Timeline: Avoid more complete redraws.

timeline/src/Annotation_Point.H

@@ -109,7 +109,7 @@ public:
             if ( m == FL_RELEASE )
             {
                 sequence()->sort();
-                timeline->redraw();
+                redraw();
             }
 
             return r;

timeline/src/Control_Point.C

@@ -60,7 +60,7 @@ Control_Point::set ( Log_Entry &e )
         if ( ! strcmp( s, ":y" ) )
             _y = atof( v );
 
-        timeline->redraw();
+        redraw();
 
         //          _make_label();
     }

timeline/src/Sequence_Widget.C

@@ -466,8 +466,7 @@ Sequence_Widget::handle ( int m )
 //                    timeline->update_length( start() + length() );
 
                     /* FIXME: why isn't this enough? */
-//                sequence()->redraw();
-                    timeline->redraw();
+                    sequence()->redraw();
                 }
 
                 if ( ! selected() || _selection.size() == 1 )

timeline/src/Sequence_Widget.H

@@ -267,13 +267,16 @@ public:
     virtual void
     redraw ( void )
         {
+            if ( ! _sequence )
+                return;
+
             if ( ! (align() & FL_ALIGN_INSIDE) )
             {
                 // FIXME: to better..
                 _sequence->redraw();
             }
             else
-                _sequence->damage( FL_DAMAGE_EXPOSE, x(), y(), w(), h() );
+                _sequence->damage( FL_DAMAGE_ALL, x(), y(), w(), h() );
         }
 
     virtual void draw_box ( void );