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#include <qwt_dial_needle.h>
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class AttitudeIndicatorNeedle: public QwtDialNeedle
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AttitudeIndicatorNeedle(const QColor &);
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virtual void draw(QPainter *, const QPoint &, int length,
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double direction, QPalette::ColorGroup) const;
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class AttitudeIndicator: public QwtDial
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AttitudeIndicator(QWidget *parent = NULL);
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double angle() const { return value(); }
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double gradient() const { return d_gradient; }
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void setGradient(double);
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void setAngle(double angle) { setValue(angle); }
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virtual void keyPressEvent(QKeyEvent *);
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virtual void drawScale(QPainter *, const QPoint ¢er,
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int radius, double origin, double arcMin, double arcMax) const;
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virtual void drawScaleContents(QPainter *painter,
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const QPoint ¢er, int radius) const;