Added animation to voice messages with ttl.

Telegram/Resources/qrc/telegram/animations.qrc

@@ -11,5 +11,7 @@
     <file alias="ttl.tgs">../../animations/ttl.tgs</file>
     <file alias="discussion.tgs">../../animations/discussion.tgs</file>
     <file alias="stats.tgs">../../animations/stats.tgs</file>
+    <file alias="voice_ttl_idle.tgs">../../animations/voice_ttl_idle.tgs</file>
+    <file alias="voice_ttl_start.tgs">../../animations/voice_ttl_start.tgs</file>
   </qresource>
 </RCC>

Telegram/SourceFiles/data/data_media_types.cpp

@@ -1140,6 +1140,10 @@ crl::time MediaFile::ttlSeconds() const {
 	return _ttlSeconds;
 }
 
+bool MediaFile::allowsForward() const {
+	return !ttlSeconds();
+}
+
 bool MediaFile::updateInlineResultMedia(const MTPMessageMedia &media) {
 	if (media.type() != mtpc_messageMediaDocument) {
 		return false;

Telegram/SourceFiles/data/data_media_types.h

@@ -281,6 +281,7 @@ public:
 	bool dropForwardedInfo() const override;
 	bool hasSpoiler() const override;
 	crl::time ttlSeconds() const override;
+	bool allowsForward() const override;
 
 	bool updateInlineResultMedia(const MTPMessageMedia &media) override;
 	bool updateSentMedia(const MTPMessageMedia &media) override;

Telegram/SourceFiles/history/view/media/history_view_document.cpp

@@ -9,6 +9,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 
 #include "base/random.h"
 #include "lang/lang_keys.h"
+#include "lottie/lottie_icon.h"
 #include "storage/localstorage.h"
 #include "main/main_session.h"
 #include "media/player/media_player_float.h" // Media::Player::RoundPainter.
@@ -31,6 +32,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "ui/cached_round_corners.h"
 #include "ui/painter.h"
 #include "ui/power_saving.h"
+#include "ui/rect.h"
 #include "ui/ui_utility.h"
 #include "data/data_session.h"
 #include "data/data_document.h"
@@ -48,6 +50,52 @@ namespace {
 
 constexpr auto kAudioVoiceMsgUpdateView = crl::time(100);
 
+[[nodiscard]] HistoryView::TtlPaintCallback CreateTtlPaintCallback(
+		std::shared_ptr<rpl::lifetime> lifetime,
+		Fn<void()> update) {
+	struct State final {
+		std::unique_ptr<Lottie::Icon> start;
+		std::unique_ptr<Lottie::Icon> idle;
+	};
+	const auto iconSize = Size(std::min(
+		st::historyFileInPause.width(),
+		st::historyFileInPause.height()));
+	const auto state = lifetime->make_state<State>();
+	state->start = Lottie::MakeIcon({
+		.name = u"voice_ttl_start"_q,
+		.color = &st::historyFileInIconFg,
+		.sizeOverride = iconSize,
+	});
+
+	const auto animateSingle = [=](
+			not_null<Lottie::Icon*> icon,
+			Fn<void()> next) {
+		auto callback = [=] {
+			update();
+			if (icon->frameIndex() == icon->framesCount()) {
+				next();
+			}
+		};
+		icon->animate(std::move(callback), 0, icon->framesCount());
+	};
+	const auto animate = [=](auto reanimate) -> void {
+		animateSingle(state->idle.get(), [=] { reanimate(reanimate); });
+	};
+	animateSingle(
+		state->start.get(),
+		[=] {
+			state->idle = Lottie::MakeIcon({
+				.name = u"voice_ttl_idle"_q,
+				.color = &st::historyFileInIconFg,
+				.sizeOverride = iconSize,
+			});
+			animate(animate);
+		});
+	return [=](QPainter &p, QRect r, QColor c) {
+		(state->idle ? state->idle : state->start)->paintInCenter(p, r, c);
+	};
+}
+
 [[nodiscard]] bool OncePlayable(not_null<HistoryItem*> item) {
 	return !item->out() && item->media()->ttlSeconds();
 }
@@ -249,9 +297,11 @@ Document::Document(
 							Ui::Text::WithEntities)
 				});
 				if (lifetime) {
+					_drawTtl = nullptr;
 					base::take(lifetime)->destroy();
 				}
 			}, *lifetime);
+			_drawTtl = CreateTtlPaintCallback(lifetime, [=] { repaint(); });
 
 			return false;
 		});
@@ -670,7 +720,9 @@ void Document::draw(
 			: nullptr;
 
 		const auto paintContent = [&](QPainter &q) {
-			if (previous && radialOpacity > 0. && radialOpacity < 1.) {
+			if (_drawTtl) {
+				_drawTtl(q, inner, context.st->historyFileInIconFg()->c);
+			} else if (previous && radialOpacity > 0. && radialOpacity < 1.) {
 				PaintInterpolatedIcon(q, icon, *previous, radialOpacity, inner);
 			} else {
 				icon.paintInCenter(q, inner);

Telegram/SourceFiles/history/view/media/history_view_document.h

@@ -25,6 +25,8 @@ class String;
 
 namespace HistoryView {
 
+using TtlPaintCallback = Fn<void(QPainter&, QRect, QColor)>;
+
 class Document final
 	: public File
 	, public RuntimeComposer<Document> {
@@ -178,6 +180,8 @@ private:
 
 	mutable TooltipFilename _tooltipFilename;
 
+	TtlPaintCallback _drawTtl;
+
 	bool _transcribedRound = false;
 
 };