X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fvertical-align-engraver.cc;h=907e85077028de61a3fb32ae2ea62206bed4bda5;hb=087a4bf794b39cbfd99eb032183101013386f475;hp=2c2d48d9ad901edb1cc997a92a11c31f8b01a02a;hpb=cd1c15ac06a3b427e6b4d22061939092751e4a1c;p=lilypond.git

diff --git a/lily/vertical-align-engraver.cc b/lily/vertical-align-engraver.cc
index 2c2d48d9ad..907e850770 100644
--- a/lily/vertical-align-engraver.cc
+++ b/lily/vertical-align-engraver.cc
@@ -1,83 +1,138 @@
 /*
-  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--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+  (c) 1997--2005 Han-Wen Nienhuys <hanwen@cs.uu.nl>
 */
-#include "translator-group.hh"
-#include "axis-group-engraver.hh"
+
+#include "context.hh"
 #include "paper-column.hh"
-#include "vertical-align-engraver.hh"
-#include "axis-align-spanner.hh"
-#include "axis-group-spanner.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 (Grob_info) const;
+  SCM id_to_group_hashtab_;
 
-Vertical_align_engraver::Vertical_align_engraver()
+public:
+  TRANSLATOR_DECLARATIONS (Vertical_align_engraver);
+  DECLARE_ACKNOWLEDGER (axis_group);
+
+protected:
+  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,
+		"Catch groups (staffs, lyrics lines, etc.) and stack "
+		"them vertically.",
+		/* create */ "VerticalAlignment",
+		/* accept */ "",
+		/* read */ "",
+		/* write */ "");
+
+Vertical_align_engraver::Vertical_align_engraver ()
 {
-  valign_p_ =0;
+  valign_ = 0;
+  id_to_group_hashtab_ = SCM_EOL;
 }
 
 void
-Vertical_align_engraver::do_creation_processing()
+Vertical_align_engraver::derived_mark () const
 {
-  valign_p_ =new Axis_align_spanner;
-  valign_p_->set_axis (Y_AXIS);
-  valign_p_->set_elt_property ("stacking-dir",  gh_int2scm (DOWN));
-  
-  valign_p_->set_bound(LEFT,get_staff_info().command_pcol_l ());
-  announce_element (Score_element_info (valign_p_ , 0));
+  scm_gc_mark (id_to_group_hashtab_);
 }
 
 void
-Vertical_align_engraver::do_removal_processing()
+Vertical_align_engraver::initialize ()
 {
-  SCM min = get_property ("maxVerticalAlign");
-  SCM max = get_property ("minVerticalAlign");
-
-  if (gh_number_p (min) || gh_number_p (max))
-  {
-    min = gh_number_p (min) ? min : gh_double2scm (0.0);
-    max = gh_number_p (max) ? max : gh_double2scm (infinity_f);    
-    
-    valign_p_->set_elt_property ("threshold",
-				 gh_cons (min,max));
-  }
-  valign_p_->set_bound(RIGHT,get_staff_info().command_pcol_l ());
-  typeset_element (valign_p_);
-  valign_p_ =0;
+  id_to_group_hashtab_ = scm_c_make_hash_table (11);
 }
 
-
-bool
-Vertical_align_engraver::qualifies_b (Score_element_info i) const
+void
+Vertical_align_engraver::process_music ()
 {
-  int sz = i.origin_trans_l_arr ((Translator*)this).size()  ;
+  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;
+    }
+}
 
-  Axis_group_interface agi(i.elem_l_);
+bool
+Vertical_align_engraver::qualifies (Grob_info i) const
+{
+  int sz = i.origin_contexts ((Translator *)this).size ();
 
-  return sz > 1 && agi.has_interface_b ()
-    && !i.elem_l_->parent_l (Y_AXIS) && agi.axis_b (Y_AXIS);
+  return sz > 0 && Axis_group_interface::has_interface (i.grob ())
+    && !i.grob ()->get_parent (Y_AXIS)
+    && Axis_group_interface::has_axis (i.grob (), Y_AXIS);
 }
 
 void
-Vertical_align_engraver::acknowledge_element (Score_element_info i)
+Vertical_align_engraver::acknowledge_axis_group (Grob_info i)
 {
-  if (qualifies_b (i))
-    {
-      valign_p_->add_element (i.elem_l_);
-    }
-  /*
-    ? huh
-   */
-  else if (dynamic_cast<Span_bar*>(i.elem_l_) && i.origin_trans_l_arr (this).size ())
+  if (qualifies (i))
     {
-      i.elem_l_->add_dependency (valign_p_);
-    }  
-}
+      String id = i.context ()->id_string ();
+
+      scm_hash_set_x (id_to_group_hashtab_, scm_makfrom0str (id.to_str0 ()),
+		      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);
 
+      Align_interface::add_element (valign_, i.grob ());
 
-ADD_THIS_TRANSLATOR(Vertical_align_engraver);
+      if (before_grob || after_grob)
+	{
+	  Grob_array *ga = unsmob_grob_array (valign_->get_object ("elements"));
+	  Link_array<Grob> &arr = ga->array_reference ();
+
+	  Grob *added = arr.pop ();
+	  for (int i = 0; i < arr.size (); i++)
+	    {
+	      if (arr[i] == before_grob)
+		{
+		  arr.insert (added, i);
+		  break;
+		}
+	      else if (arr[i] == after_grob)
+		{
+		  arr.insert (added, i + 1);
+		  break;
+		}
+	    }
+	}
+    }
+}