// 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 functions that create the screen class depending

 // on the screen type.

 // Include files                                                   

 // 

 //

 /**

  @file

 */

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

 #include <bitdraw.h>

 #include "scdraw.h"

 #include <hal.h>

 #include "ScreenInfo.h"

 #include <graphics/gdi/gdiconsts.h>

 /**

 Creates an instance of CFbsDrawDevice class.

 @param aScreenNo Screen number

 @param aDispMode Display mode

 @param aScreenInfo Screen parameters: video memory address and screen size

 @return A pointer to the created CFbsDrawDevice object

 @leave System-wide error code including KErrNoMemory

 @internalComponent

 */

 static CFbsDrawDevice* CreateInstanceL(TInt aScreenNo,

 									   TDisplayMode aDispMode,

 									   const TScreenInfo& aScreenInfo)

 	{

 	CFbsDrawDevice* drawDevice = NULL;

 	TInt bpp;

 	if(HAL::Get(aScreenNo, HALData::EDisplayMode, bpp) != KErrNone)

 		{

 		User::Leave(KErrNotSupported);

 		}

 	if(HAL::Get(aScreenNo, HALData::EDisplayBitsPerPixel, bpp) != KErrNone)

 		{

 		User::Leave(KErrNotSupported);

 		}

     //Switch the display mode, call the construtor of the class defined

     //in the ScmonXX.cpp or SccolXX.cpp file.

 	switch(aDispMode)

 		{

 	case EColor256: // 8 Bpp color mode

 		if(bpp == 8)

 			{

 			drawDevice = new (ELeave) CDrawEightBppScreenBitmapColor;

 			CleanupStack::PushL(drawDevice) ;

 			User::LeaveIfError(((CDrawEightBppScreenBitmapColor*)drawDevice)->ConstructScreenL(

                                                             aScreenNo,

 															aScreenInfo.iAddress, 

 															aScreenInfo.iSize));

 			}

 		else

 			{

 			User::Leave(KErrNotSupported);

 			}

 		break;

 	case EColor64K: // 16 Bpp color mode

 		if(bpp == 16)

 			{

 			drawDevice = new (ELeave) CDrawSixteenBppScreenBitmap;

 			CleanupStack::PushL(drawDevice);

 			User::LeaveIfError(((CDrawSixteenBppScreenBitmap*)drawDevice)->ConstructScreenL(

                                                             aScreenNo,

 															aScreenInfo.iAddress, 

 															aScreenInfo.iSize));

 			}

 		else

 			{

 			User::Leave(KErrNotSupported);

 			}

 		break;

    	case EColor16MU: // 24 unpacked Bpp color mode

 		if((bpp == 24 || bpp == 32) && aDispMode == CFbsDrawDevice::DisplayMode16M()) 	//there is some "ambiguity" about 24 and 32 bit modes... 

 	//They are both byte per color component, and both actually have 32 bits per pixel memory use.

 			{

 			drawDevice = new (ELeave) CDrawUTwentyFourBppScreenBitmap;

 			CleanupStack::PushL(drawDevice);

 			User::LeaveIfError(((CDrawUTwentyFourBppScreenBitmap*)drawDevice)->ConstructScreenL(

                                                             aScreenNo,

 															aScreenInfo.iAddress, 

 															aScreenInfo.iSize));

 			}

 		else

 			{

 			User::Leave(KErrNotSupported);

 			}

 		break;

 	 case EColor16MA: // 32 Bpp color mode

 		if((bpp == 24 || bpp == 32) && aDispMode == CFbsDrawDevice::DisplayMode16M())  	//there is some "ambiguity" about 24 and 32 bit modes... 

 	//They are both byte per color component, and both actually have 32 bits per pixel memory use.

 			{

 			drawDevice = new (ELeave) CDrawThirtyTwoBppScreenBitmapAlpha;

 			CleanupStack::PushL(drawDevice);

 			User::LeaveIfError(((CDrawThirtyTwoBppScreenBitmapAlpha*)drawDevice)->ConstructScreenL(

                                                             aScreenNo,

 															aScreenInfo.iAddress, 

 															aScreenInfo.iSize));

 			}

 		else

 			{

 			User::Leave(KErrNotSupported);

 			}

 		break;

 	case EColor16MAP: // 32 Bpp color mode

 		if((bpp == 24 || bpp == 32) && aDispMode == CFbsDrawDevice::DisplayMode16M()) 	//there is some "ambiguity" about 24 and 32 bit modes... 

 	//They are both byte per color component, and both actually have 32 bits per pixel memory use.

 			{

 			drawDevice = new (ELeave) CDrawThirtyTwoBppScreenBitmapAlphaPM;

 			CleanupStack::PushL(drawDevice);

 			User::LeaveIfError(((CDrawThirtyTwoBppScreenBitmapAlphaPM*)drawDevice)->ConstructScreenL(

                                                             aScreenNo,

 															aScreenInfo.iAddress, 

 															aScreenInfo.iSize));

 			}

 		else

 			{

 			User::Leave(KErrNotSupported);

 			}

 		break;

 	default:

 		User::Leave(KErrNotSupported);

 		}

 	CleanupStack::Pop(drawDevice);

     return drawDevice;

 	}

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

 /*  Implementation of CFbsDrawDevice class                          */

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

 /**

 This function calls the correct constructor in function of the display mode.

 @param aInfo, Structure of the LCD info

 @param aDispMode, display mode   

 @return A pointer to just created screen device, which implements CFbsDrawDevice interface

 @deprecated Use CFbsDrawDevice::NewScreenDeviceL(TInt aScreenNo, TDisplayMode aDispMode)

 */

 EXPORT_C CFbsDrawDevice* CFbsDrawDevice::NewScreenDeviceL(TScreenInfoV01 aInfo, TDisplayMode aDispMode)

 	{

     __ASSERT_ALWAYS(aInfo.iScreenAddressValid, Panic(EScreenDriverPanicInvalidWindowHandle));

 	TScreenInfo screenInfo(aInfo.iScreenAddress, aInfo.iScreenSize);

 	return ::CreateInstanceL(KDefaultScreenNo, aDispMode, screenInfo);

 	}

 /**

 Creates a new screen device instance, which implements CFbsDrawDevice interface.

 The method has to be implemented for each type of supported video hardware.

 @param aScreenNo Screen number

 @param aDispMode Requested display mode

 @return A pointer to just created screen device, which implements CFbsDrawDevice interface

 @leave KErrNoMemory Not enough memory

 	   KErrNotSupported The requested screen device type is not supported

 */

 EXPORT_C CFbsDrawDevice* CFbsDrawDevice::NewScreenDeviceL(TInt aScreenNo,

 														  TDisplayMode aDispMode)

 	{

 	TInt address = 0, width = 0, height = 0;

 	User::LeaveIfError(HAL::Get(aScreenNo, HALData::EDisplayMemoryAddress, address));

 	User::LeaveIfError(HAL::Get(aScreenNo, HALData::EDisplayXPixels, width));

 	User::LeaveIfError(HAL::Get(aScreenNo, HALData::EDisplayYPixels, height));

 	__ASSERT_ALWAYS(width > 0 && height > 0 && address != 0, Panic(EScreenDriverPanicInvalidHalValue));

 	TScreenInfo screenInfo(reinterpret_cast <TAny*> (address), TSize(width, height));

 	return ::CreateInstanceL(aScreenNo, aDispMode, screenInfo);

 	}

 /**

 Depending on the current graphics hardware this 

 will return one of the 16M video modes defined in

 TDisplayMode, or ENone if a 16M video mode is not supported.

 @see TDisplayMode

 @return	a 16M display mode or ENone.

 */

 EXPORT_C TDisplayMode CFbsDrawDevice::DisplayMode16M()

 	{

 //	return ENone;

 	return EColor16MA;

 	}