/*
- paper-score.cc -- implement Paper_score
+ This file is part of LilyPond, the GNU music typesetter.
- source file of the GNU LilyPond music typesetter
+ Copyright (C) 1996--2012 Han-Wen Nienhuys <hanwen@xs4all.nl>
- (c) 1996--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
+ 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 "paper-score.hh"
#include "all-font-metrics.hh"
#include "book.hh"
-#include "gourlay-breaking.hh"
#include "international.hh"
#include "main.hh"
#include "misc.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 ();
}
-std::vector<Column_x_positions>
-Paper_score::calc_breaking ()
+void
+Paper_score::find_break_indices () const
{
- Break_algorithm *algorithm = 0;
- std::vector<Column_x_positions> sol;
+ cols_ = root_system ()->used_columns ();
+ break_indices_.clear ();
+ break_ranks_.clear ();
+
+ for (vsize i = 0; i < cols_.size (); i++)
+ {
+ Item *it = dynamic_cast<Item *> (cols_[i]);
+ if (Paper_column::is_breakable (cols_[i])
+ && (i == 0 || it->find_prebroken_piece (LEFT))
+ && (i == cols_.size () - 1 || it->find_prebroken_piece (RIGHT)))
+ {
+ break_indices_.push_back (i);
+ break_ranks_.push_back (it->get_column ()->get_rank ());
+ }
+ }
+}
- algorithm = new Gourlay_breaking;
- algorithm->set_pscore (this);
- sol = algorithm->solve ();
- delete algorithm;
+vector<vsize>
+Paper_score::get_break_indices () const
+{
+ if (break_indices_.empty ())
+ find_break_indices ();
+ return break_indices_;
+}
- return sol;
+vector<Grob *>
+Paper_score::get_columns () const
+{
+ if (cols_.empty ())
+ find_break_indices ();
+ return cols_;
}
-void
-Paper_score::process ()
+vector<vsize>
+Paper_score::get_break_ranks () const
{
- if (be_verbose_global)
- message (_f ("Element count %d (spanners %d) ",
- system_->element_count (),
- system_->spanner_count ()));
+ if (break_ranks_.empty ())
+ find_break_indices ();
+ return break_ranks_;
+}
- message (_ ("Preprocessing graphical objects...") + " ");
+vector<Column_x_positions>
+Paper_score::calc_breaking ()
+{
+ Constrained_breaking algorithm (this);
+ vector<Column_x_positions> sol;
- /* FIXME: Check out why we need this - removing gives assertion failures
- down the road.
+ message (_ ("Calculating line breaks...") + " ");
- doubly, also done in Score_engraver */
- Link_array__Grob_ pc (system_->columns ());
- pc[0]->set_property ("breakable", SCM_BOOL_T);
- pc.back ()->set_property ("breakable", SCM_BOOL_T);
+ int system_count = robust_scm2int (layout ()->c_variable ("system-count"), 0);
+ if (system_count)
+ return algorithm.solve (0, VPOS, system_count);
- system_->pre_processing ();
+ return algorithm.best_solution (0, VPOS);
+}
- std::vector<Column_x_positions> breaking = calc_breaking ();
- system_->break_into_pieces (breaking);
+void
+Paper_score::process ()
+{
+ debug_output (_f ("Element count %d (spanners %d) ",
+ system_->element_count (),
+ system_->spanner_count ()));
- paper_systems_ = system_->get_paper_systems ();
+ message (_ ("Preprocessing graphical objects..."));
+
+ system_->pre_processing ();
}
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));
+}