diff -r 000000000000 -r 4e91876724a2 photosgallery/slideshow/engine/inc/shwslideshowengine.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/photosgallery/slideshow/engine/inc/shwslideshowengine.h	Thu Dec 17 08:45:44 2009 +0200
@@ -0,0 +1,153 @@
+/*
+* 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:    This file defines the API for ShwSlideshowEngine.dll
+ *
+*/
+
+
+
+
+#ifndef __SHWSLIDESHOWENGINE_H__
+#define __SHWSLIDESHOWENGINE_H__
+
+// Include Files
+#include <e32base.h>
+#include <e32std.h>
+#include <alf/alfdisplay.h>
+#include <alf/alfenv.h>
+
+// Forward declarations
+class CAlfEnv;
+class CAlfDisplay;
+class MGlxMediaList;
+class MShwEngineObserver;
+class CShwSlideshowEngineImpl;
+class TShwEffectInfo;
+class MShwMusicObserver;
+
+// Class Definition
+/**
+ * CShwSlideshowEngine
+ *
+ * This is the main API for the slideshow engine
+ * 
+ * @author Kimmo Hoikka
+ * @lib shwslideshowengine.lib
+ * @internal reviewed 07/06/2007 by Loughlin
+ */
+NONSHARABLE_CLASS( CShwSlideshowEngine ) : public CBase
+    {
+    public:
+
+        /**
+         * The state of the engine.
+         */
+        enum TShwState 
+            {
+            EShwStateInitialized = 1,
+            EShwStateRunning,
+            EShwStatePaused
+            };
+
+    public: // Construction
+
+        /**
+         * Constructor
+         * @param aObserver, observer of the engine.
+         */
+        IMPORT_C static CShwSlideshowEngine* NewL( 
+            MShwEngineObserver& aObserver );
+
+        /**
+         * Destructor
+         */
+        IMPORT_C ~CShwSlideshowEngine();
+
+    public: // the API
+
+        /**
+         * This method starts the slideshow.
+         * @param CHuiEnv& the HUI environment to use
+         * @param CHuiDisplay& the HUI display to draw the list to
+         * @param MGlxMediaList& the items to show.
+         * @param MShwMusicObserver& the music control observer.
+         * @param aScreenSize the size for the slideshow screen
+         */
+        IMPORT_C void StartL( CAlfEnv& aEnv, CAlfDisplay& aDisplay,
+                            MGlxMediaList& aItemsToShow,
+                            MShwMusicObserver& aMusicObserver,
+                            TSize aScreenSize );
+
+        /**
+         * This method commands engine to proceed to next item.
+         */
+        IMPORT_C void NextItemL();
+
+        /**
+         * This method commands engine to proceed to previous item.
+         */
+        IMPORT_C void PreviousItemL();
+
+        /**
+         * This method pauses the slideshow
+         */
+        IMPORT_C void PauseL();
+
+        /**
+         * This method resumes the paused slideshow
+         */
+        IMPORT_C void ResumeL();
+
+        /**
+         * This method returns the state of the slideshow
+         * @return the state of the engine
+         */
+        IMPORT_C TShwState State() const;
+
+        /**
+         * This method retrieves the available effects
+         * @param an array where the effect infos are added
+         */
+        IMPORT_C static void AvailableEffectsL(RArray<TShwEffectInfo>& aEffects);
+
+        /**
+         * This method increases the volume
+         */
+        IMPORT_C void VolumeUpL();
+
+        /**
+         * This method decreases the volume
+         */
+        IMPORT_C void VolumeDownL();
+        
+        /**
+         * This method change the ui staus in slideshow when MSK Preesed
+         */
+        IMPORT_C void ToggleUiControlsVisibiltyL();
+        
+        /**
+         * This method react when LSK Preesed
+         */
+        IMPORT_C void LSKPressedL();
+
+    private: // Implementation
+
+        /// C++ constructor, no derivation or use outside the DLL
+        CShwSlideshowEngine();
+        /// Own: the real implementation
+        CShwSlideshowEngineImpl* iImpl;
+
+    };
+
+#endif  // __SHWSLIDESHOWENGINE_H__