source file of the GNU LilyPond music typesetter
- (c) 1999--2005 Jan Nieuwenhuizen <janneke@gnu.org>
+ (c) 1999--2008 Jan Nieuwenhuizen <janneke@gnu.org>
*/
-#include "engraver.hh"
-#include "beaming.hh"
-#include "beam.hh"
-#include "stem.hh"
-#include "warn.hh"
#include "bar-line.hh"
-#include "rest.hh"
+#include "beaming-pattern.hh"
+#include "beam.hh"
+#include "context.hh"
+#include "duration.hh"
+#include "engraver.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 Auto_beam_engraver : public Engraver
{
TRANSLATOR_DECLARATIONS (Auto_beam_engraver);
protected:
- virtual void stop_translation_timestep ();
- virtual void start_translation_timestep ();
- virtual void process_music ();
- virtual bool try_music (Music *);
+ void stop_translation_timestep ();
+ void process_music ();
virtual void finalize ();
- virtual void acknowledge_grob (Grob_info);
- virtual void process_acknowledged_grobs ();
+ virtual void derived_mark () const;
+
+ DECLARE_ACKNOWLEDGER (rest);
+ DECLARE_ACKNOWLEDGER (beam);
+ DECLARE_ACKNOWLEDGER (bar_line);
+ DECLARE_ACKNOWLEDGER (stem);
+ DECLARE_TRANSLATOR_LISTENER (beam_forbid);
+
+ void process_acknowledged ();
private:
bool test_moment (Direction, Moment);
bool is_same_grace_state (Grob *e);
void typeset_beam ();
- Music *forbid_;
+ Stream_event *forbid_;
/*
shortest_mom is the shortest note in the beam.
*/
Moment shortest_mom_;
Spanner *finished_beam_;
- Link_array<Item> *stems_;
+ vector<Item*> *stems_;
- int count_;
+ int process_acknowledged_count_;
Moment last_add_mom_;
/*
Projected ending of the beam we're working on.
Moment beam_start_moment_;
Moment beam_start_location_;
- bool subdivide_beams_;
- Moment beat_length_;
-
// We act as if beam were created, and start a grouping anyway.
- Beaming_info_list *grouping_;
- SCM beam_settings_; // ugh. should protect ?
+ Beaming_pattern *grouping_;
+ SCM beam_settings_;
+
+ Beaming_pattern *finished_grouping_;
+
- Beaming_info_list *finished_grouping_;
+ Beaming_options beaming_options_;
+ Beaming_options finished_beaming_options_;
+
+
+ void check_bar_property ();
};
+void
+Auto_beam_engraver::derived_mark () const
+{
+ scm_gc_mark (beam_settings_);
+}
+
+void
+Auto_beam_engraver::check_bar_property ()
+{
+ /* Duplicated from process_music (), since
+ Repeat_acknowledge_engraver::process_music () may also set whichBar. */
+
+ Moment now = now_mom ();
+ if (scm_is_string (get_property ("whichBar"))
+ && beam_start_moment_ < now)
+ {
+ consider_end (shortest_mom_);
+ junk_beam ();
+ }
+}
+
void
Auto_beam_engraver::process_music ()
{
+ /*
+ don't beam over skips
+ */
+ if (stems_)
+ {
+ Moment now = now_mom ();
+ if (extend_mom_ < now)
+ end_beam ();
+ }
+
if (scm_is_string (get_property ("whichBar")))
{
consider_end (shortest_mom_);
Auto_beam_engraver::Auto_beam_engraver ()
{
forbid_ = 0;
- count_ = 0;
+ process_acknowledged_count_ = 0;
stems_ = 0;
shortest_mom_ = Moment (Rational (1, 8));
finished_beam_ = 0;
beam_settings_ = SCM_EOL;
}
-bool
-Auto_beam_engraver::try_music (Music *m)
+IMPLEMENT_TRANSLATOR_LISTENER (Auto_beam_engraver, beam_forbid);
+void
+Auto_beam_engraver::listen_beam_forbid (Stream_event *ev)
{
- if (m->is_mus_type ("beam-forbid-event"))
- {
- forbid_ = m;
- return true;
- }
-
- return false;
+ ASSIGN_EVENT_ONCE (forbid_, ev);
}
bool
test.smobbed_copy ())
!= SCM_BOOL_F;
}
-
+
void
Auto_beam_engraver::consider_begin (Moment test_mom)
{
if (to_boolean (get_property ("skipTypesetting")))
return 0;
- Spanner *beam = new Spanner (beam_settings_, context ()->get_grob_key ("Beam"));
- for (int i = 0; i < stems_->size (); i++)
- {
- /*
- watch out for stem tremolos and abbreviation beams
- */
- if (Stem::get_beam ((*stems_)[i]))
- {
- scm_gc_unprotect_object (beam->self_scm ());
- return 0;
- }
- Beam::add_stem (beam, (*stems_)[i]);
- }
+ for (vsize i = 0; i < stems_->size (); i++)
+ if (Stem::get_beam ((*stems_)[i]))
+ return 0;
+
+ /*
+ Can't use make_spanner_from_properties () because we have to use
+ beam_settings_.
+ */
+ Spanner *beam = new Spanner (beam_settings_);
+
+ for (vsize i = 0; i < stems_->size (); i++)
+ Beam::add_stem (beam, (*stems_)[i]);
announce_grob (beam, (*stems_)[0]->self_scm ());
return;
}
- stems_ = new Link_array<Item>;
- grouping_ = new Beaming_info_list;
+ stems_ = new vector<Item*>;
+ grouping_ = new Beaming_pattern ();
+ beaming_options_.from_context (context ());
beam_settings_ = updated_grob_properties (context (), ly_symbol2scm ("Beam"));
beam_start_moment_ = now_mom ();
beam_start_location_
= robust_scm2moment (get_property ("measurePosition"), Moment (0));
- subdivide_beams_ = ly_scm2bool (get_property ("subdivideBeams"));
- beat_length_ = robust_scm2moment (get_property ("beatLength"), Moment (1, 4));
}
void
Auto_beam_engraver::end_beam ()
{
if (stems_->size () < 2)
- {
- junk_beam ();
- }
+ junk_beam ();
else
{
finished_beam_ = create_beam ();
+
if (finished_beam_)
- finished_grouping_ = grouping_;
+ {
+ announce_end_grob (finished_beam_, SCM_EOL);
+ finished_grouping_ = grouping_;
+ finished_beaming_options_ = beaming_options_;
+ }
delete stems_;
stems_ = 0;
grouping_ = 0;
{
if (finished_beam_)
{
- finished_grouping_->beamify (beat_length_, subdivide_beams_);
+ if (!finished_beam_->get_bound (RIGHT))
+ finished_beam_->set_bound (RIGHT, finished_beam_->get_bound (LEFT));
+
+ finished_grouping_->beamify (finished_beaming_options_);
Beam::set_beaming (finished_beam_, finished_grouping_);
finished_beam_ = 0;
}
}
-void
-Auto_beam_engraver::start_translation_timestep ()
-{
- count_ = 0;
- /*
- don't beam over skips
- */
- if (stems_)
- {
- Moment now = now_mom ();
- if (extend_mom_ < now)
- {
- end_beam ();
- }
- }
- forbid_ = 0;
-}
-
void
Auto_beam_engraver::stop_translation_timestep ()
{
typeset_beam ();
+ process_acknowledged_count_ = 0;
+ forbid_ = 0;
}
void
junk_beam ();
}
+
void
-Auto_beam_engraver::acknowledge_grob (Grob_info info)
+Auto_beam_engraver::acknowledge_beam (Grob_info info)
{
- /* Duplicated from process_music (), since
- Repeat_acknowledge_engraver::process_music () may also set whichBar. */
- if (scm_is_string (get_property ("whichBar"))
- && beam_start_moment_ < now_mom ())
- {
- consider_end (shortest_mom_);
- junk_beam ();
- }
+ (void)info;
+ check_bar_property ();
+ if (stems_)
+ end_beam ();
+}
+
+void
+Auto_beam_engraver::acknowledge_bar_line (Grob_info info)
+{
+ (void)info;
+ check_bar_property ();
+ if (stems_)
+ end_beam ();
+}
+void
+Auto_beam_engraver::acknowledge_rest (Grob_info info)
+{
+ (void)info;
+ check_bar_property ();
if (stems_)
+ end_beam ();
+}
+
+void
+Auto_beam_engraver::acknowledge_stem (Grob_info info)
+{
+ check_bar_property ();
+ Item *stem = dynamic_cast<Item *> (info.grob ());
+ Stream_event *ev = info.ultimate_event_cause ();
+ if (!ev->in_event_class ("rhythmic-event"))
{
- if (Beam::has_interface (info.grob_))
- {
- end_beam ();
- }
- else if (Bar_line::has_interface (info.grob_))
- {
- end_beam ();
- }
- else if (Rest::has_interface (info.grob_))
- {
- end_beam ();
- }
+ programming_error ("stem must have rhythmic structure");
+ return;
}
- if (Stem::has_interface (info.grob_))
+ /*
+ Don't (start) auto-beam over empty stems; skips or rests
+ */
+ if (!Stem::head_count (stem))
{
- Item *stem = dynamic_cast<Item *> (info.grob_);
- Music *m = info.music_cause ();
- if (!m->is_mus_type ("rhythmic-event"))
- {
- programming_error ("stem must have rhythmic structure");
- return;
- }
-
- /*
- Don't (start) auto-beam over empty stems; skips or rests
- */
- if (!Stem::head_count (stem))
- {
- if (stems_)
- end_beam ();
- return;
- }
-
- if (Stem::get_beam (stem))
- {
- if (stems_)
- junk_beam ();
- return;
- }
-
- int durlog = unsmob_duration (m->get_property ("duration"))->duration_log ();
-
- if (durlog <= 2)
- {
- if (stems_)
- end_beam ();
- return;
- }
-
- /*
- ignore grace notes.
- */
- if (bool (beam_start_location_.grace_part_) != bool (now_mom ().grace_part_))
- return;
+ if (stems_)
+ end_beam ();
+ return;
+ }
- Moment dur = unsmob_duration (m->get_property ("duration"))->get_length ();
- /* FIXME:
+ if (Stem::get_beam (stem))
+ {
+ if (stems_)
+ junk_beam ();
+ return;
+ }
- This comment has been here since long:
+ int durlog = unsmob_duration (ev->get_property ("duration"))->duration_log ();
- if shortest duration would change
- consider ending and beginning beam first.
+ if (durlog <= 2)
+ {
+ if (stems_)
+ end_beam ();
+ return;
+ }
- but the code didn't match: */
-#if 1
- consider_end (dur);
- consider_begin (dur);
+ /*
+ ignore grace notes.
+ */
+ Moment now = now_mom ();
+ if (bool (beam_start_location_.grace_part_) != bool (now.grace_part_))
+ return;
- if (dur < shortest_mom_)
- shortest_mom_ = dur;
-#else
- /* I very much suspect that we wanted: */
+ Moment dur = unsmob_duration (ev->get_property ("duration"))->get_length ();
- consider_end (shortest_mom_);
- if (dur < shortest_mom_)
- {
- shortest_mom_ = dur;
- consider_end (shortest_mom_);
- }
- consider_begin (shortest_mom_);
-#endif
+ consider_end (dur);
+ consider_begin (dur);
- if (!stems_)
- return;
+ if (dur < shortest_mom_)
+ shortest_mom_ = dur;
- Moment now = now_mom ();
+ if (!stems_)
+ return;
- grouping_->add_stem (now - beam_start_moment_ + beam_start_location_,
- durlog - 2);
- stems_->push (stem);
- last_add_mom_ = now;
- extend_mom_ = (extend_mom_ >? now) + m->get_length ();
- }
+ grouping_->add_stem (now - beam_start_moment_ + beam_start_location_,
+ durlog - 2,
+ Stem::is_invisible (stem));
+ stems_->push_back (stem);
+ last_add_mom_ = now;
+ extend_mom_ = max (extend_mom_, now) + get_event_length (ev, now);
}
void
-Auto_beam_engraver::process_acknowledged_grobs ()
+Auto_beam_engraver::process_acknowledged ()
{
- if (!count_)
+ if (extend_mom_ > now_mom ())
+ return;
+
+ if (!process_acknowledged_count_)
{
consider_end (shortest_mom_);
consider_begin (shortest_mom_);
}
- else if (count_ > 1)
+ else if (process_acknowledged_count_ > 1)
{
if (stems_)
{
Moment now = now_mom ();
if ((extend_mom_ < now)
|| ((extend_mom_ == now) && (last_add_mom_ != now)))
- {
- end_beam ();
- }
+ end_beam ();
else if (!stems_->size ())
- {
- junk_beam ();
- }
+ junk_beam ();
}
}
- count_++;
+ process_acknowledged_count_++;
}
+ADD_ACKNOWLEDGER (Auto_beam_engraver, stem);
+ADD_ACKNOWLEDGER (Auto_beam_engraver, bar_line);
+ADD_ACKNOWLEDGER (Auto_beam_engraver, beam);
+ADD_ACKNOWLEDGER (Auto_beam_engraver, rest);
ADD_TRANSLATOR (Auto_beam_engraver,
- /* descr */ "Generate beams based on measure characteristics and observed "
- "Stems. Uses beatLength, measureLength and measurePosition to decide "
- "when to start and stop a beam. Overriding beaming is done through "
- "@ref{Stem_engraver} properties @code{stemLeftBeamCount} and "
- "@code{stemRightBeamCount}. ",
- /* creats*/ "Beam",
- /* accepts */ "beam-forbid-event",
- /* acks */ "stem-interface rest-interface beam-interface bar-line-interface",
- /* reads */ "autoBeaming autoBeamSettings beatLength subdivideBeams",
- /* write */ "");
+ /* doc */
+ "Generate beams based on measure characteristics and observed"
+ " Stems. Uses @code{beatLength}, @code{measureLength}, and"
+ " @code{measurePosition} to decide when to start and stop a"
+ " beam. Overriding beaming is done through"
+ " @ref{Stem_engraver} properties @code{stemLeftBeamCount} and"
+ " @code{stemRightBeamCount}.",
+
+ /* create */
+ "Beam ",
+
+ /* read */
+ "autoBeaming "
+ "autoBeamSettings "
+ "beatLength "
+ "subdivideBeams ",
+
+ /* write */
+ ""
+ );
projects / lilypond.git / blobdiff