Beta version 2.5.4: Fix build on Linux.

- Implement new audio module code for calls and voice chats.
- Allow retracting votes from polls in comments to channel posts.
- Show small voice chat button for empty voice chats.
- Fix media viewer updating when screen resolution is changed.

.github/workflows/copyright_year_updater.yml

@@ -0,0 +1,16 @@
+name: Copyright year updater.
+
+on:
+  repository_dispatch:
+    types: ["Restart copyright_year_updater workflow."]
+  schedule:
+    # At 03:00 on January 1.
+    - cron: "0 3 1 1 *"
+
+jobs:
+  Copyright-year:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: desktop-app/action_code_updater@master
+        with:
+          type: "license-year"

.github/workflows/mac.yml

@@ -102,6 +102,8 @@ jobs:
           cd Libraries/macos
           echo "LibrariesPath=`pwd`" >> $GITHUB_ENV
 
+          curl -o tg_owt-version.json https://api.github.com/repos/desktop-app/tg_owt/git/refs/heads/master
+
       - name: Patches.
         run: |
           echo "Find necessary commit from doc."
@@ -475,7 +477,7 @@ jobs:
         uses: actions/cache@v2
         with:
           path: ${{ env.LibrariesPath }}/tg_owt
-          key: ${{ runner.OS }}-webrtc-${{ env.CACHE_KEY }}
+          key: ${{ runner.OS }}-webrtc-${{ env.CACHE_KEY }}-${{ hashFiles('**/tg_owt-version.json') }}
       - name: WebRTC.
         if: steps.cache-webrtc.outputs.cache-hit != 'true'
         run: |

.github/workflows/user_agent_updater.yml

@@ -5,152 +5,14 @@ on:
     types: ["Restart user_agent_updater workflow."]
   schedule:
     # At 00:00 on day-of-month 1.
-    - cron: '0 0 1 * *'
+    - cron: "0 0 1 * *"
   pull_request_target:
     types: [closed]
 
 jobs:
   User-agent:
     runs-on: ubuntu-latest
-
-    env:
-      codeFile: "Telegram/SourceFiles/mtproto/details/mtproto_domain_resolver.cpp"
-      headBranchPrefix: "chrome_"
-      baseBranch: "dev"
-      isPull: "0"
-
     steps:
-      - name: Set env.
-        if: startsWith(github.event_name, 'pull_request')
-        run: |
-          echo "isPull=1" >> $GITHUB_ENV
-
-      - name: Clone.
-        uses: actions/checkout@v2
-
-      - name: Set up git.
-        run: |
-          token=${{ secrets.TOKEN_FOR_MASTER_UPDATER }}
-          if [ -z "${token}" ]; then
-              echo "Token is unset. Nothing to do."
-              exit 1
-          fi
-
-          url=https://x-access-token:$token@github.com/$GITHUB_REPOSITORY
-
-          git config --global user.email "action@github.com"
-          git config --global user.name "GitHub Action"
-
-          git remote set-url origin $url
-
-      - name: Delete branch.
-        env:
-          ref: ${{ github.event.pull_request.head.ref }}
-        if: |
-          env.isPull == '1'
-            && github.event.action == 'closed'
-            && startsWith(env.ref, env.headBranchPrefix)
-        run: |
-          git push origin --delete $ref
-
-      - name: Write a new version of Google Chrome to the user-agent for DNS.
-        if: env.isPull == '0'
-        shell: python
-        run: |
-          import subprocess, os, re;
-
-          regExpVersion = "[0-9]+.[0-9]+.[0-9]+.[0-9]+";
-          chrome = "Chrome/";
-
-          def newVersion():
-            output = subprocess.check_output(["google-chrome", "--version"]);
-            version = re.search(regExpVersion, output);
-            if not version:
-              print("Can't find a Chrome version.");
-              exit();
-            return version.group(0);
-
-          newChromeVersion = newVersion();
-          print(newChromeVersion);
-
-          def setEnv(value):
-            open(os.environ['GITHUB_ENV'], "a").write(value);
-
-          def writeUserAgent():
-            p = os.environ['codeFile'];
-            w = open(p, "r");
-            content = w.read();
-            w.close();
-
-            regExpChrome = chrome + regExpVersion;
-
-            version = re.search(regExpChrome, content);
-            if not version:
-              print("Can't find an user-agent in the code.");
-              exit();
-            content = re.sub(regExpChrome, chrome + newChromeVersion, content);
-
-            w = open(p, "w");
-            w.write(content);
-
-            setEnv("ChromeVersion=" + newChromeVersion);
-
-          writeUserAgent();
-
-      - name: Push to a new branch.
-        if: env.isPull == '0' && env.ChromeVersion != ''
-        run: |
-          git diff > git_diff.txt
-          if [[ ! -s git_diff.txt ]]; then
-            echo "Nothing to commit."
-            exit 0
-          fi
-
-          git checkout -b $headBranchPrefix$ChromeVersion
-          git add $codeFile
-          git commit -m "Update User-Agent for DNS to Chrome $ChromeVersion."
-
-          git push origin $headBranchPrefix$ChromeVersion
-          echo "Done!"
-
-      - name: Close previous pull requests.
-        if: env.isPull == '0' && env.ChromeVersion != ''
-        uses: actions/github-script@0.4.0
+      - uses: desktop-app/action_code_updater@master
         with:
-          github-token: ${{ secrets.GITHUB_TOKEN }}
-          script: |
-            const common = {
-              owner: context.repo.owner,
-              repo: context.repo.repo,
-            };
-
-            github.pulls.list(common).then(response => {
-              response.data.forEach((item, _) => {
-                if (item.head.ref.startsWith(process.env.headBranchPrefix)) {
-                  console.log(`Close ${item.title} #${item.number}.`);
-                  github.pulls.update({
-                    pull_number: item.number,
-                    state: "closed",
-                    ...common
-                  });
-                }
-              });
-            });
-
-      - name: Create a new pull request.
-        if: env.isPull == '0' && env.ChromeVersion != ''
-        uses: actions/github-script@0.4.0
-        with:
-          github-token: ${{ secrets.GITHUB_TOKEN }}
-          script: |
-            const version = process.env.ChromeVersion;
-            const title = `Update User-Agent for DNS to Chrome ${version}.`;
-
-            github.pulls.create({
-              title: title,
-              body: "",
-              head: `${process.env.headBranchPrefix}${version}`,
-              base: process.env.baseBranch,
-              owner: context.repo.owner,
-              repo: context.repo.repo,
-            });
+          type: "user-agent"

.github/workflows/win.yml

@@ -103,6 +103,7 @@ jobs:
       - name: Generate cache key.
         shell: bash
         run: |
+          curl -o $LibrariesPath/tg_owt-version.json https://api.github.com/repos/desktop-app/tg_owt/git/refs/heads/master
           echo $MANUAL_CACHING >> CACHE_KEY.txt
           if [ "$AUTO_CACHING" == "1" ]; then
             thisFile=$REPO_NAME/.github/workflows/win.yml
@@ -359,7 +360,7 @@ jobs:
         uses: actions/cache@v2
         with:
           path: ${{ env.LibrariesPath }}/tg_owt
-          key: ${{ runner.OS }}-webrtc-${{ env.CACHE_KEY }}
+          key: ${{ runner.OS }}-webrtc-${{ env.CACHE_KEY }}-${{ hashFiles('**/tg_owt-version.json') }}
       - name: WebRTC.
         if: steps.cache-webrtc.outputs.cache-hit != 'true'
         run: |

LEGAL

@@ -1,7 +1,7 @@
 This file is part of Telegram Desktop,
 the official desktop application for the Telegram messaging service.
 
-Copyright (c) 2014-2020 The Telegram Desktop Authors.
+Copyright (c) 2014-2021 The Telegram Desktop Authors.
 
 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

README.md

@@ -17,13 +17,17 @@ The latest version is available for
 
 * [Windows 7 and above](https://telegram.org/dl/desktop/win) ([portable](https://telegram.org/dl/desktop/win_portable))
 * [macOS 10.12 and above](https://telegram.org/dl/desktop/mac)
-* [OS X 10.10 and 10.11](https://telegram.org/dl/desktop/osx)
-* [Linux static build for 64 bit](https://telegram.org/dl/desktop/linux) ([32 bit](https://telegram.org/dl/desktop/linux32))
+* [Linux static build for 64 bit](https://telegram.org/dl/desktop/linux)
 * [Snap](https://snapcraft.io/telegram-desktop)
 * [Flatpak](https://flathub.org/apps/details/org.telegram.desktop)
 
 ## Old system versions
 
+Version **2.4.4** was the last that supports older systems
+
+* [OS X 10.10 and 10.11](https://updates.tdesktop.com/tosx/tsetup-osx.2.4.4.dmg)
+* [Linux static build for 32 bit](https://updates.tdesktop.com/tlinux32/tsetup32.2.4.4.tar.xz)
+
 Version **1.8.15** was the last that supports older systems
 
 * [Windows XP and Vista](https://updates.tdesktop.com/tsetup/tsetup.1.8.15.exe) ([portable](https://updates.tdesktop.com/tsetup/tportable.1.8.15.zip))

Telegram/CMakeLists.txt

@@ -84,6 +84,13 @@ if (LINUX)
         )
     endif()
 
+    if (NOT DESKTOP_APP_DISABLE_WAYLAND_INTEGRATION)
+        target_link_libraries(Telegram
+        PRIVATE
+            desktop-app::external_kwayland
+        )
+    endif()
+
     if (DESKTOP_APP_USE_PACKAGED
         AND NOT DESKTOP_APP_DISABLE_WAYLAND_INTEGRATION
         AND Qt5WaylandClient_VERSION VERSION_LESS 5.13.0)
@@ -812,6 +819,8 @@ PRIVATE
     platform/linux/linux_desktop_environment.h
     platform/linux/linux_gdk_helper.cpp
     platform/linux/linux_gdk_helper.h
+    platform/linux/linux_gsd_media_keys.cpp
+    platform/linux/linux_gsd_media_keys.h
     platform/linux/linux_libs.cpp
     platform/linux/linux_libs.h
     platform/linux/linux_wayland_integration.cpp
@@ -1101,6 +1110,19 @@ if (NOT LINUX)
     )
 endif()
 
+if (LINUX AND DESKTOP_APP_DISABLE_DBUS_INTEGRATION)
+    remove_target_sources(Telegram ${src_loc}
+        platform/linux/linux_gsd_media_keys.cpp
+        platform/linux/linux_gsd_media_keys.h
+        platform/linux/notifications_manager_linux.cpp
+    )
+
+    nice_target_sources(Telegram ${src_loc}
+    PRIVATE
+        platform/linux/notifications_manager_linux_dummy.cpp
+    )
+endif()
+
 if (LINUX AND DESKTOP_APP_DISABLE_WAYLAND_INTEGRATION)
     remove_target_sources(Telegram ${src_loc} platform/linux/linux_wayland_integration.cpp)
     nice_target_sources(Telegram ${src_loc} PRIVATE platform/linux/linux_wayland_integration_dummy.cpp)

Telegram/Resources/uwp/AppX/AppxManifest.xml

@@ -9,7 +9,7 @@
   <Identity Name="TelegramMessengerLLP.TelegramDesktop"
     ProcessorArchitecture="ARCHITECTURE"
     Publisher="CN=536BC709-8EE1-4478-AF22-F0F0F26FF64A"
-    Version="2.5.2.0" />
+    Version="2.5.4.0" />
   <Properties>
     <DisplayName>Telegram Desktop</DisplayName>
     <PublisherDisplayName>Telegram FZ-LLC</PublisherDisplayName>

Telegram/Resources/winrc/Telegram.rc

@@ -44,8 +44,8 @@ IDI_ICON1               ICON                    "..\\art\\icon256.ico"
 //
 
 VS_VERSION_INFO VERSIONINFO
- FILEVERSION 2,5,2,0
- PRODUCTVERSION 2,5,2,0
+ FILEVERSION 2,5,4,0
+ PRODUCTVERSION 2,5,4,0
  FILEFLAGSMASK 0x3fL
 #ifdef _DEBUG
  FILEFLAGS 0x1L
@@ -62,10 +62,10 @@ BEGIN
         BEGIN
             VALUE "CompanyName", "Telegram FZ-LLC"
             VALUE "FileDescription", "Telegram Desktop"
-            VALUE "FileVersion", "2.5.2.0"
-            VALUE "LegalCopyright", "Copyright (C) 2014-2020"
+            VALUE "FileVersion", "2.5.4.0"
+            VALUE "LegalCopyright", "Copyright (C) 2014-2021"
             VALUE "ProductName", "Telegram Desktop"
-            VALUE "ProductVersion", "2.5.2.0"
+            VALUE "ProductVersion", "2.5.4.0"
         END
     END
     BLOCK "VarFileInfo"

Telegram/Resources/winrc/Updater.rc

@@ -35,8 +35,8 @@ LANGUAGE LANG_ENGLISH, SUBLANG_ENGLISH_US
 //
 
 VS_VERSION_INFO VERSIONINFO
- FILEVERSION 2,5,2,0
- PRODUCTVERSION 2,5,2,0
+ FILEVERSION 2,5,4,0
+ PRODUCTVERSION 2,5,4,0
  FILEFLAGSMASK 0x3fL
 #ifdef _DEBUG
  FILEFLAGS 0x1L
@@ -53,10 +53,10 @@ BEGIN
         BEGIN
             VALUE "CompanyName", "Telegram FZ-LLC"
             VALUE "FileDescription", "Telegram Desktop Updater"
-            VALUE "FileVersion", "2.5.2.0"
-            VALUE "LegalCopyright", "Copyright (C) 2014-2020"
+            VALUE "FileVersion", "2.5.4.0"
+            VALUE "LegalCopyright", "Copyright (C) 2014-2021"
             VALUE "ProductName", "Telegram Desktop"
-            VALUE "ProductVersion", "2.5.2.0"
+            VALUE "ProductVersion", "2.5.4.0"
         END
     END
     BLOCK "VarFileInfo"

Telegram/SourceFiles/boxes/peers/edit_participants_box.cpp

@@ -358,7 +358,7 @@ bool ParticipantsAdditionalData::canRemoveUser(
 	if (canRestrictUser(user)) {
 		return true;
 	} else if (const auto chat = _peer->asChat()) {
-		return chat->invitedByMe.contains(user);
+		return !user->isSelf() && chat->invitedByMe.contains(user);
 	}
 	return false;
 }
@@ -1212,6 +1212,9 @@ void ParticipantsBoxController::rebuildChatAdmins(
 		return true;
 	}();
 	if (same) {
+		if (!_allLoaded && !delegate()->peerListFullRowsCount()) {
+			chatListReady();
+		}
 		return;
 	}
 

Telegram/SourceFiles/calls/calls_call.cpp

@@ -25,6 +25,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "calls/calls_panel.h"
 #include "webrtc/webrtc_video_track.h"
 #include "webrtc/webrtc_media_devices.h"
+#include "webrtc/webrtc_create_adm.h"
 #include "data/data_user.h"
 #include "data/data_session.h"
 #include "facades.h"
@@ -779,6 +780,8 @@ void Call::createAndStartController(const MTPDphoneCall &call) {
 				sendSignalingData(bytes);
 			});
 		},
+		.createAudioDeviceModule = Webrtc::AudioDeviceModuleCreator(
+			settings.callAudioBackend()),
 	};
 	if (Logs::DebugEnabled()) {
 		auto callLogFolder = cWorkingDir() + qsl("DebugLogs");

Telegram/SourceFiles/calls/calls_group_call.cpp

@@ -25,6 +25,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "data/data_session.h"
 #include "base/global_shortcuts.h"
 #include "webrtc/webrtc_media_devices.h"
+#include "webrtc/webrtc_create_adm.h"
 
 #include <tgcalls/group/GroupInstanceImpl.h>
 
@@ -581,6 +582,8 @@ void GroupCall::createAndStartController() {
 		},
 		.initialInputDeviceId = _audioInputId.toStdString(),
 		.initialOutputDeviceId = _audioOutputId.toStdString(),
+		.createAudioDeviceModule = Webrtc::AudioDeviceModuleCreator(
+			settings.callAudioBackend()),
 	};
 	if (Logs::DebugEnabled()) {
 		auto callLogFolder = cWorkingDir() + qsl("DebugLogs");

Telegram/SourceFiles/calls/calls_group_members.cpp

@@ -273,6 +273,8 @@ private:
 	rpl::event_stream<MuteRequest> _toggleMuteRequests;
 	rpl::event_stream<not_null<UserData*>> _kickMemberRequests;
 	rpl::variable<int> _fullCount = 1;
+	rpl::variable<int> _fullCountMin = 0;
+	rpl::variable<int> _fullCountMax = std::numeric_limits<int>::max();
 
 	not_null<QWidget*> _menuParent;
 	base::unique_qptr<Ui::PopupMenu> _menu;
@@ -682,9 +684,12 @@ void MembersController::subscribeToChanges(not_null<Data::GroupCall*> real) {
 	_realCallRawValue = real;
 	_realId = real->id();
 
-	_fullCount = real->fullCountValue(
-	) | rpl::map([](int value) {
-		return std::max(value, 1);
+	_fullCount = rpl::combine(
+		real->fullCountValue(),
+		_fullCountMin.value(),
+		_fullCountMax.value()
+	) | rpl::map([](int value, int min, int max) {
+		return std::max(std::clamp(value, min, max), 1);
 	});
 
 	real->participantsSliceAdded(
@@ -741,10 +746,14 @@ void MembersController::appendInvitedUsers() {
 void MembersController::updateRow(
 		const std::optional<Data::GroupCall::Participant> &was,
 		const Data::GroupCall::Participant &now) {
+	auto countChange = 0;
 	if (const auto row = findRow(now.user)) {
 		if (now.speaking && (!was || !was->speaking)) {
 			checkSpeakingRowPosition(row);
 		}
+		if (row->state() == Row::State::Invited) {
+			countChange = 1;
+		}
 		updateRow(row, &now);
 	} else if (auto row = createRow(now)) {
 		if (row->speaking()) {
@@ -767,6 +776,14 @@ void MembersController::updateRow(
 			}
 		}
 		delegate()->peerListRefreshRows();
+		countChange = 1;
+	}
+	if (countChange) {
+		const auto fullCountMin = _fullCountMin.current() + countChange;
+		if (_fullCountMax.current() < fullCountMin) {
+			_fullCountMax = fullCountMin;
+		}
+		_fullCountMin = fullCountMin;
 	}
 }
 
@@ -879,10 +896,11 @@ void MembersController::prepare() {
 	setSearchNoResultsText(tr::lng_blocked_list_not_found(tr::now));
 
 	const auto call = _call.get();
-	if (const auto real = _peer->groupCall();
-		real && call && real->id() == call->id()) {
+	if (const auto real = _peer->groupCall()
+		; real && call && real->id() == call->id()) {
 		prepareRows(real);
 	} else if (auto row = createSelfRow()) {
+		_fullCountMin = (row->state() == Row::State::Invited) ? 0 : 1;
 		delegate()->peerListAppendRow(std::move(row));
 		delegate()->peerListRefreshRows();
 	}
@@ -898,6 +916,7 @@ void MembersController::prepareRows(not_null<Data::GroupCall*> real) {
 	auto foundSelf = false;
 	auto changed = false;
 	const auto &participants = real->participants();
+	auto fullCountMin = 0;
 	auto count = delegate()->peerListFullRowsCount();
 	for (auto i = 0; i != count;) {
 		auto row = delegate()->peerListRowAt(i);
@@ -912,6 +931,7 @@ void MembersController::prepareRows(not_null<Data::GroupCall*> real) {
 			not_null{ user },
 			&Data::GroupCall::Participant::user);
 		if (contains) {
+			++fullCountMin;
 			++i;
 		} else {
 			changed = true;
@@ -927,18 +947,29 @@ void MembersController::prepareRows(not_null<Data::GroupCall*> real) {
 			&Data::GroupCall::Participant::user);
 		auto row = (i != end(participants)) ? createRow(*i) : createSelfRow();
 		if (row) {
+			if (row->state() != Row::State::Invited) {
+				++fullCountMin;
+			}
 			changed = true;
 			delegate()->peerListAppendRow(std::move(row));
 		}
 	}
 	for (const auto &participant : participants) {
 		if (auto row = createRow(participant)) {
+			++fullCountMin;
 			changed = true;
 			delegate()->peerListAppendRow(std::move(row));
 		}
 	}
 	if (changed) {
 		delegate()->peerListRefreshRows();
+		if (_fullCountMax.current() < fullCountMin) {
+			_fullCountMax = fullCountMin;
+		}
+		_fullCountMin = fullCountMin;
+		if (real->participantsLoaded()) {
+			_fullCountMax = fullCountMin;
+		}
 	}
 }
 

Telegram/SourceFiles/calls/calls_group_settings.cpp

@@ -480,6 +480,7 @@ void GroupCallSettingsBox(
 		// Means we finished showing the box.
 		crl::on_main(box, [=] {
 			state->micTester = std::make_unique<Webrtc::AudioInputTester>(
+				Core::App().settings().callAudioBackend(),
 				Core::App().settings().callInputDeviceId());
 			state->levelUpdateTimer.callEach(kMicTestUpdateInterval);
 		});

Telegram/SourceFiles/core/changelogs.cpp

@@ -62,7 +62,7 @@ std::map<int, const char*> BetaLogs() {
 		"- Fix sticker pack opening.\n"
 
 		"- Fix group status display.\n"
-		
+
 		"- Fix group members display.\n"
 	},
 	{
@@ -82,7 +82,23 @@ std::map<int, const char*> BetaLogs() {
 		"- Fix possible crash in connecting to voice chats.\n"
 
 		"- Use different audio module code on Windows in calls.\n"
-	}
+	},
+	{
+		2005003,
+		"- Allow using mouse buttons in Push-to-Talk shortcut.\n"
+
+		"- Fix blurred thumbnails in Shared Links section.\n"
+	},
+	{
+		2005004,
+		"- Implement new audio module code for calls and voice chats.\n"
+
+		"- Allow retracting votes from polls in comments to channel posts.\n"
+
+		"- Show small voice chat button for empty voice chats.\n"
+
+		"- Fix media viewer updating when screen resolution is changed.\n"
+	},
 	};
 };
 

Telegram/SourceFiles/core/core_settings.cpp

@@ -13,12 +13,14 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "window/themes/window_theme.h"
 #include "window/section_widget.h"
 #include "base/platform/base_platform_info.h"
+#include "webrtc/webrtc_create_adm.h"
 #include "facades.h"
 
 namespace Core {
 
 Settings::Settings()
-: _sendSubmitWay(Ui::InputSubmitSettings::Enter)
+: _callAudioBackend(Webrtc::Backend::OpenAL)
+, _sendSubmitWay(Ui::InputSubmitSettings::Enter)
 , _floatPlayerColumn(Window::Column::Second)
 , _floatPlayerCorner(RectPart::TopRight)
 , _dialogsWidthRatio(DefaultDialogsWidthRatio()) {
@@ -112,7 +114,8 @@ QByteArray Settings::serialize() const {
 			<< qint32(_ipRevealWarning ? 1 : 0)
 			<< qint32(_groupCallPushToTalk ? 1 : 0)
 			<< _groupCallPushToTalkShortcut
-			<< qint64(_groupCallPushToTalkDelay);
+			<< qint64(_groupCallPushToTalkDelay)
+			<< qint32(_callAudioBackend);
 	}
 	return result;
 }
@@ -183,6 +186,7 @@ void Settings::addFromSerialized(const QByteArray &serialized) {
 	qint32 groupCallPushToTalk = _groupCallPushToTalk ? 1 : 0;
 	QByteArray groupCallPushToTalkShortcut = _groupCallPushToTalkShortcut;
 	qint64 groupCallPushToTalkDelay = _groupCallPushToTalkDelay;
+	qint32 callAudioBackend = static_cast<qint32>(_callAudioBackend);
 
 	stream >> themesAccentColors;
 	if (!stream.atEnd()) {
@@ -275,6 +279,9 @@ void Settings::addFromSerialized(const QByteArray &serialized) {
 			>> groupCallPushToTalkShortcut
 			>> groupCallPushToTalkDelay;
 	}
+	if (!stream.atEnd()) {
+		stream >> callAudioBackend;
+	}
 	if (stream.status() != QDataStream::Ok) {
 		LOG(("App Error: "
 			"Bad data for Core::Settings::constructFromSerialized()"));
@@ -369,6 +376,12 @@ void Settings::addFromSerialized(const QByteArray &serialized) {
 	_groupCallPushToTalk = (groupCallPushToTalk == 1);
 	_groupCallPushToTalkShortcut = groupCallPushToTalkShortcut;
 	_groupCallPushToTalkDelay = groupCallPushToTalkDelay;
+	auto uncheckedBackend = static_cast<Webrtc::Backend>(callAudioBackend);
+	switch (uncheckedBackend) {
+	case Webrtc::Backend::OpenAL:
+	case Webrtc::Backend::ADM:
+	case Webrtc::Backend::ADM2: _callAudioBackend = uncheckedBackend; break;
+	}
 }
 
 bool Settings::chatWide() const {

Telegram/SourceFiles/core/core_settings.h

@@ -21,6 +21,10 @@ namespace Window {
 enum class Column;
 } // namespace Window
 
+namespace Webrtc {
+enum class Backend;
+} // namespace Webrtc
+
 namespace Core {
 
 class Settings final {
@@ -217,6 +221,12 @@ public:
 	void setCallAudioDuckingEnabled(bool value) {
 		_callAudioDuckingEnabled = value;
 	}
+	[[nodiscard]] Webrtc::Backend callAudioBackend() const {
+		return _callAudioBackend;
+	}
+	void setCallAudioBackend(Webrtc::Backend backend) {
+		_callAudioBackend = backend;
+	}
 	[[nodiscard]] bool groupCallPushToTalk() const {
 		return _groupCallPushToTalk;
 	}
@@ -531,13 +541,14 @@ private:
 	int _callOutputVolume = 100;
 	int _callInputVolume = 100;
 	bool _callAudioDuckingEnabled = true;
+	Webrtc::Backend _callAudioBackend = Webrtc::Backend();
 	bool _groupCallPushToTalk = false;
 	QByteArray _groupCallPushToTalkShortcut;
 	crl::time _groupCallPushToTalkDelay = 20;
 	Window::Theme::AccentColors _themesAccentColors;
 	bool _lastSeenWarningSeen = false;
-	Ui::SendFilesWay _sendFilesWay;
-	Ui::InputSubmitSettings _sendSubmitWay;
+	Ui::SendFilesWay _sendFilesWay = Ui::SendFilesWay();
+	Ui::InputSubmitSettings _sendSubmitWay = Ui::InputSubmitSettings();
 	base::flat_map<QString, QString> _soundOverrides;
 	bool _exeLaunchWarning = true;
 	bool _ipRevealWarning = true;
@@ -553,8 +564,8 @@ private:
 	rpl::variable<bool> _autoDownloadDictionaries = true;
 	rpl::variable<bool> _mainMenuAccountsShown = true;
 	bool _tabbedSelectorSectionEnabled = false; // per-window
-	Window::Column _floatPlayerColumn; // per-window
-	RectPart _floatPlayerCorner; // per-window
+	Window::Column _floatPlayerColumn = Window::Column(); // per-window
+	RectPart _floatPlayerCorner = RectPart(); // per-window
 	bool _thirdSectionInfoEnabled = true; // per-window
 	rpl::event_stream<bool> _thirdSectionInfoEnabledValue; // per-window
 	int _thirdSectionExtendedBy = -1; // per-window

Telegram/SourceFiles/core/launcher.cpp

@@ -270,14 +270,10 @@ std::unique_ptr<Launcher> Launcher::Create(int argc, char *argv[]) {
 
 Launcher::Launcher(
 	int argc,
-	char *argv[],
-	const QString &deviceModel,
-	const QString &systemVersion)
+	char *argv[])
 : _argc(argc)
 , _argv(argv)
-, _baseIntegration(_argc, _argv)
-, _deviceModel(deviceModel)
-, _systemVersion(systemVersion) {
+, _baseIntegration(_argc, _argv) {
 	base::Integration::Set(&_baseIntegration);
 }
 
@@ -328,6 +324,23 @@ int Launcher::exec() {
 	// Must be started before Platform is started.
 	Logs::start(this);
 
+	if (Logs::DebugEnabled()) {
+		const auto openalLogPath = QDir::toNativeSeparators(
+			cWorkingDir() + qsl("DebugLogs/last_openal_log.txt"));
+
+		qputenv("ALSOFT_LOGLEVEL", "3");
+
+#ifdef Q_OS_WIN
+		_wputenv_s(
+			L"ALSOFT_LOGFILE",
+			openalLogPath.toStdWString().c_str());
+#else // Q_OS_WIN
+		qputenv(
+			"ALSOFT_LOGFILE",
+			QFile::encodeName(openalLogPath));
+#endif // !Q_OS_WIN
+	}
+
 	// Must be started before Sandbox is created.
 	Platform::start();
 	Ui::DisableCustomScaling();
@@ -419,14 +432,6 @@ void Launcher::prepareSettings() {
 	processArguments();
 }
 
-QString Launcher::deviceModel() const {
-	return _deviceModel;
-}
-
-QString Launcher::systemVersion() const {
-	return _systemVersion;
-}
-
 uint64 Launcher::installationTag() const {
 	return InstallationTag;
 }

Telegram/SourceFiles/core/launcher.h

@@ -15,9 +15,7 @@ class Launcher {
 public:
 	Launcher(
 		int argc,
-		char *argv[],
-		const QString &deviceModel,
-		const QString &systemVersion);
+		char *argv[]);
 
 	static std::unique_ptr<Launcher> Create(int argc, char *argv[]);
 
@@ -26,8 +24,6 @@ public:
 	QString argumentsString() const;
 	bool customWorkingDir() const;
 
-	QString deviceModel() const;
-	QString systemVersion() const;
 	uint64 installationTag() const;
 
 	bool checkPortableVersionFolder();
@@ -67,9 +63,6 @@ private:
 	QStringList _arguments;
 	BaseIntegration _baseIntegration;
 
-	const QString _deviceModel;
-	const QString _systemVersion;
-
 	bool _customWorkingDir = false;
 
 };

Telegram/SourceFiles/core/version.h

@@ -22,7 +22,7 @@ constexpr auto AppId = "{53F49750-6209-4FBF-9CA8-7A333C87D1ED}"_cs;
 constexpr auto AppNameOld = "Telegram Win (Unofficial)"_cs;
 constexpr auto AppName = "Telegram Desktop"_cs;
 constexpr auto AppFile = "Telegram"_cs;
-constexpr auto AppVersion = 2005002;
-constexpr auto AppVersionStr = "2.5.2";
+constexpr auto AppVersion = 2005004;
+constexpr auto AppVersionStr = "2.5.4";
 constexpr auto AppBetaVersion = true;
 constexpr auto AppAlphaVersion = TDESKTOP_ALPHA_VERSION;

Telegram/SourceFiles/history/admin_log/history_admin_log_inner.cpp

@@ -556,7 +556,7 @@ bool InnerWidget::elementUnderCursor(
 }
 
 crl::time InnerWidget::elementHighlightTime(
-		not_null<const HistoryView::Element*> element) {
+		not_null<const HistoryItem*> item) {
 	return crl::time(0);
 }
 

Telegram/SourceFiles/history/admin_log/history_admin_log_inner.h

@@ -97,7 +97,7 @@ public:
 	bool elementUnderCursor(
 		not_null<const HistoryView::Element*> view) override;
 	crl::time elementHighlightTime(
-		not_null<const HistoryView::Element*> element) override;
+		not_null<const HistoryItem*> item) override;
 	bool elementInSelectionMode() override;
 	bool elementIntersectsRange(
 		not_null<const HistoryView::Element*> view,

Telegram/SourceFiles/history/admin_log/history_admin_log_item.cpp

@@ -838,7 +838,7 @@ void GenerateItems(
 		data.vparticipant().match([&](const MTPDgroupCallParticipant &data) {
 			const auto user = history->owner().user(data.vuser_id().v);
 			const auto userLink = user->createOpenLink();
-			const auto userLinkText = textcmdLink(1, user->name);
+			const auto userLinkText = textcmdLink(2, user->name);
 			auto text = tr::lng_admin_log_muted_participant(
 				tr::now,
 				lt_from,
@@ -862,7 +862,7 @@ void GenerateItems(
 		data.vparticipant().match([&](const MTPDgroupCallParticipant &data) {
 			const auto user = history->owner().user(data.vuser_id().v);
 			const auto userLink = user->createOpenLink();
-			const auto userLinkText = textcmdLink(1, user->name);
+			const auto userLinkText = textcmdLink(2, user->name);
 			auto text = tr::lng_admin_log_unmuted_participant(
 				tr::now,
 				lt_from,

Telegram/SourceFiles/history/history_inner_widget.cpp

@@ -1751,18 +1751,11 @@ void HistoryInner::showContextMenu(QContextMenuEvent *e, bool showFromTouch) {
 				}
 				if (const auto media = item->media()) {
 					if (const auto poll = media->poll()) {
-						if (!poll->closed()) {
-							if (poll->voted() && !poll->quiz()) {
-								_menu->addAction(tr::lng_polls_retract(tr::now), [=] {
-									session->api().sendPollVotes(itemId, {});
-								});
-							}
-							if (item->canStopPoll()) {
-								_menu->addAction(tr::lng_polls_stop(tr::now), [=] {
-									HistoryView::StopPoll(session, itemId);
-								});
-							}
-						}
+						HistoryView::AddPollActions(
+							_menu,
+							poll,
+							item,
+							HistoryView::Context::History);
 					} else if (const auto contact = media->sharedContact()) {
 						const auto phone = contact->phoneNumber;
 						_menu->addAction(tr::lng_profile_copy_phone(tr::now), [=] {
@@ -2520,9 +2513,9 @@ void HistoryInner::elementStartStickerLoop(
 	_animatedStickersPlayed.emplace(view->data());
 }
 
-crl::time HistoryInner::elementHighlightTime(not_null<const Element*> view) {
-	const auto fullAnimMs = _controller->content()->highlightStartTime(
-		view->data());
+crl::time HistoryInner::elementHighlightTime(
+		not_null<const HistoryItem*> item) {
+	const auto fullAnimMs = _controller->content()->highlightStartTime(item);
 	if (fullAnimMs > 0) {
 		const auto now = crl::now();
 		if (fullAnimMs < now) {
@@ -3421,8 +3414,8 @@ not_null<HistoryView::ElementDelegate*> HistoryInner::ElementDelegate() {
 			return (App::hoveredItem() == view);
 		}
 		crl::time elementHighlightTime(
-				not_null<const Element*> view) override {
-			return Instance ? Instance->elementHighlightTime(view) : 0;
+				not_null<const HistoryItem*> item) override {
+			return Instance ? Instance->elementHighlightTime(item) : 0;
 		}
 		bool elementInSelectionMode() override {
 			return Instance ? Instance->inSelectionMode() : false;

Telegram/SourceFiles/history/history_inner_widget.h

@@ -84,7 +84,7 @@ public:
 		int till) const;
 	void elementStartStickerLoop(not_null<const Element*> view);
 	[[nodiscard]] crl::time elementHighlightTime(
-		not_null<const Element*> view);
+		not_null<const HistoryItem*> item);
 	void elementShowPollResults(
 		not_null<PollData*> poll,
 		FullMsgId context);

Telegram/SourceFiles/history/history_widget.cpp

@@ -1045,11 +1045,6 @@ void HistoryWidget::scrollToAnimationCallback(
 
 void HistoryWidget::enqueueMessageHighlight(
 		not_null<HistoryView::Element*> view) {
-	if (const auto group = session().data().groups().find(view->data())) {
-		if (const auto leader = group->items.front()->mainView()) {
-			view = leader;
-		}
-	}
 	auto enqueueMessageId = [this](MsgId universalId) {
 		if (_highlightQueue.empty() && !_highlightTimer.isActive()) {
 			highlightMessage(universalId);
@@ -1096,7 +1091,7 @@ void HistoryWidget::checkNextHighlight() {
 
 void HistoryWidget::updateHighlightedMessage() {
 	const auto item = getItemFromHistoryOrMigrated(_highlightedMessageId);
-	const auto view = item ? item->mainView() : nullptr;
+	auto view = item ? item->mainView() : nullptr;
 	if (!view) {
 		return stopMessageHighlight();
 	}
@@ -1105,6 +1100,11 @@ void HistoryWidget::updateHighlightedMessage() {
 		return stopMessageHighlight();
 	}
 
+	if (const auto group = session().data().groups().find(view->data())) {
+		if (const auto leader = group->items.front()->mainView()) {
+			view = leader;
+		}
+	}
 	session().data().requestViewRepaint(view);
 }
 
@@ -1661,6 +1661,7 @@ void HistoryWidget::applyDraft(FieldHistoryAction fieldHistoryAction) {
 		_editMsgId = 0;
 		_replyToId = readyToForward() ? 0 : _history->localDraft()->msgId;
 	}
+	updateCmdStartShown();
 	updateControlsVisibility();
 	updateControlsGeometry();
 	refreshTopBarActiveChat();
@@ -2228,11 +2229,7 @@ void HistoryWidget::updateControlsVisibility() {
 				_botCommandStart->hide();
 			} else {
 				_botKeyboardShow->hide();
-				if (_cmdStartShown) {
-					_botCommandStart->show();
-				} else {
-					_botCommandStart->hide();
-				}
+				_botCommandStart->setVisible(_cmdStartShown);
 			}
 		}
 		_attachToggle->show();
@@ -3738,7 +3735,7 @@ void HistoryWidget::updateSendButtonType() {
 bool HistoryWidget::updateCmdStartShown() {
 	bool cmdStartShown = false;
 	if (_history && _peer && ((_peer->isChat() && _peer->asChat()->botStatus > 0) || (_peer->isMegagroup() && _peer->asChannel()->mgInfo->botStatus > 0) || (_peer->isUser() && _peer->asUser()->isBot()))) {
-		if (!isBotStart() && !isBlocked() && !_keyboard->hasMarkup() && !_keyboard->forceReply()) {
+		if (!isBotStart() && !isBlocked() && !_keyboard->hasMarkup() && !_keyboard->forceReply() && !_editMsgId) {
 			if (!HasSendText(_field)) {
 				cmdStartShown = true;
 			}
@@ -4081,8 +4078,8 @@ void HistoryWidget::checkFieldAutocomplete() {
 			&& cRecentInlineBots().isEmpty()) {
 			session().local().readRecentHashtagsAndBots();
 		} else if (autocomplete.query[0] == '/'
-			&& _peer->isUser()
-			&& !_peer->asUser()->isBot()) {
+			&& ((_peer->isUser() && !_peer->asUser()->isBot())
+				|| _editMsgId)) {
 			return;
 		}
 	}
@@ -4845,7 +4842,7 @@ void HistoryWidget::updateBotKeyboard(History *h, bool force) {
 			_tabbedSelectorToggle->show();
 			_botKeyboardHide->hide();
 			_botKeyboardShow->hide();
-			_botCommandStart->show();
+			_botCommandStart->setVisible(!_editMsgId);
 		}
 		_field->setMaxHeight(computeMaxFieldHeight());
 		_kbShown = false;
@@ -5652,7 +5649,7 @@ void HistoryWidget::editMessage(FullMsgId itemId) {
 }
 
 void HistoryWidget::editMessage(not_null<HistoryItem*> item) {
-	if (_voiceRecordBar->isListenState()) {
+	if (_voiceRecordBar->isActive()) {
 		Ui::show(Box<InformBox>(tr::lng_edit_caption_voice(tr::now)));
 		return;
 	}

Telegram/SourceFiles/history/view/controls/history_view_compose_controls.cpp

@@ -1814,7 +1814,7 @@ void ComposeControls::editMessage(not_null<HistoryItem*> item) {
 	Expects(_history != nullptr);
 	Expects(draftKeyCurrent() != Data::DraftKey::None());
 
-	if (_voiceRecordBar && _voiceRecordBar->isListenState()) {
+	if (_voiceRecordBar->isActive()) {
 		Ui::show(Box<InformBox>(tr::lng_edit_caption_voice(tr::now)));
 		return;
 	}

Telegram/SourceFiles/history/view/controls/history_view_voice_record_bar.cpp

@@ -924,12 +924,9 @@ CancelButton::CancelButton(not_null<Ui::RpWidget*> parent, int height)
 
 void CancelButton::init() {
 	_showProgress.value(
-	) | rpl::start_with_next([=](float64 progress) {
-		const auto hasProgress = (progress > 0.);
-		if (isHidden() == !hasProgress) {
-			setVisible(hasProgress);
-		}
-		update();
+	) | rpl::map(rpl::mappers::_1 > 0.) | rpl::distinct_until_changed(
+	) | rpl::start_with_next([=](bool hasProgress) {
+		setVisible(hasProgress);
 	}, lifetime());
 
 	paintRequest(
@@ -960,6 +957,7 @@ QPoint CancelButton::prepareRippleStartPosition() const {
 
 void CancelButton::requestPaintProgress(float64 progress) {
 	_showProgress = progress;
+	update();
 }
 
 VoiceRecordBar::VoiceRecordBar(

Telegram/SourceFiles/history/view/history_view_context_menu.cpp

@@ -868,6 +868,9 @@ base::unique_qptr<Ui::PopupMenu> FillContextMenu(
 	const auto document = linkDocument
 		? linkDocument->document().get()
 		: nullptr;
+	const auto poll = item
+		? (item->media() ? item->media()->poll() : nullptr)
+		: nullptr;
 	const auto hasSelection = !request.selectedItems.empty()
 		|| !request.selectedText.empty();
 
@@ -897,6 +900,8 @@ base::unique_qptr<Ui::PopupMenu> FillContextMenu(
 	//		});
 	//		AddToggleGroupingAction(result, linkPeer->peer());
 	//	}
+	} else if (poll) {
+		AddPollActions(result, poll, item, list->elementContext());
 	} else if (!request.overSelection && view && !hasSelection) {
 		const auto owner = &view->data()->history()->owner();
 		const auto media = view->media();
@@ -979,4 +984,30 @@ void StopPoll(not_null<Main::Session*> session, FullMsgId itemId) {
 		stop));
 }
 
+void AddPollActions(
+		not_null<Ui::PopupMenu*> menu,
+		not_null<PollData*> poll,
+		not_null<HistoryItem*> item,
+		Context context) {
+	if ((context != Context::History)
+		&& (context != Context::Replies)
+		&& (context != Context::Pinned)) {
+		return;
+	}
+	if (poll->closed()) {
+		return;
+	}
+	const auto itemId = item->fullId();
+	if (poll->voted() && !poll->quiz()) {
+		menu->addAction(tr::lng_polls_retract(tr::now), [=] {
+			poll->session().api().sendPollVotes(itemId, {});
+		});
+	}
+	if (item->canStopPoll()) {
+		menu->addAction(tr::lng_polls_stop(tr::now), [=] {
+			StopPoll(&poll->session(), itemId);
+		});
+	}
+}
+
 } // namespace HistoryView

Telegram/SourceFiles/history/view/history_view_context_menu.h

@@ -49,5 +49,10 @@ void CopyPostLink(
 	FullMsgId itemId,
 	Context context);
 void StopPoll(not_null<Main::Session*> session, FullMsgId itemId);
+void AddPollActions(
+	not_null<Ui::PopupMenu*> menu,
+	not_null<PollData*> poll,
+	not_null<HistoryItem*> item,
+	Context context);
 
 } // namespace

Telegram/SourceFiles/history/view/history_view_element.cpp

@@ -79,7 +79,7 @@ bool SimpleElementDelegate::elementUnderCursor(
 }
 
 crl::time SimpleElementDelegate::elementHighlightTime(
-	not_null<const Element*> element) {
+		not_null<const HistoryItem*> item) {
 	return crl::time(0);
 }
 
@@ -280,29 +280,44 @@ void Element::refreshDataIdHook() {
 void Element::paintHighlight(
 		Painter &p,
 		int geometryHeight) const {
-	const auto animms = delegate()->elementHighlightTime(this);
-	if (!animms
-		|| animms >= st::activeFadeInDuration + st::activeFadeOutDuration) {
-		return;
-	}
-
 	const auto top = marginTop();
 	const auto bottom = marginBottom();
 	const auto fill = qMin(top, bottom);
 	const auto skiptop = top - fill;
 	const auto fillheight = fill + geometryHeight + fill;
 
-	const auto dt = (animms > st::activeFadeInDuration)
+	paintCustomHighlight(p, skiptop, fillheight, data());
+}
+
+float64 Element::highlightOpacity(not_null<const HistoryItem*> item) const {
+	const auto animms = delegate()->elementHighlightTime(item);
+	if (!animms
+		|| animms >= st::activeFadeInDuration + st::activeFadeOutDuration) {
+		return 0.;
+	}
+
+	return (animms > st::activeFadeInDuration)
 		? (1. - (animms - st::activeFadeInDuration)
 			/ float64(st::activeFadeOutDuration))
 		: (animms / float64(st::activeFadeInDuration));
+}
+
+void Element::paintCustomHighlight(
+		Painter &p,
+		int y,
+		int height,
+		not_null<const HistoryItem*> item) const {
+	const auto opacity = highlightOpacity(item);
+	if (opacity == 0.) {
+		return;
+	}
 	const auto o = p.opacity();
-	p.setOpacity(o * dt);
+	p.setOpacity(o * opacity);
 	p.fillRect(
 		0,
-		skiptop,
+		y,
 		width(),
-		fillheight,
+		height,
 		st::defaultTextPalette.selectOverlay);
 	p.setOpacity(o);
 }

Telegram/SourceFiles/history/view/history_view_element.h

@@ -51,7 +51,7 @@ public:
 		Element *replacing = nullptr) = 0;
 	virtual bool elementUnderCursor(not_null<const Element*> view) = 0;
 	virtual crl::time elementHighlightTime(
-		not_null<const Element*> element) = 0;
+		not_null<const HistoryItem*> item) = 0;
 	virtual bool elementInSelectionMode() = 0;
 	virtual bool elementIntersectsRange(
 		not_null<const Element*> view,
@@ -87,7 +87,7 @@ public:
 		Element *replacing = nullptr) override;
 	bool elementUnderCursor(not_null<const Element*> view) override;
 	crl::time elementHighlightTime(
-		not_null<const Element*> element) override;
+		not_null<const HistoryItem*> item) override;
 	bool elementInSelectionMode() override;
 	bool elementIntersectsRange(
 		not_null<const Element*> view,
@@ -301,6 +301,13 @@ public:
 	virtual void unloadHeavyPart();
 	void checkHeavyPart();
 
+	void paintCustomHighlight(
+		Painter &p,
+		int y,
+		int height,
+		not_null<const HistoryItem*> item) const;
+	float64 highlightOpacity(not_null<const HistoryItem*> item) const;
+
 	// Legacy blocks structure.
 	HistoryBlock *block();
 	const HistoryBlock *block() const;

Telegram/SourceFiles/history/view/history_view_group_call_tracker.cpp

@@ -321,6 +321,7 @@ rpl::producer<Ui::GroupCallBarContent> GroupCallTracker::ContentByCall(
 		call->fullCountValue(
 		) | rpl::start_with_next([=](int count) {
 			state->current.count = count;
+			state->current.shown = (count > 0);
 			consumer.put_next_copy(state->current);
 		}, lifetime);
 

Telegram/SourceFiles/history/view/history_view_list_widget.cpp

@@ -482,7 +482,7 @@ void ListWidget::highlightMessage(FullMsgId itemId) {
 			_highlightedMessageId = itemId;
 			_highlightTimer.callEach(AnimationTimerDelta);
 
-			repaintItem(view);
+			repaintHighlightedItem(view);
 		}
 	}
 }
@@ -496,10 +496,24 @@ void ListWidget::showAroundPosition(
 	refreshViewer();
 }
 
+void ListWidget::repaintHighlightedItem(not_null<const Element*> view) {
+	if (view->isHiddenByGroup()) {
+		if (const auto group = session().data().groups().find(view->data())) {
+			if (const auto leader = viewForItem(group->items.front())) {
+				if (!leader->isHiddenByGroup()) {
+					repaintItem(leader);
+					return;
+				}
+			}
+		}
+	}
+	repaintItem(view);
+}
+
 void ListWidget::updateHighlightedMessage() {
 	if (const auto item = session().data().message(_highlightedMessageId)) {
 		if (const auto view = viewForItem(item)) {
-			repaintItem(view);
+			repaintHighlightedItem(view);
 			auto duration = st::activeFadeInDuration + st::activeFadeOutDuration;
 			if (crl::now() - _highlightStart <= duration) {
 				return;
@@ -1244,8 +1258,8 @@ bool ListWidget::elementUnderCursor(
 }
 
 crl::time ListWidget::elementHighlightTime(
-		not_null<const HistoryView::Element*> element) {
-	if (element->data()->fullId() == _highlightedMessageId) {
+		not_null<const HistoryItem*> item) {
+	if (item->fullId() == _highlightedMessageId) {
 		if (_highlightTimer.isActive()) {
 			return crl::now() - _highlightStart;
 		}

Telegram/SourceFiles/history/view/history_view_list_widget.h

@@ -221,7 +221,7 @@ public:
 		Element *replacing = nullptr) override;
 	bool elementUnderCursor(not_null<const Element*> view) override;
 	crl::time elementHighlightTime(
-		not_null<const Element*> element) override;
+		not_null<const HistoryItem*> item) override;
 	bool elementInSelectionMode() override;
 	bool elementIntersectsRange(
 		not_null<const Element*> view,
@@ -340,6 +340,7 @@ private:
 	int itemTop(not_null<const Element*> view) const;
 	void repaintItem(FullMsgId itemId);
 	void repaintItem(const Element *view);
+	void repaintHighlightedItem(not_null<const Element*> view);
 	void resizeItem(not_null<Element*> view);
 	void refreshItem(not_null<const Element*> view);
 	void itemRemoved(not_null<const HistoryItem*> item);

Telegram/SourceFiles/history/view/history_view_message.cpp

@@ -570,7 +570,40 @@ void Message::draw(
 		return;
 	}
 
-	paintHighlight(p, g.height());
+	auto entry = logEntryOriginal();
+	auto mediaDisplayed = media && media->isDisplayed();
+
+	// Entry page is always a bubble bottom.
+	auto mediaOnBottom = (mediaDisplayed && media->isBubbleBottom()) || (entry/* && entry->isBubbleBottom()*/);
+	auto mediaOnTop = (mediaDisplayed && media->isBubbleTop()) || (entry && entry->isBubbleTop());
+
+	auto mediaSelectionIntervals = (!selected && mediaDisplayed)
+		? media->getBubbleSelectionIntervals(selection)
+		: std::vector<BubbleSelectionInterval>();
+	auto localMediaTop = 0;
+	const auto customHighlight = mediaDisplayed && media->customHighlight();
+	if (!mediaSelectionIntervals.empty() || customHighlight) {
+		auto localMediaBottom = g.top() + g.height();
+		if (data()->repliesAreComments() || data()->externalReply()) {
+			localMediaBottom -= st::historyCommentsButtonHeight;
+		}
+		if (!mediaOnBottom) {
+			localMediaBottom -= st::msgPadding.bottom();
+		}
+		if (entry) {
+			localMediaBottom -= entry->height();
+		}
+		localMediaTop = localMediaBottom - media->height();
+		for (auto &[top, height] : mediaSelectionIntervals) {
+			top += localMediaTop;
+		}
+	}
+
+	if (customHighlight) {
+		media->drawHighlight(p, localMediaTop);
+	} else {
+		paintHighlight(p, g.height());
+	}
 
 	const auto roll = media ? media->bubbleRoll() : Media::BubbleRoll();
 	if (roll) {
@@ -602,34 +635,6 @@ void Message::draw(
 			fromNameUpdated(g.width());
 		}
 
-		auto entry = logEntryOriginal();
-		auto mediaDisplayed = media && media->isDisplayed();
-
-		// Entry page is always a bubble bottom.
-		auto mediaOnBottom = (mediaDisplayed && media->isBubbleBottom()) || (entry/* && entry->isBubbleBottom()*/);
-		auto mediaOnTop = (mediaDisplayed && media->isBubbleTop()) || (entry && entry->isBubbleTop());
-
-
-		auto mediaSelectionIntervals = (!selected && mediaDisplayed)
-			? media->getBubbleSelectionIntervals(selection)
-			: std::vector<BubbleSelectionInterval>();
-		if (!mediaSelectionIntervals.empty()) {
-			auto localMediaBottom = g.top() + g.height();
-			if (data()->repliesAreComments() || data()->externalReply()) {
-				localMediaBottom -= st::historyCommentsButtonHeight;
-			}
-			if (!mediaOnBottom) {
-				localMediaBottom -= st::msgPadding.bottom();
-			}
-			if (entry) {
-				localMediaBottom -= entry->height();
-			}
-			const auto localMediaTop = localMediaBottom - media->height();
-			for (auto &[top, height] : mediaSelectionIntervals) {
-				top += localMediaTop;
-			}
-		}
-
 		auto skipTail = isAttachedToNext()
 			|| (media && media->skipBubbleTail())
 			|| (keyboard != nullptr)

Telegram/SourceFiles/history/view/history_view_top_bar_widget.cpp

@@ -525,12 +525,36 @@ void TopBarWidget::setActiveChat(
 		_activeChat = activeChat;
 		return;
 	}
+	const auto peerChanged = (_activeChat.key.history()
+		!= activeChat.key.history());
+
 	_activeChat = activeChat;
 	_sendAction = sendAction;
 	_titlePeerText.clear();
 	_back->clearState();
 	update();
 
+	if (peerChanged) {
+		_activeChatLifetime.destroy();
+		if (const auto history = _activeChat.key.history()) {
+			session().changes().peerFlagsValue(
+				history->peer,
+				Data::PeerUpdate::Flag::GroupCall
+			) | rpl::map([=] {
+				return history->peer->groupCall();
+			}) | rpl::distinct_until_changed(
+			) | rpl::map([](Data::GroupCall *call) {
+				return call ? call->fullCountValue() : rpl::single(-1);
+			}) | rpl::flatten_latest(
+			) | rpl::map([](int count) {
+				return (count == 0);
+			}) | rpl::distinct_until_changed(
+			) | rpl::start_with_next([=] {
+				updateControlsVisibility();
+				updateControlsGeometry();
+			}, _activeChatLifetime);
+		}
+	}
 	updateUnreadBadge();
 	refreshInfoButton();
 	if (_menu) {
@@ -722,7 +746,12 @@ void TopBarWidget::updateControlsVisibility() {
 	_call->setVisible(historyMode && callsEnabled);
 	const auto groupCallsEnabled = [&] {
 		if (const auto peer = _activeChat.key.peer()) {
-			return peer->canManageGroupCall();
+			if (peer->canManageGroupCall()) {
+				return true;
+			} else if (const auto call = peer->groupCall()) {
+				return (call->fullCount() == 0);
+			}
+			return false;
 		}
 		return false;
 	}();

Telegram/SourceFiles/history/view/history_view_top_bar_widget.h

@@ -130,6 +130,7 @@ private:
 	const not_null<Window::SessionController*> _controller;
 	ActiveChat _activeChat;
 	QString _customTitleText;
+	rpl::lifetime _activeChatLifetime;
 
 	int _selectedCount = 0;
 	bool _canDelete = false;

Telegram/SourceFiles/history/view/media/history_view_document.cpp

@@ -951,6 +951,7 @@ void Document::drawGrouped(
 		const QRect &geometry,
 		RectParts sides,
 		RectParts corners,
+		float64 highlightOpacity,
 		not_null<uint64*> cacheKey,
 		not_null<QPixmap*> cache) const {
 	p.translate(geometry.topLeft());

Telegram/SourceFiles/history/view/media/history_view_document.h

@@ -72,6 +72,7 @@ public:
 		const QRect &geometry,
 		RectParts sides,
 		RectParts corners,
+		float64 highlightOpacity,
 		not_null<uint64*> cacheKey,
 		not_null<QPixmap*> cache) const override;
 	TextState getStateGrouped(

Telegram/SourceFiles/history/view/media/history_view_gif.cpp

@@ -901,6 +901,7 @@ void Gif::drawGrouped(
 		const QRect &geometry,
 		RectParts sides,
 		RectParts corners,
+		float64 highlightOpacity,
 		not_null<uint64*> cacheKey,
 		not_null<QPixmap*> cache) const {
 	ensureDataMediaCreated();
@@ -989,8 +990,16 @@ void Gif::drawGrouped(
 		p.drawPixmap(geometry, *cache);
 	}
 
-	if (selected) {
+	const auto overlayOpacity = selected
+		? (1. - highlightOpacity)
+		: highlightOpacity;
+	if (overlayOpacity > 0.) {
+		p.setOpacity(overlayOpacity);
 		Ui::FillComplexOverlayRect(p, geometry, roundRadius, corners);
+		if (!selected) {
+			Ui::FillComplexOverlayRect(p, geometry, roundRadius, corners);
+		}
+		p.setOpacity(1.);
 	}
 
 	if (radial

Telegram/SourceFiles/history/view/media/history_view_gif.h

@@ -79,6 +79,7 @@ public:
 		const QRect &geometry,
 		RectParts sides,
 		RectParts corners,
+		float64 highlightOpacity,
 		not_null<uint64*> cacheKey,
 		not_null<QPixmap*> cache) const override;
 	TextState getStateGrouped(

Telegram/SourceFiles/history/view/media/history_view_media.h

@@ -84,6 +84,8 @@ public:
 	}
 	virtual void refreshParentId(not_null<HistoryItem*> realParent) {
 	}
+	virtual void drawHighlight(Painter &p, int top) const {
+	}
 	virtual void draw(
 		Painter &p,
 		const QRect &r,
@@ -177,6 +179,7 @@ public:
 			const QRect &geometry,
 			RectParts sides,
 			RectParts corners,
+			float64 highlightOpacity,
 			not_null<uint64*> cacheKey,
 			not_null<QPixmap*> cache) const {
 		Unexpected("Grouping method call.");
@@ -274,6 +277,9 @@ public:
 		const QRect &bubble,
 		crl::time ms) const {
 	}
+	[[nodiscard]] virtual bool customHighlight() const {
+		return false;
+	}
 
 	virtual bool hasHeavyPart() const {
 		return false;

Telegram/SourceFiles/history/view/media/history_view_media_grouped.cpp

@@ -268,6 +268,18 @@ QMargins GroupedMedia::groupedPadding() const {
 		(normal.bottom() - grouped.bottom()) + addToBottom);
 }
 
+void GroupedMedia::drawHighlight(Painter &p, int top) const {
+	if (_mode != Mode::Column) {
+		return;
+	}
+	const auto skip = top + groupedPadding().top();
+	for (auto i = 0, count = int(_parts.size()); i != count; ++i) {
+		const auto &part = _parts[i];
+		const auto rect = part.geometry.translated(0, skip);
+		_parent->paintCustomHighlight(p, rect.y(), rect.height(), part.item);
+	}
+}
+
 void GroupedMedia::draw(
 		Painter &p,
 		const QRect &clip,
@@ -290,6 +302,9 @@ void GroupedMedia::draw(
 		if (textSelection) {
 			selection = part.content->skipSelection(selection);
 		}
+		const auto highlightOpacity = (_mode == Mode::Grid)
+			? _parent->highlightOpacity(part.item)
+			: 0.;
 		part.content->drawGrouped(
 			p,
 			clip,
@@ -298,6 +313,7 @@ void GroupedMedia::draw(
 			part.geometry.translated(0, groupPadding.top()),
 			part.sides,
 			cornersFromSides(part.sides),
+			highlightOpacity,
 			&part.cacheKey,
 			&part.cache);
 	}

Telegram/SourceFiles/history/view/media/history_view_media_grouped.h

@@ -31,6 +31,7 @@ public:
 
 	void refreshParentId(not_null<HistoryItem*> realParent) override;
 
+	void drawHighlight(Painter &p, int top) const override;
 	void draw(
 		Painter &p,
 		const QRect &clip,
@@ -87,6 +88,9 @@ public:
 	bool allowsFastShare() const override {
 		return true;
 	}
+	bool customHighlight() const override {
+		return true;
+	}
 
 	void stopAnimation() override;
 	void checkAnimation() override;

Telegram/SourceFiles/history/view/media/history_view_photo.cpp

@@ -485,6 +485,7 @@ void Photo::drawGrouped(
 		const QRect &geometry,
 		RectParts sides,
 		RectParts corners,
+		float64 highlightOpacity,
 		not_null<uint64*> cacheKey,
 		not_null<QPixmap*> cache) const {
 	ensureDataMediaCreated();
@@ -509,9 +510,18 @@ void Photo::drawGrouped(
 //		App::roundShadow(p, 0, 0, paintw, painth, selected ? st::msgInShadowSelected : st::msgInShadow, selected ? InSelectedShadowCorners : InShadowCorners);
 	}
 	p.drawPixmap(geometry.topLeft(), *cache);
-	if (selected) {
+
+	const auto overlayOpacity = selected
+		? (1. - highlightOpacity)
+		: highlightOpacity;
+	if (overlayOpacity > 0.) {
+		p.setOpacity(overlayOpacity);
 		const auto roundRadius = ImageRoundRadius::Large;
 		Ui::FillComplexOverlayRect(p, geometry, roundRadius, corners);
+		if (!selected) {
+			Ui::FillComplexOverlayRect(p, geometry, roundRadius, corners);
+		}
+		p.setOpacity(1.);
 	}
 
 	const auto displayState = radial

Telegram/SourceFiles/history/view/media/history_view_photo.h

@@ -68,6 +68,7 @@ public:
 		const QRect &geometry,
 		RectParts sides,
 		RectParts corners,
+		float64 highlightOpacity,
 		not_null<uint64*> cacheKey,
 		not_null<QPixmap*> cache) const override;
 	TextState getStateGrouped(

Telegram/SourceFiles/history/view/media/history_view_poll.cpp

@@ -765,7 +765,9 @@ void Poll::draw(Painter &p, const QRect &r, TextSelection selection, crl::time m
 			: nullptr;
 		if (animation) {
 			animation->percent.update(progress, anim::linear);
-			animation->filling.update(progress, anim::linear);
+			animation->filling.update(
+				progress,
+				showVotes() ? anim::easeOutCirc : anim::linear);
 			animation->opacity.update(progress, anim::linear);
 		}
 		const auto height = paintAnswer(

Telegram/SourceFiles/info/profile/info_profile_values.cpp

@@ -247,7 +247,7 @@ rpl::producer<int> AdminsCountValue(not_null<PeerData*> peer) {
 		) | rpl::map([=] {
 			return chat->participants.empty()
 				? 0
-				: int(chat->admins.size() + 1); // + creator
+				: int(chat->admins.size() + (chat->creator ? 1 : 0));
 		});
 	} else if (const auto channel = peer->asChannel()) {
 		return peer->session().changes().peerFlagsValue(

Telegram/SourceFiles/main/main_account.cpp

@@ -7,8 +7,8 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 */
 #include "main/main_account.h"
 
+#include "base/platform/base_platform_info.h"
 #include "core/application.h"
-#include "core/launcher.h"
 #include "core/shortcuts.h"
 #include "storage/storage_account.h"
 #include "storage/storage_domain.h" // Storage::StartResult.
@@ -386,8 +386,8 @@ void Account::startMtp(std::unique_ptr<MTP::Config> config) {
 
 	auto fields = base::take(_mtpFields);
 	fields.config = std::move(config);
-	fields.deviceModel = Core::App().launcher()->deviceModel();
-	fields.systemVersion = Core::App().launcher()->systemVersion();
+	fields.deviceModel = Platform::DeviceModelPretty();
+	fields.systemVersion = Platform::SystemVersionPretty();
 	_mtp = std::make_unique<MTP::Instance>(
 		MTP::Instance::Mode::Normal,
 		std::move(fields));
@@ -534,8 +534,8 @@ void Account::destroyMtpKeys(MTP::AuthKeysList &&keys) {
 	destroyFields.mainDcId = MTP::Instance::Fields::kNoneMainDc;
 	destroyFields.config = std::make_unique<MTP::Config>(_mtp->config());
 	destroyFields.keys = std::move(keys);
-	destroyFields.deviceModel = Core::App().launcher()->deviceModel();
-	destroyFields.systemVersion = Core::App().launcher()->systemVersion();
+	destroyFields.deviceModel = Platform::DeviceModelPretty();
+	destroyFields.systemVersion = Platform::SystemVersionPretty();
 	_mtpForKeysDestroy = std::make_unique<MTP::Instance>(
 		MTP::Instance::Mode::KeysDestroyer,
 		std::move(destroyFields));

Telegram/SourceFiles/media/view/media_view_overlay_widget.cpp

@@ -360,6 +360,7 @@ OverlayWidget::OverlayWidget()
 		setWindowFlags(Qt::FramelessWindowHint);
 	}
 	updateGeometry();
+	updateControlsGeometry();
 	setAttribute(Qt::WA_NoSystemBackground, true);
 	setAttribute(Qt::WA_TranslucentBackground, true);
 	setMouseTracking(true);
@@ -446,17 +447,16 @@ void OverlayWidget::moveToScreen() {
 		: nullptr;
 	const auto activeWindowScreen = widgetScreen(window);
 	const auto myScreen = widgetScreen(this);
-	// Wayland doesn't support positioning, but Qt emits screenChanged anyway
-	// and geometry of the widget become broken
-	if (activeWindowScreen
-		&& myScreen != activeWindowScreen
-		&& !Platform::IsWayland()) {
+	if (activeWindowScreen && myScreen != activeWindowScreen) {
 		windowHandle()->setScreen(activeWindowScreen);
 	}
 	updateGeometry();
 }
 
 void OverlayWidget::updateGeometry() {
+	if (!Platform::IsMac()) {
+		return;
+	}
 	const auto screen = windowHandle() && windowHandle()->screen()
 		? windowHandle()->screen()
 		: QApplication::primaryScreen();
@@ -465,7 +465,13 @@ void OverlayWidget::updateGeometry() {
 		return;
 	}
 	setGeometry(available);
+}
 
+void OverlayWidget::resizeEvent(QResizeEvent *e) {
+	updateControlsGeometry();
+}
+
+void OverlayWidget::updateControlsGeometry() {
 	auto navSkip = 2 * st::mediaviewControlMargin + st::mediaviewControlSize;
 	_closeNav = myrtlrect(width() - st::mediaviewControlMargin - st::mediaviewControlSize, st::mediaviewControlMargin, st::mediaviewControlSize, st::mediaviewControlSize);
 	_closeNavIcon = style::centerrect(_closeNav, st::mediaviewClose);
@@ -478,6 +484,7 @@ void OverlayWidget::updateGeometry() {
 	_photoRadialRect = QRect(QPoint((width() - st::radialSize.width()) / 2, (height() - st::radialSize.height()) / 2), st::radialSize);
 
 	resizeContentByScreenSize();
+	updateControls();
 	update();
 }
 
@@ -2443,7 +2450,9 @@ bool OverlayWidget::initStreaming(bool continueStreaming) {
 void OverlayWidget::startStreamingPlayer() {
 	Expects(_streamed != nullptr);
 
-	if (_streamed->instance.player().playing()) {
+	if (!_streamed->instance.player().paused()
+		&& !_streamed->instance.player().finished()
+		&& !_streamed->instance.player().failed()) {
 		if (!_streamed->withSound) {
 			return;
 		}

Telegram/SourceFiles/media/view/media_view_overlay_widget.h

@@ -55,10 +55,14 @@ class Pip;
 #define USE_OPENGL_OVERLAY_WIDGET
 #endif // Q_OS_MAC && !OS_MAC_OLD
 
+struct OverlayParentTraits : Ui::RpWidgetDefaultTraits {
+	static constexpr bool kSetZeroGeometry = false;
+};
+
 #ifdef USE_OPENGL_OVERLAY_WIDGET
-using OverlayParent = Ui::RpWidgetWrap<QOpenGLWidget>;
+using OverlayParent = Ui::RpWidgetWrap<QOpenGLWidget, OverlayParentTraits>;
 #else // USE_OPENGL_OVERLAY_WIDGET
-using OverlayParent = Ui::RpWidget;
+using OverlayParent = Ui::RpWidgetWrap<QWidget, OverlayParentTraits>;
 #endif // USE_OPENGL_OVERLAY_WIDGET
 
 class OverlayWidget final
@@ -166,6 +170,7 @@ private:
 	};
 
 	void paintEvent(QPaintEvent *e) override;
+	void resizeEvent(QResizeEvent *e) override;
 
 	void keyPressEvent(QKeyEvent *e) override;
 	void wheelEvent(QWheelEvent *e) override;
@@ -270,6 +275,7 @@ private:
 	void updateDocSize();
 	void updateControls();
 	void updateActions();
+	void updateControlsGeometry();
 	void resizeCenteredControls();
 	void resizeContentByScreenSize();
 

Telegram/SourceFiles/mtproto/details/mtproto_domain_resolver.cpp

@@ -65,7 +65,7 @@ QByteArray DnsUserAgent() {
 	static const auto kResult = QByteArray(
 		"Mozilla/5.0 (Windows NT 10.0; Win64; x64) "
 		"AppleWebKit/537.36 (KHTML, like Gecko) "
-		"Chrome/86.0.4240.198 Safari/537.36");
+		"Chrome/87.0.4280.88 Safari/537.36");
 	return kResult;
 }
 

Telegram/SourceFiles/overview/overview_layout.cpp

@@ -1479,9 +1479,8 @@ Link::Link(
 	int32 tw = 0, th = 0;
 	if (_page && _page->photo) {
 		const auto photo = _page->photo;
-		if (photo->inlineThumbnailBytes().isEmpty()
-			&& (photo->hasExact(Data::PhotoSize::Small)
-				|| photo->hasExact(Data::PhotoSize::Thumbnail))) {
+		if (photo->hasExact(Data::PhotoSize::Small)
+			|| photo->hasExact(Data::PhotoSize::Thumbnail)) {
 			photo->load(Data::PhotoSize::Small, parent->fullId());
 		}
 		tw = style::ConvertScale(photo->width());
@@ -1623,7 +1622,7 @@ void Link::paint(Painter &p, const QRect &clip, TextSelection selection, const P
 }
 
 void Link::validateThumbnail() {
-	if (!_thumbnail.isNull()) {
+	if (!_thumbnail.isNull() && !_thumbnailBlurred) {
 		return;
 	}
 	if (_page && _page->photo) {
@@ -1631,12 +1630,16 @@ void Link::validateThumbnail() {
 		ensurePhotoMediaCreated();
 		if (const auto thumbnail = _photoMedia->image(PhotoSize::Thumbnail)) {
 			_thumbnail = thumbnail->pixSingle(_pixw, _pixh, st::linksPhotoSize, st::linksPhotoSize, ImageRoundRadius::Small);
+			_thumbnailBlurred = false;
 		} else if (const auto large = _photoMedia->image(PhotoSize::Large)) {
 			_thumbnail = large->pixSingle(_pixw, _pixh, st::linksPhotoSize, st::linksPhotoSize, ImageRoundRadius::Small);
+			_thumbnailBlurred = false;
 		} else if (const auto small = _photoMedia->image(PhotoSize::Small)) {
 			_thumbnail = small->pixSingle(_pixw, _pixh, st::linksPhotoSize, st::linksPhotoSize, ImageRoundRadius::Small);
+			_thumbnailBlurred = false;
 		} else if (const auto blurred = _photoMedia->thumbnailInline()) {
 			_thumbnail = blurred->pixBlurredSingle(_pixw, _pixh, st::linksPhotoSize, st::linksPhotoSize, ImageRoundRadius::Small);
+			return;
 		} else {
 			return;
 		}
@@ -1644,14 +1647,20 @@ void Link::validateThumbnail() {
 		delegate()->unregisterHeavyItem(this);
 	} else if (_page && _page->document && _page->document->hasThumbnail()) {
 		ensureDocumentMediaCreated();
+		const auto roundRadius = _page->document->isVideoMessage()
+			? ImageRoundRadius::Ellipse
+			: ImageRoundRadius::Small;
 		if (const auto thumbnail = _documentMedia->thumbnail()) {
-			auto roundRadius = _page->document->isVideoMessage()
-				? ImageRoundRadius::Ellipse
-				: ImageRoundRadius::Small;
 			_thumbnail = thumbnail->pixSingle(_pixw, _pixh, st::linksPhotoSize, st::linksPhotoSize, roundRadius);
-			_documentMedia = nullptr;
-			delegate()->unregisterHeavyItem(this);
+			_thumbnailBlurred = false;
+		} else if (const auto blurred = _documentMedia->thumbnailInline()) {
+			_thumbnail = blurred->pixBlurredSingle(_pixw, _pixh, st::linksPhotoSize, st::linksPhotoSize, roundRadius);
+			return;
+		} else {
+			return;
 		}
+		_documentMedia = nullptr;
+		delegate()->unregisterHeavyItem(this);
 	} else {
 		const auto size = QSize(st::linksPhotoSize, st::linksPhotoSize);
 		_thumbnail = QPixmap(size * cIntRetinaFactor());
@@ -1683,6 +1692,7 @@ void Link::validateThumbnail() {
 				_letter,
 				style::al_center);
 		}
+		_thumbnailBlurred = false;
 	}
 }
 

Telegram/SourceFiles/overview/overview_layout.h

@@ -368,6 +368,7 @@ private:
 	int _pixh = 0;
 	Ui::Text::String _text = { st::msgMinWidth };
 	QPixmap _thumbnail;
+	bool _thumbnailBlurred = true;
 
 	struct LinkEntry {
 		LinkEntry() : width(0) {

Telegram/SourceFiles/platform/linux/file_utilities_linux.cpp

@@ -45,45 +45,95 @@ bool ShowOpenWithSupported() {
 		&& (Libs::gtk_app_chooser_dialog_new != nullptr)
 		&& (Libs::gtk_app_chooser_get_app_info != nullptr)
 		&& (Libs::gtk_app_chooser_get_type != nullptr)
-		&& (Libs::gtk_widget_get_type != nullptr)
 		&& (Libs::gtk_widget_get_window != nullptr)
 		&& (Libs::gtk_widget_realize != nullptr)
 		&& (Libs::gtk_widget_show != nullptr)
 		&& (Libs::gtk_widget_destroy != nullptr);
 }
 
-void HandleAppChooserResponse(
-		GtkDialog *dialog,
-		int responseId,
-		GFile *file) {
+class OpenWithDialog : public QWindow {
+public:
+	OpenWithDialog(const QString &filepath);
+	~OpenWithDialog();
+
+	bool exec();
+
+private:
+	static void handleResponse(OpenWithDialog *dialog, int responseId);
+
+	GFile *_gfileInstance = nullptr;
+	GtkWidget *_gtkWidget = nullptr;
+	QEventLoop _loop;
+	std::optional<bool> _result = std::nullopt;
+};
+
+OpenWithDialog::OpenWithDialog(const QString &filepath)
+: _gfileInstance(g_file_new_for_path(filepath.toUtf8()))
+, _gtkWidget(Libs::gtk_app_chooser_dialog_new(
+		nullptr,
+		GTK_DIALOG_MODAL,
+		_gfileInstance)) {
+	g_signal_connect_swapped(
+		_gtkWidget,
+		"response",
+		G_CALLBACK(handleResponse),
+		this);
+}
+
+OpenWithDialog::~OpenWithDialog() {
+	Libs::gtk_widget_destroy(_gtkWidget);
+	g_object_unref(_gfileInstance);
+}
+
+bool OpenWithDialog::exec() {
+	Libs::gtk_widget_realize(_gtkWidget);
+
+	if (const auto activeWindow = Core::App().activeWindow()) {
+		Platform::internal::XSetTransientForHint(
+			Libs::gtk_widget_get_window(_gtkWidget),
+			activeWindow->widget().get()->windowHandle()->winId());
+	}
+
+	QGuiApplicationPrivate::showModalWindow(this);
+	Libs::gtk_widget_show(_gtkWidget);
+
+	if (!_result.has_value()) {
+		_loop.exec();
+	}
+
+	QGuiApplicationPrivate::hideModalWindow(this);
+	return *_result;
+}
+
+void OpenWithDialog::handleResponse(OpenWithDialog *dialog, int responseId) {
 	GAppInfo *chosenAppInfo = nullptr;
+	dialog->_result = true;
 
 	switch (responseId) {
 	case GTK_RESPONSE_OK:
 		chosenAppInfo = Libs::gtk_app_chooser_get_app_info(
-			Libs::gtk_app_chooser_cast(dialog));
+			Libs::gtk_app_chooser_cast(dialog->_gtkWidget));
 
 		if (chosenAppInfo) {
 			GList *uris = nullptr;
-			uris = g_list_prepend(uris, g_file_get_uri(file));
+			uris = g_list_prepend(uris, g_file_get_uri(dialog->_gfileInstance));
 			g_app_info_launch_uris(chosenAppInfo, uris, nullptr, nullptr);
 			g_list_free(uris);
 			g_object_unref(chosenAppInfo);
 		}
 
-		g_object_unref(file);
-		Libs::gtk_widget_destroy(Libs::gtk_widget_cast(dialog));
 		break;
 
 	case GTK_RESPONSE_CANCEL:
 	case GTK_RESPONSE_DELETE_EVENT:
-		g_object_unref(file);
-		Libs::gtk_widget_destroy(Libs::gtk_widget_cast(dialog));
 		break;
 
 	default:
+		dialog->_result = false;
 		break;
 	}
+
+	dialog->_loop.quit();
 }
 #endif // !TDESKTOP_DISABLE_GTK_INTEGRATION
 
@@ -141,30 +191,7 @@ bool UnsafeShowOpenWith(const QString &filepath) {
 	}
 
 	const auto absolutePath = QFileInfo(filepath).absoluteFilePath();
-	auto gfileInstance = g_file_new_for_path(absolutePath.toUtf8());
-
-	auto appChooserDialog = Libs::gtk_app_chooser_dialog_new(
-		nullptr,
-		GTK_DIALOG_MODAL,
-		gfileInstance);
-
-	g_signal_connect(
-		appChooserDialog,
-		"response",
-		G_CALLBACK(HandleAppChooserResponse),
-		gfileInstance);
-
-	Libs::gtk_widget_realize(appChooserDialog);
-
-	if (const auto activeWindow = Core::App().activeWindow()) {
-		Platform::internal::XSetTransientForHint(
-			Libs::gtk_widget_get_window(appChooserDialog),
-			activeWindow->widget().get()->windowHandle()->winId());
-	}
-
-	Libs::gtk_widget_show(appChooserDialog);
-
-	return true;
+	return OpenWithDialog(absolutePath).exec();
 #else // !TDESKTOP_DISABLE_GTK_INTEGRATION
 	return false;
 #endif // TDESKTOP_DISABLE_GTK_INTEGRATION

Telegram/SourceFiles/platform/linux/launcher_linux.cpp

@@ -7,7 +7,6 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 */
 #include "platform/linux/launcher_linux.h"
 
-#include "base/platform/base_platform_info.h"
 #include "platform/linux/specific_linux.h"
 #include "core/crash_reports.h"
 #include "core/update_checker.h"
@@ -46,7 +45,7 @@ private:
 } // namespace
 
 Launcher::Launcher(int argc, char *argv[])
-: Core::Launcher(argc, argv, DeviceModelPretty(), SystemVersionPretty()) {
+: Core::Launcher(argc, argv) {
 }
 
 void Launcher::initHook() {

Telegram/SourceFiles/platform/linux/linux_gdk_helper.cpp

@@ -9,8 +9,6 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "platform/linux/linux_gdk_helper.h"
 
 #include "platform/linux/linux_libs.h"
-#include "base/platform/base_platform_info.h"
-#include "base/platform/linux/base_xcb_utilities_linux.h"
 
 extern "C" {
 #undef signals
@@ -33,6 +31,9 @@ GtkLoaded gdk_helper_loaded = GtkLoaded::GtkNone;
 #define GdkDrawable GdkWindow
 
 // Gtk 2
+using f_gdk_x11_drawable_get_xdisplay = Display*(*)(GdkDrawable*);
+f_gdk_x11_drawable_get_xdisplay gdk_x11_drawable_get_xdisplay = nullptr;
+
 using f_gdk_x11_drawable_get_xid = XID(*)(GdkDrawable*);
 f_gdk_x11_drawable_get_xid gdk_x11_drawable_get_xid = nullptr;
 
@@ -46,6 +47,12 @@ inline bool gdk_is_x11_window_check(Object *obj) {
 	return Libs::g_type_cit_helper(obj, gdk_x11_window_get_type());
 }
 
+using f_gdk_window_get_display = GdkDisplay*(*)(GdkWindow *window);
+f_gdk_window_get_display gdk_window_get_display = nullptr;
+
+using f_gdk_x11_display_get_xdisplay = Display*(*)(GdkDisplay *display);
+f_gdk_x11_display_get_xdisplay gdk_x11_display_get_xdisplay = nullptr;
+
 using f_gdk_x11_window_get_xid = Window(*)(GdkWindow *window);
 f_gdk_x11_window_get_xid gdk_x11_window_get_xid = nullptr;
 
@@ -53,6 +60,7 @@ bool GdkHelperLoadGtk2(QLibrary &lib) {
 #if defined DESKTOP_APP_USE_PACKAGED && !defined DESKTOP_APP_USE_PACKAGED_LAZY
 	return false;
 #else // DESKTOP_APP_USE_PACKAGED && !DESKTOP_APP_USE_PACKAGED_LAZY
+	if (!LOAD_SYMBOL(lib, "gdk_x11_drawable_get_xdisplay", gdk_x11_drawable_get_xdisplay)) return false;
 	if (!LOAD_SYMBOL(lib, "gdk_x11_drawable_get_xid", gdk_x11_drawable_get_xid)) return false;
 	return true;
 #endif // !DESKTOP_APP_USE_PACKAGED || DESKTOP_APP_USE_PACKAGED_LAZY
@@ -60,6 +68,8 @@ bool GdkHelperLoadGtk2(QLibrary &lib) {
 
 bool GdkHelperLoadGtk3(QLibrary &lib) {
 	if (!LOAD_SYMBOL(lib, "gdk_x11_window_get_type", gdk_x11_window_get_type)) return false;
+	if (!LOAD_SYMBOL(lib, "gdk_window_get_display", gdk_window_get_display)) return false;
+	if (!LOAD_SYMBOL(lib, "gdk_x11_display_get_xdisplay", gdk_x11_display_get_xdisplay)) return false;
 	if (!LOAD_SYMBOL(lib, "gdk_x11_window_get_xid", gdk_x11_window_get_xid)) return false;
 	return true;
 }
@@ -79,28 +89,14 @@ bool GdkHelperLoaded() {
 
 void XSetTransientForHint(GdkWindow *window, quintptr winId) {
 	if (gdk_helper_loaded == GtkLoaded::Gtk2) {
-		if (!IsWayland()) {
-			xcb_change_property(
-				base::Platform::XCB::GetConnectionFromQt(),
-				XCB_PROP_MODE_REPLACE,
-				gdk_x11_drawable_get_xid(window),
-				XCB_ATOM_WM_TRANSIENT_FOR,
-				XCB_ATOM_WINDOW,
-				32,
-				1,
-				&winId);
-		}
+		::XSetTransientForHint(gdk_x11_drawable_get_xdisplay(window),
+							   gdk_x11_drawable_get_xid(window),
+							   winId);
 	} else if (gdk_helper_loaded == GtkLoaded::Gtk3) {
-		if (!IsWayland() && gdk_is_x11_window_check(window)) {
-			xcb_change_property(
-				base::Platform::XCB::GetConnectionFromQt(),
-				XCB_PROP_MODE_REPLACE,
-				gdk_x11_window_get_xid(window),
-				XCB_ATOM_WM_TRANSIENT_FOR,
-				XCB_ATOM_WINDOW,
-				32,
-				1,
-				&winId);
+		if (gdk_is_x11_window_check(window)) {
+			::XSetTransientForHint(gdk_x11_display_get_xdisplay(gdk_window_get_display(window)),
+								   gdk_x11_window_get_xid(window),
+								   winId);
 		}
 	}
 }

Telegram/SourceFiles/platform/linux/linux_gsd_media_keys.cpp

@@ -0,0 +1,182 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#include "platform/linux/linux_gsd_media_keys.h"
+
+#include "core/sandbox.h"
+#include "media/player/media_player_instance.h"
+
+#include <QtDBus/QDBusConnection>
+#include <QtDBus/QDBusConnectionInterface>
+
+extern "C" {
+#undef signals
+#include <gio/gio.h>
+#define signals public
+} // extern "C"
+
+namespace Platform {
+namespace internal {
+namespace {
+
+constexpr auto kDBusTimeout = 30000;
+constexpr auto kService = "org.gnome.SettingsDaemon.MediaKeys"_cs;
+constexpr auto kOldService = "org.gnome.SettingsDaemon"_cs;
+constexpr auto kMATEService = "org.mate.SettingsDaemon"_cs;
+constexpr auto kObjectPath = "/org/gnome/SettingsDaemon/MediaKeys"_cs;
+constexpr auto kMATEObjectPath = "/org/mate/SettingsDaemon/MediaKeys"_cs;
+constexpr auto kInterface = kService;
+constexpr auto kMATEInterface = "org.mate.SettingsDaemon.MediaKeys"_cs;
+
+void KeyPressed(
+		GDBusConnection *connection,
+		const gchar *sender_name,
+		const gchar *object_path,
+		const gchar *interface_name,
+		const gchar *signal_name,
+		GVariant *parameters,
+		gpointer user_data) {
+	gchar *appUtf8;
+	gchar *keyUtf8;
+	g_variant_get(parameters, "(ss)", &appUtf8, &keyUtf8);
+	const auto app = QString::fromUtf8(appUtf8);
+	const auto key = QString::fromUtf8(keyUtf8);
+	g_free(keyUtf8);
+	g_free(appUtf8);
+
+	if (app != QCoreApplication::applicationName()) {
+		return;
+	}
+
+	Core::Sandbox::Instance().customEnterFromEventLoop([&] {
+		if (key == qstr("Play")) {
+			Media::Player::instance()->playPause();
+		} else if (key == qstr("Stop")) {
+			Media::Player::instance()->stop();
+		} else if (key == qstr("Next")) {
+			Media::Player::instance()->next();
+		} else if (key == qstr("Previous")) {
+			Media::Player::instance()->previous();
+		}
+	});
+}
+
+} // namespace
+
+GSDMediaKeys::GSDMediaKeys() {
+	GError *error = nullptr;
+	const auto interface = QDBusConnection::sessionBus().interface();
+
+	if (!interface) {
+		return;
+	}
+
+	if (interface->isServiceRegistered(kService.utf16())) {
+		_service = kService.utf16();
+		_objectPath = kObjectPath.utf16();
+		_interface = kInterface.utf16();
+	} else if (interface->isServiceRegistered(kOldService.utf16())) {
+		_service = kOldService.utf16();
+		_objectPath = kObjectPath.utf16();
+		_interface = kInterface.utf16();
+	} else if (interface->isServiceRegistered(kMATEService.utf16())) {
+		_service = kMATEService.utf16();
+		_objectPath = kMATEObjectPath.utf16();
+		_interface = kMATEInterface.utf16();
+	} else {
+		return;
+	}
+
+	_dbusConnection = g_bus_get_sync(
+		G_BUS_TYPE_SESSION,
+		nullptr,
+		&error);
+
+	if (error) {
+		LOG(("GSD Media Keys Error: %1").arg(error->message));
+		g_error_free(error);
+		return;
+	}
+
+	auto reply = g_dbus_connection_call_sync(
+		_dbusConnection,
+		_service.toUtf8(),
+		_objectPath.toUtf8(),
+		_interface.toUtf8(),
+		"GrabMediaPlayerKeys",
+		g_variant_new(
+			"(su)",
+			QCoreApplication::applicationName().toUtf8().constData(),
+			0),
+		nullptr,
+		G_DBUS_CALL_FLAGS_NONE,
+		kDBusTimeout,
+		nullptr,
+		&error);
+
+	if (!error) {
+		_grabbed = true;
+		g_variant_unref(reply);
+	} else {
+		LOG(("GSD Media Keys Error: %1").arg(error->message));
+		g_error_free(error);
+	}
+
+	_signalId = g_dbus_connection_signal_subscribe(
+		_dbusConnection,
+		_service.toUtf8(),
+		_interface.toUtf8(),
+		"MediaPlayerKeyPressed",
+		_objectPath.toUtf8(),
+		nullptr,
+		G_DBUS_SIGNAL_FLAGS_NONE,
+		KeyPressed,
+		nullptr,
+		nullptr);
+}
+
+GSDMediaKeys::~GSDMediaKeys() {
+	GError *error = nullptr;
+
+	if (_signalId != 0) {
+		g_dbus_connection_signal_unsubscribe(
+			_dbusConnection,
+			_signalId);
+	}
+
+	if (_grabbed) {
+		auto reply = g_dbus_connection_call_sync(
+			_dbusConnection,
+			_service.toUtf8(),
+			_objectPath.toUtf8(),
+			_interface.toUtf8(),
+			"ReleaseMediaPlayerKeys",
+			g_variant_new(
+				"(s)",
+				QCoreApplication::applicationName().toUtf8().constData()),
+			nullptr,
+			G_DBUS_CALL_FLAGS_NONE,
+			kDBusTimeout,
+			nullptr,
+			&error);
+
+		if (!error) {
+			_grabbed = false;
+			g_variant_unref(reply);
+		} else {
+			LOG(("GSD Media Keys Error: %1").arg(error->message));
+			g_error_free(error);
+		}
+	}
+
+	if (_dbusConnection) {
+		g_object_unref(_dbusConnection);
+	}
+}
+
+} // namespace internal
+} // namespace Platform

Telegram/SourceFiles/platform/linux/linux_gsd_media_keys.h

@@ -0,0 +1,36 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#pragma once
+
+typedef struct _GDBusConnection GDBusConnection;
+
+namespace Platform {
+namespace internal {
+
+class GSDMediaKeys {
+public:
+	GSDMediaKeys();
+
+	GSDMediaKeys(const GSDMediaKeys &other) = delete;
+	GSDMediaKeys &operator=(const GSDMediaKeys &other) = delete;
+	GSDMediaKeys(GSDMediaKeys &&other) = delete;
+	GSDMediaKeys &operator=(GSDMediaKeys &&other) = delete;
+
+	~GSDMediaKeys();
+
+private:
+	GDBusConnection *_dbusConnection = nullptr;
+	QString _service;
+	QString _objectPath;
+	QString _interface;
+	uint _signalId = 0;
+	bool _grabbed = false;
+};
+
+} // namespace internal
+} // namespace Platform

Telegram/SourceFiles/platform/linux/linux_libs.cpp

@@ -74,7 +74,6 @@ bool setupGtkBase(QLibrary &lib_gtk) {
 	if (!LOAD_SYMBOL(lib_gtk, "gtk_widget_realize", gtk_widget_realize)) return false;
 	if (!LOAD_SYMBOL(lib_gtk, "gtk_widget_hide_on_delete", gtk_widget_hide_on_delete)) return false;
 	if (!LOAD_SYMBOL(lib_gtk, "gtk_widget_destroy", gtk_widget_destroy)) return false;
-	if (!LOAD_SYMBOL(lib_gtk, "gtk_widget_get_type", gtk_widget_get_type)) return false;
 	if (!LOAD_SYMBOL(lib_gtk, "gtk_clipboard_get", gtk_clipboard_get)) return false;
 	if (!LOAD_SYMBOL(lib_gtk, "gtk_clipboard_store", gtk_clipboard_store)) return false;
 	if (!LOAD_SYMBOL(lib_gtk, "gtk_clipboard_wait_for_contents", gtk_clipboard_wait_for_contents)) return false;
@@ -236,7 +235,6 @@ f_gtk_widget_get_window gtk_widget_get_window = nullptr;
 f_gtk_widget_realize gtk_widget_realize = nullptr;
 f_gtk_widget_hide_on_delete gtk_widget_hide_on_delete = nullptr;
 f_gtk_widget_destroy gtk_widget_destroy = nullptr;
-f_gtk_widget_get_type gtk_widget_get_type = nullptr;
 f_gtk_clipboard_get gtk_clipboard_get = nullptr;
 f_gtk_clipboard_store gtk_clipboard_store = nullptr;
 f_gtk_clipboard_wait_for_contents gtk_clipboard_wait_for_contents = nullptr;

Telegram/SourceFiles/platform/linux/linux_libs.h

@@ -235,14 +235,6 @@ inline GtkWindow *gtk_window_cast(Object *obj) {
 	return g_type_cic_helper<GtkWindow, Object>(obj, gtk_window_get_type());
 }
 
-typedef GType (*f_gtk_widget_get_type)(void) G_GNUC_CONST;
-extern f_gtk_widget_get_type gtk_widget_get_type;
-
-template <typename Object>
-inline GtkWidget *gtk_widget_cast(Object *obj) {
-	return g_type_cic_helper<GtkWidget, Object>(obj, gtk_widget_get_type());
-}
-
 typedef GType (*f_gtk_app_chooser_get_type)(void) G_GNUC_CONST;
 extern f_gtk_app_chooser_get_type gtk_app_chooser_get_type;
 

Telegram/SourceFiles/platform/linux/linux_wayland_integration.cpp

@@ -15,11 +15,15 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include <private/qwaylandwindow_p.h>
 #include <private/qwaylandshellsurface_p.h>
 
+#include <connection_thread.h>
+#include <registry.h>
+
 #if QT_VERSION < QT_VERSION_CHECK(5, 13, 0) && !defined DESKTOP_APP_QT_PATCHED
 #include <wayland-client.h>
 #endif // Qt < 5.13 && !DESKTOP_APP_QT_PATCHED
 
 using QtWaylandClient::QWaylandWindow;
+using namespace KWayland::Client;
 
 namespace Platform {
 namespace internal {
@@ -51,15 +55,75 @@ enum wl_shell_surface_resize WlResizeFromEdges(Qt::Edges edges) {
 
 } // namespace
 
-WaylandIntegration::WaylandIntegration() {
+class WaylandIntegration::Private : public QObject {
+public:
+	Private();
+
+	[[nodiscard]] Registry &registry() {
+		return _registry;
+	}
+
+	[[nodiscard]] QEventLoop &interfacesLoop() {
+		return _interfacesLoop;
+	}
+
+	[[nodiscard]] bool interfacesAnnounced() const {
+		return _interfacesAnnounced;
+	}
+
+private:
+	ConnectionThread _connection;
+	Registry _registry;
+	QEventLoop _interfacesLoop;
+	bool _interfacesAnnounced = false;
+};
+
+WaylandIntegration::Private::Private() {
+	connect(&_connection, &ConnectionThread::connected, [=] {
+		LOG(("Successfully connected to Wayland server at socket: %1")
+			.arg(_connection.socketName()));
+
+		_registry.create(&_connection);
+		_registry.setup();
+	});
+
+	connect(
+		&_connection,
+		&ConnectionThread::connectionDied,
+		&_registry,
+		&Registry::destroy);
+
+	connect(&_registry, &Registry::interfacesAnnounced, [=] {
+		_interfacesAnnounced = true;
+		_interfacesLoop.quit();
+	});
+
+	_connection.initConnection();
 }
 
+WaylandIntegration::WaylandIntegration()
+: _private(std::make_unique<Private>()) {
+}
+
+WaylandIntegration::~WaylandIntegration() = default;
+
 WaylandIntegration *WaylandIntegration::Instance() {
 	if (!IsWayland()) return nullptr;
 	static WaylandIntegration instance;
 	return &instance;
 }
 
+void WaylandIntegration::waitForInterfaceAnnounce() {
+	if (!_private->interfacesAnnounced()) {
+		_private->interfacesLoop().exec();
+	}
+}
+
+bool WaylandIntegration::supportsXdgDecoration() {
+	return _private->registry().hasInterface(
+		Registry::Interface::XdgDecorationUnstableV1);
+}
+
 bool WaylandIntegration::startMove(QWindow *window) {
 	// There are startSystemMove on Qt 5.15
 #if QT_VERSION < QT_VERSION_CHECK(5, 15, 0) && !defined DESKTOP_APP_QT_PATCHED

Telegram/SourceFiles/platform/linux/linux_wayland_integration.h

@@ -15,12 +15,18 @@ namespace internal {
 class WaylandIntegration {
 public:
 	static WaylandIntegration *Instance();
+	void waitForInterfaceAnnounce();
+	bool supportsXdgDecoration();
 	bool startMove(QWindow *window);
 	bool startResize(QWindow *window, Qt::Edges edges);
 	bool showWindowMenu(QWindow *window);
 
 private:
 	WaylandIntegration();
+	~WaylandIntegration();
+
+	class Private;
+	const std::unique_ptr<Private> _private;
 };
 
 } // namespace internal

Telegram/SourceFiles/platform/linux/linux_wayland_integration_dummy.cpp

@@ -12,15 +12,27 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 namespace Platform {
 namespace internal {
 
+class WaylandIntegration::Private {
+};
+
 WaylandIntegration::WaylandIntegration() {
 }
 
+WaylandIntegration::~WaylandIntegration() = default;
+
 WaylandIntegration *WaylandIntegration::Instance() {
 	if (!IsWayland()) return nullptr;
 	static WaylandIntegration instance;
 	return &instance;
 }
 
+void WaylandIntegration::waitForInterfaceAnnounce() {
+}
+
+bool WaylandIntegration::supportsXdgDecoration() {
+	return false;
+}
+
 bool WaylandIntegration::startMove(QWindow *window) {
 	return false;
 }

Telegram/SourceFiles/platform/linux/main_window_linux.cpp

@@ -26,6 +26,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "base/platform/base_platform_info.h"
 #include "base/platform/linux/base_xcb_utilities_linux.h"
 #include "base/call_delayed.h"
+#include "ui/widgets/popup_menu.h"
 #include "ui/widgets/input_fields.h"
 #include "facades.h"
 #include "app.h"
@@ -34,6 +35,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include <QtGui/QWindow>
 
 #ifndef DESKTOP_APP_DISABLE_DBUS_INTEGRATION
+#include <QtCore/QTemporaryFile>
 #include <QtDBus/QDBusInterface>
 #include <QtDBus/QDBusConnection>
 #include <QtDBus/QDBusConnectionInterface>
@@ -41,9 +43,11 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include <QtDBus/QDBusMessage>
 #include <QtDBus/QDBusReply>
 #include <QtDBus/QDBusError>
+#include <QtDBus/QDBusObjectPath>
 #include <QtDBus/QDBusMetaType>
 
-#include <xcb/xcb.h>
+#include <statusnotifieritem.h>
+#include <dbusmenuexporter.h>
 
 extern "C" {
 #undef signals
@@ -58,6 +62,7 @@ namespace {
 constexpr auto kPanelTrayIconName = "telegram-panel"_cs;
 constexpr auto kMutePanelTrayIconName = "telegram-mute-panel"_cs;
 constexpr auto kAttentionPanelTrayIconName = "telegram-attention-panel"_cs;
+
 constexpr auto kPropertiesInterface = "org.freedesktop.DBus.Properties"_cs;
 constexpr auto kTrayIconFilename = "tdesktop-trayicon-XXXXXX.png"_cs;
 
@@ -69,6 +74,8 @@ constexpr auto kAppMenuService = "com.canonical.AppMenu.Registrar"_cs;
 constexpr auto kAppMenuObjectPath = "/com/canonical/AppMenu/Registrar"_cs;
 constexpr auto kAppMenuInterface = kAppMenuService;
 
+constexpr auto kMainMenuObjectPath = "/MenuBar"_cs;
+
 bool TrayIconMuted = true;
 int32 TrayIconCount = 0;
 base::flat_map<int, QImage> TrayIconImageBack;
@@ -395,10 +402,8 @@ bool UseUnityCounter() {
 
 	return Result;
 }
-#endif // !DESKTOP_APP_DISABLE_DBUS_INTEGRATION
 
 bool IsSNIAvailable() {
-#ifndef DESKTOP_APP_DISABLE_DBUS_INTEGRATION
 	auto message = QDBusMessage::createMethodCall(
 		kSNIWatcherService.utf16(),
 		kSNIWatcherObjectPath.utf16(),
@@ -406,7 +411,7 @@ bool IsSNIAvailable() {
 		qsl("Get"));
 
 	message.setArguments({
-		kSNIWatcherService.utf16(),
+		kSNIWatcherInterface.utf16(),
 		qsl("IsStatusNotifierHostRegistered")
 	});
 
@@ -418,7 +423,6 @@ bool IsSNIAvailable() {
 	} else if (reply.error().type() != QDBusError::ServiceUnknown) {
 		LOG(("SNI Error: %1").arg(reply.error().message()));
 	}
-#endif // !DESKTOP_APP_DISABLE_DBUS_INTEGRATION
 
 	return false;
 }
@@ -432,7 +436,6 @@ quint32 djbStringHash(QString string) {
 	return hash;
 }
 
-#ifndef DESKTOP_APP_DISABLE_DBUS_INTEGRATION
 bool IsAppMenuSupported() {
 	const auto interface = QDBusConnection::sessionBus().interface();
 
@@ -443,7 +446,7 @@ bool IsAppMenuSupported() {
 	return interface->isServiceRegistered(kAppMenuService.utf16());
 }
 
-void RegisterAppMenu(uint winId, const QDBusObjectPath &menuPath) {
+void RegisterAppMenu(uint winId, const QString &menuPath) {
 	auto message = QDBusMessage::createMethodCall(
 		kAppMenuService.utf16(),
 		kAppMenuObjectPath.utf16(),
@@ -452,7 +455,7 @@ void RegisterAppMenu(uint winId, const QDBusObjectPath &menuPath) {
 
 	message.setArguments({
 		winId,
-		QVariant::fromValue(menuPath)
+		QVariant::fromValue(QDBusObjectPath(menuPath))
 	});
 
 	QDBusConnection::sessionBus().send(message);
@@ -505,10 +508,9 @@ MainWindow::MainWindow(not_null<Window::Controller*> controller)
 }
 
 void MainWindow::initHook() {
-	_sniAvailable = IsSNIAvailable();
-	LOG(("System tray available: %1").arg(Logs::b(trayAvailable())));
-
 #ifndef DESKTOP_APP_DISABLE_DBUS_INTEGRATION
+	_sniAvailable = IsSNIAvailable();
+
 	_sniDBusProxy = g_dbus_proxy_new_for_bus_sync(
 		G_BUS_TYPE_SESSION,
 		G_DBUS_PROXY_FLAGS_NONE,
@@ -574,8 +576,9 @@ void MainWindow::initHook() {
 	}
 #endif // !DESKTOP_APP_DISABLE_DBUS_INTEGRATION
 
-	updateWaylandDecorationColors();
+	LOG(("System tray available: %1").arg(Logs::b(trayAvailable())));
 
+	updateWaylandDecorationColors();
 	style::PaletteChanged(
 	) | rpl::start_with_next([=] {
 		updateWaylandDecorationColors();
@@ -740,8 +743,8 @@ void MainWindow::handleAppMenuOwnerChanged(
 		LOG(("Not using D-Bus global menu."));
 	}
 
-	if (_appMenuSupported && !_mainMenuPath.path().isEmpty()) {
-		RegisterAppMenu(winId(), _mainMenuPath);
+	if (_appMenuSupported && _mainMenuExporter) {
+		RegisterAppMenu(winId(), kMainMenuObjectPath.utf16());
 	} else {
 		UnregisterAppMenu(winId());
 	}
@@ -819,25 +822,28 @@ void MainWindow::updateIconCounters() {
 #ifndef DESKTOP_APP_DISABLE_DBUS_INTEGRATION
 	if (UseUnityCounter()) {
 		const auto launcherUrl = "application://" + GetLauncherFilename();
+		// Gnome requires that count is a 64bit integer
+		const qint64 counterSlice = std::min(counter, 9999);
 		QVariantMap dbusUnityProperties;
-		if (counter > 0) {
-			// Gnome requires that count is a 64bit integer
-			dbusUnityProperties.insert(
-				"count",
-				(qint64) ((counter > 9999)
-					? 9999
-					: counter));
-			dbusUnityProperties.insert("count-visible", true);
+
+		if (counterSlice > 0) {
+			dbusUnityProperties["count"] = counterSlice;
+			dbusUnityProperties["count-visible"] = true;
 		} else {
-			dbusUnityProperties.insert("count-visible", false);
+			dbusUnityProperties["count-visible"] = false;
 		}
-		QDBusMessage signal = QDBusMessage::createSignal(
+
+		auto signal = QDBusMessage::createSignal(
 			"/com/canonical/unity/launcherentry/"
 				+ QString::number(djbStringHash(launcherUrl)),
 			"com.canonical.Unity.LauncherEntry",
 			"Update");
-		signal << launcherUrl;
-		signal << dbusUnityProperties;
+
+		signal.setArguments({
+			launcherUrl,
+			dbusUnityProperties
+		});
+
 		QDBusConnection::sessionBus().send(signal);
 	}
 
@@ -1056,14 +1062,12 @@ void MainWindow::createGlobalMenu() {
 
 	about->setMenuRole(QAction::AboutQtRole);
 
-	_mainMenuPath.setPath(qsl("/MenuBar"));
-
 	_mainMenuExporter = new DBusMenuExporter(
-		_mainMenuPath.path(),
+		kMainMenuObjectPath.utf16(),
 		psMainMenu);
 
 	if (_appMenuSupported) {
-		RegisterAppMenu(winId(), _mainMenuPath);
+		RegisterAppMenu(winId(), kMainMenuObjectPath.utf16());
 	}
 
 	updateGlobalMenu();
@@ -1195,9 +1199,9 @@ void MainWindow::handleVisibleChangedHook(bool visible) {
 	}
 
 #ifndef DESKTOP_APP_DISABLE_DBUS_INTEGRATION
-	if (_appMenuSupported && !_mainMenuPath.path().isEmpty()) {
+	if (_appMenuSupported && _mainMenuExporter) {
 		if (visible) {
-			RegisterAppMenu(winId(), _mainMenuPath);
+			RegisterAppMenu(winId(), kMainMenuObjectPath.utf16());
 		} else {
 			UnregisterAppMenu(winId());
 		}

Telegram/SourceFiles/platform/linux/main_window_linux.h

@@ -9,13 +9,14 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 
 #include "platform/platform_main_window.h"
 
-#include "ui/widgets/popup_menu.h"
+namespace Ui {
+class PopupMenu;
+} // namespace Ui
 
 #ifndef DESKTOP_APP_DISABLE_DBUS_INTEGRATION
-#include "statusnotifieritem.h"
-#include <QtCore/QTemporaryFile>
-#include <QtDBus/QDBusObjectPath>
-#include <dbusmenuexporter.h>
+class QTemporaryFile;
+class DBusMenuExporter;
+class StatusNotifierItem;
 
 typedef void* gpointer;
 typedef char gchar;
@@ -82,11 +83,10 @@ private:
 #ifndef DESKTOP_APP_DISABLE_DBUS_INTEGRATION
 	StatusNotifierItem *_sniTrayIcon = nullptr;
 	GDBusProxy *_sniDBusProxy = nullptr;
-	std::unique_ptr<QTemporaryFile> _trayIconFile = nullptr;
+	std::unique_ptr<QTemporaryFile> _trayIconFile;
 
 	bool _appMenuSupported = false;
 	DBusMenuExporter *_mainMenuExporter = nullptr;
-	QDBusObjectPath _mainMenuPath;
 
 	QMenu *psMainMenu = nullptr;
 	QAction *psLogout = nullptr;

Telegram/SourceFiles/platform/linux/notifications_manager_linux.cpp

@@ -17,7 +17,6 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "main/main_session.h"
 #include "lang/lang_keys.h"
 
-#ifndef DESKTOP_APP_DISABLE_DBUS_INTEGRATION
 #include <QtCore/QVersionNumber>
 #include <QtDBus/QDBusConnection>
 #include <QtDBus/QDBusMessage>
@@ -29,12 +28,9 @@ extern "C" {
 #include <gio/gio.h>
 #define signals public
 } // extern "C"
-#endif // !DESKTOP_APP_DISABLE_DBUS_INTEGRATION
 
 namespace Platform {
 namespace Notifications {
-
-#ifndef DESKTOP_APP_DISABLE_DBUS_INTEGRATION
 namespace {
 
 constexpr auto kDBusTimeout = 30000;
@@ -615,16 +611,13 @@ void NotificationData::notificationReplied(uint id, const QString &text) {
 }
 
 } // namespace
-#endif // !DESKTOP_APP_DISABLE_DBUS_INTEGRATION
 
 bool SkipAudio() {
-#ifndef DESKTOP_APP_DISABLE_DBUS_INTEGRATION
 	if (Supported()
 		&& GetCapabilities().contains(qsl("inhibitions"))
 		&& !InhibitedNotSupported) {
 		return Inhibited();
 	}
-#endif // !DESKTOP_APP_DISABLE_DBUS_INTEGRATION
 
 	return false;
 }
@@ -638,18 +631,12 @@ bool SkipFlashBounce() {
 }
 
 bool Supported() {
-#ifndef DESKTOP_APP_DISABLE_DBUS_INTEGRATION
 	return NotificationsSupported;
-#endif // !DESKTOP_APP_DISABLE_DBUS_INTEGRATION
-
-	return false;
 }
 
 std::unique_ptr<Window::Notifications::Manager> Create(
 		Window::Notifications::System *system) {
-#ifndef DESKTOP_APP_DISABLE_DBUS_INTEGRATION
 	GetSupported();
-#endif // !DESKTOP_APP_DISABLE_DBUS_INTEGRATION
 
 	if ((Core::App().settings().nativeNotifications() && Supported())
 		|| IsWayland()) {
@@ -659,27 +646,6 @@ std::unique_ptr<Window::Notifications::Manager> Create(
 	return nullptr;
 }
 
-#ifdef DESKTOP_APP_DISABLE_DBUS_INTEGRATION
-class Manager::Private {
-public:
-	using Type = Window::Notifications::CachedUserpics::Type;
-	explicit Private(not_null<Manager*> manager, Type type) {}
-
-	void showNotification(
-		not_null<PeerData*> peer,
-		std::shared_ptr<Data::CloudImageView> &userpicView,
-		MsgId msgId,
-		const QString &title,
-		const QString &subtitle,
-		const QString &msg,
-		bool hideNameAndPhoto,
-		bool hideReplyButton) {}
-	void clearAll() {}
-	void clearFromHistory(not_null<History*> history) {}
-	void clearFromSession(not_null<Main::Session*> session) {}
-	void clearNotification(NotificationId id) {}
-};
-#else // DESKTOP_APP_DISABLE_DBUS_INTEGRATION
 class Manager::Private {
 public:
 	using Type = Window::Notifications::CachedUserpics::Type;
@@ -866,7 +832,6 @@ void Manager::Private::clearNotification(NotificationId id) {
 Manager::Private::~Private() {
 	clearAll();
 }
-#endif // !DESKTOP_APP_DISABLE_DBUS_INTEGRATION
 
 Manager::Manager(not_null<Window::Notifications::System*> system)
 : NativeManager(system)

Telegram/SourceFiles/platform/linux/notifications_manager_linux_dummy.cpp

@@ -0,0 +1,40 @@
+
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#include "platform/linux/notifications_manager_linux.h"
+
+namespace Platform {
+namespace Notifications {
+
+bool SkipAudio() {
+	return false;
+}
+
+bool SkipToast() {
+	return false;
+}
+
+bool SkipFlashBounce() {
+	return false;
+}
+
+bool Supported() {
+	return false;
+}
+
+std::unique_ptr<Window::Notifications::Manager> Create(
+		Window::Notifications::System *system) {
+	if (IsWayland()) {
+		return std::make_unique<Window::Notifications::DummyManager>(system);
+	}
+
+	return nullptr;
+}
+
+} // namespace Notifications
+} // namespace Platform

Telegram/SourceFiles/platform/linux/specific_linux.cpp

@@ -24,6 +24,10 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "window/window_controller.h"
 #include "core/application.h"
 
+#ifndef DESKTOP_APP_DISABLE_DBUS_INTEGRATION
+#include "platform/linux/linux_gsd_media_keys.h"
+#endif // !DESKTOP_APP_DISABLE_DBUS_INTEGRATION
+
 #include <QtWidgets/QApplication>
 #include <QtWidgets/QDesktopWidget>
 #include <QtCore/QStandardPaths>
@@ -451,25 +455,6 @@ bool ShowXCBWindowMenu(QWindow *window) {
 	return true;
 }
 
-bool XCBFrameExtentsSupported() {
-	const auto connection = base::Platform::XCB::GetConnectionFromQt();
-	if (!connection) {
-		return false;
-	}
-
-	const auto frameExtentsAtom = base::Platform::XCB::GetAtom(
-		connection,
-		kXCBFrameExtentsAtomName.utf16());
-
-	if (!frameExtentsAtom.has_value()) {
-		return false;
-	}
-
-	return ranges::contains(
-		base::Platform::XCB::GetWMSupported(connection),
-		*frameExtentsAtom);
-}
-
 bool SetXCBFrameExtents(QWindow *window, const QMargins &extents) {
 	const auto connection = base::Platform::XCB::GetConnectionFromQt();
 	if (!connection) {
@@ -526,25 +511,6 @@ bool UnsetXCBFrameExtents(QWindow *window) {
 	return true;
 }
 
-bool XCBSkipTaskbarSupported() {
-	const auto connection = base::Platform::XCB::GetConnectionFromQt();
-	if (!connection) {
-		return false;
-	}
-
-	const auto skipTaskbarAtom = base::Platform::XCB::GetAtom(
-		connection,
-		"_NET_WM_STATE_SKIP_TASKBAR");
-
-	if (!skipTaskbarAtom.has_value()) {
-		return false;
-	}
-
-	return ranges::contains(
-		base::Platform::XCB::GetWMSupported(connection),
-		*skipTaskbarAtom);
-}
-
 Window::Control GtkKeywordToWindowControl(const QString &keyword) {
 	if (keyword == qstr("minimize")) {
 		return Window::Control::Minimize;
@@ -559,6 +525,18 @@ Window::Control GtkKeywordToWindowControl(const QString &keyword) {
 
 } // namespace
 
+void SetWatchingMediaKeys(bool watching) {
+#ifndef DESKTOP_APP_DISABLE_DBUS_INTEGRATION
+	static std::unique_ptr<internal::GSDMediaKeys> Instance;
+
+	if (watching && !Instance) {
+		Instance = std::make_unique<internal::GSDMediaKeys>();
+	} else if (!watching && Instance) {
+		Instance = nullptr;
+	}
+#endif // !DESKTOP_APP_DISABLE_DBUS_INTEGRATION
+}
+
 void SetApplicationIcon(const QIcon &icon) {
 	QApplication::setWindowIcon(icon);
 }
@@ -804,7 +782,8 @@ bool TrayIconSupported() {
 }
 
 bool SkipTaskbarSupported() {
-	return !IsWayland() && XCBSkipTaskbarSupported();
+	return !IsWayland()
+		&& base::Platform::XCB::IsSupportedByWM("_NET_WM_STATE_SKIP_TASKBAR");
 }
 
 bool StartSystemMove(QWindow *window) {
@@ -848,11 +827,8 @@ bool UnsetWindowExtents(QWindow *window) {
 }
 
 bool WindowsNeedShadow() {
-	if (!IsWayland() && XCBFrameExtentsSupported()) {
-		return true;
-	}
-
-	return false;
+	return !IsWayland()
+		&& base::Platform::XCB::IsSupportedByWM(kXCBFrameExtentsAtomName.utf16());
 }
 
 Window::ControlsLayout WindowControlsLayout() {
@@ -1250,6 +1226,11 @@ void start() {
 
 	Libs::start();
 	MainWindow::LibsLoaded();
+
+	// wait for interface announce to know if native window frame is supported
+	if (const auto waylandIntegration = WaylandIntegration::Instance()) {
+		waylandIntegration->waitForInterfaceAnnounce();
+	}
 }
 
 void finish() {

Telegram/SourceFiles/platform/linux/specific_linux.h

@@ -17,9 +17,6 @@ class LocationPoint;
 
 namespace Platform {
 
-inline void SetWatchingMediaKeys(bool watching) {
-}
-
 bool InFlatpak();
 bool InSnap();
 bool IsStaticBinary();

Telegram/SourceFiles/platform/linux/window_title_linux.cpp

@@ -7,7 +7,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 */
 #include "platform/linux/window_title_linux.h"
 
-#include "platform/linux/linux_desktop_environment.h"
+#include "platform/linux/linux_wayland_integration.h"
 #include "base/platform/base_platform_info.h"
 
 namespace Platform {
@@ -24,9 +24,10 @@ bool SystemMoveResizeSupported() {
 } // namespace
 
 bool AllowNativeWindowFrameToggle() {
+	const auto waylandIntegration = internal::WaylandIntegration::Instance();
 	return SystemMoveResizeSupported()
-		// https://gitlab.gnome.org/GNOME/mutter/-/issues/217
-		&& !(DesktopEnvironment::IsGnome() && IsWayland());
+		&& (!waylandIntegration
+			|| waylandIntegration->supportsXdgDecoration());
 }
 
 object_ptr<Window::TitleWidget> CreateTitleWidget(QWidget *parent) {

Telegram/SourceFiles/platform/mac/launcher_mac.mm

@@ -9,7 +9,6 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 
 #include "core/crash_reports.h"
 #include "core/update_checker.h"
-#include "base/platform/base_platform_info.h"
 #include "base/platform/base_platform_file_utilities.h"
 #include "base/platform/mac/base_utilities_mac.h"
 
@@ -20,7 +19,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 namespace Platform {
 
 Launcher::Launcher(int argc, char *argv[])
-: Core::Launcher(argc, argv, DeviceModelPretty(), SystemVersionPretty()) {
+: Core::Launcher(argc, argv) {
 }
 
 void Launcher::initHook() {

Telegram/SourceFiles/platform/win/launcher_win.cpp

@@ -9,7 +9,6 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 
 #include "core/crash_reports.h"
 #include "core/update_checker.h"
-#include "base/platform/base_platform_info.h"
 #include "base/platform/win/base_windows_h.h"
 
 #include <shellapi.h>
@@ -18,7 +17,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 namespace Platform {
 
 Launcher::Launcher(int argc, char *argv[])
-: Core::Launcher(argc, argv, DeviceModelPretty(), SystemVersionPretty()) {
+: Core::Launcher(argc, argv) {
 }
 
 std::optional<QStringList> Launcher::readArgumentsHook(

Telegram/SourceFiles/platform/win/main_window_win.cpp

@@ -217,7 +217,11 @@ void MainWindow::psSetupTrayIcon() {
 		auto icon = QIcon(App::pixmapFromImageInPlace(Core::App().logoNoMargin()));
 
 		trayIcon->setIcon(icon);
-		connect(trayIcon, SIGNAL(messageClicked()), this, SLOT(showFromTray()));
+		connect(
+			trayIcon,
+			&QSystemTrayIcon::messageClicked,
+			this,
+			[=] { App::wnd()->showFromTray(); });
 		attachToTrayIcon(trayIcon);
 	}
 	updateIconCounters();

Telegram/SourceFiles/settings/settings_calls.cpp

@@ -30,11 +30,18 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "webrtc/webrtc_media_devices.h"
 #include "webrtc/webrtc_video_track.h"
 #include "webrtc/webrtc_audio_input_tester.h"
+#include "webrtc/webrtc_create_adm.h" // Webrtc::Backend.
 #include "tgcalls/VideoCaptureInterface.h"
 #include "facades.h"
+#include "app.h" // App::restart().
 #include "styles/style_layers.h"
 
 namespace Settings {
+namespace {
+
+using namespace Webrtc;
+
+} // namespace
 
 Calls::Calls(
 	QWidget *parent,
@@ -58,7 +65,7 @@ void Calls::setupContent() {
 	const auto content = Ui::CreateChild<Ui::VerticalLayout>(this);
 
 	const auto &settings = Core::App().settings();
-	const auto cameras = Webrtc::GetVideoInputList();
+	const auto cameras = GetVideoInputList();
 	if (!cameras.empty()) {
 		const auto hasCall = (Core::App().calls().currentCall() != nullptr);
 
@@ -66,16 +73,16 @@ void Calls::setupContent() {
 		const auto capturer = capturerOwner.get();
 		content->lifetime().add([owner = std::move(capturerOwner)]{});
 
-		const auto track = content->lifetime().make_state<Webrtc::VideoTrack>(
+		const auto track = content->lifetime().make_state<VideoTrack>(
 			(hasCall
-				? Webrtc::VideoState::Inactive
-				: Webrtc::VideoState::Active));
+				? VideoState::Inactive
+				: VideoState::Active));
 
 		const auto currentCameraName = [&] {
 			const auto i = ranges::find(
 				cameras,
 				settings.callVideoInputDeviceId(),
-				&Webrtc::VideoInput::id);
+				&VideoInput::id);
 			return (i != end(cameras))
 				? i->name
 				: tr::lng_settings_call_device_default(tr::now);
@@ -93,15 +100,15 @@ void Calls::setupContent() {
 			),
 			st::settingsButton
 		)->addClickHandler([=] {
-			const auto &devices = Webrtc::GetVideoInputList();
+			const auto &devices = GetVideoInputList();
 			const auto options = ranges::view::concat(
 				ranges::view::single(tr::lng_settings_call_device_default(tr::now)),
-				devices | ranges::view::transform(&Webrtc::VideoInput::name)
+				devices | ranges::view::transform(&VideoInput::name)
 			) | ranges::to_vector;
 			const auto i = ranges::find(
 				devices,
 				Core::App().settings().callVideoInputDeviceId(),
-				&Webrtc::VideoInput::id);
+				&VideoInput::id);
 			const auto currentOption = (i != end(devices))
 				? int(i - begin(devices) + 1)
 				: 0;
@@ -159,11 +166,11 @@ void Calls::setupContent() {
 		Core::App().calls().currentCallValue(
 		) | rpl::start_with_next([=](::Calls::Call *value) {
 			if (value) {
-				track->setState(Webrtc::VideoState::Inactive);
+				track->setState(VideoState::Inactive);
 				bubbleWrap->resize(bubbleWrap->width(), 0);
 			} else {
 				capturer->setPreferredAspectRatio(0.);
-				track->setState(Webrtc::VideoState::Active);
+				track->setState(VideoState::Active);
 				capturer->setOutput(track->sink());
 			}
 		}, content->lifetime());
@@ -252,6 +259,22 @@ void Calls::setupContent() {
 //	}, content->lifetime());
 //#endif // Q_OS_MAC && !OS_MAC_STORE
 
+	const auto backend = [&]() -> QString {
+		using namespace Webrtc;
+		switch (settings.callAudioBackend()) {
+		case Backend::OpenAL: return "OpenAL";
+		case Backend::ADM: return "WebRTC ADM";
+		case Backend::ADM2: return "WebRTC ADM2";
+		}
+		Unexpected("Value in backend.");
+	}();
+	AddButton(
+		content,
+		rpl::single("Call audio backend: " + backend),
+		st::settingsButton
+	)->addClickHandler([] {
+		Ui::show(ChooseAudioBackendBox());
+	});
 	AddButton(
 		content,
 		tr::lng_settings_call_open_system_prefs(),
@@ -300,27 +323,30 @@ void Calls::requestPermissionAndStartTestingMicrophone() {
 
 void Calls::startTestingMicrophone() {
 	_levelUpdateTimer.callEach(kMicTestUpdateInterval);
-	_micTester = std::make_unique<Webrtc::AudioInputTester>(
+	_micTester = std::make_unique<AudioInputTester>(
+		Core::App().settings().callAudioBackend(),
 		Core::App().settings().callInputDeviceId());
 }
 
 QString CurrentAudioOutputName() {
-	const auto list = Webrtc::GetAudioOutputList();
+	const auto &settings = Core::App().settings();
+	const auto list = GetAudioOutputList(settings.callAudioBackend());
 	const auto i = ranges::find(
 		list,
-		Core::App().settings().callOutputDeviceId(),
-		&Webrtc::AudioOutput::id);
+		settings.callOutputDeviceId(),
+		&AudioOutput::id);
 	return (i != end(list))
 		? i->name
 		: tr::lng_settings_call_device_default(tr::now);
 }
 
 QString CurrentAudioInputName() {
-	const auto list = Webrtc::GetAudioInputList();
+	const auto &settings = Core::App().settings();
+	const auto list = GetAudioInputList(settings.callAudioBackend());
 	const auto i = ranges::find(
 		list,
-		Core::App().settings().callInputDeviceId(),
-		&Webrtc::AudioInput::id);
+		settings.callInputDeviceId(),
+		&AudioInput::id);
 	return (i != end(list))
 		? i->name
 		: tr::lng_settings_call_device_default(tr::now);
@@ -330,21 +356,22 @@ object_ptr<SingleChoiceBox> ChooseAudioOutputBox(
 		Fn<void(QString id, QString name)> chosen,
 		const style::Checkbox *st,
 		const style::Radio *radioSt) {
-	const auto &devices = Webrtc::GetAudioOutputList();
+	const auto &settings = Core::App().settings();
+	const auto list = GetAudioOutputList(settings.callAudioBackend());
 	const auto options = ranges::view::concat(
 		ranges::view::single(tr::lng_settings_call_device_default(tr::now)),
-		devices | ranges::view::transform(&Webrtc::AudioOutput::name)
+		list | ranges::view::transform(&AudioOutput::name)
 	) | ranges::to_vector;
 	const auto i = ranges::find(
-		devices,
-		Core::App().settings().callOutputDeviceId(),
-		&Webrtc::AudioOutput::id);
-	const auto currentOption = (i != end(devices))
-		? int(i - begin(devices) + 1)
+		list,
+		settings.callOutputDeviceId(),
+		&AudioOutput::id);
+	const auto currentOption = (i != end(list))
+		? int(i - begin(list) + 1)
 		: 0;
 	const auto save = [=](int option) {
 		const auto deviceId = option
-			? devices[option - 1].id
+			? list[option - 1].id
 			: "default";
 		Core::App().calls().setCurrentAudioDevice(false, deviceId);
 		chosen(deviceId, options[option]);
@@ -362,21 +389,22 @@ object_ptr<SingleChoiceBox> ChooseAudioInputBox(
 		Fn<void(QString id, QString name)> chosen,
 		const style::Checkbox *st,
 		const style::Radio *radioSt) {
-	const auto devices = Webrtc::GetAudioInputList();
+	const auto &settings = Core::App().settings();
+	const auto list = GetAudioInputList(settings.callAudioBackend());
 	const auto options = ranges::view::concat(
 		ranges::view::single(tr::lng_settings_call_device_default(tr::now)),
-		devices | ranges::view::transform(&Webrtc::AudioInput::name)
+		list | ranges::view::transform(&AudioInput::name)
 	) | ranges::to_vector;
 	const auto i = ranges::find(
-		devices,
+		list,
 		Core::App().settings().callInputDeviceId(),
-		&Webrtc::AudioInput::id);
-	const auto currentOption = (i != end(devices))
-		? int(i - begin(devices) + 1)
+		&AudioInput::id);
+	const auto currentOption = (i != end(list))
+		? int(i - begin(list) + 1)
 		: 0;
 	const auto save = [=](int option) {
 		const auto deviceId = option
-			? devices[option - 1].id
+			? list[option - 1].id
 			: "default";
 		Core::App().calls().setCurrentAudioDevice(true, deviceId);
 		chosen(deviceId, options[option]);
@@ -390,5 +418,33 @@ object_ptr<SingleChoiceBox> ChooseAudioInputBox(
 		radioSt);
 }
 
+object_ptr<SingleChoiceBox> ChooseAudioBackendBox(
+		const style::Checkbox *st,
+		const style::Radio *radioSt) {
+	const auto &settings = Core::App().settings();
+	const auto list = GetAudioInputList(settings.callAudioBackend());
+	const auto options = std::vector<QString>{
+		"OpenAL",
+		"Webrtc ADM",
+#ifdef Q_OS_WIN
+		"Webrtc ADM2",
+#endif // Q_OS_WIN
+	};
+	const auto currentOption = static_cast<int>(settings.callAudioBackend());
+	const auto save = [=](int option) {
+		Core::App().settings().setCallAudioBackend(
+			static_cast<Webrtc::Backend>(option));
+		Core::App().saveSettings();
+		App::restart();
+	};
+	return Box<SingleChoiceBox>(
+		rpl::single<QString>("Calls audio backend"),
+		options,
+		currentOption,
+		save,
+		st,
+		radioSt);
+}
+
 } // namespace Settings
 

Telegram/SourceFiles/settings/settings_calls.h

@@ -69,6 +69,9 @@ inline constexpr auto kMicTestAnimationDuration = crl::time(200);
 	Fn<void(QString id, QString name)> chosen,
 	const style::Checkbox *st = nullptr,
 	const style::Radio *radioSt = nullptr);
+[[nodiscard]] object_ptr<SingleChoiceBox> ChooseAudioBackendBox(
+	const style::Checkbox *st = nullptr,
+	const style::Radio *radioSt = nullptr);
 
 } // namespace Settings
 

Telegram/SourceFiles/settings/settings_intro.cpp

@@ -73,10 +73,18 @@ object_ptr<Ui::RpWidget> CreateIntroSettings(
 		SetupUpdate(result);
 		AddSkip(result);
 	}
-	AddDivider(result);
-	AddSkip(result);
-	SetupSystemIntegrationContent(result);
-	AddSkip(result);
+	{
+		auto wrap = object_ptr<Ui::VerticalLayout>(result);
+		SetupSystemIntegrationContent(wrap.data());
+		if (wrap->count() > 0) {
+			AddDivider(result);
+			AddSkip(result);
+			result->add(object_ptr<Ui::OverrideMargins>(
+				result,
+				std::move(wrap)));
+			AddSkip(result);
+		}
+	}
 	AddDivider(result);
 	AddSkip(result);
 	SetupInterfaceScale(result, false);

Telegram/SourceFiles/window/notifications_manager.h

@@ -248,6 +248,30 @@ protected:
 
 };
 
+class DummyManager : public NativeManager {
+public:
+	using NativeManager::NativeManager;
+
+protected:
+	void doShowNativeNotification(
+		not_null<PeerData*> peer,
+		std::shared_ptr<Data::CloudImageView> &userpicView,
+		MsgId msgId,
+		const QString &title,
+		const QString &subtitle,
+		const QString &msg,
+		bool hideNameAndPhoto,
+		bool hideReplyButton) override {
+	}
+	void doClearAllFast() override {
+	}
+	void doClearFromHistory(not_null<History*> history) override {
+	}
+	void doClearFromSession(not_null<Main::Session*> session) override {
+	}
+
+};
+
 QString WrapFromScheduled(const QString &text);
 
 } // namespace Notifications

Telegram/build/docker/centos_env/Dockerfile

@@ -1,12 +1,14 @@
 FROM centos:7 AS builder
 
 ENV GIT https://github.com
-ENV PKG_CONFIG_PATH /usr/local/lib/pkgconfig
+ENV PKG_CONFIG_PATH /usr/local/lib/pkgconfig:/usr/local/share/pkgconfig
 ENV QT 5_15_2
 ENV QT_TAG v5.15.2
 ENV QT_PREFIX /usr/local/desktop-app/Qt-5.15.2
 ENV OPENSSL_VER 1_1_1
 ENV OPENSSL_PREFIX /usr/local/desktop-app/openssl-1.1.1
+ENV PATH ${PATH}:${QT_PREFIX}/bin
+ENV Qt5_DIR ${QT_PREFIX}
 
 RUN yum -y install https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm
 RUN yum -y install https://packages.endpoint.com/rhel/7/os/x86_64/endpoint-repo-1.7-1.x86_64.rpm
@@ -27,8 +29,20 @@ ENV LibrariesPath /usr/src/Libraries
 WORKDIR $LibrariesPath
 
 FROM builder AS patches
-RUN git clone $GIT/desktop-app/patches.git
-RUN cd patches && git checkout 6afd91a
+ADD https://api.github.com/repos/desktop-app/patches/git/refs/heads/master patches-version.json
+RUN git clone --depth=1 $GIT/desktop-app/patches.git
+
+FROM builder AS extra-cmake-modules
+
+RUN git clone -b v5.77.0 --depth=1 $GIT/KDE/extra-cmake-modules.git
+
+WORKDIR extra-cmake-modules
+RUN cmake3 -B build . -DCMAKE_BUILD_TYPE=Release -DBUILD_TESTING=OFF
+RUN cmake3 --build build -j$(nproc)
+RUN DESTDIR="$LibrariesPath/extra-cmake-modules-cache" cmake3 --install build
+
+WORKDIR ..
+RUN rm -rf extra-cmake-modules
 
 FROM builder AS libffi
 RUN git clone -b v3.3 --depth=1 $GIT/libffi/libffi.git
@@ -107,20 +121,18 @@ RUN rm -rf libxcb
 
 FROM builder AS xcb-wm
 
-RUN git clone --recursive https://gitlab.freedesktop.org/xorg/lib/libxcb-wm.git
+RUN git clone -b 0.4.1 --depth=1 --recursive https://gitlab.freedesktop.org/xorg/lib/libxcb-wm.git
 
 WORKDIR libxcb-wm
-RUN git checkout 0.4.1
 RUN ./autogen.sh --enable-static
 RUN make -j$(nproc)
 RUN make DESTDIR="$LibrariesPath/xcb-wm-cache" install
 
 FROM builder AS xcb-util
 
-RUN git clone --recursive https://gitlab.freedesktop.org/xorg/lib/libxcb-util.git
+RUN git clone -b 0.4.0 --depth=1 --recursive https://gitlab.freedesktop.org/xorg/lib/libxcb-util.git
 
 WORKDIR libxcb-util
-RUN git checkout 0.4.0
 RUN ./autogen.sh --enable-static
 RUN make -j$(nproc)
 RUN make DESTDIR="$LibrariesPath/xcb-util-cache" install
@@ -128,30 +140,27 @@ RUN make DESTDIR="$LibrariesPath/xcb-util-cache" install
 FROM builder AS xcb-image
 COPY --from=xcb-util ${LibrariesPath}/xcb-util-cache /
 
-RUN git clone --recursive https://gitlab.freedesktop.org/xorg/lib/libxcb-image.git
+RUN git clone -b 0.4.0 --depth=1 --recursive https://gitlab.freedesktop.org/xorg/lib/libxcb-image.git
 
 WORKDIR libxcb-image
-RUN git checkout 0.4.0
 RUN ./autogen.sh --enable-static
 RUN make -j$(nproc)
 RUN make DESTDIR="$LibrariesPath/xcb-image-cache" install
 
 FROM builder AS xcb-keysyms
 
-RUN git clone --recursive https://gitlab.freedesktop.org/xorg/lib/libxcb-keysyms.git
+RUN git clone -b 0.4.0 --depth=1 --recursive https://gitlab.freedesktop.org/xorg/lib/libxcb-keysyms.git
 
 WORKDIR libxcb-keysyms
-RUN git checkout 0.4.0
 RUN ./autogen.sh --enable-static
 RUN make -j$(nproc)
 RUN make DESTDIR="$LibrariesPath/xcb-keysyms-cache" install
 
 FROM builder AS xcb-render-util
 
-RUN git clone --recursive https://gitlab.freedesktop.org/xorg/lib/libxcb-render-util.git
+RUN git clone -b 0.3.9 --depth=1 --recursive https://gitlab.freedesktop.org/xorg/lib/libxcb-render-util.git
 
 WORKDIR libxcb-render-util
-RUN git checkout 0.3.9
 RUN ./autogen.sh --enable-static
 RUN make -j$(nproc)
 RUN make DESTDIR="$LibrariesPath/xcb-render-util-cache" install
@@ -208,6 +217,32 @@ RUN make DESTDIR="$LibrariesPath/wayland-cache" install
 WORKDIR ..
 RUN rm -rf wayland
 
+FROM builder AS wayland-protocols
+COPY --from=wayland ${LibrariesPath}/wayland-cache /
+
+RUN git clone -b 1.18 --depth=1 https://gitlab.freedesktop.org/wayland/wayland-protocols.git
+
+WORKDIR wayland-protocols
+RUN ./autogen.sh
+RUN make -j$(nproc)
+RUN make DESTDIR="$LibrariesPath/wayland-protocols-cache" install
+
+WORKDIR ..
+RUN rm -rf wayland-protocols
+
+FROM builder AS plasma-wayland-protocols
+COPY --from=extra-cmake-modules ${LibrariesPath}/extra-cmake-modules-cache /
+
+RUN git clone -b v1.1.1 --depth=1 $GIT/KDE/plasma-wayland-protocols.git
+
+WORKDIR plasma-wayland-protocols
+RUN cmake3 -B build . -DCMAKE_BUILD_TYPE=Release
+RUN cmake3 --build build -j$(nproc)
+RUN DESTDIR="$LibrariesPath/plasma-wayland-protocols-cache" cmake3 --install build
+
+WORKDIR ..
+RUN rm -rf plasma-wayland-protocols
+
 FROM builder AS libva
 
 COPY --from=libffi ${LibrariesPath}/libffi-cache /
@@ -457,6 +492,34 @@ RUN make INSTALL_ROOT="$LibrariesPath/qt-cache" install
 WORKDIR ..
 RUN rm -rf qt_${QT}
 
+FROM builder AS kwayland
+
+COPY --from=extra-cmake-modules ${LibrariesPath}/extra-cmake-modules-cache /
+COPY --from=libffi ${LibrariesPath}/libffi-cache /
+COPY --from=mozjpeg ${LibrariesPath}/mozjpeg-cache /
+COPY --from=xcb ${LibrariesPath}/xcb-cache /
+COPY --from=xcb-wm ${LibrariesPath}/xcb-wm-cache /
+COPY --from=xcb-util ${LibrariesPath}/xcb-util-cache /
+COPY --from=xcb-image ${LibrariesPath}/xcb-image-cache /
+COPY --from=xcb-keysyms ${LibrariesPath}/xcb-keysyms-cache /
+COPY --from=xcb-render-util ${LibrariesPath}/xcb-render-util-cache /
+COPY --from=wayland ${LibrariesPath}/wayland-cache /
+COPY --from=wayland-protocols ${LibrariesPath}/wayland-protocols-cache /
+COPY --from=plasma-wayland-protocols ${LibrariesPath}/plasma-wayland-protocols-cache /
+COPY --from=openssl ${LibrariesPath}/openssl-cache /
+COPY --from=xkbcommon ${LibrariesPath}/xkbcommon-cache /
+COPY --from=qt ${LibrariesPath}/qt-cache /
+
+RUN git clone -b v5.77.0 --depth=1 $GIT/KDE/kwayland.git
+
+WORKDIR kwayland
+RUN cmake3 -B build . -DCMAKE_BUILD_TYPE=Release -DBUILD_SHARED_LIBS=OFF -DBUILD_TESTING=OFF
+RUN cmake3 --build build -j$(nproc)
+RUN DESTDIR="$LibrariesPath/kwayland-cache" cmake3 --install build
+
+WORKDIR ..
+RUN rm -rf kwayland
+
 FROM patches AS breakpad
 RUN git clone https://chromium.googlesource.com/breakpad/breakpad.git
 
@@ -482,7 +545,7 @@ RUN make DESTDIR="$BreakpadCache" install
 
 WORKDIR src
 RUN rm -rf testing
-RUN git clone $GIT/google/googletest.git testing
+RUN git clone --depth=1 $GIT/google/googletest.git testing
 
 WORKDIR tools
 RUN sed -i 's/minidump_upload.m/minidump_upload.cc/' linux/tools_linux.gypi
@@ -503,10 +566,10 @@ COPY --from=opus ${LibrariesPath}/opus-cache /
 COPY --from=ffmpeg ${LibrariesPath}/ffmpeg-cache /
 COPY --from=openssl ${LibrariesPath}/openssl-cache /
 
-RUN git clone --recursive $GIT/desktop-app/tg_owt.git
+ADD https://api.github.com/repos/desktop-app/tg_owt/git/refs/heads/master tg_owt-version.json
+RUN git clone --depth=1 --recursive $GIT/desktop-app/tg_owt.git
 
 WORKDIR tg_owt
-RUN git checkout 75ac669
 
 RUN cmake3 -B out/Release . \
 	-DCMAKE_BUILD_TYPE=Release \
@@ -552,6 +615,7 @@ COPY --from=openal ${LibrariesPath}/openal-cache /
 COPY --from=openssl ${LibrariesPath}/openssl-cache /
 COPY --from=xkbcommon ${LibrariesPath}/xkbcommon-cache /
 COPY --from=qt ${LibrariesPath}/qt-cache /
+COPY --from=kwayland ${LibrariesPath}/kwayland-cache /
 COPY --from=breakpad ${LibrariesPath}/breakpad breakpad
 COPY --from=breakpad ${LibrariesPath}/breakpad-cache /
 COPY --from=webrtc ${LibrariesPath}/tg_owt tg_owt

Telegram/build/version

@@ -1,7 +1,7 @@
-AppVersion         2005002
+AppVersion         2005004
 AppVersionStrMajor 2.5
-AppVersionStrSmall 2.5.2
-AppVersionStr      2.5.2
+AppVersionStrSmall 2.5.4
+AppVersionStr      2.5.4
 BetaChannel        1
 AlphaVersion       0
-AppVersionOriginal 2.5.2.beta
+AppVersionOriginal 2.5.4.beta

Telegram/cmake/lib_tgcalls.cmake

@@ -28,6 +28,8 @@ PRIVATE
 if (NOT DESKTOP_APP_DISABLE_WEBRTC_INTEGRATION)
     nice_target_sources(lib_tgcalls ${tgcalls_loc}
     PRIVATE
+        AudioDeviceHelper.cpp
+        AudioDeviceHelper.h
         CodecSelectHelper.cpp
         CodecSelectHelper.h
         CryptoHelper.cpp

changelog.txt

@@ -1,3 +1,15 @@
+2.5.4 beta (07.01.21)
+
+- Implement new audio module code for calls and voice chats.
+- Allow retracting votes from polls in comments to channel posts.
+- Show small voice chat button for empty voice chats.
+- Fix media viewer updating when screen resolution is changed.
+
+2.5.3 beta (30.12.20)
+
+- Allow using mouse buttons in Push-to-Talk shortcut.
+- Fix blurred thumbnails in Shared Links section.
+
 2.5.2 beta (25.12.20)
 
 - Fix possible crash in video calls.

docs/building-xcode.md

@@ -68,17 +68,8 @@ Go to ***BuildPath*** and run
     cd build
     CFLAGS="$UNGUARDED" CPPFLAGS="$UNGUARDED" cmake -D CMAKE_OSX_DEPLOYMENT_TARGET:STRING=10.12 -D CMAKE_INSTALL_PREFIX:STRING=/usr/local/macos ..
     make $MAKE_THREADS_CNT
-    cd ../..
-
-    xz_ver=5.2.4
-    wget https://tukaani.org/xz/xz-$xz_ver.tar.gz
-    tar -xvzf xz-$xz_ver.tar.gz
-    rm xz-$xz_ver.tar.gz
-    cd xz-$xz_ver
-    CFLAGS="$MIN_VER" LDFLAGS="$MIN_VER" ./configure --prefix=/usr/local/macos
-    make $MAKE_THREADS_CNT
     sudo make install
-    cd ..
+    cd ../..
 
     git clone https://github.com/desktop-app/zlib.git
     cd zlib

snap/snapcraft.yaml

@@ -74,6 +74,7 @@ parts:
       - libasound2-dev
       - libglib2.0-dev
       - libgtk-3-dev
+      - libkf5wayland-dev
       - liblzma-dev
       - libopus-dev
       - libpulse-dev
@@ -90,6 +91,7 @@ parts:
       - libasound2
       - libglib2.0-0
       - libgtk-3-0
+      - libkf5waylandclient5
       - liblzma5
       - libopus0
       - libpulse0
@@ -251,7 +253,7 @@ parts:
   webrtc:
     source: https://github.com/desktop-app/tg_owt.git
     source-depth: 1
-    source-commit: 75ac66937341d8a9207375aaee79b4bdc500146c
+    source-commit: d91d618889cc743aafd809151449012de62e5327
     plugin: cmake
     build-packages:
       - yasm