RGrid.h

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#ifndef RGRID_H
#define RGRID_H
 
#include "core_global.h"
 
#include "RVector.h"
#include "RBox.h"
#include "RRuler.h"
 
class RDocument;
class RGraphicsView;
 
class QCADCORE_EXPORT RGrid {
public:
    RGrid(RGraphicsView& view) : view(view), visible(-1) {}
    virtual ~RGrid() {}
 
    virtual void clearCache();
 
    virtual RVector snapToGrid(const RVector& positionUcs) = 0;
 
    virtual void update(bool force=false) = 0;
 
    virtual void paint() = 0;
 
    virtual void paintMetaGrid() = 0;
 
    virtual void paintCursor(const RVector& pos) = 0;
 
    virtual void paintRuler(RRuler& ruler, qreal devicePixelRatio = 1.0) = 0;
 
    virtual QString getInfoText() = 0;
 
    virtual bool isIsometric() const {
        return false;
    }
    virtual RS::IsoProjectionType getProjection() const {
        return RS::NoProjection;
    }
 
    int getViewportNumber() const;
 
    RDocument* getDocument() const;
 
    void setVisible(bool on);
    bool isVisible() const;
 
protected:
    RGraphicsView& view;
 
    // cached:
    mutable int visible;
};
 
Q_DECLARE_METATYPE(RGrid*)
 
#endif