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 "note-head.hh"
  24 #include "side-position-interface.hh"
  25 #include "stem.hh"
  26 #include "stream-event.hh"
  27 #include "text-interface.hh"
  28 #include "item.hh"
  29
  30 #include "translator.icc"
  31
  32 class Part_combine_engraver : public Engraver
  33 {
  34   TRANSLATOR_DECLARATIONS (Part_combine_engraver);
  35
  36 protected:
  37   DECLARE_ACKNOWLEDGER (note_head);
  38   DECLARE_ACKNOWLEDGER (stem);
  39
  40   DECLARE_TRANSLATOR_LISTENER (part_combine);
  41   void process_music ();
  42   void stop_translation_timestep ();
  43 private:
  44   Item *text_;
  45   Stream_event *event_;
  46 };
  47
  48 IMPLEMENT_TRANSLATOR_LISTENER (Part_combine_engraver, part_combine);
  49 void
  50 Part_combine_engraver::listen_part_combine (Stream_event *ev)
  51 {
  52   ASSIGN_EVENT_ONCE (event_, ev);
  53 }
  54
  55 Part_combine_engraver::Part_combine_engraver ()
  56 {
  57   text_ = 0;
  58   event_ = 0;
  59 }
  60
  61 void
  62 Part_combine_engraver::process_music ()
  63 {
  64   if (event_
  65       && to_boolean (get_property ("printPartCombineTexts")))
  66     {
  67       SCM what = event_->get_property ("class");
  68       SCM text = SCM_EOL;
  69       if (what == ly_symbol2scm ("solo-one-event"))
  70         text = get_property ("soloText");
  71       else if (what == ly_symbol2scm ("solo-two-event"))
  72         text = get_property ("soloIIText");
  73       else if (what == ly_symbol2scm ("unisono-event"))
  74         text = get_property ("aDueText");
  75
  76       if (Text_interface::is_markup (text))
  77         {
  78           text_ = make_item ("CombineTextScript", event_->self_scm ());
  79           text_->set_property ("text", text);
  80         }
  81     }
  82 }
  83
  84 void
  85 Part_combine_engraver::acknowledge_note_head (Grob_info i)
  86 {
  87   if (text_)
  88     {
  89       Grob *t = text_;
  90       Side_position_interface::add_support (t, i.grob ());
  91       if (Side_position_interface::get_axis (t) == X_AXIS
  92           && !t->get_parent (Y_AXIS))
  93         t->set_parent (i.grob (), Y_AXIS);
  94     }
  95 }
  96
  97 void
  98 Part_combine_engraver::acknowledge_stem (Grob_info i)
  99 {
 100   if (text_)
 101     Side_position_interface::add_support (text_, i.grob ());
 102 }
 103
 104 void
 105 Part_combine_engraver::stop_translation_timestep ()
 106 {
 107   text_ = 0;
 108   event_ = 0;
 109 }
 110
 111 ADD_ACKNOWLEDGER (Part_combine_engraver, note_head);
 112 ADD_ACKNOWLEDGER (Part_combine_engraver, stem);
 113 ADD_TRANSLATOR (Part_combine_engraver,
 114                 /* doc */
 115                 "Part combine engraver for orchestral scores: Print markings"
 116                 " @q{a2}, @q{Solo}, @q{Solo II}, and @q{unisono}.",
 117
 118                 /* create */
 119                 "CombineTextScript ",
 120
 121                 /* read */
 122                 "printPartCombineTexts "
 123                 "soloText "
 124                 "soloIIText "
 125                 "aDueText ",
 126
 127                 /* write */
 128                 ""
 129                 );