source: trunk/synergy/lib/client/CServerProxy.h@ 2961

/*
 * synergy -- mouse and keyboard sharing utility
 * Copyright (C) 2002 Chris Schoeneman
 * 
 * This package is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * found in the file COPYING that should have accompanied this file.
 * 
 * This package is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 */

#ifndef CSERVERPROXY_H
#define CSERVERPROXY_H

#include "ClipboardTypes.h"
#include "KeyTypes.h"
#include "CEvent.h"

class CClient;
class CClientInfo;
class CEventQueueTimer;
class IClipboard;
class IStream;

//! Proxy for server
/*!
This class acts a proxy for the server, converting calls into messages
to the server and messages from the server to calls on the client.
*/
class CServerProxy {
public:
        /*!
        Process messages from the server on \p stream and forward to
        \p client.
        */
        CServerProxy(CClient* client, IStream* stream);
        ~CServerProxy();

        //! @name manipulators
        //@{

        void                            onInfoChanged();
        bool                            onGrabClipboard(ClipboardID);
        void                            onClipboardChanged(ClipboardID, const IClipboard*);

        //@}

protected:
        enum EResult { kOkay, kUnknown, kDisconnect };
        EResult                         parseHandshakeMessage(const UInt8* code);
        EResult                         parseMessage(const UInt8* code);

private:
        // if compressing mouse motion then send the last motion now
        void                            flushCompressedMouse();

        void                            sendInfo(const CClientInfo&);

        void                            resetKeepAliveAlarm();
        void                            setKeepAliveRate(double);

        // modifier key translation
        KeyID                           translateKey(KeyID) const;
        KeyModifierMask         translateModifierMask(KeyModifierMask) const;

        // event handlers
        void                            handleData(const CEvent&, void*);
        void                            handleKeepAliveAlarm(const CEvent&, void*);

        // message handlers
        void                            enter();
        void                            leave();
        void                            setClipboard();
        void                            grabClipboard();
        void                            keyDown();
        void                            keyRepeat();
        void                            keyUp();
        void                            mouseDown();
        void                            mouseUp();
        void                            mouseMove();
        void                            mouseRelativeMove();
        void                            mouseWheel();
        void                            screensaver();
        void                            resetOptions();
        void                            setOptions();
        void                            queryInfo();
        void                            infoAcknowledgment();

private:
        typedef EResult (CServerProxy::*MessageParser)(const UInt8*);

        CClient*                        m_client;
        IStream*                        m_stream;

        UInt32                          m_seqNum;

        bool                            m_compressMouse;
        bool                            m_compressMouseRelative;
        SInt32                          m_xMouse, m_yMouse;
        SInt32                          m_dxMouse, m_dyMouse;

        bool                            m_ignoreMouse;

        KeyModifierID           m_modifierTranslationTable[kKeyModifierIDLast];

        double                          m_keepAliveAlarm;
        CEventQueueTimer*       m_keepAliveAlarmTimer;

        MessageParser           m_parser;
};

#endif