lily/semi-tie.cc

   1 /*
   2   semi-tie.cc -- implement Semi_tie
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c) 2005--2007 Han-Wen Nienhuys <hanwen@xs4all.nl>
   7
   8 */
   9
  10 #include "semi-tie-column.hh"
  11 #include "semi-tie.hh"
  12 #include "directional-element-interface.hh"
  13 #include "grob.hh"
  14 #include "tie.hh"
  15 #include "warn.hh"
  16 #include "staff-symbol-referencer.hh"
  17
  18 ADD_INTERFACE (Semi_tie,
  19               "A tie which is only on one side connected to a note head.",
  20
  21               /* properties */
  22               "control-points "
  23               "direction "
  24               "details "
  25               "head-direction "
  26               "note-head "
  27               "thickness "
  28               );
  29
  30 MAKE_SCHEME_CALLBACK (Semi_tie, calc_control_points, 1)
  31 SCM
  32 Semi_tie::calc_control_points (SCM smob)
  33 {
  34   Grob *me = unsmob_grob (smob);
  35   (void) me->get_property ("direction");
  36
  37   if (Semi_tie_column::has_interface (me->get_parent (Y_AXIS)))
  38     {
  39       me->get_parent (Y_AXIS)->get_property ("positioning-done");
  40     }
  41   else
  42     {
  43       programming_error ("lv tie without Semi_tie_column. Killing lv tie.");
  44       me->suicide ();
  45     }
  46
  47   return me->get_property_data ("control-points");
  48 }
  49
  50 int
  51 Semi_tie::get_position (Grob *me)
  52 {
  53   Grob *h = unsmob_grob (me->get_object ("note-head"));
  54   return (int) rint (Staff_symbol_referencer::get_position (h));
  55 }
  56
  57 bool
  58 Semi_tie::less (Grob *const &s1,
  59                 Grob *const &s2)
  60 {
  61   return get_position (s1) < get_position (s2);
  62 }
  63