lily/all-font-metrics.cc

   1 /*
   2   This file is part of LilyPond, the GNU music typesetter.
   3
   4   Copyright (C) 1999--2010 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
  20 #include "all-font-metrics.hh"
  21
  22 #include "string-convert.hh"
  23 #include "international.hh"
  24 #include "main.hh"
  25 #include "open-type-font.hh"
  26 #include "pango-font.hh"
  27 #include "scm-hash.hh"
  28 #include "warn.hh"
  29
  30
  31 Index_to_charcode_map const *
  32 All_font_metrics::get_index_to_charcode_map (string filename,
  33                                              int face_index,
  34                                              FT_Face face)
  35 {
  36   string key = filename + String_convert::int_string (face_index);
  37   if (filename_charcode_maps_map_.find (key)
  38       == filename_charcode_maps_map_.end ())
  39     filename_charcode_maps_map_[key] = make_index_to_charcode_map (face);
  40
  41   return &filename_charcode_maps_map_[key];
  42 }
  43
  44
  45 All_font_metrics::All_font_metrics (string path)
  46 {
  47   otf_dict_ = new Scheme_hash_table;
  48
  49 #if HAVE_PANGO_FT2
  50   PangoFontMap *pfm = pango_ft2_font_map_new ();
  51
  52   pango_ft2_fontmap_
  53     = G_TYPE_CHECK_INSTANCE_CAST (pfm,
  54                                   PANGO_TYPE_FT2_FONT_MAP,
  55                                   PangoFT2FontMap);
  56   pango_dpi_ = 1200;
  57   pango_ft2_font_map_set_resolution (pango_ft2_fontmap_,
  58                                      pango_dpi_, pango_dpi_);
  59
  60   pango_dict_ = new Scheme_hash_table;
  61 #endif
  62
  63   search_path_.parse_path (path);
  64 }
  65
  66 All_font_metrics::~All_font_metrics ()
  67 {
  68   otf_dict_->unprotect ();
  69
  70 #if HAVE_PANGO_FT2
  71   pango_dict_->unprotect ();
  72   g_object_unref (pango_ft2_fontmap_);
  73 #endif
  74 }
  75
  76 All_font_metrics::All_font_metrics (All_font_metrics const &)
  77 {
  78 }
  79
  80 #if HAVE_PANGO_FT2
  81
  82 Pango_font *
  83 All_font_metrics::find_pango_font (PangoFontDescription const *description,
  84                                    Real output_scale
  85                                    )
  86 {
  87   gchar *pango_fn = pango_font_description_to_filename (description);
  88   SCM key = ly_symbol2scm (pango_fn);
  89
  90   SCM val;
  91   if (!pango_dict_->try_retrieve (key, &val))
  92     {
  93       if (be_verbose_global)
  94         progress_indication ("\n[" + string (pango_fn));
  95
  96       Pango_font *pf = new Pango_font (pango_ft2_fontmap_,
  97                                        description,
  98                                        output_scale
  99                                        );
 100
 101       val = pf->self_scm ();
 102       pango_dict_->set (key, val);
 103       pf->unprotect ();
 104
 105       if (be_verbose_global)
 106         progress_indication ("]");
 107
 108       pf->description_ = scm_cons (SCM_BOOL_F,
 109                                    scm_from_double (1.0));
 110     }
 111   g_free (pango_fn);
 112   return dynamic_cast<Pango_font *> (unsmob_metrics (val));
 113 }
 114
 115 #endif
 116
 117
 118 Open_type_font *
 119 All_font_metrics::find_otf (string name)
 120 {
 121   SCM sname = ly_symbol2scm (name.c_str ());
 122   SCM val;
 123   if (!otf_dict_->try_retrieve (sname, &val))
 124     {
 125       string file_name;
 126
 127       if (file_name.empty ())
 128         file_name = search_path_.find (name + ".otf");
 129       if (file_name.empty ())
 130         return 0;
 131
 132       if (be_verbose_global)
 133         progress_indication ("\n[" + file_name);
 134
 135       val = Open_type_font::make_otf (file_name);
 136
 137       if (be_verbose_global)
 138         progress_indication ("]");
 139
 140       unsmob_metrics (val)->file_name_ = file_name;
 141       SCM name_string = ly_string2scm (name);
 142       unsmob_metrics (val)->description_ = scm_cons (name_string,
 143                                                      scm_from_double (1.0));
 144       otf_dict_->set (sname, val);
 145       unsmob_metrics (val)->unprotect ();
 146     }
 147
 148   return dynamic_cast<Open_type_font *> (unsmob_metrics (val));
 149 }
 150
 151 Font_metric *
 152 All_font_metrics::find_font (string name)
 153 {
 154   Font_metric *f = find_otf (name);
 155
 156   if (!f)
 157     {
 158       error (_f ("cannot find font: `%s'", name.c_str ()));
 159     }
 160
 161   return f;
 162 }
 163
 164 All_font_metrics *all_fonts_global;