X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Ftfm.cc;h=942cffb3afe8fe99394177d407adeb3a8964c955;hb=95e91ffb8d0d82efbda9d266c63d4ccf0bcc5133;hp=80b0f667d16d5440ea0d77b1af5631189c94669f;hpb=8628349cbe6f17176c6124731c9f2fb8d833ab60;p=lilypond.git

diff --git a/lily/tfm.cc b/lily/tfm.cc
index 80b0f667d1..942cffb3af 100644
--- a/lily/tfm.cc
+++ b/lily/tfm.cc
@@ -1,10 +1,9 @@
 /*   
-  tfm.cc --  implement Tex_font_metric
+  tfm.cc -- implement Tex_font_metric
   
   source file of the GNU LilyPond music typesetter
   
-  (c) 1999 Jan Nieuwenhuizen <janneke@gnu.org>
-  
+  (c) 1999--2004 Jan Nieuwenhuizen <janneke@gnu.org>
 
   some code shamelessly copied from GNU fontutils-0.6/tfm/tfm_input.c
  */
@@ -12,89 +11,133 @@
 #include "tfm.hh"
 #include "tfm-reader.hh"
 #include "string-convert.hh"
-#include "debug.hh"
 #include "warn.hh"
+#include "warn.hh"
+#include "dimensions.hh"
 
-Box
-Tex_font_char_metric::dimensions () const
-{
-  Real d = -depth_;
-  return Box (Interval (0, width_),Interval ( d <? height_, d >? height_));
-}
+static Tex_font_char_metric dummy_static_char_metric;
 
 Tex_font_char_metric::Tex_font_char_metric ()
 {
-  exists_b_ = false;
+  exists_ = false;
   code_ = 0;;
-  width_ = height_ = depth_ = italic_correction_ = 0;
-  width_fix_ = height_fix_ = depth_fix_ = italic_correction_fix_ = 0;
+  width_ = 0;
+  height_ = 0;
+  depth_ = 0;
+  italic_correction_ = 0;
+  width_fix_ = 0;
+  height_fix_ = 0;
+  depth_fix_ = 0;
+  italic_correction_fix_ = 0;
 }
 
-#define APPEND_CHAR_METRIC_ELT(k)  outstr += to_str (#k) + " "  + to_str (k ## _)  + "; "
-
-String
-Tex_font_char_metric::str () const
+Box
+Tex_font_char_metric::dimensions () const
 {
-  String outstr ;
-
-  APPEND_CHAR_METRIC_ELT (exists_b);
-  APPEND_CHAR_METRIC_ELT (code);
-  APPEND_CHAR_METRIC_ELT (width);
-  APPEND_CHAR_METRIC_ELT (height);
-  APPEND_CHAR_METRIC_ELT (depth);
-  APPEND_CHAR_METRIC_ELT (italic_correction);
+  if (!exists_)
+    {
+      Box b;
+      b.set_empty ();
+      return b;
+    }
+  
+  Real d = -depth_;
+
+  Real point_constant = 1 PT;
   
-  return outstr + "\n";
+  return Box (Interval (0, width_*point_constant ),
+	      Interval ((d <? height_)*point_constant,
+			(d >? height_)*point_constant));
 }
 
 Tex_font_metric::Tex_font_metric ()
 {
+  encoding_table_ = SCM_EOL;
 }
 
-static Tex_font_char_metric dummy_static_char_metric;
 
-Tex_font_char_metric const &
+
+void
+Tex_font_metric::derived_mark () const
+{
+  scm_gc_mark (encoding_table_);
+}
+
+Tex_font_char_metric const *
 Tex_font_metric::find_ascii (int ascii, bool warn) const
 {
-  if (ascii_to_metric_idx_[ascii] >= 0)
-    return char_metrics_[ascii_to_metric_idx_ [ascii]];
+  if (ascii >= 0 && ascii < ascii_to_metric_idx_.size ()
+      && ascii_to_metric_idx_[ascii] >= 0)
+    return & char_metrics_[ascii_to_metric_idx_ [ascii]];
   else if (warn)
-
-    {
-      warning (_f ("can't find ascii character `%d'", ascii));
-
-    }
-  return dummy_static_char_metric;  
+    warning (_f ("can't find ascii character: %d", ascii));
+  return &dummy_static_char_metric;  
 }
 
-Character_metric*
-Tex_font_metric::get_char (int a, bool w) const
+/* UGH: glyphs need not be consecutive in TFM. */
+int
+Tex_font_metric::count () const
 {
-  return &find_ascii (a, w);
+  for (int i = ascii_to_metric_idx_.size (); i--;)
+    if (ascii_to_metric_idx_[i] != -1)
+      return i + 1;
+  return 0;
 }
 
+Box
+Tex_font_metric::get_ascii_char (int a) const
+{
+  Box b = find_ascii (a)->dimensions ();
+  return b;
+}
 
-String
-Tex_font_metric::str () const
+SCM
+Tex_font_metric::make_tfm (String filename)
 {
-  String outstr;
-  for (int i=0; i < char_metrics_.size (); i++)
-    outstr += char_metrics_[i].str ();
+  Tex_font_metric *tfm = new Tex_font_metric;
+  Tex_font_metric_reader reader (filename);
+
+  tfm->info_ = reader.info_;
+  tfm->header_ = reader.header_;
+  tfm->char_metrics_ = reader.char_metrics_;
+  tfm->ascii_to_metric_idx_ = reader.ascii_to_metric_idx_;
+
   
-  return outstr;
+  tfm->encoding_table_ =
+    scm_call_1 (ly_scheme_function ("get-coding-table"),
+		scm_makfrom0str (tfm->coding_scheme ().to_str0 ()));
+
+  return tfm->self_scm ();
 }
 
-void
-Tex_font_metric::clear (int n)
+Real
+Tex_font_metric::design_size () const
 {
-  for (int i=0; i < n; i++)
-    ascii_to_metric_idx_.push (-1);
+  return info_.design_size;
 }
 
-void
-Tex_font_metric::read_file (String name)
+String
+Tex_font_metric::coding_scheme () const
 {
-  Tex_font_metric_reader tfm_reader (name);
-  *this = tfm_reader.read_tfm ();
+  String scm = info_.coding_scheme;
+
+  for(int i = 0; i < scm.length (); i++)
+    if (scm[i] == ' ')
+      scm[i] = '-';
+
+  return scm;
 }
 
+int
+Tex_font_metric::name_to_index (String s) const
+{
+  SCM sym = ly_symbol2scm (s.to_str0 ());
+
+  SCM idx = scm_hash_ref (encoding_table_, sym, SCM_BOOL_F);
+  if (ly_c_char_p (idx))
+    {
+      return (unsigned char) ly_scm2char (idx);
+    }
+  else
+    return -1;  
+}