/*
This file is part of LilyPond, the GNU music typesetter.
- Copyright (C) 1997--2011 Han-Wen Nienhuys <hanwen@xs4all.nl>
+ Copyright (C) 1997--2012 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
#include "warn.hh"
#include "translator-group.hh"
#include "global-context.hh"
+#include "moment.hh"
void
Timing_translator::stop_translation_timestep ()
Moment now = now_mom ();
if (barleft > Moment (0))
- {
- Moment nextmom = now + barleft;
- nextmom.grace_part_ = Rational (0);
- global->add_moment_to_process (nextmom);
- }
+ {
+ Moment nextmom = now + barleft;
+ nextmom.grace_part_ = Rational (0);
+ global->add_moment_to_process (nextmom);
+ }
}
}
void
Timing_translator::initialize ()
{
- context ()->add_alias (ly_symbol2scm ("Timing"));
- context ()->set_property ("currentBarNumber", scm_from_int (1));
- context ()->set_property ("internalBarNumber", scm_from_int (1));
+ 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);
+
+ SCM timeSignatureFraction = timing->get_property ("timeSignatureFraction");
+
+ if (!scm_is_pair (timeSignatureFraction))
+ {
+ programming_error ("missing timeSignatureFraction");
+ timeSignatureFraction = scm_cons (scm_from_int (4), scm_from_int (4));
+ }
+ context ()->set_property ("timeSignatureFraction", timeSignatureFraction);
+
+ SCM measureLength = timing->get_property ("measureLength");
+
+ if (!unsmob_moment (measureLength))
+ {
+ measureLength =
+ Moment (ly_scm2rational
+ (scm_divide (scm_car (timeSignatureFraction),
+ scm_cdr (timeSignatureFraction)))).smobbed_copy ();
+ }
+ context ()->set_property ("measureLength", measureLength);
- context ()->set_property ("timeSignatureFraction",
- scm_cons (scm_from_int (4), scm_from_int (4)));
/*
Do not init measurePosition; this should be done from global
context.
*/
- context ()->set_property ("measureLength",
- Moment (Rational (1)).smobbed_copy ());
- context ()->set_property ("baseMoment",
- Moment (Rational (1, 4)).smobbed_copy ());
+
+ SCM timeSignatureSettings = timing->get_property ("timeSignatureSettings");
+ if (!scm_is_pair (timeSignatureSettings))
+ {
+ programming_error ("missing timeSignatureSettings");
+ // A memoized constant is not the prettiest thing as a fallback
+ // since it does not track changes of the variable. However,
+ // this is still better than nothing, and we already complained
+ // via a programming_error
+ timeSignatureSettings = ly_lily_module_constant ("default-time-signature-settings");
+ }
+ context ()->set_property ("timeSignatureSettings", timeSignatureSettings);
+
+ SCM beamExceptions = timing->get_property ("beamExceptions");
+ if (!scm_is_pair (beamExceptions))
+ {
+ beamExceptions =
+ scm_call_2 (ly_lily_module_constant ("beam-exceptions"),
+ timeSignatureFraction,
+ timeSignatureSettings);
+ }
+ context ()->set_property ("beamExceptions", beamExceptions);
+
+ SCM baseMoment = timing->get_property ("baseMoment");
+ if (!unsmob_moment (baseMoment))
+ {
+ baseMoment =
+ Moment (ly_scm2rational
+ (scm_call_2 (ly_lily_module_constant ("base-length"),
+ timeSignatureFraction,
+ timeSignatureSettings))).smobbed_copy ();
+ }
+ context ()->set_property ("baseMoment", baseMoment);
+
+ SCM beatStructure = timing->get_property ("beatStructure");
+ if (!scm_is_pair (beatStructure))
+ {
+ beatStructure =
+ scm_call_3 (ly_lily_module_constant ("beat-structure"),
+ ly_rational2scm (unsmob_moment (baseMoment)->main_part_),
+ timeSignatureFraction,
+ timeSignatureSettings);
+ }
+ context ()->set_property ("beatStructure", beatStructure);
+
+ context ()->set_property ("beamHalfMeasure",
+ timing->get_property ("beamHalfMeasure"));
+
+ context ()->set_property ("autoBeaming",
+ timing->get_property ("autoBeaming"));
}
Rational
{
measposp = now;
context ()->set_property ("measurePosition",
- measposp.smobbed_copy ());
+ measposp.smobbed_copy ());
}
measposp += dt;
while (c && measposp.main_part_ >= len)
{
measposp.main_part_ -= len;
- current_barnumber ++;
- internal_barnumber ++;
+ current_barnumber++;
+ internal_barnumber++;
}
context ()->set_property ("currentBarNumber", scm_from_int (current_barnumber));
#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 */
- "internalBarNumber "
- "currentBarNumber "
- "measureLength "
- "measurePosition ",
-
- /* write */
- "baseMoment "
- "currentBarNumber "
- "internalBarNumber "
- "measureLength "
- "measurePosition "
- "timeSignatureFraction "
- );
+ /* 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