/*

* 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:

*

*/

#ifndef __LAFSCRLB_H__

#define __LAFSCRLB_H__

#include <e32std.h>

#include <gulbordr.h>

#include <coecntrl.h>

#include <lafpublc.h>

class MLafEnv;

class CWindowGc;

/**

 * @internal

 * Do not use

 */

class LafScrollBar

	{

public:

	inline static TInt MinimumThumbLength();

	inline static TInt DefaultFlags();

	inline static TInt DefaultBreadth();

	inline static TInt BorderWidth();

	inline static TInt DefaultButtonPositionFlags();

	IMPORT_C static void GetDefaultBorder(TGulBorder& aBorder);

	IMPORT_C static void GetBorderColors(TGulBorder::TColors& aBorderColors,const MLafEnv& aEnv,const CCoeControl& aMatchedControl);

// added to allow differing style of scrollbars

	IMPORT_C static void DrawShaft(const MLafEnv& aLafEnv,const CCoeControl& aScrollBar,CWindowGc& aGc,const TRect& aRect,TInt aScrollBarDisplayFlags,TBool aHorizontal);

	IMPORT_C static void DrawShaftAroundThumb(const MLafEnv& aLafEnv,const CCoeControl& aScrollBar,CWindowGc& aGc,const TRect& aShaftRect,TBool aHorizontal,TInt aThumbPos,TInt aThumbLength);

	IMPORT_C static void RedrawShaft(const MLafEnv& aLafEnv,const CCoeControl& aScrollBar,CWindowGc& aGc, const TRect& aRect,TInt aShaftStart,TInt aShaftEnd,TBool aHorizontal);

	IMPORT_C static void DrawHighlightedShaftArea(const MLafEnv& aLafEnv, const CCoeControl& aScrollBar, CWindowGc& aGc, TRect& aArea, TBool aIsHighlighted,

		TInt aThumbPos, TInt aThumbLength, TBool aHorizontal);

	IMPORT_C static TInt CalculateThumbLength(TInt aShaftLength,TInt aModelScrollSpan,

		TInt aModelThumbSpan);

	IMPORT_C static TInt CalcThumbPosInScrollBar(TInt aShaftStart, TInt aShaftEnd,

		TInt aThumbLength,TInt aModelThumbPos,TInt aModelScrollSpan,TInt aModelThumbSpan );

	IMPORT_C static TInt CalcThumbPosInScrollBarModel(TInt aShaftStart, TInt aShaftEnd,

		TInt aThumbLength,TInt aThumbPos,TInt aModelScrollSpan,TInt aModelThumbSpan );

	IMPORT_C static void GetColorUseListL(CArrayFix<TCoeColorUse>& aColorUseList);

	IMPORT_C static TBool IsPointerOutOfDragRange(const TPoint& aPointerPosition,const TRect& aScrollBarRect,TBool aHorizontal);

	IMPORT_C static TBool IsBorderOutsideButtons();

	IMPORT_C static void AdjustButtonExtentForScrollBarBorder(TPoint& aPosition,TSize& aSize,TInt aButtonType,TInt aScrollBarFlags, TBool aHorizontal, const TMargins& aMargins);

	IMPORT_C static void AdjustShaftRangeForScrollBarBorder(TInt& aShaftStart,TInt& aShaftEnd,TBool aHorizontal,TInt aScrollBarFlags,const TMargins& aMargins);

private:

	enum TConstantType

		{

		EMinimumThumbLen,

		EDefaultFlags,

		EDefaultBreadth,

		EBorderWidth,

		EDefaultButtonPositionFlags

		};

private:

	IMPORT_C static TInt Constant(TConstantType aConstant);

	};

class LafArrowHeadScrollBar

	{

public:

	IMPORT_C static void GetDefaultBorder(TGulBorder& aBorder);

	IMPORT_C static void GetBorderColors(TGulBorder::TColors& aBorderColors,const MLafEnv& aEnv,const CCoeControl& aMatchedControl);

	};

inline TInt LafScrollBar::MinimumThumbLength()

	{return Constant(EMinimumThumbLen);}

inline TInt LafScrollBar::DefaultFlags()

	{return Constant(EDefaultFlags);}

inline TInt LafScrollBar::DefaultBreadth()

	{return Constant(EDefaultBreadth);}

inline TInt LafScrollBar::BorderWidth()

	{return Constant(EBorderWidth);}

/**

 * Returns the button position flags which will be used if they have

 * not already been setup during scroll bar creation. 

 *

 * @since App-Framework_6.1

 */

inline TInt LafScrollBar::DefaultButtonPositionFlags()

	{return Constant(EDefaultButtonPositionFlags);}

#endif