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diff --git a/slideshow/source/inc/transitionfactory.hxx b/slideshow/source/inc/transitionfactory.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_TRANSITIONFACTORY_HXX
+#define INCLUDED_SLIDESHOW_SOURCE_INC_TRANSITIONFACTORY_HXX
+
+#include <com/sun/star/animations/XTransitionFilter.hpp>
+#include <com/sun/star/presentation/XTransitionFactory.hpp>
+
+#include "rgbcolor.hxx"
+#include "slide.hxx"
+#include "screenupdater.hxx"
+#include "animationactivity.hxx"
+#include "activitiesfactory.hxx"
+#include "numberanimation.hxx"
+#include "soundplayer.hxx"
+#include "shapemanager.hxx"
+
+namespace slideshow::internal
+    {
+        /* Definition of Transitionfactory class */
+        namespace TransitionFactory
+        {
+            /** Create a transition effect for shapes.
+
+                This method creates an AnimationActivity, which, when
+                run, performs the requested transition effect on the
+                given shape.
+
+                @param rParms
+                Collection of activity parameters, see ActivitiesFactory
+
+                @param rShape
+                Shape to animate
+
+                @param rShapeManager
+                ShapeManager, to manage shape animation
+
+                @param xTransition
+                The transition effect
+
+                @return the created activity, or NULL for no
+                transition effect
+             */
+            AnimationActivitySharedPtr createShapeTransition(
+                const ActivitiesFactory::CommonParameters&              rParms,
+                const AnimatableShapeSharedPtr&                         rShape,
+                const ShapeManagerSharedPtr&                            rShapeManager,
+                const ::basegfx::B2DVector&                             rSlideSize,
+                css::uno::Reference< css::animations::XTransitionFilter > const&  xTransition );
+
+
+            /** Create a transition effect for slides.
+
+                This method creates a NumberAnimation, which,
+                when run, performs the requested transition effect
+                with the slide bitmaps.
+
+                @param rEnteringBitmap
+                Bitmap of the slide which 'enters' the screen.
+
+                @param rLeavingBitmap
+                Bitmap of the slide which 'leaves' the screen.
+
+                @param nTransitionType
+                Type of the transition (see XTransitionFilter)
+
+                @param nTransitionSubType
+                Subtype of the transition (see XTransitionFilter)
+
+                @param bTransitionDirection
+                Direction of the transition (see XTransitionFilter)
+
+                @param rTransitionFadeColor
+                Optional fade color for the transition
+
+                @return the created animation, or NULL for no
+                transition effect
+             */
+            NumberAnimationSharedPtr createSlideTransition(
+                const SlideSharedPtr&                          rLeavingSlide,
+                const SlideSharedPtr&                          rEnteringSlide,
+                const UnoViewContainer&                        rViewContainer,
+                ScreenUpdater&                                 rScreenUpdater,
+                EventMultiplexer&                              rEventMultiplexer,
+                const css::uno::Reference< css::presentation::XTransitionFactory>&
+                                                               xOptionalFactory,
+                sal_Int16                                      nTransitionType,
+                sal_Int16                                      nTransitionSubType,
+                bool                                           bTransitionDirection,
+                const RGBColor&                                rTransitionFadeColor,
+                const SoundPlayerSharedPtr&                    rSoundPlayer );
+        }
+
+}
+
+#endif // INCLUDED_SLIDESHOW_SOURCE_INC_TRANSITIONFACTORY_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */