// Copyright (c) 2007-2009 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:

// This module implements the class for a 32ap bpp color screen with premultiplied

// alpha.

// 

//

/**

 @file

*/

#include <hal.h>

#include <e32std.h>

#include <bitdraw.h>

#include "scdraw.h"

void CDrawThirtyTwoBppScreenBitmapAlphaPM::SetSize(const TSize& aSize) 

	{

    CDrawBitmap::SetSize(aSize);

    __ASSERT_DEBUG(iSize == aSize, User::Invariant());

	iLongWidth = iScanLineWords;

	}

void CDrawThirtyTwoBppScreenBitmapAlphaPM::SetDisplayMode(CFbsDrawDevice* aDrawDevice)

	{

	CopyOldSettings(aDrawDevice) ;

	InitScreen() ;

	}

TInt CDrawThirtyTwoBppScreenBitmapAlphaPM::HorzTwipsPerThousandPixels() const

	{

	if (iSize.iWidth == 0)

		return 0;

    TInt displayMode;

    TInt r = HAL::Get(iScreenNo, HAL::EDisplayMode, displayMode);

    if (r != KErrNone)

    	return 0;

    TInt width = displayMode;

    r = HAL::Get(iScreenNo, HAL::EDisplayXTwips, width);

	if (r != KErrNone)

    	return 0;

    return (width * 1000) / iSize.iWidth;

	}

TInt CDrawThirtyTwoBppScreenBitmapAlphaPM::VertTwipsPerThousandPixels() const

	{

	if (iSize.iHeight == 0)

		return 0;

    TInt displayMode;

    TInt r = HAL::Get(iScreenNo, HAL::EDisplayMode, displayMode);

    if (r != KErrNone)

    	return 0;

    TInt height = displayMode;

    r = HAL::Get(iScreenNo, HAL::EDisplayYTwips, height);

    if (r != KErrNone)

    	return 0;

    return (height * 1000) / iSize.iHeight;

	}

TInt CDrawThirtyTwoBppScreenBitmapAlphaPM::InitScreen()

	{

	return KErrNone ;

	}

TInt CDrawThirtyTwoBppScreenBitmapAlphaPM::ConstructScreenL(TInt aScreenNo, TAny* aBitmapAddress, TSize aSize)

	{

	iScreenNo = aScreenNo;

    TInt displayMode;

	TInt ret = HAL::Get(aScreenNo, HALData::EDisplayMode, displayMode);

    if (ret != KErrNone)

    	return ret;

    TInt linepitchInBytes = displayMode;

    ret = HAL::Get(aScreenNo,HALData::EDisplayOffsetBetweenLines,linepitchInBytes);

    if (ret != KErrNone)

    	return ret;

	iScanLineWords = linepitchInBytes / 4;

	ret = CDrawThirtyTwoBppBitmapAlphaPM::Construct(aSize);

	if (ret != KErrNone)

		return ret;

	TInt offsetToFirstPixel = displayMode;

	ret = HAL::Get(aScreenNo,HALData::EDisplayOffsetToFirstPixel, offsetToFirstPixel);

	if (ret != KErrNone)

		return ret;

	iBits = (TUint32*)((TUint32)aBitmapAddress + offsetToFirstPixel);

	return KErrNone;

	}

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

	{

	aOrientation[EOrientationNormal]     = ETrue ;

	aOrientation[EOrientationRotated90]  = ETrue ;

	aOrientation[EOrientationRotated180] = ETrue ;

	aOrientation[EOrientationRotated270] = ETrue ;

	}

TBool CDrawThirtyTwoBppScreenBitmapAlphaPM::SetOrientation(TOrientation aOrientation)

	{

	iOrientation = aOrientation ;

	return ETrue ;

	}