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   virtual void typeset_ligature (Spanner *ligature, Array<Grob_info>);
  26
  27 public:
  28   TRANSLATOR_DECLARATIONS (Ligature_bracket_engraver);
  29
  30 private:
  31   void typeset_ligature_bracket ();
  32 };
  33
  34
  35 Ligature_bracket_engraver::Ligature_bracket_engraver ()
  36 {
  37 }
  38
  39 Spanner *
  40 Ligature_bracket_engraver::create_ligature_spanner ()
  41 {
  42   return make_spanner ("LigatureBracket");
  43 }
  44
  45 void
  46 Ligature_bracket_engraver::typeset_ligature (Spanner *ligature, Array<Grob_info>)
  47 {
  48   typeset_grob (ligature);
  49 }
  50
  51 void
  52 Ligature_bracket_engraver::acknowledge_grob (Grob_info info)
  53 {
  54   if (current_ligature ())
  55     {
  56       if (Note_column::has_interface (info.grob_))
  57         {
  58           Tuplet_bracket::add_column (current_ligature (),
  59                                       dynamic_cast<Item*> (info.grob_));
  60         }
  61       else Ligature_engraver::acknowledge_grob (info);
  62     }
  63 }
  64
  65 ENTER_DESCRIPTION (Ligature_bracket_engraver,
  66 /* descr */       "Handles Ligature_events by engraving Ligature brackets.",
  67 /* creats*/       "TupletBracket",
  68 /* accepts */     "ligature-event",
  69 /* acks  */      "rest-interface note-column-interface",
  70 /* reads */       "",
  71 /* write */       "");