2 score-engraver.cc -- implement Score_engraver
4 source file of the GNU LilyPond music typesetter
6 (c) 1997--2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
9 #include "all-font-metrics.hh"
14 #include "score-engraver.hh"
15 #include "paper-score.hh"
16 #include "paper-column.hh"
17 #include "output-def.hh"
18 #include "axis-group-interface.hh"
19 #include "context-def.hh"
20 #include "staff-spacing.hh"
21 #include "note-spacing.hh"
22 #include "global-context.hh"
23 #include "open-type-font.hh"
26 TODO: the column creation logic is rather hairy. Revise it.
28 Score_engraver::Score_engraver ()
38 Score_engraver::make_columns ()
46 = updated_grob_properties (context (),
47 ly_symbol2scm ("NonMusicalPaperColumn"));
49 Object_key const *key1 = context()->get_grob_key ("NonMusicalPaperColumn");
51 SCM pc = updated_grob_properties (context (),
52 ly_symbol2scm ("PaperColumn"));
53 Object_key const *key2 = context()->get_grob_key ("PaperColumn");
54 set_columns (new Paper_column (nmp, key1), new Paper_column (pc, key2));
58 i1.grob_ = command_column_;
59 i1.origin_trans_ = this;
64 i2.grob_ = musical_column_;
65 i2.origin_trans_ = this;
72 Score_engraver::prepare (Moment m)
75 TODO: don't make columns when skipTypesetting is true.
79 SCM w = m.smobbed_copy ();
80 command_column_->set_property ("when", w);
81 musical_column_->set_property ("when", w);
83 recurse_over_translators (context (), &Translator::start_translation_timestep, DOWN);
87 Score_engraver::finish ()
90 progress_indication ("[" + to_string (breaks_) + "]");
92 recurse_over_translators (context (), &Translator::finalize, UP);
95 #define MUSIC_FONT "bigcheese20"
101 Score_engraver::initialize ()
103 Font_metric *fm = all_fonts_global->find_otf (MUSIC_FONT);
105 error (_f ("cannot find `%s'", MUSIC_FONT ".otf")
107 + _ ("Music font has not been installed properly.")
110 if (!scm_is_string (ly_kpathsea_find_file (scm_makfrom0str ("ecrm10.pfa")))
111 && (!scm_is_string (ly_kpathsea_find_file (scm_makfrom0str ("lmr10.pfb")))))
112 error (_f ("cannot find `%s'", "ecrm10.pfa")
114 + _f ("cannot find `%s'", "lmr10.pfb")
116 + _f ("Install the ec-fonts-mftraced package from: %s.",
117 "http://lilypond.org/download/fonts/")
121 pscore_ = new Paper_score;
122 pscore_->layout_ = dynamic_cast<Output_def*> (get_output_def ());
124 SCM props = updated_grob_properties (context (), ly_symbol2scm ("System"));
126 Object_key const *sys_key = context()->get_grob_key ("System");
127 pscore_->typeset_line (new System (props, sys_key));
130 system_ = pscore_->system_;
131 system_->set_bound (LEFT, command_column_);
132 command_column_->set_property ("breakable", SCM_BOOL_T);
134 Engraver_group_engraver::initialize ();
139 Score_engraver::finalize ()
141 Score_translator::finalize ();
144 = unsmob_grob (get_property ("currentCommandColumn"));
145 system_->set_bound (RIGHT, cc);
146 cc->set_property ("breakable", SCM_BOOL_T);
153 Score_engraver::one_time_step ()
155 if (!to_boolean (get_property ("skipTypesetting")))
157 recurse_over_translators (context (), &Engraver::process_music, UP);
158 Engraver_group_engraver::do_announces();
161 recurse_over_translators (context (), &Translator::stop_translation_timestep, UP);
165 Score_engraver::announce_grob (Grob_info info)
167 announce_infos_.push (info);
168 pscore_->system_->typeset_grob (info.grob_);
169 elems_.push (info.grob_);
174 Score_engraver::typeset_all ()
176 for (int i = 0; i < elems_.size (); i++)
178 Grob * elem = elems_[i];
181 if (dynamic_cast<Item*> (elem))
184 (!elem->get_parent (X_AXIS)
185 || !unsmob_grob (elem->get_property ("axis-group-parent-X")))
186 && elem != command_column_
187 && elem != musical_column_
190 bool br = to_boolean (elem->get_property ("breakable"));
191 Axis_group_interface::add_element (br ? command_column_ : musical_column_, elem);
195 if (!elem->get_parent (Y_AXIS))
196 Axis_group_interface::add_element (system_, elem);
202 Score_engraver::stop_translation_timestep ()
204 // this generates all items.
205 Engraver_group_engraver::stop_translation_timestep ();
208 if (to_boolean (command_column_->get_property ("breakable")))
212 progress_indication ("[" + to_string (breaks_) + "]");
216 system_->add_column (command_column_);
217 system_->add_column (musical_column_);
224 Score_engraver::set_columns (Paper_column *new_command,
225 Paper_column *new_musical)
227 assert (!command_column_ && !musical_column_);
229 command_column_ = new_command;
230 musical_column_ = new_musical;
233 context ()->set_property ("currentCommandColumn", new_command->self_scm ());
238 context ()->set_property ("currentMusicalColumn", new_musical->self_scm ());
243 Score_engraver::get_output ()
245 Music_output *o = pscore_;
246 ///FIXME WTF? pscore_ = 0;
251 Score_engraver::try_music (Music *m)
253 if (Engraver_group_engraver::try_music (m))
256 if (m->is_mus_type ("break-event"))
258 SCM pen = command_column_->get_property ("penalty");
259 Real total_penalty = scm_is_number (pen) ? scm_to_double (pen) : 0.0;
261 SCM mpen = m->get_property ("penalty");
262 if (scm_is_number (mpen))
263 total_penalty += scm_to_double (mpen);
265 command_column_->set_property ("penalty", scm_make_real (total_penalty));
267 /* ugh. arbitrary, hardcoded */
268 if (total_penalty > 10000.0)
271 SCM page_pen = command_column_->get_property ("page-penalty");
272 Real total_pp = scm_is_number (page_pen) ? scm_to_double (page_pen) : 0.0;
273 SCM mpage_pen = m->get_property ("page-penalty");
274 if (scm_is_number (mpage_pen))
275 total_pp += scm_to_double (mpage_pen);
277 command_column_->set_property ("page-penalty", scm_make_real (total_pp));
284 Score_engraver::forbid_breaks ()
287 command_column_->set_property ("breakable", SCM_EOL);
291 Score_engraver::acknowledge_grob (Grob_info gi)
293 if (Staff_spacing::has_interface (gi.grob_))
295 Pointer_group_interface::add_grob (command_column_,
296 ly_symbol2scm ("spacing-wishes"),
299 if (Note_spacing::has_interface (gi.grob_))
301 Pointer_group_interface::add_grob (musical_column_,
302 ly_symbol2scm ("spacing-wishes"),
306 if (Axis_group_interface::has_interface (gi.grob_)
307 && gi.grob_->internal_has_interface (ly_symbol2scm ("vertically-spaceable-interface")))
309 SCM spaceable = get_property ("verticallySpacedContexts");
310 Context *orig = gi.origin_contexts (this)[0];
312 if (scm_memq (ly_symbol2scm (orig->context_name ().to_str0()),
313 spaceable) != SCM_BOOL_F)
315 Pointer_group_interface::add_grob (system_,
316 ly_symbol2scm ("spaceable-staves"),
325 ADD_TRANSLATOR (Score_engraver,
326 /* descr */ "Top level engraver. Takes care of generating columns and the complete system (ie. System) "
328 "This engraver decides whether a column is breakable. The default is "
329 "that a column is always breakable. However, when every Bar_engraver "
330 "that does not have a barline at a certain point will call "
331 "Score_engraver::forbid_breaks to stop linebreaks. In practice, this "
332 "means that you can make a breakpoint by creating a barline (assuming "
333 "that there are no beams or notes that prevent a breakpoint.) "
335 /* creats*/ "System PaperColumn NonMusicalPaperColumn",
336 /* accepts */ "break-event",
337 /* acks */ "note-spacing-interface staff-spacing-interface axis-group-interface",
338 /* reads */ "currentMusicalColumn currentCommandColumn verticallySpacedContexts",