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examples/Graphics/WS/transparent/eventhandler.cpp

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// Copyright (c) 2007-2009 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 encapsulates both issuing a request for getting pointer events to an asynchronous service provider
// and handling the completed requests.
//



#include "transparent.h"

CEventHandler* CEventHandler::NewL(RWsSession& aWs)
        {
        CEventHandler* eventHandler = new(ELeave) CEventHandler(aWs);
        CleanupStack::PushL(eventHandler);
        eventHandler->ConstructL();
        CleanupStack::Pop(eventHandler);
        return eventHandler;
        }

CEventHandler::CEventHandler(RWsSession& aWs) : CActive(CActive::EPriorityStandard),iWs(aWs)
        {
        }

void CEventHandler ::ConstructL()
        {
        CActiveScheduler::Add(this);
        }

CEventHandler ::~CEventHandler ()
        {
        Cancel();
        }

void CEventHandler ::DoCancel()
        {
        iWs.EventReadyCancel();
        }

void CEventHandler::RunL()
        {
        iWs.GetEvent(iWsEvent);
        TInt eventType = iWsEvent.Type();

        // Take action for the event that occurred
        switch (eventType)
                {
                // Events global within window group
                case EEventNull:
                        break;
                case EEventPointer:
                        {
                        TPointerEvent& pointerEvent = *iWsEvent.Pointer();
                        HandlePointerEvent(pointerEvent);
                        }
                        break;
                }
        // Maintain outstanding request
        IssueRequest();
        }

void CEventHandler::HandlePointerEvent(TPointerEvent& aPointerEvent)
        {
        switch (aPointerEvent.iType)
                {
                case TPointerEvent::EButton1Down:
                        {
                        InfoMessage(KEventButton1Pressed);
                        break;
                        }
                        case TPointerEvent::EButton2Down:
                        {
                        InfoMessage(KEventButton2Pressed);
                        break;
                        }
                        case TPointerEvent::EButton3Down:
                        {
                        InfoMessage(KEventButton3Pressed);
                        break;
                        }
                        default:
                        {
                        break;
                        }
                }
        }

void CEventHandler::IssueRequest()
        {
        if(!IsActive())
                {
                iWs.EventReady(&iStatus);
                SetActive();
                }
        }

void CEventHandler::InfoMessage(const TDesC& aMsg)
        {
        CEikonEnv *obj = CEikonEnv::Static();
        obj->InfoMsg(aMsg);
        }

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Copyright ©2010 Nokia Corporation and/or its subsidiary(-ies).
All rights reserved. Unless otherwise stated, these materials are provided under the terms of the Eclipse Public License v1.0.