Add 'respect system dark mode' checkbox.

Telegram/Resources/langs/lang.strings

@@ -434,6 +434,11 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 "lng_settings_sensitive_disable_filtering" = "Disable filtering";
 "lng_settings_sensitive_about" = "Display sensitive media in public channels on all your Telegram devices.";
 
+"lng_settings_auto_night_mode" = "Auto-Night mode";
+"lng_settings_auto_night_enabled" = "Match the system settings";
+"lng_settings_auto_night_warning" = "You have enabled auto-night mode. If you want to change the dark mode settings, you'll need to disable it first.";
+"lng_settings_auto_night_disable" = "Disable";
+
 "lng_settings_spellchecker" = "Spell checker";
 "lng_settings_system_spellchecker" = "Use system spell checker";
 "lng_settings_custom_spellchecker" = "Use spell checker";

Telegram/SourceFiles/core/application.cpp

@@ -212,25 +212,9 @@ void Application::run() {
 	Ui::InitTextOptions();
 	Ui::Emoji::Init();
 	startEmojiImageLoader();
+	startSystemDarkModeViewer();
 	Media::Player::start(_audio.get());
 
-	const auto darkModeChanged = [] {
-		const auto darkMode = Core::App().settings().systemDarkMode();
-		const auto darkModeEnabled = Core::App().settings().systemDarkModeEnabled();
-		if (darkModeEnabled
-			&& darkMode.has_value()
-			&& (*darkMode != Window::Theme::IsNightMode())) {
-			Window::Theme::ToggleNightMode();
-			Window::Theme::KeepApplied();
-		}
-	};
-
-	Core::App().settings().systemDarkModeChanges(
-	) | rpl::start_with_next(darkModeChanged, _lifetime);
-
-	Core::App().settings().systemDarkModeEnabledChanges(
-	) | rpl::start_with_next(darkModeChanged, _lifetime);
-
 	style::ShortAnimationPlaying(
 	) | rpl::start_with_next([=](bool playing) {
 		if (playing) {
@@ -250,10 +234,10 @@ void Application::run() {
 	QMimeDatabase().mimeTypeForName(qsl("text/plain"));
 
 	_window = std::make_unique<Window::Controller>();
+
 	_domain->activeChanges(
 	) | rpl::start_with_next([=](not_null<Main::Account*> account) {
 		_window->showAccount(account);
-		Core::App().settings().setSystemDarkMode(Platform::IsDarkMode());
 	}, _window->widget()->lifetime());
 
 	QCoreApplication::instance()->installEventFilter(this);
@@ -267,16 +251,8 @@ void Application::run() {
 
 	// Depend on activeWindow() for now :(
 	startShortcuts();
-
 	App::initMedia();
-
-	const auto state = _domain->start(QByteArray());
-	if (state == Storage::StartResult::IncorrectPasscode) {
-		Global::SetLocalPasscode(true);
-		Global::RefLocalPasscodeChanged().notify();
-		lockByPasscode();
-		DEBUG_LOG(("Application Info: passcode needed..."));
-	}
+	startDomain();
 
 	_window->widget()->show();
 
@@ -298,6 +274,47 @@ void Application::run() {
 	}
 }
 
+void Application::startDomain() {
+	const auto state = _domain->start(QByteArray());
+	if (state != Storage::StartResult::IncorrectPasscodeLegacy) {
+		// In case of non-legacy passcoded app all global settings are ready.
+		startSettingsAndBackground();
+	}
+	if (state != Storage::StartResult::Success) {
+		Global::SetLocalPasscode(true);
+		Global::RefLocalPasscodeChanged().notify();
+		lockByPasscode();
+		DEBUG_LOG(("Application Info: passcode needed..."));
+	}
+}
+
+void Application::startSettingsAndBackground() {
+	Local::rewriteSettingsIfNeeded();
+	Window::Theme::Background()->start();
+	checkSystemDarkMode();
+}
+
+void Application::checkSystemDarkMode() {
+	const auto maybeDarkMode = _settings.systemDarkMode();
+	const auto darkModeEnabled = _settings.systemDarkModeEnabled();
+	const auto needToSwitch = darkModeEnabled
+		&& maybeDarkMode
+		&& (*maybeDarkMode != Window::Theme::IsNightMode());
+	if (needToSwitch) {
+		Window::Theme::ToggleNightMode();
+		Window::Theme::KeepApplied();
+	}
+}
+
+void Application::startSystemDarkModeViewer() {
+	rpl::merge(
+		_settings.systemDarkModeChanges() | rpl::to_empty,
+		_settings.systemDarkModeEnabledChanges() | rpl::to_empty
+	) | rpl::start_with_next([=] {
+		checkSystemDarkMode();
+	}, _lifetime);
+}
+
 auto Application::prepareEmojiSourceImages()
 -> std::shared_ptr<Ui::Emoji::UniversalImages> {
 	const auto &images = Ui::Emoji::SourceImages();

Telegram/SourceFiles/core/application.h

@@ -140,6 +140,7 @@ public:
 	[[nodiscard]] QWidget *getFileDialogParent();
 	void notifyFileDialogShown(bool shown);
 	[[nodiscard]] QWidget *getModalParent();
+	void checkSystemDarkMode();
 
 	// Media view interface.
 	void checkMediaViewActivation();
@@ -161,6 +162,7 @@ public:
 		return _logoNoMargin;
 	}
 
+	void startSettingsAndBackground();
 	[[nodiscard]] Settings &settings() {
 		return _settings;
 	}
@@ -290,7 +292,9 @@ private:
 		-> std::shared_ptr<Ui::Emoji::UniversalImages>;
 	void startLocalStorage();
 	void startShortcuts();
+	void startDomain();
 	void startEmojiImageLoader();
+	void startSystemDarkModeViewer();
 
 	void stateChanged(Qt::ApplicationState state);
 

Telegram/SourceFiles/main/main_domain.cpp

@@ -31,7 +31,9 @@ Domain::Domain(const QString &dataName)
 , _local(std::make_unique<Storage::Domain>(this, dataName)) {
 	_active.changes(
 	) | rpl::take(1) | rpl::start_with_next([] {
-		Local::rewriteSettingsIfNeeded();
+		// In case we had a legacy passcoded app we start settings here.
+		Core::App().startSettingsAndBackground();
+
 		Core::App().notifications().createManager();
 	}, _lifetime);
 

Telegram/SourceFiles/platform/linux/main_window_linux.cpp

@@ -426,7 +426,7 @@ void MainWindow::initHook() {
 		|| QSystemTrayIcon::isSystemTrayAvailable();
 
 	LOG(("System tray available: %1").arg(Logs::b(trayAvailable)));
-	cSetSupportTray(trayAvailable);
+	Platform::SetTrayIconSupported(trayAvailable);
 
 #ifndef TDESKTOP_DISABLE_DBUS_INTEGRATION
 	auto sniWatcher = new QDBusServiceWatcher(
@@ -591,9 +591,9 @@ void MainWindow::onSNIOwnerChanged(
 	const auto trayAvailable = SNIAvailable
 		|| QSystemTrayIcon::isSystemTrayAvailable();
 
-	cSetSupportTray(trayAvailable);
+	Platform::SetTrayIconSupported(trayAvailable);
 
-	if (cSupportTray()) {
+	if (trayAvailable) {
 		psSetupTrayIcon();
 	} else {
 		LOG(("System tray is not available."));
@@ -654,9 +654,9 @@ void MainWindow::psSetupTrayIcon() {
 }
 
 void MainWindow::workmodeUpdated(DBIWorkMode mode) {
-	if (!cSupportTray()) return;
-
-	if (mode == dbiwmWindowOnly) {
+	if (!Platform::TrayIconSupported()) {
+		return;
+	} else if (mode == dbiwmWindowOnly) {
 #ifndef TDESKTOP_DISABLE_DBUS_INTEGRATION
 		if (_sniTrayIcon) {
 			_sniTrayIcon->setContextMenu(0);

Telegram/SourceFiles/platform/linux/specific_linux.cpp

@@ -69,6 +69,8 @@ constexpr auto kPropertiesInterface = "org.freedesktop.DBus.Properties"_cs;
 
 QStringList PlatformThemes;
 
+bool IsTrayIconSupported = true;
+
 #ifndef TDESKTOP_DISABLE_DBUS_INTEGRATION
 void PortalAutostart(bool autostart, bool silent = false) {
 	QVariantMap options;
@@ -871,8 +873,7 @@ std::optional<crl::time> LastUserInputTime() {
 
 std::optional<bool> IsDarkMode() {
 #ifndef TDESKTOP_DISABLE_GTK_INTEGRATION
-	if (Libs::GtkSettingSupported()
-		&& Libs::GtkLoaded()) {
+	if (Libs::GtkSettingSupported() && Libs::GtkLoaded()) {
 		if (Libs::gtk_check_version != nullptr
 			&& !Libs::gtk_check_version(3, 0, 0)
 			&& Libs::GtkSetting<gboolean>("gtk-application-prefer-dark-theme")) {
@@ -897,6 +898,14 @@ bool AutostartSupported() {
 	return !InSnap();
 }
 
+bool TrayIconSupported() {
+	return IsTrayIconSupported;
+}
+
+void SetTrayIconSupported(bool supported) {
+	IsTrayIconSupported = supported;
+}
+
 void FallbackFontConfigCheckBegin() {
 	if (!CheckFontConfigCrash()) {
 		return;

Telegram/SourceFiles/platform/linux/specific_linux.h

@@ -47,6 +47,7 @@ void FallbackFontConfigCheckBegin();
 void FallbackFontConfigCheckEnd();
 
 bool GtkClipboardSupported();
+void SetTrayIconSupported(bool supported);
 
 } // namespace Platform
 

Telegram/SourceFiles/platform/mac/specific_mac.h

@@ -40,6 +40,14 @@ inline bool StartSystemResize(QWindow *window, Qt::Edges edges) {
 	return false;
 }
 
+inline bool AutostartSupported() {
+	return false;
+}
+
+inline bool TrayIconSupported() {
+	return true;
+}
+
 namespace ThirdParty {
 
 inline void start() {

Telegram/SourceFiles/platform/mac/specific_mac.mm

@@ -263,10 +263,6 @@ void IgnoreApplicationActivationRightNow() {
 	objc_ignoreApplicationActivationRightNow();
 }
 
-bool AutostartSupported() {
-	return false;
-}
-
 } // namespace Platform
 
 void psNewVersion() {

Telegram/SourceFiles/platform/platform_specific.h

@@ -48,6 +48,7 @@ bool OpenSystemSettings(SystemSettingsType type);
 
 void IgnoreApplicationActivationRightNow();
 bool AutostartSupported();
+bool TrayIconSupported();
 QImage GetImageFromClipboard();
 bool StartSystemMove(QWindow *window);
 bool StartSystemResize(QWindow *window, Qt::Edges edges);

Telegram/SourceFiles/platform/win/specific_win.cpp

@@ -384,27 +384,34 @@ std::optional<crl::time> LastUserInputTime() {
 }
 
 std::optional<bool> IsDarkMode() {
-	if (QOperatingSystemVersion::current()
-        < QOperatingSystemVersion(QOperatingSystemVersion::Windows, 10, 0, 17763)) {
+	static const auto kSystemVersion = QOperatingSystemVersion::current();
+	static const auto kDarkModeAddedVersion = QOperatingSystemVersion(
+		QOperatingSystemVersion::Windows,
+		10,
+		0,
+		17763);
+	static const auto kSupported = (kSystemVersion >= kDarkModeAddedVersion);
+	if (!kSupported) {
 		return std::nullopt;
 	}
 
-	LPCWSTR lpKeyName = L"Software\\Microsoft\\Windows\\CurrentVersion\\Themes\\Personalize";
-	LPCWSTR lpValueName = L"AppsUseLightTheme";
-	HKEY key;
-	auto result = RegOpenKeyEx(HKEY_CURRENT_USER, lpKeyName, 0, KEY_READ, &key);
+	const auto keyName = L""
+		"Software\\Microsoft\\Windows\\CurrentVersion\\Themes\\Personalize";
+	const auto valueName = L"AppsUseLightTheme";
+	auto key = HKEY();
+	auto result = RegOpenKeyEx(HKEY_CURRENT_USER, keyName, 0, KEY_READ, &key);
 	if (result != ERROR_SUCCESS) {
 		return std::nullopt;
 	}
 
 	DWORD value = 0, type = 0, size = sizeof(value);
-	result = RegQueryValueEx(key, lpValueName, 0, &type, (LPBYTE)&value, &size);
+	result = RegQueryValueEx(key, valueName, 0, &type, (LPBYTE)&value, &size);
 	RegCloseKey(key);
 	if (result != ERROR_SUCCESS) {
 		return std::nullopt;
 	}
 
-	return value == 0;
+	return (value == 0);
 }
 
 bool AutostartSupported() {

Telegram/SourceFiles/platform/win/specific_win.h

@@ -40,6 +40,10 @@ inline bool StartSystemResize(QWindow *window, Qt::Edges edges) {
 	return false;
 }
 
+inline bool TrayIconSupported() {
+	return true;
+}
+
 namespace ThirdParty {
 
 void start();

Telegram/SourceFiles/settings.cpp

@@ -42,7 +42,6 @@ bool gUseFreeType = false;
 bool gAutoUpdate = true;
 TWindowPos gWindowPos;
 LaunchMode gLaunchMode = LaunchModeNormal;
-bool gSupportTray = true;
 bool gSeenTrayTooltip = false;
 bool gRestartingUpdate = false, gRestarting = false, gRestartingToSettings = false, gWriteProtected = false;
 int32 gLastUpdateCheck = 0;

Telegram/SourceFiles/settings.h

@@ -79,7 +79,6 @@ struct TWindowPos {
 	int h = 0;
 };
 DeclareSetting(TWindowPos, WindowPos);
-DeclareSetting(bool, SupportTray);
 DeclareSetting(bool, SeenTrayTooltip);
 DeclareSetting(bool, RestartingUpdate);
 DeclareSetting(bool, Restarting);

Telegram/SourceFiles/settings/settings_advanced.cpp

@@ -325,11 +325,7 @@ void SetupSpellchecker(
 #endif // !TDESKTOP_DISABLE_SPELLCHECK
 }
 
-bool HasTray() {
-	return cSupportTray() || Platform::IsWindows();
-}
-
-void SetupTrayContent(not_null<Ui::VerticalLayout*> container) {
+void SetupSystemIntegrationContent(not_null<Ui::VerticalLayout*> container) {
 	const auto checkbox = [&](const QString &label, bool checked) {
 		return object_ptr<Ui::Checkbox>(
 			container,
@@ -349,65 +345,65 @@ void SetupTrayContent(not_null<Ui::VerticalLayout*> container) {
 				checkbox(label, checked),
 				st::settingsCheckboxPadding));
 	};
+	if (Platform::TrayIconSupported()) {
+		const auto trayEnabled = [] {
+			const auto workMode = Global::WorkMode().value();
+			return (workMode == dbiwmTrayOnly)
+				|| (workMode == dbiwmWindowAndTray);
+		};
+		const auto tray = addCheckbox(
+			tr::lng_settings_workmode_tray(tr::now),
+			trayEnabled());
 
-	const auto trayEnabled = [] {
-		const auto workMode = Global::WorkMode().value();
-		return (workMode == dbiwmTrayOnly)
-			|| (workMode == dbiwmWindowAndTray);
-	};
-	const auto tray = addCheckbox(
-		tr::lng_settings_workmode_tray(tr::now),
-		trayEnabled());
+		const auto taskbarEnabled = [] {
+			const auto workMode = Global::WorkMode().value();
+			return (workMode == dbiwmWindowOnly)
+				|| (workMode == dbiwmWindowAndTray);
+		};
+		const auto taskbar = Platform::IsWindows()
+			? addCheckbox(
+				tr::lng_settings_workmode_window(tr::now),
+				taskbarEnabled())
+			: nullptr;
 
-	const auto taskbarEnabled = [] {
-		const auto workMode = Global::WorkMode().value();
-		return (workMode == dbiwmWindowOnly)
-			|| (workMode == dbiwmWindowAndTray);
-	};
-	const auto taskbar = Platform::IsWindows()
-		? addCheckbox(
-			tr::lng_settings_workmode_window(tr::now),
-			taskbarEnabled())
-		: nullptr;
+		const auto updateWorkmode = [=] {
+			const auto newMode = tray->checked()
+				? ((!taskbar || taskbar->checked())
+					? dbiwmWindowAndTray
+					: dbiwmTrayOnly)
+				: dbiwmWindowOnly;
+			if ((newMode == dbiwmWindowAndTray || newMode == dbiwmTrayOnly)
+				&& Global::WorkMode().value() != newMode) {
+				cSetSeenTrayTooltip(false);
+			}
+			Global::RefWorkMode().set(newMode);
+			Local::writeSettings();
+		};
 
-	const auto updateWorkmode = [=] {
-		const auto newMode = tray->checked()
-			? ((!taskbar || taskbar->checked())
-				? dbiwmWindowAndTray
-				: dbiwmTrayOnly)
-			: dbiwmWindowOnly;
-		if ((newMode == dbiwmWindowAndTray || newMode == dbiwmTrayOnly)
-			&& Global::WorkMode().value() != newMode) {
-			cSetSeenTrayTooltip(false);
-		}
-		Global::RefWorkMode().set(newMode);
-		Local::writeSettings();
-	};
-
-	tray->checkedChanges(
-	) | rpl::filter([=](bool checked) {
-		return (checked != trayEnabled());
-	}) | rpl::start_with_next([=](bool checked) {
-		if (!checked && taskbar && !taskbar->checked()) {
-			taskbar->setChecked(true);
-		} else {
-			updateWorkmode();
-		}
-	}, tray->lifetime());
-
-	if (taskbar) {
-		taskbar->checkedChanges(
+		tray->checkedChanges(
 		) | rpl::filter([=](bool checked) {
-			return (checked != taskbarEnabled());
+			return (checked != trayEnabled());
 		}) | rpl::start_with_next([=](bool checked) {
-			if (!checked && !tray->checked()) {
-				tray->setChecked(true);
+			if (!checked && taskbar && !taskbar->checked()) {
+				taskbar->setChecked(true);
 			} else {
 				updateWorkmode();
 			}
-		}, taskbar->lifetime());
-	}
+		}, tray->lifetime());
 
+		if (taskbar) {
+			taskbar->checkedChanges(
+			) | rpl::filter([=](bool checked) {
+				return (checked != taskbarEnabled());
+			}) | rpl::start_with_next([=](bool checked) {
+				if (!checked && !tray->checked()) {
+					tray->setChecked(true);
+				} else {
+					updateWorkmode();
+				}
+			}, taskbar->lifetime());
+		}
+	}
 	if (Platform::AllowNativeWindowFrameToggle()) {
 		const auto nativeFrame = addCheckbox(
 			tr::lng_settings_native_frame(tr::now),
@@ -421,7 +417,6 @@ void SetupTrayContent(not_null<Ui::VerticalLayout*> container) {
 			Core::App().saveSettingsDelayed();
 		}, nativeFrame->lifetime());
 	}
-
 	if (Platform::AutostartSupported()) {
 		const auto minimizedToggled = [] {
 			return cStartMinimized() && !Global::LocalPasscode();
@@ -471,8 +466,7 @@ void SetupTrayContent(not_null<Ui::VerticalLayout*> container) {
 		}, minimized->lifetime());
 	}
 
-#ifndef OS_WIN_STORE
-	if (Platform::IsWindows()) {
+	if (Platform::IsWindows() && !Platform::IsWindowsStoreBuild()) {
 		const auto sendto = addCheckbox(
 			tr::lng_settings_add_sendto(tr::now),
 			cSendToMenu());
@@ -486,22 +480,18 @@ void SetupTrayContent(not_null<Ui::VerticalLayout*> container) {
 			Local::writeSettings();
 		}, sendto->lifetime());
 	}
-#endif // OS_WIN_STORE
 }
 
-void SetupTray(not_null<Ui::VerticalLayout*> container) {
-	if (!HasTray()) {
-		return;
-	}
-
+void SetupSystemIntegrationOptions(not_null<Ui::VerticalLayout*> container) {
 	auto wrap = object_ptr<Ui::VerticalLayout>(container);
-	SetupTrayContent(wrap.data());
+	SetupSystemIntegrationContent(wrap.data());
+	if (wrap->count() > 0) {
+		container->add(object_ptr<Ui::OverrideMargins>(
+			container,
+			std::move(wrap)));
 
-	container->add(object_ptr<Ui::OverrideMargins>(
-		container,
-		std::move(wrap)));
-
-	AddSkip(container, st::settingsCheckboxesSkip);
+		AddSkip(container, st::settingsCheckboxesSkip);
+	}
 }
 
 void SetupAnimations(not_null<Ui::VerticalLayout*> container) {
@@ -539,7 +529,7 @@ void SetupSystemIntegration(
 	)->addClickHandler([=] {
 		showOther(Type::Calls);
 	});
-	SetupTray(container);
+	SetupSystemIntegrationOptions(container);
 	AddSkip(container);
 }
 

Telegram/SourceFiles/settings/settings_advanced.h

@@ -21,8 +21,7 @@ void SetupConnectionType(
 	not_null<Ui::VerticalLayout*> container);
 bool HasUpdate();
 void SetupUpdate(not_null<Ui::VerticalLayout*> container);
-bool HasTray();
-void SetupTray(not_null<Ui::VerticalLayout*> container);
+void SetupSystemIntegrationContent(not_null<Ui::VerticalLayout*> container);
 void SetupAnimations(not_null<Ui::VerticalLayout*> container);
 
 class Advanced : public Section {

Telegram/SourceFiles/settings/settings_chat.cpp

@@ -982,7 +982,9 @@ void SetupChatBackground(
 	}, adaptive->lifetime());
 }
 
-void SetupDefaultThemes(not_null<Ui::VerticalLayout*> container) {
+void SetupDefaultThemes(
+		not_null<Window::Controller*> window,
+		not_null<Ui::VerticalLayout*> container) {
 	using Type = Window::Theme::EmbeddedType;
 	using Scheme = Window::Theme::EmbeddedScheme;
 	using Check = Window::Theme::CloudListCheck;
@@ -1015,13 +1017,18 @@ void SetupDefaultThemes(not_null<Ui::VerticalLayout*> container) {
 		};
 		const auto currentlyIsCustom = (chosen() == Type(-1))
 			&& !Background()->themeObject().cloud.id;
+		const auto keep = [=] {
+			if (!currentlyIsCustom) {
+				KeepApplied();
+			}
+		};
 		if (IsNightMode() == isNight(scheme)) {
 			ApplyDefaultWithPath(scheme.path);
+			keep();
 		} else {
-			ToggleNightMode(scheme.path);
-		}
-		if (!currentlyIsCustom) {
-			KeepApplied();
+			Window::Theme::ToggleNightModeWithConfirmation(
+				window,
+				[=, path = scheme.path] { ToggleNightMode(path); keep();});
 		}
 	};
 	const auto schemeClicked = [=](
@@ -1163,7 +1170,7 @@ void SetupThemeOptions(
 	AddSubsectionTitle(container, tr::lng_settings_themes());
 
 	AddSkip(container, st::settingsThemesTopSkip);
-	SetupDefaultThemes(container);
+	SetupDefaultThemes(&controller->window(), container);
 	AddSkip(container);
 }
 
@@ -1260,6 +1267,47 @@ void SetupCloudThemes(
 	wrap->setDuration(0)->toggleOn(list->empty() | rpl::map(!_1));
 }
 
+void SetupAutoNightMode(not_null<Ui::VerticalLayout*> container) {
+	if (!Platform::IsDarkModeSupported()) {
+		return;
+	}
+
+	AddDivider(container);
+	AddSkip(container, st::settingsPrivacySkip);
+
+	AddSubsectionTitle(container, tr::lng_settings_auto_night_mode());
+
+	auto wrap = object_ptr<Ui::VerticalLayout>(container);
+	const auto autoNight = wrap->add(
+		object_ptr<Ui::Checkbox>(
+			wrap,
+			tr::lng_settings_auto_night_enabled(tr::now),
+			Core::App().settings().systemDarkModeEnabled(),
+			st::settingsCheckbox),
+		st::settingsCheckboxPadding);
+
+	autoNight->checkedChanges(
+	) | rpl::filter([=](bool checked) {
+		return (checked != Core::App().settings().systemDarkModeEnabled());
+	}) | rpl::start_with_next([=](bool checked) {
+		Core::App().settings().setSystemDarkModeEnabled(checked);
+		Core::App().saveSettingsDelayed();
+	}, autoNight->lifetime());
+
+	Core::App().settings().systemDarkModeEnabledChanges(
+	) | rpl::filter([=](bool value) {
+		return (value != autoNight->checked());
+	}) | rpl::start_with_next([=](bool value) {
+		autoNight->setChecked(value);
+	}, autoNight->lifetime());
+
+	container->add(object_ptr<Ui::OverrideMargins>(
+		container,
+		std::move(wrap)));
+
+	AddSkip(container, st::settingsCheckboxesSkip);
+}
+
 void SetupSupportSwitchSettings(
 		not_null<Window::SessionController*> controller,
 		not_null<Ui::VerticalLayout*> container) {
@@ -1381,6 +1429,7 @@ void Chat::setupContent(not_null<Window::SessionController*> controller) {
 	const auto content = Ui::CreateChild<Ui::VerticalLayout>(this);
 
 	SetupThemeOptions(controller, content);
+	SetupAutoNightMode(content);
 	SetupCloudThemes(controller, content);
 	SetupChatBackground(controller, content);
 	SetupStickersEmoji(controller, content);

Telegram/SourceFiles/settings/settings_chat.h

@@ -9,6 +9,10 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 
 #include "settings/settings_common.h"
 
+namespace Window {
+class Controller;
+} // namespace Window
+
 namespace Settings {
 
 void SetupDataStorage(
@@ -17,7 +21,9 @@ void SetupDataStorage(
 void SetupAutoDownload(
 	not_null<Window::SessionController*> controller,
 	not_null<Ui::VerticalLayout*> container);
-void SetupDefaultThemes(not_null<Ui::VerticalLayout*> container);
+void SetupDefaultThemes(
+	not_null<Window::Controller*> window,
+	not_null<Ui::VerticalLayout*> container);
 void SetupSupport(
 	not_null<Window::SessionController*> controller,
 	not_null<Ui::VerticalLayout*> container);

Telegram/SourceFiles/settings/settings_intro.cpp

@@ -75,16 +75,14 @@ object_ptr<Ui::RpWidget> CreateIntroSettings(
 		SetupUpdate(result);
 		AddSkip(result);
 	}
-	if (HasTray()) {
-		AddDivider(result);
-		AddSkip(result);
-		SetupTray(result);
-		AddSkip(result);
-	}
+	AddDivider(result);
+	AddSkip(result);
+	SetupSystemIntegrationContent(result);
+	AddSkip(result);
 	AddDivider(result);
 	AddSkip(result);
 	SetupInterfaceScale(result, false);
-	SetupDefaultThemes(result);
+	SetupDefaultThemes(window, result);
 	AddSkip(result);
 
 	if (anim::Disabled()) {

Telegram/SourceFiles/storage/file_download.cpp

@@ -140,8 +140,9 @@ void FileLoader::finishWithBytes(const QByteArray &data) {
 		Platform::File::PostprocessDownloaded(
 			QFileInfo(_file).absoluteFilePath());
 	}
-	_session->notifyDownloaderTaskFinished();
+	const auto session = _session;
 	_updates.fire_done();
+	session->notifyDownloaderTaskFinished();
 }
 
 QByteArray FileLoader::imageFormat(const QSize &shrinkBox) const {

Telegram/SourceFiles/storage/storage_account.cpp

@@ -134,7 +134,7 @@ StartResult Account::legacyStart(const QByteArray &passcode) {
 	if (result == ReadMapResult::Failed) {
 		Assert(_localKey == nullptr);
 	} else if (result == ReadMapResult::IncorrectPasscode) {
-		return StartResult::IncorrectPasscode;
+		return StartResult::IncorrectPasscodeLegacy;
 	}
 	clearLegacyFiles();
 	return StartResult::Success;

Telegram/SourceFiles/storage/storage_domain.h

@@ -23,6 +23,7 @@ namespace Storage {
 enum class StartResult : uchar {
 	Success,
 	IncorrectPasscode,
+	IncorrectPasscodeLegacy,
 };
 
 class Domain final {

Telegram/SourceFiles/window/themes/window_theme.cpp

@@ -10,6 +10,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "window/themes/window_theme_preview.h"
 #include "window/themes/window_themes_embedded.h"
 #include "window/themes/window_theme_editor.h"
+#include "window/window_controller.h"
 #include "mainwidget.h"
 #include "main/main_session.h"
 #include "apiwrap.h"
@@ -24,6 +25,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "main/main_account.h" // Account::local.
 #include "main/main_domain.h" // Domain::activeSessionValue.
 #include "ui/image/image.h"
+#include "boxes/confirm_box.h"
 #include "boxes/background_box.h"
 #include "core/application.h"
 #include "app.h"
@@ -560,6 +562,8 @@ void ChatBackground::start() {
 		_session = session;
 		checkUploadWallPaper();
 	}, _lifetime);
+
+	Core::App().settings().setSystemDarkMode(Platform::IsDarkMode());
 }
 
 void ChatBackground::checkUploadWallPaper() {
@@ -1074,6 +1078,14 @@ bool ChatBackground::nightMode() const {
 void ChatBackground::reapplyWithNightMode(
 		std::optional<QString> themePath,
 		bool newNightMode) {
+	if (!started()) {
+		// We can get here from legacy passcoded state.
+		// In this case Background() is not started yet, because
+		// some settings and the background itself were not read.
+		return;
+	} else if (_nightMode != newNightMode && !nightModeChangeAllowed()) {
+		return;
+	}
 	const auto settingExactTheme = themePath.has_value();
 	const auto nightModeChanged = (newNightMode != _nightMode);
 	const auto oldNightMode = _nightMode;
@@ -1136,6 +1148,14 @@ void ChatBackground::reapplyWithNightMode(
 	}
 }
 
+bool ChatBackground::nightModeChangeAllowed() const {
+	const auto &settings = Core::App().settings();
+	const auto allowedToBeAfterChange = settings.systemDarkModeEnabled()
+		? settings.systemDarkMode().value_or(!_nightMode)
+		: !_nightMode;
+	return (_nightMode != allowedToBeAfterChange);
+}
+
 void ChatBackground::toggleNightMode(std::optional<QString> themePath) {
 	reapplyWithNightMode(themePath, !_nightMode);
 }
@@ -1293,6 +1313,28 @@ void ToggleNightMode(const QString &path) {
 	Background()->toggleNightMode(path);
 }
 
+void ToggleNightModeWithConfirmation(
+		not_null<Controller*> window,
+		Fn<void()> toggle) {
+	if (Background()->nightModeChangeAllowed()) {
+		toggle();
+	} else {
+		const auto box = std::make_shared<QPointer<ConfirmBox>>();
+		const auto disableAndToggle = [=] {
+			Core::App().settings().setSystemDarkModeEnabled(false);
+			Core::App().saveSettingsDelayed();
+			toggle();
+			if (*box) {
+				(*box)->closeBox();
+			}
+		};
+		*box = window->show(Box<ConfirmBox>(
+			tr::lng_settings_auto_night_warning(tr::now),
+			tr::lng_settings_auto_night_disable(tr::now),
+			disableAndToggle));
+	}
+}
+
 void ResetToSomeDefault() {
 	Background()->reapplyWithNightMode(
 		IsNightMode() ? NightThemePath() : QString(),

Telegram/SourceFiles/window/themes/window_theme.h

@@ -14,6 +14,10 @@ namespace Main {
 class Session;
 } // namespace Main
 
+namespace Window {
+class Controller;
+} // namespace Window
+
 namespace Window {
 namespace Theme {
 
@@ -76,6 +80,9 @@ QString NightThemePath();
 void SetNightModeValue(bool nightMode);
 void ToggleNightMode();
 void ToggleNightMode(const QString &themePath);
+void ToggleNightModeWithConfirmation(
+	not_null<Controller*> window,
+	Fn<void()> toggle);
 void ResetToSomeDefault();
 [[nodiscard]] bool IsNonDefaultBackground();
 void Revert();
@@ -169,6 +176,7 @@ public:
 	[[nodiscard]] bool tileDay() const;
 	[[nodiscard]] bool tileNight() const;
 	[[nodiscard]] bool isMonoColorImage() const;
+	[[nodiscard]] bool nightModeChangeAllowed() const;
 
 private:
 	struct AdjustableColor {

Telegram/SourceFiles/window/window_controller.cpp

@@ -51,8 +51,6 @@ Controller::~Controller() {
 }
 
 void Controller::showAccount(not_null<Main::Account*> account) {
-	Window::Theme::Background()->start();
-
 	_accountLifetime.destroy();
 	_account = account;
 

Telegram/SourceFiles/window/window_main_menu.cpp

@@ -894,10 +894,19 @@ void MainMenu::refreshMenu() {
 
 	_nightThemeAction = std::make_shared<QPointer<QAction>>();
 	auto action = _menu->addAction(tr::lng_menu_night_mode(tr::now), [=] {
-		if (auto action = *_nightThemeAction) {
-			action->setChecked(!action->isChecked());
-			_nightThemeSwitch.callOnce(st::mainMenu.itemToggle.duration);
-		}
+		const auto weak = MakeWeak(this);
+		const auto toggle = [=] {
+			if (!weak) {
+				Window::Theme::ToggleNightMode();
+				Window::Theme::KeepApplied();
+			} else if (auto action = *_nightThemeAction) {
+				action->setChecked(!action->isChecked());
+				_nightThemeSwitch.callOnce(st::mainMenu.itemToggle.duration);
+			}
+		};
+		Window::Theme::ToggleNightModeWithConfirmation(
+			&_controller->window(),
+			toggle);
 	}, &st::mainMenuNightMode, &st::mainMenuNightModeOver);
 	*_nightThemeAction = action;
 	action->setCheckable(true);
@@ -908,12 +917,6 @@ void MainMenu::refreshMenu() {
 		if (darkModeEnabled && darkMode.has_value()) {
 			action->setChecked(*darkMode);
 		}
-		action->setEnabled(!darkModeEnabled || !darkMode.has_value());
-	}, lifetime());
-	Core::App().settings().systemDarkModeEnabledChanges(
-	) | rpl::start_with_next([=](bool darkModeEnabled) {
-		const auto darkMode = Core::App().settings().systemDarkMode();
-		action->setEnabled(!darkModeEnabled || !darkMode.has_value());
 	}, lifetime());
 	_menu->finishAnimating();