2 tie.cc -- implement Tie
4 source file of the GNU LilyPond music typesetter
6 (c) 1997--2007 Han-Wen Nienhuys <hanwen@xs4all.nl>
13 #include "directional-element-interface.hh"
14 #include "font-interface.hh"
15 #include "grob-array.hh"
17 #include "note-head.hh"
18 #include "output-def.hh"
19 #include "paper-column.hh"
20 #include "pointer-group-interface.hh"
21 #include "rhythmic-head.hh"
23 #include "staff-symbol-referencer.hh"
25 #include "text-interface.hh"
26 #include "tie-column.hh"
27 #include "tie-configuration.hh"
28 #include "tie-formatting-problem.hh"
30 #include "semi-tie-column.hh"
34 Tie::less (Grob *const &s1,
37 return Tie::get_position (s1) < Tie::get_position (s2);
41 Tie::set_head (Grob *me, Direction d, Grob *h)
43 dynamic_cast<Spanner *> (me)->set_bound (d, h);
47 Tie::head (Grob *me, Direction d)
49 if (is_direction (me->get_property ("head-direction")))
51 Direction hd = to_dir (me->get_property ("head-direction"));
54 ? unsmob_grob (me->get_object ("note-head"))
58 Item *it = dynamic_cast<Spanner*> (me)->get_bound (d);
59 if (Note_head::has_interface (it))
66 Tie::get_column_rank (Grob *me, Direction d)
68 Spanner *span = dynamic_cast<Spanner *> (me);
69 Grob *h = head (me, d);
71 h = span->get_bound (d);
73 Grob *col = dynamic_cast<Item *> (h)->get_column ();
74 return Paper_column::get_rank (col);
78 Tie::get_position (Grob *me)
83 Grob *h = head (me, d);
85 return (int) rint (Staff_symbol_referencer::get_position (h));
87 while (flip (&d) != LEFT);
91 TODO: this is theoretically possible for ties across more than 2
92 systems.. We should look at the first broken copy.
95 programming_error ("Tie without heads. Suicide");
101 Default: Put the tie oppositie of the stem [Wanske p231]
103 In case of chords: Tie_column takes over
105 The direction of the Tie is more complicated (See [Ross] p136 and
108 (what about linebreaks? )
111 Tie::get_default_dir (Grob *me)
113 Drul_array<Grob*> stems;
117 Grob *one_head = head (me, d);
118 if (!one_head && dynamic_cast<Spanner*> (me))
119 one_head = Tie::head (dynamic_cast<Spanner*> (me)->broken_neighbor (d), d);
121 Grob *stem = one_head ? Rhythmic_head::get_stem (one_head) : 0;
123 stem = Stem::is_invisible (stem) ? 0 : stem;
127 while (flip (&d)!= LEFT);
129 if (stems[LEFT] && stems[RIGHT])
131 if (get_grob_direction (stems[LEFT]) == UP
132 && get_grob_direction (stems[RIGHT]) == UP)
135 else if (stems[LEFT] || stems[RIGHT])
137 Grob *s = stems[LEFT] ? stems[LEFT] : stems[RIGHT];
138 return -get_grob_direction (s);
140 else if (int p = get_position (me))
141 return Direction (sign (p));
143 return to_dir (me->get_property("neutral-direction"));
147 MAKE_SCHEME_CALLBACK (Tie, calc_direction, 1);
149 Tie::calc_direction (SCM smob)
151 Grob *me = unsmob_grob (smob);
152 Grob *yparent = me->get_parent (Y_AXIS);
153 if ((Tie_column::has_interface (yparent)
154 || Semi_tie_column::has_interface (yparent))
155 && unsmob_grob_array (yparent->get_object ("ties"))
156 // && unsmob_grob_array (yparent->get_object ("ties"))->size () > 1
159 /* trigger positioning. */
160 (void) yparent->get_property ("positioning-done");
162 return me->get_property_data ("direction");
165 return scm_from_int (Tie::get_default_dir (me));
170 Tie::get_default_control_points (Grob *me_grob)
172 Spanner *me = dynamic_cast<Spanner*> (me_grob);
174 common = me->get_bound (LEFT)->common_refpoint (common, X_AXIS);
175 common = me->get_bound (RIGHT)->common_refpoint (common, X_AXIS);
177 Tie_formatting_problem problem;
178 problem.from_tie (me);
180 Tie_specification spec = problem.get_tie_specification (0);
185 Ties_configuration conf
186 = problem.generate_optimal_configuration ();
188 return get_control_points (me, problem.common_x_refpoint (),
189 conf[0], problem.details_);
193 Tie::get_control_points (Grob *me,
195 Tie_configuration const &conf,
196 Tie_details const &details
199 Bezier b = conf.get_transformed_bezier (details);
200 b.translate (Offset (- me->relative_coordinate (common, X_AXIS), 0));
202 SCM controls = SCM_EOL;
203 for (int i = 4; i--;)
205 if (!b.control_[i].is_sane ())
206 programming_error ("Insane offset");
207 controls = scm_cons (ly_offset2scm (b.control_[i]), controls);
213 MAKE_SCHEME_CALLBACK (Tie, calc_control_points, 1);
215 Tie::calc_control_points (SCM smob)
217 Grob *me = unsmob_grob (smob);
219 Grob *yparent = me->get_parent (Y_AXIS);
220 if ((Tie_column::has_interface (yparent)
221 || Semi_tie_column::has_interface (yparent))
222 && unsmob_grob_array (yparent->get_object ("ties"))
223 // && unsmob_grob_array (yparent->get_object ("ties"))->size () > 1
226 extract_grob_set (yparent, "ties", ties);
228 && !to_dir (me->get_property_data ("direction")))
230 assert (ties[0] == me);
231 set_grob_direction (me, Tie::get_default_dir (me));
234 /* trigger positioning. */
235 (void) yparent->get_property ("positioning-done");
238 SCM cp = me->get_property_data ("control-points");
239 if (!scm_is_pair (cp))
241 cp = get_default_control_points (me);
248 TODO: merge with Slur::print.
250 MAKE_SCHEME_CALLBACK (Tie, print, 1);
252 Tie::print (SCM smob)
254 Grob *me = unsmob_grob (smob);
256 SCM cp = me->get_property ("control-points");
258 Real staff_thick = Staff_symbol_referencer::line_thickness (me);
259 Real base_thick = staff_thick * robust_scm2double (me->get_property ("thickness"), 1);
260 Real line_thick = staff_thick * robust_scm2double (me->get_property ("line-thickness"), 1);
264 for (SCM s = cp; scm_is_pair (s); s = scm_cdr (s))
266 b.control_[i] = ly_scm2offset (scm_car (s));
272 SCM p = me->get_property ("dash-period");
273 SCM f = me->get_property ("dash-fraction");
274 if (scm_is_number (p) && scm_is_number (f))
275 a = Lookup::dashed_slur (b,
277 robust_scm2double (p, 1.0),
278 robust_scm2double (f, 0));
281 get_grob_direction (me) * base_thick,
284 #if DEBUG_TIE_SCORING
285 SCM annotation = me->get_property ("annotation");
286 if (!scm_is_string (annotation))
288 SCM debug = me->layout ()->lookup_variable (ly_symbol2scm ("debug-tie-scoring"));
289 if (to_boolean (debug))
290 annotation = me->get_property ("quant-score");
292 if (scm_is_string (annotation))
295 SCM properties = Font_interface::text_font_alist_chain (me);
297 Stencil tm = *unsmob_stencil (Text_interface::interpret_markup
298 (me->layout ()->self_scm (), properties,
300 tm.translate (Offset (b.control_[3][X_AXIS] + 0.5,
301 b.control_[0][Y_AXIS] * 2));
302 tm = tm.in_color (1, 0, 0);
305 It would be nice if we could put this in a different layer,
306 but alas, this must be done with a Tie override.
312 return a.smobbed_copy ();
316 "A horizontal curve connecting two noteheads.",
320 "avoid-slur " // UGH.