2 engraver.hh -- declare Engraver
4 source file of the GNU LilyPond music typesetter
6 (c) 1996--2005 Han-Wen Nienhuys <hanwen@cs.uu.nl>
13 #include "grob-info.hh"
14 #include "translator.hh"
17 a struct which processes events, and creates the #Grob#s.
18 It may use derived classes.
20 class Engraver : public virtual Translator
23 friend class Engraver_group_engraver;
26 take note of item/spanner
27 put item in spanner. Adjust local key; etc.
29 Default: ignore the info
31 virtual void acknowledge_grob (Grob_info) {}
33 /** Do things with stuff found in acknowledge_grob. Ugh. Should
34 be looped with acknowledge_grob.
37 virtual void process_acknowledged_grobs () {}
39 virtual void announce_grob (Grob_info);
40 Engraver_group_engraver *get_daddy_engraver () const;
44 Announce element. Default: pass on to daddy. Utility
46 void announce_grob (Grob *, SCM cause);
48 Score_engraver *get_score_engraver () const;
52 TRANSLATOR_DECLARATIONS (Engraver);
55 #define make_item(x, cause) make_item_from_properties (this, ly_symbol2scm (x), cause, x)
56 #define make_spanner(x, cause) make_spanner_from_properties (this, ly_symbol2scm (x), cause, x)
57 Item *make_item_from_properties (Engraver *tg, SCM x, SCM cause, const char *name);
58 Spanner *make_spanner_from_properties (Engraver *tg, SCM x, SCM cause, const char *name);