lily/all-font-metrics-scheme.cc

   1 /*
   2   This file is part of LilyPond, the GNU music typesetter.
   3
   4   Copyright (C) 2007--2011 Han-Wen Nienhuys <hanwen@lilypond.org>
   5
   6
   7   LilyPond is free software: you can redistribute it and/or modify
   8   it under the terms of the GNU General Public License as published by
   9   the Free Software Foundation, either version 3 of the License, or
  10   (at your option) any later version.
  11
  12   LilyPond is distributed in the hope that it will be useful,
  13   but WITHOUT ANY WARRANTY; without even the implied warranty of
  14   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15   GNU General Public License for more details.
  16
  17   You should have received a copy of the GNU General Public License
  18   along with LilyPond.  If not, see <http://www.gnu.org/licenses/>.
  19 */
  20
  21 #include "all-font-metrics.hh"
  22 #include "main.hh"
  23
  24 LY_DEFINE (ly_reset_all_fonts, "ly:reset-all-fonts", 0, 0, 0,
  25            (),
  26            "Forget all about previously loaded fonts.")
  27 {
  28   delete all_fonts_global;
  29   all_fonts_global = new All_font_metrics (global_path.to_string ());
  30
  31   return SCM_UNSPECIFIED;
  32 }
  33
  34
  35 LY_DEFINE (ly_system_font_load, "ly:system-font-load", 1, 0, 0,
  36            (SCM name),
  37            "Load the OpenType system font @file{@var{name}.otf}."
  38            "  Fonts loaded with this command must contain three"
  39            " additional SFNT font tables called @code{LILC},"
  40            " @code{LILF}, and @code{LILY}, needed for typesetting"
  41            " musical elements.  Currently, only the Emmentaler and"
  42            " the Emmentaler-Brace fonts fulfill these requirements.\n"
  43            "\n"
  44            "Note that only @code{ly:font-get-glyph} and derived"
  45            " code (like @code{\\lookup}) can access glyphs from"
  46            " the system fonts; text strings are handled exclusively"
  47            " via the Pango interface.")
  48 {
  49   LY_ASSERT_TYPE (scm_is_string, name, 1);
  50
  51   string name_str = ly_scm2string (name);
  52   Font_metric *fm = all_fonts_global->find_font (name_str);
  53
  54   return fm->self_scm ();
  55 }