source file of the GNU LilyPond music typesetter
- (c) 1996--2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1996--2005 Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
#include "event.hh"
#include "warn.hh"
-Moment
-Event::get_length () const
+MAKE_SCHEME_CALLBACK (Event, length_callback, 1);
+SCM
+Event::length_callback (SCM m)
{
- Duration *d = unsmob_duration (get_property ("duration"));
- if (!d)
- {
- Moment m ;
- return m;
- }
- return d->get_length ();
-}
+ Music *me = unsmob_music (m);
+ Duration *d = unsmob_duration (me->get_property ("duration"));
-void
-Event::compress (Moment m)
-{
- Duration *d = unsmob_duration (get_property ("duration"));
+ Moment mom;
if (d)
- set_property ("duration", d ->compressed (m.main_part_).smobbed_copy ());
+ {
+ mom = d->get_length ();
+ }
+ return mom.smobbed_copy ();
}
-
-Pitch
-Event::to_relative_octave (Pitch last)
+Event::Event (SCM i)
+ : Music (i)
{
- Pitch *old_pit = unsmob_pitch (get_property ("pitch"));
- if (old_pit)
+ if (!ly_c_procedure_p (length_callback_))
{
- Pitch new_pit = *old_pit;
- new_pit = new_pit.to_relative_octave (last);
-
- SCM check = get_property ("absolute-octave");
- if (scm_is_number (check) &&
- new_pit.get_octave () != scm_to_int (check))
- {
- 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",
- expected_pit.to_string (),
- new_pit.to_string ()));
- new_pit = expected_pit;
- }
-
- set_property ("pitch", new_pit.smobbed_copy ());
-
- return new_pit;
+ length_callback_ = length_callback_proc;
}
- return last;
-}
-
-Event::Event ()
- : Music ()
-{
}
ADD_MUSIC (Event);
-void
-Key_change_ev::transpose (Pitch p)
-{
- SCM pa = get_property ("pitch-alist");
- set_property ("pitch-alist", ly_transpose_key_alist (pa, p.smobbed_copy ()));
-
- Event::transpose (p);
-}
-
-bool
-alist_equal_p (SCM a, SCM b)
-{
- for (SCM s = a;
- scm_is_pair (s); s = scm_cdr (s))
- {
- SCM key = scm_caar (s);
- SCM val = scm_cdar (s);
- SCM l = scm_assoc (key, b);
-
- if (l == SCM_BOOL_F
- || !ly_c_equal_p ( scm_cdr (l), val))
-
- return false;
- }
- return true;
-}
-ADD_MUSIC (Key_change_ev);