source file of the GNU LilyPond music typesetter
- (c) 2000 Jan Nieuwenhuizen <janneke@gnu.org>
+ (c) 2000--2004 Jan Nieuwenhuizen <janneke@gnu.org>
*/
#include "engraver.hh"
#include "group-interface.hh"
#include "item.hh"
+#include "event.hh"
#include "arpeggio.hh"
#include "stem.hh"
+#include "rhythmic-head.hh"
+#include "side-position-interface.hh"
+#include "note-column.hh"
class Arpeggio_engraver : public Engraver
{
public:
- VIRTUAL_COPY_CONS (Translator);
- Arpeggio_engraver ();
-
+ TRANSLATOR_DECLARATIONS(Arpeggio_engraver);
protected:
- virtual void acknowledge_element (Score_element_info);
- virtual void process_acknowledged ();
- virtual void do_pre_move_processing ();
+ virtual void acknowledge_grob (Grob_info);
+ virtual void process_music ();
+
+ virtual void stop_translation_timestep ();
+ virtual bool try_music (Music *);
private:
Item* arpeggio_;
- Link_array <Score_element> stems_;
+ Music *arpeggio_req_;
};
Arpeggio_engraver::Arpeggio_engraver ()
{
arpeggio_ = 0;
+ arpeggio_req_ = 0;
}
-void
-Arpeggio_engraver::acknowledge_element (Score_element_info info)
+bool
+Arpeggio_engraver::try_music (Music* m)
{
- if (Stem::has_interface (info.elem_l_))
+ if (!arpeggio_req_)
{
- stems_.push (info.elem_l_);
+ arpeggio_req_ = m;
}
+ return true;
}
void
-Arpeggio_engraver::process_acknowledged ()
+Arpeggio_engraver::acknowledge_grob (Grob_info info)
{
- if (!arpeggio_ && !stems_.empty ())
+ if (arpeggio_)
{
- arpeggio_ = new Item (get_property ("Arpeggio"));
- Pointer_group_interface pgi (arpeggio_, "stems");
- for (int i = 0; i < stems_.size (); i++)
+ 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_ ))
{
- pgi.add_element (stems_[i]);
- arpeggio_->add_dependency (stems_[i]);
+ info.grob_->set_grob_property ("arpeggio", arpeggio_->self_scm ());
}
- announce_element (arpeggio_, 0);
}
}
void
-Arpeggio_engraver::do_pre_move_processing ()
+Arpeggio_engraver::process_music ()
+{
+ if (arpeggio_req_)
+ {
+ arpeggio_ = make_item ("Arpeggio");
+ announce_grob(arpeggio_, arpeggio_req_->self_scm());
+ }
+}
+
+void
+Arpeggio_engraver::stop_translation_timestep ()
{
if (arpeggio_)
{
- typeset_element (arpeggio_);
+ typeset_grob (arpeggio_);
arpeggio_ = 0;
}
- stems_.clear ();
+ arpeggio_req_ = 0;
}
-ADD_THIS_TRANSLATOR (Arpeggio_engraver);
+
+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 */ "");