src/graphitem.h

   1 #ifndef GRAPHITEM_H
   2 #define GRAPHITEM_H
   3
   4 #include <QGraphicsObject>
   5 #include <QPen>
   6 #include "graph.h"
   7
   8 class GraphItem : public QGraphicsObject
   9 {
  10         Q_OBJECT
  11
  12 public:
  13         GraphItem(const Graph &graph, QGraphicsItem *parent = 0);
  14
  15         QRectF boundingRect() const
  16           {return _path.boundingRect();}
  17         void paint(QPainter *painter, const QStyleOptionGraphicsItem *option,
  18           QWidget *widget);
  19
  20         const QRectF &bounds() const {return _bounds;}
  21         void setScale(qreal sx, qreal sy);
  22
  23         void setGraphType(GraphType type);
  24         int id() const {return _id;}
  25         void setId(int id) {_id = id;}
  26         void setColor(const QColor &color);
  27         void setWidth(int width);
  28
  29         qreal yAtX(qreal x);
  30         qreal distanceAtTime(qreal time);
  31
  32 signals:
  33         void sliderPositionChanged(qreal);
  34
  35 public slots:
  36         void emitSliderPositionChanged(qreal);
  37         void selected(bool selected);
  38
  39 private:
  40         void updatePath();
  41         void updateBounds();
  42
  43         int _id;
  44         QPen _pen;
  45         int _width;
  46
  47         Graph _graph;
  48         GraphType _type;
  49
  50         QPainterPath _path;
  51         QRectF _bounds;
  52         qreal _sx, _sy;
  53 };
  54
  55 #endif // GRAPHITEM_H