/*
- beam-engraver.cc -- implement Beam_engraver
+ This file is part of LilyPond, the GNU music typesetter.
- source file of the GNU LilyPond music typesetter
+ Copyright (C) 1998--2015 Han-Wen Nienhuys <hanwen@xs4all.nl>
- (c) 1998--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
+ LilyPond is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ LilyPond is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
*/
-#include "engraver.hh"
#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 "directional-element-interface.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 "duration.hh"
+#include "stream-event.hh"
+#include "stem.hh"
+#include "unpure-pure-container.hh"
+#include "warn.hh"
#include "translator.icc"
class Beam_engraver : public Engraver
{
public:
- DECLARE_ACKNOWLEDGER (stem);
- DECLARE_ACKNOWLEDGER (rest);
+ void acknowledge_stem (Grob_info);
+ void acknowledge_rest (Grob_info);
+ void listen_beam (Stream_event *);
+
protected:
- Music *start_ev_;
+ Stream_event *start_ev_;
Spanner *finished_beam_;
Spanner *beam_;
- Music *prev_start_ev_;
+ Stream_event *prev_start_ev_;
- Music *now_stop_ev_;
+ Stream_event *stop_ev_;
- Beaming_info_list *beam_info_;
- Beaming_info_list *finished_beam_info_;
+ Direction forced_direction_;
+
+ 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);
void start_translation_timestep ();
virtual void finalize ();
- virtual bool try_music (Music *);
void process_music ();
virtual bool valid_start_point ();
return valid_start_point ();
}
-Beam_engraver::Beam_engraver ()
+Beam_engraver::Beam_engraver (Context *c)
+ : Engraver (c)
{
beam_ = 0;
finished_beam_ = 0;
finished_beam_info_ = 0;
beam_info_ = 0;
- now_stop_ev_ = 0;
+ forced_direction_ = CENTER;
+ stop_ev_ = 0;
start_ev_ = 0;
prev_start_ev_ = 0;
}
-bool
-Beam_engraver::try_music (Music *m)
+void
+Beam_engraver::listen_beam (Stream_event *ev)
{
- if (m->is_mus_type ("beam-event"))
+ Direction d = to_dir (ev->get_property ("span-direction"));
+
+ if (d == START && valid_start_point ())
{
- Direction d = to_dir (m->get_property ("span-direction"));
- if (d == START && !valid_start_point ())
- return false;
- if (d == STOP && !valid_end_point ())
- return false;
-
- if (d == START)
- start_ev_ = m;
- else if (d == STOP)
- now_stop_ev_ = m;
- return true;
+ ASSIGN_EVENT_ONCE (start_ev_, ev);
+
+ Direction updown = to_dir (ev->get_property ("direction"));
+ if (updown)
+ forced_direction_ = updown;
}
- return false;
+ else if (d == STOP && valid_end_point ())
+ ASSIGN_EVENT_ONCE (stop_ev_, ev);
}
void
void
Beam_engraver::process_music ()
{
- if (beam_ && !to_boolean (get_property ("allowBeamBreak")))
- get_score_engraver ()->forbid_breaks ();
-
if (start_ev_)
{
if (beam_)
- {
- start_ev_->origin ()->warning (_ ("already have a beam"));
- return;
- }
+ {
+ start_ev_->origin ()->warning (_ ("already have a beam"));
+ return;
+ }
set_melisma (true);
prev_start_ev_ = start_ev_;
beam_ = make_spanner ("Beam", start_ev_->self_scm ());
- Moment mp (robust_scm2moment (get_property ("measurePosition"), Moment (0)));
+
+ 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 */
}
+
+ typeset_beam ();
+ if (stop_ev_ && beam_)
+ {
+ announce_end_grob (beam_, stop_ev_->self_scm ());
+
+ }
}
void
{
if (finished_beam_)
{
- finished_beam_info_->beamify (beat_length_, subdivide_beams_);
+ Grob *stem = finished_beam_->get_bound (RIGHT);
+ if (!stem)
+ {
+ stem = finished_beam_->get_bound (LEFT);
+ if (stem)
+ finished_beam_->set_bound (RIGHT, stem);
+ }
+
+ if (stem && forced_direction_)
+ set_grob_direction (stem, forced_direction_);
+
+ forced_direction_ = CENTER;
+ finished_beam_info_->beamify (finished_beaming_options_);
+
Beam::set_beaming (finished_beam_, finished_beam_info_);
delete finished_beam_info_;
finished_beam_info_ = 0;
finished_beam_ = 0;
+
}
}
start_ev_ = 0;
if (beam_)
- {
- set_melisma (true);
-
- subdivide_beams_ = to_boolean (get_property ("subdivideBeams"));
- beat_length_ = robust_scm2moment (get_property ("beatLength"), Moment (1, 4));
- }
+ set_melisma (true);
}
void
Beam_engraver::stop_translation_timestep ()
{
- typeset_beam ();
- if (now_stop_ev_)
+ if (stop_ev_)
{
finished_beam_ = beam_;
finished_beam_info_ = beam_info_;
+ finished_beaming_options_ = beaming_options_;
- now_stop_ev_ = 0;
+ stop_ev_ = 0;
beam_ = 0;
beam_info_ = 0;
typeset_beam ();
prev_start_ev_->origin ()->warning (_ ("unterminated beam"));
/*
- we don't typeset it, (we used to, but it was commented
- out. Reason unknown) */
+ we don't typeset it, (we used to, but it was commented
+ out. Reason unknown) */
beam_->suicide ();
delete beam_info_;
}
void
Beam_engraver::acknowledge_rest (Grob_info info)
{
- if (beam_)
- {
- chain_offset_callback (info.grob(),
- Beam::rest_collision_callback_proc, Y_AXIS);
- }
+ if (beam_
+ && !scm_is_number (info.grob ()->get_property_data ("staff-position")))
+ chain_offset_callback (info.grob (),
+ Unpure_pure_container::make_smob
+ (Beam::rest_collision_callback_proc,
+ Beam::pure_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;
+ // It's suboptimal that we don't support callbacks returning ##f,
+ // but this makes beams have no effect on "stems" reliably in
+ // TabStaff when \tabFullNotation is switched off: the real stencil
+ // callback for beams is called quite late in the process, and we
+ // don't want to trigger it early.
+ if (scm_is_false (beam_->get_property_data ("stencil")))
+ return;
+
Item *stem = dynamic_cast<Item *> (info.grob ());
if (Stem::get_beam (stem))
return;
-
-
- Music *m = info.ultimate_music_cause ();
- if (!m->is_mus_type ("rhythmic-event"))
+ Stream_event *ev = info.ultimate_event_cause ();
+ if (!ev->in_event_class ("rhythmic-event"))
{
- String s = _ ("stem must have Rhythmic structure");
- if (info.music_cause ())
- info.music_cause ()->origin ()->warning (s);
- else
- ::warning (s);
-
+ info.grob ()->warning (_ ("stem must have Rhythmic structure"));
return;
}
last_stem_added_at_ = now;
- int durlog = unsmob_duration (m->get_property ("duration"))->duration_log ();
+
+ Duration *stem_duration = unsmob<Duration> (ev->get_property ("duration"));
+ int durlog = stem_duration->duration_log ();
+ //int durlog = unsmob<Duration> (ev->get_property ("duration"))->duration_log ();
if (durlog <= 2)
{
- m->origin ()->warning (_ ("stem doesn't fit in beam"));
+ ev->origin ()->warning (_ ("stem does not fit in beam"));
prev_start_ev_->origin ()->warning (_ ("beam was started here"));
/*
- don't return, since
+ don't return, since
- [r4 c8] can just as well be modern notation.
+ [r4 c8] can just as well be modern notation.
*/
}
- stem->set_property ("duration-log",
- scm_from_int (durlog));
+ if (forced_direction_)
+ set_grob_direction (stem, forced_direction_);
+
+ 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));
+ max (durlog - 2, 0),
+ Stem::is_invisible (stem),
+ stem_duration->factor (),
+ (to_boolean (stem->get_property ("tuplet-start"))));
Beam::add_stem (beam_, stem);
}
-ADD_ACKNOWLEDGER (Beam_engraver, stem);
-ADD_ACKNOWLEDGER (Beam_engraver, rest);
+
+void
+Beam_engraver::boot ()
+{
+ ADD_LISTENER (Beam_engraver, beam);
+ ADD_ACKNOWLEDGER (Beam_engraver, stem);
+ ADD_ACKNOWLEDGER (Beam_engraver, rest);
+}
ADD_TRANSLATOR (Beam_engraver,
- /* doc */ "Handles Beam events by engraving Beams. If omitted, then notes will be "
- "printed with flags instead of beams.",
- /* create */ "Beam",
- /* accept */ "beam-event",
- /* read */ "beamMelismaBusy beatLength subdivideBeams",
- /* write */ "");
+ /* doc */
+ "Handle @code{Beam} events by engraving beams. If omitted,"
+ " then notes are printed with flags instead of beams.",
+
+ /* create */
+ "Beam ",
+
+ /* read */
+ "baseMoment "
+ "beamMelismaBusy "
+ "beatStructure "
+ "subdivideBeams ",
+
+ /* write */
+ "forbidBreak"
+ );
class Grace_beam_engraver : public Beam_engraver
{
public:
TRANSLATOR_DECLARATIONS (Grace_beam_engraver);
+ TRANSLATOR_INHERIT (Beam_engraver);
protected:
virtual bool valid_start_point ();
virtual bool valid_end_point ();
};
-Grace_beam_engraver::Grace_beam_engraver ()
+Grace_beam_engraver::Grace_beam_engraver (Context *c)
+ : Beam_engraver (c)
{
}
return beam_ && valid_start_point ();
}
-ADD_ACKNOWLEDGER (Grace_beam_engraver, stem);
-ADD_ACKNOWLEDGER (Grace_beam_engraver, rest);
+void
+Grace_beam_engraver::boot ()
+{
+ ADD_LISTENER (Grace_beam_engraver, beam);
+ ADD_ACKNOWLEDGER (Grace_beam_engraver, stem);
+ ADD_ACKNOWLEDGER (Grace_beam_engraver, rest);
+}
+
ADD_TRANSLATOR (Grace_beam_engraver,
- /* doc */ "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. ",
- /* create */ "Beam",
- /* accept */ "beam-event",
- /* read */ "beamMelismaBusy beatLength allowBeamBreak subdivideBeams",
- /* write */ "");
+ /* 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 */
+ "baseMoment "
+ "beamMelismaBusy "
+ "beatStructure "
+ "subdivideBeams ",
+
+ /* write */
+ ""
+ );
projects / lilypond.git / blobdiff