implemented solo-buttons for FxMixer - resolving #1211

src/core/FxMixer.cpp

@@ -65,6 +65,7 @@ FxChannel::FxChannel( int idx, Model * _parent ) :
 	m_peakRight( 0.0f ),
 	m_buffer( new sampleFrame[engine::mixer()->framesPerPeriod()] ),
 	m_muteModel( false, _parent ),
+	m_soloModel( false, _parent ),
 	m_volumeModel( 1.0, 0.0, 2.0, 0.001, _parent ),
 	m_name(),
 	m_lock(),
@@ -85,6 +86,13 @@ FxChannel::~FxChannel()
 
 
 
+void FxChannel::unmuteForSolo()
+{
+	//TODO: Recursively activate every channel, this channel sends to
+	m_muteModel.setValue(false);
+}
+
+
 
 void FxChannel::doProcessing( sampleFrame * _buf )
 {
@@ -175,6 +183,7 @@ FxMixer::FxMixer() :
 {
 	// create master channel
 	createChannel();
+	m_lastSoloed = -1;
 }
 
 
@@ -205,6 +214,57 @@ int FxMixer::createChannel()
 	return index;
 }
 
+void FxMixer::activateSolo()
+{
+	for (int i = 0; i < m_fxChannels.size(); ++i)
+	{
+		m_fxChannels[i]->m_muteBeforeSolo = m_fxChannels[i]->m_muteModel.value();
+		m_fxChannels[i]->m_muteModel.setValue(true);
+	}
+}
+
+void FxMixer::deactivateSolo()
+{
+	for (int i = 0; i < m_fxChannels.size(); ++i)
+	{
+		m_fxChannels[i]->m_muteModel.setValue(m_fxChannels[i]->m_muteBeforeSolo);
+	}
+}
+
+void FxMixer::toggledSolo()
+{
+	int soloedChan = -1;
+	bool resetSolo = m_lastSoloed != -1;
+	//untoggle if lastsoloed is entered
+	if (resetSolo)
+	{
+		m_fxChannels[m_lastSoloed]->m_soloModel.setValue(false);
+	}
+	//determine the soloed channel
+	for (int i = 0; i < m_fxChannels.size(); ++i)
+	{
+		if (m_fxChannels[i]->m_soloModel.value() == true)
+			soloedChan = i;
+	}
+	// if no channel is soloed, unmute everything, else mute everything
+	if (soloedChan != -1)
+	{
+		if (resetSolo)
+		{
+			this->deactivateSolo();
+			this->activateSolo();
+		} else {
+			this->activateSolo();
+		}
+		// unmute the soloed chan and every channel it sends to
+		m_fxChannels[soloedChan]->unmuteForSolo();
+	} else {
+		this->deactivateSolo();
+	}
+	m_lastSoloed = soloedChan;
+}
+
+
 
 void FxMixer::deleteChannel( int index )
 {
@@ -568,6 +628,7 @@ void FxMixer::clearChannel(fx_ch_t index)
 	ch->m_fxChain.clear();
 	ch->m_volumeModel.setValue( 1.0f );
 	ch->m_muteModel.setValue( false );
+	ch->m_soloModel.setValue( false );
 	ch->m_name = ( index == 0 ) ? tr( "Master" ) : tr( "FX %1" ).arg( index );
 	ch->m_volumeModel.setDisplayName( ch->m_name );
 
@@ -604,6 +665,7 @@ void FxMixer::saveSettings( QDomDocument & _doc, QDomElement & _this )
 		ch->m_fxChain.saveState( _doc, fxch );
 		ch->m_volumeModel.saveSettings( _doc, fxch, "volume" );
 		ch->m_muteModel.saveSettings( _doc, fxch, "muted" );
+		ch->m_soloModel.saveSettings( _doc, fxch, "soloed" );
 		fxch.setAttribute( "num", i );
 		fxch.setAttribute( "name", ch->m_name );
 
@@ -650,6 +712,7 @@ void FxMixer::loadSettings( const QDomElement & _this )
 
 		m_fxChannels[num]->m_volumeModel.loadSettings( fxch, "volume" );
 		m_fxChannels[num]->m_muteModel.loadSettings( fxch, "muted" );
+		m_fxChannels[num]->m_soloModel.loadSettings( fxch, "soloed" );
 		m_fxChannels[num]->m_name = fxch.attribute( "name" );
 
 		m_fxChannels[num]->m_fxChain.restoreState( fxch.firstChildElement(

src/gui/FxMixerView.cpp

@@ -192,6 +192,7 @@ void FxMixerView::refreshDisplay()
 		chLayout->removeWidget(m_fxChannelViews[i]->m_fxLine);
 		delete m_fxChannelViews[i]->m_fader;
 		delete m_fxChannelViews[i]->m_muteBtn;
+		delete m_fxChannelViews[i]->m_soloBtn;
 		delete m_fxChannelViews[i]->m_fxLine;
 		delete m_fxChannelViews[i];
 		m_racksLayout->removeWidget( m_fxChannelViews[i]->m_rackView );
@@ -276,8 +277,20 @@ FxMixerView::FxChannelView::FxChannelView(QWidget * _parent, FxMixerView * _mv,
 	m_muteBtn->setInactiveGraphic(
 				embed::getIconPixmap( "led_green" ) );
 	m_muteBtn->setCheckable( true );
-	m_muteBtn->move( 9,  m_fader->y()-16);
+	m_muteBtn->move( 9,  m_fader->y()-11);
 	toolTip::add( m_muteBtn, tr( "Mute this FX channel" ) );
+
+	m_soloBtn = new pixmapButton( m_fxLine, tr( "Solo" ) );
+	m_soloBtn->setModel( &m->effectChannel(_chIndex)->m_soloModel );
+	m_soloBtn->setActiveGraphic(
+				embed::getIconPixmap( "led_red" ) );
+	m_soloBtn->setInactiveGraphic(
+				embed::getIconPixmap( "led_off" ) );
+	m_soloBtn->setCheckable( true );
+	m_soloBtn->move( 9,  m_fader->y()-21);
+	connect(&m->effectChannel(_chIndex)->m_soloModel, SIGNAL( dataChanged() ),
+			_mv, SLOT ( toggledSolo() ) );
+	toolTip::add( m_soloBtn, tr( "Solo FX channel" ) );
 	
 	// Create EffectRack for the channel
 	m_rackView = new EffectRackView( &m->effectChannel(_chIndex)->m_fxChain, _mv->m_racksWidget );
@@ -285,6 +298,13 @@ FxMixerView::FxChannelView::FxChannelView(QWidget * _parent, FxMixerView * _mv,
 }
 
 
+void FxMixerView::toggledSolo()
+{
+	engine::fxMixer()->toggledSolo();
+}
+
+
+
 void FxMixerView::setCurrentFxLine( FxLine * _line )
 {
 	// select
@@ -341,6 +361,7 @@ void FxMixerView::deleteChannel(int index)
 	chLayout->removeWidget(m_fxChannelViews[index]->m_fxLine);
 	delete m_fxChannelViews[index]->m_fader;
 	delete m_fxChannelViews[index]->m_muteBtn;
+	delete m_fxChannelViews[index]->m_soloBtn;
 	delete m_fxChannelViews[index]->m_fxLine;
 	delete m_fxChannelViews[index];
 	m_channelAreaWidget->adjustSize();
@@ -389,6 +410,7 @@ void FxMixerView::moveChannelLeft(int index)
 		chLayout->removeWidget(m_fxChannelViews[i]->m_fxLine);
 		delete m_fxChannelViews[i]->m_fader;
 		delete m_fxChannelViews[i]->m_muteBtn;
+		delete m_fxChannelViews[i]->m_soloBtn;
 		delete m_fxChannelViews[i]->m_fxLine;
 		delete m_fxChannelViews[i];
 		m_racksLayout->removeWidget( m_fxChannelViews[i]->m_rackView );