--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/photosgallery/slideshow/engine/coresrc/shwthumbnailcontext.cpp	Thu Dec 17 08:45:44 2009 +0200
@@ -0,0 +1,162 @@
+/*
+* 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 thumbnail context
+ *
+*/
+
+
+
+
+// INCLUDES
+#include "shwthumbnailcontext.h"
+
+#include <glxthumbnailinfo.h>
+#include <glxthumbnailattributeinfo.h>
+#include <glxerrormanager.h>
+#include <mglxmedialist.h>
+
+#include <glxlog.h>
+#include <glxtracer.h>
+
+// DEPENDENCIES
+
+// -----------------------------------------------------------------------------
+// Constructor.
+// -----------------------------------------------------------------------------
+inline CShwThumbnailContext::CShwThumbnailContext( 
+    TInt aIndex, TSize aSize ) : iSize(aSize), iCurrentIndex( aIndex )
+    {
+    }
+
+// -----------------------------------------------------------------------------
+// NewLC.
+// -----------------------------------------------------------------------------
+CShwThumbnailContext* CShwThumbnailContext::NewLC( TInt aIndex, TSize aSize )
+    {
+    TRACER("CShwThumbnailContext::NewLC");
+    GLX_LOG_INFO1( "CShwThumbnailContext::NewL, aIndex=%d", aIndex );
+    CShwThumbnailContext* self =
+        new (ELeave) CShwThumbnailContext( aIndex, aSize );
+    CleanupStack::PushL( self );
+    self->ConstructL();
+    return self;
+    }
+
+// -----------------------------------------------------------------------------
+// ConstructL.
+// -----------------------------------------------------------------------------
+void CShwThumbnailContext::ConstructL()
+    {
+    TRACER("CShwThumbnailContext::ConstructL");
+    GLX_LOG_INFO("CShwThumbnailContext::ConstructL");
+    // Create the high quality / slower context
+    iHighQualityContext = CGlxThumbnailContext::NewL( this );
+    // Call both setdefault and add?
+    iHighQualityContext->SetDefaultSpec( iSize.iWidth, iSize.iHeight );
+    iHighQualityContext->AddSpecForItemL( iSize.iWidth, iSize.iHeight,
+        iCurrentIndex );
+    // we want to only load high quality with this context
+    iHighQualityContext->SetHighQualityOnly( ETrue );
+    }
+
+// -----------------------------------------------------------------------------
+// Destructor.
+// -----------------------------------------------------------------------------
+CShwThumbnailContext::~CShwThumbnailContext()
+    {
+    TRACER("CShwThumbnailContext::~CShwThumbnailContext");
+    GLX_LOG_INFO( "CShwThumbnailContext::~CShwThumbnailContext" );
+    delete iHighQualityContext;
+    }
+
+// -----------------------------------------------------------------------------
+// SetToFirst.
+// -----------------------------------------------------------------------------
+void CShwThumbnailContext::SetToFirst( const MGlxMediaList* /*aList*/ )
+    {
+    TRACER("CShwThumbnailContext::SetToFirst");
+    GLX_LOG_INFO( "CShwThumbnailContext::SetToFirst" );
+    // reset iterator state
+    iIterated = EFalse;
+    }
+
+// -----------------------------------------------------------------------------
+// CShwThumbnailLoaderImpl::operator++.
+// -----------------------------------------------------------------------------
+TInt CShwThumbnailContext::operator++( TInt )
+    {
+    TRACER("CShwThumbnailContext::operator++");
+    GLX_LOG_INFO( "CShwThumbnailContext::operator++" );
+    // we want to load all the thumbnails our clients have requested 
+    // notification on, nothing else
+    // by default tell the thumbnail that we dont have any interesting indexes
+    TInt wantedIndex = KErrNotFound;
+    // check if we were asked already
+    if( !iIterated )
+        {
+        // we want to load thumbnail for the specified index
+        wantedIndex = iCurrentIndex;
+        iIterated = ETrue;
+        }
+    // finally return the index that was wanted
+    return wantedIndex;
+    }
+
+// -----------------------------------------------------------------------------
+// InRange.
+// -----------------------------------------------------------------------------
+TBool CShwThumbnailContext::InRange( TInt aIndex ) const
+    {
+    TRACER("CShwThumbnailContext::InRange");
+    GLX_LOG_INFO( "CShwThumbnailContext::InRange" );
+    // if we got notifications
+    if ( aIndex == iCurrentIndex )
+        {
+        // is in range so dont remove the item :)
+        // cache removes thumbnails that are no longer in range
+        return ETrue;
+        }
+    // not in our range
+    return EFalse;
+    }
+
+// -----------------------------------------------------------------------------
+// RequestCountL.
+// -----------------------------------------------------------------------------
+TInt CShwThumbnailContext::RequestCountL(const MGlxMediaList* aList) const
+    {
+    TRACER("CShwThumbnailContext::RequestCountL");
+    GLX_LOG_INFO( "CShwThumbnailContext::RequestCountL" );
+    return iHighQualityContext->RequestCountL( aList );
+    }
+
+// -----------------------------------------------------------------------------
+// Index.
+// -----------------------------------------------------------------------------
+TInt CShwThumbnailContext::Index()
+    {
+    TRACER("CShwThumbnailContext::Index");
+    GLX_LOG_INFO1( "CShwThumbnailContext::Index %d", iCurrentIndex );
+    return iCurrentIndex;
+    }
+
+// -----------------------------------------------------------------------------
+// Context.
+// -----------------------------------------------------------------------------
+MGlxFetchContext* CShwThumbnailContext::Context()
+	{
+	TRACER("CShwThumbnailContext::Context");
+	GLX_LOG_INFO( "CShwThumbnailContext::Context" );
+	return iHighQualityContext;
+	}