2 This file is part of LilyPond, the GNU music typesetter.
4 Copyright (C) 2003--2015 Juergen Reuter <reuter@ipd.uka.de>
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 "gregorian-ligature-engraver.hh"
22 #include "gregorian-ligature.hh"
23 #include "international.hh"
24 #include "paper-column.hh"
27 #include "staff-symbol-referencer.hh"
28 #include "stream-event.hh"
31 /* ASSIGN_EVENT_ONCE */
32 #include "translator.icc"
37 * This abstract class is the common superclass for all ligature
38 * engravers for Gregorian chant notation. It cares for the musical
39 * handling of the neumes, such as checking for valid combinations of
40 * neumes and providing context information. Notational aspects such
41 * as the glyphs to use or calculating the total width of a ligature,
42 * are left to the concrete subclass. Currently, there is only a
43 * single subclass, Vaticana_ligature_engraver. Other ligature
44 * engravers for Gregorian chant will be added in the future, such as
45 * Medicaea_ligature_engraver or Hufnagel_ligature_engraver.
47 Gregorian_ligature_engraver::Gregorian_ligature_engraver ()
49 pes_or_flexa_req_ = 0;
53 Gregorian_ligature_engraver::listen_pes_or_flexa (Stream_event *ev)
55 ASSIGN_EVENT_ONCE (pes_or_flexa_req_, ev);
58 void fix_prefix (char const *name, int mask,
59 int *current_set, int min_set, int max_set,
62 bool current = *current_set & mask;
63 bool min = min_set & mask;
64 bool max = max_set & mask;
67 programming_error ("min_set > max_set");
72 primitive->warning (_f ("\\%s ignored", name));
73 *current_set &= ~mask;
77 primitive->warning (_f ("implied \\%s added", name));
82 void fix_prefix_set (int *current_set, int min_set, int max_set, Grob *primitive)
84 fix_prefix ("virga", VIRGA, current_set, min_set, max_set, primitive);
85 fix_prefix ("stropha", STROPHA, current_set, min_set, max_set, primitive);
86 fix_prefix ("inclinatum", INCLINATUM, current_set, min_set, max_set, primitive);
87 fix_prefix ("auctum", AUCTUM, current_set, min_set, max_set, primitive);
88 fix_prefix ("descendens", DESCENDENS, current_set, min_set, max_set, primitive);
89 fix_prefix ("ascendens", ASCENDENS, current_set, min_set, max_set, primitive);
90 fix_prefix ("oriscus", ORISCUS, current_set, min_set, max_set, primitive);
91 fix_prefix ("quilisma", QUILISMA, current_set, min_set, max_set, primitive);
92 fix_prefix ("deminutum", DEMINUTUM, current_set, min_set, max_set, primitive);
93 fix_prefix ("cavum", CAVUM, current_set, min_set, max_set, primitive);
94 fix_prefix ("linea", LINEA, current_set, min_set, max_set, primitive);
95 fix_prefix ("pes_or_flexa", LINEA, current_set, min_set, max_set, primitive);
98 void check_and_fix_all_prefixes (vector<Grob_info> const &primitives)
100 /* Check for invalid head modifier combinations */
101 for (vsize i = 0; i < primitives.size (); i++)
103 Grob *primitive = primitives[i].grob ();
105 /* compute head prefix set by inspecting primitive grob properties */
107 = (VIRGA * to_boolean (primitive->get_property ("virga")))
108 | (STROPHA * to_boolean (primitive->get_property ("stropha")))
109 | (INCLINATUM * to_boolean (primitive->get_property ("inclinatum")))
110 | (AUCTUM * to_boolean (primitive->get_property ("auctum")))
111 | (DESCENDENS * to_boolean (primitive->get_property ("descendens")))
112 | (ASCENDENS * to_boolean (primitive->get_property ("ascendens")))
113 | (ORISCUS * to_boolean (primitive->get_property ("oriscus")))
114 | (QUILISMA * to_boolean (primitive->get_property ("quilisma")))
115 | (DEMINUTUM * to_boolean (primitive->get_property ("deminutum")))
116 | (CAVUM * to_boolean (primitive->get_property ("cavum")))
117 | (LINEA * to_boolean (primitive->get_property ("linea")))
118 | (PES_OR_FLEXA * to_boolean (primitive->get_property ("pes-or-flexa")));
120 /* check: ascendens and descendens exclude each other; same with
121 auctum and deminutum */
122 if (prefix_set & DESCENDENS)
124 fix_prefix_set (&prefix_set,
125 prefix_set & ~ASCENDENS,
126 prefix_set & ~ASCENDENS,
129 if (prefix_set & AUCTUM)
131 fix_prefix_set (&prefix_set,
132 prefix_set & ~DEMINUTUM,
133 prefix_set & ~DEMINUTUM,
137 /* check: virga, quilisma and oriscus cannot be combined with any
138 other prefix, but may be part of a pes or flexa */
139 if (prefix_set & VIRGA)
141 fix_prefix_set (&prefix_set,
143 VIRGA | PES_OR_FLEXA,
146 if (prefix_set & QUILISMA)
148 fix_prefix_set (&prefix_set,
150 QUILISMA | PES_OR_FLEXA,
153 if (prefix_set & ORISCUS)
155 fix_prefix_set (&prefix_set,
157 ORISCUS | PES_OR_FLEXA,
161 /* check: auctum is the only valid optional prefix for stropha */
162 if (prefix_set & STROPHA)
164 fix_prefix_set (&prefix_set,
170 /* check: inclinatum may be prefixed with auctum or deminutum only */
171 if (prefix_set & INCLINATUM)
173 fix_prefix_set (&prefix_set,
175 INCLINATUM | AUCTUM | DEMINUTUM,
178 /* check: semivocalis (deminutum but not inclinatum) must occur in
179 combination with and only with pes or flexa */
180 else if (prefix_set & DEMINUTUM)
182 fix_prefix_set (&prefix_set,
183 DEMINUTUM | PES_OR_FLEXA,
184 DEMINUTUM | PES_OR_FLEXA,
188 /* check: cavum and linea (either or both) may be applied only
190 if (prefix_set & (CAVUM | LINEA))
192 fix_prefix_set (&prefix_set,
198 /* all other combinations should be valid (unless I made a
201 primitive->set_property ("prefix-set", scm_from_int (prefix_set));
206 * Marks those heads that participate in a pes or flexa.
209 provide_context_info (vector<Grob_info> const &primitives)
211 Grob *prev_primitive = 0;
212 int prev_prefix_set = 0;
213 int prev_context_info = 0;
215 for (vsize i = 0; i < primitives.size (); i++)
217 Grob *primitive = primitives[i].grob ();
218 Stream_event *event_cause = primitives[i].event_cause ();
219 int context_info = 0;
220 int pitch = unsmob<Pitch> (event_cause->get_property ("pitch"))->steps ();
221 int prefix_set = scm_to_int (primitive->get_property ("prefix-set"));
223 if (prefix_set & PES_OR_FLEXA)
225 if (!i) // ligature may not start with 2nd head of pes or flexa
226 primitive->warning (_ ("cannot apply `\\~' on first head of ligature"));
227 else if (pitch > prev_pitch) // pes
229 prev_context_info |= PES_LOWER;
230 context_info |= PES_UPPER;
232 else if (pitch < prev_pitch) // flexa
234 prev_context_info |= FLEXA_LEFT;
235 context_info |= FLEXA_RIGHT;
237 else // (pitch == prev_pitch)
238 primitive->warning (_ ("cannot apply `\\~' on heads with identical pitch"));
240 if (prev_prefix_set & DEMINUTUM)
241 context_info |= AFTER_DEMINUTUM;
244 prev_primitive->set_property ("context-info",
245 scm_from_int (prev_context_info));
246 prev_primitive = primitive;
247 prev_prefix_set = prefix_set;
248 prev_context_info = context_info;
252 prev_primitive->set_property ("context-info",
253 scm_from_int (prev_context_info));
257 Gregorian_ligature_engraver::build_ligature (Spanner *ligature,
258 vector<Grob_info> const &primitives)
260 // apply style-independent checking and transformation
261 check_and_fix_all_prefixes (primitives);
262 provide_context_info (primitives);
264 // apply style-specific transformation (including line-up); to be
265 // implemented by subclass
266 transform_heads (ligature, primitives);
270 Gregorian_ligature_engraver::stop_translation_timestep ()
272 Ligature_engraver::stop_translation_timestep ();
273 pes_or_flexa_req_ = 0;
276 // no ADD_ACKNOWLEDGER / ADD_ACKNOWLEDGER / ADD_TRANSLATOR macro calls
277 // since this class is abstract