Added translation preferences.

Telegram/Resources/langs/lang.strings

@@ -3390,6 +3390,11 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 "lng_translate_box_original" = "Original";
 "lng_translate_box_error" = "Translate failed.";
 
+"lng_translate_settings_subtitle" = "Translate Messages";
+"lng_translate_settings_show" = "Show Translate Button";
+"lng_translate_settings_choose" = "Do Not Translate";
+"lng_translate_settings_about" = "The 'Translate' button will appear when you open a context menu on a text message.";
+
 "lng_launch_exe_warning" = "This file has a {extension} extension.\nAre you sure you want to run it?";
 "lng_launch_svg_warning" = "Opening this file can potentially expose your IP address to its sender. Continue?";
 "lng_launch_exe_sure" = "Run";

Telegram/SourceFiles/boxes/language_box.cpp

@@ -23,18 +23,21 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "ui/text/text_options.h"
 #include "ui/painter.h"
 #include "storage/localstorage.h"
+#include "boxes/translate_box.h"
 #include "ui/boxes/confirm_box.h"
 #include "mainwidget.h"
 #include "mainwindow.h"
 #include "core/application.h"
 #include "lang/lang_instance.h"
 #include "lang/lang_cloud_manager.h"
+#include "settings/settings_common.h"
 #include "styles/style_layers.h"
 #include "styles/style_boxes.h"
 #include "styles/style_info.h"
 #include "styles/style_passport.h"
 #include "styles/style_chat_helpers.h"
 #include "styles/style_menu_icons.h"
+#include "styles/style_settings.h"
 
 #include <QtGui/QGuiApplication>
 #include <QtGui/QClipboard>
@@ -1096,6 +1099,44 @@ void LanguageBox::prepare() {
 	setTitle(tr::lng_languages());
 
 	const auto topContainer = Ui::CreateChild<Ui::VerticalLayout>(this);
+	Settings::AddSubsectionTitle(
+		topContainer,
+		tr::lng_translate_settings_subtitle());
+
+	const auto translateEnabled = Settings::AddButton(
+		topContainer,
+		tr::lng_translate_settings_show(),
+		st::settingsButtonNoIcon
+	)->toggleOn(rpl::single(Core::App().settings().translateButtonEnabled()));
+
+	translateEnabled->toggledValue(
+	) | rpl::filter([](bool checked) {
+		return (checked != Core::App().settings().translateButtonEnabled());
+	}) | rpl::start_with_next([=](bool checked) {
+		Core::App().settings().setTranslateButtonEnabled(checked);
+		Core::App().saveSettingsDelayed();
+	}, translateEnabled->lifetime());
+
+	const auto label = lifetime().make_state<rpl::event_stream<QLocale>>();
+	const auto translateSkip = Settings::AddButtonWithLabel(
+		topContainer,
+		tr::lng_translate_settings_choose(),
+		label->events() | rpl::map(Ui::LanguageName),
+		st::settingsButtonNoIcon);
+	label->fire(QLocale(Core::App().settings().skipTranslationForLanguage()));
+	translateSkip->setClickedCallback([=] {
+		Ui::BoxShow(this).showBox(
+			Box(Ui::ChooseLanguageBox, [=](QLocale locale) {
+				label->fire(QLocale(locale));
+				Core::App().settings().setSkipTranslationForLanguage(
+					locale.language());
+			}),
+			Ui::LayerOption::KeepOther);
+	});
+	Settings::AddSkip(topContainer);
+	Settings::AddDividerText(
+		topContainer,
+		tr::lng_translate_settings_about());
 
 	const auto select = topContainer->add(
 		object_ptr<Ui::MultiSelect>(

Telegram/SourceFiles/boxes/translate_box.cpp

@@ -7,12 +7,15 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 */
 #include "boxes/translate_box.h"
 
+#include "core/application.h"
+#include "core/core_settings.h"
 #include "data/data_peer.h"
 #include "lang/lang_instance.h"
 #include "lang/lang_keys.h"
 #include "main/main_session.h"
 #include "mtproto/sender.h"
 #include "settings/settings_common.h"
+#include "spellcheck/platform/platform_language.h"
 #include "ui/effects/loading_element.h"
 #include "ui/layers/generic_box.h"
 #include "ui/widgets/buttons.h"
@@ -73,13 +76,6 @@ namespace {
 	};
 }
 
-[[nodiscard]] QString LanguageName(const QLocale &locale) {
-	return (locale.language() == QLocale::English
-			&& locale.country() == QLocale::UnitedStates)
-		? u"English"_q
-		: locale.nativeLanguageName();
-}
-
 class ShowButton : public RpWidget {
 public:
 	ShowButton(not_null<Ui::RpWidget*> parent);
@@ -129,6 +125,17 @@ rpl::producer<Qt::MouseButton> ShowButton::clicks() const {
 
 } // namespace
 
+QString LanguageName(const QLocale &locale) {
+	if (locale.language() == QLocale::English
+			&& (locale.country() == QLocale::UnitedStates
+				|| locale.country() == QLocale::AnyCountry)) {
+		return u"English"_q;
+	} else {
+		const auto name = locale.nativeLanguageName();
+		return name.left(1).toUpper() + name.mid(1);
+	}
+}
+
 void TranslateBox(
 		not_null<Ui::GenericBox*> box,
 		not_null<PeerData*> peer,
@@ -137,7 +144,8 @@ void TranslateBox(
 	box->setWidth(st::boxWideWidth);
 	box->addButton(tr::lng_box_ok(), [=] { box->closeBox(); });
 	const auto container = box->verticalLayout();
-	const auto defaultId = Lang::LanguageIdOrDefault(Lang::Id());
+	const auto defaultId = QLocale(
+		Core::App().settings().skipTranslationForLanguage()).name().mid(0, 2);
 
 	const auto api = box->lifetime().make_state<MTP::Sender>(
 		&peer->session().mtp());
@@ -264,26 +272,32 @@ void TranslateBox(
 		if (loading->toggled()) {
 			return;
 		}
-		Ui::BoxShow(box).showBox(Box([=](not_null<GenericBox*> b) {
-			b->setTitle(tr::lng_languages());
-			for (const auto &lang : Languages()) {
-				const auto locale = QLocale(lang);
-				const auto button = Settings::AddButton(
-					b->verticalLayout(),
-					rpl::single(LanguageName(locale)),
-					st::defaultSettingsButton);
-				button->setClickedCallback([=] {
-					state->locale.fire_copy(locale);
-					loading->show(anim::type::instant);
-					translated->hide(anim::type::instant);
-					send(locale.name().mid(0, 2));
-					b->closeBox();
-				});
-			}
-			b->addButton(tr::lng_cancel(), [=] { b->closeBox(); });
+		Ui::BoxShow(box).showBox(Box(ChooseLanguageBox, [=](QLocale locale) {
+			state->locale.fire_copy(locale);
+			loading->show(anim::type::instant);
+			translated->hide(anim::type::instant);
+			send(locale.name().mid(0, 2));
 		}));
 	});
 
 }
 
+void ChooseLanguageBox(
+		not_null<Ui::GenericBox*> box,
+		Fn<void(QLocale)> callback) {
+	box->setTitle(tr::lng_languages());
+	for (const auto &lang : Languages()) {
+		const auto locale = QLocale(lang);
+		const auto button = Settings::AddButton(
+			box->verticalLayout(),
+			rpl::single(LanguageName(locale)),
+			st::defaultSettingsButton);
+		button->setClickedCallback([=] {
+			callback(locale);
+			box->closeBox();
+		});
+	}
+	box->addButton(tr::lng_cancel(), [=] { box->closeBox(); });
+}
+
 } // namespace Ui

Telegram/SourceFiles/boxes/translate_box.h

@@ -13,10 +13,16 @@ namespace Ui {
 
 class GenericBox;
 
+[[nodiscard]] QString LanguageName(const QLocale &locale);
+
 void TranslateBox(
 	not_null<Ui::GenericBox*> box,
 	not_null<PeerData*> peer,
 	MsgId msgId,
 	TextWithEntities text);
 
+void ChooseLanguageBox(
+	not_null<Ui::GenericBox*> box,
+	Fn<void(QLocale)> callback);
+
 } // namespace Ui

Telegram/SourceFiles/core/core_settings.cpp

@@ -267,7 +267,8 @@ QByteArray Settings::serialize() const {
 			<< qint32(_chatQuickAction)
 			<< qint32(_hardwareAcceleratedVideo ? 1 : 0)
 			<< qint32(_suggestAnimatedEmoji ? 1 : 0)
-			<< qint32(_cornerReaction.current() ? 1 : 0);
+			<< qint32(_cornerReaction.current() ? 1 : 0)
+			<< qint32(_skipTranslationForLanguage);
 	}
 	return result;
 }
@@ -361,6 +362,7 @@ void Settings::addFromSerialized(const QByteArray &serialized) {
 	qint32 chatQuickAction = static_cast<qint32>(_chatQuickAction);
 	qint32 suggestAnimatedEmoji = _suggestAnimatedEmoji ? 1 : 0;
 	qint32 cornerReaction = _cornerReaction.current() ? 1 : 0;
+	qint32 skipTranslationForLanguage = _skipTranslationForLanguage;
 
 	stream >> themesAccentColors;
 	if (!stream.atEnd()) {
@@ -558,6 +560,9 @@ void Settings::addFromSerialized(const QByteArray &serialized) {
 	if (!stream.atEnd()) {
 		stream >> cornerReaction;
 	}
+	if (!stream.atEnd()) {
+		stream >> skipTranslationForLanguage;
+	}
 	if (stream.status() != QDataStream::Ok) {
 		LOG(("App Error: "
 			"Bad data for Core::Settings::constructFromSerialized()"));
@@ -727,6 +732,7 @@ void Settings::addFromSerialized(const QByteArray &serialized) {
 	}
 	_suggestAnimatedEmoji = (suggestAnimatedEmoji == 1);
 	_cornerReaction = (cornerReaction == 1);
+	_skipTranslationForLanguage = skipTranslationForLanguage;
 }
 
 QString Settings::getSoundPath(const QString &key) const {
@@ -1036,4 +1042,19 @@ float64 Settings::DefaultDialogsWidthRatio() {
 		: kDefaultDialogsWidthRatio;
 }
 
+void Settings::setTranslateButtonEnabled(bool value) {
+	_skipTranslationForLanguage = std::abs(_skipTranslationForLanguage)
+		* (value ? 1 : -1);
+}
+bool Settings::translateButtonEnabled() const {
+	return _skipTranslationForLanguage > 0;
+}
+void Settings::setSkipTranslationForLanguage(QLocale::Language language) {
+	const auto enabled = translateButtonEnabled();
+	_skipTranslationForLanguage = language * (enabled ? 1 : -1);
+}
+QLocale::Language Settings::skipTranslationForLanguage() const {
+	return QLocale::Language(std::abs(_skipTranslationForLanguage));
+}
+
 } // namespace Core

Telegram/SourceFiles/core/core_settings.h

@@ -722,6 +722,11 @@ public:
 		return _chatQuickAction;
 	}
 
+	void setTranslateButtonEnabled(bool value);
+	[[nodiscard]] bool translateButtonEnabled() const;
+	void setSkipTranslationForLanguage(QLocale::Language language);
+	[[nodiscard]] QLocale::Language skipTranslationForLanguage() const;
+
 	[[nodiscard]] static bool ThirdColumnByDefault();
 	[[nodiscard]] static float64 DefaultDialogsWidthRatio();
 	[[nodiscard]] static qint32 SerializePlaybackSpeed(float64 speed) {
@@ -836,6 +841,7 @@ private:
 #endif // Q_OS_MAC
 	HistoryView::DoubleClickQuickAction _chatQuickAction =
 		HistoryView::DoubleClickQuickAction();
+	int _skipTranslationForLanguage = -int(QLocale::English);
 
 	bool _tabbedReplacedWithInfo = false; // per-window
 	rpl::event_stream<bool> _tabbedReplacedWithInfoValue; // per-window