2 #include "simple-closure.hh"
5 axis_offset_symbol (Axis a)
8 ? ly_symbol2scm ("X-offset")
9 : ly_symbol2scm ("Y-offset");
13 axis_parent_positioning (Axis a)
16 ? Grob::x_parent_positioning_proc
17 : Grob::y_parent_positioning_proc;
27 (+ (PROC GROB) (orig-proc GROB))
30 add_offset_callback (Grob *g, SCM proc, Axis a)
32 SCM data = g->get_property_data (axis_offset_symbol (a));
33 if (!scm_is_number (data)
34 && !ly_is_procedure (data)
35 && !is_simple_closure (data))
37 g->set_property (axis_offset_symbol (a), proc);
41 if (ly_is_procedure (data))
42 data = ly_make_simple_closure (scm_list_1 (data));
43 else if (is_simple_closure (data))
44 data = simple_closure_expression (data);
46 SCM plus = ly_lily_module_constant ("+");
48 if (ly_is_procedure (proc))
49 proc = ly_make_simple_closure (scm_list_1 (proc));
51 SCM expr = scm_list_3 (plus, proc, data);
52 g->set_property (axis_offset_symbol (a), ly_make_simple_closure (expr));
62 (PROC GROB (orig-proc GROB))
65 chain_callback (Grob *g, SCM proc, SCM sym)
67 SCM data = g->get_property_data (sym);
69 if (ly_is_procedure (data))
70 data = ly_make_simple_closure (scm_list_1 (data));
71 else if (is_simple_closure (data))
72 data = simple_closure_expression (data);
75 Data may be nonnumber. In that case, it is assumed to be
81 SCM expr = scm_list_2 (proc, data);
84 // twice: one as a wrapper for grob property routines,
85 // once for the actual delayed binding.
86 ly_make_simple_closure (ly_make_simple_closure (expr)));
90 chain_offset_callback (Grob *g, SCM proc, Axis a)
92 chain_callback (g, proc, axis_offset_symbol (a));