2 This file is part of LilyPond, the GNU music typesetter.
4 Copyright (C) 1997--2015 Han-Wen Nienhuys <hanwen@xs4all.nl>
5 Mats Bengtsson <matsb@s3.kth.se>
6 Copyright (C) 2010--2015 Reinhold Kainhofer <reinhold@kainhofer.com>
8 LilyPond is free software: you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation, either version 3 of the License, or
11 (at your option) any later version.
13 LilyPond is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
26 #include "staff-symbol-referencer.hh"
27 #include "engraver.hh"
28 #include "direction.hh"
29 #include "side-position-interface.hh"
31 #include "international.hh"
33 #include "translator.icc"
35 class Cue_clef_engraver : public Engraver
38 TRANSLATOR_DECLARATIONS (Cue_clef_engraver);
41 void stop_translation_timestep ();
42 void process_music ();
43 DECLARE_ACKNOWLEDGER (bar_line);
45 virtual void derived_mark () const;
52 SCM prev_transposition_;
54 void create_end_clef ();
56 void inspect_clef_properties ();
57 void create_clef_modifier (SCM oct);
61 Cue_clef_engraver::derived_mark () const
63 scm_gc_mark (prev_transposition_);
64 scm_gc_mark (prev_cpos_);
65 scm_gc_mark (prev_glyph_);
68 Cue_clef_engraver::Cue_clef_engraver ()
73 prev_transposition_ = prev_cpos_ = prev_glyph_ = SCM_EOL;
77 Cue_clef_engraver::set_glyph ()
79 SCM glyph_sym = ly_symbol2scm ("glyph");
80 SCM basic = ly_symbol2scm ("CueClef");
81 execute_pushpop_property (context (), basic, glyph_sym, SCM_UNDEFINED);
82 execute_pushpop_property (context (), basic, glyph_sym, get_property ("cueClefGlyph"));
84 basic = ly_symbol2scm ("CueEndClef");
85 execute_pushpop_property (context (), basic, glyph_sym, SCM_UNDEFINED);
86 execute_pushpop_property (context (), basic, glyph_sym, get_property ("clefGlyph"));
90 Generate a clef at the start of a measure. (when you see a Bar,
94 Cue_clef_engraver::acknowledge_bar_line (Grob_info info)
96 Item *item = info.item ();
97 if (item && scm_is_string (get_property ("cueClefGlyph")))
102 Cue_clef_engraver::create_clef_modifier (SCM transp)
104 if (scm_is_number (transp) && scm_to_int (transp))
106 Item *g = make_item ("ClefModifier", SCM_EOL);
108 int abs_transp = scm_to_int (transp);
109 int dir = sign (abs_transp);
110 abs_transp = abs (abs_transp) + 1;
112 SCM txt = scm_number_to_string (scm_from_int (abs_transp),
115 SCM style = get_property ("cueClefTranspositionStyle");
117 SCM formatter = get_property ("cueClefTranspositionFormatter");
118 if (ly_is_procedure (formatter))
119 g->set_property ("text", scm_call_2 (formatter, txt, style));
121 Side_position_interface::add_support (g, clef_);
123 g->set_parent (clef_, Y_AXIS);
124 g->set_parent (clef_, X_AXIS);
125 g->set_property ("direction", scm_from_int (dir));
131 Cue_clef_engraver::create_clef ()
135 Item *c = make_item ("CueClef", SCM_EOL);
138 SCM cpos = get_property ("cueClefPosition");
139 if (scm_is_number (cpos))
140 clef_->set_property ("staff-position", cpos);
142 create_clef_modifier (get_property ("cueClefTransposition"));
147 Cue_clef_engraver::create_end_clef ()
151 clef_ = make_item ("CueEndClef", SCM_EOL);
152 SCM cpos = get_property ("clefPosition");
153 if (scm_is_number (cpos))
154 clef_->set_property ("staff-position", cpos);
156 create_clef_modifier (get_property ("clefTransposition"));
161 Cue_clef_engraver::process_music ()
163 inspect_clef_properties ();
167 Cue_clef_engraver::inspect_clef_properties ()
169 SCM glyph = get_property ("cueClefGlyph");
170 SCM clefpos = get_property ("cueClefPosition");
171 SCM transposition = get_property ("cueClefTransposition");
173 if (!ly_is_equal (glyph, prev_glyph_)
174 || !ly_is_equal (clefpos, prev_cpos_)
175 || !ly_is_equal (transposition, prev_transposition_))
178 if (scm_is_string (glyph))
182 clef_->set_property ("non-default", SCM_BOOL_T);
187 prev_cpos_ = clefpos;
189 prev_transposition_ = transposition;
195 Cue_clef_engraver::stop_translation_timestep ()
200 if (to_boolean (clef_->get_property ("non-default")))
201 vis = get_property ("explicitCueClefVisibility");
204 clef_->set_property ("break-visibility", vis);
211 ADD_ACKNOWLEDGER (Cue_clef_engraver, bar_line);
212 ADD_TRANSLATOR (Cue_clef_engraver,
214 "Determine and set reference point for pitches in cued voices.",
223 "cueClefTransposition "
224 "cueClefTranspositionStyle "
226 "explicitCueClefVisibility "
227 "middleCCuePosition "
228 "clefTransposition ",