Null canvas

Review URL: http://codereview.appspot.com/6117051/



git-svn-id: http://skia.googlecode.com/svn/trunk@4220 2bbb7eff-a529-9590-31e7-b0007b416f81

1 files changed, 18 insertions, 0 deletions

diff --git a/src/utils/SkNullCanvas.cpp b/src/utils/SkNullCanvas.cpp
new file mode 100644
index 0000000000..2dc448f21a
--- /dev/null
+++ b/src/utils/SkNullCanvas.cpp
@@ -0,0 +1,18 @@
+/*
+ * Copyright 2012 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "SkNullCanvas.h"
+
+#include "SkCanvas.h"
+#include "SKNWayCanvas.h"
+
+
+SkCanvas* SkCreateNullCanvas() {
+    // An N-Way canvas forwards calls to N canvas's. When N == 0 it's
+    // effectively a null canvas.
+    return SkNEW(SkNWayCanvas);
+}