Add some error tooltips in group calls.

Telegram/Resources/langs/lang.strings

@@ -2004,8 +2004,6 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 "lng_group_call_screen_share_stop" = "Stop Sharing";
 "lng_group_call_screen_title" = "Screen {index}";
 "lng_group_call_unmute_small" = "Unmute";
-"lng_group_call_you_are_live_small" = "Mute";
-"lng_group_call_force_muted_small" = "Muted";
 "lng_group_call_more" = "More";
 "lng_group_call_unmute" = "Unmute";
 "lng_group_call_unmute_sub" = "or hold spacebar to talk";
@@ -2014,7 +2012,6 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 "lng_group_call_force_muted_sub" = "You are in Listen Only mode";
 "lng_group_call_raise_hand_tip" = "Click if you want to speak";
 "lng_group_call_raised_hand" = "You asked to speak";
-"lng_group_call_raised_hand_small" = "Raised hand";
 "lng_group_call_raised_hand_sub" = "We let the speakers know";
 "lng_group_call_connecting" = "Connecting...";
 "lng_group_call_leave" = "Leave";
@@ -2027,6 +2024,17 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 "lng_group_call_create_sure" = "Do you really want to start a voice chat in this group?";
 "lng_group_call_create_sure_channel" = "Are you sure you want to start a voice chat in this channel as your personal account?";
 "lng_group_call_join_sure_personal" = "Are you sure you want to join this voice chat as your personal account?";
+"lng_group_call_muted_no_camera" = "You can't turn on video while you're muted by admin.";
+"lng_group_call_muted_no_screen" = "You can't share your screen while you're muted by admin.";
+"lng_group_call_chat_no_camera" = "You can't turn on video in this chat.";
+"lng_group_call_chat_no_screen" = "You can't share your screen in this chat.";
+"lng_group_call_failed_screen" = "An error occured. Screencast has stopped.";
+"lng_group_call_tooltip_screen" = "Share screen";
+"lng_group_call_tooltip_camera" = "Your camera is off. Click here to enable camera.";
+"lng_group_call_tooltip_microphone" = "You are on mute. Click here to speak.";
+"lng_group_call_tooltip_camera_off" = "Disable camera";
+"lng_group_call_tooltip_force_muted" = "Muted by admin. Click if you want to speak.";
+"lng_group_call_tooltip_raised_hand" = "You asked to speak. We let the speakers know.";
 "lng_group_call_also_end" = "End voice chat";
 "lng_group_call_settings_title" = "Settings";
 "lng_group_call_invite" = "Invite Member";

Telegram/SourceFiles/calls/group/calls_group_call.cpp

@@ -457,8 +457,7 @@ GroupCall::~GroupCall() {
 }
 
 bool GroupCall::isSharingScreen() const {
-	return _screenOutgoing
-		&& (_screenOutgoing->state() == Webrtc::VideoState::Active);
+	return _isSharingScreen.current();
 }
 
 rpl::producer<bool> GroupCall::isSharingScreenValue() const {
@@ -470,8 +469,7 @@ const std::string &GroupCall::screenSharingEndpoint() const {
 }
 
 bool GroupCall::isSharingCamera() const {
-	return _cameraOutgoing
-		&& (_cameraOutgoing->state() == Webrtc::VideoState::Active);
+	return _isSharingCamera.current();
 }
 
 rpl::producer<bool> GroupCall::isSharingCameraValue() const {
@@ -507,12 +505,9 @@ void GroupCall::toggleVideo(bool active) {
 		return;
 	}
 	ensureOutgoingVideo();
-	const auto state = active
+	_cameraOutgoing->setState(active
 		? Webrtc::VideoState::Active
-		: Webrtc::VideoState::Inactive;
-	if (_cameraOutgoing->state() != state) {
-		_cameraOutgoing->setState(state);
-	}
+		: Webrtc::VideoState::Inactive);
 }
 
 void GroupCall::toggleScreenSharing(std::optional<QString> uniqueId) {
@@ -529,9 +524,7 @@ void GroupCall::toggleScreenSharing(std::optional<QString> uniqueId) {
 	}
 	const auto changed = (_screenDeviceId != *uniqueId);
 	_screenDeviceId = *uniqueId;
-	if (_screenOutgoing->state() != Webrtc::VideoState::Active) {
-		_screenOutgoing->setState(Webrtc::VideoState::Active);
-	}
+	_screenOutgoing->setState(Webrtc::VideoState::Active);
 	if (changed) {
 		_screenCapture->switchToDevice(uniqueId->toStdString());
 	}
@@ -1110,6 +1103,9 @@ void GroupCall::rejoinPresentation() {
 					LOG(("Call Error: "
 						"Could not screen join, error: %1").arg(type));
 					_screenOutgoing->setState(Webrtc::VideoState::Inactive);
+					_errors.fire_copy(mutedByAdmin()
+						? Error::MutedNoScreen
+						: Error::ScreenFailed);
 				}
 			}).send();
 		});
@@ -1669,6 +1665,48 @@ void GroupCall::setupMediaDevices() {
 	}, _lifetime);
 }
 
+bool GroupCall::emitShareCameraError() {
+	const auto emitError = [=](Error error) {
+		emitShareCameraError(error);
+		return true;
+	};
+	if (const auto real = lookupReal(); real && !real->canStartVideo()) {
+		return emitError(Error::DisabledNoCamera);
+	} else if (mutedByAdmin()) {
+		return emitError(Error::MutedNoCamera);
+	} else if (Webrtc::GetVideoInputList().empty()) {
+		return emitError(Error::NoCamera);
+	}
+	return false;
+}
+
+void GroupCall::emitShareCameraError(Error error) {
+	if (_cameraOutgoing) {
+		_cameraOutgoing->setState(Webrtc::VideoState::Inactive);
+	}
+	_errors.fire_copy(error);
+}
+
+bool GroupCall::emitShareScreenError() {
+	const auto emitError = [=](Error error) {
+		emitShareScreenError(error);
+		return true;
+	};
+	if (const auto real = lookupReal(); real && !real->canStartVideo()) {
+		return emitError(Error::DisabledNoScreen);
+	} else if (mutedByAdmin()) {
+		return emitError(Error::MutedNoScreen);
+	}
+	return false;
+}
+
+void GroupCall::emitShareScreenError(Error error) {
+	if (_screenOutgoing) {
+		_screenOutgoing->setState(Webrtc::VideoState::Inactive);
+	}
+	_errors.fire_copy(error);
+}
+
 void GroupCall::ensureOutgoingVideo() {
 	Expects(_id != 0);
 
@@ -1682,33 +1720,21 @@ void GroupCall::ensureOutgoingVideo() {
 		Webrtc::VideoState::Inactive,
 		_requireARGB32);
 
-	using namespace rpl::mappers;
-	_isSharingCamera = _cameraOutgoing->stateValue(
-	) | rpl::map(_1 == Webrtc::VideoState::Active);
-	_isSharingScreen = _screenOutgoing->stateValue(
-	) | rpl::map(_1 == Webrtc::VideoState::Active);
-
-	//static const auto hasDevices = [] {
-	//	return !Webrtc::GetVideoInputList().empty();
-	//};
 	_cameraOutgoing->stateValue(
 	) | rpl::start_with_next([=](Webrtc::VideoState state) {
-		//if (state != Webrtc::VideoState::Inactive && !hasDevices()) {
-			//_errors.fire({ ErrorType::NoCamera }); // #TODO calls
-			//_videoOutgoing->setState(Webrtc::VideoState::Inactive);
-		//} else if (state != Webrtc::VideoState::Inactive
-		//	&& _instance
-		//	&& !_instance->supportsVideo()) {
-		//	_errors.fire({ ErrorType::NotVideoCall });
-		//	_videoOutgoing->setState(Webrtc::VideoState::Inactive);
-		/*} else */if (state != Webrtc::VideoState::Inactive) {
+		const auto active = (state != Webrtc::VideoState::Inactive);
+		if (active) {
 			// Paused not supported right now.
 			Assert(state == Webrtc::VideoState::Active);
-			if (!_cameraCapture) {
+			if (emitShareCameraError()) {
+				return;
+			} else if (!_cameraCapture) {
 				_cameraCapture = _delegate->groupCallGetVideoCapture(
 					_cameraInputId);
 				if (!_cameraCapture) {
+					return emitShareCameraError(Error::NoCamera);
 					_cameraOutgoing->setState(Webrtc::VideoState::Inactive);
+					_errors.fire_copy(Error::NoCamera);
 					return;
 				}
 			} else {
@@ -1721,31 +1747,33 @@ void GroupCall::ensureOutgoingVideo() {
 		} else if (_cameraCapture) {
 			_cameraCapture->setState(tgcalls::VideoState::Inactive);
 		}
-		markEndpointActive({ _joinAs, _cameraEndpoint }, isSharingCamera());
+		_isSharingCamera = active;
+		markEndpointActive({ _joinAs, _cameraEndpoint }, active);
 		sendSelfUpdate(SendUpdateType::VideoMuted);
 		applyMeInCallLocally();
 	}, _lifetime);
 
 	_screenOutgoing->stateValue(
 	) | rpl::start_with_next([=](Webrtc::VideoState state) {
-		if (state != Webrtc::VideoState::Inactive) {
+		const auto active = (state != Webrtc::VideoState::Inactive);
+		if (active) {
 			// Paused not supported right now.
 			Assert(state == Webrtc::VideoState::Active);
-			if (!_screenCapture) {
-				_screenCapture = std::shared_ptr<tgcalls::VideoCaptureInterface>(
-					tgcalls::VideoCaptureInterface::Create(
-						tgcalls::StaticThreads::getThreads(),
-						_screenDeviceId.toStdString()));
+			if (emitShareScreenError()) {
+				return;
+			} else if (!_screenCapture) {
+				_screenCapture = std::shared_ptr<
+					tgcalls::VideoCaptureInterface
+				>(tgcalls::VideoCaptureInterface::Create(
+					tgcalls::StaticThreads::getThreads(),
+					_screenDeviceId.toStdString()));
 				if (!_screenCapture) {
-					_screenOutgoing->setState(Webrtc::VideoState::Inactive);
-					return;
+					return emitShareScreenError(Error::ScreenFailed);
 				}
 				const auto weak = base::make_weak(this);
 				_screenCapture->setOnFatalError([=] {
 					crl::on_main(weak, [=] {
-						_screenOutgoing->setState(
-							Webrtc::VideoState::Inactive);
-						// #TODO calls show error toast, receive here device.
+						emitShareScreenError(Error::ScreenFailed);
 					});
 				});
 			} else {
@@ -1758,7 +1786,8 @@ void GroupCall::ensureOutgoingVideo() {
 		} else if (_screenCapture) {
 			_screenCapture->setState(tgcalls::VideoState::Inactive);
 		}
-		markEndpointActive({ _joinAs, _screenEndpoint }, isSharingScreen());
+		_isSharingScreen = active;
+		markEndpointActive({ _joinAs, _screenEndpoint }, active);
 		_screenJoinState.nextActionPending = true;
 		checkNextJoinAction();
 	}, _lifetime);
@@ -2457,8 +2486,7 @@ void GroupCall::sendSelfUpdate(SendUpdateType type) {
 		MTP_bool(muted() != MuteState::Active),
 		MTP_int(100000), // volume
 		MTP_bool(muted() == MuteState::RaisedHand),
-		MTP_bool(!_cameraOutgoing
-			|| _cameraOutgoing->state() != Webrtc::VideoState::Active)
+		MTP_bool(!isSharingCamera())
 	)).done([=](const MTPUpdates &result) {
 		_updateMuteRequestId = 0;
 		_peer->session().api().applyUpdates(result);

Telegram/SourceFiles/calls/group/calls_group_call.h

@@ -48,6 +48,7 @@ struct ParticipantState;
 struct JoinInfo;
 struct RejoinEvent;
 enum class VideoQuality;
+enum class Error;
 } // namespace Group
 
 enum class MuteState {
@@ -225,6 +226,13 @@ public:
 	void startScheduledNow();
 	void toggleScheduleStartSubscribed(bool subscribed);
 
+	bool emitShareScreenError();
+	bool emitShareCameraError();
+
+	[[nodiscard]] rpl::producer<Group::Error> errors() const {
+		return _errors.events();
+	}
+
 	void addVideoOutput(
 		const std::string &endpoint,
 		not_null<Webrtc::VideoTrack*> track);
@@ -367,6 +375,7 @@ public:
 
 private:
 	using GlobalShortcutValue = base::GlobalShortcutValue;
+	using Error = Group::Error;
 	struct SinkPointer;
 
 	static constexpr uint32 kDisabledSsrc = uint32(-1);
@@ -421,6 +430,9 @@ private:
 	bool tryCreateScreencast();
 	void destroyScreencast();
 
+	void emitShareCameraError(Error error);
+	void emitShareScreenError(Error error);
+
 	void setState(State state);
 	void finish(FinishType type);
 	void maybeSendMutedUpdate(MuteState previous);
@@ -490,6 +502,7 @@ private:
 	rpl::event_stream<not_null<Data::GroupCall*>> _realChanges;
 	rpl::variable<State> _state = State::Creating;
 	base::flat_set<uint32> _unresolvedSsrcs;
+	rpl::event_stream<Error> _errors;
 	bool _recordingStoppedByMe = false;
 	bool _requestedVideoChannelsUpdateScheduled = false;
 

Telegram/SourceFiles/calls/group/calls_group_common.h

@@ -59,4 +59,13 @@ enum class VideoQuality {
 	Full,
 };
 
+enum class Error {
+	NoCamera,
+	ScreenFailed,
+	MutedNoCamera,
+	MutedNoScreen,
+	DisabledNoCamera,
+	DisabledNoScreen,
+};
+
 } // namespace Calls::Group

Telegram/SourceFiles/calls/group/calls_group_panel.cpp

@@ -66,6 +66,7 @@ constexpr auto kRecordingOpacity = 0.6;
 constexpr auto kStartNoConfirmation = TimeId(10);
 constexpr auto kControlsBackgroundOpacity = 0.8;
 constexpr auto kOverrideActiveColorBgAlpha = 172;
+constexpr auto kErrorDuration = 2 * crl::time(1000);
 
 class InviteController final : public ParticipantsBoxController {
 public:
@@ -437,9 +438,7 @@ Panel::Panel(not_null<GroupCall*> call)
 	initControls();
 	initLayout();
 	showAndActivate();
-	setupJoinAsChangedToasts();
-	setupTitleChangedToasts();
-	setupAllowedToSpeakToasts();
+	setupToasts();
 }
 
 Panel::~Panel() {
@@ -866,18 +865,12 @@ void Panel::setupRealMuteButtonState(not_null<Data::GroupCall*> real) {
 				: state == GroupCall::InstanceState::Disconnected
 				? tr::lng_group_call_connecting(tr::now)
 				: mute == MuteState::ForceMuted
-				? (wide
-					? tr::lng_group_call_force_muted_small(tr::now)
-					: tr::lng_group_call_force_muted(tr::now))
+				? tr::lng_group_call_force_muted(tr::now)
 				: mute == MuteState::RaisedHand
-				? (wide
-					? tr::lng_group_call_raised_hand_small(tr::now)
-					: tr::lng_group_call_raised_hand(tr::now))
+				? tr::lng_group_call_raised_hand(tr::now)
 				: mute == MuteState::Muted
 				? tr::lng_group_call_unmute(tr::now)
-				: (wide
-					? tr::lng_group_call_you_are_live_small(tr::now)
-					: tr::lng_group_call_you_are_live(tr::now))),
+				: tr::lng_group_call_you_are_live(tr::now)),
 			.subtext = ((scheduleDate || wide)
 				? QString()
 				: state == GroupCall::InstanceState::Disconnected
@@ -1206,6 +1199,14 @@ void Panel::toggleWideControls(bool shown) {
 	});
 }
 
+void Panel::setupToasts() {
+	setupJoinAsChangedToasts();
+	setupTitleChangedToasts();
+	setupRequestedToSpeakToasts();
+	setupAllowedToSpeakToasts();
+	setupErrorToasts();
+}
+
 void Panel::setupJoinAsChangedToasts() {
 	_call->rejoinEvents(
 	) | rpl::filter([](RejoinEvent event) {
@@ -1270,6 +1271,46 @@ void Panel::setupAllowedToSpeakToasts() {
 	}, widget()->lifetime());
 }
 
+void Panel::setupRequestedToSpeakToasts() {
+	_call->mutedValue(
+	) | rpl::combine_previous(
+	) | rpl::start_with_next([=](MuteState was, MuteState now) {
+		if (was == MuteState::ForceMuted && now == MuteState::RaisedHand) {
+			Ui::ShowMultilineToast({
+				.parentOverride = widget(),
+				.text = tr::lng_group_call_tooltip_raised_hand(tr::now),
+			});
+		}
+	}, widget()->lifetime());
+}
+
+void Panel::setupErrorToasts() {
+	_call->errors(
+	) | rpl::start_with_next([=](Error error) {
+		const auto key = [&] {
+			switch (error) {
+			case Error::NoCamera: return tr::lng_call_error_no_camera;
+			case Error::ScreenFailed:
+				return tr::lng_group_call_failed_screen;
+			case Error::MutedNoCamera:
+				return tr::lng_group_call_muted_no_camera;
+			case Error::MutedNoScreen:
+				return tr::lng_group_call_muted_no_screen;
+			case Error::DisabledNoCamera:
+				return tr::lng_group_call_chat_no_camera;
+			case Error::DisabledNoScreen:
+				return tr::lng_group_call_chat_no_screen;
+			}
+			Unexpected("Error in Calls::Group::Panel::setupErrorToasts.");
+		}();
+		Ui::ShowMultilineToast({
+			.parentOverride = widget(),
+			.text = { key(tr::now) },
+			.duration = kErrorDuration,
+		});
+	}, widget()->lifetime());
+}
+
 void Panel::subscribeToChanges(not_null<Data::GroupCall*> real) {
 	const auto validateRecordingMark = [=](bool recording) {
 		if (!recording && _recordingMark) {
@@ -1397,7 +1438,7 @@ void Panel::refreshTopButton() {
 }
 
 void Panel::chooseShareScreenSource() {
-	if (!_call->mutedByAdmin()) {
+	if (!_call->emitShareScreenError()) {
 		Ui::DesktopCapture::ChooseSource(this);
 	}
 }

Telegram/SourceFiles/calls/group/calls_group_panel.h

@@ -87,9 +87,12 @@ private:
 	void setupScheduledLabels(rpl::producer<TimeId> date);
 	void setupMembers();
 	void setupVideo();
+	void setupToasts();
 	void setupJoinAsChangedToasts();
 	void setupTitleChangedToasts();
+	void setupRequestedToSpeakToasts();
 	void setupAllowedToSpeakToasts();
+	void setupErrorToasts();
 	void setupRealMuteButtonState(not_null<Data::GroupCall*> real);
 
 	bool handleClose();