GraphicsScene.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 GRAPHICS_SCENE_H
#define GRAPHICS_SCENE_H
 
#include "CmdMediator.h"
#include "GraphicsLinesForCurves.h"
#include <QGraphicsScene>
#include <QObject>
#include <QStringList>
 
class CmdMediator;
class Curve;
class CurvesGraphs;
class CurveStyles;
class GeometryWindow;
class GraphicsPoint;
class LineStyle;
class MainWindow;
class PointStyle;
class QGraphicsPathItem;
class QTextStream;
class ScaleBar;
class Transformation;
 
class GraphicsScene : public QGraphicsScene
{
  // We use Q_OBJECT so translations work
  Q_OBJECT;
  
public:
  GraphicsScene(MainWindow *mainWindow);
 
  virtual ~GraphicsScene();
 
  void addTemporaryPoint (const QString &identifier,
                          GraphicsPoint *point);
 
  void addTemporaryScaleBar (GraphicsPoint *point0,
                             GraphicsPoint *point1,
                             const QString &pointIdentifier0,
                             const QString &pointIdentifier1);
 
  GraphicsPoint *createPoint (const QString &identifier,
                              const PointStyle &pointStyle,
                              const QPointF &posScreen,
                              GeometryWindow *geometryWindow);
 
  void hideAllItemsExceptImage();
 
  QStringList positionHasChangedPointIdentifiers () const;
 
  void printStream (QString indentation,
                    QTextStream &str);
 
  void removePoint (const QString &identifier);
 
  void removeTemporaryPointIfExists ();
 
  void removeTemporaryScaleBarIfExists ();
 
  void resetOnLoad();
 
  void resetPositionHasChangedFlags();
 
  void showCurves (bool show,
                   bool showAll = false,
                   const QString &curveName = "");
 
  void updateAfterCommand (CmdMediator &cmdMediator,
                           double highlightOpacity,
                           GeometryWindow *geometryWindow,
                           const Transformation &transformation);
 
  void updateCurveStyles(const CurveStyles &modelCurveStyles);
 
  void updateGraphicsLinesToMatchGraphicsPoints (const CurveStyles &modelCurveStyles,
                                                 const Transformation &transformation);
 
private:
 
  QString dumpCursors () const;
 
  const QGraphicsPixmapItem *image () const;
 
  void updateCurves (CmdMediator &cmdMediator);
 
  void updatePathItemMultiValued (const QPainterPath &pathMultiValued,
                                  const LineStyle &lineMultiValued);
 
  void updatePointMembership (CmdMediator &cmdMediator,
                              GeometryWindow *geometryWindow,
                              const Transformation &transformation);
 
  GraphicsLinesForCurves m_graphicsLinesForCurves;
 
  QGraphicsPathItem *m_pathItemMultiValued;
};
 
#endif // GRAPHICS_SCENE_H