Show GIF in Mediaview on click.

This way you can watch GIF on full screen and switch between them.

.gitignore

@@ -16,6 +16,7 @@
 /Telegram/Resources/art/grid_200x.png
 /Telegram/Resources/art/sprite_125x.png
 /Telegram/Resources/art/sprite_150x.png
+/Telegram/Debug/
 /Telegram/*.user
 *.vcxproj*
 *.sln

Telegram/Resources/langs/lang.strings

@@ -958,6 +958,7 @@ Copyright (c) 2014-2017 John Preston, https://desktop.telegram.org
 "lng_context_delete_file" = "Delete File";
 "lng_context_close_file" = "Close File";
 "lng_context_copy_text" = "Copy Text";
+"lng_context_open_gif" = "Open GIF";
 "lng_context_save_gif" = "Save GIF";
 "lng_context_to_msg" = "Go To Message";
 "lng_context_reply_msg" = "Reply";

Telegram/SourceFiles/history.h

@@ -138,22 +138,6 @@ enum MediaOverviewType {
 	OverviewCount
 };
 
-inline MTPMessagesFilter typeToMediaFilter(MediaOverviewType &type) {
-	switch (type) {
-	case OverviewPhotos: return MTP_inputMessagesFilterPhotos();
-	case OverviewVideos: return MTP_inputMessagesFilterVideo();
-	case OverviewMusicFiles: return MTP_inputMessagesFilterMusic();
-	case OverviewFiles: return MTP_inputMessagesFilterDocument();
-	case OverviewVoiceFiles: return MTP_inputMessagesFilterVoice();
-	case OverviewRoundVoiceFiles: return MTP_inputMessagesFilterRoundVoice();
-	case OverviewLinks: return MTP_inputMessagesFilterUrl();
-	case OverviewChatPhotos: return MTP_inputMessagesFilterChatPhotos();
-	case OverviewCount: break;
-	default: type = OverviewCount; break;
-	}
-	return MTPMessagesFilter();
-}
-
 struct TextWithTags {
 	struct Tag {
 		int offset, length;

Telegram/SourceFiles/history/history_inner_widget.cpp

@@ -1291,6 +1291,9 @@ void HistoryInner::showContextMenu(QContextMenuEvent *e, bool showFromTouch) {
 				_menu->addAction(lang(lng_context_cancel_download), this, SLOT(cancelContextDownload()))->setEnabled(true);
 			} else {
 				if (document->loaded() && document->isGifv()) {
+					if (!cAutoPlayGif()) {
+						_menu->addAction(lang(lng_context_open_gif), this, SLOT(openContextGif()))->setEnabled(true);
+					}
 					_menu->addAction(lang(lng_context_save_gif), this, SLOT(saveContextGif()))->setEnabled(true);
 				}
 				if (!document->filepath(DocumentData::FilePathResolveChecked).isEmpty()) {
@@ -1384,6 +1387,9 @@ void HistoryInner::showContextMenu(QContextMenuEvent *e, bool showFromTouch) {
 								_menu->addAction(lang(lng_context_cancel_download), this, SLOT(cancelContextDownload()))->setEnabled(true);
 							} else {
 								if (document->isGifv()) {
+									if (!cAutoPlayGif()) {
+										_menu->addAction(lang(lng_context_open_gif), this, SLOT(openContextGif()))->setEnabled(true);
+									}
 									_menu->addAction(lang(lng_context_save_gif), this, SLOT(saveContextGif()))->setEnabled(true);
 								}
 								if (!document->filepath(DocumentData::FilePathResolveChecked).isEmpty()) {
@@ -1522,6 +1528,16 @@ void HistoryInner::saveDocumentToFile(DocumentData *document) {
 	DocumentSaveClickHandler::doSave(document, true);
 }
 
+void HistoryInner::openContextGif() {
+	if (auto item = App::contextItem()) {
+		if (auto media = item->getMedia()) {
+			if (auto document = media->getDocument()) {
+				App::wnd()->showDocument(document, item);
+			}
+		}
+	}
+}
+
 void HistoryInner::saveContextGif() {
 	if (auto item = App::contextItem()) {
 		if (auto media = item->getMedia()) {

Telegram/SourceFiles/history/history_inner_widget.h

@@ -118,6 +118,7 @@ public slots:
 	void cancelContextDownload();
 	void showContextInFolder();
 	void saveContextGif();
+	void openContextGif();
 	void copyContextText();
 	void copySelectedText();
 

Telegram/SourceFiles/history/history_media_types.cpp

@@ -1707,6 +1707,7 @@ HistoryGif::HistoryGif(HistoryItem *parent, DocumentData *document, const QStrin
 , _data(document)
 , _caption(st::minPhotoSize - st::msgPadding.left() - st::msgPadding.right()) {
 	setDocumentLinks(_data, true);
+	_openInMediaviewLink = MakeShared<DocumentOpenClickHandler>(_data);
 
 	setStatusSize(FileStatusSizeReady);
 
@@ -2217,6 +2218,8 @@ HistoryTextState HistoryGif::getState(int x, int y, HistoryStateRequest request)
 			result.link = _cancell;
 		} else if (!_gif || !cAutoPlayGif() || _data->isRoundVideo()) {
 			result.link = _data->loaded() ? _openl : (_data->loading() ? _cancell : _savel);
+		} else {
+			result.link = _openInMediaviewLink;
 		}
 		if (!isChildMedia) {
 			int32 fullRight = usex + skipx + usew, fullBottom = skipy + height;

Telegram/SourceFiles/history/history_media_types.h

@@ -580,6 +580,7 @@ private:
 	}
 
 	gsl::not_null<DocumentData*> _data;
+	ClickHandlerPtr _openInMediaviewLink;
 	int32 _thumbw = 1;
 	int32 _thumbh = 1;
 	Text _caption;

Telegram/SourceFiles/mainwidget.cpp

@@ -71,6 +71,25 @@ Copyright (c) 2014-2017 John Preston, https://desktop.telegram.org
 #include "calls/calls_instance.h"
 #include "calls/calls_top_bar.h"
 
+namespace {
+
+MTPMessagesFilter typeToMediaFilter(MediaOverviewType &type) {
+	switch (type) {
+	case OverviewPhotos: return MTP_inputMessagesFilterPhotos();
+	case OverviewVideos: return MTP_inputMessagesFilterVideo();
+	case OverviewMusicFiles: return MTP_inputMessagesFilterMusic();
+	case OverviewFiles: return MTP_inputMessagesFilterDocument();
+	case OverviewVoiceFiles: return MTP_inputMessagesFilterVoice();
+	case OverviewRoundVoiceFiles: return MTP_inputMessagesFilterRoundVoice();
+	case OverviewGIFs: return MTP_inputMessagesFilterGif();
+	case OverviewLinks: return MTP_inputMessagesFilterUrl();
+	case OverviewChatPhotos: return MTP_inputMessagesFilterChatPhotos();
+	default: return MTP_inputMessagesFilterEmpty();
+	}
+}
+
+} // namespace
+
 StackItemSection::StackItemSection(std::unique_ptr<Window::SectionMemento> &&memento) : StackItem(nullptr)
 , _memento(std::move(memento)) {
 }
@@ -1335,11 +1354,13 @@ void MainWidget::searchMessages(const QString &query, PeerData *inPeer) {
 }
 
 bool MainWidget::preloadOverview(PeerData *peer, MediaOverviewType type) {
-	MTPMessagesFilter filter = typeToMediaFilter(type);
+	auto filter = typeToMediaFilter(type);
-	if (type == OverviewCount) return false;
+	if (filter.type() == mtpc_inputMessagesFilterEmpty) {
+		return false;
+	}
 
-	History *h = App::history(peer->id);
+	auto history = App::history(peer->id);
-	if (h->overviewCountLoaded(type) || _overviewPreload[type].contains(peer)) {
+	if (history->overviewCountLoaded(type) || _overviewPreload[type].contains(peer)) {
 		return false;
 	}
 
@@ -1399,13 +1420,17 @@ bool MainWidget::overviewFailed(PeerData *peer, const RPCError &error, mtpReques
 void MainWidget::loadMediaBack(PeerData *peer, MediaOverviewType type, bool many) {
 	if (_overviewLoad[type].constFind(peer) != _overviewLoad[type].cend()) return;
 
-	History *history = App::history(peer->id);
+	auto history = App::history(peer->id);
-	if (history->overviewLoaded(type)) return;
+	if (history->overviewLoaded(type)) {
+		return;
+	}
 
-	MsgId minId = history->overviewMinId(type);
+	auto minId = history->overviewMinId(type);
-	int32 limit = (many || history->overview[type].size() > MediaOverviewStartPerPage) ? SearchPerPage : MediaOverviewStartPerPage;
+	auto limit = (many || history->overview[type].size() > MediaOverviewStartPerPage) ? SearchPerPage : MediaOverviewStartPerPage;
-	MTPMessagesFilter filter = typeToMediaFilter(type);
+	auto filter = typeToMediaFilter(type);
-	if (type == OverviewCount) return;
+	if (filter.type() == mtpc_inputMessagesFilterEmpty) {
+		return;
+	}
 
 	_overviewLoad[type].insert(peer, MTP::send(MTPmessages_Search(MTP_flags(0), peer->input, MTPstring(), filter, MTP_int(0), MTP_int(0), MTP_int(0), MTP_int(minId), MTP_int(limit)), rpcDone(&MainWidget::overviewLoaded, history)));
 }

Telegram/SourceFiles/mediaview.cpp

@@ -368,7 +368,7 @@ void MediaView::updateControls() {
 		_dateNav = myrtlrect(st::mediaviewTextLeft, height() - st::mediaviewTextTop, st::mediaviewFont->width(_dateText), st::mediaviewFont->height);
 	}
 	updateHeader();
-	if (_photo || (_history && (_overview == OverviewPhotos || _overview == OverviewChatPhotos || _overview == OverviewFiles || _overview == OverviewVideos))) {
+	if (_photo || (_history && _overview != OverviewCount)) {
 		_leftNavVisible = (_index > 0) || (_index == 0 && (
 			(!_msgmigrated && _history && _history->overview[_overview].size() < _history->overviewCount(_overview)) ||
 			(_msgmigrated && _migrated && _migrated->overview[_overview].size() < _migrated->overviewCount(_overview)) ||
@@ -1152,7 +1152,7 @@ void MediaView::showDocument(DocumentData *doc, HistoryItem *context) {
 	_canForward = _msgid > 0;
 	_canDelete = context ? context->canDelete() : false;
 	if (_history) {
-		_overview = doc->isVideo() ? OverviewVideos : OverviewFiles;
+		_overview = doc->isGifv() ? OverviewGIFs : doc->isVideo() ? OverviewVideos : OverviewFiles;
 		findCurrent();
 	}
 	if (doc->isVideo() || doc->isRoundVideo()) {
@@ -2153,7 +2153,7 @@ bool MediaView::moveToNext(int32 delta) {
 		}
 		return false;
 	}
-	if ((_history && _overview != OverviewPhotos && _overview != OverviewChatPhotos && _overview != OverviewFiles && _overview != OverviewVideos) || (_overview == OverviewCount && !_user)) {
+	if (_overview == OverviewCount && (_history || !_user)) {
 		return false;
 	}
 	if (_msgmigrated && !_history->overviewLoaded(_overview)) {