// 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 ;

 	}