src/scaleitem.h

   1 #ifndef SCALEITEM_H
   2 #define SCALEITEM_H
   3
   4 #include <QGraphicsItem>
   5 #include "units.h"
   6
   7 class ScaleItem : public QGraphicsItem
   8 {
   9 public:
  10         ScaleItem(QGraphicsItem *parent = 0);
  11
  12         QRectF boundingRect() const {return _boundingRect;}
  13         void paint(QPainter *painter, const QStyleOptionGraphicsItem *option,
  14           QWidget *widget);
  15
  16         void setResolution(qreal res);
  17         void setUnits(enum Units units);
  18         void setDigitalZoom(int zoom);
  19
  20 private:
  21         void updateBoundingRect();
  22         void computeScale();
  23         QString units() const;
  24
  25         qreal _res;
  26         qreal _width;
  27         qreal _length;
  28         Units _units;
  29         bool _scale;
  30
  31         int _digitalZoom;
  32
  33         QRectF _boundingRect;
  34 };
  35
  36 #endif // SCALEITEM_H