Issue 5167/6: Changes: show \markup xxx = ... \etc assignments

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

diff --git a/lily/vertical-align-engraver.cc b/lily/vertical-align-engraver.cc
index 97f14fdce03b0e6f88aecac0be7ccc4491e0938f..921b35a47113ace9436136ed08664610127af9fc 100644 (file)
--- a/lily/vertical-align-engraver.cc
+++ b/lily/vertical-align-engraver.cc
@@ -1,7 +1,7 @@
 /*
   This file is part of LilyPond, the GNU music typesetter.
 
-  Copyright (C) 1997--2012 Han-Wen Nienhuys <hanwen@xs4all.nl>
+  Copyright (C) 1997--2015 Han-Wen Nienhuys <hanwen@xs4all.nl>
 
   LilyPond is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
@@ -22,6 +22,7 @@
 #include "align-interface.hh"
 #include "axis-group-interface.hh"
 #include "engraver.hh"
+#include "international.hh"
 #include "spanner.hh"
 #include "pointer-group-interface.hh"
 #include "grob-array.hh"
@@ -36,7 +37,7 @@ class Vertical_align_engraver : public Engraver
 
 public:
   TRANSLATOR_DECLARATIONS (Vertical_align_engraver);
-  DECLARE_ACKNOWLEDGER (axis_group);
+  void acknowledge_axis_group (Grob_info);
 
 protected:
   virtual void derived_mark () const;
@@ -47,7 +48,12 @@ protected:
   bool top_level_;
 };
 
-ADD_ACKNOWLEDGER (Vertical_align_engraver, axis_group);
+void
+Vertical_align_engraver::boot ()
+{
+  ADD_ACKNOWLEDGER (Vertical_align_engraver, axis_group);
+}
+
 ADD_TRANSLATOR (Vertical_align_engraver,
                 /* doc */
                 "Catch groups (staves, lyrics lines, etc.) and stack them"
@@ -58,13 +64,15 @@ ADD_TRANSLATOR (Vertical_align_engraver,
 
                 /* read */
                 "alignAboveContext "
-                "alignBelowContext ",
+                "alignBelowContext "
+                "hasAxisGroup ",
 
                 /* write */
                 ""
                );
 
-Vertical_align_engraver::Vertical_align_engraver ()
+Vertical_align_engraver::Vertical_align_engraver (Context *c)
+  : Engraver (c)
 {
   valign_ = 0;
   id_to_group_hashtab_ = SCM_EOL;
@@ -86,12 +94,19 @@ Vertical_align_engraver::initialize ()
 void
 Vertical_align_engraver::process_music ()
 {
-  if (!valign_)
+  if (!valign_ && !scm_is_null (id_to_group_hashtab_))
     {
+      if (to_boolean (get_property ("hasAxisGroup")))
+        {
+          warning (_ ("Ignoring Vertical_align_engraver in VerticalAxisGroup"));
+          id_to_group_hashtab_ = SCM_EOL;
+          return;
+        }
+      
       top_level_ = to_boolean (get_property ("topLevelAlignment"));
 
       valign_ = make_spanner (top_level_ ? "VerticalAlignment" : "StaffGrouper", SCM_EOL);
-      valign_->set_bound (LEFT, unsmob_grob (get_property ("currentCommandColumn")));
+      valign_->set_bound (LEFT, unsmob<Grob> (get_property ("currentCommandColumn")));
       Align_interface::set_ordered (valign_);
     }
 }
@@ -101,7 +116,7 @@ Vertical_align_engraver::finalize ()
 {
   if (valign_)
     {
-      valign_->set_bound (RIGHT, unsmob_grob (get_property ("currentCommandColumn")));
+      valign_->set_bound (RIGHT, unsmob<Grob> (get_property ("currentCommandColumn")));
       valign_ = 0;
     }
 }
@@ -111,7 +126,7 @@ Vertical_align_engraver::qualifies (Grob_info i) const
 {
   int sz = i.origin_contexts ((Translator *)this).size ();
 
-  return sz > 0 && Axis_group_interface::has_interface (i.grob ())
+  return sz > 0 && has_interface<Axis_group_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);
@@ -120,6 +135,9 @@ Vertical_align_engraver::qualifies (Grob_info i) const
 void
 Vertical_align_engraver::acknowledge_axis_group (Grob_info i)
 {
+  if (scm_is_null (id_to_group_hashtab_))
+    return;
+
   if (top_level_ && qualifies (i))
     {
       string id = i.context ()->id_string ();
@@ -133,14 +151,14 @@ Vertical_align_engraver::acknowledge_axis_group (Grob_info i)
       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);
+      Grob *before_grob = unsmob<Grob> (before);
+      Grob *after_grob = unsmob<Grob> (after);
 
       Align_interface::add_element (valign_, i.grob ());
 
       if (before_grob || after_grob)
         {
-          Grob_array *ga = unsmob_grob_array (valign_->get_object ("elements"));
+          Grob_array *ga = unsmob<Grob_array> (valign_->get_object ("elements"));
           vector<Grob *> &arr = ga->array_reference ();
 
           Grob *added = arr.back ();
@@ -170,7 +188,7 @@ Vertical_align_engraver::acknowledge_axis_group (Grob_info i)
   else if (qualifies (i))
     {
       Pointer_group_interface::add_grob (valign_, ly_symbol2scm ("elements"), i.grob ());
-      if (!unsmob_grob (i.grob ()->get_object ("staff-grouper")))
+      if (!unsmob<Grob> (i.grob ()->get_object ("staff-grouper")))
         i.grob ()->set_object ("staff-grouper", valign_->self_scm ());
     }
 }