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--1998 Han-Wen Nienhuys <hanwen@cs.uu.nl>
   7 */
   8
   9 #include "molecule.hh"
  10 #include "box.hh"
  11 #include "text-spanner.hh"
  12 #include "text-def.hh"
  13 #include "debug.hh"
  14 #include "paper-def.hh"
  15 #include "atom.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 void
  29 Text_spanner::do_add_processing ()
  30 {
  31   set_bounds (LEFT, support_span_l_->spanned_drul_[LEFT]);
  32   set_bounds (RIGHT, support_span_l_->spanned_drul_[RIGHT]);
  33 }
  34
  35 Text_spanner::Text_spanner()
  36 {
  37   spec_p_ = 0;
  38   support_span_l_ = 0;
  39 }
  40
  41
  42 IMPLEMENT_IS_TYPE_B1(Text_spanner,Spanner);
  43
  44 void
  45 Text_spanner::do_print() const
  46 {
  47   spec_p_->print();
  48 }
  49
  50 void
  51 Text_spanner::do_post_processing()
  52 {
  53   text_off_ = support_span_l_->center() +
  54         Offset (0,support_span_l_->dir_ * paper()->internote_f () * 4); // todo
  55 }
  56
  57 Molecule*
  58 Text_spanner::brew_molecule_p() const
  59 {
  60   Atom tsym (spec_p_->get_atom (paper(),CENTER));
  61   tsym.translate (text_off_);
  62
  63   Molecule*output = new Molecule;
  64   output->add_atom (tsym);
  65   return output;
  66 }
  67
  68 void
  69 Text_spanner::do_pre_processing()
  70 {
  71   spanned_drul_ = support_span_l_->spanned_drul_;
  72 }
  73
  74 Interval
  75 Text_spanner::height() const
  76 {
  77   return brew_molecule_p()->extent ().y ();
  78 }
  79
  80 void
  81 Text_spanner::do_substitute_dependency (Score_element* o, Score_element*n)
  82 {
  83   if (support_span_l_ == o)
  84         support_span_l_ = (Directional_spanner*) (n?dynamic_cast <Spanner *> (n):0);
  85 }
  86
  87
  88 Text_spanner::~Text_spanner()
  89 {
  90   delete spec_p_;
  91 }
  92
  93 Text_spanner::Text_spanner (Text_spanner const&s)
  94   : Spanner (s)
  95 {
  96   support_span_l_ = s.support_span_l_;
  97   spec_p_ = s.spec_p_? s.spec_p_->clone() : 0;
  98   text_off_ = s.text_off_;
  99 }