1 files changed, 43 insertions, 0 deletions
diff --git a/include/vcl/BitmapMonochromeFilter.hxx b/include/vcl/BitmapMonochromeFilter.hxx
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+++ b/include/vcl/BitmapMonochromeFilter.hxx
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+/* -*- 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_INCLUDE_VCL_BITMAPMONOCHROMEFILTER_HXX
+#define INCLUDED_INCLUDE_VCL_BITMAPMONOCHROMEFILTER_HXX
+
+#include <vcl/BitmapFilter.hxx>
+
+class VCL_DLLPUBLIC BitmapMonochromeFilter final : public BitmapFilter
+{
+public:
+    /** Convert to 2 color bitmap.
+
+        Converts to a 2 color indexed bitmap - note that we don't change to black
+        and white monochrome, but we pick the closest color to black and white in
+        the bitmap.
+
+        @param cThreshold
+        Luminance value that determines whether the colour should be black (or
+        closest color to black) or white (or closest color to white).
+
+     */
+    BitmapMonochromeFilter(sal_uInt8 cThreshold)
+        : mcThreshold(cThreshold)
+    {
+    }
+
+    virtual BitmapEx execute(BitmapEx const& rBitmapEx) const override;
+
+private:
+    sal_uInt8 mcThreshold;
+};
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */