-/*
+/*
arpeggio-engraver.cc -- implement Arpeggio_engraver
-
+
source file of the GNU LilyPond music typesetter
-
- (c) 2000--2001 Jan Nieuwenhuizen <janneke@gnu.org>
- */
+
+ (c) 2000--2008 Jan Nieuwenhuizen <janneke@gnu.org>
+*/
#include "engraver.hh"
-#include "group-interface.hh"
-#include "item.hh"
-#include "musical-request.hh"
+
+#include "pointer-group-interface.hh"
#include "arpeggio.hh"
#include "stem.hh"
-#include "local-key-item.hh"
#include "rhythmic-head.hh"
#include "side-position-interface.hh"
-#include "staff-symbol-referencer.hh"
+#include "stream-event.hh"
+#include "note-column.hh"
+#include "item.hh"
+
+#include "translator.icc"
class Arpeggio_engraver : public Engraver
{
public:
- VIRTUAL_COPY_CONS (Translator);
- Arpeggio_engraver ();
+ TRANSLATOR_DECLARATIONS (Arpeggio_engraver);
+ void acknowledge_stem (Grob_info);
+ void acknowledge_rhythmic_head (Grob_info);
protected:
- virtual void acknowledge_grob (Grob_info);
- virtual void create_grobs ();
- virtual void stop_translation_timestep ();
- virtual bool try_music (Music *);
-
+ void process_music ();
+ void stop_translation_timestep ();
+ DECLARE_TRANSLATOR_LISTENER (arpeggio);
private:
- Item* arpeggio_;
- Arpeggio_req *arpeggio_req_;
- Link_array <Grob> stems_;
- Link_array<Grob> supports_;
+ Item *arpeggio_;
+ Stream_event *arpeggio_event_;
};
Arpeggio_engraver::Arpeggio_engraver ()
{
arpeggio_ = 0;
- arpeggio_req_ = 0;
+ arpeggio_event_ = 0;
}
-bool
-Arpeggio_engraver::try_music (Music* m)
+IMPLEMENT_TRANSLATOR_LISTENER (Arpeggio_engraver, arpeggio);
+void Arpeggio_engraver::listen_arpeggio (Stream_event *ev)
{
- if (!arpeggio_req_)
- {
- if (Arpeggio_req *a = dynamic_cast<Arpeggio_req*> (m))
- {
- arpeggio_req_ = a;
- return true;
- }
- }
- return false;
+ ASSIGN_EVENT_ONCE (arpeggio_event_, ev);
}
void
-Arpeggio_engraver::acknowledge_grob (Grob_info info)
+Arpeggio_engraver::acknowledge_stem (Grob_info info)
{
- if (arpeggio_req_)
+ if (arpeggio_)
{
- if (Stem::has_interface (info.elem_l_))
- {
- stems_.push (info.elem_l_);
- }
-
- /*
- We can't catch local key items (accidentals) from Voice context,
- see Local_key_engraver
- */
- else if (Rhythmic_head::has_interface (info.elem_l_))
- {
- supports_.push (info.elem_l_);
- }
+ if (!arpeggio_->get_parent (Y_AXIS))
+ arpeggio_->set_parent (info.grob (), Y_AXIS);
+
+ Pointer_group_interface::add_grob (arpeggio_,
+ ly_symbol2scm ("stems"),
+ info.grob ());
}
}
+void
+Arpeggio_engraver::acknowledge_rhythmic_head (Grob_info info)
+{
+ if (arpeggio_)
+
+ /*
+ We can't catch local key items (accidentals) from Voice context,
+ see Local_key_engraver
+ */
+ Side_position_interface::add_support (arpeggio_, info.grob ());
+}
void
-Arpeggio_engraver::create_grobs ()
+Arpeggio_engraver::process_music ()
{
- if (!arpeggio_ && !stems_.empty ())
+ if (arpeggio_event_)
{
- arpeggio_ = new Item (get_property ("Arpeggio"));
- arpeggio_->set_parent (stems_[0], Y_AXIS);
-
- for (int i = 0; i < stems_.size (); i++)
- {
- Pointer_group_interface::add_element (arpeggio_, "stems", stems_[i]);
- }
- for (int i = 0; i < supports_.size (); i++)
- {
- Side_position_interface::add_support (arpeggio_, supports_[i]);
- }
- announce_grob (arpeggio_, arpeggio_req_);
+ arpeggio_ = make_item ("Arpeggio", arpeggio_event_->self_scm ());
}
}
void
Arpeggio_engraver::stop_translation_timestep ()
{
- if (arpeggio_)
- {
- typeset_grob (arpeggio_);
- arpeggio_ = 0;
- }
- arpeggio_req_ = 0;
- stems_.clear ();
- supports_.clear ();
+ arpeggio_ = 0;
+ arpeggio_event_ = 0;
}
+ADD_ACKNOWLEDGER (Arpeggio_engraver, stem);
+ADD_ACKNOWLEDGER (Arpeggio_engraver, rhythmic_head);
+
+ADD_TRANSLATOR (Arpeggio_engraver,
+ /* doc */
+ "Generate an Arpeggio symbol.",
+
+ /* create */
+ "Arpeggio",
-ADD_THIS_TRANSLATOR (Arpeggio_engraver);
+ /* read */
+ "",
+ /* write */
+ ""
+ );