2 ottava-bracket.cc -- implement Ottava_bracket
4 source file of the GNU LilyPond music typesetter
6 (c) 2004 Han-Wen Nienhuys <hanwen@xs4all.nl>
11 #include "text-item.hh"
12 #include "line-spanner.hh"
14 #include "font-interface.hh"
15 #include "dimensions.hh"
16 #include "output-def.hh"
18 #include "paper-column.hh"
19 #include "staff-symbol-referencer.hh"
20 #include "note-column.hh"
21 #include "directional-element-interface.hh"
22 #include "tuplet-bracket.hh"
26 DECLARE_SCHEME_CALLBACK (print, (SCM));
27 static bool has_interface (Grob*);
32 TODO: the string for ottava shoudl depend on the available space, ie.
35 Long: 15ma Short: 15ma Empty: 15
41 MAKE_SCHEME_CALLBACK (Ottava_bracket, print, 1);
43 Ottava_bracket::print (SCM smob)
45 Spanner*me = dynamic_cast<Spanner*> (unsmob_grob (smob));
50 Grob *common = me->get_bound (LEFT)->common_refpoint (me->get_bound (RIGHT), X_AXIS);
51 Output_def * paper = me->get_paper ();
54 Drul_array<bool> broken;
58 Item *b = me->get_bound (d);
59 broken[d] = (b->break_status_dir () != CENTER);
61 if (Note_column::has_interface (b))
63 common = common_refpoint_of_list (b->get_property ("heads"), common, X_AXIS);
66 while (flip (&d) != LEFT);
68 SCM properties = Font_interface::text_font_alist_chain (me);
69 SCM markup = me->get_property ("text");
71 if (Text_item::markup_p (markup))
72 text = *unsmob_stencil (Text_item::interpret_markup (paper->self_scm (), properties, markup));
75 Drul_array<Real> shorten = robust_scm2interval (me->get_property ("shorten-pair"),
80 TODO: we should check if there are ledgers, and modify length of
85 Item *b = me->get_bound (d);
88 if (Note_column::has_interface (b))
90 for (SCM s = b->get_property ("note-heads"); ly_c_pair_p (s); s =ly_cdr (s))
91 ext.unite (unsmob_grob (ly_car (s))->extent (common, X_AXIS));
96 Real x = b->relative_coordinate (common, X_AXIS);
99 span_points[d] = (broken [d]) ? b->extent (common, X_AXIS)[-d] : ext[d];
104 while (flip (&d) != LEFT);
108 0.3 is ~ italic correction.
110 Real text_size = text.extent (X_AXIS).is_empty ()
111 ? 0.0 : text.extent (X_AXIS)[RIGHT] + 0.3;
113 span_points[LEFT] = span_points[LEFT]
114 <? (span_points[RIGHT] - text_size
115 - robust_scm2double (me->get_property ("minimum-length"), -1.0));
117 Interval bracket_span_points = span_points;
118 bracket_span_points[LEFT] += text_size;
120 Drul_array<Real> edge_height = robust_scm2interval (me->get_property ("edge-height"),
121 Interval (1.0, 1.0));
124 Drul_array<Real> flare = robust_scm2interval (me->get_property ("bracket-flare"),
129 edge_height[LEFT] = 0.0;
130 edge_height[RIGHT] *= - get_grob_direction (me);
132 edge_height[RIGHT] = 0.0;
136 if (!bracket_span_points.is_empty () && bracket_span_points.length () > 0.001)
137 b = Tuplet_bracket::make_bracket (me,
138 Y_AXIS, Offset (bracket_span_points.length (), 0),
144 The vertical lines should not take space, for the following scenario:
152 Just a small amount, yes. In tight situations, it is even
153 possible to center the `8' directly below the note, dropping the
154 ottava line completely...
158 b = Stencil (Box (b.extent (X_AXIS),
162 b.translate_axis (bracket_span_points[LEFT], X_AXIS);
163 text.translate_axis (span_points[LEFT], X_AXIS);
164 text.align_to (Y_AXIS, CENTER);
165 b.add_stencil (text);
167 b.translate_axis (- me->relative_coordinate (common, X_AXIS), X_AXIS);
169 return b.smobbed_copy ();
173 ADD_INTERFACE (Ottava_bracket, "ottava-bracket-interface",
175 "edge-height bracket-flare shorten-pair minimum-length");