// Copyright (c) 1997-2009 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 "SCDRAW.H"

#include "_WININC.H"

TInt CDrawFourBppScreenBitmapGray::InitScreen()

	{

	TRect drawRect;

	GetDrawRect(drawRect);

    RWindows* window = ::WindowHandler(iScreenNo);

	window->iDisplayMode = DisplayMode();

	window->iEpocBitmapSize = drawRect.Size();

	window->iEpocBitmapLinePitch = (iScanLineWords*4);

	return KErrNone;

	}

void CDrawFourBppScreenBitmapGray::OrientationsAvailable(TBool aOrientation[4])

	{

	aOrientation[EOrientationNormal] = ETrue;

	aOrientation[EOrientationRotated90] = EFalse;

	aOrientation[EOrientationRotated180] = EFalse;

	aOrientation[EOrientationRotated270] = EFalse;

	}

void CDrawFourBppScreenBitmapGray::UpdateRect(const TRect& aRect) const

	{

	ASSERT(aRect.iTl.iX >= 0 && aRect.iTl.iY >= 0);

	ASSERT(aRect.iBr.iX <= iSize.iWidth);

	ASSERT(aRect.iBr.iY <= iSize.iHeight);

	TInt lx = aRect.iTl.iX & ~7;

	TInt rx = (aRect.iBr.iX + 7) & ~7;

	TInt wordwidth = (rx - lx) >> 3;

	for (TInt row = aRect.iTl.iY; row < aRect.iBr.iY; row++)

		{

		TUint8* destPixel = WinPixelAddress(lx,row);

		TInt wordx = lx;

		for(TInt word = 0; word < wordwidth; word++)

			{

			TUint32 data;

			ReadLine(wordx,row,8,&data);

			TUint8 grayIndex = TUint8((data & 0xf) * 17);

			destPixel[0] = grayIndex;

			destPixel[1] = grayIndex;

			destPixel[2] = grayIndex;

			grayIndex = TUint8(((data >> 4) & 0xf) * 17);

			destPixel[3] = grayIndex;

			destPixel[4] = grayIndex;

			destPixel[5] = grayIndex;

			grayIndex = TUint8(((data >> 8) & 0xf) * 17);

			destPixel[6] = grayIndex;

			destPixel[7] = grayIndex;

			destPixel[8] = grayIndex;

			grayIndex = TUint8(((data >> 12) & 0xf) * 17);

			destPixel[9] = grayIndex;

			destPixel[10] = grayIndex;

			destPixel[11] = grayIndex;

			grayIndex = TUint8(((data >> 16) & 0xf) * 17);

			destPixel[12] = grayIndex;

			destPixel[13] = grayIndex;

			destPixel[14] = grayIndex;

			grayIndex = TUint8(((data >> 20) & 0xf) * 17);

			destPixel[15] = grayIndex;

			destPixel[16] = grayIndex;

			destPixel[17] = grayIndex;

			grayIndex = TUint8(((data >> 24) & 0xf) * 17);

			destPixel[18] = grayIndex;

			destPixel[19] = grayIndex;

			destPixel[20] = grayIndex;

			grayIndex = TUint8(((data >> 28) & 0xf) * 17);

			destPixel[21] = grayIndex;

			destPixel[22] = grayIndex;

			destPixel[23] = grayIndex;

			destPixel += 24;

			wordx += 8;

			}

		}

	}