Run `make grand-replace'.

[lilypond.git] / lily / vertical-align-engraver.cc

diff --git a/lily/vertical-align-engraver.cc b/lily/vertical-align-engraver.cc
index a607a32f3c6b8688851e8467cbf17a089bef1161..0d07a509dfbc864db37dffe53ed6ff8e7a6d5fac 100644 (file)
--- a/lily/vertical-align-engraver.cc
+++ b/lily/vertical-align-engraver.cc
@@ -1,75 +1,148 @@
 /*
-  vertical-align-grav.cc -- implement Vertical_align_engraver
+  vertical-align-engraver.cc -- implement Vertical_align_engraver
 
   source file of the GNU LilyPond music typesetter
 
-  (c)  1997--2002 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+  (c) 1997--2008 Han-Wen Nienhuys <hanwen@xs4all.nl>
 */
-#include "translator-group.hh"
+
+#include "context.hh"
 #include "paper-column.hh"
 #include "align-interface.hh"
 #include "span-bar.hh"
 #include "axis-group-interface.hh"
 #include "engraver.hh"
 #include "spanner.hh"
+#include "pointer-group-interface.hh"
+#include "grob-array.hh"
+
+#include "translator.icc"
 
 class Vertical_align_engraver : public Engraver
 {
-  Spanner * valign_;
-  bool qualifies_b (Grob_info) const;  
+  Spanner *valign_;
+  bool qualifies (Grob_info) const;
+  SCM id_to_group_hashtab_;
+
 public:
-  TRANSLATOR_DECLARATIONS(Vertical_align_engraver);
+  TRANSLATOR_DECLARATIONS (Vertical_align_engraver);
+  DECLARE_ACKNOWLEDGER (axis_group);
+
 protected:
-  virtual void acknowledge_grob (Grob_info);
-  virtual void initialize ();
+  virtual void derived_mark () const;
+  void process_music ();
   virtual void finalize ();
+  virtual void initialize ();
 };
 
+ADD_ACKNOWLEDGER (Vertical_align_engraver, axis_group);
+ADD_TRANSLATOR (Vertical_align_engraver,
+               /* doc */
+               "Catch groups (staves, lyrics lines, etc.) and stack them"
+               " vertically.",
+
+               /* create */
+               "VerticalAlignment ",
+
+               /* read */
+               "alignAboveContext "
+               "alignBelowContext ",
+
+               /* write */
+               ""
+               );
+
 Vertical_align_engraver::Vertical_align_engraver ()
 {
-  valign_ =0;
+  valign_ = 0;
+  id_to_group_hashtab_ = SCM_EOL;
+}
+
+void
+Vertical_align_engraver::derived_mark () const
+{
+  scm_gc_mark (id_to_group_hashtab_);
 }
 
 void
 Vertical_align_engraver::initialize ()
 {
-  valign_ =new Spanner (get_property ("VerticalAlignment"));
-  valign_->set_bound (LEFT,unsmob_grob (get_property ("currentCommandColumn")));
-  announce_grob(valign_ , SCM_EOL);
+  id_to_group_hashtab_ = scm_c_make_hash_table (11);
 }
 
 void
-Vertical_align_engraver::finalize ()
+Vertical_align_engraver::process_music ()
 {
-  valign_->set_bound (RIGHT,unsmob_grob (get_property ("currentCommandColumn")));
-  typeset_grob (valign_);
-  valign_ =0;
+  if (!valign_)
+    {
+      valign_ = make_spanner ("VerticalAlignment", SCM_EOL);
+      valign_->set_bound (LEFT, unsmob_grob (get_property ("currentCommandColumn")));
+      Align_interface::set_ordered (valign_);
+    }
 }
 
+void
+Vertical_align_engraver::finalize ()
+{
+  if (valign_)
+    {
+      valign_->set_bound (RIGHT, unsmob_grob (get_property ("currentCommandColumn")));
+      valign_ = 0;
+    }
+}
 
 bool
-Vertical_align_engraver::qualifies_b (Grob_info i) const
+Vertical_align_engraver::qualifies (Grob_info i) const
 {
-  int sz = i.origin_transes ((Translator*)this).size ()  ;
+  int sz = i.origin_contexts ((Translator *)this).size ();
 
-  return sz > 1 && Axis_group_interface::has_interface (i.grob_)
-    && !i.grob_->get_parent (Y_AXIS) && Axis_group_interface::axis_b (i.grob_, Y_AXIS);
+  return sz > 0 && Axis_group_interface::has_interface (i.grob ())
+    && !i.grob ()->get_parent (Y_AXIS)
+    && !to_boolean (i.grob ()->get_property ("no-alignment"))
+    && Axis_group_interface::has_axis (i.grob (), Y_AXIS);
 }
 
 void
-Vertical_align_engraver::acknowledge_grob (Grob_info i)
+Vertical_align_engraver::acknowledge_axis_group (Grob_info i)
 {
-  if (qualifies_b (i))
+  if (qualifies (i))
     {
-      Align_interface::add_element (valign_,i.grob_, get_property ("verticalAlignmentChildCallback"));
-    }
-}
+      string id = i.context ()->id_string ();
+
+      scm_hash_set_x (id_to_group_hashtab_, ly_string2scm (id),
+                     i.grob ()->self_scm ());
+
+      SCM before_id = i.context ()->get_property ("alignAboveContext");
+      SCM after_id = i.context ()->get_property ("alignBelowContext");
+
+      SCM before = scm_hash_ref (id_to_group_hashtab_, before_id, SCM_BOOL_F);
+      SCM after = scm_hash_ref (id_to_group_hashtab_, after_id, SCM_BOOL_F);
 
+      Grob *before_grob = unsmob_grob (before);
+      Grob *after_grob = unsmob_grob (after);
 
-ENTER_DESCRIPTION(Vertical_align_engraver,
-/* descr */       "Catch Vertical axis groups and stack them.",
-/* creats*/       "VerticalAlignment",
-/* accepts */     "general-music",
-/* acks  */      "axis-group-interface",
-/* reads */       "",
-/* write */       "");
+      Align_interface::add_element (valign_, i.grob ());
+       
+      if (before_grob || after_grob)
+       {
+         Grob_array *ga = unsmob_grob_array (valign_->get_object ("elements"));
+         vector<Grob*> &arr = ga->array_reference ();
+
+         Grob *added = arr.back ();
+         arr.pop_back ();
+         for (vsize i = 0; i < arr.size (); i++)
+           {
+             if (arr[i] == before_grob)
+               {
+                 arr.insert (arr.begin () + i, added);
+                 break;
+               }
+             else if (arr[i] == after_grob)
+               {
+                 arr.insert (arr.begin () + i + 1, added);
+                 break;
+               }
+           }
+       }
+    }
+}