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--1999 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
  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 void
  42 Text_spanner::do_print() const
  43 {
  44   spec_p_->print();
  45 }
  46
  47 void
  48 Text_spanner::do_post_processing()
  49 {
  50   text_off_ = support_span_l_->center() +
  51         Offset (0,support_span_l_->dir_ * paper_l ()->get_realvar(interline_scm_sym)*2.0); // todo
  52 }
  53
  54 Molecule*
  55 Text_spanner::do_brew_molecule_p() const
  56 {
  57   Molecule tsym (spec_p_->get_molecule (paper_l (),CENTER));
  58   tsym.translate (text_off_);
  59
  60   Molecule*output = new Molecule;
  61   output->add_molecule (tsym);
  62   return output;
  63 }
  64
  65 void
  66 Text_spanner::do_pre_processing()
  67 {
  68   spanned_drul_ = support_span_l_->spanned_drul_;
  69 }
  70
  71 Interval
  72 Text_spanner::height() const
  73 {
  74   return do_brew_molecule_p()->extent ().y ();
  75 }
  76
  77 void
  78 Text_spanner::do_substitute_element_pointer (Score_element* o, Score_element*n)
  79 {
  80   if (support_span_l_ == o)
  81         support_span_l_ = (Directional_spanner*) (n?dynamic_cast <Spanner *> (n):0);
  82 }
  83
  84
  85 Text_spanner::~Text_spanner()
  86 {
  87   delete spec_p_;
  88 }
  89
  90 Text_spanner::Text_spanner (Text_spanner const&s)
  91   : Spanner (s)
  92 {
  93   support_span_l_ = s.support_span_l_;
  94   spec_p_ = s.spec_p_? s.spec_p_->clone() : 0;
  95   text_off_ = s.text_off_;
  96 }