2 engravergroup.cc -- implement Engraver_group_engraver
4 source file of the GNU LilyPond music typesetter
6 (c) 1997--2001 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_info_arr_.push (info);
20 Engraver::announce_grob (info);
25 Engraver_group_engraver::create_grobs ()
28 for (SCM p = simple_trans_list_; gh_pair_p (p); p = ly_cdr (p))
30 Translator * t = unsmob_translator (ly_car (p));
31 Engraver * eng = dynamic_cast<Engraver*> (t);
37 SCM find_acknowledge_engravers (SCM gravlist, SCM meta);
39 Engraver_group_engraver::acknowledge_grobs ()
41 if (!announce_info_arr_.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_info_arr_.size (); j++)
51 Grob_info info = announce_info_arr_[j];
53 SCM meta = info.grob_l_->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 (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_l_)
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 ();
99 while (announce_info_arr_.size ())
101 acknowledge_grobs ();
102 announce_info_arr_.clear ();
107 #include <iostream.h>
110 order is : top to bottom (as opposed to do_announces)
113 Engraver_group_engraver::process_music ()
115 for (SCM p = simple_trans_list_; gh_pair_p (p); p =ly_cdr (p))
117 Translator * t = unsmob_translator (ly_car (p));
118 Engraver * eng = dynamic_cast<Engraver*> (t);
121 eng->process_music ();
123 for (SCM p = trans_group_list_; gh_pair_p (p); p =ly_cdr (p))
125 Translator * t = unsmob_translator (ly_car (p));
126 Engraver*eng = dynamic_cast<Engraver*> (t);
128 eng->process_music ();
132 void find_all_acknowledge_engravers (SCM tab, SCM gravlist, SCM allgrobs);
135 Engraver_group_engraver::initialize ()
137 SCM tab = scm_make_vector (gh_int2scm (61), SCM_BOOL_F); // magic ->
138 set_property ("acknowledgeHashTable", tab);
140 Translator_group::initialize ();
143 Engraver_group_engraver::Engraver_group_engraver() {}
145 ENTER_DESCRIPTION(Engraver_group_engraver,
146 /* descr */ "A group of engravers taken together",
148 /* acks */ "grob-interface",
157 bool engraver_valid (Translator*tr, SCM ifaces)
159 SCM ack_ifs = scm_assoc (ly_symbol2scm ("interfaces-acked"), tr->translator_description());
160 ack_ifs = gh_cdr (ack_ifs);
161 for (SCM s = ifaces; ly_pair_p (s); s = ly_cdr (s))
162 if (scm_memq (ly_car (s), ack_ifs) != SCM_BOOL_F)
169 find_acknowledge_engravers (SCM gravlist, SCM meta_alist)
171 SCM ifaces = gh_cdr (scm_assoc (ly_symbol2scm ("interfaces"), meta_alist));
174 for (SCM s = gravlist; ly_pair_p (s); s = ly_cdr (s))
176 Translator* tr = unsmob_translator (ly_car (s));
177 if (engraver_valid (tr, ifaces))
178 l = scm_cons (tr->self_scm (), l);
180 l = scm_reverse_x (l, SCM_EOL);