2 This file is part of LilyPond, the GNU music typesetter.
4 Copyright (C) 2004--2015 Han-Wen Nienhuys <hanwen@xs4all.nl>
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/>.
20 #include "text-interface.hh"
23 #include "line-interface.hh"
25 #include "font-interface.hh"
26 #include "lily-guile.hh"
27 #include "output-def.hh"
31 class Balloon_interface
34 DECLARE_SCHEME_CALLBACK (print, (SCM));
35 DECLARE_SCHEME_CALLBACK (print_spanner, (SCM));
37 static SCM internal_balloon_print (Grob *me, Grob *p, Offset off);
40 MAKE_SCHEME_CALLBACK (Balloon_interface, print, 1);
42 Balloon_interface::print (SCM smob)
44 Grob *me = unsmob<Grob> (smob);
46 if (Item *item = dynamic_cast<Item *> (me))
47 if (!Item::break_visible (item))
50 Grob *p = me->get_parent (X_AXIS);
52 Offset off (me->relative_coordinate (p, X_AXIS),
53 me->relative_coordinate (p, Y_AXIS));
55 return internal_balloon_print (me, p, off);
58 MAKE_SCHEME_CALLBACK (Balloon_interface, print_spanner, 1);
60 Balloon_interface::print_spanner (SCM smob)
62 Spanner *me = unsmob<Spanner> (smob);
63 Spanner *orig = dynamic_cast<Spanner *> (me->original ());
67 Direction spanner_placement = robust_scm2dir (me->get_property ("spanner-placement"), LEFT);
69 Spanner *wanted = (spanner_placement != RIGHT)
70 ? orig->broken_intos_[0]
71 : orig->broken_intos_.back ();
77 Spanner *p = dynamic_cast<Spanner *> (me->get_parent (Y_AXIS));
82 Offset off (me->relative_coordinate (me->get_bound (LEFT), X_AXIS),
83 me->relative_coordinate (p, Y_AXIS));
84 return internal_balloon_print (me, p, off);
88 Balloon_interface::internal_balloon_print (Grob *me, Grob *p, Offset off)
90 Box b (robust_relative_extent (p, p, X_AXIS),
91 robust_relative_extent (p, p, Y_AXIS));
92 Real padding = robust_scm2double (me->get_property ("padding"), .1);
93 b.widen (padding, padding);
97 if (to_boolean (me->get_property ("annotation-balloon")))
98 fr = Lookup::frame (b, 0.1, 0.05);
100 SCM bt = me->get_property ("text");
101 SCM chain = Font_interface::text_font_alist_chain (me);
102 SCM stencil = Text_interface::interpret_markup (me->layout ()->self_scm (),
104 Stencil *text_stil = unsmob<Stencil> (stencil);
108 for (int i = X_AXIS; i < NO_AXES; i++)
111 z1[a] = b[a].linear_combination (sign (off[a]));
112 text_stil->align_to (a, -sign (off[a]));
115 Offset z2 = z1 + off;
117 if (to_boolean (me->get_property ("annotation-line")))
118 fr.add_stencil (Line_interface::line (me, z1, z2));
120 text_stil->translate (z2);
121 fr.add_stencil (*text_stil);
124 return fr.smobbed_copy ();
127 ADD_INTERFACE (Balloon_interface,
128 "A collection of routines to put text balloons around an"
132 "annotation-balloon "