Added SkewedRuler and started on registration system.

lib-src/mod-track-panel/Registrar.cpp

@@ -21,3 +21,54 @@ plugging in of new resources.
 #include <wx/wx.h>
 #include "Registrar.h"
 
+START_NAMESPACE
+
+Registrar * pRegistrar = NULL;
+
+// By defining the external function and including it here, we save ourselves maintaing two lists.
+// Also we save ourselves recompiling Registrar each time the classes that regiser change.
+// Part of the idea is that the Registrar knows very little about the classes that
+// register with it.
+#define DISPATCH( Name ) extern int Name##Dispatch( Registrar & R, t_RegistrarDispatchType Type );\
+   Name##Dispatch( *pRegistrar, Type )
+
+// Not a class function, otherwise the functions called 
+// are treated as belonging to the class.
+int RegistrarDispatch( t_RegistrarDispatchType Type )
+{
+   wxASSERT( pRegistrar != NULL );
+
+   DISPATCH( SkewedRuler );
+   DISPATCH( MidiArtist );
+   DISPATCH( WaveArtist );
+   DISPATCH( EnvelopeArtist );
+   DISPATCH( LabelArtist );
+   DISPATCH( DragGridSizer );
+   return 0;
+}
+
+// Start()
+// Static function.  Allocates Registrar.
+void Registrar::Start()
+{
+   wxASSERT( pRegistrar ==NULL );
+   pRegistrar = new Registrar();
+
+   RegistrarDispatch( RegArtist );
+   RegistrarDispatch( RegDataType );
+   RegistrarDispatch( RegCommand );
+   RegistrarDispatch( RegMenuItem );
+}
+
+// Finish()
+// Static function.  DeAllocates Registrar.
+void Registrar::Finish()
+{
+   wxASSERT( pRegistrar !=NULL );
+   delete pRegistrar;
+   pRegistrar = NULL;
+}
+
+
+
+};//End of Namespace.