2 This file is part of LilyPond, the GNU music typesetter.
4 Copyright (C) 2012 Mike Solomon <mike@mikesolomon.org>
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"
21 #include "side-position-interface.hh"
22 #include "pointer-group-interface.hh"
23 #include "fingering-column.hh"
26 #include "translator.icc"
29 Find potentially colliding scripts, and put them in a
30 Fingering_column, that will fix the columns. */
31 class Fingering_column_engraver : public Engraver
33 Drul_array<Grob *> fingering_columns_;
34 Drul_array<vector<Grob *> > scripts_;
35 vector<Grob *> possibles_;
38 TRANSLATOR_DECLARATIONS (Fingering_column_engraver);
40 void acknowledge_finger (Grob_info);
41 void process_acknowledged ();
42 void stop_translation_timestep ();
45 Fingering_column_engraver::Fingering_column_engraver (Context *c)
48 for (LEFT_and_RIGHT (d))
49 fingering_columns_[d] = 0;
53 Fingering_column_engraver::stop_translation_timestep ()
55 for (vsize i = 0; i < possibles_.size (); i++)
56 if (!Item::is_non_musical (possibles_[i]))
58 if (Side_position_interface::get_axis (possibles_[i]) == X_AXIS)
60 Direction d = robust_scm2dir (possibles_[i]->get_property ("direction"), CENTER);
62 scripts_[d].push_back (possibles_[i]);
64 possibles_[i]->warning ("Cannot add a fingering without a direction.");
68 for (LEFT_and_RIGHT (d))
70 if (scripts_[d].size () < 2 && fingering_columns_[d])
72 fingering_columns_[d]->suicide ();
73 fingering_columns_[d] = 0;
75 if (fingering_columns_[d])
77 for (vsize i = 0; i < scripts_[d].size (); i++)
78 Fingering_column::add_fingering (fingering_columns_[d], scripts_[d][i]);
82 fingering_columns_[d] = 0;
88 Fingering_column_engraver::acknowledge_finger (Grob_info inf)
90 Item *thing = dynamic_cast<Item *> (inf.grob ());
92 possibles_.push_back (thing);
96 Fingering_column_engraver::process_acknowledged ()
98 for (LEFT_and_RIGHT (d))
100 if (possibles_.size () > 1 && !fingering_columns_[d])
101 fingering_columns_[d] = make_item ("FingeringColumn", SCM_EOL);
106 Fingering_column_engraver::boot ()
108 ADD_ACKNOWLEDGER (Fingering_column_engraver, finger);
111 ADD_TRANSLATOR (Fingering_column_engraver,
113 "Find potentially colliding scripts and put them into a"
114 " @code{FingeringColumn} object; that will fix the collisions.",