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::width_callback (Dimension_cache const * c)
34 Span_bar* s= dynamic_cast<Span_bar*> (c->element_l ());
35 Molecule m = s->lookup_l ()->bar (s->type_str_, 40 PT, s->paper_l ());
37 return m.extent (X_AXIS);
41 Span_bar::do_pre_processing ()
43 Bar::do_pre_processing ();
47 // set_empty (false, Y_AXIS); // a hack to make mark scripts work.
51 Span_bar::do_post_processing ()
53 Bar::do_post_processing ();
54 Interval i(get_spanned_interval ());
56 translate_axis (i.center (), Y_AXIS);
60 Span_bar::evaluate_empty ()
62 if (spanning_l_arr_.size () < 1)
64 set_elt_property ("transparent", SCM_BOOL_T);
68 if (type_str_.empty_b ())
70 set_elt_property ("transparent", SCM_BOOL_T);
74 else if (type_str_ == "|:")
78 else if (type_str_ == ":|")
82 else if (type_str_ == ":|:")
89 Span_bar::get_spanned_interval () const
93 for (int i=0; i < spanning_l_arr_.size (); i++)
95 Score_element*common = common_refpoint (spanning_l_arr_[i], Y_AXIS);
96 Real y = spanning_l_arr_[i]->relative_coordinate (common, Y_AXIS)
97 - relative_coordinate (common, Y_AXIS);
99 y_int.unite (y + spanning_l_arr_[i]->extent(Y_AXIS));
105 Span_bar::height_callback (Dimension_cache const *c)
107 Span_bar * s= dynamic_cast<Span_bar*> (c->element_l ());
108 return s->get_spanned_interval ();
112 Span_bar::do_brew_molecule_p () const
114 Interval iv (get_spanned_interval ());
115 Molecule*output = new Molecule;
118 output->add_molecule (lookup_l ()->bar (type_str_, iv.length (), paper_l ()));
122 programming_error("Huh? My children deflated (FIXME)");
129 Span_bar::Span_bar ()
132 dim_cache_[X_AXIS]->set_callback (width_callback);
133 dim_cache_[Y_AXIS]->set_callback (height_callback);