// Copyright (c) 2003-2009 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 16 bpp color screen.

// Include files                                                   

// 

//

/**

 @file

*/

/********************************************************************/

#include <hal.h>

#include <e32std.h>

#include <bitdraw.h>

#include "scdraw.h"

/********************************************************************/

/*  Implementation of CDrawSixteenBppScreenBitmap class             */

/********************************************************************/

void CDrawSixteenBppScreenBitmap::SetSize(const TSize& aSize) 

	{

    CDrawBitmap::SetSize(aSize);

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

	iLongWidth = iScanLineWords *2;

	}

void CDrawSixteenBppScreenBitmap::SetDisplayMode(CFbsDrawDevice* aDrawDevice)

	{

	CopyOldSettings(aDrawDevice) ;

	InitScreen() ;

	}

TInt CDrawSixteenBppScreenBitmap::HorzTwipsPerThousandPixels() const

	{

	if (iSize.iWidth == 0)

		return 0 ;

	TMachineInfoV1Buf miBuf ;

	UserHal::MachineInfo(miBuf) ;

	return miBuf().iPhysicalScreenSize.iWidth * 1000 / iSize.iWidth ;

	}

TInt CDrawSixteenBppScreenBitmap::VertTwipsPerThousandPixels() const

	{

	if (iSize.iHeight == 0)

		return 0 ;

	TMachineInfoV1Buf miBuf ;

	UserHal::MachineInfo(miBuf) ;

	return miBuf().iPhysicalScreenSize.iHeight * 1000 / iSize.iHeight ;

	}

/**

This function initialize the palette. In this mode, there is no palette

defined

*/

TInt CDrawSixteenBppScreenBitmap::InitScreen()

	{

	return KErrNone ;

	}

/**

Constructs the CDrawSixteenBppScreenBitmap object.

@param aScreenNo Screen number. It will be used in HAL::Get() calls.

@param aBitmapAddress The screen memory address.

@param aSize Screen size

@return System-wide error codes, KErrNone if the construction was successfull.

*/

TInt CDrawSixteenBppScreenBitmap::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;

	CDrawBitmap::iScanLineWords = linepitchInBytes / 4;

	ret = CDrawSixteenBppBitmap::Construct(aSize);

	if (ret != KErrNone)

		return ret ;

	/* Set the pointer on the first pixel */

	TInt offsetToFirstPixel = displayMode;

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

	if (ret != KErrNone)

		return ret;

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

	return KErrNone ;

	}

/**

Define the screen orientation available

*/

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

	{

	aOrientation[EOrientationNormal]     = ETrue ;

	aOrientation[EOrientationRotated90]  = ETrue ;

	aOrientation[EOrientationRotated180] = ETrue ;

	aOrientation[EOrientationRotated270] = ETrue ;

	}

/**

Set the current display orientation

*/

TBool CDrawSixteenBppScreenBitmap::SetOrientation(TOrientation aOrientation)

	{

	iOrientation = aOrientation ;

	return ETrue ;

	}