2 grid-line-interface.cc -- implement Grid_line_interface
4 source file of the GNU LilyPond music typesetter
6 (c) 2005--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
9 #include "grid-line-interface.hh"
12 #include "pointer-group-interface.hh"
14 #include "output-def.hh"
17 MAKE_SCHEME_CALLBACK (Grid_line_interface, print, 1);
19 Grid_line_interface::print (SCM smobbed_me)
21 Grob *me = unsmob_grob (smobbed_me);
23 extract_grob_set (me, "elements", elts);
24 /* compute common refpoint of elements */
25 Grob *refp = common_refpoint_of_array (elts, me, Y_AXIS);
28 for (vsize i = 0; i < elts.size (); i++)
30 Grob *point = elts[i];
32 iv.unite (point->extent (refp, Y_AXIS));
41 Real staffline = me->layout ()->get_dimension (ly_symbol2scm ("line-thickness"));
42 Real thick = robust_scm2double (me->get_property ("thickness"), 1.0)
45 iv += -me->relative_coordinate (refp, Y_AXIS);
46 Stencil st = Lookup::filled_box (Box (Interval (0, thick),
49 return st.smobbed_copy ();
52 MAKE_SCHEME_CALLBACK (Grid_line_interface, width, 1);
54 Grid_line_interface::width (SCM smob)
56 Grob *me = unsmob_grob (smob);
58 Real staffline = me->layout ()->get_dimension (ly_symbol2scm ("line-thickness"));
59 Real thick = robust_scm2double (me->get_property ("thickness"), 1.0)
62 return ly_interval2scm (Interval (0, thick));
66 Grid_line_interface::add_grid_point (Grob *me, Grob *b)
68 Pointer_group_interface::add_grob (me, ly_symbol2scm ("elements"), b);
71 ADD_INTERFACE (Grid_line_interface, "grid-line-interface",
72 "A line that spanned between grid-points. ",
73 "elements thickness");
75 ADD_INTERFACE (Grid_point_interface, "grid-point-interface",
76 "A spanning point for grid lines. ",