lily/script-engraver.cc

   1 /*
   2   script-engraver.cc -- implement Script_engraver
   3
   4   (c)  1997--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
   5 */
   6
   7
   8 #include "script.hh"
   9 #include "side-position-interface.hh"
  10 #include "musical-request.hh"
  11 #include "stem.hh"
  12 #include "staff-symbol.hh"
  13 #include "rhythmic-head.hh"
  14 #include "dimension-cache.hh"
  15
  16 #include "engraver.hh"
  17
  18 class Script_engraver : public Engraver {
  19   Link_array<Script> script_p_arr_;
  20   Link_array<Articulation_req> script_req_l_arr_;
  21
  22 public:
  23   VIRTUAL_COPY_CONS(Translator);
  24
  25   Script_engraver();
  26 protected:
  27   virtual bool do_try_music (Music*);
  28   virtual void do_process_requests ();
  29   virtual void do_pre_move_processing ();
  30   virtual void do_post_move_processing ();
  31   virtual void acknowledge_element (Score_element_info);
  32 };
  33
  34
  35 Script_engraver::Script_engraver()
  36 {
  37   do_post_move_processing();
  38 }
  39
  40 bool
  41 Script_engraver::do_try_music (Music *r_l)
  42 {
  43   if (Articulation_req *mr = dynamic_cast <Articulation_req *> (r_l))
  44     {
  45       for (int i=0; i < script_req_l_arr_.size(); i++)
  46         {
  47           if (script_req_l_arr_[i]->equal_b (mr))
  48             return true;
  49         }
  50       script_req_l_arr_.push (mr);
  51       return true;
  52     }
  53   return false;
  54 }
  55
  56 void
  57 Script_engraver::do_process_requests()
  58 {
  59   for (int i=0; i < script_req_l_arr_.size(); i++)
  60     {
  61       Articulation_req* l=script_req_l_arr_[i];
  62
  63       SCM list = ly_eval_str (("(articulation-to-scriptdef \"" + l->articulation_str_ + "\")").ch_C());
  64
  65       if (list == SCM_BOOL_F)
  66         {
  67           l->warning (_f ("Don't know how to interpret articulation `%s'",
  68                         l->articulation_str_.ch_C ()));
  69           continue;
  70         }
  71       Script *p =new Script;
  72       Side_position_interface stafy (p);
  73
  74
  75       list = gh_cdr (list);
  76       p->set_elt_property ("molecule",
  77                            gh_car (list));
  78
  79       list = gh_cdr(list);
  80       bool follow_staff = gh_scm2bool (gh_car (list));
  81       list = gh_cdr(list);
  82       int relative_stem_dir = gh_scm2int (gh_car (list));
  83       list = gh_cdr(list);
  84       int force_dir =gh_scm2int (gh_car (list));
  85       list = gh_cdr(list);
  86       SCM priority = gh_car (list);
  87
  88
  89       if (relative_stem_dir)
  90           p->set_elt_property ("side-relative-direction", gh_int2scm (relative_stem_dir));
  91       else
  92           stafy.set_direction ((Direction)force_dir);
  93
  94       if (l->get_direction ())
  95         stafy.set_direction (l->get_direction ());
  96
  97       SCM axisprop = get_property ("scriptHorizontal");
  98       bool xaxis = to_boolean (axisprop);
  99       if (xaxis)
 100         stafy.set_axis (X_AXIS);
 101       else
 102         stafy.set_axis (Y_AXIS);
 103
 104       if (!follow_staff && ! xaxis)
 105         p->set_elt_property ("staff-support", SCM_BOOL_T);
 106
 107       if (!xaxis && follow_staff)
 108         stafy.set_quantised (Y_AXIS);
 109
 110       p->set_elt_property ("script-priority", priority);
 111
 112       script_p_arr_.push (p);
 113
 114       announce_element (Score_element_info (p, l));
 115     }
 116 }
 117
 118 void
 119 Script_engraver::acknowledge_element (Score_element_info inf)
 120 {
 121   bool them_grace = to_boolean (inf.elem_l_->get_elt_property ("grace"));
 122   bool us_grace = to_boolean (get_property ("weAreGraceContext"));
 123
 124   if (us_grace != them_grace)
 125     return;
 126
 127   if (Stem *s = dynamic_cast<Stem*>(inf.elem_l_))
 128     {
 129       for (int i=0; i < script_p_arr_.size(); i++)
 130         {
 131           Side_position_interface stafy (script_p_arr_[i]);
 132           stafy.elt_l_->set_elt_property ("direction-source", s->self_scm_);
 133           stafy.add_support (s);
 134         }
 135     }
 136   else if (Rhythmic_head * rh = dynamic_cast<Rhythmic_head*>(inf.elem_l_))
 137     {
 138       for (int i=0; i < script_p_arr_.size(); i++)
 139         {
 140           Side_position_interface stafy(script_p_arr_[i]);
 141
 142           if (!stafy.elt_l_->parent_l (X_AXIS))
 143             {
 144               stafy.elt_l_->set_parent (inf.elem_l_, X_AXIS);
 145             }
 146           if (stafy.get_axis () == X_AXIS
 147               && !stafy.elt_l_->parent_l (Y_AXIS))
 148             stafy.elt_l_->set_parent (rh, Y_AXIS);
 149
 150           stafy.add_support (rh);
 151         }
 152     }
 153 }
 154
 155 void
 156 Script_engraver::do_pre_move_processing()
 157 {
 158   for (int i=0; i < script_p_arr_.size(); i++)
 159     {
 160       if (to_boolean (script_p_arr_[i]->remove_elt_property ("staff-support")))
 161         side_position (script_p_arr_[i]).add_staff_support ();
 162       typeset_element (script_p_arr_[i]);
 163     }
 164   script_p_arr_.clear();
 165 }
 166
 167 void
 168 Script_engraver::do_post_move_processing()
 169 {
 170   script_req_l_arr_.clear();
 171 }
 172
 173 ADD_THIS_TRANSLATOR(Script_engraver);
 174
 175