windowing/windowserver/nonnga/stdplugin/fader.cpp
changeset 0 5d03bc08d59c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/windowing/windowserver/nonnga/stdplugin/fader.cpp	Tue Feb 02 01:47:50 2010 +0200
@@ -0,0 +1,75 @@
+// 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;
+	}