comparison widgets/UnitConverter.cpp @ 891:09b2940f483a

Update units when prefs change

     grid->addWidget(new QLabel(tr("MIDI pitch")), row, 2, 1, 2);
     grid->addWidget(m_midi, row, 4);
     
     ++row;
 
-    grid->addWidget
-	(new QLabel(tr("With concert A tuning frequency at %1 Hz, and "
-		       "middle C residing in octave %2.\n"
-		       "(These can be changed in the application preferences.)")
-		    .arg(Preferences::getInstance()->getTuningFrequency())
-		    .arg(Preferences::getInstance()->getOctaveOfMiddleC())),
-	 row, 0, 1, 9);
+    m_pitchPrefsLabel = new QLabel;
+    grid->addWidget(m_pitchPrefsLabel, row, 0, 1, 9);
 
     ++row;
     
     grid->addWidget
 	(new QLabel(tr("Note that only pitches in the range 0 to 127 are valid "
 		       "in the MIDI protocol.")),
 	 row, 0, 1, 9);
 
     ++row;
-
+    
+    frame = new QFrame;
+    tabs->addTab(frame, tr("Tempo"));
+    
+    grid = new QGridLayout;
+    frame->setLayout(grid);
+
+    connect(Preferences::getInstance(),
+	    SIGNAL(propertyChanged(PropertyContainer::PropertyName)),
+	    this, SLOT(preferenceChanged(PropertyContainer::PropertyName)));
+    
     updatePitchesFromFreq();
+    updatePitchPrefsLabel();
+    updateTempiFromSamples();
 }
 
 UnitConverter::~UnitConverter()
 {
+}
+
+void
+UnitConverter::preferenceChanged(PropertyContainer::PropertyName)
+{
+    updatePitchesFromFreq();
+    updatePitchPrefsLabel();
+}
+
+void
+UnitConverter::updatePitchPrefsLabel()
+{
+    m_pitchPrefsLabel->setText
+	(tr("With concert-A tuning frequency at %1 Hz, and "
+	    "middle C residing in octave %2.\n"
+	    "(These can be changed in the application preferences.)")
+	 .arg(Preferences::getInstance()->getTuningFrequency())
+	 .arg(Preferences::getInstance()->getOctaveOfMiddleC()));
 }
 
 void
 UnitConverter::freqChanged(double freq)
 {

     m_cents->blockSignals(false);
     m_note->blockSignals(false);
     m_octave->blockSignals(false);
 }
 
-
+void
+UnitConverter::updateTempiFromSamples()
+{
+}