GridLineLimiter.h

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/******************************************************************************************************
 * (C) 2016 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 GRID_LINE_LIMITER_H
#define GRID_LINE_LIMITER_H
 
#include <QPointF>
 
class Document;
class DocumentModelCoords;
class DocumentModelGridDisplay;
class MainWindowModel;
class Transformation;
 
extern const int DEFAULT_MAXIMUM_GRID_LINES;
 
class GridLineLimiter
{
public:
  GridLineLimiter ();
 
  void limitForXTheta (const Document &document,
                       const Transformation &transformation,
                       const DocumentModelCoords &modelCoords,
                       const MainWindowModel &modelMainWindow,
                       const DocumentModelGridDisplay &modelGrid,
                       double &startX,
                       double &stepX,
                       double &stopX) const;
 
  void limitForYRadius (const Document &document,
                        const Transformation &transformation,
                        const DocumentModelCoords &modelCoords,
                        const MainWindowModel &modelMainWindow,
                        const DocumentModelGridDisplay &modelGrid,
                        double &startY,
                        double &stepY,
                        double &stopY) const;
 
private:
 
  void documentBounds (const Document &document,
                       const Transformation &transformation,
                       QPointF &boundingRectMin,
                       QPointF &boundingRectMax) const;
 
};
 
#endif // GRID_LINE_LIMITER_H