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diff --git a/slideshow/source/inc/shapemanager.hxx b/slideshow/source/inc/shapemanager.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_SLIDESHOW_SOURCE_INC_SHAPEMANAGER_HXX
+#define INCLUDED_SLIDESHOW_SOURCE_INC_SHAPEMANAGER_HXX
+
+#include "disposable.hxx"
+#include <com/sun/star/uno/Reference.hxx>
+#include <memory>
+
+namespace com::sun::star::drawing { class XShape; }
+
+/* Definition of ShapeManager interface */
+
+namespace slideshow
+{
+    namespace internal
+    {
+        class HyperlinkArea;
+        class AnimatableShape;
+        class Shape;
+        typedef ::std::shared_ptr< AnimatableShape > AnimatableShapeSharedPtr;
+        typedef ::std::shared_ptr< Shape > ShapeSharedPtr;
+        typedef std::shared_ptr< HyperlinkArea > HyperlinkAreaSharedPtr;
+
+        /** ShapeManager interface
+
+            Implementers of this interface manage appearance and
+            animation of slideshow shapes.
+         */
+        class ShapeManager : public Disposable
+        {
+        public:
+            /** Notify the ShapeManager that the given Shape starts an
+                animation now.
+
+                This method enters animation mode for the Shape. If
+                the shape is already in animation mode, the call is
+                counted, and the shape only leaves animation mode
+                after a corresponding number of leaveAnimationMode()
+                calls.
+             */
+            virtual void enterAnimationMode( const AnimatableShapeSharedPtr& rShape ) = 0;
+
+            /** Notify the ShapeManager that the given Shape is no
+                longer animated.
+
+                When called a corresponding number of times as
+                enterAnimationMode() for a given shape, this methods
+                ends animation mode for the given Shape. It is illegal
+                to call this method more often than
+                enterAnimationMode().
+             */
+            virtual void leaveAnimationMode( const AnimatableShapeSharedPtr& rShape ) = 0;
+
+            /** Notify that a shape needs an update
+
+                This method notifies the ShapeManager that a shape
+                update is necessary. Use this if e.g. a running
+                animation changed the shape appearance.
+
+                @param rShape
+                Shape which needs an update
+             */
+            virtual void notifyShapeUpdate( const ShapeSharedPtr& rShape ) = 0;
+
+            /** Lookup a Shape from an XShape model object
+
+                This method looks up the internal shape map for one
+                representing the given XShape.
+
+                @param xShape
+                The XShape object, for which the representing Shape
+                should be looked up.
+             */
+            virtual ShapeSharedPtr lookupShape(
+                css::uno::Reference< css::drawing::XShape > const & xShape ) const = 0;
+
+            /** Register given shape as a hyperlink target
+
+                @param rArea
+                Hyperlink sensitive area. Will participate in
+                hyperlink region lookup. Must be in absolute user
+                space coordinates.
+             */
+            virtual void addHyperlinkArea( const HyperlinkAreaSharedPtr& rArea ) = 0;
+        };
+
+        typedef ::std::shared_ptr< ShapeManager > ShapeManagerSharedPtr;
+    }
+}
+
+#endif // INCLUDED_SLIDESHOW_SOURCE_INC_SHAPEMANAGER_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */