/*

* 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 <gulcolor.h>

#include "lafthumb.h"

#include "lafmain.h"

#include "lafcommn.h"

#include "lafgrip.h"

#include "lafpublc.h"

//

// Class LafScrollThumb

//

const TInt KLafScrollThumbGripProportion=3;

const TInt KLafScrollThumbGripMargin=3;

/**

 * Draws the thumb of the scrollbar. The thumb can be drawn in pressed colors if aIsDragged is true, or in normal

 * colors otherwise. The scrollbar is horizontal if aHorizontal is true and vertical otherwise.

 */

EXPORT_C void LafScrollThumb::DrawDragState(const MLafEnv& aLafEnv,CWindowGc& aGc,const CCoeControl& aScrollThumb,TBool aIsDragged, const TRect& aRect, TBool aHorizontal)

    {

    TRgb bgColor;

    if (aScrollThumb.IsDimmed())

        {

        bgColor=aLafEnv.ControlColor((aIsDragged? EColorScrollButtonThumbBackgroundPressed : EColorScrollThumbDimmed),aScrollThumb);

        }

    else

        {

        bgColor=aLafEnv.ControlColor((aIsDragged? EColorScrollButtonThumbBackgroundPressed : EColorScrollButtonThumbBackground),aScrollThumb);

        }

    aGc.SetBrushColor(bgColor);

    aGc.Clear(aRect);

    TRect gripRect=aRect;

    TInt length=(aHorizontal)? gripRect.Size().iWidth : gripRect.Size().iHeight;

    TInt gripStart=((length*(KLafScrollThumbGripProportion-1))/KLafScrollThumbGripProportion)/2;

    TInt horizBorder=(aHorizontal)? gripStart : KLafScrollThumbGripMargin;

    TInt vertBorder=(aHorizontal)? KLafScrollThumbGripMargin : gripStart;

    gripRect.Shrink(horizBorder,vertBorder);

    // TLafGrip::TOrientation gripOrientation=(aHorizontal)? TLafGrip::EVertical : TLafGrip::EHorizontal;

    }

EXPORT_C void LafScrollThumb::GetDefaultBorder(TGulBorder& aBorder, TInt aOrientation)

	{

	if (aOrientation == SLafScrollThumb::EHorizontal)

		{

		aBorder=TGulBorder(TGulBorder::EHorizontalBar);

		}

	else

		{

		aBorder=TGulBorder(TGulBorder::EVerticalBar);

		}

	}

/**

 * Gets the set of border colors for the matched control in aBorderColors. The RGB values of the colors obtained

 * may depend on the the display mode, the environment color list and the instance of the

 * matched control aMatchedControl. Called by the matched control from its Draw() method and passed on to the

 * Draw() method of TGulBorder. 

 */

EXPORT_C void LafScrollThumb::GetBorderColors(TGulBorder::TColors& aBorderColors, const MLafEnv& aLafEnv, const CCoeControl& aMatchedControl)

	{

	LafCommonUtils::GetRgbDerivedBorderColors( aBorderColors,

			EColorScrollButtonThumbBackground, aLafEnv,aMatchedControl );

	}

EXPORT_C void LafScrollThumb::GetColorUseListL(CArrayFix<TCoeColorUse>& aColorUseList)

	{ // static

	TInt commonAttributes = TCoeColorUse::ESurrounds|TCoeColorUse::ENormal|TCoeColorUse::ENeutral;

	TCoeColorUse colorUse;

	colorUse.SetLogicalColor(EColorScrollThumbDimmed);

	colorUse.SetUse(TCoeColorUse::EBack|TCoeColorUse::EDimmed|commonAttributes);

	aColorUseList.AppendL(colorUse);

	colorUse.SetLogicalColor(EColorScrollButtonThumbBackgroundPressed);

	colorUse.SetUse(TCoeColorUse::EFore|TCoeColorUse::EPressed|commonAttributes);

	aColorUseList.AppendL(colorUse);

	colorUse.SetLogicalColor(EColorScrollButtonThumbBackground);

	colorUse.SetUse(TCoeColorUse::EBack|TCoeColorUse::EActive|commonAttributes);

	aColorUseList.AppendL(colorUse);

	}