2 bar.cc -- implement Bar
4 source file of the GNU LilyPond music typesetter
6 (c) 1997--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
11 #include "dimensions.hh"
12 #include "score-element.hh"
15 #include "molecule.hh"
16 #include "paper-def.hh"
19 #include "all-font-metrics.hh"
21 #include "staff-symbol-referencer.hh"
23 MAKE_SCHEME_CALLBACK(Bar,brew_molecule);
26 Bar::brew_molecule (SCM smob)
28 Score_element * me = unsmob_element (smob);
30 SCM s = me->get_elt_property ("glyph");
31 SCM barsiz_proc = me->get_elt_property ("barsize-procedure");
32 if (gh_string_p (s) && gh_procedure_p (barsiz_proc))
34 String str =ly_scm2string (s);
35 SCM siz = gh_call1 (barsiz_proc, me->self_scm_);
36 return compound_barline (me, str, gh_scm2double (siz)).create_scheme ();
43 Bar::compound_barline (Score_element*me, String str, Real h)
45 Real kern = gh_scm2double (me->get_elt_property ("kern"));
46 Real thinkern = gh_scm2double (me->get_elt_property ("thin-kern"));
47 Real hair = gh_scm2double (me->get_elt_property ("hair-thickness"));
48 Real fatline = gh_scm2double (me->get_elt_property ("thick-thickness"));
50 Real staffline = me->paper_l ()->get_var ("stafflinethickness");
53 thinkern *= staffline;
57 Molecule thin = simple_barline (me, hair, h);
58 Molecule thick = simple_barline (me, fatline, h);
59 Molecule colon = me->lookup_l ()->afm_find ("dots-repeatcolon");
65 return me->lookup_l ()->blank (Box (Interval(0, 0), Interval (-h/2, h/2)));
67 if (str == "scorepostbreak")
69 return simple_barline (me, me->paper_l ()->get_var ("barthick_score"), h);
77 m.add_at_edge (X_AXIS, LEFT, thick, 0);
78 m.add_at_edge (X_AXIS, LEFT, thin, kern);
82 m.add_at_edge (X_AXIS, RIGHT, thick, 0);
83 m.add_at_edge (X_AXIS, RIGHT, thin, kern);
87 m.add_at_edge (X_AXIS, LEFT, thick, 0);
88 m.add_at_edge (X_AXIS, LEFT, thin, kern);
89 m.add_at_edge (X_AXIS, LEFT, colon, kern);
93 m.add_at_edge (X_AXIS, RIGHT, thick, 0);
94 m.add_at_edge (X_AXIS, RIGHT, thin, kern);
95 m.add_at_edge (X_AXIS, RIGHT, colon, kern);
97 else if (str == ":|:")
99 m.add_at_edge (X_AXIS, LEFT, thick, thinkern);
100 m.add_at_edge (X_AXIS, LEFT, colon, kern);
101 m.add_at_edge (X_AXIS, RIGHT, thick, kern);
102 m.add_at_edge (X_AXIS, RIGHT, colon, kern);
104 else if (str == ".|.")
106 m.add_at_edge (X_AXIS, LEFT, thick, thinkern);
107 m.add_at_edge (X_AXIS, RIGHT, thick, kern);
109 else if (str == "||")
111 m.add_at_edge (X_AXIS, RIGHT, thin, 0);
112 m.add_at_edge (X_AXIS, RIGHT, thin, thinkern);
120 Bar::simple_barline (Score_element*me,Real w, Real h)
122 return me->lookup_l ()->filledbox (Box (Interval(0,w), Interval(-h/2, h/2)));
125 MAKE_SCHEME_CALLBACK(Bar,before_line_breaking );
128 Bar::before_line_breaking (SCM smob)
130 Score_element*me=unsmob_element (smob);
131 Item * item = dynamic_cast<Item*> (me);
133 SCM g = me->get_elt_property ("glyph");
135 Direction bsd = item->break_status_dir ();
140 SCM breakdir = gh_int2scm (bsd);
141 g = scm_eval (gh_list (ly_symbol2scm ("break-barline"),
152 if (!gh_string_p (g))
154 me->set_elt_property ("molecule-callback", SCM_BOOL_T);
155 me->set_extent_callback (0, X_AXIS);
156 // leave y_extent for spanbar?
158 else if (! gh_equal_p (g, orig))
159 me->set_elt_property ("glyph", g);
162 return SCM_UNDEFINED;
166 Bar::set_interface (Score_element*me)
168 me->set_elt_property ("interfaces",
169 gh_cons (ly_symbol2scm ("bar-interface"), me->get_elt_property ("interfaces")));
173 Bar::has_interface (Score_element*m)
175 return m && m->has_interface (ly_symbol2scm ("bar-interface"));
179 MAKE_SCHEME_CALLBACK(Bar,get_staff_bar_size);
181 Bar::get_staff_bar_size (SCM smob)
183 Score_element*me = unsmob_element (smob);
184 Real ss = Staff_symbol_referencer::staff_space (me);
185 SCM size = me->get_elt_property ("bar-size");
186 if (gh_number_p (size))
187 return gh_double2scm (gh_scm2double(size)*ss);
190 return gh_double2scm ((Staff_symbol_referencer::line_count (me) -1) * ss);