]> git.donarmstrong.com Git - lilypond.git/blobdiff - lily/paper-book.cc
Web-es: update Manuals.
[lilypond.git] / lily / paper-book.cc
index c986136fc103f86fc9e52c4c8f0fabb9b209932c..c17ed576f1895c0a91febb29164ea9987dda1b0f 100644 (file)
@@ -1,44 +1,51 @@
 /*
-  paper-book.cc -- implement Paper_book
+  This file is part of LilyPond, the GNU music typesetter.
 
-  source file of the GNU LilyPond music typesetter
+  Copyright (C) 2004--2015 Jan Nieuwenhuizen <janneke@gnu.org>
 
-  (c) 2004 Jan Nieuwenhuizen <janneke@gnu.org>
+  LilyPond is free software: you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+
+  LilyPond is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with LilyPond.  If not, see <http://www.gnu.org/licenses/>.
 */
 
-#include "ly-module.hh"
-#include "main.hh"
-#include "page.hh"
 #include "paper-book.hh"
-#include "paper-def.hh"
-#include "paper-outputter.hh"
-#include "paper-line.hh"
+
+#include "grob.hh"
+#include "international.hh"
+#include "main.hh"
+#include "output-def.hh"
+#include "paper-column.hh"
 #include "paper-score.hh"
-#include "stencil.hh"
+#include "paper-system.hh"
+#include "text-interface.hh"
 #include "warn.hh"
-
-// JUNKME
-SCM
-stencil2line (Stencil stil, bool is_title = false)
-{
-  static SCM z;
-  if (!z)
-    z = scm_permanent_object (ly_offset2scm (Offset (0, 0)));
-  Offset dim = Offset (stil.extent (X_AXIS).length (),
-                      stil.extent (Y_AXIS).length ());
-  Paper_line *pl = new Paper_line (dim, scm_cons (stil.smobbed_copy (),
-                                                 SCM_EOL),
-                                  -10001 * is_title, is_title);
-
-  return scm_gc_unprotect_object (pl->self_scm ());
-}
+#include "program-option.hh"
+#include "page-marker.hh"
+#include "ly-module.hh"
+#include "lily-imports.hh"
 
 
 Paper_book::Paper_book ()
 {
-  copyright_ = SCM_EOL;
-  tagline_ = SCM_EOL;
-  
+  header_ = SCM_EOL;
+  header_0_ = SCM_EOL;
+  pages_ = SCM_BOOL_F;
+  scores_ = SCM_EOL;
+  bookparts_ = SCM_EOL;
+  performances_ = SCM_EOL;
+  systems_ = SCM_BOOL_F;
+
+  paper_ = 0;
+  parent_ = 0;
   smobify_self ();
 }
 
@@ -46,314 +53,617 @@ Paper_book::~Paper_book ()
 {
 }
 
-#include "ly-smobs.icc"
+const char * const Paper_book::type_p_name_ = "ly:paper-book?";
+
+SCM
+Paper_book::mark_smob () const
+{
+  if (paper_)
+    scm_gc_mark (paper_->self_scm ());
+  if (parent_)
+    scm_gc_mark (parent_->self_scm ());
+  scm_gc_mark (header_);
+  scm_gc_mark (header_0_);
+  scm_gc_mark (pages_);
+  scm_gc_mark (performances_);
+  scm_gc_mark (scores_);
+  scm_gc_mark (bookparts_);
+  return systems_;
+}
 
-IMPLEMENT_DEFAULT_EQUAL_P (Paper_book);
-IMPLEMENT_SMOBS (Paper_book)
-IMPLEMENT_TYPE_P (Paper_book, "ly:paper-book?")
+Output_def *
+Paper_book::top_paper ()
+{
+  Output_def *paper = paper_;
+  while (paper->parent_)
+    paper = paper->parent_;
+  return paper;
+}
 
 SCM
-Paper_book::mark_smob (SCM smob)
+dump_fields ()
+{
+  SCM fields = SCM_EOL;
+  for (vsize i = dump_header_fieldnames_global.size (); i--;)
+    fields
+      = scm_cons (ly_symbol2scm (dump_header_fieldnames_global[i].c_str ()),
+                  fields);
+  return fields;
+}
+
+void
+Paper_book::add_score (SCM s)
+{
+  scores_ = scm_cons (s, scores_);
+}
+
+void
+Paper_book::add_bookpart (SCM p)
+{
+  bookparts_ = scm_cons (p, bookparts_);
+}
+
+void
+Paper_book::add_performance (SCM s)
 {
-  Paper_book *b = (Paper_book*) SCM_CELL_WORD_1 (smob);
-  for (int i = 0; i < b->headers_.size (); i++)
-    scm_gc_mark (b->headers_[i]);
-  for (int i = 0; i < b->global_headers_.size (); i++)
-    scm_gc_mark (b->global_headers_[i]);
-  for (int i = 0; i < b->papers_.size (); i++)
-    scm_gc_mark (b->papers_[i]->self_scm ());
-  for (int i = 0; i < b->scores_.size (); i++)
-    scm_gc_mark (b->scores_[i]);
-
-  scm_gc_mark (b->copyright_);
-  
-  return b->tagline_;
+  performances_ = scm_cons (s, performances_);
 }
 
-int
-Paper_book::print_smob (SCM smob, SCM port, scm_print_state*)
+long
+Paper_book::output_aux (SCM output_channel,
+                        bool is_last,
+                        long *first_page_number,
+                        long *first_performance_number)
 {
-  Paper_book *b = (Paper_book*) ly_cdr (smob);
-     
-  scm_puts ("#<", port);
-  scm_puts (classname (b), port);
-  scm_puts (" ", port);
-  //scm_puts (b->, port);
-  scm_puts (">", port);
-  return 1;
+  long page_nb = 0;
+  if (scm_is_pair (performances_))
+    {
+      Lily::write_performances_midis (performances (),
+                                      output_channel,
+                                      scm_from_long (*first_performance_number));
+      *first_performance_number += scm_ilength (performances_);
+    }
+
+  if (scm_is_pair (bookparts_))
+    {
+      for (SCM p = bookparts_; scm_is_pair (p); p = scm_cdr (p))
+        if (Paper_book *pbookpart = unsmob<Paper_book> (scm_car (p)))
+          {
+            bool is_last_part = (is_last && !scm_is_pair (scm_cdr (p)));
+            page_nb += pbookpart->output_aux (output_channel,
+                                              is_last_part,
+                                              first_page_number,
+                                              first_performance_number);
+          }
+    }
+  else
+    {
+      if (scm_is_null (scores_))
+        return 0;
+      paper_->set_variable (ly_symbol2scm ("first-page-number"),
+                            scm_from_long (*first_page_number));
+      paper_->set_variable (ly_symbol2scm ("is-last-bookpart"),
+                            ly_bool2scm (is_last));
+      /* Generate all stencils to trigger font loads.  */
+      page_nb = scm_ilength (pages ());
+      *first_page_number += page_nb;
+    }
+  return page_nb;
 }
 
 void
-Paper_book::output (String outname)
+Paper_book::output (SCM output_channel)
 {
-  if (!papers_.size ())
-    // FIXME: no end-output?
+  long first_page_number
+    = robust_scm2int (paper_->c_variable ("first-page-number"), 1);
+  long first_performance_number = 0;
+
+  /* FIXME: We need a line-width for ps output (framework-ps.scm:92).
+     If we don't have any, we take the paper-width unless we know
+     better which line-width to choose (e.g. if there are \bookparts
+     with different line-widths) and why we need it at all.
+  */
+
+  if (SCM_UNBNDP (paper_->c_variable ("line-width")))
+    paper_->set_variable (ly_symbol2scm ("line-width"),
+                          paper_->c_variable ("paper-width"));
+
+  if (!output_aux (output_channel,
+                   true,
+                   &first_page_number,
+                   &first_performance_number))
     return;
-    
-  /* Generate all stencils to trigger font loads.  */
-  SCM pages = this->pages ();
 
-  Paper_def *paper = papers_[0];
-  Paper_outputter *out = paper->get_paper_outputter (outname);
-  int page_count = scm_ilength (pages);
-  out->output_header (paper, scopes (0), page_count, false);
+  SCM scopes = SCM_EOL;
+  if (ly_is_module (header_))
+    scopes = scm_cons (header_, scopes);
+
+  string mod_nm = "scm framework-" + get_output_backend_name ();
+
+  SCM mod = scm_c_resolve_module (mod_nm.c_str ());
+
+  if (get_program_option ("print-pages"))
+    {
+      SCM framework = ly_module_lookup (mod,
+                                        ly_symbol2scm ("output-framework"));
+
+      if (scm_is_true (framework))
+        {
+          SCM func = scm_variable_ref (framework);
+          scm_call_4 (func,
+                      output_channel,
+                      self_scm (),
+                      scopes,
+                      dump_fields ());
+        }
+      else
+        warning (_f ("program option -dprint-pages not supported by backend `%s'",
+                     get_output_backend_name ()));
+    }
 
-#if 0
-  /* Ugh; fixme.  */
-  int paper_count = papers_.size ();
-  for (int i = 1; i < paper_count; i ++)
+  if (get_program_option ("preview"))
     {
-      SCM fonts = papers_[i]->font_descriptions ();
-      out->output_scheme (scm_list_3 (ly_symbol2scm ("define-fonts"),
-                                     papers_[i]->self_scm (),
-                                     //FIXME:
-                                     ly_quote_scm (ly_list_qsort_uniq_x (fonts))));
+      SCM framework
+        = ly_module_lookup (mod, ly_symbol2scm ("output-preview-framework"));
+
+      if (scm_is_true (framework))
+        {
+          SCM func = scm_variable_ref (framework);
+          scm_call_4 (func,
+                      output_channel,
+                      self_scm (),
+                      scopes,
+                      dump_fields ());
+        }
+      else
+        warning (_f ("program option -dpreview not supported by backend `%s'",
+                     get_output_backend_name ()));
     }
-#endif
+}
 
-  for (SCM s = pages; s != SCM_EOL; s = ly_cdr (s))
+void
+Paper_book::classic_output_aux (SCM output,
+                                long *first_performance_number)
+{
+  if (scm_is_pair (performances_))
     {
-      Page *p = unsmob_page (ly_car (s));
-      progress_indication ("[" + to_string (p->number_));
-      out->output_page (p, ly_cdr (s) == SCM_EOL);
-      progress_indication ("]");
+      Lily::write_performances_midis (performances (),
+                                      output,
+                                      scm_from_long (*first_performance_number));
+      *first_performance_number += scm_ilength (performances_);
     }
 
-  out->output_scheme (scm_list_1 (ly_symbol2scm ("end-output")));
+  /* Generate all stencils to trigger font loads.  */
+  systems ();
+}
+
+void
+Paper_book::classic_output (SCM output)
+{
+  long first_performance_number = 0;
+  classic_output_aux (output, &first_performance_number);
+
+  SCM scopes = SCM_EOL;
+  if (ly_is_module (header_))
+    scopes = scm_cons (header_, scopes);
+
+  if (ly_is_module (header_0_))
+    scopes = scm_cons (header_0_, scopes);
+
+  string format = get_output_backend_name ();
+  string mod_nm = "scm framework-" + format;
+
+  SCM mod = scm_c_resolve_module (mod_nm.c_str ());
+  SCM func = scm_c_module_lookup (mod, "output-classic-framework");
+
+  func = scm_variable_ref (func);
+  scm_call_4 (func,
+              output,
+              self_scm (),
+              scopes,
+              dump_fields ());
   progress_indication ("\n");
 }
 
-SCM
-Paper_book::scopes (int i)
+/* TODO: resurrect more complex user-tweaks for titling?  */
+Stencil
+Paper_book::book_title ()
 {
+  SCM title_func = paper_->lookup_variable (ly_symbol2scm ("book-title"));
+  Stencil title;
+
   SCM scopes = SCM_EOL;
-  if (headers_[i])
-    scopes = scm_cons (headers_[i], scopes);
-  if (global_headers_.size ()
-      && global_headers_[i] && global_headers_[i] != headers_[i])
-    scopes = scm_cons (global_headers_[i], scopes);
-  return scopes;
+  if (ly_is_module (header_))
+    scopes = scm_cons (header_, scopes);
+
+  SCM tit = SCM_EOL;
+  if (ly_is_procedure (title_func))
+    tit = scm_call_2 (title_func,
+                      paper_->self_scm (),
+                      scopes);
+
+  if (unsmob<Stencil> (tit))
+    title = *unsmob<Stencil> (tit);
+
+  if (!title.is_empty ())
+    title.align_to (Y_AXIS, UP);
+
+  return title;
 }
 
 Stencil
-Paper_book::title (int i)
+Paper_book::score_title (SCM header)
 {
-  /*
-    TODO: get from book-paper definition.
-   */
-  SCM user_title = ly_scheme_function ("user-title");
-  SCM book_title = ly_scheme_function ("book-title");
-  SCM score_title = ly_scheme_function ("score-title");
-  SCM field = (i == 0 ? ly_symbol2scm ("bookTitle")
-              : ly_symbol2scm ("scoreTitle"));
+  SCM title_func = paper_->lookup_variable (ly_symbol2scm ("score-title"));
 
   Stencil title;
-  SCM scopes = this->scopes (i);
-  SCM s = ly_modules_lookup (scopes, field);
-  if (s != SCM_UNDEFINED && scm_variable_bound_p (s) == SCM_BOOL_T)
-    title = *unsmob_stencil (scm_call_2 (user_title,
-                                       papers_[0]->self_scm (),
-                                       scm_variable_ref (s)));
-  else
-    title = *unsmob_stencil (scm_call_2 (i == 0 ? book_title : score_title,
-                                       papers_[0]->self_scm (),
-                                       scopes));
+
+  SCM scopes = SCM_EOL;
+  if (ly_is_module (header_))
+    scopes = scm_cons (header_, scopes);
+
+  if (ly_is_module (header))
+    scopes = scm_cons (header, scopes);
+
+  SCM tit = SCM_EOL;
+  if (ly_is_procedure (title_func))
+    tit = scm_call_2 (title_func,
+                      paper_->self_scm (),
+                      scopes);
+
+  if (unsmob<Stencil> (tit))
+    title = *unsmob<Stencil> (tit);
+
   if (!title.is_empty ())
     title.align_to (Y_AXIS, UP);
-  
+
   return title;
 }
 
 void
-Paper_book::classic_output (String outname)
+set_page_permission (SCM sys, SCM symbol, SCM permission)
 {
-  int count = scores_.size ();
-  Paper_outputter *out = papers_.top ()->get_paper_outputter (outname);
-  out->output_header (papers_.top (), scopes (count - 1), 0, true);
-
-  Paper_line *first = unsmob_paper_line (scm_vector_ref (scores_.top (),
-                                                        scm_int2num (0)));
-  Offset o (0, -0.5 * first->dim ()[Y_AXIS]);
-  int line_count = SCM_VECTOR_LENGTH ((SCM) scores_.top ());
-  for (int i = 0; i < line_count; i++)
+  if (Paper_score *ps = unsmob<Paper_score> (sys))
     {
-      /* In classic compatibility TeX tracks how large things are, and
-        advances the Y pos for us.  If we advance it too, we get too
-        much space.
-
-        FIXME: vague... why is TeX is different from other ouput
-               backends, why not fix the TeX backend? -- jcn */
-      if (output_format_global == "tex")
-       o = Offset (0, 0);
-
-      out->output_line (scm_vector_ref ((SCM) scores_.top (), scm_int2num (i)),
-                       &o, i == line_count - 1);
+      vector<Grob *> cols = ps->get_columns ();
+      if (cols.size ())
+        {
+          Paper_column *col = dynamic_cast<Paper_column *> (cols.back ());
+          col->set_property (symbol, permission);
+          col->find_prebroken_piece (LEFT)->set_property (symbol, permission);
+        }
     }
-  
-  out->output_scheme (scm_list_1 (ly_symbol2scm ("end-output")));
-  progress_indication ("\n");
+  else if (Prob *pb = unsmob<Prob> (sys))
+    pb->set_property (symbol, permission);
 }
 
-/* calculate book height, #lines, stencils.  */
+/* read the breakbefore property of a score block and set up the preceding
+   system-spec to honour it. That is, SYS should be the system spec that
+   immediately precedes the score (from which HEADER is taken)
+   in the get_system_specs () list */
 void
-Paper_book::init ()
+set_system_penalty (SCM sys, SCM header)
 {
-  int score_count = scores_.size ();
-
-  /* Calculate the full book height.  Hmm, can't we cache system
-     heights while making stencils?  */
-  height_ = 0;
-  for (int i = 0; i < score_count; i++)
+  if (ly_is_module (header))
     {
-      Stencil title = this->title (i);
-      if (!title.is_empty ())
-       height_ += title.extent (Y_AXIS).length ();
-
-      int line_count = SCM_VECTOR_LENGTH ((SCM) scores_[i]);
-      for (int j = 0; j < line_count; j++)
-       {
-         SCM s = scm_vector_ref ((SCM) scores_[i], scm_int2num (j));
-         height_ += unsmob_paper_line (s)->dim ()[Y_AXIS];
-       }
+      SCM force = ly_module_lookup (header, ly_symbol2scm ("breakbefore"));
+      if (SCM_VARIABLEP (force)
+          && scm_is_bool (SCM_VARIABLE_REF (force)))
+        {
+          if (to_boolean (SCM_VARIABLE_REF (force)))
+            {
+              set_page_permission (sys, ly_symbol2scm ("page-break-permission"),
+                                   ly_symbol2scm ("force"));
+              set_page_permission (sys, ly_symbol2scm ("line-break-permission"),
+                                   ly_symbol2scm ("force"));
+            }
+          else
+            set_page_permission (sys, ly_symbol2scm ("page-break-permission"),
+                                 SCM_EOL);
+        }
     }
+}
 
-  Paper_def *paper = papers_[0];
-  SCM scopes = this->scopes (0);
-
-  SCM make_tagline = paper->c_variable ("make-tagline");
-  tagline_ = scm_call_2 (make_tagline, paper->self_scm (), scopes);
-  Real tag_height = 0;
-  if (Stencil *s = unsmob_stencil (tagline_))
-    tag_height = s->extent (Y_AXIS).length ();
-  height_ += tag_height;
-
-  SCM make_copyright = paper->c_variable ("make-copyright");
-  copyright_ = scm_call_2 (make_copyright, paper->self_scm (), scopes);
-  Real copy_height = 0;
-  if (Stencil *s = unsmob_stencil (copyright_))
-    copy_height = s->extent (Y_AXIS).length ();
-  height_ += copy_height;
+void
+set_labels (SCM sys, SCM labels)
+{
+  if (Paper_score *ps = unsmob<Paper_score> (sys))
+    {
+      vector<Grob *> cols = ps->get_columns ();
+      if (cols.size ())
+        {
+          Paper_column *col = dynamic_cast<Paper_column *> (cols[0]);
+          col->set_property ("labels",
+                             scm_append_x (scm_list_2 (col->get_property ("labels"),
+                                                       labels)));
+          Paper_column *col_right
+            = dynamic_cast<Paper_column *> (col->find_prebroken_piece (RIGHT));
+          col_right->set_property ("labels",
+                                   scm_append_x (scm_list_2 (col_right->get_property ("labels"),
+                                                             labels)));
+        }
+    }
+  else if (Prob *pb = unsmob<Prob> (sys))
+    pb->set_property ("labels",
+                      scm_append_x (scm_list_2 (pb->get_property ("labels"),
+                                                labels)));
 }
 
 SCM
-Paper_book::lines ()
+Paper_book::get_score_title (SCM header)
 {
-  int score_count = scores_.size ();
-  SCM lines = SCM_EOL;
-  for (int i = 0; i < score_count; i++)
+  Stencil title = score_title (header);
+  if (title.is_empty ())
+    title = score_title (header_);
+  if (!title.is_empty ())
     {
-      Stencil title = this->title (i);      
-      if (!title.is_empty ())
-       lines = ly_snoc (stencil2line (title, true), lines);
-      lines = scm_append (scm_list_2 (lines, scm_vector_to_list (scores_[i])));
+      /*
+        TODO: this should come from the \layout {} block, which should
+        override settings from \paper {}
+      */
+      SCM props
+        = paper_->lookup_variable (ly_symbol2scm ("score-title-properties"));
+      Prob *ps = make_paper_system (props);
+      paper_system_set_stencil (ps, title);
+
+      return ps->self_scm ();
     }
-  //debug helper; ughr
-  int i = 0;
-  for (SCM s = lines; s != SCM_EOL; s = ly_cdr (s))
-    unsmob_paper_line (ly_car (s))->number_ = ++i;
-  return lines;
+
+  return SCM_BOOL_F;
 }
 
 SCM
-Paper_book::pages ()
+Paper_book::get_system_specs ()
 {
-  init ();
-  Page::page_count_ = 0;
-  Paper_def *paper = papers_[0];
-  Page *page = new Page (paper, 1);
-
-  Real text_height = page->text_height ();
-
-  Real copy_height = 0;
-  if (Stencil *s = unsmob_stencil (copyright_))
-    copy_height = s->extent (Y_AXIS).length ();
-
-  Real tag_height = 0;
-  if (Stencil *s = unsmob_stencil (tagline_))
-    tag_height = s->extent (Y_AXIS).length ();
-
-  SCM all = lines ();
-  SCM proc = paper->c_variable ("page-breaking");
-  SCM breaks = scm_apply_0 (proc, scm_list_n (all, scm_make_real (height_),
-                                             scm_make_real (text_height),
-                                             scm_make_real (-copy_height),
-                                             scm_make_real (-tag_height),
-                                             SCM_UNDEFINED));
-
-  /* Copyright on first page.  */
-  if (unsmob_stencil (copyright_))
-    page->copyright_ = copyright_;
-
-  SCM pages = SCM_EOL;
-  int page_count = SCM_VECTOR_LENGTH ((SCM) breaks);
-  int line = 1;
-  for (int i = 0; i < page_count; i++)
+  SCM system_specs = SCM_EOL;
+
+  Stencil title = book_title ();
+  if (!title.is_empty ())
     {
-      if (i)
-       page = new Page (paper, i + 1);
-
-      int next = i + 1 < page_count
-       ? ly_scm2int (scm_vector_ref (breaks, scm_int2num (i))) : 0;
-      while ((!next && all != SCM_EOL) || line <= next)
-       {
-         SCM s = ly_car (all);
-         page->lines_ = ly_snoc (s, page->lines_);
-         page->height_ += unsmob_paper_line (s)->dim ()[Y_AXIS];
-         page->line_count_++;
-         all = ly_cdr (all);
-         line++;
-       }
-      pages = scm_cons (page->self_scm (), pages);
+      SCM props
+        = paper_->lookup_variable (ly_symbol2scm ("book-title-properties"));
+      Prob *ps = make_paper_system (props);
+      paper_system_set_stencil (ps, title);
+
+      system_specs = scm_cons (ps->self_scm (), system_specs);
+      ps->unprotect ();
     }
 
-  /* Tagline on last page.  */
-  if (unsmob_stencil (tagline_))
-    page->tagline_ = tagline_;
+  SCM page_properties
+    = Lily::layout_extract_page_properties (paper_->self_scm ());
+
+  SCM header = SCM_EOL;
+  SCM labels = SCM_EOL;
+  for (SCM s = scm_reverse (scores_); scm_is_pair (s); s = scm_cdr (s))
+    {
+      if (ly_is_module (scm_car (s)))
+        {
+          header = scm_car (s);
+          if (scm_is_null (header_0_))
+            header_0_ = header;
+        }
+      else if (Page_marker *page_marker = unsmob<Page_marker> (scm_car (s)))
+        {
+          /* page markers are used to set page breaking/turning permission,
+             or to place bookmarking labels */
+          if (scm_is_symbol (page_marker->permission_symbol ()))
+            {
+              /* set previous element page break or turn permission */
+              if (scm_is_pair (system_specs))
+                set_page_permission (scm_car (system_specs),
+                                     page_marker->permission_symbol (),
+                                     page_marker->permission_value ());
+            }
+          if (scm_is_symbol (page_marker->label ()))
+            {
+              /* The next element label is to be set */
+              labels = scm_cons (page_marker->label (), labels);
+            }
+        }
+      else if (Music_output *mop = unsmob<Music_output> (scm_car (s)))
+        {
+          if (Paper_score *pscore = dynamic_cast<Paper_score *> (mop))
+            {
+              SCM title = get_score_title (header);
+
+              if (scm_is_pair (system_specs))
+                set_system_penalty (scm_car (system_specs), header);
+
+              if (unsmob<Prob> (title))
+                {
+                  system_specs = scm_cons (title, system_specs);
+                  unsmob<Prob> (title)->unprotect ();
+                }
+
+              header = SCM_EOL;
+              system_specs = scm_cons (pscore->self_scm (), system_specs);
+              if (scm_is_pair (labels))
+                {
+                  set_labels (scm_car (system_specs), labels);
+                  labels = SCM_EOL;
+                }
+            }
+          else
+            {
+              /*
+                Ignore MIDI
+              */
+            }
+        }
+      else if (Text_interface::is_markup_list (scm_car (s)))
+        {
+          SCM texts = Lily::interpret_markup_list (paper_->self_scm (),
+                                                   page_properties,
+                                                   scm_car (s));
+          Prob *first = 0;
+          Prob *last = 0;
+          for (SCM list = texts; scm_is_pair (list); list = scm_cdr (list))
+            {
+              SCM t = scm_car (list);
+              // TODO: init props
+              Prob *ps = make_paper_system (SCM_EOL);
+              ps->set_property ("page-break-permission",
+                                ly_symbol2scm ("allow"));
+              ps->set_property ("page-turn-permission",
+                                ly_symbol2scm ("allow"));
+              ps->set_property ("last-markup-line", SCM_BOOL_F);
+              ps->set_property ("first-markup-line", SCM_BOOL_F);
+
+              paper_system_set_stencil (ps, *unsmob<Stencil> (t));
+
+              SCM footnotes = get_footnotes (unsmob<Stencil> (t)->expr ());
+              ps->set_property ("footnotes", footnotes);
+              ps->set_property ("is-title", SCM_BOOL_T);
+              if (scm_is_eq (list, texts))
+                first = ps;
+              else
+                {
+                  // last line so far, in a multi-line paragraph
+                  last = ps;
+                  //Place closely to previous line, no stretching.
+                  ps->set_property ("tight-spacing", SCM_BOOL_T);
+                }
+              system_specs = scm_cons (ps->self_scm (), system_specs);
+              ps->unprotect ();
+
+              if (scm_is_pair (labels))
+                {
+                  set_labels (scm_car (system_specs), labels);
+                  labels = SCM_EOL;
+                }
+              // FIXME: figure out penalty.
+              //set_system_penalty (ps, scores_[i].header_);
+            }
+          /* Set properties to avoid widowed/orphaned lines.
+             Single-line markup_lists are excluded, but in future
+             we may want to add the case of a very short, single line. */
+          if (first && last)
+            {
+              last->set_property ("last-markup-line", SCM_BOOL_T);
+              first->set_property ("first-markup-line", SCM_BOOL_T);
+            }
+        }
+      else
+        assert (0);
+    }
 
-  return scm_reverse (pages);
+  system_specs = scm_reverse_x (system_specs, SCM_EOL);
+  return system_specs;
 }
 
-static SCM
-c_ragged_page_breaks (SCM lines, Real book_height, Real text_height,
-                     Real first, Real last)
+SCM
+Paper_book::systems ()
 {
-  int page_number = 0;
-  int page_count = int (book_height / text_height + 0.5);
-  SCM breaks = SCM_EOL;
-  Real page_height = text_height + first;
-  Real h = 0;
-  int number = 0;
-  for (SCM s = lines; s != SCM_EOL; s = ly_cdr (s))
+  if (scm_is_true (systems_))
+    return systems_;
+
+  systems_ = SCM_EOL;
+  if (scm_is_pair (bookparts_))
     {
-      Paper_line *pl = unsmob_paper_line (ly_car (s));
-      if (!pl->is_title () && h < page_height)
-       number++;
-      h += pl->dim ()[Y_AXIS];
-      if (!pl->is_title () && h > page_height)
-       {
-         breaks = ly_snoc (scm_int2num (number), breaks);
-         page_number++;
-         page_height = text_height + (page_number == page_count) * last;
-         h = 0;
-       }
-      if (ly_cdr (s) == SCM_EOL)
-       breaks = ly_snoc (scm_int2num (pl->number_), breaks);
+      SCM system_list = SCM_EOL;
+      for (SCM p = bookparts_; scm_is_pair (p); p = scm_cdr (p))
+        if (Paper_book *pbookpart = unsmob<Paper_book> (scm_car (p)))
+          system_list = scm_cons (pbookpart->systems (), system_list);
+      systems_ = scm_append (scm_reverse_x (system_list, SCM_EOL));
+    }
+  else
+    {
+      SCM specs = get_system_specs ();
+      for (SCM s = specs; scm_is_pair (s); s = scm_cdr (s))
+        {
+          if (Paper_score * pscore
+              = unsmob<Paper_score> (scm_car (s)))
+            {
+              SCM system_list
+                = scm_vector_to_list (pscore->get_paper_systems ());
+
+              systems_ = scm_reverse_x (system_list, systems_);
+            }
+          else
+            {
+              systems_ = scm_cons (scm_car (s), systems_);
+            }
+        }
+      systems_ = scm_reverse_x (systems_, SCM_EOL);
+
+      /* backwards compatibility for the old page breaker */
+      int i = 0;
+      Prob *last = 0;
+      for (SCM s = systems_; scm_is_pair (s); s = scm_cdr (s))
+        {
+          Prob *ps = unsmob<Prob> (scm_car (s));
+          ps->set_property ("number", scm_from_int (++i));
+
+          if (last
+              && to_boolean (last->get_property ("is-title"))
+              && !scm_is_number (ps->get_property ("penalty")))
+            ps->set_property ("penalty", scm_from_int (10000));
+          last = ps;
+
+          if (scm_is_pair (scm_cdr (s)))
+            {
+              SCM perm = ps->get_property ("page-break-permission");
+              Prob *next = unsmob<Prob> (scm_cadr (s));
+              if (scm_is_null (perm))
+                next->set_property ("penalty", scm_from_int (10001));
+              else if (scm_is_eq (perm, ly_symbol2scm ("force")))
+                next->set_property ("penalty", scm_from_int (-10001));
+            }
+        }
     }
 
-  return scm_vector (breaks);
+  return systems_;
 }
 
-LY_DEFINE (ly_ragged_page_breaks, "ly:ragged-page-breaks",
-          5, 0, 0, (SCM lines, SCM book, SCM text, SCM first, SCM last),
-          "Return a vector with line numbers of page breaks.")
+SCM
+Paper_book::pages ()
+{
+  if (scm_is_true (pages_))
+    return pages_;
+
+  pages_ = SCM_EOL;
+  if (scm_is_pair (bookparts_))
+    {
+      for (SCM p = bookparts_; scm_is_pair (p); p = scm_cdr (p))
+        if (Paper_book *pbookpart = unsmob<Paper_book> (scm_car (p)))
+          pages_ = scm_cons (pbookpart->pages (), pages_);
+      pages_ = scm_append (scm_reverse_x (pages_, SCM_EOL));
+    }
+  else if (scm_is_pair (scores_))
+    {
+      SCM page_breaking = paper_->c_variable ("page-breaking");
+      pages_ = scm_call_1 (page_breaking, self_scm ());
+
+      // Create all the page stencils.
+      SCM page_module = scm_c_resolve_module ("scm page");
+      SCM page_stencil = scm_c_module_lookup (page_module, "page-stencil");
+      page_stencil = scm_variable_ref (page_stencil);
+      for (SCM pages = pages_; scm_is_pair (pages); pages = scm_cdr (pages))
+        scm_call_1 (page_stencil, scm_car (pages));
+
+      // Perform any user-supplied post-processing.
+      SCM post_process = paper_->c_variable ("page-post-process");
+      if (ly_is_procedure (post_process))
+        scm_call_2 (post_process, paper_->self_scm (), pages_);
+
+      /* set systems_ from the pages */
+      if (scm_is_false (systems_))
+        {
+          systems_ = SCM_EOL;
+          for (SCM p = pages_; scm_is_pair (p); p = scm_cdr (p))
+            {
+              Prob *page = unsmob<Prob> (scm_car (p));
+              SCM systems = page->get_property ("lines");
+              systems_ = scm_cons (systems, systems_);
+            }
+          systems_ = scm_append (scm_reverse_x (systems_, SCM_EOL));
+        }
+    }
+  return pages_;
+}
+
+SCM
+Paper_book::performances () const
 {
-  SCM_ASSERT_TYPE (scm_pair_p (lines), lines, SCM_ARG1, __FUNCTION__, "list");
-  SCM_ASSERT_TYPE (ly_c_number_p (book), book, SCM_ARG2, __FUNCTION__, "real");
-  SCM_ASSERT_TYPE (ly_c_number_p (text), text, SCM_ARG2, __FUNCTION__, "real");
-  SCM_ASSERT_TYPE (ly_c_number_p (first), first, SCM_ARG2, __FUNCTION__, "real");
-  SCM_ASSERT_TYPE (ly_c_number_p (last), last, SCM_ARG2, __FUNCTION__, "real");
-
-  return c_ragged_page_breaks (lines,
-                              ly_scm2double (book), ly_scm2double (text),
-                              ly_scm2double (first), ly_scm2double (last));
+  return scm_reverse (performances_);
 }