2003 -> 2004

[lilypond.git] / lily / paper-def.cc

diff --git a/lily/paper-def.cc b/lily/paper-def.cc
index 551a757b714634feb0c3e408ff45f4126223b04a..27de71fa443b8f811d97553beebfe015692a1dad 100644 (file)
--- a/lily/paper-def.cc
+++ b/lily/paper-def.cc
@@ -3,22 +3,31 @@
 
   source file of the GNU LilyPond music typesetter
 
-  (c)  1997--2001 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+  (c) 1997--2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
 */
 
+
 #include <math.h>
 
+#include "virtual-font-metric.hh"
 #include "all-font-metrics.hh"
 #include "string.hh"
 #include "misc.hh"
 #include "paper-def.hh"
-#include "debug.hh"
+#include "warn.hh"
 #include "scaled-font-metric.hh"
 #include "main.hh"
-#include "scope.hh"
-#include "file-results.hh" // urg? header_global_p
+#include "scm-hash.hh"
+#include "input-file-results.hh" // urg? header_global
 #include "paper-outputter.hh"
+#include "ly-modules.hh"
 
+/*
+  This is an almost empty thing. The only substantial thing this class
+  handles, is scaling up and down to real-world dimensions (internally
+  dimensions are against global staff-space.)
+  
+ */
 Paper_def::Paper_def ()
 {
 }
@@ -33,43 +42,15 @@ Paper_def::Paper_def (Paper_def const&src)
 }
 
 
-Real
-Paper_def::get_var (String s) const
-{
-  return get_realvar (ly_symbol2scm (s.ch_C ()));
-}
-
-SCM
-Paper_def::get_scmvar (String s) const
-{
-  return  scope_p_->scm_elem (ly_symbol2scm (s.ch_C ()));
-}
 
 Real
 Paper_def::get_realvar (SCM s) const
 {
-  SCM val ;
-  if (!scope_p_->try_retrieve (s, &val))
-    {
-      programming_error ("unknown paper variable: " +  ly_symbol2string (s));
-      return 0.0;
-    }
-
-  Real sc = 1.0;
-  SCM ssc;
-  if (scope_p_->try_retrieve (ly_symbol2scm ("outputscale"), &ssc))
-    {
-      sc = gh_scm2double (ssc);
-    }
-  if (gh_number_p (val))
-    {
-      return gh_scm2double (val) / sc;
-    }
-  else
-    {
-      programming_error ("not a real variable");
-      return 0.0;
-    }
+  SCM val = lookup_variable (s);
+  SCM scale = lookup_variable (ly_symbol2scm ("outputscale"));
+  
+  Real sc = gh_scm2double (scale);
+  return gh_scm2double (val) / sc;
 }
 
 /*
@@ -79,47 +60,32 @@ Paper_def::get_realvar (SCM s) const
 Interval
 Paper_def::line_dimensions_int (int n) const
 {
-  Real lw =  get_var ("linewidth");
-  Real ind = n? 0.0:get_var ("indent");
+  Real lw =  get_realvar (ly_symbol2scm ("linewidth"));
+  Real ind = n? 0.0:get_realvar (ly_symbol2scm ("indent"));
 
   return Interval (ind, lw);
 }
 
 
 
-int Paper_def::score_count_i_ = 0;
-
-int
-Paper_def::get_next_score_count () const
-{
-  return score_count_i_ ++;
-}
-
-void
-Paper_def::reset_score_count ()
-{
-  score_count_i_ = 0;
-}
-
 
 Paper_outputter*
-Paper_def::paper_outputter_p () 
+Paper_def::get_paper_outputter (String outname)  const
 {
-  String outname = outname_str (); 
   progress_indication (_f ("paper output to `%s'...",
                           outname == "-" ? String ("<stdout>") : outname));
 
-  target_str_global_array.push (outname);
+  global_input_file->target_strings_.push (outname);
   Paper_outputter * po = new Paper_outputter (outname);
   Path p = split_path (outname);
   p.ext = "";
-  po->basename_ = p.str ();
+  po->basename_ = p.to_string ();
   return po;
 }
 
 
 /*
-  todo: use symbols and hashtable idx?
+  Todo: use symbols and hashtable idx?
 */
 Font_metric *
 Paper_def::find_font (SCM fn, Real m)
@@ -130,19 +96,32 @@ Paper_def::find_font (SCM fn, Real m)
   if (gh_pair_p (met))
     return unsmob_metrics (ly_cdr (met));
 
-  SCM ssc;
-  if (scope_p_->try_retrieve (ly_symbol2scm ("outputscale"), &ssc))
+  /*
+    Hmm. We're chaining font - metrics. Should consider wether to merge
+    virtual-font and scaled_font.
+   */
+  Font_metric*  f=0;
+  if (gh_list_p (fn))
     {
-      m /= gh_scm2double (ssc);
+      f = new Virtual_font_metric (fn, m, this); // TODO: GC protection.
+      
+      scaled_fonts_ = scm_acons (key, f->self_scm (), scaled_fonts_);
+      scm_gc_unprotect_object (f->self_scm ());
     }
-  
-  Font_metric*  f = all_fonts_global_p->find_font (ly_scm2string (fn));
-  SCM val = Scaled_font_metric::make_scaled_font_metric (f, m);
-  scaled_fonts_ = scm_acons (key, val, scaled_fonts_);
+  else
+    {
+      SCM scale_var = ly_module_lookup (scope_, ly_symbol2scm ("outputscale"));
 
-  scm_gc_unprotect_object (val);
+      m /= gh_scm2double (scm_variable_ref (scale_var));
 
-  return dynamic_cast<Scaled_font_metric*> (unsmob_metrics (val));
+      f = all_fonts_global->find_font (ly_scm2string (fn));
+      SCM val = Scaled_font_metric::make_scaled_font_metric (f, m);
+      scaled_fonts_ = scm_acons (key, val, scaled_fonts_);
+      f = unsmob_metrics (val);
+      scm_gc_unprotect_object (val);
+    }
+
+  return f;
 }
 
 
@@ -152,15 +131,24 @@ Paper_def::find_font (SCM fn, Real m)
 SCM
 Paper_def::font_descriptions ()const
 {
-
-  
   SCM l = SCM_EOL;
   for (SCM s = scaled_fonts_; gh_pair_p (s); s = ly_cdr (s))
     {
       SCM desc = ly_caar (s);
+      if (!gh_string_p (gh_car (desc)))
+       continue ;
+
       SCM mdesc = unsmob_metrics (ly_cdar (s))->description_;
 
       l = gh_cons (gh_cons (mdesc, desc), l);
     }
   return l;
 }
+
+Paper_def* 
+unsmob_paper (SCM x)
+{
+  return dynamic_cast<Paper_def*> (unsmob_music_output_def (x));
+}
+
+