source file of the GNU LilyPond music typesetter
- (c) 1998 Jan Nieuwenhuizen <janneke@gnu.org>
+ (c) 1998--2000 Jan Nieuwenhuizen <janneke@gnu.org>
*/
-#include "chord-name-engraver.hh"
+#include "engraver.hh"
+#include "chord-name.hh"
+#include "chord.hh"
#include "musical-request.hh"
#include "paper-def.hh"
-#include "lookup.hh"
+#include "font-interface.hh"
#include "paper-def.hh"
#include "main.hh"
#include "dimensions.hh"
-#include "g-text-item.hh"
+#include "item.hh"
+#include "pitch.hh"
+#include "protected-scm.hh"
+
+class Chord_name_engraver : public Engraver
+{
+public:
+ Chord_name_engraver ();
+ VIRTUAL_COPY_CONS (Translator);
+
+protected:
+ virtual void stop_translation_timestep ();
+ virtual void acknowledge_grob (Grob_info i);
+ virtual void create_grobs ();
+ virtual bool try_music (Music *);
+
+private:
+ void add_note (Note_req *);
+
+ Item* chord_name_p_;
+ Protected_scm chord_;
+ Protected_scm last_chord_;
+};
ADD_THIS_TRANSLATOR (Chord_name_engraver);
Chord_name_engraver::Chord_name_engraver ()
{
+ chord_name_p_ = 0;
+ chord_ = gh_cons (SCM_EOL, gh_cons (SCM_EOL, SCM_EOL));
+ last_chord_ = SCM_EOL;
}
void
-Chord_name_engraver::acknowledge_element (Score_element_info i)
+Chord_name_engraver::add_note (Note_req* n)
{
- if (Note_req* n = dynamic_cast<Note_req*> (i.req_l_))
- pitch_arr_.push (n->pitch_);
+ SCM pitches = gh_car (chord_);
+ SCM modifiers = gh_cdr (chord_);
+ SCM inversion = modifiers == SCM_EOL ? SCM_EOL : gh_car (modifiers);
+ SCM bass = modifiers == SCM_EOL ? SCM_EOL : gh_cdr (modifiers);
+
+ if (n->get_mus_property ("inversion") == SCM_BOOL_T)
+ inversion = n->get_mus_property ("pitch");
+ else if (n->get_mus_property ("bass") == SCM_BOOL_T)
+ bass = n->get_mus_property ("pitch");
+ else
+ pitches = scm_sort_list (gh_cons (n->get_mus_property ("pitch"), pitches),
+ Pitch::less_p_proc);
+ chord_ = gh_cons (pitches, gh_cons (inversion, bass));
}
bool
-Chord_name_engraver::do_try_music (Music* m)
+Chord_name_engraver::try_music (Music* m)
{
if (Note_req* n = dynamic_cast<Note_req*> (m))
{
- pitch_arr_.push (n->pitch_);
+ add_note (n);
return true;
}
return false;
}
- /*
- find tonic: after longest line of triads
- */
-int
-Chord_name_engraver::find_tonic_i () const
-{
- int tonic_i = 0;
- 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;
- }
- }
- return tonic_i;
-}
-
-Array<Musical_pitch>
-Chord_name_engraver::rebuild_pitch_arr (int tonic_i) const
-{
- Musical_pitch last (0, 0, -5);
- Array<Musical_pitch> pitches;
- for (int i = 0; i < pitch_arr_.size (); i++)
- {
- 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;
- }
- return pitches;
-}
-
void
-Chord_name_engraver::do_process_requests ()
+Chord_name_engraver::acknowledge_grob (Grob_info i)
{
- if (text_p_arr_.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_));
-
- */
-
- int tonic_i = 0;
- Musical_pitch inversion = pitch_arr_[0];
- Scalar chord_inversions = get_property ("chordInversion", 0);
- if (chord_inversions.to_bool ())
- {
- tonic_i = find_tonic_i ();
- if (tonic_i)
- pitch_arr_ = rebuild_pitch_arr (tonic_i);
- }
-
-
- G_text_item* item_p = new G_text_item;
-
- item_p->text_str_ = banter_str (pitch_arr_, tonic_i, inversion);
-
- 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));
+ if (Note_req* n = dynamic_cast<Note_req*> (i.req_l_))
+ add_note (n);
}
void
-Chord_name_engraver::do_pre_move_processing ()
+Chord_name_engraver::create_grobs ()
{
- for (int i=0; i < text_p_arr_.size (); i++)
+ if (!chord_name_p_ && gh_car (chord_) != SCM_EOL)
{
- typeset_element (text_p_arr_[i]);
+ chord_name_p_ = new Item (get_property ("ChordName"));
+ chord_name_p_->set_grob_property ("chord", chord_);
+ announce_grob (chord_name_p_, 0);
+ SCM s = get_property ("chordChanges");
+#ifdef DEBUG
+ /*
+ gdb crashes upon printscm (chord_) etc...
+ ugh: why does gh_equal_p () not seem to work??
+ */
+ printf ("chord: %s\n", ly_scm2string (ly_write2scm (chord_)).ch_C ());
+ printf ("last_chord: %s\n", ly_scm2string (ly_write2scm (last_chord_)).ch_C ());
+ int i = gh_equal_p (chord_, last_chord_);
+ printf ("i: %d\n", i);
+#endif
+ if (to_boolean (s) && last_chord_ != SCM_EOL
+ && gh_equal_p (chord_, last_chord_))
+ chord_name_p_->set_grob_property ("begin-of-line-visible", SCM_BOOL_T);
}
- text_p_arr_.clear ();
- pitch_arr_.clear ();
}
-String
-Chord_name_engraver::banter_str (Array<Musical_pitch> pitch_arr, int tonic_i, Musical_pitch inversion) const
+void
+Chord_name_engraver::stop_translation_timestep ()
{
- 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 sub_str;
- String sep_str;
- int last_trap = 1;
- for (int i=1; i < pitch_arr.size (); i++)
+ if (chord_name_p_)
{
- Musical_pitch p = pitch_arr[i];
- int trap = p.notename_i_ - tonic.notename_i_
- + (p.octave_i_ - tonic.octave_i_) * 7 + 1;
- while (trap - last_trap > 2)
- {
- last_trap += 2;
- sub_str += sep_str + "no" + to_str (last_trap);
- sep_str = "/";
- }
- last_trap = trap;
- 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 = "/";
- }
+ typeset_grob (chord_name_p_);
}
+ chord_name_p_ = 0;
- String inversion_str;
- if (tonic_i)
- {
- inversion_str = inversion.str ();
- inversion_str = "/" + inversion_str.left_str (1).upper_str ()
- + acc[tonic.accidental_i_ + 2];
-
- }
-
- String str = tonic_str + "$^{" + add_str + sub_str + "}$" + inversion_str;
- return str;
+ last_chord_ = chord_;
+ chord_ = gh_cons (SCM_EOL, gh_cons (SCM_EOL, SCM_EOL));
}
+
projects / lilypond.git / blobdiff