-/*
- chord-tremolo-engraver.cc -- implement Chord_tremolo_engraver
-
+/*
+ new-chord-tremolo-engraver.cc -- implement Chord_tremolo_engraver
+
source file of the GNU LilyPond music typesetter
+
+ (c) 2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+
+ */
- (c) 1997--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
- Jan Nieuwenhuizen <janneke@gnu.org>
-*/
-
-#include "timing-translator.hh"
-#include "stem.hh"
+#include "engraver.hh"
#include "beam.hh"
+#include "repeated-music.hh"
+#include "stem.hh"
+#include "note-head.hh"
+#include "engraver-group-engraver.hh"
#include "musical-request.hh"
-#include "misc.hh"
#include "warn.hh"
-#include "score-engraver.hh"
-#include "engraver.hh"
-#include "drul-array.hh"
-#include "timing-engraver.hh"
-#include "beaming.hh"
+#include "misc.hh"
/**
- Generate a beam tremolo. Eat stems.
+ This acknowledges repeated music with "tremolo" style. It typesets
+ a beam.
+
+ TODO:
+
+ - perhaps use engraver this to steer other engravers? That would
+ create dependencies between engravers, which is bad.
+
+ - create dots if appropriate.
- UGH. Derive me from Beam_engraver.
-
*/
+
class Chord_tremolo_engraver : public Engraver
{
+ void typeset_beam ();
public:
VIRTUAL_COPY_CONS(Translator);
-
-
Chord_tremolo_engraver();
+protected:
+ Repeated_music * repeat_;
+ /// moment (global time) where beam started.
+ Moment start_mom_;
+ Moment stop_mom_;
+
+ /// location within measure where beam started.
+ Moment beam_start_location_;
+
+ int note_head_i_;
+
+ Beam * beam_p_;
+ Beam * finished_beam_p_;
+
protected:
virtual void do_removal_processing();
virtual void do_process_music();
virtual void acknowledge_element (Score_element_info);
virtual void do_pre_move_processing();
virtual void do_post_move_processing();
-
-private:
- void typeset_beam ();
- Drul_array<Chord_tremolo_req*> reqs_drul_;
- Chord_tremolo_req* prev_start_req_;
- Beam* beam_p_;
- Beam* finished_beam_p_;
-
- /// location within measure where beam started.
- Moment beam_start_location_;
-
- /// moment (global time) where beam started.
- Moment beam_start_mom_;
- Beaming_info_list * beam_info_p_;
- Beaming_info_list * finished_beam_info_p_;
};
-ADD_THIS_TRANSLATOR (Chord_tremolo_engraver);
-
-Chord_tremolo_engraver::Chord_tremolo_engraver ()
+Chord_tremolo_engraver::Chord_tremolo_engraver()
{
- reqs_drul_[LEFT] = reqs_drul_[RIGHT] = 0;
- beam_p_ = 0;
- finished_beam_p_ = 0;
- prev_start_req_ = 0;
- finished_beam_info_p_=0;
- beam_info_p_ =0;
+ beam_p_ = finished_beam_p_ = 0;
+ repeat_ =0;
+ note_head_i_ = 0;
}
bool
-Chord_tremolo_engraver::do_try_music (Music* m)
+Chord_tremolo_engraver::do_try_music (Music * m)
{
- if (Chord_tremolo_req* b = dynamic_cast <Chord_tremolo_req *> (m))
+ Repeated_music * rp = dynamic_cast<Repeated_music*> (m);
+ if (rp && rp->type_ == "tremolo" && !repeat_)
{
- Direction d = b->span_dir_;
- if (reqs_drul_[d] && !reqs_drul_[d]->equal_b (b))
- return false;
+ Moment l = rp->body_length_mom ();
+ repeat_ = rp;
+ start_mom_ = now_mom ();
+ stop_mom_ = start_mom_ + l;
- if ((d == STOP) && !beam_p_)
- {
- m->warning (_ ("can't find start of chord tremolo"));
- return false;
- }
-
- reqs_drul_[d] = b;
+ // ugh. should generate dots, triplet beams.
+ note_head_i_ = l.den () <? 4;
return true;
}
-
return false;
}
void
Chord_tremolo_engraver::do_process_music ()
{
- if (reqs_drul_[STOP])
- {
- if (!beam_p_)
- reqs_drul_[STOP]->warning (_ ("can't find start of chord tremolo"));
-
- prev_start_req_ = 0;
-
- finished_beam_p_ = beam_p_;
- beam_p_ = 0;
-
- finished_beam_info_p_ = beam_info_p_;
- beam_info_p_ = 0;
- }
-
- 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 ();
- }
-
- if (reqs_drul_[START])
+ if (repeat_ && !beam_p_)
{
- if (beam_p_)
- {
- reqs_drul_[START]->warning (_ ("already have a chord tremolo"));
- return;
- }
-
- prev_start_req_ = reqs_drul_[START];
-
beam_p_ = new Beam;
beam_p_->set_elt_property ("chord-tremolo", SCM_BOOL_T);
- Translator * t = daddy_grav_l ()->get_simple_translator ("Timing_engraver");
- Timing_engraver *timer = dynamic_cast<Timing_engraver*> (t);
- beam_start_location_ = (t) ? timer->measure_position () : Moment (0);
- beam_start_mom_ = now_mom();
- beam_info_p_ = new Beaming_info_list;
-
- announce_element (Score_element_info (beam_p_, reqs_drul_[LEFT]));
- }
-}
-void
-Chord_tremolo_engraver::do_post_move_processing ()
-{
- reqs_drul_ [START] = 0;
+
+ SCM smp = get_property ("measurePosition");
+ Moment mp = (unsmob_moment (smp)) ? *unsmob_moment (smp) : Moment (0);
+ beam_start_location_ = mp;
+ announce_element (Score_element_info (beam_p_, repeat_));
+ }
}
void
-Chord_tremolo_engraver::do_pre_move_processing ()
+Chord_tremolo_engraver::do_removal_processing ()
{
typeset_beam ();
+ if (beam_p_)
+ {
+ repeat_->warning (_ ("unterminated chord tremolo"));
+ finished_beam_p_ = beam_p_;
+ typeset_beam ();
+ }
}
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_p_ = 0;
- delete finished_beam_info_p_;
- finished_beam_info_p_ =0;
-
- reqs_drul_[STOP] = 0;
}
}
-void
-Chord_tremolo_engraver::do_removal_processing ()
-{
- typeset_beam ();
- if (beam_p_)
- {
- prev_start_req_->warning (_ ("unterminated chord tremolo"));
- finished_beam_p_ = beam_p_;
- finished_beam_info_p_ = beam_info_p_;
- typeset_beam ();
- }
-}
void
Chord_tremolo_engraver::acknowledge_element (Score_element_info info)
{
if (Stem* s = dynamic_cast<Stem *> (info.elem_l_))
{
- int type_i = prev_start_req_->type_i_;
- s->set_elt_property ("duration-log", gh_int2scm (intlog2 (type_i) - 2));
-
- s->set_beaming (s->flag_i (), LEFT);
- s->set_beaming ( s->flag_i (), RIGHT);
+ int f = s->flag_i ();
+ f = (f > 2) ? f - 2 : 1;
+ s->set_beaming (f, LEFT);
+ s->set_beaming (f, RIGHT);
/*
URG: this sets the direction of the Stem s.
Stem:: type_i () ->first_head ()->get_direction () ->
directional_element (me).set (d);
-
+
+
+ don't understand this comment.
+ --hwn.
*/
SCM d = s->get_elt_property ("direction");
if (s->type_i () != 1)
{
beam_p_->add_stem (s);
Moment stem_location = now_mom () -
- beam_start_mom_ + beam_start_location_;
- beam_info_p_->add_stem (stem_location,
- (r->duration_.durlog_i_ - 2) >? 1);
+ start_mom_ + beam_start_location_;
}
else
{
::warning (s);
}
}
+ if (Note_head *nh = dynamic_cast<Note_head*> (info.elem_l_))
+ {
+ nh->set_elt_property ("duration-log", gh_int2scm (intlog2 (note_head_i_)));
+ }
+ }
+}
+
+
+void
+Chord_tremolo_engraver::do_post_move_processing ()
+{
+ if (beam_p_ && stop_mom_ == now_mom ())
+ {
+ finished_beam_p_ = beam_p_;
+
+ repeat_ = 0;
+ beam_p_ = 0;
}
}
+
+void
+Chord_tremolo_engraver::do_pre_move_processing ()
+{
+ typeset_beam ();
+}
+
+ADD_THIS_TRANSLATOR(Chord_tremolo_engraver);
+
projects / lilypond.git / blobdiff