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/*
slur-grav.cc -- implement Slur_engraver
(c) 1997--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
#include "musical-request.hh"
#include "slur-engraver.hh"
#include "slur.hh"
#include "debug.hh"
#include "note-column.hh"
#include "translator-group.hh"
#include "engraver.hh"
#include "spanner.hh"
class Slur_engraver : public Engraver
{
Link_array<Span_req> requests_arr_;
Link_array<Span_req> new_slur_req_l_arr_;
Link_array<Grob> slur_l_stack_;
Link_array<Grob> end_slur_l_arr_;
Moment last_start_;
void set_melisma (bool);
protected:
virtual bool try_music (Music*);
virtual void acknowledge_grob (Grob_info);
virtual void stop_translation_timestep ();
virtual void start_translation_timestep ();
virtual void do_removal_processing ();
virtual void create_grobs ();
public:
VIRTUAL_COPY_CONS (Translator);
Slur_engraver ();
};
Slur_engraver::Slur_engraver ()
{
last_start_ = Moment (-1);
}
bool
Slur_engraver::try_music (Music *req_l)
{
if (Span_req *sl = dynamic_cast <Span_req *> (req_l))
{
String t = ly_scm2string (sl->get_mus_property ("span-type"));
if (t == "abort")
{
for (int i = 0; i < slur_l_stack_.size (); i++)
{
slur_l_stack_[i]->suicide ();
}
slur_l_stack_.clear ();
for (int i = 0; i < end_slur_l_arr_.size (); i++)
{
end_slur_l_arr_[i]->suicide ();
}
end_slur_l_arr_.clear ();
requests_arr_.clear ();
new_slur_req_l_arr_.clear ();
}
else if (t == "slur")
{
/*
Let's not start more than one slur per moment.
*/
if (sl->get_span_dir() == START)
{
if (now_mom () > last_start_)
{
new_slur_req_l_arr_.push (sl);
last_start_ = now_mom ();
return true;
}
}
else
{
new_slur_req_l_arr_.push (sl);
return true;
}
}
}
return false;
}
void
Slur_engraver::set_melisma (bool m)
{
daddy_trans_l_->set_property ("slurMelismaBusy", m ? SCM_BOOL_T :SCM_BOOL_F);
}
void
Slur_engraver::acknowledge_grob (Grob_info info)
{
if (Note_column::has_interface (info.elem_l_))
{
Grob *e =info.elem_l_;
for (int i = 0; i < slur_l_stack_.size (); i++)
Slur::add_column (slur_l_stack_[i], e);
for (int i = 0; i < end_slur_l_arr_.size (); i++)
Slur::add_column (end_slur_l_arr_[i], e);
}
}
void
Slur_engraver::do_removal_processing ()
{
for (int i = 0; i < slur_l_stack_.size (); i++)
{
#if 0
typeset_grob (slur_l_stack_[i]);
#else
/*
Let's not typeset unterminated stuff
*/
slur_l_stack_[i]->suicide ();
#endif
}
slur_l_stack_.clear ();
SCM wg = get_property ("weAreGraceContext");
bool wgb = to_boolean (wg);
if (!wgb)
for (int i=0; i < requests_arr_.size (); i++)
{
requests_arr_[i]->origin ()->warning (_ ("unterminated slur"));
}
}
void
Slur_engraver::create_grobs ()
{
Link_array<Grob> start_slur_l_arr;
for (int i=0; i< new_slur_req_l_arr_.size (); i++)
{
Span_req* slur_req_l = new_slur_req_l_arr_[i];
// end slur: move the slur to other array
if (slur_req_l->get_span_dir() == STOP)
{
if (slur_l_stack_.empty ())
slur_req_l->origin ()->warning (_f ("can't find start of slur"));
else
{
Grob* slur = slur_l_stack_.pop ();
SCM s = get_property ("slurEndAttachment");
if (gh_symbol_p (s))
{
index_set_cell (slur->get_grob_property ("attachment"), STOP, s);
}
end_slur_l_arr_.push (slur);
requests_arr_.pop ();
}
}
else if (slur_req_l->get_span_dir() == START)
{
// push a new slur onto stack.
// (use temp. array to wait for all slur STOPs)
Grob* slur = new Spanner (get_property ("Slur"));
Slur::set_interface (slur);
SCM s = get_property ("slurBeginAttachment");
if (gh_symbol_p (s))
{
index_set_cell (slur->get_grob_property ("attachment"), START, s);
}
start_slur_l_arr.push (slur);
requests_arr_.push (slur_req_l);
announce_grob (slur, slur_req_l);
}
}
for (int i=0; i < start_slur_l_arr.size (); i++)
slur_l_stack_.push (start_slur_l_arr[i]);
new_slur_req_l_arr_.clear ();
}
void
Slur_engraver::stop_translation_timestep ()
{
for (int i = 0; i < end_slur_l_arr_.size (); i++)
{
typeset_grob (end_slur_l_arr_[i]);
}
end_slur_l_arr_.clear ();
}
void
Slur_engraver::start_translation_timestep ()
{
new_slur_req_l_arr_.clear ();
SCM m = get_property ("automaticMelismata");
if (to_boolean (m))
{
set_melisma (slur_l_stack_.size ());
}
}
ADD_THIS_TRANSLATOR (Slur_engraver);
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