lily/text-spanner.cc

   1 /*
   2   text-spanner.cc -- implement Text_spanner
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c) 1997 Han-Wen Nienhuys <hanwen@stack.nl>
   7 */
   8
   9 #include "molecule.hh"
  10 #include "boxes.hh"
  11 #include "text-spanner.hh"
  12 #include "text-def.hh"
  13 #include "debug.hh"
  14 #include "paper-def.hh"
  15 #include "symbol.hh"
  16
  17
  18 void
  19 Text_spanner::set_support (Directional_spanner*d)
  20 {
  21   if (support_span_l_)
  22         remove_dependency (support_span_l_);
  23
  24   support_span_l_ =d;
  25   add_dependency (d);
  26 }
  27
  28 Text_spanner::Text_spanner()
  29 {
  30   spec_p_ = 0;
  31   support_span_l_ = 0;
  32 }
  33
  34
  35 IMPLEMENT_IS_TYPE_B1(Text_spanner,Spanner);
  36
  37 void
  38 Text_spanner::do_print() const
  39 {
  40   spec_p_->print();
  41 }
  42
  43 void
  44 Text_spanner::do_post_processing()
  45 {
  46   text_off_ = support_span_l_->center() +
  47         Offset (0,support_span_l_->dir_i_ * paper()->internote_f () * 4); // todo
  48 }
  49
  50 Molecule*
  51 Text_spanner::brew_molecule_p() const
  52 {
  53   Atom tsym (spec_p_->get_atom (paper(),0));
  54   tsym.translate (text_off_);
  55
  56   Molecule*output = new Molecule;
  57   output->add (tsym);
  58   return output;
  59 }
  60
  61 void
  62 Text_spanner::do_pre_processing()
  63 {
  64   right_col_l_ = support_span_l_->right_col_l_;
  65   left_col_l_ = support_span_l_->left_col_l_;
  66   assert (left_col_l_ && right_col_l_);
  67 }
  68
  69 Interval
  70 Text_spanner::height()const
  71 {
  72   return brew_molecule_p()->extent ().y ();
  73 }
  74
  75 void
  76 Text_spanner::do_substitute_dependency (Score_elem* o, Score_elem*n)
  77 {
  78   if (support_span_l_ == o)
  79         support_span_l_ = (Directional_spanner*) (n?n->spanner():0);
  80 }
  81
  82
  83 Text_spanner::~Text_spanner()
  84 {
  85   delete spec_p_;
  86 }
  87
  88 Text_spanner::Text_spanner (Text_spanner const&s)
  89   : Spanner (s)
  90 {
  91   support_span_l_ = s.support_span_l_;
  92   spec_p_ = s.spec_p_? s.spec_p_->clone() : 0;
  93   text_off_ = s.text_off_;
  94 }