-/*
- new-chord-tremolo-engraver.cc -- implement Chord_tremolo_engraver
-
- source file of the GNU LilyPond music typesetter
-
- (c) 2000--2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
-
+/*
+ chord-tremolo-engraver.cc -- implement Chord_tremolo_engraver
+
+ source file of the GNU LilyPond music typesetter
+
+ (c) 2000--2005 Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
#include "beam.hh"
#include "item.hh"
#include "chord-tremolo-iterator.hh"
#include "stem-tremolo.hh"
-#include "music-list.hh"
-#include "math.h" // ceil
+#include "math.h" // ceil
/**
- create dots if appropriate.
- create TremoloBeam iso Beam?
-
*/
class Chord_tremolo_engraver : public Engraver
{
void typeset_beam ();
TRANSLATOR_DECLARATIONS (Chord_tremolo_engraver);
protected:
- Repeated_music * repeat_;
+ Music *repeat_;
/// moment (global time) where beam started.
Moment start_mom_;
Moment stop_mom_;
- int flags_ ;
+ int flags_;
int total_duration_flags_;
-
+
/// location within measure where beam started.
Moment beam_start_location_;
- bool sequential_body_b_;
- Spanner * beam_;
- Spanner * finished_beam_;
- Item * stem_tremolo_;
+ bool body_is_sequential_;
+ Spanner *beam_;
+ Spanner *finished_beam_;
+ Item *stem_tremolo_;
protected:
virtual void finalize ();
- virtual bool try_music (Music*);
+ virtual bool try_music (Music *);
virtual void acknowledge_grob (Grob_info);
virtual void stop_translation_timestep ();
virtual void start_translation_timestep ();
Chord_tremolo_engraver::Chord_tremolo_engraver ()
{
- beam_ = finished_beam_ = 0;
+ beam_ = finished_beam_ = 0;
repeat_ = 0;
flags_ = 0;
stem_tremolo_ = 0;
- sequential_body_b_ = false;
+ body_is_sequential_ = false;
}
bool
-Chord_tremolo_engraver::try_music (Music * m)
+Chord_tremolo_engraver::try_music (Music *m)
{
- Repeated_music * rp = dynamic_cast<Repeated_music*> (m);
- if (rp
- && rp->get_property ("iterator-ctor") == Chord_tremolo_iterator::constructor_proc
- && !repeat_)
+ if (m->is_mus_type ("repeated-music")
+ && m->get_property ("iterator-ctor") == Chord_tremolo_iterator::constructor_proc
+ && !repeat_)
{
- Moment l = rp->get_length ();
- repeat_ = rp;
+ Moment l = m->get_length ();
+ repeat_ = m;
start_mom_ = now_mom ();
stop_mom_ = start_mom_ + l;
- Sequential_music * seq = dynamic_cast<Sequential_music*> (rp->body ());
- sequential_body_b_ = seq;
+ Music *body = Repeated_music::body (m);
+ body_is_sequential_ = body->is_mus_type ("sequential-music");
- int elt_count = seq ? scm_ilength (seq-> music_list ()) : 1;
+ int elt_count = body_is_sequential_ ? scm_ilength (body->get_property ("elements")) : 1;
- if (seq && elt_count != 2)
+ if (body_is_sequential_ && elt_count != 2)
{
- rp->origin ()->warning (_f ("Chord tremolo with %d elements. Must have two elements.", elt_count));
+ m->origin ()->warning (_f ("expect 2 elements for chord tremolo, found %d", elt_count));
}
if (elt_count <= 0)
elt_count = 1;
-
+
Rational total_dur = l.main_part_;
- Rational note_dur = total_dur / Rational (elt_count * repeat_->repeat_count ());
+ Rational note_dur = total_dur / Rational (elt_count * Repeated_music::repeat_count (repeat_));
+
+ total_duration_flags_ = max (0, (intlog2 (total_dur.den ()) - 2));
+
+ flags_ = intlog2 (note_dur.den ()) -2;
- total_duration_flags_ = 0 >? (intlog2 (total_dur.den ()) - 2);
-
- flags_ = intlog2 (note_dur.den ()) -2 ;
-
return true;
}
void
Chord_tremolo_engraver::process_music ()
{
- if (repeat_ && sequential_body_b_ && !beam_)
+ if (repeat_ && body_is_sequential_ && !beam_)
{
beam_ = make_spanner ("Beam", repeat_->self_scm ());
beam_->set_property ("chord-tremolo", SCM_BOOL_T);
void
Chord_tremolo_engraver::acknowledge_grob (Grob_info info)
{
- if (beam_ && Stem::has_interface (info.grob_))
+ if (beam_ && Stem::has_interface (info.grob ()))
{
- Grob * s = info.grob_;
+ Grob *s = info.grob ();
if (start_mom_ == now_mom ())
Stem::set_beaming (s, flags_, RIGHT);
else
Stem::set_beaming (s, flags_, LEFT);
-
+
if (Stem::duration_log (s) != 1)
{
beam_->set_property ("gap-count", scm_int2num (flags_ - total_duration_flags_));
::warning (s);
}
}
- else if (repeat_ &&
- flags_ && !sequential_body_b_ && Stem::has_interface (info.grob_))
+ else if (repeat_
+ && flags_ && !body_is_sequential_ && Stem::has_interface (info.grob ()))
{
stem_tremolo_ = make_item ("StemTremolo", repeat_->self_scm ());
stem_tremolo_->set_property ("flag-count",
scm_int2num (flags_));
stem_tremolo_->set_property ("stem",
- info.grob_->self_scm ());
- stem_tremolo_->set_parent (info.grob_, X_AXIS);
+ info.grob ()->self_scm ());
+ stem_tremolo_->set_parent (info.grob (), X_AXIS);
}
}
-
void
Chord_tremolo_engraver::start_translation_timestep ()
{
}
}
-
void
Chord_tremolo_engraver::stop_translation_timestep ()
{
{
repeat_ = 0;
if (beam_)
- programming_error ("Huh, beam and stem tremolo?");
+ programming_error ("beam and stem tremolo?");
stem_tremolo_ = 0;
}
typeset_beam ();
}
-
-
-ENTER_DESCRIPTION (Chord_tremolo_engraver,
-/* descr */ "Generates beams for tremolo repeats.",
-/* creats*/ "Beam",
-/* accepts */ "repeated-music",
-/* acks */ "stem-interface note-head-interface",
-/* reads */ "",
-/* write */ "");
+ADD_TRANSLATOR (Chord_tremolo_engraver,
+ /* descr */ "Generates beams for tremolo repeats.",
+ /* creats*/ "Beam",
+ /* accepts */ "repeated-music",
+ /* acks */ "stem-interface note-head-interface",
+ /* reads */ "",
+ /* write */ "");
projects / lilypond.git / blobdiff