source file of the GNU LilyPond music typesetter
- (c) 2004--2006 Han-Wen Nienhuys
+ (c) 2004--2008 Han-Wen Nienhuys
*/
#include "context.hh"
#include "dispatcher.hh"
#include "lily-guile.hh"
-#include "listener.hh"
#include "music.hh"
#include "music-iterator.hh"
#include "music-sequence.hh"
#include "warn.hh"
+typedef enum Outlet_type
+ {
+ CONTEXT_ONE, CONTEXT_TWO,
+ CONTEXT_SHARED, CONTEXT_SOLO,
+ CONTEXT_NULL, NUM_OUTLETS
+ };
+
+static const char *outlet_names_[NUM_OUTLETS] =
+ {"one", "two", "shared", "solo", "null"};
+
class Part_combine_iterator : public Music_iterator
{
public:
protected:
virtual void derived_substitute (Context *f, Context *t);
virtual void derived_mark () const;
- Part_combine_iterator (Part_combine_iterator const &);
virtual void construct_children ();
virtual Moment pending_moment () const;
SCM split_list_;
+ Stream_event *unisono_event_;
+ Stream_event *solo_one_event_;
+ Stream_event *solo_two_event_;
+ Stream_event *mmrest_event_;
+
enum Status
{
APART,
/*
TODO: this is getting of hand...
*/
- Context_handle one_;
- Context_handle two_;
- Context_handle null_;
- Context_handle shared_;
- Context_handle solo_;
+ Context_handle handles_[NUM_OUTLETS];
- void substitute_both (Context *to1,
- Context *to2);
+ void substitute_both (Outlet_type to1,
+ Outlet_type to2);
- void kill_mmrest (Context *);
+ /* parameter is really Outlet_type */
+ void kill_mmrest (int in);
void chords_together ();
void solo1 ();
void solo2 ();
if (second_iter_)
second_iter_->quit ();
- null_.set_context (0);
- one_.set_context (0);
- two_.set_context (0);
- shared_.set_context (0);
- solo_.set_context (0);
+ // Add listeners to all contexts except Devnull.
+ for (int i = 0; i < NUM_OUTLETS; i++)
+ {
+ Context *c = handles_[i].get_outlet ();
+ if (c->is_alias (ly_symbol2scm ("Voice")))
+ c->event_source ()->remove_listener (GET_LISTENER (set_busy), ly_symbol2scm ("music-event"));
+ handles_[i].set_context (0);
+ }
}
Part_combine_iterator::Part_combine_iterator ()
{
+ mmrest_event_ = 0;
+ unisono_event_ = 0;
+ solo_two_event_ = 0;
+ solo_one_event_= 0;
+
first_iter_ = 0;
second_iter_ = 0;
split_list_ = SCM_EOL;
scm_gc_mark (first_iter_->self_scm ());
if (second_iter_)
scm_gc_mark (second_iter_->self_scm ());
+
+ Stream_event *ptrs[] = {
+ unisono_event_,
+ mmrest_event_,
+ solo_two_event_,
+ solo_one_event_,
+ 0
+ };
+ for (int i = 0; ptrs[i]; i++)
+ if (ptrs[i])
+ scm_gc_mark (ptrs[i]->self_scm ());
}
void
playing_state_ = TOGETHER;
state_ = TOGETHER;
- substitute_both (shared_.get_outlet (), shared_.get_outlet ());
+ substitute_both (CONTEXT_SHARED, CONTEXT_SHARED);
}
}
void
-Part_combine_iterator::kill_mmrest (Context *tg)
+Part_combine_iterator::kill_mmrest (int in)
{
- static Music *mmrest;
- if (!mmrest)
+
+ if (!mmrest_event_)
{
- mmrest = make_music_by_name (ly_symbol2scm ("MultiMeasureRestEvent"));
- mmrest->set_property ("duration", SCM_EOL);
+ mmrest_event_ = new Stream_event (ly_symbol2scm ("multi-measure-rest-event"));
+ mmrest_event_->set_property ("duration", SCM_EOL);
+ mmrest_event_->unprotect ();
}
- mmrest->send_to_context (tg);
+ handles_[in].get_outlet ()->event_source ()->broadcast (mmrest_event_);
}
void
else
{
state_ = SOLO1;
- substitute_both (solo_.get_outlet (),
- null_.get_outlet ());
+ substitute_both (CONTEXT_SOLO, CONTEXT_NULL);
- kill_mmrest (two_.get_outlet ());
- kill_mmrest (shared_.get_outlet ());
+ kill_mmrest (CONTEXT_TWO);
+ kill_mmrest (CONTEXT_SHARED);
if (playing_state_ != SOLO1)
{
- static Music *event;
- if (!event)
- event = make_music_by_name (ly_symbol2scm ("SoloOneEvent"));
+ if (!solo_one_event_)
+ {
+ solo_one_event_ = new Stream_event (ly_symbol2scm ("solo-one-event"));
+ solo_one_event_->unprotect ();
+ }
- event->send_to_context (first_iter_->get_outlet ());
+ first_iter_->get_outlet ()->event_source ()->broadcast (solo_one_event_);
}
playing_state_ = SOLO1;
}
}
void
-Part_combine_iterator::substitute_both (Context *to1,
- Context *to2)
+Part_combine_iterator::substitute_both (Outlet_type to1,
+ Outlet_type to2)
{
- Context *tos[] = {to1, to2};
+ Outlet_type tos[] = {to1, to2};
+
Music_iterator *mis[] = {first_iter_, second_iter_};
- Context_handle *hs[]
- = {
- &null_,
- &one_, &two_,
- &shared_, &solo_,
- 0
- };
for (int i = 0; i < 2; i++)
{
- for (int j = 0; hs[j]; j++)
- if (hs[j]->get_outlet () != tos[i])
- mis[i]->substitute_outlet (hs[j]->get_outlet (), tos[i]);
+ for (int j = 0; j < NUM_OUTLETS; j++)
+ if (j != tos[i])
+ mis[i]->substitute_outlet (handles_[j].get_outlet (), handles_[tos[i]].get_outlet ());
}
- for (int j = 0; hs[j]; j++)
+ for (int j = 0; j < NUM_OUTLETS; j++)
{
- Context *t = hs[j]->get_outlet ();
- if (t != to1 && t != to2)
- kill_mmrest (t);
+ if (j != to1 && j != to2)
+ kill_mmrest (j);
}
}
in the 1st voice, so in that case, we use the second voice
as a basis for events.
*/
- Context *c1 = (last_playing_ == SOLO2) ? null_.get_outlet () : shared_.get_outlet ();
- Context *c2 = (last_playing_ == SOLO2) ? shared_.get_outlet () : null_.get_outlet ();
+ Outlet_type c1 = (last_playing_ == SOLO2) ? CONTEXT_NULL : CONTEXT_SHARED;
+ Outlet_type c2 = (last_playing_ == SOLO2) ? CONTEXT_SHARED : CONTEXT_NULL;
substitute_both (c1, c2);
kill_mmrest ((last_playing_ == SOLO2)
- ? one_.get_outlet () : two_.get_outlet ());
- kill_mmrest (shared_.get_outlet ());
+ ? CONTEXT_ONE : CONTEXT_TWO);
+ kill_mmrest (CONTEXT_SHARED);
if (playing_state_ != UNISONO
&& newstate == UNISONO)
{
- static Music *event;
- if (!event)
- event = make_music_by_name (ly_symbol2scm ("UnisonoEvent"));
+ if (!unisono_event_)
+ {
+ unisono_event_ = new Stream_event (ly_symbol2scm ("unisono-event"));
+ unisono_event_->unprotect ();
+ }
+
Context *out = (last_playing_ == SOLO2 ? second_iter_ : first_iter_)
->get_outlet ();
- event->send_to_context (out);
+ out->event_source ()->broadcast (unisono_event_);
playing_state_ = UNISONO;
}
state_ = newstate;
{
state_ = SOLO2;
- substitute_both (null_.get_outlet (), solo_.get_outlet ());
+ substitute_both (CONTEXT_NULL, CONTEXT_SOLO);
if (playing_state_ != SOLO2)
{
- static Music *event;
- if (!event)
- event = make_music_by_name (ly_symbol2scm ("SoloTwoEvent"));
-
- event->send_to_context (second_iter_->get_outlet ());
+ if (!solo_two_event_)
+ {
+ solo_two_event_ = new Stream_event (ly_symbol2scm ("solo-two-event"));
+ solo_two_event_->unprotect ();
+ }
+
+ second_iter_->get_outlet ()->event_source ()->broadcast (solo_two_event_);
playing_state_ = SOLO2;
}
}
else
{
state_ = APART;
- substitute_both (one_.get_outlet (), two_.get_outlet ());
+ substitute_both (CONTEXT_ONE, CONTEXT_TWO);
}
}
{
start_moment_ = get_outlet ()->now_mom ();
split_list_ = get_music ()->get_property ("split-list");
- SCM lst = get_music ()->get_property ("elements");
-
- SCM props = scm_list_n (/*
- used to have tweaks here.
- */
-
- SCM_UNDEFINED);
- Context *tr
- = get_outlet ()->find_create_context (ly_symbol2scm ("Voice"),
- "shared", props);
+ Context *c = get_outlet ();
- shared_.set_context (tr);
-
- /*
- If we don't, we get a new staff for every Voice.
- */
- set_context (tr);
-
- Context *solo_tr
- = get_outlet ()->find_create_context (ly_symbol2scm ("Voice"),
- "solo", props);
-
- solo_.set_context (solo_tr);
-
- Context *null
- = get_outlet ()->find_create_context (ly_symbol2scm ("Devnull"),
- "", SCM_EOL);
-
- if (!null)
- programming_error ("no Devnull found");
-
- null_.set_context (null);
-
- Context *one = tr->find_create_context (ly_symbol2scm ("Voice"),
- "one", props);
-
- one_.set_context (one);
+ for (int i = 0; i < NUM_OUTLETS; i++)
+ {
+ SCM type = (i == CONTEXT_NULL) ? ly_symbol2scm ("Devnull") : ly_symbol2scm ("Voice");
+ /* find context below c: otherwise we may create new staff for each voice */
+ c = c->find_create_context (type, outlet_names_[i], SCM_EOL);
+ handles_[i].set_context (c);
+ if (c->is_alias (ly_symbol2scm ("Voice")))
+ c->event_source ()->add_listener (GET_LISTENER (set_busy), ly_symbol2scm ("music-event"));
+ }
+ SCM lst = get_music ()->get_property ("elements");
+ Context *one = handles_[CONTEXT_ONE].get_outlet ();
set_context (one);
first_iter_ = unsmob_iterator (get_iterator (unsmob_music (scm_car (lst))));
-
- Context *two = tr->find_create_context (ly_symbol2scm ("Voice"),
- "two", props);
- two_.set_context (two);
+ Context *two = handles_[CONTEXT_TWO].get_outlet ();
set_context (two);
second_iter_ = unsmob_iterator (get_iterator (unsmob_music (scm_cadr (lst))));
- set_context (tr);
-
char const *syms[]
= {
"Stem",
0
};
- // Add listeners to all contexts except Devnull.
- Context *contexts[] = {one, two, solo_tr, tr, 0};
- for (int i = 0; contexts[i]; i++)
- {
- contexts[i]->event_source ()->add_listener (GET_LISTENER (set_busy), ly_symbol2scm ("MusicEvent"));
- }
-
for (char const **p = syms; *p; p++)
{
SCM sym = ly_symbol2scm (*p);
return;
Stream_event *e = unsmob_stream_event (se);
- SCM mus = e->get_property ("music");
- Music *m = unsmob_music (mus);
- assert (m);
- if (m->is_mus_type ("note-event") || m->is_mus_type ("cluster-note-event"))
+ if (e->in_event_class ("note-event") || e->in_event_class ("cluster-note-event"))
busy_ = true;
}
/*
-* Processes a moment in an iterator, and returns whether any new music was reported.
+ Processes a moment in an iterator, and returns whether any new music
+ was reported.
*/
bool
Part_combine_iterator::try_process (Music_iterator *i, Moment m)
Moment now = get_outlet ()->now_mom ();
Moment *splitm = 0;
+ /* This is needed if construct_children was called before iteration
+ started */
+ if (start_moment_.main_part_.is_infinity () && start_moment_ < 0)
+ start_moment_ = now;
+
for (; scm_is_pair (split_list_); split_list_ = scm_cdr (split_list_))
{
splitm = unsmob_moment (scm_caar (split_list_));
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