source file of the GNU LilyPond music typesetter
- (c) 1998 Jan Nieuwenhuizen <janneke@gnu.org>
+ (c) 1998--2006 Jan Nieuwenhuizen <janneke@gnu.org>
*/
-#include "chord-name-engraver.hh"
-#include "musical-request.hh"
-#include "text-item.hh"
-#include "paper-def.hh"
-#include "lookup.hh"
-#include "paper-def.hh"
-#include "main.hh"
+#include "engraver.hh"
+#include "chord-name.hh"
+#include "output-def.hh"
+#include "font-interface.hh"
+#include "output-def.hh"
#include "dimensions.hh"
-#include "g-text-item.hh"
+#include "item.hh"
+#include "protected-scm.hh"
+#include "context.hh"
+#include "warn.hh"
+#include "pitch.hh"
-ADD_THIS_TRANSLATOR (Chord_name_engraver);
+class Chord_name_engraver : public Engraver
+{
+ TRANSLATOR_DECLARATIONS (Chord_name_engraver);
+protected:
+ void stop_translation_timestep ();
+ void process_music ();
+ virtual bool try_music (Music *);
+ virtual void finalize ();
+ virtual void derived_mark () const;
+private:
+ void add_note (Music *);
+
+ Item *chord_name_;
+ Link_array<Music> notes_;
+
+ SCM last_chord_;
+};
-Chord_name_engraver::Chord_name_engraver ()
+void
+Chord_name_engraver::finalize ()
{
}
void
-Chord_name_engraver::acknowledge_element (Score_element_info i)
+Chord_name_engraver::derived_mark () const
{
- if (Note_req* n = dynamic_cast<Note_req*> (i.req_l_))
- pitch_arr_.push (n->pitch_);
+ scm_gc_mark (last_chord_);
}
-bool
-Chord_name_engraver::do_try_music (Music* m)
+Chord_name_engraver::Chord_name_engraver ()
{
- if (Note_req* n = dynamic_cast<Note_req*> (m))
- {
- pitch_arr_.push (n->pitch_);
- return true;
- }
- return false;
+ chord_name_ = 0;
+ last_chord_ = SCM_EOL;
}
-/*
- UGH.
+void
+Chord_name_engraver::add_note (Music *n)
+{
+ notes_.push (n);
+}
- Split this routine into neat packets
- */
void
-Chord_name_engraver::do_process_requests ()
+Chord_name_engraver::process_music ()
{
- if (text_p_arr_.size ())
+ if (!notes_.size ())
return;
- if (!pitch_arr_.size ())
- return;
-
- /*
- Banter style chord names (almost).
- TODO:
- - move this stuff to new Item class Chord_name
- - switch on property, add american (?) chordNameStyle
-
- Scalar chordNameStyle = get_property ("chordNameStyle", 0);
- if (chordNameStyle == "Banter")
- chord = pitches_to_banter (pitch_arr_));
- */
+ SCM bass = SCM_EOL;
+ SCM inversion = SCM_EOL;
+ SCM pitches = SCM_EOL;
-
- /*
- find tonic: after longest line of triads
- */
-
- int tonic_i = 0;
- Scalar chord_inversions = get_property ("chordInversion", 0);
- if (chord_inversions.to_bool ())
+ Music *inversion_event = 0;
+ for (int i = 0; i < notes_.size (); i++)
{
- int longest_i = 0;
- for (int i = 0; i < pitch_arr_.size (); i++)
- for (int j = 0; j < pitch_arr_.size (); j++)
- {
- int gap = pitch_arr_[(i + j + 1) % pitch_arr_.size ()].notename_i_
- - pitch_arr_[(i + j) % pitch_arr_.size ()].notename_i_;
- while (gap < 0)
- gap += 7;
- gap %= 7;
- if (gap != 2)
- {
- if (j > longest_i)
- {
- longest_i = j;
- tonic_i = i;
- }
- break;
- }
- }
-
- int biggest_i = 0;
- if (!longest_i)
- for (int i = 0; i < pitch_arr_.size (); i++)
- {
- int gap = pitch_arr_[i].notename_i_
- - pitch_arr_[(i - 1 + pitch_arr_.size ())
- % pitch_arr_.size ()].notename_i_;
- while (gap < 0)
- gap += 7;
- gap %= 7;
- if (gap > biggest_i)
- {
- biggest_i = gap;
- tonic_i = i;
- }
- }
+ Music *n = notes_[i];
+ SCM p = n->get_property ("pitch");
+ if (!unsmob_pitch (p))
+ continue;
+
+ if (n->get_property ("inversion") == SCM_BOOL_T)
+ {
+ inversion_event = n;
+ inversion = p;
+ }
+ else if (n->get_property ("bass") == SCM_BOOL_T)
+ bass = p;
+ else
+ pitches = scm_cons (p, pitches);
}
- Musical_pitch inversion = pitch_arr_[0];
- if (tonic_i)
+ if (inversion_event)
{
- Musical_pitch last (0, 0, -5);
- Array<Musical_pitch> pitches;
- for (int i = 0; i < pitch_arr_.size (); i++)
+ SCM oct = inversion_event->get_property ("octavation");
+ if (scm_is_number (oct))
{
- Musical_pitch p = pitch_arr_[(tonic_i + i) % pitch_arr_.size ()];
- if (p < last)
- {
- p.octave_i_ = last.octave_i_;
- if (p < last)
- p.octave_i_++;
- }
- pitches.push (p);
- last = p;
+ Pitch *p = unsmob_pitch (inversion_event->get_property ("pitch"));
+ int octavation = scm_to_int (oct);
+ Pitch orig = p->transposed (Pitch (-octavation, 0, 0));
+
+ pitches = scm_cons (orig.smobbed_copy (), pitches);
}
- pitch_arr_ = pitches;
+ else
+ programming_error ("inversion does not have original pitch");
}
- Musical_pitch tonic = pitch_arr_[0];
+ pitches = scm_sort_list (pitches, Pitch::less_p_proc);
- Array<Musical_pitch> scale;
- scale.push (Musical_pitch (0)); // c
- scale.push (Musical_pitch (1)); // d
- scale.push (Musical_pitch (2)); // e
- scale.push (Musical_pitch (3)); // f
- scale.push (Musical_pitch (4)); // g
- scale.push (Musical_pitch (5)); // a
- // 7 always means 7-...
- scale.push (Musical_pitch (6, -1)); // b
+ SCM name_proc = get_property ("chordNameFunction");
+ SCM markup = scm_call_4 (name_proc, pitches, bass, inversion,
+ context ()->self_scm ());
+ /*
+ Ugh.
+ */
+ SCM chord_as_scm = scm_cons (pitches, scm_cons (bass, inversion));
- for (int i = 0; i < scale.size (); i++)
- scale[i].transpose (tonic);
+ chord_name_ = make_item ("ChordName", notes_[0]->self_scm ());
+ chord_name_->set_property ("text", markup);
- //urg, should do translation in scheme.
- char const *acc[] = {"\\textflat\\textflat ", "\\textflat ", "", "\\textsharp " , "\\textsharp\\textsharp "};
- String tonic_str = tonic.str ();
- tonic_str = tonic_str.left_str (1).upper_str ()
- + acc[tonic.accidental_i_ + 2];
+ SCM s = get_property ("chordChanges");
+ if (to_boolean (s) && scm_is_pair (last_chord_)
+ && ly_is_equal (chord_as_scm, last_chord_))
+ chord_name_->set_property ("begin-of-line-visible", SCM_BOOL_T);
- String add_str;
- String sep_str;
- for (int i=1; i < pitch_arr_.size (); i++)
- {
- Musical_pitch p = pitch_arr_[i];
- int trap = p.notename_i_ - tonic.notename_i_
- + (p.octave_i_ - tonic.octave_i_) * 7 + 1;
- int accidental = p.accidental_i_ - scale[(trap - 1) % 7].accidental_i_;
- if ((trap == 3) && (accidental == -1))
- tonic_str += "m"; // hmm
- else if (accidental || (!(trap % 2) || ((i + 1 == pitch_arr_.size ()) && (trap > 5))))
- {
- add_str += sep_str;
- if ((trap == 7) && (accidental == 1))
- add_str += "maj7";
- else
- {
- add_str += to_str (trap);
- if (accidental)
- add_str += accidental < 0 ? "-" : "+";
- }
- sep_str = "/";
- }
- }
+ last_chord_ = chord_as_scm;
+}
- String inversion_str;
- if (tonic_i)
+bool
+Chord_name_engraver::try_music (Music *m)
+{
+ /*
+ hmm. Should check?
+ */
+ if (m->is_mus_type ("note-event"))
{
- inversion_str = inversion.str ();
- inversion_str = "/" + inversion_str.left_str (1).upper_str ()
- + acc[tonic.accidental_i_ + 2];
-
+ add_note (m);
+ return true;
}
-
- G_text_item* item_p = new G_text_item;
-
-
- item_p->text_str_ = tonic_str + "$^{" + add_str + "}$" + inversion_str;
- Scalar style = get_property ("textstyle", 0);
- if (style.length_i ())
- item_p->style_str_ = style;
-
- text_p_arr_.push (item_p);
- announce_element (Score_element_info (item_p, 0));
+ return false;
}
void
-Chord_name_engraver::do_pre_move_processing ()
+Chord_name_engraver::stop_translation_timestep ()
{
- for (int i=0; i < text_p_arr_.size (); i++)
- {
- typeset_element (text_p_arr_[i]);
- }
- text_p_arr_.clear ();
- pitch_arr_.clear ();
+ chord_name_ = 0;
+ notes_.clear ();
}
+/*
+ The READs description is not strictly accurate:
+ which properties are read depend on the chord naming function active.
+*/
+#include "translator.icc"
+
+ADD_TRANSLATOR (Chord_name_engraver,
+ /* doc */ "Catch note-events "
+ "and generate the appropriate chordname.",
+ /* create */ "ChordName",
+ /* accept */ "note-event",
+ /* read */ "chordChanges chordNameExceptions chordNameFunction "
+ "chordNoteNamer chordRootNamer chordNameExceptions majorSevenSymbol",
+ /* write */ "");
projects / lilypond.git / blobdiff