2 score-grav.cc -- implement Score_engraver
4 source file of the GNU LilyPond music typesetter
6 (c) 1997--1999 Han-Wen Nienhuys <hanwen@cs.uu.nl>
9 #include "dimension-cache.hh"
10 #include "line-of-score.hh"
12 #include "score-engraver.hh"
13 #include "paper-score.hh"
14 #include "musical-request.hh"
15 #include "score-column.hh"
16 #include "command-request.hh"
17 #include "paper-def.hh"
19 Score_engraver::Score_engraver()
29 Score_engraver::prepare (Moment w)
31 Global_translator::prepare (w);
32 set_columns (new Score_column (w), new Score_column (w));
34 command_column_l_->set_elt_property ("breakable", SCM_BOOL_T);
35 post_move_processing();
39 Score_engraver::finish()
42 *mlog << "[" << breaks_i_ << "]" << flush;
52 Score_engraver::do_creation_processing ()
54 scoreline_l_ = pscore_p_->line_l_;
56 scoreline_l_->set_bounds(LEFT, command_column_l_);
58 command_column_l_->set_elt_property ("breakable", SCM_BOOL_T);
60 Engraver_group_engraver::do_creation_processing();
65 Score_engraver::do_removal_processing()
67 Engraver_group_engraver::do_removal_processing();
68 scoreline_l_->set_bounds(RIGHT,command_column_l_);
69 command_column_l_->set_elt_property ("breakable", SCM_BOOL_T);
76 Score_engraver::process()
80 pre_move_processing();
85 Score_engraver::announce_element (Score_element_info info)
87 announce_info_arr_.push (info);
88 info.origin_trans_l_arr_.push (this);
89 pscore_p_->typeset_element (info.elem_l_);
92 /* All elements are propagated to the top upon announcement. If
93 something was created during one run of
94 Engraver_group_engraver::do_announces, then
95 announce_info_arr_.size() will be nonzero again
97 /* junkme? Done by Engraver_group_engraver::do_announces ()?
101 Score_engraver::do_announces()
103 while (announce_info_arr_.size())
104 Engraver_group_engraver::do_announces();
109 Score_engraver::typeset_element (Score_element *elem_p)
111 elem_p_arr_.push (elem_p);
116 Score_engraver::typeset_all()
118 for (int i =0; i < elem_p_arr_.size(); i++)
120 Score_element * elem_p = elem_p_arr_[i];
121 elem_p->add_processing ();
124 if (Spanner *s = dynamic_cast <Spanner *> (elem_p))
127 do something sensible if spanner not
132 if (!s->spanned_drul_[d])
134 s->set_bounds(d, command_column_l_);
135 ::warning (_f ("unbound spanner `%s'", classname(s)));
137 } while (flip(&d) != LEFT);
141 Item *item_p = dynamic_cast <Item *> (elem_p);
143 if (!item_p->parent_l (X_AXIS))
145 bool br = (item_p->remove_elt_property ("breakable") != SCM_UNDEFINED);
147 command_column_l_->add_element(item_p);
149 musical_column_l_->add_element(item_p);
152 if (!elem_p->parent_l(Y_AXIS))
153 scoreline_l_->add_element (elem_p);
159 Score_engraver::do_pre_move_processing()
161 if (command_column_l_->get_elt_property ("breakable") != SCM_UNDEFINED)
165 *mlog << "[" << breaks_i_ << "]" << flush;
167 // this generates all items.
168 Engraver_group_engraver::do_pre_move_processing();
174 Score_engraver::set_columns (Score_column *new_command_l,
175 Score_column *new_musical_l)
177 if (command_column_l_ && command_column_l_->linked_b())
179 pscore_p_->add_column (command_column_l_);
180 scoreline_l_->add_column (command_column_l_);
183 command_column_l_ =0;
186 command_column_l_ = new_command_l;
188 if (musical_column_l_ && musical_column_l_->linked_b())
190 pscore_p_->add_column (musical_column_l_);
191 scoreline_l_->add_column (musical_column_l_);
194 musical_column_l_ = 0;
198 musical_column_l_ = new_musical_l;
204 Score_engraver::get_staff_info() const
206 Staff_info inf = Engraver_group_engraver::get_staff_info();
208 inf.command_l_ = command_column_l_;
209 inf.musical_l_ = musical_column_l_;
216 Score_engraver::get_output_p ()
218 Music_output * o = pscore_p_;
224 Score_engraver::do_try_music (Music*r)
226 bool gotcha = Engraver_group_engraver::do_try_music (r);
230 if (Break_req* b = dynamic_cast<Break_req *> (r))
235 SCM pen = command_column_l_->get_elt_property ("penalty");
236 Real total_penalty = (pen == SCM_UNDEFINED)
238 : gh_scm2double(pen); // ugh. Should typecheck.
240 total_penalty += b->penalty_f_;
241 if (b->penalty_f_ > 10000.0) // ugh. arbitrary.
244 command_column_l_->set_elt_property ("penalty",
245 gh_double2scm (total_penalty));
252 Score_engraver::forbid_breaks ()
257 command_column_l_->remove_elt_property ("breakable");
260 ADD_THIS_TRANSLATOR(Score_engraver);
263 Score_engraver::do_add_processing ()
265 Translator_group::do_add_processing ();
266 assert (dynamic_cast<Paper_def *> (output_def_l_));
267 assert (!daddy_trans_l_);
268 pscore_p_ = new Paper_score;
269 pscore_p_->paper_l_ = dynamic_cast<Paper_def*>(output_def_l_);