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diff --git a/sd/source/ui/slidesorter/view/SlsFramePainter.hxx b/sd/source/ui/slidesorter/view/SlsFramePainter.hxx
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+++ b/sd/source/ui/slidesorter/view/SlsFramePainter.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/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#pragma once
+
+#include <vcl/bitmapex.hxx>
+
+namespace sd::slidesorter::view {
+
+class FramePainter
+{
+public:
+    explicit FramePainter (const BitmapEx& rBitmap);
+    ~FramePainter();
+
+    /** Paint a border around the given box by using a set of bitmaps for
+        the corners and sides.
+    */
+    void PaintFrame (OutputDevice&rDevice, const ::tools::Rectangle& rBox) const;
+
+    /** Special functionality that takes the color from the center
+        bitmap and replaces that color in all bitmaps by the given new
+        color.  Alpha values are not modified.
+        The center bitmap is erased.
+    */
+    void AdaptColor (const Color aNewColor);
+
+private:
+    /** Bitmap with offset that is used when the bitmap is painted.  The bitmap
+    */
+    class OffsetBitmap {
+    public:
+        BitmapEx maBitmap;
+        Point maOffset;
+
+        /** Create one of the eight shadow bitmaps from one that combines
+            them all.  This larger bitmap is expected to have dimension NxN
+            with N=1+2*M.  Of this larger bitmap there are created four
+            corner bitmaps of size 2*M x 2*M and four side bitmaps of sizes
+            1xM (top and bottom) and Mx1 (left and right).  The corner
+            bitmaps have each one quadrant of size MxM that is painted under
+            the interior of the frame.
+            @param rBitmap
+                The larger bitmap of which the eight shadow bitmaps are cut
+                out from.
+            @param nHorizontalPosition
+                Valid values are -1 (left), 0 (center), and +1 (right).
+            @param nVerticalPosition
+                Valid values are -1 (top), 0 (center), and +1 (bottom).
+        */
+        OffsetBitmap (
+            const BitmapEx& rBitmap,
+            const sal_Int32 nHorizontalPosition,
+            const sal_Int32 nVerticalPosition);
+
+        /** Use the given device to paint the bitmap at the location that is
+            the sum of the given anchor and the internal offset.
+        */
+        void PaintCorner (OutputDevice& rDevice, const Point& rAnchor) const;
+
+        /** Use the given device to paint the bitmap stretched between the
+            two given locations.  Offsets of the adjacent corner bitmaps and
+            the offset of the side bitmap are used to determine the area
+            that is to be filled with the side bitmap.
+        */
+        void PaintSide (
+            OutputDevice& rDevice,
+            const Point& rAnchor1,
+            const Point& rAnchor2,
+            const OffsetBitmap& rCornerBitmap1,
+            const OffsetBitmap& rCornerBitmap2) const;
+
+        /** Fill the given rectangle with the bitmap.
+        */
+        void PaintCenter (
+            OutputDevice& rDevice,
+            const ::tools::Rectangle& rBox) const;
+    };
+    OffsetBitmap maTopLeft;
+    OffsetBitmap maTop;
+    OffsetBitmap maTopRight;
+    OffsetBitmap maLeft;
+    OffsetBitmap maRight;
+    OffsetBitmap maBottomLeft;
+    OffsetBitmap maBottom;
+    OffsetBitmap maBottomRight;
+    OffsetBitmap maCenter;
+    bool mbIsValid;
+};
+
+} // end of namespace sd::slidesorter::view
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */