lily/bar.cc

   1 /*
   2   bar.cc -- implement Bar
   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 "dimension-cache.hh"
  10 #include "bar.hh"
  11 #include "string.hh"
  12 #include "molecule.hh"
  13 #include "paper-def.hh"
  14 #include "lookup.hh"
  15 #include "debug.hh"
  16
  17
  18 Bar::Bar ()
  19 {
  20   set_elt_property ("breakable", SCM_BOOL_T);
  21   type_str_ = "|";
  22 }
  23
  24 void
  25 Bar::do_print () const
  26 {
  27 #ifndef NPRINT
  28   String s = type_str_;
  29   DEBUG_OUT << "type = " << s;
  30 #endif
  31 }
  32
  33 Real
  34 Bar::get_bar_size () const
  35 {
  36   // Never called!
  37   return 0;
  38 }
  39
  40
  41 Molecule*
  42 Bar::do_brew_molecule_p () const
  43 {
  44   Molecule *output = new Molecule (lookup_l ()->bar (type_str_, get_bar_size (), paper_l ()));
  45
  46   return output;
  47 }
  48
  49 /**
  50   Prescriptions for splitting bars.
  51   TODO: put this in SCM.
  52  */
  53 static char const *bar_breaks[][3] ={
  54   {":|", ":|:", "|:"},
  55   {"|", "|", ""},
  56   {"", "|s", "|"},
  57   {"|", "|:", "|:"},
  58   {"|.", "|.", ""},
  59   {":|", ":|", ""},
  60   {"||", "||", ""},
  61   {".|.", ".|.", ""},
  62   {"", "scorebar", "scorepostbreak"},
  63   {"", "brace", "brace"},
  64   {"", "bracket", "bracket"},
  65   {0,0,0}
  66 };
  67
  68 void
  69 Bar::do_pre_processing ()
  70 {
  71   for (int i=0; bar_breaks[i][0]; i++)
  72     {
  73       if (bar_breaks[i][1] == type_str_)
  74         {
  75           type_str_ = bar_breaks[i][break_status_dir ()+1];
  76           break;
  77         }
  78     }
  79
  80
  81   if (remove_elt_property ("at-line-start") == SCM_BOOL_T       // UGR.
  82       && (break_status_dir () == RIGHT) && (type_str_ == ""))
  83     {
  84       type_str_ = "|";
  85     }
  86
  87   if (type_str_ =="")
  88     set_empty (X_AXIS);
  89 }
  90
  91