Added simple tooltip to ttl button from voice record bar.

Telegram/Resources/langs/lang.strings

@@ -2492,6 +2492,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 "lng_record_listen_cancel_sure" = "Are you sure you want to discard your recorded voice message?";
 "lng_record_lock_discard" = "Discard";
 "lng_record_hold_tip" = "Please hold the mouse button pressed to record a voice message.";
+"lng_record_once_active_tooltip" = "The recipients will be able to listen to it only once.";
 "lng_will_be_notified" = "Members will be notified when you post";
 "lng_wont_be_notified" = "Members will not be notified when you post";
 "lng_willbe_history" = "Please select a chat to start messaging";

Telegram/SourceFiles/chat_helpers/chat_helpers.style

@@ -1130,6 +1130,12 @@ historyRecordLockPosition: point(1px, 22px);
 historyRecordCancelButtonWidth: 100px;
 historyRecordCancelButtonFg: lightButtonFg;
 
+historyRecordTooltip: ImportantTooltip(defaultImportantTooltip) {
+	padding: margins(4px, 4px, 4px, 4px);
+	radius: 11px;
+	arrow: 6px;
+}
+
 historySilentToggle: IconButton(historyBotKeyboardShow) {
 	icon: icon {{ "chat/input_silent", historyComposeIconFg }};
 	iconOver: icon {{ "chat/input_silent", historyComposeIconFgOver }};

Telegram/SourceFiles/history/view/controls/history_view_voice_record_bar.cpp

@@ -31,7 +31,9 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "ui/effects/animation_value.h"
 #include "ui/effects/ripple_animation.h"
 #include "ui/text/format_values.h"
+#include "ui/text/text_utilities.h"
 #include "ui/painter.h"
+#include "ui/widgets/tooltip.h"
 #include "ui/rect.h"
 #include "styles/style_chat.h"
 #include "styles/style_chat_helpers.h"
@@ -304,6 +306,49 @@ TTLButton::TTLButton(
 			st::historyRecordVoiceShowDuration);
 	});
 
+	{
+		const auto tooltip = Ui::CreateChild<Ui::ImportantTooltip>(
+			parent.get(),
+			object_ptr<Ui::PaddingWrap<Ui::FlatLabel>>(
+				parent.get(),
+				Ui::MakeNiceTooltipLabel(
+					parent,
+					tr::lng_record_once_active_tooltip(
+						Ui::Text::RichLangValue),
+					st::historyMessagesTTLLabel.minWidth,
+					st::ttlMediaImportantTooltipLabel),
+				st::defaultImportantTooltip.padding),
+			st::historyRecordTooltip);
+		geometryValue(
+		) | rpl::start_with_next([=](const QRect &r) {
+			if (r.isEmpty()) {
+				return;
+			}
+			tooltip->pointAt(r, RectPart::Right, [=](QSize size) {
+				return QPoint(
+					r.left()
+						- size.width()
+						- st::defaultImportantTooltip.padding.left(),
+					r.top()
+						+ r.height()
+						- size.height()
+						+ st::historyRecordTooltip.padding.top());
+			});
+		}, tooltip->lifetime());
+		tooltip->show();
+
+		clicks(
+		) | rpl::start_with_next([=] {
+			const auto toggled = !Ui::AbstractButton::isDisabled();
+			tooltip->toggleAnimated(toggled);
+
+			if (toggled) {
+				constexpr auto kTimeout = crl::time(3000);
+				tooltip->hideAfter(kTimeout);
+			}
+		}, tooltip->lifetime());
+	}
+
 	paintRequest(
 	) | rpl::start_with_next([=](const QRect &clip) {
 		auto p = QPainter(this);

Telegram/lib_ui

@@ -1 +1 @@
-Subproject commit aa39793a91f1186879c15c214a2671d78eab5085
+Subproject commit 08a19be802cef8ee801121906c5f0ce9d2fa65b0