* mf/merge.pe.in: Set font names, version, license GPL.

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

diff --git a/lily/script-column.cc b/lily/script-column.cc
index f67907c8695258398039a4205a9014e73f843907..311f5cbb7c4f264e19790b4c2cd99607c5de6128 100644 (file)
--- a/lily/script-column.cc
+++ b/lily/script-column.cc
@@ -1,113 +1,99 @@
-/*
-  script-column.cc -- implement Script_column
-
+/*   
+  script-column.cc --  implement Script_column
+  
   source file of the GNU LilyPond music typesetter
-
-  (c)  1997--1998 Han-Wen Nienhuys <hanwen@cs.uu.nl>
-*/
+  
+  (c) 1999--2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+  
+ */
 
 #include "script-column.hh"
-#include "debug.hh"
-#include "script.hh"
-#include "note-head.hh"
-#include "stem.hh"
-#include "general-script-def.hh"
-
-IMPLEMENT_IS_TYPE_B1(Script_column,Horizontal_vertical_group_item);
 
+#include "side-position-interface.hh"
+#include "warn.hh"
+#include "group-interface.hh"
 
 void
-Script_column::add_script (Script*s_l)
+Script_column::add_staff_sided (Grob *me, Item *i)
 {
-  script_l_arr_.push (s_l);
-  add_dependency (s_l);
-  add_element (s_l);
-}
-
+  SCM p = i->get_property ("script-priority");
+  if (!scm_is_number (p))
+    return;
 
-void
-Script_column::do_print() const
-{
-#ifndef NPRINT
-  DOUT << "scripts: " << script_l_arr_.size() << '\n'; 
-#endif
+  Pointer_group_interface::add_grob (me, ly_symbol2scm ("scripts"),i);
+  
+  me->add_dependency (i);
 }
 
-static int
-idx (bool inside, int dir)
+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.")
 {
-  int j = (dir+1);
-  if (!inside)
-    j ++;
-  return j;
+  Grob *i1 = unsmob_grob (a);
+  Grob *i2 = unsmob_grob (b);
+
+  SCM p1 = i1->get_property ("script-priority");
+  SCM p2 = i2->get_property ("script-priority");
+
+  return scm_to_int (p1) < scm_to_int (p2) ? SCM_BOOL_T : SCM_BOOL_F;
 }
 
-void
-Script_column::do_pre_processing()
+MAKE_SCHEME_CALLBACK (Script_column, before_line_breaking, 1);
+SCM
+Script_column::before_line_breaking (SCM smob)
 {
-  if (!script_l_arr_.size()) 
-    return;
+  Grob* me = unsmob_grob (smob);
+  Drul_array<SCM> scripts (SCM_EOL, SCM_EOL);
+  Link_array<Grob> staff_sided;
   
-  /* up+inside, up+outside, down+inside, down+outside */
-  Array<Script*> placed_l_arr_a[4];
-  for (int i=0; i < script_l_arr_.size(); i++) 
+  for (SCM s = me->get_property ("scripts"); scm_is_pair (s); s = scm_cdr (s))
     {
-      Script*s_l = script_l_arr_[i];
-      placed_l_arr_a[idx (s_l->specs_p_->inside_b(),
-                         s_l->dir_) ].push (s_l);
-    }
-  
-  for (int j =0; j <4; j++) 
-    {
-      placed_l_arr_a[j].sort (Script::compare);
-    }
-
+      Grob *sc = unsmob_grob (scm_car (s));
 
-  for (int j =0; j < 4; j++) 
-    {
-      if (placed_l_arr_a[j].size())
-       for (int i=0; i  < support_l_arr_.size(); i++)
-         placed_l_arr_a[j][0]->add_support (support_l_arr_[i]);
+      /*
+       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);
     }
   
-  Item * support_l=0;
-  int j = 0;
-  for (; j < 2; j++) 
+  for (int i = 0; i < staff_sided.size (); i++)
     {
-      for (int i=0; i < placed_l_arr_a[j].size(); i++) 
+      Grob* g = staff_sided[i];
+      Direction d = Side_position_interface::get_direction (g);
+      if (!d)
        {
-         if (support_l)
-           placed_l_arr_a[j][i]->add_support (support_l);
-         support_l = placed_l_arr_a[j][i];
+         programming_error ( "No direction for script?");
+         d = DOWN;
+         g->set_property ("direction", scm_int2num (d));
        }
+      
+      scripts[d] = scm_cons (g->self_scm (), scripts[d]);
     }
-  support_l = 0;
-  for (; j < 4; j++) 
+
+  Direction d = DOWN;
+  do
     {
-      for (int i=0; i < placed_l_arr_a[j].size(); i++) 
+      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))
        {
-         if (support_l)
-           placed_l_arr_a[j][i]->add_support (support_l);
-         support_l = placed_l_arr_a[j][i];
+         Grob *g = unsmob_grob (scm_car (s));
+         if (last)
+           Side_position_interface::add_support (g,last);
+         
+         last = g;
        }
-    }
-}
+      
+    } while (flip (&d) != DOWN);
 
-
-void
-Script_column::add_support (Item*i_l)
-{
-  support_l_arr_.push (i_l);
-  add_dependency (i_l);
-  add_element (i_l);
+  return SCM_UNSPECIFIED;
 }
 
-void
-Script_column::do_substitute_dependency (Score_element*o,Score_element*n)
-{
-  if (o->access_Item ()) 
-    {
-      script_l_arr_.substitute ((Script*)o->access_Item (),(Script*) (n?n->access_Item ():0));
-      support_l_arr_.substitute (o->access_Item (), (n?n->access_Item ():0));
-    }
-}
+ADD_INTERFACE (Script_column,"script-column-interface",
+              "An interface that sorts scripts "
+              "according to their @code{script-priority}",
+              "");