From: Han-Wen Nienhuys <hanwen@xs4all.nl>
Date: Fri, 12 Jan 2007 17:02:14 +0000 (+0100)
Subject: new function Staff_symbol_referencer::extent_in_staff()
X-Git-Tag: release/2.11.12-1~35^2~9
X-Git-Url: https://git.donarmstrong.com/?a=commitdiff_plain;h=07166db2479bd02bbc367c41873408e69f55051f;p=lilypond.git

new function Staff_symbol_referencer::extent_in_staff()
---

diff --git a/lily/include/staff-symbol-referencer.hh b/lily/include/staff-symbol-referencer.hh
index 5b9656de22..4a43a94e03 100644
--- a/lily/include/staff-symbol-referencer.hh
+++ b/lily/include/staff-symbol-referencer.hh
@@ -39,6 +39,7 @@ public:
   static Real get_position (Grob *);
   static Real staff_radius (Grob *);
   static int get_rounded_position (Grob *);
+  static Interval extent_in_staff (Grob *); 
 };
 
 int compare_position (Grob *const &, Grob *const &);\
diff --git a/lily/staff-symbol-referencer.cc b/lily/staff-symbol-referencer.cc
index a74a1c07c9..53637c86e5 100644
--- a/lily/staff-symbol-referencer.cc
+++ b/lily/staff-symbol-referencer.cc
@@ -92,6 +92,25 @@ Staff_symbol_referencer::get_position (Grob *me)
   return robust_scm2double (me->get_property ("staff-position"), p);
 }
 
+
+Interval
+Staff_symbol_referencer::extent_in_staff (Grob *me)
+{
+  Grob *st = get_staff_symbol (me);
+  Grob *c = st ? me->common_refpoint (st, Y_AXIS) : 0;
+
+  Interval retval;
+  if (st && c)
+    {
+      retval  = me->extent (c, Y_AXIS)
+	- st->relative_coordinate (c, Y_AXIS);
+    }
+
+  return retval;
+}
+
+
+
 int
 Staff_symbol_referencer::get_rounded_position (Grob *me)
 {
@@ -172,3 +191,4 @@ ADD_INTERFACE (Staff_symbol_referencer,
 	       /* properties */
 	       "staff-position");
 
+