engauge-digitizer-devel-doc/html/GridLineFactory_8h_source.html

/******************************************************************************************************

 * (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 GRID_LINE_FACTORY_H

#define GRID_LINE_FACTORY_H


#include "GridLine.h"

#include "Point.h"

#include <QList>


class Document;

class DocumentModelCoords;

class DocumentModelGridDisplay;

class GridLines;

class MainWindowModel;

class QGraphicsScene;

class QTransform;

class Transformation;


class GridLineFactory

{

public:

  GridLineFactory(QGraphicsScene &scene,

                  const DocumentModelCoords &modelCoords);


  GridLineFactory(QGraphicsScene &scene,

                  int pointRadius,

                  const QList<Point> &pointsToIsolate,

                  const DocumentModelCoords &modelCoords);


  GridLine *createGridLine (double xFrom,

                            double yFrom,

                            double xTo,

                            double yTo,

                            const Transformation &transformation);


  void createGridLinesForEvenlySpacedGrid (const DocumentModelGridDisplay &modelGridDisplay,

                                           const Document &document,

                                           const MainWindowModel &modelMainWindow,

                                           const Transformation &transformation,

                                           GridLines &gridLines);


private:

  GridLineFactory();


  void bindItemToScene(QGraphicsItem *item) const;

  void createTransformAlign (const Transformation &transformation,

                             double radiusLinearCartesian,

                             const QPointF &posOriginScreen,

                             QTransform &transformAlign,

                             double &ellipseXAxis,

                             double &ellipseYAxis) const;

  QGraphicsItem *ellipseItem (const Transformation &transformation,

                              double radiusLinearCartesian,

                              const QPointF &posStartScreen,

                              const QPointF &posEndScreen) const;

  void finishActiveGridLine (const QPointF &posStartScreen,

                             const QPointF &posEndScreen,

                             double yFrom,

                             double yTo,

                             const Transformation &transformation,

                             GridLine &gridLine) const;

  QGraphicsItem *lineItem (const QPointF &posStartScreen,

                           const QPointF &posEndScreen) const;

  double minScreenDistanceFromPoints (const QPointF &posScreen);


  QGraphicsScene &m_scene;

  const int m_pointRadius;

  const QList<Point> m_pointsToIsolate;

  const DocumentModelCoords m_modelCoords;

  bool m_isChecker;

};


#endif // GRID_LINE_FACTORY_H