source file of the GNU LilyPond music typesetter
- (c) 1999--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1999--2005 Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
-#include "auto-change-music.hh"
-#include "auto-change-iterator.hh"
-#include "translator-group.hh"
-#include "musical-request.hh"
+#include "context.hh"
+#include "event.hh"
+#include "music-wrapper-iterator.hh"
+#include "direction.hh"
+
+class Auto_change_iterator : public Music_wrapper_iterator
+{
+public:
+ DECLARE_SCHEME_CALLBACK (constructor, ());
+
+ Auto_change_iterator ();
+
+protected:
+ virtual void do_quit ();
+ virtual void construct_children ();
+ virtual void process (Moment);
+ Array<Pitch> pending_pitch (Moment)const;
+private:
+ SCM split_list_;
+ Direction where_dir_;
+ void change_to (Music_iterator* , SCM, String);
+ Moment start_moment_;
+
+ Interpretation_context_handle up_;
+ Interpretation_context_handle down_;
+
+};
void
-Auto_change_iterator::change_to (Music_iterator *it, String to_type,
+Auto_change_iterator::change_to (Music_iterator *it, SCM to_type_sym,
String to_id)
{
- Translator_group * current = it->report_to_l ();
- Translator_group * last = 0;
+ Context * current = it->get_outlet ();
+ Context * last = 0;
/*
Cut & Paste from Change_iterator (ugh).
If \translator Staff = bass, then look for Staff = *
*/
- while (current && current->type_str_ != to_type)
+ while (current && !current->is_alias (to_type_sym))
{
last = current;
- current = current->daddy_trans_l_;
+ current = current->get_parent_context ();
}
- if (current && current->id_str_ == to_id)
+ if (current && current->id_string () == to_id)
{
String msg;
msg += _ ("Can't switch translators, I'm there already");
if (current)
if (last)
{
- Translator_group * dest =
- it->report_to_l ()->find_create_translator_l (to_type, to_id);
- current->remove_translator_p (last);
- dest->add_group_translator (last);
+ Context * dest =
+ it->get_outlet ()->find_create_context (to_type_sym, to_id, SCM_EOL);
+ current->remove_context (last);
+ dest->add_context (last);
}
else
{
We could change the current translator's id, but that would make
errors hard to catch
- last->translator_id_str_ = change_l ()->change_to_id_str_;
*/
- // error (_ ("I'm one myself"));
}
else
- ; // error (_ ("none of these in my family"));
+ ;
}
-/*
- Look ahead to find first pitches to determine staff position.
- WARNING: this means that
-
- \autochange Staff \notes { .... \context Staff = otherstaff { .. } .. }
-
- will confuse the autochanger, since it will not notice that the
- music for OTHERSTAFF is not his.
-
- PRECONDITION: this->ok() holds.
-*/
-Array<Musical_pitch>
-Auto_change_iterator::pending_pitch (Moment m) const
+void
+Auto_change_iterator::process (Moment m)
{
- Music_iterator * iter = child_iter_p_ ->clone ();
- Array<Musical_pitch> ps;
- while (1)
+ Music_wrapper_iterator::process (m);
+
+ Moment now = get_outlet ()->now_mom ();
+ Moment *splitm = 0;
+
+ for (; scm_is_pair (split_list_); split_list_ = scm_cdr (split_list_))
{
- SCM muses = iter->get_music (m);
- for (SCM s = muses; gh_pair_p (s); s=gh_cdr (s))
- if (Note_req* nr = dynamic_cast<Note_req*> (unsmob_music (gh_car (s))))
- {
- ps.push (*unsmob_pitch (nr->get_mus_property ("pitch")));
- }
-
- if (ps.size ())
- break;
-
- iter->skip (m);
- if (!iter->ok())
- break;
+ splitm = unsmob_moment (scm_caar (split_list_));
+ if ((*splitm + start_moment_) > now)
+ break ;
+
+ SCM tag = scm_cdar (split_list_);
+ Direction d = to_dir (tag);
- m = iter->pending_moment ();
+ if (d && d != where_dir_)
+ {
+ where_dir_ = d;
+ String to_id = (d >= 0) ? "up" : "down";
+ change_to (child_iter_,
+ ly_symbol2scm ("Staff"),
+ to_id);
+ }
}
+}
- delete iter;
- return ps;
+Auto_change_iterator::Auto_change_iterator ()
+{
+ where_dir_ = CENTER;
+ split_list_ = SCM_EOL;
}
void
-Auto_change_iterator::process (Moment m)
+Auto_change_iterator::construct_children ()
{
- /*
- first we get the pitches, then we do the real work.
- Music_wrapper_iterator::process() might process (and throw away)
- pitches we need. */
- Array<Musical_pitch> ps = pending_pitch (m);
+ split_list_ = get_music ()->get_property ("split-list");
+ start_moment_ = get_outlet ()->now_mom ();
- Music_wrapper_iterator::process (m);
- if (ps.size ())
- {
- Musical_pitch p = ps[0];
- Direction s = Direction (sign(p.steps ()));
- if (s != where_dir_)
- {
- where_dir_ = s;
- String to_id = (s >= 0) ? "up" : "down";
- Auto_change_music const * auto_mus = dynamic_cast<Auto_change_music const* > (music_l_);
+ SCM props = get_outlet()->get_property ("trebleStaffProperties");
+ Context *up = get_outlet()->find_create_context (ly_symbol2scm ("Staff"),
+ "up", props);
+
+ props = get_outlet()->get_property ("bassStaffProperties");
+ Context *down = get_outlet()->find_create_context (ly_symbol2scm ("Staff"),
+ "down", props);
+
+ up_.set_context (up);
+ down_.set_context (down);
+
+ Context *voice = up->find_create_context (ly_symbol2scm ("Voice"),
+ "", SCM_EOL);
+ set_context (voice);
+ Music_wrapper_iterator::construct_children ();
- String wh = ly_scm2string (auto_mus->get_mus_property ("what"));
- change_to (child_iter_p_, wh, to_id);
- }
- }
}
-Auto_change_iterator::Auto_change_iterator( )
+void
+Auto_change_iterator::do_quit()
{
- where_dir_ = CENTER;
+ up_.set_context (0);
+ down_.set_context (0);
+
}
-
-IMPLEMENT_CTOR_CALLBACK(Auto_change_iterator);
+IMPLEMENT_CTOR_CALLBACK (Auto_change_iterator);
projects / lilypond.git / blobdiff