itom 2.0.0
D:/git-itom/sources/itom/common/addInGrabber.h
00001 /* ********************************************************************
00002     itom software
00003     URL: http://www.uni-stuttgart.de/ito
00004     Copyright (C) 2013, Institut für Technische Optik (ITO),
00005     Universität Stuttgart, Germany
00006 
00007     This file is part of itom and its software development toolkit (SDK).
00008 
00009     itom is free software; you can redistribute it and/or modify it
00010     under the terms of the GNU Library General Public Licence as published by
00011     the Free Software Foundation; either version 2 of the Licence, or (at
00012     your option) any later version.
00013    
00014     In addition, as a special exception, the Institut für Technische
00015     Optik (ITO) gives you certain additional rights.
00016     These rights are described in the ITO LGPL Exception version 1.0,
00017     which can be found in the file LGPL_EXCEPTION.txt in this package.
00018 
00019     itom is distributed in the hope that it will be useful, but
00020     WITHOUT ANY WARRANTY; without even the implied warranty of
00021     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library
00022     General Public Licence for more details.
00023 
00024     You should have received a copy of the GNU Library General Public License
00025     along with itom. If not, see <http://www.gnu.org/licenses/>.
00026 *********************************************************************** */
00027 
00028 #ifndef ADDINGRABBER_H
00029 #define ADDINGRABBER_H
00030 
00031 #include "addInInterface.h"
00032 
00033 #include "../DataObject/dataobj.h"
00034 #include "sharedStructuresQt.h"
00035 #include "sharedStructures.h"
00036 
00037 #if !defined(Q_MOC_RUN) || defined(ITOMCOMMONQT_MOC) //only moc this file in itomCommonQtLib but not in other libraries or executables linking against this itomCommonQtLib
00038 
00039 namespace ito
00040 {
00041     class ITOMCOMMONQT_EXPORT AddInGrabber : public ito::AddInDataIO
00042     {
00043         Q_OBJECT
00044 
00045     private:
00046 
00048 
00054         int m_started;
00055 
00056     protected:
00057         void timerEvent (QTimerEvent *event);  
00059 
00060 
00069         virtual ito::RetVal checkData(ito::DataObject *externalDataObject = NULL);
00070 
00072 
00079         virtual ito::RetVal retrieveData(ito::DataObject *externalDataObject = NULL) = 0; 
00080 
00081         ito::RetVal sendDataToListeners(int waitMS);  
00083         inline int grabberStartedCount() { return m_started; }  
00086         inline void incGrabberStarted() 
00087         { 
00088             m_started++; 
00089             if(m_started == 1)
00090             {
00091                 runStatusChanged(true); //now, the device is started -> check if any listener is connected and if so start the auto grabbing timer (if flag is true, too)
00092             }
00093         }  
00094 
00096         inline void decGrabberStarted() 
00097         { 
00098             m_started--; 
00099             if(m_started == 0)
00100             {
00101                 runStatusChanged(false); //now, the device is stopped -> stop any possibly started auto grabbing listener
00102             }
00103         } 
00104 
00106         inline void setGrabberStarted(int value) 
00107         { 
00108             m_started = value; 
00109             runStatusChanged( value > 0 );
00110         }  
00111 
00112         ito::DataObject m_data; 
00114     public:
00115         AddInGrabber();
00116         ~AddInGrabber();
00117 
00118     };
00119 } //end namespace ito
00120 
00121 #endif //#if !defined(Q_MOC_RUN) || defined(ITOMCOMMONQT_MOC)
00122 
00123 #endif
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