Playlist appearance added to the new media player.

Also itemRemoved() now is fired as a global observable.

Telegram/SourceFiles/app.cpp

@@ -2018,8 +2018,8 @@ namespace {
 		if (auto manager = Window::Notifications::manager()) {
 			manager->clearFromItem(item);
 		}
-		if (App::main() && !App::quitting()) {
-			App::main()->itemRemoved(item);
+		if (Global::started() && !App::quitting()) {
+			Global::RefItemRemoved().notify(item, true);
 		}
 	}
 

Telegram/SourceFiles/core/observer.h

@@ -21,6 +21,7 @@ Copyright (c) 2014-2016 John Preston, https://desktop.telegram.org
 #pragma once
 
 #include "core/vector_of_moveable.h"
+#include "core/type_traits.h"
 
 namespace base {
 namespace internal {
@@ -30,9 +31,12 @@ void RegisterPendingObservable(ObservableCallHandlers *handlers);
 void UnregisterActiveObservable(ObservableCallHandlers *handlers);
 void UnregisterObservable(ObservableCallHandlers *handlers);
 
+template <typename EventType>
+using EventParamType = typename base::type_traits<EventType>::parameter_type;
+
 template <typename EventType>
 struct SubscriptionHandlerHelper {
-	using type = base::lambda_unique<void(const EventType &)>;
+	using type = base::lambda_unique<void(EventParamType<EventType>)>;
 };
 
 template <>
@@ -67,6 +71,9 @@ public:
 		qSwap(_removeMethod, other._removeMethod);
 		return *this;
 	}
+	explicit operator bool() const {
+		return (_node != nullptr);
+	}
 	void destroy() {
 		if (_node) {
 			(*_removeMethod)(_node);
@@ -128,14 +135,26 @@ private:
 
 template <typename EventType, typename Handler = internal::SubscriptionHandler<EventType>>
 class Observable : public internal::CommonObservable<EventType, Handler> {
+	using SimpleEventType = typename base::type_traits<EventType>::is_fast_copy_type;
+
 public:
+	template <typename = std_::enable_if_t<!SimpleEventType::value>>
 	void notify(EventType &&event, bool sync = false) {
 		if (this->_data) {
 			this->_data->notify(std_::move(event), sync);
 		}
 	}
+	template <typename = std_::enable_if_t<!SimpleEventType::value>>
 	void notify(const EventType &event, bool sync = false) {
-		notify(EventType(event));
+		if (this->_data) {
+			this->_data->notify(EventType(event), sync);
+		}
+	}
+	template <typename = std_::enable_if_t<SimpleEventType::value>>
+	void notify(EventType event, bool sync = false) {
+		if (this->_data) {
+			this->_data->notify(std_::move(event), sync);
+		}
 	}
 
 };
@@ -338,7 +357,7 @@ protected:
 	template <typename EventType, typename Handler, typename Lambda>
 	int subscribe(base::Observable<EventType, Handler> &observable, Lambda &&handler) {
 		_subscriptions.push_back(observable.add_subscription(std_::forward<Lambda>(handler)));
-		return _subscriptions.size() - 1;
+		return _subscriptions.size();
 	}
 
 	template <typename EventType, typename Handler, typename Lambda>
@@ -347,8 +366,14 @@ protected:
 	}
 
 	void unsubscribe(int index) {
-		t_assert(index >= 0 && index < _subscriptions.size());
-		_subscriptions[index].destroy();
+		if (!index) return;
+		t_assert(index > 0 && index <= _subscriptions.size());
+		_subscriptions[index - 1].destroy();
+		if (index == _subscriptions.size()) {
+			while (index > 0 && !_subscriptions[--index]) {
+				_subscriptions.pop_back();
+			}
+		}
 	}
 
 	~Subscriber() {

Telegram/SourceFiles/core/stl_subset.h

@@ -139,6 +139,19 @@ struct enable_if<true, T> {
 template <bool Test, typename T = void>
 using enable_if_t = typename enable_if<Test, T>::type;
 
+template <bool, typename First, typename Second>
+struct conditional {
+	using type = Second;
+};
+
+template <typename First, typename Second>
+struct conditional<true, First, Second> {
+	using type = First;
+};
+
+template <bool Test, typename First, typename Second>
+using conditional_t = typename conditional<Test, First, Second>::type;
+
 template <typename T>
 struct add_const {
 	using type = const T;

Telegram/SourceFiles/core/type_traits.h

@@ -0,0 +1,102 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop version of Telegram messaging app, see https://telegram.org
+
+Telegram Desktop is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+It is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+In addition, as a special exception, the copyright holders give permission
+to link the code of portions of this program with the OpenSSL library.
+
+Full license: https://github.com/telegramdesktop/tdesktop/blob/master/LICENSE
+Copyright (c) 2014-2016 John Preston, https://desktop.telegram.org
+*/
+#pragma once
+
+#include "core/stl_subset.h"
+
+namespace base {
+
+template <typename T>
+struct custom_is_fast_copy_type : public std_::false_type {
+};
+// To make your own type a fast copy type just write:
+// template <>
+// struct base::custom_is_fast_copy_type<MyTinyType> : public std_::true_type {
+// };
+
+namespace internal {
+
+template <typename ...Types>
+struct type_list_contains;
+
+template <typename T>
+struct type_list_contains<T> : public std_::false_type {
+};
+
+template <typename T, typename Head, typename ...Types>
+struct type_list_contains<T, Head, Types...> : public std_::integral_constant<bool, std_::is_same<Head, T>::value || type_list_contains<T, Types...>::value> {
+};
+
+template <typename T>
+using is_std_unsigned_int = type_list_contains<T, unsigned char, unsigned short int, unsigned int, unsigned long int>;
+
+template <typename T>
+using is_std_signed_int = type_list_contains<T, signed char, short int, int, long int>;
+
+template <typename T>
+using is_std_integral = std_::integral_constant<bool, is_std_unsigned_int<T>::value || is_std_signed_int<T>::value || type_list_contains<T, bool, char, wchar_t>::value>;
+
+template <typename T>
+using is_std_float = type_list_contains<T, float, double, long double>;
+
+template <typename T>
+using is_std_arith = std_::integral_constant<bool, is_std_integral<T>::value || is_std_float<T>::value>;
+
+template <typename T>
+using is_std_fundamental = std_::integral_constant<bool, is_std_arith<T>::value || std_::is_same<T, void>::value>;
+
+template <typename T>
+struct is_pointer : public std_::false_type {
+};
+
+template <typename T>
+struct is_pointer<T*> : public std_::true_type {
+};
+
+template <typename T>
+struct is_member_pointer : public std_::false_type {
+};
+
+template <typename T, typename C>
+struct is_member_pointer<T C::*> : public std_::true_type {
+};
+
+template <typename T>
+using is_fast_copy_type = std_::integral_constant<bool, is_std_arith<T>::value || is_pointer<T>::value || is_member_pointer<T>::value || custom_is_fast_copy_type<T>::value>;
+
+} // namespace internal
+
+template <typename T>
+struct type_traits {
+	using is_std_unsigned_int = internal::is_std_unsigned_int<T>;
+	using is_std_signed_int = internal::is_std_signed_int<T>;
+	using is_std_integral = internal::is_std_integral<T>;
+	using is_std_float = internal::is_std_float<T>;
+	using is_std_arith = internal::is_std_arith<T>;
+	using is_std_fundamental = internal::is_std_fundamental<T>;
+	using is_pointer = internal::is_pointer<T>;
+	using is_member_pointer = internal::is_member_pointer<T>;
+	using is_fast_copy_type = internal::is_fast_copy_type<T>;
+
+	using parameter_type = std_::conditional_t<is_fast_copy_type::value, T, const T&>;
+};
+
+} // namespace base

Telegram/SourceFiles/dialogswidget.cpp

@@ -55,6 +55,9 @@ DialogsInner::DialogsInner(QWidget *parent, MainWidget *main) : SplittedWidget(p
 	_cancelSearchInPeer.hide();
 
 	subscribe(FileDownload::ImageLoaded(), [this] { update(); });
+	subscribe(Global::RefItemRemoved(), [this](HistoryItem *item) {
+		itemRemoved(item);
+	});
 
 	refresh();
 }
@@ -1900,10 +1903,6 @@ void DialogsWidget::onCancel() {
 	}
 }
 
-void DialogsWidget::itemRemoved(HistoryItem *item) {
-	_inner.itemRemoved(item);
-}
-
 void DialogsWidget::updateNotifySettings(PeerData *peer) {
 	_inner.updateNotifySettings(peer);
 }

Telegram/SourceFiles/dialogswidget.h

@@ -48,7 +48,6 @@ class DialogsInner : public SplittedWidget, public RPCSender, private base::Subs
 	Q_OBJECT
 
 public:
-
 	DialogsInner(QWidget *parent, MainWidget *main);
 
 	void dialogsReceived(const QVector<MTPDialog> &dialogs);
@@ -119,7 +118,6 @@ public:
 
 	void onFilterUpdate(QString newFilter, bool force = false);
 	void onHashtagFilterUpdate(QStringRef newFilter);
-	void itemRemoved(HistoryItem *item);
 
 	PeerData *updateFromParentDrag(QPoint globalPos);
 
@@ -131,7 +129,6 @@ public:
 	~DialogsInner();
 
 public slots:
-
 	void onUpdateSelected(bool force = false);
 	void onParentGeometryChanged();
 	void onPeerNameChanged(PeerData *peer, const PeerData::Names &oldNames, const PeerData::NameFirstChars &oldChars);
@@ -152,7 +149,6 @@ public slots:
 	void peerUpdated(PeerData *peer);
 
 signals:
-
 	void mustScrollTo(int scrollToTop, int scrollToBottom);
 	void dialogMoved(int movedFrom, int movedTo);
 	void searchMessages();
@@ -162,10 +158,10 @@ signals:
 	void refreshHashtags();
 
 protected:
-
 	void paintRegion(Painter &p, const QRegion &region, bool paintingOther);
 
 private:
+	void itemRemoved(HistoryItem *item);
 
 	int dialogsOffset() const;
 	int filteredOffset() const;
@@ -288,8 +284,6 @@ public:
 	void searchMessages(const QString &query, PeerData *inPeer = 0);
 	void onSearchMore();
 
-	void itemRemoved(HistoryItem *item);
-
 	void updateNotifySettings(PeerData *peer);
 
 	void rpcClear() override {

Telegram/SourceFiles/facades.cpp

@@ -661,6 +661,8 @@ struct Data {
 	bool LocalPasscode = false;
 	base::Observable<void> LocalPasscodeChanged;
 
+	base::Observable<HistoryItem*> ItemRemoved;
+
 };
 
 } // namespace internal
@@ -774,4 +776,6 @@ DefineVar(Global, int, AutoLock);
 DefineVar(Global, bool, LocalPasscode);
 DefineRefVar(Global, base::Observable<void>, LocalPasscodeChanged);
 
+DefineRefVar(Global, base::Observable<HistoryItem*>, ItemRemoved);
+
 } // namespace Global

Telegram/SourceFiles/facades.h

@@ -20,6 +20,8 @@ Copyright (c) 2014-2016 John Preston, https://desktop.telegram.org
 */
 #pragma once
 
+#include "core/type_traits.h"
+
 class LayerWidget;
 namespace base {
 template <typename Type, typename>
@@ -170,6 +172,10 @@ inline bool IsTopCorner(ScreenCorner corner) {
 
 } // namespace Notify
 
+template <>
+struct base::custom_is_fast_copy_type<Notify::ChangeType> : public std_::true_type {
+};
+
 #define DeclareReadOnlyVar(Type, Name) const Type &Name();
 #define DeclareRefVar(Type, Name) DeclareReadOnlyVar(Type, Name) \
 	Type &Ref##Name();
@@ -346,6 +352,8 @@ DeclareVar(int, AutoLock);
 DeclareVar(bool, LocalPasscode);
 DeclareRefVar(base::Observable<void>, LocalPasscodeChanged);
 
+DeclareRefVar(base::Observable<HistoryItem*>, ItemRemoved);
+
 } // namespace Global
 
 namespace Adaptive {

Telegram/SourceFiles/historywidget.cpp

@@ -132,6 +132,9 @@ HistoryInner::HistoryInner(HistoryWidget *historyWidget, ScrollArea *scroll, His
 	notifyIsBotChanged();
 
 	setMouseTracking(true);
+	subscribe(Global::RefItemRemoved(), [this](HistoryItem *item) {
+		itemRemoved(item);
+	});
 }
 
 void HistoryInner::messagesReceived(PeerData *peer, const QVector<MTPMessage> &messages) {
@@ -969,7 +972,11 @@ void HistoryInner::onDragExec() {
 }
 
 void HistoryInner::itemRemoved(HistoryItem *item) {
-	SelectedItems::iterator i = _selected.find(item);
+	if (_history != item->history() && _migrated != item->history()) {
+		return;
+	}
+
+	auto i = _selected.find(item);
 	if (i != _selected.cend()) {
 		_selected.erase(i);
 		_widget->updateTopBarSelection();
@@ -3130,7 +3137,10 @@ HistoryWidget::HistoryWidget(QWidget *parent) : TWidget(parent)
 
 	connect(&_updateEditTimeLeftDisplay, SIGNAL(timeout()), this, SLOT(updateField()));
 
-	subscribe(Adaptive::Changed(), [this]() { update(); });
+	subscribe(Adaptive::Changed(), [this] { update(); });
+	subscribe(Global::RefItemRemoved(), [this](HistoryItem *item) {
+		itemRemoved(item);
+	});
 }
 
 void HistoryWidget::start() {
@@ -7044,7 +7054,6 @@ void HistoryWidget::resizeEvent(QResizeEvent *e) {
 }
 
 void HistoryWidget::itemRemoved(HistoryItem *item) {
-	if (_list) _list->itemRemoved(item);
 	if (item == _replyEditMsg) {
 		if (_editMsgId) {
 			cancelEdit();

Telegram/SourceFiles/historywidget.h

@@ -46,11 +46,10 @@ class DragArea;
 class EmojiPan;
 
 class HistoryWidget;
-class HistoryInner : public TWidget, public AbstractTooltipShower {
+class HistoryInner : public TWidget, public AbstractTooltipShower, private base::Subscriber {
 	Q_OBJECT
 
 public:
-
 	HistoryInner(HistoryWidget *historyWidget, ScrollArea *scroll, History *history);
 
 	void messagesReceived(PeerData *peer, const QVector<MTPMessage> &messages);
@@ -92,8 +91,6 @@ public:
 	void fillSelectedItems(SelectedItemSet &sel, bool forDelete = true);
 	void selectItem(HistoryItem *item);
 
-	void itemRemoved(HistoryItem *item);
-
 	void updateBotInfo(bool recount = true);
 
 	bool wasSelectedText() const;
@@ -126,7 +123,6 @@ protected:
 	bool focusNextPrevChild(bool next) override;
 
 public slots:
-
 	void onUpdateSelected();
 	void onParentGeometryChanged();
 
@@ -146,11 +142,11 @@ public slots:
 	void onDragExec();
 
 private slots:
-
 	void onScrollDateCheck();
 	void onScrollDateHide();
 
 private:
+	void itemRemoved(HistoryItem *item);
 
 	void touchResetSpeed();
 	void touchUpdateSpeed();
@@ -633,7 +629,6 @@ public:
 	void stopAnimActive();
 
 	void fillSelectedItems(SelectedItemSet &sel, bool forDelete = true);
-	void itemRemoved(HistoryItem *item);
 	void itemEdited(HistoryItem *item);
 
 	void updateScrollColors();
@@ -733,12 +728,10 @@ public:
 	~HistoryWidget();
 
 signals:
-
 	void cancelled();
 	void historyShown(History *history, MsgId atMsgId);
 
 public slots:
-
 	void onCancel();
 	void onReplyToMessage();
 	void onEditMessage();
@@ -841,7 +834,6 @@ public slots:
 	void preloadHistoryIfNeeded();
 
 private slots:
-
 	void onHashtagOrBotCommandInsert(QString str, FieldAutocomplete::ChooseMethod method);
 	void onMentionInsert(UserData *user);
 	void onInlineBotCancel();
@@ -853,6 +845,7 @@ private slots:
 	void updateField();
 
 private:
+	void itemRemoved(HistoryItem *item);
 
 	// Updates position of controls around the message field,
 	// like send button, emoji button and others.

Telegram/SourceFiles/mainwidget.cpp

@@ -73,6 +73,8 @@ MainWidget::MainWidget(MainWindow *window) : TWidget(window)
 , _dialogs(this)
 , _history(this)
 , _topBar(this)
+, _playerPlaylist(this, Media::Player::Panel::Layout::OnlyPlaylist)
+, _playerPanel(this, Media::Player::Panel::Layout::Full)
 , _mediaType(this)
 , _api(new ApiWrap(this)) {
 	setGeometry(QRect(0, st::titleHeight, App::wnd()->width(), App::wnd()->height() - st::titleHeight));
@@ -120,6 +122,30 @@ MainWidget::MainWidget(MainWindow *window) : TWidget(window)
 	});
 	connect(&_cacheBackgroundTimer, SIGNAL(timeout()), this, SLOT(onCacheBackground()));
 
+	if (Media::Player::exists()) {
+		_playerPanel->setPinCallback([this] { switchToFixedPlayer(); });
+		subscribe(Media::Player::instance()->titleButtonOver(), [this](bool over) {
+			if (over) {
+				_playerPanel->showFromOther();
+			} else {
+				_playerPanel->hideFromOther();
+			}
+		});
+		subscribe(Media::Player::instance()->playerWidgetOver(), [this](bool over) {
+			if (over) {
+				if (_playerPlaylist->isHidden()) {
+					auto position = mapFromGlobal(QCursor::pos()).x();
+					auto bestPosition = _playerPlaylist->bestPositionFor(position);
+					if (rtl()) bestPosition = position + 2 * (position - bestPosition) - _playerPlaylist->width();
+					updateMediaPlaylistPosition(bestPosition);
+				}
+				_playerPlaylist->showFromOther();
+			} else {
+				_playerPlaylist->hideFromOther();
+			}
+		});
+	}
+
 	subscribe(Adaptive::Changed(), [this]() { updateAdaptiveLayout(); });
 
 	_dialogs->show();
@@ -175,6 +201,7 @@ bool MainWidget::onForward(const PeerId &peer, ForwardWhatMessages what) {
 			_toForward.insert(item->id, item);
 		}
 	}
+	updateForwardingItemRemovedSubscription();
 	updateForwardingTexts();
 	Ui::showPeerHistory(peer, ShowAtUnreadMsgId);
 	_history->onClearSelected();
@@ -277,11 +304,31 @@ void MainWidget::updateForwardingTexts() {
 	_toForwardNameVersion = version;
 }
 
+void MainWidget::updateForwardingItemRemovedSubscription() {
+	if (_toForward.isEmpty()) {
+		unsubscribe(_forwardingItemRemovedSubscription);
+		_forwardingItemRemovedSubscription = 0;
+	} else if (!_forwardingItemRemovedSubscription) {
+		_forwardingItemRemovedSubscription = subscribe(Global::RefItemRemoved(), [this](HistoryItem *item) {
+			auto i = _toForward.find(item->id);
+			if (i == _toForward.cend() || i.value() != item) {
+				i = _toForward.find(item->id - ServerMaxMsgId);
+			}
+			if (i != _toForward.cend() && i.value() == item) {
+				_toForward.erase(i);
+				updateForwardingItemRemovedSubscription();
+				updateForwardingTexts();
+			}
+		});
+	}
+}
+
 void MainWidget::cancelForwarding() {
 	if (_toForward.isEmpty()) return;
 
 	_toForward.clear();
 	_history->cancelForwarding();
+	updateForwardingItemRemovedSubscription();
 }
 
 void MainWidget::finishForwarding(History *history, bool silent) {
@@ -489,9 +536,8 @@ void MainWidget::ui_repaintHistoryItem(const HistoryItem *item) {
 	if (item->history()->lastMsg == item) {
 		item->history()->updateChatListEntry();
 	}
-	if (_playerPanel && !_playerPanel->isHidden()) {
-		_playerPanel->ui_repaintHistoryItem(item);
-	}
+	_playerPlaylist->ui_repaintHistoryItem(item);
+	_playerPanel->ui_repaintHistoryItem(item);
 	if (_overview) _overview->ui_repaintHistoryItem(item);
 }
 
@@ -1359,32 +1405,6 @@ void MainWidget::changingMsgId(HistoryItem *row, MsgId newId) {
 	if (_overview) _overview->changingMsgId(row, newId);
 }
 
-void MainWidget::itemRemoved(HistoryItem *item) {
-	_dialogs->itemRemoved(item);
-	if (_history->peer() == item->history()->peer || (_history->peer() && _history->peer() == item->history()->peer->migrateTo())) {
-		_history->itemRemoved(item);
-	}
-	if (_overview && (_overview->peer() == item->history()->peer || (_overview->peer() && _overview->peer() == item->history()->peer->migrateTo()))) {
-		_overview->itemRemoved(item);
-	}
-	if (_playerPanel) {
-		_playerPanel->itemRemoved(item);
-	}
-	if (!_toForward.isEmpty()) {
-		SelectedItemSet::iterator i = _toForward.find(item->id);
-		if (i != _toForward.cend() && i.value() == item) {
-			_toForward.erase(i);
-			updateForwardingTexts();
-		} else {
-			i = _toForward.find(item->id - ServerMaxMsgId);
-			if (i != _toForward.cend() && i.value() == item) {
-				_toForward.erase(i);
-				updateForwardingTexts();
-			}
-		}
-	}
-}
-
 void MainWidget::itemEdited(HistoryItem *item) {
 	if (_history->peer() == item->history()->peer || (_history->peer() && _history->peer() == item->history()->peer->migrateTo())) {
 		_history->itemEdited(item);
@@ -1558,7 +1578,7 @@ void MainWidget::handleAudioUpdate(const AudioMsgId &audioId) {
 	}
 
 	if (playing == audioId && audioId.type() == AudioMsgId::Type::Song) {
-		if (!_playerPanel && !_player && Media::Player::exists()) {
+		if (!_playerUsingPanel && !_player && Media::Player::exists()) {
 			createPlayer();
 		}
 	}
@@ -1574,19 +1594,20 @@ void MainWidget::handleAudioUpdate(const AudioMsgId &audioId) {
 }
 
 void MainWidget::switchToPanelPlayer() {
+	if (_playerUsingPanel) return;
+	_playerUsingPanel = true;
+
 	_player->slideUp();
 	_playerVolume.destroyDelayed();
-	if (!_playerPanel) {
-		_playerPanel.create(this, Media::Player::Panel::Layout::Full);
-		_playerPanel->setPinCallback([this] { switchToFixedPlayer(); });
-		updateMediaPlayerPosition();
-		orderWidgets();
-		Media::Player::instance()->createdNotifier().notify(Media::Player::PanelEvent(_playerPanel), true);
-	}
+	_playerPlaylist->hideIgnoringEnterEvents();
+
+	Media::Player::instance()->usePanelPlayer().notify(true, true);
 }
 
 void MainWidget::switchToFixedPlayer() {
-	_playerPanel.destroyDelayed();
+	if (!_playerUsingPanel) return;
+	_playerUsingPanel = false;
+
 	if (!_player) {
 		createPlayer();
 	} else {
@@ -1597,6 +1618,9 @@ void MainWidget::switchToFixedPlayer() {
 			updateMediaPlayerPosition();
 		}
 	}
+
+	Media::Player::instance()->usePanelPlayer().notify(false, true);
+	_playerPanel->hideIgnoringEnterEvents();
 }
 
 void MainWidget::createPlayer() {
@@ -1623,7 +1647,7 @@ void MainWidget::playerHeightUpdated() {
 		_playerHeight = playerHeight;
 		updateControlsGeometry();
 	}
-	if (_playerPanel && !_playerHeight && _player->isHidden()) {
+	if (_playerUsingPanel && !_playerHeight && _player->isHidden()) {
 		_playerVolume.destroyDelayed();
 		_player.destroyDelayed();
 	}
@@ -2319,6 +2343,15 @@ Window::SectionSlideParams MainWidget::prepareShowAnimation(bool willHaveTopBarS
 	if (playerVolumeVisible) {
 		_playerVolume->hide();
 	}
+	auto playerPanelVisible = !_playerPanel->isHidden();
+	if (playerPanelVisible) {
+		_playerPanel->hide();
+	}
+	auto playerPlaylistVisible = !_playerPlaylist->isHidden();
+	if (playerPlaylistVisible) {
+		_playerPlaylist->hide();
+	}
+
 	if (selectingPeer() && Adaptive::OneColumn()) {
 		result.oldContentCache = myGrab(this, QRect(0, _playerHeight, _dialogsWidth, height() - _playerHeight));
 	} else if (_wideSection) {
@@ -2341,9 +2374,16 @@ Window::SectionSlideParams MainWidget::prepareShowAnimation(bool willHaveTopBarS
 		if (_overview) _overview->grabFinish();
 		_history->grabFinish();
 	}
+
 	if (playerVolumeVisible) {
 		_playerVolume->show();
 	}
+	if (playerPanelVisible) {
+		_playerPanel->show();
+	}
+	if (playerPlaylistVisible) {
+		_playerPlaylist->show();
+	}
 	if (_player) {
 		_player->showShadow();
 	}
@@ -2452,7 +2492,8 @@ void MainWidget::orderWidgets() {
 	}
 	_mediaType->raise();
 	_sideShadow->raise();
-	if (_playerPanel) _playerPanel->raise();
+	_playerPlaylist->raise();
+	_playerPanel->raise();
 	if (_hider) _hider->raise();
 }
 
@@ -2473,6 +2514,15 @@ QPixmap MainWidget::grabForShowAnimation(const Window::SectionSlideParams &param
 	if (playerVolumeVisible) {
 		_playerVolume->hide();
 	}
+	auto playerPanelVisible = !_playerPanel->isHidden();
+	if (playerPanelVisible) {
+		_playerPanel->hide();
+	}
+	auto playerPlaylistVisible = !_playerPlaylist->isHidden();
+	if (playerPlaylistVisible) {
+		_playerPlaylist->hide();
+	}
+
 	if (Adaptive::OneColumn()) {
 		result = myGrab(this, QRect(0, _playerHeight, _dialogsWidth, height() - _playerHeight));
 	} else {
@@ -2483,6 +2533,12 @@ QPixmap MainWidget::grabForShowAnimation(const Window::SectionSlideParams &param
 	if (playerVolumeVisible) {
 		_playerVolume->show();
 	}
+	if (playerPanelVisible) {
+		_playerPanel->show();
+	}
+	if (playerPlaylistVisible) {
+		_playerPlaylist->show();
+	}
 	if (_player) {
 		_player->showShadow();
 	}
@@ -2762,20 +2818,34 @@ void MainWidget::updateControlsGeometry() {
 	}
 	if (_overview) _overview->setGeometry(_history->geometry());
 	updateMediaPlayerPosition();
+	updateMediaPlaylistPosition(_playerPlaylist->x());
 	_contentScrollAddToY = 0;
 }
 
 void MainWidget::updateMediaPlayerPosition() {
-	if (_playerPanel) {
-		_playerPanel->moveToRight(0, 0);
-	}
-	if (_playerVolume && _player) {
+	_playerPanel->moveToRight(0, 0);
+	if (_player && _playerVolume) {
 		auto relativePosition = _player->entity()->getPositionForVolumeWidget();
 		auto playerMargins = _playerVolume->getMargin();
 		_playerVolume->moveToLeft(_player->x() + relativePosition.x() - playerMargins.left(), _player->y() + relativePosition.y() - playerMargins.top());
 	}
 }
 
+void MainWidget::updateMediaPlaylistPosition(int x) {
+	if (_player) {
+		auto playlistLeft = x;
+		auto playlistWidth = _playerPlaylist->width();
+		auto playlistTop = _player->y() + _player->height();
+		auto rightEdge = width();
+		if (playlistLeft + playlistWidth > rightEdge) {
+			playlistLeft = rightEdge - playlistWidth;
+		} else if (playlistLeft < 0) {
+			playlistLeft = 0;
+		}
+		_playerPlaylist->move(playlistLeft, playlistTop);
+	}
+}
+
 int MainWidget::contentScrollAddToY() const {
 	return _contentScrollAddToY;
 }
@@ -3529,7 +3599,8 @@ void MainWidget::onSelfParticipantUpdated(ChannelData *channel) {
 
 bool MainWidget::contentOverlapped(const QRect &globalRect) {
 	return (_history->contentOverlapped(globalRect) ||
-			(_playerPanel && _playerPanel->overlaps(globalRect)) ||
+			_playerPanel->overlaps(globalRect) ||
+			_playerPlaylist->overlaps(globalRect) ||
 			(_playerVolume && _playerVolume->overlaps(globalRect)) ||
 			_mediaType->overlaps(globalRect));
 }

Telegram/SourceFiles/mainwidget.h

@@ -307,7 +307,6 @@ public:
 	void preloadOverviews(PeerData *peer);
 	void mediaOverviewUpdated(PeerData *peer, MediaOverviewType type);
 	void changingMsgId(HistoryItem *row, MsgId newId);
-	void itemRemoved(HistoryItem *item);
 	void itemEdited(HistoryItem *item);
 
 	void loadMediaBack(PeerData *peer, MediaOverviewType type, bool many = false);
@@ -340,7 +339,6 @@ public:
 
 	bool hasForwardingItems();
 	void fillForwardingInfo(Text *&from, Text *&text, bool &serviceColor, ImagePtr &preview);
-	void updateForwardingTexts();
 	void cancelForwarding();
 	void finishForwarding(History *hist, bool silent); // send them
 
@@ -484,8 +482,12 @@ private:
 	void updateAdaptiveLayout();
 	void handleAudioUpdate(const AudioMsgId &audioId);
 	void updateMediaPlayerPosition();
+	void updateMediaPlaylistPosition(int x);
 	void updateControlsGeometry();
 
+	void updateForwardingTexts();
+	void updateForwardingItemRemovedSubscription();
+
 	void createPlayer();
 	void switchToPanelPlayer();
 	void switchToFixedPlayer();
@@ -520,6 +522,7 @@ private:
 	SelectedItemSet _toForward;
 	Text _toForwardFrom, _toForwardText;
 	int32 _toForwardNameVersion = 0;
+	int _forwardingItemRemovedSubscription = 0;
 
 	OrderedSet<WebPageId> _webPagesUpdated;
 	OrderedSet<GameId> _gamesUpdated;
@@ -589,9 +592,13 @@ private:
 	ChildWidget<Window::SectionWidget> _wideSection = { nullptr };
 	ChildWidget<OverviewWidget> _overview = { nullptr };
 	ChildWidget<Window::TopBarWidget> _topBar;
+
 	ChildWidget<Window::PlayerWrapWidget> _player = { nullptr };
 	ChildWidget<Media::Player::VolumeWidget> _playerVolume = { nullptr };
-	ChildWidget<Media::Player::Panel> _playerPanel = { nullptr };
+	ChildWidget<Media::Player::Panel> _playerPlaylist;
+	ChildWidget<Media::Player::Panel> _playerPanel;
+	bool _playerUsingPanel = false;
+
 	ConfirmBox *_forwardConfirm = nullptr; // for single column layout
 	ChildWidget<HistoryHider> _hider = { nullptr };
 	std_::vector_of_moveable<std_::unique_ptr<StackItem>> _stack;

Telegram/SourceFiles/mainwindow.cpp

@@ -90,7 +90,7 @@ MainWindow::MainWindow() {
 	iconbig32 = iconbig256.scaledToWidth(32, Qt::SmoothTransformation);
 	iconbig64 = iconbig256.scaledToWidth(64, Qt::SmoothTransformation);
 
-	subscribe(Global::RefNotifySettingsChanged(), [this](const Notify::ChangeType &type) {
+	subscribe(Global::RefNotifySettingsChanged(), [this](Notify::ChangeType type) {
 		if (type == Notify::ChangeType::DesktopEnabled) {
 			updateTrayMenu();
 			notifyClear();

Telegram/SourceFiles/media/player/media_player.style

@@ -239,13 +239,20 @@ mediaPlayerScroll: flatScroll(solidScroll) {
 }
 mediaPlayerListHeightMax: 280px;
 mediaPlayerListMarginBottom: 10px;
-mediaPlayerScrollShadow: icon {{ "player_playlist_shadow", #000000 }};
+mediaPlayerScrollShadow: icon {{ "playlist_shadow", #000000 }};
 
 mediaPlayerListMarginTop: 8px;
+mediaPlayerListIconFg: #ffffff;
 mediaPlayerFileLayout: OverviewFileLayout(overviewFileLayout) {
 	maxWidth: 344px;
 	songPadding: margins(17px, 7px, 10px, 6px);
 	songThumbSize: 36px;
 	songNameTop: 7px;
 	songStatusTop: 25px;
+	songIconBg: mediaPlayerActiveFg;
+	songOverBg: mediaPlayerActiveFg;
+	songPause: icon {{ "playlist_pause", mediaPlayerListIconFg }};
+	songPlay: icon {{ "playlist_play", mediaPlayerListIconFg }};
+	songCancel: icon {{ "playlist_cancel", mediaPlayerListIconFg }};
+	songDownload: icon {{ "playlist_download", mediaPlayerListIconFg }};
 }

Telegram/SourceFiles/media/player/media_player_cover.cpp

@@ -80,6 +80,7 @@ CoverWidget::CoverWidget(QWidget *parent) : TWidget(parent)
 , _pinPlayer(this, st::mediaPlayerPanelPinButton)
 , _repeatTrack(this, st::mediaPlayerRepeatButton) {
 	setAttribute(Qt::WA_OpaquePaintEvent);
+	resize(width(), st::mediaPlayerCoverHeight);
 
 	_playback->setChangeProgressCallback([this](float64 value) {
 		handleSeekProgress(value);
@@ -315,12 +316,14 @@ void CoverWidget::handlePlaylistUpdate() {
 void CoverWidget::createPrevNextButtons() {
 	if (!_previousTrack) {
 		_previousTrack.create(this, st::mediaPlayerPanelPreviousButton);
-		_nextTrack.create(this, st::mediaPlayerPanelNextButton);
+		_previousTrack->show();
 		_previousTrack->setClickedCallback([this]() {
 			if (exists()) {
 				instance()->previous();
 			}
 		});
+		_nextTrack.create(this, st::mediaPlayerPanelNextButton);
+		_nextTrack->show();
 		_nextTrack->setClickedCallback([this]() {
 			if (exists()) {
 				instance()->next();

Telegram/SourceFiles/media/player/media_player_instance.h

@@ -40,12 +40,6 @@ bool exists();
 class Instance;
 Instance *instance();
 
-class Panel;
-struct PanelEvent {
-	explicit PanelEvent(Panel *panel) : panel(panel) {
-	}
-	Panel *panel;
-};
 struct UpdatedEvent {
 	UpdatedEvent(const AudioMsgId *audioId, const AudioPlaybackState *playbackState) : audioId(audioId), playbackState(playbackState) {
 	}
@@ -87,11 +81,14 @@ public:
 		return _playlist;
 	}
 
-	base::Observable<PanelEvent> &createdNotifier() {
-		return _createdNotifier;
+	base::Observable<bool> &usePanelPlayer() {
+		return _usePanelPlayer;
 	}
-	base::Observable<PanelEvent> &destroyedNotifier() {
-		return _destroyedNotifier;
+	base::Observable<bool> &titleButtonOver() {
+		return _titleButtonOver;
+	}
+	base::Observable<bool> &playerWidgetOver() {
+		return _playerWidgetOver;
 	}
 	base::Observable<UpdatedEvent> &updatedNotifier() {
 		return _updatedNotifier;
@@ -133,8 +130,9 @@ private:
 	QList<FullMsgId> _playlist;
 	bool _isPlaying = false;
 
-	base::Observable<PanelEvent> _createdNotifier;
-	base::Observable<PanelEvent> _destroyedNotifier;
+	base::Observable<bool> _usePanelPlayer;
+	base::Observable<bool> _titleButtonOver;
+	base::Observable<bool> _playerWidgetOver;
 	base::Observable<UpdatedEvent> _updatedNotifier;
 	base::Observable<void> _playlistChangedNotifier;
 	base::Observable<void> _songChangedNotifier;

Telegram/SourceFiles/media/player/media_player_list.cpp

@@ -34,6 +34,9 @@ ListWidget::ListWidget() {
 	if (exists()) {
 		subscribe(instance()->playlistChangedNotifier(), [this] { playlistUpdated(); });
 	}
+	subscribe(Global::RefItemRemoved(), [this](HistoryItem *item) {
+		itemRemoved(item);
+	});
 }
 
 ListWidget::~ListWidget() {
@@ -143,10 +146,32 @@ void ListWidget::itemRemoved(HistoryItem *item) {
 	if (layoutIt != _layouts.cend()) {
 		auto layout = layoutIt.value();
 		_layouts.erase(layoutIt);
+
+		for (int i = 0, count = _list.size(); i != count; ++i) {
+			if (_list[i] == layout) {
+				_list.removeAt(i);
+				break;
+			}
+		}
 		delete layout;
 	}
 }
 
+QRect ListWidget::getCurrentTrackGeometry() const {
+	if (exists()) {
+		auto top = marginTop();
+		auto current = instance()->current();
+		for_const (auto layout, _list) {
+			auto layoutHeight = layout->height();
+			if (layout->getItem()->fullId() == current.contextId()) {
+				return QRect(0, top, width(), layoutHeight);
+			}
+			top += layoutHeight;
+		}
+	}
+	return QRect(0, height(), width(), 0);
+}
+
 int ListWidget::resizeGetHeight(int newWidth) {
 	auto result = 0;
 	for_const (auto layout, _list) {

Telegram/SourceFiles/media/player/media_player_list.h

@@ -34,7 +34,8 @@ public:
 	ListWidget();
 
 	void ui_repaintHistoryItem(const HistoryItem *item);
-	void itemRemoved(HistoryItem *item);
+
+	QRect getCurrentTrackGeometry() const;
 
 	~ListWidget();
 
@@ -47,6 +48,7 @@ protected:
 	int resizeGetHeight(int newWidth) override;
 
 private:
+	void itemRemoved(HistoryItem *item);
 	int marginTop() const;
 	void repaintItem(const HistoryItem *item);
 	void playlistUpdated();

Telegram/SourceFiles/media/player/media_player_panel.cpp

@@ -24,6 +24,7 @@ Copyright (c) 2014-2016 John Preston, https://desktop.telegram.org
 #include "media/player/media_player_cover.h"
 #include "media/player/media_player_list.h"
 #include "media/player/media_player_instance.h"
+#include "styles/style_overview.h"
 #include "styles/style_media_player.h"
 #include "ui/widgets/shadow.h"
 #include "mainwindow.h"
@@ -32,36 +33,25 @@ namespace Media {
 namespace Player {
 
 Panel::Panel(QWidget *parent, Layout layout) : TWidget(parent)
+, _layout(layout)
 , _shadow(st::defaultInnerDropdown.shadow)
-, _scroll(this, st::mediaPlayerScroll)
-, _scrollShadow(this, st::mediaPlayerScrollShadow) {
-	if (layout == Layout::Full) {
-		_cover.create(this);
-	}
+, _scroll(this, st::mediaPlayerScroll) {
 	_hideTimer.setSingleShot(true);
 	connect(&_hideTimer, SIGNAL(timeout()), this, SLOT(onHideStart()));
 
-	auto list = std_::make_unique<ListWidget>();
-	connect(list.get(), SIGNAL(heightUpdated()), this, SLOT(onListHeightUpdated()));
-	_scroll->setOwnedWidget(list.release());
-
 	_showTimer.setSingleShot(true);
 	connect(&_showTimer, SIGNAL(timeout()), this, SLOT(onShowStart()));
 
-	if (cPlatform() == dbipMac || cPlatform() == dbipMacOld) {
-		connect(App::wnd()->windowHandle(), SIGNAL(activeChanged()), this, SLOT(onWindowActiveChanged()));
-	}
-
 	hide();
-	onListHeightUpdated();
+	updateSize();
 }
 
 bool Panel::overlaps(const QRect &globalRect) {
 	if (isHidden() || _a_appearance.animating()) return false;
 
-	auto marginLeft = rtl() ? 0 : contentLeft();
-	auto marginRight = rtl() ? contentLeft() : 0;
-	return rect().marginsRemoved(QMargins(marginLeft, 0, marginRight, st::mediaPlayerPanelMarginBottom)).contains(QRect(mapFromGlobal(globalRect.topLeft()), globalRect.size()));
+	auto marginLeft = rtl() ? contentRight() : contentLeft();
+	auto marginRight = rtl() ? contentLeft() : contentRight();
+	return rect().marginsRemoved(QMargins(marginLeft, contentTop(), marginRight, contentBottom())).contains(QRect(mapFromGlobal(globalRect.topLeft()), globalRect.size()));
 }
 
 void Panel::onWindowActiveChanged() {
@@ -71,16 +61,28 @@ void Panel::onWindowActiveChanged() {
 }
 
 void Panel::resizeEvent(QResizeEvent *e) {
-	auto width = contentWidth();
-	_cover->resize(width, st::mediaPlayerCoverHeight);
-	_cover->moveToRight(0, 0);
+	updateControlsGeometry();
+}
 
-	auto scrollTop = _cover->height();
-	auto scrollHeight = qMax(contentHeight() - scrollTop - st::mediaPlayerListMarginBottom, 0);
+void Panel::onListHeightUpdated() {
+	updateSize();
+}
+
+void Panel::updateControlsGeometry() {
+	auto scrollTop = contentTop();
+	auto width = contentWidth();
+	if (_cover) {
+		_cover->resizeToWidth(width);
+		_cover->moveToRight(contentRight(), scrollTop);
+		scrollTop += _cover->height();
+		if (_scrollShadow) {
+			_scrollShadow->resizeToWidth(width);
+			_scrollShadow->moveToRight(contentRight(), scrollTop);
+		}
+	}
+	auto scrollHeight = qMax(height() - scrollTop - contentBottom() - scrollMarginBottom(), 0);
 	if (scrollHeight > 0) {
-		_scroll->setGeometryToRight(0, scrollTop, width, scrollHeight);
-		_scrollShadow->resizeToWidth(width);
-		_scrollShadow->moveToRight(0, scrollTop);
+		_scroll->setGeometryToRight(contentRight(), scrollTop, width, scrollHeight);
 	}
 	if (auto widget = static_cast<ScrolledWidget*>(_scroll->widget())) {
 		widget->resizeToWidth(width);
@@ -88,19 +90,28 @@ void Panel::resizeEvent(QResizeEvent *e) {
 	}
 }
 
-void Panel::onListHeightUpdated() {
-	updateSize();
-}
-
 void Panel::ui_repaintHistoryItem(const HistoryItem *item) {
 	if (auto list = static_cast<ListWidget*>(_scroll->widget())) {
 		list->ui_repaintHistoryItem(item);
 	}
 }
 
-void Panel::itemRemoved(HistoryItem *item) {
+int Panel::bestPositionFor(int left) const {
+	left -= contentLeft();
+	left -= st::mediaPlayerFileLayout.songPadding.left();
+	left -= st::mediaPlayerFileLayout.songThumbSize / 2;
+	return left;
+}
+
+void Panel::scrollPlaylistToCurrentTrack() {
 	if (auto list = static_cast<ListWidget*>(_scroll->widget())) {
-		list->itemRemoved(item);
+		auto rect = list->getCurrentTrackGeometry();
+		auto top = _scroll->scrollTop(), bottom = top + _scroll->height();
+		_scroll->scrollToY(rect.y());
+		//if (top > rect.y()) {
+		//} else if (bottom < rect.y() + rect.height()) {
+		//	_scroll->scrollToY(rect.y() + rect.height() - _scroll->height());
+		//}
 	}
 }
 
@@ -113,17 +124,23 @@ void Panel::onScroll() {
 }
 
 void Panel::updateSize() {
+	auto width = contentLeft() + st::mediaPlayerPanelWidth + contentRight();
+	auto height = contentTop();
+	if (_cover) {
+		height += _cover->height();
+	}
 	auto listHeight = 0;
 	if (auto widget = static_cast<ScrolledWidget*>(_scroll->widget())) {
 		listHeight = widget->height();
 	}
 	auto scrollVisible = (listHeight > 0);
 	auto scrollHeight = scrollVisible ? (qMin(listHeight, st::mediaPlayerListHeightMax) + st::mediaPlayerListMarginBottom) : 0;
-	auto width = contentLeft() + st::mediaPlayerPanelWidth;
-	auto height = st::mediaPlayerCoverHeight + scrollHeight + st::mediaPlayerPanelMarginBottom;
+	height += scrollHeight + contentBottom();
 	resize(width, height);
 	_scroll->setVisible(scrollVisible);
-	_scrollShadow->setVisible(scrollVisible);
+	if (_scrollShadow) {
+		_scrollShadow->setVisible(scrollVisible);
+	}
 }
 
 void Panel::paintEvent(QPaintEvent *e) {
@@ -146,13 +163,19 @@ void Panel::paintEvent(QPaintEvent *e) {
 	}
 
 	// draw shadow
-	auto shadowedRect = myrtlrect(contentLeft(), 0, contentWidth(), height() - st::mediaPlayerPanelMarginBottom);
-	auto shadowedSides = (rtl() ? Ui::RectShadow::Side::Right : Ui::RectShadow::Side::Left) | Ui::RectShadow::Side::Bottom;
+	using Side = Ui::RectShadow::Side;
+	auto shadowedRect = myrtlrect(contentLeft(), contentTop(), contentWidth(), contentHeight());
+	auto shadowedSides = (rtl() ? Side::Right : Side::Left) | Side::Bottom;
+	if (_layout != Layout::Full) {
+		shadowedSides |= (rtl() ? Side::Left : Side::Right) | Side::Top;
+	}
 	_shadow.paint(p, shadowedRect, st::defaultInnerDropdown.shadowShift, shadowedSides);
 	p.fillRect(shadowedRect, st::windowBg);
 }
 
 void Panel::enterEvent(QEvent *e) {
+	if (_ignoringEnterEvents) return;
+
 	_hideTimer.stop();
 	if (_a_appearance.animating(getms())) {
 		onShowStart();
@@ -172,7 +195,7 @@ void Panel::leaveEvent(QEvent *e) {
 	return TWidget::leaveEvent(e);
 }
 
-void Panel::otherEnter() {
+void Panel::showFromOther() {
 	_hideTimer.stop();
 	if (_a_appearance.animating(getms())) {
 		onShowStart();
@@ -181,7 +204,7 @@ void Panel::otherEnter() {
 	}
 }
 
-void Panel::otherLeave() {
+void Panel::hideFromOther() {
 	_showTimer.stop();
 	if (_a_appearance.animating(getms())) {
 		onHideStart();
@@ -190,20 +213,56 @@ void Panel::otherLeave() {
 	}
 }
 
-void Panel::setPinCallback(PinCallback &&callback) {
-	if (_cover) {
-		_cover->setPinCallback(std_::move(callback));
+void Panel::ensureCreated() {
+	if (_scroll->widget()) return;
+
+	if (_layout == Layout::Full) {
+		_cover.create(this);
+		setPinCallback(std_::move(_pinCallback));
+
+		_scrollShadow.create(this, st::mediaPlayerScrollShadow);
+	}
+	auto list = std_::make_unique<ListWidget>();
+	connect(list.get(), SIGNAL(heightUpdated()), this, SLOT(onListHeightUpdated()));
+	_scroll->setOwnedWidget(list.release());
+
+	if (cPlatform() == dbipMac || cPlatform() == dbipMacOld) {
+		if (auto window = App::wnd()) {
+			connect(window->windowHandle(), SIGNAL(activeChanged()), this, SLOT(onWindowActiveChanged()));
+		}
+	}
+
+	updateSize();
+	updateControlsGeometry();
+	_ignoringEnterEvents = false;
+}
+
+void Panel::performDestroy() {
+	if (!_scroll->widget()) return;
+
+	_cover.destroy();
+	auto list = _scroll->takeWidget();
+	list->hide();
+	list->deleteLater();
+
+	if (cPlatform() == dbipMac || cPlatform() == dbipMacOld) {
+		if (auto window = App::wnd()) {
+			disconnect(window->windowHandle(), SIGNAL(activeChanged()), this, SLOT(onWindowActiveChanged()));
+		}
 	}
 }
 
-Panel::~Panel() {
-	if (exists()) {
-		instance()->destroyedNotifier().notify(Media::Player::PanelEvent(this), true);
+void Panel::setPinCallback(PinCallback &&callback) {
+	_pinCallback = std_::move(callback);
+	if (_cover) {
+		_cover->setPinCallback(PinCallback(_pinCallback));
 	}
 }
 
 void Panel::onShowStart() {
+	ensureCreated();
 	if (isHidden()) {
+		scrollPlaylistToCurrentTrack();
 		show();
 	} else if (!_hiding) {
 		return;
@@ -212,8 +271,17 @@ void Panel::onShowStart() {
 	startAnimation();
 }
 
+void Panel::hideIgnoringEnterEvents() {
+	_ignoringEnterEvents = true;
+	if (isHidden()) {
+		hidingFinished();
+	} else {
+		onHideStart();
+	}
+}
+
 void Panel::onHideStart() {
-	if (_hiding) return;
+	if (_hiding || isHidden()) return;
 
 	_hiding = true;
 	startAnimation();
@@ -242,23 +310,27 @@ void Panel::appearanceCallback() {
 void Panel::hidingFinished() {
 	hide();
 	_cache = QPixmap();
+	performDestroy();
 }
 
 int Panel::contentLeft() const {
 	return st::mediaPlayerPanelMarginLeft;
 }
 
-int Panel::contentHeight() const {
-	return height() - st::mediaPlayerPanelMarginBottom;
+int Panel::contentTop() const {
+	return (_layout == Layout::Full) ? 0 : st::mediaPlayerPanelMarginLeft;
 }
 
-bool Panel::eventFilter(QObject *obj, QEvent *e) {
-	if (e->type() == QEvent::Enter) {
-		otherEnter();
-	} else if (e->type() == QEvent::Leave) {
-		otherLeave();
-	}
-	return false;
+int Panel::contentRight() const {
+	return (_layout == Layout::Full) ? 0 : st::mediaPlayerPanelMarginLeft;
+}
+
+int Panel::contentBottom() const {
+	return st::mediaPlayerPanelMarginBottom;
+}
+
+int Panel::scrollMarginBottom() const {
+	return st::mediaPlayerPanelMarginBottom;
 }
 
 } // namespace Player

Telegram/SourceFiles/media/player/media_player_panel.h

@@ -34,7 +34,7 @@ namespace Player {
 class CoverWidget;
 class ListWidget;
 
-class Panel : public TWidget, private base::Subscriber {
+class Panel : public TWidget {
 	Q_OBJECT
 
 public:
@@ -44,19 +44,19 @@ public:
 	};
 	Panel(QWidget *parent, Layout layout);
 
-	void setLayout(Layout layout);
 	bool overlaps(const QRect &globalRect);
 
-	void otherEnter();
-	void otherLeave();
+	void hideIgnoringEnterEvents();
 
-	using PinCallback = base::lambda_unique<void()>;
+	void showFromOther();
+	void hideFromOther();
+
+	using PinCallback = base::lambda_wrap<void()>;
 	void setPinCallback(PinCallback &&callback);
 
 	void ui_repaintHistoryItem(const HistoryItem *item);
-	void itemRemoved(HistoryItem *item);
 
-	~Panel();
+	int bestPositionFor(int left) const;
 
 protected:
 	void resizeEvent(QResizeEvent *e) override;
@@ -64,40 +64,53 @@ protected:
 	void enterEvent(QEvent *e) override;
 	void leaveEvent(QEvent *e) override;
 
-	bool eventFilter(QObject *obj, QEvent *e) override;
-
 private slots:
 	void onShowStart();
 	void onHideStart();
+
 	void onScroll();
-
 	void onListHeightUpdated();
-
 	void onWindowActiveChanged();
 
 private:
+	void ensureCreated();
+	void performDestroy();
+
+	void updateControlsGeometry();
+
 	void updateSize();
 	void appearanceCallback();
 	void hidingFinished();
 	int contentLeft() const;
+	int contentTop() const;
+	int contentRight() const;
+	int contentBottom() const;
+	int scrollMarginBottom() const;
 	int contentWidth() const {
-		return width() - contentLeft();
+		return width() - contentLeft() - contentRight();
+	}
+	int contentHeight() const {
+		return height() - contentTop() - contentBottom();;
 	}
-	int contentHeight() const;
 
 	void startAnimation();
+	void scrollPlaylistToCurrentTrack();
 
+	Layout _layout;
 	bool _hiding = false;
 
 	QPixmap _cache;
 	FloatAnimation _a_appearance;
 
+	bool _ignoringEnterEvents = false;
+
 	QTimer _hideTimer, _showTimer;
 
 	Ui::RectShadow _shadow;
+	PinCallback _pinCallback;
 	ChildWidget<CoverWidget> _cover = { nullptr };
 	ChildWidget<ScrollArea> _scroll;
-	ChildWidget<Ui::GradientShadow> _scrollShadow;
+	ChildWidget<Ui::GradientShadow> _scrollShadow = { nullptr };
 
 };
 

Telegram/SourceFiles/media/player/media_player_title_button.cpp

@@ -102,6 +102,20 @@ void TitleButton::paintIcon(Painter &p) {
 	_layout->paint(p, icon);
 }
 
+void TitleButton::enterEvent(QEvent *e) {
+	if (exists()) {
+		instance()->titleButtonOver().notify(true, true);
+	}
+	return Button::enterEvent(e);
+}
+
+void TitleButton::leaveEvent(QEvent *e) {
+	if (exists()) {
+		instance()->titleButtonOver().notify(false, true);
+	}
+	return Button::leaveEvent(e);
+}
+
 TitleButton::~TitleButton() = default;
 
 } // namespace Player

Telegram/SourceFiles/media/player/media_player_title_button.h

@@ -37,6 +37,8 @@ public:
 
 protected:
 	void paintEvent(QPaintEvent *e) override;
+	void enterEvent(QEvent *e) override;
+	void leaveEvent(QEvent *e) override;
 
 	void onStateChanged(int oldState, ButtonStateChangeSource source) override;
 

Telegram/SourceFiles/media/player/media_player_widget.cpp

@@ -81,8 +81,12 @@ Widget::Widget(QWidget *parent) : TWidget(parent)
 , _shadow(this, st::shadowColor)
 , _playback(new Ui::FilledSlider(this, st::mediaPlayerPlayback)) {
 	setAttribute(Qt::WA_OpaquePaintEvent);
+	setMouseTracking(true);
 	resize(st::wndMinWidth, st::mediaPlayerHeight + st::lineWidth);
 
+	_nameLabel->setAttribute(Qt::WA_TransparentForMouseEvents);
+	_timeLabel->setAttribute(Qt::WA_TransparentForMouseEvents);
+
 	_playback->setChangeProgressCallback([this](float64 value) {
 		handleSeekProgress(value);
 	});
@@ -226,6 +230,28 @@ void Widget::paintEvent(QPaintEvent *e) {
 	}
 }
 
+void Widget::leaveEvent(QEvent *e) {
+	updateOverLabelsState(false);
+}
+
+void Widget::mouseMoveEvent(QMouseEvent *e) {
+	updateOverLabelsState(e->pos());
+}
+
+void Widget::updateOverLabelsState(QPoint pos) {
+	auto left = getLabelsLeft();
+	auto right = getLabelsRight();
+	auto labels = myrtlrect(left, 0, width() - right - left, height() - st::mediaPlayerPlayback.fullWidth);
+	auto over = labels.contains(pos);
+	updateOverLabelsState(over);
+}
+
+void Widget::updateOverLabelsState(bool over) {
+	if (exists()) {
+		instance()->playerWidgetOver().notify(over, true);
+	}
+}
+
 void Widget::updatePlayPrevNextPositions() {
 	auto left = st::mediaPlayerPlayLeft;
 	auto top = st::mediaPlayerPlayTop;
@@ -238,15 +264,24 @@ void Widget::updatePlayPrevNextPositions() {
 	}
 }
 
-void Widget::updateLabelsGeometry() {
-	auto left = st::mediaPlayerPlayLeft + _playPause->width();
+int Widget::getLabelsLeft() const {
+	auto result = st::mediaPlayerPlayLeft + _playPause->width();
 	if (_previousTrack) {
-		left += _previousTrack->width() + st::mediaPlayerPlaySkip + _nextTrack->width() + st::mediaPlayerPlaySkip;
+		result += _previousTrack->width() + st::mediaPlayerPlaySkip + _nextTrack->width() + st::mediaPlayerPlaySkip;
 	}
-	left += st::mediaPlayerPadding;
+	result += st::mediaPlayerPadding;
+	return result;
+}
 
-	auto right = st::mediaPlayerCloseRight + _close->width() + _repeatTrack->width() + _volumeToggle->width();
-	right += st::mediaPlayerPadding;
+int Widget::getLabelsRight() const {
+	auto result = st::mediaPlayerCloseRight + _close->width() + _repeatTrack->width() + _volumeToggle->width();
+	result += st::mediaPlayerPadding;
+	return result;
+}
+
+void Widget::updateLabelsGeometry() {
+	auto left = getLabelsLeft();
+	auto right = getLabelsRight();
 
 	auto widthForName = width() - left - right;
 	widthForName -= _timeLabel->width() + 2 * st::normalFont->spacew;
@@ -367,12 +402,14 @@ void Widget::handlePlaylistUpdate() {
 void Widget::createPrevNextButtons() {
 	if (!_previousTrack) {
 		_previousTrack.create(this, st::mediaPlayerPreviousButton);
-		_nextTrack.create(this, st::mediaPlayerNextButton);
+		_previousTrack->show();
 		_previousTrack->setClickedCallback([this]() {
 			if (exists()) {
 				instance()->previous();
 			}
 		});
+		_nextTrack.create(this, st::mediaPlayerNextButton);
+		_nextTrack->show();
 		_nextTrack->setClickedCallback([this]() {
 			if (exists()) {
 				instance()->next();

Telegram/SourceFiles/media/player/media_player_widget.h

@@ -59,10 +59,18 @@ protected:
 	void resizeEvent(QResizeEvent *e) override;
 	void paintEvent(QPaintEvent *e) override;
 
+	void leaveEvent(QEvent *e) override;
+	void mouseMoveEvent(QMouseEvent *e) override;
+
 private:
 	void handleSeekProgress(float64 progress);
 	void handleSeekFinished(float64 progress);
 
+	int getLabelsLeft() const;
+	int getLabelsRight() const;
+	void updateOverLabelsState(QPoint pos);
+	void updateOverLabelsState(bool over);
+
 	void updatePlayPrevNextPositions();
 	void updateLabelsGeometry();
 	void updateRepeatTrackIcon();
@@ -81,6 +89,7 @@ private:
 	int64 _seekPositionMs = -1;
 	int64 _lastDurationMs = 0;
 	QString _time;
+	bool _mouseOverLabels = false;
 
 	class PlayButton;
 	ChildWidget<FlatLabel> _nameLabel;

Telegram/SourceFiles/media/view/media_clip_playback.cpp

@@ -33,7 +33,9 @@ Playback::Playback(Ui::ContinuousSlider *slider) : _slider(slider) {
 void Playback::updateState(const AudioPlaybackState &playbackState) {
 	qint64 position = 0, duration = playbackState.duration;
 
-	setDisabled(false);
+	auto wasDisabled = _slider->isDisabled();
+	if (wasDisabled) setDisabled(false);
+
 	_playing = !(playbackState.state & AudioPlayerStoppedMask);
 	if (_playing || playbackState.state == AudioPlayerStopped) {
 		position = playbackState.position;
@@ -49,7 +51,7 @@ void Playback::updateState(const AudioPlaybackState &playbackState) {
 	} else if (duration) {
 		progress = duration ? snap(float64(position) / duration, 0., 1.) : 0.;
 	}
-	if (duration != _duration || position != _position) {
+	if (duration != _duration || position != _position || wasDisabled) {
 		auto animated = (duration && _duration && progress > _slider->value());
 		_slider->setValue(progress, animated);
 		_position = position;

Telegram/SourceFiles/overview/overview.style

@@ -19,6 +19,7 @@ Full license: https://github.com/telegramdesktop/tdesktop/blob/master/LICENSE
 Copyright (c) 2014-2016 John Preston, https://desktop.telegram.org
 */
 using "basic.style";
+using "history/history.style";
 
 OverviewFileLayout {
 	maxWidth: pixels;
@@ -26,6 +27,13 @@ OverviewFileLayout {
 	songThumbSize: pixels;
 	songNameTop: pixels;
 	songStatusTop: pixels;
+	songIconBg: color;
+	songOverBg: color;
+	songPause: icon;
+	songPlay: icon;
+	songCancel: icon;
+	songDownload: icon;
+
 	filePadding: margins;
 	fileThumbSize: pixels;
 	fileNameTop: pixels;
@@ -61,6 +69,13 @@ overviewFileLayout: OverviewFileLayout {
 	songThumbSize: msgFileSize;
 	songNameTop: msgFileNameTop;
 	songStatusTop: msgFileStatusTop;
+	songIconBg: msgFileInBg;
+	songOverBg: msgFileInBgOver;
+	songPause: historyFileInPause;
+	songPlay: historyFileInPlay;
+	songCancel: historyFileInCancel;
+	songDownload: historyFileInDownload;
+
 	filePadding: margins(0px, 3px, 16px, 3px);
 	fileThumbSize: 70px;
 	fileNameTop: 7px;

Telegram/SourceFiles/overview/overview_layout.cpp

@@ -667,10 +667,10 @@ void Document::paint(Painter &p, const QRect &clip, TextSelection selection, con
 			} else if (_a_iconOver.animating()) {
 				_a_iconOver.step(context->ms);
 				float64 over = a_iconOver.current();
-				p.setBrush(style::interpolate(st::msgFileInBg, st::msgFileInBgOver, over));
+				p.setBrush(style::interpolate(_st.songIconBg, _st.songOverBg, over));
 			} else {
 				bool over = ClickHandler::showAsActive(loaded ? _openl : (_data->loading() ? _cancell : _openl));
-				p.setBrush(over ? st::msgFileInBgOver : st::msgFileInBg);
+				p.setBrush(over ? _st.songOverBg : _st.songIconBg);
 			}
 
 			p.setRenderHint(QPainter::HighQualityAntialiasing);
@@ -685,13 +685,13 @@ void Document::paint(Painter &p, const QRect &clip, TextSelection selection, con
 
 			auto icon = ([showPause, loaded, this, selected] {
 				if (showPause) {
-					return &(selected ? st::historyFileInPauseSelected : st::historyFileInPause);
+					return &(selected ? st::historyFileInPauseSelected : _st.songPause);
 				} else if (loaded) {
-					return &(selected ? st::historyFileInPlaySelected : st::historyFileInPlay);
+					return &(selected ? st::historyFileInPlaySelected : _st.songPlay);
 				} else if (_data->loading()) {
-					return &(selected ? st::historyFileInCancelSelected : st::historyFileInCancel);
+					return &(selected ? st::historyFileInCancelSelected : _st.songCancel);
 				}
-				return &(selected ? st::historyFileInDownloadSelected : st::historyFileInDownload);
+				return &(selected ? st::historyFileInDownloadSelected : _st.songDownload);
 			})();
 			icon->paintInCenter(p, inner);
 		}

Telegram/SourceFiles/overviewwidget.cpp

@@ -38,59 +38,24 @@ Copyright (c) 2014-2016 John Preston, https://desktop.telegram.org
 
 // flick scroll taken from http://qt-project.org/doc/qt-4.8/demos-embedded-anomaly-src-flickcharm-cpp.html
 
-OverviewInner::OverviewInner(OverviewWidget *overview, ScrollArea *scroll, PeerData *peer, MediaOverviewType type) : QWidget(0)
+OverviewInner::OverviewInner(OverviewWidget *overview, ScrollArea *scroll, PeerData *peer, MediaOverviewType type) : TWidget(nullptr)
 , _overview(overview)
 , _scroll(scroll)
-, _resizeIndex(-1)
-, _resizeSkip(0)
 , _peer(peer->migrateTo() ? peer->migrateTo() : peer)
 , _type(type)
 , _reversed(_type != OverviewFiles && _type != OverviewLinks)
 , _migrated(_peer->migrateFrom() ? App::history(_peer->migrateFrom()->id) : 0)
 , _history(App::history(_peer->id))
 , _channel(peerToChannel(_peer->id))
-, _selMode(false)
-, _rowsLeft(0)
 , _rowWidth(st::msgMinWidth)
 , _search(this, st::dlgFilter, lang(lng_dlg_filter))
 , _cancelSearch(this, st::btnCancelSearch)
 , _itemsToBeLoaded(LinksOverviewPerPage * 2)
-, _photosInRow(1)
-, _inSearch(false)
-, _searchFull(false)
-, _searchFullMigrated(false)
-, _searchRequest(0)
-, _lastSearchId(0)
-, _lastSearchMigratedId(0)
-, _searchedCount(0)
-, _width(st::wndMinWidth)
-, _height(0)
-, _minHeight(0)
-, _marginTop(0)
-, _marginBottom(0)
-, _cursor(style::cur_default)
-, _cursorState(HistoryDefaultCursorState)
-, _dragAction(NoDrag)
-, _dragItem(0)
-, _selectedMsgId(0)
-, _dragItemIndex(-1)
-, _mousedItem(0)
-, _mousedItemIndex(-1)
-, _dragWasInactive(false)
-, _dragSelFrom(0)
-, _dragSelTo(0)
-, _dragSelecting(false)
-, _touchScroll(false)
-, _touchSelect(false)
-, _touchInProgress(false)
-, _touchScrollState(TouchScrollManual)
-, _touchPrevPosValid(false)
-, _touchWaitingAcceleration(false)
-, _touchSpeedTime(0)
-, _touchAccelerationTime(0)
-, _touchTime(0)
-, _menu(0) {
+, _width(st::wndMinWidth) {
 	subscribe(FileDownload::ImageLoaded(), [this] { update(); });
+	subscribe(Global::RefItemRemoved(), [this](HistoryItem *item) {
+		itemRemoved(item);
+	});
 
 	resize(_width, st::wndMinHeight);
 
@@ -1733,6 +1698,10 @@ void OverviewInner::changingMsgId(HistoryItem *row, MsgId newId) {
 }
 
 void OverviewInner::itemRemoved(HistoryItem *item) {
+	if (_history != item->history() && _migrated != item->history()) {
+		return;
+	}
+
 	MsgId msgId = (item->history() == _migrated) ? -item->id : item->id;
 	if (_dragItem == msgId) {
 		dragActionCancel();
@@ -1741,13 +1710,13 @@ void OverviewInner::itemRemoved(HistoryItem *item) {
 		_selectedMsgId = 0;
 	}
 
-	SelectedItems::iterator i = _selected.find(msgId);
+	auto i = _selected.find(msgId);
 	if (i != _selected.cend()) {
 		_selected.erase(i);
 		_overview->updateTopBarSelection();
 	}
 
-	LayoutItems::iterator j = _layoutItems.find(item);
+	auto j = _layoutItems.find(item);
 	if (j != _layoutItems.cend()) {
 		int32 index = _items.indexOf(j.value());
 		if (index >= 0) {
@@ -2218,10 +2187,6 @@ void OverviewWidget::notify_historyItemLayoutChanged(const HistoryItem *item) {
 	}
 }
 
-void OverviewWidget::itemRemoved(HistoryItem *row) {
-	_inner.itemRemoved(row);
-}
-
 void OverviewWidget::fillSelectedItems(SelectedItemSet &sel, bool forDelete) {
 	_inner.fillSelectedItems(sel, forDelete);
 }

Telegram/SourceFiles/overviewwidget.h

@@ -36,7 +36,7 @@ class PlainShadow;
 } // namespace Ui
 
 class OverviewWidget;
-class OverviewInner : public QWidget, public AbstractTooltipShower, public RPCSender, private base::Subscriber {
+class OverviewInner : public TWidget, public AbstractTooltipShower, public RPCSender, private base::Subscriber {
 	Q_OBJECT
 
 public:
@@ -73,7 +73,6 @@ public:
 	void mediaOverviewUpdated();
 	void changingMsgId(HistoryItem *row, MsgId newId);
 	void repaintItem(const HistoryItem *msg);
-	void itemRemoved(HistoryItem *item);
 
 	void getSelectionState(int32 &selectedForForward, int32 &selectedForDelete) const;
 	void clearSelectedItems(bool onlyTextSelection = false);
@@ -124,6 +123,7 @@ public slots:
 	void onNeedSearchMessages();
 
 private:
+	void itemRemoved(HistoryItem *item);
 	MsgId complexMsgId(const HistoryItem *item) const;
 
 	bool itemMigrated(MsgId msgId) const;
@@ -152,7 +152,8 @@ private:
 
 	OverviewWidget *_overview;
 	ScrollArea *_scroll;
-	int32 _resizeIndex, _resizeSkip;
+	int _resizeIndex = -1;
+	int _resizeSkip = 0;
 
 	PeerData *_peer;
 	MediaOverviewType _type;
@@ -160,10 +161,11 @@ private:
 	History *_migrated, *_history;
 	ChannelId _channel;
 
-	bool _selMode;
+	bool _selMode = false;
 	TextSelection itemSelectedValue(int32 index) const;
 
-	int32 _rowsLeft, _rowWidth;
+	int _rowsLeft = 0;
+	int _rowWidth = 0;
 
 	typedef QVector<Overview::Layout::AbstractItem*> Items;
 	Items _items;
@@ -181,15 +183,18 @@ private:
 	int32 _itemsToBeLoaded;
 
 	// photos
-	int32 _photosInRow;
+	int32 _photosInRow = 1;
 
 	QTimer _searchTimer;
 	QString _searchQuery;
-	bool _inSearch, _searchFull, _searchFullMigrated;
-	mtpRequestId _searchRequest;
+	bool _inSearch = false;
+	bool _searchFull = false;
+	bool _searchFullMigrated = false;
+	mtpRequestId _searchRequest = 0;
 	History::MediaOverview _searchResults;
-	MsgId _lastSearchId, _lastSearchMigratedId;
-	int32 _searchedCount;
+	MsgId _lastSearchId = 0;
+	MsgId _lastSearchMigratedId = 0;
+	int _searchedCount = 0;
 	enum SearchRequestType {
 		SearchFromStart,
 		SearchFromOffset,
@@ -205,13 +210,17 @@ private:
 	typedef QMap<mtpRequestId, QString> SearchQueries;
 	SearchQueries _searchQueries;
 
-	int32 _width, _height, _minHeight, _marginTop, _marginBottom;
+	int _width = 0;
+	int _height = 0;
+	int _minHeight = 0;
+	int _marginTop = 0;
+	int _marginBottom = 0;
 
 	QTimer _linkTipTimer;
 
 	// selection support, like in HistoryWidget
-	Qt::CursorShape _cursor;
-	HistoryCursorState _cursorState;
+	style::cursor _cursor = style::cur_default;
+	HistoryCursorState _cursorState = HistoryDefaultCursorState;
 	using SelectedItems = QMap<MsgId, TextSelection>;
 	SelectedItems _selected;
 	enum DragAction {
@@ -221,32 +230,40 @@ private:
 		PrepareSelect = 0x03,
 		Selecting = 0x04,
 	};
-	DragAction _dragAction;
+	DragAction _dragAction = NoDrag;
 	QPoint _dragStartPos, _dragPos;
-	MsgId _dragItem, _selectedMsgId;
-	int32 _dragItemIndex;
-	MsgId _mousedItem;
-	int32 _mousedItemIndex;
+	MsgId _dragItem = 0;
+	MsgId _selectedMsgId = 0;
+	int _dragItemIndex = -1;
+	MsgId _mousedItem = 0;
+	int _mousedItemIndex = -1;
 	uint16 _dragSymbol;
-	bool _dragWasInactive;
+	bool _dragWasInactive = false;
 
 	ClickHandlerPtr _contextMenuLnk;
 
-	MsgId _dragSelFrom, _dragSelTo;
-	int32 _dragSelFromIndex, _dragSelToIndex;
-	bool _dragSelecting;
+	MsgId _dragSelFrom = 0;
+	MsgId _dragSelTo = 0;
+	int _dragSelFromIndex = -1;
+	int _dragSelToIndex = -1;
+	bool _dragSelecting = false;
 
-	bool _touchScroll, _touchSelect, _touchInProgress;
+	bool _touchScroll = false;
+	bool _touchSelect = false;
+	bool _touchInProgress = false;
 	QPoint _touchStart, _touchPrevPos, _touchPos;
 	QTimer _touchSelectTimer;
 
-	TouchScrollState _touchScrollState;
-	bool _touchPrevPosValid, _touchWaitingAcceleration;
+	TouchScrollState _touchScrollState = TouchScrollManual;
+	bool _touchPrevPosValid = false;
+	bool _touchWaitingAcceleration = false;
 	QPoint _touchSpeed;
-	uint64 _touchSpeedTime, _touchAccelerationTime, _touchTime;
+	uint64 _touchSpeedTime = 0;
+	uint64 _touchAccelerationTime = 0;
+	uint64 _touchTime = 0;
 	QTimer _touchScrollTimer;
 
-	PopupMenu *_menu;
+	PopupMenu *_menu = nullptr;
 };
 
 class OverviewWidget : public TWidget, public RPCSender {

Telegram/SourceFiles/settings/settings_notifications_widget.cpp

@@ -35,7 +35,7 @@ namespace Settings {
 NotificationsWidget::NotificationsWidget(QWidget *parent, UserData *self) : BlockWidget(parent, self, lang(lng_settings_section_notify)) {
 	createControls();
 
-	subscribe(Global::RefNotifySettingsChanged(), [this](const Notify::ChangeType &type) {
+	subscribe(Global::RefNotifySettingsChanged(), [this](Notify::ChangeType type) {
 		if (type == Notify::ChangeType::DesktopEnabled) {
 			desktopEnabledUpdated();
 		} else if (type == Notify::ChangeType::ViewParams) {

Telegram/SourceFiles/title.cpp

@@ -103,18 +103,8 @@ TitleWidget::TitleWidget(QWidget *parent) : TWidget(parent)
 
 	subscribe(Adaptive::Changed(), [this]() { updateAdaptiveLayout(); });
 	if (Media::Player::exists()) {
-		subscribe(Media::Player::instance()->createdNotifier(), [this](const Media::Player::PanelEvent &e) {
-			if (!_player) {
-				_player.create(this);
-				updateControlsVisibility();
-			}
-			_player->installEventFilter(e.panel);
-		});
-		subscribe(Media::Player::instance()->destroyedNotifier(), [this](const Media::Player::PanelEvent &e) {
-			if (_player) {
-				_player.destroyDelayed();
-				updateControlsVisibility();
-			}
+		subscribe(Media::Player::instance()->usePanelPlayer(), [this](bool usePanel) {
+			updatePlayerButton(usePanel);
 		});
 	}
 
@@ -179,6 +169,15 @@ void TitleWidget::onAbout() {
 	Ui::showLayer(new AboutBox());
 }
 
+void TitleWidget::updatePlayerButton(bool usePanel) {
+	if (usePanel && !_player) {
+		_player.create(this);
+	} else if (!usePanel && _player) {
+		_player.destroyDelayed();
+	}
+	updateControlsVisibility();
+}
+
 void TitleWidget::updateControlsPosition() {
 	QPoint p(width() - ((cPlatform() == dbipWindows && lastMaximized) ? 0 : st::sysBtnDelta), 0);
 

Telegram/SourceFiles/title.h

@@ -27,7 +27,6 @@ class MainWindow;
 namespace Media {
 namespace Player {
 class TitleButton;
-class PanelEvent;
 } // namespace Player
 } // namespace Media
 class AudioMsgId;
@@ -65,6 +64,7 @@ protected:
 	void resizeEvent(QResizeEvent *e) override;
 
 private:
+	void updatePlayerButton(bool usePanel);
 	void updateAdaptiveLayout();
 	void updateRestartButtonVisibility();
 	void updateMenuButtonsVisibility();

Telegram/SourceFiles/ui/widgets/continuous_slider.h

@@ -39,6 +39,9 @@ public:
 	void setValue(float64 value, bool animated);
 	void setFadeOpacity(float64 opacity);
 	void setDisabled(bool disabled);
+	bool isDisabled() const {
+		return _disabled;
+	}
 
 	using Callback = base::lambda_unique<void(float64)>;
 	void setChangeProgressCallback(Callback &&callback) {
@@ -71,9 +74,6 @@ protected:
 	float64 getCurrentOverFactor(uint64 ms) {
 		return _disabled ? 0. : _a_over.current(ms, _over ? 1. : 0.);
 	}
-	bool isDisabled() const {
-		return _disabled;
-	}
 	Direction getDirection() const {
 		return _direction;
 	}

Telegram/SourceFiles/window/notifications_manager_default.cpp

@@ -74,7 +74,7 @@ Manager::Manager() {
 			notification->updatePeerPhoto();
 		}
 	});
-	subscribe(Global::RefNotifySettingsChanged(), [this](const Notify::ChangeType &change) {
+	subscribe(Global::RefNotifySettingsChanged(), [this](Notify::ChangeType change) {
 		settingsChanged(change);
 	});
 	_inputCheckTimer.setTimeoutHandler([this] { checkLastInput(); });
@@ -89,7 +89,7 @@ bool Manager::hasReplyingNotification() const {
 	return false;
 }
 
-void Manager::settingsChanged(const Notify::ChangeType &change) {
+void Manager::settingsChanged(Notify::ChangeType change) {
 	if (change == Notify::ChangeType::Corner) {
 		auto startPosition = notificationStartPosition();
 		auto shiftDirection = notificationShiftDirection();

Telegram/SourceFiles/window/notifications_manager_default.h

@@ -82,7 +82,7 @@ private:
 
 	void moveWidgets();
 	void changeNotificationHeight(Notification *widget, int newHeight);
-	void settingsChanged(const Notify::ChangeType &change);
+	void settingsChanged(Notify::ChangeType change);
 
 	bool hasReplyingNotification() const;
 

Telegram/gyp/Telegram.gyp

@@ -209,6 +209,7 @@
       '<(src_loc)/core/single_timer.cpp',
       '<(src_loc)/core/single_timer.h',
       '<(src_loc)/core/stl_subset.h',
+      '<(src_loc)/core/type_traits.h',
       '<(src_loc)/core/utils.cpp',
       '<(src_loc)/core/utils.h',
       '<(src_loc)/core/vector_of_moveable.h',