#include "paper-column-engraver.hh"
#include "system.hh"
-#include "international.hh"
-#include "axis-group-interface.hh"
-#include "context.hh"
#include "item.hh"
-#include "note-spacing.hh"
#include "paper-column.hh"
-#include "pointer-group-interface.hh"
#include "staff-spacing.hh"
-#include "system.hh"
+#include "note-spacing.hh"
+#include "pointer-group-interface.hh"
+#include "context.hh"
+#include "score-context.hh"
+#include "axis-group-interface.hh"
#include "warn.hh"
#include "translator.icc"
breaks_ = 0;
system_ = 0;
first_ = true;
+ last_breakable_column_ = 0;
+ last_breakable_moment_ = Moment (-1);
}
void
if (command_column_)
{
command_column_->set_property ("line-break-permission", ly_symbol2scm ("allow"));
- command_column_->set_property ("page-turn-permission", ly_symbol2scm ("allow"));
system_->set_bound (RIGHT, command_column_);
}
}
*/
Paper_column *p1 = make_paper_column ("NonMusicalPaperColumn");
Paper_column *p2 = make_paper_column ("PaperColumn");
- /*
- The columns are timestamped with now_mom () in
- stop_translation_timestep. Cannot happen now, because the
- first column is sometimes created before now_mom is initialised.
- */
+
+ SCM m = now_mom ().smobbed_copy ();
+ p1->set_property ("when", m);
+ p2->set_property ("when", m);
set_columns (p1, p2);
}
ly_symbol2scm ("spacing-wishes"),
gi.grob ());
}
-
void
Paper_column_engraver::acknowledge_note_spacing (Grob_info gi)
{
system_->add_column (musical_column_);
}
-IMPLEMENT_TRANSLATOR_LISTENER (Paper_column_engraver, break);
-void
-Paper_column_engraver::listen_break (Stream_event *ev)
+bool
+Paper_column_engraver::try_music (Music *m)
{
- break_events_.push_back (ev);
+ break_events_.push_back (m);
+
+ return true;
}
void
for (vsize i = 0; i < break_events_.size (); i++)
{
string prefix;
- SCM name_sym = break_events_[i]->get_property ("class");
- string name = ly_scm2string (scm_symbol_to_string (name_sym));
- size_t end = name.rfind ("-event");
- if (end)
- prefix = name.substr (0, end);
+ SCM name = break_events_[i]->get_property ("name");
+ if (name == ly_symbol2scm ("LineBreakEvent"))
+ prefix = "line-break";
+ else if (name == ly_symbol2scm ("PageBreakEvent"))
+ prefix = "page-break";
+ else if (name == ly_symbol2scm ("PageTurnEvent"))
+ prefix = "page-turn";
else
{
programming_error ("Paper_column_engraver doesn't know about this break-event");
return;
}
-
string perm_str = prefix + "-permission";
string pen_str = prefix + "-penalty";
void
Paper_column_engraver::stop_translation_timestep ()
{
- SCM m = now_mom ().smobbed_copy ();
- command_column_->set_property ("when", m);
- musical_column_->set_property ("when", m);
-
for (vsize i = 0; i < items_.size (); i++)
{
Item *elem = items_[i];
else if (Paper_column::is_breakable (command_column_))
{
breaks_++;
-
+ last_breakable_column_ = command_column_;
+ last_breakable_moment_ = now_mom ();
if (! (breaks_%8))
progress_indication ("[" + to_string (breaks_) + "]");
}
+ SCM page_br = get_property ("allowPageTurn");
+ if (scm_is_pair (page_br) && last_breakable_moment_ >= Rational (0))
+ {
+ SCM pen = scm_cdr (page_br);
+ Moment *m = unsmob_moment (scm_car (page_br));
+ if (m && scm_is_number (pen) && *m <= last_breakable_moment_)
+ {
+ last_breakable_column_->set_property ("page-turn-permission", ly_symbol2scm ("allow"));
+ last_breakable_column_->set_property ("page-turn-penalty", pen);
+ }
+ }
+
context ()->get_score_context ()->unset_property (ly_symbol2scm ("forbidBreak"));
+ context ()->get_score_context ()->unset_property (ly_symbol2scm ("allowPageTurn"));
first_ = false;
break_events_.clear ();
/* accept */ "break-event",
/* read */
"forbidBreak "
- ,
+ "allowPageTurn",
/* write */
"forbidBreak "
+ "allowPageTurn "
"currentCommandColumn "
- "currentMusicalColumn "
- );
+ "currentMusicalColumn");