-/*
+/*
note-head-line-engraver.cc -- implement Note_head_line_engraver
-
+
source file of the GNU LilyPond music typesetter
-
- (c) 2000--2004 Jan Nieuwenhuizen <janneke@gnu.org>
- */
+
+ (c) 2000--2007 Jan Nieuwenhuizen <janneke@gnu.org>
+*/
#include "engraver.hh"
-#include "group-interface.hh"
-#include "item.hh"
-#include "event.hh"
-#include "spanner.hh"
+#include "pointer-group-interface.hh"
#include "stem.hh"
#include "rhythmic-head.hh"
#include "side-position-interface.hh"
#include "staff-symbol-referencer.hh"
#include "context.hh"
+#include "spanner.hh"
+#include "item.hh"
/**
TODO: have the line commit suicide if the notes are connected with
either slur or beam.
-
*/
class Note_head_line_engraver : public Engraver
{
TRANSLATOR_DECLARATIONS (Note_head_line_engraver);
protected:
- virtual void acknowledge_grob (Grob_info);
- virtual void process_acknowledged_grobs ();
- virtual void stop_translation_timestep ();
+ DECLARE_ACKNOWLEDGER (rhythmic_head);
+ void process_acknowledged ();
+ void stop_translation_timestep ();
private:
- Spanner* line_;
- Context* last_staff_;
+ Spanner *line_;
+ Context *last_staff_;
bool follow_;
- Grob* head_;
- Grob* last_head_;
+ Grob *head_;
+ Grob *last_head_;
};
Note_head_line_engraver::Note_head_line_engraver ()
}
void
-Note_head_line_engraver::acknowledge_grob (Grob_info info)
+Note_head_line_engraver::acknowledge_rhythmic_head (Grob_info info)
{
- if (Rhythmic_head::has_interface (info.grob_))
+ head_ = info.grob ();
+ if (to_boolean (get_property ("followVoice")))
{
- head_ = info.grob_;
- if (to_boolean (get_property ("followVoice")))
+ Context *tr = context ();
+ while (tr && !tr->is_alias (ly_symbol2scm ("Staff")))
+ tr = tr->get_parent_context ();
+
+ if (tr
+ && tr->is_alias (ly_symbol2scm ("Staff")) && tr != last_staff_)
{
- Context * tr = context ();
- while (tr && !tr->is_alias (ly_symbol2scm ( "Staff")))
- tr = tr->get_parent_context () ;
-
- if (tr
- && tr->is_alias (ly_symbol2scm ("Staff")) && tr != last_staff_)
- {
- if (last_head_)
- follow_ = true;
- last_staff_ = tr;
- }
+ if (last_head_)
+ follow_ = true;
+ last_staff_ = tr;
}
}
}
-
void
-Note_head_line_engraver::process_acknowledged_grobs ()
+Note_head_line_engraver::process_acknowledged ()
{
if (!line_ && follow_ && last_head_ && head_)
{
/* TODO: Don't follow if there's a beam.
- We can't do beam-stuff here, since beam doesn't exist yet.
- Should probably store follow_ in line_, and suicide at some
- later point */
+ We can't do beam-stuff here, since beam doesn't exist yet.
+ Should probably store follow_ in line_, and suicide at some
+ later point */
if (follow_)
line_ = make_spanner ("VoiceFollower", head_->self_scm ());
-
+
line_->set_bound (LEFT, last_head_);
line_->set_bound (RIGHT, head_);
-
follow_ = false;
}
head_ = 0;
}
+#include "translator.icc"
-
-
-ENTER_DESCRIPTION (Note_head_line_engraver,
-/* descr */ "Engrave a line between two note heads, for example a glissando. If "
-" followVoice is set, staff switches also generate a line.",
-/* creats*/ "Glissando VoiceFollower",
-/* accepts */ "glissando-event",
-/* acks */ "rhythmic-head-interface",
-/* reads */ "followVoice",
-/* write */ "");
+ADD_ACKNOWLEDGER (Note_head_line_engraver, rhythmic_head);
+ADD_TRANSLATOR (Note_head_line_engraver,
+ /* doc */ "Engrave a line between two note heads, for example a glissando. If "
+ " followVoice is set, staff switches also generate a line.",
+ /* create */ "Glissando VoiceFollower",
+ /* read */ "followVoice",
+ /* write */ "");