lily/text-engraver.cc

   1 /*
   2   This file is part of LilyPond, the GNU music typesetter.
   3
   4   Copyright (C) 1998--2011 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 "item.hh"
  23 #include "side-position-interface.hh"
  24 #include "stream-event.hh"
  25 #include "text-interface.hh"
  26
  27 #include "translator.icc"
  28
  29 /**
  30    typeset directions that are  plain text.
  31 */
  32 class Text_engraver : public Engraver
  33 {
  34   vector<Stream_event *> evs_;
  35 public:
  36   TRANSLATOR_DECLARATIONS (Text_engraver);
  37 protected:
  38   void stop_translation_timestep ();
  39   void process_music ();
  40
  41   DECLARE_TRANSLATOR_LISTENER (text_script);
  42 };
  43
  44 IMPLEMENT_TRANSLATOR_LISTENER (Text_engraver, text_script);
  45 void
  46 Text_engraver::listen_text_script (Stream_event *ev)
  47 {
  48   evs_.push_back (ev);
  49 }
  50
  51 void
  52 Text_engraver::process_music ()
  53 {
  54   for (vsize i = 0; i < evs_.size (); i++)
  55     {
  56       Stream_event *r = evs_[i];
  57
  58       // URG: Text vs TextScript
  59       Item *text = make_item ("TextScript", r->self_scm ());
  60
  61       int priority = robust_scm2int (text->get_property ("script-priority"),
  62                                      200);
  63
  64       /* see script-engraver.cc */
  65       priority += i;
  66
  67       text->set_property ("script-priority", scm_from_int (priority));
  68
  69       Direction dir = to_dir (r->get_property ("direction"));
  70       if (dir)
  71         set_grob_direction (text, dir);
  72
  73       SCM mark = r->get_property ("text");
  74
  75       text->set_property ("text", mark);
  76     }
  77 }
  78
  79 void
  80 Text_engraver::stop_translation_timestep ()
  81 {
  82   evs_.clear ();
  83 }
  84
  85 Text_engraver::Text_engraver ()
  86 {
  87 }
  88
  89 ADD_TRANSLATOR (Text_engraver,
  90                 /* doc */
  91                 "Create text scripts.",
  92
  93                 /* create */
  94                 "TextScript ",
  95
  96                 /* read */
  97                 "",
  98
  99                 /* write */
 100                 ""
 101                 );