/*
- 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--2014 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 <stdio.h>
+#include "paper-book.hh"
+#include "grob.hh"
+#include "international.hh"
#include "main.hh"
-#include "paper-book.hh"
+#include "output-def.hh"
+#include "paper-column.hh"
#include "paper-score.hh"
-#include "paper-def.hh"
-#include "stencil.hh"
-#include "paper-outputter.hh"
-
-// -- this simply adds one Page per \score
-// #define ONE_SCORE_PER_PAGE
-
-// WIP -- simplistic page interface
-// Do we need this at all? SCM, smob?
-class Page
-{
-public:
- Paper_def *paper_;
-
- SCM lines_;
- Stencil *header_;
- Stencil *footer_;
-
- /* actual height filled with text. */
- Real height_;
-
- //HMMM all this size stuff to paper/paper-outputter?
- Real hsize_;
- Real vsize_;
- Real foot_sep_;
- Real head_sep_;
-
- /* available area for text. */
- Real text_height ();
-
- Page (Paper_def*);
- void output (Paper_outputter*, bool);
-};
-
-Page::Page (Paper_def *paper)
-{
- paper_ = paper;
- height_ = 0;
- header_ = 0;
- footer_ = 0;
- lines_ = SCM_EOL;
-
- hsize_ = paper->get_realvar (ly_symbol2scm ("hsize"));
- vsize_ = paper->get_realvar (ly_symbol2scm ("vsize"));
- head_sep_ = 0; //paper->get_realvar (ly_symbol2scm ("head-sep"));
- foot_sep_ = 0; //paper->get_realvar (ly_symbol2scm ("foot-sep"));
+#include "paper-system.hh"
+#include "text-interface.hh"
+#include "warn.hh"
+#include "program-option.hh"
+#include "page-marker.hh"
+
+#include "ly-smobs.icc"
+
+Paper_book::Paper_book ()
+{
+ 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 ();
+}
+
+Paper_book::~Paper_book ()
+{
+}
+
+IMPLEMENT_DEFAULT_EQUAL_P (Paper_book);
+IMPLEMENT_SMOBS (Paper_book);
+IMPLEMENT_TYPE_P (Paper_book, "ly:paper-book?");
+
+SCM
+Paper_book::mark_smob (SCM smob)
+{
+ Paper_book *b = (Paper_book *) SCM_CELL_WORD_1 (smob);
+ if (b->paper_)
+ scm_gc_mark (b->paper_->self_scm ());
+ if (b->parent_)
+ scm_gc_mark (b->parent_->self_scm ());
+ scm_gc_mark (b->header_);
+ scm_gc_mark (b->header_0_);
+ scm_gc_mark (b->pages_);
+ scm_gc_mark (b->performances_);
+ scm_gc_mark (b->scores_);
+ scm_gc_mark (b->bookparts_);
+ return b->systems_;
+}
+
+int
+Paper_book::print_smob (SCM smob, SCM port, scm_print_state *)
+{
+ Paper_book *b = (Paper_book *) SCM_CELL_WORD_1 (smob);
+ (void)b;
+ scm_puts ("#<Paper_book>", port);
+ return 1;
+}
+
+Output_def *
+Paper_book::top_paper ()
+{
+ Output_def *paper = paper_;
+ while (paper->parent_)
+ paper = paper->parent_;
+ return paper;
+}
+
+SCM
+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
-Page::output (Paper_outputter *out, bool is_last)
+Paper_book::add_score (SCM s)
{
-#if ONE_SCORE_PER_PAGE
- int line_count = SCM_VECTOR_LENGTH ((SCM) lines_);
- for (int i = 0; i < line_count; i++)
- out->output_line (scm_vector_ref (lines_, scm_int2num (i)),
- is_last && i == line_count - 1);
-#else
- // TODO: header/footer etc
- out->output_scheme (scm_list_1 (ly_symbol2scm ("start-page")));
- for (SCM s = lines_; gh_pair_p (s); s = ly_cdr (s))
- out->output_line (ly_car (s), is_last && gh_pair_p (ly_cdr (s)));
- out->output_scheme (scm_list_2 (ly_symbol2scm ("stop-page"),
- gh_bool2scm (is_last)));
-#endif
+ scores_ = scm_cons (s, scores_);
}
-Real
-Page::text_height ()
+void
+Paper_book::add_bookpart (SCM p)
+{
+ bookparts_ = scm_cons (p, bookparts_);
+}
+
+void
+Paper_book::add_performance (SCM s)
{
- Real h = vsize_;
- if (header_)
- h -= header_->extent (Y_AXIS).length () + head_sep_;
- if (footer_)
- h -= footer_->extent (Y_AXIS).length () + foot_sep_;
- return h;
+ performances_ = scm_cons (s, performances_);
}
+long
+Paper_book::output_aux (SCM output_channel,
+ bool is_last,
+ long *first_page_number,
+ long *first_performance_number)
+{
+ long page_nb = 0;
+ if (scm_is_pair (performances_))
+ {
+ SCM proc = ly_lily_module_constant ("write-performances-midis");
-Paper_book *paper_book;
+ scm_call_3 (proc,
+ performances (),
+ output_channel,
+ scm_from_long (*first_performance_number));
+ *first_performance_number += scm_ilength (performances_);
+ }
-Paper_book::Paper_book ()
+ 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 (scores_ == SCM_EOL)
+ 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 (SCM output_channel)
{
+ 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 (paper_->c_variable ("line-width") == SCM_UNDEFINED)
+ 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;
+
+ 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 (framework != SCM_BOOL_F)
+ {
+ SCM func = scm_variable_ref (framework);
+ scm_apply_0 (func, scm_list_n (output_channel,
+ self_scm (),
+ scopes,
+ dump_fields (),
+ SCM_UNDEFINED));
+ }
+ else
+ warning (_f ("program option -dprint-pages not supported by backend `%s'",
+ get_output_backend_name ()));
+ }
+
+ if (get_program_option ("preview"))
+ {
+ SCM framework
+ = ly_module_lookup (mod, ly_symbol2scm ("output-preview-framework"));
+
+ if (framework != SCM_BOOL_F)
+ {
+ SCM func = scm_variable_ref (framework);
+ scm_apply_0 (func, scm_list_n (output_channel,
+ self_scm (),
+ scopes,
+ dump_fields (),
+ SCM_UNDEFINED));
+ }
+ else
+ warning (_f ("program option -dpreview not supported by backend `%s'",
+ get_output_backend_name ()));
+ }
}
void
-Paper_book::output ()
-{
- Paper_outputter *out = paper_scores_[0]->outputter_;
-
- Paper_def *paper = paper_scores_[0]->paper_;
- out->output_header (paper);
-
- if (paper_scores_[0]->book_title_)
- out->output_expr (paper_scores_[0]->book_title_->get_expr (),
- Offset (0, 0));
-
- Link_array<Page> *pages = get_pages ();
- int page_count = pages->size ();
- for (int i = 0; i < page_count; i++)
- (*pages)[i]->output (out, i + 1 == page_count);
-
- out->output_scheme (scm_list_1 (ly_symbol2scm ("end-output")));
+Paper_book::classic_output_aux (SCM output,
+ long *first_performance_number)
+{
+ if (scm_is_pair (performances_))
+ {
+ SCM proc = ly_lily_module_constant ("write-performances-midis");
+ scm_call_3 (proc,
+ performances (),
+ output,
+ scm_from_long (*first_performance_number));
+ *first_performance_number += scm_ilength (performances_);
+ }
+
+ /* 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_apply_0 (func, scm_list_n (output,
+ self_scm (),
+ scopes,
+ dump_fields (),
+ SCM_UNDEFINED));
+
progress_indication ("\n");
}
-/*
- WIP
-
- FIXME: titling is broken.
-
- TODO:
- * ->SCM?
- * decent page breaking algorithm
- * header / footer (generate per Page, with page#)
- * override: # pages, or pageBreakLines= #'(3 3 4), ?
- * what about between-system-breaking, can we junk that?
-
-*/
-Link_array<Page>*
-Paper_book::get_pages ()
-{
- Link_array<Page> *pages = new Link_array<Page>;
- Paper_def *paper = paper_scores_[0]->paper_;
- int score_count = paper_scores_.size ();
-
- /* Calculate the full book height. Hmm, can't we cache system
- heights while making stencils? */
- Real book_height = 0;
- for (int i = 0; i < score_count; i++)
- {
- Paper_score *pscore = paper_scores_[i];
- Stencil *title = (i == 0 ? pscore->book_title_ : pscore->score_title_);
- if (title)
- book_height += title->extent (Y_AXIS).length ();
-
- int line_count = SCM_VECTOR_LENGTH ((SCM) pscore->lines_);
- for (int j = 0; j < line_count; j++)
- {
- SCM line = scm_vector_ref (pscore->lines_, scm_int2num (j));
- book_height += ly_scm2offset (ly_car (line))[Y_AXIS];
- }
- }
-
- Page *page = new Page (paper);
- fprintf (stderr, "book_height: %f\n", book_height);
- fprintf (stderr, "vsize: %f\n", page->vsize_);
- fprintf (stderr, "pages: %f\n", book_height / page->text_height ());
-
-#if ONE_SCORE_PER_PAGE
- for (int i = 0; i < score_count; i++)
- {
- page->lines_ = paper_scores_[i]->lines_;
- pages->push (page);
- }
-#else
- /* Simplistic page breaking. */
- Real text_height = page->text_height ();
- for (int i = 0; i < score_count; i++)
- {
- Paper_score *pscore = paper_scores_[i];
- Stencil *title = (i == 0 ? pscore->book_title_ : pscore->score_title_);
- Real h = 0;
- if (title)
- h = title->extent (Y_AXIS).length ();
-
- int line_count = SCM_VECTOR_LENGTH ((SCM) pscore->lines_);
- for (int j = 0; j < line_count; j++)
- {
- SCM line = scm_vector_ref (pscore->lines_, scm_int2num (j));
- h += ly_scm2offset (ly_car (line))[Y_AXIS];
- if (page->height_ + h > text_height)
- {
- pages->push (page);
- page = new Page (paper);
- }
- if (page->height_ + h <= text_height || page->height_ == 0)
- {
- if (j == 0 && title)
- page->lines_
- = ly_snoc (scm_cons (ly_offset2scm (Offset (0, 0)),
- scm_list_1
- (scm_cons
- (ly_offset2scm (Offset (0, 0)),
- title->smobbed_copy ()))),
- page->lines_);
- page->lines_ = ly_snoc (line, page->lines_);
- page->height_ += h;
- h = 0;
- }
- }
- }
-#endif
-
- pages->push (page);
- return pages;
+/* 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 (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::score_title (SCM header)
+{
+ SCM title_func = paper_->lookup_variable (ly_symbol2scm ("score-title"));
+
+ Stencil title;
+
+ 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
+set_page_permission (SCM sys, SCM symbol, SCM permission)
+{
+ if (Paper_score *ps = dynamic_cast<Paper_score *> (unsmob_music_output (sys)))
+ {
+ 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);
+ }
+ }
+ else if (Prob *pb = unsmob_prob (sys))
+ pb->set_property (symbol, permission);
+}
+
+/* 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
+set_system_penalty (SCM sys, SCM header)
+{
+ if (ly_is_module (header))
+ {
+ 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);
+ }
+ }
+}
+
+void
+set_labels (SCM sys, SCM labels)
+{
+ if (Paper_score *ps = dynamic_cast<Paper_score *> (unsmob_music_output (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::get_score_title (SCM header)
+{
+ Stencil title = score_title (header);
+ if (title.is_empty ())
+ title = score_title (header_);
+ if (!title.is_empty ())
+ {
+ /*
+ 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 ();
+ }
+
+ return SCM_BOOL_F;
+}
+
+SCM
+Paper_book::get_system_specs ()
+{
+ SCM system_specs = SCM_EOL;
+
+ Stencil title = book_title ();
+ if (!title.is_empty ())
+ {
+ 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 ();
+ }
+
+ SCM page_properties
+ = scm_call_1 (ly_lily_module_constant ("layout-extract-page-properties"),
+ paper_->self_scm ());
+
+ SCM interpret_markup_list = ly_lily_module_constant ("interpret-markup-list");
+ 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 (header_0_ == SCM_EOL)
+ 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 = scm_call_3 (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 (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);
+ }
+
+ system_specs = scm_reverse_x (system_specs, SCM_EOL);
+ return system_specs;
+}
+
+SCM
+Paper_book::systems ()
+{
+ if (systems_ != SCM_BOOL_F)
+ return systems_;
+
+ systems_ = SCM_EOL;
+ if (scm_is_pair (bookparts_))
+ {
+ 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
+ = dynamic_cast<Paper_score *> (unsmob_music_output (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 (perm == SCM_EOL)
+ next->set_property ("penalty", scm_from_int (10001));
+ else if (perm == ly_symbol2scm ("force"))
+ next->set_property ("penalty", scm_from_int (-10001));
+ }
+ }
+ }
+
+ return systems_;
+}
+
+SCM
+Paper_book::pages ()
+{
+ if (SCM_BOOL_F != 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_append_x (scm_list_2 (pages_, pbookpart->pages ()));
+ }
+ else if (scm_is_pair (scores_))
+ {
+ SCM page_breaking = paper_->c_variable ("page-breaking");
+ pages_ = scm_apply_0 (page_breaking, scm_list_1 (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_apply_1 (page_stencil, scm_car (pages), SCM_EOL);
+
+ // Perform any user-supplied post-processing.
+ SCM post_process = paper_->c_variable ("page-post-process");
+ if (ly_is_procedure (post_process))
+ scm_apply_2 (post_process, paper_->self_scm (), pages_, SCM_EOL);
+
+ /* set systems_ from the pages */
+ if (systems_ == SCM_BOOL_F)
+ {
+ 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_append (scm_list_2 (systems_, systems));
+ }
+ }
+ }
+ return pages_;
+}
+
+SCM
+Paper_book::performances () const
+{
+ return scm_reverse (performances_);
}