lily/include/base-span-bar-engraver.hh

   1 /*
   2   base-span-bar-engraver.hh -- declare Span_bar_engraver
   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
  10 #ifndef SPAN_BAR_GRAV_HH
  11 #define SPAN_BAR_GRAV_HH
  12
  13 #include "engraver.hh"
  14 class Axis_align_spanner;
  15 /**
  16
  17   Make bars that span multiple "staffs". Catch bars, and span a
  18   Span_bar over them if we find more than 2 bars.  Vertical alignment
  19   of staffs changes the appearance of spanbars.  It is up to the
  20   aligner (Vertical_align_engraver, in this case, to add extra
  21   dependencies to the spanbars.
  22
  23   */
  24 class Base_span_bar_engraver : public Engraver
  25 {
  26   Span_bar * spanbar_p_;
  27   Array<Bar*> bar_l_arr_;
  28
  29 public:
  30   VIRTUAL_COPY_CONS(Translator);
  31
  32
  33   Base_span_bar_engraver();
  34 protected:
  35   /**
  36     Do we use break priorities?  If true, use break_priority_i_ as
  37     horizontal alignment priority, otherwise, hang the spanbar on the
  38     acknowledged bar.  */
  39   bool use_priority_b_;
  40
  41   virtual void acknowledge_element (Score_element_info);
  42   virtual void do_pre_move_processing();
  43   virtual Span_bar* get_span_bar_p() const;
  44 };
  45
  46 #endif // SPAN_BAR_GRAV_HH