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os/graphics/graphicsdeviceinterface/screendriver/swins/SCCOL32A.CPP
author sl
Tue, 10 Jun 2014 14:32:02 +0200
changeset 1 260cb5ec6c19
permissions -rw-r--r--
Update contrib. 
     1 // Copyright (c) 2004-2009 Nokia Corporation and/or its subsidiary(-ies).

     2 // All rights reserved.

     3 // This component and the accompanying materials are made available

     4 // under the terms of "Eclipse Public License v1.0"

     5 // which accompanies this distribution, and is available

     6 // at the URL "http://www.eclipse.org/legal/epl-v10.html".

     7 //

     8 // Initial Contributors:

     9 // Nokia Corporation - initial contribution.

    10 //

    11 // Contributors:

    12 //

    13 // Description:

    14 //

    15 

    16 #include "SCDRAW.H"

    17 #include "_WININC.H"

    18 

    19 TInt CDrawThirtyTwoBppScreenBitmapAlpha::InitScreen()

    20 	{

    21 	TRect drawRect;

    22 	GetDrawRect(drawRect);

    23 	RWindows* window = ::WindowHandler(iScreenNo);

    24 	window->iDisplayMode = DisplayMode();

    25 	window->iEpocBitmapSize = drawRect.Size();

    26 	window->iEpocBitmapLinePitch = iScanLineWords * 4;

    27 

    28 	return KErrNone;

    29 	}

    30 

    31 TBool CDrawThirtyTwoBppScreenBitmapAlpha::SetOrientation(TOrientation aOrientation)

    32 	{

    33 	if (aOrientation == iEmulatorOrientation)

    34 		return ETrue;

    35 

    36 	SetScreenOrientation(aOrientation);

    37 	iEmulatorOrientation = aOrientation;

    38 	iOrientation = aOrientation ;

    39 	return ETrue;

    40 	}

    41 

    42 void CDrawThirtyTwoBppScreenBitmapAlpha::UpdateRect(const TRect& aRect) const

    43 	{

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

    45 #if defined(_DEBUG)

    46 	if (iOrientation&1)

    47 		{

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

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

    50 		}

    51 	else

    52 		{

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

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

    55 		}

    56 #endif

    57 	TInt scanLineLen=iLongWidth*4;

    58 	TInt srcPixelStep=4;

    59 	TPoint srcStart(aRect.iTl);

    60 	switch(iOrientation)

    61 		{

    62 	case CFbsDrawDevice::EOrientationRotated90:

    63 		srcPixelStep=scanLineLen;

    64 		scanLineLen=-4;

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

    66 		srcStart.iY=aRect.iTl.iX;

    67 		break;

    68 	case CFbsDrawDevice::EOrientationRotated180:

    69 		srcPixelStep=-4;

    70 		scanLineLen=-scanLineLen;

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

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

    73 		break;

    74 	case CFbsDrawDevice::EOrientationRotated270:

    75 		srcPixelStep=-scanLineLen;

    76 		scanLineLen=4;

    77 		srcStart.iX=aRect.iTl.iY;

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

    79 		break;

    80 		}

    81 	TUint8* srcePtr = (TUint8*)PixelAddress(srcStart.iX,srcStart.iY);

    82 	TUint8* srcePtrLimit = srcePtr + aRect.Width()*srcPixelStep;

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

    84 	srcPixelStep-=3;	// as we increment while reading it

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

    86 		{

    87 		TUint8* tempSrcePtr = srcePtr;

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

    89 

    90 		while (tempSrcePtr != srcePtrLimit)

    91  			{

    92 			*destPixel++=*tempSrcePtr++;

    93 			*destPixel++=*tempSrcePtr++;

    94 			*destPixel++=*tempSrcePtr++;

    95 			tempSrcePtr += srcPixelStep;

    96  			}

    97  		srcePtr+=scanLineLen;

    98  		srcePtrLimit+=scanLineLen;

    99 		}

   100 	}
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