-/*
+/*
ligature-engraver.hh -- declare Ligature_engraver
-
+
source file of the GNU LilyPond music typesetter
-
- (c) 2002--2004 Juergen Reuter <reuter@ipd.uka.de>
-
- */
+
+ (c) 2002--2008 Juergen Reuter <reuter@ipd.uka.de>
+*/
+
#ifndef LIGATURE_ENGRAVER_HH
#define LIGATURE_ENGRAVER_HH
#include "engraver.hh"
-
-/*
- * FIXME: Spanner *create_ligature_spanner () and virtual void
- * typeset_ligature (...) are abstract methods, such that we would
- * like to declare them abstract:
- *
- * virtual Spanner *create_ligature_spanner () = 0;
- * virtual void typeset_ligature (...) = 0;
- *
- * Unfortunately, clone_const_helper() (as expanded from the
- * TRANSLATOR_DECLARATIONS macro) requires this class to be
- * instantiatable, such that it may not have any abstract virtual
- * functions. As a workaround, the actually abstract methods are
- * implemented, but produce a programming_error whenever called. --jr
- */
+#include "moment.hh"
class Ligature_engraver : public Engraver
{
protected:
- virtual void stop_translation_timestep ();
+ Ligature_engraver ();
+ void stop_translation_timestep ();
virtual void finalize ();
- virtual void acknowledge_grob (Grob_info);
- virtual bool try_music (Music*);
- virtual void process_music ();
- virtual Spanner *create_ligature_spanner (); /* abstract method */
+ DECLARE_ACKNOWLEDGER (rest);
+ DECLARE_ACKNOWLEDGER (note_head);
+ virtual void listen_ligature (Stream_event *ev);
+ void process_music ();
+ virtual Spanner *create_ligature_spanner () = 0;
virtual void typeset_ligature (Spanner *ligature,
- Array<Grob_info> primitives); /* abstract method */
+ vector<Grob_info> primitives) = 0;
virtual Spanner *current_ligature ();
SCM brew_ligature_primitive_proc;
public:
- TRANSLATOR_DECLARATIONS(Ligature_engraver);
+ // no TRANSLATOR_DECLARATIONS (Ligature_engraver) needed since this
+ // class is abstract
private:
- Drul_array<Music*> reqs_drul_;
-
+ Drul_array<Stream_event *> events_drul_;
+
Spanner *ligature_;
- Array<Grob_info> primitives_;
+ vector<Grob_info> primitives_;
Spanner *finished_ligature_;
- Array<Grob_info> finished_primitives_;
+ vector<Grob_info> finished_primitives_;
- Music *prev_start_req_;
+ Stream_event *prev_start_event_;
// moment where ligature started.
Moment ligature_start_mom_;
Grob *last_bound_;
-
- void override_stencil_callback ();
- void revert_stencil_callback ();
};
#endif // LIGATURE_ENGRAVER_HH