lily/ligature-bracket-engraver.cc

   1 /*
   2   ligature-bracket-engraver.cc -- implement Ligature_bracket_engraver
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c) 2002--2005 Juergen Reuter <reuter@ipd.uka.de>
   7 */
   8
   9 #include "ligature-engraver.hh"
  10 #include "note-column.hh"
  11 #include "tuplet-bracket.hh"
  12 #include "spanner.hh"
  13
  14 /*
  15  * This engraver marks ligatures of any kind by just printing a
  16  * horizontal square bracket on top of each ligature.  See class
  17  * Ligature_engraver for more information on the interaction between
  18  * this class and its superclass.
  19  */
  20 class Ligature_bracket_engraver : public Ligature_engraver
  21 {
  22 protected:
  23   virtual Spanner *create_ligature_spanner ();
  24   virtual void acknowledge_grob (Grob_info);
  25 public:
  26   TRANSLATOR_DECLARATIONS (Ligature_bracket_engraver);
  27 };
  28
  29 Ligature_bracket_engraver::Ligature_bracket_engraver ()
  30 {
  31 }
  32
  33 Spanner *
  34 Ligature_bracket_engraver::create_ligature_spanner ()
  35 {
  36   return make_spanner ("LigatureBracket", SCM_EOL);
  37 }
  38
  39 void
  40 Ligature_bracket_engraver::acknowledge_grob (Grob_info info)
  41 {
  42   if (current_ligature ())
  43     {
  44       if (Note_column::has_interface (info.grob ()))
  45         {
  46           Tuplet_bracket::add_column (current_ligature (),
  47                                       dynamic_cast<Item *> (info.grob ()));
  48         }
  49       else Ligature_engraver::acknowledge_grob (info);
  50     }
  51 }
  52
  53 ADD_TRANSLATOR (Ligature_bracket_engraver,
  54                 /* descr */ "Handles Ligature_events by engraving Ligature brackets.",
  55                 /* creats*/ "TupletBracket",
  56                 /* accepts */ "ligature-event",
  57                 /* acks  */ "rest-interface note-column-interface",
  58                 /* reads */ "",
  59                 /* write */ "");