* flower

[lilypond.git] / lily / tfm.cc

diff --git a/lily/tfm.cc b/lily/tfm.cc
index 2ce125cdbe49a8b689e0688d714837871738735e..8d86135022a3c0378659ea13f44380412512f0f8 100644 (file)
--- a/lily/tfm.cc
+++ b/lily/tfm.cc
@@ -1,30 +1,25 @@
-/*   
-  tfm.cc --  implement Tex_font_metric
-  
+/*
+  tfm.cc -- implement Tex_font_metric
+
   source file of the GNU LilyPond music typesetter
-  
-  (c) 1999--2000 Jan Nieuwenhuizen <janneke@gnu.org>
-  
+
+  (c) 1999--2005 Jan Nieuwenhuizen <janneke@gnu.org>
 
   some code shamelessly copied from GNU fontutils-0.6/tfm/tfm_input.c
- */
+*/
 
+#include "file-name.hh"
 #include "tfm.hh"
 #include "tfm-reader.hh"
 #include "string-convert.hh"
-#include "debug.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_ = 0;
   height_ = 0;
@@ -36,74 +31,99 @@ Tex_font_char_metric::Tex_font_char_metric ()
   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);
-  
-  return outstr + "\n";
+  if (!exists_)
+    {
+      Box b;
+      b.set_empty ();
+      return b;
+    }
+
+  Real d = -depth_;
+  Real point_constant = 1 PT;
+
+  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;
+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 < ascii_to_metric_idx_.size() && 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;  
+/* UGH: glyphs need not be consecutive in TFM. */
+int
+Tex_font_metric::count () const
+{
+  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_char (int a) const
+Tex_font_metric::get_ascii_char (int a) const
 {
-  Box b = find_ascii (a)->dimensions () ;
+  Box b = find_ascii (a)->dimensions ();
   return b;
 }
 
-
-String
-Tex_font_metric::str () const
+SCM
+Tex_font_metric::make_tfm (String file_name)
 {
-  String outstr;
-  for (int i=0; i < char_metrics_.size (); i++)
-    outstr += char_metrics_[i].str ();
-  
-  return outstr;
+  Tex_font_metric *tfm = new Tex_font_metric;
+  Tex_font_metric_reader reader (file_name);
+
+  tfm->info_ = reader.info_;
+  tfm->header_ = reader.header_;
+  tfm->char_metrics_ = reader.char_metrics_;
+  tfm->ascii_to_metric_idx_ = reader.ascii_to_metric_idx_;
+
+  File_name fn (file_name);
+  tfm->font_name_ = fn.base_;
+  return tfm->self_scm ();
 }
 
+Tfm_info const &
+Tex_font_metric::info () const
+{
+  return info_;
+}
 
+Real
+Tex_font_metric::design_size () const
+{
+  return info_.design_size * point_constant;
+}
 
+String
+Tex_font_metric::font_name () const
+{
+  return font_name_;
+}
 
-SCM
-Tex_font_metric::make_tfm (String fn)
+int
+Tex_font_metric::name_to_index (String) const
 {
-  Tex_font_metric * tfm_p = new Tex_font_metric;
-  Tex_font_metric_reader reader (fn);
-
-  tfm_p->info_ = reader.info_;
-  tfm_p->header_ = reader.header_;
-  tfm_p->char_metrics_ = reader.char_metrics_;
-  tfm_p->ascii_to_metric_idx_ = reader.ascii_to_metric_idx_;
-  
-  return tfm_p->self_scm ();
+  assert (false);
 }