* lily/modified-font-metric.cc (text_dimension): try

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

diff --git a/lily/script-column.cc b/lily/script-column.cc
index 7d047b97f5772a8cd3adb61882d885da63fa4e39..311f5cbb7c4f264e19790b4c2cd99607c5de6128 100644 (file)
--- a/lily/script-column.cc
+++ b/lily/script-column.cc
@@ -1,77 +1,99 @@
 /*   
-  g-script-column.cc --  implement Script_column
+  script-column.cc --  implement Script_column
   
   source file of the GNU LilyPond music typesetter
   
-  (c) 1999--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+  (c) 1999--2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
   
  */
+
 #include "script-column.hh"
+
 #include "side-position-interface.hh"
-#include "dimension-cache.hh"
+#include "warn.hh"
 #include "group-interface.hh"
 
 void
-Script_column::add_staff_sided (Score_element *me, Item *i)
+Script_column::add_staff_sided (Grob *me, Item *i)
 {
-  SCM p = i->get_elt_property ("script-priority");
-  if (!gh_number_p (p))
+  SCM p = i->get_property ("script-priority");
+  if (!scm_is_number (p))
     return;
 
-  Pointer_group_interface gi (me, "scripts");
-  gi.add_element (i);
+  Pointer_group_interface::add_grob (me, ly_symbol2scm ("scripts"),i);
   
   me->add_dependency (i);
 }
 
-static int
-staff_side_compare (Score_element * const &i1,
-                   Score_element * const &i2)
+LY_DEFINE (ly_grob_script_priority_less, "ly:grob-script-priority-less",
+         2, 0, 0, (SCM a, SCM b),
+         "Compare two grobs by script priority. For internal use.")
 {
-  SCM p1 = i1->get_elt_property ("script-priority");
-  SCM p2 = i2->get_elt_property ("script-priority");
+  Grob *i1 = unsmob_grob (a);
+  Grob *i2 = unsmob_grob (b);
 
-  return gh_scm2int (p1) - gh_scm2int (p2);
-}
+  SCM p1 = i1->get_property ("script-priority");
+  SCM p2 = i2->get_property ("script-priority");
 
-MAKE_SCHEME_SCORE_ELEMENT_CALLBACK(Script_column,before_line_breaking);
+  return scm_to_int (p1) < scm_to_int (p2) ? SCM_BOOL_T : SCM_BOOL_F;
+}
 
+MAKE_SCHEME_CALLBACK (Script_column, before_line_breaking, 1);
 SCM
 Script_column::before_line_breaking (SCM smob)
 {
-  Score_element* me = unsmob_element (smob);
-  Drul_array<Link_array<Score_element> > arrs;
-  Link_array<Score_element> staff_sided 
-    = Pointer_group_interface__extract_elements (me, (Score_element*)0, "scripts");
-                                    
-                                    
-  for (int i=0; i < staff_sided.size (); i++)
+  Grob* me = unsmob_grob (smob);
+  Drul_array<SCM> scripts (SCM_EOL, SCM_EOL);
+  Link_array<Grob> staff_sided;
+  
+  for (SCM s = me->get_property ("scripts"); scm_is_pair (s); s = scm_cdr (s))
     {
-      Side_position_interface st (staff_sided[i]);
-      arrs[st.get_direction ()].push (staff_sided[i]);
+      Grob *sc = unsmob_grob (scm_car (s));
+
+      /*
+       Don't want to consider scripts horizontally next to notes.
+       */
+      if (!sc->has_offset_callback (Side_position_interface::aligned_side_proc,
+                                   X_AXIS))
+       staff_sided.push (sc);
+    }
+  
+  for (int i = 0; i < staff_sided.size (); i++)
+    {
+      Grob* g = staff_sided[i];
+      Direction d = Side_position_interface::get_direction (g);
+      if (!d)
+       {
+         programming_error ( "No direction for script?");
+         d = DOWN;
+         g->set_property ("direction", scm_int2num (d));
+       }
+      
+      scripts[d] = scm_cons (g->self_scm (), scripts[d]);
     }
 
   Direction d = DOWN;
-  do {
-    Link_array<Score_element> &arr(arrs[d]);
-    
-    arr.sort (staff_side_compare);
-
-    Score_element * last = 0;
-    for (int i=0; i < arr.size (); i++)
-      {
-       Side_position_interface s (arr[i]);
-       if (last)
-         {
-           s.add_support (last);
-         }
-           
-       arr[i]->remove_elt_property ("script-priority");
-       last = arr[i];
-      }
-    
-  } while (flip (&d) != DOWN);
+  do
+    {
+      SCM ss = scm_reverse_x (scripts[d], SCM_EOL);
+      ss = scm_stable_sort_x (ss, ly_grob_script_priority_less_proc);
+      
+      Grob * last = 0;
+      for (SCM s = ss; scm_is_pair (s); s = scm_cdr (s))
+       {
+         Grob *g = unsmob_grob (scm_car (s));
+         if (last)
+           Side_position_interface::add_support (g,last);
+         
+         last = g;
+       }
+      
+    } while (flip (&d) != DOWN);
 
-  return SCM_UNDEFINED;
+  return SCM_UNSPECIFIED;
 }
 
+ADD_INTERFACE (Script_column,"script-column-interface",
+              "An interface that sorts scripts "
+              "according to their @code{script-priority}",
+              "");