1 #ifndef __pbd_controllable_h__
2 #define __pbd_controllable_h__
6 #include <sigc++/trackable.h>
7 #include <sigc++/signal.h>
9 #include <pbd/stateful.h>
16 class Controllable : public virtual sigc::trackable, public Stateful {
18 Controllable (std::string name);
19 virtual ~Controllable() { GoingAway (this); }
21 virtual void set_value (float) = 0;
22 virtual float get_value (void) const = 0;
24 virtual bool can_send_feedback() const { return true; }
26 sigc::signal<void> LearningFinished;
28 static sigc::signal<void,Controllable*> GoingAway;
30 static sigc::signal<bool,PBD::Controllable*> StartLearning;
31 static sigc::signal<void,PBD::Controllable*> StopLearning;
33 sigc::signal<void> Changed;
35 int set_state (const XMLNode&);
36 XMLNode& get_state ();
38 std::string name() const { return _name; }
46 #endif /* __pbd_controllable_h__ */