X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fself-aligment-interface.cc;h=b41e89ff2578ea931bea36afcf5db1c925802ccf;hb=2e2d7ec04e8e5624da6fd1e9bbb3f34f2545a76b;hp=0ba251a6f3eec10b9c0839a78a77a56c03053691;hpb=4b599e41de673372c7127b68c750ef4aadbfd9f2;p=lilypond.git

diff --git a/lily/self-aligment-interface.cc b/lily/self-aligment-interface.cc
index 0ba251a6f3..b41e89ff25 100644
--- a/lily/self-aligment-interface.cc
+++ b/lily/self-aligment-interface.cc
@@ -3,28 +3,38 @@
  
   source file of the GNU LilyPond music typesetter
 
-  (c) 2004--2005 Han-Wen Nienhuys <hanwen@xs4all.nl>
+  (c) 2004--2009 Han-Wen Nienhuys <hanwen@xs4all.nl>
 */
 
 #include "self-alignment-interface.hh"
+
 #include "warn.hh"
+#include "paper-column.hh"
+#include "grob.hh"
 
 MAKE_SCHEME_CALLBACK (Self_alignment_interface, y_aligned_on_self, 1);
 SCM
 Self_alignment_interface::y_aligned_on_self (SCM element)
 {
-  return aligned_on_self (unsmob_grob (element), Y_AXIS);
+  return aligned_on_self (unsmob_grob (element), Y_AXIS, false, 0, 0);
 }
 
 MAKE_SCHEME_CALLBACK (Self_alignment_interface, x_aligned_on_self, 1);
 SCM
 Self_alignment_interface::x_aligned_on_self (SCM element)
 {
-  return aligned_on_self (unsmob_grob (element), X_AXIS);
+  return aligned_on_self (unsmob_grob (element), X_AXIS, false, 0, 0);
+}
+
+MAKE_SCHEME_CALLBACK (Self_alignment_interface, pure_y_aligned_on_self, 3);
+SCM
+Self_alignment_interface::pure_y_aligned_on_self (SCM smob, SCM start, SCM end)
+{
+  return aligned_on_self (unsmob_grob (smob), Y_AXIS, true, robust_scm2int (start, 0), robust_scm2int (end, INT_MAX));
 }
 
 SCM
-Self_alignment_interface::aligned_on_self (Grob *me, Axis a)
+Self_alignment_interface::aligned_on_self (Grob *me, Axis a, bool pure, int start, int end)
 {
   SCM sym = (a == X_AXIS) ? ly_symbol2scm ("self-alignment-X")
     : ly_symbol2scm ("self-alignment-Y");
@@ -32,9 +42,9 @@ Self_alignment_interface::aligned_on_self (Grob *me, Axis a)
   SCM align (me->internal_get_property (sym));
   if (scm_is_number (align))
     {
-      Interval ext (me->extent (me, a));
+      Interval ext (me->maybe_pure_extent (me, a, pure, start, end));
       if (ext.is_empty ())
-	programming_error ("can't align on self: empty element");
+	programming_error ("cannot align on self: empty element");
       else
 	return scm_from_double (- ext.linear_combination (scm_to_double (align)));
     }
@@ -91,6 +101,9 @@ SCM
 Self_alignment_interface::aligned_on_parent (Grob *me, Axis a)
 {
   Grob *him = me->get_parent (a);
+  if (Paper_column::has_interface (him))
+    return scm_from_double (0.0);
+    
   Interval he = him->extent (him, a);
 
   SCM sym = (a == X_AXIS) ? ly_symbol2scm ("self-alignment-X")
@@ -105,7 +118,7 @@ Self_alignment_interface::aligned_on_parent (Grob *me, Axis a)
 
   Interval ext (me->extent (me, a));
   if (ext.is_empty ())
-    programming_error ("can't align on self: empty element");
+    programming_error ("cannot align on self: empty element");
   else
     x -= ext.linear_combination (align);
 
@@ -131,21 +144,22 @@ Self_alignment_interface::set_align_self (Grob *me, Axis a)
 		       a);
 }
 
-ADD_INTERFACE (Self_alignment_interface, "self-alignment-interface",
-	       "Position this object on itself and/or on its parent. To this end, the following functions "
-	       " are provided: \n"
-	       "@table @code \n"
+ADD_INTERFACE (Self_alignment_interface,
+	       "Position this object on itself and/or on its parent.  To this"
+	       " end, the following functions are provided:\n"
+	       "\n"
+	       "@table @code\n"
 	       "@item Self_alignment_interface::[xy]_aligned_on_self\n"
-	       "  Align self on reference point, using @code{self-alignment-X} and "
-	       "@code{self-alignment-Y}."
+	       "Align self on reference point, using"
+	       " @code{self-alignment-X} and @code{self-alignment-Y}."
 	       "@item Self_alignment_interface::aligned_on_[xy]_parent\n"
 	       "@item Self_alignment_interface::centered_on_[xy]_parent\n"
-	       "  Shift the object so its own reference point is centered on the  "
-	       " extent of the parent \n"
+	       "Shift the object so its own reference point is centered on"
+	       " the extent of the parent\n"
 	       "@end table\n",
 
-
-	       /* porperties */
+	       /* properties */
 	       "self-alignment-X "
-	       "self-alignment-Y ");
+	       "self-alignment-Y "
+	       );