Merge branch 'master' of ssh+git://hanwen@git.sv.gnu.org/srv/git/lilypond

[lilypond.git] / lily / tie-column.cc

diff --git a/lily/tie-column.cc b/lily/tie-column.cc
index f23d218d9316ca1dc82d970700fa3e789caf76d4..b54428d986fca49ac7a1b2492cefd227c762c8f6 100644 (file)
--- a/lily/tie-column.cc
+++ b/lily/tie-column.cc
@@ -1,98 +1,120 @@
-/*   
-  tie-column.cc --  implement Tie_column
-  
+/*
+  tie-column.cc -- implement Tie_column
+
   source file of the GNU LilyPond music typesetter
-  
-  (c) 2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
-  
- */
+
+  (c) 2000--2007 Han-Wen Nienhuys <hanwen@xs4all.nl>
+*/
 
 #include "tie-column.hh"
-#include "group-interface.hh"
+
+#include <cmath>
+
+#include "output-def.hh"
+#include "skyline.hh"
+#include "warn.hh"
+#include "paper-column.hh"
+#include "spanner.hh"
+#include "pointer-group-interface.hh"
 #include "tie.hh"
 #include "directional-element-interface.hh"
-#include "note-head.hh"
+#include "tie-column-format.hh"
+#include "tie-formatting-problem.hh"
+#include "tie-configuration.hh"
+
+using namespace std;
 
-Tie_column::Tie_column ()
+void
+Tie_column::add_tie (Grob *tc, Grob *tie)
 {
-  set_elt_property ("ties", SCM_EOL);
-  set_empty (X_AXIS);
-  set_empty (Y_AXIS);  
-  set_elt_property ("transparent", SCM_BOOL_T);
+  Spanner *me = dynamic_cast<Spanner *> (tc);
+  
+  if (tie->get_parent (Y_AXIS)
+      && Tie_column::has_interface (tie->get_parent (Y_AXIS)))
+    return;
+
+  if (!me->get_bound (LEFT)
+      || (Paper_column::get_rank (me->get_bound (LEFT)->get_column ())
+         > Paper_column::get_rank (dynamic_cast<Spanner*> (tie)->get_bound (LEFT)->get_column ())))
+    {
+       me->set_bound (LEFT, Tie::head (tie, LEFT));
+       me->set_bound (RIGHT, Tie::head (tie, RIGHT));
+    }
+      
+  tie->set_parent (me, Y_AXIS);
+  Pointer_group_interface::add_grob (me, ly_symbol2scm ("ties"), tie);
 }
 
-void
-Tie_column::add_tie (Tie *s)
+/*
+  Extend the spanner over its Tie constituents.
+*/
+MAKE_SCHEME_CALLBACK (Tie_column, before_line_breaking, 1);
+SCM
+Tie_column::before_line_breaking (SCM smob)
 {
-  Group_interface g (this, "ties");
-  if (!g.count ())
+  Spanner *me = dynamic_cast<Spanner *> (unsmob_grob (smob));
+  for (SCM s = me->get_property ("ties"); scm_is_pair (s); s = scm_cdr (s))
     {
-      set_bounds (LEFT, s->head (LEFT));
-      set_bounds (RIGHT, s->head (RIGHT));
+      Spanner *tie = dynamic_cast<Spanner *> (unsmob_grob (scm_car (s)));
+      Direction dir = LEFT;
+      do
+       {
+         if (dir * tie->get_bound (dir)->get_column ()->get_rank ()
+             > dir * me->get_bound (dir)->get_column ()->get_rank ())
+           me->set_bound (dir, Tie::head (tie, dir));
+       }
+      while (flip (&dir) != LEFT);
     }
   
-  group (this, "ties").add_element (s);
-  s->add_dependency (this);
+  return SCM_UNSPECIFIED;
 }
 
-
-int
-tie_compare (Tie* const & s1,
-            Tie* const & s2)
+MAKE_SCHEME_CALLBACK(Tie_column, calc_positioning_done, 1)
+SCM
+Tie_column::calc_positioning_done (SCM smob)
 {
-  return sign (s1->position_f () - s2->position_f());
-}
+  Grob *me = unsmob_grob (smob);
+  extract_grob_set (me, "ties", ro_ties);
+  vector<Grob*> ties (ro_ties);
+  if (!ties.size ())
+    return SCM_BOOL_T;
 
-/*
-  See [Ross p. 138].
 
+  me->set_property ("positioning-done", SCM_BOOL_T);
 
-  In normal chord cases, the outer ties point outwards, and the
-  direction of the rest is determined by their staff position.
+  vector_sort (ties, Tie::less);
 
-  Ross forgets about the tie that is *on* the middle staff line. We
-  assume it goes UP. (TODO: make this settable) */
-void
-Tie_column::set_directions ()
-{
-  Link_array<Tie> s =
-    Group_interface__extract_elements (this, (Tie*)0, "ties");
+  Tie_formatting_problem problem;
+  problem.from_ties (ties);
 
+  SCM manual_configs = me->get_property ("tie-configuration");
+  problem.set_manual_tie_configuration (manual_configs);
 
-  Direction d = directional_element (this).get ();
 
-  if (d)
-    {
-      for (int i = s.size (); i--;)
-       directional_element (s[i]).set (d);
-      return;
-    }
-  
-  if (s.size () == 1)
-    {
-      directional_element (s[0]).set (s[0]->get_default_dir ());
-      return;
-    }
-  
-  s.sort (tie_compare);
-  directional_element (s[0]).set (DOWN);
-  s.del (0);
-  directional_element (s.pop ()).set (UP);
+  Ties_configuration base = problem.generate_optimal_configuration ();
 
-  for (int i=s.size(); i--; )
+  for (vsize i = 0; i < base.size(); i++)
     {
-      Real p = s[i]->position_f ();
-      Direction d = (Direction) sign (p);
-      if (!d)
-       d = UP;
+      SCM cp = Tie::get_control_points (ties[i], problem.common_x_refpoint (),
+                                       base[i],
+                                       problem.details_);
 
-      directional_element (s[i]).set (d);
+      ties[i]->set_property ("control-points", cp);
+      set_grob_direction (ties[i],
+                         base[i].dir_);
+
+      problem.set_debug_scoring (base);
     }
-  
+  return SCM_BOOL_T;
 }
 
-void
-Tie_column::do_post_processing ()
-{
-  set_directions ();
-}
+
+
+ADD_INTERFACE (Tie_column,
+              "Object that sets directions of multiple ties in a tied chord",
+
+              /* properties */
+              "positioning-done "
+              "tie-configuration "
+              );
+