controller.cpp

在symbian下用Visual C++开发的网络络天室的程序

// controller.cpp
//
// Copyright (c) 2000 Symbian Ltd.  All rights reserved.
//

#include "controller.h"
#include "appview.h"

#include "gdp.h"

#include <utf.h>

#include <eikenv.h>
#include <eiklabel.h>

enum TPanic {
	ESetupMeNotBlank,
	EInitiateNotBlank,
	EListenNotBlank,
	EReceiveWhenBlank,
	ESendNotBound,
	};

static void Panic(TInt aPanic)
	{
	_LIT(KPanicCategory,"RGCPCHAT control");
	User::Panic(KPanicCategory, aPanic);
	}

// Controller

void CGameController::ConstructL(CGameEngine* aEngine, CRgcpSession* aRgcp, CEikAppUi* aAppUi)
	{
	// store cached pointers
	iEngine=aEngine;
	iRgcp=aRgcp;
	iAppUi=aAppUi;
	iEnv=CEikonEnv::Static();
	// say we're the RGCP handler
	iRgcp->SetHandler(this);
	// construct app view
    iAppView=new(ELeave) CGameAppView;
    iAppView->ConstructL(iEngine, iAppUi->ClientRect());
	iAppUi->AddToStackL(iAppView);
	}

CGameController::~CGameController()
	{
	iAppUi->RemoveFromStack(iAppView);
    delete iAppView;
	}

// session control

void CGameController::Reset() // set to blank, loopback, my-address from document
	{
	if (iRgcp->IsBlank())
		return;
	iEngine->Reset();
	iRgcp->Terminate();
	iRgcp->SetGdpProtocolL(KGdpLoopbackUid);
	SetEngineL(iEngine);
	}

void CGameController::SetupMeL(TUid aProtocol)
	{
	__ASSERT_ALWAYS(iRgcp->IsBlank(), Panic(ESetupMeNotBlank));
	iRgcp->SetGdpProtocolL(aProtocol);
	}

// The underlying protocol uses 8 bit descriptors. We exchange ascii text messages
// and ascii text network addresses, so we use a simple scheme to convert between the
// two sizes. Within the app & engine we keep cached copies of info in the native size
HBufC16* NewHBufC16LC(const TDesC8& aDataBuffer)
	{
	HBufC16* buffer = HBufC16::NewLC(aDataBuffer.Length());
	TPtr16 buffer_ptr(buffer->Des());
	buffer_ptr.Copy(aDataBuffer);
	return buffer;
	}


HBufC8* NewHBufC8LC(const TDesC16& aDataBuffer)
	{
	HBufC8* buffer = HBufC8::NewLC(aDataBuffer.Length());
	TPtr8 buffer_ptr(buffer->Des());
	buffer_ptr.Copy(aDataBuffer);
	return buffer;
	}

void CGameController::InitiateL(const TDesC& aOtherAddress)
	{
	__ASSERT_ALWAYS(iRgcp->IsBlank(), Panic(EInitiateNotBlank));
	HBufC8* addr8 = NewHBufC8LC(aOtherAddress);
	iRgcp->Initiate(*addr8);
	CleanupStack::PopAndDestroy();
	}

void CGameController::Listen()
	{
	__ASSERT_ALWAYS(iRgcp->IsBlank(), Panic(EListenNotBlank));
	iRgcp->Listen();
	}

void CGameController::GetOtherAddress(TDes& aAddress)
	{
	TBuf8<KMaxGsdpAddress> address;
	iRgcp->Gsdp().GetOtherAddress(address);
	aAddress.Copy(address);
	}


// model update

void CGameController::SetEngineL(CGameEngine* aEngine)
	{
	iEngine=aEngine;
	iAppView->SetEngineL(iEngine);
	}

void CGameController::SetRgcpL(CRgcpSession* aRgcp)
	{
	iRgcp=aRgcp;
	iRgcp->SetHandler(this);
	}

// MRgcpHandler stuff

void CGameController::RgcpHandleResponse(TInt /* aOpcode */, const TDesC8& /* aData */)
	{
	}

void CGameController::RgcpHandleRequest(TInt aOpcode, const TDesC8& aData)
	{
	if (aOpcode==KGameOpcodeText)
		{
		const TInt KRGCPMaxDataSize = 126;

		TBuf<KRGCPMaxDataSize> unicodeData;
		TInt err = CnvUtfConverter::ConvertToUnicodeFromUtf8(unicodeData, aData);
		if (err>0)
			iEnv->InfoMsg(R_GAME_CONVERT_TO_UNICODE);

		iEngine->SetLastReceivedL(unicodeData); // !! not unicode-safe
		User::Beep(440,500000);
		iAppView->iLastReceivedLabel->SetTextL(unicodeData); // !! not unicode-safe
		iAppView->DrawNow();
		}
	}

void CGameController::RgcpHandleTerminated(TBool aClientInitiated)
	{
	if (!aClientInitiated)
		{
		iEnv->InfoMsg(R_GAME_TERMINATED_BY_OTHER);
		}
	}

void CGameController::RgcpHandleBound()
	{
	iEnv->InfoMsg(R_GAME_SESSION_BOUND);
	}

void CGameController::RgcpStartRequesting()
	{
	}

// app UI commands

void CGameController::CmdSendMessageL(const TDesC& aString)
	{
	TBuf8<256> utf8String;
	TInt err = CnvUtfConverter::ConvertFromUnicodeToUtf8(utf8String, aString);
	if (err > 0)
		{
		// Unconverted characters exist!
		iEnv->InfoMsg(R_GAME_CONVERT_FROM_UNICODE);
		}

	iRgcp->SendRequest(KGameOpcodeText, utf8String); // !! not unicode-safe
	iEngine->SetLastSentL(aString);
	iAppView->iLastSentLabel->SetTextL(aString);
	iAppView->DrawNow();
	}