source file of the GNU LilyPond music typesetter
- (c) 1998--2000 Jan Nieuwenhuizen <janneke@gnu.org>
+ (c) 1998--2002 Jan Nieuwenhuizen <janneke@gnu.org>
*/
#include "engraver.hh"
#include "main.hh"
#include "dimensions.hh"
#include "item.hh"
-#include "musical-pitch.hh"
+#include "pitch.hh"
+#include "protected-scm.hh"
class Chord_name_engraver : public Engraver
{
-public:
- Chord_name_engraver ();
- VIRTUAL_COPY_CONS (Translator);
+
+ TRANSLATOR_DECLARATIONS( Chord_name_engraver);
protected:
- virtual void do_pre_move_processing ();
- virtual void acknowledge_element (Score_element_info i);
- virtual void do_process_music ();
- virtual bool do_try_music (Music* m);
+ virtual void stop_translation_timestep ();
+ virtual void acknowledge_grob (Grob_info i);
+ virtual void create_grobs ();
+ virtual bool try_music (Music *);
private:
- void create_chord_name ();
-
- Array<Musical_pitch> pitch_arr_;
+ void add_note (Note_req *);
+
Item* chord_name_p_;
- Chord* chord_p_;
- Chord* last_chord_p_;
- Tonic_req* tonic_req_;
- Inversion_req* inversion_req_;
- Bass_req* bass_req_;
+
+ Protected_scm chord_;
+ Protected_scm last_chord_;
};
-ADD_THIS_TRANSLATOR (Chord_name_engraver);
+
Chord_name_engraver::Chord_name_engraver ()
{
chord_name_p_ = 0;
- tonic_req_ = 0;
- inversion_req_ = 0;
- bass_req_ = 0;
- chord_p_ = 0;
- last_chord_p_ = 0;
+ chord_ = gh_cons (SCM_EOL, gh_cons (SCM_EOL, SCM_EOL));
+ last_chord_ = chord_;
}
void
-Chord_name_engraver::acknowledge_element (Score_element_info i)
+Chord_name_engraver::add_note (Note_req* n)
{
- if (Note_req* n = dynamic_cast<Note_req*> (i.req_l_))
- pitch_arr_.push (n->pitch_);
+ SCM pitches = ly_car (chord_);
+ SCM modifiers = ly_cdr (chord_);
+ SCM inversion = modifiers == SCM_EOL ? SCM_EOL : ly_car (modifiers);
+ SCM bass = modifiers == SCM_EOL ? SCM_EOL : ly_cdr (modifiers);
+
+ if (n->get_mus_property ("inversion") == SCM_BOOL_T)
+ inversion = n->get_mus_property ("pitch");
+ else if (n->get_mus_property ("bass") == SCM_BOOL_T)
+ bass = n->get_mus_property ("pitch");
+ else
+ pitches = scm_sort_list (gh_cons (n->get_mus_property ("pitch"), pitches),
+ Pitch::less_p_proc);
+ chord_ = gh_cons (pitches, gh_cons (inversion, bass));
}
bool
-Chord_name_engraver::do_try_music (Music* m)
+Chord_name_engraver::try_music (Music* m)
{
if (Note_req* n = dynamic_cast<Note_req*> (m))
{
- pitch_arr_.push (n->pitch_);
- return true;
- }
- if (Tonic_req* t = dynamic_cast<Tonic_req*> (m))
- {
- tonic_req_ = t;
- return true;
- }
- if (Inversion_req* i = dynamic_cast<Inversion_req*> (m))
- {
- inversion_req_ = i;
- return true;
- }
- if (Bass_req* b = dynamic_cast<Bass_req*> (m))
- {
- bass_req_ = b;
+ add_note (n);
return true;
}
return false;
}
void
-Chord_name_engraver::do_process_music ()
+Chord_name_engraver::acknowledge_grob (Grob_info i)
{
- if (chord_name_p_)
- return;
-
- if (!pitch_arr_.size ())
- return;
-
- bool find_inversion_b = false;
- SCM chord_inversion = get_property ("chordInversion");
- if (gh_boolean_p (chord_inversion))
- find_inversion_b = gh_scm2bool (chord_inversion);
-
- chord_p_ = new Chord (to_chord (pitch_arr_,
- tonic_req_, inversion_req_, bass_req_,
- find_inversion_b));
-
- create_chord_name ();
- announce_element (chord_name_p_, 0);
- SCM s = get_property ("drarnChords"); //FIXME!
- if (to_boolean (s) && last_chord_p_ && !compare (chord_p_, last_chord_p_))
- chord_name_p_->set_elt_property ("begin-of-line-visible", SCM_BOOL_T);
+ if (Note_req* n = dynamic_cast<Note_req*> (i.music_cause ()))
+ add_note (n);
}
void
-Chord_name_engraver::create_chord_name ()
+Chord_name_engraver::create_grobs ()
{
- assert (chord_p_);
- chord_name_p_ = new Item (get_property ("ChordName"));
- /*
- Hmm, why not represent complete chord as list?
- ((tonic third fifth) (inversion bass))
- */
- SCM plist = SCM_EOL;
- for (int i= chord_p_->pitch_arr_.size (); i--; )
- plist = gh_cons (chord_p_->pitch_arr_[i].to_scm (), plist);
-
- chord_name_p_->set_elt_property ("pitches", plist);
- if (chord_p_->inversion_b_)
- chord_name_p_->set_elt_property ("inversion",
- chord_p_->inversion_pitch_.to_scm ());
- if (chord_p_->bass_b_)
- chord_name_p_->set_elt_property ("bass", chord_p_->bass_pitch_.to_scm ());
+ if (!chord_name_p_ && ly_car (chord_) != SCM_EOL)
+ {
+ chord_name_p_ = new Item (get_property ("ChordName"));
+ chord_name_p_->set_grob_property ("chord", chord_);
+ announce_grob (chord_name_p_, 0);
+ SCM s = get_property ("chordChanges");
+ if (to_boolean (s) && ly_car (last_chord_) != SCM_EOL
+ && gh_equal_p (chord_, last_chord_))
+ chord_name_p_->set_grob_property ("begin-of-line-visible", SCM_BOOL_T);
+ }
}
void
-Chord_name_engraver::do_pre_move_processing ()
+Chord_name_engraver::stop_translation_timestep ()
{
if (chord_name_p_)
{
- typeset_element (chord_name_p_);
+ typeset_grob (chord_name_p_);
}
- pitch_arr_.clear ();
chord_name_p_ = 0;
- tonic_req_ = 0;
- inversion_req_ = 0;
- bass_req_ = 0;
- delete last_chord_p_;
- last_chord_p_ = chord_p_;
- chord_p_ = 0;
+
+ if (ly_car (chord_) != SCM_EOL)
+ last_chord_ = chord_;
+ chord_ = gh_cons (SCM_EOL, gh_cons (SCM_EOL, SCM_EOL));
}
+ENTER_DESCRIPTION(Chord_name_engraver,
+/* descr */ "Catch Note_req's, Tonic_reqs, Inversion_reqs, Bass_req
+and generate the appropriate chordname.",
+/* creats*/ "ChordName",
+/* acks */ "grob-interface",
+/* reads */ "chordChanges",
+/* write */ "");