feat(WIP): tray

feat(wip): tray

feat(wip): tray

feat(WIP): gdbus

feat(WIP): tray

include/client.hpp

@@ -2,14 +2,10 @@
 
 #include <unistd.h>
 #include <wordexp.h>
-
 #include <fmt/format.h>
-
 #include <gdk/gdk.h>
 #include <wayland-client.h>
-
 #include <gdk/gdkwayland.h>
-
 #include "bar.hpp"
 
 namespace waybar {
@@ -30,14 +26,14 @@ class Client {
     struct wl_seat *seat = nullptr;
     std::vector<std::unique_ptr<Bar>> bars;
 
-private:
-  void bindInterfaces();
-  auto setupCss();
+  private:
+    void bindInterfaces();
+    auto setupCss();
 
-  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 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);
 };
 
 }

include/factory.hpp

@@ -9,6 +9,7 @@
 #include "modules/battery.hpp"
 #include "modules/memory.hpp"
 #include "modules/cpu.hpp"
+#include "modules/sni/tray.hpp"
 #ifdef HAVE_LIBNL
 #include "modules/network.hpp"
 #endif

include/modules/sni/snh.hpp

@@ -0,0 +1,38 @@
+#pragma once
+
+#include <gtkmm.h>
+#include <dbus-status-notifier-watcher.h>
+#include "modules/sni/sni.hpp"
+
+namespace waybar::modules::SNI {
+
+class Host {
+  public:
+    Host(Glib::Dispatcher&);
+    ~Host();
+    std::vector<Item> items;
+  private:
+    static void busAcquired(GDBusConnection*, const gchar*, gpointer);
+    static void nameAppeared(GDBusConnection*, const gchar*, const gchar*,
+      gpointer);
+    static void nameVanished(GDBusConnection*, const gchar*, gpointer);
+    static void proxyReady(GObject*, GAsyncResult*, gpointer);
+    static void registerHost(GObject*, GAsyncResult*, gpointer);
+    static void itemRegistered(SnOrgKdeStatusNotifierWatcher*, const gchar*,
+      gpointer);
+    static void itemUnregistered(SnOrgKdeStatusNotifierWatcher*, const gchar*,
+      gpointer);
+
+    void getBusNameAndObjectPath(const gchar*, gchar**, gchar**);
+    void addRegisteredItem(const gchar* service);
+
+    uint32_t bus_name_id_;
+    uint32_t watcher_id_;
+    std::string bus_name_;
+    std::string object_path_;
+    Glib::Dispatcher& dp_;
+    GCancellable* cancellable_ = nullptr;
+    SnOrgKdeStatusNotifierWatcher* watcher_ = nullptr;
+};
+
+}

include/modules/sni/sni.hpp

@@ -0,0 +1,41 @@
+#pragma once
+
+#include <gtkmm.h>
+#include <dbus-status-notifier-item.h>
+
+namespace waybar::modules::SNI {
+
+class Item {
+  public:
+    Item(std::string, std::string, Glib::Dispatcher&);
+    ~Item();
+    int icon_size;
+    int effective_icon_size;
+    Gtk::Image* image;
+    std::string category;
+    std::string id;
+    std::string status;
+
+    std::string title;
+    int32_t window_id;
+    std::string icon_name;
+    std::string overlay_icon_name;
+    std::string attention_icon_name;
+    std::string attention_movie_name;
+    std::string icon_theme_path;
+    std::string menu;
+    bool item_is_menu;
+  private:
+    static void proxyReady(GObject* obj, GAsyncResult* res, gpointer data);
+    static void getAll(GObject* obj, GAsyncResult* res, gpointer data);
+
+    void updateImage();
+    Glib::RefPtr<Gdk::Pixbuf> getIconByName(std::string name, int size);
+    std::string bus_name_;
+    std::string object_path_;
+    Glib::Dispatcher& dp_;
+    GCancellable* cancellable_ = nullptr;
+    SnOrgKdeStatusNotifierItem* proxy_ = nullptr;
+};
+
+}

include/modules/sni/snw.hpp

@@ -0,0 +1,47 @@
+#pragma once
+
+#include <gtkmm.h>
+#include <dbus-status-notifier-watcher.h>
+
+namespace waybar::modules::SNI {
+
+typedef enum {
+  GF_WATCH_TYPE_HOST,
+  GF_WATCH_TYPE_ITEM
+} GfWatchType;
+
+typedef struct {
+  GfWatchType type;
+  gchar* service;
+  gchar* bus_name;
+  gchar* object_path;
+  guint watch_id;
+} GfWatch;
+
+class Watcher {
+  public:
+    Watcher();
+    ~Watcher();
+  private:
+    static void busAcquired(GDBusConnection*, const gchar*, gpointer);
+    static gboolean handleRegisterHost(Watcher*,
+      GDBusMethodInvocation*, const gchar*);
+    static gboolean handleRegisterItem(Watcher*,
+      GDBusMethodInvocation*, const gchar*);
+    static GfWatch* gfWatchFind(GSList* list, const gchar* bus_name,
+      const gchar* object_path);
+    static GfWatch* gfWatchNew(GfWatchType type,
+      const gchar* service, const gchar* bus_name, const gchar* object_path);
+    static void nameVanished(GDBusConnection* connection, const char* name,
+      gpointer data);
+
+    void updateRegisteredItems(SnOrgKdeStatusNotifierWatcher* obj);
+
+    uint32_t bus_name_id_;
+    uint32_t watcher_id_;
+    GSList* hosts_ = nullptr;
+    GSList* items_ = nullptr;
+    SnOrgKdeStatusNotifierWatcher *watcher_ = nullptr;
+};
+
+}

include/modules/sni/tray.hpp

@@ -0,0 +1,25 @@
+#pragma once
+
+#include <fmt/format.h>
+#include <thread>
+#include "util/json.hpp"
+#include "IModule.hpp"
+#include "modules/sni/snw.hpp"
+#include "modules/sni/snh.hpp"
+
+namespace waybar::modules::SNI {
+
+class Tray : public IModule {
+  public:
+    Tray(const Json::Value&);
+    auto update() -> void;
+    operator Gtk::Widget &();
+  private:
+    std::thread thread_;
+    const Json::Value& config_;
+    Gtk::Box box_;
+    SNI::Watcher watcher_ ;
+    SNI::Host host_;
+};
+
+}

meson.build

@@ -46,6 +46,10 @@ src_files = files(
     'src/modules/clock.cpp',
     'src/modules/custom.cpp',
     'src/modules/cpu.cpp',
+    'src/modules/sni/tray.cpp',
+    'src/modules/sni/snw.cpp',
+    'src/modules/sni/snh.cpp',
+    'src/modules/sni/sni.cpp',
     'src/main.cpp',
     'src/bar.cpp',
     'src/client.cpp'
@@ -88,7 +92,7 @@ executable(
         gtkmm,
         libnl,
         libnlgen,
-        libpulse,
+        libpulse
     ],
     include_directories: [include_directories('include')],
     install: true,

protocol/dbus-menu.xml

@@ -0,0 +1,69 @@
+<!DOCTYPE node PUBLIC "-//freedesktop//DTD D-BUS Object Introspection 1.0//EN"
+"http://www.freedesktop.org/standards/dbus/1.0/introspect.dtd">
+<node>
+<interface name="com.canonical.dbusmenu">
+    <!-- Properties -->
+    <property name="Version" type="u" access="read" />
+    <property name="TextDirection" type="s" access="read" />
+    <property name="Status" type="s" access="read" />
+    <property name="IconThemePath" type="as" access="read" />
+
+    <!-- Functions -->
+    <method name="GetLayout">
+        <arg type="i" name="parentId" direction="in" />
+        <arg type="i" name="recursionDepth" direction="in" />
+        <arg type="as" name="propertyNames" direction="in" />
+        <arg type="u" name="revision" direction="out" />
+        <arg type="(ia{sv}av)" name="layout" direction="out" />
+    </method>
+
+    <method name="GetGroupProperties">
+        <arg type="ai" name="ids" direction="in" />
+        <arg type="as" name="propertyNames" direction="in" />
+        <arg type="a(ia{sv})" name="properties" direction="out" />
+    </method>
+
+    <method name="GetProperty">
+        <arg type="i" name="id" direction="in" />
+        <arg type="s" name="name" direction="in" />
+        <arg type="v" name="value" direction="out" />
+    </method>
+
+    <method name="Event">
+        <arg type="i" name="id" direction="in" />
+        <arg type="s" name="eventId" direction="in" />
+        <arg type="v" name="data" direction="in" />
+        <arg type="u" name="timestamp" direction="in" />
+    </method>
+
+    <method name="EventGroup">
+        <arg type="a(isvu)" name="events" direction="in" />
+        <arg type="ai" name="idErrors" direction="out" />
+    </method>
+
+    <method name="AboutToShow">
+        <arg type="i" name="id" direction="in" />
+        <arg type="b" name="needUpdate" direction="out" />
+    </method>
+
+    <method name="AboutToShowGroup">
+        <arg type="ai" name="ids" direction="in" />
+        <arg type="ai" name="updatesNeeded" direction="out" />
+        <arg type="ai" name="idErrors" direction="out" />
+    </method>
+
+    <!-- Signals -->
+    <signal name="ItemsPropertiesUpdated">
+        <arg type="a(ia{sv})" name="updatedProps" direction="out" />
+        <arg type="a(ias)" name="removedProps" direction="out" />
+    </signal>
+    <signal name="LayoutUpdated">
+        <arg type="u" name="revision" direction="out" />
+        <arg type="i" name="parent" direction="out" />
+    </signal>
+    <signal name="ItemActivationRequested">
+        <arg type="i" name="id" direction="out" />
+        <arg type="u" name="timestamp" direction="out" />
+    </signal>
+</interface>
+</node>

protocol/dbus-status-notifier-item.xml

@@ -0,0 +1,77 @@
+<!DOCTYPE node PUBLIC "-//freedesktop//DTD D-BUS Object Introspection 1.0//EN"
+"http://www.freedesktop.org/standards/dbus/1.0/introspect.dtd">
+<node>
+<interface name="org.kde.StatusNotifierItem">
+    <property name="Category" type="s" access="read"/>
+    <property name="Id" type="s" access="read"/>
+    <property name="Title" type="s" access="read"/>
+    <property name="Status" type="s" access="read"/>
+    <property name="WindowId" type="i" access="read"/>
+    <property name="Menu" type="o" access="read" />
+
+    <!-- main icon -->
+    <!-- names are preferred over pixmaps -->
+    <property name="IconName" type="s" access="read" />
+    <property name="IconThemePath" type="s" access="read" />
+
+    <!-- struct containing width, height and image data-->
+    <!-- implementation has been dropped as of now -->
+    <property name="IconPixmap" type="a(iiay)" access="read" />
+
+    <!-- not used in ayatana code, no test case so far -->
+    <property name="OverlayIconName" type="s" access="read"/>
+    <property name="OverlayIconPixmap" type="a(iiay)" access="read" />
+
+    <!-- Requesting attention icon -->
+    <property name="AttentionIconName" type="s" access="read"/>
+
+    <!--same definition as image-->
+    <property name="AttentionIconPixmap" type="a(iiay)" access="read" />
+
+    <!-- tooltip data -->
+    <!-- unimplemented as of now -->
+    <!--(iiay) is an image-->
+    <property name="ToolTip" type="(sa(iiay)ss)" access="read" />
+
+
+    <!-- interaction: actually, we do not use them. -->
+    <method name="Activate">
+        <arg name="x" type="i" direction="in"/>
+        <arg name="y" type="i" direction="in"/>
+    </method>
+    <method name="SecondaryActivate">
+        <arg name="x" type="i" direction="in"/>
+        <arg name="y" type="i" direction="in"/>
+    </method>
+    <method name="Scroll">
+        <arg name="delta" type="i" direction="in"/>
+        <arg name="dir"   type="s" direction="in"/>
+    </method>
+
+    <!-- Signals: the client wants to change something in the status-->
+    <signal name="NewTitle"></signal>
+    <signal name="NewIcon"></signal>
+    <signal name="NewIconThemePath">
+        <arg type="s" name="icon_theme_path" direction="out" />
+    </signal>
+    <signal name="NewAttentionIcon"></signal>
+    <signal name="NewOverlayIcon"></signal>
+    <signal name="NewToolTip"></signal>
+    <signal name="NewStatus">
+        <arg name="status" type="s" />
+    </signal>
+
+    <!-- ayatana labels -->
+    <!-- These are commented out because GDBusProxy would otherwise require them,
+         but they are not available for KDE indicators
+    -->
+    <!--<signal name="XAyatanaNewLabel">
+        <arg type="s" name="label" direction="out" />
+        <arg type="s" name="guide" direction="out" />
+    </signal>
+    <property name="XAyatanaLabel" type="s" access="read" />
+    <property name="XAyatanaLabelGuide" type="s" access="read" />-->
+
+
+</interface>
+</node>

protocol/dbus-status-notifier-watcher.xml

@@ -0,0 +1,42 @@
+<!DOCTYPE node PUBLIC "-//freedesktop//DTD D-BUS Object Introspection 1.0//EN" "http://www.freedesktop.org/standards/dbus/1.0/introspect.dtd">
+<node>
+  <interface name="org.kde.StatusNotifierWatcher">
+
+    <!-- methods -->
+    <method name="RegisterStatusNotifierItem">
+       <arg name="service" type="s" direction="in"/>
+    </method>
+
+    <method name="RegisterStatusNotifierHost">
+       <arg name="service" type="s" direction="in"/>
+    </method>
+
+
+    <!-- properties -->
+
+    <property name="RegisteredStatusNotifierItems" type="as" access="read">
+       <annotation name="org.qtproject.QtDBus.QtTypeName.Out0" value="QStringList"/>
+    </property>
+
+    <property name="IsStatusNotifierHostRegistered" type="b" access="read"/>
+
+    <property name="ProtocolVersion" type="i" access="read"/>
+
+
+    <!-- signals -->
+
+    <signal name="StatusNotifierItemRegistered">
+        <arg type="s"/>
+    </signal>
+
+    <signal name="StatusNotifierItemUnregistered">
+        <arg type="s"/>
+    </signal>
+
+    <signal name="StatusNotifierHostRegistered">
+    </signal>
+
+    <signal name="StatusNotifierHostUnregistered">
+    </signal>
+  </interface>
+</node>

protocol/meson.build

@@ -36,10 +36,28 @@ foreach p : client_protocols
 	client_protos_headers += wayland_scanner_client.process(xml)
 endforeach
 
+gdbus_code = generator(
+    find_program('gdbus-codegen'),
+    output: '@BASENAME@.c',
+    arguments: ['--c-namespace', 'Sn', '--body', '--output', '@OUTPUT@', '@INPUT@']
+)
+
+gdbus_header = generator(
+    find_program('gdbus-codegen'),
+    output: '@BASENAME@.h',
+    arguments: ['--c-namespace', 'Sn', '--header', '--output', '@OUTPUT@', '@INPUT@']
+)
+
+client_protos_src += gdbus_code.process('./dbus-status-notifier-watcher.xml')
+client_protos_headers += gdbus_header.process('./dbus-status-notifier-watcher.xml')
+
+client_protos_src += gdbus_code.process('./dbus-status-notifier-item.xml')
+client_protos_headers += gdbus_header.process('./dbus-status-notifier-item.xml')
+
 lib_client_protos = static_library(
 	'client_protos',
 	client_protos_src + client_protos_headers,
-	dependencies: [wayland_client]
+	dependencies: [wayland_client, gtkmm]
 ) # for the include directory
 
 client_protos = declare_dependency(

resources/config

@@ -6,7 +6,7 @@
     // Choose the order of the modules
     "modules-left": ["sway/workspaces", "custom/spotify"],
     "modules-center": ["sway/window"],
-    "modules-right": ["pulseaudio", "network", "cpu", "memory", "battery", "clock"],
+    "modules-right": ["pulseaudio", "network", "cpu", "memory", "battery", "clock", "tray"],
     // Modules configuration
     // "sway/workspaces": {
     //     "disable-scroll": true,

resources/style.css

@@ -27,7 +27,7 @@ window {
     border-bottom: 3px solid white;
 }
 
-#clock, #battery, #cpu, #memory, #network, #pulseaudio, #custom-spotify {
+#clock, #battery, #cpu, #memory, #network, #pulseaudio, #custom-spotify, #tray {
     padding: 0 10px;
     margin: 0 5px;
 }
@@ -94,3 +94,7 @@ window {
     background: #66cc99;
     color: #2a5c45;
 }
+
+#tray {
+    background-color: #2980b9;
+}

src/factory.cpp

@@ -27,6 +27,9 @@ waybar::IModule* waybar::Factory::makeModule(const std::string &name) const
     if (name == "clock") {
       return new waybar::modules::Clock(config_[name]);
     }
+    if (name == "tray") {
+      return new waybar::modules::SNI::Tray(config_[name]);
+    }
     #ifdef HAVE_LIBNL
     if (name == "network") {
       return new waybar::modules::Network(config_[name]);

src/modules/sni/snh.cpp

@@ -0,0 +1,148 @@
+#include "modules/sni/snh.hpp"
+
+#include <iostream>
+
+waybar::modules::SNI::Host::Host(Glib::Dispatcher& dp)
+: dp_(dp)
+{
+  GBusNameOwnerFlags flags = static_cast<GBusNameOwnerFlags>(
+    G_BUS_NAME_OWNER_FLAGS_NONE);
+  bus_name_ = "org.kde.StatusNotifierHost-" + std::to_string(getpid());
+  object_path_ = "/StatusNotifierHost";
+  bus_name_id_ = g_bus_own_name(G_BUS_TYPE_SESSION,
+    bus_name_.c_str(), flags,
+    &Host::busAcquired, nullptr, nullptr, this, nullptr);
+}
+
+waybar::modules::SNI::Host::~Host()
+{
+}
+
+void waybar::modules::SNI::Host::busAcquired(GDBusConnection* connection,
+  const gchar* name, gpointer data)
+{
+  auto host = static_cast<SNI::Host *>(data);
+  host->watcher_id_ = g_bus_watch_name(
+    G_BUS_TYPE_SESSION,
+    "org.kde.StatusNotifierWatcher",
+    G_BUS_NAME_WATCHER_FLAGS_NONE,
+    &Host::nameAppeared, &Host::nameVanished, data, nullptr);
+}
+
+void waybar::modules::SNI::Host::nameAppeared(GDBusConnection* connection,
+  const gchar* name, const gchar* name_owner, gpointer data)
+{
+  auto host = static_cast<SNI::Host *>(data);
+  if (host->cancellable_ != nullptr) {
+    std::cout << "WTF" << std::endl;
+  }
+  host->cancellable_ = g_cancellable_new();
+  sn_org_kde_status_notifier_watcher_proxy_new(
+    connection,
+    G_DBUS_PROXY_FLAGS_NONE,
+    "org.kde.StatusNotifierWatcher",
+    "/StatusNotifierWatcher",
+    host->cancellable_, &Host::proxyReady, data);
+}
+
+void waybar::modules::SNI::Host::nameVanished(GDBusConnection* connection,
+  const gchar* name, gpointer data)
+{
+  auto host = static_cast<SNI::Host *>(data);
+  g_cancellable_cancel(host->cancellable_);
+  g_clear_object(&host->cancellable_);
+  g_clear_object(&host->watcher_);
+  host->items.clear();
+}
+
+void waybar::modules::SNI::Host::proxyReady(GObject* src, GAsyncResult* res,
+  gpointer data)
+{
+  GError* error = nullptr;
+  SnOrgKdeStatusNotifierWatcher* watcher =
+    sn_org_kde_status_notifier_watcher_proxy_new_finish(res, &error);
+  if (g_error_matches(error, G_IO_ERROR, G_IO_ERROR_CANCELLED)) {
+    std::cerr << error->message << std::endl;
+    g_error_free(error);
+    return;
+  }
+  auto host = static_cast<SNI::Host *>(data);
+  host->watcher_ = watcher;
+  if (error != nullptr) {
+    std::cerr << error->message << std::endl;
+    g_error_free(error);
+    return;
+  }
+  sn_org_kde_status_notifier_watcher_call_register_status_notifier_host(
+    host->watcher_, host->object_path_.c_str(), host->cancellable_,
+    &Host::registerHost, data);
+}
+
+void waybar::modules::SNI::Host::registerHost(GObject* src, GAsyncResult* res,
+  gpointer data)
+{
+  GError* error = nullptr;
+  sn_org_kde_status_notifier_watcher_call_register_status_notifier_host_finish(
+    SN_ORG_KDE_STATUS_NOTIFIER_WATCHER(src), res, &error);
+  if (g_error_matches(error, G_IO_ERROR, G_IO_ERROR_CANCELLED)) {
+    std::cerr << error->message << std::endl;
+    g_error_free(error);
+    return;
+  }
+  auto host = static_cast<SNI::Host *>(data);
+  if (error != nullptr) {
+    std::cerr << error->message << std::endl;
+    g_error_free(error);
+    return; 
+  }
+  g_signal_connect(host->watcher_, "status-notifier-item-registered",
+    G_CALLBACK(&Host::itemRegistered), data);
+  g_signal_connect(host->watcher_, "status-notifier-item-unregistered",
+    G_CALLBACK(&Host::itemUnregistered), data);
+  auto items =
+    sn_org_kde_status_notifier_watcher_dup_registered_status_notifier_items(host->watcher_);
+  if (items) {
+    for (uint32_t i = 0; items[i] != nullptr; i += 1) {
+      host->addRegisteredItem(items[i]);
+    }
+  }
+  g_strfreev(items);
+}
+
+void waybar::modules::SNI::Host::itemRegistered(
+  SnOrgKdeStatusNotifierWatcher* watcher, const gchar* service, gpointer data)
+{
+  std::cout << "Item registered" << std::endl;
+  auto host = static_cast<SNI::Host *>(data);
+  host->addRegisteredItem(service);
+}
+
+void waybar::modules::SNI::Host::itemUnregistered(
+  SnOrgKdeStatusNotifierWatcher* watcher, const gchar* service, gpointer data)
+{
+  std::cout << "Item Unregistered" << std::endl;
+}
+
+void waybar::modules::SNI::Host::getBusNameAndObjectPath(const gchar* service,
+  gchar** bus_name, gchar** object_path)
+{
+  gchar* tmp = g_strstr_len (service, -1, "/");
+  if (tmp != nullptr) {
+    gchar** str = g_strsplit(service, "/", 2);
+    *bus_name = g_strdup(str[0]);
+    *object_path = g_strdup(tmp);
+    g_strfreev(str);
+  } else {
+    *bus_name = g_strdup(service);
+    *object_path = g_strdup("/StatusNotifierItem");
+  }
+}
+
+void waybar::modules::SNI::Host::addRegisteredItem(const gchar* service)
+{
+  gchar* bus_name = nullptr;
+  gchar* object_path = nullptr;
+
+  getBusNameAndObjectPath(service, &bus_name, &object_path);
+  items.emplace_back(bus_name, object_path, dp_);
+}

src/modules/sni/sni.cpp

@@ -0,0 +1,165 @@
+#include "modules/sni/sni.hpp"
+
+#include <iostream>
+
+waybar::modules::SNI::Item::Item(std::string bus_name, std::string object_path,
+  Glib::Dispatcher& dp)
+  : icon_size(16), effective_icon_size(0),
+    image(Gtk::manage(new Gtk::Image())),
+    bus_name_(bus_name), object_path_(object_path), dp_(dp)
+{
+  cancellable_ = g_cancellable_new();
+  sn_org_kde_status_notifier_item_proxy_new_for_bus(G_BUS_TYPE_SESSION,
+    G_DBUS_PROXY_FLAGS_NONE, bus_name_.c_str(), object_path_.c_str(),
+    cancellable_, &Item::proxyReady, this);
+}
+
+waybar::modules::SNI::Item::~Item()
+{
+}
+
+void waybar::modules::SNI::Item::proxyReady(GObject* obj, GAsyncResult* res,
+  gpointer data)
+{
+  GError* error = nullptr;
+  SnOrgKdeStatusNotifierItem* proxy =
+    sn_org_kde_status_notifier_item_proxy_new_for_bus_finish(res, &error);
+  if (g_error_matches(error, G_IO_ERROR, G_IO_ERROR_CANCELLED)) {
+    g_error_free(error);
+    return;
+  }
+  auto item = static_cast<SNI::Item *>(data);
+  item->proxy_ = proxy;
+  if (error) {
+    std::cerr << error->message << std::endl;
+    g_error_free(error);
+    return;
+  }
+  auto conn = g_dbus_proxy_get_connection(G_DBUS_PROXY(proxy));
+  g_dbus_connection_call(conn, item->bus_name_.c_str(),
+    item->object_path_.c_str(), "org.freedesktop.DBus.Properties", "GetAll",
+    g_variant_new("(s)", "org.kde.StatusNotifierItem"),
+    G_VARIANT_TYPE("(a{sv})"), G_DBUS_CALL_FLAGS_NONE, -1,
+    item->cancellable_, &Item::getAll, data);
+}
+
+void waybar::modules::SNI::Item::getAll(GObject* obj, GAsyncResult* res,
+  gpointer data)
+{
+  GError* error = nullptr;
+  auto conn = G_DBUS_CONNECTION(obj);
+  GVariant* properties = g_dbus_connection_call_finish(conn, res, &error);
+  if (g_error_matches(error, G_IO_ERROR, G_IO_ERROR_CANCELLED)) {
+    g_error_free(error);
+    return;
+  }
+  auto item = static_cast<SNI::Item *>(data);
+  if (error) {
+    std::cerr << error->message << std::endl;
+    g_error_free(error);
+    return;
+  }
+  GVariantIter* it = nullptr;
+  g_variant_get(properties, "(a{sv})", &it);
+  gchar* key;
+  GVariant* value;
+  while (g_variant_iter_next(it, "{sv}", &key, &value)) {
+    if (g_strcmp0(key, "Category") == 0) {
+      item->category = g_variant_dup_string(value, nullptr);
+    } else if (g_strcmp0(key, "Id") == 0) {
+      item->id = g_variant_dup_string(value, nullptr);
+    } else if (g_strcmp0(key, "Title") == 0) {
+      item->title = g_variant_dup_string(value, nullptr);
+    } else if (g_strcmp0(key, "Status") == 0) {
+      item->status = g_variant_dup_string(value, nullptr);
+    } else if (g_strcmp0(key, "WindowId") == 0) {
+      item->window_id = g_variant_get_int32 (value);
+    } else if (g_strcmp0(key, "IconName") == 0) {
+      item->icon_name = g_variant_dup_string(value, nullptr);
+    } else if (g_strcmp0(key, "IconPixmap") == 0) {
+      // TODO: icon pixmap
+    } else if (g_strcmp0(key, "OverlayIconName") == 0) {
+      item->overlay_icon_name = g_variant_dup_string(value, nullptr);
+    } else if (g_strcmp0(key, "OverlayIconPixmap") == 0) {
+      // TODO: overlay_icon_pixmap
+    } else if (g_strcmp0(key, "AttentionIconName") == 0) {
+      item->attention_icon_name = g_variant_dup_string(value, nullptr);
+    } else if (g_strcmp0(key, "AttentionIconPixmap") == 0) {
+      // TODO: attention_icon_pixmap
+    } else if (g_strcmp0(key, "AttentionMovieName") == 0) {
+      item->attention_movie_name = g_variant_dup_string(value, nullptr);
+    } else if (g_strcmp0(key, "ToolTip") == 0) {
+      // TODO: tooltip
+    } else if (g_strcmp0(key, "IconThemePath") == 0) {
+      item->icon_theme_path = g_variant_dup_string(value, nullptr);
+    } else if (g_strcmp0(key, "Menu") == 0) {
+      item->menu = g_variant_dup_string(value, nullptr);
+    } else if (g_strcmp0(key, "ItemIsMenu") == 0) {
+      item->item_is_menu = g_variant_get_boolean(value);
+    }
+    g_variant_unref(value);
+    g_free(key);
+  }
+  g_variant_iter_free(it);
+  g_variant_unref(properties);
+  if (item->id.empty() || item->category.empty() || item->status.empty()) {
+    std::cerr << "Invalid Status Notifier Item: " + item->bus_name_ + ","
+      + item->object_path_ << std::endl;
+    return;
+  }
+  if (!item->icon_theme_path.empty()) {
+    GtkIconTheme* icon_theme = gtk_icon_theme_get_default();
+    gtk_icon_theme_append_search_path(icon_theme,
+      item->icon_theme_path.c_str());
+  }
+  item->updateImage();
+  item->dp_.emit();
+  // TODO: handle change
+}
+
+void waybar::modules::SNI::Item::updateImage()
+{
+  if (!icon_name.empty()) {
+    auto pixbuf = getIconByName(icon_name, icon_size);
+    if (pixbuf->gobj() == nullptr) {
+      // Try to find icons specified by path and filename
+      pixbuf = Gdk::Pixbuf::create_from_file(icon_name);
+      if (pixbuf->gobj() != nullptr) {
+        // An icon specified by path and filename may be the wrong size for the tray
+        pixbuf->scale_simple(icon_size - 2, icon_size - 2,
+          Gdk::InterpType::INTERP_BILINEAR);
+      }
+    }
+    if (pixbuf->gobj() == nullptr) {
+      pixbuf = getIconByName("image-missing", icon_size);
+    }
+    image->set(pixbuf);
+  } else {
+    image->set_from_icon_name("image-missing", Gtk::ICON_SIZE_MENU);
+    image->set_pixel_size(icon_size);
+  }
+}
+
+Glib::RefPtr<Gdk::Pixbuf> waybar::modules::SNI::Item::getIconByName(
+  std::string name, int request_size)
+{
+  int icon_size = 0;
+  Glib::RefPtr<Gtk::IconTheme> icon_theme =
+    Gtk::IconTheme::get_default();
+  icon_theme->rescan_if_needed();
+  auto sizes = icon_theme->get_icon_sizes(name.c_str());
+  for (auto size : sizes) {
+    // -1 == scalable
+    if (size == request_size || size == -1) {
+      icon_size = request_size;
+      break;
+    } else if (size < request_size || size > icon_size) {
+      icon_size = size;
+    }
+  }
+  if (icon_size == 0) {
+    icon_size = request_size;
+  }
+  return icon_theme->load_icon(name.c_str(), icon_size,
+    Gtk::IconLookupFlags::ICON_LOOKUP_FORCE_SIZE);
+}

src/modules/sni/snw.cpp

@@ -0,0 +1,169 @@
+#include "modules/sni/snw.hpp"
+
+#include <iostream>
+
+waybar::modules::SNI::Watcher::Watcher()
+{
+  GBusNameOwnerFlags flags = static_cast<GBusNameOwnerFlags>(
+    G_BUS_NAME_OWNER_FLAGS_ALLOW_REPLACEMENT
+    | G_BUS_NAME_OWNER_FLAGS_REPLACE);
+  bus_name_id_ = g_bus_own_name(G_BUS_TYPE_SESSION,
+    "org.kde.StatusNotifierWatcher", flags,
+    &Watcher::busAcquired, nullptr, nullptr, this, nullptr);
+  watcher_ = sn_org_kde_status_notifier_watcher_skeleton_new();
+}
+
+waybar::modules::SNI::Watcher::~Watcher()
+{
+}
+
+void waybar::modules::SNI::Watcher::busAcquired(GDBusConnection* connection,
+  const gchar* name, gpointer data)
+{
+  GError* error = nullptr;
+  auto host = static_cast<SNI::Watcher*>(data);
+  g_dbus_interface_skeleton_export(G_DBUS_INTERFACE_SKELETON(host->watcher_),
+    connection, "/StatusNotifierWatcher", &error);
+  if (error != nullptr) {
+    std::cerr << error->message << std::endl;
+    g_error_free(error);
+    return;
+  }
+  g_signal_connect_swapped(host->watcher_,
+    "handle-register-status-notifier-item",
+    G_CALLBACK(&Watcher::handleRegisterItem), data);
+  g_signal_connect_swapped(host->watcher_,
+    "handle-register-status-notifier-host",
+    G_CALLBACK(&Watcher::handleRegisterHost), data);
+  sn_org_kde_status_notifier_watcher_set_protocol_version(host->watcher_, 0);
+  sn_org_kde_status_notifier_watcher_set_is_status_notifier_host_registered(
+    host->watcher_, TRUE);
+  std::cout << "Bus aquired" << std::endl;
+}
+
+gboolean waybar::modules::SNI::Watcher::handleRegisterHost(
+  Watcher* obj, GDBusMethodInvocation* invocation,
+  const gchar* service)
+{
+  const gchar* bus_name = service;
+  const gchar* object_path = "/StatusNotifierHost";
+
+  if (*service == '/') {
+    bus_name = g_dbus_method_invocation_get_sender(invocation);
+    object_path = service;
+  }
+  if (g_dbus_is_name(bus_name) == FALSE) {
+    g_dbus_method_invocation_return_error(invocation, G_DBUS_ERROR,
+      G_DBUS_ERROR_INVALID_ARGS, "D-Bus bus name '%s' is not valid", bus_name);
+    return TRUE;
+  }
+  auto watch = gfWatchFind(obj->hosts_, bus_name, object_path);
+  if (watch != nullptr) {
+    g_dbus_method_invocation_return_error(invocation, G_DBUS_ERROR,
+      G_DBUS_ERROR_INVALID_ARGS, "Status Notifier Host with bus name '%s' and object path '%s' is already registered",
+      bus_name, object_path);
+    return TRUE;
+  }
+  watch = gfWatchNew(GF_WATCH_TYPE_HOST, service, bus_name, object_path);
+  obj->hosts_ = g_slist_prepend(obj->hosts_, watch);
+  sn_org_kde_status_notifier_watcher_set_is_status_notifier_host_registered(
+    obj->watcher_, TRUE);
+  if (g_slist_length(obj->hosts_)) {
+    sn_org_kde_status_notifier_watcher_emit_status_notifier_host_registered(
+      obj->watcher_);
+  }
+  sn_org_kde_status_notifier_watcher_complete_register_status_notifier_host(
+    obj->watcher_, invocation);
+  std::cout << "Host registered: " << bus_name << std::endl;
+  return TRUE;
+}
+
+gboolean waybar::modules::SNI::Watcher::handleRegisterItem(
+  Watcher* obj, GDBusMethodInvocation* invocation,
+  const gchar* service)
+{
+  const gchar* bus_name = service;
+  const gchar* object_path = "/StatusNotifierItem";
+
+  if (*service == '/') {
+    bus_name = g_dbus_method_invocation_get_sender(invocation);
+    object_path = service;
+  }
+  if (g_dbus_is_name(bus_name) == FALSE) {
+    g_dbus_method_invocation_return_error(invocation, G_DBUS_ERROR,
+      G_DBUS_ERROR_INVALID_ARGS, "D-Bus bus name '%s' is not valid", bus_name);
+    return TRUE;
+  }
+  auto watch = gfWatchFind(obj->items_, bus_name, object_path);
+  if (watch != nullptr) {
+    g_warning("Status Notifier Item with bus name '%s' and object path '%s' is already registered",
+      bus_name, object_path);
+    sn_org_kde_status_notifier_watcher_complete_register_status_notifier_item(
+      obj->watcher_, invocation);
+    return TRUE;
+  }
+  watch = gfWatchNew(GF_WATCH_TYPE_ITEM, service, bus_name, object_path);
+  obj->items_ = g_slist_prepend(obj->items_, watch);
+  obj->updateRegisteredItems(obj->watcher_);
+  gchar* tmp = g_strdup_printf("%s%s", bus_name, object_path);
+  sn_org_kde_status_notifier_watcher_emit_status_notifier_item_registered(
+    obj->watcher_, tmp);
+  g_free(tmp);
+  sn_org_kde_status_notifier_watcher_complete_register_status_notifier_item(
+    obj->watcher_, invocation);
+  return TRUE;
+}
+
+waybar::modules::SNI::GfWatch* waybar::modules::SNI::Watcher::gfWatchFind(
+  GSList* list, const gchar* bus_name, const gchar* object_path)
+{
+  for (GSList* l = list; l != nullptr; l = g_slist_next (l)) {
+    GfWatch* watch = static_cast<GfWatch*>(l->data);
+    if (g_strcmp0 (watch->bus_name, bus_name) == 0
+      && g_strcmp0 (watch->object_path, object_path) == 0) {
+      return watch;
+    }
+  }
+  return nullptr;
+}
+
+waybar::modules::SNI::GfWatch* waybar::modules::SNI::Watcher::gfWatchNew(
+  GfWatchType type, const gchar* service, const gchar* bus_name,
+  const gchar* object_path)
+{
+  GfWatch* watch = g_new0(GfWatch, 1);
+  watch->type = type;
+  watch->service = g_strdup(service);
+  watch->bus_name = g_strdup(bus_name);
+  watch->object_path = g_strdup(object_path);
+  watch->watch_id = g_bus_watch_name(G_BUS_TYPE_SESSION, bus_name,
+    G_BUS_NAME_WATCHER_FLAGS_NONE, nullptr, &Watcher::nameVanished, watch,
+    nullptr);
+  return watch;
+}
+
+void waybar::modules::SNI::Watcher::nameVanished(GDBusConnection* connection,
+  const char* name, gpointer data)
+{
+  //TODO
+  std::cout << "name vanished" << std::endl;
+}
+
+void waybar::modules::SNI::Watcher::updateRegisteredItems(
+  SnOrgKdeStatusNotifierWatcher* obj)
+{
+  GVariantBuilder builder;
+  g_variant_builder_init(&builder, G_VARIANT_TYPE("as")); 
+  for (GSList* l = items_; l != nullptr; l = g_slist_next(l)) {
+    GfWatch* watch = static_cast<GfWatch*>(l->data);
+    gchar* item = g_strdup_printf ("%s%s", watch->bus_name, watch->object_path);
+    g_variant_builder_add (&builder, "s", item);
+    g_free (item);
+  }
+  GVariant* variant = g_variant_builder_end(&builder);
+  const gchar** items = g_variant_get_strv (variant, nullptr);
+  sn_org_kde_status_notifier_watcher_set_registered_status_notifier_items(
+    obj, items);
+  g_variant_unref(variant);
+  g_free(items);
+}

src/modules/sni/tray.cpp

@@ -0,0 +1,26 @@
+#include "modules/sni/tray.hpp"
+
+#include <iostream>
+
+waybar::modules::SNI::Tray::Tray(const Json::Value& config)
+  : config_(config), watcher_(), host_(dp)
+{
+}
+
+auto waybar::modules::SNI::Tray::update() -> void
+{
+  for (auto item : host_.items) {
+    item.image->set_tooltip_text(item.title);
+    box_.pack_start(*item.image);
+  }
+  if (box_.get_children().size() > 0) {
+    box_.set_name("tray");
+    box_.show_all();
+  } else {
+    box_.set_name("");
+  }
+}
+
+waybar::modules::SNI::Tray::operator Gtk::Widget &() {
+  return box_;
+}