2 horizontal-bracket-engraver.cc -- implement
3 Horizontal_bracket_engraver
5 source file of the GNU LilyPond music typesetter
7 (c) 2002--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
10 #include "engraver.hh"
11 #include "international.hh"
12 #include "note-column.hh"
13 #include "pointer-group-interface.hh"
14 #include "side-position-interface.hh"
16 #include "translator.icc"
18 class Horizontal_bracket_engraver : public Engraver
21 TRANSLATOR_DECLARATIONS (Horizontal_bracket_engraver);
22 Link_array<Spanner> bracket_stack_;
23 Link_array<Music> events_;
27 virtual bool try_music (Music *);
28 void stop_translation_timestep ();
29 void process_music ();
30 DECLARE_ACKNOWLEDGER (note_column);
33 ADD_ACKNOWLEDGER (Horizontal_bracket_engraver, note_column);
34 ADD_TRANSLATOR (Horizontal_bracket_engraver,
35 "Create horizontal brackets over notes for musical analysis purposes.",
37 "note-grouping-event",
41 Horizontal_bracket_engraver::Horizontal_bracket_engraver ()
48 Horizontal_bracket_engraver::try_music (Music *m)
50 if (m->is_mus_type ("note-grouping-event"))
52 Direction d = to_dir (m->get_property ("span-direction"));
57 if (pop_count_ > bracket_stack_.size ())
58 m->origin ()->warning (_ ("don't have that many brackets"));
66 if (pop_count_ && push_count_)
67 m->origin ()->warning (_ ("conflicting note group events"));
75 Horizontal_bracket_engraver::acknowledge_note_column (Grob_info gi)
77 for (int i = 0; i < bracket_stack_.size (); i++)
79 Side_position_interface::add_support (bracket_stack_[i], gi.grob ());
80 Pointer_group_interface::add_grob (bracket_stack_[i],
81 ly_symbol2scm ("columns"), gi.grob ());
82 add_bound_item (bracket_stack_[i],
88 Horizontal_bracket_engraver::process_music ()
90 for (int k = 0; k < push_count_; k++)
92 Spanner *sp = make_spanner ("HorizontalBracket", events_[k]->self_scm ());
94 for (int i = 0; i < bracket_stack_.size (); i++)
97 sp is the smallest, it should be added to the bigger brackets.
99 Side_position_interface::add_support (bracket_stack_[i], sp);
101 bracket_stack_.push (sp);
106 Horizontal_bracket_engraver::stop_translation_timestep ()
108 for (int i = pop_count_; i--;)
110 if (bracket_stack_.size ())
111 bracket_stack_.pop ();