Allow selecting custom filter icons.

Telegram/CMakeLists.txt

@@ -924,6 +924,8 @@ PRIVATE
     ui/empty_userpic.h
     ui/filter_icons.cpp
     ui/filter_icons.h
+    ui/filter_icon_panel.cpp
+    ui/filter_icon_panel.h
     ui/grouped_layout.cpp
     ui/grouped_layout.h
     ui/resize_area.h

Telegram/Resources/langs/lang.strings

@@ -2277,6 +2277,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 "lng_filters_type_no_archived" = "Archived";
 "lng_filters_type_no_muted" = "Muted";
 "lng_filters_type_no_read" = "Read";
+"lng_filters_icon_header" = "Choose icon";
 
 // Wnd specific
 

Telegram/SourceFiles/boxes/filters/edit_filter_box.cpp

@@ -12,10 +12,14 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "ui/text/text_utilities.h"
 #include "ui/widgets/buttons.h"
 #include "ui/widgets/input_fields.h"
+#include "ui/effects/panel_animation.h"
+#include "ui/filter_icons.h"
+#include "ui/filter_icon_panel.h"
 #include "data/data_chat_filters.h"
 #include "data/data_peer.h"
 #include "data/data_session.h"
 #include "settings/settings_common.h"
+#include "base/event_filter.h"
 #include "lang/lang_keys.h"
 #include "history/history.h"
 #include "main/main_session.h"
@@ -91,39 +95,42 @@ private:
 
 not_null<FilterChatsPreview*> SetupChatsPreview(
 		not_null<Ui::VerticalLayout*> content,
-		not_null<Data::ChatFilter*> data,
+		not_null<rpl::variable<Data::ChatFilter>*> data,
 		Flags flags,
 		ExceptionPeersGetter peers) {
+	const auto rules = data->current();
 	const auto preview = content->add(object_ptr<FilterChatsPreview>(
 		content,
-		data->flags() & flags,
+		rules.flags() & flags,
-		(data->*peers)()));
+		(rules.*peers)()));
 
 	preview->flagRemoved(
 	) | rpl::start_with_next([=](Flag flag) {
+		const auto rules = data->current();
 		*data = Data::ChatFilter(
-			data->id(),
+			rules.id(),
-			data->title(),
+			rules.title(),
-			data->iconEmoji(),
+			rules.iconEmoji(),
-			(data->flags() & ~flag),
+			(rules.flags() & ~flag),
-			data->always(),
+			rules.always(),
-			data->pinned(),
+			rules.pinned(),
-			data->never());
+			rules.never());
 	}, preview->lifetime());
 
 	preview->peerRemoved(
 	) | rpl::start_with_next([=](not_null<History*> history) {
-		auto always = data->always();
+		const auto rules = data->current();
-		auto pinned = data->pinned();
+		auto always = rules.always();
-		auto never = data->never();
+		auto pinned = rules.pinned();
+		auto never = rules.never();
 		always.remove(history);
 		pinned.erase(ranges::remove(pinned, history), end(pinned));
 		never.remove(history);
 		*data = Data::ChatFilter(
-			data->id(),
+			rules.id(),
-			data->title(),
+			rules.title(),
-			data->iconEmoji(),
+			rules.iconEmoji(),
-			data->flags(),
+			rules.flags(),
 			std::move(always),
 			std::move(pinned),
 			std::move(never));
@@ -261,21 +268,23 @@ void EditExceptions(
 		not_null<Window::SessionController*> window,
 		not_null<QObject*> context,
 		Flags options,
-		not_null<Data::ChatFilter*> data,
+		not_null<rpl::variable<Data::ChatFilter>*> data,
 		Fn<void()> refresh) {
 	const auto include = (options & Flag::Contacts) != Flags(0);
+	const auto rules = data->current();
 	auto controller = std::make_unique<EditFilterChatsListController>(
 		window,
 		(include
 			? tr::lng_filters_include_title()
 			: tr::lng_filters_exclude_title()),
 		options,
-		data->flags() & options,
+		rules.flags() & options,
-		include ? data->always() : data->never());
+		include ? rules.always() : rules.never());
 	const auto rawController = controller.get();
 	auto initBox = [=](not_null<PeerListBox*> box) {
 		box->addButton(tr::lng_settings_save(), crl::guard(context, [=] {
 			const auto peers = box->peerListCollectSelectedRows();
+			const auto rules = data->current();
 			auto &&histories = ranges::view::all(
 				peers
 			) | ranges::view::transform([=](not_null<PeerData*> peer) {
@@ -285,20 +294,22 @@ void EditExceptions(
 				histories.begin(),
 				histories.end()
 			};
-			auto removeFrom = include ? data->never() : data->always();
+			auto removeFrom = include ? rules.never() : rules.always();
 			for (const auto &history : changed) {
 				removeFrom.remove(history);
 			}
-			auto pinned = data->pinned();
+			auto pinned = rules.pinned();
-			pinned.erase(ranges::remove_if(pinned, [&](not_null<History*> history) {
+			pinned.erase(ranges::remove_if(pinned, [&](
+					not_null<History*> history) {
 				const auto contains = changed.contains(history);
 				return include ? !contains : contains;
 			}), end(pinned));
 			*data = Data::ChatFilter(
-				data->id(),
+				rules.id(),
-				data->title(),
+				rules.title(),
-				data->iconEmoji(),
+				rules.iconEmoji(),
-				(data->flags() & ~options) | rawController->chosenOptions(),
+				((rules.flags() & ~options)
+					| rawController->chosenOptions()),
 				include ? std::move(changed) : std::move(removeFrom),
 				std::move(pinned),
 				include ? std::move(removeFrom) : std::move(changed));
@@ -314,6 +325,94 @@ void EditExceptions(
 		Ui::LayerOption::KeepOther);
 }
 
+[[nodiscard]] void CreateIconSelector(
+		not_null<QWidget*> outer,
+		not_null<QWidget*> box,
+		not_null<QWidget*> parent,
+		not_null<Ui::InputField*> input,
+		not_null<rpl::variable<Data::ChatFilter>*> data) {
+	const auto rules = data->current();
+	const auto toggle = Ui::CreateChild<Ui::AbstractButton>(parent.get());
+	toggle->resize(st::windowFilterIconToggleSize);
+
+	const auto type = toggle->lifetime().make_state<Ui::FilterIcon>();
+	data->value(
+	) | rpl::map([=](const Data::ChatFilter &filter) {
+		return Ui::ComputeFilterIcon(filter);
+	}) | rpl::start_with_next([=](Ui::FilterIcon icon) {
+		*type = icon;
+		toggle->update();
+	}, toggle->lifetime());
+
+	input->geometryValue(
+	) | rpl::start_with_next([=](QRect geometry) {
+		const auto left = geometry.x() + geometry.width() - toggle->width();
+		const auto position = st::windowFilterIconTogglePosition;
+		toggle->move(
+			left - position.x(),
+			geometry.y() + position.y());
+	}, toggle->lifetime());
+
+	toggle->paintRequest(
+	) | rpl::start_with_next([=] {
+		auto p = QPainter(toggle);
+		const auto icons = Ui::LookupFilterIcon(*type);
+		icons.normal->paintInCenter(p, toggle->rect(), st::emojiIconFg->c);
+	}, toggle->lifetime());
+
+	const auto panel = toggle->lifetime().make_state<Ui::FilterIconPanel>(
+		outer);
+	toggle->installEventFilter(panel);
+	toggle->addClickHandler([=] {
+		panel->toggleAnimated();
+	});
+	panel->chosen(
+	) | rpl::filter([=](Ui::FilterIcon icon) {
+		return icon != Ui::ComputeFilterIcon(data->current());
+	}) | rpl::start_with_next([=](Ui::FilterIcon icon) {
+		panel->hideAnimated();
+		const auto rules = data->current();
+		*data = Data::ChatFilter(
+			rules.id(),
+			rules.title(),
+			Ui::LookupFilterIcon(icon).emoji,
+			rules.flags(),
+			rules.always(),
+			rules.pinned(),
+			rules.never());
+	}, panel->lifetime());
+
+	const auto updatePanelGeometry = [=] {
+		const auto global = toggle->mapToGlobal({
+			toggle->width(),
+			toggle->height()
+		});
+		const auto local = outer->mapFromGlobal(global);
+		const auto position = st::windwoFilterIconPanelPosition;
+		const auto padding = panel->innerPadding();
+		panel->move(
+			local.x() - panel->width() + position.x() + padding.right(),
+			local.y() + position.y() - padding.top());
+	};
+
+	const auto filterForGeometry = [=](not_null<QEvent*> event) {
+		const auto type = event->type();
+		if (type == QEvent::Move || type == QEvent::Resize) {
+			// updatePanelGeometry uses not only container geometry, but
+			// also container children geometries that will be updated later.
+			crl::on_main(panel, [=] { updatePanelGeometry(); });
+		}
+		return base::EventFilterResult::Continue;
+	};
+
+	const auto installFilterForGeometry = [&](not_null<QWidget*> target) {
+		panel->lifetime().make_state<base::unique_qptr<QObject>>(
+			base::install_event_filter(target, filterForGeometry));
+	};
+	installFilterForGeometry(outer);
+	installFilterForGeometry(box);
+}
+
 } // namespace
 
 void EditFilterBox(
@@ -323,18 +422,28 @@ void EditFilterBox(
 		Fn<void(const Data::ChatFilter &)> doneCallback) {
 	const auto creating = filter.title().isEmpty();
 	box->setTitle(creating ? tr::lng_filters_new() : tr::lng_filters_edit());
+	box->setCloseByOutsideClick(false);
+
+	using State = rpl::variable<Data::ChatFilter>;
+	const auto data = box->lifetime().make_state<State>(filter);
 
 	const auto content = box->verticalLayout();
 	const auto name = content->add(
 		object_ptr<Ui::InputField>(
 			box,
-			st::defaultInputField,
+			st::windowFilterNameInput,
 			tr::lng_filters_new_name(),
-			filter.title()),
+			data->current().title()),
 		st::markdownLinkFieldPadding);
 	name->setMaxLength(kMaxFilterTitleLength);
 
-	const auto data = box->lifetime().make_state<Data::ChatFilter>(filter);
+	const auto outer = box->getDelegate()->outerContainer();
+	CreateIconSelector(
+		outer,
+		box,
+		content,
+		name,
+		data);
 
 	constexpr auto kTypes = Flag::Contacts
 		| Flag::NonContacts
@@ -391,8 +500,12 @@ void EditFilterBox(
 		st::settingsDividerLabelPadding);
 
 	const auto refreshPreviews = [=] {
-		include->updateData(data->flags() & kTypes, data->always());
+		include->updateData(
-		exclude->updateData(data->flags() & kExcludeTypes, data->never());
+			data->current().flags() & kTypes,
+			data->current().always());
+		exclude->updateData(
+			data->current().flags() & kExcludeTypes,
+			data->current().never());
 	};
 	includeAdd->setClickedCallback([=] {
 		EditExceptions(window, box, kTypes, data, refreshPreviews);
@@ -403,26 +516,27 @@ void EditFilterBox(
 
 	const auto save = [=] {
 		const auto title = name->getLastText().trimmed();
+		const auto rules = data->current();
+		const auto result = Data::ChatFilter(
+			rules.id(),
+			title,
+			rules.iconEmoji(),
+			rules.flags(),
+			rules.always(),
+			rules.pinned(),
+			rules.never());
 		if (title.isEmpty()) {
 			name->showError();
 			return;
-		} else if (!(data->flags() & kTypes) && data->always().empty()) {
+		} else if (!(rules.flags() & kTypes) && rules.always().empty()) {
 			window->window().showToast(tr::lng_filters_empty(tr::now));
 			return;
-		} else if ((data->flags() == (kTypes | Flag::NoArchived))
+		} else if ((rules.flags() == (kTypes | Flag::NoArchived))
-			&& data->always().empty()
+			&& rules.always().empty()
-			&& data->never().empty()) {
+			&& rules.never().empty()) {
 			window->window().showToast(tr::lng_filters_default(tr::now));
 			return;
 		}
-		const auto result = Data::ChatFilter(
-			data->id(),
-			title,
-			data->iconEmoji(),
-			data->flags(),
-			data->always(),
-			data->pinned(),
-			data->never());
 		box->closeBox();
 
 		doneCallback(result);

Telegram/SourceFiles/data/data_chat_filters.cpp

@@ -128,7 +128,7 @@ MTPDialogFilter ChatFilter::tl(FilterId replaceId) const {
 		never.push_back(history->peer->input);
 	}
 	return MTP_dialogFilter(
-		MTP_flags(flags),
+		MTP_flags(flags | TLFlag::f_emoticon),
 		MTP_int(replaceId ? replaceId : _id),
 		MTP_string(_title),
 		MTP_string(_iconEmoji),
@@ -344,7 +344,8 @@ bool ChatFilters::applyChange(ChatFilter &filter, ChatFilter &&updated) {
 	const auto pinnedChanged = (filter.pinned() != updated.pinned());
 	if (!rulesChanged
 		&& !pinnedChanged
-		&& filter.title() == updated.title()) {
+		&& filter.title() == updated.title()
+		&& filter.iconEmoji() == updated.iconEmoji()) {
 		return false;
 	}
 	if (rulesChanged) {

Telegram/SourceFiles/data/data_chat_filters.h

@@ -75,6 +75,7 @@ private:
 
 inline bool operator==(const ChatFilter &a, const ChatFilter &b) {
 	return (a.title() == b.title())
+		&& (a.iconEmoji() == b.iconEmoji())
 		&& (a.flags() == b.flags())
 		&& (a.always() == b.always())
 		&& (a.never() == b.never());

Telegram/SourceFiles/ui/filter_icon_panel.cpp

@@ -0,0 +1,455 @@
+/*
+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
+*/
+#include "ui/filter_icon_panel.h"
+
+#include "ui/widgets/shadow.h"
+#include "ui/image/image_prepare.h"
+#include "ui/effects/panel_animation.h"
+#include "ui/ui_utility.h"
+#include "ui/filter_icons.h"
+#include "lang/lang_keys.h"
+#include "core/application.h"
+#include "app.h"
+#include "styles/style_chat_helpers.h"
+#include "styles/style_window.h"
+
+namespace Ui {
+namespace {
+
+constexpr auto kHideTimeoutMs = crl::time(300);
+constexpr auto kDelayedHideTimeoutMs = 3 * crl::time(1000);
+constexpr auto kIconsPerRow = 6;
+
+constexpr auto kIcons = std::array{
+	FilterIcon::Cat,
+	FilterIcon::Crown,
+	FilterIcon::Favorite,
+	FilterIcon::Flower,
+	FilterIcon::Game,
+	FilterIcon::Home,
+	FilterIcon::Love,
+	FilterIcon::Mask,
+	FilterIcon::Party,
+	FilterIcon::Sport,
+	FilterIcon::Study,
+	FilterIcon::Trade,
+	FilterIcon::Travel,
+	FilterIcon::Work,
+
+	FilterIcon::All,
+	FilterIcon::Unread,
+	FilterIcon::Unmuted,
+	FilterIcon::Bots,
+	FilterIcon::Channels,
+	FilterIcon::Groups,
+	FilterIcon::Private,
+	FilterIcon::Custom,
+	FilterIcon::Setup,
+};
+
+} // namespace
+
+FilterIconPanel::FilterIconPanel(QWidget *parent)
+: RpWidget(parent)
+, _inner(Ui::CreateChild<Ui::RpWidget>(this)) {
+	setup();
+}
+
+FilterIconPanel::~FilterIconPanel() {
+	hideFast();
+}
+
+rpl::producer<FilterIcon> FilterIconPanel::chosen() const {
+	return _chosen.events();
+}
+
+void FilterIconPanel::setup() {
+	setupInner();
+	resize(_inner->rect().marginsAdded(innerPadding()).size());
+	_inner->move(innerRect().topLeft());
+
+	_hideTimer.setCallback([=] { hideByTimerOrLeave(); });
+
+	macWindowDeactivateEvents(
+	) | rpl::filter([=] {
+		return !isHidden();
+	}) | rpl::start_with_next([=] {
+		hideAnimated();
+	}, lifetime());
+
+	setAttribute(Qt::WA_OpaquePaintEvent, false);
+
+	hideChildren();
+	hide();
+}
+
+void FilterIconPanel::setupInner() {
+	const auto count = kIcons.size();
+	const auto rows = (count / kIconsPerRow)
+		+ ((count % kIconsPerRow) ? 1 : 0);
+	const auto single = st::windowFilterIconSingle;
+	const auto size = QSize(
+		single.width() * kIconsPerRow,
+		single.height() * rows);
+	const auto full = QRect(QPoint(), size).marginsAdded(
+		st::windowFilterIconPadding).size();
+	_inner->resize(full);
+
+	_inner->paintRequest(
+		) | rpl::start_with_next([=](QRect clip) {
+		auto p = Painter(_inner);
+		App::roundRect(
+			p,
+			_inner->rect(),
+			st::emojiPanBg,
+			ImageRoundRadius::Small);
+		p.setFont(st::emojiPanHeaderFont);
+		p.setPen(st::emojiPanHeaderFg);
+		p.drawTextLeft(
+			st::windowFilterIconHeaderPosition.x(),
+			st::windowFilterIconHeaderPosition.y(),
+			_inner->width(),
+			tr::lng_filters_icon_header(tr::now));
+
+		const auto selected = (_pressed >= 0) ? _pressed : _selected;
+		for (auto i = 0; i != kIcons.size(); ++i) {
+			const auto rect = countRect(i);
+			if (!rect.intersects(clip)) {
+				continue;
+			}
+			if (i == selected) {
+				App::roundRect(
+					p,
+					rect,
+					st::emojiPanHover,
+					StickerHoverCorners);
+			}
+			const auto icon = LookupFilterIcon(kIcons[i]).normal;
+			icon->paintInCenter(p, rect, st::emojiIconFg->c);
+		}
+	}, _inner->lifetime());
+
+	_inner->setMouseTracking(true);
+	_inner->events(
+	) | rpl::start_with_next([=](not_null<QEvent*> e) {
+		switch (e->type()) {
+		case QEvent::Leave: setSelected(-1); break;
+		case QEvent::MouseMove:
+			mouseMove(static_cast<QMouseEvent*>(e.get())->pos());
+			break;
+		case QEvent::MouseButtonPress:
+			mousePress(static_cast<QMouseEvent*>(e.get())->button());
+			break;
+		case QEvent::MouseButtonRelease:
+			mouseRelease(static_cast<QMouseEvent*>(e.get())->button());
+			break;
+		}
+	}, _inner->lifetime());
+}
+
+void FilterIconPanel::setSelected(int selected) {
+	if (_selected == selected) {
+		return;
+	}
+	const auto was = (_selected >= 0);
+	updateRect(_selected);
+	_selected = selected;
+	updateRect(_selected);
+	const auto now = (_selected >= 0);
+	if (was != now) {
+		_inner->setCursor(now ? style::cur_pointer : style::cur_default);
+	}
+}
+
+void FilterIconPanel::setPressed(int pressed) {
+	if (_pressed == pressed) {
+		return;
+	}
+	updateRect(_pressed);
+	_pressed = pressed;
+	updateRect(_pressed);
+}
+
+QRect FilterIconPanel::countRect(int index) const {
+	Expects(index >= 0);
+
+	const auto row = index / kIconsPerRow;
+	const auto column = index % kIconsPerRow;
+	const auto single = st::windowFilterIconSingle;
+	const auto rect = QRect(
+		QPoint(column * single.width(), row * single.height()),
+		single);
+	const auto padding = st::windowFilterIconPadding;
+	return rect.translated(padding.left(), padding.top());
+}
+
+void FilterIconPanel::updateRect(int index) {
+	if (index < 0) {
+		return;
+	}
+	_inner->update(countRect(index));
+}
+
+void FilterIconPanel::mouseMove(QPoint position) {
+	const auto padding = st::windowFilterIconPadding;
+	if (!_inner->rect().marginsRemoved(padding).contains(position)) {
+		setSelected(-1);
+	} else {
+		const auto point = position - QPoint(padding.left(), padding.top());
+		const auto column = point.x() / st::windowFilterIconSingle.width();
+		const auto row = point.y() / st::windowFilterIconSingle.height();
+		const auto index = row * kIconsPerRow + column;
+		setSelected(index < kIcons.size() ? index : -1);
+	}
+}
+
+void FilterIconPanel::mousePress(Qt::MouseButton button) {
+	if (button != Qt::LeftButton) {
+		return;
+	}
+	setPressed(_selected);
+}
+
+void FilterIconPanel::mouseRelease(Qt::MouseButton button) {
+	if (button != Qt::LeftButton) {
+		return;
+	}
+	const auto pressed = _pressed;
+	setPressed(-1);
+	if (pressed == _selected && pressed >= 0) {
+		Assert(pressed < kIcons.size());
+		_chosen.fire_copy(kIcons[pressed]);
+	}
+}
+
+void FilterIconPanel::paintEvent(QPaintEvent *e) {
+	Painter p(this);
+
+	// This call can finish _a_show animation and destroy _showAnimation.
+	const auto opacityAnimating = _a_opacity.animating();
+
+	const auto showAnimating = _a_show.animating();
+	if (_showAnimation && !showAnimating) {
+		_showAnimation.reset();
+		if (!opacityAnimating) {
+			showChildren();
+		}
+	}
+
+	if (showAnimating) {
+		Assert(_showAnimation != nullptr);
+		if (auto opacity = _a_opacity.value(_hiding ? 0. : 1.)) {
+			_showAnimation->paintFrame(
+				p,
+				0,
+				0,
+				width(),
+				_a_show.value(1.),
+				opacity);
+		}
+	} else if (opacityAnimating) {
+		p.setOpacity(_a_opacity.value(_hiding ? 0. : 1.));
+		p.drawPixmap(0, 0, _cache);
+	} else if (_hiding || isHidden()) {
+		hideFinished();
+	} else {
+		if (!_cache.isNull()) _cache = QPixmap();
+		Ui::Shadow::paint(
+			p,
+			innerRect(),
+			width(),
+			st::emojiPanAnimation.shadow);
+	}
+}
+
+void FilterIconPanel::enterEventHook(QEvent *e) {
+	Core::App().registerLeaveSubscription(this);
+	showAnimated();
+}
+
+void FilterIconPanel::leaveEventHook(QEvent *e) {
+	Core::App().unregisterLeaveSubscription(this);
+	if (_a_show.animating() || _a_opacity.animating()) {
+		hideAnimated();
+	} else {
+		_hideTimer.callOnce(kHideTimeoutMs);
+	}
+	return TWidget::leaveEventHook(e);
+}
+
+void FilterIconPanel::otherEnter() {
+	showAnimated();
+}
+
+void FilterIconPanel::otherLeave() {
+	if (_a_opacity.animating()) {
+		hideByTimerOrLeave();
+	} else {
+		_hideTimer.callOnce(0);
+	}
+}
+
+void FilterIconPanel::hideFast() {
+	if (isHidden()) return;
+
+	_hideTimer.cancel();
+	_hiding = false;
+	_a_opacity.stop();
+	hideFinished();
+}
+
+void FilterIconPanel::opacityAnimationCallback() {
+	update();
+	if (!_a_opacity.animating()) {
+		if (_hiding) {
+			_hiding = false;
+			hideFinished();
+		} else if (!_a_show.animating()) {
+			showChildren();
+		}
+	}
+}
+
+void FilterIconPanel::hideByTimerOrLeave() {
+	if (isHidden()) {
+		return;
+	}
+
+	hideAnimated();
+}
+
+void FilterIconPanel::prepareCacheFor(bool hiding) {
+	if (_a_opacity.animating()) {
+		return;
+	}
+
+	auto showAnimation = base::take(_a_show);
+	auto showAnimationData = base::take(_showAnimation);
+	_hiding = false;
+	showChildren();
+
+	_cache = Ui::GrabWidget(this);
+
+	_a_show = base::take(showAnimation);
+	_showAnimation = base::take(showAnimationData);
+	_hiding = hiding;
+	if (_a_show.animating()) {
+		hideChildren();
+	}
+}
+
+void FilterIconPanel::startOpacityAnimation(bool hiding) {
+	prepareCacheFor(hiding);
+	hideChildren();
+	_a_opacity.start(
+		[=] { opacityAnimationCallback(); },
+		_hiding ? 1. : 0.,
+		_hiding ? 0. : 1.,
+		st::emojiPanDuration);
+}
+
+void FilterIconPanel::startShowAnimation() {
+	if (!_a_show.animating()) {
+		auto image = grabForAnimation();
+
+		_showAnimation = std::make_unique<Ui::PanelAnimation>(st::emojiPanAnimation, Ui::PanelAnimation::Origin::TopRight);
+		auto inner = rect().marginsRemoved(st::emojiPanMargins);
+		_showAnimation->setFinalImage(std::move(image), QRect(inner.topLeft() * cIntRetinaFactor(), inner.size() * cIntRetinaFactor()));
+		_showAnimation->setCornerMasks(Images::CornersMask(ImageRoundRadius::Small));
+		_showAnimation->start();
+	}
+	hideChildren();
+	_a_show.start([this] { update(); }, 0., 1., st::emojiPanShowDuration);
+}
+
+QImage FilterIconPanel::grabForAnimation() {
+	auto cache = base::take(_cache);
+	auto opacityAnimation = base::take(_a_opacity);
+	auto showAnimationData = base::take(_showAnimation);
+	auto showAnimation = base::take(_a_show);
+
+	showChildren();
+	Ui::SendPendingMoveResizeEvents(this);
+
+	auto result = QImage(
+		size() * cIntRetinaFactor(),
+		QImage::Format_ARGB32_Premultiplied);
+	result.setDevicePixelRatio(cRetinaFactor());
+	result.fill(Qt::transparent);
+	if (_inner) {
+		QPainter p(&result);
+		Ui::RenderWidget(p, _inner, _inner->pos());
+	}
+
+	_a_show = base::take(showAnimation);
+	_showAnimation = base::take(showAnimationData);
+	_a_opacity = base::take(opacityAnimation);
+	_cache = base::take(_cache);
+
+	return result;
+}
+
+void FilterIconPanel::hideAnimated() {
+	if (isHidden() || _hiding) {
+		return;
+	}
+
+	_hideTimer.cancel();
+	startOpacityAnimation(true);
+}
+
+void FilterIconPanel::toggleAnimated() {
+	if (isHidden() || _hiding || _hideAfterSlide) {
+		showAnimated();
+	} else {
+		hideAnimated();
+	}
+}
+
+void FilterIconPanel::hideFinished() {
+	hide();
+	_a_show.stop();
+	_showAnimation.reset();
+	_cache = QPixmap();
+	_hiding = false;
+}
+
+void FilterIconPanel::showAnimated() {
+	_hideTimer.cancel();
+	_hideAfterSlide = false;
+	showStarted();
+}
+
+void FilterIconPanel::showStarted() {
+	if (isHidden()) {
+		raise();
+		show();
+		startShowAnimation();
+	} else if (_hiding) {
+		startOpacityAnimation(false);
+	}
+}
+
+bool FilterIconPanel::eventFilter(QObject *obj, QEvent *e) {
+	if (e->type() == QEvent::Enter) {
+		otherEnter();
+	} else if (e->type() == QEvent::Leave) {
+		otherLeave();
+	}
+	return false;
+}
+
+style::margins FilterIconPanel::innerPadding() const {
+	return st::emojiPanMargins;
+}
+
+QRect FilterIconPanel::innerRect() const {
+	return rect().marginsRemoved(innerPadding());
+}
+
+} // namespace Ui

Telegram/SourceFiles/ui/filter_icon_panel.h

@@ -0,0 +1,87 @@
+/*
+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 "base/timer.h"
+#include "ui/rp_widget.h"
+#include "ui/effects/animations.h"
+
+namespace Ui {
+
+enum class FilterIcon : uchar;
+class PanelAnimation;
+
+class FilterIconPanel final : public Ui::RpWidget {
+public:
+	FilterIconPanel(QWidget *parent);
+	~FilterIconPanel();
+
+	void hideFast();
+	[[nodiscard]] bool hiding() const {
+		return _hiding || _hideTimer.isActive();
+	}
+
+	[[nodiscard]] style::margins innerPadding() const;
+
+	void showAnimated();
+	void hideAnimated();
+	void toggleAnimated();
+
+	[[nodiscard]] rpl::producer<FilterIcon> chosen() const;
+
+private:
+	void enterEventHook(QEvent *e) override;
+	void leaveEventHook(QEvent *e) override;
+	void otherEnter();
+	void otherLeave();
+
+	void paintEvent(QPaintEvent *e) override;
+	bool eventFilter(QObject *obj, QEvent *e) override;
+
+	void setup();
+	void setupInner();
+	void hideByTimerOrLeave();
+
+	// Rounded rect which has shadow around it.
+	[[nodiscard]] QRect innerRect() const;
+
+	[[nodiscard]] QImage grabForAnimation();
+	void startShowAnimation();
+	void startOpacityAnimation(bool hiding);
+	void prepareCacheFor(bool hiding);
+
+	void opacityAnimationCallback();
+
+	void hideFinished();
+	void showStarted();
+	void setSelected(int selected);
+	void setPressed(int pressed);
+	[[nodiscard]] QRect countRect(int index) const;
+	void updateRect(int index);
+	void mouseMove(QPoint position);
+	void mousePress(Qt::MouseButton button);
+	void mouseRelease(Qt::MouseButton button);
+
+	const not_null<Ui::RpWidget*> _inner;
+	rpl::event_stream<FilterIcon> _chosen;
+
+	int _selected = -1;
+	int _pressed = -1;
+
+	std::unique_ptr<Ui::PanelAnimation> _showAnimation;
+	Ui::Animations::Simple _a_show;
+
+	bool _hiding = false;
+	bool _hideAfterSlide = false;
+	QPixmap _cache;
+	Ui::Animations::Simple _a_opacity;
+	base::Timer _hideTimer;
+
+};
+
+} // namespace Ui

Telegram/SourceFiles/ui/filter_icons.cpp

@@ -8,6 +8,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "ui/filter_icons.h"
 
 #include "ui/emoji_config.h"
+#include "data/data_chat_filters.h"
 #include "styles/style_filter_icons.h"
 
 namespace Ui {
@@ -62,7 +63,7 @@ const auto kIcons = std::vector<FilterIcons>{
 	{
 		&st::foldersCat,
 		&st::foldersCatActive,
-		"\xF0\x9F\x90\x88"_cs.utf16()
+		"\xF0\x9F\x90\xB1"_cs.utf16()
 	},
 	{
 		&st::foldersCrown,
@@ -155,4 +156,43 @@ std::optional<FilterIcon> LookupFilterIconByEmoji(const QString &emoji) {
 	return (i != end(kMap)) ? std::make_optional(i->second) : std::nullopt;
 }
 
+FilterIcon ComputeDefaultFilterIcon(const Data::ChatFilter &filter) {
+	using Icon = FilterIcon;
+	using Flag = Data::ChatFilter::Flag;
+
+	const auto all = Flag::Contacts
+		| Flag::NonContacts
+		| Flag::Groups
+		| Flag::Channels
+		| Flag::Bots;
+	const auto removed = Flag::NoRead | Flag::NoMuted;
+	const auto people = Flag::Contacts | Flag::NonContacts;
+	const auto allNoArchive = all | Flag::NoArchived;
+	if (!filter.always().empty()
+		|| !filter.never().empty()
+		|| !(filter.flags() & all)) {
+		return Icon::Custom;
+	} else if ((filter.flags() & all) == Flag::Contacts
+		|| (filter.flags() & all) == Flag::NonContacts
+		|| (filter.flags() & all) == people) {
+		return Icon::Private;
+	} else if ((filter.flags() & all) == Flag::Groups) {
+		return Icon::Groups;
+	} else if ((filter.flags() & all) == Flag::Channels) {
+		return Icon::Channels;
+	} else if ((filter.flags() & all) == Flag::Bots) {
+		return Icon::Bots;
+	} else if ((filter.flags() & removed) == Flag::NoRead) {
+		return Icon::Unread;
+	} else if ((filter.flags() & removed) == Flag::NoMuted) {
+		return Icon::Unmuted;
+	}
+	return Icon::Custom;
+}
+
+FilterIcon ComputeFilterIcon(const Data::ChatFilter &filter) {
+	return LookupFilterIconByEmoji(filter.iconEmoji()).value_or(
+		ComputeDefaultFilterIcon(filter));
+}
+
 } // namespace Ui

Telegram/SourceFiles/ui/filter_icons.h

@@ -13,6 +13,10 @@ class Icon;
 } // namespace internal
 } // namespace style
 
+namespace Data {
+class ChatFilter;
+} // namespace Data
+
 namespace Ui {
 
 enum class FilterIcon : uchar {
@@ -52,4 +56,8 @@ struct FilterIcons {
 [[nodiscard]] std::optional<FilterIcon> LookupFilterIconByEmoji(
 	const QString &emoji);
 
+[[nodiscard]] FilterIcon ComputeDefaultFilterIcon(
+	const Data::ChatFilter &filter);
+[[nodiscard]] FilterIcon ComputeFilterIcon(const Data::ChatFilter &filter);
+
 } // namespace Ui

Telegram/SourceFiles/window/window.style

@@ -284,6 +284,15 @@ windowFilterSmallList: PeerList(defaultPeerList) {
 windowFilterSmallRemove: IconButton(notifyClose) {
 }
 windowFilterSmallRemoveRight: 10px;
+windowFilterNameInput: InputField(defaultInputField) {
+	textMargins: margins(0px, 26px, 36px, 4px);
+}
+windowFilterIconToggleSize: size(36px, 36px);
+windowFilterIconTogglePosition: point(-4px, 12px);
+windwoFilterIconPanelPosition: point(-2px, -1px);
+windowFilterIconSingle: size(44px, 42px);
+windowFilterIconPadding: margins(10px, 36px, 10px, 8px);
+windowFilterIconHeaderPosition: point(18px, 14px);
 windowFilterTypeContacts: icon {{ "filters_type_contacts", historyPeerUserpicFg }};
 windowFilterTypeNonContacts: icon {{ "filters_type_noncontacts", historyPeerUserpicFg }};
 windowFilterTypeGroups: icon {{ "filters_type_groups", historyPeerUserpicFg }};

Telegram/SourceFiles/window/window_filters_menu.cpp

@@ -24,39 +24,6 @@ namespace {
 
 using Icon = Ui::FilterIcon;
 
-[[nodiscard]] Icon ComputeIcon(const Data::ChatFilter &filter) {
-	using Flag = Data::ChatFilter::Flag;
-
-	const auto all = Flag::Contacts
-		| Flag::NonContacts
-		| Flag::Groups
-		| Flag::Channels
-		| Flag::Bots;
-	const auto removed = Flag::NoRead | Flag::NoMuted;
-	const auto people = Flag::Contacts | Flag::NonContacts;
-	const auto allNoArchive = all | Flag::NoArchived;
-	if (!filter.always().empty()
-		|| !filter.never().empty()
-		|| !(filter.flags() & all)) {
-		return Icon::Custom;
-	} else if ((filter.flags() & all) == Flag::Contacts
-		|| (filter.flags() & all) == Flag::NonContacts
-		|| (filter.flags() & all) == people) {
-		return Icon::Private;
-	} else if ((filter.flags() & all) == Flag::Groups) {
-		return Icon::Groups;
-	} else if ((filter.flags() & all) == Flag::Channels) {
-		return Icon::Channels;
-	} else if ((filter.flags() & all) == Flag::Bots) {
-		return Icon::Bots;
-	} else if ((filter.flags() & removed) == Flag::NoRead) {
-		return Icon::Unread;
-	} else if ((filter.flags() & removed) == Flag::NoMuted) {
-		return Icon::Unmuted;
-	}
-	return Icon::Custom;
-}
-
 } // namespace
 
 FiltersMenu::FiltersMenu(
@@ -187,7 +154,7 @@ void FiltersMenu::refresh() {
 		prepare(
 			filter.id(),
 			filter.title(),
-			ComputeIcon(filter),
+			Ui::ComputeFilterIcon(filter),
 			QString());
 	}
 	prepare(-1, tr::lng_filters_setup(tr::now), Icon::Setup, {});