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diff --git a/sd/source/ui/inc/tools/IdleDetection.hxx b/sd/source/ui/inc/tools/IdleDetection.hxx
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+/*************************************************************************
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * Copyright 2000, 2010 Oracle and/or its affiliates.
+ *
+ * OpenOffice.org - a multi-platform office productivity suite
+ *
+ * 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.
+ *
+ ************************************************************************/
+
+#ifndef SD_IDLE_DETECTION_HXX
+#define SD_IDLE_DETECTION_HXX
+
+#include <sal/types.h>
+
+class Window;
+
+namespace sd { namespace tools {
+
+/** Detect whether the system is idle and some time consuming operation may
+    be carried out.  This class ditinguishes between different states of
+    idle-ness.
+*/
+class IdleDetection
+{
+public:
+    /** When GetIdleState() returns this value, then the system is idle.
+    */
+    static const sal_Int32 IDET_IDLE = 0x0000;
+
+    /** There are system event pending.
+    */
+    static const sal_Int32 IDET_SYSTEM_EVENT_PENDING = 0x0001;
+
+    /** A full screen slide show is running and is active.  In contrast
+        there may be a full screen show be running in an inactive window,
+        i.e. in the background.
+    */
+    static const sal_Int32 IDET_FULL_SCREEN_SHOW_ACTIVE = 0x0002;
+
+    /** A slide show is running in a window.
+    */
+    static const sal_Int32 IDET_WINDOW_SHOW_ACTIVE = 0x0004;
+
+    /** A window is being painted.
+    */
+    static const sal_Int32 IDET_WINDOW_PAINTING = 0x0008;
+
+    /** Determine whether the system is idle.
+        @param pWindow
+            When a valid Window pointer is given then it is checked
+            whether the window is currently being painting.
+        @return
+            This method either returns IDET_IDLE or a combination of
+            IdleStates values or-ed together that describe what the system
+            is currently doing so that the caller can decide what to do.
+    */
+    static sal_Int32 GetIdleState (const ::Window* pWindow = NULL);
+
+private:
+    /** Check whether there are input events pending.
+    */
+    static sal_Int32 CheckInputPending (void);
+
+    /** Check whether a slide show is running full screen or in a window.
+    */
+    static sal_Int32 CheckSlideShowRunning (void);
+
+    static sal_Int32 CheckWindowPainting (const ::Window& rWindow);
+};
+
+} } // end of namespace ::sd::tools
+
+#endif