Imported Upstream version 2.14.2

[lilypond.git] / lily / stencil-scheme.cc

diff --git a/lily/stencil-scheme.cc b/lily/stencil-scheme.cc
index c2d9d8e9616a535df7015df57437c6ef2e082ec3..0e7f0cd8c7012a8da86e1bb185cf0b400feccbce 100644 (file)
--- a/lily/stencil-scheme.cc
+++ b/lily/stencil-scheme.cc
@@ -1,9 +1,20 @@
 /*
-  stencil-scheme.cc -- implement Stencil scheme accessors
+  This file is part of LilyPond, the GNU music typesetter.
 
-  source file of the GNU LilyPond music typesetter
+  Copyright (C) 1997--2011 Han-Wen Nienhuys <hanwen@xs4all.nl>
 
-  (c) 1997--2009 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
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+
+  LilyPond is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with LilyPond.  If not, see <http://www.gnu.org/licenses/>.
 */
 
 
@@ -379,3 +390,20 @@ LY_DEFINE (ly_all_stencil_expressions, "ly:all-stencil-expressions",
 {
   return all_stencil_heads ();
 }
+
+LY_DEFINE (ly_stencil_scale, "ly:stencil-scale",
+           3, 0, 0, (SCM stil, SCM x, SCM y),
+          "Scale @var{stil} using the horizontal and vertical scaling"
+          " factors @var{x} and @var{y}.")
+{
+  Stencil *s = unsmob_stencil (stil);
+  LY_ASSERT_SMOB (Stencil, stil, 1);
+  LY_ASSERT_TYPE (scm_is_number, x, 2);
+  LY_ASSERT_TYPE (scm_is_number, y, 3);
+
+  SCM new_s = s->smobbed_copy ();
+  Stencil *q = unsmob_stencil (new_s);
+
+  q->scale (scm_to_double (x), scm_to_double (y));
+  return new_s;
+}