/*

* Copyright (c) 1997-1999 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 <aknscbut.h>

#include <eiksfont.h>

#include <gulutil.h>

#include <eikenv.h>

#include <gulcolor.h>

#include <aknscind.h>

#include <AknsUtils.h>

#include <AknUtils.h>

#include <aknappui.h>

// const TInt KAknScrollButtonBorderWidth=0;

// const TInt KAknScrollButtonWidth=9;

// const TInt KAknScrollButtonHeight=10;

const TInt KTypeOfScrollBarMask = 0x000f;

EXPORT_C CAknScrollButton* CAknScrollButton::NewL(TType aType)

	{

	CAknScrollButton* self = new (ELeave) CAknScrollButton(aType);

	CleanupStack::PushL(self);

	self->ConstructL();

	CleanupStack::Pop();

	return self;

	}

EXPORT_C CAknScrollButton::~CAknScrollButton()

	{

    AknsUtils::DeregisterControlPosition( iScrollIndicator );

	delete iScrollIndicator;

	}

EXPORT_C CAknScrollButton::TType CAknScrollButton::Type() const

	{

	return iType;

	}

EXPORT_C void CAknScrollButton::CreateWindowOnlyForArrowsL(const CCoeControl* aParent)

	{

	CreateWindowL(aParent);

    // "Parent absolute" skin layout requires every window to have a container window.

    iScrollIndicator->SetContainerWindowL(*this);

    if ( AknLayoutUtils::PenEnabled() )

    	{

    	iScrollIndicator->SetWindowOwning( ETrue );

    	}

	}

EXPORT_C TBool CAknScrollButton::IsNormalScrollBarUsingButton() const

	{

    if( AknLayoutUtils::PenEnabled() )

        {

        // correction: AND with 0x0 is always false!

        return (iFlag == ENormal);

        }

    else

        {

    	return (iFlag&ENormal);

        }

	}

/*

 * Set the type of scroll bar which owns the button.

 */

EXPORT_C void CAknScrollButton::SetTypeOfScrollBarUsingButton(TTypeOfScrollBar aTypeOfScrollBar)

	{

    iFlag &= (~KTypeOfScrollBarMask);

	iFlag |= aTypeOfScrollBar;

	}

EXPORT_C void CAknScrollButton::SetPosition(TInt aThumbPosition, TInt aScrollSpan)

	{

	iScrollIndicator->SetPosition(aThumbPosition, aScrollSpan); 

	DrawDeferred() ;

	}

CAknScrollButton::CAknScrollButton(CAknScrollButton::TType aType)

	: iType(aType)

	{

	}

void CAknScrollButton::ConstructL()

	{

	iScrollIndicator = CAknScrollIndicator::NewL(iType);

	iScrollIndicator->SetContainerWindowL(*this);

	SetNonFocusing();

	}

void CAknScrollButton::Draw(const TRect& /*aRect*/) const

	{

    CWindowGc& gc=SystemGc();

	if (!IsNormalScrollBarUsingButton())

	    {	    

		gc.SetBrushColor( iEikonEnv->ControlColor(EColorMenuPaneBackground, *this) );

	    }

	else

	    {	    

		gc.SetBrushColor(KRgbWhite);

	    }

	DrawIndicator();

	}

void CAknScrollButton::SizeChanged()

	{

	iScrollIndicator->SetRect( Rect() );

	if (iOldRect != Rect())

	    {	    

	    AknsUtils::RegisterControlPosition( iScrollIndicator );

	    }

	iOldRect = Rect();

	}

void CAknScrollButton::DrawIndicator() const

	// Draws the indicator on the button 

	{

    if( AknLayoutUtils::PenEnabled() )

        {

        if(IsNormalScrollBarUsingButton())

            {

            // The rect has already been set by CAknDoubleSpanScrollBar

            iScrollIndicator->DrawScrollIndicator( Rect() );

            }

        }

    if ( iFlag == EArrowHead )

        {

        iScrollIndicator->DrawScrollIndicator( Rect() );

        }

	}

EXPORT_C CAknScrollButton* CAknScrollButton::NewL(TType aType, TTypeOfScrollBar aTypeOfScrollBar)

	{

	CAknScrollButton* self = new (ELeave) CAknScrollButton(aType);

	CleanupStack::PushL(self);

	self->ConstructL(aTypeOfScrollBar);

	CleanupStack::Pop();

	return self;

	}

void CAknScrollButton::ConstructL(TTypeOfScrollBar aTypeOfScrollBar)

	{

	SetTypeOfScrollBarUsingButton(aTypeOfScrollBar);

	iScrollIndicator = CAknScrollIndicator::NewL(iType, aTypeOfScrollBar);

	iScrollIndicator->SetContainerWindowL(*this);

	SetNonFocusing();

	}

void CAknScrollButton::SetContainerWindowL( const CCoeControl& aControl )

    {

    CCoeControl::SetContainerWindowL( aControl );

    if ( iScrollIndicator )

        {

        iScrollIndicator->SetContainerWindowL( *this );

        }

    }

TInt CAknScrollButton::CountComponentControls() const

    {

    if ( iScrollIndicator )

        {

        return 1; 

        }

    return 0;

    }

CCoeControl* CAknScrollButton::ComponentControl( TInt aIndex ) const

    {

    if ( iScrollIndicator && aIndex == 0 )

        {

        return iScrollIndicator;

        }

    return NULL;           

    }