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"));
41 Ugh. this is grossly hairy.
44 Line_of_score::typeset_element (Score_element * elem_p)
46 elem_p->pscore_l_ = pscore_l_;
47 Pointer_group_interface (this, "all-elements").add_element (elem_p);
48 scm_unprotect_object (elem_p->self_scm_);
52 Line_of_score::output_lines ()
54 for (SCM s = get_elt_pointer ("all-elements");
55 gh_pair_p (s); s = gh_cdr (s))
57 unsmob_element (gh_car (s))->do_break_processing ();
60 fixups must be done in broken line_of_scores, because new elements
61 are put over there. */
63 for (int i=0; i < broken_into_l_arr_.size (); i++)
65 Score_element *se = broken_into_l_arr_[i];
66 SCM all = se->get_elt_pointer ("all-elements");
67 for (SCM s = all; gh_pair_p (s); s = gh_cdr (s))
69 unsmob_element (gh_car (s))->fixup_refpoint ();
71 count += scm_ilength (all);
76 needed for doing items.
78 for (SCM s = get_elt_pointer ("all-elements");
79 gh_pair_p (s); s = gh_cdr (s))
81 unsmob_element (gh_car (s))->fixup_refpoint ();
84 for (SCM s = get_elt_pointer ("all-elements");
85 gh_pair_p (s); s = gh_cdr (s))
87 unsmob_element (gh_car (s))->handle_broken_dependencies ();
89 handle_broken_dependencies ();
90 progress_indication ( _f("Element count %d.", count + element_count()));
93 for (int i=0; i < broken_into_l_arr_.size (); i++)
95 Line_of_score *line_l = dynamic_cast<Line_of_score*> (broken_into_l_arr_[i]);
97 progress_indication ("[");
98 line_l->post_processing ();
99 progress_indication (to_str (i));
100 progress_indication ("]");
106 Line_of_score::break_into_pieces (Array<Column_x_positions> const &breaking)
108 for (int i=0; i < breaking.size (); i++)
110 Line_of_score *line_l = dynamic_cast <Line_of_score*> (clone());
112 Link_array<Paper_column> c (breaking[i].cols_);
113 pscore_l_->typeset_line (line_l);
115 line_l->set_bound(LEFT,c[0]);
116 line_l->set_bound(RIGHT,c.top ());
117 for (int j=0; j < c.size(); j++)
119 c[j]->translate_axis (breaking[i].config_[j],X_AXIS);
120 c[j]->line_l_ = line_l;
123 broken_into_l_arr_.push (line_l);
129 Line_of_score::output_molecule (SCM expr, Offset o)
131 SCM offset_sym = ly_symbol2scm ("translate-molecule");
132 SCM combine_sym = ly_symbol2scm ("combine-molecule");
135 if (!gh_pair_p (expr))
138 SCM head =gh_car (expr);
139 if (head == offset_sym)
141 o += ly_scm2offset (gh_cadr (expr));
142 expr = gh_caddr (expr);
145 else if (head == combine_sym)
147 output_molecule (gh_cadr (expr), o);
148 expr = gh_caddr (expr);
149 goto enter; // tail recursion
153 pscore_l_->outputter_l_->
154 output_scheme (gh_list (ly_symbol2scm ("placebox"),
155 gh_double2scm (o[X_AXIS]),
156 gh_double2scm (o[Y_AXIS]),
163 Line_of_score::output_scheme (SCM s)
165 pscore_l_->outputter_l_->output_scheme (s);
169 Line_of_score::add_column (Paper_column*p)
171 SCM cs = get_elt_pointer ("columns");
172 Score_element * prev = gh_pair_p (cs) ? unsmob_element (gh_car (cs)) : 0;
173 int rank = prev ? dynamic_cast<Paper_column*> (prev)->rank_i () + 1 : 0;
176 set_elt_pointer ("columns", gh_cons (p->self_scm_, cs));
178 Axis_group_interface (this).add_element (p);
184 fixup_refpoints (SCM s)
186 for (; gh_pair_p (s); s = gh_cdr (s))
188 Score_element * se = unsmob_element (gh_car (s));
191 se->fixup_refpoint ();
192 if (!dynamic_cast<Line_of_score*> (se) && !se->parent_l (Y_AXIS))
194 programming_error ("No parent!");
202 Line_of_score::pre_processing ()
204 for (SCM s = get_elt_pointer ("all-elements"); gh_pair_p (s); s = gh_cdr (s))
205 unsmob_element (gh_car (s))->discretionary_processing ();
207 progress_indication ( _f("Element count %d ", element_count ()));
210 for (SCM s = get_elt_pointer ("all-elements"); gh_pair_p (s); s = gh_cdr (s))
211 unsmob_element (gh_car (s))->handle_prebroken_dependencies ();
213 fixup_refpoints (get_elt_pointer ("all-elements"));
215 for (SCM s = get_elt_pointer ("all-elements"); gh_pair_p (s); s = gh_cdr (s))
217 Score_element* sc = unsmob_element (gh_car (s));
218 sc->calculate_dependencies (PRECALCED, PRECALCING, &Score_element::before_line_breaking);
221 progress_indication ("\n" + _ ("Calculating column positions...") + " " );
222 for (SCM s = get_elt_pointer ("all-elements"); gh_pair_p (s); s = gh_cdr (s))
223 unsmob_element (gh_car (s))->do_space_processing ();
227 Line_of_score::post_processing ()
229 for (SCM s = get_elt_pointer ("all-elements");
230 gh_pair_p (s); s = gh_cdr (s))
232 Score_element* sc = unsmob_element (gh_car (s));
233 sc->calculate_dependencies (POSTCALCED, POSTCALCING, &Score_element::after_line_breaking);
236 Interval i(extent(Y_AXIS));
238 programming_error ("Huh? Empty Line_of_score?");
240 translate_axis (- i[MAX], Y_AXIS);
242 Real height = i.length ();
245 programming_error ("Improbable system height");
250 generate all molecules to trigger all font loads.
252 (ugh. This is not very memory efficient.) */
253 for (SCM s = get_elt_pointer ("all-elements"); gh_pair_p (s); s = gh_cdr (s))
254 unsmob_element (gh_car (s))->get_molecule ();
259 SCM font_names = ly_quote_scm (all_fonts_global_p->font_descriptions ());
260 output_scheme (gh_list (ly_symbol2scm ("define-fonts"),
267 output_scheme (gh_list (ly_symbol2scm ("start-line"),
268 gh_double2scm (height),
271 Real il = paper_l ()->get_var ("interline");
276 for (SCM s = get_elt_pointer ("all-elements"); gh_pair_p (s); s = gh_cdr (s))
278 Score_element * sc = unsmob_element (gh_car (s));
279 Molecule m = sc->get_molecule ();
281 Offset o (sc->relative_coordinate (this, X_AXIS),
282 sc->relative_coordinate (this, Y_AXIS));
284 SCM e = sc->get_elt_property ("extra-offset");
287 o[X_AXIS] += il * gh_scm2double (gh_car (e));
288 o[Y_AXIS] += il * gh_scm2double (gh_cdr (e));
291 output_molecule (m.get_expr (), o);
293 output_scheme (gh_list (ly_symbol2scm ("stop-line"), SCM_UNDEFINED));
298 Line_of_score::broken_col_range (Item const*l, Item const*r) const
300 Link_array<Item> ret;
304 SCM s = get_elt_pointer ("columns");
306 while (gh_pair_p (s) && gh_car (s) != r->self_scm_)
312 while (gh_pair_p (s) && gh_car (s) != l->self_scm_)
315 = dynamic_cast<Paper_column*> (unsmob_element (gh_car (s)));
316 if (c->breakable_b () && !c->line_l_)
327 Return all columns, but filter out any unused columns , since they might
328 disrupt the spacing problem.
330 Link_array<Paper_column>
331 Line_of_score::column_l_arr ()const
333 Link_array<Paper_column> acs
334 = Pointer_group_interface__extract_elements (this, (Paper_column*) 0, "columns");
336 for (int i= acs.size (); i -- ; )
338 bool brb = acs[i]->breakable_b();
339 bfound = bfound || brb;
342 the last column should be breakable. Weed out any columns that
343 seem empty. We need to retain breakable columns, in case
344 someone forced a breakpoint.
346 if (!bfound || !acs[i]->used_b ())