prefer recently used states.

[ardour.git] / gtk2_ardour / volume_controller.h

diff --git a/gtk2_ardour/volume_controller.h b/gtk2_ardour/volume_controller.h
index 3f910ed094df49829671b9432ebef66868468d1e..28877b798700e644b168863d463132b8570b9a34 100644 (file)
--- a/gtk2_ardour/volume_controller.h
+++ b/gtk2_ardour/volume_controller.h
@@ -1,5 +1,5 @@
 /*
-    Copyright (C) 1998-2007 Paul Davis 
+    Copyright (C) 1998-2007 Paul Davis
     This program is free software; you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
     the Free Software Foundation; either version 2 of the License, or
@@ -24,29 +24,37 @@
 
 #include "gtkmm2ext/motionfeedback.h"
 
-// march 2010: this exists as a placeholder to add a controllable, but maybe it will
-// end up in MotionFeedback
-
 class VolumeController : public Gtkmm2ext::MotionFeedback
 {
   public:
        VolumeController (Glib::RefPtr<Gdk::Pixbuf>,
-                         Gtk::Adjustment *adj,
+                         boost::shared_ptr<PBD::Controllable>,
+                         double def,
+                         double step,
+                         double page,
                          bool with_numeric = true,
                           int image_width = 40,
-                          int image_height = 40);
+                          int image_height = 40,
+                         bool linear = true);
 
         virtual ~VolumeController () {}
-        void set_controllable (boost::shared_ptr<PBD::Controllable> c);
+
+       static void _dB_printer (char buf[32], const boost::shared_ptr<PBD::Controllable>& adj, void* arg);
+
+  protected:
+       double to_control_value (double);
+       double to_display_value (double);
+       double adjust (double nominal_delta);
+
+       double display_value () const;
+       double control_value () const;
 
   private:
-       Gtk::Adjustment *adjustment;
-        PBD::ScopedConnection controllable_connection;
+       bool _linear;
 
-       void adjustment_value_changed ();
-       void controllable_value_changed ();
+       void dB_printer (char buf[32], const boost::shared_ptr<PBD::Controllable>& adj);
 };
 
-#endif // __gtk_ardour_vol_controller_h__              
+#endif // __gtk_ardour_vol_controller_h__