graphscene.h

#ifndef GRAPHSCENE_H
#define GRAPHSCENE_H

#include "graphlayouter.h"
#include "graphsorter.h"
#include "graphcolorizer.h"
#include <QGraphicsScene>

class GraphScene : public QGraphicsScene
{
    Q_OBJECT

public:
    explicit GraphScene(QWidget *parent);
    ~GraphScene();

    void CreateStackedGraph(DataSet& data);

    QVector<GraphLayouter*> GetLayouts() const  { return mLayouters; }
    QVector<GraphSorter*> GetSorters() const { return mSorters; }

    void SetLayout(GraphLayouter* const layouter);

    void SetSorter(GraphSorter* const sorter);

    void SetInterpolationMode(GraphLayouter::InterpolationMode const interpMode);

    void SetSortingAttribute(GraphSorter::SortingAttribute const sortAttribute);

    void SetColoringAttribute(GraphColorizer::ColoringAttribute const colorAttribute);

    void SetLabeling(bool enabled);

    void SetColors(QColor const beginColor, QColor const endColor);

    void Set2DColoring(bool enable);

    QImage GetBitmap(int width, int height, bool keepAspect);
signals:
    void redrawRequired();
protected:
    void mousePressEvent(QGraphicsSceneMouseEvent* ev) override;
private:
    void calculateScale(DataSet& set, double& scaleX, double&scaleY);
    QString getPopupString(const DataItem& item);

    void placeLabel(const QString& label, const QPainterPath& path, const QPointF& optimalPoint, const QBrush& brush);

    bool mDoLabeling;

    DataSet mCurrentData;

    QVector<GraphLayouter*> mLayouters;
    QVector<GraphSorter*> mSorters;

    GraphLayouter* mCurrentLayouter;
    GraphSorter* mCurrentSorter;
    GraphColorizer* mCurrentColorizer;
    GraphLayouter::InterpolationMode mCurrentInterpMode;
    GraphSorter::SortingAttribute mCurrentSortAttribute;
    GraphColorizer::ColoringAttribute mCurrentColoringAttribute;

    QList<QGraphicsItem*> mOldSelection;
private slots:
    void onSelectionChanged();
};

#endif // GRAPHSCENE_H