Use scalar instead of embedded_scm for context mod overrides.
[lilypond/mpolesky.git] / lily / instrument-name-engraver.cc
blobcacb2809aa80f99b18b995b123055d6795d6ed00
1 /*
2 instrument-name-engraver.cc -- implement Instrument_name_engraver
4 source file of the GNU LilyPond music typesetter
6 (c) 2000--2009 Han-Wen Nienhuys <hanwen@xs4all.nl>
7 */
9 #include "engraver.hh"
10 #include "pointer-group-interface.hh"
11 #include "side-position-interface.hh"
12 #include "axis-group-interface.hh"
13 #include "align-interface.hh"
14 #include "text-interface.hh"
15 #include "system.hh"
17 #include "translator.icc"
19 class Instrument_name_engraver : public Engraver
21 public:
22 TRANSLATOR_DECLARATIONS (Instrument_name_engraver);
24 protected:
25 Spanner *text_spanner_;
27 SCM long_text_;
28 SCM short_text_;
30 vector<Grob *> axis_groups_;
32 virtual void finalize ();
33 DECLARE_ACKNOWLEDGER (axis_group);
34 void process_music ();
35 void start_spanner ();
36 void consider_start_spanner ();
37 void stop_spanner ();
40 Instrument_name_engraver::Instrument_name_engraver ()
42 text_spanner_ = 0;
44 long_text_ = SCM_EOL;
45 short_text_ = SCM_EOL;
48 void
49 Instrument_name_engraver::process_music ()
51 consider_start_spanner ();
54 void
55 Instrument_name_engraver::consider_start_spanner ()
57 SCM long_text = get_property ("instrumentName");
58 SCM short_text = get_property ("shortInstrumentName");
60 if (!(Text_interface::is_markup (long_text)
61 || Text_interface::is_markup (short_text)))
63 long_text = get_property ("vocalName");
64 short_text = get_property ("shortVocalName");
67 if ((Text_interface::is_markup (long_text)
68 || Text_interface::is_markup (short_text))
69 && (!text_spanner_
70 || short_text_ != short_text
71 || long_text_ != long_text))
73 if (text_spanner_)
74 stop_spanner ();
76 short_text_ = short_text;
77 long_text_ = long_text;
79 start_spanner ();
83 void
84 Instrument_name_engraver::start_spanner ()
86 text_spanner_ = make_spanner ("InstrumentName", SCM_EOL);
88 Grob *col = unsmob_grob (get_property ("currentCommandColumn"));
89 text_spanner_->set_bound (LEFT, col);
90 text_spanner_->set_property ("text", short_text_);
91 text_spanner_->set_property ("long-text", long_text_);
94 UGH, should handle this in Score_engraver.
96 Grob *system = unsmob_grob (get_property ("rootSystem"));
97 if (system)
98 Axis_group_interface::add_element (system, text_spanner_);
99 else
100 text_spanner_->programming_error ("cannot find root system");
103 void
104 Instrument_name_engraver::acknowledge_axis_group (Grob_info info)
106 if (dynamic_cast<Spanner *> (info.grob ())
107 && Axis_group_interface::has_axis (info.grob (), Y_AXIS)
109 /* ugh. */
111 && !info.grob ()->internal_has_interface (ly_symbol2scm ("dynamic-interface"))
112 && !info.grob ()->internal_has_interface (ly_symbol2scm ("piano-pedal-interface"))
113 && (!Align_interface::has_interface (info.grob ())))
115 axis_groups_.push_back (info.grob ());
119 void
120 Instrument_name_engraver::finalize ()
122 if (text_spanner_)
123 stop_spanner ();
126 void
127 Instrument_name_engraver::stop_spanner ()
129 for (vsize i = 0; i < axis_groups_.size (); i++)
130 Pointer_group_interface::add_grob (text_spanner_,
131 ly_symbol2scm ("elements"),
132 axis_groups_[i]);
134 text_spanner_->set_bound (RIGHT,
135 unsmob_grob (get_property ("currentCommandColumn")));
137 Pointer_group_interface::set_ordered (text_spanner_,
138 ly_symbol2scm ("elements"),
139 false);
141 text_spanner_ = 0;
145 ADD_ACKNOWLEDGER (Instrument_name_engraver, axis_group);
147 ADD_TRANSLATOR (Instrument_name_engraver,
148 /* doc */
149 "Create a system start text for instrument or vocal names.",
151 /* create */
152 "InstrumentName ",
154 /* read */
155 "currentCommandColumn "
156 "shortInstrumentName "
157 "instrumentName "
158 "shortVocalName "
159 "vocalName ",
161 /* write */