source file of the GNU LilyPond music typesetter
- (c) 1996--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
+ (c) 1996--2008 Han-Wen Nienhuys <hanwen@xs4all.nl>
*/
#include "paper-score.hh"
#include "all-font-metrics.hh"
-#include "gourlay-breaking.hh"
+#include "book.hh"
+#include "international.hh"
#include "main.hh"
#include "misc.hh"
#include "output-def.hh"
#include "stencil.hh"
#include "system.hh"
#include "warn.hh"
+#include "constrained-breaking.hh"
Paper_score::Paper_score (Output_def *layout)
{
layout_ = layout;
system_ = 0;
systems_ = SCM_EOL;
- paper_systems_ = SCM_EOL;
+ paper_systems_ = SCM_BOOL_F;
}
Paper_score::Paper_score (Paper_score const &s)
system->unprotect ();
}
-Array<Column_x_positions>
+
+vector<vsize>
+Paper_score::find_break_indices () const
+{
+ vector<Grob*> all = root_system ()->used_columns ();
+ vector<vsize> retval;
+
+ for (vsize i = 0; i < all.size (); i++)
+ {
+ Item *it = dynamic_cast<Item*> (all[i]);
+ if (Paper_column::is_breakable (all[i])
+ && (i == 0 || it->find_prebroken_piece (LEFT))
+ && (i == all.size () - 1 || it->find_prebroken_piece (RIGHT)))
+ retval.push_back (i);
+ }
+
+ cols_ = all;
+ break_indices_ = retval;
+
+ return retval;
+}
+
+vector<vsize>
+Paper_score::get_break_indices () const
+{
+ if (break_indices_.empty ())
+ find_break_indices ();
+ return break_indices_;
+}
+
+vector<Grob*>
+Paper_score::get_columns () const
+{
+ if (cols_.empty ())
+ find_break_indices ();
+ return cols_;
+}
+
+vector<Column_x_positions>
Paper_score::calc_breaking ()
{
- Break_algorithm *algorithm = 0;
- Array<Column_x_positions> sol;
+ Constrained_breaking algorithm (this);
+ vector<Column_x_positions> sol;
- algorithm = new Gourlay_breaking;
- algorithm->set_pscore (this);
- sol = algorithm->solve ();
- delete algorithm;
+ message (_ ("Calculating line breaks...") + " ");
- return sol;
+ int system_count = robust_scm2int (layout ()->c_variable ("system-count"), 0);
+ if (system_count)
+ return algorithm.solve (0, VPOS, system_count);
+
+ return algorithm.best_solution (0, VPOS);
}
void
system_->element_count (),
system_->spanner_count ()));
- message (_ ("Preprocessing graphical objects...") + " ");
-
- /* FIXME: Check out why we need this - removing gives assertion failures
- down the road.
-
- doubly, also done in Score_engraver */
- Link_array<Grob> pc (system_->columns ());
- pc[0]->set_property ("breakable", SCM_BOOL_T);
- pc.top ()->set_property ("breakable", SCM_BOOL_T);
+ message (_ ("Preprocessing graphical objects..."));
system_->pre_processing ();
-
- Array<Column_x_positions> breaking = calc_breaking ();
- system_->break_into_pieces (breaking);
-
- paper_systems_ = system_->get_paper_systems ();
}
System *
}
SCM
-Paper_score::get_paper_systems () const
+Paper_score::get_paper_systems ()
{
+ if (paper_systems_ == SCM_BOOL_F)
+ {
+ vector<Column_x_positions> breaking = calc_breaking ();
+ system_->break_into_pieces (breaking);
+ message (_ ("Drawing systems...") + " ");
+ system_->do_break_substitution_and_fixup_refpoints ();
+ paper_systems_ = system_->get_paper_systems ();
+ }
return paper_systems_;
}
+
+
+Paper_score *
+unsmob_paper_score (SCM x)
+{
+ return dynamic_cast<Paper_score*> (unsmob_music_output (x));
+}