(c) 1997--2000 Jan Nieuwenhuizen <janneke@gnu.org>
*/
-#include "time-signature-performer.hh"
-#include "command-request.hh"
#include "audio-item.hh"
+#include "lily-proto.hh"
+#include "performer.hh"
+
+
+class Time_signature_performer : public Performer
+{
+public:
+ VIRTUAL_COPY_CONS(Translator);
+
+ Time_signature_performer();
+ ~Time_signature_performer();
+
+protected:
+
+ virtual void stop_translation_timestep ();
+ virtual void create_audio_elements ();
+
+ SCM prev_fraction_;
+private:
+ Time_signature_change_req* time_signature_req_l_;
+ Audio_time_signature* audio_p_;
+};
-ADD_THIS_TRANSLATOR (Time_signature_performer);
Time_signature_performer::Time_signature_performer ()
{
- time_signature_req_l_ = 0;
+ prev_fraction_ = SCM_BOOL_F;
audio_p_ = 0;
}
void
-Time_signature_performer::do_process_music ()
+Time_signature_performer::create_audio_elements ()
{
- if (time_signature_req_l_)
+ SCM fr = get_property ("timeSignatureFraction");
+ if (gh_pair_p (fr)
+ && scm_equal_p (fr, prev_fraction_) != SCM_BOOL_T)
{
- audio_p_ = new Audio_time_signature (time_signature_req_l_->beats_i_, time_signature_req_l_->one_beat_i_);
- Audio_element_info info (audio_p_, time_signature_req_l_);
+ int b = gh_scm2int (gh_car (fr));
+ int o = gh_scm2int (gh_cdr (fr));
+
+ audio_p_ = new Audio_time_signature (b,o);
+ Audio_element_info info (audio_p_, 0);
announce_element (info);
time_signature_req_l_ = 0;
}
}
void
-Time_signature_performer::do_pre_move_processing ()
+Time_signature_performer::stop_translation_timestep ()
{
if (audio_p_)
{
audio_p_ = 0;
}
}
-
-bool
-Time_signature_performer::do_try_music (Music* req_l)
-{
- if (time_signature_req_l_)
- return false;
-
- if (Time_signature_change_req *t =
- dynamic_cast <Time_signature_change_req *> (req_l))
- {
- time_signature_req_l_ = t;
- return true;
- }
-
- return false;
-}
+ADD_THIS_TRANSLATOR (Time_signature_performer);