lily/volta-spanner.cc

   1 /*
   2   volta-spanner.cc -- implement Volta_spanner
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c)  1997--1998 Jan Nieuwenhuizen <janneke@gnu.org>
   7 */
   8
   9 #include "atom.hh"
  10 #include "box.hh"
  11 #include "debug.hh"
  12 #include "lookup.hh"
  13 #include "molecule.hh"
  14 #include "note-column.hh"
  15 #include "p-col.hh" // urg
  16 #include "bar.hh"
  17 #include "p-col.hh"
  18 #include "paper-def.hh"
  19 #include "volta-spanner.hh"
  20 #include "stem.hh"
  21 #include "text-def.hh"
  22
  23 /*
  24    Hmm, should probably make generic Bracket_spanner,
  25    or and derive Plet and volta spanner from that.
  26  */
  27
  28 Volta_spanner::Volta_spanner ()
  29 {
  30   dir_ = UP;
  31   last_b_ = false;
  32   number_p_.set_p (new Text_def);
  33   number_p_->align_dir_ = LEFT;
  34   dot_p_.set_p (new Text_def);
  35   dot_p_->align_dir_ = LEFT;
  36 }
  37
  38 Molecule*
  39 Volta_spanner::brew_molecule_p () const
  40 {
  41   Molecule* mol_p = new Molecule;
  42
  43   if (column_arr_.size ())
  44     {
  45       Real internote_f = paper ()->internote_f ();
  46       Real dx = internote_f;
  47       Real w = width ().length () - 2 * dx;
  48       Atom volta (lookup_l ()->volta (w, last_b_));
  49       Real h = volta.dim_.y ().length ();
  50       Atom num (number_p_->get_atom (paper (), LEFT));
  51       Atom dot (dot_p_->get_atom (paper (), LEFT));
  52       Real dy = column_arr_.top ()->extent (Y_AXIS) [dir_] >
  53         column_arr_[0]->extent (Y_AXIS) [dir_];
  54       dy += 2 * h;
  55       for (int i = 0; i < note_column_arr_.size (); i++)
  56         dy = dy >? note_column_arr_[i]->height ().max ();
  57       dy -= h;
  58
  59       Real gap = num.dim_.x ().length () / 2;
  60       Offset off (num.dim_.x ().length () + gap,
  61         (h - num.dim_.y ().length ()) / internote_f - gap);
  62       num.translate (off);
  63       Real dotheight = dot.dim_.y ().length () / 7;
  64       off -= Offset (0, dotheight);
  65       dot.translate (off);
  66       mol_p->add_atom (volta);
  67       mol_p->add_atom (num);
  68       mol_p->add_atom (dot);
  69       mol_p->translate (Offset (dx, dy));
  70     }
  71   return mol_p;
  72 }
  73
  74 void
  75 Volta_spanner::do_add_processing ()
  76 {
  77   if (column_arr_.size ())
  78     {
  79       set_bounds (LEFT, column_arr_[0]);
  80       set_bounds (RIGHT, column_arr_.top ());
  81     }
  82   number_p_->style_str_ = "number-1";
  83   dot_p_->text_str_ = ".";
  84   dot_p_->style_str_ = "bold";
  85 }
  86
  87 void
  88 Volta_spanner::do_post_processing ()
  89 {
  90     if (column_arr_.size())
  91         translate_axis (column_arr_[0]->extent (Y_AXIS)[dir_], Y_AXIS);
  92 }
  93
  94 void
  95 Volta_spanner::do_substitute_dependency (Score_element* o, Score_element* n)
  96 {
  97   if (Note_column* c = dynamic_cast <Note_column*> (o))
  98     note_column_arr_.substitute (c, dynamic_cast<Note_column*> (n));
  99   else if (Bar* c = dynamic_cast <Bar*> (o))
 100     column_arr_.substitute (c, dynamic_cast<Bar*> (n));
 101 }
 102
 103 void
 104 Volta_spanner::add_column (Bar* c)
 105 {
 106   column_arr_.push (c);
 107   add_dependency (c);
 108 }
 109
 110 void
 111 Volta_spanner::add_column (Note_column* c)
 112 {
 113   note_column_arr_.push (c);
 114   add_dependency (c);
 115 }
 116