lily/staff-margin-engraver.cc

   1 /*
   2   staff-margin-engraver.cc -- implement Staff_margin_engraver
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c) 1998--1999 Jan Nieuwenhuizen <janneke@gnu.org>
   7 */
   8
   9 #include "staff-margin-engraver.hh"
  10 #include "bar.hh"
  11 #include "time-description.hh"
  12 #include "text-item.hh"
  13 #include "staff-side.hh"
  14
  15 ADD_THIS_TRANSLATOR (Staff_margin_engraver);
  16
  17 Staff_margin_engraver::Staff_margin_engraver ()
  18 {
  19   axis_ = X_AXIS;
  20   type_ = "margin";
  21   visibility_lambda_
  22     = gh_eval_str ("postbreak_only_visibility");
  23 }
  24
  25
  26 /*
  27     TODO
  28
  29     should be able to set whole paragraph (multiple lines, center) to
  30     left (right?) of staff, e.g.:
  31                     ______
  32                    |_______
  33       2 Clarinetti |________
  34          (Bb)      |___________
  35                    |______________
  36 */
  37 void
  38 Staff_margin_engraver::acknowledge_element (Score_element_info inf)
  39 {
  40   Item *i = cast_to_interesting_item (inf.elem_l_);
  41   if (!i || inf.origin_trans_l_arr_.size() != 1)
  42     return;
  43
  44
  45   String long_str = get_property ("instrument", 0);
  46   String str = get_property ("instr", 0);
  47   if (now_mom () > Moment (0) && str.length_i ())
  48     long_str = str;
  49
  50   if (long_str.empty_b ())
  51     return;
  52
  53   create_items (0);
  54   text_p_->text_str_ = long_str;
  55   staff_side_p_->dir_ = LEFT;
  56   Bar_script_engraver::do_acknowledge_element (i);
  57
  58   /*
  59     UGH. ignores font size settings.
  60    */
  61   Interval iv(text_p_->extent (Y_AXIS));
  62   text_p_->translate_axis (- iv.center (),  Y_AXIS);
  63 }
  64
  65