+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;
+}