/*
  clef.cc -- implement Clef_item

  source file of the GNU LilyPond music typesetter

  (c) 1997--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
*/

#include "clef.hh"

#include "font-interface.hh"
#include "international.hh"
#include "item.hh"
#include "std-string.hh"
#include "stencil.hh"

MAKE_SCHEME_CALLBACK (Clef, calc_glyph_name, 1);
SCM
Clef::calc_glyph_name (SCM smob)
{
  Item *s = unsmob_item (smob);
  SCM glyph = s->get_property ("glyph");

  if (scm_is_string (glyph))
    {
      string str = ly_scm2string (glyph);

      if (to_boolean (s->get_property ("non-default"))
	  && s->break_status_dir () != RIGHT
	  && !to_boolean (s->get_property ("full-size-change")))
	{
	  str += "_change";
	}

      return scm_makfrom0str (str.c_str ());
    }

  s->suicide ();
  return SCM_UNSPECIFIED;
}

MAKE_SCHEME_CALLBACK (Clef, print, 1)
SCM
Clef::print (SCM smob)
{
  Grob *me = unsmob_grob (smob);
  SCM glyph_scm = me->get_property ("glyph-name");
  if (!scm_is_string (glyph_scm))
    return SCM_EOL;

  string glyph = string (ly_scm2string (glyph_scm));
  Font_metric *fm = Font_interface::get_default_font (me);
  Stencil out = fm->find_by_name (glyph);
  if (out.is_empty ())
    me->warning (_f ("clef `%s' not found", glyph.c_str ()));
  return out.smobbed_copy ();
}

ADD_INTERFACE (Clef, "clef-interface",
	       "A clef sign",

	       /* properties */
	       "full-size-change "
	       "glyph "
	       "glyph-name "
	       "non-default "
	       );

