lily/semi-tie-column.cc

   1 /*
   2   semi-tie-column.cc -- implement Semi_tie_column
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c) 2005--2007 Han-Wen Nienhuys <hanwen@xs4all.nl>
   7
   8 */
   9
  10 #include "semi-tie-column.hh"
  11 #include "semi-tie.hh"
  12 #include "grob.hh"
  13 #include "tie-column.hh"
  14 #include "tie.hh"
  15 #include "directional-element-interface.hh"
  16 #include "pointer-group-interface.hh"
  17 #include "staff-symbol-referencer.hh"
  18 #include "item.hh"
  19 #include "tie-formatting-problem.hh"
  20 #include "tie-column-format.hh"
  21
  22
  23 ADD_INTERFACE (Semi_tie_column,
  24               "The interface for a column of l.v. (laissez vibrer) ties.",
  25
  26               /* properties */
  27               "positioning-done "
  28               "head-direction "
  29               "tie-configuration "
  30               );
  31
  32
  33
  34 /*
  35   Cut & paste from tie-column.cc
  36  */
  37 MAKE_SCHEME_CALLBACK (Semi_tie_column, calc_positioning_done, 1);
  38 SCM
  39 Semi_tie_column::calc_positioning_done (SCM smob)
  40 {
  41   Grob *me = unsmob_grob (smob);
  42
  43   me->set_property ("positioning-done", SCM_BOOL_T);
  44
  45   extract_grob_set (me, "ties", lv_ro_ties);
  46   vector<Grob*> lv_ties (lv_ro_ties);
  47
  48   vector_sort (lv_ties, Semi_tie::less);
  49
  50   Ties_configuration ties_config;
  51
  52
  53   Tie_formatting_problem problem;
  54
  55   problem.from_semi_ties (lv_ties, to_dir (me->get_property ("head-direction")));
  56
  57   SCM manual_configs = me->get_property ("tie-configuration");
  58   problem.set_manual_tie_configuration (manual_configs);
  59
  60   Ties_configuration base = problem.generate_optimal_configuration ();
  61   for (vsize i = 0; i < lv_ties.size (); i++)
  62     {
  63       SCM cp = Tie::get_control_points (lv_ties[i], problem.common_x_refpoint (), base[i],
  64                                         problem.details_);
  65
  66       lv_ties[i]->set_property ("control-points", cp);
  67       set_grob_direction (lv_ties[i], base[i].dir_);
  68
  69       problem.set_debug_scoring (base);
  70     }
  71
  72   return SCM_BOOL_T;
  73 }
  74
  75 MAKE_SCHEME_CALLBACK (Semi_tie_column, calc_head_direction, 1);
  76 SCM
  77 Semi_tie_column::calc_head_direction (SCM smob)
  78 {
  79   Grob *me = unsmob_grob (smob);
  80
  81   extract_grob_set (me, "ties", ties);
  82   Direction d = LEFT;
  83   for (vsize i = 0; i < ties.size (); i++)
  84     {
  85       Direction this_d = to_dir (ties[i]->get_property ("head-direction"));
  86       if (i > 0 && d != this_d)
  87         {
  88           programming_error ("all semi-ties in a semi-tie-column should have the same head-direction");
  89           return scm_from_int (d);
  90         }
  91       d = this_d;
  92     }
  93   return scm_from_int (d);
  94 }