show number of connected clients in window title bar

src/audiomixerboard.cpp

@@ -346,22 +346,28 @@ void CAudioMixerBoard::SetGUIDesign ( const EGUIDesign eNewDesign )
 
 void CAudioMixerBoard::HideAll()
 {
-    // make old controls invisible
+    // make all controls invisible
     for ( int i = 0; i < USED_NUM_CHANNELS; i++ )
     {
         vecpChanFader[i]->Hide();
     }
+
+    // emit status of connected clients
+    emit NumClientsChanged ( 0 ); // -> no clients connected
 }
 
 void CAudioMixerBoard::ApplyNewConClientList ( CVector<CChannelShortInfo>& vecChanInfo )
 {
+    // get number of connected clients
+    const int iNumConnectedClients = vecChanInfo.Size();
+
     // search for channels with are already present and preserver their gain
     // setting, for all other channels, reset gain
     for ( int i = 0; i < USED_NUM_CHANNELS; i++ )
     {
         bool bFaderIsUsed = false;
 
-        for ( int j = 0; j < vecChanInfo.Size(); j++ )
+        for ( int j = 0; j < iNumConnectedClients; j++ )
         {
             // check if current fader is used
             if ( vecChanInfo[j].iChanID == i )
@@ -395,6 +401,9 @@ void CAudioMixerBoard::ApplyNewConClientList ( CVector<CChannelShortInfo>& vecCh
             vecpChanFader[i]->Hide();
         }
     }
+
+    // emit status of connected clients
+    emit NumClientsChanged ( iNumConnectedClients );
 }
 
 void CAudioMixerBoard::OnChSoloStateChanged ( const int iChannelIdx, const int iValue )

src/audiomixerboard.h

@@ -137,6 +137,7 @@ public slots:
 
 signals:
     void ChangeChanGain ( int iId, double dGain );
+    void NumClientsChanged ( int iNewNumClients );
 };
 
 #endif // MIXERBOARD_H__FD6B49E1606C2AC__INCLUDED_

src/llconclientdlg.cpp

@@ -138,6 +138,9 @@ CLlconClientDlg::CLlconClientDlg ( CClient*        pNCliP,
     // init GUI design
     SetGUIDesign ( pClient->GetGUIDesign() );
 
+    // reset mixer board
+    MainMixerBoard->HideAll();
+
     // init fader tag line edit
     LineEditFaderTag->setText ( pClient->strName );
 
@@ -294,6 +297,9 @@ CLlconClientDlg::CLlconClientDlg ( CClient*        pNCliP,
     QObject::connect ( MainMixerBoard, SIGNAL ( ChangeChanGain ( int, double ) ),
         this, SLOT ( OnChangeChanGain ( int, double ) ) );
 
+    QObject::connect ( MainMixerBoard, SIGNAL ( NumClientsChanged ( int ) ),
+        this, SLOT ( OnNumClientsChanged ( int ) ) );
+
     QObject::connect ( &ChatDlg, SIGNAL ( NewLocalInputText ( QString ) ),
         this, SLOT ( OnNewLocalInputText ( QString ) ) );
 
@@ -435,6 +441,41 @@ void CLlconClientDlg::OnDisconnected()
     MainMixerBoard->HideAll();
 }
 
+void CLlconClientDlg::OnConClientListMesReceived ( CVector<CChannelShortInfo> vecChanInfo )
+{
+    // update mixer board
+    MainMixerBoard->ApplyNewConClientList ( vecChanInfo );
+}
+
+void CLlconClientDlg::OnNumClientsChanged ( int iNewNumClients )
+{
+    // update window title
+    SetMyWindowTitle ( iNewNumClients );
+}
+
+void CLlconClientDlg::SetMyWindowTitle ( const int iNumClients )
+{
+    // show number of connected clients in window title (and therefore also in
+    // the task bar of the OS)
+    if ( iNumClients == 0 )
+    {
+        // only application name
+        setWindowTitle ( APP_NAME );
+    }
+    else
+    {
+        if ( iNumClients == 1 )
+        {
+            setWindowTitle ( QString ( APP_NAME ) + " (1 client)" );
+        }
+        else
+        {
+            setWindowTitle ( QString ( APP_NAME ) +
+                QString ( " (%1 clients)" ).arg ( iNumClients ) );
+        }
+    }
+}
+
 void CLlconClientDlg::ShowChatWindow()
 {
     // open chat dialog

src/llconclientdlg.h

@@ -72,6 +72,7 @@ public:
 
 protected:
     void                    SetGUIDesign ( const EGUIDesign eNewDesign );
+    void                    SetMyWindowTitle ( const int iNumClients );
     void                    ShowChatWindow();
     void                    UpdateAudioFaderSlider();
     void                    ConnectDisconnect ( const bool bDoStart );
@@ -102,8 +103,7 @@ public slots:
     void OnSliderAudReverb ( int value ) { pClient->SetReverbLevel ( value ); }
     void OnRevSelL() { pClient->SetReverbOnLeftChan ( true ); }
     void OnRevSelR() { pClient->SetReverbOnLeftChan ( false ); }
-    void OnConClientListMesReceived ( CVector<CChannelShortInfo> vecChanInfo )
-        { MainMixerBoard->ApplyNewConClientList ( vecChanInfo ); }
+    void OnConClientListMesReceived ( CVector<CChannelShortInfo> vecChanInfo );
     void OnChangeChanGain ( int iId, double dGain )
         { pClient->SetRemoteChanGain ( iId, dGain ); }
     void OnFaderTagTextChanged ( const QString& strNewName );
@@ -115,4 +115,5 @@ public slots:
     void OnDisconnected();
     void OnStopped();
     void OnGUIDesignChanged() { SetGUIDesign ( pClient->GetGUIDesign() ); }
+    void OnNumClientsChanged ( int iNewNumClients );
 };