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()
25 set_elt_property ("columns", SCM_EOL);
26 set_elt_property ("all-elements", SCM_EOL);
28 Axis_group_interface (this).set_interface ();
29 Axis_group_interface (this).set_axes (Y_AXIS,X_AXIS);
33 Line_of_score::element_count () const
35 return scm_ilength ( get_elt_property ("all-elements"));
40 Ugh. this is grossly hairy.
43 Line_of_score::typeset_element (Score_element * elem_p)
45 elem_p->pscore_l_ = pscore_l_;
46 Group_interface (this, "all-elements").add_element (elem_p);
47 scm_unprotect_object (elem_p->self_scm_);
51 Line_of_score::output_lines ()
53 for (SCM s = get_elt_property ("all-elements");
54 gh_pair_p (s); s = gh_cdr (s))
56 unsmob_element (gh_car (s))->do_break_processing ();
59 fixups must be done in broken line_of_scores, because new elements
60 are put over there. */
62 for (int i=0; i < broken_into_l_arr_.size (); i++)
64 Score_element *se = broken_into_l_arr_[i];
65 SCM all = se->get_elt_property ("all-elements");
66 for (SCM s = all; gh_pair_p (s); s = gh_cdr (s))
68 unsmob_element (gh_car (s))->fixup_refpoint ();
70 count += scm_ilength (all);
75 needed for doing items.
77 for (SCM s = get_elt_property ("all-elements");
78 gh_pair_p (s); s = gh_cdr (s))
80 unsmob_element (gh_car (s))->fixup_refpoint ();
83 for (SCM s = get_elt_property ("all-elements");
84 gh_pair_p (s); s = gh_cdr (s))
86 unsmob_element (gh_car (s))->handle_broken_dependencies ();
88 handle_broken_dependencies ();
89 progress_indication ( _f("Element count %d.", count + element_count()));
92 for (int i=0; i < broken_into_l_arr_.size (); i++)
94 Line_of_score *line_l = dynamic_cast<Line_of_score*> (broken_into_l_arr_[i]);
96 progress_indication ("[");
97 line_l->post_processing ();
98 progress_indication (to_str (i));
99 progress_indication ("]");
105 Line_of_score::break_into_pieces (Array<Column_x_positions> const &breaking)
107 for (int i=0; i < breaking.size (); i++)
109 Line_of_score *line_l = dynamic_cast <Line_of_score*> (clone());
111 Link_array<Paper_column> c (breaking[i].cols_);
112 pscore_l_->typeset_line (line_l);
114 line_l->set_bound(LEFT,c[0]);
115 line_l->set_bound(RIGHT,c.top ());
116 for (int j=0; j < c.size(); j++)
118 c[j]->translate_axis (breaking[i].config_[j],X_AXIS);
119 c[j]->line_l_ = line_l;
122 broken_into_l_arr_.push (line_l);
128 Line_of_score::output_molecule (SCM expr, Offset o)
130 SCM offset_sym = ly_symbol2scm ("translate-molecule");
131 SCM combine_sym = ly_symbol2scm ("combine-molecule");
134 if (!gh_pair_p (expr))
137 SCM head =gh_car (expr);
138 if (head == offset_sym)
140 o += ly_scm2offset (gh_cadr (expr));
141 expr = gh_caddr (expr);
144 else if (head == combine_sym)
146 output_molecule (gh_cadr (expr), o);
147 expr = gh_caddr (expr);
148 goto enter; // tail recursion
152 pscore_l_->outputter_l_->
153 output_scheme (gh_list (ly_symbol2scm ("placebox"),
154 gh_double2scm (o[X_AXIS]),
155 gh_double2scm (o[Y_AXIS]),
162 Line_of_score::output_scheme (SCM s)
164 pscore_l_->outputter_l_->output_scheme (s);
168 Line_of_score::add_column (Paper_column*p)
170 SCM cs = get_elt_property ("columns");
171 Score_element * prev = gh_pair_p (cs) ? unsmob_element (gh_car (cs)) : 0;
172 int rank = prev ? dynamic_cast<Paper_column*> (prev)->rank_i () + 1 : 0;
175 set_elt_property ("columns", gh_cons (p->self_scm_, cs));
177 Axis_group_interface (this).add_element (p);
181 Link_array<Paper_column>
182 Line_of_score::column_l_arr ()const
184 Link_array<Paper_column> acs
185 = Group_interface__extract_elements (this, (Paper_column*) 0, "columns");
187 for (int i= acs.size (); i -- ; )
189 bool brb = acs[i]->breakable_b();
190 bfound = bfound || brb;
193 the last column should be breakable. Weed out any columns that
194 seem empty. We need to retain breakable columns, in case
195 someone forced a breakpoint.
198 || (acs[i]->get_elt_property ("elements") == SCM_EOL
206 fixup_refpoints (SCM s)
208 for (; gh_pair_p (s); s = gh_cdr (s))
210 Score_element * se = unsmob_element (gh_car (s));
213 se->fixup_refpoint ();
214 if (!dynamic_cast<Line_of_score*> (se) && !se->parent_l (Y_AXIS))
216 programming_error ("No parent!");
224 Line_of_score::pre_processing ()
226 for (SCM s = get_elt_property ("all-elements"); gh_pair_p (s); s = gh_cdr (s))
227 unsmob_element (gh_car (s))->discretionary_processing ();
229 progress_indication ( _f("Element count %d ", element_count ()));
232 for (SCM s = get_elt_property ("all-elements"); gh_pair_p (s); s = gh_cdr (s))
233 unsmob_element (gh_car (s))->handle_prebroken_dependencies ();
235 fixup_refpoints (get_elt_property ("all-elements"));
237 for (SCM s = get_elt_property ("all-elements"); gh_pair_p (s); s = gh_cdr (s))
239 Score_element* sc = unsmob_element (gh_car (s));
240 sc->calculate_dependencies (PRECALCED, PRECALCING, &Score_element::before_line_breaking);
243 progress_indication ("\n" + _ ("Calculating column positions...") + " " );
244 for (SCM s = get_elt_property ("all-elements"); gh_pair_p (s); s = gh_cdr (s))
245 unsmob_element (gh_car (s))->do_space_processing ();
249 Line_of_score::post_processing ()
251 for (SCM s = get_elt_property ("all-elements");
252 gh_pair_p (s); s = gh_cdr (s))
254 Score_element* sc = unsmob_element (gh_car (s));
255 sc->calculate_dependencies (POSTCALCED, POSTCALCING, &Score_element::after_line_breaking);
258 Interval i(extent(Y_AXIS));
260 programming_error ("Huh? Empty Line_of_score?");
262 translate_axis (- i[MAX], Y_AXIS);
264 Real height = i.length ();
267 programming_error ("Improbable system height");
272 generate all molecules to trigger all font loads.
274 (ugh. This is not very memory efficient.) */
275 for (SCM s = get_elt_property ("all-elements"); gh_pair_p (s); s = gh_cdr (s))
276 unsmob_element (gh_car (s))->get_molecule ();
281 SCM font_names = ly_quote_scm (all_fonts_global_p->font_descriptions ());
282 output_scheme (gh_list (ly_symbol2scm ("define-fonts"),
289 output_scheme (gh_list (ly_symbol2scm ("start-line"),
290 gh_double2scm (height),
293 Real il = paper_l ()->get_var ("interline");
298 for (SCM s = get_elt_property ("all-elements"); gh_pair_p (s); s = gh_cdr (s))
300 Score_element * sc = unsmob_element (gh_car (s));
301 Molecule m = sc->get_molecule ();
303 Offset o (sc->relative_coordinate (this, X_AXIS),
304 sc->relative_coordinate (this, Y_AXIS));
306 SCM e = sc->get_elt_property ("extra-offset");
309 o[X_AXIS] += il * gh_scm2double (gh_car (e));
310 o[Y_AXIS] += il * gh_scm2double (gh_cdr (e));
313 output_molecule (m.get_expr (), o);
315 output_scheme (gh_list (ly_symbol2scm ("stop-line"), SCM_UNDEFINED));
320 Line_of_score::broken_col_range (Item const*l, Item const*r) const
322 Link_array<Item> ret;
326 SCM s = get_elt_property ("columns");
328 while (gh_car (s) != r->self_scm_)
334 while (gh_car (s) != l->self_scm_)
337 = dynamic_cast<Paper_column*> (unsmob_element (gh_car (s)));
338 if (c->breakable_b () && !c->line_l_)