vncthread.h

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/*
 # Copyright (c) 2009, 2010 - OpenSLX Project, Computer Center University of
 # Freiburg
 #
 # This program is free software distributed under the GPL version 2.
 # See http://openslx.org/COPYING
 #
 # If you have any feedback please consult http://openslx.org/feedback and
 # send your suggestions, praise, or complaints to feedback@openslx.org
 #
 # General information about OpenSLX can be found at http://openslx.org/
 */

#ifndef VNCCLIENTTHREAD_H_
#define VNCCLIENTTHREAD_H_

#include <QtCore>
#include <QImage>
#include <QThread>
#include <QSharedPointer>

class QPainter;

extern "C"
{
#include <rfb/rfbclient.h>
}

class VncThread : public QThread
{
   Q_OBJECT

private:
   rfbClient *_client{};

   QString _host;
   int _port;
   QString _passwd;
   int _quality;

   QSharedPointer<QImage> _img;

   volatile bool _connected{};
   volatile bool _run;
   bool _started;

   void calcScaling();
   void processImageUpdate(int x, int y, int w, int h);
   void emitStarted();

   // Callbacks for rfb lib. make them class members so the callbacks can access private members of the class.

   static void updateImage(rfbClient *client, int x, int y, int w, int h);
   static char* passwdHandler(rfbClient *client);
   static rfbBool frameBufferHandler(rfbClient *client);

public:
   VncThread(QString host, int port, QString passwd, int quality);
   ~VncThread() override;

   QString getDesktopName() const;
   bool isConnected() const { return _connected; }
   void stop() { _run = false; }
   const QSharedPointer<QImage>& getFrameBuffer() { return _img; }
   void run() override;

   int const static HIGH = 0;
   int const static MEDIUM = 1;
   int const static LOW = 2;

signals:
   void imageUpdated(const int x, const int y, const int w, const int h);
   void projectionStarted();
   void projectionStopped();

};

#endif /* VNCCLIENTTHREAD_H_ */