lily/tab-note-heads-engraver.cc

   1 /*
   2   This file is part of LilyPond, the GNU music typesetter.
   3
   4   Copyright (C) 2002--2011 Han-Wen Nienhuys, Jean-Baptiste Lamy <jiba@tuxfamily.org>,
   5
   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.
  10
  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.
  15
  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/>.
  18 */
  19
  20 #include <cctype>
  21 #include <cstdio>
  22
  23 #include "engraver.hh"
  24
  25 using namespace std;
  26
  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"
  36
  37 #include "translator.icc"
  38
  39 /**
  40    make (guitar-like) tablature note
  41 */
  42 class Tab_note_heads_engraver : public Engraver
  43 {
  44   vector<Stream_event *> note_events_;
  45   vector<Stream_event *> tabstring_events_;
  46   vector<Stream_event *> fingering_events_;
  47
  48 public:
  49   TRANSLATOR_DECLARATIONS (Tab_note_heads_engraver);
  50
  51 protected:
  52   DECLARE_TRANSLATOR_LISTENER (note);
  53   DECLARE_TRANSLATOR_LISTENER (string_number);
  54   DECLARE_TRANSLATOR_LISTENER (fingering);
  55   void process_music ();
  56
  57   void stop_translation_timestep ();
  58 };
  59
  60 Tab_note_heads_engraver::Tab_note_heads_engraver ()
  61 {
  62 }
  63
  64 IMPLEMENT_TRANSLATOR_LISTENER (Tab_note_heads_engraver, note);
  65 void
  66 Tab_note_heads_engraver::listen_note (Stream_event *ev)
  67 {
  68   note_events_.push_back (ev);
  69 }
  70
  71 IMPLEMENT_TRANSLATOR_LISTENER (Tab_note_heads_engraver, string_number);
  72 void
  73 Tab_note_heads_engraver::listen_string_number (Stream_event *ev)
  74 {
  75   tabstring_events_.push_back (ev);
  76 }
  77
  78 IMPLEMENT_TRANSLATOR_LISTENER (Tab_note_heads_engraver, fingering);
  79 void
  80 Tab_note_heads_engraver::listen_fingering (Stream_event *ev)
  81 {
  82   fingering_events_.push_back (ev);
  83 }
  84
  85 void
  86 Tab_note_heads_engraver::process_music ()
  87 {
  88   SCM tab_strings = articulation_list (note_events_,
  89                                        tabstring_events_,
  90                                        "string-number-event");
  91   SCM defined_fingers = articulation_list (note_events_,
  92                                            fingering_events_,
  93                                            "fingering-event");
  94   SCM tab_notes = ly_cxx_vector_to_list (note_events_);
  95   SCM proc = get_property ("noteToFretFunction");
  96   SCM string_fret_finger = SCM_EOL;
  97   if (ly_is_procedure (proc))
  98     string_fret_finger = scm_call_3 (proc,
  99                                      context ()->self_scm (),
 100                                      tab_notes,
 101                                      scm_list_2 (tab_strings,
 102                                                  defined_fingers));
 103   SCM note_entry = SCM_EOL;
 104   SCM string_number = SCM_EOL;
 105   SCM fret = SCM_EOL;
 106   SCM fret_label = SCM_EOL;
 107   SCM fret_procedure = get_property ("tablatureFormat");
 108   SCM staff_line_procedure = get_property ("tabStaffLineLayoutFunction");
 109   SCM staff_position = SCM_EOL;
 110   vsize fret_count = (vsize) scm_ilength (string_fret_finger);
 111   bool length_changed = (note_events_.size () != fret_count);
 112   vsize index;
 113
 114   if (string_fret_finger != SCM_EOL)
 115     for (vsize i = 0; i < fret_count; i++)
 116       {
 117         note_entry = scm_list_ref (string_fret_finger, scm_from_int (i));
 118         string_number = scm_car (note_entry);
 119         fret = scm_cadr (note_entry);
 120         fret_label = scm_call_3 (fret_procedure,
 121                                  context ()->self_scm (),
 122                                  string_number,
 123                                  fret);
 124         index = length_changed ? 0 : i;
 125         Item *note = make_item ("TabNoteHead", note_events_[index]->self_scm ());
 126         note->set_property ("text", fret_label);
 127         staff_position = scm_call_2 (staff_line_procedure,
 128                                      context ()->self_scm (),
 129                                      string_number);
 130         note->set_property ("staff-position", staff_position);
 131       }
 132 }
 133
 134 void
 135 Tab_note_heads_engraver::stop_translation_timestep ()
 136 {
 137   note_events_.clear ();
 138   tabstring_events_.clear ();
 139   fingering_events_.clear ();
 140 }
 141
 142 ADD_TRANSLATOR (Tab_note_heads_engraver,
 143                 /* doc */
 144                 "Generate one or more tablature note heads from event of type"
 145                 " @code{NoteEvent}.",
 146
 147                 /* create */
 148                 "TabNoteHead ",
 149
 150                 /* read */
 151                 "defaultStrings "
 152                 "fretLabels "
 153                 "highStringOne "
 154                 "middleCPosition "
 155                 "minimumFret "
 156                 "noteToFretFunction "
 157                 "stringOneTopmost "
 158                 "stringTunings "
 159                 "tablatureFormat "
 160                 "tabStaffLineLayoutFunction ",
 161
 162                 /* write */
 163                 ""
 164                 );
 165