Click on sticker now opens sticker pack, if the sticker is from pack.

Telegram/SourceFiles/history.cpp

@@ -5138,6 +5138,33 @@ bool HistoryGif::dataLoaded() const {
 	return (!_parent || _parent->id > 0) ? _data->loaded() : false;
 }
 
+namespace {
+
+class StickerClickHandler : public LeftButtonClickHandler {
+public:
+	StickerClickHandler(const HistoryItem *item) : _item(item) {
+	}
+
+protected:
+	void onClickImpl() const override {
+		if (HistoryMedia *media = _item->getMedia()) {
+			if (DocumentData *document = media->getDocument()) {
+				if (StickerData *sticker = document->sticker()) {
+					if (sticker->set.type() != mtpc_inputStickerSetEmpty && App::main()) {
+						App::main()->stickersBox(sticker->set);
+					}
+				}
+			}
+		}
+	}
+
+private:
+	const HistoryItem *_item;
+
+};
+
+} // namespace
+
 HistorySticker::HistorySticker(DocumentData *document) : HistoryMedia()
 , _pixw(1)
 , _pixh(1)
@@ -5150,6 +5177,9 @@ HistorySticker::HistorySticker(DocumentData *document) : HistoryMedia()
 }
 
 void HistorySticker::initDimensions(const HistoryItem *parent) {
+	if (!_packLink && _data->sticker() && _data->sticker()->set.type() != mtpc_inputStickerSetEmpty) {
+		_packLink = ClickHandlerPtr(new StickerClickHandler(parent));
+	}
 	_pixw = _data->dimensions.width();
 	_pixh = _data->dimensions.height();
 	if (_pixw > st::maxStickerSize) {
@@ -5262,6 +5292,12 @@ void HistorySticker::getState(ClickHandlerPtr &lnk, HistoryCursorState &state, i
 			state = HistoryInDateCursorState;
 		}
 	}
+
+	int pixLeft = usex + (usew - _pixw) / 2, pixTop = (_minh - _pixh) / 2;
+	if (x >= pixLeft && x < pixLeft + _pixw && y >= pixTop && y < pixTop + _pixh) {
+		lnk = _packLink;
+		return;
+	}
 }
 
 const QString HistorySticker::inDialogsText() const {

Telegram/SourceFiles/history.h

@@ -2485,6 +2485,7 @@ public:
 private:
 
 	int16 _pixw, _pixh;
+	ClickHandlerPtr _packLink;
 	DocumentData *_data;
 	QString _emoji;
 

Telegram/SourceFiles/historywidget.cpp

@@ -1020,7 +1020,7 @@ void HistoryInner::showContextMenu(QContextMenuEvent *e, bool showFromTouch) {
 					_menu->addAction(lang(ispinned ? lng_context_unpin_msg : lng_context_pin_msg), _widget, ispinned ? SLOT(onUnpinMessage()) : SLOT(onPinMessage()));
 				}
 			}
-			if (item && !isUponSelected && !_contextMenuLnk) {
+			if (item && !isUponSelected) {
 				if (HistoryMedia *media = (msg ? msg->getMedia() : 0)) {
 					if (media->type() == MediaTypeWebPage && static_cast<HistoryWebPage*>(media)->attach()) {
 						media = static_cast<HistoryWebPage*>(media)->attach();
@@ -1032,7 +1032,7 @@ void HistoryInner::showContextMenu(QContextMenuEvent *e, bool showFromTouch) {
 						}
 
 						_menu->addAction(lang(lng_context_save_image), this, SLOT(saveContextFile()))->setEnabled(true);
-					} else if (media->type() == MediaTypeGif) {
+					} else if (media->type() == MediaTypeGif && !_contextMenuLnk) {
 						DocumentData *doc = media->getDocument();
 						if (doc) {
 							if (doc->loading()) {
@@ -7287,11 +7287,14 @@ void HistoryWidget::onFieldBarCancel() {
 }
 
 void HistoryWidget::onStickerPackInfo() {
-	if (HistoryMedia *media = (App::contextItem() ? App::contextItem()->getMedia() : 0)) {
-		if (media->type() == MediaTypeSticker) {
-			DocumentData *doc = media->getDocument();
-			if (doc && doc->sticker() && doc->sticker()->set.type() != mtpc_inputStickerSetEmpty) {
-				App::main()->stickersBox(doc->sticker()->set);
+	if (!App::contextItem()) return;
+
+	if (HistoryMedia *media = App::contextItem()->getMedia()) {
+		if (DocumentData *doc = media->getDocument()) {
+			if (StickerData *sticker = doc->sticker()) {
+				if (sticker->set.type() != mtpc_inputStickerSetEmpty) {
+					App::main()->stickersBox(sticker->set);
+				}
 			}
 		}
 	}
@@ -7300,7 +7303,7 @@ void HistoryWidget::onStickerPackInfo() {
 void HistoryWidget::previewCancel() {
 	MTP::cancel(_previewRequest);
 	_previewRequest = 0;
-	_previewData = 0;
+	_previewData = nullptr;
 	_previewLinks.clear();
 	updatePreview();
 	if (!_editMsgId && !_replyToId && !readyToForward() && !_kbReplyTo) {