lily/crescendo.cc

   1 /*
   2   crescendo.cc -- implement Crescendo
   3
   4   source file of the LilyPond music typesetter
   5
   6   (c) 1997 Han-Wen Nienhuys <hanwen@stack.nl>
   7 */
   8 #include "dimen.hh"
   9 #include "crescendo.hh"
  10 #include "lookup.hh"
  11 #include "paper-def.hh"
  12 #include "debug.hh"
  13 Crescendo::Crescendo(int s)
  14 {
  15     staff_size_i_ = s;
  16     grow_dir_i_ =0;
  17     dir_i_ = -1 ;
  18     left_dyn_b_ = right_dyn_b_ =false;
  19 }
  20
  21 Spanner*
  22 Crescendo::do_break_at(PCol*, PCol*)const
  23 {
  24     return new Crescendo(*this);
  25 }
  26
  27
  28 Molecule*
  29 Crescendo::brew_molecule_p() const return m_p ;
  30 {
  31     Real x_off_dim=0.0;
  32     Real absdyn_dim = 10 PT;    // UGR
  33
  34     m_p = new Molecule;
  35     Real w_dim = width().length();
  36     if ( left_dyn_b_ ) {
  37         w_dim -= absdyn_dim;
  38         x_off_dim += absdyn_dim;
  39     }
  40     if ( right_dyn_b_ ) {
  41         w_dim -= absdyn_dim;
  42     }
  43
  44     if (w_dim < 0) {
  45         error("Crescendo too small");
  46         w_dim = 0;
  47     }
  48     Symbol s( paper()->lookup_l()->hairpin(w_dim, grow_dir_i_ < 0) );
  49     m_p->add(Atom(s));
  50     int pos = (dir_i_ >0) ? staff_size_i_ + 4 : - 4 ;
  51     if(dir_i_<0 )               // should do something better anyway.
  52         m_p->translate(Offset(0, -m_p->extent().y.left ));
  53     m_p->translate(Offset(x_off_dim,pos * paper()->internote()));
  54 }
  55
  56 IMPLEMENT_STATIC_NAME(Crescendo);