source file of the GNU LilyPond music typesetter
- (c) 1998--2001 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1998--2002 Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
#include "engraver-group-engraver.hh"
class Beam_engraver : public Engraver
{
Drul_array<Span_req*> reqs_drul_;
-
- Link_array<Stem> stems_;
-
Spanner *finished_beam_p_;
Spanner *beam_p_;
/// moment (global time) where beam started.
Moment beam_start_mom_;
-
+
+ bool subdivide_beams_;
+
void typeset_beam ();
void set_melisma (bool);
protected:
virtual void stop_translation_timestep ();
virtual 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 ();
beam_info_p_ =0;
reqs_drul_[LEFT] = reqs_drul_[RIGHT] =0;
prev_start_req_ =0;
+
}
bool
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))
+ SCM b = get_property ("autoBeaming");
+ if (to_boolean (m) && !to_boolean (b))
{
set_melisma (false);
}
if (beam_p_)
{
- Score_engraver * e = 0;
- Translator * t = daddy_grav_l ();
- for (; !e && t; t = t->daddy_trans_l_)
- {
- e = dynamic_cast<Score_engraver*> (t);
- }
-
- if (!e)
- programming_error ("No score engraver!");
- else
- e->forbid_breaks ();
+ top_engraver ()->forbid_breaks ();
}
-}
-
-
-void
-Beam_engraver::create_grobs ()
-{
if (reqs_drul_[START])
{
if (beam_p_)
/* urg, must copy to Auto_beam_engraver too */
- announce_grob (beam_p_, reqs_drul_[START]);
+ announce_grob(beam_p_, reqs_drul_[START]->self_scm());
}
- reqs_drul_[STOP] = 0;
- reqs_drul_[START] = 0;
+
}
+
void
Beam_engraver::typeset_beam ()
{
if (finished_beam_p_)
{
finished_beam_info_p_->beamify(*unsmob_moment (get_property ("beatLength")),
- (bool)gh_scm2bool(get_property("subdivideBeams")));
+ subdivide_beams_);
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;
}
}
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)) {
- set_melisma (true);
+ reqs_drul_[STOP] = 0;
+
+ if (beam_p_)
+ {
+ SCM m = get_property ("automaticMelismata");
+ SCM b = get_property ("autoBeaming");
+ if (to_boolean (m) && !to_boolean (b))
+ {
+ set_melisma (true);
+ }
+ subdivide_beams_ = to_boolean(get_property("subdivideBeams"));
}
- }
}
void
if (Stem::beam_l (stem_l))
return;
- Rhythmic_req *rhythmic_req = dynamic_cast <Rhythmic_req *> (info.req_l_);
+ Rhythmic_req *rhythmic_req = dynamic_cast <Rhythmic_req *> (info.music_cause ());
if (!rhythmic_req)
{
String s = _ ("stem must have Rhythmic structure");
- if (info.req_l_)
- info.req_l_->origin ()->warning (s);
+ if (info.music_cause ())
+ info.music_cause ()->origin ()->warning (s);
else
::warning (s);
gh_int2scm (durlog));
Moment stem_location = now - beam_start_mom_ + beam_start_location_;
beam_info_p_->add_stem (stem_location,
- (durlog- 2) >? 1);
+ (durlog- 2) >? 0);
Beam::add_stem (beam_p_, stem_l);
}
}
printed with flags instead of beams.",
/* creats*/ "Beam",
/* acks */ "stem-interface rest-interface",
-/* reads */ "beamMelismaBusy",
+/* reads */ "beamMelismaBusy subdivideBeams",
/* write */ "");