source file of the GNU LilyPond music typesetter
- (c) 1998--1999 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1998--2001 Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
-#include "timing-engraver.hh"
#include "engraver-group-engraver.hh"
-#include "beam-engraver.hh"
+#include "engraver.hh"
#include "musical-request.hh"
#include "beam.hh"
#include "stem.hh"
#include "warn.hh"
-#include "time-description.hh"
#include "beaming.hh"
#include "score-engraver.hh"
+#include "rest.hh"
+#include "drul-array.hh"
+#include "item.hh"
+#include "spanner.hh"
+
+class Beam_engraver : public Engraver
+{
+ Drul_array<Span_req*> reqs_drul_;
+
+ Link_array<Stem> stems_;
+
+
+ Spanner *finished_beam_p_;
+ Spanner *beam_p_;
+ Span_req * prev_start_req_;
+
+ Beaming_info_list * beam_info_p_;
+ Beaming_info_list * finished_beam_info_p_;
+
+ /// location within measure where beam started.
+ Moment beam_start_location_;
+
+ /// moment (global time) where beam started.
+ Moment beam_start_mom_;
+
+ 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 ();
+
+public:
+ TRANSLATOR_DECLARATIONS( Beam_engraver );
+};
+
Beam_engraver::Beam_engraver ()
{
}
bool
-Beam_engraver::do_try_music (Music *m)
+Beam_engraver::try_music (Music *m)
{
- if (Span_req * c = dynamic_cast<Span_req*>(m))
+ if (Span_req * c = dynamic_cast<Span_req*> (m))
{
- if (c->span_type_str_ != "beam")
- return false;
+ 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->span_dir_;
+ Direction d =c->get_span_dir ();
- if (d == STOP && !beam_p_)
- {
- m->warning (_ ("no beam to end"));
- return false;
+ 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;
}
- reqs_drul_[d ] = c;
- return true;
}
return false;
}
+void
+Beam_engraver::set_melisma (bool m)
+{
+ daddy_trans_l_->set_property ("beamMelismaBusy", m ? SCM_BOOL_T :SCM_BOOL_F);
+}
void
-Beam_engraver::do_process_requests ()
+Beam_engraver::process_music ()
{
if (reqs_drul_[STOP])
{
if (!beam_p_)
- reqs_drul_[STOP]->warning (_("no beam to end"));
+ 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_;
else
e->forbid_breaks ();
}
-
+}
+
+
+void
+Beam_engraver::create_grobs ()
+{
if (reqs_drul_[START])
{
if (beam_p_)
{
- reqs_drul_[START]->warning (_ ("Already have a Beam"));
+ reqs_drul_[START]->origin ()->warning (_ ("already have a beam"));
return;
}
prev_start_req_ = reqs_drul_[START];
- beam_p_ = new Beam;
+ beam_p_ = new Spanner (get_property ("Beam"));
+ SCM smp = get_property ("measurePosition");
+ Moment mp = (unsmob_moment (smp)) ? *unsmob_moment (smp) : Moment (0);
- Translator * t = daddy_grav_l ()->get_simple_translator ("Timing_engraver");
- Timing_engraver *timer = dynamic_cast<Timing_engraver*> (t);
- beam_start_location_ = (t) ? timer->time_.whole_in_measure_ : Moment (0);
- beam_start_mom_ = now_mom();
- beam_info_p_ = new Beaming_info_list;
+ beam_start_location_ = mp;
+ beam_start_mom_ = now_mom ();
+ beam_info_p_ = new Beaming_info_list;
/* urg, must copy to Auto_beam_engraver too */
- Scalar prop = get_property ("beamslopedamping", 0);
- if (prop.isnum_b ())
- beam_p_->set_elt_property (damping_scm_sym, gh_int2scm( prop));
-
- prop = get_property ("autoKneeGap", 0);
- if (prop.isnum_b ())
- beam_p_->set_elt_property (auto_knee_gap_scm_sym, gh_int2scm( prop));
-
- prop = get_property ("autoInterstaffKneeGap", 0);
- if (prop.isnum_b ())
- beam_p_->set_elt_property (auto_interstaff_knee_gap_scm_sym, gh_int2scm( prop));
-
- prop = get_property ("beamquantisation", 0);
- if (prop.isnum_b ())
- beam_p_->quantisation_ = (Beam::Quantisation)(int)prop;
- announce_element (Score_element_info (beam_p_, reqs_drul_[START]));
+ announce_grob (beam_p_, reqs_drul_[START]);
}
+ reqs_drul_[STOP] = 0;
+ reqs_drul_[START] = 0;
}
void
{
if (finished_beam_p_)
{
- finished_beam_info_p_->beamify ();
-
- finished_beam_p_->set_beaming (finished_beam_info_p_);
- typeset_element (finished_beam_p_);
+ finished_beam_info_p_->beamify(*unsmob_moment (get_property ("beatLength")),
+ (bool)gh_scm2bool(get_property("subdivideBeams")));
+
+ 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;
}
void
-Beam_engraver::do_post_move_processing ()
+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);
+ }
+ }
}
void
-Beam_engraver::do_pre_move_processing ()
+Beam_engraver::stop_translation_timestep ()
{
typeset_beam ();
}
void
-Beam_engraver::do_removal_processing ()
+Beam_engraver::finalize ()
{
typeset_beam ();
if (beam_p_)
{
- prev_start_req_->warning (_ ("unfinished beam"));
- finished_beam_p_ = beam_p_;
- finished_beam_info_p_ = beam_info_p_;
- typeset_beam ();
+ prev_start_req_->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_;
}
}
void
-Beam_engraver::acknowledge_element (Score_element_info info)
+Beam_engraver::acknowledge_grob (Grob_info info)
{
if (beam_p_)
{
- Stem* stem_l = dynamic_cast<Stem *> (info.elem_l_);
- if (!stem_l || stem_l->beam_l_)
- return;
+ if (Rest::has_interface (info.grob_l_))
+ {
+ info.grob_l_->add_offset_callback (Beam::rest_collision_callback_proc, Y_AXIS);
+ }
+ else if (Stem::has_interface (info.grob_l_))
+ {
+ Moment now = now_mom();
+ if(bool (now.grace_part_ ) != bool (beam_start_mom_.grace_part_))
+ return ;
+
+ Item *stem_l = dynamic_cast<Item*> (info.grob_l_);
+ if (Stem::beam_l (stem_l))
+ return;
- bool stem_grace = stem_l->get_elt_property (grace_scm_sym) != SCM_BOOL_F;
+ 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;
+ }
- if (get_property ("weAreGraceContext",0).to_bool () != stem_grace)
- 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
- 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_->warning (s);
- else
- ::warning (s);
-
- return;
- }
-
- if (rhythmic_req->duration_.durlog_i_<= 2)
- {
- rhythmic_req->warning (_ ("Stem doesn't fit in beam"));
- prev_start_req_->warning (_ ("Beam was started here"));
- return;
- }
+ [r4 c8] can just as well be modern notation.
+ */
+ }
- stem_l->flag_i_ = rhythmic_req->duration_.durlog_i_;
- Moment stem_location = now_mom () - beam_start_mom_ + beam_start_location_;
- beam_info_p_->add_stem (stem_location, rhythmic_req->duration_.durlog_i_ - 2);
- beam_p_->add_stem (stem_l);
+ 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);
+ }
}
}
-ADD_THIS_TRANSLATOR(Beam_engraver);
+
+
+ENTER_DESCRIPTION(Beam_engraver,
+/* descr */ "Handles Beam_requests by engraving Beams. If omitted, then notes will be
+printed with flags instead of beams.",
+/* creats*/ "Beam",
+/* acks */ "stem-interface rest-interface",
+/* reads */ "beamMelismaBusy",
+/* write */ "");
projects / lilypond.git / blobdiff