2 span-bar.cc -- implement Span_bar
4 source file of the GNU LilyPond music typesetter
6 (c) 1997--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
8 #include "dimension-cache.hh"
11 #include "dimensions.hh"
12 #include "paper-def.hh"
13 #include "molecule.hh"
15 #include "axis-group-interface.hh"
16 #include "group-interface.hh"
19 Span_bar::add_bar (Score_element*b)
21 Group_interface gi (this);
29 Span_bar::width_callback (Dimension_cache const * c)
31 Span_bar* s= dynamic_cast<Span_bar*> (c->element_l ());
32 String gl = ly_scm2string (s->get_elt_property ("glyph"));
37 Molecule m = s->compound_barline (gl, 40 PT);
39 return m.extent (X_AXIS);
43 Span_bar::before_line_breaking ()
45 Bar::before_line_breaking ();
51 Span_bar::after_line_breaking ()
53 Bar::after_line_breaking ();
54 Interval i (get_spanned_interval ());
55 translate_axis (i.center (), Y_AXIS);
59 Span_bar::evaluate_empty ()
61 if (!gh_pair_p (get_elt_property ("elements")))
63 set_elt_property ("transparent", SCM_BOOL_T);
64 set_extent_callback (0, X_AXIS);
65 set_extent_callback (0, Y_AXIS);
68 SCM gl = get_elt_property ("glyph");
69 if (!gh_string_p (gl))
71 set_elt_property ("transparent", SCM_BOOL_T);
72 set_extent_callback (0, X_AXIS);
73 set_extent_callback (0, Y_AXIS);
76 String type_str = ly_scm2string (gl);
81 else if (type_str== ":|")
85 else if (type_str== ":|:")
90 set_elt_property ("glyph", ly_str02scm (type_str.ch_C()));
95 Span_bar::get_spanned_interval () const
97 return Axis_group_interface::group_extent_callback (dim_cache_[Y_AXIS]);
102 Span_bar::get_bar_size () const
104 Interval iv (get_spanned_interval ());
107 programming_error("Huh? My children deflated (FIXME)");
113 Span_bar::Span_bar ()
115 group (this).set_interface ();
116 dim_cache_[X_AXIS]->set_extent_callback (width_callback);
118 // dim_cache_[Y_AXIS]->set_extent_callback (Axis_group_interface::group_extent_callback);
120 dim_cache_[Y_AXIS]->set_extent_callback (0);