lily/clef.cc

   1 /*
   2   clef.cc -- implement Clef_item
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c) 1997--2008 Han-Wen Nienhuys <hanwen@xs4all.nl>
   7 */
   8
   9 #include "clef.hh"
  10
  11 #include "font-interface.hh"
  12 #include "international.hh"
  13 #include "item.hh"
  14 #include "stencil.hh"
  15
  16 MAKE_SCHEME_CALLBACK (Clef, calc_glyph_name, 1);
  17 SCM
  18 Clef::calc_glyph_name (SCM smob)
  19 {
  20   Item *s = unsmob_item (smob);
  21   SCM glyph = s->get_property ("glyph");
  22
  23   if (scm_is_string (glyph))
  24     {
  25       string str = ly_scm2string (glyph);
  26
  27       if (to_boolean (s->get_property ("non-default"))
  28           && s->break_status_dir () != RIGHT
  29           && !to_boolean (s->get_property ("full-size-change")))
  30         {
  31           str += "_change";
  32         }
  33
  34       return ly_string2scm (str);
  35     }
  36
  37   s->suicide ();
  38   return SCM_UNSPECIFIED;
  39 }
  40
  41 MAKE_SCHEME_CALLBACK (Clef, print, 1)
  42 SCM
  43 Clef::print (SCM smob)
  44 {
  45   Grob *me = unsmob_grob (smob);
  46   SCM glyph_scm = me->get_property ("glyph-name");
  47   if (!scm_is_string (glyph_scm))
  48     return SCM_EOL;
  49
  50   string glyph = string (ly_scm2string (glyph_scm));
  51   Font_metric *fm = Font_interface::get_default_font (me);
  52   Stencil out = fm->find_by_name (glyph);
  53   if (out.is_empty ())
  54     me->warning (_f ("clef `%s' not found", glyph.c_str ()));
  55   return out.smobbed_copy ();
  56 }
  57
  58 ADD_INTERFACE (Clef,
  59                "A clef sign.",
  60
  61                /* properties */
  62                "full-size-change "
  63                "glyph "
  64                "glyph-name "
  65                "non-default "
  66                );
  67