lily/tie-column.cc

   1 /*
   2   This file is part of LilyPond, the GNU music typesetter.
   3
   4   Copyright (C) 2000--2011 Han-Wen Nienhuys <hanwen@xs4all.nl>
   5
   6   LilyPond is free software: you can redistribute it and/or modify
   7   it under the terms of the GNU General Public License as published by
   8   the Free Software Foundation, either version 3 of the License, or
   9   (at your option) any later version.
  10
  11   LilyPond is distributed in the hope that it will be useful,
  12   but WITHOUT ANY WARRANTY; without even the implied warranty of
  13   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14   GNU General Public License for more details.
  15
  16   You should have received a copy of the GNU General Public License
  17   along with LilyPond.  If not, see <http://www.gnu.org/licenses/>.
  18 */
  19
  20 #include "tie-column.hh"
  21
  22 #include <cmath>
  23
  24 #include "output-def.hh"
  25 #include "skyline.hh"
  26 #include "warn.hh"
  27 #include "paper-column.hh"
  28 #include "spanner.hh"
  29 #include "pointer-group-interface.hh"
  30 #include "tie.hh"
  31 #include "directional-element-interface.hh"
  32 #include "tie-column-format.hh"
  33 #include "tie-formatting-problem.hh"
  34 #include "tie-configuration.hh"
  35
  36 using namespace std;
  37
  38 void
  39 Tie_column::add_tie (Grob *tc, Grob *tie)
  40 {
  41   Spanner *me = dynamic_cast<Spanner *> (tc);
  42
  43   if (tie->get_parent (Y_AXIS)
  44       && Tie_column::has_interface (tie->get_parent (Y_AXIS)))
  45     return;
  46
  47   if (!me->get_bound (LEFT)
  48       || (Paper_column::get_rank (me->get_bound (LEFT)->get_column ())
  49           > Paper_column::get_rank (dynamic_cast<Spanner*> (tie)->get_bound (LEFT)->get_column ())))
  50     {
  51         me->set_bound (LEFT, Tie::head (tie, LEFT));
  52         me->set_bound (RIGHT, Tie::head (tie, RIGHT));
  53     }
  54
  55   tie->set_parent (me, Y_AXIS);
  56   Pointer_group_interface::add_grob (me, ly_symbol2scm ("ties"), tie);
  57 }
  58
  59 /*
  60   Extend the spanner over its Tie constituents.
  61 */
  62 MAKE_SCHEME_CALLBACK (Tie_column, before_line_breaking, 1);
  63 SCM
  64 Tie_column::before_line_breaking (SCM smob)
  65 {
  66   Spanner *me = dynamic_cast<Spanner *> (unsmob_grob (smob));
  67   for (SCM s = me->get_property ("ties"); scm_is_pair (s); s = scm_cdr (s))
  68     {
  69       Spanner *tie = dynamic_cast<Spanner *> (unsmob_grob (scm_car (s)));
  70       Direction dir = LEFT;
  71       do
  72         {
  73           if (dir * tie->get_bound (dir)->get_column ()->get_rank ()
  74               > dir * me->get_bound (dir)->get_column ()->get_rank ())
  75             me->set_bound (dir, Tie::head (tie, dir));
  76         }
  77       while (flip (&dir) != LEFT);
  78     }
  79
  80   return SCM_UNSPECIFIED;
  81 }
  82
  83 MAKE_SCHEME_CALLBACK (Tie_column, calc_positioning_done, 1)
  84 SCM
  85 Tie_column::calc_positioning_done (SCM smob)
  86 {
  87   Grob *me = unsmob_grob (smob);
  88   extract_grob_set (me, "ties", ro_ties);
  89   vector<Grob*> ties (ro_ties);
  90   if (!ties.size ())
  91     return SCM_BOOL_T;
  92
  93   me->set_property ("positioning-done", SCM_BOOL_T);
  94   vector_sort (ties, Tie::less);
  95
  96   Tie_formatting_problem problem;
  97   problem.from_ties (ties);
  98
  99   SCM manual_configs = me->get_property ("tie-configuration");
 100   problem.set_manual_tie_configuration (manual_configs);
 101
 102   Ties_configuration base = problem.generate_optimal_configuration ();
 103   for (vsize i = 0; i < base.size (); i++)
 104     {
 105       SCM cp = Tie::get_control_points (ties[i], problem.common_x_refpoint (),
 106                                         base[i],
 107                                         problem.details_);
 108
 109       ties[i]->set_property ("control-points", cp);
 110       set_grob_direction (ties[i],
 111                           base[i].dir_);
 112
 113       problem.set_debug_scoring (base);
 114     }
 115   return SCM_BOOL_T;
 116 }
 117
 118
 119
 120 ADD_INTERFACE (Tie_column,
 121                "Object that sets directions of multiple ties in a tied"
 122                " chord.",
 123
 124                /* properties */
 125                "positioning-done "
 126                "tie-configuration "
 127                );
 128