Mixer: Give better visual feedback in control OSC/MIDI learning mode.

mixer/src/Controller_Module.C

@@ -50,6 +50,9 @@
 
 bool Controller_Module::learn_by_number = false;
 bool Controller_Module::_learn_mode = false;
+
+Controller_Module* Controller_Module::_learning_control = NULL;
+
 
 
 void
@@ -836,10 +839,27 @@ Controller_Module::draw ( void )
 
     if ( learn_mode() )
     {
-        fl_rectf( x(),y(),w(),h(), fl_color_add_alpha( FL_MAGENTA, 50 ) );
+	fl_rectf( x(),y(),w(),h(),
+		  fl_color_add_alpha(
+		      this == _learning_control
+		      ? FL_RED
+		      : FL_GREEN,
+		      60 ) );
     }
 }
 
+void Controller_Module::learning_callback ( void *userdata )
+{
+    ((Controller_Module*)userdata)->learning_callback();
+}
+
+void Controller_Module::learning_callback ( void )
+{
+    _learning_control = NULL;
+    this->redraw();
+}
+
+
 int
 Controller_Module::handle ( int m )
 {
@@ -852,6 +872,10 @@ Controller_Module::handle ( int m )
             {
                 tooltip( "Now learning control. Move the desired control on your controller" );
 
+		_learning_control = this;
+		
+		this->redraw();
+		
                 //connect_to( &module->control_input[port] );
                 Port *p = control_output[0].connected_port();
                 
@@ -861,7 +885,7 @@ Controller_Module::handle ( int m )
 
                     DMESSAGE( "Will learn %s", path );
 
-                    mixer->osc_endpoint->learn( path );
+                    mixer->osc_endpoint->learn( path, Controller_Module::learning_callback, this );
                 }
 
                 return 1;

mixer/src/Controller_Module.H

@@ -47,9 +47,13 @@ class Controller_Module : public Module
     void add_osc_peers_to_menu ( Fl_Menu_Button *m, const char *prefix );
     void add_osc_connections_to_menu ( Fl_Menu_Button *m, const char *prefix );
 
+    static void learning_callback ( void *userdata );
+    void learning_callback ( void );
+    
 public:
 
     static bool _learn_mode;
+    static Controller_Module *_learning_control;
 
     static bool learn_by_number;
     static bool learn_mode ( void ) { return _learn_mode; }

nonlib/OSC/Endpoint.C

@@ -187,6 +187,7 @@ namespace OSC
     Endpoint::Endpoint ( )
     {  
         _learning_path = NULL;
+	_learning_callback = NULL;
         _peer_signal_notification_callback = 0;
         _peer_signal_notification_userdata = 0;
         _peer_scan_complete_callback = 0;
@@ -685,8 +686,13 @@ namespace OSC
             DMESSAGE( "Learned translation \"%s\" -> \"%s\"", path, ep->_learning_path );
             
             free(ep->_learning_path);
+
+	    ep->_learning_callback(ep->_learning_userdata);
+
+	    ep->_learning_userdata = NULL;
+	    ep->_learning_callback = NULL;
             ep->_learning_path = NULL;
-            
+
             return 0;
         }
 
@@ -1066,13 +1072,16 @@ namespace OSC
 
     /* prepare to learn a translation for /path/. The next unhandled message to come through will be mapped to /path/ */
     void
-    Endpoint::learn ( const char *path )
+    Endpoint::learn ( const char *path, void (*callback)(void*), void *userdata )
     {
         if ( _learning_path )
             free( _learning_path );
 
         _learning_path = NULL;
 
+	_learning_callback = callback;
+	_learning_userdata = userdata;
+
         if ( path )
             _learning_path = strdup( path );
     }

nonlib/OSC/Endpoint.H

@@ -241,6 +241,8 @@ namespace OSC
         std::list<Method*> _methods;
 
         char *_learning_path;
+	void (*_learning_callback)(void *);
+	void *_learning_userdata;
 
         class TranslationDestination {
 
@@ -305,7 +307,7 @@ namespace OSC
     public:
 
         void send_feedback ( const char *path, float v );
-        void learn ( const char *path );
+        void learn ( const char *path, void (*callback)(void*), void *userdata );
 
         lo_address address ( void )
             {