lily/all-font-metrics.cc

   1 /*
   2   all-font-metrics.cc -- implement All_font_metrics
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c) 1999--2009 Han-Wen Nienhuys <hanwen@xs4all.nl>
   7 */
   8
   9 #include "all-font-metrics.hh"
  10
  11 #include "string-convert.hh"
  12 #include "international.hh"
  13 #include "main.hh"
  14 #include "open-type-font.hh"
  15 #include "pango-font.hh"
  16 #include "scm-hash.hh"
  17 #include "warn.hh"
  18
  19
  20 Index_to_charcode_map const *
  21 All_font_metrics::get_index_to_charcode_map (string filename,
  22                                              int face_index,
  23                                              FT_Face face)
  24 {
  25   string key = filename + String_convert::int_string (face_index);
  26   if (filename_charcode_maps_map_.find (key)
  27       == filename_charcode_maps_map_.end ())
  28     filename_charcode_maps_map_[key] = make_index_to_charcode_map (face);
  29
  30   return &filename_charcode_maps_map_[key];
  31 }
  32
  33
  34 All_font_metrics::All_font_metrics (string path)
  35 {
  36   otf_dict_ = new Scheme_hash_table;
  37
  38 #if HAVE_PANGO_FT2
  39   PangoFontMap *pfm = pango_ft2_font_map_new ();
  40
  41   pango_ft2_fontmap_
  42     = G_TYPE_CHECK_INSTANCE_CAST (pfm,
  43                                   PANGO_TYPE_FT2_FONT_MAP,
  44                                   PangoFT2FontMap);
  45   pango_dpi_ = 1200;
  46   pango_ft2_font_map_set_resolution (pango_ft2_fontmap_,
  47                                      pango_dpi_, pango_dpi_);
  48
  49   pango_dict_ = new Scheme_hash_table;
  50 #endif
  51
  52   search_path_.parse_path (path);
  53 }
  54
  55 All_font_metrics::~All_font_metrics ()
  56 {
  57   otf_dict_->unprotect ();
  58
  59 #if HAVE_PANGO_FT2
  60   pango_dict_->unprotect ();
  61   g_object_unref (pango_ft2_fontmap_);
  62 #endif
  63 }
  64
  65 All_font_metrics::All_font_metrics (All_font_metrics const &)
  66 {
  67 }
  68
  69 #if HAVE_PANGO_FT2
  70
  71 Pango_font *
  72 All_font_metrics::find_pango_font (PangoFontDescription const *description,
  73                                    Real output_scale
  74                                    )
  75 {
  76   gchar *pango_fn = pango_font_description_to_filename (description);
  77   SCM key = ly_symbol2scm (pango_fn);
  78
  79   SCM val;
  80   if (!pango_dict_->try_retrieve (key, &val))
  81     {
  82       if (be_verbose_global)
  83         progress_indication ("\n[" + string (pango_fn));
  84
  85       Pango_font *pf = new Pango_font (pango_ft2_fontmap_,
  86                                        description,
  87                                        output_scale
  88                                        );
  89
  90       val = pf->self_scm ();
  91       pango_dict_->set (key, val);
  92       pf->unprotect ();
  93
  94       if (be_verbose_global)
  95         progress_indication ("]");
  96
  97       pf->description_ = scm_cons (SCM_BOOL_F,
  98                                    scm_from_double (1.0));
  99     }
 100   g_free (pango_fn);
 101   return dynamic_cast<Pango_font *> (unsmob_metrics (val));
 102 }
 103
 104 #endif
 105
 106
 107 Open_type_font *
 108 All_font_metrics::find_otf (string name)
 109 {
 110   SCM sname = ly_symbol2scm (name.c_str ());
 111   SCM val;
 112   if (!otf_dict_->try_retrieve (sname, &val))
 113     {
 114       string file_name;
 115
 116       if (file_name.empty ())
 117         file_name = search_path_.find (name + ".otf");
 118       if (file_name.empty ())
 119         return 0;
 120
 121       if (be_verbose_global)
 122         progress_indication ("\n[" + file_name);
 123
 124       val = Open_type_font::make_otf (file_name);
 125
 126       if (be_verbose_global)
 127         progress_indication ("]");
 128
 129       unsmob_metrics (val)->file_name_ = file_name;
 130       SCM name_string = ly_string2scm (name);
 131       unsmob_metrics (val)->description_ = scm_cons (name_string,
 132                                                      scm_from_double (1.0));
 133       otf_dict_->set (sname, val);
 134       unsmob_metrics (val)->unprotect ();
 135     }
 136
 137   return dynamic_cast<Open_type_font *> (unsmob_metrics (val));
 138 }
 139
 140 Font_metric *
 141 All_font_metrics::find_font (string name)
 142 {
 143   Font_metric *f = find_otf (name);
 144
 145   if (!f)
 146     {
 147       error (_f ("cannot find font: `%s'", name.c_str ()));
 148     }
 149
 150   return f;
 151 }
 152
 153 All_font_metrics *all_fonts_global;