2 This file is part of LilyPond, the GNU music typesetter.
4 Copyright (C) 1997--2015 Jan Nieuwenhuizen <janneke@gnu.org>
6 LilyPond is free software: you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation, either version 3 of the License, or
9 (at your option) any later version.
11 LilyPond is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
24 #include "font-interface.hh"
25 #include "line-interface.hh"
26 #include "paper-column.hh"
27 #include "output-def.hh"
28 #include "text-interface.hh"
29 #include "volta-bracket.hh"
30 #include "pointer-group-interface.hh"
31 #include "side-position-interface.hh"
32 #include "directional-element-interface.hh"
35 #include "lily-imports.hh"
38 this is too complicated. Yet another version of side-positioning,
43 * Should look for system_start_delim to find left edge of staff.
46 MAKE_SCHEME_CALLBACK (Volta_bracket_interface, print, 1);
48 Volta_bracket_interface::print (SCM smob)
50 Spanner *me = unsmob<Spanner> (smob);
51 Spanner *orig_span = dynamic_cast<Spanner *> (me->original ());
52 bool broken_first_bracket = orig_span && (orig_span->broken_intos_[0]
55 Output_def *layout = me->layout ();
57 Item *bound = dynamic_cast<Spanner *> (me)->get_bound (LEFT);
60 If the volta bracket appears after a line-break, make
61 it start after the prefatory matter.
64 if (bound->break_status_dir () == RIGHT)
66 Paper_column *pc = bound->get_column ();
67 left = pc->break_align_width (pc, ly_symbol2scm ("break-alignment"))[RIGHT]
68 // For some reason, break_align_width is relative to
69 // the x-parent of the column.
70 - bound->relative_coordinate (pc->get_parent (X_AXIS), X_AXIS);
75 the volta spanner is attached to the bar-line, which is moved
76 to the right. We don't need to compensate for the left edge.
80 modify_edge_height (me);
84 Drul_array<Real> edge_height = robust_scm2interval (me->get_property ("edge-height"),
86 Drul_array<Real> flare = robust_scm2interval (me->get_property ("bracket-flare"),
88 Drul_array<Real> shorten = robust_scm2interval (me->get_property ("shorten-pair"),
91 scale_drul (&edge_height, - Real (get_grob_direction (me)));
95 start[X_AXIS] = me->spanner_length () - left;
98 = Bracket::make_bracket (me, Y_AXIS, start, edge_height, empty,
101 if (!orig_span || broken_first_bracket)
103 SCM text = me->get_property ("text");
104 SCM properties = me->get_property_alist_chain (SCM_EOL);
105 SCM snum = Text_interface::interpret_markup (layout->self_scm (),
107 Stencil num = *unsmob<Stencil> (snum);
108 num.align_to (Y_AXIS, UP);
109 num.translate_axis (-0.5, Y_AXIS);
110 total.add_at_edge (X_AXIS, LEFT, num, - num.extent (X_AXIS).length ()
114 total.translate_axis (left, X_AXIS);
115 return total.smobbed_copy ();
119 Volta_bracket_interface::modify_edge_height (Spanner *me)
121 Spanner *orig_span = dynamic_cast<Spanner *> (me->original ());
123 bool broken_first_bracket = orig_span && (orig_span->broken_intos_[0] == (Spanner *)me);
124 bool broken_last_bracket = orig_span && (orig_span->broken_intos_.back () == (Spanner *)me);
125 bool no_vertical_start = orig_span && !broken_first_bracket;
126 bool no_vertical_end = orig_span && !broken_last_bracket;
128 extract_grob_set (me, "bars", bars);
129 Grob *endbar = bars.size () ? bars.back () : 0;
130 SCM glyph = endbar ? endbar->get_property ("glyph-name") : SCM_EOL;
133 if (scm_is_string (glyph))
134 str = ly_scm2string (glyph);
138 no_vertical_end |= ly_scm2bool (Lily::volta_bracket_calc_hook_visibility
139 (ly_string2scm (str)));
141 if (no_vertical_end || no_vertical_start)
143 Drul_array<Real> edge_height = robust_scm2interval (me->get_property ("edge-height"),
144 Interval (1.0, 1.0));
145 if (no_vertical_start)
146 edge_height[LEFT] = 0.0;
149 edge_height[RIGHT] = 0.0;
151 me->set_property ("edge-height", ly_interval2scm (edge_height));
154 if (broken_last_bracket && no_vertical_end && no_vertical_start
155 && !broken_first_bracket)
160 Volta_bracket_interface::add_bar (Grob *me, Item *b)
162 Pointer_group_interface::add_grob (me, ly_symbol2scm ("bars"), b);
163 add_bound_item (dynamic_cast<Spanner *> (me), b);
166 ADD_INTERFACE (Volta_bracket_interface,
167 "Volta bracket with number.",