-/*
+/*
auto-beam-engraver.cc -- implement Auto_beam_engraver
-
+
source file of the GNU LilyPond music typesetter
-
+
(c) 1999--2005 Jan Nieuwenhuizen <janneke@gnu.org>
-
- */
+*/
#include "engraver.hh"
#include "beaming.hh"
virtual void stop_translation_timestep ();
virtual void start_translation_timestep ();
virtual void process_music ();
- virtual bool try_music (Music*);
+ virtual bool try_music (Music *);
virtual void finalize ();
virtual void acknowledge_grob (Grob_info);
virtual void process_acknowledged_grobs ();
bool test_moment (Direction, Moment);
void consider_begin (Moment);
void consider_end (Moment);
- Spanner* create_beam ();
+ Spanner *create_beam ();
void begin_beam ();
void end_beam ();
void junk_beam ();
- bool is_same_grace_state (Grob* e);
+ bool is_same_grace_state (Grob *e);
void typeset_beam ();
Music *forbid_;
/*
shortest_mom is the shortest note in the beam.
- */
+ */
Moment shortest_mom_;
Spanner *finished_beam_;
Link_array<Item>* stems_;
-
int count_;
Moment last_add_mom_;
/*
Projected ending of the beam we're working on.
- */
+ */
Moment extend_mom_;
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_info_list*finished_grouping_;
+ Beaming_info_list *grouping_;
+ SCM beam_settings_; // ugh. should protect ?
+
+ Beaming_info_list *finished_grouping_;
};
void
}
}
-
Auto_beam_engraver::Auto_beam_engraver ()
{
forbid_ = 0;
finished_beam_ = 0;
finished_grouping_ = 0;
grouping_ = 0;
- beam_settings_ = SCM_EOL;
+ beam_settings_ = SCM_EOL;
}
-
bool
-Auto_beam_engraver::try_music (Music*m)
+Auto_beam_engraver::try_music (Music *m)
{
- if (m->is_mus_type ("beam-forbid-event"))
+ if (m->is_mus_type ("beam-forbid-event"))
{
forbid_ = m;
return true;
/*
Determine end moment for auto beaming (or begin moment, but mostly
0== anywhere) In order of increasing priority:
-
+
i. begin anywhere, end at every beat
ii. end * <num> <den>
iii. end <type> <num> <den>
-
+
iv. end * * *
v. end <type> * *
-
-
+
+
Rationale:
-
+
[to be defined in config file]
i. easy catch-all rule
ii. exceptions for time signature
iii. exceptions for time signature, for specific duration type
-
+
[user override]
iv. generic override
v. override for specific duration type
-
*/
bool
Auto_beam_engraver::test_moment (Direction dir, Moment test_mom)
{
return false;
}
-
+
SCM wild = scm_list_n (ly_symbol2scm ("*"), ly_symbol2scm ("*"), SCM_UNDEFINED);
SCM function;
if (dir == START)
function = scm_list_n (ly_symbol2scm ("begin"), SCM_UNDEFINED);
else
function = scm_list_n (ly_symbol2scm ("end"), SCM_UNDEFINED);
-
+
Moment beat_length (1, 4);
- if (Moment * m = unsmob_moment (get_property ("beatLength")))
+ if (Moment *m = unsmob_moment (get_property ("beatLength")))
{
beat_length = *m;
}
Moment measure_length (1, 1);
int num = 4;
- if (Moment* m = unsmob_moment (get_property ("measureLength")))
+ if (Moment *m = unsmob_moment (get_property ("measureLength")))
{
num = int ((*m / beat_length).main_part_);
}
-
+
int den = beat_length.den ();
SCM time = scm_list_n (scm_int2num (num), scm_int2num (den), SCM_UNDEFINED);
SCM type = scm_list_n (scm_int2num (test_mom.num ()),
- scm_int2num (test_mom.den ()), SCM_UNDEFINED);
+ scm_int2num (test_mom.den ()), SCM_UNDEFINED);
/*
UGH UGH.
settings aren't grob-properties.
- */
+ */
SCM settings = get_property ("autoBeamSettings");
-
+
/* first guess */
-
+
/* begin beam at any position
- (and fallback for end) */
+ (and fallback for end) */
Moment moment (0);
-
+
/* end beam at end of beat */
if (dir == STOP)
{
/* second guess: property generic time exception */
SCM m = scm_assoc (ly_append3 (function, wild, time), settings);
-
+
if (m != SCM_BOOL_F && unsmob_moment (scm_cdr (m)))
- moment = * unsmob_moment (scm_cdr (m));
+ moment = *unsmob_moment (scm_cdr (m));
/* third guess: property time exception, specific for duration type */
m = scm_assoc (ly_append3 (function, type, time), settings);
if (m != SCM_BOOL_F && unsmob_moment (scm_cdr (m)))
- moment = * unsmob_moment (scm_cdr (m));
+ moment = *unsmob_moment (scm_cdr (m));
/* fourth guess [user override]: property plain generic */
m = scm_assoc (ly_append3 (function, wild, wild), settings);
if (m != SCM_BOOL_F && unsmob_moment (scm_cdr (m)))
- moment = * unsmob_moment (scm_cdr (m));
+ moment = *unsmob_moment (scm_cdr (m));
/* fifth guess [user override]: property plain, specific for duration type */
m = scm_assoc (ly_append3 (function, type, wild), settings);
if (m != SCM_BOOL_F && unsmob_moment (scm_cdr (m)))
- moment = * unsmob_moment (scm_cdr (m));
-
+ moment = *unsmob_moment (scm_cdr (m));
+
Rational r;
if (moment.to_bool ())
{
/* Ugh? measurePosition can be negative, when \partial
We may have to fix this elsewhere (timing translator)
- r = unsmob_moment (get_property ("measurePosition"))->mod_rat (moment);
+ r = unsmob_moment (get_property ("measurePosition"))->mod_rat (moment);
*/
Moment pos (0);
- if (Moment *m = unsmob_moment (get_property ("measurePosition")))
+ if (Moment *m = unsmob_moment (get_property ("measurePosition")))
{
pos = *m;
}
-
+
if (pos < Moment (0))
{
- Moment length(1);
+ Moment length (1);
- if ( Moment *m = unsmob_moment (get_property ("measureLength")))
+ if (Moment *m = unsmob_moment (get_property ("measureLength")))
{
length = *m;
}
{
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 ());
}
Beam::add_stem (beam, (*stems_)[i]);
}
-
+
announce_grob (beam, (*stems_)[0]->self_scm ());
return beam;
void
Auto_beam_engraver::begin_beam ()
{
- if (stems_ || grouping_ )
+ if (stems_ || grouping_)
{
programming_error ("already have autobeam");
- return;
+ return;
}
-
+
stems_ = new Link_array<Item>;
grouping_ = new Beaming_info_list;
beam_settings_ = updated_grob_properties (context (), ly_symbol2scm ("Beam"));
-
+
beam_start_moment_ = now_mom ();
- beam_start_location_ =
- robust_scm2moment (get_property ("measurePosition"), Moment(0));
+ 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));
+ beat_length_ = robust_scm2moment (get_property ("beatLength"), Moment (1, 4));
}
void
-Auto_beam_engraver::junk_beam ()
+Auto_beam_engraver::junk_beam ()
{
if (!stems_)
- return ;
-
+ return;
+
delete stems_;
stems_ = 0;
delete grouping_;
grouping_ = 0;
beam_settings_ = SCM_EOL;
-
+
shortest_mom_ = Moment (Rational (1, 8));
}
finished_grouping_->beamify (beat_length_, subdivide_beams_);
Beam::set_beaming (finished_beam_, finished_grouping_);
finished_beam_ = 0;
-
+
delete finished_grouping_;
finished_grouping_ = 0;
}
count_ = 0;
/*
don't beam over skips
- */
+ */
if (stems_)
{
Moment now = now_mom ();
junk_beam ();
}
-
void
Auto_beam_engraver::acknowledge_grob (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())
+ && beam_start_moment_ < now_mom ())
{
consider_end (shortest_mom_);
junk_beam ();
}
-
+
if (stems_)
{
if (Beam::has_interface (info.grob_))
end_beam ();
}
}
-
+
if (Stem::has_interface (info.grob_))
{
- Item* stem = dynamic_cast<Item *> (info.grob_);
- Music* m = info.music_cause ();
+ 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_)
{
if (stems_)
junk_beam ();
- return ;
+ return;
}
-
- int durlog = unsmob_duration (m->get_property ("duration"))->duration_log ();
-
+
+ int durlog = unsmob_duration (m->get_property ("duration"))->duration_log ();
+
if (durlog <= 2)
{
if (stems_)
return;
}
-
/*
ignore grace notes.
- */
+ */
if (bool (beam_start_location_.grace_part_) != bool (now_mom ().grace_part_))
- return ;
-
-
+ return;
+
Moment dur = unsmob_duration (m->get_property ("duration"))->get_length ();
/* FIXME:
- This comment has been here since long:
+ This comment has been here since long:
- if shortest duration would change
- consider ending and beginning beam first.
+ if shortest duration would change
+ consider ending and beginning beam first.
- but the code didn't match: */
+ but the code didn't match: */
#if 1
consider_end (dur);
consider_begin (dur);
if (!stems_)
return;
-
+
Moment now = now_mom ();
-
+
grouping_->add_stem (now - beam_start_moment_ + beam_start_location_,
- durlog - 2);
+ durlog - 2);
stems_->push (stem);
last_add_mom_ = now;
extend_mom_ = (extend_mom_ >? now) + m->get_length ();
{
junk_beam ();
}
- }
+ }
}
-
- count_ ++;
+
+ count_++;
}
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 */ "");
+ /* 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 */ "");
projects / lilypond.git / blobdiff