Use LXQt's StatusNotifierItem implementation instead of appindicator

2025-08-31 06:35:14 +00:00 · 2020-01-31 10:34:37 +04:00
parent 1b1f9d9985
commit 3b4dfa1381
22 changed files with 1089 additions and 567 deletions
--- a/Telegram/SourceFiles/platform/linux/linux_desktop_environment.cpp
+++ b/Telegram/SourceFiles/platform/linux/linux_desktop_environment.cpp
@@ -9,10 +9,6 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL

 #include "platform/linux/specific_linux.h"

-#ifndef TDESKTOP_DISABLE_DBUS_INTEGRATION
-#include <QDBusInterface>
-#endif
-
 namespace Platform {
 namespace DesktopEnvironment {
 namespace {
@@ -44,18 +40,15 @@ Type Compute() {
 				return Type::Gnome;
 			}
 			return Type::Unity;
-		} else if (list.contains("pantheon")) {
-			return Type::Pantheon;
 		} else if (list.contains("gnome")) {
-			if (list.contains("ubuntu"))
-				return Type::Ubuntu;
-
 			return Type::Gnome;
 		} else if (list.contains("kde")) {
 			if (kdeSession == qstr("5")) {
 				return Type::KDE5;
 			}
 			return Type::KDE4;
+		} else if (list.contains("mate")) {
+			return Type::MATE;
 		}
 	}

@@ -70,6 +63,8 @@ Type Compute() {
 				return Type::KDE4;
 			}
 			return Type::KDE3;
+		} else if (desktopSession == qstr("mate")) {
+			return Type::MATE;
 		}
 	}

@@ -96,9 +91,8 @@ Type ComputeAndLog() {
 		case Type::KDE3: return "KDE3";
 		case Type::KDE4: return "KDE4";
 		case Type::KDE5: return "KDE5";
-		case Type::Ubuntu: return "Ubuntu";
 		case Type::Unity: return "Unity";
-		case Type::Pantheon: return "Pantheon";
+		case Type::MATE: return "MATE";
 		}
 		return QString::number(static_cast<int>(result));
 	};
@@ -114,20 +108,5 @@ Type Get() {
 	return result;
 }

-bool TryQtTrayIcon() {
-	return !IsPantheon();
-}
-
-bool PreferAppIndicatorTrayIcon() {
-	return (InSandbox() && !IsKDE())
-		|| IsUnity()
-		|| IsUbuntu()
-#ifndef TDESKTOP_DISABLE_DBUS_INTEGRATION
-		|| (IsGnome() && QDBusInterface("org.kde.StatusNotifierWatcher", "/").isValid());
-#else
-		|| IsGnome();
-#endif
-}
-
 } // namespace DesktopEnvironment
 } // namespace Platform
--- a/Telegram/SourceFiles/platform/linux/linux_desktop_environment.h
+++ b/Telegram/SourceFiles/platform/linux/linux_desktop_environment.h
@@ -16,9 +16,8 @@ enum class Type {
 	KDE3,
 	KDE4,
 	KDE5,
-	Ubuntu,
 	Unity,
-	Pantheon,
+	MATE,
 };

 Type Get();
@@ -43,20 +42,13 @@ inline bool IsKDE() {
 	return IsKDE3() || IsKDE4() || IsKDE5();
 }

-inline bool IsUbuntu() {
-	return Get() == Type::Ubuntu;
-}
-
 inline bool IsUnity() {
 	return Get() == Type::Unity;
 }

-inline bool IsPantheon() {
-	return Get() == Type::Pantheon;
+inline bool IsMATE() {
+	return Get() == Type::MATE;
 }

-bool TryQtTrayIcon();
-bool PreferAppIndicatorTrayIcon();
-
 } // namespace DesktopEnvironment
 } // namespace Platform
--- a/Telegram/SourceFiles/platform/linux/linux_libs.cpp
+++ b/Telegram/SourceFiles/platform/linux/linux_libs.cpp
@@ -126,16 +126,6 @@ bool setupGtkBase(QLibrary &lib_gtk) {
 	DEBUG_LOG(("Checked gtk with gtk_init_check!"));
 	return true;
 }
-
-bool setupAppIndicator(QLibrary &lib_indicator) {
-	if (!load(lib_indicator, "app_indicator_new", app_indicator_new)) return false;
-	if (!load(lib_indicator, "app_indicator_set_status", app_indicator_set_status)) return false;
-	if (!load(lib_indicator, "app_indicator_set_menu", app_indicator_set_menu)) return false;
-	if (!load(lib_indicator, "app_indicator_set_icon_full", app_indicator_set_icon_full)) return false;
-
-	DEBUG_LOG(("Library appindicator functions loaded!"));
-	return true;
-}
 #endif // !TDESKTOP_DISABLE_GTK_INTEGRATION

 } // namespace
@@ -197,10 +187,6 @@ f_g_type_check_instance_cast g_type_check_instance_cast = nullptr;
 f_g_type_check_instance_is_a g_type_check_instance_is_a = nullptr;
 f_g_signal_connect_data g_signal_connect_data = nullptr;
 f_g_signal_handler_disconnect g_signal_handler_disconnect = nullptr;
-f_app_indicator_new app_indicator_new = nullptr;
-f_app_indicator_set_status app_indicator_set_status = nullptr;
-f_app_indicator_set_menu app_indicator_set_menu = nullptr;
-f_app_indicator_set_icon_full app_indicator_set_icon_full = nullptr;
 f_gdk_init_check gdk_init_check = nullptr;
 f_gdk_pixbuf_new_from_data gdk_pixbuf_new_from_data = nullptr;
 f_gdk_pixbuf_new_from_file gdk_pixbuf_new_from_file = nullptr;
@@ -233,33 +219,14 @@ void start() {
 #ifndef TDESKTOP_DISABLE_GTK_INTEGRATION

 	bool gtkLoaded = false;
-	bool indicatorLoaded = false;
 	bool isWayland = QGuiApplication::platformName().startsWith(qsl("wayland"), Qt::CaseInsensitive);
-	QLibrary lib_gtk, lib_indicator;
-	if (loadLibrary(lib_indicator, "ayatana-appindicator3", 1) || loadLibrary(lib_indicator, "appindicator3", 1)) {
-		if (loadLibrary(lib_gtk, "gtk-3", 0)) {
-			gtkLoaded = setupGtkBase(lib_gtk);
-			indicatorLoaded = setupAppIndicator(lib_indicator);
-		}
-	}
-	if ((!gtkLoaded || !indicatorLoaded) && !isWayland) {
-		if (loadLibrary(lib_indicator, "ayatana-appindicator", 1) || loadLibrary(lib_indicator, "appindicator", 1)) {
-			if (loadLibrary(lib_gtk, "gtk-x11-2.0", 0)) {
-				gtkLoaded = indicatorLoaded = false;
-				gtkLoaded = setupGtkBase(lib_gtk);
-				indicatorLoaded = setupAppIndicator(lib_indicator);
-			}
-		}
-	}
+	QLibrary lib_gtk;

-	// If no appindicator, try at least load gtk.
-	if (!gtkLoaded && !indicatorLoaded) {
-		if (loadLibrary(lib_gtk, "gtk-3", 0)) {
-			gtkLoaded = setupGtkBase(lib_gtk);
-		}
-		if (!gtkLoaded && !isWayland && loadLibrary(lib_gtk, "gtk-x11-2.0", 0)) {
-			gtkLoaded = setupGtkBase(lib_gtk);
-		}
+	if (loadLibrary(lib_gtk, "gtk-3", 0)) {
+		gtkLoaded = setupGtkBase(lib_gtk);
+	}
+	if (!gtkLoaded && !isWayland && loadLibrary(lib_gtk, "gtk-x11-2.0", 0)) {
+		gtkLoaded = setupGtkBase(lib_gtk);
 	}

 	if (gtkLoaded) {
@@ -287,7 +254,7 @@ void start() {
 		load(lib_gtk, "gtk_button_set_label", gtk_button_set_label);
 		load(lib_gtk, "gtk_button_get_type", gtk_button_get_type);
 	} else {
-		LOG(("Could not load gtk-x11-2.0!"));
+		LOG(("Could not load gtk-3 or gtk-x11-2.0!"));
 	}
 #endif // !TDESKTOP_DISABLE_GTK_INTEGRATION
 }
--- a/Telegram/SourceFiles/platform/linux/linux_libs.h
+++ b/Telegram/SourceFiles/platform/linux/linux_libs.h
@@ -13,11 +13,6 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL

 extern "C" {
 #undef signals
-#ifdef TDESKTOP_USE_AYATANA_INDICATORS
-#include <libayatana-appindicator/app-indicator.h>
-#else
-#include <libappindicator/app-indicator.h>
-#endif
 #include <gtk/gtk.h>
 #include <gdk/gdk.h>
 #define signals public
@@ -278,18 +273,6 @@ inline gulong g_signal_connect_swapped_helper(gpointer instance, const gchar *de
 typedef void (*f_g_signal_handler_disconnect)(gpointer instance, gulong handler_id);
 extern f_g_signal_handler_disconnect g_signal_handler_disconnect;

-typedef AppIndicator* (*f_app_indicator_new)(const gchar *id, const gchar *icon_name, AppIndicatorCategory category);
-extern f_app_indicator_new app_indicator_new;
-
-typedef void (*f_app_indicator_set_status)(AppIndicator *self, AppIndicatorStatus status);
-extern f_app_indicator_set_status app_indicator_set_status;
-
-typedef void (*f_app_indicator_set_menu)(AppIndicator *self, GtkMenu *menu);
-extern f_app_indicator_set_menu app_indicator_set_menu;
-
-typedef void (*f_app_indicator_set_icon_full)(AppIndicator *self, const gchar *icon_name, const gchar *icon_desc);
-extern f_app_indicator_set_icon_full app_indicator_set_icon_full;
-
 typedef gboolean (*f_gdk_init_check)(gint *argc, gchar ***argv);
 extern f_gdk_init_check gdk_init_check;

--- a/Telegram/SourceFiles/platform/linux/main_window_linux.cpp
+++ b/Telegram/SourceFiles/platform/linux/main_window_linux.cpp
@@ -15,6 +15,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "history/history.h"
 #include "mainwindow.h"
 #include "core/application.h"
+#include "core/sandbox.h"
 #include "lang/lang_keys.h"
 #include "storage/localstorage.h"
 #include "facades.h"
@@ -22,101 +23,77 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL

 #ifndef TDESKTOP_DISABLE_DBUS_INTEGRATION
 #include <QtDBus>
-#endif
-
-#include <QtWidgets/QMenu>
-#include <QtWidgets/QAction>
+#endif // !TDESKTOP_DISABLE_DBUS_INTEGRATION

 namespace Platform {
 namespace {

-bool noQtTrayIcon = false, tryAppIndicator = false;
-bool useGtkBase = false, useAppIndicator = false, useStatusIcon = false, trayIconChecked = false, useUnityCount = false;
-
-#ifndef TDESKTOP_DISABLE_GTK_INTEGRATION
-AppIndicator *_trayIndicator = 0;
-GtkStatusIcon *_trayIcon = 0;
-GtkWidget *_trayMenu = 0;
-GdkPixbuf *_trayPixbuf = 0;
-QByteArray _trayPixbufData;
-QList<QPair<GtkWidget*, QObject*> > _trayItems;
-#endif // !TDESKTOP_DISABLE_GTK_INTEGRATION
+constexpr auto kDisableTrayCounter = "TDESKTOP_DISABLE_TRAY_COUNTER"_cs;
+constexpr auto kTrayIconName = "telegram"_cs;
+constexpr auto kPanelTrayIconName = "telegram-panel"_cs;
+constexpr auto kMutePanelTrayIconName = "telegram-mute-panel"_cs;
+constexpr auto kAttentionPanelTrayIconName = "telegram-attention-panel"_cs;
+constexpr auto kSNIWatcherService = "org.kde.StatusNotifierWatcher"_cs;
+constexpr auto kTrayIconFilename = "tdesktop-trayicon-XXXXXX.png"_cs;

 int32 _trayIconSize = 48;
 bool _trayIconMuted = true;
 int32 _trayIconCount = 0;
 QImage _trayIconImageBack, _trayIconImage;
 QString _trayIconThemeName, _trayIconName;
-QString _desktopFile;

 #ifndef TDESKTOP_DISABLE_DBUS_INTEGRATION
-QString _dbusPath = "/";
-#endif
-
-#ifndef TDESKTOP_DISABLE_GTK_INTEGRATION
-void _trayIconPopup(GtkStatusIcon *status_icon, guint button, guint32 activate_time, gpointer popup_menu) {
-	Libs::gtk_menu_popup(Libs::gtk_menu_cast(popup_menu), NULL, NULL, Libs::gtk_status_icon_position_menu, status_icon, button, activate_time);
-}
-
-void _trayIconActivate(GtkStatusIcon *status_icon, gpointer popup_menu) {
-	if (App::wnd()->isActiveWindow() && App::wnd()->isVisible()) {
-		Libs::gtk_menu_popup(Libs::gtk_menu_cast(popup_menu), NULL, NULL, Libs::gtk_status_icon_position_menu, status_icon, 0, Libs::gtk_get_current_event_time());
-	} else {
-		App::wnd()->showFromTray();
-	}
-}
-
-gboolean _trayIconResized(GtkStatusIcon *status_icon, gint size, gpointer popup_menu) {
-	_trayIconSize = size;
-	if (Global::started()) Notify::unreadCounterUpdated();
-	return FALSE;
-}
-#endif // !TDESKTOP_DISABLE_GTK_INTEGRATION
+bool UseUnityCount = false;
+QString UnityCountDesktopFile;
+QString UnityCountDBusPath = "/";
+#endif // !TDESKTOP_DISABLE_DBUS_INTEGRATION

 #define QT_RED 0
 #define QT_GREEN 1
 #define QT_BLUE 2
 #define QT_ALPHA 3

-#ifndef TDESKTOP_DISABLE_GTK_INTEGRATION
-#define GTK_RED 2
-#define GTK_GREEN 1
-#define GTK_BLUE 0
-#define GTK_ALPHA 3
-#endif // !TDESKTOP_DISABLE_GTK_INTEGRATION
+QString GetTrayIconName() {
+	const auto counter = Core::App().unreadBadge();
+	const auto muted = Core::App().unreadBadgeMuted();

-QImage _trayIconImageGen(bool useSystemIcon) {
+	return (counter > 0)
+		? (muted
+			? kMutePanelTrayIconName.utf16()
+			: kAttentionPanelTrayIconName.utf16())
+		: kPanelTrayIconName.utf16();
+}
+
+QImage TrayIconImageGen() {
 	const auto counter = Core::App().unreadBadge();
 	const auto muted = Core::App().unreadBadgeMuted();
 	const auto counterSlice = (counter >= 1000)
 		? (1000 + (counter % 100))
 		: counter;

-	QString iconThemeName = QIcon::themeName();
-	QString iconName = (counter > 0)
-		? (muted ? "telegram-mute-panel" : "telegram-attention-panel")
-		: "telegram-panel";
+	const auto iconThemeName = QIcon::themeName();
+	const auto iconName = GetTrayIconName();

-	if (_trayIconImage.isNull() || _trayIconImage.width() != _trayIconSize
-		|| (useSystemIcon && (iconThemeName != _trayIconThemeName
-			|| iconName != _trayIconName))
-		|| muted != _trayIconMuted || counterSlice != _trayIconCount) {
+	if (_trayIconImage.isNull()
+		|| _trayIconImage.width() != _trayIconSize
+		|| iconThemeName != _trayIconThemeName
+		|| iconName != _trayIconName
+		|| muted != _trayIconMuted
+		|| counterSlice != _trayIconCount) {
 		if (_trayIconImageBack.isNull()
 			|| _trayIconImageBack.width() != _trayIconSize
 			|| iconThemeName != _trayIconThemeName
 			|| iconName != _trayIconName) {
 			_trayIconImageBack = Core::App().logo();

-			if (useSystemIcon) {
-				_trayIconImageBack = QIcon::fromTheme(
-					iconName,
-					QIcon::fromTheme(
-						"telegram",
-						QIcon(QPixmap::fromImage(_trayIconImageBack)))
-				).pixmap(_trayIconSize, _trayIconSize).toImage();
-			}
+			_trayIconImageBack = QIcon::fromTheme(
+				iconName,
+				QIcon::fromTheme(
+					kTrayIconName.utf16(),
+					QIcon(QPixmap::fromImage(_trayIconImageBack)))
+			).pixmap(_trayIconSize, _trayIconSize).toImage();

-			int w = _trayIconImageBack.width(),
+			auto w = _trayIconImageBack.width(),
 				h = _trayIconImageBack.height();

 			if (w != _trayIconSize || h != _trayIconSize) {
@@ -132,8 +109,8 @@ QImage _trayIconImageGen(bool useSystemIcon) {

 			w = _trayIconImageBack.width();
 			h = _trayIconImageBack.height();
-			int perline = _trayIconImageBack.bytesPerLine();
-			uchar *bytes = _trayIconImageBack.bits();
+			const auto perline = _trayIconImageBack.bytesPerLine();
+			auto *bytes = _trayIconImageBack.bits();

 			for (int32 y = 0; y < h; ++y) {
 				for (int32 x = 0; x < w; ++x) {
@@ -189,81 +166,66 @@ QImage _trayIconImageGen(bool useSystemIcon) {
 	return _trayIconImage;
 }

-QString _trayIconImageFile() {
-	const auto counter = Core::App().unreadBadge();
-	const auto muted = Core::App().unreadBadgeMuted();
-	const auto counterSlice = (counter >= 1000)
-		? (1000 + (counter % 100))
-		: counter;
-
-	QString iconThemeName = QIcon::themeName();
-
-	QString name = cWorkingDir() + qsl("tdata/ticons/icon%1_%2_%3_%4.png")
-		.arg(muted ? "mute" : "")
-		.arg(iconThemeName)
-		.arg(_trayIconSize)
-		.arg(counterSlice);
-
-	QFileInfo info(name);
-	if (info.exists()) return name;
-
-	QImage img = _trayIconImageGen(false);
-	if (img.save(name, "PNG")) return name;
-
-	QDir dir(info.absoluteDir());
-	if (!dir.exists()) {
-		dir.mkpath(dir.absolutePath());
-		if (img.save(name, "PNG")) return name;
-	}
-
-	return QString();
-}
-#ifndef TDESKTOP_DISABLE_GTK_INTEGRATION
-
-void loadPixbuf(QImage image) {
-	int w = image.width(), h = image.height(), perline = image.bytesPerLine(), s = image.byteCount();
-	_trayPixbufData.resize(w * h * 4);
-	uchar *result = (uchar*)_trayPixbufData.data(), *bytes = image.bits();
-	for (int32 y = 0; y < h; ++y) {
-		for (int32 x = 0; x < w; ++x) {
-			int32 offset = (y * w + x) * 4, srcoff = y * perline + x * 4;
-			result[offset + GTK_RED  ] = bytes[srcoff + QT_RED  ];
-			result[offset + GTK_GREEN] = bytes[srcoff + QT_GREEN];
-			result[offset + GTK_BLUE ] = bytes[srcoff + QT_BLUE ];
-			result[offset + GTK_ALPHA] = bytes[srcoff + QT_ALPHA];
+#ifndef TDESKTOP_DISABLE_DBUS_INTEGRATION
+static bool NeedTrayIconFile() {
+	// Hack for indicator-application, which doesn't handle icons sent across D-Bus:
+	// save the icon to a temp file and set the icon name to that filename.
+	static const auto TrayIconFileNeeded = [&] {
+		auto necessary = false;
+		const auto session = QDBusConnection::sessionBus();
+		const auto pid = session.interface()
+			->servicePid(kSNIWatcherService.utf16()).value();
+		const auto processName = ProcessNameByPID(QString::number(pid));
+		necessary = processName.endsWith(
+			qsl("indicator-application-service"));
+		if (!necessary) {
+			// Accessing to process name might be not allowed if the application
+			// is confined, thus we can just rely on the current desktop in use
+			necessary = DesktopEnvironment::IsUnity()
+				|| DesktopEnvironment::IsMATE();
 		}
-	}
-
-	if (_trayPixbuf) Libs::g_object_unref(_trayPixbuf);
-	_trayPixbuf = Libs::gdk_pixbuf_new_from_data(result, GDK_COLORSPACE_RGB, true, 8, w, h, w * 4, 0, 0);
+		return necessary;
+	}();
+	return TrayIconFileNeeded;
 }

-void _trayMenuCallback(GtkMenu *menu, gpointer data) {
-	for (int32 i = 0, l = _trayItems.size(); i < l; ++i) {
-		if ((void*)_trayItems.at(i).first == (void*)menu) {
-			QMetaObject::invokeMethod(_trayItems.at(i).second, "triggered");
-		}
-	}
+static inline QString TrayIconFileTemplate() {
+	static const auto TempFileTemplate = AppRuntimeDirectory()
+		+ kTrayIconFilename.utf16();
+	return TempFileTemplate;
 }

-static gboolean _trayIconCheck(gpointer/* pIn*/) {
-	if (useStatusIcon && !trayIconChecked) {
-		if (Libs::gtk_status_icon_is_embedded(_trayIcon)) {
-			trayIconChecked = true;
-			cSetSupportTray(true);
-			if (Global::started()) {
-				Global::RefWorkMode().setForced(Global::WorkMode().value(), true);
-			}
-			if (App::wnd()) {
-				Notify::unreadCounterUpdated();
-				App::wnd()->updateTrayMenu();
-			}
-		}
-	}
-	return FALSE;
+std::unique_ptr<QTemporaryFile> TrayIconFile(
+		const QPixmap &icon, QObject *parent) {
+	auto ret = std::make_unique<QTemporaryFile>(
+		TrayIconFileTemplate(),
+		parent);
+	ret->open();
+	icon.save(ret.get());
+	ret->close();
+	return ret;
 }
+#endif // !TDESKTOP_DISABLE_DBUS_INTEGRATION

-#endif // !TDESKTOP_DISABLE_GTK_INTEGRATION
+bool IsSNIAvailable() {
+	static const auto SNIAvailable = [&] {
+#ifndef TDESKTOP_DISABLE_DBUS_INTEGRATION
+		QDBusInterface systrayHost(
+			kSNIWatcherService.utf16(),
+			qsl("/StatusNotifierWatcher"),
+			kSNIWatcherService.utf16());
+
+		return systrayHost.isValid()
+			&& systrayHost
+				.property("IsStatusNotifierHostRegistered")
+				.toBool();
+#endif // !TDESKTOP_DISABLE_DBUS_INTEGRATION
+
+		return false;
+	}();
+
+	return SNIAvailable;
+}

 quint32 djbStringHash(QString string) {
 	quint32 hash = 5381;
@@ -278,71 +240,106 @@ quint32 djbStringHash(QString string) {

 MainWindow::MainWindow(not_null<Window::Controller*> controller)
 : Window::MainWindow(controller) {
-	connect(&_psCheckStatusIconTimer, SIGNAL(timeout()), this, SLOT(psStatusIconCheck()));
-	_psCheckStatusIconTimer.setSingleShot(false);
-
-	connect(&_psUpdateIndicatorTimer, SIGNAL(timeout()), this, SLOT(psUpdateIndicator()));
-	_psUpdateIndicatorTimer.setSingleShot(true);
 }

 bool MainWindow::hasTrayIcon() const {
-#ifndef TDESKTOP_DISABLE_GTK_INTEGRATION
-	return trayIcon || ((useAppIndicator || (useStatusIcon && trayIconChecked)) && (Global::WorkMode().value() != dbiwmWindowOnly));
+#ifndef TDESKTOP_DISABLE_DBUS_INTEGRATION
+	return trayIcon || _sniTrayIcon;
 #else
 	return trayIcon;
-#endif // !TDESKTOP_DISABLE_GTK_INTEGRATION
-}
-
-void MainWindow::psStatusIconCheck() {
-#ifndef TDESKTOP_DISABLE_GTK_INTEGRATION
-	_trayIconCheck(0);
-#endif // !TDESKTOP_DISABLE_GTK_INTEGRATION
-	if (cSupportTray() || !--_psCheckStatusIconLeft) {
-		_psCheckStatusIconTimer.stop();
-		return;
-	}
+#endif // !TDESKTOP_DISABLE_DBUS_INTEGRATION
 }

 void MainWindow::psShowTrayMenu() {
+	if (!IsSNIAvailable()) {
+		_trayIconMenuXEmbed->popup(QCursor::pos());
+	}
 }

 void MainWindow::psTrayMenuUpdated() {
-#ifndef TDESKTOP_DISABLE_GTK_INTEGRATION
-	if (noQtTrayIcon && (useAppIndicator || useStatusIcon)) {
-		const QList<QAction*> &actions = trayIconMenu->actions();
-		if (_trayItems.isEmpty()) {
-			DEBUG_LOG(("Creating tray menu!"));
-			for (int32 i = 0, l = actions.size(); i != l; ++i) {
-				GtkWidget *item = Libs::gtk_menu_item_new_with_label(actions.at(i)->text().toUtf8());
-				Libs::gtk_menu_shell_append(Libs::gtk_menu_shell_cast(_trayMenu), item);
-				Libs::g_signal_connect_helper(item, "activate", G_CALLBACK(_trayMenuCallback), this);
-				Libs::gtk_widget_show(item);
-				Libs::gtk_widget_set_sensitive(item, actions.at(i)->isEnabled());
-
-				_trayItems.push_back(qMakePair(item, actions.at(i)));
-			}
-		} else {
-			DEBUG_LOG(("Updating tray menu!"));
-			for (int32 i = 0, l = actions.size(); i != l; ++i) {
-				if (i < _trayItems.size()) {
-					Libs::gtk_menu_item_set_label(reinterpret_cast<GtkMenuItem*>(_trayItems.at(i).first), actions.at(i)->text().toUtf8());
-					Libs::gtk_widget_set_sensitive(_trayItems.at(i).first, actions.at(i)->isEnabled());
-				}
-			}
+#ifndef TDESKTOP_DISABLE_DBUS_INTEGRATION
+	if (IsSNIAvailable()) {
+		if (_sniTrayIcon && trayIconMenu) {
+			_sniTrayIcon->setContextMenu(trayIconMenu);
 		}
 	}
-#endif // !TDESKTOP_DISABLE_GTK_INTEGRATION
+#endif // !TDESKTOP_DISABLE_DBUS_INTEGRATION
 }

+#ifndef TDESKTOP_DISABLE_DBUS_INTEGRATION
+void MainWindow::setSNITrayIcon(
+		const QIcon &icon, const QPixmap &iconPixmap) {
+	if (!NeedTrayIconFile()) {
+		_sniTrayIcon->setIconByPixmap(icon);
+		_sniTrayIcon->setToolTipIconByPixmap(icon);
+	}
+
+	if (qEnvironmentVariableIsSet(kDisableTrayCounter.utf8())) {
+		const auto iconName = GetTrayIconName();
+		_sniTrayIcon->setIconByName(iconName);
+		_sniTrayIcon->setToolTipIconByName(iconName);
+	} else if (NeedTrayIconFile()) {
+		_trayIconFile = TrayIconFile(iconPixmap, this);
+
+		if (_trayIconFile) {
+			_sniTrayIcon->setIconByName(_trayIconFile->fileName());
+			_sniTrayIcon->setToolTipIconByName(_trayIconFile->fileName());
+		}
+	}
+}
+
+void MainWindow::attachToSNITrayIcon() {
+	_sniTrayIcon->setToolTipTitle(AppName.utf16());
+	connect(_sniTrayIcon,
+		&StatusNotifierItem::activateRequested,
+		this,
+		[=](const QPoint &) {
+			Core::Sandbox::Instance().customEnterFromEventLoop([&] {
+				handleTrayIconActication(QSystemTrayIcon::Trigger);
+			});
+	});
+	connect(_sniTrayIcon,
+		&StatusNotifierItem::secondaryActivateRequested,
+		this,
+		[=](const QPoint &) {
+			Core::Sandbox::Instance().customEnterFromEventLoop([&] {
+				handleTrayIconActication(QSystemTrayIcon::MiddleClick);
+			});
+	});
+	updateTrayMenu();
+}
+#endif // !TDESKTOP_DISABLE_DBUS_INTEGRATION
+
 void MainWindow::psSetupTrayIcon() {
-	if (noQtTrayIcon) {
-		if (!cSupportTray()) return;
+	const auto iconPixmap = QPixmap::fromImage(TrayIconImageGen());
+	const auto icon = QIcon(iconPixmap);
+
+	if (IsSNIAvailable()) {
+#ifndef TDESKTOP_DISABLE_DBUS_INTEGRATION
+		LOG(("Using SNI tray icon."));
+		if (!_sniTrayIcon) {
+			_sniTrayIcon = new StatusNotifierItem(
+				QCoreApplication::applicationName(),
+				this);
+
+			_sniTrayIcon->setTitle(QCoreApplication::applicationName());
+			setSNITrayIcon(icon, iconPixmap);
+
+			attachToSNITrayIcon();
+		}
 		updateIconCounters();
+#endif // !TDESKTOP_DISABLE_DBUS_INTEGRATION
 	} else {
 		LOG(("Using Qt tray icon."));
+
+		if (!_trayIconMenuXEmbed) {
+			_trayIconMenuXEmbed = new Ui::PopupMenu(nullptr, trayIconMenu);
+			_trayIconMenuXEmbed->deleteOnHide(false);
+		}
+
 		if (!trayIcon) {
 			trayIcon = new QSystemTrayIcon(this);
-			trayIcon->setIcon(QIcon(QPixmap::fromImage(_trayIconImageGen(true))));
+			trayIcon->setIcon(icon);

 			attachToTrayIcon(trayIcon);
 		}
@@ -356,14 +353,14 @@ void MainWindow::workmodeUpdated(DBIWorkMode mode) {
 	if (!cSupportTray()) return;

 	if (mode == dbiwmWindowOnly) {
-		if (noQtTrayIcon) {
-#ifndef TDESKTOP_DISABLE_GTK_INTEGRATION
-			if (useAppIndicator) {
-				Libs::app_indicator_set_status(_trayIndicator, APP_INDICATOR_STATUS_PASSIVE);
-			} else if (useStatusIcon) {
-				Libs::gtk_status_icon_set_visible(_trayIcon, false);
+		if (IsSNIAvailable()) {
+#ifndef TDESKTOP_DISABLE_DBUS_INTEGRATION
+			if (_sniTrayIcon) {
+				_sniTrayIcon->setContextMenu(0);
+				_sniTrayIcon->deleteLater();
 			}
-#endif // !TDESKTOP_DISABLE_GTK_INTEGRATION
+			_sniTrayIcon = 0;
+#endif // !TDESKTOP_DISABLE_DBUS_INTEGRATION
 		} else {
 			if (trayIcon) {
 				trayIcon->setContextMenu(0);
@@ -372,35 +369,10 @@ void MainWindow::workmodeUpdated(DBIWorkMode mode) {
 			trayIcon = 0;
 		}
 	} else {
-		if (noQtTrayIcon) {
-#ifndef TDESKTOP_DISABLE_GTK_INTEGRATION
-			if (useAppIndicator) {
-				Libs::app_indicator_set_status(_trayIndicator, APP_INDICATOR_STATUS_ACTIVE);
-			} else if (useStatusIcon) {
-				Libs::gtk_status_icon_set_visible(_trayIcon, true);
-			}
-#endif // !TDESKTOP_DISABLE_GTK_INTEGRATION
-		} else {
-			psSetupTrayIcon();
-		}
+		psSetupTrayIcon();
 	}
 }

-void MainWindow::psUpdateIndicator() {
-#ifndef TDESKTOP_DISABLE_GTK_INTEGRATION
-	_psUpdateIndicatorTimer.stop();
-	_psLastIndicatorUpdate = crl::now();
-	QFileInfo iconFile(_trayIconImageFile());
-	if (iconFile.exists()) {
-		QByteArray path = QFile::encodeName(iconFile.absoluteFilePath()), name = QFile::encodeName(iconFile.fileName());
-		name = name.mid(0, name.size() - 4);
-		Libs::app_indicator_set_icon_full(_trayIndicator, path.constData(), name);
-	} else {
-		useAppIndicator = false;
-	}
-#endif // !TDESKTOP_DISABLE_GTK_INTEGRATION
-}
-
 void MainWindow::unreadCounterChangedHook() {
 	setWindowTitle(titleText());
 	updateIconCounters();
@@ -410,208 +382,91 @@ void MainWindow::updateIconCounters() {
 	updateWindowIcon();

 #ifndef TDESKTOP_DISABLE_DBUS_INTEGRATION
-	if (useUnityCount) {
+	if (UseUnityCount) {
 		const auto counter = Core::App().unreadBadge();
 		QVariantMap dbusUnityProperties;
 		if (counter > 0) {
 			// Gnome requires that count is a 64bit integer
-			dbusUnityProperties.insert("count", (qint64) ((counter > 9999) ? 9999 : (counter)));
+			dbusUnityProperties.insert(
+				"count",
+				(qint64) ((counter > 9999)
+					? 9999
+					: (counter)));
 			dbusUnityProperties.insert("count-visible", true);
 		} else {
 			dbusUnityProperties.insert("count-visible", false);
 		}
-		QDBusMessage signal = QDBusMessage::createSignal(_dbusPath, "com.canonical.Unity.LauncherEntry", "Update");
-		signal << "application://" + _desktopFile;
+		QDBusMessage signal = QDBusMessage::createSignal(
+			UnityCountDBusPath,
+			"com.canonical.Unity.LauncherEntry",
+			"Update");
+		signal << "application://" + UnityCountDesktopFile;
 		signal << dbusUnityProperties;
 		QDBusConnection::sessionBus().send(signal);
 	}
-#endif
+#endif // !TDESKTOP_DISABLE_DBUS_INTEGRATION

-	if (noQtTrayIcon) {
-#ifndef TDESKTOP_DISABLE_GTK_INTEGRATION
-		if (useAppIndicator) {
-			if (crl::now() > _psLastIndicatorUpdate + 1000) {
-				psUpdateIndicator();
-			} else if (!_psUpdateIndicatorTimer.isActive()) {
-				_psUpdateIndicatorTimer.start(100);
-			}
-		} else if (useStatusIcon && trayIconChecked) {
-			loadPixbuf(_trayIconImageGen(true));
-			Libs::gtk_status_icon_set_from_pixbuf(_trayIcon, _trayPixbuf);
+	const auto iconPixmap = QPixmap::fromImage(TrayIconImageGen());
+	const auto icon = QIcon(iconPixmap);
+
+	if (IsSNIAvailable()) {
+#ifndef TDESKTOP_DISABLE_DBUS_INTEGRATION
+		if (_sniTrayIcon) {
+			setSNITrayIcon(icon, iconPixmap);
 		}
-#endif // !TDESKTOP_DISABLE_GTK_INTEGRATION
+#endif // !TDESKTOP_DISABLE_DBUS_INTEGRATION
 	} else if (trayIcon) {
-		trayIcon->setIcon(QIcon(QPixmap::fromImage(_trayIconImageGen(true))));
+		trayIcon->setIcon(icon);
 	}
 }

 void MainWindow::LibsLoaded() {
-	noQtTrayIcon = !DesktopEnvironment::TryQtTrayIcon();
-#ifndef TDESKTOP_DISABLE_GTK_INTEGRATION
-	tryAppIndicator = DesktopEnvironment::PreferAppIndicatorTrayIcon();
-#endif // !TDESKTOP_DISABLE_GTK_INTEGRATION
+#ifndef TDESKTOP_DISABLE_DBUS_INTEGRATION
+	qDBusRegisterMetaType<ToolTip>();
+	qDBusRegisterMetaType<IconPixmap>();
+	qDBusRegisterMetaType<IconPixmapList>();
+#endif // !TDESKTOP_DISABLE_DBUS_INTEGRATION

-	LOG(("Tray Icon: Try Qt = %1, Prefer appindicator = %2").arg(Logs::b(!noQtTrayIcon)).arg(Logs::b(tryAppIndicator)));
-
-	if (noQtTrayIcon) cSetSupportTray(false);
-
-#ifndef TDESKTOP_DISABLE_GTK_INTEGRATION
-	useGtkBase = (Libs::gtk_init_check != nullptr)
-			&& (Libs::gtk_menu_new != nullptr)
-			&& (Libs::gtk_menu_get_type != nullptr)
-			&& (Libs::gtk_menu_item_new_with_label != nullptr)
-			&& (Libs::gtk_menu_item_set_label != nullptr)
-			&& (Libs::gtk_menu_shell_append != nullptr)
-			&& (Libs::gtk_menu_shell_get_type != nullptr)
-			&& (Libs::gtk_widget_show != nullptr)
-			&& (Libs::gtk_widget_get_toplevel != nullptr)
-			&& (Libs::gtk_widget_get_visible != nullptr)
-			&& (Libs::gtk_widget_set_sensitive != nullptr)
-			&& (Libs::g_type_check_instance_cast != nullptr)
-			&& (Libs::g_signal_connect_data != nullptr)
-			&& (Libs::g_object_ref_sink != nullptr)
-			&& (Libs::g_object_unref != nullptr);
-
-	useAppIndicator = useGtkBase
-			&& (Libs::app_indicator_new != nullptr)
-			&& (Libs::app_indicator_set_status != nullptr)
-			&& (Libs::app_indicator_set_menu != nullptr)
-			&& (Libs::app_indicator_set_icon_full != nullptr);
-
-	if (tryAppIndicator && useGtkBase && useAppIndicator) {
-		noQtTrayIcon = true;
-		cSetSupportTray(false);
+	if (!IsSNIAvailable()) {
+		_trayIconSize = 22;
 	}
-
-	useStatusIcon = (Libs::gdk_init_check != nullptr)
-			&& (Libs::gdk_pixbuf_new_from_data != nullptr)
-			&& (Libs::gtk_status_icon_new_from_pixbuf != nullptr)
-			&& (Libs::gtk_status_icon_set_from_pixbuf != nullptr)
-			&& (Libs::gtk_status_icon_new_from_file != nullptr)
-			&& (Libs::gtk_status_icon_set_from_file != nullptr)
-			&& (Libs::gtk_status_icon_set_title != nullptr)
-			&& (Libs::gtk_status_icon_set_tooltip_text != nullptr)
-			&& (Libs::gtk_status_icon_set_visible != nullptr)
-			&& (Libs::gtk_status_icon_is_embedded != nullptr)
-			&& (Libs::gtk_status_icon_get_geometry != nullptr)
-			&& (Libs::gtk_status_icon_position_menu != nullptr)
-			&& (Libs::gtk_menu_popup != nullptr)
-			&& (Libs::gtk_get_current_event_time != nullptr)
-			&& (Libs::g_idle_add != nullptr);
-	if (useStatusIcon) {
-		DEBUG_LOG(("Status icon api loaded!"));
-	}
-#endif // !TDESKTOP_DISABLE_GTK_INTEGRATION
-}
-
-void MainWindow::psCreateTrayIcon() {
-	if (!noQtTrayIcon) {
-		LOG(("Tray Icon: Using Qt tray icon, available: %1").arg(Logs::b(QSystemTrayIcon::isSystemTrayAvailable())));
-		cSetSupportTray(QSystemTrayIcon::isSystemTrayAvailable());
-		return;
-	}
-
-#ifndef TDESKTOP_DISABLE_GTK_INTEGRATION
-	if (useAppIndicator) {
-		DEBUG_LOG(("Trying to create AppIndicator"));
-		_trayMenu = Libs::gtk_menu_new();
-		if (_trayMenu) {
-			DEBUG_LOG(("Created gtk menu for appindicator!"));
-			QFileInfo iconFile(_trayIconImageFile());
-			if (iconFile.exists()) {
-				QByteArray path = QFile::encodeName(iconFile.absoluteFilePath());
-				_trayIndicator = Libs::app_indicator_new("Telegram Desktop", path.constData(), APP_INDICATOR_CATEGORY_APPLICATION_STATUS);
-				if (_trayIndicator) {
-					LOG(("Tray Icon: Using appindicator tray icon."));
-				} else {
-					DEBUG_LOG(("Failed to app_indicator_new()!"));
-				}
-			} else {
-				useAppIndicator = false;
-				DEBUG_LOG(("Failed to create image file!"));
-			}
-		} else {
-			DEBUG_LOG(("Failed to gtk_menu_new()!"));
-		}
-		if (_trayMenu && _trayIndicator) {
-			Libs::app_indicator_set_status(_trayIndicator, APP_INDICATOR_STATUS_ACTIVE);
-			Libs::app_indicator_set_menu(_trayIndicator, Libs::gtk_menu_cast(_trayMenu));
-			useStatusIcon = false;
-		} else {
-			DEBUG_LOG(("AppIndicator failed!"));
-			useAppIndicator = false;
-		}
-	}
-	if (useStatusIcon) {
-		if (Libs::gdk_init_check(0, 0)) {
-			if (!_trayMenu) _trayMenu = Libs::gtk_menu_new();
-			if (_trayMenu) {
-				loadPixbuf(_trayIconImageGen(true));
-				_trayIcon = Libs::gtk_status_icon_new_from_pixbuf(_trayPixbuf);
-				if (_trayIcon) {
-					LOG(("Tray Icon: Using GTK status tray icon."));
-
-					Libs::g_signal_connect_helper(_trayIcon, "popup-menu", GCallback(_trayIconPopup), _trayMenu);
-					Libs::g_signal_connect_helper(_trayIcon, "activate", GCallback(_trayIconActivate), _trayMenu);
-					Libs::g_signal_connect_helper(_trayIcon, "size-changed", GCallback(_trayIconResized), _trayMenu);
-
-					Libs::gtk_status_icon_set_title(_trayIcon, "Telegram Desktop");
-					Libs::gtk_status_icon_set_tooltip_text(_trayIcon, "Telegram Desktop");
-					Libs::gtk_status_icon_set_visible(_trayIcon, true);
-				} else {
-					useStatusIcon = false;
-				}
-			} else {
-				useStatusIcon = false;
-			}
-		} else {
-			useStatusIcon = false;
-		}
-	}
-	if (!useStatusIcon && !useAppIndicator) {
-		LOG(("Tray Icon: Not able to use any tray icon :("));
-		if (_trayMenu) {
-			Libs::g_object_ref_sink(_trayMenu);
-			Libs::g_object_unref(_trayMenu);
-			_trayMenu = nullptr;
-		}
-	}
-	cSetSupportTray(useAppIndicator);
-	if (useStatusIcon) {
-		Libs::g_idle_add((GSourceFunc)_trayIconCheck, 0);
-		_psCheckStatusIconTimer.start(100);
-	} else {
-		workmodeUpdated(Global::WorkMode().value());
-	}
-#endif // !TDESKTOP_DISABLE_GTK_INTEGRATION
 }

 void MainWindow::psFirstShow() {
-	psCreateTrayIcon();
+	const auto trayAvailable = IsSNIAvailable()
+		|| QSystemTrayIcon::isSystemTrayAvailable();
+
+	LOG(("System tray available: %1").arg(Logs::b(trayAvailable)));
+	cSetSupportTray(trayAvailable);

 #ifndef TDESKTOP_DISABLE_DBUS_INTEGRATION
 	if (QDBusInterface("com.canonical.Unity", "/").isValid()) {
-		std::vector<QString> possibleDesktopFiles = {
+		const std::vector<QString> possibleDesktopFiles = {
 			GetLauncherFilename(),
 			"Telegram.desktop"
 		};

-		for (auto it = possibleDesktopFiles.begin(); it != possibleDesktopFiles.end(); it++) {
-			if (!QStandardPaths::locate(QStandardPaths::ApplicationsLocation, *it).isEmpty()) {
-				_desktopFile = *it;
-				LOG(("Found Unity Launcher entry %1!").arg(_desktopFile));
-				useUnityCount = true;
+		for (auto it = possibleDesktopFiles.begin();
+			it != possibleDesktopFiles.end(); it++) {
+			if (!QStandardPaths::locate(
+				QStandardPaths::ApplicationsLocation, *it).isEmpty()) {
+				UnityCountDesktopFile = *it;
+				LOG(("Found Unity Launcher entry %1!")
+					.arg(UnityCountDesktopFile));
+				UseUnityCount = true;
 				break;
 			}
 		}
-		if (!useUnityCount) {
+		if (!UseUnityCount) {
 			LOG(("Could not get Unity Launcher entry!"));
 		}
-		_dbusPath = "/com/canonical/unity/launcherentry/" + QString::number(djbStringHash("application://" + _desktopFile));
+		UnityCountDBusPath = "/com/canonical/unity/launcherentry/"
+			+ QString::number(
+				djbStringHash("application://" + UnityCountDesktopFile));
 	} else {
 		LOG(("Not using Unity Launcher count."));
 	}
-#endif
+#endif // !TDESKTOP_DISABLE_DBUS_INTEGRATION

 	show();
 	if (cWindowPos().maximized) {
@@ -619,13 +474,15 @@ void MainWindow::psFirstShow() {
 		setWindowState(Qt::WindowMaximized);
 	}

-	if ((cLaunchMode() == LaunchModeAutoStart && cStartMinimized()) || cStartInTray()) {
+	if ((cLaunchMode() == LaunchModeAutoStart && cStartMinimized())
+		|| cStartInTray()) {
 		// If I call hide() synchronously here after show() then on Ubuntu 14.04
 		// it will show a window frame with transparent window body, without content.
 		// And to be able to "Show from tray" one more hide() will be required.
 		crl::on_main(this, [=] {
 			setWindowState(Qt::WindowMinimized);
-			if (Global::WorkMode().value() == dbiwmTrayOnly || Global::WorkMode().value() == dbiwmWindowAndTray) {
+			if (Global::WorkMode().value() == dbiwmTrayOnly
+				|| Global::WorkMode().value() == dbiwmWindowAndTray) {
 				hide();
 			} else {
 				show();
@@ -637,25 +494,11 @@ void MainWindow::psFirstShow() {
 }

 MainWindow::~MainWindow() {
-#ifndef TDESKTOP_DISABLE_GTK_INTEGRATION
-	if (_trayIcon) {
-		Libs::g_object_unref(_trayIcon);
-		_trayIcon = nullptr;
-	}
-	if (_trayPixbuf) {
-		Libs::g_object_unref(_trayPixbuf);
-		_trayPixbuf = nullptr;
-	}
-	if (_trayMenu) {
-		Libs::g_object_ref_sink(_trayMenu);
-		Libs::g_object_unref(_trayMenu);
-		_trayMenu = nullptr;
-	}
-	if (_trayIndicator) {
-		Libs::g_object_unref(_trayIndicator);
-		_trayIndicator = nullptr;
-	}
-#endif // !TDESKTOP_DISABLE_GTK_INTEGRATION
+#ifndef TDESKTOP_DISABLE_DBUS_INTEGRATION
+	delete _sniTrayIcon;
+#endif // !TDESKTOP_DISABLE_DBUS_INTEGRATION
+
+	delete _trayIconMenuXEmbed;
 }

 } // namespace Platform
--- a/Telegram/SourceFiles/platform/linux/main_window_linux.h
+++ b/Telegram/SourceFiles/platform/linux/main_window_linux.h
@@ -9,7 +9,12 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL

 #include "platform/platform_main_window.h"

-#include <QtCore/QTimer>
+#include "ui/widgets/popup_menu.h"
+
+#ifndef TDESKTOP_DISABLE_DBUS_INTEGRATION
+#include "statusnotifieritem.h"
+#include <QtCore/QTemporaryFile>
+#endif

 namespace Platform {

@@ -21,7 +26,12 @@ public:

 	void psFirstShow();

-	virtual QImage iconWithCounter(int size, int count, style::color bg, style::color fg, bool smallIcon) = 0;
+	virtual QImage iconWithCounter(
+		int size,
+		int count,
+		style::color bg,
+		style::color fg,
+		bool smallIcon) = 0;

 	static void LibsLoaded();

@@ -30,9 +40,6 @@ public:
 public slots:
 	void psShowTrayMenu();

-	void psStatusIconCheck();
-	void psUpdateIndicator();
-
 protected:
 	void unreadCounterChangedHook() override;

@@ -46,17 +53,26 @@ protected:
 	void psTrayMenuUpdated();
 	void psSetupTrayIcon();

-	virtual void placeSmallCounter(QImage &img, int size, int count, style::color bg, const QPoint &shift, style::color color) = 0;
+	virtual void placeSmallCounter(
+		QImage &img,
+		int size,
+		int count,
+		style::color bg,
+		const QPoint &shift,
+		style::color color) = 0;

 private:
+	Ui::PopupMenu *_trayIconMenuXEmbed = nullptr;
+
 	void updateIconCounters();
-	void psCreateTrayIcon();

-	QTimer _psCheckStatusIconTimer;
-	int _psCheckStatusIconLeft = 100;
+#ifndef TDESKTOP_DISABLE_DBUS_INTEGRATION
+	StatusNotifierItem *_sniTrayIcon = nullptr;
+	std::unique_ptr<QTemporaryFile> _trayIconFile = nullptr;

-	QTimer _psUpdateIndicatorTimer;
-	crl::time _psLastIndicatorUpdate = 0;
+	void setSNITrayIcon(const QIcon &icon, const QPixmap &iconPixmap);
+	void attachToSNITrayIcon();
+#endif // !TDESKTOP_DISABLE_DBUS_INTEGRATION

 };

--- a/Telegram/SourceFiles/platform/linux/specific_linux.cpp
+++ b/Telegram/SourceFiles/platform/linux/specific_linux.cpp
@@ -44,7 +44,7 @@ namespace {

 constexpr auto kDesktopFile = ":/misc/telegramdesktop.desktop"_cs;

-bool XDGDesktopPortalIsPresent = false;
+bool XDGDesktopPortalPresent = false;

 #ifndef TDESKTOP_DISABLE_DBUS_INTEGRATION
 void SandboxAutostart(bool autostart) {
@@ -196,13 +196,13 @@ bool InSnap() {
 }

 bool IsXDGDesktopPortalPresent() {
-	return XDGDesktopPortalIsPresent;
-};
+	return XDGDesktopPortalPresent;
+}

-QString CurrentExecutablePath(int argc, char *argv[]) {
+QString ProcessNameByPID(const QString &pid) {
 	constexpr auto kMaxPath = 1024;
 	char result[kMaxPath] = { 0 };
-	auto count = readlink("/proc/self/exe", result, kMaxPath);
+	auto count = readlink("/proc/" + pid.toLatin1() + "/exe", result, kMaxPath);
 	if (count > 0) {
 		auto filename = QFile::decodeName(result);
 		auto deletedPostfix = qstr(" (deleted)");
@@ -212,26 +212,53 @@ QString CurrentExecutablePath(int argc, char *argv[]) {
 		return filename;
 	}

+	return QString();
+}
+
+QString CurrentExecutablePath(int argc, char *argv[]) {
+	const auto processName = ProcessNameByPID(qsl("self"));
+
 	// Fallback to the first command line argument.
-	return argc ? QFile::decodeName(argv[0]) : QString();
+	return !processName.isEmpty()
+		? processName
+		: argc
+			? QFile::decodeName(argv[0])
+			: QString();
+}
+
+QString AppRuntimeDirectory() {
+	static const auto RuntimeDirectory = [&] {
+		auto runtimeDir = QStandardPaths::writableLocation(
+			QStandardPaths::RuntimeLocation);
+
+		if (InSandbox()) {
+			runtimeDir += qsl("/app/")
+				+ QString::fromLatin1(qgetenv("FLATPAK_ID"));
+		}
+
+		if (!QFileInfo::exists(runtimeDir)) { // non-systemd distros
+			runtimeDir = QDir::tempPath();
+		}
+
+		if (runtimeDir.isEmpty()) {
+			runtimeDir = qsl("/tmp/");
+		}
+
+		if (!runtimeDir.endsWith('/')) {
+			runtimeDir += '/';
+		}
+
+		return runtimeDir;
+	}();
+
+	return RuntimeDirectory;
 }

 QString SingleInstanceLocalServerName(const QString &hash) {
-	const auto runtimeDir = QStandardPaths::writableLocation(
-		QStandardPaths::RuntimeLocation);
-
-	if (InSandbox()) {
-		return runtimeDir
-			+ qsl("/app/")
-			+ QString::fromLatin1(qgetenv("FLATPAK_ID"))
-			+ '/' + hash;
-	} else if (QFileInfo::exists(runtimeDir) && InSnap()) {
-		return runtimeDir + '/' + hash;
-	} else if (QFileInfo::exists(runtimeDir)) {
-		return runtimeDir + '/' + hash + '-' + cGUIDStr();
-	} else { // non-systemd distros
-		return QStandardPaths::writableLocation(QStandardPaths::TempLocation)
-			+ '/' + hash + '-' + cGUIDStr();
+	if (InSandbox() || InSnap()) {
+		return AppRuntimeDirectory() + hash;
+	} else {
+		return AppRuntimeDirectory() + hash + '-' + cGUIDStr();
 	}
 }

@@ -381,12 +408,12 @@ void start() {

 #if !defined(TDESKTOP_DISABLE_DBUS_INTEGRATION) && defined(TDESKTOP_FORCE_GTK_FILE_DIALOG)
 	LOG(("Checking for XDG Desktop Portal..."));
-	XDGDesktopPortalIsPresent = QDBusInterface(
+	XDGDesktopPortalPresent = QDBusInterface(
 		"org.freedesktop.portal.Desktop",
 		"/org/freedesktop/portal/desktop").isValid();

 	// this can give us a chance to use a proper file dialog for current session
-	if(XDGDesktopPortalIsPresent) {
+	if(XDGDesktopPortalPresent) {
 		LOG(("XDG Desktop Portal is present!"));
 		qputenv("QT_QPA_PLATFORMTHEME", "xdgdesktopportal");
 	} else {
@@ -467,6 +494,8 @@ bool OpenSystemSettings(SystemSettingsType type) {
 			add("kcmshell4 phonon");
 		} else if (DesktopEnvironment::IsGnome()) {
 			add("gnome-control-center sound");
+		} else if (DesktopEnvironment::IsMATE()) {
+			add("mate-volume-control");
 		}
 		add("pavucontrol-qt");
 		add("pavucontrol");
--- a/Telegram/SourceFiles/platform/linux/specific_linux.h
+++ b/Telegram/SourceFiles/platform/linux/specific_linux.h
@@ -25,8 +25,10 @@ bool InSnap();

 bool IsXDGDesktopPortalPresent();

+QString ProcessNameByPID(const QString &pid);
 QString CurrentExecutablePath(int argc, char *argv[]);

+QString AppRuntimeDirectory();
 QString SingleInstanceLocalServerName(const QString &hash);

 QString GetLauncherBasename();