release: 1.3.18

[lilypond.git] / lily / all-font-metrics.cc

diff --git a/lily/all-font-metrics.cc b/lily/all-font-metrics.cc
index 751e7ab15a8781f40e9827bfbb3020a83d9e320d..4b6e906139d10efad678b1e405e53738c6d815c9 100644 (file)
--- a/lily/all-font-metrics.cc
+++ b/lily/all-font-metrics.cc
@@ -1,65 +1,101 @@
-#include "pointer.hh"
+/*   
+  all-font-metrics.cc --  implement All_font_metrics
+  
+  source file of the GNU LilyPond music typesetter
+  
+  (c) 1999 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+  
+ */
+
 #include "main.hh"
-#include "all-fonts.hh"
+#include "all-font-metrics.hh"
 #include "debug.hh"
 #include "warn.hh"
 #include "afm.hh"
 #include "tfm.hh"
+#include "lily-guile.hh"
+#include "tfm-reader.hh"
 
 const char * default_font_sz_ = "cmr10";
 
-
-
 All_font_metrics::All_font_metrics (String path)
 {
   search_path_.parse_path (path);
 }
 
-
 Adobe_font_metric *
 All_font_metrics::find_afm (String name)
 {
-  if (!afm_p_dict_.elem_b (name))
+  SCM sname = ly_symbol2scm (name.ch_C ());
+  if (!afm_p_dict_.elem_b (sname))
     {
       String path = name  + ".afm";
       path = search_path_.find (path);
       if (path.empty_b ())
        return 0;
-      
-      *mlog << "[" << path;
-      Adobe_font_metric
-       * afm_p = new Adobe_font_metric (read_afm_file (path));
-      *mlog << "]" << flush ;
+      progress_indication ("[" + path);
+      Adobe_font_metric * afm_p = read_afm_file (path);
+
+      afm_p->name_str_ = name;
+      progress_indication ("]");
+
+      afm_p_dict_[sname] = afm_p->self_scm_;
+      scm_unprotect_object (afm_p->self_scm_);
+    }
+  
+  return dynamic_cast<Adobe_font_metric*> (unsmob_metrics (afm_p_dict_[sname]));
+}
+
+Scaled_font_metric * 
+All_font_metrics::find_scaled (String nm, int m)
+{
+  Scaled_font_metric * s=0;
+  String index =  nm + "@" + to_str (m);
+  SCM sname = ly_symbol2scm (index.ch_C ());
 
-      afm_p_dict_[name] = afm_p;
+  Font_metric *fm =0;
+  if (!scaled_p_dict_.elem_b (sname))
+    {
+      Font_metric *f = find_font (nm);
+      s = new Scaled_font_metric (f, m);
+      scaled_p_dict_[sname] = s->self_scm_;
+      fm =  s;
+      scm_unprotect_object (s->self_scm_);
     }
-  return afm_p_dict_[name];  
+  else
+    fm = unsmob_metrics (scaled_p_dict_[sname]);
+
+  return dynamic_cast<Scaled_font_metric*> (fm);
 }
 
 Tex_font_metric *
 All_font_metrics::find_tfm (String name)
 {
-  if (!tfm_p_dict_.elem_b (name))
+  SCM sname = ly_symbol2scm (name.ch_C ());  
+  if (!tfm_p_dict_.elem_b (sname))
     {
       String path = name  + ".tfm";
       path = search_path_.find (path);
       if (path.empty_b ())
        return 0;
-      
-      *mlog << "[" << path;
-      Tex_font_metric  * tfm_p = new Tex_font_metric;
-      tfm_p->read_file (path);
-      *mlog << "]" << flush ;
+      progress_indication ("[" + path);
+      Tex_font_metric  * tfm_p = Tex_font_metric_reader::read_file (path);
+      tfm_p->name_str_ = name;
+      progress_indication ("]");
 
-      tfm_p_dict_[name] = tfm_p;
+      tfm_p_dict_[sname] = tfm_p->self_scm_;
+      scm_unprotect_object (tfm_p->self_scm_);      
     }
-  return tfm_p_dict_[name];  
+    
+  return
+    dynamic_cast<Tex_font_metric*> (unsmob_metrics (tfm_p_dict_[sname]));
 }
 
 
 Font_metric *
 All_font_metrics::find_font (String name)
-{  Font_metric * f=0;
+{
+  Font_metric * f=0;
   f = find_tfm (name);
   if (f)
     return f;
@@ -68,10 +104,49 @@ All_font_metrics::find_font (String name)
   if (f)
     return f;
 
+  warning (_f ("Can't find font: `%s'", name.ch_C ()));
+  warning (_ ("Loading default font"));
+  
   f =  find_tfm (default_font_sz_);
   if (f)
     return f;
-  String s = _f("Can't find default font `%s\', giving up.", default_font_sz_);
-  s += String ("\n") + _f ("search path = %s", search_path_.str ());
-  error (s);
+  error (_f ("Can't find default font: `%s'", default_font_sz_));
+  error (_f ("(search path: `%s'", search_path_.str ()));
+  error (_ ("Giving up"));
+
+  return 0;
 }
+
+SCM
+All_font_metrics::font_descriptions () const
+{
+  SCM l[] = {0,0,0};
+
+  l[0] = afm_p_dict_.to_alist ();
+  l[1] = tfm_p_dict_.to_alist ();
+  l[2] = scaled_p_dict_.to_alist ();  
+
+  SCM list = SCM_EOL;
+  for (int i=0; i < 3; i++)
+    {
+      for (SCM s = l[i];  gh_pair_p (s); s = gh_cdr (s))
+       {
+         Font_metric * fm = unsmob_metrics (gh_cdar (s));
+
+         list = gh_cons (fm->description (), list);
+       }
+    }
+  return list;
+}
+
+Font_metric *
+unsmob_metrics( SCM s)
+{
+  if (SMOB_IS_TYPE_B(Font_metric, s))
+    return SMOB_TO_TYPE(Font_metric, s);
+  else
+    return 0;
+}
+
+#include "ly-smobs.icc"
+IMPLEMENT_SMOBS(Font_metric);