-/*
- beam-engraver.cc -- implement Beam_engraver
-
+/*
+ beam-engraver.cc -- implement Beam_engraver
+
source file of the GNU LilyPond music typesetter
-
- (c) 1998--2001 Han-Wen Nienhuys <hanwen@cs.uu.nl>
-
- */
-#include "engraver-group-engraver.hh"
-#include "engraver.hh"
-#include "musical-request.hh"
+
+ (c) 1998--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
+*/
+
#include "beam.hh"
-#include "stem.hh"
-#include "warn.hh"
-#include "beaming.hh"
-#include "score-engraver.hh"
-#include "rest.hh"
+#include "beaming-pattern.hh"
+#include "context.hh"
#include "drul-array.hh"
+#include "duration.hh"
+#include "engraver.hh"
+#include "international.hh"
#include "item.hh"
+#include "rest.hh"
+#include "score-context.hh"
#include "spanner.hh"
+#include "stem.hh"
+#include "warn.hh"
+
+#include "translator.icc"
class Beam_engraver : public Engraver
{
- Drul_array<Span_req*> reqs_drul_;
+public:
+ DECLARE_ACKNOWLEDGER (stem);
+ DECLARE_ACKNOWLEDGER (rest);
+protected:
+ Music *start_ev_;
- Link_array<Stem> stems_;
-
-
- Spanner *finished_beam_p_;
- Spanner *beam_p_;
- Span_req * prev_start_req_;
+ Spanner *finished_beam_;
+ Spanner *beam_;
+ Music *prev_start_ev_;
+
+ Music *now_stop_ev_;
- Beaming_info_list * beam_info_p_;
- Beaming_info_list * finished_beam_info_p_;
+ Beaming_pattern *beam_info_;
+ Beaming_pattern *finished_beam_info_;
/// location within measure where beam started.
Moment beam_start_location_;
/// moment (global time) where beam started.
Moment beam_start_mom_;
-
+
+ bool subdivide_beams_;
+ Moment beat_length_;
+
void typeset_beam ();
void set_melisma (bool);
-protected:
- virtual void stop_translation_timestep ();
- virtual void start_translation_timestep ();
+
+ Moment last_stem_added_at_;
+ void stop_translation_timestep ();
+ void start_translation_timestep ();
virtual void finalize ();
- virtual void create_grobs ();
- virtual void acknowledge_grob (Grob_info);
- virtual bool try_music (Music*);
- virtual void process_music ();
+
+ virtual bool try_music (Music *);
+ void process_music ();
+
+ virtual bool valid_start_point ();
+ virtual bool valid_end_point ();
public:
- Beam_engraver ();
- VIRTUAL_COPY_CONS (Translator);
+ TRANSLATOR_DECLARATIONS (Beam_engraver);
};
+/*
+ Hmm. this isn't necessary, since grace beams and normal beams are
+ always nested.
+*/
+bool
+Beam_engraver::valid_start_point ()
+{
+ Moment n = now_mom ();
+
+ return n.grace_part_ == Rational (0);
+}
+
+bool
+Beam_engraver::valid_end_point ()
+{
+ return valid_start_point ();
+}
Beam_engraver::Beam_engraver ()
{
- beam_p_ = 0;
- finished_beam_p_ =0;
- finished_beam_info_p_=0;
- beam_info_p_ =0;
- reqs_drul_[LEFT] = reqs_drul_[RIGHT] =0;
- prev_start_req_ =0;
+ beam_ = 0;
+ finished_beam_ = 0;
+ finished_beam_info_ = 0;
+ beam_info_ = 0;
+ now_stop_ev_ = 0;
+ start_ev_ = 0;
+ prev_start_ev_ = 0;
}
bool
Beam_engraver::try_music (Music *m)
{
- if (Span_req * c = dynamic_cast<Span_req*> (m))
+ if (m->is_mus_type ("beam-event"))
{
- if (scm_equal_p (c->get_mus_property ("span-type"),
- ly_str02scm ("abort")) == SCM_BOOL_T)
- {
- reqs_drul_[START] = 0;
- reqs_drul_[STOP] = 0;
- if (beam_p_)
- beam_p_->suicide ();
- beam_p_ = 0;
- }
- else if (scm_equal_p (c->get_mus_property ("span-type"),
- ly_str02scm ("beam")) == SCM_BOOL_T)
- {
-
- Direction d =c->get_span_dir ();
-
- if (d == STOP && !beam_p_)
- {
- m->origin ()->warning (_ ("can't find start of beam"));
- return false;
- }
-
- if (d == STOP)
- {
- SCM m = get_property ("automaticMelismata");
- SCM b = get_property ("noAutoBeaming");
- if (to_boolean (m) && to_boolean (b))
- {
- set_melisma (false);
- }
- }
-
- reqs_drul_[d ] = c;
- return true;
- }
+ Direction d = to_dir (m->get_property ("span-direction"));
+ if (d == START && !valid_start_point ())
+ return false;
+ if (d == STOP && !valid_end_point ())
+ return false;
+
+ if (d == START)
+ start_ev_ = m;
+ else if (d == STOP)
+ now_stop_ev_ = m;
+ return true;
}
return false;
}
void
-Beam_engraver::set_melisma (bool m)
+Beam_engraver::set_melisma (bool ml)
{
- daddy_trans_l_->set_property ("beamMelismaBusy", m ? SCM_BOOL_T :SCM_BOOL_F);
+ SCM b = get_property ("autoBeaming");
+ if (!to_boolean (b))
+ context ()->set_property ("beamMelismaBusy", ml ? SCM_BOOL_T : SCM_BOOL_F);
}
void
Beam_engraver::process_music ()
{
- if (reqs_drul_[STOP])
- {
- if (!beam_p_)
- reqs_drul_[STOP]->origin ()->warning (_ ("can't find start of beam"));
- prev_start_req_ =0;
- finished_beam_p_ = beam_p_;
- finished_beam_info_p_ = beam_info_p_;
-
- beam_info_p_ =0;
- beam_p_ = 0;
- }
-
+ if (beam_ && !to_boolean (get_property ("allowBeamBreak")))
+ context ()->get_score_context ()->set_property ("forbidBreak", SCM_BOOL_T);
- if (beam_p_)
+ if (start_ev_)
{
- Score_engraver * e = 0;
- Translator * t = daddy_grav_l ();
- for (; !e && t; t = t->daddy_trans_l_)
+ if (beam_)
{
- e = dynamic_cast<Score_engraver*> (t);
- }
-
- if (!e)
- programming_error ("No score engraver!");
- else
- e->forbid_breaks ();
- }
-}
-
-
-void
-Beam_engraver::create_grobs ()
-{
- if (reqs_drul_[START])
- {
- if (beam_p_)
- {
- reqs_drul_[START]->origin ()->warning (_ ("already have a beam"));
+ start_ev_->origin ()->warning (_ ("already have a beam"));
return;
}
- prev_start_req_ = reqs_drul_[START];
- beam_p_ = new Spanner (get_property ("Beam"));
- SCM smp = get_property ("measurePosition");
- Moment mp = (unsmob_moment (smp)) ? *unsmob_moment (smp) : Moment (0);
+ set_melisma (true);
+ prev_start_ev_ = start_ev_;
+ beam_ = make_spanner ("Beam", start_ev_->self_scm ());
+ Moment mp (robust_scm2moment (get_property ("measurePosition"), Moment (0)));
beam_start_location_ = mp;
beam_start_mom_ = now_mom ();
-
- beam_info_p_ = new Beaming_info_list;
-
+
+ beam_info_ = new Beaming_pattern;
/* urg, must copy to Auto_beam_engraver too */
-
- announce_grob (beam_p_, reqs_drul_[START]);
}
- reqs_drul_[STOP] = 0;
- reqs_drul_[START] = 0;
}
void
Beam_engraver::typeset_beam ()
{
- if (finished_beam_p_)
+ if (finished_beam_)
{
- finished_beam_info_p_->beamify ();
-
- Beam::set_beaming (finished_beam_p_, finished_beam_info_p_);
- typeset_grob (finished_beam_p_);
- delete finished_beam_info_p_;
- finished_beam_info_p_ =0;
- finished_beam_p_ = 0;
-
- reqs_drul_[STOP] = 0;
+ if (!finished_beam_->get_bound (RIGHT))
+ finished_beam_->set_bound (RIGHT, finished_beam_->get_bound (LEFT));
+
+ finished_beam_info_->beamify (context ());
+ Beam::set_beaming (finished_beam_, finished_beam_info_);
+
+ delete finished_beam_info_;
+ finished_beam_info_ = 0;
+ finished_beam_ = 0;
}
}
void
Beam_engraver::start_translation_timestep ()
{
- reqs_drul_ [START] =0;
- if (beam_p_) {
- SCM m = get_property ("automaticMelismata");
- SCM b = get_property ("noAutoBeaming");
- if (to_boolean (m) && to_boolean (b)) {
+ start_ev_ = 0;
+
+ if (beam_)
+ {
set_melisma (true);
}
- }
}
void
Beam_engraver::stop_translation_timestep ()
{
typeset_beam ();
+ if (now_stop_ev_)
+ {
+ finished_beam_ = beam_;
+ finished_beam_info_ = beam_info_;
+
+ now_stop_ev_ = 0;
+ beam_ = 0;
+ beam_info_ = 0;
+ typeset_beam ();
+ set_melisma (false);
+ }
}
void
Beam_engraver::finalize ()
{
typeset_beam ();
- if (beam_p_)
+ if (beam_)
{
- prev_start_req_->origin ()->warning (_ ("unterminated beam"));
+ prev_start_ev_->origin ()->warning (_ ("unterminated beam"));
/*
we don't typeset it, (we used to, but it was commented
out. Reason unknown) */
- beam_p_->suicide ();
- delete beam_info_p_;
+ beam_->suicide ();
+ delete beam_info_;
}
}
void
-Beam_engraver::acknowledge_grob (Grob_info info)
+Beam_engraver::acknowledge_rest (Grob_info info)
{
- if (beam_p_)
+ if (beam_)
{
- if (Rest::has_interface (info.elem_l_))
- {
- info.elem_l_->add_offset_callback (Beam::rest_collision_callback_proc, Y_AXIS);
- }
- else if (Stem::has_interface (info.elem_l_))
- {
- Moment now = now_mom();
+ chain_offset_callback (info.grob(),
+ Beam::rest_collision_callback_proc, Y_AXIS);
+ }
+}
- if(bool (now.grace_mom_ ) != bool (beam_start_mom_.grace_mom_))
- return ;
-
- Item *stem_l = dynamic_cast<Item*> (info.elem_l_);
- if (Stem::beam_l (stem_l))
- return;
-
- Rhythmic_req *rhythmic_req = dynamic_cast <Rhythmic_req *> (info.req_l_);
- if (!rhythmic_req)
- {
- String s = _ ("stem must have Rhythmic structure");
- if (info.req_l_)
- info.req_l_->origin ()->warning (s);
- else
- ::warning (s);
-
- return;
- }
-
- int durlog = unsmob_duration (rhythmic_req->get_mus_property ("duration"))-> duration_log ();
- if (durlog <= 2)
- {
- rhythmic_req->origin ()->warning (_ ("stem doesn't fit in beam"));
- prev_start_req_->origin ()->warning (_ ("beam was started here"));
- /*
- don't return, since
-
- [r4 c8] can just as well be modern notation.
- */
- }
-
- stem_l->set_grob_property ("duration-log",
- gh_int2scm (durlog));
- Moment stem_location = now - beam_start_mom_ + beam_start_location_;
- beam_info_p_->add_stem (stem_location,
- (durlog- 2) >? 1);
- Beam::add_stem (beam_p_, stem_l);
- }
+
+
+void
+Beam_engraver::acknowledge_stem (Grob_info info)
+{
+ if (!beam_)
+ return;
+
+ Moment now = now_mom ();
+ if (!valid_start_point ())
+ return;
+
+ Item *stem = dynamic_cast<Item *> (info.grob ());
+ if (Stem::get_beam (stem))
+ return;
+
+
+
+ Music *m = info.ultimate_music_cause ();
+ if (!m->is_mus_type ("rhythmic-event"))
+ {
+ string s = _ ("stem must have Rhythmic structure");
+ if (info.music_cause ())
+ info.music_cause ()->origin ()->warning (s);
+ else
+ ::warning (s);
+
+ return;
}
+
+ last_stem_added_at_ = now;
+ int durlog = unsmob_duration (m->get_property ("duration"))->duration_log ();
+ if (durlog <= 2)
+ {
+ m->origin ()->warning (_ ("stem doesn't fit in beam"));
+ prev_start_ev_->origin ()->warning (_ ("beam was started here"));
+ /*
+ don't return, since
+
+ [r4 c8] can just as well be modern notation.
+ */
+ }
+
+ stem->set_property ("duration-log",
+ scm_from_int (durlog));
+ Moment stem_location = now - beam_start_mom_ + beam_start_location_;
+ beam_info_->add_stem (stem_location,
+ max (durlog- 2, 0));
+ Beam::add_stem (beam_, stem);
+}
+
+ADD_ACKNOWLEDGER (Beam_engraver, stem);
+ADD_ACKNOWLEDGER (Beam_engraver, rest);
+
+ADD_TRANSLATOR (Beam_engraver,
+ /* doc */
+
+ "Handles Beam events by engraving Beams. If omitted, then notes will be "
+ "printed with flags instead of beams.",
+
+ /* create */ "Beam",
+ /* accept */ "beam-event",
+
+ /* read */
+ "beamMelismaBusy "
+ "beatLength "
+ "subdivideBeams "
+ ,
+ /* write */
+ "forbidBreak");
+
+class Grace_beam_engraver : public Beam_engraver
+{
+public:
+ TRANSLATOR_DECLARATIONS (Grace_beam_engraver);
+
+protected:
+ virtual bool valid_start_point ();
+ virtual bool valid_end_point ();
+};
+
+Grace_beam_engraver::Grace_beam_engraver ()
+{
}
+bool
+Grace_beam_engraver::valid_start_point ()
+{
+ Moment n = now_mom ();
+
+ return n.grace_part_ != Rational (0);
+}
+bool
+Grace_beam_engraver::valid_end_point ()
+{
+ return beam_ && valid_start_point ();
+}
-ADD_THIS_TRANSLATOR (Beam_engraver);
+ADD_ACKNOWLEDGER (Grace_beam_engraver, stem);
+ADD_ACKNOWLEDGER (Grace_beam_engraver, rest);
+
+ADD_TRANSLATOR (Grace_beam_engraver,
+
+ /* doc */
+
+ "Handles Beam events by engraving Beams. If omitted, then notes will "
+ "be printed with flags instead of beams. Only engraves beams when we "
+ " are at grace points in time. ",
+
+ /* create */ "Beam",
+ /* accept */ "beam-event",
+ /* read */
+ "beamMelismaBusy "
+ "beatLength "
+ "allowBeamBreak "
+ "subdivideBeams "
+ ,
+ /* write */ "");
projects / lilypond.git / blobdiff