source file of the GNU LilyPond music typesetter
- (c) 1997--2005 Jan Nieuwenhuizen <janneke@gnu.org>
+ (c) 1997--2006 Jan Nieuwenhuizen <janneke@gnu.org>
*/
-#include "music-sequence.hh"
#include "audio-item.hh"
+#include "music-sequence.hh"
#include "performer.hh"
+#include "stream-event.hh"
#include "warn.hh"
+#include "translator.icc"
+
class Key_performer : public Performer
{
public:
~Key_performer ();
protected:
- virtual bool try_music (Music *ev);
- virtual void create_audio_elements ();
- PRECOMPUTED_VIRTUAL void stop_translation_timestep ();
+ void process_music ();
+ void stop_translation_timestep ();
+ DECLARE_TRANSLATOR_LISTENER (key_change);
private:
- Music *key_ev_;
+ Stream_event *key_ev_;
Audio_key *audio_;
};
}
void
-Key_performer::create_audio_elements ()
+Key_performer::process_music ()
{
if (key_ev_)
{
bool minor = (scm_is_pair (third)
&& scm_is_integer (scm_cdr (third))
&& scm_to_int (scm_cdr (third)) == FLAT);
-
+
audio_ = new Audio_key (scm_to_int (acc),
!minor);
-
+
Audio_element_info info (audio_, key_ev_);
announce_element (info);
key_ev_ = 0;
{
if (audio_)
{
- play_element (audio_);
audio_ = 0;
}
}
-bool
-Key_performer::try_music (Music *ev)
+IMPLEMENT_TRANSLATOR_LISTENER (Key_performer, key_change);
+void
+Key_performer::listen_key_change (Stream_event *ev)
{
if (!key_ev_)
- {
- key_ev_ = ev;
- }
-
- return true;
+ key_ev_ = ev;
}
-#include "translator.icc"
-
ADD_TRANSLATOR (Key_performer,
"", "",
- "key-change-event",
- "", "", "");
+ "", "");