Timeline: Fix bug where opening context menu on a region is equivalent to initiating a drag on that region.

Closes #126

timeline/src/Audio_Region.C

@@ -841,6 +841,9 @@ Audio_Region::handle ( int m )
         }
         case FL_DRAG:
 
+            if ( Fl::event_is_click() )
+                return 1;
+
             if ( ! _drag )
             {
                 begin_drag( Drag( X, Y, x_to_offset( X ) ) );

timeline/src/Sequence.C

@@ -321,6 +321,10 @@ Sequence::handle ( int m )
 /*     if ( m != FL_NO_EVENT ) */
 /*         DMESSAGE( "%s", event_name( m ) ); */
 
+//            if ( m == FL_RELEASE )
+    if ( ! Fl::pushed() )
+        Sequence_Widget::pushed( NULL );
+
     switch ( m )
     {
         case FL_KEYBOARD:
@@ -398,7 +402,8 @@ Sequence::handle ( int m )
                     if ( Sequence_Widget::pushed()->sequence()->class_name() == class_name() )
                     {
                         /* accept objects dragged from other sequences of this type */
-                        
+                        if ( Sequence_Widget::pushed()->sequence() != this )
+                        {
                             timeline->sequence_lock.wrlock();
                             add( Sequence_Widget::pushed() );
                             timeline->sequence_lock.unlock();
@@ -407,6 +412,7 @@ Sequence::handle ( int m )
                             
                             fl_cursor( FL_CURSOR_MOVE );
                         }
+                    }
                     else
                         fl_cursor( FL_CURSOR_DEFAULT );
                 }
@@ -446,10 +452,10 @@ Sequence::handle ( int m )
                     if ( r )
                         r->handle( FL_ENTER );
                 }
+            }
 
             return 1;
         }
-        }
         default:
         {
             if ( m != FL_DRAG &&
@@ -462,6 +468,9 @@ Sequence::handle ( int m )
 /*             if ( this == Fl::focus() ) */
 /*                 DMESSAGE( "Sequence widget = %p", r ); */
 
+            if ( m == FL_RELEASE )
+                Sequence_Widget::pushed( NULL );
+
             if ( r )
             {
                 int retval = r->dispatch( m );
@@ -482,8 +491,6 @@ Sequence::handle ( int m )
 
                         r->handle( FL_FOCUS );
                     }
-                    else if ( m == FL_RELEASE )
-                        Sequence_Widget::pushed( NULL );
                 }
 
                 if ( _delete_queue.size() )

timeline/src/Track.C

@@ -1137,7 +1137,7 @@ Track::handle ( int m )
                 timeline->insert_track( this, timeline->event_inside() );
                 return 1;
             }
-            return 0;
+            return Fl_Group::handle( m );
             break;
         case FL_DND_RELEASE:
             receptive_to_drop = 0;