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 String t = ly_scm2string (sl->get_mus_property ("span-type"));
52 for (int i = 0; i < slur_l_stack_.size (); i++)
54 slur_l_stack_[i]->suicide ();
56 slur_l_stack_.clear ();
57 for (int i = 0; i < end_slur_l_arr_.size (); i++)
59 end_slur_l_arr_[i]->suicide ();
61 end_slur_l_arr_.clear ();
62 requests_arr_.clear ();
63 new_slur_req_l_arr_.clear ();
68 Let's not start more than one slur per moment.
70 if (sl->get_span_dir() == START)
72 if (now_mom () > last_start_)
74 new_slur_req_l_arr_.push (sl);
75 last_start_ = now_mom ();
81 new_slur_req_l_arr_.push (sl);
90 Slur_engraver::set_melisma (bool m)
92 daddy_trans_l_->set_property ("slurMelismaBusy", m ? SCM_BOOL_T :SCM_BOOL_F);
96 Slur_engraver::acknowledge_element (Score_element_info info)
98 if (Note_column::has_interface (info.elem_l_))
100 Score_element *e =info.elem_l_;
101 for (int i = 0; i < slur_l_stack_.size (); i++)
102 Slur::add_column (slur_l_stack_[i], e);
103 for (int i = 0; i < end_slur_l_arr_.size (); i++)
104 Slur::add_column (end_slur_l_arr_[i], e);
109 Slur_engraver::do_removal_processing ()
111 for (int i = 0; i < slur_l_stack_.size (); i++)
114 typeset_element (slur_l_stack_[i]);
117 Let's not typeset unterminated stuff
119 slur_l_stack_[i]->suicide ();
122 slur_l_stack_.clear ();
123 SCM wg = get_property ("weAreGraceContext");
124 bool wgb = to_boolean (wg);
126 for (int i=0; i < requests_arr_.size (); i++)
128 requests_arr_[i]->origin ()->warning (_ ("unterminated slur"));
133 Slur_engraver::do_process_music ()
135 Link_array<Score_element> start_slur_l_arr;
136 for (int i=0; i< new_slur_req_l_arr_.size (); i++)
138 Span_req* slur_req_l = new_slur_req_l_arr_[i];
139 // end slur: move the slur to other array
140 if (slur_req_l->get_span_dir() == STOP)
142 if (slur_l_stack_.empty ())
143 slur_req_l->origin ()->warning (_f ("can't find start of slur"));
146 Score_element* slur = slur_l_stack_.pop ();
147 SCM s = get_property ("slurEndAttachment");
150 index_set_cell (slur->get_elt_property ("attachment"), STOP, s);
152 end_slur_l_arr_.push (slur);
153 requests_arr_.pop ();
156 else if (slur_req_l->get_span_dir() == START)
158 // push a new slur onto stack.
159 // (use temp. array to wait for all slur STOPs)
160 Score_element* slur = new Spanner (get_property ("Slur"));
161 Slur::set_interface (slur);
162 SCM s = get_property ("slurBeginAttachment");
165 index_set_cell (slur->get_elt_property ("attachment"), START, s);
167 start_slur_l_arr.push (slur);
168 requests_arr_.push (slur_req_l);
169 announce_element (slur, slur_req_l);
172 for (int i=0; i < start_slur_l_arr.size (); i++)
173 slur_l_stack_.push (start_slur_l_arr[i]);
177 Slur_engraver::do_pre_move_processing ()
179 for (int i = 0; i < end_slur_l_arr_.size (); i++)
181 typeset_element (end_slur_l_arr_[i]);
183 end_slur_l_arr_.clear ();
187 Slur_engraver::do_post_move_processing ()
189 new_slur_req_l_arr_.clear ();
190 SCM m = get_property ("automaticMelismata");
193 set_melisma (slur_l_stack_.size ());
198 ADD_THIS_TRANSLATOR (Slur_engraver);