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<Grob> slur_l_stack_;
21 Link_array<Grob> end_slur_l_arr_;
24 void set_melisma (bool);
27 virtual bool try_music (Music*);
28 void deprecated_process_music ();
29 virtual void acknowledge_grob (Grob_info);
30 virtual void stop_translation_timestep ();
31 virtual void start_translation_timestep ();
32 virtual void do_removal_processing ();
33 virtual void create_grobs ();
36 VIRTUAL_COPY_CONS (Translator);
40 Slur_engraver::Slur_engraver ()
42 last_start_ = Moment (-1);
46 Slur_engraver::try_music (Music *req_l)
48 if (Span_req *sl = dynamic_cast <Span_req *> (req_l))
50 String t = ly_scm2string (sl->get_mus_property ("span-type"));
53 for (int i = 0; i < slur_l_stack_.size (); i++)
55 slur_l_stack_[i]->suicide ();
57 slur_l_stack_.clear ();
58 for (int i = 0; i < end_slur_l_arr_.size (); i++)
60 end_slur_l_arr_[i]->suicide ();
62 end_slur_l_arr_.clear ();
63 requests_arr_.clear ();
64 new_slur_req_l_arr_.clear ();
69 Let's not start more than one slur per moment.
71 if (sl->get_span_dir() == START)
73 if (now_mom () > last_start_)
75 new_slur_req_l_arr_.push (sl);
76 last_start_ = now_mom ();
82 new_slur_req_l_arr_.push (sl);
91 Slur_engraver::create_grobs ()
93 deprecated_process_music ();
97 Slur_engraver::set_melisma (bool m)
99 daddy_trans_l_->set_property ("slurMelismaBusy", m ? SCM_BOOL_T :SCM_BOOL_F);
103 Slur_engraver::acknowledge_grob (Grob_info info)
105 if (Note_column::has_interface (info.elem_l_))
107 Grob *e =info.elem_l_;
108 for (int i = 0; i < slur_l_stack_.size (); i++)
109 Slur::add_column (slur_l_stack_[i], e);
110 for (int i = 0; i < end_slur_l_arr_.size (); i++)
111 Slur::add_column (end_slur_l_arr_[i], e);
116 Slur_engraver::do_removal_processing ()
118 for (int i = 0; i < slur_l_stack_.size (); i++)
121 typeset_grob (slur_l_stack_[i]);
124 Let's not typeset unterminated stuff
126 slur_l_stack_[i]->suicide ();
129 slur_l_stack_.clear ();
130 SCM wg = get_property ("weAreGraceContext");
131 bool wgb = to_boolean (wg);
133 for (int i=0; i < requests_arr_.size (); i++)
135 requests_arr_[i]->origin ()->warning (_ ("unterminated slur"));
140 Slur_engraver::deprecated_process_music ()
142 Link_array<Grob> start_slur_l_arr;
143 for (int i=0; i< new_slur_req_l_arr_.size (); i++)
145 Span_req* slur_req_l = new_slur_req_l_arr_[i];
146 // end slur: move the slur to other array
147 if (slur_req_l->get_span_dir() == STOP)
149 if (slur_l_stack_.empty ())
150 slur_req_l->origin ()->warning (_f ("can't find start of slur"));
153 Grob* slur = slur_l_stack_.pop ();
154 SCM s = get_property ("slurEndAttachment");
157 index_set_cell (slur->get_grob_property ("attachment"), STOP, s);
159 end_slur_l_arr_.push (slur);
160 requests_arr_.pop ();
163 else if (slur_req_l->get_span_dir() == START)
165 // push a new slur onto stack.
166 // (use temp. array to wait for all slur STOPs)
167 Grob* slur = new Spanner (get_property ("Slur"));
168 Slur::set_interface (slur);
169 SCM s = get_property ("slurBeginAttachment");
172 index_set_cell (slur->get_grob_property ("attachment"), START, s);
174 start_slur_l_arr.push (slur);
175 requests_arr_.push (slur_req_l);
176 announce_grob (slur, slur_req_l);
179 for (int i=0; i < start_slur_l_arr.size (); i++)
180 slur_l_stack_.push (start_slur_l_arr[i]);
181 new_slur_req_l_arr_.clear ();
185 Slur_engraver::stop_translation_timestep ()
187 for (int i = 0; i < end_slur_l_arr_.size (); i++)
189 typeset_grob (end_slur_l_arr_[i]);
191 end_slur_l_arr_.clear ();
195 Slur_engraver::start_translation_timestep ()
197 new_slur_req_l_arr_.clear ();
198 SCM m = get_property ("automaticMelismata");
201 set_melisma (slur_l_stack_.size ());
206 ADD_THIS_TRANSLATOR (Slur_engraver);