lily/part-combine-engraver.cc

   1 /*
   2   This file is part of LilyPond, the GNU music typesetter.
   3
   4   Copyright (C) 2000--2010 Jan Nieuwenhuizen <janneke@gnu.org>
   5
   6   Han-Wen Nienhuys <hanwen@xs4all.nl>
   7
   8   LilyPond is free software: you can redistribute it and/or modify
   9   it under the terms of the GNU General Public License as published by
  10   the Free Software Foundation, either version 3 of the License, or
  11   (at your option) any later version.
  12
  13   LilyPond is distributed in the hope that it will be useful,
  14   but WITHOUT ANY WARRANTY; without even the implied warranty of
  15   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16   GNU General Public License for more details.
  17
  18   You should have received a copy of the GNU General Public License
  19   along with LilyPond.  If not, see <http://www.gnu.org/licenses/>.
  20 */
  21
  22 #include "engraver.hh"
  23 #include "multi-measure-rest.hh"
  24 #include "note-head.hh"
  25 #include "side-position-interface.hh"
  26 #include "stem.hh"
  27 #include "stream-event.hh"
  28 #include "text-interface.hh"
  29 #include "item.hh"
  30
  31 #include "translator.icc"
  32
  33 class Part_combine_engraver : public Engraver
  34 {
  35   TRANSLATOR_DECLARATIONS (Part_combine_engraver);
  36
  37 protected:
  38   DECLARE_ACKNOWLEDGER (note_head);
  39   DECLARE_ACKNOWLEDGER (stem);
  40
  41   DECLARE_TRANSLATOR_LISTENER (part_combine);
  42   void process_music ();
  43   void stop_translation_timestep ();
  44 private:
  45   Item *text_;
  46   Stream_event *event_;
  47 };
  48
  49 IMPLEMENT_TRANSLATOR_LISTENER (Part_combine_engraver, part_combine);
  50 void
  51 Part_combine_engraver::listen_part_combine (Stream_event *ev)
  52 {
  53   ASSIGN_EVENT_ONCE (event_, ev);
  54 }
  55
  56 Part_combine_engraver::Part_combine_engraver ()
  57 {
  58   text_ = 0;
  59   event_ = 0;
  60 }
  61
  62 void
  63 Part_combine_engraver::process_music ()
  64 {
  65   if (event_
  66       && to_boolean (get_property ("printPartCombineTexts")))
  67     {
  68       SCM what = event_->get_property ("class");
  69       SCM text = SCM_EOL;
  70       if (what == ly_symbol2scm ("solo-one-event"))
  71         text = get_property ("soloText");
  72       else if (what == ly_symbol2scm ("solo-two-event"))
  73         text = get_property ("soloIIText");
  74       else if (what == ly_symbol2scm ("unisono-event"))
  75         text = get_property ("aDueText");
  76
  77       if (Text_interface::is_markup (text))
  78         {
  79           text_ = make_item ("CombineTextScript", event_->self_scm ());
  80           text_->set_property ("text", text);
  81         }
  82     }
  83 }
  84
  85 void
  86 Part_combine_engraver::acknowledge_note_head (Grob_info i)
  87 {
  88   if (text_)
  89     {
  90       Grob *t = text_;
  91       Side_position_interface::add_support (t, i.grob ());
  92       if (Side_position_interface::get_axis (t) == X_AXIS
  93           && !t->get_parent (Y_AXIS))
  94         t->set_parent (i.grob (), Y_AXIS);
  95     }
  96 }
  97
  98 void
  99 Part_combine_engraver::acknowledge_stem (Grob_info i)
 100 {
 101   if (text_)
 102     Side_position_interface::add_support (text_, i.grob ());
 103 }
 104
 105 void
 106 Part_combine_engraver::stop_translation_timestep ()
 107 {
 108   text_ = 0;
 109   event_ = 0;
 110 }
 111
 112 ADD_ACKNOWLEDGER (Part_combine_engraver, note_head);
 113 ADD_ACKNOWLEDGER (Part_combine_engraver, stem);
 114 ADD_TRANSLATOR (Part_combine_engraver,
 115                 /* doc */
 116                 "Part combine engraver for orchestral scores: Print markings"
 117                 " @q{a2}, @q{Solo}, @q{Solo II}, and @q{unisono}.",
 118
 119                 /* create */
 120                 "CombineTextScript ",
 121
 122                 /* read */
 123                 "printPartCombineTexts "
 124                 "soloText "
 125                 "soloIIText "
 126                 "aDueText ",
 127
 128                 /* write */
 129                 ""
 130                 );