source file of the GNU LilyPond music typesetter
- (c) 2001--2005 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 2001--2007 Han-Wen Nienhuys <hanwen@xs4all.nl>
*/
#include "context.hh"
#include "grob.hh"
#include "warn.hh"
+struct Grob_pq_entry
+{
+ Grob *grob_;
+ Moment end_;
+};
+
+bool
+operator< (Grob_pq_entry const &a, Grob_pq_entry const &b)
+{
+ return a.end_ < b.end_;
+}
+
class Grob_pq_engraver : public Engraver
{
public:
TRANSLATOR_DECLARATIONS (Grob_pq_engraver);
protected:
virtual void initialize ();
- virtual void acknowledge_grob (Grob_info);
- virtual void start_translation_timestep ();
- virtual void stop_translation_timestep ();
+ DECLARE_ACKNOWLEDGER (grob);
+ void start_translation_timestep ();
+ void stop_translation_timestep ();
+ void process_acknowledged ();
+
+ vector<Grob_pq_entry> started_now_;
};
Grob_pq_engraver::Grob_pq_engraver ()
context ()->set_property ("busyGrobs", SCM_EOL);
}
-LY_DEFINE (ly_grob_pq_less_p, "ly:grob-pq-less?",
+LY_DEFINE (ly_grob_pq_less_p, "ly:grob-pq<?",
2, 0, 0, (SCM a, SCM b),
"Compare 2 grob priority queue entries. Internal")
{
void
Grob_pq_engraver::acknowledge_grob (Grob_info gi)
{
- Music *m = gi.music_cause ();
+ Stream_event *ev = gi.event_cause ();
- if (m
+ if (ev
&& !gi.grob ()->internal_has_interface (ly_symbol2scm ("multi-measure-interface")))
{
Moment n = now_mom ();
- Moment l = m->get_length ();
+ Moment l = get_event_length (ev);
if (!l.to_bool ())
return;
}
Moment end = n + l;
- SCM lst = scm_acons (end.smobbed_copy (),
- gi.grob ()->self_scm (),
- SCM_EOL);
- SCM busy = get_property ("busyGrobs");
- busy = scm_merge_x (lst, busy, ly_grob_pq_less_p_proc);
- context ()->set_property ("busyGrobs", busy);
+ Grob_pq_entry e;
+ e.grob_ = gi.grob ();
+ e.end_ = end;
+
+ started_now_.push_back (e);
}
}
+void
+Grob_pq_engraver::process_acknowledged ()
+{
+ vector_sort (started_now_, less<Grob_pq_entry> ());
+ SCM lst = SCM_EOL;
+ SCM *tail = &lst;
+ for (vsize i = 0; i < started_now_.size (); i++)
+ {
+ *tail = scm_acons (started_now_[i].end_.smobbed_copy (),
+ started_now_[i].grob_->self_scm (),
+ SCM_EOL);
+ tail = SCM_CDRLOC (*tail);
+ }
+
+ SCM busy = get_property ("busyGrobs");
+ busy = scm_merge_x (lst, busy, ly_grob_pq_less_p_proc);
+ context ()->set_property ("busyGrobs", busy);
+
+ started_now_.clear ();
+}
+
void
Grob_pq_engraver::stop_translation_timestep ()
{
SCM start_busy = get_property ("busyGrobs");
SCM busy = start_busy;
while (scm_is_pair (busy) && *unsmob_moment (scm_caar (busy)) == now)
- {
- busy = scm_cdr (busy);
- }
+ busy = scm_cdr (busy);
- if (start_busy != busy)
- context ()->set_property ("busyGrobs", busy);
}
void
context ()->set_property ("busyGrobs", busy);
}
+#include "translator.icc"
+ADD_ACKNOWLEDGER (Grob_pq_engraver, grob);
ADD_TRANSLATOR (Grob_pq_engraver,
- /* descr */ "Administrate when certain grobs (eg. note heads) stop playing; this \
-engraver is a sort-of a failure, since it doesn't handle all sorts of \
-borderline cases very well. \
-",
-
- /* creats*/ "",\
- /* accepts */ "",\
- /* acks */ "grob-interface",\
- /* reads */ "busyGrobs",\
+ /* doc */ "Administrate when certain grobs (eg. note heads) stop playing",
+ /* create */ "",
+ /* read */ "busyGrobs",
/* write */ "busyGrobs");