''

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

diff --git a/lily/paper-column.cc b/lily/paper-column.cc
index 789a9cfa7362f83c2b9ac2983b3af3209cdc149d..e68395807dff33e84c7d4e496ef4bb5cbdce0aa6 100644 (file)
--- a/lily/paper-column.cc
+++ b/lily/paper-column.cc
@@ -3,7 +3,7 @@
 
   source file of the GNU LilyPond music typesetter
 
-  (c)  1997--2001 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+  (c)  1997--2002 Han-Wen Nienhuys <hanwen@cs.uu.nl>
 */
 
 #include "moment.hh"
@@ -18,9 +18,12 @@
 #include "font-interface.hh"
 
 
-/*
-  Paper_columns form the top-most item parent. (The Paper_columns X
-  parent is Line_of_score, which is a spanner.)
+
+
+
+ADD_INTERFACE (Paper_column, "paper-column-interface",
+  "  Paper_columns form the top-most item parent. (The Paper_columns X
+  parent is System, which is a spanner.)
 
   Paper_columns form the units for the spacing engine. They are
   numbered, the first (leftmost) is column 0. Numbering happens before
@@ -29,8 +32,14 @@
   Since many columns go unused, you should only use the rank field to
   get ordering information.  Two adjacent columns may have
   non-adjacent numbers.
-  
- */
+
+  Don't be confused by right-items: each spacing wish can also contain
+  a number of items, with which a spacing constraint may be kept. It's
+  a little baroque, but it might come in handy later on?
+
+",
+  "between-cols between-system-string when bounded-by-me shortest-playing-duration shortest-starter-duration");
+
 
 void
 Paper_column::do_break_processing ()
@@ -45,7 +54,7 @@ Paper_column::rank_i (Grob*me)
   return dynamic_cast<Paper_column*> (me)->rank_i_;
 }
 
-Line_of_score*
+System*
 Paper_column::line_l () const
 {
   return line_l_;
@@ -60,10 +69,6 @@ Paper_column::column_l () const
 Paper_column::Paper_column (SCM l)
   : Item (l)           // guh.?
 {
-  Axis_group_interface::set_interface (this);
-  Axis_group_interface::set_axes (this, X_AXIS, X_AXIS);
-  Spaceable_grob::set_interface (this);
-
   line_l_=0;
   rank_i_ = -1;
 }