Added ability to use platform provider of translations on macOS.

Telegram/Resources/langs/lang.strings

@@ -6777,6 +6777,8 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 
 "lng_translate_settings_subtitle" = "Translate Messages";
 "lng_translate_settings_show" = "Show Translate Button";
+"lng_translate_settings_use_platform_mac" = "Use Apple Translations";
+"lng_translate_settings_use_platform_mac_about" = "Translation on macOS won't work until you download local language packs in System Settings.";
 "lng_translate_settings_chat" = "Translate Entire Chats";
 "lng_translate_settings_choose" = "Do Not Translate";
 "lng_translate_settings_about" = "The 'Translate' button will appear in the context menu of messages containing text.";

Telegram/SourceFiles/boxes/language_box.cpp

@@ -35,8 +35,10 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "mainwidget.h"
 #include "mainwindow.h"
 #include "core/application.h"
+#include "base/platform/base_platform_info.h"
 #include "lang/lang_instance.h"
 #include "lang/lang_cloud_manager.h"
+#include "platform/platform_translate_provider.h"
 #include "settings/settings_common.h"
 #include "spellcheck/spellcheck_types.h"
 #include "window/window_controller.h"
@@ -1217,6 +1219,36 @@ void LanguageBox::setupTop(not_null<Ui::VerticalLayout*> container) {
 		Core::App().saveSettingsDelayed();
 	}, translateEnabled->lifetime());
 
+	if (Platform::IsMac() && Platform::IsTranslateProviderAvailable()) {
+		const auto platformTranslateWrap = container->add(
+			object_ptr<Ui::SlideWrap<Ui::VerticalLayout>>(
+				container,
+				object_ptr<Ui::VerticalLayout>(container)));
+		platformTranslateWrap->toggle(
+			translateEnabled->toggled(),
+			anim::type::instant);
+		platformTranslateWrap->toggleOn(translateEnabled->toggledValue());
+		const auto platformTranslateEnabled = platformTranslateWrap->entity()->add(
+			object_ptr<Ui::SettingsButton>(
+				platformTranslateWrap->entity(),
+				tr::lng_translate_settings_use_platform_mac(),
+				st::settingsButtonNoIcon))->toggleOn(
+					rpl::single(
+						Core::App().settings().usePlatformTranslation()));
+		platformTranslateEnabled->toggledValue(
+		) | rpl::filter([](bool checked) {
+			return (checked
+				!= Core::App().settings().usePlatformTranslation());
+		}) | rpl::on_next([=](bool checked) {
+			Core::App().settings().setUsePlatformTranslation(checked);
+			Core::App().saveSettingsDelayed();
+		}, platformTranslateEnabled->lifetime());
+		Ui::AddSkip(platformTranslateWrap->entity());
+		Ui::AddDividerText(
+			platformTranslateWrap->entity(),
+			tr::lng_translate_settings_use_platform_mac_about());
+	}
+
 	using namespace rpl::mappers;
 	auto premium = Data::AmPremiumValue(&_controller->session());
 	const auto translateChat = container->add(object_ptr<Ui::SettingsButton>(

Telegram/SourceFiles/core/core_settings.cpp

@@ -246,7 +246,7 @@ QByteArray Settings::serialize() const {
 		+ sizeof(ushort)
 		+ sizeof(qint32) // _notificationsDisplayChecksum
 		+ Serialize::bytearraySize(callPanelPosition)
-		+ sizeof(qint32) * 2; // _cornerReply + _systemAccentColorEnabled
+		+ sizeof(qint32) * 3; // _cornerReply + _systemAccentColorEnabled + _usePlatformTranslation
 
 	auto result = QByteArray();
 	result.reserve(size);
@@ -413,7 +413,8 @@ QByteArray Settings::serialize() const {
 			<< _notificationsDisplayChecksum
 			<< callPanelPosition
 			<< qint32(_cornerReply.current() ? 1 : 0)
-			<< qint32(_systemAccentColorEnabled ? 1 : 0);
+			<< qint32(_systemAccentColorEnabled ? 1 : 0)
+			<< qint32(_usePlatformTranslation ? 1 : 0);
 	}
 
 	Ensures(result.size() == size);
@@ -550,6 +551,7 @@ void Settings::addFromSerialized(const QByteArray &serialized) {
 	qint32 systemAccentColorEnabled = _systemAccentColorEnabled
 		? 1
 		: 0;
+	qint32 usePlatformTranslation = _usePlatformTranslation ? 1 : 0;
 
 	stream >> themesAccentColors;
 	if (!stream.atEnd()) {
@@ -896,6 +898,9 @@ void Settings::addFromSerialized(const QByteArray &serialized) {
 	if (!stream.atEnd()) {
 		stream >> systemAccentColorEnabled;
 	}
+	if (!stream.atEnd()) {
+		stream >> usePlatformTranslation;
+	}
 	if (stream.status() != QDataStream::Ok) {
 		LOG(("App Error: "
 			"Bad data for Core::Settings::constructFromSerialized()"));
@@ -937,6 +942,7 @@ void Settings::addFromSerialized(const QByteArray &serialized) {
 	}
 	_notificationsDisplayChecksum = notificationsDisplayChecksum;
 	_systemAccentColorEnabled = (systemAccentColorEnabled == 1);
+	_usePlatformTranslation = (usePlatformTranslation == 1);
 	_includeMutedCounter = (includeMutedCounter == 1);
 	_includeMutedCounterFolders = (includeMutedCounterFolders == 1);
 	_countUnreadMessages = (countUnreadMessages == 1);
@@ -1591,6 +1597,14 @@ bool Settings::translateButtonEnabled() const {
 	return _translateButtonEnabled;
 }
 
+void Settings::setUsePlatformTranslation(bool value) {
+	_usePlatformTranslation = value;
+}
+
+bool Settings::usePlatformTranslation() const {
+	return _usePlatformTranslation;
+}
+
 void Settings::setTranslateChatEnabled(bool value) {
 	_translateChatEnabled = value;
 }

Telegram/SourceFiles/core/core_settings.h

@@ -857,6 +857,8 @@ public:
 
 	void setTranslateButtonEnabled(bool value);
 	[[nodiscard]] bool translateButtonEnabled() const;
+	void setUsePlatformTranslation(bool value);
+	[[nodiscard]] bool usePlatformTranslation() const;
 	void setTranslateChatEnabled(bool value);
 	[[nodiscard]] bool translateChatEnabled() const;
 	[[nodiscard]] rpl::producer<bool> translateChatEnabledValue() const;
@@ -1098,6 +1100,7 @@ private:
 	HistoryView::DoubleClickQuickAction _chatQuickAction
 		= HistoryView::DoubleClickQuickAction();
 	bool _translateButtonEnabled = false;
+	bool _usePlatformTranslation = false;
 	rpl::variable<bool> _translateChatEnabled = true;
 	rpl::variable<int> _translateToRaw = 0;
 	rpl::variable<std::vector<LanguageId>> _skipTranslationLanguages;

Telegram/SourceFiles/lang/translate_provider.cpp

@@ -7,6 +7,8 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 */
 #include "lang/translate_provider.h"
 
+#include "core/application.h"
+#include "core/core_settings.h"
 #include "data/data_msg_id.h"
 #include "data/data_peer.h"
 #include "data/data_session.h"
@@ -18,6 +20,10 @@ namespace Ui {
 
 std::unique_ptr<TranslateProvider> CreateTranslateProvider(
 		not_null<Main::Session*> session) {
+	if (Core::App().settings().usePlatformTranslation()
+		&& Platform::IsTranslateProviderAvailable()) {
+		return Platform::CreateTranslateProvider();
+	}
 	return CreateMTProtoTranslateProvider(session);
 }