#include <string>
#include <set>
+#include <map>
-#include <sigc++/trackable.h>
-#include <sigc++/signal.h>
+#include "pbd/signals.h"
+#include <glibmm/threads.h>
-#include <pbd/statefuldestructible.h>
+#include "pbd/statefuldestructible.h"
class XMLNode;
class Controllable : public PBD::StatefulDestructible {
public:
- Controllable (std::string name);
+ enum Flag {
+ Toggle = 0x1,
+ GainLike = 0x2,
+ };
+
+ Controllable (const std::string& name, Flag f = Flag (0));
virtual ~Controllable() { Destroyed (this); }
- virtual void set_value (float) = 0;
- virtual float get_value (void) const = 0;
+ /* We express Controllable values in one of three ways:
+ * 1. `user' --- as presented to the user (e.g. dB, Hz, etc.)
+ * 2. `interface' --- as used in some cases for the UI representation
+ * (in order to make controls behave logarithmically).
+ * 3. `internal' --- as passed to a processor, track, plugin, or whatever.
+ *
+ * Note that in some cases user and processor may be the same
+ * (and interface different) e.g. frequency, which is presented
+ * to the user and passed to the processor in linear terms, but
+ * which needs log scaling in the interface.
+ *
+ * In other cases, user and interface may be the same (and processor different)
+ * e.g. gain, which is presented to the user in log terms (dB)
+ * but passed to the processor as a linear quantity.
+ */
+
+ /** Set `internal' value */
+ virtual void set_value (double) = 0;
+ /** @return `internal' value */
+ virtual double get_value (void) const = 0;
+
+ PBD::Signal0<void> LearningFinished;
+ static PBD::Signal3<void,PBD::Controllable*,int,int> CreateBinding;
+ static PBD::Signal1<void,PBD::Controllable*> DeleteBinding;
+
+ static PBD::Signal1<bool,PBD::Controllable*> StartLearning;
+ static PBD::Signal1<void,PBD::Controllable*> StopLearning;
+
+ static PBD::Signal1<void,Controllable*> Destroyed;
+
+ PBD::Signal0<void> Changed;
- sigc::signal<void> LearningFinished;
- static sigc::signal<void,PBD::Controllable*,int,int> CreateBinding;
- static sigc::signal<void,PBD::Controllable*> DeleteBinding;
+ int set_state (const XMLNode&, int version);
+ XMLNode& get_state ();
- static sigc::signal<bool,PBD::Controllable*> StartLearning;
- static sigc::signal<void,PBD::Controllable*> StopLearning;
+ std::string name() const { return _name; }
- static sigc::signal<void,Controllable*> Destroyed;
+ bool touching () const { return _touching; }
+ void set_touching (bool yn) { _touching = yn; }
- sigc::signal<void> Changed;
+ bool is_toggle() const { return _flags & Toggle; }
+ bool is_gain_like() const { return _flags & GainLike; }
- int set_state (const XMLNode&);
- XMLNode& get_state ();
+ virtual double lower() const { return 0.0; }
+ virtual double upper() const { return 1.0; }
- std::string name() const { return _name; }
- bool touching () const { return _touching; }
-
- void set_touching (bool yn) { _touching = yn; }
+ Flag flags() const { return _flags; }
+ void set_flags (Flag f);
static Controllable* by_id (const PBD::ID&);
static Controllable* by_name (const std::string&);
-
+ static const std::string xml_node_name;
private:
std::string _name;
+
+ Flag _flags;
bool _touching;
- void add ();
- void remove ();
+ static void add (Controllable&);
+ static void remove (Controllable*);
typedef std::set<PBD::Controllable*> Controllables;
- static Glib::Mutex* registry_lock;
+ static Glib::Threads::RWLock registry_lock;
static Controllables registry;
};
class IgnorableControllable : public Controllable
{
public:
- IgnorableControllable () : PBD::Controllable ("ignoreMe") {}
- ~IgnorableControllable () {}
+ IgnorableControllable () : PBD::Controllable ("ignoreMe") {}
+ ~IgnorableControllable () {}
- void set_value (float v){}
- float get_value () const { return 0.0; }
+ void set_value (double /*v*/) {}
+ double get_value () const { return 0.0; }
};
}