lily/tfm.cc

   1 /*
   2   tfm.cc --  implement Tex_font_metric
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c) 1999 Jan Nieuwenhuizen <janneke@gnu.org>
   7
   8
   9   some code shamelessly copied from GNU fontutils-0.6/tfm/tfm_input.c
  10  */
  11
  12 #include "tfm.hh"
  13 #include "tfm-reader.hh"
  14 #include "string-convert.hh"
  15 #include "debug.hh"
  16 #include "warn.hh"
  17
  18 Box
  19 Tex_font_char_metric::dimensions () const
  20 {
  21   Real d = -depth_;
  22   return Box (Interval (0, width_),Interval ( d <? height_, d >? height_));
  23 }
  24
  25 Tex_font_char_metric::Tex_font_char_metric ()
  26 {
  27   exists_b_ = false;
  28   code_ = 0;;
  29   width_ = height_ = depth_ = italic_correction_ = 0;
  30   width_fix_ = height_fix_ = depth_fix_ = italic_correction_fix_ = 0;
  31 }
  32
  33 #define APPEND_CHAR_METRIC_ELT(k)  outstr += to_str (#k) + " "  + to_str (k ## _)  + "; "
  34
  35 String
  36 Tex_font_char_metric::str () const
  37 {
  38   String outstr ;
  39
  40   APPEND_CHAR_METRIC_ELT (exists_b);
  41   APPEND_CHAR_METRIC_ELT (code);
  42   APPEND_CHAR_METRIC_ELT (width);
  43   APPEND_CHAR_METRIC_ELT (height);
  44   APPEND_CHAR_METRIC_ELT (depth);
  45   APPEND_CHAR_METRIC_ELT (italic_correction);
  46
  47   return outstr + "\n";
  48 }
  49
  50 Tex_font_metric::Tex_font_metric ()
  51 {
  52 }
  53
  54 static Tex_font_char_metric dummy_static_char_metric;
  55
  56 Tex_font_char_metric const &
  57 Tex_font_metric::find_ascii (int ascii, bool warn) const
  58 {
  59   if (ascii < ascii_to_metric_idx_.size() && ascii_to_metric_idx_[ascii] >= 0)
  60     return char_metrics_[ascii_to_metric_idx_ [ascii]];
  61   else if (warn)
  62
  63     {
  64       warning (_f ("Can't find ascii character: `%d'", ascii));
  65     }
  66   return dummy_static_char_metric;
  67 }
  68
  69 Character_metric const*
  70 Tex_font_metric::get_char (int a, bool w) const
  71 {
  72   return &find_ascii (a, w);
  73 }
  74
  75
  76 String
  77 Tex_font_metric::str () const
  78 {
  79   String outstr;
  80   for (int i=0; i < char_metrics_.size (); i++)
  81     outstr += char_metrics_[i].str ();
  82
  83   return outstr;
  84 }
  85
  86 void
  87 Tex_font_metric::clear (int n)
  88 {
  89   for (int i=0; i < n; i++)
  90     ascii_to_metric_idx_.push (-1);
  91 }
  92
  93