/*
- slur-grav.cc -- implement Slur_engraver
+ slur-engraver.cc -- implement Slur_engraver
- (c) 1997--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1997--2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
-#include "proto.hh"
-#include "musical-request.hh"
-#include "slur-engraver.hh"
+#include "event.hh"
#include "slur.hh"
-#include "debug.hh"
+#include "warn.hh"
#include "note-column.hh"
#include "translator-group.hh"
+#include "engraver.hh"
+#include "spanner.hh"
+
+/*
+ TODO: junk nested slur functionality.
+ */
+class Slur_engraver : public Engraver
+{
+ Link_array<Music> events_;
+ Link_array<Music> new_slur_evs_;
+ Link_array<Grob> slur_stack_;
+ Link_array<Grob> end_slurs_;
+ 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 finalize ();
+ virtual void process_music ();
+
+public:
+ TRANSLATOR_DECLARATIONS (Slur_engraver);
+};
+
+Slur_engraver::Slur_engraver ()
+{
+ last_start_ = Moment (-1);
+}
bool
-Slur_engraver::do_try_music (Music *req_l)
+Slur_engraver::try_music (Music *ev)
{
- if (Span_req *sl = dynamic_cast <Span_req *> (req_l))
+ if (ev->is_mus_type ("slur-event"))
{
- if (sl->span_type_str_ != "slur")
- return false;
- new_slur_req_l_arr_.push (sl);
+ /*
+ Let's not start more than one slur per moment.
+ */
+ Direction d = to_dir (ev->get_mus_property ("span-direction"));
+ if (d == START)
+ {
+ if (now_mom () > last_start_)
+ {
+ new_slur_evs_.push (ev);
+ last_start_ = now_mom ();
+ }
- return true;
+ /*
+ But we swallow other slur events.
+ */
+
+ return true;
+ }
+ else if (d == STOP)
+ {
+ /*
+ Swallow other events.
+ */
+ for (int j = new_slur_evs_.size(); j--;)
+ {
+ Direction nd = to_dir (new_slur_evs_[j]->get_mus_property ("span-direction"));
+
+ if (nd == STOP)
+ return true;
+ }
+
+ new_slur_evs_.push (ev);
+ return true;
+ }
}
return false;
}
void
Slur_engraver::set_melisma (bool m)
{
- daddy_trans_l_->set_property ("slurMelismaBusy", m ? SCM_BOOL_T :SCM_BOOL_F);
+ daddy_trans_->set_property ("slurMelismaBusy", m ? SCM_BOOL_T :SCM_BOOL_F);
}
void
-Slur_engraver::acknowledge_element (Score_element_info info)
+Slur_engraver::acknowledge_grob (Grob_info info)
{
- if (dynamic_cast<Note_column *> (info.elem_l_))
+ if (Note_column::has_interface (info.grob_))
{
- Note_column *col_l =dynamic_cast<Note_column *> (info.elem_l_) ;// ugh
- for (int i = 0; i < slur_l_stack_.size(); i++)
- slur_l_stack_[i]->add_column (col_l);
- for (int i = 0; i < end_slur_l_arr_.size(); i++)
- end_slur_l_arr_[i]->add_column (col_l);
+ Grob *e =info.grob_;
+ for (int i = 0; i < slur_stack_.size (); i++)
+ Slur::add_column (slur_stack_[i], e);
+ for (int i = 0; i < end_slurs_.size (); i++)
+ Slur::add_column (end_slurs_[i], e);
}
}
void
-Slur_engraver::do_removal_processing ()
+Slur_engraver::finalize ()
{
- for (int i = 0; i < slur_l_stack_.size(); i++)
+ for (int i = 0; i < slur_stack_.size (); i++)
{
- typeset_element (slur_l_stack_[i]);
+ /*
+ Let's not typeset unterminated stuff
+ */
+ slur_stack_[i]->suicide ();
}
- 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++)
+ slur_stack_.clear ();
+
+ for (int i=0; i < events_.size (); i++)
{
- requests_arr_[i]->warning (_ ("unterminated slur"));
+ events_[i]->origin ()->warning (_ ("unterminated slur"));
}
}
void
-Slur_engraver::do_process_music()
+Slur_engraver::process_music ()
{
- Array<Slur*> start_slur_l_arr_;
- for (int i=0; i< new_slur_req_l_arr_.size(); i++)
+ Link_array<Grob> start_slurs;
+ for (int i=0; i< new_slur_evs_.size (); i++)
{
- Span_req* slur_req_l = new_slur_req_l_arr_[i];
+ Music* slur_ev = new_slur_evs_[i];
// end slur: move the slur to other array
- if (slur_req_l->span_dir_ == STOP)
+ Direction d = to_dir (slur_ev->get_mus_property ("span-direction"));
+ if (d== STOP)
{
- if (slur_l_stack_.empty())
-
- slur_req_l->warning (_f ("Can't find both ends of %s", _("slur")));
+ if (slur_stack_.empty ())
+ /* How to shut up this warning, when Voice_devnull_engraver has
+ eaten start event? */
+ slur_ev->origin ()->warning (_f ("can't find start of slur"));
else
{
- end_slur_l_arr_.push (slur_l_stack_.pop());
- requests_arr_.pop();
+ Grob* slur = slur_stack_.pop ();
+
+ end_slurs_.push (slur);
+ events_.pop ();
}
}
- else if (slur_req_l->span_dir_ == START)
+ else if (d == START)
{
// push a new slur onto stack.
- //(use temp. array to wait for all slur STOPs)
- Slur * s_p =new Slur;
+ // (use temp. array to wait for all slur STOPs)
+ Grob* slur = make_spanner ("Slur");
+ Slur::set_interface (slur); // cannot remove yet!
+
+
+ if (Direction updown = to_dir (slur_ev->get_mus_property ("direction")))
+ {
+ slur->set_grob_property ("direction", gh_int2scm (updown));
+ }
- requests_arr_.push (slur_req_l);
- start_slur_l_arr_.push (s_p);
- announce_element (Score_element_info (s_p, slur_req_l));
+ start_slurs.push (slur);
+ events_.push (slur_ev);
+ announce_grob (slur, slur_ev->self_scm ());
}
}
- for (int i=0; i < start_slur_l_arr_.size(); i++)
- slur_l_stack_.push (start_slur_l_arr_[i]);
-}
-void
-Slur_engraver::do_pre_move_processing()
-{
- for (int i = 0; i < end_slur_l_arr_.size(); i++)
- {
- typeset_element (end_slur_l_arr_[i]);
- }
- end_slur_l_arr_.clear();
+ slur_stack_.concat (start_slurs);
+
+ set_melisma (slur_stack_.size ());
+
+ new_slur_evs_.clear ();
}
void
-Slur_engraver::do_post_move_processing()
+Slur_engraver::stop_translation_timestep ()
{
- new_slur_req_l_arr_.clear();
- SCM m = get_property ("automaticMelismata");
- if (to_boolean (m))
+ for (int i = 0; i < end_slurs_.size (); i++)
{
- set_melisma (slur_l_stack_.size ());
+ typeset_grob (end_slurs_[i]);
}
+ end_slurs_.clear ();
+ new_slur_evs_.clear ();
}
-ADD_THIS_TRANSLATOR(Slur_engraver);
+
+ENTER_DESCRIPTION (Slur_engraver,
+/* descr */ "Build slurs from Slur_evs",
+/* creats*/ "Slur",
+/* accepts */ "slur-event",
+/* acks */ "note-column-interface",
+/* reads */ "slurMelismaBusy",
+/* write */ "");
projects / lilypond.git / blobdiff