--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/photosgallery/slideshow/engine/effectsrc/shwcrossfadelayout.cpp	Thu Dec 17 08:45:44 2009 +0200
@@ -0,0 +1,120 @@
+/*
+* 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:    Layout that performs crossfade
+ *
+*/
+
+
+
+
+//  Include Files
+#include "shwcrossfadelayout.h"
+
+#include <glxlog.h>
+#include <glxtracer.h>
+
+#include "shwconstants.h"
+
+using namespace NShwSlideshow;
+
+// -----------------------------------------------------------------------------
+// Constructor
+// -----------------------------------------------------------------------------
+TShwCrossFadeLayout::TShwCrossFadeLayout()
+	{
+	TRACER("TShwCrossFadeLayout::TShwCrossFadeLayout");
+	GLX_LOG_INFO("TShwCrossFadeLayout::TShwCrossFadeLayout");
+	__DEBUG_ONLY( _iName = _L("TShwCrossfadeLayout") );
+	// default values
+	// style is linear
+	iOpacity.SetStyle( EAlfTimedValueStyleLinear );
+	}
+
+// -----------------------------------------------------------------------------
+// Destructor
+// -----------------------------------------------------------------------------
+TShwCrossFadeLayout::~TShwCrossFadeLayout()
+	{
+	TRACER("TShwCrossFadeLayout::~TShwCrossFadeLayout");
+	GLX_LOG_INFO("TShwCrossFadeLayout::~TShwCrossFadeLayout");
+	// Do nothing
+	}
+
+// -----------------------------------------------------------------------------
+// Set
+// -----------------------------------------------------------------------------
+void TShwCrossFadeLayout::Set( TReal32 aOpacity, TInt aDuration )
+	{
+	TRACER("TShwCrossFadeLayout::Set");
+	GLX_LOG_INFO("TShwCrossFadeLayout::Set");
+	iOpacity.Set( aOpacity, aDuration );
+	}
+
+// -----------------------------------------------------------------------------
+// Pause
+// -----------------------------------------------------------------------------
+void TShwCrossFadeLayout::Pause()
+	{
+	TRACER("TShwCrossFadeLayout::Pause");
+	GLX_LOG_INFO("TShwCrossFadeLayout::Pause");
+	iOpacity.Pause();
+	}
+
+// -----------------------------------------------------------------------------
+// Resume
+// -----------------------------------------------------------------------------
+void TShwCrossFadeLayout::Resume()
+	{
+	TRACER("TShwCrossFadeLayout::Resume");
+	GLX_LOG_INFO("TShwCrossFadeLayout::Resume");
+	iOpacity.Resume();
+	}
+
+// -----------------------------------------------------------------------------
+// DoSetLayoutValues
+// -----------------------------------------------------------------------------
+void TShwCrossFadeLayout::DoSetLayoutValues( TGlxLayoutInfo& aInfo )
+	{
+	TRACER("TShwCrossFadeLayout::DoSetLayoutValues");
+	GLX_LOG_INFO("TShwCrossFadeLayout::DoSetLayoutValues");
+	// get new opacity
+	TReal32 opacity = iOpacity.Now();
+
+	// ensure value is inside maximum and minimum opacity
+    opacity = Min( opacity, KMaxOpacity );
+    opacity = Max( opacity, KMinOpacity );
+
+	// set value to the info
+	//aInfo.iOpacity = opacity;
+	}
+
+// -----------------------------------------------------------------------------
+// DoChanged
+// -----------------------------------------------------------------------------
+TBool TShwCrossFadeLayout::DoChanged() const
+	{
+	TRACER("TShwCrossFadeLayout::DoChanged");
+	GLX_LOG_INFO("TShwCrossFadeLayout::DoChanged");
+	return iOpacity.Changed();
+	}
+	
+// -----------------------------------------------------------------------------
+// DoClearChanged
+// -----------------------------------------------------------------------------
+void TShwCrossFadeLayout::DoClearChanged() 
+	{
+	TRACER("TShwCrossFadeLayout::DoClearChanged");
+	GLX_LOG_INFO("TShwCrossFadeLayout::DoClearChanged");
+	iOpacity.ClearChanged();
+	}