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);
73 Real overlap = 0.1 * thickness;
75 Stencil bracket = Lookup::filled_box (Box (Interval (0, thickness),
77 * (height/2 + overlap)));
82 bracket.add_at_edge (Y_AXIS, d, tips[d], -overlap, 0.0);
84 while (flip (&d) != DOWN);
91 System_start_delimiter::simple_bar (Grob *me, Real h)
93 Real lt = me->get_layout ()->get_dimension (ly_symbol2scm ("linethickness"));
94 Real w = lt * robust_scm2double (me->get_property ("thickness"), 1);
95 return Lookup::round_filled_box (Box (Interval (0, w), Interval (-h / 2, h / 2)),
99 MAKE_SCHEME_CALLBACK (System_start_delimiter, after_line_breaking, 1);
102 System_start_delimiter::after_line_breaking (SCM smob)
104 Spanner *me = dynamic_cast<Spanner *> (unsmob_grob (smob));
106 SCM gl = me->get_property ("glyph");
107 if (ly_c_equal_p (gl, scm_makfrom0str ("bar-line")))
110 Paper_column *left_column = me->get_bound (LEFT)->get_column ();
113 Get all coordinates, to trigger Hara kiri.
115 SCM elts = me->get_property ("elements");
116 Grob *common = common_refpoint_of_list (elts, me, Y_AXIS);
117 for (SCM s = elts; scm_is_pair (s); s = scm_cdr (s))
119 Spanner *staff = dynamic_cast<Spanner*> (unsmob_grob (scm_car (s)));
121 staff->get_bound (LEFT)->get_column () != left_column)
124 Interval v = staff->extent (common, Y_AXIS);
135 return SCM_UNSPECIFIED;
138 MAKE_SCHEME_CALLBACK (System_start_delimiter, print, 1);
140 System_start_delimiter::print (SCM smob)
142 Spanner *me = unsmob_spanner (smob);
146 SCM s = me->get_property ("glyph");
147 if (!scm_is_string (s))
149 SCM gsym = scm_string_to_symbol (s);
151 Real staff_space = Staff_symbol_referencer::staff_space (me);
153 SCM elts = me->get_property ("elements");
154 Grob *common = common_refpoint_of_list (elts, me, Y_AXIS);
157 for (SCM s = elts; scm_is_pair (s); s = scm_cdr (s))
159 Spanner *sp = unsmob_spanner (scm_car (s));
161 && sp->get_bound (LEFT) == me->get_bound (LEFT))
163 Interval dims = sp->extent (common, Y_AXIS);
164 if (!dims.is_empty ())
169 ext -= me->relative_coordinate (common, Y_AXIS);
171 Real len = ext.length () / staff_space;
174 || (robust_scm2double (me->get_property ("collapse-height"), 0.0) >= len))
182 if (gsym == ly_symbol2scm ("bracket"))
183 m = staff_bracket (me, len);
184 else if (gsym == ly_symbol2scm ("brace"))
185 m = staff_brace (me, len);
186 else if (gsym == ly_symbol2scm ("bar-line"))
187 m = simple_bar (me, len);
189 m.translate_axis (ext.center (), Y_AXIS);
190 return m.smobbed_copy ();
194 System_start_delimiter::staff_brace (Grob *me, Real y)
197 /* We go through the style sheet to lookup the font file
198 name. This is better than using find_font directly,
199 esp. because that triggers mktextfm for non-existent
201 SCM fam = scm_cons (ly_symbol2scm ("font-encoding"),
202 ly_symbol2scm ("fetaBraces"));
204 SCM alist = scm_list_n (fam, SCM_UNDEFINED);
205 fm = select_font (me->get_layout (), scm_list_n (alist, SCM_UNDEFINED));
208 int hi = max (fm->count () - 1,2);
211 /* do a binary search for each Y, not very efficient, but passable? */
214 int cmp = (lo + hi) / 2;
215 b = fm->get_indexed_char (cmp);
216 if (b[Y_AXIS].is_empty () || b[Y_AXIS].length () > y)
223 Stencil stil (fm->find_by_name ("brace" + to_string (lo)));
224 b = stil.extent_box ();
225 b[X_AXIS] = Interval (0, 0);
227 return Stencil (b, stil.expr ());
230 ADD_INTERFACE (System_start_delimiter, "system-start-delimiter-interface",
231 "The brace, bracket or bar in front of the system. "
232 "It is implemented as a spanner.",
233 "collapse-height thickness "
234 "arch-height arch-angle arch-thick arch-width bracket-thick glyph");