// Copyright (c) 2008-2009 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:

 //

 /**

  @file

  @test

  @internalComponent - Internal Symbian test code

 */

 #include "bufferdrawer.h"

 #include <s32mem.h>

 #include <s32strm.h>

 #include <fbs.h>

 #include <bitdev.h>

 #include <bitstd.h>

 #include <graphics/wsgraphicscontext.h>

 #include <graphics/wsuibuffer.h>

 // CWsGraphicDrawer	

 CWsBufferGraphicDrawer* CWsBufferGraphicDrawer::NewL()

 	{

 	return new(ELeave) CWsBufferGraphicDrawer;	

 	}

 CWsBufferGraphicDrawer::~CWsBufferGraphicDrawer()

 	{

 	}

 void CWsBufferGraphicDrawer::ConstructL(MWsGraphicDrawerEnvironment& aEnv, const TGraphicDrawerId& aId, MWsClient& aOwner, const TDesC8& /*aData*/)

 	{

 	BaseConstructL(aEnv, aId, aOwner);

  	// default white line number

 	iWhiteLinePos = 0;

  	}

 void CWsBufferGraphicDrawer::HandleMessage(const TDesC8& aData)

 	{

 	TInt linePos = aData[0];

 	DoUpdateWhiteLinePos(linePos);

 	}

 void CWsBufferGraphicDrawer::DoUpdateWhiteLinePos(TInt aWhiteLinePos)

 	{

 	iWhiteLinePos = aWhiteLinePos;

 	// Invalidate the redrawing

 	Invalidate();

 	}

 void CWsBufferGraphicDrawer::DoDraw(MWsGc& aGc, const TRect& aRect, const TDesC8& /*aData*/) const

 	{

 	MWsGraphicsContext* context = static_cast<MWsGraphicsContext*>(aGc.ResolveObjectInterface(KMWsGraphicsContext));

 	//Draw a filled rect with the chosen color

 	context->Push();

 	context->SetBrushStyle(MWsGraphicsContext::ESolidBrush);

 	context->SetBrushColor(KRgbBlue);

 	context->DrawRect(aRect);

 	context->Pop();

 	//Obtain access to the screen/OSB buffer

 	MWsUiBuffer* buffer = static_cast<MWsUiBuffer*>(aGc.ResolveObjectInterface(KMWsUiBufferInterfaceId));

 	TAny* data;

 	TInt stride;

 	TInt err = buffer->MapReadWrite(data, stride);

 	if (err == KErrNone)

 		{

 		//Fill the chosen line with white

 		TUint8* scanLine = static_cast<TUint8*>(data);

 		scanLine += stride * iWhiteLinePos;

 		Mem::Fill(scanLine, stride, 0xFF);

 		buffer->Unmap();

 		}

 	}