Show exact reactions count in channels.

Telegram/SourceFiles/history/history_inner_widget.cpp

@@ -16,6 +16,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "boxes/moderate_messages_box.h"
 #include "history/view/media/history_view_sticker.h"
 #include "history/view/media/history_view_web_page.h"
+#include "history/view/reactions/history_view_reactions.h"
 #include "history/view/reactions/history_view_reactions_button.h"
 #include "history/view/reactions/history_view_reactions_selector.h"
 #include "history/view/history_view_about_view.h"
@@ -2197,10 +2198,8 @@ void HistoryInner::showContextMenu(QContextMenuEvent *e, bool showFromTouch) {
 	const auto leaderOrSelf = groupLeaderOrSelf(_dragStateItem);
 	const auto hasWhoReactedItem = leaderOrSelf
 		&& Api::WhoReactedExists(leaderOrSelf, Api::WhoReactedList::All);
-	const auto clickedReaction = link
+	using namespace HistoryView::Reactions;
-		? link->property(
+	const auto clickedReaction = ReactionIdOfLink(link);
-			kReactionsCountEmojiProperty).value<Data::ReactionId>()
-		: Data::ReactionId();
 	_whoReactedMenuLifetime.destroy();
 	if (!clickedReaction.empty()
 		&& leaderOrSelf
@@ -4655,6 +4654,11 @@ QString HistoryInner::tooltipText() const {
 			}
 		}
 	} else if (const auto lnk = ClickHandler::getActive()) {
+		using namespace HistoryView::Reactions;
+		const auto count = ReactionCountOfLink(_dragStateItem, lnk);
+		if (count.count && count.shortened) {
+			return Lang::FormatCountDecimal(count.count);
+		}
 		return lnk->tooltip();
 	} else if (const auto view = Element::Moused()) {
 		StateRequest request;

Telegram/SourceFiles/history/view/history_view_list_widget.cpp

@@ -16,6 +16,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "history/history_item_text.h"
 #include "history/view/media/history_view_media.h"
 #include "history/view/media/history_view_sticker.h"
+#include "history/view/reactions/history_view_reactions.h"
 #include "history/view/reactions/history_view_reactions_button.h"
 #include "history/view/reactions/history_view_reactions_selector.h"
 #include "history/view/history_view_context_menu.h"
@@ -2788,10 +2789,7 @@ void ListWidget::showContextMenu(QContextMenuEvent *e, bool showFromTouch) {
 		: _overElement
 		? _overElement->data().get()
 		: nullptr;
-	const auto clickedReaction = link
+	const auto clickedReaction = Reactions::ReactionIdOfLink(link);
-		? link->property(
-			kReactionsCountEmojiProperty).value<Data::ReactionId>()
-		: Data::ReactionId();
 	_whoReactedMenuLifetime.destroy();
 	if (!clickedReaction.empty()
 		&& overItem

Telegram/SourceFiles/history/view/reactions/history_view_reactions.cpp

@@ -844,4 +844,30 @@ InlineListData InlineListDataFromMessage(not_null<Message*> message) {
 	return result;
 }
 
-} // namespace HistoryView
+ReactionId ReactionIdOfLink(const ClickHandlerPtr &link) {
+	return link
+		? link->property(kReactionsCountEmojiProperty).value<ReactionId>()
+		: ReactionId();
+}
+
+ReactionCount ReactionCountOfLink(
+		HistoryItem *item,
+		const ClickHandlerPtr &link) {
+	const auto id = ReactionIdOfLink(link);
+	if (!item || !id) {
+		return {};
+	}
+	const auto groups = &item->history()->owner().groups();
+	if (const auto group = groups->find(item)) {
+		item = group->items.front();
+	}
+	const auto &list = item->reactions();
+	const auto i = ranges::find(list, id, &Data::MessageReaction::id);
+	if (i == end(list) || !i->count) {
+		return {};
+	}
+	const auto formatted = Lang::FormatCountToShort(i->count);
+	return { .count = i->count, .shortened = formatted.shortened };
+}
+
+} // namespace HistoryView::Reactions

Telegram/SourceFiles/history/view/reactions/history_view_reactions.h

@@ -149,4 +149,14 @@ private:
 [[nodiscard]] InlineListData InlineListDataFromMessage(
 	not_null<Message*> message);
 
-} // namespace HistoryView
+[[nodiscard]] ReactionId ReactionIdOfLink(const ClickHandlerPtr &link);
+
+struct ReactionCount {
+	int count = 0;
+	bool shortened = false;
+};
+[[nodiscard]] ReactionCount ReactionCountOfLink(
+	HistoryItem *item,
+	const ClickHandlerPtr &link);
+
+} // namespace HistoryView::Reactions

Telegram/SourceFiles/lang/lang_tag.cpp

@@ -929,6 +929,7 @@ ShortenedCount FormatCountToShort(int64 number) {
 		// Update given number.
 		// E.g. 12345 will be 12000.
 		result.number = rounded * divider;
+		result.shortened = true;
 	};
 	if (abs >= 1'000'000) {
 		shorten(1'000'000, 'M');

Telegram/SourceFiles/lang/lang_tag.h

@@ -22,6 +22,7 @@ constexpr auto kTagReplacementSize = 4;
 struct ShortenedCount {
 	int64 number = 0;
 	QString string;
+	bool shortened = false;
 };
 [[nodiscard]] ShortenedCount FormatCountToShort(int64 number);
 [[nodiscard]] QString FormatCountDecimal(int64 number);