/*
slur-engraver.cc -- implement Slur_engraver
- (c) 1997--2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1997--2005 Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
-#include "event.hh"
#include "slur.hh"
-#include "warn.hh"
#include "note-column.hh"
#include "context.hh"
-
+#include "directional-element-interface.hh"
#include "engraver.hh"
#include "spanner.hh"
+#include "tie.hh"
/*
- TODO: junk nested slur functionality.
- */
+ It is possible that a slur starts and ends on the same note. At
+ least, it is for phrasing slurs: a note can be both beginning and
+ ending of a phrase.
+*/
+
class Slur_engraver : public Engraver
{
- Link_array<Music> events_;
- Link_array<Music> new_slur_evs_;
- Link_array<Grob> slur_stack_;
+ Drul_array<Music *> events_;
+ Music *running_slur_start_;
+ Link_array<Grob> slurs_;
Link_array<Grob> end_slurs_;
- Moment last_start_;
void set_melisma (bool);
protected:
- virtual bool try_music (Music*);
+ virtual bool try_music (Music *);
virtual void acknowledge_grob (Grob_info);
virtual void stop_translation_timestep ();
virtual void finalize ();
Slur_engraver::Slur_engraver ()
{
- last_start_ = Moment (-1);
+ events_[START] = events_[STOP] = 0;
}
bool
-Slur_engraver::try_music (Music *ev)
+Slur_engraver::try_music (Music *m)
{
- if (ev->is_mus_type ("slur-event"))
+ if (m->is_mus_type ("slur-event"))
{
- /*
- Let's not start more than one slur per moment.
- */
- Direction d = to_dir (ev->get_property ("span-direction"));
+ Direction d = to_dir (m->get_property ("span-direction"));
if (d == START)
{
- if (now_mom () > last_start_)
- {
- new_slur_evs_.push (ev);
- last_start_ = now_mom ();
- }
-
- /*
- But we swallow other slur events.
- */
-
+ events_[START] = m;
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_property ("span-direction"));
-
- if (nd == STOP)
- return true;
- }
-
- new_slur_evs_.push (ev);
+ events_[STOP] = m;
return true;
}
}
void
Slur_engraver::set_melisma (bool m)
{
- daddy_context_->set_property ("slurMelismaBusy", m ? SCM_BOOL_T :SCM_BOOL_F);
+ context ()->set_property ("slurMelismaBusy", m ? SCM_BOOL_T : SCM_BOOL_F);
}
void
Slur_engraver::acknowledge_grob (Grob_info info)
{
- if (Note_column::has_interface (info.grob_))
+ Grob *e = info.grob ();
+ if (Note_column::has_interface (info.grob ()))
{
- 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++)
+ for (int i = slurs_.size (); i--;)
+ Slur::add_column (slurs_[i], e);
+ for (int i = end_slurs_.size (); i--;)
Slur::add_column (end_slurs_[i], e);
}
+ else
+ {
+ SCM inside = e->get_property ("inside-slur");
+ if (Tie::has_interface (e)
+ || to_boolean (inside))
+ {
+ for (int i = slurs_.size (); i--;)
+ Slur::add_extra_encompass (slurs_[i], e);
+ for (int i = end_slurs_.size (); i--;)
+ Slur::add_extra_encompass (end_slurs_[i], e);
+ }
+ else if (inside == SCM_BOOL_F)
+ {
+ Grob *slur = slurs_.size () ? slurs_[0] : 0;
+ slur = (end_slurs_.size () && !slur)
+ ? end_slurs_[0] : slur;
+
+ if (slur)
+ {
+ e->add_offset_callback (Slur::outside_slur_callback_proc, Y_AXIS);
+ e->set_property ("slur", slur->self_scm ());
+ }
+ }
+ }
}
void
Slur_engraver::finalize ()
{
- for (int i = 0; i < slur_stack_.size (); i++)
- {
- /*
- Let's not typeset unterminated stuff
- */
- slur_stack_[i]->suicide ();
- }
- slur_stack_.clear ();
-
- for (int i=0; i < events_.size (); i++)
- {
- events_[i]->origin ()->warning (_ ("unterminated slur"));
- }
+ if (slurs_.size ())
+ slurs_[0]->warning (_ ("unterminated slur"));
}
void
Slur_engraver::process_music ()
{
- Link_array<Grob> start_slurs;
- for (int i=0; i< new_slur_evs_.size (); i++)
+ if (events_[STOP])
{
- Music* slur_ev = new_slur_evs_[i];
- // end slur: move the slur to other array
- Direction d = to_dir (slur_ev->get_property ("span-direction"));
- if (d== STOP)
- {
- if (slur_stack_.is_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
- {
- Grob* slur = slur_stack_.pop ();
-
- end_slurs_.push (slur);
- events_.pop ();
- }
- }
- else if (d == START)
- {
- // push a new slur onto stack.
- // (use temp. array to wait for all slur STOPs)
- Grob* slur = make_spanner ("Slur");
- Slur::set_interface (slur); // cannot remove yet!
+ if (slurs_.size () == 0)
+ events_[STOP]->origin ()->warning (_ ("can't end slur"));
-
- if (Direction updown = to_dir (slur_ev->get_property ("direction")))
- {
- slur->set_property ("direction", gh_int2scm (updown));
- }
-
- start_slurs.push (slur);
- events_.push (slur_ev);
- announce_grob (slur, slur_ev->self_scm ());
- }
+ end_slurs_ = slurs_;
+ slurs_.clear ();
}
- slur_stack_.concat (start_slurs);
+ if (events_[START] && slurs_.is_empty ())
+ {
+ Music *ev = events_[START];
- set_melisma (slur_stack_.size ());
+ bool double_slurs = to_boolean (get_property ("doubleSlurs"));
- new_slur_evs_.clear ();
+ Grob *slur = make_spanner ("Slur", events_[START]->self_scm ());
+ Direction updown = to_dir (ev->get_property ("direction"));
+ if (updown && !double_slurs)
+ set_grob_direction (slur, updown);
+
+ slurs_.push (slur);
+
+ if (double_slurs)
+ {
+ set_grob_direction (slur, DOWN);
+ slur = make_spanner ("Slur", events_[START]->self_scm ());
+ set_grob_direction (slur, UP);
+ slurs_.push (slur);
+ }
+ }
+ set_melisma (slurs_.size ());
}
void
Slur_engraver::stop_translation_timestep ()
{
- for (int i = 0; i < end_slurs_.size (); i++)
- {
- typeset_grob (end_slurs_[i]);
- }
end_slurs_.clear ();
- new_slur_evs_.clear ();
+ events_[START] = events_[STOP] = 0;
}
-
-
-ENTER_DESCRIPTION (Slur_engraver,
-/* descr */ "Build slurs from Slur_evs",
-/* creats*/ "Slur",
-/* accepts */ "slur-event",
-/* acks */ "note-column-interface",
-/* reads */ "slurMelismaBusy",
-/* write */ "");
+ADD_TRANSLATOR (Slur_engraver,
+ /* descr */ "Build slurs grobs from slur events",
+ /* creats*/ "Slur",
+ /* accepts */ "slur-event",
+ /* acks */ "note-column-interface accidental-interface fingering-interface script-interface tie-interface text-script-interface",
+ /* reads */ "slurMelismaBusy doubleSlurs",
+ /* write */ "");
projects / lilypond.git / blobdiff