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 ();
88 progress_indication ( _f("Element count %d.", count + element_count()));
91 for (int i=0; i < broken_into_l_arr_.size (); i++)
93 Line_of_score *line_l = dynamic_cast<Line_of_score*> (broken_into_l_arr_[i]);
96 progress_indication ("[");
97 line_l->post_processing ();
101 progress_indication (to_str (i));
102 progress_indication ("]");
105 if (i < broken_into_l_arr_.size () - 1)
107 SCM lastcol = gh_car (line_l->get_elt_pointer ("columns"));
108 Score_element* e = unsmob_element (lastcol);
109 SCM inter = e->get_elt_property ("between-system-string");
110 if (gh_string_p (inter))
112 pscore_l_->outputter_l_->output_string (inter);
120 Line_of_score::break_into_pieces (Array<Column_x_positions> const &breaking)
122 for (int i=0; i < breaking.size (); i++)
124 Line_of_score *line_l = dynamic_cast <Line_of_score*> (clone());
126 Link_array<Paper_column> c (breaking[i].cols_);
127 pscore_l_->typeset_line (line_l);
129 line_l->set_bound(LEFT,c[0]);
130 line_l->set_bound(RIGHT,c.top ());
131 for (int j=0; j < c.size(); j++)
133 c[j]->translate_axis (breaking[i].config_[j],X_AXIS);
134 c[j]->line_l_ = line_l;
137 broken_into_l_arr_.push (line_l);
143 Line_of_score::output_molecule (SCM expr, Offset o)
145 SCM offset_sym = ly_symbol2scm ("translate-molecule");
146 SCM combine_sym = ly_symbol2scm ("combine-molecule");
149 if (!gh_pair_p (expr))
152 SCM head =gh_car (expr);
153 if (head == offset_sym)
155 o += ly_scm2offset (gh_cadr (expr));
156 expr = gh_caddr (expr);
159 else if (head == combine_sym)
161 output_molecule (gh_cadr (expr), o);
162 expr = gh_caddr (expr);
163 goto enter; // tail recursion
167 pscore_l_->outputter_l_->
168 output_scheme (gh_list (ly_symbol2scm ("placebox"),
169 gh_double2scm (o[X_AXIS]),
170 gh_double2scm (o[Y_AXIS]),
177 Line_of_score::output_scheme (SCM s)
179 pscore_l_->outputter_l_->output_scheme (s);
183 Line_of_score::add_column (Paper_column*p)
185 SCM cs = get_elt_pointer ("columns");
186 Score_element * prev = gh_pair_p (cs) ? unsmob_element (gh_car (cs)) : 0;
187 int rank = prev ? dynamic_cast<Paper_column*> (prev)->rank_i () + 1 : 0;
190 set_elt_pointer ("columns", gh_cons (p->self_scm_, cs));
192 Axis_group_interface (this).add_element (p);
197 fixup_refpoints (SCM s)
199 for (; gh_pair_p (s); s = gh_cdr (s))
201 Score_element * se = unsmob_element (gh_car (s));
204 se->fixup_refpoint ();
205 if (!dynamic_cast<Line_of_score*> (se) && !se->parent_l (Y_AXIS))
207 programming_error ("No parent!");
215 Line_of_score::pre_processing ()
217 for (SCM s = get_elt_pointer ("all-elements"); gh_pair_p (s); s = gh_cdr (s))
218 unsmob_element (gh_car (s))->discretionary_processing ();
221 progress_indication ( _f("Element count %d ", element_count ()));
224 for (SCM s = get_elt_pointer ("all-elements"); gh_pair_p (s); s = gh_cdr (s))
225 unsmob_element (gh_car (s))->handle_prebroken_dependencies ();
227 fixup_refpoints (get_elt_pointer ("all-elements"));
229 for (SCM s = get_elt_pointer ("all-elements"); gh_pair_p (s); s = gh_cdr (s))
231 Score_element* sc = unsmob_element (gh_car (s));
232 sc->calculate_dependencies (PRECALCED, PRECALCING, ly_symbol2scm ("before-line-breaking-callback"));
235 progress_indication ("\n" + _ ("Calculating column positions...") + " " );
236 for (SCM s = get_elt_pointer ("all-elements"); gh_pair_p (s); s = gh_cdr (s))
237 unsmob_element (gh_car (s))->do_space_processing ();
241 Line_of_score::post_processing ()
243 for (SCM s = get_elt_pointer ("all-elements");
244 gh_pair_p (s); s = gh_cdr (s))
246 Score_element* sc = unsmob_element (gh_car (s));
247 sc->calculate_dependencies (POSTCALCED, POSTCALCING,
248 ly_symbol2scm ("after-line-breaking-callback"));
251 Interval i(extent(Y_AXIS));
253 programming_error ("Huh? Empty Line_of_score?");
255 translate_axis (- i[MAX], Y_AXIS);
257 Real height = i.length ();
260 programming_error ("Improbable system height");
265 generate all molecules to trigger all font loads.
267 (ugh. This is not very memory efficient.) */
268 for (SCM s = get_elt_pointer ("all-elements"); gh_pair_p (s); s = gh_cdr (s))
269 unsmob_element (gh_car (s))->get_molecule ();
274 SCM font_names = ly_quote_scm (all_fonts_global_p->font_descriptions ());
275 output_scheme (gh_list (ly_symbol2scm ("define-fonts"),
282 output_scheme (gh_list (ly_symbol2scm ("start-line"),
283 gh_double2scm (height),
286 Real il = paper_l ()->get_var ("interline");
291 for (SCM s = get_elt_pointer ("all-elements"); gh_pair_p (s); s = gh_cdr (s))
293 Score_element * sc = unsmob_element (gh_car (s));
294 Molecule m = sc->get_molecule ();
296 Offset o (sc->relative_coordinate (this, X_AXIS),
297 sc->relative_coordinate (this, Y_AXIS));
299 SCM e = sc->get_elt_property ("extra-offset");
302 o[X_AXIS] += il * gh_scm2double (gh_car (e));
303 o[Y_AXIS] += il * gh_scm2double (gh_cdr (e));
306 output_molecule (m.get_expr (), o);
308 output_scheme (gh_list (ly_symbol2scm ("stop-line"), SCM_UNDEFINED));
313 Line_of_score::broken_col_range (Item const*l, Item const*r) const
315 Link_array<Item> ret;
319 SCM s = get_elt_pointer ("columns");
321 while (gh_pair_p (s) && gh_car (s) != r->self_scm_)
327 while (gh_pair_p (s) && gh_car (s) != l->self_scm_)
330 = dynamic_cast<Paper_column*> (unsmob_element (gh_car (s)));
331 if (c->breakable_b () && !c->line_l_)
342 Return all columns, but filter out any unused columns , since they might
343 disrupt the spacing problem.
345 Link_array<Paper_column>
346 Line_of_score::column_l_arr ()const
348 Link_array<Paper_column> acs
349 = Pointer_group_interface__extract_elements (this, (Paper_column*) 0, "columns");
351 for (int i= acs.size (); i -- ; )
353 bool brb = acs[i]->breakable_b();
354 bfound = bfound || brb;
357 the last column should be breakable. Weed out any columns that
358 seem empty. We need to retain breakable columns, in case
359 someone forced a breakpoint.
361 if (!bfound || !acs[i]->used_b ())