#include "warn.hh"
/*
- Music is anything that has (possibly zero) duration and supports
- both time compression and transposition.
+ Music is anything that has 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
set_property ("duration", d->compressed (factor.main_part_).smobbed_copy ());
}
-/*
-TODO: make transposition non-destructive
-*/
-SCM
-transpose_mutable (SCM alist, Pitch delta)
+void
+Music::transpose (Pitch delta)
{
- SCM retval = SCM_EOL;
+ if (to_boolean (get_property ("untransposable")))
+ return;
- for (SCM s = alist; scm_is_pair (s); s = scm_cdr (s))
+ for (SCM s = this->get_property_alist (true); scm_is_pair (s); s = scm_cdr (s))
{
SCM entry = scm_car (s);
- SCM prop = scm_car (entry);
SCM val = scm_cdr (entry);
if (Pitch *p = unsmob_pitch (val))
delta.to_string ()));
}
}
- 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))
- entry = scm_cons (prop, ly_transpose_key_alist (val, delta.smobbed_copy ()));
- retval = scm_cons (entry, retval);
}
- return scm_reverse_x (retval, SCM_EOL);
-}
+ SCM elt = get_property ("element");
-void
-Music::transpose (Pitch delta)
-{
- if (to_boolean (get_property ("untransposable")))
- return;
+ if (Music *m = unsmob_music (elt))
+ m->transpose (delta);
+
+ transpose_music_list (get_property ("elements"), delta);
- mutable_property_alist_ = transpose_mutable (mutable_property_alist_, delta);
+ /*
+ 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 ()));
}
void
return ip ? ip : &dummy_input_global;
}
-/*
- ES TODO: This method should probably be reworked or junked.
-*/
-Stream_event *
-Music::to_event () const
-{
- /* UGH. Temp hack */
- SCM orig_sym = get_property ("name");
- char out[200];
- string in = ly_symbol2string (orig_sym);
- /* don't add '-' before first character */
- out[0] = tolower (in[0]);
- size_t outpos = 1;
- for (size_t inpos = 1; inpos < in.size () && outpos < 190; inpos++)
- {
- if (isupper (in[inpos]))
- out[outpos++] = '-';
- out[outpos++] = tolower (in[inpos]);
- }
- out[outpos] = 0;
- SCM class_name = ly_symbol2scm (out);
-
- // catch mistakes.
- assert (internal_is_music_type (class_name));
-
- 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 ());
-
- /*
- 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)
{
- /*
- TODO: This is a work-in-progress solution. Send the event so it
- can be read both by old-style translators and the new ones.
- */
- send_stream_event (c, "OldMusicEvent", origin (),
+ send_stream_event (c, "MusicEvent",
ly_symbol2scm("music"), self_scm (), 0);
-
- Stream_event *ev = to_event ();
- c->event_source ()->broadcast (ev);
- ev->unprotect ();
}
Music *