2 side-position-interface.hh -- declare Side_position_interface
4 source file of the GNU LilyPond music typesetter
6 (c) 1999--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
10 #ifndef SIDE_POSITION_INTERFACE_HH
11 #define SIDE_POSITION_INTERFACE_HH
21 Position victim object (ELT_L_) next to other objects (the support).
23 side-support -- list of score elements
25 direction -- where to put the victim object (left or right?)
27 side-relative-direction -- if set: get the direction from a different object, and multiply by this.
29 direction-source -- in case side-relative-direction is set, where
32 minimum-space -- minimum distance that the victim should move
35 padding -- add this much extra space between victim and support
37 self-alignment-X -- real number: -1 = left aligned, 0 = center, 1
38 right-aligned in X direction.
40 Set to an element pointer, if you want that element to be the center.
42 self-alignment-Y -- like self-alignment-X but for Y axis
44 TODO: move out unrelated callbacks.
46 TODO: reduce number of methods.
52 DECLARE_SCHEME_CALLBACK(side_position, (SCM element, SCM axis));
53 DECLARE_SCHEME_CALLBACK(aligned_on_self, (SCM element, SCM axis));
54 DECLARE_SCHEME_CALLBACK(aligned_side, (SCM element, SCM axis));
55 DECLARE_SCHEME_CALLBACK(quantised_position, (SCM element, SCM axis));
56 DECLARE_SCHEME_CALLBACK(centered_on_parent, (SCM element, SCM axis));
57 static void set_axis (Score_element*,Axis);
58 static void set_minimum_space (Score_element*,Real);
59 static void set_padding (Score_element*,Real);
60 static Axis get_axis (Score_element*) ;
61 static bool supported_b (Score_element*) ;
62 static bool has_interface (Score_element*) ;
63 static void add_support (Score_element*,Score_element*);
64 static void add_staff_support (Score_element*);
65 static Direction get_direction (Score_element*);
66 static void set_direction (Score_element*,Direction);
70 #endif /* SIDE_POSITION_INTERFACE_HH */