2 scoreline.cc -- implement Line_of_score
4 source file of the GNU LilyPond music typesetter
6 (c) 1996--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
9 #include "axis-group-interface.hh"
11 #include "line-of-score.hh"
13 #include "paper-column.hh"
14 #include "paper-def.hh"
15 #include "paper-outputter.hh"
16 #include "paper-score.hh"
19 #include "dimensions.hh"
20 #include "molecule.hh"
21 #include "all-font-metrics.hh"
23 Line_of_score::Line_of_score()
26 set_elt_pointer ("columns", SCM_EOL);
27 set_elt_pointer ("all-elements", SCM_EOL);
29 Axis_group_interface (this).set_interface ();
30 Axis_group_interface (this).set_axes (Y_AXIS,X_AXIS);
34 Line_of_score::element_count () const
36 return scm_ilength ( get_elt_pointer ("all-elements"));
40 Line_of_score::typeset_element (Score_element * elem_p)
42 elem_p->pscore_l_ = pscore_l_;
43 Pointer_group_interface (this, "all-elements").add_element (elem_p);
44 scm_unprotect_object (elem_p->self_scm_);
48 Line_of_score::output_lines ()
50 for (SCM s = get_elt_pointer ("all-elements");
51 gh_pair_p (s); s = gh_cdr (s))
53 unsmob_element (gh_car (s))->do_break_processing ();
56 fixups must be done in broken line_of_scores, because new elements
57 are put over there. */
59 for (int i=0; i < broken_into_l_arr_.size (); i++)
61 Score_element *se = broken_into_l_arr_[i];
62 SCM all = se->get_elt_pointer ("all-elements");
63 for (SCM s = all; gh_pair_p (s); s = gh_cdr (s))
65 unsmob_element (gh_car (s))->fixup_refpoint ();
67 count += scm_ilength (all);
72 needed for doing items.
74 for (SCM s = get_elt_pointer ("all-elements");
75 gh_pair_p (s); s = gh_cdr (s))
77 unsmob_element (gh_car (s))->fixup_refpoint ();
80 for (SCM s = get_elt_pointer ("all-elements");
81 gh_pair_p (s); s = gh_cdr (s))
83 unsmob_element (gh_car (s))->handle_broken_dependencies ();
85 handle_broken_dependencies ();
86 progress_indication ( _f("Element count %d.", count + element_count()));
89 for (int i=0; i < broken_into_l_arr_.size (); i++)
91 Line_of_score *line_l = dynamic_cast<Line_of_score*> (broken_into_l_arr_[i]);
93 progress_indication ("[");
94 line_l->post_processing ();
95 progress_indication (to_str (i));
96 progress_indication ("]");
102 Line_of_score::break_into_pieces (Array<Column_x_positions> const &breaking)
104 for (int i=0; i < breaking.size (); i++)
106 Line_of_score *line_l = dynamic_cast <Line_of_score*> (clone());
108 Link_array<Paper_column> c (breaking[i].cols_);
109 pscore_l_->typeset_line (line_l);
111 line_l->set_bound(LEFT,c[0]);
112 line_l->set_bound(RIGHT,c.top ());
113 for (int j=0; j < c.size(); j++)
115 c[j]->translate_axis (breaking[i].config_[j],X_AXIS);
116 c[j]->line_l_ = line_l;
119 broken_into_l_arr_.push (line_l);
125 Line_of_score::output_molecule (SCM expr, Offset o)
127 SCM offset_sym = ly_symbol2scm ("translate-molecule");
128 SCM combine_sym = ly_symbol2scm ("combine-molecule");
131 if (!gh_pair_p (expr))
134 SCM head =gh_car (expr);
135 if (head == offset_sym)
137 o += ly_scm2offset (gh_cadr (expr));
138 expr = gh_caddr (expr);
141 else if (head == combine_sym)
143 output_molecule (gh_cadr (expr), o);
144 expr = gh_caddr (expr);
145 goto enter; // tail recursion
149 pscore_l_->outputter_l_->
150 output_scheme (gh_list (ly_symbol2scm ("placebox"),
151 gh_double2scm (o[X_AXIS]),
152 gh_double2scm (o[Y_AXIS]),
159 Line_of_score::output_scheme (SCM s)
161 pscore_l_->outputter_l_->output_scheme (s);
165 Line_of_score::add_column (Paper_column*p)
167 SCM cs = get_elt_pointer ("columns");
168 Score_element * prev = gh_pair_p (cs) ? unsmob_element (gh_car (cs)) : 0;
169 int rank = prev ? dynamic_cast<Paper_column*> (prev)->rank_i () + 1 : 0;
172 set_elt_pointer ("columns", gh_cons (p->self_scm_, cs));
174 Axis_group_interface (this).add_element (p);
180 fixup_refpoints (SCM s)
182 for (; gh_pair_p (s); s = gh_cdr (s))
184 Score_element * se = unsmob_element (gh_car (s));
187 se->fixup_refpoint ();
188 if (!dynamic_cast<Line_of_score*> (se) && !se->parent_l (Y_AXIS))
190 programming_error ("No parent!");
198 Line_of_score::pre_processing ()
200 for (SCM s = get_elt_pointer ("all-elements"); gh_pair_p (s); s = gh_cdr (s))
201 unsmob_element (gh_car (s))->discretionary_processing ();
203 progress_indication ( _f("Element count %d ", element_count ()));
206 for (SCM s = get_elt_pointer ("all-elements"); gh_pair_p (s); s = gh_cdr (s))
207 unsmob_element (gh_car (s))->handle_prebroken_dependencies ();
209 fixup_refpoints (get_elt_pointer ("all-elements"));
211 for (SCM s = get_elt_pointer ("all-elements"); gh_pair_p (s); s = gh_cdr (s))
213 Score_element* sc = unsmob_element (gh_car (s));
214 sc->calculate_dependencies (PRECALCED, PRECALCING, &Score_element::before_line_breaking);
217 progress_indication ("\n" + _ ("Calculating column positions...") + " " );
218 for (SCM s = get_elt_pointer ("all-elements"); gh_pair_p (s); s = gh_cdr (s))
219 unsmob_element (gh_car (s))->do_space_processing ();
223 Line_of_score::post_processing ()
225 for (SCM s = get_elt_pointer ("all-elements");
226 gh_pair_p (s); s = gh_cdr (s))
228 Score_element* sc = unsmob_element (gh_car (s));
229 sc->calculate_dependencies (POSTCALCED, POSTCALCING, &Score_element::after_line_breaking);
232 Interval i(extent(Y_AXIS));
234 programming_error ("Huh? Empty Line_of_score?");
236 translate_axis (- i[MAX], Y_AXIS);
238 Real height = i.length ();
241 programming_error ("Improbable system height");
246 generate all molecules to trigger all font loads.
248 (ugh. This is not very memory efficient.) */
249 for (SCM s = get_elt_pointer ("all-elements"); gh_pair_p (s); s = gh_cdr (s))
250 unsmob_element (gh_car (s))->get_molecule ();
255 SCM font_names = ly_quote_scm (all_fonts_global_p->font_descriptions ());
256 output_scheme (gh_list (ly_symbol2scm ("define-fonts"),
263 output_scheme (gh_list (ly_symbol2scm ("start-line"),
264 gh_double2scm (height),
267 Real il = paper_l ()->get_var ("interline");
272 for (SCM s = get_elt_pointer ("all-elements"); gh_pair_p (s); s = gh_cdr (s))
274 Score_element * sc = unsmob_element (gh_car (s));
275 Molecule m = sc->get_molecule ();
277 Offset o (sc->relative_coordinate (this, X_AXIS),
278 sc->relative_coordinate (this, Y_AXIS));
280 SCM e = sc->get_elt_property ("extra-offset");
283 o[X_AXIS] += il * gh_scm2double (gh_car (e));
284 o[Y_AXIS] += il * gh_scm2double (gh_cdr (e));
287 output_molecule (m.get_expr (), o);
289 output_scheme (gh_list (ly_symbol2scm ("stop-line"), SCM_UNDEFINED));
294 Line_of_score::broken_col_range (Item const*l, Item const*r) const
296 Link_array<Item> ret;
300 SCM s = get_elt_pointer ("columns");
302 while (gh_pair_p (s) && gh_car (s) != r->self_scm_)
308 while (gh_pair_p (s) && gh_car (s) != l->self_scm_)
311 = dynamic_cast<Paper_column*> (unsmob_element (gh_car (s)));
312 if (c->breakable_b () && !c->line_l_)
323 Return all columns, but filter out any unused columns , since they might
324 disrupt the spacing problem.
326 Link_array<Paper_column>
327 Line_of_score::column_l_arr ()const
329 Link_array<Paper_column> acs
330 = Pointer_group_interface__extract_elements (this, (Paper_column*) 0, "columns");
332 for (int i= acs.size (); i -- ; )
334 bool brb = acs[i]->breakable_b();
335 bfound = bfound || brb;
338 the last column should be breakable. Weed out any columns that
339 seem empty. We need to retain breakable columns, in case
340 someone forced a breakpoint.
342 if (!bfound || !acs[i]->used_b ())