2 This file is part of LilyPond, the GNU music typesetter.
4 Copyright (C) 2004--2011 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));
36 DECLARE_GROB_INTERFACE ();
38 static SCM internal_balloon_print (Grob *me, Grob *p, Offset off);
41 MAKE_SCHEME_CALLBACK (Balloon_interface, print, 1);
43 Balloon_interface::print (SCM smob)
45 Grob *me = unsmob_grob (smob);
47 if (Item *item = dynamic_cast<Item *> (me))
48 if (!Item::break_visible (item))
51 Grob *p = me->get_parent (X_AXIS);
53 Offset off (me->relative_coordinate (p, X_AXIS),
54 me->relative_coordinate (p, Y_AXIS));
56 return internal_balloon_print (me, p, off);
59 // ugh...code dup...hopefully can be consolidated w/ above one day
60 MAKE_SCHEME_CALLBACK (Balloon_interface, print_spanner, 1);
62 Balloon_interface::print_spanner (SCM smob)
64 Spanner *me = unsmob_spanner (smob);
65 Grob *orig = me->original ();
69 // TODO : consolidate code dup from System::get_footnote_grobs_in_range
70 int pos = orig->spanned_rank_interval ()[LEFT];
71 Real spanner_placement = min (1.0,
72 max (robust_scm2double (me->get_property ("spanner-placement"), -1.0),
75 spanner_placement = (spanner_placement + 1.0) / 2.0;
76 int rpos = orig->spanned_rank_interval ()[RIGHT];
77 pos = (int)((rpos - pos) * spanner_placement + pos + 0.5);
79 if (pos < me->spanned_rank_interval () [LEFT])
81 if (pos >= me->spanned_rank_interval () [RIGHT] && (me->spanned_rank_interval () [RIGHT] != orig->spanned_rank_interval () [RIGHT]))
86 Spanner *p = dynamic_cast<Spanner *> (me->get_parent (Y_AXIS));
91 Offset off (me->relative_coordinate (me->get_bound (LEFT), X_AXIS),
92 me->relative_coordinate (p, Y_AXIS));
93 return internal_balloon_print (me, p, off);
97 Balloon_interface::internal_balloon_print (Grob *me, Grob *p, Offset off)
99 Box b (p->extent (p, X_AXIS),
100 p->extent (p, Y_AXIS));
101 Real padding = robust_scm2double (me->get_property ("padding"), .1);
102 b.widen (padding, padding);
106 if (to_boolean (me->get_property ("annotation-balloon")))
107 fr = Lookup::frame (b, 0.1, 0.05);
109 SCM bt = me->get_property ("text");
110 SCM chain = Font_interface::text_font_alist_chain (me);
112 SCM stencil = Text_interface::interpret_markup (me->layout ()->self_scm (),
115 Stencil *text_stil = unsmob_stencil (stencil);
118 for (int i = X_AXIS; i < NO_AXES; i++)
121 z1[a] = b[a].linear_combination (sign (off[a]));
122 text_stil->align_to (a, -sign (off[a]));
125 Offset z2 = z1 + off;
127 if (to_boolean (me->get_property ("annotation-line")))
128 fr.add_stencil (Line_interface::line (me, z1, z2));
130 text_stil->translate (z2);
131 fr.add_stencil (*text_stil);
134 return fr.smobbed_copy ();
137 ADD_INTERFACE (Balloon_interface,
138 "A collection of routines to put text balloons around an"
142 "annotation-balloon "