2 files changed, 36 insertions, 2 deletions
diff --git a/include/vcl/BitmapDuoToneFilter.hxx b/include/vcl/BitmapDuoToneFilter.hxx
new file mode 100644
index 000000000000..72c02e7afcfa
--- /dev/null
+++ b/include/vcl/BitmapDuoToneFilter.hxx
@@ -0,0 +1,36 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ */
+
+#ifndef INCLUDED_VCL_BITMAPDUOTONEFILTER_HXX
+#define INCLUDED_VCL_BITMAPDUOTONEFILTER_HXX
+
+#include <vcl/BitmapFilter.hxx>
+
+class BitmapEx;
+
+class VCL_DLLPUBLIC BitmapDuoToneFilter : public BitmapFilter
+{
+public:
+    BitmapDuoToneFilter(sal_uLong nColorOne, sal_uLong nColorTwo)
+        : mnColorOne(nColorOne)
+        , mnColorTwo(nColorTwo)
+    {
+    }
+
+    virtual BitmapEx execute(BitmapEx const& rBitmapEx) override;
+
+private:
+    sal_uLong mnColorOne;
+    sal_uLong mnColorTwo;
+};
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/include/vcl/bitmap.hxx b/include/vcl/bitmap.hxx
index 1da50be8aaac..78aeb2292533 100644
--- a/include/vcl/bitmap.hxx
+++ b/include/vcl/bitmap.hxx
@@ -658,8 +658,6 @@ public:
     SAL_DLLPRIVATE bool     ImplDitherFloyd();
     SAL_DLLPRIVATE bool     ImplDitherFloyd16();
 
-    SAL_DLLPRIVATE bool     ImplDuotoneFilter( const sal_uLong nColorOne,  sal_uLong nColorTwo );
-
 public:
 
     BitmapInfoAccess*       AcquireInfoAccess();