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
37 Text_spanner::brew_molecule (SCM smob)
39 Grob *me= unsmob_grob (smob);
40 Spanner *spanner = dynamic_cast<Spanner*> (me);
42 /* Ugh, must be same as Hairpin::brew_molecule. */
44 SCM itp= me->get_grob_property ("if-text-padding");
45 if (gh_number_p (itp))
46 padding = gh_scm2double (itp);
48 Grob *common = spanner->get_bound (LEFT)->common_refpoint (spanner->get_bound (RIGHT), X_AXIS);
51 Drul_array<bool> broken;
55 Item *b = spanner->get_bound (d);
56 broken[d] = b->break_status_dir () != CENTER;
61 span_points[d] = spanner->get_broken_left_end_align ();
63 span_points[d] = b->relative_coordinate (common, X_AXIS);
67 bool encl = to_boolean (me->get_grob_property ("enclose-bounds"));
68 span_points[d] = b->extent (common, X_AXIS)[encl ? d : -d];
71 while (flip (&d) != LEFT);
75 SCM properties = Font_interface::font_alist_chain (me);
76 SCM edge_text = me->get_grob_property ("edge-text");
77 Drul_array<Molecule> edge;
78 if (gh_pair_p (edge_text))
83 /* Don't repeat edge text for broken end */
87 SCM text = index_get_cell (edge_text, d);
93 edge[d] = Text_item::interpret_new_markup (smob, properties, text);
94 if (!edge[d].empty_b ())
95 edge[d].align_to (Y_AXIS, CENTER);
97 while (flip (&d) != LEFT);
101 Drul_array<Real> shorten;
105 SCM ew = me->get_grob_property ("bracket-flare");
106 SCM s = me->get_grob_property ("shorten-pair");
109 span_points[LEFT] += gh_scm2double (ly_car (s));
110 span_points[RIGHT] -= gh_scm2double (ly_cdr (s));
114 span_points[LEFT] += gh_scm2double (ly_car (ew));
115 span_points[RIGHT] -= gh_scm2double (ly_cdr (ew));
118 Real thick = me->get_paper ()->get_realvar (ly_symbol2scm ("linethickness"));
119 SCM st = me->get_grob_property ("thickness");
120 if (gh_number_p (st))
122 thick *= gh_scm2double (st);
125 Drul_array<Molecule> edge_line;
126 s = me->get_grob_property ("edge-height");
130 int dir = to_dir (me->get_grob_property ("direction"));
138 dx = gh_scm2double (index_get_cell (ew, d)) * d;
140 Real dy = gh_scm2double (index_get_cell (s, d)) * - dir;
142 edge_line[d] = Line_spanner::line_molecule (me, thick, Offset(0,0),
145 while (flip (&d) != LEFT);
151 Interval ext = edge[d].extent (X_AXIS);
153 edge[d].translate_axis (span_points[d], X_AXIS);
154 m.add_molecule (edge[d]);
155 edge_line[d].translate_axis (span_points[d], X_AXIS);
156 m.add_molecule (edge_line[d]);
158 span_points[d] += -d * ext[-d];
160 while (flip (&d) != LEFT);
162 Molecule l =Line_spanner::line_molecule (me, thick,
163 Offset (span_points[LEFT], 0),
164 Offset (span_points[RIGHT], 0));
167 m.translate_axis (- me->relative_coordinate (common, X_AXIS), X_AXIS);
168 return m.smobbed_copy ();
174 ADD_INTERFACE (Text_spanner,"text-spanner-interface",
175 "generic text spanner",
176 "dash-period if-text-padding dash-length edge-height bracket-flare edge-text shorten-pair style thickness enclose-bounds width-correct");