source file of the GNU LilyPond music typesetter
- (c) 1998 Jan Nieuwenhuizen <janneke@gnu.org>
+ (c) 1998--2008 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 "chord-name.hh"
+#include "context.hh"
#include "dimensions.hh"
+#include "engraver.hh"
+#include "font-interface.hh"
+#include "item.hh"
+#include "output-def.hh"
+#include "pitch.hh"
+#include "protected-scm.hh"
+#include "stream-event.hh"
+#include "warn.hh"
+
+#include "translator.icc"
+
+class Chord_name_engraver : public Engraver
+{
+ TRANSLATOR_DECLARATIONS (Chord_name_engraver);
+protected:
+ void stop_translation_timestep ();
+ void process_music ();
+ virtual void finalize ();
+ virtual void derived_mark () const;
+ DECLARE_TRANSLATOR_LISTENER (note);
+private:
+ Item *chord_name_;
+ vector<Stream_event*> notes_;
+
+ SCM last_chord_;
+};
-ADD_THIS_TRANSLATOR (Chord_name_engraver);
-
-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;
}
void
-Chord_name_engraver::do_process_requests ()
+Chord_name_engraver::process_music ()
{
- if (text_p_arr_.size ())
- return;
- if (!pitch_arr_.size ())
+ if (!notes_.size ())
return;
- /*
- Banter style chord names (almost).
- TODO:
- - move this stuff to new Item class Chord_name
- - switch on property, add american (?) chordNameStyle
- - jazz inversions
-
- Scalar chordNameStyle = get_property ("chordNameStyle");
- if (chordNameStyle == "Banter")
- chord = pitches_to_banter (pitch_arr_));
-
- */
-
- Scalar style = get_property ("textstyle");
- Scalar alignment = get_property ("textalignment");
- Text_def* text_p = new Text_def;
- text_p->align_dir_ = LEFT;
- if (style.length_i ())
- text_p->style_str_ = style;
- if (alignment.isnum_b())
- text_p->align_dir_= (Direction)(int)alignment;
-
- Musical_pitch tonic = pitch_arr_[0];
-
- 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
-
- for (int i = 0; i < scale.size (); i++)
- scale[i].transpose (tonic);
-
- //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];
-
- String add_str;
- String sep_str;
- for (int i=1; i < pitch_arr_.size (); i++)
+ SCM bass = SCM_EOL;
+ SCM inversion = SCM_EOL;
+ SCM pitches = SCM_EOL;
+
+ Stream_event *inversion_event = 0;
+ for (vsize i = 0; i < notes_.size (); i++)
+ {
+ Stream_event *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);
+ }
+
+ if (inversion_event)
{
- 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 = "/";
+ SCM oct = inversion_event->get_property ("octavation");
+ if (scm_is_number (oct))
+ {
+ 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);
}
+ else
+ programming_error ("inversion does not have original pitch");
}
- text_p->text_str_ = tonic_str + "$^{" + add_str + "}$";
- Text_item* item_p = new Text_item (text_p);
- item_p->dir_ = DOWN;
- item_p->fat_b_ = true;
- text_p_arr_.push (item_p);
- announce_element (Score_element_info (item_p, 0));
+ 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,
+ context ()->self_scm ());
+
+ /*
+ Ugh.
+ */
+ SCM chord_as_scm = scm_cons (pitches, scm_cons (bass, inversion));
+
+ chord_name_ = make_item ("ChordName", notes_[0]->self_scm ());
+ chord_name_->set_property ("text", markup);
+
+ 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);
+
+ last_chord_ = chord_as_scm;
}
+IMPLEMENT_TRANSLATOR_LISTENER (Chord_name_engraver, note);
void
-Chord_name_engraver::do_pre_move_processing ()
+Chord_name_engraver::listen_note (Stream_event *ev)
{
- for (int i=0; i < text_p_arr_.size (); i++)
- {
- typeset_element (text_p_arr_[i]);
- }
- text_p_arr_.clear ();
- pitch_arr_.clear ();
+ notes_.push_back (ev);
}
+void
+Chord_name_engraver::stop_translation_timestep ()
+{
+ chord_name_ = 0;
+ notes_.clear ();
+}
+
+/*
+ The READs description is not strictly accurate:
+ which properties are read depend on the chord naming function active.
+*/
+ADD_TRANSLATOR (Chord_name_engraver,
+ /* doc */
+ "Catch note events and generate the appropriate chordname.",
+
+ /* create */
+ "ChordName ",
+
+ /* read */
+ "chordChanges "
+ "chordNameExceptions "
+ "chordNameFunction "
+ "chordNoteNamer "
+ "chordRootNamer "
+ "chordNameExceptions "
+ "majorSevenSymbol ",
+
+ /* write */
+ ""
+ );
projects / lilypond.git / blobdiff