source file of the GNU LilyPond music typesetter
- (c) 1998--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
+ (c) 1998--2007 Han-Wen Nienhuys <hanwen@xs4all.nl>
*/
#include "beam.hh"
public:
DECLARE_ACKNOWLEDGER (stem);
DECLARE_ACKNOWLEDGER (rest);
+
protected:
Stream_event *start_ev_;
Spanner *beam_;
Stream_event *prev_start_ev_;
- Stream_event *now_stop_ev_;
+ Stream_event *stop_ev_;
Beaming_pattern *beam_info_;
Beaming_pattern *finished_beam_info_;
/// 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);
finished_beam_ = 0;
finished_beam_info_ = 0;
beam_info_ = 0;
- now_stop_ev_ = 0;
+ stop_ev_ = 0;
start_ev_ = 0;
prev_start_ev_ = 0;
}
Direction d = to_dir (ev->get_property ("span-direction"));
if (d == START && valid_start_point ())
- start_ev_ = ev;
+ ASSIGN_EVENT_ONCE (start_ev_, ev);
else if (d == STOP && valid_end_point ())
- now_stop_ev_ = ev;
+ ASSIGN_EVENT_ONCE (stop_ev_, ev);
}
void
void
Beam_engraver::process_music ()
{
- if (beam_ && !to_boolean (get_property ("allowBeamBreak")))
- context ()->get_score_context ()->set_property ("forbidBreak", SCM_BOOL_T);
-
if (start_ev_)
{
if (beam_)
beam_start_location_ = mp;
beam_start_mom_ = now_mom ();
+ 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_->get_bound (RIGHT))
finished_beam_->set_bound (RIGHT, finished_beam_->get_bound (LEFT));
-
- finished_beam_info_->beamify (context ());
+
+ finished_beam_info_->beamify (finished_beaming_options_);
Beam::set_beaming (finished_beam_, finished_beam_info_);
delete finished_beam_info_;
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 ();
void
Beam_engraver::acknowledge_rest (Grob_info info)
{
- if (beam_)
+ if (beam_
+ && !scm_is_number (info.grob ()->get_property_data ("staff-position")))
{
chain_offset_callback (info.grob(),
Beam::rest_collision_callback_proc, Y_AXIS);
int durlog = unsmob_duration (ev->get_property ("duration"))->duration_log ();
if (durlog <= 2)
{
- ev->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
"printed with flags instead of beams.",
/* create */ "Beam",
- /* accept */ "beam-event",
/* read */
"beamMelismaBusy "
public:
TRANSLATOR_DECLARATIONS (Grace_beam_engraver);
+ DECLARE_TRANSLATOR_LISTENER (beam);
+
protected:
virtual bool valid_start_point ();
virtual bool 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);
" are at grace points in time. ",
/* create */ "Beam",
- /* accept */ "beam-event",
/* read */
"beamMelismaBusy "
"beatLength "
- "allowBeamBreak "
"subdivideBeams "
,
/* write */ "");