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--2004 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
  30 Ligature_bracket_engraver::Ligature_bracket_engraver ()
  31 {
  32 }
  33
  34 Spanner *
  35 Ligature_bracket_engraver::create_ligature_spanner ()
  36 {
  37   return make_spanner ("LigatureBracket", SCM_EOL);
  38 }
  39
  40
  41 void
  42 Ligature_bracket_engraver::acknowledge_grob (Grob_info info)
  43 {
  44   if (current_ligature ())
  45     {
  46       if (Note_column::has_interface (info.grob_))
  47         {
  48           Tuplet_bracket::add_column (current_ligature (),
  49                                       dynamic_cast<Item*> (info.grob_));
  50         }
  51       else Ligature_engraver::acknowledge_grob (info);
  52     }
  53 }
  54
  55 ENTER_DESCRIPTION (Ligature_bracket_engraver,
  56 /* descr */       "Handles Ligature_events by engraving Ligature brackets.",
  57 /* creats*/       "TupletBracket",
  58 /* accepts */     "ligature-event",
  59 /* acks  */      "rest-interface note-column-interface",
  60 /* reads */       "",
  61 /* write */       "");