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diff --git a/slideshow/source/inc/transitioninfo.hxx b/slideshow/source/inc/transitioninfo.hxx
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+/*************************************************************************
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * Copyright 2008 by Sun Microsystems, Inc.
+ *
+ * OpenOffice.org - a multi-platform office productivity suite
+ *
+ * $RCSfile: transitioninfo.hxx,v $
+ * $Revision: 1.5 $
+ *
+ * This file is part of OpenOffice.org.
+ *
+ * OpenOffice.org is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License version 3
+ * only, as published by the Free Software Foundation.
+ *
+ * OpenOffice.org is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License version 3 for more details
+ * (a copy is included in the LICENSE file that accompanied this code).
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * version 3 along with OpenOffice.org.  If not, see
+ * <http://www.openoffice.org/license.html>
+ * for a copy of the LGPLv3 License.
+ *
+ ************************************************************************/
+
+#if ! defined INCLUDED_SLIDESHOW_TRANSITIONINFO_HXX
+#define INCLUDED_SLIDESHOW_TRANSITIONINFO_HXX
+
+#include <sal/types.h>
+
+
+namespace slideshow {
+namespace internal {
+
+struct TransitionInfo
+{
+    // the following two member serve as the search key
+    // for an incoming XTransitionFilter node
+    //
+    // {
+
+    sal_Int16       mnTransitionType;
+    sal_Int16       mnTransitionSubType;
+
+    // }
+    //
+
+    /** This enum classifies a transition type
+     */
+    enum TransitionClass
+    {
+        /// Invalid type
+        TRANSITION_INVALID,
+
+        /// Transition expressed by parametric clip polygon
+        TRANSITION_CLIP_POLYPOLYGON,
+
+        /// Transition expressed by hand-crafted function
+        TRANSITION_SPECIAL
+    };
+
+    /// class of effect handling
+    TransitionClass meTransitionClass;
+
+    /// Rotation angle of clip polygon
+    double          mnRotationAngle;
+
+    /// X scaling of clip polygon (negative values mirror)
+    double          mnScaleX;
+
+    /// Y scaling of clip polygon (negative values mirror)
+    double          mnScaleY;
+
+    /** This enum determines the method how to reverse
+        a parametric clip polygon transition.
+
+        A reversed transition runs in the geometrically
+        opposite direction. For a left-to-right bar wipe, the
+        reversed transition is a right-to-left wipe, whereas
+        for an iris transition, the reversed mode will show
+        the target in the outer area (instead of in the inner
+        area, as in normal mode).
+    */
+    enum ReverseMethod
+    {
+        /** Ignore direction attribute altogether
+            (if it has no sensible meaning for this transition)
+        */
+        REVERSEMETHOD_IGNORE,
+
+        /** Revert by changing the direction of the parameter sweep
+            (from 1->0 instead of 0->1)
+        */
+        REVERSEMETHOD_INVERT_SWEEP,
+
+        /** Revert by subtracting the generated polygon from the
+            target bound rect
+        */
+        REVERSEMETHOD_SUBTRACT_POLYGON,
+
+        /** Combination of REVERSEMETHOD_INVERT_SWEEP and
+            REVERSEMETHOD_SUBTRACT_POLYGON.
+        */
+        REVERSEMETHOD_SUBTRACT_AND_INVERT,
+
+        /// Reverse by rotating polygon 180 degrees
+        REVERSEMETHOD_ROTATE_180,
+
+        /// Reverse by flipping polygon at the y (!) axis
+        REVERSEMETHOD_FLIP_X,
+
+        /// Reverse by flipping polygon at the x (!) axis
+        REVERSEMETHOD_FLIP_Y
+    };
+
+    /** Indicating the method to use when transition
+        should be 'reversed'.
+
+        @see ReverseMethod
+    */
+    ReverseMethod   meReverseMethod;
+
+    /** When true, transition 'out' effects are realized
+        by inverting the parameter sweep direction (1->0
+        instead of 0->1). Otherwise, 'out' effects are
+        realized by changing inside and outside areas of
+        the parametric poly-polygon.
+    */
+    bool            mbOutInvertsSweep;
+
+    /** when true, scale clip polygon isotrophically to
+        target size.  when false, scale is
+        anisotrophically.
+    */
+    bool            mbScaleIsotrophically;
+
+
+    /// Compare against type and subtype
+    class Comparator
+    {
+        sal_Int16 mnTransitionType;
+        sal_Int16 mnTransitionSubType;
+    public:
+        Comparator( sal_Int16 nTransitionType,
+                    sal_Int16 nTransitionSubType )
+            : mnTransitionType( nTransitionType ),
+              mnTransitionSubType( nTransitionSubType ) {}
+        bool operator()( const TransitionInfo& rEntry ) const {
+            return rEntry.mnTransitionType == mnTransitionType &&
+                rEntry.mnTransitionSubType == mnTransitionSubType;
+        }
+    };
+};
+
+} // namespace internal
+} // namespace presentation
+
+#endif /* INCLUDED_SLIDESHOW_TRANSITIONINFO_HXX */