lily/tie-column-format.cc

   1 /*
   2   tie-column-format.cc -- implement formatting routines for Tie_column
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c) 2005--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
   7
   8 */
   9
  10 #include "stem.hh"
  11 #include "note-head.hh"
  12 #include "tie.hh"
  13 #include "parray.hh"
  14 #include "spanner.hh"
  15 #include "item.hh"
  16 #include "staff-symbol-referencer.hh"
  17 #include "directional-element-interface.hh"
  18 #include "rhythmic-head.hh"
  19 #include "tie-formatting-problem.hh"
  20 #include "tie-configuration.hh"
  21
  22 #include <set>
  23
  24
  25 void
  26 shift_small_ties (Ties_configuration *tie_configs,
  27                   Grob *staff_referencer,
  28                   Tie_details const &details)
  29 {
  30   set<int> positions_taken;
  31   for (int i = 0; i < tie_configs->size (); i++)
  32     positions_taken.insert (int (rint (tie_configs->elem (i).position_)));
  33
  34   for (int i = 0; i < tie_configs->size (); i++)
  35     {
  36       Tie_configuration * conf = &tie_configs->elem_ref (i);
  37
  38       /*
  39         on staff line and small enough, translate a little further
  40       */
  41       Real h = conf->height (details);
  42       bool next_free = positions_taken.find (int (rint (conf->position_ + conf->dir_)))
  43         == positions_taken.end ();
  44
  45       int rounded_pos = int (rint (conf->position_ + conf->delta_y_ / details.staff_space_));
  46       bool on_line = Staff_symbol_referencer::on_staffline (staff_referencer, rounded_pos);
  47
  48       if (next_free)
  49         if (on_line && h < 0.4 * details.staff_space_)
  50           {
  51             positions_taken.insert (int (rint (conf->position_ + conf->dir_)));
  52             conf->delta_y_ += 0.2 * details.staff_space_ * conf->dir_;
  53           }
  54         else if (!on_line && h > 0.6 * details.staff_space_)
  55           {
  56             positions_taken.insert (int (rint (conf->position_ + conf->dir_)));
  57             conf->delta_y_ += 0.5 * details.staff_space_ * conf->dir_;
  58           }
  59     }
  60 }
  61
  62
  63 void
  64 final_shape_adjustment (Tie_configuration &conf,
  65                         Tie_formatting_problem const &problem,
  66                         Grob *staff_referencer)
  67 {
  68   Tie_details const &details (problem.details_);
  69   Real line_dy = 0.0;
  70   bool on_line = Staff_symbol_referencer::on_staffline (staff_referencer,
  71                                                         int (rint (conf.position_)));
  72   if (on_line)
  73     line_dy = - sign (conf.height (details) - 0.6 * details.staff_space_)
  74       * 0.2 * details.staff_space_ * conf.dir_;
  75
  76   Real y = conf.position_ * details.staff_space_ * 0.5
  77     + line_dy;
  78
  79   conf.attachment_x_ = problem.get_attachment (y);
  80   conf.attachment_x_.intersect (problem.get_attachment (y + conf.dir_ * details.staff_space_ * 0.5));
  81
  82   conf.delta_y_ += line_dy;
  83   conf.attachment_x_.widen (-details.x_gap_);
  84   if (!on_line
  85       && Staff_symbol_referencer::staff_radius (staff_referencer) * details.staff_space_ > y)
  86     conf.center_tie_vertically (details);
  87 }
  88
  89