source file of the GNU LilyPond music typesetter
- (c) 1997--1999 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1997--2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
-#include "key-engraver.hh"
-#include "key-item.hh"
-#include "command-request.hh"
-#include "local-key-engraver.hh"
-#include "musical-request.hh"
-#include "local-key-item.hh"
-#include "bar.hh"
-#include "time-description.hh"
-Key_engraver::Key_engraver ()
+
+#include "event.hh"
+#include "item.hh"
+#include "bar-line.hh"
+#include "staff-symbol-referencer.hh"
+#include "context.hh"
+#include "engraver.hh"
+#include "pitch.hh"
+#include "protected-scm.hh"
+#include "clef.hh"
+
+/*
+ TODO: The representation of key sigs is all fucked.
+ */
+
+/**
+ Make the key signature.
+ */
+class Key_engraver : public Engraver
+{
+ void create_key (bool);
+ void read_ev (Music const * r);
+ Music * key_ev_;
+ Item * item_;
+
+public:
+ TRANSLATOR_DECLARATIONS (Key_engraver);
+
+protected:
+ virtual void initialize ();
+ virtual void finalize ();
+ virtual bool try_music (Music *ev);
+ virtual void stop_translation_timestep ();
+ virtual void start_translation_timestep ();
+ virtual void process_music ();
+ virtual void acknowledge_grob (Grob_info);
+};
+
+
+void
+Key_engraver::finalize ()
{
- item_p_ = 0;
- do_post_move_processing ();
}
-bool
-Key_engraver::key_changed_b () const
+
+Key_engraver::Key_engraver ()
{
- return keyreq_l_ ;
+ key_ev_ = 0;
+ item_ = 0;
}
+
void
-Key_engraver::create_key ()
+Key_engraver::create_key (bool def)
{
- if (!item_p_)
+ if (!item_)
{
- item_p_ = new Key_item;
- item_p_->set_elt_property (break_priority_scm_sym, gh_int2scm(-1)); // ugh
- item_p_->multi_octave_b_ = key_.multi_octave_b_;
- announce_element (Score_element_info (item_p_,keyreq_l_));
-
+ item_ = make_item ("KeySignature", key_ev_ ? key_ev_->self_scm () : SCM_EOL);
- for (int i = 0; i < accidental_idx_arr_.size(); i++)
- {
- Musical_pitch m_l =accidental_idx_arr_[i];
- int a =m_l.accidental_i_;
- if (key_.multi_octave_b_)
- item_p_->add (m_l.steps (), a);
- else
- item_p_->add (m_l.notename_i_, a);
- }
+ item_->set_property ("c0-position",
+ get_property ("middleCPosition"));
+
+ if (to_boolean (get_property ("printKeyCancellation")))
+ item_->set_property ("old-accidentals", get_property ("lastKeySignature"));
+ item_->set_property ("new-accidentals", get_property ("keySignature"));
+ }
- for (int i = 0 ; i < old_accidental_idx_arr_.size(); i++)
- {
- Musical_pitch m_l =old_accidental_idx_arr_[i];
- int a =m_l.accidental_i_;
- if (key_.multi_octave_b_)
- item_p_->add_old (m_l.steps (), a);
- else
- item_p_->add_old (m_l.notename_i_, a);
- }
+ if (!def)
+ {
+ SCM vis = get_property ("explicitKeySignatureVisibility");
+ if (ly_c_procedure_p (vis))
+ item_->set_property ("break-visibility",vis);
}
}
bool
-Key_engraver::do_try_music (Music * req_l)
+Key_engraver::try_music (Music * ev)
{
- if (Key_change_req *kc = dynamic_cast <Key_change_req *> (req_l))
+ if (ev->is_mus_type ("key-change-event"))
{
- if (keyreq_l_)
- warning (_ ("FIXME: key change merge"));
- keyreq_l_ = kc;
- read_req (keyreq_l_);
+ /* do this only once, just to be on the safe side. */
+ if (!key_ev_)
+ {
+ key_ev_ = ev;
+ read_ev (key_ev_);
+ }
return true;
}
return false;
}
+
void
-Key_engraver::acknowledge_element (Score_element_info info)
+Key_engraver::acknowledge_grob (Grob_info info)
{
- if (dynamic_cast <Clef_change_req *> (info.req_l_))
+ if (Clef::has_interface (info.grob_))
{
- SCM c = get_property ("createKeyOnClefChange", 0);
- if (gh_boolean_p (c) && gh_scm2bool (c))
- create_key ();
- }
- else if (dynamic_cast<Bar *> (info.elem_l_)
- && accidental_idx_arr_.size ())
- {
- bool def = (!item_p_);
- create_key ();
- if (def)
+ SCM c = get_property ("createKeyOnClefChange");
+ if (to_boolean (c))
{
- item_p_->set_elt_property (visibility_lambda_scm_sym,
- ly_ch_C_eval_scm ("postbreak_only_visibility"));
+ create_key (false);
}
}
-
-}
-
-void
-Key_engraver::do_process_requests ()
-{
- if (keyreq_l_)
+ else if (Bar_line::has_interface (info.grob_)
+ && ly_c_pair_p (get_property ("keySignature")))
{
- create_key ();
+ create_key (true);
}
}
+
void
-Key_engraver::do_pre_move_processing ()
-{
- if (item_p_)
- {
- typeset_element (item_p_);
- item_p_ = 0;
- }
+Key_engraver::process_music ()
+{
+ if (key_ev_ ||
+ get_property ("lastKeySignature") != get_property ("keySignature"))
+ create_key (false);
}
-/*
- TODO Slightly hairy.
- */
void
-Key_engraver::read_req (Key_change_req const * r)
+Key_engraver::stop_translation_timestep ()
{
- old_accidental_idx_arr_ = accidental_idx_arr_;
- key_.clear ();
- SCM prop = get_property ("keyOctaviation", 0);
-
- key_.multi_octave_b_ = gh_boolean_p (prop) && gh_scm2bool (prop);
-
- accidental_idx_arr_.clear ();
+ item_ = 0;
+ context ()->set_property ("lastKeySignature", get_property ("keySignature"));
+}
- if (r->key_.ordinary_key_b_)
- {
- int no_of_acc = r->key_.ordinary_accidentals_i ();
- // Hmm, can't these be handled/constructed by Key_change_req?
- if (no_of_acc < 0)
- {
- int accidental = 6 ; // First accidental: bes
- for ( ; no_of_acc < 0 ; no_of_acc++ )
- {
- Musical_pitch m;
- m.accidental_i_ = -1;
- m.notename_i_ = accidental;
- if (key_.multi_octave_b_)
- key_.set (m);
- else
- key_.set (m.notename_i_, m.accidental_i_);
- accidental_idx_arr_.push (m);
-
- accidental = (accidental + 3) % 7 ;
- }
- }
- else
- {
- int accidental = 3 ; // First accidental: fis
- for ( ; no_of_acc > 0 ; no_of_acc-- )
- {
- Musical_pitch m;
- m.accidental_i_ = 1;
- m.notename_i_ = accidental;
- if (key_.multi_octave_b_)
- key_.set (m);
- else
- key_.set (m.notename_i_, m.accidental_i_);
- accidental_idx_arr_.push (m);
-
- accidental = (accidental + 4) % 7 ;
- }
- }
- }
- else // Special key
+void
+Key_engraver::read_ev (Music const * r)
+{
+ SCM p = r->get_property ("pitch-alist");
+ if (!ly_c_pair_p (p))
+ return;
+
+ SCM n = scm_list_copy (p);
+ SCM accs = SCM_EOL;
+ for (SCM s = get_property ("keyAccidentalOrder");
+ ly_c_pair_p (s); s = ly_cdr (s))
{
- for (int i = 0; i < r->key_.pitch_arr_.size (); i ++)
+ if (ly_c_pair_p (scm_member (ly_car (s), n)))
{
- Musical_pitch m_l =r->key_.pitch_arr_[i];
- if (key_.multi_octave_b_)
- key_.set (m_l);
- else
- key_.set (m_l.notename_i_, m_l.accidental_i_);
-
- accidental_idx_arr_.push (m_l);
+ accs = scm_cons (ly_car (s), accs);
+ n = scm_delete_x (ly_car (s), n);
}
}
+
+ for (SCM s = n ; ly_c_pair_p (s); s = ly_cdr (s))
+ if (ly_scm2int (ly_cdar (s)))
+ accs = scm_cons (ly_car (s), accs);
+
+ context ()->set_property ("keySignature", accs);
+ context ()->set_property ("tonic" ,
+ r->get_property ("tonic"));
}
+
void
-Key_engraver::do_post_move_processing ()
+Key_engraver::start_translation_timestep ()
{
- keyreq_l_ = 0;
- old_accidental_idx_arr_.clear ();
+ key_ev_ = 0;
}
-ADD_THIS_TRANSLATOR (Key_engraver);
+
+void
+Key_engraver::initialize ()
+{
+ context ()->set_property ("keySignature", SCM_EOL);
+ context ()->set_property ("lastKeySignature", SCM_EOL);
+
+ Pitch p (0,0,0);
+ context ()->set_property ("tonic", p.smobbed_copy ());
+
+}
+
+
+ENTER_DESCRIPTION (Key_engraver,
+/* descr */ "",
+/* creats*/ "KeySignature",
+/* accepts */ "key-change-event",
+/* acks */ "bar-line-interface clef-interface",
+/* reads */ "keySignature printKeyCancellation lastKeySignature explicitKeySignatureVisibility createKeyOnClefChange keyAccidentalOrder keySignature",
+/* write */ "lastKeySignature tonic keySignature");