lily/tab-staff-symbol-engraver.cc

   1 /*
   2   tab-staff-symbol-engraver.cc -- implement Tab_staff_symbol_engraver
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c) 2005 Han-Wen Nienhuys <hanwen@xs4all.nl>
   7
   8 */
   9
  10 #include "staff-symbol-engraver.hh"
  11 #include "spanner.hh"
  12
  13 class Tab_staff_symbol_engraver : public Staff_symbol_engraver
  14 {
  15 public:
  16   TRANSLATOR_DECLARATIONS (Tab_staff_symbol_engraver);
  17 protected:
  18   virtual void start_spanner ();
  19 };
  20
  21 void
  22 Tab_staff_symbol_engraver::start_spanner ()
  23 {
  24   bool init = !span_;
  25   Staff_symbol_engraver::start_spanner ();
  26   if (init)
  27     {
  28       int k = scm_ilength (get_property ("stringTunings"));
  29       if (k >= 0)
  30         span_->set_property ("line-count", scm_int2num (k));
  31     }
  32 }
  33
  34 Tab_staff_symbol_engraver::Tab_staff_symbol_engraver ()
  35 {
  36 }
  37
  38 ADD_TRANSLATOR (Tab_staff_symbol_engraver,
  39                 /* descr */ "Create a staff-symbol, but look at stringTunings for the number of lines."
  40                 "staff lines.",
  41                 /* creats*/ "StaffSymbol",
  42                 /* accepts */ "staff-span-event",
  43                 /* acks  */ "grob-interface",
  44                 /* reads */ "stringTunings",
  45                 /* write */ "");