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
  37     assert (false);
  38
  39   return Stencil ();
  40 }
  41
  42 MAKE_SCHEME_CALLBACK (Script_interface, calc_positioning_done, 1);
  43 SCM
  44 Script_interface::calc_positioning_done (SCM smob)
  45 {
  46   Grob *me = unsmob_grob (smob);
  47   if (Grob *par = me->get_parent (X_AXIS))
  48     {
  49       Grob *stem = Note_column::get_stem (par);
  50       if (stem && Stem::first_head (stem))
  51         me->set_parent (Stem::first_head (stem), X_AXIS);
  52     }
  53   return SCM_BOOL_T;
  54 }
  55
  56 MAKE_SCHEME_CALLBACK (Script_interface, calc_direction, 1);
  57 SCM
  58 Script_interface::calc_direction (SCM smob)
  59 {
  60   Grob *me = unsmob_grob (smob);
  61   Direction d = Side_position_interface::get_direction (me);
  62
  63   if (!d)
  64     {
  65       me->programming_error ("script direction not yet known");
  66       d = DOWN;
  67     }
  68
  69   (void) me->get_property ("positioning-done");
  70   return scm_from_int (d);
  71 }
  72
  73 MAKE_SCHEME_CALLBACK (Script_interface, calc_cross_staff, 1);
  74 SCM
  75 Script_interface::calc_cross_staff (SCM smob)
  76 {
  77   Grob *me = unsmob_grob (smob);
  78   Grob *stem = Note_column::get_stem (me->get_parent (X_AXIS));
  79
  80   if (stem && to_boolean (stem->get_property ("cross-staff")))
  81     return SCM_BOOL_T;
  82
  83   Grob *slur = unsmob_grob (me->get_object ("slur"));
  84   SCM avoid_slur = me->get_property ("avoid-slur");
  85   if (slur && to_boolean (slur->get_property ("cross-staff"))
  86       && (avoid_slur == ly_symbol2scm ("outside")
  87           || avoid_slur == ly_symbol2scm ("around")))
  88     return SCM_BOOL_T;
  89
  90   return SCM_BOOL_F;
  91 }
  92
  93 MAKE_SCHEME_CALLBACK (Script_interface, print, 1);
  94
  95 SCM
  96 Script_interface::print (SCM smob)
  97 {
  98   Grob *me = unsmob_grob (smob);
  99
 100   Direction dir = get_grob_direction (me);
 101
 102   return get_stencil (me, dir).smobbed_copy ();
 103 }
 104
 105 struct Text_script
 106 {
 107   DECLARE_GROB_INTERFACE ();
 108 };
 109
 110 ADD_INTERFACE (Text_script,
 111                "An object that is put above or below a note.",
 112
 113                /* properties */
 114                "add-stem-support "
 115                "avoid-slur "
 116                "script-priority "
 117                "slur "
 118                );
 119
 120 /*
 121   Hmm. Where should we put add-stem-support ?
 122 */
 123 ADD_INTERFACE (Script_interface,
 124                "An object that is put above or below a note.",
 125
 126                /* properties */
 127                "add-stem-support "
 128                "avoid-slur "
 129                "positioning-done "
 130                "script-priority "
 131                "script-stencil "
 132                "slur "
 133                "slur-padding "
 134                );
 135