--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/photosgallery/slideshow/engine/inc/shwconstants.h	Thu Dec 17 08:45:44 2009 +0200
@@ -0,0 +1,108 @@
+/*
+* 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 interface
+ *
+*/
+
+
+
+
+#ifndef __SHWCONSTANTS_H__
+#define __SHWCONSTANTS_H__
+
+// INCLUDES
+#include <e32std.h>
+
+// FORWARD DECLARATIONS
+
+// CLASS DECLARATION
+/**
+ * Namespace for slideshow constants.
+ */
+namespace NShwSlideshow
+    {
+    enum TPlayDirection
+        {
+        EPlayForwards = 1,	// default
+        EPlayBackwards,
+        EPlayRandom
+        };
+
+    // Named constants for navigation directions 
+    // to avoid "magic number" warnings
+    const TInt KNavigateForwards = 1;
+    const TInt KNavigateBackwards = -1;
+
+    // Engine DLL's uid
+    const TUid KEngineDllUid = {0x200071D3};
+
+    // First visual fade-in time, also applies when user navigates
+    const TInt KFirstEffectFadeInDuration = 0;
+    // default transition duration, milliseconds
+    const TInt KDefaultTransitionDuration = 2000;	
+
+    // @todo get correct UID for effect types
+    /**
+    The effect Id is a combination of the ecom plugin UID and an array index
+    within the plugin.
+    */
+    const TUid KDefaultEffectPluginUid = { 0x200071D6 };
+    
+    // Crossfade effects name - used if no localised strings are available
+    _LIT( KEffectNameCrossFade, "Cross Fade" );
+
+    // maximum opacity for TShwCrossFadeLayout
+    const TReal32 KMaxOpacity = 1.0;
+    // minimum opacity for TShwCrossFadeLayout
+    const TReal32 KMinOpacity = 0.0;
+
+    // effect Index - the index within the ecom plugin
+    const TInt KEffectUidXFadeNormal = 1;
+    const TInt KEffectUidZoomAndPan  = 0;
+
+    // Zoom and Pan effect's name - used if no localised strings are available
+    _LIT( KEffectNameZoomAndPan, "Zoom and Pan" );
+    // maximum zoom ever is 200%, note that this should 
+    // not be larger than MaxThumbnailSize
+    const TReal32 KMaxZoomAndPanFactor = 2.0;
+    // optimal zoom is 100%
+    const TReal32 KOptimalZoomAndPanFactor = 1.0;
+    // this defines the minimum zoom factor,
+    // 1.2 means we zoom images that are originally larger than 120% of the screen
+    const TReal32 KMinZoomAndPanFactor = 1.2;
+    // this constant specifies the length of the curve for panning
+    const TInt KZoomAndPanCurveLength = 100;
+
+    // set the maximum loaded thumbnail size to be 2 times the screen
+    // note that this should not be smaller than KMaxZoomAndPanFactor
+    // otherwise we zoom beyond 1:1 pixelsize in big pictures
+    const TInt KMaxThumbnailSize = 2;
+
+    // maximum effect name length
+    const TUint KMaxEffectNameLen = 64;
+
+    /// Thumbnail loading
+    // priority 2 is the highest we use, we need size 
+    // attribute to be loaded first
+    const TInt KSizeContextPriority = 2;
+    // load image sizes 4 items in front and back
+    const TInt KSizeContextOffset = 4;
+
+    // lowest priority for the high quality context
+    // because we have time to wait as we have 
+    // default icon to show
+    const TInt KHighQualityContextPriority = 0;
+    }
+
+#endif // __SHWCONSTANTS_H__