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--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
   7
   8  */
   9
  10 #include "main.hh"
  11 #include "all-font-metrics.hh"
  12 #include "debug.hh"
  13 #include "warn.hh"
  14 #include "afm.hh"
  15 #include "tfm.hh"
  16 #include "lily-guile.hh"
  17 #include "tfm-reader.hh"
  18
  19 const char * default_font_sz_ = "cmr10";
  20
  21 All_font_metrics::All_font_metrics (String path)
  22 {
  23   search_path_.parse_path (path);
  24 }
  25
  26 Adobe_font_metric *
  27 All_font_metrics::find_afm (String name)
  28 {
  29   SCM sname = ly_symbol2scm (name.ch_C ());
  30   if (!afm_p_dict_.elem_b (sname))
  31     {
  32       String path = name  + ".afm";
  33       path = search_path_.find (path);
  34       if (path.empty_b ())
  35         return 0;
  36
  37       if (verbose_global_b)
  38         progress_indication ("[" + path);
  39       Adobe_font_metric * afm_p = read_afm_file (path);
  40
  41       afm_p->name_ = ly_symbol2scm (name.ch_C ());
  42
  43       if (verbose_global_b)
  44         progress_indication ("]");
  45
  46       afm_p_dict_.set (sname,afm_p->self_scm_);
  47     }
  48
  49   return dynamic_cast<Adobe_font_metric*> (unsmob_metrics (afm_p_dict_.get (sname)));
  50 }
  51
  52 Scaled_font_metric *
  53 All_font_metrics::find_scaled (String nm, int m)
  54 {
  55   Scaled_font_metric * s=0;
  56   String index =  nm + "@" + to_str (m);
  57   SCM sname = ly_symbol2scm (index.ch_C ());
  58
  59   Font_metric *fm =0;
  60   if (!scaled_p_dict_.elem_b (sname))
  61     {
  62       Font_metric *f = find_font (nm);
  63       s = new Scaled_font_metric (f, m);
  64       scaled_p_dict_.set (sname, s->self_scm_);
  65       fm =  s;
  66     }
  67   else
  68     fm = unsmob_metrics (scaled_p_dict_.get (sname));
  69
  70   return dynamic_cast<Scaled_font_metric*> (fm);
  71 }
  72
  73 Tex_font_metric *
  74 All_font_metrics::find_tfm (String name)
  75 {
  76   SCM sname = ly_symbol2scm (name.ch_C ());
  77   if (!tfm_p_dict_.elem_b (sname))
  78     {
  79       String path = name  + ".tfm";
  80       path = search_path_.find (path);
  81       if (path.empty_b ())
  82         return 0;
  83       if (verbose_global_b)
  84         progress_indication ("[" + path);
  85       Tex_font_metric   * tfm_p = Tex_font_metric_reader::read_file (path);
  86       tfm_p->name_ = ly_symbol2scm (name.ch_C( ));
  87
  88       if (verbose_global_b)
  89         progress_indication ("]");
  90
  91       tfm_p_dict_.set (sname, tfm_p->self_scm_);
  92     }
  93
  94   return
  95     dynamic_cast<Tex_font_metric*> (unsmob_metrics (tfm_p_dict_.get(sname)));
  96 }
  97
  98
  99 Font_metric *
 100 All_font_metrics::find_font (String name)
 101 {
 102   Font_metric * f=0;
 103   f = find_tfm (name);
 104   if (f)
 105     return f;
 106
 107   f= find_afm (name);
 108   if (f)
 109     return f;
 110
 111   warning (_f ("can't find font: `%s'", name.ch_C ()));
 112   warning (_ ("Loading default font"));
 113
 114   String def_name = default_font_sz_;
 115   SCM l = scm_assoc (ly_str02scm ("default"),
 116                      scm_eval (ly_symbol2scm ("cmr-alist")));
 117
 118   if (l != SCM_BOOL_F)
 119     def_name = ly_scm2string (gh_cdr (l));
 120
 121   f =  find_tfm (def_name);
 122   if (f)
 123     return f;
 124
 125   f= find_afm (def_name);
 126   if (f)
 127     return f;
 128
 129   error (_f ("can't find default font: `%s'", def_name.ch_C ()));
 130   error (_f ("(search path: `%s')", search_path_.str ()));
 131   error (_ ("Giving up"));
 132
 133   return 0;
 134 }
 135
 136 SCM
 137 All_font_metrics::font_descriptions () const
 138 {
 139   SCM l[] = {0,0,0};
 140
 141   l[0] = afm_p_dict_.to_alist ();
 142   l[1] = tfm_p_dict_.to_alist ();
 143   l[2] = scaled_p_dict_.to_alist ();
 144
 145   SCM list = SCM_EOL;
 146   for (int i=0; i < 3; i++)
 147     {
 148       for (SCM s = l[i];  gh_pair_p (s); s = gh_cdr (s))
 149         {
 150           Font_metric * fm = unsmob_metrics (gh_cdar (s));
 151
 152           list = gh_cons (fm->description (), list);
 153         }
 154     }
 155   return list;
 156 }
 157
 158
 159
 160 Font_metric*
 161 find_font (String name)
 162 {
 163   return   all_fonts_global_p->find_font (name);
 164 }