source file of the GNU LilyPond music typesetter
- (c) 1998--1999 Jan Nieuwenhuizen <janneke@gnu.org>
+ (c) 1998--2004 Jan Nieuwenhuizen <janneke@gnu.org>
*/
-#include "chord-name-engraver.hh"
+#include "engraver.hh"
#include "chord-name.hh"
-#include "musical-request.hh"
+#include "event.hh"
#include "paper-def.hh"
-#include "lookup.hh"
+#include "font-interface.hh"
#include "paper-def.hh"
-#include "main.hh"
#include "dimensions.hh"
-#include "text-item.hh"
+#include "item.hh"
+#include "pitch.hh"
+#include "protected-scm.hh"
+#include "translator-group.hh"
+#include "warn.hh"
-ADD_THIS_TRANSLATOR (Chord_name_engraver);
+class Chord_name_engraver : public Engraver
+{
+ TRANSLATOR_DECLARATIONS( Chord_name_engraver);
+protected:
+ virtual void stop_translation_timestep ();
+ virtual void process_music ();
+ virtual bool try_music (Music *);
+
+private:
+ void add_note (Music *);
+
+ Item* chord_name_;
+ Link_array<Music> notes_;
+
+ Protected_scm last_chord_;
+};
Chord_name_engraver::Chord_name_engraver ()
{
- chord_name_p_ = 0;
- tonic_req_ = 0;
- inversion_req_ = 0;
- bass_req_ = 0;
+ chord_name_ = 0;
+ last_chord_ = SCM_EOL;
}
void
-Chord_name_engraver::acknowledge_element (Score_element_info i)
+Chord_name_engraver::add_note (Music * n)
{
- if (Note_req* n = dynamic_cast<Note_req*> (i.req_l_))
- pitch_arr_.push (n->pitch_);
+ notes_.push (n);
}
-bool
-Chord_name_engraver::do_try_music (Music* m)
+void
+Chord_name_engraver::process_music ()
{
- if (Note_req* n = dynamic_cast<Note_req*> (m))
- {
- pitch_arr_.push (n->pitch_);
- return true;
- }
- if (Tonic_req* t = dynamic_cast<Tonic_req*> (m))
+ if (!notes_.size() )
+ return;
+
+ SCM bass = SCM_EOL;
+ SCM inversion = SCM_EOL;
+ SCM pitches = SCM_EOL;
+
+ Music* inversion_event = 0;
+ for (int i =0 ; i < notes_.size (); i++)
{
- tonic_req_ = t;
- return true;
+ Music *n = notes_[i];
+ SCM p = n->get_mus_property ("pitch");
+ if (!unsmob_pitch (p))
+ continue;
+
+ if (n->get_mus_property ("inversion") == SCM_BOOL_T)
+ {
+ inversion_event = n;
+ inversion = p;
+ }
+ else if (n->get_mus_property ("bass") == SCM_BOOL_T)
+ bass = p;
+ else
+ pitches = gh_cons (p, pitches);
}
- if (Inversion_req* i = dynamic_cast<Inversion_req*> (m))
+
+ if (inversion_event)
{
- inversion_req_ = i;
- return true;
+ SCM oct = inversion_event->get_mus_property ("octavation");
+ if (gh_number_p (oct))
+ {
+ Pitch *p = unsmob_pitch (inversion_event->get_mus_property ("pitch"));
+ int octavation = gh_scm2int (oct);
+ Pitch orig = p->transposed (Pitch (-octavation, 0,0));
+
+ pitches= gh_cons (orig.smobbed_copy (), pitches);
+ }
+ else
+ programming_error ("Inversion does not have original pitch.");
}
- if (Bass_req* b = dynamic_cast<Bass_req*> (m))
+
+ pitches = scm_sort_list (pitches, Pitch::less_p_proc);
+
+ SCM name_proc = get_property ("chordNameFunction");
+ SCM markup = scm_call_4 (name_proc, pitches, bass, inversion,
+ daddy_trans_->self_scm());
+
+ /*
+ Ugh.
+ */
+ SCM chord_as_scm = gh_cons (pitches, gh_cons (bass, inversion));
+
+ chord_name_ = make_item ("ChordName");
+ chord_name_->set_grob_property("text", markup);
+ announce_grob(chord_name_, notes_[0]->self_scm ());
+ SCM s = get_property ("chordChanges");
+ if (to_boolean (s) && gh_pair_p (last_chord_)
+ && gh_equal_p (chord_as_scm, last_chord_))
+ chord_name_->set_grob_property ("begin-of-line-visible", SCM_BOOL_T);
+
+ last_chord_ = chord_as_scm;
+}
+
+bool
+Chord_name_engraver::try_music (Music* m)
+{
+ /*
+ hmm. Should check?
+ */
+ if (m->is_mus_type ("note-event"))
{
- bass_req_ = b;
+ add_note (m);
return true;
}
return false;
}
void
-Chord_name_engraver::do_process_requests ()
+Chord_name_engraver::stop_translation_timestep ()
{
- if (chord_name_p_)
- return;
- if (!pitch_arr_.size ())
- return;
-
- bool find_inversion_b = false;
- SCM chord_inversion = get_property ("chordInversion", 0);
- if (gh_boolean_p (chord_inversion))
- find_inversion_b = gh_scm2bool (chord_inversion);
-
- chord_name_p_ = new Chord_name (to_chord (pitch_arr_, tonic_req_, inversion_req_, bass_req_, find_inversion_b));
-
- announce_element (Score_element_info (chord_name_p_, 0));
-}
-
-void
-Chord_name_engraver::do_pre_move_processing ()
-{
- if (chord_name_p_)
+ if (chord_name_)
{
- typeset_element (chord_name_p_);
+ typeset_grob (chord_name_);
}
- pitch_arr_.clear ();
- chord_name_p_ = 0;
- tonic_req_ = 0;
- inversion_req_ = 0;
- bass_req_ = 0;
+ chord_name_ = 0;
+ notes_.clear ();
}
+/*
+ The READs description is not strictly accurate:
+ which properties are read depend on the chord naming function active.
+*/
+ENTER_DESCRIPTION(Chord_name_engraver,
+/* descr */ "Catch note-events "
+"and generate the appropriate chordname.",
+/* creats*/ "ChordName",
+/* accepts */ "note-event",
+/* acks */ "",
+/* reads */ "chordChanges chordNameExceptions chordNameFunction "
+"chordNoteNamer chordRootNamer chordNameExceptions majorSevenSymbol",
+/* write */ "");
projects / lilypond.git / blobdiff