source file of the GNU LilyPond music typesetter
- (c) 1997--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
+ (c) 1997--2009 Han-Wen Nienhuys <hanwen@xs4all.nl>
*/
#include "music.hh"
#include "context.hh"
#include "dispatcher.hh"
#include "duration.hh"
-#include "input-smob.hh"
+#include "input.hh"
#include "international.hh"
#include "ly-smobs.icc"
#include "main.hh"
#include "music-sequence.hh"
-#include "pitch.hh"
#include "score.hh"
#include "warn.hh"
/*
- Music is anything that has duration and supports both time compression
- and transposition.
+ Music is anything that has (possibly zero) duration and supports
+ both time compression and transposition.
In Lily, everything that can be thought to have a length and a pitch
- (which has a duration which can be transposed) is considered "music",
+ (which has a duration which can be transposed) is considered "music".
*/
bool
Music::internal_is_music_type (SCM k) const
void
Music::type_check_assignment (SCM s, SCM v) const
{
- if (!::type_check_assignment (s, v, ly_symbol2scm ("music-type?")))
- abort ();
+ ::type_check_assignment (s, v, ly_symbol2scm ("music-type?"));
}
Music::Music (Music const &m)
Pitch expected_pit (scm_to_int (check),
new_pit.get_notename (),
new_pit.get_alteration ());
- origin ()->warning (_f ("octave check failed; expected \"%s\", found: %s",
+ origin ()->warning (_f ("octave check failed; expected \"%s\", found: \"%s\"",
expected_pit.to_string (),
new_pit.to_string ()));
new_pit = expected_pit;
set_property ("duration", d->compressed (factor.main_part_).smobbed_copy ());
}
+/*
+ This mutates alist. Hence, make sure that it is not shared
+*/
void
-Music::transpose (Pitch delta)
+transpose_mutable (SCM alist, Pitch delta)
{
- if (to_boolean (get_property ("untransposable")))
- return;
-
- for (SCM s = this->get_property_alist (true); scm_is_pair (s); s = scm_cdr (s))
+ for (SCM s = alist; scm_is_pair (s); s = scm_cdr (s))
{
SCM entry = scm_car (s);
+ SCM prop = scm_car (entry);
SCM val = scm_cdr (entry);
-
+ SCM new_val = val;
+
if (Pitch *p = unsmob_pitch (val))
{
Pitch transposed = p->transposed (delta);
- scm_set_cdr_x (entry, transposed.smobbed_copy ());
-
- if (abs (transposed.get_alteration ()) > DOUBLE_SHARP)
+ if (transposed.get_alteration ().abs () > Rational (1,1))
{
warning (_f ("transposition by %s makes alteration larger than double",
delta.to_string ()));
}
+
+ new_val = transposed.smobbed_copy ();
+ }
+ else if (prop == ly_symbol2scm ("element"))
+ {
+ if (Music *m = unsmob_music (val))
+ m->transpose (delta);
}
+ else if (prop == ly_symbol2scm ("elements"))
+ transpose_music_list (val, delta);
+ else if (prop == ly_symbol2scm ("pitch-alist") &&
+ scm_is_pair (val))
+ new_val = ly_transpose_key_alist (val, delta.smobbed_copy ());
+
+ if (val != new_val)
+ scm_set_cdr_x (entry , new_val);
}
+}
- SCM elt = get_property ("element");
-
- if (Music *m = unsmob_music (elt))
- m->transpose (delta);
-
- transpose_music_list (get_property ("elements"), delta);
+void
+Music::transpose (Pitch delta)
+{
+ if (to_boolean (get_property ("untransposable")))
+ return;
- /*
- UGH - how do this more generically?
- */
- SCM pa = get_property ("pitch-alist");
- if (scm_is_pair (pa))
- set_property ("pitch-alist", ly_transpose_key_alist (pa, delta.smobbed_copy ()));
+ transpose_mutable (mutable_property_alist_, delta);
}
void
return ip ? ip : &dummy_input_global;
}
+/*
+ ES TODO: This method should probably be reworked or junked.
+*/
+Stream_event *
+Music::to_event () const
+{
+ SCM class_name = ly_camel_case_2_lisp_identifier (get_property ("name"));
+
+ // catch programming mistakes.
+ if (!internal_is_music_type (class_name))
+ {
+ programming_error ("Not a music type");
+ }
+
+ Stream_event *e = new Stream_event (class_name, mutable_property_alist_);
+ Moment length = get_length ();
+ if (length.to_bool ())
+ e->set_property ("length", length.smobbed_copy ());
+
+ // articulations as events.
+ SCM art_mus = e->get_property ("articulations");
+ if (scm_is_pair (art_mus))
+ {
+ SCM art_ev = SCM_EOL;
+ for (; scm_is_pair (art_mus); art_mus = scm_cdr (art_mus))
+ {
+ Music *m = unsmob_music (scm_car (art_mus));
+ SCM ev = m ? m->to_event ()->unprotect () : scm_car (art_mus);
+ art_ev = scm_cons (ev, art_ev);
+ }
+ e->set_property ("articulations", scm_reverse_x (art_ev, SCM_EOL));
+ }
+
+ /*
+ ES TODO: This is a temporary fix. Stream_events should not be
+ aware of music.
+ */
+ e->set_property ("music-cause", self_scm ());
+
+ return e;
+}
+
void
Music::send_to_context (Context *c)
{
- send_stream_event (c, "MusicEvent", origin (),
- ly_symbol2scm("music"), self_scm (), 0);
+ Stream_event *ev = to_event ();
+ c->event_source ()->broadcast (ev);
+ ev->unprotect ();
}
Music *