Added time zone info to date tooltips in export HTML.

Telegram/SourceFiles/export/data/export_data_types.cpp

@@ -14,6 +14,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "core/mime_type.h"
 #include "core/utils.h"
 #include <QtCore/QDateTime>
+#include <QtCore/QTimeZone>
 #include <QtCore/QRegularExpression>
 #include <QtGui/QImageReader>
 #include <range/v3/algorithm/max_element.hpp>
@@ -30,7 +31,7 @@ constexpr auto kMigratedMessagesIdShift = -1'000'000'000;
 
 QString PrepareFileNameDatePart(TimeId date) {
 	return date
-		? ('@' + QString::fromUtf8(FormatDateTime(date, '-', '-', '_')))
+		? ('@' + QString::fromUtf8(FormatDateTime(date, 0, '-', '-', '_')))
 		: QString();
 }
 
@@ -1811,6 +1812,7 @@ Utf8String FormatPhoneNumber(const Utf8String &phoneNumber) {
 
 Utf8String FormatDateTime(
 		TimeId date,
+		bool hasTimeZone,
 		QChar dateSeparator,
 		QChar timeSeparator,
 		QChar separator) {
@@ -1818,14 +1820,21 @@ Utf8String FormatDateTime(
 		return Utf8String();
 	}
 	const auto value = QDateTime::fromSecsSinceEpoch(date);
+	const auto timeZoneOffset = hasTimeZone
+		? separator + value.timeZone().displayName(
+			QTimeZone::StandardTime,
+			QTimeZone::OffsetName)
+		: QString();
 	return (QString("%1") + dateSeparator + "%2" + dateSeparator + "%3"
 		+ separator + "%4" + timeSeparator + "%5" + timeSeparator + "%6"
+		+ "%7"
 	).arg(value.date().day(), 2, 10, QChar('0')
 	).arg(value.date().month(), 2, 10, QChar('0')
 	).arg(value.date().year()
 	).arg(value.time().hour(), 2, 10, QChar('0')
 	).arg(value.time().minute(), 2, 10, QChar('0')
 	).arg(value.time().second(), 2, 10, QChar('0')
+	).arg(timeZoneOffset
 	).toUtf8();
 }
 

Telegram/SourceFiles/export/data/export_data_types.h

@@ -709,6 +709,7 @@ bool SkipMessageByDate(const Message &message, const Settings &settings);
 Utf8String FormatPhoneNumber(const Utf8String &phoneNumber);
 Utf8String FormatDateTime(
 	TimeId date,
+	bool hasTimeZone = false,
 	QChar dateSeparator = QChar('.'),
 	QChar timeSeparator = QChar(':'),
 	QChar separator = QChar(' '));

Telegram/SourceFiles/export/output/export_output_html.cpp

@@ -1193,7 +1193,7 @@ auto HtmlWriter::Wrap::pushMessage(
 	block.append(pushDiv("body"));
 	block.append(pushTag("div", {
 		{ "class", "pull_right date details" },
-		{ "title", FormatDateTime(message.date) },
+		{ "title", FormatDateTime(message.date, true) },
 	}));
 	block.append(FormatTimeText(message.date));
 	block.append(popTag());
@@ -1223,7 +1223,8 @@ auto HtmlWriter::Wrap::pushMessage(
 				block.append(" via @" + via);
 			}
 			block.append(pushTag("span", {
-				{ "class", "details" },
+				{ "class", "date details" },
+				{ "title", FormatDateTime(message.forwardedDate, true) },
 				{ "inline", "" }
 			}));
 			block.append(' ' + FormatDateTime(message.forwardedDate));