Rationalize string number handling for notes and chords
[lilypond/mpolesky.git] / lily / tab-note-heads-engraver.cc
blob91a3ba3fc701cd7e2c754a9feb1206196627f496
1 /*
2 This file is part of LilyPond, the GNU music typesetter.
4 Copyright (C) 2002--2010 Han-Wen Nienhuys, Jean-Baptiste Lamy <jiba@tuxfamily.org>,
6 LilyPond is free software: you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation, either version 3 of the License, or
9 (at your option) any later version.
11 LilyPond is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
20 #include <cctype>
21 #include <cstdio>
23 #include "engraver.hh"
25 using namespace std;
27 #include "articulations.hh"
28 #include "duration.hh"
29 #include "item.hh"
30 #include "output-def.hh"
31 #include "pitch.hh"
32 #include "rhythmic-head.hh"
33 #include "stream-event.hh"
34 #include "warn.hh"
35 #include "context.hh"
37 #include "translator.icc"
39 /**
40 make (guitar-like) tablature note
42 class Tab_note_heads_engraver : public Engraver
44 vector<Item *> notes_;
46 vector<Stream_event *> note_events_;
47 vector<Stream_event *> tabstring_events_;
48 public:
49 TRANSLATOR_DECLARATIONS (Tab_note_heads_engraver);
51 protected:
52 DECLARE_TRANSLATOR_LISTENER (note);
53 DECLARE_TRANSLATOR_LISTENER (string_number);
54 void process_music ();
56 void stop_translation_timestep ();
59 Tab_note_heads_engraver::Tab_note_heads_engraver ()
63 IMPLEMENT_TRANSLATOR_LISTENER (Tab_note_heads_engraver, note);
64 void
65 Tab_note_heads_engraver::listen_note (Stream_event *ev)
67 note_events_.push_back (ev);
70 IMPLEMENT_TRANSLATOR_LISTENER (Tab_note_heads_engraver, string_number);
71 void
72 Tab_note_heads_engraver::listen_string_number (Stream_event *ev)
74 tabstring_events_.push_back (ev);
77 void
78 Tab_note_heads_engraver::process_music ()
80 SCM tab_strings = articulation_list (note_events_,
81 tabstring_events_,
82 "string-number-event");
83 SCM tab_notes = ly_cxx_vector_to_list (note_events_);
84 SCM proc = get_property ("noteToFretFunction");
85 SCM string_fret_finger = SCM_EOL;
86 if (ly_is_procedure (proc))
87 string_fret_finger = scm_call_3 (proc,
88 context ()->self_scm (),
89 tab_notes,
90 tab_strings);
91 SCM note_entry = SCM_EOL;
92 SCM string_number = SCM_EOL;
93 SCM fret = SCM_EOL;
94 SCM fret_label = SCM_EOL;
95 SCM fret_procedure = get_property ("tablatureFormat");
96 SCM staff_line_procedure = get_property ("tabStaffLineLayoutFunction");
97 SCM staff_position = SCM_EOL;
98 vsize fret_count = (vsize) scm_ilength (string_fret_finger);
99 bool length_changed = (note_events_.size () != fret_count);
100 vsize index;
102 if (string_fret_finger != SCM_EOL)
103 for (vsize i = 0; i < fret_count; i++)
105 note_entry = scm_list_ref (string_fret_finger, scm_from_int (i));
106 string_number = scm_car (note_entry);
107 fret = scm_cadr (note_entry);
108 fret_label = scm_call_3 (fret_procedure,
109 context ()->self_scm (),
110 string_number,
111 fret);
112 index = length_changed ? 0 : i;
113 Item *note = make_item ("TabNoteHead", note_events_[index]->self_scm ());
114 note->set_property ("text", fret_label);
115 staff_position = scm_call_2 (staff_line_procedure,
116 context ()->self_scm (),
117 string_number);
118 note->set_property ("staff-position", staff_position);
119 notes_.push_back (note);
123 void
124 Tab_note_heads_engraver::stop_translation_timestep ()
126 notes_.clear ();
127 note_events_.clear ();
128 tabstring_events_.clear ();
131 ADD_TRANSLATOR (Tab_note_heads_engraver,
132 /* doc */
133 "Generate one or more tablature noteheads from event of type"
134 " @code{NoteEvent}.",
136 /* create */
137 "TabNoteHead ",
139 /* read */
140 "fretLabels "
141 "highStringOne "
142 "middleCPosition "
143 "minimumFret "
144 "noteToFretFunction "
145 "stringOneTopmost "
146 "stringTunings "
147 "tablatureFormat "
148 "tabStaffLineLayoutFunction ",
150 /* write */ ""