source file of the GNU LilyPond music typesetter
- (c) 1997--2000 Jan Nieuwenhuizen <janneke@gnu.org>
+ (c) 1997--2002 Jan Nieuwenhuizen <janneke@gnu.org>
*/
+#include "lily-guile.hh"
#include "command-request.hh"
#include "audio-item.hh"
#include "performer.hh"
+#include "warn.hh"
+
class Key_performer : public Performer
{
public:
- VIRTUAL_COPY_CONS(Translator);
-
- Key_performer();
- ~Key_performer();
+ TRANSLATOR_DECLARATIONS(Key_performer);
+ ~Key_performer ();
protected:
- virtual bool do_try_music (Music* req_l);
- virtual void process_acknowledged ();
- virtual void do_pre_move_processing ();
+ virtual bool try_music (Music* req);
+ virtual void create_audio_elements ();
+ virtual void stop_translation_timestep ();
private:
- Key_change_req* key_req_l_;
- Audio_key* audio_p_;
+ Key_change_req* key_req_;
+ Audio_key* audio_;
};
-ADD_THIS_TRANSLATOR (Key_performer);
-
Key_performer::Key_performer ()
{
- key_req_l_ = 0;
- audio_p_ = 0;
+ key_req_ = 0;
+ audio_ = 0;
}
Key_performer::~Key_performer ()
}
void
-Key_performer::process_acknowledged ()
+Key_performer::create_audio_elements ()
{
- if (key_req_l_ &&
- gh_list_p (key_req_l_->get_mus_property ("pitch-alist")))
+ if (key_req_)
{
- audio_p_ = new Audio_key (); // *key_req_l_->key_);
- Audio_element_info info (audio_p_, key_req_l_);
+
+ /*
+ UGH. primitive-eval.
+ */
+ SCM pitchlist = key_req_->get_mus_property ("pitch-alist");
+ SCM proc = scm_primitive_eval (ly_symbol2scm ("accidentals-in-key"));
+ SCM acc = gh_call1 (proc, pitchlist);
+ proc = scm_primitive_eval (ly_symbol2scm ("major-key"));
+
+ Pitch my_do (0,
+ gh_scm2int (ly_caar (pitchlist)),
+ gh_scm2int (ly_cdar (pitchlist)));
+
+ Pitch to_c (-1,
+ (7 - gh_scm2int (ly_caar (pitchlist))) % 7,
+ -gh_scm2int (ly_cdar (pitchlist)));
+
+ my_do.transpose (to_c);
+ to_c.alteration_ -= my_do.alteration_;
+
+ SCM c_pitchlist = transpose_key_alist (pitchlist, to_c.smobbed_copy());
+ SCM major = gh_call1 (proc, c_pitchlist);
+
+ audio_ = new Audio_key (gh_scm2int (acc), major == SCM_BOOL_T);
+ Audio_element_info info (audio_, key_req_);
announce_element (info);
- key_req_l_ = 0;
+ key_req_ = 0;
}
}
void
-Key_performer::do_pre_move_processing ()
+Key_performer::stop_translation_timestep ()
{
- if (audio_p_)
+ if (audio_)
{
- play_element (audio_p_);
- audio_p_ = 0;
+ play_element (audio_);
+ audio_ = 0;
}
}
bool
-Key_performer::do_try_music (Music* req_l)
+Key_performer::try_music (Music* req)
{
- if (Key_change_req *kc = dynamic_cast <Key_change_req *> (req_l))
+ if (Key_change_req *kc = dynamic_cast <Key_change_req *> (req))
{
- if (key_req_l_)
+ if (key_req_)
warning (_ ("FIXME: key change merge"));
- key_req_l_ = kc;
+ key_req_ = kc;
return true;
}
return false;
}
+ENTER_DESCRIPTION(Key_performer,
+ "","",
+ "general-music",
+ "","","");