sl@0: // Copyright (c) 2003-2009 Nokia Corporation and/or its subsidiary(-ies).
sl@0: // All rights reserved.
sl@0: // This component and the accompanying materials are made available
sl@0: // under the terms of "Eclipse Public License v1.0"
sl@0: // which accompanies this distribution, and is available
sl@0: // at the URL "http://www.eclipse.org/legal/epl-v10.html".
sl@0: //
sl@0: // Initial Contributors:
sl@0: // Nokia Corporation - initial contribution.
sl@0: //
sl@0: // Contributors:
sl@0: //
sl@0: // Description:
sl@0: // This module implements the functions that create the screen class depending
sl@0: // on the screen type.
sl@0: // Include files                                                   
sl@0: // 
sl@0: //
sl@0: 
sl@0: /**
sl@0:  @file
sl@0: */
sl@0: /********************************************************************/
sl@0: #include <bitdraw.h>
sl@0: #include "scdraw.h"
sl@0: #include <hal.h>
sl@0: #include "ScreenInfo.h"
sl@0: #include <graphics/gdi/gdiconsts.h>
sl@0: 
sl@0: /**
sl@0: Creates an instance of CFbsDrawDevice class.
sl@0: @param aScreenNo Screen number
sl@0: @param aDispMode Display mode
sl@0: @param aScreenInfo Screen parameters: video memory address and screen size
sl@0: @return A pointer to the created CFbsDrawDevice object
sl@0: @leave System-wide error code including KErrNoMemory
sl@0: @internalComponent
sl@0: */
sl@0: static CFbsDrawDevice* CreateInstanceL(TInt aScreenNo,
sl@0: 									   TDisplayMode aDispMode,
sl@0: 									   const TScreenInfo& aScreenInfo)
sl@0: 	{
sl@0: 	CFbsDrawDevice* drawDevice = NULL;
sl@0: 
sl@0: 	TInt bpp;
sl@0: 	if(HAL::Get(aScreenNo, HALData::EDisplayMode, bpp) != KErrNone)
sl@0: 		{
sl@0: 		User::Leave(KErrNotSupported);
sl@0: 		}
sl@0: 	if(HAL::Get(aScreenNo, HALData::EDisplayBitsPerPixel, bpp) != KErrNone)
sl@0: 		{
sl@0: 		User::Leave(KErrNotSupported);
sl@0: 		}
sl@0:    
sl@0:     //Switch the display mode, call the construtor of the class defined
sl@0:     //in the ScmonXX.cpp or SccolXX.cpp file.
sl@0: 	switch(aDispMode)
sl@0: 		{
sl@0: 	case EColor256: // 8 Bpp color mode
sl@0: 		if(bpp == 8)
sl@0: 			{
sl@0: 			drawDevice = new (ELeave) CDrawEightBppScreenBitmapColor;
sl@0: 			CleanupStack::PushL(drawDevice) ;
sl@0: 			User::LeaveIfError(((CDrawEightBppScreenBitmapColor*)drawDevice)->ConstructScreenL(
sl@0:                                                             aScreenNo,
sl@0: 															aScreenInfo.iAddress, 
sl@0: 															aScreenInfo.iSize));
sl@0: 			}
sl@0: 		else
sl@0: 			{
sl@0: 			User::Leave(KErrNotSupported);
sl@0: 			}
sl@0: 		break;
sl@0: 
sl@0: 	case EColor64K: // 16 Bpp color mode
sl@0: 		if(bpp == 16)
sl@0: 			{
sl@0: 			drawDevice = new (ELeave) CDrawSixteenBppScreenBitmap;
sl@0: 			CleanupStack::PushL(drawDevice);
sl@0: 			User::LeaveIfError(((CDrawSixteenBppScreenBitmap*)drawDevice)->ConstructScreenL(
sl@0:                                                             aScreenNo,
sl@0: 															aScreenInfo.iAddress, 
sl@0: 															aScreenInfo.iSize));
sl@0: 			}
sl@0: 		else
sl@0: 			{
sl@0: 			User::Leave(KErrNotSupported);
sl@0: 			}
sl@0: 		break;
sl@0:    
sl@0:    	case EColor16MU: // 24 unpacked Bpp color mode
sl@0: 		if((bpp == 24 || bpp == 32) && aDispMode == CFbsDrawDevice::DisplayMode16M()) 	//there is some "ambiguity" about 24 and 32 bit modes... 
sl@0: 	//They are both byte per color component, and both actually have 32 bits per pixel memory use.
sl@0: 			{
sl@0: 			drawDevice = new (ELeave) CDrawUTwentyFourBppScreenBitmap;
sl@0: 			CleanupStack::PushL(drawDevice);
sl@0: 			User::LeaveIfError(((CDrawUTwentyFourBppScreenBitmap*)drawDevice)->ConstructScreenL(
sl@0:                                                             aScreenNo,
sl@0: 															aScreenInfo.iAddress, 
sl@0: 															aScreenInfo.iSize));
sl@0: 			}
sl@0: 		else
sl@0: 			{
sl@0: 			User::Leave(KErrNotSupported);
sl@0: 			}
sl@0: 		break;
sl@0: 	
sl@0: 	 case EColor16MA: // 32 Bpp color mode
sl@0: 		if((bpp == 24 || bpp == 32) && aDispMode == CFbsDrawDevice::DisplayMode16M())  	//there is some "ambiguity" about 24 and 32 bit modes... 
sl@0: 	//They are both byte per color component, and both actually have 32 bits per pixel memory use.
sl@0: 			{
sl@0: 			drawDevice = new (ELeave) CDrawThirtyTwoBppScreenBitmapAlpha;
sl@0: 			CleanupStack::PushL(drawDevice);
sl@0: 			User::LeaveIfError(((CDrawThirtyTwoBppScreenBitmapAlpha*)drawDevice)->ConstructScreenL(
sl@0:                                                             aScreenNo,
sl@0: 															aScreenInfo.iAddress, 
sl@0: 															aScreenInfo.iSize));
sl@0: 			}
sl@0: 		else
sl@0: 			{
sl@0: 			User::Leave(KErrNotSupported);
sl@0: 			}
sl@0: 		break;
sl@0: 		
sl@0: 	case EColor16MAP: // 32 Bpp color mode
sl@0: 		if((bpp == 24 || bpp == 32) && aDispMode == CFbsDrawDevice::DisplayMode16M()) 	//there is some "ambiguity" about 24 and 32 bit modes... 
sl@0: 	//They are both byte per color component, and both actually have 32 bits per pixel memory use.
sl@0: 			{
sl@0: 			drawDevice = new (ELeave) CDrawThirtyTwoBppScreenBitmapAlphaPM;
sl@0: 			CleanupStack::PushL(drawDevice);
sl@0: 			User::LeaveIfError(((CDrawThirtyTwoBppScreenBitmapAlphaPM*)drawDevice)->ConstructScreenL(
sl@0:                                                             aScreenNo,
sl@0: 															aScreenInfo.iAddress, 
sl@0: 															aScreenInfo.iSize));
sl@0: 			}
sl@0: 		else
sl@0: 			{
sl@0: 			User::Leave(KErrNotSupported);
sl@0: 			}
sl@0: 		break;
sl@0: 
sl@0: 	default:
sl@0: 		User::Leave(KErrNotSupported);
sl@0: 		}
sl@0: 
sl@0: 	CleanupStack::Pop(drawDevice);
sl@0:     return drawDevice;
sl@0: 	}
sl@0: 
sl@0: 
sl@0: /********************************************************************/
sl@0: /*  Implementation of CFbsDrawDevice class                          */
sl@0: /********************************************************************/
sl@0: 
sl@0: /**
sl@0: This function calls the correct constructor in function of the display mode.
sl@0: @param aInfo, Structure of the LCD info
sl@0: @param aDispMode, display mode   
sl@0: @return A pointer to just created screen device, which implements CFbsDrawDevice interface
sl@0: @deprecated Use CFbsDrawDevice::NewScreenDeviceL(TInt aScreenNo, TDisplayMode aDispMode)
sl@0: */
sl@0: EXPORT_C CFbsDrawDevice* CFbsDrawDevice::NewScreenDeviceL(TScreenInfoV01 aInfo, TDisplayMode aDispMode)
sl@0: 	{
sl@0:     __ASSERT_ALWAYS(aInfo.iScreenAddressValid, Panic(EScreenDriverPanicInvalidWindowHandle));
sl@0: 	TScreenInfo screenInfo(aInfo.iScreenAddress, aInfo.iScreenSize);
sl@0: 	return ::CreateInstanceL(KDefaultScreenNo, aDispMode, screenInfo);
sl@0: 	}
sl@0: 
sl@0: /**
sl@0: Creates a new screen device instance, which implements CFbsDrawDevice interface.
sl@0: The method has to be implemented for each type of supported video hardware.
sl@0: @param aScreenNo Screen number
sl@0: @param aDispMode Requested display mode
sl@0: @return A pointer to just created screen device, which implements CFbsDrawDevice interface
sl@0: @leave KErrNoMemory Not enough memory
sl@0: 	   KErrNotSupported The requested screen device type is not supported
sl@0: */
sl@0: EXPORT_C CFbsDrawDevice* CFbsDrawDevice::NewScreenDeviceL(TInt aScreenNo,
sl@0: 														  TDisplayMode aDispMode)
sl@0: 	{
sl@0: 	TInt address = 0, width = 0, height = 0;
sl@0: 	User::LeaveIfError(HAL::Get(aScreenNo, HALData::EDisplayMemoryAddress, address));
sl@0: 	User::LeaveIfError(HAL::Get(aScreenNo, HALData::EDisplayXPixels, width));
sl@0: 	User::LeaveIfError(HAL::Get(aScreenNo, HALData::EDisplayYPixels, height));
sl@0: 	__ASSERT_ALWAYS(width > 0 && height > 0 && address != 0, Panic(EScreenDriverPanicInvalidHalValue));
sl@0: 	TScreenInfo screenInfo(reinterpret_cast <TAny*> (address), TSize(width, height));
sl@0: 	return ::CreateInstanceL(aScreenNo, aDispMode, screenInfo);
sl@0: 	}
sl@0: 
sl@0: /**
sl@0: Depending on the current graphics hardware this 
sl@0: will return one of the 16M video modes defined in
sl@0: TDisplayMode, or ENone if a 16M video mode is not supported.
sl@0: @see TDisplayMode
sl@0: @return	a 16M display mode or ENone.
sl@0: */
sl@0: EXPORT_C TDisplayMode CFbsDrawDevice::DisplayMode16M()
sl@0: 	{
sl@0: //	return ENone;
sl@0: 	return EColor16MA;
sl@0: 	}