File indexing completed on 2024-12-22 04:17:18

 /***************************************************************************
                           datastscalar.h  -  a scalar from a data source
                              -------------------
     begin                : September, 2008
     copyright            : (C) 2008 by cbn
     email                : netterfield@astro.utoronto.ca
  ***************************************************************************/
 
 /***************************************************************************
  *                                                                         *
  *   This program is free software; you can redistribute it and/or modify  *
  *   it under the terms of the GNU General Public License as published by  *
  *   the Free Software Foundation; either version 2 of the License, or     *
  *   (at your option) any later version.                                   *
  *                                                                         *
  ***************************************************************************/
 
 #ifndef DATASCALAR_H
 #define DATASCALAR_H
 
 #include "kst_export.h"
 #include "dataprimitive.h"
 #include "scalar.h"
 
 class QXmlStreamWriter;
 
 namespace Kst {
 
 /**A class for handling data scalars for kst.
  *@author cbn
  */
 
 /** A scalar which gets its value from a data file. */
 class KSTCORE_EXPORT DataScalar : public Scalar, public DataPrimitive
 {
   Q_OBJECT
 
   protected:
     DataScalar(ObjectStore *store);
     friend class ObjectStore;
 
     virtual QString _automaticDescriptiveName() const;
 
     /** Update the scalar.*/
     virtual qint64 minInputSerial() const;
     virtual qint64 maxInputSerialOfLastChange() const;
 
 
   public:
     virtual ~DataScalar();
 
     struct ReadInfo {
       ReadInfo(double* d) : value(d) {}
       double* value;
     };
 
     struct DataInfo {
     };
 
     virtual void internalUpdate();
     virtual const QString& typeString() const;
     static const QString staticTypeString;
     static const QString staticTypeTag;
 
     /** change the properties of a DataScalar */
     void change(DataSourcePtr file, const QString &field);
     void changeFile(DataSourcePtr file);
 
     /** Save scalar information */
     virtual void save(QXmlStreamWriter &s);
 
     virtual QString descriptionTip() const;
 
     virtual QString propertyString() const;
     bool isValid() const;
 
     virtual void reset();
     void reload();
 
     virtual ScriptInterface* createScriptInterface();
 
   private:
     /** make a copy of the DataScalar */
     virtual PrimitivePtr makeDuplicate() const;
     virtual bool checkValidity(const DataSourcePtr& ds) const;
 };
 
 typedef SharedPtr<DataScalar> DataScalarPtr;
 typedef ObjectList<DataScalar> DataScalarList;
 
 }
 
 #endif
 // vim: ts=2 sw=2 et