X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;ds=sidebyside;f=lily%2Fline-of-score.cc;h=62bd6a153d0b2ac5acc8711f8c0bb1f6a5b39441;hb=c21d49df60cb97801ab33ab8a1bad6f2c81cd820;hp=9e2e7edb0324927b4b50b3673610a581757cae7f;hpb=9efbad2d9487a05b04423e7e9f062968e8f8eaf4;p=lilypond.git

diff --git a/lily/line-of-score.cc b/lily/line-of-score.cc
index 9e2e7edb03..62bd6a153d 100644
--- a/lily/line-of-score.cc
+++ b/lily/line-of-score.cc
@@ -3,108 +3,353 @@
 
   source file of the GNU LilyPond music typesetter
 
-  (c) 1996,  1997--1998 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+  (c) 1996--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
 */
 
+#include "axis-group-interface.hh"
+#include "debug.hh"
 #include "line-of-score.hh"
-#include "spanner.hh"
-#include "atom.hh"
+#include "main.hh"
+#include "paper-column.hh"
 #include "paper-def.hh"
-#include "p-col.hh"
-#include "p-score.hh"
-
+#include "paper-outputter.hh"
+#include "paper-score.hh"
+#include "string.hh"
+#include "warn.hh"
+#include "dimensions.hh"
+#include "molecule.hh"
+#include "all-font-metrics.hh"
 
 Line_of_score::Line_of_score()
+  : Spanner (SCM_EOL)
 {
-  error_mark_b_ = 0;
-}
+  set_elt_pointer ("columns", SCM_EOL);
+  set_elt_pointer ("all-elements", SCM_EOL);
 
+  Axis_group_interface (this).set_interface ();
+  Axis_group_interface (this).set_axes (Y_AXIS,X_AXIS);
+}
 
-IMPLEMENT_IS_TYPE_B1(Line_of_score,Spanner);
+int
+Line_of_score::element_count () const
+{
+  return scm_ilength ( get_elt_pointer ("all-elements"));
+}
 
 void
-Line_of_score::add_element (Score_element*e)
+Line_of_score::typeset_element (Score_element * elem_p)
 {
-  // avoid excess dependencies.
-  if (!(e->axis_group_l_a_[0] || e->axis_group_l_a_[1]))
-    add_dependency (e);
+  elem_p->pscore_l_ = pscore_l_;
+  Pointer_group_interface (this, "all-elements").add_element (elem_p);
+  scm_unprotect_object (elem_p->self_scm_);
 }
 
-bool
-Line_of_score::contains_b (Paper_column const* c) const
+void
+Line_of_score::output_lines ()
 {
-  return cols.find_l ((Paper_column*)c);
+  for (SCM s = get_elt_pointer ("all-elements");
+       gh_pair_p (s); s = gh_cdr (s))
+    {
+      unsmob_element (gh_car (s))->do_break_processing ();
+    }
+  /*
+    fixups must be done in broken line_of_scores, because new elements
+    are put over there.  */
+  int count = 0;
+  for (int i=0; i < broken_into_l_arr_.size (); i++)
+    {
+      Score_element *se = broken_into_l_arr_[i];
+      SCM all = se->get_elt_pointer ("all-elements");
+      for (SCM s = all; gh_pair_p (s); s = gh_cdr (s))
+	{
+	  unsmob_element (gh_car (s))->fixup_refpoint ();
+	}
+      count += scm_ilength (all);
+    }
+
+  
+  /*
+    needed for doing items.
+   */
+  for (SCM s = get_elt_pointer ("all-elements");
+       gh_pair_p (s); s = gh_cdr (s))
+    {
+      unsmob_element (gh_car (s))->fixup_refpoint ();
+    }
+  
+  for (SCM s = get_elt_pointer ("all-elements");
+       gh_pair_p (s); s = gh_cdr (s))
+    {
+      unsmob_element (gh_car (s))->handle_broken_dependencies ();
+    }
+  handle_broken_dependencies ();
+
+  if (verbose_global_b)
+    progress_indication ( _f("Element count %d.",  count + element_count()));
+
+  
+  for (int i=0; i < broken_into_l_arr_.size (); i++)
+    {
+      Line_of_score *line_l = dynamic_cast<Line_of_score*> (broken_into_l_arr_[i]);
+
+      if (verbose_global_b)
+	progress_indication ("[");
+      line_l->post_processing ();
+
+      if (verbose_global_b)
+	{
+	  progress_indication (to_str (i));
+	  progress_indication ("]");
+	}
+    }
 }
 
-Line_of_score*
-Line_of_score::set_breaking (Array<Column_x_positions> const &breaking, int j) const
+// const?
+void
+Line_of_score::break_into_pieces (Array<Column_x_positions> const &breaking)
 {
-  const Array<Paper_column*> &curline (breaking[j].cols);
-  const Array<Paper_column*> &errors (breaking[j].error_col_l_arr_);
-  const Array<Real> &config (breaking[j].config);
-	
-  for (int i=0; i < errors.size(); i++)
-    errors[i]->error_mark_b_ = true;
-
-  Line_of_score *line_l=0;
-	
-  if (breaking.size() >1) 
-    {
-      line_l = dynamic_cast <Line_of_score*> (clone());
-    }
-  else 
-    line_l = (Line_of_score*) this;
-	
-  ((Array<Paper_column*> &)line_l->cols) = curline;
-  line_l->set_bounds(LEFT,curline[0]);
+  for (int i=0; i < breaking.size (); i++)
+    {
+      Line_of_score *line_l = dynamic_cast <Line_of_score*> (clone());
+      line_l->rank_i_ = i;
+      Link_array<Paper_column> c (breaking[i].cols_);
+      pscore_l_->typeset_line (line_l);
       
-  line_l->set_bounds(RIGHT,curline.top());
-	
-  for (int i=0; i < curline.size(); i++)
+      line_l->set_bound(LEFT,c[0]);
+      line_l->set_bound(RIGHT,c.top ());
+      for (int j=0; j < c.size(); j++)
+	{
+	  c[j]->translate_axis (breaking[i].config_[j],X_AXIS);
+	  c[j]->line_l_ = line_l;
+	}
+      
+      broken_into_l_arr_.push (line_l);
+    }
+}
+
+
+void
+Line_of_score::output_molecule (SCM expr, Offset o)
+{
+  SCM offset_sym = ly_symbol2scm ("translate-molecule");
+  SCM combine_sym = ly_symbol2scm ("combine-molecule");
+enter:
+
+  if (!gh_pair_p (expr))
+    return;
+  
+  SCM head =gh_car (expr);
+  if (head == offset_sym)
+    {
+      o += ly_scm2offset (gh_cadr (expr));
+      expr = gh_caddr (expr);
+      goto enter;
+    }
+  else if (head == combine_sym)
+    {
+      output_molecule (gh_cadr (expr), o);
+      expr = gh_caddr (expr);
+      goto enter;		// tail recursion
+    }
+  else
     {
-      curline[i]->translate_axis (config[i],X_AXIS);
-      curline[i]->line_l_ = (Line_of_score*)line_l;
+      pscore_l_->outputter_l_->
+	output_scheme (gh_list (ly_symbol2scm ("placebox"),
+				gh_double2scm (o[X_AXIS]),
+				gh_double2scm (o[Y_AXIS]),
+				expr,
+				SCM_UNDEFINED));
     }
+}
 
-  return line_l;
+void
+Line_of_score::output_scheme (SCM s)
+{
+  pscore_l_->outputter_l_->output_scheme (s);
 }
 
+void
+Line_of_score::add_column (Paper_column*p)
+{
+  SCM cs = get_elt_pointer ("columns");
+  Score_element * prev =  gh_pair_p (cs) ? unsmob_element (gh_car (cs)) : 0;
+  int rank = prev ? dynamic_cast<Paper_column*> (prev)->rank_i () + 1 : 0; 
+
+  p->set_rank (rank);
+  set_elt_pointer ("columns",  gh_cons (p->self_scm_, cs));
 
+  Axis_group_interface (this).add_element (p);
+  typeset_element (p);
+}
 
 
 void
-Line_of_score::do_print() const
+fixup_refpoints (SCM s)
 {
-  Spanner::do_print();
+  for (; gh_pair_p (s); s = gh_cdr (s))
+    {
+      Score_element * se = unsmob_element (gh_car (s));
+      if (se)
+	{
+	  se->fixup_refpoint ();
+	  if (!dynamic_cast<Line_of_score*> (se) && !se->parent_l (Y_AXIS))
+	    {
+	      programming_error ("No parent!");
+	    }
+	}
+    }
 }
 
-Interval
-Line_of_score::do_width() const
-{ 
-  return Spanner::do_width();
-}
 
-Link_array<Score_element>
-Line_of_score::get_extra_dependencies () const
+void
+Line_of_score::pre_processing ()
 {
-  Link_array<Score_element> r;
-  for (int i=0; i < cols.size (); i++)
-    r.push (cols[i]);
-  return r;
+  for (SCM s = get_elt_pointer ("all-elements"); gh_pair_p (s); s = gh_cdr (s))
+    unsmob_element (gh_car (s))->discretionary_processing ();
+
+  if(verbose_global_b)
+    progress_indication ( _f("Element count %d ",  element_count ()));
+
+  
+  for (SCM s = get_elt_pointer ("all-elements"); gh_pair_p (s); s = gh_cdr (s))
+    unsmob_element (gh_car (s))->handle_prebroken_dependencies ();
+  
+  fixup_refpoints (get_elt_pointer ("all-elements"));
+  
+  for (SCM s = get_elt_pointer ("all-elements"); gh_pair_p (s); s = gh_cdr (s))
+    {
+      Score_element* sc = unsmob_element (gh_car (s));
+      sc->calculate_dependencies (PRECALCED, PRECALCING, ly_symbol2scm ("before-line-breaking-callback"));
+    }
+  
+  progress_indication ("\n" + _ ("Calculating column positions...") + " " );
+  for (SCM s = get_elt_pointer ("all-elements"); gh_pair_p (s); s = gh_cdr (s))
+    unsmob_element (gh_car (s))->do_space_processing ();
 }
 
 void
-Line_of_score::do_unlink () 
+Line_of_score::post_processing ()
 {
-  Spanner::do_unlink ();
-  for (int i=0; i < cols.size (); i++)
-    cols[i]->line_l_ =0;
-  cols.set_size (0);
+  for (SCM s = get_elt_pointer ("all-elements");
+       gh_pair_p (s); s = gh_cdr (s))
+    {
+      Score_element* sc = unsmob_element (gh_car (s));
+      sc->calculate_dependencies (POSTCALCED, POSTCALCING,
+				  ly_symbol2scm ("after-line-breaking-callback"));
+    }
+
+  Interval i(extent(Y_AXIS));
+  if (i.empty_b())
+    programming_error ("Huh?  Empty Line_of_score?");
+  else
+    translate_axis (- i[MAX], Y_AXIS);
+
+  Real height = i.length ();
+  if (height > 50 CM)
+    {
+      programming_error ("Improbable system height");
+      height = 50 CM;
+    }
+
+  /*
+    generate all molecules  to trigger all font loads.
+
+    (ugh. This is not very memory efficient.)  */
+  for (SCM s = get_elt_pointer ("all-elements"); gh_pair_p (s); s = gh_cdr (s))
+    unsmob_element (gh_car (s))->get_molecule ();
+  
+  /*
+    font defs;
+   */
+  SCM font_names = ly_quote_scm (all_fonts_global_p->font_descriptions ());  
+  output_scheme (gh_list (ly_symbol2scm ("define-fonts"),
+					font_names,
+					SCM_UNDEFINED));
+
+  /*
+    line preamble.
+   */
+  output_scheme (gh_list (ly_symbol2scm ("start-line"),
+			  gh_double2scm (height),
+			  SCM_UNDEFINED));
+  
+  Real il = paper_l ()->get_var ("interline");
+
+  /*
+    all elements.
+   */ 
+  for (SCM s = get_elt_pointer ("all-elements"); gh_pair_p (s); s = gh_cdr (s))
+    {
+      Score_element * sc =  unsmob_element (gh_car (s));
+      Molecule m = sc->get_molecule ();
+      
+      Offset o (sc->relative_coordinate (this, X_AXIS),
+		sc->relative_coordinate (this, Y_AXIS));
+
+      SCM e = sc->get_elt_property ("extra-offset");
+      if (gh_pair_p (e))
+	{
+	  o[X_AXIS] += il * gh_scm2double (gh_car (e));
+	  o[Y_AXIS] += il * gh_scm2double (gh_cdr (e));      
+	}
+
+      output_molecule (m.get_expr (), o);
+    }
+  output_scheme (gh_list (ly_symbol2scm ("stop-line"), SCM_UNDEFINED));
 }
 
 
-void
-Line_of_score::do_junk_links () 
+Link_array<Item> 
+Line_of_score::broken_col_range (Item const*l, Item const*r) const
 {
-  cols.set_size (0);
+  Link_array<Item> ret;
+
+  l = l->column_l ();
+  r = r->column_l ();
+  SCM s = get_elt_pointer ("columns");
+
+  while (gh_pair_p (s) && gh_car (s) != r->self_scm_)
+    s = gh_cdr  (s);
+    
+  if (gh_pair_p (s))
+    s = gh_cdr (s);
+  
+  while (gh_pair_p (s) && gh_car (s) != l->self_scm_)
+    {
+      Paper_column *c
+	= dynamic_cast<Paper_column*> (unsmob_element (gh_car (s)));
+      if (c->breakable_b () && !c->line_l_)
+	ret.push (c);
+
+      s = gh_cdr  (s);
+    }
+
+  ret.reverse ();
+  return ret;
+}
+
+/**
+   Return all columns, but filter out any unused columns , since they might
+   disrupt the spacing problem.
+ */
+Link_array<Paper_column>
+Line_of_score::column_l_arr ()const
+{
+  Link_array<Paper_column> acs
+    = Pointer_group_interface__extract_elements (this, (Paper_column*) 0, "columns");
+  bool bfound = false;
+  for (int i= acs.size (); i -- ; )
+    {
+      bool brb = acs[i]->breakable_b();
+      bfound = bfound || brb;
+
+      /*
+	the last column should be breakable. Weed out any columns that
+	seem empty. We need to retain breakable columns, in case
+	someone forced a breakpoint.
+      */
+      if (!bfound || !acs[i]->used_b ())
+	acs.del (i);
+    }
+  return acs;
 }