/*
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 "new-slur.hh"
-#include "warn.hh"
+#include "slur.hh"
#include "note-column.hh"
#include "context.hh"
-
+#include "directional-element-interface.hh"
#include "engraver.hh"
#include "spanner.hh"
+#include "tie.hh"
+
+/*
+ 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
{
Drul_array<Music *> events_;
Music * running_slur_start_;
- Grob * slur_;
-
- Moment last_start_;
+ Link_array<Grob> slurs_;
+ Link_array<Grob> end_slurs_;
void set_melisma (bool);
Slur_engraver::Slur_engraver ()
{
- events_[START] =events_[STOP] = 0;
- slur_ = 0;
- last_start_ = Moment (-1);
+ events_[START] = events_[STOP] = 0;
}
bool
{
if (m->is_mus_type ("slur-event"))
{
- /*
- Let's not start more than one slur per moment.
- */
Direction d = to_dir (m->get_property ("span-direction"));
if (d == START)
{
- if (slur_)
- return false;
-
events_[START] = m;
return true;
}
else if (d == STOP)
{
- if (!slur_)
- return false;
-
events_[STOP] = m;
return true;
}
void
Slur_engraver::acknowledge_grob (Grob_info info)
{
- Grob *e =info.grob_;
+ Grob *e = info.grob_;
if (Note_column::has_interface (info.grob_))
{
- if (slur_)
- New_slur::add_column (slur_, e);
+ 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
{
- if (slur_)
- New_slur::add_extra_encompass (slur_, e);
+ 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 ()
{
- if (slur_)
- slur_->warning (_("unterminated slur"));
+ if (slurs_.size ())
+ slurs_[0]->warning (_("unterminated slur"));
}
void
Slur_engraver::process_music ()
{
- if (events_[STOP] && events_[START])
+ if (events_[STOP])
{
- events_[START]->origin()->warning (_ ("Cannot start and end slur on same note"));
+ if (slurs_.size() == 0)
+ {
+ events_[STOP]->origin()->warning (_ ("No slur to end"));
+ }
+
+ end_slurs_ = slurs_;
+ slurs_.clear ();
}
- if (events_[START] && !slur_)
+ if (events_[START] && slurs_.is_empty ())
{
Music *ev = events_[START];
- slur_ = make_spanner ("Slur", events_[START]->self_scm ());
- if (Direction updown = to_dir (ev->get_property ("direction")))
- slur_->set_property ("direction", scm_int2num (updown));
- }
- set_melisma (slur_ && !events_[STOP]);
+ bool double_slurs = to_boolean (get_property ("doubleSlurs"));
+
+ 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 ()
{
- if (events_[STOP])
- {
- slur_ = 0;
- }
-
+ end_slurs_.clear ();
events_[START] = events_[STOP] = 0;
}
-
-
-ENTER_DESCRIPTION (Slur_engraver,
-/* descr */ "Build slurs grobs from slur events",
-/* creats*/ "Slur",
-/* accepts */ "slur-event",
-/* acks */ "note-column-interface accidental-interface fingering-interface script-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 */ "");