Implement a nice corner reaction button.

Telegram/SourceFiles/core/click_handler_types.h

@@ -10,7 +10,6 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "ui/basic_click_handlers.h"
 
 constexpr auto kPeerLinkPeerIdProperty = 0x01;
-constexpr auto kReactionIdProperty = 0x02;
 
 namespace Main {
 class Session;

Telegram/SourceFiles/history/admin_log/history_admin_log_inner.cpp

@@ -673,11 +673,6 @@ void InnerWidget::elementStartInteraction(not_null<const Element*> view) {
 void InnerWidget::elementShowReactions(not_null<const Element*> view) {
 }
 
-const Data::Reaction *InnerWidget::elementCornerReaction(
-		not_null<const Element*> view) {
-	return nullptr;
-}
-
 void InnerWidget::saveState(not_null<SectionMemento*> memento) {
 	memento->setFilter(std::move(_filter));
 	memento->setAdmins(std::move(_admins));

Telegram/SourceFiles/history/admin_log/history_admin_log_inner.h

@@ -141,8 +141,6 @@ public:
 		not_null<const HistoryView::Element*> view) override;
 	void elementShowReactions(
 		not_null<const HistoryView::Element*> view) override;
-	const Data::Reaction *elementCornerReaction(
-		not_null<const HistoryView::Element*> view) override;
 
 	~InnerWidget();
 

Telegram/SourceFiles/history/history_inner_widget.cpp

@@ -177,8 +177,10 @@ HistoryInner::HistoryInner(
 	HistoryView::MakePathShiftGradient(
 		controller->chatStyle(),
 		[=] { update(); }))
-, _reactionsMenus(
-	std::make_unique<HistoryView::ReactionsMenuManager>(historyWidget))
+, _reactionsManager(
+	std::make_unique<HistoryView::Reactions::Manager>(
+		historyWidget,
+		[=](QRect updated) { update(updated); }))
 , _touchSelectTimer([=] { onTouchSelect(); })
 , _touchScrollTimer([=] { onTouchScrollTimer(); })
 , _scrollDateCheck([this] { scrollDateCheck(); })
@@ -225,8 +227,8 @@ HistoryInner::HistoryInner(
 		_controller->emojiInteractions().playStarted(_peer, std::move(emoji));
 	}, lifetime());
 
-	using ChosenReaction = HistoryView::ReactionsMenuManager::Chosen;
-	_reactionsMenus->chosen(
+	using ChosenReaction = HistoryView::Reactions::Manager::Chosen;
+	_reactionsManager->chosen(
 	) | rpl::start_with_next([=](ChosenReaction reaction) {
 		if (const auto item = session().data().message(reaction.context)) {
 			item->addReaction(reaction.emoji);
@@ -283,7 +285,7 @@ HistoryInner::HistoryInner(
 			Data::PeerUpdate::Flag::Reactions)
 	) | rpl::start_with_next([=] {
 		_reactions = session().data().reactions().list(_peer);
-		repaintItem(App::mousedItem());
+		_reactionsManager->applyList(_reactions);
 	}, lifetime());
 
 	controller->adaptive().chatWideValue(
@@ -799,8 +801,8 @@ void HistoryInner::paintEvent(QPaintEvent *e) {
 				view = block->messages[iItem].get();
 				item = view->data();
 			}
-			p.translate(0, -top);
 			context.translate(0, top);
+			p.translate(0, -top);
 		}
 		if (htop >= 0) {
 			auto iBlock = (_curHistory == _history ? _curBlock : 0);
@@ -863,6 +865,7 @@ void HistoryInner::paintEvent(QPaintEvent *e) {
 				view = block->messages[iItem].get();
 				item = view->data();
 			}
+			context.translate(0, top);
 			p.translate(0, -top);
 
 			if (readTill && _widget->doWeReadServerHistory()) {
@@ -959,6 +962,9 @@ void HistoryInner::paintEvent(QPaintEvent *e) {
 				return true;
 			});
 			p.setOpacity(1.);
+
+			_reactionsManager->paintButtons(p, context);
+
 			p.translate(0, _historyPaddingTop);
 			_emojiInteractions->paint(p);
 		}
@@ -1533,7 +1539,7 @@ void HistoryInner::mouseActionFinish(
 				.sessionWindow = base::make_weak(_controller.get()),
 			})
 		});
-		_reactionsMenus->hideAll(anim::type::normal);
+		_reactionsManager->hideSelectors(anim::type::normal);
 		return;
 	}
 	if ((_mouseAction == MouseAction::PrepareSelect)
@@ -1719,21 +1725,6 @@ void HistoryInner::showContextMenu(QContextMenuEvent *e, bool showFromTouch) {
 			return;
 		}
 		const auto itemId = item->fullId();
-		if (item->canReact()) {
-			auto reactionMenu = std::make_unique<Ui::PopupMenu>(
-				this,
-				st::reactionMenu);
-			auto &reactions = item->history()->owner().reactions();
-			const auto &list = reactions.list(item->history()->peer);
-			if (!list.empty()) {
-				for (const auto &entry : list) {
-					reactionMenu->addAction(entry.emoji, [=] {
-						item->addReaction(entry.emoji);
-					});
-				}
-				_menu->addAction("Reaction", std::move(reactionMenu), &st::menuIconReactions);
-			}
-		}
 		if (canSendMessages) {
 			_menu->addAction(tr::lng_context_reply_msg(tr::now), [=] {
 				_widget->replyToMessage(itemId);
@@ -2149,19 +2140,6 @@ void HistoryInner::copySelectedText() {
 	}
 }
 
-void HistoryInner::showReactionsMenu(FullMsgId itemId, QRect area) {
-	const auto top = itemTop(session().data().message(itemId));
-	if (top < 0) {
-		area = QRect(); // Just hide.
-	}
-	const auto skip = st::reactionCornerOut.y();
-	area = area.marginsRemoved({ 0, skip, 0, skip });
-	_reactionsMenus->showReactionsMenu(
-		itemId,
-		{ mapToGlobal(area.translated(0, top).topLeft()), area.size() },
-		_reactions);
-}
-
 void HistoryInner::savePhotoToFile(not_null<PhotoData*> photo) {
 	const auto media = photo->activeMediaView();
 	if (photo->isNull() || !media || !media->loaded()) {
@@ -2696,6 +2674,7 @@ void HistoryInner::enterEventHook(QEnterEvent *e) {
 }
 
 void HistoryInner::leaveEventHook(QEvent *e) {
+	_reactionsManager->showButton({});
 	if (auto item = App::hoveredItem()) {
 		repaintItem(item);
 		App::hoveredItem(nullptr);
@@ -2807,13 +2786,13 @@ bool HistoryInner::canCopySelected() const {
 }
 
 bool HistoryInner::canDeleteSelected() const {
-	auto selectedState = getSelectionState();
-	return (selectedState.count > 0) && (selectedState.count == selectedState.canDeleteCount);
+	const auto selectedState = getSelectionState();
+	return (selectedState.count > 0)
+		&& (selectedState.count == selectedState.canDeleteCount);
 }
 
 bool HistoryInner::inSelectionMode() const {
-	if (!_selected.empty()
-		&& (_selected.begin()->second == FullSelection)) {
+	if (hasSelectedItems()) {
 		return true;
 	} else if (_mouseAction == MouseAction::Selecting
 		&& _dragSelFrom
@@ -2921,13 +2900,6 @@ void HistoryInner::elementShowReactions(not_null<const Element*> view) {
 		view->data()));
 }
 
-const Data::Reaction *HistoryInner::elementCornerReaction(
-		not_null<const Element*> view) {
-	return (view == App::mousedItem() && !_reactions.empty())
-		? &_reactions.front()
-		: nullptr;
-}
-
 auto HistoryInner::getSelectionState() const
 -> HistoryView::TopBarWidget::SelectedState {
 	auto result = HistoryView::TopBarWidget::SelectedState {};
@@ -2955,10 +2927,14 @@ void HistoryInner::clearSelected(bool onlyTextSelection) {
 	}
 }
 
+bool HistoryInner::hasSelectedItems() const {
+	return !_selected.empty() && _selected.cbegin()->second == FullSelection;
+}
+
 MessageIdsList HistoryInner::getSelectedItems() const {
 	using namespace ranges;
 
-	if (_selected.empty() || _selected.cbegin()->second != FullSelection) {
+	if (!hasSelectedItems()) {
 		return {};
 	}
 
@@ -2985,6 +2961,21 @@ void HistoryInner::onTouchSelect() {
 	mouseActionStart(_touchPos, Qt::LeftButton);
 }
 
+auto HistoryInner::reactionButtonParameters(
+	not_null<const Element*> view,
+	QPoint position) const
+-> HistoryView::Reactions::ButtonParameters {
+	const auto top = itemTop(view);
+	if (top < 0
+		|| !view->data()->canReact()
+		|| _mouseAction == MouseAction::Dragging
+		|| inSelectionMode()) {
+		return {};
+	}
+	const auto local = view->reactionButtonParameters(position);
+	return local.translated({ 0, itemTop(view) });
+}
+
 void HistoryInner::mouseActionUpdate() {
 	if (hasPendingResizedItems()) {
 		return;
@@ -3015,6 +3006,7 @@ void HistoryInner::mouseActionUpdate() {
 			}
 		}
 		m = mapPointToItem(point, view);
+		_reactionsManager->showButton(reactionButtonParameters(view, m));
 		if (view->pointState(m) != PointState::Outside) {
 			if (App::hoveredItem() != view) {
 				repaintItem(App::hoveredItem());
@@ -3025,6 +3017,8 @@ void HistoryInner::mouseActionUpdate() {
 			repaintItem(App::hoveredItem());
 			App::hoveredItem(nullptr);
 		}
+	} else {
+		_reactionsManager->showButton({});
 	}
 	if (_mouseActionItem && !_mouseActionItem->mainView()) {
 		mouseActionCancel();
@@ -3148,7 +3142,6 @@ void HistoryInner::mouseActionUpdate() {
 		|| dragState.customTooltip) {
 		Ui::Tooltip::Show(1000, this);
 	}
-	showReactionsMenu(dragState.itemId, dragState.reactionArea);
 
 	Qt::CursorShape cur = style::cur_default;
 	if (_mouseAction == MouseAction::None) {
@@ -3852,12 +3845,6 @@ not_null<HistoryView::ElementDelegate*> HistoryInner::ElementDelegate() {
 				Instance->elementShowReactions(view);
 			}
 		}
-		const Data::Reaction *elementCornerReaction(
-				not_null<const Element*> view) override {
-			Expects(Instance != nullptr);
-
-			return Instance->elementCornerReaction(view);
-		}
 
 	};
 

Telegram/SourceFiles/history/history_inner_widget.h

@@ -29,9 +29,13 @@ enum class CursorState : char;
 enum class PointState : char;
 class EmptyPainter;
 class Element;
-class ReactionsMenuManager;
 } // namespace HistoryView
 
+namespace HistoryView::Reactions {
+class Manager;
+struct ButtonParameters;
+} // namespace HistoryView::Reactions
+
 namespace Window {
 class SessionController;
 } // namespace Window
@@ -69,7 +73,7 @@ public:
 	void messagesReceived(PeerData *peer, const QVector<MTPMessage> &messages);
 	void messagesReceivedDown(PeerData *peer, const QVector<MTPMessage> &messages);
 
-	TextForMimeData getSelectedText() const;
+	[[nodiscard]] TextForMimeData getSelectedText() const;
 
 	void touchScrollUpdated(const QPoint &screenPos);
 
@@ -82,14 +86,16 @@ public:
 	void repaintItem(const HistoryItem *item);
 	void repaintItem(const Element *view);
 
-	bool canCopySelected() const;
-	bool canDeleteSelected() const;
+	[[nodiscard]] bool canCopySelected() const;
+	[[nodiscard]] bool canDeleteSelected() const;
 
-	HistoryView::TopBarWidget::SelectedState getSelectionState() const;
+	[[nodiscard]] auto getSelectionState() const
+		-> HistoryView::TopBarWidget::SelectedState;
 	void clearSelected(bool onlyTextSelection = false);
-	MessageIdsList getSelectedItems() const;
-	bool inSelectionMode() const;
-	bool elementIntersectsRange(
+	[[nodiscard]] MessageIdsList getSelectedItems() const;
+	[[nodiscard]] bool hasSelectedItems() const;
+	[[nodiscard]] bool inSelectionMode() const;
+	[[nodiscard]] bool elementIntersectsRange(
 		not_null<const Element*> view,
 		int from,
 		int till) const;
@@ -120,7 +126,6 @@ public:
 	void elementReplyTo(const FullMsgId &to);
 	void elementStartInteraction(not_null<const Element*> view);
 	void elementShowReactions(not_null<const Element*> view);
-	const Data::Reaction *elementCornerReaction(not_null<const Element*> view);
 
 	void updateBotInfo(bool recount = true);
 
@@ -343,7 +348,10 @@ private:
 	void blockSenderItem(FullMsgId itemId);
 	void blockSenderAsGroup(FullMsgId itemId);
 	void copySelectedText();
-	void showReactionsMenu(FullMsgId itemId, QRect area);
+
+	HistoryView::Reactions::ButtonParameters reactionButtonParameters(
+		not_null<const Element*> view,
+		QPoint position) const;
 
 	void setupSharingDisallowed();
 	[[nodiscard]] bool hasCopyRestriction(HistoryItem *item = nullptr) const;
@@ -398,7 +406,7 @@ private:
 		std::shared_ptr<Data::CloudImageView>> _userpics, _userpicsCache;
 
 	std::vector<Data::Reaction> _reactions;
-	std::unique_ptr<HistoryView::ReactionsMenuManager> _reactionsMenus;
+	std::unique_ptr<HistoryView::Reactions::Manager> _reactionsManager;
 
 	MouseAction _mouseAction = MouseAction::None;
 	TextSelectType _mouseSelectType = TextSelectType::Letters;

Telegram/SourceFiles/history/view/history_view_cursor_state.h

@@ -53,7 +53,6 @@ struct TextState {
 	bool customTooltip = false;
 	uint16 symbol = 0;
 	QString customTooltipText;
-	QRect reactionArea;
 
 };
 

Telegram/SourceFiles/history/view/history_view_element.cpp

@@ -15,6 +15,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "history/view/media/history_view_media_grouped.h"
 #include "history/view/media/history_view_sticker.h"
 #include "history/view/media/history_view_large_emoji.h"
+#include "history/view/history_view_reactions.h"
 #include "history/view/history_view_cursor_state.h"
 #include "history/history.h"
 #include "base/unixtime.h"
@@ -188,11 +189,6 @@ void SimpleElementDelegate::elementShowReactions(
 	not_null<const Element*> view) {
 }
 
-const Data::Reaction *SimpleElementDelegate::elementCornerReaction(
-		not_null<const Element*> view) {
-	return nullptr;
-}
-
 TextSelection UnshiftItemSelection(
 		TextSelection selection,
 		uint16 byLength) {
@@ -979,6 +975,11 @@ TextSelection Element::adjustSelection(
 	return selection;
 }
 
+Reactions::ButtonParameters Element::reactionButtonParameters(
+		QPoint position) const {
+	return {};
+}
+
 void Element::clickHandlerActiveChanged(
 		const ClickHandlerPtr &handler,
 		bool active) {

Telegram/SourceFiles/history/view/history_view_element.h

@@ -43,6 +43,10 @@ class Media;
 
 using PaintContext = Ui::ChatPaintContext;
 
+namespace Reactions {
+struct ButtonParameters;
+} // namespace Reactions
+
 enum class Context : char {
 	History,
 	Replies,
@@ -96,8 +100,6 @@ public:
 	virtual void elementReplyTo(const FullMsgId &to) = 0;
 	virtual void elementStartInteraction(not_null<const Element*> view) = 0;
 	virtual void elementShowReactions(not_null<const Element*> view) = 0;
-	virtual const Data::Reaction *elementCornerReaction(
-		not_null<const Element*> view) = 0;
 
 	virtual ~ElementDelegate() {
 	}
@@ -156,8 +158,6 @@ public:
 	void elementReplyTo(const FullMsgId &to) override;
 	void elementStartInteraction(not_null<const Element*> view) override;
 	void elementShowReactions(not_null<const Element*> view) override;
-	const Data::Reaction *elementCornerReaction(
-		not_null<const Element*> view) override;
 
 protected:
 	[[nodiscard]] not_null<Window::SessionController*> controller() const {
@@ -319,6 +319,9 @@ public:
 		TextSelection selection,
 		TextSelectType type) const;
 
+	[[nodiscard]] virtual auto reactionButtonParameters(
+		QPoint position) const -> Reactions::ButtonParameters;
+
 	// ClickHandlerHost interface.
 	void clickHandlerActiveChanged(
 		const ClickHandlerPtr &handler,

Telegram/SourceFiles/history/view/history_view_list_widget.cpp

@@ -1461,11 +1461,6 @@ void ListWidget::elementStartInteraction(not_null<const Element*> view) {
 void ListWidget::elementShowReactions(not_null<const Element*> view) {
 }
 
-const Data::Reaction *ListWidget::elementCornerReaction(
-		not_null<const Element*> view) {
-	return nullptr; // #TODO reactions
-}
-
 void ListWidget::saveState(not_null<ListMemento*> memento) {
 	memento->setAroundPosition(_aroundPosition);
 	auto state = countScrollState();

Telegram/SourceFiles/history/view/history_view_list_widget.h

@@ -279,8 +279,6 @@ public:
 	void elementReplyTo(const FullMsgId &to) override;
 	void elementStartInteraction(not_null<const Element*> view) override;
 	void elementShowReactions(not_null<const Element*> view) override;
-	const Data::Reaction *elementCornerReaction(
-		not_null<const Element*> view) override;
 
 	void setEmptyInfoWidget(base::unique_qptr<Ui::RpWidget> &&w);
 

Telegram/SourceFiles/history/view/history_view_message.cpp

@@ -605,28 +605,6 @@ void Message::draw(Painter &p, const PaintContext &context) const {
 		p.translate(-reactionsPosition);
 	}
 
-	if (const auto reaction = delegate()->elementCornerReaction(this)) {
-		if (!_react) {
-			_react = std::make_unique<ReactButton>([=] {
-				history()->owner().requestViewRepaint(this);
-			}, [=] {
-				if (const auto reaction
-					= delegate()->elementCornerReaction(this)) {
-					data()->addReaction(reaction->emoji);
-				}
-			}, g);
-			_react->toggle(true);
-		} else {
-			_react->updateGeometry(g);
-		}
-		_react->show(reaction);
-	} else if (_react) {
-		_react->toggle(false);
-		if (_react->isHidden()) {
-			_react = nullptr;
-		}
-	}
-
 	if (bubble) {
 		if (displayFromName()
 			&& item->displayFrom()
@@ -767,10 +745,6 @@ void Message::draw(Painter &p, const PaintContext &context) const {
 			drawRightAction(p, context, fastShareLeft, fastShareTop, width());
 		}
 
-		if (_react) {
-			_react->paint(p, context);
-		}
-
 		if (media) {
 			media->paintBubbleFireworks(p, g, context.now);
 		}
@@ -1097,12 +1071,6 @@ PointState Message::pointState(QPoint point) const {
 		return PointState::Outside;
 	}
 
-	if (_react) {
-		if (const auto state = _react->pointState(point)) {
-			return *state;
-		}
-	}
-
 	const auto media = this->media();
 	const auto item = message();
 	const auto reactionsInBubble = _reactions && needInfoDisplay();
@@ -1279,14 +1247,6 @@ TextState Message::textState(
 		return result;
 	}
 
-	if (_react) {
-		if (const auto state = _react->textState(point, request)) {
-			result.link = state->link;
-			result.reactionArea = state->reactionArea;
-			return result;
-		}
-	}
-
 	const auto reactionsInBubble = _reactions && needInfoDisplay();
 	auto keyboard = item->inlineReplyKeyboard();
 	auto keyboardHeight = 0;
@@ -1828,6 +1788,28 @@ TextSelection Message::adjustSelection(
 	return result;
 }
 
+Reactions::ButtonParameters Message::reactionButtonParameters(
+		QPoint position) const {
+	const auto top = marginTop();
+	if (!QRect(0, top, width(), height() - top).contains(position)) {
+		return {};
+	}
+	auto result = Reactions::ButtonParameters{ .context = data()->fullId() };
+	result.outbg = hasOutLayout();
+	const auto geometry = countGeometry();
+	result.center = geometry.topLeft()
+		+ QPoint(geometry.width(), geometry.height())
+		+ st::reactionCornerCenter;
+	const auto size = st::reactionCornerSize;
+	const auto button = QRect(
+		result.center - QPoint(size.width() / 2, size.height() / 2),
+		size);
+	result.active = button.marginsAdded(
+		st::reactionCornerActiveAreaPadding
+	).contains(position);
+	return result;
+}
+
 void Message::drawInfo(
 		Painter &p,
 		const PaintContext &context,
@@ -1932,11 +1914,14 @@ void Message::refreshReactions() {
 	const auto &list = item->reactions();
 	if (list.empty() || embedReactionsInBottomInfo()) {
 		_reactions = nullptr;
-	} else if (!_reactions) {
-		_reactions = std::make_unique<Reactions>(
-			ReactionsDataFromMessage(this));
+		return;
+	}
+	using namespace Reactions;
+	auto data = InlineListDataFromMessage(this);
+	if (!_reactions) {
+		_reactions = std::make_unique<InlineList>(std::move(data));
 	} else {
-		_reactions->update(ReactionsDataFromMessage(this), width());
+		_reactions->update(std::move(data), width());
 	}
 }
 
@@ -1964,11 +1949,9 @@ void Message::itemDataChanged() {
 auto Message::verticalRepaintRange() const -> VerticalRepaintRange {
 	const auto media = this->media();
 	const auto add = media ? media->bubbleRollRepaintMargins() : QMargins();
-	const auto addBottom = add.bottom()
-		+ (_react ? std::max(_react->bottomOutsideMargin(height()), 0) : 0);
 	return {
 		.top = -add.top(),
-		.height = height() + add.top() + addBottom
+		.height = height() + add.top() + add.bottom()
 	};
 }
 

Telegram/SourceFiles/history/view/history_view_message.h

@@ -19,10 +19,12 @@ struct HistoryMessageForwarded;
 namespace HistoryView {
 
 class ViewButton;
-class ReactButton;
-class Reactions;
 class WebPage;
 
+namespace Reactions {
+class InlineList;
+} // namespace Reactions
+
 // Special type of Component for the channel actions log.
 struct LogEntryOriginal
 	: public RuntimeComponent<LogEntryOriginal, Element> {
@@ -85,6 +87,9 @@ public:
 		TextSelection selection,
 		TextSelectType type) const override;
 
+	Reactions::ButtonParameters reactionButtonParameters(
+		QPoint position) const override;
+
 	bool hasHeavyPart() const override;
 	void unloadHeavyPart() override;
 
@@ -234,8 +239,7 @@ private:
 	mutable ClickHandlerPtr _rightActionLink;
 	mutable ClickHandlerPtr _fastReplyLink;
 	mutable std::unique_ptr<ViewButton> _viewButton;
-	mutable std::unique_ptr<ReactButton> _react;
-	std::unique_ptr<Reactions> _reactions;
+	std::unique_ptr<Reactions::InlineList> _reactions;
 	mutable std::unique_ptr<CommentsButton> _comments;
 
 	Ui::Text::String _rightBadge;

Telegram/SourceFiles/history/view/history_view_reactions.cpp

@@ -11,8 +11,10 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "history/view/history_view_cursor_state.h"
 #include "history/history_message.h"
 #include "ui/chat/chat_style.h"
+#include "ui/chat/message_bubble.h"
 #include "ui/text/text_options.h"
 #include "ui/text/text_utilities.h"
+#include "ui/image/image_prepare.h"
 #include "data/data_message_reactions.h"
 #include "data/data_document.h"
 #include "data/data_document_media.h"
@@ -21,20 +23,39 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "styles/style_chat.h"
 #include "styles/palette.h"
 
-namespace HistoryView {
+namespace HistoryView::Reactions {
 namespace {
 
 constexpr auto kItemsPerRow = 5;
+constexpr auto kToggleDuration = crl::time(80);
+constexpr auto kActivateDuration = crl::time(150);
+constexpr auto kInCacheIndex = 0;
+constexpr auto kOutCacheIndex = 1;
+constexpr auto kShadowCacheIndex = 0;
+constexpr auto kEmojiCacheIndex = 1;
+constexpr auto kMaskCacheIndex = 2;
+constexpr auto kCacheColumsCount = 3;
+
+[[nodiscard]] QSize CountOuterSize() {
+	const auto extended = QRect(
+		QPoint(),
+		st::reactionCornerSize
+	).marginsAdded(st::reactionCornerShadow);
+	const auto scale = Button::ScaleForState(ButtonState::Active);
+	return QSize(
+		int(base::SafeRound(extended.width() * scale)),
+		int(base::SafeRound(extended.height() * scale)));
+}
 
 } // namespace
 
-Reactions::Reactions(Data &&data)
+InlineList::InlineList(Data &&data)
 : _data(std::move(data))
 , _reactions(st::msgMinWidth / 2) {
 	layout();
 }
 
-void Reactions::update(Data &&data, int availableWidth) {
+void InlineList::update(Data &&data, int availableWidth) {
 	_data = std::move(data);
 	layout();
 	if (width() > 0) {
@@ -42,20 +63,20 @@ void Reactions::update(Data &&data, int availableWidth) {
 	}
 }
 
-void Reactions::updateSkipBlock(int width, int height) {
+void InlineList::updateSkipBlock(int width, int height) {
 	_reactions.updateSkipBlock(width, height);
 }
 
-void Reactions::removeSkipBlock() {
+void InlineList::removeSkipBlock() {
 	_reactions.removeSkipBlock();
 }
 
-void Reactions::layout() {
+void InlineList::layout() {
 	layoutReactionsText();
 	initDimensions();
 }
 
-void Reactions::layoutReactionsText() {
+void InlineList::layoutReactionsText() {
 	if (_data.reactions.empty()) {
 		_reactions.clear();
 		return;
@@ -87,18 +108,18 @@ void Reactions::layoutReactionsText() {
 		Ui::NameTextOptions());
 }
 
-QSize Reactions::countOptimalSize() {
+QSize InlineList::countOptimalSize() {
 	return QSize(_reactions.maxWidth(), _reactions.minHeight());
 }
 
-QSize Reactions::countCurrentSize(int newWidth) {
+QSize InlineList::countCurrentSize(int newWidth) {
 	if (newWidth >= maxWidth()) {
 		return optimalSize();
 	}
 	return { newWidth, _reactions.countHeight(newWidth) };
 }
 
-void Reactions::paint(
+void InlineList::paint(
 		Painter &p,
 		const Ui::ChatStyle *st,
 		int outerWidth,
@@ -106,8 +127,8 @@ void Reactions::paint(
 	_reactions.draw(p, 0, 0, outerWidth);
 }
 
-Reactions::Data ReactionsDataFromMessage(not_null<Message*> message) {
-	auto result = Reactions::Data();
+InlineListData InlineListDataFromMessage(not_null<Message*> message) {
+	auto result = InlineListData();
 
 	const auto item = message->message();
 	result.reactions = item->reactions();
@@ -115,111 +136,84 @@ Reactions::Data ReactionsDataFromMessage(not_null<Message*> message) {
 	return result;
 }
 
-ReactButton::ReactButton(
-	Fn<void()> update,
-	Fn<void()> react,
-	QRect bubble)
-: _update(std::move(update))
-, _handler(std::make_shared<LambdaClickHandler>(react)) {
-	updateGeometry(bubble);
+Button::Button(
+	Fn<void(QRect)> update,
+	ButtonParameters parameters)
+: _update(std::move(update)) {
+	_geometry = QRect(QPoint(), CountOuterSize());
+	_outbg = parameters.outbg;
 }
 
-void ReactButton::updateGeometry(QRect bubble) {
-	const auto topLeft = bubble.topLeft()
-		+ QPoint(bubble.width(), bubble.height())
-		+ QPoint(st::reactionCornerOut.x(), st::reactionCornerOut.y())
-		- QPoint(
-			st::reactionCornerSize.width(),
-			st::reactionCornerSize.height());
-	_geometry = QRect(topLeft, st::reactionCornerSize);
-	_imagePosition = _geometry.topLeft() + QPoint(
-		(_geometry.width() - st::reactionCornerImage) / 2,
-		(_geometry.height() - st::reactionCornerImage) / 2);
+Button::~Button() = default;
+
+bool Button::outbg() const {
+	return _outbg;
 }
 
-int ReactButton::bottomOutsideMargin(int fullHeight) const {
-	return _geometry.y() + _geometry.height() - fullHeight;
+bool Button::isHidden() const {
+	return (_state == State::Hidden) && !_scaleAnimation.animating();
 }
 
-std::optional<PointState> ReactButton::pointState(QPoint point) const {
-	if (!_geometry.contains(point)) {
-		return std::nullopt;
+QRect Button::geometry() const {
+	return _geometry;
+}
+
+void Button::applyParameters(ButtonParameters parameters) {
+	const auto size = _geometry.size();
+	const auto geometry = QRect(
+		parameters.center - QPoint(size.width(), size.height()) / 2,
+		size);
+	if (_outbg != parameters.outbg) {
+		_outbg = parameters.outbg;
+		_update(_geometry);
 	}
-	return PointState::Inside;
-}
-
-std::optional<TextState> ReactButton::textState(
-		QPoint point,
-		const StateRequest &request) const {
-	if (!_geometry.contains(point)) {
-		return std::nullopt;
+	if (_geometry != geometry) {
+		if (!_geometry.isNull()) {
+			_update(_geometry);
+		}
+		_geometry = geometry;
+		_update(_geometry);
 	}
-	auto result = TextState(nullptr, _handler);
-	result.reactionArea = _geometry;
-	return result;
+	applyState(parameters.active ? State::Active : State::Shown);
 }
 
-void ReactButton::paint(Painter &p, const PaintContext &context) {
-	const auto shown = _shownAnimation.value(_shown ? 1. : 0.);
-	if (shown == 0.) {
+void Button::applyState(State state) {
+	if (_state == state) {
 		return;
 	}
-	p.setOpacity(shown);
-	p.setBrush(context.messageStyle()->msgBg);
-	p.setPen(st::shadowFg);
-	const auto radius = _geometry.height() / 2;
-	p.drawRoundedRect(_geometry, radius, radius);
-	if (!_image.isNull()) {
-		p.drawImage(_imagePosition, _image);
-	}
-	p.setOpacity(1.);
+	const auto duration = (state == State::Hidden
+		|| _state == State::Hidden)
+		? kToggleDuration
+		: kActivateDuration;
+	_scaleAnimation.start(
+		[=] { _update(_geometry); },
+		ScaleForState(_state),
+		ScaleForState(state),
+		duration);
+	_state = state;
 }
 
-void ReactButton::toggle(bool shown) {
-	if (_shown == shown) {
-		return;
+float64 Button::ScaleForState(State state) {
+	switch (state) {
+	case State::Hidden: return 0.7;
+	case State::Shown: return 1.;
+	case State::Active: return 1.4;
 	}
-	_shown = shown;
-	_shownAnimation.start(_update, _shown ? 0. : 1., _shown ? 1. : 0., 120);
+	Unexpected("State in ReactionButton::ScaleForState.");
 }
 
-bool ReactButton::isHidden() const {
-	return !_shown && !_shownAnimation.animating();
+float64 Button::OpacityForScale(float64 scale) {
+	return (scale >= 1.)
+		? 1.
+		: ((scale - ScaleForState(State::Hidden))
+			/ (ScaleForState(State::Shown) - ScaleForState(State::Hidden)));
 }
 
-void ReactButton::show(not_null<const Data::Reaction*> reaction) {
-	if (_media && _media->owner()  == reaction->staticIcon) {
-		return;
-	}
-	_handler->setProperty(kReactionIdProperty, reaction->emoji);
-	_media = reaction->staticIcon->createMediaView();
-	const auto setImage = [=](not_null<Image*> image) {
-		const auto size = st::reactionCornerImage;
-		_image = Images::prepare(
-			image->original(),
-			size * style::DevicePixelRatio(),
-			size * style::DevicePixelRatio(),
-			Images::Option::Smooth | Images::Option::TransparentBackground,
-			size,
-			size);
-		_image.setDevicePixelRatio(style::DevicePixelRatio());
-	};
-	if (const auto image = _media->getStickerLarge()) {
-		setImage(image);
-	} else {
-		reaction->staticIcon->session().downloaderTaskFinished(
-		) | rpl::map([=] {
-			return _media->getStickerLarge();
-		}) | rpl::filter_nullptr() | rpl::take(
-			1
-		) | rpl::start_with_next([=](not_null<Image*> image) {
-			setImage(image);
-			_update();
-		}, _downloadTaskLifetime);
-	}
+float64 Button::currentScale() const {
+	return _scaleAnimation.value(ScaleForState(_state));
 }
 
-ReactionsMenu::ReactionsMenu(
+Selector::Selector(
 	QWidget *parent,
 	const std::vector<Data::Reaction> &list)
 : _dropdown(parent) {
@@ -331,7 +325,7 @@ ReactionsMenu::ReactionsMenu(
 	_dropdown.resizeToContent();
 }
 
-void ReactionsMenu::showAround(QRect area) {
+void Selector::showAround(QRect area) {
 	const auto parent = _dropdown.parentWidget();
 	const auto left = std::min(
 		std::max(area.x() + (area.width() - _dropdown.width()) / 2, 0),
@@ -345,7 +339,7 @@ void ReactionsMenu::showAround(QRect area) {
 	_dropdown.move(left, top);
 }
 
-void ReactionsMenu::toggle(bool shown, anim::type animated) {
+void Selector::toggle(bool shown, anim::type animated) {
 	if (animated == anim::type::normal) {
 		if (shown) {
 			using Origin = Ui::PanelAnimation::Origin;
@@ -362,65 +356,351 @@ void ReactionsMenu::toggle(bool shown, anim::type animated) {
 	}
 }
 
-[[nodiscard]] rpl::producer<QString> ReactionsMenu::chosen() const {
+[[nodiscard]] rpl::producer<QString> Selector::chosen() const {
 	return _chosen.events();
 }
 
-[[nodiscard]] rpl::lifetime &ReactionsMenu::lifetime() {
+[[nodiscard]] rpl::lifetime &Selector::lifetime() {
 	return _dropdown.lifetime();
 }
 
-ReactionsMenuManager::ReactionsMenuManager(QWidget *parent)
-: _parent(parent) {
+Manager::Manager(QWidget *selectorParent, Fn<void(QRect)> buttonUpdate)
+: _outer(CountOuterSize())
+, _inner(QRectF(
+	(_outer.width() - st::reactionCornerSize.width()) / 2.,
+	(_outer.height() - st::reactionCornerSize.height()) / 2.,
+	st::reactionCornerSize.width(),
+	st::reactionCornerSize.height()))
+, _buttonUpdate(std::move(buttonUpdate))
+, _selectorParent(selectorParent) {
+	const auto ratio = style::DevicePixelRatio();
+	_cacheInOut = QImage(
+		_outer.width() * 2 * ratio,
+		_outer.height() * kFramesCount * ratio,
+		QImage::Format_ARGB32_Premultiplied);
+	_cacheInOut.setDevicePixelRatio(ratio);
+	_cacheInOut.fill(Qt::transparent);
+	_cacheParts = QImage(
+		_outer.width() * kCacheColumsCount * ratio,
+		_outer.height() * kFramesCount * ratio,
+		QImage::Format_ARGB32_Premultiplied);
+	_cacheParts.setDevicePixelRatio(ratio);
+	_cacheParts.fill(Qt::transparent);
+	_shadowBuffer = QImage(
+		_outer * ratio,
+		QImage::Format_ARGB32_Premultiplied);
 }
 
-ReactionsMenuManager::~ReactionsMenuManager() = default;
+Manager::~Manager() = default;
 
-void ReactionsMenuManager::showReactionsMenu(
-		FullMsgId context,
-		QRect globalReactionArea,
-		const std::vector<Data::Reaction> &list) {
-	if (globalReactionArea.isEmpty()) {
+void Manager::showButton(ButtonParameters parameters) {
+	if (_button && _buttonContext != parameters.context) {
+		_button->applyState(ButtonState::Hidden);
+		_buttonHiding.push_back(std::move(_button));
+	}
+	_buttonContext = parameters.context;
+	if (!_buttonContext || _list.size() < 2) {
+		return;
+	}
+	if (!_button) {
+		_button = std::make_unique<Button>(_buttonUpdate, parameters);
+	} else {
+		_button->applyParameters(parameters);
+	}
+}
+
+void Manager::applyList(std::vector<Data::Reaction> list) {
+	constexpr auto proj = &Data::Reaction::emoji;
+	if (ranges::equal(_list, list, ranges::equal_to{}, proj, proj)) {
+		return;
+	}
+	_list = std::move(list);
+	if (_list.size() < 2) {
+		hideSelectors(anim::type::normal);
+	}
+	if (_list.empty()) {
+		_mainReactionMedia = nullptr;
+		return;
+	}
+	const auto main = _list.front().staticIcon;
+	if (_mainReactionMedia && _mainReactionMedia->owner() == main) {
+		return;
+	}
+	_mainReactionMedia = main->createMediaView();
+	if (const auto image = _mainReactionMedia->getStickerLarge()) {
+		setMainReactionImage(image->original());
+	} else {
+		main->session().downloaderTaskFinished(
+		) | rpl::map([=] {
+			return _mainReactionMedia->getStickerLarge();
+		}) | rpl::filter_nullptr() | rpl::take(
+			1
+		) | rpl::start_with_next([=](not_null<Image*> image) {
+			setMainReactionImage(image->original());
+		}, _mainReactionLifetime);
+	}
+}
+
+void Manager::setMainReactionImage(QImage image) {
+	_mainReactionImage = std::move(image);
+	ranges::fill(_validIn, false);
+	ranges::fill(_validOut, false);
+	ranges::fill(_validEmoji, false);
+}
+
+void Manager::removeStaleButtons() {
+	_buttonHiding.erase(
+		ranges::remove_if(_buttonHiding, &Button::isHidden),
+		end(_buttonHiding));
+}
+
+void Manager::paintButtons(Painter &p, const PaintContext &context) {
+	removeStaleButtons();
+	for (const auto &button : _buttonHiding) {
+		paintButton(p, context, button.get());
+	}
+	if (const auto current = _button.get()) {
+		paintButton(p, context, current);
+	}
+}
+
+void Manager::paintButton(
+		Painter &p,
+		const PaintContext &context,
+		not_null<Button*> button) {
+	const auto geometry = button->geometry();
+	if (!context.clip.intersects(geometry)) {
+		return;
+	}
+	const auto scale = button->currentScale();
+	const auto scaleMin = Button::ScaleForState(ButtonState::Hidden);
+	const auto scaleMax = Button::ScaleForState(ButtonState::Active);
+	const auto progress = (scale - scaleMin) / (scaleMax - scaleMin);
+	const auto frame = int(base::SafeRound(progress * (kFramesCount - 1)));
+	const auto useScale = scaleMin
+		+ (frame / float64(kFramesCount - 1)) * (scaleMax - scaleMin);
+	paintButton(p, context, button, frame, useScale);
+}
+
+void Manager::paintButton(
+		Painter &p,
+		const PaintContext &context,
+		not_null<Button*> button,
+		int frameIndex,
+		float64 scale) {
+	const auto opacity = Button::OpacityForScale(scale);
+	if (opacity == 0.) {
+		return;
+	}
+	const auto geometry = button->geometry();
+	const auto position = geometry.topLeft();
+	const auto size = geometry.size();
+	const auto outbg = button->outbg();
+	const auto patterned = outbg
+		&& context.bubblesPattern
+		&& !context.viewport.isEmpty()
+		&& !context.bubblesPattern->pixmap.size().isEmpty();
+	const auto shadow = context.st->shadowFg()->c;
+	if (opacity != 1.) {
+		p.setOpacity(opacity);
+	}
+	if (patterned) {
+		p.drawImage(
+			position,
+			_cacheParts,
+			validateShadow(frameIndex, scale, shadow));
+		// #TODO reactions
+	} else {
+		const auto &stm = context.st->messageStyle(outbg, false);
+		const auto background = stm.msgBg->c;
+		const auto source = validateFrame(
+			outbg,
+			frameIndex,
+			scale,
+			stm.msgBg->c,
+			shadow);
+		p.drawImage(position, _cacheInOut, source);
+	}
+	if (opacity != 1.) {
+		p.setOpacity(1.);
+	}
+}
+
+void Manager::applyPatternedShadow(const QColor &shadow) {
+	if (_shadow == shadow) {
+		return;
+	}
+	_shadow = shadow;
+	ranges::fill(_validIn, false);
+	ranges::fill(_validOut, false);
+	ranges::fill(_validShadow, false);
+}
+
+QRect Manager::cacheRect(int frameIndex, int columnIndex) const {
+	const auto ratio = style::DevicePixelRatio();
+	const auto origin = QPoint(
+		_outer.width() * columnIndex,
+		_outer.height() * frameIndex);
+	return QRect(ratio * origin, ratio * _outer);
+}
+
+QRect Manager::validateShadow(
+		int frameIndex,
+		float64 scale,
+		const QColor &shadow) {
+	applyPatternedShadow(shadow);
+	const auto result = cacheRect(frameIndex, kShadowCacheIndex);
+	if (_validShadow[frameIndex]) {
+		return result;
+	}
+
+	_shadowBuffer.fill(Qt::transparent);
+	auto p = QPainter(&_shadowBuffer);
+	auto hq = PainterHighQualityEnabler(p);
+	const auto radius = _inner.height() / 2;
+	const auto center = _inner.center();
+	const auto add = style::ConvertScale(1.5);
+	const auto shift = style::ConvertScale(1.);
+	const auto extended = _inner.marginsAdded({ add, add, add, add });
+	p.setPen(Qt::NoPen);
+	p.setBrush(shadow);
+	p.translate(center);
+	p.scale(scale, scale);
+	p.translate(-center);
+	p.drawRoundedRect(extended.translated(0, shift), radius, radius);
+	p.end();
+	_shadowBuffer = Images::prepareBlur(std::move(_shadowBuffer));
+
+	auto q = QPainter(&_cacheParts);
+	q.setCompositionMode(QPainter::CompositionMode_Source);
+	q.drawImage(result.topLeft() / style::DevicePixelRatio(), _shadowBuffer);
+
+	_validShadow[frameIndex] = true;
+	return result;
+}
+
+QRect Manager::validateEmoji(int frameIndex, float64 scale) {
+	const auto result = cacheRect(frameIndex, kEmojiCacheIndex);
+	if (_validEmoji[frameIndex]) {
+		return result;
+	}
+
+	auto p = QPainter(&_cacheParts);
+	const auto ratio = style::DevicePixelRatio();
+	const auto position = result.topLeft() / ratio;
+	p.setCompositionMode(QPainter::CompositionMode_Source);
+	p.fillRect(QRect(position, result.size() / ratio), Qt::transparent);
+	if (!_mainReactionImage.isNull()) {
+		const auto size = st::reactionCornerImage * scale;
+		const auto inner = _inner.translated(position);
+		const auto target = QRectF(
+			inner.x() + (inner.width() - size) / 2,
+			inner.y() + (inner.height() - size) / 2,
+			size,
+			size);
+
+		auto hq = PainterHighQualityEnabler(p);
+		p.drawImage(target, _mainReactionImage);
+	}
+
+	_validEmoji[frameIndex] = true;
+	return result;
+}
+
+QRect Manager::validateFrame(
+		bool outbg,
+		int frameIndex,
+		float64 scale,
+		const QColor &background,
+		const QColor &shadow) {
+	applyPatternedShadow(shadow);
+	auto &valid = outbg ? _validOut : _validIn;
+	auto &color = outbg ? _backgroundOut : _backgroundIn;
+	if (color != background) {
+		color = background;
+		ranges::fill(valid, false);
+	}
+
+	const auto columnIndex = outbg ? kOutCacheIndex : kInCacheIndex;
+	const auto result = cacheRect(frameIndex, columnIndex);
+	if (valid[frameIndex]) {
+		return result;
+	}
+
+	const auto shadowSource = validateShadow(frameIndex, scale, shadow);
+	const auto emojiSource = validateEmoji(frameIndex, scale);
+	const auto position = result.topLeft() / style::DevicePixelRatio();
+	auto p = QPainter(&_cacheInOut);
+	p.setCompositionMode(QPainter::CompositionMode_Source);
+	p.drawImage(position, _cacheParts, shadowSource);
+	p.setCompositionMode(QPainter::CompositionMode_SourceOver);
+
+	auto hq = PainterHighQualityEnabler(p);
+	const auto inner = _inner.translated(position);
+	const auto radius = inner.height() / 2;
+	const auto center = inner.center();
+	p.setPen(Qt::NoPen);
+	p.setBrush(background);
+	p.save();
+	p.translate(center);
+	p.scale(scale, scale);
+	p.translate(-center);
+	p.drawRoundedRect(inner, radius, radius);
+	p.restore();
+
+	p.drawImage(position, _cacheParts, emojiSource);
+
+	p.end();
+	valid[frameIndex] = true;
+	return result;
+}
+
+void Manager::showSelector(Fn<QPoint(QPoint)> mapToGlobal) {
+	if (!_button) {
+		showSelector({}, {});
+	} else {
+		const auto geometry = _button->geometry();
+		showSelector(
+			_buttonContext,
+			{ mapToGlobal(geometry.topLeft()), geometry.size() });
+	}
+}
+
+void Manager::showSelector(FullMsgId context, QRect globalButtonArea) {
+	if (globalButtonArea.isEmpty()) {
 		context = FullMsgId();
 	}
-	const auto listsEqual = ranges::equal(
-		_list,
-		list,
-		ranges::equal_to(),
-		&Data::Reaction::emoji,
-		&Data::Reaction::emoji);
-	const auto changed = (_context != context || !listsEqual);
-	if (_menu && changed) {
-		_menu->toggle(false, anim::type::normal);
-		_hiding.push_back(std::move(_menu));
+	const auto changed = (_selectorContext != context);
+	if (_selector && changed) {
+		_selector->toggle(false, anim::type::normal);
+		_selectorHiding.push_back(std::move(_selector));
 	}
-	_context = context;
-	_list = list;
-	if (list.size() < 2 || !context || (!changed && !_menu)) {
+	_selectorContext = context;
+	if (_list.size() < 2 || !context || (!changed && !_selector)) {
 		return;
-	} else if (!_menu) {
-		_menu = std::make_unique<ReactionsMenu>(_parent, list);
-		_menu->chosen(
+	} else if (!_selector) {
+		_selector = std::make_unique<Selector>(_selectorParent, _list);
+		_selector->chosen(
 		) | rpl::start_with_next([=](QString emoji) {
-			_menu->toggle(false, anim::type::normal);
-			_hiding.push_back(std::move(_menu));
+			_selector->toggle(false, anim::type::normal);
+			_selectorHiding.push_back(std::move(_selector));
 			_chosen.fire({ context, std::move(emoji) });
-		}, _menu->lifetime());
+		}, _selector->lifetime());
 	}
 	const auto area = QRect(
-		_parent->mapFromGlobal(globalReactionArea.topLeft()),
-		globalReactionArea.size());
-	_menu->showAround(area);
-	_menu->toggle(true, anim::type::normal);
+		_selectorParent->mapFromGlobal(globalButtonArea.topLeft()),
+		globalButtonArea.size());
+	_selector->showAround(area);
+	_selector->toggle(true, anim::type::normal);
 }
 
-void ReactionsMenuManager::hideAll(anim::type animated) {
+void Manager::hideSelectors(anim::type animated) {
 	if (animated == anim::type::instant) {
-		_hiding.clear();
-		_menu = nullptr;
-	} else if (_menu) {
-		_menu->toggle(false, anim::type::normal);
-		_hiding.push_back(std::move(_menu));
+		_selectorHiding.clear();
+		_selector = nullptr;
+	} else if (_selector) {
+		_selector->toggle(false, anim::type::normal);
+		_selectorHiding.push_back(std::move(_selector));
 	}
 }
 

Telegram/SourceFiles/history/view/history_view_reactions.h

@@ -12,6 +12,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "ui/widgets/inner_dropdown.h"
 
 class Image;
+class Painter;
 
 namespace Ui {
 class ChatStyle;
@@ -24,21 +25,24 @@ class DocumentMedia;
 } // namespace Data
 
 namespace HistoryView {
-
 using PaintContext = Ui::ChatPaintContext;
 enum class PointState : char;
 struct TextState;
 struct StateRequest;
 class Message;
+} // namespace HistoryView
 
-class Reactions final : public Object {
+namespace HistoryView::Reactions {
+
+struct InlineListData {
+	base::flat_map<QString, int> reactions;
+	QString chosenReaction;
+};
+
+class InlineList final : public Object {
 public:
-	struct Data {
-		base::flat_map<QString, int> reactions;
-		QString chosenReaction;
-	};
-
-	explicit Reactions(Data &&data);
+	using Data = InlineListData;
+	explicit InlineList(Data &&data);
 
 	void update(Data &&data, int availableWidth);
 	QSize countCurrentSize(int newWidth) override;
@@ -63,43 +67,64 @@ private:
 
 };
 
-[[nodiscard]] Reactions::Data ReactionsDataFromMessage(
+[[nodiscard]] InlineListData InlineListDataFromMessage(
 	not_null<Message*> message);
 
-class ReactButton final {
+enum class ButtonStyle {
+	Bubble,
+};
+
+struct ButtonParameters {
+	[[nodiscard]] ButtonParameters translated(QPoint delta) const {
+		auto result = *this;
+		result.center += delta;
+		return result;
+	}
+
+	FullMsgId context;
+	QPoint center;
+	ButtonStyle style = ButtonStyle::Bubble;
+	bool active = false;
+	bool outbg = false;
+};
+
+enum class ButtonState {
+	Hidden,
+	Shown,
+	Active,
+};
+
+class Button final {
 public:
-	ReactButton(Fn<void()> update, Fn<void()> react, QRect bubble);
+	Button(Fn<void(QRect)> update, ButtonParameters parameters);
+	~Button();
 
-	void updateGeometry(QRect bubble);
-	[[nodiscard]] int bottomOutsideMargin(int fullHeight) const;
-	[[nodiscard]] std::optional<PointState> pointState(QPoint point) const;
-	[[nodiscard]] std::optional<TextState> textState(
-		QPoint point,
-		const StateRequest &request) const;
+	void applyParameters(ButtonParameters parameters);
 
-	void paint(Painter &p, const PaintContext &context);
+	using State = ButtonState;
+	void applyState(State state);
 
-	void toggle(bool shown);
+	[[nodiscard]] bool outbg() const;
 	[[nodiscard]] bool isHidden() const;
-	void show(not_null<const Data::Reaction*> reaction);
+	[[nodiscard]] QRect geometry() const;
+	[[nodiscard]] float64 currentScale() const;
+	[[nodiscard]] static float64 ScaleForState(State state);
+	[[nodiscard]] static float64 OpacityForScale(float64 scale);
 
 private:
-	const Fn<void()> _update;
-	const ClickHandlerPtr _handler;
-	QRect _geometry;
-	bool _shown = false;
-	Ui::Animations::Simple _shownAnimation;
+	const Fn<void(QRect)> _update;
+	State _state = State::Hidden;
+	Ui::Animations::Simple _scaleAnimation;
 
-	QImage _image;
-	QPoint _imagePosition;
-	std::shared_ptr<Data::DocumentMedia> _media;
-	rpl::lifetime _downloadTaskLifetime;
+	QRect _geometry;
+	ButtonStyle _style = ButtonStyle::Bubble;
+	bool _outbg = false;
 
 };
 
-class ReactionsMenu final {
+class Selector final {
 public:
-	ReactionsMenu(
+	Selector(
 		QWidget *parent,
 		const std::vector<Data::Reaction> &list);
 
@@ -123,34 +148,88 @@ private:
 
 };
 
-class ReactionsMenuManager final {
+class Manager final {
 public:
-	explicit ReactionsMenuManager(QWidget *parent);
-	~ReactionsMenuManager();
+	Manager(QWidget *selectorParent, Fn<void(QRect)> buttonUpdate);
+	~Manager();
+
+	void applyList(std::vector<Data::Reaction> list);
+
+	void showButton(ButtonParameters parameters);
+	void paintButtons(Painter &p, const PaintContext &context);
+
+	void showSelector(Fn<QPoint(QPoint)> mapToGlobal);
+	void showSelector(FullMsgId context, QRect globalButtonArea);
+
+	void hideSelectors(anim::type animated);
 
 	struct Chosen {
 		FullMsgId context;
 		QString emoji;
 	};
-
-	void showReactionsMenu(
-		FullMsgId context,
-		QRect globalReactionArea,
-		const std::vector<Data::Reaction> &list);
-	void hideAll(anim::type animated);
-
 	[[nodiscard]] rpl::producer<Chosen> chosen() const {
 		return _chosen.events();
 	}
 
 private:
-	QWidget *_parent = nullptr;
-	rpl::event_stream<Chosen> _chosen;
+	static constexpr auto kFramesCount = 30;
 
-	std::unique_ptr<ReactionsMenu> _menu;
-	FullMsgId _context;
+	void removeStaleButtons();
+	void paintButton(
+		Painter &p,
+		const PaintContext &context,
+		not_null<Button*> button);
+	void paintButton(
+		Painter &p,
+		const PaintContext &context,
+		not_null<Button*> button,
+		int frame,
+		float64 scale);
+
+	void setMainReactionImage(QImage image);
+	void applyPatternedShadow(const QColor &shadow);
+	[[nodiscard]] QRect cacheRect(int frameIndex, int columnIndex) const;
+	QRect validateShadow(
+		int frameIndex,
+		float64 scale,
+		const QColor &shadow);
+	QRect validateEmoji(int frameIndex, float64 scale);
+	QRect validateFrame(
+		bool outbg,
+		int frameIndex,
+		float64 scale,
+		const QColor &background,
+		const QColor &shadow);
+
+	rpl::event_stream<Chosen> _chosen;
 	std::vector<Data::Reaction> _list;
-	std::vector<std::unique_ptr<ReactionsMenu>> _hiding;
+	QSize _outer;
+	QRectF _inner;
+	QImage _cacheInOut;
+	QImage _cacheParts;
+	QImage _shadowBuffer;
+	std::array<bool, kFramesCount> _validIn;
+	std::array<bool, kFramesCount> _validOut;
+	std::array<bool, kFramesCount> _validShadow;
+	std::array<bool, kFramesCount> _validEmoji;
+	std::array<bool, kFramesCount> _validMask;
+	QColor _backgroundIn;
+	QColor _backgroundOut;
+	QColor _shadow;
+
+	std::shared_ptr<Data::DocumentMedia> _mainReactionMedia;
+	QImage _mainReactionImage;
+	rpl::lifetime _mainReactionLifetime;
+
+	const Fn<void(QRect)> _buttonUpdate;
+	std::unique_ptr<Button> _button;
+	std::vector<std::unique_ptr<Button>> _buttonHiding;
+	FullMsgId _buttonContext;
+
+	QWidget *_selectorParent = nullptr;
+	std::unique_ptr<Selector> _selector;
+	std::vector<std::unique_ptr<Selector>> _selectorHiding;
+	FullMsgId _selectorContext;
 
 };
 

Telegram/SourceFiles/ui/chat/chat.style

@@ -955,9 +955,11 @@ sendAsButton: SendAsButton {
 	duration: 150;
 }
 
-reactionCornerSize: size(23px, 18px);
-reactionCornerOut: point(7px, 5px);
-reactionCornerImage: 14px;
+reactionCornerSize: size(27px, 19px);
+reactionCornerCenter: point(-6px, -5px);
+reactionCornerImage: 15px;
+reactionCornerShadow: margins(4px, 4px, 4px, 8px);
+reactionCornerActiveAreaPadding: margins(10px, 10px, 10px, 10px);
 
 reactionPopupImage: 25px;
 reactionPopupPadding: margins(5px, 5px, 5px, 5px);

Telegram/SourceFiles/window/window_session_controller.h

@@ -55,13 +55,8 @@ struct ChatThemeBackgroundData;
 namespace Data {
 struct CloudTheme;
 enum class CloudThemeType;
-struct Reaction;
 } // namespace Data
 
-namespace HistoryView {
-class ReactionsMenu;
-} // namespace HistoryView
-
 namespace Window {
 
 class MainWindow;