2 dimension-cache.hh -- declare Dimension_cache
4 source file of the GNU LilyPond music typesetter
6 (c) 1998--1999 Han-Wen Nienhuys <hanwen@cs.uu.nl>
10 #ifndef DIMENSION_CACHE_HH
11 #define DIMENSION_CACHE_HH
13 #include "interval.hh"
15 #include "lily-proto.hh"
20 Adminstration of offset dimension info.
25 /** Is this element dimensionless?.
26 This is private to guarantee correctness of the cache
31 The offset wrt. to the center of #parent_l_#
34 Graphical_element *elt_l_;
35 friend class Graphical_element;
39 /** The #offset_# is defined with regard to this graphical_element/
42 Dimension_cache * parent_l_;
43 Link_array<Dimension_cache> dependencies_l_arr_;
44 Graphical_element *element_l () { return elt_l_; }
45 Real absolute_coordinate () const;
47 void invalidate_dependencies ();
49 Dimension_cache(Dimension_cache const&);
52 Real relative_coordinate (Dimension_cache *d) const;
53 Dimension_cache*common_group (Dimension_cache const* s) const;
54 Dimension_cache*common_group (Link_array<Dimension_cache> caches) const;
55 void set_empty (bool);
56 void translate (Real);
57 void set_offset (Real);
58 bool valid_b () const { return valid_b_; }
59 bool empty_b() const { return empty_b_; }
60 void set_dim (Interval);
61 Interval get_dim () const;
65 #endif /* DIMENSION_CACHE_HH */