--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/photosgallery/slideshow/engine/coresrc/shwtimer.h	Thu Dec 17 08:45:44 2009 +0200
@@ -0,0 +1,125 @@
+/*
+* Copyright (c) 2007-2008 Nokia Corporation and/or its subsidiary(-ies). 
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description:    Slideshow specific timer
+ *
+*/
+
+
+
+
+#ifndef __SHWTIMER_H__
+#define __SHWTIMER_H__
+
+// INCLUDES
+#include <e32std.h>
+#include <e32base.h>
+
+// Forward declarations
+
+// CLASS DECLARATION
+
+/**
+ * CShwTimer. a Pause-able timer
+ * 
+ * @lib shwslideshowengine.lib
+ */
+NONSHARABLE_CLASS( CShwTimer ) : public CBase
+	{
+	public:
+
+		/**
+		 * Constructor.
+		 * @param TInt aPriority - the priority of the timer.
+		 */
+		static CShwTimer* NewL( TInt aPriority );
+
+		/**
+		 * Destructor.
+		 */
+		~CShwTimer();
+
+	public: // the API
+
+		/**
+		 * This method starts the timer.  It may be called repeatedly
+		 * as the timer is always first cancelled.
+		 * Note! Time is given in milliseconds
+		 * 
+		 * @param aDelay - milliseconds for the first callback
+		 * @param aInterval - milliseconds for the successive callbacks
+		 * @param aCallback - the function to call
+		 */
+		void Start( TInt aDelay, TInt aInterval, TCallBack aCallback );
+
+		/**
+		 * This method cancels the timer.
+		 */
+		void Cancel();
+
+		/**
+		 * Pauses the timer if it is active
+		 */
+		void Pause();
+		
+		/**
+		 * Resumes the timer. If timer was paused the timer is restarted
+		 * for the time left and after that for interval.
+		 */
+		void Resume();
+
+		/**
+		 * Method that returns whether the timer is active.
+		 * @return ETrue if the timer is active, EFalse otherwise
+		 */
+		TBool IsActive();
+		
+	private: // Constructors
+
+		/**
+		 * C++ constructor.
+		 */
+		CShwTimer();
+
+		/**
+		 * 2nd stage constructor
+		 */
+		void ConstructL( TInt aPriority );
+
+		/**
+		 * This method returns the amount of time remaining until
+		 * the timer is due to expire.
+		 * @return - the time in microseconds left until the timer finishes
+		 *			or 0 (whichever is greater).
+		 */
+		TTimeIntervalMicroSeconds32 TimeLeft();
+		
+	private:
+
+		/// Own: the timer
+		CPeriodic* iTimer;
+		
+		/// Own: the callback
+		TCallBack iCallback;
+		/// Own: the time left in pause
+		TTimeIntervalMicroSeconds32 iTimeLeft;
+		/// Own: the interval for the timer
+		TTimeIntervalMicroSeconds32 iInterval;
+		/// Own: state flag that tells us if we are paused
+		TBool iPaused;
+
+		/// Own: the time at which the timer is set to expire
+		TTime iTimeTimerExpires;
+	};
+
+#endif // __SHWTIMER_H__