2 engraver-group-engraver.cc -- implement Engraver_group_engraver
4 source file of the GNU LilyPond music typesetter
6 (c) 1997--2003 Han-Wen Nienhuys <hanwen@cs.uu.nl>
9 #include "flower-proto.hh"
10 #include "engraver-group-engraver.hh"
11 #include "engraver.hh"
13 #include "paper-score.hh"
17 Engraver_group_engraver::announce_grob (Grob_info info)
19 announce_infos_.push (info);
20 Engraver::announce_grob (info);
24 Engraver_group_engraver::process_acknowledged_grobs_in_simple_children ()
26 for (SCM p = get_simple_trans_list (); gh_pair_p (p); p = ly_cdr (p))
28 Translator * t = unsmob_translator (ly_car (p));
29 Engraver * eng = dynamic_cast<Engraver*> (t);
31 eng->process_acknowledged_grobs ();
35 SCM find_acknowledge_engravers (SCM gravlist, SCM meta);
36 SCM find_accept_engravers (SCM gravlist, SCM music_descr);
39 Engraver_group_engraver::acknowledge_grobs ()
41 if (!announce_infos_.size ())
44 SCM tab = get_property ("acknowledgeHashTable");
45 SCM name_sym = ly_symbol2scm ("name");
46 SCM meta_sym = ly_symbol2scm ("meta");
49 for (int j =0; j < announce_infos_.size (); j++)
51 Grob_info info = announce_infos_[j];
53 SCM meta = info.grob_->internal_get_grob_property (meta_sym);
54 SCM nm = scm_assoc (name_sym, meta);
60 it's tempting to put an assert for
61 immutable_property_alist_ == '(), but in fact, some
62 engravers (clef-engraver) add some more information to the
63 immutable_property_alist_ (after it has been '()-ed).
65 We ignore the grob anyway. He who has no name, shall not
71 SCM acklist = scm_hashq_ref (tab, nm, SCM_UNDEFINED);
72 if (acklist == SCM_BOOL_F)
74 acklist = find_acknowledge_engravers (gh_cons (self_scm (), get_simple_trans_list ()), meta);
75 scm_hashq_set_x (tab, nm, acklist);
78 for (SCM p = acklist; gh_pair_p (p); p = ly_cdr (p))
80 Translator * t = unsmob_translator (ly_car (p));
81 Engraver * eng = dynamic_cast<Engraver*> (t);
82 if (eng && eng!= info.origin_trans_)
83 eng->acknowledge_grob (info);
89 Engraver_group_engraver::do_announces ()
91 for (SCM p = trans_group_list_; gh_pair_p (p); p =ly_cdr (p))
93 Translator * t = unsmob_translator (ly_car (p));
94 dynamic_cast<Engraver_group_engraver*> (t)->do_announces ();
97 process_acknowledged_grobs_in_simple_children ();
101 acknowledge_grobs ();
102 announce_infos_.clear ();
103 process_acknowledged_grobs_in_simple_children ();
105 while (announce_infos_.size ());
111 order is : top to bottom (as opposed to do_announces)
114 Engraver_group_engraver::process_music ()
116 for (SCM p = get_simple_trans_list (); gh_pair_p (p); p =ly_cdr (p))
118 Translator * t = unsmob_translator (ly_car (p));
119 Engraver * eng = dynamic_cast<Engraver*> (t);
122 eng->process_music ();
124 for (SCM p = trans_group_list_; gh_pair_p (p); p =ly_cdr (p))
126 Translator * t = unsmob_translator (ly_car (p));
127 Engraver*eng = dynamic_cast<Engraver*> (t);
129 eng->process_music ();
134 Engraver_group_engraver::initialize ()
140 SCM tab = scm_make_vector (gh_int2scm (61), SCM_BOOL_F);
141 set_property ("acknowledgeHashTable", tab);
143 Translator_group::initialize ();
146 Engraver_group_engraver::Engraver_group_engraver() {}
148 ENTER_DESCRIPTION(Engraver_group_engraver,
149 /* descr */ "A group of engravers taken together",
162 engraver_valid (Translator*tr, SCM ifaces)
164 SCM ack_ifs = scm_assoc (ly_symbol2scm ("interfaces-acked"), tr->translator_description());
165 ack_ifs = gh_cdr (ack_ifs);
166 for (SCM s = ifaces; ly_pair_p (s); s = ly_cdr (s))
167 if (scm_memq (ly_car (s), ack_ifs) != SCM_BOOL_F)
175 find_acknowledge_engravers (SCM gravlist, SCM meta_alist)
177 SCM ifaces = gh_cdr (scm_assoc (ly_symbol2scm ("interfaces"), meta_alist));
180 for (SCM s = gravlist; ly_pair_p (s); s = ly_cdr (s))
182 Translator* tr = unsmob_translator (ly_car (s));
183 if (engraver_valid (tr, ifaces))
184 l = scm_cons (tr->self_scm (), l);
186 l = scm_reverse_x (l, SCM_EOL);