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"
class Chord_name_engraver : public Engraver
{
-public:
- Chord_name_engraver ();
- VIRTUAL_COPY_CONS (Translator);
-
+ TRANSLATOR_DECLARATIONS( Chord_name_engraver);
protected:
virtual void stop_translation_timestep ();
- virtual void acknowledge_grob (Grob_info i);
- virtual void create_grobs ();
+ virtual void process_music ();
virtual bool try_music (Music *);
private:
void add_note (Note_req *);
- Item* chord_name_p_;
+ Item* chord_name_;
+
Protected_scm chord_;
Protected_scm last_chord_;
};
-ADD_THIS_TRANSLATOR (Chord_name_engraver);
+
Chord_name_engraver::Chord_name_engraver ()
{
- chord_name_p_ = 0;
+ chord_name_ = 0;
chord_ = gh_cons (SCM_EOL, gh_cons (SCM_EOL, SCM_EOL));
- last_chord_ = SCM_EOL;
+ last_chord_ = chord_;
}
void
Chord_name_engraver::add_note (Note_req* n)
{
- SCM pitches = gh_car (chord_);
- SCM modifiers = gh_cdr (chord_);
- SCM inversion = modifiers == SCM_EOL ? SCM_EOL : gh_car (modifiers);
- SCM bass = modifiers == SCM_EOL ? SCM_EOL : gh_cdr (modifiers);
+ 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");
}
void
-Chord_name_engraver::acknowledge_grob (Grob_info i)
+Chord_name_engraver::process_music ()
{
- if (Note_req* n = dynamic_cast<Note_req*> (i.req_l_))
- add_note (n);
-}
-
-void
-Chord_name_engraver::create_grobs ()
-{
- if (!chord_name_p_ && gh_car (chord_) != SCM_EOL)
+ if (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);
+ chord_name_ = new Item (get_property ("ChordName"));
+ chord_name_->set_grob_property ("chord", chord_);
+ announce_grob(chord_name_, SCM_EOL);
SCM s = get_property ("chordChanges");
-#ifdef DEBUG
- /*
- gdb crashes upon printscm (chord_) etc...
- ugh: why does gh_equal_p () not seem to work??
- */
- printf ("chord: %s\n", ly_scm2string (ly_write2scm (chord_)).ch_C ());
- printf ("last_chord: %s\n", ly_scm2string (ly_write2scm (last_chord_)).ch_C ());
- int i = gh_equal_p (chord_, last_chord_);
- printf ("i: %d\n", i);
-#endif
- if (to_boolean (s) && last_chord_ != SCM_EOL
- && gh_equal_p (chord_, last_chord_))
- chord_name_p_->set_grob_property ("begin-of-line-visible", SCM_BOOL_T);
+ if (to_boolean (s) && ly_car (last_chord_) != SCM_EOL
+ && gh_equal_p (chord_, last_chord_))
+ chord_name_->set_grob_property ("begin-of-line-visible", SCM_BOOL_T);
}
}
void
Chord_name_engraver::stop_translation_timestep ()
{
- if (chord_name_p_)
+ if (chord_name_)
{
- typeset_grob (chord_name_p_);
+ typeset_grob (chord_name_);
}
- chord_name_p_ = 0;
+ chord_name_ = 0;
- last_chord_ = chord_;
+ 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 */ "",
+/* reads */ "chordChanges",
+/* write */ "");