lily/sustain-pedal.cc

   1 /*
   2   This file is part of LilyPond, the GNU music typesetter.
   3
   4   Copyright (C) 2000--2011 Han-Wen Nienhuys <hanwen@xs4all.nl>
   5
   6   LilyPond is free software: you can redistribute it and/or modify
   7   it under the terms of the GNU General Public License as published by
   8   the Free Software Foundation, either version 3 of the License, or
   9   (at your option) any later version.
  10
  11   LilyPond is distributed in the hope that it will be useful,
  12   but WITHOUT ANY WARRANTY; without even the implied warranty of
  13   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14   GNU General Public License for more details.
  15
  16   You should have received a copy of the GNU General Public License
  17   along with LilyPond.  If not, see <http://www.gnu.org/licenses/>.
  18 */
  19 #include "grob.hh"
  20 #include "stencil.hh"
  21 #include "font-interface.hh"
  22
  23 // update comment --hwn
  24 /*
  25   Urg.
  26   This is almost text
  27   Problem is:
  28   * we have no kerning
  29   * symbols are at wrong place in font
  30
  31
  32
  33   Properties:
  34
  35   glyph -- text string (TODO: make one large glyph of the Ped symbol, removes need for member_print ())
  36 */
  37
  38 /*
  39   FIXME. Need to use markup.
  40 */
  41 struct Sustain_pedal
  42 {
  43 public:
  44   DECLARE_SCHEME_CALLBACK (print, (SCM));
  45 };
  46
  47 MAKE_SCHEME_CALLBACK (Sustain_pedal, print, 1);
  48 SCM
  49 Sustain_pedal::print (SCM smob)
  50 {
  51   Grob *e = unsmob_grob (smob);
  52
  53   Stencil mol;
  54   SCM glyph = e->get_property ("text");
  55   if (!scm_is_string (glyph))
  56     return mol.smobbed_copy ();
  57
  58   string text = ly_scm2string (glyph);
  59
  60   for (ssize i = 0; i < text.length (); i++)
  61     {
  62       string idx ("pedal.");
  63       if (text.substr (i, 3) == "Ped")
  64         {
  65           idx += "Ped";
  66           i += 2;
  67         }
  68       else
  69         idx += string (&text.c_str ()[i], 1);
  70       Stencil m = Font_interface::get_default_font (e)->find_by_name (idx);
  71       if (!m.is_empty ())
  72         mol.add_at_edge (X_AXIS, RIGHT, m, 0);
  73     }
  74
  75   return mol.smobbed_copy ();
  76 }
  77