Export file thumbs, use in video messages.

Telegram/Resources/export_html/css/style.css

@@ -119,45 +119,45 @@ pre {
 }
 .color_red,
 .userpic1,
-.media_call .thumb,
+.media_call .fill,
-.media_file .thumb,
+.media_file .fill,
-.media_live_location .thumb {
+.media_live_location .fill {
     background-color: #ff5555;
 }
 .color_green,
 .userpic2,
-.media_call.success .thumb {
+.media_call.success .fill {
     background-color: #64bf47;
 }
 .color_yellow,
 .userpic3,
-.media_venue .thumb {
+.media_venue .fill {
     background-color: #ffab00;
 }
 .color_blue,
 .userpic4,
-.media_audio_file .thumb,
+.media_audio_file .fill,
-.media_voice_message .thumb {
+.media_voice_message .fill {
     background-color: #4f9cd9;
 }
 .color_purple,
 .userpic5,
-.media_game .thumb {
+.media_game .fill {
     background-color: #9884e8;
 }
 .color_pink,
 .userpic6,
-.media_invoice .thumb {
+.media_invoice .fill {
     background-color: #e671a5;
 }
 .color_sea,
 .userpic7,
-.media_location .thumb {
+.media_location .fill {
     background-color: #47bcd1;
 }
 .color_orange,
 .userpic8,
-.media_contact .thumb {
+.media_contact .fill {
     background-color: #ff8c44;
 }
 .personal_info {
@@ -289,10 +289,13 @@ a.block_link:hover {
     margin: 0 -10px;
     padding: 5px 10px;
 }
+.default .media .fill,
 .default .media .thumb {
     width: 48px;
     height: 48px;
     border-radius: 50%;
+}
+.default .media .fill {
     background-repeat: no-repeat;
     background-position: 12px 12px;
     background-size: 24px 24px;
@@ -399,30 +402,30 @@ a.block_link:hover {
 .page_header a.content {
     background-image: url(../images/back@2x.png);
 }
-.media_call .thumb {
+.media_call .fill {
     background-image: url(../images/media_call@2x.png)
 }
-.media_contact .thumb {
+.media_contact .fill {
     background-image: url(../images/media_contact@2x.png)
 }
-.media_file .thumb {
+.media_file .fill {
     background-image: url(../images/media_file@2x.png)
 }
-.media_game .thumb {
+.media_game .fill {
     background-image: url(../images/media_game@2x.png)
 }
-.media_live_location .thumb,
+.media_live_location .fill,
-.media_location .thumb,
+.media_location .fill,
-.media_venue .thumb {
+.media_venue .fill {
     background-image: url(../images/media_location@2x.png)
 }
-.media_audio_file .thumb {
+.media_audio_file .fill {
     background-image: url(../images/media_music@2x.png)
 }
-.media_invoice .thumb {
+.media_invoice .fill {
     background-image: url(../images/media_shop@2x.png)
 }
-.media_voice_message .thumb {
+.media_voice_message .fill {
     background-image: url(../images/media_voice@2x.png)
 }
 }

Telegram/SourceFiles/export/data/export_data_types.cpp

@@ -389,17 +389,36 @@ Document ParseDocument(
 	data.match([&](const MTPDdocument &data) {
 		result.id = data.vid.v;
 		result.date = data.vdate.v;
+		result.mime = ParseString(data.vmime_type);
+		ParseAttributes(result, data.vattributes);
+
 		result.file.size = data.vsize.v;
 		result.file.location.dcId = data.vdc_id.v;
 		result.file.location.data = MTP_inputDocumentFileLocation(
 			data.vid,
 			data.vaccess_hash,
 			data.vversion);
-		result.mime = ParseString(data.vmime_type);
+		const auto path = result.file.suggestedPath = suggestedFolder
-		ParseAttributes(result, data.vattributes);
-		result.file.suggestedPath = suggestedFolder
 			+ DocumentFolder(result) + '/'
 			+ CleanDocumentName(ComputeDocumentName(context, result));
+
+		result.thumb = data.vthumb.match([](const MTPDphotoSizeEmpty &) {
+			return Image();
+		}, [&](const auto &data) {
+			auto result = Image();
+			result.width = data.vw.v;
+			result.height = data.vh.v;
+			result.file.location = ParseLocation(data.vlocation);
+			if constexpr (MTPDphotoCachedSize::Is<decltype(data)>()) {
+				result.file.content = data.vbytes.v;
+				result.file.size = result.file.content.size();
+			} else {
+				result.file.content = QByteArray();
+				result.file.size = data.vsize.v;
+			}
+			result.file.suggestedPath = path + "_thumb.jpg";
+			return result;
+		});
 	}, [&](const MTPDdocumentEmpty &data) {
 		result.id = data.vid.v;
 	});
@@ -735,6 +754,24 @@ const File &Media::file() const {
 	});
 }
 
+Image &Media::thumb() {
+	return content.match([](Document &data) -> Image& {
+		return data.thumb;
+	}, [](auto&) -> Image& {
+		static Image result;
+		return result;
+	});
+}
+
+const Image &Media::thumb() const {
+	return content.match([](const Document &data) -> const Image& {
+		return data.thumb;
+	}, [](const auto &) -> const Image& {
+		static const Image result;
+		return result;
+	});
+}
+
 Media ParseMedia(
 		ParseMediaContext &context,
 		const MTPMessageMedia &data,
@@ -936,6 +973,14 @@ const File &Message::file() const {
 	return media.file();
 }
 
+Image &Message::thumb() {
+	return media.thumb();
+}
+
+const Image &Message::thumb() const {
+	return media.thumb();
+}
+
 Message ParseMessage(
 		ParseMediaContext &context,
 		const MTPMessage &data,

Telegram/SourceFiles/export/data/export_data_types.h

@@ -114,6 +114,7 @@ struct Document {
 	TimeId date = 0;
 
 	File file;
+	Image thumb;
 
 	Utf8String name;
 	Utf8String mime;
@@ -292,6 +293,8 @@ struct Media {
 
 	File &file();
 	const File &file() const;
+	Image &thumb();
+	const Image &thumb() const;
 };
 
 struct ParseMediaContext {
@@ -478,6 +481,8 @@ struct Message {
 
 	File &file();
 	const File &file() const;
+	Image &thumb();
+	const Image &thumb() const;
 };
 
 Message ParseMessage(

Telegram/SourceFiles/export/export_api_wrap.cpp

@@ -139,7 +139,7 @@ struct ApiWrap::UserpicsProcess {
 	base::optional<Data::UserpicsSlice> slice;
 	uint64 maxId = 0;
 	bool lastSlice = false;
-	int fileIndex = -1;
+	int fileIndex = 0;
 };
 
 struct ApiWrap::OtherDataProcess {
@@ -210,7 +210,7 @@ struct ApiWrap::ChatProcess {
 	Data::ParseMediaContext context;
 	base::optional<Data::MessagesSlice> slice;
 	bool lastSlice = false;
-	int fileIndex = -1;
+	int fileIndex = 0;
 };
 
 
@@ -727,7 +727,7 @@ void ApiWrap::loadUserpicsFiles(Data::UserpicsSlice &&slice) {
 		_userpicsProcess->lastSlice = true;
 	}
 	_userpicsProcess->slice = std::move(slice);
-	_userpicsProcess->fileIndex = -1;
+	_userpicsProcess->fileIndex = 0;
 	loadNextUserpic();
 }
 
@@ -735,14 +735,11 @@ void ApiWrap::loadNextUserpic() {
 	Expects(_userpicsProcess != nullptr);
 	Expects(_userpicsProcess->slice.has_value());
 
-	auto &list = _userpicsProcess->slice->list;
+	for (auto &list = _userpicsProcess->slice->list
-	while (true) {
+		; _userpicsProcess->fileIndex < list.size()
-		const auto index = ++_userpicsProcess->fileIndex;
+		; ++_userpicsProcess->fileIndex) {
-		if (index >= list.size()) {
-			break;
-		}
 		const auto ready = processFileLoad(
-			list[index].image.file,
+			list[_userpicsProcess->fileIndex].image.file,
 			[=](FileProgress value) { return loadUserpicProgress(value); },
 			[=](const QString &path) { loadUserpicDone(path); });
 		if (!ready) {
@@ -1213,7 +1210,7 @@ void ApiWrap::loadMessagesFiles(Data::MessagesSlice &&slice) {
 		_chatProcess->lastSlice = true;
 	}
 	_chatProcess->slice = std::move(slice);
-	_chatProcess->fileIndex = -1;
+	_chatProcess->fileIndex = 0;
 
 	loadNextMessageFile();
 }
@@ -1222,23 +1219,31 @@ void ApiWrap::loadNextMessageFile() {
 	Expects(_chatProcess != nullptr);
 	Expects(_chatProcess->slice.has_value());
 
-	auto &list = _chatProcess->slice->list;
+	for (auto &list = _chatProcess->slice->list
-	while (true) {
+		; _chatProcess->fileIndex < list.size()
-		const auto index = ++_chatProcess->fileIndex;
+		; ++_chatProcess->fileIndex) {
-		if (index >= list.size()) {
-			break;
-		}
 		const auto fileProgress = [=](FileProgress value) {
 			return loadMessageFileProgress(value);
 		};
 		const auto ready = processFileLoad(
-			list[index].file(),
+			list[_chatProcess->fileIndex].file(),
 			fileProgress,
 			[=](const QString &path) { loadMessageFileDone(path); },
-			&list[index]);
+			&list[_chatProcess->fileIndex]);
 		if (!ready) {
 			return;
 		}
+		const auto thumbProgress = [=](FileProgress value) {
+			return loadMessageThumbProgress(value);
+		};
+		const auto thumbReady = processFileLoad(
+			list[_chatProcess->fileIndex].thumb().file,
+			thumbProgress,
+			[=](const QString &path) { loadMessageThumbDone(path); },
+			&list[_chatProcess->fileIndex]);
+		if (!thumbReady) {
+			return;
+		}
 	}
 	finishMessagesSlice();
 }
@@ -1296,6 +1301,25 @@ void ApiWrap::loadMessageFileDone(const QString &relativePath) {
 	loadNextMessageFile();
 }
 
+bool ApiWrap::loadMessageThumbProgress(FileProgress progress) {
+	return loadMessageFileProgress(progress);
+}
+
+void ApiWrap::loadMessageThumbDone(const QString &relativePath) {
+	Expects(_chatProcess != nullptr);
+	Expects(_chatProcess->slice.has_value());
+	Expects((_chatProcess->fileIndex >= 0)
+		&& (_chatProcess->fileIndex < _chatProcess->slice->list.size()));
+
+	const auto index = _chatProcess->fileIndex;
+	auto &file = _chatProcess->slice->list[index].thumb().file;
+	file.relativePath = relativePath;
+	if (relativePath.isEmpty()) {
+		file.skipReason = Data::File::SkipReason::Unavailable;
+	}
+	loadNextMessageFile();
+}
+
 void ApiWrap::finishMessages() {
 	Expects(_chatProcess != nullptr);
 	Expects(!_chatProcess->slice.has_value());
@@ -1311,7 +1335,8 @@ bool ApiWrap::processFileLoad(
 		Data::Message *message) {
 	using SkipReason = Data::File::SkipReason;
 
-	if (!file.relativePath.isEmpty()) {
+	if (!file.relativePath.isEmpty()
+		|| file.skipReason != SkipReason::None) {
 		return true;
 	} else if (!file.location && file.content.isEmpty()) {
 		file.skipReason = SkipReason::Unavailable;

Telegram/SourceFiles/export/export_api_wrap.h

@@ -150,6 +150,8 @@ private:
 	void loadNextMessageFile();
 	bool loadMessageFileProgress(FileProgress value);
 	void loadMessageFileDone(const QString &relativePath);
+	bool loadMessageThumbProgress(FileProgress value);
+	void loadMessageThumbDone(const QString &relativePath);
 	void finishMessagesSlice();
 	void finishMessages();
 

Telegram/SourceFiles/export/output/export_output_html.cpp

@@ -262,10 +262,6 @@ Data::Utf8String FormatUsername(const Data::Utf8String &username) {
 	return username.isEmpty() ? username : ('@' + username);
 }
 
-QByteArray FormatFilePath(const Data::File &file) {
-	return file.relativePath.toUtf8();
-}
-
 bool DisplayDate(TimeId date, TimeId previousDate) {
 	if (!previousDate) {
 		return true;
@@ -353,6 +349,7 @@ struct MediaData {
 	QByteArray description;
 	QByteArray status;
 	QByteArray classes;
+	QString thumb;
 	QString link;
 };
 
@@ -884,33 +881,6 @@ auto HtmlWriter::Wrap::pushMessage(
 			"of Telegram Desktop. Please update the application.") };
 	}
 
-	using SkipReason = Data::File::SkipReason;
-	const auto formatPath = [&](
-			const Data::File &file,
-			const QByteArray &label,
-			const QByteArray &name = QByteArray()) {
-		Expects(!file.relativePath.isEmpty()
-			|| file.skipReason != SkipReason::None);
-
-		const auto pre = name.isEmpty()
-			? QByteArray()
-			: SerializeString(name + ' ');
-		switch (file.skipReason) {
-		case SkipReason::Unavailable:
-			return pre + "(" + label + " unavailable, "
-				"please try again later)";
-		case SkipReason::FileSize:
-			return pre + "(" + label + " exceeds maximum size. "
-				"Change data exporting settings to download.)";
-		case SkipReason::FileType:
-			return pre + "(" + label + " not included. "
-				"Change data exporting settings to download.)";
-		case SkipReason::None: return SerializeLink(
-			FormatFilePath(file),
-			relativePath(file.relativePath));
-		}
-		Unexpected("Skip reason while writing file path.");
-	};
 	const auto wrapReplyToLink = [&](const QByteArray &text) {
 		return "<a href=\"#message"
 			+ NumberToString(message.replyToMsgId)
@@ -1184,8 +1154,16 @@ QByteArray HtmlWriter::Wrap::pushMedia(
 			}
 		}));
 	}
-	result.append(pushDiv("thumb pull_left"));
+	if (data.thumb.isEmpty()) {
-	result.append(popTag());
+		result.append(pushDiv("fill pull_left"));
+		result.append(popTag());
+	} else {
+		result.append(pushTag("img", {
+			{ "class", "thumb pull_left" },
+			{ "src", relativePath(data.thumb).toUtf8() },
+			{ "empty", "" }
+		}));
+	}
 	result.append(pushDiv("body"));
 	if (!data.title.isEmpty()) {
 		result.append(pushDiv("title bold"));
@@ -1248,10 +1226,10 @@ MediaData HtmlWriter::Wrap::prepareMediaData(
 			+ "x"
 			+ NumberToString(photo.image.height);
 		result.classes = "media_file"; // #TODO export
-		result.link = FormatFilePath(photo.image.file);
+		result.link = photo.image.file.relativePath;
 	}, [&](const Document &data) {
 		// #TODO export: sticker + thumb (video, video message) + self destruct (ttl)
-		result.link = FormatFilePath(data.file);
+		result.link = data.file.relativePath;
 		if (data.isSticker) {
 			result.title = "Sticker";
 			result.status = data.stickerEmoji;
@@ -1259,7 +1237,8 @@ MediaData HtmlWriter::Wrap::prepareMediaData(
 		} else if (data.isVideoMessage) {
 			result.title = "Video message";
 			result.status = FormatDuration(data.duration);
-			result.classes = "media_file"; // #TODO export
+			result.thumb = data.thumb.file.relativePath;
+			result.classes = "media_file";
 		} else if (data.isVoiceMessage) {
 			result.title = "Voice message";
 			result.status = FormatDuration(data.duration);
@@ -1292,7 +1271,7 @@ MediaData HtmlWriter::Wrap::prepareMediaData(
 		result.status = FormatPhoneNumber(data.info.phoneNumber);
 		if (!data.vcard.content.isEmpty()) {
 			result.status += " - vCard";
-			result.link = FormatFilePath(data.vcard);
+			result.link = data.vcard.relativePath;
 		}
 	}, [&](const GeoPoint &data) {
 		if (message.media.ttl) {

Telegram/SourceFiles/export/output/export_output_json.cpp

@@ -486,6 +486,9 @@ QByteArray SerializeMessage(
 		pushTTL();
 	}, [&](const Document &data) {
 		pushPath(data.file, "file");
+		if (data.thumb.width > 0) {
+			pushPath(data.thumb.file, "thumbnail");
+		}
 		const auto pushType = [&](const QByteArray &value) {
 			push("media_type", value);
 		};