Added ability to save state for recent posts in statistical info.

Telegram/CMakeLists.txt

@@ -884,6 +884,7 @@ PRIVATE
     info/profile/info_profile_widget.h
     info/settings/info_settings_widget.cpp
     info/settings/info_settings_widget.h
+    info/statistics/info_statistics_common.h
     info/statistics/info_statistics_inner_widget.cpp
     info/statistics/info_statistics_inner_widget.h
     info/statistics/info_statistics_list_controllers.cpp

Telegram/SourceFiles/info/statistics/info_statistics_common.h

@@ -0,0 +1,19 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#pragma once
+
+#include "data/data_statistics.h"
+
+namespace Info::Statistics {
+
+struct SavedState final {
+	Data::AnyStatistics stats;
+	base::flat_map<MsgId, QImage> recentPostPreviews;
+};
+
+} // namespace Info::Statistics

Telegram/SourceFiles/info/statistics/info_statistics_inner_widget.cpp

@@ -470,78 +470,6 @@ void FillOverview(
 	::Settings::AddSkip(content, st::statisticsLayerOverviewMargins.bottom());
 }
 
-void FillRecentPosts(
-		not_null<Ui::VerticalLayout*> container,
-		const Descriptor &descriptor,
-		const Data::ChannelStatistics &stats,
-		Fn<void(FullMsgId)> showMessageStatistic) {
-	if (stats.recentMessageInteractions.empty()) {
-		return;
-	}
-
-	const auto wrap = container->add(
-		object_ptr<Ui::SlideWrap<Ui::VerticalLayout>>(
-			container,
-			object_ptr<Ui::VerticalLayout>(container)));
-	const auto content = wrap->entity();
-	AddHeader(content, tr::lng_stats_recent_messages_title, { stats, {} });
-	::Settings::AddSkip(content);
-
-	const auto addMessage = [=](
-			not_null<Ui::VerticalLayout*> messageWrap,
-			not_null<HistoryItem*> item,
-			const Data::StatisticsMessageInteractionInfo &info) {
-		const auto button = messageWrap->add(
-			object_ptr<Ui::SettingsButton>(
-				messageWrap,
-				rpl::never<QString>(),
-				st::statisticsRecentPostButton));
-		const auto raw = Ui::CreateChild<MessagePreview>(
-			button,
-			item,
-			info.viewsCount,
-			info.forwardsCount);
-		raw->show();
-		button->sizeValue(
-		) | rpl::start_with_next([=](const QSize &s) {
-			if (!s.isNull()) {
-				raw->setGeometry(Rect(s)
-					- st::statisticsRecentPostButton.padding);
-			}
-		}, raw->lifetime());
-		button->setClickedCallback([=, fullId = item->fullId()] {
-			showMessageStatistic(fullId);
-		});
-		::Settings::AddSkip(messageWrap);
-		if (!wrap->toggled()) {
-			wrap->toggle(true, anim::type::normal);
-		}
-	};
-
-	auto foundLoaded = false;
-	const auto &peer = descriptor.peer;
-	for (const auto &recent : stats.recentMessageInteractions) {
-		const auto messageWrap = content->add(
-			object_ptr<Ui::VerticalLayout>(content));
-		const auto msgId = recent.messageId;
-		if (const auto item = peer->owner().message(peer, msgId)) {
-			addMessage(messageWrap, item, recent);
-			foundLoaded = true;
-			continue;
-		}
-		const auto callback = crl::guard(content, [=] {
-			if (const auto item = peer->owner().message(peer, msgId)) {
-				addMessage(messageWrap, item, recent);
-				content->resizeToWidth(content->width());
-			}
-		});
-		peer->session().api().requestMessageData(peer, msgId, callback);
-	}
-	if (!foundLoaded) {
-		wrap->toggle(false, anim::type::instant);
-	}
-}
-
 } // namespace
 
 InnerWidget::InnerWidget(
@@ -581,7 +509,7 @@ void InnerWidget::load() {
 			descriptor.api->request(
 				descriptor.peer
 			) | rpl::start_with_done([=] {
-				_loadedStats = Data::AnyStatistics{
+				_state.stats = Data::AnyStatistics{
 					descriptor.api->channelStats(),
 					descriptor.api->supergroupStats(),
 				};
@@ -596,7 +524,7 @@ void InnerWidget::load() {
 				_contextId);
 
 			api->request([=](const Data::MessageStatistics &data) {
-				_loadedStats = Data::AnyStatistics{ .message = data };
+				_state.stats = Data::AnyStatistics{ .message = data };
 				fill();
 
 				finishLoading();
@@ -613,16 +541,13 @@ void InnerWidget::fill() {
 		lifetime().make_state<Api::Statistics>(&_peer->session().api()),
 		_controller->uiShow()->toastParent(),
 	};
-	FillOverview(inner, _loadedStats);
-	FillStatistic(inner, descriptor, _loadedStats);
-	const auto &channel = _loadedStats.channel;
-	const auto &supergroup = _loadedStats.supergroup;
-	const auto &message = _loadedStats.message;
+	FillOverview(inner, _state.stats);
+	FillStatistic(inner, descriptor, _state.stats);
+	const auto &channel = _state.stats.channel;
+	const auto &supergroup = _state.stats.supergroup;
+	const auto &message = _state.stats.message;
 	if (channel) {
-		auto showMessage = [=](FullMsgId fullId) {
-			_showRequests.fire({ .messageStatistic = fullId });
-		};
-		FillRecentPosts(inner, descriptor, channel, showMessage);
+		fillRecentPosts();
 	} else if (supergroup) {
 		const auto showPeerInfo = [=](not_null<PeerData*> peer) {
 			_showRequests.fire({ .info = peer->id });
@@ -677,15 +602,95 @@ void InnerWidget::fill() {
 	}
 }
 
+void InnerWidget::fillRecentPosts() {
+	const auto &stats = _state.stats.channel;
+	if (!stats || stats.recentMessageInteractions.empty()) {
+		return;
+	}
+	_messagePreviews.reserve(stats.recentMessageInteractions.size());
+	const auto container = this;
+
+	const auto wrap = container->add(
+		object_ptr<Ui::SlideWrap<Ui::VerticalLayout>>(
+			container,
+			object_ptr<Ui::VerticalLayout>(container)));
+	const auto content = wrap->entity();
+	AddHeader(content, tr::lng_stats_recent_messages_title, { stats, {} });
+	::Settings::AddSkip(content);
+
+	const auto addMessage = [=](
+			not_null<Ui::VerticalLayout*> messageWrap,
+			not_null<HistoryItem*> item,
+			const Data::StatisticsMessageInteractionInfo &info) {
+		const auto button = messageWrap->add(
+			object_ptr<Ui::SettingsButton>(
+				messageWrap,
+				rpl::never<QString>(),
+				st::statisticsRecentPostButton));
+		auto it = _state.recentPostPreviews.find(item->fullId().msg);
+		auto cachedPreview = (it != end(_state.recentPostPreviews))
+			? base::take(it->second)
+			: QImage();
+		const auto raw = Ui::CreateChild<MessagePreview>(
+			button,
+			item,
+			info.viewsCount,
+			info.forwardsCount,
+			std::move(cachedPreview));
+
+		_messagePreviews.push_back(raw);
+		raw->show();
+		button->sizeValue(
+		) | rpl::start_with_next([=](const QSize &s) {
+			if (!s.isNull()) {
+				raw->setGeometry(Rect(s)
+					- st::statisticsRecentPostButton.padding);
+			}
+		}, raw->lifetime());
+		button->setClickedCallback([=, fullId = item->fullId()] {
+			_showRequests.fire({ .messageStatistic = fullId });
+		});
+		::Settings::AddSkip(messageWrap);
+		if (!wrap->toggled()) {
+			wrap->toggle(true, anim::type::normal);
+		}
+	};
+
+	auto foundLoaded = false;
+	for (const auto &recent : stats.recentMessageInteractions) {
+		const auto messageWrap = content->add(
+			object_ptr<Ui::VerticalLayout>(content));
+		const auto msgId = recent.messageId;
+		if (const auto item = _peer->owner().message(_peer, msgId)) {
+			addMessage(messageWrap, item, recent);
+			foundLoaded = true;
+			continue;
+		}
+		const auto callback = crl::guard(content, [=] {
+			if (const auto item = _peer->owner().message(_peer, msgId)) {
+				addMessage(messageWrap, item, recent);
+				content->resizeToWidth(content->width());
+			}
+		});
+		_peer->session().api().requestMessageData(_peer, msgId, callback);
+	}
+	if (!foundLoaded) {
+		wrap->toggle(false, anim::type::instant);
+	}
+}
+
 void InnerWidget::saveState(not_null<Memento*> memento) {
-	memento->setStates(base::take(_loadedStats));
+	for (const auto &message : _messagePreviews) {
+		message->saveState(_state);
+	}
+	memento->setState(base::take(_state));
 }
 
 void InnerWidget::restoreState(not_null<Memento*> memento) {
-	_loadedStats = memento->states();
-	if (_loadedStats.channel
-		|| _loadedStats.supergroup
-		|| _loadedStats.message) {
+	_state = memento->state();
+	if (_state.stats.channel
+		|| _state.stats.supergroup
+		|| _state.stats.message) {
 		fill();
 	} else {
 		load();

Telegram/SourceFiles/info/statistics/info_statistics_inner_widget.h

@@ -8,7 +8,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #pragma once
 
 #include "base/object_ptr.h"
-#include "data/data_statistics.h"
+#include "info/statistics/info_statistics_common.h"
 #include "ui/widgets/scroll_area.h"
 #include "ui/wrap/vertical_layout.h"
 
@@ -19,6 +19,7 @@ class Controller;
 namespace Info::Statistics {
 
 class Memento;
+class MessagePreview;
 
 class InnerWidget final : public Ui::VerticalLayout {
 public:
@@ -48,12 +49,15 @@ public:
 private:
 	void load();
 	void fill();
+	void fillRecentPosts();
 
 	not_null<Controller*> _controller;
 	not_null<PeerData*> _peer;
 	FullMsgId _contextId;
 
-	Data::AnyStatistics _loadedStats;
+	std::vector<not_null<MessagePreview*>> _messagePreviews;
+
+	SavedState _state;
 
 	rpl::event_stream<Ui::ScrollToRequest> _scrollToRequests;
 	rpl::event_stream<ShowRequest> _showRequests;

Telegram/SourceFiles/info/statistics/info_statistics_recent_message.cpp

@@ -18,6 +18,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "history/history_item.h"
 #include "history/history_item_helpers.h"
 #include "history/view/history_view_item_preview.h"
+#include "info/statistics/info_statistics_common.h"
 #include "lang/lang_keys.h"
 #include "main/main_session.h"
 #include "ui/effects/ripple_animation.h"
@@ -69,7 +70,8 @@ MessagePreview::MessagePreview(
 	not_null<Ui::RpWidget*> parent,
 	not_null<HistoryItem*> item,
 	int views,
-	int shares)
+	int shares,
+	QImage cachedPreview)
 : Ui::RpWidget(parent)
 , _item(item)
 , _date(
@@ -88,7 +90,8 @@ MessagePreview::MessagePreview(
 		lt_count_decimal,
 		shares))
 , _viewsWidth(_views.maxWidth())
-, _sharesWidth(_shares.maxWidth()) {
+, _sharesWidth(_shares.maxWidth())
+, _preview(std::move(cachedPreview)) {
 	_text.setMarkedText(
 		st::defaultPeerListItem.nameStyle,
 		_item->toPreview({ .generateImages = false }).text,
@@ -97,7 +100,9 @@ MessagePreview::MessagePreview(
 			.session = &item->history()->session(),
 			.customEmojiRepaint = [=] { update(); },
 		});
-	processPreview(item);
+	if (_preview.isNull()) {
+		processPreview(item);
+	}
 }
 
 void MessagePreview::processPreview(not_null<HistoryItem*> item) {
@@ -226,4 +231,10 @@ void MessagePreview::paintEvent(QPaintEvent *e) {
 	});
 }
 
+void MessagePreview::saveState(SavedState &state) const {
+	if (!_lifetimeDownload) {
+		state.recentPostPreviews[_item->fullId().msg] = _preview;
+	}
+}
+
 } // namespace Info::Statistics

Telegram/SourceFiles/info/statistics/info_statistics_recent_message.h

@@ -22,13 +22,18 @@ class SpoilerAnimation;
 
 namespace Info::Statistics {
 
+struct SavedState;
+
 class MessagePreview final : public Ui::RpWidget {
 public:
 	MessagePreview(
 		not_null<Ui::RpWidget*> parent,
 		not_null<HistoryItem*> item,
 		int views,
-		int shares);
+		int shares,
+		QImage cachedPreview);
+
+	void saveState(SavedState &state) const;
 
 protected:
 	void paintEvent(QPaintEvent *e) override;

Telegram/SourceFiles/info/statistics/info_statistics_widget.cpp

@@ -31,12 +31,12 @@ Section Memento::section() const {
 	return Section(Section::Type::Statistics);
 }
 
-void Memento::setStates(Memento::States states) {
-	_states = std::move(states);
+void Memento::setState(SavedState state) {
+	_state = std::move(state);
 }
 
-Memento::States Memento::states() {
-	return base::take(_states);
+SavedState Memento::state() {
+	return base::take(_state);
 }
 
 object_ptr<ContentWidget> Memento::createWidget(

Telegram/SourceFiles/info/statistics/info_statistics_widget.h

@@ -8,7 +8,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #pragma once
 
 #include "info/info_content_widget.h"
-#include "data/data_statistics.h"
+#include "info/statistics/info_statistics_common.h"
 
 namespace Info::Statistics {
 
@@ -27,13 +27,11 @@ public:
 
 	Section section() const override;
 
-	using States = Data::AnyStatistics;
-
-	void setStates(States states);
-	[[nodiscard]] States states();
+	void setState(SavedState states);
+	[[nodiscard]] SavedState state();
 
 private:
-	States _states;
+	SavedState _state;
 
 };