Run `make grand-replace'.

[lilypond.git] / lily / spaceable-grob.cc

diff --git a/lily/spaceable-grob.cc b/lily/spaceable-grob.cc
index 3d54aa372343d79699e3edb5e38feb7128539672..2088284412eca98598941367477a85e3145fb8e2 100644 (file)
--- a/lily/spaceable-grob.cc
+++ b/lily/spaceable-grob.cc
@@ -1,77 +1,104 @@
-/*   
-  spaceable-grob.cc --  implement Spaceable_grob
-  
+/*
+  spaceable-grob.cc -- implement Spaceable_grob
+
   source file of the GNU LilyPond music typesetter
-  
-  (c) 2000--2001 Han-Wen Nienhuys <hanwen@cs.uu.nl>
-  
- */
+
+  (c) 2000--2008 Han-Wen Nienhuys <hanwen@xs4all.nl>
+*/
 
 #include "spaceable-grob.hh"
-#include "grob.hh"
+
+#include <cstdio>
+
 #include "warn.hh"
+#include "spring.hh"
+#include "pointer-group-interface.hh"
+#include "grob.hh"
+#include "paper-column.hh"
+#include "international.hh"
 
 SCM
-Spaceable_grob::get_minimum_distances (Grob*me)
+Spaceable_grob::get_minimum_distances (Grob *me)
 {
-  return me->get_grob_property ("minimum-distances");
+  return me->get_object ("minimum-distances");
 }
 
 /*todo: merge code of spring & rod?
  */
 void
-Spaceable_grob::add_rod (Grob *me , Grob * p, Real d)
+Spaceable_grob::add_rod (Grob *me, Grob *p, Real d)
 {
+  //  printf ("rod %lf\n", d);
+  if (d < 0)
+    return;
+
+  if (isinf (d))
+    programming_error ("infinite rod");
+
   SCM mins = get_minimum_distances (me);
-  SCM newdist = gh_double2scm (d);
-  for (SCM s = mins; gh_pair_p (s); s = ly_cdr (s))
+  SCM newdist = scm_from_double (d);
+  for (SCM s = mins; scm_is_pair (s); s = scm_cdr (s))
     {
-      SCM dist = ly_car (s);
-      if (ly_car (dist) == p->self_scm ())
+      SCM dist = scm_car (s);
+      if (scm_car (dist) == p->self_scm ())
        {
-         gh_set_cdr_x (dist, scm_max (ly_cdr (dist),
-                                      newdist));
-         return ;
+         scm_set_cdr_x (dist, scm_max (scm_cdr (dist),
+                                       newdist));
+         return;
        }
     }
 
-  mins = gh_cons (gh_cons (p->self_scm (), newdist), mins);
-  me->set_grob_property ("minimum-distances", mins);
+  if (Paper_column::get_rank (p) < Paper_column::get_rank (me))
+    programming_error ("Adding reverse rod");
+
+  mins = scm_cons (scm_cons (p->self_scm (), newdist), mins);
+  me->set_object ("minimum-distances", mins);
 }
 
 void
-Spaceable_grob::add_spring (Grob*me, Grob * p, Real d, Real strength)
+Spaceable_grob::add_spring (Grob *me, Grob *other, Spring sp)
+{
+  SCM ideal = me->get_object ("ideal-distances");
+
+  ideal = scm_cons (scm_cons (sp.smobbed_copy (), other->self_scm ()), ideal);
+  me->set_object ("ideal-distances", ideal);
+}
+
+Spring
+Spaceable_grob::get_spring (Grob *this_col, Grob *next_col)
 {
-  SCM mins = me->get_grob_property ("ideal-distances");
-  
-  
-  SCM newdist= gh_double2scm (d);
-  for (SCM s = mins; gh_pair_p (s); s = ly_cdr (s))
+  Spring *spring = 0;
+
+  for (SCM s = this_col->get_object ("ideal-distances");
+       !spring && scm_is_pair (s);
+       s = scm_cdr (s))
     {
-      SCM dist = ly_car (s);
-      if (ly_car (dist) == p->self_scm ())
-       {
-         programming_error ("already have that spring");
-         return ;
-       }
+      if (scm_is_pair (scm_car (s))
+         && unsmob_grob (scm_cdar (s)) == next_col
+         && unsmob_spring (scm_caar (s)))
+       spring = unsmob_spring (scm_caar (s));
     }
-  SCM newstrength= gh_double2scm (strength);  
-  
-  mins = gh_cons (gh_cons (p->self_scm (), gh_cons (newdist, newstrength)), mins);
-  me->set_grob_property ("ideal-distances", mins);
-}
 
+  if (!spring)
+    programming_error (_f ("No spring between column %d and next one",
+                          Paper_column::get_rank (this_col)));
 
-void
-Spaceable_grob::remove_interface (Grob*me)
-{
-  me->remove_grob_property ("minimum-distances");
-  me->remove_grob_property ("ideal-distances");
+  return spring ? *spring : Spring ();
 }
 
 
-void
-Spaceable_grob::set_interface (Grob*me)
-{
-  me->set_interface (ly_symbol2scm ("spaceable-grob-interface"));
-}
+
+ADD_INTERFACE (Spaceable_grob,
+              "A layout object that takes part in the spacing problem.",
+
+              /* properties */
+              "allow-loose-spacing "
+              "ideal-distances "
+              "keep-inside-line "
+              "left-neighbors "
+              "measure-length "
+              "minimum-distances "
+              "right-neighbors "
+              "spacing-wishes "
+              );
+