2 key-engraver.cc -- implement Key_engraver
4 source file of the GNU LilyPond music typesetter
6 (c) 1997--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
10 #include "command-request.hh"
11 #include "musical-request.hh"
14 #include "timing-translator.hh"
15 #include "staff-symbol-referencer.hh"
16 #include "translator-group.hh"
17 #include "engraver.hh"
19 #include "protected-scm.hh"
23 Make the key signature.
25 class Key_engraver : public Engraver
27 void create_key(bool);
28 void read_req (Key_change_req const * r);
33 VIRTUAL_COPY_CONS(Translator);
35 Key_change_req * keyreq_l_;
37 Protected_scm old_accs_; // ugh. -> property
40 virtual void do_creation_processing();
41 virtual void do_removal_processing ();
42 virtual bool do_try_music (Music *req_l);
43 void deprecated_process_music();
44 virtual void do_pre_move_processing();
45 virtual void do_post_move_processing();
46 virtual void process_acknowledged ();
47 virtual void acknowledge_element (Score_element_info);
52 Key_engraver::do_removal_processing ()
54 old_accs_ = SCM_EOL; // unprotect can not be called from dtor.
57 Key_engraver::Key_engraver ()
64 Key_engraver::create_key (bool def)
68 item_p_ = new Item (get_property ("KeySignature"));
70 item_p_->set_elt_property ("c0-position", gh_int2scm (0));
72 // todo: put this in basic props.
73 item_p_->set_elt_property ("old-accidentals", old_accs_);
74 item_p_->set_elt_property ("new-accidentals", get_property ("keySignature"));
76 Staff_symbol_referencer::set_interface (item_p_);
77 Key_item::set_interface (item_p_);
79 SCM prop = get_property ("keyOctaviation");
80 bool multi = to_boolean (prop);
83 item_p_->set_elt_property ("multi-octave", gh_bool2scm (multi));
85 announce_element (item_p_,keyreq_l_);
91 SCM vis = get_property ("explicitKeySignatureVisibility");
92 if (gh_procedure_p (vis))
93 item_p_->set_elt_property ("visibility-lambda",vis);
99 Key_engraver::do_try_music (Music * req_l)
101 if (Key_change_req *kc = dynamic_cast <Key_change_req *> (req_l))
104 warning (_ ("FIXME: key change merge"));
106 read_req (keyreq_l_);
113 Key_engraver::acknowledge_element (Score_element_info info)
115 if (Clef::has_interface (info.elem_l_))
117 SCM c = get_property ("createKeyOnClefChange");
123 else if (Bar::has_interface (info.elem_l_)
124 && gh_pair_p (get_property ("keySignature")))
132 Key_engraver::process_acknowledged ()
134 deprecated_process_music ();
138 Key_engraver::deprecated_process_music ()
140 if (keyreq_l_ || old_accs_ != get_property ("keySignature"))
147 Key_engraver::do_pre_move_processing ()
151 typeset_element (item_p_);
157 Key_engraver::read_req (Key_change_req const * r)
159 SCM p = r->get_mus_property ("pitch-alist");
163 SCM n = scm_list_copy (p);
165 for (SCM s = get_property ("keyAccidentalOrder");
166 gh_pair_p (s); s = gh_cdr (s))
168 if (gh_pair_p (scm_member (gh_car (s), n)))
170 accs = gh_cons (gh_car (s), accs);
171 n = scm_delete_x (gh_car (s), n);
174 for (SCM s = n ; gh_pair_p (s); s = gh_cdr (s))
175 if (gh_scm2int (gh_cdar (s)))
176 accs = gh_cons (gh_car (s), accs);
178 old_accs_ = get_property ("keySignature");
179 daddy_trans_l_->set_property ("keySignature", accs);
183 Key_engraver::do_post_move_processing ()
186 old_accs_ = get_property ("keySignature");
190 Key_engraver::do_creation_processing ()
192 daddy_trans_l_->set_property ("keySignature", SCM_EOL);
197 ADD_THIS_TRANSLATOR (Key_engraver);