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diff --git a/sdext/source/presenter/PresenterSlidePreview.hxx b/sdext/source/presenter/PresenterSlidePreview.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_PRESENTERSLIDEPREVIEW_HXX
+#define INCLUDED_SDEXT_SOURCE_PRESENTER_PRESENTERSLIDEPREVIEW_HXX
+
+#include "PresenterController.hxx"
+
+#include <com/sun/star/awt/XPaintListener.hpp>
+#include <com/sun/star/awt/XWindowListener.hpp>
+#include <com/sun/star/drawing/XDrawPage.hpp>
+#include <com/sun/star/drawing/XDrawView.hpp>
+#include <com/sun/star/drawing/XSlideRenderer.hpp>
+#include <com/sun/star/drawing/framework/XPane.hpp>
+#include <com/sun/star/drawing/framework/XView.hpp>
+#include <com/sun/star/uno/XComponentContext.hpp>
+#include <cppuhelper/basemutex.hxx>
+#include <cppuhelper/compbase.hxx>
+#include <rtl/ref.hxx>
+
+namespace sdext::presenter {
+
+typedef ::cppu::WeakComponentImplHelper <
+    css::drawing::framework::XView,
+    css::drawing::XDrawView,
+    css::awt::XPaintListener,
+    css::awt::XWindowListener
+> PresenterSlidePreviewInterfaceBase;
+
+/** Static preview of a slide.  Typically used for the preview of the next
+    slide.
+    This implementation shows a preview of the slide given to the
+    setCurrentSlide.  For showing the next slide the PresenterViewFactory
+    uses a derived class that overrides the setCurrentSlide() method.
+*/
+class PresenterSlidePreview
+    : private ::cppu::BaseMutex,
+      public PresenterSlidePreviewInterfaceBase
+{
+public:
+    PresenterSlidePreview (
+        const css::uno::Reference<css::uno::XComponentContext>& rxContext,
+        const css::uno::Reference<css::drawing::framework::XResourceId>& rxViewId,
+        const css::uno::Reference<css::drawing::framework::XPane>& rxAnchorPane,
+        const ::rtl::Reference<PresenterController>& rpPresenterController);
+    virtual ~PresenterSlidePreview() override;
+    PresenterSlidePreview(const PresenterSlidePreview&) = delete;
+    PresenterSlidePreview& operator=(const PresenterSlidePreview&) = delete;
+    virtual void SAL_CALL disposing() override;
+
+    // XResourceId
+
+    virtual css::uno::Reference<css::drawing::framework::XResourceId> SAL_CALL getResourceId() override;
+
+    virtual sal_Bool SAL_CALL isAnchorOnly() override;
+
+    // XWindowListener
+
+    virtual void SAL_CALL windowResized (const css::awt::WindowEvent& rEvent) override;
+
+    virtual void SAL_CALL windowMoved (const css::awt::WindowEvent& rEvent) override;
+
+    virtual void SAL_CALL windowShown (const css::lang::EventObject& rEvent) override;
+
+    virtual void SAL_CALL windowHidden (const css::lang::EventObject& rEvent) override;
+
+    // XPaintListener
+
+    virtual void SAL_CALL windowPaint (const css::awt::PaintEvent& rEvent) override;
+
+    // lang::XEventListener
+    virtual void SAL_CALL disposing (const css::lang::EventObject& rEvent) override;
+
+    // XDrawView
+
+    virtual void SAL_CALL setCurrentPage (
+        const css::uno::Reference<css::drawing::XDrawPage>& rxSlide) override;
+
+    virtual css::uno::Reference<css::drawing::XDrawPage> SAL_CALL getCurrentPage() override;
+
+protected:
+    ::rtl::Reference<PresenterController> mpPresenterController;
+
+private:
+    css::uno::Reference<css::drawing::framework::XResourceId> mxViewId;
+    css::uno::Reference<css::drawing::XSlideRenderer> mxPreviewRenderer;
+
+    /** This Image holds the preview of the current slide.  After resize
+        requests the image may be empty.  This results eventually in a call
+        to ProvideSlide() in order to created a preview in the correct new
+        size.
+    */
+    css::uno::Reference<css::rendering::XBitmap> mxPreview;
+    std::shared_ptr<PresenterBitmapContainer> mpBitmaps;
+
+    /**  The current slide for which a preview is displayed.  This may or
+        may not be the same as the current slide of the PresenterView.
+    */
+    css::uno::Reference<css::drawing::XDrawPage> mxCurrentSlide;
+    double mnSlideAspectRatio;
+
+    css::uno::Reference<css::awt::XWindow> mxWindow;
+    css::uno::Reference<css::rendering::XCanvas> mxCanvas;
+
+    /** Set the given slide as the current slide of the called PresenterSlidePreview
+        object.
+    */
+    void SetSlide (const css::uno::Reference<css::drawing::XDrawPage>& rxPage);
+
+    /** Paint the preview of the current slide centered in the window of the
+        anchor pane.
+    */
+    void Paint (const css::awt::Rectangle& rBoundingBox);
+
+    /** React to a resize of the anchor pane.
+    */
+    void Resize();
+
+    /** @throws css::lang::DisposedException when the object has already been
+        disposed.
+    */
+    void ThrowIfDisposed();
+};
+
+} // end of namespace ::sd::presenter
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */