Added ability to edit GIFs.

- Added to Media::Clip::MakeReader new constructor to create
 animated preview with remoteContent.

Telegram/SourceFiles/apiwrap.cpp

@@ -4659,6 +4659,9 @@ void ApiWrap::editUploadedFile(
 	if (!item) {
 		return;
 	}
+	if (!item->media()) {
+		return;
+	}
 
 	auto sentEntities = TextUtilities::EntitiesToMTP(
 		item->originalText().entities,
@@ -4669,21 +4672,31 @@ void ApiWrap::editUploadedFile(
 	flagsEditMsg |= MTPmessages_EditMessage::Flag::f_entities;
 	flagsEditMsg |= MTPmessages_EditMessage::Flag::f_media;
 
-	MTPinputMedia media = MTP_inputMediaEmpty();
+	const auto media = [&]() -> std::optional<MTPInputMedia> {
+		if (!isDocument) {
+			if (!item->media()->photo()) {
+				return std::nullopt;
+			}
+			return MTP_inputMediaUploadedPhoto(
+				MTP_flags(0),
+				file,
+				MTPVector<MTPInputDocument>(),
+				MTP_int(0));
+		}
 
-	if (isDocument) {
 		const auto document = item->media()->document();
 		if (!document) {
-			return;
+			return std::nullopt;
 		}
 
 		const auto flags = MTPDinputMediaUploadedDocument::Flags(0)
 			| (thumb
 				? MTPDinputMediaUploadedDocument::Flag::f_thumb
 				: MTPDinputMediaUploadedDocument::Flag(0))
-			// Never edit video as gif.
-			| MTPDinputMediaUploadedDocument::Flag::f_nosound_video;
-		media = MTP_inputMediaUploadedDocument(
+			| (item->groupId()
+				? MTPDinputMediaUploadedDocument::Flag::f_nosound_video
+				: MTPDinputMediaUploadedDocument::Flag(0));
+		return MTP_inputMediaUploadedDocument(
 			MTP_flags(flags),
 			file,
 			thumb ? *thumb : MTPInputFile(),
@@ -4691,16 +4704,10 @@ void ApiWrap::editUploadedFile(
 			ComposeSendingDocumentAttributes(document),
 			MTPVector<MTPInputDocument>(),
 			MTP_int(0));
-	} else {
-		const auto photo = item->media()->photo();
-		if (!photo) {
-			return;
-		}
-		media = MTP_inputMediaUploadedPhoto(
-			MTP_flags(0),
-			file,
-			MTPVector<MTPInputDocument>(),
-			MTP_int(0));
+	}();
+
+	if (!media) {
+		return;
 	}
 
 	request(MTPmessages_EditMessage(
@@ -4708,7 +4715,7 @@ void ApiWrap::editUploadedFile(
 		item->history()->peer->input,
 		MTP_int(item->id),
 		MTP_string(item->originalText().text),
-		media,
+		*media,
 		MTPReplyMarkup(),
 		sentEntities
 	)).done([=](const MTPUpdates &result) {

Telegram/SourceFiles/boxes/edit_caption_box.cpp

@@ -298,10 +298,10 @@ void EditCaptionBox::updateEmojiPanelGeometry() {
 }
 
 void EditCaptionBox::prepareGifPreview(DocumentData* document) {
-	const auto newPath = getNewMediaPath();
+	const auto isListEmpty = _preparedList.files.empty();
 	if (_gifPreview) {
 		return;
-	} else if (!document && newPath.isEmpty()) {
+	} else if (!document && isListEmpty) {
 		return;
 	}
 	const auto callback = [=](Media::Clip::Notification notification) {
@@ -312,10 +312,17 @@ void EditCaptionBox::prepareGifPreview(DocumentData* document) {
 			document,
 			_msgId,
 			callback);
-	} else if (!newPath.isEmpty()) {
-		_gifPreview = Media::Clip::MakeReader(
-			newPath,
-			callback);
+	} else if (!isListEmpty) {
+		const auto file = &_preparedList.files.front();
+		if (file->path.isEmpty()) {
+			_gifPreview = Media::Clip::MakeReader(
+				file->content,
+				callback);
+		} else {
+			_gifPreview = Media::Clip::MakeReader(
+				file->path,
+				callback);
+		}
 	}
 	if (_gifPreview) _gifPreview->setAutoplay();
 }
@@ -329,6 +336,23 @@ void EditCaptionBox::clipCallback(Media::Clip::Notification notification) {
 		}
 
 		if (_gifPreview && _gifPreview->ready() && !_gifPreview->started()) {
+			const auto calculateGifDimensions = [&]() {
+				const auto scaled = QSize(
+					_gifPreview->width(),
+					_gifPreview->height()).scaled(
+						st::sendMediaPreviewSize * cIntRetinaFactor(),
+						st::confirmMaxHeight * cIntRetinaFactor(),
+						Qt::KeepAspectRatio);
+				_thumbw = _gifw = scaled.width();
+				_thumbh = _gifh = scaled.height();
+				_thumbx = _gifx = (st::boxWideWidth - _gifw) / 2;
+				updateBoxSize();
+			};
+			// If gif file is not mp4,
+			// Its dimension values will be known only after reading.
+			if (_gifw <= 0 || _gifh <= 0) {
+				calculateGifDimensions();
+			}
 			const auto s = QSize(_gifw, _gifh);
 			_gifPreview->start(s.width(), s.height(), s.width(), s.height(), ImageRoundRadius::None, RectPart::None);
 		}
@@ -362,17 +386,19 @@ void EditCaptionBox::updateEditPreview() {
 	_thumbw = _thumbh = _thumbx = 0;
 	_gifw = _gifh = _gifx = 0;
 
+	auto isGif = false;
 	auto shouldAsDoc = true;
 	if (const auto image = base::get_if<Info::Image>(fileMedia)) {
 		shouldAsDoc = !Storage::ValidateThumbDimensions(
 			image->data.width(),
 			image->data.height());
-		_photo = !shouldAsDoc;
+		isGif = image->animated;
+		_animated = isGif;
+		_photo = !isGif && !shouldAsDoc;
 		_isImage = true;
 	} else if (const auto video = base::get_if<Info::Video>(fileMedia)) {
+		isGif = video->isGifv;
 		_animated = true;
-		// Never edit video as gif.
-		video->isGifv = false;
 		shouldAsDoc = false;
 	}
 	if (shouldAsDoc) {
@@ -405,6 +431,12 @@ void EditCaptionBox::updateEditPreview() {
 		_thumbw = _thumb.width() / cIntRetinaFactor();
 		_thumbh = _thumb.height() / cIntRetinaFactor();
 		_thumbx = (st::boxWideWidth - _thumbw) / 2;
+		if (isGif) {
+			_gifw = _thumbw;
+			_gifh = _thumbh;
+			_gifx = _thumbx;
+			prepareGifPreview();
+		}
 	}
 	updateEditMediaButton();
 	captionResized();
@@ -427,8 +459,7 @@ void EditCaptionBox::createEditMediaButton() {
 		}
 
 		const auto isValidFile = [](QString mimeType) {
-			if (mimeType == qstr("image/webp")
-				|| mimeType == qstr("image/gif")) {
+			if (mimeType == qstr("image/webp")) {
 				Ui::show(
 					Box<InformBox>(lang(lng_edit_media_invalid_file)),
 					LayerOption::KeepOther);
@@ -477,8 +508,10 @@ void EditCaptionBox::createEditMediaButton() {
 				const auto valid = media->match([&](const Info::Image &data) {
 					return Storage::ValidateThumbDimensions(
 						data.data.width(),
-						data.data.height());
-				}, [&](const Info::Video &data) {
+						data.data.height())
+						&& !data.animated;
+				}, [&](Info::Video &data) {
+					data.isGifv = false;
 					return true;
 				}, [](auto &&other) {
 					return false;

Telegram/SourceFiles/data/data_media_types.cpp

@@ -665,7 +665,6 @@ bool MediaFile::allowsEditCaption() const {
 bool MediaFile::allowsEditMedia() const {
 	return !_document->isVideoMessage()
 		&& !_document->sticker()
-		&& !_document->isGifv()
 		&& !_document->isVoiceMessage();
 }
 

Telegram/SourceFiles/media/clip/media_clip_reader.cpp

@@ -98,6 +98,13 @@ Reader::Reader(not_null<DocumentData*> document, FullMsgId msgId, Callback &&cal
 	init(document->location(), document->data());
 }
 
+Reader::Reader(const QByteArray &data, Callback &&callback, Mode mode, crl::time seekMs)
+: _callback(std::move(callback))
+, _mode(mode)
+, _seekPositionMs(seekMs) {
+	init(FileLocation(QString()), data);
+}
+
 void Reader::init(const FileLocation &location, const QByteArray &data) {
 	if (threads.size() < ClipThreadsCount) {
 		_threadIndex = threads.size();

Telegram/SourceFiles/media/clip/media_clip_reader.h

@@ -51,6 +51,7 @@ public:
 
 	Reader(const QString &filepath, Callback &&callback, Mode mode = Mode::Gif, crl::time seekMs = 0);
 	Reader(not_null<DocumentData*> document, FullMsgId msgId, Callback &&callback, Mode mode = Mode::Gif, crl::time seekMs = 0);
+	Reader(const QByteArray &data, Callback &&callback, Mode mode = Mode::Gif, crl::time seekMs = 0);
 
 	// Reader can be already deleted.
 	static void callback(Reader *reader, qint32 threadIndex, qint32 notification);