Show green stream watch buttons only for active streams

tools/chatgui-android/app/src/main/java/com/utun/chat/ui/screens/ChatScreen.kt

@@ -107,6 +107,11 @@ fun ChatScreen(
     val streams by viewModel.streamSources.collectAsState()
     val watchSources = streams.filterNot { it.self }
     var chooseStream by remember(channel.id) { mutableStateOf(false) }
+    LaunchedEffect(channel.id, watchSources.size, streams.size) {
+        if (watchSources.isEmpty()) chooseStream = false
+        LogManager.addLog("INFO", "stream", "watch stream header channel=${channel.id} remote=${watchSources.size} " +
+            "ownExcluded=${streams.size - watchSources.size} visible=${watchSources.isNotEmpty()}")
+    }
     if (chooseStream) AlertDialog(
         onDismissRequest = { chooseStream = false },
         title = { Text(stringResource(R.string.stream_choose_source)) },
@@ -201,13 +206,13 @@ fun ChatScreen(
                 IconButton(onClick = onBack) { Icon(Icons.AutoMirrored.Filled.ArrowBack, stringResource(R.string.back)) }
             },
             actions = {
-                IconButton(onClick = {
+                if (watchSources.isNotEmpty()) IconButton(onClick = {
                     LogManager.addLog("INFO", "stream", "stream chooser channel=${channel.id} " +
                         "remote=${watchSources.size} ownExcluded=${streams.size - watchSources.size}")
                     chooseStream = true
                 }) {
                     BadgedBox(badge = { if (watchSources.size > 1) Badge { Text(watchSources.size.toString()) } }) {
-                        Icon(Icons.Filled.LiveTv, stringResource(R.string.stream_available, watchSources.size), tint = Color(0xFFE53935))
+                        Icon(Icons.Filled.LiveTv, stringResource(R.string.stream_available, watchSources.size), tint = Color(0xFF4CAF50))
                     }
                 }
                 OwnStreamButton("channel=${channel.id}", onOwnStream)

tools/chatgui/src/messagelist.cpp

@@ -492,9 +492,9 @@ MessageList::MessageList(DbManager* db, AudioRecorder* recorder, QWidget *parent
 
         m_streamBtn = new QPushButton(header); m_streamBtn->setObjectName("streamButton");
         QPixmap streamIcon(24, 24); streamIcon.fill(Qt::transparent);
-        { QPainter painter(&streamIcon); painter.setRenderHint(QPainter::Antialiasing); painter.setPen(QPen(QColor("#e53935"), 2));
+        { QPainter painter(&streamIcon); painter.setRenderHint(QPainter::Antialiasing); painter.setPen(QPen(QColor("#4caf50"), 2));
           painter.drawRoundedRect(QRectF(2, 6, 20, 14), 2, 2); painter.drawLine(8, 1, 12, 5); painter.drawLine(16, 1, 12, 5);
-          painter.setBrush(QColor("#e53935")); painter.drawEllipse(QPointF(12, 13), 3, 3); }
+          painter.setBrush(QColor("#4caf50")); painter.drawEllipse(QPointF(12, 13), 3, 3); }
         m_streamBtn->setIcon(QIcon(streamIcon)); m_streamBtn->setIconSize(QSize(24, 24)); m_streamBtn->hide();
         m_streamBtn->setAccessibleName(QCoreApplication::translate("ChatGui", "Live streams"));
         m_streamBtn->setCursor(Qt::PointingHandCursor);
@@ -1588,8 +1588,9 @@ void MessageList::watchStreams() {
 
 void MessageList::clearStreams() {
     m_streamSources.clear(); m_streamBtn->setText(QString());
-    m_streamBtn->setVisible(!isDmChannel(m_currentChannelId) && m_currentChannelId.toULongLong() != 0);
+    m_streamBtn->hide();
     m_streamBtn->setToolTip(QCoreApplication::translate("ChatGui", "Live streams"));
+    DEBUG_INFO(DEBUG_CATEGORY_STREAM, "desktop stream header cleared channel=%s visible=0", qPrintable(m_currentChannelId));
 }
 
 /* Кнопка следует за локальным publisher, а не за запаздывающим/недоступным сетевым каталогом. */
@@ -1611,12 +1612,13 @@ void MessageList::onStreamSources(const uint8_t* data, int len) {
     if (!snapshot.valid) {
         DEBUG_WARN(DEBUG_CATEGORY_STREAM, "desktop source catalogue unavailable group=%llx", (unsigned long long)group); return;
     }
-    m_streamSources = std::move(snapshot.sources); m_streamBtn->show();
+    m_streamSources = std::move(snapshot.sources);
     const auto remote = std::count_if(m_streamSources.begin(), m_streamSources.end(), [](const LiveStreamSource& source) { return !source.self; });
+    m_streamBtn->setVisible(remote > 0);
     m_streamBtn->setText(remote > 1 ? QString::number(remote) : QString());
     m_streamBtn->setToolTip(QCoreApplication::translate("ChatGui", "Live streams: %1").arg(remote));
-    DEBUG_INFO(DEBUG_CATEGORY_STREAM, "desktop stream header group=%llx sources=%d remote=%d",
-               (unsigned long long)group, (int)m_streamSources.size(), (int)remote);
+    DEBUG_INFO(DEBUG_CATEGORY_STREAM, "desktop stream header group=%llx sources=%d remote=%d visible=%d",
+               (unsigned long long)group, (int)m_streamSources.size(), (int)remote, remote > 0);
 }
 
 bool MessageList::enableRadio() {