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--2009 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   DECLARE_SCHEME_CALLBACK (calc_cross_staff, (SCM));
  21   DECLARE_GROB_INTERFACE ();
  22 };
  23
  24
  25 MAKE_SCHEME_CALLBACK (Tuplet_number, print, 1);
  26 SCM
  27 Tuplet_number::print (SCM smob)
  28 {
  29   Spanner *me = unsmob_spanner (smob);
  30   Spanner *tuplet = unsmob_spanner (me->get_object ("bracket"));
  31
  32   if (!tuplet || !tuplet->is_live ())
  33     {
  34       me->suicide ();
  35       return SCM_EOL;
  36     }
  37
  38   SCM stc_scm = Text_interface::print (smob);
  39   Stencil *stc = unsmob_stencil (stc_scm);
  40
  41   stc->align_to (X_AXIS, CENTER);
  42   stc->align_to (Y_AXIS, CENTER);
  43
  44   SCM cpoints =  tuplet->get_property ("control-points");
  45   Drul_array<Offset> points;
  46   if (scm_is_pair (cpoints))
  47     {
  48       points[LEFT] = ly_scm2offset (scm_car (cpoints));
  49       points[RIGHT] = ly_scm2offset (scm_cadr (cpoints));
  50     }
  51   else
  52     {
  53       programming_error ("wrong type for control-points");
  54     }
  55   stc->translate ((points[RIGHT] + points[LEFT]) / 2);
  56
  57   return stc_scm;
  58 }
  59
  60 MAKE_SCHEME_CALLBACK (Tuplet_number, calc_cross_staff, 1)
  61 SCM
  62 Tuplet_number::calc_cross_staff (SCM smob)
  63 {
  64   Grob *me = unsmob_grob (smob);
  65   return unsmob_grob (me->get_object ("bracket"))->get_property ("cross-staff");
  66 }
  67
  68 ADD_INTERFACE (Tuplet_number,
  69                "The number for a bracket.",
  70
  71                /* properties */
  72                "avoid-slur "    // UGH.
  73                "bracket "
  74                );
  75