source file of the GNU LilyPond music typesetter
- (c) 1997--1999 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1997--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
-#include "stem-engraver.hh"
-#include "note-head.hh"
+#include "staff-symbol-referencer.hh"
+#include "rhythmic-head.hh"
#include "stem.hh"
#include "musical-request.hh"
-#include "duration-convert.hh"
#include "misc.hh"
#include "stem-tremolo.hh"
-#include "staff-info.hh"
+
#include "translator-group.hh"
+#include "engraver.hh"
+
+/**
+ Make stems upon receiving noteheads.
+ */
+class Stem_engraver : public Engraver
+{
-Stem_engraver::Stem_engraver()
+public:
+ VIRTUAL_COPY_CONS (Translator);
+ Stem_engraver();
+
+protected:
+ virtual void do_creation_processing ();
+ virtual void acknowledge_element (Score_element_info);
+ virtual void do_pre_move_processing ();
+ virtual bool do_try_music (Music*);
+
+private:
+ int default_tremolo_type_i_;
+ Stem *stem_p_;
+ Score_element *tremolo_p_;
+ Rhythmic_req *rhythmic_req_l_;
+ Tremolo_req* tremolo_req_l_;
+};
+
+ADD_THIS_TRANSLATOR (Stem_engraver);
+
+Stem_engraver::Stem_engraver ()
{
- abbrev_req_l_ = 0;
+ tremolo_req_l_ = 0;
stem_p_ = 0;
- abbrev_p_ = 0;
- default_abbrev_i_ = 16;
+ tremolo_p_ = 0;
+ default_tremolo_type_i_ = 16;
rhythmic_req_l_ =0;
}
void
Stem_engraver::do_creation_processing ()
{
- Scalar prop = get_property ("abbrev", 0);
- if (prop.isnum_b ())
+ /*
+ huh, why only at creation time?
+ */
+ SCM prop = get_property ("tremoloFlags");
+ if (gh_number_p(prop))
{
- default_abbrev_i_ = prop;
+ default_tremolo_type_i_ = gh_scm2int (prop);
}
}
{
if (Rhythmic_head * h = dynamic_cast<Rhythmic_head *> (i.elem_l_))
{
- if (h->stem_l_)
+ if (h->stem_l ())
return;
Rhythmic_req * r = dynamic_cast <Rhythmic_req *> (i.req_l_);
int duration_log = r->duration_.durlog_i_;
if (!stem_p_)
{
- stem_p_ = new Stem;
- stem_p_->flag_i_ = duration_log;
+ stem_p_ = new Stem (get_property ("basicStemProperties"));
+ Staff_symbol_referencer_interface::set_interface(stem_p_);
- if (abbrev_req_l_)
+
+ stem_p_->set_elt_property ("duration-log", gh_int2scm (duration_log));
+
+ if (tremolo_req_l_)
{
/*
- suggests typing of:
- c8:16 c: c: c:
- hmm, which isn't so bad?
- */
- int t = abbrev_req_l_->type_i_;
- if (!t)
- t = default_abbrev_i_;
+ Stem tremolo is never applied to a note by default,
+ is must me requested. 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 requested_type = tremolo_req_l_->type_i_;
+ if (!requested_type)
+ requested_type = default_tremolo_type_i_;
else
- default_abbrev_i_ = t;
+ default_tremolo_type_i_ = requested_type;
- if (t)
+ if (requested_type)
{
- abbrev_p_ = new Stem_tremolo;
- announce_element (Score_element_info (abbrev_p_, abbrev_req_l_));
- abbrev_p_->abbrev_flags_i_ =intlog2 (t) - (duration_log>? 2);
+ tremolo_p_ = new Item (get_property ("basicStemTremoloProperties"));
+ Stem_tremolo::set_interface (tremolo_p_);
+
+ announce_element (Score_element_info (tremolo_p_, tremolo_req_l_));
+ /*
+ The number of tremolo flags is the number of flags of
+ the tremolo-type minus the number of flags of the note
+ itself.
+ */
+ int tremolo_flags = intlog2 (requested_type) - 2
+ - (duration_log > 2 ? duration_log - 2 : 0);
+ if (tremolo_flags < 0)
+ tremolo_flags = 0;
+ tremolo_p_->set_elt_property ("tremolo-flags",
+ gh_int2scm (tremolo_flags));
}
}
-
- // must give the request, to preserve the rhythmic info.
announce_element (Score_element_info (stem_p_, r));
}
- if (stem_p_->flag_i_ != duration_log)
+ if (stem_p_->flag_i () != duration_log)
{
- r->warning (_f ("Adding note head to incompatible stem (type = %d)", 1 << stem_p_->flag_i_));
+ r->warning (_f ("Adding note head to incompatible stem (type = %d)", 1 << stem_p_->flag_i ()));
}
stem_p_->add_head (h);
void
Stem_engraver::do_pre_move_processing()
{
- if (abbrev_p_)
+ if (tremolo_p_)
{
- abbrev_p_->set_stem (stem_p_);
- typeset_element (abbrev_p_);
- abbrev_p_ = 0;
+ Stem_tremolo::set_stem (tremolo_p_, stem_p_);
+ typeset_element (tremolo_p_);
+ tremolo_p_ = 0;
}
if (stem_p_)
{
- Scalar prop = get_property ("verticalDirection", 0);
- Direction dir = prop.isnum_b () ? (Direction)int(prop) : CENTER;
- if (dir)
+ SCM prop = get_property ("stemLeftBeamCount");
+ if (gh_number_p(prop))
{
- stem_p_->dir_ = dir;
- stem_p_->set_elt_property (dir_forced_scm_sym, SCM_BOOL_T);
+ stem_p_->set_beaming (gh_scm2int (prop),LEFT);
+ daddy_trans_l_->set_property ("stemLeftBeamCount", SCM_UNDEFINED);
}
-
- Translator_group* which;
- prop = get_property ("stemLeftBeamCount", &which);
- if (prop.isnum_b ())
+ prop = get_property ("stemRightBeamCount");
+ if (gh_number_p(prop))
{
- stem_p_->beams_i_drul_[LEFT] = prop;
- ((Translator_group*)which)->set_property ("stemLeftBeamCount", "");
- }
- prop = get_property ("stemRightBeamCount", &which);
- if (prop.isnum_b ())
- {
- stem_p_->beams_i_drul_[RIGHT] = prop;
- ((Translator_group*)which)->set_property ("stemRightBeamCount", "");
+ stem_p_->set_beaming (gh_scm2int (prop), RIGHT);
+ daddy_trans_l_->set_property ("stemRightBeamCount", SCM_UNDEFINED);
}
- prop = get_property ("stemLength", 0);
- if (prop.isnum_b ())
+
+ // UGH. Should mark non-forced instead.
+
+ /*
+ aargh: I don't get it. direction is being set (and then set
+ to forced), if we have a Chord_tremolo.
+ */
+ SCM dir = stem_p_->get_elt_property ("direction");
+ if (gh_number_p (dir) && to_dir(dir))
{
- stem_p_->set_elt_property (length_scm_sym, gh_double2scm (prop.to_f ()));
+ stem_p_->set_elt_property ("dir-forced", SCM_BOOL_T);
}
- prop = get_property ("stemStyle", 0);
- if (prop.to_bool ())
- {
- stem_p_->set_elt_property (style_scm_sym, ly_ch_C_to_scm (prop.ch_C()));
- }
-
typeset_element(stem_p_);
stem_p_ = 0;
}
- abbrev_req_l_ = 0;
+
+
+ tremolo_req_l_ = 0;
}
bool
{
if (Tremolo_req* a = dynamic_cast <Tremolo_req *> (r))
{
- abbrev_req_l_ = a;
+ tremolo_req_l_ = a;
return true;
}
return false;
}
-
-ADD_THIS_TRANSLATOR(Stem_engraver);
projects / lilypond.git / blobdiff