2 chord-name-engraver.cc -- implement Chord_name_engraver
4 source file of the GNU LilyPond music typesetter
6 (c) 1998 Jan Nieuwenhuizen <janneke@gnu.org>
9 #include "chord-name-engraver.hh"
10 #include "musical-request.hh"
11 #include "text-item.hh"
12 #include "paper-def.hh"
14 #include "paper-def.hh"
16 #include "dimensions.hh"
18 ADD_THIS_TRANSLATOR (Chord_name_engraver);
20 Chord_name_engraver::Chord_name_engraver ()
25 Chord_name_engraver::acknowledge_element (Score_element_info i)
27 if (Note_req* n = dynamic_cast<Note_req*> (i.req_l_))
28 pitch_arr_.push (n->pitch_);
32 Chord_name_engraver::do_try_music (Music* m)
34 if (Note_req* n = dynamic_cast<Note_req*> (m))
36 pitch_arr_.push (n->pitch_);
43 Chord_name_engraver::do_process_requests ()
45 if (text_p_arr_.size ())
47 if (!pitch_arr_.size ())
51 Banter style chord names (almost).
53 - move this stuff to new Item class Chord_name
54 - switch on property, add american (?) chordNameStyle
56 Scalar chordNameStyle = get_property ("chordNameStyle");
57 if (chordNameStyle == "Banter")
58 chord = pitches_to_banter (pitch_arr_));
62 Scalar style = get_property ("textstyle");
63 Scalar alignment = get_property ("textalignment");
64 Text_def* text_p = new Text_def;
65 text_p->align_dir_ = LEFT;
66 if (style.length_i ())
67 text_p->style_str_ = style;
68 if (alignment.isnum_b())
69 text_p->align_dir_= (Direction)(int)alignment;
73 find tonic: after longest line of triads
77 Scalar chord_inversions = get_property ("chordInversion");
78 if (chord_inversions.to_bool ())
81 for (int i = 0; i < pitch_arr_.size (); i++)
82 for (int j = 0; j < pitch_arr_.size (); j++)
84 int gap = pitch_arr_[(i + j + 1) % pitch_arr_.size ()].notename_i_
85 - pitch_arr_[(i + j) % pitch_arr_.size ()].notename_i_;
102 for (int i = 0; i < pitch_arr_.size (); i++)
104 int gap = pitch_arr_[i].notename_i_
105 - pitch_arr_[(i - 1 + pitch_arr_.size ())
106 % pitch_arr_.size ()].notename_i_;
118 Musical_pitch inversion = pitch_arr_[0];
121 Musical_pitch last (0, 0, -5);
122 Array<Musical_pitch> pitches;
123 for (int i = 0; i < pitch_arr_.size (); i++)
125 Musical_pitch p = pitch_arr_[(tonic_i + i) % pitch_arr_.size ()];
128 p.octave_i_ = last.octave_i_;
135 pitch_arr_ = pitches;
138 Musical_pitch tonic = pitch_arr_[0];
140 Array<Musical_pitch> scale;
141 scale.push (Musical_pitch (0)); // c
142 scale.push (Musical_pitch (1)); // d
143 scale.push (Musical_pitch (2)); // e
144 scale.push (Musical_pitch (3)); // f
145 scale.push (Musical_pitch (4)); // g
146 scale.push (Musical_pitch (5)); // a
147 // 7 always means 7-...
148 scale.push (Musical_pitch (6, -1)); // b
151 for (int i = 0; i < scale.size (); i++)
152 scale[i].transpose (tonic);
154 //urg, should do translation in scheme.
155 char const *acc[] = {"\\textflat\\textflat ", "\\textflat ", "", "\\textsharp " , "\\textsharp\\textsharp "};
156 String tonic_str = tonic.str ();
157 tonic_str = tonic_str.left_str (1).upper_str ()
158 + acc[tonic.accidental_i_ + 2];
162 for (int i=1; i < pitch_arr_.size (); i++)
164 Musical_pitch p = pitch_arr_[i];
165 int trap = p.notename_i_ - tonic.notename_i_
166 + (p.octave_i_ - tonic.octave_i_) * 7 + 1;
167 int accidental = p.accidental_i_ - scale[(trap - 1) % 7].accidental_i_;
168 if ((trap == 3) && (accidental == -1))
169 tonic_str += "m"; // hmm
170 else if (accidental || (!(trap % 2) || ((i + 1 == pitch_arr_.size ()) && (trap > 5))))
173 if ((trap == 7) && (accidental == 1))
177 add_str += to_str (trap);
179 add_str += accidental < 0 ? "-" : "+";
185 String inversion_str;
188 inversion_str = inversion.str ();
189 inversion_str = "/" + inversion_str.left_str (1).upper_str ()
190 + acc[tonic.accidental_i_ + 2];
193 text_p->text_str_ = tonic_str + "$^{" + add_str + "}$" + inversion_str;
194 Text_item* item_p = new Text_item (text_p);
196 item_p->fat_b_ = true;
197 text_p_arr_.push (item_p);
198 announce_element (Score_element_info (item_p, 0));
202 Chord_name_engraver::do_pre_move_processing ()
204 for (int i=0; i < text_p_arr_.size (); i++)
206 typeset_element (text_p_arr_[i]);
208 text_p_arr_.clear ();