* lily/accidental-placement.cc (split_accidentals): new function

[lilypond.git] / lily / separation-item.cc

diff --git a/lily/separation-item.cc b/lily/separation-item.cc
index 42043f5c14947863ae9f8a6185ffd780abf8ab10..f85866f4c8320d503dcec25bc210fc97af2b9024 100644 (file)
--- a/lily/separation-item.cc
+++ b/lily/separation-item.cc
@@ -1,50 +1,100 @@
 /*   
-  single-malt-grouping-item.cc --  implement Separation_item
+     separation-item.cc --  implement Separation_item
   
   source file of the GNU LilyPond music typesetter
   
-  (c) 1998--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+  (c) 1998--2002 Han-Wen Nienhuys <hanwen@cs.uu.nl>
   
  */
 
 #include "separation-item.hh"
 #include "paper-column.hh"
-#include "debug.hh"
+#include "warn.hh"
 #include "group-interface.hh"
+#include "accidental-placement.hh"
 
 void
-Separation_item::set_interface (Grob*s)
+Separation_item::add_item (Grob*s,Item* i)
 {
-  s->set_extent_callback (SCM_EOL, X_AXIS);
-  s->set_extent_callback (SCM_EOL, Y_AXIS);
+  assert (i);
+  Pointer_group_interface::add_grob (s, ly_symbol2scm ("elements"),i);
+  s->add_dependency (i);
 }
 
 void
-Separation_item::add_item (Grob*s,Item* i)
+Separation_item::add_conditional_item (Grob* me , Grob *e)
 {
-  assert (i);
-  Pointer_group_interface::add_element (s,"elements",i);
-  s->add_dependency (i);
+  Pointer_group_interface::add_grob (me, ly_symbol2scm ("conditional-elements"), e);
+}
+
+Interval
+Separation_item::conditional_width (Grob * me, Grob * left)
+{
+  Interval w = width (me);
+
+  Item *item = dynamic_cast<Item*> (me);
+  Paper_column * pc = item->column_l ();
+  
+  
+  for (SCM s =  me->get_grob_property ("conditional-elements"); gh_pair_p (s); s = ly_cdr (s))
+    {
+      SCM elt = ly_car (s);
+      if (!unsmob_grob (elt))
+       continue;
+      
+      Item *il = unsmob_item (elt);
+      if (pc != il->column_l ())
+       {
+         /* this shouldn't happen, but let's continue anyway. */
+         programming_error (_ ("Separation_item:  I've been drinking too much"));
+         continue;             /*UGH UGH*/ 
+       }
+
+      if (to_boolean (il->get_grob_property ("no-spacing-rods")))
+       {
+         continue;
+       }
+
+      if (Accidental_placement::has_interface (il))
+       {
+         w.unite (Accidental_placement::get_relevant_accidental_extent (il, pc, left));
+       }
+    }
+
+  SCM pad = me->get_grob_property ("padding");
+
+  if (gh_number_p (pad))
+    {
+      w[RIGHT] += gh_scm2double (pad)/2;
+      w[LEFT] -= gh_scm2double (pad)/2;    
+    }
+  return w;
 }
 
 Interval
-Separation_item::my_width (Grob *me)
+Separation_item::width (Grob *me)
 {
+  SCM sw = me->get_grob_property ("extent-X");
+  if (ly_number_pair_p (sw))
+    {
+      return ly_scm2interval (sw);
+    }
+
   Item *item = dynamic_cast<Item*> (me);
   Paper_column * pc = item->column_l ();
   Interval w;
   
-  for (SCM s =  me->get_grob_property ("elements"); gh_pair_p (s); s = gh_cdr (s))
+  for (SCM s =  me->get_grob_property ("elements"); gh_pair_p (s); s = ly_cdr (s))
     {
-      SCM elt = gh_car (s);
+      SCM elt = ly_car (s);
       if (!unsmob_grob (elt))
        continue;
 
-      Item *il = dynamic_cast<Item*> (unsmob_grob (elt));
+      Item *il = unsmob_item (elt);
       if (pc != il->column_l ())
        {
          /* this shouldn't happen, but let's continue anyway. */
-         programming_error (_("Separation_item:  I've been drinking too much"));
+         programming_error (_ ("Separation_item:  I've been drinking too much"));
          continue;             /*UGH UGH*/ 
        }
 
@@ -56,13 +106,35 @@ Separation_item::my_width (Grob *me)
       Interval iv (il->extent (pc, X_AXIS));
       if (!iv.empty_b ())
        {
-         w.unite  (iv);
+         w.unite (iv);
        }
     }
 
+  SCM pad = me->get_grob_property ("padding");
+
+  if (gh_number_p (pad))
+  {
+    w[RIGHT] += gh_scm2double (pad)/2;
+    w[LEFT] -= gh_scm2double (pad)/2;    
+  }
+
+
+  me->set_grob_property ("extent-X", ly_interval2scm (w));
+  
+  
   return w;
  // add this->offset_ ? this-> relative_coordinate ()? 
 }
 
 
 
+
+
+ADD_INTERFACE (Separation_item,"separation-item-interface",
+  "Item that computes widths to generate spacing rods.
+
+Calc dimensions for the Separating_group_spanner; this has to be
+an item to get dependencies correct.  It can't be an grob_group
+since these usually are in a different X_group
+",
+  "extent-X conditional-elements elements");