* lily/note-column.cc (dir): idem.

[lilypond.git] / lily / axis-group-engraver.cc

diff --git a/lily/axis-group-engraver.cc b/lily/axis-group-engraver.cc
index 50b76990e5ddc5ab8b3e6662aeec3e4cc2654451..105c92539712dfe86b90529c5c8916b64960522b 100644 (file)
--- a/lily/axis-group-engraver.cc
+++ b/lily/axis-group-engraver.cc
@@ -1,60 +1,130 @@
-/*   
-  axis-group-engraver.cc --  implement Axis_group_engraver
-  
+/*
+  axis-group-engraver.cc -- implement Axis_group_engraver
+
   source file of the GNU LilyPond music typesetter
-  
-  (c) 1999--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
- */
+
+  (c) 1999--2005 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+*/
 
 #include "axis-group-engraver.hh"
-#include "axis-group-spanner.hh"
-#include "paper-column.hh"
+
+#include "spanner.hh"
 #include "axis-group-interface.hh"
+#include "warn.hh"
+#include "context.hh"
+
+#include "translator.icc"
 
 Axis_group_engraver::Axis_group_engraver ()
 {
-  staffline_p_ = 0;
+  must_be_last_ = true;
+  staffline_ = 0;
 }
 
 void
-Axis_group_engraver::do_creation_processing ()
+Axis_group_engraver::process_music ()
 {
-  staffline_p_ = get_spanner_p ();
-  axis_group (staffline_p_).set_axes (Y_AXIS, Y_AXIS);
-  staffline_p_->set_bound(LEFT,get_staff_info().command_pcol_l ());
-  announce_element (Score_element_info (staffline_p_, 0));
+  if (!staffline_)
+    {
+      staffline_ = get_spanner ();
+      Grob *it = unsmob_grob (get_property ("currentCommandColumn"));
+      staffline_->set_bound (LEFT, it);
+    }
 }
 
-Axis_group_spanner*
-Axis_group_engraver::get_spanner_p () const
+Spanner *
+Axis_group_engraver::get_spanner ()
 {
-  return new Axis_group_spanner;
+  return make_spanner ("VerticalAxisGroup", SCM_EOL);
 }
+
+/*
+  TODO: should we junk minimumVerticalExtent/extraVerticalExtent ?
+*/
+
 void
-Axis_group_engraver::do_removal_processing ()
+Axis_group_engraver::finalize ()
 {
-  staffline_p_->set_bound(RIGHT,get_staff_info().command_pcol_l ());
-  typeset_element (staffline_p_);
-  staffline_p_ = 0;
+  if (!staffline_)
+    return;
+
+  String type = context ()->context_name ();
+  SCM dims = get_property ("verticalExtent");
+
+  if (is_number_pair (dims))
+    staffline_->set_extent (dims, Y_AXIS);
+
+  dims = get_property ("minimumVerticalExtent");
+  if (is_number_pair (dims))
+    staffline_->set_property ("minimum-Y-extent", dims);
+
+  dims = get_property ("extraVerticalExtent");
+  if (is_number_pair (dims))
+    staffline_->set_property ("extra-Y-extent", dims);
+
+  Grob *it = unsmob_grob (get_property ("currentCommandColumn"));
+
+  staffline_->set_bound (RIGHT, it);
+
+  staffline_ = 0;
 }
 
 void
-Axis_group_engraver::acknowledge_element (Score_element_info i)
+Axis_group_engraver::acknowledge_grob (Grob_info i)
 {
-  elts_.push (i.elem_l_);
+  elts_.push (i.grob ());
 }
 
+/*
+  maybe should check if our parent is set, because we now get a
+  cyclic parent relationship if we have two Axis_group_engravers in
+  the context.  */
 void
 Axis_group_engraver::process_acknowledged ()
 {
-  /* UGH UGH UGH */
-  for (int i=0; i < elts_.size (); i++)
+  if (!staffline_)
+    return;
+
+  for (int i = 0; i < elts_.size (); i++)
     {
-      Score_element *par = elts_[i]->parent_l (Y_AXIS);
-      if (!par || !axis_group (par).has_interface_b ())
-       axis_group (staffline_p_).add_element (elts_[i]);
+      if (!unsmob_grob (elts_[i]->get_object ("axis-group-parent-Y")))
+       {
+         if (staffline_->get_parent (Y_AXIS)
+             && staffline_->get_parent (Y_AXIS) == elts_[i])
+           {
+             staffline_->warning (_ ("Axis_group_engraver: vertical group already has a parent"));
+             staffline_->warning (_ ("are there two Axis_group_engravers?"));
+             staffline_->warning (_ ("removing this vertical group"));
+             staffline_->suicide ();
+             staffline_ = 0;
+             break;
+           }
+         else if (elts_[i]->is_empty (Y_AXIS))
+           {
+             /*
+               We have to do _something_, otherwise staff objects will
+               end up with System as parent.
+
+             */
+             elts_[i]->set_parent (staffline_, Y_AXIS);
+           }
+         else
+           add_element (elts_[i]);
+       }
     }
   elts_.clear ();
 }
 
-ADD_THIS_TRANSLATOR(Axis_group_engraver);
+void
+Axis_group_engraver::add_element (Grob *e)
+{
+  Axis_group_interface::add_element (staffline_, e);
+}
+
+ADD_TRANSLATOR (Axis_group_engraver,
+               /* descr */ "Group all objects created in this context in a VerticalAxisGroup spanner.",
+               /* creats*/ "VerticalAxisGroup",
+               /* accepts */ "",
+               /* acks  */ "grob-interface",
+               /* reads */ "verticalExtent minimumVerticalExtent extraVerticalExtent",
+               /* write */ "");