/*

* Copyright (c) 2006 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:  

*           Miscellaneous SVG-T related utility methods.

*

*/

// ========== INCLUDE FILES ================================

#include "MsgSvgUtils.h"

#include <SVGEngineInterfaceImpl.h>

// ========== LOCAL CONSTANTS AND MACROS ===================

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

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

// CMsgSvgUtils::CMsgSvgUtils

// 

// C++ constructor.

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

//

EXPORT_C CMsgSvgUtils::CMsgSvgUtils()

    {

    }

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

// CMsgSvgUtils::~CMsgSvgUtils

// 

// Destructor.

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

//

CMsgSvgUtils::~CMsgSvgUtils()

    {

    }

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

// CMsgSvgUtils::GenerateThumbnailL

// 

// Creates SVG-T engine instance and opens the given file handle

// to it. Calculates the correctly "fitted" thumbnail size from

// the given maximum size and either from SVG-T engine scaled size

// or if this is not set then from original SVG-T file dimensions.

// Finally renders the thumbnail frame to the bitmap & mask.

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

//

#ifdef RD_SVGT_IN_MESSAGING

EXPORT_C void CMsgSvgUtils::GenerateThumbnailL( RFile& aFile, 

                                                CFbsBitmap* aBitmap,

                                                CFbsBitmap* aMask,

                                                TBool aAutomaticDrmControl,

                                                TSize& aContentSize )

    {

    TSize maxSize( aContentSize );

    TFontSpec spec;

    CSvgEngineInterfaceImpl* svgEngine = CSvgEngineInterfaceImpl::NewL( aBitmap, this, spec );

    CleanupStack::PushL( svgEngine );

    svgEngine->SetBackgroundColor( KRgbWhite.Value() );

    svgEngine->SetDRMRights( aAutomaticDrmControl );

    TInt domHandle( KNullHandle );

    MSvgError* result = svgEngine->PrepareDom( aFile, domHandle );

    HandleSVGEngineErrorL( result );

    result = svgEngine->UseDom( domHandle, aBitmap, aMask );

    HandleSVGEngineErrorL( result );

    aContentSize = svgEngine->Size();

    if ( aContentSize.iHeight <= 0 &&

         aContentSize.iWidth <= 0 )

        {

        // SVG engine might fail to set proper size so in that case

        // we use the original size.

        aContentSize = svgEngine->GetUnscaledContentSize( domHandle );

        }

    if ( aContentSize.iHeight > 0 &&

         aContentSize.iWidth > 0 )

        { 

        TReal widthRatio = static_cast<TReal>( maxSize.iWidth ) / 

                           static_cast<TReal>( aContentSize.iWidth );

        TReal heightRatio = static_cast<TReal>( maxSize.iHeight ) / 

                            static_cast<TReal>( aContentSize.iHeight );

        // Calculate "meet" ratio                    

        TReal scaleFactor = ( widthRatio < heightRatio ) ? widthRatio : heightRatio;

        aContentSize.iHeight *= scaleFactor;

        aContentSize.iWidth *= scaleFactor;

        svgEngine->SetSvgDimensionToFrameBuffer( aContentSize.iWidth, aContentSize.iHeight );

        // Chooses view box for SVG files where it has not bee set.

        svgEngine->ChooseViewBoxIfNotSet( domHandle );    

        svgEngine->InitializeEngine();

        // Render the content on consumer provided bitmap

        svgEngine->RenderFrame( NULL, 0 );

        }

    CleanupStack::PopAndDestroy( svgEngine );

    }

#else

EXPORT_C void CMsgSvgUtils::GenerateThumbnailL( RFile& /*aFile*/, 

                                                CFbsBitmap* /*aBitmap*/,

                                                CFbsBitmap* /*aMask*/,

                                                TBool /*aAutomaticDrmControl*/,

                                                TSize& /*aContentSize*/ )

    {

    User::Leave( KErrNotSupported );

    }

#endif

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

// CMsgSvgUtils::UpdateScreen

// (other items were commented in a header).

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

//

void CMsgSvgUtils::UpdateScreen()

    {    

    }

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

// CMsgSvgUtils::ScriptCall

// (other items were commented in a header).

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

//

TBool CMsgSvgUtils::ScriptCall( const TDesC& /*aScript*/, CSvgElementImpl* /*aCallerElement*/ )

    {

    return EFalse;

    }

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

// CMsgSvgUtils::FetchImage

// (other items were commented in a header).

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

//

TInt CMsgSvgUtils::FetchImage( const TDesC& /*aUri*/, RFs& /*aSession*/, RFile& /*aFileHandle*/ )

    {

    return KErrNotFound;

    }

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

// CMsgSvgUtils::FetchFont

// (other items were commented in a header).

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

//

TInt CMsgSvgUtils::FetchFont( const TDesC& /*aUri*/, RFs& /*aSession*/, RFile& /*aFileHandle*/ )

    {

    return KErrNotFound;

    }

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

// CMsgSvgUtils::UpdatePresentation

// (other items were commented in a header).

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

//

void CMsgSvgUtils::UpdatePresentation( const TInt32&  /*aNoOfAnimation*/ )

    {

    }

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

// CMsgSvgUtils::HandleSVGEngineErrorL

// 

// Performs SVG-T engine error resolving.

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

//

void CMsgSvgUtils::HandleSVGEngineErrorL( MSvgError* aError ) const

    {

    if ( !aError )

        {

        User::Leave( KErrNoMemory ); 

        }

    else if ( aError->HasError() && !aError->IsWarning() )

        {

        User::Leave( aError->SystemErrorCode() ); 

        }

    }

//  End of File