/*

* Copyright (c) 2002-2004 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the License "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 the CScrollBar class.

*

*/

#include "ScrollBar.h"

#include "ScrollThumb.h"

//////////////////////////////////////////////////////////////////////

// Construction/Destruction

//////////////////////////////////////////////////////////////////////

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

// CScrollBar* CScrollBar::NewL(const TOrientation aOrientation, const CCoeControl& aParent)

//

// Two-phased constructor

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

//

CScrollBar* CScrollBar::NewL(const TOrientation aOrientation, const CCoeControl& aParent)

	{

	CScrollBar* self = new (ELeave) CScrollBar(aOrientation);

	CleanupStack::PushL(self);

	self->ConstructL(aParent);

	CleanupStack::Pop(self);   // self

	return self;

	}

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

// CScrollBar::CScrollBar(const TOrientation aOrientation)

//

// First Phase Construction

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

//

CScrollBar::CScrollBar(const TOrientation aOrientation)

	{

	const TRgb KTrackColour = 0xC0C0C0;	// light grey

	const TRgb KTrackBkgdColour = KRgbWhite;

	SetOrientation(aOrientation);

	SetTrackColours(KTrackColour, KTrackBkgdColour);

	}

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

// CScrollBar::ConstructL(const CCoeControl& aParent)

// 

// EPOC Second Phase Constructor

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

//

void CScrollBar::ConstructL(const CCoeControl& aParent)

	{

	SetContainerWindowL(aParent);

	SetRect(TRect(0, 0, 0, 0));

	iThumb = CScrollThumb::NewL(iOrientation);

	iThumb->SetContainerWindowL(*this);

	ActivateL();

	}

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

// CScrollBar::~CScrollBar()

// 

// DESTRUCTOR

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

//

CScrollBar::~CScrollBar()

	{

	delete iThumb;

	}

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

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

// 

// Draws a scroll bar

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

//

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

	{

	CWindowGc& gc = SystemGc();	 

	// Draw Track Background - it always redraws the rectangle.

	gc.SetPenStyle( CGraphicsContext::ESolidPen );

	gc.SetPenColor( iTrackBkgdColour );

	gc.SetBrushStyle( CGraphicsContext::ESolidBrush );

	gc.SetBrushStyle( CGraphicsContext::ENullBrush );

    gc.SetBrushColor( iTrackBkgdColour );

	gc.DrawRect( Rect() );

	// Draw Track - iTrackCentre can be 'null' rectangle 

    // (e.g. until SetTrackAndBackground is not called), 

    // so in that case the following will not draw anything.

	gc.SetPenStyle( CGraphicsContext::ENullPen );

    gc.SetBrushStyle( CGraphicsContext::ESolidBrush );

    gc.SetBrushColor( iTrackColour );

	gc.DrawRect(iTrackCentre);

	}

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

// TInt CScrollBar::CountComponentControls() const

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

//

TInt CScrollBar::CountComponentControls() const

    {

	return 1;

    }

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

// void CScrollBar::SizeChanged() const

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

//

void CScrollBar::SizeChanged() 

    {

    }

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

// CCoeControl* CScrollBar::ComponentControl(TInt aIndex) const

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

//

CCoeControl* CScrollBar::ComponentControl(TInt aIndex) const

    {

	switch (aIndex)

		{

		case 0:

			return iThumb;

		default:

			return NULL;

		}

    //lint -e{1763} Error -- (Info -- Member function 'CBrCtl::ComponentControl(int) const' marked as const indirectly modifies class)

    }

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

// void CScrollBar::SetTrackColours(const TRgb aTrackColour,

//                                  const TRgb aTrackBkgdColour)

// Sets colours for scroll bar

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

//

void CScrollBar::SetTrackColours(const TRgb aTrackColour, 

								 const TRgb aTrackBkgdColour)

	{

	iTrackColour = aTrackColour;

	iTrackBkgdColour = aTrackBkgdColour;

	}

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

// void CScrollBar::SetThumb(TRect& aRect)

// 

// Sets the rect of a scrollbar thumb

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

//

void CScrollBar::SetThumb(const TRect& aRect)

	{

	iThumb->SetRect(aRect);

	}

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

// void CScrollBar::SetTrackAndBackground(const TRect& aRect)

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

//

void CScrollBar::SetTrackAndBackground(const TRect& aRect)

	{

	SetRect(aRect);

	// Fit into background

	iTrackCentre = aRect;

	iTrackCentre.Shrink(KTrackBkgdThickness, KTrackBkgdThickness);

	}

// End of File