windowing/windowserver/nonnga/stdplugin/fader.cpp
author William Roberts <williamr@symbian.org>
Thu, 03 Jun 2010 17:39:46 +0100
branchNewGraphicsArchitecture
changeset 87 0709f76d91e5
parent 0 5d03bc08d59c
permissions -rw-r--r--
Add MMP files to build libOpenVG_sw.lib which uses LINKAS to redirect to libOpenVG.dll (and the same for libEGL_sw.lib and libOpenVGU_sw.lib). Only the libEGL_sw.lib redirection isn't activated - this can't happen until there is a merged libEGL.dll which supports the OpenWF synchronisation and also implements the graphical support functions. The overall aim is to eliminate the *_sw.dll implementations, at least as a compile-time way of choosing a software-only implementation.The correct way to choose is to put the right set of libraries into a ROM with suitable renaming, and in the emulator to use the "switching DLL" technique to pick the right set. As the Symbian Foundation doesn't have any alternative implementations, we don't need the switching DLLs and we can build directly to the correct name.

// Copyright (c) 1995-2009 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:
//

#include "fader.h"

_LIT(CFaderName, "wsfader");
    
CFader* CFader::CreateL()
	{
	return new(ELeave) CFader;
	}
	
void CFader::ConstructL(MWsGraphicDrawerEnvironment& aEnv,const TDesC8& /*aData*/)
	{
	BaseConstructL(aEnv);
	//Default bitgdi fading parameters
	iBlackMap=128;
	iWhiteMap=255;
	}
	
CFader::CFader()
	{
	}
	
CFader::~CFader()
	{
	}

//Default fading plugin simply uses bitgdi to perform fading
void CFader::FadeArea(CFbsBitGc* aBitGc,const TRegion * aRegion)
	{
  	aBitGc->Reset();
  	aBitGc->SetFadingParameters(iBlackMap,iWhiteMap);
	aBitGc->FadeArea(aRegion);
	}
	
//Default fading plugin expects two TUint8's describing the black/white map 
//as possible fading parameters
void CFader::SetFadingParameters(const TDesC8& aData)
  	{
	TPckgBuf<TFadingParams> buf;
	buf.Copy(aData);
	TFadingParams parameters = buf();

	iBlackMap = parameters.blackMap;
	iWhiteMap = parameters.whiteMap;
  	}

TAny* CFader::ResolveObjectInterface(TUint aTypeId)
	{
	switch (aTypeId)
		{
		case MWsFader::EWsObjectInterfaceId:
			return static_cast<MWsFader*>(this);
		}

	return NULL;
	}

const TDesC& CFader::PluginName() const
	{
	return CFaderName;
	}