comparison view/View.cpp @ 133:9e6b3e239b9d

* Add zoom thumbwheels to Pane.  Implement horizontal thumbwheel, and
  vertical depending on layer type (supported for waveform and spectrogram,
  though wrong for log-scale spectrogram at the moment).
* Add bare bones of a spectrum layer.
* Add window icon
* Add shortcut for "insert time instant" on laptops without keypad enter (";")
* Delete FFT processing thread when it exits (at least, next time we're asked
  for something interesting)
* Get audio file extensions from the file readers, and thus from libsndfile for
  the wave file reader -- leads to rather a wide combo box in file dialog though
* Better refresh order for spectrogram (redraw centre section first)

 
 void
 View::toolModeChanged()
 {
 //    std::cerr << "View::toolModeChanged(" << m_manager->getToolMode() << ")" << std::endl;
+}
+
+void
+View::overlayModeChanged()
+{
+    update();
+}
+
+void
+View::zoomWheelsEnabledChanged()
+{
+    // subclass might override this
 }
 
 long
 View::getStartFrame() const
 {

     connect(m_manager, SIGNAL(selectionChanged()),
 	    this, SLOT(selectionChanged()));
     connect(m_manager, SIGNAL(inProgressSelectionChanged()),
 	    this, SLOT(selectionChanged()));
     connect(m_manager, SIGNAL(overlayModeChanged()),
-            this, SLOT(update()));
+            this, SLOT(overlayModeChanged()));
+    connect(m_manager, SIGNAL(zoomWheelsEnabledChanged()),
+            this, SLOT(zoomWheelsEnabledChanged()));
 
     connect(this, SIGNAL(centreFrameChanged(void *, unsigned long, bool)),
 	    m_manager, SIGNAL(centreFrameChanged(void *, unsigned long, bool)));
     connect(this, SIGNAL(zoomLevelChanged(void *, unsigned long, bool)),
 	    m_manager, SIGNAL(zoomLevelChanged(void *, unsigned long, bool)));