2 text-spanner.cc -- implement Text_spanner
4 source file of the GNU LilyPond music typesetter
6 (c) 2000--2005 Jan Nieuwenhuizen <janneke@gnu.org>
8 Revised over good by Han-Wen.
11 #include "text-spanner.hh"
13 #include "text-item.hh"
14 #include "line-spanner.hh"
16 #include "font-interface.hh"
17 #include "dimensions.hh"
18 #include "output-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, print, 1);
34 TODO: this function is too long
37 Text_spanner::print (SCM smob)
39 Grob *me = unsmob_grob (smob);
40 Spanner *spanner = dynamic_cast<Spanner *> (me);
42 /* Ugh, must be same as Hairpin::print. */
44 Grob *common = spanner->get_bound (LEFT)->common_refpoint (spanner->get_bound (RIGHT), X_AXIS);
45 Output_def *layout = me->get_layout ();
47 SCM flare = me->get_property ("bracket-flare");
48 SCM shorten = me->get_property ("shorten-pair");
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 Real encl = robust_scm2double (me->get_property ("enclose-bounds"), 0.0);
68 Interval ext = b->extent (common, X_AXIS);
71 = robust_relative_extent (b, common, X_AXIS).linear_combination (d * encl);
73 if (is_number_pair (shorten))
74 span_points -= d * scm_to_double (index_get_cell (shorten, d));
77 if (is_number_pair (flare))
78 span_points -= d * scm_to_double (index_get_cell (flare, d));
80 while (flip (&d) != LEFT);
82 SCM properties = Font_interface::text_font_alist_chain (me);
83 SCM edge_text = me->get_property ("edge-text");
84 Drul_array<Stencil> edge;
85 if (scm_is_pair (edge_text))
93 SCM text = index_get_cell (edge_text, d);
95 if (Text_interface::markup_p (text))
96 edge[d] = *unsmob_stencil (Text_interface::interpret_markup (layout->self_scm (), properties, text));
98 if (!edge[d].is_empty ())
99 edge[d].align_to (Y_AXIS, CENTER);
101 while (flip (&d) != LEFT);
104 Drul_array<Real> edge_height = robust_scm2interval (me->get_property ("edge-height"),
105 Interval (0.0, 0.0));
106 Drul_array<Stencil> edge_line;
109 int dir = to_dir (me->get_property ("direction"));
116 if (is_number_pair (flare))
117 dx = scm_to_double (index_get_cell (flare, d)) * d;
119 Real dy = -dir * edge_height[d];
121 edge_line[d] = Line_spanner::line_stencil (me, Offset (0, 0), Offset (dx, dy));
123 while (flip (&d) != LEFT);
129 Interval ext = edge[d].extent (X_AXIS);
130 if (!ext.is_empty ())
132 Real pad = robust_scm2double (me->get_property ("bound-padding"), 0.0);
133 edge[d].translate_axis (span_points[d], X_AXIS);
134 m.add_stencil (edge[d]);
135 span_points[d] += -d * (ext[-d] + pad);
138 while (flip (&d) != LEFT);
142 if (d * span_points[d] > d * edge[-d].extent (X_AXIS)[d])
144 edge_line[d].translate_axis (span_points[d], X_AXIS);
145 m.add_stencil (edge_line[d]);
148 while (flip (&d) != LEFT);
150 if (!span_points.is_empty ())
152 Stencil l = Line_spanner::line_stencil (me,
153 Offset (span_points[LEFT], 0),
154 Offset (span_points[RIGHT], 0));
157 m.translate_axis (- me->relative_coordinate (common, X_AXIS), X_AXIS);
158 return m.smobbed_copy ();
161 ADD_INTERFACE (Text_spanner, "text-spanner-interface",
162 "generic text spanner",
163 "bound-padding dash-period dash-fraction edge-height bracket-flare edge-text shorten-pair style thickness enclose-bounds");