// 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 CDrawTwelveBppScreenBitmap::InitScreen()

	{

	TRect drawRect;

	GetDrawRect(drawRect);

    RWindows* window = ::WindowHandler(iScreenNo);

    window->iDisplayMode = DisplayMode();

	window->iEpocBitmapSize = drawRect.Size();

	window->iEpocBitmapLinePitch = (iScanLineWords*4);

	return KErrNone;

	}

TBool CDrawTwelveBppScreenBitmap::SetOrientation(TOrientation aOrientation)

	{

	if (aOrientation == iEmulatorOrientation)

		return ETrue;

	SetScreenOrientation(aOrientation);

	iEmulatorOrientation = aOrientation;

	iOrientation = aOrientation ;

	return ETrue;

	}

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

	{

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

#if defined(_DEBUG)

	if (iOrientation&1)

		{

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

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

		}

	else

		{

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

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

		}

#endif

	TInt scanLineLen=iLongWidth;

	TInt srcPixelStep=1;

	TPoint srcStart(aRect.iTl);

	switch(iOrientation)

		{

	case CFbsDrawDevice::EOrientationRotated90:

		srcPixelStep=scanLineLen;

		scanLineLen=-1;

		srcStart.iX=iSize.iWidth-1-aRect.iTl.iY;

		srcStart.iY=aRect.iTl.iX;

		break;

	case CFbsDrawDevice::EOrientationRotated180:

		srcPixelStep=-1;

		scanLineLen=-scanLineLen;

		srcStart.iX=iSize.iWidth-1-aRect.iTl.iX;

		srcStart.iY=iSize.iHeight-1-aRect.iTl.iY;

		break;

	case CFbsDrawDevice::EOrientationRotated270:

		srcPixelStep=-scanLineLen;

		scanLineLen=1;

		srcStart.iX=aRect.iTl.iY;

		srcStart.iY=iSize.iHeight-1-aRect.iTl.iX;

		break;

		}

	TUint16* srcePtr = CDrawSixteenBppBitmapCommon::PixelAddress(srcStart.iX,srcStart.iY);

	TUint16* srcePtrLimit = srcePtr + aRect.Width()*srcPixelStep;

	TInt rowMax = aRect.iTl.iY+aRect.Height();

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

		{

		TUint16* tempSrcePtr = srcePtr;

		TUint8* destPixel = WinPixelAddress(aRect.iTl.iX,row);

		while (tempSrcePtr != srcePtrLimit)

			{

			destPixel[0] = TUint8((*tempSrcePtr & 0x00f));

			destPixel[0] |= destPixel[0] << 4;

			destPixel[1] = TUint8((*tempSrcePtr & 0x0f0));

			destPixel[1] |= destPixel[1] >> 4;

			destPixel[2] = TUint8((*tempSrcePtr & 0xf00)>>4);

			destPixel[2] |= destPixel[2] >> 4;	

			tempSrcePtr+=srcPixelStep;

			destPixel += 3;

			}

		srcePtr += scanLineLen;

		srcePtrLimit += scanLineLen;

		}

	}