lily/include/graphical-element.hh

   1 /*
   2   graphical-element.hh -- declare Graphical_element
   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 GRAPHICAL_ELEMENT_HH
  11 #define GRAPHICAL_ELEMENT_HH
  12
  13 #include "offset.hh"
  14 #include "lily-proto.hh"
  15 #include "interval.hh"
  16 #include "virtual-methods.hh"
  17 #include "dimension-cache.hh"
  18
  19
  20
  21 /** The 2d geometric aspects of a score-element.  It was put in a
  22   separate class, because Score_element got quite big.
  23   */
  24 class Graphical_element
  25 {
  26   void init ();
  27 public:
  28   Dimension_cache *dim_cache_[NO_AXES];
  29
  30   /**
  31      Set this if anyone points to me, or if I point to anyone.
  32    */
  33   bool used_b_;
  34
  35   char const * name () const;
  36   void set_empty (bool);
  37   Graphical_element ();
  38   Graphical_element (Graphical_element const&);
  39   virtual ~Graphical_element ();
  40
  41   void invalidate_cache (Axis);
  42   Interval extent (Axis) const;
  43
  44   /**
  45     translate the symbol.
  46     */
  47   void translate (Offset);
  48   /**
  49     translate in one direction
  50     */
  51
  52   void translate_axis (Real, Axis);
  53
  54   Real relative_coordinate (Dimension_cache*group, Axis) const;
  55   Real absolute_coordinate (Axis) const;
  56   /**
  57     Find the group-element which has both #this# and #s#
  58    */
  59   Dimension_cache*common_group (Graphical_element const* s, Axis a) const;
  60   Dimension_cache*common_group (Link_array<Graphical_element> elems, Axis a) const;
  61
  62   Graphical_element *parent_l (Axis a) const;
  63
  64   virtual void do_print () const;
  65 };
  66
  67 #endif // GRAPHICAL_ELEMENT_HH
  68