/*
- stem-grav.cc -- implement Stem_engraver
+ stem-engraver.cc -- implement Stem_engraver
source file of the GNU LilyPond music typesetter
- (c) 1997--2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1997--2005 Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
#include "context.hh"
#include "directional-element-interface.hh"
#include "engraver.hh"
-#include "event.hh"
#include "item.hh"
#include "misc.hh"
#include "rhythmic-head.hh"
#include "stem-tremolo.hh"
#include "stem.hh"
-
/**
- Make stems upon receiving noteheads.
- */
+ Make stems upon receiving noteheads.
+*/
class Stem_engraver : public Engraver
{
- Grob *stem_;
+ Grob *stem_;
Grob *tremolo_;
Music *rhythmic_ev_;
- Music* tremolo_ev_;
+ Music *tremolo_ev_;
+
TRANSLATOR_DECLARATIONS (Stem_engraver);
protected:
void make_stem (Grob_info);
+
virtual void acknowledge_grob (Grob_info);
virtual void stop_translation_timestep ();
virtual bool try_music (Music *);
tremolo_ev_ = 0;
stem_ = 0;
tremolo_ = 0;
- rhythmic_ev_ =0;
+ rhythmic_ev_ = 0;
}
void
stem needs a rhythmic structure to fit it into a beam. */
stem_ = make_item ("Stem", gi.music_cause ()->self_scm ());
+ /*
+ docme: why do we take duration-log from request, not from note
+ head?
+ */
int duration_log = gi.music_cause ()->duration_log ();
stem_->set_property ("duration-log", scm_int2num (duration_log));
the first and last (quarter) note bothe get one tremolo flag. */
int requested_type
- = ly_scm2int (tremolo_ev_->get_property ("tremolo-type"));
+ = scm_to_int (tremolo_ev_->get_property ("tremolo-type"));
SCM f = get_property ("tremoloFlags");
if (!requested_type)
{
- if (ly_c_number_p (f))
- requested_type = ly_scm2int (f);
+ if (scm_is_number (f))
+ requested_type = scm_to_int (f);
else
requested_type = 8;
}
- (duration_log > 2 ? duration_log - 2 : 0);
if (tremolo_flags <= 0)
{
- tremolo_ev_->origin ()->warning (_("tremolo duration is too long"));
+ tremolo_ev_->origin ()->warning (_ ("tremolo duration is too long"));
tremolo_flags = 0;
}
tremolo_ = make_item ("StemTremolo", tremolo_ev_->self_scm ());
/* The number of tremolo flags is the number of flags of the
- tremolo-type minus the number of flags of the note itself. */
+ tremolo-type minus the number of flags of the note itself. */
tremolo_->set_property ("flag-count", scm_int2num (tremolo_flags));
tremolo_->set_parent (stem_, X_AXIS);
stem_->set_property ("tremolo-flag", tremolo_->self_scm ());
if (Rhythmic_head::get_stem (gi.grob_))
return;
- Music * cause = gi.music_cause ();
+ Music *cause = gi.music_cause ();
if (!cause)
- return ;
-
+ return;
+
if (!stem_)
make_stem (gi);
-
+
int duration_log = cause->duration_log ();
if (Stem::duration_log (stem_) != duration_log)
{
// FIXME:
- gi.music_cause ()->origin ()->warning (_f ("Adding note head to incompatible stem (type = %d)", 1 << Stem::duration_log (stem_)));
-
- gi.music_cause ()->origin ()->warning (_f ("Don't you want polyphonic voices instead?"));
+ gi.music_cause ()->origin ()->warning (_f ("adding note head to incompatible stem (type = %d)", 1 << Stem::duration_log (stem_)));
+ gi.music_cause ()->origin ()->warning (_f ("maybe input should specify polyphonic voices"));
}
Stem::add_head (stem_, gi.grob_);
{
/* FIXME: junk these properties. */
SCM prop = get_property ("stemLeftBeamCount");
- if (ly_c_number_p (prop))
+ if (scm_is_number (prop))
{
- Stem::set_beaming (stem_,ly_scm2int (prop),LEFT);
+ Stem::set_beaming (stem_, scm_to_int (prop), LEFT);
context ()->unset_property (ly_symbol2scm ("stemLeftBeamCount"));
}
prop = get_property ("stemRightBeamCount");
- if (ly_c_number_p (prop))
+ if (scm_is_number (prop))
{
- Stem::set_beaming (stem_,ly_scm2int (prop), RIGHT);
+ Stem::set_beaming (stem_, scm_to_int (prop), RIGHT);
context ()->unset_property (ly_symbol2scm ("stemRightBeamCount"));
}
stem_ = 0;
return false;
}
-ENTER_DESCRIPTION (Stem_engraver,
-/* descr */ "Create stems and single-stem tremolos. It also works together with "
-"the beam engraver for overriding beaming.",
-/* creats*/ "Stem StemTremolo",
-/* accepts */ "tremolo-event",
-/* acks */ "rhythmic-head-interface",
-/* reads */ "tremoloFlags stemLeftBeamCount stemRightBeamCount",
-/* write */ "");
+ADD_TRANSLATOR (Stem_engraver,
+ /* descr */ "Create stems and single-stem tremolos. It also works together with "
+ "the beam engraver for overriding beaming.",
+ /* creats*/ "Stem StemTremolo",
+ /* accepts */ "tremolo-event",
+ /* acks */ "rhythmic-head-interface",
+ /* reads */ "tremoloFlags stemLeftBeamCount stemRightBeamCount",
+ /* write */ "");