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)
  22         remove_dependency(support);
  23
  24     support =d;
  25     add_dependency(d);
  26 }
  27
  28 Text_spanner::Text_spanner()
  29 {
  30     spec_p_ = 0;
  31     support = 0;
  32 }
  33
  34 IMPLEMENT_STATIC_NAME(Text_spanner);
  35
  36 void
  37 Text_spanner::do_print() const
  38 {
  39     spec_p_->print();
  40 }
  41
  42 void
  43 Text_spanner::do_post_processing()
  44 {
  45     text_off_ = support->center() +
  46         Offset(0,support->dir_i_ * paper()->internote_f() * 4); // todo
  47 }
  48
  49 Molecule*
  50 Text_spanner::brew_molecule_p() const
  51 {
  52     Atom tsym (spec_p_->get_atom(paper(),0));
  53     tsym.translate(text_off_);
  54
  55     Molecule*output = new Molecule;
  56     output->add( tsym );
  57     return output;
  58 }
  59
  60 void
  61 Text_spanner::do_pre_processing()
  62 {
  63     right_col_l_ = support->right_col_l_;
  64     left_col_l_ = support->left_col_l_;
  65     assert(left_col_l_ && right_col_l_);
  66 }
  67
  68 Interval
  69 Text_spanner::height()const
  70 {
  71     return brew_molecule_p()->extent().y;
  72 }
  73
  74 void
  75 Text_spanner::do_substitute_dependency(Score_elem* o, Score_elem*n)
  76 {
  77     Directional_spanner * old = (Directional_spanner*)o->spanner();
  78     if (support == old)
  79         support = (Directional_spanner*) n->spanner();
  80 }
  81
  82
  83 Text_spanner::~Text_spanner()
  84 {
  85     delete spec_p_;
  86 }