source file of the GNU LilyPond music typesetter
- (c) 1999 Jan Nieuwenhuizen <janneke@gnu.org>
+ (c) 1999--2000 Jan Nieuwenhuizen <janneke@gnu.org>
*/
-#include "auto-beam-engraver.hh"
+#include "beaming.hh"
#include "musical-request.hh"
-#include "bar.hh"
#include "beam.hh"
-#include "rhythmic-grouping.hh"
-#include "rest.hh"
#include "stem.hh"
#include "debug.hh"
-#include "time-description.hh"
+#include "engraver-group-engraver.hh"
+#include "bar.hh"
+#include "rest.hh"
+#include "engraver.hh"
+#include "item.hh"
+#include "spanner.hh"
+
+/*
+ TODO: figure what to do in grace?
+ */
+class Auto_beam_engraver : public Engraver
+{
+public:
+ Auto_beam_engraver ();
+ VIRTUAL_COPY_CONS (Translator);
+
+protected:
+ virtual bool do_try_music (Music*);
+ virtual void do_pre_move_processing ();
+ virtual void do_post_move_processing ();
+ virtual void do_removal_processing ();
+ virtual void acknowledge_element (Score_element_info);
+ virtual void do_process_music ();
+ virtual void process_acknowledged ();
+private:
+ void begin_beam ();
+ void consider_end_and_begin (Moment test_mom);
+ Spanner* create_beam_p ();
+ void end_beam ();
+ void junk_beam ();
+ bool same_grace_state_b (Score_element* e);
+ void typeset_beam ();
+
+ Moment shortest_mom_;
+ Spanner *finished_beam_p_;
+ Link_array<Item>* stem_l_arr_p_;
+
+ Moment last_add_mom_;
+ Moment extend_mom_;
+ Moment beam_start_moment_;
+ Moment beam_start_location_;
+
+ // We act as if beam were created, and start a grouping anyway.
+ Beaming_info_list*grouping_p_;
+ Beaming_info_list*finished_grouping_p_;
+};
ADD_THIS_TRANSLATOR (Auto_beam_engraver);
Auto_beam_engraver::Auto_beam_engraver ()
{
- beam_p_ = 0;
- mult_i_ = 0;
+ stem_l_arr_p_ = 0;
+ shortest_mom_ = Moment (1, 8);
finished_beam_p_ = 0;
finished_grouping_p_ = 0;
grouping_p_ = 0;
}
+bool
+Auto_beam_engraver::do_try_music (Music*)
+{
+ return false;
+}
+
void
-Auto_beam_engraver::do_process_requests ()
+Auto_beam_engraver::do_process_music ()
{
- consider_end_and_begin ();
+ consider_end_and_begin (shortest_mom_);
}
void
-Auto_beam_engraver::consider_end_and_begin ()
+Auto_beam_engraver::consider_end_and_begin (Moment test_mom)
{
- Time_description const *time = get_staff_info().time_C_;
- int num = time->whole_per_measure_ / time->one_beat_;
- int den = time->one_beat_.den_i ();
- String time_str = String ("time") + to_str (num) + "_" + to_str (den);
- int type = 1 << (mult_i_ + 2);
- String type_str = to_str (type);
+ SCM wild = gh_list (ly_symbol2scm ("*"), ly_symbol2scm ("*"), SCM_UNDEFINED);
+ SCM b = gh_list (ly_symbol2scm ("begin"), SCM_UNDEFINED);
+ SCM e = gh_list (ly_symbol2scm ("end"), SCM_UNDEFINED);
+
+ Moment one_beat = *unsmob_moment( get_property ("beatLength"));
+ int num = *unsmob_moment (get_property("measureLength")) / one_beat;
+ int den = one_beat.den_i ();
+ SCM time = gh_list (gh_int2scm (num), gh_int2scm (den), SCM_UNDEFINED);
+ SCM type = gh_list (gh_int2scm (test_mom.num_i ()),
+ gh_int2scm (test_mom.den_i ()), SCM_UNDEFINED);
+
+ SCM settings = get_property ("autoBeamSettings");
+
/*
Determine end moment for auto beaming (and begin, mostly 0==anywhere)
In order of increasing priority:
- i. every beat <den>
- ii. time<num>_<den>beamAutoEnd
- iii. time<num>_<den>beamAutoEnd<type>
- iv. beamAutoEnd
- v. beamAutoEnd<type>
+ i. every beat
+ ii. end * <num> <den>
+ iii. end <type> <num> <den>
+
+ iv. end * * *
+ v. end <type> * *
Rationale:
iv. generic override
v. override for specific duration type
- The user overrides should be required for common cases.
- */
+ */
+
/*
first guess: begin beam at any position
*/
/*
first guess: end beam at end of beat
*/
- Moment end_mom = time->one_beat_;
+ SCM one (get_property ("beatLength"));
+
+ Moment end_mom;
+ if (unsmob_moment (one))
+ end_mom = *unsmob_moment (one);
/*
second guess: property generic time exception
*/
- Scalar begin = get_property (time_str + "beamAutoBegin", 0);
- if (begin.length_i ())
- begin_mom = begin.to_rat ();
+ SCM begin = gh_assoc (gh_append3 (b, wild, time), settings);
+
+ if (begin != SCM_BOOL_F && unsmob_moment (gh_cdr (begin)))
+ begin_mom = * unsmob_moment (gh_cdr (begin));
- Scalar end = get_property (time_str + "beamAutoEnd", 0);
- if (end.length_i ())
- end_mom = end.to_rat ();
+ SCM end = gh_assoc (gh_append3 (e, wild, time), settings);
+ if (end != SCM_BOOL_F && unsmob_moment (gh_cdr (end)))
+ end_mom = * unsmob_moment (gh_cdr (end));
/*
third guess: property time exception, specific for duration type
*/
- if (mult_i_)
- {
- Scalar end_mult = get_property (time_str + "beamAutoEnd" + type_str, 0);
- if (end_mult.length_i ())
- end_mom = end_mult.to_rat ();
- Scalar begin_mult = get_property (time_str + "beamAutoBegin" + type_str, 0);
- if (begin_mult.length_i ())
- begin_mom = begin_mult.to_rat ();
- }
+ SCM begin_mult = gh_assoc (gh_append3 (b, type, time), settings);
+ if (begin_mult != SCM_BOOL_F && unsmob_moment (gh_cdr (begin_mult)))
+ begin_mom = * unsmob_moment (gh_cdr (begin_mult));
+
+ SCM end_mult = gh_assoc (gh_append3 (e, type, time), settings);
+ if (end_mult != SCM_BOOL_F && unsmob_moment (gh_cdr (end_mult)))
+ end_mom = * unsmob_moment (gh_cdr (end_mult));
/*
fourth guess [user override]: property plain generic
*/
- begin = get_property ("beamAutoBegin", 0);
- if (begin.length_i ())
- begin_mom = begin.to_rat ();
-
- end = get_property ("beamAutoEnd", 0);
- if (end.length_i ())
- end_mom = end.to_rat ();
+ begin = gh_assoc (gh_append3 (b, wild, wild), settings);
+ if (begin != SCM_BOOL_F && unsmob_moment (gh_cdr (begin)))
+ begin_mom = * unsmob_moment (gh_cdr (begin));
+
+ end = gh_assoc (gh_append3 (e, wild, wild), settings);
+ if (end != SCM_BOOL_F && unsmob_moment (gh_cdr (end)))
+ end_mom = * unsmob_moment (gh_cdr (end));
/*
fifth guess [user override]: property plain, specific for duration type
*/
- if (mult_i_)
- {
- Scalar end_mult = get_property (String ("beamAutoEnd") + type_str, 0);
- if (end_mult.length_i ())
- end_mom = end_mult.to_rat ();
- Scalar begin_mult = get_property (String ("beamAutoBegin") + type_str, 0);
- if (begin_mult.length_i ())
- begin_mom = begin_mult.to_rat ();
- }
+ begin_mult = gh_assoc (gh_append3 (b, type, wild), settings);
+ if (begin_mult != SCM_BOOL_F && unsmob_moment (gh_cdr (begin_mult)))
+ begin_mom = * unsmob_moment (gh_cdr (begin_mult));
+
+ end_mult = gh_assoc (gh_append3 (e, type, wild), settings);
+ if (end_mult != SCM_BOOL_F && unsmob_moment (gh_cdr (end_mult)))
+ end_mom = * unsmob_moment (gh_cdr (end_mult));
Rational r;
if (end_mom)
- r = time->whole_in_measure_.mod_rat (end_mom);
+ r = unsmob_moment (get_property ("measurePosition"))->mod_rat (end_mom);
else
r = Moment (1);
- if (beam_p_ && !r)
+ if (stem_l_arr_p_ && !r)
end_beam ();
/*
Allow already started autobeam to end
*/
- Scalar on = get_property ("beamAuto", 0);
- if (!on.to_bool ())
+ SCM on = get_property ("noAutoBeaming");
+ if (to_boolean (on))
return;
if (begin_mom)
- r = time->whole_in_measure_.mod_rat (begin_mom);
- if (!beam_p_ && (!begin_mom || !r))
+ r = unsmob_moment (get_property ("measurePosition"))->mod_rat (begin_mom);
+ if (!stem_l_arr_p_ && (!begin_mom || !r))
begin_beam ();
}
void
Auto_beam_engraver::begin_beam ()
{
- DOUT << String ("starting autobeam at: ") + now_mom ().str () + "\n";
- assert (!beam_p_);
- beam_p_ = new Beam;
- grouping_p_ = new Rhythmic_grouping;
-
- /* urg, copied from Beam_engraver */
- Scalar prop = get_property ("beamslopedamping", 0);
- if (prop.isnum_b ())
- beam_p_->damping_i_ = prop;
-
- prop = get_property ("beamquantisation", 0);
- if (prop.isnum_b ())
- beam_p_->quantisation_ = (Beam::Quantisation)(int)prop;
-
- // must set minVerticalAlign = = maxVerticalAlign to get sane results
- // see input/test/beam-interstaff.ly
- prop = get_property ("minVerticalAlign", 0);
- if (prop.isnum_b ())
- beam_p_->vertical_align_drul_[MIN] = prop;
-
- prop = get_property ("maxVerticalAlign", 0);
- if (prop.isnum_b ())
- beam_p_->vertical_align_drul_[MAX] = prop;
-
- announce_element (Score_element_info (beam_p_, 0));
+ assert (!stem_l_arr_p_);
+ stem_l_arr_p_ = new Link_array<Item>;
+ assert (!grouping_p_);
+ grouping_p_ = new Beaming_info_list;
+ beam_start_moment_ = now_mom ();
+ beam_start_location_ = *unsmob_moment (get_property ("measurePosition"));
+}
+
+Spanner*
+Auto_beam_engraver::create_beam_p ()
+{
+ Spanner* beam_p = new Spanner (get_property ("Beam"));
+ Beam::set_interface (beam_p);
+
+ for (int i = 0; i < stem_l_arr_p_->size (); i++)
+ {
+ /*
+ watch out for stem tremolos and abbreviation beams
+ */
+ if (Stem::beam_l ((*stem_l_arr_p_)[i]))
+ {
+ return 0;
+ }
+ Beam::add_stem (beam_p,(*stem_l_arr_p_)[i]);
+ }
+
+ announce_element (beam_p, 0);
+
+ return beam_p;
}
void
Auto_beam_engraver::end_beam ()
{
- DOUT << String ("ending autobeam at: ") + now_mom ().str () + "\n";
- if (beam_p_->stems_.size () < 2)
+ if (stem_l_arr_p_->size () < 2)
{
- DOUT << "junking autombeam: less than two stems\n";
junk_beam ();
}
else
{
- finished_beam_p_ = beam_p_;
- finished_grouping_p_ = grouping_p_;
- beam_p_ = 0;
+ finished_beam_p_ = create_beam_p ();
+ if (finished_beam_p_)
+ finished_grouping_p_ = grouping_p_;
+ delete stem_l_arr_p_;
+ stem_l_arr_p_ = 0;
grouping_p_ = 0;
- mult_i_ = 0;
+ shortest_mom_ = Moment (1, 8);
}
}
-
+
void
Auto_beam_engraver::typeset_beam ()
{
if (finished_beam_p_)
{
- Rhythmic_grouping const * rg_C = get_staff_info().rhythmic_C_;
- rg_C->extend (finished_grouping_p_->interval());
- finished_beam_p_->set_grouping (*rg_C, *finished_grouping_p_);
+ finished_grouping_p_->beamify ();
+ Beam::set_beaming (finished_beam_p_, finished_grouping_p_);
typeset_element (finished_beam_p_);
finished_beam_p_ = 0;
void
Auto_beam_engraver::do_post_move_processing ()
{
+ /*
+ don't beam over skips
+ */
+ if (stem_l_arr_p_)
+ {
+ Moment now = now_mom ();
+ if (extend_mom_ < now)
+ {
+ end_beam ();
+ }
+ }
}
void
void
Auto_beam_engraver::do_removal_processing ()
{
+ /* finished beams may be typeset */
typeset_beam ();
- if (beam_p_)
- {
- DOUT << "Unfinished beam\n";
- junk_beam ();
- }
+ /* but unfinished may need another announce/acknowledge pass */
+ if (stem_l_arr_p_)
+ junk_beam ();
+}
+
+bool
+Auto_beam_engraver::same_grace_state_b (Score_element* e)
+{
+ bool gr = e->get_elt_property ("grace") == SCM_BOOL_T;
+ SCM wg =get_property ("weAreGraceContext");
+ return (to_boolean (wg)) == gr;
}
void
Auto_beam_engraver::acknowledge_element (Score_element_info info)
{
- if (Beam *b = dynamic_cast<Beam *> (info.elem_l_))
+ if (!same_grace_state_b (info.elem_l_))
+ return;
+
+ if (stem_l_arr_p_)
{
- if (beam_p_)
+ if (Beam::has_interface (info.elem_l_))
{
- DOUT << "junking autobeam: beam encountered\n";
- junk_beam ();
+ end_beam ();
}
- }
- if (Bar *b = dynamic_cast<Bar *> (info.elem_l_))
- {
- if (beam_p_)
+ else if (Bar::has_interface (info.elem_l_))
{
- DOUT << "junking autobeam: bar encountered\n";
- junk_beam ();
+ end_beam ();
+ }
+ else if (Rest::has_interface (info.elem_l_))
+ {
+ end_beam ();
}
}
-
- if (beam_p_)
+
+ if (Stem::has_interface (info.elem_l_))
{
+ Item* stem_l = dynamic_cast<Item *> (info.elem_l_);
+
Rhythmic_req *rhythmic_req = dynamic_cast <Rhythmic_req *> (info.req_l_);
if (!rhythmic_req)
- return;
-
- if (dynamic_cast<Rest *> (info.elem_l_))
{
- DOUT << "junking autobeam: rest encountered\n";
- end_beam ();
+ programming_error ("Stem must have rhythmic structure");
return;
}
-
- Stem* stem_l = dynamic_cast<Stem *> (info.elem_l_);
- if (!stem_l)
- return;
-
- if (stem_l->beam_l_ && (stem_l->beam_l_ != beam_p_))
+
+ /*
+ Don't (start) auto-beam over empty stems; skips or rests
+ */
+ if (!Stem::heads_i (stem_l))
{
- DOUT << "junking autobeam: beamed stem encountered\n";
- junk_beam ();
+ if (stem_l_arr_p_)
+ end_beam ();
return;
}
-
- /*
- now that we have last_add_mom_, perhaps we can (should) do away
- with these individual junk_beams
- */
- if (rhythmic_req->duration_.durlog_i_<= 2)
+ if (Stem::beam_l (stem_l))
{
- DOUT << "ending autobeam: stem doesn't fit in beam\n";
- end_beam ();
- return;
+ if (stem_l_arr_p_)
+ junk_beam ();
+ return ;
}
-
- Moment start = get_staff_info().time_C_->whole_in_measure_;
- if (!grouping_p_->child_fit_b (start))
+
+ int durlog = unsmob_duration (rhythmic_req->get_mus_property ("duration"))->duration_log ();
+
+ if (durlog <= 2)
{
- DOUT << "ending autobeam: stem doesn't fit in group\n";
- end_beam ();
+ if (stem_l_arr_p_)
+ end_beam ();
+ return;
}
- else
+
+ /*
+ if shortest duration would change
+ reconsider ending/starting beam first.
+ */
+ Moment mom = unsmob_duration (rhythmic_req->get_mus_property ("duration"))->length_mom ();
+ consider_end_and_begin (mom);
+ if (!stem_l_arr_p_)
+ return;
+ if (mom < shortest_mom_)
{
- int m = (rhythmic_req->duration_.durlog_i_ - 2);
- /*
- if multiplicity would become greater,
- reconsider ending/starting beam first.
- */
- if (m > mult_i_)
+ if (stem_l_arr_p_->size ())
{
- mult_i_ = m;
- consider_end_and_begin ();
+ shortest_mom_ = mom;
+ consider_end_and_begin (shortest_mom_);
+ if (!stem_l_arr_p_)
+ return;
}
- mult_i_ = m;
- grouping_p_->add_child (start, rhythmic_req->length_mom ());
- stem_l->flag_i_ = rhythmic_req->duration_.durlog_i_;
- beam_p_->add_stem (stem_l);
- Moment now = now_mom ();
- last_add_mom_ = now;
- extend_mom_ = extend_mom_ >? now + rhythmic_req->length_mom ();
+ shortest_mom_ = mom;
}
+ Moment now = now_mom ();
+
+ grouping_p_->add_stem (now - beam_start_moment_ + beam_start_location_,
+ durlog - 2);
+ stem_l_arr_p_->push (stem_l);
+ last_add_mom_ = now;
+ extend_mom_ = extend_mom_ >? now + rhythmic_req->length_mom ();
}
}
void
Auto_beam_engraver::junk_beam ()
{
- assert (beam_p_);
-#if 0
- for (int i=0; i < beam_p_->stems_.size (); i++)
- {
- Stem* s = beam_p_->stems_[i];
- s->beams_i_drul_[LEFT] = 0;
- s->beams_i_drul_[RIGHT] = 0;
- s->mult_i_ = 0;
- s->beam_l_ = 0;
- }
-#endif
+ assert (stem_l_arr_p_);
- beam_p_->unlink ();
- beam_p_ = 0;
+ delete stem_l_arr_p_;
+ stem_l_arr_p_ = 0;
delete grouping_p_;
grouping_p_ = 0;
- mult_i_ = 0;
+ shortest_mom_ = Moment (1, 8);
}
void
Auto_beam_engraver::process_acknowledged ()
{
- if (beam_p_)
+ if (stem_l_arr_p_)
{
Moment now = now_mom ();
if ((extend_mom_ < now)
|| ((extend_mom_ == now) && (last_add_mom_ != now )))
{
- DOUT << String ("junking autobeam: no stem added since: ")
- + last_add_mom_.str () + "\n";
end_beam ();
}
- else if (!beam_p_->stems_.size ())
+ else if (!stem_l_arr_p_->size ())
{
- DOUT << "junking started autobeam: no stems\n";
junk_beam ();
}
}
projects / lilypond.git / blobdiff