2 system-start-delimiter.cc -- implement System_start_delimiter
4 source file of the GNU LilyPond music typesetter
6 (c) 2000--2005 Han-Wen Nienhuys <hanwen@cs.uu.nl>
9 #include "system-start-delimiter.hh"
14 #include "axis-group-interface.hh"
15 #include "output-def.hh"
16 #include "font-interface.hh"
17 #include "all-font-metrics.hh"
18 #include "staff-symbol-referencer.hh"
23 System_start_delimiter::old_staff_bracket (Grob *me, Real height)
25 Real arc_height = scm_to_double (me->get_property ("arch-height"));
27 SCM at = scm_list_n (ly_symbol2scm ("bracket"),
28 me->get_property ("arch-angle"),
29 me->get_property ("arch-width"),
30 scm_make_real (arc_height),
31 scm_make_real (height),
32 me->get_property ("arch-thick"),
33 me->get_property ("thickness"),
40 In system-start-delimiter.cc I see the line
42 Real h = height + 2 * arc_height;
44 But I really think that you mean
46 Real h = height + 2 * arc_width;
48 (arc_height changes the x-axis-size of arc ; arc_width changes the
50 Will not fix it since I'm not sure.
54 Real h = height + 2 * arc_height;
55 Box b (Interval (0, 1.5), Interval (-h / 2, h / 2));
57 mol.align_to (X_AXIS, CENTER);
64 System_start_delimiter::staff_bracket (Grob *me, Real height)
66 Font_metric *fm = Font_interface::get_default_font (me);
67 Drul_array<Stencil> tips (fm->find_by_name ("brackettips.down"),
68 fm->find_by_name ("brackettips.up"));
70 Real thickness = robust_scm2double (me->get_property ("thickness"), 0.25);
72 Stencil bracket = Lookup::filled_box (Box (Interval (0, thickness),
73 Interval (-height/2, height/2)));
78 bracket.add_at_edge (Y_AXIS, d, tips[d], 0.0, 0.0);
80 while (flip (&d) != DOWN);
87 System_start_delimiter::simple_bar (Grob *me, Real h)
89 Real lt = me->get_layout ()->get_dimension (ly_symbol2scm ("linethickness"));
90 Real w = lt * robust_scm2double (me->get_property ("thickness"), 1);
91 return Lookup::round_filled_box (Box (Interval (0, w), Interval (-h / 2, h / 2)),
95 MAKE_SCHEME_CALLBACK (System_start_delimiter, after_line_breaking, 1);
98 System_start_delimiter::after_line_breaking (SCM smob)
100 Spanner *me = dynamic_cast<Spanner *> (unsmob_grob (smob));
102 SCM gl = me->get_property ("glyph");
103 if (ly_c_equal_p (gl, scm_makfrom0str ("bar-line")))
106 Paper_column *left_column = me->get_bound (LEFT)->get_column ();
109 Get all coordinates, to trigger Hara kiri.
111 SCM elts = me->get_property ("elements");
112 Grob *common = common_refpoint_of_list (elts, me, Y_AXIS);
113 for (SCM s = elts; scm_is_pair (s); s = scm_cdr (s))
115 Spanner *staff = dynamic_cast<Spanner*> (unsmob_grob (scm_car (s)));
117 staff->get_bound (LEFT)->get_column () != left_column)
120 Interval v = staff->extent (common, Y_AXIS);
131 return SCM_UNSPECIFIED;
134 MAKE_SCHEME_CALLBACK (System_start_delimiter, print, 1);
136 System_start_delimiter::print (SCM smob)
138 Spanner *me = unsmob_spanner (smob);
142 SCM s = me->get_property ("glyph");
143 if (!scm_is_string (s))
145 SCM gsym = scm_string_to_symbol (s);
147 Real staff_space = Staff_symbol_referencer::staff_space (me);
149 SCM elts = me->get_property ("elements");
150 Grob *common = common_refpoint_of_list (elts, me, Y_AXIS);
153 for (SCM s = elts; scm_is_pair (s); s = scm_cdr (s))
155 Spanner *sp = unsmob_spanner (scm_car (s));
157 && sp->get_bound (LEFT) == me->get_bound (LEFT))
159 Interval dims = sp->extent (common, Y_AXIS);
160 if (!dims.is_empty ())
165 ext -= me->relative_coordinate (common, Y_AXIS);
167 Real len = ext.length () / staff_space;
170 || (robust_scm2double (me->get_property ("collapse-height"), 0.0) >= len))
178 if (gsym == ly_symbol2scm ("bracket"))
179 m = staff_bracket (me, len);
180 else if (gsym == ly_symbol2scm ("brace"))
181 m = staff_brace (me, len);
182 else if (gsym == ly_symbol2scm ("bar-line"))
183 m = simple_bar (me, len);
185 m.translate_axis (ext.center (), Y_AXIS);
186 return m.smobbed_copy ();
190 System_start_delimiter::staff_brace (Grob *me, Real y)
193 /* We go through the style sheet to lookup the font file
194 name. This is better than using find_font directly,
195 esp. because that triggers mktextfm for non-existent
197 SCM fam = scm_cons (ly_symbol2scm ("font-encoding"),
198 ly_symbol2scm ("fetaBraces"));
200 SCM alist = scm_list_n (fam, SCM_UNDEFINED);
201 fm = select_font (me->get_layout (), scm_list_n (alist, SCM_UNDEFINED));
204 int hi = max (fm->count () - 1,2);
207 /* do a binary search for each Y, not very efficient, but passable? */
210 int cmp = (lo + hi) / 2;
211 b = fm->get_indexed_char (cmp);
212 if (b[Y_AXIS].is_empty () || b[Y_AXIS].length () > y)
219 Stencil stil (fm->find_by_name ("brace" + to_string (lo)));
220 b = stil.extent_box ();
221 b[X_AXIS] = Interval (0, 0);
223 return Stencil (b, stil.expr ());
226 ADD_INTERFACE (System_start_delimiter, "system-start-delimiter-interface",
227 "The brace, bracket or bar in front of the system. "
228 "It is implemented as a spanner.",
229 "collapse-height thickness "
230 "arch-height arch-angle arch-thick arch-width bracket-thick glyph");