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    41 

    42 #ifndef SCROLLBAR_H

    43 #define SCROLLBAR_H

    44 

    45 #include <QGraphicsWidget>

    46 #include <QPixmap>

    47 

    48 class ScrollBarPrivate;

    49 

    50 class ScrollBar : public QGraphicsWidget

    51 {

    52     Q_OBJECT

    53     Q_DECLARE_PRIVATE(ScrollBar)

    54 

    55 public:

    56 

    57     ScrollBar(Qt::Orientation orientation, QGraphicsWidget *parent=0);

    58     virtual ~ScrollBar();

    59 

    60 public:

    61 

    62     bool sliderDown() const;

    63     qreal sliderPosition() const;

    64     qreal sliderSize() const;

    65     void setSliderSize(const qreal s);

    66 

    67 signals:

    68 

    69     void sliderPressed();

    70 

    71     void sliderPositionChange(qreal position);

    72 

    73 public slots:

    74 

    75     void setSliderPosition(qreal pos);

    76     void themeChange();

    77 

    78 private:

    79 

    80     void paint(QPainter *painter, 

    81         const QStyleOptionGraphicsItem *option, 

    82         QWidget *widget);

    83 

    84     QSizeF sizeHint(Qt::SizeHint which, 

    85         const QSizeF &constraint = QSizeF()) const;

    86 

    87     void mousePressEvent(QGraphicsSceneMouseEvent *event);

    88     void mouseReleaseEvent(QGraphicsSceneMouseEvent *event);

    89     void mouseMoveEvent(QGraphicsSceneMouseEvent *event);

    90     void resizeEvent(QGraphicsSceneResizeEvent *event);

    91 

    92 private:

    93     Q_DISABLE_COPY(ScrollBar)

    94     ScrollBarPrivate *d_ptr;

    95 };

    96 

    97 #endif // SCROLLBAR_H