2 text-spanner.cc -- implement Text_spanner
4 source file of the GNU LilyPond music typesetter
6 (c) 2000--2003 Jan Nieuwenhuizen <janneke@gnu.org>
8 Revised over good by Han-Wen.
11 #include "molecule.hh"
12 #include "text-item.hh"
13 #include "text-spanner.hh"
14 #include "line-spanner.hh"
16 #include "font-interface.hh"
17 #include "dimensions.hh"
18 #include "paper-def.hh"
20 #include "paper-column.hh"
21 #include "staff-symbol-referencer.hh"
25 - vertical start / vertical end (fixme-name) |
26 - contination types (vert. star, vert. end) |-> eat volta-bracket
28 - more texts/positions
31 MAKE_SCHEME_CALLBACK (Text_spanner, brew_molecule, 1);
34 TODO: this function is too long
39 Text_spanner::brew_molecule (SCM smob)
41 Grob *me= unsmob_grob (smob);
42 Spanner *spanner = dynamic_cast<Spanner*> (me);
44 /* Ugh, must be same as Hairpin::brew_molecule. */
46 SCM itp= me->get_grob_property ("if-text-padding");
47 if (gh_number_p (itp))
48 padding = gh_scm2double (itp);
50 Grob *common = spanner->get_bound (LEFT)->common_refpoint (spanner->get_bound (RIGHT), X_AXIS);
51 Paper_def * paper = me->get_paper();
53 SCM flare = me->get_grob_property ("bracket-flare");
54 SCM shorten = me->get_grob_property ("shorten-pair");
57 Drul_array<bool> broken;
61 Item *b = spanner->get_bound (d);
62 broken[d] = b->break_status_dir () != CENTER;
67 span_points[d] = spanner->get_broken_left_end_align ();
69 span_points[d] = b->relative_coordinate (common, X_AXIS);
73 bool encl = to_boolean (me->get_grob_property ("enclose-bounds"));
74 span_points[d] = b->extent (common, X_AXIS)[encl ? d : -d];
76 if (is_number_pair (shorten))
77 span_points -= d * gh_scm2double (index_get_cell (shorten, d));
80 if (is_number_pair (flare))
81 span_points -= d * gh_scm2double (index_get_cell (flare, d));
83 while (flip (&d) != LEFT);
86 SCM properties = Font_interface::font_alist_chain (me);
87 SCM edge_text = me->get_grob_property ("edge-text");
88 Drul_array<Molecule> edge;
89 if (gh_pair_p (edge_text))
94 if (!to_boolean (me->get_grob_property ("text-repeat-if-broken"))
98 SCM text = index_get_cell (edge_text, d);
100 if (Text_item::markup_p (text))
101 edge[d] = *unsmob_molecule (Text_item::interpret_markup (paper->self_scm (), properties, text));
103 if (!edge[d].is_empty ())
104 edge[d].align_to (Y_AXIS, CENTER);
106 while (flip (&d) != LEFT);
109 Real thick = paper->get_realvar (ly_symbol2scm ("linethickness"));
110 SCM st = me->get_grob_property ("thickness");
111 if (gh_number_p (st))
113 thick *= gh_scm2double (st);
116 Drul_array<Real> edge_height = robust_scm2interval (me->get_grob_property ("edge-height"),
117 Interval (1.0, 1.0));
118 Drul_array<Molecule> edge_line;
121 int dir = to_dir (me->get_grob_property ("direction"));
128 if (gh_pair_p (flare))
129 dx = gh_scm2double (index_get_cell (flare, d)) * d;
131 Real dy = - dir * edge_height[d] ;
133 edge_line[d] = Line_spanner::line_molecule (me, thick, Offset(0,0),
136 while (flip (&d) != LEFT);
142 Interval ext = edge[d].extent (X_AXIS);
143 if (!ext.is_empty ())
145 edge[d].translate_axis (span_points[d], X_AXIS);
146 m.add_molecule (edge[d]);
147 span_points[d] += -d * ext[-d];
150 while (flip (&d) != LEFT);
153 if (d* span_points[d] > d * edge[-d].extent(X_AXIS)[d])
155 edge_line[d].translate_axis (span_points[d], X_AXIS);
156 m.add_molecule (edge_line[d]);
159 while (flip (&d) != LEFT);
161 if (!span_points.is_empty ())
163 Molecule l =Line_spanner::line_molecule (me, thick,
164 Offset (span_points[LEFT], 0),
165 Offset (span_points[RIGHT], 0));
168 m.translate_axis (- me->relative_coordinate (common, X_AXIS), X_AXIS);
169 return m.smobbed_copy ();
175 ADD_INTERFACE (Text_spanner,"text-spanner-interface",
176 "generic text spanner",
177 "text-repeat-if-broken dash-period if-text-padding dash-fraction edge-height bracket-flare edge-text shorten-pair style thickness enclose-bounds width-correct");