graphicsdeviceinterface/screendriver/smomap/scnew.cpp
changeset 0 5d03bc08d59c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graphicsdeviceinterface/screendriver/smomap/scnew.cpp	Tue Feb 02 01:47:50 2010 +0200
@@ -0,0 +1,201 @@
+// 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;
+	}