lily/clef.cc

   1 /*
   2   clef.cc -- implement Clef_item
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c) 1997--2006 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 "std-string.hh"
  15 #include "stencil.hh"
  16
  17 MAKE_SCHEME_CALLBACK (Clef, calc_glyph_name, 1);
  18 SCM
  19 Clef::calc_glyph_name (SCM smob)
  20 {
  21   Item *s = unsmob_item (smob);
  22   SCM glyph = s->get_property ("glyph");
  23
  24   if (scm_is_string (glyph))
  25     {
  26       string str = ly_scm2string (glyph);
  27
  28       if (to_boolean (s->get_property ("non-default"))
  29           && s->break_status_dir () != RIGHT
  30           && !to_boolean (s->get_property ("full-size-change")))
  31         {
  32           str += "_change";
  33         }
  34
  35       return scm_makfrom0str (str.c_str ());
  36     }
  37
  38   s->suicide ();
  39   return SCM_UNSPECIFIED;
  40 }
  41
  42 MAKE_SCHEME_CALLBACK (Clef, print, 1)
  43 SCM
  44 Clef::print (SCM smob)
  45 {
  46   Grob *me = unsmob_grob (smob);
  47   SCM glyph_scm = me->get_property ("glyph-name");
  48   if (!scm_is_string (glyph_scm))
  49     return SCM_EOL;
  50
  51   string glyph = string (ly_scm2string (glyph_scm));
  52   Font_metric *fm = Font_interface::get_default_font (me);
  53   Stencil out = fm->find_by_name (glyph);
  54   if (out.is_empty ())
  55     me->warning (_f ("clef `%s' not found", glyph.c_str ()));
  56   return out.smobbed_copy ();
  57 }
  58
  59 ADD_INTERFACE (Clef, "clef-interface",
  60                "A clef sign",
  61
  62                /* properties */
  63                "full-size-change "
  64                "glyph "
  65                "glyph-name "
  66                "non-default "
  67                );
  68