/*

* Copyright (c) 2008-2009 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:    Implementation of TGlxZoomLayoutBase

*

*/

// INCLUDE FILES

#include "glxzoomlayoutbase.h"

#include <alf/alftimedvalue.h>

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

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

// C++ default constructor can NOT contain any code, that might leave.

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

//

EXPORT_C TGlxZoomLayoutBase::TGlxZoomLayoutBase()

    {

    }

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

// Destructor

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

//

EXPORT_C TGlxZoomLayoutBase::~TGlxZoomLayoutBase()

    {

    }

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

// SetImageDimensions

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

//

EXPORT_C void TGlxZoomLayoutBase::SetImageDimensions(const TSize& aDimensions)

    {

    iImageDimensions = aDimensions;

    iChanged = ETrue;

    }

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

// ImageDimensions

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

//

EXPORT_C const TSize& TGlxZoomLayoutBase::ImageDimensions() const

    {

    return iImageDimensions;

    }

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

// DoSetLayoutValues

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

//

EXPORT_C void TGlxZoomLayoutBase::DoSetLayoutValues(TGlxLayoutInfo& aInfo)

    {

    TAlfRealRect rect;

    GetCurrentCoords(rect);

    // These checks on iImageDimensions width/height must occur after GetCurrentCoords,

  /*  // since they may be changed as a result of the call to GetCurrentCoords

    if ( iImageDimensions.iWidth > 0 && iImageDimensions.iHeight > 0 )

        {

        // The previous layout in the chain has set the position and size for

        // the visual to fill the screen, so we base the values on that.

        // Now adjust according to zoom coordinates

        TAlfRealPoint centre = rect.Center();        

        TReal32 width = aInfo.iScreenSize.iX * rect.Width();

        TReal32 height = aInfo.iScreenSize.iY * rect.Height();

        // Adjust size according to proportion of screen that image fills

        // Account for TGlxRotationLayout swapping width and height

        TAlfRealSize imageSize(iImageDimensions);

        TAlfRealSize screenSize(aInfo.ScreenInfo()->iWidth,

                                aInfo.ScreenInfo()->iHeight);

        if ( screenSize.iHeight * imageSize.iWidth

                < imageSize.iHeight * screenSize.iWidth )

            {

            // Screen has wider aspect than image

            TReal32 sizeRatioX = (screenSize.iHeight * imageSize.iWidth)

                                / (screenSize.iWidth * imageSize.iHeight);

            if ( aInfo.iRotation )

                {

                // Rotated

                height *= sizeRatioX;

                }

            else

                {

                // Normal

                width *= sizeRatioX;

                }

            }

        else

            {

            // Screen has taller aspect than image

            TReal32 sizeRatioY = (screenSize.iWidth * imageSize.iHeight)

                                / (screenSize.iHeight * imageSize.iWidth);

            if ( aInfo.iRotation )

                {

                // Rotated

                width *= sizeRatioY;

                }

            else

                {

                // Normal

                height *= sizeRatioY;

                }

            }

        aInfo.iPosition.iX += centre.iX * aInfo.iSize.iX;

        aInfo.iPosition.iY += centre.iY * aInfo.iSize.iY;

        aInfo.iSize.iX = width;

        aInfo.iSize.iY = height;

        }

*/

    }

//  End of File