* buildscripts/output-distance.py (FileLink.calc_distance): count

[lilypond.git] / lily / control-track-performer.cc

diff --git a/lily/control-track-performer.cc b/lily/control-track-performer.cc
new file mode 100644 (file)
index 0000000..ec4ef83
--- /dev/null
+++ b/lily/control-track-performer.cc
@@ -0,0 +1,70 @@
+
+
+#include "warn.hh"
+#include "audio-item.hh"
+#include "audio-staff.hh"
+#include "performer.hh"
+#include "string-convert.hh"
+#include "lily-version.hh"
+
+#include "translator.icc"
+
+class Control_track_performer : public Performer
+{
+  Audio_staff *control_track_;
+  vector<Audio_item*> texts_;
+
+  void add_text (Audio_text::Type, string);
+  TRANSLATOR_DECLARATIONS(Control_track_performer);
+protected:
+
+  virtual void initialize ();
+  virtual void acknowledge_audio_element (Audio_element_info info);
+};
+
+
+Control_track_performer::Control_track_performer ()
+{
+  control_track_ = 0;
+}
+
+void
+Control_track_performer::acknowledge_audio_element (Audio_element_info info)
+{
+  if (Audio_tempo *tempo = dynamic_cast<Audio_tempo*> (info.elem_))
+    {
+      control_track_->add_audio_item (tempo);
+    }
+  if (Audio_time_signature * sig = dynamic_cast<Audio_time_signature *> (info.elem_))
+    {
+      control_track_->add_audio_item (sig);
+    }
+}
+
+void
+Control_track_performer::add_text (Audio_text::Type text_type, string str)
+{
+  Audio_item *text = new Audio_text (text_type, str);
+  control_track_->add_audio_item (text);
+  texts_.push_back (text);
+
+  announce_element (Audio_element_info (text, 0));
+  
+}
+
+void
+Control_track_performer::initialize ()
+{
+  control_track_ = new Audio_staff;
+  announce_element (Audio_element_info (control_track_, 0));
+
+  string id_string = String_convert::pad_to (gnu_lilypond_version_string (), 30);
+  
+  add_text (Audio_text::TRACK_NAME, "control track");
+  add_text (Audio_text::TEXT, "creator: ");
+  add_text (Audio_text::TEXT, id_string);
+}
+
+ADD_TRANSLATOR (Control_track_performer, "", "",
+               "",
+               "", "");