CallbackBoundingRects.h

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/******************************************************************************************************
 * (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 CALLBACK_BOUNDING_RECTS_H
#define CALLBACK_BOUNDING_RECTS_H
 
#include "CallbackSearchReturn.h"
#include "DocumentAxesPointsRequired.h"
#include <QPointF>
#include <QRectF>
#include <QString>
#include "Transformation.h"
 
class Point;

class CallbackBoundingRects
{
public:
  CallbackBoundingRects(DocumentAxesPointsRequired documentAxesPointsRequired,
                        const Transformation &transformation);

  QPointF boundingRectGraphMin (bool &isEmpty) const;

  QPointF boundingRectGraphMax (bool &isEmpty) const;

  QRectF boundingRectScreen (bool &isEmpty) const;

  CallbackSearchReturn callback (const QString &curveName,
                                 const Point &point);
 
private:
  CallbackBoundingRects();
 
  void mergeCoordinateX (const QPointF &pos,
                         QPointF &boundingRectMin,
                         QPointF &boundingRectMax,
                         bool &isEmpty);
  void mergeCoordinateY (const QPointF &pos,
                         QPointF &boundingRectMin,
                         QPointF &boundingRectMax,
                         bool &isEmpty);
 
  DocumentAxesPointsRequired m_documentAxesPointsRequired;
  bool m_isEmptyGraphX; // Have x graph bounds been initialized
  bool m_isEmptyGraphY; // Have y graph bounds been initialized
  bool m_isEmptyScreenX; // Have x screen bounds been initialized
  bool m_isEmptyScreenY; // Have y screen bounds been initialized
  const Transformation m_transformation;
  QPointF m_boundingRectGraphMin; // Not a QRectF for reasons explained by boundingRectGraphMin
  QPointF m_boundingRectGraphMax; // Not a QRectF for reasons explained by boundingRectGraphMax
  QPointF m_boundingRectScreenMin; // Consistent with m_boundingRectGraphMin
  QPointF m_boundingRectScreenMax; // Consistent with m_boundingRectGraphMax
};
 
#endif // CALLBACK_BOUNDING_RECTS_H