*** empty log message ***

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

diff --git a/lily/paper-def.cc b/lily/paper-def.cc
index 1b3a74b2a5f581636d1e6eca6a2841ae41b97ea5..9eeab12ffc65e1d898146fc1c34be3aa9455139e 100644 (file)
--- a/lily/paper-def.cc
+++ b/lily/paper-def.cc
@@ -1,96 +1,162 @@
+/*
+  paper-def.cc -- implement Paper_def
+
+  source file of the GNU LilyPond music typesetter
+
+  (c)  1997--2003 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 "lookup.hh"
-#include "dimen.hh"
+#include "warn.hh"
+#include "scaled-font-metric.hh"
+#include "main.hh"
+#include "scm-hash.hh"
+#include "input-file-results.hh" // urg? header_global
+#include "paper-outputter.hh"
+#include "ly-modules.hh"
 
 
-
-// golden ratio
-const Real PHI = (1+sqrt(5))/2;
-
-// see  Roelofs, p. 57
-Real
-Paper_def::duration_to_dist(Moment d)
+/*
+  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 ()
 {
-    if (!d)
-       return 0;
-    
-    return whole_width * pow(geometric_, log_2(d));
 }
 
-Real
-Paper_def::rule_thickness()const
+Paper_def::~Paper_def ()
 {
-    return 0.4 PT;
 }
 
-Paper_def::Paper_def(Lookup *l)
+Paper_def::Paper_def (Paper_def const&src)
+  : Music_output_def (src)
 {
-    lookup_p_ = l;
-    linewidth = 15 *CM_TO_PT;          // in cm for now
-    whole_width = 8 * note_width();
-    geometric_ = sqrt(2);
-    outfile = "lelie.out";
 }
 
-Paper_def::~Paper_def()
-{
-    delete lookup_p_;
-}
-Paper_def::Paper_def(Paper_def const&s)
+
+Real
+Paper_def::get_var (String s) const
 {
-    lookup_p_ = new Lookup(*s.lookup_p_);
-    geometric_ = s.geometric_;
-    whole_width = s.whole_width;
-    outfile = s.outfile;
-    linewidth = s.linewidth;
+  return get_realvar (ly_symbol2scm (s.to_str0 ()));
 }
 
-void
-Paper_def::set(Lookup*l)
+Real
+Paper_def::get_realvar (SCM s) const
 {
-    assert(l != lookup_p_);
-    delete lookup_p_;
-    lookup_p_ = l;
+  SCM val = lookup_variable (s);
+  SCM scale = lookup_variable (ly_symbol2scm ("outputscale"));
+  
+  Real sc = gh_scm2double (scale);
+  return gh_scm2double (val) / sc;
 }
 
-Real
-Paper_def::interline() const
+/*
+  FIXME. This is broken until we have a generic way of
+  putting lists inside the \paper block.
+ */
+Interval
+Paper_def::line_dimensions_int (int n) const
 {
-    return lookup_p_->ball(4).dim.y.length();
+  Real lw =  get_var ("linewidth");
+  Real ind = n? 0.0:get_var ("indent");
+
+  return Interval (ind, lw);
 }
 
-Real
-Paper_def::internote() const
+
+
+int Paper_def::score_count_ = 0;
+
+int
+Paper_def::get_next_score_count () const
 {
-    return lookup_p_->internote();
+  return score_count_ ++;
 }
-Real
-Paper_def::note_width()const
+
+void
+Paper_def::reset_score_count ()
 {
-    return lookup_p_->ball(4).dim.x.length( );
+  score_count_ = 0;
 }
-Real
-Paper_def::standard_height() const
+
+
+Paper_outputter*
+Paper_def::get_paper_outputter () 
 {
-    return 20 PT;
+  String outname = outname_string (); 
+  progress_indication (_f ("paper output to `%s'...",
+                          outname == "-" ? String ("<stdout>") : 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.string ();
+  return po;
 }
 
-void
-Paper_def::print() const
+
+/*
+  todo: use symbols and hashtable idx?
+
+
+*/
+Font_metric *
+Paper_def::find_font (SCM fn, Real m)
 {
-#ifndef NPRINT
-    mtor << "Paper {width: " << print_dimen(linewidth);
-    mtor << "whole: " << print_dimen(whole_width);
-    mtor << "out: " <<outfile;
-    lookup_p_->print();
-    mtor << "}\n";
-#endif
+  SCM key = gh_cons (fn, gh_double2scm (m));
+  SCM met = scm_assoc (key, scaled_fonts_);
+
+  if (gh_pair_p (met))
+    return unsmob_metrics (ly_cdr (met));
+
+  /*
+    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))
+    {
+      f = new Virtual_font_metric (fn, m, this);
+    }
+  else
+    {
+      SCM var =   ly_module_lookup (scope_, ly_symbol2scm ("outputscale"));
+      m /= gh_scm2double (scm_variable_ref (var));
+
+      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;
 }
-Lookup const *
-Paper_def::lookup_l()
+
+
+/*
+  Return alist to translate internally used fonts back to real-world
+  coordinates.  */
+SCM
+Paper_def::font_descriptions ()const
 {
-    return lookup_p_;
+  SCM l = SCM_EOL;
+  for (SCM s = scaled_fonts_; gh_pair_p (s); s = ly_cdr (s))
+    {
+      SCM desc = ly_caar (s);
+      SCM mdesc = unsmob_metrics (ly_cdar (s))->description_;
+
+      l = gh_cons (gh_cons (mdesc, desc), l);
+    }
+  return l;
 }