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/*
paper-score.cc -- implement Paper_score
source file of the GNU LilyPond music typesetter
(c) 1996--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
*/
#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 "output-def.hh"
#include "paper-book.hh"
#include "paper-column.hh"
#include "scm-hash.hh"
#include "score.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_BOOL_F;
}
Paper_score::Paper_score (Paper_score const &s)
: Music_output (s)
{
assert (false);
}
void
Paper_score::derived_mark () const
{
if (layout_)
scm_gc_mark (layout_->self_scm ());
scm_gc_mark (systems_);
scm_gc_mark (paper_systems_);
}
void
Paper_score::typeset_system (System *system)
{
if (!system_)
system_ = system;
systems_ = scm_cons (system->self_scm (), systems_);
system->pscore_ = this;
system->layout_ = layout_;
system->unprotect ();
}
vector<vsize>
Paper_score::find_break_indices () const
{
vector<Grob*> all = root_system ()->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;
vector<Column_x_positions> sol;
message (_ ("Calculating line breaks...") + " ");
int system_count = robust_scm2int (layout ()->c_variable ("system-count"), 0);
if (system_count)
{
Constrained_breaking *b = new Constrained_breaking;
b->resize (system_count);
algorithm = b;
}
else
algorithm = new Gourlay_breaking;
algorithm->set_pscore (this);
sol = algorithm->solve ();
delete algorithm;
return sol;
}
void
Paper_score::process ()
{
if (be_verbose_global)
message (_f ("Element count %d (spanners %d) ",
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 */
vector<Grob*> pc (system_->columns ());
pc[0]->set_property ("line-break-permission", ly_symbol2scm ("allow"));
pc.back ()->set_property ("line-break-permission", ly_symbol2scm ("allow"));
system_->pre_processing ();
}
System *
Paper_score::root_system () const
{
return system_;
}
Output_def *
Paper_score::layout () const
{
return layout_;
}
SCM
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...") + " ");
paper_systems_ = system_->get_paper_systems ();
}
return paper_systems_;
}
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