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diff --git a/sd/source/console/PresenterGeometryHelper.hxx b/sd/source/console/PresenterGeometryHelper.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 .
+ */
+
+#ifndef INCLUDED_SDEXT_SOURCE_PRESENTER_PRESENTERGEOMETRYHELPER_HXX
+#define INCLUDED_SDEXT_SOURCE_PRESENTER_PRESENTERGEOMETRYHELPER_HXX
+
+#include <com/sun/star/awt/Rectangle.hpp>
+#include <com/sun/star/rendering/XGraphicDevice.hpp>
+#include <com/sun/star/rendering/XPolyPolygon2D.hpp>
+#include <com/sun/star/geometry/RealRectangle2D.hpp>
+#include <vector>
+
+namespace sdext::presenter {
+
+/** Collection of geometry related convenience functions.
+*/
+class PresenterGeometryHelper
+{
+public:
+    static sal_Int32 Round (const double nValue);
+    static sal_Int32 Floor (const double nValue);
+    static sal_Int32 Ceil (const double nValue);
+
+    /** Return the bounding box with integer coordinates of the given
+        rectangle.  Note that due to different rounding of the left/top and
+        the right/bottom border the width of the resulting rectangle may
+        differ for different positions but constant width and height.
+    */
+    static css::awt::Rectangle ConvertRectangle (
+        const css::geometry::RealRectangle2D& rBox);
+
+    /** Convert the given rectangle to integer coordinates so that width and
+        height remain constant when only the position changes.
+    */
+    static css::awt::Rectangle ConvertRectangleWithConstantSize (
+        const css::geometry::RealRectangle2D& rBox);
+
+    static css::geometry::RealRectangle2D ConvertRectangle (
+        const css::awt::Rectangle& rBox);
+
+    //    static css::awt::Size ConvertSize (
+    //        const css::geometry::RealSize2D& rSize);
+
+    static css::awt::Rectangle TranslateRectangle (
+        const css::awt::Rectangle& rBox,
+        const sal_Int32 nXOffset,
+        const sal_Int32 nYOffset);
+
+    static css::awt::Rectangle Intersection (
+        const css::awt::Rectangle& rBox1,
+        const css::awt::Rectangle& rBox2);
+
+    static css::geometry::RealRectangle2D Intersection (
+        const css::geometry::RealRectangle2D& rBox1,
+        const css::geometry::RealRectangle2D& rBox2);
+
+    static bool IsInside (
+        const css::geometry::RealRectangle2D& rBox,
+        const css::geometry::RealPoint2D& rPoint);
+
+    /** Return whether rBox1 is completely inside rBox2.
+    */
+    static bool IsInside (
+        const css::awt::Rectangle& rBox1,
+        const css::awt::Rectangle& rBox2);
+
+    static css::geometry::RealRectangle2D Union (
+        const css::geometry::RealRectangle2D& rBox1,
+        const css::geometry::RealRectangle2D& rBox2);
+
+    static bool AreRectanglesDisjoint (
+        const css::awt::Rectangle& rBox1,
+        const css::awt::Rectangle& rBox2);
+
+    static css::uno::Reference<css::rendering::XPolyPolygon2D> CreatePolygon(
+        const css::awt::Rectangle& rBox,
+        const css::uno::Reference<css::rendering::XGraphicDevice>& rxDevice);
+
+    static css::uno::Reference<css::rendering::XPolyPolygon2D> CreatePolygon(
+        const css::geometry::RealRectangle2D& rBox,
+        const css::uno::Reference<css::rendering::XGraphicDevice>& rxDevice);
+
+    static css::uno::Reference<css::rendering::XPolyPolygon2D> CreatePolygon(
+        const ::std::vector<css::awt::Rectangle>& rBoxes,
+        const css::uno::Reference<css::rendering::XGraphicDevice>& rxDevice);
+
+    /** Create a polygon for a rounded rectangle.
+    */
+    /*    static css::uno::Reference<css::rendering::XPolyPolygon2D> CreatePolygon(
+        const css::awt::Rectangle& rBox,
+        const double nRadius,
+        const css::uno::Reference<css::rendering::XGraphicDevice>&
+        rxDevice);
+    */
+};
+
+}
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */