/*

* Copyright (c) 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:    

*

*/

// INCLUDE FILES

#include "HgVgScrollBar.h"

#include "HgVgDrawBuffer.h"

#include "HgVgHelper.h"

#include "HgScrollbar.h"

#include <VG/vgu.h>

#include <gulicon.h>

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

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

// CHgVgScrollBar::NewL()

// Two-phased constructor.

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

//

CHgVgScrollBar* CHgVgScrollBar::NewL( MHgScrollbarObserver& aObserver, 

        TRect aScrollbarRect,

                    TSize aTotalSize,

                    TSize aViewSize,

                    TBool aLandscapeScrolling,

                    CHgScroller::THgScrollBarType aScrollBarType )

    {

    CHgVgScrollBar* self = new ( ELeave ) CHgVgScrollBar( ); 

    CleanupStack::PushL (self );

    self->ConstructL( aObserver, aScrollbarRect, aTotalSize, aViewSize, aLandscapeScrolling, aScrollBarType );

    CleanupStack::Pop ( self );

    return self;

    }

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

// CHgVgScrollBar::ConstructL()

// Symbian 2nd phase constructor can leave.

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

//

void CHgVgScrollBar::ConstructL ( MHgScrollbarObserver& aObserver, TRect aScrollbarRect,

        TSize aTotalSize,

        TSize aViewSize,

        TBool aLandscapeScrolling,

        CHgScroller::THgScrollBarType aScrollBarType )

    {

    ResizeL(aObserver, aScrollbarRect, aTotalSize, aViewSize, aLandscapeScrolling, 

            aScrollBarType);

    CreateImagesL();

    }

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

// CHgVgScrollBar::CreateImagesL()

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

//

void CHgVgScrollBar::CreateImagesL()

    {

    iScrollbarBg = HgVgHelper::CreateVgImageFromIconL(*iScrollbar->ScrollbarBg());

    iScrollbarBgSelected = HgVgHelper::CreateVgImageFromIconL(*iScrollbar->ScrollbarBgSelected());

    iScrollbarHandle = HgVgHelper::CreateVgImageFromIconL(*iScrollbar->ScrollbarHandle());

    iScrollbarHandleSelected = HgVgHelper::CreateVgImageFromIconL(*iScrollbar->ScrollbarHandleSelected());

    //iScrollbarHandleBg = HgVgHelper::CreateVgImageFromIconL(iScrollbar->ScrollbarHandleBg());

    }

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

// CHgVgScrollBar::CHgVgMediaWall()

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

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

//

CHgVgScrollBar::CHgVgScrollBar(  ) : 

iEnabled(ETrue)

    {

    }

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

// CHgVgScrollBar::~CHgVgScrollBar()

// Destructor.

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

//

CHgVgScrollBar::~CHgVgScrollBar ( )

    {

    vgDestroyImage(iScrollbarBg);

    vgDestroyImage(iScrollbarBgSelected);

    vgDestroyImage(iScrollbarHandle);

    vgDestroyImage(iScrollbarHandleSelected);

    //vgDestroyImage(iScrollbarHandleBg);

    delete iScrollbar;

    }

void CHgVgScrollBar::SetViewPosition( TPoint aPosition )

    {

    iScrollbar->SetViewPosition(aPosition);

    }

TBool CHgVgScrollBar::HandlePointerEventL( const TPointerEvent& aEvent )

    {

    if (!iEnabled)

        return EFalse;

    return iScrollbar->HandlePointerEventL(aEvent);

    }

void CHgVgScrollBar::Draw(const TRect& aWindowRect, TReal aAlpha) const

    {

    if (!iEnabled)

        return;

    TRect scrollbarRect = iScrollbar->ScrollbarRect();

    TPoint handlePosition = iScrollbar->HandlePosition();

    const CGulIcon* scrollbarBg = iScrollbar->ScrollbarBg();

    const CGulIcon* scrollbarBgSelected = iScrollbar->ScrollbarBgSelected();

    const CGulIcon* scrollbarHandle = iScrollbar->ScrollbarHandle();

    const CGulIcon* scrollbarHandleSelected = iScrollbar->ScrollbarHandleSelected();

    const CGulIcon* scrollbarHandleBg = iScrollbar->ScrollbarHandleBg();

    if(scrollbarBg && scrollbarHandle && scrollbarHandleBg)

        {

        if(iScrollbar->Handler() && !iScrollbar->IsStatic())

            {

            DrawImage(scrollbarRect.iTl,

                    iScrollbarBgSelected, 

                    scrollbarBgSelected->Bitmap()->SizeInPixels(), aWindowRect, aAlpha);

            DrawImage(scrollbarRect.iTl + handlePosition, 

                    iScrollbarHandleSelected,

                    scrollbarHandleSelected->Bitmap()->SizeInPixels(), aWindowRect, aAlpha);

            }

        else

            {

            DrawImage(scrollbarRect.iTl, 

                    iScrollbarBg,

                    scrollbarBg->Bitmap()->SizeInPixels(), aWindowRect, aAlpha);

            DrawImage(scrollbarRect.iTl + handlePosition,

                    iScrollbarHandleBg,

                    scrollbarHandleBg->Bitmap()->SizeInPixels(), aWindowRect, aAlpha);

            DrawImage(scrollbarRect.iTl + handlePosition, 

                    iScrollbarHandle,

                    scrollbarHandle->Bitmap()->SizeInPixels(), aWindowRect, aAlpha);

            }

        }    

    }

void CHgVgScrollBar::DrawImage(const TPoint& aPosition, VGImage aImage, 

        const TSize& /*aSize*/, const TRect& aWindowRect, TReal aAlpha) const

    {

    TRgb color(255, 255, 255, aAlpha * 255.0f);

    HgVgHelper::DrawImageColorized(aImage, color, aPosition, aWindowRect, EFalse);

    }

TBool CHgVgScrollBar::IsEnabled() const

    {

    return iEnabled;

    }

void CHgVgScrollBar::SetEnabled(TBool aEnabled)

    {

    iEnabled = aEnabled;

    }

void CHgVgScrollBar::ResizeL(

        MHgScrollbarObserver& aObserver, 

        TRect aScrollbarRect,

        TSize aTotalSize,

        TSize aViewSize,

        TBool aLandscapeScrolling,

        CHgScroller::THgScrollBarType /*aScrollBarType */)

    {

    iScrollbar = CHgScrollbar::NewL(aObserver);

    iScrollbar->InitScrollBarL(aScrollbarRect, aTotalSize, aViewSize, aLandscapeScrolling);    

    }

// End of File