Use new animations engine everywhere.

2025-04-25 21:01:10 +00:00 · 2019-04-02 13:13:30 +04:00 · 2019-04-02 13:13:30 +04:00 · 99bb09374d
commit 99bb09374d
parent a6e96f9a28
162 changed files with 753 additions and 826 deletions
--- a/Telegram/SourceFiles/boxes/background_preview_box.cpp
+++ b/Telegram/SourceFiles/boxes/background_preview_box.cpp
@ -39,8 +39,7 @@ public:
 		Painter &p,
 		int left,
 		int top,
-		int outerWidth,
-		crl::time ms) override;
+		int outerWidth) override;
 	QImage prepareRippleMask() const override;
 	bool checkRippleStartPosition(QPoint position) const override;

@ -241,14 +240,13 @@ void ServiceCheck::paint(
 		Painter &p,
 		int left,
 		int top,
-		int outerWidth,
-		crl::time ms) {
+		int outerWidth) {
 	Frames().paintFrame(
 		p,
 		left + _st.margin.left(),
 		top + _st.margin.top(),
 		&_st,
-		currentAnimationValue(ms));
+		currentAnimationValue());
 }

 QImage ServiceCheck::prepareRippleMask() const {
@ -507,20 +505,20 @@ void BackgroundPreviewBox::paintEvent(QPaintEvent *e) {
 	}
 	if (!color || _paper.isPattern()) {
 		if (!_scaled.isNull() || setScaledFromThumb()) {
-			paintImage(p, ms);
-			paintRadial(p, ms);
+			paintImage(p);
+			paintRadial(p);
 		} else if (!color) {
 			p.fillRect(e->rect(), st::boxBg);
 			return;
 		} else {
 			// Progress of pattern loading.
-			paintRadial(p, ms);
+			paintRadial(p);
 		}
 	}
 	paintTexts(p, ms);
 }

-void BackgroundPreviewBox::paintImage(Painter &p, crl::time ms) {
+void BackgroundPreviewBox::paintImage(Painter &p) {
 	Expects(!_scaled.isNull());

 	const auto master = _paper.isPattern()
@ -536,7 +534,7 @@ void BackgroundPreviewBox::paintImage(Painter &p, crl::time ms) {
 		height() * factor);
 	const auto guard = gsl::finally([&] { p.setOpacity(1.); });

-	const auto fade = _fadeIn.current(ms, 1.);
+	const auto fade = _fadeIn.value(1.);
 	if (fade < 1. && !_fadeOutThumbnail.isNull()) {
 		p.drawPixmap(rect(), _fadeOutThumbnail, from);
 	}
@ -548,7 +546,7 @@ void BackgroundPreviewBox::paintImage(Painter &p, crl::time ms) {
 	checkBlurAnimationStart();
 }

-void BackgroundPreviewBox::paintRadial(Painter &p, crl::time ms) {
+void BackgroundPreviewBox::paintRadial(Painter &p) {
 	const auto radial = _radial.animating();
 	const auto radialOpacity = radial ? _radial.opacity() : 0.;
 	if (!radial) {
--- a/Telegram/SourceFiles/boxes/background_preview_box.h
+++ b/Telegram/SourceFiles/boxes/background_preview_box.h
@ -12,6 +12,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "window/themes/window_theme.h"
 #include "history/admin_log/history_admin_log_item.h"
 #include "history/view/history_view_element.h"
+#include "ui/effects/animations.h"
 #include "ui/effects/radial_animation.h"

 namespace Ui {
@ -58,8 +59,8 @@ private:
 	void setScaledFromImage(QImage &&image, QImage &&blurred);
 	void updateServiceBg(std::optional<QColor> background);
 	std::optional<QColor> patternBackgroundColor() const;
-	void paintImage(Painter &p, crl::time ms);
-	void paintRadial(Painter &p, crl::time ms);
+	void paintImage(Painter &p);
+	void paintRadial(Painter &p);
 	void paintTexts(Painter &p, crl::time ms);
 	void paintDate(Painter &p);
 	void createBlurCheckbox();
@ -72,7 +73,7 @@ private:
 	Data::WallPaper _paper;
 	QImage _full;
 	QPixmap _scaled, _blurred, _fadeOutThumbnail;
-	Animation _fadeIn;
+	Ui::Animations::Simple _fadeIn;
 	Ui::RadialAnimation _radial;
 	base::binary_guard _generating;
 	std::optional<QColor> _serviceBg;
--- a/Telegram/SourceFiles/boxes/calendar_box.cpp
+++ b/Telegram/SourceFiles/boxes/calendar_box.cpp
@ -320,7 +320,7 @@ void CalendarBox::Inner::paintRows(Painter &p, QRect clip) {
 					}
 					return st::windowBgOver;
 				};
-				it->second->paint(p, innerLeft, innerTop, width(), ms, &(colorOverride()->c));
+				it->second->paint(p, innerLeft, innerTop, width(), &(colorOverride()->c));
 				if (it->second->empty()) {
 					_ripples.erase(it);
 				}
--- a/Telegram/SourceFiles/boxes/connection_box.cpp
+++ b/Telegram/SourceFiles/boxes/connection_box.cpp
@ -20,6 +20,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "ui/wrap/slide_wrap.h"
 #include "ui/wrap/vertical_layout.h"
 #include "ui/toast/toast.h"
+#include "ui/effects/animations.h"
 #include "ui/effects/radial_animation.h"
 #include "ui/text_options.h"
 #include "styles/style_boxes.h"
@ -53,7 +54,7 @@ private:
 	void setupControls(View &&view);
 	int countAvailableWidth() const;
 	void radialAnimationCallback();
-	void paintCheck(Painter &p, crl::time ms);
+	void paintCheck(Painter &p);
 	void showMenu();

 	View _view;
@ -67,8 +68,8 @@ private:
 	base::unique_qptr<Ui::DropdownMenu> _menu;

 	bool _set = false;
-	Animation _toggled;
-	Animation _setAnimation;
+	Ui::Animations::Simple _toggled;
+	Ui::Animations::Simple _setAnimation;
 	std::unique_ptr<Ui::InfiniteRadialAnimation> _progress;
 	std::unique_ptr<Ui::InfiniteRadialAnimation> _checking;

@ -180,8 +181,8 @@ rpl::producer<> ProxyRow::shareClicks() const {

 void ProxyRow::setupControls(View &&view) {
 	updateFields(std::move(view));
-	_toggled.finish();
-	_setAnimation.finish();
+	_toggled.stop();
+	_setAnimation.stop();

 	_menuToggle->addClickHandler([=] { showMenu(); });
 }
@ -268,9 +269,8 @@ int ProxyRow::resizeGetHeight(int newWidth) {
 void ProxyRow::paintEvent(QPaintEvent *e) {
 	Painter p(this);

-	const auto ms = crl::now();
 	if (!_view.deleted) {
-		paintRipple(p, 0, 0, ms);
+		paintRipple(p, 0, 0);
 	}

 	const auto left = _skipLeft;
@ -281,7 +281,7 @@ void ProxyRow::paintEvent(QPaintEvent *e) {
 		p.setOpacity(st::stickersRowDisabledOpacity);
 	}

-	paintCheck(p, ms);
+	paintCheck(p);

 	p.setPen(st::proxyRowTitleFg);
 	p.setFont(st::semiboldFont);
@ -338,14 +338,14 @@ void ProxyRow::paintEvent(QPaintEvent *e) {
 	top += st::normalFont->height + st::proxyRowPadding.bottom();
 }

-void ProxyRow::paintCheck(Painter &p, crl::time ms) {
+void ProxyRow::paintCheck(Painter &p) {
 	const auto loading = _progress
 		? _progress->computeState()
 		: Ui::RadialState{ 0., 0, FullArcLength };
-	const auto toggled = _toggled.current(ms, _view.selected ? 1. : 0.)
+	const auto toggled = _toggled.value(_view.selected ? 1. : 0.)
 		* (1. - loading.shown);
 	const auto _st = &st::defaultRadio;
-	const auto set = _setAnimation.current(ms, _set ? 1. : 0.);
+	const auto set = _setAnimation.value(_set ? 1. : 0.);

 	PainterHighQualityEnabler hq(p);

--- a/Telegram/SourceFiles/boxes/edit_color_box.cpp
+++ b/Telegram/SourceFiles/boxes/edit_color_box.cpp
@ -442,7 +442,7 @@ public:

 protected:
 	void correctValue(const QString &was, int wasCursor, QString &now, int &nowCursor) override;
-	void paintAdditionalPlaceholder(Painter &p, crl::time ms) override;
+	void paintAdditionalPlaceholder(Painter &p) override;

 	void wheelEvent(QWheelEvent *e) override;
 	void keyPressEvent(QKeyEvent *e) override;
@ -501,7 +501,7 @@ void EditColorBox::Field::correctValue(const QString &was, int wasCursor, QStrin
 	}
 }

-void EditColorBox::Field::paintAdditionalPlaceholder(Painter &p, crl::time ms) {
+void EditColorBox::Field::paintAdditionalPlaceholder(Painter &p) {
 	p.setFont(_st.font);
 	p.setPen(_st.placeholderFg);
 	auto inner = QRect(_st.textMargins.right(), _st.textMargins.top(), width() - 2 * _st.textMargins.right(), height() - _st.textMargins.top() - _st.textMargins.bottom());
@ -565,7 +565,7 @@ public:

 protected:
 	void correctValue(const QString &was, int wasCursor, QString &now, int &nowCursor) override;
-	void paintAdditionalPlaceholder(Painter &p, crl::time ms) override;
+	void paintAdditionalPlaceholder(Painter &p) override;

 };

@ -606,7 +606,7 @@ void EditColorBox::ResultField::correctValue(const QString &was, int wasCursor,
 	}
 }

-void EditColorBox::ResultField::paintAdditionalPlaceholder(Painter &p, crl::time ms) {
+void EditColorBox::ResultField::paintAdditionalPlaceholder(Painter &p) {
 	p.setFont(_st.font);
 	p.setPen(_st.placeholderFg);
 	p.drawText(QRect(_st.textMargins.right(), _st.textMargins.top(), width(), height() - _st.textMargins.top() - _st.textMargins.bottom()), "#", style::al_topleft);
--- a/Telegram/SourceFiles/boxes/language_box.cpp
+++ b/Telegram/SourceFiles/boxes/language_box.cpp
@ -772,7 +772,6 @@ int Rows::countAvailableWidth() const {
 void Rows::paintEvent(QPaintEvent *e) {
 	Painter p(this);

-	const auto ms = crl::now();
 	const auto clip = e->rect();

 	const auto checkLeft = st::passportRowPadding.left();
@ -801,14 +800,14 @@ void Rows::paintEvent(QPaintEvent *e) {
 		}

 		if (row.ripple) {
-			row.ripple->paint(p, 0, 0, width(), ms);
+			row.ripple->paint(p, 0, 0, width());
 			if (row.ripple->empty()) {
 				row.ripple.reset();
 			}
 		}

 		const auto checkTop = (row.height - st::defaultRadio.diameter) / 2;
-		row.check->paint(p, checkLeft, checkTop, width(), ms);
+		row.check->paint(p, checkLeft, checkTop, width());

 		auto top = st::passportRowPadding.top();

@ -829,7 +828,7 @@ void Rows::paintEvent(QPaintEvent *e) {
 				p.drawEllipse(menu);
 			}
 			if (row.menuToggleRipple) {
-				row.menuToggleRipple->paint(p, menu.x(), menu.y(), width(), ms);
+				row.menuToggleRipple->paint(p, menu.x(), menu.y(), width());
 				if (row.menuToggleRipple->empty()) {
 					row.menuToggleRipple.reset();
 				}
--- a/Telegram/SourceFiles/boxes/peer_list_box.cpp
+++ b/Telegram/SourceFiles/boxes/peer_list_box.cpp
@ -457,9 +457,9 @@ void PeerListRow::stopLastRipple() {
 	}
 }

-void PeerListRow::paintRipple(Painter &p, crl::time ms, int x, int y, int outerWidth) {
+void PeerListRow::paintRipple(Painter &p, int x, int y, int outerWidth) {
 	if (_ripple) {
-		_ripple->paint(p, x, y, outerWidth, ms);
+		_ripple->paint(p, x, y, outerWidth);
 		if (_ripple->empty()) {
 			_ripple.reset();
 		}
@ -469,14 +469,13 @@ void PeerListRow::paintRipple(Painter &p, crl::time ms, int x, int y, int outerW
 void PeerListRow::paintUserpic(
 		Painter &p,
 		const style::PeerListItem &st,
-		crl::time ms,
 		int x,
 		int y,
 		int outerWidth) {
 	if (_disabledState == State::DisabledChecked) {
 		paintDisabledCheckUserpic(p, st, x, y, outerWidth);
 	} else if (_checkbox) {
-		_checkbox->paint(p, ms, x, y, outerWidth);
+		_checkbox->paint(p, x, y, outerWidth);
 	} else if (_isSavedMessagesChat) {
 		Ui::EmptyUserpic::PaintSavedMessages(p, x, y, outerWidth, st.photoSize);
 	} else {
@ -1099,11 +1098,10 @@ crl::time PeerListContent::paintRow(Painter &p, crl::time ms, RowIndex index) {
 		? _st.item.button.textBgOver
 		: _st.item.button.textBg;
 	p.fillRect(0, 0, width(), _rowHeight, bg);
-	row->paintRipple(p, ms, 0, 0, width());
+	row->paintRipple(p, 0, 0, width());
 	row->paintUserpic(
 		p,
 		_st.item,
-		ms,
 		_st.item.photoPosition.x(),
 		_st.item.photoPosition.y(),
 		width());
@ -1143,7 +1141,6 @@ crl::time PeerListContent::paintRow(Painter &p, crl::time ms, RowIndex index) {
 		auto actionTop = actionMargins.top();
 		row->paintAction(
 			p,
-			ms,
 			actionLeft,
 			actionTop,
 			width(),
--- a/Telegram/SourceFiles/boxes/peer_list_box.h
+++ b/Telegram/SourceFiles/boxes/peer_list_box.h
@ -92,7 +92,6 @@ public:
 	}
 	virtual void paintAction(
 		Painter &p,
-		crl::time ms,
 		int x,
 		int y,
 		int outerWidth,
@ -158,11 +157,10 @@ public:
 		QPoint point,
 		UpdateCallback updateCallback);
 	void stopLastRipple();
-	void paintRipple(Painter &p, crl::time ms, int x, int y, int outerWidth);
+	void paintRipple(Painter &p, int x, int y, int outerWidth);
 	void paintUserpic(
 		Painter &p,
 		const style::PeerListItem &st,
-		crl::time ms,
 		int x,
 		int y,
 		int outerWidth);
--- a/Telegram/SourceFiles/boxes/peer_list_controllers.cpp
+++ b/Telegram/SourceFiles/boxes/peer_list_controllers.cpp
@ -122,7 +122,6 @@ QMargins PeerListRowWithLink::actionMargins() const {

 void PeerListRowWithLink::paintAction(
 		Painter &p,
-		crl::time ms,
 		int x,
 		int y,
 		int outerWidth,
--- a/Telegram/SourceFiles/boxes/peer_list_controllers.h
+++ b/Telegram/SourceFiles/boxes/peer_list_controllers.h
@ -42,7 +42,6 @@ private:
 	QMargins actionMargins() const override;
 	void paintAction(
 		Painter &p,
-		crl::time ms,
 		int x,
 		int y,
 		int outerWidth,
--- a/Telegram/SourceFiles/boxes/send_files_box.cpp
+++ b/Telegram/SourceFiles/boxes/send_files_box.cpp
@ -18,6 +18,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "core/file_utilities.h"
 #include "core/mime_type.h"
 #include "core/event_filter.h"
+#include "ui/effects/animations.h"
 #include "ui/widgets/checkbox.h"
 #include "ui/widgets/buttons.h"
 #include "ui/widgets/input_fields.h"
@ -122,8 +123,7 @@ public:
 		int left,
 		int top,
 		float64 shrinkProgress,
-		float64 moveProgress,
-		crl::time ms);
+		float64 moveProgress);
 	void paintPhoto(Painter &p, int left, int top, int outerWidth);
 	void paintFile(Painter &p, int left, int top, int outerWidth);

@ -157,7 +157,7 @@ private:
 	int _statusWidth = 0;
 	bool _isVideo = false;
 	float64 _suggestedMove = 0.;
-	Animation _suggestedMoveAnimation;
+	Ui::Animations::Simple _suggestedMoveAnimation;
 	int _lastShrinkValue = 0;

 };
@ -290,10 +290,8 @@ void AlbumThumb::paintInAlbum(
 		int left,
 		int top,
 		float64 shrinkProgress,
-		float64 moveProgress,
-		crl::time ms) {
+		float64 moveProgress) {
 	const auto shrink = anim::interpolate(0, _shrinkSize, shrinkProgress);
-	_suggestedMoveAnimation.step(ms);
 	_lastShrinkValue = shrink;
 	const auto geometry = countCurrentGeometry(moveProgress);
 	const auto x = left + geometry.x();
@ -540,7 +538,7 @@ void AlbumThumb::suggestMove(float64 delta, Fn<void()> callback) {

 QRect AlbumThumb::countRealGeometry() const {
 	const auto addLeft = int(std::round(
-		_suggestedMoveAnimation.current(_suggestedMove) * _lastShrinkValue));
+		_suggestedMoveAnimation.value(_suggestedMove) * _lastShrinkValue));
 	const auto current = _layout.geometry;
 	const auto realTopLeft = current.topLeft()
 		+ _albumPosition
@ -562,7 +560,7 @@ QRect AlbumThumb::countCurrentGeometry(float64 progress) const {
 }

 void AlbumThumb::finishAnimations() {
-	_suggestedMoveAnimation.finish();
+	_suggestedMoveAnimation.stop();
 }

 SingleMediaPreview *SingleMediaPreview::Create(
@ -961,9 +959,9 @@ private:
 	AlbumThumb *_paintedAbove = nullptr;
 	QPoint _draggedStartPosition;

-	mutable Animation _thumbsHeightAnimation;
-	mutable Animation _shrinkAnimation;
-	mutable Animation _finishDragAnimation;
+	mutable Ui::Animations::Simple _thumbsHeightAnimation;
+	mutable Ui::Animations::Simple _shrinkAnimation;
+	mutable Ui::Animations::Simple _finishDragAnimation;

 };

@ -1087,9 +1085,9 @@ int SendFilesBox::AlbumPreview::orderIndex(
 }

 void SendFilesBox::AlbumPreview::cancelDrag() {
-	_thumbsHeightAnimation.finish();
-	_finishDragAnimation.finish();
-	_shrinkAnimation.finish();
+	_thumbsHeightAnimation.stop();
+	_finishDragAnimation.stop();
+	_shrinkAnimation.stop();
 	if (_draggedThumb) {
 		_draggedThumb->moveInAlbum({ 0, 0 });
 		_draggedThumb = nullptr;
@ -1164,7 +1162,7 @@ void SendFilesBox::AlbumPreview::updateSize() {
 	const auto newHeight = [&] {
 		switch (_sendWay) {
 		case SendFilesWay::Album:
-			return int(std::round(_thumbsHeightAnimation.current(
+			return int(std::round(_thumbsHeightAnimation.value(
 				_thumbsHeight)));
 		case SendFilesWay::Photos: return _photosHeight;
 		case SendFilesWay::Files: return _filesHeight;
@ -1187,20 +1185,17 @@ void SendFilesBox::AlbumPreview::paintEvent(QPaintEvent *e) {
 }

 void SendFilesBox::AlbumPreview::paintAlbum(Painter &p) const {
-	const auto ms = crl::now();
-	const auto shrink = _shrinkAnimation.current(
-		ms,
-		_draggedThumb ? 1. : 0.);
-	const auto moveProgress = _finishDragAnimation.current(ms, 1.);
+	const auto shrink = _shrinkAnimation.value(_draggedThumb ? 1. : 0.);
+	const auto moveProgress = _finishDragAnimation.value(1.);
 	const auto left = contentLeft();
 	const auto top = contentTop();
 	for (const auto &thumb : _thumbs) {
 		if (thumb.get() != _paintedAbove) {
-			thumb->paintInAlbum(p, left, top, shrink, moveProgress, ms);
+			thumb->paintInAlbum(p, left, top, shrink, moveProgress);
 		}
 	}
 	if (_paintedAbove) {
-		_paintedAbove->paintInAlbum(p, left, top, shrink, moveProgress, ms);
+		_paintedAbove->paintInAlbum(p, left, top, shrink, moveProgress);
 	}
 }

--- a/Telegram/SourceFiles/boxes/share_box.cpp
+++ b/Telegram/SourceFiles/boxes/share_box.cpp
@ -85,7 +85,7 @@ private:
 		PeerData *peer;
 		Ui::RoundImageCheckbox checkbox;
 		Text name;
-		Animation nameActive;
+		Ui::Animations::Simple nameActive;
 	};

 	void notifyPeerUpdated(const Notify::PeerUpdate &update);
@ -93,7 +93,7 @@ private:

 	int displayedChatsCount() const;

-	void paintChat(Painter &p, crl::time ms, not_null<Chat*> chat, int index);
+	void paintChat(Painter &p, not_null<Chat*> chat, int index);
 	void updateChat(not_null<PeerData*> peer);
 	void updateChatName(not_null<Chat*> chat, not_null<PeerData*> peer);
 	void repaintChat(not_null<PeerData*> peer);
@ -732,7 +732,6 @@ void ShareBox::Inner::setActive(int active) {

 void ShareBox::Inner::paintChat(
 		Painter &p,
-		crl::time ms,
 		not_null<Chat*> chat,
 		int index) {
 	auto x = _rowsLeft + qFloor((index % _columnCount) * _rowWidthReal);
@ -741,9 +740,9 @@ void ShareBox::Inner::paintChat(
 	auto outerWidth = width();
 	auto photoLeft = (_rowWidth - (st::sharePhotoCheckbox.imageRadius * 2)) / 2;
 	auto photoTop = st::sharePhotoTop;
-	chat->checkbox.paint(p, ms, x + photoLeft, y + photoTop, outerWidth);
+	chat->checkbox.paint(p, x + photoLeft, y + photoTop, outerWidth);

-	auto nameActive = chat->nameActive.current(ms, (index == _active) ? 1. : 0.);
+	auto nameActive = chat->nameActive.value((index == _active) ? 1. : 0.);
 	p.setPen(anim::pen(st::shareNameFg, st::shareNameActiveFg, nameActive));

 	auto nameWidth = (_rowWidth - st::shareColumnSkip);
@ -761,7 +760,6 @@ ShareBox::Inner::Chat::Chat(PeerData *peer, Fn<void()> updateCallback)
 void ShareBox::Inner::paintEvent(QPaintEvent *e) {
 	Painter p(this);

-	auto ms = crl::now();
 	auto r = e->rect();
 	p.setClipRect(r);
 	p.fillRect(r, st::boxBg);
@ -777,7 +775,7 @@ void ShareBox::Inner::paintEvent(QPaintEvent *e) {
 				if (indexFrom >= indexTo) {
 					break;
 				}
-				paintChat(p, ms, getChat(*i), indexFrom);
+				paintChat(p, getChat(*i), indexFrom);
 				++indexFrom;
 			}
 		} else {
@ -806,7 +804,7 @@ void ShareBox::Inner::paintEvent(QPaintEvent *e) {
 					if (indexFrom >= _filtered.size()) {
 						break;
 					}
-					paintChat(p, ms, getChat(_filtered[indexFrom]), indexFrom);
+					paintChat(p, getChat(_filtered[indexFrom]), indexFrom);
 					++indexFrom;
 				}
 				indexFrom -= filteredSize;
@ -820,7 +818,6 @@ void ShareBox::Inner::paintEvent(QPaintEvent *e) {
 					}
 					paintChat(
 						p,
-						ms,
 						d_byUsernameFiltered[indexFrom].get(),
 						filteredSize + indexFrom);
 					++indexFrom;
--- a/Telegram/SourceFiles/boxes/share_box.h
+++ b/Telegram/SourceFiles/boxes/share_box.h
@ -10,6 +10,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "boxes/abstract_box.h"
 #include "base/observer.h"
 #include "base/timer.h"
+#include "ui/effects/animations.h"
 #include "ui/effects/round_checkbox.h"

 namespace Dialogs {
@ -99,6 +100,6 @@ private:
 	using PeopleQueries = QMap<mtpRequestId, QString>;
 	PeopleQueries _peopleQueries;

-	Animation _scrollAnimation;
+	Ui::Animations::Simple _scrollAnimation;

 };
--- a/Telegram/SourceFiles/boxes/sticker_set_box.cpp
+++ b/Telegram/SourceFiles/boxes/sticker_set_box.cpp
@ -73,7 +73,7 @@ private:

 	void showPreview();

-	std::vector<Animation> _packOvers;
+	std::vector<Ui::Animations::Simple> _packOvers;
 	Stickers::Pack _pack;
 	Stickers::ByEmojiMap _emoji;
 	bool _loaded = false;
@ -460,7 +460,6 @@ void StickerSetBox::Inner::paintEvent(QPaintEvent *e) {

 	if (_pack.isEmpty()) return;

-	auto ms = crl::now();
 	int32 rows = _pack.size() / kStickersPanelPerRow + ((_pack.size() % kStickersPanelPerRow) ? 1 : 0);
 	int32 from = qFloor(e->rect().top() / st::stickersSize.height()), to = qFloor(e->rect().bottom() / st::stickersSize.height()) + 1;

@ -473,7 +472,7 @@ void StickerSetBox::Inner::paintEvent(QPaintEvent *e) {
 			DocumentData *doc = _pack.at(index);
 			QPoint pos(st::stickersPadding.left() + j * st::stickersSize.width(), st::stickersPadding.top() + i * st::stickersSize.height());

-			if (auto over = _packOvers[index].current(ms, (index == _selected) ? 1. : 0.)) {
+			if (auto over = _packOvers[index].value((index == _selected) ? 1. : 0.)) {
 				p.setOpacity(over);
 				QPoint tl(pos);
 				if (rtl()) tl.setX(width() - tl.x() - st::stickersSize.width());
--- a/Telegram/SourceFiles/boxes/stickers_box.cpp
+++ b/Telegram/SourceFiles/boxes/stickers_box.cpp
@ -384,7 +384,7 @@ void StickersBox::paintEvent(QPaintEvent *e) {
 	Painter p(this);

 	if (_slideAnimation) {
-		_slideAnimation->paintFrame(p, 0, getTopSkip(), width(), crl::now());
+		_slideAnimation->paintFrame(p, 0, getTopSkip(), width());
 		if (!_slideAnimation->animating()) {
 			_slideAnimation.reset();
 			setInnerVisible(true);
@ -715,14 +715,13 @@ void StickersBox::Inner::paintEvent(QPaintEvent *e) {
 	Painter p(this);

 	auto clip = e->rect();
-	auto ms = crl::now();
 	p.fillRect(clip, st::boxBg);
 	p.setClipRect(clip);

 	if (_megagroupSelectedSet) {
 		auto setTop = _megagroupDivider->y() - _rowHeight;
 		p.translate(0, setTop);
-		paintRow(p, _megagroupSelectedSet.get(), -1, ms);
+		paintRow(p, _megagroupSelectedSet.get(), -1);
 		p.translate(0, -setTop);
 	}

@ -740,13 +739,13 @@ void StickersBox::Inner::paintEvent(QPaintEvent *e) {
 		p.translate(0, from * _rowHeight);
 		for (int32 i = from; i < to; ++i) {
 			if (i != _above) {
-				paintRow(p, _rows[i].get(), i, ms);
+				paintRow(p, _rows[i].get(), i);
 			}
 			p.translate(0, _rowHeight);
 		}
 		if (from <= _above && _above < to) {
 			p.translate(0, (_above - to) * _rowHeight);
-			paintRow(p, _rows[_above].get(), _above, ms);
+			paintRow(p, _rows[_above].get(), _above);
 		}
 	}
 }
@ -790,7 +789,7 @@ QRect StickersBox::Inner::relativeButtonRect(bool removeButton) const {
 	return QRect(buttonx, buttony, buttonw, buttonh);
 }

-void StickersBox::Inner::paintRow(Painter &p, Row *set, int index, crl::time ms) {
+void StickersBox::Inner::paintRow(Painter &p, Row *set, int index) {
 	auto xadd = 0, yadd = qRound(set->yadd.current());
 	if (xadd || yadd) p.translate(xadd, yadd);

@ -804,7 +803,7 @@ void StickersBox::Inner::paintRow(Painter &p, Row *set, int index, crl::time ms)
 		if (index >= 0 && index == selectedIndex) {
 			p.fillRect(0, 0, width(), _rowHeight, st::contactsBgOver);
 			if (set->ripple) {
-				set->ripple->paint(p, 0, 0, width(), ms);
+				set->ripple->paint(p, 0, 0, width());
 			}
 		}
 	}
@ -827,13 +826,13 @@ void StickersBox::Inner::paintRow(Painter &p, Row *set, int index, crl::time ms)
 			App::roundRect(p, row, st::boxBg, BoxCorners);

 			p.setOpacity(1. - current);
-			paintFakeButton(p, set, index, ms);
+			paintFakeButton(p, set, index);
 			p.setOpacity(1.);
 		} else if (!_megagroupSet) {
-			paintFakeButton(p, set, index, ms);
+			paintFakeButton(p, set, index);
 		}
 	} else if (!_megagroupSet) {
-		paintFakeButton(p, set, index, ms);
+		paintFakeButton(p, set, index);
 	}

 	if (set->removed && _section == Section::Installed) {
@ -893,7 +892,7 @@ void StickersBox::Inner::paintRow(Painter &p, Row *set, int index, crl::time ms)
 	if (xadd || yadd) p.translate(-xadd, -yadd);
 }

-void StickersBox::Inner::paintFakeButton(Painter &p, Row *set, int index, crl::time ms) {
+void StickersBox::Inner::paintFakeButton(Painter &p, Row *set, int index) {
 	auto removeButton = (_section == Section::Installed && !set->removed);
 	auto rect = relativeButtonRect(removeButton);
 	if (_section != Section::Installed && set->installed && !set->archived && !set->removed) {
@ -906,7 +905,7 @@ void StickersBox::Inner::paintFakeButton(Painter &p, Row *set, int index, crl::t
 		if (removeButton) {
 			// Trash icon button when not disabled in Installed.
 			if (set->ripple) {
-				set->ripple->paint(p, rect.x(), rect.y(), width(), ms);
+				set->ripple->paint(p, rect.x(), rect.y(), width());
 				if (set->ripple->empty()) {
 					set->ripple.reset();
 				}
@ -915,7 +914,7 @@ void StickersBox::Inner::paintFakeButton(Painter &p, Row *set, int index, crl::t
 			auto position = st::stickersRemove.iconPosition;
 			if (position.x() < 0) position.setX((rect.width() - icon.width()) / 2);
 			if (position.y() < 0) position.setY((rect.height() - icon.height()) / 2);
-			icon.paint(p, rect.topLeft() + position, ms);
+			icon.paint(p, rect.topLeft() + position, width());
 		} else {
 			// Round button ADD when not installed from Trending or Archived.
 			// Or round button UNDO after disabled from Installed.
@ -925,7 +924,7 @@ void StickersBox::Inner::paintFakeButton(Painter &p, Row *set, int index, crl::t
 			auto &textBg = selected ? st.textBgOver : st.textBg;
 			App::roundRect(p, myrtlrect(rect), textBg, ImageRoundRadius::Small);
 			if (set->ripple) {
-				set->ripple->paint(p, rect.x(), rect.y(), width(), ms);
+				set->ripple->paint(p, rect.x(), rect.y(), width());
 				if (set->ripple->empty()) {
 					set->ripple.reset();
 				}
--- a/Telegram/SourceFiles/boxes/stickers_box.h
+++ b/Telegram/SourceFiles/boxes/stickers_box.h
@ -272,8 +272,8 @@ private:
 	void ensureRipple(const style::RippleAnimation &st, QImage mask, bool removeButton);

 	bool shiftingAnimationCallback(crl::time now);
-	void paintRow(Painter &p, Row *set, int index, crl::time ms);
-	void paintFakeButton(Painter &p, Row *set, int index, crl::time ms);
+	void paintRow(Painter &p, Row *set, int index);
+	void paintFakeButton(Painter &p, Row *set, int index);
 	void clear();
 	void setActionSel(int32 actionSel);
 	float64 aboveShadowOpacity() const;
--- a/Telegram/SourceFiles/calls/calls_box_controller.cpp
+++ b/Telegram/SourceFiles/calls/calls_box_controller.cpp
@ -97,7 +97,6 @@ public:
 	}
 	void paintAction(
 		Painter &p,
-		crl::time ms,
 		int x,
 		int y,
 		int outerWidth,
@ -143,7 +142,6 @@ void BoxController::Row::paintStatusText(Painter &p, const style::PeerListItem &

 void BoxController::Row::paintAction(
 		Painter &p,
-		crl::time ms,
 		int x,
 		int y,
 		int outerWidth,
@ -151,7 +149,7 @@ void BoxController::Row::paintAction(
 		bool actionSelected) {
 	auto size = actionSize();
 	if (_actionRipple) {
-		_actionRipple->paint(p, x + st::callReDial.rippleAreaPosition.x(), y + st::callReDial.rippleAreaPosition.y(), outerWidth, ms);
+		_actionRipple->paint(p, x + st::callReDial.rippleAreaPosition.x(), y + st::callReDial.rippleAreaPosition.y(), outerWidth);
 		if (_actionRipple->empty()) {
 			_actionRipple.reset();
 		}
--- a/Telegram/SourceFiles/calls/calls_panel.cpp
+++ b/Telegram/SourceFiles/calls/calls_panel.cpp
@ -66,7 +66,7 @@ private:
 	QImage _iconMixedMask, _iconFrom, _iconTo, _iconMixed;

 	float64 _outerValue = 0.;
-	Animation _outerAnimation;
+	Ui::Animations::Simple _outerAnimation;

 };

@ -186,12 +186,11 @@ void Panel::Button::setProgress(float64 progress) {
 void Panel::Button::paintEvent(QPaintEvent *e) {
 	Painter p(this);

-	auto ms = crl::now();
 	auto bgPosition = myrtlpoint(_stFrom->button.rippleAreaPosition);
 	auto paintFrom = (_progress == 0.) || !_stTo;
 	auto paintTo = !paintFrom && (_progress == 1.);

-	auto outerValue = _outerAnimation.current(ms, _outerValue);
+	auto outerValue = _outerAnimation.value(_outerValue);
 	if (outerValue > 0.) {
 		auto outerRadius = paintFrom ? _stFrom->outerRadius : paintTo ? _stTo->outerRadius : (_stFrom->outerRadius * (1. - _progress) + _stTo->outerRadius * _progress);
 		auto outerPixels = outerValue * outerRadius;
@ -228,7 +227,7 @@ void Panel::Button::paintEvent(QPaintEvent *e) {
 	} else {
 		rippleColorInterpolated = anim::color(_stFrom->button.ripple.color, _stTo->button.ripple.color, _progress);
 	}
-	paintRipple(p, _stFrom->button.rippleAreaPosition.x(), _stFrom->button.rippleAreaPosition.y(), ms, rippleColorOverride);
+	paintRipple(p, _stFrom->button.rippleAreaPosition.x(), _stFrom->button.rippleAreaPosition.y(), rippleColorOverride);

 	auto positionFrom = iconPosition(_stFrom);
 	if (paintFrom) {
@ -681,7 +680,7 @@ void Panel::updateHangupGeometry() {
 	auto bothWidth = singleWidth + st::callControlsSkip + st::callCancel.button.width;
 	auto rightFrom = (width() - bothWidth) / 2;
 	auto rightTo = (width() - singleWidth) / 2;
-	auto hangupProgress = _hangupShownProgress.current(_hangupShown ? 1. : 0.);
+	auto hangupProgress = _hangupShownProgress.value(_hangupShown ? 1. : 0.);
 	auto hangupRight = anim::interpolate(rightFrom, rightTo, hangupProgress);
 	auto controlsTop = _contentTop + st::callControlsTop;
 	_answerHangupRedial->moveToRight(hangupRight, controlsTop);
@ -695,7 +694,7 @@ void Panel::updateStatusGeometry() {
 void Panel::paintEvent(QPaintEvent *e) {
 	Painter p(this);
 	if (!_animationCache.isNull()) {
-		auto opacity = _opacityAnimation.current(crl::now(), _call ? 1. : 0.);
+		auto opacity = _opacityAnimation.value(_call ? 1. : 0.);
 		if (!_opacityAnimation.animating()) {
 			finishAnimating();
 			if (!_call || isHidden()) return;
--- a/Telegram/SourceFiles/calls/calls_panel.h
+++ b/Telegram/SourceFiles/calls/calls_panel.h
@ -11,6 +11,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "base/timer.h"
 #include "calls/calls_call.h"
 #include "ui/widgets/tooltip.h"
+#include "ui/effects/animations.h"
 #include "ui/rp_widget.h"

 namespace Ui {
@ -126,7 +127,7 @@ private:
 	object_ptr<Ui::FadeWrap<Button>> _decline;
 	object_ptr<Ui::FadeWrap<Button>> _cancel;
 	bool _hangupShown = false;
-	Animation _hangupShownProgress;
+	Ui::Animations::Simple _hangupShownProgress;
 	object_ptr<Ui::IconButton> _mute;
 	object_ptr<Ui::FlatLabel> _name;
 	object_ptr<Ui::FlatLabel> _status;
@ -142,7 +143,7 @@ private:
 	PhotoId _userPhotoId = 0;
 	bool _userPhotoFull = false;

-	Animation _opacityAnimation;
+	Ui::Animations::Simple _opacityAnimation;
 	QPixmap _animationCache;
 	QPixmap _bottomCache;
 	QPixmap _cache;
--- a/Telegram/SourceFiles/chat_helpers/bot_keyboard.cpp
+++ b/Telegram/SourceFiles/chat_helpers/bot_keyboard.cpp
@ -110,7 +110,7 @@ void BotKeyboard::paintEvent(QPaintEvent *e) {
 	if (_impl) {
 		int x = rtl() ? st::botKbScroll.width : _st->margin;
 		p.translate(x, st::botKbScroll.deltat);
-		_impl->paint(p, width(), clip.translated(-x, -st::botKbScroll.deltat), crl::now());
+		_impl->paint(p, width(), clip.translated(-x, -st::botKbScroll.deltat));
 	}
 }

--- a/Telegram/SourceFiles/chat_helpers/emoji_list_widget.cpp
+++ b/Telegram/SourceFiles/chat_helpers/emoji_list_widget.cpp
@ -7,6 +7,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 */
 #include "chat_helpers/emoji_list_widget.h"

+#include "ui/effects/animations.h"
 #include "ui/widgets/buttons.h"
 #include "ui/widgets/shadow.h"
 #include "ui/emoji_config.h"
@ -62,7 +63,7 @@ private:

 	bool _hiding = false;
 	QPixmap _cache;
-	Animation _a_opacity;
+	Ui::Animations::Simple _a_opacity;

 	rpl::event_stream<EmojiPtr> _chosen;
 	rpl::event_stream<> _hidden;
@ -186,7 +187,7 @@ void EmojiColorPicker::updateSize() {
 void EmojiColorPicker::paintEvent(QPaintEvent *e) {
 	Painter p(this);

-	auto opacity = _a_opacity.current(crl::now(), _hiding ? 0. : 1.);
+	auto opacity = _a_opacity.value(_hiding ? 0. : 1.);
 	if (opacity < 1.) {
 		if (opacity > 0.) {
 			p.setOpacity(opacity);
@ -272,7 +273,7 @@ void EmojiColorPicker::animationCallback() {

 void EmojiColorPicker::hideFast() {
 	clearSelection();
-	_a_opacity.finish();
+	_a_opacity.stop();
 	_cache = QPixmap();
 	hide();
 	_hidden.fire({});
--- a/Telegram/SourceFiles/chat_helpers/emoji_sets_manager.cpp
+++ b/Telegram/SourceFiles/chat_helpers/emoji_sets_manager.cpp
@ -12,6 +12,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "ui/wrap/fade_wrap.h"
 #include "ui/widgets/buttons.h"
 #include "ui/widgets/labels.h"
+#include "ui/effects/animations.h"
 #include "ui/effects/radial_animation.h"
 #include "ui/emoji_config.h"
 #include "lang/lang_keys.h"
@ -119,8 +120,8 @@ private:
 	void setupPreview(const Set &set);
 	void setupAnimation();
 	void paintPreview(Painter &p) const;
-	void paintRadio(Painter &p, crl::time ms);
-	void updateAnimation(crl::time ms);
+	void paintRadio(Painter &p, crl::time now);
+	void updateAnimation(crl::time now);
 	void setupHandler();
 	void load();

@ -131,8 +132,8 @@ private:
 	rpl::variable<SetState> _state;
 	Ui::FlatLabel *_status = nullptr;
 	std::array<QPixmap, 4> _preview;
-	Animation _toggled;
-	Animation _active;
+	Ui::Animations::Simple _toggled;
+	Ui::Animations::Simple _active;
 	std::unique_ptr<Ui::RadialAnimation> _loading;

 };
@ -355,11 +356,9 @@ void Row::paintEvent(QPaintEvent *e) {
 	const auto bg = over ? st::windowBgOver : st::windowBg;
 	p.fillRect(rect(), bg);

-	const auto ms = crl::now();
-	paintRipple(p, 0, 0, ms);
-
+	paintRipple(p, 0, 0);
 	paintPreview(p);
-	paintRadio(p, ms);
+	paintRadio(p, crl::now());
 }

 void Row::paintPreview(Painter &p) const {
@ -377,16 +376,16 @@ void Row::paintPreview(Painter &p) const {
 	}
 }

-void Row::paintRadio(Painter &p, crl::time ms) {
-	updateAnimation(ms);
+void Row::paintRadio(Painter &p, crl::time now) {
+	updateAnimation(now);

 	const auto loading = _loading
 		? _loading->computeState()
 		: Ui::RadialState{ 0., 0, FullArcLength };
 	const auto isToggledSet = _state.current().is<Active>();
 	const auto isActiveSet = isToggledSet || _state.current().is<Loading>();
-	const auto toggled = _toggled.current(ms, isToggledSet ? 1. : 0.);
-	const auto active = _active.current(ms, isActiveSet ? 1. : 0.);
+	const auto toggled = _toggled.value(isToggledSet ? 1. : 0.);
+	const auto active = _active.value(isActiveSet ? 1. : 0.);
 	const auto _st = &st::defaultRadio;

 	PainterHighQualityEnabler hq(p);
@ -466,7 +465,7 @@ void Row::onStateChanged(State was, StateChangeSource source) {

 void Row::updateStatusColorOverride() {
 	const auto isToggledSet = _state.current().is<Active>();
-	const auto toggled = _toggled.current(isToggledSet ? 1. : 0.);
+	const auto toggled = _toggled.value(isToggledSet ? 1. : 0.);
 	const auto over = showOver();
 	if (toggled == 0. && !over) {
 		_status->setTextColorOverride(std::nullopt);
@ -620,12 +619,12 @@ void Row::setupAnimation() {
 			st::defaultRadio.duration);
 	}, lifetime());

-	_toggled.finish();
-	_active.finish();
+	_toggled.stop();
+	_active.stop();
 	updateStatusColorOverride();
 }

-void Row::updateAnimation(crl::time ms) {
+void Row::updateAnimation(crl::time now) {
 	const auto state = _state.current();
 	if (const auto loading = base::get_if<Loading>(&state)) {
 		const auto progress = (loading->size > 0)
@ -636,10 +635,10 @@ void Row::updateAnimation(crl::time ms) {
 				[=] { radialAnimationCallback(); });
 			_loading->start(progress);
 		} else {
-			_loading->update(progress, false, crl::now());
+			_loading->update(progress, false, now);
 		}
 	} else if (_loading) {
-		_loading->update(state.is<Failed>() ? 0. : 1., true, crl::now());
+		_loading->update(state.is<Failed>() ? 0. : 1., true, now);
 	} else {
 		_loading = nullptr;
 	}
--- a/Telegram/SourceFiles/chat_helpers/field_autocomplete.cpp
+++ b/Telegram/SourceFiles/chat_helpers/field_autocomplete.cpp
@ -47,7 +47,7 @@ FieldAutocomplete::FieldAutocomplete(QWidget *parent) : TWidget(parent)
 void FieldAutocomplete::paintEvent(QPaintEvent *e) {
 	Painter p(this);

-	auto opacity = _a_opacity.current(crl::now(), _hiding ? 0. : 1.);
+	auto opacity = _a_opacity.value(_hiding ? 0. : 1.);
 	if (opacity < 1.) {
 		if (opacity > 0.) {
 			p.setOpacity(opacity);
@ -234,15 +234,15 @@ void FieldAutocomplete::updateFiltered(bool resetScroll) {
 		bool listAllSuggestions = _filter.isEmpty();
 		auto &recent(cRecentWriteHashtags());
 		hrows.reserve(recent.size());
-		for (auto i = recent.cbegin(), e = recent.cend(); i != e; ++i) {
+		for (const auto &[tag, ratio] : recent) {
 			if (!listAllSuggestions
-				&& (i->first.size() == _filter.size()
-					|| !TextUtilities::RemoveAccents(i->first).startsWith(
+				&& (tag.size() == _filter.size()
+					|| !TextUtilities::RemoveAccents(tag).startsWith(
 						_filter,
 						Qt::CaseInsensitive))) {
 				continue;
 			}
-			hrows.push_back(i->first);
+			hrows.push_back(tag);
 		}
 	} else if (_type == Type::BotCommands) {
 		bool listAllSuggestions = _filter.isEmpty();
@ -290,8 +290,7 @@ void FieldAutocomplete::updateFiltered(bool resetScroll) {
 			brows.reserve(cnt);
 			int32 botStatus = _chat ? _chat->botStatus : ((_channel && _channel->isMegagroup()) ? _channel->mgInfo->botStatus : -1);
 			if (_chat) {
-				for (auto i = _chat->lastAuthors.cbegin(), e = _chat->lastAuthors.cend(); i != e; ++i) {
-					auto user = *i;
+				for (const auto &user : _chat->lastAuthors) {
 					if (!user->botInfo) continue;
 					if (!bots.contains(user)) continue;
 					if (!user->botInfo->inited) {
@ -396,7 +395,7 @@ void FieldAutocomplete::recount(bool resetScroll) {
 }

 void FieldAutocomplete::hideFast() {
-	_a_opacity.finish();
+	_a_opacity.stop();
 	hideFinish();
 }

--- a/Telegram/SourceFiles/chat_helpers/field_autocomplete.h
+++ b/Telegram/SourceFiles/chat_helpers/field_autocomplete.h
@ -7,6 +7,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 */
 #pragma once

+#include "ui/effects/animations.h"
 #include "ui/twidget.h"
 #include "base/timer.h"
 #include "chat_helpers/stickers.h"
@ -123,7 +124,7 @@ private:
 	int32 _width, _height;
 	bool _hiding = false;

-	Animation _a_opacity;
+	Ui::Animations::Simple _a_opacity;

 	friend class internal::FieldAutocompleteInner;

--- a/Telegram/SourceFiles/chat_helpers/stickers_list_widget.cpp
+++ b/Telegram/SourceFiles/chat_helpers/stickers_list_widget.cpp
@ -1170,7 +1170,6 @@ void StickersListWidget::paintStickers(Painter &p, QRect clip) {
 		toColumn = _columnCount - toColumn;
 	}

-	auto ms = crl::now();
 	auto &sets = shownSets();
 	auto selectedSticker = base::get_if<OverSticker>(&_selected);
 	auto selectedButton = base::get_if<OverButton>(_pressed ? &_pressed : &_selected);
@ -1199,7 +1198,7 @@ void StickersListWidget::paintStickers(Painter &p, QRect clip) {

 				App::roundRect(p, myrtlrect(add), textBg, ImageRoundRadius::Small);
 				if (set.ripple) {
-					set.ripple->paint(p, add.x(), add.y(), width(), ms);
+					set.ripple->paint(p, add.x(), add.y(), width());
 					if (set.ripple->empty()) {
 						set.ripple.reset();
 					}
@ -1266,7 +1265,7 @@ void StickersListWidget::paintStickers(Painter &p, QRect clip) {
 				auto remove = removeButtonRect(info.section);
 				auto selected = selectedButton ? (selectedButton->section == info.section) : false;
 				if (set.ripple) {
-					set.ripple->paint(p, remove.x() + st::stickerPanRemoveSet.rippleAreaPosition.x(), remove.y() + st::stickerPanRemoveSet.rippleAreaPosition.y(), width(), ms);
+					set.ripple->paint(p, remove.x() + st::stickerPanRemoveSet.rippleAreaPosition.x(), remove.y() + st::stickerPanRemoveSet.rippleAreaPosition.y(), width());
 					if (set.ripple->empty()) {
 						set.ripple.reset();
 					}
@ -1286,7 +1285,7 @@ void StickersListWidget::paintStickers(Painter &p, QRect clip) {
 		if (clip.top() + clip.height() > info.rowsTop) {
 			if (set.id == Stickers::MegagroupSetId && set.pack.empty()) {
 				auto buttonSelected = (base::get_if<OverGroupAdd>(&_selected) != nullptr);
-				paintMegagroupEmptySet(p, info.rowsTop, buttonSelected, ms);
+				paintMegagroupEmptySet(p, info.rowsTop, buttonSelected);
 			} else {
 				auto special = (set.flags & MTPDstickerSet::Flag::f_official) != 0;
 				auto fromRow = floorclamp(clip.y() - info.rowsTop, _singleSize.height(), 0, info.rowsCount);
@ -1328,7 +1327,7 @@ int StickersListWidget::megagroupSetInfoLeft() const {
 	return st::emojiPanHeaderLeft - st::buttonRadius;
 }

-void StickersListWidget::paintMegagroupEmptySet(Painter &p, int y, bool buttonSelected, crl::time ms) {
+void StickersListWidget::paintMegagroupEmptySet(Painter &p, int y, bool buttonSelected) {
 	auto infoLeft = megagroupSetInfoLeft();
 	_megagroupSetAbout.drawLeft(p, infoLeft, y, width() - infoLeft, width());

@ -1339,7 +1338,7 @@ void StickersListWidget::paintMegagroupEmptySet(Painter &p, int y, bool buttonSe
 	auto button = _megagroupSetButtonRect.translated(0, y);
 	App::roundRect(p, myrtlrect(button), textBg, ImageRoundRadius::Small);
 	if (_megagroupSetButtonRipple) {
-		_megagroupSetButtonRipple->paint(p, button.x(), button.y(), width(), ms);
+		_megagroupSetButtonRipple->paint(p, button.x(), button.y(), width());
 		if (_megagroupSetButtonRipple->empty()) {
 			_megagroupSetButtonRipple.reset();
 		}
--- a/Telegram/SourceFiles/chat_helpers/stickers_list_widget.h
+++ b/Telegram/SourceFiles/chat_helpers/stickers_list_widget.h
@ -201,7 +201,7 @@ private:

 	void paintFeaturedStickers(Painter &p, QRect clip);
 	void paintStickers(Painter &p, QRect clip);
-	void paintMegagroupEmptySet(Painter &p, int y, bool buttonSelected, crl::time ms);
+	void paintMegagroupEmptySet(Painter &p, int y, bool buttonSelected);
 	void paintSticker(Painter &p, Set &set, int y, int index, bool selected, bool deleteSelected);
 	void paintEmptySearchResults(Painter &p);

--- a/Telegram/SourceFiles/chat_helpers/tabbed_panel.cpp
+++ b/Telegram/SourceFiles/chat_helpers/tabbed_panel.cpp
@ -155,12 +155,10 @@ void TabbedPanel::windowActiveChanged() {
 void TabbedPanel::paintEvent(QPaintEvent *e) {
 	Painter p(this);

-	auto ms = crl::now();
-
 	// This call can finish _a_show animation and destroy _showAnimation.
-	auto opacityAnimating = _a_opacity.animating(ms);
+	auto opacityAnimating = _a_opacity.animating();

-	auto showAnimating = _a_show.animating(ms);
+	auto showAnimating = _a_show.animating();
 	if (_showAnimation && !showAnimating) {
 		_showAnimation.reset();
 		if (!opacityAnimating && !isDestroying()) {
@ -171,11 +169,11 @@ void TabbedPanel::paintEvent(QPaintEvent *e) {

 	if (showAnimating) {
 		Assert(_showAnimation != nullptr);
-		if (auto opacity = _a_opacity.current(_hiding ? 0. : 1.)) {
-			_showAnimation->paintFrame(p, 0, 0, width(), _a_show.current(1.), opacity);
+		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.current(_hiding ? 0. : 1.));
+		p.setOpacity(_a_opacity.value(_hiding ? 0. : 1.));
 		p.drawPixmap(0, 0, _cache);
 	} else if (_hiding || isHidden()) {
 		hideFinished();
@ -208,8 +206,7 @@ void TabbedPanel::leaveEventHook(QEvent *e) {
 	if (preventAutoHide()) {
 		return;
 	}
-	auto ms = crl::now();
-	if (_a_show.animating(ms) || _a_opacity.animating(ms)) {
+	if (_a_show.animating() || _a_opacity.animating()) {
 		hideAnimated();
 	} else {
 		_hideTimer.callOnce(kHideTimeoutMs);
@ -226,8 +223,7 @@ void TabbedPanel::otherLeave() {
 		return;
 	}

-	auto ms = crl::now();
-	if (_a_opacity.animating(ms)) {
+	if (_a_opacity.animating()) {
 		hideByTimerOrLeave();
 	} else {
 		_hideTimer.callOnce(0);
@ -239,7 +235,7 @@ void TabbedPanel::hideFast() {

 	_hideTimer.cancel();
 	_hiding = false;
-	_a_opacity.finish();
+	_a_opacity.stop();
 	hideFinished();
 }

@ -363,7 +359,7 @@ QPointer<TabbedSelector> TabbedPanel::getSelector() const {

 void TabbedPanel::hideFinished() {
 	hide();
-	_a_show.finish();
+	_a_show.stop();
 	_showAnimation.reset();
 	_cache = QPixmap();
 	_hiding = false;
--- a/Telegram/SourceFiles/chat_helpers/tabbed_panel.h
+++ b/Telegram/SourceFiles/chat_helpers/tabbed_panel.h
@ -7,6 +7,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 */
 #pragma once

+#include "ui/effects/animations.h"
 #include "ui/rp_widget.h"
 #include "base/timer.h"

@ -99,12 +100,12 @@ private:
 	int _maxContentHeight = 0;

 	std::unique_ptr<Ui::PanelAnimation> _showAnimation;
-	Animation _a_show;
+	Ui::Animations::Simple _a_show;

 	bool _hiding = false;
 	bool _hideAfterSlide = false;
 	QPixmap _cache;
-	Animation _a_opacity;
+	Ui::Animations::Simple _a_opacity;
 	base::Timer _hideTimer;

 };
--- a/Telegram/SourceFiles/chat_helpers/tabbed_selector.cpp
+++ b/Telegram/SourceFiles/chat_helpers/tabbed_selector.cpp
@ -494,11 +494,9 @@ void TabbedSelector::updateRestrictedLabelGeometry() {
 void TabbedSelector::paintEvent(QPaintEvent *e) {
 	Painter p(this);

-	auto ms = crl::now();
-
 	auto switching = (_slideAnimation != nullptr);
 	if (switching) {
-		paintSlideFrame(p, ms);
+		paintSlideFrame(p);
 		if (!_a_slide.animating()) {
 			_slideAnimation.reset();
 			afterShown();
@ -509,7 +507,7 @@ void TabbedSelector::paintEvent(QPaintEvent *e) {
 	}
 }

-void TabbedSelector::paintSlideFrame(Painter &p, crl::time ms) {
+void TabbedSelector::paintSlideFrame(Painter &p) {
 	if (_roundRadius > 0) {
 		if (full()) {
 			auto topPart = QRect(0, 0, width(), _tabsSlider->height() + _roundRadius);
@ -521,7 +519,7 @@ void TabbedSelector::paintSlideFrame(Painter &p, crl::time ms) {
 	} else if (full()) {
 		p.fillRect(0, 0, width(), _tabsSlider->height(), st::emojiPanBg);
 	}
-	auto slideDt = _a_slide.current(ms, 1.);
+	auto slideDt = _a_slide.value(1.);
 	_slideAnimation->paintFrame(p, slideDt, 1.);
 }

@ -621,7 +619,7 @@ void TabbedSelector::hideFinished() {
 		}
 		tab.widget()->panelHideFinished();
 	}
-	_a_slide.finish();
+	_a_slide.stop();
 	_slideAnimation.reset();
 }

@ -631,7 +629,7 @@ void TabbedSelector::showStarted() {
 	}
 	currentTab()->widget()->refreshRecent();
 	currentTab()->widget()->preloadImages();
-	_a_slide.finish();
+	_a_slide.stop();
 	_slideAnimation.reset();
 	showAll();
 }
--- a/Telegram/SourceFiles/chat_helpers/tabbed_selector.h
+++ b/Telegram/SourceFiles/chat_helpers/tabbed_selector.h
@ -8,6 +8,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #pragma once

 #include "ui/rp_widget.h"
+#include "ui/effects/animations.h"
 #include "ui/effects/panel_animation.h"
 #include "mtproto/sender.h"
 #include "auth_session.h"
@ -149,7 +150,7 @@ private:
 		SelectorTab type,
 		not_null<Window::Controller*> controller);

-	void paintSlideFrame(Painter &p, crl::time ms);
+	void paintSlideFrame(Painter &p);
 	void paintContent(Painter &p);

 	void checkRestrictedPeer();
@ -191,7 +192,7 @@ private:

 	class SlideAnimation;
 	std::unique_ptr<SlideAnimation> _slideAnimation;
-	Animation _a_slide;
+	Ui::Animations::Simple _a_slide;

 	object_ptr<Ui::SettingsSlider> _tabsSlider = { nullptr };
 	object_ptr<Ui::PlainShadow> _topShadow;
--- a/Telegram/SourceFiles/dialogs/dialogs_inner_widget.cpp
+++ b/Telegram/SourceFiles/dialogs/dialogs_inner_widget.cpp
@ -368,7 +368,7 @@ void DialogsInner::paintRegion(Painter &p, const QRegion &region, bool paintingO
 					auto &result = _hashtagResults[from];
 					bool selected = (from == (isPressed() ? _hashtagPressed : _hashtagSelected));
 					p.fillRect(0, 0, fullWidth, st::mentionHeight, selected ? st::mentionBgOver : st::dialogsBg);
-					result->row.paintRipple(p, 0, 0, fullWidth, ms);
+					result->row.paintRipple(p, 0, 0, fullWidth);
 					if (!paintingOther) {
 						auto &tag = result->tag;
 						if (selected) {
@ -456,14 +456,14 @@ void DialogsInner::paintRegion(Painter &p, const QRegion &region, bool paintingO
 					const auto selected = (from == (isPressed()
 						? _peerSearchPressed
 						: _peerSearchSelected));
-					paintPeerSearchResult(p, result.get(), fullWidth, active, selected, paintingOther, ms);
+					paintPeerSearchResult(p, result.get(), fullWidth, active, selected, paintingOther);
 					p.translate(0, st::dialogsRowHeight);
 				}
 			}
 		}

 		if (_searchInChat) {
-			paintSearchInChat(p, fullWidth, paintingOther, ms);
+			paintSearchInChat(p, fullWidth, paintingOther);
 			p.translate(0, searchInChatSkip());
 			if (_waitingForSearch && _searchResults.empty()) {
 				p.fillRect(
@ -549,12 +549,11 @@ void DialogsInner::paintPeerSearchResult(
 		int fullWidth,
 		bool active,
 		bool selected,
-		bool onlyBackground,
-		crl::time ms) const {
+		bool onlyBackground) const {
 	QRect fullRect(0, 0, fullWidth, st::dialogsRowHeight);
 	p.fillRect(fullRect, active ? st::dialogsBgActive : (selected ? st::dialogsBgOver : st::dialogsBg));
 	if (!active) {
-		result->row.paintRipple(p, 0, 0, fullWidth, ms);
+		result->row.paintRipple(p, 0, 0, fullWidth);
 	}
 	if (onlyBackground) return;

@ -605,8 +604,7 @@ void DialogsInner::paintPeerSearchResult(
 void DialogsInner::paintSearchInChat(
 		Painter &p,
 		int fullWidth,
-		bool onlyBackground,
-		crl::time ms) const {
+		bool onlyBackground) const {
 	auto height = searchInChatSkip();

 	auto top = st::searchedBarHeight;
--- a/Telegram/SourceFiles/dialogs/dialogs_inner_widget.h
+++ b/Telegram/SourceFiles/dialogs/dialogs_inner_widget.h
@ -236,13 +236,11 @@ private:
 		int fullWidth,
 		bool active,
 		bool selected,
-		bool onlyBackground,
-		crl::time ms) const;
+		bool onlyBackground) const;
 	void paintSearchInChat(
 		Painter &p,
 		int fullWidth,
-		bool onlyBackground,
-		crl::time ms) const;
+		bool onlyBackground) const;
 	void paintSearchInPeer(
 		Painter &p,
 		not_null<PeerData*> peer,
--- a/Telegram/SourceFiles/dialogs/dialogs_layout.cpp
+++ b/Telegram/SourceFiles/dialogs/dialogs_layout.cpp
@ -202,7 +202,7 @@ void paintRow(
 		? st::dialogsRippleBgActive
 		: st::dialogsRippleBg;
 	p.fillRect(fullRect, bg);
-	row->paintRipple(p, 0, 0, fullWidth, ms, &ripple->c);
+	row->paintRipple(p, 0, 0, fullWidth, &ripple->c);

 	if (flags & Flag::OnlyBackground) {
 		return;
--- a/Telegram/SourceFiles/dialogs/dialogs_row.cpp
+++ b/Telegram/SourceFiles/dialogs/dialogs_row.cpp
@ -31,9 +31,9 @@ void RippleRow::stopLastRipple() {
 	}
 }

-void RippleRow::paintRipple(Painter &p, int x, int y, int outerWidth, crl::time ms, const QColor *colorOverride) const {
+void RippleRow::paintRipple(Painter &p, int x, int y, int outerWidth, const QColor *colorOverride) const {
 	if (_ripple) {
-		_ripple->paint(p, x, y, outerWidth, ms, colorOverride);
+		_ripple->paint(p, x, y, outerWidth, colorOverride);
 		if (_ripple->empty()) {
 			_ripple.reset();
 		}
--- a/Telegram/SourceFiles/dialogs/dialogs_row.h
+++ b/Telegram/SourceFiles/dialogs/dialogs_row.h
@ -30,7 +30,7 @@ public:
 	void addRipple(QPoint origin, QSize size, Fn<void()> updateCallback);
 	void stopLastRipple();

-	void paintRipple(Painter &p, int x, int y, int outerWidth, crl::time ms, const QColor *colorOverride = nullptr) const;
+	void paintRipple(Painter &p, int x, int y, int outerWidth, const QColor *colorOverride = nullptr) const;

 private:
 	mutable std::unique_ptr<Ui::RippleAnimation> _ripple;
--- a/Telegram/SourceFiles/dialogs/dialogs_widget.cpp
+++ b/Telegram/SourceFiles/dialogs/dialogs_widget.cpp
@ -125,7 +125,7 @@ void DialogsWidget::BottomButton::paintEvent(QPaintEvent *e) {
 	p.fillRect(r, over ? _st.overBgColor : _st.bgColor);

 	if (!isDisabled()) {
-		paintRipple(p, 0, 0, crl::now());
+		paintRipple(p, 0, 0);
 	}

 	p.setFont(over ? _st.overFont : _st.font);
@ -333,7 +333,7 @@ void DialogsWidget::dialogsToUp() {
 		return;
 	}
 	if (_filter->getLastText().trimmed().isEmpty() && !_searchInChat) {
-		_scrollToAnimation.finish();
+		_scrollToAnimation.stop();
 		auto scrollTop = _scroll->scrollTop();
 		const auto scrollTo = 0;
 		const auto maxAnimatedDelta = _scroll->height();
@ -342,8 +342,8 @@ void DialogsWidget::dialogsToUp() {
 			_scroll->scrollToY(scrollTop);
 		}

-		const auto scroll = [&] {
-			_scroll->scrollToY(qRound(_scrollToAnimation.current()));
+		const auto scroll = [=] {
+			_scroll->scrollToY(qRound(_scrollToAnimation.value(scrollTo)));
 		};

 		_scrollToAnimation.start(
@ -394,7 +394,7 @@ void DialogsWidget::showFast() {
 void DialogsWidget::showAnimated(Window::SlideDirection direction, const Window::SectionSlideParams &params) {
 	_showDirection = direction;

-	_a_show.finish();
+	_a_show.stop();

 	_cacheUnder = params.oldContentCache;
 	show();
@ -1448,7 +1448,7 @@ void DialogsWidget::paintEvent(QPaintEvent *e) {
 	if (r != rect()) {
 		p.setClipRect(r);
 	}
-	auto progress = _a_show.current(crl::now(), 1.);
+	auto progress = _a_show.value(1.);
 	if (_a_show.animating()) {
 		auto retina = cIntRetinaFactor();
 		auto fromLeft = (_showDirection == Window::SlideDirection::FromLeft);
--- a/Telegram/SourceFiles/dialogs/dialogs_widget.h
+++ b/Telegram/SourceFiles/dialogs/dialogs_widget.h
@ -8,6 +8,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #pragma once

 #include "window/section_widget.h"
+#include "ui/effects/animations.h"
 #include "ui/widgets/scroll_area.h"
 #include "dialogs/dialogs_key.h"

@ -199,8 +200,8 @@ private:
 	object_ptr<BottomButton> _loadMoreChats = { nullptr };
 	std::unique_ptr<Window::ConnectionState> _connecting;

-	Animation _scrollToAnimation;
-	Animation _a_show;
+	Ui::Animations::Simple _scrollToAnimation;
+	Ui::Animations::Simple _a_show;
 	Window::SlideDirection _showDirection;
 	QPixmap _cacheUnder, _cacheOver;

--- a/Telegram/SourceFiles/export/view/export_view_progress.cpp
+++ b/Telegram/SourceFiles/export/view/export_view_progress.cpp
@ -7,6 +7,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 */
 #include "export/view/export_view_progress.h"

+#include "ui/effects/animations.h"
 #include "ui/widgets/labels.h"
 #include "ui/widgets/buttons.h"
 #include "ui/wrap/fade_wrap.h"
@ -35,10 +36,10 @@ private:
 		base::unique_qptr<Ui::FadeWrap<Ui::FlatLabel>> info;

 		float64 value = 0.;
-		Animation progress;
+		Ui::Animations::Simple progress;

 		bool hiding = true;
-		Animation opacity;
+		Ui::Animations::Simple opacity;
 	};

 	void fillCurrentInstance();
@ -77,7 +78,7 @@ void ProgressWidget::Row::updateData(Content::Row &&data) {
 		_current.info->entity()->setText(_data.info);
 		setInstanceProgress(_current, _data.progress);
 		if (nowId != wasId) {
-			_current.progress.finish();
+			_current.progress.stop();
 		}
 	}
 	updateControlsGeometry(width());
@ -105,7 +106,7 @@ void ProgressWidget::Row::fillCurrentInstance() {
 	setInstanceProgress(_current, _data.progress);
 	toggleInstance(_current, true);
 	if (_data.id == "main") {
-		_current.opacity.finish();
+		_current.opacity.stop();
 		_current.label->finishAnimating();
 		_current.info->finishAnimating();
 	}
@ -131,7 +132,7 @@ void ProgressWidget::Row::setInstanceProgress(
 			st::exportProgressDuration,
 			anim::sineInOut);
 	} else if (_current.value > progress) {
-		_current.progress.finish();
+		_current.progress.stop();
 	}
 	_current.value = progress;
 }
@ -194,7 +195,7 @@ void ProgressWidget::Row::paintEvent(QPaintEvent *e) {
 }

 void ProgressWidget::Row::paintInstance(Painter &p, const Instance &data) {
-	const auto opacity = data.opacity.current(data.hiding ? 0. : 1.);
+	const auto opacity = data.opacity.value(data.hiding ? 0. : 1.);

 	if (!opacity) {
 		return;
@ -203,7 +204,7 @@ void ProgressWidget::Row::paintInstance(Painter &p, const Instance &data) {

 	const auto thickness = st::exportProgressWidth;
 	const auto top = height() - thickness;
-	const auto till = qRound(data.progress.current(data.value) * width());
+	const auto till = qRound(data.progress.value(data.value) * width());
 	if (till > 0) {
 		p.fillRect(0, top, till, thickness, st::exportProgressFg);
 	}
--- a/Telegram/SourceFiles/history/admin_log/history_admin_log_filter.cpp
+++ b/Telegram/SourceFiles/history/admin_log/history_admin_log_filter.cpp
@ -99,10 +99,9 @@ void UserCheckbox::setChecked(bool checked, NotifyAboutChange notify) {
 void UserCheckbox::paintEvent(QPaintEvent *e) {
 	Painter p(this);

-	auto ms = crl::now();
-	auto active = _check->currentAnimationValue(ms);
+	auto active = _check->currentAnimationValue();
 	auto color = anim::color(_st.rippleBg, _st.rippleBgActive, active);
-	paintRipple(p, _st.rippleAreaPosition.x(), _st.rippleAreaPosition.y() + (_checkRect.y() - st::defaultBoxCheckbox.margin.top()), ms, &color);
+	paintRipple(p, _st.rippleAreaPosition.x(), _st.rippleAreaPosition.y() + (_checkRect.y() - st::defaultBoxCheckbox.margin.top()), &color);

 	auto realCheckRect = myrtlrect(_checkRect);
 	if (realCheckRect.intersects(e->rect())) {
--- a/Telegram/SourceFiles/history/admin_log/history_admin_log_inner.cpp
+++ b/Telegram/SourceFiles/history/admin_log/history_admin_log_inner.cpp
@ -801,7 +801,7 @@ void InnerWidget::paintEvent(QPaintEvent *e) {
 			});

 			auto dateHeight = st::msgServicePadding.bottom() + st::msgServiceFont->height + st::msgServicePadding.top();
-			auto scrollDateOpacity = _scrollDateOpacity.current(ms, _scrollDateShown ? 1. : 0.);
+			auto scrollDateOpacity = _scrollDateOpacity.value(_scrollDateShown ? 1. : 0.);
 			enumerateDates([&](not_null<Element*> view, int itemtop, int dateTop) {
 				// stop the enumeration if the date is above the painted rect
 				if (dateTop + dateHeight <= clip.top()) {
--- a/Telegram/SourceFiles/history/admin_log/history_admin_log_inner.h
+++ b/Telegram/SourceFiles/history/admin_log/history_admin_log_inner.h
@ -10,8 +10,9 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "history/view/history_view_element.h"
 #include "history/admin_log/history_admin_log_item.h"
 #include "history/admin_log/history_admin_log_section.h"
-#include "ui/widgets/tooltip.h"
 #include "ui/rp_widget.h"
+#include "ui/effects/animations.h"
+#include "ui/widgets/tooltip.h"
 #include "mtproto/sender.h"
 #include "base/timer.h"

@ -219,7 +220,7 @@ private:
 	int _visibleTopFromItem = 0;

 	bool _scrollDateShown = false;
-	Animation _scrollDateOpacity;
+	Ui::Animations::Simple _scrollDateOpacity;
 	SingleQueuedInvokation _scrollDateCheck;
 	base::Timer _scrollDateHideTimer;
 	Element *_scrollDateLastItem = nullptr;
--- a/Telegram/SourceFiles/history/admin_log/history_admin_log_section.cpp
+++ b/Telegram/SourceFiles/history/admin_log/history_admin_log_section.cpp
@ -11,6 +11,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "history/admin_log/history_admin_log_filter.h"
 #include "profile/profile_back_button.h"
 #include "core/shortcuts.h"
+#include "ui/effects/animations.h"
 #include "ui/widgets/scroll_area.h"
 #include "ui/widgets/shadow.h"
 #include "ui/widgets/buttons.h"
@ -77,7 +78,7 @@ private:
 	object_ptr<Ui::CrossButton> _cancel;
 	object_ptr<Ui::RoundButton> _filter;

-	Animation _searchShownAnimation;
+	Ui::Animations::Simple _searchShownAnimation;
 	bool _searchShown = false;
 	bool _animatingMode = false;
 	base::Timer _searchTimer;
@ -194,7 +195,7 @@ int FixedBar::resizeGetHeight(int newWidth) {

 	auto searchShownLeft = st::topBarArrowPadding.left();
 	auto searchHiddenLeft = filterLeft - _search->width();
-	auto searchShown = _searchShownAnimation.current(_searchShown ? 1. : 0.);
+	auto searchShown = _searchShownAnimation.value(_searchShown ? 1. : 0.);
 	auto searchCurrentLeft = anim::interpolate(searchHiddenLeft, searchShownLeft, searchShown);
 	_search->moveToLeft(searchCurrentLeft, 0);
 	_backButton->resizeToWidth(searchCurrentLeft);
--- a/Telegram/SourceFiles/history/feed/history_feed_section.cpp
+++ b/Telegram/SourceFiles/history/feed/history_feed_section.cpp
@ -230,7 +230,7 @@ void Widget::updateScrollDownPosition() {
 	auto top = anim::interpolate(
 		0,
 		_scrollDown->height() + st::historyToDownPosition.y(),
-		_scrollDownShown.current(_scrollDownIsShown ? 1. : 0.));
+		_scrollDownShown.value(_scrollDownIsShown ? 1. : 0.));
 	_scrollDown->moveToRight(
 		st::historyToDownPosition.x(),
 		_scroll->height() - top);
@ -241,7 +241,7 @@ void Widget::updateScrollDownPosition() {
 }

 void Widget::scrollDownAnimationFinish() {
-	_scrollDownShown.finish();
+	_scrollDownShown.stop();
 	updateScrollDownPosition();
 }

@ -536,9 +536,6 @@ void Widget::paintEvent(QPaintEvent *e) {
 	//	updateListSize();
 	//}

-	const auto ms = crl::now();
-	_scrollDownShown.step(ms);
-
 	SectionWidget::PaintBackground(this, e->rect());

 	if (_emptyTextView) {
--- a/Telegram/SourceFiles/history/feed/history_feed_section.h
+++ b/Telegram/SourceFiles/history/feed/history_feed_section.h
@ -7,6 +7,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 */
 #pragma once

+#include "ui/effects/animations.h"
 #include "history/view/history_view_list_widget.h"
 #include "window/section_widget.h"
 #include "window/section_memento.h"
@ -138,7 +139,7 @@ private:
 	std::optional<Data::MessagePosition> _nextAnimatedScrollPosition;
 	int _nextAnimatedScrollDelta = 0;

-	Animation _scrollDownShown;
+	Ui::Animations::Simple _scrollDownShown;
 	bool _scrollDownIsShown = false;
 	object_ptr<Ui::HistoryDownButton> _scrollDown;
 	std::shared_ptr<Window::DateClickHandler> _dateLink;
--- a/Telegram/SourceFiles/history/history_drag_area.cpp
+++ b/Telegram/SourceFiles/history/history_drag_area.cpp
@ -69,8 +69,7 @@ void DragArea::setText(const QString &text, const QString &subtext) {
 void DragArea::paintEvent(QPaintEvent *e) {
 	Painter p(this);

-	auto ms = crl::now();
-	auto opacity = _a_opacity.current(ms, _hiding ? 0. : 1.);
+	auto opacity = _a_opacity.value(_hiding ? 0. : 1.);
 	if (!_a_opacity.animating() && _hiding) {
 		return;
 	}
@ -85,7 +84,7 @@ void DragArea::paintEvent(QPaintEvent *e) {
 	Ui::Shadow::paint(p, inner, width(), st::boxRoundShadow);
 	App::roundRect(p, inner, st::boxBg, BoxCorners);

-	p.setPen(anim::pen(st::dragColor, st::dragDropColor, _a_in.current(ms, _in ? 1. : 0.)));
+	p.setPen(anim::pen(st::dragColor, st::dragDropColor, _a_in.value(_in ? 1. : 0.)));

 	p.setFont(st::dragFont);
 	p.drawText(QRect(0, (height() - st::dragHeight) / 2, width(), st::dragFont->height), _text, QTextOption(style::al_top));
@ -121,7 +120,7 @@ void DragArea::otherLeave() {
 }

 void DragArea::hideFast() {
-	_a_opacity.finish();
+	_a_opacity.stop();
 	hide();
 }

@ -142,7 +141,7 @@ void DragArea::hideStart() {
 void DragArea::hideFinish() {
 	hide();
 	_in = false;
-	_a_in.finish();
+	_a_in.stop();
 }

 void DragArea::showStart() {
--- a/Telegram/SourceFiles/history/history_drag_area.h
+++ b/Telegram/SourceFiles/history/history_drag_area.h
@ -8,6 +8,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #pragma once

 #include "ui/twidget.h"
+#include "ui/effects/animations.h"

 class DragArea : public TWidget {
 	Q_OBJECT
@ -59,8 +60,8 @@ private:
 	QPixmap _cache;
 	Fn<void(const QMimeData *data)> _droppedCallback;

-	Animation _a_opacity;
-	Animation _a_in;
+	Ui::Animations::Simple _a_opacity;
+	Ui::Animations::Simple _a_in;

 	QString _text, _subtext;

--- a/Telegram/SourceFiles/history/history_inner_widget.cpp
+++ b/Telegram/SourceFiles/history/history_inner_widget.cpp
@ -718,7 +718,7 @@ void HistoryInner::paintEvent(QPaintEvent *e) {
 			//int showFloatingBefore = height() - 2 * (_visibleAreaBottom - _visibleAreaTop) - dateHeight;


-			auto scrollDateOpacity = _scrollDateOpacity.current(ms, _scrollDateShown ? 1. : 0.);
+			auto scrollDateOpacity = _scrollDateOpacity.value(_scrollDateShown ? 1. : 0.);
 			enumerateDates([&](not_null<Element*> view, int itemtop, int dateTop) {
 				// stop the enumeration if the date is above the painted rect
 				if (dateTop + dateHeight <= clip.top()) {
@ -2471,7 +2471,7 @@ void HistoryInner::mouseActionUpdate() {
 		}

 		auto dateHeight = st::msgServicePadding.bottom() + st::msgServiceFont->height + st::msgServicePadding.top();
-		auto scrollDateOpacity = _scrollDateOpacity.current(_scrollDateShown ? 1. : 0.);
+		auto scrollDateOpacity = _scrollDateOpacity.value(_scrollDateShown ? 1. : 0.);
 		enumerateDates([&](not_null<Element*> view, int itemtop, int dateTop) {
 			// stop enumeration if the date is above our point
 			if (dateTop + dateHeight <= point.y()) {
--- a/Telegram/SourceFiles/history/history_inner_widget.h
+++ b/Telegram/SourceFiles/history/history_inner_widget.h
@ -9,6 +9,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL

 #include "base/timer.h"
 #include "ui/rp_widget.h"
+#include "ui/effects/animations.h"
 #include "ui/widgets/tooltip.h"
 #include "ui/widgets/scroll_area.h"
 #include "history/view/history_view_top_bar_widget.h"
@ -362,7 +363,7 @@ private:
 	int _visibleAreaBottom = 0;

 	bool _scrollDateShown = false;
-	Animation _scrollDateOpacity;
+	Ui::Animations::Simple _scrollDateOpacity;
 	SingleQueuedInvokation _scrollDateCheck;
 	base::Timer _scrollDateHideTimer;
 	Element *_scrollDateLastItem = nullptr;
--- a/Telegram/SourceFiles/history/history_item_components.cpp
+++ b/Telegram/SourceFiles/history/history_item_components.cpp
@ -541,21 +541,21 @@ int ReplyKeyboard::naturalHeight() const {
 	return (_rows.size() - 1) * _st->buttonSkip() + _rows.size() * _st->buttonHeight();
 }

-void ReplyKeyboard::paint(Painter &p, int outerWidth, const QRect &clip, crl::time ms) const {
+void ReplyKeyboard::paint(Painter &p, int outerWidth, const QRect &clip) const {
 	Assert(_st != nullptr);
 	Assert(_width > 0);

 	_st->startPaint(p);
-	for_const (auto &row, _rows) {
-		for_const (auto &button, row) {
-			QRect rect(button.rect);
+	for (const auto &row : _rows) {
+		for (const auto &button : row) {
+			const auto rect = button.rect;
 			if (rect.y() >= clip.y() + clip.height()) return;
 			if (rect.y() + rect.height() < clip.y()) continue;

 			// just ignore the buttons that didn't layout well
 			if (rect.x() + rect.width() > _width) break;

-			_st->paintButton(p, outerWidth, button, ms);
+			_st->paintButton(p, outerWidth, button);
 		}
 	}
 }
@ -694,12 +694,11 @@ int ReplyKeyboard::Style::buttonHeight() const {
 void ReplyKeyboard::Style::paintButton(
 		Painter &p,
 		int outerWidth,
-		const ReplyKeyboard::Button &button,
-		crl::time ms) const {
+		const ReplyKeyboard::Button &button) const {
 	const QRect &rect = button.rect;
 	paintButtonBg(p, rect, button.howMuchOver);
 	if (button.ripple) {
-		button.ripple->paint(p, rect.x(), rect.y(), outerWidth, ms);
+		button.ripple->paint(p, rect.x(), rect.y(), outerWidth);
 		if (button.ripple->empty()) {
 			button.ripple.reset();
 		}
--- a/Telegram/SourceFiles/history/history_item_components.h
+++ b/Telegram/SourceFiles/history/history_item_components.h
@ -278,7 +278,7 @@ public:
 	private:
 		const style::BotKeyboardButton *_st;

-		void paintButton(Painter &p, int outerWidth, const ReplyKeyboard::Button &button, crl::time ms) const;
+		void paintButton(Painter &p, int outerWidth, const ReplyKeyboard::Button &button) const;
 		friend class ReplyKeyboard;

 	};
@ -297,7 +297,7 @@ public:
 	int naturalWidth() const;
 	int naturalHeight() const;

-	void paint(Painter &p, int outerWidth, const QRect &clip, crl::time ms) const;
+	void paint(Painter &p, int outerWidth, const QRect &clip) const;
 	ClickHandlerPtr getLink(QPoint point) const;

 	void clickHandlerActiveChanged(const ClickHandlerPtr &p, bool active);
--- a/Telegram/SourceFiles/history/history_widget.cpp
+++ b/Telegram/SourceFiles/history/history_widget.cpp
@ -675,7 +675,7 @@ void HistoryWidget::animatedScrollToY(int scrollTo, HistoryItem *attachTo) {
 		return;
 	}

-	_scrollToAnimation.finish();
+	_scrollToAnimation.stop();
 	auto maxAnimatedDelta = _scroll->height();
 	auto transition = anim::sineInOut;
 	if (scrollTo > scrollTop + maxAnimatedDelta) {
@ -692,15 +692,25 @@ void HistoryWidget::animatedScrollToY(int scrollTo, HistoryItem *attachTo) {
 		// jump to the bottom of history in some updateHistoryGeometry() call.
 		synteticScrollToY(scrollTop);
 	}
-	_scrollToAnimation.start([this, itemId = attachTo->fullId()] { scrollToAnimationCallback(itemId); }, scrollTop - itemTop, scrollTo - itemTop, st::slideDuration, anim::sineInOut);
+	const auto itemId = attachTo->fullId();
+	const auto relativeFrom = scrollTop - itemTop;
+	const auto relativeTo = scrollTo - itemTop;
+	_scrollToAnimation.start(
+		[=] { scrollToAnimationCallback(itemId, relativeTo); },
+		relativeFrom,
+		relativeTo,
+		st::slideDuration,
+		anim::sineInOut);
 }

-void HistoryWidget::scrollToAnimationCallback(FullMsgId attachToId) {
+void HistoryWidget::scrollToAnimationCallback(
+		FullMsgId attachToId,
+		int relativeTo) {
 	auto itemTop = _list->itemTop(App::histItemById(attachToId));
 	if (itemTop < 0) {
-		_scrollToAnimation.finish();
+		_scrollToAnimation.stop();
 	} else {
-		synteticScrollToY(qRound(_scrollToAnimation.current()) + itemTop);
+		synteticScrollToY(qRound(_scrollToAnimation.value(relativeTo)) + itemTop);
 	}
 	if (!_scrollToAnimation.animating()) {
 		preloadHistoryByScroll();
@ -1346,7 +1356,7 @@ void HistoryWidget::setupShortcuts() {

 void HistoryWidget::clearReplyReturns() {
 	_replyReturns.clear();
-	_replyReturn = 0;
+	_replyReturn = nullptr;
 }

 void HistoryWidget::pushReplyReturn(not_null<HistoryItem*> item) {
@ -1575,7 +1585,7 @@ void HistoryWidget::showHistory(
 		destroyUnreadBar();
 		destroyPinnedBar();
 		_membersDropdown.destroy();
-		_scrollToAnimation.finish();
+		_scrollToAnimation.stop();
 		_history = _migrated = nullptr;
 		_list = nullptr;
 		_peer = nullptr;
@ -2924,7 +2934,7 @@ void HistoryWidget::showAnimated(
 		const Window::SectionSlideParams &params) {
 	_showDirection = direction;

-	_a_show.finish();
+	_a_show.stop();

 	_cacheUnder = params.oldContentCache;
 	show();
@ -2940,7 +2950,7 @@ void HistoryWidget::showAnimated(
 	if (_showDirection == Window::SlideDirection::FromLeft) {
 		std::swap(_cacheUnder, _cacheOver);
 	}
-	_a_show.start([this] { animationCallback(); }, 0., 1., st::slideDuration, Window::SlideAnimation::transition());
+	_a_show.start([=] { animationCallback(); }, 0., 1., st::slideDuration, Window::SlideAnimation::transition());
 	if (_history) {
 		_topBar->show();
 		_topBar->setAnimatingMode(true);
@ -2978,7 +2988,7 @@ void HistoryWidget::doneShow() {

 void HistoryWidget::finishAnimating() {
 	if (!_a_show.animating()) return;
-	_a_show.finish();
+	_a_show.stop();
 	_topShadow->setVisible(_peer != nullptr);
 	_topBar->setVisible(_peer != nullptr);
 	historyDownAnimationFinish();
@ -2986,12 +2996,12 @@ void HistoryWidget::finishAnimating() {
 }

 void HistoryWidget::historyDownAnimationFinish() {
-	_historyDownShown.finish();
+	_historyDownShown.stop();
 	updateHistoryDownPosition();
 }

 void HistoryWidget::unreadMentionsAnimationFinish() {
-	_unreadMentionsShown.finish();
+	_unreadMentionsShown.stop();
 	updateUnreadMentionsPosition();
 }

@ -4655,7 +4665,7 @@ void HistoryWidget::itemRemoved(not_null<const HistoryItem*> item) {
 	}
 	if (_kbReplyTo && item == _kbReplyTo) {
 		onKbToggle();
-		_kbReplyTo = 0;
+		_kbReplyTo = nullptr;
 	}
 	auto found = ranges::find(_toForward, item);
 	if (found != _toForward.end()) {
@ -4837,7 +4847,7 @@ void HistoryWidget::updateHistoryGeometry(bool initial, bool loadedDown, const S

 	if (initial) {
 		_historyInited = true;
-		_scrollToAnimation.finish();
+		_scrollToAnimation.stop();
 	}
 	auto newScrollTop = initial
 		? countInitialScrollTop()
@ -4938,7 +4948,9 @@ void HistoryWidget::updateBotKeyboard(History *h, bool force) {
 	} else if (_replyToId && _replyEditMsg) {
 		changed = _keyboard->updateMarkup(_replyEditMsg, force);
 	} else {
-		HistoryItem *keyboardItem = _history->lastKeyboardId ? App::histItemById(_channel, _history->lastKeyboardId) : nullptr;
+		const auto keyboardItem = _history->lastKeyboardId
+			? App::histItemById(_channel, _history->lastKeyboardId)
+			: nullptr;
 		changed = _keyboard->updateMarkup(keyboardItem, force);
 	}
 	updateCmdStartShown();
@ -4966,7 +4978,9 @@ void HistoryWidget::updateBotKeyboard(History *h, bool force) {
 			int32 maxh = hasMarkup ? qMin(_keyboard->height(), st::historyComposeFieldMaxHeight - (st::historyComposeFieldMaxHeight / 2)) : 0;
 			_field->setMaxHeight(st::historyComposeFieldMaxHeight - maxh);
 			_kbShown = hasMarkup;
-			_kbReplyTo = (_peer->isChat() || _peer->isChannel() || _keyboard->forceReply()) ? App::histItemById(_keyboard->forMsgId()) : 0;
+			_kbReplyTo = (_peer->isChat() || _peer->isChannel() || _keyboard->forceReply())
+				? App::histItemById(_keyboard->forMsgId())
+				: nullptr;
 			if (_kbReplyTo && !_replyToId) {
 				updateReplyToName();
 				updateReplyEditText(_kbReplyTo);
@ -4981,7 +4995,7 @@ void HistoryWidget::updateBotKeyboard(History *h, bool force) {
 			}
 			_field->setMaxHeight(st::historyComposeFieldMaxHeight);
 			_kbShown = false;
-			_kbReplyTo = 0;
+			_kbReplyTo = nullptr;
 			if (!readyToForward() && (!_previewData || _previewData->pendingTill < 0) && !_replyToId) {
 				_fieldBarCancel->hide();
 				updateMouseTracking();
@ -4997,7 +5011,7 @@ void HistoryWidget::updateBotKeyboard(History *h, bool force) {
 		}
 		_field->setMaxHeight(st::historyComposeFieldMaxHeight);
 		_kbShown = false;
-		_kbReplyTo = 0;
+		_kbReplyTo = nullptr;
 		if (!readyToForward() && (!_previewData || _previewData->pendingTill < 0) && !_replyToId && !_editMsgId) {
 			_fieldBarCancel->hide();
 			updateMouseTracking();
@ -5009,7 +5023,7 @@ void HistoryWidget::updateBotKeyboard(History *h, bool force) {

 void HistoryWidget::updateHistoryDownPosition() {
 	// _historyDown is a child widget of _scroll, not me.
-	auto top = anim::interpolate(0, _historyDown->height() + st::historyToDownPosition.y(), _historyDownShown.current(_historyDownIsShown ? 1. : 0.));
+	auto top = anim::interpolate(0, _historyDown->height() + st::historyToDownPosition.y(), _historyDownShown.value(_historyDownIsShown ? 1. : 0.));
 	_historyDown->moveToRight(st::historyToDownPosition.x(), _scroll->height() - top);
 	auto shouldBeHidden = !_historyDownIsShown && !_historyDownShown.animating();
 	if (shouldBeHidden != _historyDown->isHidden()) {
@ -5052,14 +5066,14 @@ void HistoryWidget::updateHistoryDownVisibility() {
 	auto historyDownIsShown = historyDownIsVisible();
 	if (_historyDownIsShown != historyDownIsShown) {
 		_historyDownIsShown = historyDownIsShown;
-		_historyDownShown.start([this] { updateHistoryDownPosition(); }, _historyDownIsShown ? 0. : 1., _historyDownIsShown ? 1. : 0., st::historyToDownDuration);
+		_historyDownShown.start([=] { updateHistoryDownPosition(); }, _historyDownIsShown ? 0. : 1., _historyDownIsShown ? 1. : 0., st::historyToDownDuration);
 	}
 }

 void HistoryWidget::updateUnreadMentionsPosition() {
 	// _unreadMentions is a child widget of _scroll, not me.
-	auto right = anim::interpolate(-_unreadMentions->width(), st::historyToDownPosition.x(), _unreadMentionsShown.current(_unreadMentionsIsShown ? 1. : 0.));
-	auto shift = anim::interpolate(0, _historyDown->height() + st::historyUnreadMentionsSkip, _historyDownShown.current(_historyDownIsShown ? 1. : 0.));
+	auto right = anim::interpolate(-_unreadMentions->width(), st::historyToDownPosition.x(), _unreadMentionsShown.value(_unreadMentionsIsShown ? 1. : 0.));
+	auto shift = anim::interpolate(0, _historyDown->height() + st::historyUnreadMentionsSkip, _historyDownShown.value(_historyDownIsShown ? 1. : 0.));
 	auto top = _scroll->height() - _unreadMentions->height() - st::historyToDownPosition.y() - shift;
 	_unreadMentions->moveToRight(right, top);
 	auto shouldBeHidden = !_unreadMentionsIsShown && !_unreadMentionsShown.animating();
@ -5087,7 +5101,7 @@ void HistoryWidget::updateUnreadMentionsVisibility() {
 	}
 	if (_unreadMentionsIsShown != unreadMentionsIsShown) {
 		_unreadMentionsIsShown = unreadMentionsIsShown;
-		_unreadMentionsShown.start([this] { updateUnreadMentionsPosition(); }, _unreadMentionsIsShown ? 0. : 1., _unreadMentionsIsShown ? 1. : 0., st::historyToDownDuration);
+		_unreadMentionsShown.start([=] { updateUnreadMentionsPosition(); }, _unreadMentionsIsShown ? 0. : 1., _unreadMentionsIsShown ? 1. : 0., st::historyToDownDuration);
 	}
 }

@ -6534,8 +6548,8 @@ void HistoryWidget::drawPinnedBar(Painter &p) {
 	}
 }

-bool HistoryWidget::paintShowAnimationFrame(crl::time ms) {
-	auto progress = _a_show.current(ms, 1.);
+bool HistoryWidget::paintShowAnimationFrame() {
+	auto progress = _a_show.value(1.);
 	if (!_a_show.animating()) {
 		return false;
 	}
@ -6560,10 +6574,7 @@ bool HistoryWidget::paintShowAnimationFrame(crl::time ms) {
 }

 void HistoryWidget::paintEvent(QPaintEvent *e) {
-	auto ms = crl::now();
-	_historyDownShown.step(ms);
-	_unreadMentionsShown.step(ms);
-	if (paintShowAnimationFrame(ms)) {
+	if (paintShowAnimationFrame()) {
 		return;
 	}
 	if (Ui::skipPaintEvent(this, e)) {
--- a/Telegram/SourceFiles/history/history_widget.h
+++ b/Telegram/SourceFiles/history/history_widget.h
@ -550,7 +550,7 @@ private:
 	void drawRecording(Painter &p, float64 recordActive);
 	void drawPinnedBar(Painter &p);
 	void drawRestrictedWrite(Painter &p, const QString &error);
-	bool paintShowAnimationFrame(crl::time ms);
+	bool paintShowAnimationFrame();

 	void updateMouseTracking();

@ -670,7 +670,7 @@ private:
 	int countAutomaticScrollTop();
 	void preloadHistoryByScroll();
 	void checkReplyReturns();
-	void scrollToAnimationCallback(FullMsgId attachToId);
+	void scrollToAnimationCallback(FullMsgId attachToId, int relativeTo);

 	bool readyToForward() const;
 	bool hasSilentToggle() const;
@ -707,13 +707,13 @@ private:

 	crl::time _lastUserScrolled = 0;
 	bool _synteticScrollEvent = false;
-	Animation _scrollToAnimation;
+	Ui::Animations::Simple _scrollToAnimation;

-	Animation _historyDownShown;
+	Ui::Animations::Simple _historyDownShown;
 	bool _historyDownIsShown = false;
 	object_ptr<Ui::HistoryDownButton> _historyDown;

-	Animation _unreadMentionsShown;
+	Ui::Animations::Simple _unreadMentionsShown;
 	bool _unreadMentionsIsShown = false;
 	object_ptr<Ui::HistoryDownButton> _unreadMentions;

@ -797,7 +797,7 @@ private:

 	QString _confirmSource;

-	Animation _a_show;
+	Ui::Animations::Simple _a_show;
 	Window::SlideDirection _showDirection;
 	QPixmap _cacheUnder, _cacheOver;

--- a/Telegram/SourceFiles/history/media/history_media_file.h
+++ b/Telegram/SourceFiles/history/media/history_media_file.h
@ -8,6 +8,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #pragma once

 #include "history/media/history_media.h"
+#include "ui/effects/animations.h"
 #include "ui/effects/radial_animation.h"

 class HistoryFileMedia : public HistoryMedia {
@ -73,9 +74,9 @@ protected:
 			&& _animation->radial.animating()
 			&& radialAnimationCallback(now);
 	}
-	bool isThumbAnimation(crl::time ms) const {
+	bool isThumbAnimation() const {
 		if (_animation) {
-			if (_animation->a_thumbOver.animating(ms)) {
+			if (_animation->a_thumbOver.animating()) {
 				return true;
 			}
 			checkAnimationFinished();
@ -93,7 +94,7 @@ protected:
 		: radial(std::forward<Callback>(radialCallback)) {
 		}

-		Animation a_thumbOver;
+		Ui::Animations::Simple a_thumbOver;
 		Ui::RadialAnimation radial;
 	};
 	mutable std::unique_ptr<AnimationData> _animation;
--- a/Telegram/SourceFiles/history/media/history_media_gif.cpp
+++ b/Telegram/SourceFiles/history/media/history_media_gif.cpp
@ -376,8 +376,8 @@ void HistoryGif::draw(Painter &p, const QRect &r, TextSelection selection, crl::
 		p.setPen(Qt::NoPen);
 		if (selected) {
 			p.setBrush(st::msgDateImgBgSelected);
-		} else if (isThumbAnimation(ms)) {
-			auto over = _animation->a_thumbOver.current();
+		} else if (isThumbAnimation()) {
+			auto over = _animation->a_thumbOver.value(1.);
 			p.setBrush(anim::brush(st::msgDateImgBg, st::msgDateImgBgOver, over));
 		} else {
 			auto over = ClickHandler::showAsActive(_data->loading() ? _cancell : _savel);
--- a/Telegram/SourceFiles/history/media/history_media_photo.cpp
+++ b/Telegram/SourceFiles/history/media/history_media_photo.cpp
@ -224,8 +224,8 @@ void HistoryPhoto::draw(Painter &p, const QRect &r, TextSelection selection, crl
 		p.setPen(Qt::NoPen);
 		if (selected) {
 			p.setBrush(st::msgDateImgBgSelected);
-		} else if (isThumbAnimation(ms)) {
-			auto over = _animation->a_thumbOver.current();
+		} else if (isThumbAnimation()) {
+			auto over = _animation->a_thumbOver.value(1.);
 			p.setBrush(anim::brush(st::msgDateImgBg, st::msgDateImgBgOver, over));
 		} else {
 			auto over = ClickHandler::showAsActive(_data->loading() ? _cancell : _savel);
@ -395,8 +395,8 @@ void HistoryPhoto::drawGrouped(
 		p.setPen(Qt::NoPen);
 		if (selected) {
 			p.setBrush(st::msgDateImgBgSelected);
-		} else if (isThumbAnimation(ms)) {
-			auto over = _animation->a_thumbOver.current();
+		} else if (isThumbAnimation()) {
+			auto over = _animation->a_thumbOver.value(1.);
 			p.setBrush(anim::brush(st::msgDateImgBg, st::msgDateImgBgOver, over));
 		} else {
 			auto over = ClickHandler::showAsActive(_data->loading() ? _cancell : _savel);
--- a/Telegram/SourceFiles/history/media/history_media_poll.cpp
+++ b/Telegram/SourceFiles/history/media/history_media_poll.cpp
@ -14,6 +14,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "history/view/history_view_cursor_state.h"
 #include "calls/calls_instance.h"
 #include "ui/text_options.h"
+#include "ui/effects/animations.h"
 #include "ui/effects/radial_animation.h"
 #include "ui/effects/ripple_animation.h"
 #include "data/data_media_types.h"
@ -138,7 +139,7 @@ struct HistoryPoll::AnswerAnimation {

 struct HistoryPoll::AnswersAnimation {
 	std::vector<AnswerAnimation> data;
-	Animation progress;
+	Ui::Animations::Simple progress;
 };

 struct HistoryPoll::SendingAnimation {
@ -512,7 +513,7 @@ void HistoryPoll::draw(Painter &p, const QRect &r, TextSelection selection, crl:
 	tshift += st::msgDateFont->height + st::historyPollAnswersSkip;

 	const auto progress = _answersAnimation
-		? _answersAnimation->progress.current(ms, 1.)
+		? _answersAnimation->progress.value(1.)
 		: 1.;
 	if (progress == 1.) {
 		resetAnswersAnimation();
@ -538,8 +539,7 @@ void HistoryPoll::draw(Painter &p, const QRect &r, TextSelection selection, crl:
 			tshift,
 			paintw,
 			width(),
-			selection,
-			ms);
+			selection);
 		tshift += height;
 	}
 	if (!_totalVotesLabel.isEmpty()) {
@ -577,8 +577,7 @@ int HistoryPoll::paintAnswer(
 		int top,
 		int width,
 		int outerWidth,
-		TextSelection selection,
-		crl::time ms) const {
+		TextSelection selection) const {
 	const auto height = countAnswerHeight(answer, width);
 	const auto outbg = _parent->hasOutLayout();
 	const auto aleft = left + st::historyPollAnswerPadding.left();
@ -588,7 +587,7 @@ int HistoryPoll::paintAnswer(

 	if (answer.ripple) {
 		p.setOpacity(st::historyPollRippleOpacity);
-		answer.ripple->paint(p, left - st::msgPadding.left(), top, outerWidth, ms);
+		answer.ripple->paint(p, left - st::msgPadding.left(), top, outerWidth);
 		if (answer.ripple->empty()) {
 			answer.ripple.reset();
 		}
--- a/Telegram/SourceFiles/history/media/history_media_poll.h
+++ b/Telegram/SourceFiles/history/media/history_media_poll.h
@ -79,8 +79,7 @@ private:
 		int top,
 		int width,
 		int outerWidth,
-		TextSelection selection,
-		crl::time ms) const;
+		TextSelection selection) const;
 	void paintRadio(
 		Painter &p,
 		const Answer &answer,
--- a/Telegram/SourceFiles/history/media/history_media_video.cpp
+++ b/Telegram/SourceFiles/history/media/history_media_video.cpp
@ -222,8 +222,8 @@ void HistoryVideo::draw(Painter &p, const QRect &r, TextSelection selection, crl
 	p.setPen(Qt::NoPen);
 	if (selected) {
 		p.setBrush(st::msgDateImgBgSelected);
-	} else if (isThumbAnimation(ms)) {
-		auto over = _animation->a_thumbOver.current();
+	} else if (isThumbAnimation()) {
+		auto over = _animation->a_thumbOver.value(1.);
 		p.setBrush(anim::brush(st::msgDateImgBg, st::msgDateImgBgOver, over));
 	} else {
 		bool over = ClickHandler::showAsActive((_data->loading() || _data->uploading()) ? _cancell : _savel);
@ -431,8 +431,8 @@ void HistoryVideo::drawGrouped(
 	p.setPen(Qt::NoPen);
 	if (selected) {
 		p.setBrush(st::msgDateImgBgSelected);
-	} else if (isThumbAnimation(ms)) {
-		auto over = _animation->a_thumbOver.current();
+	} else if (isThumbAnimation()) {
+		auto over = _animation->a_thumbOver.value(1.);
 		p.setBrush(anim::brush(st::msgDateImgBg, st::msgDateImgBgOver, over));
 	} else {
 		auto over = ClickHandler::showAsActive(_data->loading() ? _cancell : _savel);
--- a/Telegram/SourceFiles/history/media/history_media_wall_paper.cpp
+++ b/Telegram/SourceFiles/history/media/history_media_wall_paper.cpp
@ -137,8 +137,8 @@ void HistoryWallPaper::draw(Painter &p, const QRect &r, TextSelection selection,
 		p.setPen(Qt::NoPen);
 		if (selected) {
 			p.setBrush(st::msgDateImgBgSelected);
-		} else if (isThumbAnimation(ms)) {
-			auto over = _animation->a_thumbOver.current();
+		} else if (isThumbAnimation()) {
+			auto over = _animation->a_thumbOver.value(1.);
 			p.setBrush(anim::brush(st::msgDateImgBg, st::msgDateImgBgOver, over));
 		} else {
 			auto over = ClickHandler::showAsActive(_data->loading() ? _cancell : _openl);
--- a/Telegram/SourceFiles/history/view/history_view_list_widget.cpp
+++ b/Telegram/SourceFiles/history/view/history_view_list_widget.cpp
@ -369,7 +369,7 @@ void ListWidget::animatedScrollTo(
 		Data::MessagePosition attachPosition,
 		int delta,
 		AnimatedScroll type) {
-	_scrollToAnimation.finish();
+	_scrollToAnimation.stop();
 	if (!delta || _items.empty()) {
 		_delegate->listScrollTo(scrollTop);
 		return;
@ -388,20 +388,23 @@ void ListWidget::animatedScrollTo(
 	const auto relativeStart = initial - attachToTop;
 	const auto relativeFinish = scrollTop - attachToTop;
 	_scrollToAnimation.start(
-		[=] { scrollToAnimationCallback(attachToId); },
+		[=] { scrollToAnimationCallback(attachToId, relativeFinish); },
 		relativeStart,
 		relativeFinish,
 		st::slideDuration,
 		transition);
 }

-void ListWidget::scrollToAnimationCallback(FullMsgId attachToId) {
+void ListWidget::scrollToAnimationCallback(
+		FullMsgId attachToId,
+		int relativeTo) {
 	const auto attachTo = App::histItemById(attachToId);
 	const auto attachToView = viewForItem(attachTo);
 	if (!attachToView) {
-		_scrollToAnimation.finish();
+		_scrollToAnimation.stop();
 	} else {
-		const auto current = int(std::round(_scrollToAnimation.current()));
+		const auto current = int(std::round(_scrollToAnimation.value(
+			relativeTo)));
 		_delegate->listScrollTo(itemTop(attachToView) + current);
 	}
 }
@ -1326,7 +1329,7 @@ void ListWidget::paintEvent(QPaintEvent *e) {
 		});

 		auto dateHeight = st::msgServicePadding.bottom() + st::msgServiceFont->height + st::msgServicePadding.top();
-		auto scrollDateOpacity = _scrollDateOpacity.current(ms, _scrollDateShown ? 1. : 0.);
+		auto scrollDateOpacity = _scrollDateOpacity.value(_scrollDateShown ? 1. : 0.);
 		enumerateDates([&](not_null<Element*> view, int itemtop, int dateTop) {
 			// stop the enumeration if the date is above the painted rect
 			if (dateTop + dateHeight <= clip.top()) {
@ -1426,7 +1429,7 @@ TextWithEntities ListWidget::getSelectedText() const {
 		part.text.reserve(size);
 		part.text.append(item->author()->name).append(time);
 		TextUtilities::Append(part, std::move(unwrapped));
-		texts.push_back(std::make_pair(std::move(item), std::move(part)));
+		texts.emplace_back(std::move(item), std::move(part));
 		fullSize += size;
 	};
 	const auto addItem = [&](not_null<HistoryItem*> item) {
@ -2092,7 +2095,7 @@ void ListWidget::mouseActionUpdate() {
 		const auto dateHeight = st::msgServicePadding.bottom()
 			+ st::msgServiceFont->height
 			+ st::msgServicePadding.top();
-		const auto scrollDateOpacity = _scrollDateOpacity.current(_scrollDateShown ? 1. : 0.);
+		const auto scrollDateOpacity = _scrollDateOpacity.value(_scrollDateShown ? 1. : 0.);
 		enumerateDates([&](not_null<Element*> view, int itemtop, int dateTop) {
 			// stop enumeration if the date is above our point
 			if (dateTop + dateHeight <= point.y()) {
--- a/Telegram/SourceFiles/history/view/history_view_list_widget.h
+++ b/Telegram/SourceFiles/history/view/history_view_list_widget.h
@ -7,8 +7,9 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 */
 #pragma once

-#include "ui/widgets/tooltip.h"
 #include "ui/rp_widget.h"
+#include "ui/effects/animations.h"
+#include "ui/widgets/tooltip.h"
 #include "mtproto/sender.h"
 #include "base/timer.h"
 #include "data/data_messages.h"
@ -381,7 +382,7 @@ private:
 		not_null<const Element*> view) const;
 	void checkUnreadBarCreation();
 	void applyUpdatedScrollState();
-	void scrollToAnimationCallback(FullMsgId attachToId);
+	void scrollToAnimationCallback(FullMsgId attachToId, int relativeTo);

 	void updateHighlightedMessage();

@ -437,10 +438,10 @@ private:
 	Element *_visibleTopItem = nullptr;
 	int _visibleTopFromItem = 0;
 	ScrollTopState _scrollTopState;
-	Animation _scrollToAnimation;
+	Ui::Animations::Simple _scrollToAnimation;

 	bool _scrollDateShown = false;
-	Animation _scrollDateOpacity;
+	Ui::Animations::Simple _scrollDateOpacity;
 	SingleQueuedInvokation _scrollDateCheck;
 	base::Timer _scrollDateHideTimer;
 	Element *_scrollDateLastItem = nullptr;
--- a/Telegram/SourceFiles/history/view/history_view_message.cpp
+++ b/Telegram/SourceFiles/history/view/history_view_message.cpp
@ -421,7 +421,7 @@ void Message::draw(
 		g.setHeight(g.height() - keyboardHeight);
 		auto keyboardPosition = QPoint(g.left(), g.top() + g.height() + st::msgBotKbButton.margin);
 		p.translate(keyboardPosition);
-		keyboard->paint(p, g.width(), clip.translated(-keyboardPosition), ms);
+		keyboard->paint(p, g.width(), clip.translated(-keyboardPosition));
 		p.translate(-keyboardPosition);
 	}

--- a/Telegram/SourceFiles/history/view/history_view_top_bar_widget.cpp
+++ b/Telegram/SourceFiles/history/view/history_view_top_bar_widget.cpp
@ -286,20 +286,17 @@ void TopBarWidget::paintEvent(QPaintEvent *e) {
 	}
 	Painter p(this);

-	auto ms = crl::now();
-	_forward->stepNumbersAnimation(ms);
-	_delete->stepNumbersAnimation(ms);
 	auto hasSelected = (_selectedCount > 0);
-	auto selectedButtonsTop = countSelectedButtonsTop(_selectedShown.current(crl::now(), hasSelected ? 1. : 0.));
+	auto selectedButtonsTop = countSelectedButtonsTop(_selectedShown.value(hasSelected ? 1. : 0.));

 	p.fillRect(QRect(0, 0, width(), st::topBarHeight), st::topBarBg);
 	if (selectedButtonsTop < 0) {
 		p.translate(0, selectedButtonsTop + st::topBarHeight);
-		paintTopBar(p, ms);
+		paintTopBar(p);
 	}
 }

-void TopBarWidget::paintTopBar(Painter &p, crl::time ms) {
+void TopBarWidget::paintTopBar(Painter &p) {
 	if (!_activeChat) {
 		return;
 	}
@ -339,7 +336,7 @@ void TopBarWidget::paintTopBar(Painter &p, crl::time ms) {
 		history->peer->dialogName().drawElided(p, nameleft, nametop, namewidth);

 		p.setFont(st::dialogsTextFont);
-		if (paintConnectingState(p, nameleft, statustop, width(), ms)) {
+		if (paintConnectingState(p, nameleft, statustop, width())) {
 			return;
 		} else if (history->paintSendAction(
 				p,
@ -348,7 +345,7 @@ void TopBarWidget::paintTopBar(Painter &p, crl::time ms) {
 				namewidth,
 				width(),
 				st::historyStatusFgTyping,
-				ms)) {
+				crl::now())) {
 			return;
 		} else {
 			paintStatus(p, nameleft, statustop, namewidth, width());
@ -360,8 +357,7 @@ bool TopBarWidget::paintConnectingState(
 		Painter &p,
 		int left,
 		int top,
-		int outerWidth,
-		crl::time ms) {
+		int outerWidth) {
 	if (!_connecting) {
 		return false;
 	}
@ -485,7 +481,7 @@ int TopBarWidget::countSelectedButtonsTop(float64 selectedShown) {

 void TopBarWidget::updateControlsGeometry() {
 	auto hasSelected = (_selectedCount > 0);
-	auto selectedButtonsTop = countSelectedButtonsTop(_selectedShown.current(hasSelected ? 1. : 0.));
+	auto selectedButtonsTop = countSelectedButtonsTop(_selectedShown.value(hasSelected ? 1. : 0.));
 	auto otherButtonsTop = selectedButtonsTop + st::topBarHeight;
 	auto buttonsLeft = st::topBarActionSkip + (Adaptive::OneColumn() ? 0 : st::lineWidth);
 	auto buttonsWidth = _forward->contentWidth() + _delete->contentWidth() + _clear->width();
@ -541,7 +537,7 @@ void TopBarWidget::updateControlsGeometry() {
 }

 void TopBarWidget::finishAnimating() {
-	_selectedShown.finish();
+	_selectedShown.stop();
 	updateControlsVisibility();
 }

--- a/Telegram/SourceFiles/history/view/history_view_top_bar_widget.h
+++ b/Telegram/SourceFiles/history/view/history_view_top_bar_widget.h
@ -8,6 +8,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #pragma once

 #include "ui/rp_widget.h"
+#include "ui/effects/animations.h"
 #include "base/timer.h"
 #include "dialogs/dialogs_key.h"

@ -86,19 +87,14 @@ private:
 	int countSelectedButtonsTop(float64 selectedShown);
 	void connectingAnimationCallback();

-	void paintTopBar(Painter &p, crl::time ms);
+	void paintTopBar(Painter &p);
 	void paintStatus(
 		Painter &p,
 		int left,
 		int top,
 		int availableWidth,
 		int outerWidth);
-	bool paintConnectingState(
-		Painter &p,
-		int left,
-		int top,
-		int outerWidth,
-		crl::time ms);
+	bool paintConnectingState(Painter &p, int left, int top, int outerWidth);
 	QRect getMembersShowAreaGeometry() const;
 	void updateMembersShowArea();
 	void updateOnlineDisplay();
@ -118,7 +114,7 @@ private:
 	bool _canDelete = false;
 	bool _canForward = false;

-	Animation _selectedShown;
+	Ui::Animations::Simple _selectedShown;

 	object_ptr<Ui::RoundButton> _clear;
 	object_ptr<Ui::RoundButton> _forward, _delete;
--- a/Telegram/SourceFiles/info/feed/info_feed_channels.cpp
+++ b/Telegram/SourceFiles/info/feed/info_feed_channels.cpp
@ -218,7 +218,7 @@ void Channels::updateHeaderControlsGeometry(int newWidth) {
 	//auto searchShownLeft = st::infoIconPosition.x()
 	//	- st::infoMembersSearch.iconPosition.x();
 	//auto searchHiddenLeft = availableWidth - _search->width();
-	//auto searchShown = _searchShownAnimation.current(_searchShown ? 1. : 0.);
+	//auto searchShown = _searchShownAnimation.value(_searchShown ? 1. : 0.);
 	//auto searchCurrentLeft = anim::interpolate(
 	//	searchHiddenLeft,
 	//	searchShownLeft,
--- a/Telegram/SourceFiles/info/feed/info_feed_channels_controllers.cpp
+++ b/Telegram/SourceFiles/info/feed/info_feed_channels_controllers.cpp
@ -39,7 +39,6 @@ public:
 	QMargins actionMargins() const override;
 	void paintAction(
 		Painter &p,
-		crl::time ms,
 		int x,
 		int y,
 		int outerWidth,
@ -77,7 +76,6 @@ QMargins ChannelsController::Row::actionMargins() const {

 void ChannelsController::Row::paintAction(
 		Painter &p,
-		crl::time ms,
 		int x,
 		int y,
 		int outerWidth,
--- a/Telegram/SourceFiles/info/info_top_bar.cpp
+++ b/Telegram/SourceFiles/info/info_top_bar.cpp
@ -356,8 +356,7 @@ void TopBar::updateSelectionControlsGeometry(int newWidth) {
 void TopBar::paintEvent(QPaintEvent *e) {
 	Painter p(this);

-	auto ms = crl::now();
-	auto highlight = _a_highlight.current(ms, _highlight ? 1. : 0.);
+	auto highlight = _a_highlight.value(_highlight ? 1. : 0.);
 	if (_highlight && !_a_highlight.animating()) {
 		_highlight = false;
 		startHighlightAnimation();
--- a/Telegram/SourceFiles/info/info_top_bar.h
+++ b/Telegram/SourceFiles/info/info_top_bar.h
@ -9,6 +9,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL

 #include "ui/rp_widget.h"
 #include "ui/wrap/fade_wrap.h"
+#include "ui/effects/animations.h"
 #include "ui/effects/numbers_animation.h"
 #include "info/info_wrap_widget.h"

@ -130,7 +131,7 @@ private:
 	void registerToggleControlCallback(Widget *widget, IsVisible &&callback);

 	const style::InfoTopBar &_st;
-	Animation _a_highlight;
+	Ui::Animations::Simple _a_highlight;
 	bool _highlight = false;
 	QPointer<Ui::FadeWrap<Ui::IconButton>> _back;
 	std::vector<base::unique_qptr<Ui::RpWidget>> _buttons;
--- a/Telegram/SourceFiles/info/info_wrap_widget.h
+++ b/Telegram/SourceFiles/info/info_wrap_widget.h
@ -7,9 +7,8 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 */
 #pragma once

-#include <rpl/variable.h>
-#include <rpl/event_stream.h>
 #include "window/section_widget.h"
+#include "ui/effects/animations.h"

 namespace Storage {
 enum class SharedMediaType : signed char;
@ -209,7 +208,7 @@ private:
 	//object_ptr<Ui::SettingsSlider> _topTabs = { nullptr };
 	object_ptr<TopBar> _topBar = { nullptr };
 	object_ptr<Ui::RpWidget> _topBarSurrogate = { nullptr };
-	Animation _topBarOverrideAnimation;
+	Ui::Animations::Simple _topBarOverrideAnimation;
 	bool _topBarOverrideShown = false;

 	object_ptr<Ui::FadeShadow> _topShadow;
--- a/Telegram/SourceFiles/info/profile/info_profile_button.cpp
+++ b/Telegram/SourceFiles/info/profile/info_profile_button.cpp
@ -77,11 +77,10 @@ void Button::setColorOverride(std::optional<QColor> textColorOverride) {
 void Button::paintEvent(QPaintEvent *e) {
 	Painter p(this);

-	auto ms = crl::now();
 	auto paintOver = (isOver() || isDown()) && !isDisabled();
 	p.fillRect(e->rect(), paintOver ? _st.textBgOver : _st.textBg);

-	paintRipple(p, 0, 0, ms);
+	paintRipple(p, 0, 0);

 	auto outerw = width();
 	p.setFont(_st.font);
@ -99,7 +98,7 @@ void Button::paintEvent(QPaintEvent *e) {

 	if (_toggle) {
 		auto rect = toggleRect();
-		_toggle->paint(p, rect.left(), rect.top(), outerw, ms);
+		_toggle->paint(p, rect.left(), rect.top(), outerw);
 	}
 }

--- a/Telegram/SourceFiles/info/profile/info_profile_cover.cpp
+++ b/Telegram/SourceFiles/info/profile/info_profile_cover.cpp
@ -43,8 +43,7 @@ public:
 		Painter &p,
 		int left,
 		int top,
-		int outerWidth,
-		crl::time ms) override;
+		int outerWidth) override;
 	QImage prepareRippleMask() const override;
 	bool checkRippleStartPosition(QPoint position) const override;

@ -71,8 +70,7 @@ void SectionToggle::paint(
 		Painter &p,
 		int left,
 		int top,
-		int outerWidth,
-		crl::time ms) {
+		int outerWidth) {
 	auto sqrt2 = sqrt(2.);
 	auto vLeft = rtlpoint(left + _st.skip, 0, outerWidth).x() + 0.;
 	auto vTop = top + _st.skip + 0.;
@ -89,7 +87,7 @@ void SectionToggle::paint(
 		{ vLeft + (vWidth / 2.), vTop + (vHeight * 3. / 4.) + vStroke },
 	} };

-	auto toggled = currentAnimationValue(ms);
+	auto toggled = currentAnimationValue();
 	auto alpha = (toggled - 1.) * M_PI_2;
 	auto cosalpha = cos(alpha);
 	auto sinalpha = sin(alpha);
--- a/Telegram/SourceFiles/info/profile/info_profile_members.cpp
+++ b/Telegram/SourceFiles/info/profile/info_profile_members.cpp
@ -270,7 +270,7 @@ void Members::updateHeaderControlsGeometry(int newWidth) {
 	//auto searchShownLeft = st::infoIconPosition.x()
 	//	- st::infoMembersSearch.iconPosition.x();
 	//auto searchHiddenLeft = availableWidth - _search->width();
-	//auto searchShown = _searchShownAnimation.current(_searchShown ? 1. : 0.);
+	//auto searchShown = _searchShownAnimation.value(_searchShown ? 1. : 0.);
 	//auto searchCurrentLeft = anim::interpolate(
 	//	searchHiddenLeft,
 	//	searchShownLeft,
--- a/Telegram/SourceFiles/info/profile/info_profile_members.h
+++ b/Telegram/SourceFiles/info/profile/info_profile_members.h
@ -117,7 +117,7 @@ private:
 	Ui::IconButton *_search = nullptr;
 	//Ui::CrossButton *_cancelSearch = nullptr;

-	//Animation _searchShownAnimation;
+	//Ui::Animations::Simple _searchShownAnimation;
 	//bool _searchShown = false;
 	//base::Timer _searchTimer;

--- a/Telegram/SourceFiles/info/profile/info_profile_members_controllers.cpp
+++ b/Telegram/SourceFiles/info/profile/info_profile_members_controllers.cpp
@ -49,7 +49,6 @@ QSize MemberListRow::actionSize() const {

 void MemberListRow::paintAction(
 		Painter &p,
-		crl::time ms,
 		int x,
 		int y,
 		int outerWidth,
--- a/Telegram/SourceFiles/info/profile/info_profile_members_controllers.h
+++ b/Telegram/SourceFiles/info/profile/info_profile_members_controllers.h
@ -34,7 +34,6 @@ public:
 	QSize actionSize() const override;
 	void paintAction(
 		Painter &p,
-		crl::time ms,
 		int x,
 		int y,
 		int outerWidth,
--- a/Telegram/SourceFiles/inline_bots/inline_bot_layout_internal.cpp
+++ b/Telegram/SourceFiles/inline_bots/inline_bot_layout_internal.cpp
@ -174,8 +174,8 @@ void Gif::paint(Painter &p, const QRect &clip, const PaintContext *context) cons

 	if (radial || _gif.isBad() || (!_gif && !loaded && !loading)) {
 		auto radialOpacity = (radial && loaded) ? _animation->radial.opacity() : 1.;
-		if (_animation && _animation->_a_over.animating(context->ms)) {
-			auto over = _animation->_a_over.current();
+		if (_animation && _animation->_a_over.animating()) {
+			auto over = _animation->_a_over.value(1.);
 			p.fillRect(r, anim::brush(st::msgDateImgBg, st::msgDateImgBgOver, over));
 		} else {
 			auto over = (_state & StateFlag::Over);
@ -400,7 +400,7 @@ void Sticker::preload() const {
 void Sticker::paint(Painter &p, const QRect &clip, const PaintContext *context) const {
 	bool loaded = getShownDocument()->loaded();

-	auto over = _a_over.current(context->ms, _active ? 1. : 0.);
+	auto over = _a_over.value(_active ? 1. : 0.);
 	if (over > 0) {
 		p.setOpacity(over);
 		App::roundRect(p, QRect(QPoint(0, 0), st::stickerPanSize), st::emojiPanHover, StickerHoverCorners);
@ -755,8 +755,8 @@ void File::paint(Painter &p, const QRect &clip, const PaintContext *context) con

 	auto inner = rtlrect(0, st::inlineRowMargin, st::msgFileSize, st::msgFileSize, _width);
 	p.setPen(Qt::NoPen);
-	if (isThumbAnimation(context->ms)) {
-		auto over = _animation->a_thumbOver.current();
+	if (isThumbAnimation()) {
+		auto over = _animation->a_thumbOver.value(1.);
 		p.setBrush(anim::brush(st::msgFileInBg, st::msgFileInBgOver, over));
 	} else {
 		bool over = ClickHandler::showAsActive(_document->loading() ? _cancel : _open);
--- a/Telegram/SourceFiles/inline_bots/inline_bot_layout_internal.h
+++ b/Telegram/SourceFiles/inline_bots/inline_bot_layout_internal.h
@ -9,6 +9,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL

 #include "base/flags.h"
 #include "inline_bots/inline_bot_layout_item.h"
+#include "ui/effects/animations.h"
 #include "ui/effects/radial_animation.h"
 #include "ui/text/text.h"

@ -103,11 +104,11 @@ private:
 		: radial(std::forward<Callback>(callback)) {
 		}
 		bool over = false;
-		Animation _a_over;
+		Ui::Animations::Simple _a_over;
 		Ui::RadialAnimation radial;
 	};
 	mutable std::unique_ptr<AnimationData> _animation;
-	mutable Animation _a_deleteOver;
+	mutable Ui::Animations::Simple _a_deleteOver;

 };

@ -174,7 +175,7 @@ public:
 private:
 	QSize getThumbSize() const;

-	mutable Animation _a_over;
+	mutable Ui::Animations::Simple _a_over;
 	mutable bool _active = false;

 	mutable QPixmap _thumb;
@ -261,9 +262,9 @@ private:
 			&& _animation->radial.animating()
 			&& radialAnimationCallback(now);
 	}
-	bool isThumbAnimation(crl::time ms) const {
+	bool isThumbAnimation() const {
 		if (_animation) {
-			if (_animation->a_thumbOver.animating(ms)) {
+			if (_animation->a_thumbOver.animating()) {
 				return true;
 			}
 			checkAnimationFinished();
@ -276,7 +277,7 @@ private:
 		AnimationData(Callback &&radialCallback)
 		: radial(std::forward<Callback>(radialCallback)) {
 		}
-		Animation a_thumbOver;
+		Ui::Animations::Simple a_thumbOver;
 		Ui::RadialAnimation radial;
 	};
 	mutable std::unique_ptr<AnimationData> _animation;
--- a/Telegram/SourceFiles/inline_bots/inline_results_widget.cpp
+++ b/Telegram/SourceFiles/inline_bots/inline_results_widget.cpp
@ -804,12 +804,9 @@ void Widget::onWndActiveChanged() {
 void Widget::paintEvent(QPaintEvent *e) {
 	Painter p(this);

-	auto ms = crl::now();
+	auto opacityAnimating = _a_opacity.animating();

-	// This call can finish _a_show animation and destroy _showAnimation.
-	auto opacityAnimating = _a_opacity.animating(ms);
-
-	auto showAnimating = _a_show.animating(ms);
+	auto showAnimating = _a_show.animating();
 	if (_showAnimation && !showAnimating) {
 		_showAnimation.reset();
 		if (!opacityAnimating) {
@ -819,11 +816,11 @@ void Widget::paintEvent(QPaintEvent *e) {

 	if (showAnimating) {
 		Assert(_showAnimation != nullptr);
-		if (auto opacity = _a_opacity.current(_hiding ? 0. : 1.)) {
-			_showAnimation->paintFrame(p, 0, 0, width(), _a_show.current(1.), opacity);
+		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.current(_hiding ? 0. : 1.));
+		p.setOpacity(_a_opacity.value(_hiding ? 0. : 1.));
 		p.drawPixmap(0, 0, _cache);
 	} else if (_hiding || isHidden()) {
 		hideFinished();
@ -853,7 +850,7 @@ void Widget::hideFast() {
 	if (isHidden()) return;

 	_hiding = false;
-	_a_opacity.finish();
+	_a_opacity.stop();
 	hideFinished();
 }

@ -936,7 +933,7 @@ void Widget::hideFinished() {
 	_controller->disableGifPauseReason(Window::GifPauseReason::InlineResults);

 	_inner->hideFinish(true);
-	_a_show.finish();
+	_a_show.stop();
 	_showAnimation.reset();
 	_cache = QPixmap();
 	_horizontal = false;
--- a/Telegram/SourceFiles/inline_bots/inline_results_widget.h
+++ b/Telegram/SourceFiles/inline_bots/inline_results_widget.h
@ -9,6 +9,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL

 #include "ui/twidget.h"
 #include "ui/abstract_button.h"
+#include "ui/effects/animations.h"
 #include "ui/effects/panel_animation.h"
 #include "base/timer.h"
 #include "mtproto/sender.h"
@ -245,11 +246,11 @@ private:
 	int _bottom = 0;

 	std::unique_ptr<Ui::PanelAnimation> _showAnimation;
-	Animation _a_show;
+	Ui::Animations::Simple _a_show;

 	bool _hiding = false;
 	QPixmap _cache;
-	Animation _a_opacity;
+	Ui::Animations::Simple _a_opacity;
 	bool _inPanelGrab = false;

 	object_ptr<Ui::ScrollArea> _scroll;
--- a/Telegram/SourceFiles/intro/introwidget.cpp
+++ b/Telegram/SourceFiles/intro/introwidget.cpp
@ -489,12 +489,12 @@ void Widget::showAnimated(const QPixmap &bgAnimCache, bool back) {

 	(_showBack ? _cacheOver : _cacheUnder) = bgAnimCache;

-	_a_show.finish();
+	_a_show.stop();
 	showControls();
 	(_showBack ? _cacheUnder : _cacheOver) = Ui::GrabWidget(this);
 	hideControls();

-	_a_show.start([this] { animationCallback(); }, 0., 1., st::slideDuration, Window::SlideAnimation::transition());
+	_a_show.start([=] { animationCallback(); }, 0., 1., st::slideDuration, Window::SlideAnimation::transition());

 	show();
 }
@ -513,16 +513,12 @@ void Widget::paintEvent(QPaintEvent *e) {
 	bool trivial = (rect() == e->rect());
 	setMouseTracking(true);

-	if (_coverShownAnimation.animating()) {
-		_coverShownAnimation.step(crl::now());
-	}
-
 	QPainter p(this);
 	if (!trivial) {
 		p.setClipRect(e->rect());
 	}
 	p.fillRect(e->rect(), st::windowBg);
-	auto progress = _a_show.current(crl::now(), 1.);
+	auto progress = _a_show.value(1.);
 	if (_a_show.animating()) {
 		auto coordUnder = _showBack ? anim::interpolate(-st::slideShift, 0, progress) : anim::interpolate(0, -st::slideShift, progress);
 		auto coordOver = _showBack ? anim::interpolate(0, width(), progress) : anim::interpolate(width(), 0, progress);
@ -559,7 +555,7 @@ void Widget::resizeEvent(QResizeEvent *e) {
 }

 void Widget::updateControlsGeometry() {
-	auto shown = _coverShownAnimation.current(1.);
+	auto shown = _coverShownAnimation.value(1.);

 	auto controlsTopTo = getStep()->hasCover() ? st::introCoverHeight : 0;
 	auto controlsTop = anim::interpolate(_controlsTopFrom, controlsTopTo, shown);
@ -701,7 +697,7 @@ void Widget::Step::refreshLang() {
 }

 void Widget::Step::showFinished() {
-	_a_show.finish();
+	_a_show.stop();
 	_coverAnimation = CoverAnimation();
 	_slideAnimation.reset();
 	prepareCoverMask();
@ -710,7 +706,7 @@ void Widget::Step::showFinished() {

 bool Widget::Step::paintAnimated(Painter &p, QRect clip) {
 	if (_slideAnimation) {
-		_slideAnimation->paintFrame(p, (width() - st::introStepWidth) / 2, contentTop(), width(), crl::now());
+		_slideAnimation->paintFrame(p, (width() - st::introStepWidth) / 2, contentTop(), width());
 		if (!_slideAnimation->animating()) {
 			showFinished();
 			return false;
@ -718,7 +714,7 @@ bool Widget::Step::paintAnimated(Painter &p, QRect clip) {
 		return true;
 	}

-	auto dt = _a_show.current(crl::now(), 1.);
+	auto dt = _a_show.value(1.);
 	if (!_a_show.animating()) {
 		if (hasCover()) {
 			paintCover(p, 0);
--- a/Telegram/SourceFiles/intro/introwidget.h
+++ b/Telegram/SourceFiles/intro/introwidget.h
@ -9,6 +9,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL

 #include "mtproto/sender.h"
 #include "ui/rp_widget.h"
+#include "ui/effects/animations.h"
 #include "window/window_lock_widgets.h"
 #include "core/core_cloud_password.h"

@ -219,7 +220,7 @@ public:
 		Fn<QString()> _errorTextFactory;
 		object_ptr<Ui::FadeWrap<Ui::FlatLabel>> _error = { nullptr };

-		Animation _a_show;
+		Ui::Animations::Simple _a_show;
 		CoverAnimation _coverAnimation;
 		std::unique_ptr<Ui::SlideAnimation> _slideAnimation;
 		QPixmap _coverMask;
@ -260,7 +261,7 @@ private:
 	void getNearestDC();
 	void showTerms(Fn<void()> callback);

-	Animation _a_show;
+	Ui::Animations::Simple _a_show;
 	bool _showBack = false;
 	QPixmap _cacheUnder, _cacheOver;

@ -268,7 +269,7 @@ private:

 	Data _data;

-	Animation _coverShownAnimation;
+	Ui::Animations::Simple _coverShownAnimation;
 	int _nextTopFrom = 0;
 	int _controlsTopFrom = 0;

--- a/Telegram/SourceFiles/mainwidget.cpp
+++ b/Telegram/SourceFiles/mainwidget.cpp
@ -1593,7 +1593,7 @@ void MainWidget::ui_showPeerHistory(
 	}

 	_controller->dialogsListFocused().set(false, true);
-	_a_dialogsWidth.finish();
+	_a_dialogsWidth.stop();

 	using Way = SectionShow::Way;
 	auto way = params.way;
@ -1922,7 +1922,7 @@ void MainWidget::showNewSection(
 	QPixmap animCache;

 	_controller->dialogsListFocused().set(false, true);
-	_a_dialogsWidth.finish();
+	_a_dialogsWidth.stop();

 	auto mainSectionTop = getMainSectionTop();
 	auto newMainGeometry = QRect(
@ -2230,7 +2230,7 @@ void MainWidget::showAnimated(const QPixmap &bgAnimCache, bool back) {
 	_showBack = back;
 	(_showBack ? _cacheOver : _cacheUnder) = bgAnimCache;

-	_a_show.finish();
+	_a_show.stop();

 	showAll();
 	(_showBack ? _cacheUnder : _cacheOver) = Ui::GrabWidget(this);
@ -2262,7 +2262,7 @@ void MainWidget::paintEvent(QPaintEvent *e) {
 	}

 	Painter p(this);
-	auto progress = _a_show.current(crl::now(), 1.);
+	auto progress = _a_show.value(1.);
 	if (_a_show.animating()) {
 		auto coordUnder = _showBack ? anim::interpolate(-st::slideShift, 0, progress) : anim::interpolate(0, -st::slideShift, progress);
 		auto coordOver = _showBack ? anim::interpolate(0, width(), progress) : anim::interpolate(width(), 0, progress);
@ -2374,7 +2374,7 @@ void MainWidget::resizeEvent(QResizeEvent *e) {
 void MainWidget::updateControlsGeometry() {
 	updateWindowAdaptiveLayout();
 	if (session().settings().dialogsWidthRatio() > 0) {
-		_a_dialogsWidth.finish();
+		_a_dialogsWidth.stop();
 	}
 	if (!_a_dialogsWidth.animating()) {
 		_dialogs->stopWidthAnimation();
@ -2401,7 +2401,7 @@ void MainWidget::updateControlsGeometry() {
 		_thirdShadow.destroy();
 	}
 	auto mainSectionTop = getMainSectionTop();
-	auto dialogsWidth = qRound(_a_dialogsWidth.current(_dialogsWidth));
+	auto dialogsWidth = qRound(_a_dialogsWidth.value(_dialogsWidth));
 	if (Adaptive::OneColumn()) {
 		if (_callTopBar) {
 			_callTopBar->resizeToWidth(dialogsWidth);
--- a/Telegram/SourceFiles/mainwidget.h
+++ b/Telegram/SourceFiles/mainwidget.h
@ -10,6 +10,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "base/timer.h"
 #include "base/weak_ptr.h"
 #include "ui/rp_widget.h"
+#include "ui/effects/animations.h"
 #include "media/player/media_player_float.h"
 #include "data/data_pts_waiter.h"

@ -451,13 +452,13 @@ private:
 	not_null<Window::Controller*> _controller;
 	bool _started = false;

-	Animation _a_show;
+	Ui::Animations::Simple _a_show;
 	bool _showBack = false;
 	QPixmap _cacheUnder, _cacheOver;

 	int _dialogsWidth = 0;
 	int _thirdColumnWidth = 0;
-	Animation _a_dialogsWidth;
+	Ui::Animations::Simple _a_dialogsWidth;

 	object_ptr<Ui::PlainShadow> _sideShadow;
 	object_ptr<Ui::PlainShadow> _thirdShadow = { nullptr };
--- a/Telegram/SourceFiles/media/player/media_player_button.cpp
+++ b/Telegram/SourceFiles/media/player/media_player_button.cpp
@ -21,7 +21,7 @@ void PlayButtonLayout::setState(State state) {
 	if (_nextState == state) return;

 	_nextState = state;
-	if (!_transformProgress.animating(crl::now())) {
+	if (!_transformProgress.animating()) {
 		_oldState = _state;
 		_state = _nextState;
 		_transformBackward = false;
@ -37,16 +37,16 @@ void PlayButtonLayout::setState(State state) {
 }

 void PlayButtonLayout::finishTransform() {
-	_transformProgress.finish();
+	_transformProgress.stop();
 	_transformBackward = false;
 	if (_callback) _callback();
 }

 void PlayButtonLayout::paint(Painter &p, const QBrush &brush) {
-	if (_transformProgress.animating(crl::now())) {
+	if (_transformProgress.animating()) {
 		auto from = _oldState, to = _state;
 		auto backward = _transformBackward;
-		auto progress = _transformProgress.current(1.);
+		auto progress = _transformProgress.value(1.);
 		if (from == State::Cancel || (from == State::Pause && to == State::Play)) {
 			qSwap(from, to);
 			backward = !backward;
--- a/Telegram/SourceFiles/media/player/media_player_button.h
+++ b/Telegram/SourceFiles/media/player/media_player_button.h
@ -8,6 +8,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #pragma once

 #include "ui/abstract_button.h"
+#include "ui/effects/animations.h"
 #include "styles/style_media_player.h"

 namespace Media {
@ -40,7 +41,7 @@ private:
 	State _state = State::Play;
 	State _oldState = State::Play;
 	State _nextState = State::Play;
-	Animation _transformProgress;
+	Ui::Animations::Simple _transformProgress;
 	bool _transformBackward = false;

 	Fn<void()> _callback;
--- a/Telegram/SourceFiles/media/player/media_player_float.cpp
+++ b/Telegram/SourceFiles/media/player/media_player_float.cpp
@ -458,7 +458,7 @@ std::optional<bool> FloatController::filterWheelEvent(
 }

 void FloatController::updatePosition(not_null<Item*> instance) {
-	auto visible = instance->visibleAnimation.current(instance->visible ? 1. : 0.);
+	auto visible = instance->visibleAnimation.value(instance->visible ? 1. : 0.);
 	if (visible == 0. && !instance->visible) {
 		instance->widget->hide();
 		if (instance->widget->detached()) {
@ -474,7 +474,7 @@ void FloatController::updatePosition(not_null<Item*> instance) {
 			instance->widget->show();
 		}

-		auto dragged = instance->draggedAnimation.current(1.);
+		auto dragged = instance->draggedAnimation.value(1.);
 		auto position = QPoint();
 		if (instance->hiddenByDrag) {
 			instance->widget->setOpacity(instance->widget->countOpacityByParent());
@ -604,7 +604,7 @@ void FloatController::finishDrag(not_null<Item*> instance, bool closed) {
 	instance->column = Auth().settings().floatPlayerColumn();
 	instance->corner = Auth().settings().floatPlayerCorner();

-	instance->draggedAnimation.finish();
+	instance->draggedAnimation.stop();
 	instance->draggedAnimation.start(
 		[=] { updatePosition(instance); },
 		0.,
--- a/Telegram/SourceFiles/media/player/media_player_float.h
+++ b/Telegram/SourceFiles/media/player/media_player_float.h
@ -8,6 +8,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #pragma once

 #include "ui/rp_widget.h"
+#include "ui/effects/animations.h"

 namespace Window {
 class Controller;
@ -200,11 +201,11 @@ private:
 		bool hiddenByHistory = false;
 		bool visible = false;
 		RectPart animationSide;
-		Animation visibleAnimation;
+		Ui::Animations::Simple visibleAnimation;
 		Window::Column column;
 		RectPart corner;
 		QPoint dragFrom;
-		Animation draggedAnimation;
+		Ui::Animations::Simple draggedAnimation;
 		bool hiddenByDrag = false;
 		object_ptr<Float> widget;
 	};
--- a/Telegram/SourceFiles/media/player/media_player_panel.cpp
+++ b/Telegram/SourceFiles/media/player/media_player_panel.cpp
@ -138,9 +138,9 @@ void Panel::paintEvent(QPaintEvent *e) {
 	Painter p(this);

 	if (!_cache.isNull()) {
-		bool animating = _a_appearance.animating(crl::now());
+		bool animating = _a_appearance.animating();
 		if (animating) {
-			p.setOpacity(_a_appearance.current(_hiding ? 0. : 1.));
+			p.setOpacity(_a_appearance.value(_hiding ? 0. : 1.));
 		} else if (_hiding || isHidden()) {
 			hideFinished();
 			return;
@ -168,7 +168,7 @@ void Panel::enterEventHook(QEvent *e) {
 	if (_ignoringEnterEvents || contentTooSmall()) return;

 	_hideTimer.cancel();
-	if (_a_appearance.animating(crl::now())) {
+	if (_a_appearance.animating()) {
 		startShow();
 	} else {
 		_showTimer.callOnce(0);
@ -181,7 +181,7 @@ void Panel::leaveEventHook(QEvent *e) {
 		return;
 	}
 	_showTimer.cancel();
-	if (_a_appearance.animating(crl::now())) {
+	if (_a_appearance.animating()) {
 		startHide();
 	} else {
 		_hideTimer.callOnce(300);
@ -191,7 +191,7 @@ void Panel::leaveEventHook(QEvent *e) {

 void Panel::showFromOther() {
 	_hideTimer.cancel();
-	if (_a_appearance.animating(crl::now())) {
+	if (_a_appearance.animating()) {
 		startShow();
 	} else {
 		_showTimer.callOnce(300);
@ -200,7 +200,7 @@ void Panel::showFromOther() {

 void Panel::hideFromOther() {
 	_showTimer.cancel();
-	if (_a_appearance.animating(crl::now())) {
+	if (_a_appearance.animating()) {
 		startHide();
 	} else {
 		_hideTimer.callOnce(0);
--- a/Telegram/SourceFiles/media/player/media_player_panel.h
+++ b/Telegram/SourceFiles/media/player/media_player_panel.h
@ -9,6 +9,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL

 #include "base/timer.h"
 #include "ui/rp_widget.h"
+#include "ui/effects/animations.h"
 #include "info/info_controller.h"

 namespace Window {
@ -90,7 +91,7 @@ private:
 	bool _hiding = false;

 	QPixmap _cache;
-	Animation _a_appearance;
+	Ui::Animations::Simple _a_appearance;

 	bool _ignoringEnterEvents = false;

--- a/Telegram/SourceFiles/media/player/media_player_volume_controller.cpp
+++ b/Telegram/SourceFiles/media/player/media_player_volume_controller.cpp
@ -117,9 +117,9 @@ void VolumeWidget::paintEvent(QPaintEvent *e) {
 	Painter p(this);

 	if (!_cache.isNull()) {
-		bool animating = _a_appearance.animating(crl::now());
+		bool animating = _a_appearance.animating();
 		if (animating) {
-			p.setOpacity(_a_appearance.current(_hiding));
+			p.setOpacity(_a_appearance.value(_hiding ? 0. : 1.));
 		} else if (_hiding || isHidden()) {
 			hidingFinished();
 			return;
@ -142,7 +142,7 @@ void VolumeWidget::paintEvent(QPaintEvent *e) {

 void VolumeWidget::enterEventHook(QEvent *e) {
 	_hideTimer.stop();
-	if (_a_appearance.animating(crl::now())) {
+	if (_a_appearance.animating()) {
 		onShowStart();
 	} else {
 		_showTimer.start(0);
@ -152,7 +152,7 @@ void VolumeWidget::enterEventHook(QEvent *e) {

 void VolumeWidget::leaveEventHook(QEvent *e) {
 	_showTimer.stop();
-	if (_a_appearance.animating(crl::now())) {
+	if (_a_appearance.animating()) {
 		onHideStart();
 	} else {
 		_hideTimer.start(300);
@ -162,7 +162,7 @@ void VolumeWidget::leaveEventHook(QEvent *e) {

 void VolumeWidget::otherEnter() {
 	_hideTimer.stop();
-	if (_a_appearance.animating(crl::now())) {
+	if (_a_appearance.animating()) {
 		onShowStart();
 	} else {
 		_showTimer.start(0);
@ -171,7 +171,7 @@ void VolumeWidget::otherEnter() {

 void VolumeWidget::otherLeave() {
 	_showTimer.stop();
-	if (_a_appearance.animating(crl::now())) {
+	if (_a_appearance.animating()) {
 		onHideStart();
 	} else {
 		_hideTimer.start(0);
@ -196,14 +196,16 @@ void VolumeWidget::onHideStart() {
 }

 void VolumeWidget::startAnimation() {
-	auto from = _hiding ? 1. : 0.;
-	auto to = _hiding ? 0. : 1.;
 	if (_cache.isNull()) {
 		showChildren();
 		_cache = Ui::GrabWidget(this);
 	}
 	hideChildren();
-	_a_appearance.start([this] { appearanceCallback(); }, from, to, st::defaultInnerDropdown.duration);
+	_a_appearance.start(
+		[=] { appearanceCallback(); },
+		_hiding ? 1. : 0.,
+		_hiding ? 0. : 1.,
+		st::defaultInnerDropdown.duration);
 }

 void VolumeWidget::appearanceCallback() {
--- a/Telegram/SourceFiles/media/player/media_player_volume_controller.h
+++ b/Telegram/SourceFiles/media/player/media_player_volume_controller.h
@ -7,6 +7,8 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 */
 #pragma once

+#include "ui/effects/animations.h"
+
 namespace Ui {
 class IconButton;
 class MediaSlider;
@ -66,7 +68,7 @@ private:
 	bool _hiding = false;

 	QPixmap _cache;
-	Animation _a_appearance;
+	Ui::Animations::Simple _a_appearance;

 	QTimer _hideTimer, _showTimer;

--- a/Telegram/SourceFiles/media/player/media_player_widget.cpp
+++ b/Telegram/SourceFiles/media/player/media_player_widget.cpp
@ -62,7 +62,7 @@ Widget::PlayButton::PlayButton(QWidget *parent) : Ui::RippleButton(parent, st::m
 void Widget::PlayButton::paintEvent(QPaintEvent *e) {
 	Painter p(this);

-	paintRipple(p, st::mediaPlayerButton.rippleAreaPosition.x(), st::mediaPlayerButton.rippleAreaPosition.y(), crl::now());
+	paintRipple(p, st::mediaPlayerButton.rippleAreaPosition.x(), st::mediaPlayerButton.rippleAreaPosition.y());
 	p.translate(st::mediaPlayerButtonPosition.x(), st::mediaPlayerButtonPosition.y());
 	_layout.paint(p, st::mediaPlayerActiveFg);
 }
--- a/Telegram/SourceFiles/media/view/media_view_group_thumbs.cpp
+++ b/Telegram/SourceFiles/media/view/media_view_group_thumbs.cpp
@ -624,7 +624,7 @@ void GroupThumbs::clear() {
 }

 void GroupThumbs::startDelayedAnimation() {
-	_animation.finish();
+	_animation.stop();
 	_waitingForAnimationStart = true;
 	countUpdatedRect();
 }
@ -661,15 +661,10 @@ void GroupThumbs::update() {
 	_updateRequests.fire_copy(_updatedRect);
 }

-void GroupThumbs::paint(
-		Painter &p,
-		int x,
-		int y,
-		int outerWidth,
-		crl::time ms) {
+void GroupThumbs::paint(Painter &p, int x, int y, int outerWidth) {
 	const auto progress = _waitingForAnimationStart
 		? 0.
-		: _animation.current(ms, 1.);
+		: _animation.value(1.);
 	x += (_width / 2);
 	y += st::mediaviewGroupPadding.top();
 	for (auto i = _cache.begin(); i != _cache.end();) {
--- a/Telegram/SourceFiles/media/view/media_view_group_thumbs.h
+++ b/Telegram/SourceFiles/media/view/media_view_group_thumbs.h
@ -8,6 +8,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #pragma once

 #include "history/history_item_components.h"
+#include "ui/effects/animations.h"
 #include "base/weak_ptr.h"

 class SharedMediaWithLastSlice;
@ -57,7 +58,7 @@ public:
 	bool hidden() const;
 	void checkForAnimationStart();

-	void paint(Painter &p, int x, int y, int outerWidth, crl::time ms);
+	void paint(Painter &p, int x, int y, int outerWidth);
 	ClickHandlerPtr getState(QPoint point) const;

 	rpl::producer<QRect> updateRequests() const {
@ -112,7 +113,7 @@ private:

 	Context _context;
 	bool _waitingForAnimationStart = true;
-	Animation _animation;
+	Ui::Animations::Simple _animation;
 	std::vector<not_null<Thumb*>> _items;
 	std::vector<not_null<Thumb*>> _dying;
 	base::flat_map<Key, std::unique_ptr<Thumb>> _cache;
--- a/Telegram/SourceFiles/media/view/media_view_overlay_widget.cpp
+++ b/Telegram/SourceFiles/media/view/media_view_overlay_widget.cpp
@ -2652,8 +2652,7 @@ void OverlayWidget::paintEvent(QPaintEvent *e) {
 				p,
 				_groupThumbsLeft,
 				_groupThumbsTop,
-				width(),
-				ms);
+				width());
 			if (_groupThumbs->hidden()) {
 				_groupThumbs = nullptr;
 				_groupThumbsRect = QRect();
--- a/Telegram/SourceFiles/overview/overview_layout.cpp
+++ b/Telegram/SourceFiles/overview/overview_layout.cpp
@ -72,7 +72,7 @@ public:
 	, _check(st, _updateCallback) {
 	}

-	void paint(Painter &p, crl::time ms, QPoint position, int outerWidth, bool selected, bool selecting);
+	void paint(Painter &p, QPoint position, int outerWidth, bool selected, bool selecting);

 	void setActive(bool active);
 	void setPressed(bool pressed);
@ -87,18 +87,18 @@ private:
 	Fn<void()> _updateCallback;
 	Ui::RoundCheckbox _check;

-	Animation _pression;
+	Ui::Animations::Simple _pression;
 	bool _active = false;
 	bool _pressed = false;

 };

-void Checkbox::paint(Painter &p, crl::time ms, QPoint position, int outerWidth, bool selected, bool selecting) {
+void Checkbox::paint(Painter &p, QPoint position, int outerWidth, bool selected, bool selecting) {
 	_check.setDisplayInactive(selecting);
 	_check.setChecked(selected);
-	const auto pression = _pression.current(ms, (_active && _pressed) ? 1. : 0.);
+	const auto pression = _pression.value((_active && _pressed) ? 1. : 0.);
 	const auto masterScale = 1. - (1. - st::overviewCheckPressedSize) * pression;
-	_check.paint(p, ms, position.x(), position.y(), outerWidth, masterScale);
+	_check.paint(p, position.x(), position.y(), outerWidth, masterScale);
 }

 void Checkbox::setActive(bool active) {
@ -167,7 +167,7 @@ void ItemBase::paintCheckbox(
 		ensureCheckboxCreated();
 	}
 	if (_check) {
-		_check->paint(p, context->ms, position, _width, selected, context->selecting);
+		_check->paint(p, position, _width, selected, context->selecting);
 	}
 }

@ -491,7 +491,7 @@ void Video::paint(Painter &p, const QRect &clip, TextSelection selection, const
 			p.setBrush(st::msgDateImgBgSelected);
 		} else {
 			auto over = ClickHandler::showAsActive((_data->loading() || _data->uploading()) ? _cancell : (loaded || _data->canBePlayed()) ? _openl : _savel);
-			p.setBrush(anim::brush(st::msgDateImgBg, st::msgDateImgBgOver, _a_iconOver.current(context->ms, over ? 1. : 0.)));
+			p.setBrush(anim::brush(st::msgDateImgBg, st::msgDateImgBgOver, _a_iconOver.value(over ? 1. : 0.)));
 		}

 		{
@ -670,10 +670,10 @@ void Voice::paint(Painter &p, const QRect &clip, TextSelection selection, const
 			p.setBrush((thumbLoaded || blurred) ? st::msgDateImgBgSelected : st::msgFileInBgSelected);
 		} else if (_data->hasThumbnail()) {
 			auto over = ClickHandler::showAsActive(checkLink);
-			p.setBrush(anim::brush(st::msgDateImgBg, st::msgDateImgBgOver, _a_iconOver.current(context->ms, over ? 1. : 0.)));
+			p.setBrush(anim::brush(st::msgDateImgBg, st::msgDateImgBgOver, _a_iconOver.value(over ? 1. : 0.)));
 		} else {
 			auto over = ClickHandler::showAsActive(checkLink);
-			p.setBrush(anim::brush(st::msgFileInBg, st::msgFileInBgOver, _a_iconOver.current(context->ms, over ? 1. : 0.)));
+			p.setBrush(anim::brush(st::msgFileInBg, st::msgFileInBgOver, _a_iconOver.value(over ? 1. : 0.)));
 		}
 		{
 			PainterHighQualityEnabler hq(p);
@ -948,7 +948,7 @@ void Document::paint(Painter &p, const QRect &clip, TextSelection selection, con
 				p.setBrush(st::msgFileInBgSelected);
 			} else {
 				auto over = ClickHandler::showAsActive((!cornerDownload && (_data->loading() || _data->uploading())) ? _cancell : (loaded || _data->canBePlayed()) ? _openl : _savel);
-				p.setBrush(anim::brush(_st.songIconBg, _st.songOverBg, _a_iconOver.current(context->ms, over ? 1. : 0.)));
+				p.setBrush(anim::brush(_st.songIconBg, _st.songOverBg, _a_iconOver.value(over ? 1. : 0.)));
 			}

 			{
@ -1026,7 +1026,7 @@ void Document::paint(Painter &p, const QRect &clip, TextSelection selection, con
 						p.setBrush(wthumb ? st::msgDateImgBgSelected : documentSelectedColor(_colorIndex));
 					} else {
 						auto over = ClickHandler::showAsActive(_data->loading() ? _cancell : _savel);
-						p.setBrush(anim::brush(wthumb ? st::msgDateImgBg : documentDarkColor(_colorIndex), wthumb ? st::msgDateImgBgOver : documentOverColor(_colorIndex), _a_iconOver.current(context->ms, over ? 1. : 0.)));
+						p.setBrush(anim::brush(wthumb ? st::msgDateImgBg : documentDarkColor(_colorIndex), wthumb ? st::msgDateImgBgOver : documentOverColor(_colorIndex), _a_iconOver.value(over ? 1. : 0.)));
 					}
 					p.setOpacity(radialOpacity * p.opacity());

--- a/Telegram/SourceFiles/overview/overview_layout.h
+++ b/Telegram/SourceFiles/overview/overview_layout.h
@ -9,6 +9,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL

 #include "layout.h"
 #include "core/click_handler_types.h"
+#include "ui/effects/animations.h"
 #include "ui/effects/radial_animation.h"
 #include "styles/style_overview.h"

@ -148,7 +149,7 @@ protected:
 	}

 	mutable std::unique_ptr<Ui::RadialAnimation> _radial;
-	Animation _a_iconOver;
+	Ui::Animations::Simple _a_iconOver;

 };

--- a/Telegram/SourceFiles/passport/passport_panel_details_row.cpp
+++ b/Telegram/SourceFiles/passport/passport_panel_details_row.cpp
@ -124,7 +124,7 @@ private:
 	object_ptr<Ui::LinkButton> _link;
 	rpl::variable<QString> _value;
 	bool _errorShown = false;
-	Animation _errorAnimation;
+	Ui::Animations::Simple _errorAnimation;

 };

@ -197,14 +197,14 @@ private:
 	rpl::variable<QString> _value;

 	style::cursor _cursor = style::cur_default;
-	Animation _a_borderShown;
+	Ui::Animations::Simple _a_borderShown;
 	int _borderAnimationStart = 0;
-	Animation _a_borderOpacity;
+	Ui::Animations::Simple _a_borderOpacity;
 	bool _borderVisible = false;

-	Animation _a_error;
+	Ui::Animations::Simple _a_error;
 	bool _error = false;
-	Animation _a_focused;
+	Ui::Animations::Simple _a_focused;
 	bool _focused = false;

 };
@ -248,7 +248,7 @@ private:
 	rpl::variable<QString> _value;

 	bool _errorShown = false;
-	Animation _errorAnimation;
+	Ui::Animations::Simple _errorAnimation;

 };

@ -344,7 +344,7 @@ void CountryRow::showInnerError() {

 void CountryRow::finishInnerAnimating() {
 	if (_errorAnimation.animating()) {
-		_errorAnimation.finish();
+		_errorAnimation.stop();
 		errorAnimationCallback();
 	}
 }
@ -365,7 +365,7 @@ void CountryRow::toggleError(bool shown) {
 }

 void CountryRow::errorAnimationCallback() {
-	const auto error = _errorAnimation.current(_errorShown ? 1. : 0.);
+	const auto error = _errorAnimation.value(_errorShown ? 1. : 0.);
 	if (error == 0.) {
 		_link->setColorOverride(std::nullopt);
 	} else {
@ -676,11 +676,10 @@ void DateRow::paintEvent(QPaintEvent *e) {
 	if (_st.border) {
 		p.fillRect(0, height - _st.border, width, _st.border, _st.borderFg);
 	}
-	const auto ms = crl::now();
-	auto errorDegree = _a_error.current(ms, _error ? 1. : 0.);
-	auto focusedDegree = _a_focused.current(ms, _focused ? 1. : 0.);
-	auto borderShownDegree = _a_borderShown.current(ms, 1.);
-	auto borderOpacity = _a_borderOpacity.current(ms, _borderVisible ? 1. : 0.);
+	auto errorDegree = _a_error.value(_error ? 1. : 0.);
+	auto focusedDegree = _a_focused.value(_focused ? 1. : 0.);
+	auto borderShownDegree = _a_borderShown.value(1.);
+	auto borderOpacity = _a_borderOpacity.value(_borderVisible ? 1. : 0.);
 	if (_st.borderActive && (borderOpacity > 0.)) {
 		auto borderStart = snap(_borderAnimationStart, 0, width);
 		auto borderFrom = qRound(borderStart * (1. - borderShownDegree));
@ -818,9 +817,9 @@ void DateRow::finishInnerAnimating() {
 	_day->finishAnimating();
 	_month->finishAnimating();
 	_year->finishAnimating();
-	_a_borderOpacity.finish();
-	_a_borderShown.finish();
-	_a_error.finish();
+	_a_borderOpacity.stop();
+	_a_borderShown.stop();
+	_a_error.stop();
 }

 void DateRow::startBorderAnimation() {
@ -914,7 +913,7 @@ void GenderRow::showInnerError() {

 void GenderRow::finishInnerAnimating() {
 	if (_errorAnimation.animating()) {
-		_errorAnimation.finish();
+		_errorAnimation.stop();
 		errorAnimationCallback();
 	}
 }
@ -935,7 +934,7 @@ void GenderRow::toggleError(bool shown) {
 }

 void GenderRow::errorAnimationCallback() {
-	const auto error = _errorAnimation.current(_errorShown ? 1. : 0.);
+	const auto error = _errorAnimation.value(_errorShown ? 1. : 0.);
 	if (error == 0.) {
 		_maleRadio->setUntoggledOverride(std::nullopt);
 		_femaleRadio->setUntoggledOverride(std::nullopt);
@ -1107,7 +1106,7 @@ void PanelDetailsRow::finishAnimating() {
 		_error->finishAnimating();
 	}
 	if (_errorAnimation.animating()) {
-		_errorAnimation.finish();
+		_errorAnimation.stop();
 		update();
 	}
 }
@ -1115,8 +1114,7 @@ void PanelDetailsRow::finishAnimating() {
 void PanelDetailsRow::paintEvent(QPaintEvent *e) {
 	Painter p(this);

-	const auto ms = crl::now();
-	const auto error = _errorAnimation.current(ms, _errorShown ? 1. : 0.);
+	const auto error = _errorAnimation.value(_errorShown ? 1. : 0.);
 	p.setFont(st::semiboldFont);
 	p.setPen(anim::pen(
 		st::passportDetailsField.placeholderFg,
--- a/Telegram/SourceFiles/passport/passport_panel_details_row.h
+++ b/Telegram/SourceFiles/passport/passport_panel_details_row.h
@ -8,6 +8,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #pragma once

 #include "ui/rp_widget.h"
+#include "ui/effects/animations.h"
 #include "ui/wrap/padding_wrap.h"
 #include "ui/widgets/labels.h"
 #include "boxes/abstract_box.h"
@ -76,7 +77,7 @@ private:
 	object_ptr<Ui::SlideWrap<Ui::FlatLabel>> _error = { nullptr };
 	bool _errorShown = false;
 	bool _errorHideSubscription = false;
-	Animation _errorAnimation;
+	Ui::Animations::Simple _errorAnimation;

 };

--- a/Telegram/SourceFiles/passport/passport_panel_edit_scans.cpp
+++ b/Telegram/SourceFiles/passport/passport_panel_edit_scans.cpp
@ -119,7 +119,7 @@ struct EditScans::SpecialScan {
 	base::unique_qptr<Ui::SlideWrap<ScanButton>> row;
 	QPointer<Info::Profile::Button> upload;
 	bool errorShown = false;
-	Animation errorAnimation;
+	Ui::Animations::Simple errorAnimation;
 	rpl::variable<bool> rowCreated;
 };

@ -231,7 +231,7 @@ void EditScans::List::toggleError(bool shown) {
 }

 void EditScans::List::errorAnimationCallback() {
-	const auto error = errorAnimation.current(errorShown ? 1. : 0.);
+	const auto error = errorAnimation.value(errorShown ? 1. : 0.);
 	if (error == 0.) {
 		upload->setColorOverride(std::nullopt);
 	} else {
@ -972,7 +972,7 @@ void EditScans::toggleSpecialScanError(FileType type, bool shown) {

 void EditScans::specialScanErrorAnimationCallback(FileType type) {
 	auto &scan = findSpecialScan(type);
-	const auto error = scan.errorAnimation.current(
+	const auto error = scan.errorAnimation.value(
 		scan.errorShown ? 1. : 0.);
 	if (error == 0.) {
 		scan.upload->setColorOverride(std::nullopt);
--- a/Show More
+++ b/Show More