lily/tuplet-number.cc

   1 /*
   2   tuplet-number.cc -- implement Tuplet_number
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c) 2005--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
   7
   8 */
   9
  10 #include "tuplet-bracket.hh"
  11 #include "moment.hh"
  12 #include "paper-column.hh"
  13 #include "text-interface.hh"
  14 #include "spanner.hh"
  15 #include "lookup.hh"
  16
  17 struct Tuplet_number
  18 {
  19   DECLARE_SCHEME_CALLBACK(print, (SCM));
  20   static bool has_interface (Grob *);
  21 };
  22
  23
  24 MAKE_SCHEME_CALLBACK(Tuplet_number, print, 1);
  25 SCM
  26 Tuplet_number::print (SCM smob)
  27 {
  28   Spanner *me = unsmob_spanner (smob);
  29   Spanner *tuplet = unsmob_spanner (me->get_object ("bracket"));
  30
  31   if (!tuplet || !tuplet->is_live ())
  32     {
  33       me->suicide ();
  34       return SCM_EOL;
  35     }
  36
  37   /*
  38     Don't print if it doesn't span time.
  39    */
  40   if (robust_scm2moment (tuplet->get_bound (LEFT)->get_column ()->get_property ("when"), Moment (0))
  41       == robust_scm2moment (tuplet->get_bound (RIGHT)->get_column ()->get_property ("when"), Moment (0)))
  42     {
  43       me->suicide ();
  44       return SCM_EOL;
  45     }
  46
  47   SCM stc_scm = Text_interface::print (smob);
  48   Stencil *stc = unsmob_stencil (stc_scm);
  49
  50   stc->align_to (X_AXIS, CENTER);
  51   stc->align_to (Y_AXIS, CENTER);
  52
  53   SCM cpoints =  tuplet->get_property ("control-points");
  54   Drul_array<Offset> points;
  55   points[LEFT] = ly_scm2offset (scm_car (cpoints));
  56   points[RIGHT] = ly_scm2offset (scm_cadr (cpoints));
  57
  58   stc->translate ((points[RIGHT] + points[LEFT]) / 2);
  59
  60   return stc_scm;
  61 }
  62
  63
  64 ADD_INTERFACE (Tuplet_number,
  65                "tuplet-number-interface",
  66                "The number for a bracket. "
  67                ,
  68
  69                /* properties */
  70                "avoid-slur "    // UGH.
  71                "bracket ");
  72