Allow viewing emoji sets used in a message.

Telegram/Resources/langs/lang.strings

@@ -1821,7 +1821,10 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 "lng_stickers_count#other" = "{count} stickers";
 "lng_masks_count#one" = "{count} mask";
 "lng_masks_count#other" = "{count} masks";
+"lng_custom_emoji_count#one" = "{count} emoji";
+"lng_custom_emoji_count#other" = "{count} emoji";
 "lng_stickers_attached_sets" = "Sets of attached stickers";
+"lng_custom_emoji_used_sets" = "Sets of used emoji";
 "lng_stickers_group_set" = "Group sticker set";
 "lng_stickers_remove_group_set" = "Remove group sticker set?";
 "lng_stickers_group_from_your" = "Choose from your stickers";
@@ -2147,8 +2150,9 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 "lng_context_delete_all_files" = "Delete all files";
 "lng_context_save_custom_sound" = "Save for notifications";
 
-"lng_context_animated_emoji" = "This message contains emoji from {name} pack.";
-"lng_context_animated_emoji_many" = "This message contains emoji from {name} packs.";
+"lng_context_animated_emoji" = "This message contains emoji from **{name} pack**.";
+"lng_context_animated_emoji_many#one" = "This message contains emoji from **{count} pack**.";
+"lng_context_animated_emoji_many#other" = "This message contains emoji from **{count} packs**.";
 
 "lng_downloads_section" = "Downloads";
 "lng_downloads_view_in_chat" = "View in chat";

Telegram/SourceFiles/boxes/stickers_box.cpp

@@ -152,6 +152,7 @@ private:
 
 		bool isRecentSet() const;
 		bool isMasksSet() const;
+		bool isEmojiSet() const;
 		bool isWebm() const;
 		bool isInstalled() const;
 		bool isUnread() const;
@@ -419,32 +420,56 @@ StickersBox::StickersBox(
 , _section(Section::Attached)
 , _isMasks(false)
 , _attached(0, this, controller, Section::Attached)
+, _attachedType(Data::StickersType::Stickers)
 , _attachedSets(attachedSets) {
 }
 
+StickersBox::StickersBox(
+	QWidget*,
+	not_null<Window::SessionController*> controller,
+	const std::vector<StickerSetIdentifier> &emojiSets)
+: _controller(controller)
+, _api(&controller->session().mtp())
+, _section(Section::Attached)
+, _isMasks(false)
+, _attached(0, this, controller, Section::Attached)
+, _attachedType(Data::StickersType::Emoji)
+, _emojiSets(emojiSets) {
+}
+
 Main::Session &StickersBox::session() const {
 	return _controller->session();
 }
 
 void StickersBox::showAttachedStickers() {
+	const auto stickers = &session().data().stickers();
+
 	auto addedSet = false;
+	const auto add = [&](not_null<StickersSet*> set) {
+		if (_attached.widget()->appendSet(set)) {
+			addedSet = true;
+			if (set->stickers.isEmpty()
+				|| (set->flags & SetFlag::NotLoaded)) {
+				session().api().scheduleStickerSetRequest(
+					set->id,
+					set->accessHash);
+			}
+		}
+	};
 	for (const auto &stickerSet : _attachedSets.v) {
 		const auto setData = stickerSet.match([&](const auto &data) {
 			return data.vset().match([&](const MTPDstickerSet &data) {
 				return &data;
 			});
 		});
-
-		if (const auto set = session().data().stickers().feedSet(*setData)) {
-			if (_attached.widget()->appendSet(set)) {
-				addedSet = true;
-				if (set->stickers.isEmpty()
-					|| (set->flags & SetFlag::NotLoaded)) {
-					session().api().scheduleStickerSetRequest(
-						set->id,
-						set->accessHash);
-				}
-			}
+		if (const auto set = stickers->feedSet(*setData)) {
+			add(set);
+		}
+	}
+	for (const auto &setId : _emojiSets) {
+		const auto i = stickers->sets().find(setId.id);
+		if (i != end(stickers->sets())) {
+			add(i->second.get());
 		}
 	}
 	if (addedSet) {
@@ -547,7 +572,9 @@ void StickersBox::prepare() {
 	} else if (_section == Section::Archived) {
 		requestArchivedSets();
 	} else if (_section == Section::Attached) {
-		setTitle(tr::lng_stickers_attached_sets());
+		setTitle(_attachedType == Data::StickersType::Emoji
+			? tr::lng_custom_emoji_used_sets()
+			: tr::lng_stickers_attached_sets());
 	}
 	if (_tabs) {
 		if (archivedSetsOrder().isEmpty()) {
@@ -1063,6 +1090,10 @@ bool StickersBox::Inner::Row::isMasksSet() const {
 	return (set->flags & SetFlag::Masks);
 }
 
+bool StickersBox::Inner::Row::isEmojiSet() const {
+	return (set->flags & SetFlag::Emoji);
+}
+
 bool StickersBox::Inner::Row::isWebm() const {
 	return (set->flags & SetFlag::Webm);
 }
@@ -1331,6 +1362,8 @@ void StickersBox::Inner::paintRow(Painter &p, not_null<Row*> row, int index) {
 
 	const auto statusText = (row->count == 0)
 		? tr::lng_contacts_loading(tr::now)
+		: row->isEmojiSet()
+		? tr::lng_custom_emoji_count(tr::now, lt_count, row->count)
 		: row->isMasksSet()
 		? tr::lng_masks_count(tr::now, lt_count, row->count)
 		: tr::lng_stickers_count(tr::now, lt_count, row->count);

Telegram/SourceFiles/boxes/stickers_box.h

@@ -37,6 +37,7 @@ class Session;
 
 namespace Data {
 class DocumentMedia;
+enum class StickersType : uchar;
 } // namespace Data
 
 namespace Lottie {
@@ -70,6 +71,10 @@ public:
 		QWidget*,
 		not_null<Window::SessionController*> controller,
 		const MTPVector<MTPStickerSetCovered> &attachedSets);
+	StickersBox(
+		QWidget*,
+		not_null<Window::SessionController*> controller,
+		const std::vector<StickerSetIdentifier> &emojiSets);
 	~StickersBox();
 
 	[[nodiscard]] Main::Session &session() const;
@@ -157,7 +162,9 @@ private:
 	Tab _attached;
 	Tab *_tab = nullptr;
 
+	const Data::StickersType _attachedType = {};
 	const MTPVector<MTPStickerSetCovered> _attachedSets;
+	const std::vector<StickerSetIdentifier> _emojiSets;
 
 	ChannelData *_megagroupSet = nullptr;
 

Telegram/SourceFiles/data/stickers/data_custom_emoji.cpp

@@ -415,6 +415,12 @@ std::unique_ptr<Ui::CustomEmoji::Loader> CustomEmojiManager::createLoader(
 	return result;
 }
 
+QString CustomEmojiManager::lookupSetName(uint64 setId) {
+	const auto &sets = _owner->stickers().sets();
+	const auto i = sets.find(setId);
+	return (i != end(sets)) ? i->second->title : QString();
+}
+
 void CustomEmojiManager::request() {
 	auto ids = QVector<MTPlong>();
 	ids.reserve(std::min(kMaxPerRequest, int(_pendingForRequest.size())));
@@ -440,6 +446,7 @@ void CustomEmojiManager::request() {
 					}
 				}
 			}
+			requestSetFor(document);
 		}
 		requestFinished();
 	}).fail([=] {
@@ -448,6 +455,30 @@ void CustomEmojiManager::request() {
 	}).send();
 }
 
+void CustomEmojiManager::requestSetFor(not_null<DocumentData*> document) {
+	const auto sticker = document->sticker();
+	if (!sticker || !sticker->set.id) {
+		return;
+	}
+	const auto &sets = document->owner().stickers().sets();
+	const auto i = sets.find(sticker->set.id);
+	if (i != end(sets)) {
+		return;
+	}
+	const auto session = &document->session();
+	session->api().scheduleStickerSetRequest(
+		sticker->set.id,
+		sticker->set.accessHash);
+	if (_requestSetsScheduled) {
+		return;
+	}
+	_requestSetsScheduled = true;
+	crl::on_main(this, [=] {
+		_requestSetsScheduled = false;
+		session->api().requestStickerSets();
+	});
+}
+
 void CustomEmojiManager::requestFinished() {
 	_requestId = 0;
 	if (!_pendingForRequest.empty()) {

Telegram/SourceFiles/data/stickers/data_custom_emoji.h

@@ -49,6 +49,8 @@ public:
 		DocumentId documentId,
 		SizeTag tag);
 
+	[[nodiscard]] QString lookupSetName(uint64 setId);
+
 	[[nodiscard]] Main::Session &session() const;
 	[[nodiscard]] Session &owner() const;
 
@@ -65,6 +67,7 @@ private:
 		Ui::CustomEmoji::RepaintRequest request);
 	void scheduleRepaintTimer();
 	void invokeRepaints();
+	void requestSetFor(not_null<DocumentData*> document);
 
 	const not_null<Session*> _owner;
 
@@ -81,6 +84,7 @@ private:
 	crl::time _repaintNext = 0;
 	base::Timer _repaintTimer;
 	bool _repaintTimerScheduled = false;
+	bool _requestSetsScheduled = false;
 
 };
 

Telegram/SourceFiles/data/stickers/data_stickers.cpp

@@ -1410,13 +1410,18 @@ StickersSet *Stickers::feedSetFull(const MTPDmessages_stickerSet &d) {
 		}
 	}
 
+	const auto isEmoji = !!(set->flags & SetFlag::Emoji);
 	const auto isMasks = !!(set->flags & SetFlag::Masks);
 	if (pack.isEmpty()) {
-		const auto removeIndex = (isMasks
+		const auto removeIndex = (isEmoji
+			? emojiSetsOrder()
+			: isMasks
 			? maskSetsOrder()
 			: setsOrder()).indexOf(set->id);
 		if (removeIndex >= 0) {
-			(isMasks
+			(isEmoji
+				? emojiSetsOrderRef()
+				: isMasks
 				? maskSetsOrderRef()
 				: setsOrderRef()).removeAt(removeIndex);
 		}
@@ -1453,10 +1458,12 @@ StickersSet *Stickers::feedSetFull(const MTPDmessages_stickerSet &d) {
 
 	if (set) {
 		const auto isArchived = !!(set->flags & SetFlag::Archived);
-		if (isMasks) {
-			session().local().writeInstalledMasks();
-		} else if (set->flags & SetFlag::Installed) {
-			if (!isArchived) {
+		if ((set->flags & SetFlag::Installed) && !isArchived) {
+			if (isEmoji) {
+				session().local().writeInstalledCustomEmoji();
+			} else if (isMasks) {
+				session().local().writeInstalledMasks();
+			} else {
 				session().local().writeInstalledStickers();
 			}
 		}
@@ -1464,7 +1471,9 @@ StickersSet *Stickers::feedSetFull(const MTPDmessages_stickerSet &d) {
 			session().local().writeFeaturedStickers();
 		}
 		if (wasArchived != isArchived) {
-			if (isMasks) {
+			if (isEmoji) {
+
+			} else if (isMasks) {
 				session().local().writeArchivedMasks();
 			} else {
 				session().local().writeArchivedStickers();

Telegram/SourceFiles/history/history_inner_widget.cpp

@@ -2412,6 +2412,16 @@ void HistoryInner::showContextMenu(QContextMenuEvent *e, bool showFromTouch) {
 		}
 	}
 
+	auto emojiPackIds = _dragStateItem
+		? HistoryView::CollectEmojiPacks(_dragStateItem)
+		: std::vector<StickerSetIdentifier>();
+	if (!emojiPackIds.empty()) {
+		HistoryView::AddEmojiPacksAction(
+			_menu,
+			this,
+			std::move(emojiPackIds),
+			_controller);
+	}
 	if (hasWhoReactedItem) {
 		HistoryView::AddWhoReactedAction(
 			_menu,

Telegram/SourceFiles/history/view/history_view_context_menu.cpp

@@ -26,8 +26,10 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "history/view/media/history_view_web_page.h"
 #include "history/view/reactions/message_reactions_list.h"
 #include "ui/widgets/popup_menu.h"
+#include "ui/widgets/menu/menu_item_base.h"
 #include "ui/image/image.h"
 #include "ui/toast/toast.h"
+#include "ui/text/text_utilities.h"
 #include "ui/controls/delete_message_context_action.h"
 #include "ui/controls/who_reacted_context_action.h"
 #include "ui/boxes/report_box.h"
@@ -37,6 +39,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "boxes/delete_messages_box.h"
 #include "boxes/report_messages_box.h"
 #include "boxes/sticker_set_box.h"
+#include "boxes/stickers_box.h"
 #include "data/data_photo.h"
 #include "data/data_photo_media.h"
 #include "data/data_document.h"
@@ -48,6 +51,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "data/data_file_origin.h"
 #include "data/data_scheduled_messages.h"
 #include "data/data_message_reactions.h"
+#include "data/stickers/data_custom_emoji.h"
 #include "core/file_utilities.h"
 #include "core/click_handler_types.h"
 #include "base/platform/base_platform_info.h"
@@ -1210,4 +1214,121 @@ void ShowWhoReactedMenu(
 	}, lifetime);
 }
 
+std::vector<StickerSetIdentifier> CollectEmojiPacks(
+		not_null<HistoryItem*> item) {
+	auto result = std::vector<StickerSetIdentifier>();
+	const auto owner = &item->history()->owner();
+	for (const auto &entity : item->originalText().entities) {
+		if (entity.type() == EntityType::CustomEmoji) {
+			const auto data = Data::ParseCustomEmojiData(entity.data());
+			if (const auto set = owner->document(data.id)->sticker()) {
+				if (set->set.id
+					&& !ranges::contains(
+						result,
+						set->set.id,
+						&StickerSetIdentifier::id)) {
+					result.push_back(set->set);
+				}
+			}
+		}
+	}
+	return result;
+}
+
+void AddEmojiPacksAction(
+		not_null<Ui::PopupMenu*> menu,
+		not_null<QWidget*> context,
+		std::vector<StickerSetIdentifier> packIds,
+		not_null<Window::SessionController*> controller) {
+	class Item final : public Ui::Menu::ItemBase {
+	public:
+		Item(
+			not_null<RpWidget*> parent,
+			const style::Menu &st,
+			TextWithEntities &&about)
+		: Ui::Menu::ItemBase(parent, st)
+		, _st(st)
+		, _text(base::make_unique_q<Ui::FlatLabel>(
+			this,
+			rpl::single(std::move(about)),
+			st::historyHasCustomEmoji))
+		, _dummyAction(new QAction(parent)) {
+			enableMouseSelecting();
+			_text->setAttribute(Qt::WA_TransparentForMouseEvents);
+			parent->widthValue() | rpl::start_with_next([=](int width) {
+				const auto top = st::historyHasCustomEmojiPosition.y();
+				const auto skip = st::historyHasCustomEmojiPosition.x();
+				_text->resizeToWidth(width - 2 * skip);
+				_text->moveToLeft(skip, top);
+				resize(width, contentHeight());
+			}, lifetime());
+		}
+
+		not_null<QAction*> action() const override {
+			return _dummyAction;
+		}
+
+		bool isEnabled() const override {
+			return true;
+		}
+
+	private:
+		int contentHeight() const override {
+			const auto skip = st::historyHasCustomEmojiPosition.y();
+			return skip + _text->height() + skip;
+		}
+
+		void paintEvent(QPaintEvent *e) override {
+			auto p = QPainter(this);
+			const auto selected = isSelected();
+			p.fillRect(rect(), selected ? _st.itemBgOver : _st.itemBg);
+			RippleButton::paintRipple(p, 0, 0);
+		}
+
+		const style::Menu &_st;
+		const base::unique_qptr<Ui::FlatLabel> _text;
+		const not_null<QAction*> _dummyAction;
+
+	};
+
+	const auto count = int(packIds.size());
+	const auto manager = &controller->session().data().customEmojiManager();
+	const auto name = (count == 1)
+		? TextWithEntities{ manager->lookupSetName(packIds[0].id) }
+		: TextWithEntities();
+	if (!menu->empty()) {
+		menu->addSeparator();
+	}
+	auto button = base::make_unique_q<Item>(
+		menu,
+		menu->st().menu,
+		(name.text.isEmpty()
+			? tr::lng_context_animated_emoji_many(
+				tr::now,
+				lt_count,
+				count,
+				Ui::Text::RichLangValue)
+			: tr::lng_context_animated_emoji(
+				tr::now,
+				lt_name,
+				TextWithEntities{ name },
+				Ui::Text::RichLangValue)));
+	const auto weak = base::make_weak(controller.get());
+	button->setClickedCallback([=] {
+		const auto strong = weak.get();
+		if (!strong) {
+			return;
+		} else if (packIds.size() > 1) {
+			strong->show(Box<StickersBox>(strong, packIds));
+			return;
+		}
+		// Single used emoji pack.
+		strong->show(
+			Box<StickerSetBox>(strong, packIds.front()),
+			Ui::LayerOption::KeepOther);
+
+	});
+	menu->addAction(std::move(button));
+}
+
 } // namespace HistoryView

Telegram/SourceFiles/history/view/history_view_context_menu.h

@@ -79,4 +79,12 @@ void ShowWhoReactedMenu(
 	not_null<Window::SessionController*> controller,
 	rpl::lifetime &lifetime);
 
+[[nodiscard]] std::vector<StickerSetIdentifier> CollectEmojiPacks(
+	not_null<HistoryItem*> item);
+void AddEmojiPacksAction(
+	not_null<Ui::PopupMenu*> menu,
+	not_null<QWidget*> context,
+	std::vector<StickerSetIdentifier> packIds,
+	not_null<Window::SessionController*> controller);
+
 } // namespace HistoryView

Telegram/SourceFiles/storage/storage_account.cpp

@@ -2128,7 +2128,14 @@ void Account::writeInstalledCustomEmoji() {
 	using SetFlag = Data::StickersSetFlag;
 
 	writeStickerSets(_installedCustomEmojiKey, [](const Data::StickersSet &set) {
-		if (!(set.flags & SetFlag::Emoji) || set.stickers.isEmpty()) {
+		if (!(set.flags & SetFlag::Emoji)) {
+			return StickerSetCheckResult::Skip;
+		} else if (set.flags & SetFlag::NotLoaded) {
+			// waiting to receive
+			return StickerSetCheckResult::Abort;
+		} else if (!(set.flags & SetFlag::Installed)
+			|| (set.flags & SetFlag::Archived)
+			|| set.stickers.isEmpty()) {
 			return StickerSetCheckResult::Skip;
 		}
 		return StickerSetCheckResult::Write;

Telegram/SourceFiles/ui/chat/chat.style

@@ -1087,3 +1087,13 @@ msgServiceGiftBoxButtonPadding: margins(0px, 17px, 0px, 17px);
 msgServiceGiftBoxTitlePadding: margins(0px, 126px, 0px, 2px);
 msgServiceGiftBoxStickerTop: -30px;
 msgServiceGiftBoxStickerSize: size(150px, 150px);
+
+historyHasCustomEmoji: FlatLabel(defaultFlatLabel) {
+	style: TextStyle(defaultTextStyle) {
+		font: font(12px);
+		linkFont: font(12px underline);
+		linkFontOver: font(12px underline);
+	}
+	minWidth: 80px;
+}
+historyHasCustomEmojiPosition: point(12px, 4px);