-/*
+/*
arpeggio-engraver.cc -- implement Arpeggio_engraver
-
+
source file of the GNU LilyPond music typesetter
-
- (c) 2000--2004 Jan Nieuwenhuizen <janneke@gnu.org>
- */
+
+ (c) 2000--2008 Jan Nieuwenhuizen <janneke@gnu.org>
+*/
#include "engraver.hh"
-#include "group-interface.hh"
-#include "item.hh"
-#include "event.hh"
+
+#include "pointer-group-interface.hh"
#include "arpeggio.hh"
#include "stem.hh"
#include "rhythmic-head.hh"
#include "side-position-interface.hh"
+#include "stream-event.hh"
#include "note-column.hh"
+#include "item.hh"
+
+#include "translator.icc"
class Arpeggio_engraver : public Engraver
{
public:
- TRANSLATOR_DECLARATIONS (Arpeggio_engraver);
-protected:
- virtual void acknowledge_grob (Grob_info);
- virtual void process_music ();
-
- virtual void stop_translation_timestep ();
- virtual bool try_music (Music *);
+ TRANSLATOR_DECLARATIONS (Arpeggio_engraver);
+ void acknowledge_stem (Grob_info);
+ void acknowledge_rhythmic_head (Grob_info);
+protected:
+ void process_music ();
+ void stop_translation_timestep ();
+ DECLARE_TRANSLATOR_LISTENER (arpeggio);
private:
- Item* arpeggio_;
- Music *arpeggio_req_;
+ 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_)
- {
- arpeggio_req_ = m;
- }
- return true;
+ ASSIGN_EVENT_ONCE (arpeggio_event_, ev);
}
void
-Arpeggio_engraver::acknowledge_grob (Grob_info info)
+Arpeggio_engraver::acknowledge_stem (Grob_info info)
{
if (arpeggio_)
{
- if (Stem::has_interface (info.grob_))
- {
- if (!arpeggio_->get_parent (Y_AXIS))
- arpeggio_->set_parent (info.grob_, Y_AXIS);
-
- Pointer_group_interface::add_grob (arpeggio_, ly_symbol2scm ("stems"), info.grob_);
- }
-
- /*
- We can't catch local key items (accidentals) from Voice context,
- see Local_key_engraver
- */
- else if (Rhythmic_head::has_interface (info.grob_))
- {
- Side_position_interface::add_support (arpeggio_, info.grob_);
- }
- else if (Note_column::has_interface (info.grob_ ))
- {
- info.grob_->set_property ("arpeggio", arpeggio_->self_scm ());
- }
+ 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::process_music ()
{
- if (arpeggio_req_)
+ if (arpeggio_event_)
{
- arpeggio_ = make_item ("Arpeggio");
- announce_grob (arpeggio_, arpeggio_req_->self_scm ());
+ arpeggio_ = make_item ("Arpeggio", arpeggio_event_->self_scm ());
}
}
void
Arpeggio_engraver::stop_translation_timestep ()
{
- if (arpeggio_)
- {
- typeset_grob (arpeggio_);
- arpeggio_ = 0;
- }
- arpeggio_req_ = 0;
+ 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",
+ /* read */
+ "",
-ENTER_DESCRIPTION (Arpeggio_engraver,
-/* descr */ "Generate an Arpeggio from a Arpeggio_req",
-/* creats*/ "Arpeggio",
-/* accepts */ "arpeggio-event",
-/* acks */ "stem-interface rhythmic-head-interface note-column-interface",
-/* reads */ "",
-/* write */ "");
+ /* write */
+ ""
+ );