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#include <QObject>

#include <qwt_dial.h>

#include <qwt_dial_needle.h>

class AttitudeIndicatorNeedle: public QwtDialNeedle

{

public:

    AttitudeIndicatorNeedle(const QColor &);

    virtual void draw(QPainter *, const QPoint &, int length,

        double direction, QPalette::ColorGroup) const;

};

class AttitudeIndicator: public QwtDial

{

    Q_OBJECT

public:

    AttitudeIndicator(QWidget *parent = NULL);

    double angle() const { return value(); }

    double gradient() const { return d_gradient; }

public slots:

    void setGradient(double);

    void setAngle(double angle) { setValue(angle); }

protected:

    virtual void keyPressEvent(QKeyEvent *);

    virtual void drawScale(QPainter *, const QPoint &center, int radius, double origin, double arcMin, double arcMax) const;

    virtual void drawScaleContents(QPainter *painter, const QPoint &center, int radius) const;

private:

    double d_gradient;

};