source file of the GNU LilyPond music typesetter
- (c) 1998 Jan Nieuwenhuizen <janneke@gnu.org>
+ (c) 1998--2002 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 "text-item.hh"
#include "paper-def.hh"
-#include "lookup.hh"
+#include "font-interface.hh"
#include "paper-def.hh"
#include "main.hh"
#include "dimensions.hh"
+#include "item.hh"
+#include "pitch.hh"
+#include "protected-scm.hh"
+
+class Chord_name_engraver : public Engraver
+{
+
+ TRANSLATOR_DECLARATIONS( Chord_name_engraver);
+
+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_ = chord_;
}
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 = ly_car (chord_);
+ SCM modifiers = ly_cdr (chord_);
+ SCM inversion = modifiers == SCM_EOL ? SCM_EOL : ly_car (modifiers);
+ SCM bass = modifiers == SCM_EOL ? SCM_EOL : ly_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;
}
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
- - 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++)
+ if (Note_req* n = dynamic_cast<Note_req*> (i.music_cause ()))
+ add_note (n);
+}
+
+void
+Chord_name_engraver::create_grobs ()
+{
+ if (!chord_name_p_ && ly_car (chord_) != SCM_EOL)
{
- 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 = "/";
- }
+ 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");
+ if (to_boolean (s) && ly_car (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->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));
}
void
-Chord_name_engraver::do_pre_move_processing ()
+Chord_name_engraver::stop_translation_timestep ()
{
- for (int i=0; i < text_p_arr_.size (); i++)
+ if (chord_name_p_)
{
- typeset_element (text_p_arr_[i]);
+ typeset_grob (chord_name_p_);
}
- text_p_arr_.clear ();
- pitch_arr_.clear ();
+ chord_name_p_ = 0;
+
+ if (ly_car (chord_) != SCM_EOL)
+ last_chord_ = chord_;
+ chord_ = gh_cons (SCM_EOL, gh_cons (SCM_EOL, SCM_EOL));
}
+ENTER_DESCRIPTION(Chord_name_engraver,
+/* descr */ "Catch Note_req's, Tonic_reqs, Inversion_reqs, Bass_req
+and generate the appropriate chordname.",
+/* creats*/ "ChordName",
+/* acks */ "grob-interface",
+/* reads */ "chordChanges",
+/* write */ "");