2 This file is part of LilyPond, the GNU music typesetter.
4 Copyright (C) 2005--2015 Han-Wen Nienhuys <hanwen@xs4all.nl>
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.
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.
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/>.
20 #include "engraver.hh"
22 #include "grid-line-interface.hh"
24 #include "translator.icc"
26 class Grid_line_span_engraver : public Engraver
29 vector<Item *> lines_;
32 TRANSLATOR_DECLARATIONS (Grid_line_span_engraver);
34 void acknowledge_grid_point (Grob_info);
35 void stop_translation_timestep ();
38 Grid_line_span_engraver::Grid_line_span_engraver ()
44 Grid_line_span_engraver::acknowledge_grid_point (Grob_info i)
46 int depth = i.origin_contexts (this).size ();
49 Item *it = dynamic_cast<Item *> (i.grob ());
50 lines_.push_back (it);
52 if (lines_.size () >= 2 && !spanline_)
54 spanline_ = make_item ("GridLine", SCM_EOL);
55 spanline_->set_parent (lines_[0], X_AXIS);
61 Grid_line_span_engraver::stop_translation_timestep ()
65 for (vsize i = 0; i < lines_.size (); i++)
66 Grid_line_interface::add_grid_point (spanline_, lines_[i]);
74 Grid_line_span_engraver::boot ()
76 ADD_ACKNOWLEDGER (Grid_line_span_engraver, grid_point);
79 ADD_TRANSLATOR (Grid_line_span_engraver,
81 "This engraver makes cross-staff lines: It catches all normal"
82 " lines and draws a single span line across them.",