sl@0: // Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies).
sl@0: // All rights reserved.
sl@0: // This component and the accompanying materials are made available
sl@0: // under the terms of "Eclipse Public License v1.0"
sl@0: // which accompanies this distribution, and is available
sl@0: // at the URL "http://www.eclipse.org/legal/epl-v10.html".
sl@0: //
sl@0: // Initial Contributors:
sl@0: // Nokia Corporation - initial contribution.
sl@0: //
sl@0: // Contributors:
sl@0: //
sl@0: // Description:
sl@0: //
sl@0: 
sl@0: #include "SCDRAW.H"
sl@0: #include "_WININC.H"
sl@0: 
sl@0: TInt CDrawTwelveBppScreenBitmap::InitScreen()
sl@0: 	{
sl@0: 	TRect drawRect;
sl@0: 	GetDrawRect(drawRect);
sl@0:     RWindows* window = ::WindowHandler(iScreenNo);
sl@0:     window->iDisplayMode = DisplayMode();
sl@0: 	window->iEpocBitmapSize = drawRect.Size();
sl@0: 	window->iEpocBitmapLinePitch = (iScanLineWords*4);
sl@0: 
sl@0: 	return KErrNone;
sl@0: 	}
sl@0: 
sl@0: TBool CDrawTwelveBppScreenBitmap::SetOrientation(TOrientation aOrientation)
sl@0: 	{
sl@0: 	if (aOrientation == iEmulatorOrientation)
sl@0: 		return ETrue;
sl@0: 
sl@0: 	SetScreenOrientation(aOrientation);
sl@0: 	iEmulatorOrientation = aOrientation;
sl@0: 	iOrientation = aOrientation ;
sl@0: 	return ETrue;
sl@0: 	}
sl@0: 
sl@0: void CDrawTwelveBppScreenBitmap::UpdateRect(const TRect& aRect) const
sl@0: 	{
sl@0: 	ASSERT(aRect.iTl.iX >= 0 && aRect.iTl.iY >= 0);
sl@0: #if defined(_DEBUG)
sl@0: 	if (iOrientation&1)
sl@0: 		{
sl@0: 		ASSERT(aRect.iBr.iX <= iSize.iHeight);
sl@0: 		ASSERT(aRect.iBr.iY <= iSize.iWidth);
sl@0: 		}
sl@0: 	else
sl@0: 		{
sl@0: 		ASSERT(aRect.iBr.iX <= iSize.iWidth);
sl@0: 		ASSERT(aRect.iBr.iY <= iSize.iHeight);
sl@0: 		}
sl@0: #endif
sl@0: 	TInt scanLineLen=iLongWidth;
sl@0: 	TInt srcPixelStep=1;
sl@0: 	TPoint srcStart(aRect.iTl);
sl@0: 	switch(iOrientation)
sl@0: 		{
sl@0: 	case CFbsDrawDevice::EOrientationRotated90:
sl@0: 		srcPixelStep=scanLineLen;
sl@0: 		scanLineLen=-1;
sl@0: 		srcStart.iX=iSize.iWidth-1-aRect.iTl.iY;
sl@0: 		srcStart.iY=aRect.iTl.iX;
sl@0: 		break;
sl@0: 	case CFbsDrawDevice::EOrientationRotated180:
sl@0: 		srcPixelStep=-1;
sl@0: 		scanLineLen=-scanLineLen;
sl@0: 		srcStart.iX=iSize.iWidth-1-aRect.iTl.iX;
sl@0: 		srcStart.iY=iSize.iHeight-1-aRect.iTl.iY;
sl@0: 		break;
sl@0: 	case CFbsDrawDevice::EOrientationRotated270:
sl@0: 		srcPixelStep=-scanLineLen;
sl@0: 		scanLineLen=1;
sl@0: 		srcStart.iX=aRect.iTl.iY;
sl@0: 		srcStart.iY=iSize.iHeight-1-aRect.iTl.iX;
sl@0: 		break;
sl@0: 		}
sl@0: 	TUint16* srcePtr = CDrawSixteenBppBitmapCommon::PixelAddress(srcStart.iX,srcStart.iY);
sl@0: 	TUint16* srcePtrLimit = srcePtr + aRect.Width()*srcPixelStep;
sl@0: 	TInt rowMax = aRect.iTl.iY+aRect.Height();
sl@0: 	for(TInt row = aRect.iTl.iY; row < rowMax; row++)
sl@0: 		{
sl@0: 		TUint16* tempSrcePtr = srcePtr;
sl@0: 		TUint8* destPixel = WinPixelAddress(aRect.iTl.iX,row);
sl@0: 
sl@0: 		while (tempSrcePtr != srcePtrLimit)
sl@0: 			{
sl@0: 			destPixel[0] = TUint8((*tempSrcePtr & 0x00f));
sl@0: 			destPixel[0] |= destPixel[0] << 4;
sl@0: 			destPixel[1] = TUint8((*tempSrcePtr & 0x0f0));
sl@0: 			destPixel[1] |= destPixel[1] >> 4;
sl@0: 			destPixel[2] = TUint8((*tempSrcePtr & 0xf00)>>4);
sl@0: 			destPixel[2] |= destPixel[2] >> 4;	
sl@0: 			
sl@0: 			tempSrcePtr+=srcPixelStep;
sl@0: 		
sl@0: 			destPixel += 3;
sl@0: 			}
sl@0: 
sl@0: 		srcePtr += scanLineLen;
sl@0: 		srcePtrLimit += scanLineLen;
sl@0: 		}
sl@0: 	}
sl@0: