/*

* Copyright (c) 2004-2008 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:  Wrapper class for access to scalable item renderer.

*

*/

// INCLUDE FILES

#include "AknsCppPreface.h"

#include <AknsRendererWrapper.h>

#include "AknsScalabilityUtils.h"

#include "AknsRlRenderer.h"

#include "AknsDebug.h"

// ============================ MEMBER FUNCTIONS ===============================

// -----------------------------------------------------------------------------

// AknsRendererWrapper::RenderScalableItemL

// (commented in the header).

// -----------------------------------------------------------------------------

//

EXPORT_C void AknsRendererWrapper::RenderScalableItemL(

    MAknsSkinInstance* aSkin, const TAknsItemID& aIID, CFbsBitmap*& aOutRGB,

    CFbsBitmap*& aOutAlpha, const TRect& aRect,

    const CFbsBitmap* aInRGB, const CFbsBitmap* aInAlpha )

    {

    if( !aSkin ) User::Leave( KErrArgument );

    CAknsAppSkinInstance* appSkin = static_cast<CAknsAppSkinInstance*>(aSkin);

    TAknsItemID realIID =

        AknsScalabilityUtils::ConcreteEffectQueue( appSkin, aIID );

    if( realIID == KAknsIIDNone )

        {

        // No such item

        User::Leave( KErrNotFound );

        }

    CAknsEffectQueueItemData* queue = static_cast<CAknsEffectQueueItemData*>(

        appSkin->GetCachedItemData( realIID, EAknsITEffectQueue ) );

    if( !queue )

        {

        // No such item

        User::Leave( KErrNotFound );

        }

    MAknsRlRenderer* renderer = appSkin->DefaultRenderer();

    MAknsRlCommandIterator* commands =

        queue->CreateCommandIteratorL();

    CleanupStack::PushL( TCleanupItem(

        MAknsRlCommandIterator::CleanupOperation, commands ) ); // (1)

    TInt inputLayer = queue->InputLayer();

    TInt outputLayer = queue->OutputLayer();

    // Bitmap and mask being created, no leaves allowed

    TInt rendererErr = KErrNone;

    CFbsBitmap* bitmap = NULL;

    CFbsBitmap* alpha = NULL;

    if( aInRGB || aInAlpha )

        {

        rendererErr = renderer->RenderItemWithBackground(

            bitmap, alpha, outputLayer, commands, aRect.Size(),

            aInRGB, aInAlpha, aRect, inputLayer );

        }

    else

        {

        rendererErr = renderer->RenderItem(

            bitmap, alpha, outputLayer, commands, aRect.Size() );

        }

    if( rendererErr )

        {

        // Leave is safe (bitmaps not created)

        User::Leave( rendererErr );

        }

    CleanupStack::PopAndDestroy(); // commands (0)

    // Drop alpha, if RGB only

    if( queue->OutputLayerMode() == KAknsRlLayerRGBOnly )

        {

        delete alpha;

        alpha = NULL;

        }

    // Ownership transfer

    aOutRGB = bitmap;

    aOutAlpha = alpha;

    }

//  End of File