2 clef.cc -- implement Clef_engraver
4 source file of the GNU LilyPond music typesetter
6 (c) 1997--1999 Han-Wen Nienhuys <hanwen@cs.uu.nl>,
8 Mats Bengtsson <matsb@s3.kth.se>
17 #include "clef-engraver.hh"
18 #include "clef-item.hh"
20 #include "command-request.hh"
21 #include "timing-translator.hh"
22 #include "note-head.hh"
23 #include "key-item.hh"
24 #include "local-key-item.hh"
26 Clef_engraver::Clef_engraver()
34 create_default_b_ = true;
38 Clef_engraver::set_type (String s)
40 if (s.right_str(2) == "_8") // Down one octave
43 s = s.left_str(s.length_i() - 2);
45 else if (s.right_str(2) == "^8") // Up one octave
48 s = s.left_str(s.length_i() - 2);
54 SCM c = get_property ("supportedClefTypes",0);
55 for (; gh_pair_p(c); c = gh_cdr (c))
57 SCM entry = gh_car (c);
58 SCM name = gh_car (entry);
60 if (ly_scm2string (name) != s)
63 SCM glyph = gh_cadr (entry);
64 SCM pos = gh_caddr (entry);
66 clef_type_str_ = ly_scm2string (glyph);
67 clef_position_i_ = gh_scm2int (pos);
74 switch(toupper (s[0]))
77 clef_type_str_ = "bass";
80 clef_type_str_ = "treble";
83 clef_type_str_ = "alto";
88 clef_position_i_ = 2 * (s[1] - '0') - 6;
91 if (clef_type_str_ == "treble")
92 c0_position_i_ = clef_position_i_ - 4;
93 else if (clef_type_str_ == "alto")
94 c0_position_i_ = clef_position_i_;
95 else if (clef_type_str_ == "bass")
96 c0_position_i_ = clef_position_i_ + 4;
100 c0_position_i_ -= (int) octave_dir_ * 7;
107 Generate a clef at the start of a measure. (when you see a Bar,
111 Clef_engraver::acknowledge_element (Score_element_info info)
113 if (dynamic_cast<Bar*>(info.elem_l_)
114 && clef_type_str_.length_i())
116 bool default_clef = !clef_p_;
119 clef_p_->set_elt_property("visibility-lambda",
120 ly_eval_str ("all-visibility"));
123 /* ugh; should make Clef_referenced baseclass */
124 Item * it_l =dynamic_cast <Item *> (info.elem_l_);
127 if (Note_head * h = dynamic_cast<Note_head*>(it_l))
129 h->set_position (int (h->position_f ()) + c0_position_i_);
131 else if (Local_key_item *i = dynamic_cast<Local_key_item*> (it_l))
133 i->c0_position_i_ =c0_position_i_;
135 else if (Key_item *k = dynamic_cast<Key_item*>(it_l))
137 k-> set_c_position (c0_position_i_);
143 Clef_engraver::do_creation_processing()
145 create_default_b_ = true; // should read property.
146 SCM def = get_property ("createInitdefaultClef", 0);
147 if (gh_string_p (def))
148 set_type (ly_scm2string (def));
150 if (clef_type_str_.length_i ())
153 clef_p_->set_elt_property ("non-default", SCM_BOOL_T);
158 Clef_engraver::do_try_music (Music * r_l)
160 if (Clef_change_req *cl = dynamic_cast <Clef_change_req *> (r_l))
163 if (!set_type (cl->clef_str_))
164 cl->error (_ ("unknown clef type"));
174 Clef_engraver::create_clef()
178 Clef_item *c= new Clef_item;
179 c->set_elt_property ("break-aligned", SCM_BOOL_T);
180 announce_element (Score_element_info (c, clef_req_l_));
184 clef_p_->symbol_ = clef_type_str_;
185 clef_p_->set_position(clef_position_i_);
188 clef_p_->set_elt_property ("octave-dir", gh_int2scm (octave_dir_));
194 Clef_engraver::do_process_requests()
200 else if (create_default_b_)
202 SCM type = get_property ("defaultClef", 0);
203 if (gh_string_p (type))
204 set_type (ly_scm2string (type));
206 set_type ( "treble");
208 create_default_b_ = false;
213 Clef_engraver::do_pre_move_processing()
217 typeset_element (clef_p_);
220 create_default_b_ = false;
224 Clef_engraver::do_post_move_processing()
230 Clef_engraver::do_removal_processing()
237 ADD_THIS_TRANSLATOR(Clef_engraver);