/*
- timing-translator.cc -- implement Timing_translator
+ This file is part of LilyPond, the GNU music typesetter.
+ Copyright (C) 1997--2012 Han-Wen Nienhuys <hanwen@xs4all.nl>
- source file of the GNU LilyPond music typesetter
+ 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.
- (c) 1997--2001 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ 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 "debug.hh"
#include "timing-translator.hh"
-#include "command-request.hh"
-#include "translator-group.hh"
-#include "global-translator.hh"
-#include "multi-measure-rest.hh"
-/*
- TODO: change the rest of lily, so communication with
- Timing_translator is only done through properties. This means the
- class declaration can go here. */
-bool
-Timing_translator::try_music (Music*r)
-{
- if (dynamic_cast<Barcheck_req*> (r))
- {
- check_ = r;
- return true;
- }
- return false;
-}
-
-void
-Timing_translator::process_music ()
-{
- if (check_ && measure_position ().main_part_)
- {
- check_->origin ()->warning (_f ("barcheck failed at: %s",
- measure_position ().str ()));
- Moment zero;
-
- if (!to_boolean (get_property ("barCheckNoSynchronize")))
- daddy_trans_l_->set_property ("measurePosition", zero.smobbed_copy ());
- }
-}
+#include "warn.hh"
+#include "translator-group.hh"
+#include "global-context.hh"
void
Timing_translator::stop_translation_timestep ()
{
- check_ = 0;
-
- Translator *t = this;
- Global_translator *global_l =0;
- do
- {
- t = t->daddy_trans_l_ ;
- global_l = dynamic_cast<Global_translator*> (t);
- }
- while (!global_l);
+ Global_context *global = get_global_context ();
- /* allbars == ! skipbars */
- SCM sb = get_property ("skipBars");
- bool allbars = !to_boolean (sb);
-
- // urg: multi bar rests: should always process whole of first bar?
- SCM tim = get_property ("timing");
- bool timb = to_boolean (tim);
- if (timb && allbars)
+ if (to_boolean (get_property ("timing"))
+ && !to_boolean (get_property ("skipBars")))
{
- Moment barleft = (measure_length () - measure_position ());
+ Moment barleft = (measure_length () - measure_position (context ()));
+ Moment now = now_mom ();
if (barleft > Moment (0))
- global_l->add_moment_to_process (now_mom () + barleft);
+ {
+ Moment nextmom = now + barleft;
+ nextmom.grace_part_ = Rational (0);
+ global->add_moment_to_process (nextmom);
+ }
}
}
-
-ADD_THIS_TRANSLATOR (Timing_translator);
-
void
Timing_translator::initialize ()
{
- Moment m;
- daddy_trans_l_->set_property ("timing" , SCM_BOOL_T);
- daddy_trans_l_->set_property ("currentBarNumber" , gh_int2scm (1));
- daddy_trans_l_->set_property ("measurePosition", m.smobbed_copy ());
- daddy_trans_l_->set_property ("timeSignatureFraction",
- gh_cons (gh_int2scm (4), gh_int2scm (4)));
-
- daddy_trans_l_->set_property ("measureLength", Moment (1).smobbed_copy ());
- daddy_trans_l_->set_property ("beatLength", Moment (1,4).smobbed_copy ());
+ Context *timing = unsmob_context (scm_call_2 (ly_lily_module_constant ("ly:context-find"),
+ context ()->self_scm (),
+ ly_symbol2scm ("Timing")));
+ if (timing != context ())
+ {
+ context ()->add_alias (ly_symbol2scm ("Timing"));
+
+ if (!timing)
+ {
+ programming_error ("Can't find Timing context template");
+ timing = context ();
+ }
+ }
+
+ SCM barnumber = timing->get_property ("currentBarNumber");
+ if (!scm_is_integer (barnumber))
+ barnumber = scm_from_int (1);
+ context ()->set_property ("currentBarNumber", barnumber);
+ context ()->set_property ("internalBarNumber", barnumber);
+
+ context ()->set_property ("timeSignatureFraction",
+ timing->get_property ("timeSignatureFraction"));
+ /*
+ Do not init measurePosition; this should be done from global
+ context.
+ */
+ context ()->set_property ("measureLength",
+ timing->get_property ("measureLength"));
+ context ()->set_property ("baseMoment",
+ timing->get_property ("baseMoment"));
}
Rational
Timing_translator::Timing_translator ()
{
-
-}
-
-Moment
-Timing_translator::measure_position () const
-{
- SCM sm = get_property ("measurePosition");
-
- Moment m =0;
- if (unsmob_moment (sm))
- {
- m = *unsmob_moment (sm);
- while (m.main_part_ < Rational (0))
- m.main_part_ += measure_length ();
- }
-
- return m;
}
void
Timing_translator::start_translation_timestep ()
{
- check_ = 0;
- Translator *t = this;
- Global_translator *global_l =0;
- do
- {
- t = t->daddy_trans_l_ ;
- global_l = dynamic_cast<Global_translator*> (t);
- }
- while (!global_l);
+ Global_context *global = get_global_context ();
- Moment dt = global_l->now_mom_ - global_l -> prev_mom_;
+ Moment now = global->now_mom ();
+ Moment dt = now - global->previous_moment ();
if (dt < Moment (0))
{
- programming_error ("Moving backwards in time");
+ programming_error ("moving backwards in time");
dt = 0;
}
-
- if (!dt)
+ else if (dt.main_part_.is_infinity ())
+ {
+ programming_error ("moving infinitely to future");
+ dt = 0;
+ }
+
+ if (!dt.to_bool ())
return;
Moment measposp;
SCM s = get_property ("measurePosition");
if (unsmob_moment (s))
- {
- measposp = *unsmob_moment (s);
- }
+ measposp = *unsmob_moment (s);
else
{
- daddy_trans_l_->set_property ("measurePosition", measposp.smobbed_copy ());
+ measposp = now;
+ context ()->set_property ("measurePosition",
+ measposp.smobbed_copy ());
}
-
+
measposp += dt;
-
- SCM barn = get_property ("currentBarNumber");
- int b = 0;
- if (gh_number_p (barn))
- {
- b = gh_scm2int (barn);
- }
+
+ int current_barnumber = robust_scm2int (get_property ("currentBarNumber"), 0);
+ int internal_barnumber = robust_scm2int (get_property ("internalBarNumber"), 0);
SCM cad = get_property ("timing");
- bool c= to_boolean (cad);
+ bool c = to_boolean (cad);
Rational len = measure_length ();
while (c && measposp.main_part_ >= len)
{
measposp.main_part_ -= len;
- b ++;
+ current_barnumber++;
+ internal_barnumber++;
}
- daddy_trans_l_->set_property ("currentBarNumber", gh_int2scm (b));
- daddy_trans_l_->set_property ("measurePosition", measposp.smobbed_copy ());
+ context ()->set_property ("currentBarNumber", scm_from_int (current_barnumber));
+ context ()->set_property ("internalBarNumber", scm_from_int (internal_barnumber));
+ context ()->set_property ("measurePosition", measposp.smobbed_copy ());
}
+#include "translator.icc"
+
+ADD_TRANSLATOR (Timing_translator,
+ /* doc */
+ "This engraver adds the alias @code{Timing} to its containing"
+ " context. Responsible for synchronizing timing information"
+ " from staves. Normally in @code{Score}. In order to create"
+ " polyrhythmic music, this engraver should be removed from"
+ " @code{Score} and placed in @code{Staff}.",
+
+ /* create */
+ "",
+
+ /* read */
+ "baseMoment "
+ "currentBarNumber "
+ "internalBarNumber "
+ "measureLength "
+ "measurePosition "
+ "timeSignatureFraction ",
+
+ /* write */
+ "baseMoment "
+ "currentBarNumber "
+ "internalBarNumber "
+ "measureLength "
+ "measurePosition "
+ "timeSignatureFraction "
+ );
projects / lilypond.git / blobdiff