lily/text-engraver.cc

   1 /*
   2   This file is part of LilyPond, the GNU music typesetter.
   3
   4   Copyright (C) 1998--2010 Han-Wen Nienhuys <hanwen@xs4all.nl>
   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 "directional-element-interface.hh"
  21 #include "engraver.hh"
  22 #include "rhythmic-head.hh"
  23 #include "side-position-interface.hh"
  24 #include "stem.hh"
  25 #include "stream-event.hh"
  26 #include "text-interface.hh"
  27 #include "item.hh"
  28
  29 #include "translator.icc"
  30
  31 /**
  32    typeset directions that are  plain text.
  33 */
  34 class Text_engraver : public Engraver
  35 {
  36   vector<Stream_event *> evs_;
  37   vector<Grob*> texts_;
  38 public:
  39   TRANSLATOR_DECLARATIONS (Text_engraver);
  40 protected:
  41   void stop_translation_timestep ();
  42   void process_acknowledged ();
  43
  44   DECLARE_TRANSLATOR_LISTENER (text_script);
  45 };
  46
  47 IMPLEMENT_TRANSLATOR_LISTENER (Text_engraver, text_script);
  48 void
  49 Text_engraver::listen_text_script (Stream_event *ev)
  50 {
  51   evs_.push_back (ev);
  52 }
  53
  54 void
  55 Text_engraver::process_acknowledged ()
  56 {
  57   if (texts_.size ())
  58     return;
  59   for (vsize i = 0; i < evs_.size (); i++)
  60     {
  61       Stream_event *r = evs_[i];
  62
  63       // URG: Text vs TextScript
  64       Item *text = make_item ("TextScript", r->self_scm ());
  65
  66       int priority = robust_scm2int (text->get_property ("script-priority"),
  67                                      200);
  68
  69       /* see script-engraver.cc */
  70       priority += i;
  71
  72       text->set_property ("script-priority", scm_from_int (priority));
  73
  74       Direction dir = to_dir (r->get_property ("direction"));
  75       if (dir)
  76         set_grob_direction (text, dir);
  77
  78       SCM mark = r->get_property ("text");
  79
  80       text->set_property ("text", mark);
  81       texts_.push_back (text);
  82     }
  83 }
  84
  85 void
  86 Text_engraver::stop_translation_timestep ()
  87 {
  88   texts_.clear ();
  89   evs_.clear ();
  90 }
  91
  92 Text_engraver::Text_engraver ()
  93 {
  94 }
  95
  96 ADD_TRANSLATOR (Text_engraver,
  97                 /* doc */
  98                 "Create text scripts.",
  99
 100                 /* create */
 101                 "TextScript ",
 102
 103                 /* read */
 104                 "",
 105
 106                 /* write */
 107                 ""
 108                 );