Use app config value for QR login.

Telegram/SourceFiles/intro/intro_start.cpp

@@ -0,0 +1,49 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#include "intro/intro_start.h"
+
+#include "lang/lang_keys.h"
+#include "intro/intro_qr.h"
+#include "intro/intro_phone.h"
+#include "ui/widgets/buttons.h"
+#include "ui/widgets/labels.h"
+#include "main/main_account.h"
+#include "main/main_app_config.h"
+
+namespace Intro {
+namespace details {
+
+StartWidget::StartWidget(
+	QWidget *parent,
+	not_null<Main::Account*> account,
+	not_null<Data*> data)
+: Step(parent, account, data, true) {
+	setMouseTracking(true);
+	setTitleText(rpl::single(qsl("Telegram Desktop")));
+	setDescriptionText(tr::lng_intro_about());
+	show();
+}
+
+void StartWidget::submit() {
+	account().destroyStaleAuthorizationKeys();
+	const auto qrLogin = account().appConfig().get<QString>(
+		"qr_login_code",
+		"disabled");
+	if (qrLogin == "primary") {
+		goNext<QrWidget>();
+	} else {
+		goNext<PhoneWidget>();
+	}
+}
+
+rpl::producer<QString> StartWidget::nextButtonText() const {
+	return tr::lng_start_msgs();
+}
+
+} // namespace details
+} // namespace Intro