Keep reaction visible if mouse is over it.

Telegram/SourceFiles/history/history_inner_widget.cpp

@@ -2984,17 +2984,21 @@ void HistoryInner::mouseActionUpdate() {
 	auto mousePos = mapFromGlobal(_mousePosition);
 	auto point = _widget->clampMousePosition(mousePos);
 
-	auto block = (HistoryBlock*)nullptr;
-	auto item = (HistoryItem*)nullptr;
-	auto view = (Element*)nullptr;
 	QPoint m;
 
 	adjustCurrent(point.y());
-	if (_curHistory && !_curHistory->isEmpty()) {
-		block = _curHistory->blocks[_curBlock].get();
-		view = block->messages[_curItem].get();
-		item = view->data();
-
+	const auto reactionItemId = _reactionsManager->lookupButtonId(point);
+	const auto reactionItem = session().data().message(reactionItemId);
+	const auto reactionView = reactionItem
+		? reactionItem->mainView()
+		: nullptr;
+	const auto view = reactionView
+		? reactionView
+		: (_curHistory && !_curHistory->isEmpty())
+		? _curHistory->blocks[_curBlock]->messages[_curItem].get()
+		: nullptr;
+	const auto item = view ? view->data().get() : nullptr;
+	if (view) {
 		const auto was = App::mousedItem();
 		if (was != view) {
 			if (!_reactions.empty()) {

Telegram/SourceFiles/history/view/history_view_message.cpp

@@ -1790,10 +1790,6 @@ TextSelection Message::adjustSelection(
 
 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();
@@ -1807,6 +1803,12 @@ Reactions::ButtonParameters Message::reactionButtonParameters(
 	result.active = button.marginsAdded(
 		st::reactionCornerActiveAreaPadding
 	).contains(position);
+	if (!result.active) {
+		const auto top = marginTop();
+		if (!QRect(0, top, width(), height() - top).contains(position)) {
+			return {};
+		}
+	}
 	return result;
 }
 

Telegram/SourceFiles/history/view/history_view_reactions.cpp

@@ -36,17 +36,21 @@ constexpr auto kEmojiCacheIndex = 1;
 constexpr auto kMaskCacheIndex = 2;
 constexpr auto kCacheColumsCount = 3;
 
-[[nodiscard]] QSize CountOuterSize() {
+[[nodiscard]] QSize CountMaxSizeWithMargins(style::margins margins) {
 	const auto extended = QRect(
 		QPoint(),
 		st::reactionCornerSize
-	).marginsAdded(st::reactionCornerShadow);
+	).marginsAdded(margins);
 	const auto scale = Button::ScaleForState(ButtonState::Active);
 	return QSize(
 		int(base::SafeRound(extended.width() * scale)),
 		int(base::SafeRound(extended.height() * scale)));
 }
 
+[[nodiscard]] QSize CountOuterSize() {
+	return CountMaxSizeWithMargins(st::reactionCornerShadow);
+}
+
 } // namespace
 
 InlineList::InlineList(Data &&data)
@@ -140,8 +144,10 @@ Button::Button(
 	Fn<void(QRect)> update,
 	ButtonParameters parameters)
 : _update(std::move(update)) {
-	_geometry = QRect(QPoint(), CountOuterSize());
+	const auto initial = QRect(QPoint(), CountOuterSize());
+	_geometry = initial.translated(parameters.center - initial.center());
 	_outbg = parameters.outbg;
+	applyState(parameters.active ? State::Active : State::Shown);
 }
 
 Button::~Button() = default;
@@ -159,10 +165,8 @@ QRect Button::geometry() const {
 }
 
 void Button::applyParameters(ButtonParameters parameters) {
-	const auto size = _geometry.size();
-	const auto geometry = QRect(
-		parameters.center - QPoint(size.width(), size.height()) / 2,
-		size);
+	const auto geometry = _geometry.translated(
+		parameters.center - _geometry.center());
 	if (_outbg != parameters.outbg) {
 		_outbg = parameters.outbg;
 		_update(_geometry);
@@ -464,6 +468,20 @@ void Manager::paintButtons(Painter &p, const PaintContext &context) {
 	}
 }
 
+FullMsgId Manager::lookupButtonId(QPoint position) const {
+	if (const auto current = _button.get()) {
+		const auto geometry = current->geometry();
+		if (geometry.contains(position)) {
+			const auto maxInner = QRect({}, CountMaxSizeWithMargins({}));
+			const auto shift = geometry.center() - maxInner.center();
+			if (maxInner.translated(shift).contains(position)) {
+				return _buttonContext;
+			}
+		}
+	}
+	return {};
+}
+
 void Manager::paintButton(
 		Painter &p,
 		const PaintContext &context,

Telegram/SourceFiles/history/view/history_view_reactions.h

@@ -84,6 +84,7 @@ struct ButtonParameters {
 	FullMsgId context;
 	QPoint center;
 	ButtonStyle style = ButtonStyle::Bubble;
+	bool inside = false;
 	bool active = false;
 	bool outbg = false;
 };
@@ -157,6 +158,7 @@ public:
 
 	void showButton(ButtonParameters parameters);
 	void paintButtons(Painter &p, const PaintContext &context);
+	[[nodiscard]] FullMsgId lookupButtonId(QPoint position) const;
 
 	void showSelector(Fn<QPoint(QPoint)> mapToGlobal);
 	void showSelector(FullMsgId context, QRect globalButtonArea);