Support about text above reactions strip.

Telegram/SourceFiles/chat_helpers/chat_helpers.style

@@ -122,6 +122,8 @@ EmojiPan {
 	removeSet: IconButton;
 	boxLabel: FlatLabel;
 	icons: ComposeIcons;
+	about: FlatLabel;
+	aboutPadding: margins;
 	autocompleteBottomSkip: pixels;
 }
 
@@ -617,6 +619,14 @@ defaultComposeIcons: ComposeIcons {
 		{ "chat/reactions_expand_panel", windowSubTextFg },
 	};
 }
+defaultEmojiPanAbout: FlatLabel(defaultFlatLabel) {
+	minWidth: 10px;
+	align: align(top);
+	textFg: windowSubTextFg;
+	style: TextStyle(defaultTextStyle) {
+		font: font(11px);
+	}
+}
 defaultEmojiPan: EmojiPan {
 	margin: margins(7px, 0px, 7px, 0px);
 	padding: margins(7px, 0px, 4px, 7px);
@@ -658,6 +668,8 @@ defaultEmojiPan: EmojiPan {
 	removeSet: stickerPanRemoveSet;
 	boxLabel: boxLabel;
 	icons: defaultComposeIcons;
+	about: defaultEmojiPanAbout;
+	aboutPadding: margins(12px, 2px, 12px, 2px);
 	autocompleteBottomSkip: 0px;
 }
 statusEmojiPan: EmojiPan(defaultEmojiPan) {

Telegram/SourceFiles/chat_helpers/stickers_list_footer.cpp

@@ -635,7 +635,7 @@ void StickersListFooter::paint(
 	if (context.expanding) {
 		const auto both = clip.intersected(
 			context.clip.marginsRemoved(
-				{ context.radius, 0, context.radius, 0 }));
+				{ 0/*context.radius*/, 0, context.radius, 0 }));
 		if (both.isEmpty()) {
 			return;
 		}

Telegram/SourceFiles/history/history_inner_widget.cpp

@@ -2636,7 +2636,9 @@ void HistoryInner::showContextMenu(QContextMenuEvent *e, bool showFromTouch) {
 			desiredPosition,
 			reactItem,
 			[=](ChosenReaction reaction) { reactionChosen(reaction); },
-			TextWithEntities(),
+			(reactItem->reactionsAreTags()
+				? TextWithEntities{ u"Organize your Saved Messages with tags. Learn More..."_q }
+				: TextWithEntities()),
 			_controller->cachedReactionIconFactory().createMethod())
 		: AttachSelectorResult::Skipped;
 	if (attached == AttachSelectorResult::Failed) {

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

@@ -7,6 +7,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 */
 #include "history/view/reactions/history_view_reactions_selector.h"
 
+#include "ui/widgets/labels.h"
 #include "ui/widgets/scroll_area.h"
 #include "ui/widgets/popup_menu.h"
 #include "ui/widgets/shadow.h"
@@ -195,6 +196,7 @@ Selector::Selector(
 	const style::EmojiPan &st,
 	std::shared_ptr<ChatHelpers::Show> show,
 	const Data::PossibleItemReactionsRef &reactions,
+	TextWithEntities about,
 	IconFactory iconFactory,
 	Fn<void(bool fast)> close,
 	bool child)
@@ -207,6 +209,7 @@ Selector::Selector(
 		? ChatHelpers::EmojiListMode::FullReactions
 		: ChatHelpers::EmojiListMode::RecentReactions),
 	{},
+	std::move(about),
 	iconFactory,
 	close,
 	child) {
@@ -227,6 +230,7 @@ Selector::Selector(
 	{ .customAllowed = true },
 	mode,
 	std::move(recent),
+	{},
 	nullptr,
 	close,
 	child) {
@@ -239,6 +243,7 @@ Selector::Selector(
 	const Data::PossibleItemReactionsRef &reactions,
 	ChatHelpers::EmojiListMode mode,
 	std::vector<DocumentId> recent,
+	TextWithEntities about,
 	IconFactory iconFactory,
 	Fn<void(bool fast)> close,
 	bool child)
@@ -261,6 +266,12 @@ Selector::Selector(
 		crl::guard(this, [=] { update(_inner); }),
 		std::move(iconFactory))
 	: nullptr)
+, _about(about.empty()
+	? nullptr
+	: std::make_unique<Ui::FlatLabel>(
+		this,
+		rpl::single(about),
+		_st.about))
 , _size(st::reactStripSize)
 , _skipx(countSkipLeft())
 , _skipy((st::reactStripHeight - st::reactStripSize) / 2) {
@@ -269,6 +280,8 @@ Selector::Selector(
 	_useTransparency = child || Ui::Platform::TranslucentWindowsSupported();
 }
 
+Selector::~Selector() = default;
+
 bool Selector::useTransparency() const {
 	return _useTransparency;
 }
@@ -332,6 +345,27 @@ int Selector::extendTopForCategories() const {
 	return _reactions.customAllowed ? _st.footer : 0;
 }
 
+int Selector::extendTopForCategoriesAndAbout(int width) const {
+	if (_about) {
+		const auto padding = _st.aboutPadding;
+		const auto available = width - padding.left() - padding.right();
+		const auto countAboutHeight = [&](int width) {
+			_about->resizeToWidth(width);
+			return _about->height();
+		};
+		const auto desired = Ui::FindNiceTooltipWidth(
+			std::min(available, _st.about.minWidth * 2),
+			available,
+			countAboutHeight);
+
+		_about->resizeToWidth(desired);
+		_aboutExtend = padding.top() + _about->height() + padding.bottom();
+	} else {
+		_aboutExtend = 0;
+	}
+	return std::max(extendTopForCategories(), _aboutExtend);
+}
+
 int Selector::minimalHeight() const {
 	return _skipy
 		+ std::min(_recentRows * _size, st::emojiPanMinHeight)
@@ -351,19 +385,33 @@ void Selector::initGeometry(int innerTop) {
 	const auto width = _useTransparency
 		? (innerWidth + margins.left() + margins.right())
 		: parent.width();
-	const auto height = innerHeight + margins.top() + margins.bottom();
-	const auto left = style::RightToLeft() ? 0 : (parent.width() - width);
+	const auto forAbout = width - margins.left() - margins.right();
 	_collapsedTopSkip = _useTransparency
-		? (extendTopForCategories() + _specialExpandTopSkip)
+		? (extendTopForCategoriesAndAbout(forAbout) + _specialExpandTopSkip)
 		: 0;
+	_topAddOnExpand = extendTopForCategories()
+		- _aboutExtend
+		+ _specialExpandTopSkip;
+	const auto height = margins.top()
+		+ _aboutExtend
+		+ innerHeight
+		+ margins.bottom();
+	const auto left = style::RightToLeft() ? 0 : (parent.width() - width);
 	const auto top = innerTop - margins.top() - _collapsedTopSkip;
 	const auto add = _st.icons.stripBubble.height() - margins.bottom();
-	_outer = QRect(0, _collapsedTopSkip, width, height);
+	_outer = QRect(0, _collapsedTopSkip - _aboutExtend, width, height);
 	_outerWithBubble = _outer.marginsAdded({ 0, 0, 0, add });
 	setGeometry(_outerWithBubble.marginsAdded(
-		{ 0, _collapsedTopSkip, 0, 0 }
+		{ 0, _outer.y(), 0, 0}
 	).translated(left, top));
-	_inner = _outer.marginsRemoved(margins);
+	_inner = _outer.marginsRemoved(
+		margins + QMargins{ 0, _aboutExtend, 0, 0 });
+	if (_about) {
+		_about->move(
+			_inner.x() + (_inner.width() - _about->width()) / 2,
+			_outer.y() + margins.top() + _st.aboutPadding.top());
+		_aboutCache = Ui::GrabWidgetToImage(_about.get());
+	}
 
 	if (!_strip) {
 		expand();
@@ -390,6 +438,14 @@ void Selector::updateShowState(
 		&& !appearing
 		&& !_paintBuffer.isNull()) {
 		paintBackgroundToBuffer();
+		if (_about && _about->isHidden()) {
+			_about->show();
+		}
+	} else if (_useTransparency
+		&& !_appearing
+		&& appearing
+		&& _about) {
+		_about->hide();
 	}
 	_appearing = appearing;
 	_toggling = toggling;
@@ -416,7 +472,6 @@ void Selector::paintAppearing(QPainter &p) {
 	Expects(_strip != nullptr);
 
 	p.setOpacity(_appearOpacity);
-
 	const auto factor = style::DevicePixelRatio();
 	if (_paintBuffer.size() != _outerWithBubble.size() * factor) {
 		_paintBuffer = _cachedRound.PrepareImage(_outerWithBubble.size());
@@ -428,7 +483,7 @@ void Selector::paintAppearing(QPainter &p) {
 	const auto fullWidth = _inner.x() + appearedWidth + margins.right();
 	const auto size = QSize(fullWidth, _outer.height());
 
-	q.translate(_inner.topLeft() - QPoint(0, _collapsedTopSkip));
+	q.translate(_inner.topLeft() - QPoint(0, _outer.y()));
 	_strip->paint(
 		q,
 		{ _skipx, _skipy },
@@ -439,7 +494,7 @@ void Selector::paintAppearing(QPainter &p) {
 
 	_cachedRound.setBackgroundColor(_st.bg->c);
 	_cachedRound.setShadowColor(st::shadowFg->c);
-	q.translate(QPoint(0, _collapsedTopSkip) - _inner.topLeft());
+	q.translate(QPoint(0, _outer.y()) - _inner.topLeft());
 	const auto radius = st::reactStripHeight / 2;
 	_cachedRound.overlayExpandedBorder(
 		q,
@@ -460,6 +515,15 @@ void Selector::paintAppearing(QPainter &p) {
 		_outer.topLeft(),
 		_paintBuffer,
 		QRect(QPoint(), QSize(fullWidth, height()) * factor));
+
+	const auto aboutRight = _inner.x() + appearedWidth;
+	if (_about && _about->isHidden() && aboutRight > _about->x()) {
+		const auto aboutWidth = aboutRight - _about->x();
+		p.drawImage(
+			_about->geometry().topLeft(),
+			_aboutCache,
+			QRect(QPoint(), QSize(aboutWidth, _about->height()) * factor));
+	}
 }
 
 void Selector::paintBackgroundToBuffer() {
@@ -478,8 +542,11 @@ void Selector::paintBackgroundToBuffer() {
 	auto p = QPainter(&_paintBuffer);
 	const auto radius = _inner.height() / 2.;
 	const auto frame = _cachedRound.validateFrame(0, 1., radius);
-	const auto outer = _outer.translated(0, -_collapsedTopSkip);
-	_cachedRound.FillWithImage(p, outer, frame);
+	const auto outer = _outer.translated(0, -_outer.y());
+	const auto fill = _cachedRound.FillWithImage(p, outer, frame);
+	if (!fill.isEmpty()) {
+		p.fillRect(fill, _st.bg);
+	}
 	paintBubble(p, _inner.width());
 }
 
@@ -507,6 +574,13 @@ void Selector::paintExpanding(Painter &p, float64 progress) {
 	const auto rects = updateExpandingRects(progress);
 	paintExpandingBg(p, rects);
 	progress /= kFullDuration;
+	if (_about && !_aboutCache.isNull()) {
+		p.setClipping(false);
+		p.setOpacity((1. - progress) * (1. - progress));
+		const auto y = _about->y() - _outer.y() + rects.outer.y();
+		p.drawImage(_about->x(), y, _aboutCache);
+		p.setOpacity(1.);
+	}
 	if (_footer) {
 		_footer->paintExpanding(
 			p,
@@ -537,25 +611,36 @@ Selector::ExpandingRects Selector::updateExpandingRects(float64 progress) {
 		: radiusStart;
 	const auto margins = marginsForShadow();
 	const auto expanding = anim::easeOutCirc(1., progress);
-	const auto expandUp = anim::interpolate(0, _collapsedTopSkip, expanding);
+	const auto expandUp = anim::interpolate(0, _topAddOnExpand, expanding);
 	const auto expandDown = anim::interpolate(
 		0,
 		(height() - _outer.y() - _outer.height()),
 		expanding);
 	const auto outer = _outer.marginsAdded({ 0, expandUp, 0, expandDown });
-	const auto categories = anim::interpolate(
-		0,
-		extendTopForCategories(),
-		expanding);
-	const auto inner = outer.marginsRemoved(margins);
-	_shadowTop = inner.y() + categories;
+	const auto inner = outer.marginsRemoved(margins
+		+ QMargins{
+			0,
+			anim::interpolate(_aboutExtend, 0, expanding),
+			0,
+			0 });
+	const auto list = outer.marginsRemoved(margins
+		+ QMargins{
+			0,
+			anim::interpolate(
+				_aboutExtend,
+				extendTopForCategories(),
+				expanding),
+			0,
+			0 });
+	_shadowTop = list.y();
+	const auto categories = list.y() - inner.y();
 	_shadowSkip = (_useTransparency && categories < radius)
 		? int(base::SafeRound(
 			radius - sqrt(categories * (2 * radius - categories))))
 		: 0;
 	return {
 		.categories = QRect(inner.x(), inner.y(), inner.width(), categories),
-		.list = inner.marginsRemoved({ 0, categories, 0, 0 }),
+		.list = list,
 		.radius = radius,
 		.expanding = expanding,
 		.finalBottom = height() - margins.bottom(),
@@ -651,7 +736,7 @@ void Selector::paintBubble(QPainter &p, int innerWidth) {
 	bubble.paint(
 		p,
 		_inner.x() + innerWidth - bubbleRight - bubble.width(),
-		_inner.y() + _inner.height() - _collapsedTopSkip,
+		_inner.y() + _inner.height() - _outer.y(),
 		width());
 }
 
@@ -804,6 +889,9 @@ void Selector::expand() {
 
 	base::call_delayed(kExpandDelay, this, [this] {
 		const auto full = kExpandDuration + kScaleDuration;
+		if (_about) {
+			_about->hide();
+		}
 		_expanded = true;
 		_paintBuffer = _cachedRound.PrepareImage(size());
 		_expanding.start([=] { update(); }, 0., full, full);
@@ -932,12 +1020,12 @@ bool AdjustMenuGeometryForSelector(
 	const auto maxWidth = menu->st().menu.widthMax + added;
 	const auto width = selector->countWidth(desiredWidth, maxWidth);
 	const auto margins = selector->marginsForShadow();
-	const auto categoriesTop = selector->useTransparency()
-		? selector->extendTopForCategories()
+	const auto categoriesAboutTop = selector->useTransparency()
+		? selector->extendTopForCategoriesAndAbout(width)
 		: 0;
 	menu->setForceWidth(width - added);
 	const auto height = menu->height();
-	const auto fullTop = margins.top() + categoriesTop + extend.top();
+	const auto fullTop = margins.top() + categoriesAboutTop + extend.top();
 	const auto minimalHeight = margins.top()
 		+ selector->minimalHeight()
 		+ margins.bottom();
@@ -1063,7 +1151,7 @@ AttachSelectorResult AttachSelectorToMenu(
 		QPoint desiredPosition,
 		not_null<HistoryItem*> item,
 		Fn<void(ChosenReaction)> chosen,
-		TextWithEntities description,
+		TextWithEntities about,
 		IconFactory iconFactory) {
 	const auto result = AttachSelectorToMenu(
 		menu,
@@ -1071,6 +1159,7 @@ AttachSelectorResult AttachSelectorToMenu(
 		st::reactPanelEmojiPan,
 		controller->uiShow(),
 		Data::LookupPossibleReactions(item),
+		std::move(about),
 		std::move(iconFactory));
 	if (!result) {
 		return result.error();
@@ -1103,6 +1192,7 @@ auto AttachSelectorToMenu(
 	const style::EmojiPan &st,
 	std::shared_ptr<ChatHelpers::Show> show,
 	const Data::PossibleItemReactionsRef &reactions,
+	TextWithEntities about,
 	IconFactory iconFactory)
 -> base::expected<not_null<Selector*>, AttachSelectorResult> {
 	if (reactions.recent.empty()) {
@@ -1114,6 +1204,7 @@ auto AttachSelectorToMenu(
 		st,
 		std::move(show),
 		std::move(reactions),
+		std::move(about),
 		std::move(iconFactory),
 		[=](bool fast) { menu->hideMenu(fast); },
 		false); // child

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

@@ -36,6 +36,7 @@ namespace Ui {
 class PopupMenu;
 class ScrollArea;
 class PlainShadow;
+class FlatLabel;
 } // namespace Ui
 
 namespace HistoryView::Reactions {
@@ -80,6 +81,7 @@ public:
 		const style::EmojiPan &st,
 		std::shared_ptr<ChatHelpers::Show> show,
 		const Data::PossibleItemReactionsRef &reactions,
+		TextWithEntities about,
 		IconFactory iconFactory,
 		Fn<void(bool fast)> close,
 		bool child = false);
@@ -91,12 +93,14 @@ public:
 		std::vector<DocumentId> recent,
 		Fn<void(bool fast)> close,
 		bool child = false);
+	~Selector();
 
 	[[nodiscard]] bool useTransparency() const;
 
 	int countWidth(int desiredWidth, int maxWidth);
 	[[nodiscard]] QMargins marginsForShadow() const;
 	[[nodiscard]] int extendTopForCategories() const;
+	[[nodiscard]] int extendTopForCategoriesAndAbout(int width) const;
 	[[nodiscard]] int minimalHeight() const;
 	[[nodiscard]] int countAppearedWidth(float64 progress) const;
 	void setSpecialExpandTopSkip(int skip);
@@ -137,6 +141,7 @@ private:
 		const Data::PossibleItemReactionsRef &reactions,
 		ChatHelpers::EmojiListMode mode,
 		std::vector<DocumentId> recent,
+		TextWithEntities about,
 		IconFactory iconFactory,
 		Fn<void(bool fast)> close,
 		bool child);
@@ -179,6 +184,8 @@ private:
 	Fn<void()> _jumpedToPremium;
 	Ui::RoundAreaWithShadow _cachedRound;
 	std::unique_ptr<Strip> _strip;
+	std::unique_ptr<Ui::FlatLabel> _about;
+	mutable int _aboutExtend = 0;
 
 	rpl::event_stream<ChosenReaction> _chosen;
 	rpl::event_stream<> _willExpand;
@@ -200,9 +207,11 @@ private:
 	QRect _outer;
 	QRect _outerWithBubble;
 	QImage _expandIconCache;
+	QImage _aboutCache;
 	QMargins _padding;
 	int _specialExpandTopSkip = 0;
 	int _collapsedTopSkip = 0;
+	int _topAddOnExpand = 0;
 	const int _size = 0;
 	int _recentRows = 0;
 	int _columns = 0;
@@ -243,7 +252,7 @@ AttachSelectorResult AttachSelectorToMenu(
 	QPoint desiredPosition,
 	not_null<HistoryItem*> item,
 	Fn<void(ChosenReaction)> chosen,
-	TextWithEntities description,
+	TextWithEntities about,
 	IconFactory iconFactory);
 
 [[nodiscard]] auto AttachSelectorToMenu(
@@ -252,6 +261,7 @@ AttachSelectorResult AttachSelectorToMenu(
 	const style::EmojiPan &st,
 	std::shared_ptr<ChatHelpers::Show> show,
 	const Data::PossibleItemReactionsRef &reactions,
+	TextWithEntities about,
 	IconFactory iconFactory
 ) -> base::expected<not_null<Selector*>, AttachSelectorResult>;
 

Telegram/SourceFiles/media/stories/media_stories_reactions.cpp

@@ -675,6 +675,9 @@ void Reactions::Panel::create() {
 		st::storiesReactionsPan,
 		_controller->uiShow(),
 		std::move(reactions),
+		TextWithEntities{ (mode == Mode::Message
+			? u"Send reaction as a private message"_q
+			: QString()) },
 		_controller->cachedReactionIconFactory().createMethod(),
 		[=](bool fast) { hide(mode); });
 
@@ -689,7 +692,8 @@ void Reactions::Panel::create() {
 	const auto maxWidth = desiredWidth * 2;
 	const auto width = _selector->countWidth(desiredWidth, maxWidth);
 	const auto margins = _selector->marginsForShadow();
-	const auto categoriesTop = _selector->extendTopForCategories();
+	const auto categoriesTop = _selector->extendTopForCategoriesAndAbout(
+		width);
 	const auto full = margins.left() + width + margins.right();
 
 	_shownValue = 0.;
@@ -874,6 +878,7 @@ auto Reactions::attachToMenu(
 		st::storiesReactionsPan,
 		show,
 		LookupPossibleReactions(&show->session()),
+		TextWithEntities(),
 		_controller->cachedReactionIconFactory().createMethod());
 	if (!result) {
 		return result.error();