lily/dots.cc

   1 /*
   2   dots.cc -- implement Dots
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c) 1997--2009 Han-Wen Nienhuys <hanwen@xs4all.nl>
   7 */
   8
   9 #include "dots.hh"
  10
  11 #include "item.hh"
  12 #include "output-def.hh"
  13 #include "font-interface.hh"
  14 #include "lookup.hh"
  15 #include "staff-symbol-referencer.hh"
  16 #include "international.hh"
  17
  18 MAKE_SCHEME_CALLBACK (Dots, print, 1);
  19 SCM
  20 Dots::print (SCM d)
  21 {
  22   Grob *sc = unsmob_grob (d);
  23   Stencil mol;
  24
  25   SCM c = sc->get_property ("dot-count");
  26
  27   if (scm_is_number (c))
  28     {
  29       SCM scm_style = sc->get_property ("style");
  30       string style ="";
  31       if (scm_is_symbol (scm_style))
  32         style = ly_symbol2string (scm_style);
  33       string idx =  "dots.dot" + style;
  34       Stencil d = Font_interface::get_default_font (sc)->find_by_name (idx);
  35       if (d.is_empty ())
  36         {
  37           sc->warning (_f ("dot `%s' not found", idx.c_str ()));
  38           return SCM_EOL;
  39         }
  40       Real dw = d.extent (X_AXIS).length ();
  41
  42       /*
  43         we need to add a real blank box, to assure that
  44         side-positioning doth not cancel the left-most padding.  */
  45
  46       /*
  47         TODO: this should  be handled by side-position padding.
  48       */
  49       mol = Lookup::blank (Box (Interval (0, 0),
  50                                 Interval (0, 0)));
  51
  52       for (int i = scm_to_int (c); i--;)
  53         {
  54           d.translate_axis (2 * dw, X_AXIS);
  55           mol.add_at_edge (X_AXIS, RIGHT, d, dw);
  56         }
  57     }
  58   return mol.smobbed_copy ();
  59 }
  60
  61 ADD_INTERFACE (Dots,
  62                "The dots to go with a notehead or rest.  @code{direction}"
  63                " sets the preferred direction to move in case of staff line"
  64                " collisions.  @code{style} defaults to undefined, which is"
  65                " normal 19th/20th century traditional style.  Set"
  66                " @code{style} to @code{vaticana} for ancient type dots.",
  67
  68                /* properties */
  69                "direction "
  70                "dot-count "
  71                "style "
  72                );