source file of the GNU LilyPond music typesetter
- (c) 1997--2003 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1997--2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
-#include "staff-symbol-referencer.hh"
-#include "rhythmic-head.hh"
-#include "stem.hh"
-#include "event.hh"
+#include "context.hh"
+#include "directional-element-interface.hh"
+#include "engraver.hh"
+#include "item.hh"
#include "misc.hh"
+#include "rhythmic-head.hh"
+#include "script-interface.hh"
+#include "staff-symbol-referencer.hh"
#include "stem-tremolo.hh"
-#include "item.hh"
-#include "translator-group.hh"
-#include "engraver.hh"
-
-
+#include "stem.hh"
/**
Make stems upon receiving noteheads.
*/
class Stem_engraver : public Engraver
{
- TRANSLATOR_DECLARATIONS(Stem_engraver);
+ Grob *stem_;
+ Grob *tremolo_;
+ Music *rhythmic_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*);
-
-private:
- Grob *stem_;
- Grob *tremolo_;
- Music *rhythmic_ev_;
- Music* tremolo_ev_;
+ virtual bool try_music (Music *);
};
Stem_engraver::Stem_engraver ()
rhythmic_ev_ =0;
}
-
void
-Stem_engraver::acknowledge_grob (Grob_info i)
+Stem_engraver::make_stem (Grob_info gi)
{
- Grob* h = i.grob_;
- if (Rhythmic_head::has_interface (h))
+ /* Announce the cause of the head as cause of the stem. The
+ 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));
+
+ if (tremolo_ev_)
{
- if (Rhythmic_head::get_stem (h))
- return;
+ /* Stem tremolo is never applied to a note by default,
+ is must me requested. But there is a default for the
+ tremolo value:
- /* Reverted to the old method so chord tremolos work again. /MB
- */
- int duration_log = 0;
+ c4:8 c c:
- Music * m = i.music_cause ();
- if (m->is_mus_type ("rhythmic-event"))
- duration_log = unsmob_duration (m->get_mus_property ("duration"))-> duration_log ();
-
- if (!stem_)
+ the first and last (quarter) note bothe get one tremolo flag. */
+ int requested_type
+ = scm_to_int (tremolo_ev_->get_property ("tremolo-type"));
+ SCM f = get_property ("tremoloFlags");
+ if (!requested_type)
{
- stem_ = make_item ("Stem");
-
- stem_->set_grob_property ("duration-log", gh_int2scm (duration_log));
-
- if (tremolo_ev_)
- {
- /*
- Stem tremolo is never applied to a note by default,
- is must me evuested. But there is a default for the
- tremolo value:
-
- c4:8 c c:
-
- the first and last (quarter) note bothe get one tremolo flag.
- */
- int evuested_type = gh_scm2int (tremolo_ev_->get_mus_property ("tremolo-type"));
- SCM f = get_property ("tremoloFlags");
- if (!evuested_type)
- if (gh_number_p (f))
- evuested_type = gh_scm2int (f);
- else
- evuested_type = 8;
- else
- daddy_trans_->set_property ("tremoloFlags", gh_int2scm (evuested_type));
-
- int tremolo_flags = intlog2 (evuested_type) - 2
- - (duration_log > 2 ? duration_log - 2 : 0);
- if (tremolo_flags <= 0)
- {
- tremolo_ev_->origin()->warning (_("tremolo duration is too long"));
- tremolo_flags = 0;
- }
-
- if (tremolo_flags)
- {
- tremolo_ = make_item ("StemTremolo");
- announce_grob(tremolo_, 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_->set_grob_property ("flag-count",
- gh_int2scm (tremolo_flags));
- tremolo_->set_parent (stem_, X_AXIS);
- stem_->set_grob_property ("tremolo-flag", tremolo_->self_scm ());
- }
- }
-
- /*
- We announce the cause of the head as cause of the stem.
- The stem needs a rhythmic structure to fit it into a beam. */
- announce_grob(stem_, i.music_cause ()->self_scm());
+ if (scm_is_number (f))
+ requested_type = scm_to_int (f);
+ else
+ requested_type = 8;
}
+ else
+ context ()->set_property ("tremoloFlags", scm_int2num (requested_type));
- if (Stem::duration_log (stem_) != duration_log)
+ int tremolo_flags = intlog2 (requested_type) - 2
+ - (duration_log > 2 ? duration_log - 2 : 0);
+ if (tremolo_flags <= 0)
{
- i.music_cause ()->origin ()->warning (_f ("Adding note head to incompatible stem (type = %d)", 1 << Stem::duration_log (stem_))
- + _f ("Don't you want polyphonic voices instead?")
- );
+ tremolo_ev_->origin ()->warning (_("tremolo duration is too long"));
+ tremolo_flags = 0;
}
- Stem::add_head (stem_,h);
+ if (tremolo_flags)
+ {
+ 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_->set_property ("flag-count", scm_int2num (tremolo_flags));
+ tremolo_->set_parent (stem_, X_AXIS);
+ stem_->set_property ("tremolo-flag", tremolo_->self_scm ());
+ tremolo_->set_property ("stem", stem_->self_scm ());
+ }
}
}
void
-Stem_engraver::stop_translation_timestep ()
+Stem_engraver::acknowledge_grob (Grob_info gi)
{
- if (tremolo_)
+ if (Rhythmic_head::has_interface (gi.grob_))
{
- Stem_tremolo::set_stem (tremolo_, stem_);
- typeset_grob (tremolo_);
- tremolo_ = 0;
+ if (Rhythmic_head::get_stem (gi.grob_))
+ return;
+
+ Music * cause = gi.music_cause ();
+ if (!cause)
+ 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?"));
+ }
+
+ Stem::add_head (stem_, gi.grob_);
}
+}
+void
+Stem_engraver::stop_translation_timestep ()
+{
+ tremolo_ = 0;
if (stem_)
{
+ /* FIXME: junk these properties. */
SCM prop = get_property ("stemLeftBeamCount");
- if (gh_number_p (prop))
+ if (scm_is_number (prop))
{
- Stem::set_beaming (stem_,gh_scm2int (prop),LEFT);
- daddy_trans_->unset_property (ly_symbol2scm ("stemLeftBeamCount"));
+ Stem::set_beaming (stem_,scm_to_int (prop),LEFT);
+ context ()->unset_property (ly_symbol2scm ("stemLeftBeamCount"));
}
prop = get_property ("stemRightBeamCount");
- if (gh_number_p (prop))
+ if (scm_is_number (prop))
{
- Stem::set_beaming (stem_,gh_scm2int (prop), RIGHT);
- daddy_trans_->unset_property (ly_symbol2scm ("stemRightBeamCount"));
+ Stem::set_beaming (stem_,scm_to_int (prop), RIGHT);
+ context ()->unset_property (ly_symbol2scm ("stemRightBeamCount"));
}
-
- typeset_grob (stem_);
stem_ = 0;
}
-
-
tremolo_ev_ = 0;
}
bool
-Stem_engraver::try_music (Music* r)
+Stem_engraver::try_music (Music *m)
{
- if (r->is_mus_type ("tremolo-event"))
+ if (m->is_mus_type ("tremolo-event"))
{
- tremolo_ev_ = r;
+ tremolo_ev_ = m;
return true;
}
return false;
}
-ENTER_DESCRIPTION(Stem_engraver,
+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",
projects / lilypond.git / blobdiff