2 slur-grav.cc -- implement Slur_engraver
4 (c) 1997--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
7 #include "musical-request.hh"
8 #include "slur-engraver.hh"
11 #include "note-column.hh"
12 #include "translator-group.hh"
13 #include "engraver.hh"
16 class Slur_engraver : public Engraver
18 Link_array<Span_req> requests_arr_;
19 Link_array<Span_req> new_slur_req_l_arr_;
20 Link_array<Score_element> slur_l_stack_;
21 Link_array<Score_element> end_slur_l_arr_;
24 void set_melisma (bool);
27 virtual bool do_try_music (Music*);
28 virtual void do_process_music ();
29 virtual void acknowledge_element (Score_element_info);
30 virtual void do_pre_move_processing ();
31 virtual void do_post_move_processing ();
32 virtual void do_removal_processing ();
35 VIRTUAL_COPY_CONS (Translator);
39 Slur_engraver::Slur_engraver ()
41 last_start_ = Moment (-1);
45 Slur_engraver::do_try_music (Music *req_l)
47 if (Span_req *sl = dynamic_cast <Span_req *> (req_l))
49 if (sl->span_type_str_ == "abort")
51 for (int i = 0; i < slur_l_stack_.size (); i++)
53 slur_l_stack_[i]->suicide ();
55 slur_l_stack_.clear ();
56 for (int i = 0; i < end_slur_l_arr_.size (); i++)
58 end_slur_l_arr_[i]->suicide ();
60 end_slur_l_arr_.clear ();
61 requests_arr_.clear ();
62 new_slur_req_l_arr_.clear ();
64 else if (sl->span_type_str_ == "slur")
67 Let's not start more than one slur per moment.
69 if (sl->get_span_dir() == START)
71 if (now_mom () > last_start_)
73 new_slur_req_l_arr_.push (sl);
74 last_start_ = now_mom ();
80 new_slur_req_l_arr_.push (sl);
89 Slur_engraver::set_melisma (bool m)
91 daddy_trans_l_->set_property ("slurMelismaBusy", m ? SCM_BOOL_T :SCM_BOOL_F);
95 Slur_engraver::acknowledge_element (Score_element_info info)
97 if (Note_column::has_interface (info.elem_l_))
99 Score_element *e =info.elem_l_;
100 for (int i = 0; i < slur_l_stack_.size (); i++)
101 Slur::add_column (slur_l_stack_[i], e);
102 for (int i = 0; i < end_slur_l_arr_.size (); i++)
103 Slur::add_column (end_slur_l_arr_[i], e);
108 Slur_engraver::do_removal_processing ()
110 for (int i = 0; i < slur_l_stack_.size (); i++)
113 typeset_element (slur_l_stack_[i]);
116 Let's not typeset unterminated stuff
118 slur_l_stack_[i]->suicide ();
121 slur_l_stack_.clear ();
122 SCM wg = get_property ("weAreGraceContext");
123 bool wgb = to_boolean (wg);
125 for (int i=0; i < requests_arr_.size (); i++)
127 requests_arr_[i]->origin ()->warning (_ ("unterminated slur"));
132 Slur_engraver::do_process_music ()
134 Link_array<Score_element> start_slur_l_arr;
135 for (int i=0; i< new_slur_req_l_arr_.size (); i++)
137 Span_req* slur_req_l = new_slur_req_l_arr_[i];
138 // end slur: move the slur to other array
139 if (slur_req_l->get_span_dir() == STOP)
141 if (slur_l_stack_.empty ())
142 slur_req_l->origin ()->warning (_f ("can't find start of slur"));
145 Score_element* slur = slur_l_stack_.pop ();
146 SCM s = get_property ("slurEndAttachment");
149 index_set_cell (slur->get_elt_property ("attachment"), STOP, s);
151 end_slur_l_arr_.push (slur);
152 requests_arr_.pop ();
155 else if (slur_req_l->get_span_dir() == START)
157 // push a new slur onto stack.
158 // (use temp. array to wait for all slur STOPs)
159 Score_element* slur = new Spanner (get_property ("Slur"));
160 Slur::set_interface (slur);
161 SCM s = get_property ("slurBeginAttachment");
164 index_set_cell (slur->get_elt_property ("attachment"), START, s);
166 start_slur_l_arr.push (slur);
167 requests_arr_.push (slur_req_l);
168 announce_element (slur, slur_req_l);
171 for (int i=0; i < start_slur_l_arr.size (); i++)
172 slur_l_stack_.push (start_slur_l_arr[i]);
176 Slur_engraver::do_pre_move_processing ()
178 for (int i = 0; i < end_slur_l_arr_.size (); i++)
180 typeset_element (end_slur_l_arr_[i]);
182 end_slur_l_arr_.clear ();
186 Slur_engraver::do_post_move_processing ()
188 new_slur_req_l_arr_.clear ();
189 SCM m = get_property ("automaticMelismata");
192 set_melisma (slur_l_stack_.size ());
197 ADD_THIS_TRANSLATOR (Slur_engraver);