Use scalar instead of embedded_scm for context mod overrides.
[lilypond/mpolesky.git] / lily / piano-pedal-bracket.cc
bloba61474e51ba9a06bd291bbfc5ad5960a4db1330a
1 /*
2 piano-pedal-bracket.cc -- implement Piano_pedal_bracket
4 source file of the GNU LilyPond music typesetter
6 (c) 2003--2009 Han-Wen Nienhuys <hanwen@xs4all.nl>
7 */
9 #include "stencil.hh"
10 #include "spanner.hh"
11 #include "item.hh"
12 #include "tuplet-bracket.hh"
14 struct Piano_pedal_bracket
16 DECLARE_SCHEME_CALLBACK (print, (SCM));
17 DECLARE_GROB_INTERFACE ();
20 MAKE_SCHEME_CALLBACK (Piano_pedal_bracket, print, 1);
21 SCM
22 Piano_pedal_bracket::print (SCM smob)
24 Spanner *me = dynamic_cast<Spanner *> (unsmob_grob (smob));
25 Spanner *orig = dynamic_cast<Spanner *> (me->original ());
27 Drul_array<bool> broken (false, false);
28 Drul_array<Real> height = robust_scm2drul
29 (me->get_property ("edge-height"), Interval (0, 0));
30 Drul_array<Real> shorten = robust_scm2drul
31 (me->get_property ("shorten-pair"), Interval (0, 0));
32 Drul_array<Real> flare = robust_scm2drul
33 (me->get_property ("bracket-flare"), Interval (0, 0));
35 Grob *common = me->get_bound (LEFT)
36 ->common_refpoint (me->get_bound (RIGHT), X_AXIS);
37 Grob *textbit = unsmob_grob (me->get_object ("pedal-text"));
39 if (textbit)
40 common = common->common_refpoint (textbit, X_AXIS);
42 Interval span_points (0, 0);
43 Direction d = LEFT;
46 Item *b = me->get_bound (d);
47 broken[d] = b->break_status_dir () != CENTER;
48 if (broken[d])
50 if (orig
51 && ((d == RIGHT
52 && me->get_break_index () != orig->broken_intos_.size () - 1)
53 || (d == LEFT && me->get_break_index ())))
54 height[d] = 0.0;
55 else
56 flare[d] = 0.0;
59 Interval ext = robust_relative_extent (b, common, X_AXIS);
60 span_points[d] = ext [broken[d] ? RIGHT : LEFT];
62 while (flip (&d) != LEFT);
64 /* For 'Mixed' style pedals, i.e. a bracket preceded by text: Ped._____|
65 need to shorten by the extent of the text grob
67 if (textbit)
69 height[LEFT] = 0;
71 Real padding = robust_scm2double (me->get_property ("bound-padding"), 0);
73 span_points[LEFT] = padding
74 + robust_relative_extent (textbit, common, X_AXIS)[RIGHT];
77 Stencil m;
78 if (!span_points.is_empty ()
79 && span_points.length () > 0.001)
81 m = Tuplet_bracket::make_bracket (me, Y_AXIS,
82 Offset (span_points.length (), 0),
83 height,
84 Interval (),
85 flare, shorten);
87 m.translate_axis (span_points[LEFT]
88 - me->relative_coordinate (common, X_AXIS), X_AXIS);
89 return m.smobbed_copy ();
92 ADD_INTERFACE (Piano_pedal_bracket,
93 "The bracket of the piano pedal. It can be tuned through"
94 " the regular bracket properties.",
96 /* properties */
97 "bound-padding "
98 "edge-height "
99 "shorten-pair "
100 "bracket-flare "
101 "pedal-text "