lily/script-interface.cc

   1 /*
   2   script-interface.cc -- implement Script_interface
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c) 1999--2007 Han-Wen Nienhuys <hanwen@xs4all.nl>
   7 */
   8
   9 #include "script-interface.hh"
  10
  11 #include "directional-element-interface.hh"
  12 #include "item.hh"
  13 #include "warn.hh"
  14 #include "font-interface.hh"
  15 #include "side-position-interface.hh"
  16 #include "output-def.hh"
  17 #include "lookup.hh"
  18 #include "stem.hh"
  19 #include "note-column.hh"
  20
  21 Stencil
  22 Script_interface::get_stencil (Grob *me, Direction d)
  23 {
  24   SCM s = me->get_property ("script-stencil");
  25   assert (scm_is_pair (s));
  26
  27   SCM key = scm_car (s);
  28   if (key == ly_symbol2scm ("feta"))
  29     {
  30       SCM name_entry = scm_cdr (s);
  31       SCM str = ((scm_is_pair (name_entry)) ? index_get_cell (name_entry, d)
  32                  : name_entry);
  33       return Font_interface::get_default_font (me)
  34         ->find_by_name ("scripts." + ly_scm2string (str));
  35     }
  36   else if (key == ly_symbol2scm ("accordion"))
  37     return Lookup::accordion (scm_cdr (s), 1.0,
  38                               Font_interface::get_default_font (me));
  39   else
  40     assert (false);
  41
  42   return Stencil ();
  43 }
  44
  45 MAKE_SCHEME_CALLBACK (Script_interface, calc_positioning_done, 1);
  46 SCM
  47 Script_interface::calc_positioning_done (SCM smob)
  48 {
  49   Grob *me = unsmob_grob (smob);
  50   if (Grob *par = me->get_parent (X_AXIS))
  51     {
  52       Grob *stem = Note_column::get_stem (par);
  53       if (stem && Stem::first_head (stem))
  54         me->set_parent (Stem::first_head (stem), X_AXIS);
  55     }
  56   return SCM_BOOL_T;
  57 }
  58
  59 MAKE_SCHEME_CALLBACK (Script_interface, calc_direction, 1);
  60 SCM
  61 Script_interface::calc_direction (SCM smob)
  62 {
  63   Grob *me = unsmob_grob (smob);
  64   Direction d = Side_position_interface::get_direction (me);
  65
  66   if (!d)
  67     {
  68       me->programming_error ("script direction not yet known");
  69       d = DOWN;
  70     }
  71
  72   (void) me->get_property ("positioning-done");
  73   return scm_from_int (d);
  74 }
  75
  76 MAKE_SCHEME_CALLBACK (Script_interface, calc_cross_staff, 1);
  77 SCM
  78 Script_interface::calc_cross_staff (SCM smob)
  79 {
  80   Grob *me = unsmob_grob (smob);
  81   Grob *stem = Note_column::get_stem (me->get_parent (X_AXIS));
  82   return scm_from_bool (stem && to_boolean (stem->get_property ("cross-staff")));
  83 }
  84
  85 MAKE_SCHEME_CALLBACK (Script_interface, print, 1);
  86
  87 SCM
  88 Script_interface::print (SCM smob)
  89 {
  90   Grob *me = unsmob_grob (smob);
  91
  92   Direction dir = get_grob_direction (me);
  93
  94   return get_stencil (me, dir).smobbed_copy ();
  95 }
  96
  97 struct Text_script
  98 {
  99   DECLARE_GROB_INTERFACE ();
 100 };
 101
 102 ADD_INTERFACE (Text_script,
 103                "An object that is put above or below a note",
 104
 105                /* properties */
 106                "add-stem-support "
 107                "avoid-slur "
 108                "script-priority "
 109                "slur "
 110                );
 111
 112 /*
 113   Hmm. Where should we put add-stem-support ?
 114 */
 115 ADD_INTERFACE (Script_interface,
 116                "An object that is put above or below a note",
 117                "add-stem-support "
 118                "avoid-slur "
 119                "positioning-done "
 120                "script-priority "
 121                "script-stencil "
 122                "slur "
 123                "slur-padding "
 124                );
 125