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"
31 Find potentially colliding scripts, and put them in a
32 Fingering_column, that will fix the columns. */
33 class Fingering_column_engraver : public Engraver
35 Drul_array<Grob *> fingering_columns_;
36 Drul_array<vector<Grob *> > scripts_;
37 vector<Grob *> possibles_;
40 TRANSLATOR_DECLARATIONS (Fingering_column_engraver);
42 DECLARE_ACKNOWLEDGER (finger);
43 void process_acknowledged ();
44 void stop_translation_timestep ();
47 Fingering_column_engraver::Fingering_column_engraver ()
49 for (LEFT_and_RIGHT (d))
50 fingering_columns_[d] = 0;
54 Fingering_column_engraver::stop_translation_timestep ()
56 for (vsize i = 0; i < possibles_.size (); i++)
57 if (!Item::is_non_musical (possibles_[i]))
59 if (Side_position_interface::get_axis (possibles_[i]) == X_AXIS)
61 Direction d = robust_scm2dir (possibles_[i]->get_property ("direction"), CENTER);
63 scripts_[d].push_back (possibles_[i]);
65 possibles_[i]->warning ("Cannot add a fingering without a direction.");
69 for (LEFT_and_RIGHT (d))
71 if (scripts_[d].size () < 2 && fingering_columns_[d])
73 fingering_columns_[d]->suicide ();
74 fingering_columns_[d] = 0;
76 if (fingering_columns_[d])
78 for (vsize i = 0; i < scripts_[d].size (); i++)
79 Fingering_column::add_fingering (fingering_columns_[d], scripts_[d][i]);
83 fingering_columns_[d] = 0;
89 Fingering_column_engraver::acknowledge_finger (Grob_info inf)
91 Item *thing = dynamic_cast<Item *> (inf.grob ());
93 possibles_.push_back (thing);
97 Fingering_column_engraver::process_acknowledged ()
99 for (LEFT_and_RIGHT (d))
101 if (possibles_.size () > 1 && !fingering_columns_[d])
102 fingering_columns_[d] = make_item ("FingeringColumn", SCM_EOL);
106 ADD_ACKNOWLEDGER (Fingering_column_engraver, finger);
107 ADD_TRANSLATOR (Fingering_column_engraver,
109 "Find potentially colliding scripts and put them into a"
110 " @code{FingeringColumn} object; that will fix the collisions.",