lily/axis-group-engraver.cc

   1 /*
   2   axis-group-engraver.cc --  implement Axis_group_engraver
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c) 1999--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
   7  */
   8
   9 #include "axis-group-engraver.hh"
  10 #include "spanner.hh"
  11 #include "paper-column.hh"
  12 #include "axis-group-interface.hh"
  13
  14 #include "engraver-group-engraver.hh"
  15
  16 Axis_group_engraver::Axis_group_engraver ()
  17 {
  18   staffline_p_ = 0;
  19 }
  20
  21 void
  22 Axis_group_engraver::do_creation_processing ()
  23 {
  24   staffline_p_ = get_spanner_p ();
  25   Axis_group_interface::set_interface (staffline_p_);
  26   Axis_group_interface::set_axes (staffline_p_, Y_AXIS, Y_AXIS);
  27
  28   Score_element *  it = unsmob_element (get_property ("currentCommandColumn"));
  29   Pointer_group_interface (it, "bounded-by-me").add_element (staffline_p_);
  30   staffline_p_->set_bound(LEFT,it);
  31
  32   announce_element (Score_element_info (staffline_p_, 0));
  33 }
  34
  35 Spanner*
  36 Axis_group_engraver::get_spanner_p () const
  37 {
  38   return new Spanner (get_property ("basicVerticalAxisGroupProperties"));
  39 }
  40
  41 void
  42 Axis_group_engraver::do_removal_processing ()
  43 {
  44   String type = daddy_grav_l ()->type_str_ ;
  45   SCM dims = get_property ((type  + "VerticalExtent").ch_C());
  46
  47   if (gh_pair_p (dims) && gh_number_p (gh_car (dims))
  48       && gh_number_p (gh_cdr (dims)))
  49     {
  50       staffline_p_->set_extent_callback (&Score_element::preset_extent, Y_AXIS);
  51       staffline_p_->set_elt_property ("extent-Y", dims);
  52     }
  53
  54   dims = get_property ((type + "MinimumVerticalExtent").ch_C());
  55   if (gh_pair_p (dims) && gh_number_p (gh_car (dims))
  56       && gh_number_p (gh_cdr (dims)))
  57     staffline_p_->set_elt_property ("minimum-extent-Y", dims);
  58
  59   dims = get_property ((type + "ExtraVerticalExtent").ch_C());
  60   if (gh_pair_p (dims) && gh_number_p (gh_car (dims))
  61       && gh_number_p (gh_cdr (dims)))
  62     staffline_p_->set_elt_property ("extra-extent-Y", dims);
  63
  64 Score_element *  it = unsmob_element (get_property ("currentCommandColumn"));
  65
  66   Pointer_group_interface (it, "bounded-by-me").add_element (staffline_p_);
  67   staffline_p_->set_bound(RIGHT,it);
  68
  69   typeset_element (staffline_p_);
  70   staffline_p_ = 0;
  71 }
  72
  73 void
  74 Axis_group_engraver::acknowledge_element (Score_element_info i)
  75 {
  76   elts_.push (i.elem_l_);
  77 }
  78
  79 void
  80 Axis_group_engraver::process_acknowledged ()
  81 {
  82   /* UGH UGH UGH */
  83   for (int i=0; i < elts_.size (); i++)
  84     {
  85       Score_element *par = elts_[i]->parent_l (Y_AXIS);
  86
  87       if ((!par || !Axis_group_interface::has_interface (par))
  88           && ! elts_[i]->empty_b (Y_AXIS))
  89         Axis_group_interface::add_element (staffline_p_, elts_[i]);
  90     }
  91   elts_.clear ();
  92 }
  93
  94 ADD_THIS_TRANSLATOR(Axis_group_engraver);