TransformationStateAbstractBase.h

/******************************************************************************************************
 * (C) 2014 markummitchell@github.com. This file is part of Engauge Digitizer, which is released      *
 * under GNU General Public License version 2 (GPLv2) or (at your option) any later version. See file *
 * LICENSE or go to gnu.org/licenses for details. Distribution requires prior written permission.     *
 ******************************************************************************************************/
 
#ifndef TRANSFORMATION_STATE_ABSTRACT_BASE_H
#define TRANSFORMATION_STATE_ABSTRACT_BASE_H
 
class CmdMediator;
class DocumentModelAxesChecker;
class QColor;
class QString;
class Transformation;
class TransformationStateContext;
 
enum TransformationState {
  TRANSFORMATION_STATE_DEFINED,
  TRANSFORMATION_STATE_UNDEFINED,
  NUM_TRANSFORMATION_STATES
};
 
class TransformationStateAbstractBase
{
public:
  TransformationStateAbstractBase(TransformationStateContext &context);
  virtual ~TransformationStateAbstractBase();
 
  virtual void begin(CmdMediator &cmdMediator,
                     const Transformation &transformation,
                     const QString &selectedGraphCurve) = 0;
 
  virtual void end(CmdMediator &cmdMediator,
                   const Transformation &transformation) = 0;
 
  virtual void updateAxesChecker (CmdMediator &cmdMediator,
                                  const Transformation &transformation) = 0;
 
protected:
  TransformationStateContext &context ();
 
private:
  TransformationStateAbstractBase();
 
  TransformationStateContext &m_context;
};
 
#endif // TRANSFORMATION_STATE_ABSTRACT_BASE_H