Make region deletion undoable.

Audio_Track.C

@@ -87,11 +87,7 @@ Audio_Track::handle ( int m )
                 return 0;
             }
 
-            Region *r = new Region( c );
-
-            r->offset( timeline->x_to_ts( Fl::event_x() ) );
-
-            this->add( r );
+            Region *r = new Region( c, this, timeline->xoffset + timeline->x_to_ts( Fl::event_x() ) );
 
             redraw();
             return 1;

Region.C

@@ -91,6 +91,7 @@ Region::init ( void )
     _color = FL_BLUE;
 }
 
+/* copy constructor */
 Region::Region ( const Region & rhs )
 {
     _offset = rhs._offset;
@@ -103,6 +104,7 @@ Region::Region ( const Region & rhs )
     log_create();
 }
 
+/*  */
 Region::Region ( Audio_File *c )
 {
     init();
@@ -113,6 +115,20 @@ Region::Region ( Audio_File *c )
 }
 
 
+/* used when DND importing */
+Region::Region ( Audio_File *c, Track *t, nframes_t o )
+{
+    init();
+    _clip = c;
+    _end = _clip->length();
+    _track = t;
+    _offset = o;
+
+    _track->add( this );
+
+    log_create();
+}
+
 void
 Region::trim ( enum trim_e t, int X )
 {

Region.H

@@ -63,11 +63,12 @@ protected:
     char ** log_dump ( void )
         {
             //          char *r;
-            char **sa = (char**)malloc( sizeof( char* ) * 7 );
+            char **sa = (char**)malloc( sizeof( char* ) * 8 );
 
             int i = 0;
 
-            asprintf( &sa[ i++ ], ":source \"%s\"", _clip->name() );
+            asprintf( &sa[ i++ ], ":source \"%s\"", _clip ? _clip->name() : "" );
+            asprintf( &sa[ i++ ], ":track 0x%X", _track ? _track->id() : 0 );
             asprintf( &sa[ i++ ], ":x %lu", _offset );
             asprintf( &sa[ i++ ], ":l %lu", _start );
             asprintf( &sa[ i++ ], ":r %lu", _end );
@@ -75,9 +76,6 @@ protected:
             asprintf( &sa[ i++ ], ":gain %f", _scale );
 
             sa[ i ] = NULL;
-//            asprintf( &sa[4], ":track 0x%X", _track->id() );
-
-//            asprintf( &r, ":x %lu\n:l %lu\n:r %lu\n:selected %d\n:gain %f", _offset, _start, _end, _selected, _scale );
 
             return sa;
         }
@@ -115,18 +113,23 @@ protected:
                                     _scale = atof( v );
                                 else
                                     if ( ! strcmp( s, ":source" ) )
-                                        _clip = Audio_File::from_file( v );
-/*                                 else */
-/*                                     if ( ! strcmp( s, ":track" ) ) */
-/*                                     { */
-/*                                         int i; */
-/*                                         sscanf( v, "%X", &i ); */
-/*                                         Track *t = (Track*)Loggable::find( i ); */
+                                    {
+                                        if ( ! ( _clip = Audio_File::from_file( v ) ) )
+                                        {
+                                            printf( "Grave error: could not open source \"%s\"\n", v );
+                                        }
+                                    }
+                                    else
+                                        if ( ! strcmp( s, ":track" ) )
+                                        {
+                                            int i;
+                                            sscanf( v, "%X", &i );
+                                            Track *t = (Track*)Loggable::find( i );
 
-/*                                         assert( t ); */
+                                            assert( t );
 
-/*                                         t->add( this ); */
-/*                                     } */
+                                            t->add( this );
+                                        }
 
 
                 free( s );
@@ -153,6 +156,8 @@ public:
 
             r->set( sa );
 
+            r->log_create();
+
             return (Loggable *)r;
         }
 
@@ -167,6 +172,7 @@ public:
 
     Region ( const Region & rhs );
     Region ( Audio_File *c );
+    Region ( Audio_File *c, Track *t, nframes_t o );
 
     int handle ( int m );
     void draw_box( int X, int Y, int W, int H );

Track.C

@@ -76,7 +76,7 @@ Track::draw ( void )
 void
 Track::remove ( Track_Widget *r )
 {
-    Logger _log( this );
+//    Logger _log( this );
 
     _widgets.remove( r );
 }
@@ -96,7 +96,7 @@ Track::event_widget ( void )
 void
 Track::add ( Track_Widget *r )
 {
-    Logger _log( this );
+//    Logger _log( this );
 
     if ( r->track() )
     {