2 span-bar.cc -- implement Span_bar
4 source file of the GNU LilyPond music typesetter
6 (c) 1997--1999 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"
14 #include "align-element.hh"
18 Span_bar::add_bar (Score_element*b)
20 spanning_l_arr_.push (b);
25 Span_bar::do_substitute_element_pointer (Score_element*o, Score_element*n)
27 spanning_l_arr_.unordered_substitute (o, n);
32 Span_bar::do_width () const
34 Molecule m = lookup_l ()->bar (type_str_, 40 PT, paper_l ());
36 return m.extent (X_AXIS);
40 Span_bar::do_pre_processing ()
42 Bar::do_pre_processing ();
46 set_empty (false, Y_AXIS); // a hack to make mark scripts work.
50 Span_bar::do_post_processing ()
52 Bar::do_post_processing ();
53 Interval i(get_spanned_interval ());
55 translate_axis (i.center (), Y_AXIS);
59 Span_bar::evaluate_empty ()
61 if (spanning_l_arr_.size () < 1)
63 set_elt_property (transparent_scm_sym, SCM_BOOL_T);
64 set_empty (true, X_AXIS, Y_AXIS);
67 if (type_str_.empty_b ())
69 set_elt_property (transparent_scm_sym, SCM_BOOL_T);
72 else if (type_str_ == "|:")
76 else if (type_str_ == ":|")
80 else if (type_str_ == ":|:")
87 Span_bar::get_spanned_interval () const
91 for (int i=0; i < spanning_l_arr_.size (); i++)
93 Graphical_element*common = common_refpoint (spanning_l_arr_[i], Y_AXIS);
94 Real y = spanning_l_arr_[i]->relative_coordinate (common, Y_AXIS)
95 - relative_coordinate (common, Y_AXIS);
97 y_int.unite (y + spanning_l_arr_[i]->extent(Y_AXIS));
103 Span_bar::do_height () const
105 return get_spanned_interval ();
109 Span_bar::do_brew_molecule_p () const
111 Interval iv (get_spanned_interval ());
112 Molecule*output = new Molecule;
115 output->add_molecule (lookup_l ()->bar (type_str_, iv.length (), paper_l ()));
119 programming_error("Huh? My children deflated (FIXME)");
126 Span_bar::Span_bar ()