/*
- auto-beam-engraver.cc -- implement Auto_beam_engraver
+ This file is part of LilyPond, the GNU music typesetter.
- source file of the GNU LilyPond music typesetter
+ Copyright (C) 1999--2011 Jan Nieuwenhuizen <janneke@gnu.org>
- (c) 1999--2009 Jan Nieuwenhuizen <janneke@gnu.org>
+ 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 "bar-line.hh"
DECLARE_ACKNOWLEDGER (rest);
DECLARE_ACKNOWLEDGER (beam);
DECLARE_ACKNOWLEDGER (bar_line);
+ DECLARE_ACKNOWLEDGER (breathing_sign);
DECLARE_ACKNOWLEDGER (stem);
DECLARE_TRANSLATOR_LISTENER (beam_forbid);
void process_acknowledged ();
private:
- bool test_moment (Direction, Moment);
- void consider_begin (Moment);
- void consider_end (Moment);
+ bool test_moment (Direction, Moment, Moment);
+ void consider_begin (Moment, Moment);
+ void consider_end (Moment, Moment);
Spanner *create_beam ();
void begin_beam ();
void end_beam ();
void junk_beam ();
bool is_same_grace_state (Grob *e);
+ void recheck_beam ();
void typeset_beam ();
+ vector<Item *> *remove_end_stems (vsize);
Stream_event *forbid_;
/*
- shortest_mom is the shortest note in the beam.
+ shortest_mom_ is the shortest note in the beam.
*/
Moment shortest_mom_;
Spanner *finished_beam_;
- vector<Item*> *stems_;
+ vector<Item *> *stems_;
int process_acknowledged_count_;
Moment last_add_mom_;
Moment extend_mom_;
Moment beam_start_moment_;
Moment beam_start_location_;
+ Context *beam_start_context_;
// We act as if beam were created, and start a grouping anyway.
Beaming_pattern *grouping_;
Beaming_options beaming_options_;
Beaming_options finished_beaming_options_;
-
-
+
+
void check_bar_property ();
};
if (scm_is_string (get_property ("whichBar"))
&& beam_start_moment_ < now)
{
- consider_end (shortest_mom_);
+ consider_end (measure_position (context ()), shortest_mom_);
junk_beam ();
}
}
void
Auto_beam_engraver::process_music ()
{
+ Moment now = now_mom ();
/*
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_);
+ consider_end (measure_position (context ()), shortest_mom_);
junk_beam ();
}
if (forbid_)
{
- consider_end (shortest_mom_);
- junk_beam ();
+ if (stems_)
+ end_beam ();
+ else
+ junk_beam ();
}
}
forbid_ = 0;
process_acknowledged_count_ = 0;
stems_ = 0;
- shortest_mom_ = Moment (Rational (1, 8));
+ shortest_mom_ = Moment (Rational (1, 4));
finished_beam_ = 0;
finished_grouping_ = 0;
grouping_ = 0;
}
bool
-Auto_beam_engraver::test_moment (Direction dir, Moment test)
+Auto_beam_engraver::test_moment (Direction dir, Moment test_mom, Moment dur)
{
- return scm_call_3 (get_property ("autoBeamCheck"),
+ return scm_call_4 (get_property ("autoBeamCheck"),
context ()->self_scm (),
scm_from_int (dir),
- test.smobbed_copy ())
+ test_mom.smobbed_copy (),
+ dur.smobbed_copy ())
!= SCM_BOOL_F;
}
void
-Auto_beam_engraver::consider_begin (Moment test_mom)
+Auto_beam_engraver::consider_begin (Moment test_mom, Moment dur)
{
bool on = to_boolean (get_property ("autoBeaming"));
if (!stems_ && on
&& !forbid_)
{
- bool b = test_moment (START, test_mom);
+ bool b = test_moment (START, test_mom, dur);
if (b)
begin_beam ();
}
}
void
-Auto_beam_engraver::consider_end (Moment test_mom)
+Auto_beam_engraver::consider_end (Moment test_mom, Moment dur)
{
if (stems_)
{
/* Allow already started autobeam to end:
don't check for autoBeaming */
- bool b = test_moment (STOP, test_mom);
+ bool b = test_moment (STOP, test_mom, dur);
if (b)
end_beam ();
}
return 0;
/*
- Can't use make_spanner_from_properties () because we have to use
+ Can't use make_spanner () 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 ());
+ Grob_info i = make_grob_info (beam, (*stems_)[0]->self_scm ());
+ i.rerouting_daddy_context_ = beam_start_context_;
+ announce_grob (i);
return beam;
}
return;
}
- stems_ = new vector<Item*>;
+ stems_ = new vector<Item *>;
grouping_ = new Beaming_pattern ();
beaming_options_.from_context (context ());
beam_settings_ = updated_grob_properties (context (), ly_symbol2scm ("Beam"));
+ beam_start_context_ = context ()->get_parent_context ();
beam_start_moment_ = now_mom ();
beam_start_location_
= robust_scm2moment (get_property ("measurePosition"), Moment (0));
grouping_ = 0;
beam_settings_ = SCM_EOL;
- shortest_mom_ = Moment (Rational (1, 8));
+ shortest_mom_ = Moment (Rational (1, 4));
}
void
else
{
finished_beam_ = create_beam ();
-
+
if (finished_beam_)
{
- announce_end_grob (finished_beam_, SCM_EOL);
+ Grob_info i = make_grob_info (finished_beam_, SCM_EOL);
+ i.rerouting_daddy_context_ = beam_start_context_;
+
+ announce_end_grob (i);
finished_grouping_ = grouping_;
finished_beaming_options_ = beaming_options_;
}
beam_settings_ = SCM_EOL;
}
- shortest_mom_ = Moment (Rational (1, 8));
+ shortest_mom_ = Moment (Rational (1, 4));
}
void
{
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;
end_beam ();
}
+void
+Auto_beam_engraver::acknowledge_breathing_sign (Grob_info /* info */)
+{
+ check_bar_property ();
+ if (stems_)
+ end_beam ();
+}
+
void
Auto_beam_engraver::acknowledge_rest (Grob_info /* info */)
{
return;
Moment dur = unsmob_duration (ev->get_property ("duration"))->get_length ();
-
- consider_end (dur);
- consider_begin (dur);
+ Moment measure_now = measure_position (context ());
+ bool recheck_needed = false;
if (dur < shortest_mom_)
+ {
+ /* new shortest moment, so store it and set recheck_needed */
shortest_mom_ = dur;
+ recheck_needed = true;
+ }
+
+ /* end should be based on shortest_mom_, begin should be
+ based on current duration */
+ consider_end (measure_now, shortest_mom_);
+ consider_begin (measure_now, dur);
if (!stems_)
return;
stems_->push_back (stem);
last_add_mom_ = now;
extend_mom_ = max (extend_mom_, now) + get_event_length (ev, now);
+ if (recheck_needed)
+ recheck_beam ();
+}
+
+void
+Auto_beam_engraver::recheck_beam ()
+{
+ /*
+ Recheck the beam after the shortest duration has changed
+ If shorter duration has created a new break, typeset the
+ first part of the beam and reset the current beam to just
+ the last part of the beam
+ */
+ Beaming_pattern *new_grouping_ = 0;
+ vector<Item *> *new_stems_ = 0;
+ Moment temporary_shortest_mom;
+ SCM temporary_beam_settings;
+
+ bool found_end;
+
+
+ for (vsize i = 0; i < stems_->size () - 1;)
+ {
+ found_end = test_moment (STOP,
+ grouping_->end_moment (i),
+ shortest_mom_);
+ if (!found_end)
+ i++;
+ else
+ {
+ /*
+ Save the current beam settings and shortest_mom_
+ Necessary because end_beam destroys them
+ */
+ temporary_shortest_mom = shortest_mom_;
+ temporary_beam_settings = beam_settings_;
+
+ /* Eliminate (and save) the items no longer part of the first beam */
+
+ new_grouping_ = grouping_->split_pattern (i);
+ new_stems_ = remove_end_stems (i);
+
+ end_beam ();
+ typeset_beam ();
+
+ /* now recreate the unbeamed data structures */
+ stems_ = new_stems_;
+ grouping_ = new_grouping_;
+ shortest_mom_ = temporary_shortest_mom;
+ beam_settings_ = temporary_beam_settings;
+
+ i = 0;
+ }
+
+ }
+
+}
+
+/*
+ Remove all stems with an index greater than split_index
+ from stems_, and return a vector containing all of the
+ removed stems
+*/
+vector <Item *> *
+Auto_beam_engraver::remove_end_stems (vsize split_index)
+{
+ vector <Item *> *removed_stems = 0;
+ removed_stems = new vector <Item *>;
+
+ for (vsize j = split_index + 1; j < stems_->size (); j++)
+ removed_stems->push_back ((*stems_).at (j));
+ for (vsize j = split_index + 1; j < stems_->size ();)
+ stems_->pop_back ();
+ return removed_stems;
}
void
Auto_beam_engraver::process_acknowledged ()
{
- if (extend_mom_ > now_mom ())
+ Moment now = now_mom();
+ if (extend_mom_ > now)
return;
if (!process_acknowledged_count_)
{
- consider_end (shortest_mom_);
- consider_begin (shortest_mom_);
+ Moment measure_now = measure_position (context ());
+ consider_end (measure_now, shortest_mom_);
}
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 ();
ADD_ACKNOWLEDGER (Auto_beam_engraver, stem);
ADD_ACKNOWLEDGER (Auto_beam_engraver, bar_line);
ADD_ACKNOWLEDGER (Auto_beam_engraver, beam);
+ADD_ACKNOWLEDGER (Auto_beam_engraver, breathing_sign);
ADD_ACKNOWLEDGER (Auto_beam_engraver, rest);
ADD_TRANSLATOR (Auto_beam_engraver,
- /* 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 */
- ""
- );
+ /* doc */
+ "Generate beams based on measure characteristics and observed"
+ " Stems. Uses @code{baseMoment}, @code{beatStructure},"
+ " @code{beamExceptions}, @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 "
+ "baseMoment "
+ "beamExceptions "
+ "beatStructure "
+ "subdivideBeams ",
+
+ /* write */
+ ""
+ );
projects / lilypond.git / blobdiff