2 This file is part of LilyPond, the GNU music typesetter.
4 Copyright (C) 2004--2009 Han-Wen Nienhuys <hanwen@xs4all.nl>
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 "music-wrapper-iterator.hh"
23 #include "dispatcher.hh"
25 #include "international.hh"
26 #include "lily-guile.hh"
27 #include "music-sequence.hh"
31 class Quote_iterator : public Music_wrapper_iterator
35 Moment vector_moment (int idx) const;
36 Context_handle quote_outlet_;
44 SCM transposed_musics_;
46 DECLARE_SCHEME_CALLBACK (constructor, ());
47 bool quote_ok () const;
48 bool accept_music_type (Stream_event *) const;
51 virtual void derived_mark () const;
52 virtual void construct_children ();
53 virtual Moment pending_moment () const;
54 virtual void process (Moment);
55 virtual void do_quit ();
56 virtual bool ok () const;
60 Quote_iterator::do_quit ()
62 Music_wrapper_iterator::do_quit ();
63 quote_outlet_.set_context (0);
67 Quote_iterator::accept_music_type (Stream_event *ev) const
69 for (SCM accept = get_outlet ()->get_property ("quotedEventTypes");
70 scm_is_pair (accept); accept = scm_cdr (accept))
72 if (ev->internal_in_event_class (scm_car (accept)))
79 Quote_iterator::derived_mark () const
81 Music_wrapper_iterator::derived_mark ();
82 scm_gc_mark (transposed_musics_);
85 Quote_iterator::Quote_iterator ()
87 transposed_musics_ = SCM_EOL;
88 event_vector_ = SCM_EOL;
94 binsearch_scm_vector (SCM vec, SCM key, bool (*is_less) (SCM a, SCM b))
97 int hi = scm_c_vector_length (vec);
102 int cmp = (lo + hi) / 2;
104 SCM when = scm_caar (scm_c_vector_ref (vec, cmp));
105 bool result = (*is_less) (key, when);
117 Quote_iterator::construct_children ()
119 Music_wrapper_iterator::construct_children ();
121 SCM name = get_music ()->get_property ("quoted-context-type");
122 SCM id = get_music ()->get_property ("quoted-context-id");
124 if (scm_is_string (id)
125 && scm_is_symbol (name))
127 Context *cue_context = get_outlet ()->find_create_context (name,
128 ly_scm2string (id), SCM_EOL);
129 quote_outlet_.set_context (cue_context);
132 quote_outlet_.set_context (get_outlet ());
134 event_vector_ = get_music ()->get_property ("quoted-events");
137 We have to delay initting event_idx_ , since we have to
138 take starting grace notes into account. Those may offset
145 Quote_iterator::ok () const
148 Music_wrapper_iterator::ok ()
153 Quote_iterator::quote_ok () const
155 return (event_idx_ >= 0
156 && scm_is_vector (event_vector_)
157 && event_idx_ <= end_idx_
160 Don't quote the grace notes leading to an unquoted note.
162 && vector_moment (event_idx_).main_part_ < stop_moment_.main_part_);
166 Quote_iterator::pending_moment () const
169 infty.set_infinite (1);
172 if (Music_wrapper_iterator::ok ())
173 m = min (m, Music_wrapper_iterator::pending_moment ());
176 In case event_idx_ < 0, we're not initted yet, and the wrapped
177 music expression determines the starting moment.
180 m = min (m, vector_moment (event_idx_) - start_moment_);
186 Quote_iterator::vector_moment (int idx) const
188 SCM entry = scm_c_vector_ref (event_vector_, idx);
189 return *unsmob_moment (scm_caar (entry));
193 Quote_iterator::process (Moment m)
195 if (Music_wrapper_iterator::ok ())
196 Music_wrapper_iterator::process (m);
198 if (!scm_is_vector (event_vector_))
203 event_idx_ = binsearch_scm_vector (event_vector_,
204 get_outlet ()->now_mom ().smobbed_copy (),
206 start_moment_ = get_outlet ()->now_mom () - music_start_mom ();
207 stop_moment_ = start_moment_ + get_music ()->get_length ();
209 end_idx_ = binsearch_scm_vector (event_vector_,
210 stop_moment_.smobbed_copy (),
215 while (event_idx_ <= end_idx_)
217 Moment em = vector_moment (event_idx_);
229 SCM entry = scm_c_vector_ref (event_vector_, event_idx_);
230 Pitch *quote_pitch = unsmob_pitch (scm_cdar (entry));
233 The pitch that sounds like central C
235 Pitch *me_pitch = unsmob_pitch (get_music ()->get_property ("quoted-transposition"));
237 me_pitch = unsmob_pitch (get_outlet ()->get_property ("instrumentTransposition"));
239 for (SCM s = scm_cdr (entry); scm_is_pair (s); s = scm_cdr (s))
241 SCM ev_acc = scm_car (s);
243 Stream_event *ev = unsmob_stream_event (scm_car (ev_acc));
245 programming_error ("no music found in quote");
246 else if (accept_music_type (ev))
248 /* create a transposed copy if necessary */
249 if (quote_pitch || me_pitch)
257 Pitch diff = pitch_interval (qp, mp);
260 transpose_mutable (ev->get_property_alist (true), diff);
261 transposed_musics_ = scm_cons (ev->unprotect (), transposed_musics_);
263 quote_outlet_.get_outlet ()->event_source ()->broadcast (ev);
271 IMPLEMENT_CTOR_CALLBACK (Quote_iterator);