data*/, struct zxdg_output_v1 * /*zxdg_output_v1*/,
-                                       const char * /*description*/) {
-  // Nothing here
+void waybar::Client::handleMonitorAdded(Glib::RefPtr<Gdk::Monitor> monitor) {
+  auto &output = outputs_.emplace_back(new struct waybar_output({monitor}));
+  handleOutput(output);
 }
 
-void waybar::Client::setupConfigs(const std::string &config, const std::string &style) {
-  config_file_ = config.empty() ? getValidPath({
-                                      "$XDG_CONFIG_HOME/waybar/config",
-                                      "$HOME/.config/waybar/config",
-                                      "$HOME/waybar/config",
-                                      "/etc/xdg/waybar/config",
-                                      "./resources/config",
+void waybar::Client::handleMonitorRemoved(Glib::RefPtr<Gdk::Monitor> monitor) {
+  spdlog::debug("Output removed: {} {}", monitor->get_manufacturer(), monitor->get_model());
+  for (auto it = bars.begin(); it != bars.end();) {
+    if ((*it)->output->monitor == monitor) {
+      auto output_name = (*it)->output->name;
+      (*it)->window.close();
+      it = bars.erase(it);
+      spdlog::info("Bar removed from output: {}", output_name);
+    } else {
+      ++it;
+    }
+  }
+  std::remove_if(outputs_.begin(), outputs_.end(), [&monitor](const auto &output) {
+    return output->monitor == monitor;
+  });
+}
+
+std::tuple<const std::string, const std::string> waybar::Client::getConfigs(
+    const std::string &config, const std::string &style) const {
+  auto config_file = config.empty() ? getValidPath({
+                                          "$XDG_CONFIG_HOME/waybar/config",
+                                          "$HOME/.config/waybar/config",
+                                          "$HOME/waybar/config",
+                                          "/etc/xdg/waybar/config",
+                                          "./resources/config",
+                                      })
+                                    : config;
+  auto css_file = style.empty() ? getValidPath({
+                                      "$XDG_CONFIG_HOME/waybar/style.css",
+                                      "$HOME/.config/waybar/style.css",
+                                      "$HOME/waybar/style.css",
+                                      "/etc/xdg/waybar/style.css",
+                                      "./resources/style.css",
                                   })
-                                : config;
-  css_file_ = style.empty() ? getValidPath({
-                                  "$XDG_CONFIG_HOME/waybar/style.css",
-                                  "$HOME/.config/waybar/style.css",
-                                  "$HOME/waybar/style.css",
-                                  "/etc/xdg/waybar/style.css",
-                                  "./resources/style.css",
-                              })
-                            : style;
-  if (css_file_.empty() || config_file_.empty()) {
+                                : style;
+  if (css_file.empty() || config_file.empty()) {
     throw std::runtime_error("Missing required resources files");
   }
-  std::cout << "Resources files: " + config_file_ + ", " + css_file_ << std::endl;
+  spdlog::info("Resources files: {}, {}", config_file, css_file);
+  return {config_file, css_file};
 }
 
-auto waybar::Client::setupConfig() -> void {
-  std::ifstream file(config_file_);
+auto waybar::Client::setupConfig(const std::string &config_file) -> void {
+  std::ifstream file(config_file);
   if (!file.is_open()) {
     throw std::runtime_error("Can't open config file");
   }
@@ -203,12 +191,12 @@ auto waybar::Client::setupConfig() -> void {
   config_ = parser.parse(str);
 }
 
-auto waybar::Client::setupCss() -> void {
+auto waybar::Client::setupCss(const std::string &css_file) -> void {
   css_provider_ = Gtk::CssProvider::create();
   style_context_ = Gtk::StyleContext::create();
 
   // Load our css file, wherever that may be hiding
-  if (!css_provider_->load_from_path(css_file_)) {
+  if (!css_provider_->load_from_path(css_file)) {
     throw std::runtime_error("Can't open style file");
   }
 }
@@ -224,31 +212,34 @@ void waybar::Client::bindInterfaces() {
   if (layer_shell == nullptr || xdg_output_manager == nullptr) {
     throw std::runtime_error("Failed to acquire required resources.");
   }
+  // add existing outputs and subscribe to updates
+  for (auto i = 0; i < gdk_display->get_n_monitors(); ++i) {
+    auto monitor = gdk_display->get_monitor(i);
+    handleMonitorAdded(monitor);
+  }
+  gdk_display->signal_monitor_added().connect(sigc::mem_fun(*this, &Client::handleMonitorAdded));
+  gdk_display->signal_monitor_removed().connect(
+      sigc::mem_fun(*this, &Client::handleMonitorRemoved));
 }
 
 int waybar::Client::main(int argc, char *argv[]) {
-  gtk_app = Gtk::Application::create(argc, argv, "fr.arouillard.waybar");
-  gdk_display = Gdk::Display::get_default();
-  if (!gdk_display) {
-    throw std::runtime_error("Can't find display");
-  }
-  if (!GDK_IS_WAYLAND_DISPLAY(gdk_display->gobj())) {
-    throw std::runtime_error("Bar need to run under Wayland");
-  }
-  wl_display = gdk_wayland_display_get_wl_display(gdk_display->gobj());
   bool        show_help = false;
   bool        show_version = false;
   std::string config;
   std::string style;
   std::string bar_id;
+  std::string log_level;
   auto        cli = clara::detail::Help(show_help) |
              clara::detail::Opt(show_version)["-v"]["--version"]("Show version") |
              clara::detail::Opt(config, "config")["-c"]["--config"]("Config path") |
              clara::detail::Opt(style, "style")["-s"]["--style"]("Style path") |
+             clara::detail::Opt(
+                 log_level,
+                 "trace|debug|info|warning|error|critical|off")["-l"]["--log-level"]("Log level") |
              clara::detail::Opt(bar_id, "id")["-b"]["--bar"]("Bar id");
   auto res = cli.parse(clara::detail::Args(argc, argv));
   if (!res) {
-    std::cerr << "Error in command line: " << res.errorMessage() << std::endl;
+    spdlog::error("Error in command line: {}", res.errorMessage());
     return 1;
   }
   if (show_help) {
@@ -259,9 +250,21 @@ int waybar::Client::main(int argc, char *argv[]) {
     std::cout << "Waybar v" << VERSION << std::endl;
     return 0;
   }
-  setupConfigs(config, style);
-  setupConfig();
-  setupCss();
+  if (!log_level.empty()) {
+    spdlog::set_level(spdlog::level::from_str(log_level));
+  }
+  gtk_app = Gtk::Application::create(argc, argv, "fr.arouillard.waybar");
+  gdk_display = Gdk::Display::get_default();
+  if (!gdk_display) {
+    throw std::runtime_error("Can't find display");
+  }
+  if (!GDK_IS_WAYLAND_DISPLAY(gdk_display->gobj())) {
+    throw std::runtime_error("Bar need to run under Wayland");
+  }
+  wl_display = gdk_wayland_display_get_wl_display(gdk_display->gobj());
+  auto [config_file, css_file] = getConfigs(config, style);
+  setupConfig(config_file);
+  setupCss(css_file);
   bindInterfaces();
   gtk_app->hold();
   gtk_app->run();

src/factory.cpp

@@ -2,14 +2,16 @@
 
 waybar::Factory::Factory(const Bar& bar, const Json::Value& config) : bar_(bar), config_(config) {}
 
-waybar::IModule* waybar::Factory::makeModule(const std::string& name) const {
+waybar::AModule* waybar::Factory::makeModule(const std::string& name) const {
   try {
     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 (ref == "battery") {
       return new waybar::modules::Battery(id, config_[name]);
     }
+#endif
 #ifdef HAVE_SWAY
     if (ref == "sway/mode") {
       return new waybar::modules::sway::Mode(id, config_[name]);
@@ -33,7 +35,10 @@ waybar::IModule* waybar::Factory::makeModule(const std::string& name) const {
     if (ref == "clock") {
       return new waybar::modules::Clock(id, config_[name]);
     }
-#ifdef HAVE_DBUSMENU
+    if (ref == "disk") {
+      return new waybar::modules::Disk(id, config_[name]);
+    }
+#if defined(HAVE_DBUSMENU) && !defined(NO_FILESYSTEM)
     if (ref == "tray") {
       return new waybar::modules::SNI::Tray(id, bar_, config_[name]);
     }
@@ -62,7 +67,7 @@ waybar::IModule* waybar::Factory::makeModule(const std::string& name) const {
       return new waybar::modules::Temperature(id, config_[name]);
     }
     if (ref.compare(0, 7, "custom/") == 0 && ref.size() > 7) {
-      return new waybar::modules::Custom(ref.substr(7), config_[name]);
+      return new waybar::modules::Custom(ref.substr(7), id, config_[name]);
     }
   } catch (const std::exception& e) {
     auto err = fmt::format("Disabling module \"{}\", {}", name, e.what());

src/main.cpp

@@ -1,5 +1,5 @@
 #include <csignal>
-#include <iostream>
+#include <spdlog/spdlog.h>
 #include "client.hpp"
 
 int main(int argc, char* argv[]) {
@@ -23,10 +23,10 @@ int main(int argc, char* argv[]) {
     delete client;
     return ret;
   } catch (const std::exception& e) {
-    std::cerr << e.what() << std::endl;
+    spdlog::error("{}", e.what());
     return 1;
   } catch (const Glib::Exception& e) {
-    std::cerr << e.what().c_str() << std::endl;
+    spdlog::error("{}", static_cast<std::string>(e.what()));
     return 1;
   }
 }

src/modules/backlight.cpp

@@ -88,12 +88,9 @@ int waybar::modules::Backlight::BacklightDev::get_max() const { return max_; }
 
 void waybar::modules::Backlight::BacklightDev::set_max(int max) { max_ = max; }
 
-waybar::modules::Backlight::Backlight(const std::string &name, const Json::Value &config)
-    : ALabel(config, "{percent}%", 2),
-      name_(name),
+waybar::modules::Backlight::Backlight(const std::string &id, const Json::Value &config)
+    : ALabel(config, "backlight", id, "{percent}%", 2),
       preferred_device_(config["device"].isString() ? config["device"].asString() : "") {
-  label_.set_name("backlight");
-
   // Get initial state
   {
     std::unique_ptr<udev, UdevDeleter> udev_check{udev_new()};
@@ -181,7 +178,7 @@ auto waybar::modules::Backlight::update() -> void {
     const auto percent = best->get_max() == 0 ? 100 : best->get_actual() * 100 / best->get_max();
     label_.set_markup(fmt::format(
         format_, fmt::arg("percent", std::to_string(percent)), fmt::arg("icon", getIcon(percent))));
-   getState(percent);
+    getState(percent);
   } else {
     if (!previous_best_.has_value()) {
       return;
@@ -213,7 +210,10 @@ void waybar::modules::Backlight::upsert_device(ForwardIt first, ForwardIt last,
   const char *name = udev_device_get_sysname(dev);
   check_nn(name);
 
-  const char *actual = udev_device_get_sysattr_value(dev, "actual_brightness");
+  const char *actual_brightness_attr =
+      strcmp(name, "amdgpu_bl0") == 0 ? "brightness" : "actual_brightness";
+
+  const char *actual = udev_device_get_sysattr_value(dev, actual_brightness_attr);
   check_nn(actual);
   const int actual_int = std::stoi(actual);
 

src/modules/battery.cpp

@@ -1,11 +1,8 @@
 #include "modules/battery.hpp"
+#include <spdlog/spdlog.h>
 
 waybar::modules::Battery::Battery(const std::string& id, const Json::Value& config)
-    : ALabel(config, "{capacity}%", 60) {
-  label_.set_name("battery");
-  if (!id.empty()) {
-    label_.get_style_context()->add_class(id);
-  }
+    : ALabel(config, "battery", id, "{capacity}%", 60) {
   getBatteries();
   fd_ = inotify_init1(IN_CLOEXEC);
   if (fd_ == -1) {
@@ -47,21 +44,21 @@ void waybar::modules::Battery::worker() {
 
 void waybar::modules::Battery::getBatteries() {
   try {
-    for (auto const& node : fs::directory_iterator(data_dir_)) {
+    for (auto& node : fs::directory_iterator(data_dir_)) {
       if (!fs::is_directory(node)) {
         continue;
       }
       auto dir_name = node.path().filename();
       auto bat_defined = config_["bat"].isString();
       if (((bat_defined && dir_name == config_["bat"].asString()) || !bat_defined) &&
-          fs::exists(node / "capacity") && fs::exists(node / "uevent") &&
-          fs::exists(node / "status")) {
-        batteries_.push_back(node);
+          fs::exists(node.path() / "capacity") && fs::exists(node.path() / "uevent") &&
+          fs::exists(node.path() / "status")) {
+        batteries_.push_back(node.path());
       }
       auto adap_defined = config_["adapter"].isString();
       if (((adap_defined && dir_name == config_["adapter"].asString()) || !adap_defined) &&
-          fs::exists(node / "online")) {
-        adapter_ = node;
+          fs::exists(node.path() / "online")) {
+        adapter_ = node.path();
       }
     }
   } catch (fs::filesystem_error& e) {
@@ -75,25 +72,53 @@ void waybar::modules::Battery::getBatteries() {
   }
 }
 
-const std::tuple<uint8_t, std::string> waybar::modules::Battery::getInfos() const {
+const std::tuple<uint8_t, float, std::string> waybar::modules::Battery::getInfos() const {
   try {
     uint16_t    total = 0;
+    uint32_t    total_power = 0;   // μW
+    uint32_t    total_energy = 0;  // μWh
+    uint32_t    total_energy_full = 0;
     std::string status = "Unknown";
     for (auto const& bat : batteries_) {
       uint16_t    capacity;
+      uint32_t    power_now;
+      uint32_t    energy_full;
+      uint32_t    energy_now;
       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;
+      auto now_path = fs::exists(bat / "charge_now") ? "charge_now" : "energy_now";
+      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") {
         status = _status;
       }
       total += capacity;
+      total_power += power_now;
+      total_energy += energy_now;
+      total_energy_full += energy_full;
+    }
+    if (!adapter_.empty() && status == "Discharging") {
+      bool online;
+      std::ifstream(adapter_ / "online") >> online;
+      if (online) {
+        status = "Plugged";
+      }
+    }
+    float time_remaining = 0;
+    if (status == "Discharging" && total_power != 0) {
+      time_remaining = (float)total_energy / total_power;
+    } else if (status == "Charging" && total_power != 0) {
+      time_remaining = -(float)(total_energy_full - total_energy) / total_power;
     }
     uint16_t capacity = total / batteries_.size();
-    return {capacity, status};
+    return {capacity, time_remaining, status};
   } catch (const std::exception& e) {
-    std::cerr << e.what() << std::endl;
-    return {0, "Unknown"};
+    spdlog::error("Battery: {}", e.what());
+    return {0, 0, "Unknown"};
   }
 }
 
@@ -104,23 +129,46 @@ const std::string waybar::modules::Battery::getAdapterStatus(uint8_t capacity) c
     if (capacity == 100) {
       return "Full";
     }
-    return online ? "Charging" : "Discharging";
+    if (online) {
+      return "Plugged";
+    }
+    return "Discharging";
   }
   return "Unknown";
 }
 
+const std::string waybar::modules::Battery::formatTimeRemaining(float hoursRemaining) {
+  hoursRemaining = std::fabs(hoursRemaining);
+  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 (config_["format-time"].isString()) {
+    format = config_["format-time"].asString();
+  }
+  return fmt::format(format, fmt::arg("H", full_hours), fmt::arg("M", minutes));
+}
+
 auto waybar::modules::Battery::update() -> void {
-  auto [capacity, status] = getInfos();
+  auto [capacity, time_remaining, status] = getInfos();
   if (status == "Unknown") {
     status = getAdapterStatus(capacity);
   }
   if (tooltipEnabled()) {
-    label_.set_tooltip_text(status);
+    std::string tooltip_text;
+    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);
   }
   std::transform(status.begin(), status.end(), status.begin(), ::tolower);
   auto format = format_;
-  auto state = getState(capacity);
-  label_.get_style_context()->remove_class(old_status_);
+  auto state = getState(capacity, true);
+  if (!old_status_.empty()) {
+    label_.get_style_context()->remove_class(old_status_);
+  }
   label_.get_style_context()->add_class(status);
   old_status_ = status;
   if (!state.empty() && config_["format-" + status + "-" + state].isString()) {
@@ -134,7 +182,9 @@ auto waybar::modules::Battery::update() -> void {
     event_box_.hide();
   } else {
     event_box_.show();
-    label_.set_markup(
-        fmt::format(format, fmt::arg("capacity", capacity), fmt::arg("icon", getIcon(capacity))));
+    label_.set_markup(fmt::format(format,
+                                  fmt::arg("capacity", capacity),
+                                  fmt::arg("icon", getIcon(capacity, state)),
+                                  fmt::arg("time", formatTimeRemaining(time_remaining))));
   }
 }

src/modules/clock.cpp

@@ -1,29 +1,21 @@
 #include "modules/clock.hpp"
+#include <time.h>
 
 waybar::modules::Clock::Clock(const std::string& id, const Json::Value& config)
-    : ALabel(config, "{:%H:%M}", 60) {
-  label_.set_name("clock");
-  if (!id.empty()) {
-    label_.get_style_context()->add_class(id);
-  }
+    : ALabel(config, "clock", id, "{:%H:%M}", 60) {
   thread_ = [this] {
     dp.emit();
     auto now = std::chrono::system_clock::now();
     auto timeout = std::chrono::floor<std::chrono::seconds>(now + interval_);
-    auto time_s = std::chrono::time_point_cast<std::chrono::seconds>(timeout);
-    auto sub_m =
-        std::chrono::duration_cast<std::chrono::seconds>(time_s.time_since_epoch()).count() %
-        interval_.count();
-    if (sub_m > 0) {
-      thread_.sleep_until(timeout - std::chrono::seconds(sub_m - 1));
-    } else {
-      thread_.sleep_until(timeout - std::chrono::seconds(sub_m));
-    }
+    auto diff = std::chrono::seconds(timeout.time_since_epoch().count() % interval_.count());
+    thread_.sleep_until(timeout - diff);
   };
 }
 
 auto waybar::modules::Clock::update() -> void {
-  auto localtime = fmt::localtime(std::time(nullptr));
+  tzset(); // Update timezone information
+  auto now = std::chrono::system_clock::now();
+  auto localtime = fmt::localtime(std::chrono::system_clock::to_time_t(now));
   auto text = fmt::format(format_, localtime);
   label_.set_markup(text);
 

src/modules/cpu.cpp

@@ -1,11 +1,8 @@
 #include "modules/cpu.hpp"
+#include <numeric>
 
 waybar::modules::Cpu::Cpu(const std::string& id, const Json::Value& config)
-    : ALabel(config, "{usage}%", 10) {
-  label_.set_name("cpu");
-  if (!id.empty()) {
-    label_.get_style_context()->add_class(id);
-  }
+    : ALabel(config, "cpu", id, "{usage}%", 10) {
   thread_ = [this] {
     dp.emit();
     thread_.sleep_for(interval_);

src/modules/custom.cpp

@@ -1,8 +1,9 @@
 #include "modules/custom.hpp"
+#include <spdlog/spdlog.h>
 
-waybar::modules::Custom::Custom(const std::string& name, const Json::Value& config)
-    : ALabel(config, "{}"), name_(name), fp_(nullptr), pid_(-1) {
-  label_.set_name("custom-" + name_);
+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()) {
     if (interval_.count() > 0) {
       delayWorker();
@@ -24,14 +25,14 @@ void waybar::modules::Custom::delayWorker() {
   thread_ = [this] {
     bool can_update = true;
     if (config_["exec-if"].isString()) {
-      auto res = waybar::util::command::exec(config_["exec-if"].asString());
+      auto res = util::command::exec(config_["exec-if"].asString());
       if (res.exit_code != 0) {
         can_update = false;
         event_box_.hide();
       }
     }
     if (can_update) {
-      output_ = waybar::util::command::exec(config_["exec"].asString());
+      output_ = util::command::exec(config_["exec"].asString());
       dp.emit();
     }
     thread_.sleep_for(interval_);
@@ -58,7 +59,7 @@ void waybar::modules::Custom::continuousWorker() {
       if (exit_code != 0) {
         output_ = {exit_code, ""};
         dp.emit();
-        std::cerr << name_ + " just stopped unexpectedly, is it endless?" << std::endl;
+        spdlog::error("{} stopped unexpectedly, is it endless?", name_);
       }
       return;
     }
@@ -73,12 +74,24 @@ void waybar::modules::Custom::continuousWorker() {
   };
 }
 
-void waybar::modules::Custom::refresh(int sig /*signal*/) {
+void waybar::modules::Custom::refresh(int sig) {
   if (sig == SIGRTMIN + config_["signal"].asInt()) {
     thread_.wake_up();
   }
 }
 
+bool waybar::modules::Custom::handleScroll(GdkEventScroll* e) {
+  auto ret = ALabel::handleScroll(e);
+  thread_.wake_up();
+  return ret;
+}
+
+bool waybar::modules::Custom::handleToggle(GdkEventButton* const& e) {
+  auto ret = ALabel::handleToggle(e);
+  thread_.wake_up();
+  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)) {
@@ -89,29 +102,31 @@ auto waybar::modules::Custom::update() -> void {
     } else {
       parseOutputRaw();
     }
-
     auto str = fmt::format(format_,
                            text_,
                            fmt::arg("alt", alt_),
                            fmt::arg("icon", getIcon(percentage_, alt_)),
                            fmt::arg("percentage", percentage_));
-    label_.set_markup(str);
-    if (tooltipEnabled()) {
-      if (text_ == tooltip_) {
-        label_.set_tooltip_text(str);
-      } else {
-        label_.set_tooltip_text(tooltip_);
+    if (str.empty()) {
+      event_box_.hide();
+    } else {
+      label_.set_markup(str);
+      if (tooltipEnabled()) {
+        if (text_ == tooltip_) {
+          label_.set_tooltip_text(str);
+        } else {
+          label_.set_tooltip_text(tooltip_);
+        }
       }
+      auto classes = label_.get_style_context()->list_classes();
+      for (auto const& c : classes) {
+        label_.get_style_context()->remove_class(c);
+      }
+      for (auto const& c : class_) {
+        label_.get_style_context()->add_class(c);
+      }
+      event_box_.show();
     }
-    auto classes = label_.get_style_context()->list_classes();
-    for (auto const& c : classes) {
-      label_.get_style_context()->remove_class(c);
-    }
-    for (auto const& c : class_) {
-      label_.get_style_context()->add_class(c);
-    }
-
-    event_box_.show();
   }
 }
 

src/modules/disk.cpp

@@ -0,0 +1,76 @@
+#include "modules/disk.hpp"
+
+using namespace waybar::util;
+
+waybar::modules::Disk::Disk(const std::string& id, const Json::Value& config)
+    : ALabel(config, "disk", id, "{}%", 30)
+    , path_("/")
+{
+  thread_ = [this] {
+    dp.emit();
+    thread_.sleep_for(interval_);
+  };
+  if (config["path"].isString()) {
+    path_ = config["path"].asString();
+  }
+}
+
+auto waybar::modules::Disk::update() -> void {
+  struct statvfs /* {
+      unsigned long  f_bsize;    // filesystem block size
+      unsigned long  f_frsize;   // fragment size
+      fsblkcnt_t     f_blocks;   // size of fs in f_frsize units
+      fsblkcnt_t     f_bfree;    // # free blocks
+      fsblkcnt_t     f_bavail;   // # free blocks for unprivileged users
+      fsfilcnt_t     f_files;    // # inodes
+      fsfilcnt_t     f_ffree;    // # free inodes
+      fsfilcnt_t     f_favail;   // # free inodes for unprivileged users
+      unsigned long  f_fsid;     // filesystem ID
+      unsigned long  f_flag;     // mount flags
+      unsigned long  f_namemax;  // maximum filename length
+  }; */ stats;
+  int err = statvfs(path_.c_str(), &stats);
+
+  /* Conky options
+    fs_bar - Bar that shows how much space is used
+    fs_free - Free space on a file system
+    fs_free_perc - Free percentage of space
+    fs_size - File system size
+    fs_used - File system used space
+  */
+
+  if (err != 0) {
+    event_box_.hide();
+    return;
+  }
+
+  auto free = pow_format(stats.f_bavail * stats.f_bsize, "B", true);
+  auto used = pow_format((stats.f_blocks - stats.f_bavail) * stats.f_bsize, "B", true);
+  auto total = pow_format(stats.f_blocks * stats.f_bsize, "B", true);
+
+  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("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()) {
+      tooltip_format = config_["tooltip-format"].asString();
+    }
+    label_.set_tooltip_text(fmt::format(tooltip_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("total", total)
+      , fmt::arg("path", path_)
+      ));
+  }
+  event_box_.show();
+}

src/modules/idle_inhibitor.cpp

@@ -3,15 +3,11 @@
 
 waybar::modules::IdleInhibitor::IdleInhibitor(const std::string& id, const Bar& bar,
                                               const Json::Value& config)
-    : ALabel(config, "{status}"),
+    : ALabel(config, "idle_inhibitor", id, "{status}"),
       bar_(bar),
       status_("deactivated"),
       idle_inhibitor_(nullptr),
       pid_(-1) {
-  label_.set_name("idle_inhibitor");
-  if (!id.empty()) {
-    label_.get_style_context()->add_class(id);
-  }
   event_box_.add_events(Gdk::BUTTON_PRESS_MASK);
   event_box_.signal_button_press_event().connect(
       sigc::mem_fun(*this, &IdleInhibitor::handleToggle));

src/modules/memory.cpp

@@ -1,11 +1,7 @@
 #include "modules/memory.hpp"
 
 waybar::modules::Memory::Memory(const std::string& id, const Json::Value& config)
-    : ALabel(config, "{}%", 30) {
-  label_.set_name("memory");
-  if (!id.empty()) {
-    label_.get_style_context()->add_class(id);
-  }
+    : ALabel(config, "memory", id, "{}%", 30) {
   thread_ = [this] {
     dp.emit();
     thread_.sleep_for(interval_);
@@ -15,10 +11,18 @@ waybar::modules::Memory::Memory(const std::string& id, const Json::Value& config
 auto waybar::modules::Memory::update() -> void {
   parseMeminfo();
   if (memtotal_ > 0 && memfree_ >= 0) {
-    int used_ram_percentage = 100 * (memtotal_ - memfree_) / memtotal_;
-    getState(used_ram_percentage);
-    label_.set_markup(fmt::format(format_, used_ram_percentage));
+    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));
     }

src/modules/mpd.cpp

@@ -1,10 +1,10 @@
 #include "modules/mpd.hpp"
 
 #include <fmt/chrono.h>
-#include <iostream>
+#include <spdlog/spdlog.h>
 
 waybar::modules::MPD::MPD(const std::string& id, const Json::Value& config)
-    : ALabel(config, "{album} - {artist} - {title}", 5),
+    : 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),
@@ -14,21 +14,16 @@ waybar::modules::MPD::MPD(const std::string& id, const Json::Value& config)
       status_(nullptr, &mpd_status_free),
       song_(nullptr, &mpd_song_free) {
   if (!config_["port"].isNull() && !config_["port"].isUInt()) {
-    std::cerr << module_name_ << ": `port` configuration should be an unsigned int" << std::endl;
+    spdlog::warn("{}: `port` configuration should be an unsigned int", module_name_);
   }
 
   if (!config_["timeout"].isNull() && !config_["timeout"].isUInt()) {
-    std::cerr << module_name_ << ": `timeout` configuration should be an unsigned int" << std::endl;
-  }
-
-  label_.set_name("mpd");
-  if (!id.empty()) {
-    label_.get_style_context()->add_class(id);
+    spdlog::warn("{}: `timeout` configuration should be an unsigned int", module_name_);
   }
 
   if (!config["server"].isNull()) {
     if (!config_["server"].isString()) {
-      std::cerr << module_name_ << "`server` configuration should be a string" << std::endl;
+      spdlog::warn("{}:`server` configuration should be a string", module_name_);
     }
     server_ = config["server"].asCString();
   }
@@ -46,12 +41,16 @@ auto waybar::modules::MPD::update() -> void {
   if (connection_ != nullptr) {
     try {
       bool wasPlaying = playing();
+      if(!wasPlaying) {
+        // Wait until the periodic_updater has stopped
+        std::lock_guard periodic_guard(periodic_lock_);
+      }
       fetchState();
       if (!wasPlaying && playing()) {
         periodic_updater().detach();
       }
     } catch (const std::exception& e) {
-      std::cerr << module_name_ + ": " + e.what() << std::endl;
+      spdlog::error("{}: {}", module_name_, e.what());
       state_ = MPD_STATE_UNKNOWN;
     }
   }
@@ -65,14 +64,14 @@ std::thread waybar::modules::MPD::event_listener() {
       try {
         if (connection_ == nullptr) {
           // Retry periodically if no connection
-          update();
+          dp.emit();
           std::this_thread::sleep_for(interval_);
         } else {
           waitForEvent();
           dp.emit();
         }
       } catch (const std::exception& e) {
-        std::cerr << module_name_ + ": " + e.what() << std::endl;
+        spdlog::warn("{}: {}", module_name_, e.what());
       }
     }
   });
@@ -80,6 +79,7 @@ std::thread waybar::modules::MPD::event_listener() {
 
 std::thread waybar::modules::MPD::periodic_updater() {
   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));
@@ -206,12 +206,12 @@ std::string waybar::modules::MPD::getStateIcon() {
   }
 
   if (connection_ == nullptr) {
-    std::cerr << module_name_ << ": Trying to fetch state icon while disconnected" << std::endl;
+    spdlog::warn("{}: Trying to fetch state icon while disconnected", module_name_);
     return "";
   }
 
   if (stopped()) {
-    std::cerr << module_name_ << ": Trying to fetch state icon while stopped" << std::endl;
+    spdlog::warn("{}: Trying to fetch state icon while stopped", module_name_);
     return "";
   }
 
@@ -228,7 +228,7 @@ std::string waybar::modules::MPD::getOptionIcon(std::string optionName, bool act
   }
 
   if (connection_ == nullptr) {
-    std::cerr << module_name_ << ": Trying to fetch option icon while disconnected" << std::endl;
+    spdlog::warn("{}: Trying to fetch option icon while disconnected", module_name_);
     return "";
   }
 
@@ -251,7 +251,7 @@ void waybar::modules::MPD::tryConnect() {
       unique_connection(mpd_connection_new(server_, port_, timeout_), &mpd_connection_free);
 
   if (connection_ == nullptr || alternate_connection_ == nullptr) {
-    std::cerr << module_name_ << ": Failed to connect to MPD" << std::endl;
+    spdlog::error("{}: Failed to connect to MPD", module_name_);
     connection_.reset();
     alternate_connection_.reset();
     return;
@@ -259,9 +259,9 @@ void waybar::modules::MPD::tryConnect() {
 
   try {
     checkErrors(connection_.get());
-    std::cerr << module_name_ << ": Connected to MPD" << std::endl;
+    spdlog::info("{}: Connected to MPD", module_name_);
   } catch (std::runtime_error& e) {
-    std::cerr << module_name_ << ": Failed to connect to MPD: " << e.what() << std::endl;
+    spdlog::error("{}: Failed to connect to MPD: {}", module_name_, e.what());
     connection_.reset();
     alternate_connection_.reset();
   }
@@ -302,7 +302,7 @@ void waybar::modules::MPD::waitForEvent() {
   // 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_PLAYLIST))) {
+          conn, static_cast<mpd_idle>(MPD_IDLE_PLAYER | MPD_IDLE_OPTIONS | MPD_IDLE_QUEUE))) {
     checkErrors(conn);
     return;
   }
@@ -311,6 +311,10 @@ void waybar::modules::MPD::waitForEvent() {
   // 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);
 

src/modules/network.cpp

@@ -1,33 +1,114 @@
 #include "modules/network.hpp"
+#include <spdlog/spdlog.h>
 #include <sys/eventfd.h>
+#include <fstream>
+#include "util/format.hpp"
+
+
+namespace {
+
+using namespace waybar::util;
+
+constexpr const char *NETSTAT_FILE =
+    "/proc/net/netstat";  // std::ifstream does not take std::string_view as param
+constexpr std::string_view BANDWIDTH_CATEGORY = "IpExt";
+constexpr std::string_view BANDWIDTH_DOWN_TOTAL_KEY = "InOctets";
+constexpr std::string_view BANDWIDTH_UP_TOTAL_KEY = "OutOctets";
+
+std::ifstream                     netstat(NETSTAT_FILE);
+std::optional<unsigned long long> read_netstat(std::string_view category, std::string_view key) {
+  if (!netstat) {
+    spdlog::warn("Failed to open netstat file {}", NETSTAT_FILE);
+    return {};
+  }
+  netstat.seekg(std::ios_base::beg);
+
+  // finding corresponding line (category)
+  // looks into the file for the first line starting by the 'category' string
+  auto starts_with = [](const std::string &str, std::string_view start) {
+    return start == std::string_view{str.data(), std::min(str.size(), start.size())};
+  };
+
+  std::string read;
+  while (std::getline(netstat, read) && !starts_with(read, category))
+    ;
+  if (!starts_with(read, category)) {
+    spdlog::warn("Category '{}' not found in netstat file {}", category, NETSTAT_FILE);
+    return {};
+  }
+
+  // finding corresponding column (key)
+  // looks into the fetched line for the first word (space separated) equal to 'key'
+  int  index = 0;
+  auto r_it = read.begin();
+  auto k_it = key.begin();
+  while (k_it != key.end() && r_it != read.end()) {
+    if (*r_it != *k_it) {
+      r_it = std::find(r_it, read.end(), ' ');
+      if (r_it != read.end()) {
+        ++r_it;
+      }
+      k_it = key.begin();
+      ++index;
+    } else {
+      ++r_it;
+      ++k_it;
+    }
+  }
+
+  if (r_it == read.end() && k_it != key.end()) {
+    spdlog::warn(
+        "Key '{}' not found in category '{}' of netstat file {}", key, category, NETSTAT_FILE);
+    return {};
+  }
+
+  // finally accessing value
+  // accesses the line right under the fetched one
+  std::getline(netstat, read);
+  assert(starts_with(read, category));
+  std::istringstream iss(read);
+  while (index--) {
+    std::getline(iss, read, ' ');
+  }
+  unsigned long long value;
+  iss >> value;
+  return value;
+}
+}  // namespace
 
 waybar::modules::Network::Network(const std::string &id, const Json::Value &config)
-    : ALabel(config, "{ifname}", 60),
-      family_(AF_INET),
+    : ALabel(config, "network", id, "{ifname}", 60),
+      ifid_(-1),
+      family_(config["family"] == "ipv6" ? AF_INET6 : AF_INET),
       efd_(-1),
       ev_fd_(-1),
       cidr_(-1),
       signal_strength_dbm_(0),
-      signal_strength_(0) {
-  label_.set_name("network");
-  if (!id.empty()) {
-    label_.get_style_context()->add_class(id);
-  }
-  createInfoSocket();
-  createEventSocket();
-  if (config_["interface"].isString()) {
-    ifid_ = if_nametoindex(config_["interface"].asCString());
-    ifname_ = config_["interface"].asString();
-    if (ifid_ <= 0) {
-      throw std::runtime_error("Can't found network interface");
-    }
+      signal_strength_(0),
+      frequency_(0) {
+  auto down_octets = read_netstat(BANDWIDTH_CATEGORY, BANDWIDTH_DOWN_TOTAL_KEY);
+  auto up_octets = read_netstat(BANDWIDTH_CATEGORY, BANDWIDTH_UP_TOTAL_KEY);
+  if (down_octets) {
+    bandwidth_down_total_ = *down_octets;
   } else {
-    ifid_ = getExternalInterface();
-    if (ifid_ > 0) {
-      char ifname[IF_NAMESIZE];
-      if_indextoname(ifid_, ifname);
-      ifname_ = ifname;
-    }
+    bandwidth_down_total_ = 0;
+  }
+
+  if (up_octets) {
+    bandwidth_up_total_ = *up_octets;
+  } else {
+    bandwidth_up_total_ = 0;
+  }
+
+  createEventSocket();
+  createInfoSocket();
+  auto default_iface = getPreferredIface(-1, false);
+  if (default_iface != -1) {
+    ifid_ = default_iface;
+    char ifname[IF_NAMESIZE];
+    if_indextoname(default_iface, ifname);
+    ifname_ = ifname;
+    getInterfaceAddress();
   }
   dp.emit();
   worker();
@@ -42,39 +123,45 @@ waybar::modules::Network::~Network() {
   if (efd_ > -1) {
     close(efd_);
   }
-  if (info_sock_ != nullptr) {
-    nl_socket_drop_membership(info_sock_, RTMGRP_LINK);
-    nl_socket_drop_membership(info_sock_, RTMGRP_IPV4_IFADDR);
-    nl_close(info_sock_);
-    nl_socket_free(info_sock_);
+  if (ev_sock_ != nullptr) {
+    nl_socket_drop_membership(ev_sock_, RTNLGRP_LINK);
+    if (family_ == AF_INET) {
+      nl_socket_drop_membership(ev_sock_, RTNLGRP_IPV4_IFADDR);
+    } else {
+      nl_socket_drop_membership(ev_sock_, RTNLGRP_IPV6_IFADDR);
+    }
+    nl_close(ev_sock_);
+    nl_socket_free(ev_sock_);
   }
-  if (sk_ != nullptr) {
-    nl_close(sk_);
-    nl_socket_free(sk_);
+  if (sock_ != nullptr) {
+    nl_close(sock_);
+    nl_socket_free(sock_);
   }
 }
 
-void waybar::modules::Network::createInfoSocket() {
-  info_sock_ = nl_socket_alloc();
-  if (nl_connect(info_sock_, NETLINK_ROUTE) != 0) {
+void waybar::modules::Network::createEventSocket() {
+  ev_sock_ = nl_socket_alloc();
+  nl_socket_disable_seq_check(ev_sock_);
+  nl_socket_modify_cb(ev_sock_, NL_CB_VALID, NL_CB_CUSTOM, handleEvents, this);
+  auto groups = RTMGRP_LINK | (family_ == AF_INET ? RTMGRP_IPV4_IFADDR : RTMGRP_IPV6_IFADDR);
+  nl_join_groups(ev_sock_, groups);  // Deprecated
+  if (nl_connect(ev_sock_, NETLINK_ROUTE) != 0) {
     throw std::runtime_error("Can't connect network socket");
   }
-  if (nl_socket_add_membership(info_sock_, RTMGRP_LINK) != 0) {
-    throw std::runtime_error("Can't add membership");
+  nl_socket_add_membership(ev_sock_, RTNLGRP_LINK);
+  if (family_ == AF_INET) {
+    nl_socket_add_membership(ev_sock_, RTNLGRP_IPV4_IFADDR);
+  } else {
+    nl_socket_add_membership(ev_sock_, RTNLGRP_IPV6_IFADDR);
   }
-  if (nl_socket_add_membership(info_sock_, RTMGRP_IPV4_IFADDR) != 0) {
-    throw std::runtime_error("Can't add membership");
-  }
-  nl_socket_disable_seq_check(info_sock_);
-  nl_socket_set_nonblocking(info_sock_);
-  nl_socket_modify_cb(info_sock_, NL_CB_VALID, NL_CB_CUSTOM, handleEvents, this);
   efd_ = epoll_create1(EPOLL_CLOEXEC);
   if (efd_ < 0) {
     throw std::runtime_error("Can't create epoll");
   }
   {
     ev_fd_ = eventfd(0, EFD_NONBLOCK);
-    struct epoll_event event = {0};
+    struct epoll_event event;
+    memset(&event, 0, sizeof(event));
     event.events = EPOLLIN | EPOLLET;
     event.data.fd = ev_fd_;
     if (epoll_ctl(efd_, EPOLL_CTL_ADD, ev_fd_, &event) == -1) {
@@ -82,8 +169,9 @@ void waybar::modules::Network::createInfoSocket() {
     }
   }
   {
-    auto               fd = nl_socket_get_fd(info_sock_);
-    struct epoll_event event = {0};
+    auto               fd = nl_socket_get_fd(ev_sock_);
+    struct epoll_event event;
+    memset(&event, 0, sizeof(event));
     event.events = EPOLLIN | EPOLLET | EPOLLRDHUP;
     event.data.fd = fd;
     if (epoll_ctl(efd_, EPOLL_CTL_ADD, fd, &event) == -1) {
@@ -92,15 +180,15 @@ void waybar::modules::Network::createInfoSocket() {
   }
 }
 
-void waybar::modules::Network::createEventSocket() {
-  sk_ = nl_socket_alloc();
-  if (genl_connect(sk_) != 0) {
+void waybar::modules::Network::createInfoSocket() {
+  sock_ = nl_socket_alloc();
+  if (genl_connect(sock_) != 0) {
     throw std::runtime_error("Can't connect to netlink socket");
   }
-  if (nl_socket_modify_cb(sk_, NL_CB_VALID, NL_CB_CUSTOM, handleScan, this) < 0) {
+  if (nl_socket_modify_cb(sock_, NL_CB_VALID, NL_CB_CUSTOM, handleScan, this) < 0) {
     throw std::runtime_error("Can't set callback");
   }
-  nl80211_id_ = genl_ctrl_resolve(sk_, "nl80211");
+  nl80211_id_ = genl_ctrl_resolve(sock_, "nl80211");
   if (nl80211_id_ < 0) {
     throw std::runtime_error("Can't resolve nl80211 interface");
   }
@@ -108,114 +196,123 @@ void waybar::modules::Network::createEventSocket() {
 
 void waybar::modules::Network::worker() {
   thread_timer_ = [this] {
-    if (ifid_ > 0) {
-      getInfo();
-      dp.emit();
+    {
+      std::lock_guard<std::mutex> lock(mutex_);
+      if (ifid_ > 0) {
+        getInfo();
+        dp.emit();
+      }
     }
     thread_timer_.sleep_for(interval_);
   };
-  std::array<struct epoll_event, EPOLL_MAX> events{};
-  thread_ = [this, &events] {
+  thread_ = [this] {
+    std::array<struct epoll_event, EPOLL_MAX> events{};
+
     int ec = epoll_wait(efd_, events.data(), EPOLL_MAX, -1);
     if (ec > 0) {
       for (auto i = 0; i < ec; i++) {
-        if (events[i].data.fd == nl_socket_get_fd(info_sock_)) {
-          nl_recvmsgs_default(info_sock_);
-        } else {
+        if (events[i].data.fd != nl_socket_get_fd(ev_sock_) || nl_recvmsgs_default(ev_sock_) < 0) {
           thread_.stop();
           break;
         }
       }
-    } else if (ec == -1) {
-      thread_.stop();
     }
   };
 }
 
+const std::string waybar::modules::Network::getNetworkState() const {
+  if (ifid_ == -1) return "disconnected";
+  if (ipaddr_.empty()) return "linked";
+  if (essid_.empty()) return "ethernet";
+  return "wifi";
+}
+
 auto waybar::modules::Network::update() -> void {
-  std::string connectiontype;
-  std::string tooltip_format = "";
-  if (config_["tooltip-format"].isString()) {
-    tooltip_format = config_["tooltip-format"].asString();
+  std::lock_guard<std::mutex> lock(mutex_);
+  std::string                 tooltip_format;
+  auto down_octets = read_netstat(BANDWIDTH_CATEGORY, BANDWIDTH_DOWN_TOTAL_KEY);
+  auto up_octets = read_netstat(BANDWIDTH_CATEGORY, BANDWIDTH_UP_TOTAL_KEY);
+
+  unsigned long long bandwidth_down = 0;
+  if (down_octets) {
+    bandwidth_down = *down_octets - bandwidth_down_total_;
+    bandwidth_down_total_ = *down_octets;
   }
-  if (ifid_ <= 0 || ipaddr_.empty()) {
-    if (config_["format-disconnected"].isString()) {
-      default_format_ = config_["format-disconnected"].asString();
-    }
-    if (config_["tooltip-format-disconnected"].isString()) {
-      tooltip_format = config_["tooltip-format-disconnected"].asString();
-    }
-    label_.get_style_context()->add_class("disconnected");
-    connectiontype = "disconnected";
-  } else {
-    if (essid_.empty()) {
-      if (config_["format-ethernet"].isString()) {
-        default_format_ = config_["format-ethernet"].asString();
-      }
-      if (config_["tooltip-format-ethernet"].isString()) {
-        tooltip_format = config_["tooltip-format-ethernet"].asString();
-      }
-      connectiontype = "ethernet";
-    } else {
-      if (config_["format-wifi"].isString()) {
-        default_format_ = config_["format-wifi"].asString();
-      }
-      if (config_["tooltip-format-wifi"].isString()) {
-        tooltip_format = config_["tooltip-format-wifi"].asString();
-      }
-      connectiontype = "wifi";
-    }
-    label_.get_style_context()->remove_class("disconnected");
+
+  unsigned long long bandwidth_up = 0;
+  if (up_octets) {
+    bandwidth_up = *up_octets - bandwidth_up_total_;
+    bandwidth_up_total_ = *up_octets;
   }
   if (!alt_) {
+    auto state = getNetworkState();
+    if (!state_.empty() && label_.get_style_context()->has_class(state_)) {
+      label_.get_style_context()->remove_class(state_);
+    }
+    if (config_["format-" + state].isString()) {
+      default_format_ = config_["format-" + state].asString();
+    }
+    if (config_["tooltip-format-" + state].isString()) {
+      tooltip_format = config_["tooltip-format-" + state].asString();
+    }
+    if (!label_.get_style_context()->has_class(state)) {
+      label_.get_style_context()->add_class(state);
+    }
     format_ = default_format_;
+    state_ = state;
   }
   getState(signal_strength_);
-  auto text = fmt::format(format_,
-                          fmt::arg("essid", essid_),
-                          fmt::arg("signaldBm", signal_strength_dbm_),
-                          fmt::arg("signalStrength", signal_strength_),
-                          fmt::arg("ifname", ifname_),
-                          fmt::arg("netmask", netmask_),
-                          fmt::arg("ipaddr", ipaddr_),
-                          fmt::arg("cidr", cidr_),
-                          fmt::arg("icon", getIcon(signal_strength_, connectiontype)));
-  label_.set_markup(text);
+
+  auto text = fmt::format(
+      format_,
+      fmt::arg("essid", essid_),
+      fmt::arg("signaldBm", signal_strength_dbm_),
+      fmt::arg("signalStrength", signal_strength_),
+      fmt::arg("ifname", ifname_),
+      fmt::arg("netmask", netmask_),
+      fmt::arg("ipaddr", ipaddr_),
+      fmt::arg("cidr", cidr_),
+      fmt::arg("frequency", frequency_),
+      fmt::arg("icon", getIcon(signal_strength_, state_)),
+      fmt::arg("bandwidthDownBits", pow_format(bandwidth_down * 8ull / interval_.count(), "b/s")),
+      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()) {
+    label_.set_markup(text);
+  }
   if (tooltipEnabled()) {
+    if (tooltip_format.empty() && config_["tooltip-format"].isString()) {
+      tooltip_format = config_["tooltip-format"].asString();
+    }
     if (!tooltip_format.empty()) {
-      auto tooltip_text = fmt::format(tooltip_format,
-                                      fmt::arg("essid", essid_),
-                                      fmt::arg("signaldBm", signal_strength_dbm_),
-                                      fmt::arg("signalStrength", signal_strength_),
-                                      fmt::arg("ifname", ifname_),
-                                      fmt::arg("netmask", netmask_),
-                                      fmt::arg("ipaddr", ipaddr_),
-                                      fmt::arg("cidr", cidr_),
-                                      fmt::arg("icon", getIcon(signal_strength_, connectiontype)));
-      label_.set_tooltip_text(tooltip_text);
-    } else {
+      auto tooltip_text = fmt::format(
+          tooltip_format,
+          fmt::arg("essid", essid_),
+          fmt::arg("signaldBm", signal_strength_dbm_),
+          fmt::arg("signalStrength", signal_strength_),
+          fmt::arg("ifname", ifname_),
+          fmt::arg("netmask", netmask_),
+          fmt::arg("ipaddr", ipaddr_),
+          fmt::arg("cidr", cidr_),
+          fmt::arg("frequency", frequency_),
+          fmt::arg("icon", getIcon(signal_strength_, state_)),
+          fmt::arg("bandwidthDownBits",
+                   pow_format(bandwidth_down * 8ull / interval_.count(), "b/s")),
+          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) {
+        label_.set_tooltip_text(tooltip_text);
+      }
+    } else if (label_.get_tooltip_text() != text) {
       label_.set_tooltip_text(text);
     }
   }
 }
 
-void waybar::modules::Network::disconnected() {
-  essid_.clear();
-  signal_strength_dbm_ = 0;
-  signal_strength_ = 0;
-  ipaddr_.clear();
-  netmask_.clear();
-  cidr_ = 0;
-  if (!config_["interface"].isString()) {
-    ifname_.clear();
-    ifid_ = -1;
-  }
-  // Need to wait otherwise we'll have the same information
-  thread_.sleep_for(std::chrono::seconds(1));
-}
-
 // Based on https://gist.github.com/Yawning/c70d804d4b8ae78cc698
-int waybar::modules::Network::getExternalInterface() {
+int waybar::modules::Network::getExternalInterface(int skip_idx) const {
   static const uint32_t route_buffer_size = 8192;
   struct nlmsghdr *     hdr = nullptr;
   struct rtmsg *        rt = nullptr;
@@ -325,7 +422,7 @@ int waybar::modules::Network::getExternalInterface() {
       /* If this is the default route, and we know the interface index,
        * we can stop parsing this message.
        */
-      if (has_gateway && !has_destination && temp_idx != -1) {
+      if (has_gateway && !has_destination && temp_idx != -1 && temp_idx != skip_idx) {
         ifidx = temp_idx;
         break;
       }
@@ -339,96 +436,207 @@ out:
 void waybar::modules::Network::getInterfaceAddress() {
   unsigned int    cidrRaw;
   struct ifaddrs *ifaddr, *ifa;
-  ipaddr_.clear();
-  netmask_.clear();
   cidr_ = 0;
   int success = getifaddrs(&ifaddr);
-  if (success == 0) {
-    ifa = ifaddr;
-    while (ifa != nullptr && ipaddr_.empty() && netmask_.empty()) {
-      if (ifa->ifa_addr != nullptr && ifa->ifa_addr->sa_family == family_) {
-        if (strcmp(ifa->ifa_name, ifname_.c_str()) == 0) {
-          ipaddr_ = inet_ntoa(((struct sockaddr_in *)ifa->ifa_addr)->sin_addr);
-          netmask_ = inet_ntoa(((struct sockaddr_in *)ifa->ifa_netmask)->sin_addr);
-          cidrRaw = ((struct sockaddr_in *)(ifa->ifa_netmask))->sin_addr.s_addr;
-          unsigned int cidr = 0;
-          while (cidrRaw) {
-            cidr += cidrRaw & 1;
-            cidrRaw >>= 1;
-          }
-          cidr_ = cidr;
-        }
-      }
-      ifa = ifa->ifa_next;
-    }
-    freeifaddrs(ifaddr);
+  if (success != 0) {
+    return;
   }
+  ifa = ifaddr;
+  while (ifa != nullptr) {
+    if (ifa->ifa_addr != nullptr && ifa->ifa_addr->sa_family == family_ &&
+        ifa->ifa_name == ifname_) {
+      char ipaddr[INET6_ADDRSTRLEN];
+      ipaddr_ = inet_ntop(family_,
+                          &reinterpret_cast<struct sockaddr_in *>(ifa->ifa_addr)->sin_addr,
+                          ipaddr,
+                          INET6_ADDRSTRLEN);
+      char netmask[INET6_ADDRSTRLEN];
+      auto net_addr = reinterpret_cast<struct sockaddr_in *>(ifa->ifa_netmask);
+      netmask_ = inet_ntop(family_, &net_addr->sin_addr, netmask, INET6_ADDRSTRLEN);
+      cidrRaw = net_addr->sin_addr.s_addr;
+      unsigned int cidr = 0;
+      while (cidrRaw) {
+        cidr += cidrRaw & 1;
+        cidrRaw >>= 1;
+      }
+      cidr_ = cidr;
+      break;
+    }
+    ifa = ifa->ifa_next;
+  }
+  freeifaddrs(ifaddr);
 }
 
-int waybar::modules::Network::netlinkRequest(void *req, uint32_t reqlen, uint32_t groups) {
+int waybar::modules::Network::netlinkRequest(void *req, uint32_t reqlen, uint32_t groups) const {
   struct sockaddr_nl sa = {};
   sa.nl_family = AF_NETLINK;
   sa.nl_groups = groups;
   struct iovec  iov = {req, reqlen};
-  struct msghdr msg = {&sa, sizeof(sa), &iov, 1, nullptr, 0, 0};
-  return sendmsg(nl_socket_get_fd(info_sock_), &msg, 0);
+  struct msghdr msg = {
+      .msg_name = &sa,
+      .msg_namelen = sizeof(sa),
+      .msg_iov = &iov,
+      .msg_iovlen = 1,
+  };
+  return sendmsg(nl_socket_get_fd(ev_sock_), &msg, 0);
 }
 
-int waybar::modules::Network::netlinkResponse(void *resp, uint32_t resplen, uint32_t groups) {
+int waybar::modules::Network::netlinkResponse(void *resp, uint32_t resplen, uint32_t groups) const {
   struct sockaddr_nl sa = {};
   sa.nl_family = AF_NETLINK;
   sa.nl_groups = groups;
   struct iovec  iov = {resp, resplen};
-  struct msghdr msg = {&sa, sizeof(sa), &iov, 1, nullptr, 0, 0};
-  auto          ret = recvmsg(nl_socket_get_fd(info_sock_), &msg, 0);
+  struct msghdr msg = {
+      .msg_name = &sa,
+      .msg_namelen = sizeof(sa),
+      .msg_iov = &iov,
+      .msg_iovlen = 1,
+  };
+  auto ret = recvmsg(nl_socket_get_fd(ev_sock_), &msg, 0);
   if (msg.msg_flags & MSG_TRUNC) {
     return -1;
   }
   return ret;
 }
 
-int waybar::modules::Network::handleEvents(struct nl_msg *msg, void *data) {
-  int  ret = 0;
-  auto net = static_cast<waybar::modules::Network *>(data);
-  bool need_update = false;
-  for (nlmsghdr *nh = nlmsg_hdr(msg); NLMSG_OK(nh, ret); nh = NLMSG_NEXT(nh, ret)) {
-    if (nh->nlmsg_type == RTM_NEWADDR) {
-      need_update = true;
+bool waybar::modules::Network::checkInterface(struct ifinfomsg *rtif, std::string name) {
+  if (config_["interface"].isString()) {
+    return config_["interface"].asString() == name ||
+           wildcardMatch(config_["interface"].asString(), name);
+  }
+  // getExternalInterface may need some delay to detect external interface
+  for (uint8_t tries = 0; tries < MAX_RETRY; tries += 1) {
+    auto external_iface = getExternalInterface();
+    if (external_iface > 0) {
+      return external_iface == rtif->ifi_index;
     }
-    if (nh->nlmsg_type < RTM_NEWADDR) {
-      auto rtif = static_cast<struct ifinfomsg *>(NLMSG_DATA(nh));
-      if (rtif->ifi_index == static_cast<int>(net->ifid_)) {
-        need_update = true;
-        if (!(rtif->ifi_flags & IFF_RUNNING)) {
-          net->disconnected();
-          net->dp.emit();
-          return NL_SKIP;
+    std::this_thread::sleep_for(std::chrono::milliseconds(500));
+  }
+  return false;
+}
+
+int waybar::modules::Network::getPreferredIface(int skip_idx, bool wait) const {
+  int ifid = -1;
+  if (config_["interface"].isString()) {
+    ifid = if_nametoindex(config_["interface"].asCString());
+    if (ifid > 0) {
+      return ifid;
+    } else {
+      // Try with wildcard
+      struct ifaddrs *ifaddr, *ifa;
+      int             success = getifaddrs(&ifaddr);
+      if (success != 0) {
+        return -1;
+      }
+      ifa = ifaddr;
+      ifid = -1;
+      while (ifa != nullptr) {
+        if (wildcardMatch(config_["interface"].asString(), ifa->ifa_name)) {
+          ifid = if_nametoindex(ifa->ifa_name);
+          break;
         }
+        ifa = ifa->ifa_next;
       }
+      freeifaddrs(ifaddr);
+      return ifid;
     }
-    if (need_update) break;
   }
-  if (net->ifid_ <= 0 && !net->config_["interface"].isString()) {
-    for (uint8_t i = 0; i < MAX_RETRY; i += 1) {
-      net->ifid_ = net->getExternalInterface();
-      if (net->ifid_ > 0) {
-        break;
-      }
-      // Need to wait before get external interface
-      net->thread_.sleep_for(std::chrono::seconds(1));
+  // getExternalInterface may need some delay to detect external interface
+  for (uint8_t tries = 0; tries < MAX_RETRY; tries += 1) {
+    ifid = getExternalInterface(skip_idx);
+    if (ifid > 0) {
+      return ifid;
     }
-    if (net->ifid_ > 0) {
-      char ifname[IF_NAMESIZE];
-      if_indextoname(net->ifid_, ifname);
+    if (wait) {
+      std::this_thread::sleep_for(std::chrono::milliseconds(500));
+    }
+  }
+  return -1;
+}
+
+void waybar::modules::Network::clearIface() {
+  essid_.clear();
+  ipaddr_.clear();
+  netmask_.clear();
+  cidr_ = 0;
+  signal_strength_dbm_ = 0;
+  signal_strength_ = 0;
+  frequency_ = 0;
+}
+
+void waybar::modules::Network::checkNewInterface(struct ifinfomsg *rtif) {
+  auto new_iface = getPreferredIface(rtif->ifi_index);
+  if (new_iface != -1) {
+    ifid_ = new_iface;
+    char ifname[IF_NAMESIZE];
+    if_indextoname(new_iface, ifname);
+    ifname_ = ifname;
+    getInterfaceAddress();
+    thread_timer_.wake_up();
+  } else {
+    ifid_ = -1;
+    dp.emit();
+  }
+}
+
+int waybar::modules::Network::handleEvents(struct nl_msg *msg, void *data) {
+  auto                        net = static_cast<waybar::modules::Network *>(data);
+  std::lock_guard<std::mutex> lock(net->mutex_);
+  auto                        nh = nlmsg_hdr(msg);
+  auto                        ifi = static_cast<struct ifinfomsg *>(NLMSG_DATA(nh));
+  if (nh->nlmsg_type == RTM_DELADDR) {
+    // Check for valid interface
+    if (ifi->ifi_index == net->ifid_) {
+      net->ipaddr_.clear();
+      net->netmask_.clear();
+      net->cidr_ = 0;
+      if (!(ifi->ifi_flags & IFF_RUNNING)) {
+        net->clearIface();
+        // Check for a new interface and get info
+        net->checkNewInterface(ifi);
+      } else {
+        net->dp.emit();
+      }
+      return NL_OK;
+    }
+  } else if (nh->nlmsg_type == RTM_NEWLINK || nh->nlmsg_type == RTM_DELLINK) {
+    char ifname[IF_NAMESIZE];
+    if_indextoname(ifi->ifi_index, ifname);
+    // Check for valid interface
+    if (ifi->ifi_index != net->ifid_ && net->checkInterface(ifi, ifname)) {
       net->ifname_ = ifname;
-      need_update = true;
+      net->ifid_ = ifi->ifi_index;
+      // Get Iface and WIFI info
+      net->getInterfaceAddress();
+      net->thread_timer_.wake_up();
+      return NL_OK;
+    } else if (ifi->ifi_index == net->ifid_ &&
+               (!(ifi->ifi_flags & IFF_RUNNING) || !(ifi->ifi_flags & IFF_UP) ||
+                !net->checkInterface(ifi, ifname))) {
+      net->clearIface();
+      // Check for a new interface and get info
+      net->checkNewInterface(ifi);
+      return NL_OK;
     }
-  }
-  if (need_update) {
-    if (net->ifid_ > 0) {
-      net->getInfo();
+  } else {
+    char ifname[IF_NAMESIZE];
+    if_indextoname(ifi->ifi_index, ifname);
+    // Auto detected network can also be assigned here
+    if (ifi->ifi_index != net->ifid_ && net->checkInterface(ifi, ifname)) {
+      // If iface is different, clear data
+      if (ifi->ifi_index != net->ifid_) {
+        net->clearIface();
+      }
+      net->ifname_ = ifname;
+      net->ifid_ = ifi->ifi_index;
+    }
+    // Check for valid interface
+    if (ifi->ifi_index == net->ifid_) {
+      // Get Iface and WIFI info
+      net->getInterfaceAddress();
+      net->thread_timer_.wake_up();
+      return NL_OK;
     }
-    net->dp.emit();
   }
   return NL_SKIP;
 }
@@ -464,12 +672,11 @@ int waybar::modules::Network::handleScan(struct nl_msg *msg, void *data) {
   }
   net->parseEssid(bss);
   net->parseSignal(bss);
-  // TODO(someone): parse quality
-  return NL_SKIP;
+  net->parseFreq(bss);
+  return NL_OK;
 }
 
 void waybar::modules::Network::parseEssid(struct nlattr **bss) {
-  essid_.clear();
   if (bss[NL80211_BSS_INFORMATION_ELEMENTS] != nullptr) {
     auto       ies = static_cast<char *>(nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]));
     auto       ies_len = nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
@@ -496,14 +703,22 @@ void waybar::modules::Network::parseSignal(struct nlattr **bss) {
     // WiFi-hardware usually operates in the range -90 to -20dBm.
     const int hardwareMax = -20;
     const int hardwareMin = -90;
-    signal_strength_ =
-        ((signal_strength_dbm_ - hardwareMin) / double{hardwareMax - hardwareMin}) * 100;
+    const int strength =
+      ((signal_strength_dbm_ - hardwareMin) / double{hardwareMax - hardwareMin}) * 100;
+    signal_strength_ = std::clamp(strength, 0, 100);
   }
   if (bss[NL80211_BSS_SIGNAL_UNSPEC] != nullptr) {
     signal_strength_ = nla_get_u8(bss[NL80211_BSS_SIGNAL_UNSPEC]);
   }
 }
 
+void waybar::modules::Network::parseFreq(struct nlattr **bss) {
+  if (bss[NL80211_BSS_FREQUENCY] != nullptr) {
+    // in MHz
+    frequency_ = nla_get_u32(bss[NL80211_BSS_FREQUENCY]);
+  }
+}
+
 bool waybar::modules::Network::associatedOrJoined(struct nlattr **bss) {
   if (bss[NL80211_BSS_STATUS] == nullptr) {
     return false;
@@ -520,7 +735,6 @@ bool waybar::modules::Network::associatedOrJoined(struct nlattr **bss) {
 }
 
 auto waybar::modules::Network::getInfo() -> void {
-  getInterfaceAddress();
   struct nl_msg *nl_msg = nlmsg_alloc();
   if (nl_msg == nullptr) {
     return;
@@ -532,5 +746,45 @@ auto waybar::modules::Network::getInfo() -> void {
     nlmsg_free(nl_msg);
     return;
   }
-  nl_send_sync(sk_, nl_msg);
+  nl_send_sync(sock_, nl_msg);
+}
+
+// https://gist.github.com/rressi/92af77630faf055934c723ce93ae2495
+bool waybar::modules::Network::wildcardMatch(const std::string &pattern,
+                                             const std::string &text) const {
+  auto P = int(pattern.size());
+  auto T = int(text.size());
+
+  auto p = 0, fallback_p = -1;
+  auto t = 0, fallback_t = -1;
+
+  while (t < T) {
+    // Wildcard match:
+    if (p < P && pattern[p] == '*') {
+      fallback_p = p++;  // starting point after failures
+      fallback_t = t;    // starting point after failures
+    }
+
+    // Simple match:
+    else if (p < P && (pattern[p] == '?' || pattern[p] == text[t])) {
+      p++;
+      t++;
+    }
+
+    // Failure, fall back just after last matched '*':
+    else if (fallback_p >= 0) {
+      p = fallback_p + 1;  // position just after last matched '*"
+      t = ++fallback_t;    // re-try to match text from here
+    }
+
+    // There were no '*' before, so we fail here:
+    else {
+      return false;
+    }
+  }
+
+  // Consume all '*' at the end of pattern:
+  while (p < P && pattern[p] == '*') p++;
+
+  return p == P;
 }

src/modules/pulseaudio.cpp

@@ -1,19 +1,16 @@
 #include "modules/pulseaudio.hpp"
-#include <array>
 
 waybar::modules::Pulseaudio::Pulseaudio(const std::string &id, const Json::Value &config)
-    : ALabel(config, "{volume}%"),
+    : ALabel(config, "pulseaudio", id, "{volume}%"),
       mainloop_(nullptr),
       mainloop_api_(nullptr),
       context_(nullptr),
       sink_idx_(0),
       volume_(0),
       muted_(false),
-      scrolling_(false) {
-  label_.set_name("pulseaudio");
-  if (!id.empty()) {
-    label_.get_style_context()->add_class(id);
-  }
+      source_idx_(0),
+      source_volume_(0),
+      source_muted_(false) {
   mainloop_ = pa_threaded_mainloop_new();
   if (mainloop_ == nullptr) {
     throw std::runtime_error("pa_mainloop_new() failed.");
@@ -34,13 +31,8 @@ waybar::modules::Pulseaudio::Pulseaudio(const std::string &id, const Json::Value
     throw std::runtime_error("pa_mainloop_run() failed.");
   }
   pa_threaded_mainloop_unlock(mainloop_);
-
-  // define the pulse scroll events only when no user provided
-  // events are configured
-  if (!config["on-scroll-up"].isString() && !config["on-scroll-down"].isString()) {
-    event_box_.add_events(Gdk::SCROLL_MASK | Gdk::SMOOTH_SCROLL_MASK);
-    event_box_.signal_scroll_event().connect(sigc::mem_fun(*this, &Pulseaudio::handleScroll));
-  }
+  event_box_.add_events(Gdk::SCROLL_MASK | Gdk::SMOOTH_SCROLL_MASK);
+  event_box_.signal_scroll_event().connect(sigc::mem_fun(*this, &Pulseaudio::handleScroll));
 }
 
 waybar::modules::Pulseaudio::~Pulseaudio() {
@@ -58,7 +50,12 @@ void waybar::modules::Pulseaudio::contextStateCb(pa_context *c, void *data) {
     case PA_CONTEXT_READY:
       pa_context_get_server_info(c, serverInfoCb, data);
       pa_context_set_subscribe_callback(c, subscribeCb, data);
-      pa_context_subscribe(c, PA_SUBSCRIPTION_MASK_SINK, nullptr, nullptr);
+      pa_context_subscribe(
+          c,
+          static_cast<enum pa_subscription_mask>(static_cast<int>(PA_SUBSCRIPTION_MASK_SINK) |
+                                                 static_cast<int>(PA_SUBSCRIPTION_MASK_SOURCE)),
+          nullptr,
+          nullptr);
       break;
     case PA_CONTEXT_FAILED:
       pa->mainloop_api_->quit(pa->mainloop_api_, 1);
@@ -72,44 +69,32 @@ void waybar::modules::Pulseaudio::contextStateCb(pa_context *c, void *data) {
 }
 
 bool waybar::modules::Pulseaudio::handleScroll(GdkEventScroll *e) {
-  // Avoid concurrent scroll event
-  bool       direction_up = false;
-  uint16_t   change = config_["scroll-step"].isUInt() ? config_["scroll-step"].asUInt() * 100 : 100;
-  pa_cvolume pa_volume = pa_volume_;
-
-  if (scrolling_) {
-    return false;
+  // change the pulse volume only when no user provided
+  // events are configured
+  if (config_["on-scroll-up"].isString() || config_["on-scroll-down"].isString()) {
+    return AModule::handleScroll(e);
   }
-  scrolling_ = true;
-  if (e->direction == GDK_SCROLL_UP) {
-    direction_up = true;
+  auto dir = AModule::getScrollDir(e);
+  if (dir == SCROLL_DIR::NONE) {
+    return true;
   }
-  if (e->direction == GDK_SCROLL_DOWN) {
-    direction_up = false;
+  double      volume_tick = static_cast<double>(PA_VOLUME_NORM) / 100;
+  pa_volume_t change = volume_tick;
+  pa_cvolume  pa_volume = pa_volume_;
+  // isDouble returns true for integers as well, just in case
+  if (config_["scroll-step"].isDouble()) {
+    change = round(config_["scroll-step"].asDouble() * volume_tick);
   }
-
-  if (e->direction == GDK_SCROLL_SMOOTH) {
-    gdouble delta_x, delta_y;
-    gdk_event_get_scroll_deltas(reinterpret_cast<const GdkEvent *>(e), &delta_x, &delta_y);
-    if (delta_y < 0) {
-      direction_up = true;
-    } else if (delta_y > 0) {
-      direction_up = false;
-    }
-  }
-
-  if (direction_up) {
-    if (volume_ + 1 < 100) {
+  if (dir == SCROLL_DIR::UP) {
+    if (volume_ + 1 <= 100) {
       pa_cvolume_inc(&pa_volume, change);
     }
-  } else {
-    if (volume_ - 1 > 0) {
+  } else if (dir == SCROLL_DIR::DOWN) {
+    if (volume_ - 1 >= 0) {
       pa_cvolume_dec(&pa_volume, change);
     }
   }
-
   pa_context_set_sink_volume_by_index(context_, sink_idx_, &pa_volume, volumeModifyCb, this);
-
   return true;
 }
 
@@ -120,8 +105,14 @@ void waybar::modules::Pulseaudio::subscribeCb(pa_context *                 conte
                                               pa_subscription_event_type_t type, uint32_t idx,
                                               void *data) {
   unsigned facility = type & PA_SUBSCRIPTION_EVENT_FACILITY_MASK;
+  unsigned operation = type & PA_SUBSCRIPTION_EVENT_TYPE_MASK;
+  if (operation != PA_SUBSCRIPTION_EVENT_CHANGE) {
+    return;
+  }
   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);
   }
 }
 
@@ -135,6 +126,23 @@ void waybar::modules::Pulseaudio::volumeModifyCb(pa_context *c, int success, voi
   }
 }
 
+/*
+ * Called when the requested source information is ready.
+ */
+void waybar::modules::Pulseaudio::sourceInfoCb(pa_context * /*context*/, const pa_source_info *i,
+                                               int /*eol*/, void *data) {
+  if (i != nullptr) {
+    auto self = static_cast<waybar::modules::Pulseaudio *>(data);
+    auto source_volume = static_cast<float>(pa_cvolume_avg(&(i->volume))) / float{PA_VOLUME_NORM};
+    self->source_volume_ = std::round(source_volume * 100.0F);
+    self->source_idx_ = i->index;
+    self->source_muted_ = i->mute != 0;
+    self->source_desc_ = i->description;
+    self->source_port_name_ = i->active_port != nullptr ? i->active_port->name : "Unknown";
+    self->dp.emit();
+  }
+}
+
 /*
  * Called when the requested sink information is ready.
  */
@@ -148,6 +156,7 @@ void waybar::modules::Pulseaudio::sinkInfoCb(pa_context * /*context*/, const pa_
     pa->volume_ = std::round(volume * 100.0F);
     pa->muted_ = i->mute != 0;
     pa->desc_ = i->description;
+    pa->monitor_ = i->monitor_source_name;
     pa->port_name_ = i->active_port != nullptr ? i->active_port->name : "Unknown";
     pa->dp.emit();
   }
@@ -160,6 +169,7 @@ 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) {
   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);
 }
 
 static const std::array<std::string, 9> ports = {
@@ -187,26 +197,36 @@ const std::string waybar::modules::Pulseaudio::getPortIcon() const {
 
 auto waybar::modules::Pulseaudio::update() -> void {
   auto format = format_;
-  if (muted_) {
-    format = config_["format-muted"].isString() ? config_["format-muted"].asString() : format;
+  std::string format_name = "format";
+  if (monitor_.find("a2dp_sink") != std::string::npos) {
+    format_name = format_name + "-bluetooth";
+    label_.get_style_context()->add_class("bluetooth");
+  } else {
+    label_.get_style_context()->remove_class("bluetooth");
+  }
+  if (muted_ ) {
+    format_name = format_name + "-muted";
     label_.get_style_context()->add_class("muted");
   } else {
     label_.get_style_context()->remove_class("muted");
-    if (port_name_.find("a2dp_sink") != std::string::npos) {
-      format =
-          config_["format-bluetooth"].isString() ? config_["format-bluetooth"].asString() : format;
-      label_.get_style_context()->add_class("bluetooth");
-    } else {
-      label_.get_style_context()->remove_class("bluetooth");
-    }
   }
-  label_.set_markup(fmt::format(
-      format, fmt::arg("volume", volume_), fmt::arg("icon", getIcon(volume_, getPortIcon()))));
+  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()) {
+    format_source = config_["format-source-muted"].asString();
+  } else if (!source_muted_ && config_["format-source"].isString()) {
+    format_source = config_["format-source"].asString();
+  }
+  format_source = fmt::format(format_source, fmt::arg("volume", source_volume_));
+  label_.set_markup(fmt::format(format,
+                                fmt::arg("desc", desc_),
+                                fmt::arg("volume", volume_),
+                                fmt::arg("format_source", format_source),
+                                fmt::arg("icon", getIcon(volume_, getPortIcon()))));
   getState(volume_);
   if (tooltipEnabled()) {
     label_.set_tooltip_text(desc_);
   }
-  if (scrolling_) {
-    scrolling_ = false;
-  }
 }

src/modules/sni/host.cpp

@@ -1,5 +1,6 @@
 #include "modules/sni/host.hpp"
-#include <iostream>
+#include <fmt/ostream.h>
+#include <spdlog/spdlog.h>
 
 namespace waybar::modules::SNI {
 
@@ -63,14 +64,14 @@ void Host::proxyReady(GObject* src, GAsyncResult* res, gpointer data) {
   GError*    error = nullptr;
   SnWatcher* watcher = sn_watcher_proxy_new_finish(res, &error);
   if (g_error_matches(error, G_IO_ERROR, G_IO_ERROR_CANCELLED)) {
-    std::cerr << error->message << std::endl;
+    spdlog::error("Host: {}", error->message);
     g_error_free(error);
     return;
   }
   auto host = static_cast<SNI::Host*>(data);
   host->watcher_ = watcher;
   if (error != nullptr) {
-    std::cerr << error->message << std::endl;
+    spdlog::error("Host: {}", error->message);
     g_error_free(error);
     return;
   }
@@ -82,13 +83,13 @@ void Host::registerHost(GObject* src, GAsyncResult* res, gpointer data) {
   GError* error = nullptr;
   sn_watcher_call_register_host_finish(SN_WATCHER(src), res, &error);
   if (g_error_matches(error, G_IO_ERROR, G_IO_ERROR_CANCELLED)) {
-    std::cerr << error->message << std::endl;
+    spdlog::error("Host: {}", error->message);
     g_error_free(error);
     return;
   }
   auto host = static_cast<SNI::Host*>(data);
   if (error != nullptr) {
-    std::cerr << error->message << std::endl;
+    spdlog::error("Host: {}", error->message);
     g_error_free(error);
     return;
   }
@@ -129,9 +130,15 @@ std::tuple<std::string, std::string> Host::getBusNameAndObjectPath(const std::st
 }
 
 void Host::addRegisteredItem(std::string service) {
-  auto [bus_name, object_path] = getBusNameAndObjectPath(service);
-  items_.emplace_back(new Item(bus_name, object_path, config_));
-  on_add_(items_.back());
+  std::string bus_name, object_path;
+  std::tie(bus_name, object_path) = getBusNameAndObjectPath(service);
+  auto it = std::find_if(items_.begin(), items_.end(), [&bus_name, &object_path](const auto& item) {
+    return bus_name == item->bus_name && object_path == item->object_path;
+  });
+  if (it == items_.end()) {
+    items_.emplace_back(new Item(bus_name, object_path, config_));
+    on_add_(items_.back());
+  }
 }
 
-}
+}  // namespace waybar::modules::SNI

src/modules/sni/item.cpp

@@ -1,6 +1,32 @@
 #include "modules/sni/item.hpp"
 #include <glibmm/main.h>
-#include <iostream>
+#include <spdlog/spdlog.h>
+
+template <>
+struct fmt::formatter<Glib::ustring> : formatter<std::string> {
+  template <typename FormatContext>
+  auto format(const Glib::ustring& value, FormatContext& ctx) {
+    return formatter<std::string>::format(value, ctx);
+  }
+};
+
+template <>
+struct fmt::formatter<Glib::VariantBase> : formatter<std::string> {
+  bool is_printable(const Glib::VariantBase& value) {
+    auto type = value.get_type_string();
+    /* Print only primitive (single character excluding 'v') and short complex types */
+    return (type.length() == 1 && islower(type[0]) && type[0] != 'v') || value.get_size() <= 32;
+  }
+
+  template <typename FormatContext>
+  auto format(const Glib::VariantBase& value, FormatContext& ctx) {
+    if (is_printable(value)) {
+      return formatter<std::string>::format(value.print(), ctx);
+    } else {
+      return formatter<std::string>::format(value.get_type_string(), ctx);
+    }
+  }
+};
 
 namespace waybar::modules::SNI {
 
@@ -47,23 +73,16 @@ void Item::proxyReady(Glib::RefPtr<Gio::AsyncResult>& result) {
     this->proxy_->signal_signal().connect(sigc::mem_fun(*this, &Item::onSignal));
 
     if (this->id.empty() || this->category.empty() || this->status.empty()) {
-      std::cerr << "Invalid Status Notifier Item: " + this->bus_name + "," + this->object_path
-                << std::endl;
+      spdlog::error("Invalid Status Notifier Item: {}, {}", bus_name, object_path);
       return;
     }
     this->updateImage();
     // this->event_box.set_tooltip_text(this->title);
 
   } catch (const Glib::Error& err) {
-    g_error("Failed to create DBus Proxy for %s %s: %s",
-            bus_name.c_str(),
-            object_path.c_str(),
-            err.what().c_str());
+    spdlog::error("Failed to create DBus Proxy for {} {}: {}", bus_name, object_path, err.what());
   } catch (const std::exception& err) {
-    g_error("Failed to create DBus Proxy for %s %s: %s",
-            bus_name.c_str(),
-            object_path.c_str(),
-            err.what());
+    spdlog::error("Failed to create DBus Proxy for {} {}: {}", bus_name, object_path, err.what());
   }
 }
 
@@ -73,41 +92,58 @@ T get_variant(Glib::VariantBase& value) {
 }
 
 void Item::setProperty(const Glib::ustring& name, Glib::VariantBase& value) {
-  if (name == "Category") {
-    category = get_variant<std::string>(value);
-  } else if (name == "Id") {
-    id = get_variant<std::string>(value);
-  } else if (name == "Title") {
-    title = get_variant<std::string>(value);
-  } else if (name == "Status") {
-    status = get_variant<std::string>(value);
-  } else if (name == "WindowId") {
-    window_id = get_variant<int32_t>(value);
-  } else if (name == "IconName") {
-    icon_name = get_variant<std::string>(value);
-  } else if (name == "IconPixmap") {
-    icon_pixmap = this->extractPixBuf(value.gobj());
-  } else if (name == "OverlayIconName") {
-    overlay_icon_name = get_variant<std::string>(value);
-  } else if (name == "OverlayIconPixmap") {
-    // TODO: overlay_icon_pixmap
-  } else if (name == "AttentionIconName") {
-    attention_icon_name = get_variant<std::string>(value);
-  } else if (name == "AttentionIconPixmap") {
-    // TODO: attention_icon_pixmap
-  } else if (name == "AttentionMovieName") {
-    attention_movie_name = get_variant<std::string>(value);
-  } else if (name == "ToolTip") {
-    // TODO: tooltip
-  } else if (name == "IconThemePath") {
-    icon_theme_path = get_variant<std::string>(value);
-    if (!icon_theme_path.empty()) {
-      icon_theme->set_search_path({icon_theme_path});
+  try {
+    spdlog::trace("Set tray item property: {}.{} = {}", id.empty() ? bus_name : id, name, value);
+
+    if (name == "Category") {
+      category = get_variant<std::string>(value);
+    } else if (name == "Id") {
+      id = get_variant<std::string>(value);
+    } else if (name == "Title") {
+      title = get_variant<std::string>(value);
+    } else if (name == "Status") {
+      status = get_variant<std::string>(value);
+    } else if (name == "WindowId") {
+      window_id = get_variant<int32_t>(value);
+    } else if (name == "IconName") {
+      icon_name = get_variant<std::string>(value);
+    } else if (name == "IconPixmap") {
+      icon_pixmap = this->extractPixBuf(value.gobj());
+    } else if (name == "OverlayIconName") {
+      overlay_icon_name = get_variant<std::string>(value);
+    } else if (name == "OverlayIconPixmap") {
+      // TODO: overlay_icon_pixmap
+    } else if (name == "AttentionIconName") {
+      attention_icon_name = get_variant<std::string>(value);
+    } else if (name == "AttentionIconPixmap") {
+      // TODO: attention_icon_pixmap
+    } else if (name == "AttentionMovieName") {
+      attention_movie_name = get_variant<std::string>(value);
+    } else if (name == "ToolTip") {
+      // TODO: tooltip
+    } else if (name == "IconThemePath") {
+      icon_theme_path = get_variant<std::string>(value);
+      if (!icon_theme_path.empty()) {
+        icon_theme->set_search_path({icon_theme_path});
+      }
+    } else if (name == "Menu") {
+      menu = get_variant<std::string>(value);
+      makeMenu();
+    } else if (name == "ItemIsMenu") {
+      item_is_menu = get_variant<bool>(value);
     }
-  } else if (name == "Menu") {
-    menu = get_variant<std::string>(value);
-  } else if (name == "ItemIsMenu") {
-    item_is_menu = get_variant<bool>(value);
+  } catch (const Glib::Error& err) {
+    spdlog::warn("Failed to set tray item property: {}.{}, value = {}, err = {}",
+                 id.empty() ? bus_name : id,
+                 name,
+                 value,
+                 err.what());
+  } catch (const std::exception& err) {
+    spdlog::warn("Failed to set tray item property: {}.{}, value = {}, err = {}",
+                 id.empty() ? bus_name : id,
+                 name,
+                 value,
+                 err.what());
   }
 }
 
@@ -132,7 +168,7 @@ void Item::processUpdatedProperties(Glib::RefPtr<Gio::AsyncResult>& _result) {
     for (const auto& [name, value] : properties) {
       Glib::VariantBase old_value;
       proxy_->get_cached_property(old_value, name);
-      if (!value.equal(old_value)) {
+      if (!old_value || !value.equal(old_value)) {
         proxy_->set_cached_property(name, value);
         setProperty(name, const_cast<Glib::VariantBase&>(value));
       }
@@ -141,14 +177,15 @@ void Item::processUpdatedProperties(Glib::RefPtr<Gio::AsyncResult>& _result) {
     this->updateImage();
     // this->event_box.set_tooltip_text(this->title);
   } catch (const Glib::Error& err) {
-    g_warning("Failed to update properties: %s", err.what().c_str());
+    spdlog::warn("Failed to update properties: {}", err.what());
   } catch (const std::exception& err) {
-    g_warning("Failed to update properties: %s", err.what());
+    spdlog::warn("Failed to update properties: {}", err.what());
   }
 }
 
 void Item::onSignal(const Glib::ustring& sender_name, const Glib::ustring& signal_name,
                     const Glib::VariantContainerBase& arguments) {
+  spdlog::trace("Tray item '{}' got signal {}", id, signal_name);
   if (!update_pending_ && signal_name.compare(0, 3, "New") == 0) {
     /* Debounce signals and schedule update of all properties.
      * Based on behavior of Plasma dataengine for StatusNotifierItem.
@@ -235,7 +272,7 @@ void Item::updateImage() {
         image.set(getIconByName(icon_name, icon_size));
       }
     } catch (Glib::Error& e) {
-      std::cerr << "Exception: " << e.what() << std::endl;
+      spdlog::error("Item '{}': {}", id, static_cast<std::string>(e.what()));
     }
   } else if (icon_pixmap) {
     // An icon extracted may be the wrong size for the tray
@@ -276,39 +313,38 @@ Glib::RefPtr<Gdk::Pixbuf> Item::getIconByName(const std::string& name, int reque
       name.c_str(), tmp_size, Gtk::IconLookupFlags::ICON_LOOKUP_FORCE_SIZE);
 }
 
-void Item::onMenuDestroyed(Item* self) {
-  self->gtk_menu = nullptr;
-  self->dbus_menu = nullptr;
+void Item::onMenuDestroyed(Item* self, GObject* old_menu_pointer) {
+  if (old_menu_pointer == reinterpret_cast<GObject*>(self->dbus_menu)) {
+    self->gtk_menu = nullptr;
+    self->dbus_menu = nullptr;
+  }
 }
 
-bool Item::makeMenu(GdkEventButton* const& ev) {
-  if (gtk_menu == nullptr) {
-    if (!menu.empty()) {
-      dbus_menu = dbusmenu_gtkmenu_new(bus_name.data(), menu.data());
-      if (dbus_menu != nullptr) {
-        g_object_ref_sink(G_OBJECT(dbus_menu));
-        g_object_weak_ref(G_OBJECT(dbus_menu), (GWeakNotify)onMenuDestroyed, this);
-        gtk_menu = Glib::wrap(GTK_MENU(dbus_menu));
-        gtk_menu->attach_to_widget(event_box);
-      }
+void Item::makeMenu() {
+  if (gtk_menu == nullptr && !menu.empty()) {
+    dbus_menu = dbusmenu_gtkmenu_new(bus_name.data(), menu.data());
+    if (dbus_menu != nullptr) {
+      g_object_ref_sink(G_OBJECT(dbus_menu));
+      g_object_weak_ref(G_OBJECT(dbus_menu), (GWeakNotify)onMenuDestroyed, this);
+      gtk_menu = Glib::wrap(GTK_MENU(dbus_menu));
+      gtk_menu->attach_to_widget(event_box);
     }
   }
-  if (gtk_menu != nullptr) {
-#if GTK_CHECK_VERSION(3, 22, 0)
-    gtk_menu->popup_at_pointer(reinterpret_cast<GdkEvent*>(ev));
-#else
-    gtk_menu->popup(ev->button, ev->time);
-#endif
-    return true;
-  }
-  return false;
 }
 
 bool Item::handleClick(GdkEventButton* const& ev) {
   auto parameters = Glib::VariantContainerBase::create_tuple(
       {Glib::Variant<int>::create(ev->x), Glib::Variant<int>::create(ev->y)});
   if ((ev->button == 1 && item_is_menu) || ev->button == 3) {
-    if (!makeMenu(ev)) {
+    makeMenu();
+    if (gtk_menu != nullptr) {
+#if GTK_CHECK_VERSION(3, 22, 0)
+      gtk_menu->popup_at_pointer(reinterpret_cast<GdkEvent*>(ev));
+#else
+      gtk_menu->popup(ev->button, ev->time);
+#endif
+      return true;
+    } else {
       proxy_->call("ContextMenu", parameters);
       return true;
     }
@@ -322,4 +358,4 @@ bool Item::handleClick(GdkEventButton* const& ev) {
   return false;
 }
 
-}  // namespace waybar::modules::SNI
+}  // namespace waybar::modules::SNI

src/modules/sni/tray.cpp

@@ -1,14 +1,19 @@
 #include "modules/sni/tray.hpp"
-#include <iostream>
+#include <spdlog/spdlog.h>
 
 namespace waybar::modules::SNI {
 
 Tray::Tray(const std::string& id, const Bar& bar, const Json::Value& config)
-    : config_(config),
+    : AModule(config, "tray", id),
       box_(bar.vertical ? Gtk::ORIENTATION_VERTICAL : Gtk::ORIENTATION_HORIZONTAL, 0),
+      watcher_(nb_hosts_),
       host_(nb_hosts_, config, std::bind(&Tray::onAdd, this, std::placeholders::_1),
             std::bind(&Tray::onRemove, this, std::placeholders::_1)) {
+  spdlog::warn(
+      "For a functional tray you must have libappindicator-* installed and export "
+      "XDG_CURRENT_DESKTOP=Unity");
   box_.set_name("tray");
+  event_box_.add(box_);
   if (!id.empty()) {
     box_.get_style_context()->add_class(id);
   }
@@ -37,6 +42,4 @@ auto Tray::update() -> void {
   }
 }
 
-Tray::operator Gtk::Widget&() { return box_; }
-
-}
+}  // namespace waybar::modules::SNI

src/modules/sni/watcher.cpp

@@ -1,24 +1,19 @@
 #include "modules/sni/watcher.hpp"
-
-#include <iostream>
+#include <spdlog/spdlog.h>
 
 using namespace waybar::modules::SNI;
 
-Watcher::Watcher()
+Watcher::Watcher(std::size_t id)
     : bus_name_id_(Gio::DBus::own_name(Gio::DBus::BusType::BUS_TYPE_SESSION,
                                        "org.kde.StatusNotifierWatcher",
                                        sigc::mem_fun(*this, &Watcher::busAcquired),
                                        Gio::DBus::SlotNameAcquired(), Gio::DBus::SlotNameLost(),
                                        Gio::DBus::BUS_NAME_OWNER_FLAGS_ALLOW_REPLACEMENT |
                                            Gio::DBus::BUS_NAME_OWNER_FLAGS_REPLACE)),
+      watcher_id_(id),
       watcher_(sn_watcher_skeleton_new()) {}
 
 Watcher::~Watcher() {
-  if (bus_name_id_ > 0) {
-    g_bus_unown_name(bus_name_id_);
-    bus_name_id_ = 0;
-  }
-
   if (hosts_ != nullptr) {
     g_slist_free_full(hosts_, gfWatchFree);
     hosts_ = nullptr;
@@ -28,7 +23,8 @@ Watcher::~Watcher() {
     g_slist_free_full(items_, gfWatchFree);
     items_ = nullptr;
   }
-  g_dbus_interface_skeleton_unexport(G_DBUS_INTERFACE_SKELETON(watcher_));
+  auto iface = G_DBUS_INTERFACE_SKELETON(watcher_);
+  g_dbus_interface_skeleton_unexport(iface);
 }
 
 void Watcher::busAcquired(const Glib::RefPtr<Gio::DBus::Connection>& conn, Glib::ustring name) {
@@ -36,7 +32,10 @@ void Watcher::busAcquired(const Glib::RefPtr<Gio::DBus::Connection>& conn, Glib:
   g_dbus_interface_skeleton_export(
       G_DBUS_INTERFACE_SKELETON(watcher_), conn->gobj(), "/StatusNotifierWatcher", &error);
   if (error != nullptr) {
-    std::cerr << error->message << std::endl;
+    // Don't print an error when a watcher is already present
+    if (error->code != 2) {
+      spdlog::error("Watcher {}: {}", watcher_id_, error->message);
+    }
     g_error_free(error);
     return;
   }
@@ -194,4 +193,4 @@ void Watcher::updateRegisteredItems(SnWatcher* obj) {
   sn_watcher_set_registered_items(obj, items);
   g_variant_unref(variant);
   g_free(items);
-}
+}

src/modules/sway/ipc/client.cpp

@@ -142,4 +142,4 @@ void Ipc::handleEvent() {
   signal_event.emit(res);
 }
 
-}  // namespace waybar::modules::sway
+}  // namespace waybar::modules::sway

src/modules/sway/mode.cpp

@@ -1,12 +1,10 @@
 #include "modules/sway/mode.hpp"
+#include <spdlog/spdlog.h>
 
 namespace waybar::modules::sway {
 
-Mode::Mode(const std::string& id, const Json::Value& config) : ALabel(config, "{}") {
-  label_.set_name("mode");
-  if (!id.empty()) {
-    label_.get_style_context()->add_class(id);
-  }
+Mode::Mode(const std::string& id, const Json::Value& config)
+    : ALabel(config, "mode", id, "{}", 0, true) {
   ipc_.subscribe(R"(["mode"])");
   ipc_.signal_event.connect(sigc::mem_fun(*this, &Mode::onEvent));
   // Launch worker
@@ -16,15 +14,20 @@ Mode::Mode(const std::string& id, const Json::Value& config) : ALabel(config, "{
 
 void Mode::onEvent(const struct Ipc::ipc_response& res) {
   try {
-    auto payload = parser_.parse(res.payload);
+    std::lock_guard<std::mutex> lock(mutex_);
+    auto                        payload = parser_.parse(res.payload);
     if (payload["change"] != "default") {
-      mode_ = payload["change"].asString();
+      if (payload["pango_markup"].asBool()) {
+        mode_ = payload["change"].asString();
+      } else {
+        mode_ = Glib::Markup::escape_text(payload["change"].asString());
+      }
     } else {
       mode_.clear();
     }
     dp.emit();
   } catch (const std::exception& e) {
-    std::cerr << "Mode: " << e.what() << std::endl;
+    spdlog::error("Mode: {}", e.what());
   }
 }
 
@@ -33,7 +36,7 @@ void Mode::worker() {
     try {
       ipc_.handleEvent();
     } catch (const std::exception& e) {
-      std::cerr << "Mode: " << e.what() << std::endl;
+      spdlog::error("Mode: {}", e.what());
     }
   };
 }
@@ -50,4 +53,4 @@ auto Mode::update() -> void {
   }
 }
 
-}  // namespace waybar::modules::sway
+}  // namespace waybar::modules::sway

src/modules/sway/window.cpp

@@ -1,17 +1,10 @@
 #include "modules/sway/window.hpp"
+#include <spdlog/spdlog.h>
 
 namespace waybar::modules::sway {
 
 Window::Window(const std::string& id, const Bar& bar, const Json::Value& config)
-    : ALabel(config, "{}"), bar_(bar), windowId_(-1) {
-  label_.set_name("window");
-  if (!id.empty()) {
-    label_.get_style_context()->add_class(id);
-  }
-  if (label_.get_max_width_chars() == -1) {
-    label_.set_hexpand(true);
-    label_.set_ellipsize(Pango::EllipsizeMode::ELLIPSIZE_END);
-  }
+    : ALabel(config, "window", id, "{}", 0, true), bar_(bar), windowId_(-1) {
   ipc_.subscribe(R"(["window","workspace"])");
   ipc_.signal_event.connect(sigc::mem_fun(*this, &Window::onEvent));
   ipc_.signal_cmd.connect(sigc::mem_fun(*this, &Window::onCmd));
@@ -25,30 +18,13 @@ void Window::onEvent(const struct Ipc::ipc_response& res) { getTree(); }
 
 void Window::onCmd(const struct Ipc::ipc_response& res) {
   try {
+    std::lock_guard<std::mutex> lock(mutex_);
     auto payload = parser_.parse(res.payload);
-    auto [nb, id, name, app_id] = getFocusedNode(payload);
-    if (!app_id_.empty()) {
-      bar_.window.get_style_context()->remove_class(app_id_);
-    }
-    if (nb == 0) {
-      bar_.window.get_style_context()->add_class("empty");
-    } else if (nb == 1) {
-      bar_.window.get_style_context()->add_class("solo");
-      if (!app_id.empty()) {
-        bar_.window.get_style_context()->add_class(app_id);
-      }
-    } else {
-      bar_.window.get_style_context()->remove_class("solo");
-      bar_.window.get_style_context()->remove_class("empty");
-    }
-    app_id_ = app_id;
-    if (windowId_ != id || window_ != name) {
-      windowId_ = id;
-      window_ = name;
-      dp.emit();
-    }
+    auto output = payload["output"].isString() ? payload["output"].asString() : "";
+    std::tie(app_nb_, windowId_, window_, app_id_) = getFocusedNode(payload["nodes"], output);
+    dp.emit();
   } catch (const std::exception& e) {
-    std::cerr << "Window: " << e.what() << std::endl;
+    spdlog::error("Window: {}", e.what());
   }
 }
 
@@ -57,12 +33,33 @@ void Window::worker() {
     try {
       ipc_.handleEvent();
     } catch (const std::exception& e) {
-      std::cerr << "Window: " << e.what() << std::endl;
+      spdlog::error("Window: {}", e.what());
     }
   };
 }
 
 auto Window::update() -> void {
+  if (!old_app_id_.empty()) {
+    bar_.window.get_style_context()->remove_class(old_app_id_);
+  }
+  if (app_nb_ == 0) {
+    bar_.window.get_style_context()->remove_class("solo");
+    if (!bar_.window.get_style_context()->has_class("empty")) {
+      bar_.window.get_style_context()->add_class("empty");
+    }
+  } else if (app_nb_ == 1) {
+    bar_.window.get_style_context()->remove_class("empty");
+    if (!bar_.window.get_style_context()->has_class("solo")) {
+      bar_.window.get_style_context()->add_class("solo");
+    }
+    if (!app_id_.empty() && !bar_.window.get_style_context()->has_class(app_id_)) {
+      bar_.window.get_style_context()->add_class(app_id_);
+      old_app_id_ = app_id_;
+    }
+  } else {
+    bar_.window.get_style_context()->remove_class("solo");
+    bar_.window.get_style_context()->remove_class("empty");
+  }
   label_.set_markup(fmt::format(format_, window_));
   if (tooltipEnabled()) {
     label_.set_tooltip_text(window_);
@@ -70,20 +67,28 @@ auto Window::update() -> void {
 }
 
 std::tuple<std::size_t, int, std::string, std::string> Window::getFocusedNode(
-    const Json::Value& nodes) {
-  for (auto const& node : nodes["nodes"]) {
-    if (node["focused"].asBool() && node["type"] == "con") {
-      if ((!config_["all-outputs"].asBool() && nodes["output"] == bar_.output->name) ||
+    const Json::Value& nodes, std::string& output) {
+  for (auto const& node : nodes) {
+    if (node["output"].isString()) {
+      output = node["output"].asString();
+    }
+    if (node["focused"].asBool() && (node["type"] == "con" || node["type"] == "floating_con")) {
+      if ((!config_["all-outputs"].asBool() && output == bar_.output->name) ||
           config_["all-outputs"].asBool()) {
         auto app_id = node["app_id"].isString() ? node["app_id"].asString()
                                                 : node["window_properties"]["instance"].asString();
-        return {nodes["nodes"].size(),
+        return {nodes.size(),
                 node["id"].asInt(),
                 Glib::Markup::escape_text(node["name"].asString()),
                 app_id};
       }
     }
-    auto [nb, id, name, app_id] = getFocusedNode(node);
+    auto [nb, id, name, app_id] = getFocusedNode(node["nodes"], output);
+    if (id > -1 && !name.empty()) {
+      return {nb, id, name, app_id};
+    }
+    // Search for floating node
+    std::tie(nb, id, name, app_id) = getFocusedNode(node["floating_nodes"], output);
     if (id > -1 && !name.empty()) {
       return {nb, id, name, app_id};
     }
@@ -95,8 +100,8 @@ void Window::getTree() {
   try {
     ipc_.sendCmd(IPC_GET_TREE);
   } catch (const std::exception& e) {
-    std::cerr << e.what() << std::endl;
+    spdlog::error("Window: {}", e.what());
   }
 }
 
-}  // namespace waybar::modules::sway
+}  // namespace waybar::modules::sway

src/modules/sway/workspaces.cpp

@@ -1,32 +1,44 @@
 #include "modules/sway/workspaces.hpp"
+#include <spdlog/spdlog.h>
 
 namespace waybar::modules::sway {
 
 Workspaces::Workspaces(const std::string &id, const Bar &bar, const Json::Value &config)
-    : bar_(bar),
-      config_(config),
-      box_(bar.vertical ? Gtk::ORIENTATION_VERTICAL : Gtk::ORIENTATION_HORIZONTAL, 0),
-      scrolling_(false) {
+    : AModule(config, "workspaces", id, false, !config["disable-scroll"].asBool()),
+      bar_(bar),
+      box_(bar.vertical ? Gtk::ORIENTATION_VERTICAL : Gtk::ORIENTATION_HORIZONTAL, 0) {
   box_.set_name("workspaces");
   if (!id.empty()) {
     box_.get_style_context()->add_class(id);
   }
+  event_box_.add(box_);
   ipc_.subscribe(R"(["workspace"])");
   ipc_.signal_event.connect(sigc::mem_fun(*this, &Workspaces::onEvent));
   ipc_.signal_cmd.connect(sigc::mem_fun(*this, &Workspaces::onCmd));
   ipc_.sendCmd(IPC_GET_WORKSPACES);
+  if (config["enable-bar-scroll"].asBool()) {
+    auto &window = const_cast<Bar &>(bar_).window;
+    window.add_events(Gdk::SCROLL_MASK | Gdk::SMOOTH_SCROLL_MASK);
+    window.signal_scroll_event().connect(sigc::mem_fun(*this, &Workspaces::handleScroll));
+  }
   // Launch worker
   worker();
 }
 
-void Workspaces::onEvent(const struct Ipc::ipc_response &res) { ipc_.sendCmd(IPC_GET_WORKSPACES); }
+void Workspaces::onEvent(const struct Ipc::ipc_response &res) {
+  try {
+    ipc_.sendCmd(IPC_GET_WORKSPACES);
+  } catch (const std::exception &e) {
+    spdlog::error("Workspaces: {}", e.what());
+  }
+}
 
 void Workspaces::onCmd(const struct Ipc::ipc_response &res) {
   if (res.type == IPC_GET_WORKSPACES) {
     try {
-      auto payload = parser_.parse(res.payload);
-      if (payload.isArray()) {
+      {
         std::lock_guard<std::mutex> lock(mutex_);
+        auto                        payload = parser_.parse(res.payload);
         workspaces_.clear();
         std::copy_if(payload.begin(),
                      payload.end(),
@@ -36,14 +48,56 @@ void Workspaces::onCmd(const struct Ipc::ipc_response &res) {
                                   ? workspace["output"].asString() == bar_.output->name
                                   : true;
                      });
-        dp.emit();
+
+        // adding persistent workspaces (as per the config file)
+        if (config_["persistent_workspaces"].isObject()) {
+          const Json::Value &            p_workspaces = config_["persistent_workspaces"];
+          const std::vector<std::string> p_workspaces_names = p_workspaces.getMemberNames();
+
+          for (const std::string &p_w_name : p_workspaces_names) {
+            const Json::Value &p_w = p_workspaces[p_w_name];
+            auto               it =
+                std::find_if(payload.begin(), payload.end(), [&p_w_name](const Json::Value &node) {
+                  return node["name"].asString() == p_w_name;
+                });
+
+            if (it != payload.end()) {
+              continue;  // already displayed by some bar
+            }
+
+            if (p_w.isArray() && !p_w.empty()) {
+              // Adding to target outputs
+              for (const Json::Value &output : p_w) {
+                if (output.asString() == bar_.output->name) {
+                  Json::Value v;
+                  v["name"] = p_w_name;
+                  v["target_output"] = bar_.output->name;
+                  workspaces_.emplace_back(std::move(v));
+                  break;
+                }
+              }
+            } else {
+              // Adding to all outputs
+              Json::Value v;
+              v["name"] = p_w_name;
+              v["target_output"] = "";
+              workspaces_.emplace_back(std::move(v));
+            }
+          }
+
+          std::sort(workspaces_.begin(),
+                    workspaces_.end(),
+                    [](const Json::Value &lhs, const Json::Value &rhs) {
+                      if (lhs["name"].isInt() && rhs["name"].isInt()) {
+                        return lhs["name"].asInt() < rhs["name"].asInt();
+                      }
+                      return lhs["name"].asString() < rhs["name"].asString();
+                    });
+        }
       }
+      dp.emit();
     } catch (const std::exception &e) {
-      std::cerr << "Workspaces: " << e.what() << std::endl;
-    }
-  } else {
-    if (scrolling_) {
-      scrolling_ = false;
+      spdlog::error("Workspaces: {}", e.what());
     }
   }
 }
@@ -53,7 +107,7 @@ void Workspaces::worker() {
     try {
       ipc_.handleEvent();
     } catch (const std::exception &e) {
-      std::cerr << "Workspaces: " << e.what() << std::endl;
+      spdlog::error("Workspaces: {}", e.what());
     }
   };
 }
@@ -99,6 +153,11 @@ auto Workspaces::update() -> void {
     } else {
       button.get_style_context()->remove_class("urgent");
     }
+    if ((*it)["target_output"].isString()) {
+      button.get_style_context()->add_class("persistent");
+    } else {
+      button.get_style_context()->remove_class("persistent");
+    }
     if (needReorder) {
       box_.reorder_child(button, it - workspaces_.begin());
     }
@@ -120,21 +179,26 @@ auto Workspaces::update() -> void {
 }
 
 Gtk::Button &Workspaces::addButton(const Json::Value &node) {
-  auto  pair = buttons_.emplace(node["name"].asString(), node["name"].asString());
-  auto &button = pair.first->second;
+  auto   pair = buttons_.emplace(node["name"].asString(), node["name"].asString());
+  auto &&button = pair.first->second;
   box_.pack_start(button, false, false, 0);
   button.set_relief(Gtk::RELIEF_NONE);
-  button.signal_clicked().connect([this, pair] {
+  button.signal_clicked().connect([this, node] {
     try {
-      ipc_.sendCmd(IPC_COMMAND, fmt::format("workspace \"{}\"", pair.first->first));
+      if (node["target_output"].isString()) {
+        ipc_.sendCmd(
+            IPC_COMMAND,
+            fmt::format("workspace \"{}\"; move workspace to output \"{}\"; workspace \"{}\"",
+                        node["name"].asString(),
+                        node["target_output"].asString(),
+                        node["name"].asString()));
+      } else {
+        ipc_.sendCmd(IPC_COMMAND, fmt::format("workspace \"{}\"", node["name"].asString()));
+      }
     } catch (const std::exception &e) {
-      std::cerr << e.what() << std::endl;
+      spdlog::error("Workspaces: {}", e.what());
     }
   });
-  if (!config_["disable-scroll"].asBool()) {
-    button.add_events(Gdk::SCROLL_MASK | Gdk::SMOOTH_SCROLL_MASK);
-    button.signal_scroll_event().connect(sigc::mem_fun(*this, &Workspaces::handleScroll));
-  }
   return button;
 }
 
@@ -153,54 +217,41 @@ std::string Workspaces::getIcon(const std::string &name, const Json::Value &node
 }
 
 bool Workspaces::handleScroll(GdkEventScroll *e) {
-  // Avoid concurrent scroll event
-  if (scrolling_) {
-    return false;
+  auto dir = AModule::getScrollDir(e);
+  if (dir == SCROLL_DIR::NONE) {
+    return true;
   }
   std::string name;
-  scrolling_ = true;
   {
     std::lock_guard<std::mutex> lock(mutex_);
     auto it = std::find_if(workspaces_.begin(), workspaces_.end(), [](const auto &workspace) {
       return workspace["focused"].asBool();
     });
     if (it == workspaces_.end()) {
-      scrolling_ = false;
-      return false;
+      return true;
     }
-    switch (e->direction) {
-      case GDK_SCROLL_DOWN:
-      case GDK_SCROLL_RIGHT:
-        name = getCycleWorkspace(it, false);
-        break;
-      case GDK_SCROLL_UP:
-      case GDK_SCROLL_LEFT:
-        name = getCycleWorkspace(it, true);
-        break;
-      case GDK_SCROLL_SMOOTH:
-        gdouble delta_x, delta_y;
-        gdk_event_get_scroll_deltas(reinterpret_cast<const GdkEvent *>(e), &delta_x, &delta_y);
-        if (delta_y < 0) {
-          name = getCycleWorkspace(it, true);
-        } else if (delta_y > 0) {
-          name = getCycleWorkspace(it, false);
-        }
-        break;
-      default:
-        break;
+    if (dir == SCROLL_DIR::DOWN || dir == SCROLL_DIR::RIGHT) {
+      name = getCycleWorkspace(it, false);
+    } else if (dir == SCROLL_DIR::UP || dir == SCROLL_DIR::LEFT) {
+      name = getCycleWorkspace(it, true);
+    } else {
+      return true;
     }
-    if (name.empty() || name == (*it)["name"].asString()) {
-      scrolling_ = false;
-      return false;
+    if (name == (*it)["name"].asString()) {
+      return true;
     }
   }
-  ipc_.sendCmd(IPC_COMMAND, fmt::format("workspace \"{}\"", name));
+  try {
+    ipc_.sendCmd(IPC_COMMAND, fmt::format("workspace \"{}\"", name));
+  } catch (const std::exception &e) {
+    spdlog::error("Workspaces: {}", e.what());
+  }
   return true;
 }
 
 const std::string Workspaces::getCycleWorkspace(std::vector<Json::Value>::iterator it,
                                                 bool                               prev) const {
-  if (prev && it == workspaces_.begin()) {
+  if (prev && it == workspaces_.begin() && !config_["disable-scroll-wraparound"].asBool()) {
     return (*(--workspaces_.end()))["name"].asString();
   }
   if (prev && it != workspaces_.begin())
@@ -208,7 +259,11 @@ const std::string Workspaces::getCycleWorkspace(std::vector<Json::Value>::iterat
   else if (!prev && it != workspaces_.end())
     ++it;
   if (!prev && it == workspaces_.end()) {
-    return (*(++workspaces_.begin()))["name"].asString();
+    if (config_["disable-scroll-wraparound"].asBool()) {
+      --it;
+    } else {
+      return (*(workspaces_.begin()))["name"].asString();
+    }
   }
   return (*it)["name"].asString();
 }
@@ -233,6 +288,4 @@ void Workspaces::onButtonReady(const Json::Value &node, Gtk::Button &button) {
   }
 }
 
-Workspaces::operator Gtk::Widget &() { return box_; }
-
-}  // namespace waybar::modules::sway
+}  // namespace waybar::modules::sway

src/modules/temperature.cpp

@@ -1,24 +1,17 @@
 #include "modules/temperature.hpp"
 
 waybar::modules::Temperature::Temperature(const std::string& id, const Json::Value& config)
-    : ALabel(config, "{temperatureC}°C", 10) {
+    : ALabel(config, "temperature", id, "{temperatureC}°C", 10) {
   if (config_["hwmon-path"].isString()) {
     file_path_ = config_["hwmon-path"].asString();
   } else {
     auto zone = config_["thermal-zone"].isInt() ? config_["thermal-zone"].asInt() : 0;
     file_path_ = fmt::format("/sys/class/thermal/thermal_zone{}/temp", zone);
   }
-#ifdef FILESYSTEM_EXPERIMENTAL
-  if (!std::experimental::filesystem::exists(file_path_)) {
-#else
-  if (!std::filesystem::exists(file_path_)) {
-#endif
+  std::ifstream temp(file_path_);
+  if (!temp.is_open()) {
     throw std::runtime_error("Can't open " + file_path_);
   }
-  label_.set_name("temperature");
-  if (!id.empty()) {
-    label_.get_style_context()->add_class(id);
-  }
   thread_ = [this] {
     dp.emit();
     thread_.sleep_for(interval_);
@@ -35,8 +28,11 @@ auto waybar::modules::Temperature::update() -> void {
   } else {
     label_.get_style_context()->remove_class("critical");
   }
-  label_.set_markup(fmt::format(
-      format, fmt::arg("temperatureC", temperature_c), fmt::arg("temperatureF", temperature_f)));
+  auto max_temp = config_["critical-threshold"].isInt() ? config_["critical-threshold"].asInt() : 0;
+  label_.set_markup(fmt::format(format,
+                                fmt::arg("temperatureC", temperature_c),
+                                fmt::arg("temperatureF", temperature_f),
+                                fmt::arg("icon", getIcon(temperature_c, "", max_temp))));
 }
 
 std::tuple<uint16_t, uint16_t> waybar::modules::Temperature::getTemperature() {
@@ -58,4 +54,4 @@ std::tuple<uint16_t, uint16_t> waybar::modules::Temperature::getTemperature() {
 bool waybar::modules::Temperature::isCritical(uint16_t temperature_c) {
   return config_["critical-threshold"].isInt() &&
          temperature_c >= config_["critical-threshold"].asInt();
-}
+}

subprojects/gtk-layer-shell.wrap

@@ -0,0 +1,5 @@
+[wrap-file]
+directory = gtk-layer-shell-0.1.0
+source_filename = gtk-layer-shell-0.1.0.tar.gz
+source_hash = f7569e27ae30b1a94c3ad6c955cf56240d6bc272b760d9d266ce2ccdb94a5cf0
+source_url = https://github.com/wmww/gtk-layer-shell/archive/v0.1.0/gtk-layer-shell-0.1.0.tar.gz

subprojects/spdlog.wrap

@@ -0,0 +1,10 @@
+[wrap-file]
+directory = spdlog-1.3.1
+
+source_url = https://github.com/gabime/spdlog/archive/v1.3.1.tar.gz
+source_filename = v1.3.1.tar.gz
+source_hash = 160845266e94db1d4922ef755637f6901266731c4cb3b30b45bf41efa0e6ab70
+
+patch_url = https://wrapdb.mesonbuild.com/v1/projects/spdlog/1.3.1/1/get_zip
+patch_filename = spdlog-1.3.1-1-wrap.zip
+patch_hash = 715a0229781019b853d409cc0bf891ee4b9d3a17bec0cf87f4ad30b28bbecc87