lily/timing-engraver.cc

   1 /*
   2   timing-grav.cc -- implement Timing_engraver
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c)  1997--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
   7 */
   8 #include <iostream.h>
   9
  10 #include "translator-group.hh"
  11 #include "command-request.hh"
  12 #include "score-element-info.hh"
  13 #include "multi-measure-rest.hh"
  14 #include "timing-translator.hh"
  15 #include "engraver.hh"
  16
  17 /**
  18   Do time bookkeeping
  19  */
  20 class Timing_engraver : public Timing_translator, public Engraver
  21 {
  22 protected:
  23   virtual void do_post_move_processing ();
  24   virtual void do_pre_move_processing ();
  25 public:
  26   VIRTUAL_COPY_CONS(Translator);
  27 };
  28
  29 ADD_THIS_TRANSLATOR(Timing_engraver);
  30
  31 void
  32 Timing_engraver::do_post_move_processing( )
  33 {
  34   Timing_translator::do_post_move_processing ();
  35
  36   SCM nonauto = get_property ("barNonAuto");
  37
  38   SCM which = get_property ("whichBar");
  39   if (!gh_string_p (which))
  40     which = now_mom () ? SCM_EOL : ly_str02scm ("|");
  41
  42   if (!gh_string_p (which) && !to_boolean (nonauto))
  43     {
  44       SCM always = get_property ("barAlways");
  45       if (!measure_position ()
  46           || (to_boolean (always)))
  47         {
  48           which=get_property ("defaultBarType" );
  49         }
  50     }
  51
  52   daddy_trans_l_->set_property ("whichBar", which);
  53 }
  54
  55 void
  56 Timing_engraver::do_pre_move_processing ()
  57 {
  58   Timing_translator::do_pre_move_processing ();
  59   daddy_trans_l_->set_property ("whichBar", SCM_EOL);
  60 }
  61
  62
  63