-/*
- beam-engraver.cc -- implement Beam_engraver
-
+/*
+ beam-engraver.cc -- implement Beam_engraver
+
source file of the GNU LilyPond music typesetter
-
- (c) 1998--2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
-
- */
-#include "engraver.hh"
-#include "event.hh"
+ (c) 1998--2008 Han-Wen Nienhuys <hanwen@xs4all.nl>
+*/
+
#include "beam.hh"
-#include "stem.hh"
-#include "warn.hh"
-#include "beaming.hh"
-#include "score-engraver.hh"
-#include "rest.hh"
+#include "beaming-pattern.hh"
+#include "context.hh"
#include "drul-array.hh"
+#include "duration.hh"
+#include "engraver.hh"
+#include "international.hh"
#include "item.hh"
+#include "rest.hh"
#include "spanner.hh"
-#include "context.hh"
+#include "stream-event.hh"
+#include "stem.hh"
+#include "warn.hh"
+
+#include "translator.icc"
class Beam_engraver : public Engraver
{
-protected:
- Music * start_ev_;
-
+public:
+ DECLARE_ACKNOWLEDGER (stem);
+ DECLARE_ACKNOWLEDGER (rest);
+
+protected:
+ Stream_event *start_ev_;
+
Spanner *finished_beam_;
Spanner *beam_;
- Music * prev_start_ev_;
+ Stream_event *prev_start_ev_;
- Music * now_stop_ev_;
-
- Beaming_info_list * beam_info_;
- Beaming_info_list * finished_beam_info_;
+ Stream_event *stop_ev_;
+
+ Beaming_pattern *beam_info_;
+ Beaming_pattern *finished_beam_info_;
/// location within measure where beam started.
Moment beam_start_location_;
/// moment (global time) where beam started.
Moment beam_start_mom_;
- bool subdivide_beams_;
- Moment beat_length_;
-
+ Beaming_options beaming_options_;
+ Beaming_options finished_beaming_options_;
+
void typeset_beam ();
void set_melisma (bool);
Moment last_stem_added_at_;
- virtual void stop_translation_timestep ();
- virtual void start_translation_timestep ();
+ void stop_translation_timestep ();
+ void start_translation_timestep ();
virtual void finalize ();
- virtual void acknowledge_grob (Grob_info);
- virtual bool try_music (Music*);
- virtual void process_music ();
+ void process_music ();
- virtual bool valid_start_point();
+ virtual bool valid_start_point ();
virtual bool valid_end_point ();
-
+
+ DECLARE_TRANSLATOR_LISTENER (beam);
public:
- TRANSLATOR_DECLARATIONS(Beam_engraver);
+ TRANSLATOR_DECLARATIONS (Beam_engraver);
};
-
/*
Hmm. this isn't necessary, since grace beams and normal beams are
always nested.
- */
+*/
bool
-Beam_engraver::valid_start_point()
+Beam_engraver::valid_start_point ()
{
Moment n = now_mom ();
}
bool
-Beam_engraver::valid_end_point()
+Beam_engraver::valid_end_point ()
{
return valid_start_point ();
}
Beam_engraver::Beam_engraver ()
{
beam_ = 0;
- finished_beam_ =0;
- finished_beam_info_=0;
- beam_info_ =0;
- now_stop_ev_ = 0;
+ finished_beam_ = 0;
+ finished_beam_info_ = 0;
+ beam_info_ = 0;
+ stop_ev_ = 0;
start_ev_ = 0;
- prev_start_ev_ =0;
+ prev_start_ev_ = 0;
}
-bool
-Beam_engraver::try_music (Music *m)
+IMPLEMENT_TRANSLATOR_LISTENER (Beam_engraver, beam);
+void
+Beam_engraver::listen_beam (Stream_event *ev)
{
- if (m->is_mus_type ("beam-event"))
- {
- Direction d = to_dir (m->get_mus_property ("span-direction"));
- if (d == START && !valid_start_point ())
- return false;
- if (d == STOP && !valid_end_point ())
- return false;
+ Direction d = to_dir (ev->get_property ("span-direction"));
- if (d == START)
- {
- start_ev_ = m;
- }
- else if (d==STOP)
- {
- now_stop_ev_ = m;
- }
- return true;
- }
- return false;
+ if (d == START && valid_start_point ())
+ ASSIGN_EVENT_ONCE (start_ev_, ev);
+ else if (d == STOP && valid_end_point ())
+ ASSIGN_EVENT_ONCE (stop_ev_, ev);
}
void
{
SCM b = get_property ("autoBeaming");
if (!to_boolean (b))
- daddy_context_->set_property ("beamMelismaBusy", ml ? SCM_BOOL_T :SCM_BOOL_F);
+ context ()->set_property ("beamMelismaBusy", ml ? SCM_BOOL_T : SCM_BOOL_F);
}
void
Beam_engraver::process_music ()
{
- if (beam_ && !to_boolean (get_property ("allowBeamBreak")))
- {
- get_score_engraver ()->forbid_breaks ();
- }
-
if (start_ev_)
{
if (beam_)
set_melisma (true);
prev_start_ev_ = start_ev_;
- beam_ = make_spanner ("Beam");
- SCM smp = get_property ("measurePosition");
- Moment mp = (unsmob_moment (smp)) ? *unsmob_moment (smp) : Moment (0);
+ beam_ = make_spanner ("Beam", start_ev_->self_scm ());
+ Moment mp (robust_scm2moment (get_property ("measurePosition"), Moment (0)));
beam_start_location_ = mp;
beam_start_mom_ = now_mom ();
-
- beam_info_ = new Beaming_info_list;
-
+
+ beaming_options_.from_context (context ());
+ beam_info_ = new Beaming_pattern;
/* urg, must copy to Auto_beam_engraver too */
- announce_grob (beam_, start_ev_->self_scm());
}
+ typeset_beam ();
+ if (stop_ev_ && beam_)
+ {
+ announce_end_grob (beam_, stop_ev_->self_scm ());
+
+ }
}
-
void
Beam_engraver::typeset_beam ()
{
if (finished_beam_)
{
- finished_beam_info_->beamify(beat_length_, subdivide_beams_);
+ if (!finished_beam_->get_bound (RIGHT))
+ finished_beam_->set_bound (RIGHT, finished_beam_->get_bound (LEFT));
+
+ finished_beam_info_->beamify (finished_beaming_options_);
Beam::set_beaming (finished_beam_, finished_beam_info_);
- typeset_grob (finished_beam_);
+
delete finished_beam_info_;
- finished_beam_info_ =0;
+ finished_beam_info_ = 0;
finished_beam_ = 0;
}
}
Beam_engraver::start_translation_timestep ()
{
start_ev_ = 0;
-
+
if (beam_)
{
set_melisma (true);
-
- subdivide_beams_ = to_boolean(get_property("subdivideBeams"));
- beat_length_ = *unsmob_moment (get_property ("beatLength"));
}
}
void
Beam_engraver::stop_translation_timestep ()
{
- typeset_beam ();
- if (now_stop_ev_ )
+ if (stop_ev_)
{
finished_beam_ = beam_;
finished_beam_info_ = beam_info_;
-
- now_stop_ev_ = 0;
+ finished_beaming_options_ = beaming_options_;
+
+ stop_ev_ = 0;
beam_ = 0;
beam_info_ = 0;
- typeset_beam();
+ typeset_beam ();
set_melisma (false);
}
}
}
void
-Beam_engraver::acknowledge_grob (Grob_info info)
+Beam_engraver::acknowledge_rest (Grob_info info)
{
- if (beam_)
+ if (beam_
+ && !scm_is_number (info.grob ()->get_property_data ("staff-position")))
{
- if (Rest::has_interface (info.grob_))
- {
- info.grob_->add_offset_callback (Beam::rest_collision_callback_proc, Y_AXIS);
- }
- else if (Stem::has_interface (info.grob_))
- {
- Moment now = now_mom();
-
- if (!valid_start_point ())
- return ;
-
- Item *stem = dynamic_cast<Item*> (info.grob_);
- if (Stem::get_beam (stem))
- return;
-
- Music* m = info.music_cause();
- if (!m->is_mus_type ("rhythmic-event"))
- {
- String s = _ ("stem must have Rhythmic structure");
- if (info.music_cause ())
- info.music_cause ()->origin ()->warning (s);
- else
- ::warning (s);
-
- return;
- }
-
-
- last_stem_added_at_ = now;
- int durlog = unsmob_duration (m->get_mus_property ("duration"))-> duration_log ();
- if (durlog <= 2)
- {
- m->origin ()->warning (_ ("stem doesn't fit in beam"));
- prev_start_ev_->origin ()->warning (_ ("beam was started here"));
- /*
- don't return, since
-
- [r4 c8] can just as well be modern notation.
- */
- }
-
- stem->set_grob_property ("duration-log",
- scm_int2num (durlog));
- Moment stem_location = now - beam_start_mom_ + beam_start_location_;
- beam_info_->add_stem (stem_location,
- (durlog- 2) >? 0);
- Beam::add_stem (beam_, stem);
- }
+ chain_offset_callback (info.grob (),
+ Beam::rest_collision_callback_proc, Y_AXIS);
}
}
+void
+Beam_engraver::acknowledge_stem (Grob_info info)
+{
+ if (!beam_)
+ return;
+
+ Moment now = now_mom ();
+ if (!valid_start_point ())
+ return;
+ Item *stem = dynamic_cast<Item *> (info.grob ());
+ if (Stem::get_beam (stem))
+ return;
-ENTER_DESCRIPTION(Beam_engraver,
-/* descr */ "Handles Beam events by engraving Beams. If omitted, then notes will be "
-"printed with flags instead of beams.",
-/* creats*/ "Beam",
-/* accepts */ "beam-event",
-/* acks */ "stem-interface rest-interface",
-/* reads */ "beamMelismaBusy beatLength subdivideBeams",
-/* write */ "");
+
+
+ Stream_event *ev = info.ultimate_event_cause ();
+ if (!ev->in_event_class ("rhythmic-event"))
+ {
+ info.grob ()->warning (_ ("stem must have Rhythmic structure"));
+ return;
+ }
+
+ last_stem_added_at_ = now;
+ int durlog = unsmob_duration (ev->get_property ("duration"))->duration_log ();
+ if (durlog <= 2)
+ {
+ ev->origin ()->warning (_ ("stem does not fit in beam"));
+ prev_start_ev_->origin ()->warning (_ ("beam was started here"));
+ /*
+ don't return, since
+
+ [r4 c8] can just as well be modern notation.
+ */
+ }
+
+ stem->set_property ("duration-log",
+ scm_from_int (durlog));
+ Moment stem_location = now - beam_start_mom_ + beam_start_location_;
+ beam_info_->add_stem (stem_location,
+ max (durlog- 2, 0),
+ Stem::is_invisible (stem));
+ Beam::add_stem (beam_, stem);
+}
+
+ADD_ACKNOWLEDGER (Beam_engraver, stem);
+ADD_ACKNOWLEDGER (Beam_engraver, rest);
+
+ADD_TRANSLATOR (Beam_engraver,
+ /* doc */
+ "Handle @code{Beam} events by engraving beams. If omitted,"
+ " then notes are printed with flags instead of beams.",
+
+ /* create */
+ "Beam ",
+
+ /* read */
+ "beamMelismaBusy "
+ "beatLength "
+ "subdivideBeams ",
+ /* write */
+ "forbidBreak"
+ );
class Grace_beam_engraver : public Beam_engraver
{
public:
- TRANSLATOR_DECLARATIONS(Grace_beam_engraver);
+ TRANSLATOR_DECLARATIONS (Grace_beam_engraver);
+ DECLARE_TRANSLATOR_LISTENER (beam);
+
protected:
- virtual bool valid_start_point();
+ virtual bool valid_start_point ();
virtual bool valid_end_point ();
};
-Grace_beam_engraver::Grace_beam_engraver()
+Grace_beam_engraver::Grace_beam_engraver ()
{
}
bool
-Grace_beam_engraver::valid_start_point()
+Grace_beam_engraver::valid_start_point ()
{
Moment n = now_mom ();
return n.grace_part_ != Rational (0);
}
-
bool
Grace_beam_engraver::valid_end_point ()
{
return beam_ && valid_start_point ();
}
+/*
+ Ugh, C&P code.
+ */
+IMPLEMENT_TRANSLATOR_LISTENER (Grace_beam_engraver, beam);
+void
+Grace_beam_engraver::listen_beam (Stream_event *ev)
+{
+ Direction d = to_dir (ev->get_property ("span-direction"));
+
+ if (d == START && valid_start_point ())
+ start_ev_ = ev;
+ else if (d == STOP && valid_end_point ())
+ stop_ev_ = ev;
+}
+
+
+ADD_ACKNOWLEDGER (Grace_beam_engraver, stem);
+ADD_ACKNOWLEDGER (Grace_beam_engraver, rest);
+
+ADD_TRANSLATOR (Grace_beam_engraver,
+ /* doc */
+ "Handle @code{Beam} events by engraving beams. If omitted,"
+ " then notes are printed with flags instead of beams. Only"
+ " engraves beams when we are at grace points in time.",
+
+ /* create */
+ "Beam ",
+ /* read */
+ "beamMelismaBusy "
+ "beatLength "
+ "subdivideBeams ",
-ENTER_DESCRIPTION(Grace_beam_engraver,
-/* descr */ "Handles Beam events by engraving Beams. If omitted, then notes will "
-"be printed with flags instead of beams. Only engraves beams when we "
-" are at grace points in time. "
-,
-/* creats*/ "Beam",
-/* accepts */ "beam-event",
-/* acks */ "stem-interface rest-interface",
-/* reads */ "beamMelismaBusy beatLength allowBeamBreak subdivideBeams",
-/* write */ "");
+ /* write */
+ ""
+ );
projects / lilypond.git / blobdiff