--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/photosgallery/slideshow/engine/inc/shweffectmanager.h	Thu Dec 17 08:45:44 2009 +0200
@@ -0,0 +1,124 @@
+/*
+* 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:    The effect manager interface
+ *
+*/
+
+
+
+
+#ifndef __MSHWEFFECTMANAGER_H__
+#define __MSHWEFFECTMANAGER_H__
+
+// INCLUDES
+#include <e32std.h>
+#include <e32base.h>
+
+// FORWARD DECLARATIONS
+class MShwEffect;
+class TShwEffectInfo;
+
+// CLASS DECLARATION
+
+/**
+ *  MShwEffectManager
+ * @internal reviewed 07/06/2007 by Loughlin 
+ */
+class MShwEffectManager
+	{
+	public:
+	    /**
+	     * The order that the effects are shown.
+	     */
+	    enum TShwEffectOrder
+	        {
+	        EEffectOrderLinear,
+	        EEffectOrderRandom,
+	        EEffectOrderProgrammed
+	        };
+
+	protected:
+
+		/**
+		 * Destructor. Dont allow deleting objects through this interface.
+		 */
+		virtual ~MShwEffectManager() {};
+
+	public: // the API
+
+		/**
+		 * This method is used by the framework to give the effect manager the
+		 * ownership of the effect objects.
+		 * @param aEffect a effect
+		 */
+		virtual void AddEffectL( MShwEffect* aEffect ) = 0;
+
+		/**
+		 * @return the current effect object.
+		 */
+		virtual MShwEffect* CurrentEffect() = 0;
+
+		/**
+		 * @param aIndex the direction that the list is traversed to retrieve
+		 *			 the effect. A positive value gets a "next" effect, 
+		 * 			 negative gets "previous".
+		 * @return the next effect object. Note! this may be the same as current
+		 */
+		virtual MShwEffect* Effect(TInt aDirection) = 0;
+
+		/**
+		 * Tells the effect manager to proceed to the next or previous effect.
+		 * @param aDirection, positive for "next" or negative 
+		 *			for "previous" effect.
+		 */
+		virtual void ProceedToEffect( TInt aDirection ) = 0;
+        
+        /**
+		 * Sets the effect order.
+		 * @param aOrder the order in which the effects are retrieved.
+		 */
+		virtual void SetEffectOrder( TShwEffectOrder aOrder ) = 0;
+        
+        /**
+		 * @return the effect order.
+		 */
+		virtual TShwEffectOrder EffectOrder() = 0;
+
+        /**
+		 * Sets the programmable effect order.
+		 * Note that the effect order must be set to
+		 * EShwEffectOrderProgrammable for the parameter to be stored.
+		 * @param aEffects array of effects
+		 */
+		virtual void SetProgrammedEffects( RArray< TShwEffectInfo >&
+			aEffects ) = 0;
+		
+		 /**
+		 * Sets the default effect to use.
+		 * @param aInfo effect info
+		 */
+		virtual void SetDefaultEffectL(TShwEffectInfo aInfo) = 0;
+		
+        /**
+		 * Gets the active effects.
+		 * This array will contain pointers to all the effects that
+		 * are used in this show
+		 * @param aEffects array of effects
+		 */
+		virtual void GetActiveEffectsL( RPointerArray< MShwEffect >&
+			aEffects ) = 0;
+				        
+	};
+
+#endif // __MSHWEFFECTMANAGER_H__